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-rw-r--r--www/wiki/maintenance/orphans.php258
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diff --git a/www/wiki/maintenance/orphans.php b/www/wiki/maintenance/orphans.php
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+<?php
+/**
+ * Look for 'orphan' revisions hooked to pages which don't exist and
+ * 'childless' pages with no revisions.
+ * Then, kill the poor widows and orphans.
+ * Man this is depressing.
+ *
+ * Copyright © 2005 Brion Vibber <brion@pobox.com>
+ * https://www.mediawiki.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author <brion@pobox.com>
+ * @ingroup Maintenance
+ */
+
+require_once __DIR__ . '/Maintenance.php';
+
+use Wikimedia\Rdbms\IMaintainableDatabase;
+
+/**
+ * Maintenance script that looks for 'orphan' revisions hooked to pages which
+ * don't exist and 'childless' pages with no revisions.
+ *
+ * @ingroup Maintenance
+ */
+class Orphans extends Maintenance {
+ public function __construct() {
+ parent::__construct();
+ $this->addDescription( "Look for 'orphan' revisions hooked to pages which don't exist\n" .
+ "and 'childless' pages with no revisions\n" .
+ "Then, kill the poor widows and orphans\n" .
+ "Man this is depressing"
+ );
+ $this->addOption( 'fix', 'Actually fix broken entries' );
+ }
+
+ public function execute() {
+ $this->checkOrphans( $this->hasOption( 'fix' ) );
+ $this->checkSeparation( $this->hasOption( 'fix' ) );
+ # Does not work yet, do not use
+ # $this->checkWidows( $this->hasOption( 'fix' ) );
+ }
+
+ /**
+ * Lock the appropriate tables for the script
+ * @param IMaintainableDatabase $db
+ * @param string[] $extraTable The name of any extra tables to lock (eg: text)
+ */
+ private function lockTables( $db, $extraTable = [] ) {
+ $tbls = [ 'page', 'revision', 'redirect' ];
+ if ( $extraTable ) {
+ $tbls = array_merge( $tbls, $extraTable );
+ }
+ $db->lockTables( [], $tbls, __METHOD__, false );
+ }
+
+ /**
+ * Check for orphan revisions
+ * @param bool $fix Whether to fix broken revisions when found
+ */
+ private function checkOrphans( $fix ) {
+ $dbw = $this->getDB( DB_MASTER );
+ $commentStore = CommentStore::getStore();
+
+ if ( $fix ) {
+ $this->lockTables( $dbw );
+ }
+
+ $commentQuery = $commentStore->getJoin( 'rev_comment' );
+ $actorQuery = ActorMigration::newMigration()->getJoin( 'rev_user' );
+
+ $this->output( "Checking for orphan revision table entries... "
+ . "(this may take a while on a large wiki)\n" );
+ $result = $dbw->select(
+ [ 'revision', 'page' ] + $commentQuery['tables'] + $actorQuery['tables'],
+ [ 'rev_id', 'rev_page', 'rev_timestamp' ] + $commentQuery['fields'] + $actorQuery['fields'],
+ [ 'page_id' => null ],
+ __METHOD__,
+ [],
+ [ 'page' => [ 'LEFT JOIN', [ 'rev_page=page_id' ] ] ] + $commentQuery['joins']
+ + $actorQuery['joins']
+ );
+ $orphans = $result->numRows();
+ if ( $orphans > 0 ) {
+ global $wgContLang;
+
+ $this->output( "$orphans orphan revisions...\n" );
+ $this->output( sprintf(
+ "%10s %10s %14s %20s %s\n",
+ 'rev_id', 'rev_page', 'rev_timestamp', 'rev_user_text', 'rev_comment'
+ ) );
+
+ foreach ( $result as $row ) {
+ $comment = $commentStore->getComment( 'rev_comment', $row )->text;
+ if ( $comment !== '' ) {
+ $comment = '(' . $wgContLang->truncate( $comment, 40 ) . ')';
+ }
+ $this->output( sprintf( "%10d %10d %14s %20s %s\n",
+ $row->rev_id,
+ $row->rev_page,
+ $row->rev_timestamp,
+ $wgContLang->truncate( $row->rev_user_text, 17 ),
+ $comment ) );
+ if ( $fix ) {
+ $dbw->delete( 'revision', [ 'rev_id' => $row->rev_id ] );
+ }
+ }
+ if ( !$fix ) {
+ $this->output( "Run again with --fix to remove these entries automatically.\n" );
