518 lines
21 KiB
PHP
518 lines
21 KiB
PHP
<?php
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/**
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* DOWNLOADED FROM: http://www.phpclasses.org/browse/package/2495/
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* License: BSD License
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*/
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?>
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<?php
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// 15/07/2006 (2.6)
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// - Changed the algorithm to parse the ZIP file.. Now, the script will try to mount the compressed
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// list, searching on the 'Central Dir' records. If it fails, the script will try to search by
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// checking every signature. Thanks to Jayson Cruz for pointing it.
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// 25/01/2006 (2.51)
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// - Fixed bug when calling 'unzip' without calling 'getList' first. Thanks to Bala Murthu for pointing it.
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// 01/12/2006 (2.5)
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// - Added optional parameter "applyChmod" for the "unzip()" method. It auto applies the given chmod for
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// extracted files.
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// - Permission 777 (all read-write-exec) is default. If you want to change it, you'll need to make it
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// explicit. (If you want the OS to determine, set "false" as "applyChmod" parameter)
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// 28/11/2005 (2.4)
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// - dUnzip2 is now compliant with old-style "Data Description", made by some compressors,
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// like the classes ZipLib and ZipLib2 by 'Hasin Hayder'. Thanks to Ricardo Parreno for pointing it.
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// 09/11/2005 (2.3)
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// - Added optional parameter '$stopOnFile' on method 'getList()'.
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// If given, file listing will stop when find given filename. (Useful to open and unzip an exact file)
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// 06/11/2005 (2.21)
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// - Added support to PK00 file format (Packed to Removable Disk) (thanks to Lito [PHPfileNavigator])
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// - Method 'getExtraInfo': If requested file doesn't exist, return FALSE instead of Array()
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// 31/10/2005 (2.2)
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// - Removed redundant 'file_name' on centralDirs declaration (thanks to Lito [PHPfileNavigator])
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// - Fixed redeclaration of file_put_contents when in PHP4 (not returning true)
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##############################################################
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# Class dUnzip2 v2.6
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#
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# Author: Alexandre Tedeschi (d)
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# E-Mail: alexandrebr at gmail dot com
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# Londrina - PR / Brazil
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#
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# Objective:
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# This class allows programmer to easily unzip files on the fly.
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#
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# Requirements:
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# This class requires extension ZLib Enabled. It is default
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# for most site hosts around the world, and for the PHP Win32 dist.
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#
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# To do:
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# * Error handling
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# * Write a PHP-Side gzinflate, to completely avoid any external extensions
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# * Write other decompress algorithms
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#
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# If you modify this class, or have any ideas to improve it, please contact me!
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# You are allowed to redistribute this class, if you keep my name and contact e-mail on it.
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#
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# PLEASE! IF YOU USE THIS CLASS IN ANY OF YOUR PROJECTS, PLEASE LET ME KNOW!
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# If you have problems using it, don't think twice before contacting me!
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#
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##############################################################
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if(!function_exists('file_put_contents')){
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// If not PHP5, creates a compatible function
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Function file_put_contents($file, $data){
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if($tmp = fopen($file, "w")){
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fwrite($tmp, $data);
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fclose($tmp);
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return true;
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}
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echo "<b>file_put_contents:</b> Cannot create file $file<br>";
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return false;
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}
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}
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class dUnzip2{
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Function getVersion(){
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return "2.6";
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}
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// Public
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var $fileName;
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var $compressedList; // You will problably use only this one!
