includes/specials/SpecialUpload.php

   1 <?php
   2 /**
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  */
  19
  20 /**
  21  * @file
  22  * @ingroup SpecialPage
  23  * @ingroup Upload
  24  *
  25  * Form for handling uploads and special page.
  26  */
  27
  28 class SpecialUpload extends SpecialPage {
  29         /**
  30          * Constructor : initialise object
  31          * Get data POSTed through the form and assign them to the object
  32          * @param $request WebRequest : data posted.
  33          */
  34         public function __construct( $request = null ) {
  35                 global $wgRequest;
  36
  37                 parent::__construct( 'Upload', 'upload' );
  38
  39                 $this->loadRequest( is_null( $request ) ? $wgRequest : $request );
  40         }
  41
  42         /** Misc variables **/
  43         protected $mRequest;                    // The WebRequest or FauxRequest this form is supposed to handle
  44         protected $mSourceType;
  45         protected $mUpload;
  46         protected $mLocalFile;
  47         protected $mUploadClicked;
  48
  49         /** User input variables from the "description" section **/
  50         public    $mDesiredDestName;    // The requested target file name
  51         protected $mComment;
  52         protected $mLicense;
  53
  54         /** User input variables from the root section **/
  55         protected $mIgnoreWarning;
  56         protected $mWatchThis;
  57         protected $mCopyrightStatus;
  58         protected $mCopyrightSource;
  59
  60         /** Hidden variables **/
  61         protected $mDestWarningAck;
  62         protected $mForReUpload;                // The user followed an "overwrite this file" link
  63         protected $mCancelUpload;               // The user clicked "Cancel and return to upload form" button
  64         protected $mTokenOk;
  65         protected $mUploadSuccessful = false;   // Subclasses can use this to determine whether a file was uploaded
  66
  67         /** Text injection points for hooks not using HTMLForm **/
  68         public $uploadFormTextTop;
  69         public $uploadFormTextAfterSummary;
  70
  71         /**
  72          * Initialize instance variables from request and create an Upload handler
  73          *
  74          * @param $request WebRequest: the request to extract variables from
  75          */
  76         protected function loadRequest( $request ) {
  77                 global $wgUser;
  78
  79                 $this->mRequest = $request;
  80                 $this->mSourceType        = $request->getVal( 'wpSourceType', 'file' );
  81                 $this->mUpload            = UploadBase::createFromRequest( $request );
  82                 $this->mUploadClicked     = $request->wasPosted()
  83                         && ( $request->getCheck( 'wpUpload' )
  84                                 || $request->getCheck( 'wpUploadIgnoreWarning' ) );
  85
  86                 // Guess the desired name from the filename if not provided
  87                 $this->mDesiredDestName   = $request->getText( 'wpDestFile' );
  88                 if( !$this->mDesiredDestName && $request->getFileName( 'wpUploadFile' ) !== null ) {
  89                         $this->mDesiredDestName = $request->getFileName( 'wpUploadFile' );
  90                 }
  91                 $this->mComment           = $request->getText( 'wpUploadDescription' );
  92                 $this->mLicense           = $request->getText( 'wpLicense' );
  93
  94
  95                 $this->mDestWarningAck    = $request->getText( 'wpDestFileWarningAck' );
  96                 $this->mIgnoreWarning     = $request->getCheck( 'wpIgnoreWarning' )
  97                         || $request->getCheck( 'wpUploadIgnoreWarning' );
  98                 $this->mWatchthis         = $request->getBool( 'wpWatchthis' ) && $wgUser->isLoggedIn();
  99                 $this->mCopyrightStatus   = $request->getText( 'wpUploadCopyStatus' );
 100                 $this->mCopyrightSource   = $request->getText( 'wpUploadSource' );
 101
 102
 103                 $this->mForReUpload       = $request->getBool( 'wpForReUpload' ); // updating a file
 104                 $this->mCancelUpload      = $request->getCheck( 'wpCancelUpload' )
 105                                          || $request->getCheck( 'wpReUpload' ); // b/w compat
 106
 107                 // If it was posted check for the token (no remote POST'ing with user credentials)
 108                 $token = $request->getVal( 'wpEditToken' );
 109                 if( $this->mSourceType == 'file' && $token == null ) {
 110                         // Skip token check for file uploads as that can't be faked via JS...
 111                         // Some client-side tools don't expect to need to send wpEditToken
 112                         // with their submissions, as that's new in 1.16.
 113                         $this->mTokenOk = true;
 114                 } else {
 115                         $this->mTokenOk = $wgUser->matchEditToken( $token );
 116                 }
 117
 118                 $this->uploadFormTextTop = '';
 119                 $this->uploadFormTextAfterSummary = '';
 120         }
 121
 122         /**
 123          * This page can be shown if uploading is enabled.
