/vtlib/thirdparty/dUnzip2.inc.php
PHP | 517 lines | 403 code | 37 blank | 77 comment | 57 complexity | caf8311e0cc5b0b04cc1de6cf2c9e136 MD5 | raw file
Possible License(s): Apache-2.0, LGPL-3.0, LGPL-2.1, GPL-2.0, GPL-3.0
- <?php
- /**
- * DOWNLOADED FROM: http://www.phpclasses.org/browse/package/2495/
- * License: BSD License
- */
- ?>
- <?php
- // 15/07/2006 (2.6)
- // - Changed the algorithm to parse the ZIP file.. Now, the script will try to mount the compressed
- // list, searching on the 'Central Dir' records. If it fails, the script will try to search by
- // checking every signature. Thanks to Jayson Cruz for pointing it.
- // 25/01/2006 (2.51)
- // - Fixed bug when calling 'unzip' without calling 'getList' first. Thanks to Bala Murthu for pointing it.
- // 01/12/2006 (2.5)
- // - Added optional parameter "applyChmod" for the "unzip()" method. It auto applies the given chmod for
- // extracted files.
- // - Permission 777 (all read-write-exec) is default. If you want to change it, you'll need to make it
- // explicit. (If you want the OS to determine, set "false" as "applyChmod" parameter)
- // 28/11/2005 (2.4)
- // - dUnzip2 is now compliant with old-style "Data Description", made by some compressors,
- // like the classes ZipLib and ZipLib2 by 'Hasin Hayder'. Thanks to Ricardo Parreno for pointing it.
- // 09/11/2005 (2.3)
- // - Added optional parameter '$stopOnFile' on method 'getList()'.
- // If given, file listing will stop when find given filename. (Useful to open and unzip an exact file)
- // 06/11/2005 (2.21)
- // - Added support to PK00 file format (Packed to Removable Disk) (thanks to Lito [PHPfileNavigator])
- // - Method 'getExtraInfo': If requested file doesn't exist, return FALSE instead of Array()
- // 31/10/2005 (2.2)
- // - Removed redundant 'file_name' on centralDirs declaration (thanks to Lito [PHPfileNavigator])
- // - Fixed redeclaration of file_put_contents when in PHP4 (not returning true)
- ##############################################################
- # Class dUnzip2 v2.6
- #
- # Author: Alexandre Tedeschi (d)
- # E-Mail: alexandrebr at gmail dot com
- # Londrina - PR / Brazil
- #
- # Objective:
- # This class allows programmer to easily unzip files on the fly.
- #
- # Requirements:
- # This class requires extension ZLib Enabled. It is default
- # for most site hosts around the world, and for the PHP Win32 dist.
- #
- # To do:
- # * Error handling
- # * Write a PHP-Side gzinflate, to completely avoid any external extensions
- # * Write other decompress algorithms
- #
- # If you modify this class, or have any ideas to improve it, please contact me!
- # You are allowed to redistribute this class, if you keep my name and contact e-mail on it.
- #
- # PLEASE! IF YOU USE THIS CLASS IN ANY OF YOUR PROJECTS, PLEASE LET ME KNOW!
- # If you have problems using it, don't think twice before contacting me!
- #
- ##############################################################
- if(!function_exists('file_put_contents')){
- // If not PHP5, creates a compatible function
- Function file_put_contents($file, $data){
- if($tmp = fopen($file, "w")){
- fwrite($tmp, $data);
- fclose($tmp);
- return true;
- }
- echo "<b>file_put_contents:</b> Cannot create file $file<br>";
- return false;
- }
- }
- class dUnzip2{
- Function getVersion(){
- return "2.6";
- }
- // Public
- var $fileName;
- var $compressedList; // You will problably use only this one!
