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.Arrays;
38import java.util.HashMap;
39import java.util.Hashtable;
40import java.util.Iterator;
41import java.util.List;
42import java.util.Map.Entry;
43import java.util.concurrent.atomic.AtomicBoolean;
44import java.util.concurrent.atomic.AtomicInteger;
45
46import javax.net.ssl.HostnameVerifier;
47import javax.net.ssl.KeyManager;
48import javax.net.ssl.SSLContext;
49import javax.net.ssl.SSLSession;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import de.duenndns.ssl.MemorizingTrustManager;
56import eu.siacs.conversations.Config;
57import eu.siacs.conversations.crypto.XmppDomainVerifier;
58import eu.siacs.conversations.crypto.sasl.DigestMd5;
59import eu.siacs.conversations.crypto.sasl.External;
60import eu.siacs.conversations.crypto.sasl.Plain;
61import eu.siacs.conversations.crypto.sasl.SaslMechanism;
62import eu.siacs.conversations.crypto.sasl.ScramSha1;
63import eu.siacs.conversations.entities.Account;
64import eu.siacs.conversations.entities.Message;
65import eu.siacs.conversations.entities.ServiceDiscoveryResult;
66import eu.siacs.conversations.generator.IqGenerator;
67import eu.siacs.conversations.services.XmppConnectionService;
68import eu.siacs.conversations.utils.DNSHelper;
69import eu.siacs.conversations.utils.SSLSocketHelper;
70import eu.siacs.conversations.utils.SocksSocketFactory;
71import eu.siacs.conversations.utils.Xmlns;
72import eu.siacs.conversations.xml.Element;
73import eu.siacs.conversations.xml.Tag;
74import eu.siacs.conversations.xml.TagWriter;
75import eu.siacs.conversations.xml.XmlReader;
76import eu.siacs.conversations.xmpp.forms.Data;
77import eu.siacs.conversations.xmpp.forms.Field;
78import eu.siacs.conversations.xmpp.jid.InvalidJidException;
79import eu.siacs.conversations.xmpp.jid.Jid;
80import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
81import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
82import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
83import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
84import eu.siacs.conversations.xmpp.stanzas.IqPacket;
85import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
86import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
87import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
88import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
89import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
90import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
91import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
92import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
93
94public class XmppConnection implements Runnable {
95
96 private static final int PACKET_IQ = 0;
97 private static final int PACKET_MESSAGE = 1;
98 private static final int PACKET_PRESENCE = 2;
99 protected Account account;
100 private final WakeLock wakeLock;
101 private Socket socket;
102 private XmlReader tagReader;
103 private TagWriter tagWriter;
104 private final Features features = new Features(this);
105 private boolean needsBinding = true;
106 private boolean shouldAuthenticate = true;
107 private Element streamFeatures;
108 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
109
110 private String streamId = null;
111 private int smVersion = 3;
112 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
113
114 private int stanzasReceived = 0;
115 private int stanzasSent = 0;
116 private long lastPacketReceived = 0;
117 private long lastPingSent = 0;
118 private long lastConnect = 0;
119 private long lastSessionStarted = 0;
120 private long lastDiscoStarted = 0;
121 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
122 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
123 private boolean mInteractive = false;
124 private int attempt = 0;
125 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
126 private OnPresencePacketReceived presenceListener = null;
127 private OnJinglePacketReceived jingleListener = null;
128 private OnIqPacketReceived unregisteredIqListener = null;
129 private OnMessagePacketReceived messageListener = null;
130 private OnStatusChanged statusListener = null;
131 private OnBindListener bindListener = null;
132 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
133 private OnMessageAcknowledged acknowledgedListener = null;
134 private XmppConnectionService mXmppConnectionService = null;
135
136 private SaslMechanism saslMechanism;
137
138 private X509KeyManager mKeyManager = new X509KeyManager() {
139 @Override
140 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
141 return account.getPrivateKeyAlias();
142 }
143
144 @Override
145 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
146 return null;
147 }
148
149 @Override
150 public X509Certificate[] getCertificateChain(String alias) {
151 try {
152 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
153 } catch (Exception e) {
154 return new X509Certificate[0];
155 }
156 }
157
158 @Override
159 public String[] getClientAliases(String s, Principal[] principals) {
160 return new String[0];
161 }
162
163 @Override
164 public String[] getServerAliases(String s, Principal[] principals) {
165 return new String[0];
166 }
167
168 @Override
169 public PrivateKey getPrivateKey(String alias) {
170 try {
171 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
172 } catch (Exception e) {
173 return null;
174 }
175 }
176 };
177 private Identity mServerIdentity = Identity.UNKNOWN;
178
179 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
180 @Override
181 public void onIqPacketReceived(Account account, IqPacket packet) {
182 if (packet.getType() == IqPacket.TYPE.RESULT) {
183 account.setOption(Account.OPTION_REGISTER, false);
184 forceCloseSocket();
185 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
186 } else {
187 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
188 "The password is too weak",
189 "Please use a longer password.");
190 Element error = packet.findChild("error");
191 Account.State state = Account.State.REGISTRATION_FAILED;
192 if (error != null) {
193 if (error.hasChild("conflict")) {
194 state = Account.State.REGISTRATION_CONFLICT;
