outposts: fix update signal not being sent to correct instances

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/outposts/channels.py

@@ -40,7 +40,7 @@ class WebsocketMessage:
 class OutpostConsumer(AuthJsonConsumer):
     """Handler for Outposts that connect over websockets for health checks and live updates"""
 
-    outpost: Optional[Outpost] = None
+    outpost: Outpost
 
     last_uid: Optional[str] = None
 
@@ -64,7 +64,9 @@ class OutpostConsumer(AuthJsonConsumer):
     # pylint: disable=unused-argument
     def disconnect(self, close_code):
         if self.outpost and self.last_uid:
-            OutpostState.for_channel(self.outpost, self.last_uid).delete()
+            state = OutpostState.for_instance_uid(self.outpost, self.last_uid)
+            state.channel_ids.remove(self.channel_name)
+            state.save()
         LOGGER.debug(
             "removed outpost instance from cache",
             outpost=self.outpost,
@@ -75,12 +77,10 @@ class OutpostConsumer(AuthJsonConsumer):
         msg = from_dict(WebsocketMessage, content)
         uid = msg.args.get("uuid", self.channel_name)
         self.last_uid = uid
-        state = OutpostState(
-            uid=uid,
-            channel_id=self.channel_name,
-            last_seen=datetime.now(),
-            _outpost=self.outpost,
-        )
+        state = OutpostState.for_instance_uid(self.outpost, uid)
+        if self.channel_name not in state.channel_ids:
+            state.channel_ids.append(self.channel_name)
+        state.last_seen = datetime.now()
         if msg.instruction == WebsocketMessageInstruction.HELLO:
             state.version = msg.args.get("version", None)
             state.build_hash = msg.args.get("buildHash", "")

authentik/outposts/models.py

@@ -409,7 +409,7 @@ class OutpostState:
     """Outpost instance state, last_seen and version"""
 
     uid: str
-    channel_id: str
+    channel_ids: list[str] = field(default_factory=list)
     last_seen: Optional[datetime] = field(default=None)
     version: Optional[str] = field(default=None)
     version_should: Union[Version, LegacyVersion] = field(default=OUR_VERSION)
@@ -432,21 +432,20 @@ class OutpostState:
         keys = cache.keys(f"{outpost.state_cache_prefix}_*")
         states = []
         for key in keys:
-            channel = key.replace(f"{outpost.state_cache_prefix}_", "")
-            states.append(OutpostState.for_channel(outpost, channel))
+            instance_uid = key.replace(f"{outpost.state_cache_prefix}_", "")
+            states.append(OutpostState.for_instance_uid(outpost, instance_uid))
         return states
 
     @staticmethod
-    def for_channel(outpost: Outpost, channel: str) -> "OutpostState":
-        """Get state for a single channel"""
-        key = f"{outpost.state_cache_prefix}_{channel}"
-        default_data = {"uid": channel, "channel_id": channel}
+    def for_instance_uid(outpost: Outpost, uid: str) -> "OutpostState":
+        """Get state for a single instance"""
+        key = f"{outpost.state_cache_prefix}_{uid}"
+        default_data = {"uid": uid, "channel_ids": []}
         data = cache.get(key, default_data)
         if isinstance(data, str):
             cache.delete(key)
             data = default_data
         state = from_dict(OutpostState, data)
-        state.uid = channel
         # pylint: disable=protected-access
         state._outpost = outpost
         return state

authentik/outposts/tasks.py

@@ -202,8 +202,11 @@ def _outpost_single_update(outpost: Outpost, layer=None):
     if not layer:  # pragma: no cover
         layer = get_channel_layer()
     for state in OutpostState.for_outpost(outpost):
-        LOGGER.debug("sending update", channel=state.channel_id, outpost=outpost)
-        async_to_sync(layer.send)(state.channel_id, {"type": "event.update"})
+        for channel in state.channel_ids:
+            LOGGER.debug(
+                "sending update", channel=channel, instance=state.uid, outpost=outpost
+            )
+            async_to_sync(layer.send)(channel, {"type": "event.update"})
 
 
 @CELERY_APP.task()

outpost/pkg/proxy/oauth.go

@@ -207,7 +207,7 @@ func (p *OAuthProxy) OAuthCallback(rw http.ResponseWriter, req *http.Request) {
 	}
 	p.ClearCSRFCookie(rw, req)
 	if c.Value != nonce {
-		p.logger.WithField("user", session.Email).WithField("status", "AuthFailure").Info("Invalid authentication via OAuth2: CSRF token mismatch, potential attack")
+		p.logger.WithField("is", c.Value).WithField("should", nonce).WithField("user", session.Email).WithField("status", "AuthFailure").Info("Invalid authentication via OAuth2: CSRF token mismatch, potential attack")
 		p.ErrorPage(rw, http.StatusForbidden, "Permission Denied", "CSRF Failed")
 		return
 	}