/include/phpzip.php
PHP | 211 lines | 173 code | 1 blank | 37 comment | 21 complexity | 86592290e916551031bb712db84763b1 MD5 | raw file
- <?php
- /**
- * https://github.com/Bigjoos/
- * Licence Info: GPL
- * Copyright (C) 2010 U-232 v.3
- * A bittorrent tracker source based on TBDev.net/tbsource/bytemonsoon.
- * Project Leaders: Mindless, putyn.
- *
- */
- //
- // PHPZip v1.2 by Sext (sext@neud.net) 2002-11-18
- // (Changed: 2003-03-01)
- //
- // Makes zip archive
- //
- // Based on "Zip file creation class", uses zLib
- //
- // Examples in sample1.php, sample2.php and sample3.php
- //
- class PHPZip
- {
- function Zip($dir, $zipfilename)
- {
- if (@function_exists('gzcompress')) {
- $curdir = getcwd();
- if (is_array($dir)) {
- $filelist = $dir;
- } else {
- $filelist = $this->GetFileList($dir);
- }
- if ((!empty($dir)) && (!is_array($dir)) && (file_exists($dir))) chdir($dir);
- else chdir($curdir);
- if (count($filelist) > 0) {
- foreach ($filelist as $filename) {
- if (is_file($filename)) {
- $fd = fopen($filename, "r");
- $content = fread($fd, filesize($filename));
- fclose($fd);
- if (is_array($dir)) $filename = basename($filename);
- $this->addFile($content, $filename);
- }
- }
- $out = $this->file();
- chdir($curdir);
- $fp = fopen($zipfilename, "w");
- fwrite($fp, $out, strlen($out));
- fclose($fp);
- }
- return 1;
- } else return 0;
- }
- function GetFileList($dir)
- {
- if (file_exists($dir)) {
- $args = func_get_args();
- $pref = $args[1];
- $dh = opendir($dir);
- while ($files = readdir($dh)) {
- if (($files != ".") && ($files != "..")) {
- if (is_dir($dir.$files)) {
- $curdir = getcwd();
- chdir($dir.$files);
- $file = array_merge($file, $this->GetFileList("", "$pref$files/"));
- chdir($curdir);
- } else $file[] = $pref.$files;
- }
- }
- closedir($dh);
- }
- return $file;
- }
- var $datasec = array();
- var $ctrl_dir = array();
- var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
- var $old_offset = 0;
- /**
- * Converts an Unix timestamp to a four byte DOS date and time format (date
- * in high two bytes, time in low two bytes allowing magnitude comparison).
- *
- * @param integer the current Unix timestamp
- *
- * @return integer the current date in a four byte DOS format
- *
- * @access private
- */
- function unix2DosTime($unixtime = 0)
- {
- $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
- if ($timearray['year'] < 1980) {
- $timearray['year'] = 1980;
- $timearray['mon'] = 1;
- $timearray['mday'] = 1;
- $timearray['hours'] = 0;
- $timearray['minutes'] = 0;
- $timearray['seconds'] = 0;
- } // end if
- return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
- } // end of the 'unix2DosTime()' method
-
- /**
- * Adds "file" to archive
- *
- * @param string file contents
- * @param string name of the file in the archive (may contains the path)
- * @param integer the current timestamp
- *
- * @access public
- */
- function addFile($data, $name, $time = 0)
- {
- $name = str_replace('\\', '/', $name);
- $dtime = dechex($this->unix2DosTime($time));
- $hexdtime = '\x'.$dtime[6].$dtime[7].'\x'.$dtime[4].$dtime[5].'\x'.$dtime[2].$dtime[3].'\x'.$dtime[0].$dtime[1];
- eval('$hexdtime = "'.$hexdtime.'";');
- $fr = "\x50\x4b\x03\x04";
- $fr.= "\x14\x00"; // ver needed to extract
- $fr.= "\x00\x00"; // gen purpose bit flag
- $fr.= "\x08\x00"; // compression method
- $fr.= $hexdtime; // last mod time and date
- // "local file header" segment
- $unc_len = strlen($data);
