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