mirror of
https://github.com/YunoHost-Apps/dokuwiki_ynh.git
synced 2024-09-03 18:26:20 +02:00
576 lines
19 KiB
PHP
576 lines
19 KiB
PHP
<?php
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/**
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* @author bouchon
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* @link http://dev.maxg.info
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* @link http://forum.maxg.info
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*
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* Modified for Dokuwiki
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* @deprecated 2015-05-15 - use splitbrain\PHPArchive\Zip instead
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* @author Christopher Smith <chris@jalakai.co.uk>
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*/
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class ZipLib {
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var $datasec;
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var $ctrl_dir = array();
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var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
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var $old_offset = 0;
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var $dirs = Array(".");
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/**
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* @param string $zip_name filename path to file
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* @return array|int
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*/
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function get_List($zip_name) {
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$zip = @fopen($zip_name, 'rb');
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if(!$zip) return(0);
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$centd = $this->ReadCentralDir($zip,$zip_name);
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@rewind($zip);
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@fseek($zip, $centd['offset']);
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$ret = array();
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for ($i=0; $i<$centd['entries']; $i++) {
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$header = $this->ReadCentralFileHeaders($zip);
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$header['index'] = $i;
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$info = array();
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$info['filename'] = $header['filename'];
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$info['stored_filename'] = $header['stored_filename'];
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$info['size'] = $header['size'];
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$info['compressed_size'] = $header['compressed_size'];
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$info['crc'] = strtoupper(dechex( $header['crc'] ));
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$info['mtime'] = $header['mtime'];
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$info['comment'] = $header['comment'];
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$info['folder'] = ($header['external']==0x41FF0010||$header['external']==16)?1:0;
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$info['index'] = $header['index'];
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$info['status'] = $header['status'];
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$ret[]=$info;
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unset($header);
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}
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return $ret;
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}
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/**
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* @param array $files array filled with array(string filename, string data)
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* @param bool $compact
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* @return array
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*/
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function Add($files,$compact) {
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if(!is_array($files[0])) $files=Array($files);
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$ret = array();
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for($i=0;$files[$i];$i++){
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$fn = $files[$i];
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if(!in_Array(dirname($fn[0]),$this->dirs))
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$this->add_Dir(dirname($fn[0]));
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if(utf8_basename($fn[0]))
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$ret[utf8_basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact);
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}
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return $ret;
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}
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/**
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* Zips recursively the $folder directory, from the $basedir directory
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*
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* @param string $folder filename path to file
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* @param string|null $basedir
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* @param string|null $parent
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*/
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function Compress($folder, $basedir=null, $parent=null) {
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$full_path = $basedir."/".$parent.$folder;
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$zip_path = $parent.$folder;
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if ($zip_path) {
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$zip_path .= "/";
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$this->add_dir($zip_path);
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}
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$dir = new DirectoryIterator($full_path);
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foreach($dir as $file) {
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/** @var DirectoryIterator $file */
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if(!$file->isDot()) {
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$filename = $file->getFilename();
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if($file->isDir()) {
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$this->Compress($filename, $basedir, $zip_path);
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} else {
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$content = join('', file($full_path.'/'.$filename));
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$this->add_File($content, $zip_path.$filename);
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}
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}
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}
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}
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/**
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* Returns the Zip file
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*
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* @return string
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*/
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function get_file() {
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$data = implode('', $this -> datasec);
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$ctrldir = implode('', $this -> ctrl_dir);
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return $data . $ctrldir . $this -> eof_ctrl_dir .
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pack('v', count($this->ctrl_dir)).pack('v', count($this->ctrl_dir)).
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pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
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}
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/**
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* @param string $name the name of the directory
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*/
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function add_dir($name) {
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$name = str_replace("\\", "/", $name);
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$fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
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$fr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
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$fr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
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$this -> datasec[] = $fr;
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$new_offset = strlen(implode("", $this->datasec));
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$cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
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$cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
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$cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
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$ext = "\xff\xff\xff\xff";
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$cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name;
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$this -> ctrl_dir[] = $cdrec;
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$this -> old_offset = $new_offset;
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$this -> dirs[] = $name;
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}
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/**
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* Add a file named $name from a string $data
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*
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* @param string $data
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* @param string $name filename
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* @param bool $compact
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* @return bool
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*/
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function add_File($data, $name, $compact = true) {
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$name = str_replace('\\', '/', $name);
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$dtime = dechex($this->DosTime());
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$hexdtime = pack('H*',$dtime[6].$dtime[7].
