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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Aoe\Varnish\TYPO3\Hooks;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /***************************************************************  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  Copyright notice  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  (c) 2018 AOE GmbH <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  All rights reserved  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  This script is part of the TYPO3 project. The TYPO3 project is  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  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 3 of the License, or  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  (at your option) any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  The GNU General Public License can be found at  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  http://www.gnu.org/copyleft/gpl.html.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  This script 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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                 *  This copyright notice MUST APPEAR in all copies of the script!  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 ***************************************************************/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Aoe\Varnish\System\Varnish;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Http\Message\ServerRequestInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TYPO3\CMS\Core\Http\Response;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TYPO3\CMS\Core\Utility\GeneralUtility;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TYPO3\CMS\Extbase\Object\ObjectManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class BackendAjaxHook extends AbstractHook  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function banAll(ServerRequestInterface $request): Response  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $varnish = $this->getVarnish();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $varnish->banAll();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($this->isAuthorizedBackendSession()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->getBackendUser()->writelog(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                3,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                1,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                0,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                0,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'User %s has cleared the Varnish cache',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                [$this->getBackendUser()->user['username']]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // We need to return a response to satisfy the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // TYPO3\CMS\Backend\Http\RouteDispatcher::dispatch()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // don't like the solution, but haven't come up with something better yet.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new Response();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function getVarnish(): Varnish  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objectManager = GeneralUtility::makeInstance(ObjectManager::class);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->varnish = $objectManager->get(Varnish::class);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->varnish;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Checks if a user is logged in and the session is active.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function isAuthorizedBackendSession()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $backendUser = $this->getBackendUser();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $backendUser !== null && $backendUser instanceof BackendUserAuthentication && isset($backendUser->user['uid']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return BackendUserAuthentication|null  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    protected function getBackendUser()  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        return isset($GLOBALS['BE_USER']) ? $GLOBALS['BE_USER'] : null;  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.