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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Stevenmaguire\OAuth2\Client\Tool;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Exception\BadResponseException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Psr7\Uri;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use InvalidArgumentException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Http\Message\RequestInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Http\Message\ResponseInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                trait ProviderRedirectTrait  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Maximum number of times to follow provider initiated redirects  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var integer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $redirectLimit = 2;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Retrieves a response for a given request and retrieves subsequent  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * responses, with authorization headers, if a redirect is detected.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  RequestInterface $request  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return ResponseInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws BadResponseException  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    protected function followRequestRedirects(RequestInterface $request)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $response = null;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $attempts = 0;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        while ($attempts < $this->redirectLimit) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $attempts++;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $response = $this->getHttpClient()->send($request, [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'allow_redirects' => false  | 
            
            
                                                                        
                            
            
                                    
            
            
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                             8                          | 
                
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                            ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if ($this->isRedirect($response)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $redirectUrl = new Uri($response->getHeader('Location')[0]); | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $request = $request->withUri($redirectUrl);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            } else { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                break;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $response;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns the HTTP client instance.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return GuzzleHttp\ClientInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    abstract public function getHttpClient();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Retrieves current redirect limit.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return integer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getRedirectLimit()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->redirectLimit;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Determines if a given response is a redirect.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  ResponseInterface  $response  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return boolean  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function isRedirect(ResponseInterface $response)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $statusCode = $response->getStatusCode();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $statusCode > 300 && $statusCode < 400 && $response->hasHeader('Location'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Sends a request instance and returns a response instance.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  RequestInterface $request  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return ResponseInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function sendRequest(RequestInterface $request)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $response = $this->followRequestRedirects($request);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } catch (BadResponseException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $response = $e->getResponse();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $response;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Updates the redirect limit.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param integer $limit  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return League\OAuth2\Client\Provider\AbstractProvider  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws InvalidArgumentException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setRedirectLimit($limit)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!is_int($limit)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new InvalidArgumentException('redirectLimit must be an integer.'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($limit < 1) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new InvalidArgumentException('redirectLimit must be greater than or equal to one.'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->redirectLimit = $limit;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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