1 /*
2 * Test dynamic loading of libmbed*
3 *
4 * Copyright The Mbed TLS Contributors
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.
18 */
19
20 #if !defined(MBEDTLS_CONFIG_FILE)
21 #include "mbedtls/config.h"
22 #else
23 #include MBEDTLS_CONFIG_FILE
24 #endif
25
26 #include "mbedtls/platform.h"
27 #if !defined(MBEDTLS_PLATFORM_C)
28 #include <stdio.h>
29 #include <stdlib.h>
30 #define mbedtls_fprintf fprintf
31 #define mbedtls_printf printf
32 #define mbedtls_exit exit
33 #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
34 #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
35 #endif
36
37 #if defined(MBEDTLS_X509_CRT_PARSE_C)
38 #include "mbedtls/x509_crt.h"
39 #endif
40
41 #if defined(__APPLE__)
42 #define SO_SUFFIX ".dylib"
43 #else
44 #define SO_SUFFIX ".so"
45 #endif
46
47 #define CRYPTO_SO_FILENAME "libmbedcrypto" SO_SUFFIX
48 #define X509_SO_FILENAME "libmbedx509" SO_SUFFIX
49 #define TLS_SO_FILENAME "libmbedtls" SO_SUFFIX
50
51 #include <dlfcn.h>
52
53 #define CHECK_DLERROR( function, argument ) \
54 do \
55 { \
56 char *CHECK_DLERROR_error = dlerror ( ); \
57 if( CHECK_DLERROR_error != NULL ) \
58 { \
59 fprintf( stderr, "Dynamic loading error for %s(%s): %s\n", \
60 function, argument, CHECK_DLERROR_error ); \
61 mbedtls_exit( MBEDTLS_EXIT_FAILURE ); \
62 } \
63 } \
64 while( 0 )
65
main(void)66 int main( void )
67 {
68 #if defined(MBEDTLS_MD_C) || defined(MBEDTLS_SSL_TLS_C)
69 unsigned n;
70 #endif
71
72 #if defined(MBEDTLS_SSL_TLS_C)
73 void *tls_so = dlopen( TLS_SO_FILENAME, RTLD_NOW );
74 CHECK_DLERROR( "dlopen", TLS_SO_FILENAME );
75 const int *( *ssl_list_ciphersuites )( void ) =
76 dlsym( tls_so, "mbedtls_ssl_list_ciphersuites" );
77 CHECK_DLERROR( "dlsym", "mbedtls_ssl_list_ciphersuites" );
78 const int *ciphersuites = ssl_list_ciphersuites( );
79 for( n = 0; ciphersuites[n] != 0; n++ )
80 /* nothing to do, we're just counting */;
81 mbedtls_printf( "dlopen(%s): %u ciphersuites\n",
82 TLS_SO_FILENAME, n );
83 dlclose( tls_so );
84 CHECK_DLERROR( "dlclose", TLS_SO_FILENAME );
85 #endif /* MBEDTLS_SSL_TLS_C */
86
87 #if defined(MBEDTLS_X509_CRT_PARSE_C)
88 void *x509_so = dlopen( X509_SO_FILENAME, RTLD_NOW );
89 CHECK_DLERROR( "dlopen", X509_SO_FILENAME );
90 const mbedtls_x509_crt_profile *profile =
91 dlsym( x509_so, "mbedtls_x509_crt_profile_default" );
92 CHECK_DLERROR( "dlsym", "mbedtls_x509_crt_profile_default" );
93 mbedtls_printf( "dlopen(%s): Allowed md mask: %08x\n",
94 X509_SO_FILENAME, (unsigned) profile->allowed_mds );
95 dlclose( x509_so );
96 CHECK_DLERROR( "dlclose", X509_SO_FILENAME );
97 #endif /* MBEDTLS_X509_CRT_PARSE_C */
98
99 #if defined(MBEDTLS_MD_C)
100 void *crypto_so = dlopen( CRYPTO_SO_FILENAME, RTLD_NOW );
101 CHECK_DLERROR( "dlopen", CRYPTO_SO_FILENAME );
102 const int *( *md_list )( void ) =
103 dlsym( crypto_so, "mbedtls_md_list" );
104 CHECK_DLERROR( "dlsym", "mbedtls_md_list" );
105 const int *mds = md_list( );
106 for( n = 0; mds[n] != 0; n++ )
107 /* nothing to do, we're just counting */;
108 mbedtls_printf( "dlopen(%s): %u hashes\n",
109 CRYPTO_SO_FILENAME, n );
110 dlclose( crypto_so );
111 CHECK_DLERROR( "dlclose", CRYPTO_SO_FILENAME );
112 #endif /* MBEDTLS_MD_C */
113
114 return( 0 );
115 }
116
117
