includes/specials/SpecialUpload.php

   1 <?php
   2 /**
   3  * Implements Special:Upload
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  * @ingroup Upload
  23  */
  24
  25 /**
  26  * Form for handling uploads and special page.
  27  *
  28  * @ingroup SpecialPage
  29  * @ingroup Upload
  30  */
  31 class SpecialUpload extends SpecialPage {
  32         /**
  33          * Constructor : initialise object
  34          * Get data POSTed through the form and assign them to the object
  35          * @param $request WebRequest : data posted.
  36          */
  37         public function __construct( $request = null ) {
  38                 parent::__construct( 'Upload', 'upload' );
  39         }
  40
  41         /** Misc variables **/
  42         public $mRequest; // The WebRequest or FauxRequest this form is supposed to handle
  43         public $mSourceType;
  44
  45         /**
  46          * @var UploadBase
  47          */
  48         public $mUpload;
  49
  50         /**
  51          * @var LocalFile
  52          */
  53         public $mLocalFile;
  54         public $mUploadClicked;
  55
  56         /** User input variables from the "description" section **/
  57         public $mDesiredDestName; // The requested target file name
  58         public $mComment;
  59         public $mLicense;
  60
  61         /** User input variables from the root section **/
  62         public $mIgnoreWarning;
  63         public $mWatchThis;
  64         public $mCopyrightStatus;
  65         public $mCopyrightSource;
  66
  67         /** Hidden variables **/
  68         public $mDestWarningAck;
  69         public $mForReUpload; // The user followed an "overwrite this file" link
  70         public $mCancelUpload; // The user clicked "Cancel and return to upload form" button
  71         public $mTokenOk;
  72         public $mUploadSuccessful = false; // Subclasses can use this to determine whether a file was uploaded
  73
  74         /** Text injection points for hooks not using HTMLForm **/
  75         public $uploadFormTextTop;
  76         public $uploadFormTextAfterSummary;
  77
  78         public $mWatchthis;
  79
  80         /**
  81          * Initialize instance variables from request and create an Upload handler
  82          */
  83         protected function loadRequest() {
  84                 $this->mRequest = $request = $this->getRequest();
  85                 $this->mSourceType = $request->getVal( 'wpSourceType', 'file' );
  86                 $this->mUpload = UploadBase::createFromRequest( $request );
  87                 $this->mUploadClicked = $request->wasPosted()
  88                         && ( $request->getCheck( 'wpUpload' )
  89                                 || $request->getCheck( 'wpUploadIgnoreWarning' ) );
  90
  91                 // Guess the desired name from the filename if not provided
  92                 $this->mDesiredDestName = $request->getText( 'wpDestFile' );
  93                 if ( !$this->mDesiredDestName && $request->getFileName( 'wpUploadFile' ) !== null ) {
  94                         $this->mDesiredDestName = $request->getFileName( 'wpUploadFile' );
  95                 }
  96                 $this->mComment = $request->getText( 'wpUploadDescription' );
  97                 $this->mLicense = $request->getText( 'wpLicense' );
  98
  99                 $this->mDestWarningAck = $request->getText( 'wpDestFileWarningAck' );
 100                 $this->mIgnoreWarning = $request->getCheck( 'wpIgnoreWarning' )
 101                         || $request->getCheck( 'wpUploadIgnoreWarning' );
 102                 $this->mWatchthis = $request->getBool( 'wpWatchthis' ) && $this->getUser()->isLoggedIn();
 103                 $this->mCopyrightStatus = $request->getText( 'wpUploadCopyStatus' );
 104                 $this->mCopyrightSource = $request->getText( 'wpUploadSource' );
 105
 106                 $this->mForReUpload = $request->getBool( 'wpForReUpload' ); // updating a file
 107                 $this->mCancelUpload = $request->getCheck( 'wpCancelUpload' )
 108                         || $request->getCheck( 'wpReUpload' ); // b/w compat
 109
 110                 // If it was posted check for the token (no remote POST'ing with user credentials)
 111                 $token = $request->getVal( 'wpEditToken' );
 112                 $this->mTokenOk = $this->getUser()->matchEditToken( $token );
 113
 114                 $this->uploadFormTextTop = '';
 115                 $this->uploadFormTextAfterSummary = '';
 116         }
 117
 118         /**
 119          * This page can be shown if uploading is enabled.
 120          * Handle permission checking elsewhere in order to be able to show
 121          * custom error messages.
 122          *
 123          * @param $user User object
 124          * @return Boolean
 125          */
 126         public function userCanExecute( User $user ) {
 127                 return UploadBase::isEnabled() && parent::userCanExecute( $user );
 128         }
 129
 130         /**
 131          * Special page entry point
 132          */
 133         public function execute( $par ) {
 134                 $this->setHeaders();
 135                 $this->outputHeader();
 136
 137                 # Check uploading enabled
 138                 if ( !UploadBase::isEnabled() ) {
 139                         throw new ErrorPageError( 'uploaddisabled', 'uploaddisabledtext' );
 140                 }
 141
 142                 # Check permissions
 143                 $user = $this->getUser();
 144                 $permissionRequired = UploadBase::isAllowed( $user );
 145                 if ( $permissionRequired !== true ) {
 146                         throw new PermissionsError( $permissionRequired );
 147                 }
 148
 149                 # Check blocks
 150                 if ( $user->isBlocked() ) {
 151                         throw new UserBlockedError( $user->getBlock() );
 152                 }
 153
 154                 # Check whether we actually want to allow changing stuff
 155                 $this->checkReadOnly();
 156
 157                 $this->loadRequest();
 158
 159                 # Unsave the temporary file in case this was a cancelled upload
 160                 if ( $this->mCancelUpload ) {
 161                         if ( !$this->unsaveUploadedFile() ) {
 162                                 # Something went wrong, so unsaveUploadedFile showed a warning
 163                                 return;
 164                         }
 165                 }
 166
 167                 # Process upload or show a form
 168                 if (
 169                         $this->mTokenOk && !$this->mCancelUpload &&
 170                         ( $this->mUpload && $this->mUploadClicked )
 171                 ) {
 172                         $this->processUpload();
 173                 } else {
 174                         # Backwards compatibility hook
 175                         if ( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) ) {
 176                                 wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 177                                 return;
 178                         }
 179                         $this->showUploadForm( $this->getUploadForm() );
 180                 }
 181
 182                 # Cleanup
 183                 if ( $this->mUpload ) {
 184                         $this->mUpload->cleanupTempFile();
 185                 }
 186         }
 187
 188         /**
 189          * Show the main upload form
 190          *
 191          * @param $form Mixed: an HTMLForm instance or HTML string to show
 192          */
 193         protected function showUploadForm( $form ) {
 194                 # Add links if file was previously deleted
 195                 if ( $this->mDesiredDestName ) {
 196                         $this->showViewDeletedLinks();
 197                 }
 198
 199                 if ( $form instanceof HTMLForm ) {
 200                         $form->show();
 201                 } else {
 202                         $this->getOutput()->addHTML( $form );
 203                 }
 204
 205         }
 206
 207         /**
 208          * Get an UploadForm instance with title and text properly set.
