diff options
Diffstat (limited to 'inc/ZipLib.class.php')
| -rw-r--r-- | inc/ZipLib.class.php | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/inc/ZipLib.class.php b/inc/ZipLib.class.php new file mode 100644 index 000000000..cf89a40a4 --- /dev/null +++ b/inc/ZipLib.class.php @@ -0,0 +1,504 @@ +<?php + +/** + * @author bouchon + * @link http://dev.maxg.info + * @link http://forum.maxg.info + * + * Modified for Dokuwiki + * @author Christopher Smith <chris@jalakai.co.uk> + */ +class ZipLib { + + var $datasec; + var $ctrl_dir = array(); + var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; + var $old_offset = 0; + var $dirs = Array("."); + + function get_List($zip_name) { + $zip = @fopen($zip_name, 'rb'); + if(!$zip) return(0); + $centd = $this->ReadCentralDir($zip,$zip_name); + + @rewind($zip); + @fseek($zip, $centd['offset']); + + for ($i=0; $i<$centd['entries']; $i++) { + $header = $this->ReadCentralFileHeaders($zip); + $header['index'] = $i; + + $info['filename'] = $header['filename']; + $info['stored_filename'] = $header['stored_filename']; + $info['size'] = $header['size']; + $info['compressed_size'] = $header['compressed_size']; + $info['crc'] = strtoupper(dechex( $header['crc'] )); + $info['mtime'] = $header['mtime']; + $info['comment'] = $header['comment']; + $info['folder'] = ($header['external']==0x41FF0010||$header['external']==16)?1:0; + $info['index'] = $header['index']; + $info['status'] = $header['status']; + $ret[]=$info; + + unset($header); + } + return $ret; + } + + function Add($files,$compact) { + if(!is_array($files[0])) $files=Array($files); + + for($i=0;$files[$i];$i++){ + $fn = $files[$i]; + if(!in_Array(dirname($fn[0]),$this->dirs)) + $this->add_Dir(dirname($fn[0])); + if(basename($fn[0])) + $ret[basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact); + } + return $ret; + } + + /** + * Zips recursively the $folder directory, from the $basedir directory + */ + function Compress($folder, $basedir=null, $parent=null) { + $full_path = $basedir."/".$parent.$folder; + $zip_path = $parent.$folder; + if ($zip_path) { + $zip_path .= "/"; + $this->add_dir($zip_path); + } + $dir = new DirectoryIterator($full_path); + foreach($dir as $file) { + if(!$file->isDot()) { + $filename = $file->getFilename(); + if($file->isDir()) { + $this->Compress($filename, $basedir, $zip_path); + } else { + $content = join('', file($full_path.'/'.$filename)); + $this->add_File($content, $zip_path.$filename); + } + } + } + } + + /** + * Returns the Zip file + */ + function get_file() { + $data = implode('', $this -> datasec); + $ctrldir = implode('', $this -> ctrl_dir); + + return $data . $ctrldir . $this -> eof_ctrl_dir . + pack('v', count($this->ctrl_dir)).pack('v', count($this->ctrl_dir)). + pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00"; + } + + function add_dir($name) { + $name = str_replace("\\", "/", $name); + $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"; + + $fr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) ); + $fr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0); + $this -> datasec[] = $fr; + + $new_offset = strlen(implode("", $this->datasec)); + + $cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"; + $cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) ); + $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 ); + $ext = "\xff\xff\xff\xff"; + $cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name; + + $this -> ctrl_dir[] = $cdrec; + $this -> old_offset = $new_offset; + $this -> dirs[] = $name; + } + + /** + * Add a file named $name from a string $data + */ + function add_File($data, $name, $compact = 1) { + $name = str_replace('\\', '/', $name); + $dtime = dechex($this->DosTime()); + + $hexdtime = pack('H*',$dtime[6].$dtime[7]. + $dtime[4].$dtime[5]. + $dtime[2].$dtime[3]. + $dtime[0].$dtime[1]); + + if($compact){ + $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime; + }else{ + $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime; + } + $unc_len = strlen($data); + $crc = crc32($data); + + if($compact){ + $zdata = gzcompress($data); + $c_len = strlen($zdata); + $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); + }else{ + $zdata = $data; + } + $c_len=strlen($zdata); + $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len); + $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata; + + $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len); + + $this -> datasec[] = $fr; + $new_offset = strlen(implode('', $this->datasec)); + if($compact) { + $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00"; + } else { + $cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00"; + } + $cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len); + $cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 ); + $cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 ); + $cdrec .