1package eu.siacs.conversations.generator;
 2
 3import eu.siacs.conversations.entities.Account;
 4import eu.siacs.conversations.entities.Contact;
 5import eu.siacs.conversations.services.XmppConnectionService;
 6import eu.siacs.conversations.xml.Element;
 7import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 8
 9public class PresenceGenerator extends AbstractGenerator {
10
11	public PresenceGenerator(XmppConnectionService service) {
12		super(service);
13	}
14
15	private PresencePacket subscription(String type, Contact contact) {
16		PresencePacket packet = new PresencePacket();
17		packet.setAttribute("type", type);
18		packet.setTo(contact.getJid());
19		packet.setFrom(contact.getAccount().getJid().toBareJid());
20		return packet;
21	}
22
23	public PresencePacket requestPresenceUpdatesFrom(Contact contact) {
24		return subscription("subscribe", contact);
25	}
26
27	public PresencePacket stopPresenceUpdatesFrom(Contact contact) {
28		return subscription("unsubscribe", contact);
29	}
30
31	public PresencePacket stopPresenceUpdatesTo(Contact contact) {
32		return subscription("unsubscribed", contact);
33	}
34
35	public PresencePacket sendPresenceUpdatesTo(Contact contact) {
36		return subscription("subscribed", contact);
37	}
38
39	public PresencePacket sendPresence(Account account) {
40		PresencePacket packet = new PresencePacket();
41		packet.setFrom(account.getJid());
42		String sig = account.getPgpSignature();
43		if (sig != null) {
44			packet.addChild("status").setContent("online");
45			packet.addChild("x", "jabber:x:signed").setContent(sig);
46		}
47		String capHash = getCapHash();
48		if (capHash != null) {
49			Element cap = packet.addChild("c",
50					"http://jabber.org/protocol/caps");
51			cap.setAttribute("hash", "sha-1");
52			cap.setAttribute("node", "http://conversations.im");
53			cap.setAttribute("ver", capHash);
54		}
55		return packet;
56	}
57
58	public PresencePacket sendOfflinePresence(Account account) {
59		PresencePacket packet = new PresencePacket();
60		packet.setFrom(account.getJid());
61		packet.setAttribute("type","unavailable");
62		return packet;
63	}
64}