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                                 $wgOut->showPermissionsErrorPage( $details['permissionserrors'] );
 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                 $permErrors = $nt->getUserPermissionsErrors( 'edit', $wgUser );
 440                 $permErrorsUpload = $nt->getUserPermissionsErrors( 'upload', $wgUser );
 441                 $permErrorsCreate = ( $nt->exists() ? array() : $nt->getUserPermissionsErrors( 'create', $wgUser ) );
 442
 443                 if( $permErrors || $permErrorsUpload || $permErrorsCreate ) {
 444                         // merge all the problems into one list, avoiding duplicates
 445                         $permErrors = array_merge( $permErrors, wfArrayDiff2( $permErrorsUpload, $permErrors ) );
 446                         $permErrors = array_merge( $permErrors, wfArrayDiff2( $permErrorsCreate, $permErrors ) );
 447                         $resultDetails = array( 'permissionserrors' => $permErrors );
 448                         return self::PROTECTED_PAGE;
 449                 }
 450
 451                 /**
 452                  * In some cases we may forbid overwriting of existing files.
 453                  */
 454                 $overwrite = $this->checkOverwrite( $this->mDestName );
 455                 if( $overwrite !== true ) {
 456                         $resultDetails = array( 'overwrite' => $overwrite );
 457                         return self::OVERWRITE_EXISTING_FILE;
 458                 }
 459
 460                 /* Don't allow users to override the blacklist (check file extension) */
 461                 global $wgCheckFileExtensions, $wgStrictFileExtensions;
 462                 global $wgFileExtensions, $wgFileBlacklist;
 463                 if ($finalExt == '') {
 464                         return self::FILETYPE_MISSING;
 465                 } elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) ||
 466                                 ($wgCheckFileExtensions && $wgStrictFileExtensions &&
 467                                         !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) {
 468                         $resultDetails = array( 'finalExt' => $finalExt );
 469                         return self::FILETYPE_BADTYPE;
 470                 }
 471
 472                 /**
 473                  * Look at the contents of the file; if we can recognize the
 474                  * type but it's corrupt or data of the wrong type, we should
 475                  * probably not accept it.
 476                  */
 477                 if( !$this->mStashed ) {
 478                         $this->mFileProps = File::getPropsFromPath( $this->mTempPath, $finalExt );
 479                         $this->checkMacBinary();
 480                         $veri = $this->verify( $this->mTempPath, $finalExt );
 481
 482                         if( $veri !== true ) { //it's a wiki error...
 483                                 $resultDetails = array( 'veri' => $veri );
 484                                 return self::VERIFICATION_ERROR;
 485                         }
 486
 487                         /**
 488                          * Provide an opportunity for extensions to add further checks
 489                          */
 490                         $error = '';
 491                         if( !wfRunHooks( 'UploadVerification',
 492                                         array( $this->mDestName, $this->mTempPath, &$error ) ) ) {
 493                                 $resultDetails = array( 'error' => $error );
 494                                 return self::UPLOAD_VERIFICATION_ERROR;
 495                         }
 496                 }
 497
 498
 499                 /**
 500                  * Check for non-fatal conditions
 501                  */
 502                 if ( ! $this->mIgnoreWarning ) {
 503                         $warning = '';
 504
 505                         global $wgCapitalLinks;
 506                         if( $wgCapitalLinks ) {
 507                                 $filtered = ucfirst( $filtered );
 508                         }
 509                         if( $basename != $filtered ) {
 510                                 $warning .=  '<li>'.wfMsgHtml( 'badfilename', htmlspecialchars( $this->mDestName ) ).'</li>';
 511                         }
 512
 513                         global $wgCheckFileExtensions;
 514                         if ( $wgCheckFileExtensions ) {
 515                                 if ( !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) {
 516                                         $warning .= '<li>' .
 517                                         wfMsgExt( 'filetype-unwanted-type',
 518                                                 array( 'parseinline' ),
 519                                                 htmlspecialchars( $finalExt ),
 520                                                 implode(
 521                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 522                                                         $wgFileExtensions
 523                                                 )
 524                                         ) . '</li>';
 525                                 }
 526                         }
 527
 528                         global $wgUploadSizeWarning;
 529                         if ( $wgUploadSizeWarning && ( $this->mFileSize > $wgUploadSizeWarning ) ) {
 530                                 $skin = $wgUser->getSkin();
 531                                 $wsize = $skin->formatSize( $wgUploadSizeWarning );
 532                                 $asize = $skin->formatSize( $this->mFileSize );
 533                                 $warning .= '<li>' . wfMsgHtml( 'large-file', $wsize, $asize ) . '</li>';
 534                         }
 535                         if ( $this->mFileSize == 0 ) {
 536                                 $warning .= '<li>'.wfMsgHtml( 'emptyfile' ).'</li>';
 537                         }
 538
 539                         if ( !$this->mDestWarningAck ) {
 540                                 $warning .= self::getExistsWarning( $this->mLocalFile );
 541                         }
 542                         if( $warning != '' ) {
 543                                 /**
 544                                  * Stash the file in a temporary location; the user can choose
 545                                  * to let it through and we'll complete the upload then.
 546                                  */
 547                                 $resultDetails = array( 'warning' => $warning );
 548                                 return self::UPLOAD_WARNING;
 549                         }
 550                 }
 551
 552                 /**
 553                  * Try actually saving the thing...
 554                  * It will show an error form on failure.
 555                  */
 556                 $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 557                         $this->mCopyrightStatus, $this->mCopyrightSource );
 558
 559                 $status = $this->mLocalFile->upload( $this->mTempPath, $this->mComment, $pageText,
 560                         File::DELETE_SOURCE, $this->mFileProps );
 561                 if ( !$status->isGood() ) {
 562                         $resultDetails = array( 'internal' => $status->getWikiText() );
 563                         return self::INTERNAL_ERROR;
 564                 } else {
 565                         if ( $this->mWatchthis ) {
 566                                 global $wgUser;
 567                                 $wgUser->addWatch( $this->mLocalFile->getTitle() );
 568                         }
 569                         // Success, redirect to description page
 570                         $img = null; // @todo: added to avoid passing a ref to null - should this be defined somewhere?
 571                         wfRunHooks( 'UploadComplete', array( &$this ) );
 572                         return self::SUCCESS;
 573                 }
 574         }
 575
 576         /**
 577          * Do existence checks on a file and produce a warning
 578          * This check is static and can be done pre-upload via AJAX
 579          * Returns an HTML fragment consisting of one or more LI elements if there is a warning
 580          * Returns an empty string if there is no warning
 581          */
 582         static function getExistsWarning( $file ) {
 583                 global $wgUser, $wgContLang;
 584                 // Check for uppercase extension. We allow these filenames but check if an image
 585                 // with lowercase extension exists already
 586                 $warning = '';
 587                 $align = $wgContLang->isRtl() ? 'left' : 'right';
 588
 589                 if( strpos( $file->getName(), '.' ) == false ) {
 590                         $partname = $file->getName();
 591                         $rawExtension = '';
 592                 } else {
 593                         $n = strrpos( $file->getName(), '.' );
 594                         $rawExtension = substr( $file->getName(), $n + 1 );
 595                         $partname = substr( $file->getName(), 0, $n );
 596                 }
 597
 598                 $sk = $wgUser->getSkin();
 599
 600                 if ( $rawExtension != $file->getExtension() ) {
 601                         // We're not using the normalized form of the extension.
