1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.annotation.TargetApi;
   5import android.app.AlarmManager;
   6import android.app.PendingIntent;
   7import android.app.Service;
   8import android.content.Context;
   9import android.content.Intent;
  10import android.content.IntentFilter;
  11import android.content.SharedPreferences;
  12import android.database.ContentObserver;
  13import android.graphics.Bitmap;
  14import android.media.AudioManager;
  15import android.net.ConnectivityManager;
  16import android.net.NetworkInfo;
  17import android.net.Uri;
  18import android.os.Binder;
  19import android.os.Build;
  20import android.os.Bundle;
  21import android.os.Environment;
  22import android.os.IBinder;
  23import android.os.PowerManager;
  24import android.os.PowerManager.WakeLock;
  25import android.os.SystemClock;
  26import android.preference.PreferenceManager;
  27import android.provider.ContactsContract;
  28import android.security.KeyChain;
  29import android.support.annotation.BoolRes;
  30import android.support.annotation.IntegerRes;
  31import android.support.v4.app.RemoteInput;
  32import android.util.DisplayMetrics;
  33import android.util.Log;
  34import android.util.LruCache;
  35import android.util.Pair;
  36
  37import net.java.otr4j.OtrException;
  38import net.java.otr4j.session.Session;
  39import net.java.otr4j.session.SessionID;
  40import net.java.otr4j.session.SessionImpl;
  41import net.java.otr4j.session.SessionStatus;
  42
  43import org.openintents.openpgp.IOpenPgpService2;
  44import org.openintents.openpgp.util.OpenPgpApi;
  45import org.openintents.openpgp.util.OpenPgpServiceConnection;
  46
  47import java.math.BigInteger;
  48import java.net.URL;
  49import java.security.SecureRandom;
  50import java.security.cert.CertificateException;
  51import java.security.cert.X509Certificate;
  52import java.util.ArrayList;
  53import java.util.Arrays;
  54import java.util.Collection;
  55import java.util.Collections;
  56import java.util.HashMap;
  57import java.util.HashSet;
  58import java.util.Hashtable;
  59import java.util.Iterator;
  60import java.util.List;
  61import java.util.ListIterator;
  62import java.util.Locale;
  63import java.util.Map;
  64import java.util.concurrent.CopyOnWriteArrayList;
  65import java.util.concurrent.CountDownLatch;
  66import java.util.concurrent.atomic.AtomicBoolean;
  67import java.util.concurrent.atomic.AtomicLong;
  68
  69import de.duenndns.ssl.MemorizingTrustManager;
  70import eu.siacs.conversations.Config;
  71import eu.siacs.conversations.R;
  72import eu.siacs.conversations.crypto.PgpDecryptionService;
  73import eu.siacs.conversations.crypto.PgpEngine;
  74import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  75import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  76import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  77import eu.siacs.conversations.entities.Account;
  78import eu.siacs.conversations.entities.Blockable;
  79import eu.siacs.conversations.entities.Bookmark;
  80import eu.siacs.conversations.entities.Contact;
  81import eu.siacs.conversations.entities.Conversation;
  82import eu.siacs.conversations.entities.DownloadableFile;
  83import eu.siacs.conversations.entities.Message;
  84import eu.siacs.conversations.entities.MucOptions;
  85import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  86import eu.siacs.conversations.entities.Presence;
  87import eu.siacs.conversations.entities.PresenceTemplate;
  88import eu.siacs.conversations.entities.Roster;
  89import eu.siacs.conversations.entities.ServiceDiscoveryResult;
  90import eu.siacs.conversations.entities.Transferable;
  91import eu.siacs.conversations.entities.TransferablePlaceholder;
  92import eu.siacs.conversations.generator.AbstractGenerator;
  93import eu.siacs.conversations.generator.IqGenerator;
  94import eu.siacs.conversations.generator.MessageGenerator;
  95import eu.siacs.conversations.generator.PresenceGenerator;
  96import eu.siacs.conversations.http.HttpConnectionManager;
  97import eu.siacs.conversations.http.AesGcmURLStreamHandlerFactory;
  98import eu.siacs.conversations.parser.AbstractParser;
  99import eu.siacs.conversations.parser.IqParser;
 100import eu.siacs.conversations.parser.MessageParser;
 101import eu.siacs.conversations.parser.PresenceParser;
 102import eu.siacs.conversations.persistance.DatabaseBackend;
 103import eu.siacs.conversations.persistance.FileBackend;
 104import eu.siacs.conversations.ui.SettingsActivity;
 105import eu.siacs.conversations.ui.UiCallback;
 106import eu.siacs.conversations.utils.ConversationsFileObserver;
 107import eu.siacs.conversations.utils.CryptoHelper;
 108import eu.siacs.conversations.utils.ExceptionHelper;
 109import eu.siacs.conversations.utils.MimeUtils;
 110import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
 111import eu.siacs.conversations.utils.PRNGFixes;
 112import eu.siacs.conversations.utils.PhoneHelper;
 113import eu.siacs.conversations.utils.ReplacingSerialSingleThreadExecutor;
 114import eu.siacs.conversations.utils.Resolver;
 115import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
 116import eu.siacs.conversations.xml.Namespace;
 117import eu.siacs.conversations.utils.XmppUri;
 118import eu.siacs.conversations.xml.Element;
 119import eu.siacs.conversations.xmpp.OnBindListener;
 120import eu.siacs.conversations.xmpp.OnContactStatusChanged;
 121import eu.siacs.conversations.xmpp.OnIqPacketReceived;
 122import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
 123import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
 124import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
 125import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
 126import eu.siacs.conversations.xmpp.OnStatusChanged;
 127import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
 128import eu.siacs.conversations.xmpp.Patches;
 129import eu.siacs.conversations.xmpp.XmppConnection;
 130import eu.siacs.conversations.xmpp.chatstate.ChatState;
 131import eu.siacs.conversations.xmpp.forms.Data;
 132import eu.siacs.conversations.xmpp.jid.InvalidJidException;
 133import eu.siacs.conversations.xmpp.jid.Jid;
 134import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 135import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
 136import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
 137import eu.siacs.conversations.xmpp.mam.MamReference;
 138import eu.siacs.conversations.xmpp.pep.Avatar;
 139import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 140import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 141import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 142import me.leolin.shortcutbadger.ShortcutBadger;
 143
 144public class XmppConnectionService extends Service {
 145
 146	static {
 147		URL.setURLStreamHandlerFactory(new AesGcmURLStreamHandlerFactory());
 148	}
 149
 150	public static final String ACTION_REPLY_TO_CONVERSATION = "reply_to_conversations";
 151	public static final String ACTION_MARK_AS_READ = "mark_as_read";
 152	public static final String ACTION_SNOOZE = "snooze";
 153	public static final String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 154	public static final String ACTION_DISMISS_ERROR_NOTIFICATIONS = "dismiss_error";
 155	public static final String ACTION_TRY_AGAIN = "try_again";
 156	public static final String ACTION_IDLE_PING = "idle_ping";
 157	private static final String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 158	public static final String ACTION_GCM_TOKEN_REFRESH = "gcm_token_refresh";
 159	public static final String ACTION_GCM_MESSAGE_RECEIVED = "gcm_message_received";
 160	private final SerialSingleThreadExecutor mFileAddingExecutor = new SerialSingleThreadExecutor("FileAdding");
 161	private final SerialSingleThreadExecutor mVideoCompressionExecutor = new SerialSingleThreadExecutor("VideoCompression");
 162	private final SerialSingleThreadExecutor mDatabaseWriterExecutor = new SerialSingleThreadExecutor("DatabaseWriter");
 163	private final SerialSingleThreadExecutor mDatabaseReaderExecutor = new SerialSingleThreadExecutor("DatabaseReader");
 164	private final SerialSingleThreadExecutor mNotificationExecutor = new SerialSingleThreadExecutor("NotificationExecutor");
 165	private ReplacingSerialSingleThreadExecutor mContactMergerExecutor = new ReplacingSerialSingleThreadExecutor(true);
 166	private final IBinder mBinder = new XmppConnectionBinder();
 167	private final List<Conversation> conversations = new CopyOnWriteArrayList<>();
 168	private final IqGenerator mIqGenerator = new IqGenerator(this);
 169	private final List<String> mInProgressAvatarFetches = new ArrayList<>();
 170	private final HashSet<Jid> mLowPingTimeoutMode = new HashSet<>();
 171
 172	private long mLastActivity = 0;
 173
 174	public DatabaseBackend databaseBackend;
 175	private ContentObserver contactObserver = new ContentObserver(null) {
 176		@Override
 177		public void onChange(boolean selfChange) {
 178			super.onChange(selfChange);
 179			Intent intent = new Intent(getApplicationContext(),
 180					XmppConnectionService.class);
 181			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 182			startService(intent);
 183		}
 184	};
 185	private FileBackend fileBackend = new FileBackend(this);
 186	private MemorizingTrustManager mMemorizingTrustManager;
 187	private NotificationService mNotificationService = new NotificationService(this);
 188	private ShortcutService mShortcutService = new ShortcutService(this);
 189	private AtomicBoolean mInitialAddressbookSyncCompleted = new AtomicBoolean(false);
 190	private AtomicBoolean mForceForegroundService = new AtomicBoolean(false);
 191	private OnMessagePacketReceived mMessageParser = new MessageParser(this);
 192	private OnPresencePacketReceived mPresenceParser = new PresenceParser(this);
 193	private IqParser mIqParser = new IqParser(this);
 194	private OnIqPacketReceived mDefaultIqHandler = new OnIqPacketReceived() {
 195		@Override
 196		public void onIqPacketReceived(Account account, IqPacket packet) {
 197			if (packet.getType() != IqPacket.TYPE.RESULT) {
 198				Element error = packet.findChild("error");
 199				String text = error != null ? error.findChildContent("text") : null;
 200				if (text != null) {
 201					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": received iq error - " + text);
 202				}
 203			}
 204		}
 205	};
 206	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 207	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 208	private List<Account> accounts;
 209	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 210			this);
 211	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 212
 213		@Override
 214		public void onContactStatusChanged(Contact contact, boolean online) {
 215			Conversation conversation = find(getConversations(), contact);
 216			if (conversation != null) {
 217				if (online) {
 218					conversation.endOtrIfNeeded();
 219					if (contact.getPresences().size() == 1) {
 220						sendUnsentMessages(conversation);
 221					}
 222				} else {
 223					//check if the resource we are haveing a conversation with is still online
 224					if (conversation.hasValidOtrSession()) {
 225						String otrResource = conversation.getOtrSession().getSessionID().getUserID();
 226						if (!(Arrays.asList(contact.getPresences().toResourceArray()).contains(otrResource))) {
 227							conversation.endOtrIfNeeded();
 228						}
 229					}
 230				}
 231			}
 232		}
 233	};
 234	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 235			this);
 236	private AvatarService mAvatarService = new AvatarService(this);
 237	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 238	private PushManagementService mPushManagementService = new PushManagementService(this);
 239	private OnConversationUpdate mOnConversationUpdate = null;
 240
 241
 242	private final ConversationsFileObserver fileObserver = new ConversationsFileObserver(
 243			Environment.getExternalStorageDirectory().getAbsolutePath()
 244	) {
 245		@Override
 246		public void onEvent(int event, String path) {
 247			markFileDeleted(path);
 248		}
 249	};
 250	private final OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 251
 252		@Override
 253		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 254			mJingleConnectionManager.deliverPacket(account, packet);
 255		}
 256	};
 257	private final OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 258
 259		@Override
 260		public void onMessageAcknowledged(Account account, String uuid) {
 261			for (final Conversation conversation : getConversations()) {
 262				if (conversation.getAccount() == account) {
 263					Message message = conversation.findUnsentMessageWithUuid(uuid);
 264					if (message != null) {
 265						markMessage(message, Message.STATUS_SEND);
 266					}
 267				}
 268			}
 269		}
 270	};
 271	private int convChangedListenerCount = 0;
 272	private OnShowErrorToast mOnShowErrorToast = null;
 273	private int showErrorToastListenerCount = 0;
 274	private int unreadCount = -1;
 275	private OnAccountUpdate mOnAccountUpdate = null;
 276	private OnCaptchaRequested mOnCaptchaRequested = null;
 277	private int accountChangedListenerCount = 0;
 278	private int captchaRequestedListenerCount = 0;
 279	private OnRosterUpdate mOnRosterUpdate = null;
 280	private OnUpdateBlocklist mOnUpdateBlocklist = null;
 281	private int updateBlocklistListenerCount = 0;
 282	private int rosterChangedListenerCount = 0;
 283	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 284	private int mucRosterChangedListenerCount = 0;
 285	private OnKeyStatusUpdated mOnKeyStatusUpdated = null;
 286	private int keyStatusUpdatedListenerCount = 0;
 287	private AtomicLong mLastExpiryRun = new AtomicLong(0);
 288	private SecureRandom mRandom;
 289	private LruCache<Pair<String, String>, ServiceDiscoveryResult> discoCache = new LruCache<>(20);
 290	private final OnBindListener mOnBindListener = new OnBindListener() {
 291
 292		@Override
 293		public void onBind(final Account account) {
 294			synchronized (mInProgressAvatarFetches) {
 295				for (Iterator<String> iterator = mInProgressAvatarFetches.iterator(); iterator.hasNext(); ) {
 296					final String KEY = iterator.next();
 297					if (KEY.startsWith(account.getJid().toBareJid() + "_")) {
 298						iterator.remove();
 299					}
 300				}
 301			}
 302			if (account.setOption(Account.OPTION_LOGGED_IN_SUCCESSFULLY, true)) {
 303				databaseBackend.updateAccount(account);
 304			}
 305			account.getRoster().clearPresences();
 306			mJingleConnectionManager.cancelInTransmission();
 307			fetchRosterFromServer(account);
 308			fetchBookmarks(account);
 309			final boolean flexible= account.getXmppConnection().getFeatures().flexibleOfflineMessageRetrieval();
 310			final boolean catchup = getMessageArchiveService().inCatchup(account);
 311			if (flexible && catchup) {
 312				sendIqPacket(account, mIqGenerator.purgeOfflineMessages(), (acc, packet) -> {
 313					if (packet.getType() == IqPacket.TYPE.RESULT) {
 314						Log.d(Config.LOGTAG, acc.getJid().toBareJid()+": successfully purged offline messages");
 315					}
 316				});
 317			}
 318			sendPresence(account);
 319			if (mPushManagementService.available(account)) {
 320				mPushManagementService.registerPushTokenOnServer(account);
 321			}
 322			connectMultiModeConversations(account);
 323			syncDirtyContacts(account);
 324		}
 325	};
 326	private OnStatusChanged statusListener = new OnStatusChanged() {
 327
 328		@Override
 329		public void onStatusChanged(final Account account) {
 330			XmppConnection connection = account.getXmppConnection();
 331			if (mOnAccountUpdate != null) {
 332				mOnAccountUpdate.onAccountUpdate();
 333			}
 334			if (account.getStatus() == Account.State.ONLINE) {
 335				synchronized (mLowPingTimeoutMode) {
 336					if (mLowPingTimeoutMode.remove(account.getJid().toBareJid())) {
 337						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": leaving low ping timeout mode");
 338					}
 339				}
 340				if (account.setShowErrorNotification(true)) {
 341					databaseBackend.updateAccount(account);
 342				}
 343				mMessageArchiveService.executePendingQueries(account);
 344				if (connection != null && connection.getFeatures().csi()) {
 345					if (checkListeners()) {
 346						Log.d(Config.LOGTAG, account.getJid().toBareJid() + " sending csi//inactive");
 347						connection.sendInactive();
 348					} else {
 349						Log.d(Config.LOGTAG, account.getJid().toBareJid() + " sending csi//active");
 350						connection.sendActive();
 351					}
 352				}
 353				List<Conversation> conversations = getConversations();
 354				for (Conversation conversation : conversations) {
 355					if (conversation.getAccount() == account
 356							&& !account.pendingConferenceJoins.contains(conversation)) {
 357						if (!conversation.startOtrIfNeeded()) {
 358							Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": couldn't start OTR with " + conversation.getContact().getJid() + " when needed");
 359						}
 360						sendUnsentMessages(conversation);
 361					}
 362				}
 363				for (Conversation conversation : account.pendingConferenceLeaves) {
 364					leaveMuc(conversation);
 365				}
 366				account.pendingConferenceLeaves.clear();
 367				for (Conversation conversation : account.pendingConferenceJoins) {
 368					joinMuc(conversation);
 369				}
 370				account.pendingConferenceJoins.clear();
 371				scheduleWakeUpCall(Config.PING_MAX_INTERVAL, account.getUuid().hashCode());
 372			} else if (account.getStatus() == Account.State.OFFLINE || account.getStatus() == Account.State.DISABLED) {
 373				resetSendingToWaiting(account);
 374				if (account.isEnabled() && isInLowPingTimeoutMode(account)) {
 375					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": went into offline state during low ping mode. reconnecting now");
 376					reconnectAccount(account, true, false);
 377				} else {
 378					int timeToReconnect = mRandom.nextInt(10) + 2;
 379					scheduleWakeUpCall(timeToReconnect, account.getUuid().hashCode());
 380				}
 381			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 382				databaseBackend.updateAccount(account);
 383				reconnectAccount(account, true, false);
 384			} else if (account.getStatus() != Account.State.CONNECTING && account.getStatus() != Account.State.NO_INTERNET) {
 385				resetSendingToWaiting(account);
 386				if (connection != null && account.getStatus().isAttemptReconnect()) {
 387					final int next = connection.getTimeToNextAttempt();
 388					final boolean lowPingTimeoutMode = isInLowPingTimeoutMode(account);
 389					if (next <= 0) {
 390						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": error connecting account. reconnecting now. lowPingTimeout=" + Boolean.toString(lowPingTimeoutMode));
 391						reconnectAccount(account, true, false);
 392					} else {
 393						final int attempt = connection.getAttempt() + 1;
 394						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": error connecting account. try again in " + next + "s for the " + attempt + " time. lowPingTimeout=" + Boolean.toString(lowPingTimeoutMode));
 395						scheduleWakeUpCall(next, account.getUuid().hashCode());
 396					}
 397				}
 398			}
 399			getNotificationService().updateErrorNotification();
 400		}
 401	};
 402
 403	private boolean isInLowPingTimeoutMode(Account account) {
 404		synchronized (mLowPingTimeoutMode) {
 405			return mLowPingTimeoutMode.contains(account.getJid().toBareJid());
 406		}
 407	}
 408
 409	public void startForcingForegroundNotification() {
 410		mForceForegroundService.set(true);
 411		toggleForegroundService();
 412	}
 413
 414	public void stopForcingForegroundNotification() {
 415		mForceForegroundService.set(false);
 416		toggleForegroundService();
 417	}
 418
 419	private OpenPgpServiceConnection pgpServiceConnection;
 420	private PgpEngine mPgpEngine = null;
