Added hook to log received KE group

2011-01-05 16:45:47 +01:00
parent 6dd6b0ef95
commit c6f2bac1b8
2 changed files with 82 additions and 1 deletions
@@ -0,0 +1,81 @@
+/*
+ * 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.
+ */
+
+#include "hook.h"
+
+#include <encoding/payloads/ke_payload.h>
+
+typedef struct private_log_ke_t private_log_ke_t;
+
+/**
+ * Private data of an log_ke_t object.
+ */
+struct private_log_ke_t {
+
+	/**
+	 * Implements the hook_t interface.
+	 */
+	hook_t hook;
+};
+
+METHOD(listener_t, message, bool,
+	private_log_ke_t *this, ike_sa_t *ike_sa, message_t *message,
+	bool incoming)
+{
+	if (incoming)
+	{
+		enumerator_t *enumerator, *proposals;
+		payload_t *payload;
+		ke_payload_t *ke;
+
+		enumerator = message->create_payload_enumerator(message);
+		while (enumerator->enumerate(enumerator, &payload))
+		{
+			if (payload->get_type(payload) == KEY_EXCHANGE)
+			{
+				ke = (ke_payload_t*)payload;
+				DBG1(DBG_CFG, "received DH group %N",
+					 diffie_hellman_group_names, ke->get_dh_group_number(ke));
+			}
+		}
+		enumerator->destroy(enumerator);
+	}
+	return TRUE;
+}
+
+METHOD(hook_t, destroy, void,
+	private_log_ke_t *this)
+{
+	free(this);
+}
+
+/**
+ * Create the IKE_AUTH fill hook
+ */
+hook_t *log_ke_hook_create(char *name)
+{
+	private_log_ke_t *this;
+
+	INIT(this,
+		.hook = {
+			.listener = {
+				.message = _message,
+			},
+			.destroy = _destroy,
+		},
+	);
+
+	return &this->hook;
+}