maintenance/deleteDefaultMessages.php

   1 <?php
   2 /**
   3  * Deletes all pages in the MediaWiki namespace which were last edited by
   4  * "MediaWiki default".
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  * @file
  22  * @ingroup Maintenance
  23  */
  24
  25 // @codeCoverageIgnoreStart
  26 require_once __DIR__ . '/Maintenance.php';
  27 // @codeCoverageIgnoreEnd
  28
  29 use MediaWiki\Maintenance\Maintenance;
  30 use MediaWiki\StubObject\StubGlobalUser;
  31 use MediaWiki\Title\Title;
  32 use MediaWiki\User\ActorMigration;
  33 use MediaWiki\User\User;
  34
  35 /**
  36  * Maintenance script that deletes all pages in the MediaWiki namespace
  37  * which were last edited by "MediaWiki default".
  38  *
  39  * @ingroup Maintenance
  40  */
  41 class DeleteDefaultMessages extends Maintenance {
  42         public function __construct() {
  43                 parent::__construct();
  44                 $this->addDescription( 'Deletes all pages in the MediaWiki namespace' .
  45                         ' which were last edited by "MediaWiki default"' );
  46                 $this->addOption( 'dry-run', 'Perform a dry run, delete nothing' );
  47         }
  48
  49         public function execute() {
  50                 $services = $this->getServiceContainer();
  51
  52                 $this->output( "Checking existence of old default messages..." );
  53                 $dbr = $this->getReplicaDB();
  54
  55                 $userFactory = $services->getUserFactory();
  56                 $actorQuery = ActorMigration::newMigration()
  57                         ->getWhere( $dbr, 'rev_user', $userFactory->newFromName( 'MediaWiki default' ) );
  58
  59                 $res = $dbr->newSelectQueryBuilder()
  60                         ->select( [ 'page_namespace', 'page_title' ] )
  61                         ->from( 'page' )
  62                         ->join( 'revision', null, 'page_latest=rev_id' )
  63                         ->tables( $actorQuery['tables'] )
  64                         ->where( [
  65                                 'page_namespace' => NS_MEDIAWIKI,
  66                                 $actorQuery['conds'],
  67                         ] )
  68                         ->joinConds( $actorQuery['joins'] )
  69                         ->caller( __METHOD__ )
  70                         ->fetchResultSet();
  71
  72                 if ( $res->numRows() == 0 ) {
  73                         // No more messages left
  74                         $this->output( "done.\n" );
  75                         return;
  76                 }
  77
  78                 $dryrun = $this->hasOption( 'dry-run' );
  79                 if ( $dryrun ) {
  80                         foreach ( $res as $row ) {
  81                                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
  82                                 $this->output( "\n* [[$title]]" );
  83                         }
  84                         $this->output( "\n\nRun again without --dry-run to delete these pages.\n" );
  85                         return;
  86                 }
  87
  88                 // Deletions will be made by $user temporarily added to the bot group
  89                 // in order to hide it in RecentChanges.
  90                 $user = User::newSystemUser( 'MediaWiki default', [ 'steal' => true ] );
  91                 if ( !$user ) {
  92                         $this->fatalError( "Invalid username" );
  93                 }
  94                 $userGroupManager = $services->getUserGroupManager();
  95                 $userGroupManager->addUserToGroup( $user, 'bot' );
  96                 StubGlobalUser::setUser( $user );
  97
  98                 // Handle deletion
  99                 $this->output( "\n...deleting old default messages (this may take a long time!)...", 'msg' );
 100                 $dbw = $this->getPrimaryDB();
 101
 102                 $wikiPageFactory = $services->getWikiPageFactory();
 103                 $delPageFactory = $services->getDeletePageFactory();
 104
 105                 foreach ( $res as $row ) {
 106                         $this->waitForReplication();
 107                         $dbw->ping();
 108                         $title = Title::makeTitle( $row->page_namespace, $row->page_title );
 109                         $page = $wikiPageFactory->newFromTitle( $title );
 110                         // FIXME: Deletion failures should be reported, not silently ignored.
 111                         $delPageFactory->newDeletePage( $page, $user )->deleteUnsafe( 'No longer required' );
 112                 }
 113
 114                 $this->output( "done!\n", 'msg' );
 115         }
 116 }
 117
 118 // @codeCoverageIgnoreStart
 119 $maintClass = DeleteDefaultMessages::class;
 120 require_once RUN_MAINTENANCE_IF_MAIN;
 121 // @codeCoverageIgnoreEnd