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$dtime[4].$dtime[5].
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$dtime[2].$dtime[3].
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$dtime[0].$dtime[1]);
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if($compact){
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$fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime;
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}else{
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$fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime;
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}
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$unc_len = strlen($data);
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$crc = crc32($data);
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if($compact){
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$zdata = gzcompress($data);
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$c_len = strlen($zdata);
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$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
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}else{
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$zdata = $data;
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}
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$c_len=strlen($zdata);
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$fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
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$fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;
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$fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
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$this -> datasec[] = $fr;
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$new_offset = strlen(implode('', $this->datasec));
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if($compact) {
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$cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
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} else {
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$cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";
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}
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$cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
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$cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );
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$cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );
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$cdrec .= pack('V', $this -> old_offset );
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$this -> old_offset = $new_offset;
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$cdrec .= $name;
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$this -> ctrl_dir[] = $cdrec;
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return true;
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}
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/**
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* @return int
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*/
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function DosTime() {
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$timearray = getdate();
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if ($timearray['year'] < 1980) {
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$timearray['year'] = 1980;
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$timearray['mon'] = 1;
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$timearray['mday'] = 1;
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$timearray['hours'] = 0;
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$timearray['minutes'] = 0;
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$timearray['seconds'] = 0;
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}
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return (($timearray['year'] - 1980) << 25) |
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($timearray['mon'] << 21) |
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($timearray['mday'] << 16) |
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($timearray['hours'] << 11) |
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($timearray['minutes'] << 5) |
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($timearray['seconds'] >> 1);
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}
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/**
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* Extract a zip file $zn to the $to directory
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*
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* @param string $zn filename
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* @param string $to filename path to file
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* @param array $index
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* @return array|int
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*/
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function Extract ( $zn, $to, $index = Array(-1) ) {
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if(!@is_dir($to)) $this->_mkdir($to);
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$zip = @fopen($zn,'rb');
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if(!$zip) return(-1);
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$cdir = $this->ReadCentralDir($zip,$zn);
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$pos_entry = $cdir['offset'];
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if(!is_array($index)){
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$index = array($index);
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}
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for($i=0; isset($index[$i]);$i++){
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if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries'])
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return(-1);
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}
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$stat = array();
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for ($i=0; $i<$cdir['entries']; $i++) {
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@fseek($zip, $pos_entry);
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$header = $this->ReadCentralFileHeaders($zip);
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$header['index'] = $i;
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$pos_entry = ftell($zip);
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@rewind($zip);
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fseek($zip, $header['offset']);
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if(in_array("-1",$index)||in_array($i,$index)){
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$stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);
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}
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}
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fclose($zip);
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return $stat;
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}
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/**
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* @param resource $zip
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* @param array $header
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* @return array
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*/
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function ReadFileHeader($zip, $header) {
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$binary_data = fread($zip, 30);
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$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
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$header['filename'] = fread($zip, $data['filename_len']);
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if ($data['extra_len'] != 0) {
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$header['extra'] = fread($zip, $data['extra_len']);
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} else {
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$header['extra'] = '';
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}
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$header['compression'] = $data['compression'];
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foreach (array('size','compressed_size','crc') as $hd) { // On ODT files, these headers are 0. Keep the previous value.
