src/rtpSession.h

   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 #ifndef _RTPSESSION_H_
  33 #define _RTPSESSION_H_
  34
  35 #include <boost/asio.hpp>
  36
  37 #include "threadUtils.hpp"
  38
  39 #include <boost/archive/text_oarchive.hpp>
  40 #include <boost/archive/text_iarchive.hpp>
  41
  42 class RtpSession
  43 {
  44 public:
  45   typedef boost::asio::ip::udp proto;
  46
  47         RtpSession(const std::string& call_id);
  48
  49   bool isDead();
  50   bool isDead(bool d);
  51
  52   bool isComplete();
  53   bool isComplete(bool c);
  54
  55   proto::endpoint getLocalEnd1();
  56   RtpSession& setLocalEnd1(proto::endpoint e);
  57   proto::endpoint getLocalEnd2();
  58   RtpSession& setLocalEnd2(proto::endpoint e);
  59
  60   proto::endpoint getRemoteEnd1();
  61   RtpSession& setRemoteEnd1(proto::endpoint e);
  62   proto::endpoint getRemoteEnd2();
  63   RtpSession& setRemoteEnd2(proto::endpoint e);
  64
  65         RtpSession& setSeen1();
  66   bool getSeen1();
  67
  68         RtpSession& setSeen2();
  69   bool getSeen2();
  70
  71 private:
  72         RtpSession(const RtpSession & src);
  73
  74   void reinit();
  75
  76   //TODO: check if this is ok
  77   friend class boost::serialization::access;
  78   template<class Archive>
  79   void serialize(Archive & ar, const unsigned int version)
  80         {
  81     Lock lock(mutex_);
  82
  83         // address of local_end1 and local_end2 are always equal
  84                 std::string local_addr(local_end1_.address().to_string());
  85                 u_int16_t local_port1 = local_end1_.port();
  86                 u_int16_t local_port2 = local_end2_.port();
  87
  88                 std::string remote_addr1(remote_end1_.address().to_string());
  89                 u_int16_t remote_port1 = remote_end1_.port();
  90                 std::string remote_addr2(remote_end2_.address().to_string());
  91                 u_int16_t remote_port2 = remote_end2_.port();
  92
  93     ar & dead_;
  94     ar & complete_;
  95     ar & local_addr;
  96     ar & local_port1;
  97     ar & local_port2;
  98     ar & remote_addr1;
  99     ar & remote_port1;
 100     ar & remote_addr2;
 101     ar & remote_port2;
 102                 ar & seen1_;
 103                 ar & seen2_;
 104
 105                 proto::endpoint local_end1(boost::asio::ip::address::from_string(local_addr), local_port1);
 106     local_end1_ = local_end1;
 107                 proto::endpoint local_end2(boost::asio::ip::address::from_string(local_addr), local_port2);
 108                 local_end2_ = local_end2;
 109
 110                 proto::endpoint remote_end1(boost::asio::ip::address::from_string(remote_addr1), remote_port1);
 111                 remote_end1_ = remote_end1;
 112                 proto::endpoint remote_end2(boost::asio::ip::address::from_string(remote_addr2), remote_port2);
 113                 remote_end2_ = remote_end2;
 114
 115     if(complete_ && !dead_)
 116       reinit();
 117
 118     in_sync_ = true;
 119         }
 120
 121   bool in_sync_;
 122         ::Mutex mutex_;
 123
 124   const std::string& call_id_;
 125   bool dead_;
 126   bool complete_;
 127   proto::endpoint local_end1_, local_end2_;
 128   proto::endpoint remote_end1_, remote_end2_;
 129         bool seen1_,seen2_; //has at least 1 packet been recieved?
 130 };
 131
 132
 133 #endif