89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/**
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* @file parser.h
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*
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* @brief Generic parser class used to parse IKEv2-Header and Payload
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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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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#ifndef PARSER_H_
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#define PARSER_H_
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#include <types.h>
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#include <encoding/payloads/encodings.h>
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#include <encoding/payloads/payload.h>
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typedef struct parser_t parser_t;
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/**
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* @brief A parser_t object which parses payloads
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*
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* A parser is used for parsing one chunk of data. Multiple
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* payloads can be parsed out of the chunk using parse_payload.
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* The parser remains the state until destroyed.
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*/
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struct parser_t {
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/**
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* @brief parses the next payload
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*
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* @warning caller is responsible for freeing allocated payload
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*
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* Rules for parsing are described in the payload definition.
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*
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* @param this parser Object
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* @param payload_type payload type to parse
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* @param[out] payload pointer where parsed payload was allocated
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* @return
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* - SUCCESSFUL if succeeded,
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* - NOT_SUPPORTED if payload_type is not supported
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* - OUT_OF_RES if out of ressources
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* - PARSE_ERROR if corrupted/invalid data found
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*/
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status_t (*parse_payload) (parser_t *this, payload_type_t payload_type, payload_t **payload);
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/**
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* @brief Resets the current parser context
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*
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* @param parser parser object
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* @return
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* - SUCCESSFUL in any case
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*/
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status_t (*reset_context) (parser_t *this);
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/**
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* @brief Destroys a parser object
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*
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* @param parser parser object
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* @return
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* - SUCCESSFUL in any case
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*/
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status_t (*destroy) (parser_t *this);
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};
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/**
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* @brief Constructor to create a parser
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*
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* @param data chunk of data to parse with this parser object
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* @return the parser, or NULL if failed
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*
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*/
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parser_t *parser_create(chunk_t data);
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#endif /*PARSER_H_*/
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