1 | <?php |
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2 | /** |
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3 | * Zend Framework |
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4 | * |
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5 | * LICENSE |
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6 | * |
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7 | * This source file is subject to the new BSD license that is bundled |
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8 | * with this package in the file LICENSE.txt. |
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9 | * It is also available through the world-wide-web at this URL: |
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10 | * http://framework.zend.com/license/new-bsd |
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11 | * If you did not receive a copy of the license and are unable to |
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12 | * obtain it through the world-wide-web, please send an email |
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13 | * to license@zend.com so we can send you a copy immediately. |
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14 | * |
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15 | * @category Zend |
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16 | * @package Zend_Validate |
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17 | * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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18 | * @license http://framework.zend.com/license/new-bsd New BSD License |
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19 | * @version $Id: Crc32.php 22668 2010-07-25 14:50:46Z thomas $ |
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20 | */ |
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21 | |
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22 | /** |
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23 | * @see Zend_Validate_File_Hash |
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24 | */ |
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25 | require_once 'Zend/Validate/File/Hash.php'; |
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26 | |
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27 | /** |
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28 | * Validator for the crc32 hash of given files |
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29 | * |
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30 | * @category Zend |
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31 | * @package Zend_Validate |
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32 | * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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33 | * @license http://framework.zend.com/license/new-bsd New BSD License |
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34 | */ |
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35 | class Zend_Validate_File_Crc32 extends Zend_Validate_File_Hash |
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36 | { |
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37 | /** |
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38 | * @const string Error constants |
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39 | */ |
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40 | const DOES_NOT_MATCH = 'fileCrc32DoesNotMatch'; |
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41 | const NOT_DETECTED = 'fileCrc32NotDetected'; |
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42 | const NOT_FOUND = 'fileCrc32NotFound'; |
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43 | |
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44 | /** |
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45 | * @var array Error message templates |
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46 | */ |
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47 | protected $_messageTemplates = array( |
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48 | self::DOES_NOT_MATCH => "File '%value%' does not match the given crc32 hashes", |
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49 | self::NOT_DETECTED => "A crc32 hash could not be evaluated for the given file", |
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50 | self::NOT_FOUND => "File '%value%' is not readable or does not exist", |
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51 | ); |
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52 | |
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53 | /** |
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54 | * Hash of the file |
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55 | * |
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56 | * @var string |
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57 | */ |
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58 | protected $_hash; |
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59 | |
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60 | /** |
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61 | * Sets validator options |
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62 | * |
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63 | * @param string|array|Zend_Config $options |
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64 | * @return void |
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65 | */ |
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66 | public function __construct($options) |
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67 | { |
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68 | if ($options instanceof Zend_Config) { |
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69 | $options = $options->toArray(); |
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70 | } elseif (is_scalar($options)) { |
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71 | $options = array('hash1' => $options); |
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72 | } elseif (!is_array($options)) { |
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73 | require_once 'Zend/Validate/Exception.php'; |
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74 | throw new Zend_Validate_Exception('Invalid options to validator provided'); |
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75 | } |
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76 | |
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77 | $this->setCrc32($options); |
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78 | } |
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79 | |
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80 | /** |
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81 | * Returns all set crc32 hashes |
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82 | * |
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83 | * @return array |
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84 | */ |
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85 | public function getCrc32() |
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86 | { |
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87 | return $this->getHash(); |
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88 | } |
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89 | |
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90 | /** |
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91 | * Sets the crc32 hash for one or multiple files |
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92 | * |
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93 | * @param string|array $options |
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94 | * @return Zend_Validate_File_Hash Provides a fluent interface |
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95 | */ |
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96 | public function setHash($options) |
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97 | { |
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98 | if (!is_array($options)) { |
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99 | $options = array($options); |
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100 | } |
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101 | |
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102 | $options['algorithm'] = 'crc32'; |
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103 | parent::setHash($options); |
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104 | return $this; |
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105 | } |
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106 | |
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107 | /** |
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108 | * Sets the crc32 hash for one or multiple files |
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109 | * |
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110 | * @param string|array $options |
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111 | * @return Zend_Validate_File_Hash Provides a fluent interface |
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112 | */ |
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113 | public function setCrc32($options) |
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114 | { |
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115 | $this->setHash($options); |
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116 | return $this; |
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117 | } |
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118 | |
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119 | /** |
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120 | * Adds the crc32 hash for one or multiple files |
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121 | * |
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122 | * @param string|array $options |
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123 | * @return Zend_Validate_File_Hash Provides a fluent interface |
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124 | */ |
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125 | public function addHash($options) |
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126 | { |
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127 | if (!is_array($options)) { |
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128 | $options = array($options); |
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129 | } |
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130 | |
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131 | $options['algorithm'] = 'crc32'; |
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132 | parent::addHash($options); |
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133 | return $this; |
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134 | } |
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135 | |
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136 | /** |
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137 | * Adds the crc32 hash for one or multiple files |
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138 | * |
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139 | * @param string|array $options |
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140 | * @return Zend_Validate_File_Hash Provides a fluent interface |
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141 | */ |
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142 | public function addCrc32($options) |
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143 | { |
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144 | $this->addHash($options); |
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145 | return $this; |
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146 | } |
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147 | |
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148 | /** |
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149 | * Defined by Zend_Validate_Interface |
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150 | * |
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151 | * Returns true if and only if the given file confirms the set hash |
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152 | * |
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153 | * @param string $value Filename to check for hash |
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154 | * @param array $file File data from Zend_File_Transfer |
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155 | * @return boolean |
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156 | */ |
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157 | public function isValid($value, $file = null) |
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158 | { |
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159 | // Is file readable ? |
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160 | require_once 'Zend/Loader.php'; |
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161 | if (!Zend_Loader::isReadable($value)) { |
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162 | return $this->_throw($file, self::NOT_FOUND); |
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163 | } |
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164 | |
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165 | $hashes = array_unique(array_keys($this->_hash)); |
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166 | $filehash = hash_file('crc32', $value); |
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167 | if ($filehash === false) { |
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168 | return $this->_throw($file, self::NOT_DETECTED); |
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169 | } |
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170 | |
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171 | foreach($hashes as $hash) { |
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172 | if ($filehash === $hash) { |
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173 | return true; |
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174 | } |
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175 | } |
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176 | |
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177 | return $this->_throw($file, self::DOES_NOT_MATCH); |
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178 | } |
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179 | } |
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