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if ($data[$hd] != 0) $header[$hd] = $data[$hd];
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}
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$header['flag'] = $data['flag'];
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$header['mdate'] = $data['mdate'];
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$header['mtime'] = $data['mtime'];
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if ($header['mdate'] && $header['mtime']){
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$hour = ($header['mtime']&0xF800)>>11;
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$minute = ($header['mtime']&0x07E0)>>5;
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$seconde = ($header['mtime']&0x001F)*2;
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$year = (($header['mdate']&0xFE00)>>9)+1980;
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$month = ($header['mdate']&0x01E0)>>5;
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$day = $header['mdate']&0x001F;
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$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
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} else {
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$header['mtime'] = time();
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}
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$header['stored_filename'] = $header['filename'];
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$header['status'] = "ok";
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return $header;
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}
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/**
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* @param resource $zip
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* @return array
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*/
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function ReadCentralFileHeaders($zip){
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$binary_data = fread($zip, 46);
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$header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
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if ($header['filename_len'] != 0){
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$header['filename'] = fread($zip,$header['filename_len']);
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}else{
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$header['filename'] = '';
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}
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if ($header['extra_len'] != 0){
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$header['extra'] = fread($zip, $header['extra_len']);
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}else{
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$header['extra'] = '';
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}
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if ($header['comment_len'] != 0){
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$header['comment'] = fread($zip, $header['comment_len']);
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}else{
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$header['comment'] = '';
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}
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if ($header['mdate'] && $header['mtime']) {
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$hour = ($header['mtime'] & 0xF800) >> 11;
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$minute = ($header['mtime'] & 0x07E0) >> 5;
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$seconde = ($header['mtime'] & 0x001F)*2;
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$year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
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$month = ($header['mdate'] & 0x01E0) >> 5;
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$day = $header['mdate'] & 0x001F;
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$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
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} else {
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$header['mtime'] = time();
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}
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$header['stored_filename'] = $header['filename'];
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$header['status'] = 'ok';
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if (substr($header['filename'], -1) == '/') $header['external'] = 0x41FF0010;
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return $header;
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}
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/**
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* @param resource $zip
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* @param string $zip_name filename path to file
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* @return array
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*/
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function ReadCentralDir($zip,$zip_name) {
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$size = filesize($zip_name);
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if ($size < 277){
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$maximum_size = $size;
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} else {
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$maximum_size=277;
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}
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@fseek($zip, $size-$maximum_size);
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$pos = ftell($zip);
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$bytes = 0x00000000;
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while ($pos < $size) {
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$byte = @fread($zip, 1);
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$bytes=(($bytes << 8) & 0xFFFFFFFF) | Ord($byte);
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if ($bytes == 0x504b0506){
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$pos++;
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break;
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}
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$pos++;
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}
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$data=unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',
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fread($zip, 18));
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$centd = array();
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if ($data['comment_size'] != 0){
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$centd['comment'] = fread($zip, $data['comment_size']);
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} else {
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$centd['comment'] = '';
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}
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$centd['entries'] = $data['entries'];
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$centd['disk_entries'] = $data['disk_entries'];
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$centd['offset'] = $data['offset'];
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$centd['disk_start'] = $data['disk_start'];
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$centd['size'] = $data['size'];
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$centd['disk'] = $data['disk'];
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return $centd;
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}
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/**
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* @param array $header
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* @param string $to filename path to file
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* @param resource $zip
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* @return bool|int
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*/
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function ExtractFile($header,$to,$zip) {
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$header = $this->readfileheader($zip, $header);
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if(substr($to,-1)!="/") $to.="/";
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if(substr($header['filename'],-1)=="/") {
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$this->_mkdir($to.$header['filename']);
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return +2;
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}
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if (!$this->_mkdir($to.dirname($header['filename']))) return (-1);
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if (!array_key_exists("external", $header) || (!($header['external']==0x41FF0010)&&!($header['external']==16))) {
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if ($header['compression']==0) {
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$fp = @fopen($to.$header['filename'], 'wb');
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if(!$fp) return(-1);
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$size = $header['compressed_size'];
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while ($size != 0) {
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$read_size = ($size < 2048 ? $size : 2048);
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$buffer = fread($zip, $read_size);
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$binary_data = pack('a'.$read_size, $buffer);
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@fwrite($fp, $binary_data, $read_size);
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$size -= $read_size;
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}
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fclose($fp);
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touch($to.$header['filename'], $header['mtime']);
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}else{
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if (!is_dir(dirname($to.$header['filename']))) $this->_mkdir(dirname($to.$header['filename']));
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$fp = fopen($to.$header['filename'].'.gz','wb');
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if(!$fp) return(-1);