 209          *
 210          * @param string $message HTML string to add to the form
 211          * @param string $sessionKey session key in case this is a stashed upload
 212          * @param $hideIgnoreWarning Boolean: whether to hide "ignore warning" check box
 213          * @return UploadForm
 214          */
 215         protected function getUploadForm( $message = '', $sessionKey = '', $hideIgnoreWarning = false ) {
 216                 # Initialize form
 217                 $form = new UploadForm( array(
 218                         'watch' => $this->getWatchCheck(),
 219                         'forreupload' => $this->mForReUpload,
 220                         'sessionkey' => $sessionKey,
 221                         'hideignorewarning' => $hideIgnoreWarning,
 222                         'destwarningack' => (bool)$this->mDestWarningAck,
 223
 224                         'description' => $this->mComment,
 225                         'texttop' => $this->uploadFormTextTop,
 226                         'textaftersummary' => $this->uploadFormTextAfterSummary,
 227                         'destfile' => $this->mDesiredDestName,
 228                 ), $this->getContext() );
 229                 $form->setTitle( $this->getTitle() );
 230
 231                 # Check the token, but only if necessary
 232                 if (
 233                         !$this->mTokenOk && !$this->mCancelUpload &&
 234                         ( $this->mUpload && $this->mUploadClicked )
 235                 ) {
 236                         $form->addPreText( $this->msg( 'session_fail_preview' )->parse() );
 237                 }
 238
 239                 # Give a notice if the user is uploading a file that has been deleted or moved
 240                 # Note that this is independent from the message 'filewasdeleted' that requires JS
 241                 $desiredTitleObj = Title::makeTitleSafe( NS_FILE, $this->mDesiredDestName );
 242                 $delNotice = ''; // empty by default
 243                 if ( $desiredTitleObj instanceof Title && !$desiredTitleObj->exists() ) {
 244                         LogEventsList::showLogExtract( $delNotice, array( 'delete', 'move' ),
 245                                 $desiredTitleObj,
 246                                 '', array( 'lim' => 10,
 247                                         'conds' => array( "log_action != 'revision'" ),
 248                                         'showIfEmpty' => false,
 249                                         'msgKey' => array( 'upload-recreate-warning' ) )
 250                         );
 251                 }
 252                 $form->addPreText( $delNotice );
 253
 254                 # Add text to form
 255                 $form->addPreText( '<div id="uploadtext">' .
 256                         $this->msg( 'uploadtext', array( $this->mDesiredDestName ) )->parseAsBlock() .
 257                         '</div>' );
 258                 # Add upload error message
 259                 $form->addPreText( $message );
 260
 261                 # Add footer to form
 262                 $uploadFooter = $this->msg( 'uploadfooter' );
 263                 if ( !$uploadFooter->isDisabled() ) {
 264                         $form->addPostText( '<div id="mw-upload-footer-message">'
 265                                 . $uploadFooter->parseAsBlock() . "</div>\n" );
 266                 }
 267
 268                 return $form;
 269         }
 270
 271         /**
 272          * Shows the "view X deleted revivions link""
 273          */
 274         protected function showViewDeletedLinks() {
 275                 $title = Title::makeTitleSafe( NS_FILE, $this->mDesiredDestName );
 276                 $user = $this->getUser();
 277                 // Show a subtitle link to deleted revisions (to sysops et al only)
 278                 if ( $title instanceof Title ) {
 279                         $count = $title->isDeleted();
 280                         if ( $count > 0 && $user->isAllowed( 'deletedhistory' ) ) {
 281                                 $restorelink = Linker::linkKnown(
 282                                         SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 283                                         $this->msg( 'restorelink' )->numParams( $count )->escaped()
 284                                 );
 285                                 $link = $this->msg( $user->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted' )
 286                                         ->rawParams( $restorelink )->parseAsBlock();
 287                                 $this->getOutput()->addHTML( "<div id=\"contentSub2\">{$link}</div>" );
 288                         }
 289                 }
 290         }
 291
 292         /**
 293          * Stashes the upload and shows the main upload form.
 294          *
 295          * Note: only errors that can be handled by changing the name or
 296          * description should be redirected here. It should be assumed that the
 297          * file itself is sane and has passed UploadBase::verifyFile. This
 298          * essentially means that UploadBase::VERIFICATION_ERROR and
 299          * UploadBase::EMPTY_FILE should not be passed here.
 300          *
 301          * @param string $message HTML message to be passed to mainUploadForm
 302          */
 303         protected function showRecoverableUploadError( $message ) {
 304                 $sessionKey = $this->mUpload->stashSession();
 305                 $message = '<h2>' . $this->msg( 'uploaderror' )->escaped() . "</h2>\n" .
