1 | <?php |
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2 | ///////////////////////////////////////////////////////////////// |
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3 | /// getID3() by James Heinrich <info@getid3.org> // |
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4 | // available at http://getid3.sourceforge.net // |
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5 | // or http://www.getid3.org // |
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6 | ///////////////////////////////////////////////////////////////// |
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7 | // See readme.txt for more details // |
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8 | ///////////////////////////////////////////////////////////////// |
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9 | // // |
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10 | // module.archive.zip.php // |
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11 | // module for analyzing pkZip files // |
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12 | // dependencies: NONE // |
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13 | // /// |
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14 | ///////////////////////////////////////////////////////////////// |
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15 | |
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16 | |
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17 | class getid3_zip |
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18 | { |
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19 | |
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20 | function getid3_zip(&$fd, &$ThisFileInfo) { |
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21 | |
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22 | $ThisFileInfo['fileformat'] = 'zip'; |
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23 | $ThisFileInfo['zip']['encoding'] = 'ISO-8859-1'; |
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24 | $ThisFileInfo['zip']['files'] = array(); |
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25 | |
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26 | $ThisFileInfo['zip']['compressed_size'] = 0; |
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27 | $ThisFileInfo['zip']['uncompressed_size'] = 0; |
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28 | $ThisFileInfo['zip']['entries_count'] = 0; |
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29 | |
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30 | if ($ThisFileInfo['filesize'] < pow(2, 31)) { |
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31 | $EOCDsearchData = ''; |
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32 | $EOCDsearchCounter = 0; |
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33 | while ($EOCDsearchCounter++ < 512) { |
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34 | |
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35 | fseek($fd, -128 * $EOCDsearchCounter, SEEK_END); |
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36 | $EOCDsearchData = fread($fd, 128).$EOCDsearchData; |
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37 | |
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38 | if (strstr($EOCDsearchData, 'PK'."\x05\x06")) { |
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39 | |
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40 | $EOCDposition = strpos($EOCDsearchData, 'PK'."\x05\x06"); |
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41 | fseek($fd, (-128 * $EOCDsearchCounter) + $EOCDposition, SEEK_END); |
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42 | $ThisFileInfo['zip']['end_central_directory'] = $this->ZIPparseEndOfCentralDirectory($fd); |
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43 | |
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44 | fseek($fd, $ThisFileInfo['zip']['end_central_directory']['directory_offset'], SEEK_SET); |
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45 | $ThisFileInfo['zip']['entries_count'] = 0; |
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46 | while ($centraldirectoryentry = $this->ZIPparseCentralDirectory($fd)) { |
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47 | $ThisFileInfo['zip']['central_directory'][] = $centraldirectoryentry; |
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48 | $ThisFileInfo['zip']['entries_count']++; |
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49 | $ThisFileInfo['zip']['compressed_size'] += $centraldirectoryentry['compressed_size']; |
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50 | $ThisFileInfo['zip']['uncompressed_size'] += $centraldirectoryentry['uncompressed_size']; |
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51 | |
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52 | if ($centraldirectoryentry['uncompressed_size'] > 0) { |
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53 | $ThisFileInfo['zip']['files'] = getid3_lib::array_merge_clobber($ThisFileInfo['zip']['files'], getid3_lib::CreateDeepArray($centraldirectoryentry['filename'], '/', $centraldirectoryentry['uncompressed_size'])); |
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54 | } |
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55 | } |
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56 | |
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57 | if ($ThisFileInfo['zip']['entries_count'] == 0) { |
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58 | $ThisFileInfo['error'][] = 'No Central Directory entries found (truncated file?)'; |
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59 | return false; |
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60 | } |
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61 | |
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62 | if (!empty($ThisFileInfo['zip']['end_central_directory']['comment'])) { |
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63 | $ThisFileInfo['zip']['comments']['comment'][] = $ThisFileInfo['zip']['end_central_directory']['comment']; |
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64 | } |
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65 | |
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66 | if (isset($ThisFileInfo['zip']['central_directory'][0]['compression_method'])) { |
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67 | $ThisFileInfo['zip']['compression_method'] = $ThisFileInfo['zip']['central_directory'][0]['compression_method']; |
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68 | } |
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69 | if (isset($ThisFileInfo['zip']['central_directory'][0]['flags']['compression_speed'])) { |
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70 | $ThisFileInfo['zip']['compression_speed'] = $ThisFileInfo['zip']['central_directory'][0]['flags']['compression_speed']; |
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71 | } |
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72 | if (isset($ThisFileInfo['zip']['compression_method']) && ($ThisFileInfo['zip']['compression_method'] == 'store') && !isset($ThisFileInfo['zip']['compression_speed'])) { |
