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 Element mucUserElement = packet.findChild("x", Namespace.MUC_USER);
 409        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
 410        final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
 411        final Element oob = packet.findChild("x", Namespace.OOB);
 412        final String oobUrl = oob != null ? oob.findChildContent("url") : null;
 413        String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
 414        if (replacementId == null) {
 415            Element fasten = packet.findChild("apply-to", "urn:xmpp:fasten:0");
 416            if (fasten != null && (fasten.findChild("retract", "urn:xmpp:message-retract:0") != null || fasten.findChild("urn:xmpp:message-moderate:0") != null)) {
 417                replacementId = fasten.getAttribute("id");
 418                packet.setBody("");
 419            }
 420        }
 421        final LocalizedContent body = packet.getBody();
 422
 423        final Element axolotlEncrypted = packet.findChildEnsureSingle(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
 424        int status;
 425        final Jid counterpart;
 426        final Jid to = packet.getTo();
 427        final Jid from = packet.getFrom();
 428        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
 429        final String remoteMsgId;
 430        if (originId != null && originId.getAttribute("id") != null) {
 431            remoteMsgId = originId.getAttribute("id");
 432        } else {
 433            remoteMsgId = packet.getId();
 434        }
 435        boolean notify = false;
 436
 437        Element html = original.findChild("html", "http://jabber.org/protocol/xhtml-im");
 438        if (html != null && html.findChild("body", "http://www.w3.org/1999/xhtml") == null) {
 439            html = null;
 440        }
 441
 442        if (from == null || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
 443            Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
 444            return;
 445        }
 446
 447        boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
 448        if (query != null && !query.muc() && isTypeGroupChat) {
 449            Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": received groupchat (" + from + ") message on regular MAM request. skipping");
 450            return;
 451        }
 452        boolean isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
 453        boolean selfAddressed;
 454        if (packet.fromAccount(account)) {
 455            status = Message.STATUS_SEND;
 456            selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
 457            if (selfAddressed) {
 458                counterpart = from;
 459            } else {
 460                counterpart = to != null ? to : account.getJid();
 461            }
 462        } else {
 463            status = Message.STATUS_RECEIVED;
 464            counterpart = from;
 465            selfAddressed = false;
 466        }
 467
 468        final Invite invite = extractInvite(packet);
 469        if (invite != null) {
 470            if (isTypeGroupChat) {
 471                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring invite to " + invite.jid + " because type=groupchat");
 472            } else if (invite.direct && (mucUserElement != null || invite.inviter == null || mXmppConnectionService.isMuc(account, invite.inviter))) {
 473                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring direct invite to " + invite.jid + " because it was received in MUC");
 474            } else {
 475                invite.execute(account);
 476                return;
 477            }
 478        }
 479
 480        if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null || html != null) && !isMucStatusMessage) {
 481            final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain().toEscapedString());
 482            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 483            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
 484
 485            if (serverMsgId == null) {
 486                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
 487            }
 488
 489
 490            if (selfAddressed) {
 491                if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
 492                    return;
 493                }
 494                status = Message.STATUS_RECEIVED;
 495                if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId, counterpart) != null) {
 496                    return;
 497                }
 498            }
 499
 500            if (isTypeGroupChat) {
 501                if (conversation.getMucOptions().isSelf(counterpart)) {
 502                    status = Message.STATUS_SEND_RECEIVED;
 503                    isCarbon = true; //not really carbon but received from another resource
 504                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId, body)) {
 505                        return;
 506                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
 507                        if (body != null) {
 508                            Message message = conversation.findSentMessageWithBody(body.content);
 509                            if (message != null) {
 510                                mXmppConnectionService.markMessage(message, status);
 511                                return;
 512                            }
 513                        }
 514                    }
 515                } else {
 516                    status = Message.STATUS_RECEIVED;
 517                }
 518            }
 519            final Message message;
 520            if (pgpEncrypted != null && Config.supportOpenPgp()) {
 521                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
 522            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
 523                Jid origin;
 524                Set<Jid> fallbacksBySourceId = Collections.emptySet();
 525                if (conversationMultiMode) {
 526                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 527                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 528                    if (origin == null) {
 529                        try {
 530                            fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
 531                        } catch (IllegalArgumentException e) {
 532                            //ignoring
 533                        }
 534                    }
 535                    if (origin == null && fallbacksBySourceId.size() == 0) {
 536                        Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
 537                        return;
 538                    }
 539                } else {
 540                    fallbacksBySourceId = Collections.emptySet();
 541                    origin = from;
 542                }
 543
 544                final boolean liveMessage = query == null && !isTypeGroupChat && mucUserElement == null;
 545                final boolean checkedForDuplicates = liveMessage || (serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId));
 546
 547                if (origin != null) {
 548                    message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, checkedForDuplicates, query != null);
 549                } else {
