includes/specials/Upload.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                         # Because it is probably checked and shouldn't be
 263                         $this->mIgnoreWarning = false;
 264
 265                         $this->mainUploadForm();
 266                 } else if( 'submit' == $this->mAction || $this->mUploadClicked ) {
 267                         $this->processUpload();
 268                 } else {
 269                         $this->mainUploadForm();
 270                 }
 271
 272                 $this->cleanupTempFile();
 273         }
 274
 275         /**
 276          * Do the upload
 277          * Checks are made in SpecialUpload::execute()
 278          *
 279          * @access private
 280          */
 281         function processUpload(){
 282                 global $wgUser, $wgOut, $wgFileExtensions;
 283                 $details = null;
 284                 $value = null;
 285                 $value = $this->internalProcessUpload( $details );
 286
 287                 switch($value) {
 288                         case self::SUCCESS:
 289                                 $wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
 290                                 break;
 291
 292                         case self::BEFORE_PROCESSING:
 293                                 break;
 294
 295                         case self::LARGE_FILE_SERVER:
 296                                 $this->mainUploadForm( wfMsgHtml( 'largefileserver' ) );
 297                                 break;
 298
 299                         case self::EMPTY_FILE:
 300                                 $this->mainUploadForm( wfMsgHtml( 'emptyfile' ) );
 301                                 break;
 302
 303                         case self::MIN_LENGHT_PARTNAME:
 304                                 $this->mainUploadForm( wfMsgHtml( 'minlength1' ) );
 305                                 break;
 306
 307                         case self::ILLEGAL_FILENAME:
 308                                 $filtered = $details['filtered'];
 309                                 $this->uploadError( wfMsgWikiHtml( 'illegalfilename', htmlspecialchars( $filtered ) ) );
 310                                 break;
 311
 312                         case self::PROTECTED_PAGE:
 313                                 $wgOut->showPermissionsErrorPage( $details['permissionserrors'] );
 314                                 break;
 315
 316                         case self::OVERWRITE_EXISTING_FILE:
 317                                 $errorText = $details['overwrite'];
 318                                 $overwrite = new WikiError( $wgOut->parse( $errorText ) );
 319                                 $this->uploadError( $overwrite->toString() );
 320                                 break;
 321
 322                         case self::FILETYPE_MISSING:
 323                                 $this->uploadError( wfMsgExt( 'filetype-missing', array ( 'parseinline' ) ) );
 324                                 break;
 325
 326                         case self::FILETYPE_BADTYPE:
 327                                 $finalExt = $details['finalExt'];
 328                                 $this->uploadError(
 329                                         wfMsgExt( 'filetype-banned-type',
 330                                                 array( 'parseinline' ),
 331                                                 htmlspecialchars( $finalExt ),
 332                                                 implode(
 333                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 334                                                         $wgFileExtensions
 335                                                 )
 336                                         )
 337                                 );
 338                                 break;
 339
 340                         case self::VERIFICATION_ERROR:
 341                                 $veri = $details['veri'];
 342                                 $this->uploadError( $veri->toString() );
 343                                 break;
 344
 345                         case self::UPLOAD_VERIFICATION_ERROR:
 346                                 $error = $details['error'];
 347                                 $this->uploadError( $error );
 348                                 break;
 349
 350                         case self::UPLOAD_WARNING:
 351                                 $warning = $details['warning'];
 352                                 $this->uploadWarning( $warning );
 353                                 break;
 354
 355                         case self::INTERNAL_ERROR:
 356                                 $internal = $details['internal'];
 357                                 $this->showError( $internal );
 358                                 break;
 359
 360                         default:
 361                                 throw new MWException( __METHOD__ . ": Unknown value `{$value}`" );
 362                 }
 363         }
 364
 365         /**
 366          * Really do the upload
 367          * Checks are made in SpecialUpload::execute()
 368          *
 369          * @param array $resultDetails contains result-specific dict of additional values
 370          *
 371          * @access private
 372          */
 373         function internalProcessUpload( &$resultDetails ) {
 374                 global $wgUser;
 375
 376                 if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) )
 377                 {
 378                         wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file." );
 379                         return self::BEFORE_PROCESSING;
 380                 }
 381
 382                 /**
 383                  * If there was no filename or a zero size given, give up quick.
 384                  */
 385                 if( trim( $this->mSrcName ) == '' || empty( $this->mFileSize ) ) {
 386                         return self::EMPTY_FILE;
 387                 }
 388
 389                 /* Check for curl error */
 390                 if( $this->mCurlError ) {
 391                         return self::BEFORE_PROCESSING;
 392                 }
 393
 394                 # Chop off any directories in the given filename
 395                 if( $this->mDesiredDestName ) {
 396                         $basename = $this->mDesiredDestName;
 397                 } else {
 398                         $basename = $this->mSrcName;
 399                 }
 400                 $filtered = wfBaseName( $basename );
 401
 402                 /**
 403                  * We'll want to blacklist against *any* 'extension', and use
 404                  * only the final one for the whitelist.
 405                  */
 406                 list( $partname, $ext ) = $this->splitExtensions( $filtered );
 407
 408                 if( count( $ext ) ) {
 409                         $finalExt = $ext[count( $ext ) - 1];
 410                 } else {
 411                         $finalExt = '';
 412                 }
 413
 414                 # If there was more than one "extension", reassemble the base
 415                 # filename to prevent bogus complaints about length
 416                 if( count( $ext ) > 1 ) {
 417                         for( $i = 0; $i < count( $ext ) - 1; $i++ )
 418                                 $partname .= '.' . $ext[$i];
 419                 }
 420
 421                 if( strlen( $partname ) < 1 ) {
 422                         return self::MIN_LENGHT_PARTNAME;
 423                 }
 424
 425                 /**
 426                  * Filter out illegal characters, and try to make a legible name
 427                  * out of it. We'll strip some silently that Title would die on.
 428                  */
 429                 $filtered = preg_replace ( "/[^".Title::legalChars()."]|:/", '-', $filtered );
 430                 $nt = Title::makeTitleSafe( NS_IMAGE, $filtered );
 431                 if( is_null( $nt ) ) {
 432                         $resultDetails = array( 'filtered' => $filtered );
 433                         return self::ILLEGAL_FILENAME;
 434                 }
 435                 $this->mLocalFile = wfLocalFile( $nt );
 436                 $this->mDestName = $this->mLocalFile->getName();
 437
 438                 /**
 439                  * If the image is protected, non-sysop users won't be able
 440                  * to modify it by uploading a new revision.
 441                  */
 442                 $permErrors = $nt->getUserPermissionsErrors( 'edit', $wgUser );
 443                 $permErrorsUpload = $nt->getUserPermissionsErrors( 'upload', $wgUser );
 444                 $permErrorsCreate = ( $nt->exists() ? array() : $nt->getUserPermissionsErrors( 'create', $wgUser ) );
 445
 446                 if( $permErrors || $permErrorsUpload || $permErrorsCreate ) {
 447                         // merge all the problems into one list, avoiding duplicates
 448                         $permErrors = array_merge( $permErrors, wfArrayDiff2( $permErrorsUpload, $permErrors ) );
 449                         $permErrors = array_merge( $permErrors, wfArrayDiff2( $permErrorsCreate, $permErrors ) );
 450                         $resultDetails = array( 'permissionserrors' => $permErrors );
 451                         return self::PROTECTED_PAGE;
 452                 }
 453
 454                 /**
 455                  * In some cases we may forbid overwriting of existing files.
