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									conversation.setBookmark(bookmark);
1428								} else if (bookmark.autojoin() && bookmark.getJid() != null && autojoin) {
1429									conversation = findOrCreateConversation(account, bookmark.getJid(), true, true, false);
1430									conversation.setBookmark(bookmark);
1431								}
1432							}
1433						}
1434					}
1435					account.setBookmarks(new ArrayList<>(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		Runnable runnable = new Runnable() {
1645			@Override
1646			public void run() {
1647				final Account account = conversation.getAccount();
1648				List<Message> messages = databaseBackend.getMessages(conversation, 50, timestamp);
1649				if (messages.size() > 0) {
1650					conversation.addAll(0, messages);
1651					checkDeletedFiles(conversation);
1652					callback.onMoreMessagesLoaded(messages.size(), conversation);
1653				} else if (conversation.hasMessagesLeftOnServer()
1654						&& account.isOnlineAndConnected()
1655						&& conversation.getLastClearHistory().getTimestamp() == 0) {
1656					if ((conversation.getMode() == Conversation.MODE_SINGLE && account.getXmppConnection().getFeatures().mam())
1657							|| (conversation.getMode() == Conversation.MODE_MULTI && conversation.getMucOptions().mamSupport())) {
1658						MessageArchiveService.Query query = getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
1659						if (query != null) {
1660							query.setCallback(callback);
1661							callback.informUser(R.string.fetching_history_from_server);
1662						} else {
1663							callback.informUser(R.string.not_fetching_history_retention_period);
1664						}
1665
1666					}
1667				}
1668			}
1669		};
1670		mDatabaseReaderExecutor.execute(runnable);
1671	}
1672
1673	public List<Account> getAccounts() {
1674		return this.accounts;
1675	}
1676
1677	public List<Conversation> findAllConferencesWith(Contact contact) {
1678		ArrayList<Conversation> results = new ArrayList<>();
1679		for (Conversation conversation : conversations) {
1680			if (conversation.getMode() == Conversation.MODE_MULTI
1681					&& conversation.getMucOptions().isContactInRoom(contact)) {
1682				results.add(conversation);
1683			}
1684		}
1685		return results;
1686	}
1687
1688	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
1689		for (final Conversation conversation : haystack) {
1690			if (conversation.getContact() == contact) {
1691				return conversation;
1692			}
1693		}
1694		return null;
1695	}
1696
1697	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1698		if (jid == null) {
1699			return null;
1700		}
1701		for (final Conversation conversation : haystack) {
1702			if ((account == null || conversation.getAccount() == account)
1703					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1704				return conversation;
1705			}
1706		}
1707		return null;
1708	}
1709
1710	public Conversation findOrCreateConversation(Account account, Jid jid, boolean muc, final boolean async) {
1711		return this.findOrCreateConversation(account, jid, muc, false, async);
1712	}
1713
1714	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final boolean joinAfterCreate, final boolean async) {
1715		return this.findOrCreateConversation(account, jid, muc, joinAfterCreate, null, async);
1716	}
1717
1718	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final boolean joinAfterCreate, final MessageArchiveService.Query query, final boolean async) {
1719		synchronized (this.conversations) {
1720			Conversation conversation = find(account, jid);
1721			if (conversation != null) {
1722				return conversation;
1723			}
1724			conversation = databaseBackend.findConversation(account, jid);
1725			final boolean loadMessagesFromDb;
1726			if (conversation != null) {
1727				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1728				conversation.setAccount(account);
1729				if (muc) {
1730					conversation.setMode(Conversation.MODE_MULTI);
1731					conversation.setContactJid(jid);
