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                 global $wgRequest;
  39
  40                 parent::__construct( 'Upload', 'upload' );
  41
  42                 $this->loadRequest( is_null( $request ) ? $wgRequest : $request );
  43         }
  44
  45         /** Misc variables **/
  46         public $mRequest;                       // The WebRequest or FauxRequest this form is supposed to handle
  47         public $mSourceType;
  48         public $mUpload;
  49         public $mLocalFile;
  50         public $mUploadClicked;
  51
  52         /** User input variables from the "description" section **/
  53         public $mDesiredDestName;       // The requested target file name
  54         public $mComment;
  55         public $mLicense;
  56
  57         /** User input variables from the root section **/
  58         public $mIgnoreWarning;
  59         public $mWatchThis;
  60         public $mCopyrightStatus;
  61         public $mCopyrightSource;
  62
  63         /** Hidden variables **/
  64         public $mDestWarningAck;
  65         public $mForReUpload;           // The user followed an "overwrite this file" link
  66         public $mCancelUpload;          // The user clicked "Cancel and return to upload form" button
  67         public $mTokenOk;
  68         public $mUploadSuccessful = false;      // Subclasses can use this to determine whether a file was uploaded
  69
  70         /** Text injection points for hooks not using HTMLForm **/
  71         public $uploadFormTextTop;
  72         public $uploadFormTextAfterSummary;
  73
  74         /**
  75          * Initialize instance variables from request and create an Upload handler
  76          *
  77          * @param $request WebRequest: the request to extract variables from
  78          */
  79         protected function loadRequest( $request ) {
  80                 global $wgUser;
  81
  82                 $this->mRequest = $request;
  83                 $this->mSourceType        = $request->getVal( 'wpSourceType', 'file' );
  84                 $this->mUpload            = UploadBase::createFromRequest( $request );
  85                 $this->mUploadClicked     = $request->wasPosted()
  86                         && ( $request->getCheck( 'wpUpload' )
  87                                 || $request->getCheck( 'wpUploadIgnoreWarning' ) );
  88
  89                 // Guess the desired name from the filename if not provided
  90                 $this->mDesiredDestName   = $request->getText( 'wpDestFile' );
  91                 if( !$this->mDesiredDestName && $request->getFileName( 'wpUploadFile' ) !== null ) {
  92                         $this->mDesiredDestName = $request->getFileName( 'wpUploadFile' );
  93                 }
  94                 $this->mComment           = $request->getText( 'wpUploadDescription' );
  95                 $this->mLicense           = $request->getText( 'wpLicense' );
  96
  97
  98                 $this->mDestWarningAck    = $request->getText( 'wpDestFileWarningAck' );
  99                 $this->mIgnoreWarning     = $request->getCheck( 'wpIgnoreWarning' )
 100                         || $request->getCheck( 'wpUploadIgnoreWarning' );
 101                 $this->mWatchthis         = $request->getBool( 'wpWatchthis' ) && $wgUser->isLoggedIn();
 102                 $this->mCopyrightStatus   = $request->getText( 'wpUploadCopyStatus' );
 103                 $this->mCopyrightSource   = $request->getText( 'wpUploadSource' );
 104
 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                 if( $this->mSourceType == 'file' && $token == null ) {
 113                         // Skip token check for file uploads as that can't be faked via JS...
 114                         // Some client-side tools don't expect to need to send wpEditToken
 115                         // with their submissions, as that's new in 1.16.
 116                         $this->mTokenOk = true;
 117                 } else {
 118                         $this->mTokenOk = $wgUser->matchEditToken( $token );
 119                 }
 120
 121                 $this->uploadFormTextTop = '';
 122                 $this->uploadFormTextAfterSummary = '';
 123         }
 124
 125         /**
 126          * This page can be shown if uploading is enabled.
 127          * Handle permission checking elsewhere in order to be able to show
 128          * custom error messages.