195 } else if (error.hasChild("resource-constraint")
196 && "wait".equals(error.getAttribute("type"))) {
197 state = Account.State.REGISTRATION_PLEASE_WAIT;
198 } else if (error.hasChild("not-acceptable")
199 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
200 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
201 }
202 }
203 changeStatus(state);
204 forceCloseSocket();
205 }
206 }
207 };
208
209 public XmppConnection(final Account account, final XmppConnectionService service) {
210 this.account = account;
211 this.wakeLock = service.getPowerManager().newWakeLock(
212 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
213 tagWriter = new TagWriter();
214 mXmppConnectionService = service;
215 }
216
217 protected void changeStatus(final Account.State nextStatus) {
218 if (account.getStatus() != nextStatus) {
219 if ((nextStatus == Account.State.OFFLINE)
220 && (account.getStatus() != Account.State.CONNECTING)
221 && (account.getStatus() != Account.State.ONLINE)
222 && (account.getStatus() != Account.State.DISABLED)) {
223 return;
224 }
225 if (nextStatus == Account.State.ONLINE) {
226 this.attempt = 0;
227 }
228 account.setStatus(nextStatus);
229 if (statusListener != null) {
230 statusListener.onStatusChanged(account);
231 }
232 }
233 }
234
235 public void prepareNewConnection() {
236 this.lastConnect = SystemClock.elapsedRealtime();
237 this.lastPingSent = SystemClock.elapsedRealtime();
238 this.lastDiscoStarted = Long.MAX_VALUE;
239 this.changeStatus(Account.State.CONNECTING);
240 }
241
242 protected void connect() {
243 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
244 features.encryptionEnabled = false;
245 this.attempt++;
246 switch (account.getJid().getDomainpart()) {
247 case "chat.facebook.com":
248 mServerIdentity = Identity.FACEBOOK;
249 break;
250 case "nimbuzz.com":
251 mServerIdentity = Identity.NIMBUZZ;
252 break;
253 default:
254 mServerIdentity = Identity.UNKNOWN;
255 break;
256 }
257 try {
258 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
259 tagReader = new XmlReader(wakeLock);
260 tagWriter = new TagWriter();
261 this.changeStatus(Account.State.CONNECTING);
262 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
263 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
264 if (useTor) {
265 String destination;
266 if (account.getHostname() == null || account.getHostname().isEmpty()) {
267 destination = account.getServer().toString();
268 } else {
269 destination = account.getHostname();
270 }
271 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": connect to " + destination + " via Tor");
272 socket = SocksSocketFactory.createSocketOverTor(destination, account.getPort());
273 startXmpp();
274 } else if (extended && account.getHostname() != null && !account.getHostname().isEmpty()) {
275
276 InetSocketAddress address = new InetSocketAddress(account.getHostname(), account.getPort());
277
278 features.encryptionEnabled = account.getPort() == 5223;
279
280 try {
281 if (features.encryptionEnabled) {
282 try {
283 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
284 socket = tlsFactoryVerifier.factory.createSocket();
285 socket.connect(address, Config.SOCKET_TIMEOUT * 1000);
286 final SSLSession session = ((SSLSocket) socket).getSession();
287 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), session)) {
288 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
289 throw new SecurityException();
290 }
291 } catch (KeyManagementException e) {
292 features.encryptionEnabled = false;
293 socket = new Socket();
294 }
295 } else {
296 socket = new Socket();
297 socket.connect(address, Config.SOCKET_TIMEOUT * 1000);
298 }
299 } catch (IOException e) {
300 throw new UnknownHostException();
301 }
302 startXmpp();
303 } else if (DNSHelper.isIp(account.getServer().toString())) {
304 socket = new Socket();
305 try {
306 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
307 } catch (IOException e) {
308 throw new UnknownHostException();
309 }
310 startXmpp();
311 } else {
312 final Bundle result = DNSHelper.getSRVRecord(account.getServer(), mXmppConnectionService);
313 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
314 for (Iterator<Parcelable> iterator = values.iterator(); iterator.hasNext(); ) {
315 if (Thread.currentThread().isInterrupted()) {
316 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Thread was interrupted");
317 return;
318 }
319 final Bundle namePort = (Bundle) iterator.next();
320 try {
321 String srvRecordServer;
322 try {
323 srvRecordServer = IDN.toASCII(namePort.getString("name"));
324 } catch (final IllegalArgumentException e) {
325 // TODO: Handle me?`
326 srvRecordServer = "";
327 }
328 final int srvRecordPort = namePort.getInt("port");
329 final String srvIpServer = namePort.getString("ip");
330 // if tls is true, encryption is implied and must not be started
331 features.encryptionEnabled = namePort.getBoolean("tls");
332 final InetSocketAddress addr;
333 if (srvIpServer != null) {
334 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
335 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
336 + ": using values from dns " + srvRecordServer
337 + "[" + srvIpServer + "]:" + srvRecordPort + " tls: " + features.encryptionEnabled);
338 } else {
339 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
340 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
341 + ": using values from dns "
342 + srvRecordServer + ":" + srvRecordPort + " tls: " + features.encryptionEnabled);
343 }
344
345 if (!features.encryptionEnabled) {
346 socket = new Socket();
347 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
348 } else {
349 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
350 socket = tlsFactoryVerifier.factory.createSocket();
351
352 if (socket == null) {
353 throw new IOException("could not initialize ssl socket");
354 }
355
356 SSLSocketHelper.setSecurity((SSLSocket) socket);
357 SSLSocketHelper.setSNIHost(tlsFactoryVerifier.factory, (SSLSocket) socket, account.getServer().getDomainpart());
358 SSLSocketHelper.setAlpnProtocol(tlsFactoryVerifier.factory, (SSLSocket) socket, "xmpp-client");
359
360 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