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73 | $ThisFileInfo['zip']['compression_speed'] = 'store'; |
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74 | } |
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75 | |
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76 | return true; |
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77 | |
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78 | } |
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79 | } |
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80 | } |
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81 | |
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82 | if ($this->getZIPentriesFilepointer($fd, $ThisFileInfo)) { |
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83 | |
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84 | // central directory couldn't be found and/or parsed |
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85 | // scan through actual file data entries, recover as much as possible from probable trucated file |
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86 | if ($ThisFileInfo['zip']['compressed_size'] > ($ThisFileInfo['filesize'] - 46 - 22)) { |
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87 | $ThisFileInfo['error'][] = 'Warning: Truncated file! - Total compressed file sizes ('.$ThisFileInfo['zip']['compressed_size'].' bytes) is greater than filesize minus Central Directory and End Of Central Directory structures ('.($ThisFileInfo['filesize'] - 46 - 22).' bytes)'; |
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88 | } |
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89 | $ThisFileInfo['error'][] = 'Cannot find End Of Central Directory - returned list of files in [zip][entries] array may not be complete'; |
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90 | foreach ($ThisFileInfo['zip']['entries'] as $key => $valuearray) { |
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91 | $ThisFileInfo['zip']['files'][$valuearray['filename']] = $valuearray['uncompressed_size']; |
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92 | } |
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93 | return true; |
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94 | |
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95 | } else { |
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96 | |
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97 | unset($ThisFileInfo['zip']); |
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98 | $ThisFileInfo['fileformat'] = ''; |
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99 | $ThisFileInfo['error'][] = 'Cannot find End Of Central Directory (truncated file?)'; |
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100 | return false; |
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101 | |
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102 | } |
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103 | } |
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104 | |
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105 | |
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106 | function getZIPHeaderFilepointerTopDown(&$fd, &$ThisFileInfo) { |
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107 | $ThisFileInfo['fileformat'] = 'zip'; |
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108 | |
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109 | $ThisFileInfo['zip']['compressed_size'] = 0; |
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110 | $ThisFileInfo['zip']['uncompressed_size'] = 0; |
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111 | $ThisFileInfo['zip']['entries_count'] = 0; |
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112 | |
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113 | rewind($fd); |
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114 | while ($fileentry = $this->ZIPparseLocalFileHeader($fd)) { |
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115 | $ThisFileInfo['zip']['entries'][] = $fileentry; |
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116 | $ThisFileInfo['zip']['entries_count']++; |
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117 | } |
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118 | if ($ThisFileInfo['zip']['entries_count'] == 0) { |
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119 | $ThisFileInfo['error'][] = 'No Local File Header entries found'; |
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120 | return false; |
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121 | } |
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122 | |
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123 | $ThisFileInfo['zip']['entries_count'] = 0; |
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124 | while ($centraldirectoryentry = $this->ZIPparseCentralDirectory($fd)) { |
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125 | $ThisFileInfo['zip']['central_directory'][] = $centraldirectoryentry; |
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126 | $ThisFileInfo['zip']['entries_count']++; |
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127 | $ThisFileInfo['zip']['compressed_size'] += $centraldirectoryentry['compressed_size']; |
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128 | $ThisFileInfo['zip']['uncompressed_size'] += $centraldirectoryentry['uncompressed_size']; |
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129 | } |
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130 | if ($ThisFileInfo['zip']['entries_count'] == 0) { |
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131 | $ThisFileInfo['error'][] = 'No Central Directory entries found (truncated file?)'; |
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132 | return false; |
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133 | } |
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134 | |
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135 | if ($EOCD = $this->ZIPparseEndOfCentralDirectory($fd)) { |
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136 | $ThisFileInfo['zip']['end_central_directory'] = $EOCD; |
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137 | } else { |
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138 | $ThisFileInfo['error'][] = 'No End Of Central Directory entry found (truncated file?)'; |
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139 | return false; |
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140 | } |
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141 | |
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142 | if (!empty($ThisFileInfo['zip']['end_central_directory']['comment'])) { |
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143 | $ThisFileInfo['zip']['comments']['comment'][] = $ThisFileInfo['zip']['end_central_directory']['comment']; |
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144 | } |
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145 | |
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146 | return true; |