+ }
+ } else {
+ $this->output( "No orphans! Yay!\n" );
+ }
+
+ if ( $fix ) {
+ $dbw->unlockTables( __METHOD__ );
+ }
+ }
+
+ /**
+ * @param bool $fix
+ * @todo DON'T USE THIS YET! It will remove entries which have children,
+ * but which aren't properly attached (eg if page_latest is bogus
+ * but valid revisions do exist)
+ */
+ private function checkWidows( $fix ) {
+ $dbw = $this->getDB( DB_MASTER );
+ $page = $dbw->tableName( 'page' );
+ $revision = $dbw->tableName( 'revision' );
+
+ if ( $fix ) {
+ $this->lockTables( $dbw );
+ }
+
+ $this->output( "\nChecking for childless page table entries... "
+ . "(this may take a while on a large wiki)\n" );
+ $result = $dbw->query( "
+ SELECT *
+ FROM $page LEFT OUTER JOIN $revision ON page_latest=rev_id
+ WHERE rev_id IS NULL
+ " );
+ $widows = $result->numRows();
+ if ( $widows > 0 ) {
+ $this->output( "$widows childless pages...\n" );
+ $this->output( sprintf( "%10s %11s %2s %s\n", 'page_id', 'page_latest', 'ns', 'page_title' ) );
+ foreach ( $result as $row ) {
+ printf( "%10d %11d %2d %s\n",
+ $row->page_id,
+ $row->page_latest,
+ $row->page_namespace,
+ $row->page_title );
+ if ( $fix ) {
+ $dbw->delete( 'page', [ 'page_id' => $row->page_id ] );
+ }
+ }
+ if ( !$fix ) {
+ $this->output( "Run again with --fix to remove these entries automatically.\n" );
+ }
+ } else {
+ $this->output( "No childless pages! Yay!\n" );
+ }
+
+ if ( $fix ) {
+ $dbw->unlockTables( __METHOD__ );
+ }
+ }
+
+ /**
+ * Check for pages where page_latest is wrong
+ * @param bool $fix Whether to fix broken entries
+ */
+ private function checkSeparation( $fix ) {
+ $dbw = $this->getDB( DB_MASTER );
+ $page = $dbw->tableName( 'page' );
+ $revision = $dbw->tableName( 'revision' );
+
+ if ( $fix ) {
+ $this->lockTables( $dbw, [ 'user', 'text' ] );
+ }
+
+ $this->output( "\nChecking for pages whose page_latest links are incorrect... "
+ . "(this may take a while on a large wiki)\n" );
+ $result = $dbw->query( "
+ SELECT *
+ FROM $page LEFT OUTER JOIN $revision ON page_latest=rev_id
+ " );
+ $found = 0;
+ foreach ( $result as $row ) {
+ $result2 = $dbw->query( "
+ SELECT MAX(rev_timestamp) as max_timestamp
+ FROM $revision
+ WHERE rev_page=" . (int)( $row->page_id )
+ );
+ $row2 = $dbw->fetchObject( $result2 );
+ if ( $row2 ) {
+ if ( $row->rev_timestamp != $row2->max_timestamp ) {
+ if ( $found == 0 ) {
+ $this->output( sprintf( "%10s %10s %14s %14s\n",
+ 'page_id', 'rev_id', 'timestamp', 'max timestamp' ) );
+ }
+ ++$found;
+ $this->output( sprintf( "%10d %10d %14s %14s\n",
+ $row->page_id,
+ $row->page_latest,
+ $row->rev_timestamp,
+ $row2->max_timestamp ) );
+ if ( $fix ) {
+ # ...
+ $maxId = $dbw->selectField(
+ 'revision',
+ 'rev_id',
+ [
+ 'rev_page' => $row->page_id,
+ 'rev_timestamp' => $row2->max_timestamp ] );
+ $this->output( "... updating to revision $maxId\n" );
+ $maxRev = Revision::newFromId( $maxId );
+ $title = Title::makeTitle( $row->page_namespace, $row->page_title );
+ $article = WikiPage::factory( $title );
+ $article->updateRevisionOn( $dbw, $maxRev );
+ }
+ }
+ } else {
+ $this->output( "wtf\n" );
+ }
+ }
+
+ if ( $found ) {
+ $this->output( "Found $found pages with incorrect latest revision.\n" );
+ } else {
+ $this->output( "No pages with incorrect latest revision. Yay!\n" );
+ }
+ if ( !$fix && $found > 0 ) {
+ $this->output( "Run again with --fix to remove these entries automatically.\n" );
+ }
+
+ if ( $fix ) {
+ $dbw->unlockTables( __METHOD__ );
+ }
+ }
+}
+
+$maintClass = Orphans::class;
+require_once RUN_MAINTENANCE_IF_MAIN;
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-05 08:24:36 +0000