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 /**
  28  * @ingroup API
  29  */
  30 class ApiUpload extends ApiBase {
  31
  32         /**
  33          * @var UploadBase
  34          */
  35         protected $mUpload = null;
  36
  37         protected $mParams;
  38
  39         public function __construct( $main, $action ) {
  40                 parent::__construct( $main, $action );
  41         }
  42
  43         public function execute() {
  44                 // Check whether upload is enabled
  45                 if ( !UploadBase::isEnabled() ) {
  46                         $this->dieUsageMsg( 'uploaddisabled' );
  47                 }
  48
  49                 $user = $this->getUser();
  50
  51                 // Parameter handling
  52                 $this->mParams = $this->extractRequestParams();
  53                 $request = $this->getMain()->getRequest();
  54                 // Add the uploaded file to the params array
  55                 $this->mParams['file'] = $request->getFileName( 'file' );
  56                 $this->mParams['chunk'] = $request->getFileName( 'chunk' );
  57
  58                 // Copy the session key to the file key, for backward compatibility.
  59                 if( !$this->mParams['filekey'] && $this->mParams['sessionkey'] ) {
  60                         $this->mParams['filekey'] = $this->mParams['sessionkey'];
  61                 }
  62
  63                 // Select an upload module
  64                 if ( !$this->selectUploadModule() ) {
  65                         // This is not a true upload, but a status request or similar
  66                         return;
  67                 }
  68                 if ( !isset( $this->mUpload ) ) {
  69                         $this->dieUsage( 'No upload module set', 'nomodule' );
  70                 }
  71
  72                 // First check permission to upload
  73                 $this->checkPermissions( $user );
  74
  75                 // Fetch the file
  76                 $status = $this->mUpload->fetchFile();
  77                 if ( !$status->isGood() ) {
  78                         $errors = $status->getErrorsArray();
  79                         $error = array_shift( $errors[0] );
  80                         $this->dieUsage( 'Error fetching file from remote source', $error, 0, $errors[0] );
  81                 }
  82
  83                 // Check if the uploaded file is sane
  84                 if ( $this->mParams['chunk'] ) {
  85                         $maxSize = $this->mUpload->getMaxUploadSize( );
  86                         if( $this->mParams['filesize'] > $maxSize ) {
  87                                 $this->dieUsage( 'The file you submitted was too large', 'file-too-large' );
  88                         }
  89                 } else {
  90                         $this->verifyUpload();
  91                 }
  92
  93                 // Check if the user has the rights to modify or overwrite the requested title
  94                 // (This check is irrelevant if stashing is already requested, since the errors
  95                 //  can always be fixed by changing the title)
  96                 if ( ! $this->mParams['stash'] ) {
  97                         $permErrors = $this->mUpload->verifyTitlePermissions( $user );
  98                         if ( $permErrors !== true ) {
  99                                 $this->dieRecoverableError( $permErrors[0], 'filename' );
 100                         }
 101                 }
 102                 // Get the result based on the current upload context:
 103                 $result = $this->getContextResult();
 104
 105                 if ( $result['result'] === 'Success' ) {
 106                         $result['imageinfo'] = $this->mUpload->getImageInfo( $this->getResult() );
 107                 }
 108
 109                 $this->getResult()->addValue( null, $this->getModuleName(), $result );
 110
 111                 // Cleanup any temporary mess
 112                 $this->mUpload->cleanupTempFile();
 113         }
 114         /**
 115          * Get an uplaod result based on upload context
 116          */
 117         private function getContextResult(){
 118                 $warnings = $this->getApiWarnings();
 119                 if ( $warnings ) {
 120                         // Get warnings formated in result array format
 121                         return $this->getWarningsResult( $warnings );
 122                 } elseif ( $this->mParams['chunk'] ) {
 123                         // Add chunk, and get result
 124                         return $this->getChunkResult();
 125                 } elseif ( $this->mParams['stash'] ) {
 126                         // Stash the file and get stash result
 127                         return $this->getStashResult();
 128                 }
 129                 // This is the most common case -- a normal upload with no warnings
 130                 // performUpload will return a formatted properly for the API with status
 131                 return $this->performUpload();
 132         }
 133         /**
 134          * Get Stash Result, throws an expetion if the file could not be stashed.
 135          */
 136         private function getStashResult(){
 137                 $result = array ();
 138                 // Some uploads can request they be stashed, so as not to publish them immediately.
