1package eu.siacs.conversations.parser;
   2
   3import android.util.Log;
   4import android.util.Pair;
   5
   6import java.text.SimpleDateFormat;
   7import java.util.ArrayList;
   8import java.util.Arrays;
   9import java.util.Collections;
  10import java.util.Date;
  11import java.util.List;
  12import java.util.Locale;
  13import java.util.Map;
  14import java.util.Set;
  15import java.util.UUID;
  16
  17import eu.siacs.conversations.Config;
  18import eu.siacs.conversations.R;
  19import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  20import eu.siacs.conversations.crypto.axolotl.BrokenSessionException;
  21import eu.siacs.conversations.crypto.axolotl.NotEncryptedForThisDeviceException;
  22import eu.siacs.conversations.crypto.axolotl.OutdatedSenderException;
  23import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  24import eu.siacs.conversations.entities.Account;
  25import eu.siacs.conversations.entities.Bookmark;
  26import eu.siacs.conversations.entities.Contact;
  27import eu.siacs.conversations.entities.Conversation;
  28import eu.siacs.conversations.entities.Conversational;
  29import eu.siacs.conversations.entities.Message;
  30import eu.siacs.conversations.entities.MucOptions;
  31import eu.siacs.conversations.entities.ReadByMarker;
  32import eu.siacs.conversations.entities.ReceiptRequest;
  33import eu.siacs.conversations.entities.RtpSessionStatus;
  34import eu.siacs.conversations.http.HttpConnectionManager;
  35import eu.siacs.conversations.services.MessageArchiveService;
  36import eu.siacs.conversations.services.QuickConversationsService;
  37import eu.siacs.conversations.services.XmppConnectionService;
  38import eu.siacs.conversations.utils.CryptoHelper;
  39import eu.siacs.conversations.xml.Element;
  40import eu.siacs.conversations.xml.LocalizedContent;
  41import eu.siacs.conversations.xml.Namespace;
  42import eu.siacs.conversations.xmpp.InvalidJid;
  43import eu.siacs.conversations.xmpp.Jid;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.chatstate.ChatState;
  46import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  47import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  48import eu.siacs.conversations.xmpp.pep.Avatar;
  49import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  50
  51public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
  52
  53    private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
  54
  55    private static final List<String> JINGLE_MESSAGE_ELEMENT_NAMES =
  56            Arrays.asList("accept", "propose", "proceed", "reject", "retract", "ringing");
  57
  58    public MessageParser(XmppConnectionService service) {
  59        super(service);
  60    }
  61
  62    private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
  63        final Jid by;
  64        final boolean safeToExtract;
  65        if (isTypeGroupChat) {
  66            by = conversation.getJid().asBareJid();
  67            safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
  68        } else {
  69            Account account = conversation.getAccount();
  70            by = account.getJid().asBareJid();
  71            safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  72        }
  73        return safeToExtract ? extractStanzaId(packet, by) : null;
  74    }
  75
  76    private static String extractStanzaId(Account account, Element packet) {
  77        final boolean safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  78        return safeToExtract ? extractStanzaId(packet, account.getJid().asBareJid()) : null;
  79    }
  80
  81    private static String extractStanzaId(Element packet, Jid by) {
  82        for (Element child : packet.getChildren()) {
  83            if (child.getName().equals("stanza-id")
  84                    && Namespace.STANZA_IDS.equals(child.getNamespace())
  85                    && by.equals(InvalidJid.getNullForInvalid(child.getAttributeAsJid("by")))) {
  86                return child.getAttribute("id");
  87            }
  88        }
  89        return null;
  90    }
  91
  92    private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
  93        final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
  94        Jid result = item == null ? null : InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
  95        return result != null ? result : fallback;
  96    }
  97
  98    private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
  99        ChatState state = ChatState.parse(packet);
 100        if (state != null && c != null) {
 101            final Account account = c.getAccount();
 102            final Jid from = packet.getFrom();
 103            if (from.asBareJid().equals(account.getJid().asBareJid())) {
 104                c.setOutgoingChatState(state);
 105                if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 106                    if (c.getContact().isSelf()) {
 107                        return false;
 108                    }
 109                    mXmppConnectionService.markRead(c);
 110                    activateGracePeriod(account);
 111                }
 112                return false;
 113            } else {
 114                if (isTypeGroupChat) {
 115                    MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 116                    if (user != null) {
 117                        return user.setChatState(state);
 118                    } else {
 119                        return false;
 120                    }
 121                } else {
 122                    return c.setIncomingChatState(state);
 123                }
 124            }
 125        }
 126        return false;
 127    }
 128
 129    private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, final boolean checkedForDuplicates, boolean postpone) {
 130        final AxolotlService service = conversation.getAccount().getAxolotlService();
 131        final XmppAxolotlMessage xmppAxolotlMessage;
 132        try {
 133            xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
 134        } catch (Exception e) {
 135            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
 136            return null;
 137        }
 138        if (xmppAxolotlMessage.hasPayload()) {
 139            final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage;
 140            try {
 141                plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
 142            } catch (BrokenSessionException e) {
 143                if (checkedForDuplicates) {
 144                    if (service.trustedOrPreviouslyResponded(from.asBareJid())) {
 145                        service.reportBrokenSessionException(e, postpone);
 146                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 147                    } else {
 148                        Log.d(Config.LOGTAG, "ignoring broken session exception because contact was not trusted");
 149                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 150                    }
 151                } else {
