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1
1<?php
2/**
3 * Erase a page record from the database
4 * Irreversible (can't use standard undelete) and does not update link tables
5 *
6 * @license GPL-2.0-or-later
7 * @file
8 * @ingroup Maintenance
9 * @author Rob Church <robchur@gmail.com>
10 */
11
12// @codeCoverageIgnoreStart
13require_once __DIR__ . '/Maintenance.php';
14// @codeCoverageIgnoreEnd
15
16use MediaWiki\Deferred\SiteStatsUpdate;
17use MediaWiki\Maintenance\Maintenance;
18use MediaWiki\Title\Title;
19
20/**
21 * Maintenance script that erases a page record from the database.
22 *
23 * @ingroup Maintenance
24 */
25class NukePage extends Maintenance {
26    public function __construct() {
27        parent::__construct();
28        $this->addDescription( 'Remove a page record from the database' );
29        $this->addOption( 'delete', "Actually delete the page" );
30        $this->addArg( 'title', 'Title to delete' );
31    }
32
33    public function execute() {
34        $name = $this->getArg( 0 );
35        $delete = $this->hasOption( 'delete' );
36
37        $dbw = $this->getPrimaryDB();
38        $this->beginTransaction( $dbw, __METHOD__ );
39
40        # Get page ID
41        $this->output( "Searching for \"$name\"..." );
42        $title = Title::newFromText( $name );
43        if ( $title && $title->exists() ) {
44            $id = $title->getArticleID();
45            $real = $title->getPrefixedText();
46            $isGoodArticle = $title->isContentPage();
47            $this->output( "found \"$real\" with ID $id.\n" );
48
49            # Get corresponding revisions
50            $this->output( "Searching for revisions..." );
51
52            $revs = $dbw->newSelectQueryBuilder()
53                ->select( 'rev_id' )
54                ->from( 'revision' )
55                ->where( [ 'rev_page' => $id ] )
56                ->caller( __METHOD__ )->fetchFieldValues();
57            $count = count( $revs );
58            $this->output( "found $count.\n" );
59
60            # Delete the page record and associated recent changes entries
61            if ( $delete ) {
62                $this->output( "Deleting page record..." );
63                $dbw->newDeleteQueryBuilder()
64                    ->deleteFrom( 'page' )
65                    ->where( [ 'page_id' => $id ] )
66                    ->caller( __METHOD__ )->execute();
67                $this->output( "done.\n" );
68                $this->output( "Cleaning up recent changes..." );
69                $dbw->newDeleteQueryBuilder()
70                    ->deleteFrom( 'recentchanges' )
71                    ->where( [ 'rc_cur_id' => $id ] )
72                    ->caller( __METHOD__ )->execute();
73                $this->output( "done.\n" );
74            }
75
76            $this->commitTransaction( $dbw, __METHOD__ );
77
78            # Delete revisions as appropriate
79            if ( $delete && $count ) {
80                $this->output( "Deleting revisions..." );
81                $this->deleteRevisions( $revs );
82                $this->output( "done.\n" );
83                $this->purgeRedundantText( true );
84            }
85
86            # Update stats as appropriate
87            if ( $delete ) {
88                $this->output( "Updating site stats..." );
89                // if it was good, decrement that too
90                $ga = $isGoodArticle ? -1 : 0;
91                $stats = SiteStatsUpdate::factory( [
92                    'edits' => -$count,
93                    'articles' => $ga,
94                    'pages' => -1
95                ] );
96                $stats->doUpdate();
97                $this->output( "done.\n" );
98            }
99        } else {
100            $this->output( "not found in database.\n" );
101            $this->commitTransaction( $dbw, __METHOD__ );
102        }
103    }
104
105    public function deleteRevisions( array $ids ) {
106        $dbw = $this->getPrimaryDB();
107        $this->beginTransaction( $dbw, __METHOD__ );
108
109        $dbw->newDeleteQueryBuilder()
110            ->deleteFrom( 'revision' )
111            ->where( [ 'rev_id' => $ids ] )
112            ->caller( __METHOD__ )->execute();
113
114        $this->commitTransaction( $dbw, __METHOD__ );
115    }
116}
117
118// @codeCoverageIgnoreStart
119$maintClass = NukePage::class;
120require_once RUN_MAINTENANCE_IF_MAIN;
121// @codeCoverageIgnoreEnd