includes/specials/SpecialUpload.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  * @ingroup Upload
   6  *
   7  * Form for handling uploads and special page.
   8  */
   9
  10 class SpecialUpload extends SpecialPage {
  11         /**
  12          * Constructor : initialise object
  13          * Get data POSTed through the form and assign them to the object
  14          * @param $request WebRequest : data posted.
  15          */
  16         public function __construct( $request = null ) {
  17                 global $wgRequest;
  18
  19                 parent::__construct( 'Upload', 'upload' );
  20
  21                 $this->loadRequest( is_null( $request ) ? $wgRequest : $request );
  22         }
  23
  24         /** Misc variables **/
  25         protected $mRequest;                    // The WebRequest or FauxRequest this form is supposed to handle
  26         protected $mSourceType;
  27         protected $mUpload;
  28         protected $mLocalFile;
  29         protected $mUploadClicked;
  30
  31         /** User input variables from the "description" section **/
  32         public    $mDesiredDestName;    // The requested target file name
  33         protected $mComment;
  34         protected $mLicense;
  35
  36         /** User input variables from the root section **/
  37         protected $mIgnoreWarning;
  38         protected $mWatchThis;
  39         protected $mCopyrightStatus;
  40         protected $mCopyrightSource;
  41
  42         /** Hidden variables **/
  43         protected $mDestWarningAck;
  44         protected $mForReUpload;                // The user followed an "overwrite this file" link
  45         protected $mCancelUpload;               // The user clicked "Cancel and return to upload form" button
  46         protected $mTokenOk;
  47         protected $mUploadSuccessful = false;   // Subclasses can use this to determine whether a file was uploaded
  48
  49         /** Text injection points for hooks not using HTMLForm **/
  50         public $uploadFormTextTop;
  51         public $uploadFormTextAfterSummary;
  52
  53         /**
  54          * Initialize instance variables from request and create an Upload handler
  55          *
  56          * @param $request WebRequest: the request to extract variables from
  57          */
  58         protected function loadRequest( $request ) {
  59                 global $wgUser;
  60
  61                 $this->mRequest = $request;
  62                 $this->mSourceType        = $request->getVal( 'wpSourceType', 'file' );
  63                 $this->mUpload            = UploadBase::createFromRequest( $request );
  64                 $this->mUploadClicked     = $request->wasPosted()
  65                         && ( $request->getCheck( 'wpUpload' )
  66                                 || $request->getCheck( 'wpUploadIgnoreWarning' ) );
  67
  68                 // Guess the desired name from the filename if not provided
  69                 $this->mDesiredDestName   = $request->getText( 'wpDestFile' );
  70                 if( !$this->mDesiredDestName ) {
  71                         $this->mDesiredDestName = $request->getText( 'wpUploadFile' );
  72                 }
  73                 $this->mComment           = $request->getText( 'wpUploadDescription' );
  74                 $this->mLicense           = $request->getText( 'wpLicense' );
  75
  76
  77                 $this->mDestWarningAck    = $request->getText( 'wpDestFileWarningAck' );
  78                 $this->mIgnoreWarning     = $request->getCheck( 'wpIgnoreWarning' )
  79                         || $request->getCheck( 'wpUploadIgnoreWarning' );
  80                 $this->mWatchthis         = $request->getBool( 'wpWatchthis' ) && $wgUser->isLoggedIn();
  81                 $this->mCopyrightStatus   = $request->getText( 'wpUploadCopyStatus' );
  82                 $this->mCopyrightSource   = $request->getText( 'wpUploadSource' );
  83
  84
  85                 $this->mForReUpload       = $request->getBool( 'wpForReUpload' ); // updating a file
  86                 $this->mCancelUpload      = $request->getCheck( 'wpCancelUpload' )
  87                                          || $request->getCheck( 'wpReUpload' ); // b/w compat
  88
  89                 // If it was posted check for the token (no remote POST'ing with user credentials)
  90                 $token = $request->getVal( 'wpEditToken' );
  91                 if( $this->mSourceType == 'file' && $token == null ) {
  92                         // Skip token check for file uploads as that can't be faked via JS...
  93                         // Some client-side tools don't expect to need to send wpEditToken
  94                         // with their submissions, as that's new in 1.16.
  95                         $this->mTokenOk = true;
  96                 } else {
  97                         $this->mTokenOk = $wgUser->matchEditToken( $token );
  98                 }
  99
 100                 $this->uploadFormTextTop = '';
 101                 $this->uploadFormTextAfterSummary = '';
 102         }
 103
 104         /**
 105          * This page can be shown if uploading is enabled.
 106          * Handle permission checking elsewhere in order to be able to show
 107          * custom error messages.
 108          *
 109          * @param $user User object
 110          * @return Boolean
 111          */
 112         public function userCanExecute( $user ) {
 113                 return UploadBase::isEnabled() && parent::userCanExecute( $user );
 114         }
 115
 116         /**
 117          * Special page entry point
 118          */
 119         public function execute( $par ) {
 120                 global $wgUser, $wgOut, $wgRequest;
 121
 122                 $this->setHeaders();
 123                 $this->outputHeader();
 124
 125                 # Check uploading enabled
 126                 if( !UploadBase::isEnabled() ) {
 127                         $wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext' );
 128                         return;
 129                 }
 130
 131                 # Check permissions
 132                 global $wgGroupPermissions;
 133                 if( !$wgUser->isAllowed( 'upload' ) ) {
 134                         if( !$wgUser->isLoggedIn() && ( $wgGroupPermissions['user']['upload']
 135                                 || $wgGroupPermissions['autoconfirmed']['upload'] ) ) {
 136                                 // Custom message if logged-in users without any special rights can upload
 137                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 138                         } else {
 139                                 $wgOut->permissionRequired( 'upload' );
 140                         }
 141                         return;
 142                 }
 143
 144                 # Check blocks
 145                 if( $wgUser->isBlocked() ) {
 146                         $wgOut->blockedPage();
 147                         return;
 148                 }
 149
 150                 # Check whether we actually want to allow changing stuff
 151                 if( wfReadOnly() ) {
 152                         $wgOut->readOnlyPage();
 153                         return;
 154                 }
 155
 156                 # Unsave the temporary file in case this was a cancelled upload
 157                 if ( $this->mCancelUpload ) {
 158                         if ( !$this->unsaveUploadedFile() ) {
 159                                 # Something went wrong, so unsaveUploadedFile showed a warning
 160                                 return;
 161                         }
 162                 }
 163
 164                 # Process upload or show a form
 165                 if (
 166                         $this->mTokenOk && !$this->mCancelUpload &&
 167                         ( $this->mUpload && $this->mUploadClicked )
 168                 )
 169                 {
 170                         $this->processUpload();
 171                 } else {
 172                         # Backwards compatibility hook
 173                         if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) ) {
 174                                 wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 175                                 return;
 176                         }
 177
 178                         $this->showUploadForm( $this->getUploadForm() );
 179                 }
 180
 181                 # Cleanup
 182                 if ( $this->mUpload ) {
 183                         $this->mUpload->cleanupTempFile();
 184                 }
 185         }
 186
 187         /**
 188          * Show the main upload form
 189          *
 190          * @param $form Mixed: an HTMLForm instance or HTML string to show
 191          */
 192         protected function showUploadForm( $form ) {
 193                 # Add links if file was previously deleted
 194                 if ( !$this->mDesiredDestName ) {
 195                         $this->showViewDeletedLinks();
 196                 }
 197
 198                 if ( $form instanceof HTMLForm ) {
 199                         $form->show();
 200                 } else {
 201                         global $wgOut;
 202                         $wgOut->addHTML( $form );
 203                 }
 204
 205         }
 206
 207         /**
 208          * Get an UploadForm instance with title and text properly set.
 209          *
 210          * @param $message String: HTML string to add to the form
 211          * @param $sessionKey String: 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                 global $wgOut;
 217
 218                 # Initialize form
 219                 $form = new UploadForm( array(
 220                         'watch' => $this->getWatchCheck(),
 221                         'forreupload' => $this->mForReUpload,
 222                         'sessionkey' => $sessionKey,
 223                         'hideignorewarning' => $hideIgnoreWarning,
 224                         'destwarningack' => (bool)$this->mDestWarningAck,
 225
 226                         'texttop' => $this->uploadFormTextTop,
 227                         'textaftersummary' => $this->uploadFormTextAfterSummary,
 228                 ) );
 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                 {
 237                         $form->addPreText( wfMsgExt( 'session_fail_preview', 'parseinline' ) );
 238                 }
 239
 240                 # Add text to form
 241                 $form->addPreText( '<div id="uploadtext">' .
 242                         wfMsgExt( 'uploadtext', 'parse', array( $this->mDesiredDestName ) ) .
 243                         '</div>' );
 244                 # Add upload error message
 245                 $form->addPreText( $message );
 246
 247                 # Add footer to form
 248                 $uploadFooter = wfMsgNoTrans( 'uploadfooter' );
 249                 if ( $uploadFooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadFooter ) ) {
 250                         $form->addPostText( '<div id="mw-upload-footer-message">'
 251                                 . $wgOut->parse( $uploadFooter ) . "</div>\n" );
 252                 }
 253
 254                 return $form;
 255
 256         }
 257
 258         /**
 259          * Shows the "view X deleted revivions link""
 260          */
 261         protected function showViewDeletedLinks() {
 262                 global $wgOut, $wgUser;
 263
 264                 $title = Title::makeTitleSafe( NS_FILE, $this->mDesiredDestName );
 265                 // Show a subtitle link to deleted revisions (to sysops et al only)
 266                 if( $title instanceof Title ) {
 267                         $count = $title->isDeleted();
 268                         if ( $count > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) {
 269                                 $link = wfMsgExt(
 270                                         $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted',
 271                                         array( 'parse', 'replaceafter' ),
 272                                         $wgUser->getSkin()->linkKnown(
 273                                                 SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 274                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count )
 275                                         )
 276                                 );
 277                                 $wgOut->addHTML( "<div id=\"contentSub2\">{$link}</div>" );
 278                         }
 279                 }
 280
 281                 // Show the relevant lines from deletion log (for still deleted files only)
 282                 if( $title instanceof Title && $title->isDeletedQuick() && !$title->exists() ) {
 283                         $this->showDeletionLog( $wgOut, $title->getPrefixedText() );
 284                 }
 285         }
 286
 287         /**
 288          * Stashes the upload and shows the main upload form.
