Add test for limit on intermediate certificates
Inspired by test code provided by Nicholas Wilson in PR #351.
The test will fail if someone sets MAX_INTERMEDIATE_CA to a value larger than
18 (default is 8), which is hopefully unlikely and can easily be fixed by
running long.sh again with a larger value if it ever happens.
Current behaviour is suboptimal as flags are not set, but currently the goal
is only to document/test existing behaviour.
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index a9f7cee..a7baec6 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -501,6 +501,45 @@
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void mbedtls_x509_crt_verify_max( char *ca_file, char *chain_dir, int nb_int,
+ int ret_chk, int flags_chk )
+{
+ char file_buf[128];
+ int ret;
+ uint32_t flags;
+ mbedtls_x509_crt trusted, chain;
+
+ /*
+ * We expect chain_dir to contain certificates 00.crt, 01.crt, etc.
+ * with NN.crt signed by NN-1.crt
+ */
+
+ mbedtls_x509_crt_init( &trusted );
+ mbedtls_x509_crt_init( &chain );
+
+ /* Load trusted root */
+ TEST_ASSERT( mbedtls_x509_crt_parse_file( &trusted, ca_file ) == 0 );
+
+ /* Load a chain with nb_int intermediates (from 01 to nb_int),
+ * plus one "end-entity" cert (nb_int + 1) */
+ ret = mbedtls_snprintf( file_buf, sizeof file_buf, "%s/c%02d.pem", chain_dir,
+ nb_int + 1 );
+ TEST_ASSERT( ret > 0 && (size_t) ret < sizeof file_buf );
+ TEST_ASSERT( mbedtls_x509_crt_parse_file( &chain, file_buf ) == 0 );
+
+ /* Try to verify that chain */
+ ret = mbedtls_x509_crt_verify( &chain, &trusted, NULL, NULL, &flags,
+ NULL, NULL );
+ TEST_ASSERT( ret == ret_chk );
+ TEST_ASSERT( flags == (uint32_t) flags_chk );
+
+exit:
+ mbedtls_x509_crt_free( &chain );
+ mbedtls_x509_crt_free( &trusted );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
void mbedtls_x509_crt_verify_chain( char *chain_paths, char *trusted_ca, int flags_result )
{
char* act;