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         /** @var bool Was the DB modified in this request */
  32         protected $wasSaved = false;
  33
  34         /** @var bool True if the submit button was clicked, and the form was posted */
  35         private $submitClicked;
  36
  37         /** @var array Target ID list */
  38         private $ids;
  39
  40         /** @var string Archive name, for reviewing deleted files */
  41         private $archiveName;
  42
  43         /** @var string Edit token for securing image views against XSS */
  44         private $token;
  45
  46         /** @var Title Title object for target parameter */
  47         private $targetObj;
  48
  49         /** @var string Deletion type, may be revision, archive, oldimage, filearchive, logging. */
  50         private $typeName;
  51
  52         /** @var array Array of checkbox specs (message, name, deletion bits) */
  53         private $checks;
  54
  55         /** @var array UI Labels about the current type */
  56         private $typeLabels;
  57
  58         /** @var RevDelList RevDelList object, storing the list of items to be deleted/undeleted */
  59         private $revDelList;
  60
  61         /** @var bool Whether user is allowed to perform the action */
  62         private $mIsAllowed;
  63
  64         /** @var string */
  65         private $otherReason;
  66
  67         /**
  68          * UI labels for each type.
  69          */
  70         private static $UILabels = array(
  71                 'revision' => array(
  72                         'check-label' => 'revdelete-hide-text',
  73                         'success' => 'revdelete-success',
  74                         'failure' => 'revdelete-failure',
  75                         'text' => 'revdelete-text-text',
  76                         'selected'=> 'revdelete-selected-text',
  77                 ),
  78                 'archive' => array(
  79                         'check-label' => 'revdelete-hide-text',
  80                         'success' => 'revdelete-success',
  81                         'failure' => 'revdelete-failure',
  82                         'text' => 'revdelete-text-text',
  83                         'selected'=> 'revdelete-selected-text',
  84                 ),
  85                 'oldimage' => array(
  86                         'check-label' => 'revdelete-hide-image',
  87                         'success' => 'revdelete-success',
  88                         'failure' => 'revdelete-failure',
  89                         'text' => 'revdelete-text-file',
  90                         'selected'=> 'revdelete-selected-file',
  91                 ),
  92                 'filearchive' => array(
  93                         'check-label' => 'revdelete-hide-image',
  94                         'success' => 'revdelete-success',
  95                         'failure' => 'revdelete-failure',
  96                         'text' => 'revdelete-text-file',
  97                         'selected'=> 'revdelete-selected-file',
  98                 ),
  99                 'logging' => array(
 100                         'check-label' => 'revdelete-hide-name',
 101                         'success' => 'logdelete-success',
 102                         'failure' => 'logdelete-failure',
 103                         'text' => 'logdelete-text',
 104                         'selected' => 'logdelete-selected',
 105                 ),
 106         );
 107
 108         public function __construct() {
 109                 parent::__construct( 'Revisiondelete', 'deletedhistory' );
 110         }
 111
 112         public function execute( $par ) {
 113                 $this->checkPermissions();
 114                 $this->checkReadOnly();
 115
 116                 $output = $this->getOutput();
 117                 $user = $this->getUser();
 118
 119                 $this->setHeaders();
 120                 $this->outputHeader();
 121                 $request = $this->getRequest();
 122                 $this->submitClicked = $request->wasPosted() && $request->getBool( 'wpSubmit' );
 123                 # Handle our many different possible input types.
 124                 $ids = $request->getVal( 'ids' );
 125                 if ( !is_null( $ids ) ) {
 126                         # Allow CSV, for backwards compatibility, or a single ID for show/hide links
 127                         $this->ids = explode( ',', $ids );
 128                 } else {
 129                         # Array input
 130                         $this->ids = array_keys( $request->getArray( 'ids', array() ) );
 131                 }
 132                 // $this->ids = array_map( 'intval', $this->ids );
 133                 $this->ids = array_unique( array_filter( $this->ids ) );
 134
 135                 $this->typeName = $request->getVal( 'type' );
 136                 $this->targetObj = Title::newFromText( $request->getText( 'target' ) );
 137
 138                 # For reviewing deleted files...
