includes/specials/SpecialRevisiondelete.php

   1 <?php
   2 /**
   3  * Implements Special:Revisiondelete
   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  */
  23
  24 /**
  25  * Special page allowing users with the appropriate permissions to view
  26  * and hide revisions. Log items can also be hidden.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialRevisionDelete extends UnlistedSpecialPage {
  31         /** True if the submit button was clicked, and the form was posted */
  32         var $submitClicked;
  33
  34         /** Target ID list */
  35         var $ids;
  36
  37         /** Archive name, for reviewing deleted files */
  38         var $archiveName;
  39
  40         /** Edit token for securing image views against XSS */
  41         var $token;
  42
  43         /** Title object for target parameter */
  44         var $targetObj;
  45
  46         /** Deletion type, may be revision, archive, oldimage, filearchive, logging. */
  47         var $typeName;
  48
  49         /** Array of checkbox specs (message, name, deletion bits) */
  50         var $checks;
  51
  52         /** UI Labels about the current type */
  53         var $typeLabels;
  54
  55         /** The RevDel_List object, storing the list of items to be deleted/undeleted */
  56         var $list;
  57
  58         /** Was the DB modified in this request */
  59         protected $wasSaved = false;
  60
  61         /**
  62          * UI labels for each type.
  63          */
  64         static $UILabels = array(
  65                 'revision' => array(
  66                         'check-label' => 'revdelete-hide-text',
  67                         'success' => 'revdelete-success',
  68                         'failure' => 'revdelete-failure',
  69                         'text' => 'revdelete-text-text',
  70                 ),
  71                 'archive' => array(
  72                         'check-label' => 'revdelete-hide-text',
  73                         'success' => 'revdelete-success',
  74                         'failure' => 'revdelete-failure',
  75                         'text' => 'revdelete-text-text',
  76                 ),
  77                 'oldimage' => array(
  78                         'check-label' => 'revdelete-hide-image',
  79                         'success' => 'revdelete-success',
  80                         'failure' => 'revdelete-failure',
  81                         'text' => 'revdelete-text-file',
  82                 ),
  83                 'filearchive' => array(
  84                         'check-label' => 'revdelete-hide-image',
  85                         'success' => 'revdelete-success',
  86                         'failure' => 'revdelete-failure',
  87                         'text' => 'revdelete-text-file',
  88                 ),
  89                 'logging' => array(
  90                         'check-label' => 'revdelete-hide-name',
  91                         'success' => 'logdelete-success',
  92                         'failure' => 'logdelete-failure',
  93                         'text' => 'logdelete-text',
  94                 ),
  95         );
  96
  97         public function __construct() {
  98                 parent::__construct( 'Revisiondelete', 'deletedhistory' );
  99         }
 100
 101         public function execute( $par ) {
 102                 $this->checkPermissions();
 103                 $this->checkReadOnly();
 104
 105                 $output = $this->getOutput();
 106                 $user = $this->getUser();
 107
 108                 $this->setHeaders();
 109                 $this->outputHeader();
 110                 $request = $this->getRequest();
 111                 $this->submitClicked = $request->wasPosted() && $request->getBool( 'wpSubmit' );
 112                 # Handle our many different possible input types.
 113                 $ids = $request->getVal( 'ids' );
 114                 if ( !is_null( $ids ) ) {
 115                         # Allow CSV, for backwards compatibility, or a single ID for show/hide links
 116                         $this->ids = explode( ',', $ids );
 117                 } else {
 118                         # Array input
 119                         $this->ids = array_keys( $request->getArray( 'ids', array() ) );
 120                 }
 121                 // $this->ids = array_map( 'intval', $this->ids );
 122                 $this->ids = array_unique( array_filter( $this->ids ) );
 123
 124                 if ( $request->getVal( 'action' ) == 'historysubmit' || $request->getVal( 'action' ) == 'revisiondelete' ) {
 125                         // For show/hide form submission from history page
 126                         // Since we are access through index.php?title=XXX&action=historysubmit
 127                         // getFullTitle() will contain the target title and not our title
 128                         $this->targetObj = $this->getFullTitle();
 129                         $this->typeName = 'revision';
 130                 } else {
 131                         $this->typeName = $request->getVal( 'type' );
 132                         $this->targetObj = Title::newFromText( $request->getText( 'target' ) );
 133                 }
 134
 135                 # For reviewing deleted files...
 136                 $this->archiveName = $request->getVal( 'file' );
 137                 $this->token = $request->getVal( 'token' );
 138                 if ( $this->archiveName && $this->targetObj ) {
 139                         $this->tryShowFile( $this->archiveName );
 140                         return;
 141                 }
 142
 143                 $this->typeName = RevisionDeleter::getCanonicalTypeName( $this->typeName );
 144
 145                 # No targets?
 146                 if ( !$this->typeName || count( $this->ids ) == 0 ) {
 147                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 148                 }
 149                 $this->typeLabels = self::$UILabels[$this->typeName];
 150                 $this->mIsAllowed = $user->isAllowed( RevisionDeleter::getRestriction( $this->typeName ) );
 151
 152                 # Allow the list type to adjust the passed target
 153                 $this->targetObj = RevisionDeleter::suggestTarget( $this->typeName, $this->targetObj, $this->ids );
 154
 155                 $this->otherReason = $request->getVal( 'wpReason' );
 156                 # We need a target page!
 157                 if ( is_null( $this->targetObj ) ) {
 158                         $output->addWikiMsg( 'undelete-header' );
 159                         return;
 160                 }
 161                 # Give a link to the logs/hist for this page
 162                 $this->showConvenienceLinks();
 163
 164                 # Initialise checkboxes
 165                 $this->checks = array(
 166                         array( $this->typeLabels['check-label'], 'wpHidePrimary',
 167                                 RevisionDeleter::getRevdelConstant( $this->typeName )
 168                         ),
 169                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 170                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 171                 );
 172                 if ( $user->isAllowed( 'suppressrevision' ) ) {
 173                         $this->checks[] = array( 'revdelete-hide-restricted',
 174                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 175                 }
 176
 177                 # Either submit or create our form
 178                 if ( $this->mIsAllowed && $this->submitClicked ) {
 179                         $this->submit( $request );
 180                 } else {
 181                         $this->showForm();
 182                 }
 183
 184                 $qc = $this->getLogQueryCond();
 185                 # Show relevant lines from the deletion log
 186                 $deleteLogPage = new LogPage( 'delete' );
 187                 $output->addHTML( "<h2>" . $deleteLogPage->getName()->escaped() . "</h2>\n" );
 188                 LogEventsList::showLogExtract(
 189                         $output,
 190                         'delete',
 191                         $this->targetObj,
 192                         '', /* user */
 193                         array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 194                 );
 195                 # Show relevant lines from the suppression log
 196                 if ( $user->isAllowed( 'suppressionlog' ) ) {
 197                         $suppressLogPage = new LogPage( 'suppress' );
 198                         $output->addHTML( "<h2>" . $suppressLogPage->getName()->escaped() . "</h2>\n" );
 199                         LogEventsList::showLogExtract(
 200                                 $output,
 201                                 'suppress',
 202                                 $this->targetObj,
 203                                 '',
 204                                 array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 205                         );
 206                 }
 207         }
 208
 209         /**
 210          * Show some useful links in the subtitle
 211          */
 212         protected function showConvenienceLinks() {
 213                 # Give a link to the logs/hist for this page
 214                 if ( $this->targetObj ) {
 215                         // Also set header tabs to be for the target.
 216                         $this->getSkin()->setRelevantTitle( $this->targetObj );
 217
 218                         $links = array();
 219                         $links[] = Linker::linkKnown(
 220                                 SpecialPage::getTitleFor( 'Log' ),
 221                                 $this->msg( 'viewpagelogs' )->escaped(),
 222                                 array(),
 223                                 array( 'page' => $this->targetObj->getPrefixedText() )
 224                         );
 225                         if ( !$this->targetObj->isSpecialPage() ) {
 226                                 # Give a link to the page history
 227                                 $links[] = Linker::linkKnown(
 228                                         $this->targetObj,
 229                                         $this->msg( 'pagehist' )->escaped(),
 230                                         array(),
 231                                         array( 'action' => 'history' )
 232                                 );
 233                                 # Link to deleted edits
 234                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 235                                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 236                                         $links[] = Linker::linkKnown(
 237                                                 $undelete,
 238                                                 $this->msg( 'deletedhist' )->escaped(),
 239                                                 array(),
 240                                                 array( 'target' => $this->targetObj->getPrefixedDBkey() )
 241                                         );
 242                                 }
 243                         }
 244                         # Logs themselves don't have histories or archived revisions
 245                         $this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) );
 246                 }
 247         }
 248
 249         /**
 250          * Get the condition used for fetching log snippets
 251          * @return array
 252          */
 253         protected function getLogQueryCond() {
 254                 $conds = array();
 255                 // Revision delete logs for these item
 256                 $conds['log_type'] = array( 'delete', 'suppress' );
 257                 $conds['log_action'] = $this->getList()->getLogAction();
 258                 $conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
 259                 $conds['ls_value'] = $this->ids;
 260                 return $conds;
 261         }
 262
 263         /**
 264          * Show a deleted file version requested by the visitor.
 265          * TODO Mostly copied from Special:Undelete. Refactor.
 266          */
 267         protected function tryShowFile( $archiveName ) {
 268                 $repo = RepoGroup::singleton()->getLocalRepo();
 269                 $oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
 270                 $oimage->load();
 271                 // Check if user is allowed to see this file
 272                 if ( !$oimage->exists() ) {
 273                         $this->getOutput()->addWikiMsg( 'revdelete-no-file' );
 274                         return;
 275                 }
 276                 $user = $this->getUser();
 277                 if ( !$oimage->userCan( File::DELETED_FILE, $user ) ) {
 278                         if ( $oimage->isDeleted( File::DELETED_RESTRICTED ) ) {
 279                                 throw new PermissionsError( 'suppressrevision' );
 280                         } else {
 281                                 throw new PermissionsError( 'deletedtext' );
 282                         }
 283                 }
 284                 if ( !$user->matchEditToken( $this->token, $archiveName ) ) {
 285                         $lang = $this->getLanguage();
 286                         $this->getOutput()->addWikiMsg( 'revdelete-show-file-confirm',
 287                                 $this->targetObj->getText(),
 288                                 $lang->userDate( $oimage->getTimestamp(), $user ),
 289                                 $lang->userTime( $oimage->getTimestamp(), $user ) );
 290                         $this->getOutput()->addHTML(
 291                                 Xml::openElement( 'form', array(
 292                                         'method' => 'POST',
 293                                         'action' => $this->getPageTitle()->getLocalURL( array(
 294                                                         'target' => $this->targetObj->getPrefixedDBkey(),
 295                                                         'file' => $archiveName,
 296                                                         'token' => $user->getEditToken( $archiveName ),
 297                                                 ) )
 298                                         )
 299                                 ) .
 300                                 Xml::submitButton( $this->msg( 'revdelete-show-file-submit' )->text() ) .
 301                                 '</form>'
 302                         );
 303                         return;
 304                 }
 305                 $this->getOutput()->disable();
 306                 # We mustn't allow the output to be Squid cached, otherwise
 307                 # if an admin previews a deleted image, and it's cached, then
 308                 # a user without appropriate permissions can toddle off and
 309                 # nab the image, and Squid will serve it
 310                 $this->getRequest()->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 311                 $this->getRequest()->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 312                 $this->getRequest()->response()->header( 'Pragma: no-cache' );
 313
 314                 $key = $oimage->getStorageKey();
 315                 $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
 316                 $repo->streamFile( $path );
 317         }
 318
 319         /**
 320          * Get the list object for this request
 321          */
 322         protected function getList() {
 323                 if ( is_null( $this->list ) ) {
 324                         $this->list = RevisionDeleter::createList(
 325                                 $this->typeName, $this->getContext(), $this->targetObj, $this->ids
 326                         );
 327                 }
 328                 return $this->list;
 329         }
 330
 331         /**
 332          * Show a list of items that we will operate on, and show a form with checkboxes
 333          * which will allow the user to choose new visibility settings.