 124          * Handle permission checking elsewhere in order to be able to show
 125          * custom error messages.
 126          *
 127          * @param $user User object
 128          * @return Boolean
 129          */
 130         public function userCanExecute( $user ) {
 131                 return UploadBase::isEnabled() && parent::userCanExecute( $user );
 132         }
 133
 134         /**
 135          * Special page entry point
 136          */
 137         public function execute( $par ) {
 138                 global $wgUser, $wgOut;
 139
 140                 $this->setHeaders();
 141                 $this->outputHeader();
 142
 143                 # Check uploading enabled
 144                 if( !UploadBase::isEnabled() ) {
 145                         $wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext' );
 146                         return;
 147                 }
 148
 149                 # Check permissions
 150                 global $wgGroupPermissions;
 151                 $permissionRequired = UploadBase::isAllowed( $wgUser );
 152                 if( $permissionRequired !== true ) {
 153                         if( !$wgUser->isLoggedIn() && ( $wgGroupPermissions['user']['upload']
 154                                 || $wgGroupPermissions['autoconfirmed']['upload'] ) ) {
 155                                 // Custom message if logged-in users without any special rights can upload
 156                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 157                         } else {
 158                                 $wgOut->permissionRequired( $permissionRequired );
 159                         }
 160                         return;
 161                 }
 162
 163                 # Check blocks
 164                 if( $wgUser->isBlocked() ) {
 165                         $wgOut->blockedPage();
 166                         return;
 167                 }
 168
 169                 # Check whether we actually want to allow changing stuff
 170                 if( wfReadOnly() ) {
 171                         $wgOut->readOnlyPage();
 172                         return;
 173                 }
 174
 175                 # Unsave the temporary file in case this was a cancelled upload
 176                 if ( $this->mCancelUpload ) {
 177                         if ( !$this->unsaveUploadedFile() ) {
 178                                 # Something went wrong, so unsaveUploadedFile showed a warning
 179                                 return;
 180                         }
 181                 }
 182
 183                 # Process upload or show a form
 184                 if (
 185                         $this->mTokenOk && !$this->mCancelUpload &&
 186                         ( $this->mUpload && $this->mUploadClicked )
 187                 )
 188                 {
 189                         $this->processUpload();
 190                 } else {
 191                         # Backwards compatibility hook
 192                         if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) ) {
 193                                 wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
 194                                 return;
 195                         }
 196
 197                         $this->showUploadForm( $this->getUploadForm() );
 198                 }
 199
 200                 # Cleanup
 201                 if ( $this->mUpload ) {
 202                         $this->mUpload->cleanupTempFile();
 203                 }
 204         }
 205
 206         /**
 207          * Show the main upload form
 208          *
 209          * @param $form Mixed: an HTMLForm instance or HTML string to show
 210          */
 211         protected function showUploadForm( $form ) {
 212                 # Add links if file was previously deleted
 213                 if ( !$this->mDesiredDestName ) {
 214                         $this->showViewDeletedLinks();
 215                 }
 216
 217                 if ( $form instanceof HTMLForm ) {
 218                         $form->show();
 219                 } else {
 220                         global $wgOut;
 221                         $wgOut->addHTML( $form );
 222                 }
 223
 224         }
 225
 226         /**
 227          * Get an UploadForm instance with title and text properly set.
 228          *
 229          * @param $message String: HTML string to add to the form
 230          * @param $sessionKey String: session key in case this is a stashed upload
 231          * @param $hideIgnoreWarning Boolean: whether to hide "ignore warning" check box
 232          * @return UploadForm
 233          */
 234         protected function getUploadForm( $message = '', $sessionKey = '', $hideIgnoreWarning = false ) {
 235                 global $wgOut;
 236
 237                 # Initialize form
 238                 $form = new UploadForm( array(
 239                         'watch' => $this->getWatchCheck(),
 240                         'forreupload' => $this->mForReUpload,
 241                         'sessionkey' => $sessionKey,
 242                         'hideignorewarning' => $hideIgnoreWarning,
 243                         'destwarningack' => (bool)$this->mDestWarningAck,
 244
 245                         'texttop' => $this->uploadFormTextTop,
 246                         'textaftersummary' => $this->uploadFormTextAfterSummary,
 247                         'destfile' => $this->mDesiredDestName,
 248                 ) );
 249                 $form->setTitle( $this->getTitle() );
 250
 251                 # Check the token, but only if necessary
 252                 if(
 253                         !$this->mTokenOk && !$this->mCancelUpload &&
 254                         ( $this->mUpload && $this->mUploadClicked )
 255                 )
 256                 {
 257                         $form->addPreText( wfMsgExt( 'session_fail_preview', 'parseinline' ) );
 258                 }
 259
 260                 # Give a notice if the user is uploading a file that has been deleted or moved
 261                 # Note that this is independent from the message 'filewasdeleted' that requires JS
 262                 $desiredTitleObj = Title::newFromText( $this->mDesiredDestName, NS_FILE );
 263                 $delNotice = ''; // empty by default
 264                 if ( $desiredTitleObj instanceof Title && !$desiredTitleObj->exists() ) {
 265                         LogEventsList::showLogExtract( $delNotice, array( 'delete', 'move' ),
 266                                 $desiredTitleObj->getPrefixedText(),
 267                                 '', array( 'lim' => 10,
 268                                            'conds' => array( "log_action != 'revision'" ),
 269                                            'showIfEmpty' => false,
 270                                            'msgKey' => array( 'upload-recreate-warning' ) )
 271                         );
 272                 }
 273                 $form->addPreText( $delNotice );
 274
 275                 # Add text to form
 276                 $form->addPreText( '<div id="uploadtext">' .