1732				} else {
1733					conversation.setMode(Conversation.MODE_SINGLE);
1734					conversation.setContactJid(jid.toBareJid());
1735				}
1736				databaseBackend.updateConversation(conversation);
1737				loadMessagesFromDb = conversation.messagesLoaded.compareAndSet(true, false);
1738			} else {
1739				String conversationName;
1740				Contact contact = account.getRoster().getContact(jid);
1741				if (contact != null) {
1742					conversationName = contact.getDisplayName();
1743				} else {
1744					conversationName = jid.getLocalpart();
1745				}
1746				if (muc) {
1747					conversation = new Conversation(conversationName, account, jid,
1748							Conversation.MODE_MULTI);
1749				} else {
1750					conversation = new Conversation(conversationName, account, jid.toBareJid(),
1751							Conversation.MODE_SINGLE);
1752				}
1753				this.databaseBackend.createConversation(conversation);
1754				loadMessagesFromDb = false;
1755			}
1756			final Conversation c = conversation;
1757			final Runnable runnable = new Runnable() {
1758				@Override
1759				public void run() {
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							&& account.getXmppConnection().getFeatures().mam()
1767							&& !muc) {
1768						if (query == null) {
1769							mMessageArchiveService.query(c);
1770						} else {
1771							if (query.getConversation() == null) {
1772								mMessageArchiveService.query(c, query.getStart(), query.isCatchup());
1773							}
1774						}
1775					}
1776					checkDeletedFiles(c);
1777					if (joinAfterCreate) {
1778						joinMuc(c);
1779					}
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(new Runnable() {
1838			@Override
1839			public void run() {
1840				try {
1841					X509Certificate[] chain = KeyChain.getCertificateChain(XmppConnectionService.this, alias);
1842					Pair<Jid, String> info = CryptoHelper.extractJidAndName(chain[0]);
1843					if (info == null) {
1844						callback.informUser(R.string.certificate_does_not_contain_jid);
1845						return;
1846					}
1847					if (findAccountByJid(info.first) == null) {
1848						Account account = new Account(info.first, "");
1849						account.setPrivateKeyAlias(alias);
1850						account.setOption(Account.OPTION_DISABLED, true);
1851						account.setDisplayName(info.second);
1852						createAccount(account);
1853						callback.onAccountCreated(account);
1854						if (Config.X509_VERIFICATION) {
1855							try {
1856								getMemorizingTrustManager().getNonInteractive(account.getJid().getDomainpart()).checkClientTrusted(chain, "RSA");
1857							} catch (CertificateException e) {
1858								callback.informUser(R.string.certificate_chain_is_not_trusted);
1859							}
1860						}
1861					} else {
1862						callback.informUser(R.string.account_already_exists);
1863					}
1864				} catch (Exception e) {
1865					e.printStackTrace();
1866					callback.informUser(R.string.unable_to_parse_certificate);
1867				}
1868			}
1869		}).start();
1870
1871	}
1872
1873	public void updateKeyInAccount(final Account account, final String alias) {
1874		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": update key in account " + alias);
1875		try {
1876			X509Certificate[] chain = KeyChain.getCertificateChain(XmppConnectionService.this, alias);
1877			Log.d(Config.LOGTAG, account.getJid().toBareJid() + " loaded certificate chain");
1878			Pair<Jid, String> info = CryptoHelper.extractJidAndName(chain[0]);
1879			if (account.getJid().toBareJid().equals(info.first)) {
1880				account.setPrivateKeyAlias(alias);
1881				account.setDisplayName(info.second);
1882				databaseBackend.updateAccount(account);
1883				if (Config.X509_VERIFICATION) {
1884					try {
1885						getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
1886					} catch (CertificateException e) {
1887						showErrorToastInUi(R.string.certificate_chain_is_not_trusted);
1888					}
1889					account.getAxolotlService().regenerateKeys(true);
1890				}
1891			} else {
1892				showErrorToastInUi(R.string.jid_does_not_match_certificate);
1893			}
1894		} catch (Exception e) {
1895			e.printStackTrace();
1896		}
1897	}
1898
1899	public boolean updateAccount(final Account account) {
1900		if (databaseBackend.updateAccount(account)) {
1901			account.setShowErrorNotification(true);
1902			this.statusListener.onStatusChanged(account);
1903			databaseBackend.updateAccount(account);
1904			reconnectAccountInBackground(account);
1905			updateAccountUi();
1906			getNotificationService().updateErrorNotification();
1907			toggleForegroundService();
1908			syncEnabledAccountSetting();
1909			return true;
1910		} else {
1911			return false;
1912		}
1913	}
1914
1915	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
1916		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
1917		sendIqPacket(account, iq, new OnIqPacketReceived() {
1918			@Override
1919			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1920				if (packet.getType() == IqPacket.TYPE.RESULT) {
1921					account.setPassword(newPassword);
1922					account.setOption(Account.OPTION_MAGIC_CREATE, false);
1923					databaseBackend.updateAccount(account);
1924					callback.onPasswordChangeSucceeded();
1925				} else {
1926					callback.onPasswordChangeFailed();
1927				}
1928			}
1929		});
1930	}
1931
1932	public void deleteAccount(final Account account) {
1933		synchronized (this.conversations) {
1934			for (final Conversation conversation : conversations) {
1935				if (conversation.getAccount() == account) {
1936					if (conversation.getMode() == Conversation.MODE_MULTI) {
1937						leaveMuc(conversation);
1938					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1939						conversation.endOtrIfNeeded();
1940					}
1941					conversations.remove(conversation);
1942				}
1943			}
1944			if (account.getXmppConnection() != null) {
1945				new Thread(new Runnable() {
1946					@Override
1947					public void run() {
1948						disconnect(account, true);
1949					}
1950				}).start();
1951			}
1952			Runnable runnable = new Runnable() {
1953				@Override
1954				public void run() {
1955					if (!databaseBackend.deleteAccount(account)) {
1956						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": unable to delete account");
1957					}
1958				}
1959			};
1960			mDatabaseWriterExecutor.execute(runnable);
1961			this.accounts.remove(account);
1962			updateAccountUi();
1963			getNotificationService().updateErrorNotification();
1964			syncEnabledAccountSetting();
1965		}
1966	}
1967
1968	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1969		synchronized (this) {
1970			this.mLastActivity = System.currentTimeMillis();
1971			if (checkListeners()) {
1972				switchToForeground();
1973			}
1974			this.mOnConversationUpdate = listener;
1975			this.mNotificationService.setIsInForeground(true);
1976			if (this.convChangedListenerCount < 2) {
1977				this.convChangedListenerCount++;
1978			}
1979		}
1980	}
1981
1982	public void removeOnConversationListChangedListener() {
1983		synchronized (this) {
1984			this.convChangedListenerCount--;
1985			if (this.convChangedListenerCount <= 0) {
1986				this.convChangedListenerCount = 0;
1987				this.mOnConversationUpdate = null;
1988				this.mNotificationService.setIsInForeground(false);
1989				if (checkListeners()) {
1990					switchToBackground();
1991				}
1992			}
1993		}
1994	}
1995
1996	public void setOnShowErrorToastListener(OnShowErrorToast onShowErrorToast) {
1997		synchronized (this) {
1998			if (checkListeners()) {
1999				switchToForeground();
2000			}
2001			this.mOnShowErrorToast = onShowErrorToast;
2002			if (this.showErrorToastListenerCount < 2) {
2003				this.showErrorToastListenerCount++;
2004			}
2005		}
2006		this.mOnShowErrorToast = onShowErrorToast;
2007	}
2008
2009	public void removeOnShowErrorToastListener() {
2010		synchronized (this) {
2011			this.showErrorToastListenerCount--;
2012			if (this.showErrorToastListenerCount <= 0) {
