includes/SpecialUpload.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7
   8 /**
   9  * Entry point
  10  */
  11 function wfSpecialUpload() {
  12         global $wgRequest;
  13         $form = new UploadForm( $wgRequest );
  14         $form->execute();
  15 }
  16
  17 /**
  18  * implements Special:Upload
  19  * @ingroup SpecialPage
  20  */
  21 class UploadForm {
  22         const SUCCESS = 0;
  23         const BEFORE_PROCESSING = 1;
  24         const LARGE_FILE_SERVER = 2;
  25         const EMPTY_FILE = 3;
  26         const MIN_LENGHT_PARTNAME = 4;
  27         const ILLEGAL_FILENAME = 5;
  28         const PROTECTED_PAGE = 6;
  29         const OVERWRITE_EXISTING_FILE = 7;
  30         const FILETYPE_MISSING = 8;
  31         const FILETYPE_BADTYPE = 9;
  32         const VERIFICATION_ERROR = 10;
  33         const UPLOAD_VERIFICATION_ERROR = 11;
  34         const UPLOAD_WARNING = 12;
  35         const INTERNAL_ERROR = 13;
  36
  37         /**#@+
  38          * @access private
  39          */
  40         var $mComment, $mLicense, $mIgnoreWarning, $mCurlError;
  41         var $mDestName, $mTempPath, $mFileSize, $mFileProps;
  42         var $mCopyrightStatus, $mCopyrightSource, $mReUpload, $mAction, $mUploadClicked;
  43         var $mSrcName, $mSessionKey, $mStashed, $mDesiredDestName, $mRemoveTempFile, $mSourceType;
  44         var $mDestWarningAck, $mCurlDestHandle;
  45         var $mLocalFile;
  46
  47         # Placeholders for text injection by hooks (must be HTML)
  48         # extensions should take care to _append_ to the present value
  49         var $uploadFormTextTop;
  50         var $uploadFormTextAfterSummary;
  51
  52         const SESSION_VERSION = 1;
  53         /**#@-*/
  54
  55         /**
  56          * Constructor : initialise object
  57          * Get data POSTed through the form and assign them to the object
  58          * @param $request Data posted.
  59          */
  60         function UploadForm( &$request ) {
  61                 global $wgAllowCopyUploads;
  62                 $this->mDesiredDestName   = $request->getText( 'wpDestFile' );
  63                 $this->mIgnoreWarning     = $request->getCheck( 'wpIgnoreWarning' );
  64                 $this->mComment           = $request->getText( 'wpUploadDescription' );
  65
  66                 if( !$request->wasPosted() ) {
  67                         # GET requests just give the main form; no data except destination
  68                         # filename and description
  69                         return;
  70                 }
  71
  72                 # Placeholders for text injection by hooks (empty per default)
  73                 $this->uploadFormTextTop = "";
  74                 $this->uploadFormTextAfterSummary = "";
  75
  76                 $this->mReUpload          = $request->getCheck( 'wpReUpload' );
  77                 $this->mUploadClicked     = $request->getCheck( 'wpUpload' );
  78
  79                 $this->mLicense           = $request->getText( 'wpLicense' );
  80                 $this->mCopyrightStatus   = $request->getText( 'wpUploadCopyStatus' );
  81                 $this->mCopyrightSource   = $request->getText( 'wpUploadSource' );
  82                 $this->mWatchthis         = $request->getBool( 'wpWatchthis' );
  83                 $this->mSourceType        = $request->getText( 'wpSourceType' );
  84                 $this->mDestWarningAck    = $request->getText( 'wpDestFileWarningAck' );
  85
  86                 $this->mAction            = $request->getVal( 'action' );
  87
  88                 $this->mSessionKey        = $request->getInt( 'wpSessionKey' );
  89                 if( !empty( $this->mSessionKey ) &&
  90                         isset( $_SESSION['wsUploadData'][$this->mSessionKey]['version'] ) &&
  91                         $_SESSION['wsUploadData'][$this->mSessionKey]['version'] == self::SESSION_VERSION ) {
  92                         /**
  93                          * Confirming a temporarily stashed upload.
  94                          * We don't want path names to be forged, so we keep
  95                          * them in the session on the server and just give
  96                          * an opaque key to the user agent.
  97                          */
  98                         $data = $_SESSION['wsUploadData'][$this->mSessionKey];
  99                         $this->mTempPath         = $data['mTempPath'];
 100                         $this->mFileSize         = $data['mFileSize'];
 101                         $this->mSrcName          = $data['mSrcName'];
 102                         $this->mFileProps        = $data['mFileProps'];
 103                         $this->mCurlError        = 0/*UPLOAD_ERR_OK*/;
 104                         $this->mStashed          = true;
 105                         $this->mRemoveTempFile   = false;
 106                 } else {
 107                         /**
 108                          *Check for a newly uploaded file.
 109                          */
 110                         if( $wgAllowCopyUploads && $this->mSourceType == 'web' ) {
 111                                 $this->initializeFromUrl( $request );
 112                         } else {
 113                                 $this->initializeFromUpload( $request );
 114                         }
 115                 }
 116         }
 117
 118         /**
 119          * Initialize the uploaded file from PHP data
 120          * @access private
 121          */
 122         function initializeFromUpload( $request ) {
 123                 $this->mTempPath       = $request->getFileTempName( 'wpUploadFile' );
 124                 $this->mFileSize       = $request->getFileSize( 'wpUploadFile' );
 125                 $this->mSrcName        = $request->getFileName( 'wpUploadFile' );
 126                 $this->mCurlError      = $request->getUploadError( 'wpUploadFile' );
 127                 $this->mSessionKey     = false;
 128                 $this->mStashed        = false;
 129                 $this->mRemoveTempFile = false; // PHP will handle this
 130         }
 131
 132         /**
 133          * Copy a web file to a temporary file
 134          * @access private
 135          */
 136         function initializeFromUrl( $request ) {
 137                 global $wgTmpDirectory;
 138                 $url = $request->getText( 'wpUploadFileURL' );
 139                 $local_file = tempnam( $wgTmpDirectory, 'WEBUPLOAD' );
 140
 141                 $this->mTempPath       = $local_file;
 142                 $this->mFileSize       = 0; # Will be set by curlCopy
 143                 $this->mCurlError      = $this->curlCopy( $url, $local_file );
 144                 $pathParts             = explode( '/', $url );
 145                 $this->mSrcName        = array_pop( $pathParts );
 146                 $this->mSessionKey     = false;
 147                 $this->mStashed        = false;
 148
 149                 // PHP won't auto-cleanup the file
 150                 $this->mRemoveTempFile = file_exists( $local_file );
 151         }
 152
 153         /**
 154          * Safe copy from URL
 155          * Returns true if there was an error, false otherwise
 156          */
 157         private function curlCopy( $url, $dest ) {
 158                 global $wgUser, $wgOut;
 159
 160                 if( !$wgUser->isAllowed( 'upload_by_url' ) ) {
 161                         $wgOut->permissionRequired( 'upload_by_url' );
 162                         return true;
 163                 }
 164
 165                 # Maybe remove some pasting blanks :-)
 166                 $url =  trim( $url );
 167                 if( stripos($url, 'http://') !== 0 && stripos($url, 'ftp://') !== 0 ) {
 168                         # Only HTTP or FTP URLs
 169                         $wgOut->showErrorPage( 'upload-proto-error', 'upload-proto-error-text' );
 170                         return true;
 171                 }
 172
 173                 # Open temporary file
 174                 $this->mCurlDestHandle = @fopen( $this->mTempPath, "wb" );
 175                 if( $this->mCurlDestHandle === false ) {
 176                         # Could not open temporary file to write in
 177                         $wgOut->showErrorPage( 'upload-file-error', 'upload-file-error-text');
 178                         return true;
 179                 }
 180
 181                 $ch = curl_init();
 182                 curl_setopt( $ch, CURLOPT_HTTP_VERSION, 1.0); # Probably not needed, but apparently can work around some bug
 183                 curl_setopt( $ch, CURLOPT_TIMEOUT, 10); # 10 seconds timeout
 184                 curl_setopt( $ch, CURLOPT_LOW_SPEED_LIMIT, 512); # 0.5KB per second minimum transfer speed
 185                 curl_setopt( $ch, CURLOPT_URL, $url);
 186                 curl_setopt( $ch, CURLOPT_WRITEFUNCTION, array( $this, 'uploadCurlCallback' ) );
 187                 curl_exec( $ch );
 188                 $error = curl_errno( $ch ) ? true : false;
 189                 $errornum =  curl_errno( $ch );
 190                 // if ( $error ) print curl_error ( $ch ) ; # Debugging output
 191                 curl_close( $ch );
 192
 193                 fclose( $this->mCurlDestHandle );
 194                 unset( $this->mCurlDestHandle );
 195                 if( $error ) {
 196                         unlink( $dest );
 197                         if( wfEmptyMsg( "upload-curl-error$errornum", wfMsg("upload-curl-error$errornum") ) )
 198                                 $wgOut->showErrorPage( 'upload-misc-error', 'upload-misc-error-text' );
 199                         else
 200                                 $wgOut->showErrorPage( "upload-curl-error$errornum", "upload-curl-error$errornum-text" );
 201                 }
 202
 203                 return $error;
 204         }
 205
 206         /**
 207          * Callback function for CURL-based web transfer
 208          * Write data to file unless we've passed the length limit;
 209          * if so, abort immediately.
