From 62166d33affa48b625867b246ae1c282fc97035b Mon Sep 17 00:00:00 2001
From: grunfink <grunfink@comam.es>
Date: Sun, 30 Aug 2026 08:16:00 +0200
Subject: Added a key check to Undo.

---
 activitypub.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/activitypub.c b/activitypub.c
index 4d1a449..5c93bec 100644
--- a/activitypub.c
+++ b/activitypub.c
@@ -2813,6 +2813,10 @@ int process_input_message(snac *snac, const xs_dict *msg, const xs_dict *req)
             utype = "Follow";
         }
 
+        if (strcmp(actor, key_id)) {
+            snac_log(snac, xs_fmt("Undo: mismatched actor '%s' and key '%s'", actor, key_id));
+        }
+        else
         if (strcmp(utype, "Follow") == 0) { /** **/
             if (!id) {
                 snac_log(snac, xs_fmt("no id (msg.object.object) when "
-- 
cgit