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/*
* Copyright (C) 2008 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.
*/
/**
* @defgroup attribute_provider attribute_provider
* @{ @ingroup attributes
*/
#ifndef ATTRIBUTE_PROVIDER_H_
#define ATTRIBUTE_PROVIDER_H_
#include <utils/host.h>
#include <utils/identification.h>
typedef struct attribute_provider_t attribute_provider_t;
/**
* Interface to provide attributes to peers through attribute manager.
*/
struct attribute_provider_t {
/**
* Acquire a virtual IP address to assign to a peer.
*
* @param pool name of the pool to acquire address from
* @param id peer ID
* @param requested IP in configuration request
* @return allocated address, NULL to serve none
*/
host_t* (*acquire_address)(attribute_provider_t *this,
char *pool, identification_t *id,
host_t *requested);
/**
* Release a previously acquired address.
*
* @param pool name of the pool this address was acquired from
* @param address address to release
* @param id peer ID
* @return TRUE if the address has been released by the provider
*/
bool (*release_address)(attribute_provider_t *this,
char *pool, host_t *address, identification_t *id);
/**
* Create an enumerator over attributes to hand out to a peer.
*
* @param id peer ID
* @param vip virtual IP to assign to peer, if any
* @return enumerator (configuration_attribute_type_t, chunk_t)
*/
enumerator_t* (*create_attribute_enumerator)(attribute_provider_t *this,
identification_t *id, host_t *vip);
};
#endif /** ATTRIBUTE_PROVIDER_H_ @}*/
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