src/packetSource.cpp

   1 /*
   2  *  anytun
   3  *
   4  *  The secure anycast tunneling protocol (satp) defines a protocol used
   5  *  for communication between any combination of unicast and anycast
   6  *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
   7  *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
   8  *  ethernet, ip, arp ...). satp directly includes cryptography and
   9  *  message authentication based on the methodes used by SRTP.  It is
  10  *  intended to deliver a generic, scaleable and secure solution for
  11  *  tunneling and relaying of packets of any protocol.
  12  *
  13  *
  14  *  Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl,
  15  *                          Christian Pointner <satp@wirdorange.org>
  16  *
  17  *  This file is part of Anytun.
  18  *
  19  *  Anytun is free software: you can redistribute it and/or modify
  20  *  it under the terms of the GNU General Public License version 3 as
  21  *  published by the Free Software Foundation.
  22  *
  23  *  Anytun is distributed in the hope that it will be useful,
  24  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  *  GNU General Public License for more details.
  27  *
  28  *  You should have received a copy of the GNU General Public License
  29  *  along with anytun.  If not, see <http://www.gnu.org/licenses/>.
  30  */
  31
  32 #include <boost/asio.hpp>
  33
  34 #include "datatypes.h"
  35
  36 #include "packetSource.h"
  37 #include "buffer.h"
  38
  39 UDPPacketSource::UDPPacketSource(std::string port) : sock_(io_service_)
  40 {
  41   boost::asio::ip::udp::resolver resolver(io_service_);
  42   boost::asio::ip::udp::resolver::query query(port);
  43   boost::asio::ip::udp::endpoint e = *resolver.resolve(query);
  44   sock_.open(e.protocol());
  45   sock_.bind(e);
  46 }
  47
  48 UDPPacketSource::UDPPacketSource(std::string localaddr, std::string port) : sock_(io_service_)
  49 {
  50   boost::asio::ip::udp::resolver resolver(io_service_);
  51   boost::asio::ip::udp::resolver::query query(localaddr, port);
  52   boost::asio::ip::udp::endpoint e = *resolver.resolve(query);
  53   sock_.open(e.protocol());
  54   sock_.bind(e);
  55 }
  56
  57 u_int32_t UDPPacketSource::recv(u_int8_t* buf, u_int32_t len, PacketSourceEndpoint& remote)
  58 {
  59   return sock_.receive_from(boost::asio::buffer(buf, len), remote);
  60 }
  61
  62 void UDPPacketSource::send(u_int8_t* buf, u_int32_t len, PacketSourceEndpoint remote)
  63 {
  64   sock_.send_to(boost::asio::buffer(buf, len), remote);
  65 }