nghttp2/src/ssl.cc

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2014-03-04 13:29:42 +01:00
/*
2014-03-30 12:09:21 +02:00
* nghttp2 - HTTP/2 C Library
2014-03-04 13:29:42 +01:00
*
* Copyright (c) 2014 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "ssl.h"
#include <cassert>
#include <vector>
#include <mutex>
#include <iostream>
#include <openssl/crypto.h>
namespace nghttp2 {
namespace ssl {
namespace {
std::vector<std::mutex> ssl_global_locks;
} // namespace
namespace {
void ssl_locking_cb(int mode, int type, const char *file, int line)
{
if(mode & CRYPTO_LOCK) {
ssl_global_locks[type].lock();
} else {
ssl_global_locks[type].unlock();
}
}
} // namespace
LibsslGlobalLock::LibsslGlobalLock()
{
if(!ssl_global_locks.empty()) {
std::cerr << "OpenSSL global lock has been already set" << std::endl;
assert(0);
}
ssl_global_locks = std::vector<std::mutex>(CRYPTO_num_locks());
// CRYPTO_set_id_callback(ssl_thread_id); OpenSSL manual says that
// if threadid_func is not specified using
// CRYPTO_THREADID_set_callback(), then default implementation is
// used. We use this default one.
CRYPTO_set_locking_callback(ssl_locking_cb);
}
LibsslGlobalLock::~LibsslGlobalLock()
{
ssl_global_locks.clear();
}
} // namespace ssl
} // namespace nghttp2