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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace SocialiteProviders\Manager\OAuth1;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SocialiteProviders\Manager\SocialiteWasCalled;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\HttpFoundation\RedirectResponse;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                abstract class AbstractProvider extends \Laravel\Socialite\One\AbstractProvider  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Indicates if the session state should be utilized.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $stateless = true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $credentialsResponseBody;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function serviceContainerKey($providerName)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return SocialiteWasCalled::SERVICE_CONTAINER_PREFIX.$providerName;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Config $config  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return $this  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function config(Config $config)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $config = $config->get();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->clientId = $config['client_id'];  | 
            
                            
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                        $this->redirectUrl = $config['redirect'];  | 
            
                            
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                        $this->clientSecret = $config['client_secret'];  | 
            
                            
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                        return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function user()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!$this->hasNecessaryVerifier()) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new \InvalidArgumentException('Invalid request. Missing OAuth verifier.'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $token = $this->getToken();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $tokenCredentials = $token['tokenCredentials'];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $user = $this->mapUserToObject((array) $this->server->getUserDetails($tokenCredentials));  | 
            
                            
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                        $user->setToken($tokenCredentials->getIdentifier(), $tokenCredentials->getSecret());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if ($user instanceof User) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            parse_str($token['credentialsResponseBody'], $credentialsResponseBody);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if (!$credentialsResponseBody || !is_array($credentialsResponseBody)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                throw new CredentialsException('Unable to parse token credentials response.'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $user->setAccessTokenResponseBody($credentialsResponseBody);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $user;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Redirect the user to the authentication page for the provider.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return RedirectResponse  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function redirect()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$this->isStateless()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->request->getSession()->set(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'oauth.temp', $temp = $this->server->getTemporaryCredentials()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $temp = $this->server->getTemporaryCredentials();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            setcookie('oauth_temp', serialize($temp)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new RedirectResponse($this->server->getAuthorizationUrl($temp));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Get the token credentials for the request.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \League\OAuth1\Client\Credentials\TokenCredentials  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function getToken()  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$this->isStateless()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $temp = $this->request->getSession()->get('oauth.temp'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $this->server->getTokenCredentials(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $temp, $this->request->get('oauth_token'), $this->request->get('oauth_verifier') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $temp = unserialize($_COOKIE['oauth_temp']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $this->server->getTokenCredentials(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $temp, $this->request->get('oauth_token'), $this->request->get('oauth_verifier') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Indicates that the provider should operate as stateless.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return $this  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function stateless()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->stateless = true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Determine if the provider is operating as stateless.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function isStateless()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (defined('SOCIALITEPROVIDERS_STATELESS')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->stateless;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                    public static function additionalConfigKeys()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                        return [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: