includes/api/ApiUpload.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Aug 21, 2008
   6  *
   7  * Copyright © 2008 - 2010 Bryan Tong Minh <Bryan.TongMinh@Gmail.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 if ( !defined( 'MEDIAWIKI' ) ) {
  28         // Eclipse helper - will be ignored in production
  29         require_once( "ApiBase.php" );
  30 }
  31
  32 /**
  33  * @ingroup API
  34  */
  35 class ApiUpload extends ApiBase {
  36
  37         /**
  38          * @var UploadBase
  39          */
  40         protected $mUpload = null;
  41
  42         protected $mParams;
  43
  44         public function __construct( $main, $action ) {
  45                 parent::__construct( $main, $action );
  46         }
  47
  48         public function execute() {
  49                 // Check whether upload is enabled
  50                 if ( !UploadBase::isEnabled() ) {
  51                         $this->dieUsageMsg( 'uploaddisabled' );
  52                 }
  53
  54                 $user = $this->getUser();
  55
  56                 // Parameter handling
  57                 $this->mParams = $this->extractRequestParams();
  58                 $request = $this->getMain()->getRequest();
  59                 // Add the uploaded file to the params array
  60                 $this->mParams['file'] = $request->getFileName( 'file' );
  61                 $this->mParams['chunk'] = $request->getFileName( 'chunk' );
  62
  63                 // Copy the session key to the file key, for backward compatibility.
  64                 if( !$this->mParams['filekey'] && $this->mParams['sessionkey'] ) {
  65                         $this->mParams['filekey'] = $this->mParams['sessionkey'];
  66                 }
  67
  68                 // Select an upload module
  69                 if ( !$this->selectUploadModule() ) {
  70                         // This is not a true upload, but a status request or similar
  71                         return;
  72                 }
  73                 if ( !isset( $this->mUpload ) ) {
  74                         $this->dieUsage( 'No upload module set', 'nomodule' );
  75                 }
  76
  77                 // First check permission to upload
  78                 $this->checkPermissions( $user );
  79
  80                 // Fetch the file
  81                 $status = $this->mUpload->fetchFile();
  82                 if ( !$status->isGood() ) {
  83                         $errors = $status->getErrorsArray();
  84                         $error = array_shift( $errors[0] );
  85                         $this->dieUsage( 'Error fetching file from remote source', $error, 0, $errors[0] );
  86                 }
  87
  88                 // Check if the uploaded file is sane
  89                 if ( $this->mParams['chunk'] ) {
  90                         $maxSize = $this->mUpload->getMaxUploadSize( );
  91                         if( $this->mParams['filesize'] > $maxSize ) {
  92                                 $this->dieUsage( 'The file you submitted was too large', 'file-too-large' );
  93                         }
  94                 } else {
  95                         $this->verifyUpload();
  96                 }
  97
  98
  99                 // Check if the user has the rights to modify or overwrite the requested title
 100                 // (This check is irrelevant if stashing is already requested, since the errors
 101                 //  can always be fixed by changing the title)
 102                 if ( ! $this->mParams['stash'] ) {
 103                         $permErrors = $this->mUpload->verifyTitlePermissions( $user );
 104                         if ( $permErrors !== true ) {
 105                                 $this->dieRecoverableError( $permErrors[0], 'filename' );
 106                         }
 107                 }
 108
 109                 // Prepare the API result
 110                 $result = array();
 111
 112                 $warnings = $this->getApiWarnings();
 113                 if ( $warnings ) {
 114                         $result['result'] = 'Warning';
 115                         $result['warnings'] = $warnings;
 116                         // in case the warnings can be fixed with some further user action, let's stash this upload
 117                         // and return a key they can use to restart it
 118                         try {
 119                                 $result['filekey'] = $this->performStash();
 120                                 $result['sessionkey'] = $result['filekey']; // backwards compatibility
 121                         } catch ( MWException $e ) {
 122                                 $result['warnings']['stashfailed'] = $e->getMessage();
 123                         }
 124                 } elseif ( $this->mParams['chunk'] ) {
 125                         $result['result'] = 'Continue';
 126                         $chunk = $request->getFileTempName( 'chunk' );
 127                         $chunkSize = $request->getUpload( 'chunk' )->getSize();
 128                         if ($this->mParams['offset'] == 0) {
 129                                 $result['filekey'] = $this->performStash();
 130                         } else {
 131                                 $status = $this->mUpload->appendChunk($chunk, $chunkSize,
 132                                                                                                           $this->mParams['offset']);
 133                                 if ( !$status->isGood() ) {
 134                                         $this->dieUsage( $status->getWikiText(), 'stashfailed' );
 135                                 } else {
 136                                         $result['filekey'] = $this->mParams['filekey'];
 137                                         if($this->mParams['offset'] + $chunkSize == $this->mParams['filesize']) {
 138                                                 $this->mUpload->finalizeFile();
 139                                                 $result['result'] = 'Success';
 140                                         }
 141                                 }
 142                         }
 143                         $result['offset'] = $this->mParams['offset'] + $chunkSize;
 144                 } elseif ( $this->mParams['stash'] ) {
 145                         // Some uploads can request they be stashed, so as not to publish them immediately.
 146                         // In this case, a failure to stash ought to be fatal
 147                         try {
 148                                 $result['result'] = 'Success';
 149                                 $result['filekey'] = $this->performStash();
 150                                 $result['sessionkey'] = $result['filekey']; // backwards compatibility
 151                         } catch ( MWException $e ) {
 152                                 $this->dieUsage( $e->getMessage(), 'stashfailed' );
 153                         }
 154                 } else {
 155                         // This is the most common case -- a normal upload with no warnings
 156                         // $result will be formatted properly for the API already, with a status
 157                         $result = $this->performUpload();
 158                 }
 159
 160                 if ( $result['result'] === 'Success' ) {
 161                         $result['imageinfo'] = $this->mUpload->getImageInfo( $this->getResult() );
 162                 }
 163
 164                 $this->getResult()->addValue( null, $this->getModuleName(), $result );
 165
 166                 // Cleanup any temporary mess
 167                 $this->mUpload->cleanupTempFile();
 168         }
 169
 170         /**
 171          * Stash the file and return the file key
 172          * Also re-raises exceptions with slightly more informative message strings (useful for API)
 173          * @throws MWException
 174          * @return String file key
 175          */
 176         function performStash() {
 177                 try {
 178                         $stashFile = $this->mUpload->stashFile();
 179
 180                         if ( !$stashFile ) {
 181                                 throw new MWException( 'Invalid stashed file' );
 182                         }
 183                         $fileKey = $stashFile->getFileKey();
 184                 } catch ( MWException $e ) {
 185                         $message = 'Stashing temporary file failed: ' . get_class( $e ) . ' ' . $e->getMessage();
 186                         wfDebug( __METHOD__ . ' ' . $message . "\n");
 187                         throw new MWException( $message );
 188                 }
 189                 return $fileKey;
 190         }
 191
 192         /**
 193          * Throw an error that the user can recover from by providing a better
 194          * value for $parameter
 195          *
 196          * @param $error array Error array suitable for passing to dieUsageMsg()
 197          * @param $parameter string Parameter that needs revising
 198          * @param $data array Optional extra data to pass to the user
 199          * @throws UsageException
 200          */
 201         function dieRecoverableError( $error, $parameter, $data = array() ) {
 202                 try {
 203                         $data['filekey'] = $this->performStash();
 204                         $data['sessionkey'] = $data['filekey'];
 205                 } catch ( MWException $e ) {
 206                         $data['stashfailed'] = $e->getMessage();
 207                 }
 208                 $data['invalidparameter'] = $parameter;
 209
 210                 $parsed = $this->parseMsg( $error );
 211                 $this->dieUsage( $parsed['info'], $parsed['code'], 0, $data );
 212         }
 213
 214         /**
 215          * Select an upload module and set it to mUpload. Dies on failure. If the
 216          * request was a status request and not a true upload, returns false;
 217          * otherwise true
 218          *
 219          * @return bool
 220          */
 221         protected function selectUploadModule() {
 222                 $request = $this->getMain()->getRequest();
 223
 224                 // chunk or one and only one of the following parameters is needed
 225                 if( !$this->mParams['chunk'] ) {
 226                         $this->requireOnlyOneParameter( $this->mParams,
 227                                 'filekey', 'file', 'url', 'statuskey' );
 228                 }
 229
 230                 if ( $this->mParams['statuskey'] ) {
 231                         $this->checkAsyncDownloadEnabled();
 232
 233                         // Status request for an async upload
 234                         $sessionData = UploadFromUrlJob::getSessionData( $this->mParams['statuskey'] );
 235                         if ( !isset( $sessionData['result'] ) ) {
 236                                 $this->dieUsage( 'No result in session data', 'missingresult' );