361
362 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), ((SSLSocket) socket).getSession())) {
363 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
364 throw new SecurityException();
365 }
366 }
367
368 if (startXmpp())
369 break; // successfully connected to server that speaks xmpp
370 } catch (final SecurityException e) {
371 throw e;
372 } catch (final Throwable e) {
373 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
374 if (!iterator.hasNext()) {
375 throw new UnknownHostException();
376 }
377 }
378 }
379 }
380 processStream();
381 } catch (final java.lang.SecurityException e) {
382 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
383 } catch (final IncompatibleServerException e) {
384 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
385 } catch (final SecurityException e) {
386 this.changeStatus(Account.State.SECURITY_ERROR);
387 } catch (final UnauthorizedException e) {
388 this.changeStatus(Account.State.UNAUTHORIZED);
389 } catch (final PaymentRequiredException e) {
390 this.changeStatus(Account.State.PAYMENT_REQUIRED);
391 } catch (final UnknownHostException | ConnectException e) {
392 this.changeStatus(Account.State.SERVER_NOT_FOUND);
393 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
394 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
395 } catch(final StreamErrorHostUnknown e) {
396 this.changeStatus(Account.State.HOST_UNKNOWN);
397 } catch(final StreamErrorPolicyViolation e) {
398 this.changeStatus(Account.State.POLICY_VIOLATION);
399 } catch(final StreamError e) {
400 this.changeStatus(Account.State.STREAM_ERROR);
401 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
402 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
403 this.changeStatus(Account.State.OFFLINE);
404 this.attempt = Math.max(0, this.attempt - 1);
405 } finally {
406 forceCloseSocket();
407 if (wakeLock.isHeld()) {
408 try {
409 wakeLock.release();
410 } catch (final RuntimeException ignored) {
411 }
412 }
413 }
414 }
415
416 /**
417 * Starts xmpp protocol, call after connecting to socket
418 * @return true if server returns with valid xmpp, false otherwise
419 * @throws IOException Unknown tag on connect
420 * @throws XmlPullParserException Bad Xml
421 * @throws NoSuchAlgorithmException Other error
422 */
423 private boolean startXmpp() throws IOException, XmlPullParserException, NoSuchAlgorithmException {
424 tagWriter.setOutputStream(socket.getOutputStream());
425 tagReader.setInputStream(socket.getInputStream());
426 tagWriter.beginDocument();
427 sendStartStream();
428 Tag nextTag;
429 while ((nextTag = tagReader.readTag()) != null) {
430 if (nextTag.isStart("stream")) {
431 return true;
432 } else {
433 throw new IOException("unknown tag on connect");
434 }
435 }
436 if (socket.isConnected()) {
437 socket.close();
438 }
439 return false;
440 }
441
442 private static class TlsFactoryVerifier {
443 private final SSLSocketFactory factory;
444 private final HostnameVerifier verifier;
445
446 public TlsFactoryVerifier(final SSLSocketFactory factory, final HostnameVerifier verifier) throws IOException {
447 this.factory = factory;
448 this.verifier = verifier;
449 if (factory == null || verifier == null) {
450 throw new IOException("could not setup ssl");
451 }
452 }
453 }
454
455 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
456 final SSLContext sc = SSLSocketHelper.getSSLContext();
457 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
458 KeyManager[] keyManager;
459 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
460 keyManager = new KeyManager[]{mKeyManager};
461 } else {
462 keyManager = null;
463 }
464 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()}, mXmppConnectionService.getRNG());
465 final SSLSocketFactory factory = sc.getSocketFactory();
466 final HostnameVerifier verifier;
467 if (mInteractive) {
468 verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
469 } else {
470 verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
471 }
472
473 return new TlsFactoryVerifier(factory, verifier);
474 }
475
476 @Override
477 public void run() {
478 forceCloseSocket();
479 connect();
480 }
481
482 private void processStream() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
483 Tag nextTag = tagReader.readTag();
484 while (nextTag != null && !nextTag.isEnd("stream")) {
485 if (nextTag.isStart("error")) {
486 processStreamError(nextTag);
487 } else if (nextTag.isStart("features")) {
488 processStreamFeatures(nextTag);
489 } else if (nextTag.isStart("proceed")) {
490 switchOverToTls(nextTag);
491 } else if (nextTag.isStart("success")) {
492 final String challenge = tagReader.readElement(nextTag).getContent();
493 try {
494 saslMechanism.getResponse(challenge);
495 } catch (final SaslMechanism.AuthenticationException e) {
496 disconnect(true);
497 Log.e(Config.LOGTAG, String.valueOf(e));
498 }
499 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
500 account.setKey(Account.PINNED_MECHANISM_KEY,
501 String.valueOf(saslMechanism.getPriority()));
502 tagReader.reset();
503 sendStartStream();
504 final Tag tag = tagReader.readTag();
505 if (tag != null && tag.isStart("stream")) {
506 processStream();
507 } else {
508 throw new IOException("server didn't restart stream after successful auth");
509 }
510 break;
511 } else if (nextTag.isStart("failure")) {
512 final Element failure = tagReader.readElement(nextTag);
513 final String text = failure.findChildContent("text");
514 if (failure.hasChild("account-disabled")
515 && text != null
516 && text.contains("renew")
517 && Config.MAGIC_CREATE_DOMAIN != null
518 && text.contains(Config.MAGIC_CREATE_DOMAIN)) {
519 throw new PaymentRequiredException();
520 } else {
521 throw new UnauthorizedException();
522 }
523 } else if (nextTag.isStart("challenge")) {
524 final String challenge = tagReader.readElement(nextTag).getContent();
525 final Element response = new Element("response");
526 response.setAttribute("xmlns",
527 "urn:ietf:params:xml:ns:xmpp-sasl");
528 try {
529 response.setContent(saslMechanism.getResponse(challenge));
530 } catch (final SaslMechanism.AuthenticationException e) {
531 // TODO: Send auth abort tag.