 550                    Message trial = null;
 551                    for (Jid fallback : fallbacksBySourceId) {
 552                        trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, checkedForDuplicates && fallbacksBySourceId.size() == 1, query != null);
 553                        if (trial != null) {
 554                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
 555                            origin = fallback;
 556                            break;
 557                        }
 558                    }
 559                    message = trial;
 560                }
 561                if (message == null) {
 562                    if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 563                        mXmppConnectionService.updateConversationUi();
 564                    }
 565                    if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
 566                        Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
 567                        if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
 568                            previouslySent.setServerMsgId(serverMsgId);
 569                            mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
 570                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
 571                        }
 572                    }
 573                    return;
 574                }
 575                if (conversationMultiMode) {
 576                    message.setTrueCounterpart(origin);
 577                }
 578            } else if (body == null && oobUrl != null) {
 579                message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
 580                message.setOob(oobUrl);
 581                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 582                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 583                }
 584            } else {
 585                message = new Message(conversation, body == null ? "HTML-only message" : body.content, Message.ENCRYPTION_NONE, status);
 586                if (body != null && body.count > 1) {
 587                    message.setBodyLanguage(body.language);
 588                }
 589            }
 590
 591            if (html != null) message.addPayload(html);
 592            message.setSubject(original.findChildContent("subject"));
 593            message.setCounterpart(counterpart);
 594            message.setRemoteMsgId(remoteMsgId);
 595            message.setServerMsgId(serverMsgId);
 596            message.setCarbon(isCarbon);
 597            message.setTime(timestamp);
 598            if (oobUrl != null) {
 599                message.setOob(oobUrl);
 600                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 601                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 602                }
 603            }
 604            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
 605            for (Element el : packet.getChildren()) {
 606                if (el.getName().equals("query") && el.getNamespace().equals("http://jabber.org/protocol/disco#items") && el.getAttribute("node").equals("http://jabber.org/protocol/commands")) {
 607                    message.addPayload(el);
 608                }
 609            }
 610            if (conversationMultiMode) {
 611                message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
 612                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 613                Jid trueCounterpart;
 614                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 615                    trueCounterpart = message.getTrueCounterpart();
 616                } else if (query != null && query.safeToExtractTrueCounterpart()) {
 617                    trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
 618                } else {
 619                    trueCounterpart = fallback;
 620                }
 621                if (trueCounterpart != null && isTypeGroupChat) {
 622                    if (trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
 623                        status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
 624                    } else {
 625                        status = Message.STATUS_RECEIVED;
 626                        message.setCarbon(false);
 627                    }
 628                }
 629                message.setStatus(status);
 630                message.setTrueCounterpart(trueCounterpart);
 631                if (!isTypeGroupChat) {
 632                    message.setType(Message.TYPE_PRIVATE);
 633                }
 634            } else {
 635                updateLastseen(account, from);
 636            }
 637
 638            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
 639                final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
 640                        counterpart,
 641                        message.getStatus() == Message.STATUS_RECEIVED,
 642                        message.isCarbon());
 643                if (replacedMessage != null) {
 644                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
 645                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
 646                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
 647                            && message.getTrueCounterpart() != null
 648                            && replacedMessage.getTrueCounterpart().asBareJid().equals(message.getTrueCounterpart().asBareJid());
 649                    final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
 650                    final boolean duplicate = conversation.hasDuplicateMessage(message);
 651                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches) && !duplicate) {
 652                        Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
 653                        synchronized (replacedMessage) {
 654                            final String uuid = replacedMessage.getUuid();
 655                            replacedMessage.setUuid(UUID.randomUUID().toString());
 656                            replacedMessage.setBody(message.getBody());
 657                            replacedMessage.putEdited(replacedMessage.getRemoteMsgId(), replacedMessage.getServerMsgId());
 658                            replacedMessage.setRemoteMsgId(remoteMsgId);
 659                            if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
 660                                replacedMessage.setServerMsgId(message.getServerMsgId());
 661                            }
 662                            replacedMessage.setEncryption(message.getEncryption());
 663                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
 664                                replacedMessage.markUnread();
 665                            }
 666                            extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 667                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
 668                            if (mXmppConnectionService.confirmMessages()
 669                                    && replacedMessage.getStatus() == Message.STATUS_RECEIVED
 670                                    && (replacedMessage.trusted() || replacedMessage.isPrivateMessage()) //TODO do we really want to send receipts for all PMs?
 671                                    && remoteMsgId != null
 672                                    && !selfAddressed
 673                                    && !isTypeGroupChat) {
 674                                processMessageReceipts(account, packet, remoteMsgId, query);
 675                            }
 676                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
 677                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
 678                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
 679                            }
 680                        }
 681                        mXmppConnectionService.getNotificationService().updateNotification();
 682                        return;
 683                    } else {
 684                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
 685                    }
 686                }
 687            }
 688
 689            long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
 690            if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
 691                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
 692                return;
 693            }
 694
 695            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
 696                    || message.isPrivateMessage()
 697                    || message.getServerMsgId() != null
 698                    || (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
 699            if (checkForDuplicates) {
 700                final Message duplicate = conversation.findDuplicateMessage(message);
 701                if (duplicate != null) {
 702                    final boolean serverMsgIdUpdated;
 703                    if (duplicate.getStatus() != Message.STATUS_RECEIVED
 704                            && duplicate.getUuid().equals(message.getRemoteMsgId())
 705                            && duplicate.getServerMsgId() == null
 706                            && message.getServerMsgId() != null) {
 707                        duplicate.setServerMsgId(message.getServerMsgId());
 708                        if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
 709                            serverMsgIdUpdated = true;
 710                        } else {
 711                            serverMsgIdUpdated = false;
 712                            Log.e(Config.LOGTAG, "failed to update message");
 713                        }
 714                    } else {
 715                        serverMsgIdUpdated = false;
 716                    }
 717                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
 718                    return;
 719                }
 720            }
 721
 722            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 723                conversation.prepend(query.getActualInThisQuery(), message);
 724            } else {
 725                conversation.add(message);
 726            }
 727            if (query != null) {
 728                query.incrementActualMessageCount();
 729            }
 730
 731            if (query == null || query.isCatchup()) { //either no mam or catchup
 732                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
 733                    mXmppConnectionService.markRead(conversation);
 734                    if (query == null) {
 735                        activateGracePeriod(account);
 736                    }
 737                } else {
 738                    message.markUnread();
 739                    notify = true;
 740                }
 741            }
 742
 743            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 744                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
 745            } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 746                notify = false;
 747            }
 748
 749            if (query == null) {
 750                extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 751                mXmppConnectionService.updateConversationUi();
 752            }
 753
 754            if (mXmppConnectionService.confirmMessages()
 755                    && message.getStatus() == Message.STATUS_RECEIVED
 756                    && (message.trusted() || message.isPrivateMessage())
 757                    && remoteMsgId != null
 758                    && !selfAddressed
 759                    && !isTypeGroupChat) {
 760                processMessageReceipts(account, packet, remoteMsgId, query);
 761            }
 762
 763            mXmppConnectionService.databaseBackend.createMessage(message);
 764            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
 765            if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
 766                if (message.getOob() != null && message.getOob().getScheme().equalsIgnoreCase("cid")) {
 767                    try {
 768                        BobTransfer transfer = new BobTransfer.ForMessage(message, mXmppConnectionService);
 769                        message.setTransferable(transfer);
 770                        transfer.start();
 771                    } catch (URISyntaxException e) {
 772                        Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
 773                    }
 774                } else {
 775                    manager.createNewDownloadConnection(message);
 776                }
 777            } else if (notify) {
 778                if (query != null && query.isCatchup()) {
 779                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
 780                } else {
 781                    mXmppConnectionService.getNotificationService().push(message);
 782                }
 783            }
 784        } else if (!packet.hasChild("body")) { //no body
 785
 786            final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
 787            if (axolotlEncrypted != null) {
 788                Jid origin;
 789                if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 790                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 791                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 792                    if (origin == null) {
 793                        Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
 794                        return;
 795                    }
 796                } else if (isTypeGroupChat) {
 797                    return;
 798                } else {
 799                    origin = from;
 800                }
