SpecialRenameUser.php

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<?php
 
namespace MediaWiki\Specials;
 
use Language;
use MediaWiki\CommentStore\CommentStore;
use MediaWiki\Html\Html;
use MediaWiki\HTMLForm\HTMLForm;
use MediaWiki\Page\MovePageFactory;
use MediaWiki\Permissions\PermissionManager;
use MediaWiki\RenameUser\RenameuserSQL;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\Status\Status;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleFactory;
use MediaWiki\User\UserFactory;
use MediaWiki\User\UserNamePrefixSearch;
use MediaWiki\User\UserNameUtils;
use UserBlockedError;
use Wikimedia\Rdbms\IConnectionProvider;
 
class SpecialRenameUser extends SpecialPage {
    private IConnectionProvider $dbConns;
    private Language $contentLanguage;
    private MovePageFactory $movePageFactory;
    private PermissionManager $permissionManager;
    private TitleFactory $titleFactory;
    private UserFactory $userFactory;
    private UserNamePrefixSearch $userNamePrefixSearch;
    private UserNameUtils $userNameUtils;
 
    public function __construct(
        IConnectionProvider $dbConns,
        Language $contentLanguage,
        MovePageFactory $movePageFactory,
        PermissionManager $permissionManager,
        TitleFactory $titleFactory,
        UserFactory $userFactory,
        UserNamePrefixSearch $userNamePrefixSearch,
        UserNameUtils $userNameUtils
    ) {
        parent::__construct( 'Renameuser', 'renameuser' );
 
        $this->dbConns = $dbConns;
        $this->contentLanguage = $contentLanguage;
        $this->movePageFactory = $movePageFactory;
        $this->permissionManager = $permissionManager;
        $this->titleFactory = $titleFactory;
        $this->userFactory = $userFactory;
        $this->userNamePrefixSearch = $userNamePrefixSearch;
        $this->userNameUtils = $userNameUtils;
    }
 
    public function doesWrites() {
        return true;
    }
 
    public function execute( $par ) {
        $this->setHeaders();
        $this->addHelpLink( 'Help:Renameuser' );
 
        $this->checkPermissions();
        $this->checkReadOnly();
 
        $performer = $this->getUser();
 
        $block = $performer->getBlock();
        if ( $block ) {
            throw new UserBlockedError( $block );
        }
 
        $out = $this->getOutput();
        $out->addWikiMsg( 'renameuser-summary' );
 
        $this->useTransactionalTimeLimit();
 
        $request = $this->getRequest();
 
        // This works as "/" is not valid in usernames
        $userNames = $par !== null ? explode( '/', $par, 2 ) : [];
 
        // Get the old name, applying minimal validation or canonicalization
        $oldName = $request->getText( 'oldusername', $userNames[0] ?? '' );
        $oldName = trim( str_replace( '_', ' ', $oldName ) );
        $oldTitle = $this->titleFactory->makeTitle( NS_USER, $oldName );
 
        // Get the new name and canonicalize it
        $origNewName = $request->getText( 'newusername', $userNames[1] ?? '' );
        $origNewName = trim( str_replace( '_', ' ', $origNewName ) );
        // Force uppercase of new username, otherwise wikis
        // with wgCapitalLinks=false can create lc usernames
        $newTitle = $this->titleFactory->makeTitleSafe( NS_USER, $this->contentLanguage->ucfirst( $origNewName ) );
        $newName = $newTitle ? $newTitle->getText() : '';
 
        $reason = $request->getText( 'reason' );
        $moveChecked = $request->getBool( 'movepages', !$request->wasPosted() );
        $suppressChecked = $request->getCheck( 'suppressredirect' );
 
        if ( $oldName !== '' && $newName !== '' && !$request->getCheck( 'confirmaction' ) ) {
            $warnings = $this->getWarnings( $oldName, $newName );
        } else {
            $warnings = [];
        }
 
