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| 1 | <?php |
| 2 | /** |
| 3 | * Fix double redirects. |
| 4 | * |
| 5 | * Copyright © 2011 Ilmari Karonen <nospam@vyznev.net> |
| 6 | * https://www.mediawiki.org/ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 21 | * http://www.gnu.org/copyleft/gpl.html |
| 22 | * |
| 23 | * @file |
| 24 | * @author Ilmari Karonen <nospam@vyznev.net> |
| 25 | * @ingroup Maintenance |
| 26 | */ |
| 27 | |
| 28 | use MediaWiki\Title\Title; |
| 29 | |
| 30 | require_once __DIR__ . '/Maintenance.php'; |
| 31 | |
| 32 | /** |
| 33 | * Maintenance script that fixes double redirects. |
| 34 | * |
| 35 | * @ingroup Maintenance |
| 36 | */ |
| 37 | class FixDoubleRedirects extends Maintenance { |
| 38 | public function __construct() { |
| 39 | parent::__construct(); |
| 40 | $this->addDescription( 'Script to fix double redirects' ); |
| 41 | $this->addOption( 'async', 'Don\'t fix anything directly, just queue the jobs' ); |
| 42 | $this->addOption( 'title', 'Fix only redirects pointing to this page', false, true ); |
| 43 | $this->addOption( 'dry-run', 'Perform a dry run, fix nothing' ); |
| 44 | } |
| 45 | |
| 46 | public function execute() { |
| 47 | $async = $this->hasOption( 'async' ); |
| 48 | $dryrun = $this->hasOption( 'dry-run' ); |
| 49 | |
| 50 | if ( $this->hasOption( 'title' ) ) { |
| 51 | $title = Title::newFromText( $this->getOption( 'title' ) ); |
| 52 | if ( !$title || !$title->isRedirect() ) { |
| 53 | $this->fatalError( $title->getPrefixedText() . " is not a redirect!\n" ); |
| 54 | } |
| 55 | } else { |
| 56 | $title = null; |
| 57 | } |
| 58 | |
| 59 | $dbr = $this->getReplicaDB(); |
| 60 | |
| 61 | // See also SpecialDoubleRedirects |
| 62 | // TODO: support batch querying |
| 63 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 64 | ->select( [ |
| 65 | 'pa_namespace' => 'pa.page_namespace', |
| 66 | 'pa_title' => 'pa.page_title', |
| 67 | 'pb_namespace' => 'pb.page_namespace', |
| 68 | 'pb_title' => 'pb.page_title', |
| 69 | ] ) |
| 70 | ->from( 'redirect' ) |
| 71 | ->join( 'page', 'pa', 'rd_from = pa.page_id' ) |
| 72 | ->join( 'page', 'pb', [ 'rd_namespace = pb.page_namespace', 'rd_title = pb.page_title' ] ) |
| 73 | // T42352 |
| 74 | ->where( [ 'rd_interwiki' => '', 'pb.page_is_redirect' => 1 ] ); |
| 75 | |
| 76 | if ( $title != null ) { |
| 77 | $queryBuilder->andWhere( [ |
| 78 | 'pb.page_namespace' => $title->getNamespace(), |
| 79 | 'pb.page_title' => $title->getDBkey() |
| 80 | ] ); |
| 81 | } |
| 82 | $res = $queryBuilder->caller( __METHOD__ )->fetchResultSet(); |
| 83 | |
| 84 | if ( !$res->numRows() ) { |
| 85 | $this->output( "No double redirects found.\n" ); |
| 86 | |
| 87 | return; |
| 88 | } |
| 89 | |
| 90 | $jobs = []; |
| 91 | $processedTitles = "\n"; |
| 92 | $n = 0; |
| 93 | $services = $this->getServiceContainer(); |
| 94 | foreach ( $res as $row ) { |
| 95 | $titleA = Title::makeTitle( $row->pa_namespace, $row->pa_title ); |
| 96 | $titleB = Title::makeTitle( $row->pb_namespace, $row->pb_title ); |
| 97 | if ( !$titleA->canExist() || !$titleB->canExist() ) { |
| 98 | $this->error( "Cannot fix redirect from" . |
| 99 | ( $titleA->canExist() ? "" : " invalid" ) . " title " . $titleA->getPrefixedText() |
| 100 | . " to new" . |
| 101 | ( $titleB->canExist() ? "" : " invalid" ) . " target " . $titleB->getPrefixedText() |
| 102 | . "\n" |
| 103 | ); |
| 104 | continue; |
| 105 | } |
| 106 | |
| 107 | $processedTitles .= "* [[$titleA]]\n"; |
| 108 | |
| 109 | $job = new DoubleRedirectJob( |
| 110 | $titleA, |
| 111 | [ |
| 112 | 'reason' => 'maintenance', |
| 113 | 'redirTitle' => $titleB->getPrefixedDBkey() |
| 114 | ], |
| 115 | $services->getRevisionLookup(), |
| 116 | $services->getMagicWordFactory(), |
| 117 | $services->getWikiPageFactory() |
| 118 | ); |
| 119 | |
| 120 | if ( !$async ) { |
| 121 | $success = ( $dryrun ? true : $job->run() ); |
| 122 | if ( !$success ) { |
| 123 | $this->error( "Error fixing " . $titleA->getPrefixedText() |
| 124 | . ": " . $job->getLastError() . "\n" ); |
| 125 | } |
| 126 | } else { |
| 127 | $jobs[] = $job; |
| 128 | if ( count( $jobs ) > DoubleRedirectJob::MAX_DR_JOBS_COUNTER ) { |
| 129 | $this->queueJobs( $jobs, $dryrun ); |
| 130 | $jobs = []; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | if ( ++$n % 100 == 0 ) { |
| 135 | $this->output( "$n...\n" ); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | if ( count( $jobs ) ) { |
| 140 | $this->queueJobs( $jobs, $dryrun ); |
| 141 | } |
| 142 | $this->output( "$n double redirects processed" . $processedTitles . "\n" ); |
| 143 | } |
| 144 | |
| 145 | protected function queueJobs( $jobs, $dryrun = false ) { |
| 146 | $this->output( "Queuing batch of " . count( $jobs ) . " double redirects.\n" ); |
| 147 | $this->getServiceContainer()->getJobQueueGroup()->push( $dryrun ? [] : $jobs ); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | $maintClass = FixDoubleRedirects::class; |
| 152 | require_once RUN_MAINTENANCE_IF_MAIN; |