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/**
* @file backend.h
*
* @brief Interface backend_t.
*
*/
/*
* Copyright (C) 2007 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 BACKEND_H_
#define BACKEND_H_
typedef struct backend_t backend_t;
#include <library.h>
#include <config/ike_cfg.h>
#include <config/peer_cfg.h>
#include <utils/linked_list.h>
/**
* @brief The interface for a configuration backend.
*
* A configuration backend is loaded by the backend_manager. It does the actual
* configuration lookup for the method it implements. See backend_manager_t for
* more information.
*
* @b Constructors:
* - implementations constructors
*
* @ingroup backends
*/
struct backend_t {
/**
* @brief Get an ike_cfg identified by two hosts.
*
* @param this calling object
* @param my_host address of own host
* @param other_host address of remote host
* @return matching ike_config, or NULL if none found
*/
ike_cfg_t *(*get_ike_cfg)(backend_t *this,
host_t *my_host, host_t *other_host);
/**
* @brief Get a peer_cfg identified by two IDs.
*
* Select a config based on the two IDs and the other's certificate issuer
*
* @param this calling object
* @param my_id own ID
* @param other_id peer ID
* @param other_ca_info info record on issuer of peer certificate
* @return matching peer_config, or NULL if none found
*/
peer_cfg_t *(*get_peer_cfg)(backend_t *this,
identification_t *my_id, identification_t *other_id,
ca_info_t *other_ca_info);
/**
* @brief Check if a backend is writable and implements writable_backend_t.
*
* @param this calling object
* @return TRUE if backend implements writable_backend_t.
*/
bool (*is_writeable)(backend_t *this);
/**
* @brief Destroy a backend.
*
* @param this calling object
*/
void (*destroy)(backend_t *this);
};
/**
* Construction to create a backend.
*/
typedef backend_t*(*backend_constructor_t)(void);
#endif /* BACKEND_H_ */
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