 129          *
 130          * @param $user User object
 131          * @return Boolean
 132          */
 133         public function userCanExecute( $user ) {
 134                 return UploadBase::isEnabled() && parent::userCanExecute( $user );
 135         }
 136
 137         /**
 138          * Special page entry point
 139          */
 140         public function execute( $par ) {
 141                 global $wgUser, $wgOut;
 142
 143                 $this->setHeaders();
 144                 $this->outputHeader();
 145
 146                 # Check uploading enabled
 147                 if( !UploadBase::isEnabled() ) {
 148                         $wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext' );
 149                         return;
 150                 }
 151
 152                 # Check permissions
 153                 global $wgGroupPermissions;
 154                 $permissionRequired = UploadBase::isAllowed( $wgUser );
 155                 if( $permissionRequired !== true ) {
 156                         if( !$wgUser->isLoggedIn() && ( $wgGroupPermissions['user']['upload']
 157                                 || $wgGroupPermissions['autoconfirmed']['upload'] ) ) {
 158                                 // Custom message if logged-in users without any special rights can upload
 159                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 160                         } else {
 161                                 $wgOut->permissionRequired( $permissionRequired );
 162                         }
 163                         return;
 164                 }
 165
 166                 # Check blocks
 167                 if( $wgUser->isBlocked() ) {
 168                         $wgOut->blockedPage();
 169                         return;
 170                 }
 171
 172                 # Check whether we actually want to allow changing stuff
 173                 if( wfReadOnly() ) {
 174                         $wgOut->readOnlyPage();
 175                         return;
 176                 }
 177
 178                 # Unsave the temporary file in case this was a cancelled upload
 179                 if ( $this->mCancelUpload ) {
 180                         if ( !$this->unsaveUploadedFile() ) {
 181                                 # Something went wrong, so unsaveUploadedFile showed a warning
 182                                 return;
 183                         }
 184                 }
 185
 186                 # Process upload or show a form
 187                 if (
 188                         $this->mTokenOk && !$this->mCancelUpload &&
 189                         ( $this->mUpload && $this->mUploadClicked )
 190                 )
 191                 {
 192                         $this->processUpload();
 193                 } else {
 194                         # Backwards compatibility hook
 195                         if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) ) {
 196                                 wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 197                                 return;
 198                         }
 199
 200
 201                         $this->showUploadForm( $this->getUploadForm() );
 202                 }
 203
 204                 # Cleanup
 205                 if ( $this->mUpload ) {
 206                         $this->mUpload->cleanupTempFile();
 207                 }
 208         }
 209
 210         /**
 211          * Show the main upload form
 212          *
 213          * @param $form Mixed: an HTMLForm instance or HTML string to show
 214          */
 215         protected function showUploadForm( $form ) {
 216                 # Add links if file was previously deleted
 217                 if ( !$this->mDesiredDestName ) {
 218                         $this->showViewDeletedLinks();
 219                 }
 220
 221                 if ( $form instanceof HTMLForm ) {
 222                         $form->show();
 223                 } else {
 224                         global $wgOut;
 225                         $wgOut->addHTML( $form );
 226                 }
 227
 228         }
 229
 230         /**
 231          * Get an UploadForm instance with title and text properly set.
 232          *
 233          * @param $message String: HTML string to add to the form
 234          * @param $sessionKey String: session key in case this is a stashed upload
 235          * @param $hideIgnoreWarning Boolean: whether to hide "ignore warning" check box
 236          * @return UploadForm
 237          */
 238         protected function getUploadForm( $message = '', $sessionKey = '', $hideIgnoreWarning = false ) {
 239                 global $wgOut;
 240
 241                 # Initialize form
 242                 $form = new UploadForm( array(
 243                         'watch' => $this->getWatchCheck(),
 244                         'forreupload' => $this->mForReUpload,
 245                         'sessionkey' => $sessionKey,
 246                         'hideignorewarning' => $hideIgnoreWarning,
 247                         'destwarningack' => (bool)$this->mDestWarningAck,
 248
 249                         'texttop' => $this->uploadFormTextTop,
 250                         'textaftersummary' => $this->uploadFormTextAfterSummary,
 251                         'destfile' => $this->mDesiredDestName,
 252                 ) );
 253                 $form->setTitle( $this->getTitle() );
 254
 255                 # Check the token, but only if necessary
 256                 if(
 257                         !$this->mTokenOk && !$this->mCancelUpload &&
 258                         ( $this->mUpload && $this->mUploadClicked )
 259                 )
 260                 {
 261                         $form->addPreText( wfMsgExt( 'session_fail_preview', 'parseinline' ) );
 262                 }
 263
 264                 # Give a notice if the user is uploading a file that has been deleted or moved
 265                 # Note that this is independent from the message 'filewasdeleted' that requires JS
 266                 $desiredTitleObj = Title::newFromText( $this->mDesiredDestName, NS_FILE );
 267                 $delNotice = ''; // empty by default
 268                 if ( $desiredTitleObj instanceof Title && !$desiredTitleObj->exists() ) {
 269                         LogEventsList::showLogExtract( $delNotice, array( 'delete', 'move' ),
 270                                 $desiredTitleObj->getPrefixedText(),
 271                                 '', array( 'lim' => 10,
 272                                            'conds' => array( "log_action != 'revision'" ),
 273                                            'showIfEmpty' => false,
 274                                            'msgKey' => array( 'upload-recreate-warning' ) )
 275                         );
 276                 }
 277                 $form->addPreText( $delNotice );
 278
 279                 # Add text to form
 280                 $form->addPreText( '<div id="uploadtext">' .
 281                         wfMsgExt( 'uploadtext', 'parse', array( $this->mDesiredDestName ) ) .
 282                         '</div>' );
 283                 # Add upload error message
 284                 $form->addPreText( $message );
 285
 286                 # Add footer to form
 287                 $uploadFooter = wfMsgNoTrans( 'uploadfooter' );
 288                 if ( $uploadFooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadFooter ) ) {
 289                         $form->addPostText( '<div id="mw-upload-footer-message">'
 290                                 . $wgOut->parse( $uploadFooter ) . "</div>\n" );
 291                 }
 292
 293                 return $form;
 294
 295         }
 296
 297         /**
 298          * Shows the "view X deleted revivions link""
 299          */
 300         protected function showViewDeletedLinks() {
 301                 global $wgOut, $wgUser;
 302
 303                 $title = Title::makeTitleSafe( NS_FILE, $this->mDesiredDestName );
 304                 // Show a subtitle link to deleted revisions (to sysops et al only)
 305                 if( $title instanceof Title ) {
 306                         $count = $title->isDeleted();
 307                         if ( $count > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) {
 308                                 $link = wfMsgExt(
 309                                         $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted',
 310                                         array( 'parse', 'replaceafter' ),
 311                                         $wgUser->getSkin()->linkKnown(
 312                                                 SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 313                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count )
 314                                         )
 315                                 );
 316                                 $wgOut->addHTML( "<div id=\"contentSub2\">{$link}</div>" );
 317                         }
 318                 }
 319
 320                 // Show the relevant lines from deletion log (for still deleted files only)
 321                 if( $title instanceof Title && $title->isDeletedQuick() && !$title->exists() ) {
 322                         $this->showDeletionLog( $wgOut, $title->getPrefixedText() );
 323                 }
 324         }
 325
 326         /**
 327          * Stashes the upload and shows the main upload form.
