aboutsummaryrefslogtreecommitdiff
path: root/xmpp-vala/src/module/bind.vala
blob: 4ddce17dc209fd4fb2a6b8ed1b15b996e8b4e3b2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
using Xmpp.Core;

namespace Xmpp.Bind {
    private const string NS_URI = "urn:ietf:params:xml:ns:xmpp-bind";

    /** The parties to a stream MUST consider resource binding as mandatory-to-negotiate. (RFC6120 7.3.1) */
    public class Module : XmppStreamNegotiationModule {
        public const string ID = "bind_module";
        public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, ID);

        private string requested_resource;

        public signal void bound_to_resource(XmppStream stream, string my_jid);

        public Module(string requested_resource) {
            this.requested_resource = requested_resource;
        }

        public void iq_response_stanza(XmppStream stream, Iq.Stanza iq) {
            var flag = Flag.get_flag(stream);
            if (flag == null || flag.finished) return;

            if (iq.type_ == Iq.Stanza.TYPE_RESULT) {
                flag.my_jid = iq.stanza.get_subnode("jid", NS_URI, true).get_string_content();
                flag.finished = true;
                bound_to_resource(stream, flag.my_jid);
            }
        }

        public void received_features_node(XmppStream stream) {
            if (stream.is_setup_needed()) return;

            var bind = stream.features.get_subnode("bind", NS_URI);
            if (bind != null) {
                var flag = new Flag();
                StanzaNode bind_node = new StanzaNode.build("bind", NS_URI).add_self_xmlns()
                                        .put_node(new StanzaNode.build("resource", NS_URI).put_node(new StanzaNode.text(requested_resource)));
                stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.set(bind_node), new IqResponseListenerImpl());
                stream.add_flag(flag);
            }
        }

        private class IqResponseListenerImpl : Iq.ResponseListener, Object {
            public void on_result(XmppStream stream, Iq.Stanza iq) {
                stream.get_module(Bind.Module.IDENTITY).iq_response_stanza(stream, iq);
            }
        }

        public override void attach(XmppStream stream) {
            Iq.Module.require(stream);
            stream.received_features_node.connect(this.received_features_node);
        }

        public override void detach(XmppStream stream) {
            stream.received_features_node.disconnect(this.received_features_node);
        }

        public static void require(XmppStream stream) {
            if (stream.get_module(IDENTITY) == null) stream.add_module(new Bind.Module(""));
        }

        public override bool mandatory_outstanding(XmppStream stream) {
            return !Flag.has_flag(stream) || !Flag.get_flag(stream).finished;
        }

        public override bool negotiation_active(XmppStream stream) {
            return Flag.has_flag(stream) && !Flag.get_flag(stream).finished;
        }

        public override string get_ns() { return NS_URI; }
        public override string get_id() { return ID; }
    }

    public class Flag : XmppStreamFlag {
        public const string ID = "bind";
        public string? my_jid;
        public bool finished = false;

        public static Flag? get_flag(XmppStream stream) {
            return (Flag?) stream.get_flag(NS_URI, ID);
        }

        public static bool has_flag(XmppStream stream) {
            return get_flag(stream) != null;
        }

        public override string get_ns() { return NS_URI; }
        public override string get_id() { return ID; }
    }
}