 152                    Log.d(Config.LOGTAG, "ignoring broken session exception because checkForDuplicates failed");
 153                    return null;
 154                }
 155            } catch (NotEncryptedForThisDeviceException e) {
 156                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE, status);
 157            } catch (OutdatedSenderException e) {
 158                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 159            }
 160            if (plaintextMessage != null) {
 161                Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
 162                finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
 163                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
 164                return finishedMessage;
 165            }
 166        } else {
 167            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": received OMEMO key transport message");
 168            service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
 169        }
 170        return null;
 171    }
 172
 173    private Invite extractInvite(final Element message) {
 174        final Element mucUser = message.findChild("x", Namespace.MUC_USER);
 175        if (mucUser != null) {
 176            final Element invite = mucUser.findChild("invite");
 177            if (invite != null) {
 178                final String password = mucUser.findChildContent("password");
 179                final Jid from = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("from"));
 180                final Jid to = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("to"));
 181                if (to != null && from == null) {
 182                    Log.d(Config.LOGTAG,"do not parse outgoing mediated invite "+message);
 183                    return null;
 184                }
 185                final Jid room = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 186                if (room == null) {
 187                    return null;
 188                }
 189                return new Invite(room, password, false, from);
 190            }
 191        }
 192        final Element conference = message.findChild("x", "jabber:x:conference");
 193        if (conference != null) {
 194            Jid from = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 195            Jid room = InvalidJid.getNullForInvalid(conference.getAttributeAsJid("jid"));
 196            if (room == null) {
 197                return null;
 198            }
 199            return new Invite(room, conference.getAttribute("password"), true, from);
 200        }
 201        return null;
 202    }
 203
 204    private void parseEvent(final Element event, final Jid from, final Account account) {
 205        final Element items = event.findChild("items");
 206        final String node = items == null ? null : items.getAttribute("node");
 207        if ("urn:xmpp:avatar:metadata".equals(node)) {
 208            Avatar avatar = Avatar.parseMetadata(items);
 209            if (avatar != null) {
 210                avatar.owner = from.asBareJid();
 211                if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
 212                    if (account.getJid().asBareJid().equals(from)) {
 213                        if (account.setAvatar(avatar.getFilename())) {
 214                            mXmppConnectionService.databaseBackend.updateAccount(account);
 215                            mXmppConnectionService.notifyAccountAvatarHasChanged(account);
 216                        }
 217                        mXmppConnectionService.getAvatarService().clear(account);
 218                        mXmppConnectionService.updateConversationUi();
 219                        mXmppConnectionService.updateAccountUi();
 220                    } else {
 221                        final Contact contact = account.getRoster().getContact(from);
 222                        contact.setAvatar(avatar);
 223                        mXmppConnectionService.syncRoster(account);
 224                        mXmppConnectionService.getAvatarService().clear(contact);
 225                        mXmppConnectionService.updateConversationUi();
 226                        mXmppConnectionService.updateRosterUi();
 227                    }
 228                } else if (mXmppConnectionService.isDataSaverDisabled()) {
 229                    mXmppConnectionService.fetchAvatar(account, avatar);
 230                }
 231            }
 232        } else if (Namespace.NICK.equals(node)) {
 233            final Element i = items.findChild("item");
 234            final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
 235            if (nick != null) {
 236                setNick(account, from, nick);
 237            }
 238        } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
 239            Element item = items.findChild("item");
 240            Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
 241            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
 242            final AxolotlService axolotlService = account.getAxolotlService();
 243            axolotlService.registerDevices(from, deviceIds);
 244        } else if (Namespace.BOOKMARKS.equals(node) && account.getJid().asBareJid().equals(from)) {
 245            if (account.getXmppConnection().getFeatures().bookmarksConversion()) {
 246                final Element i = items.findChild("item");
 247                final Element storage = i == null ? null : i.findChild("storage", Namespace.BOOKMARKS);
 248                Map<Jid, Bookmark> bookmarks = Bookmark.parseFromStorage(storage, account);
 249                mXmppConnectionService.processBookmarksInitial(account, bookmarks, true);
 250                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": processing bookmark PEP event");
 251            } else {
 252                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring bookmark PEP event because bookmark conversion was not detected");
 253            }
 254        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 255            final Element item = items.findChild("item");
 256            final Element retract = items.findChild("retract");
 257            if (item != null) {
 258                final Bookmark bookmark = Bookmark.parseFromItem(item, account);
 259                if (bookmark != null) {
 260                    account.putBookmark(bookmark);
 261                    mXmppConnectionService.processModifiedBookmark(bookmark);
 262                    mXmppConnectionService.updateConversationUi();
 263                }
 264            }
 265            if (retract != null) {
 266                final Jid id = InvalidJid.getNullForInvalid(retract.getAttributeAsJid("id"));
 267                if (id != null) {
 268                    account.removeBookmark(id);
 269                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmark for " + id);
 270                    mXmppConnectionService.processDeletedBookmark(account, id);
 271                    mXmppConnectionService.updateConversationUi();
 272                }
 273            }
 274        } else {
 275            Log.d(Config.LOGTAG, account.getJid().asBareJid() + " received pubsub notification for node=" + node);
 276        }
 277    }
 278
 279    private void parseDeleteEvent(final Element event, final Jid from, final Account account) {
 280        final Element delete = event.findChild("delete");
 281        final String node = delete == null ? null : delete.getAttribute("node");
 282        if (Namespace.NICK.equals(node)) {
 283            Log.d(Config.LOGTAG, "parsing nick delete event from " + from);
 284            setNick(account, from, null);
 285        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 286            account.setBookmarks(Collections.emptyMap());
 287            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmarks node");
 288        } else if (Namespace.AVATAR_METADATA.equals(node) && account.getJid().asBareJid().equals(from)) {
 289            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": deleted avatar metadata node");
 290        }
 291    }
 292
 293    private void parsePurgeEvent(final Element event, final Jid from, final Account account) {
 294        final Element purge = event.findChild("purge");
 295        final String node = purge == null ? null : purge.getAttribute("node");
 296        if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 297            account.setBookmarks(Collections.emptyMap());
 298            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": purged bookmarks");
 299        }
 300    }
 301
 302    private void setNick(Account account, Jid user, String nick) {
 303        if (user.asBareJid().equals(account.getJid().asBareJid())) {
 304            account.setDisplayName(nick);
 305            if (QuickConversationsService.isQuicksy()) {
 306                mXmppConnectionService.getAvatarService().clear(account);
 307            }
 308        } else {
 309            Contact contact = account.getRoster().getContact(user);
 310            if (contact.setPresenceName(nick)) {
 311                mXmppConnectionService.syncRoster(account);
 312                mXmppConnectionService.getAvatarService().clear(contact);
 313            }
 314        }
 315        mXmppConnectionService.updateConversationUi();
 316        mXmppConnectionService.updateAccountUi();
 317    }
 318
 319    private boolean handleErrorMessage(final Account account, final MessagePacket packet) {
 320        if (packet.getType() == MessagePacket.TYPE_ERROR) {
 321            if (packet.fromServer(account)) {
 322                final Pair<MessagePacket, Long> forwarded = packet.getForwardedMessagePacket("received", Namespace.CARBONS);
 323                if (forwarded != null) {
 324                    return handleErrorMessage(account, forwarded.first);
 325                }
 326            }
 327            final Jid from = packet.getFrom();
 328            final String id = packet.getId();
 329            if (from != null && id != null) {
 330                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 331                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 332                    mXmppConnectionService.getJingleConnectionManager()
 333                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.FAILED);
 334                    return true;
 335                }
 336                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX)) {
 337                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX.length());
 338                    final String message = extractErrorMessage(packet);
 339                    mXmppConnectionService.getJingleConnectionManager().failProceed(account, from, sessionId, message);
 340                    return true;
 341                }
 342                mXmppConnectionService.markMessage(account,
 343                        from.asBareJid(),
 344                        id,
 345                        Message.STATUS_SEND_FAILED,
 346                        extractErrorMessage(packet));
 347                final Element error = packet.findChild("error");
 348                final boolean pingWorthyError = error != null && (error.hasChild("not-acceptable") || error.hasChild("remote-server-timeout") || error.hasChild("remote-server-not-found"));
 349                if (pingWorthyError) {
 350                    Conversation conversation = mXmppConnectionService.find(account, from);
 351                    if (conversation != null && conversation.getMode() == Conversational.MODE_MULTI) {
 352                        if (conversation.getMucOptions().online()) {
 353                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received ping worthy error for seemingly online muc at " + from);
 354                            mXmppConnectionService.mucSelfPingAndRejoin(conversation);
 355                        }
 356                    }
 357                }
 358            }
 359            return true;
 360        }
 361        return false;
 362    }
 363
 364    @Override
 365    public void onMessagePacketReceived(Account account, MessagePacket original) {
 366        if (handleErrorMessage(account, original)) {
 367            return;
 368        }
 369        final MessagePacket packet;
 370        Long timestamp = null;
 371        boolean isCarbon = false;
 372        String serverMsgId = null;
 373        final Element fin = original.findChild("fin", MessageArchiveService.Version.MAM_0.namespace);
 374        if (fin != null) {
 375            mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
 376            return;
 377        }
 378        final Element result = MessageArchiveService.Version.findResult(original);
 379        final String queryId = result == null ? null : result.getAttribute("queryid");
 380        final MessageArchiveService.Query query = queryId == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(queryId);
 381        if (query != null && query.validFrom(original.getFrom())) {
 382            final Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", query.version.namespace);
 383            if (f == null) {
 384                return;
 385            }
 386            timestamp = f.second;
 387            packet = f.first;
 388            serverMsgId = result.getAttribute("id");
 389            query.incrementMessageCount();
 390            if (handleErrorMessage(account, packet)) {
 391                return;
 392            }
 393        } else if (query != null) {
 394            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received mam result with invalid from (" + original.getFrom() + ") or queryId (" + queryId + ")");
 395            return;
 396        } else if (original.fromServer(account)) {
 397            Pair<MessagePacket, Long> f;
 398            f = original.getForwardedMessagePacket("received", Namespace.CARBONS);
 399            f = f == null ? original.getForwardedMessagePacket("sent", Namespace.CARBONS) : f;
 400            packet = f != null ? f.first : original;
