1package eu.siacs.conversations.xmpp;
2
3import android.graphics.Bitmap;
4import android.graphics.BitmapFactory;
5import android.os.Bundle;
6import android.os.Parcelable;
7import android.os.PowerManager;
8import android.os.PowerManager.WakeLock;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15
16import org.json.JSONException;
17import org.json.JSONObject;
18import org.xmlpull.v1.XmlPullParserException;
19
20import java.io.ByteArrayInputStream;
21import java.io.IOException;
22import java.io.InputStream;
23import java.math.BigInteger;
24import java.net.ConnectException;
25import java.net.IDN;
26import java.net.InetAddress;
27import java.net.InetSocketAddress;
28import java.net.Socket;
29import java.net.UnknownHostException;
30import java.net.URL;
31import java.security.KeyManagementException;
32import java.security.NoSuchAlgorithmException;
33import java.security.Principal;
34import java.security.PrivateKey;
35import java.security.cert.X509Certificate;
36import java.util.ArrayList;
37import java.util.HashMap;
38import java.util.Hashtable;
39import java.util.Iterator;
40import java.util.List;
41import java.util.Map.Entry;
42
43import javax.net.ssl.HostnameVerifier;
44import javax.net.ssl.KeyManager;
45import javax.net.ssl.SSLContext;
46import javax.net.ssl.SSLSocket;
47import javax.net.ssl.SSLSocketFactory;
48import javax.net.ssl.X509KeyManager;
49import javax.net.ssl.X509TrustManager;
50
51import de.duenndns.ssl.MemorizingTrustManager;
52import eu.siacs.conversations.Config;
53import eu.siacs.conversations.crypto.XmppDomainVerifier;
54import eu.siacs.conversations.crypto.sasl.DigestMd5;
55import eu.siacs.conversations.crypto.sasl.External;
56import eu.siacs.conversations.crypto.sasl.Plain;
57import eu.siacs.conversations.crypto.sasl.SaslMechanism;
58import eu.siacs.conversations.crypto.sasl.ScramSha1;
59import eu.siacs.conversations.entities.Account;
60import eu.siacs.conversations.entities.Message;
61import eu.siacs.conversations.generator.IqGenerator;
62import eu.siacs.conversations.services.XmppConnectionService;
63import eu.siacs.conversations.utils.CryptoHelper;
64import eu.siacs.conversations.utils.DNSHelper;
65import eu.siacs.conversations.utils.SSLSocketHelper;
66import eu.siacs.conversations.utils.SocksSocketFactory;
67import eu.siacs.conversations.utils.Xmlns;
68import eu.siacs.conversations.xml.Element;
69import eu.siacs.conversations.xml.Tag;
70import eu.siacs.conversations.xml.TagWriter;
71import eu.siacs.conversations.xml.XmlReader;
72import eu.siacs.conversations.xmpp.forms.Data;
73import eu.siacs.conversations.xmpp.forms.Field;
74import eu.siacs.conversations.xmpp.jid.InvalidJidException;
75import eu.siacs.conversations.xmpp.jid.Jid;
76import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
77import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
78import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
79import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
80import eu.siacs.conversations.xmpp.stanzas.IqPacket;
81import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
82import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
83import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
84import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
85import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
86import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
87import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
88import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
89
90public class XmppConnection implements Runnable {
91
92 private static final int PACKET_IQ = 0;
93 private static final int PACKET_MESSAGE = 1;
94 private static final int PACKET_PRESENCE = 2;
95 protected Account account;
96 private final WakeLock wakeLock;
97 private Socket socket;
98 private XmlReader tagReader;
99 private TagWriter tagWriter;
100 private final Features features = new Features(this);
101 private boolean needsBinding = true;
102 private boolean shouldAuthenticate = true;
103 private Element streamFeatures;
104 private final HashMap<Jid, Info> disco = new HashMap<>();
105
106 private String streamId = null;
107 private int smVersion = 3;
108 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
109
110 private int stanzasReceived = 0;
111 private int stanzasSent = 0;
112 private long lastPacketReceived = 0;
113 private long lastPingSent = 0;
114 private long lastConnect = 0;
115 private long lastSessionStarted = 0;
116 private long lastDiscoStarted = 0;
117 private int mPendingServiceDiscoveries = 0;
118 private final ArrayList<String> mPendingServiceDiscoveriesIds = new ArrayList<>();
119 private boolean mInteractive = false;
120 private int attempt = 0;
121 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
122 private OnPresencePacketReceived presenceListener = null;
123 private OnJinglePacketReceived jingleListener = null;
124 private OnIqPacketReceived unregisteredIqListener = null;
125 private OnMessagePacketReceived messageListener = null;
126 private OnStatusChanged statusListener = null;
127 private OnBindListener bindListener = null;
128 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
129 private OnMessageAcknowledged acknowledgedListener = null;
130 private XmppConnectionService mXmppConnectionService = null;
131
132 private SaslMechanism saslMechanism;
133
134 private X509KeyManager mKeyManager = new X509KeyManager() {
135 @Override
136 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
137 return account.getPrivateKeyAlias();
138 }
139
140 @Override
141 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
142 return null;
143 }
144
145 @Override