 801                try {
 802                    final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
 803                    account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
 804                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
 805                } catch (Exception e) {
 806                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
 807                    return;
 808                }
 809            }
 810
 811            if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 812                mXmppConnectionService.updateConversationUi();
 813            }
 814
 815            if (isTypeGroupChat) {
 816                if (packet.hasChild("subject")) { //TODO usually we would want to check for lack of body; however some servers do set a body :(
 817                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 818                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
 819                        final LocalizedContent subject = packet.findInternationalizedChildContentInDefaultNamespace("subject");
 820                        if (subject != null && conversation.getMucOptions().setSubject(subject.content)) {
 821                            mXmppConnectionService.updateConversation(conversation);
 822                        }
 823                        mXmppConnectionService.updateConversationUi();
 824                        return;
 825                    }
 826                }
 827            }
 828            if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
 829                for (Element child : mucUserElement.getChildren()) {
 830                    if ("status".equals(child.getName())) {
 831                        try {
 832                            int code = Integer.parseInt(child.getAttribute("code"));
 833                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
 834                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
 835                                break;
 836                            }
 837                        } catch (Exception e) {
 838                            //ignored
 839                        }
 840                    } else if ("item".equals(child.getName())) {
 841                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
 842                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
 843                                + user.getRealJid() + " to " + user.getAffiliation() + " in "
 844                                + conversation.getJid().asBareJid());
 845                        if (!user.realJidMatchesAccount()) {
 846                            boolean isNew = conversation.getMucOptions().updateUser(user);
 847                            mXmppConnectionService.getAvatarService().clear(conversation);
 848                            mXmppConnectionService.updateMucRosterUi();
 849                            mXmppConnectionService.updateConversationUi();
 850                            Contact contact = user.getContact();
 851                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
 852                                Jid jid = user.getRealJid();
 853                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
 854                                if (cryptoTargets.remove(user.getRealJid())) {
 855                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
 856                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
 857                                    mXmppConnectionService.updateConversation(conversation);
 858                                }
 859                            } else if (isNew
 860                                    && user.getRealJid() != null
 861                                    && conversation.getMucOptions().isPrivateAndNonAnonymous()
 862                                    && (contact == null || !contact.mutualPresenceSubscription())
 863                                    && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
 864                                account.getAxolotlService().fetchDeviceIds(user.getRealJid());
 865                            }
 866                        }
 867                    }
 868                }
 869            }
 870            if (!isTypeGroupChat) {
 871                for (Element child : packet.getChildren()) {
 872                    if (Namespace.JINGLE_MESSAGE.equals(child.getNamespace()) && JINGLE_MESSAGE_ELEMENT_NAMES.contains(child.getName())) {
 873                        final String action = child.getName();
 874                        final String sessionId = child.getAttribute("id");
 875                        if (sessionId == null) {
 876                            break;
 877                        }
 878                        if (query == null) {
 879                            if (serverMsgId == null) {
 880                                serverMsgId = extractStanzaId(account, packet);
 881                            }
 882                            mXmppConnectionService.getJingleConnectionManager().deliverMessage(account, packet.getTo(), packet.getFrom(), child, remoteMsgId, serverMsgId, timestamp);
 883                            if (!account.getJid().asBareJid().equals(from.asBareJid()) && remoteMsgId != null) {
 884                                processMessageReceipts(account, packet, remoteMsgId, query);
 885                            }
 886                        } else if (query.isCatchup()) {
 887                            if ("propose".equals(action)) {
 888                                final Element description = child.findChild("description");
 889                                final String namespace = description == null ? null : description.getNamespace();
 890                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 891                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 892                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 893                                    if (preExistingMessage != null) {
 894                                        preExistingMessage.setServerMsgId(serverMsgId);
 895                                        mXmppConnectionService.updateMessage(preExistingMessage);
 896                                        break;
 897                                    }
 898                                    final Message message = new Message(
 899                                            c,