 328          *
 329          * Note: only errors that can be handled by changing the name or
 330          * description should be redirected here. It should be assumed that the
 331          * file itself is sane and has passed UploadBase::verifyFile. This
 332          * essentially means that UploadBase::VERIFICATION_ERROR and
 333          * UploadBase::EMPTY_FILE should not be passed here.
 334          *
 335          * @param $message String: HTML message to be passed to mainUploadForm
 336          */
 337         protected function showRecoverableUploadError( $message ) {
 338                 $sessionKey = $this->mUpload->stashSession();
 339                 $message = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" .
 340                         '<div class="error">' . $message . "</div>\n";
 341
 342                 $form = $this->getUploadForm( $message, $sessionKey );
 343                 $form->setSubmitText( wfMsg( 'upload-tryagain' ) );
 344                 $this->showUploadForm( $form );
 345         }
 346         /**
 347          * Stashes the upload, shows the main form, but adds an "continue anyway button".
 348          * Also checks whether there are actually warnings to display.
 349          *
 350          * @param $warnings Array
 351          * @return boolean true if warnings were displayed, false if there are no
 352          *      warnings and the should continue processing like there was no warning
 353          */
 354         protected function showUploadWarning( $warnings ) {
 355                 # If there are no warnings, or warnings we can ignore, return early.
 356                 # mDestWarningAck is set when some javascript has shown the warning
 357                 # to the user. mForReUpload is set when the user clicks the "upload a
 358                 # new version" link.
 359                 if ( !$warnings || ( count( $warnings ) == 1 &&
 360                         isset( $warnings['exists'] ) &&
 361                         ( $this->mDestWarningAck || $this->mForReUpload ) ) )
 362                 {
 363                         return false;
 364                 }
 365
 366                 $sessionKey = $this->mUpload->stashSession();
 367
 368                 $warningHtml = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n"
 369                         . '<ul class="warning">';
 370                 foreach( $warnings as $warning => $args ) {
 371                         if( $warning == 'exists' ) {
 372                                 $msg = "\t<li>" . self::getExistsWarning( $args ) . "</li>\n";
 373                         } elseif( $warning == 'duplicate' ) {
 374                                 $msg = self::getDupeWarning( $args );
 375                         } elseif( $warning == 'duplicate-archive' ) {
 376                                 $msg = "\t<li>" . wfMsgExt( 'file-deleted-duplicate', 'parseinline',
 377                                                 array( Title::makeTitle( NS_FILE, $args )->getPrefixedText() ) )
 378                                         . "</li>\n";
 379                         } else {
 380                                 if ( $args === true ) {
 381                                         $args = array();
 382                                 } elseif ( !is_array( $args ) ) {
 383                                         $args = array( $args );
 384                                 }
 385                                 $msg = "\t<li>" . wfMsgExt( $warning, 'parseinline', $args ) . "</li>\n";
 386                         }
 387                         $warningHtml .= $msg;
 388                 }
 389                 $warningHtml .= "</ul>\n";
 390                 $warningHtml .= wfMsgExt( 'uploadwarning-text', 'parse' );
 391
 392                 $form = $this->getUploadForm( $warningHtml, $sessionKey, /* $hideIgnoreWarning */ true );
 393                 $form->setSubmitText( wfMsg( 'upload-tryagain' ) );
 394                 $form->addButton( 'wpUploadIgnoreWarning', wfMsg( 'ignorewarning' ) );
 395                 $form->addButton( 'wpCancelUpload', wfMsg( 'reuploaddesc' ) );
 396
 397                 $this->showUploadForm( $form );
 398
 399                 # Indicate that we showed a form
 400                 return true;
 401         }
 402
 403         /**
 404          * Show the upload form with error message, but do not stash the file.
 405          *
 406          * @param $message HTML string
 407          */
 408         protected function showUploadError( $message ) {
 409                 $message = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" .
 410                         '<div class="error">' . $message . "</div>\n";
 411                 $this->showUploadForm( $this->getUploadForm( $message ) );
 412         }
 413
 414         /**
 415          * Do the upload.
 416          * Checks are made in SpecialUpload::execute()
 417          */
 418         protected function processUpload() {
 419                 global $wgUser, $wgOut;
 420
 421                 // Fetch the file if required
 422                 $status = $this->mUpload->fetchFile();
 423                 if( !$status->isOK() ) {
 424                         $this->showUploadError( $wgOut->parse( $status->getWikiText() ) );
 425                         return;
 426                 }
 427
 428                 if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) ) {
 429                         wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file.\n" );
 430                         // This code path is deprecated. If you want to break upload processing
 431                         // do so by hooking into the appropriate hooks in UploadBase::verifyUpload
 432                         // and UploadBase::verifyFile.
 433                         // If you use this hook to break uploading, the user will be returned
 434                         // an empty form with no error message whatsoever.
