1package eu.siacs.conversations.parser;
   2
   3import android.util.Log;
   4import android.util.Pair;
   5
   6import com.cheogram.android.BobTransfer;
   7
   8import java.net.URISyntaxException;
   9import java.text.SimpleDateFormat;
  10import java.util.ArrayList;
  11import java.util.Arrays;
  12import java.util.Collections;
  13import java.util.Date;
  14import java.util.List;
  15import java.util.Locale;
  16import java.util.Map;
  17import java.util.Set;
  18import java.util.UUID;
  19
  20import eu.siacs.conversations.Config;
  21import eu.siacs.conversations.R;
  22import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  23import eu.siacs.conversations.crypto.axolotl.BrokenSessionException;
  24import eu.siacs.conversations.crypto.axolotl.NotEncryptedForThisDeviceException;
  25import eu.siacs.conversations.crypto.axolotl.OutdatedSenderException;
  26import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  27import eu.siacs.conversations.entities.Account;
  28import eu.siacs.conversations.entities.Bookmark;
  29import eu.siacs.conversations.entities.Contact;
  30import eu.siacs.conversations.entities.Conversation;
  31import eu.siacs.conversations.entities.Conversational;
  32import eu.siacs.conversations.entities.Message;
  33import eu.siacs.conversations.entities.MucOptions;
  34import eu.siacs.conversations.entities.ReadByMarker;
  35import eu.siacs.conversations.entities.ReceiptRequest;
  36import eu.siacs.conversations.entities.RtpSessionStatus;
  37import eu.siacs.conversations.http.HttpConnectionManager;
  38import eu.siacs.conversations.services.MessageArchiveService;
  39import eu.siacs.conversations.services.QuickConversationsService;
  40import eu.siacs.conversations.services.XmppConnectionService;
  41import eu.siacs.conversations.utils.CryptoHelper;
  42import eu.siacs.conversations.xml.Element;
  43import eu.siacs.conversations.xml.LocalizedContent;
  44import eu.siacs.conversations.xml.Namespace;
  45import eu.siacs.conversations.xmpp.InvalidJid;
  46import eu.siacs.conversations.xmpp.Jid;
  47import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  48import eu.siacs.conversations.xmpp.chatstate.ChatState;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  51import eu.siacs.conversations.xmpp.pep.Avatar;
  52import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  53
  54public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
  55
  56    private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
  57
  58    private static final List<String> JINGLE_MESSAGE_ELEMENT_NAMES = Arrays.asList("accept", "propose", "proceed", "reject", "retract");
  59
  60    public MessageParser(XmppConnectionService service) {
  61        super(service);
  62    }
  63
  64    private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
  65        final Jid by;
  66        final boolean safeToExtract;
  67        if (isTypeGroupChat) {
  68            by = conversation.getJid().asBareJid();
  69            safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
  70        } else {
  71            Account account = conversation.getAccount();
  72            by = account.getJid().asBareJid();
  73            safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  74        }
  75        return safeToExtract ? extractStanzaId(packet, by) : null;
  76    }
  77
  78    private static String extractStanzaId(Account account, Element packet) {
  79        final boolean safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  80        return safeToExtract ? extractStanzaId(packet, account.getJid().asBareJid()) : null;
  81    }
  82
  83    private static String extractStanzaId(Element packet, Jid by) {
  84        for (Element child : packet.getChildren()) {
  85            if (child.getName().equals("stanza-id")
  86                    && Namespace.STANZA_IDS.equals(child.getNamespace())
  87                    && by.equals(InvalidJid.getNullForInvalid(child.getAttributeAsJid("by")))) {
  88                return child.getAttribute("id");
  89            }
  90        }
  91        return null;
  92    }
  93
  94    private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
  95        final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
  96        Jid result = item == null ? null : InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
  97        return result != null ? result : fallback;
  98    }
  99
 100    private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
 101        ChatState state = ChatState.parse(packet);
 102        if (state != null && c != null) {
 103            final Account account = c.getAccount();
 104            final Jid from = packet.getFrom();
 105            if (from.asBareJid().equals(account.getJid().asBareJid())) {
 106                c.setOutgoingChatState(state);
 107                if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 108                    if (c.getContact().isSelf()) {
 109                        return false;
 110                    }
 111                    mXmppConnectionService.markRead(c);
 112                    activateGracePeriod(account);
 113                }
 114                return false;
 115            } else {
 116                if (isTypeGroupChat) {
 117                    MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 118                    if (user != null) {
 119                        return user.setChatState(state);
 120                    } else {
 121                        return false;
 122                    }
 123                } else {
 124                    return c.setIncomingChatState(state);
 125                }
 126            }
 127        }
 128        return false;
 129    }
 130
 131    private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, final boolean checkedForDuplicates, boolean postpone) {
 132        final AxolotlService service = conversation.getAccount().getAxolotlService();
 133        final XmppAxolotlMessage xmppAxolotlMessage;
 134        try {
 135            xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
 136        } catch (Exception e) {
 137            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
 138            return null;
 139        }
 140        if (xmppAxolotlMessage.hasPayload()) {
 141            final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage;
 142            try {
 143                plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
 144            } catch (BrokenSessionException e) {
 145                if (checkedForDuplicates) {
 146                    if (service.trustedOrPreviouslyResponded(from.asBareJid())) {
 147                        service.reportBrokenSessionException(e, postpone);
 148                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 149                    } else {
 150                        Log.d(Config.LOGTAG, "ignoring broken session exception because contact was not trusted");
 151                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 152                    }
 153                } else {
 154                    Log.d(Config.LOGTAG, "ignoring broken session exception because checkForDuplicates failed");
 155                    return null;
 156                }
 157            } catch (NotEncryptedForThisDeviceException e) {
 158                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE, status);
 159            } catch (OutdatedSenderException e) {
 160                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 161            }
 162            if (plaintextMessage != null) {
 163                Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
 164                finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
 165                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
 166                return finishedMessage;
 167            }
 168        } else {
 169            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": received OMEMO key transport message");
 170            service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
 171        }
 172        return null;
 173    }
 174
 175    private Invite extractInvite(Element message) {
 176        final Element mucUser = message.findChild("x", Namespace.MUC_USER);
 177        if (mucUser != null) {
 178            Element invite = mucUser.findChild("invite");
 179            if (invite != null) {
 180                String password = mucUser.findChildContent("password");
 181                Jid from = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("from"));
 182                Jid room = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 183                if (room == null) {
 184                    return null;
 185                }
 186                return new Invite(room, password, false, from);
 187            }
 188        }
 189        final Element conference = message.findChild("x", "jabber:x:conference");
 190        if (conference != null) {
 191            Jid from = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 192            Jid room = InvalidJid.getNullForInvalid(conference.getAttributeAsJid("jid"));
 193            if (room == null) {
 194                return null;
 195            }
 196            return new Invite(room, conference.getAttribute("password"), true, from);
 197        }
 198        return null;
 199    }
 200
 201    private void parseEvent(final Element event, final Jid from, final Account account) {
 202        final Element items = event.findChild("items");
 203        final String node = items == null ? null : items.getAttribute("node");
 204        if ("urn:xmpp:avatar:metadata".equals(node)) {
 205            Avatar avatar = Avatar.parseMetadata(items);
 206            if (avatar != null) {
 207                avatar.owner = from.asBareJid();
 208                if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
 209                    if (account.getJid().asBareJid().equals(from)) {
 210                        if (account.setAvatar(avatar.getFilename())) {
 211                            mXmppConnectionService.databaseBackend.updateAccount(account);
 212                            mXmppConnectionService.notifyAccountAvatarHasChanged(account);
 213                        }
 214                        mXmppConnectionService.getAvatarService().clear(account);
 215                        mXmppConnectionService.updateConversationUi();
 216                        mXmppConnectionService.updateAccountUi();
 217                    } else {
 218                        final Contact contact = account.getRoster().getContact(from);
 219                        contact.setAvatar(avatar);
 220                        mXmppConnectionService.syncRoster(account);
 221                        mXmppConnectionService.getAvatarService().clear(contact);
 222                        mXmppConnectionService.updateConversationUi();
 223                        mXmppConnectionService.updateRosterUi();
 224                    }
 225                } else if (mXmppConnectionService.isDataSaverDisabled()) {
 226                    mXmppConnectionService.fetchAvatar(account, avatar);
 227                }
 228            }
 229        } else if (Namespace.NICK.equals(node)) {
 230            final Element i = items.findChild("item");
 231            final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
 232            if (nick != null) {
 233                setNick(account, from, nick);
 234            }
 235        } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
 236            Element item = items.findChild("item");
 237            Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
 238            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
 239            AxolotlService axolotlService = account.getAxolotlService();
 240            axolotlService.registerDevices(from, deviceIds);
 241        } else if (Namespace.BOOKMARKS.equals(node) && account.getJid().asBareJid().equals(from)) {
 242            if (account.getXmppConnection().getFeatures().bookmarksConversion()) {
 243                final Element i = items.findChild("item");
 244                final Element storage = i == null ? null : i.findChild("storage", Namespace.BOOKMARKS);
 245                Map<Jid, Bookmark> bookmarks = Bookmark.parseFromStorage(storage, account);
 246                mXmppConnectionService.processBookmarksInitial(account, bookmarks, true);
 247                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": processing bookmark PEP event");
 248            } else {
 249                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring bookmark PEP event because bookmark conversion was not detected");
 250            }
 251        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 252            final Element item = items.findChild("item");
 253            final Element retract = items.findChild("retract");
 254            if (item != null) {
 255                final Bookmark bookmark = Bookmark.parseFromItem(item, account);
 256                if (bookmark != null) {
 257                    account.putBookmark(bookmark);
 258                    mXmppConnectionService.processModifiedBookmark(bookmark);
 259                    mXmppConnectionService.updateConversationUi();
 260                }
 261            }
 262            if (retract != null) {
 263                final Jid id = InvalidJid.getNullForInvalid(retract.getAttributeAsJid("id"));
 264                if (id != null) {
 265                    account.removeBookmark(id);
 266                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmark for " + id);
 267                    mXmppConnectionService.processDeletedBookmark(account, id);
 268                    mXmppConnectionService.updateConversationUi();
 269                }
 270            }
 271        } else {
 272            Log.d(Config.LOGTAG, account.getJid().asBareJid() + " received pubsub notification for node=" + node);
 273        }
 274    }
 275
 276    private void parseDeleteEvent(final Element event, final Jid from, final Account account) {
 277        final Element delete = event.findChild("delete");
 278        final String node = delete == null ? null : delete.getAttribute("node");
 279        if (Namespace.NICK.equals(node)) {
 280            Log.d(Config.LOGTAG, "parsing nick delete event from " + from);
 281            setNick(account, from, null);
 282        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 283            account.setBookmarks(Collections.emptyMap());
 284            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmarks node");
 285        }
 286    }
 287
 288    private void parsePurgeEvent(final Element event, final Jid from, final Account account) {
 289        final Element purge = event.findChild("purge");
 290        final String node = purge == null ? null : purge.getAttribute("node");
 291        if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 292            account.setBookmarks(Collections.emptyMap());
 293            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": purged bookmarks");
 294        }
 295    }
 296
 297    private void setNick(Account account, Jid user, String nick) {
 298        if (user.asBareJid().equals(account.getJid().asBareJid())) {
 299            account.setDisplayName(nick);
 300            if (QuickConversationsService.isQuicksy()) {
 301                mXmppConnectionService.getAvatarService().clear(account);
 302            }
 303        } else {
 304            Contact contact = account.getRoster().getContact(user);
 305            if (contact.setPresenceName(nick)) {
 306                mXmppConnectionService.syncRoster(account);
 307                mXmppConnectionService.getAvatarService().clear(contact);
 308            }
 309        }
 310        mXmppConnectionService.updateConversationUi();
 311        mXmppConnectionService.updateAccountUi();
 312    }
 313
 314    private boolean handleErrorMessage(final Account account, final MessagePacket packet) {
 315        if (packet.getType() == MessagePacket.TYPE_ERROR) {
 316            if (packet.fromServer(account)) {
 317                final Pair<MessagePacket, Long> forwarded = packet.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
 318                if (forwarded != null) {
 319                    return handleErrorMessage(account, forwarded.first);
 320                }
 321            }
 322            final Jid from = packet.getFrom();
 323            final String id = packet.getId();
 324            if (from != null && id != null) {
 325                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 326                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 327                    mXmppConnectionService.getJingleConnectionManager()
 328                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.FAILED);
 329                    return true;
 330                }
 331                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX)) {
 332                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX.length());
 333                    final String message = extractErrorMessage(packet);
 334                    mXmppConnectionService.getJingleConnectionManager().failProceed(account, from, sessionId, message);
 335                    return true;
 336                }
 337                mXmppConnectionService.markMessage(account,
 338                        from.asBareJid(),
 339                        id,
 340                        Message.STATUS_SEND_FAILED,
 341                        extractErrorMessage(packet));
 342                final Element error = packet.findChild("error");
 343                final boolean pingWorthyError = error != null && (error.hasChild("not-acceptable") || error.hasChild("remote-server-timeout") || error.hasChild("remote-server-not-found"));
 344                if (pingWorthyError) {
 345                    Conversation conversation = mXmppConnectionService.find(account, from);
 346                    if (conversation != null && conversation.getMode() == Conversational.MODE_MULTI) {
 347                        if (conversation.getMucOptions().online()) {
 348                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received ping worthy error for seemingly online muc at " + from);
 349                            mXmppConnectionService.mucSelfPingAndRejoin(conversation);
 350                        }
 351                    }
 352                }
 353            }
 354            return true;
 355        }
 356        return false;
 357    }
 358
 359    @Override
 360    public void onMessagePacketReceived(Account account, MessagePacket original) {
 361        if (handleErrorMessage(account, original)) {
 362            return;
 363        }
 364        final MessagePacket packet;
 365        Long timestamp = null;
 366        boolean isCarbon = false;
 367        String serverMsgId = null;
 368        final Element fin = original.findChild("fin", MessageArchiveService.Version.MAM_0.namespace);
 369        if (fin != null) {
 370            mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
 371            return;
 372        }
 373        final Element result = MessageArchiveService.Version.findResult(original);
 374        final String queryId = result == null ? null : result.getAttribute("queryid");
 375        final MessageArchiveService.Query query = queryId == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(queryId);
 376        if (query != null && query.validFrom(original.getFrom())) {
 377            final Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", query.version.namespace);
 378            if (f == null) {
 379                return;
 380            }
 381            timestamp = f.second;
 382            packet = f.first;
 383            serverMsgId = result.getAttribute("id");
 384            query.incrementMessageCount();
 385            if (handleErrorMessage(account, packet)) {
 386                return;
 387            }
 388        } else if (query != null) {
 389            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received mam result with invalid from (" + original.getFrom() + ") or queryId (" + queryId + ")");
 390            return;
 391        } else if (original.fromServer(account)) {
 392            Pair<MessagePacket, Long> f;
 393            f = original.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
 394            f = f == null ? original.getForwardedMessagePacket("sent", "urn:xmpp:carbons:2") : f;
 395            packet = f != null ? f.first : original;
 396            if (handleErrorMessage(account, packet)) {
 397                return;
 398            }
 399            timestamp = f != null ? f.second : null;
 400            isCarbon = f != null;
 401        } else {
 402            packet = original;
 403        }
 404
 405        if (timestamp == null) {
 406            timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
 407        }
 408        final LocalizedContent body = packet.getBody();
 409        final Element mucUserElement = packet.findChild("x", Namespace.MUC_USER);
 410        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
 411        final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
 412        final Element oob = packet.findChild("x", Namespace.OOB);
 413        final String oobUrl = oob != null ? oob.findChildContent("url") : null;
 414        final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
 415        final Element axolotlEncrypted = packet.findChildEnsureSingle(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
 416        int status;
 417        final Jid counterpart;
 418        final Jid to = packet.getTo();
 419        final Jid from = packet.getFrom();
 420        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
 421        final String remoteMsgId;
 422        if (originId != null && originId.getAttribute("id") != null) {
 423            remoteMsgId = originId.getAttribute("id");
 424        } else {
 425            remoteMsgId = packet.getId();
 426        }
 427        boolean notify = false;
 428
 429        if (from == null || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
 430            Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
 431            return;
 432        }
 433
 434        boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
 435        if (query != null && !query.muc() && isTypeGroupChat) {
 436            Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": received groupchat (" + from + ") message on regular MAM request. skipping");
 437            return;
 438        }
 439        boolean isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
 440        boolean selfAddressed;
 441        if (packet.fromAccount(account)) {
 442            status = Message.STATUS_SEND;
 443            selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
 444            if (selfAddressed) {
 445                counterpart = from;
 446            } else {
 447                counterpart = to != null ? to : account.getJid();
 448            }
 449        } else {
 450            status = Message.STATUS_RECEIVED;
 451            counterpart = from;
 452            selfAddressed = false;
 453        }
 454
 455        final Invite invite = extractInvite(packet);
 456        if (invite != null) {
 457            if (isTypeGroupChat) {
 458                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring invite to " + invite.jid + " because type=groupchat");
 459            } else if (invite.direct && (mucUserElement != null || invite.inviter == null || mXmppConnectionService.isMuc(account, invite.inviter))) {
 460                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring direct invite to " + invite.jid + " because it was received in MUC");
 461            } else {
 462                invite.execute(account);
 463                return;
 464            }
 465        }
 466
 467        if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null) && !isMucStatusMessage) {
 468            final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain().toEscapedString());
 469            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 470            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
 471
 472            if (serverMsgId == null) {
 473                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
 474            }
 475
 476
 477            if (selfAddressed) {
 478                if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
 479                    return;
 480                }
 481                status = Message.STATUS_RECEIVED;
 482                if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId, counterpart) != null) {
 483                    return;
 484                }
 485            }
 486
 487            if (isTypeGroupChat) {
 488                if (conversation.getMucOptions().isSelf(counterpart)) {
 489                    status = Message.STATUS_SEND_RECEIVED;
 490                    isCarbon = true; //not really carbon but received from another resource
 491                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId, body)) {
 492                        return;
 493                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
 494                        if (body != null) {
 495                            Message message = conversation.findSentMessageWithBody(body.content);
 496                            if (message != null) {
 497                                mXmppConnectionService.markMessage(message, status);
 498                                return;
 499                            }
 500                        }
 501                    }
 502                } else {
 503                    status = Message.STATUS_RECEIVED;
 504                }
 505            }
 506            final Message message;
 507            if (pgpEncrypted != null && Config.supportOpenPgp()) {
 508                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
 509            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
 510                Jid origin;
 511                Set<Jid> fallbacksBySourceId = Collections.emptySet();
 512                if (conversationMultiMode) {
 513                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 514                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 515                    if (origin == null) {
 516                        try {
 517                            fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
 518                        } catch (IllegalArgumentException e) {
 519                            //ignoring
 520                        }
 521                    }
 522                    if (origin == null && fallbacksBySourceId.size() == 0) {
 523                        Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
 524                        return;
 525                    }
 526                } else {
 527                    fallbacksBySourceId = Collections.emptySet();
 528                    origin = from;
 529                }
 530
 531                final boolean liveMessage = query == null && !isTypeGroupChat && mucUserElement == null;
 532                final boolean checkedForDuplicates = liveMessage || (serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId));
 533
 534                if (origin != null) {
 535                    message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, checkedForDuplicates, query != null);
 536                } else {
 537                    Message trial = null;
 538                    for (Jid fallback : fallbacksBySourceId) {
 539                        trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, checkedForDuplicates && fallbacksBySourceId.size() == 1, query != null);
 540                        if (trial != null) {
 541                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
 542                            origin = fallback;
 543                            break;
 544                        }
 545                    }
 546                    message = trial;
 547                }
 548                if (message == null) {
 549                    if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 550                        mXmppConnectionService.updateConversationUi();
 551                    }
 552                    if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
 553                        Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
 554                        if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
 555                            previouslySent.setServerMsgId(serverMsgId);
 556                            mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
 557                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
 558                        }
 559                    }
 560                    return;
 561                }
 562                if (conversationMultiMode) {
 563                    message.setTrueCounterpart(origin);
 564                }
 565            } else if (body == null && oobUrl != null) {
 566                message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
 567                message.setOob(oobUrl);
 568                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 569                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 570                }
 571            } else {
 572                message = new Message(conversation, body.content, Message.ENCRYPTION_NONE, status);
 573                if (body.count > 1) {
 574                    message.setBodyLanguage(body.language);
 575                }
 576            }
 577
 578            message.setSubject(original.findChildContent("subject"));
 579            message.setCounterpart(counterpart);
 580            message.setRemoteMsgId(remoteMsgId);
 581            message.setServerMsgId(serverMsgId);
 582            message.setCarbon(isCarbon);
 583            message.setTime(timestamp);
 584            if (oobUrl != null) {
 585                message.setOob(oobUrl);
 586                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 587                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 588                }
 589            }
 590            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
 591            for (Element el : packet.getChildren()) {
 592                if (el.getName().equals("query") && el.getNamespace().equals("http://jabber.org/protocol/disco#items") && el.getAttribute("node").equals("http://jabber.org/protocol/commands")) {
 593                    message.addPayload(el);
 594                }
 595            }
 596            if (conversationMultiMode) {
 597                message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
 598                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 599                Jid trueCounterpart;
 600                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 601                    trueCounterpart = message.getTrueCounterpart();
 602                } else if (query != null && query.safeToExtractTrueCounterpart()) {
 603                    trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
 604                } else {
 605                    trueCounterpart = fallback;
 606                }
 607                if (trueCounterpart != null && isTypeGroupChat) {
 608                    if (trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
 609                        status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
 610                    } else {
 611                        status = Message.STATUS_RECEIVED;
 612                        message.setCarbon(false);
 613                    }
 614                }
 615                message.setStatus(status);
 616                message.setTrueCounterpart(trueCounterpart);
 617                if (!isTypeGroupChat) {
 618                    message.setType(Message.TYPE_PRIVATE);
 619                }
 620            } else {
 621                updateLastseen(account, from);
 622            }
 623
 624            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
 625                final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
 626                        counterpart,
 627                        message.getStatus() == Message.STATUS_RECEIVED,
 628                        message.isCarbon());
 629                if (replacedMessage != null) {
 630                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
 631                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
 632                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
 633                            && message.getTrueCounterpart() != null
 634                            && replacedMessage.getTrueCounterpart().asBareJid().equals(message.getTrueCounterpart().asBareJid());
 635                    final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
 636                    final boolean duplicate = conversation.hasDuplicateMessage(message);
 637                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches) && !duplicate) {
 638                        Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
 639                        synchronized (replacedMessage) {
 640                            final String uuid = replacedMessage.getUuid();
 641                            replacedMessage.setUuid(UUID.randomUUID().toString());
 642                            replacedMessage.setBody(message.getBody());
 643                            replacedMessage.putEdited(replacedMessage.getRemoteMsgId(), replacedMessage.getServerMsgId());
 644                            replacedMessage.setRemoteMsgId(remoteMsgId);
 645                            if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
 646                                replacedMessage.setServerMsgId(message.getServerMsgId());
 647                            }
 648                            replacedMessage.setEncryption(message.getEncryption());
 649                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
 650                                replacedMessage.markUnread();
 651                            }
 652                            extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 653                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
 654                            if (mXmppConnectionService.confirmMessages()
 655                                    && replacedMessage.getStatus() == Message.STATUS_RECEIVED
 656                                    && (replacedMessage.trusted() || replacedMessage.isPrivateMessage()) //TODO do we really want to send receipts for all PMs?
 657                                    && remoteMsgId != null
 658                                    && !selfAddressed
 659                                    && !isTypeGroupChat) {
 660                                processMessageReceipts(account, packet, remoteMsgId, query);
 661                            }
 662                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
 663                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
 664                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
 665                            }
 666                        }
 667                        mXmppConnectionService.getNotificationService().updateNotification();
 668                        return;
 669                    } else {
 670                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
 671                    }
 672                }
 673            }
 674
 675            long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
 676            if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
 677                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
 678                return;
 679            }
 680
 681            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
 682                    || message.isPrivateMessage()
 683                    || message.getServerMsgId() != null
 684                    || (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
 685            if (checkForDuplicates) {
 686                final Message duplicate = conversation.findDuplicateMessage(message);
 687                if (duplicate != null) {
 688                    final boolean serverMsgIdUpdated;
 689                    if (duplicate.getStatus() != Message.STATUS_RECEIVED
 690                            && duplicate.getUuid().equals(message.getRemoteMsgId())
 691                            && duplicate.getServerMsgId() == null
 692                            && message.getServerMsgId() != null) {
 693                        duplicate.setServerMsgId(message.getServerMsgId());
 694                        if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
 695                            serverMsgIdUpdated = true;
 696                        } else {
 697                            serverMsgIdUpdated = false;
 698                            Log.e(Config.LOGTAG, "failed to update message");
 699                        }
 700                    } else {
 701                        serverMsgIdUpdated = false;
 702                    }
 703                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
 704                    return;
 705                }
 706            }
 707
 708            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 709                conversation.prepend(query.getActualInThisQuery(), message);
 710            } else {
 711                conversation.add(message);
 712            }
 713            if (query != null) {
 714                query.incrementActualMessageCount();
 715            }
 716
 717            if (query == null || query.isCatchup()) { //either no mam or catchup
 718                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
 719                    mXmppConnectionService.markRead(conversation);
 720                    if (query == null) {
 721                        activateGracePeriod(account);
 722                    }
 723                } else {
 724                    message.markUnread();
 725                    notify = true;
 726                }
 727            }
 728
 729            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 730                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
 731            } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 732                notify = false;
 733            }
 734
 735            if (query == null) {
 736                extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 737                mXmppConnectionService.updateConversationUi();
 738            }
 739
 740            if (mXmppConnectionService.confirmMessages()
 741                    && message.getStatus() == Message.STATUS_RECEIVED
 742                    && (message.trusted() || message.isPrivateMessage())
 743                    && remoteMsgId != null
 744                    && !selfAddressed
 745                    && !isTypeGroupChat) {
 746                processMessageReceipts(account, packet, remoteMsgId, query);
 747            }
 748
 749            mXmppConnectionService.databaseBackend.createMessage(message);
 750            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
 751            if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
 752                if (message.getOob() != null && message.getOob().getScheme().equalsIgnoreCase("cid")) {
 753                    try {
 754                        BobTransfer transfer = new BobTransfer(message, mXmppConnectionService);
 755                        message.setTransferable(transfer);
 756                        transfer.start();
 757                    } catch (URISyntaxException e) {
 758                        Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
 759                    }
 760                } else {
 761                    manager.createNewDownloadConnection(message);
 762                }
 763            } else if (notify) {
 764                if (query != null && query.isCatchup()) {
 765                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
 766                } else {
 767                    mXmppConnectionService.getNotificationService().push(message);
 768                }
 769            }
 770        } else if (!packet.hasChild("body")) { //no body
 771
 772            final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
 773            if (axolotlEncrypted != null) {
 774                Jid origin;
 775                if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 776                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 777                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 778                    if (origin == null) {
 779                        Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
 780                        return;
 781                    }
 782                } else if (isTypeGroupChat) {
 783                    return;
 784                } else {
 785                    origin = from;
 786                }
 787                try {
 788                    final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
 789                    account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
 790                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
 791                } catch (Exception e) {
 792                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
 793                    return;
 794                }
 795            }
 796
 797            if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 798                mXmppConnectionService.updateConversationUi();
 799            }
 800
 801            if (isTypeGroupChat) {
 802                if (packet.hasChild("subject")) { //TODO usually we would want to check for lack of body; however some servers do set a body :(
 803                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 804                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
 805                        final LocalizedContent subject = packet.findInternationalizedChildContentInDefaultNamespace("subject");
 806                        if (subject != null && conversation.getMucOptions().setSubject(subject.content)) {
 807                            mXmppConnectionService.updateConversation(conversation);
 808                        }
 809                        mXmppConnectionService.updateConversationUi();
 810                        return;
 811                    }
 812                }
 813            }
 814            if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
 815                for (Element child : mucUserElement.getChildren()) {
 816                    if ("status".equals(child.getName())) {
 817                        try {
 818                            int code = Integer.parseInt(child.getAttribute("code"));
 819                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
 820                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
 821                                break;
 822                            }
 823                        } catch (Exception e) {
 824                            //ignored
 825                        }
 826                    } else if ("item".equals(child.getName())) {
 827                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
 828                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
 829                                + user.getRealJid() + " to " + user.getAffiliation() + " in "
 830                                + conversation.getJid().asBareJid());
 831                        if (!user.realJidMatchesAccount()) {
 832                            boolean isNew = conversation.getMucOptions().updateUser(user);
 833                            mXmppConnectionService.getAvatarService().clear(conversation);
 834                            mXmppConnectionService.updateMucRosterUi();
 835                            mXmppConnectionService.updateConversationUi();
 836                            Contact contact = user.getContact();
 837                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
 838                                Jid jid = user.getRealJid();
 839                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
 840                                if (cryptoTargets.remove(user.getRealJid())) {
 841                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
 842                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
 843                                    mXmppConnectionService.updateConversation(conversation);
 844                                }
 845                            } else if (isNew
 846                                    && user.getRealJid() != null
 847                                    && conversation.getMucOptions().isPrivateAndNonAnonymous()
 848                                    && (contact == null || !contact.mutualPresenceSubscription())
 849                                    && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
 850                                account.getAxolotlService().fetchDeviceIds(user.getRealJid());
 851                            }
 852                        }
 853                    }
 854                }
 855            }
 856            if (!isTypeGroupChat) {
 857                for (Element child : packet.getChildren()) {
 858                    if (Namespace.JINGLE_MESSAGE.equals(child.getNamespace()) && JINGLE_MESSAGE_ELEMENT_NAMES.contains(child.getName())) {
 859                        final String action = child.getName();
 860                        final String sessionId = child.getAttribute("id");
 861                        if (sessionId == null) {
 862                            break;
 863                        }
 864                        if (query == null) {
 865                            if (serverMsgId == null) {
 866                                serverMsgId = extractStanzaId(account, packet);
 867                            }
 868                            mXmppConnectionService.getJingleConnectionManager().deliverMessage(account, packet.getTo(), packet.getFrom(), child, remoteMsgId, serverMsgId, timestamp);
 869                            if (!account.getJid().asBareJid().equals(from.asBareJid()) && remoteMsgId != null) {
 870                                processMessageReceipts(account, packet, remoteMsgId, query);
 871                            }
 872                        } else if (query.isCatchup()) {
 873                            if ("propose".equals(action)) {
 874                                final Element description = child.findChild("description");
 875                                final String namespace = description == null ? null : description.getNamespace();
 876                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 877                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 878                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 879                                    if (preExistingMessage != null) {
 880                                        preExistingMessage.setServerMsgId(serverMsgId);
 881                                        mXmppConnectionService.updateMessage(preExistingMessage);
 882                                        break;
 883                                    }
 884                                    final Message message = new Message(
 885                                            c,
 886                                            status,
 887                                            Message.TYPE_RTP_SESSION,
 888                                            sessionId
 889                                    );
 890                                    message.setServerMsgId(serverMsgId);
 891                                    message.setTime(timestamp);
 892                                    message.setBody(new RtpSessionStatus(false, 0).toString());
 893                                    c.add(message);
 894                                    mXmppConnectionService.databaseBackend.createMessage(message);
 895                                }
 896                            } else if ("proceed".equals(action)) {
 897                                //status needs to be flipped to find the original propose
 898                                final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 899                                final int s = packet.fromAccount(account) ? Message.STATUS_RECEIVED : Message.STATUS_SEND;
 900                                final Message message = c.findRtpSession(sessionId, s);
 901                                if (message != null) {
 902                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 903                                    if (serverMsgId != null) {
 904                                        message.setServerMsgId(serverMsgId);
 905                                    }
 906                                    message.setTime(timestamp);
 907                                    mXmppConnectionService.updateMessage(message, true);
 908                                } else {
 909                                    Log.d(Config.LOGTAG, "unable to find original rtp session message for received propose");
 910                                }
 911
 912                            }
 913                        } else {
 914                            //MAM reloads (non catchups
 915                            if ("propose".equals(action)) {
 916                                final Element description = child.findChild("description");
 917                                final String namespace = description == null ? null : description.getNamespace();
 918                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 919                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 920                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 921                                    if (preExistingMessage != null) {
 922                                        preExistingMessage.setServerMsgId(serverMsgId);
 923                                        mXmppConnectionService.updateMessage(preExistingMessage);
 924                                        break;
 925                                    }
 926                                    final Message message = new Message(
 927                                            c,
 928                                            status,
 929                                            Message.TYPE_RTP_SESSION,
 930                                            sessionId
 931                                    );
 932                                    message.setServerMsgId(serverMsgId);
 933                                    message.setTime(timestamp);
 934                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 935                                    if (query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 936                                        c.prepend(query.getActualInThisQuery(), message);
 937                                    } else {
 938                                        c.add(message);
 939                                    }
 940                                    query.incrementActualMessageCount();
 941                                    mXmppConnectionService.databaseBackend.createMessage(message);
 942                                }
 943                            }
 944                        }
 945                        break;
 946                    }
 947                }
 948            }
 949        }
 950
 951        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
 952        if (received == null) {
 953            received = packet.findChild("received", "urn:xmpp:receipts");
 954        }
 955        if (received != null) {
 956            String id = received.getAttribute("id");
 957            if (packet.fromAccount(account)) {
 958                if (query != null && id != null && packet.getTo() != null) {
 959                    query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
 960                }
 961            } else if (id != null) {
 962                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 963                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 964                    mXmppConnectionService.getJingleConnectionManager()
 965                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.DISCOVERED);
 966                } else {
 967                    mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_RECEIVED);
 968                }
 969            }
 970        }
 971        Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
 972        if (displayed != null) {
 973            final String id = displayed.getAttribute("id");
 974            final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
 975            if (packet.fromAccount(account) && !selfAddressed) {
 976                dismissNotification(account, counterpart, query, id);
 977                if (query == null) {
 978                    activateGracePeriod(account);
 979                }
 980            } else if (isTypeGroupChat) {
 981                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
 982                final Message message;
 983                if (conversation != null && id != null) {
 984                    if (sender != null) {
 985                        message = conversation.findMessageWithRemoteId(id, sender);
 986                    } else {
 987                        message = conversation.findMessageWithServerMsgId(id);
 988                    }
 989                } else {
 990                    message = null;
 991                }
 992                if (message != null) {
 993                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 994                    final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
 995                    final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
 996                    if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
 997                        if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
 998                            mXmppConnectionService.markRead(conversation);
 999                        }
1000                    } else if (!counterpart.isBareJid() && trueJid != null) {
1001                        final ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
1002                        if (message.addReadByMarker(readByMarker)) {
1003                            mXmppConnectionService.updateMessage(message, false);
1004                        }
1005                    }
1006                }
1007            } else {
1008                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
1009                Message message = displayedMessage == null ? null : displayedMessage.prev();
1010                while (message != null
1011                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
1012                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
1013                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
1014                    message = message.prev();
1015                }
1016                if (displayedMessage != null && selfAddressed) {
1017                    dismissNotification(account, counterpart, query, id);
1018                }
1019            }
1020        }
1021
1022        final Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
1023        if (event != null && InvalidJid.hasValidFrom(original) && original.getFrom().isBareJid()) {
1024            if (event.hasChild("items")) {
1025                parseEvent(event, original.getFrom(), account);
1026            } else if (event.hasChild("delete")) {
1027                parseDeleteEvent(event, original.getFrom(), account);
1028            } else if (event.hasChild("purge")) {
1029                parsePurgeEvent(event, original.getFrom(), account);
1030            }
1031        }
1032
1033        final String nick = packet.findChildContent("nick", Namespace.NICK);
1034        if (nick != null && InvalidJid.hasValidFrom(original)) {
1035            if (mXmppConnectionService.isMuc(account, from)) {
1036                return;
1037            }
1038            final Contact contact = account.getRoster().getContact(from);
1039            if (contact.setPresenceName(nick)) {
1040                mXmppConnectionService.syncRoster(account);
1041                mXmppConnectionService.getAvatarService().clear(contact);
1042            }
1043        }
1044    }
1045
1046    private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query, final String id) {
1047        final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1048        if (conversation != null && (query == null || query.isCatchup())) {
1049            final String displayableId = conversation.findMostRecentRemoteDisplayableId();
1050            if (displayableId != null && displayableId.equals(id)) {
1051                mXmppConnectionService.markRead(conversation);
1052            } else {
1053                Log.w(Config.LOGTAG, account.getJid().asBareJid() + ": received dismissing display marker that did not match our last id in that conversation");
1054            }
1055        }
1056    }
1057
1058    private void processMessageReceipts(final Account account, final MessagePacket packet, final String remoteMsgId, MessageArchiveService.Query query) {
1059        final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
1060        final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
1061        if (query == null) {
1062            final ArrayList<String> receiptsNamespaces = new ArrayList<>();
1063            if (markable) {
1064                receiptsNamespaces.add("urn:xmpp:chat-markers:0");
1065            }
1066            if (request) {
1067                receiptsNamespaces.add("urn:xmpp:receipts");
1068            }
1069            if (receiptsNamespaces.size() > 0) {
1070                final MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
1071                        packet.getFrom(),
1072                        remoteMsgId,
1073                        receiptsNamespaces,
1074                        packet.getType());
1075                mXmppConnectionService.sendMessagePacket(account, receipt);
1076            }
1077        } else if (query.isCatchup()) {
1078            if (request) {
1079                query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), remoteMsgId));
1080            }
1081        }
1082    }
1083
1084    private void activateGracePeriod(Account account) {
1085        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
1086        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
1087        account.activateGracePeriod(duration);
1088    }
1089
1090    private class Invite {
1091        final Jid jid;
1092        final String password;
1093        final boolean direct;
1094        final Jid inviter;
1095
1096        Invite(Jid jid, String password, boolean direct, Jid inviter) {
1097            this.jid = jid;
1098            this.password = password;
1099            this.direct = direct;
1100            this.inviter = inviter;
1101        }
1102
1103        public boolean execute(Account account) {
1104            if (jid != null) {
1105                Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
1106                if (conversation.getMucOptions().online()) {
1107                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received invite to " + jid + " but muc is considered to be online");
1108                    mXmppConnectionService.mucSelfPingAndRejoin(conversation);
1109                } else {
1110                    conversation.getMucOptions().setPassword(password);
1111                    mXmppConnectionService.databaseBackend.updateConversation(conversation);
1112                    final Contact contact = inviter != null ? account.getRoster().getContactFromContactList(inviter) : null;
1113                    mXmppConnectionService.joinMuc(conversation, contact != null && contact.mutualPresenceSubscription());
1114                    mXmppConnectionService.updateConversationUi();
1115                }
1116                return true;
1117            }
1118            return false;
1119        }
1120    }
1121}