1 files changed, 98 insertions, 0 deletions
diff --git a/src/libtls/tls_protection.h b/src/libtls/tls_protection.h
new file mode 100644
index 000000000..99c94e935
--- /dev/null
+++ b/src/libtls/tls_protection.h
@@ -0,0 +1,98 @@
+/*
+ * 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_protection tls_protection
+ * @{ @ingroup libtls
+ */
+
+#ifndef TLS_PROTECTION_H_
+#define TLS_PROTECTION_H_
+
+#include <library.h>
+
+#include "tls.h"
+#include "tls_alert.h"
+#include "tls_compression.h"
+
+typedef struct tls_protection_t tls_protection_t;
+
+/**
+ * TLS record protocol protection layer.
+ */
+struct tls_protection_t {
+
+	/**
+	 * Process a protected TLS record, pass it to upper layers.
+	 *
+	 * @param type		type of the TLS record to process
+	 * @param data		associated TLS record data
+	 * @return
+	 *					- SUCCESS if TLS negotiation complete
+	 *					- FAILED if TLS handshake failed
+	 *					- NEED_MORE if more invocations to process/build needed
+	 */
+	status_t (*process)(tls_protection_t *this,
+						tls_content_type_t type, chunk_t data);
+
+	/**
+	 * Query upper layer for TLS record, build protected record.
+	 *
+	 * @param type		type of the built TLS record
+	 * @param data		allocated data of the built TLS record
+	 * @return
+	 *					- SUCCESS if TLS negotiation complete
+	 *					- FAILED if TLS handshake failed
+	 *					- NEED_MORE if upper layers have more records to send
+	 *					- INVALID_STATE if more input records required
+	 */
+	status_t (*build)(tls_protection_t *this,
+					  tls_content_type_t *type, chunk_t *data);
+
+	/**
+	 * Set a new cipher, including encryption and integrity algorithms.
+	 *
+	 * @param inbound	TRUE to use cipher for inbound data, FALSE for outbound
+	 * @param signer	new signer to use, gets owned by protection layer
+	 * @param crypter	new crypter to use, gets owned by protection layer
+	 * @param iv		initial IV for crypter, gets owned by protection layer
+	 */
+	void (*set_cipher)(tls_protection_t *this, bool inbound, signer_t *signer,
+					   crypter_t *crypter, chunk_t iv);
+
+	/**
+	 * Set the TLS version negotiated, used for MAC calculation.
+	 *
+	 * @param version	TLS version negotiated
+	 */
+	void (*set_version)(tls_protection_t *this, tls_version_t version);
+
+	/**
+	 * Destroy a tls_protection_t.
+	 */
+	void (*destroy)(tls_protection_t *this);
+};
+
+/**
+ * Create a tls_protection instance.
+ *
+ * @param compression		compression layer of TLS stack
+ * @param alert				TLS alert handler
+ * @return					TLS protection layer.
+ */
+tls_protection_t *tls_protection_create(tls_compression_t *compression,
+										tls_alert_t *alert);
+
+#endif /** TLS_PROTECTION_H_ @}*/