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/*
* Copyright (C) 2007 Tobias Brunner
* Copyright (C) 2005-2006 Martin Willi
* Copyright (C) 2005 Jan Hutter
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup ike_header ike_header
* @{ @ingroup payloads
*/
#ifndef IKE_HEADER_H_
#define IKE_HEADER_H_
typedef enum exchange_type_t exchange_type_t;
typedef struct ike_header_t ike_header_t;
#include <library.h>
#include <encoding/payloads/payload.h>
/**
* Major Version of IKEv2.
*/
#define IKE_MAJOR_VERSION 2
/**
* Minor Version of IKEv2.
*/
#define IKE_MINOR_VERSION 0
/**
* Flag in IKEv2-Header. Always 0.
*/
#define HIGHER_VERSION_SUPPORTED_FLAG 0
/**
* Length of IKE Header in Bytes.
*/
#define IKE_HEADER_LENGTH 28
/**
* Different types of IKE-Exchanges.
*
* See RFC for different types.
*/
enum exchange_type_t{
/**
* EXCHANGE_TYPE_UNDEFINED. In private space, since not a official message type.
*/
EXCHANGE_TYPE_UNDEFINED = 255,
/**
* IKE_SA_INIT.
*/
IKE_SA_INIT = 34,
/**
* IKE_AUTH.
*/
IKE_AUTH = 35,
/**
* CREATE_CHILD_SA.
*/
CREATE_CHILD_SA = 36,
/**
* INFORMATIONAL.
*/
INFORMATIONAL = 37,
#ifdef ME
/**
* ME_CONNECT
*/
ME_CONNECT = 240
#endif /* ME */
};
/**
* enum name for exchange_type_t
*/
extern enum_name_t *exchange_type_names;
/**
* An object of this type represents an IKEv2 header and is used to
* generate and parse IKEv2 headers.
*
* The header format of an IKEv2-Message is compatible to the
* ISAKMP-Header format to allow implementations supporting
* both versions of the IKE-protocol.
*/
struct ike_header_t {
/**
* The payload_t interface.
*/
payload_t payload_interface;
/**
* Get the initiator spi.
*
* @return initiator_spi
*/
u_int64_t (*get_initiator_spi) (ike_header_t *this);
/**
* Set the initiator spi.
*
* @param initiator_spi initiator_spi
*/
void (*set_initiator_spi) (ike_header_t *this, u_int64_t initiator_spi);
/**
* Get the responder spi.
*
* @return responder_spi
*/
u_int64_t (*get_responder_spi) (ike_header_t *this);
/**
* Set the responder spi.
*
* @param responder_spi responder_spi
*/
void (*set_responder_spi) (ike_header_t *this, u_int64_t responder_spi);
/**
* Get the major version.
*
* @return major version
*/
u_int8_t (*get_maj_version) (ike_header_t *this);
/**
* Set the major version.
*
* @param major major version
*/
void (*set_maj_version) (ike_header_t *this, u_int8_t major);
/**
* Get the minor version.
*
* @return minor version
*/
u_int8_t (*get_min_version) (ike_header_t *this);
/**
* Set the minor version.
*
* @param minor minor version
*/
void (*set_min_version) (ike_header_t *this, u_int8_t minor);
/**
* Get the response flag.
*
* @return response flag
*/
bool (*get_response_flag) (ike_header_t *this);
/**
* Set the response flag-
*
* @param response response flag
*/
void (*set_response_flag) (ike_header_t *this, bool response);
/**
* Get "higher version supported"-flag.
*
* @return version flag
*/
bool (*get_version_flag) (ike_header_t *this);
/**
* Set the "higher version supported"-flag.
*
* @param version flag value
*/
void (*set_version_flag)(ike_header_t *this, bool version);
/**
* Get the initiator flag.
*
* @return initiator flag
*/
bool (*get_initiator_flag) (ike_header_t *this);
/**
* Set the initiator flag.
*
* @param initiator initiator flag
*/
void (*set_initiator_flag) (ike_header_t *this, bool initiator);
/**
* Get the exchange type.
*
* @return exchange type
*/
u_int8_t (*get_exchange_type) (ike_header_t *this);
/**
* Set the exchange type.
*
* @param exchange_type exchange type
*/
void (*set_exchange_type) (ike_header_t *this, u_int8_t exchange_type);
/**
* Get the message id.
*
* @return message id
*/
u_int32_t (*get_message_id) (ike_header_t *this);
/**
* Set the message id.
*
* @param initiator_spi message id
*/
void (*set_message_id) (ike_header_t *this, u_int32_t message_id);
/**
* Destroys a ike_header_t object.
*/
void (*destroy) (ike_header_t *this);
};
/**
* Create an ike_header_t object
*
* @return ike_header_t object
*/
ike_header_t *ike_header_create(void);
#endif /** IKE_HEADER_H_ @}*/
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