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<?php |
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/* |
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You may not change or alter any portion of this comment or credits |
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of supporting developers from this source code or any supporting source code |
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which is considered copyrighted (c) material of the original comment or credit authors. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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namespace Xmf\Jwt; |
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use Firebase\JWT\JWT; |
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use Xmf\Key\KeyAbstract; |
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/** |
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* Basic JSON Web Token support |
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* |
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* @category Xmf\Jwt\JsonWebToken |
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* @package Xmf |
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* @author Richard Griffith <[email protected]> |
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* @copyright 2016 XOOPS Project (http://xoops.org) |
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* @license GNU GPL 2 or later (http://www.gnu.org/licenses/gpl-2.0.html) |
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* @link http://xoops.org |
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*/ |
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class JsonWebToken |
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{ |
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/** |
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* @var KeyAbstract |
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*/ |
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protected $key; |
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/** |
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* @var string |
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*/ |
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protected $algorithm = 'HS256'; |
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/** |
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* @var array |
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*/ |
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protected $claims = array(); |
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/** |
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* JsonWebToken constructor. |
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* |
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* @param KeyAbstract $key key for signing/validating |
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* @param string $algorithm algorithm to use for signing/validating |
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*/ |
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public function __construct(KeyAbstract $key, $algorithm = 'HS256') |
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{ |
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$this->key = $key; |
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$this->setAlgorithm($algorithm); |
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} |
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/** |
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* @param string $algorithm algorithm to use for signing/validating |
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* |
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* @return JsonWebToken |
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* |
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* @throws \DomainException |
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*/ |
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public function setAlgorithm($algorithm) |
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{ |
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if (array_key_exists($algorithm, JWT::$supported_algs)) { |
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$this->algorithm = $algorithm; |
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return $this; |
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} |
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throw new \DomainException('Algorithm not supported'); |
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} |
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/** |
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* Decode a JWT string, validating signature and well defined registered claims, |
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* and optionally validate against a list of supplied claims |
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* |
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* @param string $jwtString string containing the JWT to decode |
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* @param array|\Traversable $assertClaims associative array, claim => value, of claims to assert |
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* |
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* @return object|false |
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*/ |
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public function decode($jwtString, $assertClaims = array()) |
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{ |
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$allowedAlgorithms = array($this->algorithm); |
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try { |
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$values = JWT::decode($jwtString, $this->key->getVerifying(), $allowedAlgorithms); |
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} catch (\Exception $e) { |
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trigger_error($e->getMessage(), E_USER_NOTICE); |
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return false; |
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} |
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foreach ($assertClaims as $claim => $assert) { |
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if (!property_exists($values, $claim)) { |
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return false; |
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} elseif ($values->$claim != $assert) { |
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return false; |
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} |
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} |
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return $values; |
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} |
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/** |
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* Create a signed token string for a payload |
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* |
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* @param array|\ArrayObject $payload traversable set of claims, claim => value |
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* @param int $expirationOffset seconds from now that token will expire. If not specified, |
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* an "exp" claim will not be added or updated |
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* |
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* @return string encoded and signed jwt string |
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* |
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* @throws \DomainException; |
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* @throws \InvalidArgumentException; |
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* @throws \UnexpectedValueException; |
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*/ |
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public function create($payload, $expirationOffset = 0) |
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{ |
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if ((int) $expirationOffset > 0) { |
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$payload['exp'] = time() + (int) $expirationOffset; |
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} |
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$value = JWT::encode($payload, $this->key->getSigning(), $this->algorithm); |
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return $value; |
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} |
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} |
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geekwright /
XoopsCore
