includes/SpecialUploadMogile.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * You will need the extension MogileClient to use this special page.
   9  */
  10 require_once( 'MogileFS.php' );
  11
  12 /**
  13  * Entry point
  14  */
  15 function wfSpecialUploadMogile() {
  16         global $wgRequest;
  17         $form = new UploadFormMogile( $wgRequest );
  18         $form->execute();
  19 }
  20
  21 /**
  22  * Extends Special:Upload with MogileFS.
  23  * @ingroup SpecialPage
  24  */
  25 class UploadFormMogile extends UploadForm {
  26         /**
  27          * Move the uploaded file from its temporary location to the final
  28          * destination. If a previous version of the file exists, move
  29          * it into the archive subdirectory.
  30          *
  31          * @todo If the later save fails, we may have disappeared the original file.
  32          *
  33          * @param string $saveName
  34          * @param string $tempName full path to the temporary file
  35          * @param bool $useRename  Not used in this implementation
  36          */
  37         function saveUploadedFile( $saveName, $tempName, $useRename = false ) {
  38                 global $wgOut;
  39                 $mfs = MogileFS::NewMogileFS();
  40
  41                 $this->mSavedFile = "image!{$saveName}";
  42
  43                 if( $mfs->getPaths( $this->mSavedFile )) {
  44                         $this->mUploadOldVersion = gmdate( 'YmdHis' ) . "!{$saveName}";
  45                         if( !$mfs->rename( $this->mSavedFile, "archive!{$this->mUploadOldVersion}" ) ) {
  46                                 $wgOut->showFileRenameError( $this->mSavedFile,
  47                                   "archive!{$this->mUploadOldVersion}" );
  48                                 return false;
  49                         }
  50                 } else {
  51                         $this->mUploadOldVersion = '';
  52                 }
  53
  54                 if ( $this->mStashed ) {
  55                         if (!$mfs->rename($tempName,$this->mSavedFile)) {
  56                                 $wgOut->showFileRenameError($tempName, $this->mSavedFile );
  57                                 return false;
  58                         }
  59                 } else {
  60                         if ( !$mfs->saveFile($this->mSavedFile,'normal',$tempName )) {
  61                                 $wgOut->showFileCopyError( $tempName, $this->mSavedFile );
  62                                 return false;
  63                         }
  64                         unlink($tempName);
  65                 }
  66                 return true;
  67         }
  68
  69         /**
  70          * Stash a file in a temporary directory for later processing
  71          * after the user has confirmed it.
  72          *
  73          * If the user doesn't explicitly cancel or accept, these files
  74          * can accumulate in the temp directory.
  75          *
  76          * @param string $saveName - the destination filename
  77          * @param string $tempName - the source temporary file to save
  78          * @return string - full path the stashed file, or false on failure
  79          * @access private
  80          */
  81         function saveTempUploadedFile( $saveName, $tempName ) {
  82                 global $wgOut;
  83
  84                 $stash = 'stash!' . gmdate( "YmdHis" ) . '!' . $saveName;
  85                 $mfs = MogileFS::NewMogileFS();
  86                 if ( !$mfs->saveFile( $stash, 'normal', $tempName ) ) {
  87                         $wgOut->showFileCopyError( $tempName, $stash );
  88                         return false;
  89                 }
  90                 unlink($tempName);
  91                 return $stash;
  92         }
  93
  94         /**
  95          * Stash a file in a temporary directory for later processing,
  96          * and save the necessary descriptive info into the session.
  97          * Returns a key value which will be passed through a form
  98          * to pick up the path info on a later invocation.
  99          *
 100          * @return int
 101          * @access private
 102          */
 103         function stashSession() {
 104                 $stash = $this->saveTempUploadedFile(
 105                         $this->mUploadSaveName, $this->mUploadTempName );
 106
 107                 if( !$stash ) {
 108                         # Couldn't save the file.
 109                         return false;
 110                 }
 111
 112                 $key = mt_rand( 0, 0x7fffffff );
 113                 $_SESSION['wsUploadData'][$key] = array(
 114                         'mUploadTempName' => $stash,
 115                         'mUploadSize'     => $this->mUploadSize,
 116                         'mOname'          => $this->mOname );
 117                 return $key;
 118         }
 119
 120         /**
 121          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 122          * @access private
 123          * @return success
 124          */
 125         function unsaveUploadedFile() {
 126                 global $wgOut;
 127                 $mfs = MogileFS::NewMogileFS();
 128                 if ( ! $mfs->delete( $this->mUploadTempName ) ) {
 129                         $wgOut->showFileDeleteError( $this->mUploadTempName );
 130                         return false;
 131                 } else {
 132                         return true;
 133                 }
 134         }
 135 }