146 public X509Certificate[] getCertificateChain(String alias) {
147 try {
148 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
149 } catch (Exception e) {
150 return new X509Certificate[0];
151 }
152 }
153
154 @Override
155 public String[] getClientAliases(String s, Principal[] principals) {
156 return new String[0];
157 }
158
159 @Override
160 public String[] getServerAliases(String s, Principal[] principals) {
161 return new String[0];
162 }
163
164 @Override
165 public PrivateKey getPrivateKey(String alias) {
166 try {
167 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
168 } catch (Exception e) {
169 return null;
170 }
171 }
172 };
173 private Identity mServerIdentity = Identity.UNKNOWN;
174
175 private OnIqPacketReceived createPacketReceiveHandler() {
176 return new OnIqPacketReceived() {
177 @Override
178 public void onIqPacketReceived(Account account, IqPacket packet) {
179 if (packet.getType() == IqPacket.TYPE.RESULT) {
180 account.setOption(Account.OPTION_REGISTER,
181 false);
182 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
183 } else if (packet.hasChild("error")
184 && (packet.findChild("error")
185 .hasChild("conflict"))) {
186 changeStatus(Account.State.REGISTRATION_CONFLICT);
187 } else {
188 changeStatus(Account.State.REGISTRATION_FAILED);
189 Log.d(Config.LOGTAG, packet.toString());
190 }
191 disconnect(true);
192 }
193 };
194 }
195
196 public XmppConnection(final Account account, final XmppConnectionService service) {
197 this.account = account;
198 this.wakeLock = service.getPowerManager().newWakeLock(
199 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
200 tagWriter = new TagWriter();
201 mXmppConnectionService = service;
202 }
203
204 protected void changeStatus(final Account.State nextStatus) {
205 if (account.getStatus() != nextStatus) {
206 if ((nextStatus == Account.State.OFFLINE)
207 && (account.getStatus() != Account.State.CONNECTING)
208 && (account.getStatus() != Account.State.ONLINE)
209 && (account.getStatus() != Account.State.DISABLED)) {
210 return;
211 }
212 if (nextStatus == Account.State.ONLINE) {
213 this.attempt = 0;
214 }
215 account.setStatus(nextStatus);
216 if (statusListener != null) {
217 statusListener.onStatusChanged(account);
218 }
219 }
220 }
221
222 protected void connect() {
223 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
224 features.encryptionEnabled = false;
225 lastConnect = SystemClock.elapsedRealtime();
226 lastPingSent = SystemClock.elapsedRealtime();
227 lastDiscoStarted = Long.MAX_VALUE;
228 this.attempt++;
229 switch (account.getJid().getDomainpart()) {
230 case "chat.facebook.com":
231 mServerIdentity = Identity.FACEBOOK;
232 break;
233 case "nimbuzz.com":
234 mServerIdentity = Identity.NIMBUZZ;
235 break;
236 default:
237 mServerIdentity = Identity.UNKNOWN;
238 break;
239 }
240 try {
241 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
242 tagReader = new XmlReader(wakeLock);
243 tagWriter = new TagWriter();
244 this.changeStatus(Account.State.CONNECTING);
245 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
246 if (useTor) {
247 String destination;
248 if (account.getHostname() == null || account.getHostname().isEmpty()) {
249 destination = account.getServer().toString();
250 } else {
251 destination = account.getHostname();
252 }
253 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": connect to "+destination+" via TOR");
254 socket = SocksSocketFactory.createSocketOverTor(destination,account.getPort());
255 startXmpp();
256 } else if (DNSHelper.isIp(account.getServer().toString())) {
257 socket = new Socket();
258 try {
259 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
260 } catch (IOException e) {
261 throw new UnknownHostException();
262 }
263 startXmpp();
264 } else {
265 final Bundle result = DNSHelper.getSRVRecord(account.getServer(), mXmppConnectionService);
266 final ArrayList<Parcelable>values = result.getParcelableArrayList("values");
267 for(Iterator<Parcelable> iterator = values.iterator(); iterator.hasNext();) {
268 final Bundle namePort = (Bundle) iterator.next();
269 try {
270 String srvRecordServer;
271 try {
272 srvRecordServer = IDN.toASCII(namePort.getString("name"));
273 } catch (final IllegalArgumentException e) {
274 // TODO: Handle me?`
275 srvRecordServer = "";
276 }
277 final int srvRecordPort = namePort.getInt("port");
278 final String srvIpServer = namePort.getString("ip");
279 // if tls is true, encryption is implied and must not be started
280 features.encryptionEnabled = namePort.getBoolean("tls");
281 final InetSocketAddress addr;
282 if (srvIpServer != null) {
283 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
284 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
285 + ": using values from dns " + srvRecordServer
286 + "[" + srvIpServer + "]:" + srvRecordPort + " tls: " + features.encryptionEnabled);
287 } else {
288 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
289 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
290 + ": using values from dns "
291 + srvRecordServer + ":" + srvRecordPort + " tls: " + features.encryptionEnabled);
292 }
293
294 if (!features.encryptionEnabled) {
295 socket = new Socket();
296 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
297 } else {
298 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
299 socket = tlsFactoryVerifier.factory.createSocket();
300
301 if (socket == null) {
302 throw new IOException("could not initialize ssl socket");
303 }
304
305 SSLSocketHelper.setSecurity((SSLSocket) socket);
306 SSLSocketHelper.setSNIHost(tlsFactoryVerifier.factory, (SSLSocket) socket, account.getServer().getDomainpart());
