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 execute() {
  40                 global $wgEnableAsyncUploads;
  41
  42                 // Check whether upload is enabled
  43                 if ( !UploadBase::isEnabled() ) {
  44                         $this->dieUsageMsg( 'uploaddisabled' );
  45                 }
  46
  47                 $user = $this->getUser();
  48
  49                 // Parameter handling
  50                 $this->mParams = $this->extractRequestParams();
  51                 $request = $this->getMain()->getRequest();
  52                 // Check if async mode is actually supported (jobs done in cli mode)
  53                 $this->mParams['async'] = ( $this->mParams['async'] && $wgEnableAsyncUploads );
  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'] = $this->mParams['sessionkey'];
  61                 }
  62
  63                 // Select an upload module
  64                 try {
  65                         if ( !$this->selectUploadModule() ) {
  66                                 return; // not a true upload, but a status request or similar
  67                         } elseif ( !isset( $this->mUpload ) ) {
  68                                 $this->dieUsage( 'No upload module set', 'nomodule' );
  69                         }
  70                 } catch ( UploadStashException $e ) { // XXX: don't spam exception log
  71                         $this->dieUsage( get_class( $e ) . ": " . $e->getMessage(), 'stasherror' );
  72                 }
  73
  74                 // First check permission to upload
  75                 $this->checkPermissions( $user );
  76
  77                 // Fetch the file (usually a no-op)
  78                 /** @var $status Status */
  79                 $status = $this->mUpload->fetchFile();
  80                 if ( !$status->isGood() ) {
  81                         $errors = $status->getErrorsArray();
  82                         $error = array_shift( $errors[0] );
  83                         $this->dieUsage( 'Error fetching file from remote source', $error, 0, $errors[0] );
  84                 }
  85
  86                 // Check if the uploaded file is sane
  87                 if ( $this->mParams['chunk'] ) {
  88                         $maxSize = $this->mUpload->getMaxUploadSize();
  89                         if ( $this->mParams['filesize'] > $maxSize ) {
  90                                 $this->dieUsage( 'The file you submitted was too large', 'file-too-large' );
  91                         }
  92                         if ( !$this->mUpload->getTitle() ) {
  93                                 $this->dieUsage( 'Invalid file title supplied', 'internal-error' );
  94                         }
  95                 } elseif ( $this->mParams['async'] && $this->mParams['filekey'] ) {
  96                         // defer verification to background process
  97                 } else {
  98                         wfDebug( __METHOD__ . 'about to verify' );
  99                         $this->verifyUpload();
 100                 }
 101
 102                 // Check if the user has the rights to modify or overwrite the requested title
 103                 // (This check is irrelevant if stashing is already requested, since the errors
 104                 //  can always be fixed by changing the title)
 105                 if ( !$this->mParams['stash'] ) {
 106                         $permErrors = $this->mUpload->verifyTitlePermissions( $user );
 107                         if ( $permErrors !== true ) {
 108                                 $this->dieRecoverableError( $permErrors[0], 'filename' );
 109                         }
 110                 }
 111
 112                 // Get the result based on the current upload context:
 113                 try {
 114                         $result = $this->getContextResult();
 115                         if ( $result['result'] === 'Success' ) {
 116                                 $result['imageinfo'] = $this->mUpload->getImageInfo( $this->getResult() );
 117                         }
 118                 } catch ( UploadStashException $e ) { // XXX: don't spam exception log
 119                         $this->dieUsage( get_class( $e ) . ": " . $e->getMessage(), 'stasherror' );
 120                 }
 121
 122                 $this->getResult()->addValue( null, $this->getModuleName(), $result );
 123
 124                 // Cleanup any temporary mess
 125                 $this->mUpload->cleanupTempFile();
 126         }
 127
 128         /**
 129          * Get an upload result based on upload context
 130          * @return array
 131          */
 132         private function getContextResult() {
 133                 $warnings = $this->getApiWarnings();
 134                 if ( $warnings && !$this->mParams['ignorewarnings'] ) {
 135                         // Get warnings formatted in result array format
 136                         return $this->getWarningsResult( $warnings );
 137                 } elseif ( $this->mParams['chunk'] ) {
 138                         // Add chunk, and get result
 139                         return $this->getChunkResult( $warnings );
 140                 } elseif ( $this->mParams['stash'] ) {
 141                         // Stash the file and get stash result
 142                         return $this->getStashResult( $warnings );
 143                 }
 144                 // This is the most common case -- a normal upload with no warnings
 145                 // performUpload will return a formatted properly for the API with status
 146                 return $this->performUpload( $warnings );
 147         }
 148
 149         /**
 150          * Get Stash Result, throws an exception if the file could not be stashed.
