Controller_Validator_Advanced::checkByCrackLib PHP Метод

    public function checkByCrackLib($password)
    {
        $cl = $this->app->getConfig('cracklib', null);
        if ($cl === null) {
            if (is_executable($t = '/usr/sbin/cracklib-check')) {
                $cl = $t;
            } elseif (is_executable($t = '/usr/local/sbin/cracklib-check')) {
                $cl = $t;
            } else {
                $cl = false;
            }
        }
        $password = str_replace("\r", '', $password);
        $password = str_replace("\n", '', $password);
        if (is_string($cl) && file_exists($cl) && is_executable($cl)) {
            /** @type System_ProcessIO $cl */
            $cl = $this->add('System_ProcessIO');
            $cl->exec($cl)->write_all($password);
            $out = trim($cl->read_all());
            $out = str_replace($password, '', $out);
            $out = preg_replace('/^:\\s*/', '', $out);
            if ($out == 'OK') {
                return true;
            }
            return $out;
        } else {
            if (strlen($password) < 4) {
                return 'it is WAY too short';
            }
            if (strlen($password) < 6) {
                return 'it is too short';
            }
            return true;
        }
    }