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<?php |
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/** |
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* ================================== |
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* Responsible PHP API |
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* ================================== |
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* |
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* @link Git https://github.com/vince-scarpa/responsibleAPI.git |
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* |
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* @api Responible API |
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* @package responsible\core\oauth |
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* |
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* @author Vince scarpa <[email protected]> |
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* |
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*/ |
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namespace responsible\core\auth; |
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use responsible\core\server; |
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use responsible\core\encoder; |
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use responsible\core\exception; |
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use responsible\core\route; |
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use responsible\core\user; |
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class jwtValidate extends jwt |
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{ |
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/** |
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* [$TIMESTAMP] |
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* @var int |
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*/ |
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protected static $TIMESTAMP; |
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/** |
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* [$LEEWAY] |
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* @var int |
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*/ |
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protected static $LEEWAY = 0; |
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/** |
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* [$ALGORITHM] |
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* @var string |
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*/ |
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private static $ALGORITHM; |
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/** |
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* [header Validate the header object] |
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* First segment of the token |
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* @return bool |
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*/ |
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public static function header(array $headObject = []) |
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{ |
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if ( |
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empty($headObject) || |
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!self::typ($headObject) || |
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!self::alg($headObject) |
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) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('denied_token')) |
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->error('UNAUTHORIZED'); |
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} |
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} |
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/** |
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* [payload Validate the payload object] |
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* Second segment of the token |
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* @return bool |
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*/ |
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public static function payload(array $payloadObject = []) |
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{ |
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if( self::isAnonymousScope($payloadObject) ) { |
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return true; |
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} |
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if ( |
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!is_array($payloadObject) || |
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!self::iss($payloadObject) || |
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!self::sub($payloadObject) || |
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!self::iat($payloadObject) || |
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!self::nbf($payloadObject) || |
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!self::exp($payloadObject) |
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) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('denied_token')) |
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->error('UNAUTHORIZED'); |
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} |
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} |
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/** |
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* Check if the scope is anonymous |
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* @return boolean |
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*/ |
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private static function isAnonymousScope($payloadObject) |
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{ |
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return (isset($payloadObject['scope']) && $payloadObject['scope'] == 'anonymous'); |
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} |
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/** |
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* [signature - Validate the signature object] |
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* Third segment of the token |
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* @return bool |
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*/ |
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public static function signature($jwtHead, $jwtPayload, $signature, $key) |
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{ |
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if (empty($jwtHead) || |
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empty($jwtPayload) || |
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empty($signature) || |
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empty($key) |
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) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('denied_token')) |
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->error('UNAUTHORIZED'); |
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} |
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$cipher = new encoder\cipher; |
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$hashed = $cipher->encode( |
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$cipher->hash( |
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self::$ALGORITHM, |
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$jwtHead . '.' . $jwtPayload, |
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$key |
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) |
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); |
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if (!$cipher->hashCompare($signature, $hashed)) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('denied_token')) |
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->error('UNAUTHORIZED'); |
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} |
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} |
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/** |
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* [typ Issuer claim] |
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* |
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* @return bool |
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*/ |
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public static function typ($headObject) |
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{ |
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if (!isset($headObject['typ']) || |
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(isset($headObject['typ']) && empty($headObject)) |
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) { |
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return; |
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} |
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return true; |
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} |
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/** |
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* [alg Issuer claim] |
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* |
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* @return bool |
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*/ |
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public static function alg($headObject) |
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{ |
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if (!isset($headObject['alg']) || |
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(isset($headObject['alg']) && empty($headObject)) && |
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self::getAlgorithm($headObject['alg']) |
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) { |
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return; |
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} |
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self::algorithm($headObject['alg']); |
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return true; |
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} |
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/** |
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* [iss Issuer claim] |
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* |
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* @return bool |
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*/ |
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public static function iss($payloadObject) |
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{ |
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if (!isset($payloadObject['iss']) || |
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(isset($payloadObject['iss']) && empty($payloadObject)) |
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) { |
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return; |
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} |
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$router = new route\router; |
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$router->route(); |
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if ($payloadObject['iss'] !== $router->getIssuer(true)) { |
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return; |
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} |
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return true; |
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} |
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/** |
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* [sub Subject claim] |
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* The Responsible API uses the "Subject" claim as a placeholder for account Ids |
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* |
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* @return bool |
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*/ |
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public static function sub($payloadObject) |
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{ |
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$server = new server([], parent::$options); |
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if ($server->isMockTest()) { |
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return true; |
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} |
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if (!isset($payloadObject['sub']) || |
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(isset($payloadObject['sub']) && empty($payloadObject)) |
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) { |
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return; |
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} |
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$account = (object) (new user\user) |
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->setOptions(parent::$options) |
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->load($payloadObject['sub'], ['refreshToken' => false]) |
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; |
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if (empty($account)) { |
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return; |
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} else { |
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if (!isset($account->account_id)) { |
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return; |
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} |
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if ((int) $account->account_id !== (int) $payloadObject['sub']) { |
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return; |
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} |
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} |
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return true; |
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} |
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/** |
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* [iat Issued at claim] |
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* |
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* @return bool |
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*/ |
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public static function iat($payloadObject) |
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{ |
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if (!isset($payloadObject['iat']) || |
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(isset($payloadObject['iat']) && empty($payloadObject)) |
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) { |
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return; |
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} |
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if ($payloadObject['iat'] > self::getTimestamp()) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('not_ready')) |
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->error('NO_CONTENT'); |
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} |
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return true; |
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} |
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/** |
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* [nbf Not before claim] |
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* |
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* @return bool |
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*/ |
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public static function nbf($payloadObject) |
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{ |
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if (!isset($payloadObject['nbf']) || |
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(isset($payloadObject['nbf']) && empty($payloadObject)) |
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) { |
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return; |
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} |
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if ($payloadObject['nbf'] > self::getTimestamp()) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('not_ready')) |
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->error('NO_CONTENT'); |
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} |
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return true; |
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} |
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/** |
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* [exp Expiration claim this optional so if its not set return true] |
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* |
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* @return bool |
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*/ |
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public static function exp($payloadObject) |
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{ |
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if (!isset($payloadObject['exp']) || |
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(isset($payloadObject['exp']) && empty($payloadObject)) |
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) { |
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return true; |
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} |
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if ($payloadObject['exp'] <= (int) (self::$TIMESTAMP - self::$LEEWAY)) { |
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(new exception\errorException) |
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->setOptions(parent::$options) |
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->message(self::messages('expired')) |
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->error('UNAUTHORIZED'); |
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} |
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return true; |
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} |
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/** |
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* [leeway Inherit the leeway offset] |
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* @param int $leeway [integer in seconds] |
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* @return void |
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*/ |
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public static function leeway($leeway) |
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{ |
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self::$LEEWAY = $leeway; |
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} |
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/** |
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* [timestamp Inherit the current timestamp (now)] |
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* @param int $timestamp [integer in seconds] |
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* @return void |
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*/ |
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public static function timestamp($timestamp) |
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{ |
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self::$TIMESTAMP = $timestamp; |
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} |
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/** |
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* [getTimestamp Add both the timestamp (now) and the leeway] |
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* @return int |
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*/ |
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private static function getTimestamp() |
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{ |
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return (int) (self::$TIMESTAMP + self::$LEEWAY); |
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} |
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/** |
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* [algorithm Set the requested hash algorithm] |
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* @return string |
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*/ |
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public static function algorithm($algo = 'SHA256') |
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{ |
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if ($algo == 'HS256') { |
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$algo = 'sha256'; |
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} |
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self::$ALGORITHM = $algo; |
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} |
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} |
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