 277                         wfMsgExt( 'uploadtext', 'parse', array( $this->mDesiredDestName ) ) .
 278                         '</div>' );
 279                 # Add upload error message
 280                 $form->addPreText( $message );
 281
 282                 # Add footer to form
 283                 $uploadFooter = wfMsgNoTrans( 'uploadfooter' );
 284                 if ( $uploadFooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadFooter ) ) {
 285                         $form->addPostText( '<div id="mw-upload-footer-message">'
 286                                 . $wgOut->parse( $uploadFooter ) . "</div>\n" );
 287                 }
 288
 289                 return $form;
 290
 291         }
 292
 293         /**
 294          * Shows the "view X deleted revivions link""
 295          */
 296         protected function showViewDeletedLinks() {
 297                 global $wgOut, $wgUser;
 298
 299                 $title = Title::makeTitleSafe( NS_FILE, $this->mDesiredDestName );
 300                 // Show a subtitle link to deleted revisions (to sysops et al only)
 301                 if( $title instanceof Title ) {
 302                         $count = $title->isDeleted();
 303                         if ( $count > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) {
 304                                 $link = wfMsgExt(
 305                                         $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted',
 306                                         array( 'parse', 'replaceafter' ),
 307                                         $wgUser->getSkin()->linkKnown(
 308                                                 SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ),
 309                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count )
 310                                         )
 311                                 );
 312                                 $wgOut->addHTML( "<div id=\"contentSub2\">{$link}</div>" );
 313                         }
 314                 }
 315
 316                 // Show the relevant lines from deletion log (for still deleted files only)
 317                 if( $title instanceof Title && $title->isDeletedQuick() && !$title->exists() ) {
 318                         $this->showDeletionLog( $wgOut, $title->getPrefixedText() );
 319                 }
 320         }
 321
 322         /**
 323          * Stashes the upload and shows the main upload form.
 324          *
 325          * Note: only errors that can be handled by changing the name or
 326          * description should be redirected here. It should be assumed that the
 327          * file itself is sane and has passed UploadBase::verifyFile. This
 328          * essentially means that UploadBase::VERIFICATION_ERROR and
 329          * UploadBase::EMPTY_FILE should not be passed here.
 330          *
 331          * @param $message String: HTML message to be passed to mainUploadForm
 332          */
 333         protected function showRecoverableUploadError( $message ) {
 334                 $sessionKey = $this->mUpload->stashSession();
 335                 $message = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" .
 336                         '<div class="error">' . $message . "</div>\n";
 337
 338                 $form = $this->getUploadForm( $message, $sessionKey );
 339                 $form->setSubmitText( wfMsg( 'upload-tryagain' ) );
 340                 $this->showUploadForm( $form );
 341         }
 342         /**
 343          * Stashes the upload, shows the main form, but adds an "continue anyway button".
 344          * Also checks whether there are actually warnings to display.
 345          *
 346          * @param $warnings Array
 347          * @return boolean true if warnings were displayed, false if there are no
 348          *      warnings and the should continue processing like there was no warning
 349          */
 350         protected function showUploadWarning( $warnings ) {
 351                 # If there are no warnings, or warnings we can ignore, return early.
 352                 # mDestWarningAck is set when some javascript has shown the warning
 353                 # to the user. mForReUpload is set when the user clicks the "upload a
 354                 # new version" link.
 355                 if ( !$warnings || ( count( $warnings ) == 1 &&
 356                         isset( $warnings['exists'] ) &&
 357                         ( $this->mDestWarningAck || $this->mForReUpload ) ) )
 358                 {
 359                         return false;
 360                 }
 361
 362                 $sessionKey = $this->mUpload->stashSession();
 363
 364                 $warningHtml = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n"
 365                         . '<ul class="warning">';
 366                 foreach( $warnings as $warning => $args ) {
 367                         $msg = '';
 368                         if( $warning == 'exists' ) {
 369                                 $msg = "\t<li>" . self::getExistsWarning( $args ) . "</li>\n";
 370                         } elseif( $warning == 'duplicate' ) {
 371                                 $msg = self::getDupeWarning( $args );
 372                         } elseif( $warning == 'duplicate-archive' ) {
 373                                 $msg = "\t<li>" . wfMsgExt( 'file-deleted-duplicate', 'parseinline',
 374                                                 array( Title::makeTitle( NS_FILE, $args )->getPrefixedText() ) )
 375                                         . "</li>\n";
 376                         } else {
 377                                 if ( $args === true ) {
 378                                         $args = array();
 379                                 } elseif ( !is_array( $args ) ) {
 380                                         $args = array( $args );
 381                                 }
 382                                 $msg = "\t<li>" . wfMsgExt( $warning, 'parseinline', $args ) . "</li>\n";
 383                         }
 384                         $warningHtml .= $msg;
 385                 }
 386                 $warningHtml .= "</ul>\n";
 387                 $warningHtml .= wfMsgExt( 'uploadwarning-text', 'parse' );
 388
 389                 $form = $this->getUploadForm( $warningHtml, $sessionKey, /* $hideIgnoreWarning */ true );
 390                 $form->setSubmitText( wfMsg( 'upload-tryagain' ) );
 391                 $form->addButton( 'wpUploadIgnoreWarning', wfMsg( 'ignorewarning' ) );
 392                 $form->addButton( 'wpCancelUpload', wfMsg( 'reuploaddesc' ) );
 393
 394                 $this->showUploadForm( $form );
 395
 396                 # Indicate that we showed a form
 397                 return true;
 398         }
 399
 400         /**
 401          * Show the upload form with error message, but do not stash the file.
 402          *
 403          * @param $message HTML string
 404          */
 405         protected function showUploadError( $message ) {
 406                 $message = '<h2>' . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" .
 407                         '<div class="error">' . $message . "</div>\n";
 408                 $this->showUploadForm( $this->getUploadForm( $message ) );
 409         }
 410
 411         /**
 412          * Do the upload.
 413          * Checks are made in SpecialUpload::execute()
 414          */
 415         protected function processUpload() {
 416                 global $wgUser, $wgOut;
 417
 418                 // Verify permissions
 419                 $permErrors = $this->mUpload->verifyPermissions( $wgUser );
 420                 if( $permErrors !== true ) {
 421                         $wgOut->showPermissionsErrorPage( $permErrors );
 422                         return;
 423                 }
 424
 425                 // Fetch the file if required
 426                 $status = $this->mUpload->fetchFile();
 427                 if( !$status->isOK() ) {
 428                         $this->showUploadError( $wgOut->parse( $status->getWikiText() ) );
 429                         return;
 430                 }
 431
 432                 // Deprecated backwards compatibility hook
 433                 if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) ) {
 434                         wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file.\n" );
 435                         return array( 'status' => UploadBase::BEFORE_PROCESSING );
 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                 $this->mLocalFile = $this->mUpload->getLocalFile();
 447
 448                 // Check warnings if necessary
 449                 if( !$this->mIgnoreWarning ) {
 450                         $warnings = $this->mUpload->checkWarnings();
 451                         if( $this->showUploadWarning( $warnings ) ) {
 452                                 return;
 453                         }
 454                 }
 455
 456                 // Get the page text if this is not a reupload
 457                 if( !$this->mForReUpload ) {
 458                         $pageText = self::getInitialPageText( $this->mComment, $this->mLicense,
 459                                 $this->mCopyrightStatus, $this->mCopyrightSource );
 460                 } else {
 461                         $pageText = false;
 462                 }
 463                 $status = $this->mUpload->performUpload( $this->mComment, $pageText, $this->mWatchthis, $wgUser );
 464                 if ( !$status->isGood() ) {
 465                         $this->showUploadError( $wgOut->parse( $status->getWikiText() ) );
 466                         return;
 467                 }
 468
 469                 // Success, redirect to description page
 470                 $this->mUploadSuccessful = true;
 471                 wfRunHooks( 'SpecialUploadComplete', array( &$this ) );
 472                 $wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
 473         }
 474
 475         /**
 476          * Get the initial image page text based on a comment and optional file status information
 477          */
 478         public static function getInitialPageText( $comment = '', $license = '', $copyStatus = '', $source = '' ) {
 479                 global $wgUseCopyrightUpload;
 480                 if ( $wgUseCopyrightUpload ) {
 481                         $licensetxt = '';
 482                         if ( $license != '' ) {
 483                                 $licensetxt = '== ' . wfMsgForContent( 'license-header' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 484                         }
 485                         $pageText = '== ' . wfMsgForContent( 'filedesc' ) . " ==\n" . $comment . "\n" .
