--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_muc_config_restrict/mod_muc_config_restrict.lua	Sat May 18 15:31:14 2013 +0100
@@ -0,0 +1,26 @@
+local is_admin = require "core.usermanager".is_admin;
+local t_remove = table.remove;
+
+local restricted_options = module:get_option_set("muc_config_restricted", {})._items;
+
+function handle_config_submit(event)
+	local stanza = event.stanza;
+	if is_admin(stanza.attr.from, module.host) then return; end -- Don't restrict admins
+	local fields = event.fields;
+	for option in restricted_options do
+		fields[option] = nil; -- Like it was never there
+	end
+end
+
+function handle_config_request(event)
+	if is_admin(event.actor, module.host) then return; end -- Don't restrict admins
+	local form = event.form;
+	for i = #form, 1, -1 do
+		if restricted_options[form[i].name] then
+			t_remove(form, i);
+		end
+	end
+end
+
+module:hook("muc-config-submitted", handle_config_submit);
+module:hook("muc-config-form", handle_config_request);