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var $centralDirList; // Central dir list... It's a kind of 'extra attributes' for a set of files
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var $endOfCentral; // End of central dir, contains ZIP Comments
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var $debug;
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// Private
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var $fh;
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var $zipSignature = "\x50\x4b\x03\x04"; // local file header signature
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var $dirSignature = "\x50\x4b\x01\x02"; // central dir header signature
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var $dirSignatureE= "\x50\x4b\x05\x06"; // end of central dir signature
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// Public
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Function dUnzip2($fileName){
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$this->fileName = $fileName;
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$this->compressedList =
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$this->centralDirList =
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$this->endOfCentral = Array();
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}
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Function getList($stopOnFile=false){
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if(sizeof($this->compressedList)){
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$this->debugMsg(1, "Returning already loaded file list.");
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return $this->compressedList;
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}
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// Open file, and set file handler
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$fh = fopen($this->fileName, "r");
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$this->fh = &$fh;
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if(!$fh){
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$this->debugMsg(2, "Failed to load file.");
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return false;
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}
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$this->debugMsg(1, "Loading list from 'End of Central Dir' index list...");
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if(!$this->_loadFileListByEOF($fh, $stopOnFile)){
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$this->debugMsg(1, "Failed! Trying to load list looking for signatures...");
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if(!$this->_loadFileListBySignatures($fh, $stopOnFile)){
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$this->debugMsg(1, "Failed! Could not find any valid header.");
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$this->debugMsg(2, "ZIP File is corrupted or empty");
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return false;
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}
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}
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if($this->debug){
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#------- Debug compressedList
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$kkk = 0;
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echo "<table border='0' style='font: 11px Verdana; border: 1px solid #000'>";
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foreach($this->compressedList as $fileName=>$item){
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if(!$kkk && $kkk=1){
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echo "<tr style='background: #ADA'>";
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foreach($item as $fieldName=>$value)
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echo "<td>$fieldName</td>";
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echo '</tr>';
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}
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echo "<tr style='background: #CFC'>";
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foreach($item as $fieldName=>$value){
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if($fieldName == 'lastmod_datetime')
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echo "<td title='$fieldName' nowrap='nowrap'>".date("d/m/Y H:i:s", $value)."</td>";
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else
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echo "<td title='$fieldName' nowrap='nowrap'>$value</td>";
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}
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echo "</tr>";
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}
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echo "</table>";
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#------- Debug centralDirList
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$kkk = 0;
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if(sizeof($this->centralDirList)){
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echo "<table border='0' style='font: 11px Verdana; border: 1px solid #000'>";
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foreach($this->centralDirList as $fileName=>$item){
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if(!$kkk && $kkk=1){
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echo "<tr style='background: #AAD'>";
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foreach($item as $fieldName=>$value)
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echo "<td>$fieldName</td>";
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echo '</tr>';
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}
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echo "<tr style='background: #CCF'>";
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foreach($item as $fieldName=>$value){
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if($fieldName == 'lastmod_datetime')
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echo "<td title='$fieldName' nowrap='nowrap'>".date("d/m/Y H:i:s", $value)."</td>";
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else
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echo "<td title='$fieldName' nowrap='nowrap'>$value</td>";
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}
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echo "</tr>";
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}
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echo "</table>";
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}
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#------- Debug endOfCentral
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$kkk = 0;
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if(sizeof($this->endOfCentral)){
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echo "<table border='0' style='font: 11px Verdana' style='border: 1px solid #000'>";
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echo "<tr style='background: #DAA'><td colspan='2'>dUnzip - End of file</td></tr>";
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foreach($this->endOfCentral as $field=>$value){
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echo "<tr>";
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echo "<td style='background: #FCC'>$field</td>";
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echo "<td style='background: #FDD'>$value</td>";
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echo "</tr>";
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}
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echo "</table>";
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}
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}
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return $this->compressedList;
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}
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Function getExtraInfo($compressedFileName){
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return
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isset($this->centralDirList[$compressedFileName])?
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$this->centralDirList[$compressedFileName]:
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false;
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}
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Function getZipInfo($detail=false){
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return $detail?
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$this->endOfCentral[$detail]:
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$this->endOfCentral;
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}
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Function unzip($compressedFileName, $targetFileName=false, $applyChmod=0777){
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if(!sizeof($this->compressedList)){
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$this->debugMsg(1, "Trying to unzip before loading file list... Loading it!");
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$this->getList(false, $compressedFileName);
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}
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$fdetails = &$this->compressedList[$compressedFileName];
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if(!isset($this->compressedList[$compressedFileName])){
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$this->debugMsg(2, "File '<b>$compressedFileName</b>' is not compressed in the zip.");
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return false;
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}
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if(substr($compressedFileName, -1) == "/"){
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$this->debugMsg(2, "Trying to unzip a folder name '<b>$compressedFileName</b>'.");
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return false;
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}
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if(!$fdetails['uncompressed_size']){
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$this->debugMsg(1, "File '<b>$compressedFileName</b>' is empty.");
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return $targetFileName?