 421	private WakeLock wakeLock;
 422	private PowerManager pm;
 423	private LruCache<String, Bitmap> mBitmapCache;
 424	private EventReceiver mEventReceiver = new EventReceiver();
 425
 426	public final CountDownLatch restoredFromDatabaseLatch = new CountDownLatch(1);
 427
 428	private static String generateFetchKey(Account account, final Avatar avatar) {
 429		return account.getJid().toBareJid() + "_" + avatar.owner + "_" + avatar.sha1sum;
 430	}
 431
 432	public boolean areMessagesInitialized() {
 433		return this.restoredFromDatabaseLatch.getCount() == 0;
 434	}
 435
 436	public PgpEngine getPgpEngine() {
 437		if (!Config.supportOpenPgp()) {
 438			return null;
 439		} else if (pgpServiceConnection != null && pgpServiceConnection.isBound()) {
 440			if (this.mPgpEngine == null) {
 441				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 442						getApplicationContext(),
 443						pgpServiceConnection.getService()), this);
 444			}
 445			return mPgpEngine;
 446		} else {
 447			return null;
 448		}
 449
 450	}
 451
 452	public OpenPgpApi getOpenPgpApi() {
 453		if (!Config.supportOpenPgp()) {
 454			return null;
 455		} else if (pgpServiceConnection != null && pgpServiceConnection.isBound()) {
 456			return new OpenPgpApi(this, pgpServiceConnection.getService());
 457		} else {
 458			return null;
 459		}
 460	}
 461
 462	public FileBackend getFileBackend() {
 463		return this.fileBackend;
 464	}
 465
 466	public AvatarService getAvatarService() {
 467		return this.mAvatarService;
 468	}
 469
 470	public void attachLocationToConversation(final Conversation conversation,
 471	                                         final Uri uri,
 472	                                         final UiCallback<Message> callback) {
 473		int encryption = conversation.getNextEncryption();
 474		if (encryption == Message.ENCRYPTION_PGP) {
 475			encryption = Message.ENCRYPTION_DECRYPTED;
 476		}
 477		Message message = new Message(conversation, uri.toString(), encryption);
 478		if (conversation.getNextCounterpart() != null) {
 479			message.setCounterpart(conversation.getNextCounterpart());
 480		}
 481		if (encryption == Message.ENCRYPTION_DECRYPTED) {
 482			getPgpEngine().encrypt(message, callback);
 483		} else {
 484			callback.success(message);
 485		}
 486	}
 487
 488	public void attachFileToConversation(final Conversation conversation,
 489	                                     final Uri uri,
 490	                                     final UiCallback<Message> callback) {
 491		if (FileBackend.weOwnFile(this, uri)) {
 492			Log.d(Config.LOGTAG, "trying to attach file that belonged to us");
 493			callback.error(R.string.security_error_invalid_file_access, null);
 494			return;
 495		}
 496		final Message message;
 497		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 498			message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
 499		} else {
 500			message = new Message(conversation, "", conversation.getNextEncryption());
 501		}
 502		message.setCounterpart(conversation.getNextCounterpart());
 503		message.setType(Message.TYPE_FILE);
 504		final AttachFileToConversationRunnable runnable = new AttachFileToConversationRunnable(this, uri, message, callback);
 505		if (runnable.isVideoMessage()) {
 506			mVideoCompressionExecutor.execute(runnable);
 507		} else {
 508			mFileAddingExecutor.execute(runnable);
 509		}
 510	}
 511
 512	public void attachImageToConversation(final Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 513		if (FileBackend.weOwnFile(this, uri)) {
 514			Log.d(Config.LOGTAG, "trying to attach file that belonged to us");
 515			callback.error(R.string.security_error_invalid_file_access, null);
 516			return;
 517		}
 518
 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			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": not compressing picture. sending as file");
 526			attachFileToConversation(conversation, uri, callback);
 527			return;
 528		}
 529		final Message message;
 530		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 531			message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
 532		} else {
 533			message = new Message(conversation, "", conversation.getNextEncryption());
 534		}
 535		message.setCounterpart(conversation.getNextCounterpart());
 536		message.setType(Message.TYPE_IMAGE);
 537		mFileAddingExecutor.execute(new Runnable() {
 538
 539			@Override
 540			public void run() {
 541				try {
 542					getFileBackend().copyImageToPrivateStorage(message, uri);
 543					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 544						final PgpEngine pgpEngine = getPgpEngine();
 545						if (pgpEngine != null) {
 546							pgpEngine.encrypt(message, callback);
 547						} else if (callback != null) {
 548							callback.error(R.string.unable_to_connect_to_keychain, null);
 549						}
 550					} else {
 551						callback.success(message);
 552					}
 553				} catch (final FileBackend.FileCopyException e) {
 554					callback.error(e.getResId(), message);
 555				}
 556			}
 557		});
 558	}
 559
 560	public Conversation find(Bookmark bookmark) {
 561		return find(bookmark.getAccount(), bookmark.getJid());
 562	}
 563
 564	public Conversation find(final Account account, final Jid jid) {
 565		return find(getConversations(), account, jid);
 566	}
 567
 568	@Override
 569	public int onStartCommand(Intent intent, int flags, int startId) {
 570		final String action = intent == null ? null : intent.getAction();
 571		String pushedAccountHash = null;
 572		boolean interactive = false;
 573		if (action != null) {
 574			final String uuid = intent.getStringExtra("uuid");
 575			switch (action) {
 576				case ConnectivityManager.CONNECTIVITY_ACTION:
 577					if (hasInternetConnection() && Config.RESET_ATTEMPT_COUNT_ON_NETWORK_CHANGE) {
 578						resetAllAttemptCounts(true, false);
 579					}
 580					break;
 581				case ACTION_MERGE_PHONE_CONTACTS:
 582					if (restoredFromDatabaseLatch.getCount() == 0) {
 583						loadPhoneContacts();
 584					}
 585					return START_STICKY;
 586				case Intent.ACTION_SHUTDOWN:
 587					logoutAndSave(true);
 588					return START_NOT_STICKY;
 589				case ACTION_CLEAR_NOTIFICATION:
 590					mNotificationExecutor.execute(() -> {
 591						try {
 592							final Conversation c = findConversationByUuid(uuid);
 593							if (c != null) {
 594								mNotificationService.clear(c);
 595							} else {
 596								mNotificationService.clear();
 597							}
 598							restoredFromDatabaseLatch.await();
 599
 600						} catch (InterruptedException e) {
 601							Log.d(Config.LOGTAG,"unable to process clear notification");
 602						}
 603					});
 604					break;
 605				case ACTION_DISMISS_ERROR_NOTIFICATIONS:
 606					dismissErrorNotifications();
 607					break;
 608				case ACTION_TRY_AGAIN:
 609					resetAllAttemptCounts(false, true);
 610					interactive = true;
 611					break;
 612				case ACTION_REPLY_TO_CONVERSATION:
 613					Bundle remoteInput = RemoteInput.getResultsFromIntent(intent);
 614					if (remoteInput == null) {
 615						break;
 616					}
 617					final CharSequence body = remoteInput.getCharSequence("text_reply");
 618					final boolean dismissNotification = intent.getBooleanExtra("dismiss_notification", false);
 619					if (body == null || body.length() <= 0) {
 620						break;
 621					}
 622					mNotificationExecutor.execute(()-> {
 623						try {
 624							restoredFromDatabaseLatch.await();
 625							final Conversation c = findConversationByUuid(uuid);
 626							if (c != null) {
 627								directReply(c, body.toString(), dismissNotification);
 628							}
 629						} catch (InterruptedException e) {
 630							Log.d(Config.LOGTAG,"unable to process direct reply");
 631						}
 632					});
 633					break;
 634				case ACTION_MARK_AS_READ:
 635					mNotificationExecutor.execute(() -> {
 636						final Conversation c = findConversationByUuid(uuid);
 637						if (c == null) {
 638							Log.d(Config.LOGTAG, "received mark read intent for unknown conversation (" + uuid + ")");
 639							return;
 640						}
 641						try {
 642							restoredFromDatabaseLatch.await();
 643							sendReadMarker(c);
 644						} catch (InterruptedException e) {
 645							Log.d(Config.LOGTAG,"unable to process notification read marker for conversation "+c.getName());
 646						}
 647
 648					});
 649					break;
 650				case ACTION_SNOOZE:
 651					mNotificationExecutor.execute(() -> {
 652						final Conversation c = findConversationByUuid(uuid);
 653						if (c == null) {
 654							Log.d(Config.LOGTAG,"received snooze intent for unknown conversation ("+ uuid +")");
 655							return;
 656						}
 657						c.setMutedTill(System.currentTimeMillis() + 30 * 60 * 1000);
 658						mNotificationService.clear(c);
 659						updateConversation(c);
 660					});
 661				case AudioManager.RINGER_MODE_CHANGED_ACTION:
 662					if (dndOnSilentMode()) {
 663						refreshAllPresences();
 664					}
 665					break;
 666				case Intent.ACTION_SCREEN_ON:
 667					deactivateGracePeriod();
 668				case Intent.ACTION_SCREEN_OFF:
 669					if (awayWhenScreenOff()) {
 670						refreshAllPresences();
 671					}
 672					break;
 673				case ACTION_GCM_TOKEN_REFRESH:
 674					refreshAllGcmTokens();
 675					break;
 676				case ACTION_IDLE_PING:
 677					if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 678						scheduleNextIdlePing();
 679					}
 680					break;
 681				case ACTION_GCM_MESSAGE_RECEIVED:
 682					Log.d(Config.LOGTAG, "gcm push message arrived in service. extras=" + intent.getExtras());
 683					pushedAccountHash = intent.getStringExtra("account");
 684					break;
 685				case Intent.ACTION_SEND:
 686					Uri uri = intent.getData();
 687					if (uri != null) {
 688						Log.d(Config.LOGTAG, "received uri permission for "+uri.toString());
 689					}
 690					return START_STICKY;
 691			}
 692		}
 693		synchronized (this) {
 694			this.wakeLock.acquire();
 695			boolean pingNow = ConnectivityManager.CONNECTIVITY_ACTION.equals(action);
 696			HashSet<Account> pingCandidates = new HashSet<>();
 697			for (Account account : accounts) {
 698				pingNow |= processAccountState(account,
 699						interactive,
 700						"ui".equals(action),
 701						CryptoHelper.getAccountFingerprint(account).equals(pushedAccountHash),
 702						pingCandidates);
 703			}
 704			if (pingNow) {
 705				for (Account account : pingCandidates) {
 706					final boolean lowTimeout = isInLowPingTimeoutMode(account);
 707					account.getXmppConnection().sendPing();
 708					Log.d(Config.LOGTAG, account.getJid().toBareJid() + " send ping (action=" + action + ",lowTimeout=" + Boolean.toString(lowTimeout) + ")");
 709					scheduleWakeUpCall(lowTimeout ? Config.LOW_PING_TIMEOUT : Config.PING_TIMEOUT, account.getUuid().hashCode());
 710				}
 711			}
 712			if (wakeLock.isHeld()) {
 713				try {
 714					wakeLock.release();
 715				} catch (final RuntimeException ignored) {
 716				}
 717			}
 718		}
 719		if (SystemClock.elapsedRealtime() - mLastExpiryRun.get() >= Config.EXPIRY_INTERVAL) {
 720			expireOldMessages();
 721		}
 722		return START_STICKY;
 723	}
 724
 725	private boolean processAccountState(Account account, boolean interactive, boolean isUiAction, boolean isAccountPushed, HashSet<Account> pingCandidates) {
 726		boolean pingNow = false;
 727		if (account.getStatus().isAttemptReconnect()) {
 728			if (!hasInternetConnection()) {
 729				account.setStatus(Account.State.NO_INTERNET);
 730				if (statusListener != null) {
 731					statusListener.onStatusChanged(account);
 732				}
 733			} else {
 734				if (account.getStatus() == Account.State.NO_INTERNET) {
 735					account.setStatus(Account.State.OFFLINE);
 736					if (statusListener != null) {
 737						statusListener.onStatusChanged(account);
 738					}
 739				}
 740				if (account.getStatus() == Account.State.ONLINE) {
 741					synchronized (mLowPingTimeoutMode) {
 742						long lastReceived = account.getXmppConnection().getLastPacketReceived();
 743						long lastSent = account.getXmppConnection().getLastPingSent();
 744						long pingInterval = isUiAction ? Config.PING_MIN_INTERVAL * 1000 : Config.PING_MAX_INTERVAL * 1000;
 745						long msToNextPing = (Math.max(lastReceived, lastSent) + pingInterval) - SystemClock.elapsedRealtime();
 746						int pingTimeout = mLowPingTimeoutMode.contains(account.getJid().toBareJid()) ? Config.LOW_PING_TIMEOUT * 1000 : Config.PING_TIMEOUT * 1000;
 747						long pingTimeoutIn = (lastSent + pingTimeout) - SystemClock.elapsedRealtime();
 748						if (lastSent > lastReceived) {
 749							if (pingTimeoutIn < 0) {
 750								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": ping timeout");
 751								this.reconnectAccount(account, true, interactive);
 752							} else {
 753								int secs = (int) (pingTimeoutIn / 1000);
 754								this.scheduleWakeUpCall(secs, account.getUuid().hashCode());
 755							}
 756						} else {
 757							pingCandidates.add(account);
 758							if (isAccountPushed) {
 759								pingNow = true;
 760								if (mLowPingTimeoutMode.add(account.getJid().toBareJid())) {
 761									Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": entering low ping timeout mode");
 762								}
 763							} else if (msToNextPing <= 0) {
 764								pingNow = true;
 765							} else {
 766								this.scheduleWakeUpCall((int) (msToNextPing / 1000), account.getUuid().hashCode());
 767								if (mLowPingTimeoutMode.remove(account.getJid().toBareJid())) {
 768									Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": leaving low ping timeout mode");
 769								}
 770							}
 771						}
 772					}
 773				} else if (account.getStatus() == Account.State.OFFLINE) {
 774					reconnectAccount(account, true, interactive);
 775				} else if (account.getStatus() == Account.State.CONNECTING) {
 776					long secondsSinceLastConnect = (SystemClock.elapsedRealtime() - account.getXmppConnection().getLastConnect()) / 1000;
 777					long secondsSinceLastDisco = (SystemClock.elapsedRealtime() - account.getXmppConnection().getLastDiscoStarted()) / 1000;
 778					long discoTimeout = Config.CONNECT_DISCO_TIMEOUT - secondsSinceLastDisco;
 779					long timeout = Config.CONNECT_TIMEOUT - secondsSinceLastConnect;
 780					if (timeout < 0) {
 781						Log.d(Config.LOGTAG, account.getJid() + ": time out during connect reconnecting (secondsSinceLast=" + secondsSinceLastConnect + ")");
 782						account.getXmppConnection().resetAttemptCount(false);
 783						reconnectAccount(account, true, interactive);
 784					} else if (discoTimeout < 0) {
 785						account.getXmppConnection().sendDiscoTimeout();
 786						scheduleWakeUpCall((int) Math.min(timeout, discoTimeout), account.getUuid().hashCode());
 787					} else {
 788						scheduleWakeUpCall((int) Math.min(timeout, discoTimeout), account.getUuid().hashCode());
 789					}
 790				} else {
 791					if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 792						reconnectAccount(account, true, interactive);
 793					}
 794				}
 795			}
 796		}
 797		return pingNow;
 798	}
 799
 800	public boolean isDataSaverDisabled() {
 801		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 802			ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
 803			return !connectivityManager.isActiveNetworkMetered()
 804					|| connectivityManager.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED;
 805		} else {
 806			return true;
 807		}
 808	}
 809
 810	private void directReply(Conversation conversation, String body, final boolean dismissAfterReply) {
 811		Message message = new Message(conversation, body, conversation.getNextEncryption());
 812		message.markUnread();
 813		if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 814			getPgpEngine().encrypt(message, new UiCallback<Message>() {
 815				@Override
 816				public void success(Message message) {
 817					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 818					sendMessage(message);
 819					if (dismissAfterReply) {
 820						markRead(message.getConversation(), true);
 821					} else {
 822						mNotificationService.pushFromDirectReply(message);
 823					}
 824				}
 825
 826				@Override
 827				public void error(int errorCode, Message object) {
 828
 829				}
 830
 831				@Override
 832				public void userInputRequried(PendingIntent pi, Message object) {
 833
 834				}
 835			});
 836		} else {
 837			sendMessage(message);
 838			if (dismissAfterReply) {
 839				markRead(conversation, true);
 840			} else {
 841				mNotificationService.pushFromDirectReply(message);
 842			}
 843		}
 844	}
 845
 846	private boolean dndOnSilentMode() {
 847		return getBooleanPreference(SettingsActivity.DND_ON_SILENT_MODE, R.bool.dnd_on_silent_mode);
 848	}
 849
 850	private boolean manuallyChangePresence() {
 851		return getBooleanPreference(SettingsActivity.MANUALLY_CHANGE_PRESENCE, R.bool.manually_change_presence);
 852	}
 853
 854	private boolean treatVibrateAsSilent() {
 855		return getBooleanPreference(SettingsActivity.TREAT_VIBRATE_AS_SILENT, R.bool.treat_vibrate_as_silent);
 856	}
 857
 858	private boolean awayWhenScreenOff() {
 859		return getBooleanPreference(SettingsActivity.AWAY_WHEN_SCREEN_IS_OFF, R.bool.away_when_screen_off);
 860	}
 861
 862	private String getCompressPicturesPreference() {
 863		return getPreferences().getString("picture_compression", getResources().getString(R.string.picture_compression));
 864	}
 865
 866	private Presence.Status getTargetPresence() {
 867		if (dndOnSilentMode() && isPhoneSilenced()) {
 868			return Presence.Status.DND;
 869		} else if (awayWhenScreenOff() && !isInteractive()) {
 870			return Presence.Status.AWAY;
 871		} else {
 872			return Presence.Status.ONLINE;
 873		}
 874	}
 875
 876	@SuppressLint("NewApi")
 877	@SuppressWarnings("deprecation")
 878	public boolean isInteractive() {
 879		final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 880
 881		final boolean isScreenOn;
 882		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
 883			isScreenOn = pm.isScreenOn();
 884		} else {
 885			isScreenOn = pm.isInteractive();
 886		}
 887		return isScreenOn;
 888	}
 889
 890	private boolean isPhoneSilenced() {
 891		AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
 892		try {
 893			if (treatVibrateAsSilent()) {
 894				return audioManager.getRingerMode() != AudioManager.RINGER_MODE_NORMAL;
 895			} else {
 896				return audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT;
 897			}
 898		} catch (Throwable throwable) {
 899			Log.d(Config.LOGTAG, "platform bug in isPhoneSilenced (" + throwable.getMessage() + ")");
 900			return false;
 901		}
 902	}
 903
 904	private void resetAllAttemptCounts(boolean reallyAll, boolean retryImmediately) {
 905		Log.d(Config.LOGTAG, "resetting all attempt counts");
 906		for (Account account : accounts) {
 907			if (account.hasErrorStatus() || reallyAll) {
 908				final XmppConnection connection = account.getXmppConnection();
 909				if (connection != null) {
 910					connection.resetAttemptCount(retryImmediately);
 911				}
 912			}
 913			if (account.setShowErrorNotification(true)) {
 914				databaseBackend.updateAccount(account);
 915			}
 916		}
 917		mNotificationService.updateErrorNotification();
 918	}
 919
 920	private void dismissErrorNotifications() {
 921		for (final Account account : this.accounts) {
 922			if (account.hasErrorStatus()) {
 923				Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": dismissing error notification");
 924				if (account.setShowErrorNotification(false)) {
 925					databaseBackend.updateAccount(account);
 926				}
 927			}
 928		}
 929	}
 930
 931	private void expireOldMessages() {
 932		expireOldMessages(false);
 933	}
 934
 935	public void expireOldMessages(final boolean resetHasMessagesLeftOnServer) {
 936		mLastExpiryRun.set(SystemClock.elapsedRealtime());
 937		mDatabaseWriterExecutor.execute(new Runnable() {
