--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Validate/File/Crc32.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,179 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd     New BSD License
+ * @version   $Id: Crc32.php 22668 2010-07-25 14:50:46Z thomas $
+ */
+
+/**
+ * @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) 2005-2010 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 => "File '%value%' does not match the given crc32 hashes",
+        self::NOT_DETECTED   => "A crc32 hash could not be evaluated for the given file",
+        self::NOT_FOUND      => "File '%value%' is not readable or does not exist",
+    );
+
+    /**
+     * Hash of the file
+     *
+     * @var string
+     */
+    protected $_hash;
+
+    /**
+     * Sets validator options
+     *
+     * @param  string|array|Zend_Config $options
+     * @return void
+     */
+    public function __construct($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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