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/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* 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.
*/
/**
* @defgroup tls_fragmentation tls_fragmentation
* @{ @ingroup libtls
*/
#ifndef TLS_FRAGMENTATION_H_
#define TLS_FRAGMENTATION_H_
#include <library.h>
#include "tls.h"
#include "tls_alert.h"
#include "tls_handshake.h"
typedef struct tls_fragmentation_t tls_fragmentation_t;
/**
* TLS record protocol fragmentation layer.
*/
struct tls_fragmentation_t {
/**
* Process a fragmented TLS record, pass it to upper layers.
*
* @param type type of the TLS record to process
* @param data associated TLS record data
* @return
* - SUCCESS if TLS negotiation complete
* - FAILED if TLS handshake failed
* - NEED_MORE if more invocations to process/build needed
*/
status_t (*process)(tls_fragmentation_t *this,
tls_content_type_t type, chunk_t data);
/**
* Query upper layer for TLS messages, build fragmented records.
*
* @param type type of the built TLS record
* @param data allocated data of the built TLS record
* @return
* - SUCCESS if TLS negotiation complete
* - FAILED if TLS handshake failed
* - NEED_MORE if upper layers have more records to send
* - INVALID_STATE if more input records required
*/
status_t (*build)(tls_fragmentation_t *this,
tls_content_type_t *type, chunk_t *data);
/**
* Has the application layer finished (returned SUCCESS)?.
*
* @return TRUE if application layer finished
*/
bool (*application_finished)(tls_fragmentation_t *this);
/**
* Destroy a tls_fragmentation_t.
*/
void (*destroy)(tls_fragmentation_t *this);
};
/**
* Create a tls_fragmentation instance.
*
* @param handshake upper layer handshake protocol
* @param alert TLS alert handler
* @param application upper layer application data or NULL
* @return TLS fragmentation layer
*/
tls_fragmentation_t *tls_fragmentation_create(tls_handshake_t *handshake,
tls_alert_t *alert, tls_application_t *application);
#endif /** TLS_FRAGMENTATION_H_ @}*/
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