 435                         return;
 436                 }
 437
 438
 439                 // Upload verification
 440                 $details = $this->mUpload->verifyUpload();
 441                 if ( $details['status'] != UploadBase::OK ) {
 442                         $this->processVerificationError( $details );
 443                         return;
 444                 }
 445
 446                 // Verify permissions for this title
 447                 $permErrors = $this->mUpload->verifyPermissions( $wgUser );
 448                 if( $permErrors !== true ) {
 449                         $code = array_shift( $permErrors[0] );
 450                         $this->showRecoverableUploadError( wfMsgExt( $code,
 451                                         'parseinline', $permErrors[0] ) );
 452                         return;
 453                 }
 454
 455                 $this->mLocalFile = $this->mUpload->getLocalFile();
 456
 457                 // Check warnings if necessary
 458                 if( !$this->mIgnoreWarning ) {
 459                         $warnings = $this->mUpload->checkWarnings();
 460                         if( $this->showUploadWarning( $warnings ) ) {
 461                                 return;
 462                         }
 463                 }
 464
 465                 // Get the page text if this is not a reupload
 466                 if( !$this->mForReUpload ) {
 467                         $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 468                                 $this->mCopyrightStatus, $this->mCopyrightSource );
 469                 } else {
 470                         $pageText = false;
 471                 }
 472                 $status = $this->mUpload->performUpload( $this->mComment, $pageText, $this->mWatchthis, $wgUser );
 473                 if ( !$status->isGood() ) {
 474                         $this->showUploadError( $wgOut->parse( $status->getWikiText() ) );
 475                         return;
 476                 }
 477
 478                 // Success, redirect to description page
 479                 $this->mUploadSuccessful = true;
 480                 wfRunHooks( 'SpecialUploadComplete', array( &$this ) );
 481                 $wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
 482         }
 483
 484         /**
 485          * Get the initial image page text based on a comment and optional file status information
 486          */
 487         public static function getInitialPageText( $comment = '', $license = '', $copyStatus = '', $source = '' ) {
 488                 global $wgUseCopyrightUpload;
 489                 if ( $wgUseCopyrightUpload ) {
 490                         $licensetxt = '';
 491                         if ( $license != '' ) {
 492                                 $licensetxt = '== ' . wfMsgForContent( 'license-header' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 493                         }
 494                         $pageText = '== ' . wfMsgForContent( 'filedesc' ) . " ==\n" . $comment . "\n" .
 495                                 '== ' . wfMsgForContent( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
 496                                 "$licensetxt" .
 497                                 '== ' . wfMsgForContent( 'filesource' ) . " ==\n" . $source;
 498                 } else {
 499                         if ( $license != '' ) {
 500                                 $filedesc = $comment == '' ? '' : '== ' . wfMsgForContent( 'filedesc' ) . " ==\n" . $comment . "\n";
 501                                         $pageText = $filedesc .
 502                                         '== ' . wfMsgForContent( 'license-header' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 503                         } else {
 504                                 $pageText = $comment;
 505                         }
 506                 }
 507                 return $pageText;
 508         }
 509
 510         /**
 511          * See if we should check the 'watch this page' checkbox on the form
 512          * based on the user's preferences and whether we're being asked
 513          * to create a new file or update an existing one.
 514          *
 515          * In the case where 'watch edits' is off but 'watch creations' is on,
 516          * we'll leave the box unchecked.
 517          *
 518          * Note that the page target can be changed *on the form*, so our check
 519          * state can get out of sync.
 520          */
 521         protected function getWatchCheck() {
 522                 global $wgUser;
 523                 if( $wgUser->getOption( 'watchdefault' ) ) {
 524                         // Watch all edits!
 525                         return true;
 526                 }
 527
 528                 $local = wfLocalFile( $this->mDesiredDestName );
 529                 if( $local && $local->exists() ) {
 530                         // We're uploading a new version of an existing file.
 531                         // No creation, so don't watch it if we're not already.
 532                         return $local->getTitle()->userIsWatching();
 533                 } else {
 534                         // New page should get watched if that's our option.
