97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/*
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* Copyright (C) 2010 Tobias Brunner
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup kernel_listener kernel_listener
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* @{ @ingroup hkernel
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*/
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#ifndef KERNEL_LISTENER_H_
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#define KERNEL_LISTENER_H_
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typedef struct kernel_listener_t kernel_listener_t;
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#include <kernel/kernel_ipsec.h>
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#include <selectors/traffic_selector.h>
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#include <utils/host.h>
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/**
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* Interface for components interested in kernel events.
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*
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* All hooks are optional.
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*/
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struct kernel_listener_t {
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/**
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* Hook called if an acquire event for a policy is received.
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*
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* @param reqid reqid of the policy to acquire
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* @param src_ts source traffic selector
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* @param dst_ts destination traffic selector
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* @return TRUE to remain registered, FALSE to unregister
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*/
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bool (*acquire)(kernel_listener_t *this, u_int32_t reqid,
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traffic_selector_t *src_ts, traffic_selector_t *dst_ts);
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/**
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* Hook called if an exire event for an IPsec SA is received.
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*
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* @param reqid reqid of the expired SA
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* @param protocol protocol of the expired SA
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* @param spi spi of the expired SA
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* @param hard TRUE if it is a hard expire, FALSE otherwise
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* @return TRUE to remain registered, FALSE to unregister
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*/
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bool (*expire)(kernel_listener_t *this, u_int32_t reqid,
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u_int8_t protocol, u_int32_t spi, bool hard);
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/**
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* Hook called if the NAT mappings of an IPsec SA changed.
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*
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* @param reqid reqid of the SA
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* @param spi spi of the SA
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* @param remote new remote host
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* @return TRUE to remain registered, FALSE to unregister
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*/
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bool (*mapping)(kernel_listener_t *this, u_int32_t reqid, u_int32_t spi,
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host_t *remote);
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/**
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* Hook called if a migrate event for a policy is received.
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*
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* @param reqid reqid of the policy
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* @param src_ts source traffic selector
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* @param dst_ts destination traffic selector
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* @param direction direction of the policy (in|out)
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* @param local local host address to be used in the IKE_SA
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* @param remote remote host address to be used in the IKE_SA
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* @return TRUE to remain registered, FALSE to unregister
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*/
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bool (*migrate)(kernel_listener_t *this, u_int32_t reqid,
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traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
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policy_dir_t direction, host_t *local, host_t *remote);
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/**
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* Hook called if changes in the networking layer occurred (interfaces
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* up/down, routes added/deleted etc.).
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*
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* @param address TRUE if address list, FALSE if routing changed
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* @return TRUE to remain registered, FALSE to unregister
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*/
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bool (*roam)(kernel_listener_t *this, bool address);
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};
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#endif /** KERNEL_LISTENER_H_ @}*/
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