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<?php |
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namespace BenTools\MercurePHP\Security; |
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use BenTools\MercurePHP\Configuration\Configuration; |
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use Lcobucci\JWT\Parser; |
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use Lcobucci\JWT\Signer; |
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use Lcobucci\JWT\Signer\Key; |
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use Lcobucci\JWT\Token; |
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use Psr\Http\Message\ServerRequestInterface; |
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use RuntimeException; |
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use function BenTools\MercurePHP\get_signer; |
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final class Authenticator |
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{ |
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private Parser $parser; |
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private Key $key; |
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private Signer $signer; |
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public function __construct(Parser $parser, Key $key, Signer $signer) |
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{ |
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$this->parser = $parser; |
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$this->key = $key; |
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$this->signer = $signer; |
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} |
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public function authenticate(ServerRequestInterface $request): ?Token |
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{ |
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$token = self::extractToken($request, $this->parser, $this->key, $this->signer); |
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if (null === $token) { |
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return null; |
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} |
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if (!$token->verify($this->signer, $this->key)) { |
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throw new RuntimeException('Invalid token signature.'); |
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} |
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if ($token->isExpired()) { |
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throw new RuntimeException('Your token has expired.'); |
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} |
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return $token; |
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} |
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private static function extractRawToken(ServerRequestInterface $request): ?string |
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{ |
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if ($request->hasHeader('Authorization')) { |
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$payload = \trim($request->getHeaderLine('Authorization')); |
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if (0 === \strpos($payload, 'Bearer ')) { |
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return \substr($payload, 7); |
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} |
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} |
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$cookies = $request->getCookieParams(); |
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return $cookies['mercureAuthorization'] ?? null; |
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} |
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private static function extractToken(ServerRequestInterface $request, Parser $parser, Key $key, Signer $signer): ?Token |
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{ |
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$payload = self::extractRawToken($request); |
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if (null === $payload) { |
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return null; |
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} |
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try { |
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return $parser->parse($payload); |
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} catch (RuntimeException $e) { |
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throw new RuntimeException("Cannot decode token."); |
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} |
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} |
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public static function createPublisherAuthenticator(array $config): Authenticator |
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{ |
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$publisherKey = $config[Configuration::PUBLISHER_JWT_KEY] ?? $config[Configuration::JWT_KEY]; |
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$publisherAlgorithm = $config[Configuration::PUBLISHER_JWT_ALGORITHM] ?? $config[Configuration::JWT_ALGORITHM]; |
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return new self( |
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new Parser(), |
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new Key($publisherKey), |
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get_signer($publisherAlgorithm) |
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); |
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} |
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public static function createSubscriberAuthenticator(array $config): Authenticator |
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{ |
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$subscriberKey = $config[Configuration::SUBSCRIBER_JWT_KEY] ?? $config[Configuration::JWT_KEY]; |
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$subscriberAlgorithm = $config[Configuration::SUBSCRIBER_JWT_ALGORITHM] ?? $config[Configuration::JWT_ALGORITHM]; |
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return new self( |
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new Parser(), |
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new Key($subscriberKey), |
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get_signer($subscriberAlgorithm) |
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); |
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} |
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} |
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bpolaszek /
mercure-php-hub
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.