Files
OpenVPNAdapter/Sources/OpenVPN3/openvpn/init/initprocess.hpp

93 lines
2.3 KiB
C++

// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012-2017 OpenVPN Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License Version 3
// as published by the Free Software Foundation.
//
// 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program in the COPYING file.
// If not, see <http://www.gnu.org/licenses/>.
// Process-wide static initialization
#ifndef OPENVPN_INIT_INITPROCESS_H
#define OPENVPN_INIT_INITPROCESS_H
#include <thread>
#include <mutex>
#include <openvpn/common/size.hpp>
#include <openvpn/common/base64.hpp>
#include <openvpn/common/extern.hpp>
#include <openvpn/time/time.hpp>
#include <openvpn/compress/compress.hpp>
#include <openvpn/init/cryptoinit.hpp>
#include <openvpn/init/engineinit.hpp>
namespace openvpn {
namespace InitProcess {
class Init
{
public:
Init()
{
// initialize time base
Time::reset_base();
// initialize compression
CompressContext::init_static();
// init OpenSSL if included
init_openssl("auto");
base64_init_static();
}
~Init()
{
base64_uninit_static();
}
private:
// SSL library init happens when instantiated
crypto_init crypto_init_;
};
// process-wide singular instance
OPENVPN_EXTERN Init* the_instance; // GLOBAL
OPENVPN_EXTERN std::mutex the_instance_mutex; // GLOBAL
inline void init()
{
std::lock_guard<std::mutex> lock(the_instance_mutex);
if (!the_instance)
the_instance = new Init();
}
inline void uninit()
{
std::lock_guard<std::mutex> lock(the_instance_mutex);
if (the_instance)
{
delete the_instance;
the_instance = nullptr;
}
}
}
}
#endif