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/*
* 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 transform_attribute transform_attribute
* @{ @ingroup payloads
*/
#ifndef TRANSFORM_ATTRIBUTE_H_
#define TRANSFORM_ATTRIBUTE_H_
typedef enum transform_attribute_type_t transform_attribute_type_t;
typedef struct transform_attribute_t transform_attribute_t;
#include <library.h>
#include <encoding/payloads/payload.h>
/**
* Type of the attribute.
*/
enum transform_attribute_type_t {
/** IKEv1 Phase 1 attributes */
TATTR_PH1_ENCRYPTION_ALGORITHM = 1,
TATTR_PH1_HASH_ALGORITHM = 2,
TATTR_PH1_AUTH_METHOD = 3,
TATTR_PH1_GROUP = 4,
TATTR_PH1_GROUP_TYPE = 5,
TATTR_PH1_GROUP_PRIME = 6,
TATTR_PH1_GROUP_GENONE = 7,
TATTR_PH1_GROUP_GENTWO = 8,
TATTR_PH1_GROUP_CURVE_A = 9,
TATTR_PH1_GROUP_CURVE_B = 10,
TATTR_PH1_LIFE_TYPE = 11,
TATTR_PH1_LIFE_DURATION = 12,
TATTR_PH1_PRF = 13,
TATTR_PH1_KEY_LENGTH = 14,
TATTR_PH1_FIELD_SIZE = 15,
TATTR_PH1_GROUP_ORDER = 16,
/** IKEv1 Phase 2 attributes */
TATTR_PH2_SA_LIFE_TYPE = 1,
TATTR_PH2_SA_LIFE_DURATION = 2,
TATTR_PH2_GROUP = 3,
TATTR_PH2_ENCAP_MODE = 4,
TATTR_PH2_AUTH_ALGORITHM = 5,
TATTR_PH2_KEY_LENGTH = 6,
TATTR_PH2_KEY_ROUNDS = 7,
TATTR_PH2_COMP_DICT_SIZE = 8,
TATTR_PH2_COMP_PRIV_ALGORITHM = 9,
TATTR_PH2_ECN_TUNNEL = 10,
TATTR_PH2_EXT_SEQ_NUMBER = 11,
/* IKEv2 key length attribute */
TATTR_IKEV2_KEY_LENGTH = 14,
/* undefined, private use attribute */
TATTR_UNDEFINED = 16384,
};
/**
* Enum names for IKEv1 Phase 1 transform_attribute_type_t.
*/
extern enum_name_t *tattr_ph1_names;
/**
* Enum names for IKEv1 Phase 2 transform_attribute_type_t.
*/
extern enum_name_t *tattr_ph2_names;
/**
* Enum names for IKEv2 transform_attribute_type_t.
*/
extern enum_name_t *tattr_ikev2_names;
/**
* Class representing an IKEv1/IKEv2 TRANSFORM Attribute.
*/
struct transform_attribute_t {
/**
* The payload_t interface.
*/
payload_t payload_interface;
/**
* Returns the currently set value of the attribute.
*
* Returned data are not copied.
*
* @return chunk_t pointing to the value
*/
chunk_t (*get_value_chunk) (transform_attribute_t *this);
/**
* Returns the currently set value of the attribute.
*
* Returned data are not copied.
*
* @return value
*/
u_int16_t (*get_value) (transform_attribute_t *this);
/**
* Sets the value of the attribute.
*
* Value is getting copied.
*
* @param value chunk_t pointing to the value to set
*/
void (*set_value_chunk) (transform_attribute_t *this, chunk_t value);
/**
* Sets the value of the attribute.
*
* @param value value to set
*/
void (*set_value) (transform_attribute_t *this, u_int16_t value);
/**
* Sets the type of the attribute.
*
* @param type type to set (most significant bit is set to zero)
*/
void (*set_attribute_type) (transform_attribute_t *this, u_int16_t type);
/**
* get the type of the attribute.
*
* @return type of the value
*/
u_int16_t (*get_attribute_type) (transform_attribute_t *this);
/**
* Clones an transform_attribute_t object.
*
* @return cloned transform_attribute_t object
*/
transform_attribute_t * (*clone) (transform_attribute_t *this);
/**
* Destroys an transform_attribute_t object.
*/
void (*destroy) (transform_attribute_t *this);
};
/**
* Creates an empty transform_attribute_t object.
*
* @param type TRANSFORM_ATTRIBUTE or TRANSFORM_ATTRIBUTE_V1
* @return transform_attribute_t object
*/
transform_attribute_t *transform_attribute_create(payload_type_t type);
/**
* Creates a two byte value or a larger attribute for a given attribute kind.
*
* @param type TRANSFORM_ATTRIBUTE or TRANSFORM_ATTRIBUTE_V1
* @param kind attribute kind
* @param value fixed two byte value
* @return transform_attribute_t object
*/
transform_attribute_t *transform_attribute_create_value(payload_type_t type,
transform_attribute_type_t kind, u_int64_t value);
#endif /** TRANSFORM_ATTRIBUTE_H_ @}*/
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