 237                         }
 238                         if ( $sessionData['result'] == 'Warning' ) {
 239                                 $sessionData['warnings'] = $this->transformWarnings( $sessionData['warnings'] );
 240                                 $sessionData['sessionkey'] = $this->mParams['statuskey'];
 241                         }
 242                         $this->getResult()->addValue( null, $this->getModuleName(), $sessionData );
 243                         return false;
 244
 245                 }
 246
 247                 // The following modules all require the filename parameter to be set
 248                 if ( is_null( $this->mParams['filename'] ) ) {
 249                         $this->dieUsageMsg( array( 'missingparam', 'filename' ) );
 250                 }
 251
 252                 if ( $this->mParams['filekey'] ) {
 253                         // Upload stashed in a previous request
 254                         if ( !UploadFromStash::isValidKey( $this->mParams['filekey'] ) ) {
 255                                 $this->dieUsageMsg( 'invalid-file-key' );
 256                         }
 257
 258                         $this->mUpload = new UploadFromStash( $this->getUser() );
 259
 260                         $this->mUpload->initialize( $this->mParams['filekey'], $this->mParams['filename'] );
 261
 262                 } elseif ( isset( $this->mParams['chunk'] ) ) {
 263                         // Start new Chunk upload
 264                         $this->mUpload = new UploadFromFile();
 265                         $this->mUpload->initialize(
 266                                 $this->mParams['filename'],
 267                                 $request->getUpload( 'chunk' )
 268                         );
 269                 } elseif ( isset( $this->mParams['file'] ) ) {
 270                         $this->mUpload = new UploadFromFile();
 271                         $this->mUpload->initialize(
 272                                 $this->mParams['filename'],
 273                                 $request->getUpload( 'file' )
 274                         );
 275                 } elseif ( isset( $this->mParams['url'] ) ) {
 276                         // Make sure upload by URL is enabled:
 277                         if ( !UploadFromUrl::isEnabled() ) {
 278                                 $this->dieUsageMsg( 'copyuploaddisabled' );
 279                         }
 280
 281                         $async = false;
 282                         if ( $this->mParams['asyncdownload'] ) {
 283                                 $this->checkAsyncDownloadEnabled();
 284
 285                                 if ( $this->mParams['leavemessage'] && !$this->mParams['ignorewarnings'] ) {
 286                                         $this->dieUsage( 'Using leavemessage without ignorewarnings is not supported',
 287                                                 'missing-ignorewarnings' );
 288                                 }
 289
 290                                 if ( $this->mParams['leavemessage'] ) {
 291                                         $async = 'async-leavemessage';
 292                                 } else {
 293                                         $async = 'async';
 294                                 }
 295                         }
 296                         $this->mUpload = new UploadFromUrl;
 297                         $this->mUpload->initialize( $this->mParams['filename'],
 298                                 $this->mParams['url'], $async );
 299
 300                 }
 301
 302                 return true;
 303         }
 304
 305         /**
 306          * Checks that the user has permissions to perform this upload.
 307          * Dies with usage message on inadequate permissions.
 308          * @param $user User The user to check.
 309          */
 310         protected function checkPermissions( $user ) {
 311                 // Check whether the user has the appropriate permissions to upload anyway
 312                 $permission = $this->mUpload->isAllowed( $user );
 313
 314                 if ( $permission !== true ) {
 315                         if ( !$user->isLoggedIn() ) {
 316                                 $this->dieUsageMsg( array( 'mustbeloggedin', 'upload' ) );
 317                         } else {
 318                                 $this->dieUsageMsg( 'badaccess-groups' );
 319                         }
 320                 }
 321         }
 322
 323         /**
 324          * Performs file verification, dies on error.
