maintenance/resetUserTokens.php

   1 <?php
   2 /**
   3  * Reset the user_token for all users on the wiki. Useful if you believe
   4  * that your user table was acidentally leaked to an external source.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  * @file
  22  * @ingroup Maintenance
  23  * @author Daniel Friesen <mediawiki@danielfriesen.name>
  24  * @author Chris Steipp <csteipp@wikimedia.org>
  25  */
  26
  27 require_once __DIR__ . '/Maintenance.php';
  28
  29 /**
  30  * Maintenance script to reset the user_token for all users on the wiki.
  31  *
  32  * @ingroup Maintenance
  33  */
  34 class ResetUserTokens extends Maintenance {
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->mDescription =
  38                         "Reset the user_token of all users on the wiki. Note that this may log some of them out.";
  39                 $this->addOption( 'nowarn', "Hides the 5 seconds warning", false, false );
  40                 $this->addOption(
  41                         'nulls',
  42                         'Only reset tokens that are currently null (string of \x00\'s)',
  43                         false,
  44                         false
  45                 );
  46                 $this->setBatchSize( 1000 );
  47         }
  48
  49         public function execute() {
  50                 $this->nullsOnly = $this->getOption( 'nulls' );
  51
  52                 if ( !$this->getOption( 'nowarn' ) ) {
  53                         if ( $this->nullsOnly ) {
  54                                 $this->output( "The script is about to reset the user_token "
  55                                         . "for USERS WITH NULL TOKENS in the database.\n" );
  56                         } else {
  57                                 $this->output( "The script is about to reset the user_token for ALL USERS in the database.\n" );
  58                                 $this->output( "This may log some of them out and is not necessary unless you believe your\n" );
  59                                 $this->output( "user table has been compromised.\n" );
  60                         }
  61                         $this->output( "\n" );
  62                         $this->output( "Abort with control-c in the next five seconds "
  63                                 . "(skip this countdown with --nowarn) ... " );
  64                         wfCountDown( 5 );
  65                 }
  66
  67                 // We list user by user_id from one of the slave database
  68                 $dbr = $this->getDB( DB_SLAVE );
  69
  70                 $where = array();
  71                 if ( $this->nullsOnly ) {
  72                         // Have to build this by hand, because \ is escaped in helper functions
  73                         $where = array( 'user_token = \'' . str_repeat( '\0', 32 ) . '\'' );
  74                 }
  75
  76                 $maxid = $dbr->selectField( 'user', 'MAX(user_id)', array(), __METHOD__ );
  77
  78                 $min = 0;
  79                 $max = $this->mBatchSize;
  80
  81                 do {
  82                         $result = $dbr->select( 'user',
  83                                 array( 'user_id' ),
  84                                 array_merge(
  85                                         $where,
  86                                         array( 'user_id > ' . $dbr->addQuotes( $min ),
  87                                                 'user_id <= ' . $dbr->addQuotes( $max )
  88                                         )
  89                                 ),
  90                                 __METHOD__
  91                         );
  92
  93                         foreach ( $result as $user ) {
  94                                 $this->updateUser( $user->user_id );
  95                         }
  96
  97                         $min = $max;
  98                         $max = $min + $this->mBatchSize;
  99
 100                         wfWaitForSlaves();
 101                 } while ( $min <= $maxid );
 102         }
 103
 104         private function updateUser( $userid ) {
 105                 $user = User::newFromId( $userid );
 106                 $username = $user->getName();
 107                 $this->output( 'Resetting user_token for "' . $username . '": ' );
 108                 // Change value
 109                 $user->setToken();
 110                 $user->saveSettings();
 111                 $this->output( " OK\n" );
 112         }
 113 }
 114
 115 $maintClass = "ResetUserTokens";
 116 require_once RUN_MAINTENANCE_IF_MAIN;