| /* |
| * Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <openssl/opensslv.h> |
| #include <openssl/ssl.h> |
| #include <openssl/ossl_typ.h> |
| #include "crypto/dso_conf.h" |
| |
| typedef void DSO; |
| |
| typedef const SSL_METHOD * (*TLS_method_t)(void); |
| typedef SSL_CTX * (*SSL_CTX_new_t)(const SSL_METHOD *meth); |
| typedef void (*SSL_CTX_free_t)(SSL_CTX *); |
| typedef int (*OPENSSL_init_crypto_t)(uint64_t, void *); |
| typedef int (*OPENSSL_atexit_t)(void (*handler)(void)); |
| typedef unsigned long (*ERR_get_error_t)(void); |
| typedef unsigned long (*OpenSSL_version_num_t)(void); |
| typedef DSO * (*DSO_dsobyaddr_t)(void (*addr)(void), int flags); |
| typedef int (*DSO_free_t)(DSO *dso); |
| |
| typedef enum test_types_en { |
| CRYPTO_FIRST, |
| SSL_FIRST, |
| JUST_CRYPTO, |
| DSO_REFTEST, |
| NO_ATEXIT |
| } TEST_TYPE; |
| |
| static TEST_TYPE test_type; |
| static const char *path_crypto; |
| static const char *path_ssl; |
| static const char *path_atexit; |
| |
| #ifdef DSO_DLFCN |
| |
| # include <dlfcn.h> |
| |
| # define SHLIB_INIT NULL |
| |
| typedef void *SHLIB; |
| typedef void *SHLIB_SYM; |
| |
| static int shlib_load(const char *filename, SHLIB *lib) |
| { |
| int dl_flags = (RTLD_GLOBAL|RTLD_LAZY); |
| #ifdef _AIX |
| if (filename[strlen(filename) - 1] == ')') |
| dl_flags |= RTLD_MEMBER; |
| #endif |
| *lib = dlopen(filename, dl_flags); |
| return *lib == NULL ? 0 : 1; |
| } |
| |
| static int shlib_sym(SHLIB lib, const char *symname, SHLIB_SYM *sym) |
| { |
| *sym = dlsym(lib, symname); |
| return *sym != NULL; |
| } |
| |
| static int shlib_close(SHLIB lib) |
| { |
| return dlclose(lib) != 0 ? 0 : 1; |
| } |
| #endif |
| |
| #ifdef DSO_WIN32 |
| |
| # include <windows.h> |
| |
| # define SHLIB_INIT 0 |
| |
| typedef HINSTANCE SHLIB; |
| typedef void *SHLIB_SYM; |
| |
| static int shlib_load(const char *filename, SHLIB *lib) |
| { |
| *lib = LoadLibraryA(filename); |
| return *lib == NULL ? 0 : 1; |
| } |
| |
| static int shlib_sym(SHLIB lib, const char *symname, SHLIB_SYM *sym) |
| { |
| *sym = (SHLIB_SYM)GetProcAddress(lib, symname); |
| return *sym != NULL; |
| } |
| |
| static int shlib_close(SHLIB lib) |
| { |
| return FreeLibrary(lib) == 0 ? 0 : 1; |
| } |
| #endif |
| |
| |
| #if defined(DSO_DLFCN) || defined(DSO_WIN32) |
| |
| static int atexit_handler_done = 0; |
| |
| static void atexit_handler(void) |
| { |
| FILE *atexit_file = fopen(path_atexit, "w"); |
| |
| if (atexit_file == NULL) |
| return; |
| |
| fprintf(atexit_file, "atexit() run\n"); |
| fclose(atexit_file); |
| atexit_handler_done++; |
| } |
| |
| static int test_lib(void) |
| { |
| SHLIB ssllib = SHLIB_INIT; |
| SHLIB cryptolib = SHLIB_INIT; |
| SSL_CTX *ctx; |
| union { |
| void (*func)(void); |
| SHLIB_SYM sym; |
| } symbols[3]; |
| TLS_method_t myTLS_method; |
| SSL_CTX_new_t mySSL_CTX_new; |
| SSL_CTX_free_t mySSL_CTX_free; |
| ERR_get_error_t myERR_get_error; |
| OpenSSL_version_num_t myOpenSSL_version_num; |