 602                         // Normal form is lowercase, using most common of alternate
 603                         // extensions (eg 'jpg' rather than 'JPEG').
 604                         //
 605                         // Check for another file using the normalized form...
 606                         $nt_lc = Title::makeTitle( NS_IMAGE, $partname . '.' . $file->getExtension() );
 607                         $file_lc = wfLocalFile( $nt_lc );
 608                 } else {
 609                         $file_lc = false;
 610                 }
 611
 612                 if( $file->exists() ) {
 613                         $dlink = $sk->makeKnownLinkObj( $file->getTitle() );
 614                         if ( $file->allowInlineDisplay() ) {
 615                                 $dlink2 = $sk->makeImageLinkObj( $file->getTitle(), wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 616                                         $file->getName(), $align, array(), false, true );
 617                         } elseif ( !$file->allowInlineDisplay() && $file->isSafeFile() ) {
 618                                 $icon = $file->iconThumb();
 619                                 $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 620                                         $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
 621                         } else {
 622                                 $dlink2 = '';
 623                         }
 624
 625                         $warning .= '<li>' . wfMsgExt( 'fileexists', array('parseinline','replaceafter'), $dlink ) . '</li>' . $dlink2;
 626
 627                 } elseif( $file->getTitle()->getArticleID() ) {
 628                         $lnk = $sk->makeKnownLinkObj( $file->getTitle(), '', 'redirect=no' );
 629                         $warning .= '<li>' . wfMsgExt( 'filepageexists', array( 'parseinline', 'replaceafter' ), $lnk ) . '</li>';
 630                 } elseif ( $file_lc && $file_lc->exists() ) {
 631                         # Check if image with lowercase extension exists.
 632                         # It's not forbidden but in 99% it makes no sense to upload the same filename with uppercase extension
 633                         $dlink = $sk->makeKnownLinkObj( $nt_lc );
 634                         if ( $file_lc->allowInlineDisplay() ) {
 635                                 $dlink2 = $sk->makeImageLinkObj( $nt_lc, wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 636                                         $nt_lc->getText(), $align, array(), false, true );
 637                         } elseif ( !$file_lc->allowInlineDisplay() && $file_lc->isSafeFile() ) {
 638                                 $icon = $file_lc->iconThumb();
 639                                 $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 640                                         $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
 641                         } else {
 642                                 $dlink2 = '';
 643                         }
 644
 645                         $warning .= '<li>' .
 646                                 wfMsgExt( 'fileexists-extension', 'parsemag',
 647                                         $file->getTitle()->getPrefixedText(), $dlink ) .
 648                                 '</li>' . $dlink2;
 649
 650                 } elseif ( ( substr( $partname , 3, 3 ) == 'px-' || substr( $partname , 2, 3 ) == 'px-' )
 651                         && ereg( "[0-9]{2}" , substr( $partname , 0, 2) ) )
 652                 {
 653                         # Check for filenames like 50px- or 180px-, these are mostly thumbnails
 654                         $nt_thb = Title::newFromText( substr( $partname , strpos( $partname , '-' ) +1 ) . '.' . $rawExtension );
 655                         $file_thb = wfLocalFile( $nt_thb );
 656                         if ($file_thb->exists() ) {
 657                                 # Check if an image without leading '180px-' (or similiar) exists
 658                                 $dlink = $sk->makeKnownLinkObj( $nt_thb);
 659                                 if ( $file_thb->allowInlineDisplay() ) {
 660                                         $dlink2 = $sk->makeImageLinkObj( $nt_thb,
 661                                                 wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 662                                                 $nt_thb->getText(), $align, array(), false, true );
 663                                 } elseif ( !$file_thb->allowInlineDisplay() && $file_thb->isSafeFile() ) {
 664                                         $icon = $file_thb->iconThumb();
 665                                         $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 666                                                 $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' .
 667                                                 $dlink . '</div>';
 668                                 } else {
 669                                         $dlink2 = '';
 670                                 }
 671
 672                                 $warning .= '<li>' . wfMsgExt( 'fileexists-thumbnail-yes', 'parsemag', $dlink ) .
 673                                         '</li>' . $dlink2;
 674                         } else {
 675                                 # Image w/o '180px-' does not exists, but we do not like these filenames
 676                                 $warning .= '<li>' . wfMsgExt( 'file-thumbnail-no', 'parseinline' ,
 677                                         substr( $partname , 0, strpos( $partname , '-' ) +1 ) ) . '</li>';
 678                         }
 679                 }
 680
 681                 $filenamePrefixBlacklist = self::getFilenamePrefixBlacklist();
 682                 # Do the match
 683                 foreach( $filenamePrefixBlacklist as $prefix ) {
 684                         if ( substr( $partname, 0, strlen( $prefix ) ) == $prefix ) {
 685                                 $warning .= '<li>' . wfMsgExt( 'filename-bad-prefix', 'parseinline', $prefix ) . '</li>';
 686                                 break;
 687                         }
 688                 }
 689
 690                 if ( $file->wasDeleted() && !$file->exists() ) {
 691                         # If the file existed before and was deleted, warn the user of this
 692                         # Don't bother doing so if the file exists now, however
 693                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 694                         $llink = $sk->makeKnownLinkObj( $ltitle, wfMsgHtml( 'deletionlog' ),
 695                                 'type=delete&page=' . $file->getTitle()->getPrefixedUrl() );
 696                         $warning .= '<li>' . wfMsgWikiHtml( 'filewasdeleted', $llink ) . '</li>';
 697                 }
 698                 return $warning;
 699         }
 700
 701         /**
 702          * Get a list of warnings
 703          *
 704          * @param string local filename, e.g. 'file exists', 'non-descriptive filename'
 705          * @return array list of warning messages
 706          */
 707         static function ajaxGetExistsWarning( $filename ) {
 708                 $file = wfFindFile( $filename );
 709                 if( !$file ) {
 710                         // Force local file so we have an object to do further checks against
 711                         // if there isn't an exact match...
 712                         $file = wfLocalFile( $filename );
 713                 }
 714                 $s = '&nbsp;';
 715                 if ( $file ) {
 716                         $warning = self::getExistsWarning( $file );
 717                         if ( $warning !== '' ) {
 718                                 $s = "<ul>$warning</ul>";
 719                         }
 720                 }
 721                 return $s;
 722         }
 723
 724         /**
 725          * Render a preview of a given license for the AJAX preview on upload
 726          *
 727          * @param string $license
 728          * @return string
 729          */
 730         public static function ajaxGetLicensePreview( $license ) {
 731                 global $wgParser, $wgUser;
 732                 $text = '{{' . $license . '}}';
 733                 $title = Title::makeTitle( NS_IMAGE, 'Sample.jpg' );
 734                 $options = ParserOptions::newFromUser( $wgUser );
 735
 736                 // Expand subst: first, then live templates...