 306                         '<div class="error">' . $message . "</div>\n";
 307
 308                 $form = $this->getUploadForm( $message, $sessionKey );
 309                 $form->setSubmitText( $this->msg( 'upload-tryagain' )->escaped() );
 310                 $this->showUploadForm( $form );
 311         }
 312         /**
 313          * Stashes the upload, shows the main form, but adds a "continue anyway button".
 314          * Also checks whether there are actually warnings to display.
 315          *
 316          * @param $warnings Array
 317          * @return boolean true if warnings were displayed, false if there are no
 318          *         warnings and it should continue processing
 319          */
 320         protected function showUploadWarning( $warnings ) {
 321                 # If there are no warnings, or warnings we can ignore, return early.
 322                 # mDestWarningAck is set when some javascript has shown the warning
 323                 # to the user. mForReUpload is set when the user clicks the "upload a
 324                 # new version" link.
 325                 if ( !$warnings || ( count( $warnings ) == 1 &&
 326                         isset( $warnings['exists'] ) &&
 327                         ( $this->mDestWarningAck || $this->mForReUpload ) ) )
 328                 {
 329                         return false;
 330                 }
 331
 332                 $sessionKey = $this->mUpload->stashSession();
 333
 334                 $warningHtml = '<h2>' . $this->msg( 'uploadwarning' )->escaped() . "</h2>\n"
 335                         . '<ul class="warning">';
 336                 foreach ( $warnings as $warning => $args ) {
 337                         if ( $warning == 'badfilename' ) {
 338                                 $this->mDesiredDestName = Title::makeTitle( NS_FILE, $args )->getText();
 339                         }
 340                         if ( $warning == 'exists' ) {
 341                                 $msg = "\t<li>" . self::getExistsWarning( $args ) . "</li>\n";
 342                         } elseif ( $warning == 'duplicate' ) {
 343                                 $msg = self::getDupeWarning( $args );
 344                         } elseif ( $warning == 'duplicate-archive' ) {
 345                                 $msg = "\t<li>" . $this->msg( 'file-deleted-duplicate',
 346                                                 Title::makeTitle( NS_FILE, $args )->getPrefixedText() )->parse()
 347                                         . "</li>\n";
 348                         } else {
 349                                 if ( $args === true ) {
 350                                         $args = array();
 351                                 } elseif ( !is_array( $args ) ) {
 352                                         $args = array( $args );
 353                                 }
 354                                 $msg = "\t<li>" . $this->msg( $warning, $args )->parse() . "</li>\n";
 355                         }
 356                         $warningHtml .= $msg;
 357                 }
 358                 $warningHtml .= "</ul>\n";
 359                 $warningHtml .= $this->msg( 'uploadwarning-text' )->parseAsBlock();
 360
 361                 $form = $this->getUploadForm( $warningHtml, $sessionKey, /* $hideIgnoreWarning */ true );
 362                 $form->setSubmitText( $this->msg( 'upload-tryagain' )->text() );
 363                 $form->addButton( 'wpUploadIgnoreWarning', $this->msg( 'ignorewarning' )->text() );
 364                 $form->addButton( 'wpCancelUpload', $this->msg( 'reuploaddesc' )->text() );
 365
 366                 $this->showUploadForm( $form );
 367
 368                 # Indicate that we showed a form
 369                 return true;
 370         }
 371
 372         /**
 373          * Show the upload form with error message, but do not stash the file.
 374          *
 375          * @param string $message HTML string
 376          */
 377         protected function showUploadError( $message ) {
 378                 $message = '<h2>' . $this->msg( 'uploadwarning' )->escaped() . "</h2>\n" .
 379                         '<div class="error">' . $message . "</div>\n";
 380                 $this->showUploadForm( $this->getUploadForm( $message ) );
 381         }
 382
 383         /**
 384          * Do the upload.
 385          * Checks are made in SpecialUpload::execute()
 386          */
 387         protected function processUpload() {
 388                 // Fetch the file if required
 389                 $status = $this->mUpload->fetchFile();
 390                 if ( !$status->isOK() ) {
 391                         $this->showUploadError( $this->getOutput()->parse( $status->getWikiText() ) );
 392                         return;
 393                 }
 394
 395                 if ( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) ) {
 396                         wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file.\n" );
 397                         // This code path is deprecated. If you want to break upload processing
 398                         // do so by hooking into the appropriate hooks in UploadBase::verifyUpload
 399                         // and UploadBase::verifyFile.
 400                         // If you use this hook to break uploading, the user will be returned
 401                         // an empty form with no error message whatsoever.
 402                         return;
 403                 }
 404
 405                 // Upload verification
 406                 $details = $this->mUpload->verifyUpload();
 407                 if ( $details['status'] != UploadBase::OK ) {
 408                         $this->processVerificationError( $details );
 409                         return;
 410                 }
 411
 412                 // Verify permissions for this title
 413                 $permErrors = $this->mUpload->verifyTitlePermissions( $this->getUser() );
 414                 if ( $permErrors !== true ) {
 415                         $code = array_shift( $permErrors[0] );
 416                         $this->showRecoverableUploadError( $this->msg( $code, $permErrors[0] )->parse() );
 417                         return;
 418                 }
 419
 420                 $this->mLocalFile = $this->mUpload->getLocalFile();
 421
 422                 // Check warnings if necessary
 423                 if ( !$this->mIgnoreWarning ) {
 424                         $warnings = $this->mUpload->checkWarnings();
 425                         if ( $this->showUploadWarning( $warnings ) ) {
 426                                 return;
 427                         }
 428                 }
 429
 430                 // Get the page text if this is not a reupload
 431                 if ( !$this->mForReUpload ) {
 432                         $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 433                                 $this->mCopyrightStatus, $this->mCopyrightSource );
 434                 } else {
 435                         $pageText = false;
 436                 }
 437                 $status = $this->mUpload->performUpload( $this->mComment, $pageText, $this->mWatchthis, $this->getUser() );
 438                 if ( !$status->isGood() ) {
 439                         $this->showUploadError( $this->getOutput()->parse( $status->getWikiText() ) );
 440                         return;
 441                 }
 442
 443                 // Success, redirect to description page
 444                 $this->mUploadSuccessful = true;
 445                 wfRunHooks( 'SpecialUploadComplete', array( &$this ) );
 446                 $this->getOutput()->redirect( $this->mLocalFile->getTitle()->getFullURL() );
 447         }
 448
 449         /**
 450          * Get the initial image page text based on a comment and optional file status information
 451          * @param $comment string
 452          * @param $license string
 453          * @param $copyStatus string
 454          * @param $source string
 455          * @return string
 456          */
 457         public static function getInitialPageText( $comment = '', $license = '', $copyStatus = '', $source = '' ) {
 458                 global $wgUseCopyrightUpload, $wgForceUIMsgAsContentMsg;
 459                 $wgForceUIMsgAsContentMsg = (array) $wgForceUIMsgAsContentMsg;
 460
 461                 $msg = array();
 462                 /* These messages are transcluded into the actual text of the description page.
