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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of graze/gigya-client  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license https://github.com/graze/gigya-client/blob/master/LICENSE.md  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @link    https://github.com/graze/gigya-client  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Graze\Gigya\Auth\OAuth2;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Event\BeforeEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Event\ErrorEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Event\RequestEvents;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Event\SubscriberInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class OAuth2Subscriber implements SubscriberInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const AUTH_NAME = 'gigya-oauth2';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var GrantInterface */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $grant;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var string|null */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $name;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param GrantInterface $grant  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string|null    $name  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(GrantInterface $grant, $name = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->grant = $grant;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->name = $name ?: static::AUTH_NAME;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns an array of event names this subscriber wants to listen to.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getEvents()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'before' => ['sign', RequestEvents::SIGN_REQUEST],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'error'  => ['error', RequestEvents::EARLY],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Add the authentication params to the request.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param BeforeEvent $event  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function sign(BeforeEvent $event)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $request = $event->getRequest();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($request->getScheme() == 'https'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            && $request->getConfig()->get('auth') == $this->name | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $token = $this->grant->getToken();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!is_null($token)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $request->addHeader('Authorization', sprintf('OAuth %s', $token->getToken())); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ErrorEvent $event  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    public function error(ErrorEvent $event)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $response = $event->getResponse();  | 
            
            
                                                        
            
                                    
            
            
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                        if ($response && $response->getStatusCode() == 401) { | 
            
            
                                                        
            
                                    
            
            
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                            $request = $event->getRequest();  | 
            
            
                                                        
            
                                    
            
            
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                            if ($request->getScheme() == 'https'  | 
            
            
                                                        
            
                                    
            
            
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                                && $request->getConfig()->get('auth') == $this->name | 
            
            
                                                        
            
                                    
            
            
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                                && !$request->getConfig()->get('retried') | 
            
            
                                                        
            
                                    
            
            
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                            ) { | 
            
            
                                                        
            
                                    
            
            
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                                $token = $this->grant->getToken();  | 
            
            
                                                        
            
                                    
            
            
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                                if (!is_null($token)) { | 
            
            
                                                        
            
                                    
            
            
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                                    $request->getConfig()->set('retried', true); | 
            
            
                                                        
            
                                    
            
            
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                                    $event->intercept($event->getClient()->send($request));  | 
            
            
                                                        
            
                                    
            
            
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                                }  | 
            
            
                                                        
            
                                    
            
            
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                            }  | 
            
            
                                                        
            
                                    
            
            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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