 210          * @access private
 211          */
 212         function uploadCurlCallback( $ch, $data ) {
 213                 global $wgMaxUploadSize;
 214                 $length = strlen( $data );
 215                 $this->mFileSize += $length;
 216                 if( $this->mFileSize > $wgMaxUploadSize ) {
 217                         return 0;
 218                 }
 219                 fwrite( $this->mCurlDestHandle, $data );
 220                 return $length;
 221         }
 222
 223         /**
 224          * Start doing stuff
 225          * @access public
 226          */
 227         function execute() {
 228                 global $wgUser, $wgOut;
 229                 global $wgEnableUploads;
 230
 231                 # Check uploading enabled
 232                 if( !$wgEnableUploads ) {
 233                         $wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext', array( $this->mDesiredDestName ) );
 234                         return;
 235                 }
 236
 237                 # Check permissions
 238                 if( !$wgUser->isAllowed( 'upload' ) ) {
 239                         if( !$wgUser->isLoggedIn() ) {
 240                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 241                         } else {
 242                                 $wgOut->permissionRequired( 'upload' );
 243                         }
 244                         return;
 245                 }
 246
 247                 # Check blocks
 248                 if( $wgUser->isBlocked() ) {
 249                         $wgOut->blockedPage();
 250                         return;
 251                 }
 252
 253                 if( wfReadOnly() ) {
 254                         $wgOut->readOnlyPage();
 255                         return;
 256                 }
 257
 258                 if( $this->mReUpload ) {
 259                         if( !$this->unsaveUploadedFile() ) {
 260                                 return;
 261                         }
 262                         $this->mainUploadForm();
 263                 } else if( 'submit' == $this->mAction || $this->mUploadClicked ) {
 264                         $this->processUpload();
 265                 } else {
 266                         $this->mainUploadForm();
 267                 }
 268
 269                 $this->cleanupTempFile();
 270         }
 271
 272         /**
 273          * Do the upload
 274          * Checks are made in SpecialUpload::execute()
 275          *
 276          * @access private
 277          */
 278         function processUpload(){
 279                 global $wgUser, $wgOut, $wgFileExtensions;
 280                 $details = null;
 281                 $value = null;
 282                 $value = $this->internalProcessUpload( $details );
 283
 284                 switch($value) {
 285                         case self::SUCCESS:
 286                                 $wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
 287                                 break;
 288
 289                         case self::BEFORE_PROCESSING:
 290                                 break;
 291
 292                         case self::LARGE_FILE_SERVER:
 293                                 $this->mainUploadForm( wfMsgHtml( 'largefileserver' ) );
 294                                 break;
 295
 296                         case self::EMPTY_FILE:
 297                                 $this->mainUploadForm( wfMsgHtml( 'emptyfile' ) );
 298                                 break;
 299
 300                         case self::MIN_LENGHT_PARTNAME:
 301                                 $this->mainUploadForm( wfMsgHtml( 'minlength1' ) );
 302                                 break;
 303
 304                         case self::ILLEGAL_FILENAME:
 305                                 $filtered = $details['filtered'];
 306                                 $this->uploadError( wfMsgWikiHtml( 'illegalfilename', htmlspecialchars( $filtered ) ) );
 307                                 break;
 308
 309                         case self::PROTECTED_PAGE:
 310                                 $this->uploadError( wfMsgWikiHtml( 'protectedpage' ) );
 311                                 break;
 312
 313                         case self::OVERWRITE_EXISTING_FILE:
 314                                 $errorText = $details['overwrite'];
 315                                 $overwrite = new WikiError( $wgOut->parse( $errorText ) );
 316                                 $this->uploadError( $overwrite->toString() );
 317                                 break;
 318
 319                         case self::FILETYPE_MISSING:
 320                                 $this->uploadError( wfMsgExt( 'filetype-missing', array ( 'parseinline' ) ) );
 321                                 break;
 322
 323                         case self::FILETYPE_BADTYPE:
 324                                 $finalExt = $details['finalExt'];
 325                                 $this->uploadError(
 326                                         wfMsgExt( 'filetype-banned-type',
 327                                                 array( 'parseinline' ),
 328                                                 htmlspecialchars( $finalExt ),
 329                                                 implode(
 330                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 331                                                         $wgFileExtensions
 332                                                 )
 333                                         )
 334                                 );
 335                                 break;
 336
 337                         case self::VERIFICATION_ERROR:
 338                                 $veri = $details['veri'];
 339                                 $this->uploadError( $veri->toString() );
 340                                 break;
 341
 342                         case self::UPLOAD_VERIFICATION_ERROR:
 343                                 $error = $details['error'];
 344                                 $this->uploadError( $error );
 345                                 break;
 346
 347                         case self::UPLOAD_WARNING:
 348                                 $warning = $details['warning'];
 349                                 $this->uploadWarning( $warning );
 350                                 break;
 351
 352                         case self::INTERNAL_ERROR:
 353                                 $internal = $details['internal'];
 354                                 $this->showError( $internal );
 355                                 break;
 356
 357                         default:
 358                                 throw new MWException( __METHOD__ . ": Unknown value `{$value}`" );
 359                 }
 360         }
 361
 362         /**
 363          * Really do the upload
 364          * Checks are made in SpecialUpload::execute()
 365          *
 366          * @param array $resultDetails contains result-specific dict of additional values
 367          *
 368          * @access private
 369          */
 370         function internalProcessUpload( &$resultDetails ) {
 371                 global $wgUser;
 372
 373                 if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) )
 374                 {
 375                         wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file." );
 376                         return self::BEFORE_PROCESSING;
 377                 }
 378
 379                 /**
 380                  * If there was no filename or a zero size given, give up quick.
 381                  */
 382                 if( trim( $this->mSrcName ) == '' || empty( $this->mFileSize ) ) {
 383                         return self::EMPTY_FILE;
 384                 }
 385
 386                 /* Check for curl error */
 387                 if( $this->mCurlError ) {
 388                         return self::BEFORE_PROCESSING;
 389                 }
 390
 391                 # Chop off any directories in the given filename
 392                 if( $this->mDesiredDestName ) {
 393                         $basename = $this->mDesiredDestName;
 394                 } else {
 395                         $basename = $this->mSrcName;
 396                 }
 397                 $filtered = wfBaseName( $basename );
 398
 399                 /**
 400                  * We'll want to blacklist against *any* 'extension', and use
 401                  * only the final one for the whitelist.
 402                  */
 403                 list( $partname, $ext ) = $this->splitExtensions( $filtered );
 404
 405                 if( count( $ext ) ) {
 406                         $finalExt = $ext[count( $ext ) - 1];
 407                 } else {
 408                         $finalExt = '';
 409                 }
 410
 411                 # If there was more than one "extension", reassemble the base
 412                 # filename to prevent bogus complaints about length
 413                 if( count( $ext ) > 1 ) {
 414                         for( $i = 0; $i < count( $ext ) - 1; $i++ )
 415                                 $partname .= '.' . $ext[$i];
 416                 }
 417
 418                 if( strlen( $partname ) < 1 ) {
 419                         return self::MIN_LENGHT_PARTNAME;
 420                 }
 421
 422                 /**
 423                  * Filter out illegal characters, and try to make a legible name
 424                  * out of it. We'll strip some silently that Title would die on.
 425                  */
 426                 $filtered = preg_replace ( "/[^".Title::legalChars()."]|:/", '-', $filtered );
 427                 $nt = Title::makeTitleSafe( NS_IMAGE, $filtered );
 428                 if( is_null( $nt ) ) {
 429                         $resultDetails = array( 'filtered' => $filtered );
 430                         return self::ILLEGAL_FILENAME;
 431                 }
 432                 $this->mLocalFile = wfLocalFile( $nt );
 433                 $this->mDestName = $this->mLocalFile->getName();
 434
 435                 /**
 436                  * If the image is protected, non-sysop users won't be able
 437                  * to modify it by uploading a new revision.
 438                  */
 439                 if( !$nt->userCan( 'edit' ) ||
 440                                 !$nt->userCan( 'create' ) ||
 441                                 !$nt->userCan( 'upload' ) ){
 442                         return self::PROTECTED_PAGE;
 443                 }
 444
 445                 /**
 446                  * In some cases we may forbid overwriting of existing files.
