SpecialGlobalGroupPermissions.php
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SpecialGlobalGroupPermissions.php
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	<?php
	# This file is part of MediaWiki.

	# MediaWiki is free software: you can redistribute it and/or modify
	# it under the terms of version 2 of the GNU General Public License
	# as published by the Free Software Foundation.

	# MediaWiki 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.

	namespace MediaWiki\Extension\CentralAuth\Special;

	use Exception;
	use InvalidArgumentException;
	use LogEventsList;
	use LogPage;
	use ManualLogEntry;
	use MediaWiki\Extension\CentralAuth\CentralAuthDatabaseManager;
	use MediaWiki\Extension\CentralAuth\GlobalGroup\GlobalGroupLookup;
	use MediaWiki\Extension\CentralAuth\User\CentralAuthUser;
	use MediaWiki\Extension\CentralAuth\WikiSet;
	use MediaWiki\Html\Html;
	use MediaWiki\Output\OutputPage;
	use MediaWiki\Permissions\PermissionManager;
	use MediaWiki\SpecialPage\SpecialPage;
	use MediaWiki\Status\Status;
	use MediaWiki\Title\Title;
	use MediaWiki\User\User;
	use MediaWiki\User\UserGroupMembership;
	use MediaWiki\Xml\Xml;
	use MediaWiki\Xml\XmlSelect;

	/**
	* Special page to allow managing global groups
	* Prototype for a similar system in core.
	*
	* @file
	* @ingroup Extensions
	*/

	class SpecialGlobalGroupPermissions extends SpecialPage {

	private PermissionManager $permissionManager;
	private CentralAuthDatabaseManager $databaseManager;
	private GlobalGroupLookup $globalGroupLookup;

	public function __construct(
	PermissionManager $permissionManager,
	CentralAuthDatabaseManager $databaseManager,
	GlobalGroupLookup $globalGroupLookup
	) {
	parent::__construct( 'GlobalGroupPermissions' );
	$this->permissionManager = $permissionManager;
	$this->databaseManager = $databaseManager;
	$this->globalGroupLookup = $globalGroupLookup;
	}

	public function doesWrites() {
	return true;
	}

	/**
	* @param User $user
	* @return bool
	*/
	public function userCanEdit( $user ) {
	$globalUser = CentralAuthUser::getInstance( $user );

	# Should be a global user
	if ( !$globalUser->exists() \|\| !$globalUser->isAttached() ) {
	return false;
	}

	return $user->isAllowed( 'globalgrouppermissions' );
	}

	/** @inheritDoc */
	public function execute( $subpage ) {
	$this->addHelpLink( 'Extension:CentralAuth' );
	if ( !$this->userCanExecute( $this->getUser() ) ) {
	$this->displayRestrictionError();
	}

	$this->getOutput()->setPageTitleMsg( $this->msg( 'globalgrouppermissions' ) );

	$this->getOutput()->addModuleStyles( 'ext.centralauth.misc.styles' );
	$this->getOutput()->setRobotPolicy( "noindex,nofollow" );
	$this->getOutput()->setArticleRelated( false );
	$this->getOutput()->disableClientCache();

	if ( $subpage == '' ) {
	$subpage = $this->getRequest()->getVal( 'wpGroup' );
	}

	if (
	$subpage != ''
	&& $this->getUser()->matchEditToken( $this->getRequest()->getVal( 'wpEditToken' ) )
	&& $this->getRequest()->wasPosted()
	) {
	$this->doSubmit( $subpage );
	} elseif ( $subpage != '' ) {
	$this->buildGroupView( $subpage );
	} else {
	$this->buildMainView();
	}
	}

	private function buildMainView() {
	$out = $this->getOutput();
	$groups = $this->globalGroupLookup->getDefinedGroups();

	if ( count( $groups ) ) {
	$out->addHTML(
	$this->msg( 'centralauth-globalgroupperms-groups-intro' )->parseAsBlock()
	. $this->getGlobalGroupsTable( $groups )
	);
	} else {
	$out->addWikiMsg( 'centralauth-globalgroupperms-nogroups' );
	}

