includes/upload/UploadFromStash.php

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