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/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methods used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2014 Markus Grüneis, Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun 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 3 of the License, or
* any later version.
*
* Anytun 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 Anytun. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#include "syncServer.h"
#include "resolver.h"
#include "log.h"
#include "anytunError.h"
//using asio::ip::tcp;
SyncServer::SyncServer(std::string localaddr, std::string port, ConnectCallback onConnect)
: onConnect_(onConnect)
{
gResolver.resolveTcp(localaddr, port, boost::bind(&SyncServer::onResolve, this, _1), boost::bind(&SyncServer::onResolvError, this, _1));
}
SyncServer::~SyncServer()
{
std::list<AcceptorsElement>::iterator it = acceptors_.begin();
for(; it != acceptors_.end(); ++it) {
/// this might be a needed by a running thread, TODO cleanup
// delete(it->acceptor_);
}
}
void SyncServer::onResolve(SyncTcpConnection::proto::resolver::iterator it)
{
while(it != SyncTcpConnection::proto::resolver::iterator()) {
SyncTcpConnection::proto::endpoint e = *it;
AcceptorsElement acceptor;
acceptor.acceptor_ = new SyncTcpConnection::proto::acceptor(io_service_);
if(!acceptor.acceptor_) {
AnytunError::throwErr() << "memory error";
}
acceptor.acceptor_->open(e.protocol());
#if !defined(_MSC_VER) && !defined(MINGW)
if(e.protocol() == boost::asio::ip::tcp::v6()) {
acceptor.acceptor_->set_option(boost::asio::ip::v6_only(true));
}
#endif
acceptor.acceptor_->set_option(boost::asio::socket_base::reuse_address(true));
acceptor.acceptor_->bind(e);
acceptor.acceptor_->listen();
acceptor.started_ = false;
acceptors_.push_back(acceptor);
cLog.msg(Log::PRIO_NOTICE) << "sync server listening on " << e;
it++;
}
start_accept();
ready_sem_.up();
}
void SyncServer::onResolvError(const std::runtime_error& e)
{
cLog.msg(Log::PRIO_ERROR) << "sync server bind/listen failed: " << e.what();
// TODO: stop daemon??
}
void SyncServer::run()
{
ready_sem_.down();
io_service_.run();
}
void SyncServer::send(std::string message)
{
Lock lock(mutex_);
for(std::list<SyncTcpConnection::pointer>::iterator it = conns_.begin() ; it != conns_.end(); ++it) {
(*it)->Send(message);
}
}
void SyncServer::start_accept()
{
Lock lock(mutex_);
std::list<AcceptorsElement>::iterator it = acceptors_.begin();
for(; it != acceptors_.end(); ++it) {
if(!it->started_) {
SyncTcpConnection::pointer new_connection = SyncTcpConnection::create(it->acceptor_->get_io_service());
conns_.push_back(new_connection);
it->acceptor_->async_accept(new_connection->socket(),
boost::bind(&SyncServer::handle_accept, this, new_connection, boost::asio::placeholders::error, it));
it->started_ = true;
}
}
}
void SyncServer::handle_accept(SyncTcpConnection::pointer new_connection, const boost::system::error_code& error, std::list<AcceptorsElement>::iterator it)
{
if(!error) {
cLog.msg(Log::PRIO_INFO) << "new sync client connected from " << new_connection->socket().remote_endpoint();
new_connection->onConnect = onConnect_;
new_connection->start();
it->started_ = false;
start_accept();
}
}
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