 737                 $text = $wgParser->preSaveTransform( $text, $title, $wgUser, $options );
 738                 $output = $wgParser->parse( $text, $title, $options );
 739
 740                 return $output->getText();
 741         }
 742
 743         /**
 744          * Get a list of blacklisted filename prefixes from [[MediaWiki:filename-prefix-blacklist]]
 745          *
 746          * @return array list of prefixes
 747          */
 748         public static function getFilenamePrefixBlacklist() {
 749                 $blacklist = array();
 750                 $message = wfMsgForContent( 'filename-prefix-blacklist' );
 751                 if( $message && !( wfEmptyMsg( 'filename-prefix-blacklist', $message ) || $message == '-' ) ) {
 752                         $lines = explode( "\n", $message );
 753                         foreach( $lines as $line ) {
 754                                 // Remove comment lines
 755                                 $comment = substr( trim( $line ), 0, 1 );
 756                                 if ( $comment == '#' || $comment == '' ) {
 757                                         continue;
 758                                 }
 759                                 // Remove additional comments after a prefix
 760                                 $comment = strpos( $line, '#' );
 761                                 if ( $comment > 0 ) {
 762                                         $line = substr( $line, 0, $comment-1 );
 763                                 }
 764                                 $blacklist[] = trim( $line );
 765                         }
 766                 }
 767                 return $blacklist;
 768         }
 769
 770         /**
 771          * Stash a file in a temporary directory for later processing
 772          * after the user has confirmed it.
 773          *
 774          * If the user doesn't explicitly cancel or accept, these files
 775          * can accumulate in the temp directory.
 776          *
 777          * @param string $saveName - the destination filename
 778          * @param string $tempName - the source temporary file to save
 779          * @return string - full path the stashed file, or false on failure
 780          * @access private
 781          */
 782         function saveTempUploadedFile( $saveName, $tempName ) {
 783                 global $wgOut;
 784                 $repo = RepoGroup::singleton()->getLocalRepo();
 785                 $status = $repo->storeTemp( $saveName, $tempName );
 786                 if ( !$status->isGood() ) {
 787                         $this->showError( $status->getWikiText() );
 788                         return false;
 789                 } else {
 790                         return $status->value;
 791                 }
 792         }
 793
 794         /**
 795          * Stash a file in a temporary directory for later processing,
 796          * and save the necessary descriptive info into the session.
 797          * Returns a key value which will be passed through a form
 798          * to pick up the path info on a later invocation.
 799          *
 800          * @return int
 801          * @access private
 802          */
 803         function stashSession() {
 804                 $stash = $this->saveTempUploadedFile( $this->mDestName, $this->mTempPath );
 805
 806                 if( !$stash ) {
 807                         # Couldn't save the file.
 808                         return false;
 809                 }
 810
 811                 $key = mt_rand( 0, 0x7fffffff );
 812                 $_SESSION['wsUploadData'][$key] = array(
 813                         'mTempPath'       => $stash,
 814                         'mFileSize'       => $this->mFileSize,
 815                         'mSrcName'        => $this->mSrcName,
 816                         'mFileProps'      => $this->mFileProps,
 817                         'version'         => self::SESSION_VERSION,
 818                 );
 819                 return $key;
 820         }
 821
 822         /**
 823          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 824          * @access private
 825          * @return success
 826          */
 827         function unsaveUploadedFile() {
 828                 global $wgOut;
 829                 $repo = RepoGroup::singleton()->getLocalRepo();
 830                 $success = $repo->freeTemp( $this->mTempPath );
 831                 if ( ! $success ) {
 832                         $wgOut->showFileDeleteError( $this->mTempPath );
 833                         return false;
 834                 } else {
 835                         return true;
 836                 }
 837         }
 838
 839         /* -------------------------------------------------------------- */
 840
 841         /**
 842          * @param string $error as HTML
 843          * @access private
 844          */
 845         function uploadError( $error ) {
 846                 global $wgOut;
 847                 $wgOut->addHTML( Xml::element( 'h2', null, wfMsg( 'uploadwarning' ) . "\n" ) );
 848                 $wgOut->addHTML( Xml::tags( 'span', array( 'class' => 'error' ), $error ) );
 849         }
 850
 851         /**
 852          * There's something wrong with this file, not enough to reject it
 853          * totally but we require manual intervention to save it for real.
 854          * Stash it away, then present a form asking to confirm or cancel.
 855          *
 856          * @param string $warning as HTML
 857          * @access private
 858          */
 859         function uploadWarning( $warning ) {
 860                 global $wgOut;
 861                 global $wgUseCopyrightUpload;
 862
 863                 $this->mSessionKey = $this->stashSession();
 864                 if( !$this->mSessionKey ) {
 865                         # Couldn't save file; an error has been displayed so let's go.
 866                         return;
 867                 }
 868
 869                 $wgOut->addHTML( Xml::element( 'h2', null, wfMsg( 'uploadwarning' ) ) . "\n" );
 870                 $wgOut->addHTML( Xml::tags( 'ul', array( 'class' => 'warning' ), $warning ) . "\n" );
 871
 872                 $titleObj = SpecialPage::getTitleFor( 'Upload' );
 873
 874                 if ( $wgUseCopyrightUpload ) {
 875                         $copyright = Xml::hidden( 'wpUploadCopyStatus', $this->mCopyrightStatus ) . "\n" .
 876                                         Xml::hidden( 'wpUploadSource', $this->mCopyrightSource ) . "\n";
 877                 } else {
 878                         $copyright = '';
 879                 }
 880
 881                 $wgOut->addHTML(
 882                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL( 'action=submit' ),
 883                                  'enctype' => 'multipart/form-data', 'id' => 'uploadwarning' ) ) . "\n" .
 884                         Xml::hidden( 'wpIgnoreWarning', '1' ) . "\n" .
 885                         Xml::hidden( 'wpSessionKey', $this->mSessionKey ) . "\n" .
 886                         Xml::hidden( 'wpUploadDescription', $this->mComment ) . "\n" .
 887                         Xml::hidden( 'wpLicense', $this->mLicense ) . "\n" .
 888                         Xml::hidden( 'wpDestFile', $this->mDesiredDestName ) . "\n" .
 889                         Xml::hidden( 'wpWatchthis', $this->mWatchthis ) . "\n" .
 890                         "{$copyright}<br />" .
 891                         Xml::submitButton( wfMsg( 'ignorewarning' ), array ( 'name' => 'wpUpload', 'id' => 'wpUpload', 'checked' => 'checked' ) ) . ' ' .
 892                         Xml::submitButton( wfMsg( 'reuploaddesc' ), array ( 'name' => 'wpReUpload', 'id' => 'wpReUpload' ) ) .
 893                         Xml::closeElement( 'form' ) . "\n"
 894                 );
 895         }
 896
 897         /**
 898          * Displays the main upload form, optionally with a highlighted
 899          * error message up at the top.
 900          *
 901          * @param string $msg as HTML
 902          * @access private
 903          */
 904         function mainUploadForm( $msg='' ) {
 905                 global $wgOut, $wgUser, $wgLang, $wgMaxUploadSize;
 906                 global $wgUseCopyrightUpload, $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview;
 907                 global $wgRequest, $wgAllowCopyUploads;
 908                 global $wgStylePath, $wgStyleVersion;
 909
 910                 $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
 911                 $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview;
 912
 913                 $adc = wfBoolToStr( $useAjaxDestCheck );
 914                 $alp = wfBoolToStr( $useAjaxLicensePreview );
 915                 $autofill = wfBoolToStr( $this->mDesiredDestName == '' );
 916
 917                 $wgOut->addScript( "<script type=\"text/javascript\">
 918 wgAjaxUploadDestCheck = {$adc};
 919 wgAjaxLicensePreview = {$alp};
 920 wgUploadAutoFill = {$autofill};
 921 </script>" );
 922                 $wgOut->addScriptFile( 'upload.js' );
 923                 $wgOut->addScriptFile( 'edit.js' ); // For <charinsert> support
 924
 925                 if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) )
 926                 {
 927                         wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 928                         return false;
 929                 }
 930
 931                 if( $this->mDesiredDestName ) {
 932                         $title = Title::makeTitleSafe( NS_IMAGE, $this->mDesiredDestName );
 933                         // Show a subtitle link to deleted revisions (to sysops et al only)
 934                         if( $title instanceof Title && ( $count = $title->isDeleted() ) > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) {
 935                                 $link = wfMsgExt(
 936                                         $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted',
 937                                         array( 'parse', 'replaceafter' ),
 938                                         $wgUser->getSkin()->makeKnownLinkObj(
 939                                                 SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 940                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count )
 941                                         )
 942                                 );
 943                                 $wgOut->addHtml( "<div id=\"contentSub2\">{$link}</div>" );
 944                         }
 945
 946                         // Show the relevant lines from deletion log (for still deleted files only)
 947                         if( $title instanceof Title && $title->isDeleted() > 0 && !$title->exists() ) {
 948                                 $this->showDeletionLog( $wgOut, $title->getPrefixedText() );
 949                         }
 950                 }
 951
 952                 $cols = intval($wgUser->getOption( 'cols' ));
 953
 954                 if( $wgUser->getOption( 'editwidth' ) ) {
 955                         $width = " style=\"width:100%\"";
 956                 } else {
 957                         $width = '';
 958                 }
 959
 960                 if ( '' != $msg ) {
 961                         $sub = wfMsgHtml( 'uploaderror' );
 962                         $wgOut->addHTML( "<h2>{$sub}</h2>\n" .
 963                           "<span class='error'>{$msg}</span>\n" );
 964                 }
 965                 $wgOut->addHTML( '<div id="uploadtext">' );
 966                 $wgOut->addWikiMsg( 'uploadtext', $this->mDesiredDestName );
 967                 $wgOut->addHTML( "</div>\n" );
 968
 969                 # Print a list of allowed file extensions, if so configured.  We ignore
 970                 # MIME type here, it's incomprehensible to most people and too long.
 971                 global $wgCheckFileExtensions, $wgStrictFileExtensions,
 972                 $wgFileExtensions, $wgFileBlacklist;
 973
 974                 $allowedExtensions = '';
 975                 if( $wgCheckFileExtensions ) {
 976                         $delim = wfMsgExt( 'comma-separator', array( 'escapenoentities' ) );
 977                         if( $wgStrictFileExtensions ) {
 978                                 # Everything not permitted is banned
 979                                 $extensionsList =
 980                                         '<div id="mw-upload-permitted">' .
 981                                         wfMsgWikiHtml( 'upload-permitted', implode( $wgFileExtensions, $delim ) ) .
 982                                         "</div>\n";
 983                         } else {
 984                                 # We have to list both preferred and prohibited
 985                                 $extensionsList =
 986                                         '<div id="mw-upload-preferred">' .
 987                                         wfMsgWikiHtml( 'upload-preferred', implode( $wgFileExtensions, $delim ) ) .
 988                                         "</div>\n" .
 989                                         '<div id="mw-upload-prohibited">' .
 990                                         wfMsgWikiHtml( 'upload-prohibited', implode( $wgFileBlacklist, $delim ) ) .
 991                                         "</div>\n";
 992                         }
 993                 } else {
 994                         # Everything is permitted.
 995                         $extensionsList = '';
 996                 }
 997
 998                 # Get the maximum file size from php.ini as $wgMaxUploadSize works for uploads from URL via CURL only
 999                 # See http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize for possible values of upload_max_filesize
1000                 $val = trim( ini_get( 'upload_max_filesize' ) );
1001                 $last = strtoupper( ( substr( $val, -1 ) ) );
1002                 switch( $last ) {
1003                         case 'G':
1004                                 $val2 = substr( $val, 0, -1 ) * 1024 * 1024 * 1024;
1005                                 break;
1006                         case 'M':
1007                                 $val2 = substr( $val, 0, -1 ) * 1024 * 1024;
1008                                 break;
1009                         case 'K':
1010                                 $val2 = substr( $val, 0, -1 ) * 1024;
1011                                 break;
1012                         default:
1013                                 $val2 = $val;
1014                 }
1015                 $val2 = $wgAllowCopyUploads ? min( $wgMaxUploadSize, $val2 ) : $val2;
1016                 $maxUploadSize = wfMsgExt( 'upload-maxfilesize', array( 'parseinline', 'escapenoentities' ), $wgLang->formatSize( $val2 ) );
1017
1018                 $sourcefilename = wfMsgExt( 'sourcefilename', 'escapenoentities' );
1019                 $destfilename = wfMsgExt( 'destfilename', 'escapenoentities' );
1020                 $summary = wfMsgExt( 'fileuploadsummary', 'parseinline' );
1021
1022                 $licenses = new Licenses();
1023                 $license = wfMsgExt( 'license', array( 'parseinline' ) );
1024                 $nolicense = wfMsgHtml( 'nolicense' );
1025                 $licenseshtml = $licenses->getHtml();
1026
1027                 $ulb = wfMsgHtml( 'uploadbtn' );
1028
1029
1030                 $titleObj = SpecialPage::getTitleFor( 'Upload' );
1031
1032                 $encDestName = htmlspecialchars( $this->mDesiredDestName );
1033
1034                 $watchChecked = $this->watchCheck()
1035                         ? 'checked="checked"'
1036                         : '';
1037                 $warningChecked = $this->mIgnoreWarning ? 'checked' : '';
1038
1039                 // Prepare form for upload or upload/copy
1040                 if( $wgAllowCopyUploads && $wgUser->isAllowed( 'upload_by_url' ) ) {
1041                         $filename_form =
1042                                 "<input type='radio' id='wpSourceTypeFile' name='wpSourceType' value='file' " .