 401            if (handleErrorMessage(account, packet)) {
 402                return;
 403            }
 404            timestamp = f != null ? f.second : null;
 405            isCarbon = f != null;
 406        } else {
 407            packet = original;
 408        }
 409
 410        if (timestamp == null) {
 411            timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
 412        }
 413        final LocalizedContent body = packet.getBody();
 414        final Element mucUserElement = packet.findChild("x", Namespace.MUC_USER);
 415        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
 416        final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
 417        final Element oob = packet.findChild("x", Namespace.OOB);
 418        final String oobUrl = oob != null ? oob.findChildContent("url") : null;
 419        final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
 420        final Element axolotlEncrypted = packet.findChildEnsureSingle(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
 421        int status;
 422        final Jid counterpart;
 423        final Jid to = packet.getTo();
 424        final Jid from = packet.getFrom();
 425        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
 426        final String remoteMsgId;
 427        if (originId != null && originId.getAttribute("id") != null) {
 428            remoteMsgId = originId.getAttribute("id");
 429        } else {
 430            remoteMsgId = packet.getId();
 431        }
 432        boolean notify = false;
 433
 434        if (from == null || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
 435            Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
 436            return;
 437        }
 438
 439        boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
 440        if (query != null && !query.muc() && isTypeGroupChat) {
 441            Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": received groupchat (" + from + ") message on regular MAM request. skipping");
 442            return;
 443        }
 444        boolean isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
 445        boolean selfAddressed;
 446        if (packet.fromAccount(account)) {
 447            status = Message.STATUS_SEND;
 448            selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
 449            if (selfAddressed) {
 450                counterpart = from;
 451            } else {
 452                counterpart = to != null ? to : account.getJid();
 453            }
 454        } else {
 455            status = Message.STATUS_RECEIVED;
 456            counterpart = from;
 457            selfAddressed = false;
 458        }
 459
 460        final Invite invite = extractInvite(packet);
 461        if (invite != null) {
 462            if (invite.jid.asBareJid().equals(account.getJid().asBareJid())) {
 463                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ignore invite to "+invite.jid+" because it matches account");
 464            } else if (isTypeGroupChat) {
 465                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring invite to " + invite.jid + " because it was received as group chat");
 466            } else if (invite.direct && (mucUserElement != null || invite.inviter == null || mXmppConnectionService.isMuc(account, invite.inviter))) {
 467                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring direct invite to " + invite.jid + " because it was received in MUC");
 468            } else {
 469                invite.execute(account);
 470                return;
 471            }
 472        }
 473
 474        if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null) && !isMucStatusMessage) {
 475            final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain().toEscapedString());
 476            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 477            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
 478
 479            if (serverMsgId == null) {
 480                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
 481            }
 482
 483
 484            if (selfAddressed) {
 485                if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
 486                    return;
 487                }
 488                status = Message.STATUS_RECEIVED;
 489                if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId, counterpart) != null) {
 490                    return;
 491                }
 492            }
 493
 494            if (isTypeGroupChat) {
 495                if (conversation.getMucOptions().isSelf(counterpart)) {
 496                    status = Message.STATUS_SEND_RECEIVED;
 497                    isCarbon = true; //not really carbon but received from another resource
 498                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId, body)) {
 499                        return;
 500                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
 501                        if (body != null) {
 502                            Message message = conversation.findSentMessageWithBody(body.content);
 503                            if (message != null) {
 504                                mXmppConnectionService.markMessage(message, status);
 505                                return;
 506                            }
 507                        }
 508                    }
 509                } else {
 510                    status = Message.STATUS_RECEIVED;
 511                }
 512            }
 513            final Message message;
 514            if (pgpEncrypted != null && Config.supportOpenPgp()) {
 515                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
 516            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
 517                Jid origin;
 518                Set<Jid> fallbacksBySourceId = Collections.emptySet();
 519                if (conversationMultiMode) {
 520                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 521                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 522                    if (origin == null) {
 523                        try {
 524                            fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
 525                        } catch (IllegalArgumentException e) {
 526                            //ignoring
 527                        }
 528                    }
 529                    if (origin == null && fallbacksBySourceId.size() == 0) {
 530                        Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
 531                        return;
 532                    }
 533                } else {
 534                    fallbacksBySourceId = Collections.emptySet();
 535                    origin = from;
 536                }
 537
 538                final boolean liveMessage = query == null && !isTypeGroupChat && mucUserElement == null;
 539                final boolean checkedForDuplicates = liveMessage || (serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId));
 540