307 SSLSocketHelper.setAlpnProtocol(tlsFactoryVerifier.factory, (SSLSocket) socket, "xmpp-client");
308
309 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
310
311 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), ((SSLSocket) socket).getSession())) {
312 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
313 throw new SecurityException();
314 }
315 }
316
317 if (startXmpp())
318 break; // successfully connected to server that speaks xmpp
319 } catch(final SecurityException e) {
320 throw e;
321 } catch (final Throwable e) {
322 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() +"("+e.getClass().getName()+")");
323 if (!iterator.hasNext()) {
324 throw new UnknownHostException();
325 }
326 }
327 }
328 }
329 processStream();
330 } catch (final IncompatibleServerException e) {
331 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
332 } catch (final SecurityException e) {
333 this.changeStatus(Account.State.SECURITY_ERROR);
334 } catch (final UnauthorizedException e) {
335 this.changeStatus(Account.State.UNAUTHORIZED);
336 } catch (final UnknownHostException | ConnectException e) {
337 this.changeStatus(Account.State.SERVER_NOT_FOUND);
338 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
339 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
340 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
341 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
342 this.changeStatus(Account.State.OFFLINE);
343 this.attempt--; //don't count attempt when reconnecting instantly anyway
344 } finally {
345 if (socket != null) {
346 try {
347 socket.close();
348 } catch (IOException e) {
349
350 }
351 }
352 if (wakeLock.isHeld()) {
353 try {
354 wakeLock.release();
355 } catch (final RuntimeException ignored) {
356 }
357 }
358 }
359 }
360
361 /**
362 * Starts xmpp protocol, call after connecting to socket
363 * @return true if server returns with valid xmpp, false otherwise
364 * @throws IOException Unknown tag on connect
365 * @throws XmlPullParserException Bad Xml
366 * @throws NoSuchAlgorithmException Other error
367 */
368 private boolean startXmpp() throws IOException, XmlPullParserException, NoSuchAlgorithmException {
369 tagWriter.setOutputStream(socket.getOutputStream());
370 tagReader.setInputStream(socket.getInputStream());
371 tagWriter.beginDocument();
372 sendStartStream();
373 Tag nextTag;
374 while ((nextTag = tagReader.readTag()) != null) {
375 if (nextTag.isStart("stream")) {
376 return true;
377 } else {
378 throw new IOException("unknown tag on connect");
379 }
380 }
381 if (socket.isConnected()) {
382 socket.close();
383 }
384 return false;
385 }
386
387 private static class TlsFactoryVerifier {
388 private final SSLSocketFactory factory;
389 private final HostnameVerifier verifier;
390
391 public TlsFactoryVerifier(final SSLSocketFactory factory, final HostnameVerifier verifier) throws IOException {
392 this.factory = factory;
393 this.verifier = verifier;
394 if (factory == null || verifier == null) {
395 throw new IOException("could not setup ssl");
396 }
397 }
398 }
399
400 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
401 final SSLContext sc = SSLContext.getInstance("TLS");
402 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
403 KeyManager[] keyManager;
404 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
405 keyManager = new KeyManager[]{mKeyManager};
406 } else {
407 keyManager = null;
408 }
409 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()}, mXmppConnectionService.getRNG());
410 final SSLSocketFactory factory = sc.getSocketFactory();
411 final HostnameVerifier verifier;
412 if (mInteractive) {
413 verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
414 } else {
415 verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
416 }
417
418 return new TlsFactoryVerifier(factory, verifier);
419 }
420
421 @Override
422 public void run() {
423 try {
424 if (socket != null) {
425 socket.close();
426 }
427 } catch (final IOException ignored) {
428
429 }
430 connect();
431 }
432
433 private void processStream() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
434 Tag nextTag = tagReader.readTag();
435 while (nextTag != null && !nextTag.isEnd("stream")) {
436 if (nextTag.isStart("error")) {
437 processStreamError(nextTag);
438 } else if (nextTag.isStart("features")) {
439 processStreamFeatures(nextTag);
440 } else if (nextTag.isStart("proceed")) {
441 switchOverToTls(nextTag);
442 } else if (nextTag.isStart("success")) {
443 final String challenge = tagReader.readElement(nextTag).getContent();
444 try {
445 saslMechanism.getResponse(challenge);
446 } catch (final SaslMechanism.AuthenticationException e) {
447 disconnect(true);
448 Log.e(Config.LOGTAG, String.valueOf(e));
449 }
450 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
451 account.setKey(Account.PINNED_MECHANISM_KEY,
452 String.valueOf(saslMechanism.getPriority()));
453 tagReader.reset();
454 sendStartStream();
455 final Tag tag = tagReader.readTag();
456 if (tag != null && tag.isStart("stream")) {
457 processStream();
458 } else {
459 throw new IOException("server didn't restart stream after successful auth");
460 }
461 break;
462 } else if (nextTag.isStart("failure")) {
463 throw new UnauthorizedException();
464 } else if (nextTag.isStart("challenge")) {
465 final String challenge = tagReader.readElement(nextTag).getContent();
466 final Element response = new Element("response");
467 response.setAttribute("xmlns",
468 "urn:ietf:params:xml:ns:xmpp-sasl");
469 try {
470 response.setContent(saslMechanism.getResponse(challenge));
471 } catch (final SaslMechanism.AuthenticationException e) {
472 // TODO: Send auth abort tag.