 456                  */
 457                 $overwrite = $this->checkOverwrite( $this->mDestName );
 458                 if( $overwrite !== true ) {
 459                         $resultDetails = array( 'overwrite' => $overwrite );
 460                         return self::OVERWRITE_EXISTING_FILE;
 461                 }
 462
 463                 /* Don't allow users to override the blacklist (check file extension) */
 464                 global $wgCheckFileExtensions, $wgStrictFileExtensions;
 465                 global $wgFileExtensions, $wgFileBlacklist;
 466                 if ($finalExt == '') {
 467                         return self::FILETYPE_MISSING;
 468                 } elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) ||
 469                                 ($wgCheckFileExtensions && $wgStrictFileExtensions &&
 470                                         !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) {
 471                         $resultDetails = array( 'finalExt' => $finalExt );
 472                         return self::FILETYPE_BADTYPE;
 473                 }
 474
 475                 /**
 476                  * Look at the contents of the file; if we can recognize the
 477                  * type but it's corrupt or data of the wrong type, we should
 478                  * probably not accept it.
 479                  */
 480                 if( !$this->mStashed ) {
 481                         $this->mFileProps = File::getPropsFromPath( $this->mTempPath, $finalExt );
 482                         $this->checkMacBinary();
 483                         $veri = $this->verify( $this->mTempPath, $finalExt );
 484
 485                         if( $veri !== true ) { //it's a wiki error...
 486                                 $resultDetails = array( 'veri' => $veri );
 487                                 return self::VERIFICATION_ERROR;
 488                         }
 489
 490                         /**
 491                          * Provide an opportunity for extensions to add further checks
 492                          */
 493                         $error = '';
 494                         if( !wfRunHooks( 'UploadVerification',
 495                                         array( $this->mDestName, $this->mTempPath, &$error ) ) ) {
 496                                 $resultDetails = array( 'error' => $error );
 497                                 return self::UPLOAD_VERIFICATION_ERROR;
 498                         }
 499                 }
 500
 501
 502                 /**
 503                  * Check for non-fatal conditions
 504                  */
 505                 if ( ! $this->mIgnoreWarning ) {
 506                         $warning = '';
 507
 508                         global $wgCapitalLinks;
 509                         if( $wgCapitalLinks ) {
 510                                 $filtered = ucfirst( $filtered );
 511                         }
 512                         if( $basename != $filtered ) {
 513                                 $warning .=  '<li>'.wfMsgHtml( 'badfilename', htmlspecialchars( $this->mDestName ) ).'</li>';
 514                         }
 515
 516                         global $wgCheckFileExtensions;
 517                         if ( $wgCheckFileExtensions ) {
 518                                 if ( !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) {
 519                                         $warning .= '<li>' .
 520                                         wfMsgExt( 'filetype-unwanted-type',
 521                                                 array( 'parseinline' ),
 522                                                 htmlspecialchars( $finalExt ),
 523                                                 implode(
 524                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 525                                                         $wgFileExtensions
 526                                                 )
 527                                         ) . '</li>';
 528                                 }
 529                         }
 530
 531                         global $wgUploadSizeWarning;
 532                         if ( $wgUploadSizeWarning && ( $this->mFileSize > $wgUploadSizeWarning ) ) {
 533                                 $skin = $wgUser->getSkin();
 534                                 $wsize = $skin->formatSize( $wgUploadSizeWarning );
 535                                 $asize = $skin->formatSize( $this->mFileSize );
 536                                 $warning .= '<li>' . wfMsgHtml( 'large-file', $wsize, $asize ) . '</li>';
 537                         }
 538                         if ( $this->mFileSize == 0 ) {
 539                                 $warning .= '<li>'.wfMsgHtml( 'emptyfile' ).'</li>';
 540                         }
 541
 542                         if ( !$this->mDestWarningAck ) {
 543                                 $warning .= self::getExistsWarning( $this->mLocalFile );
 544                         }
 545
 546                         $warning .= $this->getDupeWarning( $this->mTempPath );
 547
 548                         if( $warning != '' ) {
 549                                 /**
 550                                  * Stash the file in a temporary location; the user can choose
 551                                  * to let it through and we'll complete the upload then.
 552                                  */
 553                                 $resultDetails = array( 'warning' => $warning );
 554                                 return self::UPLOAD_WARNING;
 555                         }
 556                 }
 557
 558                 /**
 559                  * Try actually saving the thing...
 560                  * It will show an error form on failure.
 561                  */
 562                 $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 563                         $this->mCopyrightStatus, $this->mCopyrightSource );
 564
 565                 $status = $this->mLocalFile->upload( $this->mTempPath, $this->mComment, $pageText,
 566                         File::DELETE_SOURCE, $this->mFileProps );
 567                 if ( !$status->isGood() ) {
 568                         $resultDetails = array( 'internal' => $status->getWikiText() );
 569                         return self::INTERNAL_ERROR;
 570                 } else {
 571                         if ( $this->mWatchthis ) {
 572                                 global $wgUser;
 573                                 $wgUser->addWatch( $this->mLocalFile->getTitle() );
 574                         }
 575                         // Success, redirect to description page
 576                         $img = null; // @todo: added to avoid passing a ref to null - should this be defined somewhere?
 577                         wfRunHooks( 'UploadComplete', array( &$this ) );
 578                         return self::SUCCESS;
 579                 }
 580         }
 581
 582         /**
 583          * Do existence checks on a file and produce a warning
 584          * This check is static and can be done pre-upload via AJAX
 585          * Returns an HTML fragment consisting of one or more LI elements if there is a warning
 586          * Returns an empty string if there is no warning
 587          */
 588         static function getExistsWarning( $file ) {
 589                 global $wgUser, $wgContLang;
 590                 // Check for uppercase extension. We allow these filenames but check if an image
 591                 // with lowercase extension exists already
 592                 $warning = '';
 593                 $align = $wgContLang->isRtl() ? 'left' : 'right';
 594
 595                 if( strpos( $file->getName(), '.' ) == false ) {
 596                         $partname = $file->getName();
 597                         $rawExtension = '';
 598                 } else {
 599                         $n = strrpos( $file->getName(), '.' );
 600                         $rawExtension = substr( $file->getName(), $n + 1 );
 601                         $partname = substr( $file->getName(), 0, $n );
 602                 }
 603
 604                 $sk = $wgUser->getSkin();
 605
 606                 if ( $rawExtension != $file->getExtension() ) {
 607                         // We're not using the normalized form of the extension.
 608                         // Normal form is lowercase, using most common of alternate
 609                         // extensions (eg 'jpg' rather than 'JPEG').
 610                         //
 611                         // Check for another file using the normalized form...
 612                         $nt_lc = Title::makeTitle( NS_IMAGE, $partname . '.' . $file->getExtension() );
 613                         $file_lc = wfLocalFile( $nt_lc );
 614                 } else {
 615                         $file_lc = false;
 616                 }
 617
 618                 if( $file->exists() ) {
 619                         $dlink = $sk->makeKnownLinkObj( $file->getTitle() );
 620                         if ( $file->allowInlineDisplay() ) {
 621                                 $dlink2 = $sk->makeImageLinkObj( $file->getTitle(), wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 622                                         $file->getName(), $align, array(), false, true );
 623                         } elseif ( !$file->allowInlineDisplay() && $file->isSafeFile() ) {
 624                                 $icon = $file->iconThumb();
 625                                 $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 626                                         $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
 627                         } else {
 628                                 $dlink2 = '';
 629                         }
 630
 631                         $warning .= '<li>' . wfMsgExt( 'fileexists', array('parseinline','replaceafter'), $dlink ) . '</li>' . $dlink2;
 632
 633                 } elseif( $file->getTitle()->getArticleID() ) {
 634                         $lnk = $sk->makeKnownLinkObj( $file->getTitle(), '', 'redirect=no' );
 635                         $warning .= '<li>' . wfMsgExt( 'filepageexists', array( 'parseinline', 'replaceafter' ), $lnk ) . '</li>';
 636                 } elseif ( $file_lc && $file_lc->exists() ) {
 637                         # Check if image with lowercase extension exists.
