gistfile1.lua

local host = hosts[module.host];

module:hook("presence/full", function(event)
	local origin, stanza = event.origin, event.stanza;
	local node, host, resource = jid_split(stanza.attr.to);
	
	if not node then return; end -- not to a room
	
	local room = host.muc[node.."@"..host];
	if not room then
		origin.send(st.error_reply(stanza, "auth", "not-allowed"));
	end
end);