 938			@Override
 939			public void run() {
 940				long timestamp = getAutomaticMessageDeletionDate();
 941				if (timestamp > 0) {
 942					databaseBackend.expireOldMessages(timestamp);
 943					synchronized (XmppConnectionService.this.conversations) {
 944						for (Conversation conversation : XmppConnectionService.this.conversations) {
 945							conversation.expireOldMessages(timestamp);
 946							if (resetHasMessagesLeftOnServer) {
 947								conversation.messagesLoaded.set(true);
 948								conversation.setHasMessagesLeftOnServer(true);
 949							}
 950						}
 951					}
 952					updateConversationUi();
 953				}
 954			}
 955		});
 956	}
 957
 958	public boolean hasInternetConnection() {
 959		final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 960		try {
 961			final NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 962			return activeNetwork != null && activeNetwork.isConnected();
 963		} catch (RuntimeException e) {
 964			Log.d(Config.LOGTAG,"unable to check for internet connection",e);
 965			return true; //if internet connection can not be checked it is probably best to just try
 966		}
 967	}
 968
 969	@SuppressLint("TrulyRandom")
 970	@Override
 971	public void onCreate() {
 972		ExceptionHelper.init(getApplicationContext());
 973		PRNGFixes.apply();
 974		Resolver.init(this);
 975		this.mRandom = new SecureRandom();
 976		updateMemorizingTrustmanager();
 977		final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 978		final int cacheSize = maxMemory / 8;
 979		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 980			@Override
 981			protected int sizeOf(final String key, final Bitmap bitmap) {
 982				return bitmap.getByteCount() / 1024;
 983			}
 984		};
 985
 986		Log.d(Config.LOGTAG, "initializing database...");
 987		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 988		Log.d(Config.LOGTAG, "restoring accounts...");
 989		this.accounts = databaseBackend.getAccounts();
 990		final SharedPreferences.Editor editor = getPreferences().edit();
 991		if (this.accounts.size() == 0 && Arrays.asList("Sony", "Sony Ericsson").contains(Build.MANUFACTURER)) {
 992			editor.putBoolean(SettingsActivity.KEEP_FOREGROUND_SERVICE, true);
 993			Log.d(Config.LOGTAG, Build.MANUFACTURER + " is on blacklist. enabling foreground service");
 994		}
 995		editor.putBoolean(EventReceiver.SETTING_ENABLED_ACCOUNTS, hasEnabledAccounts()).apply();
 996		editor.apply();
 997
 998		restoreFromDatabase();
 999
1000		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
1001		new Thread(new Runnable() {
1002			@Override
1003			public void run() {
1004				fileObserver.startWatching();
1005			}
1006		}).start();
1007		if (Config.supportOpenPgp()) {
1008			this.pgpServiceConnection = new OpenPgpServiceConnection(this, "org.sufficientlysecure.keychain", new OpenPgpServiceConnection.OnBound() {
1009				@Override
1010				public void onBound(IOpenPgpService2 service) {
1011					for (Account account : accounts) {
1012						final PgpDecryptionService pgp = account.getPgpDecryptionService();
1013						if (pgp != null) {
1014							pgp.continueDecryption(true);
1015						}
1016					}
1017				}
1018
1019				@Override
1020				public void onError(Exception e) {
1021				}
1022			});
1023			this.pgpServiceConnection.bindToService();
1024		}
1025
1026		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
1027		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "XmppConnectionService");
1028
1029		toggleForegroundService();
1030		updateUnreadCountBadge();
1031		toggleScreenEventReceiver();
1032		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1033			scheduleNextIdlePing();
1034		}
1035		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
1036			registerReceiver(this.mEventReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
1037		}
1038	}
1039
1040	@Override
1041	public void onTrimMemory(int level) {
1042		super.onTrimMemory(level);
1043		if (level >= TRIM_MEMORY_COMPLETE) {
1044			Log.d(Config.LOGTAG, "clear cache due to low memory");
1045			getBitmapCache().evictAll();
1046		}
1047	}
1048
1049	@Override
1050	public void onDestroy() {
1051		try {
1052			unregisterReceiver(this.mEventReceiver);
1053		} catch (IllegalArgumentException e) {
1054			//ignored
1055		}
1056		fileObserver.stopWatching();
1057		super.onDestroy();
1058	}
1059
1060	public void toggleScreenEventReceiver() {
1061		if (awayWhenScreenOff() && !manuallyChangePresence()) {
1062			final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
1063			filter.addAction(Intent.ACTION_SCREEN_OFF);
1064			registerReceiver(this.mEventReceiver, filter);
1065		} else {
1066			try {
1067				unregisterReceiver(this.mEventReceiver);
1068			} catch (IllegalArgumentException e) {
1069				//ignored
1070			}
1071		}
1072	}
1073
1074	public void toggleForegroundService() {
1075		if (mForceForegroundService.get() || (keepForegroundService() && hasEnabledAccounts())) {
1076			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
1077			Log.d(Config.LOGTAG, "started foreground service");
1078		} else {
1079			stopForeground(true);
1080			Log.d(Config.LOGTAG, "stopped foreground service");
1081		}
1082	}
1083
1084	public boolean keepForegroundService() {
1085		return getBooleanPreference(SettingsActivity.KEEP_FOREGROUND_SERVICE, R.bool.enable_foreground_service);
1086	}
1087
1088	@Override
1089	public void onTaskRemoved(final Intent rootIntent) {
1090		super.onTaskRemoved(rootIntent);
1091		if (keepForegroundService() || mForceForegroundService.get()) {
1092			Log.d(Config.LOGTAG, "ignoring onTaskRemoved because foreground service is activated");
1093		} else {
1094			this.logoutAndSave(false);
1095		}
1096	}
1097
1098	private void logoutAndSave(boolean stop) {
1099		int activeAccounts = 0;
1100		for (final Account account : accounts) {
1101			if (account.getStatus() != Account.State.DISABLED) {
1102				activeAccounts++;
1103			}
1104			databaseBackend.writeRoster(account.getRoster());
1105			if (account.getXmppConnection() != null) {
1106				new Thread(new Runnable() {
1107					@Override
1108					public void run() {
1109						disconnect(account, false);
1110					}
1111				}).start();
1112			}
1113		}
1114		if (stop || activeAccounts == 0) {
1115			Log.d(Config.LOGTAG, "good bye");
1116			stopSelf();
1117		}
1118	}
1119
1120	public void scheduleWakeUpCall(int seconds, int requestCode) {
1121		final long timeToWake = SystemClock.elapsedRealtime() + (seconds < 0 ? 1 : seconds + 1) * 1000;
1122		final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
1123		Intent intent = new Intent(this, EventReceiver.class);
1124		intent.setAction("ping");
1125		PendingIntent pendingIntent = PendingIntent.getBroadcast(this, requestCode, intent, 0);
1126		try {
1127			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake, pendingIntent);
1128		} catch (RuntimeException e) {
1129			Log.e(Config.LOGTAG, "unable to schedule alarm for ping", e);
1130		}
1131	}
1132
1133	@TargetApi(Build.VERSION_CODES.M)
1134	private void scheduleNextIdlePing() {
1135		final long timeToWake = SystemClock.elapsedRealtime() + (Config.IDLE_PING_INTERVAL * 1000);
1136		final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
1137		Intent intent = new Intent(this, EventReceiver.class);
1138		intent.setAction(ACTION_IDLE_PING);
1139		PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
1140		try {
1141			alarmManager.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake, pendingIntent);
1142		} catch (RuntimeException e) {
1143			Log.d(Config.LOGTAG, "unable to schedule alarm for idle ping", e);
1144		}
1145	}
1146
1147	public XmppConnection createConnection(final Account account) {
1148		final SharedPreferences sharedPref = getPreferences();
1149		String resource;
1150		try {
1151			resource = sharedPref.getString("resource", getString(R.string.default_resource)).toLowerCase(Locale.ENGLISH);
1152			if (resource.trim().isEmpty()) {
1153				throw new Exception();
1154			}
1155		} catch (Exception e) {
1156			resource = "conversations";
1157		}
1158		account.setResource(resource);
1159		final XmppConnection connection = new XmppConnection(account, this);
1160		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
1161		connection.setOnStatusChangedListener(this.statusListener);
1162		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
1163		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
1164		connection.setOnJinglePacketReceivedListener(this.jingleListener);
1165		connection.setOnBindListener(this.mOnBindListener);
1166		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
1167		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
1168		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mAvatarService);
1169		AxolotlService axolotlService = account.getAxolotlService();
1170		if (axolotlService != null) {
1171			connection.addOnAdvancedStreamFeaturesAvailableListener(axolotlService);
1172		}
1173		return connection;
1174	}
1175
1176	public void sendChatState(Conversation conversation) {
1177		if (sendChatStates()) {
1178			MessagePacket packet = mMessageGenerator.generateChatState(conversation);
1179			sendMessagePacket(conversation.getAccount(), packet);
1180		}
1181	}
1182
1183	private void sendFileMessage(final Message message, final boolean delay) {
1184		Log.d(Config.LOGTAG, "send file message");
1185		final Account account = message.getConversation().getAccount();
1186		if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1187				|| message.getConversation().getMode() == Conversation.MODE_MULTI) {
1188			mHttpConnectionManager.createNewUploadConnection(message, delay);
1189		} else {
1190			mJingleConnectionManager.createNewConnection(message);
1191		}
1192	}
1193
1194	public void sendMessage(final Message message) {
1195		sendMessage(message, false, false);
1196	}
1197
1198	private void sendMessage(final Message message, final boolean resend, final boolean delay) {
1199		final Account account = message.getConversation().getAccount();
1200		if (account.setShowErrorNotification(true)) {
1201			databaseBackend.updateAccount(account);
1202			mNotificationService.updateErrorNotification();
1203		}
1204		final Conversation conversation = message.getConversation();
1205		account.deactivateGracePeriod();
1206		MessagePacket packet = null;
1207		final boolean addToConversation = (conversation.getMode() != Conversation.MODE_MULTI
1208				|| !Patches.BAD_MUC_REFLECTION.contains(account.getServerIdentity()))
1209				&& !message.edited();
1210		boolean saveInDb = addToConversation;
1211		message.setStatus(Message.STATUS_WAITING);
1212
1213		if (!resend && message.getEncryption() != Message.ENCRYPTION_OTR) {
1214			message.getConversation().endOtrIfNeeded();
1215			message.getConversation().findUnsentMessagesWithEncryption(Message.ENCRYPTION_OTR,
1216					new Conversation.OnMessageFound() {
1217						@Override
1218						public void onMessageFound(Message message) {
1219							markMessage(message, Message.STATUS_SEND_FAILED);
1220						}
1221					});
1222		}
1223
1224		if (account.isOnlineAndConnected()) {
1225			switch (message.getEncryption()) {
1226				case Message.ENCRYPTION_NONE:
1227					if (message.needsUploading()) {
1228						if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1229								|| conversation.getMode() == Conversation.MODE_MULTI
1230								|| message.fixCounterpart()) {
1231							this.sendFileMessage(message, delay);
1232						} else {
1233							break;
1234						}
1235					} else {
1236						packet = mMessageGenerator.generateChat(message);
1237					}
1238					break;
1239				case Message.ENCRYPTION_PGP:
1240				case Message.ENCRYPTION_DECRYPTED:
1241					if (message.needsUploading()) {
1242						if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1243								|| conversation.getMode() == Conversation.MODE_MULTI
1244								|| message.fixCounterpart()) {
1245							this.sendFileMessage(message, delay);
1246						} else {
1247							break;
1248						}
1249					} else {
1250						packet = mMessageGenerator.generatePgpChat(message);
1251					}
1252					break;
1253				case Message.ENCRYPTION_OTR:
1254					SessionImpl otrSession = conversation.getOtrSession();
1255					if (otrSession != null && otrSession.getSessionStatus() == SessionStatus.ENCRYPTED) {
1256						try {
1257							message.setCounterpart(Jid.fromSessionID(otrSession.getSessionID()));
1258						} catch (InvalidJidException e) {
1259							break;
1260						}
1261						if (message.needsUploading()) {
1262							mJingleConnectionManager.createNewConnection(message);
1263						} else {
1264							packet = mMessageGenerator.generateOtrChat(message);
1265						}
1266					} else if (otrSession == null) {
1267						if (message.fixCounterpart()) {
1268							conversation.startOtrSession(message.getCounterpart().getResourcepart(), true);
1269						} else {
1270							Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not fix counterpart for OTR message to contact " + message.getCounterpart());
1271							break;
1272						}
1273					} else {
1274						Log.d(Config.LOGTAG, account.getJid().toBareJid() + " OTR session with " + message.getContact() + " is in wrong state: " + otrSession.getSessionStatus().toString());
1275					}
1276					break;
1277				case Message.ENCRYPTION_AXOLOTL:
1278					message.setFingerprint(account.getAxolotlService().getOwnFingerprint());
1279					if (message.needsUploading()) {
1280						if (account.httpUploadAvailable(fileBackend.getFile(message, false).getSize())
1281								|| conversation.getMode() == Conversation.MODE_MULTI
1282								|| message.fixCounterpart()) {
1283							this.sendFileMessage(message, delay);
1284						} else {
1285							break;
1286						}
1287					} else {
1288						XmppAxolotlMessage axolotlMessage = account.getAxolotlService().fetchAxolotlMessageFromCache(message);
1289						if (axolotlMessage == null) {
1290							account.getAxolotlService().preparePayloadMessage(message, delay);
1291						} else {
1292							packet = mMessageGenerator.generateAxolotlChat(message, axolotlMessage);
1293						}
1294					}
1295					break;
1296
1297			}
1298			if (packet != null) {
1299				if (account.getXmppConnection().getFeatures().sm()
1300						|| (conversation.getMode() == Conversation.MODE_MULTI && message.getCounterpart().isBareJid())) {
1301					message.setStatus(Message.STATUS_UNSEND);
1302				} else {
1303					message.setStatus(Message.STATUS_SEND);
1304				}
1305			}
1306		} else {
1307			switch (message.getEncryption()) {
1308				case Message.ENCRYPTION_DECRYPTED:
1309					if (!message.needsUploading()) {
1310						String pgpBody = message.getEncryptedBody();
1311						String decryptedBody = message.getBody();
1312						message.setBody(pgpBody); //TODO might throw NPE
1313						message.setEncryption(Message.ENCRYPTION_PGP);
1314						if (message.edited()) {
1315							message.setBody(decryptedBody);
1316							message.setEncryption(Message.ENCRYPTION_DECRYPTED);
1317							databaseBackend.updateMessage(message, message.getEditedId());
1318							updateConversationUi();
1319							return;
1320						} else {
1321							databaseBackend.createMessage(message);
1322							saveInDb = false;
1323							message.setBody(decryptedBody);
1324							message.setEncryption(Message.ENCRYPTION_DECRYPTED);
1325						}
1326					}
1327					break;
1328				case Message.ENCRYPTION_OTR:
1329					if (!conversation.hasValidOtrSession() && message.getCounterpart() != null) {
1330						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": create otr session without starting for " + message.getContact().getJid());
1331						conversation.startOtrSession(message.getCounterpart().getResourcepart(), false);
1332					}
1333					break;
1334				case Message.ENCRYPTION_AXOLOTL:
1335					message.setFingerprint(account.getAxolotlService().getOwnFingerprint());
1336					break;
1337			}
1338		}
1339
1340
1341		boolean mucMessage = conversation.getMode() == Conversation.MODE_MULTI && message.getType() != Message.TYPE_PRIVATE;
1342		if (mucMessage) {
1343			message.setCounterpart(conversation.getMucOptions().getSelf().getFullJid());
1344		}
1345
1346		if (resend) {
1347			if (packet != null && addToConversation) {
1348				if (account.getXmppConnection().getFeatures().sm() || mucMessage) {
1349					markMessage(message, Message.STATUS_UNSEND);
1350				} else {
1351					markMessage(message, Message.STATUS_SEND);
1352				}
1353			}
1354		} else {
1355			if (addToConversation) {
1356				conversation.add(message);
1357			}
1358			if (saveInDb) {
1359				databaseBackend.createMessage(message);
1360			} else if (message.edited()) {
1361				databaseBackend.updateMessage(message, message.getEditedId());
1362			}
1363			updateConversationUi();
1364		}
1365		if (packet != null) {
1366			if (delay) {
1367				mMessageGenerator.addDelay(packet, message.getTimeSent());
1368			}
1369			if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1370				if (this.sendChatStates()) {
1371					packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
1372				}
1373			}
1374			sendMessagePacket(account, packet);
1375		}
1376	}
1377
1378	private void sendUnsentMessages(final Conversation conversation) {
1379		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
1380
1381			@Override
1382			public void onMessageFound(Message message) {
1383				resendMessage(message, true);
1384			}
1385		});
1386	}
1387
1388	public void resendMessage(final Message message, final boolean delay) {
1389		sendMessage(message, true, delay);
1390	}
1391
1392	public void fetchRosterFromServer(final Account account) {
1393		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
1394		if (!"".equals(account.getRosterVersion())) {
1395			Log.d(Config.LOGTAG, account.getJid().toBareJid()
1396					+ ": fetching roster version " + account.getRosterVersion());
1397		} else {
1398			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
1399		}
1400		iqPacket.query(Namespace.ROSTER).setAttribute("ver", account.getRosterVersion());
1401		sendIqPacket(account, iqPacket, mIqParser);
1402	}
1403
1404	public void fetchBookmarks(final Account account) {
1405		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
1406		final Element query = iqPacket.query("jabber:iq:private");
1407		query.addChild("storage", "storage:bookmarks");
1408		final OnIqPacketReceived callback = new OnIqPacketReceived() {
1409
1410			@Override
1411			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1412				if (packet.getType() == IqPacket.TYPE.RESULT) {
1413					final Element query = packet.query();
1414					final HashMap<Jid, Bookmark> bookmarks = new HashMap<>();
1415					final Element storage = query.findChild("storage", "storage:bookmarks");
1416					final boolean autojoin = respectAutojoin();
1417					if (storage != null) {
1418						for (final Element item : storage.getChildren()) {
1419							if (item.getName().equals("conference")) {
1420								final Bookmark bookmark = Bookmark.parse(item, account);
1421								Bookmark old = bookmarks.put(bookmark.getJid(), bookmark);
1422								if (old != null && old.getBookmarkName() != null && bookmark.getBookmarkName() == null) {
1423									bookmark.setBookmarkName(old.getBookmarkName());
1424								}
1425								Conversation conversation = find(bookmark);
1426								if (conversation != null) {
1427									bookmark.setConversation(conversation);
1428								} else if (bookmark.autojoin() && bookmark.getJid() != null && autojoin) {
1429									conversation = findOrCreateConversation(account, bookmark.getJid(), true, true, false);
1430									bookmark.setConversation(conversation);
1431								}
1432							}
1433						}
1434					}
1435					account.setBookmarks(new CopyOnWriteArrayList<>(bookmarks.values()));
1436				} else {
1437					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not fetch bookmarks");
1438				}
1439			}
1440		};
1441		sendIqPacket(account, iqPacket, callback);
1442	}
1443