 638                         # It's not forbidden but in 99% it makes no sense to upload the same filename with uppercase extension
 639                         $dlink = $sk->makeKnownLinkObj( $nt_lc );
 640                         if ( $file_lc->allowInlineDisplay() ) {
 641                                 $dlink2 = $sk->makeImageLinkObj( $nt_lc, wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 642                                         $nt_lc->getText(), $align, array(), false, true );
 643                         } elseif ( !$file_lc->allowInlineDisplay() && $file_lc->isSafeFile() ) {
 644                                 $icon = $file_lc->iconThumb();
 645                                 $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 646                                         $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
 647                         } else {
 648                                 $dlink2 = '';
 649                         }
 650
 651                         $warning .= '<li>' .
 652                                 wfMsgExt( 'fileexists-extension', 'parsemag',
 653                                         $file->getTitle()->getPrefixedText(), $dlink ) .
 654                                 '</li>' . $dlink2;
 655
 656                 } elseif ( ( substr( $partname , 3, 3 ) == 'px-' || substr( $partname , 2, 3 ) == 'px-' )
 657                         && ereg( "[0-9]{2}" , substr( $partname , 0, 2) ) )
 658                 {
 659                         # Check for filenames like 50px- or 180px-, these are mostly thumbnails
 660                         $nt_thb = Title::newFromText( substr( $partname , strpos( $partname , '-' ) +1 ) . '.' . $rawExtension );
 661                         $file_thb = wfLocalFile( $nt_thb );
 662                         if ($file_thb->exists() ) {
 663                                 # Check if an image without leading '180px-' (or similiar) exists
 664                                 $dlink = $sk->makeKnownLinkObj( $nt_thb);
 665                                 if ( $file_thb->allowInlineDisplay() ) {
 666                                         $dlink2 = $sk->makeImageLinkObj( $nt_thb,
 667                                                 wfMsgExt( 'fileexists-thumb', 'parseinline' ),
 668                                                 $nt_thb->getText(), $align, array(), false, true );
 669                                 } elseif ( !$file_thb->allowInlineDisplay() && $file_thb->isSafeFile() ) {
 670                                         $icon = $file_thb->iconThumb();
 671                                         $dlink2 = '<div style="float:' . $align . '" id="mw-media-icon">' .
 672                                                 $icon->toHtml( array( 'desc-link' => true ) ) . '<br />' .
 673                                                 $dlink . '</div>';
 674                                 } else {
 675                                         $dlink2 = '';
 676                                 }
 677
 678                                 $warning .= '<li>' . wfMsgExt( 'fileexists-thumbnail-yes', 'parsemag', $dlink ) .
 679                                         '</li>' . $dlink2;
 680                         } else {
 681                                 # Image w/o '180px-' does not exists, but we do not like these filenames
 682                                 $warning .= '<li>' . wfMsgExt( 'file-thumbnail-no', 'parseinline' ,
 683                                         substr( $partname , 0, strpos( $partname , '-' ) +1 ) ) . '</li>';
 684                         }
 685                 }
 686
 687                 $filenamePrefixBlacklist = self::getFilenamePrefixBlacklist();
 688                 # Do the match
 689                 foreach( $filenamePrefixBlacklist as $prefix ) {
 690                         if ( substr( $partname, 0, strlen( $prefix ) ) == $prefix ) {
 691                                 $warning .= '<li>' . wfMsgExt( 'filename-bad-prefix', 'parseinline', $prefix ) . '</li>';
 692                                 break;
 693                         }
 694                 }
 695
 696                 if ( $file->wasDeleted() && !$file->exists() ) {
 697                         # If the file existed before and was deleted, warn the user of this
 698                         # Don't bother doing so if the file exists now, however
 699                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 700                         $llink = $sk->makeKnownLinkObj( $ltitle, wfMsgHtml( 'deletionlog' ),
 701                                 'type=delete&page=' . $file->getTitle()->getPrefixedUrl() );
 702                         $warning .= '<li>' . wfMsgWikiHtml( 'filewasdeleted', $llink ) . '</li>';
 703                 }
 704                 return $warning;
 705         }
 706
 707         /**
 708          * Get a list of warnings
 709          *
 710          * @param string local filename, e.g. 'file exists', 'non-descriptive filename'
 711          * @return array list of warning messages
 712          */
 713         static function ajaxGetExistsWarning( $filename ) {
 714                 $file = wfFindFile( $filename );
 715                 if( !$file ) {
 716                         // Force local file so we have an object to do further checks against
 717                         // if there isn't an exact match...
 718                         $file = wfLocalFile( $filename );
 719                 }
 720                 $s = '&nbsp;';
 721                 if ( $file ) {
 722                         $warning = self::getExistsWarning( $file );
 723                         if ( $warning !== '' ) {
 724                                 $s = "<ul>$warning</ul>";
 725                         }
 726                 }
 727                 return $s;
 728         }
 729
 730         /**
 731          * Render a preview of a given license for the AJAX preview on upload
 732          *
 733          * @param string $license
 734          * @return string
 735          */
 736         public static function ajaxGetLicensePreview( $license ) {
 737                 global $wgParser, $wgUser;
 738                 $text = '{{' . $license . '}}';
 739                 $title = Title::makeTitle( NS_IMAGE, 'Sample.jpg' );
 740                 $options = ParserOptions::newFromUser( $wgUser );
 741
 742                 // Expand subst: first, then live templates...
 743                 $text = $wgParser->preSaveTransform( $text, $title, $wgUser, $options );
 744                 $output = $wgParser->parse( $text, $title, $options );
 745
 746                 return $output->getText();
 747         }
 748
 749         /**
 750          * Check for duplicate files and throw up a warning before the upload
 751          * completes.
 752          */
 753         function getDupeWarning( $tempfile ) {
 754                 $hash = File::sha1Base36( $tempfile );
 755                 $dupes = RepoGroup::singleton()->findBySha1( $hash );
 756                 if( $dupes ) {
 757                         global $wgOut;
 758                         $msg = "<gallery>";
 759                         foreach( $dupes as $file ) {
 760                                 $title = $file->getTitle();
 761                                 $msg .= $title->getPrefixedText() .
 762                                         "|" . $title->getText() . "\n";
 763                         }
 764                         $msg .= "</gallery>";
 765                         return "<li>" .
 766                                 wfMsgExt( "file-exists-duplicate", array( "parse" ), count( $dupes ) ) .
 767                                 $wgOut->parse( $msg ) .
 768                                 "</li>\n";
 769                 } else {
 770                         return '';
 771                 }
 772         }
 773
 774         /**
 775          * Get a list of blacklisted filename prefixes from [[MediaWiki:filename-prefix-blacklist]]
 776          *
 777          * @return array list of prefixes
 778          */
 779         public static function getFilenamePrefixBlacklist() {
 780                 $blacklist = array();
 781                 $message = wfMsgForContent( 'filename-prefix-blacklist' );
 782                 if( $message && !( wfEmptyMsg( 'filename-prefix-blacklist', $message ) || $message == '-' ) ) {
 783                         $lines = explode( "\n", $message );
 784                         foreach( $lines as $line ) {
 785                                 // Remove comment lines
 786                                 $comment = substr( trim( $line ), 0, 1 );
 787                                 if ( $comment == '#' || $comment == '' ) {
 788                                         continue;
 789                                 }
 790                                 // Remove additional comments after a prefix
 791                                 $comment = strpos( $line, '#' );
 792                                 if ( $comment > 0 ) {
 793                                         $line = substr( $line, 0, $comment-1 );
 794                                 }
 795                                 $blacklist[] = trim( $line );
 796                         }
 797                 }
 798                 return $blacklist;
 799         }
 800
 801         /**
 802          * Stash a file in a temporary directory for later processing
 803          * after the user has confirmed it.
 804          *
 805          * If the user doesn't explicitly cancel or accept, these files
 806          * can accumulate in the temp directory.