 541                if (origin != null) {
 542                    message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, checkedForDuplicates, query != null);
 543                } else {
 544                    Message trial = null;
 545                    for (Jid fallback : fallbacksBySourceId) {
 546                        trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, checkedForDuplicates && fallbacksBySourceId.size() == 1, query != null);
 547                        if (trial != null) {
 548                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
 549                            origin = fallback;
 550                            break;
 551                        }
 552                    }
 553                    message = trial;
 554                }
 555                if (message == null) {
 556                    if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 557                        mXmppConnectionService.updateConversationUi();
 558                    }
 559                    if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
 560                        Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
 561                        if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
 562                            previouslySent.setServerMsgId(serverMsgId);
 563                            mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
 564                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
 565                        }
 566                    }
 567                    return;
 568                }
 569                if (conversationMultiMode) {
 570                    message.setTrueCounterpart(origin);
 571                }
 572            } else if (body == null && oobUrl != null) {
 573                message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
 574                message.setOob(true);
 575                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 576                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 577                }
 578            } else {
 579                message = new Message(conversation, body.content, Message.ENCRYPTION_NONE, status);
 580                if (body.count > 1) {
 581                    message.setBodyLanguage(body.language);
 582                }
 583            }
 584
 585            message.setCounterpart(counterpart);
 586            message.setRemoteMsgId(remoteMsgId);
 587            message.setServerMsgId(serverMsgId);
 588            message.setCarbon(isCarbon);
 589            message.setTime(timestamp);
 590            if (body != null && body.content != null && body.content.equals(oobUrl)) {
 591                message.setOob(true);
 592                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 593                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 594                }
 595            }
 596            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
 597            if (conversationMultiMode) {
 598                message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
 599                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 600                Jid trueCounterpart;
 601                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 602                    trueCounterpart = message.getTrueCounterpart();
 603                } else if (query != null && query.safeToExtractTrueCounterpart()) {
 604                    trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
 605                } else {
 606                    trueCounterpart = fallback;
 607                }
 608                if (trueCounterpart != null && isTypeGroupChat) {
 609                    if (trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
 610                        status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
 611                    } else {
 612                        status = Message.STATUS_RECEIVED;
 613                        message.setCarbon(false);
 614                    }
 615                }
 616                message.setStatus(status);
 617                message.setTrueCounterpart(trueCounterpart);
 618                if (!isTypeGroupChat) {
 619                    message.setType(Message.TYPE_PRIVATE);
 620                }
 621            } else {
 622                updateLastseen(account, from);
 623            }
 624
 625            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
 626                final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
 627                        counterpart,
 628                        message.getStatus() == Message.STATUS_RECEIVED,
 629                        message.isCarbon());
 630                if (replacedMessage != null) {
 631                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
 632                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
 633                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
 634                            && message.getTrueCounterpart() != null
 635                            && replacedMessage.getTrueCounterpart().asBareJid().equals(message.getTrueCounterpart().asBareJid());
 636                    final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
 637                    final boolean duplicate = conversation.hasDuplicateMessage(message);
 638                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches) && !duplicate) {
 639                        Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
 640                        synchronized (replacedMessage) {
 641                            final String uuid = replacedMessage.getUuid();
 642                            replacedMessage.setUuid(UUID.randomUUID().toString());
 643                            replacedMessage.setBody(message.getBody());
 644                            replacedMessage.putEdited(replacedMessage.getRemoteMsgId(), replacedMessage.getServerMsgId());
 645                            replacedMessage.setRemoteMsgId(remoteMsgId);
 646                            if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
 647                                replacedMessage.setServerMsgId(message.getServerMsgId());
 648                            }
 649                            replacedMessage.setEncryption(message.getEncryption());
 650                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
 651                                replacedMessage.markUnread();
 652                            }
 653                            extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 654                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
 655                            if (mXmppConnectionService.confirmMessages()
 656                                    && replacedMessage.getStatus() == Message.STATUS_RECEIVED
 657                                    && (replacedMessage.trusted() || replacedMessage.isPrivateMessage()) //TODO do we really want to send receipts for all PMs?
