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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_eap tls_eap
* @{ @ingroup libtls
*/
#ifndef TLS_EAP_H_
#define TLS_EAP_H_
typedef struct tls_eap_t tls_eap_t;
#include <eap/eap.h>
#include "tls.h"
/**
* TLS over EAP helper, as used by EAP-TLS and EAP-TTLS.
*/
struct tls_eap_t {
/**
* Initiate TLS/TTLS/TNC over EAP exchange (as client).
*
* @param out allocated EAP packet data to send
* @return
* - NEED_MORE if more exchanges required
* - FAILED if initiation failed
*/
status_t (*initiate)(tls_eap_t *this, chunk_t *out);
/**
* Process a received EAP-TLS/TTLS/TNC packet, create response.
*
* @param in EAP packet data to process
* @param out allocated EAP packet data to send
* @return
* - SUCCESS if TLS negotiation completed
* - FAILED if TLS negotiation failed
* - NEED_MORE if more exchanges required
*/
status_t (*process)(tls_eap_t *this, chunk_t in, chunk_t *out);
/**
* Get the EAP-MSK.
*
* @return MSK
*/
chunk_t (*get_msk)(tls_eap_t *this);
/**
* Get the current EAP identifier.
*
* @return identifier
*/
uint8_t (*get_identifier)(tls_eap_t *this);
/**
* Set the EAP identifier to a deterministic value, overwriting
* the randomly initialized default value.
*
* @param identifier EAP identifier
*/
void (*set_identifier) (tls_eap_t *this, uint8_t identifier);
/**
* Destroy a tls_eap_t.
*/
void (*destroy)(tls_eap_t *this);
};
/**
* Create a tls_eap instance.
*
* @param type EAP type, EAP-TLS or EAP-TTLS
* @param tls TLS implementation
* @param frag_size maximum size of a TLS fragment we send
* @param max_msg_count maximum number of processed messages
* @param include_length if TRUE include length in non-fragmented packets
*/
tls_eap_t *tls_eap_create(eap_type_t type, tls_t *tls, size_t frag_size,
int max_msg_count, bool include_length);
#endif /** TLS_EAP_H_ @}*/
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