1package eu.siacs.conversations.xmpp.jingle;
2
3import android.util.Log;
4
5import com.google.common.base.Objects;
6import com.google.common.base.Preconditions;
7
8import java.lang.ref.WeakReference;
9import java.util.HashMap;
10import java.util.HashSet;
11import java.util.Map;
12import java.util.Set;
13import java.util.UUID;
14import java.util.concurrent.ConcurrentHashMap;
15
16import eu.siacs.conversations.Config;
17import eu.siacs.conversations.entities.Account;
18import eu.siacs.conversations.entities.Contact;
19import eu.siacs.conversations.entities.Message;
20import eu.siacs.conversations.entities.Transferable;
21import eu.siacs.conversations.services.AbstractConnectionManager;
22import eu.siacs.conversations.services.XmppConnectionService;
23import eu.siacs.conversations.xml.Element;
24import eu.siacs.conversations.xml.Namespace;
25import eu.siacs.conversations.xmpp.OnIqPacketReceived;
26import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
27import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
28import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
29import eu.siacs.conversations.xmpp.stanzas.IqPacket;
30import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
31import rocks.xmpp.addr.Jid;
32
33public class JingleConnectionManager extends AbstractConnectionManager {
34 private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals = new HashMap<>();
35 private final Map<AbstractJingleConnection.Id, AbstractJingleConnection> connections = new ConcurrentHashMap<>();
36
37 private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
38
39 public JingleConnectionManager(XmppConnectionService service) {
40 super(service);
41 }
42
43 public void deliverPacket(final Account account, final JinglePacket packet) {
44 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
45 final AbstractJingleConnection existingJingleConnection = connections.get(id);
46 if (existingJingleConnection != null) {
47 existingJingleConnection.deliverPacket(packet);
48 } else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
49 final Jid from = packet.getFrom();
50 final Content content = packet.getJingleContent();
51 final String descriptionNamespace = content == null ? null : content.getDescriptionNamespace();
52 final AbstractJingleConnection connection;
53 if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
54 connection = new JingleFileTransferConnection(this, id, from);
55 } else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace)) {
56 connection = new JingleRtpConnection(this, id, from);
57 } else {
58 //TODO return feature-not-implemented
59 return;
60 }
61 connections.put(id, connection);
62 connection.deliverPacket(packet);
63 } else {
64 Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
65 final IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
66 final Element error = response.addChild("error");
67 error.setAttribute("type", "cancel");
68 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
69 error.addChild("unknown-session", "urn:xmpp:jingle:errors:1");
70 account.getXmppConnection().sendIqPacket(response, null);
71 }
72 }
73
74 public void deliverMessage(final Account account, final Jid to, final Jid from, final Element message) {
75 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
76 final String sessionId = message.getAttribute("id");
77 if (sessionId == null) {
78 return;
79 }
80 final Jid with;
81 if (account.getJid().asBareJid().equals(from.asBareJid())) {
82 with = to;
83 } else {
84 with = from;
85 }
86 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received jingle message from " + from + " with=" + with + " " + message);
87 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
88 final AbstractJingleConnection existingJingleConnection = connections.get(id);
89 if (existingJingleConnection != null) {
90 if (existingJingleConnection instanceof JingleRtpConnection) {
91 ((JingleRtpConnection) existingJingleConnection).deliveryMessage(from, message);
92 } else {
93 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + existingJingleConnection.getClass().getName() + " does not support jingle messages");
94 }
95 } else if ("propose".equals(message.getName())) {
96 final Element description = message.findChild("description");
97 final String namespace = description == null ? null : description.getNamespace();
98 if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
99 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, with);
100 this.connections.put(id, rtpConnection);
101 rtpConnection.deliveryMessage(from, message);
102 } else {
103 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to react to proposed " + namespace + " session");
104 }
105 } else if ("proceed".equals(message.getName())) {
106 if (!with.equals(from)) {
107 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignore carbon copied proceed");
