197 lines
6.4 KiB
PHP
197 lines
6.4 KiB
PHP
<?php
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/**
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* Remove unused user accounts from the database
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* An unused account is one which has made no edits
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Maintenance
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* @author Rob Church <robchur@gmail.com>
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*/
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use MediaWiki\MediaWikiServices;
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require_once __DIR__ . '/Maintenance.php';
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/**
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* Maintenance script that removes unused user accounts from the database.
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*
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* @ingroup Maintenance
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*/
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class RemoveUnusedAccounts extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->addOption( 'delete', 'Actually delete the account' );
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$this->addOption( 'ignore-groups', 'List of comma-separated groups to exclude', false, true );
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$this->addOption( 'ignore-touched', 'Skip accounts touched in last N days', false, true );
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}
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public function execute() {
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$services = MediaWikiServices::getInstance();
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$userFactory = $services->getUserFactory();
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$userGroupManager = $services->getUserGroupManager();
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$this->output( "Remove unused accounts\n\n" );
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# Do an initial scan for inactive accounts and report the result
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$this->output( "Checking for unused user accounts...\n" );
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$delUser = [];
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$delActor = [];
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$dbr = $this->getDB( DB_REPLICA );
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$res = $dbr->select(
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[ 'user', 'actor' ],
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[ 'user_id', 'user_name', 'user_touched', 'actor_id' ],
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'',
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__METHOD__,
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[],
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[ 'actor' => [ 'LEFT JOIN', 'user_id = actor_user' ] ]
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);
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if ( $this->hasOption( 'ignore-groups' ) ) {
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$excludedGroups = explode( ',', $this->getOption( 'ignore-groups' ) );
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} else {
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$excludedGroups = [];
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}
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$touched = $this->getOption( 'ignore-touched', "1" );
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if ( !ctype_digit( $touched ) ) {
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$this->fatalError( "Please put a valid positive integer on the --ignore-touched parameter." );
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}
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$touchedSeconds = 86400 * $touched;
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foreach ( $res as $row ) {
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# Check the account, but ignore it if it's within a $excludedGroups
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# group or if it's touched within the $touchedSeconds seconds.
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$instance = $userFactory->newFromId( $row->user_id );
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if ( count(
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array_intersect( $userGroupManager->getUserEffectiveGroups( $instance ), $excludedGroups ) ) == 0
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&& $this->isInactiveAccount( $row->user_id, $row->actor_id ?? null, true )
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&& wfTimestamp( TS_UNIX, $row->user_touched ) < wfTimestamp( TS_UNIX, time() - $touchedSeconds
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)
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) {
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# Inactive; print out the name and flag it
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$delUser[] = $row->user_id;
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if ( isset( $row->actor_id ) && $row->actor_id ) {
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$delActor[] = $row->actor_id;
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}
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$this->output( $row->user_name . "\n" );
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}
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}
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$count = count( $delUser );
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$this->output( "...found {$count}.\n" );
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# If required, go back and delete each marked account
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if ( $count > 0 && $this->hasOption( 'delete' ) ) {
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$this->output( "\nDeleting unused accounts..." );
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$dbw = $this->getDB( DB_PRIMARY );
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$dbw->delete( 'user', [ 'user_id' => $delUser ], __METHOD__ );
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# Keep actor rows referenced from ipblocks
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$keep = $dbw->selectFieldValues(
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'ipblocks', 'ipb_by_actor', [ 'ipb_by_actor' => $delActor ], __METHOD__
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);
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$del = array_diff( $delActor, $keep );
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if ( $del ) {
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$dbw->delete( 'actor', [ 'actor_id' => $del ], __METHOD__ );
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}
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if ( $keep ) {
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$dbw->update( 'actor', [ 'actor_user' => null ], [ 'actor_id' => $keep ], __METHOD__ );
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}
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$dbw->delete( 'user_groups', [ 'ug_user' => $delUser ], __METHOD__ );
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$dbw->delete( 'user_former_groups', [ 'ufg_user' => $delUser ], __METHOD__ );
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$dbw->delete( 'user_properties', [ 'up_user' => $delUser ], __METHOD__ );
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$dbw->delete( 'logging', [ 'log_actor' => $delActor ], __METHOD__ );
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$dbw->delete( 'recentchanges', [ 'rc_actor' => $delActor ], __METHOD__ );
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$this->output( "done.\n" );
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# Update the site_stats.ss_users field
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$users = $dbw->selectField( 'user', 'COUNT(*)', [], __METHOD__ );
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$dbw->update(
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'site_stats',
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[ 'ss_users' => $users ],
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[ 'ss_row_id' => 1 ],
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__METHOD__
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);
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} elseif ( $count > 0 ) {
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$this->output( "\nRun the script again with --delete to remove them from the database.\n" );
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}
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$this->output( "\n" );
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}
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/**
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* Could the specified user account be deemed inactive?
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* (No edits, no deleted edits, no log entries, no current/old uploads)
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*
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* @param int $id User's ID
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* @param int|null $actor User's actor ID
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* @param bool $primary Perform checking on the primary DB
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* @return bool
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*/
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private function isInactiveAccount( $id, $actor, $primary = false ) {
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if ( $actor === null ) {
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// There's no longer a way for a user to be active in any of
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// these tables without having an actor ID. The only way to link
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// to a user row is via an actor row.
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return true;
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}
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$dbo = $this->getDB( $primary ? DB_PRIMARY : DB_REPLICA );
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$checks = [
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'archive' => 'ar',
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'image' => 'img',
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'oldimage' => 'oi',
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'filearchive' => 'fa'
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// re-add when actor migration is complete
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// 'revision' => 'rev'
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];
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$count = 0;
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$this->beginTransaction( $dbo, __METHOD__ );
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foreach ( $checks as $table => $prefix ) {
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$count += (int)$dbo->selectField(
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$table,
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'COUNT(*)',
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[ "{$prefix}_actor" => $actor ],
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__METHOD__
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);
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}
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// Delete this special case when the actor migration is complete
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$user = User::newFromAnyId( $id, null, $actor );
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$actorQuery = ActorMigration::newMigration()->getWhere( $dbo, 'rev_user', $user );
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$count += (int)$dbo->selectField(
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[ 'revision' ] + $actorQuery['tables'],
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'COUNT(*)',
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$actorQuery['conds'],
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__METHOD__,
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[],
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$actorQuery['joins']
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);
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$count += (int)$dbo->selectField(
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[ 'logging' ],
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'COUNT(*)',
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[
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'log_actor' => $actor,
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'log_type != ' . $dbo->addQuotes( 'newusers' )
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],
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__METHOD__
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);
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$this->commitTransaction( $dbo, __METHOD__ );
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return $count == 0;
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}
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}
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$maintClass = RemoveUnusedAccounts::class;
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require_once RUN_MAINTENANCE_IF_MAIN;
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