 463                  * Thus, forcing them as content messages makes the upload to produce an int: template
 464                  * instead of hardcoding it there in the uploader language.
 465                  */
 466                 foreach ( array( 'license-header', 'filedesc', 'filestatus', 'filesource' ) as $msgName ) {
 467                         if ( in_array( $msgName, $wgForceUIMsgAsContentMsg ) ) {
 468                                 $msg[$msgName] = "{{int:$msgName}}";
 469                         } else {
 470                                 $msg[$msgName] = wfMessage( $msgName )->inContentLanguage()->text();
 471                         }
 472                 }
 473
 474                 if ( $wgUseCopyrightUpload ) {
 475                         $licensetxt = '';
 476                         if ( $license != '' ) {
 477                                 $licensetxt = '== ' . $msg['license-header'] . " ==\n" . '{{' . $license . '}}' . "\n";
 478                         }
 479                         $pageText = '== ' . $msg['filedesc'] . " ==\n" . $comment . "\n" .
 480                                 '== ' . $msg['filestatus'] . " ==\n" . $copyStatus . "\n" .
 481                                 "$licensetxt" .
 482                                 '== ' . $msg['filesource'] . " ==\n" . $source;
 483                 } else {
 484                         if ( $license != '' ) {
 485                                 $filedesc = $comment == '' ? '' : '== ' . $msg['filedesc'] . " ==\n" . $comment . "\n";
 486                                         $pageText = $filedesc .
 487                                         '== ' . $msg['license-header'] . " ==\n" . '{{' . $license . '}}' . "\n";
 488                         } else {
 489                                 $pageText = $comment;
 490                         }
 491                 }
 492                 return $pageText;
 493         }
 494
 495         /**
 496          * See if we should check the 'watch this page' checkbox on the form
 497          * based on the user's preferences and whether we're being asked
 498          * to create a new file or update an existing one.
 499          *
 500          * In the case where 'watch edits' is off but 'watch creations' is on,
 501          * we'll leave the box unchecked.
 502          *
 503          * Note that the page target can be changed *on the form*, so our check
 504          * state can get out of sync.
 505          * @return Bool|String
 506          */
 507         protected function getWatchCheck() {
 508                 if ( $this->getUser()->getOption( 'watchdefault' ) ) {
 509                         // Watch all edits!
 510                         return true;
 511                 }
 512
 513                 $local = wfLocalFile( $this->mDesiredDestName );
 514                 if ( $local && $local->exists() ) {
 515                         // We're uploading a new version of an existing file.
 516                         // No creation, so don't watch it if we're not already.
 517                         return $this->getUser()->isWatched( $local->getTitle() );
 518                 } else {
 519                         // New page should get watched if that's our option.
 520                         return $this->getUser()->getOption( 'watchcreations' );
 521                 }
 522         }
 523
 524         /**
 525          * Provides output to the user for a result of UploadBase::verifyUpload
 526          *
 527          * @param array $details result of UploadBase::verifyUpload
 528          * @throws MWException
 529          */
 530         protected function processVerificationError( $details ) {
 531                 global $wgFileExtensions;
 532
 533                 switch( $details['status'] ) {
 534
 535                         /** Statuses that only require name changing **/
 536                         case UploadBase::MIN_LENGTH_PARTNAME:
 537                                 $this->showRecoverableUploadError( $this->msg( 'minlength1' )->escaped() );
 538                                 break;
 539                         case UploadBase::ILLEGAL_FILENAME:
 540                                 $this->showRecoverableUploadError( $this->msg( 'illegalfilename',
 541                                         $details['filtered'] )->parse() );
 542                                 break;
 543                         case UploadBase::FILENAME_TOO_LONG:
 544                                 $this->showRecoverableUploadError( $this->msg( 'filename-toolong' )->escaped() );
 545                                 break;
 546                         case UploadBase::FILETYPE_MISSING:
 547                                 $this->showRecoverableUploadError( $this->msg( 'filetype-missing' )->parse() );
 548                                 break;
 549                         case UploadBase::WINDOWS_NONASCII_FILENAME:
 550                                 $this->showRecoverableUploadError( $this->msg( 'windows-nonascii-filename' )->parse() );
 551                                 break;
 552
 553                         /** Statuses that require reuploading **/
 554                         case UploadBase::EMPTY_FILE:
 555                                 $this->showUploadError( $this->msg( 'emptyfile' )->escaped() );
 556                                 break;
 557                         case UploadBase::FILE_TOO_LARGE:
 558                                 $this->showUploadError( $this->msg( 'largefileserver' )->escaped() );
 559                                 break;
 560                         case UploadBase::FILETYPE_BADTYPE:
 561                                 $msg = $this->msg( 'filetype-banned-type' );
 562                                 if ( isset( $details['blacklistedExt'] ) ) {
 563                                         $msg->params( $this->getLanguage()->commaList( $details['blacklistedExt'] ) );
 564                                 } else {
 565                                         $msg->params( $details['finalExt'] );
 566                                 }
 567                                 $msg->params( $this->getLanguage()->commaList( $wgFileExtensions ),
 568                                         count( $wgFileExtensions ) );
 569
 570                                 // Add PLURAL support for the first parameter. This results
 571                                 // in a bit unlogical parameter sequence, but does not break
 572                                 // old translations
 573                                 if ( isset( $details['blacklistedExt'] ) ) {
 574                                         $msg->params( count( $details['blacklistedExt'] ) );
 575                                 } else {
