From c4d97ae8b0c19541947c5c3a978ed22e67293a0e Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@freedombone.net>
Date: Mon, 19 Jul 2021 10:07:20 +0100
Subject: [PATCH] Check that object type is a string

---
 inbox.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/inbox.py b/inbox.py
index 83d67d041..b5baccebb 100644
--- a/inbox.py
+++ b/inbox.py
@@ -870,6 +870,11 @@ def _receiveUpdate(recentPostsCache: {}, session, baseDir: str,
         if debug:
             print('DEBUG: ' + messageJson['type'] + ' object has no type')
         return False
+    if not isinstance(messageJson['object']['type'], str):
+        if debug:
+            print('DEBUG: ' + messageJson['type'] +
+                  ' object type is not string')
+        return False
     if not hasUsersPath(messageJson['actor']):
         if debug:
             print('DEBUG: "users" or "profile" missing from actor in ' +