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diff --git a/src/libcharon/sa/mediation_manager.h b/src/libcharon/sa/mediation_manager.h
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+++ b/src/libcharon/sa/mediation_manager.h
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+/*
+ * Copyright (C) 2007 Tobias Brunner
+ * 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 mediation_manager mediation_manager
+ * @{ @ingroup sa
+ */
+
+#ifndef MEDIATION_MANAGER_H_
+#define MEDIATION_MANAGER_H_
+
+typedef struct mediation_manager_t mediation_manager_t;
+
+#include <sa/ike_sa_id.h>
+#include <utils/identification.h>
+
+/**
+ * The mediation manager is responsible for managing currently online
+ * peers and registered requests for offline peers on the mediation server.
+ */
+struct mediation_manager_t {
+
+	/**
+	 * Remove the IKE_SA of a peer.
+	 *
+	 * @param ike_sa_id			the IKE_SA ID of the peer's SA
+	 */
+	void (*remove) (mediation_manager_t* this, ike_sa_id_t *ike_sa_id);
+
+	/**
+	 * Update the ike_sa_id that is assigned to a peer's ID. If the peer
+	 * is new, it gets a new record assigned.
+	 *
+	 * @param peer_id			the peer's ID
+	 * @param ike_sa_id			the IKE_SA ID of the peer's SA
+	 */
+	void (*update_sa_id) (mediation_manager_t* this, identification_t *peer_id,
+						  ike_sa_id_t *ike_sa_id);
+
+	/**
+	 * Checks if a specific peer is online.
+	 *
+	 * @param peer_id			the peer's ID
+	 * @returns
+	 *							- IKE_SA ID of the peer's SA.
+	 *							- NULL, if the peer is not online.
+	 */
+	ike_sa_id_t* (*check) (mediation_manager_t* this,
+						   identification_t *peer_id);
+
+	/**
+	 * Checks if a specific peer is online and registers the requesting
+	 * peer if it is not.
+	 *
+	 * @param peer_id			the peer's ID
+	 * @param requester			the requesters ID
+	 * @returns
+	 *							- IKE_SA ID of the peer's SA.
+	 *							- NULL, if the peer is not online.
+	 */
+	ike_sa_id_t* (*check_and_register) (mediation_manager_t* this,
+										identification_t *peer_id,
+										identification_t *requester);
+
+	/**
+	 * Destroys the manager with all data.
+	 */
+	void (*destroy) (mediation_manager_t *this);
+};
+
+/**
+ * Create a manager.
+ *
+ * @returns	mediation_manager_t object
+ */
+mediation_manager_t *mediation_manager_create(void);
+
+#endif /** MEDIATION_MANAGER_H_ @}*/