XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.annotation.TargetApi;
   6import android.app.AlarmManager;
   7import android.app.Notification;
   8import android.app.NotificationManager;
   9import android.app.PendingIntent;
  10import android.app.Service;
  11import android.content.BroadcastReceiver;
  12import android.content.ComponentName;
  13import android.content.Context;
  14import android.content.Intent;
  15import android.content.IntentFilter;
  16import android.content.SharedPreferences;
  17import android.content.pm.PackageManager;
  18import android.database.ContentObserver;
  19import android.graphics.Bitmap;
  20import android.media.AudioManager;
  21import android.net.ConnectivityManager;
  22import android.net.NetworkInfo;
  23import android.net.Uri;
  24import android.os.Binder;
  25import android.os.Build;
  26import android.os.Bundle;
  27import android.os.Environment;
  28import android.os.IBinder;
  29import android.os.PowerManager;
  30import android.os.PowerManager.WakeLock;
  31import android.os.SystemClock;
  32import android.preference.PreferenceManager;
  33import android.provider.ContactsContract;
  34import android.security.KeyChain;
  35import android.support.annotation.BoolRes;
  36import android.support.annotation.IntegerRes;
  37import android.support.v4.app.RemoteInput;
  38import android.support.v4.content.ContextCompat;
  39import android.text.TextUtils;
  40import android.util.DisplayMetrics;
  41import android.util.Log;
  42import android.util.LruCache;
  43import android.util.Pair;
  44
  45import org.conscrypt.Conscrypt;
  46import org.openintents.openpgp.IOpenPgpService2;
  47import org.openintents.openpgp.util.OpenPgpApi;
  48import org.openintents.openpgp.util.OpenPgpServiceConnection;
  49
  50import java.io.File;
  51import java.net.URL;
  52import java.security.SecureRandom;
  53import java.security.Security;
  54import java.security.cert.CertificateException;
  55import java.security.cert.X509Certificate;
  56import java.util.ArrayList;
  57import java.util.Arrays;
  58import java.util.Collection;
  59import java.util.Collections;
  60import java.util.HashMap;
  61import java.util.HashSet;
  62import java.util.Hashtable;
  63import java.util.Iterator;
  64import java.util.List;
  65import java.util.ListIterator;
  66import java.util.Map;
  67import java.util.Set;
  68import java.util.WeakHashMap;
  69import java.util.concurrent.CopyOnWriteArrayList;
  70import java.util.concurrent.CountDownLatch;
  71import java.util.concurrent.ExecutorService;
  72import java.util.concurrent.Executors;
  73import java.util.concurrent.ThreadPoolExecutor;
  74import java.util.concurrent.atomic.AtomicBoolean;
  75import java.util.concurrent.atomic.AtomicLong;
  76
  77
  78import eu.siacs.conversations.Config;
  79import eu.siacs.conversations.R;
  80import eu.siacs.conversations.android.JabberIdContact;
  81import eu.siacs.conversations.crypto.OmemoSetting;
  82import eu.siacs.conversations.crypto.PgpDecryptionService;
  83import eu.siacs.conversations.crypto.PgpEngine;
  84import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  85import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  86import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  87import eu.siacs.conversations.entities.Account;
  88import eu.siacs.conversations.entities.Blockable;
  89import eu.siacs.conversations.entities.Bookmark;
  90import eu.siacs.conversations.entities.Contact;
  91import eu.siacs.conversations.entities.Conversation;
  92import eu.siacs.conversations.entities.Conversational;
  93import eu.siacs.conversations.entities.Message;
  94import eu.siacs.conversations.entities.MucOptions;
  95import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  96import eu.siacs.conversations.entities.Presence;
  97import eu.siacs.conversations.entities.PresenceTemplate;
  98import eu.siacs.conversations.entities.Roster;
  99import eu.siacs.conversations.entities.ServiceDiscoveryResult;
 100import eu.siacs.conversations.generator.AbstractGenerator;
 101import eu.siacs.conversations.generator.IqGenerator;
 102import eu.siacs.conversations.generator.MessageGenerator;
 103import eu.siacs.conversations.generator.PresenceGenerator;
 104import eu.siacs.conversations.http.HttpConnectionManager;
 105import eu.siacs.conversations.http.CustomURLStreamHandlerFactory;
 106import eu.siacs.conversations.http.services.MuclumbusService;
 107import eu.siacs.conversations.parser.AbstractParser;
 108import eu.siacs.conversations.parser.IqParser;
 109import eu.siacs.conversations.parser.MessageParser;
 110import eu.siacs.conversations.parser.PresenceParser;
 111import eu.siacs.conversations.persistance.DatabaseBackend;
 112import eu.siacs.conversations.persistance.FileBackend;
 113import eu.siacs.conversations.ui.ChooseAccountForProfilePictureActivity;
 114import eu.siacs.conversations.ui.SettingsActivity;
 115import eu.siacs.conversations.ui.UiCallback;
 116import eu.siacs.conversations.ui.interfaces.OnAvatarPublication;
 117import eu.siacs.conversations.ui.interfaces.OnMediaLoaded;
 118import eu.siacs.conversations.ui.interfaces.OnSearchResultsAvailable;
 119import eu.siacs.conversations.utils.Compatibility;
 120import eu.siacs.conversations.utils.ConversationsFileObserver;
 121import eu.siacs.conversations.utils.CryptoHelper;
 122import eu.siacs.conversations.utils.ExceptionHelper;
 123import eu.siacs.conversations.utils.MimeUtils;
 124import eu.siacs.conversations.utils.PhoneHelper;
 125import eu.siacs.conversations.utils.QuickLoader;
 126import eu.siacs.conversations.utils.ReplacingSerialSingleThreadExecutor;
 127import eu.siacs.conversations.utils.ReplacingTaskManager;
 128import eu.siacs.conversations.utils.Resolver;
 129import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
 130import eu.siacs.conversations.utils.StringUtils;
 131import eu.siacs.conversations.utils.WakeLockHelper;
 132import eu.siacs.conversations.xml.Namespace;
 133import eu.siacs.conversations.utils.XmppUri;
 134import eu.siacs.conversations.xml.Element;
 135import eu.siacs.conversations.xmpp.OnBindListener;
 136import eu.siacs.conversations.xmpp.OnContactStatusChanged;
 137import eu.siacs.conversations.xmpp.OnIqPacketReceived;
 138import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
 139import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
 140import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
 141import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
 142import eu.siacs.conversations.xmpp.OnStatusChanged;
 143import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
 144import eu.siacs.conversations.xmpp.Patches;
 145import eu.siacs.conversations.xmpp.XmppConnection;
 146import eu.siacs.conversations.xmpp.chatstate.ChatState;
 147import eu.siacs.conversations.xmpp.forms.Data;
 148import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 149import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
 150import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
 151import eu.siacs.conversations.xmpp.mam.MamReference;
 152import eu.siacs.conversations.xmpp.pep.Avatar;
 153import eu.siacs.conversations.xmpp.pep.PublishOptions;
 154import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 155import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 156import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 157import me.leolin.shortcutbadger.ShortcutBadger;
 158import retrofit2.Call;
 159import retrofit2.Callback;
 160import retrofit2.Response;
 161import retrofit2.Retrofit;
 162import retrofit2.converter.gson.GsonConverterFactory;
 163import rocks.xmpp.addr.Jid;
 164
 165public class XmppConnectionService extends Service {
 166
 167    public static final String ACTION_REPLY_TO_CONVERSATION = "reply_to_conversations";
 168    public static final String ACTION_MARK_AS_READ = "mark_as_read";
 169    public static final String ACTION_SNOOZE = "snooze";
 170    public static final String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 171    public static final String ACTION_DISMISS_ERROR_NOTIFICATIONS = "dismiss_error";
 172    public static final String ACTION_TRY_AGAIN = "try_again";
 173    public static final String ACTION_IDLE_PING = "idle_ping";
 174    public static final String ACTION_FCM_TOKEN_REFRESH = "fcm_token_refresh";
 175    public static final String ACTION_FCM_MESSAGE_RECEIVED = "fcm_message_received";
 176    private static final String ACTION_POST_CONNECTIVITY_CHANGE = "eu.siacs.conversations.POST_CONNECTIVITY_CHANGE";
 177
 178    private static final String SETTING_LAST_ACTIVITY_TS = "last_activity_timestamp";
 179
 180    static {
 181        URL.setURLStreamHandlerFactory(new CustomURLStreamHandlerFactory());
 182    }
 183
 184    public final CountDownLatch restoredFromDatabaseLatch = new CountDownLatch(1);
 185    private final SerialSingleThreadExecutor mFileAddingExecutor = new SerialSingleThreadExecutor("FileAdding");
 186    private final SerialSingleThreadExecutor mVideoCompressionExecutor = new SerialSingleThreadExecutor("VideoCompression");
 187    private final SerialSingleThreadExecutor mDatabaseWriterExecutor = new SerialSingleThreadExecutor("DatabaseWriter");
 188    private final SerialSingleThreadExecutor mDatabaseReaderExecutor = new SerialSingleThreadExecutor("DatabaseReader");
 189    private final SerialSingleThreadExecutor mNotificationExecutor = new SerialSingleThreadExecutor("NotificationExecutor");
 190    private final ReplacingTaskManager mRosterSyncTaskManager = new ReplacingTaskManager();
 191    private final IBinder mBinder = new XmppConnectionBinder();
 192    private final List<Conversation> conversations = new CopyOnWriteArrayList<>();
 193    private final IqGenerator mIqGenerator = new IqGenerator(this);
 194    private final Set<String> mInProgressAvatarFetches = new HashSet<>();
 195    private final Set<String> mOmittedPepAvatarFetches = new HashSet<>();
 196    private final HashSet<Jid> mLowPingTimeoutMode = new HashSet<>();
 197    private final OnIqPacketReceived mDefaultIqHandler = (account, packet) -> {
 198        if (packet.getType() != IqPacket.TYPE.RESULT) {
 199            Element error = packet.findChild("error");
 200            String text = error != null ? error.findChildContent("text") : null;
 201            if (text != null) {
 202                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received iq error - " + text);
 203            }
 204        }
 205    };
 206    public DatabaseBackend databaseBackend;
 207    private ReplacingSerialSingleThreadExecutor mContactMergerExecutor = new ReplacingSerialSingleThreadExecutor("ContactMerger");
 208    private long mLastActivity = 0;
 209    private FileBackend fileBackend = new FileBackend(this);
 210    private MemorizingTrustManager mMemorizingTrustManager;
 211    private NotificationService mNotificationService = new NotificationService(this);
 212    private ChannelDiscoveryService mChannelDiscoveryService = new ChannelDiscoveryService(this);
 213    private ShortcutService mShortcutService = new ShortcutService(this);
 214    private AtomicBoolean mInitialAddressbookSyncCompleted = new AtomicBoolean(false);
 215    private AtomicBoolean mForceForegroundService = new AtomicBoolean(false);
 216    private AtomicBoolean mForceDuringOnCreate = new AtomicBoolean(false);
 217    private OnMessagePacketReceived mMessageParser = new MessageParser(this);
 218    private OnPresencePacketReceived mPresenceParser = new PresenceParser(this);
 219    private IqParser mIqParser = new IqParser(this);
 220    private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 221    public OnContactStatusChanged onContactStatusChanged = (contact, online) -> {
 222        Conversation conversation = find(getConversations(), contact);
 223        if (conversation != null) {
 224            if (online) {
 225                if (contact.getPresences().size() == 1) {
 226                    sendUnsentMessages(conversation);
 227                }
 228            }
 229        }
 230    };
 231    private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 232    private List<Account> accounts;
 233    private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 234            this);
 235    private final OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 236
 237        @Override
 238        public void onJinglePacketReceived(Account account, JinglePacket packet) {
 239            mJingleConnectionManager.deliverPacket(account, packet);
 240        }
 241    };
 242    private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(this);
 243    private AvatarService mAvatarService = new AvatarService(this);
 244    private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 245    private PushManagementService mPushManagementService = new PushManagementService(this);
 246    private QuickConversationsService mQuickConversationsService = new QuickConversationsService(this);
 247    private final ConversationsFileObserver fileObserver = new ConversationsFileObserver(
 248            Environment.getExternalStorageDirectory().getAbsolutePath()
 249    ) {
 250        @Override
 251        public void onEvent(int event, String path) {
 252            markFileDeleted(path);
 253        }
 254    };
 255    private final OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 256
 257        @Override
 258        public boolean onMessageAcknowledged(Account account, String uuid) {
 259            for (final Conversation conversation : getConversations()) {
 260                if (conversation.getAccount() == account) {
 261                    Message message = conversation.findUnsentMessageWithUuid(uuid);
 262                    if (message != null) {
 263                        message.setStatus(Message.STATUS_SEND);
 264                        message.setErrorMessage(null);
 265                        databaseBackend.updateMessage(message, false);
 266                        return true;
 267                    }
 268                }
 269            }
 270            return false;
 271        }
 272    };
 273
 274    private boolean destroyed = false;
 275
 276    private int unreadCount = -1;
 277
 278    //Ui callback listeners
 279    private final Set<OnConversationUpdate> mOnConversationUpdates = Collections.newSetFromMap(new WeakHashMap<OnConversationUpdate, Boolean>());
 280    private final Set<OnShowErrorToast> mOnShowErrorToasts = Collections.newSetFromMap(new WeakHashMap<OnShowErrorToast, Boolean>());
 281    private final Set<OnAccountUpdate> mOnAccountUpdates = Collections.newSetFromMap(new WeakHashMap<OnAccountUpdate, Boolean>());
 282    private final Set<OnCaptchaRequested> mOnCaptchaRequested = Collections.newSetFromMap(new WeakHashMap<OnCaptchaRequested, Boolean>());
 283    private final Set<OnRosterUpdate> mOnRosterUpdates = Collections.newSetFromMap(new WeakHashMap<OnRosterUpdate, Boolean>());
 284    private final Set<OnUpdateBlocklist> mOnUpdateBlocklist = Collections.newSetFromMap(new WeakHashMap<OnUpdateBlocklist, Boolean>());
 285    private final Set<OnMucRosterUpdate> mOnMucRosterUpdate = Collections.newSetFromMap(new WeakHashMap<OnMucRosterUpdate, Boolean>());
 286    private final Set<OnKeyStatusUpdated> mOnKeyStatusUpdated = Collections.newSetFromMap(new WeakHashMap<OnKeyStatusUpdated, Boolean>());
 287
 288    private final Object LISTENER_LOCK = new Object();
 289
 290
 291    private final OnBindListener mOnBindListener = new OnBindListener() {
 292
 293        @Override
 294        public void onBind(final Account account) {
 295            synchronized (mInProgressAvatarFetches) {
 296                for (Iterator<String> iterator = mInProgressAvatarFetches.iterator(); iterator.hasNext(); ) {
 297                    final String KEY = iterator.next();
 298                    if (KEY.startsWith(account.getJid().asBareJid() + "_")) {
 299                        iterator.remove();
 300                    }
 301                }
 302            }
 303            boolean loggedInSuccessfully = account.setOption(Account.OPTION_LOGGED_IN_SUCCESSFULLY, true);
 304            boolean gainedFeature = account.setOption(Account.OPTION_HTTP_UPLOAD_AVAILABLE, account.getXmppConnection().getFeatures().httpUpload(0));
 305            if (loggedInSuccessfully || gainedFeature) {
 306                databaseBackend.updateAccount(account);
 307            }
 308
 309            if (loggedInSuccessfully) {
 310                if (!TextUtils.isEmpty(account.getDisplayName())) {
 311                    Log.d(Config.LOGTAG,account.getJid().asBareJid()+": display name wasn't empty on first log in. publishing");
 312                    publishDisplayName(account);
 313                }
 314            }
 315
 316            account.getRoster().clearPresences();
 317            mJingleConnectionManager.cancelInTransmission();
 318            mQuickConversationsService.considerSyncBackground(false);
 319            fetchRosterFromServer(account);
 320            if (!account.getXmppConnection().getFeatures().bookmarksConversion()) {
 321                fetchBookmarks(account);
 322            }
 323            final boolean flexible = account.getXmppConnection().getFeatures().flexibleOfflineMessageRetrieval();
 324            final boolean catchup = getMessageArchiveService().inCatchup(account);
 325            if (flexible && catchup && account.getXmppConnection().isMamPreferenceAlways()) {
 326                sendIqPacket(account, mIqGenerator.purgeOfflineMessages(), (acc, packet) -> {
 327                    if (packet.getType() == IqPacket.TYPE.RESULT) {
 328                        Log.d(Config.LOGTAG, acc.getJid().asBareJid() + ": successfully purged offline messages");
 329                    }
 330                });
 331            }
 332            sendPresence(account);
 333            if (mPushManagementService.available(account)) {
 334                mPushManagementService.registerPushTokenOnServer(account);
 335            }
 336            connectMultiModeConversations(account);
 337            syncDirtyContacts(account);
 338        }
 339    };
 340    private AtomicLong mLastExpiryRun = new AtomicLong(0);
 341    private SecureRandom mRandom;
 342    private LruCache<Pair<String, String>, ServiceDiscoveryResult> discoCache = new LruCache<>(20);
 343    private OnStatusChanged statusListener = new OnStatusChanged() {
 344
 345        @Override
 346        public void onStatusChanged(final Account account) {
 347            XmppConnection connection = account.getXmppConnection();
 348            updateAccountUi();
 349
 350            if (account.getStatus() == Account.State.ONLINE || account.getStatus().isError()) {
 351                mQuickConversationsService.signalAccountStateChange();
 352            }
 353
 354            if (account.getStatus() == Account.State.ONLINE) {
 355                synchronized (mLowPingTimeoutMode) {
 356                    if (mLowPingTimeoutMode.remove(account.getJid().asBareJid())) {
 357                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": leaving low ping timeout mode");
 358                    }
 359                }
 360                if (account.setShowErrorNotification(true)) {
 361                    databaseBackend.updateAccount(account);
 362                }
 363                mMessageArchiveService.executePendingQueries(account);
 364                if (connection != null && connection.getFeatures().csi()) {
 365                    if (checkListeners()) {
 366                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + " sending csi//inactive");
 367                        connection.sendInactive();
 368                    } else {
 369                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + " sending csi//active");
 370                        connection.sendActive();
 371                    }
 372                }
 373                List<Conversation> conversations = getConversations();
 374                for (Conversation conversation : conversations) {
 375                    if (conversation.getAccount() == account && !account.pendingConferenceJoins.contains(conversation)) {
 376                        sendUnsentMessages(conversation);
 377                    }
 378                }
 379                for (Conversation conversation : account.pendingConferenceLeaves) {
 380                    leaveMuc(conversation);
 381                }
 382                account.pendingConferenceLeaves.clear();
 383                for (Conversation conversation : account.pendingConferenceJoins) {
 384                    joinMuc(conversation);
 385                }
 386                account.pendingConferenceJoins.clear();
 387                scheduleWakeUpCall(Config.PING_MAX_INTERVAL, account.getUuid().hashCode());
 388            } else if (account.getStatus() == Account.State.OFFLINE || account.getStatus() == Account.State.DISABLED) {
 389                resetSendingToWaiting(account);
 390                if (account.isEnabled() && isInLowPingTimeoutMode(account)) {
 391                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": went into offline state during low ping mode. reconnecting now");
 392                    reconnectAccount(account, true, false);
 393                } else {
 394                    int timeToReconnect = mRandom.nextInt(10) + 2;
 395                    scheduleWakeUpCall(timeToReconnect, account.getUuid().hashCode());
 396                }
 397            } else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 398                databaseBackend.updateAccount(account);
 399                reconnectAccount(account, true, false);
 400            } else if (account.getStatus() != Account.State.CONNECTING && account.getStatus() != Account.State.NO_INTERNET) {
 401                resetSendingToWaiting(account);
 402                if (connection != null && account.getStatus().isAttemptReconnect()) {
 403                    final int next = connection.getTimeToNextAttempt();
 404                    final boolean lowPingTimeoutMode = isInLowPingTimeoutMode(account);
 405                    if (next <= 0) {
 406                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": error connecting account. reconnecting now. lowPingTimeout=" + Boolean.toString(lowPingTimeoutMode));
 407                        reconnectAccount(account, true, false);
 408                    } else {
 409                        final int attempt = connection.getAttempt() + 1;
 410                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": error connecting account. try again in " + next + "s for the " + attempt + " time. lowPingTimeout=" + Boolean.toString(lowPingTimeoutMode));
 411                        scheduleWakeUpCall(next, account.getUuid().hashCode());
 412                    }
 413                }
 414            }
 415            getNotificationService().updateErrorNotification();
 416        }
 417    };
 418    private OpenPgpServiceConnection pgpServiceConnection;
 419    private PgpEngine mPgpEngine = null;
 420    private WakeLock wakeLock;
 421    private PowerManager pm;
 422    private LruCache<String, Bitmap> mBitmapCache;
 423    private BroadcastReceiver mInternalEventReceiver = new InternalEventReceiver();
 424    private BroadcastReceiver mInternalScreenEventReceiver = new InternalEventReceiver();
 425
 426    private static String generateFetchKey(Account account, final Avatar avatar) {
 427        return account.getJid().asBareJid() + "_" + avatar.owner + "_" + avatar.sha1sum;
 428    }
 429
 430    private boolean isInLowPingTimeoutMode(Account account) {
 431        synchronized (mLowPingTimeoutMode) {
 432            return mLowPingTimeoutMode.contains(account.getJid().asBareJid());
 433        }
 434    }
 435
 436    public void startForcingForegroundNotification() {
 437        mForceForegroundService.set(true);
 438        toggleForegroundService();
 439    }
 440
 441    public void stopForcingForegroundNotification() {
 442        mForceForegroundService.set(false);
 443        toggleForegroundService();
 444    }
 445
 446    public boolean areMessagesInitialized() {
 447        return this.restoredFromDatabaseLatch.getCount() == 0;
 448    }
 449
 450    public PgpEngine getPgpEngine() {
 451        if (!Config.supportOpenPgp()) {
 452            return null;
