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