 447                  */
 448                 $overwrite = $this->checkOverwrite( $this->mDestName );
 449                 if( $overwrite !== true ) {
 450                         $resultDetails = array( 'overwrite' => $overwrite );
 451                         return self::OVERWRITE_EXISTING_FILE;
 452                 }
 453
 454                 /* Don't allow users to override the blacklist (check file extension) */
 455                 global $wgStrictFileExtensions;
 456                 global $wgFileExtensions, $wgFileBlacklist;
 457                 if ($finalExt == '') {
 458                         return self::FILETYPE_MISSING;
 459                 } elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) ||
 460                                 ($wgStrictFileExtensions && !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) {
 461                         $resultDetails = array( 'finalExt' => $finalExt );
 462                         return self::FILETYPE_BADTYPE;
 463                 }
 464
 465                 /**
 466                  * Look at the contents of the file; if we can recognize the
 467                  * type but it's corrupt or data of the wrong type, we should
 468                  * probably not accept it.
 469                  */
 470                 if( !$this->mStashed ) {
 471                         $this->mFileProps = File::getPropsFromPath( $this->mTempPath, $finalExt );
 472                         $this->checkMacBinary();
 473                         $veri = $this->verify( $this->mTempPath, $finalExt );
 474
 475                         if( $veri !== true ) { //it's a wiki error...
 476                                 $resultDetails = array( 'veri' => $veri );
 477                                 return self::VERIFICATION_ERROR;
 478                         }
 479
 480                         /**
 481                          * Provide an opportunity for extensions to add further checks
 482                          */
 483                         $error = '';
 484                         if( !wfRunHooks( 'UploadVerification',
 485                                         array( $this->mDestName, $this->mTempPath, &$error ) ) ) {
 486                                 $resultDetails = array( 'error' => $error );
 487                                 return self::UPLOAD_VERIFICATION_ERROR;
 488                         }
 489                 }
 490
 491
 492                 /**
 493                  * Check for non-fatal conditions
 494                  */
 495                 if ( ! $this->mIgnoreWarning ) {
 496                         $warning = '';
 497
 498                         global $wgCapitalLinks;
 499                         if( $wgCapitalLinks ) {
 500                                 $filtered = ucfirst( $filtered );
 501                         }
 502                         if( $basename != $filtered ) {
 503                                 $warning .=  '<li>'.wfMsgHtml( 'badfilename', htmlspecialchars( $this->mDestName ) ).'</li>';
 504                         }
 505
 506                         global $wgCheckFileExtensions;
 507                         if ( $wgCheckFileExtensions ) {
 508                                 if ( !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) {
 509                                         $warning .= '<li>' .
 510                                         wfMsgExt( 'filetype-unwanted-type',
 511                                                 array( 'parseinline' ),
 512                                                 htmlspecialchars( $finalExt ),
 513                                                 implode(
 514                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 515                                                         $wgFileExtensions
 516                                                 )
 517                                         ) . '</li>';
 518                                 }
 519                         }
 520
 521                         global $wgUploadSizeWarning;
 522                         if ( $wgUploadSizeWarning && ( $this->mFileSize > $wgUploadSizeWarning ) ) {
 523                                 $skin = $wgUser->getSkin();
 524                                 $wsize = $skin->formatSize( $wgUploadSizeWarning );
 525                                 $asize = $skin->formatSize( $this->mFileSize );
 526                                 $warning .= '<li>' . wfMsgHtml( 'large-file', $wsize, $asize ) . '</li>';
 527                         }
 528                         if ( $this->mFileSize == 0 ) {
 529                                 $warning .= '<li>'.wfMsgHtml( 'emptyfile' ).'</li>';
 530                         }
 531
 532                         if ( !$this->mDestWarningAck ) {
 533                                 $warning .= self::getExistsWarning( $this->mLocalFile );
 534                         }
 535                         if( $warning != '' ) {
 536                                 /**
 537                                  * Stash the file in a temporary location; the user can choose
 538                                  * to let it through and we'll complete the upload then.
 539                                  */
 540                                 $resultDetails = array( 'warning' => $warning );
 541                                 return self::UPLOAD_WARNING;
 542                         }
 543                 }
 544
 545                 /**
 546                  * Try actually saving the thing...
 547                  * It will show an error form on failure.
 548                  */
 549                 $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 550                         $this->mCopyrightStatus, $this->mCopyrightSource );
 551
 552                 $status = $this->mLocalFile->upload( $this->mTempPath, $this->mComment, $pageText,
 553                         File::DELETE_SOURCE, $this->mFileProps );
 554                 if ( !$status->isGood() ) {
 555                         $resultDetails = array( 'internal' => $status->getWikiText() );
 556                         return self::INTERNAL_ERROR;
 557                 } else {
 558                         if ( $this->mWatchthis ) {
 559                                 global $wgUser;
 560                                 $wgUser->addWatch( $this->mLocalFile->getTitle() );
 561                         }
 562                         // Success, redirect to description page
 563                         $img = null; // @todo: added to avoid passing a ref to null - should this be defined somewhere?
 564                         wfRunHooks( 'UploadComplete', array( &$this ) );
 565                         return self::SUCCESS;
 566                 }
 567         }
 568
 569         /**
 570          * Do existence checks on a file and produce a warning
 571          * This check is static and can be done pre-upload via AJAX
 572          * Returns an HTML fragment consisting of one or more LI elements if there is a warning
 573          * Returns an empty string if there is no warning
 574          */
 575         static function getExistsWarning( $file ) {
 576                 global $wgUser, $wgContLang;
 577                 // Check for uppercase extension. We allow these filenames but check if an image
 578                 // with lowercase extension exists already
 579                 $warning = '';
 580                 $align = $wgContLang->isRtl() ? 'left' : 'right';
 581
 582                 if( strpos( $file->getName(), '.' ) == false ) {
 583                         $partname = $file->getName();
 584                         $rawExtension = '';
 585                 } else {
 586                         $n = strrpos( $file->getName(), '.' );
 587                         $rawExtension = substr( $file->getName(), $n + 1 );
 588                         $partname = substr( $file->getName(), 0, $n );
 589                 }
 590
 591                 $sk = $wgUser->getSkin();
 592
 593                 if ( $rawExtension != $file->getExtension() ) {
 594                         // We're not using the normalized form of the extension.
 595                         // Normal form is lowercase, using most common of alternate
 596                         // extensions (eg 'jpg' rather than 'JPEG').
 597                         //
 598                         // Check for another file using the normalized form...
 599                         $nt_lc = Title::makeTitle( NS_IMAGE, $partname . '.' . $file->getExtension() );
 600                         $file_lc = wfLocalFile( $nt_lc );
 601                 } else {
 602                         $file_lc = false;
 603                 }
 604
 605                 if( $file->exists() ) {
 606                         $dlink = $sk->makeKnownLinkObj( $file->getTitle() );
 607                         if ( $file->allowInlineDisplay() ) {
 608                                 $dlink2 = $sk->makeImageLinkObj( $file->getTitle(), wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 609                                         $file->getName(), $align, array(), false, true );
 610                         } elseif ( !$file->allowInlineDisplay() && $file->isSafeFile() ) {
 611                                 $icon = $file->iconThumb();
 612                                 $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 613                                         $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
 614                         } else {
 615                                 $dlink2 = '';
 616                         }
 617
 618                         $warning .= '<li>' . wfMsgExt( 'fileexists', array('parseinline','replaceafter'), $dlink ) . '</li>' . $dlink2;
 619
 620                 } elseif( $file->getTitle()->getArticleID() ) {
 621                         $lnk = $sk->makeKnownLinkObj( $file->getTitle(), '', 'redirect=no' );
 622                         $warning .= '<li>' . wfMsgExt( 'filepageexists', array( 'parseinline', 'replaceafter' ), $lnk ) . '</li>';
 623                 } elseif ( $file_lc && $file_lc->exists() ) {
 624                         # Check if image with lowercase extension exists.
 625                         # It's not forbidden but in 99% it makes no sense to upload the same filename with uppercase extension
 626                         $dlink = $sk->makeKnownLinkObj( $nt_lc );
 627                         if ( $file_lc->allowInlineDisplay() ) {
 628                                 $dlink2 = $sk->makeImageLinkObj( $nt_lc, wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 629                                         $nt_lc->getText(), $align, array(), false, true );
 630                         } elseif ( !$file_lc->allowInlineDisplay() && $file_lc->isSafeFile() ) {
 631                                 $icon = $file_lc->iconThumb();
 632                                 $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 633                                         $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
 634                         } else {
 635                                 $dlink2 = '';
 636                         }
 637
 638                         $warning .= '<li>' .
 639                                 wfMsgExt( 'fileexists-extension', 'parsemag',
 640                                         $file->getTitle()->getPrefixedText(), $dlink ) .
 641                                 '</li>' . $dlink2;
 642
 643                 } elseif ( ( substr( $partname , 3, 3 ) == 'px-' || substr( $partname , 2, 3 ) == 'px-' )
 644                         && ereg( "[0-9]{2}" , substr( $partname , 0, 2) ) )
 645                 {
 646                         # Check for filenames like 50px- or 180px-, these are mostly thumbnails
 647                         $nt_thb = Title::newFromText( substr( $partname , strpos( $partname , '-' ) +1 ) . '.' . $rawExtension );
 648                         $file_thb = wfLocalFile( $nt_thb );
 649                         if ($file_thb->exists() ) {
 650                                 # Check if an image without leading '180px-' (or similiar) exists
 651                                 $dlink = $sk->makeKnownLinkObj( $nt_thb);
 652                                 if ( $file_thb->allowInlineDisplay() ) {
 653                                         $dlink2 = $sk->makeImageLinkObj( $nt_thb,
 654                                                 wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 655                                                 $nt_thb->getText(), $align, array(), false, true );
 656                                 } elseif ( !$file_thb->allowInlineDisplay() && $file_thb->isSafeFile() ) {
 657                                         $icon = $file_thb->iconThumb();
 658                                         $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 659                                                 $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' .