108 return;
109 }
110 final RtpSessionProposal proposal = new RtpSessionProposal(account, with.asBareJid(), sessionId);
111 synchronized (rtpSessionProposals) {
112 if (rtpSessionProposals.remove(proposal) != null) {
113 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
114 this.connections.put(id, rtpConnection);
115 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
116 rtpConnection.deliveryMessage(from, message);
117 } else {
118 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + with);
119 }
120 }
121 } else {
122 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retrieved out of order jingle message");
123 }
124
125 }
126
127 public void startJingleFileTransfer(final Message message) {
128 Preconditions.checkArgument(message.isFileOrImage(), "Message is not of type file or image");
129 final Transferable old = message.getTransferable();
130 if (old != null) {
131 old.cancel();
132 }
133 final Account account = message.getConversation().getAccount();
134 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
135 final JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id, account.getJid());
136 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
137 this.connections.put(id, connection);
138 connection.init(message);
139 }
140
141 void finishConnection(final AbstractJingleConnection connection) {
142 this.connections.remove(connection.getId());
143 }
144
145 void getPrimaryCandidate(final Account account, final boolean initiator, final OnPrimaryCandidateFound listener) {
146 if (Config.DISABLE_PROXY_LOOKUP) {
147 listener.onPrimaryCandidateFound(false, null);
148 return;
149 }
150 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
151 final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
152 if (proxy != null) {
153 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
154 iq.setTo(proxy);
155 iq.query(Namespace.BYTE_STREAMS);
156 account.getXmppConnection().sendIqPacket(iq, new OnIqPacketReceived() {
157
158 @Override
159 public void onIqPacketReceived(Account account, IqPacket packet) {
160 final Element streamhost = packet.query().findChild("streamhost", Namespace.BYTE_STREAMS);
161 final String host = streamhost == null ? null : streamhost.getAttribute("host");
162 final String port = streamhost == null ? null : streamhost.getAttribute("port");
163 if (host != null && port != null) {
164 try {
165 JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
166 candidate.setHost(host);
167 candidate.setPort(Integer.parseInt(port));
168 candidate.setType(JingleCandidate.TYPE_PROXY);
169 candidate.setJid(proxy);
170 candidate.setPriority(655360 + (initiator ? 30 : 0));
171 primaryCandidates.put(account.getJid().asBareJid(), candidate);
172 listener.onPrimaryCandidateFound(true, candidate);
173 } catch (final NumberFormatException e) {
174 listener.onPrimaryCandidateFound(false, null);
175 }
176 } else {
177 listener.onPrimaryCandidateFound(false, null);
178 }
179 }
180 });
181 } else {
182 listener.onPrimaryCandidateFound(false, null);
183 }
184
185 } else {
186 listener.onPrimaryCandidateFound(true,
187 this.primaryCandidates.get(account.getJid().asBareJid()));
188 }
189 }
190
191 public void retractSessionProposal(final Account account, final Jid with) {
192 synchronized (this.rtpSessionProposals) {
193 RtpSessionProposal matchingProposal = null;
194 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
195 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
196 matchingProposal = proposal;
197 break;
198 }
199 }
200 if (matchingProposal != null) {
201 this.rtpSessionProposals.remove(matchingProposal);
202 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionRetract(matchingProposal);
203 Log.d(Config.LOGTAG, messagePacket.toString());
204 mXmppConnectionService.sendMessagePacket(account, messagePacket);
205
206 }
207 }
208 }
209
210 public void proposeJingleRtpSession(final Account account, final Jid with) {
211 synchronized (this.rtpSessionProposals) {
212 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
213 RtpSessionProposal proposal = entry.getKey();
214 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
215 final DeviceDiscoveryState preexistingState = entry.getValue();
216 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
217 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
218 account,
219 with,
220 proposal.sessionId,
221 preexistingState.toEndUserState()
222 );
223 return;
224 }
225 }
226 }
227 final RtpSessionProposal proposal = RtpSessionProposal.of(account, with.asBareJid());
228 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
229 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
230 account,
231 proposal.with,
232 proposal.sessionId,
233 RtpEndUserState.FINDING_DEVICE
234 );
235 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
236 Log.d(Config.LOGTAG, messagePacket.toString());