 334          */
 335         protected function showForm() {
 336                 $UserAllowed = true;
 337
 338                 if ( $this->typeName == 'logging' ) {
 339                         $this->getOutput()->addWikiMsg( 'logdelete-selected', $this->getLanguage()->formatNum( count( $this->ids ) ) );
 340                 } else {
 341                         $this->getOutput()->addWikiMsg( 'revdelete-selected',
 342                                 $this->targetObj->getPrefixedText(), count( $this->ids ) );
 343                 }
 344
 345                 $this->getOutput()->addHTML( "<ul>" );
 346
 347                 $numRevisions = 0;
 348                 // Live revisions...
 349                 $list = $this->getList();
 350                 for ( $list->reset(); $list->current(); $list->next() ) {
 351                         $item = $list->current();
 352                         if ( !$item->canView() ) {
 353                                 if ( !$this->submitClicked ) {
 354                                         throw new PermissionsError( 'suppressrevision' );
 355                                 }
 356                                 $UserAllowed = false;
 357                         }
 358                         $numRevisions++;
 359                         $this->getOutput()->addHTML( $item->getHTML() );
 360                 }
 361
 362                 if ( !$numRevisions ) {
 363                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 364                 }
 365
 366                 $this->getOutput()->addHTML( "</ul>" );
 367                 // Explanation text
 368                 $this->addUsageText();
 369
 370                 // Normal sysops can always see what they did, but can't always change it
 371                 if ( !$UserAllowed ) {
 372                         return;
 373                 }
 374
 375                 // Show form if the user can submit
 376                 if ( $this->mIsAllowed ) {
 377                         $out = Xml::openElement( 'form', array( 'method' => 'post',
 378                                         'action' => $this->getPageTitle()->getLocalURL( array( 'action' => 'submit' ) ),
 379                                         'id' => 'mw-revdel-form-revisions' ) ) .
 380                                 Xml::fieldset( $this->msg( 'revdelete-legend' )->text() ) .
 381                                 $this->buildCheckBoxes() .
 382                                 Xml::openElement( 'table' ) .
 383                                 "<tr>\n" .
 384                                         '<td class="mw-label">' .
 385                                                 Xml::label( $this->msg( 'revdelete-log' )->text(), 'wpRevDeleteReasonList' ) .
 386                                         '</td>' .
 387                                         '<td class="mw-input">' .
 388                                                 Xml::listDropDown( 'wpRevDeleteReasonList',
 389                                                         $this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->text(),
 390                                                         $this->msg( 'revdelete-reasonotherlist' )->inContentLanguage()->text(),
 391                                                         $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ), 'wpReasonDropDown', 1
 392                                                 ) .
 393                                         '</td>' .
 394                                 "</tr><tr>\n" .
 395                                         '<td class="mw-label">' .
 396                                                 Xml::label( $this->msg( 'revdelete-otherreason' )->text(), 'wpReason' ) .
 397                                         '</td>' .
 398                                         '<td class="mw-input">' .
 399                                                 Xml::input( 'wpReason', 60, $this->otherReason, array( 'id' => 'wpReason', 'maxlength' => 100 ) ) .
 400                                         '</td>' .
 401                                 "</tr><tr>\n" .
 402                                         '<td></td>' .
 403                                         '<td class="mw-submit">' .
 404                                                 Xml::submitButton( $this->msg( 'revdelete-submit', $numRevisions )->text(),
 405                                                         array( 'name' => 'wpSubmit' ) ) .
 406                                         '</td>' .
