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                <?php  | 
            
                            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Invalidate the sessions of certain users on the wiki.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * If you want to invalidate all sessions, use $wgAuthenticationTokenVersion instead.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MediaWiki\MediaWikiServices;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MediaWiki\Session\SessionManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once __DIR__ . '/Maintenance.php';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Invalidate the sessions of certain users on the wiki.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * If you want to invalidate all sessions, use $wgAuthenticationTokenVersion instead.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @ingroup Maintenance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                class InvalidateUserSesssions extends Maintenance { | 
            
            
                                                                        
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                	public function __construct() { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		parent::__construct();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->addDescription(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			'Invalidate the sessions of certain users on the wiki.'  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->addOption( 'user', 'Username', false, true, 'u' );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->addOption( 'file', 'File with one username per line', false, true, 'f' );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->setBatchSize( 1000 );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function execute() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$username = $this->getOption( 'user' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$file = $this->getOption( 'file' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( $username === null && $file === null ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->error( 'Either --user or --file is required', 1 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		} elseif ( $username !== null && $file !== null ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->error( 'Cannot use both --user and --file', 1 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( $username !== null ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$usernames = [ $username ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		} else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$usernames = is_readable( $file ) ?  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				file( $file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES ) : false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			if ( $usernames === false ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$this->error( "Could not open $file", 2 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$i = 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$sessionManager = SessionManager::singleton();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		foreach ( $usernames as $username ) { | 
            
                            
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                			$i++;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$user = User::newFromName( $username );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$sessionManager->invalidateSessionsForUser( $user );  | 
            
                            
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                				if ( $user->getId() ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					$this->output( "Invalidated sessions for user $username\n" );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				} else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					# session invalidation might still work if there is a central identity provider  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					$this->output( "Could not find user $username, tried to invalidate anyway\n" );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			} catch ( Exception $e ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$this->output( "Failed to invalidate sessions for user $username | "  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					. str_replace( [ "\r", "\n" ], ' ', $e->getMessage() ) . "\n" );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			if ( $i % $this->mBatchSize ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$lbFactory->waitForReplication();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $maintClass = "InvalidateUserSesssions";  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                require_once RUN_MAINTENANCE_IF_MAIN;  | 
            
            
                                                        
            
                                    
            
            
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The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.