        $this->showForm( $oldName, $newName, $warnings, $reason, $moveChecked, $suppressChecked );
 
        if ( $request->getText( 'wpEditToken' ) === '' ) {
            # They probably haven't even submitted the form, so don't go further.
            return;
        }
        if ( $warnings ) {
            # Let user read warnings
            return;
        }
        if (
            !$request->wasPosted() ||
            !$performer->matchEditToken( $request->getVal( 'wpEditToken' ) )
        ) {
            $out->addHTML( Html::errorBox( $out->msg( 'renameuser-error-request' )->parse() ) );
 
            return;
        }
        if ( !$newTitle ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameusererrorinvalid' )->params( $request->getText( 'newusername' ) )->parse()
            ) );
 
            return;
        }
        if ( $oldName === $newName ) {
            $out->addHTML( Html::errorBox( $out->msg( 'renameuser-error-same-user' )->parse() ) );
 
            return;
        }
 
        // Do not act on temp users
        if ( $this->userNameUtils->isTemp( $oldName ) ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameuser-error-temp-user' )->plaintextParams( $oldName )->parse()
            ) );
            return;
        }
        if ( $this->userNameUtils->isTemp( $newName ) ||
            $this->userNameUtils->isTempReserved( $newName )
        ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameuser-error-temp-user-reserved' )->plaintextParams( $newName )->parse()
            ) );
            return;
        }
 
        // Suppress username validation of old username
        $oldUser = $this->userFactory->newFromName( $oldName, $this->userFactory::RIGOR_NONE );
        $newUser = $this->userFactory->newFromName( $newName, $this->userFactory::RIGOR_CREATABLE );
 
        // It won't be an object if for instance "|" is supplied as a value
        if ( !$oldUser ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameusererrorinvalid' )->params( $oldTitle->getText() )->parse()
            ) );
 
            return;
        }
        if ( !$newUser ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameusererrorinvalid' )->params( $newTitle->getText() )->parse()
            ) );
 
            return;
        }
 
        // Check for the existence of lowercase old username in database.
        // Until r19631 it was possible to rename a user to a name with first character as lowercase
        if ( $oldName !== $this->contentLanguage->ucfirst( $oldName ) ) {
            // old username was entered as lowercase -> check for existence in table 'user'
            $dbr = $this->dbConns->getReplicaDatabase();
            $uid = $dbr->newSelectQueryBuilder()
                ->select( 'user_id' )
                ->from( 'user' )
                ->where( [ 'user_name' => $oldName ] )
                ->caller( __METHOD__ )
                ->fetchField();
            if ( $uid === false ) {
                if ( !$this->getConfig()->get( 'CapitalLinks' ) ) {
                    $uid = 0; // We are on a lowercase wiki but lowercase username does not exist
                } else {
                    // We are on a standard uppercase wiki, use normal
                    $uid = $oldUser->idForName();
                    $oldTitle = $this->titleFactory->makeTitleSafe( NS_USER, $oldUser->getName() );
                    if ( !$oldTitle ) {
                        $out->addHTML( Html::errorBox(
                            $out->msg( 'renameusererrorinvalid' )->params( $oldName )->parse()
                        ) );
                        return;
                    }
                    $oldName = $oldTitle->getText();
                }
            }
        } else {
            // old username was entered as uppercase -> standard procedure
            $uid = $oldUser->idForName();
        }
 
        if ( $uid === 0 ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameusererrordoesnotexist' )->params( $oldName )->parse()
            ) );
 
            return;
        }
 
        if ( $newUser->idForName() !== 0 ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameusererrorexists' )->params( $newName )->parse()
            ) );
 
            return;
        }
 
        if ( $oldUser->equals( $performer ) ) {
            $out->addHTML( Html::errorBox(
                $out->msg( 'renameuser-error-self-rename' )->parse()
            ) );
 
            return;
        }
 
        // Give other affected extensions a chance to validate or abort
        if ( !$this->getHookRunner()->onRenameUserAbort( $uid, $oldName, $newName ) ) {
            return;
        }
 
        // Do the heavy lifting...
        $rename = new RenameuserSQL(
            $oldTitle->getText(),
            $newTitle->getText(),
            $uid,
            $this->getUser(),
            [ 'reason' => $reason ]
        );
        if ( !$rename->rename() ) {
            return;
        }
 
