Source/charon/encodings/ike_header.h

   1 /**
   2  * @file ike_header.h
   3  *
   4  * @brief Declaration of the data struct ike_header_t.
   5  *
   6  * The data of a parsed header are stored in a struct of this type.
   7  *
   8  */
   9
  10 /*
  11  * Copyright (C) 2005 Jan Hutter, Martin Willi
  12  * Hochschule fuer Technik Rapperswil
  13  *
  14  * This program is free software; you can redistribute it and/or modify it
  15  * under the terms of the GNU General Public License as published by the
  16  * Free Software Foundation; either version 2 of the License, or (at your
  17  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  18  *
  19  * This program is distributed in the hope that it will be useful, but
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  21  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  22  * for more details.
  23  */
  24
  25 #ifndef IKE_HEADER_H_
  26 #define IKE_HEADER_H_
  27
  28 #include <freeswan.h>
  29 #include <pluto/constants.h>
  30 #include <pluto/defs.h>
  31
  32 /**
  33  * Data structure to hold the data of an IKEv2-Header
  34  *
  35  * The header format of an IKEv2-Message is compatible to the
  36  * ISAKMP-Header format to allow implementations supporting
  37  * both versions of the IKE-protocol.
  38  *
  39  */
  40 typedef struct ike_header_s ike_header_t;
  41
  42 struct ike_header_s{
  43         /**
  44          * SPI of the initiator
  45          */
  46         u_int64_t initiator_spi;
  47         /**
  48          * SPI of the responder
  49          */
  50         u_int64_t responder_spi;
  51         /**
  52          * next payload type
  53          */
  54         u_int8_t  next_payload;
  55         /**
  56          * IKE major version
  57          */
  58         u_int8_t  maj_version;
  59
  60         /**
  61          * IKE minor version
  62          */
  63         u_int8_t  min_version;
  64
  65         /**
  66          * Exchange type
  67          */
  68         u_int8_t  exchange_type;
  69
  70         /**
  71          * Flags of the Message
  72          *
  73          */
  74         struct {
  75                 /**
  76                  * Sender is initiator of the associated IKE_SA_INIT-Exchange
  77                  */
  78                 bool initiator;
  79                 /**
  80                  * is protocol supporting higher version?
  81                  */
  82                 bool version;
  83                 /**
  84                  * TRUE, if this is a response, FALSE if its a Request
  85                  */
  86                 bool response;
  87         } flags;
  88         /**
  89          * Associated Message-ID
  90          */
  91         u_int32_t message_id;
  92         /**
  93          * Length of the whole IKEv2-Message (header and all payloads)
  94          */
  95         u_int32_t length;
  96 };
  97
  98 #endif /*IKE_HEADER_H_*/