1043                                    "onchange='toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\")' checked='checked' />" .
1044                                  "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
1045                                    "onfocus='" .
1046                                      "toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\");" .
1047                                      "toggle_element_check(\"wpSourceTypeFile\",\"wpSourceTypeURL\")' " .
1048                                      "onchange='fillDestFilename(\"wpUploadFile\")' size='60' />" .
1049                                 wfMsgHTML( 'upload_source_file' ) . "<br/>" .
1050                                 "<input type='radio' id='wpSourceTypeURL' name='wpSourceType' value='web' " .
1051                                   "onchange='toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\")' />" .
1052                                 "<input tabindex='1' type='text' name='wpUploadFileURL' id='wpUploadFileURL' " .
1053                                   "onfocus='" .
1054                                     "toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\");" .
1055                                     "toggle_element_check(\"wpSourceTypeURL\",\"wpSourceTypeFile\")' " .
1056                                     "onchange='fillDestFilename(\"wpUploadFileURL\")' size='60' disabled='disabled' />" .
1057                                 wfMsgHtml( 'upload_source_url' ) ;
1058                 } else {
1059                         $filename_form =
1060                                 "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
1061                                 ($this->mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFile\")' ") .
1062                                 "size='60' />" .
1063                                 "<input type='hidden' name='wpSourceType' value='file' />" ;
1064                 }
1065                 if ( $useAjaxDestCheck ) {
1066                         $warningRow = "<tr><td colspan='2' id='wpDestFile-warning'>&nbsp;</td></tr>";
1067                         $destOnkeyup = 'onkeyup="wgUploadWarningObj.keypress();"';
1068                 } else {
1069                         $warningRow = '';
1070                         $destOnkeyup = '';
1071                 }
1072
1073                 $encComment = htmlspecialchars( $this->mComment );
1074
1075                 $wgOut->addHTML(
1076                          Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL(),
1077                                  'enctype' => 'multipart/form-data', 'id' => 'mw-upload-form' ) ) .
1078                          Xml::openElement( 'fieldset' ) .
1079                          Xml::element( 'legend', null, wfMsg( 'upload' ) ) .
1080                          Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-upload-table' ) ) .
1081                          "<tr>
1082                                 {$this->uploadFormTextTop}
1083                                 <td class='mw-label'>
1084                                         <label for='wpUploadFile'>{$sourcefilename}</label>
1085                                 </td>
1086                                 <td class='mw-input'>
1087                                         {$filename_form}
1088                                 </td>
1089                         </tr>
1090                         <tr>
1091                                 <td></td>
1092                                 <td>
1093                                         {$maxUploadSize}
1094                                         {$extensionsList}
1095                                 </td>
1096                         </tr>
1097                         <tr>
1098                                 <td class='mw-label'>
1099                                         <label for='wpDestFile'>{$destfilename}</label>
1100                                 </td>
1101                                 <td class='mw-input'>
1102                                         <input tabindex='2' type='text' name='wpDestFile' id='wpDestFile' size='60'
1103                                                 value=\"{$encDestName}\" onchange='toggleFilenameFiller()' $destOnkeyup />
1104                                 </td>
1105                         </tr>
1106                         <tr>
1107                                 <td class='mw-label'>
1108                                         <label for='wpUploadDescription'>{$summary}</label>
1109                                 </td>
1110                                 <td class='mw-input'>
1111                                         <textarea tabindex='3' name='wpUploadDescription' id='wpUploadDescription' rows='6'
1112                                                 cols='{$cols}'{$width}>$encComment</textarea>
1113                                         {$this->uploadFormTextAfterSummary}
1114                                 </td>
1115                         </tr>
1116                         <tr>"
1117                 );
1118
1119                 if ( $licenseshtml != '' ) {
1120                         global $wgStylePath;
1121                         $wgOut->addHTML( "
1122                                         <td class='mw-label'>
1123                                                 <label for='wpLicense'>$license</label>
1124                                         </td>
1125                                         <td class='mw-input'>
1126                                                 <select name='wpLicense' id='wpLicense' tabindex='4'
1127                                                         onchange='licenseSelectorCheck()'>
1128                                                         <option value=''>$nolicense</option>
1129                                                         $licenseshtml
1130                                                 </select>
1131                                         </td>
1132                                 </tr>
1133                                 <tr>"
1134                         );
1135                         if( $useAjaxLicensePreview ) {
1136                                 $wgOut->addHtml( "
1137                                                 <td></td>
1138                                                 <td id=\"mw-license-preview\"></td>
1139                                         </tr>
1140                                         <tr>"
1141                                 );
1142                         }
1143                 }
1144
1145                 if ( $wgUseCopyrightUpload ) {
1146                         $filestatus = wfMsgExt( 'filestatus', 'escapenoentities' );
1147                         $copystatus =  htmlspecialchars( $this->mCopyrightStatus );
1148                         $filesource = wfMsgExt( 'filesource', 'escapenoentities' );
1149                         $uploadsource = htmlspecialchars( $this->mCopyrightSource );
1150
1151                         $wgOut->addHTML( "
1152                                         <td class='mw-label' style='white-space: nowrap;'>
1153                                                 <label for='wpUploadCopyStatus'>$filestatus</label></td>
1154                                         <td class='mw-input'>
1155                                                 <input tabindex='5' type='text' name='wpUploadCopyStatus' id='wpUploadCopyStatus'
1156                                                         value=\"$copystatus\" size='60' />
1157                                         </td>
1158                                 </tr>
1159                                 <tr>
1160                                         <td class='mw-label'>
1161                                                 <label for='wpUploadCopyStatus'>$filesource</label>
1162                                         </td>
1163                                         <td class='mw-input'>
1164                                                 <input tabindex='6' type='text' name='wpUploadSource' id='wpUploadCopyStatus'
1165                                                         value=\"$uploadsource\" size='60' />
1166                                         </td>
1167                                 </tr>
1168                                 <tr>"
1169                         );
1170                 }
1171
1172                 $wgOut->addHtml( "
1173                                 <td></td>
1174                                 <td>
1175                                         <input tabindex='7' type='checkbox' name='wpWatchthis' id='wpWatchthis' $watchChecked value='true' />
1176                                         <label for='wpWatchthis'>" . wfMsgHtml( 'watchthisupload' ) . "</label>
1177                                         <input tabindex='8' type='checkbox' name='wpIgnoreWarning' id='wpIgnoreWarning' value='true' $warningChecked/>
1178                                         <label for='wpIgnoreWarning'>" . wfMsgHtml( 'ignorewarnings' ) . "</label>
1179                                 </td>
1180                         </tr>
1181                         $warningRow
1182                         <tr>
1183                                 <td></td>
1184                                         <td class='mw-input'>
1185                                                 <input tabindex='9' type='submit' name='wpUpload' value=\"{$ulb}\"" . $wgUser->getSkin()->tooltipAndAccesskey( 'upload' ) . " />
1186                                         </td>
1187                         </tr>
1188                         <tr>
1189                                 <td></td>
1190                                 <td class='mw-input'>"
1191                 );
1192                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1193                 $wgOut->addHTML( "
1194                                 </td>
1195                         </tr>" .