1444	public void pushBookmarks(Account account) {
1445		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": pushing bookmarks");
1446		IqPacket iqPacket = new IqPacket(IqPacket.TYPE.SET);
1447		Element query = iqPacket.query("jabber:iq:private");
1448		Element storage = query.addChild("storage", "storage:bookmarks");
1449		for (Bookmark bookmark : account.getBookmarks()) {
1450			storage.addChild(bookmark);
1451		}
1452		sendIqPacket(account, iqPacket, mDefaultIqHandler);
1453	}
1454
1455	private void restoreFromDatabase() {
1456		synchronized (this.conversations) {
1457			final Map<String, Account> accountLookupTable = new Hashtable<>();
1458			for (Account account : this.accounts) {
1459				accountLookupTable.put(account.getUuid(), account);
1460			}
1461			Log.d(Config.LOGTAG, "restoring conversations...");
1462			final long startTimeConversationsRestore = SystemClock.elapsedRealtime();
1463			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
1464			for (Iterator<Conversation> iterator = conversations.listIterator(); iterator.hasNext(); ) {
1465				Conversation conversation = iterator.next();
1466				Account account = accountLookupTable.get(conversation.getAccountUuid());
1467				if (account != null) {
1468					conversation.setAccount(account);
1469				} else {
1470					Log.e(Config.LOGTAG, "unable to restore Conversations with " + conversation.getJid());
1471					iterator.remove();
1472				}
1473			}
1474			long diffConversationsRestore = SystemClock.elapsedRealtime() - startTimeConversationsRestore;
1475			Log.d(Config.LOGTAG, "finished restoring conversations in " + diffConversationsRestore + "ms");
1476			Runnable runnable = new Runnable() {
1477				@Override
1478				public void run() {
1479					long deletionDate = getAutomaticMessageDeletionDate();
1480					mLastExpiryRun.set(SystemClock.elapsedRealtime());
1481					if (deletionDate > 0) {
1482						Log.d(Config.LOGTAG, "deleting messages that are older than " + AbstractGenerator.getTimestamp(deletionDate));
1483						databaseBackend.expireOldMessages(deletionDate);
1484					}
1485					Log.d(Config.LOGTAG, "restoring roster...");
1486					for (Account account : accounts) {
1487						databaseBackend.readRoster(account.getRoster());
1488						account.initAccountServices(XmppConnectionService.this); //roster needs to be loaded at this stage
1489					}
1490					getBitmapCache().evictAll();
1491					loadPhoneContacts();
1492					Log.d(Config.LOGTAG, "restoring messages...");
1493					final long startMessageRestore = SystemClock.elapsedRealtime();
1494					for (Conversation conversation : conversations) {
1495						conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1496						checkDeletedFiles(conversation);
1497						conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1498
1499							@Override
1500							public void onMessageFound(Message message) {
1501								markMessage(message, Message.STATUS_WAITING);
1502							}
1503						});
1504						conversation.findUnreadMessages(new Conversation.OnMessageFound() {
1505							@Override
1506							public void onMessageFound(Message message) {
1507								mNotificationService.pushFromBacklog(message);
1508							}
1509						});
1510					}
1511					mNotificationService.finishBacklog(false);
1512					restoredFromDatabaseLatch.countDown();
1513					final long diffMessageRestore = SystemClock.elapsedRealtime() - startMessageRestore;
1514					Log.d(Config.LOGTAG, "finished restoring messages in " + diffMessageRestore + "ms");
1515					updateConversationUi();
1516				}
1517			};
1518			mDatabaseReaderExecutor.execute(runnable); //will contain one write command (expiry) but that's fine
1519		}
1520	}
1521
1522	public void loadPhoneContacts() {
1523		mContactMergerExecutor.execute(new Runnable() {
1524			@Override
1525			public void run() {
1526				PhoneHelper.loadPhoneContacts(XmppConnectionService.this, new OnPhoneContactsLoadedListener() {
1527					@Override
1528					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
1529						Log.d(Config.LOGTAG, "start merging phone contacts with roster");
1530						for (Account account : accounts) {
1531							List<Contact> withSystemAccounts = account.getRoster().getWithSystemAccounts();
1532							for (Bundle phoneContact : phoneContacts) {
1533								Jid jid;
1534								try {
1535									jid = Jid.fromString(phoneContact.getString("jid"));
1536								} catch (final InvalidJidException e) {
1537									continue;
1538								}
1539								final Contact contact = account.getRoster().getContact(jid);
1540								String systemAccount = phoneContact.getInt("phoneid")
1541										+ "#"
1542										+ phoneContact.getString("lookup");
1543								contact.setSystemAccount(systemAccount);
1544								boolean needsCacheClean = contact.setPhotoUri(phoneContact.getString("photouri"));
1545								needsCacheClean |= contact.setSystemName(phoneContact.getString("displayname"));
1546								if (needsCacheClean) {
1547									getAvatarService().clear(contact);
1548								}
1549								withSystemAccounts.remove(contact);
1550							}
1551							for (Contact contact : withSystemAccounts) {
1552								contact.setSystemAccount(null);
1553								boolean needsCacheClean = contact.setPhotoUri(null);
1554								needsCacheClean |= contact.setSystemName(null);
1555								if (needsCacheClean) {
1556									getAvatarService().clear(contact);
1557								}
1558							}
1559						}
1560						Log.d(Config.LOGTAG, "finished merging phone contacts");
1561						mShortcutService.refresh(mInitialAddressbookSyncCompleted.compareAndSet(false, true));
1562						updateAccountUi();
1563					}
1564				});
1565			}
1566		});
1567	}
1568
1569	public List<Conversation> getConversations() {
1570		return this.conversations;
1571	}
1572
1573	private void checkDeletedFiles(Conversation conversation) {
1574		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
1575
1576			@Override
1577			public void onMessageFound(Message message) {
1578				if (!getFileBackend().isFileAvailable(message)) {
1579					message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1580					final int s = message.getStatus();
1581					if (s == Message.STATUS_WAITING || s == Message.STATUS_OFFERED || s == Message.STATUS_UNSEND) {
1582						markMessage(message, Message.STATUS_SEND_FAILED);
1583					}
1584				}
1585			}
1586		});
1587	}
1588
1589	private void markFileDeleted(final String path) {
1590		Log.d(Config.LOGTAG, "deleted file " + path);
1591		for (Conversation conversation : getConversations()) {
1592			conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
1593				@Override
1594				public void onMessageFound(Message message) {
1595					DownloadableFile file = fileBackend.getFile(message);
1596					if (file.getAbsolutePath().equals(path)) {
1597						if (!file.exists()) {
1598							message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1599							final int s = message.getStatus();
1600							if (s == Message.STATUS_WAITING || s == Message.STATUS_OFFERED || s == Message.STATUS_UNSEND) {
1601								markMessage(message, Message.STATUS_SEND_FAILED);
1602							} else {
1603								updateConversationUi();
1604							}
1605						} else {
1606							Log.d(Config.LOGTAG, "found matching message for file " + path + " but file still exists");
1607						}
1608					}
1609				}
1610			});
1611		}
1612	}
1613
1614	public void populateWithOrderedConversations(final List<Conversation> list) {
1615		populateWithOrderedConversations(list, true);
1616	}
1617
1618	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeNoFileUpload) {
1619		list.clear();
1620		if (includeNoFileUpload) {
1621			list.addAll(getConversations());
1622		} else {
1623			for (Conversation conversation : getConversations()) {
1624				if (conversation.getMode() == Conversation.MODE_SINGLE
1625						|| conversation.getAccount().httpUploadAvailable()) {
1626					list.add(conversation);
1627				}
1628			}
1629		}
1630		try {
1631			Collections.sort(list);
1632		} catch (IllegalArgumentException e) {
1633			//ignore
1634		}
1635	}
1636
1637	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
1638		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation, callback)) {
1639			return;
1640		} else if (timestamp == 0) {
1641			return;
1642		}
1643		Log.d(Config.LOGTAG, "load more messages for " + conversation.getName() + " prior to " + MessageGenerator.getTimestamp(timestamp));
1644		final Runnable runnable = () -> {
1645			final Account account = conversation.getAccount();
1646			List<Message> messages = databaseBackend.getMessages(conversation, 50, timestamp);
1647			if (messages.size() > 0) {
1648				conversation.addAll(0, messages);
1649				checkDeletedFiles(conversation);
1650				callback.onMoreMessagesLoaded(messages.size(), conversation);
1651			} else if (conversation.hasMessagesLeftOnServer()
1652					&& account.isOnlineAndConnected()
1653					&& conversation.getLastClearHistory().getTimestamp() == 0) {
1654				final boolean mamAvailable;
1655				if (conversation.getMode() == Conversation.MODE_SINGLE) {
1656					mamAvailable = account.getXmppConnection().getFeatures().mam() && !conversation.getContact().isBlocked();
1657				} else {
1658					mamAvailable = conversation.getMucOptions().mamSupport();
1659				}
1660				if (mamAvailable) {
1661					MessageArchiveService.Query query = getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
1662					if (query != null) {
1663						query.setCallback(callback);
1664						callback.informUser(R.string.fetching_history_from_server);
1665					} else {
1666						callback.informUser(R.string.not_fetching_history_retention_period);
1667					}
1668
1669				}
1670			}
1671		};
1672		mDatabaseReaderExecutor.execute(runnable);
1673	}
1674
1675	public List<Account> getAccounts() {
1676		return this.accounts;
1677	}
1678
1679	public List<Conversation> findAllConferencesWith(Contact contact) {
1680		ArrayList<Conversation> results = new ArrayList<>();
1681		for (Conversation conversation : conversations) {
1682			if (conversation.getMode() == Conversation.MODE_MULTI
1683					&& conversation.getMucOptions().isContactInRoom(contact)) {
1684				results.add(conversation);
1685			}
1686		}
1687		return results;
1688	}
1689
1690	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
1691		for (final Conversation conversation : haystack) {
1692			if (conversation.getContact() == contact) {
1693				return conversation;
1694			}
1695		}
1696		return null;
1697	}
1698
1699	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1700		if (jid == null) {
1701			return null;
1702		}
1703		for (final Conversation conversation : haystack) {
1704			if ((account == null || conversation.getAccount() == account)
1705					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1706				return conversation;
1707			}
1708		}
1709		return null;
1710	}
1711
1712	public Conversation findOrCreateConversation(Account account, Jid jid, boolean muc, final boolean async) {
1713		return this.findOrCreateConversation(account, jid, muc, false, async);
1714	}
1715
1716	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final boolean joinAfterCreate, final boolean async) {
1717		return this.findOrCreateConversation(account, jid, muc, joinAfterCreate, null, async);
1718	}
1719
1720	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final boolean joinAfterCreate, final MessageArchiveService.Query query, final boolean async) {
1721		synchronized (this.conversations) {
1722			Conversation conversation = find(account, jid);
1723			if (conversation != null) {
1724				return conversation;
1725			}
1726			conversation = databaseBackend.findConversation(account, jid);
1727			final boolean loadMessagesFromDb;
1728			if (conversation != null) {
1729				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1730				conversation.setAccount(account);
1731				if (muc) {
1732					conversation.setMode(Conversation.MODE_MULTI);
1733					conversation.setContactJid(jid);
1734				} else {
1735					conversation.setMode(Conversation.MODE_SINGLE);
1736					conversation.setContactJid(jid.toBareJid());
1737				}
1738				databaseBackend.updateConversation(conversation);
1739				loadMessagesFromDb = conversation.messagesLoaded.compareAndSet(true, false);
1740			} else {
1741				String conversationName;
1742				Contact contact = account.getRoster().getContact(jid);
1743				if (contact != null) {
1744					conversationName = contact.getDisplayName();
1745				} else {
1746					conversationName = jid.getLocalpart();
1747				}
1748				if (muc) {
1749					conversation = new Conversation(conversationName, account, jid,
1750							Conversation.MODE_MULTI);
1751				} else {
1752					conversation = new Conversation(conversationName, account, jid.toBareJid(),
1753							Conversation.MODE_SINGLE);
1754				}
1755				this.databaseBackend.createConversation(conversation);
1756				loadMessagesFromDb = false;
1757			}
1758			final Conversation c = conversation;
1759			final Runnable runnable = () -> {
1760				if (loadMessagesFromDb) {
1761					c.addAll(0, databaseBackend.getMessages(c, Config.PAGE_SIZE));
1762					updateConversationUi();
1763					c.messagesLoaded.set(true);
1764				}
1765				if (account.getXmppConnection() != null
1766						&& !c.getContact().isBlocked()
1767						&& account.getXmppConnection().getFeatures().mam()
1768						&& !muc) {
1769					if (query == null) {
1770						mMessageArchiveService.query(c);
1771					} else {
1772						if (query.getConversation() == null) {
1773							mMessageArchiveService.query(c, query.getStart(), query.isCatchup());
1774						}
1775					}
1776				}
1777				checkDeletedFiles(c);
1778				if (joinAfterCreate) {
1779					joinMuc(c);
1780				}
1781			};
1782			if (async) {
1783				mDatabaseReaderExecutor.execute(runnable);
1784			} else {
1785				runnable.run();
1786			}
1787			this.conversations.add(conversation);
1788			updateConversationUi();
1789			return conversation;
1790		}
1791	}
1792
1793	public void archiveConversation(Conversation conversation) {
1794		getNotificationService().clear(conversation);
1795		conversation.setStatus(Conversation.STATUS_ARCHIVED);
1796		synchronized (this.conversations) {
1797			if (conversation.getMode() == Conversation.MODE_MULTI) {
1798				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1799					Bookmark bookmark = conversation.getBookmark();
1800					if (bookmark != null && bookmark.autojoin() && respectAutojoin()) {
1801						bookmark.setAutojoin(false);
1802						pushBookmarks(bookmark.getAccount());
1803					}
1804				}
1805				leaveMuc(conversation);
1806			} else {
1807				conversation.endOtrIfNeeded();
1808				if (conversation.getContact().getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1809					Log.d(Config.LOGTAG, "Canceling presence request from " + conversation.getJid().toString());
1810					sendPresencePacket(
1811							conversation.getAccount(),
1812							mPresenceGenerator.stopPresenceUpdatesTo(conversation.getContact())
1813					);
1814				}
1815			}
1816			updateConversation(conversation);
1817			this.conversations.remove(conversation);
1818			updateConversationUi();
1819		}
1820	}
1821
1822	public void createAccount(final Account account) {
1823		account.initAccountServices(this);
1824		databaseBackend.createAccount(account);
1825		this.accounts.add(account);
1826		this.reconnectAccountInBackground(account);
1827		updateAccountUi();
1828		syncEnabledAccountSetting();
1829		toggleForegroundService();
1830	}
1831
1832	private void syncEnabledAccountSetting() {
1833		getPreferences().edit().putBoolean(EventReceiver.SETTING_ENABLED_ACCOUNTS, hasEnabledAccounts()).apply();
1834	}
1835
1836	public void createAccountFromKey(final String alias, final OnAccountCreated callback) {
1837		new Thread(() -> {
1838			try {
1839				final X509Certificate[] chain = KeyChain.getCertificateChain(this, alias);
1840				final X509Certificate cert = chain != null && chain.length > 0 ? chain[0] : null;
1841				if (cert == null) {
1842					callback.informUser(R.string.unable_to_parse_certificate);
1843					return;
1844				}
1845				Pair<Jid, String> info = CryptoHelper.extractJidAndName(cert);
1846				if (info == null) {
1847					callback.informUser(R.string.certificate_does_not_contain_jid);
1848					return;
1849				}
1850				if (findAccountByJid(info.first) == null) {
1851					Account account = new Account(info.first, "");
1852					account.setPrivateKeyAlias(alias);
1853					account.setOption(Account.OPTION_DISABLED, true);
1854					account.setDisplayName(info.second);
1855					createAccount(account);
1856					callback.onAccountCreated(account);
1857					if (Config.X509_VERIFICATION) {
1858						try {
1859							getMemorizingTrustManager().getNonInteractive(account.getJid().getDomainpart()).checkClientTrusted(chain, "RSA");
1860						} catch (CertificateException e) {
1861							callback.informUser(R.string.certificate_chain_is_not_trusted);
1862						}
1863					}
1864				} else {
1865					callback.informUser(R.string.account_already_exists);
1866				}
1867			} catch (Exception e) {
1868				e.printStackTrace();
1869				callback.informUser(R.string.unable_to_parse_certificate);
1870			}
1871		}).start();
1872
1873	}
1874
1875	public void updateKeyInAccount(final Account account, final String alias) {
1876		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": update key in account " + alias);
1877		try {
1878			X509Certificate[] chain = KeyChain.getCertificateChain(XmppConnectionService.this, alias);
1879			Log.d(Config.LOGTAG, account.getJid().toBareJid() + " loaded certificate chain");
1880			Pair<Jid, String> info = CryptoHelper.extractJidAndName(chain[0]);
1881			if (info == null) {
1882				showErrorToastInUi(R.string.certificate_does_not_contain_jid);
1883				return;
1884			}
1885			if (account.getJid().toBareJid().equals(info.first)) {
1886				account.setPrivateKeyAlias(alias);
1887				account.setDisplayName(info.second);
1888				databaseBackend.updateAccount(account);
1889				if (Config.X509_VERIFICATION) {
1890					try {
1891						getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
1892					} catch (CertificateException e) {
1893						showErrorToastInUi(R.string.certificate_chain_is_not_trusted);
1894					}
1895					account.getAxolotlService().regenerateKeys(true);
1896				}
1897			} else {
1898				showErrorToastInUi(R.string.jid_does_not_match_certificate);
1899			}
1900		} catch (Exception e) {
1901			e.printStackTrace();
1902		}
1903	}
1904
1905	public boolean updateAccount(final Account account) {
1906		if (databaseBackend.updateAccount(account)) {
1907			account.setShowErrorNotification(true);
1908			this.statusListener.onStatusChanged(account);
1909			databaseBackend.updateAccount(account);
1910			reconnectAccountInBackground(account);
1911			updateAccountUi();
1912			getNotificationService().updateErrorNotification();
1913			toggleForegroundService();
1914			syncEnabledAccountSetting();
1915			return true;
1916		} else {
1917			return false;
1918		}
1919	}
1920
1921	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
1922		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
1923		sendIqPacket(account, iq, new OnIqPacketReceived() {
1924			@Override
1925			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1926				if (packet.getType() == IqPacket.TYPE.RESULT) {
1927					account.setPassword(newPassword);
1928					account.setOption(Account.OPTION_MAGIC_CREATE, false);
1929					databaseBackend.updateAccount(account);
1930					callback.onPasswordChangeSucceeded();
1931				} else {
1932					callback.onPasswordChangeFailed();
1933				}
1934			}
1935		});
1936	}
1937
1938	public void deleteAccount(final Account account) {
1939		synchronized (this.conversations) {
1940			for (final Conversation conversation : conversations) {
1941				if (conversation.getAccount() == account) {
1942					if (conversation.getMode() == Conversation.MODE_MULTI) {
1943						leaveMuc(conversation);