 486                                 '== ' . wfMsgForContent( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
 487                                 "$licensetxt" .
 488                                 '== ' . wfMsgForContent( 'filesource' ) . " ==\n" . $source;
 489                 } else {
 490                         if ( $license != '' ) {
 491                                 $filedesc = $comment == '' ? '' : '== ' . wfMsgForContent( 'filedesc' ) . " ==\n" . $comment . "\n";
 492                                         $pageText = $filedesc .
 493                                         '== ' . wfMsgForContent( 'license-header' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 494                         } else {
 495                                 $pageText = $comment;
 496                         }
 497                 }
 498                 return $pageText;
 499         }
 500
 501         /**
 502          * See if we should check the 'watch this page' checkbox on the form
 503          * based on the user's preferences and whether we're being asked
 504          * to create a new file or update an existing one.
 505          *
 506          * In the case where 'watch edits' is off but 'watch creations' is on,
 507          * we'll leave the box unchecked.
 508          *
 509          * Note that the page target can be changed *on the form*, so our check
 510          * state can get out of sync.
 511          */
 512         protected function getWatchCheck() {
 513                 global $wgUser;
 514                 if( $wgUser->getOption( 'watchdefault' ) ) {
 515                         // Watch all edits!
 516                         return true;
 517                 }
 518
 519                 $local = wfLocalFile( $this->mDesiredDestName );
 520                 if( $local && $local->exists() ) {
 521                         // We're uploading a new version of an existing file.
 522                         // No creation, so don't watch it if we're not already.
 523                         return $local->getTitle()->userIsWatching();
 524                 } else {
 525                         // New page should get watched if that's our option.
 526                         return $wgUser->getOption( 'watchcreations' );
 527                 }
 528         }
 529
 530
 531         /**
 532          * Provides output to the user for a result of UploadBase::verifyUpload
 533          *
 534          * @param $details Array: result of UploadBase::verifyUpload
 535          */
 536         protected function processVerificationError( $details ) {
 537                 global $wgFileExtensions, $wgLang;
 538
 539                 switch( $details['status'] ) {
 540
 541                         /** Statuses that only require name changing **/
 542                         case UploadBase::MIN_LENGTH_PARTNAME:
 543                                 $this->showRecoverableUploadError( wfMsgHtml( 'minlength1' ) );
 544                                 break;
 545                         case UploadBase::ILLEGAL_FILENAME:
 546                                 $this->showRecoverableUploadError( wfMsgExt( 'illegalfilename',
 547                                         'parseinline', $details['filtered'] ) );
 548                                 break;
 549                         case UploadBase::OVERWRITE_EXISTING_FILE:
 550                                 $this->showRecoverableUploadError( wfMsgExt( $details['overwrite'],
 551                                         'parseinline' ) );
 552                                 break;
 553                         case UploadBase::FILETYPE_MISSING:
 554                                 $this->showRecoverableUploadError( wfMsgExt( 'filetype-missing',
 555                                         'parseinline' ) );
 556                                 break;
 557
 558                         /** Statuses that require reuploading **/
 559                         case UploadBase::EMPTY_FILE:
 560                                 $this->showUploadError( wfMsgHtml( 'emptyfile' ) );
 561                                 break;
 562                         case UploadBase::FILE_TOO_LARGE:
 563                                 $this->showUploadError( wfMsgHtml( 'largefileserver' ) );
 564                                 break;
 565                         case UploadBase::FILETYPE_BADTYPE:
 566                                 $finalExt = $details['finalExt'];
 567                                 $this->showUploadError(
 568                                         wfMsgExt( 'filetype-banned-type',
 569                                                 array( 'parseinline' ),
 570                                                 htmlspecialchars( $finalExt ),
 571                                                 implode(
 572                                                         wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
 573                                                         $wgFileExtensions
 574                                                 ),
 575                                                 $wgLang->formatNum( count( $wgFileExtensions ) )
 576                                         )
 577                                 );
 578                                 break;
 579                         case UploadBase::VERIFICATION_ERROR:
 580                                 unset( $details['status'] );
 581                                 $code = array_shift( $details['details'] );
 582                                 $this->showUploadError( wfMsgExt( $code, 'parseinline', $details['details'] ) );
 583                                 break;
 584                         case UploadBase::HOOK_ABORTED:
 585                                 if ( is_array( $details['error'] ) ) { # allow hooks to return error details in an array
 586                                         $args = $details['error'];
 587                                         $error = array_shift( $args );
 588                                 } else {
 589                                         $error = $details['error'];
 590                                         $args = null;
 591                                 }
 592
 593                                 $this->showUploadError( wfMsgExt( $error, 'parseinline', $args ) );
 594                                 break;
 595                         default:
 596                                 throw new MWException( __METHOD__ . ": Unknown value `{$details['status']}`" );
 597                 }
 598         }
 599
 600         /**
 601          * Remove a temporarily kept file stashed by saveTempUploadedFile().
