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/*
* Copyright (C) 2012 Tobias Brunner
* Copyright (C) 2012 Giuliano Grassi
* Copyright (C) 2012 Ralf Sager
* 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 ipsec_policy ipsec_policy
* @{ @ingroup libipsec
*/
#ifndef IPSEC_POLICY_H
#define IPSEC_POLICY_H
#include "ip_packet.h"
#include <library.h>
#include <networking/host.h>
#include <ipsec/ipsec_types.h>
#include <selectors/traffic_selector.h>
typedef struct ipsec_policy_t ipsec_policy_t;
/**
* IPsec Policy
*/
struct ipsec_policy_t {
/**
* Get the source traffic selector of this policy
*
* @return the source traffic selector
*/
traffic_selector_t *(*get_source_ts)(ipsec_policy_t *this);
/**
* Get the destination traffic selector of this policy
*
* @return the destination traffic selector
*/
traffic_selector_t *(*get_destination_ts)(ipsec_policy_t *this);
/**
* Get the direction of this policy
*
* @return direction
*/
policy_dir_t (*get_direction)(ipsec_policy_t *this);
/**
* Get the priority of this policy
*
* @return priority
*/
policy_priority_t (*get_priority)(ipsec_policy_t *this);
/**
* Get the type of this policy (e.g. IPsec)
*
* @return the policy type
*/
policy_type_t (*get_type)(ipsec_policy_t *this);
/**
* Get the reqid associated to this policy
*
* @return the reqid
*/
u_int32_t (*get_reqid)(ipsec_policy_t *this);
/**
* Get another reference to this policy
*
* @return additional reference to the policy
*/
ipsec_policy_t *(*get_ref)(ipsec_policy_t *this);
/**
* Check if this policy matches all given parameters
*
* @param src_ts source traffic selector
* @param dst_ts destination traffic selector
* @param direction traffic direction
* @param reqid reqid of the policy
* @param mark mark for this policy
* @param prioirty policy priority
* @return TRUE if policy matches all parameters
*/
bool (*match)(ipsec_policy_t *this, traffic_selector_t *src_ts,
traffic_selector_t *dst_ts, policy_dir_t direction,
u_int32_t reqid, mark_t mark, policy_priority_t priority);
/**
* Check if this policy matches the given IP packet
*
* @param packet IP packet
* @return TRUE if policy matches the packet
*/
bool (*match_packet)(ipsec_policy_t *this, ip_packet_t *packet);
/**
* Destroy an ipsec_policy_t
*/
void (*destroy)(ipsec_policy_t *this);
};
/**
* Create an ipsec_policy_t instance
*
* @param src source address of SA
* @param dst dest address of SA
* @param src_ts traffic selector to match traffic source
* @param dst_ts traffic selector to match traffic dest
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
* @param type type of policy, POLICY_(IPSEC|PASS|DROP)
* @param sa details about the SA(s) tied to this policy
* @param mark mark for this policy
* @param priority priority of this policy
* @return ipsec policy instance
*/
ipsec_policy_t *ipsec_policy_create(host_t *src, host_t *dst,
traffic_selector_t *src_ts,
traffic_selector_t *dst_ts,
policy_dir_t direction, policy_type_t type,
ipsec_sa_cfg_t *sa, mark_t mark,
policy_priority_t priority);
#endif /** IPSEC_POLICY_H @}*/
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