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 class Cypher;
  38 /**
  39  * plain SATP packet class<br>
  40  * includes payload_type and payload
  41  */
  42
  43 class PlainPacket : public Buffer
  44 {
  45 public:
  46   ~PlainPacket();
  47
  48   /**
  49    * Packet constructor
  50    * @param max_payload_length maximum payload length
  51    */
  52   PlainPacket(u_int32_t max_payload_length);
  53
  54   /**
  55    * Get the payload type
  56    * @return the id of the payload type
  57    */
  58   payload_type_t getPayloadType() const;
  59
  60   /**
  61    * Set the payload type
  62    * @param payload_type payload type id
  63    */
  64   void setPayloadType(payload_type_t payload_type);
  65
  66         void setCompletePayloadLength(u_int32_t payload_length);
  67
  68   /**
  69    * Set the real payload length
  70    * @param length the real payload length
  71    */
  72   //void setRealPayloadLengt(u_int32_t length);
  73
  74   /**
  75    * Get the real payload length
  76    * @return the real length of the payload
  77    */
  78   //u_int32_t getRealPayloadLength();
  79
  80   /**
  81    * Set the length of the payload
  82    * @param length length of the payload
  83    */
  84   void setLength(u_int32_t length);
  85
  86   /**
  87    * Get the size of the allocated memory for the payload
  88    * @return maximum size of payload
  89    */
  90   u_int32_t getMaxLength() const;
  91
  92 private:
  93   PlainPacket();
  94   PlainPacket(const PlainPacket &src);
  95         void splitPayload();
  96   u_int32_t max_length_;
  97   payload_type_t* payload_type_;
  98 protected:
  99         friend class Cypher;
 100         u_int8_t * complete_payload_;
 101         u_int32_t complete_payload_length_;
 102 };
 103
 104 #endif