1 files changed, 184 insertions, 0 deletions
diff --git a/src/libcharon/plugins/dhcp/dhcp_transaction.c b/src/libcharon/plugins/dhcp/dhcp_transaction.c
new file mode 100644
index 000000000..83f822dd8
--- /dev/null
+++ b/src/libcharon/plugins/dhcp/dhcp_transaction.c
@@ -0,0 +1,184 @@
+/*
+ * 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 "dhcp_transaction.h"
+
+#include <utils/linked_list.h>
+
+typedef struct private_dhcp_transaction_t private_dhcp_transaction_t;
+
+/**
+ * Private data of an dhcp_transaction_t object.
+ */
+struct private_dhcp_transaction_t {
+
+	/**
+	 * Public dhcp_transaction_t interface.
+	 */
+	dhcp_transaction_t public;
+
+	/**
+	 * DHCP transaction ID
+	 */
+	u_int32_t id;
+
+	/**
+	 * Peer identity
+	 */
+	identification_t *identity;
+
+	/**
+	 * received DHCP address
+	 */
+	host_t *address;
+
+	/**
+	 * discovered DHCP server address
+	 */
+	host_t *server;
+
+	/**
+	 * List of added attributes, as attribute_entry_t
+	 */
+	linked_list_t *attributes;
+};
+
+/**
+ * Entry for an added attribute
+ */
+typedef struct {
+	configuration_attribute_type_t type;
+	chunk_t data;
+} attribute_entry_t;
+
+METHOD(dhcp_transaction_t, get_id, u_int32_t,
+	private_dhcp_transaction_t *this)
+{
+	return this->id;
+}
+
+METHOD(dhcp_transaction_t, get_identity, identification_t*,
+	private_dhcp_transaction_t *this)
+{
+	return this->identity;
+}
+
+METHOD(dhcp_transaction_t, set_address, void,
+	private_dhcp_transaction_t *this, host_t *address)
+{
+	DESTROY_IF(this->address);
+	this->address = address;
+}
+
+METHOD(dhcp_transaction_t, get_address, host_t*,
+	private_dhcp_transaction_t *this)
+{
+	return this->address;
+}
+
+METHOD(dhcp_transaction_t, set_server, void,
+	private_dhcp_transaction_t *this, host_t *server)
+{
+	DESTROY_IF(this->server);
+	this->server = server;
+}
+
+METHOD(dhcp_transaction_t, get_server, host_t*,
+	private_dhcp_transaction_t *this)
+{
+	return this->server;
+}
+
+METHOD(dhcp_transaction_t, add_attribute, void,
+	private_dhcp_transaction_t *this, configuration_attribute_type_t type,
+	chunk_t data)
+{
+	attribute_entry_t *entry;
+
+	INIT(entry,
+		.type = type,
+		.data = chunk_clone(data),
+	);
+	this->attributes->insert_last(this->attributes, entry);
+}
+
+/**
+ * Filter function to map entries to type/data
+ */
+static bool attribute_filter(void *null, attribute_entry_t **entry,
+							 configuration_attribute_type_t *type,
+							 void **dummy, chunk_t *data)
+{
+	*type = (*entry)->type;
+	*data = (*entry)->data;
+	return TRUE;
+}
+
+METHOD(dhcp_transaction_t, create_attribute_enumerator, enumerator_t*,
+	private_dhcp_transaction_t *this)
+{
+	return enumerator_create_filter(
+						this->attributes->create_enumerator(this->attributes),
+						(void*)attribute_filter, NULL, NULL);
+}
+
+/**
+ * Clean up an attribute entry
+ */
+static void attribute_entry_destroy(attribute_entry_t *entry)
+{
+	free(entry->data.ptr);
+	free(entry);
+}
+
+METHOD(dhcp_transaction_t, destroy, void,
+	private_dhcp_transaction_t *this)
+{
+	this->identity->destroy(this->identity);
+	DESTROY_IF(this->address);
+	DESTROY_IF(this->server);
+	this->attributes->destroy_function(this->attributes,
+									   (void*)attribute_entry_destroy);
+	free(this);
+}
+
+/**
+ * See header
+ */
+dhcp_transaction_t *dhcp_transaction_create(u_int32_t id,
+											identification_t *identity)
+{
+	private_dhcp_transaction_t *this;
+
+	INIT(this,
+		.public = {
+			.get_id = _get_id,
+			.get_identity = _get_identity,
+			.set_address = _set_address,
+			.get_address = _get_address,
+			.set_server = _set_server,
+			.get_server = _get_server,
+			.add_attribute = _add_attribute,
+			.create_attribute_enumerator = _create_attribute_enumerator,
+			.destroy = _destroy,
+		},
+		.id = id,
+		.identity = identity->clone(identity),
+		.attributes = linked_list_create(),
+	);
+
+	return &this->public;
+}
+