IntranetUser::onBeforeAction

public function onBeforeAction(Event $event)
{
	if (!Util::isIntranetUser())
	{
		Context::getCurrent()->getResponse()->setStatus(403);
		$this->addError(new Error(
			Loc::getMessage('INTRANET_ACTIONFILTER_ALLOWED_ONLY_INTRANET_USER'),
			self::ERROR_ALLOWED_ONLY_INTRANET_USER
		));

		return new EventResult(EventResult::ERROR, null, null, $this);
	}

	return null;
}