Added xauth-noauth plugin

This XAuth backend does not do any authentication of client credentials
but simply sends a successful XAuth status to the client, thereby
concluding the XAuth exchange.  This can be useful to fallback to basic
RSA authentication with clients that can not be configured without XAuth
authentication.

1 files changed, 89 insertions, 0 deletions

diff --git a/src/libcharon/plugins/xauth_noauth/xauth_noauth.c b/src/libcharon/plugins/xauth_noauth/xauth_noauth.c
new file mode 100644
index 000000000..a9d95126a
--- /dev/null
+++ b/src/libcharon/plugins/xauth_noauth/xauth_noauth.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2013 Tobias Brunner
+ * 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.
+ */
+
+#include "xauth_noauth.h"
+
+#include <daemon.h>
+#include <library.h>
+
+typedef struct private_xauth_noauth_t private_xauth_noauth_t;
+
+/**
+ * Private data of an xauth_noauth_t object.
+ */
+struct private_xauth_noauth_t {
+
+	/**
+	 * Public interface.
+	 */
+	xauth_noauth_t public;
+
+	/**
+	 * ID of the peer (not really used here)
+	 */
+	identification_t *peer;
+
+};
+
+METHOD(xauth_method_t, initiate, status_t,
+	private_xauth_noauth_t *this, cp_payload_t **out)
+{
+	/* XAuth task handles the details for us */
+	return SUCCESS;
+}
+
+METHOD(xauth_method_t, process, status_t,
+	private_xauth_noauth_t *this, cp_payload_t *in, cp_payload_t **out)
+{
+	/* this should never be called */
+	return FAILED;
+}
+
+METHOD(xauth_method_t, get_identity, identification_t*,
+	private_xauth_noauth_t *this)
+{
+	/* this should never be called, but lets still return a valid ID */
+	return this->peer;
+}
+
+METHOD(xauth_method_t, destroy, void,
+	private_xauth_noauth_t *this)
+{
+	this->peer->destroy(this->peer);
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+xauth_noauth_t *xauth_noauth_create_server(identification_t *server,
+										   identification_t *peer)
+{
+	private_xauth_noauth_t *this;
+
+	INIT(this,
+		.public = {
+			.xauth_method = {
+				.initiate = _initiate,
+				.process = _process,
+				.get_identity = _get_identity,
+				.destroy = _destroy,
+			},
+		},
+		.peer = identification_create_from_string("%any"),
+	);
+
+	return &this->public;
+}