+ r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);
+ if (r < 0)
+ return 0;
+
+ r = manager_get_session_by_pid(m, pid, &session);
+ if (r <= 0)
+ return 0;
+ } else {
+ _cleanup_free_ char *e = NULL;
+ const char *p;
+
+ p = startswith(path, "/org/freedesktop/login1/session/");
+ if (!p)
+ return 0;
+
+ e = bus_path_unescape(p);
+ if (!e)
+ return -ENOMEM;
+
+ session = hashmap_get(m->sessions, e);
+ if (!session)
+ return 0;
+ }