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1 year ago
<?php
/*
** Zabbix
** Copyright (C) 2001-2023 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
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;
}
}