473 Log.e(Config.LOGTAG, e.toString());
474 }
475 tagWriter.writeElement(response);
476 } else if (nextTag.isStart("enabled")) {
477 final Element enabled = tagReader.readElement(nextTag);
478 if ("true".equals(enabled.getAttribute("resume"))) {
479 this.streamId = enabled.getAttribute("id");
480 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
481 + ": stream managment(" + smVersion
482 + ") enabled (resumable)");
483 } else {
484 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
485 + ": stream management(" + smVersion + ") enabled");
486 }
487 this.stanzasReceived = 0;
488 final RequestPacket r = new RequestPacket(smVersion);
489 tagWriter.writeStanzaAsync(r);
490 } else if (nextTag.isStart("resumed")) {
491 lastPacketReceived = SystemClock.elapsedRealtime();
492 final Element resumed = tagReader.readElement(nextTag);
493 final String h = resumed.getAttribute("h");
494 try {
495 final int serverCount = Integer.parseInt(h);
496 if (serverCount != stanzasSent) {
497 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
498 + ": session resumed with lost packages");
499 stanzasSent = serverCount;
500 } else {
501 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
502 }
503 acknowledgeStanzaUpTo(serverCount);
504 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
505 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
506 failedStanzas.add(mStanzaQueue.valueAt(i));
507 }
508 mStanzaQueue.clear();
509 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
510 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
511 if (packet instanceof MessagePacket) {
512 MessagePacket message = (MessagePacket) packet;
513 mXmppConnectionService.markMessage(account,
514 message.getTo().toBareJid(),
515 message.getId(),
516 Message.STATUS_UNSEND);
517 }
518 sendPacket(packet);
519 }
520 } catch (final NumberFormatException ignored) {
521 }
522 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
523 changeStatus(Account.State.ONLINE);
524 } else if (nextTag.isStart("r")) {
525 tagReader.readElement(nextTag);
526 if (Config.EXTENDED_SM_LOGGING) {
527 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
528 }
529 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
530 tagWriter.writeStanzaAsync(ack);
531 } else if (nextTag.isStart("a")) {
532 final Element ack = tagReader.readElement(nextTag);
533 lastPacketReceived = SystemClock.elapsedRealtime();
534 try {
535 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
536 acknowledgeStanzaUpTo(serverSequence);
537 } catch (NumberFormatException e) {
538 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
539 }
540 } else if (nextTag.isStart("failed")) {
541 tagReader.readElement(nextTag);
542 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
543 streamId = null;
544 if (account.getStatus() != Account.State.ONLINE) {
545 sendBindRequest();
546 }
547 } else if (nextTag.isStart("iq")) {
548 processIq(nextTag);
549 } else if (nextTag.isStart("message")) {
550 processMessage(nextTag);
551 } else if (nextTag.isStart("presence")) {
552 processPresence(nextTag);
553 }
554 nextTag = tagReader.readTag();
555 }
556 throw new IOException("reached end of stream. last tag was "+nextTag);
557 }
558
559 private void acknowledgeStanzaUpTo(int serverCount) {
560 for (int i = 0; i < mStanzaQueue.size(); ++i) {
561 if (serverCount >= mStanzaQueue.keyAt(i)) {
562 if (Config.EXTENDED_SM_LOGGING) {
563 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
564 }
565 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
566 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
567 MessagePacket packet = (MessagePacket) stanza;
568 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
569 }
570 mStanzaQueue.removeAt(i);
571 i--;
572 }
573 }
574 }
575
576 private Element processPacket(final Tag currentTag, final int packetType)
577 throws XmlPullParserException, IOException {
578 Element element;
579 switch (packetType) {
580 case PACKET_IQ:
581 element = new IqPacket();
582 break;
583 case PACKET_MESSAGE:
584 element = new MessagePacket();
585 break;
586 case PACKET_PRESENCE:
587 element = new PresencePacket();
588 break;
589 default:
590 return null;
591 }
592 element.setAttributes(currentTag.getAttributes());
593 Tag nextTag = tagReader.readTag();
594 if (nextTag == null) {
595 throw new IOException("interrupted mid tag");
596 }
597 while (!nextTag.isEnd(element.getName())) {
598 if (!nextTag.isNo()) {
599 final Element child = tagReader.readElement(nextTag);
600 final String type = currentTag.getAttribute("type");
601 if (packetType == PACKET_IQ
602 && "jingle".equals(child.getName())
603 && ("set".equalsIgnoreCase(type) || "get"
604 .equalsIgnoreCase(type))) {
605 element = new JinglePacket();
606 element.setAttributes(currentTag.getAttributes());
607 }
608 element.addChild(child);
609 }
610 nextTag = tagReader.readTag();
611 if (nextTag == null) {
612 throw new IOException("interrupted mid tag");
613 }
614 }
615 if (stanzasReceived == Integer.MAX_VALUE) {
616 resetStreamId();
617 throw new IOException("time to restart the session. cant handle >2 billion pcks");
618 }
619 ++stanzasReceived;
620 lastPacketReceived = SystemClock.elapsedRealtime();
621 return element;
622 }
623
624 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
625 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
626
627 if (packet.getId() == null) {
628 return; // an iq packet without id is definitely invalid
629 }
630
631 if (packet instanceof JinglePacket) {
632 if (this.jingleListener != null) {
633 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
634 }
635 } else {
636 OnIqPacketReceived callback = null;
637 synchronized (this.packetCallbacks) {
638 if (packetCallbacks.containsKey(packet.getId())) {
639 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
640 // Packets to the server should have responses from the server
641 if (packetCallbackDuple.first.toServer(account)) {
642 if (packet.fromServer(account) || mServerIdentity == Identity.FACEBOOK) {
643 callback = packetCallbackDuple.second;
644 packetCallbacks.remove(packet.getId());
645 } else {
646 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
647 }
648 } else {
649 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
650 callback = packetCallbackDuple.second;
651 packetCallbacks.remove(packet.getId());
652 } else {
653 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
654 }
655 }
656 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
657 callback = this.unregisteredIqListener;
658 }
659 }
660 if (callback != null) {
661 callback.onIqPacketReceived(account,packet);
662 }
663 }
664 }
665
666 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
667 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
668 this.messageListener.onMessagePacketReceived(account, packet);
669 }
670
671 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
672 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
673 this.presenceListener.onPresencePacketReceived(account, packet);
674 }
675
676 private void sendStartTLS() throws IOException {
677 final Tag startTLS = Tag.empty("starttls");
678 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
679 tagWriter.writeTag(startTLS);
680 }
681
682
683
684 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
685 tagReader.readTag();
686 try {
687 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
688 final InetAddress address = socket == null ? null : socket.getInetAddress();
689
690 if (address == null) {
691 throw new IOException("could not setup ssl");
692 }
693
694 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
695
696 if (sslSocket == null) {
697 throw new IOException("could not initialize ssl socket");
698 }
699
700 SSLSocketHelper.setSecurity(sslSocket);
701