	if ( $this->userCanEdit( $this->getUser() ) ) {
	// "Create a group" prompt
	// @todo Move this out of main view to a separate page
	$html = Xml::fieldset( $this->msg( 'centralauth-newgroup-legend' )->text() );
	$html .= $this->msg( 'centralauth-newgroup-intro' )->parseAsBlock();
	$html .= Xml::openElement( 'form', [
	'method' => 'post',
	'action' => $this->getConfig()->get( 'Script' ),
	'name' => 'centralauth-globalgroups-newgroup'
	] );
	$html .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );

	$fields = [ 'centralauth-globalgroupperms-newgroupname' => Xml::input( 'wpGroup' ) ];

	$html .= Xml::buildForm( $fields, 'centralauth-globalgroupperms-creategroup-submit' );
	$html .= Xml::closeElement( 'form' );
	$html .= Xml::closeElement( 'fieldset' );

	$out->addHTML( $html );
	}
	}

	/**
	* @param array $groups
	* @return string HTML for the group permissions table
	*/
	protected function getGlobalGroupsTable( $groups ) {
	$table = Html::openElement( 'table',
	[ 'class' => 'mw-centralauth-groups-table wikitable' ] );

	// Header stuff
	$table .= Html::openElement( 'tr' );
	$table .= Html::element( 'th', [],
	$this->msg( 'centralauth-globalgroupperms-group' )->text()
	);
	$table .= Html::element( 'th', [],
	$this->msg( 'centralauth-globalgroupperms-rights' )->text()
	);
	$table .= Html::closeElement( 'tr' );

	foreach ( $groups as $groupName ) {
	$groupInfo = $this->getGroupInfo( $groupName );
	$wikiset = $groupInfo['wikiset'];

	$table .= Html::openElement( 'tr' );

	// Column with group name, links and local disabled status
	$table .= Html::openElement( 'td' );
	$table .= $this->getOutput()->parseInlineAsInterface(
	UserGroupMembership::getLinkWiki( $groupName, $this->getContext() ) ) . '<br />';

	$groupWithParentheses = $this->msg( 'parentheses' )->params( $groupName )->escaped();
	$table .= Html::openElement( 'code' );
	$table .= $groupWithParentheses;
	$table .= Html::closeElement( 'code' ) . Html::element( 'br' );

	$linkRenderer = $this->getLinkRenderer();
	$links = [
	$linkRenderer->makeKnownLink(
	$this->getPageTitle( $groupName ),
	$this->msg( 'centralauth-globalgroupperms-management' )->text()
	),
	$linkRenderer->makeKnownLink(
	SpecialPage::getTitleFor( 'GlobalUsers', $groupName ),
	$this->msg( 'centralauth-globalgroupperms-group-listmembers' )->text()
	),
	];
	$table .= $this->msg( 'parentheses' )
	->rawParams( $this->getLanguage()->pipeList( $links ) )->escaped();

	if ( $wikiset !== null && !$wikiset['enabledHere'] ) {
	$table .= '<br /><small>';
	$table .= $this->msg( 'centralauth-globalgroupperms-group-disabled' )->escaped() .
	'</small>';
	}
	$table .= Html::closeElement( 'td' );

	// Column for wikiset info and group rights list
	$table .= Html::openElement( 'td' );
	if ( $wikiset === null ) {
	$table .= $this->msg( 'centralauth-globalgroupperms-wikiset-none' )->escaped();
	} else {
	$table .= $this->msg( 'centralauth-globalgroupperms-group-wikiset' )
	->rawParams(
	$linkRenderer->makeKnownLink(
	SpecialPage::getTitleFor( 'WikiSets', $wikiset['id'] ),
	$wikiset['name']
	)
	)->escaped();
	}

	$table .= '<hr />';

