Contao\CoreBundle\EventListener\BypassMaintenanceListener::hasAuthenticatedBackendUser PHP Метод

    private function hasAuthenticatedBackendUser(Request $request)
    {
        if (!$request->cookies->has('BE_USER_AUTH')) {
            return false;
        }
        $sessionHash = sha1(sprintf('%s%sBE_USER_AUTH', $this->session->getId(), $this->disableIpCheck ? '' : $request->getClientIp()));
        return $request->cookies->get('BE_USER_AUTH') === $sessionHash;
    }