Added IPsec SA manager

2012-08-08 15:41:03 +02:00
parent 9f7e1899a9
commit 914479370e
6 changed files with 458 additions and 7 deletions
@@ -0,0 +1,124 @@
+/*
+ * 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_sa_mgr ipsec_sa_mgr
+ * @{ @ingroup libipsec
+ */
+
+#ifndef IPSEC_SA_MGR_H_
+#define IPSEC_SA_MGR_H_
+
+#include "ipsec_sa.h"
+
+#include <library.h>
+#include <ipsec/ipsec_types.h>
+#include <selectors/traffic_selector.h>
+#include <utils/host.h>
+
+typedef struct ipsec_sa_mgr_t ipsec_sa_mgr_t;
+
+/**
+ * IPsec SA manager
+ *
+ * The first methods are modeled after those in kernel_ipsec_t.
+ */
+struct ipsec_sa_mgr_t {
+
+	/**
+	 * Allocate an SPI for an inbound IPsec SA
+	 *
+	 * @param src			source address of the SA
+	 * @param dst			destination address of the SA
+	 * @param protocol		protocol of the SA (only ESP supported)
+	 * @param reqid			reqid for the SA
+	 * @param spi			the allocated SPI
+	 * @return				SUCCESS of operation successful
+	 */
+	status_t (*get_spi)(ipsec_sa_mgr_t *this, host_t *src, host_t *dst,
+						u_int8_t protocol, u_int32_t reqid, u_int32_t *spi);
+
+	/**
+	 * Add a new SA
+	 *
+	 * @param src			source address for this SA (gets cloned)
+	 * @param dst			destination address for this SA (gets cloned)
+	 * @param spi			SPI for this SA
+	 * @param protocol		protocol for this SA (only ESP is supported)
+	 * @param reqid			reqid for this SA
+	 * @param mark			mark for this SA (ignored)
+	 * @param tfc			Traffic Flow Confidentiality (not yet supported)
+	 * @param lifetime		lifetime for this SA
+	 * @param enc_alg		encryption algorithm for this SA
+	 * @param enc_key		encryption key for this SA
+	 * @param int_alg		integrity protection algorithm
+	 * @param int_key		integrity protection key
+	 * @param mode			mode for this SA (only tunnel mode is supported)
+	 * @param ipcomp		IPcomp transform (not supported, use IPCOMP_NONE)
+	 * @param cpi			CPI for IPcomp (ignored)
+	 * @param encap			enable UDP encapsulation (must be TRUE)
+	 * @param esn			Extended Sequence Numbers (currently not supported)
+	 * @param inbound		TRUE if this is an inbound SA, FALSE otherwise
+	 * @param src_ts		source traffic selector
+	 * @param dst_ts		destination traffic selector
+	 * @return				SUCCESS if operation completed
+	 */
+	status_t (*add_sa)(ipsec_sa_mgr_t *this, host_t *src, host_t *dst,
+					   u_int32_t spi, u_int8_t protocol, u_int32_t reqid,
+					   mark_t mark, u_int32_t tfc,	lifetime_cfg_t *lifetime,
+					   u_int16_t enc_alg, chunk_t enc_key, u_int16_t int_alg,
+					   chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp,
+					   u_int16_t cpi, bool encap, bool esn, bool inbound,
+					   traffic_selector_t *src_ts, traffic_selector_t *dst_ts);
+
+	/**
+	 * Delete a previously added SA
+	 *
+	 * @param spi			SPI of the SA
+	 * @param src			source address of the SA
+	 * @param dst			destination address of the SA
+	 * @param protocol		protocol of the SA
+	 * @param cpi			CPI for IPcomp
+	 * @param mark			optional mark
+	 * @return				SUCCESS if operation completed
+	 */
+	status_t (*del_sa)(ipsec_sa_mgr_t *this, host_t *src, host_t *dst,
+					   u_int32_t spi, u_int8_t protocol, u_int16_t cpi,
+					   mark_t mark);
+
+	/**
+	 * Flush all SAs
+	 *
+	 * @return				SUCCESS if operation completed
+	 */
+	status_t (*flush_sas)(ipsec_sa_mgr_t *this);
+
+	/**
+	 * Destroy an ipsec_sa_mgr_t
+	 */
+	void (*destroy)(ipsec_sa_mgr_t *this);
+
+};
+
+/**
+ * Create an ipsec_sa_mgr instance
+ *
+ * @return					IPsec SA manager instance
+ */
+ipsec_sa_mgr_t *ipsec_sa_mgr_create();
+
+#endif /** IPSEC_SA_MGR_H_ @}*/