IPsec policy manager added

This version only provides the very simplest management functions.
2012-08-08 15:41:03 +02:00
parent 3b8276b405
commit 7000cf11b1
6 changed files with 278 additions and 0 deletions
@@ -0,0 +1,106 @@
+/*
+ * 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 <library.h>
+#include <utils/host.h>
+#include <utils/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);
+
+	/**
+	 * 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_ @}*/