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azammitdcarf
273
include/limesurvey/admin/classes/phpzip/phpzip.inc.php
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273
include/limesurvey/admin/classes/phpzip/phpzip.inc.php
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<?php
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#
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# PHPZip v1.2 by Sext (sext@neud.net) 2002-11-18
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# (Changed: 2003-03-01)
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#
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# Makes zip archive
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#
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# Based on "Zip file creation class", uses zLib
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#
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#
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# Modified by Jason Cleeland - removed "subdirectory" capacity for LimeSurvey use
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class PHPZip
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{
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function Zip($dir, $zipfilename)
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{
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if (@function_exists('gzcompress'))
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{
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$curdir = getcwd();
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if (is_array($dir))
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{
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$filelist = $dir;
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}
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else
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{
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$filelist = $this -> GetFileList($dir);
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}
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if ((!empty($dir))&&(!is_array($dir))&&(file_exists($dir))) chdir($dir);
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else chdir($curdir);
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if (count($filelist)>0)
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{
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foreach($filelist as $filename)
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{
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if (is_file($filename))
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{
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$fd = fopen ($filename, "r");
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$content = fread ($fd, filesize ($filename));
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fclose ($fd);
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if (is_array($dir)) $filename = basename($filename);
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$this -> addFile($content, $filename);
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}
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}
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$out = $this -> file();
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chdir($curdir);
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$fp = fopen($zipfilename, "w");
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fwrite($fp, $out, strlen($out));
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fclose($fp);
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}
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return 1;
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}
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else return 0;
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}
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function GetFileList($dir)
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{
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$file=Array();
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if (file_exists($dir))
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{
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$args = func_get_args();
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if(isset($args[1])) {$pref = $args[1];} else {$pref="";}
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$dh = opendir($dir);
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while($files = readdir($dh))
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{
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if (($files!=".")&&($files!=".."))
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{
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if (!is_dir($dir.$files))
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{
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$file[]=$pref.$files;
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}
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}
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}
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closedir($dh);
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}
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return $file;
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}
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var $datasec = array();
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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 $old_offset = 0;
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/**
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* Converts an Unix timestamp to a four byte DOS date and time format (date
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* in high two bytes, time in low two bytes allowing magnitude comparison).
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*
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* @param integer the current Unix timestamp
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*
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* @return integer the current date in a four byte DOS format
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*
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* @access private
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*/
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function unix2DosTime($unixtime = 0) {
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$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
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if ($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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} // end if
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return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
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($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
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} // end of the 'unix2DosTime()' method
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/**
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* Adds "file" to archive
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*
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* @param string file contents
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* @param string name of the file in the archive (may contains the path)
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* @param integer the current timestamp
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*
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* @access public
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*/
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function addFile($data, $name, $time = 0)
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{
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$name = str_replace('\\', '/', $name);
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$dtime = dechex($this->unix2DosTime($time));
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$hexdtime = '\x' . $dtime[6] . $dtime[7]
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. '\x' . $dtime[4] . $dtime[5]
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. '\x' . $dtime[2] . $dtime[3]
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. '\x' . $dtime[0] . $dtime[1];
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eval('$hexdtime = "' . $hexdtime . '";');
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$fr = "\x50\x4b\x03\x04";
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$fr .= "\x14\x00"; // ver needed to extract
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$fr .= "\x00\x00"; // gen purpose bit flag
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$fr .= "\x08\x00"; // compression method
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$fr .= $hexdtime; // last mod time and date
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// "local file header" segment
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$unc_len = strlen($data);
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$crc = crc32($data);
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$zdata = gzcompress($data);
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$c_len = strlen($zdata);
