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using Gee;
namespace Xmpp.Roster {
private const string NS_URI = "jabber:iq:roster";
public class Module : XmppStreamModule, Iq.Handler {
public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "roster_module");
public signal void received_roster(XmppStream stream, Collection<Item> 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 async 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 alleged 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);
}
}
}
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