 151          * @param array $warnings Array of Api upload warnings
 152          * @return array
 153          */
 154         private function getStashResult( $warnings ) {
 155                 $result = array();
 156                 // Some uploads can request they be stashed, so as not to publish them immediately.
 157                 // In this case, a failure to stash ought to be fatal
 158                 try {
 159                         $result['result'] = 'Success';
 160                         $result['filekey'] = $this->performStash();
 161                         $result['sessionkey'] = $result['filekey']; // backwards compatibility
 162                         if ( $warnings && count( $warnings ) > 0 ) {
 163                                 $result['warnings'] = $warnings;
 164                         }
 165                 } catch ( MWException $e ) {
 166                         $this->dieUsage( $e->getMessage(), 'stashfailed' );
 167                 }
 168                 return $result;
 169         }
 170
 171         /**
 172          * Get Warnings Result
 173          * @param array $warnings Array of Api upload warnings
 174          * @return array
 175          */
 176         private function getWarningsResult( $warnings ) {
 177                 $result = array();
 178                 $result['result'] = 'Warning';
 179                 $result['warnings'] = $warnings;
 180                 // in case the warnings can be fixed with some further user action, let's stash this upload
 181                 // and return a key they can use to restart it
 182                 try {
 183                         $result['filekey'] = $this->performStash();
 184                         $result['sessionkey'] = $result['filekey']; // backwards compatibility
 185                 } catch ( MWException $e ) {
 186                         $result['warnings']['stashfailed'] = $e->getMessage();
 187                 }
 188                 return $result;
 189         }
 190
 191         /**
 192          * Get the result of a chunk upload.
 193          * @param array $warnings Array of Api upload warnings
 194          * @return array
 195          */
 196         private function getChunkResult( $warnings ) {
 197                 $result = array();
 198
 199                 $result['result'] = 'Continue';
 200                 if ( $warnings && count( $warnings ) > 0 ) {
 201                         $result['warnings'] = $warnings;
 202                 }
 203                 $request = $this->getMain()->getRequest();
 204                 $chunkPath = $request->getFileTempname( 'chunk' );
 205                 $chunkSize = $request->getUpload( 'chunk' )->getSize();
 206                 if ( $this->mParams['offset'] == 0 ) {
 207                         try {
 208                                 $filekey = $this->performStash();
 209                         } catch ( MWException $e ) {
 210                                 // FIXME: Error handling here is wrong/different from rest of this
 211                                 $this->dieUsage( $e->getMessage(), 'stashfailed' );
 212                         }
 213                 } else {
 214                         $filekey = $this->mParams['filekey'];
 215                         /** @var $status Status */
 216                         $status = $this->mUpload->addChunk(
 217                                 $chunkPath, $chunkSize, $this->mParams['offset'] );
 218                         if ( !$status->isGood() ) {
 219                                 $this->dieUsage( $status->getWikiText(), 'stashfailed' );
 220                                 return array();
 221                         }
 222                 }
 223
 224                 // Check we added the last chunk:
 225                 if ( $this->mParams['offset'] + $chunkSize == $this->mParams['filesize'] ) {
 226                         if ( $this->mParams['async'] ) {
 227                                 $progress = UploadBase::getSessionStatus( $filekey );
 228                                 if ( $progress && $progress['result'] === 'Poll' ) {
 229                                         $this->dieUsage( "Chunk assembly already in progress.", 'stashfailed' );
 230                                 }
 231                                 UploadBase::setSessionStatus(
 232                                         $filekey,
 233                                         array( 'result' => 'Poll',
 234                                                 'stage' => 'queued', 'status' => Status::newGood() )
 235                                 );
 236                                 $ok = JobQueueGroup::singleton()->push( new AssembleUploadChunksJob(
 237                                         Title::makeTitle( NS_FILE, $filekey ),
 238                                         array(
 239                                                 'filename' => $this->mParams['filename'],
 240                                                 'filekey' => $filekey,
 241                                                 'session' => $this->getContext()->exportSession()
 242                                         )
 243                                 ) );
 244                                 if ( $ok ) {
 245                                         $result['result'] = 'Poll';
 246                                 } else {
 247                                         UploadBase::setSessionStatus( $filekey, false );
 248                                         $this->dieUsage(
 249                                                 "Failed to start AssembleUploadChunks.php", 'stashfailed' );
 250                                 }
 251                         } else {
 252                                 $status = $this->mUpload->concatenateChunks();
 253                                 if ( !$status->isGood() ) {
 254                                         $this->dieUsage( $status->getWikiText(), 'stashfailed' );
 255                                         return array();
 256                                 }
 257
 258                                 // The fully concatenated file has a new filekey. So remove
 259                                 // the old filekey and fetch the new one.
