1package eu.siacs.conversations.parser;
   2
   3import android.util.Log;
   4import android.util.Pair;
   5
   6import java.net.URL;
   7import java.text.SimpleDateFormat;
   8import java.util.ArrayList;
   9import java.util.Arrays;
  10import java.util.Collections;
  11import java.util.Date;
  12import java.util.List;
  13import java.util.Locale;
  14import java.util.Map;
  15import java.util.Set;
  16import java.util.UUID;
  17
  18import eu.siacs.conversations.Config;
  19import eu.siacs.conversations.R;
  20import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  21import eu.siacs.conversations.crypto.axolotl.BrokenSessionException;
  22import eu.siacs.conversations.crypto.axolotl.NotEncryptedForThisDeviceException;
  23import eu.siacs.conversations.crypto.axolotl.OutdatedSenderException;
  24import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  25import eu.siacs.conversations.entities.Account;
  26import eu.siacs.conversations.entities.Bookmark;
  27import eu.siacs.conversations.entities.Contact;
  28import eu.siacs.conversations.entities.Conversation;
  29import eu.siacs.conversations.entities.Conversational;
  30import eu.siacs.conversations.entities.Message;
  31import eu.siacs.conversations.entities.MucOptions;
  32import eu.siacs.conversations.entities.ReadByMarker;
  33import eu.siacs.conversations.entities.ReceiptRequest;
  34import eu.siacs.conversations.entities.RtpSessionStatus;
  35import eu.siacs.conversations.http.HttpConnectionManager;
  36import eu.siacs.conversations.http.P1S3UrlStreamHandler;
  37import eu.siacs.conversations.services.MessageArchiveService;
  38import eu.siacs.conversations.services.QuickConversationsService;
  39import eu.siacs.conversations.services.XmppConnectionService;
  40import eu.siacs.conversations.utils.CryptoHelper;
  41import eu.siacs.conversations.xml.LocalizedContent;
  42import eu.siacs.conversations.xml.Namespace;
  43import eu.siacs.conversations.xml.Element;
  44import eu.siacs.conversations.xmpp.InvalidJid;
  45import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  46import eu.siacs.conversations.xmpp.chatstate.ChatState;
  47import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  48import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  49import eu.siacs.conversations.xmpp.pep.Avatar;
  50import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  51import eu.siacs.conversations.xmpp.Jid;
  52
  53public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
  54
  55    private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
  56
  57    private static final List<String> JINGLE_MESSAGE_ELEMENT_NAMES = Arrays.asList("accept", "propose", "proceed", "reject", "retract");
  58
  59    public MessageParser(XmppConnectionService service) {
  60        super(service);
  61    }
  62
  63    private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
  64        final Jid by;
  65        final boolean safeToExtract;
  66        if (isTypeGroupChat) {
  67            by = conversation.getJid().asBareJid();
  68            safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
  69        } else {
  70            Account account = conversation.getAccount();
  71            by = account.getJid().asBareJid();
  72            safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  73        }
  74        return safeToExtract ? extractStanzaId(packet, by) : null;
  75    }
  76
  77    private static String extractStanzaId(Account account, Element packet) {
  78        final boolean safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  79        return safeToExtract ? extractStanzaId(packet, account.getJid().asBareJid()) : null;
  80    }
  81
  82    private static String extractStanzaId(Element packet, Jid by) {
  83        for (Element child : packet.getChildren()) {
  84            if (child.getName().equals("stanza-id")
  85                    && Namespace.STANZA_IDS.equals(child.getNamespace())
  86                    && by.equals(InvalidJid.getNullForInvalid(child.getAttributeAsJid("by")))) {
  87                return child.getAttribute("id");
  88            }
  89        }
  90        return null;
  91    }
  92
  93    private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
  94        final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
  95        Jid result = item == null ? null : InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
  96        return result != null ? result : fallback;
  97    }
  98
  99    private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
 100        ChatState state = ChatState.parse(packet);
 101        if (state != null && c != null) {
 102            final Account account = c.getAccount();
 103            Jid from = packet.getFrom();
 104            if (from.asBareJid().equals(account.getJid().asBareJid())) {
 105                c.setOutgoingChatState(state);
 106                if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 107                    mXmppConnectionService.markRead(c);
 108                    activateGracePeriod(account);
 109                }
 110                return false;
 111            } else {
 112                if (isTypeGroupChat) {
 113                    MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 114                    if (user != null) {
 115                        return user.setChatState(state);
 116                    } else {
 117                        return false;
 118                    }
 119                } else {
 120                    return c.setIncomingChatState(state);
 121                }
 122            }
 123        }
 124        return false;
 125    }
 126
 127    private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, final boolean checkedForDuplicates, boolean postpone) {
 128        final AxolotlService service = conversation.getAccount().getAxolotlService();
 129        final XmppAxolotlMessage xmppAxolotlMessage;
 130        try {
 131            xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
 132        } catch (Exception e) {
 133            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
 134            return null;
 135        }
 136        if (xmppAxolotlMessage.hasPayload()) {
 137            final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage;
 138            try {
 139                plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
 140            } catch (BrokenSessionException e) {
 141                if (checkedForDuplicates) {
 142                    if (service.trustedOrPreviouslyResponded(from.asBareJid())) {
 143                        service.reportBrokenSessionException(e, postpone);
 144                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 145                    } else {
 146                        Log.d(Config.LOGTAG, "ignoring broken session exception because contact was not trusted");
 147                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 148                    }
 149                } else {