 658                                    && remoteMsgId != null
 659                                    && !selfAddressed
 660                                    && !isTypeGroupChat) {
 661                                processMessageReceipts(account, packet, remoteMsgId, query);
 662                            }
 663                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
 664                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
 665                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
 666                            }
 667                        }
 668                        mXmppConnectionService.getNotificationService().updateNotification();
 669                        return;
 670                    } else {
 671                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
 672                    }
 673                }
 674            }
 675
 676            long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
 677            if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
 678                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
 679                return;
 680            }
 681
 682            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
 683                    || message.isPrivateMessage()
 684                    || message.getServerMsgId() != null
 685                    || (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
 686            if (checkForDuplicates) {
 687                final Message duplicate = conversation.findDuplicateMessage(message);
 688                if (duplicate != null) {
 689                    final boolean serverMsgIdUpdated;
 690                    if (duplicate.getStatus() != Message.STATUS_RECEIVED
 691                            && duplicate.getUuid().equals(message.getRemoteMsgId())
 692                            && duplicate.getServerMsgId() == null
 693                            && message.getServerMsgId() != null) {
 694                        duplicate.setServerMsgId(message.getServerMsgId());
 695                        if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
 696                            serverMsgIdUpdated = true;
 697                        } else {
 698                            serverMsgIdUpdated = false;
 699                            Log.e(Config.LOGTAG, "failed to update message");
 700                        }
 701                    } else {
 702                        serverMsgIdUpdated = false;
 703                    }
 704                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
 705                    return;
 706                }
 707            }
 708
 709            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 710                conversation.prepend(query.getActualInThisQuery(), message);
 711            } else {
 712                conversation.add(message);
 713            }
 714            if (query != null) {
 715                query.incrementActualMessageCount();
 716            }
 717
 718            if (query == null || query.isCatchup()) { //either no mam or catchup
 719                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
 720                    mXmppConnectionService.markRead(conversation);
 721                    if (query == null) {
 722                        activateGracePeriod(account);
 723                    }
 724                } else {
 725                    message.markUnread();
 726                    notify = true;
 727                }
 728            }
 729
 730            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 731                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
 732            } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 733                notify = false;
 734            }
 735
 736            if (query == null) {
 737                extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 738                mXmppConnectionService.updateConversationUi();
 739            }
 740
 741            if (mXmppConnectionService.confirmMessages()
 742                    && message.getStatus() == Message.STATUS_RECEIVED
 743                    && (message.trusted() || message.isPrivateMessage())
 744                    && remoteMsgId != null
 745                    && !selfAddressed
 746                    && !isTypeGroupChat) {
 747                processMessageReceipts(account, packet, remoteMsgId, query);
 748            }
 749
 750            mXmppConnectionService.databaseBackend.createMessage(message);
 751            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
 752            if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
 753                manager.createNewDownloadConnection(message);
 754            } else if (notify) {
 755                if (query != null && query.isCatchup()) {
 756                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
 757                } else {
 758                    mXmppConnectionService.getNotificationService().push(message);
 759                }
 760            }
 761        } else if (!packet.hasChild("body")) { //no body
 762
 763            final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
 764            if (axolotlEncrypted != null) {
 765                Jid origin;
 766                if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 767                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 768                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 769                    if (origin == null) {
 770                        Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
 771                        return;
 772                    }
 773                } else if (isTypeGroupChat) {
 774                    return;
 775                } else {
 776                    origin = from;
 777                }
 778                try {
 779                    final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
 780                    account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
 781                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
 782                } catch (Exception e) {
 783                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
 784                    return;
 785                }
 786            }
 787
 788            if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 789                mXmppConnectionService.updateConversationUi();
 790            }
 791
 792            if (isTypeGroupChat) {
 793                if (packet.hasChild("subject")) { //TODO usually we would want to check for lack of body; however some servers do set a body :(
 794                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 795                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
 796                        final LocalizedContent subject = packet.findInternationalizedChildContentInDefaultNamespace("subject");
 797                        if (subject != null && conversation.getMucOptions().setSubject(subject.content)) {
 798                            mXmppConnectionService.updateConversation(conversation);
 799                        }
 800                        mXmppConnectionService.updateConversationUi();
 801                        return;
 802                    }
 803                }
 804            }
 805            if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
 806                for (Element child : mucUserElement.getChildren()) {
 807                    if ("status".equals(child.getName())) {
 808                        try {
 809                            int code = Integer.parseInt(child.getAttribute("code"));
 810                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
 811                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
 812                                break;
 813                            }
 814                        } catch (Exception e) {
 815                            //ignored
 816                        }
 817                    } else if ("item".equals(child.getName())) {
 818                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
 819                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
 820                                + user.getRealJid() + " to " + user.getAffiliation() + " in "
 821                                + conversation.getJid().asBareJid());
 822                        if (!user.realJidMatchesAccount()) {
 823                            boolean isNew = conversation.getMucOptions().updateUser(user);
 824                            mXmppConnectionService.getAvatarService().clear(conversation);
