Added a hook to send unencrypted notifies in established IKE_SAs

src/conftest/Makefile.am

@@ -4,7 +4,7 @@ AM_CFLAGS = -rdynamic
 
 conftest_SOURCES = conftest.c conftest.h config.c config.h actions.c actions.h \
 	hooks/hook.h hooks/ike_auth_fill.c hooks/unsort_message.c \
-	hooks/add_notify.c
+	hooks/add_notify.c hooks/unencrypted_notify.c
 
 INCLUDES = \
 	-I$(top_srcdir)/src/libstrongswan \

src/conftest/hooks/unencrypted_notify.c

@@ -0,0 +1,153 @@
+/*
+ * 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"
+
+typedef struct private_unencrypted_notify_t private_unencrypted_notify_t;
+
+/**
+ * Private data of an unencrypted_notify_t object.
+ */
+struct private_unencrypted_notify_t {
+
+	/**
+	 * Implements the hook_t interface.
+	 */
+	hook_t hook;
+
+	/**
+	 * ID of message send.
+	 */
+	int id;
+
+	/**
+	 * Notify type
+	 */
+	char *type;
+
+	/**
+	 * Notify data
+	 */
+	char *data;
+
+	/**
+	 * SPI of notify
+	 */
+	int spi;
+
+	/**
+	 * TRUE for a ESP protocol notify, FALSE for IKE
+	 */
+	bool esp;
+};
+
+METHOD(listener_t, ike_updown, bool,
+	private_unencrypted_notify_t *this, ike_sa_t *ike_sa, bool up)
+{
+	if (up)
+	{
+		message_t *message;
+		host_t *host;
+		notify_type_t type;
+		notify_payload_t *notify;
+		chunk_t data = chunk_empty;
+		packet_t *packet;
+
+		type = atoi(this->type);
+		if (!type)
+		{
+			type = enum_from_name(notify_type_names, this->type);
+			if (type == -1)
+			{
+				DBG1(DBG_CFG, "unknown notify: '%s', skipped", this->type);
+				return TRUE;
+			}
+		}
+		if (strncasecmp(this->data, "0x", 2) == 0)
+		{
+			data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
+			data = chunk_from_hex(data, NULL);
+		}
+		else if (data.len)
+		{
+			data = chunk_clone(chunk_create(this->data, strlen(this->data)));
+		}
+		notify = notify_payload_create_from_protocol_and_type(
+									this->esp ? PROTO_ESP : PROTO_IKE, type);
+		notify->set_spi(notify, this->spi);
+		if (data.len)
+		{
+			notify->set_notification_data(notify, data);
+			free(data.ptr);
+		}
+
+		DBG1(DBG_CFG, "injecting unencrypted INFORMATIONAL message");
+
+		message = message_create();
+		message->set_message_id(message, this->id);
+		message->set_ike_sa_id(message, ike_sa->get_id(ike_sa));
+		message->set_exchange_type(message, INFORMATIONAL);
+		message->set_request(message, TRUE);
+		host = ike_sa->get_my_host(ike_sa);
+		message->set_source(message, host->clone(host));
+		host = ike_sa->get_other_host(ike_sa);
+		message->set_destination(message, host->clone(host));
+		message->add_payload(message, &notify->payload_interface);
+		if (message->generate(message, NULL, &packet) != SUCCESS)
+		{
+			DBG1(DBG_CFG, "generating message failed");
+			message->destroy(message);
+			return TRUE;
+		}
+		message->destroy(message);
+		charon->sender->send(charon->sender, packet);
+	}
+	return TRUE;
+}
+
+METHOD(hook_t, destroy, void,
+	private_unencrypted_notify_t *this)
+{
+	free(this);
+}
+
+/**
+ * Create the IKE_AUTH fill hook
+ */
+hook_t *unencrypted_notify_hook_create(void)
+{
+	private_unencrypted_notify_t *this;
+
+	INIT(this,
+		.hook = {
+			.listener = {
+				.ike_updown = _ike_updown,
+			},
+			.destroy = _destroy,
+		},
+		.id = conftest->test->get_int(conftest->test,
+										"hooks.unencrypted_notify.id", 2),
+		.type = conftest->test->get_str(conftest->test,
+										"hooks.unencrypted_notify.type", ""),
+		.data = conftest->test->get_str(conftest->test,
+										"hooks.unencrypted_notify.data", ""),
+		.spi = conftest->test->get_int(conftest->test,
+										"hooks.unencrypted_notify.spi", 0),
+		.esp = conftest->test->get_bool(conftest->test,
+										"hooks.unencrypted_notify.esp", FALSE),
+	);
+
+	return &this->hook;
+}