Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1 | /* |
| 2 | * SSLv3/TLSv1 shared functions |
| 3 | * |
Manuel Pégourié-Gonnard | 6fb8187 | 2015-07-27 11:11:48 +0200 | [diff] [blame] | 4 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
Manuel Pégourié-Gonnard | 37ff140 | 2015-09-04 14:21:07 +0200 | [diff] [blame] | 5 | * SPDX-License-Identifier: Apache-2.0 |
| 6 | * |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 8 | * not use this file except in compliance with the License. |
| 9 | * You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, software |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 15 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | * See the License for the specific language governing permissions and |
| 17 | * limitations under the License. |
Paul Bakker | b96f154 | 2010-07-18 20:36:00 +0000 | [diff] [blame] | 18 | * |
Manuel Pégourié-Gonnard | fe44643 | 2015-03-06 13:17:10 +0000 | [diff] [blame] | 19 | * This file is part of mbed TLS (https://tls.mbed.org) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 20 | */ |
| 21 | /* |
| 22 | * The SSL 3.0 specification was drafted by Netscape in 1996, |
| 23 | * and became an IETF standard in 1999. |
| 24 | * |
| 25 | * http://wp.netscape.com/eng/ssl3/ |
| 26 | * http://www.ietf.org/rfc/rfc2246.txt |
| 27 | * http://www.ietf.org/rfc/rfc4346.txt |
| 28 | */ |
| 29 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 30 | #if !defined(MBEDTLS_CONFIG_FILE) |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 31 | #include "mbedtls/config.h" |
Manuel Pégourié-Gonnard | cef4ad2 | 2014-04-29 12:39:06 +0200 | [diff] [blame] | 32 | #else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 33 | #include MBEDTLS_CONFIG_FILE |
Manuel Pégourié-Gonnard | cef4ad2 | 2014-04-29 12:39:06 +0200 | [diff] [blame] | 34 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 35 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 36 | #if defined(MBEDTLS_SSL_TLS_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 37 | |
SimonB | d5800b7 | 2016-04-26 07:43:27 +0100 | [diff] [blame] | 38 | #if defined(MBEDTLS_PLATFORM_C) |
| 39 | #include "mbedtls/platform.h" |
| 40 | #else |
| 41 | #include <stdlib.h> |
| 42 | #define mbedtls_calloc calloc |
| 43 | #define mbedtls_free free |
SimonB | d5800b7 | 2016-04-26 07:43:27 +0100 | [diff] [blame] | 44 | #endif |
| 45 | |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 46 | #include "mbedtls/debug.h" |
| 47 | #include "mbedtls/ssl.h" |
Manuel Pégourié-Gonnard | 5e94dde | 2015-05-26 11:57:05 +0200 | [diff] [blame] | 48 | #include "mbedtls/ssl_internal.h" |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 49 | #include "mbedtls/platform_util.h" |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 50 | #include "mbedtls/version.h" |
Jarno Lamsa | af60cd7 | 2019-12-19 16:45:23 +0200 | [diff] [blame] | 51 | #include "mbedtls/platform.h" |
| 52 | |
Rich Evans | 00ab470 | 2015-02-06 13:43:58 +0000 | [diff] [blame] | 53 | #include <string.h> |
| 54 | |
Janos Follath | 23bdca0 | 2016-10-07 14:47:14 +0100 | [diff] [blame] | 55 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 56 | #include "mbedtls/oid.h" |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 57 | #endif |
| 58 | |
Andrzej Kurek | f7df0d3 | 2020-09-19 12:00:57 +0200 | [diff] [blame] | 59 | #define PROPER_HS_FRAGMENT 0x75 |
Andrzej Kurek | 8f52a8a | 2020-06-08 11:02:22 -0400 | [diff] [blame] | 60 | |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 61 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 62 | static int mbedtls_ssl_switch_key( mbedtls_ssl_transform *transform, |
| 63 | const mbedtls_operation_t operation ) |
| 64 | { |
| 65 | unsigned char * key; |
Andrzej Kurek | 69bafce | 2020-09-19 12:45:20 +0200 | [diff] [blame] | 66 | int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 67 | int flow_ctrl = 0; |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 68 | #if defined(MBEDTLS_VALIDATE_SSL_KEYS_INTEGRITY) |
| 69 | uint32_t hash; |
| 70 | #endif |
| 71 | if( operation == MBEDTLS_ENCRYPT ) |
| 72 | { |
Andrzej Kurek | 69bafce | 2020-09-19 12:45:20 +0200 | [diff] [blame] | 73 | flow_ctrl++; |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 74 | key = transform->key_enc; |
| 75 | #if defined(MBEDTLS_VALIDATE_SSL_KEYS_INTEGRITY) |
| 76 | hash = transform->key_enc_hash; |
| 77 | #endif |
| 78 | } |
| 79 | else if ( operation == MBEDTLS_DECRYPT ) |
| 80 | { |
Andrzej Kurek | 69bafce | 2020-09-19 12:45:20 +0200 | [diff] [blame] | 81 | flow_ctrl++; |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 82 | key = transform->key_dec; |
| 83 | #if defined(MBEDTLS_VALIDATE_SSL_KEYS_INTEGRITY) |
| 84 | hash = transform->key_dec_hash; |
| 85 | #endif |
| 86 | } |
| 87 | else |
| 88 | { |
| 89 | return ( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 90 | } |
| 91 | #if defined(MBEDTLS_VALIDATE_SSL_KEYS_INTEGRITY) |
| 92 | /* Check hash */ |
| 93 | if( hash != mbedtls_hash( key, transform->key_bitlen >> 3 ) ) |
| 94 | { |
| 95 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 96 | } |
Andrzej Kurek | 69bafce | 2020-09-19 12:45:20 +0200 | [diff] [blame] | 97 | else |
| 98 | { |
| 99 | flow_ctrl++; |
| 100 | } |
| 101 | #else |
| 102 | flow_ctrl++; |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 103 | #endif |
| 104 | if( operation != transform->cipher_ctx.operation ) |
| 105 | { |
| 106 | if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx, |
| 107 | key, |
| 108 | transform->key_bitlen, |
| 109 | operation ) ) != 0 ) |
| 110 | { |
| 111 | return( ret ); |
| 112 | } |
| 113 | } |
Andrzej Kurek | 69bafce | 2020-09-19 12:45:20 +0200 | [diff] [blame] | 114 | if( flow_ctrl == 2 ) |
| 115 | { |
| 116 | return( 0 ); |
| 117 | } |
| 118 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 119 | } |
| 120 | #endif |
| 121 | |
Hanno Becker | ef982d5 | 2019-07-23 15:56:18 +0100 | [diff] [blame] | 122 | #if defined(MBEDTLS_USE_TINYCRYPT) |
| 123 | static int uecc_rng_wrapper( uint8_t *dest, unsigned int size ) |
| 124 | { |
Hanno Becker | d089fad | 2019-07-24 09:05:05 +0100 | [diff] [blame] | 125 | int ret; |
| 126 | ret = mbedtls_ssl_conf_rng_func( NULL, dest, size ); |
| 127 | if( ret == 0 ) |
| 128 | return( (int) size ); |
| 129 | |
| 130 | return( 0 ); |
Hanno Becker | ef982d5 | 2019-07-23 15:56:18 +0100 | [diff] [blame] | 131 | } |
Hanno Becker | 75f12d1 | 2019-07-23 16:16:15 +0100 | [diff] [blame] | 132 | |
| 133 | int mbedtls_ssl_ecdh_read_peerkey( mbedtls_ssl_context *ssl, |
| 134 | unsigned char **p, unsigned char *end ) |
| 135 | { |
| 136 | size_t const secp256r1_uncompressed_point_length = |
| 137 | 1 /* length */ + 1 /* length */ + 2 * NUM_ECC_BYTES /* data */; |
| 138 | |
| 139 | if( (size_t)( end - *p ) < secp256r1_uncompressed_point_length ) |
| 140 | { |
| 141 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Bad ECDH peer pubkey (too short)" ) ); |
Hanno Becker | c64d5af | 2019-08-23 13:14:36 +0100 | [diff] [blame] | 142 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Hanno Becker | 75f12d1 | 2019-07-23 16:16:15 +0100 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | if( (*p)[0] != 2 * NUM_ECC_BYTES + 1 || |
| 146 | (*p)[1] != 0x04 ) |
| 147 | { |
| 148 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Unexpected ECDH peer pubkey header - expected { %#02x, %#02x }, got { %#02x, %#02x }", |
| 149 | 2 * NUM_ECC_BYTES + 1, |
| 150 | 0x04, |
| 151 | (unsigned) (*p)[0], |
| 152 | (unsigned) (*p)[1] ) ); |
Hanno Becker | c64d5af | 2019-08-23 13:14:36 +0100 | [diff] [blame] | 153 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Hanno Becker | 75f12d1 | 2019-07-23 16:16:15 +0100 | [diff] [blame] | 154 | } |
| 155 | |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 156 | if( mbedtls_platform_memcpy( ssl->handshake->ecdh_peerkey, *p + 2, 2 * NUM_ECC_BYTES ) != |
| 157 | ssl->handshake->ecdh_peerkey ) |
| 158 | { |
| 159 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 160 | } |
Hanno Becker | 75f12d1 | 2019-07-23 16:16:15 +0100 | [diff] [blame] | 161 | |
| 162 | *p += secp256r1_uncompressed_point_length; |
| 163 | return( 0 ); |
| 164 | } |
Hanno Becker | ef982d5 | 2019-07-23 15:56:18 +0100 | [diff] [blame] | 165 | #endif /* MBEDTLS_USE_TINYCRYPT */ |
| 166 | |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 167 | static void ssl_reset_in_out_pointers( mbedtls_ssl_context *ssl ); |
Hanno Becker | cd9dcda | 2018-08-28 17:18:56 +0100 | [diff] [blame] | 168 | static uint32_t ssl_get_hs_total_len( mbedtls_ssl_context const *ssl ); |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 169 | |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 170 | /* Length of the "epoch" field in the record header */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 171 | static inline size_t ssl_ep_len( const mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 172 | { |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 173 | #if !defined(MBEDTLS_SSL_TRANSPORT__BOTH) |
Manuel Pégourié-Gonnard | 34c1011 | 2014-03-25 13:36:22 +0100 | [diff] [blame] | 174 | ((void) ssl); |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 175 | #endif |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 176 | |
| 177 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 178 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
| 179 | return( 2 ); |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 180 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 181 | #endif |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 182 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 183 | return( 0 ); |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 184 | #endif |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 185 | } |
| 186 | |
Hanno Becker | b82350b | 2019-07-26 07:24:05 +0100 | [diff] [blame] | 187 | static void ssl_send_pending_fatal_alert( mbedtls_ssl_context *ssl ) |
| 188 | { |
| 189 | if( ssl->pending_fatal_alert_msg == MBEDTLS_SSL_ALERT_MSG_NONE ) |
| 190 | return; |
| 191 | |
| 192 | mbedtls_ssl_send_alert_message( ssl, |
| 193 | MBEDTLS_SSL_ALERT_LEVEL_FATAL, |
| 194 | ssl->pending_fatal_alert_msg ); |
| 195 | ssl->pending_fatal_alert_msg = MBEDTLS_SSL_ALERT_MSG_NONE; |
| 196 | } |
| 197 | |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 198 | /* |
| 199 | * Start a timer. |
| 200 | * Passing millisecs = 0 cancels a running timer. |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 201 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 202 | static void ssl_set_timer( mbedtls_ssl_context *ssl, uint32_t millisecs ) |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 203 | { |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 204 | if( mbedtls_ssl_get_set_timer( ssl ) == NULL ) |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 205 | return; |
| 206 | |
| 207 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "set_timer to %d ms", (int) millisecs ) ); |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 208 | mbedtls_ssl_get_set_timer( ssl )( ssl->p_timer, |
| 209 | millisecs / 4, |
| 210 | millisecs ); |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /* |
| 214 | * Return -1 is timer is expired, 0 if it isn't. |
| 215 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 216 | static int ssl_check_timer( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 217 | { |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 218 | if( mbedtls_ssl_get_get_timer( ssl ) == NULL ) |
Manuel Pégourié-Gonnard | 545102e | 2015-05-13 17:28:43 +0200 | [diff] [blame] | 219 | return( 0 ); |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 220 | |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 221 | if( mbedtls_ssl_get_get_timer( ssl )( ssl->p_timer ) == 2 ) |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 222 | { |
| 223 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "timer expired" ) ); |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 224 | return( -1 ); |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 225 | } |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 226 | |
| 227 | return( 0 ); |
| 228 | } |
Manuel Pégourié-Gonnard | db2858c | 2014-09-29 14:04:42 +0200 | [diff] [blame] | 229 | |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 230 | static void ssl_update_out_pointers( mbedtls_ssl_context *ssl, |
| 231 | mbedtls_ssl_transform *transform ); |
Hanno Becker | f5970a0 | 2019-05-08 09:38:41 +0100 | [diff] [blame] | 232 | static void ssl_update_in_pointers( mbedtls_ssl_context *ssl ); |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 233 | |
Hanno Becker | 02f2609 | 2019-07-03 16:13:00 +0100 | [diff] [blame] | 234 | #if defined(MBEDTLS_SSL_RECORD_CHECKING) |
Hanno Becker | 03e2db6 | 2019-07-12 14:40:00 +0100 | [diff] [blame] | 235 | static int ssl_parse_record_header( mbedtls_ssl_context const *ssl, |
| 236 | unsigned char *buf, |
| 237 | size_t len, |
| 238 | mbedtls_record *rec ); |
| 239 | |
Hanno Becker | 02f2609 | 2019-07-03 16:13:00 +0100 | [diff] [blame] | 240 | int mbedtls_ssl_check_record( mbedtls_ssl_context const *ssl, |
| 241 | unsigned char *buf, |
| 242 | size_t buflen ) |
| 243 | { |
Andrzej Kurek | fd56f40 | 2020-05-25 11:52:05 -0400 | [diff] [blame] | 244 | int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Hanno Becker | 03e2db6 | 2019-07-12 14:40:00 +0100 | [diff] [blame] | 245 | mbedtls_record rec; |
| 246 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "=> mbedtls_ssl_check_record" ) ); |
| 247 | MBEDTLS_SSL_DEBUG_BUF( 3, "record buffer", buf, buflen ); |
| 248 | |
| 249 | /* We don't support record checking in TLS because |
| 250 | * (a) there doesn't seem to be a usecase for it, and |
| 251 | * (b) In SSLv3 and TLS 1.0, CBC record decryption has state |
| 252 | * and we'd need to backup the transform here. |
| 253 | */ |
| 254 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 255 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) ) |
| 256 | { |
| 257 | ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE; |
| 258 | goto exit; |
| 259 | } |
| 260 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 261 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
| 262 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 263 | { |
| 264 | ret = ssl_parse_record_header( ssl, buf, buflen, &rec ); |
| 265 | if( ret != 0 ) |
| 266 | { |
| 267 | MBEDTLS_SSL_DEBUG_RET( 3, "ssl_parse_record_header", ret ); |
| 268 | goto exit; |
| 269 | } |
| 270 | |
| 271 | if( ssl->transform_in != NULL ) |
| 272 | { |
| 273 | ret = mbedtls_ssl_decrypt_buf( ssl, ssl->transform_in, &rec ); |
| 274 | if( ret != 0 ) |
| 275 | { |
| 276 | MBEDTLS_SSL_DEBUG_RET( 3, "mbedtls_ssl_decrypt_buf", ret ); |
| 277 | goto exit; |
| 278 | } |
| 279 | } |
| 280 | } |
| 281 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 282 | |
| 283 | exit: |
| 284 | /* On success, we have decrypted the buffer in-place, so make |
| 285 | * sure we don't leak any plaintext data. */ |
| 286 | mbedtls_platform_zeroize( buf, buflen ); |
| 287 | |
| 288 | /* For the purpose of this API, treat messages with unexpected CID |
| 289 | * as well as such from future epochs as unexpected. */ |
| 290 | if( ret == MBEDTLS_ERR_SSL_UNEXPECTED_CID || |
| 291 | ret == MBEDTLS_ERR_SSL_EARLY_MESSAGE ) |
| 292 | { |
| 293 | ret = MBEDTLS_ERR_SSL_UNEXPECTED_RECORD; |
| 294 | } |
| 295 | |
| 296 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "<= mbedtls_ssl_check_record" ) ); |
| 297 | return( ret ); |
Hanno Becker | 02f2609 | 2019-07-03 16:13:00 +0100 | [diff] [blame] | 298 | } |
| 299 | #endif /* MBEDTLS_SSL_RECORD_CHECKING */ |
| 300 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 301 | #define SSL_DONT_FORCE_FLUSH 0 |
| 302 | #define SSL_FORCE_FLUSH 1 |
| 303 | |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 304 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 305 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 306 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | b9e7dea | 2019-04-09 15:22:03 +0100 | [diff] [blame] | 307 | /* Top-level Connection ID API */ |
| 308 | |
Hanno Becker | e0200da | 2019-06-13 09:23:43 +0100 | [diff] [blame] | 309 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) && \ |
| 310 | !defined(MBEDTLS_SSL_CONF_CID_LEN) && \ |
| 311 | !defined(MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID) |
Hanno Becker | e8eff9a | 2019-05-14 11:30:10 +0100 | [diff] [blame] | 312 | int mbedtls_ssl_conf_cid( mbedtls_ssl_config *conf, |
| 313 | size_t len, |
| 314 | int ignore_other_cid ) |
Hanno Becker | eec2be9 | 2019-05-03 13:06:44 +0100 | [diff] [blame] | 315 | { |
| 316 | if( len > MBEDTLS_SSL_CID_IN_LEN_MAX ) |
| 317 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 318 | |
Hanno Becker | 791ec6b | 2019-05-14 11:45:26 +0100 | [diff] [blame] | 319 | if( ignore_other_cid != MBEDTLS_SSL_UNEXPECTED_CID_FAIL && |
| 320 | ignore_other_cid != MBEDTLS_SSL_UNEXPECTED_CID_IGNORE ) |
| 321 | { |
| 322 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 323 | } |
| 324 | |
| 325 | conf->ignore_unexpected_cid = ignore_other_cid; |
Hanno Becker | eec2be9 | 2019-05-03 13:06:44 +0100 | [diff] [blame] | 326 | conf->cid_len = len; |
| 327 | return( 0 ); |
| 328 | } |
Hanno Becker | e0200da | 2019-06-13 09:23:43 +0100 | [diff] [blame] | 329 | #else /* MBEDTLS_SSL_DTLS_CONNECTION_ID && |
| 330 | !MBEDTLS_SSL_CONF_CID_LEN && |
| 331 | !MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID */ |
| 332 | |
| 333 | #if MBEDTLS_SSL_CONF_CID_LEN > MBEDTLS_SSL_CID_IN_LEN_MAX |
| 334 | #error "Invalid hardcoded value for MBEDTLS_SSL_CONF_CID_LEN" |
| 335 | #endif |
| 336 | #if MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID != MBEDTLS_SSL_UNEXPECTED_CID_IGNORE && \ |
| 337 | MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID != MBEDTLS_SSL_UNEXPECTED_CID_FAIL |
| 338 | #error "Invalid hardcoded value for MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID" |
| 339 | #endif |
| 340 | |
| 341 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID && |
| 342 | !MBEDTLS_SSL_CONF_CID_LEN && |
| 343 | !MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID */ |
Hanno Becker | eec2be9 | 2019-05-03 13:06:44 +0100 | [diff] [blame] | 344 | |
Hanno Becker | b9e7dea | 2019-04-09 15:22:03 +0100 | [diff] [blame] | 345 | int mbedtls_ssl_set_cid( mbedtls_ssl_context *ssl, |
| 346 | int enable, |
| 347 | unsigned char const *own_cid, |
| 348 | size_t own_cid_len ) |
| 349 | { |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 350 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) ) |
Hanno Becker | 78c4302 | 2019-05-03 14:38:32 +0100 | [diff] [blame] | 351 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 352 | |
Hanno Becker | 0748986 | 2019-04-25 16:01:49 +0100 | [diff] [blame] | 353 | ssl->negotiate_cid = enable; |
| 354 | if( enable == MBEDTLS_SSL_CID_DISABLED ) |
| 355 | { |
| 356 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Disable use of CID extension." ) ); |
| 357 | return( 0 ); |
| 358 | } |
| 359 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Enable use of CID extension." ) ); |
Hanno Becker | eec2be9 | 2019-05-03 13:06:44 +0100 | [diff] [blame] | 360 | MBEDTLS_SSL_DEBUG_BUF( 3, "Own CID", own_cid, own_cid_len ); |
Hanno Becker | 0748986 | 2019-04-25 16:01:49 +0100 | [diff] [blame] | 361 | |
Hanno Becker | e0200da | 2019-06-13 09:23:43 +0100 | [diff] [blame] | 362 | if( own_cid_len != mbedtls_ssl_conf_get_cid_len( ssl->conf ) ) |
Hanno Becker | 0748986 | 2019-04-25 16:01:49 +0100 | [diff] [blame] | 363 | { |
Hanno Becker | eec2be9 | 2019-05-03 13:06:44 +0100 | [diff] [blame] | 364 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "CID length %u does not match CID length %u in config", |
| 365 | (unsigned) own_cid_len, |
Hanno Becker | e0200da | 2019-06-13 09:23:43 +0100 | [diff] [blame] | 366 | (unsigned) mbedtls_ssl_conf_get_cid_len( ssl->conf ) ) ); |
Hanno Becker | 0748986 | 2019-04-25 16:01:49 +0100 | [diff] [blame] | 367 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 368 | } |
| 369 | |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 370 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 371 | memcpy( ssl->own_cid, own_cid, own_cid_len ); |
Hanno Becker | b4a5606 | 2019-04-30 14:07:31 +0100 | [diff] [blame] | 372 | /* Truncation is not an issue here because |
| 373 | * MBEDTLS_SSL_CID_IN_LEN_MAX at most 255. */ |
| 374 | ssl->own_cid_len = (uint8_t) own_cid_len; |
Hanno Becker | 0748986 | 2019-04-25 16:01:49 +0100 | [diff] [blame] | 375 | |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 376 | return( 0 ); |
Hanno Becker | b9e7dea | 2019-04-09 15:22:03 +0100 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | int mbedtls_ssl_get_peer_cid( mbedtls_ssl_context *ssl, |
| 380 | int *enabled, |
| 381 | unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ], |
| 382 | size_t *peer_cid_len ) |
| 383 | { |
Hanno Becker | b9e7dea | 2019-04-09 15:22:03 +0100 | [diff] [blame] | 384 | *enabled = MBEDTLS_SSL_CID_DISABLED; |
Hanno Becker | 2de89fa | 2019-04-26 17:08:02 +0100 | [diff] [blame] | 385 | |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 386 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) || |
Hanno Becker | 78c4302 | 2019-05-03 14:38:32 +0100 | [diff] [blame] | 387 | ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
| 388 | { |
Hanno Becker | 2de89fa | 2019-04-26 17:08:02 +0100 | [diff] [blame] | 389 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Hanno Becker | 78c4302 | 2019-05-03 14:38:32 +0100 | [diff] [blame] | 390 | } |
Hanno Becker | 2de89fa | 2019-04-26 17:08:02 +0100 | [diff] [blame] | 391 | |
Hanno Becker | cb063f5 | 2019-05-03 12:54:52 +0100 | [diff] [blame] | 392 | /* We report MBEDTLS_SSL_CID_DISABLED in case the CID extensions |
| 393 | * were used, but client and server requested the empty CID. |
| 394 | * This is indistinguishable from not using the CID extension |
| 395 | * in the first place. */ |
Hanno Becker | 2de89fa | 2019-04-26 17:08:02 +0100 | [diff] [blame] | 396 | if( ssl->transform_in->in_cid_len == 0 && |
| 397 | ssl->transform_in->out_cid_len == 0 ) |
| 398 | { |
| 399 | return( 0 ); |
| 400 | } |
| 401 | |
Hanno Becker | 633d604 | 2019-05-22 16:50:35 +0100 | [diff] [blame] | 402 | if( peer_cid_len != NULL ) |
| 403 | { |
| 404 | *peer_cid_len = ssl->transform_in->out_cid_len; |
| 405 | if( peer_cid != NULL ) |
| 406 | { |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 407 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 408 | memcpy( peer_cid, ssl->transform_in->out_cid, |
Hanno Becker | 633d604 | 2019-05-22 16:50:35 +0100 | [diff] [blame] | 409 | ssl->transform_in->out_cid_len ); |
| 410 | } |
| 411 | } |
Hanno Becker | 2de89fa | 2019-04-26 17:08:02 +0100 | [diff] [blame] | 412 | |
| 413 | *enabled = MBEDTLS_SSL_CID_ENABLED; |
| 414 | |
Hanno Becker | b9e7dea | 2019-04-09 15:22:03 +0100 | [diff] [blame] | 415 | return( 0 ); |
| 416 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 417 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | b9e7dea | 2019-04-09 15:22:03 +0100 | [diff] [blame] | 418 | |
Hanno Becker | d584777 | 2018-08-28 10:09:23 +0100 | [diff] [blame] | 419 | /* Forward declarations for functions related to message buffering. */ |
| 420 | static void ssl_buffering_free( mbedtls_ssl_context *ssl ); |
| 421 | static void ssl_buffering_free_slot( mbedtls_ssl_context *ssl, |
| 422 | uint8_t slot ); |
| 423 | static void ssl_free_buffered_record( mbedtls_ssl_context *ssl ); |
| 424 | static int ssl_load_buffered_message( mbedtls_ssl_context *ssl ); |
| 425 | static int ssl_load_buffered_record( mbedtls_ssl_context *ssl ); |
| 426 | static int ssl_buffer_message( mbedtls_ssl_context *ssl ); |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 427 | static int ssl_buffer_future_record( mbedtls_ssl_context *ssl, |
| 428 | mbedtls_record const *rec ); |
Hanno Becker | ef7afdf | 2018-08-28 17:16:31 +0100 | [diff] [blame] | 429 | static int ssl_next_record_is_in_datagram( mbedtls_ssl_context *ssl ); |
Hanno Becker | d584777 | 2018-08-28 10:09:23 +0100 | [diff] [blame] | 430 | |
Hanno Becker | a67dee2 | 2018-08-22 10:05:20 +0100 | [diff] [blame] | 431 | static size_t ssl_get_current_mtu( const mbedtls_ssl_context *ssl ); |
Hanno Becker | 11682cc | 2018-08-22 14:41:02 +0100 | [diff] [blame] | 432 | static size_t ssl_get_maximum_datagram_size( mbedtls_ssl_context const *ssl ) |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 433 | { |
Hanno Becker | 11682cc | 2018-08-22 14:41:02 +0100 | [diff] [blame] | 434 | size_t mtu = ssl_get_current_mtu( ssl ); |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 435 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 436 | size_t out_buf_len = ssl->out_buf_len; |
| 437 | #else |
| 438 | size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN; |
| 439 | #endif |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 440 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 441 | if( mtu != 0 && mtu < out_buf_len ) |
Hanno Becker | 11682cc | 2018-08-22 14:41:02 +0100 | [diff] [blame] | 442 | return( mtu ); |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 443 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 444 | return( out_buf_len ); |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 445 | } |
| 446 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 447 | static int ssl_get_remaining_space_in_datagram( mbedtls_ssl_context const *ssl ) |
| 448 | { |
Hanno Becker | 11682cc | 2018-08-22 14:41:02 +0100 | [diff] [blame] | 449 | size_t const bytes_written = ssl->out_left; |
| 450 | size_t const mtu = ssl_get_maximum_datagram_size( ssl ); |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 451 | |
| 452 | /* Double-check that the write-index hasn't gone |
| 453 | * past what we can transmit in a single datagram. */ |
Hanno Becker | 11682cc | 2018-08-22 14:41:02 +0100 | [diff] [blame] | 454 | if( bytes_written > mtu ) |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 455 | { |
| 456 | /* Should never happen... */ |
| 457 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 458 | } |
| 459 | |
| 460 | return( (int) ( mtu - bytes_written ) ); |
| 461 | } |
| 462 | |
| 463 | static int ssl_get_remaining_payload_in_datagram( mbedtls_ssl_context const *ssl ) |
| 464 | { |
| 465 | int ret; |
| 466 | size_t remaining, expansion; |
Andrzej Kurek | 748face | 2018-10-11 07:20:19 -0400 | [diff] [blame] | 467 | size_t max_len = MBEDTLS_SSL_OUT_CONTENT_LEN; |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 468 | |
| 469 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 470 | const size_t mfl = mbedtls_ssl_get_output_max_frag_len( ssl ); |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 471 | |
| 472 | if( max_len > mfl ) |
| 473 | max_len = mfl; |
Hanno Becker | f4b010e | 2018-08-24 10:47:29 +0100 | [diff] [blame] | 474 | |
| 475 | /* By the standard (RFC 6066 Sect. 4), the MFL extension |
| 476 | * only limits the maximum record payload size, so in theory |
| 477 | * we would be allowed to pack multiple records of payload size |
| 478 | * MFL into a single datagram. However, this would mean that there's |
| 479 | * no way to explicitly communicate MTU restrictions to the peer. |
| 480 | * |
| 481 | * The following reduction of max_len makes sure that we never |
| 482 | * write datagrams larger than MFL + Record Expansion Overhead. |
| 483 | */ |
| 484 | if( max_len <= ssl->out_left ) |
| 485 | return( 0 ); |
| 486 | |
| 487 | max_len -= ssl->out_left; |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 488 | #endif |
| 489 | |
| 490 | ret = ssl_get_remaining_space_in_datagram( ssl ); |
| 491 | if( ret < 0 ) |
| 492 | return( ret ); |
| 493 | remaining = (size_t) ret; |
| 494 | |
| 495 | ret = mbedtls_ssl_get_record_expansion( ssl ); |
| 496 | if( ret < 0 ) |
| 497 | return( ret ); |
| 498 | expansion = (size_t) ret; |
| 499 | |
| 500 | if( remaining <= expansion ) |
| 501 | return( 0 ); |
| 502 | |
| 503 | remaining -= expansion; |
| 504 | if( remaining >= max_len ) |
| 505 | remaining = max_len; |
| 506 | |
| 507 | return( (int) remaining ); |
| 508 | } |
| 509 | |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 510 | /* |
| 511 | * Double the retransmit timeout value, within the allowed range, |
| 512 | * returning -1 if the maximum value has already been reached. |
| 513 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 514 | static int ssl_double_retransmit_timeout( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 515 | { |
| 516 | uint32_t new_timeout; |
| 517 | |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 518 | if( ssl->handshake->retransmit_timeout >= |
| 519 | mbedtls_ssl_conf_get_hs_timeout_max( ssl->conf ) ) |
| 520 | { |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 521 | return( -1 ); |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 522 | } |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 523 | |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 524 | /* Implement the final paragraph of RFC 6347 section 4.1.1.1 |
| 525 | * in the following way: after the initial transmission and a first |
| 526 | * retransmission, back off to a temporary estimated MTU of 508 bytes. |
| 527 | * This value is guaranteed to be deliverable (if not guaranteed to be |
| 528 | * delivered) of any compliant IPv4 (and IPv6) network, and should work |
| 529 | * on most non-IP stacks too. */ |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 530 | if( ssl->handshake->retransmit_timeout != |
| 531 | mbedtls_ssl_conf_get_hs_timeout_min( ssl->conf ) ) |
Andrzej Kurek | 6290dae | 2018-10-05 08:06:01 -0400 | [diff] [blame] | 532 | { |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 533 | ssl->handshake->mtu = 508; |
Andrzej Kurek | 6290dae | 2018-10-05 08:06:01 -0400 | [diff] [blame] | 534 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "mtu autoreduction to %d bytes", ssl->handshake->mtu ) ); |
| 535 | } |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 536 | |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 537 | new_timeout = 2 * ssl->handshake->retransmit_timeout; |
| 538 | |
| 539 | /* Avoid arithmetic overflow and range overflow */ |
| 540 | if( new_timeout < ssl->handshake->retransmit_timeout || |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 541 | new_timeout > mbedtls_ssl_conf_get_hs_timeout_max( ssl->conf ) ) |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 542 | { |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 543 | new_timeout = mbedtls_ssl_conf_get_hs_timeout_max( ssl->conf ); |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | ssl->handshake->retransmit_timeout = new_timeout; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 547 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "update timeout value to %d millisecs", |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 548 | ssl->handshake->retransmit_timeout ) ); |
| 549 | |
| 550 | return( 0 ); |
| 551 | } |
| 552 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 553 | static void ssl_reset_retransmit_timeout( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 554 | { |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 555 | ssl->handshake->retransmit_timeout = mbedtls_ssl_conf_get_hs_timeout_min( ssl->conf ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 556 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "update timeout value to %d millisecs", |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 557 | ssl->handshake->retransmit_timeout ) ); |
| 558 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 559 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 560 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 561 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
Manuel Pégourié-Gonnard | 581e6b6 | 2013-07-18 12:32:27 +0200 | [diff] [blame] | 562 | /* |
| 563 | * Convert max_fragment_length codes to length. |
| 564 | * RFC 6066 says: |
| 565 | * enum{ |
| 566 | * 2^9(1), 2^10(2), 2^11(3), 2^12(4), (255) |
| 567 | * } MaxFragmentLength; |
| 568 | * and we add 0 -> extension unused |
| 569 | */ |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 570 | static unsigned int ssl_mfl_code_to_length( int mfl ) |
Manuel Pégourié-Gonnard | 581e6b6 | 2013-07-18 12:32:27 +0200 | [diff] [blame] | 571 | { |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 572 | switch( mfl ) |
| 573 | { |
| 574 | case MBEDTLS_SSL_MAX_FRAG_LEN_NONE: |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 575 | return( MBEDTLS_TLS_EXT_ADV_CONTENT_LEN ); |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 576 | case MBEDTLS_SSL_MAX_FRAG_LEN_512: |
| 577 | return 512; |
| 578 | case MBEDTLS_SSL_MAX_FRAG_LEN_1024: |
| 579 | return 1024; |
| 580 | case MBEDTLS_SSL_MAX_FRAG_LEN_2048: |
| 581 | return 2048; |
| 582 | case MBEDTLS_SSL_MAX_FRAG_LEN_4096: |
| 583 | return 4096; |
| 584 | default: |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 585 | return( MBEDTLS_TLS_EXT_ADV_CONTENT_LEN ); |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 586 | } |
| 587 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 588 | #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ |
Manuel Pégourié-Gonnard | 581e6b6 | 2013-07-18 12:32:27 +0200 | [diff] [blame] | 589 | |
Hanno Becker | 58fccf2 | 2019-02-06 14:30:46 +0000 | [diff] [blame] | 590 | int mbedtls_ssl_session_copy( mbedtls_ssl_session *dst, |
| 591 | const mbedtls_ssl_session *src ) |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 592 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 593 | mbedtls_ssl_session_free( dst ); |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 594 | mbedtls_platform_memcpy( dst, src, sizeof( mbedtls_ssl_session ) ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 595 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 596 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | d5258fa | 2019-02-07 12:27:42 +0000 | [diff] [blame] | 597 | |
| 598 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 599 | if( src->peer_cert != NULL ) |
| 600 | { |
Paul Bakker | 2292d1f | 2013-09-15 17:06:49 +0200 | [diff] [blame] | 601 | int ret; |
| 602 | |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 603 | dst->peer_cert = mbedtls_calloc( 1, sizeof(mbedtls_x509_crt) ); |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 604 | if( dst->peer_cert == NULL ) |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 605 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 606 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 607 | mbedtls_x509_crt_init( dst->peer_cert ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 608 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 609 | if( ( ret = mbedtls_x509_crt_parse_der( dst->peer_cert, src->peer_cert->raw.p, |
Manuel Pégourié-Gonnard | 4d2a8eb | 2014-06-13 20:33:27 +0200 | [diff] [blame] | 610 | src->peer_cert->raw.len ) ) != 0 ) |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 611 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 612 | mbedtls_free( dst->peer_cert ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 613 | dst->peer_cert = NULL; |
| 614 | return( ret ); |
| 615 | } |
| 616 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 617 | #elif defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 9fb6e2e | 2019-02-05 17:00:50 +0000 | [diff] [blame] | 618 | if( src->peer_cert_digest != NULL ) |
| 619 | { |
Hanno Becker | 9fb6e2e | 2019-02-05 17:00:50 +0000 | [diff] [blame] | 620 | dst->peer_cert_digest = |
Hanno Becker | 9d64b78 | 2019-02-25 10:06:59 +0000 | [diff] [blame] | 621 | mbedtls_calloc( 1, src->peer_cert_digest_len ); |
Hanno Becker | 9fb6e2e | 2019-02-05 17:00:50 +0000 | [diff] [blame] | 622 | if( dst->peer_cert_digest == NULL ) |
| 623 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
| 624 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 625 | mbedtls_platform_memcpy( dst->peer_cert_digest, src->peer_cert_digest, |
Hanno Becker | 9fb6e2e | 2019-02-05 17:00:50 +0000 | [diff] [blame] | 626 | src->peer_cert_digest_len ); |
| 627 | dst->peer_cert_digest_type = src->peer_cert_digest_type; |
Hanno Becker | 9d64b78 | 2019-02-25 10:06:59 +0000 | [diff] [blame] | 628 | dst->peer_cert_digest_len = src->peer_cert_digest_len; |
Hanno Becker | 9fb6e2e | 2019-02-05 17:00:50 +0000 | [diff] [blame] | 629 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 630 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && MBEDTLS_SSL_RENEGOTIATION */ |
Hanno Becker | 9fb6e2e | 2019-02-05 17:00:50 +0000 | [diff] [blame] | 631 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 632 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 633 | |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 634 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C) |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 635 | if( src->ticket != NULL ) |
| 636 | { |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 637 | dst->ticket = mbedtls_calloc( 1, src->ticket_len ); |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 638 | if( dst->ticket == NULL ) |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 639 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 640 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 641 | mbedtls_platform_memcpy( dst->ticket, src->ticket, src->ticket_len ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 642 | } |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 643 | #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */ |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 644 | |
| 645 | return( 0 ); |
| 646 | } |
| 647 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 648 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 649 | static int resize_buffer( unsigned char **buffer, size_t len_new, size_t *len_old ) |
| 650 | { |
| 651 | unsigned char* resized_buffer = mbedtls_calloc( 1, len_new ); |
| 652 | if( resized_buffer == NULL ) |
| 653 | return -1; |
| 654 | |
| 655 | /* We want to copy len_new bytes when downsizing the buffer, and |
| 656 | * len_old bytes when upsizing, so we choose the smaller of two sizes, |
| 657 | * to fit one buffer into another. Size checks, ensuring that no data is |
| 658 | * lost, are done outside of this function. */ |
| 659 | memcpy( resized_buffer, *buffer, |
| 660 | ( len_new < *len_old ) ? len_new : *len_old ); |
| 661 | mbedtls_platform_zeroize( *buffer, *len_old ); |
| 662 | mbedtls_free( *buffer ); |
| 663 | |
| 664 | *buffer = resized_buffer; |
| 665 | *len_old = len_new; |
| 666 | |
| 667 | return 0; |
| 668 | } |
Andrzej Kurek | 79db2f1 | 2020-10-20 17:10:38 +0200 | [diff] [blame] | 669 | |
Andrzej Kurek | cd9a6ff | 2020-10-22 11:12:07 +0200 | [diff] [blame] | 670 | #define BUFFER_UPSIZING 0 |
| 671 | #define BUFFER_DOWNSIZING 1 |
Andrzej Kurek | 79db2f1 | 2020-10-20 17:10:38 +0200 | [diff] [blame] | 672 | static void handle_buffer_resizing( mbedtls_ssl_context *ssl, int downsizing, |
| 673 | uint32_t in_buf_new_len, |
| 674 | uint32_t out_buf_new_len ) |
| 675 | { |
| 676 | int modified = 0; |
| 677 | size_t written_in = 0, len_offset_in = 0; |
| 678 | size_t written_out = 0, iv_offset_out = 0, len_offset_out = 0; |
| 679 | if( ssl->in_buf != NULL ) |
| 680 | { |
| 681 | written_in = ssl->in_msg - ssl->in_buf; |
| 682 | len_offset_in = ssl->in_len - ssl->in_buf; |
| 683 | if( ( downsizing && ssl->in_buf_len > in_buf_new_len && ssl->in_left < in_buf_new_len ) || |
| 684 | ( !downsizing && ssl->in_buf_len < in_buf_new_len ) ) |
| 685 | { |
| 686 | if( resize_buffer( &ssl->in_buf, in_buf_new_len, &ssl->in_buf_len ) != 0 ) |
| 687 | { |
Andrzej Kurek | 2e49d07 | 2020-10-22 11:16:25 +0200 | [diff] [blame^] | 688 | /* No need to return an error here; The buffer will remain as |
| 689 | * is with no negative impact on the flow. */ |
Andrzej Kurek | 79db2f1 | 2020-10-20 17:10:38 +0200 | [diff] [blame] | 690 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "input buffer resizing failed - out of memory" ) ); |
| 691 | } |
| 692 | else |
| 693 | { |
| 694 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Reallocating in_buf to %d", in_buf_new_len ) ); |
| 695 | modified = 1; |
| 696 | } |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | if( ssl->out_buf != NULL ) |
| 701 | { |
| 702 | written_out = ssl->out_msg - ssl->out_buf; |
| 703 | iv_offset_out = ssl->out_iv - ssl->out_buf; |
| 704 | len_offset_out = ssl->out_len - ssl->out_buf; |
| 705 | if( ( downsizing && ssl->out_buf_len > out_buf_new_len && ssl->out_left < out_buf_new_len ) || |
| 706 | ( !downsizing && ssl->out_buf_len < out_buf_new_len ) ) |
| 707 | { |
| 708 | if( resize_buffer( &ssl->out_buf, out_buf_new_len, &ssl->out_buf_len ) != 0 ) |
| 709 | { |
Andrzej Kurek | 2e49d07 | 2020-10-22 11:16:25 +0200 | [diff] [blame^] | 710 | /* No need to return an error here; The buffer will remain as |
| 711 | * is with no negative impact on the flow. */ |
Andrzej Kurek | 79db2f1 | 2020-10-20 17:10:38 +0200 | [diff] [blame] | 712 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "output buffer resizing failed - out of memory" ) ); |
| 713 | } |
| 714 | else |
| 715 | { |
| 716 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Reallocating out_buf to %d", out_buf_new_len ) ); |
| 717 | modified = 1; |
| 718 | } |
| 719 | } |
| 720 | } |
| 721 | if( modified ) |
| 722 | { |
| 723 | /* Update pointers here to avoid doing it twice. */ |
| 724 | ssl_reset_in_out_pointers( ssl ); |
| 725 | /* Fields below might not be properly updated with record |
| 726 | * splitting or with CID, so they are manually updated here. */ |
| 727 | ssl->out_msg = ssl->out_buf + written_out; |
| 728 | ssl->out_len = ssl->out_buf + len_offset_out; |
| 729 | ssl->out_iv = ssl->out_buf + iv_offset_out; |
| 730 | |
| 731 | ssl->in_msg = ssl->in_buf + written_in; |
| 732 | ssl->in_len = ssl->in_buf + len_offset_in; |
| 733 | } |
| 734 | } |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 735 | #endif /* MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH */ |
| 736 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 737 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 738 | int (*mbedtls_ssl_hw_record_init)( mbedtls_ssl_context *ssl, |
Paul Bakker | 9af723c | 2014-05-01 13:03:14 +0200 | [diff] [blame] | 739 | const unsigned char *key_enc, const unsigned char *key_dec, |
| 740 | size_t keylen, |
| 741 | const unsigned char *iv_enc, const unsigned char *iv_dec, |
| 742 | size_t ivlen, |
| 743 | const unsigned char *mac_enc, const unsigned char *mac_dec, |
Paul Bakker | 66d5d07 | 2014-06-17 16:39:18 +0200 | [diff] [blame] | 744 | size_t maclen ) = NULL; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 745 | int (*mbedtls_ssl_hw_record_activate)( mbedtls_ssl_context *ssl, int direction) = NULL; |
| 746 | int (*mbedtls_ssl_hw_record_reset)( mbedtls_ssl_context *ssl ) = NULL; |
| 747 | int (*mbedtls_ssl_hw_record_write)( mbedtls_ssl_context *ssl ) = NULL; |
| 748 | int (*mbedtls_ssl_hw_record_read)( mbedtls_ssl_context *ssl ) = NULL; |
| 749 | int (*mbedtls_ssl_hw_record_finish)( mbedtls_ssl_context *ssl ) = NULL; |
| 750 | #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 751 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 752 | /* |
| 753 | * Key material generation |
| 754 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 755 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 756 | MBEDTLS_NO_INLINE static int ssl3_prf( const unsigned char *secret, size_t slen, |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 757 | const char *label, |
| 758 | const unsigned char *random, size_t rlen, |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 759 | unsigned char *dstbuf, size_t dlen ) |
| 760 | { |
Andres Amaya Garcia | 3395250 | 2017-07-20 16:29:16 +0100 | [diff] [blame] | 761 | int ret = 0; |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 762 | size_t i; |
Manuel Pégourié-Gonnard | c0bf01e | 2015-07-06 16:11:18 +0200 | [diff] [blame] | 763 | mbedtls_md5_context md5; |
| 764 | mbedtls_sha1_context sha1; |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 765 | unsigned char padding[16]; |
| 766 | unsigned char sha1sum[20]; |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 767 | ((void)label); |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 768 | |
Manuel Pégourié-Gonnard | c0bf01e | 2015-07-06 16:11:18 +0200 | [diff] [blame] | 769 | mbedtls_md5_init( &md5 ); |
| 770 | mbedtls_sha1_init( &sha1 ); |
Paul Bakker | 5b4af39 | 2014-06-26 12:09:34 +0200 | [diff] [blame] | 771 | |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 772 | /* |
| 773 | * SSLv3: |
| 774 | * block = |
| 775 | * MD5( secret + SHA1( 'A' + secret + random ) ) + |
| 776 | * MD5( secret + SHA1( 'BB' + secret + random ) ) + |
| 777 | * MD5( secret + SHA1( 'CCC' + secret + random ) ) + |
| 778 | * ... |
| 779 | */ |
| 780 | for( i = 0; i < dlen / 16; i++ ) |
| 781 | { |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 782 | mbedtls_platform_memset( padding, (unsigned char) ('A' + i), 1 + i ); |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 783 | |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 784 | if( ( ret = mbedtls_sha1_starts_ret( &sha1 ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 785 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 786 | if( ( ret = mbedtls_sha1_update_ret( &sha1, padding, 1 + i ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 787 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 788 | if( ( ret = mbedtls_sha1_update_ret( &sha1, secret, slen ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 789 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 790 | if( ( ret = mbedtls_sha1_update_ret( &sha1, random, rlen ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 791 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 792 | if( ( ret = mbedtls_sha1_finish_ret( &sha1, sha1sum ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 793 | goto exit; |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 794 | |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 795 | if( ( ret = mbedtls_md5_starts_ret( &md5 ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 796 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 797 | if( ( ret = mbedtls_md5_update_ret( &md5, secret, slen ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 798 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 799 | if( ( ret = mbedtls_md5_update_ret( &md5, sha1sum, 20 ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 800 | goto exit; |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 801 | if( ( ret = mbedtls_md5_finish_ret( &md5, dstbuf + i * 16 ) ) != 0 ) |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 802 | goto exit; |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 803 | } |
| 804 | |
Andres Amaya Garcia | 1a607a1 | 2017-06-29 17:09:42 +0100 | [diff] [blame] | 805 | exit: |
Manuel Pégourié-Gonnard | c0bf01e | 2015-07-06 16:11:18 +0200 | [diff] [blame] | 806 | mbedtls_md5_free( &md5 ); |
| 807 | mbedtls_sha1_free( &sha1 ); |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 808 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 809 | mbedtls_platform_zeroize( padding, sizeof( padding ) ); |
| 810 | mbedtls_platform_zeroize( sha1sum, sizeof( sha1sum ) ); |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 811 | |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 812 | return( ret ); |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 813 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 814 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 815 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 816 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 817 | MBEDTLS_NO_INLINE static int tls1_prf( const unsigned char *secret, size_t slen, |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 818 | const char *label, |
| 819 | const unsigned char *random, size_t rlen, |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 820 | unsigned char *dstbuf, size_t dlen ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 821 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 822 | size_t nb, hs; |
| 823 | size_t i, j, k; |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 824 | const unsigned char *S1, *S2; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 825 | unsigned char tmp[128]; |
| 826 | unsigned char h_i[20]; |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 827 | mbedtls_md_handle_t md_info; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 828 | mbedtls_md_context_t md_ctx; |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 829 | int ret; |
| 830 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 831 | mbedtls_md_init( &md_ctx ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 832 | |
| 833 | if( sizeof( tmp ) < 20 + strlen( label ) + rlen ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 834 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 835 | |
| 836 | hs = ( slen + 1 ) / 2; |
| 837 | S1 = secret; |
| 838 | S2 = secret + slen - hs; |
| 839 | |
| 840 | nb = strlen( label ); |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 841 | mbedtls_platform_memcpy( tmp + 20, label, nb ); |
| 842 | mbedtls_platform_memcpy( tmp + 20 + nb, random, rlen ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 843 | nb += rlen; |
| 844 | |
| 845 | /* |
| 846 | * First compute P_md5(secret,label+random)[0..dlen] |
| 847 | */ |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 848 | if( ( md_info = mbedtls_md_info_from_type( MBEDTLS_MD_MD5 ) ) == |
| 849 | MBEDTLS_MD_INVALID_HANDLE ) |
| 850 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 851 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 852 | } |
Manuel Pégourié-Gonnard | 7da726b | 2015-03-24 18:08:19 +0100 | [diff] [blame] | 853 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 854 | if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 ) |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 855 | return( ret ); |
| 856 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 857 | mbedtls_md_hmac_starts( &md_ctx, S1, hs ); |
| 858 | mbedtls_md_hmac_update( &md_ctx, tmp + 20, nb ); |
| 859 | mbedtls_md_hmac_finish( &md_ctx, 4 + tmp ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 860 | |
| 861 | for( i = 0; i < dlen; i += 16 ) |
| 862 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 863 | mbedtls_md_hmac_reset ( &md_ctx ); |
| 864 | mbedtls_md_hmac_update( &md_ctx, 4 + tmp, 16 + nb ); |
| 865 | mbedtls_md_hmac_finish( &md_ctx, h_i ); |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 866 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 867 | mbedtls_md_hmac_reset ( &md_ctx ); |
| 868 | mbedtls_md_hmac_update( &md_ctx, 4 + tmp, 16 ); |
| 869 | mbedtls_md_hmac_finish( &md_ctx, 4 + tmp ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 870 | |
| 871 | k = ( i + 16 > dlen ) ? dlen % 16 : 16; |
| 872 | |
| 873 | for( j = 0; j < k; j++ ) |
| 874 | dstbuf[i + j] = h_i[j]; |
| 875 | } |
| 876 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 877 | mbedtls_md_free( &md_ctx ); |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 878 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 879 | /* |
| 880 | * XOR out with P_sha1(secret,label+random)[0..dlen] |
| 881 | */ |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 882 | if( ( md_info = mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 ) ) == |
| 883 | MBEDTLS_MD_INVALID_HANDLE ) |
| 884 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 885 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 886 | } |
Manuel Pégourié-Gonnard | 7da726b | 2015-03-24 18:08:19 +0100 | [diff] [blame] | 887 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 888 | if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 ) |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 889 | return( ret ); |
| 890 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 891 | mbedtls_md_hmac_starts( &md_ctx, S2, hs ); |
| 892 | mbedtls_md_hmac_update( &md_ctx, tmp + 20, nb ); |
| 893 | mbedtls_md_hmac_finish( &md_ctx, tmp ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 894 | |
| 895 | for( i = 0; i < dlen; i += 20 ) |
| 896 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 897 | mbedtls_md_hmac_reset ( &md_ctx ); |
| 898 | mbedtls_md_hmac_update( &md_ctx, tmp, 20 + nb ); |
| 899 | mbedtls_md_hmac_finish( &md_ctx, h_i ); |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 900 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 901 | mbedtls_md_hmac_reset ( &md_ctx ); |
| 902 | mbedtls_md_hmac_update( &md_ctx, tmp, 20 ); |
| 903 | mbedtls_md_hmac_finish( &md_ctx, tmp ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 904 | |
| 905 | k = ( i + 20 > dlen ) ? dlen % 20 : 20; |
| 906 | |
| 907 | for( j = 0; j < k; j++ ) |
| 908 | dstbuf[i + j] = (unsigned char)( dstbuf[i + j] ^ h_i[j] ); |
| 909 | } |
| 910 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 911 | mbedtls_md_free( &md_ctx ); |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 912 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 913 | mbedtls_platform_zeroize( tmp, sizeof( tmp ) ); |
| 914 | mbedtls_platform_zeroize( h_i, sizeof( h_i ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 915 | |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 916 | return( 0 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 917 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 918 | #endif /* MBEDTLS_SSL_PROTO_TLS1) || MBEDTLS_SSL_PROTO_TLS1_1 */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 919 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 920 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | f6cc742 | 2019-08-16 14:34:52 +0100 | [diff] [blame] | 921 | #if !( defined(MBEDTLS_SHA256_C) && defined(MBEDTLS_SHA512_C) ) |
| 922 | MBEDTLS_ALWAYS_INLINE static inline |
| 923 | #else |
| 924 | static |
| 925 | #endif |
| 926 | int tls_prf_generic( mbedtls_md_type_t md_type, |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 927 | const unsigned char *secret, size_t slen, |
| 928 | const char *label, |
| 929 | const unsigned char *random, size_t rlen, |
| 930 | unsigned char *dstbuf, size_t dlen ) |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 931 | { |
| 932 | size_t nb; |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 933 | size_t i, j, k, md_len; |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 934 | unsigned char tmp[128]; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 935 | unsigned char h_i[MBEDTLS_MD_MAX_SIZE]; |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 936 | mbedtls_md_handle_t md_info; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 937 | mbedtls_md_context_t md_ctx; |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 938 | int ret; |
| 939 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 940 | mbedtls_md_init( &md_ctx ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 941 | |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 942 | if( ( md_info = mbedtls_md_info_from_type( md_type ) ) == |
| 943 | MBEDTLS_MD_INVALID_HANDLE ) |
| 944 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 945 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 946 | } |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 947 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 948 | md_len = mbedtls_md_get_size( md_info ); |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 949 | |
| 950 | if( sizeof( tmp ) < md_len + strlen( label ) + rlen ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 951 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 952 | |
| 953 | nb = strlen( label ); |
Teppo Järvelin | 8f7e36f | 2020-01-02 10:40:19 +0200 | [diff] [blame] | 954 | (void)mbedtls_platform_memcpy( tmp + md_len, label, nb ); |
| 955 | (void)mbedtls_platform_memcpy( tmp + md_len + nb, random, rlen ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 956 | nb += rlen; |
| 957 | |
| 958 | /* |
| 959 | * Compute P_<hash>(secret, label + random)[0..dlen] |
| 960 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 961 | if ( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 ) |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 962 | return( ret ); |
| 963 | |
Teppo Järvelin | 8f7e36f | 2020-01-02 10:40:19 +0200 | [diff] [blame] | 964 | if ( ( ret = mbedtls_md_hmac_starts( &md_ctx, secret, slen ) ) != 0 ) |
| 965 | return( ret ); |
| 966 | if ( ( ret = mbedtls_md_hmac_update( &md_ctx, tmp + md_len, nb ) ) != 0 ) |
| 967 | return( ret ); |
| 968 | if ( ( ret = mbedtls_md_hmac_finish( &md_ctx, tmp ) ) != 0 ) |
| 969 | return( ret ); |
Manuel Pégourié-Gonnard | 7da726b | 2015-03-24 18:08:19 +0100 | [diff] [blame] | 970 | |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 971 | for( i = 0; i < dlen; i += md_len ) |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 972 | { |
Teppo Järvelin | 8f7e36f | 2020-01-02 10:40:19 +0200 | [diff] [blame] | 973 | if ( ( ret = mbedtls_md_hmac_reset ( &md_ctx ) ) != 0 ) |
| 974 | return( ret ); |
| 975 | if ( ( ret = mbedtls_md_hmac_update( &md_ctx, tmp, md_len + nb ) ) != 0 ) |
| 976 | return( ret ); |
| 977 | if ( ( ret = mbedtls_md_hmac_finish( &md_ctx, h_i ) ) != 0 ) |
| 978 | return( ret ); |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 979 | |
Teppo Järvelin | 8f7e36f | 2020-01-02 10:40:19 +0200 | [diff] [blame] | 980 | if ( ( ret = mbedtls_md_hmac_reset ( &md_ctx ) ) != 0 ) |
| 981 | return( ret ); |
| 982 | if ( ( ret = mbedtls_md_hmac_update( &md_ctx, tmp, md_len ) ) != 0 ) |
| 983 | return( ret ); |
| 984 | if ( ( ret = mbedtls_md_hmac_finish( &md_ctx, tmp ) ) != 0 ) |
| 985 | return( ret ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 986 | |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 987 | k = ( i + md_len > dlen ) ? dlen % md_len : md_len; |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 988 | |
| 989 | for( j = 0; j < k; j++ ) |
| 990 | dstbuf[i + j] = h_i[j]; |
| 991 | } |
| 992 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 993 | mbedtls_md_free( &md_ctx ); |
Manuel Pégourié-Gonnard | b7fcca3 | 2015-03-26 11:41:28 +0100 | [diff] [blame] | 994 | |
Teppo Järvelin | 8f7e36f | 2020-01-02 10:40:19 +0200 | [diff] [blame] | 995 | (void)mbedtls_platform_zeroize( tmp, sizeof( tmp ) ); |
| 996 | (void)mbedtls_platform_zeroize( h_i, sizeof( h_i ) ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 997 | |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 998 | return( 0 ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 999 | } |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 1000 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1001 | #if defined(MBEDTLS_SHA256_C) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1002 | MBEDTLS_NO_INLINE static int tls_prf_sha256( |
| 1003 | const unsigned char *secret, size_t slen, |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 1004 | const char *label, |
| 1005 | const unsigned char *random, size_t rlen, |
| 1006 | unsigned char *dstbuf, size_t dlen ) |
| 1007 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1008 | return( tls_prf_generic( MBEDTLS_MD_SHA256, secret, slen, |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 1009 | label, random, rlen, dstbuf, dlen ) ); |
| 1010 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1011 | #endif /* MBEDTLS_SHA256_C */ |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 1012 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1013 | #if defined(MBEDTLS_SHA512_C) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1014 | MBEDTLS_NO_INLINE static int tls_prf_sha384( |
| 1015 | const unsigned char *secret, size_t slen, |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 1016 | const char *label, |
| 1017 | const unsigned char *random, size_t rlen, |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 1018 | unsigned char *dstbuf, size_t dlen ) |
| 1019 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1020 | return( tls_prf_generic( MBEDTLS_MD_SHA384, secret, slen, |
Manuel Pégourié-Gonnard | 6890c6b | 2015-03-26 11:11:49 +0100 | [diff] [blame] | 1021 | label, random, rlen, dstbuf, dlen ) ); |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 1022 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1023 | #endif /* MBEDTLS_SHA512_C */ |
| 1024 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 1025 | |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 1026 | /* |
| 1027 | * Call the appropriate PRF function |
| 1028 | */ |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1029 | MBEDTLS_ALWAYS_INLINE static inline int ssl_prf( int minor_ver, |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 1030 | mbedtls_md_type_t hash, |
| 1031 | const unsigned char *secret, size_t slen, |
| 1032 | const char *label, |
| 1033 | const unsigned char *random, size_t rlen, |
| 1034 | unsigned char *dstbuf, size_t dlen ) |
| 1035 | { |
| 1036 | #if !defined(MBEDTLS_SSL_PROTO_TLS1_2) || !defined(MBEDTLS_SHA512_C) |
| 1037 | (void) hash; |
| 1038 | #endif |
| 1039 | |
| 1040 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
| 1041 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ) |
| 1042 | return( ssl3_prf( secret, slen, label, random, rlen, dstbuf, dlen ) ); |
| 1043 | else |
| 1044 | #endif |
| 1045 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 1046 | if( mbedtls_ssl_ver_lt( minor_ver, MBEDTLS_SSL_MINOR_VERSION_3 ) ) |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 1047 | return( tls1_prf( secret, slen, label, random, rlen, dstbuf, dlen ) ); |
| 1048 | else |
| 1049 | #endif |
| 1050 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 1051 | #if defined(MBEDTLS_SHA512_C) |
| 1052 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 && |
| 1053 | hash == MBEDTLS_MD_SHA384 ) |
| 1054 | { |
| 1055 | return( tls_prf_sha384( secret, slen, label, random, rlen, |
| 1056 | dstbuf, dlen ) ); |
| 1057 | } |
| 1058 | else |
| 1059 | #endif |
| 1060 | #if defined(MBEDTLS_SHA256_C) |
| 1061 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 ) |
| 1062 | { |
| 1063 | return( tls_prf_sha256( secret, slen, label, random, rlen, |
| 1064 | dstbuf, dlen ) ); |
| 1065 | } |
| 1066 | #endif |
| 1067 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 1068 | |
| 1069 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 1070 | } |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1071 | |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1072 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1073 | MBEDTLS_NO_INLINE static void ssl_calc_finished_ssl( |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1074 | mbedtls_ssl_context *ssl, unsigned char *buf, int from ) |
| 1075 | { |
| 1076 | const char *sender; |
| 1077 | mbedtls_md5_context md5; |
| 1078 | mbedtls_sha1_context sha1; |
| 1079 | |
| 1080 | unsigned char padbuf[48]; |
| 1081 | unsigned char md5sum[16]; |
| 1082 | unsigned char sha1sum[20]; |
| 1083 | |
| 1084 | mbedtls_ssl_session *session = ssl->session_negotiate; |
| 1085 | if( !session ) |
| 1086 | session = ssl->session; |
| 1087 | |
| 1088 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished ssl" ) ); |
| 1089 | |
| 1090 | mbedtls_md5_init( &md5 ); |
| 1091 | mbedtls_sha1_init( &sha1 ); |
| 1092 | |
| 1093 | mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 ); |
| 1094 | mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 ); |
| 1095 | |
| 1096 | /* |
| 1097 | * SSLv3: |
| 1098 | * hash = |
| 1099 | * MD5( master + pad2 + |
| 1100 | * MD5( handshake + sender + master + pad1 ) ) |
| 1101 | * + SHA1( master + pad2 + |
| 1102 | * SHA1( handshake + sender + master + pad1 ) ) |
| 1103 | */ |
| 1104 | |
| 1105 | #if !defined(MBEDTLS_MD5_ALT) |
| 1106 | MBEDTLS_SSL_DEBUG_BUF( 4, "finished md5 state", (unsigned char *) |
| 1107 | md5.state, sizeof( md5.state ) ); |
| 1108 | #endif |
| 1109 | |
| 1110 | #if !defined(MBEDTLS_SHA1_ALT) |
| 1111 | MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha1 state", (unsigned char *) |
| 1112 | sha1.state, sizeof( sha1.state ) ); |
| 1113 | #endif |
| 1114 | |
| 1115 | sender = ( from == MBEDTLS_SSL_IS_CLIENT ) ? "CLNT" |
| 1116 | : "SRVR"; |
| 1117 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 1118 | mbedtls_platform_memset( padbuf, 0x36, 48 ); |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1119 | |
| 1120 | mbedtls_md5_update_ret( &md5, (const unsigned char *) sender, 4 ); |
| 1121 | mbedtls_md5_update_ret( &md5, session->master, 48 ); |
| 1122 | mbedtls_md5_update_ret( &md5, padbuf, 48 ); |
| 1123 | mbedtls_md5_finish_ret( &md5, md5sum ); |
| 1124 | |
| 1125 | mbedtls_sha1_update_ret( &sha1, (const unsigned char *) sender, 4 ); |
| 1126 | mbedtls_sha1_update_ret( &sha1, session->master, 48 ); |
| 1127 | mbedtls_sha1_update_ret( &sha1, padbuf, 40 ); |
| 1128 | mbedtls_sha1_finish_ret( &sha1, sha1sum ); |
| 1129 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 1130 | mbedtls_platform_memset( padbuf, 0x5C, 48 ); |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1131 | |
| 1132 | mbedtls_md5_starts_ret( &md5 ); |
| 1133 | mbedtls_md5_update_ret( &md5, session->master, 48 ); |
| 1134 | mbedtls_md5_update_ret( &md5, padbuf, 48 ); |
| 1135 | mbedtls_md5_update_ret( &md5, md5sum, 16 ); |
| 1136 | mbedtls_md5_finish_ret( &md5, buf ); |
| 1137 | |
| 1138 | mbedtls_sha1_starts_ret( &sha1 ); |
| 1139 | mbedtls_sha1_update_ret( &sha1, session->master, 48 ); |
| 1140 | mbedtls_sha1_update_ret( &sha1, padbuf , 40 ); |
| 1141 | mbedtls_sha1_update_ret( &sha1, sha1sum, 20 ); |
| 1142 | mbedtls_sha1_finish_ret( &sha1, buf + 16 ); |
| 1143 | |
| 1144 | MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, 36 ); |
| 1145 | |
| 1146 | mbedtls_md5_free( &md5 ); |
| 1147 | mbedtls_sha1_free( &sha1 ); |
| 1148 | |
| 1149 | mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) ); |
| 1150 | mbedtls_platform_zeroize( md5sum, sizeof( md5sum ) ); |
| 1151 | mbedtls_platform_zeroize( sha1sum, sizeof( sha1sum ) ); |
| 1152 | |
| 1153 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) ); |
| 1154 | } |
| 1155 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 1156 | |
| 1157 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1158 | MBEDTLS_NO_INLINE static void ssl_calc_finished_tls( |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1159 | mbedtls_ssl_context *ssl, unsigned char *buf, int from ) |
| 1160 | { |
| 1161 | int len = 12; |
| 1162 | const char *sender; |
| 1163 | mbedtls_md5_context md5; |
| 1164 | mbedtls_sha1_context sha1; |
| 1165 | unsigned char padbuf[36]; |
| 1166 | |
| 1167 | mbedtls_ssl_session *session = ssl->session_negotiate; |
| 1168 | if( !session ) |
| 1169 | session = ssl->session; |
| 1170 | |
| 1171 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls" ) ); |
| 1172 | |
| 1173 | mbedtls_md5_init( &md5 ); |
| 1174 | mbedtls_sha1_init( &sha1 ); |
| 1175 | |
| 1176 | mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 ); |
| 1177 | mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 ); |
| 1178 | |
| 1179 | /* |
| 1180 | * TLSv1: |
| 1181 | * hash = PRF( master, finished_label, |
| 1182 | * MD5( handshake ) + SHA1( handshake ) )[0..11] |
| 1183 | */ |
| 1184 | |
| 1185 | #if !defined(MBEDTLS_MD5_ALT) |
| 1186 | MBEDTLS_SSL_DEBUG_BUF( 4, "finished md5 state", (unsigned char *) |
| 1187 | md5.state, sizeof( md5.state ) ); |
| 1188 | #endif |
| 1189 | |
| 1190 | #if !defined(MBEDTLS_SHA1_ALT) |
| 1191 | MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha1 state", (unsigned char *) |
| 1192 | sha1.state, sizeof( sha1.state ) ); |
| 1193 | #endif |
| 1194 | |
| 1195 | sender = ( from == MBEDTLS_SSL_IS_CLIENT ) |
| 1196 | ? "client finished" |
| 1197 | : "server finished"; |
| 1198 | |
| 1199 | mbedtls_md5_finish_ret( &md5, padbuf ); |
| 1200 | mbedtls_sha1_finish_ret( &sha1, padbuf + 16 ); |
| 1201 | |
| 1202 | ssl_prf( mbedtls_ssl_get_minor_ver( ssl ), |
| 1203 | mbedtls_ssl_suite_get_mac( |
| 1204 | mbedtls_ssl_ciphersuite_from_id( |
| 1205 | mbedtls_ssl_session_get_ciphersuite( session ) ) ), |
| 1206 | session->master, 48, sender, |
| 1207 | padbuf, 36, buf, len ); |
| 1208 | |
| 1209 | MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len ); |
| 1210 | |
| 1211 | mbedtls_md5_free( &md5 ); |
| 1212 | mbedtls_sha1_free( &sha1 ); |
| 1213 | |
| 1214 | mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) ); |
| 1215 | |
| 1216 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) ); |
| 1217 | } |
| 1218 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 */ |
| 1219 | |
| 1220 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 1221 | #if defined(MBEDTLS_SHA256_C) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1222 | MBEDTLS_NO_INLINE static void ssl_calc_finished_tls_sha256( |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1223 | mbedtls_ssl_context *ssl, unsigned char *buf, int from ) |
| 1224 | { |
| 1225 | int len = 12; |
| 1226 | const char *sender; |
| 1227 | mbedtls_sha256_context sha256; |
| 1228 | unsigned char padbuf[32]; |
| 1229 | |
| 1230 | mbedtls_ssl_session *session = ssl->session_negotiate; |
| 1231 | if( !session ) |
| 1232 | session = ssl->session; |
| 1233 | |
| 1234 | mbedtls_sha256_init( &sha256 ); |
| 1235 | |
| 1236 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls sha256" ) ); |
| 1237 | |
| 1238 | mbedtls_sha256_clone( &sha256, &ssl->handshake->fin_sha256 ); |
| 1239 | |
| 1240 | /* |
| 1241 | * TLSv1.2: |
| 1242 | * hash = PRF( master, finished_label, |
| 1243 | * Hash( handshake ) )[0.11] |
| 1244 | */ |
| 1245 | |
| 1246 | #if !defined(MBEDTLS_SHA256_ALT) |
| 1247 | MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha2 state", (unsigned char *) |
| 1248 | sha256.state, sizeof( sha256.state ) ); |
| 1249 | #endif |
| 1250 | |
| 1251 | sender = ( from == MBEDTLS_SSL_IS_CLIENT ) |
| 1252 | ? "client finished" |
| 1253 | : "server finished"; |
| 1254 | |
| 1255 | mbedtls_sha256_finish_ret( &sha256, padbuf ); |
| 1256 | |
| 1257 | ssl_prf( mbedtls_ssl_get_minor_ver( ssl ), |
| 1258 | mbedtls_ssl_suite_get_mac( |
| 1259 | mbedtls_ssl_ciphersuite_from_id( |
| 1260 | mbedtls_ssl_session_get_ciphersuite( session ) ) ), |
| 1261 | session->master, 48, sender, |
| 1262 | padbuf, 32, buf, len ); |
| 1263 | |
| 1264 | MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len ); |
| 1265 | |
| 1266 | mbedtls_sha256_free( &sha256 ); |
| 1267 | |
| 1268 | mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) ); |
| 1269 | |
| 1270 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) ); |
| 1271 | } |
| 1272 | #endif /* MBEDTLS_SHA256_C */ |
| 1273 | |
| 1274 | #if defined(MBEDTLS_SHA512_C) |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1275 | MBEDTLS_NO_INLINE static void ssl_calc_finished_tls_sha384( |
Hanno Becker | fc7429e | 2019-08-16 10:12:21 +0100 | [diff] [blame] | 1276 | mbedtls_ssl_context *ssl, unsigned char *buf, int from ) |
| 1277 | { |
| 1278 | int len = 12; |
| 1279 | const char *sender; |
| 1280 | mbedtls_sha512_context sha512; |
| 1281 | unsigned char padbuf[48]; |
| 1282 | |
| 1283 | mbedtls_ssl_session *session = ssl->session_negotiate; |
| 1284 | if( !session ) |
| 1285 | session = ssl->session; |
| 1286 | |
| 1287 | mbedtls_sha512_init( &sha512 ); |
| 1288 | |
| 1289 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls sha384" ) ); |
| 1290 | |
| 1291 | mbedtls_sha512_clone( &sha512, &ssl->handshake->fin_sha512 ); |
| 1292 | |
| 1293 | /* |
| 1294 | * TLSv1.2: |
| 1295 | * hash = PRF( master, finished_label, |
| 1296 | * Hash( handshake ) )[0.11] |
| 1297 | */ |
| 1298 | |
| 1299 | #if !defined(MBEDTLS_SHA512_ALT) |
| 1300 | MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha512 state", (unsigned char *) |
| 1301 | sha512.state, sizeof( sha512.state ) ); |
| 1302 | #endif |
| 1303 | |
| 1304 | sender = ( from == MBEDTLS_SSL_IS_CLIENT ) |
| 1305 | ? "client finished" |
| 1306 | : "server finished"; |
| 1307 | |
| 1308 | mbedtls_sha512_finish_ret( &sha512, padbuf ); |
| 1309 | |
| 1310 | ssl_prf( mbedtls_ssl_get_minor_ver( ssl ), |
| 1311 | mbedtls_ssl_suite_get_mac( |
| 1312 | mbedtls_ssl_ciphersuite_from_id( |
| 1313 | mbedtls_ssl_session_get_ciphersuite( session ) ) ), |
| 1314 | session->master, 48, sender, |
| 1315 | padbuf, 48, buf, len ); |
| 1316 | |
| 1317 | MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len ); |
| 1318 | |
| 1319 | mbedtls_sha512_free( &sha512 ); |
| 1320 | |
| 1321 | mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) ); |
| 1322 | |
| 1323 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) ); |
| 1324 | } |
| 1325 | #endif /* MBEDTLS_SHA512_C */ |
| 1326 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 1327 | |
Hanno Becker | 2793f74 | 2019-08-16 14:28:43 +0100 | [diff] [blame] | 1328 | MBEDTLS_ALWAYS_INLINE static inline int ssl_calc_finished( |
| 1329 | int minor_ver, |
Hanno Becker | c2fb759 | 2019-08-15 16:31:23 +0100 | [diff] [blame] | 1330 | mbedtls_md_type_t hash, |
| 1331 | mbedtls_ssl_context *ssl, |
| 1332 | unsigned char *buf, |
| 1333 | int from ) |
| 1334 | { |
| 1335 | #if !defined(MBEDTLS_SSL_PROTO_TLS1_2) || !defined(MBEDTLS_SHA512_C) |
| 1336 | (void) hash; |
| 1337 | #endif |
| 1338 | |
| 1339 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
| 1340 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ) |
| 1341 | ssl_calc_finished_ssl( ssl, buf, from ); |
| 1342 | else |
| 1343 | #endif |
| 1344 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 1345 | if( mbedtls_ssl_ver_lt( minor_ver, MBEDTLS_SSL_MINOR_VERSION_3 ) ) |
Hanno Becker | c2fb759 | 2019-08-15 16:31:23 +0100 | [diff] [blame] | 1346 | ssl_calc_finished_tls( ssl, buf, from ); |
| 1347 | else |
| 1348 | #endif |
| 1349 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 1350 | #if defined(MBEDTLS_SHA512_C) |
| 1351 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 && |
| 1352 | hash == MBEDTLS_MD_SHA384 ) |
| 1353 | { |
| 1354 | ssl_calc_finished_tls_sha384( ssl, buf, from ); |
| 1355 | } |
| 1356 | else |
| 1357 | #endif |
| 1358 | #if defined(MBEDTLS_SHA256_C) |
| 1359 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 ) |
| 1360 | ssl_calc_finished_tls_sha256( ssl, buf, from ); |
| 1361 | else |
| 1362 | #endif |
| 1363 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 1364 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 1365 | |
| 1366 | return( 0 ); |
| 1367 | } |
| 1368 | |
Manuel Pégourié-Gonnard | 5ed5e90 | 2019-04-30 11:41:40 +0200 | [diff] [blame] | 1369 | /* |
Manuel Pégourié-Gonnard | 12a3f44 | 2019-05-06 12:55:40 +0200 | [diff] [blame] | 1370 | * Populate a transform structure with session keys and all the other |
| 1371 | * necessary information. |
Manuel Pégourié-Gonnard | 5ed5e90 | 2019-04-30 11:41:40 +0200 | [diff] [blame] | 1372 | * |
Manuel Pégourié-Gonnard | 12a3f44 | 2019-05-06 12:55:40 +0200 | [diff] [blame] | 1373 | * Parameters: |
| 1374 | * - [in/out]: transform: structure to populate |
| 1375 | * [in] must be just initialised with mbedtls_ssl_transform_init() |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1376 | * [out] fully populated, ready for use by mbedtls_ssl_{en,de}crypt_buf() |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1377 | * - [in] ciphersuite |
| 1378 | * - [in] master |
| 1379 | * - [in] encrypt_then_mac |
| 1380 | * - [in] trunc_hmac |
| 1381 | * - [in] compression |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1382 | * - [in] tls_prf: pointer to PRF to use for key derivation |
| 1383 | * - [in] randbytes: buffer holding ServerHello.random + ClientHello.random |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1384 | * - [in] minor_ver: SSL/TLS minor version |
| 1385 | * - [in] endpoint: client or server |
| 1386 | * - [in] ssl: optionally used for: |
| 1387 | * - MBEDTLS_SSL_HW_RECORD_ACCEL: whole context |
| 1388 | * - MBEDTLS_SSL_EXPORT_KEYS: ssl->conf->{f,p}_export_keys |
| 1389 | * - MBEDTLS_DEBUG_C: ssl->conf->{f,p}_dbg |
Manuel Pégourié-Gonnard | 5ed5e90 | 2019-04-30 11:41:40 +0200 | [diff] [blame] | 1390 | */ |
Hanno Becker | 298a470 | 2019-08-16 10:21:32 +0100 | [diff] [blame] | 1391 | /* Force compilers to inline this function if it's used only |
| 1392 | * from one place, because at least ARMC5 doesn't do that |
| 1393 | * automatically. */ |
| 1394 | #if !defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) |
| 1395 | MBEDTLS_ALWAYS_INLINE static inline |
| 1396 | #else |
| 1397 | static |
| 1398 | #endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */ |
| 1399 | int ssl_populate_transform( mbedtls_ssl_transform *transform, |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1400 | int ciphersuite, |
| 1401 | const unsigned char master[48], |
Jaeden Amero | 2eaf2c7 | 2019-06-05 13:32:08 +0100 | [diff] [blame] | 1402 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1403 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
| 1404 | int encrypt_then_mac, |
| 1405 | #endif |
| 1406 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
| 1407 | int trunc_hmac, |
| 1408 | #endif |
Jaeden Amero | 2eaf2c7 | 2019-06-05 13:32:08 +0100 | [diff] [blame] | 1409 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1410 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 1411 | int compression, |
| 1412 | #endif |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1413 | const unsigned char randbytes[64], |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1414 | int minor_ver, |
| 1415 | unsigned endpoint, |
Manuel Pégourié-Gonnard | 13bebd0 | 2020-03-13 11:28:19 +0100 | [diff] [blame] | 1416 | #if !defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 1417 | const |
| 1418 | #endif |
| 1419 | mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1420 | { |
Paul Bakker | da02a7f | 2013-08-31 17:25:14 +0200 | [diff] [blame] | 1421 | int ret = 0; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1422 | unsigned char keyblk[256]; |
| 1423 | unsigned char *key1; |
| 1424 | unsigned char *key2; |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1425 | unsigned char *mac_enc; |
| 1426 | unsigned char *mac_dec; |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1427 | size_t mac_key_len; |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 1428 | size_t iv_copy_len; |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1429 | unsigned keylen; |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1430 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1431 | const mbedtls_cipher_info_t *cipher_info; |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 1432 | mbedtls_md_handle_t md_info; |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1433 | |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1434 | #if !defined(MBEDTLS_SSL_HW_RECORD_ACCEL) && \ |
| 1435 | !defined(MBEDTLS_SSL_EXPORT_KEYS) && \ |
| 1436 | !defined(MBEDTLS_DEBUG_C) |
Manuel Pégourié-Gonnard | 86e48c2 | 2019-05-07 10:17:56 +0200 | [diff] [blame] | 1437 | ssl = NULL; /* make sure we don't use it except for those cases */ |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1438 | (void) ssl; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 1439 | #endif |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 1440 | |
Manuel Pégourié-Gonnard | a3024ee | 2019-07-09 12:54:17 +0200 | [diff] [blame] | 1441 | /* |
| 1442 | * Some data just needs copying into the structure |
| 1443 | */ |
Jaeden Amero | 2eaf2c7 | 2019-06-05 13:32:08 +0100 | [diff] [blame] | 1444 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) && \ |
| 1445 | defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1446 | transform->encrypt_then_mac = encrypt_then_mac; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1447 | #endif |
Hanno Becker | 0a92b81 | 2019-06-24 15:46:40 +0100 | [diff] [blame] | 1448 | |
| 1449 | #if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER) |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1450 | transform->minor_ver = minor_ver; |
Hanno Becker | 0a92b81 | 2019-06-24 15:46:40 +0100 | [diff] [blame] | 1451 | #else |
| 1452 | ((void) minor_ver); |
| 1453 | #endif /* !MBEDTLS_SSL_CONF_FIXED_MINOR_VER */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1454 | |
Manuel Pégourié-Gonnard | a3024ee | 2019-07-09 12:54:17 +0200 | [diff] [blame] | 1455 | #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 1456 | mbedtls_platform_memcpy( transform->randbytes, randbytes, sizeof( transform->randbytes ) ); |
Manuel Pégourié-Gonnard | a3024ee | 2019-07-09 12:54:17 +0200 | [diff] [blame] | 1457 | #endif |
| 1458 | |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1459 | /* |
| 1460 | * Get various info structures |
| 1461 | */ |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1462 | ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( ciphersuite ); |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1463 | if( ciphersuite_info == MBEDTLS_SSL_CIPHERSUITE_INVALID_HANDLE ) |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1464 | { |
| 1465 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "ciphersuite info for %d not found", |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1466 | ciphersuite ) ); |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1467 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 1468 | } |
| 1469 | |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1470 | cipher_info = mbedtls_cipher_info_from_type( |
| 1471 | mbedtls_ssl_suite_get_cipher( ciphersuite_info ) ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1472 | if( cipher_info == NULL ) |
| 1473 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1474 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "cipher info for %d not found", |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1475 | mbedtls_ssl_suite_get_cipher( ciphersuite_info ) ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1476 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1477 | } |
| 1478 | |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1479 | md_info = mbedtls_md_info_from_type( |
| 1480 | mbedtls_ssl_suite_get_mac( ciphersuite_info ) ); |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 1481 | if( md_info == MBEDTLS_MD_INVALID_HANDLE ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1482 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1483 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "mbedtls_md info for %d not found", |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1484 | mbedtls_ssl_suite_get_mac( ciphersuite_info ) ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1485 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1486 | } |
| 1487 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 1488 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | dd0afca | 2019-04-26 16:22:27 +0100 | [diff] [blame] | 1489 | /* Copy own and peer's CID if the use of the CID |
| 1490 | * extension has been negotiated. */ |
| 1491 | if( ssl->handshake->cid_in_use == MBEDTLS_SSL_CID_ENABLED ) |
| 1492 | { |
| 1493 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Copy CIDs into SSL transform" ) ); |
Hanno Becker | d91dc37 | 2019-04-30 13:52:29 +0100 | [diff] [blame] | 1494 | |
Hanno Becker | 4932f9f | 2019-05-03 15:23:51 +0100 | [diff] [blame] | 1495 | transform->in_cid_len = ssl->own_cid_len; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 1496 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 1497 | memcpy( transform->in_cid, ssl->own_cid, ssl->own_cid_len ); |
Hanno Becker | 8013b27 | 2019-05-03 12:55:51 +0100 | [diff] [blame] | 1498 | MBEDTLS_SSL_DEBUG_BUF( 3, "Incoming CID", transform->in_cid, |
Hanno Becker | dd0afca | 2019-04-26 16:22:27 +0100 | [diff] [blame] | 1499 | transform->in_cid_len ); |
Hanno Becker | e582d12 | 2019-05-15 10:21:55 +0100 | [diff] [blame] | 1500 | |
| 1501 | transform->out_cid_len = ssl->handshake->peer_cid_len; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 1502 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 1503 | memcpy( transform->out_cid, ssl->handshake->peer_cid, |
Hanno Becker | e582d12 | 2019-05-15 10:21:55 +0100 | [diff] [blame] | 1504 | ssl->handshake->peer_cid_len ); |
| 1505 | MBEDTLS_SSL_DEBUG_BUF( 3, "Outgoing CID", transform->out_cid, |
| 1506 | transform->out_cid_len ); |
Hanno Becker | dd0afca | 2019-04-26 16:22:27 +0100 | [diff] [blame] | 1507 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 1508 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | dd0afca | 2019-04-26 16:22:27 +0100 | [diff] [blame] | 1509 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1510 | /* |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1511 | * Compute key block using the PRF |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 1512 | */ |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 1513 | ret = ssl_prf( minor_ver, |
| 1514 | mbedtls_ssl_suite_get_mac( ciphersuite_info ), |
| 1515 | master, 48, "key expansion", randbytes, 64, |
| 1516 | keyblk, 256 ); |
Manuel Pégourié-Gonnard | e960818 | 2015-03-26 11:47:47 +0100 | [diff] [blame] | 1517 | if( ret != 0 ) |
| 1518 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1519 | MBEDTLS_SSL_DEBUG_RET( 1, "prf", ret ); |
Manuel Pégourié-Gonnard | e960818 | 2015-03-26 11:47:47 +0100 | [diff] [blame] | 1520 | return( ret ); |
| 1521 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1522 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1523 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite = %s", |
Manuel Pégourié-Gonnard | 762d011 | 2019-05-20 10:27:20 +0200 | [diff] [blame] | 1524 | mbedtls_ssl_get_ciphersuite_name( ciphersuite ) ) ); |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1525 | MBEDTLS_SSL_DEBUG_BUF( 3, "master secret", master, 48 ); |
Manuel Pégourié-Gonnard | 0bcfbc3 | 2019-05-06 13:32:17 +0200 | [diff] [blame] | 1526 | MBEDTLS_SSL_DEBUG_BUF( 4, "random bytes", randbytes, 64 ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1527 | MBEDTLS_SSL_DEBUG_BUF( 4, "key block", keyblk, 256 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1528 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1529 | /* |
| 1530 | * Determine the appropriate key, IV and MAC length. |
| 1531 | */ |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1532 | |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1533 | keylen = cipher_info->key_bitlen / 8; |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1534 | |
Hanno Becker | f122944 | 2018-01-03 15:32:31 +0000 | [diff] [blame] | 1535 | #if defined(MBEDTLS_GCM_C) || \ |
| 1536 | defined(MBEDTLS_CCM_C) || \ |
| 1537 | defined(MBEDTLS_CHACHAPOLY_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1538 | if( cipher_info->mode == MBEDTLS_MODE_GCM || |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 1539 | cipher_info->mode == MBEDTLS_MODE_CCM || |
| 1540 | cipher_info->mode == MBEDTLS_MODE_CHACHAPOLY ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1541 | { |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1542 | transform->maclen = 0; |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1543 | mac_key_len = 0; |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 1544 | transform->taglen = mbedtls_ssl_suite_get_flags( ciphersuite_info ) & |
| 1545 | MBEDTLS_CIPHERSUITE_SHORT_TAG ? 8 : 16; |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1546 | |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 1547 | /* All modes haves 96-bit IVs; |
| 1548 | * GCM and CCM has 4 implicit and 8 explicit bytes |
| 1549 | * ChachaPoly has all 12 bytes implicit |
| 1550 | */ |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1551 | transform->ivlen = 12; |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 1552 | if( cipher_info->mode == MBEDTLS_MODE_CHACHAPOLY ) |
| 1553 | transform->fixed_ivlen = 12; |
| 1554 | else |
| 1555 | transform->fixed_ivlen = 4; |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1556 | } |
| 1557 | else |
Hanno Becker | f122944 | 2018-01-03 15:32:31 +0000 | [diff] [blame] | 1558 | #endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C || MBEDTLS_CHACHAPOLY_C */ |
| 1559 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
| 1560 | if( cipher_info->mode == MBEDTLS_MODE_STREAM || |
| 1561 | cipher_info->mode == MBEDTLS_MODE_CBC ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1562 | { |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1563 | /* Initialize HMAC contexts */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1564 | if( ( ret = mbedtls_md_setup( &transform->md_ctx_enc, md_info, 1 ) ) != 0 || |
| 1565 | ( ret = mbedtls_md_setup( &transform->md_ctx_dec, md_info, 1 ) ) != 0 ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1566 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1567 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_setup", ret ); |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1568 | return( ret ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1569 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1570 | |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1571 | /* Get MAC length */ |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1572 | mac_key_len = mbedtls_md_get_size( md_info ); |
| 1573 | transform->maclen = mac_key_len; |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1574 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1575 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1576 | /* |
| 1577 | * If HMAC is to be truncated, we shall keep the leftmost bytes, |
| 1578 | * (rfc 6066 page 13 or rfc 2104 section 4), |
| 1579 | * so we only need to adjust the length here. |
| 1580 | */ |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1581 | if( trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_ENABLED ) |
Hanno Becker | e89353a | 2017-11-20 16:36:41 +0000 | [diff] [blame] | 1582 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1583 | transform->maclen = MBEDTLS_SSL_TRUNCATED_HMAC_LEN; |
Hanno Becker | e89353a | 2017-11-20 16:36:41 +0000 | [diff] [blame] | 1584 | |
| 1585 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT) |
| 1586 | /* Fall back to old, non-compliant version of the truncated |
Hanno Becker | 563423f | 2017-11-21 17:20:17 +0000 | [diff] [blame] | 1587 | * HMAC implementation which also truncates the key |
| 1588 | * (Mbed TLS versions from 1.3 to 2.6.0) */ |
Hanno Becker | e89353a | 2017-11-20 16:36:41 +0000 | [diff] [blame] | 1589 | mac_key_len = transform->maclen; |
| 1590 | #endif |
| 1591 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1592 | #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */ |
Manuel Pégourié-Gonnard | e800cd8 | 2014-06-18 15:34:40 +0200 | [diff] [blame] | 1593 | |
| 1594 | /* IV length */ |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1595 | transform->ivlen = cipher_info->iv_size; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1596 | } |
Hanno Becker | f122944 | 2018-01-03 15:32:31 +0000 | [diff] [blame] | 1597 | else |
| 1598 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
| 1599 | { |
| 1600 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 1601 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 1602 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1603 | |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 1604 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "keylen: %u, ivlen: %u, maclen: %u", |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1605 | (unsigned) keylen, |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1606 | (unsigned) transform->ivlen, |
| 1607 | (unsigned) transform->maclen ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1608 | |
| 1609 | /* |
| 1610 | * Finally setup the cipher contexts, IVs and MAC secrets. |
| 1611 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1612 | #if defined(MBEDTLS_SSL_CLI_C) |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1613 | if( endpoint == MBEDTLS_SSL_IS_CLIENT ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1614 | { |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1615 | key1 = keyblk + mac_key_len * 2; |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1616 | key2 = keyblk + mac_key_len * 2 + keylen; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1617 | |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1618 | mac_enc = keyblk; |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1619 | mac_dec = keyblk + mac_key_len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1620 | |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 1621 | /* |
| 1622 | * This is not used in TLS v1.1. |
| 1623 | */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 1624 | iv_copy_len = ( transform->fixed_ivlen ) ? |
| 1625 | transform->fixed_ivlen : transform->ivlen; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 1626 | mbedtls_platform_memcpy( transform->iv_enc, key2 + keylen, iv_copy_len ); |
| 1627 | mbedtls_platform_memcpy( transform->iv_dec, key2 + keylen + iv_copy_len, |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 1628 | iv_copy_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1629 | } |
| 1630 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1631 | #endif /* MBEDTLS_SSL_CLI_C */ |
| 1632 | #if defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1633 | if( endpoint == MBEDTLS_SSL_IS_SERVER ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1634 | { |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1635 | key1 = keyblk + mac_key_len * 2 + keylen; |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1636 | key2 = keyblk + mac_key_len * 2; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1637 | |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1638 | mac_enc = keyblk + mac_key_len; |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1639 | mac_dec = keyblk; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1640 | |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 1641 | /* |
| 1642 | * This is not used in TLS v1.1. |
| 1643 | */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 1644 | iv_copy_len = ( transform->fixed_ivlen ) ? |
| 1645 | transform->fixed_ivlen : transform->ivlen; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 1646 | mbedtls_platform_memcpy( transform->iv_dec, key1 + keylen, iv_copy_len ); |
| 1647 | mbedtls_platform_memcpy( transform->iv_enc, key1 + keylen + iv_copy_len, |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 1648 | iv_copy_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1649 | } |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 1650 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1651 | #endif /* MBEDTLS_SSL_SRV_C */ |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 1652 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1653 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 1654 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 1655 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1656 | |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 1657 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1658 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Manuel Pégourié-Gonnard | 1d10a98 | 2019-05-06 13:48:22 +0200 | [diff] [blame] | 1659 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1660 | { |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 1661 | if( mac_key_len > sizeof( transform->mac_enc ) ) |
Manuel Pégourié-Gonnard | 7cfdcb8 | 2014-01-18 18:22:55 +0100 | [diff] [blame] | 1662 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1663 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 1664 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 7cfdcb8 | 2014-01-18 18:22:55 +0100 | [diff] [blame] | 1665 | } |
| 1666 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 1667 | mbedtls_platform_memcpy( transform->mac_enc, mac_enc, mac_key_len ); |
| 1668 | mbedtls_platform_memcpy( transform->mac_dec, mac_dec, mac_key_len ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1669 | } |
| 1670 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1671 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 1672 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 1673 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 1674 | if( mbedtls_ssl_ver_geq( minor_ver, MBEDTLS_SSL_MINOR_VERSION_1 ) ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1675 | { |
Gilles Peskine | 039fd12 | 2018-03-19 19:06:08 +0100 | [diff] [blame] | 1676 | /* For HMAC-based ciphersuites, initialize the HMAC transforms. |
| 1677 | For AEAD-based ciphersuites, there is nothing to do here. */ |
| 1678 | if( mac_key_len != 0 ) |
| 1679 | { |
| 1680 | mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, mac_key_len ); |
| 1681 | mbedtls_md_hmac_starts( &transform->md_ctx_dec, mac_dec, mac_key_len ); |
| 1682 | } |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1683 | } |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 1684 | else |
| 1685 | #endif |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 1686 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1687 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 1688 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 1689 | } |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 1690 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1691 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1692 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 1693 | if( mbedtls_ssl_hw_record_init != NULL ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 1694 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1695 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_init()" ) ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 1696 | |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1697 | if( ( ret = mbedtls_ssl_hw_record_init( ssl, key1, key2, keylen, |
Paul Bakker | 07eb38b | 2012-12-19 14:42:06 +0100 | [diff] [blame] | 1698 | transform->iv_enc, transform->iv_dec, |
| 1699 | iv_copy_len, |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 1700 | mac_enc, mac_dec, |
Hanno Becker | 81c7b18 | 2017-11-09 18:39:33 +0000 | [diff] [blame] | 1701 | mac_key_len ) ) != 0 ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 1702 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1703 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_init", ret ); |
| 1704 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 1705 | } |
| 1706 | } |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 1707 | #else |
| 1708 | ((void) mac_dec); |
| 1709 | ((void) mac_enc); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1710 | #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 1711 | |
Manuel Pégourié-Gonnard | 024b6df | 2015-10-19 13:52:53 +0200 | [diff] [blame] | 1712 | #if defined(MBEDTLS_SSL_EXPORT_KEYS) |
| 1713 | if( ssl->conf->f_export_keys != NULL ) |
Robert Cragie | 4feb7ae | 2015-10-02 13:33:37 +0100 | [diff] [blame] | 1714 | { |
Manuel Pégourié-Gonnard | 024b6df | 2015-10-19 13:52:53 +0200 | [diff] [blame] | 1715 | ssl->conf->f_export_keys( ssl->conf->p_export_keys, |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1716 | master, keyblk, |
Hanno Becker | e7f2df0 | 2017-12-27 08:17:40 +0000 | [diff] [blame] | 1717 | mac_key_len, keylen, |
Robert Cragie | 4feb7ae | 2015-10-02 13:33:37 +0100 | [diff] [blame] | 1718 | iv_copy_len ); |
| 1719 | } |
| 1720 | #endif |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 1721 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 1722 | if( ( ret = mbedtls_cipher_setup( &transform->cipher_ctx, |
| 1723 | cipher_info ) ) != 0 ) |
| 1724 | { |
| 1725 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setup", ret ); |
| 1726 | return( ret ); |
| 1727 | } |
| 1728 | transform->key_enc = mbedtls_calloc( 1, cipher_info->key_bitlen >> 3 ); |
| 1729 | transform->key_dec = mbedtls_calloc( 1, cipher_info->key_bitlen >> 3 ); |
Robert Cragie | 4feb7ae | 2015-10-02 13:33:37 +0100 | [diff] [blame] | 1730 | |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 1731 | memcpy( transform->key_enc, key1, cipher_info->key_bitlen >> 3 ); |
| 1732 | memcpy( transform->key_dec, key2, cipher_info->key_bitlen >> 3 ); |
| 1733 | |
| 1734 | transform->key_bitlen = cipher_info->key_bitlen; |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 1735 | #if defined(MBEDTLS_VALIDATE_SSL_KEYS_INTEGRITY) |
| 1736 | transform->key_enc_hash = mbedtls_hash( transform->key_enc, transform->key_bitlen >> 3 ); |
| 1737 | transform->key_dec_hash = mbedtls_hash( transform->key_dec, transform->key_bitlen >> 3 ); |
| 1738 | #endif |
| 1739 | |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 1740 | #else |
Manuel Pégourié-Gonnard | 8473f87 | 2015-05-14 13:51:45 +0200 | [diff] [blame] | 1741 | if( ( ret = mbedtls_cipher_setup( &transform->cipher_ctx_enc, |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1742 | cipher_info ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1743 | { |
Manuel Pégourié-Gonnard | 8473f87 | 2015-05-14 13:51:45 +0200 | [diff] [blame] | 1744 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setup", ret ); |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1745 | return( ret ); |
| 1746 | } |
Paul Bakker | da02a7f | 2013-08-31 17:25:14 +0200 | [diff] [blame] | 1747 | |
Manuel Pégourié-Gonnard | 8473f87 | 2015-05-14 13:51:45 +0200 | [diff] [blame] | 1748 | if( ( ret = mbedtls_cipher_setup( &transform->cipher_ctx_dec, |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1749 | cipher_info ) ) != 0 ) |
| 1750 | { |
Manuel Pégourié-Gonnard | 8473f87 | 2015-05-14 13:51:45 +0200 | [diff] [blame] | 1751 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setup", ret ); |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1752 | return( ret ); |
| 1753 | } |
Paul Bakker | da02a7f | 2013-08-31 17:25:14 +0200 | [diff] [blame] | 1754 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1755 | if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx_enc, key1, |
Manuel Pégourié-Gonnard | 898e0aa | 2015-06-18 15:28:12 +0200 | [diff] [blame] | 1756 | cipher_info->key_bitlen, |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1757 | MBEDTLS_ENCRYPT ) ) != 0 ) |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1758 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1759 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setkey", ret ); |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1760 | return( ret ); |
| 1761 | } |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 1762 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1763 | if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx_dec, key2, |
Manuel Pégourié-Gonnard | 898e0aa | 2015-06-18 15:28:12 +0200 | [diff] [blame] | 1764 | cipher_info->key_bitlen, |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1765 | MBEDTLS_DECRYPT ) ) != 0 ) |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1766 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1767 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setkey", ret ); |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1768 | return( ret ); |
| 1769 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 1770 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1771 | #if defined(MBEDTLS_CIPHER_MODE_CBC) |
| 1772 | if( cipher_info->mode == MBEDTLS_MODE_CBC ) |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1773 | { |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 1774 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 1775 | if( ( ret = mbedtls_cipher_set_padding_mode( &transform->cipher_ctx, |
| 1776 | MBEDTLS_PADDING_NONE ) ) != 0 ) |
| 1777 | { |
| 1778 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_set_padding_mode", ret ); |
| 1779 | return( ret ); |
| 1780 | } |
| 1781 | #else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1782 | if( ( ret = mbedtls_cipher_set_padding_mode( &transform->cipher_ctx_enc, |
| 1783 | MBEDTLS_PADDING_NONE ) ) != 0 ) |
