1 files changed, 139 insertions, 0 deletions
diff --git a/src/libcharon/sa/tasks/ike_vendor.c b/src/libcharon/sa/tasks/ike_vendor.c
new file mode 100644
index 000000000..7c435b6d1
--- /dev/null
+++ b/src/libcharon/sa/tasks/ike_vendor.c
@@ -0,0 +1,139 @@
+/*
+ * 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.
+ */
+
+#include "ike_vendor.h"
+
+#include <daemon.h>
+#include <encoding/payloads/vendor_id_payload.h>
+
+typedef struct private_ike_vendor_t private_ike_vendor_t;
+
+/**
+ * Private data of an ike_vendor_t object.
+ */
+struct private_ike_vendor_t {
+
+	/**
+	 * Public ike_vendor_t interface.
+	 */
+	ike_vendor_t public;
+
+	/**
+	 * Associated IKE_SA
+	 */
+	ike_sa_t *ike_sa;
+
+	/**
+	 * Are we the inititator of this task
+	 */
+	bool initiator;
+};
+
+/**
+ * strongSwan specific vendor ID without version, MD5("strongSwan")
+ */
+static chunk_t strongswan_vid = chunk_from_chars(
+	0x88,0x2f,0xe5,0x6d,0x6f,0xd2,0x0d,0xbc,
+	0x22,0x51,0x61,0x3b,0x2e,0xbe,0x5b,0xeb
+);
+
+METHOD(task_t, build, status_t,
+	private_ike_vendor_t *this, message_t *message)
+{
+	if (lib->settings->get_bool(lib->settings,
+								"charon.send_vendor_id", FALSE))
+	{
+		vendor_id_payload_t *vid;
+
+		vid = vendor_id_payload_create_data(chunk_clone(strongswan_vid));
+		message->add_payload(message, &vid->payload_interface);
+	}
+
+	return this->initiator ? NEED_MORE : SUCCESS;
+}
+
+METHOD(task_t, process, status_t,
+	private_ike_vendor_t *this, message_t *message)
+{
+	enumerator_t *enumerator;
+	payload_t *payload;
+
+	enumerator = message->create_payload_enumerator(message);
+	while (enumerator->enumerate(enumerator, &payload))
+	{
+		if (payload->get_type(payload) == VENDOR_ID)
+		{
+			vendor_id_payload_t *vid;
+			chunk_t data;
+
+			vid = (vendor_id_payload_t*)payload;
+			data = vid->get_data(vid);
+
+			if (chunk_equals(data, strongswan_vid))
+			{
+				DBG1(DBG_IKE, "received strongSwan vendor id");
+				this->ike_sa->enable_extension(this->ike_sa, EXT_STRONGSWAN);
+			}
+			else
+			{
+				DBG1(DBG_ENC, "received unknown vendor id: %#B", &data);
+			}
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	return this->initiator ? SUCCESS : NEED_MORE;
+}
+
+METHOD(task_t, migrate, void,
+	private_ike_vendor_t *this, ike_sa_t *ike_sa)
+{
+	this->ike_sa = ike_sa;
+}
+
+METHOD(task_t, get_type, task_type_t,
+	private_ike_vendor_t *this)
+{
+	return IKE_VENDOR;
+}
+
+METHOD(task_t, destroy, void,
+	private_ike_vendor_t *this)
+{
+	free(this);
+}
+
+/**
+ * See header
+ */
+ike_vendor_t *ike_vendor_create(ike_sa_t *ike_sa, bool initiator)
+{
+	private_ike_vendor_t *this;
+
+	INIT(this,
+		.public.task = {
+			.build = _build,
+			.process = _process,
+			.migrate = _migrate,
+			.get_type = _get_type,
+			.destroy = _destroy,
+		},
+		.initiator = initiator,
+		.ike_sa = ike_sa,
+	);
+
+	return &this->public;
+}
+