 660                                                 $dlink . '</div>';
 661                                 } else {
 662                                         $dlink2 = '';
 663                                 }
 664
 665                                 $warning .= '<li>' . wfMsgExt( 'fileexists-thumbnail-yes', 'parsemag', $dlink ) .
 666                                         '</li>' . $dlink2;
 667                         } else {
 668                                 # Image w/o '180px-' does not exists, but we do not like these filenames
 669                                 $warning .= '<li>' . wfMsgExt( 'file-thumbnail-no', 'parseinline' ,
 670                                         substr( $partname , 0, strpos( $partname , '-' ) +1 ) ) . '</li>';
 671                         }
 672                 }
 673
 674                 $filenamePrefixBlacklist = self::getFilenamePrefixBlacklist();
 675                 # Do the match
 676                 foreach( $filenamePrefixBlacklist as $prefix ) {
 677                         if ( substr( $partname, 0, strlen( $prefix ) ) == $prefix ) {
 678                                 $warning .= '<li>' . wfMsgExt( 'filename-bad-prefix', 'parseinline', $prefix ) . '</li>';
 679                                 break;
 680                         }
 681                 }
 682
 683                 if ( $file->wasDeleted() && !$file->exists() ) {
 684                         # If the file existed before and was deleted, warn the user of this
 685                         # Don't bother doing so if the file exists now, however
 686                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 687                         $llink = $sk->makeKnownLinkObj( $ltitle, wfMsgHtml( 'deletionlog' ),
 688                                 'type=delete&page=' . $file->getTitle()->getPrefixedUrl() );
 689                         $warning .= '<li>' . wfMsgWikiHtml( 'filewasdeleted', $llink ) . '</li>';
 690                 }
 691                 return $warning;
 692         }
 693
 694         /**
 695          * Get a list of warnings
 696          *
 697          * @param string local filename, e.g. 'file exists', 'non-descriptive filename'
 698          * @return array list of warning messages
 699          */
 700         static function ajaxGetExistsWarning( $filename ) {
 701                 $file = wfFindFile( $filename );
 702                 if( !$file ) {
 703                         // Force local file so we have an object to do further checks against
 704                         // if there isn't an exact match...
 705                         $file = wfLocalFile( $filename );
 706                 }
 707                 $s = '&nbsp;';
 708                 if ( $file ) {
 709                         $warning = self::getExistsWarning( $file );
 710                         if ( $warning !== '' ) {
 711                                 $s = "<ul>$warning</ul>";
 712                         }
 713                 }
 714                 return $s;
 715         }
 716
 717         /**
 718          * Render a preview of a given license for the AJAX preview on upload
 719          *
 720          * @param string $license
 721          * @return string
 722          */
 723         public static function ajaxGetLicensePreview( $license ) {
 724                 global $wgParser, $wgUser;
 725                 $text = '{{' . $license . '}}';
 726                 $title = Title::makeTitle( NS_IMAGE, 'Sample.jpg' );
 727                 $options = ParserOptions::newFromUser( $wgUser );
 728
 729                 // Expand subst: first, then live templates...
 730                 $text = $wgParser->preSaveTransform( $text, $title, $wgUser, $options );
 731                 $output = $wgParser->parse( $text, $title, $options );
 732
 733                 return $output->getText();
 734         }
 735
 736         /**
 737          * Get a list of blacklisted filename prefixes from [[MediaWiki:filename-prefix-blacklist]]
 738          *
 739          * @return array list of prefixes
 740          */
 741         public static function getFilenamePrefixBlacklist() {
 742                 $blacklist = array();
 743                 $message = wfMsgForContent( 'filename-prefix-blacklist' );
 744                 if( $message && !( wfEmptyMsg( 'filename-prefix-blacklist', $message ) || $message == '-' ) ) {
 745                         $lines = explode( "\n", $message );
 746                         foreach( $lines as $line ) {
 747                                 // Remove comment lines
 748                                 $comment = substr( trim( $line ), 0, 1 );
 749                                 if ( $comment == '#' || $comment == '' ) {
 750                                         continue;
 751                                 }
 752                                 // Remove additional comments after a prefix
 753                                 $comment = strpos( $line, '#' );
 754                                 if ( $comment > 0 ) {
 755                                         $line = substr( $line, 0, $comment-1 );
 756                                 }
 757                                 $blacklist[] = trim( $line );
 758                         }
 759                 }
 760                 return $blacklist;
 761         }
 762
 763         /**
 764          * Stash a file in a temporary directory for later processing
 765          * after the user has confirmed it.
 766          *
 767          * If the user doesn't explicitly cancel or accept, these files
 768          * can accumulate in the temp directory.
 769          *
 770          * @param string $saveName - the destination filename
 771          * @param string $tempName - the source temporary file to save
 772          * @return string - full path the stashed file, or false on failure
 773          * @access private
 774          */
 775         function saveTempUploadedFile( $saveName, $tempName ) {
 776                 global $wgOut;
 777                 $repo = RepoGroup::singleton()->getLocalRepo();
 778                 $status = $repo->storeTemp( $saveName, $tempName );
 779                 if ( !$status->isGood() ) {
 780                         $this->showError( $status->getWikiText() );
 781                         return false;
 782                 } else {
 783                         return $status->value;
 784                 }
 785         }
 786
 787         /**
 788          * Stash a file in a temporary directory for later processing,
 789          * and save the necessary descriptive info into the session.
 790          * Returns a key value which will be passed through a form
 791          * to pick up the path info on a later invocation.
 792          *
 793          * @return int
 794          * @access private
 795          */
 796         function stashSession() {
 797                 $stash = $this->saveTempUploadedFile( $this->mDestName, $this->mTempPath );
 798
 799                 if( !$stash ) {
 800                         # Couldn't save the file.
 801                         return false;
 802                 }
 803
 804                 $key = mt_rand( 0, 0x7fffffff );
 805                 $_SESSION['wsUploadData'][$key] = array(
 806                         'mTempPath'       => $stash,
 807                         'mFileSize'       => $this->mFileSize,
 808                         'mSrcName'        => $this->mSrcName,
 809                         'mFileProps'      => $this->mFileProps,
 810                         'version'         => self::SESSION_VERSION,
 811                 );
 812                 return $key;
 813         }
 814
 815         /**
 816          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 817          * @access private
 818          * @return success
 819          */
 820         function unsaveUploadedFile() {
 821                 global $wgOut;
 822                 $repo = RepoGroup::singleton()->getLocalRepo();
 823                 $success = $repo->freeTemp( $this->mTempPath );
 824                 if ( ! $success ) {
 825                         $wgOut->showFileDeleteError( $this->mTempPath );
 826                         return false;
 827                 } else {
 828                         return true;
 829                 }
 830         }
 831
 832         /* -------------------------------------------------------------- */
 833
 834         /**
 835          * @param string $error as HTML
 836          * @access private
 837          */
 838         function uploadError( $error ) {
 839                 global $wgOut;
 840                 $wgOut->addHTML( Xml::element( 'h2', null, wfMsg( 'uploadwarning' ) . "\n" ) );
 841                 $wgOut->addHTML( Xml::tags( 'span', array( 'class' => 'error' ), $error ) );
 842         }
 843
 844         /**
 845          * There's something wrong with this file, not enough to reject it
 846          * totally but we require manual intervention to save it for real.
 847          * Stash it away, then present a form asking to confirm or cancel.
 848          *
 849          * @param string $warning as HTML
 850          * @access private
 851          */
 852         function uploadWarning( $warning ) {
 853                 global $wgOut;
 854                 global $wgUseCopyrightUpload;
 855
 856                 $this->mSessionKey = $this->stashSession();
 857                 if( !$this->mSessionKey ) {
 858                         # Couldn't save file; an error has been displayed so let's go.
 859                         return;
 860                 }
 861
 862                 $wgOut->addHTML( Xml::element( 'h2', null, wfMsg( 'uploadwarning' ) ) . "\n" );
 863                 $wgOut->addHTML( Xml::tags( 'ul', array( 'class' => 'warning' ), $warning ) . "\n" );
 864
 865                 $titleObj = SpecialPage::getTitleFor( 'Upload' );
 866
 867                 if ( $wgUseCopyrightUpload ) {
 868                         $copyright = Xml::hidden( 'wpUploadCopyStatus', $this->mCopyrightStatus ) . "\n" .
 869                                         Xml::hidden( 'wpUploadSource', $this->mCopyrightSource ) . "\n";
 870                 } else {
 871                         $copyright = '';
 872                 }
 873
 874                 $wgOut->addHTML(
 875                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL( 'action=submit' ),
 876                                  'enctype' => 'multipart/form-data', 'id' => 'uploadwarning' ) ) . "\n" .
 877                         Xml::hidden( 'wpIgnoreWarning', '1' ) . "\n" .
 878                         Xml::hidden( 'wpSessionKey', $this->mSessionKey ) . "\n" .
 879                         Xml::hidden( 'wpUploadDescription', $this->mComment ) . "\n" .
 880                         Xml::hidden( 'wpLicense', $this->mLicense ) . "\n" .
 881                         Xml::hidden( 'wpDestFile', $this->mDesiredDestName ) . "\n" .
 882                         Xml::hidden( 'wpWatchthis', $this->mWatchthis ) . "\n" .
 883                         "{$copyright}<br />" .
 884                         Xml::submitButton( wfMsg( 'ignorewarning' ), array ( 'name' => 'wpUpload', 'id' => 'wpUpload', 'checked' => 'checked' ) ) . ' ' .
 885                         Xml::submitButton( wfMsg( 'reuploaddesc' ), array ( 'name' => 'wpReUpload', 'id' => 'wpReUpload' ) ) .
 886                         Xml::closeElement( 'form' ) . "\n"
 887                 );
 888         }
 889
 890         /**
 891          * Displays the main upload form, optionally with a highlighted
 892          * error message up at the top.
 893          *
 894          * @param string $msg as HTML
 895          * @access private
 896          */
 897         function mainUploadForm( $msg='' ) {
 898                 global $wgOut, $wgUser, $wgLang, $wgMaxUploadSize;
 899                 global $wgUseCopyrightUpload, $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview;
 900                 global $wgRequest, $wgAllowCopyUploads;
 901                 global $wgStylePath, $wgStyleVersion;
 902
 903                 $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
 904                 $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview;
 905
 906                 $adc = wfBoolToStr( $useAjaxDestCheck );
 907                 $alp = wfBoolToStr( $useAjaxLicensePreview );
 908                 $autofill = wfBoolToStr( $this->mDesiredDestName == '' );
 909
 910                 $wgOut->addScript( "<script type=\"text/javascript\">
 911 wgAjaxUploadDestCheck = {$adc};
 912 wgAjaxLicensePreview = {$alp};
 913 wgUploadAutoFill = {$autofill};
 914 </script>" );
 915                 $wgOut->addScriptFile( 'upload.js' );
 916                 $wgOut->addScriptFile( 'edit.js' ); // For <charinsert> support
 917
 918                 if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) )
 919                 {
 920                         wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 921                         return false;
 922                 }
 923
 924                 if( $this->mDesiredDestName ) {
 925                         $title = Title::makeTitleSafe( NS_IMAGE, $this->mDesiredDestName );
 926                         // Show a subtitle link to deleted revisions (to sysops et al only)
 927                         if( $title instanceof Title && ( $count = $title->isDeleted() ) > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) {
 928                                 $link = wfMsgExt(
 929                                         $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted',
 930                                         array( 'parse', 'replaceafter' ),
 931                                         $wgUser->getSkin()->makeKnownLinkObj(
 932                                                 SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 933                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count )
 934                                         )
 935                                 );
 936                                 $wgOut->addHtml( "<div id=\"contentSub2\">{$link}</div>" );
 937                         }
 938
 939                         // Show the relevant lines from deletion log (for still deleted files only)
 940                         if( $title instanceof Title && $title->isDeleted() > 0 && !$title->exists() ) {
 941                                 $this->showDeletionLog( $wgOut, $title->getPrefixedText() );
 942                         }
 943                 }
 944
 945                 $cols = intval($wgUser->getOption( 'cols' ));
 946
 947                 if( $wgUser->getOption( 'editwidth' ) ) {
 948                         $width = " style=\"width:100%\"";
 949                 } else {
 950                         $width = '';
 951                 }
 952
 953                 if ( '' != $msg ) {
 954                         $sub = wfMsgHtml( 'uploaderror' );
 955                         $wgOut->addHTML( "<h2>{$sub}</h2>\n" .
 956                           "<span class='error'>{$msg}</span>\n" );
 957                 }
 958                 $wgOut->addHTML( '<div id="uploadtext">' );
 959                 $wgOut->addWikiMsg( 'uploadtext', $this->mDesiredDestName );
 960                 $wgOut->addHTML( "</div>\n" );
 961
 962                 # Print a list of allowed file extensions, if so configured.  We ignore
 963                 # MIME type here, it's incomprehensible to most people and too long.
 964                 global $wgCheckFileExtensions, $wgStrictFileExtensions,
 965                 $wgFileExtensions, $wgFileBlacklist;
 966
 967                 $allowedExtensions = '';
 968                 if( $wgCheckFileExtensions ) {
 969                         $delim = wfMsgExt( 'comma-separator', array( 'escapenoentities' ) );
 970                         if( $wgStrictFileExtensions ) {
 971                                 # Everything not permitted is banned
 972                                 $extensionsList =
 973                                         '<div id="mw-upload-permitted">' .
 974                                         wfMsgWikiHtml( 'upload-permitted', implode( $wgFileExtensions, $delim ) ) .
 975                                         "</div>\n";
 976                         } else {
 977                                 # We have to list both preferred and prohibited
 978                                 $extensionsList =
 979                                         '<div id="mw-upload-preferred">' .
 980                                         wfMsgWikiHtml( 'upload-preferred', implode( $wgFileExtensions, $delim ) ) .
 981                                         "</div>\n" .
 982                                         '<div id="mw-upload-prohibited">' .
 983                                         wfMsgWikiHtml( 'upload-prohibited', implode( $wgFileBlacklist, $delim ) ) .
 984                                         "</div>\n";
 985                         }
 986                 } else {
 987                         # Everything is permitted.
 988                         $extensionsList = '';
 989                 }
 990
 991                 # Get the maximum file size from php.ini as $wgMaxUploadSize works for uploads from URL via CURL only
 992                 # See http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize for possible values of upload_max_filesize
 993                 $val = trim( ini_get( 'upload_max_filesize' ) );
 994                 $last = strtoupper( ( substr( $val, -1 ) ) );
 995                 switch( $last ) {
 996                         case 'G':
 997                                 $val2 = substr( $val, 0, -1 ) * 1024 * 1024 * 1024;
 998                                 break;
 999                         case 'M':
1000                                 $val2 = substr( $val, 0, -1 ) * 1024 * 1024;
1001                                 break;
1002                         case 'K':
1003                                 $val2 = substr( $val, 0, -1 ) * 1024;
1004                                 break;
1005                         default:
1006                                 $val2 = $val;
1007                 }
1008                 $val2 = $wgAllowCopyUploads ? min( $wgMaxUploadSize, $val2 ) : $val2;
1009                 $maxUploadSize = wfMsgExt( 'upload-maxfilesize', array( 'parseinline', 'escapenoentities' ), $wgLang->formatSize( $val2 ) );
1010
1011                 $sourcefilename = wfMsgExt( 'sourcefilename', 'escapenoentities' );
1012                 $destfilename = wfMsgExt( 'destfilename', 'escapenoentities' );
1013                 $summary = wfMsgExt( 'fileuploadsummary', 'parseinline' );
1014
1015                 $licenses = new Licenses();
1016                 $license = wfMsgExt( 'license', array( 'parseinline' ) );
1017                 $nolicense = wfMsgHtml( 'nolicense' );
1018                 $licenseshtml = $licenses->getHtml();
1019
1020                 $ulb = wfMsgHtml( 'uploadbtn' );
1021
1022
1023                 $titleObj = SpecialPage::getTitleFor( 'Upload' );
1024
1025                 $encDestName = htmlspecialchars( $this->mDesiredDestName );
1026
1027                 $watchChecked = $this->watchCheck()
1028                         ? 'checked="checked"'
1029                         : '';
1030                 $warningChecked = $this->mIgnoreWarning ? 'checked' : '';
1031
1032                 // Prepare form for upload or upload/copy
1033                 if( $wgAllowCopyUploads && $wgUser->isAllowed( 'upload_by_url' ) ) {
1034                         $filename_form =
1035                                 "<input type='radio' id='wpSourceTypeFile' name='wpSourceType' value='file' " .
1036                                    "onchange='toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\")' checked='checked' />" .
1037                                  "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
1038                                    "onfocus='" .
1039                                      "toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\");" .
1040                                      "toggle_element_check(\"wpSourceTypeFile\",\"wpSourceTypeURL\")' " .
1041                                      "onchange='fillDestFilename(\"wpUploadFile\")' size='60' />" .
1042                                 wfMsgHTML( 'upload_source_file' ) . "<br/>" .
1043                                 "<input type='radio' id='wpSourceTypeURL' name='wpSourceType' value='web' " .
1044                                   "onchange='toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\")' />" .
1045                                 "<input tabindex='1' type='text' name='wpUploadFileURL' id='wpUploadFileURL' " .
1046                                   "onfocus='" .
1047                                     "toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\");" .
1048                                     "toggle_element_check(\"wpSourceTypeURL\",\"wpSourceTypeFile\")' " .
1049                                     "onchange='fillDestFilename(\"wpUploadFileURL\")' size='60' disabled='disabled' />" .
1050                                 wfMsgHtml( 'upload_source_url' ) ;
1051                 } else {
1052                         $filename_form =
1053                                 "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
1054                                 ($this->mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFile\")' ") .
1055                                 "size='60' />" .
1056                                 "<input type='hidden' name='wpSourceType' value='file' />" ;
1057                 }
1058                 if ( $useAjaxDestCheck ) {
1059                         $warningRow = "<tr><td colspan='2' id='wpDestFile-warning'>&nbsp;</td></tr>";
1060                         $destOnkeyup = 'onkeyup="wgUploadWarningObj.keypress();"';
1061                 } else {
1062                         $warningRow = '';
1063                         $destOnkeyup = '';
1064                 }
1065
1066                 $encComment = htmlspecialchars( $this->mComment );
1067
1068                 $wgOut->addHTML(
1069                          Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL(),
1070                                  'enctype' => 'multipart/form-data', 'id' => 'mw-upload-form' ) ) .
1071                          Xml::openElement( 'fieldset' ) .
1072                          Xml::element( 'legend', null, wfMsg( 'upload' ) ) .
1073                          Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-upload-table' ) ) .
1074                          "<tr>
1075                                 {$this->uploadFormTextTop}
1076                                 <td class='mw-label'>
1077                                         <label for='wpUploadFile'>{$sourcefilename}</label>
1078                                 </td>
1079                                 <td class='mw-input'>
1080                                         {$filename_form}
1081                                 </td>
1082                         </tr>
1083                         <tr>
1084                                 <td></td>
1085                                 <td>
1086                                         {$maxUploadSize}
1087                                         {$extensionsList}
1088                                 </td>
1089                         </tr>
1090                         <tr>
1091                                 <td class='mw-label'>
1092                                         <label for='wpDestFile'>{$destfilename}</label>
1093                                 </td>
1094                                 <td class='mw-input'>
1095                                         <input tabindex='2' type='text' name='wpDestFile' id='wpDestFile' size='60'
1096                                                 value=\"{$encDestName}\" onchange='toggleFilenameFiller()' $destOnkeyup />
1097                                 </td>
1098                         </tr>
1099                         <tr>
1100                                 <td class='mw-label'>
1101                                         <label for='wpUploadDescription'>{$summary}</label>
1102                                 </td>
1103                                 <td class='mw-input'>
1104                                         <textarea tabindex='3' name='wpUploadDescription' id='wpUploadDescription' rows='6'
1105                                                 cols='{$cols}'{$width}>$encComment</textarea>
1106                                         {$this->uploadFormTextAfterSummary}
1107                                 </td>
1108                         </tr>
1109                         <tr>"
1110                 );
1111
1112                 if ( $licenseshtml != '' ) {
1113                         global $wgStylePath;
1114                         $wgOut->addHTML( "
1115                                         <td class='mw-label'>
1116                                                 <label for='wpLicense'>$license</label>
1117                                         </td>
1118                                         <td class='mw-input'>
1119                                                 <select name='wpLicense' id='wpLicense' tabindex='4'
1120                                                         onchange='licenseSelectorCheck()'>
1121                                                         <option value=''>$nolicense</option>
1122                                                         $licenseshtml
1123                                                 </select>
1124                                         </td>
1125                                 </tr>
1126                                 <tr>"
1127                         );
1128                         if( $useAjaxLicensePreview ) {
1129                                 $wgOut->addHtml( "
1130                                                 <td></td>
1131                                                 <td id=\"mw-license-preview\"></td>
1132                                         </tr>
1133                                         <tr>"
1134                                 );
1135                         }
1136                 }
1137
1138                 if ( $wgUseCopyrightUpload ) {
1139                         $filestatus = wfMsgExt( 'filestatus', 'escapenoentities' );
1140                         $copystatus =  htmlspecialchars( $this->mCopyrightStatus );
1141                         $filesource = wfMsgExt( 'filesource', 'escapenoentities' );
1142                         $uploadsource = htmlspecialchars( $this->mCopyrightSource );
1143
1144                         $wgOut->addHTML( "
1145                                         <td class='mw-label' style='white-space: nowrap;'>
1146                                                 <label for='wpUploadCopyStatus'>$filestatus</label></td>
1147                                         <td class='mw-input'>
1148                                                 <input tabindex='5' type='text' name='wpUploadCopyStatus' id='wpUploadCopyStatus'
1149                                                         value=\"$copystatus\" size='60' />
1150                                         </td>
1151                                 </tr>
1152                                 <tr>
1153                                         <td class='mw-label'>
1154                                                 <label for='wpUploadCopyStatus'>$filesource</label>
1155                                         </td>
1156                                         <td class='mw-input'>
1157                                                 <input tabindex='6' type='text' name='wpUploadSource' id='wpUploadCopyStatus'
1158                                                         value=\"$uploadsource\" size='60' />
1159                                         </td>
1160                                 </tr>
1161                                 <tr>"
1162                         );
1163                 }
1164
1165                 $wgOut->addHtml( "
1166                                 <td></td>
1167                                 <td>
1168                                         <input tabindex='7' type='checkbox' name='wpWatchthis' id='wpWatchthis' $watchChecked value='true' />
1169                                         <label for='wpWatchthis'>" . wfMsgHtml( 'watchthisupload' ) . "</label>
1170                                         <input tabindex='8' type='checkbox' name='wpIgnoreWarning' id='wpIgnoreWarning' value='true' $warningChecked/>
1171                                         <label for='wpIgnoreWarning'>" . wfMsgHtml( 'ignorewarnings' ) . "</label>
1172                                 </td>
1173                         </tr>
1174                         $warningRow
1175                         <tr>
1176                                 <td></td>
1177                                         <td class='mw-input'>
1178                                                 <input tabindex='9' type='submit' name='wpUpload' value=\"{$ulb}\"" . $wgUser->getSkin()->tooltipAndAccesskey( 'upload' ) . " />
1179                                         </td>
1180                         </tr>
1181                         <tr>
1182                                 <td></td>
1183                                 <td class='mw-input'>"
1184                 );
1185                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1186                 $wgOut->addHTML( "
1187                                 </td>
1188                         </tr>" .
1189                         Xml::closeElement( 'table' ) .
1190                         Xml::hidden( 'wpDestFileWarningAck', '', array( 'id' => 'wpDestFileWarningAck' ) ) .
1191                         Xml::closeElement( 'fieldset' ) .
1192                         Xml::closeElement( 'form' )
1193                 );
1194                 $uploadfooter = wfMsgNoTrans( 'uploadfooter' );
1195                 if( $uploadfooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadfooter ) ){
1196                         $wgOut->addWikiText( Xml::tags( 'div',
1197                                 array( 'id' => 'mw-upload-footer-message' ), $uploadfooter ) );
1198                 }
1199         }
1200
1201         /* -------------------------------------------------------------- */
1202
1203         /**
1204          * See if we should check the 'watch this page' checkbox on the form
1205          * based on the user's preferences and whether we're being asked
1206          * to create a new file or update an existing one.
1207          *
1208          * In the case where 'watch edits' is off but 'watch creations' is on,
1209          * we'll leave the box unchecked.
1210          *
1211          * Note that the page target can be changed *on the form*, so our check
1212          * state can get out of sync.
1213          */
1214         function watchCheck() {
1215                 global $wgUser;
1216                 if( $wgUser->getOption( 'watchdefault' ) ) {
1217                         // Watch all edits!
1218                         return true;
1219                 }
1220
1221                 $local = wfLocalFile( $this->mDesiredDestName );
1222                 if( $local && $local->exists() ) {
1223                         // We're uploading a new version of an existing file.
1224                         // No creation, so don't watch it if we're not already.
1225                         return $local->getTitle()->userIsWatching();
1226                 } else {
1227                         // New page should get watched if that's our option.
1228                         return $wgUser->getOption( 'watchcreations' );
1229                 }
1230         }
1231
1232         /**
1233          * Split a file into a base name and all dot-delimited 'extensions'
1234          * on the end. Some web server configurations will fall back to
1235          * earlier pseudo-'extensions' to determine type and execute
1236          * scripts, so the blacklist needs to check them all.
1237          *
1238          * @return array
1239          */
1240         function splitExtensions( $filename ) {
1241                 $bits = explode( '.', $filename );
1242                 $basename = array_shift( $bits );
1243                 return array( $basename, $bits );
1244         }
1245
1246         /**
1247          * Perform case-insensitive match against a list of file extensions.
1248          * Returns true if the extension is in the list.
1249          *
1250          * @param string $ext
1251          * @param array $list
1252          * @return bool
1253          */
1254         function checkFileExtension( $ext, $list ) {
1255                 return in_array( strtolower( $ext ), $list );
1256         }
1257
1258         /**
1259          * Perform case-insensitive match against a list of file extensions.
