1 files changed, 15 insertions, 0 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index 829061c870..236f0c7f99 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -198,6 +198,15 @@ class EventContentFields:
     # cf https://github.com/matrix-org/matrix-doc/pull/1772
     ROOM_TYPE = "type"
 
+    # Whether a room can federate.
+    FEDERATE = "m.federate"
+
+    # The creator of the room, as used in `m.room.create` events.
+    ROOM_CREATOR = "creator"
+
+    # Used in m.room.guest_access events.
+    GUEST_ACCESS = "guest_access"
+
     # Used on normal messages to indicate they were historically imported after the fact
     MSC2716_HISTORICAL = "org.matrix.msc2716.historical"
     # For "insertion" events to indicate what the next chunk ID should be in
@@ -232,5 +241,11 @@ class HistoryVisibility:
     WORLD_READABLE = "world_readable"
 
 
+class GuestAccess:
+    CAN_JOIN = "can_join"
+    # anything that is not "can_join" is considered "forbidden", but for completeness:
+    FORBIDDEN = "forbidden"
+
+
 class ReadReceiptEventFields:
     MSC2285_HIDDEN = "org.matrix.msc2285.hidden"