networkPrefix.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
  34 #include "networkPrefix.h"
  35
  36
  37 NetworkPrefix::NetworkPrefix(): NetworkAddress(),length_(0)
  38 {
  39 }
  40
  41 NetworkPrefix::NetworkPrefix(const NetworkAddress & src,uint8_t length): NetworkAddress(src),length_(length)
  42 {
  43 }
  44
  45 NetworkPrefix::NetworkPrefix(const NetworkPrefix & src): NetworkAddress(src),length_(src.length_)
  46 {
  47 }
  48
  49 void NetworkPrefix::setNetworkPrefixLength(uint8_t length )
  50 {
  51         length_ = length;
  52         if (network_address_type_==ipv4)
  53         {
  54                 in_addr v4addr;
  55                 v4addr.s_addr=0xFFFFFFFF;
  56                 *this &= (NetworkAddress(v4addr)<<(32-length));
  57         } else if (network_address_type_==ipv6) {
  58                 in6_addr v6addr;
  59                 for(int i=0;i<4;i++)
  60                         ipv6_address_.s6_addr32[i]=0xFFFFFFFF;
  61                 *this &= (NetworkAddress(v6addr)<<(128-length));
  62         } else if (network_address_type_==ethernet) {
  63                 //TODO
  64         } else {
  65                 //TODO
  66         }
  67 }
  68
  69 uint8_t NetworkPrefix::getNetworkPrefixLength()
  70 {
  71         return length_;
  72 }
  73
  74
  75 bool NetworkPrefix::operator<(const NetworkPrefix &right) const
  76 {
  77         if (network_address_type_!=right.network_address_type_)
  78                 return false;
  79         if (NetworkAddress::operator<(static_cast<NetworkAddress>(right)))
  80                 return true;
  81         static_cast<NetworkAddress>(right)<static_cast<NetworkAddress>(*this);
  82         return (right.length_<length_);
  83 }
  84