1 files changed, 88 insertions, 0 deletions
diff --git a/src/libcharon/plugins/eap_radius/radius_client.h b/src/libcharon/plugins/eap_radius/radius_client.h
new file mode 100644
index 000000000..77ba94807
--- /dev/null
+++ b/src/libcharon/plugins/eap_radius/radius_client.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * 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.
+ */
+
+/**
+ * @defgroup radius_client radius_client
+ * @{ @ingroup eap_radius
+ */
+
+#ifndef RADIUS_CLIENT_H_
+#define RADIUS_CLIENT_H_
+
+#include "radius_message.h"
+
+typedef struct radius_client_t radius_client_t;
+
+/**
+ * RADIUS client functionality.
+ *
+ * To communicate with a RADIUS server, create a client and send messages over
+ * it. All instances share a fixed size pool of sockets. The client reserves
+ * a socket during request() and releases it afterwards.
+ */
+struct radius_client_t {
+
+	/**
+	 * Send a RADIUS request and wait for the response.
+	 *
+	 * The client fills in RADIUS Message identifier, NAS-Identifier,
+	 * NAS-Port-Type, builds a Request-Authenticator and calculates the
+	 * Message-Authenticator attribute.
+	 * The received response gets verified using the Response-Identifier
+	 * and the Message-Authenticator attribute.
+	 *
+	 * @param msg			RADIUS request message to send
+	 * @return				response, NULL if timed out/verification failed
+	 */
+	radius_message_t* (*request)(radius_client_t *this, radius_message_t *msg);
+
+	/**
+	 * Decrypt the MSK encoded in a messages MS-MPPE-Send/Recv-Key.
+	 *
+	 * @param response		RADIUS response message containing attributes
+	 * @param request		associated RADIUS request message
+	 * @return				allocated MSK, empty chunk if none found
+	 */
+	chunk_t (*decrypt_msk)(radius_client_t *this, radius_message_t *response,
+						   radius_message_t *request);
+
+	/**
+	 * Destroy the client, release the socket.
+	 */
+	void (*destroy)(radius_client_t *this);
+};
+
+/**
+ * Create a RADIUS client, acquire a socket.
+ *
+ * This call might block if the socket pool is empty.
+ *
+ * @return			radius_client_t object
+ */
+radius_client_t *radius_client_create();
+
+/**
+ * Initialize the socket pool.
+ *
+ * @return 			TRUE if initialization successful
+ */
+bool radius_client_init();
+
+/**
+ * Cleanup the socket pool.
+ */
+void radius_client_cleanup();
+
+#endif /** RADIUS_CLIENT_H_ @}*/