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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Nikita Vershinin <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license MIT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OpenStackStorage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Authentication instances are used to interact with the remote authentication  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * service, retrieving storage system routing information and session tokens.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Authentication  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * The information about the authentication URL.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $urlInfo = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Request headers with username, API key and User-Agent.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $headers = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * User-Agent for request.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $userAgent = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Request timeout.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var integer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $timeout = 5;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * The class constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string  $username  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string  $apiKey  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string  $url  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string  $userAgent  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param integer $timeout  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function __construct($username, $apiKey, $url, $userAgent, $timeout = 5)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->urlInfo   = Utils::parseUrl($url);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->userAgent = $userAgent;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->timeout   = intval($timeout);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->headers   = array(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'x-auth-user' => $username,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'x-auth-key'  => $apiKey,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Initiates authentication with the remote service and returns a  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * array containing the storage system URL, CDN URL (can be empty)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * and session token.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \Exception|\OpenStackStorage\Exceptions\ResponseError  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \OpenStackStorage\Exceptions\AuthenticationError  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \OpenStackStorage\Exceptions\AuthenticationFailed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \Exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function authenticate()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $client = new Client(array('timeout' => $this->timeout)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $client->setBaseURL(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            '%s://%s:%d/',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->urlInfo['scheme'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->urlInfo['host'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->urlInfo['port']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $client->setUserAgent($this->userAgent);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $response = $client->get($this->urlInfo['path'], null, $this->headers);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } catch (Exceptions\ResponseError $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (401 == $e->getCode()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // A status code of 401 indicates that the supplied credentials  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // were not accepted by the authentication service.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new Exceptions\AuthenticationFailed();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw $e;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($response['headers']['x-auth-token'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authToken = $response['headers']['x-auth-token'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } elseif (isset($response['headers']['x-storage-token'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authToken = $response['headers']['x-storage-token'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authToken = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($response['headers']['x-storage-url'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $storageUrl = $response['headers']['x-storage-url'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $storageUrl = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!($authToken && $storageUrl)) { | 
            
                            
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                            throw new Exceptions\AuthenticationError(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Invalid response from the authentication service.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($response['headers']['x-cdn-management-url'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $cdnUrl = $response['headers']['x-cdn-management-url'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $cdnUrl = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $storageUrl,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $cdnUrl,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $authToken  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
stringvalues, the empty string''is a special case, in particular the following results might be unexpected: