--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_muc_auto_member/mod_muc_auto_member.lua	Mon Jan 30 15:07:31 2023 +0000
@@ -0,0 +1,8 @@
+module:hook("muc-occupant-joined", function (event)
+	local room = event.room;
+	local occupant_jid = event.occupant.bare_jid;
+	local aff = room:get_affiliation(occupant_jid);
+	if aff then return; end -- user already registered
+	module:log("debug", "Automatically registering %s as a member in %s", occupant_jid, room.jid);
+	room:set_affiliation(true, occupant_jid, "member");
+end);