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<?php |
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namespace League\OAuth2\Server\IntrospectionValidators; |
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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\CryptKey; |
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use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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class BearerTokenValidator implements IntrospectionValidatorInterface |
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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 \League\OAuth2\Server\CryptKey |
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*/ |
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protected $privateKey; |
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/** |
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* @param AccessTokenRepositoryInterface $accessTokenRepository |
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*/ |
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public function __construct(AccessTokenRepositoryInterface $accessTokenRepository) |
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{ |
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$this->accessTokenRepository = $accessTokenRepository; |
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} |
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/** |
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* Set the private key. |
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* |
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* @param \League\OAuth2\Server\CryptKey $key |
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*/ |
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public function setPrivateKey(CryptKey $key) |
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{ |
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$this->privateKey = $key; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function validateIntrospection(ServerRequestInterface $request) |
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{ |
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try { |
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$token = $this->getTokenFromRequest($request); |
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} catch (InvalidArgumentException $e) { |
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return false; |
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} |
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if ( |
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$this->isTokenRevoked($token) || |
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$this->isTokenExpired($token) || |
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$this->isTokenUnverified($token) |
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) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Gets the token from the request body. |
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* |
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* @param ServerRequestInterface $request |
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* |
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* @return Token |
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*/ |
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public function getTokenFromRequest(ServerRequestInterface $request) |
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{ |
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$jwt = $request->getParsedBody()['token'] ?? null; |
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return (new Parser()) |
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->parse($jwt); |
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} |
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/** |
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* Checks whether the token is unverified. |
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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 isTokenUnverified(Token $token) |
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{ |
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$keychain = new Keychain(); |
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$key = $keychain->getPrivateKey( |
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$this->privateKey->getKeyPath(), |
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$this->privateKey->getPassPhrase() |
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); |
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return $token->verify(new Sha256(), $key->getContent()) === false; |
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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 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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