From 6c641b1834539c65edb35dd43a6afa7620e73e1c Mon Sep 17 00:00:00 2001 From: zotlabs Date: Tue, 14 Mar 2017 09:09:05 +1100 Subject: move oauth2 to vendor --- .../src/OAuth2/GrantType/JwtBearer.php | 226 +++++++++++++++++++++ 1 file changed, 226 insertions(+) create mode 100644 vendor/bshaffer/oauth2-server-php/src/OAuth2/GrantType/JwtBearer.php (limited to 'vendor/bshaffer/oauth2-server-php/src/OAuth2/GrantType/JwtBearer.php') diff --git a/vendor/bshaffer/oauth2-server-php/src/OAuth2/GrantType/JwtBearer.php b/vendor/bshaffer/oauth2-server-php/src/OAuth2/GrantType/JwtBearer.php new file mode 100644 index 000000000..bb11a6954 --- /dev/null +++ b/vendor/bshaffer/oauth2-server-php/src/OAuth2/GrantType/JwtBearer.php @@ -0,0 +1,226 @@ + + */ +class JwtBearer implements GrantTypeInterface, ClientAssertionTypeInterface +{ + private $jwt; + + protected $storage; + protected $audience; + protected $jwtUtil; + protected $allowedAlgorithms; + + /** + * Creates an instance of the JWT bearer grant type. + * + * @param OAuth2\Storage\JWTBearerInterface|JwtBearerInterface $storage A valid storage interface that implements storage hooks for the JWT bearer grant type. + * @param string $audience The audience to validate the token against. This is usually the full URI of the OAuth token requests endpoint. + * @param EncryptionInterface|OAuth2\Encryption\JWT $jwtUtil OPTONAL The class used to decode, encode and verify JWTs. + * @param array $config + */ + public function __construct(JwtBearerInterface $storage, $audience, EncryptionInterface $jwtUtil = null, array $config = array()) + { + $this->storage = $storage; + $this->audience = $audience; + + if (is_null($jwtUtil)) { + $jwtUtil = new Jwt(); + } + + $this->config = array_merge(array( + 'allowed_algorithms' => array('RS256', 'RS384', 'RS512') + ), $config); + + $this->jwtUtil = $jwtUtil; + + $this->allowedAlgorithms = $this->config['allowed_algorithms']; + } + + /** + * Returns the grant_type get parameter to identify the grant type request as JWT bearer authorization grant. + * + * @return + * The string identifier for grant_type. + * + * @see OAuth2\GrantType\GrantTypeInterface::getQuerystringIdentifier() + */ + public function getQuerystringIdentifier() + { + return 'urn:ietf:params:oauth:grant-type:jwt-bearer'; + } + + /** + * Validates the data from the decoded JWT. + * + * @return + * TRUE if the JWT request is valid and can be decoded. Otherwise, FALSE is returned. + * + * @see OAuth2\GrantType\GrantTypeInterface::getTokenData() + */ + public function validateRequest(RequestInterface $request, ResponseInterface $response) + { + if (!$request->request("assertion")) { + $response->setError(400, 'invalid_request', 'Missing parameters: "assertion" required'); + + return null; + } + + // Store the undecoded JWT for later use + $undecodedJWT = $request->request('assertion'); + + // Decode the JWT + $jwt = $this->jwtUtil->decode($request->request('assertion'), null, false); + + if (!$jwt) { + $response->setError(400, 'invalid_request', "JWT is malformed"); + + return null; + } + + // ensure these properties contain a value + // @todo: throw malformed error for missing properties + $jwt = array_merge(array( + 'scope' => null, + 'iss' => null, + 'sub' => null, + 'aud' => null, + 'exp' => null, + 'nbf' => null, + 'iat' => null, + 'jti' => null, + 'typ' => null, + ), $jwt); + + if (!isset($jwt['iss'])) { + $response->setError(400, 'invalid_grant', "Invalid issuer (iss) provided"); + + return null; + } + + if (!isset($jwt['sub'])) { + $response->setError(400, 'invalid_grant', "Invalid subject (sub) provided"); + + return null; + } + + if (!isset($jwt['exp'])) { + $response->setError(400, 'invalid_grant', "Expiration (exp) time must be present"); + + return null; + } + + // Check expiration + if (ctype_digit($jwt['exp'])) { + if ($jwt['exp'] <= time()) { + $response->setError(400, 'invalid_grant', "JWT has expired"); + + return null; + } + } else { + $response->setError(400, 'invalid_grant', "Expiration (exp) time must be a unix time stamp"); + + return null; + } + + // Check the not before time + if ($notBefore = $jwt['nbf']) { + if (ctype_digit($notBefore)) { + if ($notBefore > time()) { + $response->setError(400, 'invalid_grant', "JWT cannot be used before the Not Before (nbf) time"); + + return null; + } + } else { + $response->setError(400, 'invalid_grant', "Not Before (nbf) time must be a unix time stamp"); + + return null; + } + } + + // Check the audience if required to match + if (!isset($jwt['aud']) || ($jwt['aud'] != $this->audience)) { + $response->setError(400, 'invalid_grant', "Invalid audience (aud)"); + + return null; + } + + // Check the jti (nonce) + // @see http://tools.ietf.org/html/draft-ietf-oauth-json-web-token-13#section-4.1.7 + if (isset($jwt['jti'])) { + $jti = $this->storage->getJti($jwt['iss'], $jwt['sub'], $jwt['aud'], $jwt['exp'], $jwt['jti']); + + //Reject if jti is used and jwt is still valid (exp parameter has not expired). + if ($jti && $jti['expires'] > time()) { + $response->setError(400, 'invalid_grant', "JSON Token Identifier (jti) has already been used"); + + return null; + } else { + $this->storage->setJti($jwt['iss'], $jwt['sub'], $jwt['aud'], $jwt['exp'], $jwt['jti']); + } + } + + // Get the iss's public key + // @see http://tools.ietf.org/html/draft-ietf-oauth-json-web-token-06#section-4.1.1 + if (!$key = $this->storage->getClientKey($jwt['iss'], $jwt['sub'])) { + $response->setError(400, 'invalid_grant', "Invalid issuer (iss) or subject (sub) provided"); + + return null; + } + + // Verify the JWT + if (!$this->jwtUtil->decode($undecodedJWT, $key, $this->allowedAlgorithms)) { + $response->setError(400, 'invalid_grant', "JWT failed signature verification"); + + return null; + } + + $this->jwt = $jwt; + + return true; + } + + public function getClientId() + { + return $this->jwt['iss']; + } + + public function getUserId() + { + return $this->jwt['sub']; + } + + public function getScope() + { + return null; + } + + /** + * Creates an access token that is NOT associated with a refresh token. + * If a subject (sub) the name of the user/account we are accessing data on behalf of. + * + * @see OAuth2\GrantType\GrantTypeInterface::createAccessToken() + */ + public function createAccessToken(AccessTokenInterface $accessToken, $client_id, $user_id, $scope) + { + $includeRefreshToken = false; + + return $accessToken->createAccessToken($client_id, $user_id, $scope, $includeRefreshToken); + } +} -- cgit v1.2.3