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'

--
-- A module to indicate if a MUC message qualifies as historic based on XEP-0334 hints
--

module:depends"muc_mam"

module:log("debug", "Module loaded");

module:hook("muc-message-is-historic", function (event)
  if (event.stanza:get_child("no-store", "urn:xmpp:hints") or
    event.stanza:get_child("no-permanent-store", "urn:xmpp:hints")) then
      module:log("debug", "Not archiving stanza: %s (urn:xmpp:hints)", event.stanza)
    return false
  elseif event.stanza:get_child("store", "urn:xmpp:hints") then
    return true
  else
    return nil
  end
end)