1196                         Xml::closeElement( 'table' ) .
1197                         Xml::hidden( 'wpDestFileWarningAck', '', array( 'id' => 'wpDestFileWarningAck' ) ) .
1198                         Xml::closeElement( 'fieldset' ) .
1199                         Xml::closeElement( 'form' )
1200                 );
1201                 $uploadfooter = wfMsgNoTrans( 'uploadfooter' );
1202                 if( $uploadfooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadfooter ) ){
1203                         $wgOut->addWikiText( Xml::tags( 'div',
1204                                 array( 'id' => 'mw-upload-footer-message' ), $uploadfooter ) );
1205                 }
1206         }
1207
1208         /* -------------------------------------------------------------- */
1209
1210         /**
1211          * See if we should check the 'watch this page' checkbox on the form
1212          * based on the user's preferences and whether we're being asked
1213          * to create a new file or update an existing one.
1214          *
1215          * In the case where 'watch edits' is off but 'watch creations' is on,
1216          * we'll leave the box unchecked.
1217          *
1218          * Note that the page target can be changed *on the form*, so our check
1219          * state can get out of sync.
1220          */
1221         function watchCheck() {
1222                 global $wgUser;
1223                 if( $wgUser->getOption( 'watchdefault' ) ) {
1224                         // Watch all edits!
1225                         return true;
1226                 }
1227
1228                 $local = wfLocalFile( $this->mDesiredDestName );
1229                 if( $local && $local->exists() ) {
1230                         // We're uploading a new version of an existing file.
1231                         // No creation, so don't watch it if we're not already.
1232                         return $local->getTitle()->userIsWatching();
1233                 } else {
1234                         // New page should get watched if that's our option.
1235                         return $wgUser->getOption( 'watchcreations' );
1236                 }
1237         }
1238
1239         /**
1240          * Split a file into a base name and all dot-delimited 'extensions'
1241          * on the end. Some web server configurations will fall back to
1242          * earlier pseudo-'extensions' to determine type and execute
1243          * scripts, so the blacklist needs to check them all.
1244          *
1245          * @return array
1246          */
1247         function splitExtensions( $filename ) {
1248                 $bits = explode( '.', $filename );
1249                 $basename = array_shift( $bits );
1250                 return array( $basename, $bits );
1251         }
1252
1253         /**
1254          * Perform case-insensitive match against a list of file extensions.
1255          * Returns true if the extension is in the list.
1256          *
1257          * @param string $ext
1258          * @param array $list
1259          * @return bool
1260          */
1261         function checkFileExtension( $ext, $list ) {
1262                 return in_array( strtolower( $ext ), $list );
1263         }
1264
1265         /**
1266          * Perform case-insensitive match against a list of file extensions.
1267          * Returns true if any of the extensions are in the list.
1268          *
1269          * @param array $ext
1270          * @param array $list
1271          * @return bool
1272          */
1273         function checkFileExtensionList( $ext, $list ) {
1274                 foreach( $ext as $e ) {
1275                         if( in_array( strtolower( $e ), $list ) ) {
1276                                 return true;
1277                         }
1278                 }
1279                 return false;
1280         }
1281
1282         /**
1283          * Verifies that it's ok to include the uploaded file
1284          *
1285          * @param string $tmpfile the full path of the temporary file to verify
1286          * @param string $extension The filename extension that the file is to be served with
1287          * @return mixed true of the file is verified, a WikiError object otherwise.
1288          */
1289         function verify( $tmpfile, $extension ) {
1290                 #magically determine mime type
1291                 $magic = MimeMagic::singleton();
1292                 $mime = $magic->guessMimeType($tmpfile,false);
1293
1294                 #check mime type, if desired
1295                 global $wgVerifyMimeType;
1296                 if ($wgVerifyMimeType) {
1297
1298                   wfDebug ( "\n\nmime: <$mime> extension: <$extension>\n\n");
1299                         #check mime type against file extension
1300                         if( !$this->verifyExtension( $mime, $extension ) ) {
1301                                 return new WikiErrorMsg( 'uploadcorrupt' );
1302                         }
1303
1304                         #check mime type blacklist
1305                         global $wgMimeTypeBlacklist;
1306                         if( isset($wgMimeTypeBlacklist) && !is_null($wgMimeTypeBlacklist)
1307                                 && $this->checkFileExtension( $mime, $wgMimeTypeBlacklist ) ) {
1308                                 return new WikiErrorMsg( 'filetype-badmime', htmlspecialchars( $mime ) );
1309                         }
1310                 }
1311
1312                 #check for htmlish code and javascript
1313                 if( $this->detectScript ( $tmpfile, $mime, $extension ) ) {
1314                         return new WikiErrorMsg( 'uploadscripted' );
1315                 }
1316
1317                 /**
1318                 * Scan the uploaded file for viruses
1319                 */
1320                 $virus= $this->detectVirus($tmpfile);
1321                 if ( $virus ) {
1322                         return new WikiErrorMsg( 'uploadvirus', htmlspecialchars($virus) );
1323                 }
1324
1325                 wfDebug( __METHOD__.": all clear; passing.\n" );
1326                 return true;
1327         }
1328
1329         /**
1330          * Checks if the mime type of the uploaded file matches the file extension.
1331          *
1332          * @param string $mime the mime type of the uploaded file
1333          * @param string $extension The filename extension that the file is to be served with
1334          * @return bool
1335          */
1336         function verifyExtension( $mime, $extension ) {
1337                 $magic = MimeMagic::singleton();
1338
1339                 if ( ! $mime || $mime == 'unknown' || $mime == 'unknown/unknown' )
1340                         if ( ! $magic->isRecognizableExtension( $extension ) ) {
1341                                 wfDebug( __METHOD__.": passing file with unknown detected mime type; " .
1342                                         "unrecognized extension '$extension', can't verify\n" );
1343                                 return true;
1344                         } else {
1345                                 wfDebug( __METHOD__.": rejecting file with unknown detected mime type; ".
1346                                         "recognized extension '$extension', so probably invalid file\n" );
1347                                 return false;
1348                         }
1349
1350                 $match= $magic->isMatchingExtension($extension,$mime);
1351
1352                 if ($match===NULL) {
1353                         wfDebug( __METHOD__.": no file extension known for mime type $mime, passing file\n" );
1354                         return true;
1355                 } elseif ($match===true) {
1356                         wfDebug( __METHOD__.": mime type $mime matches extension $extension, passing file\n" );
1357
1358                         #TODO: if it's a bitmap, make sure PHP or ImageMagic resp. can handle it!
1359                         return true;
1360
1361                 } else {
1362                         wfDebug( __METHOD__.": mime type $mime mismatches file extension $extension, rejecting file\n" );
1363                         return false;
1364                 }
1365         }
1366
1367         /**
1368          * Heuristic for detecting files that *could* contain JavaScript instructions or
1369          * things that may look like HTML to a browser and are thus
1370          * potentially harmful. The present implementation will produce false positives in some situations.