1260          * Returns true if any of the extensions are in the list.
1261          *
1262          * @param array $ext
1263          * @param array $list
1264          * @return bool
1265          */
1266         function checkFileExtensionList( $ext, $list ) {
1267                 foreach( $ext as $e ) {
1268                         if( in_array( strtolower( $e ), $list ) ) {
1269                                 return true;
1270                         }
1271                 }
1272                 return false;
1273         }
1274
1275         /**
1276          * Verifies that it's ok to include the uploaded file
1277          *
1278          * @param string $tmpfile the full path of the temporary file to verify
1279          * @param string $extension The filename extension that the file is to be served with
1280          * @return mixed true of the file is verified, a WikiError object otherwise.
1281          */
1282         function verify( $tmpfile, $extension ) {
1283                 #magically determine mime type
1284                 $magic = MimeMagic::singleton();
1285                 $mime = $magic->guessMimeType($tmpfile,false);
1286
1287                 #check mime type, if desired
1288                 global $wgVerifyMimeType;
1289                 if ($wgVerifyMimeType) {
1290
1291                   wfDebug ( "\n\nmime: <$mime> extension: <$extension>\n\n");
1292                         #check mime type against file extension
1293                         if( !$this->verifyExtension( $mime, $extension ) ) {
1294                                 return new WikiErrorMsg( 'uploadcorrupt' );
1295                         }
1296
1297                         #check mime type blacklist
1298                         global $wgMimeTypeBlacklist;
1299                         if( isset($wgMimeTypeBlacklist) && !is_null($wgMimeTypeBlacklist)
1300                                 && $this->checkFileExtension( $mime, $wgMimeTypeBlacklist ) ) {
1301                                 return new WikiErrorMsg( 'filetype-badmime', htmlspecialchars( $mime ) );
1302                         }
1303                 }
1304
1305                 #check for htmlish code and javascript
1306                 if( $this->detectScript ( $tmpfile, $mime, $extension ) ) {
1307                         return new WikiErrorMsg( 'uploadscripted' );
1308                 }
1309
1310                 /**
1311                 * Scan the uploaded file for viruses
1312                 */
1313                 $virus= $this->detectVirus($tmpfile);
1314                 if ( $virus ) {
1315                         return new WikiErrorMsg( 'uploadvirus', htmlspecialchars($virus) );
1316                 }
1317
1318                 wfDebug( __METHOD__.": all clear; passing.\n" );
1319                 return true;
1320         }
1321
1322         /**
1323          * Checks if the mime type of the uploaded file matches the file extension.
1324          *
1325          * @param string $mime the mime type of the uploaded file
1326          * @param string $extension The filename extension that the file is to be served with
1327          * @return bool
1328          */
1329         function verifyExtension( $mime, $extension ) {
1330                 $magic = MimeMagic::singleton();
1331
1332                 if ( ! $mime || $mime == 'unknown' || $mime == 'unknown/unknown' )
1333                         if ( ! $magic->isRecognizableExtension( $extension ) ) {
1334                                 wfDebug( __METHOD__.": passing file with unknown detected mime type; " .
1335                                         "unrecognized extension '$extension', can't verify\n" );
1336                                 return true;
1337                         } else {
1338                                 wfDebug( __METHOD__.": rejecting file with unknown detected mime type; ".
1339                                         "recognized extension '$extension', so probably invalid file\n" );
1340                                 return false;
1341                         }
1342
1343                 $match= $magic->isMatchingExtension($extension,$mime);
1344
1345                 if ($match===NULL) {
1346                         wfDebug( __METHOD__.": no file extension known for mime type $mime, passing file\n" );
1347                         return true;
1348                 } elseif ($match===true) {
1349                         wfDebug( __METHOD__.": mime type $mime matches extension $extension, passing file\n" );
1350
1351                         #TODO: if it's a bitmap, make sure PHP or ImageMagic resp. can handle it!
1352                         return true;
1353
1354                 } else {
1355                         wfDebug( __METHOD__.": mime type $mime mismatches file extension $extension, rejecting file\n" );
1356                         return false;
1357                 }
1358         }
1359
1360         /**
1361          * Heuristic for detecting files that *could* contain JavaScript instructions or
1362          * things that may look like HTML to a browser and are thus
1363          * potentially harmful. The present implementation will produce false positives in some situations.
1364          *
1365          * @param string $file Pathname to the temporary upload file
1366          * @param string $mime The mime type of the file
1367          * @param string $extension The extension of the file
1368          * @return bool true if the file contains something looking like embedded scripts
1369          */
1370         function detectScript($file, $mime, $extension) {
1371                 global $wgAllowTitlesInSVG;
1372
1373                 #ugly hack: for text files, always look at the entire file.
1374                 #For binarie field, just check the first K.
1375
1376                 if (strpos($mime,'text/')===0) $chunk = file_get_contents( $file );
1377                 else {
1378                         $fp = fopen( $file, 'rb' );
1379                         $chunk = fread( $fp, 1024 );
1380                         fclose( $fp );
1381                 }
1382
1383                 $chunk= strtolower( $chunk );
1384
1385                 if (!$chunk) return false;
1386
1387                 #decode from UTF-16 if needed (could be used for obfuscation).
1388                 if (substr($chunk,0,2)=="\xfe\xff") $enc= "UTF-16BE";
1389                 elseif (substr($chunk,0,2)=="\xff\xfe") $enc= "UTF-16LE";
1390                 else $enc= NULL;
1391
1392                 if ($enc) $chunk= iconv($enc,"ASCII//IGNORE",$chunk);
1393
1394                 $chunk= trim($chunk);
1395
1396                 #FIXME: convert from UTF-16 if necessarry!
1397
1398                 wfDebug("SpecialUpload::detectScript: checking for embedded scripts and HTML stuff\n");
1399
1400                 #check for HTML doctype
1401                 if (eregi("<!DOCTYPE *X?HTML",$chunk)) return true;
1402
1403                 /**
1404                 * Internet Explorer for Windows performs some really stupid file type
1405                 * autodetection which can cause it to interpret valid image files as HTML
1406                 * and potentially execute JavaScript, creating a cross-site scripting
1407                 * attack vectors.
1408                 *
1409                 * Apple's Safari browser also performs some unsafe file type autodetection
1410                 * which can cause legitimate files to be interpreted as HTML if the
1411                 * web server is not correctly configured to send the right content-type
1412                 * (or if you're really uploading plain text and octet streams!)
1413                 *
1414                 * Returns true if IE is likely to mistake the given file for HTML.
1415                 * Also returns true if Safari would mistake the given file for HTML
1416                 * when served with a generic content-type.
1417                 */
1418
1419                 $tags = array(
1420                         '<body',
1421                         '<head',
1422                         '<html',   #also in safari
1423                         '<img',
1424                         '<pre',
1425                         '<script', #also in safari
1426                         '<table'
1427                         );
1428                 if( ! $wgAllowTitlesInSVG && $extension !== 'svg' && $mime !== 'image/svg' ) {
1429                         $tags[] = '<title';
1430                 }
1431
1432                 foreach( $tags as $tag ) {
1433                         if( false !== strpos( $chunk, $tag ) ) {
1434                                 return true;
1435                         }
1436                 }
1437
1438                 /*
1439                 * look for javascript
1440                 */
1441
1442                 #resolve entity-refs to look at attributes. may be harsh on big files... cache result?
1443                 $chunk = Sanitizer::decodeCharReferences( $chunk );
1444
1445                 #look for script-types
1446                 if (preg_match('!type\s*=\s*[\'"]?\s*(?:\w*/)?(?:ecma|java)!sim',$chunk)) return true;
1447
1448                 #look for html-style script-urls
1449                 if (preg_match('!(?:href|src|data)\s*=\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1450
1451                 #look for css-style script-urls
1452                 if (preg_match('!url\s*\(\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1453
1454                 wfDebug("SpecialUpload::detectScript: no scripts found\n");
1455                 return false;
1456         }
1457
1458         /**
1459          * Generic wrapper function for a virus scanner program.
1460          * This relies on the $wgAntivirus and $wgAntivirusSetup variables.
1461          * $wgAntivirusRequired may be used to deny upload if the scan fails.
1462          *
1463          * @param string $file Pathname to the temporary upload file
1464          * @return mixed false if not virus is found, NULL if the scan fails or is disabled,
1465          *         or a string containing feedback from the virus scanner if a virus was found.
1466          *         If textual feedback is missing but a virus was found, this function returns true.
1467          */
1468         function detectVirus($file) {
1469                 global $wgAntivirus, $wgAntivirusSetup, $wgAntivirusRequired, $wgOut;
1470
1471                 if ( !$wgAntivirus ) {
1472                         wfDebug( __METHOD__.": virus scanner disabled\n");
1473                         return NULL;
1474                 }
1475
1476                 if ( !$wgAntivirusSetup[$wgAntivirus] ) {
1477                         wfDebug( __METHOD__.": unknown virus scanner: $wgAntivirus\n" );
1478                         # @TODO: localise
1479                         $wgOut->addHTML( "<div class='error'>Bad configuration: unknown virus scanner: <i>$wgAntivirus</i></div>\n" );
1480                         return "unknown antivirus: $wgAntivirus";
1481                 }
1482
1483                 # look up scanner configuration
1484                 $command = $wgAntivirusSetup[$wgAntivirus]["command"];
1485                 $exitCodeMap = $wgAntivirusSetup[$wgAntivirus]["codemap"];
1486                 $msgPattern = isset( $wgAntivirusSetup[$wgAntivirus]["messagepattern"] ) ?