	$rightsList = '';
	foreach ( $groupInfo['rights'] as $right ) {
	$rightsList .= Html::rawElement( 'li', [], $this->formatRight( $right ) );
	}
	$table .= '<ul>' . $rightsList . '</ul>';
	$table .= Html::closeElement( 'td' );

	$table .= Html::closeElement( 'tr' );
	}

	$table .= Html::closeElement( 'table' );

	return $table;
	}

	/**
	* @param string $group The group's name
	* @return array
	* - rights: string The list of rights assigned to the group
	* - wikiset: array\|null Either array with id, name, enabledHere or
	* null if the group is not associated to any wikiset
	* @throws Exception
	*/
	protected function getGroupInfo( $group ) {
	$info = [ 'rights' => $this->getAssignedRights( $group ) ];

	$wikiset = WikiSet::getWikiSetForGroup( $group );
	if ( $wikiset !== 0 ) {
	$wikiset = WikiSet::newFromID( $wikiset );
	if ( !$wikiset ) {
	throw new InvalidArgumentException( "__METHOD__: $group with unknown wikiset." );
	}
	$info['wikiset'] = [
	'id' => $wikiset->getId(),
	'name' => $wikiset->getName(),
	'enabledHere' => $wikiset->inSet(),
	];
	} else {
	$info['wikiset'] = null;
	}

	return $info;
	}

	/**
	* @param string $group
	*/
	private function buildGroupView( $group ) {
	$editable = $this->userCanEdit( $this->getUser() );
	$assignedRights = $this->getAssignedRights( $group );
	$this->getOutput()->addBacklinkSubtitle( $this->getPageTitle() );

	if ( !$assignedRights ) {
	// if the group doesn't exist and the user can not manage the global groups,
	// an error message should be shown instead of the permission list box.
	if ( !$editable ) {
	$this->getOutput()->wrapWikiMsg( '<div class="error">$1</div>',
	[ 'centralauth-editgroup-nonexistent', $group ] );
	$this->showLogFragment( $group, $this->getOutput() );
	return;
	}

	$nameValidationResult = $this->validateGroupName( $group );
	if ( !$nameValidationResult->isGood() ) {
	$this->getOutput()->wrapWikiMsg( '<div class="error">$1</div>',
	$nameValidationResult->getMessage() );
	$this->showLogFragment( $group, $this->getOutput() );
	return;
	}
	}

	$fieldsetClass = $editable
	? 'mw-centralauth-editgroup'
	: 'mw-centralauth-editgroup-readonly';
	$html = Xml::fieldset(
	$this->msg( 'centralauth-editgroup-fieldset', $group )->text(),
	false,
	[ 'class' => $fieldsetClass ]
	);

	if ( $editable ) {
	$html .= Xml::openElement( 'form', [
	'method' => 'post',
	'action' => $this->getPageTitle( $group )->getLocalUrl(),
	'name' => 'centralauth-globalgroups-newgroup'
	] );
	$html .= Html::hidden( 'wpGroup', $group );
	$html .= Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() );
	}

	$fields = [];

	if ( $editable ) {
	$fields['centralauth-editgroup-name'] = Xml::input( 'wpGlobalGroupName', 50, $group );
	} else {
	$fields['centralauth-editgroup-name'] = htmlspecialchars( $group );
	}

	$lang = $this->getLanguage();
	if ( $this->getContext()->getAuthority()->isAllowed( 'editinterface' ) ) {
	# Show edit link only to user with the editinterface right
	$fields['centralauth-editgroup-display'] = $this->msg(
	'centralauth-editgroup-display-edit',
	$group,
	$lang->getGroupName( $group )
	)->parse();
	$fields['centralauth-editgroup-member'] = $this->msg(
	'centralauth-editgroup-member-edit',
	$group,
	$lang->getGroupMemberName( $group, '#' )
	)->parse();
	} else {
	$fields['centralauth-editgroup-display'] =
	htmlspecialchars( $lang->getGroupName( $group ) );
	$fields['centralauth-editgroup-member'] =
	htmlspecialchars( $lang->getGroupMemberName( $group, '#' ) );
	}
	$fields['centralauth-editgroup-members'] = $this->msg(
	'centralauth-editgroup-members-link',
	$group,
	$lang->getGroupMemberName( $group, '#' )
	)->parse();
	$fields['centralauth-editgroup-restrictions'] = $this->buildWikiSetSelector( $group );
	$fields['centralauth-editgroup-perms'] = $this->buildCheckboxes( $group );