532 Log.e(Config.LOGTAG, e.toString());
533 }
534 tagWriter.writeElement(response);
535 } else if (nextTag.isStart("enabled")) {
536 final Element enabled = tagReader.readElement(nextTag);
537 if ("true".equals(enabled.getAttribute("resume"))) {
538 this.streamId = enabled.getAttribute("id");
539 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
540 + ": stream management(" + smVersion
541 + ") enabled (resumable)");
542 } else {
543 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
544 + ": stream management(" + smVersion + ") enabled");
545 }
546 this.stanzasReceived = 0;
547 final RequestPacket r = new RequestPacket(smVersion);
548 tagWriter.writeStanzaAsync(r);
549 } else if (nextTag.isStart("resumed")) {
550 lastPacketReceived = SystemClock.elapsedRealtime();
551 final Element resumed = tagReader.readElement(nextTag);
552 final String h = resumed.getAttribute("h");
553 try {
554 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
555 synchronized (this.mStanzaQueue) {
556 final int serverCount = Integer.parseInt(h);
557 if (serverCount != stanzasSent) {
558 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
559 + ": session resumed with lost packages");
560 stanzasSent = serverCount;
561 } else {
562 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
563 }
564 acknowledgeStanzaUpTo(serverCount);
565 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
566 failedStanzas.add(mStanzaQueue.valueAt(i));
567 }
568 mStanzaQueue.clear();
569 }
570 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
571 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
572 if (packet instanceof MessagePacket) {
573 MessagePacket message = (MessagePacket) packet;
574 mXmppConnectionService.markMessage(account,
575 message.getTo().toBareJid(),
576 message.getId(),
577 Message.STATUS_UNSEND);
578 }
579 sendPacket(packet);
580 }
581 } catch (final NumberFormatException ignored) {
582 }
583 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
584 changeStatus(Account.State.ONLINE);
585 } else if (nextTag.isStart("r")) {
586 tagReader.readElement(nextTag);
587 if (Config.EXTENDED_SM_LOGGING) {
588 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
589 }
590 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
591 tagWriter.writeStanzaAsync(ack);
592 } else if (nextTag.isStart("a")) {
593 final Element ack = tagReader.readElement(nextTag);
594 lastPacketReceived = SystemClock.elapsedRealtime();
595 try {
596 synchronized (this.mStanzaQueue) {
597 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
598 acknowledgeStanzaUpTo(serverSequence);
599 }
600 } catch (NumberFormatException | NullPointerException e) {
601 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
602 }
603 } else if (nextTag.isStart("failed")) {
604 Element failed = tagReader.readElement(nextTag);
605 try {
606 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
607 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resumption failed but server acknowledged stanza #"+serverCount);
608 synchronized (this.mStanzaQueue) {
609 acknowledgeStanzaUpTo(serverCount);
610 }
611 } catch (NumberFormatException | NullPointerException e) {
612 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resumption failed");
613 }
614 resetStreamId();
615 if (account.getStatus() != Account.State.ONLINE) {
616 sendBindRequest();
617 }
618 } else if (nextTag.isStart("iq")) {
619 processIq(nextTag);
620 } else if (nextTag.isStart("message")) {
621 processMessage(nextTag);
622 } else if (nextTag.isStart("presence")) {
623 processPresence(nextTag);
624 }
625 nextTag = tagReader.readTag();
626 }
627 }
628
629 private void acknowledgeStanzaUpTo(int serverCount) {
630 for (int i = 0; i < mStanzaQueue.size(); ++i) {
631 if (serverCount >= mStanzaQueue.keyAt(i)) {
632 if (Config.EXTENDED_SM_LOGGING) {
633 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
634 }
635 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
636 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
637 MessagePacket packet = (MessagePacket) stanza;
638 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
639 }
640 mStanzaQueue.removeAt(i);
641 i--;
642 }
643 }
644 }
645
646 private Element processPacket(final Tag currentTag, final int packetType)
647 throws XmlPullParserException, IOException {
648 Element element;
649 switch (packetType) {
650 case PACKET_IQ:
651 element = new IqPacket();
652 break;
653 case PACKET_MESSAGE:
654 element = new MessagePacket();
655 break;
656 case PACKET_PRESENCE:
657 element = new PresencePacket();
658 break;
659 default:
660 return null;
661 }
662 element.setAttributes(currentTag.getAttributes());
663 Tag nextTag = tagReader.readTag();
664 if (nextTag == null) {
665 throw new IOException("interrupted mid tag");
666 }
667 while (!nextTag.isEnd(element.getName())) {
668 if (!nextTag.isNo()) {
669 final Element child = tagReader.readElement(nextTag);
670 final String type = currentTag.getAttribute("type");
671 if (packetType == PACKET_IQ
672 && "jingle".equals(child.getName())
673 && ("set".equalsIgnoreCase(type) || "get"
674 .equalsIgnoreCase(type))) {
675 element = new JinglePacket();
676 element.setAttributes(currentTag.getAttributes());
677 }
678 element.addChild(child);
679 }
680 nextTag = tagReader.readTag();
681 if (nextTag == null) {
682 throw new IOException("interrupted mid tag");
683 }
684 }
685 if (stanzasReceived == Integer.MAX_VALUE) {
686 resetStreamId();
687 throw new IOException("time to restart the session. cant handle >2 billion pcks");
688 }
689 ++stanzasReceived;
690 lastPacketReceived = SystemClock.elapsedRealtime();
691 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
692 Log.d(Config.LOGTAG,"[background stanza] "+element);
693 }
694 return element;
695 }
696
697 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
698 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
699
700 if (packet.getId() == null) {
701 return; // an iq packet without id is definitely invalid
702 }
703
704 if (packet instanceof JinglePacket) {
705 if (this.jingleListener != null) {
706 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
707 }
708 } else {
709 OnIqPacketReceived callback = null;
710 synchronized (this.packetCallbacks) {
711 if (packetCallbacks.containsKey(packet.getId())) {
712 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
713 // Packets to the server should have responses from the server
714 if (packetCallbackDuple.first.toServer(account)) {
715 if (packet.fromServer(account) || mServerIdentity == Identity.FACEBOOK) {
716 callback = packetCallbackDuple.second;
717 packetCallbacks.remove(packet.getId());
718 } else {
719 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
720 }
721 } else {
722 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
723 callback = packetCallbackDuple.second;
724 packetCallbacks.remove(packet.getId());
725 } else {
726 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
727 }
728 }
729 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
730 callback = this.unregisteredIqListener;
731 }
732 }
733 if (callback != null) {
734 callback.onIqPacketReceived(account,packet);
735 }
736 }
737 }
738
739 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
740 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
741 this.messageListener.onMessagePacketReceived(account, packet);
742 }
743
744 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
745 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