1944					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1945						conversation.endOtrIfNeeded();
1946					}
1947					conversations.remove(conversation);
1948				}
1949			}
1950			if (account.getXmppConnection() != null) {
1951				new Thread(() -> disconnect(account, true)).start();
1952			}
1953			final Runnable runnable = () -> {
1954				if (!databaseBackend.deleteAccount(account)) {
1955					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": unable to delete account");
1956				}
1957			};
1958			mDatabaseWriterExecutor.execute(runnable);
1959			this.accounts.remove(account);
1960			updateAccountUi();
1961			getNotificationService().updateErrorNotification();
1962			syncEnabledAccountSetting();
1963		}
1964	}
1965
1966	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1967		synchronized (this) {
1968			this.mLastActivity = System.currentTimeMillis();
1969			if (checkListeners()) {
1970				switchToForeground();
1971			}
1972			this.mOnConversationUpdate = listener;
1973			this.mNotificationService.setIsInForeground(true);
1974			if (this.convChangedListenerCount < 2) {
1975				this.convChangedListenerCount++;
1976			}
1977		}
1978	}
1979
1980	public void removeOnConversationListChangedListener() {
1981		synchronized (this) {
1982			this.convChangedListenerCount--;
1983			if (this.convChangedListenerCount <= 0) {
1984				this.convChangedListenerCount = 0;
1985				this.mOnConversationUpdate = null;
1986				this.mNotificationService.setIsInForeground(false);
1987				if (checkListeners()) {
1988					switchToBackground();
1989				}
1990			}
1991		}
1992	}
1993
1994	public void setOnShowErrorToastListener(OnShowErrorToast onShowErrorToast) {
1995		synchronized (this) {
1996			if (checkListeners()) {
1997				switchToForeground();
1998			}
1999			this.mOnShowErrorToast = onShowErrorToast;
2000			if (this.showErrorToastListenerCount < 2) {
2001				this.showErrorToastListenerCount++;
2002			}
2003		}
2004		this.mOnShowErrorToast = onShowErrorToast;
2005	}
2006
2007	public void removeOnShowErrorToastListener() {
2008		synchronized (this) {
2009			this.showErrorToastListenerCount--;
2010			if (this.showErrorToastListenerCount <= 0) {
2011				this.showErrorToastListenerCount = 0;
2012				this.mOnShowErrorToast = null;
2013				if (checkListeners()) {
2014					switchToBackground();
2015				}
2016			}
2017		}
2018	}
2019
2020	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
2021		synchronized (this) {
2022			if (checkListeners()) {
2023				switchToForeground();
2024			}
2025			this.mOnAccountUpdate = listener;
2026			if (this.accountChangedListenerCount < 2) {
2027				this.accountChangedListenerCount++;
2028			}
2029		}
2030	}
2031
2032	public void removeOnAccountListChangedListener() {
2033		synchronized (this) {
2034			this.accountChangedListenerCount--;
2035			if (this.accountChangedListenerCount <= 0) {
2036				this.mOnAccountUpdate = null;
2037				this.accountChangedListenerCount = 0;
2038				if (checkListeners()) {
2039					switchToBackground();
2040				}
2041			}
2042		}
2043	}
2044
2045	public void setOnCaptchaRequestedListener(OnCaptchaRequested listener) {
2046		synchronized (this) {
2047			if (checkListeners()) {
2048				switchToForeground();
2049			}
2050			this.mOnCaptchaRequested = listener;
2051			if (this.captchaRequestedListenerCount < 2) {
2052				this.captchaRequestedListenerCount++;
2053			}
2054		}
2055	}
2056
2057	public void removeOnCaptchaRequestedListener() {
2058		synchronized (this) {
2059			this.captchaRequestedListenerCount--;
2060			if (this.captchaRequestedListenerCount <= 0) {
2061				this.mOnCaptchaRequested = null;
2062				this.captchaRequestedListenerCount = 0;
2063				if (checkListeners()) {
2064					switchToBackground();
2065				}
2066			}
2067		}
2068	}
2069
2070	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
2071		synchronized (this) {
2072			if (checkListeners()) {
2073				switchToForeground();
2074			}
2075			this.mOnRosterUpdate = listener;
2076			if (this.rosterChangedListenerCount < 2) {
2077				this.rosterChangedListenerCount++;
2078			}
2079		}
2080	}
2081
2082	public void removeOnRosterUpdateListener() {
2083		synchronized (this) {
2084			this.rosterChangedListenerCount--;
2085			if (this.rosterChangedListenerCount <= 0) {
2086				this.rosterChangedListenerCount = 0;
2087				this.mOnRosterUpdate = null;
2088				if (checkListeners()) {
2089					switchToBackground();
2090				}
2091			}
2092		}
2093	}
2094
2095	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
2096		synchronized (this) {
2097			if (checkListeners()) {
2098				switchToForeground();
2099			}
2100			this.mOnUpdateBlocklist = listener;
2101			if (this.updateBlocklistListenerCount < 2) {
2102				this.updateBlocklistListenerCount++;
2103			}
2104		}
2105	}
2106
2107	public void removeOnUpdateBlocklistListener() {
2108		synchronized (this) {
2109			this.updateBlocklistListenerCount--;
2110			if (this.updateBlocklistListenerCount <= 0) {
2111				this.updateBlocklistListenerCount = 0;
2112				this.mOnUpdateBlocklist = null;
2113				if (checkListeners()) {
2114					switchToBackground();
2115				}
2116			}
2117		}
2118	}
2119
2120	public void setOnKeyStatusUpdatedListener(final OnKeyStatusUpdated listener) {
2121		synchronized (this) {
2122			if (checkListeners()) {
2123				switchToForeground();
2124			}
2125			this.mOnKeyStatusUpdated = listener;
2126			if (this.keyStatusUpdatedListenerCount < 2) {
2127				this.keyStatusUpdatedListenerCount++;
2128			}
2129		}
2130	}
2131
2132	public void removeOnNewKeysAvailableListener() {
2133		synchronized (this) {
2134			this.keyStatusUpdatedListenerCount--;
2135			if (this.keyStatusUpdatedListenerCount <= 0) {
2136				this.keyStatusUpdatedListenerCount = 0;
2137				this.mOnKeyStatusUpdated = null;
2138				if (checkListeners()) {
2139					switchToBackground();
2140				}
2141			}
2142		}
2143	}
2144
2145	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
2146		synchronized (this) {
2147			if (checkListeners()) {
2148				switchToForeground();
2149			}
2150			this.mOnMucRosterUpdate = listener;
2151			if (this.mucRosterChangedListenerCount < 2) {
2152				this.mucRosterChangedListenerCount++;
2153			}
2154		}
2155	}
2156
2157	public void removeOnMucRosterUpdateListener() {
2158		synchronized (this) {
2159			this.mucRosterChangedListenerCount--;
2160			if (this.mucRosterChangedListenerCount <= 0) {
2161				this.mucRosterChangedListenerCount = 0;
2162				this.mOnMucRosterUpdate = null;
2163				if (checkListeners()) {
2164					switchToBackground();
2165				}
2166			}
2167		}
2168	}
2169
2170	public boolean checkListeners() {
2171		return (this.mOnAccountUpdate == null
2172				&& this.mOnConversationUpdate == null
2173				&& this.mOnRosterUpdate == null
2174				&& this.mOnCaptchaRequested == null
2175				&& this.mOnUpdateBlocklist == null
2176				&& this.mOnShowErrorToast == null
2177				&& this.mOnKeyStatusUpdated == null);
2178	}
2179
2180	private void switchToForeground() {
2181		final boolean broadcastLastActivity = broadcastLastActivity();
2182		for (Conversation conversation : getConversations()) {
2183			if (conversation.getMode() == Conversation.MODE_MULTI) {
2184				conversation.getMucOptions().resetChatState();
2185			} else {
2186				conversation.setIncomingChatState(Config.DEFAULT_CHATSTATE);
2187			}
2188		}
2189		for (Account account : getAccounts()) {
2190			if (account.getStatus() == Account.State.ONLINE) {
2191				account.deactivateGracePeriod();
2192				final XmppConnection connection = account.getXmppConnection();
2193				if (connection != null) {
2194					if (connection.getFeatures().csi()) {
2195						connection.sendActive();
2196					}
2197					if (broadcastLastActivity) {
2198						sendPresence(account, false); //send new presence but don't include idle because we are not
2199					}
2200				}
2201			}
2202		}
2203		Log.d(Config.LOGTAG, "app switched into foreground");
2204	}
2205
2206	private void switchToBackground() {
2207		final boolean broadcastLastActivity = broadcastLastActivity();
2208		for (Account account : getAccounts()) {
2209			if (account.getStatus() == Account.State.ONLINE) {
2210				XmppConnection connection = account.getXmppConnection();
2211				if (connection != null) {
2212					if (broadcastLastActivity) {
2213						sendPresence(account, true);
2214					}
2215					if (connection.getFeatures().csi()) {
2216						connection.sendInactive();
2217					}
2218				}
2219			}
2220		}
2221		this.mNotificationService.setIsInForeground(false);
2222		Log.d(Config.LOGTAG, "app switched into background");
2223	}
2224
2225	private void connectMultiModeConversations(Account account) {
2226		List<Conversation> conversations = getConversations();
2227		for (Conversation conversation : conversations) {
2228			if (conversation.getMode() == Conversation.MODE_MULTI && conversation.getAccount() == account) {
2229				joinMuc(conversation);
2230			}
2231		}
2232	}
2233
2234	public void joinMuc(Conversation conversation) {
2235		joinMuc(conversation, null, false);
2236	}
2237
2238	public void joinMuc(Conversation conversation, boolean followedInvite) {
2239		joinMuc(conversation, null, followedInvite);
2240	}
2241
2242	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined) {
2243		joinMuc(conversation, onConferenceJoined, false);
2244	}
2245
2246	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined, final boolean followedInvite) {
2247		Account account = conversation.getAccount();
2248		account.pendingConferenceJoins.remove(conversation);
2249		account.pendingConferenceLeaves.remove(conversation);
2250		if (account.getStatus() == Account.State.ONLINE) {
2251			sendPresencePacket(account, mPresenceGenerator.leave(conversation.getMucOptions()));
2252			conversation.resetMucOptions();
2253			if (onConferenceJoined != null) {
2254				conversation.getMucOptions().flagNoAutoPushConfiguration();
2255			}
2256			conversation.setHasMessagesLeftOnServer(false);
2257			fetchConferenceConfiguration(conversation, new OnConferenceConfigurationFetched() {
2258
2259				private void join(Conversation conversation) {
2260					Account account = conversation.getAccount();
2261					final MucOptions mucOptions = conversation.getMucOptions();
2262					final Jid joinJid = mucOptions.getSelf().getFullJid();
2263					Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
2264					PresencePacket packet = mPresenceGenerator.selfPresence(account, Presence.Status.ONLINE, mucOptions.nonanonymous() || onConferenceJoined != null);
2265					packet.setTo(joinJid);
2266					Element x = packet.addChild("x", "http://jabber.org/protocol/muc");
2267					if (conversation.getMucOptions().getPassword() != null) {
2268						x.addChild("password").setContent(mucOptions.getPassword());
2269					}
2270
2271					if (mucOptions.mamSupport()) {
2272						// Use MAM instead of the limited muc history to get history
2273						x.addChild("history").setAttribute("maxchars", "0");
2274					} else {
2275						// Fallback to muc history
2276						x.addChild("history").setAttribute("since", PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted().getTimestamp()));
2277					}
2278					sendPresencePacket(account, packet);
2279					if (onConferenceJoined != null) {
2280						onConferenceJoined.onConferenceJoined(conversation);
2281					}
2282					if (!joinJid.equals(conversation.getJid())) {
2283						conversation.setContactJid(joinJid);
2284						databaseBackend.updateConversation(conversation);
2285					}
2286
2287					if (mucOptions.mamSupport()) {
2288						getMessageArchiveService().catchupMUC(conversation);
2289					}
2290					if (mucOptions.isPrivateAndNonAnonymous()) {
2291						fetchConferenceMembers(conversation);
2292						if (followedInvite && conversation.getBookmark() == null) {
2293							saveConversationAsBookmark(conversation, null);
2294						}
2295					}
2296					sendUnsentMessages(conversation);
2297				}
2298
2299				@Override
2300				public void onConferenceConfigurationFetched(Conversation conversation) {
2301					join(conversation);
2302				}
2303
2304				@Override
2305				public void onFetchFailed(final Conversation conversation, Element error) {
2306					if (error != null && "remote-server-not-found".equals(error.getName())) {
2307						conversation.getMucOptions().setError(MucOptions.Error.SERVER_NOT_FOUND);
2308						updateConversationUi();
2309					} else {
2310						join(conversation);
2311						fetchConferenceConfiguration(conversation);
2312					}
2313				}
2314			});
2315			updateConversationUi();
2316		} else {
2317			account.pendingConferenceJoins.add(conversation);
2318			conversation.resetMucOptions();
2319			conversation.setHasMessagesLeftOnServer(false);
2320			updateConversationUi();
2321		}
2322	}
2323
2324	private void fetchConferenceMembers(final Conversation conversation) {
2325		final Account account = conversation.getAccount();
2326		final AxolotlService axolotlService = account.getAxolotlService();
2327		final String[] affiliations = {"member", "admin", "owner"};
2328		OnIqPacketReceived callback = new OnIqPacketReceived() {
2329
2330			private int i = 0;
2331			private boolean success = true;
2332
2333			@Override
2334			public void onIqPacketReceived(Account account, IqPacket packet) {
2335
2336				Element query = packet.query("http://jabber.org/protocol/muc#admin");
2337				if (packet.getType() == IqPacket.TYPE.RESULT && query != null) {
2338					for (Element child : query.getChildren()) {
2339						if ("item".equals(child.getName())) {
2340							MucOptions.User user = AbstractParser.parseItem(conversation, child);
2341							if (!user.realJidMatchesAccount()) {
2342								boolean isNew = conversation.getMucOptions().updateUser(user);
2343								if (isNew && user.getRealJid() != null && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
2344									axolotlService.fetchDeviceIds(user.getRealJid());
2345								}
2346							}
2347						}
2348					}
2349				} else {
2350					success = false;
2351					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not request affiliation " + affiliations[i] + " in " + conversation.getJid().toBareJid());
2352				}
2353				++i;
2354				if (i >= affiliations.length) {
2355					List<Jid> members = conversation.getMucOptions().getMembers();
2356					if (success) {
2357						List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
2358						boolean changed = false;
2359						for (ListIterator<Jid> iterator = cryptoTargets.listIterator(); iterator.hasNext(); ) {
2360							Jid jid = iterator.next();
2361							if (!members.contains(jid)) {
2362								iterator.remove();
2363								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
2364								changed = true;
2365							}
2366						}
2367						if (changed) {
2368							conversation.setAcceptedCryptoTargets(cryptoTargets);
2369							updateConversation(conversation);
2370						}
2371					}
2372					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": retrieved members for " + conversation.getJid().toBareJid() + ": " + conversation.getMucOptions().getMembers());
2373					getAvatarService().clear(conversation);
2374					updateMucRosterUi();
2375					updateConversationUi();
2376				}
2377			}
2378		};
2379		for (String affiliation : affiliations) {
2380			sendIqPacket(account, mIqGenerator.queryAffiliation(conversation, affiliation), callback);
2381		}
2382		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching members for " + conversation.getName());
2383	}
2384
2385	public void providePasswordForMuc(Conversation conversation, String password) {
2386		if (conversation.getMode() == Conversation.MODE_MULTI) {
2387			conversation.getMucOptions().setPassword(password);
2388			if (conversation.getBookmark() != null) {
2389				if (respectAutojoin()) {
2390					conversation.getBookmark().setAutojoin(true);
2391				}
2392				pushBookmarks(conversation.getAccount());
2393			}
2394			updateConversation(conversation);
2395			joinMuc(conversation);
2396		}
2397	}
2398
2399	private boolean hasEnabledAccounts() {
2400		for (Account account : this.accounts) {
2401			if (account.isEnabled()) {
2402				return true;
2403			}
2404		}
2405		return false;
2406	}
2407
2408	public void persistSelfNick(MucOptions.User self) {
2409		final Conversation conversation = self.getConversation();
2410		Jid full = self.getFullJid();
2411		if (!full.equals(conversation.getJid())) {
2412			Log.d(Config.LOGTAG,"nick changed. updating");
2413			conversation.setContactJid(full);
2414			databaseBackend.updateConversation(conversation);
2415		}
2416
2417		Bookmark bookmark = conversation.getBookmark();
2418		if (bookmark != null && !full.getResourcepart().equals(bookmark.getNick())) {
2419			bookmark.setNick(full.getResourcepart());
2420			pushBookmarks(bookmark.getAccount());
2421		}
2422	}
2423
2424	public boolean renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
2425		final MucOptions options = conversation.getMucOptions();
2426		final Jid joinJid = options.createJoinJid(nick);
2427		if (joinJid == null) {
2428			return false;
2429		}
2430		if (options.online()) {
2431			Account account = conversation.getAccount();
2432			options.setOnRenameListener(new OnRenameListener() {
2433
2434				@Override
2435				public void onSuccess() {
2436					callback.success(conversation);
2437				}
2438
2439				@Override
2440				public void onFailure() {
2441					callback.error(R.string.nick_in_use, conversation);
2442				}
2443			});
2444
2445			PresencePacket packet = new PresencePacket();
2446			packet.setTo(joinJid);
2447			packet.setFrom(conversation.getAccount().getJid());
2448
2449			String sig = account.getPgpSignature();
2450			if (sig != null) {
2451				packet.addChild("status").setContent("online");
2452				packet.addChild("x", "jabber:x:signed").setContent(sig);
2453			}
2454			sendPresencePacket(account, packet);
2455		} else {
2456			conversation.setContactJid(joinJid);
2457			databaseBackend.updateConversation(conversation);
2458			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
2459				Bookmark bookmark = conversation.getBookmark();
2460				if (bookmark != null) {
2461					bookmark.setNick(nick);
2462					pushBookmarks(bookmark.getAccount());
2463				}
2464				joinMuc(conversation);
2465			}
2466		}
2467		return true;
2468	}
2469
2470	public void leaveMuc(Conversation conversation) {
2471		leaveMuc(conversation, false);
2472	}
2473
2474	private void leaveMuc(Conversation conversation, boolean now) {
2475		Account account = conversation.getAccount();
2476		account.pendingConferenceJoins.remove(conversation);
2477		account.pendingConferenceLeaves.remove(conversation);
2478		if (account.getStatus() == Account.State.ONLINE || now) {
2479			sendPresencePacket(conversation.getAccount(), mPresenceGenerator.leave(conversation.getMucOptions()));
2480			conversation.getMucOptions().setOffline();
2481			Bookmark bookmark = conversation.getBookmark();
2482			if (bookmark != null) {
2483				bookmark.setConversation(null);
2484			}
2485			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": leaving muc " + conversation.getJid());
2486		} else {
2487			account.pendingConferenceLeaves.add(conversation);
2488		}
2489	}
2490
2491	public String findConferenceServer(final Account account) {
2492		String server;
2493		if (account.getXmppConnection() != null) {
2494			server = account.getXmppConnection().getMucServer();
2495			if (server != null) {
2496				return server;
2497			}
2498		}
2499		for (Account other : getAccounts()) {
2500			if (other != account && other.getXmppConnection() != null) {
2501				server = other.getXmppConnection().getMucServer();
2502				if (server != null) {
2503					return server;
2504				}
2505			}
2506		}
2507		return null;
2508	}
2509
2510	public boolean createAdhocConference(final Account account,
2511	                                     final String subject,
2512	                                     final Iterable<Jid> jids,