 807          *
 808          * @param string $saveName - the destination filename
 809          * @param string $tempName - the source temporary file to save
 810          * @return string - full path the stashed file, or false on failure
 811          * @access private
 812          */
 813         function saveTempUploadedFile( $saveName, $tempName ) {
 814                 global $wgOut;
 815                 $repo = RepoGroup::singleton()->getLocalRepo();
 816                 $status = $repo->storeTemp( $saveName, $tempName );
 817                 if ( !$status->isGood() ) {
 818                         $this->showError( $status->getWikiText() );
 819                         return false;
 820                 } else {
 821                         return $status->value;
 822                 }
 823         }
 824
 825         /**
 826          * Stash a file in a temporary directory for later processing,
 827          * and save the necessary descriptive info into the session.
 828          * Returns a key value which will be passed through a form
 829          * to pick up the path info on a later invocation.
 830          *
 831          * @return int
 832          * @access private
 833          */
 834         function stashSession() {
 835                 $stash = $this->saveTempUploadedFile( $this->mDestName, $this->mTempPath );
 836
 837                 if( !$stash ) {
 838                         # Couldn't save the file.
 839                         return false;
 840                 }
 841
 842                 $key = mt_rand( 0, 0x7fffffff );
 843                 $_SESSION['wsUploadData'][$key] = array(
 844                         'mTempPath'       => $stash,
 845                         'mFileSize'       => $this->mFileSize,
 846                         'mSrcName'        => $this->mSrcName,
 847                         'mFileProps'      => $this->mFileProps,
 848                         'version'         => self::SESSION_VERSION,
 849                 );
 850                 return $key;
 851         }
 852
 853         /**
 854          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 855          * @access private
 856          * @return success
 857          */
 858         function unsaveUploadedFile() {
 859                 global $wgOut;
 860                 $repo = RepoGroup::singleton()->getLocalRepo();
 861                 $success = $repo->freeTemp( $this->mTempPath );
 862                 if ( ! $success ) {
 863                         $wgOut->showFileDeleteError( $this->mTempPath );
 864                         return false;
 865                 } else {
 866                         return true;
 867                 }
 868         }
 869
 870         /* -------------------------------------------------------------- */
 871
 872         /**
 873          * @param string $error as HTML
 874          * @access private
 875          */
 876         function uploadError( $error ) {
 877                 global $wgOut;
 878                 $wgOut->addHTML( '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" );
 879                 $wgOut->addHTML( '<span class="error">' . $error . '</span>' );
 880         }
 881
 882         /**
 883          * There's something wrong with this file, not enough to reject it
 884          * totally but we require manual intervention to save it for real.
 885          * Stash it away, then present a form asking to confirm or cancel.
 886          *
 887          * @param string $warning as HTML
 888          * @access private
 889          */
 890         function uploadWarning( $warning ) {
 891                 global $wgOut;
 892                 global $wgUseCopyrightUpload;
 893
 894                 $this->mSessionKey = $this->stashSession();
 895                 if( !$this->mSessionKey ) {
 896                         # Couldn't save file; an error has been displayed so let's go.
 897                         return;
 898                 }
 899
 900                 $wgOut->addHTML( '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" );
 901                 $wgOut->addHTML( '<ul class="warning">' . $warning . "</ul>\n" );
 902
 903                 $titleObj = SpecialPage::getTitleFor( 'Upload' );
 904
 905                 if ( $wgUseCopyrightUpload ) {
 906                         $copyright = Xml::hidden( 'wpUploadCopyStatus', $this->mCopyrightStatus ) . "\n" .
 907                                         Xml::hidden( 'wpUploadSource', $this->mCopyrightSource ) . "\n";
 908                 } else {
 909                         $copyright = '';
 910                 }
 911
 912                 $wgOut->addHTML(
 913                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL( 'action=submit' ),
 914                                  'enctype' => 'multipart/form-data', 'id' => 'uploadwarning' ) ) . "\n" .
 915                         Xml::hidden( 'wpIgnoreWarning', '1' ) . "\n" .
 916                         Xml::hidden( 'wpSessionKey', $this->mSessionKey ) . "\n" .
 917                         Xml::hidden( 'wpUploadDescription', $this->mComment ) . "\n" .
 918                         Xml::hidden( 'wpLicense', $this->mLicense ) . "\n" .
 919                         Xml::hidden( 'wpDestFile', $this->mDesiredDestName ) . "\n" .
 920                         Xml::hidden( 'wpWatchthis', $this->mWatchthis ) . "\n" .
 921                         "{$copyright}<br />" .
 922                         Xml::submitButton( wfMsg( 'ignorewarning' ), array ( 'name' => 'wpUpload', 'id' => 'wpUpload', 'checked' => 'checked' ) ) . ' ' .
 923                         Xml::submitButton( wfMsg( 'reuploaddesc' ), array ( 'name' => 'wpReUpload', 'id' => 'wpReUpload' ) ) .
 924                         Xml::closeElement( 'form' ) . "\n"
 925                 );
 926         }
 927
 928         /**
 929          * Displays the main upload form, optionally with a highlighted
 930          * error message up at the top.
 931          *
 932          * @param string $msg as HTML
 933          * @access private
 934          */
 935         function mainUploadForm( $msg='' ) {
 936                 global $wgOut, $wgUser, $wgLang, $wgMaxUploadSize;
 937                 global $wgUseCopyrightUpload, $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview;
 938                 global $wgRequest, $wgAllowCopyUploads;
 939                 global $wgStylePath, $wgStyleVersion;
 940
 941                 $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
 942                 $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview;
 943
 944                 $adc = wfBoolToStr( $useAjaxDestCheck );
 945                 $alp = wfBoolToStr( $useAjaxLicensePreview );
 946                 $autofill = wfBoolToStr( $this->mDesiredDestName == '' );
 947
 948                 $wgOut->addScript( "<script type=\"text/javascript\">
 949 wgAjaxUploadDestCheck = {$adc};
 950 wgAjaxLicensePreview = {$alp};
 951 wgUploadAutoFill = {$autofill};
 952 </script>" );
 953                 $wgOut->addScriptFile( 'upload.js' );
 954                 $wgOut->addScriptFile( 'edit.js' ); // For <charinsert> support
 955
 956                 if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) )
 957                 {
 958                         wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 959                         return false;
 960                 }
 961
 962                 if( $this->mDesiredDestName ) {
 963                         $title = Title::makeTitleSafe( NS_IMAGE, $this->mDesiredDestName );
 964                         // Show a subtitle link to deleted revisions (to sysops et al only)
 965                         if( $title instanceof Title && ( $count = $title->isDeleted() ) > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) {
 966                                 $link = wfMsgExt(
 967                                         $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted',
 968                                         array( 'parse', 'replaceafter' ),
 969                                         $wgUser->getSkin()->makeKnownLinkObj(
 970                                                 SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 971                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count )
 972                                         )
 973                                 );
 974                                 $wgOut->addHtml( "<div id=\"contentSub2\">{$link}</div>" );
 975                         }
 976
 977                         // Show the relevant lines from deletion log (for still deleted files only)
 978                         if( $title instanceof Title && $title->isDeleted() > 0 && !$title->exists() ) {
 979                                 $this->showDeletionLog( $wgOut, $title->getPrefixedText() );
 980                         }
 981                 }
 982
 983                 $cols = intval($wgUser->getOption( 'cols' ));
 984
 985                 if( $wgUser->getOption( 'editwidth' ) ) {
 986                         $width = " style=\"width:100%\"";
 987                 } else {
 988                         $width = '';
 989                 }
 990
 991                 if ( '' != $msg ) {
 992                         $sub = wfMsgHtml( 'uploaderror' );
 993                         $wgOut->addHTML( "<h2>{$sub}</h2>\n" .
 994                           "<span class='error'>{$msg}</span>\n" );
 995                 }
 996                 $wgOut->addHTML( '<div id="uploadtext">' );
 997                 $wgOut->addWikiMsg( 'uploadtext', $this->mDesiredDestName );
 998                 $wgOut->addHTML( "</div>\n" );
 999
1000                 # Print a list of allowed file extensions, if so configured.  We ignore
1001                 # MIME type here, it's incomprehensible to most people and too long.