- var $centralDirList; // Central dir list... It's a kind of 'extra attributes' for a set of files
- var $endOfCentral; // End of central dir, contains ZIP Comments
- var $debug;
-
- // Private
- var $fh;
- var $zipSignature = "\x50\x4b\x03\x04"; // local file header signature
- var $dirSignature = "\x50\x4b\x01\x02"; // central dir header signature
- var $dirSignatureE= "\x50\x4b\x05\x06"; // end of central dir signature
-
- // Public
- Function dUnzip2($fileName){
- $this->fileName = $fileName;
- $this->compressedList =
- $this->centralDirList =
- $this->endOfCentral = Array();
- }
-
- Function getList($stopOnFile=false){
- if(sizeof($this->compressedList)){
- $this->debugMsg(1, "Returning already loaded file list.");
- return $this->compressedList;
- }
-
- // Open file, and set file handler
- $fh = fopen($this->fileName, "r");
- $this->fh = &$fh;
- if(!$fh){
- $this->debugMsg(2, "Failed to load file.");
- return false;
- }
-
- $this->debugMsg(1, "Loading list from 'End of Central Dir' index list...");
- if(!$this->_loadFileListByEOF($fh, $stopOnFile)){
- $this->debugMsg(1, "Failed! Trying to load list looking for signatures...");
- if(!$this->_loadFileListBySignatures($fh, $stopOnFile)){
- $this->debugMsg(1, "Failed! Could not find any valid header.");
- $this->debugMsg(2, "ZIP File is corrupted or empty");
- return false;
- }
- }
-
- if($this->debug){
- #------- Debug compressedList
- $kkk = 0;
- echo "<table border='0' style='font: 11px Verdana; border: 1px solid #000'>";
- foreach($this->compressedList as $fileName=>$item){
- if(!$kkk && $kkk=1){
- echo "<tr style='background: #ADA'>";
- foreach($item as $fieldName=>$value)
- echo "<td>$fieldName</td>";
- echo '</tr>';
- }
- echo "<tr style='background: #CFC'>";
- foreach($item as $fieldName=>$value){
- if($fieldName == 'lastmod_datetime')
- echo "<td title='$fieldName' nowrap='nowrap'>".date("d/m/Y H:i:s", $value)."</td>";
- else
- echo "<td title='$fieldName' nowrap='nowrap'>$value</td>";
- }
- echo "</tr>";
- }
- echo "</table>";
-
- #------- Debug centralDirList
- $kkk = 0;
- if(sizeof($this->centralDirList)){
- echo "<table border='0' style='font: 11px Verdana; border: 1px solid #000'>";
- foreach($this->centralDirList as $fileName=>$item){
- if(!$kkk && $kkk=1){
- echo "<tr style='background: #AAD'>";
- foreach($item as $fieldName=>$value)
- echo "<td>$fieldName</td>";
- echo '</tr>';
- }
- echo "<tr style='background: #CCF'>";
- foreach($item as $fieldName=>$value){
- if($fieldName == 'lastmod_datetime')
- echo "<td title='$fieldName' nowrap='nowrap'>".date("d/m/Y H:i:s", $value)."</td>";
- else
- echo "<td title='$fieldName' nowrap='nowrap'>$value</td>";
- }
- echo "</tr>";
- }
- echo "</table>";
- }
-
- #------- Debug endOfCentral
- $kkk = 0;
- if(sizeof($this->endOfCentral)){
- echo "<table border='0' style='font: 11px Verdana' style='border: 1px solid #000'>";
- echo "<tr style='background: #DAA'><td colspan='2'>dUnzip - End of file</td></tr>";
- foreach($this->endOfCentral as $field=>$value){
- echo "<tr>";
- echo "<td style='background: #FCC'>$field</td>";
- echo "<td style='background: #FDD'>$value</td>";
- echo "</tr>";
- }
- echo "</table>";
- }
- }
-
- return $this->compressedList;
- }
- Function getExtraInfo($compressedFileName){
- return
- isset($this->centralDirList[$compressedFileName])?
- $this->centralDirList[$compressedFileName]:
- false;
- }
- Function getZipInfo($detail=false){
- return $detail?
- $this->endOfCentral[$detail]:
- $this->endOfCentral;
- }
-
- Function unzip($compressedFileName, $targetFileName=false, $applyChmod=0777){
- if(!sizeof($this->compressedList)){
- $this->debugMsg(1, "Trying to unzip before loading file list... Loading it!");
- $this->getList(false, $compressedFileName);
- }
-
- $fdetails = &$this->compressedList[$compressedFileName];
- if(!isset($this->compressedList[$compressedFileName])){
- $this->debugMsg(2, "File '<b>$compressedFileName</b>' is not compressed in the zip.");
- return false;
- }
- if(substr($compressedFileName, -1) == "/"){
- $this->debugMsg(2, "Trying to unzip a folder name '<b>$compressedFileName</b>'.");
- return false;
- }
- if(!$fdetails['uncompressed_size']){
- $this->debugMsg(1, "File '<b>$compressedFileName</b>' is empty.");
- return $targetFileName?
