aboutsummaryrefslogtreecommitdiffstats
path: root/src/main/java/de/pixart/messenger/parser/MessageParser.java
blob: 54a4571cc9ecaf44f29fee6826690198c0869c9c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
package de.pixart.messenger.parser;

import android.os.Build;
import android.text.Html;
import android.util.Log;
import android.util.Pair;

import net.java.otr4j.session.Session;
import net.java.otr4j.session.SessionStatus;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import java.util.UUID;

import de.pixart.messenger.Config;
import de.pixart.messenger.R;
import de.pixart.messenger.crypto.OtrService;
import de.pixart.messenger.crypto.axolotl.AxolotlService;
import de.pixart.messenger.crypto.axolotl.XmppAxolotlMessage;
import de.pixart.messenger.entities.Account;
import de.pixart.messenger.entities.Bookmark;
import de.pixart.messenger.entities.Contact;
import de.pixart.messenger.entities.Conversation;
import de.pixart.messenger.entities.Message;
import de.pixart.messenger.entities.MucOptions;
import de.pixart.messenger.entities.Presence;
import de.pixart.messenger.entities.ServiceDiscoveryResult;
import de.pixart.messenger.http.HttpConnectionManager;
import de.pixart.messenger.services.MessageArchiveService;
import de.pixart.messenger.services.XmppConnectionService;
import de.pixart.messenger.utils.CryptoHelper;
import de.pixart.messenger.utils.Namespace;
import de.pixart.messenger.xml.Element;
import de.pixart.messenger.xmpp.OnMessagePacketReceived;
import de.pixart.messenger.xmpp.chatstate.ChatState;
import de.pixart.messenger.xmpp.jid.Jid;
import de.pixart.messenger.xmpp.pep.Avatar;
import de.pixart.messenger.xmpp.stanzas.MessagePacket;

public class MessageParser extends AbstractParser implements OnMessagePacketReceived {

    private static final List<String> CLIENTS_SENDING_HTML_IN_OTR = Arrays.asList("Pidgin", "Adium", "Trillian");

    public MessageParser(XmppConnectionService service) {
        super(service);
    }

    private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
        ChatState state = ChatState.parse(packet);
        if (state != null && c != null) {
            final Account account = c.getAccount();
            Jid from = packet.getFrom();
            if (from.toBareJid().equals(account.getJid().toBareJid())) {
                c.setOutgoingChatState(state);
                if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
                    mXmppConnectionService.markRead(c);
                    activateGracePeriod(account);
                }
                return false;
            } else {
                if (isTypeGroupChat) {
                    MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
                    if (user != null) {
                        return user.setChatState(state);
                    } else {
                        return false;
                    }
                } else {
                    return c.setIncomingChatState(state);
                }
            }
        }
        return false;
    }

    private Message parseOtrChat(String body, Jid from, String id, Conversation conversation) {
        String presence;
        if (from.isBareJid()) {
            presence = "";
        } else {
            presence = from.getResourcepart();
        }
        if (body.matches("^\\?OTRv\\d{1,2}\\?.*")) {
            conversation.endOtrIfNeeded();
        }
        if (!conversation.hasValidOtrSession()) {
            conversation.startOtrSession(presence, false);
        } else {
            String foreignPresence = conversation.getOtrSession().getSessionID().getUserID();
            if (!foreignPresence.equals(presence)) {
                conversation.endOtrIfNeeded();
                conversation.startOtrSession(presence, false);
            }
        }
        try {
            conversation.setLastReceivedOtrMessageId(id);
            Session otrSession = conversation.getOtrSession();
            body = otrSession.transformReceiving(body);
            SessionStatus status = otrSession.getSessionStatus();
            if (body == null && status == SessionStatus.ENCRYPTED) {
                mXmppConnectionService.onOtrSessionEstablished(conversation);
                return null;
            } else if (body == null && status == SessionStatus.FINISHED) {
                conversation.resetOtrSession();
                mXmppConnectionService.updateConversationUi();
                return null;
            } else if (body == null || (body.isEmpty())) {
                return null;
            }
            if (body.startsWith(CryptoHelper.FILETRANSFER)) {
                String key = body.substring(CryptoHelper.FILETRANSFER.length());
                conversation.setSymmetricKey(CryptoHelper.hexToBytes(key));
                return null;
            }
            if (clientMightSendHtml(conversation.getAccount(), from)) {
                Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": received OTR message from bad behaving client. escaping HTML…");
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                    body = Html.fromHtml(body, Html.FROM_HTML_MODE_LEGACY).toString();
                } else {
                    body = Html.fromHtml(body).toString();
                }
            }

            final OtrService otrService = conversation.getAccount().getOtrService();
            Message finishedMessage = new Message(conversation, body, Message.ENCRYPTION_OTR, Message.STATUS_RECEIVED);
            finishedMessage.setFingerprint(otrService.getFingerprint(otrSession.getRemotePublicKey()));
            conversation.setLastReceivedOtrMessageId(null);

            return finishedMessage;
        } catch (Exception e) {
            conversation.resetOtrSession();
            return null;
        }
    }

    private static boolean clientMightSendHtml(Account account, Jid from) {
        String resource = from.getResourcepart();
        if (resource == null) {
            return false;
        }
        Presence presence = account.getRoster().getContact(from).getPresences().getPresences().get(resource);
        ServiceDiscoveryResult disco = presence == null ? null : presence.getServiceDiscoveryResult();
        if (disco == null) {
            return false;
        }
        return hasIdentityKnowForSendingHtml(disco.getIdentities());
    }

    private static boolean hasIdentityKnowForSendingHtml(List<ServiceDiscoveryResult.Identity> identities) {
        for (ServiceDiscoveryResult.Identity identity : identities) {
            if (identity.getName() != null) {
                if (CLIENTS_SENDING_HTML_IN_OTR.contains(identity.getName())) {
                    return true;
                }
            }
        }
        return false;
    }

    private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status) {
        AxolotlService service = conversation.getAccount().getAxolotlService();
        XmppAxolotlMessage xmppAxolotlMessage;
        try {
            xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.toBareJid());
        } catch (Exception e) {
            Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": invalid omemo message received " + e.getMessage());
            return null;
        }
        XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage);
        if (plaintextMessage != null) {
            Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
            finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
            return finishedMessage;
        } else {
            return null;
        }
    }

    private class Invite {
        final Jid jid;
        final String password;
        final Contact inviter;
        Invite(Jid jid, String password, Contact inviter) {
            this.jid = jid;
            this.password = password;
            this.inviter = inviter;
        }

        public boolean execute(Account account) {
            if (jid != null) {
                Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
                if (!conversation.getMucOptions().online()) {
                    conversation.getMucOptions().setPassword(password);
                    mXmppConnectionService.databaseBackend.updateConversation(conversation);
                    mXmppConnectionService.joinMuc(conversation, inviter != null && inviter.mutualPresenceSubscription());
                    mXmppConnectionService.updateConversationUi();
                }
                return true;
            }
            return false;
        }
    }

    private Invite extractInvite(Account account, Element message) {
        Element x = message.findChild("x", "http://jabber.org/protocol/muc#user");
        if (x != null) {
            Element invite = x.findChild("invite");
            if (invite != null) {
                Element pw = x.findChild("password");
                Jid from = invite.getAttributeAsJid("from");
                Contact contact = from == null ? null : account.getRoster().getContact(from);
                return new Invite(message.getAttributeAsJid("from"), pw != null ? pw.getContent() : null, contact);
            }
        } else {
            x = message.findChild("x", "jabber:x:conference");
            if (x != null) {
                Jid from = message.getAttributeAsJid("from");
                Contact contact = from == null ? null : account.getRoster().getContact(from);
                return new Invite(x.getAttributeAsJid("jid"), x.getAttribute("password"), contact);
            }
        }
        return null;
    }

    private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
        final Jid by;
        final boolean safeToExtract;
        if (isTypeGroupChat) {
            by = conversation.getJid().toBareJid();
            safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
        } else {
            Account account = conversation.getAccount();
            by = account.getJid().toBareJid();
            safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
        }
        return safeToExtract ? extractStanzaId(packet, by) : null;
    }