 825                            mXmppConnectionService.updateMucRosterUi();
 826                            mXmppConnectionService.updateConversationUi();
 827                            Contact contact = user.getContact();
 828                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
 829                                Jid jid = user.getRealJid();
 830                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
 831                                if (cryptoTargets.remove(user.getRealJid())) {
 832                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
 833                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
 834                                    mXmppConnectionService.updateConversation(conversation);
 835                                }
 836                            } else if (isNew
 837                                    && user.getRealJid() != null
 838                                    && conversation.getMucOptions().isPrivateAndNonAnonymous()
 839                                    && (contact == null || !contact.mutualPresenceSubscription())
 840                                    && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
 841                                account.getAxolotlService().fetchDeviceIds(user.getRealJid());
 842                            }
 843                        }
 844                    }
 845                }
 846            }
 847            if (!isTypeGroupChat) {
 848                for (Element child : packet.getChildren()) {
 849                    if (Namespace.JINGLE_MESSAGE.equals(child.getNamespace()) && JINGLE_MESSAGE_ELEMENT_NAMES.contains(child.getName())) {
 850                        final String action = child.getName();
 851                        final String sessionId = child.getAttribute("id");
 852                        if (sessionId == null) {
 853                            break;
 854                        }
 855                        if (query == null) {
 856                            if (serverMsgId == null) {
 857                                serverMsgId = extractStanzaId(account, packet);
 858                            }
 859                            mXmppConnectionService
 860                                    .getJingleConnectionManager()
 861                                    .deliverMessage(
 862                                            account,
 863                                            packet.getTo(),
 864                                            packet.getFrom(),
 865                                            child,
 866                                            remoteMsgId,
 867                                            serverMsgId,
 868                                            timestamp);
 869                            final Contact contact = account.getRoster().getContact(from);
 870                            if (mXmppConnectionService.confirmMessages()
 871                                    && !contact.isSelf()
 872                                    && remoteMsgId != null
 873                                    && contact.showInContactList()) {
 874                                processMessageReceipts(account, packet, remoteMsgId, null);
 875                            }
 876                        } else if (query.isCatchup()) {
 877                            if ("propose".equals(action)) {
 878                                final Element description = child.findChild("description");
 879                                final String namespace = description == null ? null : description.getNamespace();
 880                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 881                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 882                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 883                                    if (preExistingMessage != null) {
 884                                        preExistingMessage.setServerMsgId(serverMsgId);
 885                                        mXmppConnectionService.updateMessage(preExistingMessage);
 886                                        break;
 887                                    }
 888                                    final Message message = new Message(
 889                                            c,
 890                                            status,
 891                                            Message.TYPE_RTP_SESSION,
 892                                            sessionId
 893                                    );
 894                                    message.setServerMsgId(serverMsgId);
 895                                    message.setTime(timestamp);
 896                                    message.setBody(new RtpSessionStatus(false, 0).toString());
 897                                    c.add(message);
 898                                    mXmppConnectionService.databaseBackend.createMessage(message);
 899                                }
 900                            } else if ("proceed".equals(action)) {
 901                                //status needs to be flipped to find the original propose
 902                                final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 903                                final int s = packet.fromAccount(account) ? Message.STATUS_RECEIVED : Message.STATUS_SEND;
 904                                final Message message = c.findRtpSession(sessionId, s);
 905                                if (message != null) {
 906                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 907                                    if (serverMsgId != null) {
 908                                        message.setServerMsgId(serverMsgId);
 909                                    }
 910                                    message.setTime(timestamp);
 911                                    mXmppConnectionService.updateMessage(message, true);
 912                                } else {
 913                                    Log.d(Config.LOGTAG, "unable to find original rtp session message for received propose");
 914                                }
 915
 916                            }
 917                        } else {
 918                            //MAM reloads (non catchups
 919                            if ("propose".equals(action)) {
 920                                final Element description = child.findChild("description");
 921                                final String namespace = description == null ? null : description.getNamespace();
 922                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 923                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 924                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 925                                    if (preExistingMessage != null) {
 926                                        preExistingMessage.setServerMsgId(serverMsgId);
 927                                        mXmppConnectionService.updateMessage(preExistingMessage);
 928                                        break;
 929                                    }
 930                                    final Message message = new Message(
 931                                            c,
 932                                            status,
 933                                            Message.TYPE_RTP_SESSION,
 934                                            sessionId
 935                                    );
 936                                    message.setServerMsgId(serverMsgId);
 937                                    message.setTime(timestamp);
 938                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 939                                    if (query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 940                                        c.prepend(query.getActualInThisQuery(), message);
 941                                    } else {
 942                                        c.add(message);
 943                                    }
 944                                    query.incrementActualMessageCount();
 945                                    mXmppConnectionService.databaseBackend.createMessage(message);
 946                                }
 947                            }
 948                        }
 949                        break;
 950                    }
 951                }
 952            }
 953        }
 954
 955        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
 956        if (received == null) {
 957            received = packet.findChild("received", "urn:xmpp:receipts");
 958        }
 959        if (received != null) {
