MediaWiki  REL1_22
RevisionDeleteUser.php
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00001 <?php
00032 class RevisionDeleteUser {
00033 
00042     private static function setUsernameBitfields( $name, $userId, $op, $dbw ) {
00043         if ( !$userId || ( $op !== '|' && $op !== '&' ) ) {
00044             return false; // sanity check
00045         }
00046         if ( !$dbw instanceof DatabaseBase ) {
00047             $dbw = wfGetDB( DB_MASTER );
00048         }
00049 
00050         # To suppress, we OR the current bitfields with Revision::DELETED_USER
00051         # to put a 1 in the username *_deleted bit. To unsuppress we AND the
00052         # current bitfields with the inverse of Revision::DELETED_USER. The
00053         # username bit is made to 0 (x & 0 = 0), while others are unchanged (x & 1 = x).
00054         # The same goes for the sysop-restricted *_deleted bit.
00055         $delUser = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
00056         $delAction = LogPage::DELETED_ACTION | Revision::DELETED_RESTRICTED;
00057         if ( $op == '&' ) {
00058             $delUser = "~{$delUser}";
00059             $delAction = "~{$delAction}";
00060         }
00061 
00062         # Normalize user name
00063         $userTitle = Title::makeTitleSafe( NS_USER, $name );
00064         $userDbKey = $userTitle->getDBkey();
00065 
00066         # Hide name from live edits
00067         $dbw->update(
00068             'revision',
00069             array( "rev_deleted = rev_deleted $op $delUser" ),
00070             array( 'rev_user' => $userId ),
00071             __METHOD__ );
00072 
00073         # Hide name from deleted edits
00074         $dbw->update(
00075             'archive',
00076             array( "ar_deleted = ar_deleted $op $delUser" ),
00077             array( 'ar_user_text' => $name ),
00078             __METHOD__
00079         );
00080 
00081         # Hide name from logs
00082         $dbw->update(
00083             'logging',
00084             array( "log_deleted = log_deleted $op $delUser" ),
00085             array( 'log_user' => $userId, "log_type != 'suppress'" ),
00086             __METHOD__
00087         );
00088         $dbw->update(
00089             'logging',
00090             array( "log_deleted = log_deleted $op $delAction" ),
00091             array( 'log_namespace' => NS_USER, 'log_title' => $userDbKey,
00092                 "log_type != 'suppress'" ),
00093             __METHOD__
00094         );
00095 
00096         # Hide name from RC
00097         $dbw->update(
00098             'recentchanges',
00099             array( "rc_deleted = rc_deleted $op $delUser" ),
00100             array( 'rc_user_text' => $name ),
00101             __METHOD__
00102         );
00103         $dbw->update(
00104             'recentchanges',
00105             array( "rc_deleted = rc_deleted $op $delAction" ),
00106             array( 'rc_namespace' => NS_USER, 'rc_title' => $userDbKey, 'rc_logid > 0' ),
00107             __METHOD__
00108         );
00109 
00110         # Hide name from live images
00111         $dbw->update(
00112             'oldimage',
00113             array( "oi_deleted = oi_deleted $op $delUser" ),
00114             array( 'oi_user_text' => $name ),
00115             __METHOD__
00116         );
00117 
00118         # Hide name from deleted images
00119         $dbw->update(
00120             'filearchive',
00121             array( "fa_deleted = fa_deleted $op $delUser" ),
00122             array( 'fa_user_text' => $name ),
00123             __METHOD__
00124         );
00125         # Done!
00126         return true;
00127     }
00128 
00129     public static function suppressUserName( $name, $userId, $dbw = null ) {
00130         return self::setUsernameBitfields( $name, $userId, '|', $dbw );
00131     }
00132 
00133     public static function unsuppressUserName( $name, $userId, $dbw = null ) {
00134         return self::setUsernameBitfields( $name, $userId, '&', $dbw );
00135     }
00136 }