    private static String extractStanzaId(Element packet, Jid by) {
        for (Element child : packet.getChildren()) {
            if (child.getName().equals("stanza-id")
                    && Namespace.STANZA_IDS.equals(child.getNamespace())
                    && by.equals(child.getAttributeAsJid("by"))) {
                return child.getAttribute("id");
            }
        }
        return null;
    }

    private void parseEvent(final Element event, final Jid from, final Account account) {
        Element items = event.findChild("items");
        String node = items == null ? null : items.getAttribute("node");
        if ("urn:xmpp:avatar:metadata".equals(node)) {
            Avatar avatar = Avatar.parseMetadata(items);
            if (avatar != null) {
                avatar.owner = from.toBareJid();
                if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
                    if (account.getJid().toBareJid().equals(from)) {
                        if (account.setAvatar(avatar.getFilename())) {
                            mXmppConnectionService.databaseBackend.updateAccount(account);
                        }
                        mXmppConnectionService.getAvatarService().clear(account);
                        mXmppConnectionService.updateConversationUi();
                        mXmppConnectionService.updateAccountUi();
                    } else {
                        Contact contact = account.getRoster().getContact(from);
                        contact.setAvatar(avatar);
                        mXmppConnectionService.getAvatarService().clear(contact);
                        mXmppConnectionService.updateConversationUi();
                        mXmppConnectionService.updateRosterUi();
                    }
                } else if (mXmppConnectionService.isDataSaverDisabled()) {
                    mXmppConnectionService.fetchAvatar(account, avatar);
                }
            }
        } else if ("http://jabber.org/protocol/nick".equals(node)) {
            final Element i = items.findChild("item");
            final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
            if (nick != null) {
                Contact contact = account.getRoster().getContact(from);
                if (contact.setPresenceName(nick)) {
                    mXmppConnectionService.getAvatarService().clear(contact);
                }
                mXmppConnectionService.updateConversationUi();
                mXmppConnectionService.updateAccountUi();
            }
        } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
            Element item = items.findChild("item");
            Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list (" + deviceIds + ") update from " + from + ", processing...");
            AxolotlService axolotlService = account.getAxolotlService();
            axolotlService.registerDevices(from, deviceIds);
            mXmppConnectionService.updateAccountUi();
        }
    }

    private boolean handleErrorMessage(Account account, MessagePacket packet) {
        if (packet.getType() == MessagePacket.TYPE_ERROR) {
            Jid from = packet.getFrom();
            if (from != null) {
                Message message = mXmppConnectionService.markMessage(account,
                        from.toBareJid(),
                        packet.getId(),
                        Message.STATUS_SEND_FAILED,
                        extractErrorMessage(packet));
                if (message != null) {
                    if (message.getEncryption() == Message.ENCRYPTION_OTR) {
                        message.getConversation().endOtrIfNeeded();
                    }
                }
            }
            return true;
        }
        return false;
    }

    @Override
    public void onMessagePacketReceived(Account account, MessagePacket original) {
        if (handleErrorMessage(account, original)) {
            return;
        }
        final MessagePacket packet;
        Long timestamp = null;
        final boolean isForwarded;
        boolean isCarbon = false;
        String serverMsgId = null;
        final Element fin = original.findChild("fin", Namespace.MAM_LEGACY);
        if (fin != null) {
            mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
            return;
        }
        final boolean mamlegacy = original.hasChild("result", Namespace.MAM_LEGACY);
        final Element result = original.findChild("result", mamlegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
        final MessageArchiveService.Query query = result == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid"));
        if (query != null && query.validFrom(original.getFrom())) {
            Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", mamlegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
            if (f == null) {
                return;
            }
            timestamp = f.second;
            packet = f.first;
            isForwarded = true;
            serverMsgId = result.getAttribute("id");
            query.incrementMessageCount();
        } else if (query != null) {
            Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": received mam result from invalid sender");
            return;
        } else if (original.fromServer(account)) {
            Pair<MessagePacket, Long> f;
            f = original.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
            f = f == null ? original.getForwardedMessagePacket("sent", "urn:xmpp:carbons:2") : f;
            packet = f != null ? f.first : original;
            if (handleErrorMessage(account, packet)) {
                return;
            }
            timestamp = f != null ? f.second : null;
            isCarbon = f != null;
            isForwarded = isCarbon;
        } else {
            packet = original;
            isForwarded = false;
        }

