SpecialNuke.php

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<?php
 
class SpecialNuke extends SpecialPage {
 
    public function __construct() {
        parent::__construct( 'Nuke', 'nuke' );
    }
 
    public function doesWrites() {
        return true;
    }
 
    public function execute( $par ) {
        $this->setHeaders();
        $this->checkPermissions();
        $this->checkReadOnly();
        $this->outputHeader();
 
        $currentUser = $this->getUser();
        if ( $currentUser->isBlocked() ) {
            $block = $currentUser->getBlock();
            throw new UserBlockedError( $block );
        }
 
        $req = $this->getRequest();
        $target = trim( $req->getText( 'target', $par ) );
 
        // Normalise name
        if ( $target !== '' ) {
            $user = User::newFromName( $target );
            if ( $user ) {
                $target = $user->getName();
            }
        }
 
        $msg = $target === '' ?
            $this->msg( 'nuke-multiplepeople' )->inContentLanguage()->text() :
            $this->msg( 'nuke-defaultreason', $target )->
            inContentLanguage()->text();
        $reason = $req->getText( 'wpReason', $msg );
 
        $limit = $req->getInt( 'limit', 500 );
        $namespace = $req->getVal( 'namespace' );
        $namespace = ctype_digit( $namespace ) ? (int)$namespace : null;
 
        if ( $req->wasPosted()
            && $currentUser->matchEditToken( $req->getVal( 'wpEditToken' ) )
        ) {
            if ( $req->getVal( 'action' ) === 'delete' ) {
                $pages = $req->getArray( 'pages' );
 
                if ( $pages ) {
                    $this->doDelete( $pages, $reason );
 
                    return;
                }
            } elseif ( $req->getVal( 'action' ) === 'submit' ) {
                $this->listForm( $target, $reason, $limit, $namespace );
            } else {
                $this->promptForm();
            }
        } elseif ( $target === '' ) {
            $this->promptForm();
        } else {
            $this->listForm( $target, $reason, $limit, $namespace );
        }
    }
 
    protected function promptForm( $userName = '' ) {
        $out = $this->getOutput();
 
        $out->addWikiMsg( 'nuke-tools' );
 
        $formDescriptor = [
            'nuke-target' => [
                'id' => 'nuke-target',
                'default' => $userName,
                'label' => $this->msg( 'nuke-userorip' )->text(),
                'type' => 'user',
                'name' => 'target',
                'autofocus' => true
            ],
            'nuke-pattern' => [
                'id' => 'nuke-pattern',
                'label' => $this->msg( 'nuke-pattern' )->text(),
                'maxLength' => 40,
                'type' => 'text',
                'name' => 'pattern'
            ],
            'namespace' => [
                'id' => 'nuke-namespace',
                'type' => 'namespaceselect',
                'label' => $this->msg( 'nuke-namespace' )->text(),
                'all' => 'all',
                'name' => 'namespace'
            ],
            'limit' => [
                'id' => 'nuke-limit',
                'maxLength' => 7,
                'default' => 500,
                'label' => $this->msg( 'nuke-maxpages' )->text(),
                'type' => 'int',
                'name' => 'limit'
            ]
        ];
 
        HTMLForm::factory( 'ooui', $formDescriptor, $this->getContext() )
            ->setName( 'massdelete' )
            ->setFormIdentifier( 'massdelete' )
            ->setWrapperLegendMsg( 'nuke' )
            ->setSubmitTextMsg( 'nuke-submit-user' )
            ->setSubmitName( 'nuke-submit-user' )
            ->setAction( $this->getPageTitle()->getLocalURL( 'action=submit' ) )
            ->setMethod( 'post' )
            ->addHiddenField( 'wpEditToken', $this->getUser()->getEditToken() )
            ->prepareForm()
            ->displayForm( false );
    }
 
    protected function listForm( $username, $reason, $limit, $namespace = null ) {
        $out = $this->getOutput();
 
        $pages = $this->getNewPages( $username, $limit, $namespace );
 
        if ( count( $pages ) === 0 ) {
            if ( $username === '' ) {
                $out->addWikiMsg( 'nuke-nopages-global' );
            } else {
                $out->addWikiMsg( 'nuke-nopages', $username );
            }
 