 260                                 $this->mUpload->stash->removeFile( $filekey );
 261                                 $filekey = $this->mUpload->getLocalFile()->getFileKey();
 262
 263                                 $result['result'] = 'Success';
 264                         }
 265                 }
 266                 $result['filekey'] = $filekey;
 267                 $result['offset'] = $this->mParams['offset'] + $chunkSize;
 268                 return $result;
 269         }
 270
 271         /**
 272          * Stash the file and return the file key
 273          * Also re-raises exceptions with slightly more informative message strings (useful for API)
 274          * @throws MWException
 275          * @return String file key
 276          */
 277         private function performStash() {
 278                 try {
 279                         $stashFile = $this->mUpload->stashFile();
 280
 281                         if ( !$stashFile ) {
 282                                 throw new MWException( 'Invalid stashed file' );
 283                         }
 284                         $fileKey = $stashFile->getFileKey();
 285                 } catch ( MWException $e ) {
 286                         $message = 'Stashing temporary file failed: ' . get_class( $e ) . ' ' . $e->getMessage();
 287                         wfDebug( __METHOD__ . ' ' . $message . "\n" );
 288                         throw new MWException( $message );
 289                 }
 290                 return $fileKey;
 291         }
 292
 293         /**
 294          * Throw an error that the user can recover from by providing a better
 295          * value for $parameter
 296          *
 297          * @param array $error Error array suitable for passing to dieUsageMsg()
 298          * @param string $parameter Parameter that needs revising
 299          * @param array $data Optional extra data to pass to the user
 300          * @throws UsageException
 301          */
 302         private function dieRecoverableError( $error, $parameter, $data = array() ) {
 303                 try {
 304                         $data['filekey'] = $this->performStash();
 305                         $data['sessionkey'] = $data['filekey'];
 306                 } catch ( MWException $e ) {
 307                         $data['stashfailed'] = $e->getMessage();
 308                 }
 309                 $data['invalidparameter'] = $parameter;
 310
 311                 $parsed = $this->parseMsg( $error );
 312                 $this->dieUsage( $parsed['info'], $parsed['code'], 0, $data );
 313         }
 314
 315         /**
 316          * Select an upload module and set it to mUpload. Dies on failure. If the
 317          * request was a status request and not a true upload, returns false;
 318          * otherwise true
 319          *
 320          * @return bool
 321          */
 322         protected function selectUploadModule() {
 323                 $request = $this->getMain()->getRequest();
 324
 325                 // chunk or one and only one of the following parameters is needed
 326                 if ( !$this->mParams['chunk'] ) {
 327                         $this->requireOnlyOneParameter( $this->mParams,
 328                                 'filekey', 'file', 'url', 'statuskey' );
 329                 }
 330
 331                 // Status report for "upload to stash"/"upload from stash"
 332                 if ( $this->mParams['filekey'] && $this->mParams['checkstatus'] ) {
 333                         $progress = UploadBase::getSessionStatus( $this->mParams['filekey'] );
 334                         if ( !$progress ) {
 335                                 $this->dieUsage( 'No result in status data', 'missingresult' );
 336                         } elseif ( !$progress['status']->isGood() ) {
 337                                 $this->dieUsage( $progress['status']->getWikiText(), 'stashfailed' );
 338                         }
 339                         if ( isset( $progress['status']->value['verification'] ) ) {
 340                                 $this->checkVerification( $progress['status']->value['verification'] );
 341                         }
 342                         unset( $progress['status'] ); // remove Status object
 343                         $this->getResult()->addValue( null, $this->getModuleName(), $progress );
 344                         return false;
 345                 }
 346
 347                 if ( $this->mParams['statuskey'] ) {
 348                         $this->checkAsyncDownloadEnabled();
 349
 350                         // Status request for an async upload
 351                         $sessionData = UploadFromUrlJob::getSessionData( $this->mParams['statuskey'] );
 352                         if ( !isset( $sessionData['result'] ) ) {
 353                                 $this->dieUsage( 'No result in session data', 'missingresult' );
 354                         }
