mod_roster_command: Fix subscription when the "user JID" is a bare domain. Do not attempt to update the roster when the user is bare domain (e.g. a component), since they don't have rosters and the attempt results in an error: $ prosodyctl mod_roster_command subscribe proxy.example.com contact@example.com xxxxxxxxxxFailed to execute command: Error: /usr/lib/prosody/core/rostermanager.lua:104: attempt to concatenate local 'username' (a nil value) stack traceback: /usr/lib/prosody/core/rostermanager.lua:104: in function 'load_roster' /usr/lib/prosody/core/rostermanager.lua:305: in function 'set_contact_pending_out' mod_roster_command.lua:44: in function 'subscribe'

module:set_global();

local helpers = require "util.helpers";

local function init(module, events, name)
	helpers.log_events(events, name, module._log);

	function module.unload()
		helpers.revert_log_events(events);
	end
end

init(module, prosody.events, "global");

function module.add_host(module)
	init(module, prosody.hosts[module.host].events, module.host);
end