src/ovpn/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 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 #ifndef _TUNDEVICE_H_
  32 #define _TUNDEVICE_H_
  33
  34 #include "buffer.h"
  35 #include "threadUtils.hpp"
  36
  37 class TunDevice
  38 {
  39 public:
  40   static const u_int32_t TYPE_UNDEF = 0;
  41   static const u_int32_t TYPE_TUN = 1;
  42   static const u_int32_t TYPE_TAP = 2;
  43
  44   TunDevice(const char* dev,const char* dev_type, const char* ifcfg_lp, const char* ifcfg_rnmp);
  45   ~TunDevice();
  46
  47   void open();
  48   void close();
  49   bool isOpen();
  50
  51   short read(u_int8_t* buf, u_int32_t len);
  52   int write(u_int8_t* buf, u_int32_t len);
  53
  54   char* getActualName();
  55   u_int32_t getType();
  56   const char* getTypeString();
  57
  58 private:
  59   void operator=(const TunDevice &src);
  60   TunDevice(const TunDevice &src);
  61
  62   Mutex io_mutex_;
  63   struct tuntap *dev_;
  64 };
  65
  66 #endif