        if (timestamp == null) {
            timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
        }
        final String body = packet.getBody();
        final Element mucUserElement = packet.findChild("x", "http://jabber.org/protocol/muc#user");
        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
        final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
        final Element oob = packet.findChild("x", Namespace.OOB);
        final String oobUrl = oob != null ? oob.findChildContent("url") : null;
        final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
        final Element axolotlEncrypted = packet.findChild(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
        int status;
        final Jid counterpart;
        final Jid to = packet.getTo();
        final Jid from = packet.getFrom();
        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
        final String remoteMsgId;
        if (originId != null && originId.getAttribute("id") != null) {
            remoteMsgId = originId.getAttribute("id");
        } else {
            remoteMsgId = packet.getId();
        }
        boolean notify = false;

        if (from == null) {
            Log.d(Config.LOGTAG, "no from in: " + packet.toString());
            return;
        }

        boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
        boolean isProperlyAddressed = (to != null) && (!to.isBareJid() || account.countPresences() == 0);
        boolean isMucStatusMessage = from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
        if (packet.fromAccount(account)) {
            status = Message.STATUS_SEND;
            counterpart = to != null ? to : account.getJid();
        } else {
            status = Message.STATUS_RECEIVED;
            counterpart = from;
        }

        Invite invite = extractInvite(account, packet);
        if (invite != null && invite.execute(account)) {
            return;
        }

        if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.toBareJid()), isTypeGroupChat, packet)) {
            mXmppConnectionService.updateConversationUi();
        }

        if ((body != null || pgpEncrypted != null || axolotlEncrypted != null || oobUrl != null) && !isMucStatusMessage) {
            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.toBareJid(), isTypeGroupChat, false, query, false);
            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
            if (serverMsgId == null) {
                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
            }
            if (isTypeGroupChat) {
                if (conversation.getMucOptions().isSelf(counterpart)) {
                    status = Message.STATUS_SEND_RECEIVED;
                    isCarbon = true; //not really carbon but received from another resource
                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId)) {
                        return;
                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
                        Message message = conversation.findSentMessageWithBody(packet.getBody());
                        if (message != null) {
                            mXmppConnectionService.markMessage(message, status);
                            return;
                        }
                    }
                } else {
                    status = Message.STATUS_RECEIVED;
                }
            }
            final Message message;
            if (body != null && body.startsWith("?OTR") && Config.supportOtr()) {
                if (!isForwarded && !isTypeGroupChat && isProperlyAddressed && !conversationMultiMode) {
                    message = parseOtrChat(body, from, remoteMsgId, conversation);
                    if (message == null) {
                        return;
                    }
                } else {
                    Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": ignoring OTR message from " + from + " isForwarded=" + Boolean.toString(isForwarded) + ", isProperlyAddressed=" + Boolean.valueOf(isProperlyAddressed));
                    message = new Message(conversation, body, Message.ENCRYPTION_NONE, status);
                }
            } else if (pgpEncrypted != null && Config.supportOpenPgp()) {
                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
                Jid origin;
                if (conversationMultiMode) {
                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
                    if (origin == null) {
                        Log.d(Config.LOGTAG, "axolotl message in non anonymous conference received");
                        return;
                    }
                } else {
                    origin = from;
                }
                message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status);
                if (message == null) {
                    return;
                }
                if (conversationMultiMode) {
                    message.setTrueCounterpart(origin);
                }
            } else if (body == null && oobUrl != null) {
                message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
                message.setOob(true);
                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
                }
            } else {
                message = new Message(conversation, body, Message.ENCRYPTION_NONE, status);
            }