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file_put_contents($targetFileName, ""):
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"";
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}
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fseek($this->fh, $fdetails['contents-startOffset']);
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$ret = $this->uncompress(
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fread($this->fh, $fdetails['compressed_size']),
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$fdetails['compression_method'],
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$fdetails['uncompressed_size'],
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$targetFileName
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);
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if($applyChmod && $targetFileName)
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@chmod($targetFileName, 0777);
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return $ret;
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}
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Function unzipAll($targetDir=false, $baseDir="", $maintainStructure=true, $applyChmod=0777){
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if($targetDir === false)
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$targetDir = dirname(__FILE__)."/";
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$lista = $this->getList();
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if(sizeof($lista)) foreach($lista as $fileName=>$trash){
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$dirname = dirname($fileName);
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$outDN = "$targetDir/$dirname";
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if(substr($dirname, 0, strlen($baseDir)) != $baseDir)
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continue;
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if(!is_dir($outDN) && $maintainStructure){
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$str = "";
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$folders = explode("/", $dirname);
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foreach($folders as $folder){
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$str = $str?"$str/$folder":$folder;
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if(!is_dir("$targetDir/$str")){
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$this->debugMsg(1, "Creating folder: $targetDir/$str");
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mkdir("$targetDir/$str");
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if($applyChmod)
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chmod("$targetDir/$str", $applyChmod);
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}
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}
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}
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if(substr($fileName, -1, 1) == "/")
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continue;
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$maintainStructure?
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$this->unzip($fileName, "$targetDir/$fileName", $applyChmod):
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$this->unzip($fileName, "$targetDir/".basename($fileName), $applyChmod);
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}
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}
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Function close(){ // Free the file resource
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if($this->fh)
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fclose($this->fh);
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}
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Function __destroy(){
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$this->close();
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}
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// Private (you should NOT call these methods):
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Function uncompress($content, $mode, $uncompressedSize, $targetFileName=false){
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switch($mode){
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case 0:
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// Not compressed
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return $targetFileName?
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file_put_contents($targetFileName, $content):
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$content;
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case 1:
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$this->debugMsg(2, "Shrunk mode is not supported... yet?");
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return false;
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case 2:
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case 3:
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case 4:
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case 5:
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$this->debugMsg(2, "Compression factor ".($mode-1)." is not supported... yet?");
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return false;
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case 6:
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$this->debugMsg(2, "Implode is not supported... yet?");
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return false;
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case 7:
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$this->debugMsg(2, "Tokenizing compression algorithm is not supported... yet?");
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return false;
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case 8:
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// Deflate
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return $targetFileName?
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file_put_contents($targetFileName, gzinflate($content, $uncompressedSize)):
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gzinflate($content, $uncompressedSize);
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case 9:
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$this->debugMsg(2, "Enhanced Deflating is not supported... yet?");
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return false;
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case 10:
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$this->debugMsg(2, "PKWARE Date Compression Library Impoloding is not supported... yet?");
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return false;
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case 12:
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// Bzip2
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return $targetFileName?
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file_put_contents($targetFileName, bzdecompress($content)):
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bzdecompress($content);
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case 18:
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$this->debugMsg(2, "IBM TERSE is not supported... yet?");
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return false;
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default:
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$this->debugMsg(2, "Unknown uncompress method: $mode");
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return false;
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}
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}
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Function debugMsg($level, $string){
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if($this->debug)
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if($level == 1)
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echo "<b style='color: #777'>dUnzip2:</b> $string<br>";
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if($level == 2)
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echo "<b style='color: #F00'>dUnzip2:</b> $string<br>";
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}
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Function _loadFileListByEOF(&$fh, $stopOnFile=false){
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// Check if there's a valid Central Dir signature.
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// Let's consider a file comment smaller than 1024 characters...
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// Actually, it length can be 65536.. But we're not going to support it.