 576                                         $msg->params( 1 );
 577                                 }
 578
 579                                 $this->showUploadError( $msg->parse() );
 580                                 break;
 581                         case UploadBase::VERIFICATION_ERROR:
 582                                 unset( $details['status'] );
 583                                 $code = array_shift( $details['details'] );
 584                                 $this->showUploadError( $this->msg( $code, $details['details'] )->parse() );
 585                                 break;
 586                         case UploadBase::HOOK_ABORTED:
 587                                 if ( is_array( $details['error'] ) ) { # allow hooks to return error details in an array
 588                                         $args = $details['error'];
 589                                         $error = array_shift( $args );
 590                                 } else {
 591                                         $error = $details['error'];
 592                                         $args = null;
 593                                 }
 594
 595                                 $this->showUploadError( $this->msg( $error, $args )->parse() );
 596                                 break;
 597                         default:
 598                                 throw new MWException( __METHOD__ . ": Unknown value `{$details['status']}`" );
 599                 }
 600         }
 601
 602         /**
 603          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 604          *
 605          * @return Boolean: success
 606          */
 607         protected function unsaveUploadedFile() {
 608                 if ( !( $this->mUpload instanceof UploadFromStash ) ) {
 609                         return true;
 610                 }
 611                 $success = $this->mUpload->unsaveUploadedFile();
 612                 if ( !$success ) {
 613                         $this->getOutput()->showFileDeleteError( $this->mUpload->getTempPath() );
 614                         return false;
 615                 } else {
 616                         return true;
 617                 }
 618         }
 619
 620         /*** Functions for formatting warnings ***/
 621
 622         /**
 623          * Formats a result of UploadBase::getExistsWarning as HTML
 624          * This check is static and can be done pre-upload via AJAX
 625          *
 626          * @param array $exists the result of UploadBase::getExistsWarning
 627          * @return String: empty string if there is no warning or an HTML fragment
 628          */
 629         public static function getExistsWarning( $exists ) {
 630                 if ( !$exists ) {
 631                         return '';
 632                 }
 633
 634                 $file = $exists['file'];
 635                 $filename = $file->getTitle()->getPrefixedText();
 636                 $warning = '';
 637
 638                 if ( $exists['warning'] == 'exists' ) {
 639                         // Exact match
 640                         $warning = wfMessage( 'fileexists', $filename )->parse();
 641                 } elseif ( $exists['warning'] == 'page-exists' ) {
 642                         // Page exists but file does not
 643                         $warning = wfMessage( 'filepageexists', $filename )->parse();
 644                 } elseif ( $exists['warning'] == 'exists-normalized' ) {
 645                         $warning = wfMessage( 'fileexists-extension', $filename,
 646                                 $exists['normalizedFile']->getTitle()->getPrefixedText() )->parse();
 647                 } elseif ( $exists['warning'] == 'thumb' ) {
 648                         // Swapped argument order compared with other messages for backwards compatibility
 649                         $warning = wfMessage( 'fileexists-thumbnail-yes',
 650                                 $exists['thumbFile']->getTitle()->getPrefixedText(), $filename )->parse();
 651                 } elseif ( $exists['warning'] == 'thumb-name' ) {
 652                         // Image w/o '180px-' does not exists, but we do not like these filenames
 653                         $name = $file->getName();
 654                         $badPart = substr( $name, 0, strpos( $name, '-' ) + 1 );
 655                         $warning = wfMessage( 'file-thumbnail-no', $badPart )->parse();
 656                 } elseif ( $exists['warning'] == 'bad-prefix' ) {
 657                         $warning = wfMessage( 'filename-bad-prefix', $exists['prefix'] )->parse();
 658                 } elseif ( $exists['warning'] == 'was-deleted' ) {
 659                         # If the file existed before and was deleted, warn the user of this
 660                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 661                         $llink = Linker::linkKnown(
 662                                 $ltitle,
 663                                 wfMessage( 'deletionlog' )->escaped(),
 664                                 array(),
 665                                 array(
 666                                         'type' => 'delete',
 667                                         'page' => $filename
 668                                 )
 669                         );
 670                         $warning = wfMessage( 'filewasdeleted' )->rawParams( $llink )->parseAsBlock();
 671                 }
 672
 673                 return $warning;
 674         }
 675
 676         /**
 677          * Get a list of warnings
 678          *
 679          * @param string $filename local filename, e.g. 'file exists', 'non-descriptive filename'
 680          * @return Array: list of warning messages
 681          */
 682         public static function ajaxGetExistsWarning( $filename ) {
 683                 $file = wfFindFile( $filename );
 684                 if ( !$file ) {
 685                         // Force local file so we have an object to do further checks against
 686                         // if there isn't an exact match...
 687                         $file = wfLocalFile( $filename );
 688                 }
 689                 $s = '&#160;';
 690                 if ( $file ) {
 691                         $exists = UploadBase::getExistsWarning( $file );
 692                         $warning = self::getExistsWarning( $exists );
 693                         if ( $warning !== '' ) {
 694                                 $s = "<div>$warning</div>";
 695                         }
 696                 }
 697                 return $s;
 698         }
 699
 700         /**
 701          * Construct a warning and a gallery from an array of duplicate files.