 602          *
 603          * @return Boolean: success
 604          */
 605         protected function unsaveUploadedFile() {
 606                 global $wgOut;
 607                 if ( !( $this->mUpload instanceof UploadFromStash ) ) {
 608                         return true;
 609                 }
 610                 $success = $this->mUpload->unsaveUploadedFile();
 611                 if ( !$success ) {
 612                         $wgOut->showFileDeleteError( $this->mUpload->getTempPath() );
 613                         return false;
 614                 } else {
 615                         return true;
 616                 }
 617         }
 618
 619         /*** Functions for formatting warnings ***/
 620
 621         /**
 622          * Formats a result of UploadBase::getExistsWarning as HTML
 623          * This check is static and can be done pre-upload via AJAX
 624          *
 625          * @param $exists Array: the result of UploadBase::getExistsWarning
 626          * @return String: empty string if there is no warning or an HTML fragment
 627          */
 628         public static function getExistsWarning( $exists ) {
 629                 global $wgUser;
 630
 631                 if ( !$exists ) {
 632                         return '';
 633                 }
 634
 635                 $file = $exists['file'];
 636                 $filename = $file->getTitle()->getPrefixedText();
 637                 $warning = '';
 638
 639                 $sk = $wgUser->getSkin();
 640
 641                 if( $exists['warning'] == 'exists' ) {
 642                         // Exact match
 643                         $warning = wfMsgExt( 'fileexists', 'parseinline', $filename );
 644                 } elseif( $exists['warning'] == 'page-exists' ) {
 645                         // Page exists but file does not
 646                         $warning = wfMsgExt( 'filepageexists', 'parseinline', $filename );
 647                 } elseif ( $exists['warning'] == 'exists-normalized' ) {
 648                         $warning = wfMsgExt( 'fileexists-extension', 'parseinline', $filename,
 649                                 $exists['normalizedFile']->getTitle()->getPrefixedText() );
 650                 } elseif ( $exists['warning'] == 'thumb' ) {
 651                         // Swapped argument order compared with other messages for backwards compatibility
 652                         $warning = wfMsgExt( 'fileexists-thumbnail-yes', 'parseinline',
 653                                 $exists['thumbFile']->getTitle()->getPrefixedText(), $filename );
 654                 } elseif ( $exists['warning'] == 'thumb-name' ) {
 655                         // Image w/o '180px-' does not exists, but we do not like these filenames
 656                         $name = $file->getName();
 657                         $badPart = substr( $name, 0, strpos( $name, '-' ) + 1 );
 658                         $warning = wfMsgExt( 'file-thumbnail-no', 'parseinline', $badPart );
 659                 } elseif ( $exists['warning'] == 'bad-prefix' ) {
 660                         $warning = wfMsgExt( 'filename-bad-prefix', 'parseinline', $exists['prefix'] );
 661                 } elseif ( $exists['warning'] == 'was-deleted' ) {
 662                         # If the file existed before and was deleted, warn the user of this
 663                         $ltitle = SpecialPage::getTitleFor( 'Log' );
 664                         $llink = $sk->linkKnown(
 665                                 $ltitle,
 666                                 wfMsgHtml( 'deletionlog' ),
 667                                 array(),
 668                                 array(
 669                                         'type' => 'delete',
 670                                         'page' => $filename
 671                                 )
 672                         );
 673                         $warning = wfMsgWikiHtml( 'filewasdeleted', $llink );
 674                 }
 675
 676                 return $warning;
 677         }
 678
 679         /**
 680          * Get a list of warnings
 681          *
 682          * @param $filename String: local filename, e.g. 'file exists', 'non-descriptive filename'
 683          * @return Array: list of warning messages
 684          */
 685         public static function ajaxGetExistsWarning( $filename ) {
 686                 $file = wfFindFile( $filename );
 687                 if( !$file ) {
 688                         // Force local file so we have an object to do further checks against
 689                         // if there isn't an exact match...
 690                         $file = wfLocalFile( $filename );
 691                 }
 692                 $s = '&#160;';
 693                 if ( $file ) {
 694                         $exists = UploadBase::getExistsWarning( $file );
 695                         $warning = self::getExistsWarning( $exists );
 696                         if ( $warning !== '' ) {
 697                                 $s = "<div>$warning</div>";
 698                         }
 699                 }
 700                 return $s;
 701         }
 702
 703         /**
 704          * Construct a warning and a gallery from an array of duplicate files.