 139                 $this->archiveName = $request->getVal( 'file' );
 140                 $this->token = $request->getVal( 'token' );
 141                 if ( $this->archiveName && $this->targetObj ) {
 142                         $this->tryShowFile( $this->archiveName );
 143
 144                         return;
 145                 }
 146
 147                 $this->typeName = RevisionDeleter::getCanonicalTypeName( $this->typeName );
 148
 149                 # No targets?
 150                 if ( !$this->typeName || count( $this->ids ) == 0 ) {
 151                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 152                 }
 153
 154                 # Allow the list type to adjust the passed target
 155                 $this->targetObj = RevisionDeleter::suggestTarget(
 156                         $this->typeName,
 157                         $this->targetObj,
 158                         $this->ids
 159                 );
 160
 161                 $this->typeLabels = self::$UILabels[$this->typeName];
 162                 $list = $this->getList();
 163                 $list->reset();
 164                 $bitfield = $list->current()->getBits();
 165                 $this->mIsAllowed = $user->isAllowed( RevisionDeleter::getRestriction( $this->typeName ) );
 166                 $canViewSuppressedOnly = $this->getUser()->isAllowed( 'viewsuppressed' ) &&
 167                         !$this->getUser()->isAllowed( 'suppressrevision' );
 168                 $pageIsSuppressed = $bitfield & Revision::DELETED_RESTRICTED;
 169                 $this->mIsAllowed = $this->mIsAllowed && !( $canViewSuppressedOnly && $pageIsSuppressed );
 170
 171                 $this->otherReason = $request->getVal( 'wpReason' );
 172                 # We need a target page!
 173                 if ( is_null( $this->targetObj ) ) {
 174                         $output->addWikiMsg( 'undelete-header' );
 175
 176                         return;
 177                 }
 178                 # Give a link to the logs/hist for this page
 179                 $this->showConvenienceLinks();
 180
 181                 # Initialise checkboxes
 182                 $this->checks = array(
 183                         # Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name
 184                         array( $this->typeLabels['check-label'], 'wpHidePrimary',
 185                                 RevisionDeleter::getRevdelConstant( $this->typeName )
 186                         ),
 187                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 188                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 189                 );
 190                 if ( $user->isAllowed( 'suppressrevision' ) ) {
 191                         $this->checks[] = array( 'revdelete-hide-restricted',
 192                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 193                 }
 194
 195                 # Either submit or create our form
 196                 if ( $this->mIsAllowed && $this->submitClicked ) {
 197                         $this->submit( $request );
 198                 } else {
 199                         $this->showForm();
 200                 }
 201
 202                 $qc = $this->getLogQueryCond();
 203                 # Show relevant lines from the deletion log
 204                 $deleteLogPage = new LogPage( 'delete' );
 205                 $output->addHTML( "<h2>" . $deleteLogPage->getName()->escaped() . "</h2>\n" );
 206                 LogEventsList::showLogExtract(
 207                         $output,
 208                         'delete',
 209                         $this->targetObj,
 210                         '', /* user */
 211                         array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 212                 );
 213                 # Show relevant lines from the suppression log
 214                 if ( $user->isAllowed( 'suppressionlog' ) ) {
 215                         $suppressLogPage = new LogPage( 'suppress' );
 216                         $output->addHTML( "<h2>" . $suppressLogPage->getName()->escaped() . "</h2>\n" );
 217                         LogEventsList::showLogExtract(
 218                                 $output,
 219                                 'suppress',
 220                                 $this->targetObj,
 221                                 '',
 222                                 array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 223                         );
 224                 }
 225         }
 226
 227         /**
 228          * Show some useful links in the subtitle
 229          */
 230         protected function showConvenienceLinks() {
 231                 # Give a link to the logs/hist for this page
 232                 if ( $this->targetObj ) {
 233                         // Also set header tabs to be for the target.