 150                    Log.d(Config.LOGTAG, "ignoring broken session exception because checkForDuplicates failed");
 151                    return null;
 152                }
 153            } catch (NotEncryptedForThisDeviceException e) {
 154                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE, status);
 155            } catch (OutdatedSenderException e) {
 156                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 157            }
 158            if (plaintextMessage != null) {
 159                Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
 160                finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
 161                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
 162                return finishedMessage;
 163            }
 164        } else {
 165            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": received OMEMO key transport message");
 166            service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
 167        }
 168        return null;
 169    }
 170
 171    private Invite extractInvite(Element message) {
 172        final Element mucUser = message.findChild("x", Namespace.MUC_USER);
 173        if (mucUser != null) {
 174            Element invite = mucUser.findChild("invite");
 175            if (invite != null) {
 176                String password = mucUser.findChildContent("password");
 177                Jid from = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("from"));
 178                Jid room = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 179                if (room == null) {
 180                    return null;
 181                }
 182                return new Invite(room, password, false, from);
 183            }
 184        }
 185        final Element conference = message.findChild("x", "jabber:x:conference");
 186        if (conference != null) {
 187            Jid from = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 188            Jid room = InvalidJid.getNullForInvalid(conference.getAttributeAsJid("jid"));
 189            if (room == null) {
 190                return null;
 191            }
 192            return new Invite(room, conference.getAttribute("password"), true, from);
 193        }
 194        return null;
 195    }
 196
 197    private void parseEvent(final Element event, final Jid from, final Account account) {
 198        Element items = event.findChild("items");
 199        String node = items == null ? null : items.getAttribute("node");
 200        if ("urn:xmpp:avatar:metadata".equals(node)) {
 201            Avatar avatar = Avatar.parseMetadata(items);
 202            if (avatar != null) {
 203                avatar.owner = from.asBareJid();
 204                if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
 205                    if (account.getJid().asBareJid().equals(from)) {
 206                        if (account.setAvatar(avatar.getFilename())) {
 207                            mXmppConnectionService.databaseBackend.updateAccount(account);
 208                            mXmppConnectionService.notifyAccountAvatarHasChanged(account);
 209                        }
 210                        mXmppConnectionService.getAvatarService().clear(account);
 211                        mXmppConnectionService.updateConversationUi();
 212                        mXmppConnectionService.updateAccountUi();
 213                    } else {
 214                        Contact contact = account.getRoster().getContact(from);
 215                        if (contact.setAvatar(avatar)) {
 216                            mXmppConnectionService.syncRoster(account);
 217                            mXmppConnectionService.getAvatarService().clear(contact);
 218                            mXmppConnectionService.updateConversationUi();
 219                            mXmppConnectionService.updateRosterUi();
 220                        }
 221                    }
 222                } else if (mXmppConnectionService.isDataSaverDisabled()) {
 223                    mXmppConnectionService.fetchAvatar(account, avatar);
 224                }
 225            }
 226        } else if (Namespace.NICK.equals(node)) {
 227            final Element i = items.findChild("item");
 228            final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
 229            if (nick != null) {
 230                setNick(account, from, nick);
 231            }
 232        } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
 233            Element item = items.findChild("item");
 234            Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
 235            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
 236            AxolotlService axolotlService = account.getAxolotlService();
 237            axolotlService.registerDevices(from, deviceIds);
 238        } else if (Namespace.BOOKMARKS.equals(node) && account.getJid().asBareJid().equals(from)) {
 239            if (account.getXmppConnection().getFeatures().bookmarksConversion()) {
 240                final Element i = items.findChild("item");
 241                final Element storage = i == null ? null : i.findChild("storage", Namespace.BOOKMARKS);
 242                Map<Jid, Bookmark> bookmarks = Bookmark.parseFromStorage(storage, account);
 243                mXmppConnectionService.processBookmarksInitial(account, bookmarks, true);
 244                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": processing bookmark PEP event");
 245            } else {
 246                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring bookmark PEP event because bookmark conversion was not detected");
 247            }
 248        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 249            final Element item = items.findChild("item");
 250            final Element retract = items.findChild("retract");
 251            if (item != null) {
 252                final Bookmark bookmark = Bookmark.parseFromItem(item, account);
 253                if (bookmark != null) {
 254                    account.putBookmark(bookmark);
 255                    mXmppConnectionService.processModifiedBookmark(bookmark);
 256                    mXmppConnectionService.updateConversationUi();
 257                }
 258            }
 259            if (retract != null) {
 260                final Jid id = InvalidJid.getNullForInvalid(retract.getAttributeAsJid("id"));
 261                if (id != null) {
 262                    account.removeBookmark(id);
 263                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmark for " + id);
 264                    mXmppConnectionService.processDeletedBookmark(account, id);
 265                    mXmppConnectionService.updateConversationUi();
 266                }
 267            }
 268        } else {
 269            Log.d(Config.LOGTAG, account.getJid().asBareJid() + " received pubsub notification for node=" + node);
 270        }
 271    }
 272
