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<?php |
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namespace League\OAuth2\Server; |
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use InvalidArgumentException; |
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use Lcobucci\JWT\Parser; |
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use Lcobucci\JWT\Signer\Keychain; |
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use Lcobucci\JWT\Signer\Rsa\Sha256; |
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use Lcobucci\JWT\Token; |
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use Lcobucci\JWT\ValidationData; |
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use League\OAuth2\Server\Exception\OAuthServerException; |
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use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface; |
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use League\OAuth2\Server\ResponseTypes\IntrospectionResponse; |
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use Psr\Http\Message\ServerRequestInterface; |
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class Introspector |
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{ |
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/** |
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* @var AccessTokenRepositoryInterface |
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*/ |
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private $accessTokenRepository; |
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/** |
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* @var CryptKey |
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*/ |
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private $privateKey; |
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/** |
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* @var Parser |
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*/ |
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private $parser; |
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/** |
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* New Introspector instance. |
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* |
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* @param AccessTokenRepositoryInterface $accessTokenRepository |
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* @param CryptKey $privateKey |
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* @param Parser $parser |
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*/ |
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public function __construct( |
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AccessTokenRepositoryInterface $accessTokenRepository, |
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CryptKey $privateKey, |
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Parser $parser |
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) { |
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$this->accessTokenRepository = $accessTokenRepository; |
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$this->privateKey = $privateKey; |
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$this->parser = $parser; |
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} |
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/** |
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* Validate the request |
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* |
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* @param ServerRequestInterface $request |
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* |
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* @throws OAuthServerException |
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*/ |
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public function validateIntrospectionRequest(ServerRequestInterface $request) |
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{ |
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if ($request->getMethod() !== 'POST') { |
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throw OAuthServerException::accessDenied('Invalid request method'); |
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} |
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} |
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/** |
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* Return an introspection response. |
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* |
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* @param ServerRequestInterface $request |
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* @param IntrospectionResponse $responseType |
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* |
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* @return IntrospectionResponse |
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*/ |
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public function respondToIntrospectionRequest( |
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ServerRequestInterface $request, |
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IntrospectionResponse $responseType |
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) { |
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$jwt = $request->getParsedBody()['token'] ?? null; |
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try { |
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$token = $this->parser->parse($jwt); |
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} catch (InvalidArgumentException $e) { |
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return $responseType; |
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} |
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return $this->isTokenValid($token) ? |
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$this->setTokenOnResponse($token, $responseType) : |
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$responseType; |
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} |
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/** |
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* Validate the JWT and make sure it has not expired or been revoked |
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* |
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* @return bool |
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*/ |
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private function isTokenValid(Token $token) |
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{ |
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return $this->verifyToken($token) && !$this->isTokenExpired($token) && !$this->isTokenRevoked($token); |
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} |
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/** |
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* Validate the JWT token. |
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* |
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* @param Token $token |
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* |
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* @return bool |
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*/ |
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private function verifyToken(Token $token) |
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{ |
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$keychain = new Keychain(); |
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$key = $keychain->getPrivateKey($this->privateKey->getKeyPath(), $this->privateKey->getPassPhrase()); |
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return $token->verify(new Sha256, $key->getContent()); |
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} |
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/** |
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* Ensure access token hasn't expired |
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* |
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* @param Token $token |
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* |
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* @return bool |
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*/ |
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private function isTokenExpired(Token $token) |
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{ |
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$data = new ValidationData(time()); |
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return !$token->validate($data); |
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} |
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/** |
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* Check if the given access token is revoked. |
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* |
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* @param Token $token |
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* |
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* @return bool |
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*/ |
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private function isTokenRevoked(Token $token) |
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{ |
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return $this->accessTokenRepository->isAccessTokenRevoked($token->getClaim('jti')); |
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} |
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/** |
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* Create active introspection response. |
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* |
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* @param Token $token |
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* |
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* @return IntrospectionResponse |
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*/ |
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private function setTokenOnResponse(Token $token, IntrospectionResponse $responseType) |
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{ |
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$responseType->setToken($token); |
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return $responseType; |
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} |
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} |
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thephpleague /
oauth2-server