	if ( $editable ) {
	$fields['centralauth-editgroup-reason'] = Xml::input( 'wpReason', 60 );
	}

	$html .= Xml::buildForm( $fields, $editable ? 'centralauth-editgroup-submit' : null );

	if ( $editable ) {
	$html .= Xml::closeElement( 'form' );
	}

	$html .= Xml::closeElement( 'fieldset' );

	$this->getOutput()->addHTML( $html );

	$this->showLogFragment( $group, $this->getOutput() );
	}

	/**
	* @param string $group
	* @return string
	*/
	private function buildWikiSetSelector( $group ) {
	$sets = WikiSet::getAllWikiSets();
	$default = WikiSet::getWikiSetForGroup( $group );

	if ( !$this->userCanEdit( $this->getUser() ) ) {
	$set = WikiSet::newFromID( $default );
	if ( $set ) {
	return $this->getLinkRenderer()->makeLink(
	SpecialPage::getTitleFor( 'WikiSets', (string)$set->getId() ),
	$set->getName()
	);
	} else {
	return $this->msg( 'centralauth-editgroup-nowikiset' )->parse();
	}
	}

	$select = new XmlSelect( 'set', 'wikiset', (string)$default );
	$select->addOption( $this->msg( 'centralauth-editgroup-noset' )->text(), '0' );
	foreach ( $sets as $set ) {
	$select->addOption( $set->getName(), (string)$set->getID() );
	}

	$editlink = $this->msg( 'centralauth-editgroup-editsets' )->parse();
	return $select->getHTML() . " {$editlink}";
	}

	/**
	* @param string $group
	* @return string
	*/
	private function buildCheckboxes( $group ) {
	$editable = $this->userCanEdit( $this->getUser() );

	$assignedRights = $this->getAssignedRights( $group );

	$checkboxes = [];
	$attribs = [];

	if ( !$editable ) {
	$attribs['disabled'] = 'disabled';
	}

	$rights = array_unique(
	array_merge(
	$this->permissionManager->getAllPermissions(),
	$assignedRights
	)
	);
	sort( $rights );

	foreach ( $rights as $right ) {
	// Build a checkbox
	$checked = in_array( $right, $assignedRights );

	$desc = $this->formatRight( $right );

	$checkbox = Xml::check( "wpRightAssigned-$right", $checked,
	array_merge( $attribs, [ 'id' => "wpRightAssigned-$right" ] ) );
	$label = Xml::tags( 'label', [ 'for' => "wpRightAssigned-$right" ],
	$desc );

	$liClass = $checked
	? 'mw-centralauth-editgroup-checked'
	: 'mw-centralauth-editgroup-unchecked';
	$checkboxes[] = Html::rawElement(
	'li', [ 'class' => $liClass ], "$checkbox $label" );
	}

	$count = count( $checkboxes );

	$html = Html::openElement( 'div', [ 'class' => 'mw-centralauth-rights' ] )
	. '<ul>';

	foreach ( $checkboxes as $cb ) {
	$html .= $cb;
	}

	$html .= '</ul>'
	. Html::closeElement( 'div' );

	return $html;
	}

	/**
	* Given a user right name, return HTML with the description
	* of the right and it's name for displaying to the user
	* @param string $right
	* @return string escaped html
	*/
	protected function formatRight( $right ) {
	return $this->msg( 'listgrouprights-right-display' )
	->params( User::getRightDescription( $right ) )
	->rawParams( Html::element(
	'span',
	[ 'class' => 'mw-listgrouprights-right-name' ],
	$right
	) )
	->parse();
	}

