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diff --git a/dbus/dbus-bus.c b/dbus/dbus-bus.c
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+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* dbus-bus.h Convenience functions for communicating with the bus.
+ *
+ * Copyright (C) 2003 CodeFactory AB
+ *
+ * Licensed under the Academic Free License version 1.2
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "dbus-bus.h"
+#include "dbus-protocol.h"
+
+/**
+ * @defgroup DBusBus Convenience functinos for communicating with the bus.
+ * @ingroup DBus
+ * @brief Convenience functinos for communicating with the bus.
+ *
+ * @{
+ */
+
+/**
+ * Registers a connection with the bus. This is needed to send messages
+ * to other clients.
+ *
+ * @param connection The connection
+ * @param result address where a result code can be returned.
+ * @returns the service name of which the client is known as.
+ */
+char *
+dbus_bus_register_client (DBusConnection *connection,
+ DBusResultCode *result)
+{
+ DBusMessage *message, *reply;
+ DBusResultCode code;
+ char *name;
+
+ message = dbus_message_new (DBUS_SERVICE_DBUS,
+ DBUS_MESSAGE_HELLO);
+
+ if (!message)
+ {
+ dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+ return NULL;
+ }
+
+ reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
+
+ dbus_message_unref (message);
+
+ if (!reply)
+ return NULL;
+
+ code = dbus_message_get_fields (reply,
+ DBUS_TYPE_STRING, &name,
+ 0);
+ if (code != DBUS_RESULT_SUCCESS)
+ {
+ dbus_set_result (result, code);
+ return NULL;
+ }
+
+ dbus_set_result (result, DBUS_RESULT_SUCCESS);
+
+ return name;
+}
+
+/**
+ * Asks the bus to try to acquire a certain service.
+ *
+ * @param connection the connection
+ * @param service_name the service name
+ * @param flags flags
+ * @param result address where a result code can be returned.
+ * @returns a result code.
+ */
+int
+dbus_bus_acquire_service (DBusConnection *connection,
+ const char *service_name,
+ unsigned int flags,
+ DBusResultCode *result)
+{
+ DBusMessage *message, *reply;
+ int service_result;
+ DBusResultCode code;
+
+ message = dbus_message_new (DBUS_SERVICE_DBUS,
+ DBUS_MESSAGE_ACQUIRE_SERVICE);
+
+ if (!message)
+ {
+ dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+ return -1;
+ }
+
+ if (!dbus_message_append_fields (message,
+ DBUS_TYPE_STRING, service_name,
+ DBUS_TYPE_UINT32, flags,
+ 0))
+ {
+ dbus_message_unref (message);
+ dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+ return -1;
+ }
+
+ reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
+ dbus_message_unref (message);
+
+ if (!reply)
+ return -1;
+
+ code = dbus_message_get_fields (reply,
+ DBUS_TYPE_UINT32, &service_result,
+ 0);
+ if (code != DBUS_RESULT_SUCCESS)
+ {
+ dbus_set_result (result, code);
+ return -1;
+ }
+
+ dbus_set_result (result, DBUS_RESULT_SUCCESS);
+
+ return service_result;
+}
+
+/**
+ * Checks whether a certain service exists.
+ *
+ * @param connection the connection
+ * @param service_name the service name
+ * @param result address where a result code can be returned.
+ * @returns #TRUE if the service exists, #FALSE otherwise.
+ */
+dbus_bool_t
+dbus_bus_service_exists (DBusConnection *connection,
+ const char *service_name,
+ DBusResultCode *result)
+{
+ DBusMessage *message, *reply;
+ unsigned int exists;
+ DBusResultCode code;
+
+ message = dbus_message_new (DBUS_SERVICE_DBUS,
+ DBUS_MESSAGE_SERVICE_EXISTS);
+ if (!message)
+ {
+ dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+ return FALSE;
+ }
+
+ if (!dbus_message_append_fields (message,
+ DBUS_TYPE_STRING, service_name,
+ 0))
+ {
+ dbus_message_unref (message);
+ dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+ return FALSE;
+ }
+
+ reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
+ dbus_message_unref (message);
+
+ if (!reply)
+ return FALSE;
+
+ code = dbus_message_get_fields (reply,
+ DBUS_TYPE_UINT32, &exists,
+ 0);
+ if (code != DBUS_RESULT_SUCCESS)
+ {
+ dbus_set_result (result, code);
+ return FALSE;
+ }
+
+ dbus_set_result (result, DBUS_RESULT_SUCCESS);
+ return (result != FALSE);
+}
+
+/** @} */