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using Gee;
namespace Xmpp.Xep.EntityTime {
public const string NS_URI = "urn:xmpp:time";
public class Module : XmppStreamModule, Iq.Handler {
public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0202_entity_time");
public bool enabled { get; set; default = false; }
private HashMap<Jid, Future<DateTime?>> active_time_requests = new HashMap<Jid, Future<DateTime?>>(Jid.hash_func, Jid.equals_func);
public async DateTime? query_time(XmppStream stream, Jid jid) {
if (!enabled) return null;
var future = active_time_requests[jid];
if (future != null) {
try {
return yield future.wait_async();
} catch (FutureError error) {
return null;
}
}
var promise = new Promise<DateTime?>();
active_time_requests[jid] = promise.future;
DateTime? res = null;
try {
Iq.Stanza iq = new Iq.Stanza.get(new StanzaNode.build("time", NS_URI).add_self_xmlns()) { to=jid };
var cancellable = new Cancellable();
var timeout_id = Timeout.add_seconds_once(10, () => cancellable.cancel());
Iq.Stanza result = yield stream.get_module(Iq.Module.IDENTITY).send_iq_async(stream, iq, Priority.HIGH, cancellable);
Source.remove(timeout_id);
StanzaNode time_node = result.stanza.get_subnode("time", NS_URI);
if (time_node == null) return null;
StanzaNode tzo_node = time_node.get_subnode("tzo", NS_URI);
StanzaNode utc_node = time_node.get_subnode("utc", NS_URI);
TimeZone? tzo = null;
if (utc_node != null) res = DateTimeProfiles.parse_time(utc_node.get_string_content());
if (tzo_node != null) tzo = DateTimeProfiles.parse_tzd(tzo_node.get_string_content());
if (res != null && tzo != null) res = res.to_timezone(tzo);
promise.set_value(res);
} catch (IOError e) {
debug("Error while fetching time: %s", e.message);
}
return res;
}
public override void attach(XmppStream stream) {
stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this);
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
}
public override void detach(XmppStream stream) {
stream.get_module(Iq.Module.IDENTITY).unregister_from_namespace(NS_URI, this);
stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI);
}
public async void on_iq_get(XmppStream stream, Iq.Stanza iq) {
var roster_flag = stream.get_flag(Roster.Flag.IDENTITY);
if (!enabled || roster_flag == null || roster_flag.get_item(iq.from.bare_jid) == null) {
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.forbidden()), null, Priority.LOW);
} else {
DateTime time = new DateTime.now_local();
StanzaNode time_node = new StanzaNode.build("time", NS_URI).add_self_xmlns();
time_node.put_node(new StanzaNode.build("utc", NS_URI).put_node(new StanzaNode.text(DateTimeProfiles.format_time(time))));
time_node.put_node(new StanzaNode.build("tzo", NS_URI).put_node(new StanzaNode.text(DateTimeProfiles.format_tzd(time))));
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq, time_node), null, Priority.LOW);
}
}
public override string get_ns() { return NS_URI; }
public override string get_id() { return IDENTITY.id; }
}
}
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