1002                 global $wgCheckFileExtensions, $wgStrictFileExtensions,
1003                 $wgFileExtensions, $wgFileBlacklist;
1004
1005                 $allowedExtensions = '';
1006                 if( $wgCheckFileExtensions ) {
1007                         $delim = wfMsgExt( 'comma-separator', array( 'escapenoentities' ) );
1008                         if( $wgStrictFileExtensions ) {
1009                                 # Everything not permitted is banned
1010                                 $extensionsList =
1011                                         '<div id="mw-upload-permitted">' .
1012                                         wfMsgWikiHtml( 'upload-permitted', implode( $wgFileExtensions, $delim ) ) .
1013                                         "</div>\n";
1014                         } else {
1015                                 # We have to list both preferred and prohibited
1016                                 $extensionsList =
1017                                         '<div id="mw-upload-preferred">' .
1018                                         wfMsgWikiHtml( 'upload-preferred', implode( $wgFileExtensions, $delim ) ) .
1019                                         "</div>\n" .
1020                                         '<div id="mw-upload-prohibited">' .
1021                                         wfMsgWikiHtml( 'upload-prohibited', implode( $wgFileBlacklist, $delim ) ) .
1022                                         "</div>\n";
1023                         }
1024                 } else {
1025                         # Everything is permitted.
1026                         $extensionsList = '';
1027                 }
1028
1029                 # Get the maximum file size from php.ini as $wgMaxUploadSize works for uploads from URL via CURL only
1030                 # See http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize for possible values of upload_max_filesize
1031                 $val = trim( ini_get( 'upload_max_filesize' ) );
1032                 $last = strtoupper( ( substr( $val, -1 ) ) );
1033                 switch( $last ) {
1034                         case 'G':
1035                                 $val2 = substr( $val, 0, -1 ) * 1024 * 1024 * 1024;
1036                                 break;
1037                         case 'M':
1038                                 $val2 = substr( $val, 0, -1 ) * 1024 * 1024;
1039                                 break;
1040                         case 'K':
1041                                 $val2 = substr( $val, 0, -1 ) * 1024;
1042                                 break;
1043                         default:
1044                                 $val2 = $val;
1045                 }
1046                 $val2 = $wgAllowCopyUploads ? min( $wgMaxUploadSize, $val2 ) : $val2;
1047                 $maxUploadSize = '<div id="mw-upload-maxfilesize">' .
1048                         wfMsgExt( 'upload-maxfilesize', array( 'parseinline', 'escapenoentities' ),
1049                                 $wgLang->formatSize( $val2 ) ) .
1050                                 "</div>\n";
1051
1052                 $sourcefilename = wfMsgExt( 'sourcefilename', array( 'parseinline', 'escapenoentities' ) );
1053         $destfilename = wfMsgExt( 'destfilename', array( 'parseinline', 'escapenoentities' ) );
1054
1055                 $summary = wfMsgExt( 'fileuploadsummary', 'parseinline' );
1056
1057                 $licenses = new Licenses();
1058                 $license = wfMsgExt( 'license', array( 'parseinline' ) );
1059                 $nolicense = wfMsgHtml( 'nolicense' );
1060                 $licenseshtml = $licenses->getHtml();
1061
1062                 $ulb = wfMsgHtml( 'uploadbtn' );
1063
1064
1065                 $titleObj = SpecialPage::getTitleFor( 'Upload' );
1066
1067                 $encDestName = htmlspecialchars( $this->mDesiredDestName );
1068
1069                 $watchChecked = $this->watchCheck()
1070                         ? 'checked="checked"'
1071                         : '';
1072                 $warningChecked = $this->mIgnoreWarning ? 'checked' : '';
1073
1074                 // Prepare form for upload or upload/copy
1075                 if( $wgAllowCopyUploads && $wgUser->isAllowed( 'upload_by_url' ) ) {
1076                         $filename_form =
1077                                 "<input type='radio' id='wpSourceTypeFile' name='wpSourceType' value='file' " .
1078                                    "onchange='toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\")' checked='checked' />" .
1079                                  "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
1080                                    "onfocus='" .
1081                                      "toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\");" .
1082                                      "toggle_element_check(\"wpSourceTypeFile\",\"wpSourceTypeURL\")' " .
1083                                      "onchange='fillDestFilename(\"wpUploadFile\")' size='60' />" .
1084                                 wfMsgHTML( 'upload_source_file' ) . "<br/>" .
1085                                 "<input type='radio' id='wpSourceTypeURL' name='wpSourceType' value='web' " .
1086                                   "onchange='toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\")' />" .
1087                                 "<input tabindex='1' type='text' name='wpUploadFileURL' id='wpUploadFileURL' " .
1088                                   "onfocus='" .
1089                                     "toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\");" .
1090                                     "toggle_element_check(\"wpSourceTypeURL\",\"wpSourceTypeFile\")' " .
1091                                     "onchange='fillDestFilename(\"wpUploadFileURL\")' size='60' disabled='disabled' />" .
1092                                 wfMsgHtml( 'upload_source_url' ) ;
1093                 } else {
1094                         $filename_form =
1095                                 "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
1096                                 ($this->mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFile\")' ") .
1097                                 "size='60' />" .
1098                                 "<input type='hidden' name='wpSourceType' value='file' />" ;
1099                 }
1100                 if ( $useAjaxDestCheck ) {
1101                         $warningRow = "<tr><td colspan='2' id='wpDestFile-warning'>&nbsp;</td></tr>";
1102                         $destOnkeyup = 'onkeyup="wgUploadWarningObj.keypress();"';
1103                 } else {
1104                         $warningRow = '';
1105                         $destOnkeyup = '';
1106                 }
1107
1108                 $encComment = htmlspecialchars( $this->mComment );
1109
1110                 $wgOut->addHTML(
1111                          Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL(),
1112                                  'enctype' => 'multipart/form-data', 'id' => 'mw-upload-form' ) ) .
1113                          Xml::openElement( 'fieldset' ) .
1114                          Xml::element( 'legend', null, wfMsg( 'upload' ) ) .
1115                          Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-upload-table' ) ) .
