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->addDescription(
  38                         'Reset the user_token of all users on the wiki. Note that this may log some of them out.'
  39                 );
  40                 $this->addOption( 'nowarn', "Hides the 5 seconds warning", false, false );
  41                 $this->addOption(
  42                         'nulls',
  43                         'Only reset tokens that are currently null (string of \x00\'s)',
  44                         false,
  45                         false
  46                 );
  47                 $this->setBatchSize( 1000 );
  48         }
  49
  50         public function execute() {
  51                 $this->nullsOnly = $this->getOption( 'nulls' );
  52
  53                 if ( !$this->getOption( 'nowarn' ) ) {
  54                         if ( $this->nullsOnly ) {
  55                                 $this->output( "The script is about to reset the user_token "
  56                                         . "for USERS WITH NULL TOKENS in the database.\n" );
  57                         } else {
  58                                 $this->output( "The script is about to reset the user_token for ALL USERS in the database.\n" );
  59                                 $this->output( "This may log some of them out and is not necessary unless you believe your\n" );
  60                                 $this->output( "user table has been compromised.\n" );
  61                         }
  62                         $this->output( "\n" );
  63                         $this->output( "Abort with control-c in the next five seconds "
  64                                 . "(skip this countdown with --nowarn) ... " );
  65                         wfCountDown( 5 );
  66                 }
  67
  68                 // We list user by user_id from one of the slave database
  69                 $dbr = $this->getDB( DB_SLAVE );
  70
  71                 $where = array();
  72                 if ( $this->nullsOnly ) {
  73                         // Have to build this by hand, because \ is escaped in helper functions
  74                         $where = array( 'user_token = \'' . str_repeat( '\0', 32 ) . '\'' );
  75                 }
  76
  77                 $maxid = $dbr->selectField( 'user', 'MAX(user_id)', array(), __METHOD__ );
  78
  79                 $min = 0;
  80                 $max = $this->mBatchSize;
  81
  82                 do {
  83                         $result = $dbr->select( 'user',
  84                                 array( 'user_id' ),
  85                                 array_merge(
  86                                         $where,
  87                                         array( 'user_id > ' . $dbr->addQuotes( $min ),
  88                                                 'user_id <= ' . $dbr->addQuotes( $max )
  89                                         )
  90                                 ),
  91                                 __METHOD__
  92                         );
  93
  94                         foreach ( $result as $user ) {
  95                                 $this->updateUser( $user->user_id );
  96                         }
  97
  98                         $min = $max;
  99                         $max = $min + $this->mBatchSize;
 100
 101                         wfWaitForSlaves();
 102                 } while ( $min <= $maxid );
 103         }
 104
 105         private function updateUser( $userid ) {
 106                 $user = User::newFromId( $userid );
 107                 $username = $user->getName();
 108                 $this->output( 'Resetting user_token for "' . $username . '": ' );
 109                 // Change value
 110                 $user->setToken();
 111                 $user->saveSettings();
 112                 $this->output( " OK\n" );
 113         }
 114 }
 115
 116 $maintClass = "ResetUserTokens";
 117 require_once RUN_MAINTENANCE_IF_MAIN;