 453        } else if (pgpServiceConnection != null && pgpServiceConnection.isBound()) {
 454            if (this.mPgpEngine == null) {
 455                this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 456                        getApplicationContext(),
 457                        pgpServiceConnection.getService()), this);
 458            }
 459            return mPgpEngine;
 460        } else {
 461            return null;
 462        }
 463
 464    }
 465
 466    public OpenPgpApi getOpenPgpApi() {
 467        if (!Config.supportOpenPgp()) {
 468            return null;
 469        } else if (pgpServiceConnection != null && pgpServiceConnection.isBound()) {
 470            return new OpenPgpApi(this, pgpServiceConnection.getService());
 471        } else {
 472            return null;
 473        }
 474    }
 475
 476    public FileBackend getFileBackend() {
 477        return this.fileBackend;
 478    }
 479
 480    public AvatarService getAvatarService() {
 481        return this.mAvatarService;
 482    }
 483
 484    public void attachLocationToConversation(final Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 485        int encryption = conversation.getNextEncryption();
 486        if (encryption == Message.ENCRYPTION_PGP) {
 487            encryption = Message.ENCRYPTION_DECRYPTED;
 488        }
 489        Message message = new Message(conversation, uri.toString(), encryption);
 490        if (conversation.getNextCounterpart() != null) {
 491            message.setCounterpart(conversation.getNextCounterpart());
 492        }
 493        if (encryption == Message.ENCRYPTION_DECRYPTED) {
 494            getPgpEngine().encrypt(message, callback);
 495        } else {
 496            sendMessage(message);
 497            callback.success(message);
 498        }
 499    }
 500
 501    public void attachFileToConversation(final Conversation conversation, final Uri uri, final String type, final UiCallback<Message> callback) {
 502        final Message message;
 503        if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 504            message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
 505        } else {
 506            message = new Message(conversation, "", conversation.getNextEncryption());
 507        }
 508        message.setCounterpart(conversation.getNextCounterpart());
 509        message.setType(Message.TYPE_FILE);
 510        final AttachFileToConversationRunnable runnable = new AttachFileToConversationRunnable(this, uri, type, message, callback);
 511        if (runnable.isVideoMessage()) {
 512            mVideoCompressionExecutor.execute(runnable);
 513        } else {
 514            mFileAddingExecutor.execute(runnable);
 515        }
 516    }
 517
 518    public void attachImageToConversation(final Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 519        final String mimeType = MimeUtils.guessMimeTypeFromUri(this, uri);
 520        final String compressPictures = getCompressPicturesPreference();
 521
 522        if ("never".equals(compressPictures)
 523                || ("auto".equals(compressPictures) && getFileBackend().useImageAsIs(uri))
 524                || (mimeType != null && mimeType.endsWith("/gif"))
 525                || getFileBackend().unusualBounds(uri)) {
 526            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": not compressing picture. sending as file");
 527            attachFileToConversation(conversation, uri, mimeType, callback);
 528            return;
 529        }
 530        final Message message;
 531        if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 532            message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
 533        } else {
 534            message = new Message(conversation, "", conversation.getNextEncryption());
 535        }
 536        message.setCounterpart(conversation.getNextCounterpart());
 537        message.setType(Message.TYPE_IMAGE);
 538        mFileAddingExecutor.execute(() -> {
 539            try {
 540                getFileBackend().copyImageToPrivateStorage(message, uri);
 541                if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 542                    final PgpEngine pgpEngine = getPgpEngine();
 543                    if (pgpEngine != null) {
 544                        pgpEngine.encrypt(message, callback);
 545                    } else if (callback != null) {
 546                        callback.error(R.string.unable_to_connect_to_keychain, null);
 547                    }
 548                } else {
 549                    sendMessage(message);
 550                    callback.success(message);
 551                }
 552            } catch (final FileBackend.FileCopyException e) {
 553                callback.error(e.getResId(), message);
 554            }
 555        });
 556    }
 557
 558    public Conversation find(Bookmark bookmark) {
 559        return find(bookmark.getAccount(), bookmark.getJid());
 560    }
 561
 562    public Conversation find(final Account account, final Jid jid) {
 563        return find(getConversations(), account, jid);
 564    }
 565
 566    public boolean isMuc(final Account account, final Jid jid) {
 567        final Conversation c = find(account, jid);
 568        return c != null && c.getMode() == Conversational.MODE_MULTI;
 569    }
 570
 571    public void search(List<String> term, OnSearchResultsAvailable onSearchResultsAvailable) {
 572        MessageSearchTask.search(this, term, onSearchResultsAvailable);
 573    }
 574
 575    @Override
 576    public int onStartCommand(Intent intent, int flags, int startId) {
 577        final String action = intent == null ? null : intent.getAction();
 578        final boolean needsForegroundService = intent != null && intent.getBooleanExtra(EventReceiver.EXTRA_NEEDS_FOREGROUND_SERVICE, false);
 579        if (needsForegroundService) {
 580            Log.d(Config.LOGTAG,"toggle forced foreground service after receiving event (action="+action+")");
 581            toggleForegroundService(true);
 582        }
 583        String pushedAccountHash = null;
 584        boolean interactive = false;
 585        if (action != null) {
 586            final String uuid = intent.getStringExtra("uuid");
 587            switch (action) {
 588                case ConnectivityManager.CONNECTIVITY_ACTION:
 589                    if (hasInternetConnection()) {
 590                        if (Config.POST_CONNECTIVITY_CHANGE_PING_INTERVAL > 0) {
 591                            schedulePostConnectivityChange();
 592                        }
 593                        if (Config.RESET_ATTEMPT_COUNT_ON_NETWORK_CHANGE) {
 594                            resetAllAttemptCounts(true, false);
 595                        }
 596                    }
 597                    break;
 598                case Intent.ACTION_SHUTDOWN:
 599                    logoutAndSave(true);
 600                    return START_NOT_STICKY;
 601                case ACTION_CLEAR_NOTIFICATION:
 602                    mNotificationExecutor.execute(() -> {
 603                        try {
 604                            final Conversation c = findConversationByUuid(uuid);
 605                            if (c != null) {
 606                                mNotificationService.clear(c);
 607                            } else {
 608                                mNotificationService.clear();
 609                            }
 610                            restoredFromDatabaseLatch.await();
 611
 612                        } catch (InterruptedException e) {
 613                            Log.d(Config.LOGTAG, "unable to process clear notification");
 614                        }
 615                    });
 616                    break;
 617                case ACTION_DISMISS_ERROR_NOTIFICATIONS:
 618                    dismissErrorNotifications();
 619                    break;
 620                case ACTION_TRY_AGAIN:
 621                    resetAllAttemptCounts(false, true);
 622                    interactive = true;
 623                    break;
 624                case ACTION_REPLY_TO_CONVERSATION:
 625                    Bundle remoteInput = RemoteInput.getResultsFromIntent(intent);
 626                    if (remoteInput == null) {
 627                        break;
 628                    }
 629                    final CharSequence body = remoteInput.getCharSequence("text_reply");
 630                    final boolean dismissNotification = intent.getBooleanExtra("dismiss_notification", false);
 631                    if (body == null || body.length() <= 0) {
 632                        break;
 633                    }
 634                    mNotificationExecutor.execute(() -> {
 635                        try {
 636                            restoredFromDatabaseLatch.await();
 637                            final Conversation c = findConversationByUuid(uuid);
 638                            if (c != null) {
 639                                directReply(c, body.toString(), dismissNotification);
 640                            }
 641                        } catch (InterruptedException e) {
 642                            Log.d(Config.LOGTAG, "unable to process direct reply");
 643                        }
 644                    });
 645                    break;
 646                case ACTION_MARK_AS_READ:
 647                    mNotificationExecutor.execute(() -> {
 648                        final Conversation c = findConversationByUuid(uuid);
 649                        if (c == null) {
 650                            Log.d(Config.LOGTAG, "received mark read intent for unknown conversation (" + uuid + ")");
 651                            return;
 652                        }
 653                        try {
 654                            restoredFromDatabaseLatch.await();
 655                            sendReadMarker(c, null);
 656                        } catch (InterruptedException e) {
 657                            Log.d(Config.LOGTAG, "unable to process notification read marker for conversation " + c.getName());
 658                        }
 659
 660                    });
 661                    break;
 662                case ACTION_SNOOZE:
 663                    mNotificationExecutor.execute(() -> {
 664                        final Conversation c = findConversationByUuid(uuid);
 665                        if (c == null) {
 666                            Log.d(Config.LOGTAG, "received snooze intent for unknown conversation (" + uuid + ")");
 667                            return;
 668                        }
 669                        c.setMutedTill(System.currentTimeMillis() + 30 * 60 * 1000);
 670                        mNotificationService.clear(c);
 671                        updateConversation(c);
 672                    });
 673                case AudioManager.RINGER_MODE_CHANGED_ACTION:
 674                case NotificationManager.ACTION_INTERRUPTION_FILTER_CHANGED:
 675                    if (dndOnSilentMode()) {
 676                        refreshAllPresences();
 677                    }
 678                    break;
 679                case Intent.ACTION_SCREEN_ON:
 680                    deactivateGracePeriod();
 681                case Intent.ACTION_SCREEN_OFF:
 682                    if (awayWhenScreenOff()) {
 683                        refreshAllPresences();
 684                    }
 685                    break;
 686                case ACTION_FCM_TOKEN_REFRESH:
 687                    refreshAllFcmTokens();
 688                    break;
 689                case ACTION_IDLE_PING:
 690                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 691                        scheduleNextIdlePing();
 692                    }
 693                    break;
 694                case ACTION_FCM_MESSAGE_RECEIVED:
 695                    pushedAccountHash = intent.getStringExtra("account");
 696                    Log.d(Config.LOGTAG, "push message arrived in service. account=" + pushedAccountHash);
 697                    break;
 698                case Intent.ACTION_SEND:
 699                    Uri uri = intent.getData();
 700                    if (uri != null) {
 701                        Log.d(Config.LOGTAG, "received uri permission for " + uri.toString());
 702                    }
 703                    return START_STICKY;
 704            }
 705        }
 706        synchronized (this) {
 707            WakeLockHelper.acquire(wakeLock);
 708            boolean pingNow = ConnectivityManager.CONNECTIVITY_ACTION.equals(action) || (Config.POST_CONNECTIVITY_CHANGE_PING_INTERVAL > 0 && ACTION_POST_CONNECTIVITY_CHANGE.equals(action));
 709            HashSet<Account> pingCandidates = new HashSet<>();
 710            for (Account account : accounts) {
 711                pingNow |= processAccountState(account,
 712                        interactive,
 713                        "ui".equals(action),
 714                        CryptoHelper.getAccountFingerprint(account, PhoneHelper.getAndroidId(this)).equals(pushedAccountHash),
 715                        pingCandidates);
 716            }
 717            if (pingNow) {
 718                for (Account account : pingCandidates) {
 719                    final boolean lowTimeout = isInLowPingTimeoutMode(account);
 720                    account.getXmppConnection().sendPing();
 721                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + " send ping (action=" + action + ",lowTimeout=" + Boolean.toString(lowTimeout) + ")");
 722                    scheduleWakeUpCall(lowTimeout ? Config.LOW_PING_TIMEOUT : Config.PING_TIMEOUT, account.getUuid().hashCode());
 723                }
 724            }
 725            WakeLockHelper.release(wakeLock);
 726        }
 727        if (SystemClock.elapsedRealtime() - mLastExpiryRun.get() >= Config.EXPIRY_INTERVAL) {
 728            expireOldMessages();
 729        }
 730        return START_STICKY;
 731    }
 732
 733    private boolean processAccountState(Account account, boolean interactive, boolean isUiAction, boolean isAccountPushed, HashSet<Account> pingCandidates) {
 734        boolean pingNow = false;
 735        if (account.getStatus().isAttemptReconnect()) {
 736            if (!hasInternetConnection()) {
 737                account.setStatus(Account.State.NO_INTERNET);
 738                if (statusListener != null) {
 739                    statusListener.onStatusChanged(account);
 740                }
 741            } else {
 742                if (account.getStatus() == Account.State.NO_INTERNET) {
 743                    account.setStatus(Account.State.OFFLINE);
 744                    if (statusListener != null) {
 745                        statusListener.onStatusChanged(account);
 746                    }
 747                }
 748                if (account.getStatus() == Account.State.ONLINE) {
 749                    synchronized (mLowPingTimeoutMode) {
 750                        long lastReceived = account.getXmppConnection().getLastPacketReceived();
 751                        long lastSent = account.getXmppConnection().getLastPingSent();
 752                        long pingInterval = isUiAction ? Config.PING_MIN_INTERVAL * 1000 : Config.PING_MAX_INTERVAL * 1000;
 753                        long msToNextPing = (Math.max(lastReceived, lastSent) + pingInterval) - SystemClock.elapsedRealtime();
 754                        int pingTimeout = mLowPingTimeoutMode.contains(account.getJid().asBareJid()) ? Config.LOW_PING_TIMEOUT * 1000 : Config.PING_TIMEOUT * 1000;
 755                        long pingTimeoutIn = (lastSent + pingTimeout) - SystemClock.elapsedRealtime();
 756                        if (lastSent > lastReceived) {
 757                            if (pingTimeoutIn < 0) {
 758                                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ping timeout");
 759                                this.reconnectAccount(account, true, interactive);
 760                            } else {
 761                                int secs = (int) (pingTimeoutIn / 1000);
 762                                this.scheduleWakeUpCall(secs, account.getUuid().hashCode());
 763                            }
 764                        } else {
 765                            pingCandidates.add(account);
 766                            if (isAccountPushed) {
 767                                pingNow = true;
 768                                if (mLowPingTimeoutMode.add(account.getJid().asBareJid())) {
 769                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": entering low ping timeout mode");
 770                                }
 771                            } else if (msToNextPing <= 0) {
 772                                pingNow = true;
 773                            } else {
 774                                this.scheduleWakeUpCall((int) (msToNextPing / 1000), account.getUuid().hashCode());
 775                                if (mLowPingTimeoutMode.remove(account.getJid().asBareJid())) {
 776                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": leaving low ping timeout mode");
 777                                }
 778                            }
 779                        }
 780                    }
 781                } else if (account.getStatus() == Account.State.OFFLINE) {
 782                    reconnectAccount(account, true, interactive);
 783                } else if (account.getStatus() == Account.State.CONNECTING) {
 784                    long secondsSinceLastConnect = (SystemClock.elapsedRealtime() - account.getXmppConnection().getLastConnect()) / 1000;
 785                    long secondsSinceLastDisco = (SystemClock.elapsedRealtime() - account.getXmppConnection().getLastDiscoStarted()) / 1000;
 786                    long discoTimeout = Config.CONNECT_DISCO_TIMEOUT - secondsSinceLastDisco;
 787                    long timeout = Config.CONNECT_TIMEOUT - secondsSinceLastConnect;
 788                    if (timeout < 0) {
 789                        Log.d(Config.LOGTAG, account.getJid() + ": time out during connect reconnecting (secondsSinceLast=" + secondsSinceLastConnect + ")");
 790                        account.getXmppConnection().resetAttemptCount(false);
 791                        reconnectAccount(account, true, interactive);
 792                    } else if (discoTimeout < 0) {
 793                        account.getXmppConnection().sendDiscoTimeout();
 794                        scheduleWakeUpCall((int) Math.min(timeout, discoTimeout), account.getUuid().hashCode());
 795                    } else {
 796                        scheduleWakeUpCall((int) Math.min(timeout, discoTimeout), account.getUuid().hashCode());
 797                    }
 798                } else {
 799                    if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 800                        reconnectAccount(account, true, interactive);
 801                    }
 802                }
 803            }
 804        }
 805        return pingNow;
 806    }
 807
 808    public void discoverChannels(String query, ChannelDiscoveryService.OnChannelSearchResultsFound onChannelSearchResultsFound) {
 809        mChannelDiscoveryService.discover(query, onChannelSearchResultsFound);
 810    }
 811
 812    public boolean isDataSaverDisabled() {
 813        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 814            ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
 815            return !connectivityManager.isActiveNetworkMetered()
 816                    || connectivityManager.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED;
 817        } else {
 818            return true;
 819        }
 820    }
 821
 822    private void directReply(Conversation conversation, String body, final boolean dismissAfterReply) {
 823        Message message = new Message(conversation, body, conversation.getNextEncryption());
 824        message.markUnread();
 825        if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 826            getPgpEngine().encrypt(message, new UiCallback<Message>() {
 827                @Override
 828                public void success(Message message) {
 829                    if (dismissAfterReply) {
 830                        markRead((Conversation) message.getConversation(), true);
 831                    } else {
 832                        mNotificationService.pushFromDirectReply(message);
 833                    }
 834                }
 835
 836                @Override
 837                public void error(int errorCode, Message object) {
 838
 839                }
 840
 841                @Override
 842                public void userInputRequried(PendingIntent pi, Message object) {
 843
 844                }
 845            });
 846        } else {
 847            sendMessage(message);
 848            if (dismissAfterReply) {
 849                markRead(conversation, true);
 850            } else {
 851                mNotificationService.pushFromDirectReply(message);
 852            }
 853        }
 854    }
 855
 856    private boolean dndOnSilentMode() {
 857        return getBooleanPreference(SettingsActivity.DND_ON_SILENT_MODE, R.bool.dnd_on_silent_mode);
 858    }
 859
 860    private boolean manuallyChangePresence() {
 861        return getBooleanPreference(SettingsActivity.MANUALLY_CHANGE_PRESENCE, R.bool.manually_change_presence);
 862    }
 863
 864    private boolean treatVibrateAsSilent() {
 865        return getBooleanPreference(SettingsActivity.TREAT_VIBRATE_AS_SILENT, R.bool.treat_vibrate_as_silent);
 866    }
 867
 868    private boolean awayWhenScreenOff() {
 869        return getBooleanPreference(SettingsActivity.AWAY_WHEN_SCREEN_IS_OFF, R.bool.away_when_screen_off);
 870    }
 871
 872    private String getCompressPicturesPreference() {
 873        return getPreferences().getString("picture_compression", getResources().getString(R.string.picture_compression));
 874    }
 875
 876    private Presence.Status getTargetPresence() {
 877        if (dndOnSilentMode() && isPhoneSilenced()) {
 878            return Presence.Status.DND;
 879        } else if (awayWhenScreenOff() && !isInteractive()) {
 880            return Presence.Status.AWAY;
 881        } else {
 882            return Presence.Status.ONLINE;
 883        }
 884    }
 885
 886    @SuppressLint("NewApi")
 887    @SuppressWarnings("deprecation")
 888    public boolean isInteractive() {
 889        try {
 890            final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 891
 892            final boolean isScreenOn;
 893            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
 894                isScreenOn = pm.isScreenOn();
 895            } else {
 896                isScreenOn = pm.isInteractive();
 897            }
 898            return isScreenOn;
 899        } catch (RuntimeException e) {
 900            return false;
 901        }
 902    }
 903
 904    private boolean isPhoneSilenced() {
 905        final boolean notificationDnd;
 906        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 907            final NotificationManager notificationManager = getSystemService(NotificationManager.class);
 908            final int filter = notificationManager == null ? NotificationManager.INTERRUPTION_FILTER_UNKNOWN : notificationManager.getCurrentInterruptionFilter();
 909            notificationDnd = filter >= NotificationManager.INTERRUPTION_FILTER_PRIORITY;
 910        } else {
 911            notificationDnd = false;
 912        }
 913        final AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
 914        final int ringerMode = audioManager == null ? AudioManager.RINGER_MODE_NORMAL : audioManager.getRingerMode();
 915        try {
 916            if (treatVibrateAsSilent()) {
 917                return notificationDnd || ringerMode != AudioManager.RINGER_MODE_NORMAL;
 918            } else {
 919                return notificationDnd || ringerMode == AudioManager.RINGER_MODE_SILENT;
 920            }
 921        } catch (Throwable throwable) {
 922            Log.d(Config.LOGTAG, "platform bug in isPhoneSilenced (" + throwable.getMessage() + ")");
 923            return notificationDnd;
 924        }
 925    }
 926
 927    private void resetAllAttemptCounts(boolean reallyAll, boolean retryImmediately) {
 928        Log.d(Config.LOGTAG, "resetting all attempt counts");
