SpecialRevisionDelete.php
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SpecialRevisionDelete.php
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	<?php
	/**
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	* http://www.gnu.org/copyleft/gpl.html
	*
	* @file
	*/

	namespace MediaWiki\Specials;

	use MediaWiki\CommentStore\CommentStore;
	use MediaWiki\Exception\ErrorPageError;
	use MediaWiki\Exception\PermissionsError;
	use MediaWiki\Exception\UserBlockedError;
	use MediaWiki\FileRepo\File\File;
	use MediaWiki\FileRepo\RepoGroup;
	use MediaWiki\Html\Html;
	use MediaWiki\HTMLForm\HTMLForm;
	use MediaWiki\Logging\LogEventsList;
	use MediaWiki\Logging\LogPage;
	use MediaWiki\Permissions\PermissionManager;
	use MediaWiki\Revision\RevisionRecord;
	use MediaWiki\SpecialPage\SpecialPage;
	use MediaWiki\SpecialPage\UnlistedSpecialPage;
	use MediaWiki\Status\Status;
	use MediaWiki\Title\Title;
	use RevDelList;
	use RevisionDeleter;

	/**
	* Special page allowing users with the appropriate permissions to view
	* and hide revisions. Log items can also be hidden.
	*
	* @ingroup SpecialPage
	*/
	class SpecialRevisionDelete extends UnlistedSpecialPage {
	/** @var bool Was the DB modified in this request */
	protected $wasSaved = false;

	/** @var bool True if the submit button was clicked, and the form was posted */
	private $submitClicked;

	/** @var array Target ID list */
	private $ids;

	/** @var string Archive name, for reviewing deleted files */
	private $archiveName;

	/** @var string Edit token for securing image views against XSS */
	private $token;

	/** @var Title Title object for target parameter */
	private $targetObj;

	/** @var string Deletion type, may be revision, archive, oldimage, filearchive, logging. */
	private $typeName;

	/** @var array Array of checkbox specs (message, name, deletion bits) */
	private $checks;

	/** @var array UI Labels about the current type */
	private $typeLabels;

	/** @var RevDelList RevDelList object, storing the list of items to be deleted/undeleted */
	private $revDelList;

	/** @var bool Whether user is allowed to perform the action */
	private $mIsAllowed;

	/** @var string */
	private $otherReason;

	private PermissionManager $permissionManager;
	private RepoGroup $repoGroup;

	/**
	* UI labels for each type.
	*/
	private const UI_LABELS = [
	'revision' => [
	'check-label' => 'revdelete-hide-text',
	'success' => 'revdelete-success',
	'failure' => 'revdelete-failure',
	'text' => 'revdelete-text-text',
	'selected' => 'revdelete-selected-text',
	],
	'archive' => [
	'check-label' => 'revdelete-hide-text',
	'success' => 'revdelete-success',
	'failure' => 'revdelete-failure',
	'text' => 'revdelete-text-text',
	'selected' => 'revdelete-selected-text',
	],
	'oldimage' => [
	'check-label' => 'revdelete-hide-image',
	'success' => 'revdelete-success',
	'failure' => 'revdelete-failure',
	'text' => 'revdelete-text-file',
	'selected' => 'revdelete-selected-file',
	],
	'filearchive' => [
	'check-label' => 'revdelete-hide-image',
	'success' => 'revdelete-success',
	'failure' => 'revdelete-failure',
	'text' => 'revdelete-text-file',
	'selected' => 'revdelete-selected-file',
	],
	'logging' => [
	'check-label' => 'revdelete-hide-name',
	'success' => 'logdelete-success',
	'failure' => 'logdelete-failure',
	'text' => 'logdelete-text',
	'selected' => 'logdelete-selected',
	],
	];

	public function __construct( PermissionManager $permissionManager, RepoGroup $repoGroup ) {
	parent::__construct( 'Revisiondelete' );

	$this->permissionManager = $permissionManager;
	$this->repoGroup = $repoGroup;
	}

	public function doesWrites() {
	return true;
	}

	public function execute( $par ) {
	$this->useTransactionalTimeLimit();

