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   1  <?php
   2  /*************************************************************************************
   3     Copyright notice
   4     
   5     (c) 2002-2009 Oliver Georgi (oliver@phpwcms.de) // All rights reserved.
   6   
   7     This script is part of PHPWCMS. The PHPWCMS web content management system is
   8     free software; you can redistribute it and/or modify it under the terms of
   9     the GNU General Public License as published by the Free Software Foundation;
  10     either version 2 of the License, or (at your option) any later version.
  11    
  12     The GNU General Public License can be found at http://www.gnu.org/copyleft/gpl.html
  13     A copy is found in the textfile GPL.txt and important notices to the license 
  14     from the author is found in LICENSE.txt distributed with these scripts.
  15    
  16     This script is distributed in the hope that it will be useful, but WITHOUT ANY 
  17     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  18     PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  19   
  20     This copyright notice MUST APPEAR in all copies of the script!
  21  *************************************************************************************/
  22  
  23  
  24  function _getFileInfo($value, $limit='1', $mode='hash') {
  25  
  26      $sql = '';
  27  
  28      switch($mode) {
  29  
  30          case 'hash':    $sql  = "SELECT * FROM ".DB_PREPEND."phpwcms_file WHERE f_aktiv=1 AND ";
  31                          $sql .= "f_trash=0 AND f_public=1 AND ";
  32                          $sql .= "f_hash='".aporeplace($value)."'";
  33                          if( !FEUSER_LOGIN_STATUS ) {
  34                              $sql .= ' AND f_granted=0';
  35                          }
  36                          if($limit) {
  37                              $sql .= " LIMIT ".$limit;
  38                          }
  39                          break;
  40      }
  41  
  42      return _dbQuery($sql);
  43      
  44  }
  45  
  46  function dl_file_resume($file='', $fileinfo=array(), $onsuccess = false) {
  47  
  48      // function based on this one here:
  49      // http://www.php.net/manual/de/function.fread.php#63893
  50  
  51      //First, see if the file exists
  52      if (!is_file($file) && connection_status()) return false;
  53      
  54      //Gather relevent info about file
  55      $filename         = empty($fileinfo['realfname'])    ? basename($file) : $fileinfo['realfname'];
  56      $disposition    = empty($fileinfo['method'])    ? 'attachment' : $fileinfo['method'];
  57      
  58      if($disposition == 'attachment') {
  59      
  60          $fileinfo['mimetype'] = "application/force-download";
  61      
  62      }
  63      
  64      if(empty($fileinfo['mimetype']) && empty($fileinfo['extension'])) {
  65      
  66          $file_extension    =  strtolower(substr(strrchr($filename,"."),1));
  67      
  68          //This will set the Content-Type to the appropriate setting for the file
  69          switch( $file_extension ) {
  70              case "exe":     $ctype="application/octet-stream";     break;
  71              case "zip":     $ctype="application/zip";             break;
  72              case "mp3":     $ctype="audio/mpeg";                 break;
  73              case "mpg":        $ctype="video/mpeg";                 break;
  74              case "avi":     $ctype="video/x-msvideo";             break;
  75              default:         $ctype="application/force-download";
  76          }
  77          
  78      } else {
  79      
  80          $ctype             = $fileinfo['mimetype'];
  81          $file_extension    = $fileinfo['extension'];
  82      
  83      }
  84  
  85      //Begin writing headers
  86      header('Cache-Control: ');
  87      header('Cache-Control: public');
  88      header('Pragma: ');
  89      
  90      //Use the switch-generated Content-Type
  91      header('Content-Type: '.$ctype);
  92      
  93      
  94      if (isset($_SERVER['HTTP_USER_AGENT']) && strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE')) {
  95          // workaround for IE filename bug with multiple periods / multiple dots in filename
  96          // that adds square brackets to filename - eg. setup.abc.exe becomes setup[1].abc.exe
  97          $filename = preg_replace('/\./', '%2e', $filename, substr_count($filename, '.') - 1);
  98      }
  99      
 100      
 101      //header('Accept-Ranges: bytes');
 102      
 103      $size = filesize($file);
 104  
 105      
 106      header('Content-Length: '.$size);
 107      header('Content-Transfer-Encoding: binary'.LF);
 108      
 109      
 110      //check if http_range is sent by browser (or download manager)
 111      /*
 112      if(isset($_SERVER['HTTP_RANGE'])) {
 113  
 114          //if yes, download missing part
 115          list($a, $range)    = explode('=', $_SERVER['HTTP_RANGE']);
 116          $range                = explode('-', $range);
 117          $seek_start            = empty($range[0]) ? 0 : intval($range[0]);
 118          $seek_end            = empty($range[1]) ? 0 : intval($range[1]);
 119  
 120          header('HTTP/1.1 206 Partial Content');
 121          header('Content-Length: '.($seek_end - $seek_start + 1));
 122          header('Content-Range: bytes '.$seek_start.'-'.$seek_end.'/'.$size);
 123  
 124      } else {
 125  
 126          $rage = 0;
 127          header('Content-Range: bytes 0-'. ($size - 1) .'/'.$size);
 128          header('Content-Length: '.$size);
 129  
 130      }
 131      */
 132      
 133      header('Content-Disposition: '.$disposition.'; filename="'.$filename.'"');
 134      
 135  
 136      //reset time limit for big files
 137      @set_time_limit(0);
 138  
 139      //open the file
 140      $fp = fopen($file, 'rb');
 141  
 142      //seek to start of missing part
 143      //fseek($fp, $range);
 144  
 145      //start buffered download
 146      while(!feof($fp) && !connection_status()){
 147      
 148          print(fread($fp, 1024*8));
 149          flush();
 150          //ob_flush();
 151      }
 152      fclose($fp);
 153  
 154      return ($onsuccess && !connection_status() && !connection_aborted()) ? true : false;
 155  }
 156  
 157  
 158  ?>