	/**
	* @param string $group
	* @return string[]
	*/
	private function getAssignedRights( $group ) {
	return $this->globalGroupLookup->getRightsForGroup( $group );
	}

	/**
	* @param string $group
	*/
	private function doSubmit( $group ) {
	// It is important to check userCanEdit, as otherwise an
	// unauthorized user could manually construct a POST request.
	if ( !$this->userCanEdit( $this->getUser() ) ) {
	return;
	}
	$reason = $this->getRequest()->getVal( 'wpReason', '' );

	// Current name of the group
	// XXX This is a horrible hack. We should not use Title for normalization. We need to prefix
	// the group name so that the first letter doesn't get uppercased.
	$group = Title::newFromText( "A/$group" );
	if ( !$group ) {
	$this->getOutput()->addWikiMsg( 'centralauth-editgroup-invalid-name' );
	return;
	}
	$group = ltrim( substr( $group->getDBkey(), 2 ), '_' );

	// (Potentially) New name of the group
	$newname = $this->getRequest()->getVal( 'wpGlobalGroupName', $group );

	$newname = Title::newFromText( "A/$newname" );
	if ( !$newname ) {
	$this->getOutput()->addWikiMsg( 'centralauth-editgroup-invalid-name' );
	return;
	}
	$newname = ltrim( substr( $newname->getDBkey(), 2 ), '_' );

	// all new group names should be lowercase: check all new and changed group names (T202095)
	if (
	!in_array( $group, $this->globalGroupLookup->getDefinedGroups( DB_PRIMARY ) )
	\|\| ( $group !== $newname )
	) {
	$nameValidationResult = $this->validateGroupName( $newname );
	if ( !$nameValidationResult->isGood() ) {
	$this->getOutput()->wrapWikiMsg( '<div class="error">$1</div>',
	$nameValidationResult->getMessage() );
	return;
	}
	}

	// Calculate permission changes already! We'll only save any changes
	// here after processing a possible group rename, but want to add
	// validation logic before that.
	$addRights = [];
	$removeRights = [];
	$oldRights = $this->getAssignedRights( $group );
	$allRights = array_unique(
	array_merge(
	$this->permissionManager->getAllPermissions(),
	$oldRights
	)
	);

	foreach ( $allRights as $right ) {
	$alreadyAssigned = in_array( $right, $oldRights );
	$checked = $this->getRequest()->getCheck( "wpRightAssigned-$right" );

	if ( !$alreadyAssigned && $checked ) {
	$addRights[] = $right;
	} elseif ( $alreadyAssigned && !$checked ) {
	$removeRights[] = $right;
	}
	}

	// Disallow deleting existing groups with members in them
	if (
	count( $oldRights ) !== 0
	&& count( $addRights ) === 0
	&& count( $removeRights ) === count( $oldRights )
	) {
	$dbr = $this->databaseManager->getCentralReplicaDB();
	$memberCount = $dbr->newSelectQueryBuilder()
	->select( 'gug_group' )
	->from( 'global_user_groups' )
	->where( [ 'gug_group' => $group ] )
	->caller( __METHOD__ )
	->fetchRow();

	if ( $memberCount ) {
	$this->getOutput()->addWikiMsg( 'centralauth-editgroup-delete-removemembers' );
	return;
	}
	}

	// Check if we need to rename the group
	if ( $group != $newname ) {
	if ( in_array( $newname, $this->globalGroupLookup->getDefinedGroups( DB_PRIMARY ) ) ) {
	$this->getOutput()->addWikiMsg( 'centralauth-editgroup-rename-taken', $newname );
	return;
	}