 960            String id = received.getAttribute("id");
 961            if (packet.fromAccount(account)) {
 962                if (query != null && id != null && packet.getTo() != null) {
 963                    query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
 964                }
 965            } else if (id != null) {
 966                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 967                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 968                    mXmppConnectionService.getJingleConnectionManager()
 969                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.DISCOVERED);
 970                } else {
 971                    mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_RECEIVED);
 972                }
 973            }
 974        }
 975        Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
 976        if (displayed != null) {
 977            final String id = displayed.getAttribute("id");
 978            final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
 979            if (packet.fromAccount(account) && !selfAddressed) {
 980                dismissNotification(account, counterpart, query, id);
 981                if (query == null) {
 982                    activateGracePeriod(account);
 983                }
 984            } else if (isTypeGroupChat) {
 985                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
 986                final Message message;
 987                if (conversation != null && id != null) {
 988                    if (sender != null) {
 989                        message = conversation.findMessageWithRemoteId(id, sender);
 990                    } else {
 991                        message = conversation.findMessageWithServerMsgId(id);
 992                    }
 993                } else {
 994                    message = null;
 995                }
 996                if (message != null) {
 997                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 998                    final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
 999                    final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
1000                    if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
1001                        if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
1002                            mXmppConnectionService.markRead(conversation);
1003                        }
1004                    } else if (!counterpart.isBareJid() && trueJid != null) {
1005                        final ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
1006                        if (message.addReadByMarker(readByMarker)) {
1007                            mXmppConnectionService.updateMessage(message, false);
1008                        }
1009                    }
1010                }
1011            } else {
1012                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
1013                Message message = displayedMessage == null ? null : displayedMessage.prev();
1014                while (message != null
1015                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
1016                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
1017                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
1018                    message = message.prev();
1019                }
1020                if (displayedMessage != null && selfAddressed) {
1021                    dismissNotification(account, counterpart, query, id);
1022                }
1023            }
1024        }
1025
1026        final Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
1027        if (event != null && InvalidJid.hasValidFrom(original) && original.getFrom().isBareJid()) {
1028            if (event.hasChild("items")) {
1029                parseEvent(event, original.getFrom(), account);
1030            } else if (event.hasChild("delete")) {
1031                parseDeleteEvent(event, original.getFrom(), account);
1032            } else if (event.hasChild("purge")) {
1033                parsePurgeEvent(event, original.getFrom(), account);
1034            }
1035        }
1036
1037        final String nick = packet.findChildContent("nick", Namespace.NICK);
1038        if (nick != null && InvalidJid.hasValidFrom(original)) {
1039            if (mXmppConnectionService.isMuc(account, from)) {
1040                return;
1041            }
1042            final Contact contact = account.getRoster().getContact(from);
1043            if (contact.setPresenceName(nick)) {
1044                mXmppConnectionService.syncRoster(account);
1045                mXmppConnectionService.getAvatarService().clear(contact);
1046            }
1047        }
1048    }
1049
1050    private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query, final String id) {
1051        final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1052        if (conversation != null && (query == null || query.isCatchup())) {
1053            final String displayableId = conversation.findMostRecentRemoteDisplayableId();
1054            if (displayableId != null && displayableId.equals(id)) {
1055                mXmppConnectionService.markRead(conversation);
1056            } else {
1057                Log.w(Config.LOGTAG, account.getJid().asBareJid() + ": received dismissing display marker that did not match our last id in that conversation");
1058            }
1059        }
1060    }
1061
1062    private void processMessageReceipts(final Account account, final MessagePacket packet, final String remoteMsgId, MessageArchiveService.Query query) {
1063        final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
1064        final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
1065        if (query == null) {
1066            final ArrayList<String> receiptsNamespaces = new ArrayList<>();
1067            if (markable) {
1068                receiptsNamespaces.add("urn:xmpp:chat-markers:0");
1069            }
1070            if (request) {
1071                receiptsNamespaces.add("urn:xmpp:receipts");
1072            }
1073            if (receiptsNamespaces.size() > 0) {
1074                final MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
1075                        packet.getFrom(),
1076                        remoteMsgId,
1077                        receiptsNamespaces,
1078                        packet.getType());
1079                mXmppConnectionService.sendMessagePacket(account, receipt);
1080            }
1081        } else if (query.isCatchup()) {
1082            if (request) {
1083                query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), remoteMsgId));
1084            }
1085        }
1086    }
1087
1088    private void activateGracePeriod(Account account) {
1089        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
1090        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
1091        account.activateGracePeriod(duration);
1092    }
1093
1094    private class Invite {
1095        final Jid jid;
1096        final String password;
1097        final boolean direct;
1098        final Jid inviter;
1099
1100        Invite(Jid jid, String password, boolean direct, Jid inviter) {
1101            this.jid = jid;
1102            this.password = password;
1103            this.direct = direct;
1104            this.inviter = inviter;
1105        }
1106
1107        public boolean execute(final Account account) {
1108            if (this.jid == null) {
1109                return false;
1110            }
1111            final Contact contact = this.inviter != null ? account.getRoster().getContact(this.inviter) : null;
1112            if (contact != null && contact.isBlocked()) {
1113                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ignore invite from "+contact.getJid()+" because contact is blocked");
1114                return false;
1115            }
1116            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
1117            if (conversation.getMucOptions().online()) {
1118                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received invite to " + jid + " but muc is considered to be online");
1119                mXmppConnectionService.mucSelfPingAndRejoin(conversation);
1120            } else {
1121                conversation.getMucOptions().setPassword(password);
1122                mXmppConnectionService.databaseBackend.updateConversation(conversation);
1123                mXmppConnectionService.joinMuc(conversation, contact != null && contact.showInContactList());
1124                mXmppConnectionService.updateConversationUi();
1125            }
1126            return true;
1127        }
1128    }
1129}