237 mXmppConnectionService.sendMessagePacket(account, messagePacket);
238 }
239 }
240
241 static String nextRandomId() {
242 return UUID.randomUUID().toString();
243 }
244
245 public void deliverIbbPacket(Account account, IqPacket packet) {
246 final String sid;
247 final Element payload;
248 if (packet.hasChild("open", Namespace.IBB)) {
249 payload = packet.findChild("open", Namespace.IBB);
250 sid = payload.getAttribute("sid");
251 } else if (packet.hasChild("data", Namespace.IBB)) {
252 payload = packet.findChild("data", Namespace.IBB);
253 sid = payload.getAttribute("sid");
254 } else if (packet.hasChild("close", Namespace.IBB)) {
255 payload = packet.findChild("close", Namespace.IBB);
256 sid = payload.getAttribute("sid");
257 } else {
258 payload = null;
259 sid = null;
260 }
261 if (sid != null) {
262 for (final AbstractJingleConnection connection : this.connections.values()) {
263 if (connection instanceof JingleFileTransferConnection) {
264 final JingleFileTransferConnection fileTransfer = (JingleFileTransferConnection) connection;
265 final JingleTransport transport = fileTransfer.getTransport();
266 if (transport instanceof JingleInBandTransport) {
267 final JingleInBandTransport inBandTransport = (JingleInBandTransport) transport;
268 if (inBandTransport.matches(account, sid)) {
269 inBandTransport.deliverPayload(packet, payload);
270 }
271 return;
272 }
273 }
274 }
275 }
276 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
277 account.getXmppConnection().sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
278 }
279
280 public void cancelInTransmission() {
281 for (AbstractJingleConnection connection : this.connections.values()) {
282 /*if (connection.getJingleStatus() == JingleFileTransferConnection.JINGLE_STATUS_TRANSMITTING) {
283 connection.abort("connectivity-error");
284 }*/
285 }
286 }
287
288 public WeakReference<JingleRtpConnection> findJingleRtpConnection(Account account, Jid with, String sessionId) {
289 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, Jid.ofEscaped(with), sessionId);
290 final AbstractJingleConnection connection = connections.get(id);
291 if (connection instanceof JingleRtpConnection) {
292 return new WeakReference<>((JingleRtpConnection) connection);
293 }
294 return null;
295 }
296
297 public void updateProposedSessionDiscovered(Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
298 final RtpSessionProposal sessionProposal = new RtpSessionProposal(account, from.asBareJid(), sessionId);
299 synchronized (this.rtpSessionProposals) {
300 final DeviceDiscoveryState currentState = rtpSessionProposals.get(sessionProposal);
301 if (currentState == null) {
302 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
303 return;
304 }
305 if (currentState == DeviceDiscoveryState.DISCOVERED) {
306 Log.d(Config.LOGTAG, "session proposal already at discovered. not going to fall back");
307 return;
308 }
309 this.rtpSessionProposals.put(sessionProposal, target);
310 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, sessionProposal.with, sessionProposal.sessionId, target.toEndUserState());
311 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": flagging session " + sessionId + " as " + target);
312 }
313 }
314
315 public void rejectRtpSession(final String sessionId) {
316 for (final AbstractJingleConnection connection : this.connections.values()) {
317 if (connection.getId().sessionId.equals(sessionId)) {
318 if (connection instanceof JingleRtpConnection) {
319 ((JingleRtpConnection) connection).rejectCall();
320 }
321 }
322 }
323 }
324
325 public static class RtpSessionProposal {
326 private final Account account;
327 public final Jid with;
328 public final String sessionId;
329
330 private RtpSessionProposal(Account account, Jid with, String sessionId) {
331 this.account = account;
332 this.with = with;
333 this.sessionId = sessionId;
334 }
335
336 public static RtpSessionProposal of(Account account, Jid with) {
337 return new RtpSessionProposal(account, with, UUID.randomUUID().toString());
338 }
339
340 @Override
341 public boolean equals(Object o) {
342 if (this == o) return true;
343 if (o == null || getClass() != o.getClass()) return false;
344 RtpSessionProposal proposal = (RtpSessionProposal) o;
345 return Objects.equal(account.getJid(), proposal.account.getJid()) &&
346 Objects.equal(with, proposal.with) &&
347 Objects.equal(sessionId, proposal.sessionId);
348 }
349
350 @Override
351 public int hashCode() {
352 return Objects.hashCode(account.getJid(), with, sessionId);
353 }
354 }
355
356 public enum DeviceDiscoveryState {
357 SEARCHING, DISCOVERED, FAILED;
358
359 public RtpEndUserState toEndUserState() {
360 switch (this) {
361 case SEARCHING:
362 return RtpEndUserState.FINDING_DEVICE;
363 case DISCOVERED:
364 return RtpEndUserState.RINGING;
365 default:
366 return RtpEndUserState.CONNECTIVITY_ERROR;
367 }
368 }
369 }
370}