        // If this user is renaming themself, make sure that MovePage::move()
        // doesn't make a bunch of null move edits under the old name!
        if ( $performer->getId() === $uid ) {
            $performer->setName( $newTitle->getText() );
        }
 
        // Move any user pages
        if ( $moveChecked && $this->permissionManager->userHasRight( $performer, 'move' ) ) {
            $suppressRedirect = $suppressChecked
                && $this->permissionManager->userHasRight( $performer, 'suppressredirect' );
            $this->movePages( $oldTitle, $newTitle, $suppressRedirect );
        }
 
        // Output success message stuff :)
        $out->addHTML(
            Html::successBox(
                $out->msg( 'renameusersuccess' )
                    ->params( $oldTitle->getText(), $newTitle->getText() )
                    ->parse()
            )
        );
    }
 
    private function getWarnings( $oldName, $newName ) {
        $warnings = [];
        $oldUser = $this->userFactory->newFromName( $oldName, $this->userFactory::RIGOR_NONE );
        if ( $oldUser && !$oldUser->isTemp() && $oldUser->getBlock() ) {
            $warnings[] = [
                'renameuser-warning-currentblock',
                SpecialPage::getTitleFor( 'Log', 'block' )->getFullURL( [ 'page' => $oldName ] )
            ];
        }
        $this->getHookRunner()->onRenameUserWarning( $oldName, $newName, $warnings );
        return $warnings;
    }
 
    private function showForm( $oldName, $newName, $warnings, $reason, $moveChecked, $suppressChecked ) {
        $performer = $this->getUser();
 
        $formDescriptor = [
            'oldusername' => [
                'type' => 'user',
                'name' => 'oldusername',
                'label-message' => 'renameuserold',
                'default' => $oldName,
                'required' => true,
            ],
            'newusername' => [
                'type' => 'text',
                'name' => 'newusername',
                'label-message' => 'renameusernew',
                'default' => $newName,
                'required' => true,
            ],
            'reason' => [
                'type' => 'text',
                'name' => 'reason',
                'label-message' => 'renameuserreason',
                'maxlength' => CommentStore::COMMENT_CHARACTER_LIMIT,
                'maxlength-unit' => 'codepoints',
                'infusable' => true,
                'default' => $reason,
                'required' => true,
            ],
        ];
 
        if ( $this->permissionManager->userHasRight( $performer, 'move' ) ) {
            $formDescriptor['confirm'] = [
                'type' => 'check',
                'id' => 'movepages',
                'name' => 'movepages',
                'label-message' => 'renameusermove',
                'default' => $moveChecked,
            ];
        }
        if ( $this->permissionManager->userHasRight( $performer, 'suppressredirect' ) ) {
            $formDescriptor['suppressredirect'] = [
                'type' => 'check',
                'id' => 'suppressredirect',
                'name' => 'suppressredirect',
                'label-message' => 'renameusersuppress',
                'default' => $suppressChecked,
            ];
        }
 
        if ( $warnings ) {
            $warningsHtml = [];
            foreach ( $warnings as $warning ) {
                $warningsHtml[] = is_array( $warning ) ?
                    $this->msg( $warning[0] )->params( array_slice( $warning, 1 ) )->parse() :
                    $this->msg( $warning )->parse();
            }
 
            $formDescriptor['renameuserwarnings'] = [
                'type' => 'info',
                'label-message' => 'renameuserwarnings',
                'raw' => true,
                'default' => Html::warningBox( '<ul><li>' .
                    implode( '</li><li>', $warningsHtml ) . '</li></ul>' ),
            ];
 
            $formDescriptor['confirmaction'] = [
                'type' => 'check',
                'name' => 'confirmaction',
                'id' => 'confirmaction',
                'label-message' => 'renameuserconfirm',
            ];
        }
 
        $htmlForm = HTMLForm::factory( 'ooui', $formDescriptor, $this->getContext() )
            ->setMethod( 'post' )
            ->setId( 'renameuser' )
            ->setSubmitTextMsg( 'renameusersubmit' );
 