Manuel Pégourié-Gonnard | 126a66f | 2013-10-25 18:33:32 +0200 | [diff] [blame] | 1784 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1785 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_set_padding_mode", ret ); |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1786 | return( ret ); |
Manuel Pégourié-Gonnard | 126a66f | 2013-10-25 18:33:32 +0200 | [diff] [blame] | 1787 | } |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1788 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1789 | if( ( ret = mbedtls_cipher_set_padding_mode( &transform->cipher_ctx_dec, |
| 1790 | MBEDTLS_PADDING_NONE ) ) != 0 ) |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1791 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1792 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_set_padding_mode", ret ); |
Manuel Pégourié-Gonnard | 8866591 | 2013-10-25 18:42:44 +0200 | [diff] [blame] | 1793 | return( ret ); |
| 1794 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 1795 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1796 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1797 | #endif /* MBEDTLS_CIPHER_MODE_CBC */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1798 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 1799 | mbedtls_platform_zeroize( keyblk, sizeof( keyblk ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1800 | |
Manuel Pégourié-Gonnard | a1abb26 | 2019-05-06 12:44:24 +0200 | [diff] [blame] | 1801 | /* Initialize Zlib contexts */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1802 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 1803 | if( compression == MBEDTLS_SSL_COMPRESS_DEFLATE ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 1804 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1805 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Initializing zlib states" ) ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 1806 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 1807 | mbedtls_platform_memset( &transform->ctx_deflate, 0, sizeof( transform->ctx_deflate ) ); |
| 1808 | mbedtls_platform_memset( &transform->ctx_inflate, 0, sizeof( transform->ctx_inflate ) ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 1809 | |
Paul Bakker | b9e4e2c | 2014-05-01 14:18:25 +0200 | [diff] [blame] | 1810 | if( deflateInit( &transform->ctx_deflate, |
| 1811 | Z_DEFAULT_COMPRESSION ) != Z_OK || |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 1812 | inflateInit( &transform->ctx_inflate ) != Z_OK ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 1813 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1814 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Failed to initialize compression" ) ); |
| 1815 | return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 1816 | } |
| 1817 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 1818 | #endif /* MBEDTLS_ZLIB_SUPPORT */ |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 1819 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1820 | return( 0 ); |
| 1821 | } |
| 1822 | |
Hanno Becker | cf87c5e | 2019-08-16 10:11:21 +0100 | [diff] [blame] | 1823 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
| 1824 | static inline void ssl_calc_verify_ssl( const mbedtls_ssl_context *ssl, |
| 1825 | unsigned char hash[36], |
| 1826 | size_t *hlen ) |
| 1827 | { |
| 1828 | mbedtls_md5_context md5; |
| 1829 | mbedtls_sha1_context sha1; |
| 1830 | unsigned char pad_1[48]; |
| 1831 | unsigned char pad_2[48]; |
| 1832 | |
| 1833 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify ssl" ) ); |
| 1834 | |
| 1835 | mbedtls_md5_init( &md5 ); |
| 1836 | mbedtls_sha1_init( &sha1 ); |
| 1837 | |
| 1838 | mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 ); |
| 1839 | mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 ); |
| 1840 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 1841 | mbedtls_platform_memset( pad_1, 0x36, 48 ); |
| 1842 | mbedtls_platform_memset( pad_2, 0x5C, 48 ); |
Hanno Becker | cf87c5e | 2019-08-16 10:11:21 +0100 | [diff] [blame] | 1843 | |
| 1844 | mbedtls_md5_update_ret( &md5, ssl->session_negotiate->master, 48 ); |
| 1845 | mbedtls_md5_update_ret( &md5, pad_1, 48 ); |
| 1846 | mbedtls_md5_finish_ret( &md5, hash ); |
| 1847 | |
| 1848 | mbedtls_md5_starts_ret( &md5 ); |
| 1849 | mbedtls_md5_update_ret( &md5, ssl->session_negotiate->master, 48 ); |
| 1850 | mbedtls_md5_update_ret( &md5, pad_2, 48 ); |
| 1851 | mbedtls_md5_update_ret( &md5, hash, 16 ); |
| 1852 | mbedtls_md5_finish_ret( &md5, hash ); |
| 1853 | |
| 1854 | mbedtls_sha1_update_ret( &sha1, ssl->session_negotiate->master, 48 ); |
| 1855 | mbedtls_sha1_update_ret( &sha1, pad_1, 40 ); |
| 1856 | mbedtls_sha1_finish_ret( &sha1, hash + 16 ); |
| 1857 | |
| 1858 | mbedtls_sha1_starts_ret( &sha1 ); |
| 1859 | mbedtls_sha1_update_ret( &sha1, ssl->session_negotiate->master, 48 ); |
| 1860 | mbedtls_sha1_update_ret( &sha1, pad_2, 40 ); |
| 1861 | mbedtls_sha1_update_ret( &sha1, hash + 16, 20 ); |
| 1862 | mbedtls_sha1_finish_ret( &sha1, hash + 16 ); |
| 1863 | |
| 1864 | *hlen = 36; |
| 1865 | |
| 1866 | MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, *hlen ); |
| 1867 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) ); |
| 1868 | |
| 1869 | mbedtls_md5_free( &md5 ); |
| 1870 | mbedtls_sha1_free( &sha1 ); |
| 1871 | |
| 1872 | return; |
| 1873 | } |
| 1874 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 1875 | |
| 1876 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) |
| 1877 | static inline void ssl_calc_verify_tls( const mbedtls_ssl_context *ssl, |
| 1878 | unsigned char hash[36], |
| 1879 | size_t *hlen ) |
| 1880 | { |
| 1881 | mbedtls_md5_context md5; |
| 1882 | mbedtls_sha1_context sha1; |
| 1883 | |
| 1884 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify tls" ) ); |
| 1885 | |
| 1886 | mbedtls_md5_init( &md5 ); |
| 1887 | mbedtls_sha1_init( &sha1 ); |
| 1888 | |
| 1889 | mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 ); |
| 1890 | mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 ); |
| 1891 | |
| 1892 | mbedtls_md5_finish_ret( &md5, hash ); |
| 1893 | mbedtls_sha1_finish_ret( &sha1, hash + 16 ); |
| 1894 | |
| 1895 | *hlen = 36; |
| 1896 | |
| 1897 | MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, *hlen ); |
| 1898 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) ); |
| 1899 | |
| 1900 | mbedtls_md5_free( &md5 ); |
| 1901 | mbedtls_sha1_free( &sha1 ); |
| 1902 | |
| 1903 | return; |
| 1904 | } |
| 1905 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 */ |
| 1906 | |
| 1907 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 1908 | #if defined(MBEDTLS_SHA256_C) |
| 1909 | static inline void ssl_calc_verify_tls_sha256( const mbedtls_ssl_context *ssl, |
| 1910 | unsigned char hash[32], |
| 1911 | size_t *hlen ) |
| 1912 | { |
| 1913 | mbedtls_sha256_context sha256; |
| 1914 | |
| 1915 | mbedtls_sha256_init( &sha256 ); |
| 1916 | |
| 1917 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify sha256" ) ); |
| 1918 | |
| 1919 | mbedtls_sha256_clone( &sha256, &ssl->handshake->fin_sha256 ); |
| 1920 | mbedtls_sha256_finish_ret( &sha256, hash ); |
| 1921 | |
| 1922 | *hlen = 32; |
| 1923 | |
| 1924 | MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, *hlen ); |
| 1925 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) ); |
| 1926 | |
| 1927 | mbedtls_sha256_free( &sha256 ); |
| 1928 | |
| 1929 | return; |
| 1930 | } |
| 1931 | #endif /* MBEDTLS_SHA256_C */ |
| 1932 | |
| 1933 | #if defined(MBEDTLS_SHA512_C) |
| 1934 | static inline void ssl_calc_verify_tls_sha384( const mbedtls_ssl_context *ssl, |
| 1935 | unsigned char hash[48], |
| 1936 | size_t *hlen ) |
| 1937 | { |
| 1938 | mbedtls_sha512_context sha512; |
| 1939 | |
| 1940 | mbedtls_sha512_init( &sha512 ); |
| 1941 | |
| 1942 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify sha384" ) ); |
| 1943 | |
| 1944 | mbedtls_sha512_clone( &sha512, &ssl->handshake->fin_sha512 ); |
| 1945 | mbedtls_sha512_finish_ret( &sha512, hash ); |
| 1946 | |
| 1947 | *hlen = 48; |
| 1948 | |
| 1949 | MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, *hlen ); |
| 1950 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) ); |
| 1951 | |
| 1952 | mbedtls_sha512_free( &sha512 ); |
| 1953 | |
| 1954 | return; |
| 1955 | } |
| 1956 | #endif /* MBEDTLS_SHA512_C */ |
| 1957 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 1958 | |
Hanno Becker | 2f41b24 | 2019-08-15 17:29:43 +0100 | [diff] [blame] | 1959 | int mbedtls_ssl_calc_verify( int minor_ver, |
| 1960 | mbedtls_md_type_t hash, |
| 1961 | mbedtls_ssl_context const *ssl, |
| 1962 | unsigned char *dst, |
| 1963 | size_t *hlen ) |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1964 | { |
Manuel Pégourié-Gonnard | aa3c701 | 2019-04-30 12:08:59 +0200 | [diff] [blame] | 1965 | #if !defined(MBEDTLS_SSL_PROTO_TLS1_2) || !defined(MBEDTLS_SHA512_C) |
| 1966 | (void) hash; |
| 1967 | #endif |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1968 | |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1969 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Manuel Pégourié-Gonnard | aa3c701 | 2019-04-30 12:08:59 +0200 | [diff] [blame] | 1970 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ) |
Hanno Becker | 2f41b24 | 2019-08-15 17:29:43 +0100 | [diff] [blame] | 1971 | ssl_calc_verify_ssl( ssl, dst, hlen ); |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1972 | else |
| 1973 | #endif |
| 1974 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 1975 | if( mbedtls_ssl_ver_lt( minor_ver, MBEDTLS_SSL_MINOR_VERSION_3 ) ) |
Hanno Becker | 2f41b24 | 2019-08-15 17:29:43 +0100 | [diff] [blame] | 1976 | ssl_calc_verify_tls( ssl, dst, hlen ); |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1977 | else |
| 1978 | #endif |
| 1979 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 1980 | #if defined(MBEDTLS_SHA512_C) |
Manuel Pégourié-Gonnard | aa3c701 | 2019-04-30 12:08:59 +0200 | [diff] [blame] | 1981 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 && |
| 1982 | hash == MBEDTLS_MD_SHA384 ) |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1983 | { |
Hanno Becker | 2f41b24 | 2019-08-15 17:29:43 +0100 | [diff] [blame] | 1984 | ssl_calc_verify_tls_sha384( ssl, dst, hlen ); |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1985 | } |
| 1986 | else |
| 1987 | #endif |
| 1988 | #if defined(MBEDTLS_SHA256_C) |
Manuel Pégourié-Gonnard | aa3c701 | 2019-04-30 12:08:59 +0200 | [diff] [blame] | 1989 | if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 ) |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1990 | { |
Hanno Becker | 2f41b24 | 2019-08-15 17:29:43 +0100 | [diff] [blame] | 1991 | ssl_calc_verify_tls_sha256( ssl, dst, hlen ); |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1992 | } |
| 1993 | else |
| 1994 | #endif |
| 1995 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 1996 | { |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 1997 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 1998 | } |
| 1999 | |
| 2000 | return( 0 ); |
| 2001 | } |
| 2002 | |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2003 | /* |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2004 | * Compute master secret if needed |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2005 | * |
| 2006 | * Parameters: |
| 2007 | * [in/out] handshake |
| 2008 | * [in] resume, premaster, extended_ms, calc_verify, tls_prf |
| 2009 | * [out] premaster (cleared) |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2010 | * [out] master |
| 2011 | * [in] ssl: optionally used for debugging and calc_verify |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2012 | */ |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2013 | static int ssl_compute_master( mbedtls_ssl_handshake_params *handshake, |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2014 | unsigned char *master, |
Manuel Pégourié-Gonnard | ed3b7a9 | 2019-05-03 09:58:33 +0200 | [diff] [blame] | 2015 | const mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2016 | { |
| 2017 | int ret; |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2018 | |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 2019 | /* #if !defined(MBEDTLS_DEBUG_C) && !defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) */ |
| 2020 | /* ssl = NULL; /\* make sure we don't use it except for debug and EMS *\/ */ |
| 2021 | /* (void) ssl; */ |
| 2022 | /* #endif */ |
| 2023 | |
| 2024 | mbedtls_ssl_ciphersuite_handle_t const ciphersuite = |
| 2025 | mbedtls_ssl_handshake_get_ciphersuite( handshake ); |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2026 | |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 2027 | #if !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION) |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 2028 | if( handshake->resume == MBEDTLS_SSL_FI_FLAG_SET ) |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2029 | { |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2030 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "no premaster (session resumed)" ) ); |
| 2031 | return( 0 ); |
| 2032 | } |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 2033 | #endif /* !MBEDTLS_SSL_NO_SESSION_RESUMPTION */ |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2034 | |
| 2035 | MBEDTLS_SSL_DEBUG_BUF( 3, "premaster secret", handshake->premaster, |
| 2036 | handshake->pmslen ); |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2037 | |
| 2038 | #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) |
Hanno Becker | a49ec56 | 2019-06-11 14:47:55 +0100 | [diff] [blame] | 2039 | if( mbedtls_ssl_hs_get_extended_ms( handshake ) |
| 2040 | == MBEDTLS_SSL_EXTENDED_MS_ENABLED ) |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2041 | { |
| 2042 | unsigned char session_hash[48]; |
| 2043 | size_t hash_len; |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2044 | |
Hanno Becker | 2f41b24 | 2019-08-15 17:29:43 +0100 | [diff] [blame] | 2045 | mbedtls_ssl_calc_verify( |
| 2046 | mbedtls_ssl_get_minor_ver( ssl ), |
| 2047 | mbedtls_ssl_suite_get_mac( ciphersuite ), |
| 2048 | ssl, session_hash, &hash_len ); |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2049 | |
Manuel Pégourié-Gonnard | 9c5bcc9 | 2019-05-20 12:09:50 +0200 | [diff] [blame] | 2050 | MBEDTLS_SSL_DEBUG_BUF( 3, "session hash for extended master secret", |
| 2051 | session_hash, hash_len ); |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2052 | |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 2053 | ret = ssl_prf( mbedtls_ssl_get_minor_ver( ssl ), |
| 2054 | mbedtls_ssl_suite_get_mac( ciphersuite ), |
| 2055 | handshake->premaster, handshake->pmslen, |
| 2056 | "extended master secret", |
| 2057 | session_hash, hash_len, |
| 2058 | master, 48 ); |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2059 | } |
| 2060 | else |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2061 | #endif |
Manuel Pégourié-Gonnard | bcf258e | 2019-05-03 11:46:27 +0200 | [diff] [blame] | 2062 | { |
Hanno Becker | 39c7f7e | 2019-08-15 16:17:34 +0100 | [diff] [blame] | 2063 | ret = ssl_prf( mbedtls_ssl_get_minor_ver( ssl ), |
| 2064 | mbedtls_ssl_suite_get_mac( ciphersuite ), |
| 2065 | handshake->premaster, handshake->pmslen, |
| 2066 | "master secret", |
| 2067 | handshake->randbytes, 64, |
| 2068 | master, 48 ); |
Manuel Pégourié-Gonnard | bcf258e | 2019-05-03 11:46:27 +0200 | [diff] [blame] | 2069 | } |
Manuel Pégourié-Gonnard | dafe522 | 2019-05-03 09:16:16 +0200 | [diff] [blame] | 2070 | if( ret != 0 ) |
| 2071 | { |
| 2072 | MBEDTLS_SSL_DEBUG_RET( 1, "prf", ret ); |
| 2073 | return( ret ); |
| 2074 | } |
| 2075 | |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 2076 | if( handshake->premaster == mbedtls_platform_zeroize( |
Piotr Nowicki | a6348ed | 2020-06-29 15:03:56 +0200 | [diff] [blame] | 2077 | handshake->premaster, sizeof(handshake->premaster) ) ) |
| 2078 | { |
| 2079 | return( 0 ); |
| 2080 | } |
| 2081 | |
| 2082 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2083 | } |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 2084 | |
Manuel Pégourié-Gonnard | 5ed5e90 | 2019-04-30 11:41:40 +0200 | [diff] [blame] | 2085 | int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) |
| 2086 | { |
Andrzej Kurek | fd56f40 | 2020-05-25 11:52:05 -0400 | [diff] [blame] | 2087 | volatile int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Manuel Pégourié-Gonnard | 52aa520 | 2019-04-30 11:54:22 +0200 | [diff] [blame] | 2088 | |
Manuel Pégourié-Gonnard | 707728d | 2019-05-06 12:05:58 +0200 | [diff] [blame] | 2089 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> derive keys" ) ); |
Jarno Lamsa | 4031a45 | 2019-12-19 08:11:12 +0200 | [diff] [blame] | 2090 | ssl->handshake->key_derivation_done = MBEDTLS_SSL_FI_FLAG_UNSET; |
Manuel Pégourié-Gonnard | 707728d | 2019-05-06 12:05:58 +0200 | [diff] [blame] | 2091 | /* Compute master secret if needed */ |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2092 | ret = ssl_compute_master( ssl->handshake, |
Manuel Pégourié-Gonnard | c28c889 | 2019-05-03 09:46:14 +0200 | [diff] [blame] | 2093 | ssl->session_negotiate->master, |
| 2094 | ssl ); |
Manuel Pégourié-Gonnard | 7edd587 | 2019-05-03 09:05:41 +0200 | [diff] [blame] | 2095 | if( ret != 0 ) |
| 2096 | { |
| 2097 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_compute_master", ret ); |
| 2098 | return( ret ); |
| 2099 | } |
| 2100 | |
Manuel Pégourié-Gonnard | 707728d | 2019-05-06 12:05:58 +0200 | [diff] [blame] | 2101 | /* Swap the client and server random values: |
| 2102 | * - MS derivation wanted client+server (RFC 5246 8.1) |
| 2103 | * - key derivation wants server+client (RFC 5246 6.3) */ |
| 2104 | { |
| 2105 | unsigned char tmp[64]; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2106 | mbedtls_platform_memcpy( tmp, ssl->handshake->randbytes, 64 ); |
| 2107 | mbedtls_platform_memcpy( ssl->handshake->randbytes, tmp + 32, 32 ); |
| 2108 | mbedtls_platform_memcpy( ssl->handshake->randbytes + 32, tmp, 32 ); |
Manuel Pégourié-Gonnard | 707728d | 2019-05-06 12:05:58 +0200 | [diff] [blame] | 2109 | mbedtls_platform_zeroize( tmp, sizeof( tmp ) ); |
| 2110 | } |
| 2111 | |
| 2112 | /* Populate transform structure */ |
Manuel Pégourié-Gonnard | 12a3f44 | 2019-05-06 12:55:40 +0200 | [diff] [blame] | 2113 | ret = ssl_populate_transform( ssl->transform_negotiate, |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 2114 | mbedtls_ssl_session_get_ciphersuite( ssl->session_negotiate ), |
| 2115 | ssl->session_negotiate->master, |
Jaeden Amero | 2eaf2c7 | 2019-06-05 13:32:08 +0100 | [diff] [blame] | 2116 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 2117 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 2118 | ssl->session_negotiate->encrypt_then_mac, |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 2119 | #endif |
| 2120 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 2121 | ssl->session_negotiate->trunc_hmac, |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 2122 | #endif |
Jaeden Amero | 2eaf2c7 | 2019-06-05 13:32:08 +0100 | [diff] [blame] | 2123 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 2124 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 2125 | ssl->session_negotiate->compression, |
Manuel Pégourié-Gonnard | 84ef8bd | 2019-05-10 10:50:04 +0200 | [diff] [blame] | 2126 | #endif |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 2127 | ssl->handshake->randbytes, |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 2128 | mbedtls_ssl_get_minor_ver( ssl ), |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 2129 | mbedtls_ssl_conf_get_endpoint( ssl->conf ), |
| 2130 | ssl ); |
Jarno Lamsa | 4031a45 | 2019-12-19 08:11:12 +0200 | [diff] [blame] | 2131 | if( ret == 0 ) |
| 2132 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 2133 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 4031a45 | 2019-12-19 08:11:12 +0200 | [diff] [blame] | 2134 | if( ret == 0 ) |
| 2135 | { |
| 2136 | ssl->handshake->key_derivation_done = MBEDTLS_SSL_FI_FLAG_SET; |
| 2137 | } |
| 2138 | else |
| 2139 | { |
| 2140 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 2141 | } |
| 2142 | } |
| 2143 | else |
Manuel Pégourié-Gonnard | 707728d | 2019-05-06 12:05:58 +0200 | [diff] [blame] | 2144 | { |
| 2145 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_populate_transform", ret ); |
| 2146 | return( ret ); |
| 2147 | } |
| 2148 | |
| 2149 | /* We no longer need Server/ClientHello.random values */ |
| 2150 | mbedtls_platform_zeroize( ssl->handshake->randbytes, |
| 2151 | sizeof( ssl->handshake->randbytes ) ); |
| 2152 | |
Manuel Pégourié-Gonnard | a1abb26 | 2019-05-06 12:44:24 +0200 | [diff] [blame] | 2153 | /* Allocate compression buffer */ |
| 2154 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
jiblime | 92af9a9 | 2019-12-18 21:40:01 -0800 | [diff] [blame] | 2155 | if( ssl->session_negotiate->compression == MBEDTLS_SSL_COMPRESS_DEFLATE && |
Manuel Pégourié-Gonnard | a1abb26 | 2019-05-06 12:44:24 +0200 | [diff] [blame] | 2156 | ssl->compress_buf == NULL ) |
| 2157 | { |
| 2158 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Allocating compression buffer" ) ); |
| 2159 | ssl->compress_buf = mbedtls_calloc( 1, MBEDTLS_SSL_COMPRESS_BUFFER_LEN ); |
| 2160 | if( ssl->compress_buf == NULL ) |
| 2161 | { |
| 2162 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", |
Manuel Pégourié-Gonnard | 762d011 | 2019-05-20 10:27:20 +0200 | [diff] [blame] | 2163 | MBEDTLS_SSL_COMPRESS_BUFFER_LEN ) ); |
Manuel Pégourié-Gonnard | a1abb26 | 2019-05-06 12:44:24 +0200 | [diff] [blame] | 2164 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
| 2165 | } |
| 2166 | } |
| 2167 | #endif |
| 2168 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2169 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= derive keys" ) ); |
| 2170 | |
| 2171 | return( 0 ); |
| 2172 | } |
| 2173 | |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2174 | int mbedtls_ssl_build_pms( mbedtls_ssl_context *ssl ) |
| 2175 | { |
Andrzej Kurek | fd56f40 | 2020-05-25 11:52:05 -0400 | [diff] [blame] | 2176 | volatile int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2177 | |
| 2178 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info = |
| 2179 | mbedtls_ssl_handshake_get_ciphersuite( ssl->handshake ); |
Hanno Becker | a3c2c17 | 2019-07-23 16:51:57 +0100 | [diff] [blame] | 2180 | #if defined(MBEDTLS_USE_TINYCRYPT) |
| 2181 | if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
Hanno Becker | ecf5d3f | 2019-09-01 07:47:29 +0100 | [diff] [blame] | 2182 | == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA || |
Hanno Becker | a3c2c17 | 2019-07-23 16:51:57 +0100 | [diff] [blame] | 2183 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
Hanno Becker | ecf5d3f | 2019-09-01 07:47:29 +0100 | [diff] [blame] | 2184 | == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA || |
| 2185 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2186 | == MBEDTLS_KEY_EXCHANGE_ECDH_RSA || |
| 2187 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2188 | == MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA ) |
Hanno Becker | a3c2c17 | 2019-07-23 16:51:57 +0100 | [diff] [blame] | 2189 | { |
Manuel Pégourié-Gonnard | 9d6a535 | 2019-11-25 13:06:05 +0100 | [diff] [blame] | 2190 | ret = uECC_shared_secret( ssl->handshake->ecdh_peerkey, |
| 2191 | ssl->handshake->ecdh_privkey, |
| 2192 | ssl->handshake->premaster ); |
| 2193 | if( ret == UECC_FAULT_DETECTED ) |
| 2194 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 2195 | if( ret != UECC_SUCCESS ) |
Hanno Becker | a3c2c17 | 2019-07-23 16:51:57 +0100 | [diff] [blame] | 2196 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2197 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
Hanno Becker | a3c2c17 | 2019-07-23 16:51:57 +0100 | [diff] [blame] | 2198 | |
| 2199 | ssl->handshake->pmslen = NUM_ECC_BYTES; |
| 2200 | } |
| 2201 | else |
| 2202 | #endif |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2203 | #if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED) |
| 2204 | if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2205 | == MBEDTLS_KEY_EXCHANGE_DHE_RSA ) |
| 2206 | { |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2207 | ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx, |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2208 | ssl->handshake->premaster, |
| 2209 | MBEDTLS_PREMASTER_SIZE, |
| 2210 | &ssl->handshake->pmslen, |
| 2211 | mbedtls_ssl_conf_get_frng( ssl->conf ), |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2212 | mbedtls_ssl_conf_get_prng( ssl->conf ) ); |
| 2213 | if( ret == 0 ) |
| 2214 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 2215 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2216 | if( ret == 0 ) |
| 2217 | { |
| 2218 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
| 2219 | } |
| 2220 | else |
| 2221 | { |
Piotr Nowicki | e048b91 | 2020-06-05 17:59:28 +0200 | [diff] [blame] | 2222 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", |
| 2223 | MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 2224 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2225 | } |
| 2226 | } |
| 2227 | else |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2228 | { |
| 2229 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret ); |
| 2230 | return( ret ); |
| 2231 | } |
| 2232 | |
| 2233 | MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K ); |
| 2234 | } |
| 2235 | else |
| 2236 | #endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */ |
Hanno Becker | 29d1655 | 2019-07-24 11:11:45 +0100 | [diff] [blame] | 2237 | #if defined(MBEDTLS_ECDH_C) && \ |
| 2238 | ( defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \ |
| 2239 | defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) || \ |
| 2240 | defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \ |
| 2241 | defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED) ) |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2242 | if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2243 | == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA || |
| 2244 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2245 | == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA || |
| 2246 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2247 | == MBEDTLS_KEY_EXCHANGE_ECDH_RSA || |
| 2248 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2249 | == MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA ) |
| 2250 | { |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2251 | ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx, |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2252 | &ssl->handshake->pmslen, |
| 2253 | ssl->handshake->premaster, |
| 2254 | MBEDTLS_MPI_MAX_SIZE, |
| 2255 | mbedtls_ssl_conf_get_frng( ssl->conf ), |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2256 | mbedtls_ssl_conf_get_prng( ssl->conf ) ); |
| 2257 | if( ret == 0 ) |
| 2258 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 2259 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2260 | if( ret == 0 ) |
| 2261 | { |
| 2262 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
| 2263 | } |
| 2264 | else |
| 2265 | { |
| 2266 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret ); |
Jarno Lamsa | 5aa4c07 | 2019-12-20 12:42:49 +0200 | [diff] [blame] | 2267 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2268 | } |
| 2269 | } |
| 2270 | else |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2271 | { |
| 2272 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret ); |
| 2273 | return( ret ); |
| 2274 | } |
| 2275 | |
| 2276 | MBEDTLS_SSL_DEBUG_MPI( 3, "ECDH: z", &ssl->handshake->ecdh_ctx.z ); |
| 2277 | } |
| 2278 | else |
| 2279 | #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED || |
| 2280 | MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED || |
| 2281 | MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED || |
| 2282 | MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */ |
| 2283 | #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) |
| 2284 | if( mbedtls_ssl_ciphersuite_uses_psk( ciphersuite_info ) ) |
| 2285 | { |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2286 | ret = mbedtls_ssl_psk_derive_premaster( ssl, |
| 2287 | mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) ); |
| 2288 | if( ret == 0 ) |
| 2289 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 2290 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2291 | if( ret == 0 ) |
| 2292 | { |
| 2293 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
| 2294 | } |
| 2295 | else |
| 2296 | { |
| 2297 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret ); |
Jarno Lamsa | 5aa4c07 | 2019-12-20 12:42:49 +0200 | [diff] [blame] | 2298 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2299 | } |
| 2300 | } |
| 2301 | else |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2302 | { |
| 2303 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret ); |
| 2304 | return( ret ); |
| 2305 | } |
| 2306 | } |
| 2307 | else |
| 2308 | #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */ |
| 2309 | #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) |
| 2310 | if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) == |
| 2311 | MBEDTLS_KEY_EXCHANGE_ECJPAKE ) |
| 2312 | { |
| 2313 | ret = mbedtls_ecjpake_derive_secret( &ssl->handshake->ecjpake_ctx, |
| 2314 | ssl->handshake->premaster, 32, &ssl->handshake->pmslen, |
| 2315 | mbedtls_ssl_conf_get_frng( ssl->conf ), |
Hanno Becker | 9a12243 | 2019-07-23 13:24:02 +0100 | [diff] [blame] | 2316 | mbedtls_ssl_conf_get_prng( ssl->conf ) ); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2317 | if( ret == 0 ) |
| 2318 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 2319 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2320 | if( ret == 0 ) |
| 2321 | { |
| 2322 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
| 2323 | } |
| 2324 | else |
| 2325 | { |
| 2326 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecjpake_derive_secret", ret ); |
Jarno Lamsa | 5aa4c07 | 2019-12-20 12:42:49 +0200 | [diff] [blame] | 2327 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2328 | } |
| 2329 | } |
| 2330 | else |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2331 | { |
| 2332 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecjpake_derive_secret", ret ); |
| 2333 | return( ret ); |
| 2334 | } |
| 2335 | } |
| 2336 | else |
| 2337 | #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */ |
| 2338 | #if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED) |
| 2339 | if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) |
| 2340 | == MBEDTLS_KEY_EXCHANGE_RSA ) |
| 2341 | { |
| 2342 | ((void) ret); |
Manuel Pégourié-Gonnard | 8793fab | 2019-08-01 10:44:07 +0200 | [diff] [blame] | 2343 | /* The premaster secret has already been set by |
Hanno Becker | 09d2364 | 2019-07-22 17:18:18 +0100 | [diff] [blame] | 2344 | * ssl_rsa_generate_partial_pms(). Only the |
| 2345 | * PMS length needs to be set. */ |
| 2346 | ssl->handshake->pmslen = 48; |
| 2347 | } |
| 2348 | else |
| 2349 | #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */ |
| 2350 | { |
| 2351 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 2352 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 2353 | } |
| 2354 | |
| 2355 | return( 0 ); |
| 2356 | } |
| 2357 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2358 | #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) |
| 2359 | int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exchange_type_t key_ex ) |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2360 | { |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2361 | unsigned char *p = ssl->handshake->premaster; |
| 2362 | unsigned char *end = p + sizeof( ssl->handshake->premaster ); |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 2363 | const unsigned char *psk = ssl->conf->psk; |
| 2364 | size_t psk_len = ssl->conf->psk_len; |
| 2365 | |
| 2366 | /* If the psk callback was called, use its result */ |
| 2367 | if( ssl->handshake->psk != NULL ) |
| 2368 | { |
| 2369 | psk = ssl->handshake->psk; |
| 2370 | psk_len = ssl->handshake->psk_len; |
| 2371 | } |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2372 | |
| 2373 | /* |
| 2374 | * PMS = struct { |
| 2375 | * opaque other_secret<0..2^16-1>; |
| 2376 | * opaque psk<0..2^16-1>; |
| 2377 | * }; |
| 2378 | * with "other_secret" depending on the particular key exchange |
| 2379 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2380 | #if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED) |
| 2381 | if( key_ex == MBEDTLS_KEY_EXCHANGE_PSK ) |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2382 | { |
Manuel Pégourié-Gonnard | bc5e508 | 2015-10-21 12:35:29 +0200 | [diff] [blame] | 2383 | if( end - p < 2 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2384 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2385 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 2386 | p = mbedtls_platform_put_uint16_be( p, psk_len ); |
Manuel Pégourié-Gonnard | bc5e508 | 2015-10-21 12:35:29 +0200 | [diff] [blame] | 2387 | |
| 2388 | if( end < p || (size_t)( end - p ) < psk_len ) |
| 2389 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 2390 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 2391 | mbedtls_platform_memset( p, 0, psk_len ); |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 2392 | p += psk_len; |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2393 | } |
| 2394 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2395 | #endif /* MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */ |
| 2396 | #if defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED) |
| 2397 | if( key_ex == MBEDTLS_KEY_EXCHANGE_RSA_PSK ) |
Manuel Pégourié-Gonnard | 0fae60b | 2013-10-14 17:39:48 +0200 | [diff] [blame] | 2398 | { |
| 2399 | /* |
| 2400 | * other_secret already set by the ClientKeyExchange message, |
| 2401 | * and is 48 bytes long |
| 2402 | */ |
Philippe Antoine | 747fd53 | 2018-05-30 09:13:21 +0200 | [diff] [blame] | 2403 | if( end - p < 2 ) |
| 2404 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 2405 | |
Manuel Pégourié-Gonnard | 0fae60b | 2013-10-14 17:39:48 +0200 | [diff] [blame] | 2406 | *p++ = 0; |
| 2407 | *p++ = 48; |
| 2408 | p += 48; |
| 2409 | } |
| 2410 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2411 | #endif /* MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */ |
| 2412 | #if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED) |
| 2413 | if( key_ex == MBEDTLS_KEY_EXCHANGE_DHE_PSK ) |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2414 | { |
Manuel Pégourié-Gonnard | 1b62c7f | 2013-10-14 14:02:19 +0200 | [diff] [blame] | 2415 | int ret; |
Manuel Pégourié-Gonnard | 3335205 | 2015-06-02 16:17:08 +0100 | [diff] [blame] | 2416 | size_t len; |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2417 | |
Manuel Pégourié-Gonnard | 8df6863 | 2014-06-23 17:56:08 +0200 | [diff] [blame] | 2418 | /* Write length only when we know the actual value */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2419 | if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx, |
Manuel Pégourié-Gonnard | 3335205 | 2015-06-02 16:17:08 +0100 | [diff] [blame] | 2420 | p + 2, end - ( p + 2 ), &len, |
Hanno Becker | ece325c | 2019-06-13 15:39:27 +0100 | [diff] [blame] | 2421 | mbedtls_ssl_conf_get_frng( ssl->conf ), |
Hanno Becker | 9a12243 | 2019-07-23 13:24:02 +0100 | [diff] [blame] | 2422 | mbedtls_ssl_conf_get_prng( ssl->conf ) ) ) != 0 ) |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2423 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2424 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2425 | return( ret ); |
| 2426 | } |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 2427 | p = mbedtls_platform_put_uint16_be( p, len ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2428 | p += len; |
| 2429 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2430 | MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2431 | } |
| 2432 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2433 | #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */ |
| 2434 | #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED) |
| 2435 | if( key_ex == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK ) |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2436 | { |
Manuel Pégourié-Gonnard | 1b62c7f | 2013-10-14 14:02:19 +0200 | [diff] [blame] | 2437 | int ret; |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2438 | size_t zlen; |
| 2439 | |
Hanno Becker | 982da7e | 2019-09-02 09:47:39 +0100 | [diff] [blame] | 2440 | #if defined(MBEDTLS_USE_TINYCRYPT) |
Manuel Pégourié-Gonnard | 9d6a535 | 2019-11-25 13:06:05 +0100 | [diff] [blame] | 2441 | ret = uECC_shared_secret( ssl->handshake->ecdh_peerkey, |
| 2442 | ssl->handshake->ecdh_privkey, |
| 2443 | p + 2 ); |
| 2444 | if( ret == UECC_FAULT_DETECTED ) |
| 2445 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 2446 | if( ret != UECC_SUCCESS ) |
Hanno Becker | 982da7e | 2019-09-02 09:47:39 +0100 | [diff] [blame] | 2447 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Hanno Becker | 982da7e | 2019-09-02 09:47:39 +0100 | [diff] [blame] | 2448 | |
| 2449 | zlen = NUM_ECC_BYTES; |
| 2450 | #else /* MBEDTLS_USE_TINYCRYPT */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2451 | if( ( ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx, &zlen, |
Paul Bakker | 66d5d07 | 2014-06-17 16:39:18 +0200 | [diff] [blame] | 2452 | p + 2, end - ( p + 2 ), |
Hanno Becker | ece325c | 2019-06-13 15:39:27 +0100 | [diff] [blame] | 2453 | mbedtls_ssl_conf_get_frng( ssl->conf ), |
Hanno Becker | 9a12243 | 2019-07-23 13:24:02 +0100 | [diff] [blame] | 2454 | mbedtls_ssl_conf_get_prng( ssl->conf ) ) ) != 0 ) |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2455 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2456 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2457 | return( ret ); |
| 2458 | } |
| 2459 | |
Hanno Becker | 982da7e | 2019-09-02 09:47:39 +0100 | [diff] [blame] | 2460 | MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, |
| 2461 | MBEDTLS_DEBUG_ECDH_Z ); |
| 2462 | #endif /* MBEDTLS_USE_TINYCRYPT */ |
| 2463 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 2464 | p = mbedtls_platform_put_uint16_be( p, zlen ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2465 | p += zlen; |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2466 | } |
| 2467 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2468 | #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */ |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2469 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2470 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 2471 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2472 | } |
| 2473 | |
| 2474 | /* opaque psk<0..2^16-1>; */ |
Manuel Pégourié-Gonnard | bc5e508 | 2015-10-21 12:35:29 +0200 | [diff] [blame] | 2475 | if( end - p < 2 ) |
| 2476 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | b2bf5a1 | 2014-03-25 16:28:12 +0100 | [diff] [blame] | 2477 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 2478 | p = mbedtls_platform_put_uint16_be( p, psk_len ); |
Manuel Pégourié-Gonnard | bc5e508 | 2015-10-21 12:35:29 +0200 | [diff] [blame] | 2479 | |
| 2480 | if( end < p || (size_t)( end - p ) < psk_len ) |
| 2481 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 2482 | |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 2483 | if( mbedtls_platform_memcpy( p, psk, psk_len ) != p ) |
| 2484 | { |
| 2485 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 2486 | } |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 2487 | p += psk_len; |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2488 | |
| 2489 | ssl->handshake->pmslen = p - ssl->handshake->premaster; |
| 2490 | |
Jarno Lamsa | 67f0a1e | 2019-12-18 16:28:51 +0200 | [diff] [blame] | 2491 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
| 2492 | |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2493 | return( 0 ); |
| 2494 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2495 | #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */ |
Manuel Pégourié-Gonnard | bd1ae24 | 2013-10-14 13:09:25 +0200 | [diff] [blame] | 2496 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2497 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2498 | /* |
| 2499 | * SSLv3.0 MAC functions |
| 2500 | */ |
Manuel Pégourié-Gonnard | b053efb | 2017-12-19 10:03:46 +0100 | [diff] [blame] | 2501 | #define SSL_MAC_MAX_BYTES 20 /* MD-5 or SHA-1 */ |
Manuel Pégourié-Gonnard | 464147c | 2017-12-18 18:04:59 +0100 | [diff] [blame] | 2502 | static void ssl_mac( mbedtls_md_context_t *md_ctx, |
| 2503 | const unsigned char *secret, |
| 2504 | const unsigned char *buf, size_t len, |
| 2505 | const unsigned char *ctr, int type, |
Manuel Pégourié-Gonnard | b053efb | 2017-12-19 10:03:46 +0100 | [diff] [blame] | 2506 | unsigned char out[SSL_MAC_MAX_BYTES] ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2507 | { |
| 2508 | unsigned char header[11]; |
| 2509 | unsigned char padding[48]; |
Manuel Pégourié-Gonnard | 8d4ad07 | 2014-07-13 14:43:28 +0200 | [diff] [blame] | 2510 | int padlen; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2511 | int md_size = mbedtls_md_get_size( md_ctx->md_info ); |
| 2512 | int md_type = mbedtls_md_get_type( md_ctx->md_info ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 2513 | |
Manuel Pégourié-Gonnard | 8d4ad07 | 2014-07-13 14:43:28 +0200 | [diff] [blame] | 2514 | /* Only MD5 and SHA-1 supported */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2515 | if( md_type == MBEDTLS_MD_MD5 ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 2516 | padlen = 48; |
Manuel Pégourié-Gonnard | 8d4ad07 | 2014-07-13 14:43:28 +0200 | [diff] [blame] | 2517 | else |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 2518 | padlen = 40; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2519 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2520 | mbedtls_platform_memcpy( header, ctr, 8 ); |
Arto Kinnunen | 6e3f09b | 2019-09-06 17:37:01 +0300 | [diff] [blame] | 2521 | header[8] = (unsigned char) type; |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 2522 | (void)mbedtls_platform_put_uint16_be( &header[9], len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2523 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 2524 | mbedtls_platform_memset( padding, 0x36, padlen ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2525 | mbedtls_md_starts( md_ctx ); |
| 2526 | mbedtls_md_update( md_ctx, secret, md_size ); |
| 2527 | mbedtls_md_update( md_ctx, padding, padlen ); |
| 2528 | mbedtls_md_update( md_ctx, header, 11 ); |
| 2529 | mbedtls_md_update( md_ctx, buf, len ); |
Manuel Pégourié-Gonnard | 464147c | 2017-12-18 18:04:59 +0100 | [diff] [blame] | 2530 | mbedtls_md_finish( md_ctx, out ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2531 | |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 2532 | mbedtls_platform_memset( padding, 0x5C, padlen ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2533 | mbedtls_md_starts( md_ctx ); |
| 2534 | mbedtls_md_update( md_ctx, secret, md_size ); |
| 2535 | mbedtls_md_update( md_ctx, padding, padlen ); |
Manuel Pégourié-Gonnard | 464147c | 2017-12-18 18:04:59 +0100 | [diff] [blame] | 2536 | mbedtls_md_update( md_ctx, out, md_size ); |
| 2537 | mbedtls_md_finish( md_ctx, out ); |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 2538 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2539 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
Paul Bakker | 5f70b25 | 2012-09-13 14:23:06 +0000 | [diff] [blame] | 2540 | |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 2541 | /* The function below is only used in the Lucky 13 counter-measure in |
Hanno Becker | 30d02cd | 2018-10-18 15:43:13 +0100 | [diff] [blame] | 2542 | * mbedtls_ssl_decrypt_buf(). These are the defines that guard the call site. */ |
Hanno Becker | 5cc04d5 | 2018-01-03 15:24:20 +0000 | [diff] [blame] | 2543 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) && \ |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 2544 | ( defined(MBEDTLS_SSL_PROTO_TLS1) || \ |
| 2545 | defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 2546 | defined(MBEDTLS_SSL_PROTO_TLS1_2) ) |
| 2547 | /* This function makes sure every byte in the memory region is accessed |
| 2548 | * (in ascending addresses order) */ |
| 2549 | static void ssl_read_memory( unsigned char *p, size_t len ) |
| 2550 | { |
| 2551 | unsigned char acc = 0; |
| 2552 | volatile unsigned char force; |
| 2553 | |
| 2554 | for( ; len != 0; p++, len-- ) |
| 2555 | acc ^= *p; |
| 2556 | |
| 2557 | force = acc; |
| 2558 | (void) force; |
| 2559 | } |
| 2560 | #endif /* SSL_SOME_MODES_USE_MAC && ( TLS1 || TLS1_1 || TLS1_2 ) */ |
| 2561 | |
Manuel Pégourié-Gonnard | 0098e7d | 2014-10-28 13:08:59 +0100 | [diff] [blame] | 2562 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2563 | * Encryption/decryption functions |
Paul Bakker | f7abd42 | 2013-04-16 13:15:56 +0200 | [diff] [blame] | 2564 | */ |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2565 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2566 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 8969369 | 2019-05-20 15:06:12 +0100 | [diff] [blame] | 2567 | /* This functions transforms a DTLS plaintext fragment and a record content |
| 2568 | * type into an instance of the DTLSInnerPlaintext structure: |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2569 | * |
| 2570 | * struct { |
| 2571 | * opaque content[DTLSPlaintext.length]; |
| 2572 | * ContentType real_type; |
| 2573 | * uint8 zeros[length_of_padding]; |
| 2574 | * } DTLSInnerPlaintext; |
| 2575 | * |
| 2576 | * Input: |
| 2577 | * - `content`: The beginning of the buffer holding the |
| 2578 | * plaintext to be wrapped. |
| 2579 | * - `*content_size`: The length of the plaintext in Bytes. |
| 2580 | * - `max_len`: The number of Bytes available starting from |
| 2581 | * `content`. This must be `>= *content_size`. |
| 2582 | * - `rec_type`: The desired record content type. |
| 2583 | * |
| 2584 | * Output: |
| 2585 | * - `content`: The beginning of the resulting DTLSInnerPlaintext structure. |
| 2586 | * - `*content_size`: The length of the resulting DTLSInnerPlaintext structure. |
| 2587 | * |
| 2588 | * Returns: |
| 2589 | * - `0` on success. |
| 2590 | * - A negative error code if `max_len` didn't offer enough space |
| 2591 | * for the expansion. |
| 2592 | */ |
| 2593 | static int ssl_cid_build_inner_plaintext( unsigned char *content, |
| 2594 | size_t *content_size, |
| 2595 | size_t remaining, |
| 2596 | uint8_t rec_type ) |
| 2597 | { |
| 2598 | size_t len = *content_size; |
Hanno Becker | 7842609 | 2019-05-13 15:31:17 +0100 | [diff] [blame] | 2599 | size_t pad = ( MBEDTLS_SSL_CID_PADDING_GRANULARITY - |
| 2600 | ( len + 1 ) % MBEDTLS_SSL_CID_PADDING_GRANULARITY ) % |
| 2601 | MBEDTLS_SSL_CID_PADDING_GRANULARITY; |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2602 | |
| 2603 | /* Write real content type */ |
| 2604 | if( remaining == 0 ) |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 2605 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2606 | content[ len ] = rec_type; |
| 2607 | len++; |
| 2608 | remaining--; |
| 2609 | |
| 2610 | if( remaining < pad ) |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 2611 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 2612 | mbedtls_platform_memset( content + len, 0, pad ); |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2613 | len += pad; |
| 2614 | remaining -= pad; |
| 2615 | |
| 2616 | *content_size = len; |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 2617 | return( 0 ); |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2618 | } |
| 2619 | |
Hanno Becker | 7dc2577 | 2019-05-20 15:08:01 +0100 | [diff] [blame] | 2620 | /* This function parses a DTLSInnerPlaintext structure. |
| 2621 | * See ssl_cid_build_inner_plaintext() for details. */ |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2622 | static int ssl_cid_parse_inner_plaintext( unsigned char const *content, |
| 2623 | size_t *content_size, |
| 2624 | uint8_t *rec_type ) |
| 2625 | { |
| 2626 | size_t remaining = *content_size; |
| 2627 | |
| 2628 | /* Determine length of padding by skipping zeroes from the back. */ |
| 2629 | do |
| 2630 | { |
| 2631 | if( remaining == 0 ) |
| 2632 | return( -1 ); |
| 2633 | remaining--; |
| 2634 | } while( content[ remaining ] == 0 ); |
| 2635 | |
| 2636 | *content_size = remaining; |
| 2637 | *rec_type = content[ remaining ]; |
| 2638 | |
| 2639 | return( 0 ); |
| 2640 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2641 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2642 | |
Hanno Becker | 99abf51 | 2019-05-20 14:50:53 +0100 | [diff] [blame] | 2643 | /* `add_data` must have size 13 Bytes if the CID extension is disabled, |
Hanno Becker | acadb0a | 2019-05-08 18:15:21 +0100 | [diff] [blame] | 2644 | * and 13 + 1 + CID-length Bytes if the CID extension is enabled. */ |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2645 | static void ssl_extract_add_data_from_record( unsigned char* add_data, |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2646 | size_t *add_data_len, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2647 | mbedtls_record *rec ) |
| 2648 | { |
Hanno Becker | 99abf51 | 2019-05-20 14:50:53 +0100 | [diff] [blame] | 2649 | /* Quoting RFC 5246 (TLS 1.2): |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2650 | * |
| 2651 | * additional_data = seq_num + TLSCompressed.type + |
| 2652 | * TLSCompressed.version + TLSCompressed.length; |
| 2653 | * |
Hanno Becker | 99abf51 | 2019-05-20 14:50:53 +0100 | [diff] [blame] | 2654 | * For the CID extension, this is extended as follows |
| 2655 | * (quoting draft-ietf-tls-dtls-connection-id-05, |
| 2656 | * https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05): |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2657 | * |
| 2658 | * additional_data = seq_num + DTLSPlaintext.type + |
| 2659 | * DTLSPlaintext.version + |
Hanno Becker | 99abf51 | 2019-05-20 14:50:53 +0100 | [diff] [blame] | 2660 | * cid + |
| 2661 | * cid_length + |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2662 | * length_of_DTLSInnerPlaintext; |
| 2663 | */ |
| 2664 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2665 | mbedtls_platform_memcpy( add_data, rec->ctr, sizeof( rec->ctr ) ); |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2666 | add_data[8] = rec->type; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2667 | mbedtls_platform_memcpy( add_data + 9, rec->ver, sizeof( rec->ver ) ); |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2668 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2669 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 1f02f05 | 2019-05-09 11:38:24 +0100 | [diff] [blame] | 2670 | if( rec->cid_len != 0 ) |
| 2671 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2672 | mbedtls_platform_memcpy( add_data + 11, rec->cid, rec->cid_len ); |
Hanno Becker | 1f02f05 | 2019-05-09 11:38:24 +0100 | [diff] [blame] | 2673 | add_data[11 + rec->cid_len + 0] = rec->cid_len; |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 2674 | (void)mbedtls_platform_put_uint16_be( &add_data[11 + rec->cid_len + 1], |
| 2675 | rec->data_len ); |
Hanno Becker | 1f02f05 | 2019-05-09 11:38:24 +0100 | [diff] [blame] | 2676 | *add_data_len = 13 + 1 + rec->cid_len; |
| 2677 | } |
| 2678 | else |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2679 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 1f02f05 | 2019-05-09 11:38:24 +0100 | [diff] [blame] | 2680 | { |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 2681 | (void)mbedtls_platform_put_uint16_be( &add_data[11], rec->data_len ); |
Hanno Becker | 1f02f05 | 2019-05-09 11:38:24 +0100 | [diff] [blame] | 2682 | *add_data_len = 13; |
| 2683 | } |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2684 | } |
| 2685 | |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 2686 | int mbedtls_ssl_encrypt_buf( mbedtls_ssl_context *ssl, |
| 2687 | mbedtls_ssl_transform *transform, |
| 2688 | mbedtls_record *rec, |
| 2689 | int (*f_rng)(void *, unsigned char *, size_t), |
| 2690 | void *p_rng ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2691 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2692 | mbedtls_cipher_mode_t mode; |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 2693 | int auth_done = 0; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2694 | unsigned char * data; |
Hanno Becker | 28a0c4e | 2019-05-20 14:54:26 +0100 | [diff] [blame] | 2695 | unsigned char add_data[13 + 1 + MBEDTLS_SSL_CID_OUT_LEN_MAX ]; |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2696 | size_t add_data_len; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2697 | size_t post_avail; |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 2698 | int encryption_status = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2699 | |
| 2700 | /* The SSL context is only used for debugging purposes! */ |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 2701 | #if !defined(MBEDTLS_DEBUG_C) |
Manuel Pégourié-Gonnard | 86e48c2 | 2019-05-07 10:17:56 +0200 | [diff] [blame] | 2702 | ssl = NULL; /* make sure we don't use it except for debug */ |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2703 | ((void) ssl); |
| 2704 | #endif |
| 2705 | |
| 2706 | /* The PRNG is used for dynamic IV generation that's used |
| 2707 | * for CBC transformations in TLS 1.1 and TLS 1.2. */ |
| 2708 | #if !( defined(MBEDTLS_CIPHER_MODE_CBC) && \ |
| 2709 | ( defined(MBEDTLS_AES_C) || \ |
| 2710 | defined(MBEDTLS_ARIA_C) || \ |
| 2711 | defined(MBEDTLS_CAMELLIA_C) ) && \ |
| 2712 | ( defined(MBEDTLS_SSL_PROTO_TLS1_1) || defined(MBEDTLS_SSL_PROTO_TLS1_2) ) ) |
| 2713 | ((void) f_rng); |
| 2714 | ((void) p_rng); |
| 2715 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2716 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2717 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> encrypt buf" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2718 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2719 | if( transform == NULL ) |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 2720 | { |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2721 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "no transform provided to encrypt_buf" ) ); |
| 2722 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 2723 | } |
Hanno Becker | 505089d | 2019-05-01 09:45:57 +0100 | [diff] [blame] | 2724 | if( rec == NULL |
| 2725 | || rec->buf == NULL |
| 2726 | || rec->buf_len < rec->data_offset |
| 2727 | || rec->buf_len - rec->data_offset < rec->data_len |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2728 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 505089d | 2019-05-01 09:45:57 +0100 | [diff] [blame] | 2729 | || rec->cid_len != 0 |
| 2730 | #endif |
| 2731 | ) |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2732 | { |
| 2733 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad record structure provided to encrypt_buf" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2734 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 2735 | } |
| 2736 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2737 | data = rec->buf + rec->data_offset; |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2738 | post_avail = rec->buf_len - ( rec->data_len + rec->data_offset ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2739 | MBEDTLS_SSL_DEBUG_BUF( 4, "before encrypt: output payload", |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2740 | data, rec->data_len ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2741 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 2742 | mode = mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx ); |
| 2743 | #else |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2744 | mode = mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx_enc ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2745 | #endif |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2746 | if( rec->data_len > MBEDTLS_SSL_OUT_CONTENT_LEN ) |
| 2747 | { |
| 2748 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Record content %u too large, maximum %d", |
| 2749 | (unsigned) rec->data_len, |
| 2750 | MBEDTLS_SSL_OUT_CONTENT_LEN ) ); |
| 2751 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 2752 | } |
Manuel Pégourié-Gonnard | 60346be | 2014-11-21 11:38:37 +0100 | [diff] [blame] | 2753 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2754 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2755 | /* |
| 2756 | * Add CID information |
| 2757 | */ |
| 2758 | rec->cid_len = transform->out_cid_len; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 2759 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 2760 | memcpy( rec->cid, transform->out_cid, transform->out_cid_len ); |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2761 | MBEDTLS_SSL_DEBUG_BUF( 3, "CID", rec->cid, rec->cid_len ); |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2762 | if( rec->cid_len != 0 ) |
| 2763 | { |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 2764 | int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2765 | /* |
Hanno Becker | 7dc2577 | 2019-05-20 15:08:01 +0100 | [diff] [blame] | 2766 | * Wrap plaintext into DTLSInnerPlaintext structure. |
| 2767 | * See ssl_cid_build_inner_plaintext() for more information. |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2768 | * |
Hanno Becker | 7dc2577 | 2019-05-20 15:08:01 +0100 | [diff] [blame] | 2769 | * Note that this changes `rec->data_len`, and hence |
| 2770 | * `post_avail` needs to be recalculated afterwards. |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2771 | */ |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 2772 | if( ( ret = ssl_cid_build_inner_plaintext( data, |
| 2773 | &rec->data_len, |
| 2774 | post_avail, |
| 2775 | rec->type ) ) != 0 ) |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2776 | { |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 2777 | return( ret ); |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2778 | } |
| 2779 | |
| 2780 | rec->type = MBEDTLS_SSL_MSG_CID; |
| 2781 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 2782 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2783 | |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 2784 | post_avail = rec->buf_len - ( rec->data_len + rec->data_offset ); |
| 2785 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2786 | /* |
Manuel Pégourié-Gonnard | 0098e7d | 2014-10-28 13:08:59 +0100 | [diff] [blame] | 2787 | * Add MAC before if needed |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2788 | */ |
Hanno Becker | 5cc04d5 | 2018-01-03 15:24:20 +0000 | [diff] [blame] | 2789 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2790 | if( mode == MBEDTLS_MODE_STREAM || |
| 2791 | ( mode == MBEDTLS_MODE_CBC |
| 2792 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2793 | && transform->encrypt_then_mac == MBEDTLS_SSL_ETM_DISABLED |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 2794 | #endif |
| 2795 | ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2796 | { |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2797 | if( post_avail < transform->maclen ) |
| 2798 | { |
| 2799 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Buffer provided for encrypted record not large enough" ) ); |
| 2800 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| 2801 | } |
| 2802 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2803 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 0a92b81 | 2019-06-24 15:46:40 +0100 | [diff] [blame] | 2804 | if( mbedtls_ssl_transform_get_minor_ver( transform ) == |
| 2805 | MBEDTLS_SSL_MINOR_VERSION_0 ) |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2806 | { |
Manuel Pégourié-Gonnard | b053efb | 2017-12-19 10:03:46 +0100 | [diff] [blame] | 2807 | unsigned char mac[SSL_MAC_MAX_BYTES]; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2808 | ssl_mac( &transform->md_ctx_enc, transform->mac_enc, |
| 2809 | data, rec->data_len, rec->ctr, rec->type, mac ); |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2810 | mbedtls_platform_memcpy( data + rec->data_len, mac, transform->maclen ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2811 | } |
| 2812 | else |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 2813 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2814 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 2815 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 2816 | if( mbedtls_ssl_ver_geq( |
| 2817 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 2818 | MBEDTLS_SSL_MINOR_VERSION_1 ) ) |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2819 | { |
Hanno Becker | 992b687 | 2017-11-09 18:57:39 +0000 | [diff] [blame] | 2820 | unsigned char mac[MBEDTLS_SSL_MAC_ADD]; |
| 2821 | |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2822 | ssl_extract_add_data_from_record( add_data, &add_data_len, rec ); |
Hanno Becker | 992b687 | 2017-11-09 18:57:39 +0000 | [diff] [blame] | 2823 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2824 | mbedtls_md_hmac_update( &transform->md_ctx_enc, add_data, |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2825 | add_data_len ); |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2826 | mbedtls_md_hmac_update( &transform->md_ctx_enc, |
| 2827 | data, rec->data_len ); |
| 2828 | mbedtls_md_hmac_finish( &transform->md_ctx_enc, mac ); |
| 2829 | mbedtls_md_hmac_reset( &transform->md_ctx_enc ); |
| 2830 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2831 | mbedtls_platform_memcpy( data + rec->data_len, mac, transform->maclen ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2832 | } |
| 2833 | else |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 2834 | #endif |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2835 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2836 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 2837 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2838 | } |
| 2839 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2840 | MBEDTLS_SSL_DEBUG_BUF( 4, "computed mac", data + rec->data_len, |
| 2841 | transform->maclen ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2842 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2843 | rec->data_len += transform->maclen; |
| 2844 | post_avail -= transform->maclen; |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 2845 | auth_done++; |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 2846 | } |
Hanno Becker | 5cc04d5 | 2018-01-03 15:24:20 +0000 | [diff] [blame] | 2847 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2848 | |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 2849 | /* |
| 2850 | * Encrypt |
| 2851 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2852 | #if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) |
| 2853 | if( mode == MBEDTLS_MODE_STREAM ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2854 | { |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 2855 | int ret; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2856 | size_t olen; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2857 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, " |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2858 | "including %d bytes of padding", |
| 2859 | rec->data_len, 0 ) ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2860 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 2861 | if( ( ret = mbedtls_ssl_switch_key( transform, MBEDTLS_ENCRYPT ) ) |
| 2862 | != 0 ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2863 | { |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 2864 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_switch_key", ret ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2865 | return( ret ); |
| 2866 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2867 | |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 2868 | if( ( ret = encryption_status = mbedtls_cipher_crypt( &transform->cipher_ctx, |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2869 | transform->iv_enc, transform->ivlen, |
| 2870 | data, rec->data_len, |
| 2871 | data, &olen ) ) != 0 ) |
| 2872 | { |
| 2873 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
| 2874 | return( ret ); |
| 2875 | } |
| 2876 | #else |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 2877 | if( ( ret = encryption_status = mbedtls_cipher_crypt( &transform->cipher_ctx_enc, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2878 | transform->iv_enc, transform->ivlen, |
| 2879 | data, rec->data_len, |
| 2880 | data, &olen ) ) != 0 ) |
Paul Bakker | 45125bc | 2013-09-04 16:47:11 +0200 | [diff] [blame] | 2881 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2882 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 2883 | return( ret ); |
| 2884 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2885 | #endif |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2886 | if( rec->data_len != olen ) |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 2887 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2888 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 2889 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 2890 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2891 | } |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 2892 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2893 | #endif /* MBEDTLS_ARC4_C || MBEDTLS_CIPHER_NULL_CIPHER */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 2894 | |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2895 | #if defined(MBEDTLS_GCM_C) || \ |
| 2896 | defined(MBEDTLS_CCM_C) || \ |
| 2897 | defined(MBEDTLS_CHACHAPOLY_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2898 | if( mode == MBEDTLS_MODE_GCM || |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2899 | mode == MBEDTLS_MODE_CCM || |
| 2900 | mode == MBEDTLS_MODE_CHACHAPOLY ) |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 2901 | { |
Manuel Pégourié-Gonnard | 2e5ee32 | 2014-05-14 13:09:22 +0200 | [diff] [blame] | 2902 | int ret; |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2903 | unsigned char iv[12]; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2904 | size_t explicit_iv_len = transform->ivlen - transform->fixed_ivlen; |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 2905 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2906 | /* Check that there's space for both the authentication tag |
| 2907 | * and the explicit IV before and after the record content. */ |
| 2908 | if( post_avail < transform->taglen || |
| 2909 | rec->data_offset < explicit_iv_len ) |
| 2910 | { |
| 2911 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Buffer provided for encrypted record not large enough" ) ); |
| 2912 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| 2913 | } |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 2914 | |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 2915 | /* |
| 2916 | * Generate IV |
| 2917 | */ |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2918 | if( transform->ivlen == 12 && transform->fixed_ivlen == 4 ) |
| 2919 | { |
Manuel Pégourié-Gonnard | 8744a02 | 2018-07-11 12:30:40 +0200 | [diff] [blame] | 2920 | /* GCM and CCM: fixed || explicit (=seqnum) */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2921 | mbedtls_platform_memcpy( iv, transform->iv_enc, transform->fixed_ivlen ); |
| 2922 | mbedtls_platform_memcpy( iv + transform->fixed_ivlen, rec->ctr, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2923 | explicit_iv_len ); |
| 2924 | /* Prefix record content with explicit IV. */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2925 | mbedtls_platform_memcpy( data - explicit_iv_len, rec->ctr, explicit_iv_len ); |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2926 | } |
| 2927 | else if( transform->ivlen == 12 && transform->fixed_ivlen == 12 ) |
| 2928 | { |
Manuel Pégourié-Gonnard | 8744a02 | 2018-07-11 12:30:40 +0200 | [diff] [blame] | 2929 | /* ChachaPoly: fixed XOR sequence number */ |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2930 | unsigned char i; |
| 2931 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 2932 | mbedtls_platform_memcpy( iv, transform->iv_enc, transform->fixed_ivlen ); |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2933 | |
| 2934 | for( i = 0; i < 8; i++ ) |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2935 | iv[i+4] ^= rec->ctr[i]; |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2936 | } |
| 2937 | else |
Manuel Pégourié-Gonnard | d056ce0 | 2014-10-29 22:29:20 +0100 | [diff] [blame] | 2938 | { |
| 2939 | /* Reminder if we ever add an AEAD mode with a different size */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2940 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 2941 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | d056ce0 | 2014-10-29 22:29:20 +0100 | [diff] [blame] | 2942 | } |
| 2943 | |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2944 | ssl_extract_add_data_from_record( add_data, &add_data_len, rec ); |
Hanno Becker | 0888581 | 2019-04-26 13:34:37 +0100 | [diff] [blame] | 2945 | |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2946 | MBEDTLS_SSL_DEBUG_BUF( 4, "IV used (internal)", |
| 2947 | iv, transform->ivlen ); |
| 2948 | MBEDTLS_SSL_DEBUG_BUF( 4, "IV used (transmitted)", |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2949 | data - explicit_iv_len, explicit_iv_len ); |
| 2950 | MBEDTLS_SSL_DEBUG_BUF( 4, "additional data used for AEAD", |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2951 | add_data, add_data_len ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2952 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, " |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 2953 | "including 0 bytes of padding", |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2954 | rec->data_len ) ); |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 2955 | |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 2956 | /* |
Manuel Pégourié-Gonnard | de7bb44 | 2014-05-13 12:41:10 +0200 | [diff] [blame] | 2957 | * Encrypt and authenticate |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 2958 | */ |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2959 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 2960 | if( ( ret = mbedtls_ssl_switch_key( transform, MBEDTLS_ENCRYPT ) ) |
| 2961 | != 0 ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2962 | { |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 2963 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_switch_key", ret ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2964 | return( ret ); |
| 2965 | } |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2966 | |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 2967 | if( ( ret = encryption_status = mbedtls_cipher_auth_encrypt( &transform->cipher_ctx, |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2968 | iv, transform->ivlen, |
| 2969 | add_data, add_data_len, /* add data */ |
| 2970 | data, rec->data_len, /* source */ |
| 2971 | data, &rec->data_len, /* destination */ |
| 2972 | data + rec->data_len, transform->taglen ) ) != 0 ) |
| 2973 | { |
| 2974 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_auth_encrypt", ret ); |
| 2975 | return( ret ); |
| 2976 | } |
| 2977 | #else |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 2978 | if( ( ret = encryption_status = mbedtls_cipher_auth_encrypt( &transform->cipher_ctx_enc, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2979 | iv, transform->ivlen, |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 2980 | add_data, add_data_len, /* add data */ |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2981 | data, rec->data_len, /* source */ |
| 2982 | data, &rec->data_len, /* destination */ |
| 2983 | data + rec->data_len, transform->taglen ) ) != 0 ) |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 2984 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2985 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_auth_encrypt", ret ); |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 2986 | return( ret ); |
| 2987 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 2988 | #endif |
Andrzej Kurek | 8ec9e13 | 2020-08-10 00:26:40 -0400 | [diff] [blame] | 2989 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2990 | MBEDTLS_SSL_DEBUG_BUF( 4, "after encrypt: tag", |
| 2991 | data + rec->data_len, transform->taglen ); |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 2992 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 2993 | rec->data_len += transform->taglen + explicit_iv_len; |
| 2994 | rec->data_offset -= explicit_iv_len; |
| 2995 | post_avail -= transform->taglen; |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 2996 | auth_done++; |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 2997 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2998 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 2999 | #endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C */ |
| 3000 | #if defined(MBEDTLS_CIPHER_MODE_CBC) && \ |
Markku-Juhani O. Saarinen | c06e101 | 2017-12-07 11:51:13 +0000 | [diff] [blame] | 3001 | ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_CAMELLIA_C) || defined(MBEDTLS_ARIA_C) ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3002 | if( mode == MBEDTLS_MODE_CBC ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3003 | { |
Paul Bakker | da02a7f | 2013-08-31 17:25:14 +0200 | [diff] [blame] | 3004 | int ret; |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3005 | size_t padlen, i; |
| 3006 | size_t olen; |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3007 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3008 | /* Currently we're always using minimal padding |
| 3009 | * (up to 255 bytes would be allowed). */ |
| 3010 | padlen = transform->ivlen - ( rec->data_len + 1 ) % transform->ivlen; |
| 3011 | if( padlen == transform->ivlen ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3012 | padlen = 0; |
| 3013 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3014 | /* Check there's enough space in the buffer for the padding. */ |
| 3015 | if( post_avail < padlen + 1 ) |
| 3016 | { |
| 3017 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Buffer provided for encrypted record not large enough" ) ); |
| 3018 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| 3019 | } |
| 3020 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3021 | for( i = 0; i <= padlen; i++ ) |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3022 | data[rec->data_len + i] = (unsigned char) padlen; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3023 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3024 | rec->data_len += padlen + 1; |
| 3025 | post_avail -= padlen + 1; |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3026 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3027 | #if defined(MBEDTLS_SSL_PROTO_TLS1_1) || defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3028 | /* |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 3029 | * Prepend per-record IV for block cipher in TLS v1.1 and up as per |
| 3030 | * Method 1 (6.2.3.2. in RFC4346 and RFC5246) |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3031 | */ |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3032 | if( mbedtls_ssl_ver_geq( |
| 3033 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3034 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3035 | { |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3036 | if( f_rng == NULL ) |
| 3037 | { |
| 3038 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "No PRNG provided to encrypt_record routine" ) ); |
| 3039 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 3040 | } |
| 3041 | |
| 3042 | if( rec->data_offset < transform->ivlen ) |
| 3043 | { |
| 3044 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Buffer provided for encrypted record not large enough" ) ); |
| 3045 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| 3046 | } |
| 3047 | |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3048 | /* |
| 3049 | * Generate IV |
| 3050 | */ |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3051 | ret = f_rng( p_rng, transform->iv_enc, transform->ivlen ); |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 3052 | if( ret != 0 ) |
| 3053 | return( ret ); |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3054 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3055 | mbedtls_platform_memcpy( data - transform->ivlen, transform->iv_enc, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3056 | transform->ivlen ); |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3057 | |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3058 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3059 | #endif /* MBEDTLS_SSL_PROTO_TLS1_1 || MBEDTLS_SSL_PROTO_TLS1_2 */ |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3060 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3061 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, " |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3062 | "including %d bytes of IV and %d bytes of padding", |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3063 | rec->data_len, transform->ivlen, |
Paul Bakker | b9e4e2c | 2014-05-01 14:18:25 +0200 | [diff] [blame] | 3064 | padlen + 1 ) ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3065 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3066 | if( ( ret = mbedtls_ssl_switch_key( transform, MBEDTLS_ENCRYPT ) ) |
| 3067 | != 0 ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3068 | { |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3069 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_switch_key", ret ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3070 | return( ret ); |
| 3071 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3072 | |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 3073 | if( ( ret = encryption_status = mbedtls_cipher_crypt( &transform->cipher_ctx, |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3074 | transform->iv_enc, |
| 3075 | transform->ivlen, |
| 3076 | data, rec->data_len, |
| 3077 | data, &olen ) ) != 0 ) |
| 3078 | { |
| 3079 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
| 3080 | return( ret ); |
| 3081 | } |
| 3082 | #else |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 3083 | if( ( ret = encryption_status = mbedtls_cipher_crypt( &transform->cipher_ctx_enc, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3084 | transform->iv_enc, |
| 3085 | transform->ivlen, |
| 3086 | data, rec->data_len, |
| 3087 | data, &olen ) ) != 0 ) |
Paul Bakker | 45125bc | 2013-09-04 16:47:11 +0200 | [diff] [blame] | 3088 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3089 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3090 | return( ret ); |
| 3091 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3092 | #endif |
Andrzej Kurek | 8ec9e13 | 2020-08-10 00:26:40 -0400 | [diff] [blame] | 3093 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3094 | if( rec->data_len != olen ) |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3095 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3096 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3097 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3098 | } |
Paul Bakker | da02a7f | 2013-08-31 17:25:14 +0200 | [diff] [blame] | 3099 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3100 | #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3101 | if( mbedtls_ssl_ver_lt( |
| 3102 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3103 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3104 | { |
| 3105 | /* |
| 3106 | * Save IV in SSL3 and TLS1 |
| 3107 | */ |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3108 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 3109 | mbedtls_platform_memcpy( transform->iv_enc, transform->cipher_ctx.iv, |
| 3110 | transform->ivlen ); |
| 3111 | #else |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3112 | mbedtls_platform_memcpy( transform->iv_enc, transform->cipher_ctx_enc.iv, |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3113 | transform->ivlen ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3114 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3115 | } |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3116 | else |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3117 | #endif |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3118 | { |
| 3119 | data -= transform->ivlen; |
| 3120 | rec->data_offset -= transform->ivlen; |
| 3121 | rec->data_len += transform->ivlen; |
| 3122 | } |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3123 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3124 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3125 | if( auth_done == 0 ) |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3126 | { |
Hanno Becker | 3d8c907 | 2018-01-05 16:24:22 +0000 | [diff] [blame] | 3127 | unsigned char mac[MBEDTLS_SSL_MAC_ADD]; |
| 3128 | |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3129 | /* |
| 3130 | * MAC(MAC_write_key, seq_num + |
| 3131 | * TLSCipherText.type + |
| 3132 | * TLSCipherText.version + |
Manuel Pégourié-Gonnard | 08558e5 | 2014-11-04 14:40:21 +0100 | [diff] [blame] | 3133 | * length_of( (IV +) ENC(...) ) + |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3134 | * IV + // except for TLS 1.0 |
| 3135 | * ENC(content + padding + padding_length)); |
| 3136 | */ |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3137 | |
| 3138 | if( post_avail < transform->maclen) |
| 3139 | { |
| 3140 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Buffer provided for encrypted record not large enough" ) ); |
| 3141 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| 3142 | } |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3143 | |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3144 | ssl_extract_add_data_from_record( add_data, &add_data_len, rec ); |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3145 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3146 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "using encrypt then mac" ) ); |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3147 | MBEDTLS_SSL_DEBUG_BUF( 4, "MAC'd meta-data", add_data, |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3148 | add_data_len ); |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3149 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3150 | mbedtls_md_hmac_update( &transform->md_ctx_enc, add_data, |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3151 | add_data_len ); |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3152 | mbedtls_md_hmac_update( &transform->md_ctx_enc, |
| 3153 | data, rec->data_len ); |
| 3154 | mbedtls_md_hmac_finish( &transform->md_ctx_enc, mac ); |
| 3155 | mbedtls_md_hmac_reset( &transform->md_ctx_enc ); |
Manuel Pégourié-Gonnard | 08558e5 | 2014-11-04 14:40:21 +0100 | [diff] [blame] | 3156 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3157 | mbedtls_platform_memcpy( data + rec->data_len, mac, transform->maclen ); |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3158 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 3159 | rec->data_len += transform->maclen; |
| 3160 | post_avail -= transform->maclen; |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3161 | auth_done++; |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3162 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3163 | #endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3164 | } |
Manuel Pégourié-Gonnard | f7dc378 | 2013-09-13 14:10:44 +0200 | [diff] [blame] | 3165 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3166 | #endif /* MBEDTLS_CIPHER_MODE_CBC && |
Markku-Juhani O. Saarinen | c06e101 | 2017-12-07 11:51:13 +0000 | [diff] [blame] | 3167 | ( MBEDTLS_AES_C || MBEDTLS_CAMELLIA_C || MBEDTLS_ARIA_C ) */ |
Manuel Pégourié-Gonnard | f7dc378 | 2013-09-13 14:10:44 +0200 | [diff] [blame] | 3168 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3169 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3170 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | f7dc378 | 2013-09-13 14:10:44 +0200 | [diff] [blame] | 3171 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3172 | |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3173 | /* Make extra sure authentication was performed, exactly once */ |
| 3174 | if( auth_done != 1 ) |
| 3175 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3176 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3177 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3178 | } |
| 3179 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3180 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= encrypt buf" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3181 | |
Andrzej Kurek | ff51721 | 2020-08-10 07:10:35 -0400 | [diff] [blame] | 3182 | if( encryption_status == 0 ) |
Andrzej Kurek | 8ec9e13 | 2020-08-10 00:26:40 -0400 | [diff] [blame] | 3183 | { |
| 3184 | return( 0 ); |
| 3185 | } |
| 3186 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3187 | } |
| 3188 | |
Hanno Becker | 40478be | 2019-07-12 08:23:59 +0100 | [diff] [blame] | 3189 | int mbedtls_ssl_decrypt_buf( mbedtls_ssl_context const *ssl, |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 3190 | mbedtls_ssl_transform *transform, |
| 3191 | mbedtls_record *rec ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3192 | { |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3193 | size_t olen; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3194 | mbedtls_cipher_mode_t mode; |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3195 | int ret, auth_done = 0; |
Hanno Becker | 5cc04d5 | 2018-01-03 15:24:20 +0000 | [diff] [blame] | 3196 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Paul Bakker | 1e5369c | 2013-12-19 16:40:57 +0100 | [diff] [blame] | 3197 | size_t padlen = 0, correct = 1; |
| 3198 | #endif |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3199 | unsigned char* data; |
Hanno Becker | 28a0c4e | 2019-05-20 14:54:26 +0100 | [diff] [blame] | 3200 | unsigned char add_data[13 + 1 + MBEDTLS_SSL_CID_IN_LEN_MAX ]; |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3201 | size_t add_data_len; |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3202 | |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 3203 | #if !defined(MBEDTLS_DEBUG_C) |
Manuel Pégourié-Gonnard | 86e48c2 | 2019-05-07 10:17:56 +0200 | [diff] [blame] | 3204 | ssl = NULL; /* make sure we don't use it except for debug */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3205 | ((void) ssl); |
| 3206 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3207 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3208 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> decrypt buf" ) ); |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3209 | if( rec == NULL || |
| 3210 | rec->buf == NULL || |
| 3211 | rec->buf_len < rec->data_offset || |
| 3212 | rec->buf_len - rec->data_offset < rec->data_len ) |
| 3213 | { |
| 3214 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad record structure provided to decrypt_buf" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3215 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3216 | } |
| 3217 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3218 | data = rec->buf + rec->data_offset; |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3219 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 3220 | mode = mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx ); |
| 3221 | #else |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3222 | mode = mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx_dec ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3223 | #endif |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 3224 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3225 | /* |
| 3226 | * Match record's CID with incoming CID. |
| 3227 | */ |
Hanno Becker | abd7c89 | 2019-05-08 13:02:22 +0100 | [diff] [blame] | 3228 | if( rec->cid_len != transform->in_cid_len || |
Teppo Järvelin | 0efac53 | 2019-10-04 13:21:08 +0300 | [diff] [blame] | 3229 | memcmp( rec->cid, transform->in_cid, rec->cid_len ) != 0 ) // use regular memcmp as CID is public |
Hanno Becker | abd7c89 | 2019-05-08 13:02:22 +0100 | [diff] [blame] | 3230 | { |
Hanno Becker | e8eff9a | 2019-05-14 11:30:10 +0100 | [diff] [blame] | 3231 | return( MBEDTLS_ERR_SSL_UNEXPECTED_CID ); |
Hanno Becker | abd7c89 | 2019-05-08 13:02:22 +0100 | [diff] [blame] | 3232 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 3233 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3234 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3235 | #if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) |
| 3236 | if( mode == MBEDTLS_MODE_STREAM ) |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 3237 | { |
| 3238 | padlen = 0; |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3239 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3240 | if( ( ret = mbedtls_ssl_switch_key( transform, MBEDTLS_DECRYPT ) ) |
| 3241 | != 0 ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3242 | { |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3243 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_switch_key", ret ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3244 | return( ret ); |
| 3245 | } |
| 3246 | if( ( ret = mbedtls_cipher_crypt( &transform->cipher_ctx, |
| 3247 | transform->iv_dec, |
| 3248 | transform->ivlen, |
| 3249 | data, rec->data_len, |
| 3250 | data, &olen ) ) != 0 ) |
| 3251 | { |
| 3252 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
| 3253 | return( ret ); |
| 3254 | } |
| 3255 | #else |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3256 | if( ( ret = mbedtls_cipher_crypt( &transform->cipher_ctx_dec, |
| 3257 | transform->iv_dec, |
| 3258 | transform->ivlen, |
| 3259 | data, rec->data_len, |
| 3260 | data, &olen ) ) != 0 ) |
Paul Bakker | 45125bc | 2013-09-04 16:47:11 +0200 | [diff] [blame] | 3261 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3262 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 3263 | return( ret ); |
| 3264 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3265 | #endif |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3266 | if( rec->data_len != olen ) |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 3267 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3268 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3269 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | ea6ad3f | 2013-09-02 14:57:01 +0200 | [diff] [blame] | 3270 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3271 | } |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 3272 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3273 | #endif /* MBEDTLS_ARC4_C || MBEDTLS_CIPHER_NULL_CIPHER */ |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3274 | #if defined(MBEDTLS_GCM_C) || \ |
| 3275 | defined(MBEDTLS_CCM_C) || \ |
| 3276 | defined(MBEDTLS_CHACHAPOLY_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3277 | if( mode == MBEDTLS_MODE_GCM || |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3278 | mode == MBEDTLS_MODE_CCM || |
| 3279 | mode == MBEDTLS_MODE_CHACHAPOLY ) |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 3280 | { |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3281 | unsigned char iv[12]; |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3282 | size_t explicit_iv_len = transform->ivlen - transform->fixed_ivlen; |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 3283 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3284 | /* |
| 3285 | * Prepare IV from explicit and implicit data. |
| 3286 | */ |
| 3287 | |
| 3288 | /* Check that there's enough space for the explicit IV |
| 3289 | * (at the beginning of the record) and the MAC (at the |
| 3290 | * end of the record). */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3291 | if( rec->data_len < explicit_iv_len + transform->taglen ) |
Manuel Pégourié-Gonnard | 0bcc4e1 | 2014-06-17 10:54:17 +0200 | [diff] [blame] | 3292 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3293 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) < explicit_iv_len (%d) " |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3294 | "+ taglen (%d)", rec->data_len, |
| 3295 | explicit_iv_len, transform->taglen ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3296 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Manuel Pégourié-Gonnard | 0bcc4e1 | 2014-06-17 10:54:17 +0200 | [diff] [blame] | 3297 | } |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 3298 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3299 | #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CCM_C) |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3300 | if( transform->ivlen == 12 && transform->fixed_ivlen == 4 ) |
| 3301 | { |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3302 | /* GCM and CCM: fixed || explicit */ |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 3303 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3304 | /* Fixed */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3305 | mbedtls_platform_memcpy( iv, transform->iv_dec, transform->fixed_ivlen ); |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3306 | /* Explicit */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3307 | mbedtls_platform_memcpy( iv + transform->fixed_ivlen, data, 8 ); |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3308 | } |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3309 | else |
| 3310 | #endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C */ |
| 3311 | #if defined(MBEDTLS_CHACHAPOLY_C) |
| 3312 | if( transform->ivlen == 12 && transform->fixed_ivlen == 12 ) |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3313 | { |
Manuel Pégourié-Gonnard | 8744a02 | 2018-07-11 12:30:40 +0200 | [diff] [blame] | 3314 | /* ChachaPoly: fixed XOR sequence number */ |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3315 | unsigned char i; |
| 3316 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3317 | mbedtls_platform_memcpy( iv, transform->iv_dec, transform->fixed_ivlen ); |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3318 | |
| 3319 | for( i = 0; i < 8; i++ ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3320 | iv[i+4] ^= rec->ctr[i]; |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3321 | } |
| 3322 | else |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3323 | #endif /* MBEDTLS_CHACHAPOLY_C */ |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3324 | { |
| 3325 | /* Reminder if we ever add an AEAD mode with a different size */ |
| 3326 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3327 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 3328 | } |
| 3329 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3330 | /* Group changes to data, data_len, and add_data, because |
| 3331 | * add_data depends on data_len. */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3332 | data += explicit_iv_len; |
| 3333 | rec->data_offset += explicit_iv_len; |
| 3334 | rec->data_len -= explicit_iv_len + transform->taglen; |
| 3335 | |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3336 | ssl_extract_add_data_from_record( add_data, &add_data_len, rec ); |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3337 | MBEDTLS_SSL_DEBUG_BUF( 4, "additional data used for AEAD", |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3338 | add_data, add_data_len ); |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3339 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3340 | /* Because of the check above, we know that there are |
| 3341 | * explicit_iv_len Bytes preceeding data, and taglen |
| 3342 | * bytes following data + data_len. This justifies |
Hanno Becker | 07d420d | 2019-07-10 11:44:13 +0100 | [diff] [blame] | 3343 | * the debug message and the invocation of |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3344 | * mbedtls_cipher_auth_decrypt() below. */ |
| 3345 | |
Manuel Pégourié-Gonnard | 2e58e8e | 2018-06-18 11:16:43 +0200 | [diff] [blame] | 3346 | MBEDTLS_SSL_DEBUG_BUF( 4, "IV used", iv, transform->ivlen ); |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3347 | MBEDTLS_SSL_DEBUG_BUF( 4, "TAG used", data + rec->data_len, |
Hanno Becker | 8759e16 | 2017-12-27 21:34:08 +0000 | [diff] [blame] | 3348 | transform->taglen ); |
Paul Bakker | 68884e3 | 2013-01-07 18:20:04 +0100 | [diff] [blame] | 3349 | |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 3350 | /* |
Manuel Pégourié-Gonnard | de7bb44 | 2014-05-13 12:41:10 +0200 | [diff] [blame] | 3351 | * Decrypt and authenticate |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 3352 | */ |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3353 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3354 | if( ( ret = mbedtls_ssl_switch_key( transform, MBEDTLS_DECRYPT ) ) |
| 3355 | != 0 ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3356 | { |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3357 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_switch_key", ret ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3358 | return( ret ); |
| 3359 | } |
| 3360 | if( ( ret = mbedtls_cipher_auth_decrypt( &transform->cipher_ctx, |
| 3361 | iv, transform->ivlen, |
| 3362 | add_data, add_data_len, |
| 3363 | data, rec->data_len, |
| 3364 | data, &olen, |
| 3365 | data + rec->data_len, |
| 3366 | transform->taglen ) ) != 0 ) |
| 3367 | { |
| 3368 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_auth_decrypt", ret ); |
| 3369 | |
| 3370 | if( ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED ) |
| 3371 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
| 3372 | |
| 3373 | return( ret ); |
| 3374 | } |
| 3375 | #else |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3376 | if( ( ret = mbedtls_cipher_auth_decrypt( &transform->cipher_ctx_dec, |
| 3377 | iv, transform->ivlen, |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3378 | add_data, add_data_len, |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3379 | data, rec->data_len, |
| 3380 | data, &olen, |
| 3381 | data + rec->data_len, |
| 3382 | transform->taglen ) ) != 0 ) |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 3383 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3384 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_auth_decrypt", ret ); |
Manuel Pégourié-Gonnard | de7bb44 | 2014-05-13 12:41:10 +0200 | [diff] [blame] | 3385 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3386 | if( ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED ) |
| 3387 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Manuel Pégourié-Gonnard | de7bb44 | 2014-05-13 12:41:10 +0200 | [diff] [blame] | 3388 | |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 3389 | return( ret ); |
| 3390 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3391 | #endif |
| 3392 | |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3393 | auth_done++; |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 3394 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3395 | /* Double-check that AEAD decryption doesn't change content length. */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3396 | if( olen != rec->data_len ) |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 3397 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3398 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3399 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | d13a409 | 2013-09-05 16:10:41 +0200 | [diff] [blame] | 3400 | } |
Paul Bakker | ca4ab49 | 2012-04-18 14:23:57 +0000 | [diff] [blame] | 3401 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3402 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3403 | #endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C */ |
| 3404 | #if defined(MBEDTLS_CIPHER_MODE_CBC) && \ |
Markku-Juhani O. Saarinen | c06e101 | 2017-12-07 11:51:13 +0000 | [diff] [blame] | 3405 | ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_CAMELLIA_C) || defined(MBEDTLS_ARIA_C) ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3406 | if( mode == MBEDTLS_MODE_CBC ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3407 | { |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3408 | size_t minlen = 0; |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3409 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3410 | /* |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3411 | * Check immediate ciphertext sanity |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3412 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3413 | #if defined(MBEDTLS_SSL_PROTO_TLS1_1) || defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3414 | if( mbedtls_ssl_ver_geq( |
| 3415 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3416 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3417 | { |
| 3418 | /* The ciphertext is prefixed with the CBC IV. */ |
| 3419 | minlen += transform->ivlen; |
| 3420 | } |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 3421 | #endif |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3422 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3423 | /* Size considerations: |
| 3424 | * |
| 3425 | * - The CBC cipher text must not be empty and hence |
| 3426 | * at least of size transform->ivlen. |
| 3427 | * |
| 3428 | * Together with the potential IV-prefix, this explains |
| 3429 | * the first of the two checks below. |
| 3430 | * |
| 3431 | * - The record must contain a MAC, either in plain or |
| 3432 | * encrypted, depending on whether Encrypt-then-MAC |
| 3433 | * is used or not. |
| 3434 | * - If it is, the message contains the IV-prefix, |
| 3435 | * the CBC ciphertext, and the MAC. |
| 3436 | * - If it is not, the padded plaintext, and hence |
| 3437 | * the CBC ciphertext, has at least length maclen + 1 |
| 3438 | * because there is at least the padding length byte. |
| 3439 | * |
| 3440 | * As the CBC ciphertext is not empty, both cases give the |
| 3441 | * lower bound minlen + maclen + 1 on the record size, which |
| 3442 | * we test for in the second check below. |
| 3443 | */ |
| 3444 | if( rec->data_len < minlen + transform->ivlen || |
| 3445 | rec->data_len < minlen + transform->maclen + 1 ) |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3446 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3447 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) < max( ivlen(%d), maclen (%d) " |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3448 | "+ 1 ) ( + expl IV )", rec->data_len, |
| 3449 | transform->ivlen, |
| 3450 | transform->maclen ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3451 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3452 | } |
| 3453 | |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3454 | /* |
| 3455 | * Authenticate before decrypt if enabled |
| 3456 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3457 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3458 | if( transform->encrypt_then_mac == MBEDTLS_SSL_ETM_ENABLED ) |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3459 | { |
Hanno Becker | 992b687 | 2017-11-09 18:57:39 +0000 | [diff] [blame] | 3460 | unsigned char mac_expect[MBEDTLS_SSL_MAC_ADD]; |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3461 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3462 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "using encrypt then mac" ) ); |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3463 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3464 | /* Update data_len in tandem with add_data. |
| 3465 | * |
| 3466 | * The subtraction is safe because of the previous check |
| 3467 | * data_len >= minlen + maclen + 1. |
| 3468 | * |
| 3469 | * Afterwards, we know that data + data_len is followed by at |
| 3470 | * least maclen Bytes, which justifies the call to |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 3471 | * mbedtls_platform_memequal() below. |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3472 | * |
| 3473 | * Further, we still know that data_len > minlen */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3474 | rec->data_len -= transform->maclen; |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3475 | ssl_extract_add_data_from_record( add_data, &add_data_len, rec ); |
Manuel Pégourié-Gonnard | 08558e5 | 2014-11-04 14:40:21 +0100 | [diff] [blame] | 3476 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3477 | /* Calculate expected MAC. */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3478 | MBEDTLS_SSL_DEBUG_BUF( 4, "MAC'd meta-data", add_data, |
| 3479 | add_data_len ); |
| 3480 | mbedtls_md_hmac_update( &transform->md_ctx_dec, add_data, |
| 3481 | add_data_len ); |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3482 | mbedtls_md_hmac_update( &transform->md_ctx_dec, |
| 3483 | data, rec->data_len ); |
| 3484 | mbedtls_md_hmac_finish( &transform->md_ctx_dec, mac_expect ); |
| 3485 | mbedtls_md_hmac_reset( &transform->md_ctx_dec ); |
Manuel Pégourié-Gonnard | 08558e5 | 2014-11-04 14:40:21 +0100 | [diff] [blame] | 3486 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3487 | MBEDTLS_SSL_DEBUG_BUF( 4, "message mac", data + rec->data_len, |
| 3488 | transform->maclen ); |
Hanno Becker | 992b687 | 2017-11-09 18:57:39 +0000 | [diff] [blame] | 3489 | MBEDTLS_SSL_DEBUG_BUF( 4, "expected mac", mac_expect, |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3490 | transform->maclen ); |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3491 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3492 | /* Compare expected MAC with MAC at the end of the record. */ |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 3493 | if( mbedtls_platform_memequal( data + rec->data_len, mac_expect, |
| 3494 | transform->maclen ) != 0 ) |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3495 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3496 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "message mac does not match" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3497 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3498 | } |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3499 | auth_done++; |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3500 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3501 | #endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */ |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3502 | |
| 3503 | /* |
| 3504 | * Check length sanity |
| 3505 | */ |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3506 | |
| 3507 | /* We know from above that data_len > minlen >= 0, |
| 3508 | * so the following check in particular implies that |
| 3509 | * data_len >= minlen + ivlen ( = minlen or 2 * minlen ). */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3510 | if( rec->data_len % transform->ivlen != 0 ) |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3511 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3512 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) %% ivlen (%d) != 0", |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3513 | rec->data_len, transform->ivlen ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3514 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3515 | } |
| 3516 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3517 | #if defined(MBEDTLS_SSL_PROTO_TLS1_1) || defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3518 | /* |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 3519 | * Initialize for prepended IV for block cipher in TLS v1.1 and up |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3520 | */ |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3521 | if( mbedtls_ssl_ver_geq( |
| 3522 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3523 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3524 | { |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3525 | /* Safe because data_len >= minlen + ivlen = 2 * ivlen. */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3526 | mbedtls_platform_memcpy( transform->iv_dec, data, transform->ivlen ); |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3527 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3528 | data += transform->ivlen; |
| 3529 | rec->data_offset += transform->ivlen; |
| 3530 | rec->data_len -= transform->ivlen; |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3531 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3532 | #endif /* MBEDTLS_SSL_PROTO_TLS1_1 || MBEDTLS_SSL_PROTO_TLS1_2 */ |
Paul Bakker | 2e11f7d | 2010-07-25 14:24:53 +0000 | [diff] [blame] | 3533 | |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3534 | /* We still have data_len % ivlen == 0 and data_len >= ivlen here. */ |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3535 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3536 | if( ( ret = mbedtls_ssl_switch_key( transform, MBEDTLS_DECRYPT ) ) |
| 3537 | != 0 ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3538 | { |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3539 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_switch_key", ret ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3540 | return( ret ); |
| 3541 | } |
Andrzej Kurek | a793237 | 2020-09-19 07:56:06 +0200 | [diff] [blame] | 3542 | |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3543 | if( ( ret = mbedtls_cipher_crypt( &transform->cipher_ctx, |
| 3544 | transform->iv_dec, transform->ivlen, |
| 3545 | data, rec->data_len, data, &olen ) ) != 0 ) |
| 3546 | { |
| 3547 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
| 3548 | return( ret ); |
| 3549 | } |
| 3550 | #else |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3551 | if( ( ret = mbedtls_cipher_crypt( &transform->cipher_ctx_dec, |
| 3552 | transform->iv_dec, transform->ivlen, |
| 3553 | data, rec->data_len, data, &olen ) ) != 0 ) |
Paul Bakker | 45125bc | 2013-09-04 16:47:11 +0200 | [diff] [blame] | 3554 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3555 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret ); |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3556 | return( ret ); |
| 3557 | } |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3558 | #endif |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3559 | /* Double-check that length hasn't changed during decryption. */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3560 | if( rec->data_len != olen ) |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3561 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3562 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3563 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3564 | } |
Paul Bakker | da02a7f | 2013-08-31 17:25:14 +0200 | [diff] [blame] | 3565 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3566 | #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3567 | if( mbedtls_ssl_ver_lt( |
| 3568 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3569 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3570 | { |
| 3571 | /* |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3572 | * Save IV in SSL3 and TLS1, where CBC decryption of consecutive |
| 3573 | * records is equivalent to CBC decryption of the concatenation |
| 3574 | * of the records; in other words, IVs are maintained across |
| 3575 | * record decryptions. |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3576 | */ |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3577 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 3578 | mbedtls_platform_memcpy( transform->iv_dec, transform->cipher_ctx.iv, |
| 3579 | transform->ivlen ); |
| 3580 | #else |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3581 | mbedtls_platform_memcpy( transform->iv_dec, transform->cipher_ctx_dec.iv, |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3582 | transform->ivlen ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 3583 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3584 | } |
Paul Bakker | cca5b81 | 2013-08-31 17:40:26 +0200 | [diff] [blame] | 3585 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3586 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3587 | /* Safe since data_len >= minlen + maclen + 1, so after having |
| 3588 | * subtracted at most minlen and maclen up to this point, |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3589 | * data_len > 0 (because of data_len % ivlen == 0, it's actually |
| 3590 | * >= ivlen ). */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3591 | padlen = data[rec->data_len - 1]; |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3592 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3593 | if( auth_done == 1 ) |
| 3594 | { |
| 3595 | correct *= ( rec->data_len >= padlen + 1 ); |
| 3596 | padlen *= ( rec->data_len >= padlen + 1 ); |
| 3597 | } |
| 3598 | else |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3599 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3600 | #if defined(MBEDTLS_SSL_DEBUG_ALL) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3601 | if( rec->data_len < transform->maclen + padlen + 1 ) |
| 3602 | { |
| 3603 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) < maclen (%d) + padlen (%d)", |
| 3604 | rec->data_len, |
| 3605 | transform->maclen, |
| 3606 | padlen + 1 ) ); |
| 3607 | } |
Paul Bakker | d66f070 | 2013-01-31 16:57:45 +0100 | [diff] [blame] | 3608 | #endif |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3609 | |
| 3610 | correct *= ( rec->data_len >= transform->maclen + padlen + 1 ); |
| 3611 | padlen *= ( rec->data_len >= transform->maclen + padlen + 1 ); |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3612 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3613 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3614 | padlen++; |
| 3615 | |
| 3616 | /* Regardless of the validity of the padding, |
| 3617 | * we have data_len >= padlen here. */ |
| 3618 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3619 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 0a92b81 | 2019-06-24 15:46:40 +0100 | [diff] [blame] | 3620 | if( mbedtls_ssl_transform_get_minor_ver( transform ) == |
| 3621 | MBEDTLS_SSL_MINOR_VERSION_0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3622 | { |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3623 | if( padlen > transform->ivlen ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3624 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3625 | #if defined(MBEDTLS_SSL_DEBUG_ALL) |
| 3626 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad padding length: is %d, " |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3627 | "should be no more than %d", |
| 3628 | padlen, transform->ivlen ) ); |
Paul Bakker | d66f070 | 2013-01-31 16:57:45 +0100 | [diff] [blame] | 3629 | #endif |
Paul Bakker | 4582999 | 2013-01-03 14:52:21 +0100 | [diff] [blame] | 3630 | correct = 0; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3631 | } |
| 3632 | } |
| 3633 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3634 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 3635 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 3636 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3637 | if( mbedtls_ssl_ver_gt( |
| 3638 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3639 | MBEDTLS_SSL_MINOR_VERSION_0 ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3640 | { |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3641 | /* The padding check involves a series of up to 256 |
| 3642 | * consecutive memory reads at the end of the record |
| 3643 | * plaintext buffer. In order to hide the length and |
| 3644 | * validity of the padding, always perform exactly |
| 3645 | * `min(256,plaintext_len)` reads (but take into account |
| 3646 | * only the last `padlen` bytes for the padding check). */ |
| 3647 | size_t pad_count = 0; |
| 3648 | size_t real_count = 0; |
| 3649 | volatile unsigned char* const check = data; |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3650 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3651 | /* Index of first padding byte; it has been ensured above |
| 3652 | * that the subtraction is safe. */ |
| 3653 | size_t const padding_idx = rec->data_len - padlen; |
| 3654 | size_t const num_checks = rec->data_len <= 256 ? rec->data_len : 256; |
| 3655 | size_t const start_idx = rec->data_len - num_checks; |
| 3656 | size_t idx; |
Paul Bakker | 956c9e0 | 2013-12-19 14:42:28 +0100 | [diff] [blame] | 3657 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3658 | for( idx = start_idx; idx < rec->data_len; idx++ ) |
Paul Bakker | ca9c87e | 2013-09-25 18:52:37 +0200 | [diff] [blame] | 3659 | { |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3660 | real_count |= ( idx >= padding_idx ); |
| 3661 | pad_count += real_count * ( check[idx] == padlen - 1 ); |
Paul Bakker | ca9c87e | 2013-09-25 18:52:37 +0200 | [diff] [blame] | 3662 | } |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3663 | correct &= ( pad_count == padlen ); |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3664 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3665 | #if defined(MBEDTLS_SSL_DEBUG_ALL) |
Paul Bakker | 66d5d07 | 2014-06-17 16:39:18 +0200 | [diff] [blame] | 3666 | if( padlen > 0 && correct == 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3667 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad padding byte detected" ) ); |
Paul Bakker | d66f070 | 2013-01-31 16:57:45 +0100 | [diff] [blame] | 3668 | #endif |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3669 | padlen &= correct * 0x1FF; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3670 | } |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 3671 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3672 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || \ |
| 3673 | MBEDTLS_SSL_PROTO_TLS1_2 */ |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 3674 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3675 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3676 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 3677 | } |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3678 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3679 | /* If the padding was found to be invalid, padlen == 0 |
| 3680 | * and the subtraction is safe. If the padding was found valid, |
| 3681 | * padlen hasn't been changed and the previous assertion |
| 3682 | * data_len >= padlen still holds. */ |
| 3683 | rec->data_len -= padlen; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3684 | } |
Manuel Pégourié-Gonnard | f7dc378 | 2013-09-13 14:10:44 +0200 | [diff] [blame] | 3685 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3686 | #endif /* MBEDTLS_CIPHER_MODE_CBC && |
Markku-Juhani O. Saarinen | c06e101 | 2017-12-07 11:51:13 +0000 | [diff] [blame] | 3687 | ( MBEDTLS_AES_C || MBEDTLS_CAMELLIA_C || MBEDTLS_ARIA_C ) */ |
Manuel Pégourié-Gonnard | f7dc378 | 2013-09-13 14:10:44 +0200 | [diff] [blame] | 3688 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3689 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3690 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | f7dc378 | 2013-09-13 14:10:44 +0200 | [diff] [blame] | 3691 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3692 | |
Manuel Pégourié-Gonnard | 6a25cfa | 2018-07-10 11:15:36 +0200 | [diff] [blame] | 3693 | #if defined(MBEDTLS_SSL_DEBUG_ALL) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3694 | MBEDTLS_SSL_DEBUG_BUF( 4, "raw buffer after decryption", |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3695 | data, rec->data_len ); |
Manuel Pégourié-Gonnard | 6a25cfa | 2018-07-10 11:15:36 +0200 | [diff] [blame] | 3696 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3697 | |
| 3698 | /* |
Manuel Pégourié-Gonnard | 313d796 | 2014-10-29 12:07:57 +0100 | [diff] [blame] | 3699 | * Authenticate if not done yet. |
| 3700 | * Compute the MAC regardless of the padding result (RFC4346, CBCTIME). |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3701 | */ |
Hanno Becker | 5cc04d5 | 2018-01-03 15:24:20 +0000 | [diff] [blame] | 3702 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3703 | if( auth_done == 0 ) |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3704 | { |
Hanno Becker | 992b687 | 2017-11-09 18:57:39 +0000 | [diff] [blame] | 3705 | unsigned char mac_expect[MBEDTLS_SSL_MAC_ADD]; |
Paul Bakker | 1e5369c | 2013-12-19 16:40:57 +0100 | [diff] [blame] | 3706 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3707 | /* If the initial value of padlen was such that |
| 3708 | * data_len < maclen + padlen + 1, then padlen |
| 3709 | * got reset to 1, and the initial check |
| 3710 | * data_len >= minlen + maclen + 1 |
| 3711 | * guarantees that at this point we still |
| 3712 | * have at least data_len >= maclen. |
| 3713 | * |
| 3714 | * If the initial value of padlen was such that |
| 3715 | * data_len >= maclen + padlen + 1, then we have |
| 3716 | * subtracted either padlen + 1 (if the padding was correct) |
| 3717 | * or 0 (if the padding was incorrect) since then, |
| 3718 | * hence data_len >= maclen in any case. |
| 3719 | */ |
| 3720 | rec->data_len -= transform->maclen; |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3721 | ssl_extract_add_data_from_record( add_data, &add_data_len, rec ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3722 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3723 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 0a92b81 | 2019-06-24 15:46:40 +0100 | [diff] [blame] | 3724 | if( mbedtls_ssl_transform_get_minor_ver( transform ) == |
| 3725 | MBEDTLS_SSL_MINOR_VERSION_0 ) |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3726 | { |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3727 | ssl_mac( &transform->md_ctx_dec, |
| 3728 | transform->mac_dec, |
| 3729 | data, rec->data_len, |
| 3730 | rec->ctr, rec->type, |
| 3731 | mac_expect ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3732 | } |
| 3733 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3734 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 3735 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 3736 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 3737 | if( mbedtls_ssl_ver_gt( |
| 3738 | mbedtls_ssl_transform_get_minor_ver( transform ), |
| 3739 | MBEDTLS_SSL_MINOR_VERSION_0 ) ) |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3740 | { |
| 3741 | /* |
| 3742 | * Process MAC and always update for padlen afterwards to make |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3743 | * total time independent of padlen. |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3744 | * |
| 3745 | * Known timing attacks: |
| 3746 | * - Lucky Thirteen (http://www.isg.rhul.ac.uk/tls/TLStiming.pdf) |
| 3747 | * |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3748 | * To compensate for different timings for the MAC calculation |
| 3749 | * depending on how much padding was removed (which is determined |
| 3750 | * by padlen), process extra_run more blocks through the hash |
| 3751 | * function. |
| 3752 | * |
| 3753 | * The formula in the paper is |
| 3754 | * extra_run = ceil( (L1-55) / 64 ) - ceil( (L2-55) / 64 ) |
| 3755 | * where L1 is the size of the header plus the decrypted message |
| 3756 | * plus CBC padding and L2 is the size of the header plus the |
| 3757 | * decrypted message. This is for an underlying hash function |
| 3758 | * with 64-byte blocks. |
| 3759 | * We use ( (Lx+8) / 64 ) to handle 'negative Lx' values |
| 3760 | * correctly. We round down instead of up, so -56 is the correct |
| 3761 | * value for our calculations instead of -55. |
| 3762 | * |
Gilles Peskine | 1bd9d58 | 2018-06-04 11:58:44 +0200 | [diff] [blame] | 3763 | * Repeat the formula rather than defining a block_size variable. |
| 3764 | * This avoids requiring division by a variable at runtime |
| 3765 | * (which would be marginally less efficient and would require |
| 3766 | * linking an extra division function in some builds). |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3767 | */ |
| 3768 | size_t j, extra_run = 0; |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3769 | unsigned char tmp[MBEDTLS_MD_MAX_BLOCK_SIZE]; |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3770 | |
| 3771 | /* |
| 3772 | * The next two sizes are the minimum and maximum values of |
| 3773 | * in_msglen over all padlen values. |
| 3774 | * |
| 3775 | * They're independent of padlen, since we previously did |
Hanno Becker | 6d3db0f | 2019-07-10 13:55:25 +0100 | [diff] [blame] | 3776 | * data_len -= padlen. |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3777 | * |
| 3778 | * Note that max_len + maclen is never more than the buffer |
| 3779 | * length, as we previously did in_msglen -= maclen too. |
| 3780 | */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3781 | const size_t max_len = rec->data_len + padlen; |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3782 | const size_t min_len = ( max_len > 256 ) ? max_len - 256 : 0; |
| 3783 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3784 | memset( tmp, 0, sizeof( tmp ) ); |
| 3785 | |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 3786 | switch( mbedtls_md_get_type( |
| 3787 | mbedtls_md_get_handle( &transform->md_ctx_dec ) ) ) |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3788 | { |
Gilles Peskine | d0e55a4 | 2018-06-04 12:03:30 +0200 | [diff] [blame] | 3789 | #if defined(MBEDTLS_MD5_C) || defined(MBEDTLS_SHA1_C) || \ |
| 3790 | defined(MBEDTLS_SHA256_C) |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3791 | case MBEDTLS_MD_MD5: |
| 3792 | case MBEDTLS_MD_SHA1: |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3793 | case MBEDTLS_MD_SHA256: |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3794 | /* 8 bytes of message size, 64-byte compression blocks */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3795 | extra_run = |
| 3796 | ( add_data_len + rec->data_len + padlen + 8 ) / 64 - |
| 3797 | ( add_data_len + rec->data_len + 8 ) / 64; |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3798 | break; |
| 3799 | #endif |
Gilles Peskine | a7fe25d | 2018-06-04 12:01:18 +0200 | [diff] [blame] | 3800 | #if defined(MBEDTLS_SHA512_C) |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3801 | case MBEDTLS_MD_SHA384: |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3802 | /* 16 bytes of message size, 128-byte compression blocks */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3803 | extra_run = |
| 3804 | ( add_data_len + rec->data_len + padlen + 16 ) / 128 - |
| 3805 | ( add_data_len + rec->data_len + 16 ) / 128; |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3806 | break; |
| 3807 | #endif |
| 3808 | default: |
Gilles Peskine | 5c38984 | 2018-06-04 12:02:43 +0200 | [diff] [blame] | 3809 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
Gilles Peskine | 20b4408 | 2018-05-29 14:06:49 +0200 | [diff] [blame] | 3810 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 3811 | } |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3812 | |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3813 | extra_run &= correct * 0xFF; |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3814 | |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 3815 | mbedtls_md_hmac_update( &transform->md_ctx_dec, add_data, |
| 3816 | add_data_len ); |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3817 | mbedtls_md_hmac_update( &transform->md_ctx_dec, data, |
| 3818 | rec->data_len ); |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3819 | /* Make sure we access everything even when padlen > 0. This |
| 3820 | * makes the synchronisation requirements for just-in-time |
| 3821 | * Prime+Probe attacks much tighter and hopefully impractical. */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3822 | ssl_read_memory( data + rec->data_len, padlen ); |
| 3823 | mbedtls_md_hmac_finish( &transform->md_ctx_dec, mac_expect ); |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3824 | |
| 3825 | /* Call mbedtls_md_process at least once due to cache attacks |
| 3826 | * that observe whether md_process() was called of not */ |
Manuel Pégourié-Gonnard | 47fede0 | 2015-04-29 01:35:48 +0200 | [diff] [blame] | 3827 | for( j = 0; j < extra_run + 1; j++ ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3828 | mbedtls_md_process( &transform->md_ctx_dec, tmp ); |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3829 | |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3830 | mbedtls_md_hmac_reset( &transform->md_ctx_dec ); |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3831 | |
| 3832 | /* Make sure we access all the memory that could contain the MAC, |
| 3833 | * before we check it in the next code block. This makes the |
| 3834 | * synchronisation requirements for just-in-time Prime+Probe |
| 3835 | * attacks much tighter and hopefully impractical. */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3836 | ssl_read_memory( data + min_len, |
| 3837 | max_len - min_len + transform->maclen ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3838 | } |
| 3839 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3840 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || \ |
| 3841 | MBEDTLS_SSL_PROTO_TLS1_2 */ |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3842 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3843 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3844 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3845 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3846 | |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3847 | #if defined(MBEDTLS_SSL_DEBUG_ALL) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 3848 | MBEDTLS_SSL_DEBUG_BUF( 4, "expected mac", mac_expect, transform->maclen ); |
| 3849 | MBEDTLS_SSL_DEBUG_BUF( 4, "message mac", data + rec->data_len, transform->maclen ); |
Manuel Pégourié-Gonnard | 7b42030 | 2018-06-28 10:38:35 +0200 | [diff] [blame] | 3850 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3851 | |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 3852 | if( mbedtls_platform_memequal( data + rec->data_len, mac_expect, |
| 3853 | transform->maclen ) != 0 ) |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3854 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3855 | #if defined(MBEDTLS_SSL_DEBUG_ALL) |
| 3856 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "message mac does not match" ) ); |
Paul Bakker | e47b34b | 2013-02-27 14:48:00 +0100 | [diff] [blame] | 3857 | #endif |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3858 | correct = 0; |
| 3859 | } |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3860 | auth_done++; |
Manuel Pégourié-Gonnard | 7109624 | 2013-10-25 19:31:25 +0200 | [diff] [blame] | 3861 | } |
Hanno Becker | dd3ab13 | 2018-10-17 14:43:14 +0100 | [diff] [blame] | 3862 | |
| 3863 | /* |
| 3864 | * Finally check the correct flag |
| 3865 | */ |
| 3866 | if( correct == 0 ) |
| 3867 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Hanno Becker | 5cc04d5 | 2018-01-03 15:24:20 +0000 | [diff] [blame] | 3868 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3869 | |
| 3870 | /* Make extra sure authentication was performed, exactly once */ |
| 3871 | if( auth_done != 1 ) |
| 3872 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3873 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 3874 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 352143f | 2015-01-13 10:59:51 +0100 | [diff] [blame] | 3875 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3876 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 3877 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 3878 | if( rec->cid_len != 0 ) |
| 3879 | { |
| 3880 | ret = ssl_cid_parse_inner_plaintext( data, &rec->data_len, |
| 3881 | &rec->type ); |
| 3882 | if( ret != 0 ) |
| 3883 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 3884 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 3885 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 92c930f | 2019-04-29 17:31:37 +0100 | [diff] [blame] | 3886 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3887 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= decrypt buf" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3888 | |
| 3889 | return( 0 ); |
| 3890 | } |
| 3891 | |
Manuel Pégourié-Gonnard | 0098e7d | 2014-10-28 13:08:59 +0100 | [diff] [blame] | 3892 | #undef MAC_NONE |
| 3893 | #undef MAC_PLAINTEXT |
| 3894 | #undef MAC_CIPHERTEXT |
| 3895 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3896 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3897 | /* |
| 3898 | * Compression/decompression functions |
| 3899 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3900 | static int ssl_compress_buf( mbedtls_ssl_context *ssl ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3901 | { |
| 3902 | int ret; |
| 3903 | unsigned char *msg_post = ssl->out_msg; |
Andrzej Kurek | 5462e02 | 2018-04-20 07:58:53 -0400 | [diff] [blame] | 3904 | ptrdiff_t bytes_written = ssl->out_msg - ssl->out_buf; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3905 | size_t len_pre = ssl->out_msglen; |
Paul Bakker | 1677033 | 2013-10-11 09:59:44 +0200 | [diff] [blame] | 3906 | unsigned char *msg_pre = ssl->compress_buf; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 3907 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 3908 | size_t out_buf_len = ssl->out_buf_len; |
| 3909 | #else |
| 3910 | size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN; |
| 3911 | #endif |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3912 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3913 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> compress buf" ) ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3914 | |
Paul Bakker | abf2f8f | 2013-06-30 14:57:46 +0200 | [diff] [blame] | 3915 | if( len_pre == 0 ) |
| 3916 | return( 0 ); |
| 3917 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3918 | mbedtls_platform_memcpy( msg_pre, ssl->out_msg, len_pre ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3919 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3920 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "before compression: msglen = %d, ", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3921 | ssl->out_msglen ) ); |
| 3922 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3923 | MBEDTLS_SSL_DEBUG_BUF( 4, "before compression: output payload", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3924 | ssl->out_msg, ssl->out_msglen ); |
| 3925 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 3926 | ssl->transform_out->ctx_deflate.next_in = msg_pre; |
| 3927 | ssl->transform_out->ctx_deflate.avail_in = len_pre; |
| 3928 | ssl->transform_out->ctx_deflate.next_out = msg_post; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 3929 | ssl->transform_out->ctx_deflate.avail_out = out_buf_len - bytes_written; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3930 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 3931 | ret = deflate( &ssl->transform_out->ctx_deflate, Z_SYNC_FLUSH ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3932 | if( ret != Z_OK ) |
| 3933 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3934 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "failed to perform compression (%d)", ret ) ); |
| 3935 | return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3936 | } |
| 3937 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 3938 | ssl->out_msglen = out_buf_len - |
Andrzej Kurek | 5462e02 | 2018-04-20 07:58:53 -0400 | [diff] [blame] | 3939 | ssl->transform_out->ctx_deflate.avail_out - bytes_written; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3940 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3941 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "after compression: msglen = %d, ", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3942 | ssl->out_msglen ) ); |
| 3943 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3944 | MBEDTLS_SSL_DEBUG_BUF( 4, "after compression: output payload", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3945 | ssl->out_msg, ssl->out_msglen ); |
| 3946 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3947 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= compress buf" ) ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3948 | |
| 3949 | return( 0 ); |
| 3950 | } |
| 3951 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3952 | static int ssl_decompress_buf( mbedtls_ssl_context *ssl ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3953 | { |
| 3954 | int ret; |
| 3955 | unsigned char *msg_post = ssl->in_msg; |
Andrzej Kurek | a9ceef8 | 2018-04-24 06:32:44 -0400 | [diff] [blame] | 3956 | ptrdiff_t header_bytes = ssl->in_msg - ssl->in_buf; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3957 | size_t len_pre = ssl->in_msglen; |
Paul Bakker | 1677033 | 2013-10-11 09:59:44 +0200 | [diff] [blame] | 3958 | unsigned char *msg_pre = ssl->compress_buf; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 3959 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 3960 | size_t in_buf_len = ssl->in_buf_len; |
| 3961 | #else |
| 3962 | size_t in_buf_len = MBEDTLS_SSL_IN_BUFFER_LEN; |
| 3963 | #endif |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3964 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3965 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> decompress buf" ) ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3966 | |
Paul Bakker | abf2f8f | 2013-06-30 14:57:46 +0200 | [diff] [blame] | 3967 | if( len_pre == 0 ) |
| 3968 | return( 0 ); |
| 3969 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 3970 | mbedtls_platform_memcpy( msg_pre, ssl->in_msg, len_pre ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3971 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3972 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "before decompression: msglen = %d, ", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3973 | ssl->in_msglen ) ); |
| 3974 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3975 | MBEDTLS_SSL_DEBUG_BUF( 4, "before decompression: input payload", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3976 | ssl->in_msg, ssl->in_msglen ); |
| 3977 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 3978 | ssl->transform_in->ctx_inflate.next_in = msg_pre; |
| 3979 | ssl->transform_in->ctx_inflate.avail_in = len_pre; |
| 3980 | ssl->transform_in->ctx_inflate.next_out = msg_post; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 3981 | ssl->transform_in->ctx_inflate.avail_out = in_buf_len - |
Andrzej Kurek | a9ceef8 | 2018-04-24 06:32:44 -0400 | [diff] [blame] | 3982 | header_bytes; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3983 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 3984 | ret = inflate( &ssl->transform_in->ctx_inflate, Z_SYNC_FLUSH ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3985 | if( ret != Z_OK ) |
| 3986 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3987 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "failed to perform decompression (%d)", ret ) ); |
| 3988 | return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3989 | } |
| 3990 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 3991 | ssl->in_msglen = in_buf_len - |
Andrzej Kurek | a9ceef8 | 2018-04-24 06:32:44 -0400 | [diff] [blame] | 3992 | ssl->transform_in->ctx_inflate.avail_out - header_bytes; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3993 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3994 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "after decompression: msglen = %d, ", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3995 | ssl->in_msglen ) ); |
| 3996 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 3997 | MBEDTLS_SSL_DEBUG_BUF( 4, "after decompression: input payload", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 3998 | ssl->in_msg, ssl->in_msglen ); |
| 3999 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4000 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= decompress buf" ) ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 4001 | |
| 4002 | return( 0 ); |
| 4003 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4004 | #endif /* MBEDTLS_ZLIB_SUPPORT */ |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 4005 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4006 | #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION) |
| 4007 | static int ssl_write_hello_request( mbedtls_ssl_context *ssl ); |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 4008 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4009 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 4010 | static int ssl_resend_hello_request( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 4011 | { |
| 4012 | /* If renegotiation is not enforced, retransmit until we would reach max |
| 4013 | * timeout if we were using the usual handshake doubling scheme */ |
Manuel Pégourié-Gonnard | 7ca4e4d | 2015-05-04 10:55:58 +0200 | [diff] [blame] | 4014 | if( ssl->conf->renego_max_records < 0 ) |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 4015 | { |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 4016 | uint32_t ratio = |
| 4017 | mbedtls_ssl_conf_get_hs_timeout_max( ssl->conf ) / |
| 4018 | mbedtls_ssl_conf_get_hs_timeout_min( ssl->conf ) + 1; |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 4019 | unsigned char doublings = 1; |
| 4020 | |
| 4021 | while( ratio != 0 ) |
| 4022 | { |
| 4023 | ++doublings; |
| 4024 | ratio >>= 1; |
| 4025 | } |
| 4026 | |
| 4027 | if( ++ssl->renego_records_seen > doublings ) |
| 4028 | { |
Manuel Pégourié-Gonnard | cb0d212 | 2015-07-22 11:52:11 +0200 | [diff] [blame] | 4029 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "no longer retransmitting hello request" ) ); |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 4030 | return( 0 ); |
| 4031 | } |
| 4032 | } |
| 4033 | |
| 4034 | return( ssl_write_hello_request( ssl ) ); |
| 4035 | } |
| 4036 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4037 | #endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_RENEGOTIATION */ |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 4038 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4039 | /* |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4040 | * Fill the input message buffer by appending data to it. |
| 4041 | * The amount of data already fetched is in ssl->in_left. |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4042 | * |
| 4043 | * If we return 0, is it guaranteed that (at least) nb_want bytes are |
| 4044 | * available (from this read and/or a previous one). Otherwise, an error code |
| 4045 | * is returned (possibly EOF or WANT_READ). |
| 4046 | * |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4047 | * With stream transport (TLS) on success ssl->in_left == nb_want, but |
| 4048 | * with datagram transport (DTLS) on success ssl->in_left >= nb_want, |
| 4049 | * since we always read a whole datagram at once. |
| 4050 | * |
Manuel Pégourié-Gonnard | 64dffc5 | 2014-09-02 13:39:16 +0200 | [diff] [blame] | 4051 | * For DTLS, it is up to the caller to set ssl->next_record_offset when |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4052 | * they're done reading a record. |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4053 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4054 | int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4055 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 4056 | int ret; |
| 4057 | size_t len; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 4058 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 4059 | size_t in_buf_len = ssl->in_buf_len; |
| 4060 | #else |
| 4061 | size_t in_buf_len = MBEDTLS_SSL_IN_BUFFER_LEN; |
| 4062 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4063 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4064 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> fetch input" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4065 | |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4066 | if( mbedtls_ssl_get_recv( ssl ) == NULL && |
| 4067 | mbedtls_ssl_get_recv_timeout( ssl ) == NULL ) |
Manuel Pégourié-Gonnard | e6bdc44 | 2014-09-17 11:34:57 +0200 | [diff] [blame] | 4068 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4069 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Bad usage of mbedtls_ssl_set_bio() " |
Manuel Pégourié-Gonnard | 1b511f9 | 2015-05-06 15:54:23 +0100 | [diff] [blame] | 4070 | "or mbedtls_ssl_set_bio()" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4071 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | e6bdc44 | 2014-09-17 11:34:57 +0200 | [diff] [blame] | 4072 | } |
| 4073 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 4074 | if( nb_want > in_buf_len - (size_t)( ssl->in_hdr - ssl->in_buf ) ) |
Paul Bakker | 1a1fbba | 2014-04-30 14:38:05 +0200 | [diff] [blame] | 4075 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4076 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "requesting more data than fits" ) ); |
| 4077 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Paul Bakker | 1a1fbba | 2014-04-30 14:38:05 +0200 | [diff] [blame] | 4078 | } |
| 4079 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4080 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 25838b7 | 2019-03-19 10:23:56 +0100 | [diff] [blame] | 4081 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4082 | { |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 4083 | uint32_t timeout; |
| 4084 | |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 4085 | /* Just to be sure */ |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 4086 | if( mbedtls_ssl_get_set_timer( ssl ) == NULL || |
| 4087 | mbedtls_ssl_get_get_timer( ssl ) == NULL ) |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 4088 | { |
| 4089 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "You must use " |
| 4090 | "mbedtls_ssl_set_timer_cb() for DTLS" ) ); |
| 4091 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 4092 | } |
| 4093 | |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4094 | /* |
| 4095 | * The point is, we need to always read a full datagram at once, so we |
| 4096 | * sometimes read more then requested, and handle the additional data. |
| 4097 | * It could be the rest of the current record (while fetching the |
| 4098 | * header) and/or some other records in the same datagram. |
| 4099 | */ |
| 4100 | |
| 4101 | /* |
| 4102 | * Move to the next record in the already read datagram if applicable |
| 4103 | */ |
| 4104 | if( ssl->next_record_offset != 0 ) |
| 4105 | { |
| 4106 | if( ssl->in_left < ssl->next_record_offset ) |
| 4107 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4108 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 4109 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4110 | } |
| 4111 | |
| 4112 | ssl->in_left -= ssl->next_record_offset; |
| 4113 | |
| 4114 | if( ssl->in_left != 0 ) |
| 4115 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4116 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "next record in same datagram, offset: %d", |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4117 | ssl->next_record_offset ) ); |
| 4118 | memmove( ssl->in_hdr, |
| 4119 | ssl->in_hdr + ssl->next_record_offset, |
| 4120 | ssl->in_left ); |
| 4121 | } |
| 4122 | |
| 4123 | ssl->next_record_offset = 0; |
| 4124 | } |
| 4125 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4126 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "in_left: %d, nb_want: %d", |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4127 | ssl->in_left, nb_want ) ); |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4128 | |
| 4129 | /* |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4130 | * Done if we already have enough data. |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4131 | */ |
| 4132 | if( nb_want <= ssl->in_left) |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 4133 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4134 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= fetch input" ) ); |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4135 | return( 0 ); |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 4136 | } |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4137 | |
| 4138 | /* |
Antonin Décimo | d5f4759 | 2019-01-23 15:24:37 +0100 | [diff] [blame] | 4139 | * A record can't be split across datagrams. If we need to read but |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4140 | * are not at the beginning of a new record, the caller did something |
| 4141 | * wrong. |
| 4142 | */ |
| 4143 | if( ssl->in_left != 0 ) |
| 4144 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4145 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 4146 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4147 | } |
| 4148 | |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4149 | /* |
| 4150 | * Don't even try to read if time's out already. |
| 4151 | * This avoids by-passing the timer when repeatedly receiving messages |
| 4152 | * that will end up being dropped. |
| 4153 | */ |
| 4154 | if( ssl_check_timer( ssl ) != 0 ) |
Hanno Becker | e65ce78 | 2017-05-22 14:47:48 +0100 | [diff] [blame] | 4155 | { |
| 4156 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "timer has expired" ) ); |
Manuel Pégourié-Gonnard | 8836994 | 2015-05-06 16:19:31 +0100 | [diff] [blame] | 4157 | ret = MBEDTLS_ERR_SSL_TIMEOUT; |
Hanno Becker | e65ce78 | 2017-05-22 14:47:48 +0100 | [diff] [blame] | 4158 | } |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 4159 | else |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 4160 | { |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 4161 | len = in_buf_len - ( ssl->in_hdr - ssl->in_buf ); |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4162 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4163 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4164 | timeout = ssl->handshake->retransmit_timeout; |
| 4165 | else |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 4166 | timeout = mbedtls_ssl_conf_get_read_timeout( ssl->conf ); |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4167 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4168 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "f_recv_timeout: %u ms", timeout ) ); |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4169 | |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4170 | if( mbedtls_ssl_get_recv_timeout( ssl ) != NULL ) |
| 4171 | { |
| 4172 | ret = mbedtls_ssl_get_recv_timeout( ssl ) |
| 4173 | ( ssl->p_bio, ssl->in_hdr, len, timeout ); |
| 4174 | } |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4175 | else |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4176 | { |
| 4177 | ret = mbedtls_ssl_get_recv( ssl ) |
| 4178 | ( ssl->p_bio, ssl->in_hdr, len ); |
| 4179 | } |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4180 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4181 | MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_recv(_timeout)", ret ); |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4182 | |
| 4183 | if( ret == 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4184 | return( MBEDTLS_ERR_SSL_CONN_EOF ); |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4185 | } |
| 4186 | |
Manuel Pégourié-Gonnard | 8836994 | 2015-05-06 16:19:31 +0100 | [diff] [blame] | 4187 | if( ret == MBEDTLS_ERR_SSL_TIMEOUT ) |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4188 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4189 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "timeout" ) ); |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4190 | ssl_set_timer( ssl, 0 ); |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 4191 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4192 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 4193 | { |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 4194 | if( ssl_double_retransmit_timeout( ssl ) != 0 ) |
| 4195 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4196 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake timeout" ) ); |
Manuel Pégourié-Gonnard | 8836994 | 2015-05-06 16:19:31 +0100 | [diff] [blame] | 4197 | return( MBEDTLS_ERR_SSL_TIMEOUT ); |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 4198 | } |
| 4199 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4200 | if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 4201 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4202 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_resend", ret ); |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 4203 | return( ret ); |
| 4204 | } |
| 4205 | |
Manuel Pégourié-Gonnard | 8836994 | 2015-05-06 16:19:31 +0100 | [diff] [blame] | 4206 | return( MBEDTLS_ERR_SSL_WANT_READ ); |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 4207 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4208 | #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 4209 | else if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 4210 | MBEDTLS_SSL_IS_SERVER && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4211 | ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING ) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 4212 | { |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 4213 | if( ( ret = ssl_resend_hello_request( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 4214 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4215 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_resend_hello_request", ret ); |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 4216 | return( ret ); |
| 4217 | } |
| 4218 | |
Manuel Pégourié-Gonnard | 8836994 | 2015-05-06 16:19:31 +0100 | [diff] [blame] | 4219 | return( MBEDTLS_ERR_SSL_WANT_READ ); |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 4220 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4221 | #endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_RENEGOTIATION */ |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 4222 | } |
| 4223 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4224 | if( ret < 0 ) |
| 4225 | return( ret ); |
| 4226 | |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4227 | ssl->in_left = ret; |
| 4228 | } |
Manuel Pégourié-Gonnard | 25838b7 | 2019-03-19 10:23:56 +0100 | [diff] [blame] | 4229 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 4230 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 4231 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4232 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4233 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "in_left: %d, nb_want: %d", |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 4234 | ssl->in_left, nb_want ) ); |
| 4235 | |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4236 | while( ssl->in_left < nb_want ) |
| 4237 | { |
| 4238 | len = nb_want - ssl->in_left; |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 4239 | |
| 4240 | if( ssl_check_timer( ssl ) != 0 ) |
| 4241 | ret = MBEDTLS_ERR_SSL_TIMEOUT; |
| 4242 | else |
Manuel Pégourié-Gonnard | 0761733 | 2015-06-24 23:00:03 +0200 | [diff] [blame] | 4243 | { |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4244 | if( mbedtls_ssl_get_recv_timeout( ssl ) != NULL ) |
Manuel Pégourié-Gonnard | 0761733 | 2015-06-24 23:00:03 +0200 | [diff] [blame] | 4245 | { |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4246 | ret = mbedtls_ssl_get_recv_timeout( ssl )( ssl->p_bio, |
| 4247 | ssl->in_hdr + ssl->in_left, len, |
| 4248 | mbedtls_ssl_conf_get_read_timeout( ssl->conf ) ); |
Manuel Pégourié-Gonnard | 0761733 | 2015-06-24 23:00:03 +0200 | [diff] [blame] | 4249 | } |
| 4250 | else |
| 4251 | { |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4252 | ret = mbedtls_ssl_get_recv( ssl )( ssl->p_bio, |
Manuel Pégourié-Gonnard | 0761733 | 2015-06-24 23:00:03 +0200 | [diff] [blame] | 4253 | ssl->in_hdr + ssl->in_left, len ); |
| 4254 | } |
| 4255 | } |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4256 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4257 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "in_left: %d, nb_want: %d", |
Manuel Pégourié-Gonnard | 0761733 | 2015-06-24 23:00:03 +0200 | [diff] [blame] | 4258 | ssl->in_left, nb_want ) ); |
| 4259 | MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_recv(_timeout)", ret ); |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4260 | |
| 4261 | if( ret == 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4262 | return( MBEDTLS_ERR_SSL_CONN_EOF ); |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4263 | |
| 4264 | if( ret < 0 ) |
| 4265 | return( ret ); |
| 4266 | |
mohammad1603 | 52aecb9 | 2018-03-28 23:41:40 -0700 | [diff] [blame] | 4267 | if ( (size_t)ret > len || ( INT_MAX > SIZE_MAX && ret > SIZE_MAX ) ) |
mohammad1603 | 5bd15cb | 2018-02-28 04:30:59 -0800 | [diff] [blame] | 4268 | { |
Darryl Green | 11999bb | 2018-03-13 15:22:58 +0000 | [diff] [blame] | 4269 | MBEDTLS_SSL_DEBUG_MSG( 1, |
| 4270 | ( "f_recv returned %d bytes but only %lu were requested", |
mohammad1603 | 19d392b | 2018-04-02 07:25:26 -0700 | [diff] [blame] | 4271 | ret, (unsigned long)len ) ); |
mohammad1603 | 5bd15cb | 2018-02-28 04:30:59 -0800 | [diff] [blame] | 4272 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 4273 | } |
| 4274 | |
Manuel Pégourié-Gonnard | fe98ace | 2014-03-24 13:13:01 +0100 | [diff] [blame] | 4275 | ssl->in_left += ret; |
| 4276 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4277 | } |
Manuel Pégourié-Gonnard | 25838b7 | 2019-03-19 10:23:56 +0100 | [diff] [blame] | 4278 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4279 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4280 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= fetch input" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4281 | |
| 4282 | return( 0 ); |
| 4283 | } |
| 4284 | |
| 4285 | /* |
| 4286 | * Flush any data not yet written |
| 4287 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4288 | int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4289 | { |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 4290 | int ret; |
Hanno Becker | 0448462 | 2018-08-06 09:49:38 +0100 | [diff] [blame] | 4291 | unsigned char *buf; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4292 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4293 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> flush output" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4294 | |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4295 | if( mbedtls_ssl_get_send( ssl ) == NULL ) |
Manuel Pégourié-Gonnard | e6bdc44 | 2014-09-17 11:34:57 +0200 | [diff] [blame] | 4296 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4297 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Bad usage of mbedtls_ssl_set_bio() " |
Manuel Pégourié-Gonnard | 1b511f9 | 2015-05-06 15:54:23 +0100 | [diff] [blame] | 4298 | "or mbedtls_ssl_set_bio()" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4299 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | e6bdc44 | 2014-09-17 11:34:57 +0200 | [diff] [blame] | 4300 | } |
| 4301 | |
Manuel Pégourié-Gonnard | 0619348 | 2014-02-14 08:39:32 +0100 | [diff] [blame] | 4302 | /* Avoid incrementing counter if data is flushed */ |
| 4303 | if( ssl->out_left == 0 ) |
| 4304 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4305 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= flush output" ) ); |
Manuel Pégourié-Gonnard | 0619348 | 2014-02-14 08:39:32 +0100 | [diff] [blame] | 4306 | return( 0 ); |
| 4307 | } |
| 4308 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4309 | while( ssl->out_left > 0 ) |
| 4310 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4311 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "message length: %d, out_left: %d", |
Hanno Becker | 4339576 | 2019-05-03 14:46:38 +0100 | [diff] [blame] | 4312 | mbedtls_ssl_out_hdr_len( ssl ) + ssl->out_msglen, ssl->out_left ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4313 | |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4314 | buf = ssl->out_hdr - ssl->out_left; |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 4315 | ret = mbedtls_ssl_get_send( ssl )( ssl->p_bio, buf, ssl->out_left ); |
Paul Bakker | 186751d | 2012-05-08 13:16:14 +0000 | [diff] [blame] | 4316 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4317 | MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_send", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4318 | |
| 4319 | if( ret <= 0 ) |
| 4320 | return( ret ); |
| 4321 | |
mohammad1603 | 52aecb9 | 2018-03-28 23:41:40 -0700 | [diff] [blame] | 4322 | if( (size_t)ret > ssl->out_left || ( INT_MAX > SIZE_MAX && ret > SIZE_MAX ) ) |
mohammad1603 | 4bbaeb4 | 2018-02-22 04:29:04 -0800 | [diff] [blame] | 4323 | { |
Darryl Green | 11999bb | 2018-03-13 15:22:58 +0000 | [diff] [blame] | 4324 | MBEDTLS_SSL_DEBUG_MSG( 1, |
| 4325 | ( "f_send returned %d bytes but only %lu bytes were sent", |
mohammad1603 | 19d392b | 2018-04-02 07:25:26 -0700 | [diff] [blame] | 4326 | ret, (unsigned long)ssl->out_left ) ); |
mohammad1603 | 4bbaeb4 | 2018-02-22 04:29:04 -0800 | [diff] [blame] | 4327 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 4328 | } |
| 4329 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4330 | ssl->out_left -= ret; |
| 4331 | } |
| 4332 | |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4333 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 4334 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 0619348 | 2014-02-14 08:39:32 +0100 | [diff] [blame] | 4335 | { |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4336 | ssl->out_hdr = ssl->out_buf; |
Manuel Pégourié-Gonnard | 0619348 | 2014-02-14 08:39:32 +0100 | [diff] [blame] | 4337 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 4338 | MBEDTLS_SSL_TRANSPORT_ELSE |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4339 | #endif |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 4340 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4341 | { |
| 4342 | ssl->out_hdr = ssl->out_buf + 8; |
| 4343 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 4344 | #endif |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4345 | ssl_update_out_pointers( ssl, ssl->transform_out ); |
Manuel Pégourié-Gonnard | 0619348 | 2014-02-14 08:39:32 +0100 | [diff] [blame] | 4346 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4347 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= flush output" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4348 | |
| 4349 | return( 0 ); |
| 4350 | } |
| 4351 | |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4352 | /* |
| 4353 | * Functions to handle the DTLS retransmission state machine |
| 4354 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4355 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4356 | /* |
| 4357 | * Append current handshake message to current outgoing flight |
| 4358 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4359 | static int ssl_flight_append( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4360 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4361 | mbedtls_ssl_flight_item *msg; |
Hanno Becker | 3b23590 | 2018-08-06 09:54:53 +0100 | [diff] [blame] | 4362 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_flight_append" ) ); |
| 4363 | MBEDTLS_SSL_DEBUG_BUF( 4, "message appended to flight", |
| 4364 | ssl->out_msg, ssl->out_msglen ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4365 | |
| 4366 | /* Allocate space for current message */ |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 4367 | if( ( msg = mbedtls_calloc( 1, sizeof( mbedtls_ssl_flight_item ) ) ) == NULL ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4368 | { |
Manuel Pégourié-Gonnard | b2a18a2 | 2015-05-27 16:29:56 +0200 | [diff] [blame] | 4369 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc %d bytes failed", |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4370 | sizeof( mbedtls_ssl_flight_item ) ) ); |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 4371 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4372 | } |
| 4373 | |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 4374 | if( ( msg->p = mbedtls_calloc( 1, ssl->out_msglen ) ) == NULL ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4375 | { |
Manuel Pégourié-Gonnard | b2a18a2 | 2015-05-27 16:29:56 +0200 | [diff] [blame] | 4376 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc %d bytes failed", ssl->out_msglen ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4377 | mbedtls_free( msg ); |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 4378 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4379 | } |
| 4380 | |
| 4381 | /* Copy current handshake message with headers */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4382 | mbedtls_platform_memcpy( msg->p, ssl->out_msg, ssl->out_msglen ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4383 | msg->len = ssl->out_msglen; |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4384 | msg->type = ssl->out_msgtype; |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4385 | msg->next = NULL; |
| 4386 | |
| 4387 | /* Append to the current flight */ |
| 4388 | if( ssl->handshake->flight == NULL ) |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4389 | ssl->handshake->flight = msg; |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4390 | else |
| 4391 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4392 | mbedtls_ssl_flight_item *cur = ssl->handshake->flight; |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4393 | while( cur->next != NULL ) |
| 4394 | cur = cur->next; |
| 4395 | cur->next = msg; |
| 4396 | } |
| 4397 | |
Hanno Becker | 3b23590 | 2018-08-06 09:54:53 +0100 | [diff] [blame] | 4398 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_flight_append" ) ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4399 | return( 0 ); |
| 4400 | } |
| 4401 | |
| 4402 | /* |
| 4403 | * Free the current flight of handshake messages |
| 4404 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4405 | static void ssl_flight_free( mbedtls_ssl_flight_item *flight ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4406 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4407 | mbedtls_ssl_flight_item *cur = flight; |
| 4408 | mbedtls_ssl_flight_item *next; |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4409 | |
| 4410 | while( cur != NULL ) |
| 4411 | { |
| 4412 | next = cur->next; |
| 4413 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4414 | mbedtls_free( cur->p ); |
| 4415 | mbedtls_free( cur ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4416 | |
| 4417 | cur = next; |
| 4418 | } |
| 4419 | } |
| 4420 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4421 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
| 4422 | static void ssl_dtls_replay_reset( mbedtls_ssl_context *ssl ); |
Manuel Pégourié-Gonnard | b47368a | 2014-09-24 13:29:58 +0200 | [diff] [blame] | 4423 | #endif |
| 4424 | |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4425 | /* |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4426 | * Swap transform_out and out_ctr with the alternative ones |
| 4427 | */ |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4428 | static int ssl_swap_epochs( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4429 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4430 | mbedtls_ssl_transform *tmp_transform; |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4431 | unsigned char tmp_out_ctr[8]; |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4432 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 4433 | int ret; |
| 4434 | #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4435 | |
| 4436 | if( ssl->transform_out == ssl->handshake->alt_transform_out ) |
| 4437 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4438 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip swap epochs" ) ); |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4439 | return( 0 ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4440 | } |
| 4441 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4442 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "swap epochs" ) ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4443 | |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4444 | /* Swap transforms */ |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4445 | tmp_transform = ssl->transform_out; |
| 4446 | ssl->transform_out = ssl->handshake->alt_transform_out; |
| 4447 | ssl->handshake->alt_transform_out = tmp_transform; |
| 4448 | |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4449 | /* Swap epoch + sequence_number */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4450 | mbedtls_platform_memcpy( tmp_out_ctr, ssl->cur_out_ctr, 8 ); |
| 4451 | mbedtls_platform_memcpy( ssl->cur_out_ctr, ssl->handshake->alt_out_ctr, 8 ); |
| 4452 | mbedtls_platform_memcpy( ssl->handshake->alt_out_ctr, tmp_out_ctr, 8 ); |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4453 | |
| 4454 | /* Adjust to the newly activated transform */ |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 4455 | ssl_update_out_pointers( ssl, ssl->transform_out ); |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4456 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4457 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 4458 | if( mbedtls_ssl_hw_record_activate != NULL ) |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4459 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4460 | if( ( ret = mbedtls_ssl_hw_record_activate( ssl, MBEDTLS_SSL_CHANNEL_OUTBOUND ) ) != 0 ) |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4461 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4462 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_activate", ret ); |
| 4463 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4464 | } |
| 4465 | } |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4466 | #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ |
| 4467 | |
| 4468 | return( 0 ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4469 | } |
| 4470 | |
| 4471 | /* |
| 4472 | * Retransmit the current flight of messages. |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4473 | */ |
| 4474 | int mbedtls_ssl_resend( mbedtls_ssl_context *ssl ) |
| 4475 | { |
| 4476 | int ret = 0; |
| 4477 | |
| 4478 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_resend" ) ); |
| 4479 | |
| 4480 | ret = mbedtls_ssl_flight_transmit( ssl ); |
| 4481 | |
| 4482 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_resend" ) ); |
| 4483 | |
| 4484 | return( ret ); |
| 4485 | } |
| 4486 | |
| 4487 | /* |
| 4488 | * Transmit or retransmit the current flight of messages. |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4489 | * |
| 4490 | * Need to remember the current message in case flush_output returns |
| 4491 | * WANT_WRITE, causing us to exit this function and come back later. |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4492 | * This function must be called until state is no longer SENDING. |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4493 | */ |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4494 | int mbedtls_ssl_flight_transmit( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4495 | { |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4496 | int ret; |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4497 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_flight_transmit" ) ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4498 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4499 | if( ssl->handshake->retransmit_state != MBEDTLS_SSL_RETRANS_SENDING ) |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4500 | { |
Manuel Pégourié-Gonnard | 19c62f9 | 2018-08-16 10:50:39 +0200 | [diff] [blame] | 4501 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialise flight transmission" ) ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4502 | |
| 4503 | ssl->handshake->cur_msg = ssl->handshake->flight; |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4504 | ssl->handshake->cur_msg_p = ssl->handshake->flight->p + 12; |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4505 | if( ( ret = ssl_swap_epochs( ssl ) ) != 0 ) |
| 4506 | return( ret ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4507 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4508 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_SENDING; |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4509 | } |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4510 | |
| 4511 | while( ssl->handshake->cur_msg != NULL ) |
| 4512 | { |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4513 | size_t max_frag_len; |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4514 | const mbedtls_ssl_flight_item * const cur = ssl->handshake->cur_msg; |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4515 | |
Hanno Becker | e1dcb03 | 2018-08-17 16:47:58 +0100 | [diff] [blame] | 4516 | int const is_finished = |
| 4517 | ( cur->type == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 4518 | cur->p[0] == MBEDTLS_SSL_HS_FINISHED ); |
| 4519 | |
Hanno Becker | 04da189 | 2018-08-14 13:22:10 +0100 | [diff] [blame] | 4520 | uint8_t const force_flush = ssl->disable_datagram_packing == 1 ? |
| 4521 | SSL_FORCE_FLUSH : SSL_DONT_FORCE_FLUSH; |
| 4522 | |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4523 | /* Swap epochs before sending Finished: we can't do it after |
| 4524 | * sending ChangeCipherSpec, in case write returns WANT_READ. |
| 4525 | * Must be done before copying, may change out_msg pointer */ |
Hanno Becker | e1dcb03 | 2018-08-17 16:47:58 +0100 | [diff] [blame] | 4526 | if( is_finished && ssl->handshake->cur_msg_p == ( cur->p + 12 ) ) |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4527 | { |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4528 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "swap epochs to send finished message" ) ); |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4529 | if( ( ret = ssl_swap_epochs( ssl ) ) != 0 ) |
| 4530 | return( ret ); |
Manuel Pégourié-Gonnard | c715aed | 2014-09-19 21:39:13 +0200 | [diff] [blame] | 4531 | } |
| 4532 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4533 | ret = ssl_get_remaining_payload_in_datagram( ssl ); |
| 4534 | if( ret < 0 ) |
| 4535 | return( ret ); |
| 4536 | max_frag_len = (size_t) ret; |
| 4537 | |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4538 | /* CCS is copied as is, while HS messages may need fragmentation */ |
| 4539 | if( cur->type == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) |
| 4540 | { |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4541 | if( max_frag_len == 0 ) |
| 4542 | { |
| 4543 | if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) |
| 4544 | return( ret ); |
| 4545 | |
| 4546 | continue; |
| 4547 | } |
| 4548 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4549 | mbedtls_platform_memcpy( ssl->out_msg, cur->p, cur->len ); |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4550 | ssl->out_msglen = cur->len; |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4551 | ssl->out_msgtype = cur->type; |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4552 | |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4553 | /* Update position inside current message */ |
| 4554 | ssl->handshake->cur_msg_p += cur->len; |
| 4555 | } |
| 4556 | else |
| 4557 | { |
| 4558 | const unsigned char * const p = ssl->handshake->cur_msg_p; |
| 4559 | const size_t hs_len = cur->len - 12; |
| 4560 | const size_t frag_off = p - ( cur->p + 12 ); |
| 4561 | const size_t rem_len = hs_len - frag_off; |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4562 | size_t cur_hs_frag_len, max_hs_frag_len; |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4563 | |
Hanno Becker | e1dcb03 | 2018-08-17 16:47:58 +0100 | [diff] [blame] | 4564 | if( ( max_frag_len < 12 ) || ( max_frag_len == 12 && hs_len != 0 ) ) |
Manuel Pégourié-Gonnard | a1071a5 | 2018-08-20 11:56:14 +0200 | [diff] [blame] | 4565 | { |
Hanno Becker | e1dcb03 | 2018-08-17 16:47:58 +0100 | [diff] [blame] | 4566 | if( is_finished ) |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 4567 | { |
| 4568 | if( ( ret = ssl_swap_epochs( ssl ) ) != 0 ) |
| 4569 | return( ret ); |
| 4570 | } |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4571 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4572 | if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) |
| 4573 | return( ret ); |
| 4574 | |
| 4575 | continue; |
| 4576 | } |
| 4577 | max_hs_frag_len = max_frag_len - 12; |
| 4578 | |
| 4579 | cur_hs_frag_len = rem_len > max_hs_frag_len ? |
| 4580 | max_hs_frag_len : rem_len; |
| 4581 | |
| 4582 | if( frag_off == 0 && cur_hs_frag_len != hs_len ) |
Manuel Pégourié-Gonnard | 19c62f9 | 2018-08-16 10:50:39 +0200 | [diff] [blame] | 4583 | { |
| 4584 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "fragmenting handshake message (%u > %u)", |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4585 | (unsigned) cur_hs_frag_len, |
| 4586 | (unsigned) max_hs_frag_len ) ); |
Manuel Pégourié-Gonnard | 19c62f9 | 2018-08-16 10:50:39 +0200 | [diff] [blame] | 4587 | } |
Manuel Pégourié-Gonnard | b747c6c | 2018-08-12 13:28:53 +0200 | [diff] [blame] | 4588 | |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4589 | /* Messages are stored with handshake headers as if not fragmented, |
| 4590 | * copy beginning of headers then fill fragmentation fields. |
| 4591 | * Handshake headers: type(1) len(3) seq(2) f_off(3) f_len(3) */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4592 | mbedtls_platform_memcpy( ssl->out_msg, cur->p, 6 ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4593 | |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 4594 | (void)mbedtls_platform_put_uint24_be( &ssl->out_msg[6], frag_off ); |
| 4595 | (void)mbedtls_platform_put_uint24_be( &ssl->out_msg[9], |
| 4596 | cur_hs_frag_len ); |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4597 | |
| 4598 | MBEDTLS_SSL_DEBUG_BUF( 3, "handshake header", ssl->out_msg, 12 ); |
| 4599 | |
Hanno Becker | 3f7b973 | 2018-08-28 09:53:25 +0100 | [diff] [blame] | 4600 | /* Copy the handshake message content and set records fields */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4601 | mbedtls_platform_memcpy( ssl->out_msg + 12, p, cur_hs_frag_len ); |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4602 | ssl->out_msglen = cur_hs_frag_len + 12; |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4603 | ssl->out_msgtype = cur->type; |
| 4604 | |
| 4605 | /* Update position inside current message */ |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4606 | ssl->handshake->cur_msg_p += cur_hs_frag_len; |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4607 | } |
| 4608 | |
| 4609 | /* If done with the current message move to the next one if any */ |
| 4610 | if( ssl->handshake->cur_msg_p >= cur->p + cur->len ) |
| 4611 | { |
| 4612 | if( cur->next != NULL ) |
| 4613 | { |
| 4614 | ssl->handshake->cur_msg = cur->next; |
| 4615 | ssl->handshake->cur_msg_p = cur->next->p + 12; |
| 4616 | } |
| 4617 | else |
| 4618 | { |
| 4619 | ssl->handshake->cur_msg = NULL; |
| 4620 | ssl->handshake->cur_msg_p = NULL; |
| 4621 | } |
| 4622 | } |
| 4623 | |
| 4624 | /* Actually send the message out */ |
Hanno Becker | 04da189 | 2018-08-14 13:22:10 +0100 | [diff] [blame] | 4625 | if( ( ret = mbedtls_ssl_write_record( ssl, force_flush ) ) != 0 ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4626 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4627 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4628 | return( ret ); |
| 4629 | } |
| 4630 | } |
| 4631 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4632 | if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) |
| 4633 | return( ret ); |
| 4634 | |
Manuel Pégourié-Gonnard | 28f4bea | 2017-09-13 14:00:05 +0200 | [diff] [blame] | 4635 | /* Update state and set timer */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4636 | if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER ) |
| 4637 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED; |
Manuel Pégourié-Gonnard | 23b7b70 | 2014-09-25 13:50:12 +0200 | [diff] [blame] | 4638 | else |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4639 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4640 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_WAITING; |
Manuel Pégourié-Gonnard | 4e2f245 | 2014-10-02 16:51:56 +0200 | [diff] [blame] | 4641 | ssl_set_timer( ssl, ssl->handshake->retransmit_timeout ); |
| 4642 | } |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4643 | |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4644 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_flight_transmit" ) ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4645 | |
| 4646 | return( 0 ); |
| 4647 | } |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4648 | |
| 4649 | /* |
| 4650 | * To be called when the last message of an incoming flight is received. |
| 4651 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4652 | void mbedtls_ssl_recv_flight_completed( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4653 | { |
| 4654 | /* We won't need to resend that one any more */ |
| 4655 | ssl_flight_free( ssl->handshake->flight ); |
| 4656 | ssl->handshake->flight = NULL; |
| 4657 | ssl->handshake->cur_msg = NULL; |
| 4658 | |
| 4659 | /* The next incoming flight will start with this msg_seq */ |
| 4660 | ssl->handshake->in_flight_start_seq = ssl->handshake->in_msg_seq; |
| 4661 | |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 4662 | /* We don't want to remember CCS's across flight boundaries. */ |
Hanno Becker | d7f8ae2 | 2018-08-16 09:45:56 +0100 | [diff] [blame] | 4663 | ssl->handshake->buffering.seen_ccs = 0; |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 4664 | |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 4665 | /* Clear future message buffering structure. */ |
| 4666 | ssl_buffering_free( ssl ); |
| 4667 | |
Manuel Pégourié-Gonnard | 6c1fa3a | 2014-10-01 16:58:16 +0200 | [diff] [blame] | 4668 | /* Cancel timer */ |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4669 | ssl_set_timer( ssl, 0 ); |
| 4670 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4671 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 4672 | ssl->in_msg[0] == MBEDTLS_SSL_HS_FINISHED ) |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4673 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4674 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED; |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4675 | } |
| 4676 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4677 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_PREPARING; |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 4678 | } |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4679 | |
| 4680 | /* |
| 4681 | * To be called when the last message of an outgoing flight is send. |
| 4682 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4683 | void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4684 | { |
Manuel Pégourié-Gonnard | 6c1fa3a | 2014-10-01 16:58:16 +0200 | [diff] [blame] | 4685 | ssl_reset_retransmit_timeout( ssl ); |
Manuel Pégourié-Gonnard | 0ac247f | 2014-09-30 22:21:31 +0200 | [diff] [blame] | 4686 | ssl_set_timer( ssl, ssl->handshake->retransmit_timeout ); |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4687 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4688 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 4689 | ssl->in_msg[0] == MBEDTLS_SSL_HS_FINISHED ) |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4690 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4691 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED; |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4692 | } |
| 4693 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4694 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_WAITING; |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 4695 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4696 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4697 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4698 | /* |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4699 | * Handshake layer functions |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4700 | */ |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4701 | |
| 4702 | /* |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4703 | * Write (DTLS: or queue) current handshake (including CCS) message. |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4704 | * |
| 4705 | * - fill in handshake headers |
| 4706 | * - update handshake checksum |
| 4707 | * - DTLS: save message for resending |
| 4708 | * - then pass to the record layer |
| 4709 | * |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4710 | * DTLS: except for HelloRequest, messages are only queued, and will only be |
| 4711 | * actually sent when calling flight_transmit() or resend(). |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4712 | * |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4713 | * Inputs: |
| 4714 | * - ssl->out_msglen: 4 + actual handshake message len |
| 4715 | * (4 is the size of handshake headers for TLS) |
| 4716 | * - ssl->out_msg[0]: the handshake type (ClientHello, ServerHello, etc) |
| 4717 | * - ssl->out_msg + 4: the handshake message body |
| 4718 | * |
Manuel Pégourié-Gonnard | 065a2a3 | 2018-08-20 11:09:26 +0200 | [diff] [blame] | 4719 | * Outputs, ie state before passing to flight_append() or write_record(): |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4720 | * - ssl->out_msglen: the length of the record contents |
| 4721 | * (including handshake headers but excluding record headers) |
| 4722 | * - ssl->out_msg: the record contents (handshake headers + content) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4723 | */ |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4724 | int mbedtls_ssl_write_handshake_msg( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4725 | { |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4726 | int ret; |
| 4727 | const size_t hs_len = ssl->out_msglen - 4; |
| 4728 | const unsigned char hs_type = ssl->out_msg[0]; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4729 | |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4730 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write handshake message" ) ); |
| 4731 | |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4732 | /* |
| 4733 | * Sanity checks |
| 4734 | */ |
Hanno Becker | c83d2b3 | 2018-08-22 16:05:47 +0100 | [diff] [blame] | 4735 | if( ssl->out_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE && |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4736 | ssl->out_msgtype != MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) |
| 4737 | { |
Hanno Becker | c83d2b3 | 2018-08-22 16:05:47 +0100 | [diff] [blame] | 4738 | /* In SSLv3, the client might send a NoCertificate alert. */ |
| 4739 | #if defined(MBEDTLS_SSL_PROTO_SSL3) && defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 4740 | if( ! ( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 && |
Hanno Becker | c83d2b3 | 2018-08-22 16:05:47 +0100 | [diff] [blame] | 4741 | ssl->out_msgtype == MBEDTLS_SSL_MSG_ALERT && |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 4742 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 4743 | MBEDTLS_SSL_IS_CLIENT ) ) |
Hanno Becker | c83d2b3 | 2018-08-22 16:05:47 +0100 | [diff] [blame] | 4744 | #endif /* MBEDTLS_SSL_PROTO_SSL3 && MBEDTLS_SSL_SRV_C */ |
| 4745 | { |
| 4746 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 4747 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 4748 | } |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4749 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4750 | |
Hanno Becker | f6d6e30 | 2018-11-07 11:57:51 +0000 | [diff] [blame] | 4751 | /* Whenever we send anything different from a |
| 4752 | * HelloRequest we should be in a handshake - double check. */ |
| 4753 | if( ! ( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 4754 | hs_type == MBEDTLS_SSL_HS_HELLO_REQUEST ) && |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4755 | ssl->handshake == NULL ) |
| 4756 | { |
| 4757 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 4758 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 4759 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4760 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4761 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 4762 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4763 | ssl->handshake != NULL && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4764 | ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4765 | { |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4766 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 4767 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4768 | } |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4769 | #endif |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4770 | |
Hanno Becker | b50a253 | 2018-08-06 11:52:54 +0100 | [diff] [blame] | 4771 | /* Double-check that we did not exceed the bounds |
| 4772 | * of the outgoing record buffer. |
| 4773 | * This should never fail as the various message |
| 4774 | * writing functions must obey the bounds of the |
| 4775 | * outgoing record buffer, but better be safe. |
| 4776 | * |
| 4777 | * Note: We deliberately do not check for the MTU or MFL here. |
| 4778 | */ |
| 4779 | if( ssl->out_msglen > MBEDTLS_SSL_OUT_CONTENT_LEN ) |
| 4780 | { |
| 4781 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Record too large: " |
| 4782 | "size %u, maximum %u", |
| 4783 | (unsigned) ssl->out_msglen, |
| 4784 | (unsigned) MBEDTLS_SSL_OUT_CONTENT_LEN ) ); |
| 4785 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 4786 | } |
| 4787 | |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4788 | /* |
| 4789 | * Fill handshake headers |
| 4790 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4791 | if( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4792 | { |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 4793 | (void)mbedtls_platform_put_uint24_be( &ssl->out_msg[1], hs_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4794 | |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 4795 | /* |
| 4796 | * DTLS has additional fields in the Handshake layer, |
| 4797 | * between the length field and the actual payload: |
| 4798 | * uint16 message_seq; |
| 4799 | * uint24 fragment_offset; |
| 4800 | * uint24 fragment_length; |
| 4801 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4802 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 4803 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 4804 | { |
Manuel Pégourié-Gonnard | e89bcf0 | 2014-02-18 18:50:02 +0100 | [diff] [blame] | 4805 | /* Make room for the additional DTLS fields */ |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 4806 | if( MBEDTLS_SSL_OUT_CONTENT_LEN - ssl->out_msglen < 8 ) |
Hanno Becker | 9648f8b | 2017-09-18 10:55:54 +0100 | [diff] [blame] | 4807 | { |
| 4808 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "DTLS handshake message too large: " |
| 4809 | "size %u, maximum %u", |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4810 | (unsigned) ( hs_len ), |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 4811 | (unsigned) ( MBEDTLS_SSL_OUT_CONTENT_LEN - 12 ) ) ); |
Hanno Becker | 9648f8b | 2017-09-18 10:55:54 +0100 | [diff] [blame] | 4812 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 4813 | } |
| 4814 | |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4815 | memmove( ssl->out_msg + 12, ssl->out_msg + 4, hs_len ); |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 4816 | ssl->out_msglen += 8; |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 4817 | |
Manuel Pégourié-Gonnard | c392b24 | 2014-08-19 17:53:11 +0200 | [diff] [blame] | 4818 | /* Write message_seq and update it, except for HelloRequest */ |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4819 | if( hs_type != MBEDTLS_SSL_HS_HELLO_REQUEST ) |
Manuel Pégourié-Gonnard | c392b24 | 2014-08-19 17:53:11 +0200 | [diff] [blame] | 4820 | { |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 4821 | (void)mbedtls_platform_put_uint16_be( &ssl->out_msg[4], |
| 4822 | ssl->handshake->out_msg_seq ); |
Manuel Pégourié-Gonnard | d9ba0d9 | 2014-09-02 18:30:26 +0200 | [diff] [blame] | 4823 | ++( ssl->handshake->out_msg_seq ); |
Manuel Pégourié-Gonnard | c392b24 | 2014-08-19 17:53:11 +0200 | [diff] [blame] | 4824 | } |
| 4825 | else |
| 4826 | { |
| 4827 | ssl->out_msg[4] = 0; |
| 4828 | ssl->out_msg[5] = 0; |
| 4829 | } |
Manuel Pégourié-Gonnard | e89bcf0 | 2014-02-18 18:50:02 +0100 | [diff] [blame] | 4830 | |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4831 | /* Handshake hashes are computed without fragmentation, |
| 4832 | * so set frag_offset = 0 and frag_len = hs_len for now */ |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 4833 | if( mbedtls_platform_memset( ssl->out_msg + 6, 0x00, 3 ) != |
| 4834 | ssl->out_msg + 6 ) |
| 4835 | { |
| 4836 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 4837 | } |
| 4838 | if( mbedtls_platform_memcpy( ssl->out_msg + 9, ssl->out_msg + 1, 3 ) != |
| 4839 | ssl->out_msg + 9 ) |
| 4840 | { |
| 4841 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 4842 | } |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 4843 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4844 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 4845 | |
Hanno Becker | 0207e53 | 2018-08-28 10:28:28 +0100 | [diff] [blame] | 4846 | /* Update running hashes of handshake messages seen */ |
Manuel Pégourié-Gonnard | 9c3a8ca | 2017-09-13 09:54:27 +0200 | [diff] [blame] | 4847 | if( hs_type != MBEDTLS_SSL_HS_HELLO_REQUEST ) |
Hanno Becker | 8a4b590 | 2019-08-15 17:04:57 +0100 | [diff] [blame] | 4848 | mbedtls_ssl_update_checksum( ssl, ssl->out_msg, ssl->out_msglen ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4849 | } |
| 4850 | |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4851 | /* Either send now, or just save to be sent (and resent) later */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4852 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 4853 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | f6d6e30 | 2018-11-07 11:57:51 +0000 | [diff] [blame] | 4854 | ! ( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 4855 | hs_type == MBEDTLS_SSL_HS_HELLO_REQUEST ) ) |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4856 | { |
| 4857 | if( ( ret = ssl_flight_append( ssl ) ) != 0 ) |
| 4858 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4859 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_flight_append", ret ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4860 | return( ret ); |
| 4861 | } |
| 4862 | } |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4863 | else |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4864 | #endif |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4865 | { |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4866 | if( ( ret = mbedtls_ssl_write_record( ssl, SSL_FORCE_FLUSH ) ) != 0 ) |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4867 | { |
| 4868 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_write_record", ret ); |
| 4869 | return( ret ); |
| 4870 | } |
| 4871 | } |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4872 | |
| 4873 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write handshake message" ) ); |
| 4874 | |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 4875 | return( 0 ); |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4876 | } |
| 4877 | |
| 4878 | /* |
| 4879 | * Record layer functions |
| 4880 | */ |
| 4881 | |
| 4882 | /* |
| 4883 | * Write current record. |
| 4884 | * |
| 4885 | * Uses: |
| 4886 | * - ssl->out_msgtype: type of the message (AppData, Handshake, Alert, CCS) |
| 4887 | * - ssl->out_msglen: length of the record content (excl headers) |
| 4888 | * - ssl->out_msg: record content |
| 4889 | */ |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4890 | int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl, uint8_t force_flush ) |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4891 | { |
| 4892 | int ret, done = 0; |
| 4893 | size_t len = ssl->out_msglen; |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 4894 | uint8_t flush = force_flush; |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 4895 | |
| 4896 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write record" ) ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 4897 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4898 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 4899 | if( ssl->transform_out != NULL && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4900 | ssl->session_out->compression == MBEDTLS_SSL_COMPRESS_DEFLATE ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 4901 | { |
| 4902 | if( ( ret = ssl_compress_buf( ssl ) ) != 0 ) |
| 4903 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4904 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_compress_buf", ret ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 4905 | return( ret ); |
| 4906 | } |
| 4907 | |
| 4908 | len = ssl->out_msglen; |
| 4909 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4910 | #endif /*MBEDTLS_ZLIB_SUPPORT */ |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 4911 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4912 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 4913 | if( mbedtls_ssl_hw_record_write != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4914 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4915 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_write()" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 4916 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4917 | ret = mbedtls_ssl_hw_record_write( ssl ); |
| 4918 | if( ret != 0 && ret != MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4919 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4920 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_write", ret ); |
| 4921 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4922 | } |
Paul Bakker | c787811 | 2012-12-19 14:41:14 +0100 | [diff] [blame] | 4923 | |
| 4924 | if( ret == 0 ) |
| 4925 | done = 1; |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4926 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4927 | #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4928 | if( !done ) |
| 4929 | { |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4930 | unsigned i; |
| 4931 | size_t protected_record_size; |
Jarno Lamsa | acb5eb0 | 2019-11-14 14:13:10 +0200 | [diff] [blame] | 4932 | volatile int encrypted_fi = 0; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 4933 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 4934 | size_t out_buf_len = ssl->out_buf_len; |
| 4935 | #else |
| 4936 | size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN; |
| 4937 | #endif |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 4938 | |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 4939 | /* Skip writing the record content type to after the encryption, |
| 4940 | * as it may change when using the CID extension. */ |
| 4941 | |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 4942 | mbedtls_ssl_write_version( mbedtls_ssl_get_major_ver( ssl ), |
| 4943 | mbedtls_ssl_get_minor_ver( ssl ), |
| 4944 | ssl->conf->transport, ssl->out_hdr + 1 ); |
Manuel Pégourié-Gonnard | 507e1e4 | 2014-02-13 11:17:34 +0100 | [diff] [blame] | 4945 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4946 | mbedtls_platform_memcpy( ssl->out_ctr, ssl->cur_out_ctr, 8 ); |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 4947 | (void)mbedtls_platform_put_uint16_be( ssl->out_len, len ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4948 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 4949 | if( ssl->transform_out != NULL ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4950 | { |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 4951 | mbedtls_record rec; |
| 4952 | |
| 4953 | rec.buf = ssl->out_iv; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 4954 | rec.buf_len = out_buf_len - ( ssl->out_iv - ssl->out_buf ); |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 4955 | rec.data_len = ssl->out_msglen; |
| 4956 | rec.data_offset = ssl->out_msg - rec.buf; |
| 4957 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 4958 | mbedtls_platform_memcpy( &rec.ctr[0], ssl->out_ctr, 8 ); |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 4959 | mbedtls_ssl_write_version( mbedtls_ssl_get_major_ver( ssl ), |
| 4960 | mbedtls_ssl_get_minor_ver( ssl ), |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 4961 | ssl->conf->transport, rec.ver ); |
| 4962 | rec.type = ssl->out_msgtype; |
| 4963 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 4964 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 505089d | 2019-05-01 09:45:57 +0100 | [diff] [blame] | 4965 | /* The CID is set by mbedtls_ssl_encrypt_buf(). */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 4966 | rec.cid_len = 0; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 4967 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | e83efe6 | 2019-04-29 13:52:53 +0100 | [diff] [blame] | 4968 | |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 4969 | if( ( ret = mbedtls_ssl_encrypt_buf( ssl, ssl->transform_out, &rec, |
Hanno Becker | ece325c | 2019-06-13 15:39:27 +0100 | [diff] [blame] | 4970 | mbedtls_ssl_conf_get_frng( ssl->conf ), |
Hanno Becker | 9a12243 | 2019-07-23 13:24:02 +0100 | [diff] [blame] | 4971 | mbedtls_ssl_conf_get_prng( ssl->conf ) ) ) != 0 ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4972 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 4973 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_encrypt_buf", ret ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4974 | return( ret ); |
| 4975 | } |
| 4976 | |
Hanno Becker | 3307b53 | 2017-12-27 21:37:21 +0000 | [diff] [blame] | 4977 | if( rec.data_offset != 0 ) |
| 4978 | { |
| 4979 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 4980 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 4981 | } |
| 4982 | |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 4983 | /* Update the record content type and CID. */ |
| 4984 | ssl->out_msgtype = rec.type; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 4985 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID ) |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 4986 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 4987 | memcpy( ssl->out_cid, rec.cid, rec.cid_len ); |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 4988 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | c5aee96 | 2019-03-14 12:56:23 +0000 | [diff] [blame] | 4989 | ssl->out_msglen = len = rec.data_len; |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 4990 | (void)mbedtls_platform_put_uint16_be( ssl->out_len, rec.data_len ); |
Jarno Lamsa | acb5eb0 | 2019-11-14 14:13:10 +0200 | [diff] [blame] | 4991 | encrypted_fi = 1; |
| 4992 | } |
| 4993 | |
Jarno Lamsa | 88db2ae | 2019-12-19 14:51:34 +0200 | [diff] [blame] | 4994 | /* Double check to ensure the encryption has been done */ |
Jarno Lamsa | acb5eb0 | 2019-11-14 14:13:10 +0200 | [diff] [blame] | 4995 | if( ssl->transform_out != NULL && encrypted_fi == 0 ) |
| 4996 | { |
Jarno Lamsa | 88db2ae | 2019-12-19 14:51:34 +0200 | [diff] [blame] | 4997 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 4998 | } |
| 4999 | |
Hanno Becker | 4339576 | 2019-05-03 14:46:38 +0100 | [diff] [blame] | 5000 | protected_record_size = len + mbedtls_ssl_out_hdr_len( ssl ); |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 5001 | |
| 5002 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 5003 | /* In case of DTLS, double-check that we don't exceed |
| 5004 | * the remaining space in the datagram. */ |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 5005 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 5006 | { |
Hanno Becker | 554b0af | 2018-08-22 20:33:41 +0100 | [diff] [blame] | 5007 | ret = ssl_get_remaining_space_in_datagram( ssl ); |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 5008 | if( ret < 0 ) |
| 5009 | return( ret ); |
| 5010 | |
| 5011 | if( protected_record_size > (size_t) ret ) |
| 5012 | { |
| 5013 | /* Should never happen */ |
| 5014 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 5015 | } |
| 5016 | } |
| 5017 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5018 | |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 5019 | /* Now write the potentially updated record content type. */ |
| 5020 | ssl->out_hdr[0] = (unsigned char) ssl->out_msgtype; |
| 5021 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5022 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "output record: msgtype = %d, " |
Hanno Becker | ecbdf1c | 2018-08-28 09:53:54 +0100 | [diff] [blame] | 5023 | "version = [%d:%d], msglen = %d", |
| 5024 | ssl->out_hdr[0], ssl->out_hdr[1], |
| 5025 | ssl->out_hdr[2], len ) ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5026 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5027 | MBEDTLS_SSL_DEBUG_BUF( 4, "output record sent to network", |
Hanno Becker | ecbdf1c | 2018-08-28 09:53:54 +0100 | [diff] [blame] | 5028 | ssl->out_hdr, protected_record_size ); |
Hanno Becker | 2b1e354 | 2018-08-06 11:19:13 +0100 | [diff] [blame] | 5029 | |
| 5030 | ssl->out_left += protected_record_size; |
| 5031 | ssl->out_hdr += protected_record_size; |
| 5032 | ssl_update_out_pointers( ssl, ssl->transform_out ); |
| 5033 | |
Hanno Becker | 0448462 | 2018-08-06 09:49:38 +0100 | [diff] [blame] | 5034 | for( i = 8; i > ssl_ep_len( ssl ); i-- ) |
| 5035 | if( ++ssl->cur_out_ctr[i - 1] != 0 ) |
| 5036 | break; |
| 5037 | |
| 5038 | /* The loop goes to its end iff the counter is wrapping */ |
| 5039 | if( i == ssl_ep_len( ssl ) ) |
| 5040 | { |
| 5041 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "outgoing message counter would wrap" ) ); |
| 5042 | return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING ); |
| 5043 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5044 | } |
| 5045 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 5046 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 5047 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | 47db877 | 2018-08-21 13:32:13 +0100 | [diff] [blame] | 5048 | flush == SSL_DONT_FORCE_FLUSH ) |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 5049 | { |
Hanno Becker | 1f5a15d | 2018-08-21 13:31:31 +0100 | [diff] [blame] | 5050 | size_t remaining; |
| 5051 | ret = ssl_get_remaining_payload_in_datagram( ssl ); |
| 5052 | if( ret < 0 ) |
| 5053 | { |
| 5054 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_get_remaining_payload_in_datagram", |
