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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 methodes 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) 2007-2008 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 version 3 as
 *  published by the Free Software Foundation.
 *
 *  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/>.
 */

#include "syncServer.h"
#include "resolver.h"
#include "log.h"

//using asio::ip::tcp;

SyncServer::SyncServer(std::string localaddr, std::string port, ConnectCallback onConnect) 
  : acceptor_(io_service_), onConnect_(onConnect)
{
  gResolver.resolveTcp(localaddr, port, boost::bind(&SyncServer::onResolve, this, _1), boost::bind(&SyncServer::onResolvError, this, _1));
}

void SyncServer::onResolve(const SyncTcpConnection::proto::endpoint& e)
{
  acceptor_.open(e.protocol());
  acceptor_.set_option(boost::asio::socket_base::reuse_address(true));
  acceptor_.bind(e);
  acceptor_.listen();
  start_accept();
  ready_sem_.up();
  cLog.msg(Log::PRIO_NOTICE) << "sync server listening on " << e;
}

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_);
  SyncTcpConnection::pointer new_connection = SyncTcpConnection::create(acceptor_.io_service());
  conns_.push_back(new_connection);
  acceptor_.async_accept(new_connection->socket(),
                         boost::bind(&SyncServer::handle_accept, this, new_connection, boost::asio::placeholders::error));
}

void SyncServer::handle_accept(SyncTcpConnection::pointer new_connection, const boost::system::error_code& error)
{
  if (!error) {
    new_connection->onConnect = onConnect_;
    new_connection->start();
    start_accept();
  }
}