 355                         if ( $sessionData['result'] == 'Warning' ) {
 356                                 $sessionData['warnings'] = $this->transformWarnings( $sessionData['warnings'] );
 357                                 $sessionData['sessionkey'] = $this->mParams['statuskey'];
 358                         }
 359                         $this->getResult()->addValue( null, $this->getModuleName(), $sessionData );
 360                         return false;
 361                 }
 362
 363                 // The following modules all require the filename parameter to be set
 364                 if ( is_null( $this->mParams['filename'] ) ) {
 365                         $this->dieUsageMsg( array( 'missingparam', 'filename' ) );
 366                 }
 367
 368                 if ( $this->mParams['chunk'] ) {
 369                         // Chunk upload
 370                         $this->mUpload = new UploadFromChunks();
 371                         if ( isset( $this->mParams['filekey'] ) ) {
 372                                 // handle new chunk
 373                                 $this->mUpload->continueChunks(
 374                                         $this->mParams['filename'],
 375                                         $this->mParams['filekey'],
 376                                         $request->getUpload( 'chunk' )
 377                                 );
 378                         } else {
 379                                 // handle first chunk
 380                                 $this->mUpload->initialize(
 381                                         $this->mParams['filename'],
 382                                         $request->getUpload( 'chunk' )
 383                                 );
 384                         }
 385                 } elseif ( isset( $this->mParams['filekey'] ) ) {
 386                         // Upload stashed in a previous request
 387                         if ( !UploadFromStash::isValidKey( $this->mParams['filekey'] ) ) {
 388                                 $this->dieUsageMsg( 'invalid-file-key' );
 389                         }
 390
 391                         $this->mUpload = new UploadFromStash( $this->getUser() );
 392                         // This will not download the temp file in initialize() in async mode.
 393                         // We still have enough information to call checkWarnings() and such.
 394                         $this->mUpload->initialize(
 395                                 $this->mParams['filekey'], $this->mParams['filename'], !$this->mParams['async']
 396                         );
 397                 } elseif ( isset( $this->mParams['file'] ) ) {
 398                         $this->mUpload = new UploadFromFile();
 399                         $this->mUpload->initialize(
 400                                 $this->mParams['filename'],
 401                                 $request->getUpload( 'file' )
 402                         );
 403                 } elseif ( isset( $this->mParams['url'] ) ) {
 404                         // Make sure upload by URL is enabled:
 405                         if ( !UploadFromUrl::isEnabled() ) {
 406                                 $this->dieUsageMsg( 'copyuploaddisabled' );
 407                         }
 408
 409                         if ( !UploadFromUrl::isAllowedHost( $this->mParams['url'] ) ) {
 410                                 $this->dieUsageMsg( 'copyuploadbaddomain' );
 411                         }
 412
 413                         if ( !UploadFromUrl::isAllowedUrl( $this->mParams['url'] ) ) {
 414                                 $this->dieUsageMsg( 'copyuploadbadurl' );
 415                         }
 416
 417                         $async = false;
 418                         if ( $this->mParams['asyncdownload'] ) {
 419                                 $this->checkAsyncDownloadEnabled();
 420
 421                                 if ( $this->mParams['leavemessage'] && !$this->mParams['ignorewarnings'] ) {
 422                                         $this->dieUsage( 'Using leavemessage without ignorewarnings is not supported',
 423                                                 'missing-ignorewarnings' );
 424                                 }
 425
 426                                 if ( $this->mParams['leavemessage'] ) {
 427                                         $async = 'async-leavemessage';
 428                                 } else {
 429                                         $async = 'async';
 430                                 }
 431                         }
 432                         $this->mUpload = new UploadFromUrl;
 433                         $this->mUpload->initialize( $this->mParams['filename'],
 434                                 $this->mParams['url'], $async );
 435                 }
 436
 437                 return true;
 438         }
 439
 440         /**
 441          * Checks that the user has permissions to perform this upload.