| 5055 | ret ); |
| 5056 | return( ret ); |
| 5057 | } |
| 5058 | |
| 5059 | remaining = (size_t) ret; |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 5060 | if( remaining == 0 ) |
Hanno Becker | f0da667 | 2018-08-28 09:55:10 +0100 | [diff] [blame] | 5061 | { |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 5062 | flush = SSL_FORCE_FLUSH; |
Hanno Becker | f0da667 | 2018-08-28 09:55:10 +0100 | [diff] [blame] | 5063 | } |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 5064 | else |
| 5065 | { |
Hanno Becker | 513815a | 2018-08-20 11:56:09 +0100 | [diff] [blame] | 5066 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Still %u bytes available in current datagram", (unsigned) remaining ) ); |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 5067 | } |
| 5068 | } |
| 5069 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 5070 | |
| 5071 | if( ( flush == SSL_FORCE_FLUSH ) && |
| 5072 | ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5073 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5074 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flush_output", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5075 | return( ret ); |
| 5076 | } |
| 5077 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5078 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write record" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5079 | |
| 5080 | return( 0 ); |
| 5081 | } |
| 5082 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5083 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | e25e3b7 | 2018-08-16 09:30:53 +0100 | [diff] [blame] | 5084 | |
| 5085 | static int ssl_hs_is_proper_fragment( mbedtls_ssl_context *ssl ) |
| 5086 | { |
| 5087 | if( ssl->in_msglen < ssl->in_hslen || |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 5088 | mbedtls_platform_memequal( ssl->in_msg + 6, "\0\0\0", 3 ) != 0 || |
| 5089 | mbedtls_platform_memequal( ssl->in_msg + 9, ssl->in_msg + 1, 3 ) != 0 ) |
Hanno Becker | e25e3b7 | 2018-08-16 09:30:53 +0100 | [diff] [blame] | 5090 | { |
Andrzej Kurek | 8f52a8a | 2020-06-08 11:02:22 -0400 | [diff] [blame] | 5091 | return( PROPER_HS_FRAGMENT ); |
Hanno Becker | e25e3b7 | 2018-08-16 09:30:53 +0100 | [diff] [blame] | 5092 | } |
| 5093 | return( 0 ); |
| 5094 | } |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5095 | |
Hanno Becker | cd9dcda | 2018-08-28 17:18:56 +0100 | [diff] [blame] | 5096 | static uint32_t ssl_get_hs_frag_len( mbedtls_ssl_context const *ssl ) |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5097 | { |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 5098 | return( (uint32_t)mbedtls_platform_get_uint24_be( &ssl->in_msg[9] ) ); |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5099 | } |
| 5100 | |
Hanno Becker | cd9dcda | 2018-08-28 17:18:56 +0100 | [diff] [blame] | 5101 | static uint32_t ssl_get_hs_frag_off( mbedtls_ssl_context const *ssl ) |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5102 | { |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 5103 | return( (uint32_t)mbedtls_platform_get_uint24_be( &ssl->in_msg[6] ) ); |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5104 | } |
| 5105 | |
Hanno Becker | cd9dcda | 2018-08-28 17:18:56 +0100 | [diff] [blame] | 5106 | static int ssl_check_hs_header( mbedtls_ssl_context const *ssl ) |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5107 | { |
| 5108 | uint32_t msg_len, frag_off, frag_len; |
| 5109 | |
| 5110 | msg_len = ssl_get_hs_total_len( ssl ); |
| 5111 | frag_off = ssl_get_hs_frag_off( ssl ); |
| 5112 | frag_len = ssl_get_hs_frag_len( ssl ); |
| 5113 | |
| 5114 | if( frag_off > msg_len ) |
| 5115 | return( -1 ); |
| 5116 | |
| 5117 | if( frag_len > msg_len - frag_off ) |
| 5118 | return( -1 ); |
| 5119 | |
| 5120 | if( frag_len + 12 > ssl->in_msglen ) |
| 5121 | return( -1 ); |
| 5122 | |
| 5123 | return( 0 ); |
| 5124 | } |
| 5125 | |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5126 | /* |
| 5127 | * Mark bits in bitmask (used for DTLS HS reassembly) |
| 5128 | */ |
| 5129 | static void ssl_bitmask_set( unsigned char *mask, size_t offset, size_t len ) |
| 5130 | { |
| 5131 | unsigned int start_bits, end_bits; |
| 5132 | |
| 5133 | start_bits = 8 - ( offset % 8 ); |
| 5134 | if( start_bits != 8 ) |
| 5135 | { |
| 5136 | size_t first_byte_idx = offset / 8; |
| 5137 | |
Manuel Pégourié-Gonnard | ac03052 | 2014-09-02 14:23:40 +0200 | [diff] [blame] | 5138 | /* Special case */ |
| 5139 | if( len <= start_bits ) |
| 5140 | { |
| 5141 | for( ; len != 0; len-- ) |
| 5142 | mask[first_byte_idx] |= 1 << ( start_bits - len ); |
| 5143 | |
| 5144 | /* Avoid potential issues with offset or len becoming invalid */ |
| 5145 | return; |
| 5146 | } |
| 5147 | |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5148 | offset += start_bits; /* Now offset % 8 == 0 */ |
| 5149 | len -= start_bits; |
| 5150 | |
| 5151 | for( ; start_bits != 0; start_bits-- ) |
| 5152 | mask[first_byte_idx] |= 1 << ( start_bits - 1 ); |
| 5153 | } |
| 5154 | |
| 5155 | end_bits = len % 8; |
| 5156 | if( end_bits != 0 ) |
| 5157 | { |
| 5158 | size_t last_byte_idx = ( offset + len ) / 8; |
| 5159 | |
| 5160 | len -= end_bits; /* Now len % 8 == 0 */ |
| 5161 | |
| 5162 | for( ; end_bits != 0; end_bits-- ) |
| 5163 | mask[last_byte_idx] |= 1 << ( 8 - end_bits ); |
| 5164 | } |
| 5165 | |
| 5166 | memset( mask + offset / 8, 0xFF, len / 8 ); |
| 5167 | } |
| 5168 | |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 5169 | #define BITMASK_CHECK_FAILED 0x75555555 |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5170 | /* |
| 5171 | * Check that bitmask is full |
| 5172 | */ |
| 5173 | static int ssl_bitmask_check( unsigned char *mask, size_t len ) |
| 5174 | { |
| 5175 | size_t i; |
| 5176 | |
| 5177 | for( i = 0; i < len / 8; i++ ) |
| 5178 | if( mask[i] != 0xFF ) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 5179 | return( BITMASK_CHECK_FAILED ); |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5180 | |
| 5181 | for( i = 0; i < len % 8; i++ ) |
| 5182 | if( ( mask[len / 8] & ( 1 << ( 7 - i ) ) ) == 0 ) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 5183 | return( BITMASK_CHECK_FAILED ); |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5184 | |
| 5185 | return( 0 ); |
| 5186 | } |
| 5187 | |
Hanno Becker | 56e205e | 2018-08-16 09:06:12 +0100 | [diff] [blame] | 5188 | /* msg_len does not include the handshake header */ |
Hanno Becker | 65dc885 | 2018-08-23 09:40:49 +0100 | [diff] [blame] | 5189 | static size_t ssl_get_reassembly_buffer_size( size_t msg_len, |
Hanno Becker | 2a97b0e | 2018-08-21 15:47:49 +0100 | [diff] [blame] | 5190 | unsigned add_bitmap ) |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5191 | { |
Hanno Becker | 56e205e | 2018-08-16 09:06:12 +0100 | [diff] [blame] | 5192 | size_t alloc_len; |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5193 | |
Hanno Becker | 56e205e | 2018-08-16 09:06:12 +0100 | [diff] [blame] | 5194 | alloc_len = 12; /* Handshake header */ |
| 5195 | alloc_len += msg_len; /* Content buffer */ |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5196 | |
Hanno Becker | d07df86 | 2018-08-16 09:14:58 +0100 | [diff] [blame] | 5197 | if( add_bitmap ) |
| 5198 | alloc_len += msg_len / 8 + ( msg_len % 8 != 0 ); /* Bitmap */ |
Manuel Pégourié-Gonnard | 502bf30 | 2014-08-20 13:12:58 +0200 | [diff] [blame] | 5199 | |
Hanno Becker | 2a97b0e | 2018-08-21 15:47:49 +0100 | [diff] [blame] | 5200 | return( alloc_len ); |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5201 | } |
Hanno Becker | 56e205e | 2018-08-16 09:06:12 +0100 | [diff] [blame] | 5202 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5203 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5204 | |
Hanno Becker | cd9dcda | 2018-08-28 17:18:56 +0100 | [diff] [blame] | 5205 | static uint32_t ssl_get_hs_total_len( mbedtls_ssl_context const *ssl ) |
Hanno Becker | 12555c6 | 2018-08-16 12:47:53 +0100 | [diff] [blame] | 5206 | { |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 5207 | return( (uint32_t)mbedtls_platform_get_uint24_be( &ssl->in_msg[1] ) ); |
Hanno Becker | 12555c6 | 2018-08-16 12:47:53 +0100 | [diff] [blame] | 5208 | } |
Hanno Becker | e25e3b7 | 2018-08-16 09:30:53 +0100 | [diff] [blame] | 5209 | |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 5210 | int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5211 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5212 | if( ssl->in_msglen < mbedtls_ssl_hs_hdr_len( ssl ) ) |
Manuel Pégourié-Gonnard | 9d1d719 | 2014-09-03 11:01:14 +0200 | [diff] [blame] | 5213 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5214 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake message too short: %d", |
Manuel Pégourié-Gonnard | 9d1d719 | 2014-09-03 11:01:14 +0200 | [diff] [blame] | 5215 | ssl->in_msglen ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5216 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
Manuel Pégourié-Gonnard | 9d1d719 | 2014-09-03 11:01:14 +0200 | [diff] [blame] | 5217 | } |
| 5218 | |
Hanno Becker | 12555c6 | 2018-08-16 12:47:53 +0100 | [diff] [blame] | 5219 | ssl->in_hslen = mbedtls_ssl_hs_hdr_len( ssl ) + ssl_get_hs_total_len( ssl ); |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5220 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5221 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "handshake message: msglen =" |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5222 | " %d, type = %d, hslen = %d", |
Manuel Pégourié-Gonnard | ce441b3 | 2014-02-18 17:40:52 +0100 | [diff] [blame] | 5223 | ssl->in_msglen, ssl->in_msg[0], ssl->in_hslen ) ); |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5224 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5225 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 5226 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5227 | { |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5228 | int ret; |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 5229 | unsigned int recv_msg_seq = (unsigned int) |
| 5230 | mbedtls_platform_get_uint16_be( &ssl->in_msg[4] ); |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5231 | |
Hanno Becker | 44650b7 | 2018-08-16 12:51:11 +0100 | [diff] [blame] | 5232 | if( ssl_check_hs_header( ssl ) != 0 ) |
| 5233 | { |
| 5234 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid handshake header" ) ); |
| 5235 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 5236 | } |
| 5237 | |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 5238 | if( ssl->handshake != NULL && |
Hanno Becker | c76c619 | 2017-06-06 10:03:17 +0100 | [diff] [blame] | 5239 | ( ( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER && |
| 5240 | recv_msg_seq != ssl->handshake->in_msg_seq ) || |
| 5241 | ( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER && |
| 5242 | ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_HELLO ) ) ) |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 5243 | { |
Hanno Becker | 9e1ec22 | 2018-08-15 15:54:43 +0100 | [diff] [blame] | 5244 | if( recv_msg_seq > ssl->handshake->in_msg_seq ) |
| 5245 | { |
| 5246 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "received future handshake message of sequence number %u (next %u)", |
| 5247 | recv_msg_seq, |
| 5248 | ssl->handshake->in_msg_seq ) ); |
| 5249 | return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); |
| 5250 | } |
| 5251 | |
Manuel Pégourié-Gonnard | fc572dd | 2014-10-09 17:56:57 +0200 | [diff] [blame] | 5252 | /* Retransmit only on last message from previous flight, to avoid |
| 5253 | * too many retransmissions. |
| 5254 | * Besides, No sane server ever retransmits HelloVerifyRequest */ |
| 5255 | if( recv_msg_seq == ssl->handshake->in_flight_start_seq - 1 && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5256 | ssl->in_msg[0] != MBEDTLS_SSL_HS_HELLO_VERIFY_REQUEST ) |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 5257 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5258 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "received message from last flight, " |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 5259 | "message_seq = %d, start_of_flight = %d", |
| 5260 | recv_msg_seq, |
| 5261 | ssl->handshake->in_flight_start_seq ) ); |
| 5262 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5263 | if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 5264 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5265 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_resend", ret ); |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 5266 | return( ret ); |
| 5267 | } |
| 5268 | } |
| 5269 | else |
| 5270 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5271 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "dropping out-of-sequence message: " |
Manuel Pégourié-Gonnard | 6a2bdfa | 2014-09-19 21:18:23 +0200 | [diff] [blame] | 5272 | "message_seq = %d, expected = %d", |
| 5273 | recv_msg_seq, |
| 5274 | ssl->handshake->in_msg_seq ) ); |
| 5275 | } |
| 5276 | |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 5277 | return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ); |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 5278 | } |
| 5279 | /* Wait until message completion to increment in_msg_seq */ |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5280 | |
Hanno Becker | 6d97ef5 | 2018-08-16 13:09:04 +0100 | [diff] [blame] | 5281 | /* Message reassembly is handled alongside buffering of future |
| 5282 | * messages; the commonality is that both handshake fragments and |
Hanno Becker | 83ab41c | 2018-08-28 17:19:38 +0100 | [diff] [blame] | 5283 | * future messages cannot be forwarded immediately to the |
Hanno Becker | 6d97ef5 | 2018-08-16 13:09:04 +0100 | [diff] [blame] | 5284 | * handshake logic layer. */ |
Andrzej Kurek | 8f52a8a | 2020-06-08 11:02:22 -0400 | [diff] [blame] | 5285 | if( ssl_hs_is_proper_fragment( ssl ) == PROPER_HS_FRAGMENT ) |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5286 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5287 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "found fragmented DTLS handshake message" ) ); |
Hanno Becker | 6d97ef5 | 2018-08-16 13:09:04 +0100 | [diff] [blame] | 5288 | return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5289 | } |
| 5290 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 5291 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5292 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 5293 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Manuel Pégourié-Gonnard | ed79a4b | 2014-08-20 10:43:01 +0200 | [diff] [blame] | 5294 | { |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 5295 | /* With TLS we don't handle fragmentation (for now) */ |
| 5296 | if( ssl->in_msglen < ssl->in_hslen ) |
| 5297 | { |
| 5298 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "TLS handshake fragmentation not supported" ) ); |
| 5299 | return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); |
| 5300 | } |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5301 | } |
Manuel Pégourié-Gonnard | ec1c222 | 2019-06-12 10:18:26 +0200 | [diff] [blame] | 5302 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5303 | |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 5304 | return( 0 ); |
| 5305 | } |
| 5306 | |
| 5307 | void mbedtls_ssl_update_handshake_status( mbedtls_ssl_context *ssl ) |
| 5308 | { |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 5309 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 5310 | |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 5311 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER && hs != NULL ) |
Hanno Becker | 8a4b590 | 2019-08-15 17:04:57 +0100 | [diff] [blame] | 5312 | mbedtls_ssl_update_checksum( ssl, ssl->in_msg, ssl->in_hslen ); |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5313 | |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 5314 | /* Handshake message is complete, increment counter */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5315 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 5316 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 5317 | ssl->handshake != NULL ) |
| 5318 | { |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 5319 | unsigned offset; |
| 5320 | mbedtls_ssl_hs_buffer *hs_buf; |
Hanno Becker | e25e3b7 | 2018-08-16 09:30:53 +0100 | [diff] [blame] | 5321 | |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 5322 | /* Increment handshake sequence number */ |
| 5323 | hs->in_msg_seq++; |
| 5324 | |
| 5325 | /* |
| 5326 | * Clear up handshake buffering and reassembly structure. |
| 5327 | */ |
| 5328 | |
| 5329 | /* Free first entry */ |
Hanno Becker | e605b19 | 2018-08-21 15:59:07 +0100 | [diff] [blame] | 5330 | ssl_buffering_free_slot( ssl, 0 ); |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 5331 | |
| 5332 | /* Shift all other entries */ |
Hanno Becker | e605b19 | 2018-08-21 15:59:07 +0100 | [diff] [blame] | 5333 | for( offset = 0, hs_buf = &hs->buffering.hs[0]; |
| 5334 | offset + 1 < MBEDTLS_SSL_MAX_BUFFERED_HS; |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 5335 | offset++, hs_buf++ ) |
| 5336 | { |
| 5337 | *hs_buf = *(hs_buf + 1); |
| 5338 | } |
| 5339 | |
| 5340 | /* Create a fresh last entry */ |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 5341 | mbedtls_platform_memset( hs_buf, 0, sizeof( mbedtls_ssl_hs_buffer ) ); |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 5342 | } |
| 5343 | #endif |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 5344 | } |
| 5345 | |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5346 | /* |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5347 | * DTLS anti-replay: RFC 6347 4.1.2.6 |
| 5348 | * |
Manuel Pégourié-Gonnard | 4956fd7 | 2014-09-24 11:13:44 +0200 | [diff] [blame] | 5349 | * in_window is a field of bits numbered from 0 (lsb) to 63 (msb). |
| 5350 | * Bit n is set iff record number in_window_top - n has been seen. |
| 5351 | * |
| 5352 | * Usually, in_window_top is the last record number seen and the lsb of |
| 5353 | * in_window is set. The only exception is the initial state (record number 0 |
| 5354 | * not seen yet). |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5355 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5356 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
| 5357 | static void ssl_dtls_replay_reset( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5358 | { |
| 5359 | ssl->in_window_top = 0; |
| 5360 | ssl->in_window = 0; |
| 5361 | } |
| 5362 | |
| 5363 | static inline uint64_t ssl_load_six_bytes( unsigned char *buf ) |
| 5364 | { |
| 5365 | return( ( (uint64_t) buf[0] << 40 ) | |
| 5366 | ( (uint64_t) buf[1] << 32 ) | |
| 5367 | ( (uint64_t) buf[2] << 24 ) | |
| 5368 | ( (uint64_t) buf[3] << 16 ) | |
| 5369 | ( (uint64_t) buf[4] << 8 ) | |
| 5370 | ( (uint64_t) buf[5] ) ); |
| 5371 | } |
| 5372 | |
Arto Kinnunen | 8a8488c | 2019-10-29 11:13:33 +0200 | [diff] [blame] | 5373 | static int mbedtls_ssl_dtls_record_replay_check( mbedtls_ssl_context *ssl, uint8_t *record_in_ctr ) |
| 5374 | { |
| 5375 | int ret; |
| 5376 | unsigned char *original_in_ctr; |
| 5377 | |
| 5378 | // save original in_ctr |
| 5379 | original_in_ctr = ssl->in_ctr; |
| 5380 | |
| 5381 | // use counter from record |
| 5382 | ssl->in_ctr = record_in_ctr; |
| 5383 | |
| 5384 | ret = mbedtls_ssl_dtls_replay_check( (mbedtls_ssl_context const *) ssl ); |
| 5385 | |
| 5386 | // restore the counter |
| 5387 | ssl->in_ctr = original_in_ctr; |
| 5388 | |
| 5389 | return ret; |
| 5390 | } |
| 5391 | |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5392 | /* |
| 5393 | * Return 0 if sequence number is acceptable, -1 otherwise |
| 5394 | */ |
Hanno Becker | fc55172 | 2019-07-12 08:50:37 +0100 | [diff] [blame] | 5395 | int mbedtls_ssl_dtls_replay_check( mbedtls_ssl_context const *ssl ) |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5396 | { |
| 5397 | uint64_t rec_seqnum = ssl_load_six_bytes( ssl->in_ctr + 2 ); |
| 5398 | uint64_t bit; |
| 5399 | |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 5400 | if( mbedtls_ssl_conf_get_anti_replay( ssl->conf ) == |
| 5401 | MBEDTLS_SSL_ANTI_REPLAY_DISABLED ) |
| 5402 | { |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 5403 | return( 0 ); |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 5404 | } |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 5405 | |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5406 | if( rec_seqnum > ssl->in_window_top ) |
| 5407 | return( 0 ); |
| 5408 | |
Manuel Pégourié-Gonnard | 4956fd7 | 2014-09-24 11:13:44 +0200 | [diff] [blame] | 5409 | bit = ssl->in_window_top - rec_seqnum; |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5410 | |
| 5411 | if( bit >= 64 ) |
| 5412 | return( -1 ); |
| 5413 | |
| 5414 | if( ( ssl->in_window & ( (uint64_t) 1 << bit ) ) != 0 ) |
| 5415 | return( -1 ); |
| 5416 | |
| 5417 | return( 0 ); |
| 5418 | } |
| 5419 | |
| 5420 | /* |
| 5421 | * Update replay window on new validated record |
| 5422 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5423 | void mbedtls_ssl_dtls_replay_update( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5424 | { |
| 5425 | uint64_t rec_seqnum = ssl_load_six_bytes( ssl->in_ctr + 2 ); |
| 5426 | |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 5427 | if( mbedtls_ssl_conf_get_anti_replay( ssl->conf ) == |
| 5428 | MBEDTLS_SSL_ANTI_REPLAY_DISABLED ) |
| 5429 | { |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 5430 | return; |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 5431 | } |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 5432 | |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5433 | if( rec_seqnum > ssl->in_window_top ) |
| 5434 | { |
| 5435 | /* Update window_top and the contents of the window */ |
| 5436 | uint64_t shift = rec_seqnum - ssl->in_window_top; |
| 5437 | |
| 5438 | if( shift >= 64 ) |
Manuel Pégourié-Gonnard | 4956fd7 | 2014-09-24 11:13:44 +0200 | [diff] [blame] | 5439 | ssl->in_window = 1; |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5440 | else |
Manuel Pégourié-Gonnard | 4956fd7 | 2014-09-24 11:13:44 +0200 | [diff] [blame] | 5441 | { |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5442 | ssl->in_window <<= shift; |
Manuel Pégourié-Gonnard | 4956fd7 | 2014-09-24 11:13:44 +0200 | [diff] [blame] | 5443 | ssl->in_window |= 1; |
| 5444 | } |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5445 | |
| 5446 | ssl->in_window_top = rec_seqnum; |
| 5447 | } |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5448 | else |
| 5449 | { |
| 5450 | /* Mark that number as seen in the current window */ |
Manuel Pégourié-Gonnard | 4956fd7 | 2014-09-24 11:13:44 +0200 | [diff] [blame] | 5451 | uint64_t bit = ssl->in_window_top - rec_seqnum; |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5452 | |
| 5453 | if( bit < 64 ) /* Always true, but be extra sure */ |
| 5454 | ssl->in_window |= (uint64_t) 1 << bit; |
| 5455 | } |
| 5456 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5457 | #endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */ |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5458 | |
Manuel Pégourié-Gonnard | ddfe5d2 | 2015-09-09 12:46:16 +0200 | [diff] [blame] | 5459 | #if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5460 | /* Forward declaration */ |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 5461 | static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ); |
| 5462 | |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5463 | /* |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5464 | * Without any SSL context, check if a datagram looks like a ClientHello with |
| 5465 | * a valid cookie, and if it doesn't, generate a HelloVerifyRequest message. |
Simon Butcher | 0789aed | 2015-09-11 17:15:17 +0100 | [diff] [blame] | 5466 | * Both input and output include full DTLS headers. |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5467 | * |
| 5468 | * - if cookie is valid, return 0 |
| 5469 | * - if ClientHello looks superficially valid but cookie is not, |
| 5470 | * fill obuf and set olen, then |
| 5471 | * return MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED |
| 5472 | * - otherwise return a specific error code |
| 5473 | */ |
| 5474 | static int ssl_check_dtls_clihlo_cookie( |
| 5475 | mbedtls_ssl_cookie_write_t *f_cookie_write, |
| 5476 | mbedtls_ssl_cookie_check_t *f_cookie_check, |
| 5477 | void *p_cookie, |
| 5478 | const unsigned char *cli_id, size_t cli_id_len, |
| 5479 | const unsigned char *in, size_t in_len, |
| 5480 | unsigned char *obuf, size_t buf_len, size_t *olen ) |
| 5481 | { |
| 5482 | size_t sid_len, cookie_len; |
| 5483 | unsigned char *p; |
| 5484 | |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5485 | /* |
| 5486 | * Structure of ClientHello with record and handshake headers, |
| 5487 | * and expected values. We don't need to check a lot, more checks will be |
| 5488 | * done when actually parsing the ClientHello - skipping those checks |
| 5489 | * avoids code duplication and does not make cookie forging any easier. |
| 5490 | * |
| 5491 | * 0-0 ContentType type; copied, must be handshake |
| 5492 | * 1-2 ProtocolVersion version; copied |
| 5493 | * 3-4 uint16 epoch; copied, must be 0 |
| 5494 | * 5-10 uint48 sequence_number; copied |
| 5495 | * 11-12 uint16 length; (ignored) |
| 5496 | * |
| 5497 | * 13-13 HandshakeType msg_type; (ignored) |
| 5498 | * 14-16 uint24 length; (ignored) |
| 5499 | * 17-18 uint16 message_seq; copied |
| 5500 | * 19-21 uint24 fragment_offset; copied, must be 0 |
| 5501 | * 22-24 uint24 fragment_length; (ignored) |
| 5502 | * |
| 5503 | * 25-26 ProtocolVersion client_version; (ignored) |
| 5504 | * 27-58 Random random; (ignored) |
| 5505 | * 59-xx SessionID session_id; 1 byte len + sid_len content |
| 5506 | * 60+ opaque cookie<0..2^8-1>; 1 byte len + content |
| 5507 | * ... |
| 5508 | * |
| 5509 | * Minimum length is 61 bytes. |
| 5510 | */ |
| 5511 | if( in_len < 61 || |
| 5512 | in[0] != MBEDTLS_SSL_MSG_HANDSHAKE || |
| 5513 | in[3] != 0 || in[4] != 0 || |
| 5514 | in[19] != 0 || in[20] != 0 || in[21] != 0 ) |
| 5515 | { |
| 5516 | return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO ); |
| 5517 | } |
| 5518 | |
| 5519 | sid_len = in[59]; |
| 5520 | if( sid_len > in_len - 61 ) |
| 5521 | return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO ); |
| 5522 | |
| 5523 | cookie_len = in[60 + sid_len]; |
| 5524 | if( cookie_len > in_len - 60 ) |
| 5525 | return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO ); |
| 5526 | |
| 5527 | if( f_cookie_check( p_cookie, in + sid_len + 61, cookie_len, |
| 5528 | cli_id, cli_id_len ) == 0 ) |
| 5529 | { |
| 5530 | /* Valid cookie */ |
| 5531 | return( 0 ); |
| 5532 | } |
| 5533 | |
| 5534 | /* |
| 5535 | * If we get here, we've got an invalid cookie, let's prepare HVR. |
| 5536 | * |
| 5537 | * 0-0 ContentType type; copied |
| 5538 | * 1-2 ProtocolVersion version; copied |
| 5539 | * 3-4 uint16 epoch; copied |
| 5540 | * 5-10 uint48 sequence_number; copied |
| 5541 | * 11-12 uint16 length; olen - 13 |
| 5542 | * |
| 5543 | * 13-13 HandshakeType msg_type; hello_verify_request |
| 5544 | * 14-16 uint24 length; olen - 25 |
| 5545 | * 17-18 uint16 message_seq; copied |
| 5546 | * 19-21 uint24 fragment_offset; copied |
| 5547 | * 22-24 uint24 fragment_length; olen - 25 |
| 5548 | * |
| 5549 | * 25-26 ProtocolVersion server_version; 0xfe 0xff |
| 5550 | * 27-27 opaque cookie<0..2^8-1>; cookie_len = olen - 27, cookie |
| 5551 | * |
| 5552 | * Minimum length is 28. |
| 5553 | */ |
| 5554 | if( buf_len < 28 ) |
| 5555 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| 5556 | |
| 5557 | /* Copy most fields and adapt others */ |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 5558 | mbedtls_platform_memcpy( obuf, in, 25 ); |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5559 | obuf[13] = MBEDTLS_SSL_HS_HELLO_VERIFY_REQUEST; |
| 5560 | obuf[25] = 0xfe; |
| 5561 | obuf[26] = 0xff; |
| 5562 | |
| 5563 | /* Generate and write actual cookie */ |
| 5564 | p = obuf + 28; |
| 5565 | if( f_cookie_write( p_cookie, |
| 5566 | &p, obuf + buf_len, cli_id, cli_id_len ) != 0 ) |
| 5567 | { |
| 5568 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 5569 | } |
| 5570 | |
| 5571 | *olen = p - obuf; |
| 5572 | |
| 5573 | /* Go back and fill length fields */ |
| 5574 | obuf[27] = (unsigned char)( *olen - 28 ); |
| 5575 | |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 5576 | (void)mbedtls_platform_put_uint24_be( &obuf[14], ( *olen - 25 ) ); |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 5577 | obuf[22] = obuf[14]; |
| 5578 | obuf[23] = obuf[15]; |
| 5579 | obuf[24] = obuf[16]; |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5580 | |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 5581 | (void)mbedtls_platform_put_uint16_be( &obuf[11], ( *olen - 13 ) ); |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5582 | |
| 5583 | return( MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED ); |
| 5584 | } |
| 5585 | |
| 5586 | /* |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5587 | * Handle possible client reconnect with the same UDP quadruplet |
| 5588 | * (RFC 6347 Section 4.2.8). |
| 5589 | * |
| 5590 | * Called by ssl_parse_record_header() in case we receive an epoch 0 record |
| 5591 | * that looks like a ClientHello. |
| 5592 | * |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5593 | * - if the input looks like a ClientHello without cookies, |
Manuel Pégourié-Gonnard | 731d7c0 | 2020-04-01 09:58:39 +0200 | [diff] [blame] | 5594 | * send back HelloVerifyRequest, then return 0 |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5595 | * - if the input looks like a ClientHello with a valid cookie, |
| 5596 | * reset the session of the current context, and |
Manuel Pégourié-Gonnard | be619c1 | 2015-09-08 11:21:21 +0200 | [diff] [blame] | 5597 | * return MBEDTLS_ERR_SSL_CLIENT_RECONNECT |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5598 | * - if anything goes wrong, return a specific error code |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5599 | * |
Manuel Pégourié-Gonnard | 731d7c0 | 2020-04-01 09:58:39 +0200 | [diff] [blame] | 5600 | * This function is called (through ssl_check_client_reconnect()) when an |
| 5601 | * unexpected record is found in ssl_get_next_record(), which will discard the |
| 5602 | * record if we return 0, and bubble up the return value otherwise (this |
| 5603 | * includes the case of MBEDTLS_ERR_SSL_CLIENT_RECONNECT and of unexpected |
| 5604 | * errors, and is the right thing to do in both cases). |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5605 | */ |
| 5606 | static int ssl_handle_possible_reconnect( mbedtls_ssl_context *ssl ) |
| 5607 | { |
| 5608 | int ret; |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5609 | size_t len; |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5610 | |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 5611 | if( ssl->conf->f_cookie_write == NULL || |
| 5612 | ssl->conf->f_cookie_check == NULL ) |
| 5613 | { |
| 5614 | /* If we can't use cookies to verify reachability of the peer, |
| 5615 | * drop the record. */ |
Manuel Pégourié-Gonnard | 731d7c0 | 2020-04-01 09:58:39 +0200 | [diff] [blame] | 5616 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "no cookie callbacks, " |
| 5617 | "can't check reconnect validity" ) ); |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 5618 | return( 0 ); |
| 5619 | } |
| 5620 | |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5621 | ret = ssl_check_dtls_clihlo_cookie( |
| 5622 | ssl->conf->f_cookie_write, |
| 5623 | ssl->conf->f_cookie_check, |
| 5624 | ssl->conf->p_cookie, |
| 5625 | ssl->cli_id, ssl->cli_id_len, |
| 5626 | ssl->in_buf, ssl->in_left, |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 5627 | ssl->out_buf, MBEDTLS_SSL_OUT_CONTENT_LEN, &len ); |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5628 | |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5629 | MBEDTLS_SSL_DEBUG_RET( 2, "ssl_check_dtls_clihlo_cookie", ret ); |
| 5630 | |
| 5631 | if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED ) |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5632 | { |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 5633 | int send_ret; |
| 5634 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "sending HelloVerifyRequest" ) ); |
| 5635 | MBEDTLS_SSL_DEBUG_BUF( 4, "output record sent to network", |
| 5636 | ssl->out_buf, len ); |
Brian J Murray | 1903fb3 | 2016-11-06 04:45:15 -0800 | [diff] [blame] | 5637 | /* Don't check write errors as we can't do anything here. |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5638 | * If the error is permanent we'll catch it later, |
| 5639 | * if it's not, then hopefully it'll work next time. */ |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 5640 | send_ret = mbedtls_ssl_get_send( ssl )( ssl->p_bio, ssl->out_buf, len ); |
| 5641 | MBEDTLS_SSL_DEBUG_RET( 2, "mbedtls_ssl_get_send", send_ret ); |
| 5642 | (void) send_ret; |
Manuel Pégourié-Gonnard | 731d7c0 | 2020-04-01 09:58:39 +0200 | [diff] [blame] | 5643 | return( 0 ); |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5644 | } |
| 5645 | |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5646 | if( ret == 0 ) |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5647 | { |
Andrzej Kurek | 825ebd4 | 2020-05-18 11:47:25 -0400 | [diff] [blame] | 5648 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "cookie is valid, resetting context" ) ); |
Manuel Pégourié-Gonnard | 62c74bb | 2015-09-08 17:50:29 +0200 | [diff] [blame] | 5649 | if( ( ret = ssl_session_reset_int( ssl, 1 ) ) != 0 ) |
| 5650 | { |
| 5651 | MBEDTLS_SSL_DEBUG_RET( 1, "reset", ret ); |
| 5652 | return( ret ); |
| 5653 | } |
| 5654 | |
| 5655 | return( MBEDTLS_ERR_SSL_CLIENT_RECONNECT ); |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5656 | } |
| 5657 | |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5658 | return( ret ); |
| 5659 | } |
Manuel Pégourié-Gonnard | ddfe5d2 | 2015-09-09 12:46:16 +0200 | [diff] [blame] | 5660 | #endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */ |
Manuel Pégourié-Gonnard | 11331fc | 2015-09-08 10:30:55 +0200 | [diff] [blame] | 5661 | |
Hanno Becker | 46483f1 | 2019-05-03 13:25:54 +0100 | [diff] [blame] | 5662 | static int ssl_check_record_type( uint8_t record_type ) |
| 5663 | { |
| 5664 | if( record_type != MBEDTLS_SSL_MSG_HANDSHAKE && |
| 5665 | record_type != MBEDTLS_SSL_MSG_ALERT && |
| 5666 | record_type != MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC && |
| 5667 | record_type != MBEDTLS_SSL_MSG_APPLICATION_DATA ) |
| 5668 | { |
| 5669 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 5670 | } |
| 5671 | |
| 5672 | return( 0 ); |
| 5673 | } |
| 5674 | |
Manuel Pégourié-Gonnard | 7a7e140 | 2014-09-24 10:52:58 +0200 | [diff] [blame] | 5675 | /* |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5676 | * ContentType type; |
| 5677 | * ProtocolVersion version; |
| 5678 | * uint16 epoch; // DTLS only |
| 5679 | * uint48 sequence_number; // DTLS only |
| 5680 | * uint16 length; |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5681 | * |
| 5682 | * Return 0 if header looks sane (and, for DTLS, the record is expected) |
Simon Butcher | 207990d | 2015-12-16 01:51:30 +0000 | [diff] [blame] | 5683 | * MBEDTLS_ERR_SSL_INVALID_RECORD if the header looks bad, |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5684 | * MBEDTLS_ERR_SSL_UNEXPECTED_RECORD (DTLS only) if sane but unexpected. |
| 5685 | * |
| 5686 | * With DTLS, mbedtls_ssl_read_record() will: |
Simon Butcher | 207990d | 2015-12-16 01:51:30 +0000 | [diff] [blame] | 5687 | * 1. proceed with the record if this function returns 0 |
| 5688 | * 2. drop only the current record if this function returns UNEXPECTED_RECORD |
| 5689 | * 3. return CLIENT_RECONNECT if this function return that value |
| 5690 | * 4. drop the whole datagram if this function returns anything else. |
| 5691 | * Point 2 is needed when the peer is resending, and we have already received |
| 5692 | * the first record from a datagram but are still waiting for the others. |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5693 | */ |
Hanno Becker | 21fc61c | 2019-07-12 11:10:16 +0100 | [diff] [blame] | 5694 | static int ssl_parse_record_header( mbedtls_ssl_context const *ssl, |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5695 | unsigned char *buf, |
| 5696 | size_t len, |
| 5697 | mbedtls_record *rec ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5698 | { |
Manuel Pégourié-Gonnard | abc7e3b | 2014-02-11 18:15:03 +0100 | [diff] [blame] | 5699 | int major_ver, minor_ver; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5700 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5701 | size_t const rec_hdr_type_offset = 0; |
| 5702 | size_t const rec_hdr_type_len = 1; |
Manuel Pégourié-Gonnard | 64dffc5 | 2014-09-02 13:39:16 +0200 | [diff] [blame] | 5703 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5704 | size_t const rec_hdr_version_offset = rec_hdr_type_offset + |
| 5705 | rec_hdr_type_len; |
| 5706 | size_t const rec_hdr_version_len = 2; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5707 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5708 | size_t const rec_hdr_ctr_len = 8; |
| 5709 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | 6181761 | 2019-07-25 10:13:02 +0100 | [diff] [blame] | 5710 | uint32_t rec_epoch; |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5711 | size_t const rec_hdr_ctr_offset = rec_hdr_version_offset + |
| 5712 | rec_hdr_version_len; |
| 5713 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 5714 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5715 | size_t const rec_hdr_cid_offset = rec_hdr_ctr_offset + |
| 5716 | rec_hdr_ctr_len; |
Hanno Becker | 6181761 | 2019-07-25 10:13:02 +0100 | [diff] [blame] | 5717 | size_t rec_hdr_cid_len = 0; |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5718 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
| 5719 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 5720 | |
| 5721 | size_t rec_hdr_len_offset; /* To be determined */ |
| 5722 | size_t const rec_hdr_len_len = 2; |
| 5723 | |
| 5724 | /* |
| 5725 | * Check minimum lengths for record header. |
| 5726 | */ |
| 5727 | |
| 5728 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 5729 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
| 5730 | { |
| 5731 | rec_hdr_len_offset = rec_hdr_ctr_offset + rec_hdr_ctr_len; |
| 5732 | } |
| 5733 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 5734 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 5735 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 5736 | { |
| 5737 | rec_hdr_len_offset = rec_hdr_version_offset + rec_hdr_version_len; |
| 5738 | } |
| 5739 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 5740 | |
| 5741 | if( len < rec_hdr_len_offset + rec_hdr_len_len ) |
| 5742 | { |
| 5743 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "datagram of length %u too small to hold DTLS record header of length %u", |
| 5744 | (unsigned) len, |
| 5745 | (unsigned)( rec_hdr_len_len + rec_hdr_len_len ) ) ); |
| 5746 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 5747 | } |
| 5748 | |
| 5749 | /* |
| 5750 | * Parse and validate record content type |
| 5751 | */ |
| 5752 | |
| 5753 | rec->type = buf[ rec_hdr_type_offset ]; |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5754 | |
| 5755 | /* Check record content type */ |
| 5756 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
| 5757 | rec->cid_len = 0; |
| 5758 | |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 5759 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5760 | mbedtls_ssl_conf_get_cid_len( ssl->conf ) != 0 && |
| 5761 | rec->type == MBEDTLS_SSL_MSG_CID ) |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5762 | { |
| 5763 | /* Shift pointers to account for record header including CID |
| 5764 | * struct { |
| 5765 | * ContentType special_type = tls12_cid; |
| 5766 | * ProtocolVersion version; |
| 5767 | * uint16 epoch; |
| 5768 | * uint48 sequence_number; |
Hanno Becker | 3b2bf5b | 2019-05-23 17:03:19 +0100 | [diff] [blame] | 5769 | * opaque cid[cid_length]; // Additional field compared to |
| 5770 | * // default DTLS record format |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5771 | * uint16 length; |
| 5772 | * opaque enc_content[DTLSCiphertext.length]; |
| 5773 | * } DTLSCiphertext; |
| 5774 | */ |
| 5775 | |
| 5776 | /* So far, we only support static CID lengths |
| 5777 | * fixed in the configuration. */ |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5778 | rec_hdr_cid_len = mbedtls_ssl_conf_get_cid_len( ssl->conf ); |
| 5779 | rec_hdr_len_offset += rec_hdr_cid_len; |
Hanno Becker | de7d6d3 | 2019-07-10 14:50:10 +0100 | [diff] [blame] | 5780 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5781 | if( len < rec_hdr_len_offset + rec_hdr_len_len ) |
Hanno Becker | de7d6d3 | 2019-07-10 14:50:10 +0100 | [diff] [blame] | 5782 | { |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5783 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "datagram of length %u too small to hold DTLS record header including CID, length %u", |
| 5784 | (unsigned) len, |
| 5785 | (unsigned)( rec_hdr_len_offset + rec_hdr_len_len ) ) ); |
Hanno Becker | 2982346 | 2019-07-10 14:53:43 +0100 | [diff] [blame] | 5786 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
Hanno Becker | de7d6d3 | 2019-07-10 14:50:10 +0100 | [diff] [blame] | 5787 | } |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5788 | |
Manuel Pégourié-Gonnard | f3a15b3 | 2019-08-02 10:17:15 +0200 | [diff] [blame] | 5789 | /* configured CID len is guaranteed at most 255, see |
| 5790 | * MBEDTLS_SSL_CID_OUT_LEN_MAX in check_config.h */ |
| 5791 | rec->cid_len = (uint8_t) rec_hdr_cid_len; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 5792 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 5793 | memcpy( rec->cid, buf + rec_hdr_cid_offset, rec_hdr_cid_len ); |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5794 | } |
| 5795 | else |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 5796 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Manuel Pégourié-Gonnard | edcbe54 | 2014-08-11 19:27:24 +0200 | [diff] [blame] | 5797 | { |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5798 | if( ssl_check_record_type( rec->type ) ) |
| 5799 | { |
Hanno Becker | 03e2db6 | 2019-07-12 14:40:00 +0100 | [diff] [blame] | 5800 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "unknown record type %u", |
| 5801 | (unsigned) rec->type ) ); |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5802 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 5803 | } |
Manuel Pégourié-Gonnard | edcbe54 | 2014-08-11 19:27:24 +0200 | [diff] [blame] | 5804 | } |
| 5805 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5806 | /* |
| 5807 | * Parse and validate record version |
| 5808 | */ |
| 5809 | |
Hanno Becker | 8061c6e | 2019-07-26 08:07:03 +0100 | [diff] [blame] | 5810 | rec->ver[0] = buf[ rec_hdr_version_offset + 0 ]; |
| 5811 | rec->ver[1] = buf[ rec_hdr_version_offset + 1 ]; |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5812 | mbedtls_ssl_read_version( &major_ver, &minor_ver, |
| 5813 | ssl->conf->transport, |
Hanno Becker | 8061c6e | 2019-07-26 08:07:03 +0100 | [diff] [blame] | 5814 | &rec->ver[0] ); |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5815 | |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 5816 | if( major_ver != mbedtls_ssl_get_major_ver( ssl ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5817 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5818 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "major version mismatch" ) ); |
| 5819 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5820 | } |
| 5821 | |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 5822 | if( mbedtls_ssl_ver_gt( minor_ver, |
| 5823 | mbedtls_ssl_conf_get_max_minor_ver( ssl->conf ) ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5824 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5825 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "minor version mismatch" ) ); |
| 5826 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5827 | } |
| 5828 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5829 | /* |
| 5830 | * Parse/Copy record sequence number. |
| 5831 | */ |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5832 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5833 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 5834 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
| 5835 | { |
| 5836 | /* Copy explicit record sequence number from input buffer. */ |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 5837 | /* Not using more secure mbedtls_platform_memcpy as sequence number is public */ |
| 5838 | memcpy( &rec->ctr[0], buf + rec_hdr_ctr_offset, |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5839 | rec_hdr_ctr_len ); |
| 5840 | } |
| 5841 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 5842 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 5843 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 5844 | { |
| 5845 | /* Copy implicit record sequence number from SSL context structure. */ |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 5846 | /* Not using more secure mbedtls_platform_memcpy as sequence number is public */ |
| 5847 | memcpy( &rec->ctr[0], ssl->in_ctr, rec_hdr_ctr_len ); |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5848 | } |
| 5849 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5850 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5851 | /* |
| 5852 | * Parse record length. |
| 5853 | */ |
| 5854 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5855 | rec->data_offset = rec_hdr_len_offset + rec_hdr_len_len; |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 5856 | rec->data_len = mbedtls_platform_get_uint16_be( &buf[rec_hdr_len_offset] ); |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5857 | MBEDTLS_SSL_DEBUG_BUF( 4, "input record header", buf, rec->data_offset ); |
| 5858 | |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5859 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "input record: msgtype = %d, " |
Hanno Becker | d8f7c4a | 2019-05-23 17:03:44 +0100 | [diff] [blame] | 5860 | "version = [%d:%d], msglen = %d", |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5861 | rec->type, |
| 5862 | major_ver, minor_ver, rec->data_len ) ); |
| 5863 | |
| 5864 | rec->buf = buf; |
| 5865 | rec->buf_len = rec->data_offset + rec->data_len; |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 5866 | |
Hanno Becker | ec01408 | 2019-07-26 08:20:27 +0100 | [diff] [blame] | 5867 | if( rec->data_len == 0 ) |
| 5868 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 5869 | |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5870 | /* |
Hanno Becker | 52c6dc6 | 2017-05-26 16:07:36 +0100 | [diff] [blame] | 5871 | * DTLS-related tests. |
| 5872 | * Check epoch before checking length constraint because |
| 5873 | * the latter varies with the epoch. E.g., if a ChangeCipherSpec |
| 5874 | * message gets duplicated before the corresponding Finished message, |
| 5875 | * the second ChangeCipherSpec should be discarded because it belongs |
| 5876 | * to an old epoch, but not because its length is shorter than |
| 5877 | * the minimum record length for packets using the new record transform. |
| 5878 | * Note that these two kinds of failures are handled differently, |
| 5879 | * as an unexpected record is silently skipped but an invalid |
| 5880 | * record leads to the entire datagram being dropped. |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5881 | */ |
| 5882 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 5883 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5884 | { |
Arto Kinnunen | a3fa06e | 2019-09-09 12:22:51 +0300 | [diff] [blame] | 5885 | rec_epoch = (uint32_t)mbedtls_platform_get_uint16_be( rec->ctr ); |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5886 | |
Hanno Becker | e045277 | 2019-07-10 17:12:07 +0100 | [diff] [blame] | 5887 | /* Check that the datagram is large enough to contain a record |
| 5888 | * of the advertised length. */ |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5889 | if( len < rec->data_offset + rec->data_len ) |
Hanno Becker | e045277 | 2019-07-10 17:12:07 +0100 | [diff] [blame] | 5890 | { |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 5891 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Datagram of length %u too small to contain record of advertised length %u.", |
| 5892 | (unsigned) len, |
| 5893 | (unsigned)( rec->data_offset + rec->data_len ) ) ); |
Hanno Becker | e045277 | 2019-07-10 17:12:07 +0100 | [diff] [blame] | 5894 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 5895 | } |
Hanno Becker | 6c0e53c | 2019-07-10 17:20:01 +0100 | [diff] [blame] | 5896 | |
Hanno Becker | 6c0e53c | 2019-07-10 17:20:01 +0100 | [diff] [blame] | 5897 | /* Records from other, non-matching epochs are silently discarded. |
| 5898 | * (The case of same-port Client reconnects must be considered in |
| 5899 | * the caller). */ |
Hanno Becker | c1c173c | 2019-07-19 10:59:12 +0100 | [diff] [blame] | 5900 | if( rec_epoch != ssl->in_epoch ) |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5901 | { |
| 5902 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "record from another epoch: " |
| 5903 | "expected %d, received %d", |
| 5904 | ssl->in_epoch, rec_epoch ) ); |
Hanno Becker | c1c173c | 2019-07-19 10:59:12 +0100 | [diff] [blame] | 5905 | |
| 5906 | /* Records from the next epoch are considered for buffering |
| 5907 | * (concretely: early Finished messages). */ |
| 5908 | if( rec_epoch == (unsigned) ssl->in_epoch + 1 ) |
| 5909 | { |
| 5910 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Consider record for buffering" ) ); |
| 5911 | return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); |
| 5912 | } |
| 5913 | |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 5914 | return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ); |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5915 | } |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5916 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
Hanno Becker | 6c0e53c | 2019-07-10 17:20:01 +0100 | [diff] [blame] | 5917 | /* For records from the correct epoch, check whether their |
| 5918 | * sequence number has been seen before. */ |
Arto Kinnunen | 8a8488c | 2019-10-29 11:13:33 +0200 | [diff] [blame] | 5919 | else if( mbedtls_ssl_dtls_record_replay_check( (mbedtls_ssl_context *) ssl, |
| 5920 | &rec->ctr[0] ) != 0 ) |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 5921 | { |
| 5922 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "replayed record" ) ); |
| 5923 | return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ); |
| 5924 | } |
| 5925 | #endif |
| 5926 | } |
| 5927 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 5928 | |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5929 | return( 0 ); |
| 5930 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5931 | |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 5932 | |
| 5933 | #if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C) |
| 5934 | static int ssl_check_client_reconnect( mbedtls_ssl_context *ssl ) |
| 5935 | { |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 5936 | unsigned int rec_epoch = (unsigned int) |
| 5937 | mbedtls_platform_get_uint16_be( &ssl->in_ctr[0] ); |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 5938 | |
| 5939 | /* |
| 5940 | * Check for an epoch 0 ClientHello. We can't use in_msg here to |
| 5941 | * access the first byte of record content (handshake type), as we |
| 5942 | * have an active transform (possibly iv_len != 0), so use the |
| 5943 | * fact that the record header len is 13 instead. |
| 5944 | */ |
| 5945 | if( rec_epoch == 0 && |
| 5946 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 5947 | MBEDTLS_SSL_IS_SERVER && |
| 5948 | ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER && |
| 5949 | ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 5950 | ssl->in_left > 13 && |
| 5951 | ssl->in_buf[13] == MBEDTLS_SSL_HS_CLIENT_HELLO ) |
| 5952 | { |
| 5953 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "possible client reconnect " |
| 5954 | "from the same port" ) ); |
| 5955 | return( ssl_handle_possible_reconnect( ssl ) ); |
| 5956 | } |
| 5957 | |
| 5958 | return( 0 ); |
| 5959 | } |
| 5960 | #endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */ |
| 5961 | |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5962 | /* |
Manuel Pégourié-Gonnard | ae48d86 | 2020-01-03 12:18:49 +0100 | [diff] [blame] | 5963 | * If applicable, decrypt record content |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5964 | */ |
Hanno Becker | a89610a | 2019-07-11 13:07:45 +0100 | [diff] [blame] | 5965 | static int ssl_prepare_record_content( mbedtls_ssl_context *ssl, |
| 5966 | mbedtls_record *rec ) |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 5967 | { |
| 5968 | int ret, done = 0; |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 5969 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5970 | MBEDTLS_SSL_DEBUG_BUF( 4, "input record from network", |
Hanno Becker | a89610a | 2019-07-11 13:07:45 +0100 | [diff] [blame] | 5971 | rec->buf, rec->buf_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5972 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5973 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 5974 | if( mbedtls_ssl_hw_record_read != NULL ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5975 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5976 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_read()" ) ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5977 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5978 | ret = mbedtls_ssl_hw_record_read( ssl ); |
| 5979 | if( ret != 0 && ret != MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5980 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5981 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_read", ret ); |
| 5982 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5983 | } |
Paul Bakker | c787811 | 2012-12-19 14:41:14 +0100 | [diff] [blame] | 5984 | |
| 5985 | if( ret == 0 ) |
| 5986 | done = 1; |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 5987 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5988 | #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 5989 | if( !done && ssl->transform_in != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5990 | { |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 5991 | unsigned char const old_msg_type = rec->type; |
| 5992 | |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 5993 | if( ( ret = mbedtls_ssl_decrypt_buf( ssl, ssl->transform_in, |
Hanno Becker | a89610a | 2019-07-11 13:07:45 +0100 | [diff] [blame] | 5994 | rec ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 5995 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 5996 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decrypt_buf", ret ); |
Hanno Becker | e8eff9a | 2019-05-14 11:30:10 +0100 | [diff] [blame] | 5997 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 5998 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | e8eff9a | 2019-05-14 11:30:10 +0100 | [diff] [blame] | 5999 | if( ret == MBEDTLS_ERR_SSL_UNEXPECTED_CID && |
Hanno Becker | e0200da | 2019-06-13 09:23:43 +0100 | [diff] [blame] | 6000 | mbedtls_ssl_conf_get_ignore_unexpected_cid( ssl->conf ) |
| 6001 | == MBEDTLS_SSL_UNEXPECTED_CID_IGNORE ) |
Hanno Becker | e8eff9a | 2019-05-14 11:30:10 +0100 | [diff] [blame] | 6002 | { |
Hanno Becker | 675c4d6 | 2019-05-24 10:11:06 +0100 | [diff] [blame] | 6003 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ignoring unexpected CID" ) ); |
Hanno Becker | 687e0fb | 2019-05-08 13:02:55 +0100 | [diff] [blame] | 6004 | ret = MBEDTLS_ERR_SSL_CONTINUE_PROCESSING; |
Hanno Becker | e8eff9a | 2019-05-14 11:30:10 +0100 | [diff] [blame] | 6005 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 6006 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 687e0fb | 2019-05-08 13:02:55 +0100 | [diff] [blame] | 6007 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 6008 | return( ret ); |
| 6009 | } |
| 6010 | |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 6011 | if( old_msg_type != rec->type ) |
Hanno Becker | 93012fe | 2018-08-07 14:30:18 +0100 | [diff] [blame] | 6012 | { |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 6013 | MBEDTLS_SSL_DEBUG_MSG( 4, ( "record type after decrypt (before %d): %d", |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 6014 | old_msg_type, rec->type ) ); |
Hanno Becker | 93012fe | 2018-08-07 14:30:18 +0100 | [diff] [blame] | 6015 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 6016 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 6017 | MBEDTLS_SSL_DEBUG_BUF( 4, "input payload after decrypt", |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 6018 | rec->buf + rec->data_offset, rec->data_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 6019 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 6020 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 6021 | /* We have already checked the record content type |
| 6022 | * in ssl_parse_record_header(), failing or silently |
| 6023 | * dropping the record in the case of an unknown type. |
| 6024 | * |
| 6025 | * Since with the use of CIDs, the record content type |
| 6026 | * might change during decryption, re-check the record |
| 6027 | * content type, but treat a failure as fatal this time. */ |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 6028 | if( ssl_check_record_type( rec->type ) ) |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 6029 | { |
| 6030 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "unknown record type" ) ); |
| 6031 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 6032 | } |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 6033 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | ff3e9c2 | 2019-05-08 11:57:13 +0100 | [diff] [blame] | 6034 | |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 6035 | if( rec->data_len == 0 ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6036 | { |
| 6037 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 6038 | if( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_3 |
Hanno Becker | 106f3da | 2019-07-12 09:35:58 +0100 | [diff] [blame] | 6039 | && rec->type != MBEDTLS_SSL_MSG_APPLICATION_DATA ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6040 | { |
| 6041 | /* TLS v1.2 explicitly disallows zero-length messages which are not application data */ |
| 6042 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid zero-length message type: %d", ssl->in_msgtype ) ); |
| 6043 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 6044 | } |
| 6045 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 6046 | |
| 6047 | ssl->nb_zero++; |
| 6048 | |
| 6049 | /* |
| 6050 | * Three or more empty messages may be a DoS attack |
| 6051 | * (excessive CPU consumption). |
| 6052 | */ |
| 6053 | if( ssl->nb_zero > 3 ) |
| 6054 | { |
| 6055 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "received four consecutive empty " |
Hanno Becker | 70463db | 2019-05-08 10:38:32 +0100 | [diff] [blame] | 6056 | "messages, possible DoS attack" ) ); |
| 6057 | /* Treat the records as if they were not properly authenticated, |
| 6058 | * thereby failing the connection if we see more than allowed |
| 6059 | * by the configured bad MAC threshold. */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6060 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
| 6061 | } |
| 6062 | } |
| 6063 | else |
| 6064 | ssl->nb_zero = 0; |
| 6065 | |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6066 | /* Only needed for TLS, as with DTLS in_ctr is read from the header */ |
| 6067 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 6068 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6069 | { |
| 6070 | unsigned i; |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6071 | for( i = 8; i > 0; i-- ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6072 | if( ++ssl->in_ctr[i - 1] != 0 ) |
| 6073 | break; |
| 6074 | |
Manuel Pégourié-Gonnard | 8794a42 | 2019-06-11 10:04:57 +0200 | [diff] [blame] | 6075 | /* The loop goes to its end only if the counter is wrapping around */ |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6076 | if( i == 0 ) |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6077 | { |
| 6078 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "incoming message counter would wrap" ) ); |
| 6079 | return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING ); |
| 6080 | } |
| 6081 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6082 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Hanno Becker | 4c6876b | 2017-12-27 21:28:58 +0000 | [diff] [blame] | 6083 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 6084 | } |
| 6085 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6086 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 6087 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | b47368a | 2014-09-24 13:29:58 +0200 | [diff] [blame] | 6088 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6089 | mbedtls_ssl_dtls_replay_update( ssl ); |
Manuel Pégourié-Gonnard | b47368a | 2014-09-24 13:29:58 +0200 | [diff] [blame] | 6090 | } |
| 6091 | #endif |
| 6092 | |
Hanno Becker | f024285 | 2019-07-09 17:30:02 +0100 | [diff] [blame] | 6093 | /* Check actual (decrypted) record content length against |
| 6094 | * configured maximum. */ |
| 6095 | if( ssl->in_msglen > MBEDTLS_SSL_IN_CONTENT_LEN ) |
| 6096 | { |
| 6097 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) ); |
| 6098 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 6099 | } |
| 6100 | |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6101 | return( 0 ); |
| 6102 | } |
| 6103 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6104 | static void ssl_handshake_wrapup_free_hs_transform( mbedtls_ssl_context *ssl ); |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 6105 | |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6106 | /* |
| 6107 | * Read a record. |
| 6108 | * |
Manuel Pégourié-Gonnard | fbdf06c | 2015-10-23 11:13:28 +0200 | [diff] [blame] | 6109 | * Silently ignore non-fatal alert (and for DTLS, invalid records as well, |
| 6110 | * RFC 6347 4.1.2.7) and continue reading until a valid record is found. |
| 6111 | * |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6112 | */ |
Hanno Becker | 1097b34 | 2018-08-15 14:09:41 +0100 | [diff] [blame] | 6113 | |
| 6114 | /* Helper functions for mbedtls_ssl_read_record(). */ |
| 6115 | static int ssl_consume_current_message( mbedtls_ssl_context *ssl ); |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6116 | static int ssl_get_next_record( mbedtls_ssl_context *ssl ); |
| 6117 | static int ssl_record_is_in_progress( mbedtls_ssl_context *ssl ); |
Hanno Becker | 4162b11 | 2018-08-15 14:05:04 +0100 | [diff] [blame] | 6118 | |
Hanno Becker | 327c93b | 2018-08-15 13:56:18 +0100 | [diff] [blame] | 6119 | int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl, |
Hanno Becker | 3a0aad1 | 2018-08-20 09:44:02 +0100 | [diff] [blame] | 6120 | unsigned update_hs_digest ) |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6121 | { |
| 6122 | int ret; |
| 6123 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6124 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> read record" ) ); |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6125 | |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6126 | if( ssl->keep_current_message == 0 ) |
| 6127 | { |
| 6128 | do { |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6129 | |
Hanno Becker | 2699459 | 2018-08-15 14:14:59 +0100 | [diff] [blame] | 6130 | ret = ssl_consume_current_message( ssl ); |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 6131 | if( ret != 0 ) |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6132 | return( ret ); |
Hanno Becker | 2699459 | 2018-08-15 14:14:59 +0100 | [diff] [blame] | 6133 | |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6134 | if( ssl_record_is_in_progress( ssl ) == 0 ) |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6135 | { |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6136 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 6137 | int have_buffered = 0; |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6138 | |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6139 | /* We only check for buffered messages if the |
| 6140 | * current datagram is fully consumed. */ |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 6141 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | ef7afdf | 2018-08-28 17:16:31 +0100 | [diff] [blame] | 6142 | ssl_next_record_is_in_datagram( ssl ) == 0 ) |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6143 | { |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6144 | if( ssl_load_buffered_message( ssl ) == 0 ) |
| 6145 | have_buffered = 1; |
| 6146 | } |
| 6147 | |
| 6148 | if( have_buffered == 0 ) |
| 6149 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 6150 | { |
| 6151 | ret = ssl_get_next_record( ssl ); |
| 6152 | if( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ) |
| 6153 | continue; |
| 6154 | |
| 6155 | if( ret != 0 ) |
| 6156 | { |
Hanno Becker | c573ac3 | 2018-08-28 17:15:25 +0100 | [diff] [blame] | 6157 | MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_get_next_record" ), ret ); |
Hanno Becker | 42a6b04 | 2019-07-26 07:25:20 +0100 | [diff] [blame] | 6158 | ssl_send_pending_fatal_alert( ssl ); |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6159 | return( ret ); |
| 6160 | } |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6161 | } |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6162 | } |
| 6163 | |
| 6164 | ret = mbedtls_ssl_handle_message_type( ssl ); |
| 6165 | |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6166 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 6167 | if( ret == MBEDTLS_ERR_SSL_EARLY_MESSAGE ) |
| 6168 | { |
| 6169 | /* Buffer future message */ |
| 6170 | ret = ssl_buffer_message( ssl ); |
| 6171 | if( ret != 0 ) |
| 6172 | return( ret ); |
| 6173 | |
| 6174 | ret = MBEDTLS_ERR_SSL_CONTINUE_PROCESSING; |
| 6175 | } |
| 6176 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 6177 | |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 6178 | } while( MBEDTLS_ERR_SSL_NON_FATAL == ret || |
| 6179 | MBEDTLS_ERR_SSL_CONTINUE_PROCESSING == ret ); |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6180 | |
| 6181 | if( 0 != ret ) |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6182 | { |
Hanno Becker | 05c4fc8 | 2017-11-09 14:34:06 +0000 | [diff] [blame] | 6183 | MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_handle_message_type" ), ret ); |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6184 | return( ret ); |
| 6185 | } |
| 6186 | |
Hanno Becker | 327c93b | 2018-08-15 13:56:18 +0100 | [diff] [blame] | 6187 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
Hanno Becker | 3a0aad1 | 2018-08-20 09:44:02 +0100 | [diff] [blame] | 6188 | update_hs_digest == 1 ) |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6189 | { |
| 6190 | mbedtls_ssl_update_handshake_status( ssl ); |
| 6191 | } |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6192 | } |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6193 | else |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6194 | { |
Hanno Becker | 02f5907 | 2018-08-15 14:00:24 +0100 | [diff] [blame] | 6195 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "reuse previously read message" ) ); |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 6196 | ssl->keep_current_message = 0; |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6197 | } |
| 6198 | |
| 6199 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= read record" ) ); |
| 6200 | |
| 6201 | return( 0 ); |
| 6202 | } |
| 6203 | |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6204 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | ef7afdf | 2018-08-28 17:16:31 +0100 | [diff] [blame] | 6205 | static int ssl_next_record_is_in_datagram( mbedtls_ssl_context *ssl ) |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6206 | { |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6207 | if( ssl->in_left > ssl->next_record_offset ) |
| 6208 | return( 1 ); |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 6209 | |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6210 | return( 0 ); |
| 6211 | } |
| 6212 | |
| 6213 | static int ssl_load_buffered_message( mbedtls_ssl_context *ssl ) |
| 6214 | { |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6215 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6216 | mbedtls_ssl_hs_buffer * hs_buf; |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6217 | int ret = 0; |
| 6218 | |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6219 | if( hs == NULL ) |
| 6220 | return( -1 ); |
| 6221 | |
Hanno Becker | e00ae37 | 2018-08-20 09:39:42 +0100 | [diff] [blame] | 6222 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_load_buffered_messsage" ) ); |
| 6223 | |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6224 | if( ssl->state == MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC || |
| 6225 | ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) |
| 6226 | { |
| 6227 | /* Check if we have seen a ChangeCipherSpec before. |
| 6228 | * If yes, synthesize a CCS record. */ |
Hanno Becker | 4422bbb | 2018-08-20 09:40:19 +0100 | [diff] [blame] | 6229 | if( !hs->buffering.seen_ccs ) |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6230 | { |
| 6231 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "CCS not seen in the current flight" ) ); |
| 6232 | ret = -1; |
Hanno Becker | 0d4b376 | 2018-08-20 09:36:59 +0100 | [diff] [blame] | 6233 | goto exit; |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6234 | } |
| 6235 | |
Hanno Becker | 39b8bc9 | 2018-08-28 17:17:13 +0100 | [diff] [blame] | 6236 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Injecting buffered CCS message" ) ); |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6237 | ssl->in_msgtype = MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC; |
| 6238 | ssl->in_msglen = 1; |
| 6239 | ssl->in_msg[0] = 1; |
| 6240 | |
| 6241 | /* As long as they are equal, the exact value doesn't matter. */ |
| 6242 | ssl->in_left = 0; |
| 6243 | ssl->next_record_offset = 0; |
| 6244 | |
Hanno Becker | d7f8ae2 | 2018-08-16 09:45:56 +0100 | [diff] [blame] | 6245 | hs->buffering.seen_ccs = 0; |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6246 | goto exit; |
| 6247 | } |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6248 | |
Hanno Becker | b8f5014 | 2018-08-28 10:01:34 +0100 | [diff] [blame] | 6249 | #if defined(MBEDTLS_DEBUG_C) |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6250 | /* Debug only */ |
| 6251 | { |
| 6252 | unsigned offset; |
| 6253 | for( offset = 1; offset < MBEDTLS_SSL_MAX_BUFFERED_HS; offset++ ) |
| 6254 | { |
| 6255 | hs_buf = &hs->buffering.hs[offset]; |
| 6256 | if( hs_buf->is_valid == 1 ) |
| 6257 | { |
| 6258 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Future message with sequence number %u %s buffered.", |
| 6259 | hs->in_msg_seq + offset, |
Hanno Becker | a591c48 | 2018-08-28 17:20:00 +0100 | [diff] [blame] | 6260 | hs_buf->is_complete ? "fully" : "partially" ) ); |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6261 | } |
| 6262 | } |
| 6263 | } |
Hanno Becker | b8f5014 | 2018-08-28 10:01:34 +0100 | [diff] [blame] | 6264 | #endif /* MBEDTLS_DEBUG_C */ |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6265 | |
| 6266 | /* Check if we have buffered and/or fully reassembled the |
| 6267 | * next handshake message. */ |
| 6268 | hs_buf = &hs->buffering.hs[0]; |
| 6269 | if( ( hs_buf->is_valid == 1 ) && ( hs_buf->is_complete == 1 ) ) |
| 6270 | { |
| 6271 | /* Synthesize a record containing the buffered HS message. */ |
Arto Kinnunen | 84eeb4f | 2019-09-10 10:32:30 +0300 | [diff] [blame] | 6272 | size_t msg_len = mbedtls_platform_get_uint24_be( &hs_buf->data[1] ); |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6273 | |
| 6274 | /* Double-check that we haven't accidentally buffered |
| 6275 | * a message that doesn't fit into the input buffer. */ |
| 6276 | if( msg_len + 12 > MBEDTLS_SSL_IN_CONTENT_LEN ) |
| 6277 | { |
| 6278 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 6279 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 6280 | } |
| 6281 | |
| 6282 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Next handshake message has been buffered - load" ) ); |
| 6283 | MBEDTLS_SSL_DEBUG_BUF( 3, "Buffered handshake message (incl. header)", |
| 6284 | hs_buf->data, msg_len + 12 ); |
| 6285 | |
| 6286 | ssl->in_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; |
| 6287 | ssl->in_hslen = msg_len + 12; |
| 6288 | ssl->in_msglen = msg_len + 12; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 6289 | mbedtls_platform_memcpy( ssl->in_msg, hs_buf->data, ssl->in_hslen ); |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6290 | |
| 6291 | ret = 0; |
| 6292 | goto exit; |
| 6293 | } |
| 6294 | else |
| 6295 | { |
| 6296 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Next handshake message %u not or only partially bufffered", |
| 6297 | hs->in_msg_seq ) ); |
| 6298 | } |
| 6299 | |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6300 | ret = -1; |
| 6301 | |
| 6302 | exit: |
| 6303 | |
| 6304 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_load_buffered_message" ) ); |
| 6305 | return( ret ); |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6306 | } |
| 6307 | |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6308 | static int ssl_buffer_make_space( mbedtls_ssl_context *ssl, |
| 6309 | size_t desired ) |
| 6310 | { |
| 6311 | int offset; |
| 6312 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
Hanno Becker | 6e12c1e | 2018-08-24 14:39:15 +0100 | [diff] [blame] | 6313 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Attempt to free buffered messages to have %u bytes available", |
| 6314 | (unsigned) desired ) ); |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6315 | |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6316 | /* Get rid of future records epoch first, if such exist. */ |
| 6317 | ssl_free_buffered_record( ssl ); |
| 6318 | |
| 6319 | /* Check if we have enough space available now. */ |
| 6320 | if( desired <= ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - |
| 6321 | hs->buffering.total_bytes_buffered ) ) |
| 6322 | { |
Hanno Becker | 6e12c1e | 2018-08-24 14:39:15 +0100 | [diff] [blame] | 6323 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Enough space available after freeing future epoch record" ) ); |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6324 | return( 0 ); |
| 6325 | } |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6326 | |
Hanno Becker | 4f432ad | 2018-08-28 10:02:32 +0100 | [diff] [blame] | 6327 | /* We don't have enough space to buffer the next expected handshake |
| 6328 | * message. Remove buffers used for future messages to gain space, |
| 6329 | * starting with the most distant one. */ |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6330 | for( offset = MBEDTLS_SSL_MAX_BUFFERED_HS - 1; |
| 6331 | offset >= 0; offset-- ) |
| 6332 | { |
| 6333 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Free buffering slot %d to make space for reassembly of next handshake message", |
| 6334 | offset ) ); |
| 6335 | |
Hanno Becker | b309b92 | 2018-08-23 13:18:05 +0100 | [diff] [blame] | 6336 | ssl_buffering_free_slot( ssl, (uint8_t) offset ); |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6337 | |
| 6338 | /* Check if we have enough space available now. */ |
| 6339 | if( desired <= ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - |
| 6340 | hs->buffering.total_bytes_buffered ) ) |
| 6341 | { |
Hanno Becker | 6e12c1e | 2018-08-24 14:39:15 +0100 | [diff] [blame] | 6342 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Enough space available after freeing buffered HS messages" ) ); |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6343 | return( 0 ); |
| 6344 | } |
| 6345 | } |
| 6346 | |
| 6347 | return( -1 ); |
| 6348 | } |
| 6349 | |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6350 | static int ssl_buffer_message( mbedtls_ssl_context *ssl ) |
| 6351 | { |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6352 | int ret = 0; |
| 6353 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
| 6354 | |
| 6355 | if( hs == NULL ) |
| 6356 | return( 0 ); |
| 6357 | |
| 6358 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_buffer_message" ) ); |
| 6359 | |
| 6360 | switch( ssl->in_msgtype ) |
| 6361 | { |
| 6362 | case MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC: |
| 6363 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Remember CCS message" ) ); |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 6364 | |
Hanno Becker | d7f8ae2 | 2018-08-16 09:45:56 +0100 | [diff] [blame] | 6365 | hs->buffering.seen_ccs = 1; |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6366 | break; |
| 6367 | |
| 6368 | case MBEDTLS_SSL_MSG_HANDSHAKE: |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6369 | { |
| 6370 | unsigned recv_msg_seq_offset; |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 6371 | unsigned recv_msg_seq = (unsigned) |
| 6372 | mbedtls_platform_get_uint16_be( &ssl->in_msg[4] ); |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 6373 | |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6374 | mbedtls_ssl_hs_buffer *hs_buf; |
| 6375 | size_t msg_len = ssl->in_hslen - 12; |
| 6376 | |
| 6377 | /* We should never receive an old handshake |
| 6378 | * message - double-check nonetheless. */ |
| 6379 | if( recv_msg_seq < ssl->handshake->in_msg_seq ) |
| 6380 | { |
| 6381 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 6382 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 6383 | } |
| 6384 | |
| 6385 | recv_msg_seq_offset = recv_msg_seq - ssl->handshake->in_msg_seq; |
| 6386 | if( recv_msg_seq_offset >= MBEDTLS_SSL_MAX_BUFFERED_HS ) |
| 6387 | { |
| 6388 | /* Silently ignore -- message too far in the future */ |
| 6389 | MBEDTLS_SSL_DEBUG_MSG( 2, |
| 6390 | ( "Ignore future HS message with sequence number %u, " |
| 6391 | "buffering window %u - %u", |
| 6392 | recv_msg_seq, ssl->handshake->in_msg_seq, |
| 6393 | ssl->handshake->in_msg_seq + MBEDTLS_SSL_MAX_BUFFERED_HS - 1 ) ); |
| 6394 | |
| 6395 | goto exit; |
| 6396 | } |
| 6397 | |
| 6398 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering HS message with sequence number %u, offset %u ", |
| 6399 | recv_msg_seq, recv_msg_seq_offset ) ); |
| 6400 | |
| 6401 | hs_buf = &hs->buffering.hs[ recv_msg_seq_offset ]; |
| 6402 | |
| 6403 | /* Check if the buffering for this seq nr has already commenced. */ |
Hanno Becker | 4422bbb | 2018-08-20 09:40:19 +0100 | [diff] [blame] | 6404 | if( !hs_buf->is_valid ) |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6405 | { |
Hanno Becker | 2a97b0e | 2018-08-21 15:47:49 +0100 | [diff] [blame] | 6406 | size_t reassembly_buf_sz; |
| 6407 | |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6408 | hs_buf->is_fragmented = |
Andrzej Kurek | 8f52a8a | 2020-06-08 11:02:22 -0400 | [diff] [blame] | 6409 | ( ssl_hs_is_proper_fragment( ssl ) == PROPER_HS_FRAGMENT ); |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6410 | |
| 6411 | /* We copy the message back into the input buffer |
| 6412 | * after reassembly, so check that it's not too large. |
| 6413 | * This is an implementation-specific limitation |
| 6414 | * and not one from the standard, hence it is not |
| 6415 | * checked in ssl_check_hs_header(). */ |
Hanno Becker | 96a6c69 | 2018-08-21 15:56:03 +0100 | [diff] [blame] | 6416 | if( msg_len + 12 > MBEDTLS_SSL_IN_CONTENT_LEN ) |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6417 | { |
| 6418 | /* Ignore message */ |
| 6419 | goto exit; |
| 6420 | } |
| 6421 | |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6422 | /* Check if we have enough space to buffer the message. */ |
| 6423 | if( hs->buffering.total_bytes_buffered > |
| 6424 | MBEDTLS_SSL_DTLS_MAX_BUFFERING ) |
| 6425 | { |
| 6426 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 6427 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 6428 | } |
| 6429 | |
Hanno Becker | 2a97b0e | 2018-08-21 15:47:49 +0100 | [diff] [blame] | 6430 | reassembly_buf_sz = ssl_get_reassembly_buffer_size( msg_len, |
| 6431 | hs_buf->is_fragmented ); |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6432 | |
| 6433 | if( reassembly_buf_sz > ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - |
| 6434 | hs->buffering.total_bytes_buffered ) ) |
| 6435 | { |
| 6436 | if( recv_msg_seq_offset > 0 ) |
| 6437 | { |
| 6438 | /* If we can't buffer a future message because |
| 6439 | * of space limitations -- ignore. */ |
| 6440 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering of future message of size %u would exceed the compile-time limit %u (already %u bytes buffered) -- ignore\n", |
| 6441 | (unsigned) msg_len, MBEDTLS_SSL_DTLS_MAX_BUFFERING, |
| 6442 | (unsigned) hs->buffering.total_bytes_buffered ) ); |
| 6443 | goto exit; |
| 6444 | } |
Hanno Becker | e180139 | 2018-08-21 16:51:05 +0100 | [diff] [blame] | 6445 | else |
| 6446 | { |
| 6447 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering of future message of size %u would exceed the compile-time limit %u (already %u bytes buffered) -- attempt to make space by freeing buffered future messages\n", |
| 6448 | (unsigned) msg_len, MBEDTLS_SSL_DTLS_MAX_BUFFERING, |
| 6449 | (unsigned) hs->buffering.total_bytes_buffered ) ); |
| 6450 | } |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6451 | |
Hanno Becker | a02b0b4 | 2018-08-21 17:20:27 +0100 | [diff] [blame] | 6452 | if( ssl_buffer_make_space( ssl, reassembly_buf_sz ) != 0 ) |
Hanno Becker | 55e9e2a | 2018-08-21 16:07:55 +0100 | [diff] [blame] | 6453 | { |
Hanno Becker | 6e12c1e | 2018-08-24 14:39:15 +0100 | [diff] [blame] | 6454 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Reassembly of next message of size %u (%u with bitmap) would exceed the compile-time limit %u (already %u bytes buffered) -- fail\n", |
| 6455 | (unsigned) msg_len, |
| 6456 | (unsigned) reassembly_buf_sz, |
| 6457 | MBEDTLS_SSL_DTLS_MAX_BUFFERING, |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6458 | (unsigned) hs->buffering.total_bytes_buffered ) ); |
Hanno Becker | 55e9e2a | 2018-08-21 16:07:55 +0100 | [diff] [blame] | 6459 | ret = MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL; |
| 6460 | goto exit; |
| 6461 | } |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6462 | } |
| 6463 | |
| 6464 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialize reassembly, total length = %d", |
| 6465 | msg_len ) ); |
| 6466 | |
Hanno Becker | 2a97b0e | 2018-08-21 15:47:49 +0100 | [diff] [blame] | 6467 | hs_buf->data = mbedtls_calloc( 1, reassembly_buf_sz ); |
| 6468 | if( hs_buf->data == NULL ) |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6469 | { |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6470 | ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6471 | goto exit; |
| 6472 | } |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6473 | hs_buf->data_len = reassembly_buf_sz; |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6474 | |
| 6475 | /* Prepare final header: copy msg_type, length and message_seq, |
| 6476 | * then add standardised fragment_offset and fragment_length */ |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 6477 | if( mbedtls_platform_memcpy( hs_buf->data, ssl->in_msg, 6 ) != |
| 6478 | hs_buf->data ) |
| 6479 | { |
| 6480 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 6481 | goto exit; |
| 6482 | } |
| 6483 | if( mbedtls_platform_memset( hs_buf->data + 6, 0, 3 ) != |
| 6484 | hs_buf->data + 6 ) |
| 6485 | { |
| 6486 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 6487 | goto exit; |
| 6488 | } |
| 6489 | if( mbedtls_platform_memcpy( hs_buf->data + 9, hs_buf->data + 1, 3 ) != |
| 6490 | hs_buf->data + 9 ) |
| 6491 | { |
| 6492 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 6493 | goto exit; |
| 6494 | } |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6495 | |
| 6496 | hs_buf->is_valid = 1; |
Hanno Becker | e0b150f | 2018-08-21 15:51:03 +0100 | [diff] [blame] | 6497 | |
| 6498 | hs->buffering.total_bytes_buffered += reassembly_buf_sz; |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6499 | } |
| 6500 | else |
| 6501 | { |
| 6502 | /* Make sure msg_type and length are consistent */ |
Teppo Järvelin | 0efac53 | 2019-10-04 13:21:08 +0300 | [diff] [blame] | 6503 | if( memcmp( hs_buf->data, ssl->in_msg, 4 ) != 0 ) // use regular memcmp as msg type is public |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6504 | { |
| 6505 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "Fragment header mismatch - ignore" ) ); |
| 6506 | /* Ignore */ |
| 6507 | goto exit; |
| 6508 | } |
| 6509 | } |
| 6510 | |
Hanno Becker | 4422bbb | 2018-08-20 09:40:19 +0100 | [diff] [blame] | 6511 | if( !hs_buf->is_complete ) |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6512 | { |
| 6513 | size_t frag_len, frag_off; |
| 6514 | unsigned char * const msg = hs_buf->data + 12; |
| 6515 | |
| 6516 | /* |
| 6517 | * Check and copy current fragment |
| 6518 | */ |
| 6519 | |
| 6520 | /* Validation of header fields already done in |
| 6521 | * mbedtls_ssl_prepare_handshake_record(). */ |
| 6522 | frag_off = ssl_get_hs_frag_off( ssl ); |
| 6523 | frag_len = ssl_get_hs_frag_len( ssl ); |
| 6524 | |
| 6525 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "adding fragment, offset = %d, length = %d", |
| 6526 | frag_off, frag_len ) ); |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 6527 | mbedtls_platform_memcpy( msg + frag_off, ssl->in_msg + 12, frag_len ); |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6528 | |
| 6529 | if( hs_buf->is_fragmented ) |
| 6530 | { |
| 6531 | unsigned char * const bitmask = msg + msg_len; |
| 6532 | ssl_bitmask_set( bitmask, frag_off, frag_len ); |
| 6533 | hs_buf->is_complete = ( ssl_bitmask_check( bitmask, |
| 6534 | msg_len ) == 0 ); |
| 6535 | } |
| 6536 | else |
| 6537 | { |
| 6538 | hs_buf->is_complete = 1; |
| 6539 | } |
| 6540 | |
| 6541 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "message %scomplete", |
| 6542 | hs_buf->is_complete ? "" : "not yet " ) ); |
| 6543 | } |
| 6544 | |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6545 | break; |
Hanno Becker | 37f9532 | 2018-08-16 13:55:32 +0100 | [diff] [blame] | 6546 | } |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6547 | |
| 6548 | default: |
Hanno Becker | 360bef3 | 2018-08-28 10:04:33 +0100 | [diff] [blame] | 6549 | /* We don't buffer other types of messages. */ |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 6550 | break; |
| 6551 | } |
| 6552 | |
| 6553 | exit: |
| 6554 | |
| 6555 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_buffer_message" ) ); |
| 6556 | return( ret ); |
Hanno Becker | 40f5084 | 2018-08-15 14:48:01 +0100 | [diff] [blame] | 6557 | } |
| 6558 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 6559 | |
Hanno Becker | 1097b34 | 2018-08-15 14:09:41 +0100 | [diff] [blame] | 6560 | static int ssl_consume_current_message( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6561 | { |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6562 | /* |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6563 | * Consume last content-layer message and potentially |
| 6564 | * update in_msglen which keeps track of the contents' |
| 6565 | * consumption state. |
| 6566 | * |
| 6567 | * (1) Handshake messages: |
| 6568 | * Remove last handshake message, move content |
| 6569 | * and adapt in_msglen. |
| 6570 | * |
| 6571 | * (2) Alert messages: |
| 6572 | * Consume whole record content, in_msglen = 0. |
| 6573 | * |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6574 | * (3) Change cipher spec: |
| 6575 | * Consume whole record content, in_msglen = 0. |
| 6576 | * |
| 6577 | * (4) Application data: |
| 6578 | * Don't do anything - the record layer provides |
| 6579 | * the application data as a stream transport |
| 6580 | * and consumes through mbedtls_ssl_read only. |
| 6581 | * |
| 6582 | */ |
| 6583 | |
| 6584 | /* Case (1): Handshake messages */ |
| 6585 | if( ssl->in_hslen != 0 ) |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6586 | { |
Hanno Becker | bb9dd0c | 2017-06-08 11:55:34 +0100 | [diff] [blame] | 6587 | /* Hard assertion to be sure that no application data |
| 6588 | * is in flight, as corrupting ssl->in_msglen during |
| 6589 | * ssl->in_offt != NULL is fatal. */ |
| 6590 | if( ssl->in_offt != NULL ) |
| 6591 | { |
| 6592 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 6593 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 6594 | } |
| 6595 | |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6596 | /* |
| 6597 | * Get next Handshake message in the current record |
| 6598 | */ |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6599 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6600 | /* Notes: |
Hanno Becker | e72489d | 2017-10-23 13:23:50 +0100 | [diff] [blame] | 6601 | * (1) in_hslen is not necessarily the size of the |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6602 | * current handshake content: If DTLS handshake |
| 6603 | * fragmentation is used, that's the fragment |
| 6604 | * size instead. Using the total handshake message |
Hanno Becker | e72489d | 2017-10-23 13:23:50 +0100 | [diff] [blame] | 6605 | * size here is faulty and should be changed at |
| 6606 | * some point. |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6607 | * (2) While it doesn't seem to cause problems, one |
| 6608 | * has to be very careful not to assume that in_hslen |
| 6609 | * is always <= in_msglen in a sensible communication. |
| 6610 | * Again, it's wrong for DTLS handshake fragmentation. |
| 6611 | * The following check is therefore mandatory, and |
| 6612 | * should not be treated as a silently corrected assertion. |
Hanno Becker | bb9dd0c | 2017-06-08 11:55:34 +0100 | [diff] [blame] | 6613 | * Additionally, ssl->in_hslen might be arbitrarily out of |
| 6614 | * bounds after handling a DTLS message with an unexpected |
| 6615 | * sequence number, see mbedtls_ssl_prepare_handshake_record. |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6616 | */ |
| 6617 | if( ssl->in_hslen < ssl->in_msglen ) |
| 6618 | { |
| 6619 | ssl->in_msglen -= ssl->in_hslen; |
| 6620 | memmove( ssl->in_msg, ssl->in_msg + ssl->in_hslen, |
| 6621 | ssl->in_msglen ); |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6622 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6623 | MBEDTLS_SSL_DEBUG_BUF( 4, "remaining content in record", |
| 6624 | ssl->in_msg, ssl->in_msglen ); |
| 6625 | } |
| 6626 | else |
| 6627 | { |
| 6628 | ssl->in_msglen = 0; |
| 6629 | } |
Manuel Pégourié-Gonnard | 4a17536 | 2014-09-09 17:45:31 +0200 | [diff] [blame] | 6630 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6631 | ssl->in_hslen = 0; |
| 6632 | } |
| 6633 | /* Case (4): Application data */ |
| 6634 | else if( ssl->in_offt != NULL ) |
| 6635 | { |
| 6636 | return( 0 ); |
| 6637 | } |
| 6638 | /* Everything else (CCS & Alerts) */ |
| 6639 | else |
| 6640 | { |
| 6641 | ssl->in_msglen = 0; |
| 6642 | } |
| 6643 | |
Hanno Becker | 1097b34 | 2018-08-15 14:09:41 +0100 | [diff] [blame] | 6644 | return( 0 ); |
| 6645 | } |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6646 | |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6647 | static int ssl_record_is_in_progress( mbedtls_ssl_context *ssl ) |
| 6648 | { |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6649 | if( ssl->in_msglen > 0 ) |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6650 | return( 1 ); |
| 6651 | |
| 6652 | return( 0 ); |
| 6653 | } |
| 6654 | |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6655 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 6656 | |
| 6657 | static void ssl_free_buffered_record( mbedtls_ssl_context *ssl ) |
| 6658 | { |
| 6659 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
| 6660 | if( hs == NULL ) |
| 6661 | return; |
| 6662 | |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6663 | if( hs->buffering.future_record.data != NULL ) |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6664 | { |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6665 | hs->buffering.total_bytes_buffered -= |
| 6666 | hs->buffering.future_record.len; |
| 6667 | |
| 6668 | mbedtls_free( hs->buffering.future_record.data ); |
| 6669 | hs->buffering.future_record.data = NULL; |
| 6670 | } |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6671 | } |
| 6672 | |
| 6673 | static int ssl_load_buffered_record( mbedtls_ssl_context *ssl ) |
| 6674 | { |
| 6675 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
| 6676 | unsigned char * rec; |
| 6677 | size_t rec_len; |
| 6678 | unsigned rec_epoch; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 6679 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 6680 | size_t in_buf_len = ssl->in_buf_len; |
| 6681 | #else |
| 6682 | size_t in_buf_len = MBEDTLS_SSL_IN_BUFFER_LEN; |
| 6683 | #endif |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6684 | |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 6685 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) ) |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6686 | return( 0 ); |
| 6687 | |
| 6688 | if( hs == NULL ) |
| 6689 | return( 0 ); |
| 6690 | |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6691 | rec = hs->buffering.future_record.data; |
| 6692 | rec_len = hs->buffering.future_record.len; |
| 6693 | rec_epoch = hs->buffering.future_record.epoch; |
| 6694 | |
| 6695 | if( rec == NULL ) |
| 6696 | return( 0 ); |
| 6697 | |
Hanno Becker | 4cb782d | 2018-08-20 11:19:05 +0100 | [diff] [blame] | 6698 | /* Only consider loading future records if the |
| 6699 | * input buffer is empty. */ |
Hanno Becker | ef7afdf | 2018-08-28 17:16:31 +0100 | [diff] [blame] | 6700 | if( ssl_next_record_is_in_datagram( ssl ) == 1 ) |
Hanno Becker | 4cb782d | 2018-08-20 11:19:05 +0100 | [diff] [blame] | 6701 | return( 0 ); |
| 6702 | |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6703 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_load_buffered_record" ) ); |
| 6704 | |
| 6705 | if( rec_epoch != ssl->in_epoch ) |
| 6706 | { |
| 6707 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffered record not from current epoch." ) ); |
| 6708 | goto exit; |
| 6709 | } |
| 6710 | |
| 6711 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Found buffered record from current epoch - load" ) ); |
| 6712 | |
| 6713 | /* Double-check that the record is not too large */ |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 6714 | if( rec_len > in_buf_len - (size_t)( ssl->in_hdr - ssl->in_buf ) ) |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6715 | { |
| 6716 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 6717 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 6718 | } |
| 6719 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 6720 | mbedtls_platform_memcpy( ssl->in_hdr, rec, rec_len ); |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6721 | ssl->in_left = rec_len; |
| 6722 | ssl->next_record_offset = 0; |
| 6723 | |
| 6724 | ssl_free_buffered_record( ssl ); |
| 6725 | |
| 6726 | exit: |
| 6727 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_load_buffered_record" ) ); |
| 6728 | return( 0 ); |
| 6729 | } |
| 6730 | |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6731 | static int ssl_buffer_future_record( mbedtls_ssl_context *ssl, |
| 6732 | mbedtls_record const *rec ) |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6733 | { |
| 6734 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6735 | |
| 6736 | /* Don't buffer future records outside handshakes. */ |
| 6737 | if( hs == NULL ) |
| 6738 | return( 0 ); |
| 6739 | |
| 6740 | /* Only buffer handshake records (we are only interested |
| 6741 | * in Finished messages). */ |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6742 | if( rec->type != MBEDTLS_SSL_MSG_HANDSHAKE ) |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6743 | return( 0 ); |
| 6744 | |
| 6745 | /* Don't buffer more than one future epoch record. */ |
| 6746 | if( hs->buffering.future_record.data != NULL ) |
| 6747 | return( 0 ); |
| 6748 | |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6749 | /* Don't buffer record if there's not enough buffering space remaining. */ |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6750 | if( rec->buf_len > ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6751 | hs->buffering.total_bytes_buffered ) ) |
| 6752 | { |
| 6753 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering of future epoch record of size %u would exceed the compile-time limit %u (already %u bytes buffered) -- ignore\n", |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6754 | (unsigned) rec->buf_len, MBEDTLS_SSL_DTLS_MAX_BUFFERING, |
Hanno Becker | 01315ea | 2018-08-21 17:22:17 +0100 | [diff] [blame] | 6755 | (unsigned) hs->buffering.total_bytes_buffered ) ); |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6756 | return( 0 ); |
| 6757 | } |
| 6758 | |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6759 | /* Buffer record */ |
| 6760 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffer record from epoch %u", |
| 6761 | ssl->in_epoch + 1 ) ); |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6762 | MBEDTLS_SSL_DEBUG_BUF( 3, "Buffered record", rec->buf, rec->buf_len ); |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6763 | |
| 6764 | /* ssl_parse_record_header() only considers records |
| 6765 | * of the next epoch as candidates for buffering. */ |
| 6766 | hs->buffering.future_record.epoch = ssl->in_epoch + 1; |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6767 | hs->buffering.future_record.len = rec->buf_len; |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6768 | |
| 6769 | hs->buffering.future_record.data = |
| 6770 | mbedtls_calloc( 1, hs->buffering.future_record.len ); |
| 6771 | if( hs->buffering.future_record.data == NULL ) |
| 6772 | { |
| 6773 | /* If we run out of RAM trying to buffer a |
| 6774 | * record from the next epoch, just ignore. */ |
| 6775 | return( 0 ); |
| 6776 | } |
| 6777 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 6778 | mbedtls_platform_memcpy( hs->buffering.future_record.data, rec->buf, rec->buf_len ); |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6779 | |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6780 | hs->buffering.total_bytes_buffered += rec->buf_len; |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6781 | return( 0 ); |
| 6782 | } |
| 6783 | |
| 6784 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 6785 | |
Hanno Becker | e74d556 | 2018-08-15 14:26:08 +0100 | [diff] [blame] | 6786 | static int ssl_get_next_record( mbedtls_ssl_context *ssl ) |
Hanno Becker | 1097b34 | 2018-08-15 14:09:41 +0100 | [diff] [blame] | 6787 | { |
| 6788 | int ret; |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 6789 | mbedtls_record rec; |
Hanno Becker | 1097b34 | 2018-08-15 14:09:41 +0100 | [diff] [blame] | 6790 | |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6791 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 6792 | /* We might have buffered a future record; if so, |
| 6793 | * and if the epoch matches now, load it. |
| 6794 | * On success, this call will set ssl->in_left to |
| 6795 | * the length of the buffered record, so that |
| 6796 | * the calls to ssl_fetch_input() below will |
| 6797 | * essentially be no-ops. */ |
| 6798 | ret = ssl_load_buffered_record( ssl ); |
| 6799 | if( ret != 0 ) |
| 6800 | return( ret ); |
| 6801 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6802 | |
Hanno Becker | 8b09b73 | 2019-05-08 12:03:28 +0100 | [diff] [blame] | 6803 | /* Ensure that we have enough space available for the default form |
| 6804 | * of TLS / DTLS record headers (5 Bytes for TLS, 13 Bytes for DTLS, |
| 6805 | * with no space for CIDs counted in). */ |
| 6806 | ret = mbedtls_ssl_fetch_input( ssl, mbedtls_ssl_in_hdr_len( ssl ) ); |
| 6807 | if( ret != 0 ) |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6808 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6809 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret ); |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6810 | return( ret ); |
| 6811 | } |
| 6812 | |
Hanno Becker | c6e7c57 | 2019-07-11 12:29:35 +0100 | [diff] [blame] | 6813 | ret = ssl_parse_record_header( ssl, ssl->in_hdr, ssl->in_left, &rec ); |
| 6814 | if( ret != 0 ) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6815 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6816 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 6817 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6818 | { |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6819 | if( ret == MBEDTLS_ERR_SSL_EARLY_MESSAGE ) |
| 6820 | { |
Hanno Becker | af5bcfc | 2019-07-11 12:43:20 +0100 | [diff] [blame] | 6821 | ret = ssl_buffer_future_record( ssl, &rec ); |
Hanno Becker | 5f066e7 | 2018-08-16 14:56:31 +0100 | [diff] [blame] | 6822 | if( ret != 0 ) |
| 6823 | return( ret ); |
| 6824 | |
| 6825 | /* Fall through to handling of unexpected records */ |
| 6826 | ret = MBEDTLS_ERR_SSL_UNEXPECTED_RECORD; |
| 6827 | } |
| 6828 | |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 6829 | if( ret == MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ) |
| 6830 | { |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 6831 | #if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 6837972 | 2019-07-12 09:23:47 +0100 | [diff] [blame] | 6832 | /* Reset in pointers to default state for TLS/DTLS records, |
| 6833 | * assuming no CID and no offset between record content and |
| 6834 | * record plaintext. */ |
| 6835 | ssl_update_in_pointers( ssl ); |
| 6836 | |
Hanno Becker | 6941245 | 2019-07-12 08:33:49 +0100 | [diff] [blame] | 6837 | /* Setup internal message pointers from record structure. */ |
| 6838 | ssl->in_msgtype = rec.type; |
| 6839 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
| 6840 | ssl->in_len = ssl->in_cid + rec.cid_len; |
| 6841 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | c360dcc | 2019-07-12 10:00:45 +0100 | [diff] [blame] | 6842 | ssl->in_msg = ssl->in_len + 2; |
Hanno Becker | 6941245 | 2019-07-12 08:33:49 +0100 | [diff] [blame] | 6843 | ssl->in_msglen = rec.data_len; |
| 6844 | |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 6845 | ret = ssl_check_client_reconnect( ssl ); |
Manuel Pégourié-Gonnard | 731d7c0 | 2020-04-01 09:58:39 +0200 | [diff] [blame] | 6846 | MBEDTLS_SSL_DEBUG_RET( 2, "ssl_check_client_reconnect", ret ); |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 6847 | if( ret != 0 ) |
| 6848 | return( ret ); |
| 6849 | #endif |
| 6850 | |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 6851 | /* Skip unexpected record (but not whole datagram) */ |
Hanno Becker | 2528ee0 | 2019-07-11 12:48:53 +0100 | [diff] [blame] | 6852 | ssl->next_record_offset = rec.buf_len; |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6853 | |
Manuel Pégourié-Gonnard | e2e25e7 | 2015-12-03 16:13:17 +0100 | [diff] [blame] | 6854 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding unexpected record " |
