anyctr.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 anytun.org <satp@wirdorange.org>
  15  *
  16  *  This program is free software; you can redistribute it and/or modify
  17  *  it under the terms of the GNU General Public License version 2
  18  *  as published by the Free Software Foundation.
  19  *
  20  *  This program is distributed in the hope that it will be useful,
  21  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  *  GNU General Public License for more details.
  24  *
  25  *  You should have received a copy of the GNU General Public License
  26  *  along with this program (see the file COPYING included with this
  27  *  distribution); if not, write to the Free Software Foundation, Inc.,
  28  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  29  */
  30
  31 #include <iostream>
  32 #include <poll.h>
  33
  34 #include <gcrypt.h>
  35 #include <cerrno>     // for ENOMEM
  36
  37 #include "datatypes.h"
  38
  39 #include "log.h"
  40 #include "buffer.h"
  41 #include "plainPacket.h"
  42 #include "encryptedPacket.h"
  43 #include "cipher.h"
  44 #include "keyDerivation.h"
  45 #include "authAlgo.h"
  46 #include "authTag.h"
  47 #include "cipherFactory.h"
  48 #include "authAlgoFactory.h"
  49 #include "keyDerivationFactory.h"
  50 #include "signalController.h"
  51 #include "packetSource.h"
  52 #include "tunDevice.h"
  53 #include "options.h"
  54 #include "seqWindow.h"
  55 #include "connectionList.h"
  56 #include "routingTable.h"
  57 #include "networkAddress.h"
  58
  59 #include "syncQueue.h"
  60 #include "syncSocketHandler.h"
  61 #include "syncListenSocket.h"
  62
  63 #include "syncSocket.h"
  64 #include "syncClientSocket.h"
  65 #include "syncCommand.h"
  66
  67 #include "threadParam.h"
  68
  69 #define MAX_PACKET_LENGTH 1600
  70
  71 #define SESSION_KEYLEN_AUTH 20   // TODO: hardcoded size
  72 #define SESSION_KEYLEN_ENCR 16   // TODO: hardcoded size
  73 #define SESSION_KEYLEN_SALT 14   // TODO: hardcoded size
  74
  75 void createConnection(const std::string & remote_host, u_int16_t remote_port, ConnectionList & cl, u_int16_t seqSize, SyncQueue & queue, mux_t mux)
  76 {
  77   SeqWindow * seq= new SeqWindow(seqSize);
  78   seq_nr_t seq_nr_=0;
  79   KeyDerivation * kd = KeyDerivationFactory::create(gOpt.getKdPrf());
  80   kd->init(gOpt.getKey(), gOpt.getSalt());
  81   cLog.msg(Log::PRIO_NOTICE) << "added connection remote host " << remote_host << ":" << remote_port;
  82   ConnectionParam connparam ( (*kd),  (*seq), seq_nr_, remote_host,  remote_port);
  83   cl.addConnection(connparam,mux);
  84   NetworkAddress addr(ipv4,gOpt.getIfconfigParamRemoteNetmask().c_str());
  85   NetworkPrefix prefix(addr);
  86   gRoutingTable.addRoute(prefix,mux);
  87   std::ostringstream sout;
  88   boost::archive::text_oarchive oa(sout);
  89   const SyncCommand scom(cl,mux);
  90   const SyncCommand scom2 (prefix);
  91   oa << scom;
  92   std::cout << sout.str() << std::endl;
  93         std::ostringstream sout2;
  94         boost::archive::text_oarchive oa2(sout2);
  95   oa2 << scom2;
  96   std::cout << sout2.str() << std::endl;
  97 }
  98
  99 int main(int argc, char* argv[])
 100 {
 101   int ret=0;
 102   if(!gOpt.parse(argc, argv))
 103   {
 104     gOpt.printUsage();
 105     exit(-1);
 106   }
 107
 108   SignalController sig;
 109   sig.init();
 110
 111         ConnectionList cl;
 112         SyncQueue queue;
 113
 114         if(gOpt.getRemoteAddr() != "")
 115         {
 116                 createConnection(gOpt.getRemoteAddr(),gOpt.getRemotePort(),cl,gOpt.getSeqWindowSize(), queue, gOpt.getMux());
 117
 118         }
 119
 120   return ret;
 121 }
 122