- file_put_contents($targetFileName, ""):
- "";
- }
-
- fseek($this->fh, $fdetails['contents-startOffset']);
- $ret = $this->uncompress(
- fread($this->fh, $fdetails['compressed_size']),
- $fdetails['compression_method'],
- $fdetails['uncompressed_size'],
- $targetFileName
- );
- if($applyChmod && $targetFileName)
- @chmod($targetFileName, 0777);
-
- return $ret;
- }
- Function unzipAll($targetDir=false, $baseDir="", $maintainStructure=true, $applyChmod=0777){
- if($targetDir === false)
- $targetDir = dirname(__FILE__)."/";
-
- $lista = $this->getList();
- if(sizeof($lista)) foreach($lista as $fileName=>$trash){
- $dirname = dirname($fileName);
- $outDN = "$targetDir/$dirname";
-
- if(substr($dirname, 0, strlen($baseDir)) != $baseDir)
- continue;
-
- if(!is_dir($outDN) && $maintainStructure){
- $str = "";
- $folders = explode("/", $dirname);
- foreach($folders as $folder){
- $str = $str?"$str/$folder":$folder;
- if(!is_dir("$targetDir/$str")){
- $this->debugMsg(1, "Creating folder: $targetDir/$str");
- mkdir("$targetDir/$str");
- if($applyChmod)
- chmod("$targetDir/$str", $applyChmod);
- }
- }
- }
- if(substr($fileName, -1, 1) == "/")
- continue;
-
- $maintainStructure?
- $this->unzip($fileName, "$targetDir/$fileName", $applyChmod):
- $this->unzip($fileName, "$targetDir/".basename($fileName), $applyChmod);
- }
- }
-
- Function close(){ // Free the file resource
- if($this->fh)
- fclose($this->fh);
- }
- Function __destroy(){
- $this->close();
- }
-
- // Private (you should NOT call these methods):
- Function uncompress($content, $mode, $uncompressedSize, $targetFileName=false){
- switch($mode){
- case 0:
- // Not compressed
- return $targetFileName?
- file_put_contents($targetFileName, $content):
- $content;
- case 1:
- $this->debugMsg(2, "Shrunk mode is not supported... yet?");
- return false;
- case 2:
- case 3:
- case 4:
- case 5:
- $this->debugMsg(2, "Compression factor ".($mode-1)." is not supported... yet?");
- return false;
- case 6:
- $this->debugMsg(2, "Implode is not supported... yet?");
- return false;
- case 7:
- $this->debugMsg(2, "Tokenizing compression algorithm is not supported... yet?");
- return false;
- case 8:
- // Deflate
- return $targetFileName?
- file_put_contents($targetFileName, gzinflate($content, $uncompressedSize)):
- gzinflate($content, $uncompressedSize);
- case 9:
- $this->debugMsg(2, "Enhanced Deflating is not supported... yet?");
- return false;
- case 10:
- $this->debugMsg(2, "PKWARE Date Compression Library Impoloding is not supported... yet?");
- return false;
- case 12:
- // Bzip2
- return $targetFileName?
- file_put_contents($targetFileName, bzdecompress($content)):
- bzdecompress($content);
- case 18:
- $this->debugMsg(2, "IBM TERSE is not supported... yet?");
- return false;
- default:
- $this->debugMsg(2, "Unknown uncompress method: $mode");
- return false;
- }
- }
- Function debugMsg($level, $string){
- if($this->debug)
- if($level == 1)
- echo "<b style='color: #777'>dUnzip2:</b> $string<br>";
- if($level == 2)
- echo "<b style='color: #F00'>dUnzip2:</b> $string<br>";
- }
- Function _loadFileListByEOF(&$fh, $stopOnFile=false){
- // Check if there's a valid Central Dir signature.
- // Let's consider a file comment smaller than 1024 characters...
- // Actually, it length can be 65536.. But we're not going to support it.
-
- for($x = 0; $x < 1024; $x++){
- fseek($fh, -22-$x, SEEK_END);
-
- $signature = fread($fh, 4);
- if($signature == $this->dirSignatureE){
- // If found EOF Central Dir
- $eodir['disk_number_this'] = unpack("v", fread($fh, 2)); // number of this disk
- $eodir['disk_number'] = unpack("v", fread($fh, 2)); // number of the disk with the start of the central directory
- $eodir['total_entries_this'] = unpack("v", fread($fh, 2)); // total number of entries in the central dir on this disk
- $eodir['total_entries'] = unpack("v", fread($fh, 2)); // total number of entries in
- $eodir['size_of_cd'] = unpack("V", fread($fh, 4)); // size of the central directory
- $eodir['offset_start_cd'] = unpack("V", fread($fh, 4)); // offset of start of central directory with respect to the starting disk number
- $zipFileCommentLenght = unpack("v", fread($fh, 2)); // zipfile comment length
- $eodir['zipfile_comment'] = $zipFileCommentLenght[1]?fread($fh, $zipFileCommentLenght[1]):''; // zipfile comment
