+ r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);
+ if (r < 0)
+ return 0;
+
+ r = manager_get_user_by_pid(m, pid, &user);
+ if (r <= 0)
+ return 0;
+ } else {
+ unsigned long lu;
+ const char *p;
+
+ p = startswith(path, "/org/freedesktop/login1/user/_");
+ if (!p)
+ return 0;
+
+ r = safe_atolu(p, &lu);
+ if (r < 0)
+ return 0;
+
+ user = hashmap_get(m->users, ULONG_TO_PTR(lu));
+ if (!user)
+ return 0;
+ }