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