 289          *
 290          * Note: only errors that can be handled by changing the name or
 291          * description should be redirected here. It should be assumed that the
 292          * file itself is sane and has passed UploadBase::verifyFile. This
 293          * essentially means that UploadBase::VERIFICATION_ERROR and
 294          * UploadBase::EMPTY_FILE should not be passed here.
 295          *
 296          * @param $message String: HTML message to be passed to mainUploadForm
 297          */
 298         protected function showRecoverableUploadError( $message ) {
 299                 $sessionKey = $this->mUpload->stashSession();
 300                 $message = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" .
 301                         '<div class="error">' . $message . "</div>\n";
 302
 303                 $form = $this->getUploadForm( $message, $sessionKey );
 304                 $form->setSubmitText( wfMsg( 'upload-tryagain' ) );
 305                 $this->showUploadForm( $form );
 306         }
 307         /**
 308          * Stashes the upload, shows the main form, but adds an "continue anyway button".
 309          * Also checks whether there are actually warnings to display.
 310          *
 311          * @param $warnings Array
 312          * @return boolean true if warnings were displayed, false if there are no
 313          *      warnings and the should continue processing like there was no warning
 314          */
 315         protected function showUploadWarning( $warnings ) {
 316                 # If there are no warnings, or warnings we can ignore, return early.
 317                 # mDestWarningAck is set when some javascript has shown the warning
 318                 # to the user. mForReUpload is set when the user clicks the "upload a
 319                 # new version" link.
 320                 if ( !$warnings || ( count( $warnings ) == 1 &&
 321                         isset( $warnings['exists'] ) &&
 322                         ( $this->mDestWarningAck || $this->mForReUpload ) ) )
 323                 {
 324                         return false;
 325                 }
 326
 327                 $sessionKey = $this->mUpload->stashSession();
 328
 329                 $warningHtml = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n"
 330                         . '<ul class="warning">';
 331                 foreach( $warnings as $warning => $args ) {
 332                         $msg = '';
 333                         if( $warning == 'exists' ) {
 334                                 $msg = "\t<li>" . self::getExistsWarning( $args ) . "</li>\n";
 335                         } elseif( $warning == 'duplicate' ) {
 336                                 $msg = self::getDupeWarning( $args );
 337                         } elseif( $warning == 'duplicate-archive' ) {
 338                                 $msg = "\t<li>" . wfMsgExt( 'file-deleted-duplicate', 'parseinline',
 339                                                 array( Title::makeTitle( NS_FILE, $args )->getPrefixedText() ) )
 340                                         . "</li>\n";
 341                         } else {
 342                                 if ( $args === true ) {
 343                                         $args = array();
 344                                 } elseif ( !is_array( $args ) ) {
 345                                         $args = array( $args );
 346                                 }
 347                                 $msg = "\t<li>" . wfMsgExt( $warning, 'parseinline', $args ) . "</li>\n";
 348                         }
 349                         $warningHtml .= $msg;
 350                 }
 351                 $warningHtml .= "</ul>\n";
 352                 $warningHtml .= wfMsgExt( 'uploadwarning-text', 'parse' );
 353
 354                 $form = $this->getUploadForm( $warningHtml, $sessionKey, /* $hideIgnoreWarning */ true );
 355                 $form->setSubmitText( wfMsg( 'upload-tryagain' ) );
 356                 $form->addButton( 'wpUploadIgnoreWarning', wfMsg( 'ignorewarning' ) );
 357                 $form->addButton( 'wpCancelUpload', wfMsg( 'reuploaddesc' ) );
 358
 359                 $this->showUploadForm( $form );
 360
 361                 # Indicate that we showed a form
 362                 return true;
 363         }
 364
 365         /**
 366          * Show the upload form with error message, but do not stash the file.
 367          *
 368          * @param $message HTML string
 369          */
 370         protected function showUploadError( $message ) {
 371                 $message = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" .
 372                         '<div class="error">' . $message . "</div>\n";
 373                 $this->showUploadForm( $this->getUploadForm( $message ) );
 374         }
 375
 376         /**
 377          * Do the upload.