| OPENSSL_atexit_t myOPENSSL_atexit; |
| int result = 0; |
| |
| switch (test_type) { |
| case JUST_CRYPTO: |
| case DSO_REFTEST: |
| case NO_ATEXIT: |
| case CRYPTO_FIRST: |
| if (!shlib_load(path_crypto, &cryptolib)) { |
| fprintf(stderr, "Failed to load libcrypto\n"); |
| goto end; |
| } |
| if (test_type != CRYPTO_FIRST) |
| break; |
| /* Fall through */ |
| |
| case SSL_FIRST: |
| if (!shlib_load(path_ssl, &ssllib)) { |
| fprintf(stderr, "Failed to load libssl\n"); |
| goto end; |
| } |
| if (test_type != SSL_FIRST) |
| break; |
| if (!shlib_load(path_crypto, &cryptolib)) { |
| fprintf(stderr, "Failed to load libcrypto\n"); |
| goto end; |
| } |
| break; |
| } |
| |
| if (test_type == NO_ATEXIT) { |
| OPENSSL_init_crypto_t myOPENSSL_init_crypto; |
| |
| if (!shlib_sym(cryptolib, "OPENSSL_init_crypto", &symbols[0].sym)) { |
| fprintf(stderr, "Failed to load OPENSSL_init_crypto symbol\n"); |
| goto end; |
| } |
| myOPENSSL_init_crypto = (OPENSSL_init_crypto_t)symbols[0].func; |
| if (!myOPENSSL_init_crypto(OPENSSL_INIT_NO_ATEXIT, NULL)) { |
| fprintf(stderr, "Failed to initialise libcrypto\n"); |
| goto end; |
| } |
| } |
| |
| if (test_type != JUST_CRYPTO |
| && test_type != DSO_REFTEST |
| && test_type != NO_ATEXIT) { |
| if (!shlib_sym(ssllib, "TLS_method", &symbols[0].sym) |
| || !shlib_sym(ssllib, "SSL_CTX_new", &symbols[1].sym) |
| || !shlib_sym(ssllib, "SSL_CTX_free", &symbols[2].sym)) { |
| fprintf(stderr, "Failed to load libssl symbols\n"); |
| goto end; |
| } |
| myTLS_method = (TLS_method_t)symbols[0].func; |
| mySSL_CTX_new = (SSL_CTX_new_t)symbols[1].func; |
| mySSL_CTX_free = (SSL_CTX_free_t)symbols[2].func; |
| ctx = mySSL_CTX_new(myTLS_method()); |
| if (ctx == NULL) { |
| fprintf(stderr, "Failed to create SSL_CTX\n"); |
| goto end; |
| } |
| mySSL_CTX_free(ctx); |
| } |
| |
| if (!shlib_sym(cryptolib, "ERR_get_error", &symbols[0].sym) |
| || !shlib_sym(cryptolib, "OpenSSL_version_num", &symbols[1].sym) |
| || !shlib_sym(cryptolib, "OPENSSL_atexit", &symbols[2].sym)) { |
| fprintf(stderr, "Failed to load libcrypto symbols\n"); |
| goto end; |
| } |
| myERR_get_error = (ERR_get_error_t)symbols[0].func; |
| if (myERR_get_error() != 0) { |
| fprintf(stderr, "Unexpected ERR_get_error() response\n"); |
| goto end; |
| } |
| |
| myOpenSSL_version_num = (OpenSSL_version_num_t)symbols[1].func; |
| if (myOpenSSL_version_num() != OPENSSL_VERSION_NUMBER) { |
| fprintf(stderr, "Invalid library version number\n"); |
| goto end; |
| } |
| |
| myOPENSSL_atexit = (OPENSSL_atexit_t)symbols[2].func; |
| if (!myOPENSSL_atexit(atexit_handler)) { |
| fprintf(stderr, "Failed to register atexit handler\n"); |
| goto end; |
| } |
| |
| if (test_type == DSO_REFTEST) { |
| # ifdef DSO_DLFCN |
| DSO_dsobyaddr_t myDSO_dsobyaddr; |
| DSO_free_t myDSO_free; |
| |
| /* |
| * This is resembling the code used in ossl_init_base() and |
| * OPENSSL_atexit() to block unloading the library after dlclose(). |
