Add fetch_hand_message in generic
This function is one common function in generic file, get it from
the encrypted extension and submit one patch independently.
Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index 5c20f29..4aaafa5 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -28,6 +28,38 @@
#include "ssl_misc.h"
+int mbedtls_ssl_tls1_3_fetch_handshake_msg( mbedtls_ssl_context *ssl,
+ unsigned hs_type,
+ unsigned char **buf,
+ size_t *buflen )
+{
+ int ret;
+
+ if( ( ret = mbedtls_ssl_read_record( ssl, 0 ) ) != 0 )
+ {
+ MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
+ goto cleanup;
+ }
+
+ if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ||
+ ssl->in_msg[0] != hs_type )
+ {
+ MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
+ MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE,
+ MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
+ ret = MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
+ goto cleanup;
+ }
+
+ *buf = ssl->in_msg + 4;
+ *buflen = ssl->in_hslen - 4;
+
+
+cleanup:
+
+ return( ret );
+}
+
int mbedtls_ssl_tls13_start_handshake_msg( mbedtls_ssl_context *ssl,
unsigned hs_type,
unsigned char **buf,