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diff --git a/src/charon/encoding/payloads/cp_payload.h b/src/charon/encoding/payloads/cp_payload.h
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+++ b/src/charon/encoding/payloads/cp_payload.h
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+/**
+ * @file cp_payload.h
+ * 
+ * @brief Interface of cp_payload_t.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005-2006 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * 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.
+ */
+
+#ifndef CP_PAYLOAD_H_
+#define CP_PAYLOAD_H_
+
+typedef enum config_type_t config_type_t;
+typedef struct cp_payload_t cp_payload_t;
+
+#include <library.h>
+#include <encoding/payloads/payload.h>
+#include <encoding/payloads/configuration_attribute.h>
+#include <utils/linked_list.h>
+
+/**
+ * CP_PAYLOAD length in bytes without any proposal substructure.
+ * 
+ * @ingroup payloads
+ */
+#define CP_PAYLOAD_HEADER_LENGTH 8
+
+/**
+ * Config Type of an Configuration Payload.
+ *
+ * @ingroup payloads
+ */
+enum config_type_t {
+	CFG_REQUEST = 1,
+	CFG_REPLY = 2,
+	CFG_SET = 3,
+	CFG_ACK = 4,
+};
+
+/**
+ * enum name for config_type_t.
+ *
+ * @ingroup payloads
+ */
+extern enum_name_t *config_type_names;
+
+/**
+ * @brief Class representing an IKEv2-CP Payload.
+ * 
+ * The CP Payload format is described in RFC section 3.15.
+ * 
+ * @b Constructors:
+ * - cp_payload_create()
+ * 
+ * @ingroup payloads
+ */
+struct cp_payload_t {
+	/**
+	 * The payload_t interface.
+	 */
+	payload_t payload_interface;
+	
+	/**
+	 * @brief Creates an iterator of stored configuration_attribute_t objects.
+	 * 
+	 * When deleting an attribute using this iterator, the length of this
+	 * configuration_attribute_t has to be refreshed by calling get_length()!
+	 *
+	 * @param this 			calling cp_payload_t object
+	 * @return				created iterator_t object
+	 */
+	iterator_t *(*create_attribute_iterator) (cp_payload_t *this);
+	
+	/**
+	 * @brief Adds a configuration_attribute_t object to this object.
+	 * 
+	 * The added configuration_attribute_t object is getting destroyed in
+	 * destroy function of cp_payload_t.
+	 *
+	 * @param this 			calling cp_payload_t object
+	 * @param attribute		configuration_attribute_t object to add
+	 */
+	void (*add_configuration_attribute) (cp_payload_t *this, configuration_attribute_t *attribute);
+	
+	/**
+	 * @brief Set the config type.
+	 *
+	 * @param this 			calling cp_payload_t object
+	 * @param config_type	config_type_t to set
+	 */
+	void (*set_config_type) (cp_payload_t *this,config_type_t config_type);
+	
+	/**
+	 * @brief Get the config type.
+	 *
+	 * @param this 			calling cp_payload_t object
+	 * @return				config_type_t
+	 */
+	config_type_t (*get_config_type) (cp_payload_t *this);
+	
+	/**
+	 * @brief Destroys an cp_payload_t object.
+	 *
+	 * @param this 			cp_payload_t object to destroy
+	 */
+	void (*destroy) (cp_payload_t *this);
+};
+
+/**
+ * @brief Creates an empty cp_payload_t object
+ * 
+ * @return cp_payload_t object
+ * 
+ * @ingroup payloads
+ */
+cp_payload_t *cp_payload_create(void);
+
+#endif /*CP_PAYLOAD_H_*/