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<?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 CStringValidator extends CValidator {
/**
* If set to false, the string cannot be empty.
*
* @var bool
*/
public $empty = false;
/**
* Maximum string length.
*
* @var int
*/
public $maxLength;
/**
* Regex to match the string against.
*
* @var string
*/
public $regex;
/**
* Error message if the string is empty.
*
* @var string
*/
public $messageEmpty;
/**
* Error message if the string is too long.
*
* @var string
*/
public $messageMaxLength;
/**
* Error message if the string doesn't match the regex.
*
* @var string
*/
public $messageRegex;
/**
* Error message if not a string, integer or decimal is provided
*
* @var string
*/
public $messageInvalid;
/**
* Checks if the given string is:
* - empty
* - not too long
* - matches a certain regex
*
* @param string $value
*
* @return bool
*/
public function validate($value) {
if (!(is_string($value) || is_numeric($value))) {
$this->error($this->messageInvalid, $this->stringify($value));
return false;
}
if (zbx_empty($value)) {
if ($this->empty) {
return true;
}
else {
$this->error($this->messageEmpty);
return false;
}
}
if ($this->maxLength && mb_strlen($value) > $this->maxLength) {
$this->error($this->messageMaxLength, $value, $this->maxLength);
return false;
}
if ($this->regex && !zbx_empty($value) && !preg_match($this->regex, $value)) {
$this->error($this->messageRegex, $value);
return false;
}
return true;
}
}
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