 702          * @param $dupes array
 703          * @return string
 704          */
 705         public static function getDupeWarning( $dupes ) {
 706                 if ( !$dupes ) {
 707                         return '';
 708                 }
 709
 710                 $gallery = new ImageGallery;
 711                 $gallery->setShowBytes( false );
 712                 foreach ( $dupes as $file ) {
 713                         $gallery->add( $file->getTitle() );
 714                 }
 715                 return '<li>' .
 716                         wfMessage( 'file-exists-duplicate' )->numParams( count( $dupes ) )->parse() .
 717                         $gallery->toHtml() . "</li>\n";
 718         }
 719
 720         protected function getGroupName() {
 721                 return 'media';
 722         }
 723 }
 724
 725 /**
 726  * Sub class of HTMLForm that provides the form section of SpecialUpload
 727  */
 728 class UploadForm extends HTMLForm {
 729         protected $mWatch;
 730         protected $mForReUpload;
 731         protected $mSessionKey;
 732         protected $mHideIgnoreWarning;
 733         protected $mDestWarningAck;
 734         protected $mDestFile;
 735
 736         protected $mComment;
 737         protected $mTextTop;
 738         protected $mTextAfterSummary;
 739
 740         protected $mSourceIds;
 741
 742         protected $mMaxFileSize = array();
 743
 744         protected $mMaxUploadSize = array();
 745
 746         public function __construct( array $options = array(), IContextSource $context = null ) {
 747                 $this->mWatch = !empty( $options['watch'] );
 748                 $this->mForReUpload = !empty( $options['forreupload'] );
 749                 $this->mSessionKey = isset( $options['sessionkey'] )
 750                                 ? $options['sessionkey'] : '';
 751                 $this->mHideIgnoreWarning = !empty( $options['hideignorewarning'] );
 752                 $this->mDestWarningAck = !empty( $options['destwarningack'] );
 753                 $this->mDestFile = isset( $options['destfile'] ) ? $options['destfile'] : '';
 754
 755                 $this->mComment = isset( $options['description'] ) ?
 756                         $options['description'] : '';
 757
 758                 $this->mTextTop = isset( $options['texttop'] )
 759                         ? $options['texttop'] : '';
 760
 761                 $this->mTextAfterSummary = isset( $options['textaftersummary'] )
 762                         ? $options['textaftersummary'] : '';
 763
 764                 $sourceDescriptor = $this->getSourceSection();
 765                 $descriptor = $sourceDescriptor
 766                         + $this->getDescriptionSection()
 767                         + $this->getOptionsSection();
 768
 769                 wfRunHooks( 'UploadFormInitDescriptor', array( &$descriptor ) );
 770                 parent::__construct( $descriptor, $context, 'upload' );
 771
 772                 # Set some form properties
 773                 $this->setSubmitText( $this->msg( 'uploadbtn' )->text() );
 774                 $this->setSubmitName( 'wpUpload' );
 775                 # Used message keys: 'accesskey-upload', 'tooltip-upload'
 776                 $this->setSubmitTooltip( 'upload' );
 777                 $this->setId( 'mw-upload-form' );
 778
 779                 # Build a list of IDs for javascript insertion
 780                 $this->mSourceIds = array();
 781                 foreach ( $sourceDescriptor as $field ) {
 782                         if ( !empty( $field['id'] ) ) {
 783                                 $this->mSourceIds[] = $field['id'];
 784                         }
 785                 }
 786
 787         }
 788
 789         /**
 790          * Get the descriptor of the fieldset that contains the file source
 791          * selection. The section is 'source'
 792          *
 793          * @return Array: descriptor array
 794          */
 795         protected function getSourceSection() {
 796                 global $wgCopyUploadsFromSpecialUpload;
 797
 798                 if ( $this->mSessionKey ) {
 799                         return array(
 800                                 'SessionKey' => array(
 801                                         'type' => 'hidden',
 802                                         'default' => $this->mSessionKey,
 803                                 ),
 804                                 'SourceType' => array(
 805                                         'type' => 'hidden',
 806                                         'default' => 'Stash',
 807                                 ),
 808                         );
 809                 }
 810
 811                 $canUploadByUrl = UploadFromUrl::isEnabled()
 812                         && UploadFromUrl::isAllowed( $this->getUser() )
 813                         && $wgCopyUploadsFromSpecialUpload;
 814                 $radio = $canUploadByUrl;
 815                 $selectedSourceType = strtolower( $this->getRequest()->getText( 'wpSourceType', 'File' ) );
 816
 817                 $descriptor = array();
 818                 if ( $this->mTextTop ) {
 819                         $descriptor['UploadFormTextTop'] = array(
 820                                 'type' => 'info',
 821                                 'section' => 'source',
 822                                 'default' => $this->mTextTop,
 823                                 'raw' => true,
 824                         );
 825                 }
 826
 827                 $this->mMaxUploadSize['file'] = UploadBase::getMaxUploadSize( 'file' );
 828                 # Limit to upload_max_filesize unless we are running under HipHop and
 829                 # that setting doesn't exist
 830                 if ( !wfIsHipHop() ) {
 831                         $this->mMaxUploadSize['file'] = min( $this->mMaxUploadSize['file'],
 832                                 wfShorthandToInteger( ini_get( 'upload_max_filesize' ) ),
 833                                 wfShorthandToInteger( ini_get( 'post_max_size' ) )
 834                         );
 835                 }
 836
 837                 $descriptor['UploadFile'] = array(
 838                         'class' => 'UploadSourceField',
 839                         'section' => 'source',
 840                         'type' => 'file',
 841                         'id' => 'wpUploadFile',
 842                         'label-message' => 'sourcefilename',
 843                         'upload-type' => 'File',
 844                         'radio' => &$radio,
 845                         'help' => $this->msg( 'upload-maxfilesize',
 846                                 $this->getContext()->getLanguage()->formatSize( $this->mMaxUploadSize['file'] ) )
 847                                 ->parse() .
