src/tunDevice.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 _TUNDEVICE_H_
  33 #define _TUNDEVICE_H_
  34
  35 #include "buffer.h"
  36 #include "deviceConfig.hpp"
  37 #include "threadUtils.hpp"
  38
  39 class TunDevice
  40 {
  41 public:
  42   TunDevice(std::string dev,std::string dev_type, std::string ifcfg_lp, std::string ifcfg_rnmp);
  43   ~TunDevice();
  44
  45   int read(u_int8_t* buf, u_int32_t len);
  46   int write(u_int8_t* buf, u_int32_t len);
  47
  48   std::string getActualName() { return actual_name_.c_str(); }
  49   device_type_t getType() { return conf_.type_; }
  50   std::string getTypeString()
  51   {
  52     if(fd_ < 0)
  53       return "";
  54
  55     switch(conf_.type_)
  56     {
  57     case TYPE_UNDEF: return "undef"; break;
  58     case TYPE_TUN: return "tun"; break;
  59     case TYPE_TAP: return "tap"; break;
  60     }
  61     return "";
  62   }
  63
  64
  65 private:
  66   void operator=(const TunDevice &src);
  67   TunDevice(const TunDevice &src);
  68
  69   void init_post();
  70   void do_ifconfig();
  71   int fix_return(int ret, size_t pi_length);
  72
  73   int fd_;
  74   DeviceConfig conf_;
  75   bool with_pi_;
  76   std::string actual_name_;
  77 };
  78
  79 #endif