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