 325          */
 326         protected function verifyUpload( ) {
 327                 global $wgFileExtensions;
 328
 329                 $verification = $this->mUpload->verifyUpload( );
 330                 if ( $verification['status'] === UploadBase::OK ) {
 331                         return;
 332                 }
 333
 334                 // TODO: Move them to ApiBase's message map
 335                 switch( $verification['status'] ) {
 336                         // Recoverable errors
 337                         case UploadBase::MIN_LENGTH_PARTNAME:
 338                                 $this->dieRecoverableError( 'filename-tooshort', 'filename' );
 339                                 break;
 340                         case UploadBase::ILLEGAL_FILENAME:
 341                                 $this->dieRecoverableError( 'illegal-filename', 'filename',
 342                                                 array( 'filename' => $verification['filtered'] ) );
 343                                 break;
 344                         case UploadBase::FILENAME_TOO_LONG:
 345                                 $this->dieRecoverableError( 'filename-toolong', 'filename' );
 346                                 break;
 347                         case UploadBase::FILETYPE_MISSING:
 348                                 $this->dieRecoverableError( 'filetype-missing', 'filename' );
 349                                 break;
 350                         case UploadBase::WINDOWS_NONASCII_FILENAME:
 351                                 $this->dieRecoverableError( 'windows-nonascii-filename', 'filename' );
 352                                 break;
 353
 354                         // Unrecoverable errors
 355                         case UploadBase::EMPTY_FILE:
 356                                 $this->dieUsage( 'The file you submitted was empty', 'empty-file' );
 357                                 break;
 358                         case UploadBase::FILE_TOO_LARGE:
 359                                 $this->dieUsage( 'The file you submitted was too large', 'file-too-large' );
 360                                 break;
 361
 362                         case UploadBase::FILETYPE_BADTYPE:
 363                                 $this->dieUsage( 'This type of file is banned', 'filetype-banned',
 364                                                 0, array(
 365                                                         'filetype' => $verification['finalExt'],
 366                                                         'allowed' => $wgFileExtensions
 367                                                 ) );
 368                                 break;
 369                         case UploadBase::VERIFICATION_ERROR:
 370                                 $this->getResult()->setIndexedTagName( $verification['details'], 'detail' );
 371                                 $this->dieUsage( 'This file did not pass file verification', 'verification-error',
 372                                                 0, array( 'details' => $verification['details'] ) );
 373                                 break;
 374                         case UploadBase::HOOK_ABORTED:
 375                                 $this->dieUsage( "The modification you tried to make was aborted by an extension hook",
 376                                                 'hookaborted', 0, array( 'error' => $verification['error'] ) );
 377                                 break;
 378                         default:
 379                                 $this->dieUsage( 'An unknown error occurred', 'unknown-error',
 380                                                 0, array( 'code' =>  $verification['status'] ) );
 381                                 break;
 382                 }
 383         }
 384
 385
 386         /**
 387          * Check warnings if ignorewarnings is not set.
 388          * Returns a suitable array for inclusion into API results if there were warnings
 389          * Returns the empty array if there were no warnings
 390          *
 391          * @return array
 392          */
 393         protected function getApiWarnings() {
 394                 $warnings = array();
 395
 396                 if ( !$this->mParams['ignorewarnings'] ) {
 397                         $warnings = $this->mUpload->checkWarnings();
 398                 }
 399                 return $this->transformWarnings( $warnings );
 400         }
 401
 402         protected function transformWarnings( $warnings ) {
 403                 if ( $warnings ) {
 404                         // Add indices
 405                         $result = $this->getResult();
 406                         $result->setIndexedTagName( $warnings, 'warning' );
 407
 408                         if ( isset( $warnings['duplicate'] ) ) {
 409                                 $dupes = array();
 410                                 foreach ( $warnings['duplicate'] as $dupe ) {
 411                                         $dupes[] = $dupe->getName();
 412                                 }
 413                                 $result->setIndexedTagName( $dupes, 'duplicate' );
 414                                 $warnings['duplicate'] = $dupes;
 415                         }
 416
 417                         if ( isset( $warnings['exists'] ) ) {
 418                                 $warning = $warnings['exists'];
 419                                 unset( $warnings['exists'] );
 420                                 $warnings[$warning['warning']] = $warning['file']->getName();
 421                         }
 422                 }
 423                 return $warnings;
 424         }
 425
 426
 427         /**
 428          * Perform the actual upload. Returns a suitable result array on success;
 429          * dies on failure.
 430          *
 431          * @return array
 432          */
 433         protected function performUpload() {
 434                 // Use comment as initial page text by default
 435                 if ( is_null( $this->mParams['text'] ) ) {
 436                         $this->mParams['text'] = $this->mParams['comment'];
 437                 }
 438
 439                 $file = $this->mUpload->getLocalFile();
 440                 $watch = $this->getWatchlistValue( $this->mParams['watchlist'], $file->getTitle() );
 441
 442                 // Deprecated parameters
 443                 if ( $this->mParams['watch'] ) {
 444                         $watch = true;
 445                 }
 446
 447                 // No errors, no warnings: do the upload
 448                 $status = $this->mUpload->performUpload( $this->mParams['comment'],
 449                         $this->mParams['text'], $watch, $this->getUser() );
 450
 451                 if ( !$status->isGood() ) {
 452                         $error = $status->getErrorsArray();
 453
 454                         if ( count( $error ) == 1 && $error[0][0] == 'async' ) {
 455                                 // The upload can not be performed right now, because the user
 456                                 // requested so
 457                                 return array(
 458                                         'result' => 'Queued',
 459                                         'statuskey' => $error[0][1],
 460                                 );
 461                         } else {
 462                                 $this->getResult()->setIndexedTagName( $error, 'error' );
 463
 464                                 $this->dieUsage( 'An internal error occurred', 'internal-error', 0, $error );
 465                         }
 466                 }
 467
 468                 $file = $this->mUpload->getLocalFile();
 469
 470                 $result['result'] = 'Success';
 471                 $result['filename'] = $file->getName();
 472
 473                 return $result;
 474         }
 475
 476         /**
 477          * Checks if asynchronous copy uploads are enabled and throws an error if they are not.
 478          */
 479         protected function checkAsyncDownloadEnabled() {
 480                 global $wgAllowAsyncCopyUploads;
 481                 if ( !$wgAllowAsyncCopyUploads ) {
 482                         $this->dieUsage( 'Asynchronous copy uploads disabled', 'asynccopyuploaddisabled');
 483                 }
 484         }
 485
 486         public function mustBePosted() {
 487                 return true;
 488         }
 489
 490         public function isWriteMode() {
 491                 return true;
 492         }
 493
 494         public function getAllowedParams() {
 495                 $params = array(
 496                         'filename' => array(
 497                                 ApiBase::PARAM_TYPE => 'string',
 498                         ),
 499                         'comment' => array(
 500                                 ApiBase::PARAM_DFLT => ''
 501                         ),
 502                         'text' => null,
 503                         'token' => null,
 504                         'watch' => array(
 505                                 ApiBase::PARAM_DFLT => false,
 506                                 ApiBase::PARAM_DEPRECATED => true,
 507                         ),
 508                         'watchlist' => array(
 509                                 ApiBase::PARAM_DFLT => 'preferences',
 510                                 ApiBase::PARAM_TYPE => array(
 511                                         'watch',
 512                                         'preferences',
 513                                         'nochange'
 514                                 ),
 515                         ),
 516                         'ignorewarnings' => false,
 517                         'file' => null,
 518                         'url' => null,
 519                         'filekey' => null,
 520                         'sessionkey' => array(
 521                                 ApiBase::PARAM_DFLT => null,
 522                                 ApiBase::PARAM_DEPRECATED => true,
 523                         ),
 524                         'stash' => false,
 525
 526                         'filesize' => null,
 527                         'offset' => null,
 528                         'chunk' => null,
 529
 530                         'asyncdownload' => false,
 531                         'leavemessage' => false,
 532                         'statuskey' => null,
 533                 );
 534
 535                 return $params;
 536         }
 537
 538         public function getParamDescription() {
 539                 $params = array(
 540                         'filename' => 'Target filename',
 541                         'token' => 'Edit token. You can get one of these through prop=info',