 139                 // In this case, a failure to stash ought to be fatal
 140                 try {
 141                         $result['result'] = 'Success';
 142                         $result['filekey'] = $this->performStash();
 143                         $result['sessionkey'] = $result['filekey']; // backwards compatibility
 144                 } catch ( MWException $e ) {
 145                         $this->dieUsage( $e->getMessage(), 'stashfailed' );
 146                 }
 147                 return $result;
 148         }
 149         /**
 150          * Get Warnings Result
 151          * @param $warnings Array of Api upload warnings
 152          */
 153         private function getWarningsResult( $warnings ){
 154                 $result = array();
 155                 $result['result'] = 'Warning';
 156                 $result['warnings'] = $warnings;
 157                 // in case the warnings can be fixed with some further user action, let's stash this upload
 158                 // and return a key they can use to restart it
 159                 try {
 160                         $result['filekey'] = $this->performStash();
 161                         $result['sessionkey'] = $result['filekey']; // backwards compatibility
 162                 } catch ( MWException $e ) {
 163                         $result['warnings']['stashfailed'] = $e->getMessage();
 164                 }
 165                 return $result;
 166         }
 167         /**
 168          * Get the result of a chunk upload.
 169          */
 170         private function getChunkResult(){
 171                 $result = array();
 172
 173                 $result['result'] = 'Continue';
 174                 $request = $this->getMain()->getRequest();
 175                 $chunkPath = $request->getFileTempname( 'chunk' );
 176                 $chunkSize = $request->getUpload( 'chunk' )->getSize();
 177                 if ($this->mParams['offset'] == 0) {
 178                         $result['filekey'] = $this->performStash();
 179                 } else {
 180                         $status = $this->mUpload->addChunk($chunkPath, $chunkSize,
 181                                                                                 $this->mParams['offset']);
 182                         if ( !$status->isGood() ) {
 183                                 $this->dieUsage( $status->getWikiText(), 'stashfailed' );
 184                                 return ;
 185                         }
 186                         $result['filekey'] = $this->mParams['filekey'];
 187                         // Check we added the last chunk:
 188                         if( $this->mParams['offset'] + $chunkSize == $this->mParams['filesize'] ) {
 189                                 $status = $this->mUpload->concatenateChunks();
 190                                 if ( !$status->isGood() ) {
 191                                         $this->dieUsage( $status->getWikiText(), 'stashfailed' );
 192                                         return ;
 193                                 }
 194                                 $result['result'] = 'Success';
 195                         }
 196                 }
 197                 $result['offset'] = $this->mParams['offset'] + $chunkSize;
 198                 return $result;
 199         }
 200
 201         /**
 202          * Stash the file and return the file key
 203          * Also re-raises exceptions with slightly more informative message strings (useful for API)
 204          * @throws MWException
 205          * @return String file key
 206          */
 207         function performStash() {
 208                 try {
 209                         $stashFile = $this->mUpload->stashFile();
 210
 211                         if ( !$stashFile ) {
 212                                 throw new MWException( 'Invalid stashed file' );
 213                         }
 214                         $fileKey = $stashFile->getFileKey();
 215                 } catch ( MWException $e ) {
 216                         $message = 'Stashing temporary file failed: ' . get_class( $e ) . ' ' . $e->getMessage();
 217                         wfDebug( __METHOD__ . ' ' . $message . "\n");
 218                         throw new MWException( $message );
 219                 }
 220                 return $fileKey;
 221         }
 222
 223         /**
 224          * Throw an error that the user can recover from by providing a better
 225          * value for $parameter
 226          *
 227          * @param $error array Error array suitable for passing to dieUsageMsg()
 228          * @param $parameter string Parameter that needs revising
 229          * @param $data array Optional extra data to pass to the user
 230          * @throws UsageException
 231          */
 232         function dieRecoverableError( $error, $parameter, $data = array() ) {
 233                 try {
 234                         $data['filekey'] = $this->performStash();
 235                         $data['sessionkey'] = $data['filekey'];
 236                 } catch ( MWException $e ) {
 237                         $data['stashfailed'] = $e->getMessage();
 238                 }
 239                 $data['invalidparameter'] = $parameter;
 240
 241                 $parsed = $this->parseMsg( $error );
 242                 $this->dieUsage( $parsed['info'], $parsed['code'], 0, $data );
 243         }
 244
 245         /**