 442          * Dies with usage message on inadequate permissions.
 443          * @param $user User The user to check.
 444          */
 445         protected function checkPermissions( $user ) {
 446                 // Check whether the user has the appropriate permissions to upload anyway
 447                 $permission = $this->mUpload->isAllowed( $user );
 448
 449                 if ( $permission !== true ) {
 450                         if ( !$user->isLoggedIn() ) {
 451                                 $this->dieUsageMsg( array( 'mustbeloggedin', 'upload' ) );
 452                         } else {
 453                                 $this->dieUsageMsg( 'badaccess-groups' );
 454                         }
 455                 }
 456         }
 457
 458         /**
 459          * Performs file verification, dies on error.
 460          */
 461         protected function verifyUpload() {
 462                 $verification = $this->mUpload->verifyUpload();
 463                 if ( $verification['status'] === UploadBase::OK ) {
 464                         return;
 465                 }
 466
 467                 $this->checkVerification( $verification );
 468         }
 469
 470         /**
 471          * Performs file verification, dies on error.
 472          */
 473         protected function checkVerification( array $verification ) {
 474                 global $wgFileExtensions;
 475
 476                 // @todo Move them to ApiBase's message map
 477                 switch ( $verification['status'] ) {
 478                         // Recoverable errors
 479                         case UploadBase::MIN_LENGTH_PARTNAME:
 480                                 $this->dieRecoverableError( 'filename-tooshort', 'filename' );
 481                                 break;
 482                         case UploadBase::ILLEGAL_FILENAME:
 483                                 $this->dieRecoverableError( 'illegal-filename', 'filename',
 484                                                 array( 'filename' => $verification['filtered'] ) );
 485                                 break;
 486                         case UploadBase::FILENAME_TOO_LONG:
 487                                 $this->dieRecoverableError( 'filename-toolong', 'filename' );
 488                                 break;
 489                         case UploadBase::FILETYPE_MISSING:
 490                                 $this->dieRecoverableError( 'filetype-missing', 'filename' );
 491                                 break;
 492                         case UploadBase::WINDOWS_NONASCII_FILENAME:
 493                                 $this->dieRecoverableError( 'windows-nonascii-filename', 'filename' );
 494                                 break;
 495
 496                         // Unrecoverable errors
 497                         case UploadBase::EMPTY_FILE:
 498                                 $this->dieUsage( 'The file you submitted was empty', 'empty-file' );
 499                                 break;
 500                         case UploadBase::FILE_TOO_LARGE:
 501                                 $this->dieUsage( 'The file you submitted was too large', 'file-too-large' );
 502                                 break;
 503
 504                         case UploadBase::FILETYPE_BADTYPE:
 505                                 $extradata = array(
 506                                         'filetype' => $verification['finalExt'],
 507                                         'allowed' => $wgFileExtensions
 508                                 );
 509                                 $this->getResult()->setIndexedTagName( $extradata['allowed'], 'ext' );
 510
 511                                 $msg = "Filetype not permitted: ";
 512                                 if ( isset( $verification['blacklistedExt'] ) ) {
 513                                         $msg .= join( ', ', $verification['blacklistedExt'] );
 514                                         $extradata['blacklisted'] = array_values( $verification['blacklistedExt'] );
 515                                         $this->getResult()->setIndexedTagName( $extradata['blacklisted'], 'ext' );
 516                                 } else {
 517                                         $msg .= $verification['finalExt'];
 518                                 }
 519                                 $this->dieUsage( $msg, 'filetype-banned', 0, $extradata );
 520                                 break;
 521                         case UploadBase::VERIFICATION_ERROR:
 522                                 $this->getResult()->setIndexedTagName( $verification['details'], 'detail' );
 523                                 $this->dieUsage( 'This file did not pass file verification', 'verification-error',
 524                                                 0, array( 'details' => $verification['details'] ) );
 525                                 break;
 526                         case UploadBase::HOOK_ABORTED:
 527                                 $this->dieUsage( "The modification you tried to make was aborted by an extension hook",
 528                                                 'hookaborted', 0, array( 'error' => $verification['error'] ) );
 529                                 break;
 530                         default:
 531                                 $this->dieUsage( 'An unknown error occurred', 'unknown-error',
 532                                                 0, array( 'code' => $verification['status'] ) );
 533                                 break;
 534                 }
 535         }
 536
 537         /**
 538          * Check warnings.