 378          * Checks are made in SpecialUpload::execute()
 379          */
 380         protected function processUpload() {
 381                 global $wgUser, $wgOut;
 382
 383                 // Verify permissions
 384                 $permErrors = $this->mUpload->verifyPermissions( $wgUser );
 385                 if( $permErrors !== true ) {
 386                         $wgOut->showPermissionsErrorPage( $permErrors );
 387                         return;
 388                 }
 389
 390                 // Fetch the file if required
 391                 $status = $this->mUpload->fetchFile();
 392                 if( !$status->isOK() ) {
 393                         $this->showUploadError( $wgOut->parse( $status->getWikiText() ) );
 394                         return;
 395                 }
 396
 397                 // Deprecated backwards compatibility hook
 398                 if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) ) {
 399                         wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file.\n" );
 400                         return array( 'status' => UploadBase::BEFORE_PROCESSING );
 401                 }
 402
 403
 404                 // Upload verification
 405                 $details = $this->mUpload->verifyUpload();
 406                 if ( $details['status'] != UploadBase::OK ) {
 407                         $this->processVerificationError( $details );
 408                         return;
 409                 }
 410
 411                 $this->mLocalFile = $this->mUpload->getLocalFile();
 412
 413                 // Check warnings if necessary
 414                 if( !$this->mIgnoreWarning ) {
 415                         $warnings = $this->mUpload->checkWarnings();
 416                         if( $this->showUploadWarning( $warnings ) ) {
 417                                 return;
 418                         }
 419                 }
 420
 421                 // Get the page text if this is not a reupload
 422                 if( !$this->mForReUpload ) {
 423                         $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 424                                 $this->mCopyrightStatus, $this->mCopyrightSource );
 425                 } else {
 426                         $pageText = false;
 427                 }
 428                 $status = $this->mUpload->performUpload( $this->mComment, $pageText, $this->mWatchthis, $wgUser );
 429                 if ( !$status->isGood() ) {
 430                         $this->showUploadError( $wgOut->parse( $status->getWikiText() ) );
 431                         return;
 432                 }
 433
 434                 // Success, redirect to description page
 435                 $this->mUploadSuccessful = true;
 436                 wfRunHooks( 'SpecialUploadComplete', array( &$this ) );
 437                 $wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
 438         }
 439
 440         /**
 441          * Get the initial image page text based on a comment and optional file status information
 442          */
 443         public static function getInitialPageText( $comment = '', $license = '', $copyStatus = '', $source = '' ) {
 444                 global $wgUseCopyrightUpload;
 445                 if ( $wgUseCopyrightUpload ) {
 446                         $licensetxt = '';
 447                         if ( $license != '' ) {
 448                                 $licensetxt = '== ' . wfMsgForContent( 'license-header' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 449                         }
 450                         $pageText = '== ' . wfMsgForContent( 'filedesc' ) . " ==\n" . $comment . "\n" .
 451                                 '== ' . wfMsgForContent( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
 452                                 "$licensetxt" .
 453                                 '== ' . wfMsgForContent( 'filesource' ) . " ==\n" . $source;
 454                 } else {
 455                         if ( $license != '' ) {
 456                                 $filedesc = $comment == '' ? '' : '== ' . wfMsgForContent( 'filedesc' ) . " ==\n" . $comment . "\n";
 457                                         $pageText = $filedesc .
 458                                         '== ' . wfMsgForContent( 'license-header' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 459                         } else {
 460                                 $pageText = $comment;
 461                         }
 462                 }
 463                 return $pageText;
 464         }
 465
 466         /**
 467          * See if we should check the 'watch this page' checkbox on the form
 468          * based on the user's preferences and whether we're being asked
 469          * to create a new file or update an existing one.
 470          *
 471          * In the case where 'watch edits' is off but 'watch creations' is on,
 472          * we'll leave the box unchecked.
 473          *
 474          * Note that the page target can be changed *on the form*, so our check
 475          * state can get out of sync.
 476          */
 477         protected function getWatchCheck() {
 478                 global $wgUser;
 479                 if( $wgUser->getOption( 'watchdefault' ) ) {
 480                         // Watch all edits!
 481                         return true;
 482                 }
 483
 484                 $local = wfLocalFile( $this->mDesiredDestName );
 485                 if( $local && $local->exists() ) {
 486                         // We're uploading a new version of an existing file.
 487                         // No creation, so don't watch it if we're not already.
 488                         return $local->getTitle()->userIsWatching();
 489                 } else {
 490                         // New page should get watched if that's our option.
 491                         return $wgUser->getOption( 'watchcreations' );
 492                 }
 493         }
 494
 495
 496         /**
 497          * Provides output to the user for a result of UploadBase::verifyUpload
 498          *
 499          * @param $details Array: result of UploadBase::verifyUpload
 500          */
 501         protected function processVerificationError( $details ) {
 502                 global $wgFileExtensions, $wgLang;
 503
 504                 switch( $details['status'] ) {
 505
 506                         /** Statuses that only require name changing **/
 507                         case UploadBase::MIN_LENGTH_PARTNAME:
 508                                 $this->showRecoverableUploadError( wfMsgHtml( 'minlength1' ) );
 509                                 break;
 510                         case UploadBase::ILLEGAL_FILENAME:
 511                                 $this->showRecoverableUploadError( wfMsgExt( 'illegalfilename',
 512                                         'parseinline', $details['filtered'] ) );
 513                                 break;
 514                         case UploadBase::OVERWRITE_EXISTING_FILE:
 515                                 $this->showRecoverableUploadError( wfMsgExt( $details['overwrite'],
 516                                         'parseinline' ) );
 517                                 break;
 518                         case UploadBase::FILETYPE_MISSING:
 519                                 $this->showRecoverableUploadError( wfMsgExt( 'filetype-missing',
 520                                         'parseinline' ) );