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147 | } |
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148 | |
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149 | |
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150 | function getZIPentriesFilepointer(&$fd, &$ThisFileInfo) { |
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151 | $ThisFileInfo['zip']['compressed_size'] = 0; |
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152 | $ThisFileInfo['zip']['uncompressed_size'] = 0; |
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153 | $ThisFileInfo['zip']['entries_count'] = 0; |
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154 | |
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155 | rewind($fd); |
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156 | while ($fileentry = $this->ZIPparseLocalFileHeader($fd)) { |
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157 | $ThisFileInfo['zip']['entries'][] = $fileentry; |
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158 | $ThisFileInfo['zip']['entries_count']++; |
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159 | $ThisFileInfo['zip']['compressed_size'] += $fileentry['compressed_size']; |
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160 | $ThisFileInfo['zip']['uncompressed_size'] += $fileentry['uncompressed_size']; |
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161 | } |
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162 | if ($ThisFileInfo['zip']['entries_count'] == 0) { |
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163 | $ThisFileInfo['error'][] = 'No Local File Header entries found'; |
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164 | return false; |
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165 | } |
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166 | |
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167 | return true; |
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168 | } |
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169 | |
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170 | |
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171 | function ZIPparseLocalFileHeader(&$fd) { |
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172 | $LocalFileHeader['offset'] = ftell($fd); |
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173 | |
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174 | $ZIPlocalFileHeader = fread($fd, 30); |
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175 | |
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176 | $LocalFileHeader['raw']['signature'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 0, 4)); |
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177 | if ($LocalFileHeader['raw']['signature'] != 0x04034B50) { |
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178 | // invalid Local File Header Signature |
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179 | fseek($fd, $LocalFileHeader['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly |
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180 | return false; |
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181 | } |
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182 | $LocalFileHeader['raw']['extract_version'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 4, 2)); |
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183 | $LocalFileHeader['raw']['general_flags'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 6, 2)); |
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184 | $LocalFileHeader['raw']['compression_method'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 8, 2)); |
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185 | $LocalFileHeader['raw']['last_mod_file_time'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 10, 2)); |
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186 | $LocalFileHeader['raw']['last_mod_file_date'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 12, 2)); |
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187 | $LocalFileHeader['raw']['crc_32'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 14, 4)); |
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188 | $LocalFileHeader['raw']['compressed_size'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 18, 4)); |
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189 | $LocalFileHeader['raw']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 22, 4)); |
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190 | $LocalFileHeader['raw']['filename_length'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 26, 2)); |
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191 | $LocalFileHeader['raw']['extra_field_length'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 28, 2)); |
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192 | |
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193 | $LocalFileHeader['extract_version'] = sprintf('%1.1f', $LocalFileHeader['raw']['extract_version'] / 10); |
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194 | $LocalFileHeader['host_os'] = $this->ZIPversionOSLookup(($LocalFileHeader['raw']['extract_version'] & 0xFF00) >> 8); |
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195 | $LocalFileHeader['compression_method'] = $this->ZIPcompressionMethodLookup($LocalFileHeader['raw']['compression_method']); |
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196 | $LocalFileHeader['compressed_size'] = $LocalFileHeader['raw']['compressed_size']; |
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197 | $LocalFileHeader['uncompressed_size'] = $LocalFileHeader['raw']['uncompressed_size']; |
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198 | $LocalFileHeader['flags'] = $this->ZIPparseGeneralPurposeFlags($LocalFileHeader['raw']['general_flags'], $LocalFileHeader['raw']['compression_method']); |
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199 | $LocalFileHeader['last_modified_timestamp'] = $this->DOStime2UNIXtime($LocalFileHeader['raw']['last_mod_file_date'], $LocalFileHeader['raw']['last_mod_file_time']); |
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200 | |
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201 | $FilenameExtrafieldLength = $LocalFileHeader['raw']['filename_length'] + $LocalFileHeader['raw']['extra_field_length']; |
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202 | if ($FilenameExtrafieldLength > 0) { |
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203 | $ZIPlocalFileHeader .= fread($fd, $FilenameExtrafieldLength); |
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204 | |
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205 | if ($LocalFileHeader['raw']['filename_length'] > 0) { |
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206 | $LocalFileHeader['filename'] = substr($ZIPlocalFileHeader, 30, $LocalFileHeader['raw']['filename_length']); |
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207 | } |
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208 | if ($LocalFileHeader['raw']['extra_field_length'] > 0) { |
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209 | $LocalFileHeader['raw']['extra_field_data'] = substr($ZIPlocalFileHeader, 30 + $LocalFileHeader['raw']['filename_length'], $LocalFileHeader['raw']['extra_field_length']); |
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210 | } |
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211 | } |
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212 | |
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213 | $LocalFileHeader['data_offset'] = ftell($fd); |
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214 | //$LocalFileHeader['compressed_data'] = fread($fd, $LocalFileHeader['raw']['compressed_size']); |
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215 | fseek($fd, $LocalFileHeader['raw']['compressed_size'], SEEK_CUR); |
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216 | |
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217 | if ($LocalFileHeader['flags']['data_descriptor_used']) { |
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218 | $DataDescriptor = fread($fd, 12); |
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219 | $LocalFileHeader['data_descriptor']['crc_32'] = getid3_lib::LittleEndian2Int(substr($DataDescriptor, 0, 4)); |
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220 | $LocalFileHeader['data_descriptor']['compressed_size'] = getid3_lib::LittleEndian2Int(substr($DataDescriptor, 4, 4)); |
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221 | $LocalFileHeader['data_descriptor']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($DataDescriptor, 8, 4)); |
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222 | } |
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223 | |
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224 | return $LocalFileHeader; |
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225 | } |
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226 | |
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227 | |
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228 | function ZIPparseCentralDirectory(&$fd) { |
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229 | $CentralDirectory['offset'] = ftell($fd); |
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230 | |
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231 | $ZIPcentralDirectory = fread($fd, 46); |
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232 | |
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233 | $CentralDirectory['raw']['signature'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 0, 4)); |
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234 | if ($CentralDirectory['raw']['signature'] != 0x02014B50) { |
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235 | // invalid Central Directory Signature |
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236 | fseek($fd, $CentralDirectory['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly |
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237 | return false; |
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238 | } |
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239 | $CentralDirectory['raw']['create_version'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 4, 2)); |
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240 | $CentralDirectory['raw']['extract_version'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 6, 2)); |
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241 | $CentralDirectory['raw']['general_flags'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 8, 2)); |
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242 | $CentralDirectory['raw']['compression_method'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 10, 2)); |
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243 | $CentralDirectory['raw']['last_mod_file_time'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 12, 2)); |
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244 | $CentralDirectory['raw']['last_mod_file_date'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 14, 2)); |
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245 | $CentralDirectory['raw']['crc_32'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 16, 4)); |
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246 | $CentralDirectory['raw']['compressed_size'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 20, 4)); |
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247 | $CentralDirectory['raw']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 24, 4)); |
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248 | $CentralDirectory['raw']['filename_length'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 28, 2)); |
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249 | $CentralDirectory['raw']['extra_field_length'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 30, 2)); |
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250 | $CentralDirectory['raw']['file_comment_length'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 32, 2)); |
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251 | $CentralDirectory['raw']['disk_number_start'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 34, 2)); |
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252 | $CentralDirectory['raw']['internal_file_attrib'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 36, 2)); |
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253 | $CentralDirectory['raw']['external_file_attrib'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 38, 4)); |
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254 | $CentralDirectory['raw']['local_header_offset'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 42, 4)); |
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255 | |
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256 | $CentralDirectory['entry_offset'] = $CentralDirectory['raw']['local_header_offset']; |
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257 | $CentralDirectory['create_version'] = sprintf('%1.1f', $CentralDirectory['raw']['create_version'] / 10); |
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258 | $CentralDirectory['extract_version'] = sprintf('%1.1f', $CentralDirectory['raw']['extract_version'] / 10); |
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259 | $CentralDirectory['host_os'] = $this->ZIPversionOSLookup(($CentralDirectory['raw']['extract_version'] & 0xFF00) >> 8); |
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260 | $CentralDirectory['compression_method'] = $this->ZIPcompressionMethodLookup($CentralDirectory['raw']['compression_method']); |
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261 | $CentralDirectory['compressed_size'] = $CentralDirectory['raw']['compressed_size']; |
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262 | $CentralDirectory['uncompressed_size'] = $CentralDirectory['raw']['uncompressed_size']; |
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263 | $CentralDirectory['flags'] = $this->ZIPparseGeneralPurposeFlags($CentralDirectory['raw']['general_flags'], $CentralDirectory['raw']['compression_method']); |
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264 | $CentralDirectory['last_modified_timestamp'] = $this->DOStime2UNIXtime($CentralDirectory['raw']['last_mod_file_date'], $CentralDirectory['raw']['last_mod_file_time']); |
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265 | |
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266 | $FilenameExtrafieldCommentLength = $CentralDirectory['raw']['filename_length'] + $CentralDirectory['raw']['extra_field_length'] + $CentralDirectory['raw']['file_comment_length']; |
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267 | if ($FilenameExtrafieldCommentLength > 0) { |
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268 | $FilenameExtrafieldComment = fread($fd, $FilenameExtrafieldCommentLength); |
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269 | |
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270 | if ($CentralDirectory['raw']['filename_length'] > 0) { |
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271 | $CentralDirectory['filename'] = substr($FilenameExtrafieldComment, 0, $CentralDirectory['raw']['filename_length']); |
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272 | } |
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273 | if ($CentralDirectory['raw']['extra_field_length'] > 0) { |
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274 | $CentralDirectory['raw']['extra_field_data'] = substr($FilenameExtrafieldComment, $CentralDirectory['raw']['filename_length'], $CentralDirectory['raw']['extra_field_length']); |
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275 | } |
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276 | if ($CentralDirectory['raw']['file_comment_length'] > 0) { |
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277 | $CentralDirectory['file_comment'] = substr($FilenameExtrafieldComment, $CentralDirectory['raw']['filename_length'] + $CentralDirectory['raw']['extra_field_length'], $CentralDirectory['raw']['file_comment_length']); |
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278 | } |
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279 | } |
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280 | |
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281 | return $CentralDirectory; |
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282 | } |
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283 | |
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284 | function ZIPparseEndOfCentralDirectory(&$fd) { |
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285 | $EndOfCentralDirectory['offset'] = ftell($fd); |
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286 | |
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287 | $ZIPendOfCentralDirectory = fread($fd, 22); |
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288 | |
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289 | $EndOfCentralDirectory['signature'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 0, 4)); |
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290 | if ($EndOfCentralDirectory['signature'] != 0x06054B50) { |
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291 | // invalid End Of Central Directory Signature |
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292 | fseek($fd, $EndOfCentralDirectory['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly |
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293 | return false; |
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294 | } |
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295 | $EndOfCentralDirectory['disk_number_current'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 4, 2)); |
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296 | $EndOfCentralDirectory['disk_number_start_directory'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 6, 2)); |
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297 | $EndOfCentralDirectory['directory_entries_this_disk'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 8, 2)); |
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298 | $EndOfCentralDirectory['directory_entries_total'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 10, 2)); |
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299 | $EndOfCentralDirectory['directory_size'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 12, 4)); |
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300 | $EndOfCentralDirectory['directory_offset'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 16, 4)); |
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301 | $EndOfCentralDirectory['comment_length'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 20, 2)); |
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302 | |
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303 | if ($EndOfCentralDirectory['comment_length'] > 0) { |
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304 | $EndOfCentralDirectory['comment'] = fread($fd, $EndOfCentralDirectory['comment_length']); |
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305 | } |
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306 | |
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307 | return $EndOfCentralDirectory; |
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308 | } |
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309 | |
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310 | |
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311 | function ZIPparseGeneralPurposeFlags($flagbytes, $compressionmethod) { |
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312 | $ParsedFlags['encrypted'] = (bool) ($flagbytes & 0x0001); |
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313 | |
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314 | switch ($compressionmethod) { |
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315 | case 6: |
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316 | $ParsedFlags['dictionary_size'] = (($flagbytes & 0x0002) ? 8192 : 4096); |
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317 | $ParsedFlags['shannon_fano_trees'] = (($flagbytes & 0x0004) ? 3 : 2); |
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318 | break; |
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319 | |
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320 | case 8: |
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321 | case 9: |
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322 | switch (($flagbytes & 0x0006) >> 1) { |
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323 | case 0: |
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324 | $ParsedFlags['compression_speed'] = 'normal'; |
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325 | break; |
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326 | case 1: |
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327 | $ParsedFlags['compression_speed'] = 'maximum'; |
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328 | break; |
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329 | case 2: |
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330 | $ParsedFlags['compression_speed'] = 'fast'; |
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331 | break; |
