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authorPatrick Cloke <clokep@users.noreply.github.com>2021-01-05 07:41:48 -0500
committerGitHub <noreply@github.com>2021-01-05 07:41:48 -0500
commit9dde9c9f01ff8ed4c60314f10d97261739ea0547 (patch)
tree71075e39fa758362d748c27c7cfc7ec4724209d1 /synapse/events/utils.py
parentAdd initial support for a "pick your IdP" page (#9017) (diff)
downloadsynapse-9dde9c9f01ff8ed4c60314f10d97261739ea0547.tar.xz
Implement MSC2176: Updated redaction rules (#8984)
An experimental room version ("org.matrix.msc2176") contains
the new redaction rules for testing.
Diffstat (limited to 'synapse/events/utils.py')
-rw-r--r--synapse/events/utils.py16
1 files changed, 14 insertions, 2 deletions
diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index 14f7f1156f..9c22e33813 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -79,13 +79,15 @@ def prune_event_dict(room_version: RoomVersion, event_dict: dict) -> dict:
         "state_key",
         "depth",
         "prev_events",
-        "prev_state",
         "auth_events",
         "origin",
         "origin_server_ts",
-        "membership",
     ]
 
+    # Room versions from before MSC2176 had additional allowed keys.
+    if not room_version.msc2176_redaction_rules:
+        allowed_keys.extend(["prev_state", "membership"])
+
     event_type = event_dict["type"]
 
     new_content = {}
@@ -98,6 +100,10 @@ def prune_event_dict(room_version: RoomVersion, event_dict: dict) -> dict:
     if event_type == EventTypes.Member:
         add_fields("membership")
     elif event_type == EventTypes.Create:
+        # MSC2176 rules state that create events cannot be redacted.
+        if room_version.msc2176_redaction_rules:
+            return event_dict
+
         add_fields("creator")
     elif event_type == EventTypes.JoinRules:
         add_fields("join_rule")
@@ -112,10 +118,16 @@ def prune_event_dict(room_version: RoomVersion, event_dict: dict) -> dict:
             "kick",
             "redact",
         )
+
+        if room_version.msc2176_redaction_rules:
+            add_fields("invite")
+
     elif event_type == EventTypes.Aliases and room_version.special_case_aliases_auth:
         add_fields("aliases")
     elif event_type == EventTypes.RoomHistoryVisibility:
         add_fields("history_visibility")
+    elif event_type == EventTypes.Redaction and room_version.msc2176_redaction_rules:
+        add_fields("redacts")
 
     allowed_fields = {k: v for k, v in event_dict.items() if k in allowed_keys}