702 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), sslSocket.getSession())) {
703 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
704 throw new SecurityException();
705 }
706 tagReader.setInputStream(sslSocket.getInputStream());
707 tagWriter.setOutputStream(sslSocket.getOutputStream());
708 sendStartStream();
709 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
710 features.encryptionEnabled = true;
711 final Tag tag = tagReader.readTag();
712 if (tag != null && tag.isStart("stream")) {
713 processStream();
714 } else {
715 throw new IOException("server didn't restart stream after STARTTLS");
716 }
717 sslSocket.close();
718 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
719 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
720 throw new SecurityException();
721 }
722 }
723
724 private void processStreamFeatures(final Tag currentTag)
725 throws XmlPullParserException, IOException {
726 this.streamFeatures = tagReader.readElement(currentTag);
727 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
728 sendStartTLS();
729 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
730 if (features.encryptionEnabled) {
731 sendRegistryRequest();
732 } else {
733 throw new IncompatibleServerException();
734 }
735 } else if (!this.streamFeatures.hasChild("register")
736 && account.isOptionSet(Account.OPTION_REGISTER)) {
737 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
738 disconnect(true);
739 } else if (this.streamFeatures.hasChild("mechanisms")
740 && shouldAuthenticate && features.encryptionEnabled) {
741 final List<String> mechanisms = extractMechanisms(streamFeatures
742 .findChild("mechanisms"));
743 final Element auth = new Element("auth");
744 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
745 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
746 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
747 } else if (mechanisms.contains("SCRAM-SHA-1")) {
748 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
749 } else if (mechanisms.contains("PLAIN")) {
750 saslMechanism = new Plain(tagWriter, account);
751 } else if (mechanisms.contains("DIGEST-MD5")) {
752 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
753 }
754 if (saslMechanism != null) {
755 final JSONObject keys = account.getKeys();
756 try {
757 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
758 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
759 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
760 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
761 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
762 "). Possible downgrade attack?");
763 throw new SecurityException();
764 }
765 } catch (final JSONException e) {
766 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
767 }
768 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
769 auth.setAttribute("mechanism", saslMechanism.getMechanism());
770 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
771 auth.setContent(saslMechanism.getClientFirstMessage());
772 }
773 tagWriter.writeElement(auth);
774 } else {
775 throw new IncompatibleServerException();
776 }
777 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
778 if (Config.EXTENDED_SM_LOGGING) {
779 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
780 }
781 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
782 this.tagWriter.writeStanzaAsync(resume);
783 } else if (needsBinding) {
784 if (this.streamFeatures.hasChild("bind")) {
785 sendBindRequest();
786 } else {
787 throw new IncompatibleServerException();
788 }
789 }
790 }
791
792 private List<String> extractMechanisms(final Element stream) {
793 final ArrayList<String> mechanisms = new ArrayList<>(stream
794 .getChildren().size());
795 for (final Element child : stream.getChildren()) {
796 mechanisms.add(child.getContent());
797 }
798 return mechanisms;
799 }
800
801 public void sendCaptchaRegistryRequest(String id, Data data) {
802 if (data == null) {
803 setAccountCreationFailed("");
804 } else {
805 IqPacket request = getIqGenerator().generateCreateAccountWithCaptcha(account, id, data);
806 sendIqPacket(request, createPacketReceiveHandler());
807 }
808 }
809
810 private void sendRegistryRequest() {
811 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
812 register.query("jabber:iq:register");
813 register.setTo(account.getServer());
814 sendIqPacket(register, new OnIqPacketReceived() {
815
816 @Override
817 public void onIqPacketReceived(final Account account, final IqPacket packet) {
818 boolean failed = false;
819 if (packet.getType() == IqPacket.TYPE.RESULT
820 && packet.query().hasChild("username")
821 && (packet.query().hasChild("password"))) {
822 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
823 final Element username = new Element("username").setContent(account.getUsername());
824 final Element password = new Element("password").setContent(account.getPassword());
825 register.query("jabber:iq:register").addChild(username);
826 register.query().addChild(password);
827 sendIqPacket(register, createPacketReceiveHandler());
828 } else if (packet.getType() == IqPacket.TYPE.RESULT
829 && (packet.query().hasChild("x", "jabber:x:data"))) {
830 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
831 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
832 final String id = packet.getId();
833
834 Bitmap captcha = null;
835 if (blob != null) {
836 try {
837 final String base64Blob = blob.getContent();
838 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
839 InputStream stream = new ByteArrayInputStream(strBlob);
840 captcha = BitmapFactory.decodeStream(stream);
841 } catch (Exception e) {
842 //ignored
843 }
844 } else {
845 try {
846 Field url = data.getFieldByName("url");
847 String urlString = url.findChildContent("value");
848 URL uri = new URL(urlString);
849 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
850 } catch (IOException e) {
851 Log.e(Config.LOGTAG, e.toString());
852 }
853 }
854
855 if (captcha != null) {
856 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
857 }
858 } else {
859 failed = true;
860 }
861
862 if (failed) {
863 final Element instructions = packet.query().findChild("instructions");
864 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
865 }
866 }
867 });
868 }
869
870 private void setAccountCreationFailed(String instructions) {
871 changeStatus(Account.State.REGISTRATION_FAILED);
872 disconnect(true);
873 Log.d(Config.LOGTAG, account.getJid().toBareJid()
874 + ": could not register. instructions are"
875 + instructions);
876 }
877
878 public void resetEverything() {
879 resetStreamId();
880 clearIqCallbacks();
881 synchronized (this.disco) {
882 disco.clear();
883 }
884 }
885
886 private void sendBindRequest() {
887 while(!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
888 try {
889 Thread.sleep(500);
890 } catch (final InterruptedException ignored) {
891 }
892 }
893 needsBinding = false;
894 clearIqCallbacks();
895 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
896 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
897 .addChild("resource").setContent(account.getResource());
898 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
899 @Override
900 public void onIqPacketReceived(final Account account, final IqPacket packet) {
901 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
902 return;
903 }
904 final Element bind = packet.findChild("bind");
905 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
906 final Element jid = bind.findChild("jid");
907 if (jid != null && jid.getContent() != null) {
908 try {
909 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
910 } catch (final InvalidJidException e) {
911 // TODO: Handle the case where an external JID is technically invalid?
