1 files changed, 115 insertions, 0 deletions
diff --git a/src/libipsec/ipsec_processor.h b/src/libipsec/ipsec_processor.h
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+++ b/src/libipsec/ipsec_processor.h
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+/*
+ * Copyright (C) 2012 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 ipsec_processor ipsec_processor
+ * @{ @ingroup libipsec
+ */
+
+#ifndef IPSEC_PROCESSOR_H_
+#define IPSEC_PROCESSOR_H_
+
+#include "ip_packet.h"
+#include "esp_packet.h"
+
+typedef struct ipsec_processor_t ipsec_processor_t;
+
+/**
+ * Callback called to deliver an inbound plaintext packet.
+ *
+ * @param data			data supplied during registration of the callback
+ * @param packet		plaintext IP packet to deliver
+ */
+typedef void (*ipsec_inbound_cb_t)(void *data, ip_packet_t *packet);
+
+/**
+ * Callback called to send an ESP packet.
+ *
+ * @note The ESP packet currently comes without IP header (and without UDP
+ * header in case of UDP encapsulation)
+ *
+ * @param data			data supplied during registration of the callback
+ * @param packet		ESP packet to send
+ */
+typedef void (*ipsec_outbound_cb_t)(void *data, esp_packet_t *packet);
+
+/**
+ *  IPsec processor
+ */
+struct ipsec_processor_t {
+
+	/**
+	 * Queue an inbound ESP packet for processing.
+	 *
+	 * @param packet		the ESP packet to process
+	 */
+	void (*queue_inbound)(ipsec_processor_t *this, esp_packet_t *packet);
+
+	/**
+	 * Queue an outbound plaintext IP packet for processing.
+	 *
+	 * @param packet		the plaintext IP packet
+	 */
+	void (*queue_outbound)(ipsec_processor_t *this, ip_packet_t *packet);
+
+	/**
+	 * Register the callback used to deliver inbound plaintext packets.
+	 *
+	 * @param cb			the inbound callback function
+	 * @param data			optional data provided to callback
+	 */
+	void (*register_inbound)(ipsec_processor_t *this, ipsec_inbound_cb_t cb,
+							 void *data);
+
+	/**
+	 * Unregister a previously registered inbound callback.
+	 *
+	 * @param cb			previously registered callback function
+	 */
+	void (*unregister_inbound)(ipsec_processor_t *this,
+							   ipsec_inbound_cb_t cb);
+
+	/**
+	 * Register the callback used to send outbound ESP packets.
+	 *
+	 * @param cb			the outbound callback function
+	 * @param data			optional data provided to callback
+	 */
+	void (*register_outbound)(ipsec_processor_t *this, ipsec_outbound_cb_t cb,
+							  void *data);
+
+	/**
+	 * Unregister a previously registered outbound callback.
+	 *
+	 * @param cb			previously registered callback function
+	 */
+	void (*unregister_outbound)(ipsec_processor_t *this,
+								ipsec_outbound_cb_t cb);
+
+	/**
+	 * Destroy an ipsec_processor_t.
+	 */
+	void (*destroy)(ipsec_processor_t *this);
+
+};
+
+/**
+ * Create an ipsec_processor_t instance
+ *
+ * @return					IPsec processor instance
+ */
+ipsec_processor_t *ipsec_processor_create();
+
+#endif /** IPSEC_PROCESSOR_H_ @}*/