MediaWiki master
RevisionDeleteUser.php
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1<?php
28
38
48 private static function setUsernameBitfields( $name, $userId, $op, IDatabase $dbw = null ) {
49 if ( !$userId || ( $op !== '|' && $op !== '&' ) ) {
50 return false;
51 }
52 if ( !$dbw instanceof IDatabase ) {
53 $dbw = MediaWikiServices::getInstance()->getConnectionProvider()->getPrimaryDatabase();
54 }
55
56 # To suppress, we OR the current bitfields with RevisionRecord::DELETED_USER
57 # to put a 1 in the username *_deleted bit. To unsuppress we AND the
58 # current bitfields with the inverse of RevisionRecord::DELETED_USER. The
59 # username bit is made to 0 (x & 0 = 0), while others are unchanged (x & 1 = x).
60 # The same goes for the sysop-restricted *_deleted bit.
61 $delUser = RevisionRecord::DELETED_USER | RevisionRecord::DELETED_RESTRICTED;
62 $delAction = LogPage::DELETED_ACTION | RevisionRecord::DELETED_RESTRICTED;
63 if ( $op === '&' ) {
64 $delUser = $dbw->bitNot( $delUser );
65 $delAction = $dbw->bitNot( $delAction );
66 }
67
68 # Normalize user name
69 $userTitle = Title::makeTitleSafe( NS_USER, $name );
70 $userDbKey = $userTitle->getDBkey();
71
72 $actorId = $dbw->newSelectQueryBuilder()
73 ->select( 'actor_id' )
74 ->from( 'actor' )
75 ->where( [ 'actor_name' => $name ] )
76 ->caller( __METHOD__ )->fetchField();
77 if ( $actorId ) {
78 # Hide name from live edits
79 $dbw->newUpdateQueryBuilder()
80 ->update( 'revision' )
81 ->set( [ self::buildSetBitDeletedField( 'rev_deleted', $op, $delUser, $dbw ) ] )
82 ->where( [ 'rev_actor' => $actorId ] )
83 ->caller( __METHOD__ )->execute();
84
85 # Hide name from deleted edits
86 $dbw->newUpdateQueryBuilder()
87 ->update( 'archive' )
88 ->set( [ self::buildSetBitDeletedField( 'ar_deleted', $op, $delUser, $dbw ) ] )
89 ->where( [ 'ar_actor' => $actorId ] )
90 ->caller( __METHOD__ )->execute();
91
92 # Hide name from logs
93 $dbw->newUpdateQueryBuilder()
94 ->update( 'logging' )
95 ->set( [ self::buildSetBitDeletedField( 'log_deleted', $op, $delUser, $dbw ) ] )
96 ->where( [ 'log_actor' => $actorId, $dbw->expr( 'log_type', '!=', 'suppress' ) ] )
97 ->caller( __METHOD__ )->execute();
98
99 # Hide name from RC
100 $dbw->newUpdateQueryBuilder()
101 ->update( 'recentchanges' )
102 ->set( [ self::buildSetBitDeletedField( 'rc_deleted', $op, $delUser, $dbw ) ] )
103 ->where( [ 'rc_actor' => $actorId ] )
104 ->caller( __METHOD__ )->execute();
105
106 # Hide name from live images
107 $dbw->newUpdateQueryBuilder()
108 ->update( 'oldimage' )
109 ->set( [ self::buildSetBitDeletedField( 'oi_deleted', $op, $delUser, $dbw ) ] )
110 ->where( [ 'oi_actor' => $actorId ] )
111 ->caller( __METHOD__ )->execute();
112
113 # Hide name from deleted images
114 $dbw->newUpdateQueryBuilder()
115 ->update( 'filearchive' )
116 ->set( [ self::buildSetBitDeletedField( 'fa_deleted', $op, $delUser, $dbw ) ] )
117 ->where( [ 'fa_actor' => $actorId ] )
118 ->caller( __METHOD__ )->execute();
119 }
120
121 # Hide log entries pointing to the user page
122 $dbw->newUpdateQueryBuilder()
123 ->update( 'logging' )
124 ->set( [ self::buildSetBitDeletedField( 'log_deleted', $op, $delAction, $dbw ) ] )
125 ->where( [
126 'log_namespace' => NS_USER,
127 'log_title' => $userDbKey,
128 $dbw->expr( 'log_type', '!=', 'suppress' )
129 ] )
130 ->caller( __METHOD__ )->execute();
131
132 # Hide RC entries pointing to the user page
133 $dbw->newUpdateQueryBuilder()
134 ->update( 'recentchanges' )
135 ->set( [ self::buildSetBitDeletedField( 'rc_deleted', $op, $delAction, $dbw ) ] )
136 ->where( [ 'rc_namespace' => NS_USER, 'rc_title' => $userDbKey, 'rc_logid > 0' ] )
137 ->caller( __METHOD__ )->execute();
138
139 return true;
140 }
141
142 private static function buildSetBitDeletedField( $field, $op, $value, IDatabase $dbw ) {
143 return $field . ' = ' . ( $op === '&'
144 ? $dbw->bitAnd( $field, $value )
145 : $dbw->bitOr( $field, $value ) );
146 }
147
154 public static function suppressUserName( $name, $userId, IDatabase $dbw = null ) {
155 return self::setUsernameBitfields( $name, $userId, '|', $dbw );
156 }
157
164 public static function unsuppressUserName( $name, $userId, IDatabase $dbw = null ) {
165 return self::setUsernameBitfields( $name, $userId, '&', $dbw );
166 }
167}
const NS_USER
Definition Defines.php:66
Service locator for MediaWiki core services.
Page revision base class.
Represents a title within MediaWiki.
Definition Title.php:78
Backend functions for suppressing and unsuppressing all references to a given user,...
static suppressUserName( $name, $userId, IDatabase $dbw=null)
static unsuppressUserName( $name, $userId, IDatabase $dbw=null)
Basic database interface for live and lazy-loaded relation database handles.
Definition IDatabase.php:36
bitOr( $fieldLeft, $fieldRight)
bitAnd( $fieldLeft, $fieldRight)