Moved TLS stack to its own library

1 files changed, 82 insertions, 0 deletions

diff --git a/src/libtls/tls_handshake.h b/src/libtls/tls_handshake.h
new file mode 100644
index 000000000..c0798625e
--- /dev/null
+++ b/src/libtls/tls_handshake.h
@@ -0,0 +1,82 @@
+/*
+ * 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 tls_handshake tls_handshake
+ * @{ @ingroup libtls
+ */
+
+#ifndef TLS_HANDSHAKE_H_
+#define TLS_HANDSHAKE_H_
+
+typedef struct tls_handshake_t tls_handshake_t;
+
+#include "tls.h"
+#include "tls_reader.h"
+#include "tls_writer.h"
+
+/**
+ * TLS handshake state machine interface.
+ */
+struct tls_handshake_t {
+
+	/**
+	 * Process received TLS handshake message.
+	 *
+	 * @param type		TLS handshake message type
+	 * @param reader	TLS data buffer
+	 * @return
+	 *					- SUCCESS if handshake complete
+	 *					- FAILED if handshake failed
+	 *					- NEED_MORE if another invocation of process/build needed
+	 */
+	status_t (*process)(tls_handshake_t *this,
+						tls_handshake_type_t type, tls_reader_t *reader);
+
+	/**
+	 * Build TLS handshake messages to send out.
+	 *
+	 * @param type		type of created handshake message
+	 * @param writer	TLS data buffer to write to
+	 * @return
+	 *					- SUCCESS if handshake complete
+	 *					- FAILED if handshake failed
+	 *					- NEED_MORE if more messages ready for delivery
+	 *					- INVALID_STATE if more input to process() required
+	 */
+	status_t (*build)(tls_handshake_t *this,
+					  tls_handshake_type_t *type, tls_writer_t *writer);
+
+	/**
+	 * Check if the cipher spec for outgoing messages has changed.
+	 *
+	 * @return			TRUE if cipher spec changed
+	 */
+	bool (*cipherspec_changed)(tls_handshake_t *this);
+
+	/**
+	 * Change the cipher spec for incoming messages.
+	 *
+	 * @return			TRUE if cipher spec changed
+	 */
+	bool (*change_cipherspec)(tls_handshake_t *this);
+
+	/**
+	 * Destroy a tls_handshake_t.
+	 */
+	void (*destroy)(tls_handshake_t *this);
+};
+
+#endif /** TLS_HANDSHAKE_H_ @}*/