746 this.presenceListener.onPresencePacketReceived(account, packet);
747 }
748
749 private void sendStartTLS() throws IOException {
750 final Tag startTLS = Tag.empty("starttls");
751 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
752 tagWriter.writeTag(startTLS);
753 }
754
755
756
757 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
758 tagReader.readTag();
759 try {
760 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
761 final InetAddress address = socket == null ? null : socket.getInetAddress();
762
763 if (address == null) {
764 throw new IOException("could not setup ssl");
765 }
766
767 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
768
769 if (sslSocket == null) {
770 throw new IOException("could not initialize ssl socket");
771 }
772
773 SSLSocketHelper.setSecurity(sslSocket);
774
775 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), sslSocket.getSession())) {
776 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
777 throw new SecurityException();
778 }
779 tagReader.setInputStream(sslSocket.getInputStream());
780 tagWriter.setOutputStream(sslSocket.getOutputStream());
781 sendStartStream();
782 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
783 features.encryptionEnabled = true;
784 final Tag tag = tagReader.readTag();
785 if (tag != null && tag.isStart("stream")) {
786 processStream();
787 } else {
788 throw new IOException("server didn't restart stream after STARTTLS");
789 }
790 sslSocket.close();
791 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
792 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
793 throw new SecurityException();
794 }
795 }
796
797 private void processStreamFeatures(final Tag currentTag)
798 throws XmlPullParserException, IOException {
799 this.streamFeatures = tagReader.readElement(currentTag);
800 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
801 sendStartTLS();
802 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
803 if (features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS) {
804 sendRegistryRequest();
805 } else {
806 throw new IncompatibleServerException();
807 }
808 } else if (!this.streamFeatures.hasChild("register")
809 && account.isOptionSet(Account.OPTION_REGISTER)) {
810 forceCloseSocket();
811 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
812 } else if (this.streamFeatures.hasChild("mechanisms")
813 && shouldAuthenticate
814 && (features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS)) {
815 authenticate();
816 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
817 if (Config.EXTENDED_SM_LOGGING) {
818 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
819 }
820 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
821 this.tagWriter.writeStanzaAsync(resume);
822 } else if (needsBinding) {
823 if (this.streamFeatures.hasChild("bind")) {
824 sendBindRequest();
825 } else {
826 throw new IncompatibleServerException();
827 }
828 }
829 }
830
831 private void authenticate() throws IOException {
832 final List<String> mechanisms = extractMechanisms(streamFeatures
833 .findChild("mechanisms"));
834 final Element auth = new Element("auth");
835 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
836 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
837 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
838 } else if (mechanisms.contains("SCRAM-SHA-1")) {
839 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
840 } else if (mechanisms.contains("PLAIN")) {
841 saslMechanism = new Plain(tagWriter, account);
842 } else if (mechanisms.contains("DIGEST-MD5")) {
843 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
844 }
845 if (saslMechanism != null) {
846 final JSONObject keys = account.getKeys();
847 try {
848 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
849 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
850 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
851 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
852 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
853 "). Possible downgrade attack?");
854 throw new SecurityException();
855 }
856 } catch (final JSONException e) {
857 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
858 }
859 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
860 auth.setAttribute("mechanism", saslMechanism.getMechanism());
861 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
862 auth.setContent(saslMechanism.getClientFirstMessage());
863 }
864 tagWriter.writeElement(auth);
865 } else {
866 throw new IncompatibleServerException();
867 }
868 }
869
870 private List<String> extractMechanisms(final Element stream) {
871 final ArrayList<String> mechanisms = new ArrayList<>(stream
872 .getChildren().size());
873 for (final Element child : stream.getChildren()) {
874 mechanisms.add(child.getContent());
875 }
876 return mechanisms;
877 }
878
879 private void sendRegistryRequest() {
880 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
881 register.query("jabber:iq:register");
882 register.setTo(account.getServer());
883 sendUnmodifiedIqPacket(register, new OnIqPacketReceived() {
884
885 @Override
886 public void onIqPacketReceived(final Account account, final IqPacket packet) {
887 boolean failed = false;
888 if (packet.getType() == IqPacket.TYPE.RESULT
889 && packet.query().hasChild("username")
890 && (packet.query().hasChild("password"))) {
891 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
892 final Element username = new Element("username").setContent(account.getUsername());
893 final Element password = new Element("password").setContent(account.getPassword());
894 register.query("jabber:iq:register").addChild(username);
895 register.query().addChild(password);
896 register.setFrom(account.getJid().toBareJid());
897 sendUnmodifiedIqPacket(register, registrationResponseListener);
898 } else if (packet.getType() == IqPacket.TYPE.RESULT
899 && (packet.query().hasChild("x", "jabber:x:data"))) {
900 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
901 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
902 final String id = packet.getId();
903
904 Bitmap captcha = null;
905 if (blob != null) {
906 try {
907 final String base64Blob = blob.getContent();
908 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
909 InputStream stream = new ByteArrayInputStream(strBlob);
910 captcha = BitmapFactory.decodeStream(stream);
911 } catch (Exception e) {
912 //ignored
913 }
914 } else {
915 try {
916 Field url = data.getFieldByName("url");
917 String urlString = url.findChildContent("value");
918 URL uri = new URL(urlString);
919 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
920 } catch (IOException e) {
921 Log.e(Config.LOGTAG, e.toString());
922 }
923 }
924
925 if (captcha != null) {
926 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
927 }
928 } else {
929 failed = true;
930 }
931
932 if (failed) {
933 final Element instructions = packet.query().findChild("instructions");
934 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
935 }
936 }
937 });
938 }
939
940 private void setAccountCreationFailed(String instructions) {
941 changeStatus(Account.State.REGISTRATION_FAILED);
942 disconnect(true);
943 Log.d(Config.LOGTAG, account.getJid().toBareJid()
944 + ": could not register. instructions are"
945 + instructions);
946 }
947
948 public void resetEverything() {
949 resetAttemptCount();
950 resetStreamId();
951 clearIqCallbacks();
952 mStanzaQueue.clear();
953 synchronized (this.disco) {
954 disco.clear();
