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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/>.
*/
#ifndef TRINITYCORE_SSL_STREAM_H
#define TRINITYCORE_SSL_STREAM_H
#include "Define.h"
#include "Socket.h"
#include "SocketConnectionInitializer.h"
#include <boost/asio/ip/tcp.hpp>
#include <boost/asio/ssl/stream.hpp>
#include <boost/system/error_code.hpp>
namespace Trinity::Net
{
namespace SslHandshakeHelpers
{
TC_NETWORK_API void LogFailure(boost::asio::ip::address const& ipAddress, uint16 port, boost::system::error_code const& error);
}
template <typename SocketImpl>
struct SslHandshakeConnectionInitializer final : SocketConnectionInitializer
{
explicit SslHandshakeConnectionInitializer(SocketImpl* socket) : _socket(socket) { }
void Start() override
{
_socket->underlying_stream().async_handshake(boost::asio::ssl::stream_base::server,
[socketRef = _socket->weak_from_this(), self = this->shared_from_this()](boost::system::error_code const& error)
{
std::shared_ptr<SocketImpl> socket = static_pointer_cast<SocketImpl>(socketRef.lock());
if (!socket)
return;
if (error)
{
SslHandshakeHelpers::LogFailure(socket->GetRemoteIpAddress(), socket->GetRemotePort(), error);
socket->CloseSocket();
return;
}
self->InvokeNext();
});
}
private:
SocketImpl* _socket;
};
template<class WrappedStream = IoContextTcpSocket>
class SslStream
{
public:
using executor_type = typename WrappedStream::executor_type;
explicit SslStream(IoContextTcpSocket&& socket, boost::asio::ssl::context& sslContext) : _sslSocket(std::move(socket), sslContext)
{
_sslSocket.set_verify_mode(boost::asio::ssl::verify_none);
}
explicit SslStream(boost::asio::io_context& context, boost::asio::ssl::context& sslContext) : _sslSocket(context, sslContext)
{
_sslSocket.set_verify_mode(boost::asio::ssl::verify_none);
}
// adapting tcp::socket api
boost::asio::io_context::executor_type get_executor()
{
return _sslSocket.get_executor();
}
bool is_open() const
{
return _sslSocket.next_layer().is_open();
}
void close(boost::system::error_code& error)
{
_sslSocket.next_layer().close(error);
}
void shutdown(boost::asio::socket_base::shutdown_type what, boost::system::error_code& shutdownError)
{
_sslSocket.shutdown(shutdownError);
_sslSocket.next_layer().shutdown(what, shutdownError);
}
template<typename ConnectHandlerType>
decltype(auto) async_connect(boost::asio::ip::tcp::endpoint const& endpoint, ConnectHandlerType&& handler)
{
return _sslSocket.next_layer().async_connect(endpoint, std::forward<ConnectHandlerType>(handler));
}
template<typename MutableBufferSequence, typename ReadHandlerType>
decltype(auto) async_read_some(MutableBufferSequence const& buffers, ReadHandlerType&& handler)
{
return _sslSocket.async_read_some(buffers, std::forward<ReadHandlerType>(handler));
}
template<typename ConstBufferSequence, typename WriteHandlerType>
decltype(auto) async_write_some(ConstBufferSequence const& buffers, WriteHandlerType&& handler)
{
return _sslSocket.async_write_some(buffers, std::forward<WriteHandlerType>(handler));
}
template<typename ConstBufferSequence>
std::size_t write_some(ConstBufferSequence const& buffers, boost::system::error_code& error)
{
return _sslSocket.write_some(buffers, error);
}
template<typename WaitHandlerType>
decltype(auto) async_wait(boost::asio::socket_base::wait_type type, WaitHandlerType&& handler)
{
return _sslSocket.next_layer().async_wait(type, std::forward<WaitHandlerType>(handler));
}
template<typename SettableSocketOption>
void set_option(SettableSocketOption const& option, boost::system::error_code& error)
{
_sslSocket.next_layer().set_option(option, error);
}
IoContextTcpSocket::endpoint_type remote_endpoint() const
{
return _sslSocket.next_layer().remote_endpoint();
}
// ssl api
template<typename HandshakeHandlerType>
decltype(auto) async_handshake(boost::asio::ssl::stream_base::handshake_type type, HandshakeHandlerType&& handler)
{
return _sslSocket.async_handshake(type, std::forward<HandshakeHandlerType>(handler));
}
void set_server_name(std::string const& serverName, boost::system::error_code& error)
{
if (!SSL_set_tlsext_host_name(_sslSocket.native_handle(), serverName.c_str()))
error.assign(static_cast<int>(::ERR_get_error()), boost::asio::error::get_ssl_category());
}
protected:
boost::asio::ssl::stream<WrappedStream> _sslSocket;
};
}
#endif // TRINITYCORE_SSL_STREAM_H
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