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for($x = 0; $x < 1024; $x++){
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fseek($fh, -22-$x, SEEK_END);
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$signature = fread($fh, 4);
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if($signature == $this->dirSignatureE){
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// If found EOF Central Dir
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$eodir['disk_number_this'] = unpack("v", fread($fh, 2)); // number of this disk
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$eodir['disk_number'] = unpack("v", fread($fh, 2)); // number of the disk with the start of the central directory
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$eodir['total_entries_this'] = unpack("v", fread($fh, 2)); // total number of entries in the central dir on this disk
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$eodir['total_entries'] = unpack("v", fread($fh, 2)); // total number of entries in
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$eodir['size_of_cd'] = unpack("V", fread($fh, 4)); // size of the central directory
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$eodir['offset_start_cd'] = unpack("V", fread($fh, 4)); // offset of start of central directory with respect to the starting disk number
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$zipFileCommentLenght = unpack("v", fread($fh, 2)); // zipfile comment length
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$eodir['zipfile_comment'] = $zipFileCommentLenght[1]?fread($fh, $zipFileCommentLenght[1]):''; // zipfile comment
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$this->endOfCentral = Array(
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'disk_number_this'=>$eodir['disk_number_this'][1],
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'disk_number'=>$eodir['disk_number'][1],
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'total_entries_this'=>$eodir['total_entries_this'][1],
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'total_entries'=>$eodir['total_entries'][1],
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'size_of_cd'=>$eodir['size_of_cd'][1],
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'offset_start_cd'=>$eodir['offset_start_cd'][1],
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'zipfile_comment'=>$eodir['zipfile_comment'],
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);
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// Then, load file list
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fseek($fh, $this->endOfCentral['offset_start_cd']);
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$signature = fread($fh, 4);
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while($signature == $this->dirSignature){
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$dir['version_madeby'] = unpack("v", fread($fh, 2)); // version made by
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$dir['version_needed'] = unpack("v", fread($fh, 2)); // version needed to extract
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$dir['general_bit_flag'] = unpack("v", fread($fh, 2)); // general purpose bit flag
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$dir['compression_method'] = unpack("v", fread($fh, 2)); // compression method
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$dir['lastmod_time'] = unpack("v", fread($fh, 2)); // last mod file time
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$dir['lastmod_date'] = unpack("v", fread($fh, 2)); // last mod file date
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$dir['crc-32'] = fread($fh, 4); // crc-32
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$dir['compressed_size'] = unpack("V", fread($fh, 4)); // compressed size
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$dir['uncompressed_size'] = unpack("V", fread($fh, 4)); // uncompressed size
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$fileNameLength = unpack("v", fread($fh, 2)); // filename length
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$extraFieldLength = unpack("v", fread($fh, 2)); // extra field length
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$fileCommentLength = unpack("v", fread($fh, 2)); // file comment length
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$dir['disk_number_start'] = unpack("v", fread($fh, 2)); // disk number start
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$dir['internal_attributes'] = unpack("v", fread($fh, 2)); // internal file attributes-byte1
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$dir['external_attributes1']= unpack("v", fread($fh, 2)); // external file attributes-byte2
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$dir['external_attributes2']= unpack("v", fread($fh, 2)); // external file attributes
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$dir['relative_offset'] = unpack("V", fread($fh, 4)); // relative offset of local header
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$dir['file_name'] = fread($fh, $fileNameLength[1]); // filename
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$dir['extra_field'] = $extraFieldLength[1] ?fread($fh, $extraFieldLength[1]) :''; // extra field
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$dir['file_comment'] = $fileCommentLength[1]?fread($fh, $fileCommentLength[1]):''; // file comment
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// Convert the date and time, from MS-DOS format to UNIX Timestamp
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$BINlastmod_date = str_pad(decbin($dir['lastmod_date'][1]), 16, '0', STR_PAD_LEFT);
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$BINlastmod_time = str_pad(decbin($dir['lastmod_time'][1]), 16, '0', STR_PAD_LEFT);
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$lastmod_dateY = bindec(substr($BINlastmod_date, 0, 7))+1980;
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$lastmod_dateM = bindec(substr($BINlastmod_date, 7, 4));
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$lastmod_dateD = bindec(substr($BINlastmod_date, 11, 5));
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$lastmod_timeH = bindec(substr($BINlastmod_time, 0, 5));
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$lastmod_timeM = bindec(substr($BINlastmod_time, 5, 6));
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$lastmod_timeS = bindec(substr($BINlastmod_time, 11, 5));
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$this->centralDirList[$dir['file_name']] = Array(
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'version_madeby'=>$dir['version_madeby'][1],
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'version_needed'=>$dir['version_needed'][1],
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'general_bit_flag'=>str_pad(decbin($dir['general_bit_flag'][1]), 8, '0', STR_PAD_LEFT),
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'compression_method'=>$dir['compression_method'][1],
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'lastmod_datetime' =>mktime($lastmod_timeH, $lastmod_timeM, $lastmod_timeS, $lastmod_dateM, $lastmod_dateD, $lastmod_dateY),
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'crc-32' =>str_pad(dechex(ord($dir['crc-32'][3])), 2, '0', STR_PAD_LEFT).