	$dbw = $this->databaseManager->getCentralPrimaryDB();
	$updates = [
	'global_group_permissions' => 'ggp_group',
	'global_group_restrictions' => 'ggr_group',
	'global_user_groups' => 'gug_group'
	];

	foreach ( $updates as $table => $field ) {
	$dbw->newUpdateQueryBuilder()
	->update( $table )
	->set( [ $field => $newname ] )
	->where( [ $field => $group ] )
	->caller( __METHOD__ )
	->execute();
	}
	$this->addRenameLog( $group, $newname, $reason );

	// The rest of the changes here will be performed on the "new" group
	$group = $newname;
	}

	// Assign the rights.
	if ( count( $addRights ) > 0 ) {
	$this->grantRightsToGroup( $group, $addRights );
	}
	if ( count( $removeRights ) > 0 ) {
	$this->revokeRightsFromGroup( $group, $removeRights );
	}

	// Log it
	if ( !( count( $addRights ) == 0 && count( $removeRights ) == 0 ) ) {
	$this->addPermissionLog( $group, $addRights, $removeRights, $reason );
	}

	// Change set
	$current = WikiSet::getWikiSetForGroup( $group );
	$new = $this->getRequest()->getInt( 'set' );
	if ( $current != $new ) {
	$this->setRestrictions( $group, $new );
	$this->addWikiSetLog( $group, $current, $new, $reason );
	}

	$this->invalidateRightsCache( $group );

	// Display success
	$this->getOutput()->setSubTitle( $this->msg( 'centralauth-editgroup-success' ) );
	$this->getOutput()->addWikiMsg( 'centralauth-editgroup-success-text', $group );
	}

	/**
	* @param string $group
	* @param string[] $rights
	*/
	private function revokeRightsFromGroup( $group, $rights ) {
	$dbw = $this->databaseManager->getCentralPrimaryDB();

	# Delete from the DB
	$dbw->newDeleteQueryBuilder()
	->deleteFrom( 'global_group_permissions' )
	->where( [ 'ggp_group' => $group, 'ggp_permission' => $rights ] )
	->caller( __METHOD__ )
	->execute();
	}

	/**
	* @param string $group
	* @param string[]\|string $rights
	*/
	private function grantRightsToGroup( $group, $rights ) {
	$dbw = $this->databaseManager->getCentralPrimaryDB();

	if ( !is_array( $rights ) ) {
	$rights = [ $rights ];
	}

	$insertRows = [];
	foreach ( $rights as $right ) {
	$insertRows[] = [ 'ggp_group' => $group, 'ggp_permission' => $right ];
	}

	# Replace into the DB
	$dbw->newReplaceQueryBuilder()
	->replaceInto( 'global_group_permissions' )
	->uniqueIndexFields( [ 'ggp_group', 'ggp_permission' ] )
	->rows( $insertRows )
	->caller( __METHOD__ )
	->execute();
	}

	/**
	* @param string $group
	* @param OutputPage $output
	*/
	protected function showLogFragment( $group, $output ) {
	$title = SpecialPage::getTitleFor( 'GlobalUsers', $group );
	$logPage = new LogPage( 'gblrights' );
	$output->addHTML( Xml::element( 'h2', null, $logPage->getName()->text() . "\n" ) );
	LogEventsList::showLogExtract( $output, 'gblrights', $title->getPrefixedText() );
	}

	/**
	* Log permission changes
	*
	* @param string $group
	* @param string[] $addRights
	* @param string[] $removeRights
	* @param string $reason
	*/
	private function addPermissionLog( $group, $addRights, $removeRights, $reason ) {
	$entry = new ManualLogEntry( 'gblrights', 'groupprms2' );
	$entry->setTarget( SpecialPage::getTitleFor( 'GlobalUsers', $group ) );
	$entry->setPerformer( $this->getUser() );
	$entry->setComment( $reason );
	$entry->setParameters( [
	'addRights' => $addRights,
	'removeRights' => $removeRights,
	] );
	$logid = $entry->insert();
	$entry->publish( $logid );
	}