 705          */
 706         public static function getDupeWarning( $dupes ) {
 707                 if( $dupes ) {
 708                         global $wgOut;
 709                         $msg = '<gallery>';
 710                         foreach( $dupes as $file ) {
 711                                 $title = $file->getTitle();
 712                                 $msg .= $title->getPrefixedText() .
 713                                         '|' . $title->getText() . "\n";
 714                         }
 715                         $msg .= '</gallery>';
 716                         return '<li>' .
 717                                 wfMsgExt( 'file-exists-duplicate', array( 'parse' ), count( $dupes ) ) .
 718                                 $wgOut->parse( $msg ) .
 719                                 "</li>\n";
 720                 } else {
 721                         return '';
 722                 }
 723         }
 724
 725 }
 726
 727 /**
 728  * Sub class of HTMLForm that provides the form section of SpecialUpload
 729  */
 730 class UploadForm extends HTMLForm {
 731         protected $mWatch;
 732         protected $mForReUpload;
 733         protected $mSessionKey;
 734         protected $mHideIgnoreWarning;
 735         protected $mDestWarningAck;
 736         protected $mDestFile;
 737
 738         protected $mTextTop;
 739         protected $mTextAfterSummary;
 740
 741         protected $mSourceIds;
 742
 743         public function __construct( $options = array() ) {
 744                 $this->mWatch = !empty( $options['watch'] );
 745                 $this->mForReUpload = !empty( $options['forreupload'] );
 746                 $this->mSessionKey = isset( $options['sessionkey'] )
 747                                 ? $options['sessionkey'] : '';
 748                 $this->mHideIgnoreWarning = !empty( $options['hideignorewarning'] );
 749                 $this->mDestWarningAck = !empty( $options['destwarningack'] );
 750                 $this->mDestFile = isset( $options['destfile'] ) ? $options['destfile'] : '';
 751
 752                 $this->mTextTop = isset( $options['texttop'] )
 753                         ? $options['texttop'] : '';
 754
 755                 $this->mTextAfterSummary = isset( $options['textaftersummary'] )
 756                         ? $options['textaftersummary'] : '';
 757
 758                 $sourceDescriptor = $this->getSourceSection();
 759                 $descriptor = $sourceDescriptor
 760                         + $this->getDescriptionSection()
 761                         + $this->getOptionsSection();
 762
 763                 wfRunHooks( 'UploadFormInitDescriptor', array( &$descriptor ) );
 764                 parent::__construct( $descriptor, 'upload' );
 765
 766                 # Set some form properties
 767                 $this->setSubmitText( wfMsg( 'uploadbtn' ) );
 768                 $this->setSubmitName( 'wpUpload' );
 769                 # Used message keys: 'accesskey-upload', 'tooltip-upload'
 770                 $this->setSubmitTooltip( 'upload' );
 771                 $this->setId( 'mw-upload-form' );
 772
 773                 # Build a list of IDs for javascript insertion
 774                 $this->mSourceIds = array();
 775                 foreach ( $sourceDescriptor as $key => $field ) {
 776                         if ( !empty( $field['id'] ) ) {
 777                                 $this->mSourceIds[] = $field['id'];
 778                         }
 779                 }
 780
 781         }
 782
 783         /**
 784          * Get the descriptor of the fieldset that contains the file source
 785          * selection. The section is 'source'
 786          *
 787          * @return Array: descriptor array
 788          */
 789         protected function getSourceSection() {
 790                 global $wgLang, $wgUser, $wgRequest;
 791                 global $wgMaxUploadSize;
 792
 793                 if ( $this->mSessionKey ) {
 794                         return array(
 795                                 'wpSessionKey' => array(
 796                                         'type' => 'hidden',
 797                                         'default' => $this->mSessionKey,
 798                                 ),
 799                                 'wpSourceType' => array(
 800                                         'type' => 'hidden',
 801                                         'default' => 'Stash',
 802                                 ),
 803                         );
 804                 }
 805
 806                 $canUploadByUrl = UploadFromUrl::isEnabled() && $wgUser->isAllowed( 'upload_by_url' );
 807                 $radio = $canUploadByUrl;
 808                 $selectedSourceType = strtolower( $wgRequest->getText( 'wpSourceType', 'File' ) );
 809
 810                 $descriptor = array();
 811                 if ( $this->mTextTop ) {
 812                         $descriptor['UploadFormTextTop'] = array(
 813                                 'type' => 'info',
 814                                 'section' => 'source',
 815                                 'default' => $this->mTextTop,
 816                                 'raw' => true,
 817                         );
 818                 }
 819
 820                 $descriptor['UploadFile'] = array(
 821                         'class' => 'UploadSourceField',
 822                         'section' => 'source',
 823                         'type' => 'file',
 824                         'id' => 'wpUploadFile',