| 6855 | "(header)" ) ); |
| 6856 | } |
| 6857 | else |
| 6858 | { |
| 6859 | /* Skip invalid record and the rest of the datagram */ |
| 6860 | ssl->next_record_offset = 0; |
| 6861 | ssl->in_left = 0; |
| 6862 | |
| 6863 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding invalid record " |
| 6864 | "(header)" ) ); |
| 6865 | } |
| 6866 | |
| 6867 | /* Get next record */ |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 6868 | return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ); |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6869 | } |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 6870 | else |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6871 | #endif |
Hanno Becker | 87b5626 | 2019-07-10 14:37:41 +0100 | [diff] [blame] | 6872 | { |
| 6873 | return( ret ); |
| 6874 | } |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6875 | } |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6876 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6877 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6878 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | e65ce78 | 2017-05-22 14:47:48 +0100 | [diff] [blame] | 6879 | { |
Hanno Becker | dc4d627 | 2019-07-10 15:01:45 +0100 | [diff] [blame] | 6880 | /* Remember offset of next record within datagram. */ |
Hanno Becker | 2720f4c | 2019-07-11 12:50:10 +0100 | [diff] [blame] | 6881 | ssl->next_record_offset = rec.buf_len; |
Hanno Becker | e65ce78 | 2017-05-22 14:47:48 +0100 | [diff] [blame] | 6882 | if( ssl->next_record_offset < ssl->in_left ) |
| 6883 | { |
| 6884 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "more than one record within datagram" ) ); |
| 6885 | } |
| 6886 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6887 | MBEDTLS_SSL_TRANSPORT_ELSE |
Hanno Becker | dc4d627 | 2019-07-10 15:01:45 +0100 | [diff] [blame] | 6888 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6889 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 6890 | { |
Hanno Becker | e045277 | 2019-07-10 17:12:07 +0100 | [diff] [blame] | 6891 | /* |
| 6892 | * Fetch record contents from underlying transport. |
| 6893 | */ |
Hanno Becker | 9babbf7 | 2019-07-11 12:50:29 +0100 | [diff] [blame] | 6894 | ret = mbedtls_ssl_fetch_input( ssl, rec.buf_len ); |
Hanno Becker | dc4d627 | 2019-07-10 15:01:45 +0100 | [diff] [blame] | 6895 | if( ret != 0 ) |
| 6896 | { |
| 6897 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret ); |
| 6898 | return( ret ); |
| 6899 | } |
| 6900 | |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6901 | ssl->in_left = 0; |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6902 | } |
Hanno Becker | dc4d627 | 2019-07-10 15:01:45 +0100 | [diff] [blame] | 6903 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
| 6904 | |
| 6905 | /* |
| 6906 | * Decrypt record contents. |
| 6907 | */ |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6908 | |
Hanno Becker | a89610a | 2019-07-11 13:07:45 +0100 | [diff] [blame] | 6909 | if( ( ret = ssl_prepare_record_content( ssl, &rec ) ) != 0 ) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6910 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6911 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6912 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6913 | { |
| 6914 | /* Silently discard invalid records */ |
Hanno Becker | 16e9ae2 | 2019-05-03 16:36:59 +0100 | [diff] [blame] | 6915 | if( ret == MBEDTLS_ERR_SSL_INVALID_MAC ) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6916 | { |
Manuel Pégourié-Gonnard | 0a88574 | 2015-08-04 12:08:35 +0200 | [diff] [blame] | 6917 | /* Except when waiting for Finished as a bad mac here |
| 6918 | * probably means something went wrong in the handshake |
| 6919 | * (eg wrong psk used, mitm downgrade attempt, etc.) */ |
| 6920 | if( ssl->state == MBEDTLS_SSL_CLIENT_FINISHED || |
| 6921 | ssl->state == MBEDTLS_SSL_SERVER_FINISHED ) |
| 6922 | { |
| 6923 | #if defined(MBEDTLS_SSL_ALL_ALERT_MESSAGES) |
| 6924 | if( ret == MBEDTLS_ERR_SSL_INVALID_MAC ) |
| 6925 | { |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 6926 | mbedtls_ssl_pend_fatal_alert( ssl, |
Manuel Pégourié-Gonnard | 0a88574 | 2015-08-04 12:08:35 +0200 | [diff] [blame] | 6927 | MBEDTLS_SSL_ALERT_MSG_BAD_RECORD_MAC ); |
| 6928 | } |
| 6929 | #endif |
| 6930 | return( ret ); |
| 6931 | } |
| 6932 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6933 | #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) |
Hanno Becker | de67154 | 2019-06-12 16:30:46 +0100 | [diff] [blame] | 6934 | if( mbedtls_ssl_conf_get_badmac_limit( ssl->conf ) != 0 && |
| 6935 | ++ssl->badmac_seen >= mbedtls_ssl_conf_get_badmac_limit( ssl->conf ) ) |
Manuel Pégourié-Gonnard | b0643d1 | 2014-10-14 18:30:36 +0200 | [diff] [blame] | 6936 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6937 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "too many records with bad MAC" ) ); |
| 6938 | return( MBEDTLS_ERR_SSL_INVALID_MAC ); |
Manuel Pégourié-Gonnard | b0643d1 | 2014-10-14 18:30:36 +0200 | [diff] [blame] | 6939 | } |
| 6940 | #endif |
| 6941 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 6942 | /* As above, invalid records cause |
| 6943 | * dismissal of the whole datagram. */ |
| 6944 | |
| 6945 | ssl->next_record_offset = 0; |
| 6946 | ssl->in_left = 0; |
| 6947 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6948 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding invalid record (mac)" ) ); |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 6949 | return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ); |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6950 | } |
| 6951 | |
| 6952 | return( ret ); |
| 6953 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6954 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 6955 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 6956 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6957 | { |
| 6958 | /* Error out (and send alert) on invalid records */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6959 | #if defined(MBEDTLS_SSL_ALL_ALERT_MESSAGES) |
| 6960 | if( ret == MBEDTLS_ERR_SSL_INVALID_MAC ) |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6961 | { |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 6962 | mbedtls_ssl_pend_fatal_alert( ssl, |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6963 | MBEDTLS_SSL_ALERT_MSG_BAD_RECORD_MAC ); |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6964 | } |
| 6965 | #endif |
| 6966 | return( ret ); |
| 6967 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 6968 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Manuel Pégourié-Gonnard | 63eca93 | 2014-09-08 16:39:08 +0200 | [diff] [blame] | 6969 | } |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 6970 | |
Hanno Becker | bd70c8e | 2019-07-12 09:40:44 +0100 | [diff] [blame] | 6971 | |
| 6972 | /* Reset in pointers to default state for TLS/DTLS records, |
| 6973 | * assuming no CID and no offset between record content and |
| 6974 | * record plaintext. */ |
| 6975 | ssl_update_in_pointers( ssl ); |
Hanno Becker | bd70c8e | 2019-07-12 09:40:44 +0100 | [diff] [blame] | 6976 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
| 6977 | ssl->in_len = ssl->in_cid + rec.cid_len; |
| 6978 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | c360dcc | 2019-07-12 10:00:45 +0100 | [diff] [blame] | 6979 | ssl->in_msg = ssl->in_len + 2; |
Hanno Becker | bd70c8e | 2019-07-12 09:40:44 +0100 | [diff] [blame] | 6980 | |
Hanno Becker | bf256cd | 2019-07-12 09:37:30 +0100 | [diff] [blame] | 6981 | /* The record content type may change during decryption, |
| 6982 | * so re-read it. */ |
| 6983 | ssl->in_msgtype = rec.type; |
| 6984 | /* Also update the input buffer, because unfortunately |
| 6985 | * the server-side ssl_parse_client_hello() reparses the |
| 6986 | * record header when receiving a ClientHello initiating |
| 6987 | * a renegotiation. */ |
| 6988 | ssl->in_hdr[0] = rec.type; |
| 6989 | ssl->in_msg = rec.buf + rec.data_offset; |
| 6990 | ssl->in_msglen = rec.data_len; |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 6991 | (void)mbedtls_platform_put_uint16_be( ssl->in_len, rec.data_len ); |
Hanno Becker | bf256cd | 2019-07-12 09:37:30 +0100 | [diff] [blame] | 6992 | |
Manuel Pégourié-Gonnard | ae48d86 | 2020-01-03 12:18:49 +0100 | [diff] [blame] | 6993 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 6994 | if( ssl->transform_in != NULL && |
| 6995 | ssl->session_in->compression == MBEDTLS_SSL_COMPRESS_DEFLATE ) |
| 6996 | { |
| 6997 | if( ( ret = ssl_decompress_buf( ssl ) ) != 0 ) |
| 6998 | { |
| 6999 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decompress_buf", ret ); |
| 7000 | return( ret ); |
| 7001 | } |
| 7002 | |
| 7003 | /* Check actual (decompress) record content length against |
| 7004 | * configured maximum. */ |
| 7005 | if( ssl->in_msglen > MBEDTLS_SSL_IN_CONTENT_LEN ) |
| 7006 | { |
| 7007 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) ); |
| 7008 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 7009 | } |
| 7010 | } |
| 7011 | #endif /* MBEDTLS_ZLIB_SUPPORT */ |
| 7012 | |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 7013 | return( 0 ); |
| 7014 | } |
| 7015 | |
| 7016 | int mbedtls_ssl_handle_message_type( mbedtls_ssl_context *ssl ) |
| 7017 | { |
| 7018 | int ret; |
| 7019 | |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 7020 | /* |
Manuel Pégourié-Gonnard | 167a376 | 2014-09-08 16:14:10 +0200 | [diff] [blame] | 7021 | * Handle particular types of records |
| 7022 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7023 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7024 | { |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 7025 | if( ( ret = mbedtls_ssl_prepare_handshake_record( ssl ) ) != 0 ) |
| 7026 | { |
Manuel Pégourié-Gonnard | a59543a | 2014-02-18 11:33:49 +0100 | [diff] [blame] | 7027 | return( ret ); |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 7028 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7029 | } |
| 7030 | |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 7031 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 7032 | { |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 7033 | if( ssl->in_msglen != 1 ) |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 7034 | { |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 7035 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid CCS message, len: %d", |
| 7036 | ssl->in_msglen ) ); |
| 7037 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 7038 | } |
| 7039 | |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 7040 | if( ssl->in_msg[0] != 1 ) |
| 7041 | { |
| 7042 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid CCS message, content: %02x", |
| 7043 | ssl->in_msg[0] ) ); |
| 7044 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 7045 | } |
| 7046 | |
| 7047 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 7048 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 7049 | ssl->state != MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC && |
| 7050 | ssl->state != MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) |
| 7051 | { |
| 7052 | if( ssl->handshake == NULL ) |
| 7053 | { |
| 7054 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping ChangeCipherSpec outside handshake" ) ); |
| 7055 | return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ); |
| 7056 | } |
| 7057 | |
| 7058 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "received out-of-order ChangeCipherSpec - remember" ) ); |
| 7059 | return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); |
| 7060 | } |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 7061 | #endif |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 7062 | } |
Hanno Becker | 2ed6bcc | 2018-08-15 15:11:57 +0100 | [diff] [blame] | 7063 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7064 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7065 | { |
Angus Gratton | 1a7a17e | 2018-06-20 15:43:50 +1000 | [diff] [blame] | 7066 | if( ssl->in_msglen != 2 ) |
| 7067 | { |
| 7068 | /* Note: Standard allows for more than one 2 byte alert |
| 7069 | to be packed in a single message, but Mbed TLS doesn't |
| 7070 | currently support this. */ |
| 7071 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid alert message, len: %d", |
| 7072 | ssl->in_msglen ) ); |
| 7073 | return( MBEDTLS_ERR_SSL_INVALID_RECORD ); |
| 7074 | } |
| 7075 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7076 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "got an alert message, type: [%d:%d]", |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7077 | ssl->in_msg[0], ssl->in_msg[1] ) ); |
| 7078 | |
| 7079 | /* |
Simon Butcher | 459a950 | 2015-10-27 16:09:03 +0000 | [diff] [blame] | 7080 | * Ignore non-fatal alerts, except close_notify and no_renegotiation |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7081 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7082 | if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_FATAL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7083 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7084 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "is a fatal alert message (msg %d)", |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 7085 | ssl->in_msg[1] ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7086 | return( MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7087 | } |
| 7088 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7089 | if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING && |
| 7090 | ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_CLOSE_NOTIFY ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7091 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7092 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a close notify message" ) ); |
| 7093 | return( MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7094 | } |
Manuel Pégourié-Gonnard | fbdf06c | 2015-10-23 11:13:28 +0200 | [diff] [blame] | 7095 | |
| 7096 | #if defined(MBEDTLS_SSL_RENEGOTIATION_ENABLED) |
| 7097 | if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING && |
| 7098 | ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_RENEGOTIATION ) |
| 7099 | { |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 7100 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a SSLv3 no renegotiation alert" ) ); |
Manuel Pégourié-Gonnard | fbdf06c | 2015-10-23 11:13:28 +0200 | [diff] [blame] | 7101 | /* Will be handled when trying to parse ServerHello */ |
| 7102 | return( 0 ); |
| 7103 | } |
| 7104 | #endif |
| 7105 | |
| 7106 | #if defined(MBEDTLS_SSL_PROTO_SSL3) && defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 7107 | if( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 && |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7108 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 7109 | MBEDTLS_SSL_IS_SERVER && |
Manuel Pégourié-Gonnard | fbdf06c | 2015-10-23 11:13:28 +0200 | [diff] [blame] | 7110 | ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING && |
| 7111 | ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_CERT ) |
| 7112 | { |
| 7113 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a SSLv3 no_cert" ) ); |
| 7114 | /* Will be handled in mbedtls_ssl_parse_certificate() */ |
| 7115 | return( 0 ); |
| 7116 | } |
| 7117 | #endif /* MBEDTLS_SSL_PROTO_SSL3 && MBEDTLS_SSL_SRV_C */ |
| 7118 | |
| 7119 | /* Silently ignore: fetch new message */ |
Simon Butcher | 9900014 | 2016-10-13 17:21:01 +0100 | [diff] [blame] | 7120 | return MBEDTLS_ERR_SSL_NON_FATAL; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7121 | } |
| 7122 | |
Hanno Becker | c76c619 | 2017-06-06 10:03:17 +0100 | [diff] [blame] | 7123 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 7124 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | c76c619 | 2017-06-06 10:03:17 +0100 | [diff] [blame] | 7125 | { |
Hanno Becker | 74dd3a7 | 2019-05-03 16:54:26 +0100 | [diff] [blame] | 7126 | /* Drop unexpected ApplicationData records, |
| 7127 | * except at the beginning of renegotiations */ |
| 7128 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA && |
| 7129 | ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER |
| 7130 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| 7131 | && ! ( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS && |
| 7132 | ssl->state == MBEDTLS_SSL_SERVER_HELLO ) |
Hanno Becker | c76c619 | 2017-06-06 10:03:17 +0100 | [diff] [blame] | 7133 | #endif |
Hanno Becker | 74dd3a7 | 2019-05-03 16:54:26 +0100 | [diff] [blame] | 7134 | ) |
| 7135 | { |
| 7136 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ApplicationData" ) ); |
| 7137 | return( MBEDTLS_ERR_SSL_NON_FATAL ); |
| 7138 | } |
| 7139 | |
| 7140 | if( ssl->handshake != NULL && |
| 7141 | ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER ) |
| 7142 | { |
| 7143 | ssl_handshake_wrapup_free_hs_transform( ssl ); |
| 7144 | } |
| 7145 | } |
Hanno Becker | f65ad82 | 2019-05-08 16:26:21 +0100 | [diff] [blame] | 7146 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Hanno Becker | c76c619 | 2017-06-06 10:03:17 +0100 | [diff] [blame] | 7147 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7148 | return( 0 ); |
| 7149 | } |
| 7150 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7151 | int mbedtls_ssl_send_fatal_handshake_failure( mbedtls_ssl_context *ssl ) |
Paul Bakker | d0f6fa7 | 2012-09-17 09:18:12 +0000 | [diff] [blame] | 7152 | { |
| 7153 | int ret; |
| 7154 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7155 | if( ( ret = mbedtls_ssl_send_alert_message( ssl, |
| 7156 | MBEDTLS_SSL_ALERT_LEVEL_FATAL, |
| 7157 | MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE ) ) != 0 ) |
Paul Bakker | d0f6fa7 | 2012-09-17 09:18:12 +0000 | [diff] [blame] | 7158 | { |
| 7159 | return( ret ); |
| 7160 | } |
| 7161 | |
| 7162 | return( 0 ); |
| 7163 | } |
| 7164 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7165 | int mbedtls_ssl_send_alert_message( mbedtls_ssl_context *ssl, |
Hanno Becker | 1facd55 | 2019-07-03 13:57:23 +0100 | [diff] [blame] | 7166 | unsigned char level, |
| 7167 | unsigned char message ) |
Paul Bakker | 0a92518 | 2012-04-16 06:46:41 +0000 | [diff] [blame] | 7168 | { |
| 7169 | int ret; |
| 7170 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 7171 | if( ssl == NULL || ssl->conf == NULL ) |
| 7172 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 7173 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7174 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> send alert message" ) ); |
Gilles Peskine | 1cc8e34 | 2017-05-03 16:28:34 +0200 | [diff] [blame] | 7175 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "send alert level=%u message=%u", level, message )); |
Paul Bakker | 0a92518 | 2012-04-16 06:46:41 +0000 | [diff] [blame] | 7176 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7177 | ssl->out_msgtype = MBEDTLS_SSL_MSG_ALERT; |
Paul Bakker | 0a92518 | 2012-04-16 06:46:41 +0000 | [diff] [blame] | 7178 | ssl->out_msglen = 2; |
| 7179 | ssl->out_msg[0] = level; |
| 7180 | ssl->out_msg[1] = message; |
| 7181 | |
Hanno Becker | 67bc7c3 | 2018-08-06 11:33:50 +0100 | [diff] [blame] | 7182 | if( ( ret = mbedtls_ssl_write_record( ssl, SSL_FORCE_FLUSH ) ) != 0 ) |
Paul Bakker | 0a92518 | 2012-04-16 06:46:41 +0000 | [diff] [blame] | 7183 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7184 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); |
Paul Bakker | 0a92518 | 2012-04-16 06:46:41 +0000 | [diff] [blame] | 7185 | return( ret ); |
| 7186 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7187 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= send alert message" ) ); |
Paul Bakker | 0a92518 | 2012-04-16 06:46:41 +0000 | [diff] [blame] | 7188 | |
| 7189 | return( 0 ); |
| 7190 | } |
| 7191 | |
Hanno Becker | 1757247 | 2019-02-08 07:19:04 +0000 | [diff] [blame] | 7192 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 7193 | static void ssl_clear_peer_cert( mbedtls_ssl_session *session ) |
| 7194 | { |
| 7195 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
| 7196 | if( session->peer_cert != NULL ) |
| 7197 | { |
| 7198 | mbedtls_x509_crt_free( session->peer_cert ); |
| 7199 | mbedtls_free( session->peer_cert ); |
| 7200 | session->peer_cert = NULL; |
| 7201 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 7202 | #elif defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 1757247 | 2019-02-08 07:19:04 +0000 | [diff] [blame] | 7203 | if( session->peer_cert_digest != NULL ) |
| 7204 | { |
| 7205 | /* Zeroization is not necessary. */ |
| 7206 | mbedtls_free( session->peer_cert_digest ); |
| 7207 | session->peer_cert_digest = NULL; |
| 7208 | session->peer_cert_digest_type = MBEDTLS_MD_NONE; |
| 7209 | session->peer_cert_digest_len = 0; |
| 7210 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 7211 | #else |
| 7212 | ((void) session); |
| 7213 | #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && MBEDTLS_SSL_RENEGOTIATION */ |
Hanno Becker | 1757247 | 2019-02-08 07:19:04 +0000 | [diff] [blame] | 7214 | } |
| 7215 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
| 7216 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7217 | /* |
| 7218 | * Handshake functions |
| 7219 | */ |
Hanno Becker | b71e90a | 2019-02-05 13:20:55 +0000 | [diff] [blame] | 7220 | #if !defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Gilles Peskine | f982852 | 2017-05-03 12:28:43 +0200 | [diff] [blame] | 7221 | /* No certificate support -> dummy functions */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7222 | int mbedtls_ssl_write_certificate( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7223 | { |
Hanno Becker | df64596 | 2019-06-26 13:02:22 +0100 | [diff] [blame] | 7224 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info = |
| 7225 | mbedtls_ssl_handshake_get_ciphersuite( ssl->handshake ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7226 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7227 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7228 | |
Hanno Becker | 5097cba | 2019-02-05 13:36:46 +0000 | [diff] [blame] | 7229 | if( !mbedtls_ssl_ciphersuite_uses_srv_cert( ciphersuite_info ) ) |
Paul Bakker | d4a56ec | 2013-04-16 18:05:29 +0200 | [diff] [blame] | 7230 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7231 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) ); |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 7232 | if( ssl->state == MBEDTLS_SSL_CLIENT_CERTIFICATE ) |
| 7233 | { |
| 7234 | ssl->state = MBEDTLS_SSL_CLIENT_KEY_EXCHANGE; |
| 7235 | } |
| 7236 | else if( ssl->state == MBEDTLS_SSL_SERVER_CERTIFICATE ) |
| 7237 | { |
| 7238 | ssl->state = MBEDTLS_SSL_SERVER_KEY_EXCHANGE; |
| 7239 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 7240 | else |
| 7241 | { |
| 7242 | ssl->state = MBEDTLS_SSL_INVALID; |
| 7243 | } |
Paul Bakker | d4a56ec | 2013-04-16 18:05:29 +0200 | [diff] [blame] | 7244 | return( 0 ); |
| 7245 | } |
| 7246 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7247 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 7248 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7249 | } |
| 7250 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7251 | int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7252 | { |
Hanno Becker | df64596 | 2019-06-26 13:02:22 +0100 | [diff] [blame] | 7253 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info = |
| 7254 | mbedtls_ssl_handshake_get_ciphersuite( ssl->handshake ); |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7255 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7256 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate" ) ); |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7257 | |
Hanno Becker | 5097cba | 2019-02-05 13:36:46 +0000 | [diff] [blame] | 7258 | if( !mbedtls_ssl_ciphersuite_uses_srv_cert( ciphersuite_info ) ) |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7259 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7260 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 7261 | if( ssl->state == MBEDTLS_SSL_CLIENT_CERTIFICATE ) |
| 7262 | { |
| 7263 | ssl->state = MBEDTLS_SSL_CLIENT_KEY_EXCHANGE; |
| 7264 | } |
| 7265 | else if( ssl->state == MBEDTLS_SSL_SERVER_CERTIFICATE ) |
| 7266 | { |
| 7267 | ssl->state = MBEDTLS_SSL_SERVER_KEY_EXCHANGE; |
| 7268 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 7269 | else |
| 7270 | { |
| 7271 | ssl->state = MBEDTLS_SSL_INVALID; |
| 7272 | } |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7273 | return( 0 ); |
| 7274 | } |
| 7275 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7276 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 7277 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7278 | } |
Gilles Peskine | f982852 | 2017-05-03 12:28:43 +0200 | [diff] [blame] | 7279 | |
Hanno Becker | b71e90a | 2019-02-05 13:20:55 +0000 | [diff] [blame] | 7280 | #else /* MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED */ |
Gilles Peskine | f982852 | 2017-05-03 12:28:43 +0200 | [diff] [blame] | 7281 | /* Some certificate support -> implement write and parse */ |
| 7282 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7283 | int mbedtls_ssl_write_certificate( mbedtls_ssl_context *ssl ) |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7284 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7285 | int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE; |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7286 | size_t i, n; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7287 | const mbedtls_x509_crt *crt; |
Hanno Becker | df64596 | 2019-06-26 13:02:22 +0100 | [diff] [blame] | 7288 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info = |
| 7289 | mbedtls_ssl_handshake_get_ciphersuite( ssl->handshake ); |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7290 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7291 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate" ) ); |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7292 | |
Hanno Becker | 5097cba | 2019-02-05 13:36:46 +0000 | [diff] [blame] | 7293 | if( !mbedtls_ssl_ciphersuite_uses_srv_cert( ciphersuite_info ) ) |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7294 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7295 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) ); |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 7296 | if( ssl->state == MBEDTLS_SSL_CLIENT_CERTIFICATE ) |
| 7297 | { |
| 7298 | ssl->state = MBEDTLS_SSL_CLIENT_KEY_EXCHANGE; |
| 7299 | } |
| 7300 | else if( ssl->state == MBEDTLS_SSL_SERVER_CERTIFICATE ) |
| 7301 | { |
| 7302 | ssl->state = MBEDTLS_SSL_SERVER_KEY_EXCHANGE; |
| 7303 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 7304 | else |
| 7305 | { |
| 7306 | ssl->state = MBEDTLS_SSL_INVALID; |
| 7307 | } |
Paul Bakker | 48f7a5d | 2013-04-19 14:30:58 +0200 | [diff] [blame] | 7308 | return( 0 ); |
| 7309 | } |
| 7310 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7311 | #if defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7312 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 7313 | MBEDTLS_SSL_IS_CLIENT ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7314 | { |
| 7315 | if( ssl->client_auth == 0 ) |
| 7316 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7317 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) ); |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 7318 | if( ssl->state == MBEDTLS_SSL_CLIENT_CERTIFICATE ) |
| 7319 | { |
| 7320 | ssl->state = MBEDTLS_SSL_CLIENT_KEY_EXCHANGE; |
| 7321 | } |
| 7322 | else if( ssl->state == MBEDTLS_SSL_SERVER_CERTIFICATE ) |
| 7323 | { |
| 7324 | ssl->state = MBEDTLS_SSL_SERVER_KEY_EXCHANGE; |
| 7325 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 7326 | else |
| 7327 | { |
| 7328 | ssl->state = MBEDTLS_SSL_INVALID; |
| 7329 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7330 | return( 0 ); |
| 7331 | } |
| 7332 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7333 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7334 | /* |
| 7335 | * If using SSLv3 and got no cert, send an Alert message |
| 7336 | * (otherwise an empty Certificate message will be sent). |
| 7337 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7338 | if( mbedtls_ssl_own_cert( ssl ) == NULL && |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 7339 | mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7340 | { |
| 7341 | ssl->out_msglen = 2; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7342 | ssl->out_msgtype = MBEDTLS_SSL_MSG_ALERT; |
| 7343 | ssl->out_msg[0] = MBEDTLS_SSL_ALERT_LEVEL_WARNING; |
| 7344 | ssl->out_msg[1] = MBEDTLS_SSL_ALERT_MSG_NO_CERT; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7345 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7346 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "got no certificate to send" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7347 | goto write_msg; |
| 7348 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7349 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7350 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7351 | #endif /* MBEDTLS_SSL_CLI_C */ |
| 7352 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7353 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_SERVER ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7354 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7355 | if( mbedtls_ssl_own_cert( ssl ) == NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7356 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7357 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no certificate to send" ) ); |
| 7358 | return( MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7359 | } |
| 7360 | } |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 7361 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7362 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7363 | MBEDTLS_SSL_DEBUG_CRT( 3, "own certificate", mbedtls_ssl_own_cert( ssl ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7364 | |
| 7365 | /* |
| 7366 | * 0 . 0 handshake type |
| 7367 | * 1 . 3 handshake length |
| 7368 | * 4 . 6 length of all certs |
| 7369 | * 7 . 9 length of cert. 1 |
| 7370 | * 10 . n-1 peer certificate |
| 7371 | * n . n+2 length of cert. 2 |
| 7372 | * n+3 . ... upper level cert, etc. |
| 7373 | */ |
| 7374 | i = 7; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7375 | crt = mbedtls_ssl_own_cert( ssl ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7376 | |
Paul Bakker | 2908713 | 2010-03-21 21:03:34 +0000 | [diff] [blame] | 7377 | while( crt != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7378 | { |
| 7379 | n = crt->raw.len; |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 7380 | if( n > MBEDTLS_SSL_OUT_CONTENT_LEN - 3 - i ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7381 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7382 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "certificate too large, %d > %d", |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 7383 | i + 3 + n, MBEDTLS_SSL_OUT_CONTENT_LEN ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7384 | return( MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7385 | } |
| 7386 | |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 7387 | (void)mbedtls_platform_put_uint24_be( &ssl->out_msg[i], n ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7388 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 7389 | i += 3; mbedtls_platform_memcpy( ssl->out_msg + i, crt->raw.p, n ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7390 | i += n; crt = crt->next; |
| 7391 | } |
| 7392 | |
Arto Kinnunen | 3d7439e | 2019-09-10 11:30:40 +0300 | [diff] [blame] | 7393 | (void)mbedtls_platform_put_uint24_be( &ssl->out_msg[4], ( i - 7 ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7394 | |
| 7395 | ssl->out_msglen = i; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7396 | ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; |
| 7397 | ssl->out_msg[0] = MBEDTLS_SSL_HS_CERTIFICATE; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7398 | |
Manuel Pégourié-Gonnard | cf141ca | 2015-05-20 10:35:51 +0200 | [diff] [blame] | 7399 | #if defined(MBEDTLS_SSL_PROTO_SSL3) && defined(MBEDTLS_SSL_CLI_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7400 | write_msg: |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 7401 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7402 | |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 7403 | if( ssl->state == MBEDTLS_SSL_CLIENT_CERTIFICATE ) |
| 7404 | { |
| 7405 | ssl->state = MBEDTLS_SSL_CLIENT_KEY_EXCHANGE; |
| 7406 | } |
| 7407 | else if( ssl->state == MBEDTLS_SSL_SERVER_CERTIFICATE ) |
| 7408 | { |
| 7409 | ssl->state = MBEDTLS_SSL_SERVER_KEY_EXCHANGE; |
| 7410 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 7411 | else |
| 7412 | { |
| 7413 | ssl->state = MBEDTLS_SSL_INVALID; |
| 7414 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7415 | |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 7416 | if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7417 | { |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 7418 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7419 | return( ret ); |
| 7420 | } |
| 7421 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7422 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write certificate" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7423 | |
Paul Bakker | ed27a04 | 2013-04-18 22:46:23 +0200 | [diff] [blame] | 7424 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7425 | } |
| 7426 | |
Hanno Becker | 285ff0c | 2019-01-31 07:44:03 +0000 | [diff] [blame] | 7427 | #if defined(MBEDTLS_SSL_RENEGOTIATION) && defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7428 | |
| 7429 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 7430 | #define PEER_CRT_CHANGED 0x75555555 |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7431 | static int ssl_check_peer_crt_unchanged( mbedtls_ssl_context *ssl, |
| 7432 | unsigned char *crt_buf, |
| 7433 | size_t crt_buf_len ) |
| 7434 | { |
| 7435 | mbedtls_x509_crt const * const peer_crt = ssl->session->peer_cert; |
| 7436 | |
| 7437 | if( peer_crt == NULL ) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 7438 | return( PEER_CRT_CHANGED ); |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7439 | |
| 7440 | if( peer_crt->raw.len != crt_buf_len ) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 7441 | return( PEER_CRT_CHANGED ); |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7442 | |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 7443 | return( mbedtls_platform_memequal( peer_crt->raw.p, crt_buf, crt_buf_len ) ); |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7444 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 7445 | #elif defined(MBEDTLS_SSL_RENEGOTIATION) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 7446 | #define PEER_CRT_CHANGED 0x75555555 |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7447 | static int ssl_check_peer_crt_unchanged( mbedtls_ssl_context *ssl, |
| 7448 | unsigned char *crt_buf, |
| 7449 | size_t crt_buf_len ) |
| 7450 | { |
| 7451 | int ret; |
| 7452 | unsigned char const * const peer_cert_digest = |
| 7453 | ssl->session->peer_cert_digest; |
| 7454 | mbedtls_md_type_t const peer_cert_digest_type = |
| 7455 | ssl->session->peer_cert_digest_type; |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 7456 | mbedtls_md_handle_t digest_info = |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7457 | mbedtls_md_info_from_type( peer_cert_digest_type ); |
| 7458 | unsigned char tmp_digest[MBEDTLS_SSL_PEER_CERT_DIGEST_MAX_LEN]; |
| 7459 | size_t digest_len; |
| 7460 | |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 7461 | if( peer_cert_digest == NULL || |
| 7462 | digest_info == MBEDTLS_MD_INVALID_HANDLE ) |
| 7463 | { |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 7464 | return( PEER_CRT_CHANGED ); |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 7465 | } |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7466 | |
| 7467 | digest_len = mbedtls_md_get_size( digest_info ); |
| 7468 | if( digest_len > MBEDTLS_SSL_PEER_CERT_DIGEST_MAX_LEN ) |
Andrzej Kurek | 45e7199 | 2020-07-08 10:09:44 -0400 | [diff] [blame] | 7469 | return( PEER_CRT_CHANGED ); |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7470 | |
| 7471 | ret = mbedtls_md( digest_info, crt_buf, crt_buf_len, tmp_digest ); |
| 7472 | if( ret != 0 ) |
Andrzej Kurek | 0919b14 | 2020-07-06 15:28:59 -0400 | [diff] [blame] | 7473 | return( PEER_CRT_CHANGED ); |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7474 | |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 7475 | return( mbedtls_platform_memequal( tmp_digest, peer_cert_digest, digest_len ) ); |
Hanno Becker | df75938 | 2019-02-05 17:02:46 +0000 | [diff] [blame] | 7476 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 7477 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && MBEDTLS_SSL_RENEGOTIATION */ |
Hanno Becker | 285ff0c | 2019-01-31 07:44:03 +0000 | [diff] [blame] | 7478 | #endif /* MBEDTLS_SSL_RENEGOTIATION && MBEDTLS_SSL_CLI_C */ |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7479 | |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 7480 | /* |
| 7481 | * Once the certificate message is read, parse it into a cert chain and |
| 7482 | * perform basic checks, but leave actual verification to the caller |
| 7483 | */ |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7484 | static int ssl_parse_certificate_chain( mbedtls_ssl_context *ssl, |
| 7485 | mbedtls_x509_crt *chain ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7486 | { |
Piotr Nowicki | 78fc139 | 2020-06-19 10:04:27 +0200 | [diff] [blame] | 7487 | volatile int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7488 | #if defined(MBEDTLS_SSL_RENEGOTIATION) && defined(MBEDTLS_SSL_CLI_C) |
| 7489 | int crt_cnt=0; |
| 7490 | #endif |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 7491 | size_t i, n; |
Gilles Peskine | 064a85c | 2017-05-10 10:46:40 +0200 | [diff] [blame] | 7492 | uint8_t alert; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7493 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7494 | if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7495 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7496 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7497 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7498 | MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7499 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7500 | } |
| 7501 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7502 | if( ssl->in_msg[0] != MBEDTLS_SSL_HS_CERTIFICATE || |
| 7503 | ssl->in_hslen < mbedtls_ssl_hs_hdr_len( ssl ) + 3 + 3 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7504 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7505 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7506 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7507 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7508 | return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7509 | } |
| 7510 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7511 | i = mbedtls_ssl_hs_hdr_len( ssl ); |
Manuel Pégourié-Gonnard | f49a7da | 2014-09-10 13:30:43 +0000 | [diff] [blame] | 7512 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7513 | /* |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7514 | * Same message structure as in mbedtls_ssl_write_certificate() |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7515 | */ |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 7516 | n = mbedtls_platform_get_uint16_be( &ssl->in_msg[i + 1] ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7517 | |
Manuel Pégourié-Gonnard | f49a7da | 2014-09-10 13:30:43 +0000 | [diff] [blame] | 7518 | if( ssl->in_msg[i] != 0 || |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7519 | ssl->in_hslen != n + 3 + mbedtls_ssl_hs_hdr_len( ssl ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7520 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7521 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7522 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7523 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7524 | return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7525 | } |
| 7526 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7527 | /* Make &ssl->in_msg[i] point to the beginning of the CRT chain. */ |
| 7528 | i += 3; |
| 7529 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7530 | /* Iterate through and parse the CRTs in the provided chain. */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7531 | while( i < ssl->in_hslen ) |
| 7532 | { |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7533 | /* Check that there's room for the next CRT's length fields. */ |
Philippe Antoine | 747fd53 | 2018-05-30 09:13:21 +0200 | [diff] [blame] | 7534 | if ( i + 3 > ssl->in_hslen ) { |
| 7535 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7536 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7537 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Philippe Antoine | 747fd53 | 2018-05-30 09:13:21 +0200 | [diff] [blame] | 7538 | return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ); |
| 7539 | } |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7540 | /* In theory, the CRT can be up to 2**24 Bytes, but we don't support |
| 7541 | * anything beyond 2**16 ~ 64K. */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7542 | if( ssl->in_msg[i] != 0 ) |
| 7543 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7544 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7545 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7546 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7547 | return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7548 | } |
| 7549 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7550 | /* Read length of the next CRT in the chain. */ |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 7551 | n = mbedtls_platform_get_uint16_be( &ssl->in_msg[i + 1] ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7552 | i += 3; |
| 7553 | |
| 7554 | if( n < 128 || i + n > ssl->in_hslen ) |
| 7555 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7556 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7557 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7558 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7559 | return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7560 | } |
| 7561 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7562 | /* Check if we're handling the first CRT in the chain. */ |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7563 | #if defined(MBEDTLS_SSL_RENEGOTIATION) && defined(MBEDTLS_SSL_CLI_C) |
| 7564 | if( crt_cnt++ == 0 && |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7565 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 7566 | MBEDTLS_SSL_IS_CLIENT && |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7567 | ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS ) |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7568 | { |
Hanno Becker | 68b856d | 2019-02-08 14:00:04 +0000 | [diff] [blame] | 7569 | /* During client-side renegotiation, check that the server's |
| 7570 | * end-CRTs hasn't changed compared to the initial handshake, |
| 7571 | * mitigating the triple handshake attack. On success, reuse |
| 7572 | * the original end-CRT instead of parsing it again. */ |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7573 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Check that peer CRT hasn't changed during renegotiation" ) ); |
| 7574 | if( ssl_check_peer_crt_unchanged( ssl, |
| 7575 | &ssl->in_msg[i], |
| 7576 | n ) != 0 ) |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7577 | { |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7578 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "new server cert during renegotiation" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7579 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7580 | MBEDTLS_SSL_ALERT_MSG_ACCESS_DENIED ); |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7581 | return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ); |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7582 | } |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7583 | |
| 7584 | /* Now we can safely free the original chain. */ |
| 7585 | ssl_clear_peer_cert( ssl->session ); |
| 7586 | } |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7587 | #endif /* MBEDTLS_SSL_RENEGOTIATION && MBEDTLS_SSL_CLI_C */ |
| 7588 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7589 | /* Parse the next certificate in the chain. */ |
Hanno Becker | 0cc7af5 | 2019-02-08 14:39:16 +0000 | [diff] [blame] | 7590 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7591 | ret = mbedtls_x509_crt_parse_der( chain, ssl->in_msg + i, n ); |
Hanno Becker | 0cc7af5 | 2019-02-08 14:39:16 +0000 | [diff] [blame] | 7592 | #else |
Hanno Becker | 42de8f8 | 2019-02-26 11:51:34 +0000 | [diff] [blame] | 7593 | /* If we don't need to store the CRT chain permanently, parse |
Hanno Becker | 0cc7af5 | 2019-02-08 14:39:16 +0000 | [diff] [blame] | 7594 | * it in-place from the input buffer instead of making a copy. */ |
| 7595 | ret = mbedtls_x509_crt_parse_der_nocopy( chain, ssl->in_msg + i, n ); |
| 7596 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
Gilles Peskine | 1cc8e34 | 2017-05-03 16:28:34 +0200 | [diff] [blame] | 7597 | switch( ret ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7598 | { |
Piotr Nowicki | 78fc139 | 2020-06-19 10:04:27 +0200 | [diff] [blame] | 7599 | case 0: /* ok */ |
| 7600 | mbedtls_platform_random_delay(); |
| 7601 | if( ret != 0 ) |
| 7602 | { |
| 7603 | alert = MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR; |
| 7604 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 7605 | goto crt_parse_der_failed; |
| 7606 | } |
| 7607 | break; |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7608 | case MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG + MBEDTLS_ERR_OID_NOT_FOUND: |
| 7609 | /* Ignore certificate with an unknown algorithm: maybe a |
Piotr Nowicki | 78fc139 | 2020-06-19 10:04:27 +0200 | [diff] [blame] | 7610 | * prior certificate was already trusted. */ |
| 7611 | mbedtls_platform_random_delay(); |
| 7612 | if( ret != MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG + MBEDTLS_ERR_OID_NOT_FOUND ) |
| 7613 | { |
| 7614 | alert = MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR; |
| 7615 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 7616 | goto crt_parse_der_failed; |
| 7617 | } |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7618 | break; |
Gilles Peskine | 1cc8e34 | 2017-05-03 16:28:34 +0200 | [diff] [blame] | 7619 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7620 | case MBEDTLS_ERR_X509_ALLOC_FAILED: |
| 7621 | alert = MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR; |
| 7622 | goto crt_parse_der_failed; |
Gilles Peskine | 1cc8e34 | 2017-05-03 16:28:34 +0200 | [diff] [blame] | 7623 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7624 | case MBEDTLS_ERR_X509_UNKNOWN_VERSION: |
| 7625 | alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT; |
| 7626 | goto crt_parse_der_failed; |
Gilles Peskine | 1cc8e34 | 2017-05-03 16:28:34 +0200 | [diff] [blame] | 7627 | |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7628 | default: |
| 7629 | alert = MBEDTLS_SSL_ALERT_MSG_BAD_CERT; |
| 7630 | crt_parse_der_failed: |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7631 | mbedtls_ssl_pend_fatal_alert( ssl, alert ); |
Hanno Becker | 33c3dc8 | 2019-01-30 14:46:46 +0000 | [diff] [blame] | 7632 | MBEDTLS_SSL_DEBUG_RET( 1, " mbedtls_x509_crt_parse_der", ret ); |
| 7633 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7634 | } |
| 7635 | |
| 7636 | i += n; |
| 7637 | } |
| 7638 | |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 7639 | MBEDTLS_SSL_DEBUG_CRT( 3, "peer certificate", chain ); |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 7640 | return( 0 ); |
| 7641 | } |
| 7642 | |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 7643 | #if defined(MBEDTLS_SSL_SRV_C) |
| 7644 | static int ssl_srv_check_client_no_crt_notification( mbedtls_ssl_context *ssl ) |
| 7645 | { |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7646 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_CLIENT ) |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 7647 | return( -1 ); |
| 7648 | |
| 7649 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
| 7650 | /* |
| 7651 | * Check if the client sent an empty certificate |
| 7652 | */ |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 7653 | if( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 ) |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 7654 | { |
| 7655 | if( ssl->in_msglen == 2 && |
| 7656 | ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT && |
| 7657 | ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING && |
| 7658 | ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_CERT ) |
| 7659 | { |
| 7660 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "SSLv3 client has no certificate" ) ); |
| 7661 | return( 0 ); |
| 7662 | } |
| 7663 | |
| 7664 | return( -1 ); |
| 7665 | } |
| 7666 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 7667 | |
| 7668 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 7669 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 7670 | if( ssl->in_hslen == 3 + mbedtls_ssl_hs_hdr_len( ssl ) && |
| 7671 | ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && |
| 7672 | ssl->in_msg[0] == MBEDTLS_SSL_HS_CERTIFICATE && |
Teppo Järvelin | 0efac53 | 2019-10-04 13:21:08 +0300 | [diff] [blame] | 7673 | memcmp( ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ), "\0\0\0", 3 ) == 0 ) // use regular memcmp as comparing public data |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 7674 | { |
| 7675 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "TLSv1 client has no certificate" ) ); |
| 7676 | return( 0 ); |
| 7677 | } |
| 7678 | |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 7679 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || \ |
| 7680 | MBEDTLS_SSL_PROTO_TLS1_2 */ |
Hanno Becker | 17daaa5 | 2019-06-18 12:31:45 +0100 | [diff] [blame] | 7681 | |
| 7682 | return( -1 ); |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 7683 | } |
| 7684 | #endif /* MBEDTLS_SSL_SRV_C */ |
| 7685 | |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7686 | /* Check if a certificate message is expected. |
| 7687 | * Return either |
| 7688 | * - SSL_CERTIFICATE_EXPECTED, or |
| 7689 | * - SSL_CERTIFICATE_SKIP |
| 7690 | * indicating whether a Certificate message is expected or not. |
| 7691 | */ |
| 7692 | #define SSL_CERTIFICATE_EXPECTED 0 |
Jarno Lamsa | af60cd7 | 2019-12-19 16:45:23 +0200 | [diff] [blame] | 7693 | #define SSL_CERTIFICATE_SKIP 0xff |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7694 | static int ssl_parse_certificate_coordinate( mbedtls_ssl_context *ssl, |
| 7695 | int authmode ) |
| 7696 | { |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 7697 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info = |
Hanno Becker | df64596 | 2019-06-26 13:02:22 +0100 | [diff] [blame] | 7698 | mbedtls_ssl_handshake_get_ciphersuite( ssl->handshake ); |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7699 | |
| 7700 | if( !mbedtls_ssl_ciphersuite_uses_srv_cert( ciphersuite_info ) ) |
| 7701 | return( SSL_CERTIFICATE_SKIP ); |
| 7702 | |
| 7703 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7704 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_SERVER ) |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7705 | { |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 7706 | if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info ) == |
| 7707 | MBEDTLS_KEY_EXCHANGE_RSA_PSK ) |
| 7708 | { |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7709 | return( SSL_CERTIFICATE_SKIP ); |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 7710 | } |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7711 | |
| 7712 | if( authmode == MBEDTLS_SSL_VERIFY_NONE ) |
| 7713 | { |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7714 | ssl->session_negotiate->verify_result = |
| 7715 | MBEDTLS_X509_BADCERT_SKIP_VERIFY; |
| 7716 | return( SSL_CERTIFICATE_SKIP ); |
| 7717 | } |
| 7718 | } |
Hanno Becker | fd5dc8a | 2019-03-01 08:10:46 +0000 | [diff] [blame] | 7719 | #else |
| 7720 | ((void) authmode); |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 7721 | #endif /* MBEDTLS_SSL_SRV_C */ |
| 7722 | |
| 7723 | return( SSL_CERTIFICATE_EXPECTED ); |
| 7724 | } |
| 7725 | |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7726 | static int ssl_parse_certificate_verify( mbedtls_ssl_context *ssl, |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7727 | volatile int authmode, |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7728 | mbedtls_x509_crt *chain, |
| 7729 | void *rs_ctx ) |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 7730 | { |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7731 | volatile int verify_ret = MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE; |
Andrzej Kurek | fd56f40 | 2020-05-25 11:52:05 -0400 | [diff] [blame] | 7732 | volatile int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7733 | volatile int flow_counter = 0; |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 7734 | mbedtls_ssl_ciphersuite_handle_t ciphersuite_info = |
Hanno Becker | df64596 | 2019-06-26 13:02:22 +0100 | [diff] [blame] | 7735 | mbedtls_ssl_handshake_get_ciphersuite( ssl->handshake ); |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7736 | mbedtls_x509_crt *ca_chain; |
| 7737 | mbedtls_x509_crl *ca_crl; |
| 7738 | |
| 7739 | if( authmode == MBEDTLS_SSL_VERIFY_NONE ) |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 7740 | { |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7741 | return( 0 ); |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 7742 | } |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7743 | |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 7744 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate verify" ) ); |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7745 | #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
| 7746 | if( ssl->handshake->sni_ca_chain != NULL ) |
| 7747 | { |
| 7748 | ca_chain = ssl->handshake->sni_ca_chain; |
| 7749 | ca_crl = ssl->handshake->sni_ca_crl; |
| 7750 | } |
| 7751 | else |
| 7752 | #endif |
| 7753 | { |
| 7754 | ca_chain = ssl->conf->ca_chain; |
| 7755 | ca_crl = ssl->conf->ca_crl; |
| 7756 | } |
| 7757 | |
| 7758 | /* |
| 7759 | * Main check: verify certificate |
| 7760 | */ |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7761 | verify_ret = mbedtls_x509_crt_verify_restartable( |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7762 | chain, |
| 7763 | ca_chain, ca_crl, |
| 7764 | ssl->conf->cert_profile, |
Teppo Järvelin | 4009d8f | 2019-08-19 14:48:09 +0300 | [diff] [blame] | 7765 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && !defined(MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7766 | ssl->hostname, |
Teppo Järvelin | 4009d8f | 2019-08-19 14:48:09 +0300 | [diff] [blame] | 7767 | #endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION */ |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7768 | &ssl->session_negotiate->verify_result, |
Hanno Becker | 9ec3fe0 | 2019-07-01 17:36:12 +0100 | [diff] [blame] | 7769 | #if !defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK) |
| 7770 | ssl->conf->f_vrfy, ssl->conf->p_vrfy, |
| 7771 | #endif /* MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */ |
| 7772 | rs_ctx ); |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7773 | |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7774 | if( verify_ret == 0 ) |
| 7775 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 7776 | mbedtls_platform_random_delay(); |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7777 | if( verify_ret == 0 ) |
| 7778 | { |
| 7779 | flow_counter++; |
| 7780 | } |
| 7781 | else |
| 7782 | { |
| 7783 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 7784 | } |
| 7785 | } |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7786 | if( verify_ret != 0 ) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7787 | { |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7788 | MBEDTLS_SSL_DEBUG_RET( 1, "x509_verify_cert", verify_ret ); |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7789 | flow_counter++; |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7790 | } |
| 7791 | |
| 7792 | #if defined(MBEDTLS_SSL__ECP_RESTARTABLE) |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7793 | if( verify_ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7794 | return( MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS ); |
| 7795 | #endif |
| 7796 | |
| 7797 | /* |
| 7798 | * Secondary checks: always done, but change 'ret' only if it was 0 |
| 7799 | */ |
| 7800 | |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7801 | #if defined(MBEDTLS_ECP_C) || defined(MBEDTLS_USE_TINYCRYPT) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7802 | { |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7803 | #if defined(MBEDTLS_USE_TINYCRYPT) |
Hanno Becker | ee902df | 2019-08-23 13:47:47 +0100 | [diff] [blame] | 7804 | ret = mbedtls_ssl_check_curve_uecc( ssl, MBEDTLS_UECC_DP_SECP256R1 ); |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7805 | #else /* MBEDTLS_USE_TINYCRYPT */ |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7806 | mbedtls_pk_context *pk; |
| 7807 | ret = mbedtls_x509_crt_pk_acquire( chain, &pk ); |
| 7808 | if( ret != 0 ) |
Hanno Becker | 2224ccf | 2019-06-28 10:52:45 +0100 | [diff] [blame] | 7809 | { |
| 7810 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_x509_crt_pk_acquire", ret ); |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7811 | return( ret ); |
Hanno Becker | 2224ccf | 2019-06-28 10:52:45 +0100 | [diff] [blame] | 7812 | } |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7813 | |
| 7814 | /* If certificate uses an EC key, make sure the curve is OK */ |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7815 | if( mbedtls_pk_can_do( pk, MBEDTLS_PK_ECKEY ) ) |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7816 | { |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7817 | ret = mbedtls_ssl_check_curve( ssl, mbedtls_pk_ec( *pk )->grp.id ); |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7818 | } |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7819 | |
Hanno Becker | c6d1c3e | 2019-03-05 13:50:56 +0000 | [diff] [blame] | 7820 | mbedtls_x509_crt_pk_release( chain ); |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7821 | #endif /* MBEDTLS_USE_TINYCRYPT */ |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7822 | |
| 7823 | if( ret != 0 ) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7824 | { |
| 7825 | ssl->session_negotiate->verify_result |= MBEDTLS_X509_BADCERT_BAD_KEY; |
| 7826 | |
| 7827 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate (EC key curve)" ) ); |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7828 | if( verify_ret == 0 ) |
| 7829 | verify_ret = MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE; |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7830 | flow_counter++; |
| 7831 | } |
| 7832 | if( ret == 0 ) |
| 7833 | { |
| 7834 | flow_counter++; |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7835 | } |
| 7836 | } |
Hanno Becker | 7e9c2e0 | 2019-08-21 17:05:20 +0100 | [diff] [blame] | 7837 | #endif /* MBEDTLS_ECP_C || MEDTLS_USE_TINYCRYPT */ |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7838 | |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7839 | ret = mbedtls_ssl_check_cert_usage( chain, |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7840 | ciphersuite_info, |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 7841 | ( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 7842 | MBEDTLS_SSL_IS_CLIENT ), |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7843 | &ssl->session_negotiate->verify_result ); |
| 7844 | if( ret == 0 ) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7845 | { |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7846 | flow_counter++; |
| 7847 | } |
| 7848 | else |
| 7849 | { |
| 7850 | flow_counter++; |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7851 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate (usage extensions)" ) ); |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7852 | if( verify_ret == 0 ) |
| 7853 | verify_ret = MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE; |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7854 | } |
| 7855 | |
| 7856 | /* mbedtls_x509_crt_verify_with_profile is supposed to report a |
| 7857 | * verification failure through MBEDTLS_ERR_X509_CERT_VERIFY_FAILED, |
| 7858 | * with details encoded in the verification flags. All other kinds |
| 7859 | * of error codes, including those from the user provided f_vrfy |
| 7860 | * functions, are treated as fatal and lead to a failure of |
| 7861 | * ssl_parse_certificate even if verification was optional. */ |
| 7862 | if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL && |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7863 | ( verify_ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED || |
| 7864 | verify_ret == MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ) ) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7865 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 7866 | mbedtls_platform_random_delay(); |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7867 | if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL && |
| 7868 | ( verify_ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED || |
| 7869 | verify_ret == MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE ) ) |
| 7870 | { |
| 7871 | verify_ret = 0; |
| 7872 | flow_counter++; |
| 7873 | } |
| 7874 | else |
| 7875 | { |
| 7876 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 7877 | } |
| 7878 | } else { |
| 7879 | flow_counter++; |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7880 | } |
| 7881 | |
| 7882 | if( ca_chain == NULL && authmode == MBEDTLS_SSL_VERIFY_REQUIRED ) |
| 7883 | { |
| 7884 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no CA chain" ) ); |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7885 | verify_ret = MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED; |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7886 | flow_counter++; |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7887 | } |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 7888 | else |
| 7889 | { |
| 7890 | flow_counter++; |
| 7891 | } |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7892 | |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7893 | if( verify_ret != 0 ) |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7894 | { |
| 7895 | uint8_t alert; |
| 7896 | |
| 7897 | /* The certificate may have been rejected for several reasons. |
| 7898 | Pick one and send the corresponding alert. Which alert to send |
| 7899 | may be a subject of debate in some cases. */ |
| 7900 | if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_OTHER ) |
| 7901 | alert = MBEDTLS_SSL_ALERT_MSG_ACCESS_DENIED; |
| 7902 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_CN_MISMATCH ) |
| 7903 | alert = MBEDTLS_SSL_ALERT_MSG_BAD_CERT; |
| 7904 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_KEY_USAGE ) |
| 7905 | alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT; |
| 7906 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_EXT_KEY_USAGE ) |
| 7907 | alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT; |
| 7908 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_NS_CERT_TYPE ) |
| 7909 | alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT; |
| 7910 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_BAD_PK ) |
| 7911 | alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT; |
| 7912 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_BAD_KEY ) |
| 7913 | alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT; |
| 7914 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_EXPIRED ) |
| 7915 | alert = MBEDTLS_SSL_ALERT_MSG_CERT_EXPIRED; |
| 7916 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_REVOKED ) |
| 7917 | alert = MBEDTLS_SSL_ALERT_MSG_CERT_REVOKED; |
| 7918 | else if( ssl->session_negotiate->verify_result & MBEDTLS_X509_BADCERT_NOT_TRUSTED ) |
| 7919 | alert = MBEDTLS_SSL_ALERT_MSG_UNKNOWN_CA; |
| 7920 | else |
| 7921 | alert = MBEDTLS_SSL_ALERT_MSG_CERT_UNKNOWN; |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7922 | mbedtls_ssl_pend_fatal_alert( ssl, alert ); |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7923 | } |
| 7924 | |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7925 | if( verify_ret == 0 && |
| 7926 | #if defined(MBEDTLS_ECP_C) || defined(MBEDTLS_USE_TINYCRYPT) |
| 7927 | flow_counter == 5 ) |
| 7928 | #else |
| 7929 | flow_counter == 4 ) |
| 7930 | #endif |
| 7931 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 7932 | mbedtls_platform_random_delay(); |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7933 | if( verify_ret == 0 && |
| 7934 | #if defined(MBEDTLS_ECP_C) || defined(MBEDTLS_USE_TINYCRYPT) |
| 7935 | flow_counter == 5 ) |
| 7936 | #else |
| 7937 | flow_counter == 4 ) |
| 7938 | #endif |
| 7939 | { |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 7940 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> PEER AUTHENTICATED" ) ); |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7941 | ssl->handshake->peer_authenticated = MBEDTLS_SSL_FI_FLAG_SET; |
| 7942 | } |
| 7943 | else |
| 7944 | { |
| 7945 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 7946 | } |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 7947 | } else { |
| 7948 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> PEER NOT AUTHENTICATED, %d", flow_counter)); |
Jarno Lamsa | ba4730f | 2019-12-19 08:42:03 +0200 | [diff] [blame] | 7949 | } |
| 7950 | |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7951 | #if defined(MBEDTLS_DEBUG_C) |
| 7952 | if( ssl->session_negotiate->verify_result != 0 ) |
| 7953 | { |
| 7954 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "! Certificate verification flags %x", |
| 7955 | ssl->session_negotiate->verify_result ) ); |
| 7956 | } |
| 7957 | else |
| 7958 | { |
| 7959 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "Certificate verification flags clear" ) ); |
| 7960 | } |
| 7961 | #endif /* MBEDTLS_DEBUG_C */ |
| 7962 | |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 7963 | return( verify_ret ); |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 7964 | } |
| 7965 | |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 7966 | #if !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 7967 | |
| 7968 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 7969 | static int ssl_remember_peer_crt_digest( mbedtls_ssl_context *ssl, |
| 7970 | unsigned char *start, size_t len ) |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 7971 | { |
| 7972 | int ret; |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 7973 | /* Remember digest of the peer's end-CRT. */ |
| 7974 | ssl->session_negotiate->peer_cert_digest = |
| 7975 | mbedtls_calloc( 1, MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_LEN ); |
| 7976 | if( ssl->session_negotiate->peer_cert_digest == NULL ) |
| 7977 | { |
| 7978 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", |
| 7979 | sizeof( MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_LEN ) ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 7980 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 7981 | MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR ); |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 7982 | |
| 7983 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
| 7984 | } |
| 7985 | |
| 7986 | ret = mbedtls_md( mbedtls_md_info_from_type( |
| 7987 | MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_TYPE ), |
| 7988 | start, len, |
| 7989 | ssl->session_negotiate->peer_cert_digest ); |
| 7990 | |
| 7991 | ssl->session_negotiate->peer_cert_digest_type = |
| 7992 | MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_TYPE; |
| 7993 | ssl->session_negotiate->peer_cert_digest_len = |
| 7994 | MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_LEN; |
| 7995 | |
| 7996 | return( ret ); |
| 7997 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 7998 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 7999 | |
| 8000 | static int ssl_remember_peer_pubkey( mbedtls_ssl_context *ssl, |
| 8001 | unsigned char *start, size_t len ) |
| 8002 | { |
| 8003 | unsigned char *end = start + len; |
| 8004 | int ret; |
| 8005 | |
| 8006 | /* Make a copy of the peer's raw public key. */ |
| 8007 | mbedtls_pk_init( &ssl->handshake->peer_pubkey ); |
| 8008 | ret = mbedtls_pk_parse_subpubkey( &start, end, |
| 8009 | &ssl->handshake->peer_pubkey ); |
| 8010 | if( ret != 0 ) |
| 8011 | { |
| 8012 | /* We should have parsed the public key before. */ |
| 8013 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
| 8014 | } |
| 8015 | |
Manuel Pégourié-Gonnard | 2829bbf | 2019-09-19 10:45:14 +0200 | [diff] [blame] | 8016 | ssl->handshake->got_peer_pubkey = 1; |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8017 | return( 0 ); |
| 8018 | } |
| 8019 | #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
| 8020 | |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 8021 | int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) |
| 8022 | { |
| 8023 | int ret = 0; |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 8024 | int crt_expected; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8025 | #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
| 8026 | const int authmode = ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET |
| 8027 | ? ssl->handshake->sni_authmode |
Hanno Becker | acd4fc0 | 2019-06-12 16:40:50 +0100 | [diff] [blame] | 8028 | : mbedtls_ssl_conf_get_authmode( ssl->conf ); |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8029 | #else |
Hanno Becker | acd4fc0 | 2019-06-12 16:40:50 +0100 | [diff] [blame] | 8030 | const int authmode = mbedtls_ssl_conf_get_authmode( ssl->conf ); |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8031 | #endif |
Manuel Pégourié-Gonnard | 3bf49c4 | 2017-08-15 13:47:06 +0200 | [diff] [blame] | 8032 | void *rs_ctx = NULL; |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8033 | mbedtls_x509_crt *chain = NULL; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8034 | |
| 8035 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate" ) ); |
| 8036 | |
Hanno Becker | 6b9a6f3 | 2019-02-07 10:11:07 +0000 | [diff] [blame] | 8037 | crt_expected = ssl_parse_certificate_coordinate( ssl, authmode ); |
| 8038 | if( crt_expected == SSL_CERTIFICATE_SKIP ) |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8039 | { |
| 8040 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); |
Hanno Becker | 613d490 | 2019-02-05 13:11:17 +0000 | [diff] [blame] | 8041 | goto exit; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8042 | } |
| 8043 | |
Manuel Pégourié-Gonnard | 3bf49c4 | 2017-08-15 13:47:06 +0200 | [diff] [blame] | 8044 | #if defined(MBEDTLS_SSL__ECP_RESTARTABLE) |
| 8045 | if( ssl->handshake->ecrs_enabled && |
Manuel Pégourié-Gonnard | 0b23f16 | 2017-08-24 12:08:33 +0200 | [diff] [blame] | 8046 | ssl->handshake->ecrs_state == ssl_ecrs_crt_verify ) |
Manuel Pégourié-Gonnard | 3bf49c4 | 2017-08-15 13:47:06 +0200 | [diff] [blame] | 8047 | { |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8048 | chain = ssl->handshake->ecrs_peer_cert; |
| 8049 | ssl->handshake->ecrs_peer_cert = NULL; |
Manuel Pégourié-Gonnard | 3bf49c4 | 2017-08-15 13:47:06 +0200 | [diff] [blame] | 8050 | goto crt_verify; |
| 8051 | } |
| 8052 | #endif |
| 8053 | |
Manuel Pégourié-Gonnard | 125af94 | 2018-09-11 11:08:12 +0200 | [diff] [blame] | 8054 | if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8055 | { |
| 8056 | /* mbedtls_ssl_read_record may have sent an alert already. We |
| 8057 | let it decide whether to alert. */ |
| 8058 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8059 | goto exit; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8060 | } |
| 8061 | |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8062 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 8063 | if( ssl_srv_check_client_no_crt_notification( ssl ) == 0 ) |
| 8064 | { |
| 8065 | ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_MISSING; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8066 | |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 8067 | if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL ) |
Hanno Becker | 613d490 | 2019-02-05 13:11:17 +0000 | [diff] [blame] | 8068 | ret = 0; |
| 8069 | else |
| 8070 | ret = MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE; |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 8071 | |
Hanno Becker | 613d490 | 2019-02-05 13:11:17 +0000 | [diff] [blame] | 8072 | goto exit; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8073 | } |
Hanno Becker | b8a0857 | 2019-02-05 12:49:06 +0000 | [diff] [blame] | 8074 | #endif /* MBEDTLS_SSL_SRV_C */ |
| 8075 | |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 8076 | /* Clear existing peer CRT structure in case we tried to |
| 8077 | * reuse a session but it failed, and allocate a new one. */ |
Hanno Becker | a46c287 | 2019-02-05 13:08:01 +0000 | [diff] [blame] | 8078 | ssl_clear_peer_cert( ssl->session_negotiate ); |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8079 | |
| 8080 | chain = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ); |
| 8081 | if( chain == NULL ) |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 8082 | { |
| 8083 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", |
| 8084 | sizeof( mbedtls_x509_crt ) ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 8085 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 8086 | MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR ); |
Hanno Becker | a46c287 | 2019-02-05 13:08:01 +0000 | [diff] [blame] | 8087 | |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8088 | ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; |
| 8089 | goto exit; |
| 8090 | } |
| 8091 | mbedtls_x509_crt_init( chain ); |
| 8092 | |
| 8093 | ret = ssl_parse_certificate_chain( ssl, chain ); |
Hanno Becker | 35e4177 | 2019-02-05 15:37:23 +0000 | [diff] [blame] | 8094 | if( ret != 0 ) |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8095 | goto exit; |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8096 | |
Manuel Pégourié-Gonnard | 3bf49c4 | 2017-08-15 13:47:06 +0200 | [diff] [blame] | 8097 | #if defined(MBEDTLS_SSL__ECP_RESTARTABLE) |
| 8098 | if( ssl->handshake->ecrs_enabled) |
Manuel Pégourié-Gonnard | 0b23f16 | 2017-08-24 12:08:33 +0200 | [diff] [blame] | 8099 | ssl->handshake->ecrs_state = ssl_ecrs_crt_verify; |
Manuel Pégourié-Gonnard | 3bf49c4 | 2017-08-15 13:47:06 +0200 | [diff] [blame] | 8100 | |
| 8101 | crt_verify: |
| 8102 | if( ssl->handshake->ecrs_enabled) |
| 8103 | rs_ctx = &ssl->handshake->ecrs_ctx; |
| 8104 | #endif |
| 8105 | |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 8106 | ret = ssl_parse_certificate_verify( ssl, authmode, |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8107 | chain, rs_ctx ); |
Hanno Becker | 3cf5061 | 2019-02-05 14:36:34 +0000 | [diff] [blame] | 8108 | if( ret != 0 ) |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8109 | goto exit; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8110 | |
Hanno Becker | 3008d28 | 2019-02-05 17:02:28 +0000 | [diff] [blame] | 8111 | #if !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8112 | { |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 8113 | size_t pk_len; |
| 8114 | unsigned char *pk_start; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8115 | |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8116 | /* We parse the CRT chain without copying, so |
| 8117 | * these pointers point into the input buffer, |
| 8118 | * and are hence still valid after freeing the |
| 8119 | * CRT chain. */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8120 | |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 8121 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| 8122 | unsigned char *crt_start; |
| 8123 | size_t crt_len; |
| 8124 | |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8125 | crt_start = chain->raw.p; |
| 8126 | crt_len = chain->raw.len; |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 8127 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8128 | |
Hanno Becker | 8c13ee6 | 2019-02-26 16:48:17 +0000 | [diff] [blame] | 8129 | pk_start = chain->cache->pk_raw.p; |
| 8130 | pk_len = chain->cache->pk_raw.len; |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8131 | |
| 8132 | /* Free the CRT structures before computing |
| 8133 | * digest and copying the peer's public key. */ |
| 8134 | mbedtls_x509_crt_free( chain ); |
| 8135 | mbedtls_free( chain ); |
| 8136 | chain = NULL; |
| 8137 | |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 8138 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8139 | ret = ssl_remember_peer_crt_digest( ssl, crt_start, crt_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8140 | if( ret != 0 ) |
Hanno Becker | cf291d6 | 2019-02-06 16:19:04 +0000 | [diff] [blame] | 8141 | goto exit; |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 8142 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8143 | |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8144 | ret = ssl_remember_peer_pubkey( ssl, pk_start, pk_len ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8145 | if( ret != 0 ) |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8146 | goto exit; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8147 | } |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8148 | #else /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
| 8149 | /* Pass ownership to session structure. */ |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8150 | ssl->session_negotiate->peer_cert = chain; |
| 8151 | chain = NULL; |
Hanno Becker | 34106f6 | 2019-02-08 14:59:05 +0000 | [diff] [blame] | 8152 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
Manuel Pégourié-Gonnard | fed37ed | 2017-08-15 13:27:41 +0200 | [diff] [blame] | 8153 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8154 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse certificate" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8155 | |
Hanno Becker | 613d490 | 2019-02-05 13:11:17 +0000 | [diff] [blame] | 8156 | exit: |
| 8157 | |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8158 | if( ret == 0 ) |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8159 | { |
| 8160 | if( ssl->state == MBEDTLS_SSL_CLIENT_CERTIFICATE ) |
| 8161 | { |
| 8162 | ssl->state = MBEDTLS_SSL_CLIENT_KEY_EXCHANGE; |
| 8163 | } |
| 8164 | else if( ssl->state == MBEDTLS_SSL_SERVER_CERTIFICATE ) |
| 8165 | { |
| 8166 | ssl->state = MBEDTLS_SSL_SERVER_KEY_EXCHANGE; |
| 8167 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 8168 | else |
| 8169 | { |
| 8170 | ssl->state = MBEDTLS_SSL_INVALID; |
| 8171 | } |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8172 | } |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 8173 | |
| 8174 | #if defined(MBEDTLS_SSL__ECP_RESTARTABLE) |
| 8175 | if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS ) |
| 8176 | { |
| 8177 | ssl->handshake->ecrs_peer_cert = chain; |
| 8178 | chain = NULL; |
| 8179 | } |
| 8180 | #endif |
| 8181 | |
| 8182 | if( chain != NULL ) |
| 8183 | { |
| 8184 | mbedtls_x509_crt_free( chain ); |
| 8185 | mbedtls_free( chain ); |
| 8186 | } |
| 8187 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8188 | return( ret ); |
| 8189 | } |
Hanno Becker | b71e90a | 2019-02-05 13:20:55 +0000 | [diff] [blame] | 8190 | #endif /* MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8191 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8192 | int mbedtls_ssl_write_change_cipher_spec( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8193 | { |
| 8194 | int ret; |
| 8195 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8196 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write change cipher spec" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8197 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8198 | ssl->out_msgtype = MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8199 | ssl->out_msglen = 1; |
| 8200 | ssl->out_msg[0] = 1; |
| 8201 | |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8202 | if( ssl->state == MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC ) |
| 8203 | { |
| 8204 | ssl->state = MBEDTLS_SSL_CLIENT_FINISHED; |
| 8205 | } |
| 8206 | else if( ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) |
| 8207 | { |
| 8208 | ssl->state = MBEDTLS_SSL_SERVER_FINISHED; |
| 8209 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 8210 | else |
| 8211 | { |
| 8212 | ssl->state = MBEDTLS_SSL_INVALID; |
| 8213 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8214 | |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 8215 | if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8216 | { |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 8217 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8218 | return( ret ); |
| 8219 | } |
| 8220 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8221 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write change cipher spec" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8222 | |
| 8223 | return( 0 ); |
| 8224 | } |
| 8225 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8226 | int mbedtls_ssl_parse_change_cipher_spec( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8227 | { |
| 8228 | int ret; |
| 8229 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8230 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse change cipher spec" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8231 | |
Hanno Becker | 327c93b | 2018-08-15 13:56:18 +0100 | [diff] [blame] | 8232 | if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8233 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8234 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8235 | return( ret ); |
| 8236 | } |
| 8237 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8238 | if( ssl->in_msgtype != MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8239 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8240 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad change cipher spec message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 8241 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 8242 | MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8243 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8244 | } |
| 8245 | |
Hanno Becker | e678eaa | 2018-08-21 14:57:46 +0100 | [diff] [blame] | 8246 | /* CCS records are only accepted if they have length 1 and content '1', |
| 8247 | * so we don't need to check this here. */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8248 | |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8249 | /* |
| 8250 | * Switch to our negotiated transform and session parameters for inbound |
| 8251 | * data. |
| 8252 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8253 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "switching to new transform spec for inbound data" ) ); |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8254 | ssl->transform_in = ssl->transform_negotiate; |
| 8255 | ssl->session_in = ssl->session_negotiate; |
| 8256 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8257 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8258 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8259 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8260 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8261 | ssl_dtls_replay_reset( ssl ); |
| 8262 | #endif |
| 8263 | |
| 8264 | /* Increment epoch */ |
| 8265 | if( ++ssl->in_epoch == 0 ) |
| 8266 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8267 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "DTLS epoch would wrap" ) ); |
Gilles Peskine | 1cc8e34 | 2017-05-03 16:28:34 +0200 | [diff] [blame] | 8268 | /* This is highly unlikely to happen for legitimate reasons, so |
| 8269 | treat it as an attack and don't send an alert. */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8270 | return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING ); |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8271 | } |
| 8272 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8273 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8274 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8275 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 8276 | { |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 8277 | mbedtls_platform_memset( ssl->in_ctr, 0, 8 ); |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8278 | } |
| 8279 | #endif |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8280 | |
Hanno Becker | f5970a0 | 2019-05-08 09:38:41 +0100 | [diff] [blame] | 8281 | ssl_update_in_pointers( ssl ); |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8282 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8283 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 8284 | if( mbedtls_ssl_hw_record_activate != NULL ) |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8285 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8286 | if( ( ret = mbedtls_ssl_hw_record_activate( ssl, MBEDTLS_SSL_CHANNEL_INBOUND ) ) != 0 ) |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8287 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8288 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_activate", ret ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 8289 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 8290 | MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8291 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 8292 | } |
| 8293 | } |
| 8294 | #endif |
| 8295 | |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8296 | if( ssl->state == MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC ) |
| 8297 | { |
| 8298 | ssl->state = MBEDTLS_SSL_CLIENT_FINISHED; |
| 8299 | } |
| 8300 | else if( ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) |
| 8301 | { |
| 8302 | ssl->state = MBEDTLS_SSL_SERVER_FINISHED; |
| 8303 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 8304 | else |
| 8305 | { |
| 8306 | ssl->state = MBEDTLS_SSL_INVALID; |
| 8307 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8308 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8309 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse change cipher spec" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8310 | |
| 8311 | return( 0 ); |
| 8312 | } |
| 8313 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8314 | void mbedtls_ssl_reset_checksum( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 67427c0 | 2014-07-11 13:45:34 +0200 | [diff] [blame] | 8315 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8316 | #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \ |
| 8317 | defined(MBEDTLS_SSL_PROTO_TLS1_1) |
Hanno Becker | 533f5b1 | 2019-08-15 16:56:35 +0100 | [diff] [blame] | 8318 | mbedtls_md5_starts_ret( &ssl->handshake->fin_md5 ); |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 8319 | mbedtls_sha1_starts_ret( &ssl->handshake->fin_sha1 ); |
Manuel Pégourié-Gonnard | 67427c0 | 2014-07-11 13:45:34 +0200 | [diff] [blame] | 8320 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8321 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 8322 | #if defined(MBEDTLS_SHA256_C) |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 8323 | mbedtls_sha256_starts_ret( &ssl->handshake->fin_sha256, 0 ); |
Manuel Pégourié-Gonnard | 67427c0 | 2014-07-11 13:45:34 +0200 | [diff] [blame] | 8324 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8325 | #if defined(MBEDTLS_SHA512_C) |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 8326 | mbedtls_sha512_starts_ret( &ssl->handshake->fin_sha512, 1 ); |
Manuel Pégourié-Gonnard | 67427c0 | 2014-07-11 13:45:34 +0200 | [diff] [blame] | 8327 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8328 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
Manuel Pégourié-Gonnard | 67427c0 | 2014-07-11 13:45:34 +0200 | [diff] [blame] | 8329 | } |
| 8330 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8331 | static void ssl_handshake_wrapup_free_hs_transform( mbedtls_ssl_context *ssl ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8332 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8333 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "=> handshake wrapup: final free" ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8334 | |
| 8335 | /* |
| 8336 | * Free our handshake params |
| 8337 | */ |
Gilles Peskine | 9b562d5 | 2018-04-25 20:32:43 +0200 | [diff] [blame] | 8338 | mbedtls_ssl_handshake_free( ssl ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8339 | mbedtls_free( ssl->handshake ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8340 | ssl->handshake = NULL; |
| 8341 | |
| 8342 | /* |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8343 | * Free the previous transform and swith in the current one |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8344 | */ |
| 8345 | if( ssl->transform ) |
| 8346 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8347 | mbedtls_ssl_transform_free( ssl->transform ); |
| 8348 | mbedtls_free( ssl->transform ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8349 | } |
| 8350 | ssl->transform = ssl->transform_negotiate; |
| 8351 | ssl->transform_negotiate = NULL; |
| 8352 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8353 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "<= handshake wrapup: final free" ) ); |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8354 | } |
| 8355 | |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8356 | int mbedtls_ssl_handshake_wrapup( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8357 | { |
Andrzej Kurek | fd56f40 | 2020-05-25 11:52:05 -0400 | [diff] [blame] | 8358 | volatile int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Jarno Lamsa | 489dccd | 2019-12-19 15:11:16 +0200 | [diff] [blame] | 8359 | |
| 8360 | #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
Jarno Lamsa | 015aa44 | 2019-12-20 12:09:37 +0200 | [diff] [blame] | 8361 | volatile const int authmode = ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET |
Jarno Lamsa | 489dccd | 2019-12-19 15:11:16 +0200 | [diff] [blame] | 8362 | ? ssl->handshake->sni_authmode |
| 8363 | : mbedtls_ssl_conf_get_authmode( ssl->conf ); |
| 8364 | #else |
Jarno Lamsa | 015aa44 | 2019-12-20 12:09:37 +0200 | [diff] [blame] | 8365 | volatile const int authmode = mbedtls_ssl_conf_get_authmode( ssl->conf ); |
Jarno Lamsa | 489dccd | 2019-12-19 15:11:16 +0200 | [diff] [blame] | 8366 | #endif |
Jarno Lamsa | af60cd7 | 2019-12-19 16:45:23 +0200 | [diff] [blame] | 8367 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
| 8368 | volatile int crt_expected = SSL_CERTIFICATE_EXPECTED; |
| 8369 | crt_expected = ssl_parse_certificate_coordinate( ssl, authmode ); |
| 8370 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8371 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "=> handshake wrapup" ) ); |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8372 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8373 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| 8374 | if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS ) |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8375 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8376 | ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_DONE; |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8377 | ssl->renego_records_seen = 0; |
| 8378 | } |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 8379 | #endif |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8380 | |
| 8381 | /* |
| 8382 | * Free the previous session and switch in the current one |
| 8383 | */ |
Paul Bakker | 0a59707 | 2012-09-25 21:55:46 +0000 | [diff] [blame] | 8384 | if( ssl->session ) |
| 8385 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8386 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Manuel Pégourié-Gonnard | 1a03473 | 2014-11-04 17:36:18 +0100 | [diff] [blame] | 8387 | /* RFC 7366 3.1: keep the EtM state */ |
| 8388 | ssl->session_negotiate->encrypt_then_mac = |
| 8389 | ssl->session->encrypt_then_mac; |
| 8390 | #endif |
| 8391 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8392 | mbedtls_ssl_session_free( ssl->session ); |
| 8393 | mbedtls_free( ssl->session ); |
Paul Bakker | 0a59707 | 2012-09-25 21:55:46 +0000 | [diff] [blame] | 8394 | } |
| 8395 | ssl->session = ssl->session_negotiate; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8396 | ssl->session_negotiate = NULL; |
| 8397 | |
Manuel Pégourié-Gonnard | 7b80c64 | 2019-07-02 16:21:30 +0200 | [diff] [blame] | 8398 | #if defined(MBEDTLS_SSL_SRV_C) && !defined(MBEDTLS_SSL_NO_SESSION_CACHE) |
Paul Bakker | 0a59707 | 2012-09-25 21:55:46 +0000 | [diff] [blame] | 8399 | /* |
| 8400 | * Add cache entry |
| 8401 | */ |
Manuel Pégourié-Gonnard | 7ca4e4d | 2015-05-04 10:55:58 +0200 | [diff] [blame] | 8402 | if( ssl->conf->f_set_cache != NULL && |
Manuel Pégourié-Gonnard | 12ad798 | 2015-06-18 15:50:37 +0200 | [diff] [blame] | 8403 | ssl->session->id_len != 0 && |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 8404 | ssl->handshake->resume == MBEDTLS_SSL_FI_FLAG_UNSET ) |
Manuel Pégourié-Gonnard | c086cce | 2013-08-02 14:13:02 +0200 | [diff] [blame] | 8405 | { |
Manuel Pégourié-Gonnard | 5cb3308 | 2015-05-06 18:06:26 +0100 | [diff] [blame] | 8406 | if( ssl->conf->f_set_cache( ssl->conf->p_cache, ssl->session ) != 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8407 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "cache did not store session" ) ); |
Manuel Pégourié-Gonnard | c086cce | 2013-08-02 14:13:02 +0200 | [diff] [blame] | 8408 | } |
Manuel Pégourié-Gonnard | 7b80c64 | 2019-07-02 16:21:30 +0200 | [diff] [blame] | 8409 | #endif /* MBEDTLS_SSL_SRV_C && !MBEDTLS_SSL_NO_SESSION_CACHE */ |
Paul Bakker | 0a59707 | 2012-09-25 21:55:46 +0000 | [diff] [blame] | 8410 | |
Jarno Lamsa | af60cd7 | 2019-12-19 16:45:23 +0200 | [diff] [blame] | 8411 | if( authmode == MBEDTLS_SSL_VERIFY_NONE || |
| 8412 | authmode == MBEDTLS_SSL_VERIFY_OPTIONAL || |
| 8413 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
| 8414 | crt_expected == SSL_CERTIFICATE_SKIP ) |
| 8415 | #else |
| 8416 | 1 ) |
| 8417 | #endif |
Jarno Lamsa | 489dccd | 2019-12-19 15:11:16 +0200 | [diff] [blame] | 8418 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 8419 | mbedtls_platform_random_delay(); |
Jarno Lamsa | af60cd7 | 2019-12-19 16:45:23 +0200 | [diff] [blame] | 8420 | if( authmode == MBEDTLS_SSL_VERIFY_NONE || |
| 8421 | authmode == MBEDTLS_SSL_VERIFY_OPTIONAL || |
| 8422 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
| 8423 | crt_expected == SSL_CERTIFICATE_SKIP ) |
| 8424 | #else |
| 8425 | 1 ) |
| 8426 | #endif |
Jarno Lamsa | 489dccd | 2019-12-19 15:11:16 +0200 | [diff] [blame] | 8427 | { |
| 8428 | ssl->handshake->peer_authenticated = MBEDTLS_SSL_FI_FLAG_SET; |
| 8429 | } |
| 8430 | else |
| 8431 | { |
| 8432 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 8433 | goto cleanup; |
| 8434 | } |
| 8435 | } |
| 8436 | |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8437 | #if !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION) |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 8438 | if( ssl->handshake->resume == MBEDTLS_SSL_FI_FLAG_SET ) |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8439 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 8440 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 8441 | if( ssl->handshake->resume == MBEDTLS_SSL_FI_FLAG_SET ) |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8442 | { |
Jarno Lamsa | 0616405 | 2019-12-19 14:40:36 +0200 | [diff] [blame] | 8443 | /* When doing session resume, no premaster or peer authentication */ |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8444 | ssl->handshake->peer_authenticated = MBEDTLS_SSL_FI_FLAG_SET; |
Jarno Lamsa | 0616405 | 2019-12-19 14:40:36 +0200 | [diff] [blame] | 8445 | ssl->handshake->premaster_generated = MBEDTLS_SSL_FI_FLAG_SET; |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8446 | } |
| 8447 | else |
| 8448 | { |
| 8449 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Jarno Lamsa | 489dccd | 2019-12-19 15:11:16 +0200 | [diff] [blame] | 8450 | goto cleanup; |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8451 | } |
| 8452 | } |
| 8453 | #endif |
| 8454 | |
| 8455 | if( ssl->handshake->peer_authenticated == MBEDTLS_SSL_FI_FLAG_SET ) |
| 8456 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 8457 | mbedtls_platform_random_delay(); |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8458 | if( ssl->handshake->peer_authenticated == MBEDTLS_SSL_FI_FLAG_SET ) |
| 8459 | { |
| 8460 | ret = 0; |
| 8461 | } |
| 8462 | else |
| 8463 | { |
| 8464 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
Jarno Lamsa | 0616405 | 2019-12-19 14:40:36 +0200 | [diff] [blame] | 8465 | goto cleanup; |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8466 | } |
| 8467 | } |
| 8468 | else |
| 8469 | { |
| 8470 | ret = MBEDTLS_ERR_SSL_PEER_VERIFY_FAILED; |
Jarno Lamsa | 0616405 | 2019-12-19 14:40:36 +0200 | [diff] [blame] | 8471 | goto cleanup; |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8472 | } |
| 8473 | |
Jarno Lamsa | 0616405 | 2019-12-19 14:40:36 +0200 | [diff] [blame] | 8474 | if( ssl->handshake->hello_random_set == MBEDTLS_SSL_FI_FLAG_SET && |
| 8475 | ssl->handshake->key_derivation_done == MBEDTLS_SSL_FI_FLAG_SET && |
| 8476 | ssl->handshake->premaster_generated == MBEDTLS_SSL_FI_FLAG_SET ) |
| 8477 | { |
Arto Kinnunen | ac6d226 | 2020-01-09 10:11:20 +0200 | [diff] [blame] | 8478 | mbedtls_platform_random_delay(); |
Jarno Lamsa | 0616405 | 2019-12-19 14:40:36 +0200 | [diff] [blame] | 8479 | if( ssl->handshake->hello_random_set == MBEDTLS_SSL_FI_FLAG_SET && |
| 8480 | ssl->handshake->key_derivation_done == MBEDTLS_SSL_FI_FLAG_SET && |
| 8481 | ssl->handshake->premaster_generated == MBEDTLS_SSL_FI_FLAG_SET ) |
| 8482 | { |
| 8483 | ret = 0; |
| 8484 | } |
| 8485 | else |
| 8486 | { |
| 8487 | ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 8488 | goto cleanup; |
| 8489 | } |
| 8490 | } |
| 8491 | else |
| 8492 | { |
| 8493 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "hello random %d", ssl->handshake->hello_random_set ) ); |
| 8494 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "key_derivation_done %d", ssl->handshake->key_derivation_done ) ); |
| 8495 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "premaster_generated %d", ssl->handshake->premaster_generated ) ); |
| 8496 | ret = MBEDTLS_ERR_SSL_INTERNAL_ERROR; |
| 8497 | } |
| 8498 | |
| 8499 | cleanup: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8500 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 8501 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8502 | ssl->handshake->flight != NULL ) |
| 8503 | { |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 8504 | /* Cancel handshake timer */ |
| 8505 | ssl_set_timer( ssl, 0 ); |
| 8506 | |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8507 | /* Keep last flight around in case we need to resend it: |
| 8508 | * we need the handshake and transform structures for that */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8509 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip freeing handshake and transform" ) ); |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 8510 | } |
| 8511 | else |
| 8512 | #endif |
| 8513 | ssl_handshake_wrapup_free_hs_transform( ssl ); |
| 8514 | |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8515 | ssl->state = MBEDTLS_SSL_HANDSHAKE_OVER; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8516 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8517 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "<= handshake wrapup" ) ); |
Jarno Lamsa | e1621d4 | 2019-12-19 08:58:56 +0200 | [diff] [blame] | 8518 | return ret; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8519 | } |
| 8520 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8521 | int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl ) |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 8522 | { |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8523 | int ret, hash_len; |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 8524 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8525 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write finished" ) ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 8526 | |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8527 | ssl_update_out_pointers( ssl, ssl->transform_negotiate ); |
Paul Bakker | 92be97b | 2013-01-02 17:30:03 +0100 | [diff] [blame] | 8528 | |
Hanno Becker | c2fb759 | 2019-08-15 16:31:23 +0100 | [diff] [blame] | 8529 | ssl_calc_finished( mbedtls_ssl_get_minor_ver( ssl ), |
| 8530 | mbedtls_ssl_suite_get_mac( |
| 8531 | mbedtls_ssl_ciphersuite_from_id( |
| 8532 | mbedtls_ssl_session_get_ciphersuite( |
| 8533 | ssl->session_negotiate ) ) ), |
| 8534 | ssl, ssl->out_msg + 4, |
| 8535 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 8536 | |
Manuel Pégourié-Gonnard | 214a848 | 2016-02-22 11:27:26 +0100 | [diff] [blame] | 8537 | /* |
| 8538 | * RFC 5246 7.4.9 (Page 63) says 12 is the default length and ciphersuites |
| 8539 | * may define some other value. Currently (early 2016), no defined |
| 8540 | * ciphersuite does this (and this is unlikely to change as activity has |
| 8541 | * moved to TLS 1.3 now) so we can keep the hardcoded 12 here. |
| 8542 | */ |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 8543 | hash_len = ( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 ) ? 36 : 12; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8544 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8545 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8546 | ssl->verify_data_len = hash_len; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 8547 | mbedtls_platform_memcpy( ssl->own_verify_data, ssl->out_msg + 4, hash_len ); |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 8548 | #endif |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8549 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8550 | ssl->out_msglen = 4 + hash_len; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8551 | ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; |
| 8552 | ssl->out_msg[0] = MBEDTLS_SSL_HS_FINISHED; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8553 | |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 8554 | #if !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8555 | /* |
| 8556 | * In case of session resuming, invert the client and server |
| 8557 | * ChangeCipherSpec messages order. |
| 8558 | */ |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 8559 | if( ssl->handshake->resume == MBEDTLS_SSL_FI_FLAG_SET ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8560 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8561 | #if defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8562 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 8563 | MBEDTLS_SSL_IS_CLIENT ) |