1116                          "<tr>
1117                                 {$this->uploadFormTextTop}
1118                                 <td class='mw-label'>
1119                                         <label for='wpUploadFile'>{$sourcefilename}</label>
1120                                 </td>
1121                                 <td class='mw-input'>
1122                                         {$filename_form}
1123                                 </td>
1124                         </tr>
1125                         <tr>
1126                                 <td></td>
1127                                 <td>
1128                                         {$maxUploadSize}
1129                                         {$extensionsList}
1130                                 </td>
1131                         </tr>
1132                         <tr>
1133                                 <td class='mw-label'>
1134                                         <label for='wpDestFile'>{$destfilename}</label>
1135                                 </td>
1136                                 <td class='mw-input'>
1137                                         <input tabindex='2' type='text' name='wpDestFile' id='wpDestFile' size='60'
1138                                                 value=\"{$encDestName}\" onchange='toggleFilenameFiller()' $destOnkeyup />
1139                                 </td>
1140                         </tr>
1141                         <tr>
1142                                 <td class='mw-label'>
1143                                         <label for='wpUploadDescription'>{$summary}</label>
1144                                 </td>
1145                                 <td class='mw-input'>
1146                                         <textarea tabindex='3' name='wpUploadDescription' id='wpUploadDescription' rows='6'
1147                                                 cols='{$cols}'{$width}>$encComment</textarea>
1148                                         {$this->uploadFormTextAfterSummary}
1149                                 </td>
1150                         </tr>
1151                         <tr>"
1152                 );
1153
1154                 if ( $licenseshtml != '' ) {
1155                         global $wgStylePath;
1156                         $wgOut->addHTML( "
1157                                         <td class='mw-label'>
1158                                                 <label for='wpLicense'>$license</label>
1159                                         </td>
1160                                         <td class='mw-input'>
1161                                                 <select name='wpLicense' id='wpLicense' tabindex='4'
1162                                                         onchange='licenseSelectorCheck()'>
1163                                                         <option value=''>$nolicense</option>
1164                                                         $licenseshtml
1165                                                 </select>
1166                                         </td>
1167                                 </tr>
1168                                 <tr>"
1169                         );
1170                         if( $useAjaxLicensePreview ) {
1171                                 $wgOut->addHtml( "
1172                                                 <td></td>
1173                                                 <td id=\"mw-license-preview\"></td>
1174                                         </tr>
1175                                         <tr>"
1176                                 );
1177                         }
1178                 }
1179
1180                 if ( $wgUseCopyrightUpload ) {
1181                         $filestatus = wfMsgExt( 'filestatus', 'escapenoentities' );
1182                         $copystatus =  htmlspecialchars( $this->mCopyrightStatus );
1183                         $filesource = wfMsgExt( 'filesource', 'escapenoentities' );
1184                         $uploadsource = htmlspecialchars( $this->mCopyrightSource );
1185
1186                         $wgOut->addHTML( "
1187                                         <td class='mw-label' style='white-space: nowrap;'>
1188                                                 <label for='wpUploadCopyStatus'>$filestatus</label></td>
1189                                         <td class='mw-input'>
1190                                                 <input tabindex='5' type='text' name='wpUploadCopyStatus' id='wpUploadCopyStatus'
1191                                                         value=\"$copystatus\" size='60' />
1192                                         </td>
1193                                 </tr>
1194                                 <tr>
1195                                         <td class='mw-label'>
1196                                                 <label for='wpUploadCopyStatus'>$filesource</label>
1197                                         </td>
1198                                         <td class='mw-input'>
1199                                                 <input tabindex='6' type='text' name='wpUploadSource' id='wpUploadCopyStatus'
1200                                                         value=\"$uploadsource\" size='60' />
1201                                         </td>
1202                                 </tr>
1203                                 <tr>"
1204                         );
1205                 }
1206
1207                 $wgOut->addHtml( "
1208                                 <td></td>
1209                                 <td>
1210                                         <input tabindex='7' type='checkbox' name='wpWatchthis' id='wpWatchthis' $watchChecked value='true' />
1211                                         <label for='wpWatchthis'>" . wfMsgHtml( 'watchthisupload' ) . "</label>
1212                                         <input tabindex='8' type='checkbox' name='wpIgnoreWarning' id='wpIgnoreWarning' value='true' $warningChecked/>
1213                                         <label for='wpIgnoreWarning'>" . wfMsgHtml( 'ignorewarnings' ) . "</label>
1214                                 </td>
1215                         </tr>
1216                         $warningRow
1217                         <tr>
1218                                 <td></td>
1219                                         <td class='mw-input'>
1220                                                 <input tabindex='9' type='submit' name='wpUpload' value=\"{$ulb}\"" . $wgUser->getSkin()->tooltipAndAccesskey( 'upload' ) . " />
1221                                         </td>
1222                         </tr>
1223                         <tr>
1224                                 <td></td>
1225                                 <td class='mw-input'>"
1226                 );
1227                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1228                 $wgOut->addHTML( "
1229                                 </td>
1230                         </tr>" .
1231                         Xml::closeElement( 'table' ) .
1232                         Xml::hidden( 'wpDestFileWarningAck', '', array( 'id' => 'wpDestFileWarningAck' ) ) .
1233                         Xml::closeElement( 'fieldset' ) .
1234                         Xml::closeElement( 'form' )
1235                 );
1236                 $uploadfooter = wfMsgNoTrans( 'uploadfooter' );
1237                 if( $uploadfooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadfooter ) ){
1238                         $wgOut->addWikiText( '<div id="mw-upload-footer-message">' . $uploadfooter . '</div>' );
1239                 }
1240         }
1241
1242         /* -------------------------------------------------------------- */
1243
1244         /**
1245          * See if we should check the 'watch this page' checkbox on the form
1246          * based on the user's preferences and whether we're being asked
1247          * to create a new file or update an existing one.
1248          *
1249          * In the case where 'watch edits' is off but 'watch creations' is on,
1250          * we'll leave the box unchecked.
1251          *
1252          * Note that the page target can be changed *on the form*, so our check
1253          * state can get out of sync.
1254          */
1255         function watchCheck() {
1256                 global $wgUser;
1257                 if( $wgUser->getOption( 'watchdefault' ) ) {
1258                         // Watch all edits!
1259                         return true;
1260                 }
1261
1262                 $local = wfLocalFile( $this->mDesiredDestName );
1263                 if( $local && $local->exists() ) {
1264                         // We're uploading a new version of an existing file.
1265                         // No creation, so don't watch it if we're not already.
1266                         return $local->getTitle()->userIsWatching();
1267                 } else {
1268                         // New page should get watched if that's our option.
1269                         return $wgUser->getOption( 'watchcreations' );
1270                 }
1271         }
1272
1273         /**
1274          * Split a file into a base name and all dot-delimited 'extensions'
1275          * on the end. Some web server configurations will fall back to
1276          * earlier pseudo-'extensions' to determine type and execute
1277          * scripts, so the blacklist needs to check them all.
1278          *
1279          * @return array
1280          */
1281         function splitExtensions( $filename ) {
1282                 $bits = explode( '.', $filename );
1283                 $basename = array_shift( $bits );
1284                 return array( $basename, $bits );
1285         }
1286
1287         /**
1288          * Perform case-insensitive match against a list of file extensions.
1289          * Returns true if the extension is in the list.
1290          *
1291          * @param string $ext
1292          * @param array $list
1293          * @return bool
1294          */
1295         function checkFileExtension( $ext, $list ) {
1296                 return in_array( strtolower( $ext ), $list );
1297         }
1298
1299         /**
1300          * Perform case-insensitive match against a list of file extensions.
1301          * Returns true if any of the extensions are in the list.
1302          *
1303          * @param array $ext
1304          * @param array $list
1305          * @return bool
1306          */
1307         function checkFileExtensionList( $ext, $list ) {
1308                 foreach( $ext as $e ) {
1309                         if( in_array( strtolower( $e ), $list ) ) {
1310                                 return true;
1311                         }
1312                 }
1313                 return false;
1314         }
1315
1316         /**
1317          * Verifies that it's ok to include the uploaded file
1318          *
1319          * @param string $tmpfile the full path of the temporary file to verify
1320          * @param string $extension The filename extension that the file is to be served with
1321          * @return mixed true of the file is verified, a WikiError object otherwise.
1322          */
1323         function verify( $tmpfile, $extension ) {
1324                 #magically determine mime type
1325                 $magic = MimeMagic::singleton();
1326                 $mime = $magic->guessMimeType($tmpfile,false);
1327
1328                 #check mime type, if desired
1329                 global $wgVerifyMimeType;
1330                 if ($wgVerifyMimeType) {
1331
1332                   wfDebug ( "\n\nmime: <$mime> extension: <$extension>\n\n");
1333                         #check mime type against file extension
1334                         if( !$this->verifyExtension( $mime, $extension ) ) {
1335                                 return new WikiErrorMsg( 'uploadcorrupt' );
1336                         }
1337
1338                         #check mime type blacklist
1339                         global $wgMimeTypeBlacklist;
1340                         if( isset($wgMimeTypeBlacklist) && !is_null($wgMimeTypeBlacklist)
1341                                 && $this->checkFileExtension( $mime, $wgMimeTypeBlacklist ) ) {
1342                                 return new WikiErrorMsg( 'filetype-badmime', htmlspecialchars( $mime ) );
1343                         }
1344                 }
1345
1346                 #check for htmlish code and javascript
1347                 if( $this->detectScript ( $tmpfile, $mime, $extension ) ) {
1348                         return new WikiErrorMsg( 'uploadscripted' );
1349                 }
1350
1351                 /**
1352                 * Scan the uploaded file for viruses
1353                 */
1354                 $virus= $this->detectVirus($tmpfile);
1355                 if ( $virus ) {
1356                         return new WikiErrorMsg( 'uploadvirus', htmlspecialchars($virus) );
1357                 }
1358
1359                 wfDebug( __METHOD__.": all clear; passing.\n" );
1360                 return true;
1361         }
1362
1363         /**
1364          * Checks if the mime type of the uploaded file matches the file extension.