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str_pad(dechex(ord($dir['crc-32'][2])), 2, '0', STR_PAD_LEFT).
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str_pad(dechex(ord($dir['crc-32'][1])), 2, '0', STR_PAD_LEFT).
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str_pad(dechex(ord($dir['crc-32'][0])), 2, '0', STR_PAD_LEFT),
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'compressed_size'=>$dir['compressed_size'][1],
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'uncompressed_size'=>$dir['uncompressed_size'][1],
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'disk_number_start'=>$dir['disk_number_start'][1],
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'internal_attributes'=>$dir['internal_attributes'][1],
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'external_attributes1'=>$dir['external_attributes1'][1],
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'external_attributes2'=>$dir['external_attributes2'][1],
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'relative_offset'=>$dir['relative_offset'][1],
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'file_name'=>$dir['file_name'],
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'extra_field'=>$dir['extra_field'],
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'file_comment'=>$dir['file_comment'],
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);
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$signature = fread($fh, 4);
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}
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// If loaded centralDirs, then try to identify the offsetPosition of the compressed data.
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if($this->centralDirList) foreach($this->centralDirList as $filename=>$details){
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$i = $this->_getFileHeaderInformation($fh, $details['relative_offset']);
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$this->compressedList[$filename]['file_name'] = $filename;
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$this->compressedList[$filename]['compression_method'] = $details['compression_method'];
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$this->compressedList[$filename]['version_needed'] = $details['version_needed'];
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$this->compressedList[$filename]['lastmod_datetime'] = $details['lastmod_datetime'];
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$this->compressedList[$filename]['crc-32'] = $details['crc-32'];
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$this->compressedList[$filename]['compressed_size'] = $details['compressed_size'];
|
|
$this->compressedList[$filename]['uncompressed_size'] = $details['uncompressed_size'];
|
|
$this->compressedList[$filename]['lastmod_datetime'] = $details['lastmod_datetime'];
|
|
$this->compressedList[$filename]['extra_field'] = $i['extra_field'];
|
|
$this->compressedList[$filename]['contents-startOffset']=$i['contents-startOffset'];
|
|
if(strtolower($stopOnFile) == strtolower($filename))
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
Function _loadFileListBySignatures(&$fh, $stopOnFile=false){
|
|
fseek($fh, 0);
|
|
|
|
$return = false;
|
|
for(;;){
|
|
$details = $this->_getFileHeaderInformation($fh);
|
|
if(!$details){
|
|
$this->debugMsg(1, "Invalid signature. Trying to verify if is old style Data Descriptor...");
|
|