2513	                                     final UiCallback<Conversation> callback) {
2514		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
2515		if (account.getStatus() == Account.State.ONLINE) {
2516			try {
2517				String server = findConferenceServer(account);
2518				if (server == null) {
2519					if (callback != null) {
2520						callback.error(R.string.no_conference_server_found, null);
2521					}
2522					return false;
2523				}
2524				final Jid jid = Jid.fromParts(new BigInteger(64, getRNG()).toString(Character.MAX_RADIX), server, null);
2525				final Conversation conversation = findOrCreateConversation(account, jid, true, false, true);
2526				joinMuc(conversation, new OnConferenceJoined() {
2527					@Override
2528					public void onConferenceJoined(final Conversation conversation) {
2529						pushConferenceConfiguration(conversation, IqGenerator.defaultRoomConfiguration(), new OnConfigurationPushed() {
2530							@Override
2531							public void onPushSucceeded() {
2532								if (subject != null && !subject.trim().isEmpty()) {
2533									pushSubjectToConference(conversation, subject.trim());
2534								}
2535								for (Jid invite : jids) {
2536									invite(conversation, invite);
2537								}
2538								if (account.countPresences() > 1) {
2539									directInvite(conversation, account.getJid().toBareJid());
2540								}
2541								saveConversationAsBookmark(conversation, subject);
2542								if (callback != null) {
2543									callback.success(conversation);
2544								}
2545							}
2546
2547							@Override
2548							public void onPushFailed() {
2549								archiveConversation(conversation);
2550								if (callback != null) {
2551									callback.error(R.string.conference_creation_failed, conversation);
2552								}
2553							}
2554						});
2555					}
2556				});
2557				return true;
2558			} catch (InvalidJidException e) {
2559				if (callback != null) {
2560					callback.error(R.string.conference_creation_failed, null);
2561				}
2562				return false;
2563			}
2564		} else {
2565			if (callback != null) {
2566				callback.error(R.string.not_connected_try_again, null);
2567			}
2568			return false;
2569		}
2570	}
2571
2572	public void fetchConferenceConfiguration(final Conversation conversation) {
2573		fetchConferenceConfiguration(conversation, null);
2574	}
2575
2576	public void fetchConferenceConfiguration(final Conversation conversation, final OnConferenceConfigurationFetched callback) {
2577		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2578		request.setTo(conversation.getJid().toBareJid());
2579		request.query("http://jabber.org/protocol/disco#info");
2580		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2581			@Override
2582			public void onIqPacketReceived(Account account, IqPacket packet) {
2583				Element query = packet.findChild("query", "http://jabber.org/protocol/disco#info");
2584				if (packet.getType() == IqPacket.TYPE.RESULT && query != null) {
2585					ArrayList<String> features = new ArrayList<>();
2586					for (Element child : query.getChildren()) {
2587						if (child != null && child.getName().equals("feature")) {
2588							String var = child.getAttribute("var");
2589							if (var != null) {
2590								features.add(var);
2591							}
2592						}
2593					}
2594					Element form = query.findChild("x", Namespace.DATA);
2595					if (form != null) {
2596						conversation.getMucOptions().updateFormData(Data.parse(form));
2597					}
2598					conversation.getMucOptions().updateFeatures(features);
2599					if (callback != null) {
2600						callback.onConferenceConfigurationFetched(conversation);
2601					}
2602					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetched muc configuration for " + conversation.getJid().toBareJid() + " - " + features.toString());
2603					updateConversationUi();
2604				} else if (packet.getType() == IqPacket.TYPE.ERROR) {
2605					if (callback != null) {
2606						callback.onFetchFailed(conversation, packet.getError());
2607					}
2608				}
2609			}
2610		});
2611	}
2612
2613	public void pushNodeConfiguration(Account account, final String node, final Bundle options, final OnConfigurationPushed callback) {
2614		pushNodeConfiguration(account, account.getJid().toBareJid(), node, options, callback);
2615	}
2616
2617	public void pushNodeConfiguration(Account account, final Jid jid, final String node, final Bundle options, final OnConfigurationPushed callback) {
2618		sendIqPacket(account, mIqGenerator.requestPubsubConfiguration(jid, node), new OnIqPacketReceived() {
2619			@Override
2620			public void onIqPacketReceived(Account account, IqPacket packet) {
2621				if (packet.getType() == IqPacket.TYPE.RESULT) {
2622					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub#owner");
2623					Element configuration = pubsub == null ? null : pubsub.findChild("configure");
2624					Element x = configuration == null ? null : configuration.findChild("x", Namespace.DATA);
2625					if (x != null) {
2626						Data data = Data.parse(x);
2627						data.submit(options);
2628						sendIqPacket(account, mIqGenerator.publishPubsubConfiguration(jid, node, data), new OnIqPacketReceived() {
2629							@Override
2630							public void onIqPacketReceived(Account account, IqPacket packet) {
2631								if (packet.getType() == IqPacket.TYPE.RESULT && callback != null) {
2632									callback.onPushSucceeded();
2633								} else {
2634									Log.d(Config.LOGTAG, packet.toString());
2635								}
2636							}
2637						});
2638					} else if (callback != null) {
2639						callback.onPushFailed();
2640					}
2641				} else if (callback != null) {
2642					callback.onPushFailed();
2643				}
2644			}
2645		});
2646	}
2647
2648	public void pushConferenceConfiguration(final Conversation conversation, final Bundle options, final OnConfigurationPushed callback) {
2649		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2650		request.setTo(conversation.getJid().toBareJid());
2651		request.query("http://jabber.org/protocol/muc#owner");
2652		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2653			@Override
2654			public void onIqPacketReceived(Account account, IqPacket packet) {
2655				if (packet.getType() == IqPacket.TYPE.RESULT) {
2656					Data data = Data.parse(packet.query().findChild("x", Namespace.DATA));
2657					data.submit(options);
2658					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
2659					set.setTo(conversation.getJid().toBareJid());
2660					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
2661					sendIqPacket(account, set, new OnIqPacketReceived() {
2662						@Override
2663						public void onIqPacketReceived(Account account, IqPacket packet) {
2664							if (callback != null) {
2665								if (packet.getType() == IqPacket.TYPE.RESULT) {
2666									callback.onPushSucceeded();
2667								} else {
2668									callback.onPushFailed();
2669								}
2670							}
2671						}
2672					});
2673				} else {
2674					if (callback != null) {
2675						callback.onPushFailed();
2676					}
2677				}
2678			}
2679		});
2680	}
2681
2682	public void pushSubjectToConference(final Conversation conference, final String subject) {
2683		MessagePacket packet = this.getMessageGenerator().conferenceSubject(conference, subject);
2684		this.sendMessagePacket(conference.getAccount(), packet);
2685		final MucOptions mucOptions = conference.getMucOptions();
2686		final MucOptions.User self = mucOptions.getSelf();
2687		if (self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
2688			Bundle options = new Bundle();
2689			options.putString("muc#roomconfig_persistentroom", "1");
2690			options.putString("muc#roomconfig_roomname", subject);
2691			this.pushConferenceConfiguration(conference, options, null);
2692		}
2693	}
2694
2695	public void changeAffiliationInConference(final Conversation conference, Jid user, final MucOptions.Affiliation affiliation, final OnAffiliationChanged callback) {
2696		final Jid jid = user.toBareJid();
2697		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jid, affiliation.toString());
2698		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
2699			@Override
2700			public void onIqPacketReceived(Account account, IqPacket packet) {
2701				if (packet.getType() == IqPacket.TYPE.RESULT) {
2702					conference.getMucOptions().changeAffiliation(jid, affiliation);
2703					getAvatarService().clear(conference);
2704					callback.onAffiliationChangedSuccessful(jid);
2705				} else {
2706					callback.onAffiliationChangeFailed(jid, R.string.could_not_change_affiliation);
2707				}
2708			}
2709		});
2710	}
2711
2712	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
2713		List<Jid> jids = new ArrayList<>();
2714		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
2715			if (user.getAffiliation() == before && user.getRealJid() != null) {
2716				jids.add(user.getRealJid());
2717			}
2718		}
2719		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jids, after.toString());
2720		sendIqPacket(conference.getAccount(), request, mDefaultIqHandler);
2721	}
2722
2723	public void changeRoleInConference(final Conversation conference, final String nick, MucOptions.Role role, final OnRoleChanged callback) {
2724		IqPacket request = this.mIqGenerator.changeRole(conference, nick, role.toString());
2725		Log.d(Config.LOGTAG, request.toString());
2726		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
2727			@Override
2728			public void onIqPacketReceived(Account account, IqPacket packet) {
2729				Log.d(Config.LOGTAG, packet.toString());
2730				if (packet.getType() == IqPacket.TYPE.RESULT) {
2731					callback.onRoleChangedSuccessful(nick);
2732				} else {
2733					callback.onRoleChangeFailed(nick, R.string.could_not_change_role);
2734				}
2735			}
2736		});
2737	}
2738
2739	private void disconnect(Account account, boolean force) {
2740		if ((account.getStatus() == Account.State.ONLINE)
2741				|| (account.getStatus() == Account.State.DISABLED)) {
2742			final XmppConnection connection = account.getXmppConnection();
2743			if (!force) {
2744				List<Conversation> conversations = getConversations();
2745				for (Conversation conversation : conversations) {
2746					if (conversation.getAccount() == account) {
2747						if (conversation.getMode() == Conversation.MODE_MULTI) {
2748							leaveMuc(conversation, true);
2749						} else {
2750							if (conversation.endOtrIfNeeded()) {
2751								Log.d(Config.LOGTAG, account.getJid().toBareJid()
2752										+ ": ended otr session with "
2753										+ conversation.getJid());
2754							}
2755						}
2756					}
2757				}
2758				sendOfflinePresence(account);
2759			}
2760			connection.disconnect(force);
2761		}
2762	}
2763
2764	@Override
2765	public IBinder onBind(Intent intent) {
2766		return mBinder;
2767	}
2768
2769	public void updateMessage(Message message) {
2770		databaseBackend.updateMessage(message);
2771		updateConversationUi();
2772	}
2773
2774	public void updateMessage(Message message, String uuid) {
2775		databaseBackend.updateMessage(message, uuid);
2776		updateConversationUi();
2777	}
2778
2779	protected void syncDirtyContacts(Account account) {
2780		for (Contact contact : account.getRoster().getContacts()) {
2781			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
2782				pushContactToServer(contact);
2783			}
2784			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
2785				deleteContactOnServer(contact);
2786			}
2787		}
2788	}
2789
2790	public void createContact(Contact contact) {
2791		boolean autoGrant = getBooleanPreference("grant_new_contacts", R.bool.grant_new_contacts);
2792		if (autoGrant) {
2793			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
2794			contact.setOption(Contact.Options.ASKING);
2795		}
2796		pushContactToServer(contact);
2797	}
2798
2799	public void onOtrSessionEstablished(Conversation conversation) {
2800		final Account account = conversation.getAccount();
2801		final Session otrSession = conversation.getOtrSession();
2802		Log.d(Config.LOGTAG,
2803				account.getJid().toBareJid() + " otr session established with "
2804						+ conversation.getJid() + "/"
2805						+ otrSession.getSessionID().getUserID());
2806		conversation.findUnsentMessagesWithEncryption(Message.ENCRYPTION_OTR, new Conversation.OnMessageFound() {
2807
2808			@Override
2809			public void onMessageFound(Message message) {
2810				SessionID id = otrSession.getSessionID();
2811				try {
2812					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
2813				} catch (InvalidJidException e) {
2814					return;
2815				}
2816				if (message.needsUploading()) {
2817					mJingleConnectionManager.createNewConnection(message);
2818				} else {
2819					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message);
2820					if (outPacket != null) {
2821						mMessageGenerator.addDelay(outPacket, message.getTimeSent());
2822						message.setStatus(Message.STATUS_SEND);
2823						databaseBackend.updateMessage(message);
2824						sendMessagePacket(account, outPacket);
2825					}
2826				}
2827				updateConversationUi();
2828			}
2829		});
2830	}
2831
2832	public boolean renewSymmetricKey(Conversation conversation) {
2833		Account account = conversation.getAccount();
2834		byte[] symmetricKey = new byte[32];
2835		this.mRandom.nextBytes(symmetricKey);
2836		Session otrSession = conversation.getOtrSession();
2837		if (otrSession != null) {
2838			MessagePacket packet = new MessagePacket();
2839			packet.setType(MessagePacket.TYPE_CHAT);
2840			packet.setFrom(account.getJid());
2841			MessageGenerator.addMessageHints(packet);
2842			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
2843					+ otrSession.getSessionID().getUserID());
2844			try {
2845				packet.setBody(otrSession
2846						.transformSending(CryptoHelper.FILETRANSFER
2847								+ CryptoHelper.bytesToHex(symmetricKey))[0]);
2848				sendMessagePacket(account, packet);
2849				conversation.setSymmetricKey(symmetricKey);
2850				return true;
2851			} catch (OtrException e) {
2852				return false;
2853			}
2854		}
2855		return false;
2856	}
2857
2858	public void pushContactToServer(final Contact contact) {
2859		contact.resetOption(Contact.Options.DIRTY_DELETE);
2860		contact.setOption(Contact.Options.DIRTY_PUSH);
2861		final Account account = contact.getAccount();
2862		if (account.getStatus() == Account.State.ONLINE) {
2863			final boolean ask = contact.getOption(Contact.Options.ASKING);
2864			final boolean sendUpdates = contact
2865					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
2866					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
2867			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2868			iq.query(Namespace.ROSTER).addChild(contact.asElement());
2869			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
2870			if (sendUpdates) {
2871				sendPresencePacket(account,
2872						mPresenceGenerator.sendPresenceUpdatesTo(contact));
2873			}
2874			if (ask) {
2875				sendPresencePacket(account,
2876						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
2877			}
2878		}
2879	}
2880
2881	public void publishAvatar(final Account account, final Uri image, final UiCallback<Avatar> callback) {
2882		new Thread(() -> {
2883			final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
2884			final int size = Config.AVATAR_SIZE;
2885			final Avatar avatar = getFileBackend().getPepAvatar(image, size, format);
2886			if (avatar != null) {
2887				if (!getFileBackend().save(avatar)) {
2888					callback.error(R.string.error_saving_avatar, avatar);
2889					return;
2890				}
2891				publishAvatar(account, avatar, callback);
2892			} else {
2893				callback.error(R.string.error_publish_avatar_converting, null);
2894			}
2895		}).start();
2896
2897	}
2898
2899	public void publishAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2900		IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
2901		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2902
2903			@Override
2904			public void onIqPacketReceived(Account account, IqPacket result) {
2905				if (result.getType() == IqPacket.TYPE.RESULT) {
2906					final IqPacket packet = XmppConnectionService.this.mIqGenerator.publishAvatarMetadata(avatar);
2907					sendIqPacket(account, packet, new OnIqPacketReceived() {
2908						@Override
2909						public void onIqPacketReceived(Account account, IqPacket result) {
2910							if (result.getType() == IqPacket.TYPE.RESULT) {
2911								if (account.setAvatar(avatar.getFilename())) {
2912									getAvatarService().clear(account);
2913									databaseBackend.updateAccount(account);
2914								}
2915								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": published avatar " + (avatar.size / 1024) + "KiB");
2916								if (callback != null) {
2917									callback.success(avatar);
2918								}
2919							} else {
2920								if (callback != null) {
2921									callback.error(R.string.error_publish_avatar_server_reject, avatar);
2922								}
2923							}
2924						}
2925					});
2926				} else {
2927					Element error = result.findChild("error");
2928					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server rejected avatar " + (avatar.size / 1024) + "KiB " + (error != null ? error.toString() : ""));
2929					if (callback != null) {
2930						callback.error(R.string.error_publish_avatar_server_reject, avatar);
2931					}
2932				}
2933			}
2934		});
2935	}
2936
2937	public void republishAvatarIfNeeded(Account account) {
2938		if (account.getAxolotlService().isPepBroken()) {
2939			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": skipping republication of avatar because pep is broken");
2940			return;
2941		}
2942		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
2943		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2944
2945			private Avatar parseAvatar(IqPacket packet) {
2946				Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
2947				if (pubsub != null) {
2948					Element items = pubsub.findChild("items");
2949					if (items != null) {
2950						return Avatar.parseMetadata(items);
2951					}
2952				}
2953				return null;
2954			}
2955
2956			private boolean errorIsItemNotFound(IqPacket packet) {
2957				Element error = packet.findChild("error");
2958				return packet.getType() == IqPacket.TYPE.ERROR
2959						&& error != null
2960						&& error.hasChild("item-not-found");
2961			}
2962
2963			@Override
2964			public void onIqPacketReceived(Account account, IqPacket packet) {
2965				if (packet.getType() == IqPacket.TYPE.RESULT || errorIsItemNotFound(packet)) {
2966					Avatar serverAvatar = parseAvatar(packet);
2967					if (serverAvatar == null && account.getAvatar() != null) {
2968						Avatar avatar = fileBackend.getStoredPepAvatar(account.getAvatar());
2969						if (avatar != null) {
2970							Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": avatar on server was null. republishing");
2971							publishAvatar(account, fileBackend.getStoredPepAvatar(account.getAvatar()), null);
2972						} else {
2973							Log.e(Config.LOGTAG, account.getJid().toBareJid() + ": error rereading avatar");
2974						}
2975					}
2976				}
2977			}
2978		});
2979	}
2980
2981	public void fetchAvatar(Account account, Avatar avatar) {
2982		fetchAvatar(account, avatar, null);
2983	}
2984
2985	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2986		final String KEY = generateFetchKey(account, avatar);
2987		synchronized (this.mInProgressAvatarFetches) {
2988			if (!this.mInProgressAvatarFetches.contains(KEY)) {
2989				switch (avatar.origin) {
2990					case PEP:
2991						this.mInProgressAvatarFetches.add(KEY);
2992						fetchAvatarPep(account, avatar, callback);
2993						break;
2994					case VCARD:
2995						this.mInProgressAvatarFetches.add(KEY);
2996						fetchAvatarVcard(account, avatar, callback);
2997						break;
2998				}
2999			}
3000		}
3001	}
3002
3003	private void fetchAvatarPep(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