955 }
956 }
957
958 private void sendBindRequest() {
959 while(!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
960 try {
961 Thread.sleep(500);
962 } catch (final InterruptedException ignored) {
963 }
964 }
965 needsBinding = false;
966 clearIqCallbacks();
967 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
968 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
969 .addChild("resource").setContent(account.getResource());
970 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
971 @Override
972 public void onIqPacketReceived(final Account account, final IqPacket packet) {
973 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
974 return;
975 }
976 final Element bind = packet.findChild("bind");
977 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
978 final Element jid = bind.findChild("jid");
979 if (jid != null && jid.getContent() != null) {
980 try {
981 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
982 if (streamFeatures.hasChild("session")
983 && !streamFeatures.findChild("session").hasChild("optional")) {
984 sendStartSession();
985 } else {
986 sendPostBindInitialization();
987 }
988 return;
989 } catch (final InvalidJidException e) {
990 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server reported invalid jid ("+jid.getContent()+") on bind");
991 }
992 } else {
993 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
994 }
995 } else {
996 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
997 }
998 forceCloseSocket();
999 changeStatus(Account.State.BIND_FAILURE);
1000 }
1001 });
1002 }
1003
1004 private void clearIqCallbacks() {
1005 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1006 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1007 synchronized (this.packetCallbacks) {
1008 if (this.packetCallbacks.size() == 0) {
1009 return;
1010 }
1011 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
1012 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1013 while (iterator.hasNext()) {
1014 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1015 callbacks.add(entry.second);
1016 iterator.remove();
1017 }
1018 }
1019 for(OnIqPacketReceived callback : callbacks) {
1020 callback.onIqPacketReceived(account,failurePacket);
1021 }
1022 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1023 }
1024
1025 public void sendDiscoTimeout() {
1026 if (mWaitForDisco.compareAndSet(true, false)) {
1027 finalizeBind();
1028 }
1029 }
1030
1031 private void sendStartSession() {
1032 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sending legacy session to outdated server");
1033 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1034 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1035 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
1036 @Override
1037 public void onIqPacketReceived(Account account, IqPacket packet) {
1038 if (packet.getType() == IqPacket.TYPE.RESULT) {
1039 sendPostBindInitialization();
1040 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1041 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
1042 disconnect(true);
1043 }
1044 }
1045 });
1046 }
1047
1048 private void sendPostBindInitialization() {
1049 smVersion = 0;
1050 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1051 smVersion = 3;
1052 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1053 smVersion = 2;
1054 }
1055 if (smVersion != 0) {
1056 synchronized (this.mStanzaQueue) {
1057 final EnablePacket enable = new EnablePacket(smVersion);
1058 tagWriter.writeStanzaAsync(enable);
1059 stanzasSent = 0;
1060 mStanzaQueue.clear();
1061 }
1062 }
1063 features.carbonsEnabled = false;
1064 features.blockListRequested = false;
1065 synchronized (this.disco) {
1066 this.disco.clear();
1067 }
1068 mPendingServiceDiscoveries.set(0);
1069 mWaitForDisco.set(mServerIdentity != Identity.NIMBUZZ);
1070 lastDiscoStarted = SystemClock.elapsedRealtime();
1071 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": starting service discovery");
1072 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1073 Element caps = streamFeatures.findChild("c");
1074 final String hash = caps == null ? null : caps.getAttribute("hash");
1075 final String ver = caps == null ? null : caps.getAttribute("ver");
1076 ServiceDiscoveryResult discoveryResult = null;
1077 if (hash != null && ver != null) {
1078 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1079 }
1080 if (discoveryResult == null) {
1081 sendServiceDiscoveryInfo(account.getServer());
1082 } else {
1083 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server caps came from cache");
1084 disco.put(account.getServer(), discoveryResult);
1085 }
1086 sendServiceDiscoveryInfo(account.getJid().toBareJid());
1087 sendServiceDiscoveryItems(account.getServer());
1088
1089 if (!mWaitForDisco.get()) {
1090 finalizeBind();
1091 }
1092 this.lastSessionStarted = SystemClock.elapsedRealtime();
1093 }
1094
1095 private void sendServiceDiscoveryInfo(final Jid jid) {
1096 mPendingServiceDiscoveries.incrementAndGet();
1097 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1098 iq.setTo(jid);
1099 iq.query("http://jabber.org/protocol/disco#info");
1100 this.sendIqPacket(iq, new OnIqPacketReceived() {
1101
1102 @Override
1103 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1104 if (packet.getType() == IqPacket.TYPE.RESULT) {
1105 boolean advancedStreamFeaturesLoaded;
1106 synchronized (XmppConnection.this.disco) {
1107 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1108 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1109 if (mServerIdentity == Identity.UNKNOWN && id.getType().equals("im") &&
1110 id.getCategory().equals("server") && id.getName() != null &&
1111 jid.equals(account.getServer())) {
1112 switch (id.getName()) {
1113 case "Prosody":
1114 mServerIdentity = Identity.PROSODY;
1115 break;
1116 case "ejabberd":
1117 mServerIdentity = Identity.EJABBERD;
1118 break;
1119 case "Slack-XMPP":
1120 mServerIdentity = Identity.SLACK;
1121 break;
1122 }
1123 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server name: " + id.getName());
1124 }
1125 }
1126 if (jid.equals(account.getServer())) {
1127 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1128 }
1129 disco.put(jid, result);
1130 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
1131 && disco.containsKey(account.getJid().toBareJid());
1132 }
1133 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
1134 enableAdvancedStreamFeatures();
1135 }
1136 } else {
1137 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
1138 }
1139 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1140 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1141 && mWaitForDisco.compareAndSet(true, false)) {
1142 finalizeBind();
1143 }
1144 }
1145 }
1146 });
1147 }
1148
1149 private void finalizeBind() {
1150 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
1151 if (bindListener != null) {
1152 bindListener.onBind(account);
1153 }
1154 changeStatus(Account.State.ONLINE);
1155 }
1156
1157 private void enableAdvancedStreamFeatures() {
1158 if (getFeatures().carbons() && !features.carbonsEnabled) {
1159 sendEnableCarbons();
1160 }
1161 if (getFeatures().blocking() && !features.blockListRequested) {
1162 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
1163 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1164 }
1165 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1166 listener.onAdvancedStreamFeaturesAvailable(account);
1167 }
1168 }
1169