            $this->promptForm( $username );
 
            return;
        }
 
        $out->addModules( 'ext.nuke.confirm' );
 
        if ( $username === '' ) {
            $out->addWikiMsg( 'nuke-list-multiple' );
        } else {
            $out->addWikiMsg( 'nuke-list', $username );
        }
 
        $nuke = $this->getPageTitle();
 
        $out->addHTML(
            Xml::openElement( 'form', [
                    'action' => $nuke->getLocalURL( 'action=delete' ),
                    'method' => 'post',
                    'name' => 'nukelist' ]
            ) .
            Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) .
            Xml::tags( 'p',
                null,
                Xml::inputLabel(
                    $this->msg( 'deletecomment' )->text(), 'wpReason', 'wpReason', 70, $reason
                )
            )
        );
 
        // Select: All, None, Invert
        // ListToggle was introduced in 1.27, old code kept for B/C
        if ( class_exists( 'ListToggle' ) ) {
            $listToggle = new ListToggle( $this->getOutput() );
            $selectLinks = $listToggle->getHTML();
        } else {
            $out->addModules( 'ext.nuke' );
 
            $links = [];
            $links[] = '<a href="#" id="toggleall">' .
                $this->msg( 'powersearch-toggleall' )->escaped() . '</a>';
            $links[] = '<a href="#" id="togglenone">' .
                $this->msg( 'powersearch-togglenone' )->escaped() . '</a>';
            $links[] = '<a href="#" id="toggleinvert">' .
                $this->msg( 'nuke-toggleinvert' )->escaped() . '</a>';
 
            $selectLinks = Xml::tags( 'p',
                null,
                $this->msg( 'nuke-select' )
                    ->rawParams( $this->getLanguage()->commaList( $links ) )->escaped()
            );
        }
 
        $out->addHTML(
            $selectLinks .
            '<ul>'
        );
 
        $wordSeparator = $this->msg( 'word-separator' )->escaped();
        $commaSeparator = $this->msg( 'comma-separator' )->escaped();
 
        $linkRenderer = $this->getLinkRenderer();
        foreach ( $pages as $info ) {
            list( $title, $userName ) = $info;
 
            $image = $title->inNamespace( NS_FILE ) ? wfLocalFile( $title ) : false;
            $thumb = $image && $image->exists() ?
                $image->transform( [ 'width' => 120, 'height' => 120 ], 0 ) :
                false;
 
            $userNameText = $userName ?
                $this->msg( 'nuke-editby', $userName )->parse() . $commaSeparator :
                '';
            $changesLink = $linkRenderer->makeKnownLink(
                $title,
                $this->msg( 'nuke-viewchanges' )->text(),
                [],
                [ 'action' => 'history' ]
            );
            $out->addHTML( '<li>' .
                Xml::check(
                    'pages[]',
                    true,
                    [ 'value' => $title->getPrefixedDBkey() ]
                ) . '&#160;' .
                ( $thumb ? $thumb->toHtml( [ 'desc-link' => true ] ) : '' ) .
                $linkRenderer->makeKnownLink( $title ) . $wordSeparator .
                $this->msg( 'parentheses' )->rawParams( $userNameText . $changesLink )->escaped() .
                "</li>\n" );
        }
 
        $out->addHTML(
            "</ul>\n" .
            Xml::submitButton( $this->msg( 'nuke-submit-delete' )->text() ) .
            '</form>'
        );
    }
 
    protected function getNewPages( $username, $limit, $namespace = null ) {
        $dbr = wfGetDB( DB_REPLICA );
 
        $what = [
            'rc_namespace',
            'rc_title',
            'rc_timestamp',
        ];
 