- $this->endOfCentral = Array(
- 'disk_number_this'=>$eodir['disk_number_this'][1],
- 'disk_number'=>$eodir['disk_number'][1],
- 'total_entries_this'=>$eodir['total_entries_this'][1],
- 'total_entries'=>$eodir['total_entries'][1],
- 'size_of_cd'=>$eodir['size_of_cd'][1],
- 'offset_start_cd'=>$eodir['offset_start_cd'][1],
- 'zipfile_comment'=>$eodir['zipfile_comment'],
- );
-
- // Then, load file list
- fseek($fh, $this->endOfCentral['offset_start_cd']);
- $signature = fread($fh, 4);
-
- while($signature == $this->dirSignature){
- $dir['version_madeby'] = unpack("v", fread($fh, 2)); // version made by
- $dir['version_needed'] = unpack("v", fread($fh, 2)); // version needed to extract
- $dir['general_bit_flag'] = unpack("v", fread($fh, 2)); // general purpose bit flag
- $dir['compression_method'] = unpack("v", fread($fh, 2)); // compression method
- $dir['lastmod_time'] = unpack("v", fread($fh, 2)); // last mod file time
- $dir['lastmod_date'] = unpack("v", fread($fh, 2)); // last mod file date
- $dir['crc-32'] = fread($fh, 4); // crc-32
- $dir['compressed_size'] = unpack("V", fread($fh, 4)); // compressed size
- $dir['uncompressed_size'] = unpack("V", fread($fh, 4)); // uncompressed size
- $fileNameLength = unpack("v", fread($fh, 2)); // filename length
- $extraFieldLength = unpack("v", fread($fh, 2)); // extra field length
- $fileCommentLength = unpack("v", fread($fh, 2)); // file comment length
- $dir['disk_number_start'] = unpack("v", fread($fh, 2)); // disk number start
- $dir['internal_attributes'] = unpack("v", fread($fh, 2)); // internal file attributes-byte1
- $dir['external_attributes1']= unpack("v", fread($fh, 2)); // external file attributes-byte2
- $dir['external_attributes2']= unpack("v", fread($fh, 2)); // external file attributes
- $dir['relative_offset'] = unpack("V", fread($fh, 4)); // relative offset of local header
- $dir['file_name'] = fread($fh, $fileNameLength[1]); // filename
- $dir['extra_field'] = $extraFieldLength[1] ?fread($fh, $extraFieldLength[1]) :''; // extra field
- $dir['file_comment'] = $fileCommentLength[1]?fread($fh, $fileCommentLength[1]):''; // file comment
-
- // Convert the date and time, from MS-DOS format to UNIX Timestamp
- $BINlastmod_date = str_pad(decbin($dir['lastmod_date'][1]), 16, '0', STR_PAD_LEFT);
- $BINlastmod_time = str_pad(decbin($dir['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));
-
- $this->centralDirList[$dir['file_name']] = Array(
- 'version_madeby'=>$dir['version_madeby'][1],
- 'version_needed'=>$dir['version_needed'][1],
- 'general_bit_flag'=>str_pad(decbin($dir['general_bit_flag'][1]), 8, '0', STR_PAD_LEFT),
- 'compression_method'=>$dir['compression_method'][1],
- 'lastmod_datetime' =>mktime($lastmod_timeH, $lastmod_timeM, $lastmod_timeS, $lastmod_dateM, $lastmod_dateD, $lastmod_dateY),
- 'crc-32' =>str_pad(dechex(ord($dir['crc-32'][3])), 2, '0', STR_PAD_LEFT).
- str_pad(dechex(ord($dir['crc-32'][2])), 2, '0', STR_PAD_LEFT).
- str_pad(dechex(ord($dir['crc-32'][1])), 2, '0', STR_PAD_LEFT).
- str_pad(dechex(ord($dir['crc-32'][0])), 2, '0', STR_PAD_LEFT),
- 'compressed_size'=>$dir['compressed_size'][1],
- 'uncompressed_size'=>$dir['uncompressed_size'][1],
- 'disk_number_start'=>$dir['disk_number_start'][1],
- 'internal_attributes'=>$dir['internal_attributes'][1],
- 'external_attributes1'=>$dir['external_attributes1'][1],
- 'external_attributes2'=>$dir['external_attributes2'][1],
- 'relative_offset'=>$dir['relative_offset'][1],
- 'file_name'=>$dir['file_name'],
- 'extra_field'=>$dir['extra_field'],
- 'file_comment'=>$dir['file_comment'],
- );
- $signature = fread($fh, 4);
- }
-
- // If loaded centralDirs, then try to identify the offsetPosition of the compressed data.
- if($this->centralDirList) foreach($this->centralDirList as $filename=>$details){
- $i = $this->_getFileHeaderInformation($fh, $details['relative_offset']);
- $this->compressedList[$filename]['file_name'] = $filename;
- $this->compressedList[$filename]['compression_method'] = $details['compression_method'];
- $this->compressedList[$filename]['version_needed'] = $details['version_needed'];
- $this->compressedList[$filename]['lastmod_datetime'] = $details['lastmod_datetime'];
- $this->compressedList[$filename]['crc-32'] = $details['crc-32'];
- $this->compressedList[$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;
- }
- }
- ?>