 542                         'comment' => 'Upload comment. Also used as the initial page text for new files if "text" is not specified',
 543                         'text' => 'Initial page text for new files',
 544                         'watch' => 'Watch the page',
 545                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
 546                         'ignorewarnings' => 'Ignore any warnings',
 547                         'file' => 'File contents',
 548                         'url' => 'Url to fetch the file from',
 549                         'filekey' => 'Key that identifies a previous upload that was stashed temporarily.',
 550                         'sessionkey' => 'Same as filekey, maintained for backward compatibility.',
 551                         'stash' => 'If set, the server will not add the file to the repository and stash it temporarily.',
 552
 553                         'chunk' => 'Chunk contents',
 554                         'offset' => 'Offset of chunk in bytes',
 555                         'filesize' => 'Filesize of entire upload',
 556
 557                         'asyncdownload' => 'Make fetching a URL asynchronous',
 558                         'leavemessage' => 'If asyncdownload is used, leave a message on the user talk page if finished',
 559                         'statuskey' => 'Fetch the upload status for this file key',
 560                 );
 561
 562                 return $params;
 563
 564         }
 565
 566         public function getDescription() {
 567                 return array(
 568                         'Upload a file, or get the status of pending uploads. Several methods are available:',
 569                         ' * Upload file contents directly, using the "file" parameter',
 570                         ' * Have the MediaWiki server fetch a file from a URL, using the "url" parameter',
 571                         ' * Complete an earlier upload that failed due to warnings, using the "filekey" parameter',
 572                         'Note that the HTTP POST must be done as a file upload (i.e. using multipart/form-data) when',
 573                         'sending the "file".  Also you must get and send an edit token before doing any upload stuff'
 574                 );
 575         }
 576
 577         public function getPossibleErrors() {
 578                 return array_merge( parent::getPossibleErrors(),
 579                         $this->getRequireOnlyOneParameterErrorMessages( array( 'filekey', 'file', 'url', 'statuskey' ) ),
 580                         array(
 581                                 array( 'uploaddisabled' ),
 582                                 array( 'invalid-file-key' ),
 583                                 array( 'uploaddisabled' ),
 584                                 array( 'mustbeloggedin', 'upload' ),
 585                                 array( 'badaccess-groups' ),
 586                                 array( 'code' => 'fetchfileerror', 'info' => '' ),
 587                                 array( 'code' => 'nomodule', 'info' => 'No upload module set' ),
 588                                 array( 'code' => 'empty-file', 'info' => 'The file you submitted was empty' ),
 589                                 array( 'code' => 'filetype-missing', 'info' => 'The file is missing an extension' ),
 590                                 array( 'code' => 'filename-tooshort', 'info' => 'The filename is too short' ),
 591                                 array( 'code' => 'overwrite', 'info' => 'Overwriting an existing file is not allowed' ),
 592                                 array( 'code' => 'stashfailed', 'info' => 'Stashing temporary file failed' ),
 593                                 array( 'code' => 'internal-error', 'info' => 'An internal error occurred' ),
 594                                 array( 'code' => 'asynccopyuploaddisabled', 'info' => 'Asynchronous copy uploads disabled' ),
 595                         )
 596                 );
 597         }
 598
 599         public function needsToken() {
 600                 return true;
 601         }
 602
 603         public function getTokenSalt() {
 604                 return '';
 605         }
 606
 607         public function getExamples() {
 608                 return array(
 609                         'Upload from a URL:',
 610                         '    api.php?action=upload&filename=Wiki.png&url=http%3A//upload.wikimedia.org/wikipedia/en/b/bc/Wiki.png',
 611                         'Complete an upload that failed due to warnings:',
 612                         '    api.php?action=upload&filename=Wiki.png&filekey=filekey&ignorewarnings=1',
 613                 );
 614         }
 615
 616         public function getHelpUrls() {
 617                 return 'http://www.mediawiki.org/wiki/API:Upload';
 618         }
 619
 620         public function getVersion() {
 621                 return __CLASS__ . ': $Id$';
 622         }
 623 }