= pack('V', $this -> old_offset ); + + $this -> old_offset = $new_offset; + $cdrec .= $name; + $this -> ctrl_dir[] = $cdrec; + return true; + } + + function DosTime() { + $timearray = getdate(); + if ($timearray['year'] < 1980) { + $timearray['year'] = 1980; + $timearray['mon'] = 1; + $timearray['mday'] = 1; + $timearray['hours'] = 0; + $timearray['minutes'] = 0; + $timearray['seconds'] = 0; + } + return (($timearray['year'] - 1980) << 25) | + ($timearray['mon'] << 21) | + ($timearray['mday'] << 16) | + ($timearray['hours'] << 11) | + ($timearray['minutes'] << 5) | + ($timearray['seconds'] >> 1); + } + + /** + * Extract a zip file $zn to the $to directory + */ + function Extract ( $zn, $to, $index = Array(-1) ) { + if(!@is_dir($to)) $this->_mkdir($to); + $ok = 0; + $zip = @fopen($zn,'rb'); + if(!$zip) return(-1); + $cdir = $this->ReadCentralDir($zip,$zn); + $pos_entry = $cdir['offset']; + + if(!is_array($index)){ + $index = array($index); + } + for($i=0; isset($index[$i]);$i++){ + if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries']) + return(-1); + } + + for ($i=0; $i<$cdir['entries']; $i++) { + @fseek($zip, $pos_entry); + $header = $this->ReadCentralFileHeaders($zip); + $header['index'] = $i; + $pos_entry = ftell($zip); + @rewind($zip); + fseek($zip, $header['offset']); + if(in_array("-1",$index)||in_array($i,$index)){ + $stat[$header['filename']]=$this->ExtractFile($header, $to, $zip); + } + } + fclose($zip); + return $stat; + } + + function ReadFileHeader($zip, $header) { + $binary_data = fread($zip, 30); + $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data); + + $header['filename'] = fread($zip, $data['filename_len']); + if ($data['extra_len'] != 0) { + $header['extra'] = fread($zip, $data['extra_len']); + } else { + $header['extra'] = ''; + } + + $header['compression'] = $data['compression']; + foreach (array('size','compressed_size','crc') as $hd) { // On ODT files, these headers are 0. Keep the previous value. + if ($data[$hd] != 0) $header[$hd] = $data[$hd]; + } + $header['flag'] = $data['flag']; + $header['mdate'] = $data['mdate']; + $header['mtime'] = $data['mtime']; + + if ($header['mdate'] && $header['mtime']){ + $hour = ($header['mtime']&0xF800)>>11; + $minute = ($header['mtime']&0x07E0)>>5; + $seconde = ($header['mtime']&0x001F)*2; + $year = (($header['mdate']&0xFE00)>>9)+1980; + $month = ($header['mdate']&0x01E0)>>5; + $day = $header['mdate']&0x001F; + $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year); + } else { + $header['mtime'] = time(); + } + + $header['stored_filename'] = $header['filename']; + $header['status'] = "ok"; + return $header; + } + + function ReadCentralFileHeaders($zip){ + $binary_data = fread($zip, 46); + $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', $binary_data); + + if ($header['filename_len'] != 0){ + $header['filename'] = fread($zip,$header['filename_len']); + }else{ + $header['filename'] = ''; + } + + if ($header['extra_len'] != 0){ + $header['extra'] = fread($zip, $header['extra_len']); + }else{ + $header['extra'] = ''; + } + + if ($header['comment_len'] != 0){ + $header['comment'] = fread($zip, $header['comment_len']); + }else{ + $header['comment'] = ''; + } + + if ($header['mdate'] && $header['mtime']) { + $hour = ($header['mtime'] & 0xF800) >> 11; + $minute = ($header['mtime'] & 0x07E0) >> 5; + $seconde = ($header['mtime'] & 0x001F)*2; + $year = (($header['mdate'] & 0xFE00) >> 9) + 1980; + $month = ($header['mdate'] & 0x01E0) >> 5; + $day = $header['mdate'] & 0x001F; + $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year); + } else { + $header['mtime'] = time(); + } + + $header['stored_filename'] = $header['filename']; + $header['status'] = 'ok'; + if (substr($header['filename'], -1) == '/') $header['external'] = 0x41FF0010; + + return $header; + } + + function ReadCentralDir($zip,$zip_name) { + $size = filesize($zip_name); + if ($size < 277){ + $maximum_size = $size; + } else { + $maximum_size=277; + } + + @fseek($zip, $size-$maximum_size); + $pos = ftell($zip); + $bytes = 0x00000000; + + while ($pos < $size) { + $byte = @fread($zip, 1); + $bytes=(($bytes << 8) & 0xFFFFFFFF) | Ord($byte); + if ($bytes == 0x504b0506){ + $pos++; + break; + } + $pos++; + } + + $data=unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', + fread($zip, 18)); + + if ($data['comment_size'] != 0){ + $centd['comment'] = fread($zip, $data['comment_size']); + } else { + $centd['comment'] = ''; + } + $centd['entries'] = $data['entries']; + $centd['disk_entries'] = $data['disk_entries']; + $centd['offset'] = $data['offset']; + $centd['disk_start'] = $data['disk_start']; + $centd['size'] = $data['size']; + $centd['disk'] = $data['disk']; + return $centd; + } + + function ExtractFile($header,$to,$zip) { + $header = $this->readfileheader($zip, $header); + + if(substr($to,-1)!