src/plainPacket.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 _PLAIN_PACKET_H_
  33 #define _PLAIN_PACKET_H_
  34
  35 #include "datatypes.h"
  36 #include "buffer.h"
  37
  38 #include "networkAddress.h"
  39
  40 class Cipher;
  41 /**
  42  * plain SATP packet class<br>
  43  * includes payload_type and payload
  44  */
  45
  46 #define PAYLOAD_TYPE_TAP 0x6558
  47 #define PAYLOAD_TYPE_TUN 0x0000
  48 #define PAYLOAD_TYPE_TUN4 0x0800
  49 #define PAYLOAD_TYPE_TUN6 0x86DD
  50
  51 class PlainPacket : public Buffer
  52 {
  53 public:
  54   /**
  55    * Packet constructor
  56    * @param the length of the payload
  57    * @param allow reallocation of buffer
  58    */
  59   PlainPacket(u_int32_t payload_length, bool allow_realloc = false);
  60
  61   /**
  62    * Packet destructor
  63    */
  64   ~PlainPacket() {};
  65
  66   /**
  67    * Get the payload type
  68    * @return the id of the payload type
  69    */
  70   payload_type_t getPayloadType() const;
  71
  72   /**
  73    * Set the payload type
  74    * @param payload_type payload type id
  75    */
  76   void setPayloadType(payload_type_t payload_type);
  77
  78   /**
  79    * Get the length of the payload
  80    * @return the length of the payload
  81    */
  82         u_int32_t getPayloadLength() const;
  83
  84   /**
  85    * Set the length of the payload
  86    * @param length length of the payload
  87    */
  88   void setPayloadLength(u_int32_t payload_length);
  89
  90   /**
  91    * Get the the payload
  92    * @return the Pointer to the payload
  93    */
  94   u_int8_t* getPayload();
  95
  96 //  NetworkAddress getSrcAddr() const;
  97   NetworkAddress getDstAddr() const;
  98
  99 private:
 100   PlainPacket();
 101   PlainPacket(const PlainPacket &src);
 102
 103   void reinit();
 104
 105   payload_type_t* payload_type_;
 106   u_int8_t* payload_;
 107 };
 108
 109 #endif