147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/*
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* Copyright (C) 2005-2006 Martin Willi
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* Copyright (C) 2005 Jan Hutter
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup transform_attribute transform_attribute
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* @{ @ingroup payloads
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*/
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#ifndef TRANSFORM_ATTRIBUTE_H_
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#define TRANSFORM_ATTRIBUTE_H_
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typedef enum transform_attribute_type_t transform_attribute_type_t;
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typedef struct transform_attribute_t transform_attribute_t;
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#include <library.h>
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#include <encoding/payloads/payload.h>
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/**
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* Type of the attribute.
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*/
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enum transform_attribute_type_t {
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/** IKEv1 Phase 1 attributes */
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TATTR_PH1_ENCRYPTION_ALGORITHM = 1,
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TATTR_PH1_HASH_ALGORITHM = 2,
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TATTR_PH1_AUTH_METHOD = 3,
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TATTR_PH1_GROUP = 4,
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TATTR_PH1_GROUP_TYPE = 5,
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TATTR_PH1_GROUP_PRIME = 6,
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TATTR_PH1_GROUP_GENONE = 7,
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TATTR_PH1_GROUP_GENTWO = 8,
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TATTR_PH1_GROUP_CURVE_A = 9,
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TATTR_PH1_GROUP_CURVE_B = 10,
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TATTR_PH1_LIFE_TYPE = 11,
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TATTR_PH1_LIFE_DURATION = 12,
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TATTR_PH1_PRF = 13,
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TATTR_PH1_KEY_LENGTH = 14,
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TATTR_PH1_FIELD_SIZE = 15,
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TATTR_PH1_GROUP_ORDER = 16,
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/** IKEv1 Phase 2 attributes */
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TATTR_PH2_SA_LIFE_TYPE = 1,
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TATTR_PH2_SA_LIFE_DURATION = 2,
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TATTR_PH2_GROUP = 3,
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TATTR_PH2_ENCAP_MODE = 4,
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TATTR_PH2_AUTH_ALGORITHM = 5,
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TATTR_PH2_KEY_LENGTH = 6,
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TATTR_PH2_KEY_ROUNDS = 7,
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TATTR_PH2_COMP_DICT_SIZE = 8,
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TATTR_PH2_COMP_PRIV_ALGORITHM = 9,
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TATTR_PH2_ECN_TUNNEL = 10,
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TATTR_PH2_EXT_SEQ_NUMBER = 11,
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/* IKEv2 key length attribute */
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TATTR_IKEV2_KEY_LENGTH = 14,
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/* undefined, private use attribute */
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TATTR_UNDEFINED = 16384,
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};
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/**
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* Enum names for IKEv1 Phase 1 transform_attribute_type_t.
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*/
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extern enum_name_t *tattr_ph1_names;
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/**
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* Enum names for IKEv1 Phase 2 transform_attribute_type_t.
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*/
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extern enum_name_t *tattr_ph2_names;
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/**
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* Enum names for IKEv2 transform_attribute_type_t.
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*/
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extern enum_name_t *tattr_ikev2_names;
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/**
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* Class representing an IKEv1/IKEv2 TRANSFORM Attribute.
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*/
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struct transform_attribute_t {
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/**
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* The payload_t interface.
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*/
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payload_t payload_interface;
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/**
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* Returns the currently set value of the attribute.
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*
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* Returned data are not copied.
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*
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* @return chunk_t pointing to internal value
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*/
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chunk_t (*get_value_chunk) (transform_attribute_t *this);
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/**
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* Returns the currently set value of the attribute.
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*
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* Returned data are not copied.
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*
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* @return value
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*/
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uint64_t (*get_value) (transform_attribute_t *this);
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/**
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* get the type of the attribute.
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*
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* @return type of the value
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*/
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uint16_t (*get_attribute_type) (transform_attribute_t *this);
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/**
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* Destroys an transform_attribute_t object.
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*/
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void (*destroy) (transform_attribute_t *this);
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};
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/**
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* Creates an empty transform_attribute_t object.
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*
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* @param type PLV2_TRANSFORM_ATTRIBUTE or PLV1_TRANSFORM_ATTRIBUTE
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* @return transform_attribute_t object
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*/
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transform_attribute_t *transform_attribute_create(payload_type_t type);
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/**
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* Creates a two byte value or a larger attribute for a given attribute kind.
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*
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* @param type PLV2_TRANSFORM_ATTRIBUTE or PLV1_TRANSFORM_ATTRIBUTE
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* @param kind attribute kind
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* @param value fixed two byte value
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* @return transform_attribute_t object
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*/
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transform_attribute_t *transform_attribute_create_value(payload_type_t type,
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transform_attribute_type_t kind, uint64_t value);
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#endif /** TRANSFORM_ATTRIBUTE_H_ @}*/
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