1 files changed, 89 insertions, 0 deletions
diff --git a/Source/charon/encoding/generator.h b/Source/charon/encoding/generator.h
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+/**
+ * @file generator.h
+ *
+ * @brief Generic generator class used to generate IKEv2-header and payloads.
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * 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 GENERATOR_H_
+#define GENERATOR_H_
+
+#include <types.h>
+#include <encoding/payloads/encodings.h>
+#include <encoding/payloads/payload.h>
+
+/**
+ * Generating is done in a data buffer.
+ * This is thehe start size of this buffer in Bytes.
+ */
+#define GENERATOR_DATA_BUFFER_SIZE 500
+
+/**
+ * Number of bytes to increase the buffer, if it is to small.
+ */
+#define GENERATOR_DATA_BUFFER_INCREASE_VALUE 500
+
+/**
+ *A generator_t object which generates payloads of specific type.
+ */
+typedef struct generator_s generator_t;
+
+struct generator_s {
+	
+	/**
+	 * @brief Generates a specific payload from given payload object.
+	 *
+	 * Remember: Header and substructures are also handled as payloads.
+	 *
+	 * @param this 				generator_t object
+	 * @param[in] payload 		interface payload_t implementing object
+	 * @return 
+	 * 							- SUCCESSFUL if succeeded
+	 * 		   					- OUT_OF_RES if out of ressources
+	 */
+	status_t (*generate_payload) (generator_t *this,payload_t *payload);
+	
+	/**
+	 * Writes all generated data of current generator context to a chunk
+	 *
+	 * @param this 				generator_t object
+ * 	 * @param[out] data 			chunk to write the data to
+	 * @return 
+	 * @return 
+	 * 							- SUCCESSFUL if succeeded
+	 * 							- OUT_OF_RES otherwise
+	 */
+	status_t (*write_to_chunk) (generator_t *this,chunk_t *data);
+
+	/**
+	 * @brief Destroys a generator_t object.
+	 *
+	 * @param this 		generator_t object
+	 * 
+	 * @return 			always success
+	 */
+	status_t (*destroy) (generator_t *this);
+};
+
+/**
+ * Constructor to create a generator
+ *
+ */
+generator_t * generator_create();
+
+#endif /*GENERATOR_H_*/