            message.setCounterpart(counterpart);
            message.setRemoteMsgId(remoteMsgId);
            message.setServerMsgId(serverMsgId);
            message.setCarbon(isCarbon);
            message.setTime(timestamp);
            if (body != null && body.equals(oobUrl)) {
                message.setOob(true);
                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
                }
            }
            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
            if (conversationMultiMode) {
                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
                Jid trueCounterpart;
                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
                    trueCounterpart = message.getTrueCounterpart();
                } else if (Config.PARSE_REAL_JID_FROM_MUC_MAM) {
                    trueCounterpart = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
                } else {
                    trueCounterpart = fallback;
                }
                if (trueCounterpart != null && trueCounterpart.toBareJid().equals(account.getJid().toBareJid())) {
                    status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
                }
                message.setStatus(status);
                message.setTrueCounterpart(trueCounterpart);
                if (!isTypeGroupChat) {
                    message.setType(Message.TYPE_PRIVATE);
                }
            } else {
                updateLastseen(account, from);
            }

            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
                Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
                        counterpart,
                        message.getStatus() == Message.STATUS_RECEIVED,
                        message.isCarbon());
                if (replacedMessage != null) {
                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
                            && replacedMessage.getTrueCounterpart().equals(message.getTrueCounterpart());
                    final boolean duplicate = conversation.hasDuplicateMessage(message);
                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode) && !duplicate) {
                        Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
                        synchronized (replacedMessage) {
                            final String uuid = replacedMessage.getUuid();
                            replacedMessage.setUuid(UUID.randomUUID().toString());
                            replacedMessage.setBody(message.getBody());
                            replacedMessage.setEdited(replacedMessage.getRemoteMsgId());
                            replacedMessage.setRemoteMsgId(remoteMsgId);
                            replacedMessage.setEncryption(message.getEncryption());
                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
                                replacedMessage.markUnread();
                            }
                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
                            mXmppConnectionService.getNotificationService().updateNotification(false);
                            if (mXmppConnectionService.confirmMessages() && (replacedMessage.trusted() || replacedMessage.getType() == Message.TYPE_PRIVATE) && remoteMsgId != null && !isForwarded && !isTypeGroupChat) {
                                sendMessageReceipts(account, packet);
                            }
                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
                            }
                        }
                        return;
                    } else {
                        Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": received message correction but verification didn't check out");
                    }
                }
            }

            long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
            if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
                Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
                return;
            }

            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
                    || message.getType() == Message.TYPE_PRIVATE
                    || message.getServerMsgId() != null;
            if (checkForDuplicates && conversation.hasDuplicateMessage(message)) {
                Log.d(Config.LOGTAG, "skipping duplicate message from " + message.getCounterpart().toString() + " " + message.getBody());
                return;
            }

            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
                conversation.prepend(message);
            } else {
                conversation.add(message);
            }
            if (query != null) {
                query.incrementActualMessageCount();
            }

            if (query == null || query.isCatchup()) { //either no mam or catchup
                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
                    mXmppConnectionService.markRead(conversation);
                    if (query == null) {
                        activateGracePeriod(account);
                    }
                } else {
                    message.markUnread();
                    notify = true;
                }
            }

            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
            }

            if (query == null) {
                mXmppConnectionService.updateConversationUi();
            }

            if (mXmppConnectionService.confirmMessages() && (message.trusted() || message.getType() == Message.TYPE_PRIVATE) && remoteMsgId != null && !isForwarded && !isTypeGroupChat) {
                sendMessageReceipts(account, packet);
            }

            if (message.getStatus() == Message.STATUS_RECEIVED
                    && conversation.getOtrSession() != null
                    && !conversation.getOtrSession().getSessionID().getUserID()
                    .equals(message.getCounterpart().getResourcepart())) {
                conversation.endOtrIfNeeded();
            }