 535                         return $wgUser->getOption( 'watchcreations' );
 536                 }
 537         }
 538
 539
 540         /**
 541          * Provides output to the user for a result of UploadBase::verifyUpload
 542          *
 543          * @param $details Array: result of UploadBase::verifyUpload
 544          */
 545         protected function processVerificationError( $details ) {
 546                 global $wgFileExtensions, $wgLang;
 547
 548                 switch( $details['status'] ) {
 549
 550                         /** Statuses that only require name changing **/
 551                         case UploadBase::MIN_LENGTH_PARTNAME:
 552                                 $this->showRecoverableUploadError( wfMsgHtml( 'minlength1' ) );
 553                                 break;
 554                         case UploadBase::ILLEGAL_FILENAME:
 555                                 $this->showRecoverableUploadError( wfMsgExt( 'illegalfilename',
 556                                         'parseinline', $details['filtered'] ) );
 557                                 break;
 558                         case UploadBase::FILETYPE_MISSING:
 559                                 $this->showRecoverableUploadError( wfMsgExt( 'filetype-missing',
 560                                         'parseinline' ) );
 561                                 break;
 562
 563                         /** Statuses that require reuploading **/
 564                         case UploadBase::EMPTY_FILE:
 565                                 $this->showUploadError( wfMsgHtml( 'emptyfile' ) );
 566                                 break;
 567                         case UploadBase::FILE_TOO_LARGE:
 568                                 $this->showUploadError( wfMsgHtml( 'largefileserver' ) );
 569                                 break;
 570                         case UploadBase::FILETYPE_BADTYPE:
 571                                 $finalExt = $details['finalExt'];
 572                                 $this->showUploadError(
 573                                         wfMsgExt( 'filetype-banned-type',
 574                                                 array( 'parseinline' ),
 575                                                 htmlspecialchars( $finalExt ),
 576                                                 implode(
 577                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 578                                                         $wgFileExtensions
 579                                                 ),
 580                                                 $wgLang->formatNum( count( $wgFileExtensions ) )
 581                                         )
 582                                 );
 583                                 break;
 584                         case UploadBase::VERIFICATION_ERROR:
 585                                 unset( $details['status'] );
 586                                 $code = array_shift( $details['details'] );
 587                                 $this->showUploadError( wfMsgExt( $code, 'parseinline', $details['details'] ) );
 588                                 break;
 589                         case UploadBase::HOOK_ABORTED:
 590                                 if ( is_array( $details['error'] ) ) { # allow hooks to return error details in an array
 591                                         $args = $details['error'];
 592                                         $error = array_shift( $args );
 593                                 } else {
 594                                         $error = $details['error'];
 595                                         $args = null;
 596                                 }
 597
 598                                 $this->showUploadError( wfMsgExt( $error, 'parseinline', $args ) );
 599                                 break;
 600                         default:
 601                                 throw new MWException( __METHOD__ . ": Unknown value `{$details['status']}`" );
 602                 }
 603         }
 604
 605         /**
 606          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 607          *
 608          * @return Boolean: success
 609          */
 610         protected function unsaveUploadedFile() {
 611                 global $wgOut;
 612                 if ( !( $this->mUpload instanceof UploadFromStash ) ) {
 613                         return true;
 614                 }
 615                 $success = $this->mUpload->unsaveUploadedFile();
 616                 if ( !$success ) {
 617                         $wgOut->showFileDeleteError( $this->mUpload->getTempPath() );
 618                         return false;
 619                 } else {
 620                         return true;
 621                 }
 622         }
 623
 624         /*** Functions for formatting warnings ***/
 625
 626         /**
 627          * Formats a result of UploadBase::getExistsWarning as HTML
 628          * This check is static and can be done pre-upload via AJAX
 629          *
 630          * @param $exists Array: the result of UploadBase::getExistsWarning
 631          * @return String: empty string if there is no warning or an HTML fragment
 632          */
 633         public static function getExistsWarning( $exists ) {
 634                 global $wgUser;
 635
 636                 if ( !$exists ) {
 637                         return '';
 638                 }
 639
 640                 $file = $exists['file'];
 641                 $filename = $file->getTitle()->getPrefixedText();
 642                 $warning = '';
 643
 644                 $sk = $wgUser->getSkin();
 645
 646                 if( $exists['warning'] == 'exists' ) {
 647                         // Exact match
 648                         $warning = wfMsgExt( 'fileexists', 'parseinline', $filename );
 649                 } elseif( $exists['warning'] == 'page-exists' ) {
 650                         // Page exists but file does not
 651                         $warning = wfMsgExt( 'filepageexists', 'parseinline', $filename );
 652                 } elseif ( $exists['warning'] == 'exists-normalized' ) {
 653                         $warning = wfMsgExt( 'fileexists-extension', 'parseinline', $filename,
 654                                 $exists['normalizedFile']->getTitle()->getPrefixedText() );
 655                 } elseif ( $exists['warning'] == 'thumb' ) {
 656                         // Swapped argument order compared with other messages for backwards compatibility
 657                         $warning = wfMsgExt( 'fileexists-thumbnail-yes', 'parseinline',
 658                                 $exists['thumbFile']->getTitle()->getPrefixedText(), $filename );
 659                 } elseif ( $exists['warning'] == 'thumb-name' ) {
 660                         // Image w/o '180px-' does not exists, but we do not like these filenames
 661                         $name = $file->getName();
 662                         $badPart = substr( $name, 0, strpos( $name, '-' ) + 1 );
 663                         $warning = wfMsgExt( 'file-thumbnail-no', 'parseinline', $badPart );
 664                 } elseif ( $exists['warning'] == 'bad-prefix' ) {
 665                         $warning = wfMsgExt( 'filename-bad-prefix', 'parseinline', $exists['prefix'] );
 666                 } elseif ( $exists['warning'] == 'was-deleted' ) {
 667                         # If the file existed before and was deleted, warn the user of this
 668                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 669                         $llink = $sk->linkKnown(
 670                                 $ltitle,
 671                                 wfMsgHtml( 'deletionlog' ),
 672                                 array(),
 673                                 array(
 674                                         'type' => 'delete',
 675                                         'page' => $filename
 676                                 )
 677                         );
 678                         $warning = wfMsgWikiHtml( 'filewasdeleted', $llink );
 679                 }
 680
 681                 return $warning;
 682         }
 683
 684         /**
 685          * Get a list of warnings
 686          *
 687          * @param $filename String: local filename, e.g. 'file exists', 'non-descriptive filename'
 688          * @return Array: list of warning messages
 689          */
 690         public static function ajaxGetExistsWarning( $filename ) {
 691                 $file = wfFindFile( $filename );
 692                 if( !$file ) {
 693                         // Force local file so we have an object to do further checks against
 694                         // if there isn't an exact match...