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$binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
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Chr(0x00), time(), Chr(0x00), Chr(3));
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fwrite($fp, $binary_data, 10);
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$size = $header['compressed_size'];
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while ($size != 0) {
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$read_size = ($size < 1024 ? $size : 1024);
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$buffer = fread($zip, $read_size);
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$binary_data = pack('a'.$read_size, $buffer);
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@fwrite($fp, $binary_data, $read_size);
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$size -= $read_size;
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}
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$binary_data = pack('VV', $header['crc'], $header['size']);
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fwrite($fp, $binary_data,8);
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fclose($fp);
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$gzp = @gzopen($to.$header['filename'].'.gz','rb');
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if(!$gzp){
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@gzclose($gzp);
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@unlink($to.$header['filename']);
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die("Archive is compressed whereas ZLIB is not enabled.");
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}
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$fp = @fopen($to.$header['filename'],'wb');
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if(!$fp) return(-1);
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$size = $header['size'];
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while ($size != 0) {
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$read_size = ($size < 2048 ? $size : 2048);
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$buffer = gzread($gzp, $read_size);
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$binary_data = pack('a'.$read_size, $buffer);
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@fwrite($fp, $binary_data, $read_size);
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$size -= $read_size;
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}
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fclose($fp);
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gzclose($gzp);
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touch($to.$header['filename'], $header['mtime']);
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@unlink($to.$header['filename'].'.gz');
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}
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}
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return true;
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}
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/**
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* centralize mkdir calls and use dokuwiki io functions
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*
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* @author Christopher Smith <chris@jalakai.co.uk>
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*
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* @param string $d filename path to file
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* @return bool|int|string
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*/
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function _mkdir($d) {
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return io_mkdir_p($d);
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}
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/**
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* @param string $zn
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* @param string $name
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* @return null|string
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*/
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function ExtractStr($zn, $name) {
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$zip = @fopen($zn,'rb');
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if(!$zip) return(null);
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$cdir = $this->ReadCentralDir($zip,$zn);
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$pos_entry = $cdir['offset'];
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for ($i=0; $i<$cdir['entries']; $i++) {
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@fseek($zip, $pos_entry);
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$header = $this->ReadCentralFileHeaders($zip);
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$header['index'] = $i;
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$pos_entry = ftell($zip);
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@rewind($zip);
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fseek($zip, $header['offset']);
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if ($name == $header['stored_filename'] || $name == $header['filename']) {
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$str = $this->ExtractStrFile($header, $zip);
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fclose($zip);
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return $str;
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}
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}
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fclose($zip);
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return null;
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}
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/**
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* @param array $header
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* @param resource $zip
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* @return null|string
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*/
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function ExtractStrFile($header,$zip) {
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$hdr = $this->readfileheader($zip, $header);
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$binary_data = '';
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if (!($header['external']==0x41FF0010) && !($header['external']==16)) {
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if ($header['compression']==0) {
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while ($size != 0) {
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$read_size = ($size < 2048 ? $size : 2048);
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$buffer = fread($zip, $read_size);
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$binary_data .= pack('a'.$read_size, $buffer);
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$size -= $read_size;
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}
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return $binary_data;
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} else {
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$size = $header['compressed_size'];
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if ($size == 0) {
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return '';
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}
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//Just in case
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if ($size > ($this->_ret_bytes(ini_get('memory_limit'))/2)) {
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die("Compressed file is to huge to be uncompress in memory.");
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}
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while ($size != 0)
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{
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$read_size = ($size < 2048 ? $size : 2048);
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$buffer = fread($zip, $read_size);
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$binary_data .= pack('a'.$read_size, $buffer);
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$size -= $read_size;
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}
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$str = gzinflate($binary_data, $header['size']);
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if ($header['crc'] == crc32($str)) {
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return $str;
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} else {
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die("Crc Error");
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}
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}
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}
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return null;
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}
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/**
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* @param string $val
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* @return int|string
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*/
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function _ret_bytes($val) {
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$val = trim($val);
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$last = $val{strlen($val)-1};
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switch($last) {
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case 'k':
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case 'K':
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return (int) $val * 1024;
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break;
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case 'm':
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case 'M':
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return (int) $val * 1048576;
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break;
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default:
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return $val;
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}
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}
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}
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