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 require_once __DIR__ . '/Maintenance.php';
  26
  27 /**
  28  * Maintenance script that deletes all pages in the MediaWiki namespace
  29  * which were last edited by "MediaWiki default".
  30  *
  31  * @ingroup Maintenance
  32  */
  33 class DeleteDefaultMessages extends Maintenance {
  34         public function __construct() {
  35                 parent::__construct();
  36                 $this->addDescription( 'Deletes all pages in the MediaWiki namespace' .
  37                         ' which were last edited by "MediaWiki default"' );
  38                 $this->addOption( 'dry-run', 'Perform a dry run, delete nothing' );
  39         }
  40
  41         public function execute() {
  42                 global $wgUser;
  43
  44                 $this->output( "Checking existence of old default messages..." );
  45                 $dbr = $this->getDB( DB_REPLICA );
  46
  47                 $actorQuery = ActorMigration::newMigration()
  48                         ->getWhere( $dbr, 'rev_user', User::newFromName( 'MediaWiki default' ) );
  49                 $res = $dbr->select(
  50                         [ 'page', 'revision' ] + $actorQuery['tables'],
  51                         [ 'page_namespace', 'page_title' ],
  52                         [
  53                                 'page_namespace' => NS_MEDIAWIKI,
  54                                 $actorQuery['conds'],
  55                         ],
  56                         __METHOD__,
  57                         [],
  58                         [ 'revision' => [ 'JOIN', 'page_latest=rev_id' ] ] + $actorQuery['joins']
  59                 );
  60
  61                 if ( $dbr->numRows( $res ) == 0 ) {
  62                         // No more messages left
  63                         $this->output( "done.\n" );
  64                         return;
  65                 }
  66
  67                 $dryrun = $this->hasOption( 'dry-run' );
  68                 if ( $dryrun ) {
  69                         foreach ( $res as $row ) {
  70                                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
  71                                 $this->output( "\n* [[$title]]" );
  72                         }
  73                         $this->output( "\n\nRun again without --dry-run to delete these pages.\n" );
  74                         return;
  75                 }
  76
  77                 // Deletions will be made by $user temporarly added to the bot group
  78                 // in order to hide it in RecentChanges.
  79                 $user = User::newFromName( 'MediaWiki default' );
  80                 if ( !$user ) {
  81                         $this->fatalError( "Invalid username" );
  82                 }
  83                 $user->addGroup( 'bot' );
  84                 $wgUser = $user;
  85
  86                 // Handle deletion
  87                 $this->output( "\n...deleting old default messages (this may take a long time!)...", 'msg' );
  88                 $dbw = $this->getDB( DB_MASTER );
  89
  90                 foreach ( $res as $row ) {
  91                         wfWaitForSlaves();
  92                         $dbw->ping();
  93                         $title = Title::makeTitle( $row->page_namespace, $row->page_title );
  94                         $page = WikiPage::factory( $title );
  95                         $error = ''; // Passed by ref
  96                         // FIXME: Deletion failures should be reported, not silently ignored.
  97                         $page->doDeleteArticle( 'No longer required', false, 0, true, $error, $user );
  98                 }
  99
 100                 $this->output( "done!\n", 'msg' );
 101         }
 102 }
 103
 104 $maintClass = DeleteDefaultMessages::class;
 105 require_once RUN_MAINTENANCE_IF_MAIN;