        $this->getOutput()->addHTML( $htmlForm->prepareForm()->getHTML( false ) );
    }
 
    private function movePages( Title $oldTitle, Title $newTitle, $suppressRedirect ) {
        $output = $this->movePageAndSubpages( $oldTitle, $newTitle, $suppressRedirect );
        $oldTalkTitle = $oldTitle->getTalkPageIfDefined();
        $newTalkTitle = $newTitle->getTalkPageIfDefined();
        if ( $oldTalkTitle && $newTalkTitle ) { // always true
            $output .= $this->movePageAndSubpages( $oldTalkTitle, $newTalkTitle, $suppressRedirect );
        }
 
        if ( $output !== '' ) {
            $this->getOutput()->addHTML( Html::rawElement( 'ul', [], $output ) );
        }
    }
 
    private function movePageAndSubpages( Title $oldTitle, Title $newTitle, $suppressRedirect ) {
        $performer = $this->getUser();
        $logReason = $this->msg(
            'renameuser-move-log', $oldTitle->getText(), $newTitle->getText()
        )->inContentLanguage()->text();
        $movePage = $this->movePageFactory->newMovePage( $oldTitle, $newTitle );
 
        $output = '';
        if ( $oldTitle->exists() ) {
            $status = $movePage->moveIfAllowed( $performer, $logReason, !$suppressRedirect );
            $output .= $this->getMoveStatusHtml( $status, $oldTitle, $newTitle );
        }
 
        $oldLength = strlen( $oldTitle->getText() );
        $batchStatus = $movePage->moveSubpagesIfAllowed( $performer, $logReason, !$suppressRedirect );
        foreach ( $batchStatus->getValue() as $titleText => $status ) {
            $oldSubpageTitle = Title::newFromText( $titleText );
            $newSubpageTitle = $newTitle->getSubpage(
                substr( $oldSubpageTitle->getText(), $oldLength + 1 ) );
            $output .= $this->getMoveStatusHtml( $status, $oldSubpageTitle, $newSubpageTitle );
        }
        return $output;
    }
 
    private function getMoveStatusHtml( Status $status, Title $oldTitle, Title $newTitle ) {
        $linkRenderer = $this->getLinkRenderer();
        if ( $status->hasMessage( 'articleexists' ) || $status->hasMessage( 'redirectexists' ) ) {
            $link = $linkRenderer->makeKnownLink( $newTitle );
            return Html::rawElement(
                'li',
                [ 'class' => 'mw-renameuser-pe' ],
                $this->msg( 'renameuser-page-exists' )->rawParams( $link )->escaped()
            );
        } else {
            if ( $status->isOK() ) {
                // oldPage is not known in case of redirect suppression
                $oldLink = $linkRenderer->makeLink( $oldTitle, null, [], [ 'redirect' => 'no' ] );
 
                // newPage is always known because the move was successful
                $newLink = $linkRenderer->makeKnownLink( $newTitle );
 
                return Html::rawElement(
                    'li',
                    [ 'class' => 'mw-renameuser-pm' ],
                    $this->msg( 'renameuser-page-moved' )->rawParams( $oldLink, $newLink )->escaped()
                );
            } else {
                $oldLink = $linkRenderer->makeKnownLink( $oldTitle );
                $newLink = $linkRenderer->makeLink( $newTitle );
                return Html::rawElement(
                    'li', [ 'class' => 'mw-renameuser-pu' ],
                    $this->msg( 'renameuser-page-unmoved' )->rawParams( $oldLink, $newLink )->escaped()
                );
            }
        }
    }
 
    public function prefixSearchSubpages( $search, $limit, $offset ) {
        $user = $this->userFactory->newFromName( $search );
        if ( !$user ) {
            // No prefix suggestion for invalid user
            return [];
        }
        // Autocomplete subpage as user list - public to allow caching
        return $this->userNamePrefixSearch->search( 'public', $search, $limit, $offset );
    }
 
    protected function getGroupName() {
        return 'users';
    }
}
 
class_alias( SpecialRenameUser::class, 'SpecialRenameuser' );