	$this->checkPermissions();
	$this->checkReadOnly();

	$output = $this->getOutput();
	$user = $this->getUser();

	$this->setHeaders();
	$this->outputHeader();
	$request = $this->getRequest();
	$this->submitClicked = $request->wasPosted() && $request->getBool( 'wpSubmit' );
	# Handle our many different possible input types.
	$ids = $request->getVal( 'ids' );
	if ( $ids !== null ) {
	# Allow CSV, for backwards compatibility, or a single ID for show/hide links
	$this->ids = explode( ',', $ids );
	} else {
	# Array input
	$this->ids = array_keys( $request->getArray( 'ids', [] ) );
	}
	// $this->ids = array_map( 'intval', $this->ids );
	$this->ids = array_unique( array_filter( $this->ids ) );

	$this->typeName = $request->getVal( 'type' );
	$this->targetObj = Title::newFromText( $request->getText( 'target' ) );

	# For reviewing deleted files...
	$this->archiveName = $request->getVal( 'file' );
	$this->token = $request->getVal( 'token' );
	if ( $this->archiveName && $this->targetObj ) {
	$this->tryShowFile( $this->archiveName );

	return;
	}

	$this->typeName = RevisionDeleter::getCanonicalTypeName( $this->typeName );

	# No targets?
	if ( !$this->typeName \|\| count( $this->ids ) == 0 ) {
	throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
	}

	$restriction = RevisionDeleter::getRestriction( $this->typeName );

	if ( !$this->getAuthority()->isAllowedAny( $restriction, 'deletedhistory' ) ) {
	throw new PermissionsError( $restriction );
	}

	# Allow the list type to adjust the passed target
	$this->targetObj = RevisionDeleter::suggestTarget(
	$this->typeName,
	$this->targetObj,
	$this->ids
	);

	# We need a target page!
	if ( $this->targetObj === null ) {
	$output->addWikiMsg( 'undelete-header' );

	return;
	}

	// Check blocks
	$checkReplica = !$this->submitClicked;
	if (
	$this->permissionManager->isBlockedFrom(
	$user,
	$this->targetObj,
	$checkReplica
	)
	) {
	throw new UserBlockedError(
	// @phan-suppress-next-line PhanTypeMismatchArgumentNullable Block is checked and not null
	$user->getBlock(),
	$user,
	$this->getLanguage(),
	$request->getIP()
	);
	}

	$this->typeLabels = self::UI_LABELS[$this->typeName];
	$list = $this->getList();
	$list->reset();
	$this->mIsAllowed = $this->permissionManager->userHasRight( $user, $restriction );
	$canViewSuppressedOnly = $this->permissionManager->userHasRight( $user, 'viewsuppressed' ) &&
	!$this->permissionManager->userHasRight( $user, 'suppressrevision' );
	$pageIsSuppressed = $list->areAnySuppressed();
	$this->mIsAllowed = $this->mIsAllowed && !( $canViewSuppressedOnly && $pageIsSuppressed );

	$this->otherReason = $request->getVal( 'wpReason', '' );
	# Give a link to the logs/hist for this page
	$this->showConvenienceLinks();

	# Initialise checkboxes
	$this->checks = [
	# Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name
	[ $this->typeLabels['check-label'], 'wpHidePrimary',
	RevisionDeleter::getRevdelConstant( $this->typeName )
	],
	[ 'revdelete-hide-comment', 'wpHideComment', RevisionRecord::DELETED_COMMENT ],
	[ 'revdelete-hide-user', 'wpHideUser', RevisionRecord::DELETED_USER ]
	];
	if ( $this->permissionManager->userHasRight( $user, 'suppressrevision' ) ) {
	$this->checks[] = [ 'revdelete-hide-restricted',
	'wpHideRestricted', RevisionRecord::DELETED_RESTRICTED ];
	}

	# Either submit or create our form
	if ( $this->mIsAllowed && $this->submitClicked ) {
	$this->submit();
	} else {
	$this->showForm();
	}

	if ( $this->permissionManager->userHasRight( $user, 'deletedhistory' ) ) {
	# Show relevant lines from the deletion log
	$deleteLogPage = new LogPage( 'delete' );
	$output->addHTML( "<h2>" . $deleteLogPage->getName()->escaped() . "</h2>\n" );
	LogEventsList::showLogExtract(
	$output,
	'delete',
	$this->targetObj,
	'', /* user */
	[ 'lim' => 25, 'conds' => $this->getLogQueryCond(), 'useMaster' => $this->wasSaved ]
	);
	}
	# Show relevant lines from the suppression log
	if ( $this->permissionManager->userHasRight( $user, 'suppressionlog' ) ) {
	$suppressLogPage = new LogPage( 'suppress' );
	$output->addHTML( "<h2>" . $suppressLogPage->getName()->escaped() . "</h2>\n" );
	LogEventsList::showLogExtract(
	$output,
	'suppress',
	$this->targetObj,
	'',
	[ 'lim' => 25, 'conds' => $this->getLogQueryCond(), 'useMaster' => $this->wasSaved ]
	);
	}
	}

	/**
	* Show some useful links in the subtitle
	*/
	protected function showConvenienceLinks() {
	$linkRenderer = $this->getLinkRenderer();
	# Give a link to the logs/hist for this page
	if ( $this->targetObj ) {
	// Also set header tabs to be for the target.
	$this->getSkin()->setRelevantTitle( $this->targetObj );

	$links = [];
	$links[] = $linkRenderer->makeKnownLink(
	SpecialPage::getTitleFor( 'Log' ),
	$this->msg( 'viewpagelogs' )->text(),
	[],
	[ 'page' => $this->targetObj->getPrefixedText() ]
	);
	if ( !$this->targetObj->isSpecialPage() ) {
	# Give a link to the page history
	$links[] = $linkRenderer->makeKnownLink(
	$this->targetObj,
	$this->msg( 'pagehist' )->text(),
	[],
	[ 'action' => 'history' ]
	);
	# Link to deleted edits
	if ( $this->permissionManager->userHasRight( $this->getUser(), 'undelete' ) ) {
	$undelete = SpecialPage::getTitleFor( 'Undelete' );
	$links[] = $linkRenderer->makeKnownLink(
	$undelete,
	$this->msg( 'deletedhist' )->text(),
	[],
	[ 'target' => $this->targetObj->getPrefixedDBkey() ]
	);
	}
	}
	# Logs themselves don't have histories or archived revisions
	$this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) );
	}
	}

	/**
	* Get the condition used for fetching log snippets
	* @return array
	*/
	protected function getLogQueryCond() {
	$conds = [];
	// Revision delete logs for these item
	$conds['log_type'] = [ 'delete', 'suppress' ];
	$conds['log_action'] = $this->getList()->getLogAction();
	$conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
	// Convert IDs to strings, since ls_value is a text field. This avoids
	// a fatal error in PostgreSQL: "operator does not exist: text = integer".
	$conds['ls_value'] = array_map( 'strval', $this->ids );

	return $conds;
	}

	/**
	* Show a deleted file version requested by the visitor.
	* @todo Mostly copied from Special:Undelete. Refactor.
	* @param string $archiveName
	*/
	protected function tryShowFile( $archiveName ) {
	$repo = $this->repoGroup->getLocalRepo();
	$oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
	$oimage->load();
	// Check if user is allowed to see this file
	if ( !$oimage->exists() ) {
	$this->getOutput()->addWikiMsg( 'revdelete-no-file' );

	return;
	}
	$user = $this->getUser();
	if ( !$oimage->userCan( File::DELETED_FILE, $user ) ) {
	if ( $oimage->isDeleted( File::DELETED_RESTRICTED ) ) {
	throw new PermissionsError( 'suppressrevision' );
	} else {
	throw new PermissionsError( 'deletedtext' );
	}
	}
	if ( !$user->matchEditToken( $this->token, $archiveName ) ) {
	$lang = $this->getLanguage();
	$this->getOutput()->addWikiMsg( 'revdelete-show-file-confirm',
	$this->targetObj->getText(),
	$lang->userDate( $oimage->getTimestamp(), $user ),
	$lang->userTime( $oimage->getTimestamp(), $user ) );
	$this->getOutput()->addHTML(
	Html::rawElement( 'form', [
	'method' => 'POST',
	'action' => $this->getPageTitle()->getLocalURL( [
	'target' => $this->targetObj->getPrefixedDBkey(),
	'file' => $archiveName,
	'token' => $user->getEditToken( $archiveName ),
	] )
	],
	Html::submitButton( $this->msg( 'revdelete-show-file-submit' )->text() )
	)
	);

	return;
	}
	$this->getOutput()->disable();
	# We mustn't allow the output to be CDN cached, otherwise
	# if an admin previews a deleted image, and it's cached, then
	# a user without appropriate permissions can toddle off and
	# nab the image, and CDN will serve it
	$this->getRequest()->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
	$this->getRequest()->response()->header(
	'Cache-Control: no-cache, no-store, max-age=0, must-revalidate'
	);

	$key = $oimage->getStorageKey();
	$path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
	$repo->streamFileWithStatus( $path );
	}

	/**
	* Get the list object for this request
	* @return RevDelList
	*/
	protected function getList() {
	if ( $this->revDelList === null ) {
	$this->revDelList = RevisionDeleter::createList(
	$this->typeName, $this->getContext(), $this->targetObj, $this->ids
	);
	}

	return $this->revDelList;
	}

	/**
	* Show a list of items that we will operate on, and show a form with checkboxes
	* which will allow the user to choose new visibility settings.
	*/
	protected function showForm() {
	$userAllowed = true;

	// Messages: revdelete-selected-text, revdelete-selected-file, logdelete-selected
	$out = $this->getOutput();
	$out->wrapWikiMsg( "<strong>$1</strong>", [ $this->typeLabels['selected'],
	$this->getLanguage()->formatNum( count( $this->ids ) ), $this->targetObj->getPrefixedText() ] );

	$this->addHelpLink( 'Help:RevisionDelete' );
	$out->addHTML( "<ul>" );

	$numRevisions = 0;
	// Live revisions...
	$list = $this->getList();
	for ( $list->reset(); $list->current(); $list->next() ) {
	$item = $list->current();

	if ( !$item->canView() ) {
	if ( !$this->submitClicked ) {
	throw new PermissionsError( 'suppressrevision' );
	}
	$userAllowed = false;
	}

	$numRevisions++;
	$out->addHTML( $item->getHTML() );
	}

	if ( !$numRevisions ) {
	throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
	}

	$out->addHTML( "</ul>" );
	// Explanation text
	$this->addUsageText();

	// Normal sysops can always see what they did, but can't always change it
	if ( !$userAllowed ) {
	return;
	}

	// Show form if the user can submit
	if ( $this->mIsAllowed ) {
	$suppressAllowed = $this->permissionManager
	->userHasRight( $this->getUser(), 'suppressrevision' );
	$out->addModules( [ 'mediawiki.misc-authed-ooui' ] );
	$out->addModuleStyles( [ 'mediawiki.special',
	'mediawiki.interface.helpers.styles' ] );

	$dropdownReason = $this->msg( 'revdelete-reason-dropdown' )
	->page( $this->targetObj )->inContentLanguage()->text();
	// Add additional specific reasons for suppress
	if ( $suppressAllowed ) {
	$dropdownReason .= "\n" . $this->msg( 'revdelete-reason-dropdown-suppress' )
	->page( $this->targetObj )->inContentLanguage()->text();
	}

	$fields = $this->buildCheckBoxes();

	$fields[] = [
	'type' => 'select',
	'label' => $this->msg( 'revdelete-log' )->text(),
	'cssclass' => 'wpReasonDropDown',
	'id' => 'wpRevDeleteReasonList',
	'name' => 'wpRevDeleteReasonList',
	'options' => Html::listDropdownOptions(
	$dropdownReason,
	[ 'other' => $this->msg( 'revdelete-reasonotherlist' )->text() ]
	),
	'default' => $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' )
	];

