128 lines
3.7 KiB
C
128 lines
3.7 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_substructure transform_substructure
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* @{ @ingroup payloads
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*/
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#ifndef TRANSFORM_SUBSTRUCTURE_H_
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#define TRANSFORM_SUBSTRUCTURE_H_
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typedef struct transform_substructure_t transform_substructure_t;
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#include <library.h>
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#include <encoding/payloads/payload.h>
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#include <encoding/payloads/transform_attribute.h>
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#include <utils/linked_list.h>
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#include <crypto/diffie_hellman.h>
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#include <crypto/signers/signer.h>
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#include <crypto/prfs/prf.h>
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#include <crypto/crypters/crypter.h>
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#include <config/proposal.h>
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/**
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* IKEv1 Value for a transform payload.
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*/
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#define TRANSFORM_TYPE_VALUE 3
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/**
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* Length of the transform substructure header in bytes.
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*/
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#define TRANSFORM_SUBSTRUCTURE_HEADER_LENGTH 8
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/**
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* Class representing an IKEv2- TRANSFORM SUBSTRUCTURE.
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*
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* The TRANSFORM SUBSTRUCTURE format is described in RFC section 3.3.2.
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*/
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struct transform_substructure_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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* Adds a transform_attribute_t object to this object.
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*
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* @param proposal transform_attribute_t object to add
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*/
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void (*add_transform_attribute) (transform_substructure_t *this,
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transform_attribute_t *attribute);
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/**
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* Sets the next_payload field of this substructure
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*
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* If this is the last transform, next payload field is set to 0,
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* otherwise to 3
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*
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* @param is_last When TRUE, next payload field is set to 0, otherwise to 3
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*/
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void (*set_is_last_transform) (transform_substructure_t *this, bool is_last);
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/**
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* get transform type of the current transform.
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*
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* @return Transform type of current transform substructure.
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*/
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u_int8_t (*get_transform_type) (transform_substructure_t *this);
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/**
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* Get transform id of the current transform.
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*
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* @return Transform id of current transform substructure.
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*/
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u_int16_t (*get_transform_id) (transform_substructure_t *this);
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/**
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* Get transform id of the current transform.
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*
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* @param key_length The key length is written to this location
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* @return
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* - SUCCESS if a key length attribute is contained
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* - FAILED if no key length attribute is part of this
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* transform or key length uses more then 16 bit!
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*/
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status_t (*get_key_length) (transform_substructure_t *this,
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u_int16_t *key_length);
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/**
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* Destroys an transform_substructure_t object.
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*/
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void (*destroy) (transform_substructure_t *this);
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};
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/**
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* Creates an empty transform_substructure_t object.
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*
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* @return created transform_substructure_t object
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*/
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transform_substructure_t *transform_substructure_create(void);
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/**
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* Creates an empty transform_substructure_t object.
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*
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* @param type type of transform to create
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* @param id transform id specifc for the transform type
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* @param key_length key length for key length attribute, 0 to omit
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* @return transform_substructure_t object
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*/
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transform_substructure_t *transform_substructure_create_type(
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transform_type_t type, u_int16_t id, u_int16_t key_length);
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#endif /** TRANSFORM_SUBSTRUCTURE_H_ @}*/
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