1365          *
1366          * @param string $mime the mime type of the uploaded file
1367          * @param string $extension The filename extension that the file is to be served with
1368          * @return bool
1369          */
1370         function verifyExtension( $mime, $extension ) {
1371                 $magic = MimeMagic::singleton();
1372
1373                 if ( ! $mime || $mime == 'unknown' || $mime == 'unknown/unknown' )
1374                         if ( ! $magic->isRecognizableExtension( $extension ) ) {
1375                                 wfDebug( __METHOD__.": passing file with unknown detected mime type; " .
1376                                         "unrecognized extension '$extension', can't verify\n" );
1377                                 return true;
1378                         } else {
1379                                 wfDebug( __METHOD__.": rejecting file with unknown detected mime type; ".
1380                                         "recognized extension '$extension', so probably invalid file\n" );
1381                                 return false;
1382                         }
1383
1384                 $match= $magic->isMatchingExtension($extension,$mime);
1385
1386                 if ($match===NULL) {
1387                         wfDebug( __METHOD__.": no file extension known for mime type $mime, passing file\n" );
1388                         return true;
1389                 } elseif ($match===true) {
1390                         wfDebug( __METHOD__.": mime type $mime matches extension $extension, passing file\n" );
1391
1392                         #TODO: if it's a bitmap, make sure PHP or ImageMagic resp. can handle it!
1393                         return true;
1394
1395                 } else {
1396                         wfDebug( __METHOD__.": mime type $mime mismatches file extension $extension, rejecting file\n" );
1397                         return false;
1398                 }
1399         }
1400
1401         /**
1402          * Heuristic for detecting files that *could* contain JavaScript instructions or
1403          * things that may look like HTML to a browser and are thus
1404          * potentially harmful. The present implementation will produce false positives in some situations.
1405          *
1406          * @param string $file Pathname to the temporary upload file
1407          * @param string $mime The mime type of the file
1408          * @param string $extension The extension of the file
1409          * @return bool true if the file contains something looking like embedded scripts
1410          */
1411         function detectScript($file, $mime, $extension) {
1412                 global $wgAllowTitlesInSVG;
1413
1414                 #ugly hack: for text files, always look at the entire file.
1415                 #For binarie field, just check the first K.
1416
1417                 if (strpos($mime,'text/')===0) $chunk = file_get_contents( $file );
1418                 else {
1419                         $fp = fopen( $file, 'rb' );
1420                         $chunk = fread( $fp, 1024 );
1421                         fclose( $fp );
1422                 }
1423
1424                 $chunk= strtolower( $chunk );
1425
1426                 if (!$chunk) return false;
1427
1428                 #decode from UTF-16 if needed (could be used for obfuscation).
1429                 if (substr($chunk,0,2)=="\xfe\xff") $enc= "UTF-16BE";
1430                 elseif (substr($chunk,0,2)=="\xff\xfe") $enc= "UTF-16LE";
1431                 else $enc= NULL;
1432
1433                 if ($enc) $chunk= iconv($enc,"ASCII//IGNORE",$chunk);
1434
1435                 $chunk= trim($chunk);
1436
1437                 #FIXME: convert from UTF-16 if necessarry!
1438
1439                 wfDebug("SpecialUpload::detectScript: checking for embedded scripts and HTML stuff\n");
1440
1441                 #check for HTML doctype
1442                 if (eregi("<!DOCTYPE *X?HTML",$chunk)) return true;
1443
1444                 /**
1445                 * Internet Explorer for Windows performs some really stupid file type
1446                 * autodetection which can cause it to interpret valid image files as HTML
1447                 * and potentially execute JavaScript, creating a cross-site scripting
1448                 * attack vectors.
1449                 *
1450                 * Apple's Safari browser also performs some unsafe file type autodetection
1451                 * which can cause legitimate files to be interpreted as HTML if the
1452                 * web server is not correctly configured to send the right content-type
1453                 * (or if you're really uploading plain text and octet streams!)
1454                 *
1455                 * Returns true if IE is likely to mistake the given file for HTML.
1456                 * Also returns true if Safari would mistake the given file for HTML
1457                 * when served with a generic content-type.
1458                 */
1459
1460                 $tags = array(
1461                         '<body',
1462                         '<head',
1463                         '<html',   #also in safari
1464                         '<img',
1465                         '<pre',
1466                         '<script', #also in safari
1467                         '<table'
1468                         );
1469                 if( ! $wgAllowTitlesInSVG && $extension !== 'svg' && $mime !== 'image/svg' ) {
1470                         $tags[] = '<title';
1471                 }
1472
1473                 foreach( $tags as $tag ) {
1474                         if( false !== strpos( $chunk, $tag ) ) {
1475                                 return true;
1476                         }
1477                 }
1478
1479                 /*
1480                 * look for javascript
1481                 */
1482
1483                 #resolve entity-refs to look at attributes. may be harsh on big files... cache result?
1484                 $chunk = Sanitizer::decodeCharReferences( $chunk );
1485
1486                 #look for script-types
1487                 if (preg_match('!type\s*=\s*[\'"]?\s*(?:\w*/)?(?:ecma|java)!sim',$chunk)) return true;
1488
1489                 #look for html-style script-urls
1490                 if (preg_match('!(?:href|src|data)\s*=\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1491
1492                 #look for css-style script-urls
1493                 if (preg_match('!url\s*\(\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1494
1495                 wfDebug("SpecialUpload::detectScript: no scripts found\n");
1496                 return false;
1497         }
1498
1499         /**
1500          * Generic wrapper function for a virus scanner program.
1501          * This relies on the $wgAntivirus and $wgAntivirusSetup variables.
1502          * $wgAntivirusRequired may be used to deny upload if the scan fails.
1503          *
1504          * @param string $file Pathname to the temporary upload file
1505          * @return mixed false if not virus is found, NULL if the scan fails or is disabled,
1506          *         or a string containing feedback from the virus scanner if a virus was found.
1507          *         If textual feedback is missing but a virus was found, this function returns true.
1508          */
1509         function detectVirus($file) {
1510                 global $wgAntivirus, $wgAntivirusSetup, $wgAntivirusRequired, $wgOut;
1511
1512                 if ( !$wgAntivirus ) {
1513                         wfDebug( __METHOD__.": virus scanner disabled\n");
1514                         return NULL;
1515                 }
1516
1517                 if ( !$wgAntivirusSetup[$wgAntivirus] ) {
1518                         wfDebug( __METHOD__.": unknown virus scanner: $wgAntivirus\n" );
1519                         # @TODO: localise
1520                         $wgOut->addHTML( "<div class='error'>Bad configuration: unknown virus scanner: <i>$wgAntivirus</i></div>\n" );
1521                         return "unknown antivirus: $wgAntivirus";
1522                 }
1523
1524                 # look up scanner configuration
1525                 $command = $wgAntivirusSetup[$wgAntivirus]["command"];
1526                 $exitCodeMap = $wgAntivirusSetup[$wgAntivirus]["codemap"];
1527                 $msgPattern = isset( $wgAntivirusSetup[$wgAntivirus]["messagepattern"] ) ?
1528                         $wgAntivirusSetup[$wgAntivirus]["messagepattern"] : null;
1529
1530                 if ( strpos( $command,"%f" ) === false ) {
1531                         # simple pattern: append file to scan
1532                         $command .= " " . wfEscapeShellArg( $file );
1533                 } else {
1534                         # complex pattern: replace "%f" with file to scan
1535                         $command = str_replace( "%f", wfEscapeShellArg( $file ), $command );
1536                 }
1537
1538                 wfDebug( __METHOD__.": running virus scan: $command \n" );
1539
1540                 # execute virus scanner
1541                 $exitCode = false;
1542
1543                 #NOTE: there's a 50 line workaround to make stderr redirection work on windows, too.