| 8564 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8565 | ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP; |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8566 | } |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 8567 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8568 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8569 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 8570 | MBEDTLS_SSL_IS_SERVER ) |
| 8571 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8572 | ssl->state = MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC; |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8573 | } |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 8574 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8575 | } |
| 8576 | else |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 8577 | #endif /* !MBEDTLS_SSL_NO_SESSION_RESUMPTION */ |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8578 | { |
| 8579 | if( ssl->state == MBEDTLS_SSL_CLIENT_FINISHED ) |
| 8580 | { |
| 8581 | ssl->state = MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC; |
| 8582 | } |
| 8583 | else if( ssl->state == MBEDTLS_SSL_SERVER_FINISHED ) |
| 8584 | { |
| 8585 | ssl->state = MBEDTLS_SSL_FLUSH_BUFFERS; |
| 8586 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 8587 | else |
| 8588 | { |
| 8589 | ssl->state = MBEDTLS_SSL_INVALID; |
| 8590 | } |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8591 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8592 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8593 | /* |
Paul Bakker | b9e4e2c | 2014-05-01 14:18:25 +0200 | [diff] [blame] | 8594 | * Switch to our negotiated transform and session parameters for outbound |
| 8595 | * data. |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8596 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8597 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "switching to new transform spec for outbound data" ) ); |
Manuel Pégourié-Gonnard | 5afb167 | 2014-02-16 18:33:22 +0100 | [diff] [blame] | 8598 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8599 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8600 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8601 | { |
| 8602 | unsigned char i; |
| 8603 | |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 8604 | /* Remember current epoch settings for resending */ |
| 8605 | ssl->handshake->alt_transform_out = ssl->transform_out; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 8606 | mbedtls_platform_memcpy( ssl->handshake->alt_out_ctr, ssl->cur_out_ctr, 8 ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 8607 | |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8608 | /* Set sequence_number to zero */ |
Hanno Becker | 1985947 | 2018-08-06 09:40:20 +0100 | [diff] [blame] | 8609 | memset( ssl->cur_out_ctr + 2, 0, 6 ); |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8610 | |
| 8611 | /* Increment epoch */ |
| 8612 | for( i = 2; i > 0; i-- ) |
Hanno Becker | 1985947 | 2018-08-06 09:40:20 +0100 | [diff] [blame] | 8613 | if( ++ssl->cur_out_ctr[i - 1] != 0 ) |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8614 | break; |
| 8615 | |
| 8616 | /* The loop goes to its end iff the counter is wrapping */ |
| 8617 | if( i == 0 ) |
| 8618 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8619 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "DTLS epoch would wrap" ) ); |
| 8620 | return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING ); |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8621 | } |
| 8622 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8623 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8624 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8625 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 8626 | { |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 8627 | mbedtls_platform_memset( ssl->cur_out_ctr, 0, 8 ); |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8628 | } |
| 8629 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8630 | |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 8631 | ssl->transform_out = ssl->transform_negotiate; |
| 8632 | ssl->session_out = ssl->session_negotiate; |
| 8633 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8634 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 8635 | if( mbedtls_ssl_hw_record_activate != NULL ) |
Paul Bakker | 07eb38b | 2012-12-19 14:42:06 +0100 | [diff] [blame] | 8636 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8637 | if( ( ret = mbedtls_ssl_hw_record_activate( ssl, MBEDTLS_SSL_CHANNEL_OUTBOUND ) ) != 0 ) |
Paul Bakker | 07eb38b | 2012-12-19 14:42:06 +0100 | [diff] [blame] | 8638 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8639 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_activate", ret ); |
| 8640 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Paul Bakker | 07eb38b | 2012-12-19 14:42:06 +0100 | [diff] [blame] | 8641 | } |
| 8642 | } |
| 8643 | #endif |
| 8644 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8645 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 8646 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8647 | mbedtls_ssl_send_flight_completed( ssl ); |
Manuel Pégourié-Gonnard | 7de3c9e | 2014-09-29 15:29:48 +0200 | [diff] [blame] | 8648 | #endif |
| 8649 | |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 8650 | if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8651 | { |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 8652 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8653 | return( ret ); |
| 8654 | } |
| 8655 | |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 8656 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 8657 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 8658 | ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) |
| 8659 | { |
| 8660 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret ); |
| 8661 | return( ret ); |
| 8662 | } |
| 8663 | #endif |
| 8664 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8665 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write finished" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8666 | |
| 8667 | return( 0 ); |
| 8668 | } |
| 8669 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8670 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Manuel Pégourié-Gonnard | ca6440b | 2014-09-10 12:39:54 +0000 | [diff] [blame] | 8671 | #define SSL_MAX_HASH_LEN 36 |
| 8672 | #else |
| 8673 | #define SSL_MAX_HASH_LEN 12 |
| 8674 | #endif |
| 8675 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8676 | int mbedtls_ssl_parse_finished( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8677 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 8678 | int ret; |
Manuel Pégourié-Gonnard | 879a4f9 | 2014-07-11 22:31:12 +0200 | [diff] [blame] | 8679 | unsigned int hash_len; |
Manuel Pégourié-Gonnard | ca6440b | 2014-09-10 12:39:54 +0000 | [diff] [blame] | 8680 | unsigned char buf[SSL_MAX_HASH_LEN]; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8681 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8682 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse finished" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8683 | |
Hanno Becker | c2fb759 | 2019-08-15 16:31:23 +0100 | [diff] [blame] | 8684 | ssl_calc_finished( mbedtls_ssl_get_minor_ver( ssl ), |
| 8685 | mbedtls_ssl_suite_get_mac( |
| 8686 | mbedtls_ssl_ciphersuite_from_id( |
| 8687 | mbedtls_ssl_session_get_ciphersuite( |
| 8688 | ssl->session_negotiate ) ) ), |
| 8689 | ssl, buf, |
| 8690 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) ^ 1 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8691 | |
Hanno Becker | 327c93b | 2018-08-15 13:56:18 +0100 | [diff] [blame] | 8692 | if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8693 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8694 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8695 | return( ret ); |
| 8696 | } |
| 8697 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8698 | if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8699 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8700 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad finished message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 8701 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 8702 | MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8703 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8704 | } |
| 8705 | |
Manuel Pégourié-Gonnard | ca6440b | 2014-09-10 12:39:54 +0000 | [diff] [blame] | 8706 | /* There is currently no ciphersuite using another length with TLS 1.2 */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8707 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 8708 | if( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 ) |
Manuel Pégourié-Gonnard | ca6440b | 2014-09-10 12:39:54 +0000 | [diff] [blame] | 8709 | hash_len = 36; |
| 8710 | else |
| 8711 | #endif |
| 8712 | hash_len = 12; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8713 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8714 | if( ssl->in_msg[0] != MBEDTLS_SSL_HS_FINISHED || |
| 8715 | ssl->in_hslen != mbedtls_ssl_hs_hdr_len( ssl ) + hash_len ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8716 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8717 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad finished message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 8718 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 8719 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8720 | return( MBEDTLS_ERR_SSL_BAD_HS_FINISHED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8721 | } |
| 8722 | |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 8723 | if( mbedtls_platform_memequal( ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ), |
| 8724 | buf, hash_len ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8725 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8726 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad finished message" ) ); |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 8727 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 8728 | MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8729 | return( MBEDTLS_ERR_SSL_BAD_HS_FINISHED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8730 | } |
| 8731 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8732 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8733 | ssl->verify_data_len = hash_len; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 8734 | mbedtls_platform_memcpy( ssl->peer_verify_data, buf, hash_len ); |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 8735 | #endif |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8736 | |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 8737 | #if !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION) |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 8738 | if( ssl->handshake->resume == MBEDTLS_SSL_FI_FLAG_SET ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8739 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8740 | #if defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8741 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_CLIENT ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8742 | ssl->state = MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC; |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 8743 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8744 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8745 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_SERVER ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8746 | ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP; |
Manuel Pégourié-Gonnard | d16d1cb | 2014-11-20 18:15:05 +0100 | [diff] [blame] | 8747 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8748 | } |
| 8749 | else |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 8750 | #endif /* !MBEDTLS_SSL_NO_SESSION_RESUMPTION */ |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8751 | { |
| 8752 | if( ssl->state == MBEDTLS_SSL_CLIENT_FINISHED ) |
| 8753 | { |
| 8754 | ssl->state = MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC; |
| 8755 | } |
| 8756 | else if( ssl->state == MBEDTLS_SSL_SERVER_FINISHED ) |
| 8757 | { |
| 8758 | ssl->state = MBEDTLS_SSL_FLUSH_BUFFERS; |
| 8759 | } |
Jarno Lamsa | b018009 | 2019-11-12 15:46:46 +0200 | [diff] [blame] | 8760 | else |
| 8761 | { |
| 8762 | ssl->state = MBEDTLS_SSL_INVALID; |
| 8763 | } |
Jarno Lamsa | 2b20516 | 2019-11-12 15:36:21 +0200 | [diff] [blame] | 8764 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8765 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8766 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 8767 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8768 | mbedtls_ssl_recv_flight_completed( ssl ); |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 8769 | #endif |
| 8770 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8771 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse finished" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 8772 | |
| 8773 | return( 0 ); |
| 8774 | } |
| 8775 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8776 | static void ssl_handshake_params_init( mbedtls_ssl_handshake_params *handshake ) |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8777 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8778 | memset( handshake, 0, sizeof( mbedtls_ssl_handshake_params ) ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8779 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8780 | #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \ |
| 8781 | defined(MBEDTLS_SSL_PROTO_TLS1_1) |
| 8782 | mbedtls_md5_init( &handshake->fin_md5 ); |
| 8783 | mbedtls_sha1_init( &handshake->fin_sha1 ); |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 8784 | mbedtls_md5_starts_ret( &handshake->fin_md5 ); |
| 8785 | mbedtls_sha1_starts_ret( &handshake->fin_sha1 ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8786 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8787 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 8788 | #if defined(MBEDTLS_SHA256_C) |
| 8789 | mbedtls_sha256_init( &handshake->fin_sha256 ); |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 8790 | mbedtls_sha256_starts_ret( &handshake->fin_sha256, 0 ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8791 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8792 | #if defined(MBEDTLS_SHA512_C) |
| 8793 | mbedtls_sha512_init( &handshake->fin_sha512 ); |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 8794 | mbedtls_sha512_starts_ret( &handshake->fin_sha512, 1 ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8795 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8796 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8797 | |
Hanno Becker | 7e5437a | 2017-04-28 17:15:26 +0100 | [diff] [blame] | 8798 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \ |
| 8799 | defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
| 8800 | mbedtls_ssl_sig_hash_set_init( &handshake->hash_algs ); |
| 8801 | #endif |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8802 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8803 | #if defined(MBEDTLS_DHM_C) |
| 8804 | mbedtls_dhm_init( &handshake->dhm_ctx ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8805 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8806 | #if defined(MBEDTLS_ECDH_C) |
| 8807 | mbedtls_ecdh_init( &handshake->ecdh_ctx ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8808 | #endif |
Manuel Pégourié-Gonnard | eef142d | 2015-09-16 10:05:04 +0200 | [diff] [blame] | 8809 | #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) |
Manuel Pégourié-Gonnard | 76cfd3f | 2015-09-15 12:10:54 +0200 | [diff] [blame] | 8810 | mbedtls_ecjpake_init( &handshake->ecjpake_ctx ); |
Manuel Pégourié-Gonnard | 77c0646 | 2015-09-17 13:59:49 +0200 | [diff] [blame] | 8811 | #if defined(MBEDTLS_SSL_CLI_C) |
| 8812 | handshake->ecjpake_cache = NULL; |
| 8813 | handshake->ecjpake_cache_len = 0; |
| 8814 | #endif |
Manuel Pégourié-Gonnard | 76cfd3f | 2015-09-15 12:10:54 +0200 | [diff] [blame] | 8815 | #endif |
Manuel Pégourié-Gonnard | cdc26ae | 2015-06-19 12:16:31 +0200 | [diff] [blame] | 8816 | |
Manuel Pégourié-Gonnard | 862cde5 | 2017-05-17 11:56:15 +0200 | [diff] [blame] | 8817 | #if defined(MBEDTLS_SSL__ECP_RESTARTABLE) |
Manuel Pégourié-Gonnard | 6b7301c | 2017-08-15 12:08:45 +0200 | [diff] [blame] | 8818 | mbedtls_x509_crt_restart_init( &handshake->ecrs_ctx ); |
Manuel Pégourié-Gonnard | 862cde5 | 2017-05-17 11:56:15 +0200 | [diff] [blame] | 8819 | #endif |
| 8820 | |
Manuel Pégourié-Gonnard | cdc26ae | 2015-06-19 12:16:31 +0200 | [diff] [blame] | 8821 | #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
| 8822 | handshake->sni_authmode = MBEDTLS_SSL_VERIFY_UNSET; |
| 8823 | #endif |
Hanno Becker | 3bf8cdf | 2019-02-06 16:18:31 +0000 | [diff] [blame] | 8824 | |
| 8825 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && \ |
| 8826 | !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
| 8827 | mbedtls_pk_init( &handshake->peer_pubkey ); |
| 8828 | #endif |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8829 | } |
| 8830 | |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 8831 | void mbedtls_ssl_transform_init( mbedtls_ssl_transform *transform ) |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8832 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8833 | memset( transform, 0, sizeof(mbedtls_ssl_transform) ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 8834 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 8835 | mbedtls_cipher_init( &transform->cipher_ctx ); |
| 8836 | #else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8837 | mbedtls_cipher_init( &transform->cipher_ctx_enc ); |
| 8838 | mbedtls_cipher_init( &transform->cipher_ctx_dec ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 8839 | #endif |
Paul Bakker | 84bbeb5 | 2014-07-01 14:53:22 +0200 | [diff] [blame] | 8840 | |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 8841 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8842 | mbedtls_md_init( &transform->md_ctx_enc ); |
| 8843 | mbedtls_md_init( &transform->md_ctx_dec ); |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 8844 | #endif |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8845 | } |
| 8846 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8847 | void mbedtls_ssl_session_init( mbedtls_ssl_session *session ) |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8848 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8849 | memset( session, 0, sizeof(mbedtls_ssl_session) ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8850 | } |
| 8851 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8852 | static int ssl_handshake_init( mbedtls_ssl_context *ssl ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8853 | { |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8854 | /* Clear old handshake information if present */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8855 | if( ssl->transform_negotiate ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8856 | mbedtls_ssl_transform_free( ssl->transform_negotiate ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8857 | if( ssl->session_negotiate ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8858 | mbedtls_ssl_session_free( ssl->session_negotiate ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8859 | if( ssl->handshake ) |
Gilles Peskine | 9b562d5 | 2018-04-25 20:32:43 +0200 | [diff] [blame] | 8860 | mbedtls_ssl_handshake_free( ssl ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8861 | |
| 8862 | /* |
| 8863 | * Either the pointers are now NULL or cleared properly and can be freed. |
| 8864 | * Now allocate missing structures. |
| 8865 | */ |
| 8866 | if( ssl->transform_negotiate == NULL ) |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 8867 | { |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 8868 | ssl->transform_negotiate = mbedtls_calloc( 1, sizeof(mbedtls_ssl_transform) ); |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 8869 | } |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8870 | |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8871 | if( ssl->session_negotiate == NULL ) |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 8872 | { |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 8873 | ssl->session_negotiate = mbedtls_calloc( 1, sizeof(mbedtls_ssl_session) ); |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 8874 | } |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8875 | |
Paul Bakker | 82788fb | 2014-10-20 13:59:19 +0200 | [diff] [blame] | 8876 | if( ssl->handshake == NULL ) |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 8877 | { |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 8878 | ssl->handshake = mbedtls_calloc( 1, sizeof(mbedtls_ssl_handshake_params) ); |
Paul Bakker | b9cfaa0 | 2013-10-11 18:58:55 +0200 | [diff] [blame] | 8879 | } |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8880 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 8881 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 8882 | /* If the buffers are too small - reallocate */ |
Andrzej Kurek | cd9a6ff | 2020-10-22 11:12:07 +0200 | [diff] [blame] | 8883 | handle_buffer_resizing( ssl, BUFFER_UPSIZING, MBEDTLS_SSL_IN_BUFFER_LEN, |
| 8884 | MBEDTLS_SSL_OUT_BUFFER_LEN ); |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 8885 | #endif |
| 8886 | |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8887 | /* All pointers should exist and can be directly freed without issue */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8888 | if( ssl->handshake == NULL || |
| 8889 | ssl->transform_negotiate == NULL || |
| 8890 | ssl->session_negotiate == NULL ) |
| 8891 | { |
Manuel Pégourié-Gonnard | b2a18a2 | 2015-05-27 16:29:56 +0200 | [diff] [blame] | 8892 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc() of ssl sub-contexts failed" ) ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8893 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8894 | mbedtls_free( ssl->handshake ); |
| 8895 | mbedtls_free( ssl->transform_negotiate ); |
| 8896 | mbedtls_free( ssl->session_negotiate ); |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8897 | |
| 8898 | ssl->handshake = NULL; |
| 8899 | ssl->transform_negotiate = NULL; |
| 8900 | ssl->session_negotiate = NULL; |
| 8901 | |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 8902 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8903 | } |
| 8904 | |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 8905 | /* Initialize structures */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8906 | mbedtls_ssl_session_init( ssl->session_negotiate ); |
Hanno Becker | 611a83b | 2018-01-03 14:27:32 +0000 | [diff] [blame] | 8907 | mbedtls_ssl_transform_init( ssl->transform_negotiate ); |
Paul Bakker | 968afaa | 2014-07-09 11:09:24 +0200 | [diff] [blame] | 8908 | ssl_handshake_params_init( ssl->handshake ); |
| 8909 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8910 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 8911 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 06939ce | 2015-05-11 11:25:46 +0200 | [diff] [blame] | 8912 | { |
| 8913 | ssl->handshake->alt_transform_out = ssl->transform_out; |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 8914 | |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 8915 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_CLIENT ) |
Manuel Pégourié-Gonnard | 06939ce | 2015-05-11 11:25:46 +0200 | [diff] [blame] | 8916 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_PREPARING; |
| 8917 | else |
| 8918 | ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_WAITING; |
| 8919 | } |
Manuel Pégourié-Gonnard | 5d8ba53 | 2014-09-19 15:09:21 +0200 | [diff] [blame] | 8920 | #endif |
| 8921 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 8922 | return( 0 ); |
| 8923 | } |
| 8924 | |
Manuel Pégourié-Gonnard | e057d3b | 2015-05-20 10:59:43 +0200 | [diff] [blame] | 8925 | #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | 7d38d21 | 2014-07-23 17:52:09 +0200 | [diff] [blame] | 8926 | /* Dummy cookie callbacks for defaults */ |
| 8927 | static int ssl_cookie_write_dummy( void *ctx, |
| 8928 | unsigned char **p, unsigned char *end, |
| 8929 | const unsigned char *cli_id, size_t cli_id_len ) |
| 8930 | { |
| 8931 | ((void) ctx); |
| 8932 | ((void) p); |
| 8933 | ((void) end); |
| 8934 | ((void) cli_id); |
| 8935 | ((void) cli_id_len); |
| 8936 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8937 | return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); |
Manuel Pégourié-Gonnard | 7d38d21 | 2014-07-23 17:52:09 +0200 | [diff] [blame] | 8938 | } |
| 8939 | |
| 8940 | static int ssl_cookie_check_dummy( void *ctx, |
| 8941 | const unsigned char *cookie, size_t cookie_len, |
| 8942 | const unsigned char *cli_id, size_t cli_id_len ) |
| 8943 | { |
| 8944 | ((void) ctx); |
| 8945 | ((void) cookie); |
| 8946 | ((void) cookie_len); |
| 8947 | ((void) cli_id); |
| 8948 | ((void) cli_id_len); |
| 8949 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 8950 | return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); |
Manuel Pégourié-Gonnard | 7d38d21 | 2014-07-23 17:52:09 +0200 | [diff] [blame] | 8951 | } |
Manuel Pégourié-Gonnard | e057d3b | 2015-05-20 10:59:43 +0200 | [diff] [blame] | 8952 | #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY && MBEDTLS_SSL_SRV_C */ |
Manuel Pégourié-Gonnard | 7d38d21 | 2014-07-23 17:52:09 +0200 | [diff] [blame] | 8953 | |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8954 | /* Once ssl->out_hdr as the address of the beginning of the |
| 8955 | * next outgoing record is set, deduce the other pointers. |
| 8956 | * |
| 8957 | * Note: For TLS, we save the implicit record sequence number |
| 8958 | * (entering MAC computation) in the 8 bytes before ssl->out_hdr, |
| 8959 | * and the caller has to make sure there's space for this. |
| 8960 | */ |
| 8961 | |
| 8962 | static void ssl_update_out_pointers( mbedtls_ssl_context *ssl, |
| 8963 | mbedtls_ssl_transform *transform ) |
| 8964 | { |
| 8965 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8966 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8967 | { |
| 8968 | ssl->out_ctr = ssl->out_hdr + 3; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 8969 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 70e7928 | 2019-05-03 14:34:53 +0100 | [diff] [blame] | 8970 | ssl->out_cid = ssl->out_ctr + 8; |
| 8971 | ssl->out_len = ssl->out_cid; |
| 8972 | if( transform != NULL ) |
| 8973 | ssl->out_len += transform->out_cid_len; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 8974 | #else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 70e7928 | 2019-05-03 14:34:53 +0100 | [diff] [blame] | 8975 | ssl->out_len = ssl->out_ctr + 8; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 8976 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 70e7928 | 2019-05-03 14:34:53 +0100 | [diff] [blame] | 8977 | ssl->out_iv = ssl->out_len + 2; |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8978 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8979 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 8980 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 8981 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8982 | { |
| 8983 | ssl->out_ctr = ssl->out_hdr - 8; |
| 8984 | ssl->out_len = ssl->out_hdr + 3; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 8985 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 9bf10ea | 2019-05-08 16:43:21 +0100 | [diff] [blame] | 8986 | ssl->out_cid = ssl->out_len; |
| 8987 | #endif |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8988 | ssl->out_iv = ssl->out_hdr + 5; |
| 8989 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 8990 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8991 | |
| 8992 | /* Adjust out_msg to make space for explicit IV, if used. */ |
| 8993 | if( transform != NULL && |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 8994 | mbedtls_ssl_ver_geq( |
| 8995 | mbedtls_ssl_get_minor_ver( ssl ), |
| 8996 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 8997 | { |
| 8998 | ssl->out_msg = ssl->out_iv + transform->ivlen - transform->fixed_ivlen; |
| 8999 | } |
| 9000 | else |
| 9001 | ssl->out_msg = ssl->out_iv; |
| 9002 | } |
| 9003 | |
| 9004 | /* Once ssl->in_hdr as the address of the beginning of the |
| 9005 | * next incoming record is set, deduce the other pointers. |
| 9006 | * |
| 9007 | * Note: For TLS, we save the implicit record sequence number |
| 9008 | * (entering MAC computation) in the 8 bytes before ssl->in_hdr, |
| 9009 | * and the caller has to make sure there's space for this. |
| 9010 | */ |
| 9011 | |
Hanno Becker | f5970a0 | 2019-05-08 09:38:41 +0100 | [diff] [blame] | 9012 | static void ssl_update_in_pointers( mbedtls_ssl_context *ssl ) |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9013 | { |
Hanno Becker | f5970a0 | 2019-05-08 09:38:41 +0100 | [diff] [blame] | 9014 | /* This function sets the pointers to match the case |
Hanno Becker | c360dcc | 2019-07-12 10:00:45 +0100 | [diff] [blame] | 9015 | * of unprotected TLS/DTLS records, with ssl->in_msg |
| 9016 | * pointing to the beginning of the record content. |
Hanno Becker | f5970a0 | 2019-05-08 09:38:41 +0100 | [diff] [blame] | 9017 | * |
| 9018 | * When decrypting a protected record, ssl->in_msg |
| 9019 | * will be shifted to point to the beginning of the |
| 9020 | * record plaintext. |
| 9021 | */ |
| 9022 | |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9023 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9024 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9025 | { |
Hanno Becker | 70e7928 | 2019-05-03 14:34:53 +0100 | [diff] [blame] | 9026 | /* This sets the header pointers to match records |
| 9027 | * without CID. When we receive a record containing |
| 9028 | * a CID, the fields are shifted accordingly in |
| 9029 | * ssl_parse_record_header(). */ |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9030 | ssl->in_ctr = ssl->in_hdr + 3; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 9031 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 70e7928 | 2019-05-03 14:34:53 +0100 | [diff] [blame] | 9032 | ssl->in_cid = ssl->in_ctr + 8; |
| 9033 | ssl->in_len = ssl->in_cid; /* Default: no CID */ |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 9034 | #else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | 70e7928 | 2019-05-03 14:34:53 +0100 | [diff] [blame] | 9035 | ssl->in_len = ssl->in_ctr + 8; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 9036 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | c360dcc | 2019-07-12 10:00:45 +0100 | [diff] [blame] | 9037 | ssl->in_msg = ssl->in_len + 2; |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9038 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9039 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 9040 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 9041 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9042 | { |
| 9043 | ssl->in_ctr = ssl->in_hdr - 8; |
| 9044 | ssl->in_len = ssl->in_hdr + 3; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 9045 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | 9bf10ea | 2019-05-08 16:43:21 +0100 | [diff] [blame] | 9046 | ssl->in_cid = ssl->in_len; |
| 9047 | #endif |
Hanno Becker | c360dcc | 2019-07-12 10:00:45 +0100 | [diff] [blame] | 9048 | ssl->in_msg = ssl->in_hdr + 5; |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9049 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9050 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Hanno Becker | 5aa4e2c | 2018-08-06 09:26:08 +0100 | [diff] [blame] | 9051 | } |
| 9052 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9053 | /* |
| 9054 | * Initialize an SSL context |
| 9055 | */ |
Manuel Pégourié-Gonnard | 41d479e | 2015-04-29 00:48:22 +0200 | [diff] [blame] | 9056 | void mbedtls_ssl_init( mbedtls_ssl_context *ssl ) |
| 9057 | { |
| 9058 | memset( ssl, 0, sizeof( mbedtls_ssl_context ) ); |
| 9059 | } |
| 9060 | |
| 9061 | /* |
| 9062 | * Setup an SSL context |
| 9063 | */ |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9064 | |
| 9065 | static void ssl_reset_in_out_pointers( mbedtls_ssl_context *ssl ) |
| 9066 | { |
| 9067 | /* Set the incoming and outgoing record pointers. */ |
| 9068 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9069 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9070 | { |
| 9071 | ssl->out_hdr = ssl->out_buf; |
| 9072 | ssl->in_hdr = ssl->in_buf; |
| 9073 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9074 | MBEDTLS_SSL_TRANSPORT_ELSE |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9075 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9076 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9077 | { |
| 9078 | ssl->out_hdr = ssl->out_buf + 8; |
| 9079 | ssl->in_hdr = ssl->in_buf + 8; |
| 9080 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 9081 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9082 | |
| 9083 | /* Derive other internal pointers. */ |
| 9084 | ssl_update_out_pointers( ssl, NULL /* no transform enabled */ ); |
Hanno Becker | f5970a0 | 2019-05-08 09:38:41 +0100 | [diff] [blame] | 9085 | ssl_update_in_pointers ( ssl ); |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9086 | } |
| 9087 | |
Manuel Pégourié-Gonnard | def0bbe | 2015-05-04 14:56:36 +0200 | [diff] [blame] | 9088 | int mbedtls_ssl_setup( mbedtls_ssl_context *ssl, |
Manuel Pégourié-Gonnard | 1897af9 | 2015-05-10 23:27:38 +0200 | [diff] [blame] | 9089 | const mbedtls_ssl_config *conf ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9090 | { |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9091 | int ret; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9092 | size_t in_buf_len = MBEDTLS_SSL_IN_BUFFER_LEN; |
| 9093 | size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9094 | |
Manuel Pégourié-Gonnard | def0bbe | 2015-05-04 14:56:36 +0200 | [diff] [blame] | 9095 | ssl->conf = conf; |
Paul Bakker | 62f2dee | 2012-09-28 07:31:51 +0000 | [diff] [blame] | 9096 | |
Hanno Becker | ef982d5 | 2019-07-23 15:56:18 +0100 | [diff] [blame] | 9097 | #if defined(MBEDTLS_USE_TINYCRYPT) |
| 9098 | uECC_set_rng( &uecc_rng_wrapper ); |
| 9099 | #endif |
| 9100 | |
Paul Bakker | 62f2dee | 2012-09-28 07:31:51 +0000 | [diff] [blame] | 9101 | /* |
Manuel Pégourié-Gonnard | 0619348 | 2014-02-14 08:39:32 +0100 | [diff] [blame] | 9102 | * Prepare base structures |
Paul Bakker | 62f2dee | 2012-09-28 07:31:51 +0000 | [diff] [blame] | 9103 | */ |
k-stachowiak | c9a5f02 | 2018-07-24 13:53:31 +0200 | [diff] [blame] | 9104 | |
| 9105 | /* Set to NULL in case of an error condition */ |
| 9106 | ssl->out_buf = NULL; |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9107 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9108 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 9109 | ssl->in_buf_len = in_buf_len; |
| 9110 | #endif |
| 9111 | ssl->in_buf = mbedtls_calloc( 1, in_buf_len ); |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 9112 | if( ssl->in_buf == NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9113 | { |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9114 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", in_buf_len) ); |
k-stachowiak | 9f7798e | 2018-07-31 16:52:32 +0200 | [diff] [blame] | 9115 | ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9116 | goto error; |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 9117 | } |
| 9118 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9119 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 9120 | ssl->out_buf_len = out_buf_len; |
| 9121 | #endif |
| 9122 | |
| 9123 | ssl->out_buf = mbedtls_calloc( 1, out_buf_len ); |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 9124 | if( ssl->out_buf == NULL ) |
| 9125 | { |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9126 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", out_buf_len) ); |
k-stachowiak | 9f7798e | 2018-07-31 16:52:32 +0200 | [diff] [blame] | 9127 | ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9128 | goto error; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9129 | } |
| 9130 | |
Hanno Becker | 2a43f6f | 2018-08-10 11:12:52 +0100 | [diff] [blame] | 9131 | ssl_reset_in_out_pointers( ssl ); |
Manuel Pégourié-Gonnard | 419d5ae | 2015-05-04 19:32:36 +0200 | [diff] [blame] | 9132 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9133 | if( ( ret = ssl_handshake_init( ssl ) ) != 0 ) |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9134 | goto error; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9135 | |
Hanno Becker | c8f5299 | 2019-07-25 11:15:08 +0100 | [diff] [blame] | 9136 | ssl->pending_fatal_alert_msg = MBEDTLS_SSL_ALERT_MSG_NONE; |
Hanno Becker | f46e1ce | 2019-07-03 13:56:59 +0100 | [diff] [blame] | 9137 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9138 | return( 0 ); |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9139 | |
| 9140 | error: |
| 9141 | mbedtls_free( ssl->in_buf ); |
| 9142 | mbedtls_free( ssl->out_buf ); |
| 9143 | |
| 9144 | ssl->conf = NULL; |
| 9145 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9146 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 9147 | ssl->in_buf_len = 0; |
| 9148 | ssl->out_buf_len = 0; |
| 9149 | #endif |
| 9150 | |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9151 | ssl->in_buf = NULL; |
| 9152 | ssl->out_buf = NULL; |
| 9153 | |
| 9154 | ssl->in_hdr = NULL; |
| 9155 | ssl->in_ctr = NULL; |
| 9156 | ssl->in_len = NULL; |
k-stachowiak | a47911c | 2018-07-04 17:41:58 +0200 | [diff] [blame] | 9157 | ssl->in_msg = NULL; |
| 9158 | |
| 9159 | ssl->out_hdr = NULL; |
| 9160 | ssl->out_ctr = NULL; |
| 9161 | ssl->out_len = NULL; |
| 9162 | ssl->out_iv = NULL; |
| 9163 | ssl->out_msg = NULL; |
| 9164 | |
k-stachowiak | 9f7798e | 2018-07-31 16:52:32 +0200 | [diff] [blame] | 9165 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9166 | } |
| 9167 | |
| 9168 | /* |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9169 | * Reset an initialized and used SSL context for re-use while retaining |
| 9170 | * all application-set variables, function pointers and data. |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 9171 | * |
| 9172 | * If partial is non-zero, keep data in the input buffer and client ID. |
| 9173 | * (Use when a DTLS client reconnects from the same port.) |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9174 | */ |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 9175 | static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ) |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9176 | { |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9177 | int ret; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9178 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 9179 | size_t in_buf_len = ssl->in_buf_len; |
| 9180 | size_t out_buf_len = ssl->out_buf_len; |
| 9181 | #else |
| 9182 | size_t in_buf_len = MBEDTLS_SSL_IN_BUFFER_LEN; |
| 9183 | size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN; |
| 9184 | #endif |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9185 | |
Hanno Becker | 7e77213 | 2018-08-10 12:38:21 +0100 | [diff] [blame] | 9186 | #if !defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) || \ |
| 9187 | !defined(MBEDTLS_SSL_SRV_C) |
| 9188 | ((void) partial); |
| 9189 | #endif |
| 9190 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9191 | ssl->state = MBEDTLS_SSL_HELLO_REQUEST; |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 9192 | |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 9193 | /* Cancel any possibly running timer */ |
| 9194 | ssl_set_timer( ssl, 0 ); |
| 9195 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9196 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| 9197 | ssl->renego_status = MBEDTLS_SSL_INITIAL_HANDSHAKE; |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 9198 | ssl->renego_records_seen = 0; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9199 | |
| 9200 | ssl->verify_data_len = 0; |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 9201 | mbedtls_platform_memset( ssl->own_verify_data, 0, MBEDTLS_SSL_VERIFY_DATA_MAX_LEN ); |
| 9202 | mbedtls_platform_memset( ssl->peer_verify_data, 0, MBEDTLS_SSL_VERIFY_DATA_MAX_LEN ); |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 9203 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9204 | ssl->secure_renegotiation = MBEDTLS_SSL_LEGACY_RENEGOTIATION; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9205 | |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9206 | ssl->in_offt = NULL; |
Hanno Becker | f29d470 | 2018-08-10 11:31:15 +0100 | [diff] [blame] | 9207 | ssl_reset_in_out_pointers( ssl ); |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9208 | |
| 9209 | ssl->in_msgtype = 0; |
| 9210 | ssl->in_msglen = 0; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9211 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 9212 | ssl->next_record_offset = 0; |
Manuel Pégourié-Gonnard | 246c13a | 2014-09-24 13:56:09 +0200 | [diff] [blame] | 9213 | ssl->in_epoch = 0; |
Manuel Pégourié-Gonnard | b2f3be8 | 2014-07-10 17:54:52 +0200 | [diff] [blame] | 9214 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9215 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
Manuel Pégourié-Gonnard | b47368a | 2014-09-24 13:29:58 +0200 | [diff] [blame] | 9216 | ssl_dtls_replay_reset( ssl ); |
| 9217 | #endif |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9218 | |
| 9219 | ssl->in_hslen = 0; |
| 9220 | ssl->nb_zero = 0; |
Hanno Becker | af0665d | 2017-05-24 09:16:26 +0100 | [diff] [blame] | 9221 | |
| 9222 | ssl->keep_current_message = 0; |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9223 | |
| 9224 | ssl->out_msgtype = 0; |
| 9225 | ssl->out_msglen = 0; |
| 9226 | ssl->out_left = 0; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9227 | #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
| 9228 | if( ssl->split_done != MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED ) |
Manuel Pégourié-Gonnard | cfa477e | 2015-01-07 14:50:54 +0100 | [diff] [blame] | 9229 | ssl->split_done = 0; |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 9230 | #endif |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9231 | |
Hanno Becker | 1985947 | 2018-08-06 09:40:20 +0100 | [diff] [blame] | 9232 | memset( ssl->cur_out_ctr, 0, sizeof( ssl->cur_out_ctr ) ); |
| 9233 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9234 | ssl->transform_in = NULL; |
| 9235 | ssl->transform_out = NULL; |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9236 | |
Hanno Becker | 7864090 | 2018-08-13 16:35:15 +0100 | [diff] [blame] | 9237 | ssl->session_in = NULL; |
| 9238 | ssl->session_out = NULL; |
| 9239 | |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9240 | mbedtls_platform_memset( ssl->out_buf, 0, out_buf_len ); |
Hanno Becker | 4ccbf06 | 2018-08-10 11:20:38 +0100 | [diff] [blame] | 9241 | |
| 9242 | #if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 9243 | if( partial == 0 ) |
Hanno Becker | 4ccbf06 | 2018-08-10 11:20:38 +0100 | [diff] [blame] | 9244 | #endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */ |
| 9245 | { |
| 9246 | ssl->in_left = 0; |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 9247 | mbedtls_platform_memset( ssl->in_buf, 0, in_buf_len ); |
Hanno Becker | 4ccbf06 | 2018-08-10 11:20:38 +0100 | [diff] [blame] | 9248 | } |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 9249 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9250 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 9251 | if( mbedtls_ssl_hw_record_reset != NULL ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 9252 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9253 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_reset()" ) ); |
| 9254 | if( ( ret = mbedtls_ssl_hw_record_reset( ssl ) ) != 0 ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 9255 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9256 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_reset", ret ); |
| 9257 | return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 9258 | } |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 9259 | } |
| 9260 | #endif |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 9261 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9262 | if( ssl->transform ) |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 9263 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9264 | mbedtls_ssl_transform_free( ssl->transform ); |
| 9265 | mbedtls_free( ssl->transform ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9266 | ssl->transform = NULL; |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 9267 | } |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9268 | |
Paul Bakker | c046350 | 2013-02-14 11:19:38 +0100 | [diff] [blame] | 9269 | if( ssl->session ) |
| 9270 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9271 | mbedtls_ssl_session_free( ssl->session ); |
| 9272 | mbedtls_free( ssl->session ); |
Paul Bakker | c046350 | 2013-02-14 11:19:38 +0100 | [diff] [blame] | 9273 | ssl->session = NULL; |
| 9274 | } |
| 9275 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9276 | #if defined(MBEDTLS_SSL_ALPN) |
Manuel Pégourié-Gonnard | 7e250d4 | 2014-04-04 16:08:41 +0200 | [diff] [blame] | 9277 | ssl->alpn_chosen = NULL; |
| 9278 | #endif |
| 9279 | |
Manuel Pégourié-Gonnard | e057d3b | 2015-05-20 10:59:43 +0200 | [diff] [blame] | 9280 | #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 4ccbf06 | 2018-08-10 11:20:38 +0100 | [diff] [blame] | 9281 | #if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 9282 | if( partial == 0 ) |
Hanno Becker | 4ccbf06 | 2018-08-10 11:20:38 +0100 | [diff] [blame] | 9283 | #endif |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 9284 | { |
| 9285 | mbedtls_free( ssl->cli_id ); |
| 9286 | ssl->cli_id = NULL; |
| 9287 | ssl->cli_id_len = 0; |
| 9288 | } |
Manuel Pégourié-Gonnard | 43c0218 | 2014-07-22 17:32:01 +0200 | [diff] [blame] | 9289 | #endif |
| 9290 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 9291 | if( ( ret = ssl_handshake_init( ssl ) ) != 0 ) |
| 9292 | return( ret ); |
Paul Bakker | 2770fbd | 2012-07-03 13:30:23 +0000 | [diff] [blame] | 9293 | |
| 9294 | return( 0 ); |
Paul Bakker | 7eb013f | 2011-10-06 12:37:39 +0000 | [diff] [blame] | 9295 | } |
| 9296 | |
Manuel Pégourié-Gonnard | 779e429 | 2013-08-03 13:50:48 +0200 | [diff] [blame] | 9297 | /* |
Manuel Pégourié-Gonnard | 3f09b6d | 2015-09-08 11:58:14 +0200 | [diff] [blame] | 9298 | * Reset an initialized and used SSL context for re-use while retaining |
| 9299 | * all application-set variables, function pointers and data. |
| 9300 | */ |
| 9301 | int mbedtls_ssl_session_reset( mbedtls_ssl_context *ssl ) |
| 9302 | { |
| 9303 | return( ssl_session_reset_int( ssl, 0 ) ); |
| 9304 | } |
| 9305 | |
| 9306 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9307 | * SSL set accessors |
| 9308 | */ |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 9309 | #if !defined(MBEDTLS_SSL_CONF_ENDPOINT) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9310 | void mbedtls_ssl_conf_endpoint( mbedtls_ssl_config *conf, int endpoint ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9311 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9312 | conf->endpoint = endpoint; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9313 | } |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 9314 | #endif /* MBEDTLS_SSL_CONF_ENDPOINT */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9315 | |
Manuel Pégourié-Gonnard | 01e5e8c | 2015-05-11 10:11:56 +0200 | [diff] [blame] | 9316 | void mbedtls_ssl_conf_transport( mbedtls_ssl_config *conf, int transport ) |
Manuel Pégourié-Gonnard | 0b1ff29 | 2014-02-06 13:04:16 +0100 | [diff] [blame] | 9317 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9318 | conf->transport = transport; |
Manuel Pégourié-Gonnard | 0b1ff29 | 2014-02-06 13:04:16 +0100 | [diff] [blame] | 9319 | } |
| 9320 | |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 9321 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) && \ |
| 9322 | !defined(MBEDTLS_SSL_CONF_ANTI_REPLAY) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9323 | void mbedtls_ssl_conf_dtls_anti_replay( mbedtls_ssl_config *conf, char mode ) |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 9324 | { |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 9325 | conf->anti_replay = mode; |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 9326 | } |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 9327 | #endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY && !MBEDTLS_SSL_CONF_ANTI_REPLAY */ |
Manuel Pégourié-Gonnard | 2739313 | 2014-09-24 14:41:11 +0200 | [diff] [blame] | 9328 | |
Hanno Becker | de67154 | 2019-06-12 16:30:46 +0100 | [diff] [blame] | 9329 | #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) && \ |
| 9330 | !defined(MBEDTLS_SSL_CONF_BADMAC_LIMIT) |
| 9331 | void mbedtls_ssl_conf_dtls_badmac_limit( mbedtls_ssl_config *conf, |
| 9332 | unsigned limit ) |
Manuel Pégourié-Gonnard | b0643d1 | 2014-10-14 18:30:36 +0200 | [diff] [blame] | 9333 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9334 | conf->badmac_limit = limit; |
Manuel Pégourié-Gonnard | b0643d1 | 2014-10-14 18:30:36 +0200 | [diff] [blame] | 9335 | } |
Hanno Becker | de67154 | 2019-06-12 16:30:46 +0100 | [diff] [blame] | 9336 | #endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT && !MBEDTLS_SSL_CONF_BADMAC_LIMIT */ |
Manuel Pégourié-Gonnard | b0643d1 | 2014-10-14 18:30:36 +0200 | [diff] [blame] | 9337 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9338 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | 04da189 | 2018-08-14 13:22:10 +0100 | [diff] [blame] | 9339 | |
Hanno Becker | 1841b0a | 2018-08-24 11:13:57 +0100 | [diff] [blame] | 9340 | void mbedtls_ssl_set_datagram_packing( mbedtls_ssl_context *ssl, |
| 9341 | unsigned allow_packing ) |
Hanno Becker | 04da189 | 2018-08-14 13:22:10 +0100 | [diff] [blame] | 9342 | { |
| 9343 | ssl->disable_datagram_packing = !allow_packing; |
| 9344 | } |
| 9345 | |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 9346 | #if !( defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX) && \ |
| 9347 | defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN) ) |
Hanno Becker | 04da189 | 2018-08-14 13:22:10 +0100 | [diff] [blame] | 9348 | void mbedtls_ssl_conf_handshake_timeout( mbedtls_ssl_config *conf, |
| 9349 | uint32_t min, uint32_t max ) |
Manuel Pégourié-Gonnard | 905dd24 | 2014-10-01 12:03:55 +0200 | [diff] [blame] | 9350 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9351 | conf->hs_timeout_min = min; |
| 9352 | conf->hs_timeout_max = max; |
Manuel Pégourié-Gonnard | 905dd24 | 2014-10-01 12:03:55 +0200 | [diff] [blame] | 9353 | } |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 9354 | #else /* !( MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN && |
| 9355 | MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX ) */ |
| 9356 | void mbedtls_ssl_conf_handshake_timeout( mbedtls_ssl_config *conf, |
| 9357 | uint32_t min, uint32_t max ) |
| 9358 | { |
| 9359 | ((void) conf); |
| 9360 | ((void) min); |
| 9361 | ((void) max); |
| 9362 | } |
| 9363 | #endif /* MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN && |
| 9364 | MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX */ |
| 9365 | |
| 9366 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | 905dd24 | 2014-10-01 12:03:55 +0200 | [diff] [blame] | 9367 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9368 | void mbedtls_ssl_conf_authmode( mbedtls_ssl_config *conf, int authmode ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9369 | { |
Hanno Becker | acd4fc0 | 2019-06-12 16:40:50 +0100 | [diff] [blame] | 9370 | #if !defined(MBEDTLS_SSL_CONF_AUTHMODE) |
| 9371 | conf->authmode = authmode; |
| 9372 | #else |
| 9373 | ((void) conf); |
| 9374 | ((void) authmode); |
| 9375 | #endif /* MBEDTLS_SSL_CONF_AUTHMODE */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9376 | } |
| 9377 | |
Hanno Becker | 9ec3fe0 | 2019-07-01 17:36:12 +0100 | [diff] [blame] | 9378 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && \ |
| 9379 | !defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9380 | void mbedtls_ssl_conf_verify( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | e6ef16f | 2015-05-11 19:54:43 +0200 | [diff] [blame] | 9381 | int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 9382 | void *p_vrfy ) |
| 9383 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9384 | conf->f_vrfy = f_vrfy; |
| 9385 | conf->p_vrfy = p_vrfy; |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 9386 | } |
Hanno Becker | 9ec3fe0 | 2019-07-01 17:36:12 +0100 | [diff] [blame] | 9387 | #endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */ |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 9388 | |
Hanno Becker | ece325c | 2019-06-13 15:39:27 +0100 | [diff] [blame] | 9389 | #if !defined(MBEDTLS_SSL_CONF_RNG) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9390 | void mbedtls_ssl_conf_rng( mbedtls_ssl_config *conf, |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 9391 | int (*f_rng)(void *, unsigned char *, size_t), |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9392 | void *p_rng ) |
| 9393 | { |
Manuel Pégourié-Gonnard | 750e4d7 | 2015-05-07 12:35:38 +0100 | [diff] [blame] | 9394 | conf->f_rng = f_rng; |
| 9395 | conf->p_rng = p_rng; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9396 | } |
Hanno Becker | ece325c | 2019-06-13 15:39:27 +0100 | [diff] [blame] | 9397 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9398 | |
Hanno Becker | 14a4a44 | 2019-07-02 17:00:34 +0100 | [diff] [blame] | 9399 | #if defined(MBEDTLS_DEBUG_C) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9400 | void mbedtls_ssl_conf_dbg( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | fd47423 | 2015-06-23 16:34:24 +0200 | [diff] [blame] | 9401 | void (*f_dbg)(void *, int, const char *, int, const char *), |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9402 | void *p_dbg ) |
| 9403 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9404 | conf->f_dbg = f_dbg; |
| 9405 | conf->p_dbg = p_dbg; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9406 | } |
Hanno Becker | 14a4a44 | 2019-07-02 17:00:34 +0100 | [diff] [blame] | 9407 | #endif /* MBEDTLS_DEBUG_C */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9408 | |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 9409 | #if !defined(MBEDTLS_SSL_CONF_RECV) && \ |
| 9410 | !defined(MBEDTLS_SSL_CONF_SEND) && \ |
| 9411 | !defined(MBEDTLS_SSL_CONF_RECV_TIMEOUT) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9412 | void mbedtls_ssl_set_bio( mbedtls_ssl_context *ssl, |
Manuel Pégourié-Gonnard | 8fa6dfd | 2014-09-17 10:47:43 +0200 | [diff] [blame] | 9413 | void *p_bio, |
Simon Butcher | e846b51 | 2016-03-01 17:31:49 +0000 | [diff] [blame] | 9414 | mbedtls_ssl_send_t *f_send, |
| 9415 | mbedtls_ssl_recv_t *f_recv, |
| 9416 | mbedtls_ssl_recv_timeout_t *f_recv_timeout ) |
Manuel Pégourié-Gonnard | 8fa6dfd | 2014-09-17 10:47:43 +0200 | [diff] [blame] | 9417 | { |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 9418 | ssl->p_bio = p_bio; |
| 9419 | ssl->f_send = f_send; |
| 9420 | ssl->f_recv = f_recv; |
Manuel Pégourié-Gonnard | 8fa6dfd | 2014-09-17 10:47:43 +0200 | [diff] [blame] | 9421 | ssl->f_recv_timeout = f_recv_timeout; |
Manuel Pégourié-Gonnard | 97fd52c | 2015-05-06 15:38:52 +0100 | [diff] [blame] | 9422 | } |
Hanno Becker | a58a896 | 2019-06-13 16:11:15 +0100 | [diff] [blame] | 9423 | #else |
| 9424 | void mbedtls_ssl_set_bio_ctx( mbedtls_ssl_context *ssl, |
| 9425 | void *p_bio ) |
| 9426 | { |
| 9427 | ssl->p_bio = p_bio; |
| 9428 | } |
| 9429 | #endif |
Manuel Pégourié-Gonnard | 97fd52c | 2015-05-06 15:38:52 +0100 | [diff] [blame] | 9430 | |
Manuel Pégourié-Gonnard | 6e7aaca | 2018-08-20 10:37:23 +0200 | [diff] [blame] | 9431 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 9432 | void mbedtls_ssl_set_mtu( mbedtls_ssl_context *ssl, uint16_t mtu ) |
| 9433 | { |
| 9434 | ssl->mtu = mtu; |
| 9435 | } |
| 9436 | #endif |
| 9437 | |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 9438 | #if !defined(MBEDTLS_SSL_CONF_READ_TIMEOUT) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9439 | void mbedtls_ssl_conf_read_timeout( mbedtls_ssl_config *conf, uint32_t timeout ) |
Manuel Pégourié-Gonnard | 97fd52c | 2015-05-06 15:38:52 +0100 | [diff] [blame] | 9440 | { |
| 9441 | conf->read_timeout = timeout; |
Manuel Pégourié-Gonnard | 8fa6dfd | 2014-09-17 10:47:43 +0200 | [diff] [blame] | 9442 | } |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 9443 | #endif /* MBEDTLS_SSL_CONF_READ_TIMEOUT */ |
Manuel Pégourié-Gonnard | 8fa6dfd | 2014-09-17 10:47:43 +0200 | [diff] [blame] | 9444 | |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 9445 | #if !defined(MBEDTLS_SSL_CONF_SET_TIMER) && \ |
| 9446 | !defined(MBEDTLS_SSL_CONF_GET_TIMER) |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 9447 | void mbedtls_ssl_set_timer_cb( mbedtls_ssl_context *ssl, |
| 9448 | void *p_timer, |
Simon Butcher | e846b51 | 2016-03-01 17:31:49 +0000 | [diff] [blame] | 9449 | mbedtls_ssl_set_timer_t *f_set_timer, |
| 9450 | mbedtls_ssl_get_timer_t *f_get_timer ) |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 9451 | { |
| 9452 | ssl->p_timer = p_timer; |
| 9453 | ssl->f_set_timer = f_set_timer; |
| 9454 | ssl->f_get_timer = f_get_timer; |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 9455 | /* Make sure we start with no timer running */ |
| 9456 | ssl_set_timer( ssl, 0 ); |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 9457 | } |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 9458 | #else |
| 9459 | void mbedtls_ssl_set_timer_cb_ctx( mbedtls_ssl_context *ssl, |
| 9460 | void *p_timer ) |
| 9461 | { |
| 9462 | ssl->p_timer = p_timer; |
| 9463 | /* Make sure we start with no timer running */ |
| 9464 | ssl_set_timer( ssl, 0 ); |
| 9465 | } |
| 9466 | #endif |
Manuel Pégourié-Gonnard | 2e01291 | 2015-05-12 20:55:41 +0200 | [diff] [blame] | 9467 | |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 9468 | #if defined(MBEDTLS_SSL_SRV_C) && !defined(MBEDTLS_SSL_NO_SESSION_CACHE) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9469 | void mbedtls_ssl_conf_session_cache( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | 5cb3308 | 2015-05-06 18:06:26 +0100 | [diff] [blame] | 9470 | void *p_cache, |
| 9471 | int (*f_get_cache)(void *, mbedtls_ssl_session *), |
| 9472 | int (*f_set_cache)(void *, const mbedtls_ssl_session *) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9473 | { |
Manuel Pégourié-Gonnard | 5cb3308 | 2015-05-06 18:06:26 +0100 | [diff] [blame] | 9474 | conf->p_cache = p_cache; |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9475 | conf->f_get_cache = f_get_cache; |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9476 | conf->f_set_cache = f_set_cache; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9477 | } |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 9478 | #endif /* MBEDTLS_SSL_SRV_C && !MBEDTLS_SSL_NO_SESSION_CACHE */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9479 | |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 9480 | #if defined(MBEDTLS_SSL_CLI_C) && !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9481 | int mbedtls_ssl_set_session( mbedtls_ssl_context *ssl, const mbedtls_ssl_session *session ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9482 | { |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 9483 | int ret; |
| 9484 | |
| 9485 | if( ssl == NULL || |
| 9486 | session == NULL || |
| 9487 | ssl->session_negotiate == NULL || |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 9488 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) != MBEDTLS_SSL_IS_CLIENT ) |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 9489 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9490 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 9491 | } |
| 9492 | |
Hanno Becker | 58fccf2 | 2019-02-06 14:30:46 +0000 | [diff] [blame] | 9493 | if( ( ret = mbedtls_ssl_session_copy( ssl->session_negotiate, |
| 9494 | session ) ) != 0 ) |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 9495 | return( ret ); |
| 9496 | |
Jarno Lamsa | 8d09e57 | 2019-12-19 15:20:19 +0200 | [diff] [blame] | 9497 | ssl->handshake->resume = MBEDTLS_SSL_FI_FLAG_SET; |
Manuel Pégourié-Gonnard | 06650f6 | 2013-08-02 15:34:52 +0200 | [diff] [blame] | 9498 | |
| 9499 | return( 0 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9500 | } |
Jarno Lamsa | 29f2dd0 | 2019-06-20 15:31:52 +0300 | [diff] [blame] | 9501 | #endif /* MBEDTLS_SSL_CLI_C && !MBEDTLS_SSL_NO_SESSION_RESUMPTION */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9502 | |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 9503 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9504 | void mbedtls_ssl_conf_ciphersuites( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9505 | const int *ciphersuites ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9506 | { |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 9507 | conf->ciphersuite_list[0] = ciphersuites; |
| 9508 | conf->ciphersuite_list[1] = ciphersuites; |
| 9509 | conf->ciphersuite_list[2] = ciphersuites; |
| 9510 | conf->ciphersuite_list[3] = ciphersuites; |
Paul Bakker | 8f4ddae | 2013-04-15 15:09:54 +0200 | [diff] [blame] | 9511 | } |
| 9512 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9513 | void mbedtls_ssl_conf_ciphersuites_for_version( mbedtls_ssl_config *conf, |
Paul Bakker | b9e4e2c | 2014-05-01 14:18:25 +0200 | [diff] [blame] | 9514 | const int *ciphersuites, |
Paul Bakker | 8f4ddae | 2013-04-15 15:09:54 +0200 | [diff] [blame] | 9515 | int major, int minor ) |
| 9516 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9517 | if( major != MBEDTLS_SSL_MAJOR_VERSION_3 ) |
Paul Bakker | 8f4ddae | 2013-04-15 15:09:54 +0200 | [diff] [blame] | 9518 | return; |
| 9519 | |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 9520 | if( mbedtls_ssl_ver_lt( minor, MBEDTLS_SSL_MINOR_VERSION_0 ) || |
| 9521 | mbedtls_ssl_ver_gt( minor, MBEDTLS_SSL_MINOR_VERSION_3 ) ) |
| 9522 | { |
Paul Bakker | 8f4ddae | 2013-04-15 15:09:54 +0200 | [diff] [blame] | 9523 | return; |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 9524 | } |
Paul Bakker | 8f4ddae | 2013-04-15 15:09:54 +0200 | [diff] [blame] | 9525 | |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 9526 | conf->ciphersuite_list[mbedtls_ssl_minor_ver_index( minor )] = |
| 9527 | ciphersuites; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9528 | } |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 9529 | #endif /* MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9530 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9531 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Manuel Pégourié-Gonnard | 6e3ee3a | 2015-06-17 10:58:20 +0200 | [diff] [blame] | 9532 | void mbedtls_ssl_conf_cert_profile( mbedtls_ssl_config *conf, |
Nicholas Wilson | 2088e2e | 2015-09-08 16:53:18 +0100 | [diff] [blame] | 9533 | const mbedtls_x509_crt_profile *profile ) |
Manuel Pégourié-Gonnard | 6e3ee3a | 2015-06-17 10:58:20 +0200 | [diff] [blame] | 9534 | { |
| 9535 | conf->cert_profile = profile; |
| 9536 | } |
| 9537 | |
Manuel Pégourié-Gonnard | 8f618a8 | 2015-05-10 21:13:36 +0200 | [diff] [blame] | 9538 | /* Append a new keycert entry to a (possibly empty) list */ |
| 9539 | static int ssl_append_key_cert( mbedtls_ssl_key_cert **head, |
| 9540 | mbedtls_x509_crt *cert, |
| 9541 | mbedtls_pk_context *key ) |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9542 | { |
niisato | 8ee2422 | 2018-06-25 19:05:48 +0900 | [diff] [blame] | 9543 | mbedtls_ssl_key_cert *new_cert; |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9544 | |
niisato | 8ee2422 | 2018-06-25 19:05:48 +0900 | [diff] [blame] | 9545 | new_cert = mbedtls_calloc( 1, sizeof( mbedtls_ssl_key_cert ) ); |
| 9546 | if( new_cert == NULL ) |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 9547 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9548 | |
niisato | 8ee2422 | 2018-06-25 19:05:48 +0900 | [diff] [blame] | 9549 | new_cert->cert = cert; |
| 9550 | new_cert->key = key; |
| 9551 | new_cert->next = NULL; |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9552 | |
Manuel Pégourié-Gonnard | 8f618a8 | 2015-05-10 21:13:36 +0200 | [diff] [blame] | 9553 | /* Update head is the list was null, else add to the end */ |
| 9554 | if( *head == NULL ) |
Paul Bakker | 0333b97 | 2013-11-04 17:08:28 +0100 | [diff] [blame] | 9555 | { |
niisato | 8ee2422 | 2018-06-25 19:05:48 +0900 | [diff] [blame] | 9556 | *head = new_cert; |
Paul Bakker | 0333b97 | 2013-11-04 17:08:28 +0100 | [diff] [blame] | 9557 | } |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9558 | else |
| 9559 | { |
Manuel Pégourié-Gonnard | 8f618a8 | 2015-05-10 21:13:36 +0200 | [diff] [blame] | 9560 | mbedtls_ssl_key_cert *cur = *head; |
| 9561 | while( cur->next != NULL ) |
| 9562 | cur = cur->next; |
niisato | 8ee2422 | 2018-06-25 19:05:48 +0900 | [diff] [blame] | 9563 | cur->next = new_cert; |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9564 | } |
| 9565 | |
Manuel Pégourié-Gonnard | 8f618a8 | 2015-05-10 21:13:36 +0200 | [diff] [blame] | 9566 | return( 0 ); |
| 9567 | } |
| 9568 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9569 | int mbedtls_ssl_conf_own_cert( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | 8f618a8 | 2015-05-10 21:13:36 +0200 | [diff] [blame] | 9570 | mbedtls_x509_crt *own_cert, |
| 9571 | mbedtls_pk_context *pk_key ) |
| 9572 | { |
Manuel Pégourié-Gonnard | 17a40cd | 2015-05-10 23:17:17 +0200 | [diff] [blame] | 9573 | return( ssl_append_key_cert( &conf->key_cert, own_cert, pk_key ) ); |
Manuel Pégourié-Gonnard | 834ea85 | 2013-09-23 14:46:13 +0200 | [diff] [blame] | 9574 | } |
| 9575 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9576 | void mbedtls_ssl_conf_ca_chain( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | bc2b771 | 2015-05-06 11:14:19 +0100 | [diff] [blame] | 9577 | mbedtls_x509_crt *ca_chain, |
| 9578 | mbedtls_x509_crl *ca_crl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9579 | { |
Manuel Pégourié-Gonnard | bc2b771 | 2015-05-06 11:14:19 +0100 | [diff] [blame] | 9580 | conf->ca_chain = ca_chain; |
| 9581 | conf->ca_crl = ca_crl; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9582 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9583 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
Paul Bakker | eb2c658 | 2012-09-27 19:15:01 +0000 | [diff] [blame] | 9584 | |
Manuel Pégourié-Gonnard | 1af6c85 | 2015-05-10 23:10:37 +0200 | [diff] [blame] | 9585 | #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
| 9586 | int mbedtls_ssl_set_hs_own_cert( mbedtls_ssl_context *ssl, |
| 9587 | mbedtls_x509_crt *own_cert, |
| 9588 | mbedtls_pk_context *pk_key ) |
| 9589 | { |
| 9590 | return( ssl_append_key_cert( &ssl->handshake->sni_key_cert, |
| 9591 | own_cert, pk_key ) ); |
| 9592 | } |
Manuel Pégourié-Gonnard | 22bfa4b | 2015-05-11 08:46:37 +0200 | [diff] [blame] | 9593 | |
| 9594 | void mbedtls_ssl_set_hs_ca_chain( mbedtls_ssl_context *ssl, |
| 9595 | mbedtls_x509_crt *ca_chain, |
| 9596 | mbedtls_x509_crl *ca_crl ) |
| 9597 | { |
| 9598 | ssl->handshake->sni_ca_chain = ca_chain; |
| 9599 | ssl->handshake->sni_ca_crl = ca_crl; |
| 9600 | } |
Manuel Pégourié-Gonnard | cdc26ae | 2015-06-19 12:16:31 +0200 | [diff] [blame] | 9601 | |
| 9602 | void mbedtls_ssl_set_hs_authmode( mbedtls_ssl_context *ssl, |
| 9603 | int authmode ) |
| 9604 | { |
| 9605 | ssl->handshake->sni_authmode = authmode; |
| 9606 | } |
Manuel Pégourié-Gonnard | 1af6c85 | 2015-05-10 23:10:37 +0200 | [diff] [blame] | 9607 | #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */ |
| 9608 | |
Manuel Pégourié-Gonnard | eef142d | 2015-09-16 10:05:04 +0200 | [diff] [blame] | 9609 | #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) |
Manuel Pégourié-Gonnard | 7002f4a | 2015-09-15 12:43:43 +0200 | [diff] [blame] | 9610 | /* |
| 9611 | * Set EC J-PAKE password for current handshake |
| 9612 | */ |
| 9613 | int mbedtls_ssl_set_hs_ecjpake_password( mbedtls_ssl_context *ssl, |
| 9614 | const unsigned char *pw, |
| 9615 | size_t pw_len ) |
| 9616 | { |
| 9617 | mbedtls_ecjpake_role role; |
| 9618 | |
Janos Follath | 8eb6413 | 2016-06-03 15:40:57 +0100 | [diff] [blame] | 9619 | if( ssl->handshake == NULL || ssl->conf == NULL ) |
Manuel Pégourié-Gonnard | 7002f4a | 2015-09-15 12:43:43 +0200 | [diff] [blame] | 9620 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 9621 | |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 9622 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_SERVER ) |
Manuel Pégourié-Gonnard | 7002f4a | 2015-09-15 12:43:43 +0200 | [diff] [blame] | 9623 | role = MBEDTLS_ECJPAKE_SERVER; |
| 9624 | else |
| 9625 | role = MBEDTLS_ECJPAKE_CLIENT; |
| 9626 | |
| 9627 | return( mbedtls_ecjpake_setup( &ssl->handshake->ecjpake_ctx, |
| 9628 | role, |
| 9629 | MBEDTLS_MD_SHA256, |
| 9630 | MBEDTLS_ECP_DP_SECP256R1, |
| 9631 | pw, pw_len ) ); |
| 9632 | } |
Manuel Pégourié-Gonnard | eef142d | 2015-09-16 10:05:04 +0200 | [diff] [blame] | 9633 | #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */ |
Manuel Pégourié-Gonnard | 7002f4a | 2015-09-15 12:43:43 +0200 | [diff] [blame] | 9634 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9635 | #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9636 | int mbedtls_ssl_conf_psk( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 9637 | const unsigned char *psk, size_t psk_len, |
| 9638 | const unsigned char *psk_identity, size_t psk_identity_len ) |
Paul Bakker | d4a56ec | 2013-04-16 18:05:29 +0200 | [diff] [blame] | 9639 | { |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9640 | if( psk == NULL || psk_identity == NULL ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9641 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9642 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9643 | if( psk_len > MBEDTLS_PSK_MAX_LEN ) |
| 9644 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | b2bf5a1 | 2014-03-25 16:28:12 +0100 | [diff] [blame] | 9645 | |
Manuel Pégourié-Gonnard | c6b5d83 | 2015-08-27 16:37:35 +0200 | [diff] [blame] | 9646 | /* Identity len will be encoded on two bytes */ |
| 9647 | if( ( psk_identity_len >> 16 ) != 0 || |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 9648 | psk_identity_len > MBEDTLS_SSL_OUT_CONTENT_LEN ) |
Manuel Pégourié-Gonnard | c6b5d83 | 2015-08-27 16:37:35 +0200 | [diff] [blame] | 9649 | { |
| 9650 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 9651 | } |
| 9652 | |
Andres Amaya Garcia | bbafd34 | 2017-07-05 14:25:21 +0100 | [diff] [blame] | 9653 | if( conf->psk != NULL ) |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9654 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 9655 | mbedtls_platform_zeroize( conf->psk, conf->psk_len ); |
Andres Amaya Garcia | bbafd34 | 2017-07-05 14:25:21 +0100 | [diff] [blame] | 9656 | |
Manuel Pégourié-Gonnard | 120fdbd | 2015-05-07 17:07:50 +0100 | [diff] [blame] | 9657 | mbedtls_free( conf->psk ); |
Manuel Pégourié-Gonnard | 173c790 | 2015-10-20 19:56:45 +0200 | [diff] [blame] | 9658 | conf->psk = NULL; |
Andres Amaya Garcia | bbafd34 | 2017-07-05 14:25:21 +0100 | [diff] [blame] | 9659 | conf->psk_len = 0; |
| 9660 | } |
| 9661 | if( conf->psk_identity != NULL ) |
| 9662 | { |
| 9663 | mbedtls_free( conf->psk_identity ); |
Manuel Pégourié-Gonnard | 173c790 | 2015-10-20 19:56:45 +0200 | [diff] [blame] | 9664 | conf->psk_identity = NULL; |
Andres Amaya Garcia | bbafd34 | 2017-07-05 14:25:21 +0100 | [diff] [blame] | 9665 | conf->psk_identity_len = 0; |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9666 | } |
| 9667 | |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 9668 | if( ( conf->psk = mbedtls_calloc( 1, psk_len ) ) == NULL || |
| 9669 | ( conf->psk_identity = mbedtls_calloc( 1, psk_identity_len ) ) == NULL ) |
Mansour Moufid | f81088b | 2015-02-17 13:10:21 -0500 | [diff] [blame] | 9670 | { |
Manuel Pégourié-Gonnard | 120fdbd | 2015-05-07 17:07:50 +0100 | [diff] [blame] | 9671 | mbedtls_free( conf->psk ); |
Manuel Pégourié-Gonnard | 24417f0 | 2015-09-28 18:09:45 +0200 | [diff] [blame] | 9672 | mbedtls_free( conf->psk_identity ); |
Manuel Pégourié-Gonnard | 120fdbd | 2015-05-07 17:07:50 +0100 | [diff] [blame] | 9673 | conf->psk = NULL; |
Manuel Pégourié-Gonnard | 24417f0 | 2015-09-28 18:09:45 +0200 | [diff] [blame] | 9674 | conf->psk_identity = NULL; |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 9675 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Mansour Moufid | f81088b | 2015-02-17 13:10:21 -0500 | [diff] [blame] | 9676 | } |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9677 | |
Manuel Pégourié-Gonnard | 120fdbd | 2015-05-07 17:07:50 +0100 | [diff] [blame] | 9678 | conf->psk_len = psk_len; |
| 9679 | conf->psk_identity_len = psk_identity_len; |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9680 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 9681 | mbedtls_platform_memcpy( conf->psk, psk, conf->psk_len ); |
| 9682 | mbedtls_platform_memcpy( conf->psk_identity, psk_identity, conf->psk_identity_len ); |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9683 | |
| 9684 | return( 0 ); |
| 9685 | } |
| 9686 | |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 9687 | int mbedtls_ssl_set_hs_psk( mbedtls_ssl_context *ssl, |
| 9688 | const unsigned char *psk, size_t psk_len ) |
| 9689 | { |
| 9690 | if( psk == NULL || ssl->handshake == NULL ) |
| 9691 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 9692 | |
| 9693 | if( psk_len > MBEDTLS_PSK_MAX_LEN ) |
| 9694 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 9695 | |
| 9696 | if( ssl->handshake->psk != NULL ) |
Andres Amaya Garcia | a004988 | 2017-06-26 11:35:17 +0100 | [diff] [blame] | 9697 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 9698 | mbedtls_platform_zeroize( ssl->handshake->psk, |
| 9699 | ssl->handshake->psk_len ); |
Simon Butcher | 5b8d1d6 | 2015-10-04 22:06:51 +0100 | [diff] [blame] | 9700 | mbedtls_free( ssl->handshake->psk ); |
Andres Amaya Garcia | bbafd34 | 2017-07-05 14:25:21 +0100 | [diff] [blame] | 9701 | ssl->handshake->psk_len = 0; |
Andres Amaya Garcia | a004988 | 2017-06-26 11:35:17 +0100 | [diff] [blame] | 9702 | } |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 9703 | |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 9704 | if( ( ssl->handshake->psk = mbedtls_calloc( 1, psk_len ) ) == NULL ) |
Manuel Pégourié-Gonnard | 6a8ca33 | 2015-05-28 09:33:39 +0200 | [diff] [blame] | 9705 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 9706 | |
| 9707 | ssl->handshake->psk_len = psk_len; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 9708 | mbedtls_platform_memcpy( ssl->handshake->psk, psk, ssl->handshake->psk_len ); |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 9709 | |
| 9710 | return( 0 ); |
| 9711 | } |
| 9712 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9713 | void mbedtls_ssl_conf_psk_cb( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9714 | int (*f_psk)(void *, mbedtls_ssl_context *, const unsigned char *, |
Paul Bakker | 6db455e | 2013-09-18 17:29:31 +0200 | [diff] [blame] | 9715 | size_t), |
| 9716 | void *p_psk ) |
| 9717 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9718 | conf->f_psk = f_psk; |
| 9719 | conf->p_psk = p_psk; |
Paul Bakker | d4a56ec | 2013-04-16 18:05:29 +0200 | [diff] [blame] | 9720 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9721 | #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */ |
Paul Bakker | 43b7e35 | 2011-01-18 15:27:19 +0000 | [diff] [blame] | 9722 | |
Manuel Pégourié-Gonnard | cf141ca | 2015-05-20 10:35:51 +0200 | [diff] [blame] | 9723 | #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 470a8c4 | 2017-10-04 15:28:46 +0100 | [diff] [blame] | 9724 | |
| 9725 | #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9726 | int mbedtls_ssl_conf_dh_param( mbedtls_ssl_config *conf, const char *dhm_P, const char *dhm_G ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9727 | { |
| 9728 | int ret; |
| 9729 | |
Manuel Pégourié-Gonnard | 1028b74 | 2015-05-06 17:33:07 +0100 | [diff] [blame] | 9730 | if( ( ret = mbedtls_mpi_read_string( &conf->dhm_P, 16, dhm_P ) ) != 0 || |
| 9731 | ( ret = mbedtls_mpi_read_string( &conf->dhm_G, 16, dhm_G ) ) != 0 ) |
| 9732 | { |
| 9733 | mbedtls_mpi_free( &conf->dhm_P ); |
| 9734 | mbedtls_mpi_free( &conf->dhm_G ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9735 | return( ret ); |
Manuel Pégourié-Gonnard | 1028b74 | 2015-05-06 17:33:07 +0100 | [diff] [blame] | 9736 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9737 | |
| 9738 | return( 0 ); |
| 9739 | } |
Hanno Becker | 470a8c4 | 2017-10-04 15:28:46 +0100 | [diff] [blame] | 9740 | #endif /* MBEDTLS_DEPRECATED_REMOVED */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9741 | |
Hanno Becker | a90658f | 2017-10-04 15:29:08 +0100 | [diff] [blame] | 9742 | int mbedtls_ssl_conf_dh_param_bin( mbedtls_ssl_config *conf, |
| 9743 | const unsigned char *dhm_P, size_t P_len, |
| 9744 | const unsigned char *dhm_G, size_t G_len ) |
| 9745 | { |
| 9746 | int ret; |
| 9747 | |
| 9748 | if( ( ret = mbedtls_mpi_read_binary( &conf->dhm_P, dhm_P, P_len ) ) != 0 || |
| 9749 | ( ret = mbedtls_mpi_read_binary( &conf->dhm_G, dhm_G, G_len ) ) != 0 ) |
| 9750 | { |
| 9751 | mbedtls_mpi_free( &conf->dhm_P ); |
| 9752 | mbedtls_mpi_free( &conf->dhm_G ); |
| 9753 | return( ret ); |
| 9754 | } |
| 9755 | |
| 9756 | return( 0 ); |
| 9757 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9758 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9759 | int mbedtls_ssl_conf_dh_param_ctx( mbedtls_ssl_config *conf, mbedtls_dhm_context *dhm_ctx ) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 9760 | { |
| 9761 | int ret; |
| 9762 | |
Manuel Pégourié-Gonnard | 1028b74 | 2015-05-06 17:33:07 +0100 | [diff] [blame] | 9763 | if( ( ret = mbedtls_mpi_copy( &conf->dhm_P, &dhm_ctx->P ) ) != 0 || |
| 9764 | ( ret = mbedtls_mpi_copy( &conf->dhm_G, &dhm_ctx->G ) ) != 0 ) |
| 9765 | { |
| 9766 | mbedtls_mpi_free( &conf->dhm_P ); |
| 9767 | mbedtls_mpi_free( &conf->dhm_G ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 9768 | return( ret ); |
Manuel Pégourié-Gonnard | 1028b74 | 2015-05-06 17:33:07 +0100 | [diff] [blame] | 9769 | } |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 9770 | |
| 9771 | return( 0 ); |
| 9772 | } |
Manuel Pégourié-Gonnard | cf141ca | 2015-05-20 10:35:51 +0200 | [diff] [blame] | 9773 | #endif /* MBEDTLS_DHM_C && MBEDTLS_SSL_SRV_C */ |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 9774 | |
Manuel Pégourié-Gonnard | bd990d6 | 2015-06-11 14:49:42 +0200 | [diff] [blame] | 9775 | #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C) |
| 9776 | /* |
| 9777 | * Set the minimum length for Diffie-Hellman parameters |
| 9778 | */ |
| 9779 | void mbedtls_ssl_conf_dhm_min_bitlen( mbedtls_ssl_config *conf, |
| 9780 | unsigned int bitlen ) |
| 9781 | { |
| 9782 | conf->dhm_min_bitlen = bitlen; |
| 9783 | } |
| 9784 | #endif /* MBEDTLS_DHM_C && MBEDTLS_SSL_CLI_C */ |
| 9785 | |
Manuel Pégourié-Gonnard | e5f3072 | 2015-10-22 17:01:15 +0200 | [diff] [blame] | 9786 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Manuel Pégourié-Gonnard | 36a8b57 | 2015-06-17 12:43:26 +0200 | [diff] [blame] | 9787 | /* |
| 9788 | * Set allowed/preferred hashes for handshake signatures |
| 9789 | */ |
| 9790 | void mbedtls_ssl_conf_sig_hashes( mbedtls_ssl_config *conf, |
| 9791 | const int *hashes ) |
| 9792 | { |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 9793 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_SIG_HASH) |
Manuel Pégourié-Gonnard | 36a8b57 | 2015-06-17 12:43:26 +0200 | [diff] [blame] | 9794 | conf->sig_hashes = hashes; |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 9795 | #else |
| 9796 | ((void) conf); |
| 9797 | ((void) hashes); |
| 9798 | #endif /* MBEDTLS_SSL_CONF_SINGLE_SIG_HASH */ |
Manuel Pégourié-Gonnard | 36a8b57 | 2015-06-17 12:43:26 +0200 | [diff] [blame] | 9799 | } |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9800 | #endif /* MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED */ |
Manuel Pégourié-Gonnard | 36a8b57 | 2015-06-17 12:43:26 +0200 | [diff] [blame] | 9801 | |
Manuel Pégourié-Gonnard | b541da6 | 2015-06-17 11:43:30 +0200 | [diff] [blame] | 9802 | #if defined(MBEDTLS_ECP_C) |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 9803 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_EC) |
Manuel Pégourié-Gonnard | 7f38ed0 | 2014-02-04 15:52:33 +0100 | [diff] [blame] | 9804 | /* |
| 9805 | * Set the allowed elliptic curves |
| 9806 | */ |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9807 | void mbedtls_ssl_conf_curves( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9808 | const mbedtls_ecp_group_id *curve_list ) |
Manuel Pégourié-Gonnard | 7f38ed0 | 2014-02-04 15:52:33 +0100 | [diff] [blame] | 9809 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9810 | conf->curve_list = curve_list; |
Manuel Pégourié-Gonnard | 7f38ed0 | 2014-02-04 15:52:33 +0100 | [diff] [blame] | 9811 | } |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 9812 | #endif /* MBEDTLS_SSL_CONF_SINGLE_EC */ |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9813 | #endif /* MBEDTLS_ECP_C */ |
Manuel Pégourié-Gonnard | 7f38ed0 | 2014-02-04 15:52:33 +0100 | [diff] [blame] | 9814 | |
Teppo Järvelin | 4009d8f | 2019-08-19 14:48:09 +0300 | [diff] [blame] | 9815 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && !defined(MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9816 | int mbedtls_ssl_set_hostname( mbedtls_ssl_context *ssl, const char *hostname ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9817 | { |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9818 | /* Initialize to suppress unnecessary compiler warning */ |
| 9819 | size_t hostname_len = 0; |
| 9820 | |
| 9821 | /* Check if new hostname is valid before |
| 9822 | * making any change to current one */ |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9823 | if( hostname != NULL ) |
| 9824 | { |
| 9825 | hostname_len = strlen( hostname ); |
| 9826 | |
| 9827 | if( hostname_len > MBEDTLS_SSL_MAX_HOST_NAME_LEN ) |
| 9828 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 9829 | } |
| 9830 | |
| 9831 | /* Now it's clear that we will overwrite the old hostname, |
| 9832 | * so we can free it safely */ |
| 9833 | |
| 9834 | if( ssl->hostname != NULL ) |
| 9835 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 9836 | mbedtls_platform_zeroize( ssl->hostname, strlen( ssl->hostname ) ); |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9837 | mbedtls_free( ssl->hostname ); |
| 9838 | } |
| 9839 | |
| 9840 | /* Passing NULL as hostname shall clear the old one */ |
Manuel Pégourié-Gonnard | ba26c24 | 2015-05-06 10:47:06 +0100 | [diff] [blame] | 9841 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9842 | if( hostname == NULL ) |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9843 | { |
| 9844 | ssl->hostname = NULL; |
| 9845 | } |
| 9846 | else |
| 9847 | { |
| 9848 | ssl->hostname = mbedtls_calloc( 1, hostname_len + 1 ); |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9849 | if( ssl->hostname == NULL ) |
| 9850 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
Paul Bakker | 75c1a6f | 2013-08-19 14:25:29 +0200 | [diff] [blame] | 9851 | |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 9852 | /* Not using more secure mbedtls_platform_memcpy as hostname is public in initial handshake */ |
| 9853 | memcpy( ssl->hostname, hostname, hostname_len ); |
Paul Bakker | 75c1a6f | 2013-08-19 14:25:29 +0200 | [diff] [blame] | 9854 | |
Hanno Becker | 947194e | 2017-04-07 13:25:49 +0100 | [diff] [blame] | 9855 | ssl->hostname[hostname_len] = '\0'; |
| 9856 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9857 | |
| 9858 | return( 0 ); |
| 9859 | } |
Teppo Järvelin | 4009d8f | 2019-08-19 14:48:09 +0300 | [diff] [blame] | 9860 | #endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 9861 | |
Manuel Pégourié-Gonnard | bc2b771 | 2015-05-06 11:14:19 +0100 | [diff] [blame] | 9862 | #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9863 | void mbedtls_ssl_conf_sni( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9864 | int (*f_sni)(void *, mbedtls_ssl_context *, |
Paul Bakker | 5701cdc | 2012-09-27 21:49:42 +0000 | [diff] [blame] | 9865 | const unsigned char *, size_t), |
| 9866 | void *p_sni ) |
| 9867 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9868 | conf->f_sni = f_sni; |
| 9869 | conf->p_sni = p_sni; |
Paul Bakker | 5701cdc | 2012-09-27 21:49:42 +0000 | [diff] [blame] | 9870 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9871 | #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */ |
Paul Bakker | 5701cdc | 2012-09-27 21:49:42 +0000 | [diff] [blame] | 9872 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9873 | #if defined(MBEDTLS_SSL_ALPN) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9874 | int mbedtls_ssl_conf_alpn_protocols( mbedtls_ssl_config *conf, const char **protos ) |
Manuel Pégourié-Gonnard | 7e250d4 | 2014-04-04 16:08:41 +0200 | [diff] [blame] | 9875 | { |
Manuel Pégourié-Gonnard | 0b874dc | 2014-04-07 10:57:45 +0200 | [diff] [blame] | 9876 | size_t cur_len, tot_len; |
| 9877 | const char **p; |
| 9878 | |
| 9879 | /* |
Brian J Murray | 1903fb3 | 2016-11-06 04:45:15 -0800 | [diff] [blame] | 9880 | * RFC 7301 3.1: "Empty strings MUST NOT be included and byte strings |
| 9881 | * MUST NOT be truncated." |
| 9882 | * We check lengths now rather than later. |
Manuel Pégourié-Gonnard | 0b874dc | 2014-04-07 10:57:45 +0200 | [diff] [blame] | 9883 | */ |
| 9884 | tot_len = 0; |
| 9885 | for( p = protos; *p != NULL; p++ ) |
| 9886 | { |
| 9887 | cur_len = strlen( *p ); |
| 9888 | tot_len += cur_len; |
| 9889 | |
| 9890 | if( cur_len == 0 || cur_len > 255 || tot_len > 65535 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9891 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 0b874dc | 2014-04-07 10:57:45 +0200 | [diff] [blame] | 9892 | } |
| 9893 | |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9894 | conf->alpn_list = protos; |
Manuel Pégourié-Gonnard | 0b874dc | 2014-04-07 10:57:45 +0200 | [diff] [blame] | 9895 | |
| 9896 | return( 0 ); |
Manuel Pégourié-Gonnard | 7e250d4 | 2014-04-04 16:08:41 +0200 | [diff] [blame] | 9897 | } |
| 9898 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9899 | const char *mbedtls_ssl_get_alpn_protocol( const mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 7e250d4 | 2014-04-04 16:08:41 +0200 | [diff] [blame] | 9900 | { |
Paul Bakker | d8bb826 | 2014-06-17 14:06:49 +0200 | [diff] [blame] | 9901 | return( ssl->alpn_chosen ); |
Manuel Pégourié-Gonnard | 7e250d4 | 2014-04-04 16:08:41 +0200 | [diff] [blame] | 9902 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9903 | #endif /* MBEDTLS_SSL_ALPN */ |
Manuel Pégourié-Gonnard | 7e250d4 | 2014-04-04 16:08:41 +0200 | [diff] [blame] | 9904 | |
Hanno Becker | 33b9b25 | 2019-07-05 11:23:25 +0100 | [diff] [blame] | 9905 | #if !defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) || \ |
| 9906 | !defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER) |
| 9907 | void mbedtls_ssl_conf_max_version( mbedtls_ssl_config *conf, |
| 9908 | int major, int minor ) |
Paul Bakker | 490ecc8 | 2011-10-06 13:04:09 +0000 | [diff] [blame] | 9909 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9910 | conf->max_major_ver = major; |
| 9911 | conf->max_minor_ver = minor; |
Paul Bakker | 490ecc8 | 2011-10-06 13:04:09 +0000 | [diff] [blame] | 9912 | } |
Hanno Becker | 33b9b25 | 2019-07-05 11:23:25 +0100 | [diff] [blame] | 9913 | #endif /* MBEDTLS_SSL_CONF_MAX_MINOR_VER || |
| 9914 | MBEDTLS_SSL_CONF_MAX_MAJOR_VER */ |
Paul Bakker | 490ecc8 | 2011-10-06 13:04:09 +0000 | [diff] [blame] | 9915 | |
Hanno Becker | 33b9b25 | 2019-07-05 11:23:25 +0100 | [diff] [blame] | 9916 | #if !defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) || \ |
| 9917 | !defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) |
| 9918 | void mbedtls_ssl_conf_min_version( mbedtls_ssl_config *conf, |
| 9919 | int major, int minor ) |
Paul Bakker | 1d29fb5 | 2012-09-28 13:28:45 +0000 | [diff] [blame] | 9920 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9921 | conf->min_major_ver = major; |
| 9922 | conf->min_minor_ver = minor; |
Paul Bakker | 1d29fb5 | 2012-09-28 13:28:45 +0000 | [diff] [blame] | 9923 | } |
Hanno Becker | 33b9b25 | 2019-07-05 11:23:25 +0100 | [diff] [blame] | 9924 | #endif /* MBEDTLS_SSL_CONF_MIN_MINOR_VER || |
| 9925 | MBEDTLS_SSL_CONF_MIN_MAJOR_VER */ |
Paul Bakker | 1d29fb5 | 2012-09-28 13:28:45 +0000 | [diff] [blame] | 9926 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9927 | #if defined(MBEDTLS_SSL_FALLBACK_SCSV) && defined(MBEDTLS_SSL_CLI_C) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9928 | void mbedtls_ssl_conf_fallback( mbedtls_ssl_config *conf, char fallback ) |
Manuel Pégourié-Gonnard | 1cbd39d | 2014-10-20 13:34:59 +0200 | [diff] [blame] | 9929 | { |
Manuel Pégourié-Gonnard | 684b059 | 2015-05-06 09:27:31 +0100 | [diff] [blame] | 9930 | conf->fallback = fallback; |
Manuel Pégourié-Gonnard | 1cbd39d | 2014-10-20 13:34:59 +0200 | [diff] [blame] | 9931 | } |
| 9932 | #endif |
| 9933 | |
Hanno Becker | c2cfdaa | 2019-06-13 12:33:03 +0100 | [diff] [blame] | 9934 | #if defined(MBEDTLS_SSL_SRV_C) && !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST) |
Janos Follath | 088ce43 | 2017-04-10 12:42:31 +0100 | [diff] [blame] | 9935 | void mbedtls_ssl_conf_cert_req_ca_list( mbedtls_ssl_config *conf, |
| 9936 | char cert_req_ca_list ) |
| 9937 | { |
| 9938 | conf->cert_req_ca_list = cert_req_ca_list; |
| 9939 | } |
| 9940 | #endif |
| 9941 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9942 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9943 | void mbedtls_ssl_conf_encrypt_then_mac( mbedtls_ssl_config *conf, char etm ) |
Manuel Pégourié-Gonnard | 699cafa | 2014-10-27 13:57:03 +0100 | [diff] [blame] | 9944 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9945 | conf->encrypt_then_mac = etm; |
Manuel Pégourié-Gonnard | 699cafa | 2014-10-27 13:57:03 +0100 | [diff] [blame] | 9946 | } |
| 9947 | #endif |
| 9948 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9949 | #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) |
Hanno Becker | f765ce6 | 2019-06-21 13:17:14 +0100 | [diff] [blame] | 9950 | #if !defined(MBEDTLS_SSL_CONF_EXTENDED_MASTER_SECRET) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9951 | void mbedtls_ssl_conf_extended_master_secret( mbedtls_ssl_config *conf, char ems ) |
Manuel Pégourié-Gonnard | 367381f | 2014-10-20 18:40:56 +0200 | [diff] [blame] | 9952 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9953 | conf->extended_ms = ems; |
Manuel Pégourié-Gonnard | 367381f | 2014-10-20 18:40:56 +0200 | [diff] [blame] | 9954 | } |
Hanno Becker | f765ce6 | 2019-06-21 13:17:14 +0100 | [diff] [blame] | 9955 | #endif /* !MBEDTLS_SSL_CONF_EXTENDED_MASTER_SECRET */ |
| 9956 | #if !defined(MBEDTLS_SSL_CONF_ENFORCE_EXTENDED_MASTER_SECRET) |
Jarno Lamsa | 7a5e2be | 2019-06-10 10:13:03 +0300 | [diff] [blame] | 9957 | void mbedtls_ssl_conf_extended_master_secret_enforce( mbedtls_ssl_config *conf, |
Jarno Lamsa | 842be16 | 2019-06-10 15:05:33 +0300 | [diff] [blame] | 9958 | char ems_enf ) |
Jarno Lamsa | 7a5e2be | 2019-06-10 10:13:03 +0300 | [diff] [blame] | 9959 | { |
| 9960 | conf->enforce_extended_master_secret = ems_enf; |
| 9961 | } |
Hanno Becker | f765ce6 | 2019-06-21 13:17:14 +0100 | [diff] [blame] | 9962 | #endif /* !MBEDTLS_SSL_CONF_ENFORCE_EXTENDED_MASTER_SECRET */ |
Hanno Becker | aabbb58 | 2019-06-11 13:43:27 +0100 | [diff] [blame] | 9963 | #endif /* !MBEDTLS_SSL_EXTENDED_MASTER_SECRET */ |
Manuel Pégourié-Gonnard | 367381f | 2014-10-20 18:40:56 +0200 | [diff] [blame] | 9964 | |
Manuel Pégourié-Gonnard | 66dc555 | 2015-05-14 12:28:21 +0200 | [diff] [blame] | 9965 | #if defined(MBEDTLS_ARC4_C) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9966 | void mbedtls_ssl_conf_arc4_support( mbedtls_ssl_config *conf, char arc4 ) |
Manuel Pégourié-Gonnard | bd47a58 | 2015-01-12 13:43:29 +0100 | [diff] [blame] | 9967 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9968 | conf->arc4_disabled = arc4; |
Manuel Pégourié-Gonnard | bd47a58 | 2015-01-12 13:43:29 +0100 | [diff] [blame] | 9969 | } |
Manuel Pégourié-Gonnard | 66dc555 | 2015-05-14 12:28:21 +0200 | [diff] [blame] | 9970 | #endif |
Manuel Pégourié-Gonnard | bd47a58 | 2015-01-12 13:43:29 +0100 | [diff] [blame] | 9971 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9972 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9973 | int mbedtls_ssl_conf_max_frag_len( mbedtls_ssl_config *conf, unsigned char mfl_code ) |
Manuel Pégourié-Gonnard | 8b46459 | 2013-07-16 12:45:26 +0200 | [diff] [blame] | 9974 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9975 | if( mfl_code >= MBEDTLS_SSL_MAX_FRAG_LEN_INVALID || |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 9976 | ssl_mfl_code_to_length( mfl_code ) > MBEDTLS_TLS_EXT_ADV_CONTENT_LEN ) |
Manuel Pégourié-Gonnard | 8b46459 | 2013-07-16 12:45:26 +0200 | [diff] [blame] | 9977 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9978 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 8b46459 | 2013-07-16 12:45:26 +0200 | [diff] [blame] | 9979 | } |
| 9980 | |
Manuel Pégourié-Gonnard | 6bf89d6 | 2015-05-05 17:01:57 +0100 | [diff] [blame] | 9981 | conf->mfl_code = mfl_code; |
Manuel Pégourié-Gonnard | 8b46459 | 2013-07-16 12:45:26 +0200 | [diff] [blame] | 9982 | |
| 9983 | return( 0 ); |
| 9984 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9985 | #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ |
Manuel Pégourié-Gonnard | 8b46459 | 2013-07-16 12:45:26 +0200 | [diff] [blame] | 9986 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9987 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
Manuel Pégourié-Gonnard | 01e5e8c | 2015-05-11 10:11:56 +0200 | [diff] [blame] | 9988 | void mbedtls_ssl_conf_truncated_hmac( mbedtls_ssl_config *conf, int truncate ) |
Manuel Pégourié-Gonnard | e980a99 | 2013-07-19 11:08:52 +0200 | [diff] [blame] | 9989 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 9990 | conf->trunc_hmac = truncate; |
Manuel Pégourié-Gonnard | e980a99 | 2013-07-19 11:08:52 +0200 | [diff] [blame] | 9991 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9992 | #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */ |
Manuel Pégourié-Gonnard | e980a99 | 2013-07-19 11:08:52 +0200 | [diff] [blame] | 9993 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 9994 | #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 9995 | void mbedtls_ssl_conf_cbc_record_splitting( mbedtls_ssl_config *conf, char split ) |
Manuel Pégourié-Gonnard | cfa477e | 2015-01-07 14:50:54 +0100 | [diff] [blame] | 9996 | { |
Manuel Pégourié-Gonnard | 17eab2b | 2015-05-05 16:34:53 +0100 | [diff] [blame] | 9997 | conf->cbc_record_splitting = split; |
Manuel Pégourié-Gonnard | cfa477e | 2015-01-07 14:50:54 +0100 | [diff] [blame] | 9998 | } |
| 9999 | #endif |
| 10000 | |
Hanno Becker | b0b2b67 | 2019-06-12 16:58:10 +0100 | [diff] [blame] | 10001 | #if !defined(MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 10002 | void mbedtls_ssl_conf_legacy_renegotiation( mbedtls_ssl_config *conf, int allow_legacy ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 10003 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 10004 | conf->allow_legacy_renegotiation = allow_legacy; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 10005 | } |
Hanno Becker | b0b2b67 | 2019-06-12 16:58:10 +0100 | [diff] [blame] | 10006 | #endif /* !MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 10007 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10008 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 10009 | void mbedtls_ssl_conf_renegotiation( mbedtls_ssl_config *conf, int renegotiation ) |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 10010 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 10011 | conf->disable_renegotiation = renegotiation; |
Manuel Pégourié-Gonnard | 615e677 | 2014-11-03 08:23:14 +0100 | [diff] [blame] | 10012 | } |
| 10013 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 10014 | void mbedtls_ssl_conf_renegotiation_enforced( mbedtls_ssl_config *conf, int max_records ) |
Manuel Pégourié-Gonnard | a9964db | 2014-07-03 19:29:16 +0200 | [diff] [blame] | 10015 | { |
Manuel Pégourié-Gonnard | d36e33f | 2015-05-05 10:45:39 +0200 | [diff] [blame] | 10016 | conf->renego_max_records = max_records; |
Manuel Pégourié-Gonnard | a9964db | 2014-07-03 19:29:16 +0200 | [diff] [blame] | 10017 | } |
| 10018 | |
Manuel Pégourié-Gonnard | 6729e79 | 2015-05-11 09:50:24 +0200 | [diff] [blame] | 10019 | void mbedtls_ssl_conf_renegotiation_period( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | 837f0fe | 2014-11-05 13:58:53 +0100 | [diff] [blame] | 10020 | const unsigned char period[8] ) |
| 10021 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10022 | mbedtls_platform_memcpy( conf->renego_period, period, 8 ); |
Manuel Pégourié-Gonnard | 837f0fe | 2014-11-05 13:58:53 +0100 | [diff] [blame] | 10023 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10024 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 10025 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10026 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 10027 | #if defined(MBEDTLS_SSL_CLI_C) |
| 10028 | void mbedtls_ssl_conf_session_tickets( mbedtls_ssl_config *conf, int use_tickets ) |
Manuel Pégourié-Gonnard | aa0d4d1 | 2013-08-03 13:02:31 +0200 | [diff] [blame] | 10029 | { |
Manuel Pégourié-Gonnard | 2b49445 | 2015-05-06 10:05:11 +0100 | [diff] [blame] | 10030 | conf->session_tickets = use_tickets; |
Manuel Pégourié-Gonnard | aa0d4d1 | 2013-08-03 13:02:31 +0200 | [diff] [blame] | 10031 | } |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 10032 | #endif |
Paul Bakker | 606b4ba | 2013-08-14 16:52:14 +0200 | [diff] [blame] | 10033 | |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 10034 | #if defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | d59675d | 2015-05-19 15:28:00 +0200 | [diff] [blame] | 10035 | void mbedtls_ssl_conf_session_tickets_cb( mbedtls_ssl_config *conf, |
| 10036 | mbedtls_ssl_ticket_write_t *f_ticket_write, |
| 10037 | mbedtls_ssl_ticket_parse_t *f_ticket_parse, |
| 10038 | void *p_ticket ) |
Paul Bakker | 606b4ba | 2013-08-14 16:52:14 +0200 | [diff] [blame] | 10039 | { |
Manuel Pégourié-Gonnard | d59675d | 2015-05-19 15:28:00 +0200 | [diff] [blame] | 10040 | conf->f_ticket_write = f_ticket_write; |
| 10041 | conf->f_ticket_parse = f_ticket_parse; |
| 10042 | conf->p_ticket = p_ticket; |
Paul Bakker | 606b4ba | 2013-08-14 16:52:14 +0200 | [diff] [blame] | 10043 | } |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 10044 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10045 | #endif /* MBEDTLS_SSL_SESSION_TICKETS */ |
Manuel Pégourié-Gonnard | aa0d4d1 | 2013-08-03 13:02:31 +0200 | [diff] [blame] | 10046 | |
Robert Cragie | 4feb7ae | 2015-10-02 13:33:37 +0100 | [diff] [blame] | 10047 | #if defined(MBEDTLS_SSL_EXPORT_KEYS) |
| 10048 | void mbedtls_ssl_conf_export_keys_cb( mbedtls_ssl_config *conf, |
| 10049 | mbedtls_ssl_export_keys_t *f_export_keys, |
| 10050 | void *p_export_keys ) |
| 10051 | { |
| 10052 | conf->f_export_keys = f_export_keys; |
| 10053 | conf->p_export_keys = p_export_keys; |
| 10054 | } |
| 10055 | #endif |
| 10056 | |
Gilles Peskine | b74a1c7 | 2018-04-24 13:09:22 +0200 | [diff] [blame] | 10057 | #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) |
Gilles Peskine | 8bf79f6 | 2018-01-05 21:11:53 +0100 | [diff] [blame] | 10058 | void mbedtls_ssl_conf_async_private_cb( |
| 10059 | mbedtls_ssl_config *conf, |
| 10060 | mbedtls_ssl_async_sign_t *f_async_sign, |
| 10061 | mbedtls_ssl_async_decrypt_t *f_async_decrypt, |
| 10062 | mbedtls_ssl_async_resume_t *f_async_resume, |
| 10063 | mbedtls_ssl_async_cancel_t *f_async_cancel, |
Gilles Peskine | df13d5c | 2018-04-25 20:39:48 +0200 | [diff] [blame] | 10064 | void *async_config_data ) |
Gilles Peskine | 8bf79f6 | 2018-01-05 21:11:53 +0100 | [diff] [blame] | 10065 | { |
| 10066 | conf->f_async_sign_start = f_async_sign; |
| 10067 | conf->f_async_decrypt_start = f_async_decrypt; |
| 10068 | conf->f_async_resume = f_async_resume; |
| 10069 | conf->f_async_cancel = f_async_cancel; |
Gilles Peskine | df13d5c | 2018-04-25 20:39:48 +0200 | [diff] [blame] | 10070 | conf->p_async_config_data = async_config_data; |
| 10071 | } |
| 10072 | |
Gilles Peskine | 8f97af7 | 2018-04-26 11:46:10 +0200 | [diff] [blame] | 10073 | void *mbedtls_ssl_conf_get_async_config_data( const mbedtls_ssl_config *conf ) |
| 10074 | { |
| 10075 | return( conf->p_async_config_data ); |
| 10076 | } |
| 10077 | |
Gilles Peskine | 1febfef | 2018-04-30 11:54:39 +0200 | [diff] [blame] | 10078 | void *mbedtls_ssl_get_async_operation_data( const mbedtls_ssl_context *ssl ) |
Gilles Peskine | df13d5c | 2018-04-25 20:39:48 +0200 | [diff] [blame] | 10079 | { |
| 10080 | if( ssl->handshake == NULL ) |
| 10081 | return( NULL ); |
| 10082 | else |
| 10083 | return( ssl->handshake->user_async_ctx ); |
| 10084 | } |
| 10085 | |
Gilles Peskine | 1febfef | 2018-04-30 11:54:39 +0200 | [diff] [blame] | 10086 | void mbedtls_ssl_set_async_operation_data( mbedtls_ssl_context *ssl, |
Gilles Peskine | df13d5c | 2018-04-25 20:39:48 +0200 | [diff] [blame] | 10087 | void *ctx ) |
| 10088 | { |
| 10089 | if( ssl->handshake != NULL ) |
| 10090 | ssl->handshake->user_async_ctx = ctx; |
Gilles Peskine | 8bf79f6 | 2018-01-05 21:11:53 +0100 | [diff] [blame] | 10091 | } |
Gilles Peskine | b74a1c7 | 2018-04-24 13:09:22 +0200 | [diff] [blame] | 10092 | #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ |
Gilles Peskine | 8bf79f6 | 2018-01-05 21:11:53 +0100 | [diff] [blame] | 10093 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 10094 | /* |
| 10095 | * SSL get accessors |
| 10096 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10097 | size_t mbedtls_ssl_get_bytes_avail( const mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 10098 | { |
| 10099 | return( ssl->in_offt == NULL ? 0 : ssl->in_msglen ); |
| 10100 | } |
| 10101 | |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10102 | int mbedtls_ssl_check_pending( const mbedtls_ssl_context *ssl ) |
| 10103 | { |
| 10104 | /* |
| 10105 | * Case A: We're currently holding back |
| 10106 | * a message for further processing. |
| 10107 | */ |
| 10108 | |
| 10109 | if( ssl->keep_current_message == 1 ) |
| 10110 | { |
Hanno Becker | a6fb089 | 2017-10-23 13:17:48 +0100 | [diff] [blame] | 10111 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: record held back for processing" ) ); |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10112 | return( 1 ); |
| 10113 | } |
| 10114 | |
| 10115 | /* |
| 10116 | * Case B: Further records are pending in the current datagram. |
| 10117 | */ |
| 10118 | |
| 10119 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 10120 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10121 | ssl->in_left > ssl->next_record_offset ) |
| 10122 | { |