 234                         $this->getSkin()->setRelevantTitle( $this->targetObj );
 235
 236                         $links = array();
 237                         $links[] = Linker::linkKnown(
 238                                 SpecialPage::getTitleFor( 'Log' ),
 239                                 $this->msg( 'viewpagelogs' )->escaped(),
 240                                 array(),
 241                                 array( 'page' => $this->targetObj->getPrefixedText() )
 242                         );
 243                         if ( !$this->targetObj->isSpecialPage() ) {
 244                                 # Give a link to the page history
 245                                 $links[] = Linker::linkKnown(
 246                                         $this->targetObj,
 247                                         $this->msg( 'pagehist' )->escaped(),
 248                                         array(),
 249                                         array( 'action' => 'history' )
 250                                 );
 251                                 # Link to deleted edits
 252                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 253                                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 254                                         $links[] = Linker::linkKnown(
 255                                                 $undelete,
 256                                                 $this->msg( 'deletedhist' )->escaped(),
 257                                                 array(),
 258                                                 array( 'target' => $this->targetObj->getPrefixedDBkey() )
 259                                         );
 260                                 }
 261                         }
 262                         # Logs themselves don't have histories or archived revisions
 263                         $this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) );
 264                 }
 265         }
 266
 267         /**
 268          * Get the condition used for fetching log snippets
 269          * @return array
 270          */
 271         protected function getLogQueryCond() {
 272                 $conds = array();
 273                 // Revision delete logs for these item
 274                 $conds['log_type'] = array( 'delete', 'suppress' );
 275                 $conds['log_action'] = $this->getList()->getLogAction();
 276                 $conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
 277                 $conds['ls_value'] = $this->ids;
 278
 279                 return $conds;
 280         }
 281
 282         /**
 283          * Show a deleted file version requested by the visitor.
 284          * @todo Mostly copied from Special:Undelete. Refactor.
 285          * @param string $archiveName
 286          * @throws MWException
 287          * @throws PermissionsError
 288          */
 289         protected function tryShowFile( $archiveName ) {
 290                 $repo = RepoGroup::singleton()->getLocalRepo();
 291                 $oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
 292                 $oimage->load();
 293                 // Check if user is allowed to see this file
 294                 if ( !$oimage->exists() ) {
 295                         $this->getOutput()->addWikiMsg( 'revdelete-no-file' );
 296
 297                         return;
 298                 }
 299                 $user = $this->getUser();
 300                 if ( !$oimage->userCan( File::DELETED_FILE, $user ) ) {
 301                         if ( $oimage->isDeleted( File::DELETED_RESTRICTED ) ) {
 302                                 throw new PermissionsError( 'suppressrevision' );
 303                         } else {
 304                                 throw new PermissionsError( 'deletedtext' );
 305                         }
 306                 }
 307                 if ( !$user->matchEditToken( $this->token, $archiveName ) ) {
 308                         $lang = $this->getLanguage();
 309                         $this->getOutput()->addWikiMsg( 'revdelete-show-file-confirm',
 310                                 $this->targetObj->getText(),
 311                                 $lang->userDate( $oimage->getTimestamp(), $user ),
 312                                 $lang->userTime( $oimage->getTimestamp(), $user ) );
 313                         $this->getOutput()->addHTML(
 314                                 Xml::openElement( 'form', array(
 315                                         'method' => 'POST',
 316                                         'action' => $this->getPageTitle()->getLocalURL( array(
 317                                                         'target' => $this->targetObj->getPrefixedDBkey(),
 318                                                         'file' => $archiveName,
 319                                                         'token' => $user->getEditToken( $archiveName ),
 320                                                 ) )
 321                                         )
 322                                 ) .
 323                                 Xml::submitButton( $this->msg( 'revdelete-show-file-submit' )->text() ) .
 324                                 '</form>'
 325                         );
 326
 327                         return;
 328                 }
 329                 $this->getOutput()->disable();
 330                 # We mustn't allow the output to be Squid cached, otherwise
 331                 # if an admin previews a deleted image, and it's cached, then
 332                 # a user without appropriate permissions can toddle off and
 333                 # nab the image, and Squid will serve it
 334                 $this->getRequest()->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 335                 $this->getRequest()->response()->header(
 336                         'Cache-Control: no-cache, no-store, max-age=0, must-revalidate'
 337                 );
 338                 $this->getRequest()->response()->header( 'Pragma: no-cache' );
 339
 340                 $key = $oimage->getStorageKey();
 341                 $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
 342                 $repo->streamFile( $path );
 343         }
 344
 345         /**
 346          * Get the list object for this request
 347          * @return RevDelList
 348          */
 349         protected function getList() {
 350                 if ( is_null( $this->revDelList ) ) {
 351                         $this->revDelList = RevisionDeleter::createList(
 352                                 $this->typeName, $this->getContext(), $this->targetObj, $this->ids
 353                         );
 354                 }
 355
 356                 return $this->revDelList;
 357         }
 358
 359         /**
 360          * Show a list of items that we will operate on, and show a form with checkboxes
 361          * which will allow the user to choose new visibility settings.