 273    private void parseDeleteEvent(final Element event, final Jid from, final Account account) {
 274        final Element delete = event.findChild("delete");
 275        final String node = delete == null ? null : delete.getAttribute("node");
 276        if (Namespace.NICK.equals(node)) {
 277            Log.d(Config.LOGTAG, "parsing nick delete event from " + from);
 278            setNick(account, from, null);
 279        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 280            account.setBookmarks(Collections.emptyMap());
 281            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmarks node");
 282        }
 283    }
 284
 285    private void parsePurgeEvent(final Element event, final Jid from, final Account account) {
 286        final Element purge = event.findChild("purge");
 287        final String node = purge == null ? null : purge.getAttribute("node");
 288        if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 289            account.setBookmarks(Collections.emptyMap());
 290            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": purged bookmarks");
 291        }
 292    }
 293
 294    private void setNick(Account account, Jid user, String nick) {
 295        if (user.asBareJid().equals(account.getJid().asBareJid())) {
 296            account.setDisplayName(nick);
 297            if (QuickConversationsService.isQuicksy()) {
 298                mXmppConnectionService.getAvatarService().clear(account);
 299            }
 300        } else {
 301            Contact contact = account.getRoster().getContact(user);
 302            if (contact.setPresenceName(nick)) {
 303                mXmppConnectionService.syncRoster(account);
 304                mXmppConnectionService.getAvatarService().clear(contact);
 305            }
 306        }
 307        mXmppConnectionService.updateConversationUi();
 308        mXmppConnectionService.updateAccountUi();
 309    }
 310
 311    private boolean handleErrorMessage(final Account account, final MessagePacket packet) {
 312        if (packet.getType() == MessagePacket.TYPE_ERROR) {
 313            if (packet.fromServer(account)) {
 314                final Pair<MessagePacket, Long> forwarded = packet.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
 315                if (forwarded != null) {
 316                    return handleErrorMessage(account, forwarded.first);
 317                }
 318            }
 319            final Jid from = packet.getFrom();
 320            final String id = packet.getId();
 321            if (from != null && id != null) {
 322                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 323                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 324                    mXmppConnectionService.getJingleConnectionManager()
 325                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.FAILED);
 326                    return true;
 327                }
 328                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX)) {
 329                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX.length());
 330                    mXmppConnectionService.getJingleConnectionManager().failProceed(account, from, sessionId);
 331                    return true;
 332                }
 333                mXmppConnectionService.markMessage(account,
 334                        from.asBareJid(),
 335                        id,
 336                        Message.STATUS_SEND_FAILED,
 337                        extractErrorMessage(packet));
 338                final Element error = packet.findChild("error");
 339                final boolean pingWorthyError = error != null && (error.hasChild("not-acceptable") || error.hasChild("remote-server-timeout") || error.hasChild("remote-server-not-found"));
 340                if (pingWorthyError) {
 341                    Conversation conversation = mXmppConnectionService.find(account, from);
 342                    if (conversation != null && conversation.getMode() == Conversational.MODE_MULTI) {
 343                        if (conversation.getMucOptions().online()) {
 344                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received ping worthy error for seemingly online muc at " + from);
 345                            mXmppConnectionService.mucSelfPingAndRejoin(conversation);
 346                        }
 347                    }
 348                }
 349            }
 350            return true;
 351        }
 352        return false;
 353    }
 354
 355    @Override
 356    public void onMessagePacketReceived(Account account, MessagePacket original) {
 357        if (handleErrorMessage(account, original)) {
 358            return;
 359        }
 360        final MessagePacket packet;
 361        Long timestamp = null;
 362        boolean isCarbon = false;
 363        String serverMsgId = null;
 364        final Element fin = original.findChild("fin", MessageArchiveService.Version.MAM_0.namespace);
 365        if (fin != null) {
 366            mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
 367            return;
 368        }
 369        final Element result = MessageArchiveService.Version.findResult(original);
 370        final MessageArchiveService.Query query = result == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid"));
 371        if (query != null && query.validFrom(original.getFrom())) {
 372            final Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", query.version.namespace);
 373            if (f == null) {
 374                return;
 375            }
 376            timestamp = f.second;
 377            packet = f.first;
 378            serverMsgId = result.getAttribute("id");
 379            query.incrementMessageCount();
 380            if (handleErrorMessage(account, packet)) {
 381                return;
 382            }
 383        } else if (query != null) {
 384            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received mam result from invalid sender");
 385            return;
 386        } else if (original.fromServer(account)) {
 387            Pair<MessagePacket, Long> f;
 388            f = original.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
 389            f = f == null ? original.getForwardedMessagePacket("sent", "urn:xmpp:carbons:2") : f;
 390            packet = f != null ? f.first : original;
 391            if (handleErrorMessage(account, packet)) {
 392                return;
 393            }
 394            timestamp = f != null ? f.second : null;
 395            isCarbon = f != null;
 396        } else {
 397            packet = original;
 398        }
 399
 400        if (timestamp == null) {
 401            timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
 402        }
 403        final LocalizedContent body = packet.getBody();
 404        final Element mucUserElement = packet.findChild("x", Namespace.MUC_USER);
 405        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
