<?php /* ** Copyright (C) 2001-2025 Zabbix SIA ** ** This program is free software: you can redistribute it and/or modify it under the terms of ** the GNU Affero General Public License as published by the Free Software Foundation, version 3. ** ** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; ** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ** See the GNU Affero General Public License for more details. ** ** You should have received a copy of the GNU Affero General Public License along with this program. ** If not, see <https://www.gnu.org/licenses/>. **/ class CRegexValidator extends CValidator { /** * Error message if the is not a string. * * @var string */ public $messageInvalid; /** * Error message if the value is invalid * * @var string */ public $messageRegex; /** * Check if regular expression is valid * * @param string $value * * @return bool */ public function validate($value) { if (!is_string($value) && !is_numeric($value)) { $this->error($this->messageInvalid); return false; } // escape '/' since Zabbix server treats them as literal characters. $value = str_replace('/', '\/', $value); // validate through preg_match $error = false; set_error_handler(function ($errno, $errstr) use (&$error) { if ($errstr != '') { $error = $errstr; } }); preg_match('/'.$value.'/', ''); restore_error_handler(); if ($error) { $this->error( $this->messageRegex, $value, str_replace('preg_match(): ', '', $error) ); return false; } return true; } }