	$fields[] = [
	'type' => 'text',
	'label' => $this->msg( 'revdelete-otherreason' )->text(),
	'name' => 'wpReason',
	'id' => 'wpReason',
	// HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
	// (e.g. emojis) count for two each. This limit is overridden in JS to instead count
	// Unicode codepoints.
	// "- 155" is to leave room for the 'wpRevDeleteReasonList' value.
	'maxlength' => CommentStore::COMMENT_CHARACTER_LIMIT - 155,
	];

	$fields[] = [
	'type' => 'hidden',
	'name' => 'wpEditToken',
	'default' => $this->getUser()->getEditToken()
	];

	$fields[] = [
	'type' => 'hidden',
	'name' => 'target',
	'default' => $this->targetObj->getPrefixedText()
	];

	$fields[] = [
	'type' => 'hidden',
	'name' => 'type',
	'default' => $this->typeName
	];

	$fields[] = [
	'type' => 'hidden',
	'name' => 'ids',
	'default' => implode( ',', $this->ids )
	];

	$htmlForm = HTMLForm::factory( 'ooui', $fields, $this->getContext() );
	$htmlForm
	->setSubmitText( $this->msg( 'revdelete-submit', $numRevisions )->text() )
	->setSubmitName( 'wpSubmit' )
	->setWrapperLegend( $this->msg( 'revdelete-legend' )->text() )
	->setAction( $this->getPageTitle()->getLocalURL( [ 'action' => 'submit' ] ) )
	->loadData();
	// Show link to edit the dropdown reasons
	if ( $this->permissionManager->userHasRight( $this->getUser(), 'editinterface' ) ) {
	$link = '';
	$linkRenderer = $this->getLinkRenderer();
	if ( $suppressAllowed ) {
	$link .= $linkRenderer->makeKnownLink(
	$this->msg( 'revdelete-reason-dropdown-suppress' )->inContentLanguage()->getTitle(),
	$this->msg( 'revdelete-edit-reasonlist-suppress' )->text(),
	[],
	[ 'action' => 'edit' ]
	);
	$link .= $this->msg( 'pipe-separator' )->escaped();
	}
	$link .= $linkRenderer->makeKnownLink(
	$this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->getTitle(),
	$this->msg( 'revdelete-edit-reasonlist' )->text(),
	[],
	[ 'action' => 'edit' ]
	);
	$htmlForm->setPostHtml( Html::rawElement( 'p', [ 'class' => 'mw-revdel-editreasons' ], $link ) );
	}
	$out->addHTML( $htmlForm->getHTML( false ) );
	}
	}

	/**
	* Show some introductory text
	* @todo FIXME: Wikimedia-specific policy text
	*/
	protected function addUsageText() {
	// Messages: revdelete-text-text, revdelete-text-file, logdelete-text
	$this->getOutput()->wrapWikiMsg(
	"<strong>$1</strong>\n$2", $this->typeLabels['text'],
	'revdelete-text-others'
	);

	if ( $this->permissionManager->userHasRight( $this->getUser(), 'suppressrevision' ) ) {
	$this->getOutput()->addWikiMsg( 'revdelete-suppress-text' );
	}

	if ( $this->mIsAllowed ) {
	$this->getOutput()->addWikiMsg( 'revdelete-confirm' );
	}
	}

	/**
	* @return array $fields
	*/
	protected function buildCheckBoxes() {
	$fields = [];

	$type = 'radio';

	$list = $this->getList();

	// If there is just one item, use checkboxes
	if ( $list->length() == 1 ) {
	$list->reset();

	$type = 'check';
	}

	foreach ( $this->checks as $item ) {
	// Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name,
	// revdelete-hide-comment, revdelete-hide-user, revdelete-hide-restricted
	[ $message, $name, $bitField ] = $item;

	$field = [
	'type' => $type,
	'label-raw' => $this->msg( $message )->escaped(),
	'id' => $name,
	'flatlist' => true,
	'name' => $name,
	'default' => $list->length() == 1 ? $list->current()->getBits() & $bitField : null
	];

	if ( $bitField == RevisionRecord::DELETED_RESTRICTED ) {
	$field['label-raw'] = "<b>" . $field['label-raw'] . "</b>";
	if ( $type === 'radio' ) {
	$field['options-messages'] = [
	'revdelete-radio-same' => -1,
	'revdelete-radio-unset-suppress' => 0,
	'revdelete-radio-set-suppress' => 1
	];
	}
	} elseif ( $type === 'radio' ) {
	$field['options-messages'] = [
	'revdelete-radio-same' => -1,
	'revdelete-radio-unset' => 0,
	'revdelete-radio-set' => 1
	];
	}