 246          * Select an upload module and set it to mUpload. Dies on failure. If the
 247          * request was a status request and not a true upload, returns false;
 248          * otherwise true
 249          *
 250          * @return bool
 251          */
 252         protected function selectUploadModule() {
 253                 $request = $this->getMain()->getRequest();
 254
 255                 // chunk or one and only one of the following parameters is needed
 256                 if( !$this->mParams['chunk'] ) {
 257                         $this->requireOnlyOneParameter( $this->mParams,
 258                                 'filekey', 'file', 'url', 'statuskey' );
 259                 }
 260
 261                 if ( $this->mParams['statuskey'] ) {
 262                         $this->checkAsyncDownloadEnabled();
 263
 264                         // Status request for an async upload
 265                         $sessionData = UploadFromUrlJob::getSessionData( $this->mParams['statuskey'] );
 266                         if ( !isset( $sessionData['result'] ) ) {
 267                                 $this->dieUsage( 'No result in session data', 'missingresult' );
 268                         }
 269                         if ( $sessionData['result'] == 'Warning' ) {
 270                                 $sessionData['warnings'] = $this->transformWarnings( $sessionData['warnings'] );
 271                                 $sessionData['sessionkey'] = $this->mParams['statuskey'];
 272                         }
 273                         $this->getResult()->addValue( null, $this->getModuleName(), $sessionData );
 274                         return false;
 275
 276                 }
 277
 278                 // The following modules all require the filename parameter to be set
 279                 if ( is_null( $this->mParams['filename'] ) ) {
 280                         $this->dieUsageMsg( array( 'missingparam', 'filename' ) );
 281                 }
 282
 283                 if ( $this->mParams['chunk'] ) {
 284                         // Chunk upload
 285                         $this->mUpload = new UploadFromChunks();
 286                         if( isset( $this->mParams['filekey'] ) ){
 287                                 // handle new chunk
 288                                 $this->mUpload->continueChunks(
 289                                         $this->mParams['filename'],
 290                                         $this->mParams['filekey'],
 291                                         $request->getUpload( 'chunk' )
 292                                 );
 293                         } else {
 294                                 // handle first chunk
 295                                 $this->mUpload->initialize(
 296                                         $this->mParams['filename'],
 297                                         $request->getUpload( 'chunk' )
 298                                 );
 299                         }
 300                 } elseif ( isset( $this->mParams['filekey'] ) ) {
 301                         // Upload stashed in a previous request
 302                         if ( !UploadFromStash::isValidKey( $this->mParams['filekey'] ) ) {
 303                                 $this->dieUsageMsg( 'invalid-file-key' );
 304                         }
 305
 306                         $this->mUpload = new UploadFromStash( $this->getUser() );
 307
 308                         $this->mUpload->initialize( $this->mParams['filekey'], $this->mParams['filename'] );
 309                 } elseif ( isset( $this->mParams['file'] ) ) {
 310                         $this->mUpload = new UploadFromFile();
 311                         $this->mUpload->initialize(
 312                                 $this->mParams['filename'],
 313                                 $request->getUpload( 'file' )
 314                         );
 315                 } elseif ( isset( $this->mParams['url'] ) ) {
 316                         // Make sure upload by URL is enabled:
 317                         if ( !UploadFromUrl::isEnabled() ) {
 318                                 $this->dieUsageMsg( 'copyuploaddisabled' );
 319                         }
 320
 321                         $async = false;
 322                         if ( $this->mParams['asyncdownload'] ) {
 323                                 $this->checkAsyncDownloadEnabled();
 324
 325                                 if ( $this->mParams['leavemessage'] && !$this->mParams['ignorewarnings'] ) {
 326                                         $this->dieUsage( 'Using leavemessage without ignorewarnings is not supported',
 327                                                 'missing-ignorewarnings' );
 328                                 }
 329
 330                                 if ( $this->mParams['leavemessage'] ) {
 331                                         $async = 'async-leavemessage';
 332                                 } else {
 333                                         $async = 'async';
 334                                 }
 335                         }
 336                         $this->mUpload = new UploadFromUrl;
 337                         $this->mUpload->initialize( $this->mParams['filename'],
 338                                 $this->mParams['url'], $async );
 339
 340                 }
 341
 342                 return true;
 343         }
 344
 345         /**
 346          * Checks that the user has permissions to perform this upload.