1371          *
1372          * @param string $file Pathname to the temporary upload file
1373          * @param string $mime The mime type of the file
1374          * @param string $extension The extension of the file
1375          * @return bool true if the file contains something looking like embedded scripts
1376          */
1377         function detectScript($file, $mime, $extension) {
1378                 global $wgAllowTitlesInSVG;
1379
1380                 #ugly hack: for text files, always look at the entire file.
1381                 #For binarie field, just check the first K.
1382
1383                 if (strpos($mime,'text/')===0) $chunk = file_get_contents( $file );
1384                 else {
1385                         $fp = fopen( $file, 'rb' );
1386                         $chunk = fread( $fp, 1024 );
1387                         fclose( $fp );
1388                 }
1389
1390                 $chunk= strtolower( $chunk );
1391
1392                 if (!$chunk) return false;
1393
1394                 #decode from UTF-16 if needed (could be used for obfuscation).
1395                 if (substr($chunk,0,2)=="\xfe\xff") $enc= "UTF-16BE";
1396                 elseif (substr($chunk,0,2)=="\xff\xfe") $enc= "UTF-16LE";
1397                 else $enc= NULL;
1398
1399                 if ($enc) $chunk= iconv($enc,"ASCII//IGNORE",$chunk);
1400
1401                 $chunk= trim($chunk);
1402
1403                 #FIXME: convert from UTF-16 if necessarry!
1404
1405                 wfDebug("SpecialUpload::detectScript: checking for embedded scripts and HTML stuff\n");
1406
1407                 #check for HTML doctype
1408                 if (eregi("<!DOCTYPE *X?HTML",$chunk)) return true;
1409
1410                 /**
1411                 * Internet Explorer for Windows performs some really stupid file type
1412                 * autodetection which can cause it to interpret valid image files as HTML
1413                 * and potentially execute JavaScript, creating a cross-site scripting
1414                 * attack vectors.
1415                 *
1416                 * Apple's Safari browser also performs some unsafe file type autodetection
1417                 * which can cause legitimate files to be interpreted as HTML if the
1418                 * web server is not correctly configured to send the right content-type
1419                 * (or if you're really uploading plain text and octet streams!)
1420                 *
1421                 * Returns true if IE is likely to mistake the given file for HTML.
1422                 * Also returns true if Safari would mistake the given file for HTML
1423                 * when served with a generic content-type.
1424                 */
1425
1426                 $tags = array(
1427                         '<body',
1428                         '<head',
1429                         '<html',   #also in safari
1430                         '<img',
1431                         '<pre',
1432                         '<script', #also in safari
1433                         '<table'
1434                         );
1435                 if( ! $wgAllowTitlesInSVG && $extension !== 'svg' && $mime !== 'image/svg' ) {
1436                         $tags[] = '<title';
1437                 }
1438
1439                 foreach( $tags as $tag ) {
1440                         if( false !== strpos( $chunk, $tag ) ) {
1441                                 return true;
1442                         }
1443                 }
1444
1445                 /*
1446                 * look for javascript
1447                 */
1448
1449                 #resolve entity-refs to look at attributes. may be harsh on big files... cache result?
1450                 $chunk = Sanitizer::decodeCharReferences( $chunk );
1451
1452                 #look for script-types
1453                 if (preg_match('!type\s*=\s*[\'"]?\s*(?:\w*/)?(?:ecma|java)!sim',$chunk)) return true;
1454
1455                 #look for html-style script-urls
1456                 if (preg_match('!(?:href|src|data)\s*=\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1457
1458                 #look for css-style script-urls
1459                 if (preg_match('!url\s*\(\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1460
1461                 wfDebug("SpecialUpload::detectScript: no scripts found\n");
1462                 return false;
1463         }
1464
1465         /**
1466          * Generic wrapper function for a virus scanner program.
1467          * This relies on the $wgAntivirus and $wgAntivirusSetup variables.
1468          * $wgAntivirusRequired may be used to deny upload if the scan fails.
1469          *
1470          * @param string $file Pathname to the temporary upload file
1471          * @return mixed false if not virus is found, NULL if the scan fails or is disabled,
1472          *         or a string containing feedback from the virus scanner if a virus was found.
1473          *         If textual feedback is missing but a virus was found, this function returns true.
1474          */
1475         function detectVirus($file) {
1476                 global $wgAntivirus, $wgAntivirusSetup, $wgAntivirusRequired, $wgOut;
1477
1478                 if ( !$wgAntivirus ) {
1479                         wfDebug( __METHOD__.": virus scanner disabled\n");
1480                         return NULL;
1481                 }
1482
1483                 if ( !$wgAntivirusSetup[$wgAntivirus] ) {
1484                         wfDebug( __METHOD__.": unknown virus scanner: $wgAntivirus\n" );
1485                         # @TODO: localise
1486                         $wgOut->addHTML( "<div class='error'>Bad configuration: unknown virus scanner: <i>$wgAntivirus</i></div>\n" );
1487                         return "unknown antivirus: $wgAntivirus";
1488                 }
1489
1490                 # look up scanner configuration
1491                 $command = $wgAntivirusSetup[$wgAntivirus]["command"];
1492                 $exitCodeMap = $wgAntivirusSetup[$wgAntivirus]["codemap"];
1493                 $msgPattern = isset( $wgAntivirusSetup[$wgAntivirus]["messagepattern"] ) ?
1494                         $wgAntivirusSetup[$wgAntivirus]["messagepattern"] : null;
1495
1496                 if ( strpos( $command,"%f" ) === false ) {
1497                         # simple pattern: append file to scan
1498                         $command .= " " . wfEscapeShellArg( $file );
1499                 } else {
1500                         # complex pattern: replace "%f" with file to scan
1501                         $command = str_replace( "%f", wfEscapeShellArg( $file ), $command );
1502                 }
1503
1504                 wfDebug( __METHOD__.": running virus scan: $command \n" );
1505
1506                 # execute virus scanner
1507                 $exitCode = false;
1508
1509                 #NOTE: there's a 50 line workaround to make stderr redirection work on windows, too.
1510                 #      that does not seem to be worth the pain.
1511                 #      Ask me (Duesentrieb) about it if it's ever needed.
1512                 $output = array();
1513                 if ( wfIsWindows() ) {
1514                         exec( "$command", $output, $exitCode );
1515                 } else {
1516                         exec( "$command 2>&1", $output, $exitCode );
1517                 }
1518
1519                 # map exit code to AV_xxx constants.
