1 files changed, 143 insertions, 0 deletions
diff --git a/src/libstrongswan/bio/bio_writer.h b/src/libstrongswan/bio/bio_writer.h
new file mode 100644
index 000000000..0b50f7882
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+++ b/src/libstrongswan/bio/bio_writer.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2010 Martin Willi
+ * Copyright (C) 2010 revosec AG
+ *
+ * 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 bio_writer bio_writer
+ * @{ @ingroup bio
+ */
+
+#ifndef BIO_WRITER_H_
+#define BIO_WRITER_H_
+
+typedef struct bio_writer_t bio_writer_t;
+
+#include <library.h>
+
+/**
+ * Buffered output generator.
+ */
+struct bio_writer_t {
+
+	/**
+	 * Append a 8-bit integer to the buffer.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_uint8)(bio_writer_t *this, u_int8_t value);
+
+	/**
+	 * Append a 16-bit integer to the buffer.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_uint16)(bio_writer_t *this, u_int16_t value);
+
+	/**
+	 * Append a 24-bit integer to the buffer.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_uint24)(bio_writer_t *this, u_int32_t value);
+
+	/**
+	 * Append a 32-bit integer to the buffer.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_uint32)(bio_writer_t *this, u_int32_t value);
+
+	/**
+	 * Append a 64-bit integer to the buffer.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_uint64)(bio_writer_t *this, u_int64_t value);
+
+	/**
+	 * Append a chunk of data without a length header.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_data)(bio_writer_t *this, chunk_t value);
+
+	/**
+	 * Append a chunk of data with a 8-bit length header.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_data8)(bio_writer_t *this, chunk_t value);
+
+	/**
+	 * Append a chunk of data with a 16-bit length header.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_data16)(bio_writer_t *this, chunk_t value);
+
+	/**
+	 * Append a chunk of data with a 24-bit length header.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_data24)(bio_writer_t *this, chunk_t value);
+
+	/**
+	 * Append a chunk of data with a 32-bit length header.
+	 *
+	 * @param value		value to append
+	 */
+	void (*write_data32)(bio_writer_t *this, chunk_t value);
+
+	/**
+	 * Prepend a 8-bit length header to existing data.
+	 */
+	void (*wrap8)(bio_writer_t *this);
+
+	/**
+	 * Prepend a 16-bit length header to existing data.
+	 */
+	void (*wrap16)(bio_writer_t *this);
+
+	/**
+	 * Prepend a 24-bit length header to existing data.
+	 */
+	void (*wrap24)(bio_writer_t *this);
+
+	/**
+	 * Prepend a 32-bit length header to existing data.
+	 */
+	void (*wrap32)(bio_writer_t *this);
+
+	/**
+	 * Get the encoded data buffer.
+	 *
+	 * @return			chunk to internal buffer
+	 */
+	chunk_t (*get_buf)(bio_writer_t *this);
+
+	/**
+	 * Destroy a bio_writer_t.
+	 */
+	void (*destroy)(bio_writer_t *this);
+};
+
+/**
+ * Create a bio_writer instance.
+ *
+ * @param bufsize		initially allocated buffer size
+ */
+bio_writer_t *bio_writer_create(u_int32_t bufsize);
+
+#endif /** BIO_WRITER_H_ @}*/