 347          * Dies with usage message on inadequate permissions.
 348          * @param $user User The user to check.
 349          */
 350         protected function checkPermissions( $user ) {
 351                 // Check whether the user has the appropriate permissions to upload anyway
 352                 $permission = $this->mUpload->isAllowed( $user );
 353
 354                 if ( $permission !== true ) {
 355                         if ( !$user->isLoggedIn() ) {
 356                                 $this->dieUsageMsg( array( 'mustbeloggedin', 'upload' ) );
 357                         } else {
 358                                 $this->dieUsageMsg( 'badaccess-groups' );
 359                         }
 360                 }
 361         }
 362
 363         /**
 364          * Performs file verification, dies on error.
 365          */
 366         protected function verifyUpload( ) {
 367                 global $wgFileExtensions;
 368
 369                 $verification = $this->mUpload->verifyUpload( );
 370                 if ( $verification['status'] === UploadBase::OK ) {
 371                         return;
 372                 }
 373
 374                 // TODO: Move them to ApiBase's message map
 375                 switch( $verification['status'] ) {
 376                         // Recoverable errors
 377                         case UploadBase::MIN_LENGTH_PARTNAME:
 378                                 $this->dieRecoverableError( 'filename-tooshort', 'filename' );
 379                                 break;
 380                         case UploadBase::ILLEGAL_FILENAME:
 381                                 $this->dieRecoverableError( 'illegal-filename', 'filename',
 382                                                 array( 'filename' => $verification['filtered'] ) );
 383                                 break;
 384                         case UploadBase::FILENAME_TOO_LONG:
 385                                 $this->dieRecoverableError( 'filename-toolong', 'filename' );
 386                                 break;
 387                         case UploadBase::FILETYPE_MISSING:
 388                                 $this->dieRecoverableError( 'filetype-missing', 'filename' );
 389                                 break;
 390                         case UploadBase::WINDOWS_NONASCII_FILENAME:
 391                                 $this->dieRecoverableError( 'windows-nonascii-filename', 'filename' );
 392                                 break;
 393
 394                         // Unrecoverable errors
 395                         case UploadBase::EMPTY_FILE:
 396                                 $this->dieUsage( 'The file you submitted was empty', 'empty-file' );
 397                                 break;
 398                         case UploadBase::FILE_TOO_LARGE:
 399                                 $this->dieUsage( 'The file you submitted was too large', 'file-too-large' );
 400                                 break;
 401
 402                         case UploadBase::FILETYPE_BADTYPE:
 403                                 $this->dieUsage( 'This type of file is banned', 'filetype-banned',
 404                                                 0, array(
 405                                                         'filetype' => $verification['finalExt'],
 406                                                         'allowed' => $wgFileExtensions
 407                                                 ) );
 408                                 break;
 409                         case UploadBase::VERIFICATION_ERROR:
 410                                 $this->getResult()->setIndexedTagName( $verification['details'], 'detail' );
 411                                 $this->dieUsage( 'This file did not pass file verification', 'verification-error',
 412                                                 0, array( 'details' => $verification['details'] ) );
 413                                 break;
 414                         case UploadBase::HOOK_ABORTED:
 415                                 $this->dieUsage( "The modification you tried to make was aborted by an extension hook",
 416                                                 'hookaborted', 0, array( 'error' => $verification['error'] ) );
 417                                 break;
 418                         default:
 419                                 $this->dieUsage( 'An unknown error occurred', 'unknown-error',
 420                                                 0, array( 'code' =>  $verification['status'] ) );
 421                                 break;
 422                 }
 423         }
 424
 425
 426         /**
 427          * Check warnings if ignorewarnings is not set.
 428          * Returns a suitable array for inclusion into API results if there were warnings
 429          * Returns the empty array if there were no warnings
 430          *
 431          * @return array
 432          */
 433         protected function getApiWarnings() {
 434                 $warnings = array();
 435
 436                 if ( !$this->mParams['ignorewarnings'] ) {
 437                         $warnings = $this->mUpload->checkWarnings();
 438                 }
 439                 return $this->transformWarnings( $warnings );
 440         }
 441
 442         protected function transformWarnings( $warnings ) {
 443                 if ( $warnings ) {
 444                         // Add indices
 445                         $result = $this->getResult();
 446                         $result->setIndexedTagName( $warnings, 'warning' );
 447
 448                         if ( isset( $warnings['duplicate'] ) ) {
 449                                 $dupes = array();
 450                                 foreach ( $warnings['duplicate'] as $dupe ) {
 451                                         $dupes[] = $dupe->getName();
 452                                 }
 453                                 $result->setIndexedTagName( $dupes, 'duplicate' );
 454                                 $warnings['duplicate'] = $dupes;
 455                         }
 456
 457                         if ( isset( $warnings['exists'] ) ) {
 458                                 $warning = $warnings['exists'];
 459                                 unset( $warnings['exists'] );
 460                                 $warnings[$warning['warning']] = $warning['file']->getName();
 461                         }
 462                 }
 463                 return $warnings;
 464         }
 465
 466
 467         /**
 468          * Perform the actual upload. Returns a suitable result array on success;
 469          * dies on failure.
 470          *
 471          * @return array
 472          */
 473         protected function performUpload() {
 474                 // Use comment as initial page text by default
 475                 if ( is_null( $this->mParams['text'] ) ) {
 476                         $this->mParams['text'] = $this->mParams['comment'];
 477                 }
 478
 479                 $file = $this->mUpload->getLocalFile();
 480                 $watch = $this->getWatchlistValue( $this->mParams['watchlist'], $file->getTitle() );
 481
 482                 // Deprecated parameters
 483                 if ( $this->mParams['watch'] ) {
 484                         $watch = true;
 485                 }
 486
 487                 // No errors, no warnings: do the upload
 488                 $status = $this->mUpload->performUpload( $this->mParams['comment'],
 489                         $this->mParams['text'], $watch, $this->getUser() );
 490
 491                 if ( !$status->isGood() ) {
 492                         $error = $status->getErrorsArray();
 493
 494                         if ( count( $error ) == 1 && $error[0][0] == 'async' ) {
 495                                 // The upload can not be performed right now, because the user
 496                                 // requested so
 497                                 return array(
 498                                         'result' => 'Queued',
 499                                         'statuskey' => $error[0][1],
 500                                 );
 501                         } else {
 502                                 $this->getResult()->setIndexedTagName( $error, 'error' );
 503
 504                                 $this->dieUsage( 'An internal error occurred', 'internal-error', 0, $error );
 505                         }
 506                 }
 507
 508                 $file = $this->mUpload->getLocalFile();
 509
 510                 $result['result'] = 'Success';
 511                 $result['filename'] = $file->getName();
 512
 513                 return $result;
 514         }
 515
 516         /**
 517          * Checks if asynchronous copy uploads are enabled and throws an error if they are not.
 518          */
 519         protected function checkAsyncDownloadEnabled() {
 520                 global $wgAllowAsyncCopyUploads;
 521                 if ( !$wgAllowAsyncCopyUploads ) {
 522                         $this->dieUsage( 'Asynchronous copy uploads disabled', 'asynccopyuploaddisabled');
 523                 }
 524         }
 525
 526         public function mustBePosted() {
 527                 return true;
 528         }
 529
 530         public function isWriteMode() {
 531                 return true;
 532         }
 533
 534         public function getAllowedParams() {
 535                 $params = array(
 536                         'filename' => array(
 537                                 ApiBase::PARAM_TYPE => 'string',
 538                         ),
 539                         'comment' => array(
 540                                 ApiBase::PARAM_DFLT => ''
 541                         ),
 542                         'text' => null,
 543                         'token' => null,
 544                         'watch' => array(
 545                                 ApiBase::PARAM_DFLT => false,
 546                                 ApiBase::PARAM_DEPRECATED => true,
 547                         ),
 548                         'watchlist' => array(
 549                                 ApiBase::PARAM_DFLT => 'preferences',
 550                                 ApiBase::PARAM_TYPE => array(
 551                                         'watch',
 552                                         'preferences',
 553                                         'nochange'
 554                                 ),
 555                         ),
 556                         'ignorewarnings' => false,
 557                         'file' => null,
 558                         'url' => null,
 559                         'filekey' => null,
 560                         'sessionkey' => array(
 561                                 ApiBase::PARAM_DFLT => null,
 562                                 ApiBase::PARAM_DEPRECATED => true,
 563                         ),
 564                         'stash' => false,
 565
 566                         'filesize' => null,
 567                         'offset' => null,
 568                         'chunk' => null,
 569
 570                         'asyncdownload' => false,
 571                         'leavemessage' => false,
 572                         'statuskey' => null,
 573                 );
 574
 575                 return $params;
 576         }
 577
 578         public function getParamDescription() {
 579                 $params = array(
 580                         'filename' => 'Target filename',
 581                         'token' => 'Edit token. You can get one of these through prop=info',
 582                         'comment' => 'Upload comment. Also used as the initial page text for new files if "text" is not specified',
 583                         'text' => 'Initial page text for new files',
 584                         'watch' => 'Watch the page',
 585                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
 586                         'ignorewarnings' => 'Ignore any warnings',
 587                         'file' => 'File contents',
 588                         'url' => 'URL to fetch the file from',
 589                         'filekey' => 'Key that identifies a previous upload that was stashed temporarily.',
 590                         'sessionkey' => 'Same as filekey, maintained for backward compatibility.',
 591                         'stash' => 'If set, the server will not add the file to the repository and stash it temporarily.',
 592
 593                         'chunk' => 'Chunk contents',
 594                         'offset' => 'Offset of chunk in bytes',
 595                         'filesize' => 'Filesize of entire upload',
 596
 597                         'asyncdownload' => 'Make fetching a URL asynchronous',
 598                         'leavemessage' => 'If asyncdownload is used, leave a message on the user talk page if finished',
 599                         'statuskey' => 'Fetch the upload status for this file key',
 600                 );
 601
 602                 return $params;
 603
 604         }
 605
 606         public function getDescription() {
 607                 return array(
 608                         'Upload a file, or get the status of pending uploads. Several methods are available:',
 609                         ' * Upload file contents directly, using the "file" parameter',
 610                         ' * Have the MediaWiki server fetch a file from a URL, using the "url" parameter',
 611                         ' * Complete an earlier upload that failed due to warnings, using the "filekey" parameter',
 612                         'Note that the HTTP POST must be done as a file upload (i.e. using multipart/form-data) when',
 613                         'sending the "file".  Also you must get and send an edit token before doing any upload stuff'
 614                 );
 615         }
 616
 617         public function getPossibleErrors() {
 618                 return array_merge( parent::getPossibleErrors(),
 619                         $this->getRequireOnlyOneParameterErrorMessages( array( 'filekey', 'file', 'url', 'statuskey' ) ),
 620                         array(
 621                                 array( 'uploaddisabled' ),
 622                                 array( 'invalid-file-key' ),
 623                                 array( 'uploaddisabled' ),
 624                                 array( 'mustbeloggedin', 'upload' ),
 625                                 array( 'badaccess-groups' ),
 626                                 array( 'code' => 'fetchfileerror', 'info' => '' ),
 627                                 array( 'code' => 'nomodule', 'info' => 'No upload module set' ),
 628                                 array( 'code' => 'empty-file', 'info' => 'The file you submitted was empty' ),
 629                                 array( 'code' => 'filetype-missing', 'info' => 'The file is missing an extension' ),
 630                                 array( 'code' => 'filename-tooshort', 'info' => 'The filename is too short' ),
 631                                 array( 'code' => 'overwrite', 'info' => 'Overwriting an existing file is not allowed' ),
 632                                 array( 'code' => 'stashfailed', 'info' => 'Stashing temporary file failed' ),
 633                                 array( 'code' => 'internal-error', 'info' => 'An internal error occurred' ),
 634                                 array( 'code' => 'asynccopyuploaddisabled', 'info' => 'Asynchronous copy uploads disabled' ),
 635                         )
 636                 );
 637         }
 638
 639         public function needsToken() {
 640                 return true;
 641         }
 642
 643         public function getTokenSalt() {
 644                 return '';
 645         }
 646
 647         public function getExamples() {
 648                 return array(
 649                         'api.php?action=upload&filename=Wiki.png&url=http%3A//upload.wikimedia.org/wikipedia/en/b/bc/Wiki.png'
 650                                 => 'Upload from a URL',
 651                         'api.php?action=upload&filename=Wiki.png&filekey=filekey&ignorewarnings=1'
 652                                 => 'Complete an upload that failed due to warnings',
 653                 );
 654         }
 655
 656         public function getHelpUrls() {
 657                 return 'https://www.mediawiki.org/wiki/API:Upload';
 658         }
 659
 660         public function getVersion() {
 661                 return __CLASS__ . ': $Id$';
 662         }
 663 }