	/**
	* Log the renaming of a global group
	*
	* @param string $oldName
	* @param string $newName
	* @param string $reason
	*/
	private function addRenameLog( $oldName, $newName, $reason ) {
	$entry = new ManualLogEntry( 'gblrights', 'grouprename' );
	// This has to point to 'Special:GlobalUsers so that self::showLogFragment can find it
	$entry->setTarget( SpecialPage::getTitleFor( 'GlobalUsers', $newName ) );
	$entry->setPerformer( $this->getUser() );
	$entry->setComment( $reason );
	$entry->setParameters( [
	'newName' => $newName,
	'oldName' => $oldName,
	] );
	$logid = $entry->insert();
	$entry->publish( $logid );
	}

	/**
	* Log wikiset changes
	*
	* @param string $group
	* @param int $old
	* @param int $new
	* @param string $reason
	*/
	private function addWikiSetLog( $group, $old, $new, $reason ) {
	$entry = new ManualLogEntry( 'gblrights', 'groupprms3' );
	$entry->setTarget( SpecialPage::getTitleFor( 'GlobalUsers', $group ) );
	$entry->setPerformer( $this->getUser() );
	$entry->setComment( $reason );
	$params = [];
	$mapping = [
	'old' => [ 4, $old ],
	'new' => [ 5, $new ],
	];
	foreach ( $mapping as $param => [ $id, $set ] ) {
	$name = $this->getWikiSetName( $set );
	if ( $name !== null ) {
	$params["$id::$param"] = $name;
	} else {
	$params["$id:msg:$param"] = 'centralauth-editgroup-noset';
	}
	}
	$entry->setParameters( $params );
	$logid = $entry->insert();
	$entry->publish( $logid );
	}

	/**
	* @param string $group
	* @param int $set
	* @return bool
	*/
	private function setRestrictions( $group, $set ) {
	$dbw = $this->databaseManager->getCentralPrimaryDB();
	if ( $set == 0 ) {
	$dbw->newDeleteQueryBuilder()
	->deleteFrom( 'global_group_restrictions' )
	->where( [ 'ggr_group' => $group ] )
	->caller( __METHOD__ )
	->execute();
	} else {
	$dbw->newReplaceQueryBuilder()
	->replaceInto( 'global_group_restrictions' )
	->uniqueIndexFields( 'ggr_group' )
	->row( [ 'ggr_group' => $group, 'ggr_set' => $set, ] )
	->caller( __METHOD__ )
	->execute();
	}
	return (bool)$dbw->affectedRows();
	}

	/**
	* @param string\|int $id
	* @return string\|null
	*/
	private function getWikiSetName( $id ) {
	$wikiset = WikiSet::newFromID( $id );
	if ( $wikiset !== null ) {
	return $wikiset->getName();
	}
	return null;
	}

	/**
	* @param string $group
	*/
	private function invalidateRightsCache( $group ) {
	// Figure out all the users in this group.
	// Use the primary database over here as this could go horribly wrong with newly created or just
	// renamed groups
	$dbr = $this->databaseManager->getCentralPrimaryDB();

	$res = $dbr->newSelectQueryBuilder()
	->select( 'gu_name' )
	->from( 'globaluser' )
	->join( 'global_user_groups', null, 'gu_id=gug_user' )
	->where( [ 'gug_group' => $group ] )
	->caller( __METHOD__ )
	->fetchFieldValues();

	// Invalidate their rights cache.
	foreach ( $res as $name ) {
	// Use READ_LATEST for paranoia, though the DB isn't used in this method
	$cu = CentralAuthUser::getPrimaryInstanceByName( $name );
	$cu->quickInvalidateCache();
	}
	}

	/** @inheritDoc */
	protected function getGroupName() {
	return 'users';
	}

	private function validateGroupName( string $name ): Status {
	// all new group names should be lowercase (T202095)
	if ( $name !== strtolower( $name ) ) {
	return Status::newFatal( 'centralauth-editgroup-invalid-name-lowercase' );
	}

	return Status::newGood();
	}
	}

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