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/**
* @file proposal_substructure.h
*
* @brief Interface of proposal_substructure_t.
*
*/
/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* 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.
*/
#ifndef PROPOSAL_SUBSTRUCTURE_H_
#define PROPOSAL_SUBSTRUCTURE_H_
#include <types.h>
#include <encoding/payloads/payload.h>
#include <encoding/payloads/transform_substructure.h>
#include <utils/linked_list.h>
/**
* IKEv1 Value for a proposal payload.
*
* @ingroup payloads
*/
#define PROPOSAL_TYPE_VALUE 2
/**
* Length of the proposal substructure header
* (without spi).
*
* @ingroup payloads
*/
#define PROPOSAL_SUBSTRUCTURE_HEADER_LENGTH 8
typedef enum protocol_id_t protocol_id_t;
/**
* Protocol ID of a proposal.
*
* @ingroup payloads
*/
enum protocol_id_t {
UNDEFINED_PROTOCOL_ID = 201,
IKE = 1,
AH = 2,
ESP = 3,
};
/**
* String mappings for protocol_id_t.
*/
extern mapping_t protocol_id_m[];
typedef struct proposal_substructure_t proposal_substructure_t;
/**
* Object representing an IKEv2-PROPOSAL SUBSTRUCTURE.
*
* The PROPOSAL SUBSTRUCTURE format is described in RFC section 3.3.1.
*
* @ingroup payloads
*/
struct proposal_substructure_t {
/**
* The payload_t interface.
*/
payload_t payload_interface;
/**
* @brief Creates an iterator of stored transform_substructure_t objects.
*
* @warning The created iterator has to get destroyed by the caller!
* When deleting any transform over this iterator, call
* get_size to make sure the length and number values are ok.
*
* @param this calling proposal_substructure_t object
* @param[in] forward iterator direction (TRUE: front to end)
* @return created iterator_t object
*/
iterator_t * (*create_transform_substructure_iterator) (proposal_substructure_t *this, bool forward);
/**
* @brief Adds a transform_substructure_t object to this object.
*
* @warning The added transform_substructure_t object is
* getting destroyed in destroy function of proposal_substructure_t.
*
* @param this calling proposal_substructure_t object
* @param transform transform_substructure_t object to add
*/
void (*add_transform_substructure) (proposal_substructure_t *this,transform_substructure_t *transform);
/**
* @brief Sets the proposal number of current proposal.
*
* @param this calling proposal_substructure_t object
* @param id proposal number to set
*/
void (*set_proposal_number) (proposal_substructure_t *this,u_int8_t proposal_number);
/**
* @brief get proposal number of current proposal.
*
* @param this calling proposal_substructure_t object
* @return proposal number of current proposal substructure.
*/
u_int8_t (*get_proposal_number) (proposal_substructure_t *this);
/**
* @brief get the number of transforms in current proposal.
*
* @param this calling proposal_substructure_t object
* @return transform count in current proposal
*/
size_t (*get_transform_count) (proposal_substructure_t *this);
/**
* @brief get size of the set spi in bytes.
*
* @param this calling proposal_substructure_t object
* @return size of the spi in bytes
*/
size_t (*get_spi_size) (proposal_substructure_t *this);
/**
* @brief Sets the protocol id of current proposal.
*
* @param this calling proposal_substructure_t object
* @param id protocol id to set
*/
void (*set_protocol_id) (proposal_substructure_t *this,u_int8_t protocol_id);
/**
* @brief get protocol id of current proposal.
*
* @param this calling proposal_substructure_t object
* @return protocol id of current proposal substructure.
*/
u_int8_t (*get_protocol_id) (proposal_substructure_t *this);
/**
* @brief Get informations for a specific transform type.
*
* @param this calling proposal_substructure_t object
* @param type type to get informations for
* @param transform_id transform id of the specific type
* @param key_length key length of the specific key length transform attribute
* @return
* - SUCCESS if transform type is part of this proposal and
* all data (incl. key length) could be fetched
* - NOT_FOUND if transform type is not part of this proposal
*/
status_t (*get_info_for_transform_type) (proposal_substructure_t *this,transform_type_t type, u_int16_t *transform_id, u_int16_t *key_length);
/**
* @brief Sets the next_payload field of this substructure
*
* If this is the last proposal, next payload field is set to 0,
* otherwise to 2
*
* @param this calling proposal_substructure_t object
* @param is_last When TRUE, next payload field is set to 0, otherwise to 2
*/
void (*set_is_last_proposal) (proposal_substructure_t *this, bool is_last);
/**
* @brief Returns the currently set SPI of this proposal.
*
* @warning Returned data are not copied
*
* @param this calling proposal_substructure_t object
* @return chunk_t pointing to the value
*/
chunk_t (*get_spi) (proposal_substructure_t *this);
/**
* @brief Sets the SPI of the current proposal.
*
* @warning SPI is getting copied
*
* @param this calling proposal_substructure_t object
* @param spi chunk_t pointing to the value to set
*/
void (*set_spi) (proposal_substructure_t *this, chunk_t spi);
/**
* @brief Clones an proposal_substructure_t object.
*
* @param this proposal_substructure_t object to clone
* @return cloned object
*/
proposal_substructure_t* (*clone) (proposal_substructure_t *this);
/**
* @brief Destroys an proposal_substructure_t object.
*
* @param this proposal_substructure_t object to destroy
*/
void (*destroy) (proposal_substructure_t *this);
};
/**
* @brief Creates an empty proposal_substructure_t object
*
* @return created proposal_substructure_t object
*
* @ingroup payloads
*/
proposal_substructure_t *proposal_substructure_create();
#endif /*PROPOSAL_SUBSTRUCTURE_H_*/
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