maintenance/removeUnusedAccounts.php

   1 <?php
   2 /**
   3  * Remove unused user accounts from the database
   4  * An unused account is one which has made no edits
   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  * @ingroup Maintenance
  22  * @author Rob Church <robchur@gmail.com>
  23  */
  24
  25 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  26
  27 class RemoveUnusedAccounts extends Maintenance {
  28         public function __construct() {
  29                 parent::__construct();
  30                 $this->addOption( 'delete', 'Actually delete the account' );
  31                 $this->addOption( 'ignore-groups', 'List of comma-separated groups to exclude', false, true );
  32                 $this->addOption( 'ignore-touched', 'Skip accounts touched in last N days', false, true );
  33         }
  34
  35         public function execute() {
  36
  37                 $this->output( "Remove unused accounts\n\n" );
  38
  39                 # Do an initial scan for inactive accounts and report the result
  40                 $this->output( "Checking for unused user accounts...\n" );
  41                 $del = array();
  42                 $dbr = wfGetDB( DB_SLAVE );
  43                 $res = $dbr->select( 'user', array( 'user_id', 'user_name', 'user_touched' ), '', __METHOD__ );
  44                 if ( $this->hasOption( 'ignore-groups' ) ) {
  45                         $excludedGroups = explode( ',', $this->getOption( 'ignore-groups' ) );
  46                 } else {
  47                         $excludedGroups = array();
  48                 }
  49                 $touched = $this->getOption( 'ignore-touched', "1" );
  50                 if ( !ctype_digit( $touched ) ) {
  51                         $this->error( "Please put a valid positive integer on the --ignore-touched parameter.", true );
  52                 }
  53                 $touchedSeconds = 86400 * $touched;
  54                 foreach ( $res as $row ) {
  55                         # Check the account, but ignore it if it's within a $excludedGroups group or if it's touched within the $touchedSeconds seconds.
  56                         $instance = User::newFromId( $row->user_id );
  57                         if ( count( array_intersect( $instance->getEffectiveGroups(), $excludedGroups ) ) == 0
  58                                 && $this->isInactiveAccount( $row->user_id, true )
  59                                 && wfTimestamp( TS_UNIX, $row->user_touched ) < wfTimestamp( TS_UNIX, time() - $touchedSeconds )
  60                                 ) {
  61                                 # Inactive; print out the name and flag it
  62                                 $del[] = $row->user_id;
  63                                 $this->output( $row->user_name . "\n" );
  64                         }
  65                 }
  66                 $count = count( $del );
  67                 $this->output( "...found {$count}.\n" );
  68
  69                 # If required, go back and delete each marked account
  70                 if ( $count > 0 && $this->hasOption( 'delete' ) ) {
  71                         $this->output( "\nDeleting inactive accounts..." );
  72                         $dbw = wfGetDB( DB_MASTER );
  73                         $dbw->delete( 'user', array( 'user_id' => $del ), __METHOD__ );
  74                         $this->output( "done.\n" );
  75                         # Update the site_stats.ss_users field
  76                         $users = $dbw->selectField( 'user', 'COUNT(*)', array(), __METHOD__ );
  77                         $dbw->update( 'site_stats', array( 'ss_users' => $users ), array( 'ss_row_id' => 1 ), __METHOD__ );
  78                 } elseif ( $count > 0 ) {
  79                         $this->output( "\nRun the script again with --delete to remove them from the database.\n" );
  80                 }
  81                 $this->output( "\n" );
  82         }
  83
  84         /**
  85          * Could the specified user account be deemed inactive?
  86          * (No edits, no deleted edits, no log entries, no current/old uploads)
  87          *
  88          * @param $id User's ID
  89          * @param $master Perform checking on the master
  90          * @return bool
  91          */
  92         private function isInactiveAccount( $id, $master = false ) {
  93                 $dbo = wfGetDB( $master ? DB_MASTER : DB_SLAVE );
  94                 $checks = array( 'revision' => 'rev', 'archive' => 'ar', 'logging' => 'log',
  95                                                  'image' => 'img', 'oldimage' => 'oi' );
  96                 $count = 0;
  97
  98                 $dbo->begin();
  99                 foreach ( $checks as $table => $fprefix ) {
 100                         $conds = array( $fprefix . '_user' => $id );
 101                         $count += (int)$dbo->selectField( $table, 'COUNT(*)', $conds, __METHOD__ );
 102                 }
 103                 $dbo->commit();
 104
 105                 return $count == 0;
 106         }
 107 }
 108
 109 $maintClass = "RemoveUnusedAccounts";
 110 require_once( DO_MAINTENANCE );