 695                         $file = wfLocalFile( $filename );
 696                 }
 697                 $s = '&#160;';
 698                 if ( $file ) {
 699                         $exists = UploadBase::getExistsWarning( $file );
 700                         $warning = self::getExistsWarning( $exists );
 701                         if ( $warning !== '' ) {
 702                                 $s = "<div>$warning</div>";
 703                         }
 704                 }
 705                 return $s;
 706         }
 707
 708         /**
 709          * Construct a warning and a gallery from an array of duplicate files.
 710          */
 711         public static function getDupeWarning( $dupes ) {
 712                 if( $dupes ) {
 713                         global $wgOut;
 714                         $msg = '<gallery>';
 715                         foreach( $dupes as $file ) {
 716                                 $title = $file->getTitle();
 717                                 $msg .= $title->getPrefixedText() .
 718                                         '|' . $title->getText() . "\n";
 719                         }
 720                         $msg .= '</gallery>';
 721                         return '<li>' .
 722                                 wfMsgExt( 'file-exists-duplicate', array( 'parse' ), count( $dupes ) ) .
 723                                 $wgOut->parse( $msg ) .
 724                                 "</li>\n";
 725                 } else {
 726                         return '';
 727                 }
 728         }
 729
 730 }
 731
 732 /**
 733  * Sub class of HTMLForm that provides the form section of SpecialUpload
 734  */
 735 class UploadForm extends HTMLForm {
 736         protected $mWatch;
 737         protected $mForReUpload;
 738         protected $mSessionKey;
 739         protected $mHideIgnoreWarning;
 740         protected $mDestWarningAck;
 741         protected $mDestFile;
 742
 743         protected $mTextTop;
 744         protected $mTextAfterSummary;
 745
 746         protected $mSourceIds;
 747
 748         public function __construct( $options = array() ) {
 749                 $this->mWatch = !empty( $options['watch'] );
 750                 $this->mForReUpload = !empty( $options['forreupload'] );
 751                 $this->mSessionKey = isset( $options['sessionkey'] )
 752                                 ? $options['sessionkey'] : '';
 753                 $this->mHideIgnoreWarning = !empty( $options['hideignorewarning'] );
 754                 $this->mDestWarningAck = !empty( $options['destwarningack'] );
 755                 $this->mDestFile = isset( $options['destfile'] ) ? $options['destfile'] : '';
 756
 757                 $this->mTextTop = isset( $options['texttop'] )
 758                         ? $options['texttop'] : '';
 759
 760                 $this->mTextAfterSummary = isset( $options['textaftersummary'] )
 761                         ? $options['textaftersummary'] : '';
 762
 763                 $sourceDescriptor = $this->getSourceSection();
 764                 $descriptor = $sourceDescriptor
 765                         + $this->getDescriptionSection()
 766                         + $this->getOptionsSection();
 767
 768                 wfRunHooks( 'UploadFormInitDescriptor', array( &$descriptor ) );
 769                 parent::__construct( $descriptor, 'upload' );
 770
 771                 # Set some form properties
 772                 $this->setSubmitText( wfMsg( 'uploadbtn' ) );
 773                 $this->setSubmitName( 'wpUpload' );
 774                 # Used message keys: 'accesskey-upload', 'tooltip-upload'
 775                 $this->setSubmitTooltip( 'upload' );
 776                 $this->setId( 'mw-upload-form' );
 777
 778                 # Build a list of IDs for javascript insertion
 779                 $this->mSourceIds = array();
 780                 foreach ( $sourceDescriptor as $field ) {
 781                         if ( !empty( $field['id'] ) ) {
 782                                 $this->mSourceIds[] = $field['id'];
 783                         }
 784                 }
 785
 786         }
 787
 788         /**
 789          * Get the descriptor of the fieldset that contains the file source
 790          * selection. The section is 'source'
 791          *
 792          * @return Array: descriptor array
 793          */
 794         protected function getSourceSection() {
 795                 global $wgLang, $wgUser, $wgRequest;
 796                 global $wgMaxUploadSize;
 797
 798                 if ( $this->mSessionKey ) {
 799                         return array(
 800                                 'wpSessionKey' => array(
 801                                         'type' => 'hidden',
 802                                         'default' => $this->mSessionKey,
 803                                 ),
 804                                 'wpSourceType' => array(
 805                                         'type' => 'hidden',
 806                                         'default' => 'Stash',
 807                                 ),
 808                         );
 809                 }
 810
 811                 $canUploadByUrl = UploadFromUrl::isEnabled() && $wgUser->isAllowed( 'upload_by_url' );
 812                 $radio = $canUploadByUrl;
 813                 $selectedSourceType = strtolower( $wgRequest->getText( 'wpSourceType', 'File' ) );
 814
 815                 $descriptor = array();
 816                 if ( $this->mTextTop ) {
 817                         $descriptor['UploadFormTextTop'] = array(
 818                                 'type' => 'info',
 819                                 'section' => 'source',
 820                                 'default' => $this->mTextTop,
 821                                 'raw' => true,
 822                         );
 823                 }
 824
 825                 $descriptor['UploadFile'] = array(
 826                         'class' => 'UploadSourceField',
 827                         'section' => 'source',
 828                         'type' => 'file',
 829                         'id' => 'wpUploadFile',
 830                         'label-message' => 'sourcefilename',
 831                         'upload-type' => 'File',
 832                         'radio' => &$radio,
 833                         'help' => wfMsgExt( 'upload-maxfilesize',
 834                                         array( 'parseinline', 'escapenoentities' ),
 835                                         $wgLang->formatSize(
 836                                                 wfShorthandToInteger( min(
 837                                                         wfShorthandToInteger(
