[Sommaire] [Imprimer]

   1  <?php
   2  //
   3  // Definition of eZBinaryFileHandler class
   4  //
   5  // Created on: <30-Apr-2002 16:47:08 bf>
   6  //
   7  // SOFTWARE NAME: eZ publish
   8  // SOFTWARE RELEASE: 3.9.0
   9  // BUILD VERSION: 17785
  10  // COPYRIGHT NOTICE: Copyright (C) 1999-2006 eZ systems AS
  11  // SOFTWARE LICENSE: GNU General Public License v2.0
  12  // NOTICE: >
  13  //   This program is free software; you can redistribute it and/or
  14  //   modify it under the terms of version 2.0  of the GNU General
  15  //   Public License as published by the Free Software Foundation.
  16  //
  17  //   This program is distributed in the hope that it will be useful,
  18  //   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  //   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  //   GNU General Public License for more details.
  21  //
  22  //   You should have received a copy of version 2.0 of the GNU General
  23  //   Public License along with this program; if not, write to the Free
  24  //   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  25  //   MA 02110-1301, USA.
  26  //
  27  //
  28  
  29  /*!
  30    \class eZFilePasstroughHandler ezfilepasstroughhandler.php
  31    \ingroup eZBinaryHandlers
  32    \brief Handles file downloading by passing the file trough PHP
  33  
  34  */
  35  include_once ( "kernel/classes/datatypes/ezbinaryfile/ezbinaryfile.php" );
  36  include_once ( "kernel/classes/ezbinaryfilehandler.php" );
  37  define( "EZ_FILE_PASSTROUGH_ID", 'ezfilepasstrough' );
  38  
  39  class eZFilePasstroughHandler extends eZBinaryFileHandler
  40  {
  41      function eZFilePasstroughHandler()
  42      {
  43          $this->eZBinaryFileHandler( EZ_FILE_PASSTROUGH_ID, "PHP passtrough", EZ_BINARY_FILE_HANDLE_DOWNLOAD );
  44      }
  45  
  46      function handleFileDownload( &$contentObject, &$contentObjectAttribute, $type,
  47                                   $fileInfo )
  48      {
  49          $fileName = $fileInfo['filepath'];
  50  
  51          // VS-DBFILE
  52  
  53          require_once ( 'kernel/classes/ezclusterfilehandler.php' );
  54          $file = eZClusterFileHandler::instance( $fileName );
  55  
  56          if ( $fileName != "" and $file->exists() )
  57          {
  58              $file->fetch();
  59              $fileSize = $file->size();
  60              $mimeType =  $fileInfo['mime_type'];
  61              $originalFileName = $fileInfo['original_filename'];
  62              $contentLength = $fileSize;
  63              $fileOffset = false;
  64              $fileLength = false;
  65              if ( isset( $_SERVER['HTTP_RANGE'] ) )
  66              {
  67                  $httpRange = trim( $_SERVER['HTTP_RANGE'] );
  68                  if ( preg_match( "/^bytes=([0-9]+)-$/", $httpRange, $matches ) )
  69                  {
  70                      $fileOffset = $matches[1];
  71                      header( "Content-Range: bytes $fileOffset-" . $fileSize - 1 . "/$fileSize" );
  72                      header( "HTTP/1.1 206 Partial content" );
  73                      $contentLength -= $fileOffset;
  74                  }
  75              }
  76              // Figure out the time of last modification of the file right way to get the file mtime ... the
  77              $fileModificationTime = filemtime( $fileName );
  78  
  79              ob_clean();
  80              header( "Pragma: " );
  81              header( "Cache-Control: " );
  82              /* Set cache time out to 10 minutes, this should be good enough to work around an IE bug */
  83              header( "Expires: ". gmdate('D, d M Y H:i:s T', time() + 600) );
  84              header( "Last-Modified: ". gmdate( 'D, d M Y H:i:s T', $fileModificationTime ) );
  85              header( "Content-Length: $contentLength" );
  86              header( "Content-Type: $mimeType" );
  87              header( "X-Powered-By: eZ publish" );
  88              header( "Content-disposition: attachment; filename=\"$originalFileName\"" );
  89              header( "Content-Transfer-Encoding: binary" );
  90              header( "Accept-Ranges: bytes" );
  91  
  92              $fh = fopen( "$fileName", "rb" );
  93              if ( $fileOffset )
  94              {
  95                  eZDebug::writeDebug( $fileOffset, "seeking to fileoffset" );
  96                  fseek( $fh, $fileOffset );
  97              }
  98  
  99              ob_end_clean();
 100              fpassthru( $fh );
 101              fclose( $fh );
 102              fflush( $fh );
 103  
 104              // VS-DBFILE : NOTE: We don't remove fetched file here to avoid refetching on each download.
 105              // We may need a way to purge obsolete files though.
 106  
 107              //$file->deleteLocal();
 108  
 109              eZExecution::cleanExit();
 110          }
 111          return EZ_BINARY_FILE_RESULT_UNAVAILABLE;
 112      }
 113  }
 114  
 115  ?>