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authordavehauenstein <davehauenstein@d4e419ec-0920-11de-bbfd-a7c1bc4c261e>2009-04-15 22:06:42 +0000
committerdavehauenstein <davehauenstein@d4e419ec-0920-11de-bbfd-a7c1bc4c261e>2009-04-15 22:06:42 +0000
commitc53d8d026021f97075fb2f4940ba22793c38fb6e (patch)
treec5d7865bc0fd226ecc7525d7de8a1d0b0c5c89fd /lib/Zend/Validate/File/Hash.php
parenta414fcee8e7dc733443c6a971162d0dd9d0e723f (diff)
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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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: $
+ */
+
+/**
+ * @see Zend_Validate_Abstract
+ */
+require_once 'Zend/Validate/Abstract.php';
+
+/**
+ * Validator for the hash of given files
+ *
+ * @category Zend
+ * @package Zend_Validate
+ * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Validate_File_Hash extends Zend_Validate_Abstract
+{
+ /**
+ * @const string Error constants
+ */
+ const DOES_NOT_MATCH = 'fileHashDoesNotMatch';
+ const NOT_DETECTED = 'fileHashHashNotDetected';
+ const NOT_FOUND = 'fileHashNotFound';
+
+ /**
+ * @var array Error message templates
+ */
+ protected $_messageTemplates = array(
+ self::DOES_NOT_MATCH => "The file '%value%' does not match the given hashes",
+ self::NOT_DETECTED => "There was no 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');
+ }
+
+ if (1 < func_num_args()) {
+ trigger_error('Multiple constructor options are deprecated in favor of a single options array', E_USER_NOTICE);
+ $options['algorithm'] = func_get_arg(1);
+ }
+
+ $this->setHash($options);
+ }
+
+ /**
+ * Returns the set hash values as array, the hash as key and the algorithm the value
+ *
+ * @return array
+ */
+ public function getHash()
+ {
+ return $this->_hash;
+ }
+
+ /**
+ * Sets the hash for one or multiple files
+ *
+ * @param string|array $options
+ * @return Zend_Validate_File_Hash Provides a fluent interface
+ */
+ public function setHash($options)
+ {
+ $this->_hash = null;
+ $this->addHash($options);
+
+ return $this;
+ }
+
+ /**
+ * Adds the 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_string($options)) {
+ $options = array($options);
+ } else if (!is_array($options)) {
+ require_once 'Zend/Validate/Exception.php';
+ throw new Zend_Validate_Exception("False parameter given");
+ }
+
+ $known = hash_algos();
+ if (!isset($options['algorithm'])) {
+ $algorithm = 'crc32';
+ } else {
+ $algorithm = $options['algorithm'];
+ unset($options['algorithm']);
+ }
+
+ if (!in_array($algorithm, $known)) {
+ require_once 'Zend/Validate/Exception.php';
+ throw new Zend_Validate_Exception("Unknown algorithm '{$algorithm}'");
+ }
+
+ foreach ($options as $value) {
+ $this->_hash[$value] = $algorithm;
+ }
+
+ 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);
+ }
+
+ $algos = array_unique(array_values($this->_hash));
+ $hashes = array_unique(array_keys($this->_hash));
+ foreach ($algos as $algorithm) {
+ $filehash = hash_file($algorithm, $value);
+ if ($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);
+ }
+
+ /**
+ * Throws an error of the given type
+ *
+ * @param string $file
+ * @param string $errorType
+ * @return false
+ */
+ protected function _throw($file, $errorType)
+ {
+ if ($file !== null) {
+ $this->_value = $file['name'];
+ }
+
+ $this->_error($errorType);
+ return false;
+ }
+}