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openssl/test/shlibloadtest.c
Matt Caswell d0f2f202c5 Don't link shlibloadtest against libcrypto 
The whole point of shlibloadtest is to test dynamically loading and
unloading the library. If we link shlibloadtest against libcrypto then that
might mask potential issues.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7647)
2019-01-04 13:19:39 +00:00

298 lines
8.3 KiB
C
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/*
* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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 "internal/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 unsigned long (*ERR_get_error_t)(void);
typedef unsigned long (*OPENSSL_version_major_t)(void);
typedef unsigned long (*OPENSSL_version_minor_t)(void);
typedef unsigned long (*OPENSSL_version_patch_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
} TEST_TYPE;
static TEST_TYPE test_type;
static const char *path_crypto;
static const char *path_ssl;
#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 test_lib(void)
{
SHLIB ssllib = SHLIB_INIT;
SHLIB cryptolib = SHLIB_INIT;
SSL_CTX *ctx;
union {
void (*func)(void);
SHLIB_SYM sym;
} symbols[4];
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_major_t myOPENSSL_version_major;
OPENSSL_version_minor_t myOPENSSL_version_minor;
OPENSSL_version_patch_t myOPENSSL_version_patch;
int result = 0;
switch (test_type) {
case JUST_CRYPTO:
case DSO_REFTEST:
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 != JUST_CRYPTO && test_type != DSO_REFTEST) {
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_major", &symbols[1].sym)
|| !shlib_sym(cryptolib, "OPENSSL_version_minor", &symbols[2].sym)
|| !shlib_sym(cryptolib, "OPENSSL_version_patch", &symbols[3].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;
}
/* Library and header version should be identical in this test */
myOPENSSL_version_major = (OPENSSL_version_major_t)symbols[1].func;
myOPENSSL_version_minor = (OPENSSL_version_minor_t)symbols[2].func;
myOPENSSL_version_patch = (OPENSSL_version_patch_t)symbols[3].func;
if (myOPENSSL_version_major() != OPENSSL_VERSION_MAJOR
|| myOPENSSL_version_minor() != OPENSSL_VERSION_MINOR
|| myOPENSSL_version_patch() != OPENSSL_VERSION_PATCH) {
fprintf(stderr, "Invalid library version number\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 */
}
switch (test_type) {
case JUST_CRYPTO:
case DSO_REFTEST:
case CRYPTO_FIRST:
if (!shlib_close(cryptolib)) {
fprintf(stderr, "Failed to close libcrypto\n");
goto end;
}
if (test_type != CRYPTO_FIRST)
break;
/* Fall through */
case SSL_FIRST:
if (test_type == CRYPTO_FIRST && !shlib_close(ssllib)) {
fprintf(stderr, "Failed to close libssl\n");
goto end;
}
if (test_type != SSL_FIRST)
break;
if (!shlib_close(cryptolib)) {
fprintf(stderr, "Failed to close libcrypto\n");
goto end;
}
break;
}
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 != 4) {
fprintf(stderr, "Incorrect number of arguments");
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 {
fprintf(stderr, "Unrecognised argument");
return 1;
}
path_crypto = argv[2];
path_ssl = argv[3];
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;
}
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