 362          */
 363         protected function showForm() {
 364                 $userAllowed = true;
 365
 366                 // Messages: revdelete-selected-text, revdelete-selected-file, logdelete-selected
 367                 $out = $this->getOutput();
 368                 $out->wrapWikiMsg( "<strong>$1</strong>", array( $this->typeLabels['selected'],
 369                         $this->getLanguage()->formatNum( count( $this->ids ) ), $this->targetObj->getPrefixedText() ) );
 370
 371                 $this->addHelpLink( 'Help:RevisionDelete' );
 372                 $out->addHTML( "<ul>" );
 373
 374                 $numRevisions = 0;
 375                 // Live revisions...
 376                 $list = $this->getList();
 377                 // @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
 378                 for ( $list->reset(); $list->current(); $list->next() ) {
 379                         // @codingStandardsIgnoreEnd
 380                         $item = $list->current();
 381
 382                         if ( !$item->canView() ) {
 383                                 if ( !$this->submitClicked ) {
 384                                         throw new PermissionsError( 'suppressrevision' );
 385                                 }
 386                                 $userAllowed = false;
 387                         }
 388
 389                         $numRevisions++;
 390                         $out->addHTML( $item->getHTML() );
 391                 }
 392
 393                 if ( !$numRevisions ) {
 394                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 395                 }
 396
 397                 $out->addHTML( "</ul>" );
 398                 // Explanation text
 399                 $this->addUsageText();
 400
 401                 // Normal sysops can always see what they did, but can't always change it
 402                 if ( !$userAllowed ) {
 403                         return;
 404                 }
 405
 406                 // Show form if the user can submit
 407                 if ( $this->mIsAllowed ) {
 408                         $form = Xml::openElement( 'form', array( 'method' => 'post',
 409                                         'action' => $this->getPageTitle()->getLocalURL( array( 'action' => 'submit' ) ),
 410                                         'id' => 'mw-revdel-form-revisions' ) ) .
 411                                 Xml::fieldset( $this->msg( 'revdelete-legend' )->text() ) .
 412                                 $this->buildCheckBoxes() .
 413                                 Xml::openElement( 'table' ) .
 414                                 "<tr>\n" .
 415                                         '<td class="mw-label">' .
 416                                                 Xml::label( $this->msg( 'revdelete-log' )->text(), 'wpRevDeleteReasonList' ) .
 417                                         '</td>' .
 418                                         '<td class="mw-input">' .
 419                                                 Xml::listDropDown( 'wpRevDeleteReasonList',
 420                                                         $this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->text(),
 421                                                         $this->msg( 'revdelete-reasonotherlist' )->inContentLanguage()->text(),
 422                                                         $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ), 'wpReasonDropDown'
 423                                                 ) .
 424                                         '</td>' .
 425                                 "</tr><tr>\n" .
 426                                         '<td class="mw-label">' .
 427                                                 Xml::label( $this->msg( 'revdelete-otherreason' )->text(), 'wpReason' ) .
 428                                         '</td>' .
 429                                         '<td class="mw-input">' .
 430                                                 Xml::input(
 431                                                         'wpReason',
 432                                                         60,
 433                                                         $this->otherReason,
 434                                                         array( 'id' => 'wpReason', 'maxlength' => 100 )
 435                                                 ) .
 436                                         '</td>' .
 437                                 "</tr><tr>\n" .
 438                                         '<td></td>' .
 439                                         '<td class="mw-submit">' .
 440                                                 Xml::submitButton( $this->msg( 'revdelete-submit', $numRevisions )->text(),
 441                                                         array( 'name' => 'wpSubmit' ) ) .
 442                                         '</td>' .
 443                                 "</tr>\n" .
 444                                 Xml::closeElement( 'table' ) .
 445                                 Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) .
