maintenance/checkBadRedirects.php

   1 <?php
   2 /**
   3  * Check that pages marked as being redirects really are.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 use MediaWiki\MediaWikiServices;
  25 use MediaWiki\Revision\SlotRecord;
  26
  27 require_once __DIR__ . '/Maintenance.php';
  28
  29 /**
  30  * Maintenance script to check that pages marked as being redirects really are.
  31  *
  32  * @ingroup Maintenance
  33  */
  34 class CheckBadRedirects extends Maintenance {
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->addDescription( 'Check for bad redirects' );
  38         }
  39
  40         public function execute() {
  41                 $this->output( "Fetching redirects...\n" );
  42                 $dbr = $this->getDB( DB_REPLICA );
  43                 $result = $dbr->select(
  44                         [ 'page' ],
  45                         [ 'page_namespace', 'page_title', 'page_latest' ],
  46                         [ 'page_is_redirect' => 1 ],
  47                         __METHOD__
  48                 );
  49
  50                 $count = $result->numRows();
  51                 $this->output( "Found $count redirects.\n" .
  52                         "Checking for bad redirects:\n\n" );
  53
  54                 $revLookup = MediaWikiServices::getInstance()->getRevisionLookup();
  55                 foreach ( $result as $row ) {
  56                         $title = Title::makeTitle( $row->page_namespace, $row->page_title );
  57                         $revRecord = $revLookup->getRevisionById( $row->page_latest );
  58                         if ( $revRecord ) {
  59                                 $target = $revRecord->getContent( SlotRecord::MAIN )->getRedirectTarget();
  60                                 if ( !$target ) {
  61                                         $this->output( $title->getPrefixedText() . "\n" );
  62                                 }
  63                         }
  64                 }
  65                 $this->output( "\nDone.\n" );
  66         }
  67 }
  68
  69 $maintClass = CheckBadRedirects::class;
  70 require_once RUN_MAINTENANCE_IF_MAIN;