1170 private void sendServiceDiscoveryItems(final Jid server) {
1171 mPendingServiceDiscoveries.incrementAndGet();
1172 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1173 iq.setTo(server.toDomainJid());
1174 iq.query("http://jabber.org/protocol/disco#items");
1175 this.sendIqPacket(iq, new OnIqPacketReceived() {
1176
1177 @Override
1178 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1179 if (packet.getType() == IqPacket.TYPE.RESULT) {
1180 final List<Element> elements = packet.query().getChildren();
1181 for (final Element element : elements) {
1182 if (element.getName().equals("item")) {
1183 final Jid jid = element.getAttributeAsJid("jid");
1184 if (jid != null && !jid.equals(account.getServer())) {
1185 sendServiceDiscoveryInfo(jid);
1186 }
1187 }
1188 }
1189 } else {
1190 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco items of " + server);
1191 }
1192 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1193 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1194 && mWaitForDisco.compareAndSet(true, false)) {
1195 finalizeBind();
1196 }
1197 }
1198 }
1199 });
1200 }
1201
1202 private void sendEnableCarbons() {
1203 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1204 iq.addChild("enable", "urn:xmpp:carbons:2");
1205 this.sendIqPacket(iq, new OnIqPacketReceived() {
1206
1207 @Override
1208 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1209 if (!packet.hasChild("error")) {
1210 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1211 + ": successfully enabled carbons");
1212 features.carbonsEnabled = true;
1213 } else {
1214 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1215 + ": error enableing carbons " + packet.toString());
1216 }
1217 }
1218 });
1219 }
1220
1221 private void processStreamError(final Tag currentTag)
1222 throws XmlPullParserException, IOException {
1223 final Element streamError = tagReader.readElement(currentTag);
1224 if (streamError == null) {
1225 return;
1226 }
1227 if (streamError.hasChild("conflict")) {
1228 final String resource = account.getResource().split("\\.")[0];
1229 account.setResource(resource + "." + nextRandomId());
1230 Log.d(Config.LOGTAG,
1231 account.getJid().toBareJid() + ": switching resource due to conflict ("
1232 + account.getResource() + ")");
1233 throw new IOException();
1234 } else if (streamError.hasChild("host-unknown")) {
1235 throw new StreamErrorHostUnknown();
1236 } else if (streamError.hasChild("policy-violation")) {
1237 throw new StreamErrorPolicyViolation();
1238 } else {
1239 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1240 throw new StreamError();
1241 }
1242 }
1243
1244 private void sendStartStream() throws IOException {
1245 final Tag stream = Tag.start("stream:stream");
1246 stream.setAttribute("to", account.getServer().toString());
1247 stream.setAttribute("version", "1.0");
1248 stream.setAttribute("xml:lang", "en");
1249 stream.setAttribute("xmlns", "jabber:client");
1250 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1251 tagWriter.writeTag(stream);
1252 }
1253
1254 private String nextRandomId() {
1255 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1256 }
1257
1258 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1259 packet.setFrom(account.getJid());
1260 return this.sendUnmodifiedIqPacket(packet, callback);
1261 }
1262
1263 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1264 if (packet.getId() == null) {
1265 final String id = nextRandomId();
1266 packet.setAttribute("id", id);
1267 }
1268 if (callback != null) {
1269 synchronized (this.packetCallbacks) {
1270 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1271 }
1272 }
1273 this.sendPacket(packet);
1274 return packet.getId();
1275 }
1276
1277 public void sendMessagePacket(final MessagePacket packet) {
1278 this.sendPacket(packet);
1279 }
1280
1281 public void sendPresencePacket(final PresencePacket packet) {
1282 this.sendPacket(packet);
1283 }
1284
1285 private synchronized void sendPacket(final AbstractStanza packet) {
1286 if (stanzasSent == Integer.MAX_VALUE) {
1287 resetStreamId();
1288 disconnect(true);
1289 return;
1290 }
1291 synchronized (this.mStanzaQueue) {
1292 tagWriter.writeStanzaAsync(packet);
1293 if (packet instanceof AbstractAcknowledgeableStanza) {
1294 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1295 ++stanzasSent;
1296 this.mStanzaQueue.append(stanzasSent, stanza);
1297 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1298 if (Config.EXTENDED_SM_LOGGING) {
1299 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1300 }
1301 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1302 }
1303 }
1304 }
1305 }
1306
1307 public void sendPing() {
1308 if (!r()) {
1309 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1310 iq.setFrom(account.getJid());
1311 iq.addChild("ping", "urn:xmpp:ping");
1312 this.sendIqPacket(iq, null);
1313 }
1314 this.lastPingSent = SystemClock.elapsedRealtime();
1315 }
1316
1317 public void setOnMessagePacketReceivedListener(
1318 final OnMessagePacketReceived listener) {
1319 this.messageListener = listener;
1320 }
1321
1322 public void setOnUnregisteredIqPacketReceivedListener(
1323 final OnIqPacketReceived listener) {
1324 this.unregisteredIqListener = listener;
1325 }
1326
1327 public void setOnPresencePacketReceivedListener(
1328 final OnPresencePacketReceived listener) {
1329 this.presenceListener = listener;
1330 }
1331
1332 public void setOnJinglePacketReceivedListener(
1333 final OnJinglePacketReceived listener) {
1334 this.jingleListener = listener;
1335 }
1336
1337 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1338 this.statusListener = listener;
1339 }
1340
1341 public void setOnBindListener(final OnBindListener listener) {
1342 this.bindListener = listener;
1343 }
1344
1345 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1346 this.acknowledgedListener = listener;
1347 }
1348
1349 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1350 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1351 this.advancedStreamFeaturesLoadedListeners.add(listener);
1352 }
1353 }
1354
1355 public void waitForPush() {
1356 if (tagWriter.isActive()) {
1357 tagWriter.finish();
1358 new Thread(new Runnable() {
1359 @Override
1360 public void run() {
1361 try {
1362 while(!tagWriter.finished()) {
1363 Thread.sleep(10);
1364 }
1365 socket.close();
1366 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closed tcp without closing stream");
1367 changeStatus(Account.State.OFFLINE);
1368 } catch (IOException | InterruptedException e) {
1369 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": error while closing socket for waitForPush()");
1370 }
1371 }
1372 }).start();
1373 } else {
1374 forceCloseSocket();
1375 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": closed tcp without closing stream (no waiting)");
1376 }
1377 }
1378
1379 private void forceCloseSocket() {
1380 if (socket != null) {
1381 try {
1382 socket.close();
1383 } catch (IOException e) {
1384 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception "+e.getMessage()+" during force close");
1385 }
1386 } else {
1387 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": socket was null during force close");
1388 }
1389 }
1390
1391 public void interrupt() {
1392 Thread.currentThread().interrupt();
1393 }
1394
1395 public void disconnect(final boolean force) {
1396 interrupt();
1397 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force="+Boolean.valueOf(force));
1398 if (force) {
1399 tagWriter.forceClose();
