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<?php |
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namespace League\OAuth2\Server\IntrospectionValidators; |
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use DateTimeZone; |
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use InvalidArgumentException; |
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use Lcobucci\Clock\SystemClock; |
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use Lcobucci\JWT\Configuration; |
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use Lcobucci\JWT\Signer\Key\InMemory; |
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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\Validation\Constraint\SignedWith; |
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use Lcobucci\JWT\Validation\Constraint\StrictValidAt; |
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use Lcobucci\JWT\Validation\Constraint\ValidAt; |
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use League\OAuth2\Server\CryptKey; |
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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 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 CryptKey |
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*/ |
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protected $publicKey; |
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/** |
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* @var Configuration |
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*/ |
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protected $jwtConfiguration; |
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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 CryptKey $key |
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*/ |
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public function setPublicKey(CryptKey $key): void |
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{ |
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$this->publicKey = $key; |
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$this->initJwtConfiguration(); |
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} |
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/** |
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* Initialise the JWT configuration. |
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*/ |
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private function initJwtConfiguration(): void |
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{ |
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$this->jwtConfiguration = Configuration::forSymmetricSigner(new Sha256(), InMemory::empty()); |
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$this->jwtConfiguration->setValidationConstraints( |
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\class_exists(StrictValidAt::class) |
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? new StrictValidAt(new SystemClock(new DateTimeZone(\date_default_timezone_get()))) |
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: new ValidAt(new SystemClock(new DateTimeZone(\date_default_timezone_get()))), |
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new SignedWith( |
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new Sha256(), |
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InMemory::plainText($this->publicKey->getKeyContents(), $this->publicKey->getPassPhrase() ?? '') |
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) |
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); |
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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 $request): bool |
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{ |
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$this->validateIntrospectionRequest($request); |
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try { |
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$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->isTokenValid($token) || |
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$this->isTokenRevoked($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 $request): Token |
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{ |
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$jwt = $request->getParsedBody()['token'] ?? ''; |
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return $this->jwtConfiguration->parser() |
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->parse($jwt); |
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} |
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/** |
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* Validate the introspection 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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private function validateIntrospectionRequest(ServerRequestInterface $request): void |
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{ |
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if ($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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* 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): bool |
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{ |
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return $this->accessTokenRepository->isAccessTokenRevoked($token->claims()->get('jti')); |
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} |
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/** |
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* Check if the given token is valid |
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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 isTokenValid(Token $token): bool |
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{ |
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$constraints = $this->jwtConfiguration->validationConstraints(); |
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return $this->jwtConfiguration->validator()->validate($token, ...$constraints); |
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} |
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} |
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thephpleague /
oauth2-server
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