Hanno Becker | a6fb089 | 2017-10-23 13:17:48 +0100 | [diff] [blame] | 10123 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: more records within current datagram" ) ); |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10124 | return( 1 ); |
| 10125 | } |
| 10126 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 10127 | |
| 10128 | /* |
| 10129 | * Case C: A handshake message is being processed. |
| 10130 | */ |
| 10131 | |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10132 | if( ssl->in_hslen > 0 && ssl->in_hslen < ssl->in_msglen ) |
| 10133 | { |
Hanno Becker | a6fb089 | 2017-10-23 13:17:48 +0100 | [diff] [blame] | 10134 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: more handshake messages within current record" ) ); |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10135 | return( 1 ); |
| 10136 | } |
| 10137 | |
| 10138 | /* |
| 10139 | * Case D: An application data message is being processed |
| 10140 | */ |
| 10141 | if( ssl->in_offt != NULL ) |
| 10142 | { |
Hanno Becker | a6fb089 | 2017-10-23 13:17:48 +0100 | [diff] [blame] | 10143 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: application data record is being processed" ) ); |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10144 | return( 1 ); |
| 10145 | } |
| 10146 | |
| 10147 | /* |
| 10148 | * In all other cases, the rest of the message can be dropped. |
Hanno Becker | c573ac3 | 2018-08-28 17:15:25 +0100 | [diff] [blame] | 10149 | * As in ssl_get_next_record, this needs to be adapted if |
Hanno Becker | 8b170a0 | 2017-10-10 11:51:19 +0100 | [diff] [blame] | 10150 | * we implement support for multiple alerts in single records. |
| 10151 | */ |
| 10152 | |
| 10153 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: nothing pending" ) ); |
| 10154 | return( 0 ); |
| 10155 | } |
| 10156 | |
Manuel Pégourié-Gonnard | e6ef16f | 2015-05-11 19:54:43 +0200 | [diff] [blame] | 10157 | uint32_t mbedtls_ssl_get_verify_result( const mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 10158 | { |
Manuel Pégourié-Gonnard | e89163c | 2015-01-23 14:30:57 +0000 | [diff] [blame] | 10159 | if( ssl->session != NULL ) |
| 10160 | return( ssl->session->verify_result ); |
| 10161 | |
| 10162 | if( ssl->session_negotiate != NULL ) |
| 10163 | return( ssl->session_negotiate->verify_result ); |
| 10164 | |
Manuel Pégourié-Gonnard | 6ab9b00 | 2015-05-14 11:25:04 +0200 | [diff] [blame] | 10165 | return( 0xFFFFFFFF ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 10166 | } |
| 10167 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10168 | const char *mbedtls_ssl_get_ciphersuite( const mbedtls_ssl_context *ssl ) |
Paul Bakker | 72f6266 | 2011-01-16 21:27:44 +0000 | [diff] [blame] | 10169 | { |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10170 | int suite; |
| 10171 | |
Paul Bakker | 926c8e4 | 2013-03-06 10:23:34 +0100 | [diff] [blame] | 10172 | if( ssl == NULL || ssl->session == NULL ) |
Paul Bakker | d8bb826 | 2014-06-17 14:06:49 +0200 | [diff] [blame] | 10173 | return( NULL ); |
Paul Bakker | 926c8e4 | 2013-03-06 10:23:34 +0100 | [diff] [blame] | 10174 | |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10175 | suite = mbedtls_ssl_session_get_ciphersuite( ssl->session ); |
| 10176 | return( mbedtls_ssl_get_ciphersuite_name( suite ) ); |
Paul Bakker | 72f6266 | 2011-01-16 21:27:44 +0000 | [diff] [blame] | 10177 | } |
| 10178 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10179 | const char *mbedtls_ssl_get_version( const mbedtls_ssl_context *ssl ) |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10180 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10181 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 10182 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | b21ca2a | 2014-02-10 13:43:33 +0100 | [diff] [blame] | 10183 | { |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 10184 | switch( mbedtls_ssl_get_minor_ver( ssl ) ) |
Manuel Pégourié-Gonnard | b21ca2a | 2014-02-10 13:43:33 +0100 | [diff] [blame] | 10185 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10186 | case MBEDTLS_SSL_MINOR_VERSION_2: |
Manuel Pégourié-Gonnard | b21ca2a | 2014-02-10 13:43:33 +0100 | [diff] [blame] | 10187 | return( "DTLSv1.0" ); |
| 10188 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10189 | case MBEDTLS_SSL_MINOR_VERSION_3: |
Manuel Pégourié-Gonnard | b21ca2a | 2014-02-10 13:43:33 +0100 | [diff] [blame] | 10190 | return( "DTLSv1.2" ); |
| 10191 | |
| 10192 | default: |
| 10193 | return( "unknown (DTLS)" ); |
| 10194 | } |
| 10195 | } |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10196 | MBEDTLS_SSL_TRANSPORT_ELSE |
| 10197 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 10198 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10199 | { |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 10200 | switch( mbedtls_ssl_get_minor_ver( ssl ) ) |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10201 | { |
| 10202 | case MBEDTLS_SSL_MINOR_VERSION_0: |
| 10203 | return( "SSLv3.0" ); |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10204 | |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10205 | case MBEDTLS_SSL_MINOR_VERSION_1: |
| 10206 | return( "TLSv1.0" ); |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10207 | |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10208 | case MBEDTLS_SSL_MINOR_VERSION_2: |
| 10209 | return( "TLSv1.1" ); |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10210 | |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10211 | case MBEDTLS_SSL_MINOR_VERSION_3: |
| 10212 | return( "TLSv1.2" ); |
Paul Bakker | 1ef83d6 | 2012-04-11 12:09:53 +0000 | [diff] [blame] | 10213 | |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10214 | default: |
| 10215 | return( "unknown" ); |
| 10216 | } |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10217 | } |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 10218 | #endif /* MBEDTLS_SSL_PROTO_TLS */ |
Paul Bakker | 43ca69c | 2011-01-15 17:35:19 +0000 | [diff] [blame] | 10219 | } |
| 10220 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10221 | int mbedtls_ssl_get_record_expansion( const mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10222 | { |
Hanno Becker | 3136ede | 2018-08-17 15:28:19 +0100 | [diff] [blame] | 10223 | size_t transform_expansion = 0; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10224 | const mbedtls_ssl_transform *transform = ssl->transform_out; |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10225 | |
Hanno Becker | 4339576 | 2019-05-03 14:46:38 +0100 | [diff] [blame] | 10226 | size_t out_hdr_len = mbedtls_ssl_out_hdr_len( ssl ); |
| 10227 | |
Hanno Becker | 7864090 | 2018-08-13 16:35:15 +0100 | [diff] [blame] | 10228 | if( transform == NULL ) |
Hanno Becker | 4339576 | 2019-05-03 14:46:38 +0100 | [diff] [blame] | 10229 | return( (int) out_hdr_len ); |
Hanno Becker | 7864090 | 2018-08-13 16:35:15 +0100 | [diff] [blame] | 10230 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10231 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 10232 | if( ssl->session_out->compression != MBEDTLS_SSL_COMPRESS_NULL ) |
| 10233 | return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10234 | #endif |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 10235 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 10236 | switch( mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx ) ) |
| 10237 | #else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10238 | switch( mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx_enc ) ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 10239 | #endif |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10240 | { |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10241 | #if defined(MBEDTLS_GCM_C) || \ |
| 10242 | defined(MBEDTLS_CCM_C) || \ |
| 10243 | defined(MBEDTLS_CHACHAPOLY_C) |
| 10244 | #if defined(MBEDTLS_GCM_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10245 | case MBEDTLS_MODE_GCM: |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10246 | #endif |
| 10247 | #if defined(MBEDTLS_CCM_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10248 | case MBEDTLS_MODE_CCM: |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10249 | #endif |
| 10250 | #if defined(MBEDTLS_CHACHAPOLY_C) |
Hanno Becker | 5b559ac | 2018-08-03 09:40:07 +0100 | [diff] [blame] | 10251 | case MBEDTLS_MODE_CHACHAPOLY: |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10252 | #endif |
| 10253 | transform_expansion = |
| 10254 | transform->ivlen - transform->fixed_ivlen + transform->taglen; |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10255 | break; |
| 10256 | |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10257 | #endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C || |
| 10258 | MBEDTLS_CHACHAPOLY_C */ |
| 10259 | |
| 10260 | #if defined(MBEDTLS_CIPHER_MODE_STREAM) |
| 10261 | case MBEDTLS_MODE_STREAM: |
| 10262 | transform_expansion = transform->maclen; |
| 10263 | break; |
| 10264 | #endif /* MBEDTLS_CIPHER_MODE_STREAM */ |
| 10265 | |
| 10266 | #if defined(MBEDTLS_CIPHER_MODE_CBC) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10267 | case MBEDTLS_MODE_CBC: |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10268 | { |
| 10269 | size_t block_size; |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 10270 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 10271 | block_size = mbedtls_cipher_get_block_size( |
| 10272 | &transform->cipher_ctx ); |
| 10273 | #else |
Hanno Becker | 5b559ac | 2018-08-03 09:40:07 +0100 | [diff] [blame] | 10274 | block_size = mbedtls_cipher_get_block_size( |
| 10275 | &transform->cipher_ctx_enc ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 10276 | #endif |
Hanno Becker | 3136ede | 2018-08-17 15:28:19 +0100 | [diff] [blame] | 10277 | /* Expansion due to the addition of the MAC. */ |
| 10278 | transform_expansion += transform->maclen; |
| 10279 | |
| 10280 | /* Expansion due to the addition of CBC padding; |
| 10281 | * Theoretically up to 256 bytes, but we never use |
| 10282 | * more than the block size of the underlying cipher. */ |
| 10283 | transform_expansion += block_size; |
| 10284 | |
| 10285 | /* For TLS 1.1 or higher, an explicit IV is added |
| 10286 | * after the record header. */ |
Hanno Becker | 5b559ac | 2018-08-03 09:40:07 +0100 | [diff] [blame] | 10287 | #if defined(MBEDTLS_SSL_PROTO_TLS1_1) || defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 10288 | if( mbedtls_ssl_ver_geq( |
| 10289 | mbedtls_ssl_get_minor_ver( ssl ), |
| 10290 | MBEDTLS_SSL_MINOR_VERSION_2 ) ) |
| 10291 | { |
Hanno Becker | 3136ede | 2018-08-17 15:28:19 +0100 | [diff] [blame] | 10292 | transform_expansion += block_size; |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 10293 | } |
Hanno Becker | 5b559ac | 2018-08-03 09:40:07 +0100 | [diff] [blame] | 10294 | #endif /* MBEDTLS_SSL_PROTO_TLS1_1 || MBEDTLS_SSL_PROTO_TLS1_2 */ |
Hanno Becker | 3136ede | 2018-08-17 15:28:19 +0100 | [diff] [blame] | 10295 | |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10296 | break; |
Hanno Becker | a9d5c45 | 2019-07-25 16:47:12 +0100 | [diff] [blame] | 10297 | } |
| 10298 | #endif /* MBEDTLS_CIPHER_MODE_CBC */ |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10299 | |
| 10300 | default: |
Manuel Pégourié-Gonnard | cb0d212 | 2015-07-22 11:52:11 +0200 | [diff] [blame] | 10301 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10302 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10303 | } |
| 10304 | |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 10305 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
Hanno Becker | add0190 | 2019-05-08 15:40:11 +0100 | [diff] [blame] | 10306 | if( transform->out_cid_len != 0 ) |
| 10307 | transform_expansion += MBEDTLS_SSL_MAX_CID_EXPANSION; |
Hanno Becker | a5a2b08 | 2019-05-15 14:03:01 +0100 | [diff] [blame] | 10308 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
Hanno Becker | add0190 | 2019-05-08 15:40:11 +0100 | [diff] [blame] | 10309 | |
Hanno Becker | 4339576 | 2019-05-03 14:46:38 +0100 | [diff] [blame] | 10310 | return( (int)( out_hdr_len + transform_expansion ) ); |
Manuel Pégourié-Gonnard | 9b35f18 | 2014-10-14 17:47:31 +0200 | [diff] [blame] | 10311 | } |
| 10312 | |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10313 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 10314 | size_t mbedtls_ssl_get_input_max_frag_len( const mbedtls_ssl_context *ssl ) |
| 10315 | { |
| 10316 | size_t max_len = MBEDTLS_SSL_MAX_CONTENT_LEN; |
| 10317 | size_t read_mfl; |
| 10318 | |
| 10319 | /* Use the configured MFL for the client if we're past SERVER_HELLO_DONE */ |
| 10320 | if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT && |
| 10321 | ssl->state >= MBEDTLS_SSL_SERVER_HELLO_DONE ) |
| 10322 | { |
| 10323 | return ssl_mfl_code_to_length( ssl->conf->mfl_code ); |
| 10324 | } |
| 10325 | |
| 10326 | /* Check if a smaller max length was negotiated */ |
| 10327 | if( ssl->session_out != NULL ) |
| 10328 | { |
| 10329 | read_mfl = ssl_mfl_code_to_length( ssl->session_out->mfl_code ); |
| 10330 | if( read_mfl < max_len ) |
| 10331 | { |
| 10332 | max_len = read_mfl; |
| 10333 | } |
| 10334 | } |
| 10335 | |
| 10336 | // During a handshake, use the value being negotiated |
| 10337 | if( ssl->session_negotiate != NULL ) |
| 10338 | { |
| 10339 | read_mfl = ssl_mfl_code_to_length( ssl->session_negotiate->mfl_code ); |
| 10340 | if( read_mfl < max_len ) |
| 10341 | { |
| 10342 | max_len = read_mfl; |
| 10343 | } |
| 10344 | } |
| 10345 | |
| 10346 | return( max_len ); |
| 10347 | } |
| 10348 | |
| 10349 | size_t mbedtls_ssl_get_output_max_frag_len( const mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10350 | { |
| 10351 | size_t max_len; |
| 10352 | |
| 10353 | /* |
| 10354 | * Assume mfl_code is correct since it was checked when set |
| 10355 | */ |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 10356 | max_len = ssl_mfl_code_to_length( ssl->conf->mfl_code ); |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10357 | |
Manuel Pégourié-Gonnard | 2cb17e2 | 2017-09-19 13:00:47 +0200 | [diff] [blame] | 10358 | /* Check if a smaller max length was negotiated */ |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10359 | if( ssl->session_out != NULL && |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 10360 | ssl_mfl_code_to_length( ssl->session_out->mfl_code ) < max_len ) |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10361 | { |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 10362 | max_len = ssl_mfl_code_to_length( ssl->session_out->mfl_code ); |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10363 | } |
| 10364 | |
Manuel Pégourié-Gonnard | 2cb17e2 | 2017-09-19 13:00:47 +0200 | [diff] [blame] | 10365 | /* During a handshake, use the value being negotiated */ |
| 10366 | if( ssl->session_negotiate != NULL && |
| 10367 | ssl_mfl_code_to_length( ssl->session_negotiate->mfl_code ) < max_len ) |
| 10368 | { |
| 10369 | max_len = ssl_mfl_code_to_length( ssl->session_negotiate->mfl_code ); |
| 10370 | } |
| 10371 | |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10372 | return( max_len ); |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10373 | } |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 10374 | |
| 10375 | #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
| 10376 | size_t mbedtls_ssl_get_max_frag_len( const mbedtls_ssl_context *ssl ) |
| 10377 | { |
| 10378 | return mbedtls_ssl_get_output_max_frag_len( ssl ); |
| 10379 | } |
| 10380 | #endif /* !MBEDTLS_DEPRECATED_REMOVED */ |
Manuel Pégourié-Gonnard | a2cda6b | 2015-08-31 18:30:52 +0200 | [diff] [blame] | 10381 | #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ |
| 10382 | |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 10383 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 10384 | static size_t ssl_get_current_mtu( const mbedtls_ssl_context *ssl ) |
| 10385 | { |
Andrzej Kurek | ef43ce6 | 2018-10-09 08:24:12 -0400 | [diff] [blame] | 10386 | /* Return unlimited mtu for client hello messages to avoid fragmentation. */ |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 10387 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_CLIENT && |
Andrzej Kurek | ef43ce6 | 2018-10-09 08:24:12 -0400 | [diff] [blame] | 10388 | ( ssl->state == MBEDTLS_SSL_CLIENT_HELLO || |
| 10389 | ssl->state == MBEDTLS_SSL_SERVER_HELLO ) ) |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 10390 | return( 0 ); |
Andrzej Kurek | ef43ce6 | 2018-10-09 08:24:12 -0400 | [diff] [blame] | 10391 | |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 10392 | if( ssl->handshake == NULL || ssl->handshake->mtu == 0 ) |
| 10393 | return( ssl->mtu ); |
| 10394 | |
| 10395 | if( ssl->mtu == 0 ) |
| 10396 | return( ssl->handshake->mtu ); |
| 10397 | |
| 10398 | return( ssl->mtu < ssl->handshake->mtu ? |
| 10399 | ssl->mtu : ssl->handshake->mtu ); |
| 10400 | } |
| 10401 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 10402 | |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10403 | int mbedtls_ssl_get_max_out_record_payload( const mbedtls_ssl_context *ssl ) |
| 10404 | { |
| 10405 | size_t max_len = MBEDTLS_SSL_OUT_CONTENT_LEN; |
| 10406 | |
Manuel Pégourié-Gonnard | 000281e | 2018-08-21 11:20:58 +0200 | [diff] [blame] | 10407 | #if !defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) && \ |
| 10408 | !defined(MBEDTLS_SSL_PROTO_DTLS) |
| 10409 | (void) ssl; |
| 10410 | #endif |
| 10411 | |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10412 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 10413 | const size_t mfl = mbedtls_ssl_get_output_max_frag_len( ssl ); |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10414 | |
| 10415 | if( max_len > mfl ) |
| 10416 | max_len = mfl; |
| 10417 | #endif |
| 10418 | |
| 10419 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 10420 | if( ssl_get_current_mtu( ssl ) != 0 ) |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10421 | { |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 10422 | const size_t mtu = ssl_get_current_mtu( ssl ); |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10423 | const int ret = mbedtls_ssl_get_record_expansion( ssl ); |
| 10424 | const size_t overhead = (size_t) ret; |
| 10425 | |
| 10426 | if( ret < 0 ) |
| 10427 | return( ret ); |
| 10428 | |
| 10429 | if( mtu <= overhead ) |
| 10430 | { |
| 10431 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "MTU too low for record expansion" ) ); |
| 10432 | return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); |
| 10433 | } |
| 10434 | |
| 10435 | if( max_len > mtu - overhead ) |
| 10436 | max_len = mtu - overhead; |
| 10437 | } |
Manuel Pégourié-Gonnard | b8eec19 | 2018-08-20 09:34:02 +0200 | [diff] [blame] | 10438 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10439 | |
Hanno Becker | 0defedb | 2018-08-10 12:35:02 +0100 | [diff] [blame] | 10440 | #if !defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) && \ |
| 10441 | !defined(MBEDTLS_SSL_PROTO_DTLS) |
| 10442 | ((void) ssl); |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 10443 | #endif |
| 10444 | |
| 10445 | return( (int) max_len ); |
| 10446 | } |
| 10447 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10448 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 10449 | const mbedtls_x509_crt *mbedtls_ssl_get_peer_cert( const mbedtls_ssl_context *ssl ) |
Paul Bakker | b0550d9 | 2012-10-30 07:51:03 +0000 | [diff] [blame] | 10450 | { |
| 10451 | if( ssl == NULL || ssl->session == NULL ) |
Paul Bakker | d8bb826 | 2014-06-17 14:06:49 +0200 | [diff] [blame] | 10452 | return( NULL ); |
Paul Bakker | b0550d9 | 2012-10-30 07:51:03 +0000 | [diff] [blame] | 10453 | |
Hanno Becker | bfab9df | 2019-02-07 13:18:46 +0000 | [diff] [blame] | 10454 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Paul Bakker | d8bb826 | 2014-06-17 14:06:49 +0200 | [diff] [blame] | 10455 | return( ssl->session->peer_cert ); |
Hanno Becker | bfab9df | 2019-02-07 13:18:46 +0000 | [diff] [blame] | 10456 | #else |
| 10457 | return( NULL ); |
| 10458 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
Paul Bakker | b0550d9 | 2012-10-30 07:51:03 +0000 | [diff] [blame] | 10459 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10460 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
Paul Bakker | b0550d9 | 2012-10-30 07:51:03 +0000 | [diff] [blame] | 10461 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10462 | #if defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 933b9fc | 2019-02-05 11:42:30 +0000 | [diff] [blame] | 10463 | int mbedtls_ssl_get_session( const mbedtls_ssl_context *ssl, |
| 10464 | mbedtls_ssl_session *dst ) |
Manuel Pégourié-Gonnard | 7471803 | 2013-07-30 12:41:56 +0200 | [diff] [blame] | 10465 | { |
Manuel Pégourié-Gonnard | 7471803 | 2013-07-30 12:41:56 +0200 | [diff] [blame] | 10466 | if( ssl == NULL || |
| 10467 | dst == NULL || |
| 10468 | ssl->session == NULL || |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 10469 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) != MBEDTLS_SSL_IS_CLIENT ) |
Manuel Pégourié-Gonnard | 7471803 | 2013-07-30 12:41:56 +0200 | [diff] [blame] | 10470 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10471 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 7471803 | 2013-07-30 12:41:56 +0200 | [diff] [blame] | 10472 | } |
| 10473 | |
Hanno Becker | 58fccf2 | 2019-02-06 14:30:46 +0000 | [diff] [blame] | 10474 | return( mbedtls_ssl_session_copy( dst, ssl->session ) ); |
Manuel Pégourié-Gonnard | 7471803 | 2013-07-30 12:41:56 +0200 | [diff] [blame] | 10475 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10476 | #endif /* MBEDTLS_SSL_CLI_C */ |
Manuel Pégourié-Gonnard | 7471803 | 2013-07-30 12:41:56 +0200 | [diff] [blame] | 10477 | |
Manuel Pégourié-Gonnard | 37a5324 | 2019-05-20 11:12:28 +0200 | [diff] [blame] | 10478 | const mbedtls_ssl_session *mbedtls_ssl_get_session_pointer( const mbedtls_ssl_context *ssl ) |
| 10479 | { |
| 10480 | if( ssl == NULL ) |
| 10481 | return( NULL ); |
| 10482 | |
| 10483 | return( ssl->session ); |
| 10484 | } |
| 10485 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 10486 | /* |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10487 | * Define ticket header determining Mbed TLS version |
| 10488 | * and structure of the ticket. |
| 10489 | */ |
| 10490 | |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10491 | /* |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10492 | * Define bitflag determining compile-time settings influencing |
| 10493 | * structure of serialized SSL sessions. |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10494 | */ |
| 10495 | |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10496 | #if defined(MBEDTLS_HAVE_TIME) |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10497 | #define SSL_SERIALIZED_SESSION_CONFIG_TIME 1 |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10498 | #else |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10499 | #define SSL_SERIALIZED_SESSION_CONFIG_TIME 0 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10500 | #endif /* MBEDTLS_HAVE_TIME */ |
| 10501 | |
| 10502 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10503 | #define SSL_SERIALIZED_SESSION_CONFIG_CRT 1 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10504 | #else |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10505 | #define SSL_SERIALIZED_SESSION_CONFIG_CRT 0 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10506 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
| 10507 | |
| 10508 | #if defined(MBEDTLS_SSL_CLI_C) && defined(MBEDTLS_SSL_SESSION_TICKETS) |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10509 | #define SSL_SERIALIZED_SESSION_CONFIG_CLIENT_TICKET 1 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10510 | #else |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10511 | #define SSL_SERIALIZED_SESSION_CONFIG_CLIENT_TICKET 0 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10512 | #endif /* MBEDTLS_SSL_CLI_C && MBEDTLS_SSL_SESSION_TICKETS */ |
| 10513 | |
| 10514 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10515 | #define SSL_SERIALIZED_SESSION_CONFIG_MFL 1 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10516 | #else |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10517 | #define SSL_SERIALIZED_SESSION_CONFIG_MFL 0 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10518 | #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ |
| 10519 | |
| 10520 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10521 | #define SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC 1 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10522 | #else |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10523 | #define SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC 0 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10524 | #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */ |
| 10525 | |
| 10526 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10527 | #define SSL_SERIALIZED_SESSION_CONFIG_ETM 1 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10528 | #else |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10529 | #define SSL_SERIALIZED_SESSION_CONFIG_ETM 0 |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10530 | #endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */ |
| 10531 | |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10532 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) |
| 10533 | #define SSL_SERIALIZED_SESSION_CONFIG_TICKET 1 |
| 10534 | #else |
| 10535 | #define SSL_SERIALIZED_SESSION_CONFIG_TICKET 0 |
| 10536 | #endif /* MBEDTLS_SSL_SESSION_TICKETS */ |
| 10537 | |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10538 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
| 10539 | #define SSL_SERIALIZED_SESSION_CONFIG_KEEP_CRT 1 |
| 10540 | #else |
| 10541 | #define SSL_SERIALIZED_SESSION_CONFIG_KEEP_CRT 0 |
| 10542 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
| 10543 | |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10544 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 10545 | #define SSL_SERIALIZED_SESSION_CONFIG_COMPRESSION 1 |
| 10546 | #else |
| 10547 | #define SSL_SERIALIZED_SESSION_CONFIG_COMPRESSION 0 |
| 10548 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
| 10549 | |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10550 | #define SSL_SERIALIZED_SESSION_CONFIG_TIME_BIT 0 |
| 10551 | #define SSL_SERIALIZED_SESSION_CONFIG_CRT_BIT 1 |
| 10552 | #define SSL_SERIALIZED_SESSION_CONFIG_CLIENT_TICKET_BIT 2 |
| 10553 | #define SSL_SERIALIZED_SESSION_CONFIG_MFL_BIT 3 |
| 10554 | #define SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC_BIT 4 |
| 10555 | #define SSL_SERIALIZED_SESSION_CONFIG_ETM_BIT 5 |
| 10556 | #define SSL_SERIALIZED_SESSION_CONFIG_TICKET_BIT 6 |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10557 | #define SSL_SERIALIZED_SESSION_CONFIG_KEEP_CRT_BIT 7 |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10558 | #define SSL_SERIALIZED_SESSION_CONFIG_COMPRESSION_BIT 8 |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10559 | |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10560 | #define SSL_SERIALIZED_SESSION_CONFIG_BITFLAG \ |
Hanno Becker | baf968c | 2019-05-29 11:10:18 +0100 | [diff] [blame] | 10561 | ( (uint16_t) ( \ |
| 10562 | ( SSL_SERIALIZED_SESSION_CONFIG_TIME << SSL_SERIALIZED_SESSION_CONFIG_TIME_BIT ) | \ |
| 10563 | ( SSL_SERIALIZED_SESSION_CONFIG_CRT << SSL_SERIALIZED_SESSION_CONFIG_CRT_BIT ) | \ |
| 10564 | ( SSL_SERIALIZED_SESSION_CONFIG_CLIENT_TICKET << SSL_SERIALIZED_SESSION_CONFIG_CLIENT_TICKET_BIT ) | \ |
| 10565 | ( SSL_SERIALIZED_SESSION_CONFIG_MFL << SSL_SERIALIZED_SESSION_CONFIG_MFL_BIT ) | \ |
| 10566 | ( SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC << SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC_BIT ) | \ |
| 10567 | ( SSL_SERIALIZED_SESSION_CONFIG_ETM << SSL_SERIALIZED_SESSION_CONFIG_ETM_BIT ) | \ |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10568 | ( SSL_SERIALIZED_SESSION_CONFIG_TICKET << SSL_SERIALIZED_SESSION_CONFIG_TICKET_BIT ) | \ |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10569 | ( SSL_SERIALIZED_SESSION_CONFIG_COMPRESSION << SSL_SERIALIZED_SESSION_CONFIG_COMPRESSION_BIT ) | \ |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10570 | ( SSL_SERIALIZED_SESSION_CONFIG_KEEP_CRT << SSL_SERIALIZED_SESSION_CONFIG_KEEP_CRT_BIT ) ) ) |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10571 | |
Hanno Becker | 557fe9f | 2019-05-16 12:41:07 +0100 | [diff] [blame] | 10572 | static unsigned char ssl_serialized_session_header[] = { |
Hanno Becker | 4152762 | 2019-05-16 12:50:45 +0100 | [diff] [blame] | 10573 | MBEDTLS_VERSION_MAJOR, |
| 10574 | MBEDTLS_VERSION_MINOR, |
| 10575 | MBEDTLS_VERSION_PATCH, |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10576 | ( SSL_SERIALIZED_SESSION_CONFIG_BITFLAG >> 8 ) & 0xFF, |
| 10577 | ( SSL_SERIALIZED_SESSION_CONFIG_BITFLAG >> 0 ) & 0xFF, |
Hanno Becker | 557fe9f | 2019-05-16 12:41:07 +0100 | [diff] [blame] | 10578 | }; |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10579 | |
| 10580 | /* |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10581 | * Serialize a session in the following format: |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10582 | * (in the presentation language of TLS, RFC 8446 section 3) |
| 10583 | * |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10584 | * opaque mbedtls_version[3]; // major, minor, patch |
| 10585 | * opaque session_format[2]; // version-specific 16-bit field determining |
| 10586 | * // the format of the remaining |
| 10587 | * // serialized data. |
Hanno Becker | b36db4f | 2019-05-29 11:08:00 +0100 | [diff] [blame] | 10588 | * |
| 10589 | * Note: When updating the format, remember to keep |
| 10590 | * these version+format bytes. |
| 10591 | * |
Hanno Becker | 7bf7710 | 2019-06-04 09:43:16 +0100 | [diff] [blame] | 10592 | * // In this version, `session_format` determines |
| 10593 | * // the setting of those compile-time |
| 10594 | * // configuration options which influence |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10595 | * // the structure of mbedtls_ssl_session. |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10596 | * uint64 start_time; |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10597 | * uint8 ciphersuite[2]; // defined by the standard |
| 10598 | * uint8 compression; // 0 or 1 |
| 10599 | * uint8 session_id_len; // at most 32 |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10600 | * opaque session_id[32]; |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10601 | * opaque master[48]; // fixed length in the standard |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10602 | * uint32 verify_result; |
Hanno Becker | 0528f82 | 2019-06-18 12:45:31 +0100 | [diff] [blame] | 10603 | * select (MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) { |
| 10604 | * case enabled: opaque peer_cert<0..2^24-1>; // length 0 means no cert |
| 10605 | * case disabled: uint8_t peer_cert_digest_type; |
| 10606 | * opaque peer_cert_digest<0..2^8-1>; |
| 10607 | * } |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10608 | * opaque ticket<0..2^24-1>; // length 0 means no ticket |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10609 | * uint32 ticket_lifetime; |
Hanno Becker | 26829e9 | 2019-05-28 14:30:45 +0100 | [diff] [blame] | 10610 | * uint8 mfl_code; // up to 255 according to standard |
| 10611 | * uint8 trunc_hmac; // 0 or 1 |
| 10612 | * uint8 encrypt_then_mac; // 0 or 1 |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10613 | * |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10614 | * The order is the same as in the definition of the structure, except |
| 10615 | * verify_result is put before peer_cert so that all mandatory fields come |
| 10616 | * together in one block. |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10617 | */ |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10618 | static int ssl_session_save( const mbedtls_ssl_session *session, |
| 10619 | unsigned char omit_header, |
| 10620 | unsigned char *buf, |
| 10621 | size_t buf_len, |
| 10622 | size_t *olen ) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10623 | { |
| 10624 | unsigned char *p = buf; |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10625 | size_t used = 0; |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10626 | #if defined(MBEDTLS_HAVE_TIME) |
| 10627 | uint64_t start; |
| 10628 | #endif |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10629 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10630 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10631 | size_t cert_len; |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10632 | #endif |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10633 | #endif |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10634 | |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10635 | if( !omit_header ) |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10636 | { |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10637 | /* |
| 10638 | * Add version identifier |
| 10639 | */ |
| 10640 | |
| 10641 | used += sizeof( ssl_serialized_session_header ); |
| 10642 | |
| 10643 | if( used <= buf_len ) |
| 10644 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10645 | mbedtls_platform_memcpy( p, ssl_serialized_session_header, |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10646 | sizeof( ssl_serialized_session_header ) ); |
| 10647 | p += sizeof( ssl_serialized_session_header ); |
| 10648 | } |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10649 | } |
| 10650 | |
| 10651 | /* |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10652 | * Time |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10653 | */ |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10654 | #if defined(MBEDTLS_HAVE_TIME) |
| 10655 | used += 8; |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10656 | |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10657 | if( used <= buf_len ) |
| 10658 | { |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10659 | start = (uint64_t) session->start; |
| 10660 | |
| 10661 | *p++ = (unsigned char)( ( start >> 56 ) & 0xFF ); |
| 10662 | *p++ = (unsigned char)( ( start >> 48 ) & 0xFF ); |
| 10663 | *p++ = (unsigned char)( ( start >> 40 ) & 0xFF ); |
| 10664 | *p++ = (unsigned char)( ( start >> 32 ) & 0xFF ); |
| 10665 | *p++ = (unsigned char)( ( start >> 24 ) & 0xFF ); |
| 10666 | *p++ = (unsigned char)( ( start >> 16 ) & 0xFF ); |
| 10667 | *p++ = (unsigned char)( ( start >> 8 ) & 0xFF ); |
| 10668 | *p++ = (unsigned char)( ( start ) & 0xFF ); |
| 10669 | } |
| 10670 | #endif /* MBEDTLS_HAVE_TIME */ |
| 10671 | |
| 10672 | /* |
| 10673 | * Basic mandatory fields |
| 10674 | */ |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10675 | { |
| 10676 | size_t const ciphersuite_len = 2; |
| 10677 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 10678 | size_t const compression_len = 1; |
| 10679 | #else |
| 10680 | size_t const compression_len = 0; |
| 10681 | #endif |
| 10682 | size_t const id_len_len = 1; |
| 10683 | size_t const id_len = 32; |
| 10684 | size_t const master_len = 48; |
| 10685 | size_t const verif_result_len = 4; |
| 10686 | |
| 10687 | size_t const basic_len = |
| 10688 | ciphersuite_len + |
| 10689 | compression_len + |
| 10690 | id_len_len + |
| 10691 | id_len + |
| 10692 | master_len + |
| 10693 | verif_result_len; |
| 10694 | |
| 10695 | used += basic_len; |
| 10696 | } |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10697 | |
| 10698 | if( used <= buf_len ) |
| 10699 | { |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10700 | const int ciphersuite = |
| 10701 | mbedtls_ssl_session_get_ciphersuite( session ); |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 10702 | p = mbedtls_platform_put_uint16_be( p, ciphersuite ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10703 | |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10704 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 10705 | *p++ = (unsigned char)( |
| 10706 | mbedtls_ssl_session_get_compression( session ) ); |
| 10707 | #endif |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10708 | |
| 10709 | *p++ = (unsigned char)( session->id_len & 0xFF ); |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 10710 | /* Not using more secure mbedtls_platform_memcpy as session id is public */ |
| 10711 | memcpy( p, session->id, 32 ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10712 | p += 32; |
| 10713 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10714 | mbedtls_platform_memcpy( p, session->master, 48 ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10715 | p += 48; |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 10716 | p = mbedtls_platform_put_uint32_be( p, session->verify_result ); |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10717 | } |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10718 | |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10719 | /* |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10720 | * Peer's end-entity certificate |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10721 | */ |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10722 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10723 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10724 | if( session->peer_cert == NULL ) |
| 10725 | cert_len = 0; |
| 10726 | else |
| 10727 | cert_len = session->peer_cert->raw.len; |
| 10728 | |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10729 | used += 3 + cert_len; |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10730 | |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10731 | if( used <= buf_len ) |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10732 | { |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 10733 | p = mbedtls_platform_put_uint24_be( p, cert_len ); |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10734 | |
| 10735 | if( session->peer_cert != NULL ) |
| 10736 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10737 | mbedtls_platform_memcpy( p, session->peer_cert->raw.p, cert_len ); |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10738 | p += cert_len; |
| 10739 | } |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10740 | } |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10741 | |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 10742 | #elif defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10743 | /* Digest of peer certificate */ |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10744 | if( session->peer_cert_digest != NULL ) |
| 10745 | { |
| 10746 | used += 1 /* type */ + 1 /* length */ + session->peer_cert_digest_len; |
| 10747 | if( used <= buf_len ) |
| 10748 | { |
| 10749 | *p++ = (unsigned char) session->peer_cert_digest_type; |
| 10750 | *p++ = (unsigned char) session->peer_cert_digest_len; |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10751 | mbedtls_platform_memcpy( p, session->peer_cert_digest, |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10752 | session->peer_cert_digest_len ); |
| 10753 | p += session->peer_cert_digest_len; |
| 10754 | } |
| 10755 | } |
| 10756 | else |
| 10757 | { |
| 10758 | used += 2; |
| 10759 | if( used <= buf_len ) |
| 10760 | { |
| 10761 | *p++ = (unsigned char) MBEDTLS_MD_NONE; |
| 10762 | *p++ = 0; |
| 10763 | } |
| 10764 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 10765 | #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && MBEDTLS_SSL_RENEGOTIATION */ |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10766 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
| 10767 | |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10768 | /* |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10769 | * Session ticket if any, plus associated data |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10770 | */ |
| 10771 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C) |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10772 | used += 3 + session->ticket_len + 4; /* len + ticket + lifetime */ |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10773 | |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10774 | if( used <= buf_len ) |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10775 | { |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 10776 | p = mbedtls_platform_put_uint24_be( p, session->ticket_len ); |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10777 | |
| 10778 | if( session->ticket != NULL ) |
| 10779 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10780 | mbedtls_platform_memcpy( p, session->ticket, session->ticket_len ); |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10781 | p += session->ticket_len; |
| 10782 | } |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10783 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 10784 | p = mbedtls_platform_put_uint32_be( p, session->ticket_lifetime ); |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10785 | } |
| 10786 | #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */ |
| 10787 | |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10788 | /* |
| 10789 | * Misc extension-related info |
| 10790 | */ |
| 10791 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
| 10792 | used += 1; |
| 10793 | |
| 10794 | if( used <= buf_len ) |
| 10795 | *p++ = session->mfl_code; |
| 10796 | #endif |
| 10797 | |
| 10798 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
| 10799 | used += 1; |
| 10800 | |
| 10801 | if( used <= buf_len ) |
| 10802 | *p++ = (unsigned char)( ( session->trunc_hmac ) & 0xFF ); |
| 10803 | #endif |
| 10804 | |
| 10805 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
| 10806 | used += 1; |
| 10807 | |
| 10808 | if( used <= buf_len ) |
| 10809 | *p++ = (unsigned char)( ( session->encrypt_then_mac ) & 0xFF ); |
| 10810 | #endif |
| 10811 | |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10812 | /* Done */ |
Manuel Pégourié-Gonnard | 32ce596 | 2019-05-21 11:01:32 +0200 | [diff] [blame] | 10813 | *olen = used; |
| 10814 | |
| 10815 | if( used > buf_len ) |
| 10816 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10817 | |
| 10818 | return( 0 ); |
| 10819 | } |
| 10820 | |
| 10821 | /* |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10822 | * Public wrapper for ssl_session_save() |
| 10823 | */ |
| 10824 | int mbedtls_ssl_session_save( const mbedtls_ssl_session *session, |
| 10825 | unsigned char *buf, |
| 10826 | size_t buf_len, |
| 10827 | size_t *olen ) |
| 10828 | { |
| 10829 | return( ssl_session_save( session, 0, buf, buf_len, olen ) ); |
| 10830 | } |
| 10831 | |
| 10832 | /* |
Manuel Pégourié-Gonnard | 8175816 | 2019-07-12 10:50:19 +0200 | [diff] [blame] | 10833 | * Deserialize session, see mbedtls_ssl_session_save() for format. |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 10834 | * |
| 10835 | * This internal version is wrapped by a public function that cleans up in |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10836 | * case of error, and has an extra option omit_header. |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10837 | */ |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 10838 | static int ssl_session_load( mbedtls_ssl_session *session, |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10839 | unsigned char omit_header, |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 10840 | const unsigned char *buf, |
| 10841 | size_t len ) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10842 | { |
| 10843 | const unsigned char *p = buf; |
| 10844 | const unsigned char * const end = buf + len; |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10845 | int ciphersuite; |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10846 | #if defined(MBEDTLS_HAVE_TIME) |
| 10847 | uint64_t start; |
| 10848 | #endif |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10849 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10850 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10851 | size_t cert_len; |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10852 | #endif |
| 10853 | #endif |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10854 | |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10855 | if( !omit_header ) |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10856 | { |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10857 | /* |
| 10858 | * Check version identifier |
| 10859 | */ |
| 10860 | |
| 10861 | if( (size_t)( end - p ) < sizeof( ssl_serialized_session_header ) ) |
| 10862 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 10863 | |
Teppo Järvelin | 0efac53 | 2019-10-04 13:21:08 +0300 | [diff] [blame] | 10864 | // use regular memcmp as session header is public data |
Teppo Järvelin | 650343c | 2019-10-03 15:36:59 +0300 | [diff] [blame] | 10865 | if( memcmp( p, ssl_serialized_session_header, |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 10866 | sizeof( ssl_serialized_session_header ) ) != 0 ) |
| 10867 | { |
| 10868 | return( MBEDTLS_ERR_SSL_VERSION_MISMATCH ); |
| 10869 | } |
| 10870 | p += sizeof( ssl_serialized_session_header ); |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10871 | } |
Hanno Becker | b5352f0 | 2019-05-16 12:39:07 +0100 | [diff] [blame] | 10872 | |
| 10873 | /* |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10874 | * Time |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10875 | */ |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10876 | #if defined(MBEDTLS_HAVE_TIME) |
| 10877 | if( 8 > (size_t)( end - p ) ) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10878 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 10879 | |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10880 | start = ( (uint64_t) p[0] << 56 ) | |
| 10881 | ( (uint64_t) p[1] << 48 ) | |
| 10882 | ( (uint64_t) p[2] << 40 ) | |
| 10883 | ( (uint64_t) p[3] << 32 ) | |
| 10884 | ( (uint64_t) p[4] << 24 ) | |
| 10885 | ( (uint64_t) p[5] << 16 ) | |
| 10886 | ( (uint64_t) p[6] << 8 ) | |
| 10887 | ( (uint64_t) p[7] ); |
| 10888 | p += 8; |
| 10889 | |
| 10890 | session->start = (time_t) start; |
| 10891 | #endif /* MBEDTLS_HAVE_TIME */ |
| 10892 | |
| 10893 | /* |
| 10894 | * Basic mandatory fields |
| 10895 | */ |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10896 | { |
| 10897 | size_t const ciphersuite_len = 2; |
| 10898 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 10899 | size_t const compression_len = 1; |
| 10900 | #else |
| 10901 | size_t const compression_len = 0; |
| 10902 | #endif |
| 10903 | size_t const id_len_len = 1; |
| 10904 | size_t const id_len = 32; |
| 10905 | size_t const master_len = 48; |
| 10906 | size_t const verif_result_len = 4; |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10907 | |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10908 | size_t const basic_len = |
| 10909 | ciphersuite_len + |
| 10910 | compression_len + |
| 10911 | id_len_len + |
| 10912 | id_len + |
| 10913 | master_len + |
| 10914 | verif_result_len; |
| 10915 | |
| 10916 | if( basic_len > (size_t)( end - p ) ) |
| 10917 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 10918 | } |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10919 | |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 10920 | ciphersuite = (int)mbedtls_platform_get_uint16_be( p ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10921 | p += 2; |
| 10922 | |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 10923 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE) |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10924 | session->ciphersuite = ciphersuite; |
| 10925 | #else |
| 10926 | if( ciphersuite != |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 10927 | MBEDTLS_SSL_SUITE_ID( MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE ) ) |
Hanno Becker | e02758c | 2019-06-26 15:31:31 +0100 | [diff] [blame] | 10928 | { |
| 10929 | return( MBEDTLS_ERR_SSL_VERSION_MISMATCH ); |
| 10930 | } |
| 10931 | #endif |
| 10932 | |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10933 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10934 | session->compression = *p++; |
Hanno Becker | 8844055 | 2019-07-03 14:16:13 +0100 | [diff] [blame] | 10935 | #endif |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10936 | |
| 10937 | session->id_len = *p++; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 10938 | /* Not using more secure mbedtls_platform_memcpy as session id is public */ |
| 10939 | memcpy( session->id, p, 32 ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10940 | p += 32; |
| 10941 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 10942 | mbedtls_platform_memcpy( session->master, p, 48 ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10943 | p += 48; |
| 10944 | |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 10945 | session->verify_result = (uint32_t)mbedtls_platform_get_uint32_be( p ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 10946 | p += 4; |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10947 | |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 10948 | /* Immediately clear invalid pointer values that have been read, in case |
| 10949 | * we exit early before we replaced them with valid ones. */ |
| 10950 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10951 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 10952 | session->peer_cert = NULL; |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 10953 | #elif defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 10954 | session->peer_cert_digest = NULL; |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 10955 | #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && MBEDTLS_SSL_RENEGOTIATION */ |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 10956 | #endif |
| 10957 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C) |
| 10958 | session->ticket = NULL; |
| 10959 | #endif |
| 10960 | |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 10961 | /* |
| 10962 | * Peer certificate |
| 10963 | */ |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10964 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | 2e6d347 | 2019-02-06 15:40:27 +0000 | [diff] [blame] | 10965 | #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10966 | if( 3 > (size_t)( end - p ) ) |
| 10967 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 10968 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 10969 | cert_len = mbedtls_platform_get_uint24_be( &p[0] ); |
| 10970 | |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 10971 | p += 3; |
| 10972 | |
| 10973 | if( cert_len == 0 ) |
| 10974 | { |
| 10975 | session->peer_cert = NULL; |
| 10976 | } |
| 10977 | else |
| 10978 | { |
| 10979 | int ret; |
| 10980 | |
| 10981 | if( cert_len > (size_t)( end - p ) ) |
| 10982 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 10983 | |
| 10984 | session->peer_cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ); |
| 10985 | |
| 10986 | if( session->peer_cert == NULL ) |
| 10987 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
| 10988 | |
| 10989 | mbedtls_x509_crt_init( session->peer_cert ); |
| 10990 | |
| 10991 | if( ( ret = mbedtls_x509_crt_parse_der( session->peer_cert, |
| 10992 | p, cert_len ) ) != 0 ) |
| 10993 | { |
| 10994 | mbedtls_x509_crt_free( session->peer_cert ); |
| 10995 | mbedtls_free( session->peer_cert ); |
| 10996 | session->peer_cert = NULL; |
| 10997 | return( ret ); |
| 10998 | } |
| 10999 | |
| 11000 | p += cert_len; |
| 11001 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 11002 | #elif defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 11003 | /* Deserialize CRT digest from the end of the ticket. */ |
| 11004 | if( 2 > (size_t)( end - p ) ) |
| 11005 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11006 | |
| 11007 | session->peer_cert_digest_type = (mbedtls_md_type_t) *p++; |
| 11008 | session->peer_cert_digest_len = (size_t) *p++; |
| 11009 | |
| 11010 | if( session->peer_cert_digest_len != 0 ) |
| 11011 | { |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 11012 | mbedtls_md_handle_t md_info = |
Hanno Becker | 2326d20 | 2019-06-06 14:54:55 +0100 | [diff] [blame] | 11013 | mbedtls_md_info_from_type( session->peer_cert_digest_type ); |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 11014 | if( md_info == MBEDTLS_MD_INVALID_HANDLE ) |
Hanno Becker | 2326d20 | 2019-06-06 14:54:55 +0100 | [diff] [blame] | 11015 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11016 | if( session->peer_cert_digest_len != mbedtls_md_get_size( md_info ) ) |
| 11017 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11018 | |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 11019 | if( session->peer_cert_digest_len > (size_t)( end - p ) ) |
| 11020 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11021 | |
| 11022 | session->peer_cert_digest = |
| 11023 | mbedtls_calloc( 1, session->peer_cert_digest_len ); |
| 11024 | if( session->peer_cert_digest == NULL ) |
| 11025 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
| 11026 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 11027 | mbedtls_platform_memcpy( session->peer_cert_digest, p, |
Hanno Becker | 4a2f8e5 | 2019-02-06 15:23:38 +0000 | [diff] [blame] | 11028 | session->peer_cert_digest_len ); |
| 11029 | p += session->peer_cert_digest_len; |
| 11030 | } |
Hanno Becker | 5882dd0 | 2019-06-06 16:25:57 +0100 | [diff] [blame] | 11031 | #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && MBEDTLS_SSL_RENEGOTIATION */ |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 11032 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
| 11033 | |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 11034 | /* |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 11035 | * Session ticket and associated data |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 11036 | */ |
| 11037 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C) |
| 11038 | if( 3 > (size_t)( end - p ) ) |
| 11039 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11040 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 11041 | session->ticket_len = mbedtls_platform_get_uint24_be( &p[0] ); |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 11042 | p += 3; |
| 11043 | |
| 11044 | if( session->ticket_len != 0 ) |
| 11045 | { |
| 11046 | if( session->ticket_len > (size_t)( end - p ) ) |
| 11047 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11048 | |
| 11049 | session->ticket = mbedtls_calloc( 1, session->ticket_len ); |
| 11050 | if( session->ticket == NULL ) |
| 11051 | return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); |
| 11052 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 11053 | mbedtls_platform_memcpy( session->ticket, p, session->ticket_len ); |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 11054 | p += session->ticket_len; |
| 11055 | } |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 11056 | |
| 11057 | if( 4 > (size_t)( end - p ) ) |
| 11058 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11059 | |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 11060 | session->ticket_lifetime = (uint32_t)mbedtls_platform_get_uint32_be( p ); |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 11061 | p += 4; |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 11062 | #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */ |
| 11063 | |
Manuel Pégourié-Gonnard | 60a4299 | 2019-05-24 12:06:29 +0200 | [diff] [blame] | 11064 | /* |
| 11065 | * Misc extension-related info |
| 11066 | */ |
| 11067 | #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
| 11068 | if( 1 > (size_t)( end - p ) ) |
| 11069 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11070 | |
| 11071 | session->mfl_code = *p++; |
| 11072 | #endif |
| 11073 | |
| 11074 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
| 11075 | if( 1 > (size_t)( end - p ) ) |
| 11076 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11077 | |
| 11078 | session->trunc_hmac = *p++; |
| 11079 | #endif |
| 11080 | |
| 11081 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
| 11082 | if( 1 > (size_t)( end - p ) ) |
| 11083 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11084 | |
| 11085 | session->encrypt_then_mac = *p++; |
| 11086 | #endif |
| 11087 | |
Manuel Pégourié-Gonnard | ef4ae61 | 2019-05-16 11:11:08 +0200 | [diff] [blame] | 11088 | /* Done, should have consumed entire buffer */ |
Manuel Pégourié-Gonnard | 91f4ca2 | 2019-05-16 10:08:35 +0200 | [diff] [blame] | 11089 | if( p != end ) |
| 11090 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11091 | |
| 11092 | return( 0 ); |
| 11093 | } |
| 11094 | |
| 11095 | /* |
Manuel Pégourié-Gonnard | 8175816 | 2019-07-12 10:50:19 +0200 | [diff] [blame] | 11096 | * Deserialize session: public wrapper for error cleaning |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 11097 | */ |
| 11098 | int mbedtls_ssl_session_load( mbedtls_ssl_session *session, |
| 11099 | const unsigned char *buf, |
| 11100 | size_t len ) |
| 11101 | { |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 11102 | int ret = ssl_session_load( session, 0, buf, len ); |
Manuel Pégourié-Gonnard | 5709811 | 2019-05-23 12:28:45 +0200 | [diff] [blame] | 11103 | |
| 11104 | if( ret != 0 ) |
| 11105 | mbedtls_ssl_session_free( session ); |
| 11106 | |
| 11107 | return( ret ); |
| 11108 | } |
| 11109 | |
| 11110 | /* |
Paul Bakker | 1961b70 | 2013-01-25 14:49:24 +0100 | [diff] [blame] | 11111 | * Perform a single step of the SSL handshake |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11112 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11113 | int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11114 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11115 | int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11116 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 11117 | if( ssl == NULL || ssl->conf == NULL ) |
| 11118 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11119 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11120 | #if defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11121 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_CLIENT ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11122 | ret = mbedtls_ssl_handshake_client_step( ssl ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11123 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11124 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11125 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_SERVER ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11126 | ret = mbedtls_ssl_handshake_server_step( ssl ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11127 | #endif |
| 11128 | |
Hanno Becker | b82350b | 2019-07-26 07:24:05 +0100 | [diff] [blame] | 11129 | ssl_send_pending_fatal_alert( ssl ); |
Paul Bakker | 1961b70 | 2013-01-25 14:49:24 +0100 | [diff] [blame] | 11130 | return( ret ); |
| 11131 | } |
| 11132 | |
| 11133 | /* |
| 11134 | * Perform the SSL handshake |
| 11135 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11136 | int mbedtls_ssl_handshake( mbedtls_ssl_context *ssl ) |
Paul Bakker | 1961b70 | 2013-01-25 14:49:24 +0100 | [diff] [blame] | 11137 | { |
| 11138 | int ret = 0; |
| 11139 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 11140 | if( ssl == NULL || ssl->conf == NULL ) |
| 11141 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11142 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11143 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> handshake" ) ); |
Paul Bakker | 1961b70 | 2013-01-25 14:49:24 +0100 | [diff] [blame] | 11144 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11145 | while( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
Paul Bakker | 1961b70 | 2013-01-25 14:49:24 +0100 | [diff] [blame] | 11146 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11147 | ret = mbedtls_ssl_handshake_step( ssl ); |
Paul Bakker | 1961b70 | 2013-01-25 14:49:24 +0100 | [diff] [blame] | 11148 | |
| 11149 | if( ret != 0 ) |
| 11150 | break; |
| 11151 | } |
| 11152 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11153 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= handshake" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11154 | |
| 11155 | return( ret ); |
| 11156 | } |
| 11157 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11158 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| 11159 | #if defined(MBEDTLS_SSL_SRV_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11160 | /* |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11161 | * Write HelloRequest to request renegotiation on server |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11162 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11163 | static int ssl_write_hello_request( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11164 | { |
| 11165 | int ret; |
| 11166 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11167 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write hello request" ) ); |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11168 | |
| 11169 | ssl->out_msglen = 4; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11170 | ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; |
| 11171 | ssl->out_msg[0] = MBEDTLS_SSL_HS_HELLO_REQUEST; |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11172 | |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 11173 | if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11174 | { |
Manuel Pégourié-Gonnard | 31c1586 | 2017-09-13 09:38:11 +0200 | [diff] [blame] | 11175 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11176 | return( ret ); |
| 11177 | } |
| 11178 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11179 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write hello request" ) ); |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11180 | |
| 11181 | return( 0 ); |
| 11182 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11183 | #endif /* MBEDTLS_SSL_SRV_C */ |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11184 | |
| 11185 | /* |
| 11186 | * Actually renegotiate current connection, triggered by either: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11187 | * - any side: calling mbedtls_ssl_renegotiate(), |
| 11188 | * - client: receiving a HelloRequest during mbedtls_ssl_read(), |
| 11189 | * - server: receiving any handshake message on server during mbedtls_ssl_read() after |
Manuel Pégourié-Gonnard | 55e4ff2 | 2014-08-19 11:16:35 +0200 | [diff] [blame] | 11190 | * the initial handshake is completed. |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11191 | * If the handshake doesn't complete due to waiting for I/O, it will continue |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11192 | * during the next calls to mbedtls_ssl_renegotiate() or mbedtls_ssl_read() respectively. |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11193 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11194 | static int ssl_start_renegotiation( mbedtls_ssl_context *ssl ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11195 | { |
| 11196 | int ret; |
| 11197 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11198 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> renegotiate" ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11199 | |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11200 | if( ( ret = ssl_handshake_init( ssl ) ) != 0 ) |
| 11201 | return( ret ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11202 | |
Manuel Pégourié-Gonnard | 0557bd5 | 2014-08-19 19:18:39 +0200 | [diff] [blame] | 11203 | /* RFC 6347 4.2.2: "[...] the HelloRequest will have message_seq = 0 and |
| 11204 | * the ServerHello will have message_seq = 1" */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11205 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 11206 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11207 | ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING ) |
Manuel Pégourié-Gonnard | 0557bd5 | 2014-08-19 19:18:39 +0200 | [diff] [blame] | 11208 | { |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11209 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 11210 | MBEDTLS_SSL_IS_SERVER ) |
| 11211 | { |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 11212 | ssl->handshake->out_msg_seq = 1; |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11213 | } |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 11214 | else |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11215 | { |
Manuel Pégourié-Gonnard | 1aa586e | 2014-09-03 12:54:04 +0200 | [diff] [blame] | 11216 | ssl->handshake->in_msg_seq = 1; |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11217 | } |
Manuel Pégourié-Gonnard | 0557bd5 | 2014-08-19 19:18:39 +0200 | [diff] [blame] | 11218 | } |
| 11219 | #endif |
| 11220 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11221 | ssl->state = MBEDTLS_SSL_HELLO_REQUEST; |
| 11222 | ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11223 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11224 | if( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11225 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11226 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11227 | return( ret ); |
| 11228 | } |
| 11229 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11230 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= renegotiate" ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11231 | |
| 11232 | return( 0 ); |
| 11233 | } |
| 11234 | |
| 11235 | /* |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11236 | * Renegotiate current connection on client, |
| 11237 | * or request renegotiation on server |
| 11238 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11239 | int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11240 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11241 | int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE; |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11242 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 11243 | if( ssl == NULL || ssl->conf == NULL ) |
| 11244 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11245 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11246 | #if defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11247 | /* On server, just send the request */ |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11248 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == MBEDTLS_SSL_IS_SERVER ) |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11249 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11250 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
| 11251 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11252 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11253 | ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_PENDING; |
Manuel Pégourié-Gonnard | f07f421 | 2014-08-15 19:04:47 +0200 | [diff] [blame] | 11254 | |
| 11255 | /* Did we already try/start sending HelloRequest? */ |
| 11256 | if( ssl->out_left != 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11257 | return( mbedtls_ssl_flush_output( ssl ) ); |
Manuel Pégourié-Gonnard | f07f421 | 2014-08-15 19:04:47 +0200 | [diff] [blame] | 11258 | |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11259 | return( ssl_write_hello_request( ssl ) ); |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11260 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11261 | #endif /* MBEDTLS_SSL_SRV_C */ |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11262 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11263 | #if defined(MBEDTLS_SSL_CLI_C) |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11264 | /* |
| 11265 | * On client, either start the renegotiation process or, |
| 11266 | * if already in progress, continue the handshake |
| 11267 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11268 | if( ssl->renego_status != MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS ) |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11269 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11270 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
| 11271 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11272 | |
| 11273 | if( ( ret = ssl_start_renegotiation( ssl ) ) != 0 ) |
| 11274 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11275 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_start_renegotiation", ret ); |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11276 | return( ret ); |
| 11277 | } |
| 11278 | } |
| 11279 | else |
| 11280 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11281 | if( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11282 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11283 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret ); |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11284 | return( ret ); |
| 11285 | } |
| 11286 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11287 | #endif /* MBEDTLS_SSL_CLI_C */ |
Manuel Pégourié-Gonnard | 9c1e189 | 2013-10-30 16:41:21 +0100 | [diff] [blame] | 11288 | |
Paul Bakker | 37ce0ff | 2013-10-31 14:32:04 +0100 | [diff] [blame] | 11289 | return( ret ); |
Manuel Pégourié-Gonnard | 214eed3 | 2013-10-30 13:06:54 +0100 | [diff] [blame] | 11290 | } |
| 11291 | |
| 11292 | /* |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11293 | * Check record counters and renegotiate if they're above the limit. |
| 11294 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11295 | static int ssl_check_ctr_renegotiate( mbedtls_ssl_context *ssl ) |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11296 | { |
Andres AG | 2196c7f | 2016-12-15 17:01:16 +0000 | [diff] [blame] | 11297 | size_t ep_len = ssl_ep_len( ssl ); |
| 11298 | int in_ctr_cmp; |
| 11299 | int out_ctr_cmp; |
| 11300 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11301 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER || |
| 11302 | ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING || |
Manuel Pégourié-Gonnard | 18332c5 | 2019-07-29 12:17:52 +0200 | [diff] [blame] | 11303 | ! mbedtls_ssl_conf_is_renegotiation_enabled( ssl->conf ) ) |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11304 | { |
| 11305 | return( 0 ); |
| 11306 | } |
| 11307 | |
Teppo Järvelin | 0efac53 | 2019-10-04 13:21:08 +0300 | [diff] [blame] | 11308 | // use regular memcmp as counters are public data |
Teppo Järvelin | 650343c | 2019-10-03 15:36:59 +0300 | [diff] [blame] | 11309 | in_ctr_cmp = memcmp( ssl->in_ctr + ep_len, |
Andres AG | 2196c7f | 2016-12-15 17:01:16 +0000 | [diff] [blame] | 11310 | ssl->conf->renego_period + ep_len, 8 - ep_len ); |
Teppo Järvelin | 650343c | 2019-10-03 15:36:59 +0300 | [diff] [blame] | 11311 | out_ctr_cmp = memcmp( ssl->cur_out_ctr + ep_len, |
Andres AG | 2196c7f | 2016-12-15 17:01:16 +0000 | [diff] [blame] | 11312 | ssl->conf->renego_period + ep_len, 8 - ep_len ); |
| 11313 | |
| 11314 | if( in_ctr_cmp <= 0 && out_ctr_cmp <= 0 ) |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11315 | { |
| 11316 | return( 0 ); |
| 11317 | } |
| 11318 | |
Manuel Pégourié-Gonnard | cb0d212 | 2015-07-22 11:52:11 +0200 | [diff] [blame] | 11319 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "record counter limit reached: renegotiate" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11320 | return( mbedtls_ssl_renegotiate( ssl ) ); |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11321 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11322 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11323 | |
| 11324 | /* |
| 11325 | * Receive application data decrypted from the SSL layer |
| 11326 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11327 | int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11328 | { |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11329 | int ret; |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 11330 | size_t n; |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 11331 | volatile unsigned char *buf_dup = buf; |
| 11332 | volatile size_t len_dup = len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11333 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 11334 | if( ssl == NULL || ssl->conf == NULL ) |
| 11335 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11336 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11337 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> read" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11338 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11339 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 11340 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 11341 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11342 | if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 11343 | return( ret ); |
| 11344 | |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11345 | if( ssl->handshake != NULL && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11346 | ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING ) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11347 | { |
Manuel Pégourié-Gonnard | 87a346f | 2017-09-13 12:45:21 +0200 | [diff] [blame] | 11348 | if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11349 | return( ret ); |
| 11350 | } |
Manuel Pégourié-Gonnard | abf1624 | 2014-09-23 09:42:16 +0200 | [diff] [blame] | 11351 | } |
| 11352 | #endif |
| 11353 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11354 | /* |
| 11355 | * Check if renegotiation is necessary and/or handshake is |
| 11356 | * in process. If yes, perform/continue, and fall through |
| 11357 | * if an unexpected packet is received while the client |
| 11358 | * is waiting for the ServerHello. |
| 11359 | * |
| 11360 | * (There is no equivalent to the last condition on |
| 11361 | * the server-side as it is not treated as within |
| 11362 | * a handshake while waiting for the ClientHello |
| 11363 | * after a renegotiation request.) |
| 11364 | */ |
| 11365 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11366 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11367 | ret = ssl_check_ctr_renegotiate( ssl ); |
| 11368 | if( ret != MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO && |
| 11369 | ret != 0 ) |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11370 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11371 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_check_ctr_renegotiate", ret ); |
Manuel Pégourié-Gonnard | b445805 | 2014-11-04 21:04:22 +0100 | [diff] [blame] | 11372 | return( ret ); |
| 11373 | } |
| 11374 | #endif |
| 11375 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11376 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11377 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11378 | ret = mbedtls_ssl_handshake( ssl ); |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11379 | if( ret != MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO && |
| 11380 | ret != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11381 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11382 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11383 | return( ret ); |
| 11384 | } |
| 11385 | } |
| 11386 | |
Hanno Becker | e41158b | 2017-10-23 13:30:32 +0100 | [diff] [blame] | 11387 | /* Loop as long as no application data record is available */ |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 11388 | while( ssl->in_offt == NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11389 | { |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 11390 | /* Start timer if not already running */ |
Hanno Becker | 0ae6b24 | 2019-06-13 16:45:36 +0100 | [diff] [blame] | 11391 | if( mbedtls_ssl_get_get_timer( ssl ) != NULL && |
| 11392 | mbedtls_ssl_get_get_timer( ssl )( ssl->p_timer ) == -1 ) |
Manuel Pégourié-Gonnard | 545102e | 2015-05-13 17:28:43 +0200 | [diff] [blame] | 11393 | { |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 11394 | ssl_set_timer( ssl, |
| 11395 | mbedtls_ssl_conf_get_read_timeout( ssl->conf ) ); |
Manuel Pégourié-Gonnard | 545102e | 2015-05-13 17:28:43 +0200 | [diff] [blame] | 11396 | } |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 11397 | |
Hanno Becker | 327c93b | 2018-08-15 13:56:18 +0100 | [diff] [blame] | 11398 | if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11399 | { |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11400 | if( ret == MBEDTLS_ERR_SSL_CONN_EOF ) |
| 11401 | return( 0 ); |
Paul Bakker | 831a755 | 2011-05-18 13:32:51 +0000 | [diff] [blame] | 11402 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11403 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); |
| 11404 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11405 | } |
| 11406 | |
| 11407 | if( ssl->in_msglen == 0 && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11408 | ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11409 | { |
| 11410 | /* |
| 11411 | * OpenSSL sends empty messages to randomize the IV |
| 11412 | */ |
Hanno Becker | 327c93b | 2018-08-15 13:56:18 +0100 | [diff] [blame] | 11413 | if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11414 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11415 | if( ret == MBEDTLS_ERR_SSL_CONN_EOF ) |
Paul Bakker | 831a755 | 2011-05-18 13:32:51 +0000 | [diff] [blame] | 11416 | return( 0 ); |
| 11417 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11418 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11419 | return( ret ); |
| 11420 | } |
| 11421 | } |
| 11422 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11423 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11424 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11425 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "received handshake message" ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11426 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11427 | /* |
| 11428 | * - For client-side, expect SERVER_HELLO_REQUEST. |
| 11429 | * - For server-side, expect CLIENT_HELLO. |
| 11430 | * - Fail (TLS) or silently drop record (DTLS) in other cases. |
| 11431 | */ |
| 11432 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11433 | #if defined(MBEDTLS_SSL_CLI_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11434 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 11435 | MBEDTLS_SSL_IS_CLIENT && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11436 | ( ssl->in_msg[0] != MBEDTLS_SSL_HS_HELLO_REQUEST || |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11437 | ssl->in_hslen != mbedtls_ssl_hs_hdr_len( ssl ) ) ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11438 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11439 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake received (not HelloRequest)" ) ); |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11440 | |
| 11441 | /* With DTLS, drop the packet (probably from last handshake) */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11442 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 11443 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 11444 | { |
| 11445 | continue; |
| 11446 | } |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 11447 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11448 | #endif |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 11449 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 11450 | { |
| 11451 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
| 11452 | } |
| 11453 | #endif |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11454 | } |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11455 | #endif /* MBEDTLS_SSL_CLI_C */ |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11456 | |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11457 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11458 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 11459 | MBEDTLS_SSL_IS_SERVER && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11460 | ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_HELLO ) |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11461 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11462 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake received (not ClientHello)" ) ); |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11463 | |
| 11464 | /* With DTLS, drop the packet (probably from last handshake) */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11465 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 11466 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 11467 | { |
| 11468 | continue; |
| 11469 | } |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 11470 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | 990f9e4 | 2014-09-06 12:27:02 +0200 | [diff] [blame] | 11471 | #endif |
Manuel Pégourié-Gonnard | 889bbc7 | 2019-06-18 10:56:09 +0200 | [diff] [blame] | 11472 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 11473 | { |
| 11474 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
| 11475 | } |
| 11476 | #endif |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11477 | } |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11478 | #endif /* MBEDTLS_SSL_SRV_C */ |
| 11479 | |
Hanno Becker | 21df7f9 | 2017-10-17 11:03:26 +0100 | [diff] [blame] | 11480 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11481 | /* Determine whether renegotiation attempt should be accepted */ |
Hanno Becker | b4ff0aa | 2017-10-17 11:03:04 +0100 | [diff] [blame] | 11482 | if( ! ( ssl->conf->disable_renegotiation == MBEDTLS_SSL_RENEGOTIATION_DISABLED || |
| 11483 | ( ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION && |
Hanno Becker | b0b2b67 | 2019-06-12 16:58:10 +0100 | [diff] [blame] | 11484 | mbedtls_ssl_conf_get_allow_legacy_renegotiation( ssl->conf ) == |
Hanno Becker | b4ff0aa | 2017-10-17 11:03:04 +0100 | [diff] [blame] | 11485 | MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION ) ) ) |
| 11486 | { |
| 11487 | /* |
| 11488 | * Accept renegotiation request |
| 11489 | */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11490 | |
Hanno Becker | b4ff0aa | 2017-10-17 11:03:04 +0100 | [diff] [blame] | 11491 | /* DTLS clients need to know renego is server-initiated */ |
| 11492 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 11493 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) && |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11494 | mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 11495 | MBEDTLS_SSL_IS_CLIENT ) |
Hanno Becker | b4ff0aa | 2017-10-17 11:03:04 +0100 | [diff] [blame] | 11496 | { |
| 11497 | ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_PENDING; |
| 11498 | } |
| 11499 | #endif |
| 11500 | ret = ssl_start_renegotiation( ssl ); |
| 11501 | if( ret != MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO && |
| 11502 | ret != 0 ) |
| 11503 | { |
| 11504 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_start_renegotiation", ret ); |
| 11505 | return( ret ); |
| 11506 | } |
| 11507 | } |
| 11508 | else |
Hanno Becker | 21df7f9 | 2017-10-17 11:03:26 +0100 | [diff] [blame] | 11509 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11510 | { |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11511 | /* |
| 11512 | * Refuse renegotiation |
| 11513 | */ |
| 11514 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11515 | MBEDTLS_SSL_DEBUG_MSG( 3, ( "refusing renegotiation, sending alert" ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11516 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11517 | #if defined(MBEDTLS_SSL_PROTO_SSL3) |
Hanno Becker | 2881d80 | 2019-05-22 14:44:53 +0100 | [diff] [blame] | 11518 | if( mbedtls_ssl_get_minor_ver( ssl ) == MBEDTLS_SSL_MINOR_VERSION_0 ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11519 | { |
Gilles Peskine | 92e4426 | 2017-05-10 17:27:49 +0200 | [diff] [blame] | 11520 | /* SSLv3 does not have a "no_renegotiation" warning, so |
| 11521 | we send a fatal alert and abort the connection. */ |
| 11522 | mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL, |
| 11523 | MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE ); |
| 11524 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
Paul Bakker | d0f6fa7 | 2012-09-17 09:18:12 +0000 | [diff] [blame] | 11525 | } |
| 11526 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11527 | #endif /* MBEDTLS_SSL_PROTO_SSL3 */ |
| 11528 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 11529 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 11530 | if( mbedtls_ssl_ver_geq( |
| 11531 | mbedtls_ssl_get_minor_ver( ssl ), |
| 11532 | MBEDTLS_SSL_MINOR_VERSION_1 ) ) |
Paul Bakker | d0f6fa7 | 2012-09-17 09:18:12 +0000 | [diff] [blame] | 11533 | { |
Hanno Becker | 2e8d133 | 2019-07-25 10:27:36 +0100 | [diff] [blame] | 11534 | ret = mbedtls_ssl_send_alert_message( ssl, |
| 11535 | MBEDTLS_SSL_ALERT_LEVEL_WARNING, |
| 11536 | MBEDTLS_SSL_ALERT_MSG_NO_RENEGOTIATION ); |
| 11537 | if( ret != 0 ) |
| 11538 | return( ret ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11539 | } |
Paul Bakker | d2f068e | 2013-08-27 21:19:20 +0200 | [diff] [blame] | 11540 | else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11541 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || |
| 11542 | MBEDTLS_SSL_PROTO_TLS1_2 */ |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 11543 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11544 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); |
| 11545 | return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); |
Paul Bakker | 577e006 | 2013-08-28 11:57:20 +0200 | [diff] [blame] | 11546 | } |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11547 | } |
Manuel Pégourié-Gonnard | f26a1e8 | 2014-08-19 12:28:50 +0200 | [diff] [blame] | 11548 | |
Hanno Becker | 90333da | 2017-10-10 11:27:13 +0100 | [diff] [blame] | 11549 | /* At this point, we don't know whether the renegotiation has been |
| 11550 | * completed or not. The cases to consider are the following: |
| 11551 | * 1) The renegotiation is complete. In this case, no new record |
| 11552 | * has been read yet. |
| 11553 | * 2) The renegotiation is incomplete because the client received |
| 11554 | * an application data record while awaiting the ServerHello. |
| 11555 | * 3) The renegotiation is incomplete because the client received |
| 11556 | * a non-handshake, non-application data message while awaiting |
| 11557 | * the ServerHello. |
| 11558 | * In each of these case, looping will be the proper action: |
| 11559 | * - For 1), the next iteration will read a new record and check |
| 11560 | * if it's application data. |
| 11561 | * - For 2), the loop condition isn't satisfied as application data |
| 11562 | * is present, hence continue is the same as break |
| 11563 | * - For 3), the loop condition is satisfied and read_record |
| 11564 | * will re-deliver the message that was held back by the client |
| 11565 | * when expecting the ServerHello. |
| 11566 | */ |
| 11567 | continue; |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11568 | } |
Hanno Becker | 21df7f9 | 2017-10-17 11:03:26 +0100 | [diff] [blame] | 11569 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11570 | else if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING ) |
Manuel Pégourié-Gonnard | 6d8404d | 2013-10-30 16:41:45 +0100 | [diff] [blame] | 11571 | { |
Manuel Pégourié-Gonnard | 7ca4e4d | 2015-05-04 10:55:58 +0200 | [diff] [blame] | 11572 | if( ssl->conf->renego_max_records >= 0 ) |
Manuel Pégourié-Gonnard | a9964db | 2014-07-03 19:29:16 +0200 | [diff] [blame] | 11573 | { |
Manuel Pégourié-Gonnard | 7ca4e4d | 2015-05-04 10:55:58 +0200 | [diff] [blame] | 11574 | if( ++ssl->renego_records_seen > ssl->conf->renego_max_records ) |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 11575 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11576 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "renegotiation requested, " |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 11577 | "but not honored by client" ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11578 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 11579 | } |
Manuel Pégourié-Gonnard | a9964db | 2014-07-03 19:29:16 +0200 | [diff] [blame] | 11580 | } |
Manuel Pégourié-Gonnard | 6d8404d | 2013-10-30 16:41:45 +0100 | [diff] [blame] | 11581 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11582 | #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
Manuel Pégourié-Gonnard | f26a1e8 | 2014-08-19 12:28:50 +0200 | [diff] [blame] | 11583 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11584 | /* Fatal and closure alerts handled by mbedtls_ssl_read_record() */ |
| 11585 | if( ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT ) |
Manuel Pégourié-Gonnard | f26a1e8 | 2014-08-19 12:28:50 +0200 | [diff] [blame] | 11586 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11587 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "ignoring non-fatal non-closure alert" ) ); |
Manuel Pégourié-Gonnard | 8836994 | 2015-05-06 16:19:31 +0100 | [diff] [blame] | 11588 | return( MBEDTLS_ERR_SSL_WANT_READ ); |
Manuel Pégourié-Gonnard | f26a1e8 | 2014-08-19 12:28:50 +0200 | [diff] [blame] | 11589 | } |
| 11590 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11591 | if( ssl->in_msgtype != MBEDTLS_SSL_MSG_APPLICATION_DATA ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11592 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11593 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad application data message" ) ); |
| 11594 | return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11595 | } |
| 11596 | |
| 11597 | ssl->in_offt = ssl->in_msg; |
Manuel Pégourié-Gonnard | 6b65141 | 2014-10-01 18:29:03 +0200 | [diff] [blame] | 11598 | |
Manuel Pégourié-Gonnard | ba958b8 | 2014-10-09 16:13:44 +0200 | [diff] [blame] | 11599 | /* We're going to return something now, cancel timer, |
| 11600 | * except if handshake (renegotiation) is in progress */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11601 | if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER ) |
Manuel Pégourié-Gonnard | ba958b8 | 2014-10-09 16:13:44 +0200 | [diff] [blame] | 11602 | ssl_set_timer( ssl, 0 ); |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11603 | |
Manuel Pégourié-Gonnard | 286a136 | 2015-05-13 16:22:05 +0200 | [diff] [blame] | 11604 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11605 | /* If we requested renego but received AppData, resend HelloRequest. |
| 11606 | * Do it now, after setting in_offt, to avoid taking this branch |
| 11607 | * again if ssl_write_hello_request() returns WANT_WRITE */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11608 | #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION) |
Hanno Becker | 2d9623f | 2019-06-13 12:07:05 +0100 | [diff] [blame] | 11609 | if( mbedtls_ssl_conf_get_endpoint( ssl->conf ) == |
| 11610 | MBEDTLS_SSL_IS_SERVER && |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11611 | ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING ) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11612 | { |
Manuel Pégourié-Gonnard | df3acd8 | 2014-10-15 15:07:45 +0200 | [diff] [blame] | 11613 | if( ( ret = ssl_resend_hello_request( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11614 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11615 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_resend_hello_request", ret ); |
Manuel Pégourié-Gonnard | 26a4cf6 | 2014-10-15 13:52:48 +0200 | [diff] [blame] | 11616 | return( ret ); |
| 11617 | } |
| 11618 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11619 | #endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_RENEGOTIATION */ |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11620 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11621 | } |
| 11622 | |
| 11623 | n = ( len < ssl->in_msglen ) |
| 11624 | ? len : ssl->in_msglen; |
| 11625 | |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 11626 | if( mbedtls_platform_memcpy( buf, ssl->in_offt, n ) != |
| 11627 | buf ) |
| 11628 | { |
| 11629 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 11630 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11631 | ssl->in_msglen -= n; |
| 11632 | |
Teppo Järvelin | cafb6c9 | 2020-01-08 09:19:07 +0200 | [diff] [blame] | 11633 | // clear incoming data after it's copied to buffer |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 11634 | if( mbedtls_platform_memset( ssl->in_offt, 0, n ) != |
| 11635 | ssl->in_offt ) |
| 11636 | { |
| 11637 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 11638 | } |
Teppo Järvelin | cafb6c9 | 2020-01-08 09:19:07 +0200 | [diff] [blame] | 11639 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11640 | if( ssl->in_msglen == 0 ) |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11641 | { |
| 11642 | /* all bytes consumed */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11643 | ssl->in_offt = NULL; |
Hanno Becker | bdf3905 | 2017-06-09 10:42:03 +0100 | [diff] [blame] | 11644 | ssl->keep_current_message = 0; |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11645 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11646 | else |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11647 | { |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11648 | /* more data available */ |
| 11649 | ssl->in_offt += n; |
Hanno Becker | 4a810fb | 2017-05-24 16:27:30 +0100 | [diff] [blame] | 11650 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11651 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11652 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= read" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11653 | |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 11654 | /* Secure against buffer substitution */ |
| 11655 | if( buf_dup == buf && len_dup == len ) |
| 11656 | { |
| 11657 | return( (int) n ); |
| 11658 | } |
| 11659 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11660 | } |
| 11661 | |
| 11662 | /* |
Andres Amaya Garcia | 5b92352 | 2017-09-28 14:41:17 +0100 | [diff] [blame] | 11663 | * Send application data to be encrypted by the SSL layer, taking care of max |
| 11664 | * fragment length and buffer size. |
| 11665 | * |
| 11666 | * According to RFC 5246 Section 6.2.1: |
| 11667 | * |
| 11668 | * Zero-length fragments of Application data MAY be sent as they are |
| 11669 | * potentially useful as a traffic analysis countermeasure. |
| 11670 | * |
| 11671 | * Therefore, it is possible that the input message length is 0 and the |
| 11672 | * corresponding return code is 0 on success. |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11673 | */ |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11674 | static int ssl_write_real( mbedtls_ssl_context *ssl, |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11675 | const unsigned char *buf, size_t len ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11676 | { |
Manuel Pégourié-Gonnard | 9468ff1 | 2017-09-21 13:49:50 +0200 | [diff] [blame] | 11677 | int ret = mbedtls_ssl_get_max_out_record_payload( ssl ); |
| 11678 | const size_t max_len = (size_t) ret; |
| 11679 | |
| 11680 | if( ret < 0 ) |
| 11681 | { |
| 11682 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_get_max_out_record_payload", ret ); |
| 11683 | return( ret ); |
| 11684 | } |
| 11685 | |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11686 | if( len > max_len ) |
| 11687 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11688 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 11689 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( ssl->conf->transport ) ) |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11690 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11691 | MBEDTLS_SSL_DEBUG_MSG( 1, ( "fragment larger than the (negotiated) " |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11692 | "maximum fragment length: %d > %d", |
| 11693 | len, max_len ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11694 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11695 | } |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 11696 | MBEDTLS_SSL_TRANSPORT_ELSE |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11697 | #endif |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 11698 | #if defined(MBEDTLS_SSL_PROTO_TLS) |
| 11699 | { |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11700 | len = max_len; |
Manuel Pégourié-Gonnard | ff4bd9f | 2019-06-06 10:34:48 +0200 | [diff] [blame] | 11701 | } |
| 11702 | #endif |
Manuel Pégourié-Gonnard | 37e08e1 | 2014-10-13 17:55:52 +0200 | [diff] [blame] | 11703 | } |
Paul Bakker | 887bd50 | 2011-06-08 13:10:54 +0000 | [diff] [blame] | 11704 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11705 | if( ssl->out_left != 0 ) |
| 11706 | { |
Andres Amaya Garcia | 5b92352 | 2017-09-28 14:41:17 +0100 | [diff] [blame] | 11707 | /* |
| 11708 | * The user has previously tried to send the data and |
| 11709 | * MBEDTLS_ERR_SSL_WANT_WRITE or the message was only partially |
| 11710 | * written. In this case, we expect the high-level write function |
| 11711 | * (e.g. mbedtls_ssl_write()) to be called with the same parameters |
| 11712 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11713 | if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11714 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11715 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flush_output", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11716 | return( ret ); |
| 11717 | } |
| 11718 | } |
Paul Bakker | 887bd50 | 2011-06-08 13:10:54 +0000 | [diff] [blame] | 11719 | else |
Paul Bakker | 1fd00bf | 2011-03-14 20:50:15 +0000 | [diff] [blame] | 11720 | { |
Andres Amaya Garcia | 5b92352 | 2017-09-28 14:41:17 +0100 | [diff] [blame] | 11721 | /* |
| 11722 | * The user is trying to send a message the first time, so we need to |
| 11723 | * copy the data into the internal buffers and setup the data structure |
| 11724 | * to keep track of partial writes |
| 11725 | */ |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11726 | ssl->out_msglen = len; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11727 | ssl->out_msgtype = MBEDTLS_SSL_MSG_APPLICATION_DATA; |
Piotr Nowicki | 305a5ec | 2020-08-10 17:42:18 +0200 | [diff] [blame] | 11728 | if( mbedtls_platform_memcpy( ssl->out_msg, buf, len ) != ssl->out_msg ) |
| 11729 | { |
| 11730 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
| 11731 | } |
Paul Bakker | 887bd50 | 2011-06-08 13:10:54 +0000 | [diff] [blame] | 11732 | |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11733 | #if defined(MBEDTLS_FI_COUNTERMEASURES) && !defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
Shelly Liberman | 3799fc1 | 2020-08-05 15:52:58 +0300 | [diff] [blame] | 11734 | /* |
| 11735 | * Buffer pointer and size duplication cannot be supported with MBEDTLS_SSL_CBC_RECORD_SPLITTING. |
| 11736 | * After splitting pointers and data size will not be the same as initaly provides by user. |
| 11737 | */ |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11738 | /* Secure against buffer substitution */ |
Shelly Liberman | 3799fc1 | 2020-08-05 15:52:58 +0300 | [diff] [blame] | 11739 | if( buf == ssl->out_msg_dup && |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11740 | ssl->out_msglen == ssl->out_msglen_dup && |
Shelly Liberman | c6a7e6b | 2020-08-05 15:26:10 +0300 | [diff] [blame] | 11741 | ssl->out_msg_dup[0] == ssl->out_msg[0] ) |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11742 | {/*write record only if data was copied from correct user pointer */ |
| 11743 | #endif |
Shelly Liberman | 3799fc1 | 2020-08-05 15:52:58 +0300 | [diff] [blame] | 11744 | if( ( ret = mbedtls_ssl_write_record( ssl, SSL_FORCE_FLUSH ) ) != 0 ) |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11745 | { |
Shelly Liberman | c6a7e6b | 2020-08-05 15:26:10 +0300 | [diff] [blame] | 11746 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); |
| 11747 | return( ret ); |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11748 | } |
| 11749 | |
| 11750 | #if defined(MBEDTLS_FI_COUNTERMEASURES) && !defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
Paul Bakker | 887bd50 | 2011-06-08 13:10:54 +0000 | [diff] [blame] | 11751 | } |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11752 | else |
| 11753 | { |
Shelly Liberman | c6a7e6b | 2020-08-05 15:26:10 +0300 | [diff] [blame] | 11754 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11755 | } |
| 11756 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11757 | } |
Shelly Liberman | c6a7e6b | 2020-08-05 15:26:10 +0300 | [diff] [blame] | 11758 | if ( ret == 0 ) |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 11759 | { |
Shelly Liberman | c6a7e6b | 2020-08-05 15:26:10 +0300 | [diff] [blame] | 11760 | return( (int) len ); |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 11761 | } |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11762 | else |
| 11763 | { |
Shelly Liberman | c6a7e6b | 2020-08-05 15:26:10 +0300 | [diff] [blame] | 11764 | return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED ); |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11765 | } |
| 11766 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11767 | } |
| 11768 | |
| 11769 | /* |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11770 | * Write application data, doing 1/n-1 splitting if necessary. |
| 11771 | * |
| 11772 | * With non-blocking I/O, ssl_write_real() may return WANT_WRITE, |
Manuel Pégourié-Gonnard | cfa477e | 2015-01-07 14:50:54 +0100 | [diff] [blame] | 11773 | * then the caller will call us again with the same arguments, so |
Hanno Becker | 2b187c4 | 2017-09-18 14:58:11 +0100 | [diff] [blame] | 11774 | * remember whether we already did the split or not. |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11775 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11776 | #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11777 | static int ssl_write_split( mbedtls_ssl_context *ssl, |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11778 | const unsigned char *buf, size_t len ) |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11779 | { |
| 11780 | int ret; |
| 11781 | |
Manuel Pégourié-Gonnard | 17eab2b | 2015-05-05 16:34:53 +0100 | [diff] [blame] | 11782 | if( ssl->conf->cbc_record_splitting == |
| 11783 | MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED || |
Manuel Pégourié-Gonnard | cfa477e | 2015-01-07 14:50:54 +0100 | [diff] [blame] | 11784 | len <= 1 || |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 11785 | mbedtls_ssl_ver_gt( |
| 11786 | mbedtls_ssl_get_minor_ver( ssl ), |
| 11787 | MBEDTLS_SSL_MINOR_VERSION_1 ) || |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 11788 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 11789 | mbedtls_cipher_get_cipher_mode( &ssl->transform_out->cipher_ctx ) |
| 11790 | != MBEDTLS_MODE_CBC ) |
| 11791 | #else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11792 | mbedtls_cipher_get_cipher_mode( &ssl->transform_out->cipher_ctx_enc ) |
| 11793 | != MBEDTLS_MODE_CBC ) |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 11794 | #endif |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11795 | { |
| 11796 | return( ssl_write_real( ssl, buf, len ) ); |
| 11797 | } |
| 11798 | |
| 11799 | if( ssl->split_done == 0 ) |
| 11800 | { |
Manuel Pégourié-Gonnard | a852cf4 | 2015-01-13 20:56:15 +0100 | [diff] [blame] | 11801 | if( ( ret = ssl_write_real( ssl, buf, 1 ) ) <= 0 ) |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11802 | return( ret ); |
Manuel Pégourié-Gonnard | a852cf4 | 2015-01-13 20:56:15 +0100 | [diff] [blame] | 11803 | ssl->split_done = 1; |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11804 | } |
| 11805 | |
Manuel Pégourié-Gonnard | a852cf4 | 2015-01-13 20:56:15 +0100 | [diff] [blame] | 11806 | if( ( ret = ssl_write_real( ssl, buf + 1, len - 1 ) ) <= 0 ) |