1487                         $wgAntivirusSetup[$wgAntivirus]["messagepattern"] : null;
1488
1489                 if ( strpos( $command,"%f" ) === false ) {
1490                         # simple pattern: append file to scan
1491                         $command .= " " . wfEscapeShellArg( $file );
1492                 } else {
1493                         # complex pattern: replace "%f" with file to scan
1494                         $command = str_replace( "%f", wfEscapeShellArg( $file ), $command );
1495                 }
1496
1497                 wfDebug( __METHOD__.": running virus scan: $command \n" );
1498
1499                 # execute virus scanner
1500                 $exitCode = false;
1501
1502                 #NOTE: there's a 50 line workaround to make stderr redirection work on windows, too.
1503                 #      that does not seem to be worth the pain.
1504                 #      Ask me (Duesentrieb) about it if it's ever needed.
1505                 $output = array();
1506                 if ( wfIsWindows() ) {
1507                         exec( "$command", $output, $exitCode );
1508                 } else {
1509                         exec( "$command 2>&1", $output, $exitCode );
1510                 }
1511
1512                 # map exit code to AV_xxx constants.
1513                 $mappedCode = $exitCode;
1514                 if ( $exitCodeMap ) {
1515                         if ( isset( $exitCodeMap[$exitCode] ) ) {
1516                                 $mappedCode = $exitCodeMap[$exitCode];
1517                         } elseif ( isset( $exitCodeMap["*"] ) ) {
1518                                 $mappedCode = $exitCodeMap["*"];
1519                         }
1520                 }
1521
1522                 if ( $mappedCode === AV_SCAN_FAILED ) {
1523                         # scan failed (code was mapped to false by $exitCodeMap)
1524                         wfDebug( __METHOD__.": failed to scan $file (code $exitCode).\n" );
1525
1526                         if ( $wgAntivirusRequired ) {
1527                                 return "scan failed (code $exitCode)";
1528                         } else {
1529                                 return NULL;
1530                         }
1531                 } else if ( $mappedCode === AV_SCAN_ABORTED ) {
1532                         # scan failed because filetype is unknown (probably imune)
1533                         wfDebug( __METHOD__.": unsupported file type $file (code $exitCode).\n" );
1534                         return NULL;
1535                 } else if ( $mappedCode === AV_NO_VIRUS ) {
1536                         # no virus found
1537                         wfDebug( __METHOD__.": file passed virus scan.\n" );
1538                         return false;
1539                 } else {
1540                         $output = join( "\n", $output );
1541                         $output = trim( $output );
1542
1543                         if ( !$output ) {
1544                                 $output = true; #if there's no output, return true
1545                         } elseif ( $msgPattern ) {
1546                                 $groups = array();
1547                                 if ( preg_match( $msgPattern, $output, $groups ) ) {
1548                                         if ( $groups[1] ) {
1549                                                 $output = $groups[1];
1550                                         }
1551                                 }
1552                         }
1553
1554                         wfDebug( __METHOD__.": FOUND VIRUS! scanner feedback: $output" );
1555                         return $output;
1556                 }
1557         }
1558
1559         /**
1560          * Check if the temporary file is MacBinary-encoded, as some uploads
1561          * from Internet Explorer on Mac OS Classic and Mac OS X will be.
1562          * If so, the data fork will be extracted to a second temporary file,
1563          * which will then be checked for validity and either kept or discarded.
1564          *
1565          * @access private
1566          */
1567         function checkMacBinary() {
1568                 $macbin = new MacBinary( $this->mTempPath );
1569                 if( $macbin->isValid() ) {
1570                         $dataFile = tempnam( wfTempDir(), "WikiMacBinary" );
1571                         $dataHandle = fopen( $dataFile, 'wb' );
1572
1573                         wfDebug( "SpecialUpload::checkMacBinary: Extracting MacBinary data fork to $dataFile\n" );
1574                         $macbin->extractData( $dataHandle );
1575
1576                         $this->mTempPath = $dataFile;
1577                         $this->mFileSize = $macbin->dataForkLength();
1578
1579                         // We'll have to manually remove the new file if it's not kept.
1580                         $this->mRemoveTempFile = true;
1581                 }
1582                 $macbin->close();
1583         }
1584
1585         /**
1586          * If we've modified the upload file we need to manually remove it
1587          * on exit to clean up.
1588          * @access private
1589          */
1590         function cleanupTempFile() {
1591                 if ( $this->mRemoveTempFile && file_exists( $this->mTempPath ) ) {
1592                         wfDebug( "SpecialUpload::cleanupTempFile: Removing temporary file {$this->mTempPath}\n" );
1593                         unlink( $this->mTempPath );
1594                 }
1595         }
1596
1597         /**
1598          * Check if there's an overwrite conflict and, if so, if restrictions
1599          * forbid this user from performing the upload.
1600          *
1601          * @return mixed true on success, WikiError on failure
1602          * @access private
1603          */
1604         function checkOverwrite( $name ) {
1605                 $img = wfFindFile( $name );
1606
1607                 $error = '';
1608                 if( $img ) {
1609                         global $wgUser, $wgOut;
1610                         if( $img->isLocal() ) {
1611                                 if( !self::userCanReUpload( $wgUser, $img->name ) ) {
1612                                         $error = 'fileexists-forbidden';
1613                                 }
1614                         } else {
1615                                 if( !$wgUser->isAllowed( 'reupload' ) ||
1616                                     !$wgUser->isAllowed( 'reupload-shared' ) ) {
1617                                         $error = "fileexists-shared-forbidden";
1618                                 }
1619                         }
1620                 }
1621
1622                 if( $error ) {
1623                         $errorText = wfMsg( $error, wfEscapeWikiText( $img->getName() ) );
1624                         return $errorText;
1625                 }
1626
1627                 // Rockin', go ahead and upload
1628                 return true;
1629         }
1630
1631          /**
1632          * Check if a user is the last uploader
1633          *
1634          * @param User $user
1635          * @param string $img, image name
1636          * @return bool
1637          */
1638         public static function userCanReUpload( User $user, $img ) {
1639                 if( $user->isAllowed( 'reupload' ) )
1640                         return true; // non-conditional
1641                 if( !$user->isAllowed( 'reupload-own' ) )
1642                         return false;
1643
1644                 $dbr = wfGetDB( DB_SLAVE );
1645                 $row = $dbr->selectRow('image',
1646                 /* SELECT */ 'img_user',
1647                 /* WHERE */ array( 'img_name' => $img )
1648                 );
1649                 if ( !$row )
1650                         return false;
1651
1652                 return $user->getID() == $row->img_user;
1653         }
1654
1655         /**
1656          * Display an error with a wikitext description
1657          */
1658         function showError( $description ) {
1659                 global $wgOut;
1660                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
1661                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1662                 $wgOut->setArticleRelated( false );
1663                 $wgOut->enableClientCache( false );
1664                 $wgOut->addWikiText( $description );
1665         }
1666
1667         /**
1668          * Get the initial image page text based on a comment and optional file status information
1669          */
1670         static function getInitialPageText( $comment, $license, $copyStatus, $source ) {
1671                 global $wgUseCopyrightUpload;
1672                 if ( $wgUseCopyrightUpload ) {
1673                         if ( $license != '' ) {
1674                                 $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1675                         }
1676                         $pageText = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n" .
1677                           '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
1678                           "$licensetxt" .
1679                           '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
1680                 } else {
1681                         if ( $license != '' ) {
1682                                 $filedesc = $comment == '' ? '' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n";
1683                                  $pageText = $filedesc .
1684                                          '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1685                         } else {
1686                                 $pageText = $comment;
1687                         }
1688                 }
1689                 return $pageText;
1690         }
1691
1692         /**
1693          * If there are rows in the deletion log for this file, show them,
1694          * along with a nice little note for the user
1695          *
1696          * @param OutputPage $out
1697          * @param string filename
1698          */
1699         private function showDeletionLog( $out, $filename ) {
1700                 global $wgUser;
1701                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
1702                 $pager = new LogPager( $loglist, 'delete', false, $filename );
1703                 if( $pager->getNumRows() > 0 ) {
1704                         $out->addHtml( '<div id="mw-upload-deleted-warn">' );
1705                         $out->addWikiMsg( 'upload-wasdeleted' );
1706                         $out->addHTML(
1707                                 $loglist->beginLogEventsList() .
1708                                 $pager->getBody() .
1709                                 $loglist->endLogEventsList()
1710                         );
1711                         $out->addHtml( '</div>' );
1712                 }
1713         }
1714 }