912 }
913 if (streamFeatures.hasChild("session")) {
914 sendStartSession();
915 } else {
916 sendPostBindInitialization();
917 }
918 } else {
919 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
920 disconnect(true);
921 }
922 } else {
923 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
924 disconnect(true);
925 }
926 }
927 });
928 }
929
930 private void clearIqCallbacks() {
931 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
932 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
933 synchronized (this.packetCallbacks) {
934 if (this.packetCallbacks.size() == 0) {
935 return;
936 }
937 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
938 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
939 while (iterator.hasNext()) {
940 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
941 callbacks.add(entry.second);
942 iterator.remove();
943 }
944 }
945 for(OnIqPacketReceived callback : callbacks) {
946 callback.onIqPacketReceived(account,failurePacket);
947 }
948 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
949 }
950
951 public void sendDiscoTimeout() {
952 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.ERROR); //don't use timeout
953 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
954 synchronized (this.mPendingServiceDiscoveriesIds) {
955 for(String id : mPendingServiceDiscoveriesIds) {
956 synchronized (this.packetCallbacks) {
957 Pair<IqPacket, OnIqPacketReceived> pair = this.packetCallbacks.remove(id);
958 if (pair != null) {
959 callbacks.add(pair.second);
960 }
961 }
962 }
963 this.mPendingServiceDiscoveriesIds.clear();
964 }
965 if (callbacks.size() > 0) {
966 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sending disco timeout");
967 resetStreamId(); //we don't want to live with this for ever
968 }
969 for(OnIqPacketReceived callback : callbacks) {
970 callback.onIqPacketReceived(account,failurePacket);
971 }
972 }
973
974 private void sendStartSession() {
975 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
976 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
977 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
978 @Override
979 public void onIqPacketReceived(Account account, IqPacket packet) {
980 if (packet.getType() == IqPacket.TYPE.RESULT) {
981 sendPostBindInitialization();
982 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
983 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
984 disconnect(true);
985 }
986 }
987 });
988 }
989
990 private void sendPostBindInitialization() {
991 smVersion = 0;
992 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
993 smVersion = 3;
994 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
995 smVersion = 2;
996 }
997 if (smVersion != 0) {
998 final EnablePacket enable = new EnablePacket(smVersion);
999 tagWriter.writeStanzaAsync(enable);
1000 stanzasSent = 0;
1001 mStanzaQueue.clear();
1002 }
1003 features.carbonsEnabled = false;
1004 features.blockListRequested = false;
1005 synchronized (this.disco) {
1006 this.disco.clear();
1007 }
1008 mPendingServiceDiscoveries = mServerIdentity == Identity.NIMBUZZ ? 1 : 0;
1009 lastDiscoStarted = SystemClock.elapsedRealtime();
1010 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": starting service discovery");
1011 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1012 sendServiceDiscoveryItems(account.getServer());
1013 sendServiceDiscoveryInfo(account.getServer());
1014 sendServiceDiscoveryInfo(account.getJid().toBareJid());
1015 this.lastSessionStarted = SystemClock.elapsedRealtime();
1016 }
1017
1018 private void sendServiceDiscoveryInfo(final Jid jid) {
1019 if (mServerIdentity != Identity.NIMBUZZ) {
1020 mPendingServiceDiscoveries++;
1021 }
1022 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1023 iq.setTo(jid);
1024 iq.query("http://jabber.org/protocol/disco#info");
1025 String id = this.sendIqPacket(iq, new OnIqPacketReceived() {
1026
1027 @Override
1028 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1029 if (packet.getType() == IqPacket.TYPE.RESULT) {
1030 boolean advancedStreamFeaturesLoaded;
1031 synchronized (XmppConnection.this.disco) {
1032 final List<Element> elements = packet.query().getChildren();
1033 final Info info = new Info();
1034 for (final Element element : elements) {
1035 if (element.getName().equals("identity")) {
1036 String type = element.getAttribute("type");
1037 String category = element.getAttribute("category");
1038 String name = element.getAttribute("name");
1039 if (type != null && category != null) {
1040 info.identities.add(new Pair<>(category, type));
1041 if (mServerIdentity == Identity.UNKNOWN
1042 && type.equals("im")
1043 && category.equals("server")) {
1044 if (name != null && jid.equals(account.getServer())) {
1045 switch (name) {
1046 case "Prosody":
1047 mServerIdentity = Identity.PROSODY;
1048 break;
1049 case "ejabberd":
1050 mServerIdentity = Identity.EJABBERD;
1051 break;
1052 case "Slack-XMPP":
1053 mServerIdentity = Identity.SLACK;
1054 break;
1055 }
1056 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server name: " + name);
1057 }
1058 }
1059 }
1060 } else if (element.getName().equals("feature")) {
1061 info.features.add(element.getAttribute("var"));
1062 }
1063 }
1064 disco.put(jid, info);
1065 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
1066 && disco.containsKey(account.getJid().toBareJid());
1067 }
1068 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
1069 enableAdvancedStreamFeatures();
1070 }
1071 } else {
1072 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
1073 }
1074 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1075 mPendingServiceDiscoveries--;
1076 if (mPendingServiceDiscoveries == 0) {
1077 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": done with service discovery");
1078 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
1079 changeStatus(Account.State.ONLINE);
1080 if (bindListener != null) {
1081 bindListener.onBind(account);
1082 }
1083 }
1084 }
1085 }
1086 });
1087 synchronized (this.mPendingServiceDiscoveriesIds) {
1088 this.mPendingServiceDiscoveriesIds.add(id);
1089 }
1090 }
1091
1092 private void enableAdvancedStreamFeatures() {
1093 if (getFeatures().carbons() && !features.carbonsEnabled) {
1094 sendEnableCarbons();
1095 }