 825                         'label-message' => 'sourcefilename',
 826                         'upload-type' => 'File',
 827                         'radio' => &$radio,
 828                         'help' => wfMsgExt( 'upload-maxfilesize',
 829                                         array( 'parseinline', 'escapenoentities' ),
 830                                         $wgLang->formatSize(
 831                                                 wfShorthandToInteger( min(
 832                                                         wfShorthandToInteger(
 833                                                                 ini_get( 'upload_max_filesize' )
 834                                                         ), $wgMaxUploadSize
 835                                                 ) )
 836                                         )
 837                                 ) . ' ' . wfMsgHtml( 'upload_source_file' ),
 838                         'checked' => $selectedSourceType == 'file',
 839                 );
 840                 if ( $canUploadByUrl ) {
 841                         $descriptor['UploadFileURL'] = array(
 842                                 'class' => 'UploadSourceField',
 843                                 'section' => 'source',
 844                                 'id' => 'wpUploadFileURL',
 845                                 'label-message' => 'sourceurl',
 846                                 'upload-type' => 'url',
 847                                 'radio' => &$radio,
 848                                 'help' => wfMsgExt( 'upload-maxfilesize',
 849                                                 array( 'parseinline', 'escapenoentities' ),
 850                                                 $wgLang->formatSize( $wgMaxUploadSize )
 851                                         ) . ' ' . wfMsgHtml( 'upload_source_url' ),
 852                                 'checked' => $selectedSourceType == 'url',
 853                         );
 854                 }
 855                 wfRunHooks( 'UploadFormSourceDescriptors', array( &$descriptor, &$radio, $selectedSourceType ) );
 856
 857                 $descriptor['Extensions'] = array(
 858                         'type' => 'info',
 859                         'section' => 'source',
 860                         'default' => $this->getExtensionsMessage(),
 861                         'raw' => true,
 862                 );
 863                 return $descriptor;
 864         }
 865
 866         /**
 867          * Get the messages indicating which extensions are preferred and prohibitted.
 868          *
 869          * @return String: HTML string containing the message
 870          */
 871         protected function getExtensionsMessage() {
 872                 # Print a list of allowed file extensions, if so configured.  We ignore
 873                 # MIME type here, it's incomprehensible to most people and too long.
 874                 global $wgLang, $wgCheckFileExtensions, $wgStrictFileExtensions,
 875                 $wgFileExtensions, $wgFileBlacklist;
 876
 877                 if( $wgCheckFileExtensions ) {
 878                         if( $wgStrictFileExtensions ) {
 879                                 # Everything not permitted is banned
 880                                 $extensionsList =
 881                                         '<div id="mw-upload-permitted">' .
 882                                         wfMsgWikiHtml( 'upload-permitted', $wgLang->commaList( $wgFileExtensions ) ) .
 883                                         "</div>\n";
 884                         } else {
 885                                 # We have to list both preferred and prohibited
 886                                 $extensionsList =
 887                                         '<div id="mw-upload-preferred">' .
 888                                         wfMsgWikiHtml( 'upload-preferred', $wgLang->commaList( $wgFileExtensions ) ) .
 889                                         "</div>\n" .
 890                                         '<div id="mw-upload-prohibited">' .
 891                                         wfMsgWikiHtml( 'upload-prohibited', $wgLang->commaList( $wgFileBlacklist ) ) .
 892                                         "</div>\n";
 893                         }
 894                 } else {
 895                         # Everything is permitted.
 896                         $extensionsList = '';
 897                 }
 898                 return $extensionsList;
 899         }
 900
 901         /**
 902          * Get the descriptor of the fieldset that contains the file description
 903          * input. The section is 'description'
 904          *
 905          * @return Array: descriptor array
 906          */
 907         protected function getDescriptionSection() {
 908                 global $wgUser, $wgOut;
 909
 910                 $cols = intval( $wgUser->getOption( 'cols' ) );
 911                 if( $wgUser->getOption( 'editwidth' ) ) {
 912                         $wgOut->addInlineStyle( '#mw-htmlform-description { width: 100%; }' );
 913                 }
 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' => $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                 );
1058
1059                 $wgOut->addScript( Skin::makeVariablesScript( $scriptVars ) );
1060
1061                 // For <charinsert> support
1062                 $wgOut->addScriptFile( 'edit.js' );
1063                 $wgOut->addScriptFile( 'upload.js' );
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