connectionList.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 "threadUtils.hpp"
  32 #include "datatypes.h"
  33 #include "keyDerivationFactory.h"
  34 #include "options.h"
  35
  36 #include "connectionList.h"
  37
  38 ConnectionList::ConnectionList()
  39 {
  40 }
  41
  42 ConnectionList::~ConnectionList()
  43 {
  44 /*  Lock lock(mutex_);
  45         ConnectionMap::iterator it;
  46         for(it = connections_.begin(); it != connections_.end(); ++it)
  47         {
  48                 //delete &it->second.kd_;
  49         }
  50 */
  51 }
  52
  53 void ConnectionList::addConnection(ConnectionParam &conn, u_int16_t mux )
  54 {
  55   Lock lock(mutex_);
  56
  57   std::pair<ConnectionMap::iterator, bool> ret = connections_.insert(ConnectionMap::value_type(mux, conn));
  58   if(!ret.second)
  59   {
  60     connections_.erase(ret.first);
  61     connections_.insert(ConnectionMap::value_type(mux, conn));
  62   }
  63 }
  64
  65 const ConnectionMap::iterator ConnectionList::getEnd()
  66 {
  67         return connections_.end();
  68 }
  69
  70 ConnectionMap::iterator ConnectionList::getBeginUnlocked()
  71 {
  72   return connections_.begin();
  73 }
  74
  75 ConnectionMap::iterator ConnectionList::getEndUnlocked()
  76 {
  77   return connections_.end();
  78 }
  79
  80 const ConnectionMap::iterator ConnectionList::getConnection(u_int16_t mux)
  81 {
  82         Lock lock(mutex_);
  83         ConnectionMap::iterator it = connections_.find(mux);
  84         return it;
  85 }
  86
  87
  88 ConnectionParam & ConnectionList::getOrNewConnectionUnlocked(u_int16_t mux)
  89 {
  90         ConnectionMap::iterator it = connections_.find(mux);
  91         if(it!=connections_.end())
  92                 return it->second;
  93
  94   uint8_t key[] = {
  95   'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
  96   'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p'
  97   };
  98
  99   uint8_t salt[] = {
 100   'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
 101   'i', 'j', 'k', 'l', 'm', 'n'
 102   };
 103
 104   SeqWindow * seq= new SeqWindow(0);
 105   seq_nr_t seq_nr_=0;
 106   KeyDerivation * kd = KeyDerivationFactory::create(gOpt.getKdPrf());
 107   kd->init(Buffer(key, sizeof(key)), Buffer(salt, sizeof(salt)));
 108   ConnectionParam conn ( (*kd),  (*seq), seq_nr_, "",  0);
 109         connections_.insert(ConnectionMap::value_type(mux, conn));
 110         it = connections_.find(mux);
 111         return it->second;
 112 }
 113
 114 void ConnectionList::clear()
 115 {
 116   Lock lock(mutex_);
 117         connections_.clear();
 118 }
 119
 120 bool ConnectionList::empty()
 121 {
 122   Lock lock(mutex_);
 123         return connections_.empty();
 124 }
 125
 126 Mutex& ConnectionList::getMutex()
 127 {
 128   return mutex_;
 129 }