 446                                 Html::hidden( 'target', $this->targetObj->getPrefixedText() ) .
 447                                 Html::hidden( 'type', $this->typeName ) .
 448                                 Html::hidden( 'ids', implode( ',', $this->ids ) ) .
 449                                 Xml::closeElement( 'fieldset' ) . "\n" .
 450                                 Xml::closeElement( 'form' ) . "\n";
 451                         // Show link to edit the dropdown reasons
 452                         if ( $this->getUser()->isAllowed( 'editinterface' ) ) {
 453                                 $link = Linker::link(
 454                                         $this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->getTitle(),
 455                                         $this->msg( 'revdelete-edit-reasonlist' )->escaped(),
 456                                         array(),
 457                                         array( 'action' => 'edit' )
 458                                 );
 459                                 $form .= Xml::tags( 'p', array( 'class' => 'mw-revdel-editreasons' ), $link ) . "\n";
 460                         }
 461                 } else {
 462                         $form = '';
 463                 }
 464                 $out->addHTML( $form );
 465         }
 466
 467         /**
 468          * Show some introductory text
 469          * @todo FIXME: Wikimedia-specific policy text
 470          */
 471         protected function addUsageText() {
 472                 // Messages: revdelete-text-text, revdelete-text-file, logdelete-text
 473                 $this->getOutput()->wrapWikiMsg(
 474                         "<strong>$1</strong>\n$2", $this->typeLabels['text'],
 475                         'revdelete-text-others'
 476                 );
 477
 478                 if ( $this->getUser()->isAllowed( 'suppressrevision' ) ) {
 479                         $this->getOutput()->addWikiMsg( 'revdelete-suppress-text' );
 480                 }
 481
 482                 if ( $this->mIsAllowed ) {
 483                         $this->getOutput()->addWikiMsg( 'revdelete-confirm' );
 484                 }
 485         }
 486
 487         /**
 488          * @return string HTML
 489          */
 490         protected function buildCheckBoxes() {
 491                 $html = '<table>';
 492                 // If there is just one item, use checkboxes
 493                 $list = $this->getList();
 494                 if ( $list->length() == 1 ) {
 495                         $list->reset();
 496                         $bitfield = $list->current()->getBits(); // existing field
 497
 498                         if ( $this->submitClicked ) {
 499                                 $bitfield = RevisionDeleter::extractBitfield( $this->extractBitParams(), $bitfield );
 500                         }
 501
 502                         foreach ( $this->checks as $item ) {
 503                                 // Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name,
 504                                 // revdelete-hide-comment, revdelete-hide-user, revdelete-hide-restricted
 505                                 list( $message, $name, $field ) = $item;
 506                                 $innerHTML = Xml::checkLabel(
 507                                         $this->msg( $message )->text(),
 508                                         $name,
 509                                         $name,
 510                                         $bitfield & $field
 511                                 );
 512
 513                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 514                                         $innerHTML = "<b>$innerHTML</b>";
 515                                 }
 516
 517                                 $line = Xml::tags( 'td', array( 'class' => 'mw-input' ), $innerHTML );
 518                                 $html .= "<tr>$line</tr>\n";
 519                         }
 520                 } else {
 521                         // Otherwise, use tri-state radios
 522                         $html .= '<tr>';
 523                         $html .= '<th class="mw-revdel-checkbox">'
 524                                 . $this->msg( 'revdelete-radio-same' )->escaped() . '</th>';
 525                         $html .= '<th class="mw-revdel-checkbox">'
 526                                 . $this->msg( 'revdelete-radio-unset' )->escaped() . '</th>';
 527                         $html .= '<th class="mw-revdel-checkbox">'
 528                                 . $this->msg( 'revdelete-radio-set' )->escaped() . '</th>';
 529                         $html .= "<th></th></tr>\n";
 530                         foreach ( $this->checks as $item ) {
 531                                 // Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name,
 532                                 // revdelete-hide-comment, revdelete-hide-user, revdelete-hide-restricted
 533                                 list( $message, $name, $field ) = $item;
 534                                 // If there are several items, use third state by default...
 535                                 if ( $this->submitClicked ) {
 536                                         $selected = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 537                                 } else {
 538                                         $selected = -1; // use existing field
 539                                 }
 540                                 $line = '<td class="mw-revdel-checkbox">' . Xml::radio( $name, -1, $selected == -1 ) . '</td>';
 541                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 0, $selected == 0 ) . '</td>';
 542                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 1, $selected == 1 ) . '</td>';
 543                                 $label = $this->msg( $message )->escaped();
 544                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 545                                         $label = "<b>$label</b>";
 546                                 }
 547                                 $line .= "<td>$label</td>";
 548                                 $html .= "<tr>$line</tr>\n";
 549                         }
 550                 }
 551
 552                 $html .= '</table>';
 553
 554                 return $html;
 555         }
 556
 557         /**
 558          * UI entry point for form submission.
