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