1package eu.siacs.conversations.xmpp.jingle;
2
3import java.math.BigInteger;
4import java.security.SecureRandom;
5import java.util.HashMap;
6import java.util.List;
7import java.util.concurrent.CopyOnWriteArrayList;
8import android.annotation.SuppressLint;
9import android.util.Log;
10import eu.siacs.conversations.Config;
11import eu.siacs.conversations.entities.Account;
12import eu.siacs.conversations.entities.Message;
13import eu.siacs.conversations.services.AbstractConnectionManager;
14import eu.siacs.conversations.services.XmppConnectionService;
15import eu.siacs.conversations.xml.Element;
16import eu.siacs.conversations.xmpp.OnIqPacketReceived;
17import eu.siacs.conversations.xmpp.jid.InvalidJidException;
18import eu.siacs.conversations.xmpp.jid.Jid;
19import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
20import eu.siacs.conversations.xmpp.stanzas.IqPacket;
21
22public class JingleConnectionManager extends AbstractConnectionManager {
23 private List<JingleConnection> connections = new CopyOnWriteArrayList<>();
24
25 private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
26
27 @SuppressLint("TrulyRandom")
28 private SecureRandom random = new SecureRandom();
29
30 public JingleConnectionManager(XmppConnectionService service) {
31 super(service);
32 }
33
34 public void deliverPacket(Account account, JinglePacket packet) {
35 if (packet.isAction("session-initiate")) {
36 JingleConnection connection = new JingleConnection(this);
37 connection.init(account, packet);
38 connections.add(connection);
39 } else {
40 for (JingleConnection connection : connections) {
41 if (connection.getAccount() == account
42 && connection.getSessionId().equals(
43 packet.getSessionId())
44 && connection.getCounterPart().equals(packet.getFrom())) {
45 connection.deliverPacket(packet);
46 return;
47 }
48 }
49 IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
50 Element error = response.addChild("error");
51 error.setAttribute("type", "cancel");
52 error.addChild("item-not-found",
53 "urn:ietf:params:xml:ns:xmpp-stanzas");
54 error.addChild("unknown-session", "urn:xmpp:jingle:errors:1");
55 account.getXmppConnection().sendIqPacket(response, null);
56 }
57 }
58
59 public JingleConnection createNewConnection(Message message) {
60 JingleConnection connection = new JingleConnection(this);
61 connection.init(message);
62 this.connections.add(connection);
63 return connection;
64 }
65
66 public JingleConnection createNewConnection(final JinglePacket packet) {
67 JingleConnection connection = new JingleConnection(this);
68 this.connections.add(connection);
69 return connection;
70 }
71
72 public void finishConnection(JingleConnection connection) {
73 this.connections.remove(connection);
74 }
75
76 public void getPrimaryCandidate(Account account,
77 final OnPrimaryCandidateFound listener) {
78 if (Config.NO_PROXY_LOOKUP) {
79 listener.onPrimaryCandidateFound(false, null);
80 return;
81 }
82 if (!this.primaryCandidates.containsKey(account.getJid().toBareJid())) {
83 String xmlns = "http://jabber.org/protocol/bytestreams";
84 final String proxy = account.getXmppConnection()
85 .findDiscoItemByFeature(xmlns);
86 if (proxy != null) {
87 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
88 iq.setAttribute("to", proxy);
89 iq.query(xmlns);
90 account.getXmppConnection().sendIqPacket(iq,
91 new OnIqPacketReceived() {
92
93 @Override
94 public void onIqPacketReceived(Account account,
95 IqPacket packet) {
96 Element streamhost = packet
97 .query()
98 .findChild("streamhost",
99 "http://jabber.org/protocol/bytestreams");
100 if (streamhost != null) {
101 JingleCandidate candidate = new JingleCandidate(
102 nextRandomId(), true);
103 candidate.setHost(streamhost
104 .getAttribute("host"));
105 candidate.setPort(Integer
106 .parseInt(streamhost
107 .getAttribute("port")));
108 candidate
109 .setType(JingleCandidate.TYPE_PROXY);
110 try {
111 candidate.setJid(Jid.fromString(proxy));
112 } catch (final InvalidJidException e) {
113 candidate.setJid(null);
114 }
115 candidate.setPriority(655360 + 65535);
116 primaryCandidates.put(account.getJid().toBareJid(),
117 candidate);
118 listener.onPrimaryCandidateFound(true,
119 candidate);
120 } else {
121 listener.onPrimaryCandidateFound(false,
122 null);
123 }
124 }
125 });
126 } else {
127 listener.onPrimaryCandidateFound(false, null);
128 }
129
130 } else {
131 listener.onPrimaryCandidateFound(true,
132 this.primaryCandidates.get(account.getJid().toBareJid()));
133 }
134 }
135
136 public String nextRandomId() {
137 return new BigInteger(50, random).toString(32);
138 }
139
140 public void deliverIbbPacket(Account account, IqPacket packet) {
141 String sid = null;
142 Element payload = null;
143 if (packet.hasChild("open", "http://jabber.org/protocol/ibb")) {
144 payload = packet
145 .findChild("open", "http://jabber.org/protocol/ibb");
146 sid = payload.getAttribute("sid");
147 } else if (packet.hasChild("data", "http://jabber.org/protocol/ibb")) {
148 payload = packet
149 .findChild("data", "http://jabber.org/protocol/ibb");
150 sid = payload.getAttribute("sid");
151 }
152 if (sid != null) {
153 for (JingleConnection connection : connections) {
154 if (connection.getAccount() == account
155 && connection.hasTransportId(sid)) {
156 JingleTransport transport = connection.getTransport();
157 if (transport instanceof JingleInbandTransport) {
158 JingleInbandTransport inbandTransport = (JingleInbandTransport) transport;
159 inbandTransport.deliverPayload(packet, payload);
160 return;
161 }
162 }
163 }
164 Log.d(Config.LOGTAG,
165 "couldnt deliver payload: " + payload.toString());
166 } else {
167 Log.d(Config.LOGTAG, "no sid found in incomming ibb packet");
168 }
169 }
170
171 public void cancelInTransmission() {
172 for (JingleConnection connection : this.connections) {
173 if (connection.getJingleStatus() == JingleConnection.JINGLE_STATUS_TRANSMITTING) {
174 connection.cancel();
175 }
176 }
177 }
178}