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�i�t��B�������������?�� import dbus import tuned.logs log = tuned.logs.get() class polkit(): def __init__(self): self._bus = dbus.SystemBus() self._proxy = self._bus.get_object('org.freedesktop.PolicyKit1', '/org/freedesktop/PolicyKit1/Authority', follow_name_owner_changes = True) self._authority = dbus.Interface(self._proxy, dbus_interface='org.freedesktop.PolicyKit1.Authority') def check_authorization(self, sender, action_id): """Check authorization, return codes: 1 - authorized 2 - polkit error, but authorized with fallback method 0 - unauthorized -1 - polkit error and unauthorized by the fallback method -2 - polkit error and unable to use the fallback method """ if sender is None or action_id is None: return False details = {} flags = 1 # AllowUserInteraction flag cancellation_id = "" # No cancellation id subject = ("system-bus-name", {"name" : sender}) try: ret = self._authority.CheckAuthorization(subject, action_id, details, flags, cancellation_id)[0] except (dbus.exceptions.DBusException, ValueError) as e: log.error("error querying polkit: %s" % e) # No polkit or polkit error, fallback to always allow root try: uid = self._bus.get_unix_user(sender) except dbus.exceptions.DBusException as e: log.error("error using fallback authorization method: %s" % e) return -2 if uid == 0: return 2 else: return -1 return 1 if ret else 0