 848                                 $this->msg( 'word-separator' )->escaped() .
 849                                 $this->msg( 'upload_source_file' )->escaped(),
 850                         'checked' => $selectedSourceType == 'file',
 851                 );
 852
 853                 if ( $canUploadByUrl ) {
 854                         $this->mMaxUploadSize['url'] = UploadBase::getMaxUploadSize( 'url' );
 855                         $descriptor['UploadFileURL'] = array(
 856                                 'class' => 'UploadSourceField',
 857                                 'section' => 'source',
 858                                 'id' => 'wpUploadFileURL',
 859                                 'label-message' => 'sourceurl',
 860                                 'upload-type' => 'url',
 861                                 'radio' => &$radio,
 862                                 'help' => $this->msg( 'upload-maxfilesize',
 863                                         $this->getContext()->getLanguage()->formatSize( $this->mMaxUploadSize['url'] ) )
 864                                         ->parse() .
 865                                         $this->msg( 'word-separator' )->escaped() .
 866                                         $this->msg( 'upload_source_url' )->escaped(),
 867                                 'checked' => $selectedSourceType == 'url',
 868                         );
 869                 }
 870                 wfRunHooks( 'UploadFormSourceDescriptors', array( &$descriptor, &$radio, $selectedSourceType ) );
 871
 872                 $descriptor['Extensions'] = array(
 873                         'type' => 'info',
 874                         'section' => 'source',
 875                         'default' => $this->getExtensionsMessage(),
 876                         'raw' => true,
 877                 );
 878                 return $descriptor;
 879         }
 880
 881         /**
 882          * Get the messages indicating which extensions are preferred and prohibitted.
 883          *
 884          * @return String: HTML string containing the message
 885          */
 886         protected function getExtensionsMessage() {
 887                 # Print a list of allowed file extensions, if so configured.  We ignore
 888                 # MIME type here, it's incomprehensible to most people and too long.
 889                 global $wgCheckFileExtensions, $wgStrictFileExtensions,
 890                 $wgFileExtensions, $wgFileBlacklist;
 891
 892                 if ( $wgCheckFileExtensions ) {
 893                         if ( $wgStrictFileExtensions ) {
 894                                 # Everything not permitted is banned
 895                                 $extensionsList =
 896                                         '<div id="mw-upload-permitted">' .
 897                                         $this->msg( 'upload-permitted', $this->getContext()->getLanguage()->commaList( $wgFileExtensions ) )->parseAsBlock() .
 898                                         "</div>\n";
 899                         } else {
 900                                 # We have to list both preferred and prohibited
 901                                 $extensionsList =
 902                                         '<div id="mw-upload-preferred">' .
 903                                                 $this->msg( 'upload-preferred', $this->getContext()->getLanguage()->commaList( $wgFileExtensions ) )->parseAsBlock() .
 904                                         "</div>\n" .
 905                                         '<div id="mw-upload-prohibited">' .
 906                                                 $this->msg( 'upload-prohibited', $this->getContext()->getLanguage()->commaList( $wgFileBlacklist ) )->parseAsBlock() .
 907                                         "</div>\n";
 908                         }
 909                 } else {
 910                         # Everything is permitted.
 911                         $extensionsList = '';
 912                 }
 913                 return $extensionsList;
 914         }
 915
 916         /**
 917          * Get the descriptor of the fieldset that contains the file description
 918          * input. The section is 'description'
 919          *
 920          * @return Array: descriptor array
 921          */
 922         protected function getDescriptionSection() {
 923                 if ( $this->mSessionKey ) {
 924                         $stash = RepoGroup::singleton()->getLocalRepo()->getUploadStash();
 925                         try {
 926                                 $file = $stash->getFile( $this->mSessionKey );
 927                         } catch ( MWException $e ) {
 928                                 $file = null;
 929                         }
 930                         if ( $file ) {
 931                                 global $wgContLang;
 932
 933                                 $mto = $file->transform( array( 'width' => 120 ) );
 934                                 $this->addHeaderText(
 935                                         '<div class="thumb t' . $wgContLang->alignEnd() . '">' .
