using Gee; namespace Xmpp.Roster { private const string NS_URI = "jabber:iq:roster"; public class Module : XmppStreamModule, Iq.Handler { public static ModuleIdentity IDENTITY = new ModuleIdentity(NS_URI, "roster_module"); public signal void received_roster(XmppStream stream, Collection roster, Iq.Stanza stanza); public signal void pre_get_roster(XmppStream stream, Iq.Stanza iq); public signal void item_removed(XmppStream stream, Item item, Iq.Stanza iq); public signal void item_updated(XmppStream stream, Item item, Iq.Stanza iq); public signal void mutual_subscription(XmppStream stream, Jid jid); public bool interested_resource = true; public void add_jid(XmppStream stream, Jid jid, string? handle = null) { Item roster_item = new Item(); roster_item.jid = jid; if (handle != null) { roster_item.name = handle; } roster_set(stream, roster_item); } public void remove_jid(XmppStream stream, Jid jid) { Item roster_item = new Item(); roster_item.jid = jid; roster_item.subscription = Item.SUBSCRIPTION_REMOVE; roster_set(stream, roster_item); } /** * Set a handle for a jid * @param handle Handle to be set. If null, any handle will be removed. */ public void set_jid_handle(XmppStream stream, Jid jid, string? handle) { Flag flag = stream.get_flag(Flag.IDENTITY); Item item = flag.get_item(jid) ?? new Item() { jid=jid }; item.name = handle != null ? handle : ""; roster_set(stream, item); } public void on_iq_set(XmppStream stream, Iq.Stanza iq) { StanzaNode? query_node = iq.stanza.get_subnode("query", NS_URI); if (query_node == null) return; if (!iq.from.equals(stream.get_flag(Bind.Flag.IDENTITY).my_jid.bare_jid)) { warning("Received alledged roster push from %s, ignoring", iq.from.to_string()); return; } Flag flag = stream.get_flag(Flag.IDENTITY); Item item = new Item.from_stanza_node(query_node.get_subnode("item", NS_URI)); switch (item.subscription) { case Item.SUBSCRIPTION_REMOVE: flag.roster_items.unset(item.jid); item_removed(stream, item, iq); break; default: bool is_new = false; Item old = flag.get_item(item.jid); is_new = item.subscription == Item.SUBSCRIPTION_BOTH && (old == null || old.subscription == Item.SUBSCRIPTION_BOTH); flag.roster_items[item.jid] = item; item_updated(stream, item, iq); if(is_new) mutual_subscription(stream, item.jid); break; } } public override void attach(XmppStream stream) { stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this); stream.get_module(Presence.Module.IDENTITY).initial_presence_sent.connect(roster_get); stream.add_flag(new Flag()); } public override void detach(XmppStream stream) { stream.get_module(Presence.Module.IDENTITY).initial_presence_sent.disconnect(roster_get); } internal override string get_ns() { return NS_URI; } internal override string get_id() { return IDENTITY.id; } private void roster_get(XmppStream stream) { stream.get_flag(Flag.IDENTITY).iq_id = random_uuid(); StanzaNode query_node = new StanzaNode.build("query", NS_URI).add_self_xmlns(); Iq.Stanza iq = new Iq.Stanza.get(query_node, stream.get_flag(Flag.IDENTITY).iq_id); pre_get_roster(stream, iq); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, on_roster_get_received); } private static void on_roster_get_received(XmppStream stream, Iq.Stanza iq) { Flag flag = stream.get_flag(Flag.IDENTITY); if (iq.id == flag.iq_id) { StanzaNode? query_node = iq.stanza.get_subnode("query", NS_URI); if (query_node != null) { foreach (StanzaNode item_node in query_node.sub_nodes) { Item item = new Item.from_stanza_node(item_node); flag.roster_items[item.jid] = item; } } stream.get_module(Module.IDENTITY).received_roster(stream, flag.roster_items.values, iq); } } private void roster_set(XmppStream stream, Item roster_item) { StanzaNode query_node = new StanzaNode.build("query", NS_URI).add_self_xmlns() .put_node(roster_item.stanza_node); Iq.Stanza iq = new Iq.Stanza.set(query_node); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq); } } }