| * We are not testing this on Windows, because it is done there in a |
| * completely different way. Especially as a call to DSO_dsobyaddr() |
| * will always return an error, because DSO_pathbyaddr() is not |
| * implemented there. |
| */ |
| if (!shlib_sym(cryptolib, "DSO_dsobyaddr", &symbols[0].sym) |
| || !shlib_sym(cryptolib, "DSO_free", &symbols[1].sym)) { |
| fprintf(stderr, "Unable to load DSO symbols\n"); |
| goto end; |
| } |
| |
| myDSO_dsobyaddr = (DSO_dsobyaddr_t)symbols[0].func; |
| myDSO_free = (DSO_free_t)symbols[1].func; |
| |
| { |
| DSO *hndl; |
| /* use known symbol from crypto module */ |
| hndl = myDSO_dsobyaddr((void (*)(void))myERR_get_error, 0); |
| if (hndl == NULL) { |
| fprintf(stderr, "DSO_dsobyaddr() failed\n"); |
| goto end; |
| } |
| myDSO_free(hndl); |
| } |
| # endif /* DSO_DLFCN */ |
| } |
| |
| if (!shlib_close(cryptolib)) { |
| fprintf(stderr, "Failed to close libcrypto\n"); |
| goto end; |
| } |
| |
| if (test_type == CRYPTO_FIRST || test_type == SSL_FIRST) { |
| if (!shlib_close(ssllib)) { |
| fprintf(stderr, "Failed to close libssl\n"); |
| goto end; |
| } |
| } |
| |
| # if defined(OPENSSL_NO_PINSHARED) \ |
| && defined(__GLIBC__) \ |
| && defined(__GLIBC_PREREQ) \ |
| && defined(OPENSSL_SYS_LINUX) |
| # if __GLIBC_PREREQ(2, 3) |
| /* |
| * If we didn't pin the so then we are hopefully on a platform that supports |
| * running atexit() on so unload. If not we might crash. We know this is |
| * true on linux since glibc 2.2.3 |
| */ |
| if (test_type != NO_ATEXIT && atexit_handler_done != 1) { |
| fprintf(stderr, "atexit() handler did not run\n"); |
| goto end; |
| } |
| # endif |
| # endif |
| |
| result = 1; |
| end: |
| return result; |
| } |
| #endif |
| |
| |
| /* |
| * shlibloadtest should not use the normal test framework because we don't want |
| * it to link against libcrypto (which the framework uses). The point of the |
| * test is to check dynamic loading and unloading of libcrypto/libssl. |
| */ |
| int main(int argc, char *argv[]) |
| { |
| const char *p; |
| |
| if (argc != 5) { |
| fprintf(stderr, "Incorrect number of arguments\n"); |
| return 1; |
| } |
| |
| p = argv[1]; |
| |
| if (strcmp(p, "-crypto_first") == 0) { |
| test_type = CRYPTO_FIRST; |
| } else if (strcmp(p, "-ssl_first") == 0) { |
| test_type = SSL_FIRST; |
| } else if (strcmp(p, "-just_crypto") == 0) { |
| test_type = JUST_CRYPTO; |
| } else if (strcmp(p, "-dso_ref") == 0) { |
| test_type = DSO_REFTEST; |
| } else if (strcmp(p, "-no_atexit") == 0) { |
| test_type = NO_ATEXIT; |
| } else { |
| fprintf(stderr, "Unrecognised argument\n"); |
| return 1; |
| } |
| path_crypto = argv[2]; |
| path_ssl = argv[3]; |
| path_atexit = argv[4]; |
| if (path_crypto == NULL || path_ssl == NULL) { |
| fprintf(stderr, "Invalid libcrypto/libssl path\n"); |
| return 1; |
| } |
| |
| #if defined(DSO_DLFCN) || defined(DSO_WIN32) |
| if (!test_lib()) |
| return 1; |
| #endif |
| return 0; |
| } |