1520                 $mappedCode = $exitCode;
1521                 if ( $exitCodeMap ) {
1522                         if ( isset( $exitCodeMap[$exitCode] ) ) {
1523                                 $mappedCode = $exitCodeMap[$exitCode];
1524                         } elseif ( isset( $exitCodeMap["*"] ) ) {
1525                                 $mappedCode = $exitCodeMap["*"];
1526                         }
1527                 }
1528
1529                 if ( $mappedCode === AV_SCAN_FAILED ) {
1530                         # scan failed (code was mapped to false by $exitCodeMap)
1531                         wfDebug( __METHOD__.": failed to scan $file (code $exitCode).\n" );
1532
1533                         if ( $wgAntivirusRequired ) {
1534                                 return "scan failed (code $exitCode)";
1535                         } else {
1536                                 return NULL;
1537                         }
1538                 } else if ( $mappedCode === AV_SCAN_ABORTED ) {
1539                         # scan failed because filetype is unknown (probably imune)
1540                         wfDebug( __METHOD__.": unsupported file type $file (code $exitCode).\n" );
1541                         return NULL;
1542                 } else if ( $mappedCode === AV_NO_VIRUS ) {
1543                         # no virus found
1544                         wfDebug( __METHOD__.": file passed virus scan.\n" );
1545                         return false;
1546                 } else {
1547                         $output = join( "\n", $output );
1548                         $output = trim( $output );
1549
1550                         if ( !$output ) {
1551                                 $output = true; #if there's no output, return true
1552                         } elseif ( $msgPattern ) {
1553                                 $groups = array();
1554                                 if ( preg_match( $msgPattern, $output, $groups ) ) {
1555                                         if ( $groups[1] ) {
1556                                                 $output = $groups[1];
1557                                         }
1558                                 }
1559                         }
1560
1561                         wfDebug( __METHOD__.": FOUND VIRUS! scanner feedback: $output" );
1562                         return $output;
1563                 }
1564         }
1565
1566         /**
1567          * Check if the temporary file is MacBinary-encoded, as some uploads
1568          * from Internet Explorer on Mac OS Classic and Mac OS X will be.
1569          * If so, the data fork will be extracted to a second temporary file,
1570          * which will then be checked for validity and either kept or discarded.
1571          *
1572          * @access private
1573          */
1574         function checkMacBinary() {
1575                 $macbin = new MacBinary( $this->mTempPath );
1576                 if( $macbin->isValid() ) {
1577                         $dataFile = tempnam( wfTempDir(), "WikiMacBinary" );
1578                         $dataHandle = fopen( $dataFile, 'wb' );
1579
1580                         wfDebug( "SpecialUpload::checkMacBinary: Extracting MacBinary data fork to $dataFile\n" );
1581                         $macbin->extractData( $dataHandle );
1582
1583                         $this->mTempPath = $dataFile;
1584                         $this->mFileSize = $macbin->dataForkLength();
1585
1586                         // We'll have to manually remove the new file if it's not kept.
1587                         $this->mRemoveTempFile = true;
1588                 }
1589                 $macbin->close();
1590         }
1591
1592         /**
1593          * If we've modified the upload file we need to manually remove it
1594          * on exit to clean up.
1595          * @access private
1596          */
1597         function cleanupTempFile() {
1598                 if ( $this->mRemoveTempFile && file_exists( $this->mTempPath ) ) {
1599                         wfDebug( "SpecialUpload::cleanupTempFile: Removing temporary file {$this->mTempPath}\n" );
1600                         unlink( $this->mTempPath );
1601                 }
1602         }
1603
1604         /**
1605          * Check if there's an overwrite conflict and, if so, if restrictions
1606          * forbid this user from performing the upload.
1607          *
1608          * @return mixed true on success, WikiError on failure
1609          * @access private
1610          */
1611         function checkOverwrite( $name ) {
1612                 $img = wfFindFile( $name );
1613
1614                 $error = '';
1615                 if( $img ) {
1616                         global $wgUser, $wgOut;
1617                         if( $img->isLocal() ) {
1618                                 if( !self::userCanReUpload( $wgUser, $img->name ) ) {
1619                                         $error = 'fileexists-forbidden';
1620                                 }
1621                         } else {
1622                                 if( !$wgUser->isAllowed( 'reupload' ) ||
1623                                     !$wgUser->isAllowed( 'reupload-shared' ) ) {
1624                                         $error = "fileexists-shared-forbidden";
1625                                 }
1626                         }
1627                 }
1628
1629                 if( $error ) {
1630                         $errorText = wfMsg( $error, wfEscapeWikiText( $img->getName() ) );
1631                         return $errorText;
1632                 }
1633
1634                 // Rockin', go ahead and upload
1635                 return true;
1636         }
1637
1638          /**
1639          * Check if a user is the last uploader
1640          *
1641          * @param User $user
1642          * @param string $img, image name
1643          * @return bool
1644          */
1645         public static function userCanReUpload( User $user, $img ) {
1646                 if( $user->isAllowed( 'reupload' ) )
1647                         return true; // non-conditional
1648                 if( !$user->isAllowed( 'reupload-own' ) )
1649                         return false;
1650
1651                 $dbr = wfGetDB( DB_SLAVE );
1652                 $row = $dbr->selectRow('image',
1653                 /* SELECT */ 'img_user',
1654                 /* WHERE */ array( 'img_name' => $img )
1655                 );
1656                 if ( !$row )
1657                         return false;
1658
1659                 return $user->getId() == $row->img_user;
1660         }
1661
1662         /**
1663          * Display an error with a wikitext description
1664          */
1665         function showError( $description ) {
1666                 global $wgOut;
1667                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
1668                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1669                 $wgOut->setArticleRelated( false );
1670                 $wgOut->enableClientCache( false );
1671                 $wgOut->addWikiText( $description );
1672         }
1673
1674         /**
1675          * Get the initial image page text based on a comment and optional file status information
1676          */
1677         static function getInitialPageText( $comment, $license, $copyStatus, $source ) {
1678                 global $wgUseCopyrightUpload;
1679                 if ( $wgUseCopyrightUpload ) {
1680                         if ( $license != '' ) {
1681                                 $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1682                         }
1683                         $pageText = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n" .
1684                           '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
1685                           "$licensetxt" .
1686                           '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
1687                 } else {
1688                         if ( $license != '' ) {
1689                                 $filedesc = $comment == '' ? '' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n";
1690                                  $pageText = $filedesc .
1691                                          '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1692                         } else {
1693                                 $pageText = $comment;
1694                         }
1695                 }
1696                 return $pageText;
1697         }
1698
1699         /**
1700          * If there are rows in the deletion log for this file, show them,
1701          * along with a nice little note for the user
1702          *
1703          * @param OutputPage $out
1704          * @param string filename
1705          */
1706         private function showDeletionLog( $out, $filename ) {
1707                 global $wgUser;
1708                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
1709                 $pager = new LogPager( $loglist, 'delete', false, $filename );
1710                 if( $pager->getNumRows() > 0 ) {
1711                         $out->addHtml( '<div id="mw-upload-deleted-warn">' );
1712                         $out->addWikiMsg( 'upload-wasdeleted' );
1713                         $out->addHTML(
1714                                 $loglist->beginLogEventsList() .
1715                                 $pager->getBody() .
1716                                 $loglist->endLogEventsList()
1717                         );
1718                         $out->addHtml( '</div>' );
1719                 }
1720         }
1721 }