1400 forceCloseSocket();
1401 } else {
1402 if (tagWriter.isActive()) {
1403 tagWriter.finish();
1404 try {
1405 int i = 0;
1406 boolean warned = false;
1407 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1408 if (!warned) {
1409 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1410 warned = true;
1411 }
1412 try {
1413 Thread.sleep(200);
1414 } catch(InterruptedException e) {
1415 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sleep interrupted");
1416 }
1417 i++;
1418 }
1419 if (warned) {
1420 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1421 }
1422 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closing stream");
1423 tagWriter.writeTag(Tag.end("stream:stream"));
1424 } catch (final IOException e) {
1425 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception during disconnect ("+e.getMessage()+")");
1426 } finally {
1427 forceCloseSocket();
1428 }
1429 }
1430 }
1431 }
1432
1433 public void resetStreamId() {
1434 this.streamId = null;
1435 }
1436
1437 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1438 synchronized (this.disco) {
1439 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1440 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1441 if (cursor.getValue().getFeatures().contains(feature)) {
1442 items.add(cursor);
1443 }
1444 }
1445 return items;
1446 }
1447 }
1448
1449 public Jid findDiscoItemByFeature(final String feature) {
1450 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1451 if (items.size() >= 1) {
1452 return items.get(0).getKey();
1453 }
1454 return null;
1455 }
1456
1457 public boolean r() {
1458 if (getFeatures().sm()) {
1459 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1460 return true;
1461 } else {
1462 return false;
1463 }
1464 }
1465
1466 public String getMucServer() {
1467 synchronized (this.disco) {
1468 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1469 final ServiceDiscoveryResult value = cursor.getValue();
1470 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1471 && !value.getFeatures().contains("jabber:iq:gateway")
1472 && !value.hasIdentity("conference", "irc")) {
1473 return cursor.getKey().toString();
1474 }
1475 }
1476 }
1477 return null;
1478 }
1479
1480 public int getTimeToNextAttempt() {
1481 final int interval = Math.min((int) (25 * Math.pow(1.3, attempt)), 300);
1482 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1483 return interval - secondsSinceLast;
1484 }
1485
1486 public int getAttempt() {
1487 return this.attempt;
1488 }
1489
1490 public Features getFeatures() {
1491 return this.features;
1492 }
1493
1494 public long getLastSessionEstablished() {
1495 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1496 return System.currentTimeMillis() - diff;
1497 }
1498
1499 public long getLastConnect() {
1500 return this.lastConnect;
1501 }
1502
1503 public long getLastPingSent() {
1504 return this.lastPingSent;
1505 }
1506
1507 public long getLastDiscoStarted() {
1508 return this.lastDiscoStarted;
1509 }
1510 public long getLastPacketReceived() {
1511 return this.lastPacketReceived;
1512 }
1513
1514 public void sendActive() {
1515 this.sendPacket(new ActivePacket());
1516 }
1517
1518 public void sendInactive() {
1519 this.sendPacket(new InactivePacket());
1520 }
1521
1522 public void resetAttemptCount() {
1523 this.attempt = 0;
1524 this.lastConnect = 0;
1525 }
1526
1527 public void setInteractive(boolean interactive) {
1528 this.mInteractive = interactive;
1529 }
1530
1531 public Identity getServerIdentity() {
1532 return mServerIdentity;
1533 }
1534
1535 private class UnauthorizedException extends IOException {
1536
1537 }
1538
1539 private class SecurityException extends IOException {
1540
1541 }
1542
1543 private class IncompatibleServerException extends IOException {
1544
1545 }
1546
1547 private class StreamErrorHostUnknown extends StreamError {
1548
1549 }
1550
1551 private class StreamErrorPolicyViolation extends StreamError {
1552
1553 }
1554
1555 private class StreamError extends IOException {
1556
1557 }
1558
1559 private class PaymentRequiredException extends IOException {
1560
1561 }
1562
1563 public enum Identity {
1564 FACEBOOK,
1565 SLACK,
1566 EJABBERD,
1567 PROSODY,
1568 NIMBUZZ,
1569 UNKNOWN
1570 }
1571
1572 public class Features {
1573 XmppConnection connection;
1574 private boolean carbonsEnabled = false;
1575 private boolean encryptionEnabled = false;
1576 private boolean blockListRequested = false;
1577
1578 public Features(final XmppConnection connection) {
1579 this.connection = connection;
1580 }
1581
1582 private boolean hasDiscoFeature(final Jid server, final String feature) {
1583 synchronized (XmppConnection.this.disco) {
1584 return connection.disco.containsKey(server) &&
1585 connection.disco.get(server).getFeatures().contains(feature);
1586 }
1587 }
1588
1589 public boolean carbons() {
1590 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1591 }
1592
1593 public boolean blocking() {
1594 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1595 }
1596
1597 public boolean register() {
1598 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1599 }
1600
1601 public boolean sm() {
1602 return streamId != null
1603 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1604 }
1605
1606 public boolean csi() {
1607 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1608 }
1609
1610 public boolean pep() {
1611 synchronized (XmppConnection.this.disco) {
1612 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1613 return info != null && info.hasIdentity("pubsub", "pep");
1614 }
1615 }
1616
1617 public boolean pepPersistent() {
1618 synchronized (XmppConnection.this.disco) {
1619 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1620 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1621 }
1622 }
1623
1624 public boolean mam() {
1625 return hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")
1626 || hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1627 }
1628
1629 public boolean push() {
1630 return hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:push:0")
1631 || hasDiscoFeature(account.getServer(), "urn:xmpp:push:0");
1632 }
1633
1634 public boolean rosterVersioning() {
1635 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1636 }
1637
1638 public void setBlockListRequested(boolean value) {
1639 this.blockListRequested = value;
1640 }
1641
1642 public boolean httpUpload(long filesize) {
1643 if (Config.DISABLE_HTTP_UPLOAD) {
1644 return false;
1645 } else {
1646 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD);
1647 if (items.size() > 0) {
1648 try {
1649 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(Xmlns.HTTP_UPLOAD, "max-file-size"));
1650 if(filesize <= maxsize) {
1651 return true;
1652 } else {
1653 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": http upload is not available for files with size "+filesize+" (max is "+maxsize+")");
1654 return false;
1655 }
1656 } catch (Exception e) {
1657 return true;
1658 }
1659 } else {
1660 return false;
1661 }
1662 }
1663 }
1664
1665 public long getMaxHttpUploadSize() {
1666 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD);
1667 if (items.size() > 0) {
1668 try {
1669 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(Xmlns.HTTP_UPLOAD, "max-file-size"));
1670 } catch (Exception e) {
1671 return -1;
1672 }
1673 } else {
1674 return -1;
1675 }
1676 }
1677 }
1678
1679 private IqGenerator getIqGenerator() {
1680 return mXmppConnectionService.getIqGenerator();
1681 }
1682}