 521                                 break;
 522
 523                         /** Statuses that require reuploading **/
 524                         case UploadBase::EMPTY_FILE:
 525                                 $this->showUploadError( wfMsgHtml( 'emptyfile' ) );
 526                                 break;
 527                         case UploadBase::FILESIZE_TOO_LARGE:
 528                                 $this->showUploadError( wfMsgHtml( 'largefileserver' ) );
 529                                 break;
 530                         case UploadBase::FILETYPE_BADTYPE:
 531                                 $finalExt = $details['finalExt'];
 532                                 $this->showUploadError(
 533                                         wfMsgExt( 'filetype-banned-type',
 534                                                 array( 'parseinline' ),
 535                                                 htmlspecialchars( $finalExt ),
 536                                                 implode(
 537                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 538                                                         $wgFileExtensions
 539                                                 ),
 540                                                 $wgLang->formatNum( count( $wgFileExtensions ) )
 541                                         )
 542                                 );
 543                                 break;
 544                         case UploadBase::VERIFICATION_ERROR:
 545                                 unset( $details['status'] );
 546                                 $code = array_shift( $details['details'] );
 547                                 $this->showUploadError( wfMsgExt( $code, 'parseinline', $details['details'] ) );
 548                                 break;
 549                         case UploadBase::HOOK_ABORTED:
 550                                 if ( is_array( $details['error'] ) ) { # allow hooks to return error details in an array
 551                                         $args = $details['error'];
 552                                         $error = array_shift( $args );
 553                                 } else {
 554                                         $error = $details['error'];
 555                                         $args = null;
 556                                 }
 557
 558                                 $this->showUploadError( wfMsgExt( $error, 'parseinline', $args ) );
 559                                 break;
 560                         default:
 561                                 throw new MWException( __METHOD__ . ": Unknown value `{$details['status']}`" );
 562                 }
 563         }
 564
 565         /**
 566          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 567          *
 568          * @return Boolean: success
 569          */
 570         protected function unsaveUploadedFile() {
 571                 global $wgOut;
 572                 if ( !( $this->mUpload instanceof UploadFromStash ) ) {
 573                         return true;
 574                 }
 575                 $success = $this->mUpload->unsaveUploadedFile();
 576                 if ( !$success ) {
 577                         $wgOut->showFileDeleteError( $this->mUpload->getTempPath() );
 578                         return false;
 579                 } else {
 580                         return true;
 581                 }
 582         }
 583
 584         /*** Functions for formatting warnings ***/
 585
 586         /**
 587          * Formats a result of UploadBase::getExistsWarning as HTML
 588          * This check is static and can be done pre-upload via AJAX
 589          *
 590          * @param $exists Array: the result of UploadBase::getExistsWarning
 591          * @return String: empty string if there is no warning or an HTML fragment
 592          */
 593         public static function getExistsWarning( $exists ) {
 594                 global $wgUser, $wgContLang;
 595
 596                 if ( !$exists ) {
 597                         return '';
 598                 }
 599
 600                 $file = $exists['file'];
 601                 $filename = $file->getTitle()->getPrefixedText();
 602                 $warning = '';
 603
 604                 $sk = $wgUser->getSkin();
 605
 606                 if( $exists['warning'] == 'exists' ) {
 607                         // Exact match
 608                         $warning = wfMsgExt( 'fileexists', 'parseinline', $filename );
 609                 } elseif( $exists['warning'] == 'page-exists' ) {
 610                         // Page exists but file does not
 611                         $warning = wfMsgExt( 'filepageexists', 'parseinline', $filename );
 612                 } elseif ( $exists['warning'] == 'exists-normalized' ) {
 613                         $warning = wfMsgExt( 'fileexists-extension', 'parseinline', $filename,
 614                                 $exists['normalizedFile']->getTitle()->getPrefixedText() );
 615                 } elseif ( $exists['warning'] == 'thumb' ) {
 616                         // Swapped argument order compared with other messages for backwards compatibility
 617                         $warning = wfMsgExt( 'fileexists-thumbnail-yes', 'parseinline',
 618                                 $exists['thumbFile']->getTitle()->getPrefixedText(), $filename );
 619                 } elseif ( $exists['warning'] == 'thumb-name' ) {
 620                         // Image w/o '180px-' does not exists, but we do not like these filenames
 621                         $name = $file->getName();
 622                         $badPart = substr( $name, 0, strpos( $name, '-' ) + 1 );
 623                         $warning = wfMsgExt( 'file-thumbnail-no', 'parseinline', $badPart );
 624                 } elseif ( $exists['warning'] == 'bad-prefix' ) {
 625                         $warning = wfMsgExt( 'filename-bad-prefix', 'parseinline', $exists['prefix'] );
 626                 } elseif ( $exists['warning'] == 'was-deleted' ) {
 627                         # If the file existed before and was deleted, warn the user of this
 628                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 629                         $llink = $sk->linkKnown(
 630                                 $ltitle,
 631                                 wfMsgHtml( 'deletionlog' ),
 632                                 array(),
 633                                 array(
 634                                         'type' => 'delete',
 635                                         'page' => $filename
 636                                 )
 637                         );
 638                         $warning = wfMsgWikiHtml( 'filewasdeleted', $llink );
 639                 }
 640
 641                 return $warning;
 642         }
 643
 644         /**
 645          * Get a list of warnings
 646          *
 647          * @param $filename String: local filename, e.g. 'file exists', 'non-descriptive filename'
 648          * @return Array: list of warning messages
 649          */
 650         public static function ajaxGetExistsWarning( $filename ) {
 651                 $file = wfFindFile( $filename );
 652                 if( !$file ) {
 653                         // Force local file so we have an object to do further checks against
 654                         // if there isn't an exact match...