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332 | case 3: |
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333 | $ParsedFlags['compression_speed'] = 'superfast'; |
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334 | break; |
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335 | } |
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336 | break; |
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337 | } |
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338 | $ParsedFlags['data_descriptor_used'] = (bool) ($flagbytes & 0x0008); |
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339 | |
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340 | return $ParsedFlags; |
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341 | } |
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342 | |
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343 | |
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344 | function ZIPversionOSLookup($index) { |
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345 | static $ZIPversionOSLookup = array( |
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346 | 0 => 'MS-DOS and OS/2 (FAT / VFAT / FAT32 file systems)', |
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347 | 1 => 'Amiga', |
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348 | 2 => 'OpenVMS', |
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349 | 3 => 'Unix', |
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350 | 4 => 'VM/CMS', |
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351 | 5 => 'Atari ST', |
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352 | 6 => 'OS/2 H.P.F.S.', |
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353 | 7 => 'Macintosh', |
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354 | 8 => 'Z-System', |
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355 | 9 => 'CP/M', |
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356 | 10 => 'Windows NTFS', |
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357 | 11 => 'MVS', |
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358 | 12 => 'VSE', |
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359 | 13 => 'Acorn Risc', |
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360 | 14 => 'VFAT', |
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361 | 15 => 'Alternate MVS', |
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362 | 16 => 'BeOS', |
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363 | 17 => 'Tandem' |
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364 | ); |
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365 | |
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366 | return (isset($ZIPversionOSLookup[$index]) ? $ZIPversionOSLookup[$index] : '[unknown]'); |
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367 | } |
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368 | |
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369 | function ZIPcompressionMethodLookup($index) { |
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370 | static $ZIPcompressionMethodLookup = array( |
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371 | 0 => 'store', |
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372 | 1 => 'shrink', |
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373 | 2 => 'reduce-1', |
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374 | 3 => 'reduce-2', |
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375 | 4 => 'reduce-3', |
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376 | 5 => 'reduce-4', |
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377 | 6 => 'implode', |
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378 | 7 => 'tokenize', |
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379 | 8 => 'deflate', |
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380 | 9 => 'deflate64', |
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381 | 10 => 'PKWARE Date Compression Library Imploding' |
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382 | ); |
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383 | |
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384 | return (isset($ZIPcompressionMethodLookup[$index]) ? $ZIPcompressionMethodLookup[$index] : '[unknown]'); |
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385 | } |
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386 | |
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387 | function DOStime2UNIXtime($DOSdate, $DOStime) { |
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388 | // wFatDate |
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389 | // Specifies the MS-DOS date. The date is a packed 16-bit value with the following format: |
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390 | // Bits Contents |
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391 | // 0-4 Day of the month (1-31) |
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392 | // 5-8 Month (1 = January, 2 = February, and so on) |
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393 | // 9-15 Year offset from 1980 (add 1980 to get actual year) |
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394 | |
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395 | $UNIXday = ($DOSdate & 0x001F); |
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396 | $UNIXmonth = (($DOSdate & 0x01E0) >> 5); |
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397 | $UNIXyear = (($DOSdate & 0xFE00) >> 9) + 1980; |
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398 | |
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399 | // wFatTime |
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400 | // Specifies the MS-DOS time. The time is a packed 16-bit value with the following format: |
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401 | // Bits Contents |
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402 | // 0-4 Second divided by 2 |
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403 | // 5-10 Minute (0-59) |
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404 | // 11-15 Hour (0-23 on a 24-hour clock) |
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405 | |
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406 | $UNIXsecond = ($DOStime & 0x001F) * 2; |
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407 | $UNIXminute = (($DOStime & 0x07E0) >> 5); |
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408 | $UNIXhour = (($DOStime & 0xF800) >> 11); |
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409 | |
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410 | return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear); |
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411 | } |
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412 | |
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413 | } |
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414 | |
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415 | |
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416 | ?> |
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