 559          * @throws PermissionsError
 560          * @return bool
 561          */
 562         protected function submit() {
 563                 # Check edit token on submission
 564                 $token = $this->getRequest()->getVal( 'wpEditToken' );
 565                 if ( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) {
 566                         $this->getOutput()->addWikiMsg( 'sessionfailure' );
 567
 568                         return false;
 569                 }
 570                 $bitParams = $this->extractBitParams();
 571                 // from dropdown
 572                 $listReason = $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' );
 573                 $comment = $listReason;
 574                 if ( $comment === 'other' ) {
 575                         $comment = $this->otherReason;
 576                 } elseif ( $this->otherReason !== '' ) {
 577                         // Entry from drop down menu + additional comment
 578                         $comment .= $this->msg( 'colon-separator' )->inContentLanguage()->text()
 579                                 . $this->otherReason;
 580                 }
 581                 # Can the user set this field?
 582                 if ( $bitParams[Revision::DELETED_RESTRICTED] == 1
 583                         && !$this->getUser()->isAllowed( 'suppressrevision' )
 584                 ) {
 585                         throw new PermissionsError( 'suppressrevision' );
 586                 }
 587                 # If the save went through, go to success message...
 588                 $status = $this->save( $bitParams, $comment, $this->targetObj );
 589                 if ( $status->isGood() ) {
 590                         $this->success();
 591
 592                         return true;
 593                 } else {
 594                         # ...otherwise, bounce back to form...
 595                         $this->failure( $status );
 596                 }
 597
 598                 return false;
 599         }
 600
 601         /**
 602          * Report that the submit operation succeeded
 603          */
 604         protected function success() {
 605                 // Messages: revdelete-success, logdelete-success
 606                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
 607                 $this->getOutput()->wrapWikiMsg(
 608                         "<div class=\"successbox\">\n$1\n</div>",
 609                         $this->typeLabels['success']
 610                 );
 611                 $this->wasSaved = true;
 612                 $this->revDelList->reloadFromMaster();
 613                 $this->showForm();
 614         }
 615
 616         /**
 617          * Report that the submit operation failed
 618          * @param Status $status
 619          */
 620         protected function failure( $status ) {
 621                 // Messages: revdelete-failure, logdelete-failure
 622                 $this->getOutput()->setPageTitle( $this->msg( 'actionfailed' ) );
 623                 $this->getOutput()->addWikiText( '<div class="errorbox">' .
 624                         $status->getWikiText( $this->typeLabels['failure'] ) .
 625                         '</div>'
 626                 );
 627                 $this->showForm();
 628         }
 629
 630         /**
 631          * Put together an array that contains -1, 0, or the *_deleted const for each bit
 632          *
 633          * @return array
 634          */
 635         protected function extractBitParams() {
 636                 $bitfield = array();
 637                 foreach ( $this->checks as $item ) {
 638                         list( /* message */, $name, $field ) = $item;
 639                         $val = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 640                         if ( $val < -1 || $val > 1 ) {
 641                                 $val = -1; // -1 for existing value
 642                         }
 643                         $bitfield[$field] = $val;
 644                 }
 645                 if ( !isset( $bitfield[Revision::DELETED_RESTRICTED] ) ) {
 646                         $bitfield[Revision::DELETED_RESTRICTED] = 0;
 647                 }
 648
 649                 return $bitfield;
 650         }
 651
 652         /**
 653          * Do the write operations. Simple wrapper for RevDel*List::setVisibility().
 654          * @param int $bitfield
 655          * @param string $reason
 656          * @param Title $title
 657          * @return Status
 658          */
 659         protected function save( $bitfield, $reason, $title ) {
 660                 return $this->getList()->setVisibility(
 661                         array( 'value' => $bitfield, 'comment' => $reason )
 662                 );
 663         }
 664
 665         protected function getGroupName() {
 666                 return 'pagetools';
 667         }
 668 }