 655                         $file = wfLocalFile( $filename );
 656                 }
 657                 $s = '&nbsp;';
 658                 if ( $file ) {
 659                         $exists = UploadBase::getExistsWarning( $file );
 660                         $warning = self::getExistsWarning( $exists );
 661                         if ( $warning !== '' ) {
 662                                 $s = "<div>$warning</div>";
 663                         }
 664                 }
 665                 return $s;
 666         }
 667
 668         /**
 669          * Construct a warning and a gallery from an array of duplicate files.
 670          */
 671         public static function getDupeWarning( $dupes ) {
 672                 if( $dupes ) {
 673                         global $wgOut;
 674                         $msg = '<gallery>';
 675                         foreach( $dupes as $file ) {
 676                                 $title = $file->getTitle();
 677                                 $msg .= $title->getPrefixedText() .
 678                                         '|' . $title->getText() . "\n";
 679                         }
 680                         $msg .= '</gallery>';
 681                         return '<li>' .
 682                                 wfMsgExt( 'file-exists-duplicate', array( 'parse' ), count( $dupes ) ) .
 683                                 $wgOut->parse( $msg ) .
 684                                 "</li>\n";
 685                 } else {
 686                         return '';
 687                 }
 688         }
 689
 690 }
 691
 692 /**
 693  * Sub class of HTMLForm that provides the form section of SpecialUpload
 694  */
 695 class UploadForm extends HTMLForm {
 696         protected $mWatch;
 697         protected $mForReUpload;
 698         protected $mSessionKey;
 699         protected $mHideIgnoreWarning;
 700         protected $mDestWarningAck;
 701
 702         protected $mTextTop;
 703         protected $mTextAfterSummary;
 704
 705         protected $mSourceIds;
 706
 707         public function __construct( $options = array() ) {
 708                 $this->mWatch = !empty( $options['watch'] );
 709                 $this->mForReUpload = !empty( $options['forreupload'] );
 710                 $this->mSessionKey = isset( $options['sessionkey'] )
 711                                 ? $options['sessionkey'] : '';
 712                 $this->mHideIgnoreWarning = !empty( $options['hideignorewarning'] );
 713                 $this->mDestWarningAck = !empty( $options['destwarningack'] );
 714
 715                 $this->mTextTop = $options['texttop'];
 716                 $this->mTextAfterSummary = $options['textaftersummary'];
 717
 718                 $sourceDescriptor = $this->getSourceSection();
 719                 $descriptor = $sourceDescriptor
 720                         + $this->getDescriptionSection()
 721                         + $this->getOptionsSection();
 722
 723                 wfRunHooks( 'UploadFormInitDescriptor', array( &$descriptor ) );
 724                 parent::__construct( $descriptor, 'upload' );
 725
 726                 # Set some form properties
 727                 $this->setSubmitText( wfMsg( 'uploadbtn' ) );
 728                 $this->setSubmitName( 'wpUpload' );
 729                 $this->setSubmitTooltip( 'upload' );
 730                 $this->setId( 'mw-upload-form' );
 731
 732                 # Build a list of IDs for javascript insertion
 733                 $this->mSourceIds = array();
 734                 foreach ( $sourceDescriptor as $key => $field ) {
 735                         if ( !empty( $field['id'] ) ) {
 736                                 $this->mSourceIds[] = $field['id'];
 737                         }
 738                 }
 739
 740         }
 741
 742         /**
 743          * Get the descriptor of the fieldset that contains the file source
 744          * selection. The section is 'source'
 745          *
 746          * @return Array: descriptor array
 747          */
 748         protected function getSourceSection() {
 749                 global $wgLang, $wgUser, $wgRequest;
 750                 global $wgMaxUploadSize;
 751
 752                 if ( $this->mSessionKey ) {
 753                         return array(
 754                                 'wpSessionKey' => array(
 755                                         'type' => 'hidden',
 756                                         'default' => $this->mSessionKey,
 757                                 ),
 758                                 'wpSourceType' => array(
 759                                         'type' => 'hidden',
 760                                         'default' => 'Stash',
 761                                 ),
 762                         );
 763                 }
 764
 765                 $canUploadByUrl = UploadFromUrl::isEnabled() && $wgUser->isAllowed( 'upload_by_url' );
 766                 $radio = $canUploadByUrl;
 767                 $selectedSourceType = strtolower( $wgRequest->getText( 'wpSourceType', 'File' ) );
 768
 769                 $descriptor = array();
 770                 if ( $this->mTextTop ) {
 771                         $descriptor['UploadFormTextTop'] = array(
 772                                 'type' => 'info',
 773                                 'section' => 'source',
 774                                 'default' => $this->mTextTop,
 775                                 'raw' => true,
 776                         );
 777                 }
 778
 779                 $descriptor['UploadFile'] = array(
 780                         'class' => 'UploadSourceField',
 781                         'section' => 'source',
 782                         'type' => 'file',
 783                         'id' => 'wpUploadFile',
 784                         'label-message' => 'sourcefilename',
 785                         'upload-type' => 'File',
 786                         'radio' => &$radio,
 787                         'help' => wfMsgExt( 'upload-maxfilesize',
 788                                         array( 'parseinline', 'escapenoentities' ),
 789                                         $wgLang->formatSize(
 790                                                 wfShorthandToInteger( min(
 791                                                         wfShorthandToInteger(