 539          * Returns a suitable array for inclusion into API results if there were warnings
 540          * Returns the empty array if there were no warnings
 541          *
 542          * @return array
 543          */
 544         protected function getApiWarnings() {
 545                 $warnings = $this->mUpload->checkWarnings();
 546
 547                 return $this->transformWarnings( $warnings );
 548         }
 549
 550         protected function transformWarnings( $warnings ) {
 551                 if ( $warnings ) {
 552                         // Add indices
 553                         $result = $this->getResult();
 554                         $result->setIndexedTagName( $warnings, 'warning' );
 555
 556                         if ( isset( $warnings['duplicate'] ) ) {
 557                                 $dupes = array();
 558                                 foreach ( $warnings['duplicate'] as $dupe ) {
 559                                         $dupes[] = $dupe->getName();
 560                                 }
 561                                 $result->setIndexedTagName( $dupes, 'duplicate' );
 562                                 $warnings['duplicate'] = $dupes;
 563                         }
 564
 565                         if ( isset( $warnings['exists'] ) ) {
 566                                 $warning = $warnings['exists'];
 567                                 unset( $warnings['exists'] );
 568                                 $warnings[$warning['warning']] = $warning['file']->getName();
 569                         }
 570                 }
 571                 return $warnings;
 572         }
 573
 574         /**
 575          * Perform the actual upload. Returns a suitable result array on success;
 576          * dies on failure.
 577          *
 578          * @param array $warnings Array of Api upload warnings
 579          * @return array
 580          */
 581         protected function performUpload( $warnings ) {
 582                 // Use comment as initial page text by default
 583                 if ( is_null( $this->mParams['text'] ) ) {
 584                         $this->mParams['text'] = $this->mParams['comment'];
 585                 }
 586
 587                 /** @var $file File */
 588                 $file = $this->mUpload->getLocalFile();
 589                 $watch = $this->getWatchlistValue( $this->mParams['watchlist'], $file->getTitle() );
 590
 591                 // Deprecated parameters
 592                 if ( $this->mParams['watch'] ) {
 593                         $watch = true;
 594                 }
 595
 596                 // No errors, no warnings: do the upload
 597                 if ( $this->mParams['async'] ) {
 598                         $progress = UploadBase::getSessionStatus( $this->mParams['filekey'] );
 599                         if ( $progress && $progress['result'] === 'Poll' ) {
 600                                 $this->dieUsage( "Upload from stash already in progress.", 'publishfailed' );
 601                         }
 602                         UploadBase::setSessionStatus(
 603                                 $this->mParams['filekey'],
 604                                 array( 'result' => 'Poll', 'stage' => 'queued', 'status' => Status::newGood() )
 605                         );
 606                         $ok = JobQueueGroup::singleton()->push( new PublishStashedFileJob(
 607                                 Title::makeTitle( NS_FILE, $this->mParams['filename'] ),
 608                                 array(
 609                                         'filename' => $this->mParams['filename'],
 610                                         'filekey' => $this->mParams['filekey'],
 611                                         'comment' => $this->mParams['comment'],
 612                                         'text' => $this->mParams['text'],
 613                                         'watch' => $watch,
 614                                         'session' => $this->getContext()->exportSession()
 615                                 )
 616                         ) );
 617                         if ( $ok ) {
 618                                 $result['result'] = 'Poll';
 619                         } else {
 620                                 UploadBase::setSessionStatus( $this->mParams['filekey'], false );
 621                                 $this->dieUsage(
 622                                         "Failed to start PublishStashedFile.php", 'publishfailed' );
 623                         }
 624                 } else {
 625                         /** @var $status Status */
 626                         $status = $this->mUpload->performUpload( $this->mParams['comment'],
 627                                 $this->mParams['text'], $watch, $this->getUser() );
 628
 629                         if ( !$status->isGood() ) {
 630                                 $error = $status->getErrorsArray();
 631
 632                                 if ( count( $error ) == 1 && $error[0][0] == 'async' ) {
 633                                         // The upload can not be performed right now, because the user
 634                                         // requested so
 635                                         return array(
 636                                                 'result' => 'Queued',
 637                                                 'statuskey' => $error[0][1],
 638                                         );
 639                                 } else {
 640                                         $this->getResult()->setIndexedTagName( $error, 'error' );
 641
 642                                         $this->dieUsage( 'An internal error occurred', 'internal-error', 0, $error );
 643                                 }
 644                         }
 645                         $result['result'] = 'Success';
 646                 }
 647
 648                 $result['filename'] = $file->getName();
 649                 if ( $warnings && count( $warnings ) > 0 ) {
 650                         $result['warnings'] = $warnings;
 651                 }
 652
 653                 return $result;
 654         }
 655
 656         /**
 657          * Checks if asynchronous copy uploads are enabled and throws an error if they are not.
