+ } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Subscribe")) {
+ char *client;
+
+ if (!(client = strdup(dbus_message_get_sender(message))))
+ goto oom;
+
+ r = set_put(m->subscribed, client);
+
+ if (r < 0)
+ return bus_send_error_reply(m, message, NULL, r);
+
+ if (!(reply = dbus_message_new_method_return(message)))
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Unsubscribe")) {
+ char *client;
+
+ if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
+ return bus_send_error_reply(m, message, NULL, -ENOENT);
+
+ free(client);
+
+ if (!(reply = dbus_message_new_method_return(message)))
+ goto oom;
+