1096 if (getFeatures().blocking() && !features.blockListRequested) {
1097 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
1098 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1099 }
1100 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1101 listener.onAdvancedStreamFeaturesAvailable(account);
1102 }
1103 }
1104
1105 private void sendServiceDiscoveryItems(final Jid server) {
1106 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1107 iq.setTo(server.toDomainJid());
1108 iq.query("http://jabber.org/protocol/disco#items");
1109 this.sendIqPacket(iq, new OnIqPacketReceived() {
1110
1111 @Override
1112 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1113 if (packet.getType() == IqPacket.TYPE.RESULT) {
1114 final List<Element> elements = packet.query().getChildren();
1115 for (final Element element : elements) {
1116 if (element.getName().equals("item")) {
1117 final Jid jid = element.getAttributeAsJid("jid");
1118 if (jid != null && !jid.equals(account.getServer())) {
1119 sendServiceDiscoveryInfo(jid);
1120 }
1121 }
1122 }
1123 } else {
1124 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco items of " + server);
1125 }
1126 }
1127 });
1128 }
1129
1130 private void sendEnableCarbons() {
1131 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1132 iq.addChild("enable", "urn:xmpp:carbons:2");
1133 this.sendIqPacket(iq, new OnIqPacketReceived() {
1134
1135 @Override
1136 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1137 if (!packet.hasChild("error")) {
1138 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1139 + ": successfully enabled carbons");
1140 features.carbonsEnabled = true;
1141 } else {
1142 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1143 + ": error enableing carbons " + packet.toString());
1144 }
1145 }
1146 });
1147 }
1148
1149 private void processStreamError(final Tag currentTag)
1150 throws XmlPullParserException, IOException {
1151 final Element streamError = tagReader.readElement(currentTag);
1152 if (streamError != null && streamError.hasChild("conflict")) {
1153 final String resource = account.getResource().split("\\.")[0];
1154 account.setResource(resource + "." + nextRandomId());
1155 Log.d(Config.LOGTAG,
1156 account.getJid().toBareJid() + ": switching resource due to conflict ("
1157 + account.getResource() + ")");
1158 } else if (streamError != null) {
1159 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1160 }
1161 }
1162
1163 private void sendStartStream() throws IOException {
1164 final Tag stream = Tag.start("stream:stream");
1165 stream.setAttribute("to", account.getServer().toString());
1166 stream.setAttribute("version", "1.0");
1167 stream.setAttribute("xml:lang", "en");
1168 stream.setAttribute("xmlns", "jabber:client");
1169 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1170 tagWriter.writeTag(stream);
1171 }
1172
1173 private String nextRandomId() {
1174 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1175 }
1176
1177 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1178 packet.setFrom(account.getJid());
1179 return this.sendUnmodifiedIqPacket(packet, callback);
1180 }
1181
1182 private synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1183 if (packet.getId() == null) {
1184 final String id = nextRandomId();
1185 packet.setAttribute("id", id);
1186 }
1187 if (callback != null) {
1188 synchronized (this.packetCallbacks) {
1189 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1190 }
1191 }
1192 this.sendPacket(packet);
1193 return packet.getId();
1194 }
1195
1196 public void sendMessagePacket(final MessagePacket packet) {
1197 this.sendPacket(packet);
1198 }
1199
1200 public void sendPresencePacket(final PresencePacket packet) {
1201 this.sendPacket(packet);
1202 }
1203
1204 private synchronized void sendPacket(final AbstractStanza packet) {
1205 if (stanzasSent == Integer.MAX_VALUE) {
1206 resetStreamId();
1207 disconnect(true);
1208 return;
1209 }
1210 tagWriter.writeStanzaAsync(packet);
1211 if (packet instanceof AbstractAcknowledgeableStanza) {
1212 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1213 ++stanzasSent;
1214 this.mStanzaQueue.put(stanzasSent, stanza);
1215 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1216 if (Config.EXTENDED_SM_LOGGING) {
1217 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1218 }
1219 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1220 }
1221 }
1222 }
1223
1224 public void sendPing() {
1225 if (!r()) {
1226 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1227 iq.setFrom(account.getJid());
1228 iq.addChild("ping", "urn:xmpp:ping");
1229 this.sendIqPacket(iq, null);
1230 }
1231 this.lastPingSent = SystemClock.elapsedRealtime();
1232 }
1233
1234 public void setOnMessagePacketReceivedListener(
1235 final OnMessagePacketReceived listener) {
1236 this.messageListener = listener;
1237 }
1238
1239 public void setOnUnregisteredIqPacketReceivedListener(
1240 final OnIqPacketReceived listener) {
1241 this.unregisteredIqListener = listener;
1242 }
1243
1244 public void setOnPresencePacketReceivedListener(
1245 final OnPresencePacketReceived listener) {
1246 this.presenceListener = listener;
1247 }
1248
1249 public void setOnJinglePacketReceivedListener(
1250 final OnJinglePacketReceived listener) {
1251 this.jingleListener = listener;
1252 }
1253
1254 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1255 this.statusListener = listener;
1256 }
1257
1258 public void setOnBindListener(final OnBindListener listener) {
1259 this.bindListener = listener;
1260 }
1261
1262 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1263 this.acknowledgedListener = listener;
1264 }
1265
1266 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1267 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1268 this.advancedStreamFeaturesLoadedListeners.add(listener);
1269 }
1270 }
1271
1272 public void disconnect(final boolean force) {
1273 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force="+Boolean.valueOf(force));
1274 if (force) {
1275 try {
1276 socket.close();
1277 } catch(Exception e) {
1278 Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": exception during force close ("+e.getMessage()+")");
1279 }
1280 return;
1281 } else {
1282 resetStreamId();
1283 if (tagWriter.isActive()) {
1284 tagWriter.finish();