 792                                                                 ini_get( 'upload_max_filesize' )
 793                                                         ), $wgMaxUploadSize
 794                                                 ) )
 795                                         )
 796                                 ) . ' ' . wfMsgHtml( 'upload_source_file' ),
 797                         'checked' => $selectedSourceType == 'file',
 798                 );
 799                 if ( $canUploadByUrl ) {
 800                         $descriptor['UploadFileURL'] = array(
 801                                 'class' => 'UploadSourceField',
 802                                 'section' => 'source',
 803                                 'id' => 'wpUploadFileURL',
 804                                 'label-message' => 'sourceurl',
 805                                 'upload-type' => 'url',
 806                                 'radio' => &$radio,
 807                                 'help' => wfMsgExt( 'upload-maxfilesize',
 808                                                 array( 'parseinline', 'escapenoentities' ),
 809                                                 $wgLang->formatSize( $wgMaxUploadSize )
 810                                         ) . ' ' . wfMsgHtml( 'upload_source_url' ),
 811                                 'checked' => $selectedSourceType == 'url',
 812                         );
 813                 }
 814                 wfRunHooks( 'UploadFormSourceDescriptors', array( &$descriptor, &$radio, $selectedSourceType ) );
 815
 816                 $descriptor['Extensions'] = array(
 817                         'type' => 'info',
 818                         'section' => 'source',
 819                         'default' => $this->getExtensionsMessage(),
 820                         'raw' => true,
 821                 );
 822                 return $descriptor;
 823         }
 824
 825         /**
 826          * Get the messages indicating which extensions are preferred and prohibitted.
 827          *
 828          * @return String: HTML string containing the message
 829          */
 830         protected function getExtensionsMessage() {
 831                 # Print a list of allowed file extensions, if so configured.  We ignore
 832                 # MIME type here, it's incomprehensible to most people and too long.
 833                 global $wgLang, $wgCheckFileExtensions, $wgStrictFileExtensions,
 834                 $wgFileExtensions, $wgFileBlacklist;
 835
 836                 $allowedExtensions = '';
 837                 if( $wgCheckFileExtensions ) {
 838                         if( $wgStrictFileExtensions ) {
 839                                 # Everything not permitted is banned
 840                                 $extensionsList =
 841                                         '<div id="mw-upload-permitted">' .
 842                                         wfMsgWikiHtml( 'upload-permitted', $wgLang->commaList( $wgFileExtensions ) ) .
 843                                         "</div>\n";
 844                         } else {
 845                                 # We have to list both preferred and prohibited
 846                                 $extensionsList =
 847                                         '<div id="mw-upload-preferred">' .
 848                                         wfMsgWikiHtml( 'upload-preferred', $wgLang->commaList( $wgFileExtensions ) ) .
 849                                         "</div>\n" .
 850                                         '<div id="mw-upload-prohibited">' .
 851                                         wfMsgWikiHtml( 'upload-prohibited', $wgLang->commaList( $wgFileBlacklist ) ) .
 852                                         "</div>\n";
 853                         }
 854                 } else {
 855                         # Everything is permitted.
 856                         $extensionsList = '';
 857                 }
 858                 return $extensionsList;
 859         }
 860
 861         /**
 862          * Get the descriptor of the fieldset that contains the file description
 863          * input. The section is 'description'
 864          *
 865          * @return Array: descriptor array
 866          */
 867         protected function getDescriptionSection() {
 868                 global $wgUser, $wgOut;
 869
 870                 $cols = intval( $wgUser->getOption( 'cols' ) );
 871                 if( $wgUser->getOption( 'editwidth' ) ) {
 872                         $wgOut->addInlineStyle( '#mw-htmlform-description { width: 100%; }' );
 873                 }
 874
 875                 $descriptor = array(
 876                         'DestFile' => array(
 877                                 'type' => 'text',
 878                                 'section' => 'description',
 879                                 'id' => 'wpDestFile',
 880                                 'label-message' => 'destfilename',
 881                                 'size' => 60,
 882                         ),
 883                         'UploadDescription' => array(
 884                                 'type' => 'textarea',
 885                                 'section' => 'description',
 886                                 'id' => 'wpUploadDescription',
 887                                 'label-message' => $this->mForReUpload
 888                                         ? 'filereuploadsummary'
 889                                         : 'fileuploadsummary',
 890                                 'cols' => $cols,
 891                                 'rows' => 8,
 892                         )
 893                 );
 894                 if ( $this->mTextAfterSummary ) {
 895                         $descriptor['UploadFormTextAfterSummary'] = array(
 896                                 'type' => 'info',
 897                                 'section' => 'description',
 898                                 'default' => $this->mTextAfterSummary,
 899                                 'raw' => true,
 900                         );
 901                 }
 902
 903                 $descriptor += array(
 904                         'EditTools' => array(
 905                                 'type' => 'edittools',
 906                                 'section' => 'description',
 907                         ),
 908                         'License' => array(
