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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Validator\File;
use Zend\Validator\Exception;
/**
* Validator for the excluding file extensions
*/
class ExcludeExtension extends Extension
{
/**
* @const string Error constants
*/
const FALSE_EXTENSION = 'fileExcludeExtensionFalse';
const NOT_FOUND = 'fileExcludeExtensionNotFound';
/**
* @var array Error message templates
*/
protected $messageTemplates = [
self::FALSE_EXTENSION => "File has an incorrect extension",
self::NOT_FOUND => "File is not readable or does not exist",
];
/**
* Returns true if and only if the file extension of $value is not included in the
* set extension list
*
* @param string|array $value Real file to check for extension
* @param array $file File data from \Zend\File\Transfer\Transfer (optional)
* @return bool
*/
public function isValid($value, $file = null)
{
if (is_string($value) && is_array($file)) {
// Legacy Zend\Transfer API support
$filename = $file['name'];
$file = $file['tmp_name'];
} elseif (is_array($value)) {
if (! isset($value['tmp_name']) || ! isset($value['name'])) {
throw new Exception\InvalidArgumentException(
'Value array must be in $_FILES format'
);
}
$file = $value['tmp_name'];
$filename = $value['name'];
} else {
$file = $value;
$filename = basename($file);
}
$this->setValue($filename);
// Is file readable ?
if (empty($file) || false === is_readable($file)) {
$this->error(self::NOT_FOUND);
return false;
}
$extension = substr($filename, strrpos($filename, '.') + 1);
$extensions = $this->getExtension();
if ($this->getCase() && (! in_array($extension, $extensions))) {
return true;
} elseif (! $this->getCase()) {
foreach ($extensions as $ext) {
if (strtolower($ext) == strtolower($extension)) {
$this->error(self::FALSE_EXTENSION);
return false;
}
}
return true;
}
$this->error(self::FALSE_EXTENSION);
return false;
}
}