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/*
* Copyright (C) 2011 Martin Willi
* Copyright (C) 2011 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_cache tls_cache
* @{ @ingroup libtls
*/
#ifndef TLS_CACHE_H_
#define TLS_CACHE_H_
typedef struct tls_cache_t tls_cache_t;
#include "tls_crypto.h"
/**
* TLS session cache facility.
*/
struct tls_cache_t {
/**
* Create a new TLS session entry.
*
* @param session session identifier
* @param id identity the session is bound to
* @param master TLS master secret
* @param suite TLS cipher suite of the session
*/
void (*create)(tls_cache_t *this, chunk_t session, identification_t *id,
chunk_t master, tls_cipher_suite_t suite);
/**
* Look up a TLS session entry.
*
* @param session session ID to find
* @param id identity the session is bound to
* @param master gets allocated master secret, if session found
* @return TLS suite of session, 0 if none found
*/
tls_cipher_suite_t (*lookup)(tls_cache_t *this, chunk_t session,
identification_t *id, chunk_t* master);
/**
* Check if we have a session for a given identity.
*
* @param id identity to check
* @return allocated session ID, or chunk_empty
*/
chunk_t (*check)(tls_cache_t *this, identification_t *id);
/**
* Destroy a tls_cache_t.
*/
void (*destroy)(tls_cache_t *this);
};
/**
* Create a tls_cache instance.
*
* @param max_sessions maximum number of sessions to store
* @param max_age maximum age of a session, in seconds
* @return tls cache
*/
tls_cache_t *tls_cache_create(u_int max_sessions, u_int max_age);
#endif /** TLS_CACHE_H_ @}*/
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