From db70435de740b534936df75c435290a37dcc015f Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Tue, 20 Apr 2021 13:37:54 +0100
Subject: Fix bug where we sent remote presence states to remote servers
 (#9850)

---
 synapse/federation/sender/__init__.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'synapse/federation')

diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py
index 6266accaf5..b00a55324c 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -539,6 +539,10 @@ class FederationSender(AbstractFederationSender):
             # No-op if presence is disabled.
             return
 
+        # Ensure we only send out presence states for local users.
+        for state in states:
+            assert self.is_mine_id(state.user_id)
+
         for destination in destinations:
             if destination == self.server_name:
                 continue
-- 
cgit 1.5.1