- $crc = crc32($data);
- $zdata = gzcompress($data);
- $c_len = strlen($zdata);
- $zdata = substr(substr($zdata, 0, strlen($zdata) - 4) , 2); // fix crc bug
- $fr.= pack('V', $crc); // crc32
- $fr.= pack('V', $c_len); // compressed filesize
- $fr.= pack('V', $unc_len); // uncompressed filesize
- $fr.= pack('v', strlen($name)); // length of filename
- $fr.= pack('v', 0); // extra field length
- $fr.= $name;
- // "file data" segment
- $fr.= $zdata;
- // "data descriptor" segment (optional but necessary if archive is not
- // served as file)
- $fr.= pack('V', $crc); // crc32
- $fr.= pack('V', $c_len); // compressed filesize
- $fr.= pack('V', $unc_len); // uncompressed filesize
- // add this entry to array
- $this->datasec[] = $fr;
- $new_offset = strlen(implode('', $this->datasec));
- // now add to central directory record
- $cdrec = "\x50\x4b\x01\x02";
- $cdrec.= "\x00\x00"; // version made by
- $cdrec.= "\x14\x00"; // version needed to extract
- $cdrec.= "\x00\x00"; // gen purpose bit flag
- $cdrec.= "\x08\x00"; // compression method
- $cdrec.= $hexdtime; // last mod time & date
- $cdrec.= pack('V', $crc); // crc32
- $cdrec.= pack('V', $c_len); // compressed filesize
- $cdrec.= pack('V', $unc_len); // uncompressed filesize
- $cdrec.= pack('v', strlen($name)); // length of filename
- $cdrec.= pack('v', 0); // extra field length
- $cdrec.= pack('v', 0); // file comment length
- $cdrec.= pack('v', 0); // disk number start
- $cdrec.= pack('v', 0); // internal file attributes
- $cdrec.= pack('V', 32); // external file attributes - 'archive' bit set
- $cdrec.= pack('V', $this->old_offset); // relative offset of local header
- $this->old_offset = $new_offset;
- $cdrec.= $name;
- // optional extra field, file comment goes here
- // save to central directory
- $this->ctrl_dir[] = $cdrec;
- } // end of the 'addFile()' method
-
- /**
- * Dumps out file
- *
- * @return string the zipped file
- *
- * @access public
- */
- function file()
- {
- $data = implode('', $this->datasec);
- $ctrldir = implode('', $this->ctrl_dir);
- return $data.$ctrldir.$this->eof_ctrl_dir.pack('v', sizeof($this->ctrl_dir)). // total # of entries "on this disk"
- pack('v', sizeof($this->ctrl_dir)). // total # of entries overall
- pack('V', strlen($ctrldir)). // size of central dir
- pack('V', strlen($data)). // offset to start of central dir
- "\x00\x00"; // .zip file comment length
-
- } // end of the 'file()' method
- function forceDownload($archiveName)
- {
- $headerInfo = '';
- if (ini_get('zlib.output_compression')) {
- ini_set('zlib.output_compression', 'Off');
- }
- // Security checks
- if ($archiveName == "") {
- echo "<html><title>Public Photo Directory - Download </title><body><br /><b>ERROR:</b> The download file was NOT SPECIFIED.</body></html>";
- exit;
- } elseif (!file_exists($archiveName)) {
- echo "<html><title>Public Photo Directory - Download </title><body><br /><b>ERROR:</b> File not found.</body></html>";
- exit;
- }
- header("Pragma: public");
- header("Expires: 0");
- header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
- header("Cache-Control: private", false);
- header("Content-Type: application/zip");
- header("Content-Encoding: zlib,deflate,gzip");
- header("Content-Disposition: attachment; filename=".basename($archiveName).";");
- header("Content-Transfer-Encoding: binary");
- header("Content-Length: ".filesize($archiveName));
- readfile("$archiveName");
- }
- } // end of the 'PHPZip' class
- ?>