="/") $to.="/"; + if(substr($header['filename'],-1)=="/") { + $this->_mkdir($to.$header['filename']); + return +2; + } + + if (!$this->_mkdir($to.dirname($header['filename']))) return (-1); + + if (!array_key_exists("external", $header) || (!($header['external']==0x41FF0010)&&!($header['external']==16))) { + if ($header['compression']==0) { + $fp = @fopen($to.$header['filename'], 'wb'); + if(!$fp) return(-1); + $size = $header['compressed_size']; + + while ($size != 0) { + $read_size = ($size < 2048 ? $size : 2048); + $buffer = fread($zip, $read_size); + $binary_data = pack('a'.$read_size, $buffer); + @fwrite($fp, $binary_data, $read_size); + $size -= $read_size; + } + fclose($fp); + touch($to.$header['filename'], $header['mtime']); + + }else{ + if (!is_dir(dirname($to.$header['filename']))) $this->_mkdir(dirname($to.$header['filename'])); + $fp = fopen($to.$header['filename'].'.gz','wb'); + if(!$fp) return(-1); + $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']), + Chr(0x00), time(), Chr(0x00), Chr(3)); + + fwrite($fp, $binary_data, 10); + $size = $header['compressed_size']; + + while ($size != 0) { + $read_size = ($size < 1024 ? $size : 1024); + $buffer = fread($zip, $read_size); + $binary_data = pack('a'.$read_size, $buffer); + @fwrite($fp, $binary_data, $read_size); + $size -= $read_size; + } + + $binary_data = pack('VV', $header['crc'], $header['size']); + fwrite($fp, $binary_data,8); + fclose($fp); + + $gzp = @gzopen($to.$header['filename'].'.gz','rb'); + if(!$gzp){ + @gzclose($gzp); + @unlink($to.$header['filename']); + die("Archive is compressed whereas ZLIB is not enabled."); + } + $fp = @fopen($to.$header['filename'],'wb'); + if(!$fp) return(-1); + $size = $header['size']; + + while ($size != 0) { + $read_size = ($size < 2048 ? $size : 2048); + $buffer = gzread($gzp, $read_size); + $binary_data = pack('a'.$read_size, $buffer); + @fwrite($fp, $binary_data, $read_size); + $size -= $read_size; + } + fclose($fp); + gzclose($gzp); + + touch($to.$header['filename'], $header['mtime']); + @unlink($to.$header['filename'].'.gz'); + } + } + return true; + } + + /** + * centralize mkdir calls and use dokuwiki io functions + * + * @author Christopher Smith <chris@jalakai.co.uk> + */ + function _mkdir($d) { + return io_mkdir_p($d); + } + + + function ExtractStr($zn, $name) { + $ok = 0; + $zip = @fopen($zn,'rb'); + if(!$zip) return(null); + $cdir = $this->ReadCentralDir($zip,$zn); + $pos_entry = $cdir['offset']; + + for ($i=0; $i<$cdir['entries']; $i++) { + @fseek($zip, $pos_entry); + $header = $this->ReadCentralFileHeaders($zip); + $header['index'] = $i; + $pos_entry = ftell($zip); + @rewind($zip); + fseek($zip, $header['offset']); + if ($name == $header['stored_filename'] || $name == $header['filename']) { + $str = $this->ExtractStrFile($header, $zip); + fclose($zip); + return $str; + } + + } + fclose($zip); + return null; + } + + function ExtractStrFile($header,$zip) { + $hdr = $this->readfileheader($zip); + $binary_data = ''; + if (!($header['external']==0x41FF0010) && !($header['external']==16)) { + if ($header['compression']==0) { + while ($size != 0) { + $read_size = ($size < 2048 ? $size : 2048); + $buffer = fread($zip, $read_size); + $binary_data .= pack('a'.$read_size, $buffer); + $size -= $read_size; + } + return $binary_data; + } else { + $size = $header['compressed_size']; + if ($size == 0) { + return ''; + } + //Just in case + if ($size > ($this->_ret_bytes(ini_get('memory_limit'))/2)) { + die("Compressed file is to huge to be uncompress in memory."); + } + while ($size != 0) + { + $read_size = ($size < 2048 ? $size : 2048); + $buffer = fread($zip, $read_size); + $binary_data .= pack('a'.$read_size, $buffer); + $size -= $read_size; + } + $str = gzinflate($binary_data, $header['size']); + if ($header['crc'] == crc32($str)) { + return $str; + } else { + die("Crc Error"); + } + } + } + return null; + } + + function _ret_bytes($val) { + $val = trim($val); + $last = $val{strlen($val)-1}; + switch($last) { + case 'k': + case 'K': + return (int) $val * 1024; + break; + case 'm': + case 'M': + return (int) $val * 1048576; + break; + default: + return $val; + } + } +} + |