1544                 #      that does not seem to be worth the pain.
1545                 #      Ask me (Duesentrieb) about it if it's ever needed.
1546                 $output = array();
1547                 if ( wfIsWindows() ) {
1548                         exec( "$command", $output, $exitCode );
1549                 } else {
1550                         exec( "$command 2>&1", $output, $exitCode );
1551                 }
1552
1553                 # map exit code to AV_xxx constants.
1554                 $mappedCode = $exitCode;
1555                 if ( $exitCodeMap ) {
1556                         if ( isset( $exitCodeMap[$exitCode] ) ) {
1557                                 $mappedCode = $exitCodeMap[$exitCode];
1558                         } elseif ( isset( $exitCodeMap["*"] ) ) {
1559                                 $mappedCode = $exitCodeMap["*"];
1560                         }
1561                 }
1562
1563                 if ( $mappedCode === AV_SCAN_FAILED ) {
1564                         # scan failed (code was mapped to false by $exitCodeMap)
1565                         wfDebug( __METHOD__.": failed to scan $file (code $exitCode).\n" );
1566
1567                         if ( $wgAntivirusRequired ) {
1568                                 return "scan failed (code $exitCode)";
1569                         } else {
1570                                 return NULL;
1571                         }
1572                 } else if ( $mappedCode === AV_SCAN_ABORTED ) {
1573                         # scan failed because filetype is unknown (probably imune)
1574                         wfDebug( __METHOD__.": unsupported file type $file (code $exitCode).\n" );
1575                         return NULL;
1576                 } else if ( $mappedCode === AV_NO_VIRUS ) {
1577                         # no virus found
1578                         wfDebug( __METHOD__.": file passed virus scan.\n" );
1579                         return false;
1580                 } else {
1581                         $output = join( "\n", $output );
1582                         $output = trim( $output );
1583
1584                         if ( !$output ) {
1585                                 $output = true; #if there's no output, return true
1586                         } elseif ( $msgPattern ) {
1587                                 $groups = array();
1588                                 if ( preg_match( $msgPattern, $output, $groups ) ) {
1589                                         if ( $groups[1] ) {
1590                                                 $output = $groups[1];
1591                                         }
1592                                 }
1593                         }
1594
1595                         wfDebug( __METHOD__.": FOUND VIRUS! scanner feedback: $output" );
1596                         return $output;
1597                 }
1598         }
1599
1600         /**
1601          * Check if the temporary file is MacBinary-encoded, as some uploads
1602          * from Internet Explorer on Mac OS Classic and Mac OS X will be.
1603          * If so, the data fork will be extracted to a second temporary file,
1604          * which will then be checked for validity and either kept or discarded.
1605          *
1606          * @access private
1607          */
1608         function checkMacBinary() {
1609                 $macbin = new MacBinary( $this->mTempPath );
1610                 if( $macbin->isValid() ) {
1611                         $dataFile = tempnam( wfTempDir(), "WikiMacBinary" );
1612                         $dataHandle = fopen( $dataFile, 'wb' );
1613
1614                         wfDebug( "SpecialUpload::checkMacBinary: Extracting MacBinary data fork to $dataFile\n" );
1615                         $macbin->extractData( $dataHandle );
1616
1617                         $this->mTempPath = $dataFile;
1618                         $this->mFileSize = $macbin->dataForkLength();
1619
1620                         // We'll have to manually remove the new file if it's not kept.
1621                         $this->mRemoveTempFile = true;
1622                 }
1623                 $macbin->close();
1624         }
1625
1626         /**
1627          * If we've modified the upload file we need to manually remove it
1628          * on exit to clean up.
1629          * @access private
1630          */
1631         function cleanupTempFile() {
1632                 if ( $this->mRemoveTempFile && file_exists( $this->mTempPath ) ) {
1633                         wfDebug( "SpecialUpload::cleanupTempFile: Removing temporary file {$this->mTempPath}\n" );
1634                         unlink( $this->mTempPath );
1635                 }
1636         }
1637
1638         /**
1639          * Check if there's an overwrite conflict and, if so, if restrictions
1640          * forbid this user from performing the upload.
1641          *
1642          * @return mixed true on success, WikiError on failure
1643          * @access private
1644          */
1645         function checkOverwrite( $name ) {
1646                 $img = wfFindFile( $name );
1647
1648                 $error = '';
1649                 if( $img ) {
1650                         global $wgUser, $wgOut;
1651                         if( $img->isLocal() ) {
1652                                 if( !self::userCanReUpload( $wgUser, $img->name ) ) {
1653                                         $error = 'fileexists-forbidden';
1654                                 }
1655                         } else {
1656                                 if( !$wgUser->isAllowed( 'reupload' ) ||
1657                                     !$wgUser->isAllowed( 'reupload-shared' ) ) {
1658                                         $error = "fileexists-shared-forbidden";
1659                                 }
1660                         }
1661                 }
1662
1663                 if( $error ) {
1664                         $errorText = wfMsg( $error, wfEscapeWikiText( $img->getName() ) );
1665                         return $errorText;
1666                 }
1667
1668                 // Rockin', go ahead and upload
1669                 return true;
1670         }
1671
1672          /**
1673          * Check if a user is the last uploader
1674          *
1675          * @param User $user
1676          * @param string $img, image name
1677          * @return bool
1678          */
1679         public static function userCanReUpload( User $user, $img ) {
1680                 if( $user->isAllowed( 'reupload' ) )
1681                         return true; // non-conditional
1682                 if( !$user->isAllowed( 'reupload-own' ) )
1683                         return false;
1684
1685                 $dbr = wfGetDB( DB_SLAVE );
1686                 $row = $dbr->selectRow('image',
1687                 /* SELECT */ 'img_user',
1688                 /* WHERE */ array( 'img_name' => $img )
1689                 );
1690                 if ( !$row )
1691                         return false;
1692
1693                 return $user->getId() == $row->img_user;
1694         }
1695
1696         /**
1697          * Display an error with a wikitext description
1698          */
1699         function showError( $description ) {
1700                 global $wgOut;
1701                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
1702                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1703                 $wgOut->setArticleRelated( false );
1704                 $wgOut->enableClientCache( false );
1705                 $wgOut->addWikiText( $description );
1706         }
1707
1708         /**
1709          * Get the initial image page text based on a comment and optional file status information
1710          */
1711         static function getInitialPageText( $comment, $license, $copyStatus, $source ) {
1712                 global $wgUseCopyrightUpload;
1713                 if ( $wgUseCopyrightUpload ) {
1714                         if ( $license != '' ) {
1715                                 $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1716                         }
1717                         $pageText = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n" .
1718                           '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
1719                           "$licensetxt" .
1720                           '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
1721                 } else {
1722                         if ( $license != '' ) {
1723                                 $filedesc = $comment == '' ? '' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n";
1724                                  $pageText = $filedesc .
1725                                          '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1726                         } else {
1727                                 $pageText = $comment;
1728                         }
1729                 }
1730                 return $pageText;
1731         }
1732
1733         /**
1734          * If there are rows in the deletion log for this file, show them,
1735          * along with a nice little note for the user
1736          *
1737          * @param OutputPage $out
1738          * @param string filename
1739          */
1740         private function showDeletionLog( $out, $filename ) {
1741                 global $wgUser;
1742                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
1743                 $pager = new LogPager( $loglist, 'delete', false, $filename );
1744                 if( $pager->getNumRows() > 0 ) {
1745                         $out->addHtml( '<div id="mw-upload-deleted-warn">' );
1746                         $out->addWikiMsg( 'upload-wasdeleted' );
1747                         $out->addHTML(
1748                                 $loglist->beginLogEventsList() .
1749                                 $pager->getBody() .
1750                                 $loglist->endLogEventsList()
1751                         );
1752                         $out->addHtml( '</div>' );
1753                 }
1754         }
1755 }