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          * some $na vars for uploadBase method compatibility.
  29          */
  30         public function initialize( $name, $sessionData, $na, $na2=false ) {
  31                         /**
  32                          * Confirming a temporarily stashed upload.
  33                          * We don't want path names to be forged, so we keep
  34                          * them in the session on the server and just give
  35                          * an opaque key to the user agent.
  36                          */
  37
  38                         parent::initialize( $name,
  39                                 $this->getRealPath ( $sessionData['mTempPath'] ),
  40                                 $sessionData['mFileSize'],
  41                                 false
  42                         );
  43
  44                         $this->mVirtualTempPath = $sessionData['mTempPath'];
  45                         $this->mFileProps = $sessionData['mFileProps'];
  46         }
  47
  48         public function initializeFromRequest( &$request ) {
  49                 $this->mSessionKey = $request->getInt( 'wpSessionKey' );
  50                 $sessionData = $request->getSessionData('wsUploadData');
  51
  52                 $desiredDestName = $request->getText( 'wpDestFile' );
  53                 if( !$desiredDestName )
  54                         $desiredDestName = $request->getText( 'wpUploadFile' );
  55                 return $this->initialize( $desiredDestName, $sessionData[$this->mSessionKey], false );
  56         }
  57
  58         /**
  59          * File has been previously verified so no need to do so again.
  60          */
  61         protected function verifyFile() {
  62                 return true;
  63         }
  64
  65
  66         /**
  67          * There is no need to stash the image twice
  68          */
  69         public function stashSession() {
  70                 if ( !empty( $this->mSessionKey ) )
  71                         return $this->mSessionKey;
  72                 return parent::stashSession();
  73         }
  74
  75         /**
  76          * Remove a temporarily kept file stashed by saveTempUploadedFile().
  77          * @return success
  78          */
  79         public function unsaveUploadedFile() {
  80                 $repo = RepoGroup::singleton()->getLocalRepo();
  81                 $success = $repo->freeTemp( $this->mVirtualTempPath );
  82                 return $success;
  83         }
  84
  85 }