Added a simple high level TLS wrapper for sockets

2010-08-25 12:52:53 +02:00
parent bd23b9086e
commit 17102f7b58
4 changed files with 290 additions and 0 deletions
@@ -0,0 +1,75 @@
+/*
+ * 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_socket tls_socket
+ * @{ @ingroup libtls
+ */
+
+#ifndef TLS_SOCKET_H_
+#define TLS_SOCKET_H_
+
+#include "tls.h"
+
+typedef struct tls_socket_t tls_socket_t;
+
+/**
+ * TLS secured socket.
+ *
+ * Wraps a blocking (socket) file descriptor for a reliable transport into a
+ * TLS secured socket. TLS negotiation happens on demand, certificates and
+ * private keys are fetched from any registered credential set.
+ */
+struct tls_socket_t {
+
+	/**
+	 * Read data from secured socket, return allocated chunk.
+	 *
+	 * This call is blocking, you may use select() on the underlying socket to
+	 * wait for data. If the there was non-application data available, the
+	 * read function can return an empty chunk.
+	 *
+	 * @param data		pointer to allocate received data
+	 * @return			TRUE if data received successfully
+	 */
+	bool (*read)(tls_socket_t *this, chunk_t *data);
+
+	/**
+	 * Write a chunk of data over the secured socket.
+	 *
+	 * @param data		data to send
+	 * @return			TRUE if data sent successfully
+	 */
+	bool (*write)(tls_socket_t *this, chunk_t data);
+
+	/**
+	 * Destroy a tls_socket_t.
+	 */
+	void (*destroy)(tls_socket_t *this);
+};
+
+/**
+ * Create a tls_socket instance.
+ *
+ * @param is_server			TRUE to act as TLS server
+ * @param server			server identity
+ * @param peer				client identity, NULL for no client authentication
+ * @param fd				socket to read/write from
+ * @return					TLS socket wrapper
+ */
+tls_socket_t *tls_socket_create(bool is_server, identification_t *server,
+								identification_t *peer, int fd);
+
+#endif /** TLS_SOCKET_H_ @}*/