 838                                                                 ini_get( 'upload_max_filesize' )
 839                                                         ), $wgMaxUploadSize
 840                                                 ) )
 841                                         )
 842                                 ) . ' ' . wfMsgHtml( 'upload_source_file' ),
 843                         'checked' => $selectedSourceType == 'file',
 844                 );
 845                 if ( $canUploadByUrl ) {
 846                         $descriptor['UploadFileURL'] = array(
 847                                 'class' => 'UploadSourceField',
 848                                 'section' => 'source',
 849                                 'id' => 'wpUploadFileURL',
 850                                 'label-message' => 'sourceurl',
 851                                 'upload-type' => 'url',
 852                                 'radio' => &$radio,
 853                                 'help' => wfMsgExt( 'upload-maxfilesize',
 854                                                 array( 'parseinline', 'escapenoentities' ),
 855                                                 $wgLang->formatSize( $wgMaxUploadSize )
 856                                         ) . ' ' . wfMsgHtml( 'upload_source_url' ),
 857                                 'checked' => $selectedSourceType == 'url',
 858                         );
 859                 }
 860                 wfRunHooks( 'UploadFormSourceDescriptors', array( &$descriptor, &$radio, $selectedSourceType ) );
 861
 862                 $descriptor['Extensions'] = array(
 863                         'type' => 'info',
 864                         'section' => 'source',
 865                         'default' => $this->getExtensionsMessage(),
 866                         'raw' => true,
 867                 );
 868                 return $descriptor;
 869         }
 870
 871         /**
 872          * Get the messages indicating which extensions are preferred and prohibitted.
 873          *
 874          * @return String: HTML string containing the message
 875          */
 876         protected function getExtensionsMessage() {
 877                 # Print a list of allowed file extensions, if so configured.  We ignore
 878                 # MIME type here, it's incomprehensible to most people and too long.
 879                 global $wgLang, $wgCheckFileExtensions, $wgStrictFileExtensions,
 880                 $wgFileExtensions, $wgFileBlacklist;
 881
 882                 if( $wgCheckFileExtensions ) {
 883                         if( $wgStrictFileExtensions ) {
 884                                 # Everything not permitted is banned
 885                                 $extensionsList =
 886                                         '<div id="mw-upload-permitted">' .
 887                                         wfMsgWikiHtml( 'upload-permitted', $wgLang->commaList( $wgFileExtensions ) ) .
 888                                         "</div>\n";
 889                         } else {
 890                                 # We have to list both preferred and prohibited
 891                                 $extensionsList =
 892                                         '<div id="mw-upload-preferred">' .
 893                                         wfMsgWikiHtml( 'upload-preferred', $wgLang->commaList( $wgFileExtensions ) ) .
 894                                         "</div>\n" .
 895                                         '<div id="mw-upload-prohibited">' .
 896                                         wfMsgWikiHtml( 'upload-prohibited', $wgLang->commaList( $wgFileBlacklist ) ) .
 897                                         "</div>\n";
 898                         }
 899                 } else {
 900                         # Everything is permitted.
 901                         $extensionsList = '';
 902                 }
 903                 return $extensionsList;
 904         }
 905
 906         /**
 907          * Get the descriptor of the fieldset that contains the file description
 908          * input. The section is 'description'
 909          *
 910          * @return Array: descriptor array
 911          */
 912         protected function getDescriptionSection() {
 913                 global $wgUser;
 914
 915                 $descriptor = array(
 916                         'DestFile' => array(
 917                                 'type' => 'text',
 918                                 'section' => 'description',
 919                                 'id' => 'wpDestFile',
 920                                 'label-message' => 'destfilename',
 921                                 'size' => 60,
 922                                 'default' => $this->mDestFile,
 923                                 # FIXME: hack to work around poor handling of the 'default' option in HTMLForm
 924                                 'nodata' => strval( $this->mDestFile ) !== '',
 925                         ),
 926                         'UploadDescription' => array(
 927                                 'type' => 'textarea',
 928                                 'section' => 'description',
 929                                 'id' => 'wpUploadDescription',
 930                                 'label-message' => $this->mForReUpload
 931                                         ? 'filereuploadsummary'
 932                                         : 'fileuploadsummary',
 933                                 'cols' => intval( $wgUser->getOption( 'cols' ) ),
 934                                 'rows' => 8,
 935                         )
 936                 );
 937                 if ( $this->mTextAfterSummary ) {
 938                         $descriptor['UploadFormTextAfterSummary'] = array(
 939                                 'type' => 'info',
 940                                 'section' => 'description',
 941                                 'default' => $this->mTextAfterSummary,
 942                                 'raw' => true,
 943                         );
 944                 }
 945
 946                 $descriptor += array(
 947                         'EditTools' => array(
 948                                 'type' => 'edittools',
 949                                 'section' => 'description',
 950                         )
 951                 );
 952
 953                 if ( $this->mForReUpload ) {
 954                         $descriptor['DestFile']['readonly'] = true;
 955                 } else {
 956                         $descriptor['License'] = array(
 957                                 'type' => 'select',
