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Crc32.php
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Crc32.php 10020 2009-08-18 14:34:09Z j.fischer@metaways.de $
*/
/**
* @see Zend_Validate_File_Hash
*/
require_once 'Zend/Validate/File/Hash.php';
/**
* Validator for the crc32 hash of given files
*
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Validate_File_Crc32 extends Zend_Validate_File_Hash
{
/**
* @const string Error constants
*/
const DOES_NOT_MATCH = 'fileCrc32DoesNotMatch';
const NOT_DETECTED = 'fileCrc32NotDetected';
const NOT_FOUND = 'fileCrc32NotFound';
/**
* @var array Error message templates
*/
protected $_messageTemplates = array(
self::DOES_NOT_MATCH => "The file '%value%' does not match the given crc32 hashes",
self::NOT_DETECTED => "There was no crc32 hash detected for the given file",
self::NOT_FOUND => "The file '%value%' could not be found"
);
/**
* Hash of the file
*
* @var string
*/
protected $_hash;
/**
* Sets validator options
*
* @param string|array $options
* @return void
*/
public function __construct($options)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
} elseif (is_scalar($options)) {
$options = array('hash1' => $options);
} elseif (!is_array($options)) {
require_once 'Zend/Validate/Exception.php';
throw new Zend_Validate_Exception('Invalid options to validator provided');
}
$this->setCrc32($options);
}
/**
* Returns all set crc32 hashes
*
* @return array
*/
public function getCrc32()
{
return $this->getHash();
}
/**
* Sets the crc32 hash for one or multiple files
*
* @param string|array $options
* @return Zend_Validate_File_Hash Provides a fluent interface
*/
public function setHash($options)
{
if (!is_array($options)) {
$options = array($options);
}
$options['algorithm'] = 'crc32';
parent::setHash($options);
return $this;
}
/**
* Sets the crc32 hash for one or multiple files
*
* @param string|array $options
* @return Zend_Validate_File_Hash Provides a fluent interface
*/
public function setCrc32($options)
{
$this->setHash($options);
return $this;
}
/**
* Adds the crc32 hash for one or multiple files
*
* @param string|array $options
* @return Zend_Validate_File_Hash Provides a fluent interface
*/
public function addHash($options)
{
if (!is_array($options)) {
$options = array($options);
}
$options['algorithm'] = 'crc32';
parent::addHash($options);
return $this;
}
/**
* Adds the crc32 hash for one or multiple files
*
* @param string|array $options
* @return Zend_Validate_File_Hash Provides a fluent interface
*/
public function addCrc32($options)
{
$this->addHash($options);
return $this;
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if the given file confirms the set hash
*
* @param string $value Filename to check for hash
* @param array $file File data from Zend_File_Transfer
* @return boolean
*/
public function isValid($value, $file = null)
{
// Is file readable ?
require_once 'Zend/Loader.php';
if (!Zend_Loader::isReadable($value)) {
return $this->_throw($file, self::NOT_FOUND);
}
$hashes = array_unique(array_keys($this->_hash));
$filehash = hash_file('crc32', $value);
if ($filehash === false) {
return $this->_throw($file, self::NOT_DETECTED);
}
foreach($hashes as $hash) {
if ($filehash === $hash) {
return true;
}
}
return $this->_throw($file, self::DOES_NOT_MATCH);
}
}

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