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import time
import logging
from authlib.jose import jwt, JoseError, JWTClaims
from ..rfc6749 import TokenMixin
from ..rfc6750 import BearerTokenValidator
logger = logging.getLogger(__name__)
class JWTBearerToken(TokenMixin, JWTClaims):
def check_client(self, client):
return self['client_id'] == client.get_client_id()
def get_scope(self):
return self.get('scope')
def get_expires_in(self):
return self['exp'] - self['iat']
def is_expired(self):
return self['exp'] < time.time()
def is_revoked(self):
return False
class JWTBearerTokenValidator(BearerTokenValidator):
TOKEN_TYPE = 'bearer'
token_cls = JWTBearerToken
def __init__(self, public_key, issuer=None, realm=None, **extra_attributes):
super().__init__(realm, **extra_attributes)
self.public_key = public_key
claims_options = {
'exp': {'essential': True},
'client_id': {'essential': True},
'grant_type': {'essential': True},
}
if issuer:
claims_options['iss'] = {'essential': True, 'value': issuer}
self.claims_options = claims_options
def authenticate_token(self, token_string):
try:
claims = jwt.decode(
token_string, self.public_key,
claims_options=self.claims_options,
claims_cls=self.token_cls,
)
claims.validate()
return claims
except JoseError as error:
logger.debug('Authenticate token failed. %r', error)
return None