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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /******************************************************************************  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Wikipedia Account Creation Assistance tool                                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *                                                                            *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * All code in this file is released into the public domain by the ACC        *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Development Team. Please see team.json for a list of contributors.         *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 ******************************************************************************/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Waca\Helpers;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MediaWiki\OAuthClient\Client;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MediaWiki\OAuthClient\ClientConfig;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MediaWiki\OAuthClient\Consumer;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MediaWiki\OAuthClient\Token;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Waca\Exceptions\CurlException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class OAuthProtocolHelper implements Interfaces\IOAuthProtocolHelper  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $oauthClient;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $mediawikiWebServiceEndpoint;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $authUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * OAuthHelper constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string     $oauthEndpoint  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string     $consumerKey  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string     $consumerSecret  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string     $mediawikiWebServiceEndpoint  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $oauthEndpoint,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $consumerKey,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $consumerSecret,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $mediawikiWebServiceEndpoint  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->mediawikiWebServiceEndpoint = $mediawikiWebServiceEndpoint;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $oauthClientConfig = new ClientConfig($oauthEndpoint);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $oauthClientConfig->setConsumer(new Consumer($consumerKey, $consumerSecret));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->oauthClient = new Client($oauthClientConfig);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritDoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getRequestToken()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /** @var Token $requestToken */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        list($authUrl, $requestToken) = $this->oauthClient->initiate();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->authUrl = $authUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $requestToken;  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritDoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getAuthoriseUrl($requestToken)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->authUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritDoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function callbackCompleted($oauthRequestToken, $oauthRequestSecret, $oauthVerifier)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $requestToken = new Token($oauthRequestToken, $oauthRequestSecret);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->oauthClient->complete($requestToken, $oauthVerifier);  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritDoc  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function getIdentityTicket($oauthAccessToken, $oauthAccessSecret)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $this->oauthClient->identify(new Token($oauthAccessToken, $oauthAccessSecret));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritDoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function apiCall($apiParams, $accessToken, $accessSecret, $method = 'GET')  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $userToken = new Token($accessToken, $accessSecret);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $apiParams['format'] = 'json';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($apiParams === null || ! is_array($apiParams)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new CurlException("Invalid API call"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $url = $this->mediawikiWebServiceEndpoint;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $isPost = ($method === 'POST');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($method === 'GET') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $query = http_build_query($apiParams);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $url .= '?' . $query;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $apiParams = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $data = $this->oauthClient->makeOAuthCall($userToken, $url, $isPost, $apiParams);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return json_decode($data);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: