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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>
#include <vector>
#include <thread>
#include <mutex>
std::vector<std::mutex*> cryptoLocks;
void ValgrindRandomSetup();
static void lockingCallback(int mode, int type, const char* /*file*/, int /*line*/)
{
if (mode & CRYPTO_LOCK)
cryptoLocks[type]->lock();
else
cryptoLocks[type]->unlock();
}
static void threadIdCallback(CRYPTO_THREADID * id)
{
(void)id;
CRYPTO_THREADID_set_numeric(id, std::hash<std::thread::id>()(std::this_thread::get_id()));
}
void OpenSSLCrypto::threadsSetup()
{
#ifdef VALGRIND
ValgrindRandomSetup();
#endif
cryptoLocks.resize(CRYPTO_num_locks());
for(int i = 0 ; i < CRYPTO_num_locks(); ++i)
{
cryptoLocks[i] = new std::mutex();
}
(void)&threadIdCallback;
CRYPTO_THREADID_set_callback(threadIdCallback);
(void)&lockingCallback;
CRYPTO_set_locking_callback(lockingCallback);
}
void OpenSSLCrypto::threadsCleanup()
{
CRYPTO_set_locking_callback(nullptr);
CRYPTO_THREADID_set_callback(nullptr);
for(int i = 0 ; i < CRYPTO_num_locks(); ++i)
{
delete cryptoLocks[i];
}
cryptoLocks.resize(0);
}
#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
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