        $where = [ "(rc_new = 1) OR (rc_log_type = 'upload' AND rc_log_action = 'upload')" ];
 
        if ( class_exists( 'ActorMigration' ) ) {
            if ( $username === '' ) {
                $actorQuery = ActorMigration::newMigration()->getJoin( 'rc_user' );
                $what['rc_user_text'] = $actorQuery['fields']['rc_user_text'];
            } else {
                $actorQuery = ActorMigration::newMigration()
                    ->getWhere( $dbr, 'rc_user', User::newFromName( $username, false ) );
                $where[] = $actorQuery['conds'];
            }
        } else {
            $actorQuery = [ 'tables' => [], 'joins' => [] ];
            if ( $username === '' ) {
                $what[] = 'rc_user_text';
            } else {
                $where['rc_user_text'] = $username;
            }
        }
 
        if ( $namespace !== null ) {
            $where['rc_namespace'] = $namespace;
        }
 
        $pattern = $this->getRequest()->getText( 'pattern' );
        if ( !is_null( $pattern ) && trim( $pattern ) !== '' ) {
            // $pattern is a SQL pattern supporting wildcards, so buildLike
            // will not work.
            $where[] = 'rc_title LIKE ' . $dbr->addQuotes( $pattern );
        }
        $group = implode( ', ', $what );
 
        $result = $dbr->select(
            [ 'recentchanges' ] + $actorQuery['tables'],
            $what,
            $where,
            __METHOD__,
            [
                'ORDER BY' => 'rc_timestamp DESC',
                'GROUP BY' => $group,
                'LIMIT' => $limit
            ],
            $actorQuery['joins']
        );
 
        $pages = [];
 
        foreach ( $result as $row ) {
            $pages[] = [
                Title::makeTitle( $row->rc_namespace, $row->rc_title ),
                $username === '' ? $row->rc_user_text : false
            ];
        }
 
        // Allows other extensions to provide pages to be nuked that don't use
        // the recentchanges table the way mediawiki-core does
        Hooks::run( 'NukeGetNewPages', [ $username, $pattern, $namespace, $limit, &$pages ] );
 
        // Re-enforcing the limit *after* the hook because other extensions
        // may add and/or remove pages. We need to make sure we don't end up
        // with more pages than $limit.
        if ( count( $pages ) > $limit ) {
            $pages = array_slice( $pages, 0, $limit );
        }
 
        return $pages;
    }
 
    protected function doDelete( array $pages, $reason ) {
        $res = [];
 
        foreach ( $pages as $page ) {
            $title = Title::newFromText( $page );
 
            $deletionResult = false;
            if ( !Hooks::run( 'NukeDeletePage', [ $title, $reason, &$deletionResult ] ) ) {
                if ( $deletionResult ) {
                    $res[] = $this->msg( 'nuke-deleted', $title->getPrefixedText() )->parse();
                } else {
                    $res[] = $this->msg( 'nuke-not-deleted', $title->getPrefixedText() )->parse();
                }
                continue;
            }
 
            $file = $title->getNamespace() === NS_FILE ? wfLocalFile( $title ) : false;
            $permission_errors = $title->getUserPermissionsErrors( 'delete', $this->getUser() );
 
            if ( $permission_errors !== [] ) {
                throw new PermissionsError( 'delete', $permission_errors );
            }
 
            if ( $file ) {
                $oldimage = null; // Must be passed by reference
                $ok = FileDeleteForm::doDelete( $title, $file, $oldimage, $reason, false )->isOK();
            } else {
                $article = new Article( $title, 0 );
                $ok = $article->doDeleteArticle( $reason );
            }
 
            if ( $ok ) {
                $res[] = $this->msg( 'nuke-deleted', $title->getPrefixedText() )->parse();
            } else {
                $res[] = $this->msg( 'nuke-not-deleted', $title->getPrefixedText() )->parse();
            }
        }
 
        $this->getOutput()->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $res ) . "</li>\n</ul>\n" );
        $this->getOutput()->addWikiMsg( 'nuke-delete-more' );
    }
 
    public function prefixSearchSubpages( $search, $limit, $offset ) {
        if ( !class_exists( 'UserNamePrefixSearch' ) ) { // check for version 1.27
            return [];
        }
        $user = User::newFromName( $search );
        if ( !$user ) {
            // No prefix suggestion for invalid user
            return [];
        }
        // Autocomplete subpage as user list - public to allow caching
        return UserNamePrefixSearch::search( 'public', $search, $limit, $offset );
    }
 
    protected function getGroupName() {
        return 'pagetools';
    }
}