            mXmppConnectionService.databaseBackend.createMessage(message);
            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
            if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
                manager.createNewDownloadConnection(message);
            } else if (notify) {
                if (query != null && query.isCatchup()) {
                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
                } else {
                    mXmppConnectionService.getNotificationService().push(message);
                }
            }
        } else if (!packet.hasChild("body")) { //no body
            final Conversation conversation = mXmppConnectionService.find(account, from.toBareJid());
            if (isTypeGroupChat) {
                if (packet.hasChild("subject")) {
                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
                        String subject = packet.findChildContent("subject");
                        conversation.getMucOptions().setSubject(subject);
                        final Bookmark bookmark = conversation.getBookmark();
                        if (bookmark != null && bookmark.getBookmarkName() == null) {
                            if (bookmark.setBookmarkName(subject)) {
                                mXmppConnectionService.pushBookmarks(account);
                            }
                        }
                        mXmppConnectionService.updateConversationUi();
                        return;
                    }
                }
            }
            if (conversation != null && mucUserElement != null && from.isBareJid()) {
                for (Element child : mucUserElement.getChildren()) {
                    if ("status".equals(child.getName())) {
                        try {
                            int code = Integer.parseInt(child.getAttribute("code"));
                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
                                break;
                            }
                        } catch (Exception e) {
                            //ignored
                        }
                    } else if ("item".equals(child.getName())) {
                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for " + user.getRealJid() + " to " + user.getAffiliation() + " in " + conversation.getJid().toBareJid());
                        if (!user.realJidMatchesAccount()) {
                            boolean isNew = conversation.getMucOptions().updateUser(user);
                            mXmppConnectionService.getAvatarService().clear(conversation);
                            mXmppConnectionService.updateMucRosterUi();
                            mXmppConnectionService.updateConversationUi();
                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
                                Jid jid = user.getRealJid();
                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
                                if (cryptoTargets.remove(user.getRealJid())) {
                                    Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
                                    mXmppConnectionService.updateConversation(conversation);
                                } else if (isNew && user.getRealJid() != null && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
                                    account.getAxolotlService().fetchDeviceIds(user.getRealJid());
                                }
                            }
                        }
                    }
                }
            }
        }


        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
        if (received == null) {
            received = packet.findChild("received", "urn:xmpp:receipts");
        }
        if (received != null && !packet.fromAccount(account)) {
            mXmppConnectionService.markMessage(account, from.toBareJid(), received.getAttribute("id"), Message.STATUS_SEND_RECEIVED);
        }
        Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
        if (displayed != null) {
            if (packet.fromAccount(account)) {
                Conversation conversation = mXmppConnectionService.find(account, counterpart.toBareJid());
                if (conversation != null && (query == null || query.isCatchup())) {
                    mXmppConnectionService.markRead(conversation);
                }
            } else {
                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.toBareJid(), displayed.getAttribute("id"), Message.STATUS_SEND_DISPLAYED);
                Message message = displayedMessage == null ? null : displayedMessage.prev();
                while (message != null
                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
                    message = message.prev();
                }
            }
        }

        Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
        if (event != null) {
            parseEvent(event, original.getFrom(), account);
        }

        final String nick = packet.findChildContent("nick", Namespace.NICK);
        if (nick != null) {
            Contact contact = account.getRoster().getContact(from);
            if (contact.setPresenceName(nick)) {
                mXmppConnectionService.getAvatarService().clear(contact);
            }
        }
    }

    private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
        final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
        Jid result = item == null ? null : item.getAttributeAsJid("jid");
        return result != null ? result : fallback;
    }

    private void sendMessageReceipts(Account account, MessagePacket packet) {
        ArrayList<String> receiptsNamespaces = new ArrayList<>();
        if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
            receiptsNamespaces.add("urn:xmpp:chat-markers:0");
        }
        if (packet.hasChild("request", "urn:xmpp:receipts")) {
            receiptsNamespaces.add("urn:xmpp:receipts");
        }
        if (receiptsNamespaces.size() > 0) {
            MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
                    packet,
                    receiptsNamespaces,
                    packet.getType());
            mXmppConnectionService.sendMessagePacket(account, receipt);
        }
    }

    private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);

    private void activateGracePeriod(Account account) {
        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
        Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
        account.activateGracePeriod(duration);
    }
}