OpenSSLCrypto.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "OpenSSLCrypto.h"
#include <openssl/crypto.h>
 
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#include <openssl/provider.h>
OSSL_PROVIDER* LegacyProvider;
#endif
 
void OpenSSLCrypto::threadsSetup([[maybe_unused]] boost::filesystem::path const& providerModulePath)
{
#ifdef VALGRIND
 ValgrindRandomSetup();
#endif
 
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#if TRINITY_PLATFORM == TRINITY_PLATFORM_WINDOWS
 OSSL_PROVIDER_set_default_search_path(nullptr, providerModulePath.string().c_str());
#endif
 LegacyProvider = OSSL_PROVIDER_try_load(nullptr, "legacy", 1);
#endif
}
 
void OpenSSLCrypto::threadsCleanup()
{
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
 OSSL_PROVIDER_unload(LegacyProvider);
 OSSL_PROVIDER_set_default_search_path(nullptr, nullptr);
#endif
}
 
#ifdef VALGRIND
#include <openssl/rand.h>
 
RAND_METHOD const* default_rand;
 
static int Valgrind_RAND_seed(const void* buf, int num)
{
 VALGRIND_DISCARD(VALGRIND_MAKE_MEM_DEFINED(buf, num));
 return default_rand->seed(buf, num);
}
 
static int Valgrind_RAND_bytes(unsigned char* buf, int num)
{
 int ret = default_rand->bytes(buf, num);
 VALGRIND_DISCARD(VALGRIND_MAKE_MEM_DEFINED(buf, num));
 return ret;
}
 
static void Valgrind_RAND_cleanup(void)
{
 default_rand->cleanup();
}
 
static int Valgrind_RAND_add(const void* buf, int num, double randomness)
{
 VALGRIND_DISCARD(VALGRIND_MAKE_MEM_DEFINED(buf, num));
 return default_rand->add(buf, num, randomness);
}
 
static int Valgrind_RAND_pseudorand(unsigned char* buf, int num)
{
 int ret = default_rand->pseudorand(buf, num);
 VALGRIND_DISCARD(VALGRIND_MAKE_MEM_DEFINED(buf, num));
 return ret;
}
 
static int Valgrind_RAND_status(void)
{
 return default_rand->status();
}
 
static RAND_METHOD valgrind_rand;
 
void ValgrindRandomSetup()
{
 memset(&valgrind_rand, 0, sizeof(RAND_METHOD));
 default_rand = RAND_get_rand_method();
 if (default_rand->seed)
 valgrind_rand.seed = &Valgrind_RAND_seed;
 if (default_rand->bytes)
 valgrind_rand.bytes = &Valgrind_RAND_bytes;
 if (default_rand->cleanup)
 valgrind_rand.cleanup = &Valgrind_RAND_cleanup;
 if (default_rand->add)
 valgrind_rand.add = &Valgrind_RAND_add;
 if (default_rand->pseudorand)
 valgrind_rand.pseudorand = &Valgrind_RAND_pseudorand;
 if (default_rand->status)
 valgrind_rand.status = &Valgrind_RAND_status;
 RAND_set_rand_method(&valgrind_rand);
}
#endif