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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_mgr ipsec_policy_mgr
+ * @{ @ingroup libipsec
+ */
+
+#ifndef IPSEC_POLICY_MGR_H_
+#define IPSEC_POLICY_MGR_H_
+
+#include "ipsec_policy.h"
+#include "ip_packet.h"
+
+#include <library.h>
+#include <networking/host.h>
+#include <collections/linked_list.h>
+#include <ipsec/ipsec_types.h>
+#include <selectors/traffic_selector.h>
+
+typedef struct ipsec_policy_mgr_t ipsec_policy_mgr_t;
+
+/**
+ * IPsec policy manager
+ *
+ * The first methods are modeled after those in kernel_ipsec_t.
+ *
+ * @note Only policies of type POLICY_IPSEC are currently used, also policies
+ * with direction POLICY_FWD are ignored. Any packets that do not match an
+ * installed policy will be dropped.
+ */
+struct ipsec_policy_mgr_t {
+
+ /**
+ * Add a policy
+ *
+ * A policy is always associated to an SA. Traffic which matches a
+ * policy is handled by the SA with the same reqid.
+ *
+ * @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 SUCCESS if operation completed
+ */
+ status_t (*add_policy)(ipsec_policy_mgr_t *this,
+ 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);
+
+ /**
+ * Remove a policy
+ *
+ * @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 reqid unique ID of the associated SA
+ * @param mark optional mark
+ * @param priority priority of the policy
+ * @return SUCCESS if operation completed
+ */
+ status_t (*del_policy)(ipsec_policy_mgr_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);
+
+ /**
+ * Flush all policies
+ *
+ * @return SUCCESS if operation completed
+ */
+ status_t (*flush_policies)(ipsec_policy_mgr_t *this);
+
+ /**
+ * Find the policy that matches the given IP packet best
+ *
+ * @param packet IP packet to match
+ * @param inbound TRUE for an inbound packet
+ * @return reference to the policy, or NULL if none found
+ */
+ ipsec_policy_t *(*find_by_packet)(ipsec_policy_mgr_t *this,
+ ip_packet_t *packet, bool inbound);
+
+ /**
+ * Destroy an ipsec_policy_mgr_t
+ */
+ void (*destroy)(ipsec_policy_mgr_t *this);
+
+};
+
+/**
+ * Create an ipsec_policy_mgr instance
+ *
+ * @return ipsec_policy_mgr
+ */
+ipsec_policy_mgr_t *ipsec_policy_mgr_create();
+
+#endif /** IPSEC_POLICY_MGR_H_ @}*/