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   1  <?php
   2  /**
   3  * @version $Id: zip.lib.php 10381 2008-06-01 03:35:53Z pasamio $
   4  * @package        Joomla
   5  */
   6  
   7  
   8  // $Id: zip.lib.php 10381 2008-06-01 03:35:53Z pasamio $
   9  //
  10  // The "GNU General Public License" (GPL) is available at
  11  // http://www.gnu.org/licenses/gpl-2.0.html.
  12  //
  13  //  http://www.zend.com/codex.php?id=535&single=1
  14  //    By Eric Mueller <eric@themepark.com>
  15  //
  16  //    http://www.zend.com/codex.php?id=470&single=1
  17  //    by Denis125 <webmaster@atlant.ru>
  18  //
  19  //    A patch from Peter Listiak <mlady@users.sourceforge.net> for last modified
  20  //    date and time of the compressed file
  21  //
  22  //    Official ZIP file format: http://www.pkware.com/appnote.txt
  23  
  24  class zipfile {
  25      var $datasec = array();
  26      var $ctrl_dir = array();
  27      var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
  28      var $old_offset = 0;
  29  
  30  	function unix2DosTime($unixtime = 0) {
  31          $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
  32          if ($timearray['year'] < 1980) {
  33              $timearray['year']= 1980;
  34              $timearray['mon'] = 1;
  35              $timearray['mday']= 1;
  36              $timearray['hours']    = 0;
  37              $timearray['minutes'] = 0;
  38              $timearray['seconds'] = 0;
  39          }
  40          return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
  41      }
  42  
  43  	function addFile($data, $name, $time = 0) {
  44          $name = str_replace('\\', '/', $name);
  45  
  46          $dtime= dechex($this->unix2DosTime($time));
  47          $hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];
  48          eval('$hexdtime = "' . $hexdtime . '";');
  49  
  50          $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00" . $hexdtime;
  51  
  52          $unc_len = strlen($data);
  53          $crc = crc32($data);
  54          $zdata = gzcompress($data);
  55          $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
  56          $c_len    = strlen($zdata);
  57          $fr .= pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len) . pack('v', strlen($name)) . pack('v', 0) . $name . $zdata . pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len);
  58  
  59          $this -> datasec[] = $fr;
  60          $new_offset = strlen(implode('', $this->datasec));
  61  
  62          $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00" . $hexdtime . pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len) . pack('v', strlen($name)) . pack('v', 0) . pack('v', 0) . pack('v', 0) . pack('v', 0) . pack('V', 32) . pack('V', $this -> old_offset );
  63          $this -> old_offset = $new_offset;
  64          $cdrec .= $name;
  65          $this -> ctrl_dir[] = $cdrec;
  66      }
  67  
  68  	function file() {
  69          $data = implode('', $this -> datasec);
  70          $ctrldir = implode('', $this -> ctrl_dir);
  71          return $data . $ctrldir . $this -> eof_ctrl_dir . pack('v', sizeof($this -> ctrl_dir)) .  pack('v', sizeof($this -> ctrl_dir)) .  pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
  72      }
  73  }
  74  ?>