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$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
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$fr .= pack('V', $crc); // crc32
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$fr .= pack('V', $c_len); // compressed filesize
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$fr .= pack('V', $unc_len); // uncompressed filesize
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$fr .= pack('v', strlen($name)); // length of filename
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$fr .= pack('v', 0); // extra field length
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$fr .= $name;
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// "file data" segment
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$fr .= $zdata;
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// "data descriptor" segment (optional but necessary if archive is not
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// served as file)
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$fr .= pack('V', $crc); // crc32
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$fr .= pack('V', $c_len); // compressed filesize
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$fr .= pack('V', $unc_len); // uncompressed filesize
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// add this entry to array
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$this -> datasec[] = $fr;
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$new_offset = strlen(implode('', $this->datasec));
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// now add to central directory record
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$cdrec = "\x50\x4b\x01\x02";
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$cdrec .= "\x00\x00"; // version made by
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$cdrec .= "\x14\x00"; // version needed to extract
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$cdrec .= "\x00\x00"; // gen purpose bit flag
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$cdrec .= "\x08\x00"; // compression method
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$cdrec .= $hexdtime; // last mod time & date
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$cdrec .= pack('V', $crc); // crc32
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$cdrec .= pack('V', $c_len); // compressed filesize
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$cdrec .= pack('V', $unc_len); // uncompressed filesize
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$cdrec .= pack('v', strlen($name) ); // length of filename
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$cdrec .= pack('v', 0 ); // extra field length
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$cdrec .= pack('v', 0 ); // file comment length
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$cdrec .= pack('v', 0 ); // disk number start
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$cdrec .= pack('v', 0 ); // internal file attributes
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$cdrec .= pack('V', 32 ); // external file attributes - 'archive' bit set
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$cdrec .= pack('V', $this -> old_offset ); // relative offset of local header
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$this -> old_offset = $new_offset;
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$cdrec .= $name;
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// optional extra field, file comment goes here
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// save to central directory
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$this -> ctrl_dir[] = $cdrec;
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} // end of the 'addFile()' method
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/**
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* Dumps out file
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*
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* @return string the zipped file
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*
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* @access public
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*/
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function file()
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{
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$data = implode('', $this -> datasec);
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$ctrldir = implode('', $this -> ctrl_dir);
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return
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$data .
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$ctrldir .
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$this -> eof_ctrl_dir .
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pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk"
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pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall
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pack('V', strlen($ctrldir)) . // size of central dir
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pack('V', strlen($data)) . // offset to start of central dir
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"\x00\x00"; // .zip file comment length
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} // end of the 'file()' method
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// This comes from http://de.tikiwiki.org/xref-BRANCH-1-9/nav.html?lib/sheet/include/org/apicnet/io/archive/CZip.php.source.html
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function extract($dir, $zipfilename){
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if (function_exists("zip_open")) {
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//$dir = eregi_replace("(\..*$)", "", $zipfilename);
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$this->createDir($dir);
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$zip = zip_open($zipfilename);
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if ($zip) {
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while ($zip_entry = zip_read($zip)) {
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if (zip_entry_open($zip, $zip_entry, "r")) {
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$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
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// if (eregi("(\/)", zip_entry_name($zip_entry))) $this->createDir($dir."/".eregi_replace("\/.*$", "", zip_entry_name($zip_entry)));
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// LimeSurvey Only extract first dir for the moment
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if ( ! eregi("(\/)", zip_entry_name($zip_entry)))
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{
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$this->createFile($dir."/".zip_entry_name($zip_entry), $buf,zip_entry_filesize($zip_entry));
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}
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zip_entry_close($zip_entry);
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}
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}
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zip_close($zip);
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}
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else
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{
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return "Error:OpenZip";
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}
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}
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return 'OK';
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}
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function createDir($dir){
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if (eregi("(\/$)", $dir)) @mkdir (substr($dir, 0, strlen($dir) - 1));
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else @mkdir ($dir);
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}
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// This comes from http://fr.php.net/zip
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function createFile($file, $data, $size){
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//$file = new File($file, TRUE);
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//if ($file->exists()) {
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// $file->delFile();
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// $file->createFile();
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//}
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//$file->writeData($data);
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if (is_file($file))
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{
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unlink($file);
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}
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$fopen = fopen($file, "w");
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fwrite($fopen,$data,$size);
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}
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} // end of the 'PHPZip' class
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?>
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