1 files changed, 153 insertions, 0 deletions
diff --git a/src/libcharon/plugins/p_cscf/p_cscf_handler.c b/src/libcharon/plugins/p_cscf/p_cscf_handler.c
new file mode 100644
index 000000000..15313ea6a
--- /dev/null
+++ b/src/libcharon/plugins/p_cscf/p_cscf_handler.c
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2016 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 "p_cscf_handler.h"
+
+#include <networking/host.h>
+#include <utils/debug.h>
+
+typedef struct private_p_cscf_handler_t private_p_cscf_handler_t;
+
+/**
+ * Private data
+ */
+struct private_p_cscf_handler_t {
+
+	/**
+	 * Public interface
+	 */
+	p_cscf_handler_t public;
+};
+
+METHOD(attribute_handler_t, handle, bool,
+	private_p_cscf_handler_t *this, ike_sa_t *ike_sa,
+	configuration_attribute_type_t type, chunk_t data)
+{
+	host_t *server;
+	int family = AF_INET6;
+
+	switch (type)
+	{
+		case P_CSCF_IP4_ADDRESS:
+			family = AF_INET;
+			/* fall-through */
+		case P_CSCF_IP6_ADDRESS:
+			server = host_create_from_chunk(family, data, 0);
+			if (!server)
+			{
+				DBG1(DBG_CFG, "received invalid P-CSCF server IP");
+				return FALSE;
+			}
+			DBG1(DBG_CFG, "received P-CSCF server IP %H", server);
+			server->destroy(server);
+			return TRUE;
+		default:
+			return FALSE;
+	}
+}
+
+METHOD(attribute_handler_t, release, void,
+	private_p_cscf_handler_t *this, ike_sa_t *ike_sa,
+	configuration_attribute_type_t type, chunk_t data)
+{
+	switch (type)
+	{
+		case P_CSCF_IP4_ADDRESS:
+		case P_CSCF_IP6_ADDRESS:
+			/* nothing to do as we only log the server IPs */
+			break;
+		default:
+			break;
+	}
+}
+
+/**
+ * Data for attribute enumerator
+ */
+typedef struct {
+	enumerator_t public;
+	bool request_ipv4;
+	bool request_ipv6;
+} attr_enumerator_t;
+
+METHOD(enumerator_t, enumerate_attrs, bool,
+	attr_enumerator_t *this, configuration_attribute_type_t *type,
+	chunk_t *data)
+{
+	if (this->request_ipv4)
+	{
+		*type = P_CSCF_IP4_ADDRESS;
+		*data = chunk_empty;
+		this->request_ipv4 = FALSE;
+		return TRUE;
+	}
+	if (this->request_ipv6)
+	{
+		*type = P_CSCF_IP6_ADDRESS;
+		*data = chunk_empty;
+		this->request_ipv6 = FALSE;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t *,
+	private_p_cscf_handler_t *this, ike_sa_t *ike_sa,
+	linked_list_t *vips)
+{
+	attr_enumerator_t *enumerator;
+
+	if (ike_sa->get_version(ike_sa) == IKEV1)
+	{
+		return enumerator_create_empty();
+	}
+
+	INIT(enumerator,
+		.public = {
+			.enumerate = (void*)_enumerate_attrs,
+			.destroy = (void*)free,
+		},
+		.request_ipv4 = TRUE,
+		.request_ipv6 = TRUE,
+	);
+	return &enumerator->public;
+}
+
+METHOD(p_cscf_handler_t, destroy, void,
+	private_p_cscf_handler_t *this)
+{
+	free(this);
+}
+
+/**
+ * See header
+ */
+p_cscf_handler_t *p_cscf_handler_create()
+{
+	private_p_cscf_handler_t *this;
+
+	INIT(this,
+		.public = {
+			.handler = {
+				.handle = _handle,
+				.release = _release,
+				.create_attribute_enumerator = _create_attribute_enumerator,
+			},
+			.destroy = _destroy,
+		},
+	);
+
+	return &this->public;
+}