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<?php |
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declare(strict_types=1); |
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namespace PSR7Csrf; |
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use Lcobucci\JWT\Builder; |
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use Lcobucci\JWT\Signer; |
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use Lcobucci\JWT\Token; |
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use Psr\Http\Message\ServerRequestInterface; |
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use PSR7Csrf\Exception\InvalidExpirationTimeException; |
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use PSR7Csrf\Exception\SessionAttributeNotFoundException; |
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use PSR7Csrf\Session\ExtractUniqueKeyFromSessionInterface; |
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use PSR7Sessions\Storageless\Session\SessionInterface; |
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final class TokenGenerator implements TokenGeneratorInterface |
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{ |
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/** |
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* @var Signer |
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*/ |
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private $signer; |
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/** |
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* @var ExtractUniqueKeyFromSessionInterface |
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*/ |
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private $extractUniqueKeyFromSession; |
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/** |
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* @var int |
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*/ |
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private $expirationTime; |
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/** |
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* @var string |
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*/ |
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private $sessionAttribute; |
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/** |
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* @param Signer $signer |
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* @param ExtractUniqueKeyFromSessionInterface $extractUniqueKeyFromSession |
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* @param int $expirationTime |
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* @param string $sessionAttribute |
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* |
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* @throws InvalidExpirationTimeException |
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*/ |
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public function __construct( |
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Signer $signer, |
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ExtractUniqueKeyFromSessionInterface $extractUniqueKeyFromSession, |
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int $expirationTime, |
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string $sessionAttribute |
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) { |
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if ($expirationTime <= 0) { |
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throw InvalidExpirationTimeException::fromInvalidExpirationTime($expirationTime); |
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} |
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$this->signer = $signer; |
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$this->extractUniqueKeyFromSession = $extractUniqueKeyFromSession; |
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$this->expirationTime = $expirationTime; |
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$this->sessionAttribute = $sessionAttribute; |
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} |
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public function __invoke(ServerRequestInterface $request) : Token |
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{ |
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$session = $request->getAttribute($this->sessionAttribute); |
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if (! $session instanceof SessionInterface) { |
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throw SessionAttributeNotFoundException::fromAttributeNameAndRequest($this->sessionAttribute, $request); |
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} |
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$timestamp = (new \DateTime())->getTimestamp(); |
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return (new Builder()) |
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->setIssuedAt($timestamp) |
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->setExpiration($timestamp + $this->expirationTime) |
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->sign($this->signer, $this->extractUniqueKeyFromSession->__invoke($session)) |
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->getToken(); |
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} |
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} |
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Ocramius /
PSR7Csrf