 406        final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
 407        final Element oob = packet.findChild("x", Namespace.OOB);
 408        final Element xP1S3 = packet.findChild("x", Namespace.P1_S3_FILE_TRANSFER);
 409        final URL xP1S3url = xP1S3 == null ? null : P1S3UrlStreamHandler.of(xP1S3);
 410        final String oobUrl = oob != null ? oob.findChildContent("url") : null;
 411        final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
 412        final Element axolotlEncrypted = packet.findChildEnsureSingle(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
 413        int status;
 414        final Jid counterpart;
 415        final Jid to = packet.getTo();
 416        final Jid from = packet.getFrom();
 417        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
 418        final String remoteMsgId;
 419        if (originId != null && originId.getAttribute("id") != null) {
 420            remoteMsgId = originId.getAttribute("id");
 421        } else {
 422            remoteMsgId = packet.getId();
 423        }
 424        boolean notify = false;
 425
 426        if (from == null || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
 427            Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
 428            return;
 429        }
 430
 431        boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
 432        if (query != null && !query.muc() && isTypeGroupChat) {
 433            Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": received groupchat (" + from + ") message on regular MAM request. skipping");
 434            return;
 435        }
 436        boolean isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
 437        boolean selfAddressed;
 438        if (packet.fromAccount(account)) {
 439            status = Message.STATUS_SEND;
 440            selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
 441            if (selfAddressed) {
 442                counterpart = from;
 443            } else {
 444                counterpart = to != null ? to : account.getJid();
 445            }
 446        } else {
 447            status = Message.STATUS_RECEIVED;
 448            counterpart = from;
 449            selfAddressed = false;
 450        }
 451
 452        final Invite invite = extractInvite(packet);
 453        if (invite != null) {
 454            if (isTypeGroupChat) {
 455                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring invite to " + invite.jid + " because type=groupchat");
 456            } else if (invite.direct && (mucUserElement != null || invite.inviter == null || mXmppConnectionService.isMuc(account, invite.inviter))) {
 457                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring direct invite to " + invite.jid + " because it was received in MUC");
 458            } else {
 459                invite.execute(account);
 460                return;
 461            }
 462        }
 463
 464        if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null || xP1S3 != null) && !isMucStatusMessage) {
 465            final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain().toEscapedString());
 466            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 467            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
 468
 469            if (serverMsgId == null) {
 470                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
 471            }
 472
 473
 474            if (selfAddressed) {
 475                if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
 476                    return;
 477                }
 478                status = Message.STATUS_RECEIVED;
 479                if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId, counterpart) != null) {
 480                    return;
 481                }
 482            }
 483
 484            if (isTypeGroupChat) {
 485                if (conversation.getMucOptions().isSelf(counterpart)) {
 486                    status = Message.STATUS_SEND_RECEIVED;
 487                    isCarbon = true; //not really carbon but received from another resource
 488                    //TODO this would be the place to change the body after something like mod_pastebin
 489                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId)) {
 490                        return;
 491                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
 492                        LocalizedContent localizedBody = packet.getBody();
 493                        if (localizedBody != null) {
 494                            Message message = conversation.findSentMessageWithBody(localizedBody.content);
 495                            if (message != null) {
 496                                mXmppConnectionService.markMessage(message, status);
 497                                return;
 498                            }
 499                        }
 500                    }
 501                } else {
 502                    status = Message.STATUS_RECEIVED;
 503                }
 504            }
 505            final Message message;
 506            if (xP1S3url != null) {
 507                message = new Message(conversation, xP1S3url.toString(), Message.ENCRYPTION_NONE, status);
 508                message.setOob(true);
 509                if (CryptoHelper.isPgpEncryptedUrl(xP1S3url.toString())) {
 510                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 511                }
 512            } else if (pgpEncrypted != null && Config.supportOpenPgp()) {
 513                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
 514            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
 515                Jid origin;
 516                Set<Jid> fallbacksBySourceId = Collections.emptySet();
 517                if (conversationMultiMode) {
 518                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 519                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 520                    if (origin == null) {
 521                        try {
 522                            fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
 523                        } catch (IllegalArgumentException e) {
 524                            //ignoring
 525                        }
 526                    }
 527                    if (origin == null && fallbacksBySourceId.size() == 0) {
 528                        Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
 529                        return;
 530                    }
 531                } else {
 532                    fallbacksBySourceId = Collections.emptySet();
 533                    origin = from;
 534                }
 535
 536                final boolean liveMessage = query == null && !isTypeGroupChat && mucUserElement == null;
 537                final boolean checkedForDuplicates = liveMessage || (serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId));
 538
 539                if (origin != null) {
 540                    message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, checkedForDuplicates, query != null);
 541                } else {
 542                    Message trial = null;
 543                    for (Jid fallback : fallbacksBySourceId) {
 544                        trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, checkedForDuplicates && fallbacksBySourceId.size() == 1, query != null);
 545                        if (trial != null) {
 546                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
 547                            origin = fallback;
 548                            break;
 549                        }
 550                    }
 551                    message = trial;
 552                }
 553                if (message == null) {
 554                    if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 555                        mXmppConnectionService.updateConversationUi();
 556                    }
 557                    if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
 558                        Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
 559                        if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
 560                            previouslySent.setServerMsgId(serverMsgId);
 561                            mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
 562                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
 563                        }
 564                    }
 565                    return;
 566                }
 567                if (conversationMultiMode) {
 568                    message.setTrueCounterpart(origin);
 569                }
 570            } else if (body == null && oobUrl != null) {
 571                message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
 572                message.setOob(true);
 573                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 574                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 575                }
 576            } else {
 577                message = new Message(conversation, body.content, Message.ENCRYPTION_NONE, status);
 578                if (body.count > 1) {
 579                    message.setBodyLanguage(body.language);
 580                }
 581            }
 582
 583            message.setCounterpart(counterpart);
 584            message.setRemoteMsgId(remoteMsgId);
 585            message.setServerMsgId(serverMsgId);
 586            message.setCarbon(isCarbon);
 587            message.setTime(timestamp);
 588            if (body != null && body.content != null && body.content.equals(oobUrl)) {
 589                message.setOob(true);
 590                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 591                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 592                }
 593            }
 594            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
 595            if (conversationMultiMode) {
 596                message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
 597                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 598                Jid trueCounterpart;
 599                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 600                    trueCounterpart = message.getTrueCounterpart();
 601                } else if (query != null && query.safeToExtractTrueCounterpart()) {
 602                    trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
 603                } else {
 604                    trueCounterpart = fallback;
 605                }
 606                if (trueCounterpart != null && isTypeGroupChat) {
 607                    if (trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
 608                        status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
 609                    } else {
 610                        status = Message.STATUS_RECEIVED;
 611                        message.setCarbon(false);
 612                    }
 613                }
 614                message.setStatus(status);
 615                message.setTrueCounterpart(trueCounterpart);
 616                if (!isTypeGroupChat) {
 617                    message.setType(Message.TYPE_PRIVATE);
 618                }
 619            } else {
 620                updateLastseen(account, from);
 621            }
 622
 623            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
 624                final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
 625                        counterpart,
 626                        message.getStatus() == Message.STATUS_RECEIVED,
 627                        message.isCarbon());
 628                if (replacedMessage != null) {
 629                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
 630                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
 631                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
 632                            && message.getTrueCounterpart() != null
 633                            && replacedMessage.getTrueCounterpart().asBareJid().equals(message.getTrueCounterpart().asBareJid());
 634                    final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
 635                    final boolean duplicate = conversation.hasDuplicateMessage(message);
 636                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches) && !duplicate) {
 637                        Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
 638                        synchronized (replacedMessage) {
 639                            final String uuid = replacedMessage.getUuid();
 640                            replacedMessage.setUuid(UUID.randomUUID().toString());
 641                            replacedMessage.setBody(message.getBody());
 642                            replacedMessage.putEdited(replacedMessage.getRemoteMsgId(), replacedMessage.getServerMsgId());
 643                            replacedMessage.setRemoteMsgId(remoteMsgId);
 644                            if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
 645                                replacedMessage.setServerMsgId(message.getServerMsgId());
 646                            }
 647                            replacedMessage.setEncryption(message.getEncryption());
 648                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
 649                                replacedMessage.markUnread();
 650                            }
 651                            extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 652                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
 653                            if (mXmppConnectionService.confirmMessages()
 654                                    && replacedMessage.getStatus() == Message.STATUS_RECEIVED
 655                                    && (replacedMessage.trusted() || replacedMessage.isPrivateMessage()) //TODO do we really want to send receipts for all PMs?
 656                                    && remoteMsgId != null
 657                                    && !selfAddressed
 658                                    && !isTypeGroupChat) {
 659                                processMessageReceipts(account, packet, query);
 660                            }
 661                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
 662                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
 663                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
 664                            }
 665                        }
 666                        mXmppConnectionService.getNotificationService().updateNotification();
 667                        return;
 668                    } else {
 669                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
 670                    }
 671                }
 672            }
 673
 674            long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
 675            if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
 676                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
 677                return;
 678            }
 679
 680            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
 681                    || message.isPrivateMessage()
 682                    || message.getServerMsgId() != null
 683                    || (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
 684            if (checkForDuplicates) {
 685                final Message duplicate = conversation.findDuplicateMessage(message);
 686                if (duplicate != null) {
 687                    final boolean serverMsgIdUpdated;
 688                    if (duplicate.getStatus() != Message.STATUS_RECEIVED
 689                            && duplicate.getUuid().equals(message.getRemoteMsgId())
 690                            && duplicate.getServerMsgId() == null
 691                            && message.getServerMsgId() != null) {
 692                        duplicate.setServerMsgId(message.getServerMsgId());
 693                        if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
 694                            serverMsgIdUpdated = true;
 695                        } else {
 696                            serverMsgIdUpdated = false;
 697                            Log.e(Config.LOGTAG, "failed to update message");
 698                        }
 699                    } else {
 700                        serverMsgIdUpdated = false;
 701                    }
 702                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
 703                    return;
 704                }
 705            }
 706
 707            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 708                conversation.prepend(query.getActualInThisQuery(), message);
 709            } else {
 710                conversation.add(message);
 711            }
 712            if (query != null) {
 713                query.incrementActualMessageCount();
 714            }
 715
 716            if (query == null || query.isCatchup()) { //either no mam or catchup
 717                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
 718                    mXmppConnectionService.markRead(conversation);
 719                    if (query == null) {
 720                        activateGracePeriod(account);
 721                    }
 722                } else {
 723                    message.markUnread();
 724                    notify = true;
 725                }
 726            }
 727
 728            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 729                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
 730            } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 731                notify = false;
 732            }
 733
 734            if (query == null) {
 735                extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 736                mXmppConnectionService.updateConversationUi();
 737            }
 738
 739            if (mXmppConnectionService.confirmMessages()
 740                    && message.getStatus() == Message.STATUS_RECEIVED
 741                    && (message.trusted() || message.isPrivateMessage())
 742                    && remoteMsgId != null
 743                    && !selfAddressed
 744                    && !isTypeGroupChat) {
 745                processMessageReceipts(account, packet, query);
 746            }
 747
 748            mXmppConnectionService.databaseBackend.createMessage(message);
 749            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
 750            if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
 751                manager.createNewDownloadConnection(message);
 752            } else if (notify) {
 753                if (query != null && query.isCatchup()) {
 754                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
 755                } else {
 756                    mXmppConnectionService.getNotificationService().push(message);
 757                }
 758            }
 759        } else if (!packet.hasChild("body")) { //no body
 760
 761            final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
 762            if (axolotlEncrypted != null) {
 763                Jid origin;
 764                if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 765                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 766                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 767                    if (origin == null) {
 768                        Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
 769                        return;
 770                    }
 771                } else if (isTypeGroupChat) {
 772                    return;
 773                } else {
 774                    origin = from;
 775                }
 776                try {
 777                    final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
 778                    account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
 779                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
 780                } catch (Exception e) {
 781                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
 782                    return;
 783                }
 784            }
 785
 786            if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 787                mXmppConnectionService.updateConversationUi();
 788            }
 789
 790            if (isTypeGroupChat) {
 791                if (packet.hasChild("subject")) { //TODO usually we would want to check for lack of body; however some servers do set a body :(
 792                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 793                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
 794                        final LocalizedContent subject = packet.findInternationalizedChildContentInDefaultNamespace("subject");
 795                        if (subject != null && conversation.getMucOptions().setSubject(subject.content)) {
 796                            mXmppConnectionService.updateConversation(conversation);
 797                        }
 798                        mXmppConnectionService.updateConversationUi();
 799                        return;
 800                    }
 801                }
 802            }
 803            if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
 804                for (Element child : mucUserElement.getChildren()) {
 805                    if ("status".equals(child.getName())) {
 806                        try {
 807                            int code = Integer.parseInt(child.getAttribute("code"));
 808                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
 809                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
 810                                break;
 811                            }
 812                        } catch (Exception e) {
 813                            //ignored
 814                        }
 815                    } else if ("item".equals(child.getName())) {
 816                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
 817                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
 818                                + user.getRealJid() + " to " + user.getAffiliation() + " in "
