Files
authentik/authentik/providers/oauth2/views/introspection.py
2023-06-19 18:31:07 +02:00

80 lines
2.8 KiB
Python

"""authentik OAuth2 Token Introspection Views"""
from dataclasses import dataclass, field
from django.http import HttpRequest, HttpResponse
from django.utils.decorators import method_decorator
from django.views import View
from django.views.decorators.csrf import csrf_exempt
from structlog.stdlib import get_logger
from authentik.providers.oauth2.errors import TokenIntrospectionError
from authentik.providers.oauth2.models import AccessToken, IDToken, OAuth2Provider, RefreshToken
from authentik.providers.oauth2.utils import TokenResponse, authenticate_provider
LOGGER = get_logger()
@dataclass(slots=True)
class TokenIntrospectionParams:
"""Parameters for Token Introspection"""
token: RefreshToken | AccessToken
provider: OAuth2Provider
id_token: IDToken = field(init=False)
def __post_init__(self):
if self.token.is_expired:
LOGGER.debug("Token is not valid")
raise TokenIntrospectionError()
self.id_token = self.token.id_token
if not self.token.id_token:
LOGGER.debug(
"token not an authentication token",
token=self.token,
)
raise TokenIntrospectionError()
@staticmethod
def from_request(request: HttpRequest) -> "TokenIntrospectionParams":
"""Extract required Parameters from HTTP Request"""
raw_token = request.POST.get("token")
provider = authenticate_provider(request)
if not provider:
raise TokenIntrospectionError
access_token = AccessToken.objects.filter(token=raw_token).first()
if access_token:
return TokenIntrospectionParams(access_token, provider)
refresh_token = RefreshToken.objects.filter(token=raw_token).first()
if refresh_token:
return TokenIntrospectionParams(refresh_token, provider)
LOGGER.debug("Token does not exist", token=raw_token)
raise TokenIntrospectionError()
@method_decorator(csrf_exempt, name="dispatch")
class TokenIntrospectionView(View):
"""Token Introspection
https://datatracker.ietf.org/doc/html/rfc7662"""
token: RefreshToken | AccessToken
params: TokenIntrospectionParams
provider: OAuth2Provider
def post(self, request: HttpRequest) -> HttpResponse:
"""Introspection handler"""
try:
self.params = TokenIntrospectionParams.from_request(request)
response = {}
if self.params.id_token:
response.update(self.params.id_token.to_dict())
response["active"] = not self.params.token.is_expired and not self.params.token.revoked
response["scope"] = " ".join(self.params.token.scope)
response["client_id"] = self.params.provider.client_id
return TokenResponse(response)
except TokenIntrospectionError:
return TokenResponse({"active": False})