gistfile1.lua

-- this module is global
module.host = "*";

-- list of hosts on which to add the component
local hosts = {
	["example.com"] = true;
	["myhost.com"] = true;
};

-- the jid of the component
local components = {
	["muc.server.com"] = true;
	["conference.jabber.org"] = true;
}

-- code doing the adding
local unloaded;
require "core.discomanager".addDiscoItemsHandler("*host", function(reply, to, from, node)
	if not unloaded and #node == 0 and hosts[to] then
		for jid in pairs(components) do
			reply:tag("item", {jid = jid}):up();
		end
		return true;
	end
end);

module.unload = function()
	unloaded = true;
end