providers/oauth2: improve error handling and event creation

authentik/providers/oauth2/errors.py

@@ -1,6 +1,8 @@
 """OAuth errors"""
+from typing import Optional
 from urllib.parse import quote
 
+from authentik.events.models import Event, EventAction
 from authentik.lib.sentry import SentryIgnoredException
 from authentik.providers.oauth2.models import GrantTypes
 
@@ -21,6 +23,13 @@ class OAuth2Error(SentryIgnoredException):
     def __repr__(self) -> str:
         return self.error
 
+    def to_event(self, message: Optional[str] = None) -> Event:
+        """Create configuration_error Event and save it."""
+        return Event.new(
+            EventAction.CONFIGURATION_ERROR,
+            message=message or self.description,
+        )
+
 
 class RedirectUriError(OAuth2Error):
     """The request fails due to a missing, invalid, or mismatching
@@ -32,6 +41,20 @@ class RedirectUriError(OAuth2Error):
         "redirection URI (redirect_uri)."
     )
 
+    provided_uri: str
+    allowed_uris: list[str]
+
+    def __init__(self, provided_uri: str, allowed_uris: list[str]) -> None:
+        super().__init__()
+        self.provided_uri = provided_uri
+        self.allowed_uris = allowed_uris
+
+    def to_event(self) -> Event:
+        return super().to_event(
+            f"Invalid redirect URI was used. Client used '{self.provided_uri}'. "
+            f"Allowed redirect URIs are {','.join(self.allowed_uris)}"
+        )
+
 
 class ClientIdError(OAuth2Error):
     """The client identifier (client_id) is missing or invalid."""
@@ -39,6 +62,15 @@ class ClientIdError(OAuth2Error):
     error = "Client ID Error"
     description = "The client identifier (client_id) is missing or invalid."
 
+    client_id: str
+
+    def __init__(self, client_id: str) -> None:
+        super().__init__()
+        self.client_id = client_id
+
+    def to_event(self) -> Event:
+        return super().to_event(f"Invalid client identifier: {self.client_id}.")
+
 
 class UserAuthError(OAuth2Error):
     """

authentik/providers/oauth2/views/authorize.py

@@ -145,7 +145,7 @@ class OAuthAuthorizationParams:
             )
         except OAuth2Provider.DoesNotExist:
             LOGGER.warning("Invalid client identifier", client_id=self.client_id)
-            raise ClientIdError()
+            raise ClientIdError(client_id=self.client_id)
         self.check_redirect_uri()
         self.check_scope()
         self.check_nonce()
@@ -155,24 +155,18 @@ class OAuthAuthorizationParams:
         """Redirect URI validation."""
         if not self.redirect_uri:
             LOGGER.warning("Missing redirect uri.")
-            raise RedirectUriError()
+            raise RedirectUriError("", self.provider.redirect_uris.split())
         if self.redirect_uri.lower() not in [
             x.lower() for x in self.provider.redirect_uris.split()
         ]:
-            Event.new(
-                EventAction.CONFIGURATION_ERROR,
-                provider=self.provider,
-                message="Invalid redirect URI was used.",
-                client_used=self.redirect_uri,
-                configured=self.provider.redirect_uris.split(),
-            ).save()
             LOGGER.warning(
                 "Invalid redirect uri",
                 redirect_uri=self.redirect_uri,
                 excepted=self.provider.redirect_uris.split(),
             )
-            raise RedirectUriError()
-
+            raise RedirectUriError(
+                self.redirect_uri, self.provider.redirect_uris.split()
+            )
         if self.request:
             raise AuthorizeError(
                 self.redirect_uri, "request_not_supported", self.grant_type, self.state
@@ -262,10 +256,12 @@ class OAuthFulfillmentStage(StageView):
             ).from_http(self.request)
             return redirect(self.create_response_uri())
         except (ClientIdError, RedirectUriError) as error:
+            error.to_event().from_http(request)
             self.executor.stage_invalid()
             # pylint: disable=no-member
             return bad_request_message(request, error.description, title=error.error)
         except AuthorizeError as error:
+            error.to_event().from_http(request)
             self.executor.stage_invalid()
             return redirect(error.create_uri())
 
@@ -383,8 +379,10 @@ class AuthorizationFlowInitView(PolicyAccessView):
         try:
             self.params = OAuthAuthorizationParams.from_request(self.request)
         except AuthorizeError as error:
+            error.to_event().from_http(self.request)
             raise RequestValidationError(redirect(error.create_uri()))
         except OAuth2Error as error:
+            error.to_event().from_http(self.request)
             raise RequestValidationError(
                 bad_request_message(self.request, error.description, title=error.error)
             )
@@ -398,6 +396,7 @@ class AuthorizationFlowInitView(PolicyAccessView):
                 self.params.grant_type,
                 self.params.state,
             )
+            error.to_event().from_http(self.request)
             raise RequestValidationError(redirect(error.create_uri()))
 
     def resolve_provider_application(self):