 658          */
 659         protected function checkAsyncDownloadEnabled() {
 660                 global $wgAllowAsyncCopyUploads;
 661                 if ( !$wgAllowAsyncCopyUploads ) {
 662                         $this->dieUsage( 'Asynchronous copy uploads disabled', 'asynccopyuploaddisabled' );
 663                 }
 664         }
 665
 666         public function mustBePosted() {
 667                 return true;
 668         }
 669
 670         public function isWriteMode() {
 671                 return true;
 672         }
 673
 674         public function getAllowedParams() {
 675                 $params = array(
 676                         'filename' => array(
 677                                 ApiBase::PARAM_TYPE => 'string',
 678                         ),
 679                         'comment' => array(
 680                                 ApiBase::PARAM_DFLT => ''
 681                         ),
 682                         'text' => null,
 683                         'token' => array(
 684                                 ApiBase::PARAM_TYPE => 'string',
 685                                 ApiBase::PARAM_REQUIRED => true
 686                         ),
 687                         'watch' => array(
 688                                 ApiBase::PARAM_DFLT => false,
 689                                 ApiBase::PARAM_DEPRECATED => true,
 690                         ),
 691                         'watchlist' => array(
 692                                 ApiBase::PARAM_DFLT => 'preferences',
 693                                 ApiBase::PARAM_TYPE => array(
 694                                         'watch',
 695                                         'preferences',
 696                                         'nochange'
 697                                 ),
 698                         ),
 699                         'ignorewarnings' => false,
 700                         'file' => array(
 701                                 ApiBase::PARAM_TYPE => 'upload',
 702                         ),
 703                         'url' => null,
 704                         'filekey' => null,
 705                         'sessionkey' => array(
 706                                 ApiBase::PARAM_DFLT => null,
 707                                 ApiBase::PARAM_DEPRECATED => true,
 708                         ),
 709                         'stash' => false,
 710
 711                         'filesize' => null,
 712                         'offset' => null,
 713                         'chunk' => array(
 714                                 ApiBase::PARAM_TYPE => 'upload',
 715                         ),
 716
 717                         'async' => false,
 718                         'asyncdownload' => false,
 719                         'leavemessage' => false,
 720                         'statuskey' => null,
 721                         'checkstatus' => false,
 722                 );
 723
 724                 return $params;
 725         }
 726
 727         public function getParamDescription() {
 728                 $params = array(
 729                         'filename' => 'Target filename',
 730                         'token' => 'Edit token. You can get one of these through prop=info',
 731                         'comment' => 'Upload comment. Also used as the initial page text for new files if "text" is not specified',
 732                         'text' => 'Initial page text for new files',
 733                         'watch' => 'Watch the page',
 734                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
 735                         'ignorewarnings' => 'Ignore any warnings',
 736                         'file' => 'File contents',
 737                         'url' => 'URL to fetch the file from',
 738                         'filekey' => 'Key that identifies a previous upload that was stashed temporarily.',
 739                         'sessionkey' => 'Same as filekey, maintained for backward compatibility.',
 740                         'stash' => 'If set, the server will not add the file to the repository and stash it temporarily.',
 741
 742                         'chunk' => 'Chunk contents',
 743                         'offset' => 'Offset of chunk in bytes',
 744                         'filesize' => 'Filesize of entire upload',
 745
 746                         'async' => 'Make potentially large file operations asynchronous when possible',
 747                         'asyncdownload' => 'Make fetching a URL asynchronous',
 748                         'leavemessage' => 'If asyncdownload is used, leave a message on the user talk page if finished',
 749                         'statuskey' => 'Fetch the upload status for this file key (upload by URL)',
 750                         'checkstatus' => 'Only fetch the upload status for the given file key',
 751                 );
 752
 753                 return $params;
 754
 755         }
 756
 757         public function getResultProperties() {
 758                 return array(
 759                         '' => array(
 760                                 'result' => array(
 761                                         ApiBase::PROP_TYPE => array(
 762                                                 'Success',
 763                                                 'Warning',