3004		IqPacket packet = this.mIqGenerator.retrievePepAvatar(avatar);
3005		sendIqPacket(account, packet, new OnIqPacketReceived() {
3006
3007			@Override
3008			public void onIqPacketReceived(Account account, IqPacket result) {
3009				synchronized (mInProgressAvatarFetches) {
3010					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
3011				}
3012				final String ERROR = account.getJid().toBareJid()
3013						+ ": fetching avatar for " + avatar.owner + " failed ";
3014				if (result.getType() == IqPacket.TYPE.RESULT) {
3015					avatar.image = mIqParser.avatarData(result);
3016					if (avatar.image != null) {
3017						if (getFileBackend().save(avatar)) {
3018							if (account.getJid().toBareJid().equals(avatar.owner)) {
3019								if (account.setAvatar(avatar.getFilename())) {
3020									databaseBackend.updateAccount(account);
3021								}
3022								getAvatarService().clear(account);
3023								updateConversationUi();
3024								updateAccountUi();
3025							} else {
3026								Contact contact = account.getRoster()
3027										.getContact(avatar.owner);
3028								contact.setAvatar(avatar);
3029								getAvatarService().clear(contact);
3030								updateConversationUi();
3031								updateRosterUi();
3032							}
3033							if (callback != null) {
3034								callback.success(avatar);
3035							}
3036							Log.d(Config.LOGTAG, account.getJid().toBareJid()
3037									+ ": successfully fetched pep avatar for " + avatar.owner);
3038							return;
3039						}
3040					} else {
3041
3042						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
3043					}
3044				} else {
3045					Element error = result.findChild("error");
3046					if (error == null) {
3047						Log.d(Config.LOGTAG, ERROR + "(server error)");
3048					} else {
3049						Log.d(Config.LOGTAG, ERROR + error.toString());
3050					}
3051				}
3052				if (callback != null) {
3053					callback.error(0, null);
3054				}
3055
3056			}
3057		});
3058	}
3059
3060	private void fetchAvatarVcard(final Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
3061		IqPacket packet = this.mIqGenerator.retrieveVcardAvatar(avatar);
3062		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3063			@Override
3064			public void onIqPacketReceived(Account account, IqPacket packet) {
3065				synchronized (mInProgressAvatarFetches) {
3066					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
3067				}
3068				if (packet.getType() == IqPacket.TYPE.RESULT) {
3069					Element vCard = packet.findChild("vCard", "vcard-temp");
3070					Element photo = vCard != null ? vCard.findChild("PHOTO") : null;
3071					String image = photo != null ? photo.findChildContent("BINVAL") : null;
3072					if (image != null) {
3073						avatar.image = image;
3074						if (getFileBackend().save(avatar)) {
3075							Log.d(Config.LOGTAG, account.getJid().toBareJid()
3076									+ ": successfully fetched vCard avatar for " + avatar.owner);
3077							if (avatar.owner.isBareJid()) {
3078								if (account.getJid().toBareJid().equals(avatar.owner) && account.getAvatar() == null) {
3079									Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": had no avatar. replacing with vcard");
3080									account.setAvatar(avatar.getFilename());
3081									databaseBackend.updateAccount(account);
3082									getAvatarService().clear(account);
3083									updateAccountUi();
3084								} else {
3085									Contact contact = account.getRoster().getContact(avatar.owner);
3086									contact.setAvatar(avatar);
3087									getAvatarService().clear(contact);
3088									updateRosterUi();
3089								}
3090								updateConversationUi();
3091							} else {
3092								Conversation conversation = find(account, avatar.owner.toBareJid());
3093								if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
3094									MucOptions.User user = conversation.getMucOptions().findUserByFullJid(avatar.owner);
3095									if (user != null) {
3096										if (user.setAvatar(avatar)) {
3097											getAvatarService().clear(user);
3098											updateConversationUi();
3099											updateMucRosterUi();
3100										}
3101									}
3102								}
3103							}
3104						}
3105					}
3106				}
3107			}
3108		});
3109	}
3110
3111	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
3112		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
3113		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3114
3115			@Override
3116			public void onIqPacketReceived(Account account, IqPacket packet) {
3117				if (packet.getType() == IqPacket.TYPE.RESULT) {
3118					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
3119					if (pubsub != null) {
3120						Element items = pubsub.findChild("items");
3121						if (items != null) {
3122							Avatar avatar = Avatar.parseMetadata(items);
3123							if (avatar != null) {
3124								avatar.owner = account.getJid().toBareJid();
3125								if (fileBackend.isAvatarCached(avatar)) {
3126									if (account.setAvatar(avatar.getFilename())) {
3127										databaseBackend.updateAccount(account);
3128									}
3129									getAvatarService().clear(account);
3130									callback.success(avatar);
3131								} else {
3132									fetchAvatarPep(account, avatar, callback);
3133								}
3134								return;
3135							}
3136						}
3137					}
3138				}
3139				callback.error(0, null);
3140			}
3141		});
3142	}
3143
3144	public void deleteContactOnServer(Contact contact) {
3145		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
3146		contact.resetOption(Contact.Options.DIRTY_PUSH);
3147		contact.setOption(Contact.Options.DIRTY_DELETE);
3148		Account account = contact.getAccount();
3149		if (account.getStatus() == Account.State.ONLINE) {
3150			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
3151			Element item = iq.query(Namespace.ROSTER).addChild("item");
3152			item.setAttribute("jid", contact.getJid().toString());
3153			item.setAttribute("subscription", "remove");
3154			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
3155		}
3156	}
3157
3158	public void updateConversation(final Conversation conversation) {
3159		mDatabaseWriterExecutor.execute(new Runnable() {
3160			@Override
3161			public void run() {
3162				databaseBackend.updateConversation(conversation);
3163			}
3164		});
3165	}
3166
3167	private void reconnectAccount(final Account account, final boolean force, final boolean interactive) {
3168		synchronized (account) {
3169			XmppConnection connection = account.getXmppConnection();
3170			if (connection == null) {
3171				connection = createConnection(account);
3172				account.setXmppConnection(connection);
3173			}
3174			boolean hasInternet = hasInternetConnection();
3175			if (account.isEnabled() && hasInternet) {
3176				if (!force) {
3177					disconnect(account, false);
3178				}
3179				Thread thread = new Thread(connection);
3180				connection.setInteractive(interactive);
3181				connection.prepareNewConnection();
3182				connection.interrupt();
3183				thread.start();
3184				scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
3185			} else {
3186				disconnect(account, force || account.getTrueStatus().isError() || !hasInternet);
3187				account.getRoster().clearPresences();
3188				connection.resetEverything();
3189				final AxolotlService axolotlService = account.getAxolotlService();
3190				if (axolotlService != null) {
3191					axolotlService.resetBrokenness();
3192				}
3193				if (!hasInternet) {
3194					account.setStatus(Account.State.NO_INTERNET);
3195				}
3196			}
3197		}
3198	}
3199
3200	public void reconnectAccountInBackground(final Account account) {
3201		new Thread(new Runnable() {
3202			@Override
3203			public void run() {
3204				reconnectAccount(account, false, true);
3205			}
3206		}).start();
3207	}
3208
3209	public void invite(Conversation conversation, Jid contact) {
3210		Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": inviting " + contact + " to " + conversation.getJid().toBareJid());
3211		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
3212		sendMessagePacket(conversation.getAccount(), packet);
3213	}
3214
3215	public void directInvite(Conversation conversation, Jid jid) {
3216		MessagePacket packet = mMessageGenerator.directInvite(conversation, jid);
3217		sendMessagePacket(conversation.getAccount(), packet);
3218	}
3219
3220	public void resetSendingToWaiting(Account account) {
3221		for (Conversation conversation : getConversations()) {
3222			if (conversation.getAccount() == account) {
3223				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
3224
3225					@Override
3226					public void onMessageFound(Message message) {
3227						markMessage(message, Message.STATUS_WAITING);
3228					}
3229				});
3230			}
3231		}
3232	}
3233
3234	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status) {
3235		return markMessage(account, recipient, uuid, status, null);
3236	}
3237
3238	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status, String errorMessage) {
3239		if (uuid == null) {
3240			return null;
3241		}
3242		for (Conversation conversation : getConversations()) {
3243			if (conversation.getJid().toBareJid().equals(recipient) && conversation.getAccount() == account) {
3244				final Message message = conversation.findSentMessageWithUuidOrRemoteId(uuid);
3245				if (message != null) {
3246					markMessage(message, status, errorMessage);
3247				}
3248				return message;
3249			}
3250		}
3251		return null;
3252	}
3253
3254	public boolean markMessage(Conversation conversation, String uuid, int status, String serverMessageId) {
3255		if (uuid == null) {
3256			return false;
3257		} else {
3258			Message message = conversation.findSentMessageWithUuid(uuid);
3259			if (message != null) {
3260				if (message.getServerMsgId() == null) {
3261					message.setServerMsgId(serverMessageId);
3262				}
3263				markMessage(message, status);
3264				return true;
3265			} else {
3266				return false;
3267			}
3268		}
3269	}
3270
3271	public void markMessage(Message message, int status) {
3272		markMessage(message, status, null);
3273	}
3274
3275
3276	public void markMessage(Message message, int status, String errorMessage) {
3277		if (status == Message.STATUS_SEND_FAILED
3278				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
3279				.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
3280			return;
3281		}
3282		message.setErrorMessage(errorMessage);
3283		message.setStatus(status);
3284		databaseBackend.updateMessage(message);
3285		updateConversationUi();
3286	}
3287
3288	private SharedPreferences getPreferences() {
3289		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
3290	}
3291
3292	public long getAutomaticMessageDeletionDate() {
3293		final long timeout = getLongPreference(SettingsActivity.AUTOMATIC_MESSAGE_DELETION, R.integer.automatic_message_deletion);
3294		return timeout == 0 ? timeout : (System.currentTimeMillis() - (timeout * 1000));
3295	}
3296
3297	public long getLongPreference(String name, @IntegerRes int res) {
3298		long defaultValue = getResources().getInteger(res);
3299		try {
3300			return Long.parseLong(getPreferences().getString(name, String.valueOf(defaultValue)));
3301		} catch (NumberFormatException e) {
3302			return defaultValue;
3303		}
3304	}
3305
3306	public boolean getBooleanPreference(String name, @BoolRes int res) {
3307		return getPreferences().getBoolean(name, getResources().getBoolean(res));
3308	}
3309
3310	public boolean confirmMessages() {
3311		return getBooleanPreference("confirm_messages", R.bool.confirm_messages);
3312	}
3313
3314	public boolean allowMessageCorrection() {
3315		return getBooleanPreference("allow_message_correction", R.bool.allow_message_correction);
3316	}
3317
3318	public boolean sendChatStates() {
3319		return getBooleanPreference("chat_states", R.bool.chat_states);
3320	}
3321
3322	private boolean respectAutojoin() {
3323		return getBooleanPreference("autojoin", R.bool.autojoin);
3324	}
3325
3326	public boolean indicateReceived() {
3327		return getBooleanPreference("indicate_received", R.bool.indicate_received);
3328	}
3329
3330	public boolean useTorToConnect() {
3331		return Config.FORCE_ORBOT || getBooleanPreference("use_tor", R.bool.use_tor);
3332	}
3333
3334	public boolean showExtendedConnectionOptions() {
3335		return getBooleanPreference("show_connection_options", R.bool.show_connection_options);
3336	}
3337
3338	public boolean broadcastLastActivity() {
3339		return getBooleanPreference(SettingsActivity.BROADCAST_LAST_ACTIVITY, R.bool.last_activity);
3340	}
3341
3342	public int unreadCount() {
3343		int count = 0;
3344		for (Conversation conversation : getConversations()) {
3345			count += conversation.unreadCount();
3346		}
3347		return count;
3348	}
3349
3350
3351	public void showErrorToastInUi(int resId) {
3352		if (mOnShowErrorToast != null) {
3353			mOnShowErrorToast.onShowErrorToast(resId);
3354		}
3355	}
3356
3357	public void updateConversationUi() {
3358		if (mOnConversationUpdate != null) {
3359			mOnConversationUpdate.onConversationUpdate();
3360		}
3361	}
3362
3363	public void updateAccountUi() {
3364		if (mOnAccountUpdate != null) {
3365			mOnAccountUpdate.onAccountUpdate();
3366		}
3367	}
3368
3369	public void updateRosterUi() {
3370		if (mOnRosterUpdate != null) {
3371			mOnRosterUpdate.onRosterUpdate();
3372		}
3373	}
3374
3375	public boolean displayCaptchaRequest(Account account, String id, Data data, Bitmap captcha) {
3376		if (mOnCaptchaRequested != null) {
3377			DisplayMetrics metrics = getApplicationContext().getResources().getDisplayMetrics();
3378			Bitmap scaled = Bitmap.createScaledBitmap(captcha, (int) (captcha.getWidth() * metrics.scaledDensity),
3379					(int) (captcha.getHeight() * metrics.scaledDensity), false);
3380
3381			mOnCaptchaRequested.onCaptchaRequested(account, id, data, scaled);
3382			return true;
3383		}
3384		return false;
3385	}
3386
3387	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
3388		if (mOnUpdateBlocklist != null) {
3389			mOnUpdateBlocklist.OnUpdateBlocklist(status);
3390		}
3391	}
3392
3393	public void updateMucRosterUi() {
3394		if (mOnMucRosterUpdate != null) {
3395			mOnMucRosterUpdate.onMucRosterUpdate();
3396		}
3397	}
3398
3399	public void keyStatusUpdated(AxolotlService.FetchStatus report) {
3400		if (mOnKeyStatusUpdated != null) {
3401			mOnKeyStatusUpdated.onKeyStatusUpdated(report);
3402		}
3403	}
3404
3405	public Account findAccountByJid(final Jid accountJid) {
3406		for (Account account : this.accounts) {
3407			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
3408				return account;
3409			}
3410		}
3411		return null;
3412	}
3413
3414	public Conversation findConversationByUuid(String uuid) {
3415		for (Conversation conversation : getConversations()) {
3416			if (conversation.getUuid().equals(uuid)) {
3417				return conversation;
3418			}
3419		}
3420		return null;
3421	}
3422
3423	public boolean markRead(final Conversation conversation) {
3424		return markRead(conversation, true);
3425	}
3426
3427	public boolean markRead(final Conversation conversation, boolean clear) {
3428		if (clear) {
3429			mNotificationService.clear(conversation);
3430		}
3431		final List<Message> readMessages = conversation.markRead();
3432		if (readMessages.size() > 0) {
3433			Runnable runnable = new Runnable() {
3434				@Override
3435				public void run() {
3436					for (Message message : readMessages) {
3437						databaseBackend.updateMessage(message);
3438					}
3439				}
3440			};
3441			mDatabaseWriterExecutor.execute(runnable);
3442			updateUnreadCountBadge();
3443			return true;
3444		} else {
3445			return false;
3446		}
3447	}
3448
3449	public synchronized void updateUnreadCountBadge() {
3450		int count = unreadCount();
3451		if (unreadCount != count) {
3452			Log.d(Config.LOGTAG, "update unread count to " + count);
3453			if (count > 0) {
3454				ShortcutBadger.applyCount(getApplicationContext(), count);
3455			} else {
3456				ShortcutBadger.removeCount(getApplicationContext());
3457			}
3458			unreadCount = count;
3459		}
3460	}
3461
3462	public void sendReadMarker(final Conversation conversation) {
3463		final boolean isPrivateAndNonAnonymousMuc = conversation.getMode() == Conversation.MODE_MULTI && conversation.isPrivateAndNonAnonymous();
3464		final Message markable = conversation.getLatestMarkableMessage(isPrivateAndNonAnonymousMuc);
3465		if (this.markRead(conversation)) {
3466			updateConversationUi();
3467		}
3468		if (confirmMessages()
3469				&& markable != null
3470				&& (markable.trusted() || isPrivateAndNonAnonymousMuc)
3471				&& markable.getRemoteMsgId() != null) {
3472			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": sending read marker to " + markable.getCounterpart().toString());
3473			Account account = conversation.getAccount();
3474			final Jid to = markable.getCounterpart();
3475			final boolean groupChat = conversation.getMode() == Conversation.MODE_MULTI;
3476			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId(), markable.getCounterpart(), groupChat);
3477			this.sendMessagePacket(conversation.getAccount(), packet);
3478		}
3479	}
3480
3481	public SecureRandom getRNG() {
3482		return this.mRandom;
3483	}
3484
3485	public MemorizingTrustManager getMemorizingTrustManager() {
3486		return this.mMemorizingTrustManager;
3487	}
3488
3489	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
3490		this.mMemorizingTrustManager = trustManager;
3491	}
3492
3493	public void updateMemorizingTrustmanager() {
3494		final MemorizingTrustManager tm;
3495		final boolean dontTrustSystemCAs = getBooleanPreference("dont_trust_system_cas", R.bool.dont_trust_system_cas);
3496		if (dontTrustSystemCAs) {
3497			tm = new MemorizingTrustManager(getApplicationContext(), null);
3498		} else {
3499			tm = new MemorizingTrustManager(getApplicationContext());
3500		}
3501		setMemorizingTrustManager(tm);
3502	}
3503
3504	public PowerManager getPowerManager() {
3505		return this.pm;
3506	}
3507
3508	public LruCache<String, Bitmap> getBitmapCache() {
3509		return this.mBitmapCache;
3510	}
3511
3512	public void syncRosterToDisk(final Account account) {
3513		Runnable runnable = new Runnable() {
3514
3515			@Override
3516			public void run() {
3517				databaseBackend.writeRoster(account.getRoster());
3518			}
3519		};
3520		mDatabaseWriterExecutor.execute(runnable);
3521
3522	}
3523
3524	public List<String> getKnownHosts() {
3525		final List<String> hosts = new ArrayList<>();
3526		for (final Account account : getAccounts()) {
3527			if (!hosts.contains(account.getServer().toString())) {
3528				hosts.add(account.getServer().toString());
3529			}
3530			for (final Contact contact : account.getRoster().getContacts()) {
3531				if (contact.showInRoster()) {
3532					final String server = contact.getServer().toString();
3533					if (server != null && !hosts.contains(server)) {
3534						hosts.add(server);
3535					}
3536				}
3537			}
3538		}
3539		if (Config.DOMAIN_LOCK != null && !hosts.contains(Config.DOMAIN_LOCK)) {
3540			hosts.add(Config.DOMAIN_LOCK);
3541		}
3542		if (Config.MAGIC_CREATE_DOMAIN != null && !hosts.contains(Config.MAGIC_CREATE_DOMAIN)) {
3543			hosts.add(Config.MAGIC_CREATE_DOMAIN);
3544		}
3545		return hosts;
3546	}
3547
3548	public List<String> getKnownConferenceHosts() {
3549		final ArrayList<String> mucServers = new ArrayList<>();
3550		for (final Account account : accounts) {
3551			if (account.getXmppConnection() != null) {
3552				final String server = account.getXmppConnection().getMucServer();
3553				if (server != null && !mucServers.contains(server)) {
3554					mucServers.add(server);
3555				}
3556				for (Bookmark bookmark : account.getBookmarks()) {
3557					final Jid jid = bookmark.getJid();
3558					final String s = jid == null ? null : jid.getDomainpart();
3559					if (s != null && !mucServers.contains(s)) {
3560						mucServers.add(s);
3561					}
3562				}
3563			}
3564		}
