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/**
* @file payload.h
*
* @brief Generic payload interface.
*
*
*/
/*
* 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 PAYLOAD_H_
#define PAYLOAD_H_
#include <types.h>
#include <definitions.h>
#include <encoding/payloads/encodings.h>
typedef enum payload_type_t payload_type_t;
/**
* Payload-Types of a IKEv2-Message.
*
*
* Header and substructures are also defined as
* payload types with values from PRIVATE USE space.
*
* @ingroup payloads
*/
enum payload_type_t{
/**
* NO_PAYLOAD
*/
NO_PAYLOAD = 0,
/**
* SA
*/
SECURITY_ASSOCIATION = 33,
/**
* KE
*/
KEY_EXCHANGE = 34,
/**
* IDi
*/
ID_INITIATOR = 35,
/**
* IDr
*/
ID_RESPONDER = 36,
/**
* CERT
*/
CERTIFICATE = 37,
/**
* CERTREQ
*/
CERTIFICATE_REQUEST = 38,
/**
* AUTH
*/
AUTHENTICATION = 39,
/**
* Ni, Nr
*/
NONCE = 40,
/**
* N
*/
NOTIFY = 41,
/**
* D
*/
DELETE = 42,
/**
* V
*/
VENDOR_ID = 43,
/**
* TSi
*/
TRAFFIC_SELECTOR_INITIATOR = 44,
/**
* TSr
*/
TRAFFIC_SELECTOR_RESPONDER = 45,
/**
* E
*/
ENCRYPTED = 46,
/**
* CP
*/
CONFIGURATION = 47,
/**
* EAP
*/
EXTENSIBLE_AUTHENTICATION = 48,
/**
* Header has a value of PRIVATE USE space.
*
* This payload type is not send over wire and just
* used internally to handle IKEv2-Header like a payload.
*/
HEADER = 140,
/**
* PROPOSAL_SUBSTRUCTURE has a value of PRIVATE USE space.
*
* This payload type is not send over wire and just
* used internally to handle a proposal substructure like a payload.
*/
PROPOSAL_SUBSTRUCTURE = 141,
/**
* TRANSFORM_SUBSTRUCTURE has a value of PRIVATE USE space.
*
* This payload type is not send over wire and just
* used internally to handle a transform substructure like a payload.
*/
TRANSFORM_SUBSTRUCTURE = 142,
/**
* TRANSFORM_ATTRIBUTE has a value of PRIVATE USE space.
*
* This payload type is not send over wire and just
* used internally to handle a transform attribute like a payload.
*/
TRANSFORM_ATTRIBUTE = 143,
};
/*
* Build string mapping array for payload_type_t.
*/
extern mapping_t payload_type_m[];
typedef struct payload_t payload_t;
/**
* @brief Generic interface for all payload types (inclusive
* header and substructures).
*
* @ingroup payloads
*/
struct payload_t {
/**
* @brief Destroys a payload and all included substructures.
*
* @param this payload to destroy
*/
void (*destroy) (payload_t *this);
/**
* @brief Get encoding rules for this payload
*
* @param this calling object
* @param[out] rules location to store pointer of first rule
* @param[out] rule_count location to store number of rules
*/
void (*get_encoding_rules) (payload_t *this, encoding_rule_t **rules, size_t *rule_count);
/**
* @brief get type of payload
*
* @param this calling object
* @return type of this payload
*/
payload_type_t (*get_type) (payload_t *this);
/**
* @brief get type of next payload or zero if this is the last one
*
* @param this calling object
* @return type of next payload
*/
payload_type_t (*get_next_type) (payload_t *this);
/**
* @brief set type of next payload
*
* @param this calling object
* @param type type of next payload
*/
void (*set_next_type) (payload_t *this,payload_type_t type);
/**
* @brief get length of payload
*
* @param this calling object
* @return length of this payload
*/
size_t (*get_length) (payload_t *this);
/**
* @brief Verifies payload structure and makes consistence check
*
* @param this calling object
* @return
* - SUCCESS
* - FAILED if consistence not given
*/
status_t (*verify) (payload_t *this);
};
/**
* @brief Create an empty payload.
*
* Useful for the parser, who wants a generic constructor for all payloads.
* It supports all payload_t methods.
*
* @param type type of the payload to create
* @return created payload
*/
payload_t *payload_create(payload_type_t type);
#endif /*PAYLOAD_H_*/
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