fseek($fh, 12 - 4, SEEK_CUR); // 12: Data descriptor - 4: Signature (that will be read again)
|
|
$details = $this->_getFileHeaderInformation($fh);
|
|
}
|
|
if(!$details){
|
|
$this->debugMsg(1, "Still invalid signature. Probably reached the end of the file.");
|
|
break;
|
|
}
|
|
$filename = $details['file_name'];
|
|
$this->compressedList[$filename] = $details;
|
|
$return = true;
|
|
if(strtolower($stopOnFile) == strtolower($filename))
|
|
break;
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
Function _getFileHeaderInformation(&$fh, $startOffset=false){
|
|
if($startOffset !== false)
|
|
fseek($fh, $startOffset);
|
|
|
|
$signature = fread($fh, 4);
|
|
if($signature == $this->zipSignature){
|
|
# $this->debugMsg(1, "Zip Signature!");
|
|
|
|
// Get information about the zipped file
|
|
$file['version_needed'] = unpack("v", fread($fh, 2)); // version needed to extract
|
|
$file['general_bit_flag'] = unpack("v", fread($fh, 2)); // general purpose bit flag
|
|
$file['compression_method'] = unpack("v", fread($fh, 2)); // compression method
|
|
$file['lastmod_time'] = unpack("v", fread($fh, 2)); // last mod file time
|
|
$file['lastmod_date'] = unpack("v", fread($fh, 2)); // last mod file date
|
|
$file['crc-32'] = fread($fh, 4); // crc-32
|
|
$file['compressed_size'] = unpack("V", fread($fh, 4)); // compressed size
|
|
$file['uncompressed_size'] = unpack("V", fread($fh, 4)); // uncompressed size
|
|
$fileNameLength = unpack("v", fread($fh, 2)); // filename length
|
|
$extraFieldLength = unpack("v", fread($fh, 2)); // extra field length
|
|
$file['file_name'] = fread($fh, $fileNameLength[1]); // filename
|
|
$file['extra_field'] = $extraFieldLength[1]?fread($fh, $extraFieldLength[1]):''; // extra field
|
|
$file['contents-startOffset']= ftell($fh);
|
|
|
|
// Bypass the whole compressed contents, and look for the next file
|
|
fseek($fh, $file['compressed_size'][1], SEEK_CUR);
|
|
|
|
// Convert the date and time, from MS-DOS format to UNIX Timestamp
|
|
$BINlastmod_date = str_pad(decbin($file['lastmod_date'][1]), 16, '0', STR_PAD_LEFT);
|
|
$BINlastmod_time = str_pad(decbin($file['lastmod_time'][1]), 16, '0', STR_PAD_LEFT);
|
|
$lastmod_dateY = bindec(substr($BINlastmod_date, 0, 7))+1980;
|
|
$lastmod_dateM = bindec(substr($BINlastmod_date, 7, 4));
|
|
$lastmod_dateD = bindec(substr($BINlastmod_date, 11, 5));
|
|
$lastmod_timeH = bindec(substr($BINlastmod_time, 0, 5));
|
|
$lastmod_timeM = bindec(substr($BINlastmod_time, 5, 6));
|
|
$lastmod_timeS = bindec(substr($BINlastmod_time, 11, 5));
|
|
|
|
// Mount file table
|
|
$i = Array(
|
|
'file_name' =>$file['file_name'],
|
|
'compression_method'=>$file['compression_method'][1],
|
|
'version_needed' =>$file['version_needed'][1],
|
|
'lastmod_datetime' =>mktime($lastmod_timeH, $lastmod_timeM, $lastmod_timeS, $lastmod_dateM, $lastmod_dateD, $lastmod_dateY),
|
|
'crc-32' =>str_pad(dechex(ord($file['crc-32'][3])), 2, '0', STR_PAD_LEFT).
|
|
str_pad(dechex(ord($file['crc-32'][2])), 2, '0', STR_PAD_LEFT).
|
|
str_pad(dechex(ord($file['crc-32'][1])), 2, '0', STR_PAD_LEFT).
|
|
str_pad(dechex(ord($file['crc-32'][0])), 2, '0', STR_PAD_LEFT),
|
|
'compressed_size' =>$file['compressed_size'][1],
|
|
'uncompressed_size' =>$file['uncompressed_size'][1],
|
|
'extra_field' =>$file['extra_field'],
|
|
'general_bit_flag' =>str_pad(decbin($file['general_bit_flag'][1]), 8, '0', STR_PAD_LEFT),
|
|
'contents-startOffset'=>$file['contents-startOffset']
|
|
);
|
|
return $i;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
?>
|