 900                                            status,
 901                                            Message.TYPE_RTP_SESSION,
 902                                            sessionId
 903                                    );
 904                                    message.setServerMsgId(serverMsgId);
 905                                    message.setTime(timestamp);
 906                                    message.setBody(new RtpSessionStatus(false, 0).toString());
 907                                    c.add(message);
 908                                    mXmppConnectionService.databaseBackend.createMessage(message);
 909                                }
 910                            } else if ("proceed".equals(action)) {
 911                                //status needs to be flipped to find the original propose
 912                                final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 913                                final int s = packet.fromAccount(account) ? Message.STATUS_RECEIVED : Message.STATUS_SEND;
 914                                final Message message = c.findRtpSession(sessionId, s);
 915                                if (message != null) {
 916                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 917                                    if (serverMsgId != null) {
 918                                        message.setServerMsgId(serverMsgId);
 919                                    }
 920                                    message.setTime(timestamp);
 921                                    mXmppConnectionService.updateMessage(message, true);
 922                                } else {
 923                                    Log.d(Config.LOGTAG, "unable to find original rtp session message for received propose");
 924                                }
 925
 926                            }
 927                        } else {
 928                            //MAM reloads (non catchups
 929                            if ("propose".equals(action)) {
 930                                final Element description = child.findChild("description");
 931                                final String namespace = description == null ? null : description.getNamespace();
 932                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 933                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 934                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 935                                    if (preExistingMessage != null) {
 936                                        preExistingMessage.setServerMsgId(serverMsgId);
 937                                        mXmppConnectionService.updateMessage(preExistingMessage);
 938                                        break;
 939                                    }
 940                                    final Message message = new Message(
 941                                            c,
 942                                            status,
 943                                            Message.TYPE_RTP_SESSION,
 944                                            sessionId
 945                                    );
 946                                    message.setServerMsgId(serverMsgId);
 947                                    message.setTime(timestamp);
 948                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 949                                    if (query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 950                                        c.prepend(query.getActualInThisQuery(), message);
 951                                    } else {
 952                                        c.add(message);
 953                                    }
 954                                    query.incrementActualMessageCount();
 955                                    mXmppConnectionService.databaseBackend.createMessage(message);
 956                                }
 957                            }
 958                        }
 959                        break;
 960                    }
 961                }
 962            }
 963        }
 964
 965        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
 966        if (received == null) {
 967            received = packet.findChild("received", "urn:xmpp:receipts");
 968        }
 969        if (received != null) {
 970            String id = received.getAttribute("id");
 971            if (packet.fromAccount(account)) {
 972                if (query != null && id != null && packet.getTo() != null) {
 973                    query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
 974                }
 975            } else if (id != null) {
 976                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 977                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 978                    mXmppConnectionService.getJingleConnectionManager()
 979                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.DISCOVERED);
 980                } else {
 981                    mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_RECEIVED);
 982                }
 983            }
 984        }
 985        Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
 986        if (displayed != null) {
 987            final String id = displayed.getAttribute("id");
 988            final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
 989            if (packet.fromAccount(account) && !selfAddressed) {
 990                dismissNotification(account, counterpart, query, id);
 991                if (query == null) {
 992                    activateGracePeriod(account);
 993                }
 994            } else if (isTypeGroupChat) {
 995                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
 996                final Message message;
 997                if (conversation != null && id != null) {
 998                    if (sender != null) {
 999                        message = conversation.findMessageWithRemoteId(id, sender);
1000                    } else {
1001                        message = conversation.findMessageWithServerMsgId(id);
1002                    }
1003                } else {
1004                    message = null;
1005                }
1006                if (message != null) {
1007                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
1008                    final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
1009                    final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
1010                    if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
1011                        if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
1012                            mXmppConnectionService.markRead(conversation);
1013                        }
1014                    } else if (!counterpart.isBareJid() && trueJid != null) {
1015                        final ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
1016                        if (message.addReadByMarker(readByMarker)) {
1017                            mXmppConnectionService.updateMessage(message, false);
1018                        }
1019                    }
1020                }
1021            } else {
1022                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
1023                Message message = displayedMessage == null ? null : displayedMessage.prev();
1024                while (message != null
1025                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
1026                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
1027                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
1028                    message = message.prev();
1029                }
1030                if (displayedMessage != null && selfAddressed) {
1031                    dismissNotification(account, counterpart, query, id);
1032                }
1033            }
1034        }
1035
1036        final Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
1037        if (event != null && InvalidJid.hasValidFrom(original) && original.getFrom().isBareJid()) {
1038            if (event.hasChild("items")) {
1039                parseEvent(event, original.getFrom(), account);
1040            } else if (event.hasChild("delete")) {
1041                parseDeleteEvent(event, original.getFrom(), account);
1042            } else if (event.hasChild("purge")) {
1043                parsePurgeEvent(event, original.getFrom(), account);
1044            }
1045        }
1046
1047        final String nick = packet.findChildContent("nick", Namespace.NICK);
1048        if (nick != null && InvalidJid.hasValidFrom(original)) {
1049            if (mXmppConnectionService.isMuc(account, from)) {
1050                return;
1051            }
1052            final Contact contact = account.getRoster().getContact(from);
1053            if (contact.setPresenceName(nick)) {
1054                mXmppConnectionService.syncRoster(account);
1055                mXmppConnectionService.getAvatarService().clear(contact);
1056            }
1057        }
1058    }
1059
1060    private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query, final String id) {
1061        final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1062        if (conversation != null && (query == null || query.isCatchup())) {
1063            final String displayableId = conversation.findMostRecentRemoteDisplayableId();
1064            if (displayableId != null && displayableId.equals(id)) {
1065                mXmppConnectionService.markRead(conversation);
1066            } else {
1067                Log.w(Config.LOGTAG, account.getJid().asBareJid() + ": received dismissing display marker that did not match our last id in that conversation");
1068            }
1069        }
1070    }
1071
1072    private void processMessageReceipts(final Account account, final MessagePacket packet, final String remoteMsgId, MessageArchiveService.Query query) {
1073        final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
1074        final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
1075        if (query == null) {
1076            final ArrayList<String> receiptsNamespaces = new ArrayList<>();
1077            if (markable) {
1078                receiptsNamespaces.add("urn:xmpp:chat-markers:0");
1079            }
1080            if (request) {
1081                receiptsNamespaces.add("urn:xmpp:receipts");
1082            }
1083            if (receiptsNamespaces.size() > 0) {
1084                final MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
1085                        packet.getFrom(),
1086                        remoteMsgId,
1087                        receiptsNamespaces,
1088                        packet.getType());
1089                mXmppConnectionService.sendMessagePacket(account, receipt);
1090            }
1091        } else if (query.isCatchup()) {
1092            if (request) {
1093                query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), remoteMsgId));
1094            }
1095        }
1096    }
1097
1098    private void activateGracePeriod(Account account) {
1099        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
1100        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
1101        account.activateGracePeriod(duration);
1102    }
1103
1104    private class Invite {
1105        final Jid jid;
1106        final String password;
1107        final boolean direct;
1108        final Jid inviter;
1109
1110        Invite(Jid jid, String password, boolean direct, Jid inviter) {
1111            this.jid = jid;
1112            this.password = password;
1113            this.direct = direct;
1114            this.inviter = inviter;
1115        }
1116
1117        public boolean execute(Account account) {
1118            if (jid != null) {
1119                Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
1120                if (conversation.getMucOptions().online()) {
1121                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received invite to " + jid + " but muc is considered to be online");
1122                    mXmppConnectionService.mucSelfPingAndRejoin(conversation);
1123                } else {
1124                    conversation.getMucOptions().setPassword(password);
1125                    mXmppConnectionService.databaseBackend.updateConversation(conversation);
1126                    final Contact contact = inviter != null ? account.getRoster().getContactFromContactList(inviter) : null;
1127                    mXmppConnectionService.joinMuc(conversation, contact != null && contact.mutualPresenceSubscription());
1128                    mXmppConnectionService.updateConversationUi();
1129                }
1130                return true;
1131            }
1132            return false;
1133        }
1134    }
1135}