Ensure is_verified on /_matrix/client/r0/room_keys/keys is a boolean (#7150)

Author: anoadragon453

changelog.d/7150.bugfix

@@ -0,0 +1 @@
+Ensure `is_verified` is a boolean in responses to `GET /_matrix/client/r0/room_keys/keys`. Also warn the user if they forgot the `version` query param.

synapse/rest/client/v2_alpha/room_keys.py

@@ -188,7 +188,7 @@ async def on_GET(self, request, room_id, session_id):
         """
         requester = await self.auth.get_user_by_req(request, allow_guest=False)
         user_id = requester.user.to_string()
-        version = parse_string(request, "version")
+        version = parse_string(request, "version", required=True)
 
         room_keys = await self.e2e_room_keys_handler.get_room_keys(
             user_id, version, room_id, session_id

synapse/storage/data_stores/main/e2e_room_keys.py

@@ -146,7 +146,8 @@ def get_e2e_room_keys(self, user_id, version, room_id=None, session_id=None):
             room_entry["sessions"][row["session_id"]] = {
                 "first_message_index": row["first_message_index"],
                 "forwarded_count": row["forwarded_count"],
-                "is_verified": row["is_verified"],
+                # is_verified must be returned to the client as a boolean
+                "is_verified": bool(row["is_verified"]),
                 "session_data": json.loads(row["session_data"]),
             }