1 files changed, 110 insertions, 0 deletions
diff --git a/xmpp-vala/src/module/presence/module.vala b/xmpp-vala/src/module/presence/module.vala
new file mode 100644
index 00000000..6c9d183c
--- /dev/null
+++ b/xmpp-vala/src/module/presence/module.vala
@@ -0,0 +1,110 @@
+using Xmpp.Core;
+
+namespace Xmpp.Presence {
+    private const string NS_URI = "jabber:client";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "presence_module";
+
+        public signal void received_presence(XmppStream stream, Presence.Stanza presence);
+        public signal void pre_send_presence_stanza(XmppStream stream, Presence.Stanza presence);
+        public signal void initial_presence_sent(XmppStream stream, Presence.Stanza presence);
+        public signal void received_available(XmppStream stream, Presence.Stanza presence);
+        public signal void received_available_show(XmppStream stream, string jid, string show);
+        public signal void received_unavailable(XmppStream stream, string jid);
+        public signal void received_subscription_request(XmppStream stream, string jid);
+        public signal void received_unsubscription(XmppStream stream, string jid);
+
+        public bool available_resource = true;
+
+        public void request_subscription(XmppStream stream, string bare_jid) {
+            Presence.Stanza presence = new Presence.Stanza();
+            presence.to = bare_jid;
+            presence.type_ = Presence.Stanza.TYPE_SUBSCRIBE;
+            send_presence(stream, presence);
+        }
+
+        public void approve_subscription(XmppStream stream, string bare_jid) {
+            Presence.Stanza presence = new Presence.Stanza();
+            presence.to = bare_jid;
+            presence.type_ = Presence.Stanza.TYPE_SUBSCRIBED;
+            send_presence(stream, presence);
+        }
+
+        public void deny_subscription(XmppStream stream, string bare_jid) {
+            cancel_subscription(stream, bare_jid);
+        }
+
+        public void cancel_subscription(XmppStream stream, string bare_jid) {
+            Presence.Stanza presence = new Presence.Stanza();
+            presence.to = bare_jid;
+            presence.type_ = Presence.Stanza.TYPE_UNSUBSCRIBED;
+            send_presence(stream, presence);
+        }
+
+        public void unsubscribe(XmppStream stream, string bare_jid) {
+            Presence.Stanza presence = new Presence.Stanza();
+            presence.to = bare_jid;
+            presence.type_ = Presence.Stanza.TYPE_UNSUBSCRIBE;
+            send_presence(stream, presence);
+        }
+
+        public void send_presence(XmppStream stream, Presence.Stanza presence) {
+            pre_send_presence_stanza(stream, presence);
+            stream.write(presence.stanza);
+        }
+
+        public override void attach(XmppStream stream) {
+            stream.received_presence_stanza.connect(on_received_presence_stanza);
+            stream.stream_negotiated.connect(on_stream_negotiated);
+            stream.add_flag(new Flag());
+        }
+
+        public override void detach(XmppStream stream) {
+            stream.received_presence_stanza.disconnect(on_received_presence_stanza);
+            stream.stream_negotiated.disconnect(on_stream_negotiated);
+        }
+
+        private void on_received_presence_stanza(XmppStream stream, StanzaNode node) {
+            Presence.Stanza presence = new Presence.Stanza.from_stanza(node, Bind.Flag.get_flag(stream).my_jid);
+            received_presence(stream, presence);
+            switch (presence.type_) {
+                case Presence.Stanza.TYPE_AVAILABLE:
+                    Flag.get_flag(stream).add_presence(presence);
+                    received_available(stream, presence);
+                    received_available_show(stream, presence.from, presence.show);
+                    break;
+                case Presence.Stanza.TYPE_UNAVAILABLE:
+                    Flag.get_flag(stream).remove_presence(presence.from);
+                    received_unavailable(stream, presence.from);
+                    break;
+                case Presence.Stanza.TYPE_SUBSCRIBE:
+                    received_subscription_request(stream, presence.from);
+                    break;
+                case Presence.Stanza.TYPE_UNSUBSCRIBE:
+                    received_unsubscription(stream, presence.from);
+                    break;
+            }
+        }
+
+        private void on_stream_negotiated(XmppStream stream) {
+            if (available_resource) {
+                Presence.Stanza presence = new Presence.Stanza();
+                send_presence(stream, presence);
+                initial_presence_sent(stream, presence);
+            }
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Presence.Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+    }
+
+}