 819                                + conversation.getJid().asBareJid());
 820                        if (!user.realJidMatchesAccount()) {
 821                            boolean isNew = conversation.getMucOptions().updateUser(user);
 822                            mXmppConnectionService.getAvatarService().clear(conversation);
 823                            mXmppConnectionService.updateMucRosterUi();
 824                            mXmppConnectionService.updateConversationUi();
 825                            Contact contact = user.getContact();
 826                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
 827                                Jid jid = user.getRealJid();
 828                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
 829                                if (cryptoTargets.remove(user.getRealJid())) {
 830                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
 831                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
 832                                    mXmppConnectionService.updateConversation(conversation);
 833                                }
 834                            } else if (isNew
 835                                    && user.getRealJid() != null
 836                                    && conversation.getMucOptions().isPrivateAndNonAnonymous()
 837                                    && (contact == null || !contact.mutualPresenceSubscription())
 838                                    && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
 839                                account.getAxolotlService().fetchDeviceIds(user.getRealJid());
 840                            }
 841                        }
 842                    }
 843                }
 844            }
 845            if (!isTypeGroupChat) {
 846                for (Element child : packet.getChildren()) {
 847                    if (Namespace.JINGLE_MESSAGE.equals(child.getNamespace()) && JINGLE_MESSAGE_ELEMENT_NAMES.contains(child.getName())) {
 848                        final String action = child.getName();
 849                        final String sessionId = child.getAttribute("id");
 850                        if (sessionId == null) {
 851                            break;
 852                        }
 853                        if (query == null) {
 854                            if (serverMsgId == null) {
 855                                serverMsgId = extractStanzaId(account, packet);
 856                            }
 857                            mXmppConnectionService.getJingleConnectionManager().deliverMessage(account, packet.getTo(), packet.getFrom(), child, remoteMsgId, serverMsgId, timestamp);
 858                            if (!account.getJid().asBareJid().equals(from.asBareJid())) {
 859                                processMessageReceipts(account, packet, query);
 860                            }
 861                        } else if (query.isCatchup()) {
 862                            if ("propose".equals(action)) {
 863                                final Element description = child.findChild("description");
 864                                final String namespace = description == null ? null : description.getNamespace();
 865                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 866                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 867                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 868                                    if (preExistingMessage != null) {
 869                                        preExistingMessage.setServerMsgId(serverMsgId);
 870                                        mXmppConnectionService.updateMessage(preExistingMessage);
 871                                        break;
 872                                    }
 873                                    final Message message = new Message(
 874                                            c,
 875                                            status,
 876                                            Message.TYPE_RTP_SESSION,
 877                                            sessionId
 878                                    );
 879                                    message.setServerMsgId(serverMsgId);
 880                                    message.setTime(timestamp);
 881                                    message.setBody(new RtpSessionStatus(false, 0).toString());
 882                                    c.add(message);
 883                                    mXmppConnectionService.databaseBackend.createMessage(message);
 884                                }
 885                            } else if ("proceed".equals(action)) {
 886                                //status needs to be flipped to find the original propose
 887                                final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 888                                final int s = packet.fromAccount(account) ? Message.STATUS_RECEIVED : Message.STATUS_SEND;
 889                                final Message message = c.findRtpSession(sessionId, s);
 890                                if (message != null) {
 891                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 892                                    if (serverMsgId != null) {
 893                                        message.setServerMsgId(serverMsgId);
 894                                    }
 895                                    message.setTime(timestamp);
 896                                    mXmppConnectionService.updateMessage(message, true);
 897                                } else {
 898                                    Log.d(Config.LOGTAG, "unable to find original rtp session message for received propose");
 899                                }
 900
 901                            }
 902                        } else {
 903                            //MAM reloads (non catchups
 904                            if ("propose".equals(action)) {
 905                                final Element description = child.findChild("description");
 906                                final String namespace = description == null ? null : description.getNamespace();
 907                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 908                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 909                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 910                                    if (preExistingMessage != null) {
 911                                        preExistingMessage.setServerMsgId(serverMsgId);
 912                                        mXmppConnectionService.updateMessage(preExistingMessage);
 913                                        break;
 914                                    }
 915                                    final Message message = new Message(
 916                                            c,
 917                                            status,
 918                                            Message.TYPE_RTP_SESSION,
 919                                            sessionId
 920                                    );
 921                                    message.setServerMsgId(serverMsgId);
 922                                    message.setTime(timestamp);
 923                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 924                                    if (query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 925                                        c.prepend(query.getActualInThisQuery(), message);
 926                                    } else {
 927                                        c.add(message);
 928                                    }
 929                                    query.incrementActualMessageCount();
 930                                    mXmppConnectionService.databaseBackend.createMessage(message);
 931                                }
 932                            }
 933                        }
 934                        break;
 935                    }
 936                }
 937            }
 938        }
 939
 940        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
 941        if (received == null) {
 942            received = packet.findChild("received", "urn:xmpp:receipts");
 943        }
 944        if (received != null) {
 945            String id = received.getAttribute("id");
 946            if (packet.fromAccount(account)) {
 947                if (query != null && id != null && packet.getTo() != null) {
 948                    query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
 949                }
 950            } else if (id != null) {
 951                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 952                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 953                    mXmppConnectionService.getJingleConnectionManager()
 954                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.DISCOVERED);
 955                } else {
 956                    mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_RECEIVED);
 957                }
 958            }
 959        }
 960        Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
 961        if (displayed != null) {
 962            final String id = displayed.getAttribute("id");
 963            final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
 964            if (packet.fromAccount(account) && !selfAddressed) {
 965                dismissNotification(account, counterpart, query, id);
 966                if (query == null) {
 967                    activateGracePeriod(account);
 968                }
 969            } else if (isTypeGroupChat) {
 970                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
 971                final Message message;
 972                if (conversation != null && id != null) {
 973                    if (sender != null) {
 974                        message = conversation.findMessageWithRemoteId(id, sender);
 975                    } else {
 976                        message = conversation.findMessageWithServerMsgId(id);
 977                    }
 978                } else {
 979                    message = null;
 980                }
 981                if (message != null) {
 982                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 983                    final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
 984                    final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
 985                    if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
 986                        if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
 987                            mXmppConnectionService.markRead(conversation);
 988                        }
 989                    } else if (!counterpart.isBareJid() && trueJid != null) {
 990                        final ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
 991                        if (message.addReadByMarker(readByMarker)) {
 992                            mXmppConnectionService.updateMessage(message, false);
 993                        }
 994                    }
 995                }
 996            } else {
 997                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
 998                Message message = displayedMessage == null ? null : displayedMessage.prev();
 999                while (message != null
1000                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
1001                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
1002                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
1003                    message = message.prev();
1004                }
1005                if (displayedMessage != null && selfAddressed) {
1006                    dismissNotification(account, counterpart, query, id);
1007                }
1008            }
1009        }
1010
1011        final Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
1012        if (event != null && InvalidJid.hasValidFrom(original)) {
1013            if (event.hasChild("items")) {
1014                parseEvent(event, original.getFrom(), account);
1015            } else if (event.hasChild("delete")) {
1016                parseDeleteEvent(event, original.getFrom(), account);
1017            } else if (event.hasChild("purge")) {
1018                parsePurgeEvent(event, original.getFrom(), account);
1019            }
1020        }
1021
1022        final String nick = packet.findChildContent("nick", Namespace.NICK);
1023        if (nick != null && InvalidJid.hasValidFrom(original)) {
1024            final Contact contact = account.getRoster().getContact(from);
1025            if (contact.setPresenceName(nick)) {
1026                mXmppConnectionService.syncRoster(account);
1027                mXmppConnectionService.getAvatarService().clear(contact);
1028            }
1029        }
1030    }
1031
1032    private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query, final String id) {
1033        final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1034        if (conversation != null && (query == null || query.isCatchup())) {
1035            final String displayableId = conversation.findMostRecentRemoteDisplayableId();
1036            if (displayableId != null && displayableId.equals(id)) {
1037                mXmppConnectionService.markRead(conversation);
1038            } else {
1039                Log.w(Config.LOGTAG, account.getJid().asBareJid() + ": received dismissing display marker that did not match our last id in that conversation");
1040            }
1041        }
1042    }
1043
1044    private void processMessageReceipts(Account account, MessagePacket packet, MessageArchiveService.Query query) {
1045        final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
1046        final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
1047        if (query == null) {
1048            final ArrayList<String> receiptsNamespaces = new ArrayList<>();
1049            if (markable) {
1050                receiptsNamespaces.add("urn:xmpp:chat-markers:0");
1051            }
1052            if (request) {
1053                receiptsNamespaces.add("urn:xmpp:receipts");
1054            }
1055            if (receiptsNamespaces.size() > 0) {
1056                MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
1057                        packet,
1058                        receiptsNamespaces,
1059                        packet.getType());
1060                mXmppConnectionService.sendMessagePacket(account, receipt);
1061            }
1062        } else if (query.isCatchup()) {
1063            if (request) {
1064                query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), packet.getId()));
1065            }
1066        }
1067    }
1068
1069    private void activateGracePeriod(Account account) {
1070        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
1071        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
1072        account.activateGracePeriod(duration);
1073    }
1074
1075    private class Invite {
1076        final Jid jid;
1077        final String password;
1078        final boolean direct;
1079        final Jid inviter;
1080
1081        Invite(Jid jid, String password, boolean direct, Jid inviter) {
1082            this.jid = jid;
1083            this.password = password;
1084            this.direct = direct;
1085            this.inviter = inviter;
1086        }
1087
1088        public boolean execute(Account account) {
1089            if (jid != null) {
1090                Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
1091                if (conversation.getMucOptions().online()) {
1092                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received invite to " + jid + " but muc is considered to be online");
1093                    mXmppConnectionService.mucSelfPingAndRejoin(conversation);
1094                } else {
1095                    conversation.getMucOptions().setPassword(password);
1096                    mXmppConnectionService.databaseBackend.updateConversation(conversation);
1097                    final Contact contact = inviter != null ? account.getRoster().getContactFromContactList(inviter) : null;
1098                    mXmppConnectionService.joinMuc(conversation, contact != null && contact.mutualPresenceSubscription());
1099                    mXmppConnectionService.updateConversationUi();
1100                }
1101                return true;
1102            }
1103            return false;
1104        }
1105    }
1106}