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<?php
/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
namespace Icinga\Web\Form\Validator;
use Zend_Validate_Abstract;
/**
* Validator that interprets the value as a path and checks if it's writable
*/
class WritablePathValidator extends Zend_Validate_Abstract
{
const NOT_WRITABLE = 'notWritable';
const DOES_NOT_EXIST = 'doesNotExist';
/**
* The messages to write on differen error states
*
* @var array
*
* @see Zend_Validate_Abstract::$_messageTemplates‚
*/
protected $_messageTemplates = array(
self::NOT_WRITABLE => 'Path is not writable',
self::DOES_NOT_EXIST => 'Path does not exist'
);
/**
* When true, the file or directory must exist
*
* @var bool
*/
private $requireExistence = false;
/**
* Set this validator to require the target file to exist
*/
public function setRequireExistence()
{
$this->requireExistence = true;
}
/**
* Check whether the given value is writable path
*
* @param string $value The value submitted in the form
* @param mixed $context The context of the form
*
* @return bool True when validation worked, otherwise false
*
* @see Zend_Validate_Abstract::isValid()
*/
public function isValid($value, $context = null)
{
$value = (string) $value;
$this->_setValue($value);
if ($this->requireExistence && !file_exists($value)) {
$this->_error(self::DOES_NOT_EXIST);
return false;
}
if ((file_exists($value) && is_writable($value)) ||
(is_dir(dirname($value)) && is_writable(dirname($value)))
) {
return true;
}
$this->_error(self::NOT_WRITABLE);
return false;
}
}
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