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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Created by PhpStorm.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * User: Alexandre  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Date: 18/02/2018  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Time: 18:08  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OAuth2\Flows;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Credentials\AuthorizationCodeInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Endpoints\AuthorizationEndpoint;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Endpoints\TokenEndpoint;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Exceptions\OAuthException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\GrantTypes\AbstractGrantType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //use OAuth2\Parameters\CodeParameterHandler;  | 
            
                            
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                //use OAuth2\Parameters\ParameterHandlerInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Storages\AccessTokenStorageInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Storages\AuthorizationCodeStorageInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OAuth2\Storages\RefreshTokenStorageInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class AuthorizationCodeFlow extends AbstractGrantType implements FlowInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $authorizationCodeStorage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /* *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var ParameterHandlerInterface[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //    protected $accessTokenRequestParameters = [];  | 
            
                            
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                    public function __construct(AuthorizationCodeStorageInterface $authorizationCodeStorage,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                AccessTokenStorageInterface $accessTokenStorage,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                RefreshTokenStorageInterface $refreshTokenStorage)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::__construct($accessTokenStorage, $refreshTokenStorage);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->authorizationCodeStorage = $authorizationCodeStorage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //        $this->accessTokenRequestParameters = [  | 
            
                            
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                //            'code' => new CodeParameterHandler()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function getResponseTypes(): array  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return ['code'];  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function handleAuthorizationRequest(AuthorizationEndpoint $authorizationEndpoint, array $requestData): array  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $authorizationCode = $this->authorizationCodeStorage->create(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            implode(' ', $authorizationEndpoint->getScopes()), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authorizationEndpoint->getClient()->getIdentifier(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authorizationEndpoint->getResourceOwner()->getIdentifier(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $requestData['scope'] ?? null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $requestData['redirect_uri'] ?? null  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->authorizationCodeStorage->save($authorizationCode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return ['code' => $authorizationCode->getCode()];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //        $authorizationCode = $this->createAuthorizationCode($authorizationEndpoint);  | 
            
                            
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                //        return $this->saveAndGetResult($authorizationCode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /*  | 
            
                            
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                    protected function createAuthorizationCode(AuthorizationEndpoint $authorizationEndpoint)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $this->authorizationCodeStorage->create(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            implode(' ', $authorizationEndpoint->getScopes()), | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $authorizationEndpoint->getClient()->getIdentifier(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authorizationEndpoint->getResourceOwner()->getIdentifier(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $requestData['scope'] ?? null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $requestData['redirect_uri'] ?? null  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function saveAndGetResult(AuthorizationCodeInterface $authorizationCode)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->authorizationCodeStorage->save($authorizationCode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return ['code' => $authorizationCode->getCode()];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function getDefaultResponseMode(): string  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return 'query';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function getUnsupportedResponseModes(): array  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function getGrantTypes(): array  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return ['authorization_code'];  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param TokenEndpoint $tokenEndpoint  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $requestData  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws OAuthException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function handleAccessTokenRequest(TokenEndpoint $tokenEndpoint, array $requestData): array  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //        foreach ($this->accessTokenRequestParameters as $accessTokenRequestParameter) { | 
            
                            
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                //            $accessTokenRequestParameter->handle($tokenEndpoint, $requestData);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (empty($requestData['code'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new OAuthException('invalid_request', | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'The request is missing the required parameter code.',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'https://tools.ietf.org/html/rfc7636#section-4.4');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $code = $requestData['code'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $authorizationCode = $this->authorizationCodeStorage->find($code);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * ensure that the authorization code was issued to the authenticated  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * confidential client, or if the client is public, ensure that the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * code was issued to "client_id" in the request,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$authorizationCode || $authorizationCode->getClientIdentifier() !== $tokenEndpoint->getClient()->getIdentifier()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new OAuthException('invalid_grant', | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                     | 
                
                 | 
                                'The request includes the invalid parameter code.',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    124
                 | 
                                    
                                                     | 
                
                 | 
                                'https://tools.ietf.org/html/rfc7636#section-4.4');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    125
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    126
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    127
                 | 
                                    
                                                     | 
                
                 | 
                        $this->authorizationCodeStorage->revoke($code);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    128
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                         * verify that the authorization code is valid  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                        if ($this->authorizationCodeStorage->hasExpired($authorizationCode)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                            throw new OAuthException('invalid_grant', | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                                'The request includes the invalid parameter code. The code has expired.',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                                'https://tools.ietf.org/html/rfc7636#section-4.4');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                         * ensure that the "redirect_uri" parameter is present if the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                         * "redirect_uri" parameter was included in the initial authorization  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                         * request as described in Section 4.1.1, and if included ensure that  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                         * their values are identical.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                        if ($authorizationCode->getRedirectUri()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                            if (empty($requestData['redirect_uri'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                                throw new OAuthException('invalid_request', | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                                    'The request is missing the required parameter redirect_uri',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                                    'https://tools.ietf.org/html/rfc7636#section-4.1');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                            if ($requestData['redirect_uri'] !== $authorizationCode->getRedirectUri()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                                throw new OAuthException('invalid_request', | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                                    'The request includes the invalid parameter redirect_uri',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                                    'https://tools.ietf.org/html/rfc7636#section-4.1');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                        return $this->issueTokens($authorizationCode->getScope(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                            $authorizationCode->getResourceOwnerIdentifier(), $authorizationCode->getCode());  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                        
Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it.
The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production.
This check looks for comments that seem to be mostly valid code and reports them.