 407                                 "</tr>\n" .
 408                                 Xml::closeElement( 'table' ) .
 409                                 Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) .
 410                                 Html::hidden( 'target', $this->targetObj->getPrefixedText() ) .
 411                                 Html::hidden( 'type', $this->typeName ) .
 412                                 Html::hidden( 'ids', implode( ',', $this->ids ) ) .
 413                                 Xml::closeElement( 'fieldset' ) . "\n";
 414                 } else {
 415                         $out = '';
 416                 }
 417                 if ( $this->mIsAllowed ) {
 418                         $out .= Xml::closeElement( 'form' ) . "\n";
 419                         // Show link to edit the dropdown reasons
 420                         if ( $this->getUser()->isAllowed( 'editinterface' ) ) {
 421                                 $title = Title::makeTitle( NS_MEDIAWIKI, 'Revdelete-reason-dropdown' );
 422                                 $link = Linker::link(
 423                                         $title,
 424                                         $this->msg( 'revdelete-edit-reasonlist' )->escaped(),
 425                                         array(),
 426                                         array( 'action' => 'edit' )
 427                                 );
 428                                 $out .= Xml::tags( 'p', array( 'class' => 'mw-revdel-editreasons' ), $link ) . "\n";
 429                         }
 430                 }
 431                 $this->getOutput()->addHTML( $out );
 432         }
 433
 434         /**
 435          * Show some introductory text
 436          * @todo FIXME: Wikimedia-specific policy text
 437          */
 438         protected function addUsageText() {
 439                 $this->getOutput()->wrapWikiMsg( "<strong>$1</strong>\n$2", $this->typeLabels['text'], 'revdelete-text-others' );
 440                 if ( $this->getUser()->isAllowed( 'suppressrevision' ) ) {
 441                         $this->getOutput()->addWikiMsg( 'revdelete-suppress-text' );
 442                 }
 443                 if ( $this->mIsAllowed ) {
 444                         $this->getOutput()->addWikiMsg( 'revdelete-confirm' );
 445                 }
 446         }
 447
 448         /**
 449          * @return String: HTML
 450          */
 451         protected function buildCheckBoxes() {
 452                 $html = '<table>';
 453                 // If there is just one item, use checkboxes
 454                 $list = $this->getList();
 455                 if ( $list->length() == 1 ) {
 456                         $list->reset();
 457                         $bitfield = $list->current()->getBits(); // existing field
 458                         if ( $this->submitClicked ) {
 459                                 $bitfield = RevisionDeleter::extractBitfield( $this->extractBitParams(), $bitfield );
 460                         }
 461                         foreach ( $this->checks as $item ) {
 462                                 list( $message, $name, $field ) = $item;
 463                                 $innerHTML = Xml::checkLabel( $this->msg( $message )->text(), $name, $name, $bitfield & $field );
 464                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 465                                         $innerHTML = "<b>$innerHTML</b>";
 466                                 }
 467                                 $line = Xml::tags( 'td', array( 'class' => 'mw-input' ), $innerHTML );
 468                                 $html .= "<tr>$line</tr>\n";
 469                         }
 470                 // Otherwise, use tri-state radios
 471                 } else {
 472                         $html .= '<tr>';
 473                         $html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-same' )->escaped() . '</th>';
 474                         $html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-unset' )->escaped() . '</th>';
 475                         $html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-set' )->escaped() . '</th>';
 476                         $html .= "<th></th></tr>\n";
 477                         foreach ( $this->checks as $item ) {
 478                                 list( $message, $name, $field ) = $item;
 479                                 // If there are several items, use third state by default...
 480                                 if ( $this->submitClicked ) {
 481                                         $selected = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 482                                 } else {
 483                                         $selected = -1; // use existing field
 484                                 }
 485                                 $line = '<td class="mw-revdel-checkbox">' . Xml::radio( $name, -1, $selected == -1 ) . '</td>';
 486                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 0, $selected == 0 ) . '</td>';
 487                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 1, $selected == 1 ) . '</td>';
 488                                 $label = $this->msg( $message )->escaped();
 489                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 490                                         $label = "<b>$label</b>";
 491                                 }
 492                                 $line .= "<td>$label</td>";
 493                                 $html .= "<tr>$line</tr>\n";
 494                         }
 495                 }
 496
 497                 $html .= '</table>';
 498                 return $html;
 499         }
 500
 501         /**
 502          * UI entry point for form submission.
 503          * @throws PermissionsError
 504          * @return bool
 505          */
 506         protected function submit() {
 507                 # Check edit token on submission
 508                 $token = $this->getRequest()->getVal( 'wpEditToken' );
 509                 if ( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) {
 510                         $this->getOutput()->addWikiMsg( 'sessionfailure' );
 511                         return false;
 512                 }
 513                 $bitParams = $this->extractBitParams();
 514                 $listReason = $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ); // from dropdown
 515                 $comment = $listReason;
 516                 if ( $comment != 'other' && $this->otherReason != '' ) {
 517                         // Entry from drop down menu + additional comment
 518                         $comment .= $this->msg( 'colon-separator' )->inContentLanguage()->text() . $this->otherReason;
 519                 } elseif ( $comment == 'other' ) {
 520                         $comment = $this->otherReason;
 521                 }
 522                 # Can the user set this field?
 523                 if ( $bitParams[Revision::DELETED_RESTRICTED] == 1 && !$this->getUser()->isAllowed( 'suppressrevision' ) ) {
 524                         throw new PermissionsError( 'suppressrevision' );
 525                 }
 526                 # If the save went through, go to success message...
 527                 $status = $this->save( $bitParams, $comment, $this->targetObj );
 528                 if ( $status->isGood() ) {
 529                         $this->success();
 530                         return true;
 531                 # ...otherwise, bounce back to form...
 532                 } else {
 533                         $this->failure( $status );
 534                 }
 535                 return false;
 536         }
 537
 538         /**
 539          * Report that the submit operation succeeded
 540          */
 541         protected function success() {
 542                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
 543                 $this->getOutput()->wrapWikiMsg( "<span class=\"success\">\n$1\n</span>", $this->typeLabels['success'] );
 544                 $this->wasSaved = true;
 545                 $this->list->reloadFromMaster();
 546                 $this->showForm();
 547         }
 548
 549         /**
 550          * Report that the submit operation failed
 551          */
 552         protected function failure( $status ) {
 553                 $this->getOutput()->setPageTitle( $this->msg( 'actionfailed' ) );
 554                 $this->getOutput()->addWikiText( $status->getWikiText( $this->typeLabels['failure'] ) );
 555                 $this->showForm();
 556         }
 557
 558         /**
 559          * Put together an array that contains -1, 0, or the *_deleted const for each bit
 560          *
 561          * @return array
 562          */
 563         protected function extractBitParams() {
 564                 $bitfield = array();
 565                 foreach ( $this->checks as $item ) {
 566                         list( /* message */, $name, $field ) = $item;
 567                         $val = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 568                         if ( $val < -1 || $val > 1 ) {
 569                                 $val = -1; // -1 for existing value
 570                         }
 571                         $bitfield[$field] = $val;
 572                 }
 573                 if ( !isset( $bitfield[Revision::DELETED_RESTRICTED] ) ) {
 574                         $bitfield[Revision::DELETED_RESTRICTED] = 0;
 575                 }
 576                 return $bitfield;
 577         }
 578
 579         /**
 580          * Do the write operations. Simple wrapper for RevDel_*List::setVisibility().
 581          * @param $bitfield
 582          * @param $reason
 583          * @param $title
 584          * @return
 585          */
 586         protected function save( $bitfield, $reason, $title ) {
 587                 return $this->getList()->setVisibility(
 588                         array( 'value' => $bitfield, 'comment' => $reason )
 589                 );
 590         }
 591
 592         protected function getGroupName() {
 593                 return 'pagetools';
 594         }
 595 }