| 11807 | return( ret ); |
| 11808 | ssl->split_done = 0; |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11809 | |
| 11810 | return( ret + 1 ); |
| 11811 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11812 | #endif /* MBEDTLS_SSL_CBC_RECORD_SPLITTING */ |
Manuel Pégourié-Gonnard | d76314c | 2015-01-07 12:39:44 +0100 | [diff] [blame] | 11813 | |
| 11814 | /* |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11815 | * Write application data (public-facing wrapper) |
| 11816 | */ |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11817 | int mbedtls_ssl_write( mbedtls_ssl_context *ssl, const unsigned char *buf, size_t len ) |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11818 | { |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11819 | int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED; |
| 11820 | #if defined(MBEDTLS_FI_COUNTERMEASURES) && !defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
Shelly Liberman | 3799fc1 | 2020-08-05 15:52:58 +0300 | [diff] [blame] | 11821 | /* |
| 11822 | * Buffer pointer and size duplication cannot be supported with MBEDTLS_SSL_CBC_RECORD_SPLITTING. |
| 11823 | * After splitting pointers and data size will not be the same as initaly provides by user. |
| 11824 | */ |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 11825 | volatile const unsigned char *buf_dup = buf; |
| 11826 | volatile size_t len_dup = len; |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11827 | #endif |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11828 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write" ) ); |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11829 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 11830 | if( ssl == NULL || ssl->conf == NULL ) |
| 11831 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11832 | |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11833 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11834 | if( ( ret = ssl_check_ctr_renegotiate( ssl ) ) != 0 ) |
| 11835 | { |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11836 | MBEDTLS_SSL_DEBUG_RET( 1, "ssl_check_ctr_renegotiate", ret ); |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11837 | return( ret ); |
| 11838 | } |
| 11839 | #endif |
| 11840 | |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11841 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11842 | { |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11843 | if( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 ) |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11844 | { |
Manuel Pégourié-Gonnard | 151dc77 | 2015-05-14 13:55:51 +0200 | [diff] [blame] | 11845 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret ); |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11846 | return( ret ); |
| 11847 | } |
| 11848 | } |
| 11849 | |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11850 | #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11851 | ret = ssl_write_split( ssl, buf, len ); |
| 11852 | #else |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11853 | #if defined(MBEDTLS_FI_COUNTERMEASURES) |
Shelly Liberman | 3799fc1 | 2020-08-05 15:52:58 +0300 | [diff] [blame] | 11854 | /* Add const user pointers to context. We will be able to check its validity before copy to context */ |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11855 | ssl->out_msg_dup = (unsigned char*)buf_dup; |
| 11856 | ssl->out_msglen_dup = len_dup; |
| 11857 | #endif //MBEDTLS_FI_COUNTERMEASURES |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11858 | ret = ssl_write_real( ssl, buf, len ); |
| 11859 | #endif |
| 11860 | |
Manuel Pégourié-Gonnard | 144bc22 | 2015-04-17 20:39:07 +0200 | [diff] [blame] | 11861 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write" ) ); |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11862 | |
shelib01 | 4062d6c | 2020-07-21 11:54:52 +0300 | [diff] [blame] | 11863 | |
| 11864 | return( ret ); |
| 11865 | |
Manuel Pégourié-Gonnard | a2fce21 | 2015-04-15 19:09:03 +0200 | [diff] [blame] | 11866 | } |
| 11867 | |
| 11868 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11869 | * Notify the peer that the connection is being closed |
| 11870 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11871 | int mbedtls_ssl_close_notify( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11872 | { |
| 11873 | int ret; |
| 11874 | |
Manuel Pégourié-Gonnard | f81ee2e | 2015-09-01 17:43:40 +0200 | [diff] [blame] | 11875 | if( ssl == NULL || ssl->conf == NULL ) |
| 11876 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 11877 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11878 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write close notify" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11879 | |
Manuel Pégourié-Gonnard | a13500f | 2014-08-19 16:14:04 +0200 | [diff] [blame] | 11880 | if( ssl->out_left != 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11881 | return( mbedtls_ssl_flush_output( ssl ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11882 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11883 | if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11884 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11885 | if( ( ret = mbedtls_ssl_send_alert_message( ssl, |
| 11886 | MBEDTLS_SSL_ALERT_LEVEL_WARNING, |
| 11887 | MBEDTLS_SSL_ALERT_MSG_CLOSE_NOTIFY ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11888 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11889 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_send_alert_message", ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11890 | return( ret ); |
| 11891 | } |
| 11892 | } |
| 11893 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11894 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write close notify" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11895 | |
Manuel Pégourié-Gonnard | a13500f | 2014-08-19 16:14:04 +0200 | [diff] [blame] | 11896 | return( 0 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11897 | } |
| 11898 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11899 | void mbedtls_ssl_transform_free( mbedtls_ssl_transform *transform ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11900 | { |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 11901 | if( transform == NULL ) |
| 11902 | return; |
| 11903 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11904 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11905 | deflateEnd( &transform->ctx_deflate ); |
| 11906 | inflateEnd( &transform->ctx_inflate ); |
| 11907 | #endif |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 11908 | #if defined(MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS) |
| 11909 | mbedtls_cipher_free( &transform->cipher_ctx ); |
| 11910 | if( transform->key_dec != NULL ) |
| 11911 | mbedtls_free( transform->key_dec ); |
| 11912 | if( transform->key_enc != NULL ) |
| 11913 | mbedtls_free( transform->key_enc ); |
| 11914 | #else |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11915 | mbedtls_cipher_free( &transform->cipher_ctx_enc ); |
| 11916 | mbedtls_cipher_free( &transform->cipher_ctx_dec ); |
Andrzej Kurek | 1175044 | 2020-09-17 07:12:06 -0400 | [diff] [blame] | 11917 | #endif |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 11918 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11919 | mbedtls_md_free( &transform->md_ctx_enc ); |
| 11920 | mbedtls_md_free( &transform->md_ctx_dec ); |
Hanno Becker | 9223132 | 2018-01-03 15:32:51 +0000 | [diff] [blame] | 11921 | #endif |
Paul Bakker | 61d113b | 2013-07-04 11:51:43 +0200 | [diff] [blame] | 11922 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 11923 | mbedtls_platform_zeroize( transform, sizeof( mbedtls_ssl_transform ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11924 | } |
| 11925 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11926 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 11927 | static void ssl_key_cert_free( mbedtls_ssl_key_cert *key_cert ) |
Manuel Pégourié-Gonnard | 705fcca | 2013-09-23 20:04:20 +0200 | [diff] [blame] | 11928 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11929 | mbedtls_ssl_key_cert *cur = key_cert, *next; |
Manuel Pégourié-Gonnard | 705fcca | 2013-09-23 20:04:20 +0200 | [diff] [blame] | 11930 | |
| 11931 | while( cur != NULL ) |
| 11932 | { |
| 11933 | next = cur->next; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11934 | mbedtls_free( cur ); |
Manuel Pégourié-Gonnard | 705fcca | 2013-09-23 20:04:20 +0200 | [diff] [blame] | 11935 | cur = next; |
| 11936 | } |
| 11937 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11938 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
Manuel Pégourié-Gonnard | 705fcca | 2013-09-23 20:04:20 +0200 | [diff] [blame] | 11939 | |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 11940 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 11941 | |
| 11942 | static void ssl_buffering_free( mbedtls_ssl_context *ssl ) |
| 11943 | { |
| 11944 | unsigned offset; |
| 11945 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
| 11946 | |
| 11947 | if( hs == NULL ) |
| 11948 | return; |
| 11949 | |
Hanno Becker | 283f5ef | 2018-08-24 09:34:47 +0100 | [diff] [blame] | 11950 | ssl_free_buffered_record( ssl ); |
| 11951 | |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 11952 | for( offset = 0; offset < MBEDTLS_SSL_MAX_BUFFERED_HS; offset++ ) |
Hanno Becker | e605b19 | 2018-08-21 15:59:07 +0100 | [diff] [blame] | 11953 | ssl_buffering_free_slot( ssl, offset ); |
| 11954 | } |
| 11955 | |
| 11956 | static void ssl_buffering_free_slot( mbedtls_ssl_context *ssl, |
| 11957 | uint8_t slot ) |
| 11958 | { |
| 11959 | mbedtls_ssl_handshake_params * const hs = ssl->handshake; |
| 11960 | mbedtls_ssl_hs_buffer * const hs_buf = &hs->buffering.hs[slot]; |
Hanno Becker | b309b92 | 2018-08-23 13:18:05 +0100 | [diff] [blame] | 11961 | |
| 11962 | if( slot >= MBEDTLS_SSL_MAX_BUFFERED_HS ) |
| 11963 | return; |
| 11964 | |
Hanno Becker | e605b19 | 2018-08-21 15:59:07 +0100 | [diff] [blame] | 11965 | if( hs_buf->is_valid == 1 ) |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 11966 | { |
Hanno Becker | e605b19 | 2018-08-21 15:59:07 +0100 | [diff] [blame] | 11967 | hs->buffering.total_bytes_buffered -= hs_buf->data_len; |
Hanno Becker | 805f2e1 | 2018-10-12 16:31:41 +0100 | [diff] [blame] | 11968 | mbedtls_platform_zeroize( hs_buf->data, hs_buf->data_len ); |
Hanno Becker | e605b19 | 2018-08-21 15:59:07 +0100 | [diff] [blame] | 11969 | mbedtls_free( hs_buf->data ); |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 11970 | mbedtls_platform_memset( hs_buf, 0, sizeof( mbedtls_ssl_hs_buffer ) ); |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 11971 | } |
| 11972 | } |
| 11973 | |
| 11974 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 11975 | |
Gilles Peskine | 9b562d5 | 2018-04-25 20:32:43 +0200 | [diff] [blame] | 11976 | void mbedtls_ssl_handshake_free( mbedtls_ssl_context *ssl ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 11977 | { |
Gilles Peskine | 9b562d5 | 2018-04-25 20:32:43 +0200 | [diff] [blame] | 11978 | mbedtls_ssl_handshake_params *handshake = ssl->handshake; |
| 11979 | |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 11980 | if( handshake == NULL ) |
| 11981 | return; |
| 11982 | |
Gilles Peskine | df13d5c | 2018-04-25 20:39:48 +0200 | [diff] [blame] | 11983 | #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) |
| 11984 | if( ssl->conf->f_async_cancel != NULL && handshake->async_in_progress != 0 ) |
| 11985 | { |
Gilles Peskine | 8f97af7 | 2018-04-26 11:46:10 +0200 | [diff] [blame] | 11986 | ssl->conf->f_async_cancel( ssl ); |
Gilles Peskine | df13d5c | 2018-04-25 20:39:48 +0200 | [diff] [blame] | 11987 | handshake->async_in_progress = 0; |
| 11988 | } |
| 11989 | #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ |
| 11990 | |
Manuel Pégourié-Gonnard | b9d64e5 | 2015-07-06 14:18:56 +0200 | [diff] [blame] | 11991 | #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \ |
| 11992 | defined(MBEDTLS_SSL_PROTO_TLS1_1) |
| 11993 | mbedtls_md5_free( &handshake->fin_md5 ); |
| 11994 | mbedtls_sha1_free( &handshake->fin_sha1 ); |
| 11995 | #endif |
| 11996 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 11997 | #if defined(MBEDTLS_SHA256_C) |
| 11998 | mbedtls_sha256_free( &handshake->fin_sha256 ); |
| 11999 | #endif |
| 12000 | #if defined(MBEDTLS_SHA512_C) |
| 12001 | mbedtls_sha512_free( &handshake->fin_sha512 ); |
| 12002 | #endif |
| 12003 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 12004 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12005 | #if defined(MBEDTLS_DHM_C) |
| 12006 | mbedtls_dhm_free( &handshake->dhm_ctx ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12007 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12008 | #if defined(MBEDTLS_ECDH_C) |
| 12009 | mbedtls_ecdh_free( &handshake->ecdh_ctx ); |
Paul Bakker | 61d113b | 2013-07-04 11:51:43 +0200 | [diff] [blame] | 12010 | #endif |
Manuel Pégourié-Gonnard | eef142d | 2015-09-16 10:05:04 +0200 | [diff] [blame] | 12011 | #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) |
Manuel Pégourié-Gonnard | 76cfd3f | 2015-09-15 12:10:54 +0200 | [diff] [blame] | 12012 | mbedtls_ecjpake_free( &handshake->ecjpake_ctx ); |
Manuel Pégourié-Gonnard | 77c0646 | 2015-09-17 13:59:49 +0200 | [diff] [blame] | 12013 | #if defined(MBEDTLS_SSL_CLI_C) |
| 12014 | mbedtls_free( handshake->ecjpake_cache ); |
| 12015 | handshake->ecjpake_cache = NULL; |
| 12016 | handshake->ecjpake_cache_len = 0; |
| 12017 | #endif |
Manuel Pégourié-Gonnard | 76cfd3f | 2015-09-15 12:10:54 +0200 | [diff] [blame] | 12018 | #endif |
Paul Bakker | 61d113b | 2013-07-04 11:51:43 +0200 | [diff] [blame] | 12019 | |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 12020 | #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) |
| 12021 | if( handshake->psk != NULL ) |
| 12022 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 12023 | mbedtls_platform_zeroize( handshake->psk, handshake->psk_len ); |
Manuel Pégourié-Gonnard | 4b68296 | 2015-05-07 15:59:54 +0100 | [diff] [blame] | 12024 | mbedtls_free( handshake->psk ); |
| 12025 | } |
| 12026 | #endif |
| 12027 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12028 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && \ |
| 12029 | defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) |
Manuel Pégourié-Gonnard | 8372454 | 2013-09-24 22:30:56 +0200 | [diff] [blame] | 12030 | /* |
| 12031 | * Free only the linked list wrapper, not the keys themselves |
| 12032 | * since the belong to the SNI callback |
| 12033 | */ |
| 12034 | if( handshake->sni_key_cert != NULL ) |
| 12035 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12036 | mbedtls_ssl_key_cert *cur = handshake->sni_key_cert, *next; |
Manuel Pégourié-Gonnard | 8372454 | 2013-09-24 22:30:56 +0200 | [diff] [blame] | 12037 | |
| 12038 | while( cur != NULL ) |
| 12039 | { |
| 12040 | next = cur->next; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12041 | mbedtls_free( cur ); |
Manuel Pégourié-Gonnard | 8372454 | 2013-09-24 22:30:56 +0200 | [diff] [blame] | 12042 | cur = next; |
| 12043 | } |
| 12044 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12045 | #endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_SERVER_NAME_INDICATION */ |
Manuel Pégourié-Gonnard | 705fcca | 2013-09-23 20:04:20 +0200 | [diff] [blame] | 12046 | |
Manuel Pégourié-Gonnard | 862cde5 | 2017-05-17 11:56:15 +0200 | [diff] [blame] | 12047 | #if defined(MBEDTLS_SSL__ECP_RESTARTABLE) |
Manuel Pégourié-Gonnard | 6b7301c | 2017-08-15 12:08:45 +0200 | [diff] [blame] | 12048 | mbedtls_x509_crt_restart_free( &handshake->ecrs_ctx ); |
Hanno Becker | e4aeb76 | 2019-02-05 17:19:52 +0000 | [diff] [blame] | 12049 | if( handshake->ecrs_peer_cert != NULL ) |
| 12050 | { |
| 12051 | mbedtls_x509_crt_free( handshake->ecrs_peer_cert ); |
| 12052 | mbedtls_free( handshake->ecrs_peer_cert ); |
| 12053 | } |
Manuel Pégourié-Gonnard | 862cde5 | 2017-05-17 11:56:15 +0200 | [diff] [blame] | 12054 | #endif |
| 12055 | |
Hanno Becker | 3bf8cdf | 2019-02-06 16:18:31 +0000 | [diff] [blame] | 12056 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && \ |
| 12057 | !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE) |
| 12058 | mbedtls_pk_free( &handshake->peer_pubkey ); |
| 12059 | #endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */ |
| 12060 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12061 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 12062 | mbedtls_free( handshake->verify_cookie ); |
Manuel Pégourié-Gonnard | ffa67be | 2014-09-19 11:18:57 +0200 | [diff] [blame] | 12063 | ssl_flight_free( handshake->flight ); |
Hanno Becker | 0271f96 | 2018-08-16 13:23:47 +0100 | [diff] [blame] | 12064 | ssl_buffering_free( ssl ); |
Manuel Pégourié-Gonnard | 7484881 | 2014-07-11 02:43:49 +0200 | [diff] [blame] | 12065 | #endif |
| 12066 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 12067 | mbedtls_platform_zeroize( handshake, |
| 12068 | sizeof( mbedtls_ssl_handshake_params ) ); |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 12069 | |
| 12070 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 12071 | /* If the buffers are too big - reallocate. Because of the way Mbed TLS |
| 12072 | * processes datagrams and the fact that a datagram is allowed to have |
| 12073 | * several records in it, it is possible that the I/O buffers are not |
| 12074 | * empty at this stage */ |
Andrzej Kurek | cd9a6ff | 2020-10-22 11:12:07 +0200 | [diff] [blame] | 12075 | handle_buffer_resizing( ssl, BUFFER_DOWNSIZING, |
| 12076 | mbedtls_ssl_get_input_buflen( ssl ), |
| 12077 | mbedtls_ssl_get_output_buflen( ssl ) ); |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 12078 | #endif |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12079 | } |
| 12080 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12081 | void mbedtls_ssl_session_free( mbedtls_ssl_session *session ) |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12082 | { |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 12083 | if( session == NULL ) |
| 12084 | return; |
| 12085 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12086 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
Hanno Becker | 2214159 | 2019-02-05 12:38:15 +0000 | [diff] [blame] | 12087 | ssl_clear_peer_cert( session ); |
Paul Bakker | ed27a04 | 2013-04-18 22:46:23 +0200 | [diff] [blame] | 12088 | #endif |
Paul Bakker | 0a59707 | 2012-09-25 21:55:46 +0000 | [diff] [blame] | 12089 | |
Manuel Pégourié-Gonnard | b596abf | 2015-05-20 10:45:29 +0200 | [diff] [blame] | 12090 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12091 | mbedtls_free( session->ticket ); |
Paul Bakker | a503a63 | 2013-08-14 13:48:06 +0200 | [diff] [blame] | 12092 | #endif |
Manuel Pégourié-Gonnard | 75d4401 | 2013-08-02 14:44:04 +0200 | [diff] [blame] | 12093 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 12094 | mbedtls_platform_zeroize( session, sizeof( mbedtls_ssl_session ) ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12095 | } |
| 12096 | |
Manuel Pégourié-Gonnard | 4c1d06e | 2019-07-23 16:13:17 +0200 | [diff] [blame] | 12097 | #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) |
Manuel Pégourié-Gonnard | a7cd483 | 2019-07-23 16:31:16 +0200 | [diff] [blame] | 12098 | |
| 12099 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
| 12100 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_CONNECTION_ID 1u |
| 12101 | #else |
| 12102 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_CONNECTION_ID 0u |
| 12103 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
| 12104 | |
| 12105 | #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) |
| 12106 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_BADMAC_LIMIT 1u |
| 12107 | #else |
| 12108 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_BADMAC_LIMIT 0u |
| 12109 | #endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT */ |
| 12110 | |
| 12111 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
| 12112 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_ANTI_REPLAY 1u |
| 12113 | #else |
| 12114 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_ANTI_REPLAY 0u |
| 12115 | #endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */ |
| 12116 | |
| 12117 | #if defined(MBEDTLS_SSL_ALPN) |
| 12118 | #define SSL_SERIALIZED_CONTEXT_CONFIG_ALPN 1u |
| 12119 | #else |
| 12120 | #define SSL_SERIALIZED_CONTEXT_CONFIG_ALPN 0u |
| 12121 | #endif /* MBEDTLS_SSL_ALPN */ |
| 12122 | |
| 12123 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_CONNECTION_ID_BIT 0 |
| 12124 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_BADMAC_LIMIT_BIT 1 |
| 12125 | #define SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_ANTI_REPLAY_BIT 2 |
| 12126 | #define SSL_SERIALIZED_CONTEXT_CONFIG_ALPN_BIT 3 |
| 12127 | |
| 12128 | #define SSL_SERIALIZED_CONTEXT_CONFIG_BITFLAG \ |
| 12129 | ( (uint32_t) ( \ |
| 12130 | ( SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_CONNECTION_ID << SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_CONNECTION_ID_BIT ) | \ |
| 12131 | ( SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_BADMAC_LIMIT << SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_BADMAC_LIMIT_BIT ) | \ |
| 12132 | ( SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_ANTI_REPLAY << SSL_SERIALIZED_CONTEXT_CONFIG_DTLS_ANTI_REPLAY_BIT ) | \ |
| 12133 | ( SSL_SERIALIZED_CONTEXT_CONFIG_ALPN << SSL_SERIALIZED_CONTEXT_CONFIG_ALPN_BIT ) | \ |
| 12134 | 0u ) ) |
| 12135 | |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12136 | static unsigned char ssl_serialized_context_header[] = { |
| 12137 | MBEDTLS_VERSION_MAJOR, |
| 12138 | MBEDTLS_VERSION_MINOR, |
| 12139 | MBEDTLS_VERSION_PATCH, |
| 12140 | ( SSL_SERIALIZED_SESSION_CONFIG_BITFLAG >> 8 ) & 0xFF, |
| 12141 | ( SSL_SERIALIZED_SESSION_CONFIG_BITFLAG >> 0 ) & 0xFF, |
Manuel Pégourié-Gonnard | a7cd483 | 2019-07-23 16:31:16 +0200 | [diff] [blame] | 12142 | ( SSL_SERIALIZED_CONTEXT_CONFIG_BITFLAG >> 16 ) & 0xFF, |
| 12143 | ( SSL_SERIALIZED_CONTEXT_CONFIG_BITFLAG >> 8 ) & 0xFF, |
| 12144 | ( SSL_SERIALIZED_CONTEXT_CONFIG_BITFLAG >> 0 ) & 0xFF, |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12145 | }; |
| 12146 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12147 | /* |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12148 | * Serialize a full SSL context |
Manuel Pégourié-Gonnard | b6163ef | 2019-07-10 14:58:45 +0200 | [diff] [blame] | 12149 | * |
| 12150 | * The format of the serialized data is: |
| 12151 | * (in the presentation language of TLS, RFC 8446 section 3) |
| 12152 | * |
| 12153 | * // header |
| 12154 | * opaque mbedtls_version[3]; // major, minor, patch |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12155 | * opaque context_format[5]; // version-specific field determining |
Manuel Pégourié-Gonnard | b6163ef | 2019-07-10 14:58:45 +0200 | [diff] [blame] | 12156 | * // the format of the remaining |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12157 | * // serialized data. |
Manuel Pégourié-Gonnard | a7cd483 | 2019-07-23 16:31:16 +0200 | [diff] [blame] | 12158 | * Note: When updating the format, remember to keep these |
| 12159 | * version+format bytes. (We may make their size part of the API.) |
Manuel Pégourié-Gonnard | b6163ef | 2019-07-10 14:58:45 +0200 | [diff] [blame] | 12160 | * |
| 12161 | * // session sub-structure |
| 12162 | * opaque session<1..2^32-1>; // see mbedtls_ssl_session_save() |
| 12163 | * // transform sub-structure |
| 12164 | * uint8 random[64]; // ServerHello.random+ClientHello.random |
| 12165 | * uint8 in_cid<0..2^8-1> // Connection ID: expected incoming value |
| 12166 | * uint8 out_cid<0..2^8-1> // Connection ID: outgoing value to use |
| 12167 | * // fields from ssl_context |
| 12168 | * uint32 badmac_seen; // DTLS: number of records with failing MAC |
| 12169 | * uint64 in_window_top; // DTLS: last validated record seq_num |
| 12170 | * uint64 in_window; // DTLS: bitmask for replay protection |
| 12171 | * uint8 disable_datagram_packing; // DTLS: only one record per datagram |
| 12172 | * uint64 cur_out_ctr; // Record layer: outgoing sequence number |
| 12173 | * uint16 mtu; // DTLS: path mtu (max outgoing fragment size) |
| 12174 | * uint8 alpn_chosen<0..2^8-1> // ALPN: negotiated application protocol |
| 12175 | * |
| 12176 | * Note that many fields of the ssl_context or sub-structures are not |
| 12177 | * serialized, as they fall in one of the following categories: |
| 12178 | * |
| 12179 | * 1. forced value (eg in_left must be 0) |
| 12180 | * 2. pointer to dynamically-allocated memory (eg session, transform) |
| 12181 | * 3. value can be re-derived from other data (eg session keys from MS) |
| 12182 | * 4. value was temporary (eg content of input buffer) |
| 12183 | * 5. value will be provided by the user again (eg I/O callbacks and context) |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12184 | */ |
| 12185 | int mbedtls_ssl_context_save( mbedtls_ssl_context *ssl, |
| 12186 | unsigned char *buf, |
| 12187 | size_t buf_len, |
| 12188 | size_t *olen ) |
| 12189 | { |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12190 | unsigned char *p = buf; |
| 12191 | size_t used = 0; |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12192 | size_t session_len; |
| 12193 | int ret = 0; |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12194 | |
Manuel Pégourié-Gonnard | 569ed6b | 2019-07-10 14:14:05 +0200 | [diff] [blame] | 12195 | /* |
Manuel Pégourié-Gonnard | 69a3e41 | 2019-07-29 12:28:52 +0200 | [diff] [blame] | 12196 | * Enforce usage restrictions, see "return BAD_INPUT_DATA" in |
| 12197 | * this function's documentation. |
| 12198 | * |
| 12199 | * These are due to assumptions/limitations in the implementation. Some of |
| 12200 | * them are likely to stay (no handshake in progress) some might go away |
| 12201 | * (only DTLS) but are currently used to simplify the implementation. |
Manuel Pégourié-Gonnard | 569ed6b | 2019-07-10 14:14:05 +0200 | [diff] [blame] | 12202 | */ |
Manuel Pégourié-Gonnard | 69a3e41 | 2019-07-29 12:28:52 +0200 | [diff] [blame] | 12203 | /* The initial handshake must be over */ |
| 12204 | if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER ) |
Manuel Pégourié-Gonnard | 569ed6b | 2019-07-10 14:14:05 +0200 | [diff] [blame] | 12205 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | 69a3e41 | 2019-07-29 12:28:52 +0200 | [diff] [blame] | 12206 | if( ssl->handshake != NULL ) |
| 12207 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12208 | /* Double-check that sub-structures are indeed ready */ |
| 12209 | if( ssl->transform == NULL || ssl->session == NULL ) |
| 12210 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12211 | /* There must be no pending incoming or outgoing data */ |
| 12212 | if( mbedtls_ssl_check_pending( ssl ) != 0 ) |
| 12213 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12214 | if( ssl->out_left != 0 ) |
| 12215 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12216 | /* Protocol must be DLTS, not TLS */ |
| 12217 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) ) |
| 12218 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12219 | /* Version must be 1.2 */ |
| 12220 | if( mbedtls_ssl_get_major_ver( ssl ) != MBEDTLS_SSL_MAJOR_VERSION_3 ) |
| 12221 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12222 | if( mbedtls_ssl_get_minor_ver( ssl ) != MBEDTLS_SSL_MINOR_VERSION_3 ) |
| 12223 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12224 | /* We must be using an AEAD ciphersuite */ |
| 12225 | if( mbedtls_ssl_transform_uses_aead( ssl->transform ) != 1 ) |
| 12226 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12227 | /* Renegotiation must not be enabled */ |
| 12228 | if( mbedtls_ssl_conf_is_renegotiation_enabled( ssl->conf ) ) |
| 12229 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12230 | |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12231 | /* |
| 12232 | * Version and format identifier |
| 12233 | */ |
| 12234 | used += sizeof( ssl_serialized_context_header ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12235 | |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12236 | if( used <= buf_len ) |
| 12237 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 12238 | mbedtls_platform_memcpy( p, ssl_serialized_context_header, |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12239 | sizeof( ssl_serialized_context_header ) ); |
| 12240 | p += sizeof( ssl_serialized_context_header ); |
| 12241 | } |
| 12242 | |
| 12243 | /* |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12244 | * Session (length + data) |
| 12245 | */ |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 12246 | ret = ssl_session_save( ssl->session, 1, NULL, 0, &session_len ); |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12247 | if( ret != MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ) |
| 12248 | return( ret ); |
| 12249 | |
| 12250 | used += 4 + session_len; |
| 12251 | if( used <= buf_len ) |
| 12252 | { |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 12253 | p = mbedtls_platform_put_uint32_be( p, session_len ); |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12254 | |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 12255 | ret = ssl_session_save( ssl->session, 1, |
| 12256 | p, session_len, &session_len ); |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12257 | if( ret != 0 ) |
| 12258 | return( ret ); |
| 12259 | |
| 12260 | p += session_len; |
| 12261 | } |
| 12262 | |
| 12263 | /* |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12264 | * Transform |
| 12265 | */ |
| 12266 | used += sizeof( ssl->transform->randbytes ); |
| 12267 | if( used <= buf_len ) |
| 12268 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 12269 | mbedtls_platform_memcpy( p, ssl->transform->randbytes, |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12270 | sizeof( ssl->transform->randbytes ) ); |
| 12271 | p += sizeof( ssl->transform->randbytes ); |
| 12272 | } |
| 12273 | |
| 12274 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
| 12275 | used += 2 + ssl->transform->in_cid_len + ssl->transform->out_cid_len; |
| 12276 | if( used <= buf_len ) |
| 12277 | { |
| 12278 | *p++ = ssl->transform->in_cid_len; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 12279 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 12280 | memcpy( p, ssl->transform->in_cid, ssl->transform->in_cid_len ); |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12281 | p += ssl->transform->in_cid_len; |
| 12282 | |
| 12283 | *p++ = ssl->transform->out_cid_len; |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 12284 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 12285 | memcpy( p, ssl->transform->out_cid, ssl->transform->out_cid_len ); |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12286 | p += ssl->transform->out_cid_len; |
| 12287 | } |
| 12288 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
| 12289 | |
| 12290 | /* |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12291 | * Saved fields from top-level ssl_context structure |
| 12292 | */ |
| 12293 | #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) |
| 12294 | used += 4; |
| 12295 | if( used <= buf_len ) |
| 12296 | { |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 12297 | p = mbedtls_platform_put_uint32_be( p, ssl->badmac_seen ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12298 | } |
| 12299 | #endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT */ |
| 12300 | |
| 12301 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
| 12302 | used += 16; |
| 12303 | if( used <= buf_len ) |
| 12304 | { |
| 12305 | *p++ = (unsigned char)( ( ssl->in_window_top >> 56 ) & 0xFF ); |
| 12306 | *p++ = (unsigned char)( ( ssl->in_window_top >> 48 ) & 0xFF ); |
| 12307 | *p++ = (unsigned char)( ( ssl->in_window_top >> 40 ) & 0xFF ); |
| 12308 | *p++ = (unsigned char)( ( ssl->in_window_top >> 32 ) & 0xFF ); |
| 12309 | *p++ = (unsigned char)( ( ssl->in_window_top >> 24 ) & 0xFF ); |
| 12310 | *p++ = (unsigned char)( ( ssl->in_window_top >> 16 ) & 0xFF ); |
| 12311 | *p++ = (unsigned char)( ( ssl->in_window_top >> 8 ) & 0xFF ); |
| 12312 | *p++ = (unsigned char)( ( ssl->in_window_top ) & 0xFF ); |
| 12313 | |
| 12314 | *p++ = (unsigned char)( ( ssl->in_window >> 56 ) & 0xFF ); |
| 12315 | *p++ = (unsigned char)( ( ssl->in_window >> 48 ) & 0xFF ); |
| 12316 | *p++ = (unsigned char)( ( ssl->in_window >> 40 ) & 0xFF ); |
| 12317 | *p++ = (unsigned char)( ( ssl->in_window >> 32 ) & 0xFF ); |
| 12318 | *p++ = (unsigned char)( ( ssl->in_window >> 24 ) & 0xFF ); |
| 12319 | *p++ = (unsigned char)( ( ssl->in_window >> 16 ) & 0xFF ); |
| 12320 | *p++ = (unsigned char)( ( ssl->in_window >> 8 ) & 0xFF ); |
| 12321 | *p++ = (unsigned char)( ( ssl->in_window ) & 0xFF ); |
| 12322 | } |
| 12323 | #endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */ |
| 12324 | |
| 12325 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 12326 | used += 1; |
| 12327 | if( used <= buf_len ) |
| 12328 | { |
| 12329 | *p++ = ssl->disable_datagram_packing; |
| 12330 | } |
| 12331 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 12332 | |
| 12333 | used += 8; |
| 12334 | if( used <= buf_len ) |
| 12335 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 12336 | mbedtls_platform_memcpy( p, ssl->cur_out_ctr, 8 ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12337 | p += 8; |
| 12338 | } |
| 12339 | |
| 12340 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 12341 | used += 2; |
| 12342 | if( used <= buf_len ) |
| 12343 | { |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 12344 | p = mbedtls_platform_put_uint16_be( p, ssl->mtu ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12345 | } |
| 12346 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 12347 | |
| 12348 | #if defined(MBEDTLS_SSL_ALPN) |
| 12349 | { |
| 12350 | const uint8_t alpn_len = ssl->alpn_chosen |
Manuel Pégourié-Gonnard | 7af7375 | 2019-07-24 00:58:27 +0200 | [diff] [blame] | 12351 | ? (uint8_t) strlen( ssl->alpn_chosen ) |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12352 | : 0; |
| 12353 | |
| 12354 | used += 1 + alpn_len; |
| 12355 | if( used <= buf_len ) |
| 12356 | { |
| 12357 | *p++ = alpn_len; |
| 12358 | |
| 12359 | if( ssl->alpn_chosen != NULL ) |
| 12360 | { |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 12361 | mbedtls_platform_memcpy( p, ssl->alpn_chosen, alpn_len ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12362 | p += alpn_len; |
| 12363 | } |
| 12364 | } |
| 12365 | } |
| 12366 | #endif /* MBEDTLS_SSL_ALPN */ |
| 12367 | |
| 12368 | /* |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12369 | * Done |
| 12370 | */ |
| 12371 | *olen = used; |
| 12372 | |
| 12373 | if( used > buf_len ) |
| 12374 | return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12375 | |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12376 | MBEDTLS_SSL_DEBUG_BUF( 4, "saved context", buf, used ); |
| 12377 | |
Manuel Pégourié-Gonnard | bc847ca | 2019-07-23 14:51:09 +0200 | [diff] [blame] | 12378 | return( ssl_session_reset_int( ssl, 0 ) ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12379 | } |
| 12380 | |
| 12381 | /* |
Manuel Pégourié-Gonnard | 8175816 | 2019-07-12 10:50:19 +0200 | [diff] [blame] | 12382 | * Deserialize context, see mbedtls_ssl_context_save() for format. |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12383 | * |
| 12384 | * This internal version is wrapped by a public function that cleans up in |
| 12385 | * case of error. |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12386 | */ |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12387 | static int ssl_context_load( mbedtls_ssl_context *ssl, |
| 12388 | const unsigned char *buf, |
| 12389 | size_t len ) |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12390 | { |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12391 | const unsigned char *p = buf; |
| 12392 | const unsigned char * const end = buf + len; |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12393 | size_t session_len; |
| 12394 | int ret; |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12395 | |
Manuel Pégourié-Gonnard | 5e534ba | 2019-07-11 09:56:30 +0200 | [diff] [blame] | 12396 | /* |
| 12397 | * The context should have been freshly setup or reset. |
| 12398 | * Give the user an error in case of obvious misuse. |
Manuel Pégourié-Gonnard | 14e2a8a | 2019-07-26 16:31:53 +0200 | [diff] [blame] | 12399 | * (Checking session is useful because it won't be NULL if we're |
Manuel Pégourié-Gonnard | 5e534ba | 2019-07-11 09:56:30 +0200 | [diff] [blame] | 12400 | * renegotiating, or if the user mistakenly loaded a session first.) |
| 12401 | */ |
| 12402 | if( ssl->state != MBEDTLS_SSL_HELLO_REQUEST || |
| 12403 | ssl->session != NULL ) |
| 12404 | { |
| 12405 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12406 | } |
| 12407 | |
| 12408 | /* |
| 12409 | * We can't check that the config matches the initial one, but we can at |
| 12410 | * least check it matches the requirements for serializing. |
| 12411 | */ |
| 12412 | if( MBEDTLS_SSL_TRANSPORT_IS_TLS( ssl->conf->transport ) || |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 12413 | mbedtls_ssl_ver_lt( |
| 12414 | mbedtls_ssl_conf_get_max_major_ver( ssl->conf ), |
| 12415 | MBEDTLS_SSL_MAJOR_VERSION_3 ) || |
| 12416 | mbedtls_ssl_ver_gt( |
| 12417 | mbedtls_ssl_conf_get_min_major_ver( ssl->conf ), |
| 12418 | MBEDTLS_SSL_MAJOR_VERSION_3 ) || |
| 12419 | mbedtls_ssl_ver_lt( |
| 12420 | mbedtls_ssl_conf_get_max_minor_ver( ssl->conf ), |
| 12421 | MBEDTLS_SSL_MINOR_VERSION_3 ) || |
| 12422 | mbedtls_ssl_ver_gt( |
| 12423 | mbedtls_ssl_conf_get_min_minor_ver( ssl->conf ), |
| 12424 | MBEDTLS_SSL_MINOR_VERSION_3 ) || |
Manuel Pégourié-Gonnard | 18332c5 | 2019-07-29 12:17:52 +0200 | [diff] [blame] | 12425 | mbedtls_ssl_conf_is_renegotiation_enabled( ssl->conf ) ) |
Manuel Pégourié-Gonnard | 5e534ba | 2019-07-11 09:56:30 +0200 | [diff] [blame] | 12426 | { |
| 12427 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12428 | } |
| 12429 | |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12430 | MBEDTLS_SSL_DEBUG_BUF( 4, "context to load", buf, len ); |
| 12431 | |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12432 | /* |
| 12433 | * Check version identifier |
| 12434 | */ |
| 12435 | if( (size_t)( end - p ) < sizeof( ssl_serialized_context_header ) ) |
| 12436 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12437 | |
Teppo Järvelin | 650343c | 2019-10-03 15:36:59 +0300 | [diff] [blame] | 12438 | // use regular memcmp as header is not that critical |
| 12439 | if( memcmp( p, ssl_serialized_context_header, |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12440 | sizeof( ssl_serialized_context_header ) ) != 0 ) |
| 12441 | { |
| 12442 | return( MBEDTLS_ERR_SSL_VERSION_MISMATCH ); |
| 12443 | } |
| 12444 | p += sizeof( ssl_serialized_context_header ); |
| 12445 | |
| 12446 | /* |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12447 | * Session |
| 12448 | */ |
| 12449 | if( (size_t)( end - p ) < 4 ) |
| 12450 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12451 | |
Arto Kinnunen | 0b62ce8 | 2019-09-04 14:04:57 +0300 | [diff] [blame] | 12452 | session_len = mbedtls_platform_get_uint32_be( p ); |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12453 | p += 4; |
| 12454 | |
Manuel Pégourié-Gonnard | ff22200 | 2019-07-23 14:43:30 +0200 | [diff] [blame] | 12455 | /* This has been allocated by ssl_handshake_init(), called by |
| 12456 | * by either ssl_session_reset_int() or mbedtls_ssl_setup(). */ |
| 12457 | ssl->session = ssl->session_negotiate; |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12458 | ssl->session_in = ssl->session; |
| 12459 | ssl->session_out = ssl->session; |
Manuel Pégourié-Gonnard | ff22200 | 2019-07-23 14:43:30 +0200 | [diff] [blame] | 12460 | ssl->session_negotiate = NULL; |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12461 | |
| 12462 | if( (size_t)( end - p ) < session_len ) |
| 12463 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12464 | |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 12465 | ret = ssl_session_load( ssl->session, 1, p, session_len ); |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12466 | if( ret != 0 ) |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 12467 | { |
| 12468 | mbedtls_ssl_session_free( ssl->session ); |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12469 | return( ret ); |
Manuel Pégourié-Gonnard | 7ce9446 | 2019-07-23 16:52:45 +0200 | [diff] [blame] | 12470 | } |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12471 | |
| 12472 | p += session_len; |
| 12473 | |
| 12474 | /* |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12475 | * Transform |
| 12476 | */ |
| 12477 | |
Manuel Pégourié-Gonnard | ff22200 | 2019-07-23 14:43:30 +0200 | [diff] [blame] | 12478 | /* This has been allocated by ssl_handshake_init(), called by |
| 12479 | * by either ssl_session_reset_int() or mbedtls_ssl_setup(). */ |
| 12480 | ssl->transform = ssl->transform_negotiate; |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12481 | ssl->transform_in = ssl->transform; |
| 12482 | ssl->transform_out = ssl->transform; |
Manuel Pégourié-Gonnard | ff22200 | 2019-07-23 14:43:30 +0200 | [diff] [blame] | 12483 | ssl->transform_negotiate = NULL; |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12484 | |
| 12485 | /* Read random bytes and populate structure */ |
| 12486 | if( (size_t)( end - p ) < sizeof( ssl->transform->randbytes ) ) |
| 12487 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12488 | |
| 12489 | ret = ssl_populate_transform( ssl->transform, |
| 12490 | mbedtls_ssl_session_get_ciphersuite( ssl->session ), |
| 12491 | ssl->session->master, |
| 12492 | #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) |
| 12493 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
| 12494 | ssl->session->encrypt_then_mac, |
| 12495 | #endif |
| 12496 | #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) |
| 12497 | ssl->session->trunc_hmac, |
| 12498 | #endif |
| 12499 | #endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */ |
| 12500 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
| 12501 | ssl->session->compression, |
| 12502 | #endif |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12503 | p, /* currently pointing to randbytes */ |
| 12504 | MBEDTLS_SSL_MINOR_VERSION_3, /* (D)TLS 1.2 is forced */ |
| 12505 | mbedtls_ssl_conf_get_endpoint( ssl->conf ), |
| 12506 | ssl ); |
| 12507 | if( ret != 0 ) |
| 12508 | return( ret ); |
| 12509 | |
| 12510 | p += sizeof( ssl->transform->randbytes ); |
| 12511 | |
| 12512 | #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) |
| 12513 | /* Read connection IDs and store them */ |
| 12514 | if( (size_t)( end - p ) < 1 ) |
| 12515 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12516 | |
| 12517 | ssl->transform->in_cid_len = *p++; |
| 12518 | |
Manuel Pégourié-Gonnard | 2f3fa62 | 2019-07-23 15:02:54 +0200 | [diff] [blame] | 12519 | if( (size_t)( end - p ) < ssl->transform->in_cid_len + 1u ) |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12520 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12521 | |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 12522 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 12523 | memcpy( ssl->transform->in_cid, p, ssl->transform->in_cid_len ); |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12524 | p += ssl->transform->in_cid_len; |
| 12525 | |
| 12526 | ssl->transform->out_cid_len = *p++; |
| 12527 | |
| 12528 | if( (size_t)( end - p ) < ssl->transform->out_cid_len ) |
| 12529 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12530 | |
Teppo Järvelin | 6f4e030 | 2019-10-04 13:53:53 +0300 | [diff] [blame] | 12531 | /* Not using more secure mbedtls_platform_memcpy as cid is public */ |
| 12532 | memcpy( ssl->transform->out_cid, p, ssl->transform->out_cid_len ); |
Manuel Pégourié-Gonnard | 322f3c7 | 2019-07-15 09:04:11 +0200 | [diff] [blame] | 12533 | p += ssl->transform->out_cid_len; |
| 12534 | #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ |
| 12535 | |
| 12536 | /* |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12537 | * Saved fields from top-level ssl_context structure |
| 12538 | */ |
| 12539 | #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) |
| 12540 | if( (size_t)( end - p ) < 4 ) |
| 12541 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12542 | |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 12543 | ssl->badmac_seen = (unsigned)mbedtls_platform_get_uint32_be( p ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12544 | p += 4; |
| 12545 | #endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT */ |
| 12546 | |
| 12547 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) |
| 12548 | if( (size_t)( end - p ) < 16 ) |
| 12549 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12550 | |
| 12551 | ssl->in_window_top = ( (uint64_t) p[0] << 56 ) | |
| 12552 | ( (uint64_t) p[1] << 48 ) | |
| 12553 | ( (uint64_t) p[2] << 40 ) | |
| 12554 | ( (uint64_t) p[3] << 32 ) | |
| 12555 | ( (uint64_t) p[4] << 24 ) | |
| 12556 | ( (uint64_t) p[5] << 16 ) | |
| 12557 | ( (uint64_t) p[6] << 8 ) | |
| 12558 | ( (uint64_t) p[7] ); |
| 12559 | p += 8; |
| 12560 | |
| 12561 | ssl->in_window = ( (uint64_t) p[0] << 56 ) | |
| 12562 | ( (uint64_t) p[1] << 48 ) | |
| 12563 | ( (uint64_t) p[2] << 40 ) | |
| 12564 | ( (uint64_t) p[3] << 32 ) | |
| 12565 | ( (uint64_t) p[4] << 24 ) | |
| 12566 | ( (uint64_t) p[5] << 16 ) | |
| 12567 | ( (uint64_t) p[6] << 8 ) | |
| 12568 | ( (uint64_t) p[7] ); |
| 12569 | p += 8; |
| 12570 | #endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */ |
| 12571 | |
| 12572 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 12573 | if( (size_t)( end - p ) < 1 ) |
| 12574 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12575 | |
| 12576 | ssl->disable_datagram_packing = *p++; |
| 12577 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 12578 | |
| 12579 | if( (size_t)( end - p ) < 8 ) |
| 12580 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12581 | |
Teppo Järvelin | 91d7938 | 2019-10-02 09:09:31 +0300 | [diff] [blame] | 12582 | mbedtls_platform_memcpy( ssl->cur_out_ctr, p, 8 ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12583 | p += 8; |
| 12584 | |
| 12585 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 12586 | if( (size_t)( end - p ) < 2 ) |
| 12587 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Arto Kinnunen | 4f4849a | 2019-09-09 10:21:18 +0300 | [diff] [blame] | 12588 | ssl->mtu = (uint16_t)mbedtls_platform_get_uint16_be( p ); |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12589 | p += 2; |
| 12590 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
| 12591 | |
| 12592 | #if defined(MBEDTLS_SSL_ALPN) |
| 12593 | { |
| 12594 | uint8_t alpn_len; |
| 12595 | const char **cur; |
| 12596 | |
| 12597 | if( (size_t)( end - p ) < 1 ) |
| 12598 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12599 | |
| 12600 | alpn_len = *p++; |
| 12601 | |
| 12602 | if( alpn_len != 0 && ssl->conf->alpn_list != NULL ) |
| 12603 | { |
| 12604 | /* alpn_chosen should point to an item in the configured list */ |
| 12605 | for( cur = ssl->conf->alpn_list; *cur != NULL; cur++ ) |
| 12606 | { |
| 12607 | if( strlen( *cur ) == alpn_len && |
Piotr Nowicki | e3c4ee5 | 2020-06-23 12:59:56 +0200 | [diff] [blame] | 12608 | mbedtls_platform_memequal( p, cur, alpn_len ) == 0 ) |
Manuel Pégourié-Gonnard | 16d1485 | 2019-07-15 11:23:03 +0200 | [diff] [blame] | 12609 | { |
| 12610 | ssl->alpn_chosen = *cur; |
| 12611 | break; |
| 12612 | } |
| 12613 | } |
| 12614 | } |
| 12615 | |
| 12616 | /* can only happen on conf mismatch */ |
| 12617 | if( alpn_len != 0 && ssl->alpn_chosen == NULL ) |
| 12618 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| 12619 | |
| 12620 | p += alpn_len; |
| 12621 | } |
| 12622 | #endif /* MBEDTLS_SSL_ALPN */ |
| 12623 | |
| 12624 | /* |
Manuel Pégourié-Gonnard | 138079d | 2019-07-15 11:53:51 +0200 | [diff] [blame] | 12625 | * Forced fields from top-level ssl_context structure |
| 12626 | * |
| 12627 | * Most of them already set to the correct value by mbedtls_ssl_init() and |
| 12628 | * mbedtls_ssl_reset(), so we only need to set the remaining ones. |
| 12629 | */ |
| 12630 | ssl->state = MBEDTLS_SSL_HANDSHAKE_OVER; |
| 12631 | |
Manuel Pégourié-Gonnard | 2cc9223 | 2019-07-23 17:11:24 +0200 | [diff] [blame] | 12632 | #if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER) |
Manuel Pégourié-Gonnard | 138079d | 2019-07-15 11:53:51 +0200 | [diff] [blame] | 12633 | ssl->major_ver = MBEDTLS_SSL_MAJOR_VERSION_3; |
Manuel Pégourié-Gonnard | 2cc9223 | 2019-07-23 17:11:24 +0200 | [diff] [blame] | 12634 | #endif /* !MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */ |
| 12635 | #if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER) |
Manuel Pégourié-Gonnard | 138079d | 2019-07-15 11:53:51 +0200 | [diff] [blame] | 12636 | ssl->minor_ver = MBEDTLS_SSL_MINOR_VERSION_3; |
Manuel Pégourié-Gonnard | 2cc9223 | 2019-07-23 17:11:24 +0200 | [diff] [blame] | 12637 | #endif /* !MBEDTLS_SSL_CONF_FIXED_MINOR_VER */ |
Manuel Pégourié-Gonnard | 138079d | 2019-07-15 11:53:51 +0200 | [diff] [blame] | 12638 | |
Hanno Becker | 8398582 | 2019-08-30 10:42:49 +0100 | [diff] [blame] | 12639 | /* Adjust pointers for header fields of outgoing records to |
| 12640 | * the given transform, accounting for explicit IV and CID. */ |
| 12641 | ssl_update_out_pointers( ssl, ssl->transform ); |
| 12642 | |
Manuel Pégourié-Gonnard | 138079d | 2019-07-15 11:53:51 +0200 | [diff] [blame] | 12643 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
| 12644 | ssl->in_epoch = 1; |
| 12645 | #endif |
| 12646 | |
| 12647 | /* mbedtls_ssl_reset() leaves the handshake sub-structure allocated, |
| 12648 | * which we don't want - otherwise we'd end up freeing the wrong transform |
| 12649 | * by calling ssl_handshake_wrapup_free_hs_transform() inappropriately. */ |
| 12650 | if( ssl->handshake != NULL ) |
| 12651 | { |
| 12652 | mbedtls_ssl_handshake_free( ssl ); |
| 12653 | mbedtls_free( ssl->handshake ); |
| 12654 | ssl->handshake = NULL; |
| 12655 | } |
| 12656 | |
| 12657 | /* |
Manuel Pégourié-Gonnard | d0dd104 | 2019-07-11 10:58:10 +0200 | [diff] [blame] | 12658 | * Done - should have consumed entire buffer |
| 12659 | */ |
| 12660 | if( p != end ) |
| 12661 | return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12662 | |
| 12663 | return( 0 ); |
| 12664 | } |
| 12665 | |
| 12666 | /* |
Manuel Pégourié-Gonnard | 8175816 | 2019-07-12 10:50:19 +0200 | [diff] [blame] | 12667 | * Deserialize context: public wrapper for error cleaning |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12668 | */ |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12669 | int mbedtls_ssl_context_load( mbedtls_ssl_context *context, |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12670 | const unsigned char *buf, |
| 12671 | size_t len ) |
| 12672 | { |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12673 | int ret = ssl_context_load( context, buf, len ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12674 | |
Manuel Pégourié-Gonnard | f1f3e52 | 2019-07-11 12:50:53 +0200 | [diff] [blame] | 12675 | if( ret != 0 ) |
| 12676 | mbedtls_ssl_free( context ); |
| 12677 | |
| 12678 | return( ret ); |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12679 | } |
Manuel Pégourié-Gonnard | 4c1d06e | 2019-07-23 16:13:17 +0200 | [diff] [blame] | 12680 | #endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */ |
Manuel Pégourié-Gonnard | d87601e | 2019-05-28 13:02:16 +0200 | [diff] [blame] | 12681 | |
| 12682 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12683 | * Free an SSL context |
| 12684 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12685 | void mbedtls_ssl_free( mbedtls_ssl_context *ssl ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12686 | { |
Paul Bakker | accaffe | 2014-06-26 13:37:14 +0200 | [diff] [blame] | 12687 | if( ssl == NULL ) |
| 12688 | return; |
| 12689 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12690 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> free" ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12691 | |
Manuel Pégourié-Gonnard | 7ee6f0e | 2014-02-13 10:54:07 +0100 | [diff] [blame] | 12692 | if( ssl->out_buf != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12693 | { |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 12694 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 12695 | size_t out_buf_len = ssl->out_buf_len; |
| 12696 | #else |
| 12697 | size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN; |
| 12698 | #endif |
| 12699 | mbedtls_platform_zeroize( ssl->out_buf, out_buf_len ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12700 | mbedtls_free( ssl->out_buf ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12701 | } |
| 12702 | |
Manuel Pégourié-Gonnard | 7ee6f0e | 2014-02-13 10:54:07 +0100 | [diff] [blame] | 12703 | if( ssl->in_buf != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12704 | { |
Andrzej Kurek | f384495 | 2020-10-16 23:03:01 +0200 | [diff] [blame] | 12705 | #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| 12706 | size_t in_buf_len = ssl->in_buf_len; |
| 12707 | #else |
| 12708 | size_t in_buf_len = MBEDTLS_SSL_IN_BUFFER_LEN; |
| 12709 | #endif |
| 12710 | mbedtls_platform_zeroize( ssl->in_buf, in_buf_len ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12711 | mbedtls_free( ssl->in_buf ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12712 | } |
| 12713 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12714 | #if defined(MBEDTLS_ZLIB_SUPPORT) |
Paul Bakker | 1677033 | 2013-10-11 09:59:44 +0200 | [diff] [blame] | 12715 | if( ssl->compress_buf != NULL ) |
| 12716 | { |
Angus Gratton | d8213d0 | 2016-05-25 20:56:48 +1000 | [diff] [blame] | 12717 | mbedtls_platform_zeroize( ssl->compress_buf, MBEDTLS_SSL_COMPRESS_BUFFER_LEN ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12718 | mbedtls_free( ssl->compress_buf ); |
Paul Bakker | 1677033 | 2013-10-11 09:59:44 +0200 | [diff] [blame] | 12719 | } |
| 12720 | #endif |
| 12721 | |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12722 | if( ssl->transform ) |
| 12723 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12724 | mbedtls_ssl_transform_free( ssl->transform ); |
| 12725 | mbedtls_free( ssl->transform ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12726 | } |
| 12727 | |
| 12728 | if( ssl->handshake ) |
| 12729 | { |
Gilles Peskine | 9b562d5 | 2018-04-25 20:32:43 +0200 | [diff] [blame] | 12730 | mbedtls_ssl_handshake_free( ssl ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12731 | mbedtls_ssl_transform_free( ssl->transform_negotiate ); |
| 12732 | mbedtls_ssl_session_free( ssl->session_negotiate ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12733 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12734 | mbedtls_free( ssl->handshake ); |
| 12735 | mbedtls_free( ssl->transform_negotiate ); |
| 12736 | mbedtls_free( ssl->session_negotiate ); |
Paul Bakker | 48916f9 | 2012-09-16 19:57:18 +0000 | [diff] [blame] | 12737 | } |
| 12738 | |
Paul Bakker | c046350 | 2013-02-14 11:19:38 +0100 | [diff] [blame] | 12739 | if( ssl->session ) |
| 12740 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12741 | mbedtls_ssl_session_free( ssl->session ); |
| 12742 | mbedtls_free( ssl->session ); |
Paul Bakker | c046350 | 2013-02-14 11:19:38 +0100 | [diff] [blame] | 12743 | } |
| 12744 | |
Teppo Järvelin | 4009d8f | 2019-08-19 14:48:09 +0300 | [diff] [blame] | 12745 | #if defined(MBEDTLS_X509_CRT_PARSE_C) && !defined(MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION) |
Paul Bakker | 66d5d07 | 2014-06-17 16:39:18 +0200 | [diff] [blame] | 12746 | if( ssl->hostname != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12747 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 12748 | mbedtls_platform_zeroize( ssl->hostname, strlen( ssl->hostname ) ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12749 | mbedtls_free( ssl->hostname ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12750 | } |
Paul Bakker | 0be444a | 2013-08-27 21:55:01 +0200 | [diff] [blame] | 12751 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12752 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12753 | #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) |
| 12754 | if( mbedtls_ssl_hw_record_finish != NULL ) |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 12755 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12756 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_finish()" ) ); |
| 12757 | mbedtls_ssl_hw_record_finish( ssl ); |
Paul Bakker | 05ef835 | 2012-05-08 09:17:57 +0000 | [diff] [blame] | 12758 | } |
| 12759 | #endif |
| 12760 | |
Manuel Pégourié-Gonnard | e057d3b | 2015-05-20 10:59:43 +0200 | [diff] [blame] | 12761 | #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12762 | mbedtls_free( ssl->cli_id ); |
Manuel Pégourié-Gonnard | 43c0218 | 2014-07-22 17:32:01 +0200 | [diff] [blame] | 12763 | #endif |
| 12764 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 12765 | MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= free" ) ); |
Paul Bakker | 2da561c | 2009-02-05 18:00:28 +0000 | [diff] [blame] | 12766 | |
Paul Bakker | 86f04f4 | 2013-02-14 11:20:09 +0100 | [diff] [blame] | 12767 | /* Actually clear after last debug message */ |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 12768 | mbedtls_platform_zeroize( ssl, sizeof( mbedtls_ssl_context ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 12769 | } |
| 12770 | |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12771 | /* |
| 12772 | * Initialze mbedtls_ssl_config |
| 12773 | */ |
| 12774 | void mbedtls_ssl_config_init( mbedtls_ssl_config *conf ) |
| 12775 | { |
| 12776 | memset( conf, 0, sizeof( mbedtls_ssl_config ) ); |
Manuel Pégourié-Gonnard | e744eab | 2019-03-18 10:51:18 +0100 | [diff] [blame] | 12777 | |
| 12778 | #if !defined(MBEDTLS_SSL_PROTO_TLS) |
| 12779 | conf->transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; |
| 12780 | #endif |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12781 | } |
| 12782 | |
Simon Butcher | c97b697 | 2015-12-27 23:48:17 +0000 | [diff] [blame] | 12783 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 12784 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_SIG_HASH) |
Manuel Pégourié-Gonnard | 47229c7 | 2015-12-04 15:02:56 +0100 | [diff] [blame] | 12785 | static int ssl_preset_default_hashes[] = { |
| 12786 | #if defined(MBEDTLS_SHA512_C) |
| 12787 | MBEDTLS_MD_SHA512, |
| 12788 | MBEDTLS_MD_SHA384, |
| 12789 | #endif |
| 12790 | #if defined(MBEDTLS_SHA256_C) |
| 12791 | MBEDTLS_MD_SHA256, |
| 12792 | MBEDTLS_MD_SHA224, |
| 12793 | #endif |
Gilles Peskine | 5d2511c | 2017-05-12 13:16:40 +0200 | [diff] [blame] | 12794 | #if defined(MBEDTLS_SHA1_C) && defined(MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE) |
Manuel Pégourié-Gonnard | 47229c7 | 2015-12-04 15:02:56 +0100 | [diff] [blame] | 12795 | MBEDTLS_MD_SHA1, |
| 12796 | #endif |
| 12797 | MBEDTLS_MD_NONE |
| 12798 | }; |
Simon Butcher | c97b697 | 2015-12-27 23:48:17 +0000 | [diff] [blame] | 12799 | #endif |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 12800 | #endif |
Manuel Pégourié-Gonnard | 47229c7 | 2015-12-04 15:02:56 +0100 | [diff] [blame] | 12801 | |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 12802 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12803 | static int ssl_preset_suiteb_ciphersuites[] = { |
| 12804 | MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, |
| 12805 | MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, |
| 12806 | 0 |
| 12807 | }; |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 12808 | #endif /* !MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE */ |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12809 | |
Manuel Pégourié-Gonnard | e5f3072 | 2015-10-22 17:01:15 +0200 | [diff] [blame] | 12810 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 12811 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_SIG_HASH) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12812 | static int ssl_preset_suiteb_hashes[] = { |
| 12813 | MBEDTLS_MD_SHA256, |
| 12814 | MBEDTLS_MD_SHA384, |
| 12815 | MBEDTLS_MD_NONE |
| 12816 | }; |
| 12817 | #endif |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 12818 | #endif |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12819 | |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 12820 | #if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_SSL_CONF_SINGLE_EC) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12821 | static mbedtls_ecp_group_id ssl_preset_suiteb_curves[] = { |
Jaeden Amero | 16529b2 | 2019-06-03 08:27:16 +0100 | [diff] [blame] | 12822 | #if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12823 | MBEDTLS_ECP_DP_SECP256R1, |
Jaeden Amero | 16529b2 | 2019-06-03 08:27:16 +0100 | [diff] [blame] | 12824 | #endif |
| 12825 | #if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12826 | MBEDTLS_ECP_DP_SECP384R1, |
Jaeden Amero | 16529b2 | 2019-06-03 08:27:16 +0100 | [diff] [blame] | 12827 | #endif |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12828 | MBEDTLS_ECP_DP_NONE |
| 12829 | }; |
| 12830 | #endif |
| 12831 | |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12832 | /* |
Tillmann Karras | 588ad50 | 2015-09-25 04:27:22 +0200 | [diff] [blame] | 12833 | * Load default in mbedtls_ssl_config |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12834 | */ |
Manuel Pégourié-Gonnard | 419d5ae | 2015-05-04 19:32:36 +0200 | [diff] [blame] | 12835 | int mbedtls_ssl_config_defaults( mbedtls_ssl_config *conf, |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12836 | int endpoint, int transport, int preset ) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12837 | { |
Manuel Pégourié-Gonnard | 8b431fb | 2015-05-11 12:54:52 +0200 | [diff] [blame] | 12838 | #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12839 | int ret; |
Manuel Pégourié-Gonnard | 8b431fb | 2015-05-11 12:54:52 +0200 | [diff] [blame] | 12840 | #endif |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12841 | |
Manuel Pégourié-Gonnard | 0de074f | 2015-05-14 12:58:01 +0200 | [diff] [blame] | 12842 | /* Use the functions here so that they are covered in tests, |
| 12843 | * but otherwise access member directly for efficiency */ |
| 12844 | mbedtls_ssl_conf_endpoint( conf, endpoint ); |
| 12845 | mbedtls_ssl_conf_transport( conf, transport ); |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12846 | |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12847 | /* |
| 12848 | * Things that are common to all presets |
| 12849 | */ |
Manuel Pégourié-Gonnard | 419d5ae | 2015-05-04 19:32:36 +0200 | [diff] [blame] | 12850 | #if defined(MBEDTLS_SSL_CLI_C) |
| 12851 | if( endpoint == MBEDTLS_SSL_IS_CLIENT ) |
| 12852 | { |
Hanno Becker | acd4fc0 | 2019-06-12 16:40:50 +0100 | [diff] [blame] | 12853 | #if !defined(MBEDTLS_SSL_CONF_AUTHMODE) |
Manuel Pégourié-Gonnard | 419d5ae | 2015-05-04 19:32:36 +0200 | [diff] [blame] | 12854 | conf->authmode = MBEDTLS_SSL_VERIFY_REQUIRED; |
Hanno Becker | acd4fc0 | 2019-06-12 16:40:50 +0100 | [diff] [blame] | 12855 | #endif /* !MBEDTLS_SSL_CONF_AUTHMODE */ |
Manuel Pégourié-Gonnard | 419d5ae | 2015-05-04 19:32:36 +0200 | [diff] [blame] | 12856 | #if defined(MBEDTLS_SSL_SESSION_TICKETS) |
| 12857 | conf->session_tickets = MBEDTLS_SSL_SESSION_TICKETS_ENABLED; |
| 12858 | #endif |
| 12859 | } |
| 12860 | #endif |
| 12861 | |
Manuel Pégourié-Gonnard | 66dc555 | 2015-05-14 12:28:21 +0200 | [diff] [blame] | 12862 | #if defined(MBEDTLS_ARC4_C) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12863 | conf->arc4_disabled = MBEDTLS_SSL_ARC4_DISABLED; |
Manuel Pégourié-Gonnard | 66dc555 | 2015-05-14 12:28:21 +0200 | [diff] [blame] | 12864 | #endif |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12865 | |
| 12866 | #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) |
| 12867 | conf->encrypt_then_mac = MBEDTLS_SSL_ETM_ENABLED; |
| 12868 | #endif |
| 12869 | |
| 12870 | #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) |
Hanno Becker | aabbb58 | 2019-06-11 13:43:27 +0100 | [diff] [blame] | 12871 | #if !defined(MBEDTLS_SSL_CONF_EXTENDED_MASTER_SECRET) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12872 | conf->extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED; |
Hanno Becker | aabbb58 | 2019-06-11 13:43:27 +0100 | [diff] [blame] | 12873 | #endif /* !MBEDTLS_SSL_CONF_EXTENDED_MASTER_SECRET */ |
| 12874 | #if !defined(MBEDTLS_SSL_CONF_ENFORCE_EXTENDED_MASTER_SECRET) |
Jarno Lamsa | d9382f8 | 2019-06-10 10:27:14 +0300 | [diff] [blame] | 12875 | conf->enforce_extended_master_secret = |
Jarno Lamsa | 18b9a49 | 2019-06-10 15:23:29 +0300 | [diff] [blame] | 12876 | MBEDTLS_SSL_EXTENDED_MS_ENFORCE_DISABLED; |
Hanno Becker | aabbb58 | 2019-06-11 13:43:27 +0100 | [diff] [blame] | 12877 | #endif /* !MBEDTLS_SSL_CONF_ENFORCE_EXTENDED_MASTER_SECRET */ |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12878 | #endif |
| 12879 | |
Manuel Pégourié-Gonnard | 17eab2b | 2015-05-05 16:34:53 +0100 | [diff] [blame] | 12880 | #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) |
| 12881 | conf->cbc_record_splitting = MBEDTLS_SSL_CBC_RECORD_SPLITTING_ENABLED; |
| 12882 | #endif |
| 12883 | |
Manuel Pégourié-Gonnard | e057d3b | 2015-05-20 10:59:43 +0200 | [diff] [blame] | 12884 | #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12885 | conf->f_cookie_write = ssl_cookie_write_dummy; |
| 12886 | conf->f_cookie_check = ssl_cookie_check_dummy; |
| 12887 | #endif |
| 12888 | |
Hanno Becker | 7f376f4 | 2019-06-12 16:20:48 +0100 | [diff] [blame] | 12889 | #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) && \ |
| 12890 | !defined(MBEDTLS_SSL_CONF_ANTI_REPLAY) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12891 | conf->anti_replay = MBEDTLS_SSL_ANTI_REPLAY_ENABLED; |
| 12892 | #endif |
| 12893 | |
Janos Follath | 088ce43 | 2017-04-10 12:42:31 +0100 | [diff] [blame] | 12894 | #if defined(MBEDTLS_SSL_SRV_C) |
Hanno Becker | c2cfdaa | 2019-06-13 12:33:03 +0100 | [diff] [blame] | 12895 | #if !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST) |
Janos Follath | 088ce43 | 2017-04-10 12:42:31 +0100 | [diff] [blame] | 12896 | conf->cert_req_ca_list = MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED; |
Hanno Becker | c2cfdaa | 2019-06-13 12:33:03 +0100 | [diff] [blame] | 12897 | #endif /* !MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */ |
| 12898 | #endif /* MBEDTLS_SSL_SRV_C */ |
Janos Follath | 088ce43 | 2017-04-10 12:42:31 +0100 | [diff] [blame] | 12899 | |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12900 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 12901 | #if !defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12902 | conf->hs_timeout_min = MBEDTLS_SSL_DTLS_TIMEOUT_DFL_MIN; |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 12903 | #endif /* !MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN */ |
| 12904 | #if !defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12905 | conf->hs_timeout_max = MBEDTLS_SSL_DTLS_TIMEOUT_DFL_MAX; |
Hanno Becker | 1f835fa | 2019-06-13 10:14:59 +0100 | [diff] [blame] | 12906 | #endif /* !MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX */ |
| 12907 | #endif /* MBEDTLS_SSL_PROTO_DTLS */ |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12908 | |
| 12909 | #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| 12910 | conf->renego_max_records = MBEDTLS_SSL_RENEGO_MAX_RECORDS_DEFAULT; |
Manuel Pégourié-Gonnard | 7a346b8 | 2019-10-02 14:47:01 +0200 | [diff] [blame] | 12911 | mbedtls_platform_memset( conf->renego_period, 0x00, 2 ); |
| 12912 | mbedtls_platform_memset( conf->renego_period + 2, 0xFF, 6 ); |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12913 | #endif |
| 12914 | |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12915 | #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C) |
| 12916 | if( endpoint == MBEDTLS_SSL_IS_SERVER ) |
| 12917 | { |
Hanno Becker | 00d0a68 | 2017-10-04 13:14:29 +0100 | [diff] [blame] | 12918 | const unsigned char dhm_p[] = |
| 12919 | MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN; |
| 12920 | const unsigned char dhm_g[] = |
| 12921 | MBEDTLS_DHM_RFC3526_MODP_2048_G_BIN; |
| 12922 | |
Hanno Becker | a90658f | 2017-10-04 15:29:08 +0100 | [diff] [blame] | 12923 | if ( ( ret = mbedtls_ssl_conf_dh_param_bin( conf, |
| 12924 | dhm_p, sizeof( dhm_p ), |
| 12925 | dhm_g, sizeof( dhm_g ) ) ) != 0 ) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12926 | { |
| 12927 | return( ret ); |
| 12928 | } |
| 12929 | } |
Manuel Pégourié-Gonnard | bd990d6 | 2015-06-11 14:49:42 +0200 | [diff] [blame] | 12930 | #endif |
| 12931 | |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12932 | /* |
| 12933 | * Preset-specific defaults |
| 12934 | */ |
| 12935 | switch( preset ) |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12936 | { |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12937 | /* |
| 12938 | * NSA Suite B |
| 12939 | */ |
| 12940 | case MBEDTLS_SSL_PRESET_SUITEB: |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12941 | #if !defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12942 | conf->min_major_ver = MBEDTLS_SSL_MAJOR_VERSION_3; |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12943 | #endif /* !MBEDTLS_SSL_CONF_MIN_MAJOR_VER */ |
| 12944 | #if !defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12945 | conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_3; /* TLS 1.2 */ |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12946 | #endif /* !MBEDTLS_SSL_CONF_MIN_MINOR_VER */ |
| 12947 | #if !defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12948 | conf->max_major_ver = MBEDTLS_SSL_MAX_MAJOR_VERSION; |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12949 | #endif /* !MBEDTLS_SSL_CONF_MAX_MAJOR_VER */ |
| 12950 | #if !defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12951 | conf->max_minor_ver = MBEDTLS_SSL_MAX_MINOR_VERSION; |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12952 | #endif /* !MBEDTLS_SSL_CONF_MAX_MINOR_VER */ |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12953 | |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 12954 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 12955 | conf->ciphersuite_list[0] = |
| 12956 | conf->ciphersuite_list[1] = |
| 12957 | conf->ciphersuite_list[2] = |
| 12958 | conf->ciphersuite_list[3] = |
| 12959 | ssl_preset_suiteb_ciphersuites; |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 12960 | #endif /* MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE */ |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12961 | |
| 12962 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 12963 | conf->cert_profile = &mbedtls_x509_crt_profile_suiteb; |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 12964 | #endif |
| 12965 | |
Manuel Pégourié-Gonnard | e5f3072 | 2015-10-22 17:01:15 +0200 | [diff] [blame] | 12966 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 12967 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_SIG_HASH) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12968 | conf->sig_hashes = ssl_preset_suiteb_hashes; |
| 12969 | #endif |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 12970 | #endif |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12971 | |
| 12972 | #if defined(MBEDTLS_ECP_C) |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 12973 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_EC) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12974 | conf->curve_list = ssl_preset_suiteb_curves; |
| 12975 | #endif |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 12976 | #endif |
Manuel Pégourié-Gonnard | c98204e | 2015-08-11 04:21:01 +0200 | [diff] [blame] | 12977 | break; |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12978 | |
| 12979 | /* |
| 12980 | * Default |
| 12981 | */ |
| 12982 | default: |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12983 | #if !defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) |
Ron Eldor | 5e9f14d | 2017-05-28 10:46:38 +0300 | [diff] [blame] | 12984 | conf->min_major_ver = ( MBEDTLS_SSL_MIN_MAJOR_VERSION > |
| 12985 | MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION ) ? |
| 12986 | MBEDTLS_SSL_MIN_MAJOR_VERSION : |
| 12987 | MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION; |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12988 | #endif /* !MBEDTLS_SSL_CONF_MIN_MAJOR_VER */ |
| 12989 | #if !defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) |
Ron Eldor | 5e9f14d | 2017-05-28 10:46:38 +0300 | [diff] [blame] | 12990 | conf->min_minor_ver = ( MBEDTLS_SSL_MIN_MINOR_VERSION > |
| 12991 | MBEDTLS_SSL_MIN_VALID_MINOR_VERSION ) ? |
| 12992 | MBEDTLS_SSL_MIN_MINOR_VERSION : |
| 12993 | MBEDTLS_SSL_MIN_VALID_MINOR_VERSION; |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12994 | #if defined(MBEDTLS_SSL_PROTO_DTLS) |
Manuel Pégourié-Gonnard | 64c1681 | 2019-06-06 12:43:51 +0200 | [diff] [blame] | 12995 | if( MBEDTLS_SSL_TRANSPORT_IS_DTLS( transport ) ) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 12996 | conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_2; |
| 12997 | #endif |
Hanno Becker | e965bd3 | 2019-06-12 14:04:34 +0100 | [diff] [blame] | 12998 | #endif /* !MBEDTLS_SSL_CONF_MIN_MINOR_VER */ |
| 12999 | #if !defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER) |
| 13000 | conf->max_major_ver = MBEDTLS_SSL_MAX_MAJOR_VERSION; |
| 13001 | #endif /* !MBEDTLS_SSL_CONF_MAX_MAJOR_VER */ |
| 13002 | #if !defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) |
| 13003 | conf->max_minor_ver = MBEDTLS_SSL_MAX_MINOR_VERSION; |
| 13004 | #endif /* !MBEDTLS_SSL_CONF_MAX_MINOR_VER */ |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 13005 | |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 13006 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE) |
Hanno Becker | 7bcf2b5 | 2019-07-26 09:02:40 +0100 | [diff] [blame] | 13007 | conf->ciphersuite_list[0] = |
| 13008 | conf->ciphersuite_list[1] = |
| 13009 | conf->ciphersuite_list[2] = |
| 13010 | conf->ciphersuite_list[3] = |
| 13011 | mbedtls_ssl_list_ciphersuites(); |
Hanno Becker | 73f4cb1 | 2019-06-27 13:51:07 +0100 | [diff] [blame] | 13012 | #endif /* MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE */ |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 13013 | |
| 13014 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 13015 | conf->cert_profile = &mbedtls_x509_crt_profile_default; |
| 13016 | #endif |
| 13017 | |
Manuel Pégourié-Gonnard | e5f3072 | 2015-10-22 17:01:15 +0200 | [diff] [blame] | 13018 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 13019 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_SIG_HASH) |
Manuel Pégourié-Gonnard | 47229c7 | 2015-12-04 15:02:56 +0100 | [diff] [blame] | 13020 | conf->sig_hashes = ssl_preset_default_hashes; |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 13021 | #endif |
Hanno Becker | 56595f4 | 2019-06-19 16:31:38 +0100 | [diff] [blame] | 13022 | #endif |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 13023 | |
| 13024 | #if defined(MBEDTLS_ECP_C) |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 13025 | #if !defined(MBEDTLS_SSL_CONF_SINGLE_EC) |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 13026 | conf->curve_list = mbedtls_ecp_grp_id_list(); |
| 13027 | #endif |
Hanno Becker | c1096e7 | 2019-06-19 12:30:41 +0100 | [diff] [blame] | 13028 | #endif |
Manuel Pégourié-Gonnard | b31c5f6 | 2015-06-17 13:53:47 +0200 | [diff] [blame] | 13029 | |
| 13030 | #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C) |
| 13031 | conf->dhm_min_bitlen = 1024; |
| 13032 | #endif |
| 13033 | } |
| 13034 | |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 13035 | return( 0 ); |
| 13036 | } |
| 13037 | |
| 13038 | /* |
| 13039 | * Free mbedtls_ssl_config |
| 13040 | */ |
| 13041 | void mbedtls_ssl_config_free( mbedtls_ssl_config *conf ) |
| 13042 | { |
| 13043 | #if defined(MBEDTLS_DHM_C) |
| 13044 | mbedtls_mpi_free( &conf->dhm_P ); |
| 13045 | mbedtls_mpi_free( &conf->dhm_G ); |
| 13046 | #endif |
| 13047 | |
| 13048 | #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) |
| 13049 | if( conf->psk != NULL ) |
| 13050 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 13051 | mbedtls_platform_zeroize( conf->psk, conf->psk_len ); |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 13052 | mbedtls_free( conf->psk ); |
Azim Khan | 27e8a12 | 2018-03-21 14:24:11 +0000 | [diff] [blame] | 13053 | conf->psk = NULL; |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 13054 | conf->psk_len = 0; |
junyeonLEE | 316b162 | 2017-12-20 16:29:30 +0900 | [diff] [blame] | 13055 | } |
| 13056 | |
| 13057 | if( conf->psk_identity != NULL ) |
| 13058 | { |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 13059 | mbedtls_platform_zeroize( conf->psk_identity, conf->psk_identity_len ); |
junyeonLEE | 316b162 | 2017-12-20 16:29:30 +0900 | [diff] [blame] | 13060 | mbedtls_free( conf->psk_identity ); |
Azim Khan | 27e8a12 | 2018-03-21 14:24:11 +0000 | [diff] [blame] | 13061 | conf->psk_identity = NULL; |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 13062 | conf->psk_identity_len = 0; |
| 13063 | } |
| 13064 | #endif |
| 13065 | |
| 13066 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 13067 | ssl_key_cert_free( conf->key_cert ); |
| 13068 | #endif |
| 13069 | |
Andres Amaya Garcia | 1f6301b | 2018-04-17 09:51:09 -0500 | [diff] [blame] | 13070 | mbedtls_platform_zeroize( conf, sizeof( mbedtls_ssl_config ) ); |
Manuel Pégourié-Gonnard | cd523e2 | 2015-05-04 13:35:39 +0200 | [diff] [blame] | 13071 | } |
| 13072 | |
Manuel Pégourié-Gonnard | 5674a97 | 2015-10-19 15:14:03 +0200 | [diff] [blame] | 13073 | #if defined(MBEDTLS_PK_C) && \ |
Jarno Lamsa | 7cb5c11 | 2019-04-23 15:54:56 +0300 | [diff] [blame] | 13074 | ( defined(MBEDTLS_RSA_C) || defined(MBEDTLS_ECDSA_C) ) || \ |
| 13075 | ( defined(MBEDTLS_USE_TINYCRYPT) ) |
Manuel Pégourié-Gonnard | 0d42049 | 2013-08-21 16:14:26 +0200 | [diff] [blame] | 13076 | /* |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13077 | * Convert between MBEDTLS_PK_XXX and SSL_SIG_XXX |
Manuel Pégourié-Gonnard | 0d42049 | 2013-08-21 16:14:26 +0200 | [diff] [blame] | 13078 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13079 | unsigned char mbedtls_ssl_sig_from_pk( mbedtls_pk_context *pk ) |
Manuel Pégourié-Gonnard | 0d42049 | 2013-08-21 16:14:26 +0200 | [diff] [blame] | 13080 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13081 | #if defined(MBEDTLS_RSA_C) |
| 13082 | if( mbedtls_pk_can_do( pk, MBEDTLS_PK_RSA ) ) |
| 13083 | return( MBEDTLS_SSL_SIG_RSA ); |
Manuel Pégourié-Gonnard | 0d42049 | 2013-08-21 16:14:26 +0200 | [diff] [blame] | 13084 | #endif |
Jarno Lamsa | 7cb5c11 | 2019-04-23 15:54:56 +0300 | [diff] [blame] | 13085 | #if defined(MBEDTLS_ECDSA_C) || defined(MBEDTLS_USE_TINYCRYPT) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13086 | if( mbedtls_pk_can_do( pk, MBEDTLS_PK_ECDSA ) ) |
| 13087 | return( MBEDTLS_SSL_SIG_ECDSA ); |
Manuel Pégourié-Gonnard | 0d42049 | 2013-08-21 16:14:26 +0200 | [diff] [blame] | 13088 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13089 | return( MBEDTLS_SSL_SIG_ANON ); |
Manuel Pégourié-Gonnard | 0d42049 | 2013-08-21 16:14:26 +0200 | [diff] [blame] | 13090 | } |
| 13091 | |
Hanno Becker | 7e5437a | 2017-04-28 17:15:26 +0100 | [diff] [blame] | 13092 | unsigned char mbedtls_ssl_sig_from_pk_alg( mbedtls_pk_type_t type ) |
| 13093 | { |
| 13094 | switch( type ) { |
| 13095 | case MBEDTLS_PK_RSA: |
| 13096 | return( MBEDTLS_SSL_SIG_RSA ); |
| 13097 | case MBEDTLS_PK_ECDSA: |
| 13098 | case MBEDTLS_PK_ECKEY: |
| 13099 | return( MBEDTLS_SSL_SIG_ECDSA ); |
| 13100 | default: |
| 13101 | return( MBEDTLS_SSL_SIG_ANON ); |
| 13102 | } |
| 13103 | } |
| 13104 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13105 | mbedtls_pk_type_t mbedtls_ssl_pk_alg_from_sig( unsigned char sig ) |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13106 | { |
| 13107 | switch( sig ) |
| 13108 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13109 | #if defined(MBEDTLS_RSA_C) |
| 13110 | case MBEDTLS_SSL_SIG_RSA: |
| 13111 | return( MBEDTLS_PK_RSA ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13112 | #endif |
Jarno Lamsa | 7cb5c11 | 2019-04-23 15:54:56 +0300 | [diff] [blame] | 13113 | #if defined(MBEDTLS_ECDSA_C) || defined(MBEDTLS_USE_TINYCRYPT) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13114 | case MBEDTLS_SSL_SIG_ECDSA: |
| 13115 | return( MBEDTLS_PK_ECDSA ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13116 | #endif |
| 13117 | default: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13118 | return( MBEDTLS_PK_NONE ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13119 | } |
| 13120 | } |
Manuel Pégourié-Gonnard | 5674a97 | 2015-10-19 15:14:03 +0200 | [diff] [blame] | 13121 | #endif /* MBEDTLS_PK_C && ( MBEDTLS_RSA_C || MBEDTLS_ECDSA_C ) */ |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13122 | |
Hanno Becker | 7e5437a | 2017-04-28 17:15:26 +0100 | [diff] [blame] | 13123 | #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \ |
| 13124 | defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
| 13125 | |
| 13126 | /* Find an entry in a signature-hash set matching a given hash algorithm. */ |
| 13127 | mbedtls_md_type_t mbedtls_ssl_sig_hash_set_find( mbedtls_ssl_sig_hash_set_t *set, |
| 13128 | mbedtls_pk_type_t sig_alg ) |
| 13129 | { |
| 13130 | switch( sig_alg ) |
| 13131 | { |
| 13132 | case MBEDTLS_PK_RSA: |
| 13133 | return( set->rsa ); |
| 13134 | case MBEDTLS_PK_ECDSA: |
| 13135 | return( set->ecdsa ); |
| 13136 | default: |
| 13137 | return( MBEDTLS_MD_NONE ); |
| 13138 | } |
| 13139 | } |
| 13140 | |
| 13141 | /* Add a signature-hash-pair to a signature-hash set */ |
| 13142 | void mbedtls_ssl_sig_hash_set_add( mbedtls_ssl_sig_hash_set_t *set, |
| 13143 | mbedtls_pk_type_t sig_alg, |
| 13144 | mbedtls_md_type_t md_alg ) |
| 13145 | { |
| 13146 | switch( sig_alg ) |
| 13147 | { |
| 13148 | case MBEDTLS_PK_RSA: |
| 13149 | if( set->rsa == MBEDTLS_MD_NONE ) |
| 13150 | set->rsa = md_alg; |
| 13151 | break; |
| 13152 | |
| 13153 | case MBEDTLS_PK_ECDSA: |
| 13154 | if( set->ecdsa == MBEDTLS_MD_NONE ) |
| 13155 | set->ecdsa = md_alg; |
| 13156 | break; |
| 13157 | |
| 13158 | default: |
| 13159 | break; |
| 13160 | } |
| 13161 | } |
| 13162 | |
| 13163 | /* Allow exactly one hash algorithm for each signature. */ |
| 13164 | void mbedtls_ssl_sig_hash_set_const_hash( mbedtls_ssl_sig_hash_set_t *set, |
| 13165 | mbedtls_md_type_t md_alg ) |
| 13166 | { |
| 13167 | set->rsa = md_alg; |
| 13168 | set->ecdsa = md_alg; |
| 13169 | } |
| 13170 | |
| 13171 | #endif /* MBEDTLS_SSL_PROTO_TLS1_2) && |
| 13172 | MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED */ |
| 13173 | |
Manuel Pégourié-Gonnard | 1a48383 | 2013-09-20 12:29:15 +0200 | [diff] [blame] | 13174 | /* |
Manuel Pégourié-Gonnard | 7bfc122 | 2015-06-17 14:34:48 +0200 | [diff] [blame] | 13175 | * Convert from MBEDTLS_SSL_HASH_XXX to MBEDTLS_MD_XXX |
Manuel Pégourié-Gonnard | 1a48383 | 2013-09-20 12:29:15 +0200 | [diff] [blame] | 13176 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13177 | mbedtls_md_type_t mbedtls_ssl_md_alg_from_hash( unsigned char hash ) |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13178 | { |
| 13179 | switch( hash ) |
| 13180 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13181 | #if defined(MBEDTLS_MD5_C) |
| 13182 | case MBEDTLS_SSL_HASH_MD5: |
| 13183 | return( MBEDTLS_MD_MD5 ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13184 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13185 | #if defined(MBEDTLS_SHA1_C) |
| 13186 | case MBEDTLS_SSL_HASH_SHA1: |
| 13187 | return( MBEDTLS_MD_SHA1 ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13188 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13189 | #if defined(MBEDTLS_SHA256_C) |
| 13190 | case MBEDTLS_SSL_HASH_SHA224: |
| 13191 | return( MBEDTLS_MD_SHA224 ); |
| 13192 | case MBEDTLS_SSL_HASH_SHA256: |
| 13193 | return( MBEDTLS_MD_SHA256 ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13194 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13195 | #if defined(MBEDTLS_SHA512_C) |
| 13196 | case MBEDTLS_SSL_HASH_SHA384: |
| 13197 | return( MBEDTLS_MD_SHA384 ); |
| 13198 | case MBEDTLS_SSL_HASH_SHA512: |
| 13199 | return( MBEDTLS_MD_SHA512 ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13200 | #endif |
| 13201 | default: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13202 | return( MBEDTLS_MD_NONE ); |
Manuel Pégourié-Gonnard | a20c58c | 2013-08-22 13:52:48 +0200 | [diff] [blame] | 13203 | } |
| 13204 | } |
| 13205 | |
Manuel Pégourié-Gonnard | 7bfc122 | 2015-06-17 14:34:48 +0200 | [diff] [blame] | 13206 | /* |
| 13207 | * Convert from MBEDTLS_MD_XXX to MBEDTLS_SSL_HASH_XXX |
| 13208 | */ |
| 13209 | unsigned char mbedtls_ssl_hash_from_md_alg( int md ) |
| 13210 | { |
| 13211 | switch( md ) |
| 13212 | { |
| 13213 | #if defined(MBEDTLS_MD5_C) |
| 13214 | case MBEDTLS_MD_MD5: |
| 13215 | return( MBEDTLS_SSL_HASH_MD5 ); |
| 13216 | #endif |
| 13217 | #if defined(MBEDTLS_SHA1_C) |
| 13218 | case MBEDTLS_MD_SHA1: |
| 13219 | return( MBEDTLS_SSL_HASH_SHA1 ); |
| 13220 | #endif |
| 13221 | #if defined(MBEDTLS_SHA256_C) |
| 13222 | case MBEDTLS_MD_SHA224: |
| 13223 | return( MBEDTLS_SSL_HASH_SHA224 ); |
| 13224 | case MBEDTLS_MD_SHA256: |
| 13225 | return( MBEDTLS_SSL_HASH_SHA256 ); |
| 13226 | #endif |
| 13227 | #if defined(MBEDTLS_SHA512_C) |
| 13228 | case MBEDTLS_MD_SHA384: |
| 13229 | return( MBEDTLS_SSL_HASH_SHA384 ); |
| 13230 | case MBEDTLS_MD_SHA512: |
| 13231 | return( MBEDTLS_SSL_HASH_SHA512 ); |
| 13232 | #endif |
| 13233 | default: |
| 13234 | return( MBEDTLS_SSL_HASH_NONE ); |
| 13235 | } |
| 13236 | } |
| 13237 | |
Hanno Becker | ee902df | 2019-08-23 13:47:47 +0100 | [diff] [blame] | 13238 | #if defined(MBEDTLS_USE_TINYCRYPT) |
| 13239 | /* |
| 13240 | * Check if a curve proposed by the peer is in our list. |
| 13241 | * Return 0 if we're willing to use it, -1 otherwise. |
| 13242 | */ |
| 13243 | int mbedtls_ssl_check_curve_uecc( const mbedtls_ssl_context *ssl, |
| 13244 | mbedtls_uecc_group_id grp_id ) |
| 13245 | { |
| 13246 | MBEDTLS_SSL_BEGIN_FOR_EACH_SUPPORTED_UECC_GRP_ID( own_ec_id ) |
| 13247 | if( own_ec_id == grp_id ) |
| 13248 | return( 0 ); |
| 13249 | MBEDTLS_SSL_END_FOR_EACH_SUPPORTED_UECC_GRP_ID |
| 13250 | |
| 13251 | return( -1 ); |
| 13252 | } |
| 13253 | #endif /* MBEDTLS_USE_TINYCRYPT */ |
| 13254 | |
Manuel Pégourié-Gonnard | b541da6 | 2015-06-17 11:43:30 +0200 | [diff] [blame] | 13255 | #if defined(MBEDTLS_ECP_C) |
Manuel Pégourié-Gonnard | ab24010 | 2014-02-04 16:18:07 +0100 | [diff] [blame] | 13256 | /* |
Manuel Pégourié-Gonnard | 7bfc122 | 2015-06-17 14:34:48 +0200 | [diff] [blame] | 13257 | * Check if a curve proposed by the peer is in our list. |
Manuel Pégourié-Gonnard | 9d412d8 | 2015-06-17 12:10:46 +0200 | [diff] [blame] | 13258 | * Return 0 if we're willing to use it, -1 otherwise. |
Manuel Pégourié-Gonnard | ab24010 | 2014-02-04 16:18:07 +0100 | [diff] [blame] | 13259 | */ |
Hanno Becker | ee902df | 2019-08-23 13:47:47 +0100 | [diff] [blame] | 13260 | int mbedtls_ssl_check_curve( const mbedtls_ssl_context *ssl, |
| 13261 | mbedtls_ecp_group_id grp_id ) |
Manuel Pégourié-Gonnard | ab24010 | 2014-02-04 16:18:07 +0100 | [diff] [blame] | 13262 | { |
Hanno Becker | a4a9c69 | 2019-06-18 16:55:47 +0100 | [diff] [blame] | 13263 | MBEDTLS_SSL_BEGIN_FOR_EACH_SUPPORTED_EC_GRP_ID( own_ec_id ) |
| 13264 | if( own_ec_id == grp_id ) |
| 13265 | return( 0 ); |
| 13266 | MBEDTLS_SSL_END_FOR_EACH_SUPPORTED_EC_GRP_ID |
Manuel Pégourié-Gonnard | ab24010 | 2014-02-04 16:18:07 +0100 | [diff] [blame] | 13267 | |
Manuel Pégourié-Gonnard | 9d412d8 | 2015-06-17 12:10:46 +0200 | [diff] [blame] | 13268 | return( -1 ); |
Manuel Pégourié-Gonnard | ab24010 | 2014-02-04 16:18:07 +0100 | [diff] [blame] | 13269 | } |
Manuel Pégourié-Gonnard | b541da6 | 2015-06-17 11:43:30 +0200 | [diff] [blame] | 13270 | #endif /* MBEDTLS_ECP_C */ |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13271 | |
Manuel Pégourié-Gonnard | e5f3072 | 2015-10-22 17:01:15 +0200 | [diff] [blame] | 13272 | #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) |
Manuel Pégourié-Gonnard | 7bfc122 | 2015-06-17 14:34:48 +0200 | [diff] [blame] | 13273 | /* |
| 13274 | * Check if a hash proposed by the peer is in our list. |
| 13275 | * Return 0 if we're willing to use it, -1 otherwise. |
| 13276 | */ |
| 13277 | int mbedtls_ssl_check_sig_hash( const mbedtls_ssl_context *ssl, |
| 13278 | mbedtls_md_type_t md ) |
| 13279 | { |
Hanno Becker | f1bc9e1 | 2019-06-19 16:23:21 +0100 | [diff] [blame] | 13280 | MBEDTLS_SSL_BEGIN_FOR_EACH_SIG_HASH( md_alg ) |
| 13281 | if( md_alg == md ) |
| 13282 | return( 0 ); |
| 13283 | MBEDTLS_SSL_END_FOR_EACH_SIG_HASH |
Manuel Pégourié-Gonnard | 7bfc122 | 2015-06-17 14:34:48 +0200 | [diff] [blame] | 13284 | |
| 13285 | return( -1 ); |
| 13286 | } |
Manuel Pégourié-Gonnard | e5f3072 | 2015-10-22 17:01:15 +0200 | [diff] [blame] | 13287 | #endif /* MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED */ |
Manuel Pégourié-Gonnard | 7bfc122 | 2015-06-17 14:34:48 +0200 | [diff] [blame] | 13288 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13289 | #if defined(MBEDTLS_X509_CRT_PARSE_C) |
| 13290 | int mbedtls_ssl_check_cert_usage( const mbedtls_x509_crt *cert, |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 13291 | mbedtls_ssl_ciphersuite_handle_t ciphersuite, |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13292 | int cert_endpoint, |
Manuel Pégourié-Gonnard | e6ef16f | 2015-05-11 19:54:43 +0200 | [diff] [blame] | 13293 | uint32_t *flags ) |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13294 | { |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13295 | int ret = 0; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13296 | #if defined(MBEDTLS_X509_CHECK_KEY_USAGE) |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13297 | int usage = 0; |
| 13298 | #endif |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13299 | #if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE) |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13300 | const char *ext_oid; |
| 13301 | size_t ext_len; |
| 13302 | #endif |
| 13303 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13304 | #if !defined(MBEDTLS_X509_CHECK_KEY_USAGE) && \ |
| 13305 | !defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE) |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13306 | ((void) cert); |
| 13307 | ((void) cert_endpoint); |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13308 | ((void) flags); |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13309 | #endif |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13310 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13311 | #if defined(MBEDTLS_X509_CHECK_KEY_USAGE) |
| 13312 | if( cert_endpoint == MBEDTLS_SSL_IS_SERVER ) |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13313 | { |
| 13314 | /* Server part of the key exchange */ |
Hanno Becker | 473f98f | 2019-06-26 10:27:32 +0100 | [diff] [blame] | 13315 | switch( mbedtls_ssl_suite_get_key_exchange( ciphersuite ) ) |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13316 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13317 | case MBEDTLS_KEY_EXCHANGE_RSA: |
| 13318 | case MBEDTLS_KEY_EXCHANGE_RSA_PSK: |
Manuel Pégourié-Gonnard | e6028c9 | 2015-04-20 12:19:02 +0100 | [diff] [blame] | 13319 | usage = MBEDTLS_X509_KU_KEY_ENCIPHERMENT; |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13320 | break; |
| 13321 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13322 | case MBEDTLS_KEY_EXCHANGE_DHE_RSA: |
| 13323 | case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA: |
| 13324 | case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA: |
| 13325 | usage = MBEDTLS_X509_KU_DIGITAL_SIGNATURE; |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13326 | break; |
| 13327 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13328 | case MBEDTLS_KEY_EXCHANGE_ECDH_RSA: |
| 13329 | case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA: |
Manuel Pégourié-Gonnard | e6028c9 | 2015-04-20 12:19:02 +0100 | [diff] [blame] | 13330 | usage = MBEDTLS_X509_KU_KEY_AGREEMENT; |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13331 | break; |
| 13332 | |
| 13333 | /* Don't use default: we want warnings when adding new values */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13334 | case MBEDTLS_KEY_EXCHANGE_NONE: |
| 13335 | case MBEDTLS_KEY_EXCHANGE_PSK: |
| 13336 | case MBEDTLS_KEY_EXCHANGE_DHE_PSK: |
| 13337 | case MBEDTLS_KEY_EXCHANGE_ECDHE_PSK: |
Manuel Pégourié-Gonnard | 557535d | 2015-09-15 17:53:32 +0200 | [diff] [blame] | 13338 | case MBEDTLS_KEY_EXCHANGE_ECJPAKE: |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13339 | usage = 0; |
| 13340 | } |
| 13341 | } |
| 13342 | else |
| 13343 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13344 | /* Client auth: we only implement rsa_sign and mbedtls_ecdsa_sign for now */ |
| 13345 | usage = MBEDTLS_X509_KU_DIGITAL_SIGNATURE; |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13346 | } |
| 13347 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13348 | if( mbedtls_x509_crt_check_key_usage( cert, usage ) != 0 ) |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13349 | { |
Manuel Pégourié-Gonnard | e6028c9 | 2015-04-20 12:19:02 +0100 | [diff] [blame] | 13350 | *flags |= MBEDTLS_X509_BADCERT_KEY_USAGE; |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13351 | ret = -1; |
| 13352 | } |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13353 | #else |
| 13354 | ((void) ciphersuite); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13355 | #endif /* MBEDTLS_X509_CHECK_KEY_USAGE */ |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13356 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13357 | #if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE) |
| 13358 | if( cert_endpoint == MBEDTLS_SSL_IS_SERVER ) |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13359 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13360 | ext_oid = MBEDTLS_OID_SERVER_AUTH; |
| 13361 | ext_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_SERVER_AUTH ); |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13362 | } |
| 13363 | else |
| 13364 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13365 | ext_oid = MBEDTLS_OID_CLIENT_AUTH; |
| 13366 | ext_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_CLIENT_AUTH ); |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13367 | } |
| 13368 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13369 | if( mbedtls_x509_crt_check_extended_key_usage( cert, ext_oid, ext_len ) != 0 ) |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13370 | { |
Manuel Pégourié-Gonnard | e6028c9 | 2015-04-20 12:19:02 +0100 | [diff] [blame] | 13371 | *flags |= MBEDTLS_X509_BADCERT_EXT_KEY_USAGE; |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13372 | ret = -1; |
| 13373 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13374 | #endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */ |
Manuel Pégourié-Gonnard | 0408fd1 | 2014-04-11 11:06:22 +0200 | [diff] [blame] | 13375 | |
Manuel Pégourié-Gonnard | e6efa6f | 2015-04-20 11:01:48 +0100 | [diff] [blame] | 13376 | return( ret ); |
Manuel Pégourié-Gonnard | 7f2a07d | 2014-04-09 09:50:57 +0200 | [diff] [blame] | 13377 | } |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13378 | #endif /* MBEDTLS_X509_CRT_PARSE_C */ |
Manuel Pégourié-Gonnard | 3a306b9 | 2014-04-29 15:11:17 +0200 | [diff] [blame] | 13379 | |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13380 | #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \ |
| 13381 | defined(MBEDTLS_SSL_PROTO_TLS1_1) |
| 13382 | int mbedtls_ssl_get_key_exchange_md_ssl_tls( mbedtls_ssl_context *ssl, |
| 13383 | unsigned char *output, |
| 13384 | unsigned char *data, size_t data_len ) |
| 13385 | { |
| 13386 | int ret = 0; |
| 13387 | mbedtls_md5_context mbedtls_md5; |
| 13388 | mbedtls_sha1_context mbedtls_sha1; |
| 13389 | |
| 13390 | mbedtls_md5_init( &mbedtls_md5 ); |
| 13391 | mbedtls_sha1_init( &mbedtls_sha1 ); |
| 13392 | |
| 13393 | /* |
| 13394 | * digitally-signed struct { |
| 13395 | * opaque md5_hash[16]; |
| 13396 | * opaque sha_hash[20]; |
| 13397 | * }; |
| 13398 | * |
| 13399 | * md5_hash |
| 13400 | * MD5(ClientHello.random + ServerHello.random |
| 13401 | * + ServerParams); |
| 13402 | * sha_hash |
| 13403 | * SHA(ClientHello.random + ServerHello.random |
| 13404 | * + ServerParams); |
| 13405 | */ |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13406 | if( ( ret = mbedtls_md5_starts_ret( &mbedtls_md5 ) ) != 0 ) |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13407 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13408 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md5_starts_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13409 | goto exit; |
| 13410 | } |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13411 | if( ( ret = mbedtls_md5_update_ret( &mbedtls_md5, |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13412 | ssl->handshake->randbytes, 64 ) ) != 0 ) |
| 13413 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13414 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md5_update_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13415 | goto exit; |
| 13416 | } |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13417 | if( ( ret = mbedtls_md5_update_ret( &mbedtls_md5, data, data_len ) ) != 0 ) |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13418 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13419 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md5_update_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13420 | goto exit; |
| 13421 | } |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13422 | if( ( ret = mbedtls_md5_finish_ret( &mbedtls_md5, output ) ) != 0 ) |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13423 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13424 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md5_finish_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13425 | goto exit; |
| 13426 | } |
| 13427 | |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13428 | if( ( ret = mbedtls_sha1_starts_ret( &mbedtls_sha1 ) ) != 0 ) |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13429 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13430 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_sha1_starts_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13431 | goto exit; |
| 13432 | } |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13433 | if( ( ret = mbedtls_sha1_update_ret( &mbedtls_sha1, |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13434 | ssl->handshake->randbytes, 64 ) ) != 0 ) |
| 13435 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13436 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_sha1_update_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13437 | goto exit; |
| 13438 | } |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13439 | if( ( ret = mbedtls_sha1_update_ret( &mbedtls_sha1, data, |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13440 | data_len ) ) != 0 ) |
| 13441 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13442 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_sha1_update_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13443 | goto exit; |
| 13444 | } |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13445 | if( ( ret = mbedtls_sha1_finish_ret( &mbedtls_sha1, |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13446 | output + 16 ) ) != 0 ) |
| 13447 | { |
Gilles Peskine | 9e4f77c | 2018-01-22 11:48:08 +0100 | [diff] [blame] | 13448 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_sha1_finish_ret", ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13449 | goto exit; |
| 13450 | } |
| 13451 | |
| 13452 | exit: |
| 13453 | mbedtls_md5_free( &mbedtls_md5 ); |
| 13454 | mbedtls_sha1_free( &mbedtls_sha1 ); |
| 13455 | |
| 13456 | if( ret != 0 ) |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 13457 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 13458 | MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13459 | |
| 13460 | return( ret ); |
| 13461 | |
| 13462 | } |
| 13463 | #endif /* MBEDTLS_SSL_PROTO_SSL3 || MBEDTLS_SSL_PROTO_TLS1 || \ |
| 13464 | MBEDTLS_SSL_PROTO_TLS1_1 */ |
| 13465 | |
| 13466 | #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \ |
| 13467 | defined(MBEDTLS_SSL_PROTO_TLS1_2) |
| 13468 | int mbedtls_ssl_get_key_exchange_md_tls1_2( mbedtls_ssl_context *ssl, |
Gilles Peskine | ca1d742 | 2018-04-24 11:53:22 +0200 | [diff] [blame] | 13469 | unsigned char *hash, size_t *hashlen, |
| 13470 | unsigned char *data, size_t data_len, |
| 13471 | mbedtls_md_type_t md_alg ) |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13472 | { |
| 13473 | int ret = 0; |
| 13474 | mbedtls_md_context_t ctx; |
Andrzej Kurek | 84bde41 | 2020-07-06 15:27:34 -0400 | [diff] [blame] | 13475 | |
Hanno Becker | a5cedbc | 2019-07-17 11:21:02 +0100 | [diff] [blame] | 13476 | mbedtls_md_handle_t md_info = mbedtls_md_info_from_type( md_alg ); |
Gilles Peskine | ca1d742 | 2018-04-24 11:53:22 +0200 | [diff] [blame] | 13477 | *hashlen = mbedtls_md_get_size( md_info ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13478 | |
| 13479 | mbedtls_md_init( &ctx ); |
| 13480 | |
| 13481 | /* |
| 13482 | * digitally-signed struct { |
| 13483 | * opaque client_random[32]; |
| 13484 | * opaque server_random[32]; |
| 13485 | * ServerDHParams params; |
| 13486 | * }; |
| 13487 | */ |
| 13488 | if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 ) |
| 13489 | { |
| 13490 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_setup", ret ); |
| 13491 | goto exit; |
| 13492 | } |
| 13493 | if( ( ret = mbedtls_md_starts( &ctx ) ) != 0 ) |
| 13494 | { |
| 13495 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_starts", ret ); |
| 13496 | goto exit; |
| 13497 | } |
| 13498 | if( ( ret = mbedtls_md_update( &ctx, ssl->handshake->randbytes, 64 ) ) != 0 ) |
| 13499 | { |
| 13500 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_update", ret ); |
| 13501 | goto exit; |
| 13502 | } |
| 13503 | if( ( ret = mbedtls_md_update( &ctx, data, data_len ) ) != 0 ) |
| 13504 | { |
| 13505 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_update", ret ); |
| 13506 | goto exit; |
| 13507 | } |
Gilles Peskine | ca1d742 | 2018-04-24 11:53:22 +0200 | [diff] [blame] | 13508 | if( ( ret = mbedtls_md_finish( &ctx, hash ) ) != 0 ) |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13509 | { |
| 13510 | MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_finish", ret ); |
| 13511 | goto exit; |
| 13512 | } |
| 13513 | |
| 13514 | exit: |
| 13515 | mbedtls_md_free( &ctx ); |
| 13516 | |
| 13517 | if( ret != 0 ) |
Hanno Becker | de62da9 | 2019-07-24 13:23:50 +0100 | [diff] [blame] | 13518 | mbedtls_ssl_pend_fatal_alert( ssl, |
| 13519 | MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13520 | |
Andrzej Kurek | afec885 | 2020-07-15 16:31:27 -0400 | [diff] [blame] | 13521 | return( ret ); |
Andres Amaya Garcia | 46f5a3e | 2017-07-20 16:17:51 +0100 | [diff] [blame] | 13522 | } |
| 13523 | #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || \ |
| 13524 | MBEDTLS_SSL_PROTO_TLS1_2 */ |
| 13525 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 13526 | #endif /* MBEDTLS_SSL_TLS_C */ |