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                 $this->mSourceType = isset( $sessionData['mSourceType'] ) ?
  45                         $sessionData['mSourceType'] : null;
  46         }
  47
  48         public function initializeFromRequest( &$request ) {
  49                 $sessionKey = $request->getText( 'wpSessionKey' );
  50                 $sessionData = $request->getSessionData( UploadBase::SESSION_KEYNAME );
  51
  52                 $desiredDestName = $request->getText( 'wpDestFile' );
  53                 if( !$desiredDestName )
  54                         $desiredDestName = $request->getText( 'wpUploadFile' );
  55                 return $this->initialize( $desiredDestName, $sessionKey, $sessionData[$sessionKey] );
  56         }
  57
  58         public function getSourceType() {
  59                 return $this->mSourceType;
  60         }
  61
  62         /**
  63          * File has been previously verified so no need to do so again.
  64          */
  65         protected function verifyFile() {
  66                 return true;
  67         }
  68
  69
  70         /**
  71          * There is no need to stash the image twice
  72          */
  73         public function stashSession( $key = null ) {
  74                 if ( !empty( $this->mSessionKey ) )
  75                         return $this->mSessionKey;
  76                 return parent::stashSession();
  77         }
  78
  79         /**
  80          * Remove a temporarily kept file stashed by saveTempUploadedFile().
  81          * @return success
  82          */
  83         public function unsaveUploadedFile() {
  84                 $repo = RepoGroup::singleton()->getLocalRepo();
  85                 $success = $repo->freeTemp( $this->mVirtualTempPath );
  86                 return $success;
  87         }
  88
  89 }