89 lines
3.0 KiB
Python
89 lines
3.0 KiB
Python
"""authentik OAuth2 Token Introspection Views"""
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from dataclasses import dataclass, field
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from django.http import HttpRequest, HttpResponse
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from django.utils.decorators import method_decorator
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from django.views import View
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from django.views.decorators.csrf import csrf_exempt
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from structlog.stdlib import get_logger
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from authentik.providers.oauth2.errors import TokenIntrospectionError
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from authentik.providers.oauth2.models import IDToken, OAuth2Provider, RefreshToken
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from authentik.providers.oauth2.utils import TokenResponse, authenticate_provider
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LOGGER = get_logger()
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@dataclass
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class TokenIntrospectionParams:
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"""Parameters for Token Introspection"""
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token: RefreshToken
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provider: OAuth2Provider
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id_token: IDToken = field(init=False)
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def __post_init__(self):
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if self.token.is_expired:
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LOGGER.debug("Token is not valid")
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raise TokenIntrospectionError()
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self.id_token = self.token.id_token
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if not self.token.id_token:
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LOGGER.debug(
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"token not an authentication token",
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token=self.token,
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)
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raise TokenIntrospectionError()
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@staticmethod
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def from_request(request: HttpRequest) -> "TokenIntrospectionParams":
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"""Extract required Parameters from HTTP Request"""
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raw_token = request.POST.get("token")
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token_type_hint = request.POST.get("token_type_hint", "access_token")
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token_filter = {token_type_hint: raw_token}
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if token_type_hint not in ["access_token", "refresh_token"]:
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LOGGER.debug("token_type_hint has invalid value", value=token_type_hint)
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raise TokenIntrospectionError()
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provider = authenticate_provider(request)
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if not provider:
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raise TokenIntrospectionError
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try:
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token: RefreshToken = RefreshToken.objects.get(provider=provider, **token_filter)
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except RefreshToken.DoesNotExist:
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LOGGER.debug("Token does not exist", token=raw_token)
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raise TokenIntrospectionError()
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return TokenIntrospectionParams(token=token, provider=provider)
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@method_decorator(csrf_exempt, name="dispatch")
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class TokenIntrospectionView(View):
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"""Token Introspection
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https://tools.ietf.org/html/rfc7662"""
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token: RefreshToken
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params: TokenIntrospectionParams
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provider: OAuth2Provider
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def post(self, request: HttpRequest) -> HttpResponse:
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"""Introspection handler"""
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try:
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self.params = TokenIntrospectionParams.from_request(request)
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response_dic = {}
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if self.params.id_token:
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token_dict = self.params.id_token.to_dict()
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for k in ("aud", "sub", "exp", "iat", "iss"):
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response_dic[k] = token_dict[k]
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response_dic["active"] = True
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response_dic["client_id"] = self.params.token.provider.client_id
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return TokenResponse(response_dic)
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except TokenIntrospectionError:
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return TokenResponse({"active": False})
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