 929        for (Account account : accounts) {
 930            if (account.hasErrorStatus() || reallyAll) {
 931                final XmppConnection connection = account.getXmppConnection();
 932                if (connection != null) {
 933                    connection.resetAttemptCount(retryImmediately);
 934                }
 935            }
 936            if (account.setShowErrorNotification(true)) {
 937                mDatabaseWriterExecutor.execute(() -> databaseBackend.updateAccount(account));
 938            }
 939        }
 940        mNotificationService.updateErrorNotification();
 941    }
 942
 943    private void dismissErrorNotifications() {
 944        for (final Account account : this.accounts) {
 945            if (account.hasErrorStatus()) {
 946                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": dismissing error notification");
 947                if (account.setShowErrorNotification(false)) {
 948                    mDatabaseWriterExecutor.execute(() -> databaseBackend.updateAccount(account));
 949                }
 950            }
 951        }
 952    }
 953
 954    private void expireOldMessages() {
 955        expireOldMessages(false);
 956    }
 957
 958    public void expireOldMessages(final boolean resetHasMessagesLeftOnServer) {
 959        mLastExpiryRun.set(SystemClock.elapsedRealtime());
 960        mDatabaseWriterExecutor.execute(() -> {
 961            long timestamp = getAutomaticMessageDeletionDate();
 962            if (timestamp > 0) {
 963                databaseBackend.expireOldMessages(timestamp);
 964                synchronized (XmppConnectionService.this.conversations) {
 965                    for (Conversation conversation : XmppConnectionService.this.conversations) {
 966                        conversation.expireOldMessages(timestamp);
 967                        if (resetHasMessagesLeftOnServer) {
 968                            conversation.messagesLoaded.set(true);
 969                            conversation.setHasMessagesLeftOnServer(true);
 970                        }
 971                    }
 972                }
 973                updateConversationUi();
 974            }
 975        });
 976    }
 977
 978    public boolean hasInternetConnection() {
 979        final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 980        try {
 981            final NetworkInfo activeNetwork = cm == null ? null : cm.getActiveNetworkInfo();
 982            return activeNetwork != null && (activeNetwork.isConnected() || activeNetwork.getType() == ConnectivityManager.TYPE_ETHERNET);
 983        } catch (RuntimeException e) {
 984            Log.d(Config.LOGTAG, "unable to check for internet connection", e);
 985            return true; //if internet connection can not be checked it is probably best to just try
 986        }
 987    }
 988
 989    @SuppressLint("TrulyRandom")
 990    @Override
 991    public void onCreate() {
 992        if (Compatibility.runsTwentySix()) {
 993            mNotificationService.initializeChannels();
 994        }
 995        mForceDuringOnCreate.set(Compatibility.runsAndTargetsTwentySix(this));
 996        toggleForegroundService();
 997        this.destroyed = false;
 998        OmemoSetting.load(this);
 999        ExceptionHelper.init(getApplicationContext());
1000        try {
1001            Security.insertProviderAt(Conscrypt.newProvider(), 1);
1002        } catch (Throwable throwable) {
1003            Log.e(Config.LOGTAG,"unable to initialize security provider", throwable);
1004        }
1005        Resolver.init(this);
1006        this.mRandom = new SecureRandom();
1007        updateMemorizingTrustmanager();
1008        final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
1009        final int cacheSize = maxMemory / 8;
1010        this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
1011            @Override
1012            protected int sizeOf(final String key, final Bitmap bitmap) {
1013                return bitmap.getByteCount() / 1024;
1014            }
1015        };
1016        if (mLastActivity == 0) {
1017            mLastActivity = getPreferences().getLong(SETTING_LAST_ACTIVITY_TS, System.currentTimeMillis());
1018        }
1019
1020        Log.d(Config.LOGTAG, "initializing database...");
1021        this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
1022        Log.d(Config.LOGTAG, "restoring accounts...");
1023        this.accounts = databaseBackend.getAccounts();
1024        final SharedPreferences.Editor editor = getPreferences().edit();
1025        if (this.accounts.size() == 0 && Arrays.asList("Sony", "Sony Ericsson").contains(Build.MANUFACTURER)) {
1026            editor.putBoolean(SettingsActivity.KEEP_FOREGROUND_SERVICE, true);
1027            Log.d(Config.LOGTAG, Build.MANUFACTURER + " is on blacklist. enabling foreground service");
1028        }
1029        final boolean hasEnabledAccounts = hasEnabledAccounts();
1030        editor.putBoolean(EventReceiver.SETTING_ENABLED_ACCOUNTS, hasEnabledAccounts).apply();
1031        editor.apply();
1032        toggleSetProfilePictureActivity(hasEnabledAccounts);
1033
1034        restoreFromDatabase();
1035
1036        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
1037            startContactObserver();
1038        }
1039        if (Compatibility.hasStoragePermission(this)) {
1040            Log.d(Config.LOGTAG, "starting file observer");
1041            mFileAddingExecutor.execute(this.fileObserver::startWatching);
1042            mFileAddingExecutor.execute(this::checkForDeletedFiles);
1043        }
1044        if (Config.supportOpenPgp()) {
1045            this.pgpServiceConnection = new OpenPgpServiceConnection(this, "org.sufficientlysecure.keychain", new OpenPgpServiceConnection.OnBound() {
1046                @Override
1047                public void onBound(IOpenPgpService2 service) {
1048                    for (Account account : accounts) {
1049                        final PgpDecryptionService pgp = account.getPgpDecryptionService();
1050                        if (pgp != null) {
1051                            pgp.continueDecryption(true);
1052                        }
1053                    }
1054                }
1055
1056                @Override
1057                public void onError(Exception e) {
1058                }
1059            });
1060            this.pgpServiceConnection.bindToService();
1061        }
1062
1063        this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
1064        this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Conversations:Service");
1065
1066        toggleForegroundService();
1067        updateUnreadCountBadge();
1068        toggleScreenEventReceiver();
1069        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1070            scheduleNextIdlePing();
1071            IntentFilter intentFilter = new IntentFilter();
1072            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
1073                intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
1074            }
1075            intentFilter.addAction(NotificationManager.ACTION_INTERRUPTION_FILTER_CHANGED);
1076            registerReceiver(this.mInternalEventReceiver, intentFilter);
1077        }
1078        mForceDuringOnCreate.set(false);
1079        toggleForegroundService();
1080    }
1081
1082    private void checkForDeletedFiles() {
1083        if (destroyed) {
1084            Log.d(Config.LOGTAG, "Do not check for deleted files because service has been destroyed");
1085            return;
1086        }
1087        final long start = SystemClock.elapsedRealtime();
1088        final List<DatabaseBackend.FilePathInfo> relativeFilePaths = databaseBackend.getFilePathInfo();
1089        final List<DatabaseBackend.FilePathInfo> changed = new ArrayList<>();
1090        for(final DatabaseBackend.FilePathInfo filePath : relativeFilePaths) {
1091            if (destroyed) {
1092                Log.d(Config.LOGTAG, "Stop checking for deleted files because service has been destroyed");
1093                return;
1094            }
1095            final File file = fileBackend.getFileForPath(filePath.path);
1096            if (filePath.setDeleted(!file.exists())) {
1097                changed.add(filePath);
1098            }
1099        }
1100        final long duration = SystemClock.elapsedRealtime() - start;
1101        Log.d(Config.LOGTAG,"found "+changed.size()+" changed files on start up. total="+relativeFilePaths.size()+". ("+duration+"ms)");
1102        if (changed.size() > 0) {
1103            databaseBackend.markFilesAsChanged(changed);
1104            markChangedFiles(changed);
1105        }
1106    }
1107
1108    public void startContactObserver() {
1109        getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, new ContentObserver(null) {
1110            @Override
1111            public void onChange(boolean selfChange) {
1112                super.onChange(selfChange);
1113                if (restoredFromDatabaseLatch.getCount() == 0) {
1114                    loadPhoneContacts();
1115                }
1116            }
1117        });
1118    }
1119
1120    @Override
1121    public void onTrimMemory(int level) {
1122        super.onTrimMemory(level);
1123        if (level >= TRIM_MEMORY_COMPLETE) {
1124            Log.d(Config.LOGTAG, "clear cache due to low memory");
1125            getBitmapCache().evictAll();
1126        }
1127    }
1128
1129    @Override
1130    public void onDestroy() {
1131        try {
1132            unregisterReceiver(this.mInternalEventReceiver);
1133        } catch (IllegalArgumentException e) {
1134            //ignored
1135        }
1136        destroyed = false;
1137        fileObserver.stopWatching();
1138        super.onDestroy();
1139    }
1140
1141    public void restartFileObserver() {
1142        Log.d(Config.LOGTAG, "restarting file observer");
1143        mFileAddingExecutor.execute(this.fileObserver::restartWatching);
1144        mFileAddingExecutor.execute(this::checkForDeletedFiles);
1145    }
1146
1147    public void toggleScreenEventReceiver() {
1148        if (awayWhenScreenOff() && !manuallyChangePresence()) {
1149            final IntentFilter filter = new IntentFilter();
1150            filter.addAction(Intent.ACTION_SCREEN_ON);
1151            filter.addAction(Intent.ACTION_SCREEN_OFF);
1152            registerReceiver(this.mInternalScreenEventReceiver, filter);
1153        } else {
1154            try {
1155                unregisterReceiver(this.mInternalScreenEventReceiver);
1156            } catch (IllegalArgumentException e) {
1157                //ignored
1158            }
1159        }
1160    }
1161
1162    public void toggleForegroundService() {
1163        toggleForegroundService(false);
1164    }
1165
1166    private void toggleForegroundService(boolean force) {
1167        final boolean status;
1168        if (force || mForceDuringOnCreate.get() || mForceForegroundService.get() || (Compatibility.keepForegroundService(this) && hasEnabledAccounts())) {
1169            final Notification notification = this.mNotificationService.createForegroundNotification();
1170            startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, notification);
1171            if (!mForceForegroundService.get()) {
1172                mNotificationService.notify(NotificationService.FOREGROUND_NOTIFICATION_ID, notification);
1173            }
1174            status = true;
1175        } else {
1176            stopForeground(true);
1177            status = false;
1178        }
1179        if (!mForceForegroundService.get()) {
1180            mNotificationService.dismissForcedForegroundNotification(); //if the channel was changed the previous call might fail
1181        }
1182        Log.d(Config.LOGTAG,"ForegroundService: "+(status?"on":"off"));
1183    }
1184
1185    public boolean foregroundNotificationNeedsUpdatingWhenErrorStateChanges() {
1186        return !mForceForegroundService.get() && Compatibility.keepForegroundService(this) && hasEnabledAccounts();
1187    }
1188
1189    @Override
1190    public void onTaskRemoved(final Intent rootIntent) {
1191        super.onTaskRemoved(rootIntent);
1192        if ((Compatibility.keepForegroundService(this) && hasEnabledAccounts()) || mForceForegroundService.get()) {
1193            Log.d(Config.LOGTAG, "ignoring onTaskRemoved because foreground service is activated");
1194        } else {
1195            this.logoutAndSave(false);
1196        }
1197    }
1198
1199    private void logoutAndSave(boolean stop) {
1200        int activeAccounts = 0;
1201        for (final Account account : accounts) {
1202            if (account.getStatus() != Account.State.DISABLED) {
1203                databaseBackend.writeRoster(account.getRoster());
1204                activeAccounts++;
1205            }
1206            if (account.getXmppConnection() != null) {
1207                new Thread(() -> disconnect(account, false)).start();
1208            }
1209        }
1210        if (stop || activeAccounts == 0) {
1211            Log.d(Config.LOGTAG, "good bye");
1212            stopSelf();
1213        }
1214    }
1215
1216    private void schedulePostConnectivityChange() {
1217        final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
1218        if (alarmManager == null) {
1219            return;
1220        }
1221        final long triggerAtMillis = SystemClock.elapsedRealtime() + (Config.POST_CONNECTIVITY_CHANGE_PING_INTERVAL * 1000);
1222        final Intent intent = new Intent(this, EventReceiver.class);
1223        intent.setAction(ACTION_POST_CONNECTIVITY_CHANGE);
1224        try {
1225            final PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intent, 0);
1226            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1227                alarmManager.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtMillis, pendingIntent);
1228            } else {
1229                alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtMillis, pendingIntent);
1230            }
1231        } catch (RuntimeException e) {
1232            Log.e(Config.LOGTAG, "unable to schedule alarm for post connectivity change", e);
1233        }
1234    }
1235
1236    public void scheduleWakeUpCall(int seconds, int requestCode) {
1237        final long timeToWake = SystemClock.elapsedRealtime() + (seconds < 0 ? 1 : seconds + 1) * 1000;
1238        final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
1239        if (alarmManager == null) {
1240            return;
1241        }
1242        final Intent intent = new Intent(this, EventReceiver.class);
1243        intent.setAction("ping");
1244        try {
1245            PendingIntent pendingIntent = PendingIntent.getBroadcast(this, requestCode, intent, 0);
1246            alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake, pendingIntent);
1247        } catch (RuntimeException e) {
1248            Log.e(Config.LOGTAG, "unable to schedule alarm for ping", e);
1249        }
1250    }
1251
1252    @TargetApi(Build.VERSION_CODES.M)
1253    private void scheduleNextIdlePing() {
1254        final long timeToWake = SystemClock.elapsedRealtime() + (Config.IDLE_PING_INTERVAL * 1000);
1255        final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
1256        if (alarmManager == null) {
1257            return;
1258        }
1259        final Intent intent = new Intent(this, EventReceiver.class);
1260        intent.setAction(ACTION_IDLE_PING);
1261        try {
1262            PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
1263            alarmManager.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake, pendingIntent);
1264        } catch (RuntimeException e) {
1265            Log.d(Config.LOGTAG, "unable to schedule alarm for idle ping", e);
1266        }
1267    }
1268
1269    public XmppConnection createConnection(final Account account) {
1270        final XmppConnection connection = new XmppConnection(account, this);
1271        connection.setOnMessagePacketReceivedListener(this.mMessageParser);
1272        connection.setOnStatusChangedListener(this.statusListener);
1273        connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
1274        connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
1275        connection.setOnJinglePacketReceivedListener(this.jingleListener);
1276        connection.setOnBindListener(this.mOnBindListener);
1277        connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
1278        connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
1279        connection.addOnAdvancedStreamFeaturesAvailableListener(this.mAvatarService);
1280        AxolotlService axolotlService = account.getAxolotlService();
1281        if (axolotlService != null) {
1282            connection.addOnAdvancedStreamFeaturesAvailableListener(axolotlService);
1283        }
1284        return connection;
1285    }
1286
1287    public void sendChatState(Conversation conversation) {
1288        if (sendChatStates()) {
1289            MessagePacket packet = mMessageGenerator.generateChatState(conversation);
1290            sendMessagePacket(conversation.getAccount(), packet);
1291        }
1292    }
1293
1294    private void sendFileMessage(final Message message, final boolean delay) {
1295        Log.d(Config.LOGTAG, "send file message");
1296        final Account account = message.getConversation().getAccount();
1297        if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1298                || message.getConversation().getMode() == Conversation.MODE_MULTI) {
1299            mHttpConnectionManager.createNewUploadConnection(message, delay);
1300        } else {
1301            mJingleConnectionManager.createNewConnection(message);
1302        }
1303    }
1304
1305    public void sendMessage(final Message message) {
1306        sendMessage(message, false, false);
1307    }
1308
1309    private void sendMessage(final Message message, final boolean resend, final boolean delay) {
1310        final Account account = message.getConversation().getAccount();
1311        if (account.setShowErrorNotification(true)) {
1312            databaseBackend.updateAccount(account);
1313            mNotificationService.updateErrorNotification();
1314        }
1315        final Conversation conversation = (Conversation) message.getConversation();
1316        account.deactivateGracePeriod();
1317
1318
1319        if (QuickConversationsService.isQuicksy() && conversation.getMode() == Conversation.MODE_SINGLE) {
1320            final Contact contact = conversation.getContact();
1321            if (!contact.showInRoster() && contact.getOption(Contact.Options.SYNCED_VIA_OTHER)) {
1322                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": adding "+contact.getJid()+" on sending message");
1323                createContact(contact, true);
1324            }
1325        }
1326
1327        MessagePacket packet = null;
1328        final boolean addToConversation = (conversation.getMode() != Conversation.MODE_MULTI
1329                || !Patches.BAD_MUC_REFLECTION.contains(account.getServerIdentity()))
1330                && !message.edited();
1331        boolean saveInDb = addToConversation;
1332        message.setStatus(Message.STATUS_WAITING);
1333
1334        if (message.getEncryption() != Message.ENCRYPTION_NONE && conversation.getMode() == Conversation.MODE_MULTI && conversation.isPrivateAndNonAnonymous()) {
1335            if (conversation.setAttribute(Conversation.ATTRIBUTE_FORMERLY_PRIVATE_NON_ANONYMOUS, true)) {
1336                databaseBackend.updateConversation(conversation);
1337            }
1338        }
1339
1340        if (account.isOnlineAndConnected()) {
1341            switch (message.getEncryption()) {
1342                case Message.ENCRYPTION_NONE:
1343                    if (message.needsUploading()) {
1344                        if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1345                                || conversation.getMode() == Conversation.MODE_MULTI
1346                                || message.fixCounterpart()) {
1347                            this.sendFileMessage(message, delay);
1348                        } else {
1349                            break;
1350                        }
1351                    } else {
1352                        packet = mMessageGenerator.generateChat(message);
1353                    }
1354                    break;
1355                case Message.ENCRYPTION_PGP:
1356                case Message.ENCRYPTION_DECRYPTED:
1357                    if (message.needsUploading()) {
1358                        if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1359                                || conversation.getMode() == Conversation.MODE_MULTI
1360                                || message.fixCounterpart()) {
1361                            this.sendFileMessage(message, delay);
1362                        } else {
1363                            break;
1364                        }
1365                    } else {
1366                        packet = mMessageGenerator.generatePgpChat(message);
1367                    }
1368                    break;
1369                case Message.ENCRYPTION_AXOLOTL:
1370                    message.setFingerprint(account.getAxolotlService().getOwnFingerprint());
1371                    if (message.needsUploading()) {
1372                        if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1373                                || conversation.getMode() == Conversation.MODE_MULTI
1374                                || message.fixCounterpart()) {
1375                            this.sendFileMessage(message, delay);
1376                        } else {
1377                            break;
1378                        }
1379                    } else {
1380                        XmppAxolotlMessage axolotlMessage = account.getAxolotlService().fetchAxolotlMessageFromCache(message);
1381                        if (axolotlMessage == null) {
1382                            account.getAxolotlService().preparePayloadMessage(message, delay);
1383                        } else {
1384                            packet = mMessageGenerator.generateAxolotlChat(message, axolotlMessage);
1385                        }
1386                    }
1387                    break;
1388
1389            }
1390            if (packet != null) {
1391                if (account.getXmppConnection().getFeatures().sm()
1392                        || (conversation.getMode() == Conversation.MODE_MULTI && message.getCounterpart().isBareJid())) {
1393                    message.setStatus(Message.STATUS_UNSEND);
1394                } else {
1395                    message.setStatus(Message.STATUS_SEND);
1396                }
1397            }
1398        } else {
1399            switch (message.getEncryption()) {
1400                case Message.ENCRYPTION_DECRYPTED:
1401                    if (!message.needsUploading()) {
1402                        String pgpBody = message.getEncryptedBody();
1403                        String decryptedBody = message.getBody();
1404                        message.setBody(pgpBody); //TODO might throw NPE
1405                        message.setEncryption(Message.ENCRYPTION_PGP);
1406                        if (message.edited()) {
1407                            message.setBody(decryptedBody);
1408                            message.setEncryption(Message.ENCRYPTION_DECRYPTED);
1409                            if (!databaseBackend.updateMessage(message, message.getEditedId())) {
1410                                Log.e(Config.LOGTAG,"error updated message in DB after edit");
1411                            }
1412                            updateConversationUi();
1413                            return;
1414                        } else {
1415                            databaseBackend.createMessage(message);
1416                            saveInDb = false;
1417                            message.setBody(decryptedBody);
1418                            message.setEncryption(Message.ENCRYPTION_DECRYPTED);
1419                        }
1420                    }
1421                    break;
1422                case Message.ENCRYPTION_AXOLOTL:
1423                    message.setFingerprint(account.getAxolotlService().getOwnFingerprint());
1424                    break;
1425            }
1426        }
1427
1428
1429        boolean mucMessage = conversation.getMode() == Conversation.MODE_MULTI && message.getType() != Message.TYPE_PRIVATE;
1430        if (mucMessage) {
1431            message.setCounterpart(conversation.getMucOptions().getSelf().getFullJid());
1432        }
1433
1434        if (resend) {
1435            if (packet != null && addToConversation) {
1436                if (account.getXmppConnection().getFeatures().sm() || mucMessage) {
1437                    markMessage(message, Message.STATUS_UNSEND);
1438                } else {
1439                    markMessage(message, Message.STATUS_SEND);
1440                }
1441            }
1442        } else {
1443            if (addToConversation) {
1444                conversation.add(message);
1445            }
1446            if (saveInDb) {
1447                databaseBackend.createMessage(message);
1448            } else if (message.edited()) {
1449                if (!databaseBackend.updateMessage(message, message.getEditedId())) {
1450                    Log.e(Config.LOGTAG,"error updated message in DB after edit");
1451                }
1452            }
1453            updateConversationUi();
1454        }
1455        if (packet != null) {
1456            if (delay) {
1457                mMessageGenerator.addDelay(packet, message.getTimeSent());
1458            }
1459            if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1460                if (this.sendChatStates()) {
1461                    packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
1462                }
1463            }
1464            sendMessagePacket(account, packet);
1465        }
1466    }
1467
1468    private void sendUnsentMessages(final Conversation conversation) {
1469        conversation.findWaitingMessages(message -> resendMessage(message, true));
1470    }
1471
1472    public void resendMessage(final Message message, final boolean delay) {
1473        sendMessage(message, true, delay);
1474    }
1475
1476    public void fetchRosterFromServer(final Account account) {
1477        final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
1478        if (!"".equals(account.getRosterVersion())) {
1479            Log.d(Config.LOGTAG, account.getJid().asBareJid()
1480                    + ": fetching roster version " + account.getRosterVersion());
1481        } else {
1482            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching roster");
1483        }
1484        iqPacket.query(Namespace.ROSTER).setAttribute("ver", account.getRosterVersion());
1485        sendIqPacket(account, iqPacket, mIqParser);
1486    }
1487
1488    public void fetchBookmarks(final Account account) {
1489        final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
1490        final Element query = iqPacket.query("jabber:iq:private");
1491        query.addChild("storage", Namespace.BOOKMARKS);
1492        final OnIqPacketReceived callback = (a, response) -> {
1493            if (response.getType() == IqPacket.TYPE.RESULT) {
1494                final Element query1 = response.query();
1495                final Element storage = query1.findChild("storage", "storage:bookmarks");
1496                processBookmarks(a, storage, false);
1497            } else {
1498                Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": could not fetch bookmarks");
1499            }
1500        };
1501        sendIqPacket(account, iqPacket, callback);
1502    }
1503
1504    public void processBookmarks(Account account, Element storage, final boolean pep) {
1505        final Set<Jid> previousBookmarks = account.getBookmarkedJids();
1506        final HashMap<Jid, Bookmark> bookmarks = new HashMap<>();
1507        final boolean synchronizeWithBookmarks = synchronizeWithBookmarks();
1508        if (storage != null) {
1509            for (final Element item : storage.getChildren()) {
1510                if (item.getName().equals("conference")) {
1511                    final Bookmark bookmark = Bookmark.parse(item, account);
1512                    Bookmark old = bookmarks.put(bookmark.getJid(), bookmark);
1513                    if (old != null && old.getBookmarkName() != null && bookmark.getBookmarkName() == null) {
1514                        bookmark.setBookmarkName(old.getBookmarkName());
1515                    }
1516                    if (bookmark.getJid() == null) {
1517                        continue;
1518                    }
1519                    previousBookmarks.remove(bookmark.getJid().asBareJid());
1520                    Conversation conversation = find(bookmark);
1521                    if (conversation != null) {
1522                        if (conversation.getMode() != Conversation.MODE_MULTI) {
1523                            continue;
1524                        }
1525                        bookmark.setConversation(conversation);
1526                        if (pep && synchronizeWithBookmarks && !bookmark.autojoin()) {
1527                            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": archiving conference ("+conversation.getJid()+") after receiving pep");
1528                            archiveConversation(conversation, false);
1529                        }
1530                    } else if (synchronizeWithBookmarks && bookmark.autojoin()) {
1531                        conversation = findOrCreateConversation(account, bookmark.getFullJid(), true, true, false);
1532                        bookmark.setConversation(conversation);
1533                    }
1534                }
1535            }
1536            if (pep && synchronizeWithBookmarks) {
1537                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + previousBookmarks.size() + " bookmarks have been removed");
1538                for (Jid jid : previousBookmarks) {
1539                    final Conversation conversation = find(account, jid);
1540                    if (conversation != null && conversation.getMucOptions().getError() == MucOptions.Error.DESTROYED) {
1541                        Log.d(Config.LOGTAG,account.getJid().asBareJid()+": archiving destroyed conference ("+conversation.getJid()+") after receiving pep");
1542                        archiveConversation(conversation, false);
1543                    }
1544                }
1545            }
1546        }
1547        account.setBookmarks(new CopyOnWriteArrayList<>(bookmarks.values()));
1548    }
1549
1550    public void pushBookmarks(Account account) {
1551        if (account.getXmppConnection().getFeatures().bookmarksConversion()) {
1552            pushBookmarksPep(account);
1553        } else {
1554            pushBookmarksPrivateXml(account);
1555        }
1556    }
1557
1558    private void pushBookmarksPrivateXml(Account account) {
1559        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": pushing bookmarks via private xml");
1560        IqPacket iqPacket = new IqPacket(IqPacket.TYPE.SET);
1561        Element query = iqPacket.query("jabber:iq:private");
1562        Element storage = query.addChild("storage", "storage:bookmarks");
1563        for (Bookmark bookmark : account.getBookmarks()) {
1564            storage.addChild(bookmark);
1565        }
1566        sendIqPacket(account, iqPacket, mDefaultIqHandler);
1567    }
1568
1569    private void pushBookmarksPep(Account account) {
1570        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": pushing bookmarks via pep");
1571        Element storage = new Element("storage", "storage:bookmarks");
1572        for (Bookmark bookmark : account.getBookmarks()) {
1573            storage.addChild(bookmark);
1574        }
1575        pushNodeAndEnforcePublishOptions(account,Namespace.BOOKMARKS,storage, PublishOptions.persistentWhitelistAccess());
1576
1577    }
1578
1579
1580    private void pushNodeAndEnforcePublishOptions(final Account account, final String node, final Element element, final Bundle options) {
1581        pushNodeAndEnforcePublishOptions(account, node, element, options, true);
1582
1583    }
1584
1585	private void pushNodeAndEnforcePublishOptions(final Account account, final String node, final Element element, final Bundle options, final boolean retry) {
1586        final IqPacket packet = mIqGenerator.publishElement(node, element, options);
1587        sendIqPacket(account, packet, (a, response) -> {
1588            if (response.getType() == IqPacket.TYPE.RESULT) {
1589                return;
1590            }
1591            if (retry && PublishOptions.preconditionNotMet(response)) {
1592                pushNodeConfiguration(account, node, options, new OnConfigurationPushed() {
1593                    @Override
1594                    public void onPushSucceeded() {
1595                        pushNodeAndEnforcePublishOptions(account, node, element, options, false);
1596                    }
1597
1598                    @Override
1599                    public void onPushFailed() {
1600                        Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to push node configuration ("+node+")");
1601                    }
1602                });
1603            } else {
1604                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": error publishing bookmarks (retry="+Boolean.toString(retry)+") "+response);
1605            }
1606        });
1607    }
1608
1609	private void restoreFromDatabase() {
1610		synchronized (this.conversations) {
1611			final Map<String, Account> accountLookupTable = new Hashtable<>();
1612			for (Account account : this.accounts) {
1613				accountLookupTable.put(account.getUuid(), account);
1614			}
1615			Log.d(Config.LOGTAG, "restoring conversations...");
1616			final long startTimeConversationsRestore = SystemClock.elapsedRealtime();
1617			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
1618			for (Iterator<Conversation> iterator = conversations.listIterator(); iterator.hasNext(); ) {
1619				Conversation conversation = iterator.next();
1620				Account account = accountLookupTable.get(conversation.getAccountUuid());
1621				if (account != null) {
1622					conversation.setAccount(account);
1623				} else {
1624					Log.e(Config.LOGTAG, "unable to restore Conversations with " + conversation.getJid());
1625					iterator.remove();
1626				}
1627			}
1628			long diffConversationsRestore = SystemClock.elapsedRealtime() - startTimeConversationsRestore;
1629			Log.d(Config.LOGTAG, "finished restoring conversations in " + diffConversationsRestore + "ms");
1630			Runnable runnable = () -> {
1631				long deletionDate = getAutomaticMessageDeletionDate();
1632				mLastExpiryRun.set(SystemClock.elapsedRealtime());
1633				if (deletionDate > 0) {
1634					Log.d(Config.LOGTAG, "deleting messages that are older than " + AbstractGenerator.getTimestamp(deletionDate));
1635					databaseBackend.expireOldMessages(deletionDate);
1636				}
1637				Log.d(Config.LOGTAG, "restoring roster...");
1638				for (Account account : accounts) {
1639					databaseBackend.readRoster(account.getRoster());
1640					account.initAccountServices(XmppConnectionService.this); //roster needs to be loaded at this stage
1641				}
1642				getBitmapCache().evictAll();
1643				loadPhoneContacts();
1644				Log.d(Config.LOGTAG, "restoring messages...");
1645				final long startMessageRestore = SystemClock.elapsedRealtime();
1646				final Conversation quickLoad = QuickLoader.get(this.conversations);
1647				if (quickLoad != null) {
1648					restoreMessages(quickLoad);
1649					updateConversationUi();
1650					final long diffMessageRestore = SystemClock.elapsedRealtime() - startMessageRestore;
1651					Log.d(Config.LOGTAG,"quickly restored "+quickLoad.getName()+" after " + diffMessageRestore + "ms");
1652				}
1653				for (Conversation conversation : this.conversations) {
1654					if (quickLoad != conversation) {
1655						restoreMessages(conversation);
1656					}
1657				}
1658				mNotificationService.finishBacklog(false);
1659				restoredFromDatabaseLatch.countDown();
1660				final long diffMessageRestore = SystemClock.elapsedRealtime() - startMessageRestore;
1661				Log.d(Config.LOGTAG, "finished restoring messages in " + diffMessageRestore + "ms");
1662				updateConversationUi();
1663			};
1664			mDatabaseReaderExecutor.execute(runnable); //will contain one write command (expiry) but that's fine
1665		}
1666	}
1667
1668	private void restoreMessages(Conversation conversation) {
1669		conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1670		conversation.findUnsentTextMessages(message -> markMessage(message, Message.STATUS_WAITING));
1671		conversation.findUnreadMessages(message -> mNotificationService.pushFromBacklog(message));
1672	}
1673
1674	public void loadPhoneContacts() {
1675        mContactMergerExecutor.execute(() -> {
1676            Map<Jid, JabberIdContact> contacts = JabberIdContact.load(this);
1677            Log.d(Config.LOGTAG, "start merging phone contacts with roster");
1678            for (Account account : accounts) {
1679                List<Contact> withSystemAccounts = account.getRoster().getWithSystemAccounts(JabberIdContact.class);
1680                for (JabberIdContact jidContact : contacts.values()) {
1681                    final Contact contact = account.getRoster().getContact(jidContact.getJid());
1682                    boolean needsCacheClean = contact.setPhoneContact(jidContact);
1683                    if (needsCacheClean) {
1684                        getAvatarService().clear(contact);
1685                    }
1686                    withSystemAccounts.remove(contact);
1687                }
1688                for (Contact contact : withSystemAccounts) {
1689                    boolean needsCacheClean = contact.unsetPhoneContact(JabberIdContact.class);
1690                    if (needsCacheClean) {
1691                        getAvatarService().clear(contact);
1692                    }
1693                }
1694            }
1695            Log.d(Config.LOGTAG, "finished merging phone contacts");
1696            mShortcutService.refresh(mInitialAddressbookSyncCompleted.compareAndSet(false, true));
1697            updateRosterUi();
1698            mQuickConversationsService.considerSync();
1699        });
1700	}
1701
1702
1703	public void syncRoster(final Account account) {
1704		mRosterSyncTaskManager.execute(account, () -> databaseBackend.writeRoster(account.getRoster()));
1705	}
1706
1707	public List<Conversation> getConversations() {
1708		return this.conversations;
1709	}
1710
1711	private void markFileDeleted(final String path) {
1712        final File file = new File(path);
1713        final boolean isInternalFile = fileBackend.isInternalFile(file);
1714        final List<String> uuids = databaseBackend.markFileAsDeleted(file, isInternalFile);
1715        Log.d(Config.LOGTAG, "deleted file " + path+" internal="+isInternalFile+", database hits="+uuids.size());
1716        markUuidsAsDeletedFiles(uuids);
1717	}
1718
1719	private void markUuidsAsDeletedFiles(List<String> uuids) {
1720        boolean deleted = false;
1721        for (Conversation conversation : getConversations()) {
1722            deleted |= conversation.markAsDeleted(uuids);
1723        }
1724        if (deleted) {
1725            updateConversationUi();
1726        }
1727    }
1728
1729    private void markChangedFiles(List<DatabaseBackend.FilePathInfo> infos) {
1730        boolean changed = false;
1731        for (Conversation conversation : getConversations()) {
1732            changed |= conversation.markAsChanged(infos);
1733        }
1734        if (changed) {
1735            updateConversationUi();
1736        }
1737    }
1738
1739	public void populateWithOrderedConversations(final List<Conversation> list) {
1740		populateWithOrderedConversations(list, true, true);
1741	}
1742
1743	public void populateWithOrderedConversations(final List<Conversation> list, final boolean includeNoFileUpload) {
1744        populateWithOrderedConversations(list, includeNoFileUpload, true);
1745    }
1746
1747	public void populateWithOrderedConversations(final List<Conversation> list, final boolean includeNoFileUpload, final boolean sort) {
1748        final List<String> orderedUuids;
1749        if (sort) {
1750            orderedUuids = null;
1751        } else {
1752            orderedUuids = new ArrayList<>();
1753            for(Conversation conversation : list) {
1754                orderedUuids.add(conversation.getUuid());
1755            }
1756        }
1757		list.clear();
1758		if (includeNoFileUpload) {
1759			list.addAll(getConversations());
1760		} else {
1761			for (Conversation conversation : getConversations()) {
1762				if (conversation.getMode() == Conversation.MODE_SINGLE
1763						|| (conversation.getAccount().httpUploadAvailable() && conversation.getMucOptions().participating())) {
1764					list.add(conversation);
1765				}
1766			}
1767		}
1768		try {
1769		    if (orderedUuids != null) {
1770                Collections.sort(list, (a, b) -> {
1771                    final int indexA = orderedUuids.indexOf(a.getUuid());
1772                    final int indexB = orderedUuids.indexOf(b.getUuid());
1773                    if (indexA == -1 || indexB == -1 || indexA == indexB) {
1774                        return a.compareTo(b);
1775                    }
1776                    return indexA - indexB;
1777                });
1778            } else {
1779                Collections.sort(list);
1780            }
1781		} catch (IllegalArgumentException e) {
1782			//ignore
1783		}
1784	}
1785
1786	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
1787		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation, callback)) {
1788			return;
1789		} else if (timestamp == 0) {
1790			return;
1791		}
1792		Log.d(Config.LOGTAG, "load more messages for " + conversation.getName() + " prior to " + MessageGenerator.getTimestamp(timestamp));
1793		final Runnable runnable = () -> {
1794			final Account account = conversation.getAccount();
1795			List<Message> messages = databaseBackend.getMessages(conversation, 50, timestamp);
1796			if (messages.size() > 0) {
1797				conversation.addAll(0, messages);
1798				callback.onMoreMessagesLoaded(messages.size(), conversation);
1799			} else if (conversation.hasMessagesLeftOnServer()
1800					&& account.isOnlineAndConnected()
1801					&& conversation.getLastClearHistory().getTimestamp() == 0) {
1802				final boolean mamAvailable;
1803				if (conversation.getMode() == Conversation.MODE_SINGLE) {
1804					mamAvailable = account.getXmppConnection().getFeatures().mam() && !conversation.getContact().isBlocked();
1805				} else {
1806					mamAvailable = conversation.getMucOptions().mamSupport();
1807				}
1808				if (mamAvailable) {
1809					MessageArchiveService.Query query = getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
1810					if (query != null) {
1811						query.setCallback(callback);
1812						callback.informUser(R.string.fetching_history_from_server);
1813					} else {
1814						callback.informUser(R.string.not_fetching_history_retention_period);
1815					}
1816
1817				}
1818			}
1819		};
1820		mDatabaseReaderExecutor.execute(runnable);
1821	}
1822
1823	public List<Account> getAccounts() {
1824		return this.accounts;
1825	}
1826
1827
1828    /**
1829     * This will find all conferences with the contact as member and also the conference that is the contact (that 'fake' contact is used to store the avatar)
1830     */
1831	public List<Conversation> findAllConferencesWith(Contact contact) {
1832		ArrayList<Conversation> results = new ArrayList<>();
1833		for (final Conversation c : conversations) {
1834			if (c.getMode() == Conversation.MODE_MULTI && (c.getJid().asBareJid().equals(contact.getJid().asBareJid()) || c.getMucOptions().isContactInRoom(contact))) {
1835			    results.add(c);
1836			}
1837		}
1838		return results;
1839	}
1840
1841	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
1842		for (final Conversation conversation : haystack) {
1843			if (conversation.getContact() == contact) {
1844				return conversation;
1845			}
1846		}
1847		return null;
1848	}
1849
1850	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1851		if (jid == null) {
1852			return null;
1853		}
1854		for (final Conversation conversation : haystack) {
1855			if ((account == null || conversation.getAccount() == account)
1856					&& (conversation.getJid().asBareJid().equals(jid.asBareJid()))) {
1857				return conversation;
1858			}
1859		}
1860		return null;
1861	}
1862
1863	public boolean isConversationsListEmpty(final Conversation ignore) {
1864		synchronized (this.conversations) {
1865			final int size = this.conversations.size();
1866			return size == 0 || size == 1 && this.conversations.get(0) == ignore;
1867		}
1868	}
1869
1870	public boolean isConversationStillOpen(final Conversation conversation) {
1871		synchronized (this.conversations) {
1872			for (Conversation current : this.conversations) {
1873				if (current == conversation) {
1874					return true;
1875				}
1876			}
1877		}
1878		return false;
1879	}
1880
1881	public Conversation findOrCreateConversation(Account account, Jid jid, boolean muc, final boolean async) {
1882		return this.findOrCreateConversation(account, jid, muc, false, async);
1883	}
1884
1885	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final boolean joinAfterCreate, final boolean async) {
1886		return this.findOrCreateConversation(account, jid, muc, joinAfterCreate, null, async);
1887	}
1888
1889	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final boolean joinAfterCreate, final MessageArchiveService.Query query, final boolean async) {
1890		synchronized (this.conversations) {
1891			Conversation conversation = find(account, jid);
1892			if (conversation != null) {
1893				return conversation;
1894			}
1895			conversation = databaseBackend.findConversation(account, jid);
1896			final boolean loadMessagesFromDb;
1897			if (conversation != null) {
1898				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1899				conversation.setAccount(account);
1900				if (muc) {
1901					conversation.setMode(Conversation.MODE_MULTI);
1902					conversation.setContactJid(jid);
1903				} else {
1904					conversation.setMode(Conversation.MODE_SINGLE);
1905					conversation.setContactJid(jid.asBareJid());
1906				}
1907				databaseBackend.updateConversation(conversation);
1908				loadMessagesFromDb = conversation.messagesLoaded.compareAndSet(true, false);
1909			} else {
1910				String conversationName;
1911				Contact contact = account.getRoster().getContact(jid);
1912				if (contact != null) {
1913					conversationName = contact.getDisplayName();
1914				} else {
1915					conversationName = jid.getLocal();
1916				}
1917				if (muc) {
1918					conversation = new Conversation(conversationName, account, jid,
1919							Conversation.MODE_MULTI);
1920				} else {
1921					conversation = new Conversation(conversationName, account, jid.asBareJid(),
1922							Conversation.MODE_SINGLE);
1923				}
1924				this.databaseBackend.createConversation(conversation);
1925				loadMessagesFromDb = false;
1926			}
1927			final Conversation c = conversation;
1928			final Runnable runnable = () -> {
1929				if (loadMessagesFromDb) {
1930					c.addAll(0, databaseBackend.getMessages(c, Config.PAGE_SIZE));
1931					updateConversationUi();
1932					c.messagesLoaded.set(true);
1933				}
1934				if (account.getXmppConnection() != null
1935						&& !c.getContact().isBlocked()
1936						&& account.getXmppConnection().getFeatures().mam()
1937						&& !muc) {
1938					if (query == null) {
1939						mMessageArchiveService.query(c);
1940					} else {
1941						if (query.getConversation() == null) {
1942							mMessageArchiveService.query(c, query.getStart(), query.isCatchup());
1943						}
1944					}
1945				}
1946				if (joinAfterCreate) {
1947					joinMuc(c);
1948				}
1949			};
1950			if (async) {
1951				mDatabaseReaderExecutor.execute(runnable);
1952			} else {
1953				runnable.run();
1954			}
1955			this.conversations.add(conversation);
1956			updateConversationUi();
1957			return conversation;
1958		}
1959	}
1960
1961	public void archiveConversation(Conversation conversation) {
1962	    archiveConversation(conversation, true);
1963    }
1964
1965	private void archiveConversation(Conversation conversation, final boolean maySyncronizeWithBookmarks) {
1966		getNotificationService().clear(conversation);
1967		conversation.setStatus(Conversation.STATUS_ARCHIVED);
1968		conversation.setNextMessage(null);
1969		synchronized (this.conversations) {
1970			getMessageArchiveService().kill(conversation);
1971			if (conversation.getMode() == Conversation.MODE_MULTI) {
1972				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1973					Bookmark bookmark = conversation.getBookmark();
1974					if (maySyncronizeWithBookmarks && bookmark != null && synchronizeWithBookmarks()) {
1975						if (conversation.getMucOptions().getError() == MucOptions.Error.DESTROYED) {
1976							Account account = bookmark.getAccount();
1977							bookmark.setConversation(null);
1978							account.getBookmarks().remove(bookmark);
1979							pushBookmarks(account);
1980						} else if (bookmark.autojoin()) {
1981							bookmark.setAutojoin(false);
1982							pushBookmarks(bookmark.getAccount());
1983						}
1984					}
1985				}
1986				leaveMuc(conversation);
1987			} else {
1988				if (conversation.getContact().getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1989				    stopPresenceUpdatesTo(conversation.getContact());
1990				}
1991			}
1992			updateConversation(conversation);
1993			this.conversations.remove(conversation);
1994			updateConversationUi();
1995		}
1996	}
1997
1998	public void stopPresenceUpdatesTo(Contact contact) {
1999        Log.d(Config.LOGTAG, "Canceling presence request from " + contact.getJid().toString());
2000        sendPresencePacket(contact.getAccount(), mPresenceGenerator.stopPresenceUpdatesTo(contact));
2001        contact.resetOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2002    }
2003
2004	public void createAccount(final Account account) {
2005		account.initAccountServices(this);
2006		databaseBackend.createAccount(account);
2007		this.accounts.add(account);
2008		this.reconnectAccountInBackground(account);
2009		updateAccountUi();
2010		syncEnabledAccountSetting();
2011		toggleForegroundService();
2012	}
2013
2014	private void syncEnabledAccountSetting() {
2015	    final boolean hasEnabledAccounts = hasEnabledAccounts();
2016		getPreferences().edit().putBoolean(EventReceiver.SETTING_ENABLED_ACCOUNTS, hasEnabledAccounts).apply();
2017		toggleSetProfilePictureActivity(hasEnabledAccounts);
2018	}
2019
2020	private void toggleSetProfilePictureActivity(final boolean enabled) {
2021	    try {
2022	        final ComponentName name = new ComponentName(this, ChooseAccountForProfilePictureActivity.class);
2023	        final int targetState =  enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
2024            getPackageManager().setComponentEnabledSetting(name, targetState, PackageManager.DONT_KILL_APP);
2025        } catch (IllegalStateException e) {
2026	        Log.d(Config.LOGTAG,"unable to toggle profile picture actvitiy");
2027        }
2028    }
2029
2030	public void createAccountFromKey(final String alias, final OnAccountCreated callback) {
2031		new Thread(() -> {
2032			try {
2033				final X509Certificate[] chain = KeyChain.getCertificateChain(this, alias);
2034				final X509Certificate cert = chain != null && chain.length > 0 ? chain[0] : null;
2035				if (cert == null) {
2036					callback.informUser(R.string.unable_to_parse_certificate);
2037					return;
2038				}
2039				Pair<Jid, String> info = CryptoHelper.extractJidAndName(cert);
2040				if (info == null) {
2041					callback.informUser(R.string.certificate_does_not_contain_jid);
2042					return;
2043				}
2044				if (findAccountByJid(info.first) == null) {
2045					Account account = new Account(info.first, "");
2046					account.setPrivateKeyAlias(alias);
2047					account.setOption(Account.OPTION_DISABLED, true);
2048					account.setDisplayName(info.second);
2049					createAccount(account);
2050					callback.onAccountCreated(account);
2051					if (Config.X509_VERIFICATION) {
2052						try {
2053							getMemorizingTrustManager().getNonInteractive(account.getJid().getDomain()).checkClientTrusted(chain, "RSA");
2054						} catch (CertificateException e) {
2055							callback.informUser(R.string.certificate_chain_is_not_trusted);
2056						}
2057					}
2058				} else {
2059					callback.informUser(R.string.account_already_exists);
2060				}
2061			} catch (Exception e) {
2062				e.printStackTrace();
2063				callback.informUser(R.string.unable_to_parse_certificate);
2064			}
2065		}).start();
2066
2067	}
2068
2069	public void updateKeyInAccount(final Account account, final String alias) {
2070		Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": update key in account " + alias);
2071		try {
2072			X509Certificate[] chain = KeyChain.getCertificateChain(XmppConnectionService.this, alias);
2073			Log.d(Config.LOGTAG, account.getJid().asBareJid() + " loaded certificate chain");
2074			Pair<Jid, String> info = CryptoHelper.extractJidAndName(chain[0]);
2075			if (info == null) {
2076				showErrorToastInUi(R.string.certificate_does_not_contain_jid);
2077				return;
2078			}
2079			if (account.getJid().asBareJid().equals(info.first)) {
2080				account.setPrivateKeyAlias(alias);
2081				account.setDisplayName(info.second);
2082				databaseBackend.updateAccount(account);
2083				if (Config.X509_VERIFICATION) {
2084					try {
2085						getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
2086					} catch (CertificateException e) {
2087						showErrorToastInUi(R.string.certificate_chain_is_not_trusted);
2088					}
2089					account.getAxolotlService().regenerateKeys(true);
2090				}
2091			} else {
2092				showErrorToastInUi(R.string.jid_does_not_match_certificate);
2093			}
2094		} catch (Exception e) {
2095			e.printStackTrace();
2096		}
2097	}
2098
2099	public boolean updateAccount(final Account account) {
2100		if (databaseBackend.updateAccount(account)) {
2101			account.setShowErrorNotification(true);
2102			this.statusListener.onStatusChanged(account);
2103			databaseBackend.updateAccount(account);
2104			reconnectAccountInBackground(account);
2105			updateAccountUi();
2106			getNotificationService().updateErrorNotification();
2107			toggleForegroundService();
2108			syncEnabledAccountSetting();
2109			return true;
2110		} else {
2111			return false;
2112		}
2113	}
2114
2115	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
2116		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
2117		sendIqPacket(account, iq, (a, packet) -> {
2118			if (packet.getType() == IqPacket.TYPE.RESULT) {
2119				a.setPassword(newPassword);
2120				a.setOption(Account.OPTION_MAGIC_CREATE, false);
2121				databaseBackend.updateAccount(a);
2122				callback.onPasswordChangeSucceeded();
2123			} else {
2124				callback.onPasswordChangeFailed();
2125			}
2126		});
2127	}
2128
2129	public void deleteAccount(final Account account) {
2130		synchronized (this.conversations) {
2131			for (final Conversation conversation : conversations) {
2132				if (conversation.getAccount() == account) {
2133					if (conversation.getMode() == Conversation.MODE_MULTI) {
2134						leaveMuc(conversation);
2135					}
2136					conversations.remove(conversation);
2137				}
2138			}
2139			if (account.getXmppConnection() != null) {
2140				new Thread(() -> disconnect(account, true)).start();
2141			}
2142			final Runnable runnable = () -> {
2143				if (!databaseBackend.deleteAccount(account)) {
2144					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to delete account");
2145				}
2146			};
2147			mDatabaseWriterExecutor.execute(runnable);
2148			this.accounts.remove(account);
2149			this.mRosterSyncTaskManager.clear(account);
2150			updateAccountUi();
2151			getNotificationService().updateErrorNotification();
2152			syncEnabledAccountSetting();
2153			toggleForegroundService();
2154		}
2155	}
2156
2157	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
2158		final boolean remainingListeners;
2159		synchronized (LISTENER_LOCK) {
2160			remainingListeners = checkListeners();
2161			if (!this.mOnConversationUpdates.add(listener)) {
2162				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as ConversationListChangedListener");
2163			}
2164			this.mNotificationService.setIsInForeground(this.mOnConversationUpdates.size() > 0);
2165		}
2166		if (remainingListeners) {
2167			switchToForeground();
2168		}
2169	}
2170
2171	public void removeOnConversationListChangedListener(OnConversationUpdate listener) {
2172		final boolean remainingListeners;
2173		synchronized (LISTENER_LOCK) {
2174			this.mOnConversationUpdates.remove(listener);
2175			this.mNotificationService.setIsInForeground(this.mOnConversationUpdates.size() > 0);
2176			remainingListeners = checkListeners();
2177		}
2178		if (remainingListeners) {
2179			switchToBackground();
2180		}
2181	}
2182
2183	public void setOnShowErrorToastListener(OnShowErrorToast listener) {
2184		final boolean remainingListeners;
2185		synchronized (LISTENER_LOCK) {
2186			remainingListeners = checkListeners();
2187			if (!this.mOnShowErrorToasts.add(listener)) {
2188				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnShowErrorToastListener");
2189			}
2190		}
2191		if (remainingListeners) {
2192			switchToForeground();
2193		}
2194	}
2195
2196	public void removeOnShowErrorToastListener(OnShowErrorToast onShowErrorToast) {
2197		final boolean remainingListeners;
2198		synchronized (LISTENER_LOCK) {
2199			this.mOnShowErrorToasts.remove(onShowErrorToast);
2200			remainingListeners = checkListeners();
2201		}
2202		if (remainingListeners) {
2203			switchToBackground();
2204		}
2205	}
2206
2207	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
2208		final boolean remainingListeners;
2209		synchronized (LISTENER_LOCK) {
2210			remainingListeners = checkListeners();
2211			if (!this.mOnAccountUpdates.add(listener)) {
2212				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnAccountListChangedtListener");
2213			}
2214		}
2215		if (remainingListeners) {
2216			switchToForeground();
2217		}
2218	}
2219
2220	public void removeOnAccountListChangedListener(OnAccountUpdate listener) {
2221		final boolean remainingListeners;
2222		synchronized (LISTENER_LOCK) {
2223			this.mOnAccountUpdates.remove(listener);
2224			remainingListeners = checkListeners();
2225		}
2226		if (remainingListeners) {
2227			switchToBackground();
2228		}
2229	}
2230
2231	public void setOnCaptchaRequestedListener(OnCaptchaRequested listener) {
2232		final boolean remainingListeners;
2233		synchronized (LISTENER_LOCK) {
2234			remainingListeners = checkListeners();
2235			if (!this.mOnCaptchaRequested.add(listener)) {
2236				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnCaptchaRequestListener");
2237			}
2238		}
2239		if (remainingListeners) {
2240			switchToForeground();
2241		}
2242	}
2243
2244	public void removeOnCaptchaRequestedListener(OnCaptchaRequested listener) {
2245		final boolean remainingListeners;
2246		synchronized (LISTENER_LOCK) {
2247			this.mOnCaptchaRequested.remove(listener);
2248			remainingListeners = checkListeners();
2249		}
2250		if (remainingListeners) {
2251			switchToBackground();
2252		}
2253	}
2254
2255	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
2256		final boolean remainingListeners;
2257		synchronized (LISTENER_LOCK) {
2258			remainingListeners = checkListeners();
2259			if (!this.mOnRosterUpdates.add(listener)) {
2260				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnRosterUpdateListener");
2261			}
2262		}
2263		if (remainingListeners) {
2264			switchToForeground();
2265		}
2266	}
2267
2268	public void removeOnRosterUpdateListener(final OnRosterUpdate listener) {
2269		final boolean remainingListeners;
2270		synchronized (LISTENER_LOCK) {
2271			this.mOnRosterUpdates.remove(listener);
2272			remainingListeners = checkListeners();
2273		}
2274		if (remainingListeners) {
2275			switchToBackground();
2276		}
2277	}
2278
2279	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
2280		final boolean remainingListeners;
2281		synchronized (LISTENER_LOCK) {
2282			remainingListeners = checkListeners();
2283			if (!this.mOnUpdateBlocklist.add(listener)) {
2284				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnUpdateBlocklistListener");
2285			}
2286		}
2287		if (remainingListeners) {
2288			switchToForeground();
2289		}
2290	}
2291
2292	public void removeOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
2293		final boolean remainingListeners;
2294		synchronized (LISTENER_LOCK) {
2295			this.mOnUpdateBlocklist.remove(listener);
2296			remainingListeners = checkListeners();
2297		}
2298		if (remainingListeners) {
2299			switchToBackground();
2300		}
2301	}
2302
2303	public void setOnKeyStatusUpdatedListener(final OnKeyStatusUpdated listener) {
2304		final boolean remainingListeners;
2305		synchronized (LISTENER_LOCK) {
2306			remainingListeners = checkListeners();
2307			if (!this.mOnKeyStatusUpdated.add(listener)) {
2308				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnKeyStatusUpdateListener");
2309			}
2310		}
2311		if (remainingListeners) {
2312			switchToForeground();
2313		}
2314	}
2315
2316	public void removeOnNewKeysAvailableListener(final OnKeyStatusUpdated listener) {
2317		final boolean remainingListeners;
2318		synchronized (LISTENER_LOCK) {
2319			this.mOnKeyStatusUpdated.remove(listener);
2320			remainingListeners = checkListeners();
2321		}
2322		if (remainingListeners) {
2323			switchToBackground();
2324		}
2325	}
2326
2327	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
2328		final boolean remainingListeners;
2329		synchronized (LISTENER_LOCK) {
2330			remainingListeners = checkListeners();
2331			if (!this.mOnMucRosterUpdate.add(listener)) {
2332				Log.w(Config.LOGTAG,listener.getClass().getName()+" is already registered as OnMucRosterListener");
2333			}
2334		}
2335		if (remainingListeners) {
2336			switchToForeground();
2337		}
2338	}
2339
2340	public void removeOnMucRosterUpdateListener(final OnMucRosterUpdate listener) {
2341		final boolean remainingListeners;
2342		synchronized (LISTENER_LOCK) {
2343			this.mOnMucRosterUpdate.remove(listener);
2344			remainingListeners = checkListeners();
2345		}
2346		if (remainingListeners) {
2347			switchToBackground();
2348		}
2349	}
2350
2351	public boolean checkListeners() {
2352		return (this.mOnAccountUpdates.size() == 0
2353				&& this.mOnConversationUpdates.size() == 0
2354				&& this.mOnRosterUpdates.size() == 0
2355				&& this.mOnCaptchaRequested.size() == 0
2356				&& this.mOnMucRosterUpdate.size() == 0
2357				&& this.mOnUpdateBlocklist.size() == 0
2358				&& this.mOnShowErrorToasts.size() == 0
2359				&& this.mOnKeyStatusUpdated.size() == 0);
2360	}
2361
2362	private void switchToForeground() {
2363		final boolean broadcastLastActivity = broadcastLastActivity();
2364		for (Conversation conversation : getConversations()) {
2365			if (conversation.getMode() == Conversation.MODE_MULTI) {
2366				conversation.getMucOptions().resetChatState();
2367			} else {
2368				conversation.setIncomingChatState(Config.DEFAULT_CHATSTATE);
2369			}
2370		}
2371		for (Account account : getAccounts()) {
2372			if (account.getStatus() == Account.State.ONLINE) {
2373				account.deactivateGracePeriod();
2374				final XmppConnection connection = account.getXmppConnection();
2375				if (connection != null) {
2376					if (connection.getFeatures().csi()) {
2377						connection.sendActive();
2378					}
2379					if (broadcastLastActivity) {
2380						sendPresence(account, false); //send new presence but don't include idle because we are not
2381					}
2382				}
2383			}
2384		}
2385		Log.d(Config.LOGTAG, "app switched into foreground");
2386	}
2387
2388	private void switchToBackground() {
2389		final boolean broadcastLastActivity = broadcastLastActivity();
2390		if (broadcastLastActivity) {
2391			mLastActivity = System.currentTimeMillis();
2392			final SharedPreferences.Editor editor = getPreferences().edit();
2393			editor.putLong(SETTING_LAST_ACTIVITY_TS, mLastActivity);
2394			editor.apply();
2395		}
2396		for (Account account : getAccounts()) {
2397			if (account.getStatus() == Account.State.ONLINE) {
2398				XmppConnection connection = account.getXmppConnection();
2399				if (connection != null) {
2400					if (broadcastLastActivity) {
2401						sendPresence(account, true);
2402					}
2403					if (connection.getFeatures().csi()) {
2404						connection.sendInactive();
2405					}
2406				}
2407			}
2408		}
2409		this.mNotificationService.setIsInForeground(false);
2410		Log.d(Config.LOGTAG, "app switched into background");
2411	}
2412
2413	private void connectMultiModeConversations(Account account) {
2414		List<Conversation> conversations = getConversations();
2415		for (Conversation conversation : conversations) {
2416			if (conversation.getMode() == Conversation.MODE_MULTI && conversation.getAccount() == account) {
2417				joinMuc(conversation);
2418			}
2419		}
2420	}
2421
2422	public void joinMuc(Conversation conversation) {
2423		joinMuc(conversation, null, false);
2424	}
2425
2426	public void joinMuc(Conversation conversation, boolean followedInvite) {
2427		joinMuc(conversation, null, followedInvite);
2428	}
2429
2430	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined) {
2431		joinMuc(conversation, onConferenceJoined, false);
2432	}
2433
2434	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined, final boolean followedInvite) {
2435		Account account = conversation.getAccount();
2436		account.pendingConferenceJoins.remove(conversation);
2437		account.pendingConferenceLeaves.remove(conversation);
2438		if (account.getStatus() == Account.State.ONLINE) {
2439			sendPresencePacket(account, mPresenceGenerator.leave(conversation.getMucOptions()));
2440			conversation.resetMucOptions();
2441			if (onConferenceJoined != null) {
2442				conversation.getMucOptions().flagNoAutoPushConfiguration();
2443			}
2444			conversation.setHasMessagesLeftOnServer(false);
2445			fetchConferenceConfiguration(conversation, new OnConferenceConfigurationFetched() {
2446
2447				private void join(Conversation conversation) {
2448					Account account = conversation.getAccount();
2449					final MucOptions mucOptions = conversation.getMucOptions();
2450
2451					if (mucOptions.nonanonymous() && !mucOptions.membersOnly() && !conversation.getBooleanAttribute("accept_non_anonymous", false)) {
2452					    mucOptions.setError(MucOptions.Error.NON_ANONYMOUS);
2453					    updateConversationUi();
2454                        if (onConferenceJoined != null) {
2455                            onConferenceJoined.onConferenceJoined(conversation);
2456                        }
2457					    return;
2458                    }
2459
2460					final Jid joinJid = mucOptions.getSelf().getFullJid();
2461					Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": joining conversation " + joinJid.toString());
2462					PresencePacket packet = mPresenceGenerator.selfPresence(account, Presence.Status.ONLINE, mucOptions.nonanonymous() || onConferenceJoined != null);
2463					packet.setTo(joinJid);
2464					Element x = packet.addChild("x", "http://jabber.org/protocol/muc");
2465					if (conversation.getMucOptions().getPassword() != null) {
2466						x.addChild("password").setContent(mucOptions.getPassword());
2467					}
2468
2469					if (mucOptions.mamSupport()) {
2470						// Use MAM instead of the limited muc history to get history
2471						x.addChild("history").setAttribute("maxchars", "0");
2472					} else {
2473						// Fallback to muc history
2474						x.addChild("history").setAttribute("since", PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted().getTimestamp()));
2475					}
2476					sendPresencePacket(account, packet);
2477					if (onConferenceJoined != null) {
2478						onConferenceJoined.onConferenceJoined(conversation);
2479					}
2480					if (!joinJid.equals(conversation.getJid())) {
2481						conversation.setContactJid(joinJid);
2482						databaseBackend.updateConversation(conversation);
2483					}
2484
2485					if (mucOptions.mamSupport()) {
2486						getMessageArchiveService().catchupMUC(conversation);
2487					}
2488					if (mucOptions.isPrivateAndNonAnonymous()) {
2489						fetchConferenceMembers(conversation);
2490						if (followedInvite && conversation.getBookmark() == null) {
2491							saveConversationAsBookmark(conversation, null);
2492						}
2493					}
2494					sendUnsentMessages(conversation);
2495				}
2496
2497				@Override
2498				public void onConferenceConfigurationFetched(Conversation conversation) {
2499				    if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2500				        Log.d(Config.LOGTAG,account.getJid().asBareJid()+": conversation ("+conversation.getJid()+") got archived before IQ result");
2501				        return;
2502                    }
2503					join(conversation);
2504				}
2505
2506				@Override
2507				public void onFetchFailed(final Conversation conversation, Element error) {
2508                    if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2509                        Log.d(Config.LOGTAG,account.getJid().asBareJid()+": conversation ("+conversation.getJid()+") got archived before IQ result");
2510                        return;
2511                    }
2512					if (error != null && "remote-server-not-found".equals(error.getName())) {
2513						conversation.getMucOptions().setError(MucOptions.Error.SERVER_NOT_FOUND);
2514						updateConversationUi();
2515					} else {
2516						join(conversation);
2517						fetchConferenceConfiguration(conversation);
2518					}
2519				}
2520			});
2521			updateConversationUi();
2522		} else {
2523			account.pendingConferenceJoins.add(conversation);
2524			conversation.resetMucOptions();
2525			conversation.setHasMessagesLeftOnServer(false);
2526			updateConversationUi();
2527		}
2528	}
2529
2530	private void fetchConferenceMembers(final Conversation conversation) {
2531		final Account account = conversation.getAccount();
2532		final AxolotlService axolotlService = account.getAxolotlService();
2533		final String[] affiliations = {"member", "admin", "owner"};
2534		OnIqPacketReceived callback = new OnIqPacketReceived() {
2535
2536			private int i = 0;
2537			private boolean success = true;
2538
2539			@Override
2540			public void onIqPacketReceived(Account account, IqPacket packet) {
2541				final boolean omemoEnabled = conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL;
2542				Element query = packet.query("http://jabber.org/protocol/muc#admin");
2543				if (packet.getType() == IqPacket.TYPE.RESULT && query != null) {
2544					for (Element child : query.getChildren()) {
2545						if ("item".equals(child.getName())) {
2546							MucOptions.User user = AbstractParser.parseItem(conversation, child);
2547							if (!user.realJidMatchesAccount()) {
2548								boolean isNew = conversation.getMucOptions().updateUser(user);
2549								Contact contact = user.getContact();
2550								if (omemoEnabled
2551										&& isNew
2552										&& user.getRealJid() != null
2553										&& (contact == null || !contact.mutualPresenceSubscription())
2554										&& axolotlService.hasEmptyDeviceList(user.getRealJid())) {
2555									axolotlService.fetchDeviceIds(user.getRealJid());
2556								}
2557							}
2558						}
2559					}
2560				} else {
2561					success = false;
2562					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not request affiliation " + affiliations[i] + " in " + conversation.getJid().asBareJid());
2563				}
2564				++i;
2565				if (i >= affiliations.length) {
2566					List<Jid> members = conversation.getMucOptions().getMembers(true);
2567					if (success) {
2568						List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
2569						boolean changed = false;
2570						for (ListIterator<Jid> iterator = cryptoTargets.listIterator(); iterator.hasNext(); ) {
2571							Jid jid = iterator.next();
2572							if (!members.contains(jid) && !members.contains(Jid.ofDomain(jid.getDomain()))) {
2573								iterator.remove();
2574								Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
2575								changed = true;
2576							}
2577						}
2578						if (changed) {
2579							conversation.setAcceptedCryptoTargets(cryptoTargets);
2580							updateConversation(conversation);
2581						}
2582					}
2583					getAvatarService().clear(conversation);
2584					updateMucRosterUi();
2585					updateConversationUi();
2586				}
2587			}
2588		};
2589		for (String affiliation : affiliations) {
2590			sendIqPacket(account, mIqGenerator.queryAffiliation(conversation, affiliation), callback);
2591		}
2592		Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching members for " + conversation.getName());
2593	}
2594
2595	public void providePasswordForMuc(Conversation conversation, String password) {
2596		if (conversation.getMode() == Conversation.MODE_MULTI) {
2597			conversation.getMucOptions().setPassword(password);
2598			if (conversation.getBookmark() != null) {
2599				if (synchronizeWithBookmarks()) {
2600					conversation.getBookmark().setAutojoin(true);
2601				}
2602				pushBookmarks(conversation.getAccount());
2603			}
2604			updateConversation(conversation);
2605			joinMuc(conversation);
2606		}
2607	}
2608
2609	private boolean hasEnabledAccounts() {
2610	    if (this.accounts == null) {
2611	        return false;
2612	    }
2613	    for (Account account : this.accounts) {
2614	        if (account.isEnabled()) {
2615	            return true;
2616	        }
2617	    }
2618	    return false;
2619	}
2620
2621
2622	public void getAttachments(final Conversation conversation, int limit, final OnMediaLoaded onMediaLoaded) {
2623        getAttachments(conversation.getAccount(), conversation.getJid().asBareJid(), limit, onMediaLoaded);
2624    }
2625
2626    public void getAttachments(final Account account, final Jid jid, final int limit, final OnMediaLoaded onMediaLoaded) {
2627        getAttachments(account.getUuid(),jid.asBareJid(),limit, onMediaLoaded);
2628    }
2629
2630
2631	public void getAttachments(final String account, final Jid jid, final int limit, final OnMediaLoaded onMediaLoaded) {
2632        new Thread(() -> onMediaLoaded.onMediaLoaded(fileBackend.convertToAttachments(databaseBackend.getRelativeFilePaths(account, jid, limit)))).start();
2633    }
2634
2635	public void persistSelfNick(MucOptions.User self) {
2636		final Conversation conversation = self.getConversation();
2637		final boolean tookProposedNickFromBookmark = conversation.getMucOptions().isTookProposedNickFromBookmark();
2638		Jid full = self.getFullJid();
2639		if (!full.equals(conversation.getJid())) {
2640			Log.d(Config.LOGTAG, "nick changed. updating");
2641			conversation.setContactJid(full);
2642			databaseBackend.updateConversation(conversation);
2643		}
2644
2645		final Bookmark bookmark = conversation.getBookmark();
2646		final String bookmarkedNick = bookmark == null ? null : bookmark.getNick();
2647        if (bookmark != null && (tookProposedNickFromBookmark || TextUtils.isEmpty(bookmarkedNick)) && !full.getResource().equals(bookmarkedNick)) {
2648            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": persist nick '" + full.getResource() + "' into bookmark for " + conversation.getJid().asBareJid());
2649            bookmark.setNick(full.getResource());
2650            pushBookmarks(bookmark.getAccount());
2651        }
2652	}
2653
2654	public boolean renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
2655		final MucOptions options = conversation.getMucOptions();
2656		final Jid joinJid = options.createJoinJid(nick);
2657		if (joinJid == null) {
2658			return false;
2659		}
2660		if (options.online()) {
2661			Account account = conversation.getAccount();
2662			options.setOnRenameListener(new OnRenameListener() {
2663
2664				@Override
2665				public void onSuccess() {
2666					callback.success(conversation);
2667				}
2668
2669				@Override
2670				public void onFailure() {
2671					callback.error(R.string.nick_in_use, conversation);
2672				}
2673			});
2674
2675			PresencePacket packet = new PresencePacket();
2676			packet.setTo(joinJid);
2677			packet.setFrom(conversation.getAccount().getJid());
2678
2679			String sig = account.getPgpSignature();
2680			if (sig != null) {
2681				packet.addChild("status").setContent("online");
2682				packet.addChild("x", "jabber:x:signed").setContent(sig);
2683			}
2684			sendPresencePacket(account, packet);
2685		} else {
2686			conversation.setContactJid(joinJid);
2687			databaseBackend.updateConversation(conversation);
2688			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
2689				Bookmark bookmark = conversation.getBookmark();
2690				if (bookmark != null) {
2691					bookmark.setNick(nick);
2692					pushBookmarks(bookmark.getAccount());
2693				}
2694				joinMuc(conversation);
2695			}
2696		}
2697		return true;
2698	}
2699
2700	public void leaveMuc(Conversation conversation) {
2701		leaveMuc(conversation, false);
2702	}
2703
2704	private void leaveMuc(Conversation conversation, boolean now) {
2705		Account account = conversation.getAccount();
2706		account.pendingConferenceJoins.remove(conversation);
2707		account.pendingConferenceLeaves.remove(conversation);
2708		if (account.getStatus() == Account.State.ONLINE || now) {
2709			sendPresencePacket(conversation.getAccount(), mPresenceGenerator.leave(conversation.getMucOptions()));
2710			conversation.getMucOptions().setOffline();
2711			Bookmark bookmark = conversation.getBookmark();
2712			if (bookmark != null) {
2713				bookmark.setConversation(null);
2714			}
2715			Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": leaving muc " + conversation.getJid());
2716		} else {
2717			account.pendingConferenceLeaves.add(conversation);
2718		}
2719	}
2720
2721	public String findConferenceServer(final Account account) {
2722		String server;
2723		if (account.getXmppConnection() != null) {
2724			server = account.getXmppConnection().getMucServer();
2725			if (server != null) {
2726				return server;
2727			}
2728		}
2729		for (Account other : getAccounts()) {
2730			if (other != account && other.getXmppConnection() != null) {
2731				server = other.getXmppConnection().getMucServer();
2732				if (server != null) {
2733					return server;
2734				}
2735			}
2736		}
2737		return null;
2738	}
2739
2740
2741	public void createPublicChannel(final Account account, final String name, final Jid address, final UiCallback<Conversation> callback) {
2742        joinMuc(findOrCreateConversation(account, address, true, false, true), conversation -> {
2743            final Bundle configuration = IqGenerator.defaultChannelConfiguration();
2744            if (!TextUtils.isEmpty(name)) {
2745                configuration.putString("muc#roomconfig_roomname", name);
2746            }
2747            pushConferenceConfiguration(conversation, configuration, new OnConfigurationPushed() {
2748                @Override
2749                public void onPushSucceeded() {
2750                    saveConversationAsBookmark(conversation, name);
2751                    callback.success(conversation);
2752                }
2753
2754                @Override
2755                public void onPushFailed() {
2756                    if (conversation.getMucOptions().getSelf().getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
2757                        callback.error(R.string.unable_to_set_channel_configuration, conversation);
2758                    } else {
2759                        callback.error(R.string.joined_an_existing_channel, conversation);
2760                    }
2761                }
2762            });
2763        });
2764    }
2765
2766	public boolean createAdhocConference(final Account account,
2767	                                     final String name,
2768	                                     final Iterable<Jid> jids,
2769	                                     final UiCallback<Conversation> callback) {
2770		Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": creating adhoc conference with " + jids.toString());
2771		if (account.getStatus() == Account.State.ONLINE) {
2772			try {
2773				String server = findConferenceServer(account);
2774				if (server == null) {
2775					if (callback != null) {
2776						callback.error(R.string.no_conference_server_found, null);
2777					}
2778					return false;
2779				}
2780				final Jid jid = Jid.of(CryptoHelper.pronounceable(getRNG()), server, null);
2781				final Conversation conversation = findOrCreateConversation(account, jid, true, false, true);
2782				joinMuc(conversation, new OnConferenceJoined() {
2783					@Override
2784					public void onConferenceJoined(final Conversation conversation) {
2785						final Bundle configuration = IqGenerator.defaultGroupChatConfiguration();
2786						if (!TextUtils.isEmpty(name)) {
2787							configuration.putString("muc#roomconfig_roomname", name);
2788						}
2789						pushConferenceConfiguration(conversation, configuration, new OnConfigurationPushed() {
2790							@Override
2791							public void onPushSucceeded() {
2792								for (Jid invite : jids) {
2793									invite(conversation, invite);
2794								}
2795								if (account.countPresences() > 1) {
2796									directInvite(conversation, account.getJid().asBareJid());
2797								}
2798								saveConversationAsBookmark(conversation, name);
2799								if (callback != null) {
2800									callback.success(conversation);
2801								}
2802							}
2803
2804							@Override
2805							public void onPushFailed() {
2806								archiveConversation(conversation);
2807								if (callback != null) {
2808									callback.error(R.string.conference_creation_failed, conversation);
2809								}
2810							}
2811						});
2812					}
2813				});
2814				return true;
2815			} catch (IllegalArgumentException e) {
2816				if (callback != null) {
2817					callback.error(R.string.conference_creation_failed, null);
2818				}
2819				return false;
2820			}
2821		} else {
2822			if (callback != null) {
2823				callback.error(R.string.not_connected_try_again, null);
2824			}
2825			return false;
2826		}
2827	}
2828
2829	public void fetchConferenceConfiguration(final Conversation conversation) {
2830		fetchConferenceConfiguration(conversation, null);
2831	}
2832
2833	public void fetchConferenceConfiguration(final Conversation conversation, final OnConferenceConfigurationFetched callback) {
2834		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2835		request.setTo(conversation.getJid().asBareJid());
2836		request.query("http://jabber.org/protocol/disco#info");
2837		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2838			@Override
2839			public void onIqPacketReceived(Account account, IqPacket packet) {
2840				if (packet.getType() == IqPacket.TYPE.RESULT) {
2841
2842					final MucOptions mucOptions = conversation.getMucOptions();
2843					final Bookmark bookmark = conversation.getBookmark();
2844					final boolean sameBefore = StringUtils.equals(bookmark == null ? null : bookmark.getBookmarkName(), mucOptions.getName());
2845
2846					if (mucOptions.updateConfiguration(new ServiceDiscoveryResult(packet))) {
2847						Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": muc configuration changed for " + conversation.getJid().asBareJid());
2848						updateConversation(conversation);
2849					}
2850
2851					if (bookmark != null && (sameBefore || bookmark.getBookmarkName() == null)) {
2852						if (bookmark.setBookmarkName(StringUtils.nullOnEmpty(mucOptions.getName()))) {
2853							pushBookmarks(account);
2854						}
2855					}
2856
2857
2858					if (callback != null) {
2859						callback.onConferenceConfigurationFetched(conversation);
2860					}
2861
2862
2863
2864					updateConversationUi();
2865				} else if (packet.getType() == IqPacket.TYPE.ERROR) {
2866					if (callback != null) {
2867						callback.onFetchFailed(conversation, packet.getError());
2868					}
2869				}
2870			}
2871		});
2872	}
2873
2874	public void pushNodeConfiguration(Account account, final String node, final Bundle options, final OnConfigurationPushed callback) {
2875		pushNodeConfiguration(account, account.getJid().asBareJid(), node, options, callback);
2876	}
2877
2878	public void pushNodeConfiguration(Account account, final Jid jid, final String node, final Bundle options, final OnConfigurationPushed callback) {
2879        Log.d(Config.LOGTAG,"pushing node configuration");
2880		sendIqPacket(account, mIqGenerator.requestPubsubConfiguration(jid, node), new OnIqPacketReceived() {
2881			@Override
2882			public void onIqPacketReceived(Account account, IqPacket packet) {
2883				if (packet.getType() == IqPacket.TYPE.RESULT) {
2884					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub#owner");
2885					Element configuration = pubsub == null ? null : pubsub.findChild("configure");
2886					Element x = configuration == null ? null : configuration.findChild("x", Namespace.DATA);
2887					if (x != null) {
2888						Data data = Data.parse(x);
2889						data.submit(options);
2890						sendIqPacket(account, mIqGenerator.publishPubsubConfiguration(jid, node, data), new OnIqPacketReceived() {
2891							@Override
2892							public void onIqPacketReceived(Account account, IqPacket packet) {
2893								if (packet.getType() == IqPacket.TYPE.RESULT && callback != null) {
2894									Log.d(Config.LOGTAG,account.getJid().asBareJid()+": successfully changed node configuration for node "+node);
2895									callback.onPushSucceeded();
2896								} else if (packet.getType() == IqPacket.TYPE.ERROR && callback != null) {
2897									callback.onPushFailed();
2898								}
2899							}
2900						});
2901					} else if (callback != null) {
2902						callback.onPushFailed();
2903					}
2904				} else if (packet.getType() == IqPacket.TYPE.ERROR && callback != null) {
2905					callback.onPushFailed();
2906				}
2907			}
2908		});
2909	}
2910
2911	public void pushConferenceConfiguration(final Conversation conversation, final Bundle options, final OnConfigurationPushed callback) {
2912	    if (options.getString("muc#roomconfig_whois","moderators").equals("anyone")) {
2913	        conversation.setAttribute("accept_non_anonymous",true);
2914            updateConversation(conversation);
2915        }
2916		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2917		request.setTo(conversation.getJid().asBareJid());
2918		request.query("http://jabber.org/protocol/muc#owner");
2919		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2920			@Override
2921			public void onIqPacketReceived(Account account, IqPacket packet) {
2922				if (packet.getType() == IqPacket.TYPE.RESULT) {
2923					Data data = Data.parse(packet.query().findChild("x", Namespace.DATA));
2924					data.submit(options);
2925					Log.d(Config.LOGTAG,data.toString());
2926					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
2927					set.setTo(conversation.getJid().asBareJid());
2928					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
2929					sendIqPacket(account, set, new OnIqPacketReceived() {
2930						@Override
2931						public void onIqPacketReceived(Account account, IqPacket packet) {
2932							if (callback != null) {
2933								if (packet.getType() == IqPacket.TYPE.RESULT) {
2934									callback.onPushSucceeded();
2935								} else {
2936									callback.onPushFailed();
2937								}
2938							}
2939						}
2940					});
2941				} else {
2942					if (callback != null) {
2943						callback.onPushFailed();
2944					}
2945				}
2946			}
2947		});
2948	}
2949
2950	public void pushSubjectToConference(final Conversation conference, final String subject) {
2951		MessagePacket packet = this.getMessageGenerator().conferenceSubject(conference, StringUtils.nullOnEmpty(subject));
2952		this.sendMessagePacket(conference.getAccount(), packet);
2953	}
2954
2955	public void changeAffiliationInConference(final Conversation conference, Jid user, final MucOptions.Affiliation affiliation, final OnAffiliationChanged callback) {
2956		final Jid jid = user.asBareJid();
2957		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jid, affiliation.toString());
2958		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
2959			@Override
2960			public void onIqPacketReceived(Account account, IqPacket packet) {
2961				if (packet.getType() == IqPacket.TYPE.RESULT) {
2962					conference.getMucOptions().changeAffiliation(jid, affiliation);
2963					getAvatarService().clear(conference);
2964					callback.onAffiliationChangedSuccessful(jid);
2965				} else {
2966					callback.onAffiliationChangeFailed(jid, R.string.could_not_change_affiliation);
2967				}
2968			}
2969		});
2970	}
2971
2972	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
2973		List<Jid> jids = new ArrayList<>();
2974		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
2975			if (user.getAffiliation() == before && user.getRealJid() != null) {
2976				jids.add(user.getRealJid());
2977			}
2978		}
2979		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jids, after.toString());
2980		sendIqPacket(conference.getAccount(), request, mDefaultIqHandler);
2981	}
2982
2983	public void changeRoleInConference(final Conversation conference, final String nick, MucOptions.Role role) {
2984		IqPacket request = this.mIqGenerator.changeRole(conference, nick, role.toString());
2985		Log.d(Config.LOGTAG, request.toString());
2986		sendIqPacket(conference.getAccount(), request, (account, packet) -> {
2987            if (packet.getType() != IqPacket.TYPE.RESULT) {
2988                Log.d(Config.LOGTAG,account.getJid().asBareJid()+" unable to change role of "+nick);
2989            }
2990        });
2991	}
2992
2993    public void destroyRoom(final Conversation conversation, final OnRoomDestroy callback) {
2994        IqPacket request = new IqPacket(IqPacket.TYPE.SET);
2995        request.setTo(conversation.getJid().asBareJid());
2996        request.query("http://jabber.org/protocol/muc#owner").addChild("destroy");
2997        sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2998            @Override
2999            public void onIqPacketReceived(Account account, IqPacket packet) {
3000                if (packet.getType() == IqPacket.TYPE.RESULT) {
3001                    if (callback != null) {
3002                        callback.onRoomDestroySucceeded();
3003                    }
3004                } else if (packet.getType() == IqPacket.TYPE.ERROR) {
3005                    if (callback != null) {
3006                        callback.onRoomDestroyFailed();
3007                    }
3008                }
3009            }
3010        });
3011    }
3012
3013	private void disconnect(Account account, boolean force) {
3014		if ((account.getStatus() == Account.State.ONLINE)
3015				|| (account.getStatus() == Account.State.DISABLED)) {
3016			final XmppConnection connection = account.getXmppConnection();
3017			if (!force) {
3018				List<Conversation> conversations = getConversations();
3019				for (Conversation conversation : conversations) {
3020					if (conversation.getAccount() == account) {
3021						if (conversation.getMode() == Conversation.MODE_MULTI) {
3022							leaveMuc(conversation, true);
3023						}
3024					}
3025				}
3026				sendOfflinePresence(account);
3027			}
3028			connection.disconnect(force);
3029		}
3030	}
3031
3032	@Override
3033	public IBinder onBind(Intent intent) {
3034		return mBinder;
3035	}
3036
3037	public void updateMessage(Message message) {
3038		updateMessage(message, true);
3039	}
3040
3041	public void updateMessage(Message message, boolean includeBody) {
3042		databaseBackend.updateMessage(message, includeBody);
3043		updateConversationUi();
3044	}
3045
3046	public void updateMessage(Message message, String uuid) {
3047		if (!databaseBackend.updateMessage(message, uuid)) {
3048            Log.e(Config.LOGTAG,"error updated message in DB after edit");
3049        }
3050		updateConversationUi();
3051	}
3052
3053	protected void syncDirtyContacts(Account account) {
3054		for (Contact contact : account.getRoster().getContacts()) {
3055			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
3056				pushContactToServer(contact);
3057			}
3058			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
3059				deleteContactOnServer(contact);
3060			}
3061		}
3062	}
3063
3064	public void createContact(Contact contact, boolean autoGrant) {
3065		if (autoGrant) {
3066			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
3067			contact.setOption(Contact.Options.ASKING);
3068		}
3069		pushContactToServer(contact);
3070	}
3071
3072	public void pushContactToServer(final Contact contact) {
3073		contact.resetOption(Contact.Options.DIRTY_DELETE);
3074		contact.setOption(Contact.Options.DIRTY_PUSH);
3075		final Account account = contact.getAccount();
3076		if (account.getStatus() == Account.State.ONLINE) {
3077			final boolean ask = contact.getOption(Contact.Options.ASKING);
3078			final boolean sendUpdates = contact
3079					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
3080					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
3081			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
3082			iq.query(Namespace.ROSTER).addChild(contact.asElement());
3083			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
3084			if (sendUpdates) {
3085				sendPresencePacket(account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
3086			}
3087			if (ask) {
3088				sendPresencePacket(account, mPresenceGenerator.requestPresenceUpdatesFrom(contact));
3089			}
3090		} else {
3091			syncRoster(contact.getAccount());
3092		}
3093	}
3094
3095	public void publishMucAvatar(final Conversation conversation, final Uri image, final OnAvatarPublication callback) {
3096		new Thread(() -> {
3097			final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
3098			final int size = Config.AVATAR_SIZE;
3099			final Avatar avatar = getFileBackend().getPepAvatar(image, size, format);
3100			if (avatar != null) {
3101				if (!getFileBackend().save(avatar)) {
3102					callback.onAvatarPublicationFailed(R.string.error_saving_avatar);
3103					return;
3104				}
3105				avatar.owner = conversation.getJid().asBareJid();
3106				publishMucAvatar(conversation, avatar, callback);
3107			} else {
3108				callback.onAvatarPublicationFailed(R.string.error_publish_avatar_converting);
3109			}
3110		}).start();
3111	}
3112
3113	public void publishAvatar(final Account account, final Uri image, final OnAvatarPublication callback) {
3114		new Thread(() -> {
3115			final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
3116			final int size = Config.AVATAR_SIZE;
3117			final Avatar avatar = getFileBackend().getPepAvatar(image, size, format);
3118			if (avatar != null) {
3119				if (!getFileBackend().save(avatar)) {
3120					Log.d(Config.LOGTAG,"unable to save vcard");
3121					callback.onAvatarPublicationFailed(R.string.error_saving_avatar);
3122					return;
3123				}
3124				publishAvatar(account, avatar, callback);
3125			} else {
3126				callback.onAvatarPublicationFailed(R.string.error_publish_avatar_converting);
3127			}
3128		}).start();
3129
3130	}
3131
3132	private void publishMucAvatar(Conversation conversation, Avatar avatar, OnAvatarPublication callback) {
3133		final IqPacket retrieve = mIqGenerator.retrieveVcardAvatar(avatar);
3134		sendIqPacket(conversation.getAccount(), retrieve, (account, response) -> {
3135			boolean itemNotFound = response.getType() == IqPacket.TYPE.ERROR && response.hasChild("error") && response.findChild("error").hasChild("item-not-found");
3136			if (response.getType() == IqPacket.TYPE.RESULT || itemNotFound) {
3137				Element vcard = response.findChild("vCard", "vcard-temp");
3138				if (vcard == null) {
3139					vcard = new Element("vCard", "vcard-temp");
3140				}
3141				Element photo = vcard.findChild("PHOTO");
3142				if (photo == null) {
3143					photo = vcard.addChild("PHOTO");
3144				}
3145				photo.clearChildren();
3146				photo.addChild("TYPE").setContent(avatar.type);
3147				photo.addChild("BINVAL").setContent(avatar.image);
3148				IqPacket publication = new IqPacket(IqPacket.TYPE.SET);
3149				publication.setTo(conversation.getJid().asBareJid());
3150				publication.addChild(vcard);
3151				sendIqPacket(account, publication, (a1, publicationResponse) -> {
3152					if (publicationResponse.getType() == IqPacket.TYPE.RESULT) {
3153						callback.onAvatarPublicationSucceeded();
3154					} else {
3155						Log.d(Config.LOGTAG, "failed to publish vcard " + publicationResponse.getError());
3156						callback.onAvatarPublicationFailed(R.string.error_publish_avatar_server_reject);
3157					}
3158				});
3159			} else {
3160				Log.d(Config.LOGTAG, "failed to request vcard " + response.toString());
3161				callback.onAvatarPublicationFailed(R.string.error_publish_avatar_no_server_support);
3162			}
3163		});
3164	}
3165
3166    public void publishAvatar(Account account, final Avatar avatar, final OnAvatarPublication callback) {
3167        final Bundle options;
3168        if (account.getXmppConnection().getFeatures().pepPublishOptions()) {
3169            options = PublishOptions.openAccess();
3170        } else {
3171            options = null;
3172        }
3173        publishAvatar(account, avatar, options, true, callback);
3174    }
3175
3176	public void publishAvatar(Account account, final Avatar avatar, final Bundle options, final boolean retry, final OnAvatarPublication callback) {
3177        Log.d(Config.LOGTAG,account.getJid().asBareJid()+": publishing avatar. options="+options);
3178		IqPacket packet = this.mIqGenerator.publishAvatar(avatar, options);
3179		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3180
3181			@Override
3182			public void onIqPacketReceived(Account account, IqPacket result) {
3183				if (result.getType() == IqPacket.TYPE.RESULT) {
3184                    publishAvatarMetadata(account, avatar, options,true, callback);
3185                } else if (retry && PublishOptions.preconditionNotMet(result)) {
3186				    pushNodeConfiguration(account, "urn:xmpp:avatar:data", options, new OnConfigurationPushed() {
3187                        @Override
3188                        public void onPushSucceeded() {
3189                            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": changed node configuration for avatar node");
3190                            publishAvatar(account, avatar, options, false, callback);
3191                        }
3192
3193                        @Override
3194                        public void onPushFailed() {
3195                            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to change node configuration for avatar node");
3196                            publishAvatar(account, avatar, null, false, callback);
3197                        }
3198                    });
3199				} else {
3200					Element error = result.findChild("error");
3201					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server rejected avatar " + (avatar.size / 1024) + "KiB " + (error != null ? error.toString() : ""));
3202					if (callback != null) {
3203						callback.onAvatarPublicationFailed(R.string.error_publish_avatar_server_reject);
3204					}
3205				}
3206			}
3207		});
3208	}
3209
3210	public void publishAvatarMetadata(Account account, final Avatar avatar, final Bundle options, final boolean retry, final OnAvatarPublication callback) {
3211        final IqPacket packet = XmppConnectionService.this.mIqGenerator.publishAvatarMetadata(avatar, options);
3212        sendIqPacket(account, packet, new OnIqPacketReceived() {
3213            @Override
3214            public void onIqPacketReceived(Account account, IqPacket result) {
3215                if (result.getType() == IqPacket.TYPE.RESULT) {
3216                    if (account.setAvatar(avatar.getFilename())) {
3217                        getAvatarService().clear(account);
3218                        databaseBackend.updateAccount(account);
3219                        notifyAccountAvatarHasChanged(account);
3220                    }
3221                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": published avatar " + (avatar.size / 1024) + "KiB");
3222                    if (callback != null) {
3223                        callback.onAvatarPublicationSucceeded();
3224                    }
3225                } else if (retry && PublishOptions.preconditionNotMet(result)) {
3226                    pushNodeConfiguration(account, "urn:xmpp:avatar:metadata", options, new OnConfigurationPushed() {
3227                        @Override
3228                        public void onPushSucceeded() {
3229                            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": changed node configuration for avatar meta data node");
3230                            publishAvatarMetadata(account, avatar, options,false, callback);
3231                        }
3232
3233                        @Override
3234                        public void onPushFailed() {
3235                            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to change node configuration for avatar meta data node");
3236                            publishAvatarMetadata(account, avatar,  null,false, callback);
3237                        }
3238                    });
3239                } else {
3240                    if (callback != null) {
3241                        callback.onAvatarPublicationFailed(R.string.error_publish_avatar_server_reject);
3242                    }
3243                }
3244            }
3245        });
3246    }
3247
3248	public void republishAvatarIfNeeded(Account account) {
3249		if (account.getAxolotlService().isPepBroken()) {
3250			Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping republication of avatar because pep is broken");
3251			return;
3252		}
3253		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
3254		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3255
3256			private Avatar parseAvatar(IqPacket packet) {
3257				Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
3258				if (pubsub != null) {
3259					Element items = pubsub.findChild("items");
3260					if (items != null) {
3261						return Avatar.parseMetadata(items);
3262					}
3263				}
3264				return null;
3265			}
3266
3267			private boolean errorIsItemNotFound(IqPacket packet) {
3268				Element error = packet.findChild("error");
3269				return packet.getType() == IqPacket.TYPE.ERROR
3270						&& error != null
3271						&& error.hasChild("item-not-found");
3272			}
3273
3274			@Override
3275			public void onIqPacketReceived(Account account, IqPacket packet) {
3276				if (packet.getType() == IqPacket.TYPE.RESULT || errorIsItemNotFound(packet)) {
3277					Avatar serverAvatar = parseAvatar(packet);
3278					if (serverAvatar == null && account.getAvatar() != null) {
3279						Avatar avatar = fileBackend.getStoredPepAvatar(account.getAvatar());
3280						if (avatar != null) {
3281							Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": avatar on server was null. republishing");
3282							publishAvatar(account, fileBackend.getStoredPepAvatar(account.getAvatar()), null);
3283						} else {
3284							Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": error rereading avatar");
3285						}
3286					}
3287				}
3288			}
3289		});
3290	}
3291
3292	public void fetchAvatar(Account account, Avatar avatar) {
3293		fetchAvatar(account, avatar, null);
3294	}
3295
3296	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
3297		final String KEY = generateFetchKey(account, avatar);
3298		synchronized (this.mInProgressAvatarFetches) {
3299		    if (mInProgressAvatarFetches.add(KEY)) {
3300                switch (avatar.origin) {
3301                    case PEP:
3302                        this.mInProgressAvatarFetches.add(KEY);
3303                        fetchAvatarPep(account, avatar, callback);
3304                        break;
3305                    case VCARD:
3306                        this.mInProgressAvatarFetches.add(KEY);
3307                        fetchAvatarVcard(account, avatar, callback);
3308                        break;
3309                }
3310            } else if (avatar.origin == Avatar.Origin.PEP) {
3311		        mOmittedPepAvatarFetches.add(KEY);
3312            } else {
3313		        Log.d(Config.LOGTAG,account.getJid().asBareJid()+": already fetching "+avatar.origin+" avatar for "+avatar.owner);
3314            }
3315		}
3316	}
3317
3318	private void fetchAvatarPep(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
3319		IqPacket packet = this.mIqGenerator.retrievePepAvatar(avatar);
3320		sendIqPacket(account, packet, (a, result) -> {
3321			synchronized (mInProgressAvatarFetches) {
3322				mInProgressAvatarFetches.remove(generateFetchKey(a, avatar));
3323			}
3324			final String ERROR = a.getJid().asBareJid() + ": fetching avatar for " + avatar.owner + " failed ";
3325			if (result.getType() == IqPacket.TYPE.RESULT) {
3326				avatar.image = mIqParser.avatarData(result);
3327				if (avatar.image != null) {
3328					if (getFileBackend().save(avatar)) {
3329						if (a.getJid().asBareJid().equals(avatar.owner)) {
3330							if (a.setAvatar(avatar.getFilename())) {
3331								databaseBackend.updateAccount(a);
3332							}
3333							getAvatarService().clear(a);
3334							updateConversationUi();
3335							updateAccountUi();
3336						} else {
3337							Contact contact = a.getRoster().getContact(avatar.owner);
3338							if (contact.setAvatar(avatar)) {
3339								syncRoster(account);
3340								getAvatarService().clear(contact);
3341								updateConversationUi();
3342								updateRosterUi();
3343							}
3344						}
3345						if (callback != null) {
3346							callback.success(avatar);
3347						}
3348						Log.d(Config.LOGTAG, a.getJid().asBareJid()
3349								+ ": successfully fetched pep avatar for " + avatar.owner);
3350						return;
3351					}
3352				} else {
3353
3354					Log.d(Config.LOGTAG, ERROR + "(parsing error)");
3355				}
3356			} else {
3357				Element error = result.findChild("error");
3358				if (error == null) {
3359					Log.d(Config.LOGTAG, ERROR + "(server error)");
3360				} else {
3361					Log.d(Config.LOGTAG, ERROR + error.toString());
3362				}
3363			}
3364			if (callback != null) {
3365				callback.error(0, null);
3366			}
3367
3368		});
3369	}
3370
3371	private void fetchAvatarVcard(final Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
3372		IqPacket packet = this.mIqGenerator.retrieveVcardAvatar(avatar);
3373		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3374			@Override
3375			public void onIqPacketReceived(Account account, IqPacket packet) {
3376			    final boolean previouslyOmittedPepFetch;
3377				synchronized (mInProgressAvatarFetches) {
3378				    final String KEY = generateFetchKey(account, avatar);
3379					mInProgressAvatarFetches.remove(KEY);
3380					previouslyOmittedPepFetch = mOmittedPepAvatarFetches.remove(KEY);
3381				}
3382				if (packet.getType() == IqPacket.TYPE.RESULT) {
3383					Element vCard = packet.findChild("vCard", "vcard-temp");
3384					Element photo = vCard != null ? vCard.findChild("PHOTO") : null;
3385					String image = photo != null ? photo.findChildContent("BINVAL") : null;
3386					if (image != null) {
3387						avatar.image = image;
3388						if (getFileBackend().save(avatar)) {
3389							Log.d(Config.LOGTAG, account.getJid().asBareJid()
3390									+ ": successfully fetched vCard avatar for " + avatar.owner+" omittedPep="+previouslyOmittedPepFetch);
3391							if (avatar.owner.isBareJid()) {
3392								if (account.getJid().asBareJid().equals(avatar.owner) && account.getAvatar() == null) {
3393									Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": had no avatar. replacing with vcard");
3394									account.setAvatar(avatar.getFilename());
3395									databaseBackend.updateAccount(account);
3396									getAvatarService().clear(account);
3397									updateAccountUi();
3398								} else {
3399									Contact contact = account.getRoster().getContact(avatar.owner);
3400									if (contact.setAvatar(avatar, previouslyOmittedPepFetch)) {
3401										syncRoster(account);
3402										getAvatarService().clear(contact);
3403										updateRosterUi();
3404									}
3405								}
3406								updateConversationUi();
3407							} else {
3408								Conversation conversation = find(account, avatar.owner.asBareJid());
3409								if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
3410									MucOptions.User user = conversation.getMucOptions().findUserByFullJid(avatar.owner);
3411									if (user != null) {
3412										if (user.setAvatar(avatar)) {
3413											getAvatarService().clear(user);
3414											updateConversationUi();
3415											updateMucRosterUi();
3416										}
3417										if (user.getRealJid() != null) {
3418										    Contact contact = account.getRoster().getContact(user.getRealJid());
3419										    if (contact.setAvatar(avatar)) {
3420                                                syncRoster(account);
3421                                                getAvatarService().clear(contact);
3422                                                updateRosterUi();
3423                                            }
3424                                        }
3425									}
3426								}
3427							}
3428						}
3429					}
3430				}
3431			}
3432		});
3433	}
3434
3435	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
3436		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
3437		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3438
3439			@Override
3440			public void onIqPacketReceived(Account account, IqPacket packet) {
3441				if (packet.getType() == IqPacket.TYPE.RESULT) {
3442					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
3443					if (pubsub != null) {
3444						Element items = pubsub.findChild("items");
3445						if (items != null) {
3446							Avatar avatar = Avatar.parseMetadata(items);
3447							if (avatar != null) {
3448								avatar.owner = account.getJid().asBareJid();
3449								if (fileBackend.isAvatarCached(avatar)) {
3450									if (account.setAvatar(avatar.getFilename())) {
3451										databaseBackend.updateAccount(account);
3452									}
3453									getAvatarService().clear(account);
3454									callback.success(avatar);
3455								} else {
3456									fetchAvatarPep(account, avatar, callback);
3457								}
3458								return;
3459							}
3460						}
3461					}
3462				}
3463				callback.error(0, null);
3464			}
3465		});
3466	}
3467
3468	public void notifyAccountAvatarHasChanged(final Account account) {
3469	    final XmppConnection connection = account.getXmppConnection();
3470	    if (connection != null && connection.getFeatures().bookmarksConversion()) {
3471            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": avatar changed. resending presence to online group chats");
3472            for(Conversation conversation : conversations) {
3473                if (conversation.getAccount() == account && conversation.getMode() == Conversational.MODE_MULTI) {
3474                    final MucOptions mucOptions = conversation.getMucOptions();
3475                    if (mucOptions.online()) {
3476                        PresencePacket packet = mPresenceGenerator.selfPresence(account, Presence.Status.ONLINE, mucOptions.nonanonymous());
3477                        packet.setTo(mucOptions.getSelf().getFullJid());
3478                        connection.sendPresencePacket(packet);
3479                    }
3480                }
3481            }
3482        }
3483    }
3484
3485	public void deleteContactOnServer(Contact contact) {
3486		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
3487		contact.resetOption(Contact.Options.DIRTY_PUSH);
3488		contact.setOption(Contact.Options.DIRTY_DELETE);
3489		Account account = contact.getAccount();
3490		if (account.getStatus() == Account.State.ONLINE) {
3491			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
3492			Element item = iq.query(Namespace.ROSTER).addChild("item");
3493			item.setAttribute("jid", contact.getJid().toString());
3494			item.setAttribute("subscription", "remove");
3495			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
3496		}
3497	}
3498
3499	public void updateConversation(final Conversation conversation) {
3500		mDatabaseWriterExecutor.execute(() -> databaseBackend.updateConversation(conversation));
3501	}
3502
3503	private void reconnectAccount(final Account account, final boolean force, final boolean interactive) {
3504		synchronized (account) {
3505			XmppConnection connection = account.getXmppConnection();
3506			if (connection == null) {
3507				connection = createConnection(account);
3508				account.setXmppConnection(connection);
3509			}
3510			boolean hasInternet = hasInternetConnection();
3511			if (account.isEnabled() && hasInternet) {
3512				if (!force) {
3513					disconnect(account, false);
3514				}
3515				Thread thread = new Thread(connection);
3516				connection.setInteractive(interactive);
3517				connection.prepareNewConnection();
3518				connection.interrupt();
3519				thread.start();
3520				scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
3521			} else {
3522				disconnect(account, force || account.getTrueStatus().isError() || !hasInternet);
3523				account.getRoster().clearPresences();
3524				connection.resetEverything();
3525				final AxolotlService axolotlService = account.getAxolotlService();
3526				if (axolotlService != null) {
3527					axolotlService.resetBrokenness();
3528				}
3529				if (!hasInternet) {
3530					account.setStatus(Account.State.NO_INTERNET);
3531				}
3532			}
3533		}
3534	}
3535
3536	public void reconnectAccountInBackground(final Account account) {
3537		new Thread(() -> reconnectAccount(account, false, true)).start();
3538	}
3539
3540	public void invite(Conversation conversation, Jid contact) {
3541		Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": inviting " + contact + " to " + conversation.getJid().asBareJid());
3542		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
3543		sendMessagePacket(conversation.getAccount(), packet);
3544	}
3545
3546	public void directInvite(Conversation conversation, Jid jid) {
3547		MessagePacket packet = mMessageGenerator.directInvite(conversation, jid);
3548		sendMessagePacket(conversation.getAccount(), packet);
3549	}
3550
3551	public void resetSendingToWaiting(Account account) {
3552		for (Conversation conversation : getConversations()) {
3553			if (conversation.getAccount() == account) {
3554				conversation.findUnsentTextMessages(message -> markMessage(message, Message.STATUS_WAITING));
3555			}
3556		}
3557	}
3558
3559	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status) {
3560		return markMessage(account, recipient, uuid, status, null);
3561	}
3562
3563	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status, String errorMessage) {
3564		if (uuid == null) {
3565			return null;
3566		}
3567		for (Conversation conversation : getConversations()) {
3568			if (conversation.getJid().asBareJid().equals(recipient) && conversation.getAccount() == account) {
3569				final Message message = conversation.findSentMessageWithUuidOrRemoteId(uuid);
3570				if (message != null) {
3571					markMessage(message, status, errorMessage);
3572				}
3573				return message;
3574			}
3575		}
3576		return null;
3577	}
3578
3579	public boolean markMessage(Conversation conversation, String uuid, int status, String serverMessageId) {
3580		if (uuid == null) {
3581			return false;
3582		} else {
3583			Message message = conversation.findSentMessageWithUuid(uuid);
3584			if (message != null) {
3585				if (message.getServerMsgId() == null) {
3586					message.setServerMsgId(serverMessageId);
3587				}
3588				markMessage(message, status);
3589				return true;
3590			} else {
3591				return false;
3592			}
3593		}
3594	}
3595
3596	public void markMessage(Message message, int status) {
3597		markMessage(message, status, null);
3598	}
3599
3600
3601	public void markMessage(Message message, int status, String errorMessage) {
3602		final int c = message.getStatus();
3603		if (status == Message.STATUS_SEND_FAILED && (c == Message.STATUS_SEND_RECEIVED || c == Message.STATUS_SEND_DISPLAYED)) {
3604			return;
3605		}
3606		if (status == Message.STATUS_SEND_RECEIVED && c == Message.STATUS_SEND_DISPLAYED) {
3607			return;
3608		}
3609		message.setErrorMessage(errorMessage);
3610		message.setStatus(status);
3611		databaseBackend.updateMessage(message, false);
3612		updateConversationUi();
3613	}
3614
3615	private SharedPreferences getPreferences() {
3616		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
3617	}
3618
3619	public long getAutomaticMessageDeletionDate() {
3620		final long timeout = getLongPreference(SettingsActivity.AUTOMATIC_MESSAGE_DELETION, R.integer.automatic_message_deletion);
3621		return timeout == 0 ? timeout : (System.currentTimeMillis() - (timeout * 1000));
3622	}
3623
3624	public long getLongPreference(String name, @IntegerRes int res) {
3625		long defaultValue = getResources().getInteger(res);
3626		try {
3627			return Long.parseLong(getPreferences().getString(name, String.valueOf(defaultValue)));
3628		} catch (NumberFormatException e) {
3629			return defaultValue;
3630		}
3631	}
3632
3633	public boolean getBooleanPreference(String name, @BoolRes int res) {
3634		return getPreferences().getBoolean(name, getResources().getBoolean(res));
3635	}
3636
3637	public boolean confirmMessages() {
3638		return getBooleanPreference("confirm_messages", R.bool.confirm_messages);
3639	}
3640
3641	public boolean allowMessageCorrection() {
3642		return getBooleanPreference("allow_message_correction", R.bool.allow_message_correction);
3643	}
3644
3645	public boolean sendChatStates() {
3646		return getBooleanPreference("chat_states", R.bool.chat_states);
3647	}
3648
3649	private boolean synchronizeWithBookmarks() {
3650		return getBooleanPreference("autojoin", R.bool.autojoin);
3651	}
3652
3653	public boolean indicateReceived() {
3654		return getBooleanPreference("indicate_received", R.bool.indicate_received);
3655	}
3656
3657	public boolean useTorToConnect() {
3658		return QuickConversationsService.isConversations() && getBooleanPreference("use_tor", R.bool.use_tor);
3659	}
3660
3661	public boolean showExtendedConnectionOptions() {
3662		return QuickConversationsService.isConversations() && getBooleanPreference("show_connection_options", R.bool.show_connection_options);
3663	}
3664
3665	public boolean broadcastLastActivity() {
3666		return getBooleanPreference(SettingsActivity.BROADCAST_LAST_ACTIVITY, R.bool.last_activity);
3667	}
3668
3669	public int unreadCount() {
3670		int count = 0;
3671		for (Conversation conversation : getConversations()) {
3672			count += conversation.unreadCount();
3673		}
3674		return count;
3675	}
3676
3677
3678	private <T> List<T> threadSafeList(Set<T> set) {
3679		synchronized (LISTENER_LOCK) {
3680			return set.size() == 0 ? Collections.emptyList() : new ArrayList<>(set);
3681		}
3682	}
3683
3684	public void showErrorToastInUi(int resId) {
3685		for (OnShowErrorToast listener : threadSafeList(this.mOnShowErrorToasts)) {
3686			listener.onShowErrorToast(resId);
3687		}
3688	}
3689
3690	public void updateConversationUi() {
3691		for (OnConversationUpdate listener : threadSafeList(this.mOnConversationUpdates)) {
3692			listener.onConversationUpdate();
3693		}
3694	}
3695
3696	public void updateAccountUi() {
3697		for (OnAccountUpdate listener : threadSafeList(this.mOnAccountUpdates)) {
3698			listener.onAccountUpdate();
3699		}
3700	}
3701
3702	public void updateRosterUi() {
3703		for (OnRosterUpdate listener : threadSafeList(this.mOnRosterUpdates)) {
3704			listener.onRosterUpdate();
3705		}
3706	}
3707
3708	public boolean displayCaptchaRequest(Account account, String id, Data data, Bitmap captcha) {
3709		if (mOnCaptchaRequested.size() > 0) {
3710			DisplayMetrics metrics = getApplicationContext().getResources().getDisplayMetrics();
3711			Bitmap scaled = Bitmap.createScaledBitmap(captcha, (int) (captcha.getWidth() * metrics.scaledDensity),
3712					(int) (captcha.getHeight() * metrics.scaledDensity), false);
3713			for (OnCaptchaRequested listener : threadSafeList(this.mOnCaptchaRequested)) {
3714				listener.onCaptchaRequested(account, id, data, scaled);
3715			}
3716			return true;
3717		}
3718		return false;
3719	}
3720
3721	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
3722		for (OnUpdateBlocklist listener : threadSafeList(this.mOnUpdateBlocklist)) {
3723			listener.OnUpdateBlocklist(status);
3724		}
3725	}
3726
3727	public void updateMucRosterUi() {
3728		for (OnMucRosterUpdate listener : threadSafeList(this.mOnMucRosterUpdate)) {
3729			listener.onMucRosterUpdate();
3730		}
3731	}
3732
3733	public void keyStatusUpdated(AxolotlService.FetchStatus report) {
3734		for (OnKeyStatusUpdated listener : threadSafeList(this.mOnKeyStatusUpdated)) {
3735			listener.onKeyStatusUpdated(report);
3736		}
3737	}
3738
3739	public Account findAccountByJid(final Jid accountJid) {
3740		for (Account account : this.accounts) {
3741			if (account.getJid().asBareJid().equals(accountJid.asBareJid())) {
3742				return account;
3743			}
3744		}
3745		return null;
3746	}
3747
3748	public Account findAccountByUuid(final String uuid) {
3749		for(Account account : this.accounts) {
3750			if (account.getUuid().equals(uuid)) {
3751				return account;
3752			}
3753		}
3754		return null;
3755	}
3756
3757	public Conversation findConversationByUuid(String uuid) {
3758		for (Conversation conversation : getConversations()) {
3759			if (conversation.getUuid().equals(uuid)) {
3760				return conversation;
3761			}
3762		}
3763		return null;
3764	}
3765
3766	public Conversation findUniqueConversationByJid(XmppUri xmppUri) {
3767		List<Conversation> findings = new ArrayList<>();
3768		for (Conversation c : getConversations()) {
3769			if (c.getAccount().isEnabled() && c.getJid().asBareJid().equals(xmppUri.getJid()) && ((c.getMode() == Conversational.MODE_MULTI) == xmppUri.isAction(XmppUri.ACTION_JOIN))) {
3770				findings.add(c);
3771			}
3772		}
3773		return findings.size() == 1 ? findings.get(0) : null;
3774	}
3775
3776	public boolean markRead(final Conversation conversation, boolean dismiss) {
3777		return markRead(conversation, null, dismiss).size() > 0;
3778	}
3779
3780	public void markRead(final Conversation conversation) {
3781		markRead(conversation, null, true);
3782	}
3783
3784	public List<Message> markRead(final Conversation conversation, String upToUuid, boolean dismiss) {
3785		if (dismiss) {
3786			mNotificationService.clear(conversation);
3787		}
3788		final List<Message> readMessages = conversation.markRead(upToUuid);
3789		if (readMessages.size() > 0) {
3790			Runnable runnable = () -> {
3791				for (Message message : readMessages) {
3792					databaseBackend.updateMessage(message, false);
3793				}
3794			};
3795			mDatabaseWriterExecutor.execute(runnable);
3796			updateUnreadCountBadge();
3797			return readMessages;
3798		} else {
3799			return readMessages;
3800		}
3801	}
3802
3803	public synchronized void updateUnreadCountBadge() {
3804		int count = unreadCount();
3805		if (unreadCount != count) {
3806			Log.d(Config.LOGTAG, "update unread count to " + count);
3807			if (count > 0) {
3808				ShortcutBadger.applyCount(getApplicationContext(), count);
3809			} else {
3810				ShortcutBadger.removeCount(getApplicationContext());
3811			}
3812			unreadCount = count;
3813		}
3814	}
3815
3816	public void sendReadMarker(final Conversation conversation, String upToUuid) {
3817		final boolean isPrivateAndNonAnonymousMuc = conversation.getMode() == Conversation.MODE_MULTI && conversation.isPrivateAndNonAnonymous();
3818		final List<Message> readMessages = this.markRead(conversation, upToUuid, true);
3819		if (readMessages.size() > 0) {
3820			updateConversationUi();
3821		}
3822		final Message markable = Conversation.getLatestMarkableMessage(readMessages, isPrivateAndNonAnonymousMuc);
3823		if (confirmMessages()
3824				&& markable != null
3825				&& (markable.trusted() || isPrivateAndNonAnonymousMuc)
3826				&& markable.getRemoteMsgId() != null) {
3827			Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": sending read marker to " + markable.getCounterpart().toString());
3828			Account account = conversation.getAccount();
3829			final Jid to = markable.getCounterpart();
3830			final boolean groupChat = conversation.getMode() == Conversation.MODE_MULTI;
3831			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId(), markable.getCounterpart(), groupChat);
3832			this.sendMessagePacket(conversation.getAccount(), packet);
3833		}
3834	}
3835
3836	public SecureRandom getRNG() {
3837		return this.mRandom;
3838	}
3839
3840	public MemorizingTrustManager getMemorizingTrustManager() {
3841		return this.mMemorizingTrustManager;
3842	}
3843
3844	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
3845		this.mMemorizingTrustManager = trustManager;
3846	}
3847
3848	public void updateMemorizingTrustmanager() {
3849		final MemorizingTrustManager tm;
3850		final boolean dontTrustSystemCAs = getBooleanPreference("dont_trust_system_cas", R.bool.dont_trust_system_cas);
3851		if (dontTrustSystemCAs) {
3852			tm = new MemorizingTrustManager(getApplicationContext(), null);
3853		} else {
3854			tm = new MemorizingTrustManager(getApplicationContext());
3855		}
3856		setMemorizingTrustManager(tm);
3857	}
3858
3859	public LruCache<String, Bitmap> getBitmapCache() {
3860		return this.mBitmapCache;
3861	}
3862
3863	public Collection<String> getKnownHosts() {
3864		final Set<String> hosts = new HashSet<>();
3865		for (final Account account : getAccounts()) {
3866			hosts.add(account.getServer());
3867			for (final Contact contact : account.getRoster().getContacts()) {
3868				if (contact.showInRoster()) {
3869					final String server = contact.getServer();
3870					if (server != null) {
3871						hosts.add(server);
3872					}
3873				}
3874			}
3875		}
3876		if (Config.QUICKSY_DOMAIN != null) {
3877		    hosts.remove(Config.QUICKSY_DOMAIN); //we only want to show this when we type a e164 number
3878        }
3879		if (Config.DOMAIN_LOCK != null) {
3880			hosts.add(Config.DOMAIN_LOCK);
3881		}
3882		if (Config.MAGIC_CREATE_DOMAIN != null) {
3883			hosts.add(Config.MAGIC_CREATE_DOMAIN);
3884		}
3885		return hosts;
3886	}
3887
3888	public Collection<String> getKnownConferenceHosts() {
3889		final Set<String> mucServers = new HashSet<>();
3890		for (final Account account : accounts) {
3891			if (account.getXmppConnection() != null) {
3892				mucServers.addAll(account.getXmppConnection().getMucServers());
3893				for (Bookmark bookmark : account.getBookmarks()) {
3894					final Jid jid = bookmark.getJid();
3895					final String s = jid == null ? null : jid.getDomain();
3896					if (s != null) {
3897						mucServers.add(s);
3898					}
3899				}
3900			}
3901		}
3902		return mucServers;
3903	}
3904
3905	public void sendMessagePacket(Account account, MessagePacket packet) {
3906		XmppConnection connection = account.getXmppConnection();
3907		if (connection != null) {
3908			connection.sendMessagePacket(packet);
3909		}
3910	}
3911
3912	public void sendPresencePacket(Account account, PresencePacket packet) {
3913		XmppConnection connection = account.getXmppConnection();
3914		if (connection != null) {
3915			connection.sendPresencePacket(packet);
3916		}
3917	}
3918
3919	public void sendCreateAccountWithCaptchaPacket(Account account, String id, Data data) {
3920		final XmppConnection connection = account.getXmppConnection();
3921		if (connection != null) {
3922			IqPacket request = mIqGenerator.generateCreateAccountWithCaptcha(account, id, data);
3923			connection.sendUnmodifiedIqPacket(request, connection.registrationResponseListener, true);
3924		}
3925	}
3926
3927	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
3928		final XmppConnection connection = account.getXmppConnection();
3929		if (connection != null) {
3930			connection.sendIqPacket(packet, callback);
3931		} else if (callback != null) {
3932		    callback.onIqPacketReceived(account,new IqPacket(IqPacket.TYPE.TIMEOUT));
3933        }
3934	}
3935
3936	public void sendPresence(final Account account) {
3937		sendPresence(account, checkListeners() && broadcastLastActivity());
3938	}
3939
3940	private void sendPresence(final Account account, final boolean includeIdleTimestamp) {
3941		Presence.Status status;
3942		if (manuallyChangePresence()) {
3943			status = account.getPresenceStatus();
3944		} else {
3945			status = getTargetPresence();
3946		}
3947		PresencePacket packet = mPresenceGenerator.selfPresence(account, status);
3948		String message = account.getPresenceStatusMessage();
3949		if (message != null && !message.isEmpty()) {
3950			packet.addChild(new Element("status").setContent(message));
3951		}
3952		if (mLastActivity > 0 && includeIdleTimestamp) {
3953			long since = Math.min(mLastActivity, System.currentTimeMillis()); //don't send future dates
3954			packet.addChild("idle", Namespace.IDLE).setAttribute("since", AbstractGenerator.getTimestamp(since));
3955		}
3956		sendPresencePacket(account, packet);
3957	}
3958
3959	private void deactivateGracePeriod() {
3960		for (Account account : getAccounts()) {
3961			account.deactivateGracePeriod();
3962		}
3963	}
3964
3965	public void refreshAllPresences() {
3966		boolean includeIdleTimestamp = checkListeners() && broadcastLastActivity();
3967		for (Account account : getAccounts()) {
3968			if (account.isEnabled()) {
3969				sendPresence(account, includeIdleTimestamp);
3970			}
3971		}
3972	}
3973
3974	private void refreshAllFcmTokens() {
3975		for (Account account : getAccounts()) {
3976			if (account.isOnlineAndConnected() && mPushManagementService.available(account)) {
3977				mPushManagementService.registerPushTokenOnServer(account);
3978			}
3979		}
3980	}
3981
3982	private void sendOfflinePresence(final Account account) {
3983		Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending offline presence");
3984		sendPresencePacket(account, mPresenceGenerator.sendOfflinePresence(account));
3985	}
3986
3987	public MessageGenerator getMessageGenerator() {
3988		return this.mMessageGenerator;
3989	}
3990
3991	public PresenceGenerator getPresenceGenerator() {
3992		return this.mPresenceGenerator;
3993	}
3994
3995	public IqGenerator getIqGenerator() {
3996		return this.mIqGenerator;
3997	}
3998
3999	public IqParser getIqParser() {
4000		return this.mIqParser;
4001	}
4002
4003	public JingleConnectionManager getJingleConnectionManager() {
4004		return this.mJingleConnectionManager;
4005	}
4006
4007	public MessageArchiveService getMessageArchiveService() {
4008		return this.mMessageArchiveService;
4009	}
4010
4011	public QuickConversationsService getQuickConversationsService() {
4012        return this.mQuickConversationsService;
4013    }
4014
4015	public List<Contact> findContacts(Jid jid, String accountJid) {
4016		ArrayList<Contact> contacts = new ArrayList<>();
4017		for (Account account : getAccounts()) {
4018			if ((account.isEnabled() || accountJid != null)
4019					&& (accountJid == null || accountJid.equals(account.getJid().asBareJid().toString()))) {
4020				Contact contact = account.getRoster().getContactFromContactList(jid);
4021				if (contact != null) {
4022					contacts.add(contact);
4023				}
4024			}
4025		}
4026		return contacts;
4027	}
4028
4029	public Conversation findFirstMuc(Jid jid) {
4030		for (Conversation conversation : getConversations()) {
4031			if (conversation.getAccount().isEnabled() && conversation.getJid().asBareJid().equals(jid.asBareJid()) && conversation.getMode() == Conversation.MODE_MULTI) {
4032				return conversation;
4033			}
4034		}
4035		return null;
4036	}
4037
4038	public NotificationService getNotificationService() {
4039		return this.mNotificationService;
4040	}
4041
4042	public HttpConnectionManager getHttpConnectionManager() {
4043		return this.mHttpConnectionManager;
4044	}
4045
4046	public void resendFailedMessages(final Message message) {
4047		final Collection<Message> messages = new ArrayList<>();
4048		Message current = message;
4049		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
4050			messages.add(current);
4051			if (current.mergeable(current.next())) {
4052				current = current.next();
4053			} else {
4054				break;
4055			}
4056		}
4057		for (final Message msg : messages) {
4058			msg.setTime(System.currentTimeMillis());
4059			markMessage(msg, Message.STATUS_WAITING);
4060			this.resendMessage(msg, false);
4061		}
4062		if (message.getConversation() instanceof Conversation) {
4063			((Conversation) message.getConversation()).sort();
4064		}
4065		updateConversationUi();
4066	}
4067
4068	public void clearConversationHistory(final Conversation conversation) {
4069		final long clearDate;
4070		final String reference;
4071		if (conversation.countMessages() > 0) {
4072			Message latestMessage = conversation.getLatestMessage();
4073			clearDate = latestMessage.getTimeSent() + 1000;
4074			reference = latestMessage.getServerMsgId();
4075		} else {
4076			clearDate = System.currentTimeMillis();
4077			reference = null;
4078		}
4079		conversation.clearMessages();
4080		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
4081		conversation.setLastClearHistory(clearDate, reference);
4082		Runnable runnable = () -> {
4083			databaseBackend.deleteMessagesInConversation(conversation);
4084			databaseBackend.updateConversation(conversation);
4085		};
4086		mDatabaseWriterExecutor.execute(runnable);
4087	}
4088
4089	public boolean sendBlockRequest(final Blockable blockable, boolean reportSpam) {
4090		if (blockable != null && blockable.getBlockedJid() != null) {
4091			final Jid jid = blockable.getBlockedJid();
4092			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid, reportSpam), new OnIqPacketReceived() {
4093
4094				@Override
4095				public void onIqPacketReceived(final Account account, final IqPacket packet) {
4096					if (packet.getType() == IqPacket.TYPE.RESULT) {
4097						account.getBlocklist().add(jid);
4098						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
4099					}
4100				}
4101			});
4102			if (removeBlockedConversations(blockable.getAccount(), jid)) {
4103				updateConversationUi();
4104				return true;
4105			} else {
4106				return false;
4107			}
4108		} else {
4109			return false;
4110		}
4111	}
4112
4113	public boolean removeBlockedConversations(final Account account, final Jid blockedJid) {
4114		boolean removed = false;
4115		synchronized (this.conversations) {
4116			boolean domainJid = blockedJid.getLocal() == null;
4117			for (Conversation conversation : this.conversations) {
4118				boolean jidMatches = (domainJid && blockedJid.getDomain().equals(conversation.getJid().getDomain()))
4119						|| blockedJid.equals(conversation.getJid().asBareJid());
4120				if (conversation.getAccount() == account
4121						&& conversation.getMode() == Conversation.MODE_SINGLE
4122						&& jidMatches) {
4123					this.conversations.remove(conversation);
4124					markRead(conversation);
4125					conversation.setStatus(Conversation.STATUS_ARCHIVED);
4126					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": archiving conversation " + conversation.getJid().asBareJid() + " because jid was blocked");
4127					updateConversation(conversation);
4128					removed = true;
4129				}
4130			}
4131		}
4132		return removed;
4133	}
4134
4135	public void sendUnblockRequest(final Blockable blockable) {
4136		if (blockable != null && blockable.getJid() != null) {
4137			final Jid jid = blockable.getBlockedJid();
4138			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
4139				@Override
4140				public void onIqPacketReceived(final Account account, final IqPacket packet) {
4141					if (packet.getType() == IqPacket.TYPE.RESULT) {
4142						account.getBlocklist().remove(jid);
4143						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
4144					}
4145				}
4146			});
4147		}
4148	}
4149
4150	public void publishDisplayName(Account account) {
4151		String displayName = account.getDisplayName();
4152		final IqPacket request;
4153		if (TextUtils.isEmpty(displayName)) {
4154            request = mIqGenerator.deleteNode(Namespace.NICK);
4155		} else {
4156            request = mIqGenerator.publishNick(displayName);
4157        }
4158        mAvatarService.clear(account);
4159        sendIqPacket(account, request, (account1, packet) -> {
4160            if (packet.getType() == IqPacket.TYPE.ERROR) {
4161                Log.d(Config.LOGTAG, account1.getJid().asBareJid() + ": unable to modify nick name "+packet.toString());
4162            }
4163        });
4164	}
4165
4166	public ServiceDiscoveryResult getCachedServiceDiscoveryResult(Pair<String, String> key) {
4167		ServiceDiscoveryResult result = discoCache.get(key);
4168		if (result != null) {
4169			return result;
4170		} else {
4171			result = databaseBackend.findDiscoveryResult(key.first, key.second);
4172			if (result != null) {
4173				discoCache.put(key, result);
4174			}
4175			return result;
4176		}
4177	}
4178
4179	public void fetchCaps(Account account, final Jid jid, final Presence presence) {
4180		final Pair<String, String> key = new Pair<>(presence.getHash(), presence.getVer());
4181		ServiceDiscoveryResult disco = getCachedServiceDiscoveryResult(key);
4182		if (disco != null) {
4183			presence.setServiceDiscoveryResult(disco);
4184		} else {
4185			if (!account.inProgressDiscoFetches.contains(key)) {
4186				account.inProgressDiscoFetches.add(key);
4187				IqPacket request = new IqPacket(IqPacket.TYPE.GET);
4188				request.setTo(jid);
4189				final String node = presence.getNode();
4190				final String ver = presence.getVer();
4191				final Element query = request.query("http://jabber.org/protocol/disco#info");
4192				if (node != null && ver != null) {
4193					query.setAttribute("node",node+"#"+ver);
4194				}
4195				Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": making disco request for " + key.second + " to " + jid);
4196				sendIqPacket(account, request, (a, response) -> {
4197					if (response.getType() == IqPacket.TYPE.RESULT) {
4198						ServiceDiscoveryResult discoveryResult = new ServiceDiscoveryResult(response);
4199						if (presence.getVer().equals(discoveryResult.getVer())) {
4200							databaseBackend.insertDiscoveryResult(discoveryResult);
4201							injectServiceDiscoveryResult(a.getRoster(), presence.getHash(), presence.getVer(), discoveryResult);
4202						} else {
4203							Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": mismatch in caps for contact " + jid + " " + presence.getVer() + " vs " + discoveryResult.getVer());
4204						}
4205					}
4206					a.inProgressDiscoFetches.remove(key);
4207				});
4208			}
4209		}
4210	}
4211
4212	private void injectServiceDiscoveryResult(Roster roster, String hash, String ver, ServiceDiscoveryResult disco) {
4213		for (Contact contact : roster.getContacts()) {
4214			for (Presence presence : contact.getPresences().getPresences().values()) {
4215				if (hash.equals(presence.getHash()) && ver.equals(presence.getVer())) {
4216					presence.setServiceDiscoveryResult(disco);
4217				}
4218			}
4219		}
4220	}
4221
4222	public void fetchMamPreferences(Account account, final OnMamPreferencesFetched callback) {
4223		final MessageArchiveService.Version version = MessageArchiveService.Version.get(account);
4224		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
4225		request.addChild("prefs", version.namespace);
4226		sendIqPacket(account, request, (account1, packet) -> {
4227			Element prefs = packet.findChild("prefs", version.namespace);
4228			if (packet.getType() == IqPacket.TYPE.RESULT && prefs != null) {
4229				callback.onPreferencesFetched(prefs);
4230			} else {
4231				callback.onPreferencesFetchFailed();
4232			}
4233		});
4234	}
4235
4236	public PushManagementService getPushManagementService() {
4237		return mPushManagementService;
4238	}
4239
4240	public void changeStatus(Account account, PresenceTemplate template, String signature) {
4241		if (!template.getStatusMessage().isEmpty()) {
4242			databaseBackend.insertPresenceTemplate(template);
4243		}
4244		account.setPgpSignature(signature);
4245		account.setPresenceStatus(template.getStatus());
4246		account.setPresenceStatusMessage(template.getStatusMessage());
4247		databaseBackend.updateAccount(account);
4248		sendPresence(account);
4249	}
4250
4251	public List<PresenceTemplate> getPresenceTemplates(Account account) {
4252		List<PresenceTemplate> templates = databaseBackend.getPresenceTemplates();
4253		for (PresenceTemplate template : account.getSelfContact().getPresences().asTemplates()) {
4254			if (!templates.contains(template)) {
4255				templates.add(0, template);
4256			}
4257		}
4258		return templates;
4259	}
4260
4261	public void saveConversationAsBookmark(Conversation conversation, String name) {
4262		Account account = conversation.getAccount();
4263		Bookmark bookmark = new Bookmark(account, conversation.getJid().asBareJid());
4264		if (!conversation.getJid().isBareJid()) {
4265			bookmark.setNick(conversation.getJid().getResource());
4266		}
4267		if (!TextUtils.isEmpty(name)) {
4268			bookmark.setBookmarkName(name);
4269		}
4270		bookmark.setAutojoin(getPreferences().getBoolean("autojoin", getResources().getBoolean(R.bool.autojoin)));
4271		account.getBookmarks().add(bookmark);
4272		pushBookmarks(account);
4273		bookmark.setConversation(conversation);
4274	}
4275
4276	public boolean verifyFingerprints(Contact contact, List<XmppUri.Fingerprint> fingerprints) {
4277		boolean performedVerification = false;
4278		final AxolotlService axolotlService = contact.getAccount().getAxolotlService();
4279		for (XmppUri.Fingerprint fp : fingerprints) {
4280			if (fp.type == XmppUri.FingerprintType.OMEMO) {
4281				String fingerprint = "05" + fp.fingerprint.replaceAll("\\s", "");
4282				FingerprintStatus fingerprintStatus = axolotlService.getFingerprintTrust(fingerprint);
4283				if (fingerprintStatus != null) {
4284					if (!fingerprintStatus.isVerified()) {
4285						performedVerification = true;
4286						axolotlService.setFingerprintTrust(fingerprint, fingerprintStatus.toVerified());
4287					}
4288				} else {
4289					axolotlService.preVerifyFingerprint(contact, fingerprint);
4290				}
4291			}
4292		}
4293		return performedVerification;
4294	}
4295
4296	public boolean verifyFingerprints(Account account, List<XmppUri.Fingerprint> fingerprints) {
4297		final AxolotlService axolotlService = account.getAxolotlService();
4298		boolean verifiedSomething = false;
4299		for (XmppUri.Fingerprint fp : fingerprints) {
4300			if (fp.type == XmppUri.FingerprintType.OMEMO) {
4301				String fingerprint = "05" + fp.fingerprint.replaceAll("\\s", "");
4302				Log.d(Config.LOGTAG, "trying to verify own fp=" + fingerprint);
4303				FingerprintStatus fingerprintStatus = axolotlService.getFingerprintTrust(fingerprint);
4304				if (fingerprintStatus != null) {
4305					if (!fingerprintStatus.isVerified()) {
4306						axolotlService.setFingerprintTrust(fingerprint, fingerprintStatus.toVerified());
4307						verifiedSomething = true;
4308					}
4309				} else {
4310					axolotlService.preVerifyFingerprint(account, fingerprint);
4311					verifiedSomething = true;
4312				}
4313			}
4314		}
4315		return verifiedSomething;
4316	}
4317
4318	public boolean blindTrustBeforeVerification() {
4319		return getBooleanPreference(SettingsActivity.BLIND_TRUST_BEFORE_VERIFICATION, R.bool.btbv);
4320	}
4321
4322	public ShortcutService getShortcutService() {
4323		return mShortcutService;
4324	}
4325
4326	public void pushMamPreferences(Account account, Element prefs) {
4327		IqPacket set = new IqPacket(IqPacket.TYPE.SET);
4328		set.addChild(prefs);
4329		sendIqPacket(account, set, null);
4330	}
4331
4332	public interface OnMamPreferencesFetched {
4333		void onPreferencesFetched(Element prefs);
4334
4335		void onPreferencesFetchFailed();
4336	}
4337
4338	public interface OnAccountCreated {
4339		void onAccountCreated(Account account);
4340
4341		void informUser(int r);
4342	}
4343
4344	public interface OnMoreMessagesLoaded {
4345		void onMoreMessagesLoaded(int count, Conversation conversation);
4346
4347		void informUser(int r);
4348	}
4349
4350	public interface OnAccountPasswordChanged {
4351		void onPasswordChangeSucceeded();
4352
4353		void onPasswordChangeFailed();
4354	}
4355
4356    public interface OnRoomDestroy {
4357        void onRoomDestroySucceeded();
4358
4359        void onRoomDestroyFailed();
4360    }
4361
4362	public interface OnAffiliationChanged {
4363		void onAffiliationChangedSuccessful(Jid jid);
4364
4365		void onAffiliationChangeFailed(Jid jid, int resId);
4366	}
4367
4368	public interface OnConversationUpdate {
4369		void onConversationUpdate();
4370	}
4371
4372	public interface OnAccountUpdate {
4373		void onAccountUpdate();
4374	}
4375
4376	public interface OnCaptchaRequested {
4377		void onCaptchaRequested(Account account, String id, Data data, Bitmap captcha);
4378	}
4379
4380	public interface OnRosterUpdate {
4381		void onRosterUpdate();
4382	}
4383
4384	public interface OnMucRosterUpdate {
4385		void onMucRosterUpdate();
4386	}
4387
4388	public interface OnConferenceConfigurationFetched {
4389		void onConferenceConfigurationFetched(Conversation conversation);
4390
4391		void onFetchFailed(Conversation conversation, Element error);
4392	}
4393
4394	public interface OnConferenceJoined {
4395		void onConferenceJoined(Conversation conversation);
4396	}
4397
4398	public interface OnConfigurationPushed {
4399		void onPushSucceeded();
4400
4401		void onPushFailed();
4402	}
4403
4404	public interface OnShowErrorToast {
4405		void onShowErrorToast(int resId);
4406	}
4407
4408	public class XmppConnectionBinder extends Binder {
4409		public XmppConnectionService getService() {
4410			return XmppConnectionService.this;
4411		}
4412	}
4413
4414	private class InternalEventReceiver extends BroadcastReceiver {
4415
4416        @Override
4417        public void onReceive(Context context, Intent intent) {
4418            onStartCommand(intent,0,0);
4419        }
4420    }
4421}