From 695e1ec322cc48e4239524de83ff071723aa259a Mon Sep 17 00:00:00 2001
From: Brad Stein <Brad.Stein@gmail.com>
Date: Wed, 7 Jan 2026 11:23:53 -0300
Subject: [PATCH] comms: set guest displayname at registration

---
 services/communication/guest-name-job.yaml    |  2 +-
 ...napse-guest-register-module-configmap.yaml | 20 +++++++++++++++++++
 services/communication/synapse-rendered.yaml  |  2 +-
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/services/communication/guest-name-job.yaml b/services/communication/guest-name-job.yaml
index cd5b9aa..6bd0761 100644
--- a/services/communication/guest-name-job.yaml
+++ b/services/communication/guest-name-job.yaml
@@ -6,7 +6,7 @@ metadata:
   namespace: comms
 spec:
   schedule: "*/1 * * * *"
-  suspend: false
+  suspend: true
   jobTemplate:
     spec:
       backoffLimit: 0
diff --git a/services/communication/synapse-guest-register-module-configmap.yaml b/services/communication/synapse-guest-register-module-configmap.yaml
index 8295f56..3afb3d9 100644
--- a/services/communication/synapse-guest-register-module-configmap.yaml
+++ b/services/communication/synapse-guest-register-module-configmap.yaml
@@ -6,11 +6,13 @@ metadata:
 data:
   guest_register.py: |
     import secrets
+    import random
 
     import synapse.api.auth
     from synapse.api.errors import Codes, SynapseError
     from synapse.http.server import DirectServeJsonResource
     from synapse.http.servlet import parse_json_object_from_request
+    from synapse.types import UserID, create_requester
 
 
     class GuestRegisterResource(DirectServeJsonResource):
@@ -20,6 +22,9 @@ data:
             self._shared_secret = shared_secret
             self._header_name = header_name
 
+            self._adj = ["brisk", "calm", "eager", "gentle", "merry", "nifty", "rapid", "sunny", "witty", "zesty"]
+            self._noun = ["otter", "falcon", "comet", "ember", "grove", "harbor", "meadow", "raven", "river", "summit"]
+
         async def _async_render_POST(self, request):  # noqa: N802
             provided = request.requestHeaders.getRawHeaders(self._header_name)
             if not provided or not secrets.compare_digest(provided[0], self._shared_secret):
@@ -43,6 +48,21 @@ data:
                 is_guest=True,
             )
 
+            displayname = body.get("displayname")
+            if not isinstance(displayname, str) or not displayname.strip():
+                displayname = f"{random.choice(self._adj)}-{random.choice(self._noun)}"
+
+            try:
+                requester = create_requester(user_id, is_guest=True, device_id=device_id)
+                await self._hs.get_profile_handler().set_displayname(
+                    UserID.from_string(user_id),
+                    requester,
+                    displayname,
+                    propagate=False,
+                )
+            except Exception:
+                pass
+
             result = {
                 "user_id": user_id,
                 "device_id": device_id,
diff --git a/services/communication/synapse-rendered.yaml b/services/communication/synapse-rendered.yaml
index e06f351..9155044 100644
--- a/services/communication/synapse-rendered.yaml
+++ b/services/communication/synapse-rendered.yaml
@@ -684,7 +684,7 @@ spec:
   template:
     metadata:
       annotations:
-        checksum/config: manual-rtc-enable-7
+        checksum/config: manual-rtc-enable-8
         checksum/secrets: ec9f3b254a562a0f0709461eb74a8cc91b8c1a2fb06be2594a131776c2541773
       labels:
         app.kubernetes.io/name: matrix-synapse