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Crc32.php

180 lines

1	<?php
2	/**
3	* Zend Framework
4	*
5	* LICENSE
6	*
7	* This source file is subject to the new BSD license that is bundled
8	* with this package in the file LICENSE.txt.
9	* It is also available through the world-wide-web at this URL:
10	* http://framework.zend.com/license/new-bsd
11	* If you did not receive a copy of the license and are unable to
12	* obtain it through the world-wide-web, please send an email
13	* to license@zend.com so we can send you a copy immediately.
14	*
15	* @category Zend
16	* @package Zend_Validate
17	* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
18	* @license http://framework.zend.com/license/new-bsd New BSD License
19	* @version $Id: Crc32.php 23775 2011-03-01 17:25:24Z ralph $
20	*/
21
22	/**
23	* @see Zend_Validate_File_Hash
24	*/
25	// require_once 'Zend/Validate/File/Hash.php';
26
27	/**
28	* Validator for the crc32 hash of given files
29	*
30	* @category Zend
31	* @package Zend_Validate
32	* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
33	* @license http://framework.zend.com/license/new-bsd New BSD License
34	*/
35	class Zend_Validate_File_Crc32 extends Zend_Validate_File_Hash
36	{
37	/**
38	* @const string Error constants
39	*/
40	const DOES_NOT_MATCH = 'fileCrc32DoesNotMatch';
41	const NOT_DETECTED = 'fileCrc32NotDetected';
42	const NOT_FOUND = 'fileCrc32NotFound';
43
44	/**
45	* @var array Error message templates
46	*/
47	protected $_messageTemplates = array(
48	self::DOES_NOT_MATCH => "File '%value%' does not match the given crc32 hashes",
49	self::NOT_DETECTED => "A crc32 hash could not be evaluated for the given file",
50	self::NOT_FOUND => "File '%value%' is not readable or does not exist",
51	);
52
53	/**
54	* Hash of the file
55	*
56	* @var string
57	*/
58	protected $_hash;
59
60	/**
61	* Sets validator options
62	*
63	* @param string\|array\|Zend_Config $options
64	* @return void
65	*/
66	public function __construct($options)
67	{
68	if ($options instanceof Zend_Config) {
69	$options = $options->toArray();
70	} elseif (is_scalar($options)) {
71	$options = array('hash1' => $options);
72	} elseif (!is_array($options)) {
73	// require_once 'Zend/Validate/Exception.php';
74	throw new Zend_Validate_Exception('Invalid options to validator provided');
75	}
76
77	$this->setCrc32($options);
78	}
79
80	/**
81	* Returns all set crc32 hashes
82	*
83	* @return array
84	*/
85	public function getCrc32()
86	{
87	return $this->getHash();
88	}
89
90	/**
91	* Sets the crc32 hash for one or multiple files
92	*
93	* @param string\|array $options
94	* @return Zend_Validate_File_Hash Provides a fluent interface
95	*/
96	public function setHash($options)
97	{
98	if (!is_array($options)) {
99	$options = array($options);
100	}
101
102	$options['algorithm'] = 'crc32';
103	parent::setHash($options);
104	return $this;
105	}
106
107	/**
108	* Sets the crc32 hash for one or multiple files
109	*
110	* @param string\|array $options
111	* @return Zend_Validate_File_Hash Provides a fluent interface
112	*/
113	public function setCrc32($options)
114	{
115	$this->setHash($options);
116	return $this;
117	}
118
119	/**
120	* Adds the crc32 hash for one or multiple files
121	*
122	* @param string\|array $options
123	* @return Zend_Validate_File_Hash Provides a fluent interface
124	*/
125	public function addHash($options)
126	{
127	if (!is_array($options)) {
128	$options = array($options);
129	}
130
131	$options['algorithm'] = 'crc32';
132	parent::addHash($options);
133	return $this;
134	}
135
136	/**
137	* Adds the crc32 hash for one or multiple files
138	*
139	* @param string\|array $options
140	* @return Zend_Validate_File_Hash Provides a fluent interface
141	*/
142	public function addCrc32($options)
143	{
144	$this->addHash($options);
145	return $this;
146	}
147
148	/**
149	* Defined by Zend_Validate_Interface
150	*
151	* Returns true if and only if the given file confirms the set hash
152	*
153	* @param string $value Filename to check for hash
154	* @param array $file File data from Zend_File_Transfer
155	* @return boolean
156	*/
157	public function isValid($value, $file = null)
158	{
159	// Is file readable ?
160	// require_once 'Zend/Loader.php';
161	if (!Zend_Loader::isReadable($value)) {
162	return $this->_throw($file, self::NOT_FOUND);
163	}
164
165	$hashes = array_unique(array_keys($this->_hash));
166	$filehash = hash_file('crc32', $value);
167	if ($filehash === false) {
168	return $this->_throw($file, self::NOT_DETECTED);
169	}
170
171	foreach($hashes as $hash) {
172	if ($filehash === $hash) {
173	return true;
174	}
175	}
176
177	return $this->_throw($file, self::DOES_NOT_MATCH);
178	}
179	}
180