includes/upload/UploadFromStash.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup upload
   5  *
   6  * Implements uploading from previously stored file.
   7  *
   8  * @author Bryan Tong Minh
   9  */
  10
  11 class UploadFromStash extends UploadBase {
  12         public static function isValidSessionKey( $key, $sessionData ) {
  13                 return !empty( $key ) &&
  14                         is_array( $sessionData ) &&
  15                         isset( $sessionData[$key] ) &&
  16                         isset( $sessionData[$key]['version'] ) &&
  17                         $sessionData[$key]['version'] == self::SESSION_VERSION;
  18         }
  19
  20         public static function isValidRequest( $request ) {
  21                 $sessionData = $request->getSessionData( 'wsUploadData' );
  22                 return self::isValidSessionKey(
  23                         $request->getInt( 'wpSessionKey' ),
  24                         $sessionData
  25                 );
  26         }
  27
  28         public function initialize( $name, $sessionKey, $sessionData ) {
  29                         /**
  30                          * Confirming a temporarily stashed upload.
  31                          * We don't want path names to be forged, so we keep
  32                          * them in the session on the server and just give
  33                          * an opaque key to the user agent.
  34                          */
  35
  36                         $this->initializePathInfo( $name,
  37                                 $this->getRealPath ( $sessionData['mTempPath'] ),
  38                                 $sessionData['mFileSize'],
  39                                 false
  40                         );
  41
  42                         $this->mSessionKey = $sessionKey;
  43                         $this->mVirtualTempPath = $sessionData['mTempPath'];
  44                         $this->mFileProps = $sessionData['mFileProps'];
  45         }
  46
  47         public function initializeFromRequest( &$request ) {
  48                 $sessionKey = $request->getInt( 'wpSessionKey' );
  49                 $sessionData = $request->getSessionData('wsUploadData');
  50
  51                 $desiredDestName = $request->getText( 'wpDestFile' );
  52                 if( !$desiredDestName )
  53                         $desiredDestName = $request->getText( 'wpUploadFile' );
  54                 return $this->initialize( $desiredDestName, $sessionKey, $sessionData[$sessionKey] );
  55         }
  56
  57         /**
  58          * File has been previously verified so no need to do so again.
  59          */
  60         protected function verifyFile() {
  61                 return true;
  62         }
  63
  64
  65         /**
  66          * There is no need to stash the image twice
  67          */
  68         public function stashSession() {
  69                 if ( !empty( $this->mSessionKey ) )
  70                         return $this->mSessionKey;
  71                 return parent::stashSession();
  72         }
  73
  74         /**
  75          * Remove a temporarily kept file stashed by saveTempUploadedFile().
  76          * @return success
  77          */
  78         public function unsaveUploadedFile() {
  79                 $repo = RepoGroup::singleton()->getLocalRepo();
  80                 $success = $repo->freeTemp( $this->mVirtualTempPath );
  81                 return $success;
  82         }
  83
  84 }