 909                                 'type' => 'select',
 910                                 'class' => 'Licenses',
 911                                 'section' => 'description',
 912                                 'id' => 'wpLicense',
 913                                 'label-message' => 'license',
 914                         ),
 915                 );
 916                 if ( $this->mForReUpload ) {
 917                         $descriptor['DestFile']['readonly'] = true;
 918                 }
 919
 920                 global $wgUseCopyrightUpload;
 921                 if ( $wgUseCopyrightUpload ) {
 922                         $descriptor['UploadCopyStatus'] = array(
 923                                 'type' => 'text',
 924                                 'section' => 'description',
 925                                 'id' => 'wpUploadCopyStatus',
 926                                 'label-message' => 'filestatus',
 927                         );
 928                         $descriptor['UploadSource'] = array(
 929                                 'type' => 'text',
 930                                 'section' => 'description',
 931                                 'id' => 'wpUploadSource',
 932                                 'label-message' => 'filesource',
 933                         );
 934                 }
 935
 936                 return $descriptor;
 937         }
 938
 939         /**
 940          * Get the descriptor of the fieldset that contains the upload options,
 941          * such as "watch this file". The section is 'options'
 942          *
 943          * @return Array: descriptor array
 944          */
 945         protected function getOptionsSection() {
 946                 global $wgUser;
 947
 948                 if ( $wgUser->isLoggedIn() ) {
 949                         $descriptor = array(
 950                                 'Watchthis' => array(
 951                                         'type' => 'check',
 952                                         'id' => 'wpWatchthis',
 953                                         'label-message' => 'watchthisupload',
 954                                         'section' => 'options',
 955                                         'default' => $wgUser->getOption( 'watchcreations' ),
 956                                 )
 957                         );
 958                 }
 959                 if ( !$this->mHideIgnoreWarning ) {
 960                         $descriptor['IgnoreWarning'] = array(
 961                                 'type' => 'check',
 962                                 'id' => 'wpIgnoreWarning',
 963                                 'label-message' => 'ignorewarnings',
 964                                 'section' => 'options',
 965                         );
 966                 }
 967
 968                 $descriptor['wpDestFileWarningAck'] = array(
 969                         'type' => 'hidden',
 970                         'id' => 'wpDestFileWarningAck',
 971                         'default' => $this->mDestWarningAck ? '1' : '',
 972                 );
 973
 974                 if ( $this->mForReUpload ) {
 975                         $descriptor['wpForReUpload'] = array(
 976                                 'type' => 'hidden',
 977                                 'id' => 'wpForReUpload',
 978                                 'default' => '1',
 979                         );
 980                 }
 981
 982                 return $descriptor;
 983         }
 984
 985         /**
 986          * Add the upload JS and show the form.
 987          */
 988         public function show() {
 989                 $this->addUploadJS();
 990                 parent::show();
 991         }
 992
 993         /**
 994          * Add upload JS to $wgOut
 995          */
 996         protected function addUploadJS() {
 997                 global $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview, $wgEnableAPI;
 998                 global $wgOut;
 999
1000                 $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
1001                 $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview && $wgEnableAPI;
1002
1003                 $scriptVars = array(
1004                         'wgAjaxUploadDestCheck' => $useAjaxDestCheck,
1005                         'wgAjaxLicensePreview' => $useAjaxLicensePreview,
1006                         'wgUploadAutoFill' => !$this->mForReUpload,
1007                         'wgUploadSourceIds' => $this->mSourceIds,
1008                 );
1009
1010                 $wgOut->addScript( Skin::makeVariablesScript( $scriptVars ) );
1011
1012                 // For <charinsert> support
1013                 $wgOut->addScriptFile( 'edit.js' );
1014                 $wgOut->addScriptFile( 'upload.js' );
1015         }
1016
1017         /**
1018          * Empty function; submission is handled elsewhere.
1019          *
1020          * @return bool false
1021          */
1022         function trySubmit() {
1023                 return false;
1024         }
1025
1026 }
1027
1028 /**
1029  * A form field that contains a radio box in the label
1030  */
1031 class UploadSourceField extends HTMLTextField {
1032         function getLabelHtml() {
1033                 $id = "wpSourceType{$this->mParams['upload-type']}";
1034                 $label = Html::rawElement( 'label', array( 'for' => $id ), $this->mLabel );
1035
1036                 if ( !empty( $this->mParams['radio'] ) ) {
1037                         $attribs = array(
1038                                 'name' => 'wpSourceType',
1039                                 'type' => 'radio',
1040                                 'id' => $id,
1041                                 'value' => $this->mParams['upload-type'],
1042                         );
1043                         if ( !empty( $this->mParams['checked'] ) ) {
1044                                 $attribs['checked'] = 'checked';
1045                         }
1046                         $label .= Html::element( 'input', $attribs );
1047                 }
1048
1049                 return Html::rawElement( 'td', array( 'class' => 'mw-label' ), $label );
1050         }
1051
1052         function getSize() {
1053                 return isset( $this->mParams['size'] )
1054                         ? $this->mParams['size']
1055                         : 60;
1056         }
1057 }
1058