mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
synced 2026-02-11 00:00:08 +08:00
100 lines
2.7 KiB
C++
100 lines
2.7 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/>.
|
|
|
|
// Asio TCP socket that can be configured so that open() method
|
|
// always prebinds the socket to a given local address. Useful
|
|
// for TCP clients.
|
|
|
|
#ifndef OPENVPN_ASIO_ASIOBOUNDSOCK_H
|
|
#define OPENVPN_ASIO_ASIOBOUNDSOCK_H
|
|
|
|
#include <openvpn/io/io.hpp>
|
|
|
|
#include <openvpn/addr/ip.hpp>
|
|
#include <openvpn/common/extern.hpp>
|
|
#include <openvpn/common/to_string.hpp>
|
|
|
|
namespace openvpn {
|
|
namespace AsioBoundSocket {
|
|
|
|
typedef openvpn_io::basic_stream_socket<openvpn_io::ip::tcp> SocketBase;
|
|
|
|
class Socket : public SocketBase
|
|
{
|
|
public:
|
|
explicit Socket(openvpn_io::io_context& io_context)
|
|
: SocketBase(io_context)
|
|
{
|
|
}
|
|
|
|
// if port 0, kernel will dynamically allocate free port
|
|
void bind_local(const IP::Addr& addr, const unsigned short port=0)
|
|
{
|
|
bind_local_addr = addr;
|
|
bind_local_port = port;
|
|
}
|
|
|
|
std::string to_string() const
|
|
{
|
|
std::string ret;
|
|
ret.reserve(64);
|
|
if (bind_local_addr.defined())
|
|
{
|
|
ret += "local=[";
|
|
ret += bind_local_addr.to_string();
|
|
ret += "]:";
|
|
ret += openvpn::to_string(bind_local_port);
|
|
}
|
|
try {
|
|
const std::string re = openvpn::to_string(remote_endpoint());
|
|
if (!ret.empty())
|
|
ret += ' ';
|
|
ret += "remote=";
|
|
ret += re;
|
|
}
|
|
catch (const std::exception& e)
|
|
{
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
protected:
|
|
virtual void async_connect_post_open(const protocol_type& protocol, openvpn_io::error_code& ec) override
|
|
{
|
|
if (bind_local_addr.defined())
|
|
{
|
|
set_option(openvpn_io::socket_base::reuse_address(true), ec);
|
|
if (ec)
|
|
return;
|
|
bind(openvpn_io::ip::tcp::endpoint(bind_local_addr.to_asio(), bind_local_port), ec);
|
|
}
|
|
}
|
|
|
|
private:
|
|
IP::Addr bind_local_addr;
|
|
unsigned short bind_local_port = 0;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|