3565		return mucServers;
3566	}
3567
3568	public void sendMessagePacket(Account account, MessagePacket packet) {
3569		XmppConnection connection = account.getXmppConnection();
3570		if (connection != null) {
3571			connection.sendMessagePacket(packet);
3572		}
3573	}
3574
3575	public void sendPresencePacket(Account account, PresencePacket packet) {
3576		XmppConnection connection = account.getXmppConnection();
3577		if (connection != null) {
3578			connection.sendPresencePacket(packet);
3579		}
3580	}
3581
3582	public void sendCreateAccountWithCaptchaPacket(Account account, String id, Data data) {
3583		final XmppConnection connection = account.getXmppConnection();
3584		if (connection != null) {
3585			IqPacket request = mIqGenerator.generateCreateAccountWithCaptcha(account, id, data);
3586			connection.sendUnmodifiedIqPacket(request, connection.registrationResponseListener,true);
3587		}
3588	}
3589
3590	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
3591		final XmppConnection connection = account.getXmppConnection();
3592		if (connection != null) {
3593			connection.sendIqPacket(packet, callback);
3594		}
3595	}
3596
3597	public void sendPresence(final Account account) {
3598		sendPresence(account, checkListeners() && broadcastLastActivity());
3599	}
3600
3601	private void sendPresence(final Account account, final boolean includeIdleTimestamp) {
3602		PresencePacket packet;
3603		if (manuallyChangePresence()) {
3604			packet = mPresenceGenerator.selfPresence(account, account.getPresenceStatus());
3605			String message = account.getPresenceStatusMessage();
3606			if (message != null && !message.isEmpty()) {
3607				packet.addChild(new Element("status").setContent(message));
3608			}
3609		} else {
3610			packet = mPresenceGenerator.selfPresence(account, getTargetPresence());
3611		}
3612		if (mLastActivity > 0 && includeIdleTimestamp) {
3613			long since = Math.min(mLastActivity, System.currentTimeMillis()); //don't send future dates
3614			packet.addChild("idle", Namespace.IDLE).setAttribute("since", AbstractGenerator.getTimestamp(since));
3615		}
3616		sendPresencePacket(account, packet);
3617	}
3618
3619	private void deactivateGracePeriod() {
3620		for (Account account : getAccounts()) {
3621			account.deactivateGracePeriod();
3622		}
3623	}
3624
3625	public void refreshAllPresences() {
3626		boolean includeIdleTimestamp = checkListeners() && broadcastLastActivity();
3627		for (Account account : getAccounts()) {
3628			if (account.isEnabled()) {
3629				sendPresence(account, includeIdleTimestamp);
3630			}
3631		}
3632	}
3633
3634	private void refreshAllGcmTokens() {
3635		for (Account account : getAccounts()) {
3636			if (account.isOnlineAndConnected() && mPushManagementService.available(account)) {
3637				mPushManagementService.registerPushTokenOnServer(account);
3638			}
3639		}
3640	}
3641
3642	private void sendOfflinePresence(final Account account) {
3643		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": sending offline presence");
3644		sendPresencePacket(account, mPresenceGenerator.sendOfflinePresence(account));
3645	}
3646
3647	public MessageGenerator getMessageGenerator() {
3648		return this.mMessageGenerator;
3649	}
3650
3651	public PresenceGenerator getPresenceGenerator() {
3652		return this.mPresenceGenerator;
3653	}
3654
3655	public IqGenerator getIqGenerator() {
3656		return this.mIqGenerator;
3657	}
3658
3659	public IqParser getIqParser() {
3660		return this.mIqParser;
3661	}
3662
3663	public JingleConnectionManager getJingleConnectionManager() {
3664		return this.mJingleConnectionManager;
3665	}
3666
3667	public MessageArchiveService getMessageArchiveService() {
3668		return this.mMessageArchiveService;
3669	}
3670
3671	public List<Contact> findContacts(Jid jid, String accountJid) {
3672		ArrayList<Contact> contacts = new ArrayList<>();
3673		for (Account account : getAccounts()) {
3674			if ((account.isEnabled() || accountJid != null)
3675					&& (accountJid == null || accountJid.equals(account.getJid().toBareJid().toString()))) {
3676				Contact contact = account.getRoster().getContactFromRoster(jid);
3677				if (contact != null) {
3678					contacts.add(contact);
3679				}
3680			}
3681		}
3682		return contacts;
3683	}
3684
3685	public Conversation findFirstMuc(Jid jid) {
3686		for (Conversation conversation : getConversations()) {
3687			if (conversation.getAccount().isEnabled() && conversation.getJid().toBareJid().equals(jid.toBareJid()) && conversation.getMode() == Conversation.MODE_MULTI) {
3688				return conversation;
3689			}
3690		}
3691		return null;
3692	}
3693
3694	public NotificationService getNotificationService() {
3695		return this.mNotificationService;
3696	}
3697
3698	public HttpConnectionManager getHttpConnectionManager() {
3699		return this.mHttpConnectionManager;
3700	}
3701
3702	public void resendFailedMessages(final Message message) {
3703		final Collection<Message> messages = new ArrayList<>();
3704		Message current = message;
3705		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
3706			messages.add(current);
3707			if (current.mergeable(current.next())) {
3708				current = current.next();
3709			} else {
3710				break;
3711			}
3712		}
3713		for (final Message msg : messages) {
3714			msg.setTime(System.currentTimeMillis());
3715			markMessage(msg, Message.STATUS_WAITING);
3716			this.resendMessage(msg, false);
3717		}
3718	}
3719
3720	public void clearConversationHistory(final Conversation conversation) {
3721		final long clearDate;
3722		final String reference;
3723		if (conversation.countMessages() > 0) {
3724			Message latestMessage = conversation.getLatestMessage();
3725			clearDate = latestMessage.getTimeSent() + 1000;
3726			reference = latestMessage.getServerMsgId();
3727		} else {
3728			clearDate = System.currentTimeMillis();
3729			reference = null;
3730		}
3731		conversation.clearMessages();
3732		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
3733		conversation.setLastClearHistory(clearDate, reference);
3734		Runnable runnable = new Runnable() {
3735			@Override
3736			public void run() {
3737				databaseBackend.deleteMessagesInConversation(conversation);
3738				databaseBackend.updateConversation(conversation);
3739			}
3740		};
3741		mDatabaseWriterExecutor.execute(runnable);
3742	}
3743
3744	public boolean sendBlockRequest(final Blockable blockable, boolean reportSpam) {
3745		if (blockable != null && blockable.getBlockedJid() != null) {
3746			final Jid jid = blockable.getBlockedJid();
3747			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid, reportSpam), new OnIqPacketReceived() {
3748
3749				@Override
3750				public void onIqPacketReceived(final Account account, final IqPacket packet) {
3751					if (packet.getType() == IqPacket.TYPE.RESULT) {
3752						account.getBlocklist().add(jid);
3753						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
3754					}
3755				}
3756			});
3757			if (removeBlockedConversations(blockable.getAccount(), jid)) {
3758				updateConversationUi();
3759				return true;
3760			} else {
3761				return false;
3762			}
3763		} else {
3764			return false;
3765		}
3766	}
3767
3768	public boolean removeBlockedConversations(final Account account, final Jid blockedJid) {
3769		boolean removed = false;
3770		synchronized (this.conversations) {
3771			boolean domainJid = blockedJid.isDomainJid();
3772			for (Conversation conversation : this.conversations) {
3773				boolean jidMatches = (domainJid && blockedJid.getDomainpart().equals(conversation.getJid().getDomainpart()))
3774						|| blockedJid.equals(conversation.getJid().toBareJid());
3775				if (conversation.getAccount() == account
3776						&& conversation.getMode() == Conversation.MODE_SINGLE
3777						&& jidMatches) {
3778					this.conversations.remove(conversation);
3779					markRead(conversation);
3780					conversation.setStatus(Conversation.STATUS_ARCHIVED);
3781					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": archiving conversation " + conversation.getJid().toBareJid() + " because jid was blocked");
3782					updateConversation(conversation);
3783					removed = true;
3784				}
3785			}
3786		}
3787		return removed;
3788	}
3789
3790	public void sendUnblockRequest(final Blockable blockable) {
3791		if (blockable != null && blockable.getJid() != null) {
3792			final Jid jid = blockable.getBlockedJid();
3793			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
3794				@Override
3795				public void onIqPacketReceived(final Account account, final IqPacket packet) {
3796					if (packet.getType() == IqPacket.TYPE.RESULT) {
3797						account.getBlocklist().remove(jid);
3798						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
3799					}
3800				}
3801			});
3802		}
3803	}
3804
3805	public void publishDisplayName(Account account) {
3806		String displayName = account.getDisplayName();
3807		if (displayName != null && !displayName.isEmpty()) {
3808			IqPacket publish = mIqGenerator.publishNick(displayName);
3809			sendIqPacket(account, publish, new OnIqPacketReceived() {
3810				@Override
3811				public void onIqPacketReceived(Account account, IqPacket packet) {
3812					if (packet.getType() == IqPacket.TYPE.ERROR) {
3813						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not publish nick");
3814					}
3815				}
3816			});
3817		}
3818	}
3819
3820	public ServiceDiscoveryResult getCachedServiceDiscoveryResult(Pair<String, String> key) {
3821		ServiceDiscoveryResult result = discoCache.get(key);
3822		if (result != null) {
3823			return result;
3824		} else {
3825			result = databaseBackend.findDiscoveryResult(key.first, key.second);
3826			if (result != null) {
3827				discoCache.put(key, result);
3828			}
3829			return result;
3830		}
3831	}
3832
3833	public void fetchCaps(Account account, final Jid jid, final Presence presence) {
3834		final Pair<String, String> key = new Pair<>(presence.getHash(), presence.getVer());
3835		ServiceDiscoveryResult disco = getCachedServiceDiscoveryResult(key);
3836		if (disco != null) {
3837			presence.setServiceDiscoveryResult(disco);
3838		} else {
3839			if (!account.inProgressDiscoFetches.contains(key)) {
3840				account.inProgressDiscoFetches.add(key);
3841				IqPacket request = new IqPacket(IqPacket.TYPE.GET);
3842				request.setTo(jid);
3843				request.query("http://jabber.org/protocol/disco#info");
3844				Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": making disco request for " + key.second + " to " + jid);
3845				sendIqPacket(account, request, new OnIqPacketReceived() {
3846					@Override
3847					public void onIqPacketReceived(Account account, IqPacket discoPacket) {
3848						if (discoPacket.getType() == IqPacket.TYPE.RESULT) {
3849							ServiceDiscoveryResult disco = new ServiceDiscoveryResult(discoPacket);
3850							if (presence.getVer().equals(disco.getVer())) {
3851								databaseBackend.insertDiscoveryResult(disco);
3852								injectServiceDiscorveryResult(account.getRoster(), presence.getHash(), presence.getVer(), disco);
3853							} else {
3854								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": mismatch in caps for contact " + jid + " " + presence.getVer() + " vs " + disco.getVer());
3855							}
3856						}
3857						account.inProgressDiscoFetches.remove(key);
3858					}
3859				});
3860			}
3861		}
3862	}
3863
3864	private void injectServiceDiscorveryResult(Roster roster, String hash, String ver, ServiceDiscoveryResult disco) {
3865		for (Contact contact : roster.getContacts()) {
3866			for (Presence presence : contact.getPresences().getPresences().values()) {
3867				if (hash.equals(presence.getHash()) && ver.equals(presence.getVer())) {
3868					presence.setServiceDiscoveryResult(disco);
3869				}
3870			}
3871		}
3872	}
3873
3874	public void fetchMamPreferences(Account account, final OnMamPreferencesFetched callback) {
3875		final boolean legacy = account.getXmppConnection().getFeatures().mamLegacy();
3876		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
3877		request.addChild("prefs", legacy ? Namespace.MAM_LEGACY : Namespace.MAM);
3878		sendIqPacket(account, request, new OnIqPacketReceived() {
3879			@Override
3880			public void onIqPacketReceived(Account account, IqPacket packet) {
3881				Element prefs = packet.findChild("prefs", legacy ? Namespace.MAM_LEGACY : Namespace.MAM);
3882				if (packet.getType() == IqPacket.TYPE.RESULT && prefs != null) {
3883					callback.onPreferencesFetched(prefs);
3884				} else {
3885					callback.onPreferencesFetchFailed();
3886				}
3887			}
3888		});
3889	}
3890
3891	public PushManagementService getPushManagementService() {
3892		return mPushManagementService;
3893	}
3894
3895	public Account getPendingAccount() {
3896		Account pending = null;
3897		for (Account account : getAccounts()) {
3898			if (account.isOptionSet(Account.OPTION_REGISTER)) {
3899				pending = account;
3900			} else {
3901				return null;
3902			}
3903		}
3904		return pending;
3905	}
3906
3907	public void changeStatus(Account account, Presence.Status status, String statusMessage, boolean send) {
3908		if (!statusMessage.isEmpty()) {
3909			databaseBackend.insertPresenceTemplate(new PresenceTemplate(status, statusMessage));
3910		}
3911		changeStatusReal(account, status, statusMessage, send);
3912	}
3913
3914	private void changeStatusReal(Account account, Presence.Status status, String statusMessage, boolean send) {
3915		account.setPresenceStatus(status);
3916		account.setPresenceStatusMessage(statusMessage);
3917		databaseBackend.updateAccount(account);
3918		if (account.isEnabled() && send) {
3919			sendPresence(account);
3920		}
3921	}
3922
3923	public void changeStatus(Presence.Status status, String statusMessage) {
3924		if (!statusMessage.isEmpty()) {
3925			databaseBackend.insertPresenceTemplate(new PresenceTemplate(status, statusMessage));
3926		}
3927		for (Account account : getAccounts()) {
3928			changeStatusReal(account, status, statusMessage, true);
3929		}
3930	}
3931
3932	public List<PresenceTemplate> getPresenceTemplates(Account account) {
3933		List<PresenceTemplate> templates = databaseBackend.getPresenceTemplates();
3934		for (PresenceTemplate template : account.getSelfContact().getPresences().asTemplates()) {
3935			if (!templates.contains(template)) {
3936				templates.add(0, template);
3937			}
3938		}
3939		return templates;
3940	}
3941
3942	public void saveConversationAsBookmark(Conversation conversation, String name) {
3943		Account account = conversation.getAccount();
3944		Bookmark bookmark = new Bookmark(account, conversation.getJid().toBareJid());
3945		if (!conversation.getJid().isBareJid()) {
3946			bookmark.setNick(conversation.getJid().getResourcepart());
3947		}
3948		if (name != null && !name.trim().isEmpty()) {
3949			bookmark.setBookmarkName(name.trim());
3950		}
3951		bookmark.setAutojoin(getPreferences().getBoolean("autojoin", getResources().getBoolean(R.bool.autojoin)));
3952		account.getBookmarks().add(bookmark);
3953		pushBookmarks(account);
3954		bookmark.setConversation(conversation);
3955	}
3956
3957	public boolean verifyFingerprints(Contact contact, List<XmppUri.Fingerprint> fingerprints) {
3958		boolean needsRosterWrite = false;
3959		boolean performedVerification = false;
3960		final AxolotlService axolotlService = contact.getAccount().getAxolotlService();
3961		for (XmppUri.Fingerprint fp : fingerprints) {
3962			if (fp.type == XmppUri.FingerprintType.OTR) {
3963				performedVerification |= contact.addOtrFingerprint(fp.fingerprint);
3964				needsRosterWrite |= performedVerification;
3965			} else if (fp.type == XmppUri.FingerprintType.OMEMO) {
3966				String fingerprint = "05" + fp.fingerprint.replaceAll("\\s", "");
3967				FingerprintStatus fingerprintStatus = axolotlService.getFingerprintTrust(fingerprint);
3968				if (fingerprintStatus != null) {
3969					if (!fingerprintStatus.isVerified()) {
3970						performedVerification = true;
3971						axolotlService.setFingerprintTrust(fingerprint, fingerprintStatus.toVerified());
3972					}
3973				} else {
3974					axolotlService.preVerifyFingerprint(contact, fingerprint);
3975				}
3976			}
3977		}
3978		if (needsRosterWrite) {
3979			syncRosterToDisk(contact.getAccount());
3980		}
3981		return performedVerification;
3982	}
3983
3984	public boolean verifyFingerprints(Account account, List<XmppUri.Fingerprint> fingerprints) {
3985		final AxolotlService axolotlService = account.getAxolotlService();
3986		boolean verifiedSomething = false;
3987		for (XmppUri.Fingerprint fp : fingerprints) {
3988			if (fp.type == XmppUri.FingerprintType.OMEMO) {
3989				String fingerprint = "05" + fp.fingerprint.replaceAll("\\s", "");
3990				Log.d(Config.LOGTAG, "trying to verify own fp=" + fingerprint);
3991				FingerprintStatus fingerprintStatus = axolotlService.getFingerprintTrust(fingerprint);
3992				if (fingerprintStatus != null) {
3993					if (!fingerprintStatus.isVerified()) {
3994						axolotlService.setFingerprintTrust(fingerprint, fingerprintStatus.toVerified());
3995						verifiedSomething = true;
3996					}
3997				} else {
3998					axolotlService.preVerifyFingerprint(account, fingerprint);
3999					verifiedSomething = true;
4000				}
4001			}
4002		}
4003		return verifiedSomething;
4004	}
4005
4006	public boolean blindTrustBeforeVerification() {
4007		return getBooleanPreference(SettingsActivity.BLIND_TRUST_BEFORE_VERIFICATION, R.bool.btbv);
4008	}
4009
4010	public ShortcutService getShortcutService() {
4011		return mShortcutService;
4012	}
4013
4014	public interface OnMamPreferencesFetched {
4015		void onPreferencesFetched(Element prefs);
4016
4017		void onPreferencesFetchFailed();
4018	}
4019
4020	public void pushMamPreferences(Account account, Element prefs) {
4021		IqPacket set = new IqPacket(IqPacket.TYPE.SET);
4022		set.addChild(prefs);
4023		sendIqPacket(account, set, null);
4024	}
4025
4026	public interface OnAccountCreated {
4027		void onAccountCreated(Account account);
4028
4029		void informUser(int r);
4030	}
4031
4032	public interface OnMoreMessagesLoaded {
4033		void onMoreMessagesLoaded(int count, Conversation conversation);
4034
4035		void informUser(int r);
4036	}
4037
4038	public interface OnAccountPasswordChanged {
4039		void onPasswordChangeSucceeded();
4040
4041		void onPasswordChangeFailed();
4042	}
4043
4044	public interface OnAffiliationChanged {
4045		void onAffiliationChangedSuccessful(Jid jid);
4046
4047		void onAffiliationChangeFailed(Jid jid, int resId);
4048	}
4049
4050	public interface OnRoleChanged {
4051		void onRoleChangedSuccessful(String nick);
4052
4053		void onRoleChangeFailed(String nick, int resid);
4054	}
4055
4056	public interface OnConversationUpdate {
4057		void onConversationUpdate();
4058	}
4059
4060	public interface OnAccountUpdate {
4061		void onAccountUpdate();
4062	}
4063
4064	public interface OnCaptchaRequested {
4065		void onCaptchaRequested(Account account,
4066		                        String id,
4067		                        Data data,
4068		                        Bitmap captcha);
4069	}
4070
4071	public interface OnRosterUpdate {
4072		void onRosterUpdate();
4073	}
4074
4075	public interface OnMucRosterUpdate {
4076		void onMucRosterUpdate();
4077	}
4078
4079	public interface OnConferenceConfigurationFetched {
4080		void onConferenceConfigurationFetched(Conversation conversation);
4081
4082		void onFetchFailed(Conversation conversation, Element error);
4083	}
4084
4085	public interface OnConferenceJoined {
4086		void onConferenceJoined(Conversation conversation);
4087	}
4088
4089	public interface OnConfigurationPushed {
4090		void onPushSucceeded();
4091
4092		void onPushFailed();
4093	}
4094
4095	public interface OnShowErrorToast {
4096		void onShowErrorToast(int resId);
4097	}
4098
4099	public class XmppConnectionBinder extends Binder {
4100		public XmppConnectionService getService() {
4101			return XmppConnectionService.this;
4102		}
4103	}
4104}