 936                                         Html::element( 'img', array(
 937                                                 'src' => $mto->getUrl(),
 938                                                 'class' => 'thumbimage',
 939                                         ) ) . '</div>', 'description' );
 940                         }
 941                 }
 942
 943                 $descriptor = array(
 944                         'DestFile' => array(
 945                                 'type' => 'text',
 946                                 'section' => 'description',
 947                                 'id' => 'wpDestFile',
 948                                 'label-message' => 'destfilename',
 949                                 'size' => 60,
 950                                 'default' => $this->mDestFile,
 951                                 # @todo FIXME: Hack to work around poor handling of the 'default' option in HTMLForm
 952                                 'nodata' => strval( $this->mDestFile ) !== '',
 953                         ),
 954                         'UploadDescription' => array(
 955                                 'type' => 'textarea',
 956                                 'section' => 'description',
 957                                 'id' => 'wpUploadDescription',
 958                                 'label-message' => $this->mForReUpload
 959                                         ? 'filereuploadsummary'
 960                                         : 'fileuploadsummary',
 961                                 'default' => $this->mComment,
 962                                 'cols' => $this->getUser()->getIntOption( 'cols' ),
 963                                 'rows' => 8,
 964                         )
 965                 );
 966                 if ( $this->mTextAfterSummary ) {
 967                         $descriptor['UploadFormTextAfterSummary'] = array(
 968                                 'type' => 'info',
 969                                 'section' => 'description',
 970                                 'default' => $this->mTextAfterSummary,
 971                                 'raw' => true,
 972                         );
 973                 }
 974
 975                 $descriptor += array(
 976                         'EditTools' => array(
 977                                 'type' => 'edittools',
 978                                 'section' => 'description',
 979                                 'message' => 'edittools-upload',
 980                         )
 981                 );
 982
 983                 if ( $this->mForReUpload ) {
 984                         $descriptor['DestFile']['readonly'] = true;
 985                 } else {
 986                         $descriptor['License'] = array(
 987                                 'type' => 'select',
 988                                 'class' => 'Licenses',
 989                                 'section' => 'description',
 990                                 'id' => 'wpLicense',
 991                                 'label-message' => 'license',
 992                         );
 993                 }
 994
 995                 global $wgUseCopyrightUpload;
 996                 if ( $wgUseCopyrightUpload ) {
 997                         $descriptor['UploadCopyStatus'] = array(
 998                                 'type' => 'text',
 999                                 'section' => 'description',
1000                                 'id' => 'wpUploadCopyStatus',
1001                                 'label-message' => 'filestatus',
1002                         );
1003                         $descriptor['UploadSource'] = array(
1004                                 'type' => 'text',
1005                                 'section' => 'description',
1006                                 'id' => 'wpUploadSource',
1007                                 'label-message' => 'filesource',
1008                         );
1009                 }
1010
1011                 return $descriptor;
1012         }
1013
1014         /**
1015          * Get the descriptor of the fieldset that contains the upload options,
1016          * such as "watch this file". The section is 'options'
1017          *
1018          * @return Array: descriptor array
1019          */
1020         protected function getOptionsSection() {
1021                 $user = $this->getUser();
1022                 if ( $user->isLoggedIn() ) {
1023                         $descriptor = array(
1024                                 'Watchthis' => array(
1025                                         'type' => 'check',
1026                                         'id' => 'wpWatchthis',
1027                                         'label-message' => 'watchthisupload',
1028                                         'section' => 'options',
1029                                         'default' => $user->getOption( 'watchcreations' ),
1030                                 )
1031                         );
1032                 }
1033                 if ( !$this->mHideIgnoreWarning ) {
1034                         $descriptor['IgnoreWarning'] = array(
1035                                 'type' => 'check',
1036                                 'id' => 'wpIgnoreWarning',
1037                                 'label-message' => 'ignorewarnings',
1038                                 'section' => 'options',
1039                         );
1040                 }
1041
1042                 $descriptor['DestFileWarningAck'] = array(
1043                         'type' => 'hidden',
1044                         'id' => 'wpDestFileWarningAck',
1045                         'default' => $this->mDestWarningAck ? '1' : '',
1046                 );
1047
1048                 if ( $this->mForReUpload ) {
1049                         $descriptor['ForReUpload'] = array(
1050                                 'type' => 'hidden',
1051                                 'id' => 'wpForReUpload',
1052                                 'default' => '1',
1053                         );
1054                 }
1055
1056                 return $descriptor;
1057         }
1058
1059         /**
1060          * Add the upload JS and show the form.
1061          */
1062         public function show() {
1063                 $this->addUploadJS();
1064                 parent::show();
1065         }
1066
1067         /**
1068          * Add upload JS to the OutputPage
1069          */
1070         protected function addUploadJS() {
1071                 global $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview, $wgEnableAPI, $wgStrictFileExtensions;
1072
1073                 $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
1074                 $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview && $wgEnableAPI;
1075                 $this->mMaxUploadSize['*'] = UploadBase::getMaxUploadSize();
1076
1077                 $scriptVars = array(
1078                         'wgAjaxUploadDestCheck' => $useAjaxDestCheck,
1079                         'wgAjaxLicensePreview' => $useAjaxLicensePreview,
1080                         'wgUploadAutoFill' => !$this->mForReUpload &&
1081                                 // If we received mDestFile from the request, don't autofill
1082                                 // the wpDestFile textbox
1083                                 $this->mDestFile === '',
1084                         'wgUploadSourceIds' => $this->mSourceIds,
1085                         'wgStrictFileExtensions' => $wgStrictFileExtensions,
1086                         'wgCapitalizeUploads' => MWNamespace::isCapitalized( NS_FILE ),
1087                         'wgMaxUploadSize' => $this->mMaxUploadSize,
1088                 );
1089
1090                 $out = $this->getOutput();
1091                 $out->addJsConfigVars( $scriptVars );
1092
1093                 $out->addModules( array(
1094                         'mediawiki.action.edit', // For <charinsert> support
1095                         'mediawiki.legacy.upload', // Old form stuff...
1096                         'mediawiki.special.upload', // Newer extras for thumbnail preview.
1097                 ) );
1098         }
1099
1100         /**
1101          * Empty function; submission is handled elsewhere.
1102          *
1103          * @return bool false
1104          */
1105         function trySubmit() {
1106                 return false;
1107         }
1108
1109 }
1110
1111 /**
1112  * A form field that contains a radio box in the label
1113  */
1114 class UploadSourceField extends HTMLTextField {
1115
1116         /**
1117          * @param $cellAttributes array
1118          * @return string
1119          */
1120         function getLabelHtml( $cellAttributes = array() ) {
1121                 $id = $this->mParams['id'];
1122                 $label = Html::rawElement( 'label', array( 'for' => $id ), $this->mLabel );
1123
1124                 if ( !empty( $this->mParams['radio'] ) ) {
1125                         $attribs = array(
1126                                 'name' => 'wpSourceType',
1127                                 'type' => 'radio',
1128                                 'id' => $id,
1129                                 'value' => $this->mParams['upload-type'],
1130                         );
1131                         if ( !empty( $this->mParams['checked'] ) ) {
1132                                 $attribs['checked'] = 'checked';
1133                         }
1134                         $label .= Html::element( 'input', $attribs );
1135                 }
1136
1137                 return Html::rawElement( 'td', array( 'class' => 'mw-label' ) + $cellAttributes, $label );
1138         }
1139
1140         /**
1141          * @return int
1142          */
1143         function getSize() {
1144                 return isset( $this->mParams['size'] )
1145                         ? $this->mParams['size']
1146                         : 60;
1147         }
1148 }