 764                                                 'Continue',
 765                                                 'Queued'
 766                                         ),
 767                                 ),
 768                                 'filekey' => array(
 769                                         ApiBase::PROP_TYPE => 'string',
 770                                         ApiBase::PROP_NULLABLE => true
 771                                 ),
 772                                 'sessionkey' => array(
 773                                         ApiBase::PROP_TYPE => 'string',
 774                                         ApiBase::PROP_NULLABLE => true
 775                                 ),
 776                                 'offset' => array(
 777                                         ApiBase::PROP_TYPE => 'integer',
 778                                         ApiBase::PROP_NULLABLE => true
 779                                 ),
 780                                 'statuskey' => array(
 781                                         ApiBase::PROP_TYPE => 'string',
 782                                         ApiBase::PROP_NULLABLE => true
 783                                 ),
 784                                 'filename' => array(
 785                                         ApiBase::PROP_TYPE => 'string',
 786                                         ApiBase::PROP_NULLABLE => true
 787                                 )
 788                         )
 789                 );
 790         }
 791
 792         public function getDescription() {
 793                 return array(
 794                         'Upload a file, or get the status of pending uploads. Several methods are available:',
 795                         ' * Upload file contents directly, using the "file" parameter',
 796                         ' * Have the MediaWiki server fetch a file from a URL, using the "url" parameter',
 797                         ' * Complete an earlier upload that failed due to warnings, using the "filekey" parameter',
 798                         'Note that the HTTP POST must be done as a file upload (i.e. using multipart/form-data) when',
 799                         'sending the "file". Also you must get and send an edit token before doing any upload stuff'
 800                 );
 801         }
 802
 803         public function getPossibleErrors() {
 804                 return array_merge( parent::getPossibleErrors(),
 805                         $this->getRequireOnlyOneParameterErrorMessages( array( 'filekey', 'file', 'url', 'statuskey' ) ),
 806                         array(
 807                                 array( 'uploaddisabled' ),
 808                                 array( 'invalid-file-key' ),
 809                                 array( 'uploaddisabled' ),
 810                                 array( 'mustbeloggedin', 'upload' ),
 811                                 array( 'badaccess-groups' ),
 812                                 array( 'code' => 'fetchfileerror', 'info' => '' ),
 813                                 array( 'code' => 'nomodule', 'info' => 'No upload module set' ),
 814                                 array( 'code' => 'empty-file', 'info' => 'The file you submitted was empty' ),
 815                                 array( 'code' => 'filetype-missing', 'info' => 'The file is missing an extension' ),
 816                                 array( 'code' => 'filename-tooshort', 'info' => 'The filename is too short' ),
 817                                 array( 'code' => 'overwrite', 'info' => 'Overwriting an existing file is not allowed' ),
 818                                 array( 'code' => 'stashfailed', 'info' => 'Stashing temporary file failed' ),
 819                                 array( 'code' => 'publishfailed', 'info' => 'Publishing of stashed file failed' ),
 820                                 array( 'code' => 'internal-error', 'info' => 'An internal error occurred' ),
 821                                 array( 'code' => 'asynccopyuploaddisabled', 'info' => 'Asynchronous copy uploads disabled' ),
 822                                 array( 'code' => 'stasherror', 'info' => 'An upload stash error occurred' ),
 823                                 array( 'fileexists-forbidden' ),
 824                                 array( 'fileexists-shared-forbidden' ),
 825                         )
 826                 );
 827         }
 828
 829         public function needsToken() {
 830                 return true;
 831         }
 832
 833         public function getTokenSalt() {
 834                 return '';
 835         }
 836
 837         public function getExamples() {
 838                 return array(
 839                         'api.php?action=upload&filename=Wiki.png&url=http%3A//upload.wikimedia.org/wikipedia/en/b/bc/Wiki.png'
 840                                 => 'Upload from a URL',
 841                         'api.php?action=upload&filename=Wiki.png&filekey=filekey&ignorewarnings=1'
 842                                 => 'Complete an upload that failed due to warnings',
 843                 );
 844         }
 845
 846         public function getHelpUrls() {
 847                 return 'https://www.mediawiki.org/wiki/API:Upload';
 848         }
 849 }