 958                                 'class' => 'Licenses',
 959                                 'section' => 'description',
 960                                 'id' => 'wpLicense',
 961                                 'label-message' => 'license',
 962                         );
 963                 }
 964
 965                 global $wgUseCopyrightUpload;
 966                 if ( $wgUseCopyrightUpload ) {
 967                         $descriptor['UploadCopyStatus'] = array(
 968                                 'type' => 'text',
 969                                 'section' => 'description',
 970                                 'id' => 'wpUploadCopyStatus',
 971                                 'label-message' => 'filestatus',
 972                         );
 973                         $descriptor['UploadSource'] = array(
 974                                 'type' => 'text',
 975                                 'section' => 'description',
 976                                 'id' => 'wpUploadSource',
 977                                 'label-message' => 'filesource',
 978                         );
 979                 }
 980
 981                 return $descriptor;
 982         }
 983
 984         /**
 985          * Get the descriptor of the fieldset that contains the upload options,
 986          * such as "watch this file". The section is 'options'
 987          *
 988          * @return Array: descriptor array
 989          */
 990         protected function getOptionsSection() {
 991                 global $wgUser;
 992
 993                 if ( $wgUser->isLoggedIn() ) {
 994                         $descriptor = array(
 995                                 'Watchthis' => array(
 996                                         'type' => 'check',
 997                                         'id' => 'wpWatchthis',
 998                                         'label-message' => 'watchthisupload',
 999                                         'section' => 'options',
1000                                         'default' => $wgUser->getOption( 'watchcreations' ),
1001                                 )
1002                         );
1003                 }
1004                 if ( !$this->mHideIgnoreWarning ) {
1005                         $descriptor['IgnoreWarning'] = array(
1006                                 'type' => 'check',
1007                                 'id' => 'wpIgnoreWarning',
1008                                 'label-message' => 'ignorewarnings',
1009                                 'section' => 'options',
1010                         );
1011                 }
1012
1013                 $descriptor['wpDestFileWarningAck'] = array(
1014                         'type' => 'hidden',
1015                         'id' => 'wpDestFileWarningAck',
1016                         'default' => $this->mDestWarningAck ? '1' : '',
1017                 );
1018
1019                 if ( $this->mForReUpload ) {
1020                         $descriptor['wpForReUpload'] = array(
1021                                 'type' => 'hidden',
1022                                 'id' => 'wpForReUpload',
1023                                 'default' => '1',
1024                         );
1025                 }
1026
1027                 return $descriptor;
1028         }
1029
1030         /**
1031          * Add the upload JS and show the form.
1032          */
1033         public function show() {
1034                 $this->addUploadJS();
1035                 parent::show();
1036         }
1037
1038         /**
1039          * Add upload JS to $wgOut
1040          */
1041         protected function addUploadJS() {
1042                 global $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview, $wgEnableAPI, $wgStrictFileExtensions;
1043                 global $wgOut;
1044
1045                 $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
1046                 $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview && $wgEnableAPI;
1047
1048                 $scriptVars = array(
1049                         'wgAjaxUploadDestCheck' => $useAjaxDestCheck,
1050                         'wgAjaxLicensePreview' => $useAjaxLicensePreview,
1051                         'wgUploadAutoFill' => !$this->mForReUpload &&
1052                                 // If we received mDestFile from the request, don't autofill
1053                                 // the wpDestFile textbox
1054                                 $this->mDestFile === '',
1055                         'wgUploadSourceIds' => $this->mSourceIds,
1056                         'wgStrictFileExtensions' => $wgStrictFileExtensions,
1057                         'wgCapitalizeUploads' => MWNamespace::isCapitalized( NS_FILE ),
1058                 );
1059
1060                 $wgOut->addScript( Skin::makeVariablesScript( $scriptVars ) );
1061
1062                 // For <charinsert> support
1063                 $wgOut->addModules( array( 'mediawiki.legacy.edit', 'mediawiki.legacy.upload' ) );
1064         }
1065
1066         /**
1067          * Empty function; submission is handled elsewhere.
1068          *
1069          * @return bool false
1070          */
1071         function trySubmit() {
1072                 return false;
1073         }
1074
1075 }
1076
1077 /**
1078  * A form field that contains a radio box in the label
1079  */
1080 class UploadSourceField extends HTMLTextField {
1081         function getLabelHtml( $cellAttributes = array() ) {
1082                 $id = "wpSourceType{$this->mParams['upload-type']}";
1083                 $label = Html::rawElement( 'label', array( 'for' => $id ), $this->mLabel );
1084
1085                 if ( !empty( $this->mParams['radio'] ) ) {
1086                         $attribs = array(
1087                                 'name' => 'wpSourceType',
1088                                 'type' => 'radio',
1089                                 'id' => $id,
1090                                 'value' => $this->mParams['upload-type'],
1091                         );
1092                         if ( !empty( $this->mParams['checked'] ) ) {
1093                                 $attribs['checked'] = 'checked';
1094                         }
1095                         $label .= Html::element( 'input', $attribs );
1096                 }
1097
1098                 return Html::rawElement( 'td', array( 'class' => 'mw-label' ) + $cellAttributes, $label );
1099         }
1100
1101         function getSize() {
1102                 return isset( $this->mParams['size'] )
1103                         ? $this->mParams['size']
1104                         : 60;
1105         }
1106 }
1107