MediaWiki  master
RevisionDeleteUser.php
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1 <?php
26 
36 
46  private static function setUsernameBitfields( $name, $userId, $op, IDatabase $dbw = null ) {
47  if ( !$userId || ( $op !== '|' && $op !== '&' ) ) {
48  return false;
49  }
50  if ( !$dbw instanceof IDatabase ) {
51  $dbw = wfGetDB( DB_PRIMARY );
52  }
53 
54  # To suppress, we OR the current bitfields with RevisionRecord::DELETED_USER
55  # to put a 1 in the username *_deleted bit. To unsuppress we AND the
56  # current bitfields with the inverse of RevisionRecord::DELETED_USER. The
57  # username bit is made to 0 (x & 0 = 0), while others are unchanged (x & 1 = x).
58  # The same goes for the sysop-restricted *_deleted bit.
59  $delUser = RevisionRecord::DELETED_USER | RevisionRecord::DELETED_RESTRICTED;
60  $delAction = LogPage::DELETED_ACTION | RevisionRecord::DELETED_RESTRICTED;
61  if ( $op === '&' ) {
62  $delUser = $dbw->bitNot( $delUser );
63  $delAction = $dbw->bitNot( $delAction );
64  }
65 
66  # Normalize user name
67  $userTitle = Title::makeTitleSafe( NS_USER, $name );
68  $userDbKey = $userTitle->getDBkey();
69 
70  $actorId = $dbw->selectField( 'actor', 'actor_id', [ 'actor_name' => $name ], __METHOD__ );
71  if ( $actorId ) {
72  # Hide name from live edits
73  $dbw->update(
74  'revision',
75  [ self::buildSetBitDeletedField( 'rev_deleted', $op, $delUser, $dbw ) ],
76  [ 'rev_actor' => $actorId ],
77  __METHOD__
78  );
79 
80  # Hide name from deleted edits
81  $dbw->update(
82  'archive',
83  [ self::buildSetBitDeletedField( 'ar_deleted', $op, $delUser, $dbw ) ],
84  [ 'ar_actor' => $actorId ],
85  __METHOD__
86  );
87 
88  # Hide name from logs
89  $dbw->update(
90  'logging',
91  [ self::buildSetBitDeletedField( 'log_deleted', $op, $delUser, $dbw ) ],
92  [ 'log_actor' => $actorId, 'log_type != ' . $dbw->addQuotes( 'suppress' ) ],
93  __METHOD__
94  );
95 
96  # Hide name from RC
97  $dbw->update(
98  'recentchanges',
99  [ self::buildSetBitDeletedField( 'rc_deleted', $op, $delUser, $dbw ) ],
100  [ 'rc_actor' => $actorId ],
101  __METHOD__
102  );
103 
104  # Hide name from live images
105  $dbw->update(
106  'oldimage',
107  [ self::buildSetBitDeletedField( 'oi_deleted', $op, $delUser, $dbw ) ],
108  [ 'oi_actor' => $actorId ],
109  __METHOD__
110  );
111 
112  # Hide name from deleted images
113  $dbw->update(
114  'filearchive',
115  [ self::buildSetBitDeletedField( 'fa_deleted', $op, $delUser, $dbw ) ],
116  [ 'fa_actor' => $actorId ],
117  __METHOD__
118  );
119  }
120 
121  # Hide log entries pointing to the user page
122  $dbw->update(
123  'logging',
124  [ self::buildSetBitDeletedField( 'log_deleted', $op, $delAction, $dbw ) ],
125  [ 'log_namespace' => NS_USER, 'log_title' => $userDbKey,
126  'log_type != ' . $dbw->addQuotes( 'suppress' ) ],
127  __METHOD__
128  );
129 
130  # Hide RC entries pointing to the user page
131  $dbw->update(
132  'recentchanges',
133  [ self::buildSetBitDeletedField( 'rc_deleted', $op, $delAction, $dbw ) ],
134  [ 'rc_namespace' => NS_USER, 'rc_title' => $userDbKey, 'rc_logid > 0' ],
135  __METHOD__
136  );
137 
138  return true;
139  }
140 
141  private static function buildSetBitDeletedField( $field, $op, $value, IDatabase $dbw ) {
142  return $field . ' = ' . ( $op === '&'
143  ? $dbw->bitAnd( $field, $value )
144  : $dbw->bitOr( $field, $value ) );
145  }
146 
153  public static function suppressUserName( $name, $userId, IDatabase $dbw = null ) {
154  return self::setUsernameBitfields( $name, $userId, '|', $dbw );
155  }
156 
163  public static function unsuppressUserName( $name, $userId, IDatabase $dbw = null ) {
164  return self::setUsernameBitfields( $name, $userId, '&', $dbw );
165  }
166 }
const NS_USER
Definition: Defines.php:66
wfGetDB( $db, $groups=[], $wiki=false)
Get a Database object.
const DELETED_ACTION
Definition: LogPage.php:40
Page revision base class.
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)
static makeTitleSafe( $ns, $title, $fragment='', $interwiki='')
Create a new Title from a namespace index and a DB key.
Definition: Title.php:664
Basic database interface for live and lazy-loaded relation database handles.
Definition: IDatabase.php:39
bitOr( $fieldLeft, $fieldRight)
bitAnd( $fieldLeft, $fieldRight)
const DB_PRIMARY
Definition: defines.php:28