	$fields[] = $field;
	}

	return $fields;
	}

	/**
	* UI entry point for form submission.
	* @throws PermissionsError
	* @return bool
	*/
	protected function submit() {
	# Check edit token on submission
	$token = $this->getRequest()->getVal( 'wpEditToken' );
	if ( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) {
	$this->getOutput()->addWikiMsg( 'sessionfailure' );

	return false;
	}
	$bitParams = $this->extractBitParams();
	// from dropdown
	$listReason = $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' );
	$comment = $listReason;
	if ( $comment === 'other' ) {
	$comment = $this->otherReason;
	} elseif ( $this->otherReason !== '' ) {
	// Entry from drop down menu + additional comment
	$comment .= $this->msg( 'colon-separator' )->inContentLanguage()->text()
	. $this->otherReason;
	}
	# Can the user set this field?
	if ( $bitParams[RevisionRecord::DELETED_RESTRICTED] == 1
	&& !$this->permissionManager->userHasRight( $this->getUser(), 'suppressrevision' )
	) {
	throw new PermissionsError( 'suppressrevision' );
	}
	# If the save went through, go to success message...
	$status = $this->save( $bitParams, $comment );
	if ( $status->isGood() ) {
	$this->success();

	return true;
	} else {
	# ...otherwise, bounce back to form...
	$this->failure( $status );
	}

	return false;
	}

	/**
	* Report that the submit operation succeeded
	*/
	protected function success() {
	// Messages: revdelete-success, logdelete-success
	$out = $this->getOutput();
	$out->setPageTitleMsg( $this->msg( 'actioncomplete' ) );
	$out->addHTML(
	Html::successBox(
	$out->msg( $this->typeLabels['success'] )->parse()
	)
	);
	$this->wasSaved = true;
	$this->revDelList->reloadFromPrimary();
	$this->showForm();
	}

	/**
	* Report that the submit operation failed
	* @param Status $status
	*/
	protected function failure( $status ) {
	// Messages: revdelete-failure, logdelete-failure
	$out = $this->getOutput();
	$out->setPageTitleMsg( $this->msg( 'actionfailed' ) );
	$out->addModuleStyles( 'mediawiki.codex.messagebox.styles' );
	$out->addHTML(
	Html::errorBox(
	$out->parseAsContent(
	$status->getWikiText( $this->typeLabels['failure'], false, $this->getLanguage() )
	)
	)
	);
	$this->showForm();
	}

	/**
	* Put together an array that contains -1, 0, or the *_deleted const for each bit
	*
	* @return array
	*/
	protected function extractBitParams() {
	$bitfield = [];
	foreach ( $this->checks as [ /* message */, $name, $field ] ) {
	$val = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
	if ( $val < -1 \|\| $val > 1 ) {
	$val = -1; // -1 for existing value
	}
	$bitfield[$field] = $val;
	}
	if ( !isset( $bitfield[RevisionRecord::DELETED_RESTRICTED] ) ) {
	$bitfield[RevisionRecord::DELETED_RESTRICTED] = 0;
	}

	return $bitfield;
	}

	/**
	* Do the write operations. Simple wrapper for RevDel*List::setVisibility().
	* @param array $bitPars ExtractBitParams() bitfield array
	* @param string $reason
	* @return Status
	*/
	protected function save( array $bitPars, $reason ) {
	return $this->getList()->setVisibility(
	[ 'value' => $bitPars, 'comment' => $reason ]
	);
	}

	protected function getGroupName() {
	return 'pagetools';
	}
	}

	/**
	* Retain the old class name for backwards compatibility.
	* @deprecated since 1.41
	*/
	class_alias( SpecialRevisionDelete::class, 'SpecialRevisionDelete' );

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