1285 try {
1286 int i = 0;
1287 boolean warned = false;
1288 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1289 if (!warned) {
1290 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1291 warned = true;
1292 }
1293 Thread.sleep(200);
1294 i++;
1295 }
1296 if (warned) {
1297 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1298 }
1299 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closing stream");
1300 tagWriter.writeTag(Tag.end("stream:stream"));
1301 } catch (final IOException e) {
1302 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception during disconnect ("+e.getMessage()+")");
1303 } catch (final InterruptedException e) {
1304 Log.d(Config.LOGTAG, "interrupted");
1305 }
1306 }
1307 }
1308 }
1309
1310 public void resetStreamId() {
1311 this.streamId = null;
1312 }
1313
1314 public List<Jid> findDiscoItemsByFeature(final String feature) {
1315 synchronized (this.disco) {
1316 final List<Jid> items = new ArrayList<>();
1317 for (final Entry<Jid, Info> cursor : this.disco.entrySet()) {
1318 if (cursor.getValue().features.contains(feature)) {
1319 items.add(cursor.getKey());
1320 }
1321 }
1322 return items;
1323 }
1324 }
1325
1326 public Jid findDiscoItemByFeature(final String feature) {
1327 final List<Jid> items = findDiscoItemsByFeature(feature);
1328 if (items.size() >= 1) {
1329 return items.get(0);
1330 }
1331 return null;
1332 }
1333
1334 public boolean r() {
1335 if (getFeatures().sm()) {
1336 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1337 return true;
1338 } else {
1339 return false;
1340 }
1341 }
1342
1343 public String getMucServer() {
1344 synchronized (this.disco) {
1345 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1346 final Info value = cursor.getValue();
1347 if (value.features.contains("http://jabber.org/protocol/muc")
1348 && !value.features.contains("jabber:iq:gateway")
1349 && !value.identities.contains(new Pair<>("conference", "irc"))) {
1350 return cursor.getKey().toString();
1351 }
1352 }
1353 }
1354 return null;
1355 }
1356
1357 public int getTimeToNextAttempt() {
1358 final int interval = (int) (25 * Math.pow(1.5, attempt));
1359 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1360 return interval - secondsSinceLast;
1361 }
1362
1363 public int getAttempt() {
1364 return this.attempt;
1365 }
1366
1367 public Features getFeatures() {
1368 return this.features;
1369 }
1370
1371 public long getLastSessionEstablished() {
1372 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1373 return System.currentTimeMillis() - diff;
1374 }
1375
1376 public long getLastConnect() {
1377 return this.lastConnect;
1378 }
1379
1380 public long getLastPingSent() {
1381 return this.lastPingSent;
1382 }
1383
1384 public long getLastDiscoStarted() {
1385 return this.lastDiscoStarted;
1386 }
1387 public long getLastPacketReceived() {
1388 return this.lastPacketReceived;
1389 }
1390
1391 public void sendActive() {
1392 this.sendPacket(new ActivePacket());
1393 }
1394
1395 public void sendInactive() {
1396 this.sendPacket(new InactivePacket());
1397 }
1398
1399 public void resetAttemptCount() {
1400 this.attempt = 0;
1401 this.lastConnect = 0;
1402 }
1403
1404 public void setInteractive(boolean interactive) {
1405 this.mInteractive = interactive;
1406 }
1407
1408 public Identity getServerIdentity() {
1409 return mServerIdentity;
1410 }
1411
1412 private class Info {
1413 public final ArrayList<String> features = new ArrayList<>();
1414 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1415 }
1416
1417 private class UnauthorizedException extends IOException {
1418
1419 }
1420
1421 private class SecurityException extends IOException {
1422
1423 }
1424
1425 private class IncompatibleServerException extends IOException {
1426
1427 }
1428
1429 public enum Identity {
1430 FACEBOOK,
1431 SLACK,
1432 EJABBERD,
1433 PROSODY,
1434 NIMBUZZ,
1435 UNKNOWN
1436 }
1437
1438 public class Features {
1439 XmppConnection connection;
1440 private boolean carbonsEnabled = false;
1441 private boolean encryptionEnabled = false;
1442 private boolean blockListRequested = false;
1443
1444 public Features(final XmppConnection connection) {
1445 this.connection = connection;
1446 }
1447
1448 private boolean hasDiscoFeature(final Jid server, final String feature) {
1449 synchronized (XmppConnection.this.disco) {
1450 return connection.disco.containsKey(server) &&
1451 connection.disco.get(server).features.contains(feature);
1452 }
1453 }
1454
1455 public boolean carbons() {
1456 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1457 }
1458
1459 public boolean blocking() {
1460 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1461 }
1462
1463 public boolean register() {
1464 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1465 }
1466
1467 public boolean sm() {
1468 return streamId != null
1469 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1470 }
1471
1472 public boolean csi() {
1473 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1474 }
1475
1476 public boolean pep() {
1477 synchronized (XmppConnection.this.disco) {
1478 final Pair<String, String> needle = new Pair<>("pubsub", "pep");
1479 Info info = disco.get(account.getServer());
1480 if (info != null && info.identities.contains(needle)) {
1481 return true;
1482 } else {
1483 info = disco.get(account.getJid().toBareJid());
1484 return info != null && info.identities.contains(needle);
1485 }
1486 }
1487 }
1488
1489 public boolean mam() {
1490 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1491 return true;
1492 } else {
1493 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1494 }
1495 }
1496
1497 public boolean advancedStreamFeaturesLoaded() {
1498 synchronized (XmppConnection.this.disco) {
1499 return disco.containsKey(account.getServer());
1500 }
1501 }
1502
1503 public boolean rosterVersioning() {
1504 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1505 }
1506
1507 public void setBlockListRequested(boolean value) {
1508 this.blockListRequested = value;
1509 }
1510
1511 public boolean httpUpload() {
1512 return !Config.DISABLE_HTTP_UPLOAD && findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1513 }
1514 }
1515
1516 private IqGenerator getIqGenerator() {
1517 return mXmppConnectionService.getIqGenerator();
1518 }
1519}