mbedtls/programs/test/dlopen.c

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/*
* Test dynamic loading of libmbed*
*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mbedtls/config.h"
#include "mbedtls/platform.h"
#if !defined(MBEDTLS_PLATFORM_C)
#include <stdio.h>
#include <stdlib.h>
#define mbedtls_fprintf fprintf
#define mbedtls_printf printf
#define mbedtls_exit exit
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
#endif
#if defined(MBEDTLS_X509_CRT_PARSE_C)
#include "mbedtls/x509_crt.h"
#endif
#if defined(__APPLE__)
#define SO_SUFFIX ".dylib"
#else
#define SO_SUFFIX ".so"
#endif
#define CRYPTO_SO_FILENAME "libmbedcrypto" SO_SUFFIX
#define X509_SO_FILENAME "libmbedx509" SO_SUFFIX
#define TLS_SO_FILENAME "libmbedtls" SO_SUFFIX
#include <dlfcn.h>
#define CHECK_DLERROR( function, argument ) \
do \
{ \
char *CHECK_DLERROR_error = dlerror ( ); \
if( CHECK_DLERROR_error != NULL ) \
{ \
fprintf( stderr, "Dynamic loading error for %s(%s): %s\n", \
function, argument, CHECK_DLERROR_error ); \
mbedtls_exit( MBEDTLS_EXIT_FAILURE ); \
} \
} \
while( 0 )
int main( void )
{
#if defined(MBEDTLS_MD_C) || defined(MBEDTLS_SSL_TLS_C)
unsigned n;
#endif
#if defined(MBEDTLS_SSL_TLS_C)
void *tls_so = dlopen( TLS_SO_FILENAME, RTLD_NOW );
CHECK_DLERROR( "dlopen", TLS_SO_FILENAME );
const int *( *ssl_list_ciphersuites )( void ) =
dlsym( tls_so, "mbedtls_ssl_list_ciphersuites" );
CHECK_DLERROR( "dlsym", "mbedtls_ssl_list_ciphersuites" );
const int *ciphersuites = ssl_list_ciphersuites( );
for( n = 0; ciphersuites[n] != 0; n++ )
/* nothing to do, we're just counting */;
mbedtls_printf( "dlopen(%s): %u ciphersuites\n",
TLS_SO_FILENAME, n );
dlclose( tls_so );
CHECK_DLERROR( "dlclose", TLS_SO_FILENAME );
#endif /* MBEDTLS_SSL_TLS_C */
#if defined(MBEDTLS_X509_CRT_PARSE_C)
void *x509_so = dlopen( X509_SO_FILENAME, RTLD_NOW );
CHECK_DLERROR( "dlopen", X509_SO_FILENAME );
const mbedtls_x509_crt_profile *profile =
dlsym( x509_so, "mbedtls_x509_crt_profile_default" );
CHECK_DLERROR( "dlsym", "mbedtls_x509_crt_profile_default" );
mbedtls_printf( "dlopen(%s): Allowed md mask: %08x\n",
X509_SO_FILENAME, (unsigned) profile->allowed_mds );
dlclose( x509_so );
CHECK_DLERROR( "dlclose", X509_SO_FILENAME );
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_MD_C)
void *crypto_so = dlopen( CRYPTO_SO_FILENAME, RTLD_NOW );
CHECK_DLERROR( "dlopen", CRYPTO_SO_FILENAME );
const int *( *md_list )( void ) =
dlsym( crypto_so, "mbedtls_md_list" );
CHECK_DLERROR( "dlsym", "mbedtls_md_list" );
const int *mds = md_list( );
for( n = 0; mds[n] != 0; n++ )
/* nothing to do, we're just counting */;
mbedtls_printf( "dlopen(%s): %u hashes\n",
CRYPTO_SO_FILENAME, n );
dlclose( crypto_so );
CHECK_DLERROR( "dlclose", CRYPTO_SO_FILENAME );
#endif /* MBEDTLS_MD_C */
return( 0 );
}