2013				this.showErrorToastListenerCount = 0;
2014				this.mOnShowErrorToast = null;
2015				if (checkListeners()) {
2016					switchToBackground();
2017				}
2018			}
2019		}
2020	}
2021
2022	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
2023		synchronized (this) {
2024			if (checkListeners()) {
2025				switchToForeground();
2026			}
2027			this.mOnAccountUpdate = listener;
2028			if (this.accountChangedListenerCount < 2) {
2029				this.accountChangedListenerCount++;
2030			}
2031		}
2032	}
2033
2034	public void removeOnAccountListChangedListener() {
2035		synchronized (this) {
2036			this.accountChangedListenerCount--;
2037			if (this.accountChangedListenerCount <= 0) {
2038				this.mOnAccountUpdate = null;
2039				this.accountChangedListenerCount = 0;
2040				if (checkListeners()) {
2041					switchToBackground();
2042				}
2043			}
2044		}
2045	}
2046
2047	public void setOnCaptchaRequestedListener(OnCaptchaRequested listener) {
2048		synchronized (this) {
2049			if (checkListeners()) {
2050				switchToForeground();
2051			}
2052			this.mOnCaptchaRequested = listener;
2053			if (this.captchaRequestedListenerCount < 2) {
2054				this.captchaRequestedListenerCount++;
2055			}
2056		}
2057	}
2058
2059	public void removeOnCaptchaRequestedListener() {
2060		synchronized (this) {
2061			this.captchaRequestedListenerCount--;
2062			if (this.captchaRequestedListenerCount <= 0) {
2063				this.mOnCaptchaRequested = null;
2064				this.captchaRequestedListenerCount = 0;
2065				if (checkListeners()) {
2066					switchToBackground();
2067				}
2068			}
2069		}
2070	}
2071
2072	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
2073		synchronized (this) {
2074			if (checkListeners()) {
2075				switchToForeground();
2076			}
2077			this.mOnRosterUpdate = listener;
2078			if (this.rosterChangedListenerCount < 2) {
2079				this.rosterChangedListenerCount++;
2080			}
2081		}
2082	}
2083
2084	public void removeOnRosterUpdateListener() {
2085		synchronized (this) {
2086			this.rosterChangedListenerCount--;
2087			if (this.rosterChangedListenerCount <= 0) {
2088				this.rosterChangedListenerCount = 0;
2089				this.mOnRosterUpdate = null;
2090				if (checkListeners()) {
2091					switchToBackground();
2092				}
2093			}
2094		}
2095	}
2096
2097	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
2098		synchronized (this) {
2099			if (checkListeners()) {
2100				switchToForeground();
2101			}
2102			this.mOnUpdateBlocklist = listener;
2103			if (this.updateBlocklistListenerCount < 2) {
2104				this.updateBlocklistListenerCount++;
2105			}
2106		}
2107	}
2108
2109	public void removeOnUpdateBlocklistListener() {
2110		synchronized (this) {
2111			this.updateBlocklistListenerCount--;
2112			if (this.updateBlocklistListenerCount <= 0) {
2113				this.updateBlocklistListenerCount = 0;
2114				this.mOnUpdateBlocklist = null;
2115				if (checkListeners()) {
2116					switchToBackground();
2117				}
2118			}
2119		}
2120	}
2121
2122	public void setOnKeyStatusUpdatedListener(final OnKeyStatusUpdated listener) {
2123		synchronized (this) {
2124			if (checkListeners()) {
2125				switchToForeground();
2126			}
2127			this.mOnKeyStatusUpdated = listener;
2128			if (this.keyStatusUpdatedListenerCount < 2) {
2129				this.keyStatusUpdatedListenerCount++;
2130			}
2131		}
2132	}
2133
2134	public void removeOnNewKeysAvailableListener() {
2135		synchronized (this) {
2136			this.keyStatusUpdatedListenerCount--;
2137			if (this.keyStatusUpdatedListenerCount <= 0) {
2138				this.keyStatusUpdatedListenerCount = 0;
2139				this.mOnKeyStatusUpdated = null;
2140				if (checkListeners()) {
2141					switchToBackground();
2142				}
2143			}
2144		}
2145	}
2146
2147	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
2148		synchronized (this) {
2149			if (checkListeners()) {
2150				switchToForeground();
2151			}
2152			this.mOnMucRosterUpdate = listener;
2153			if (this.mucRosterChangedListenerCount < 2) {
2154				this.mucRosterChangedListenerCount++;
2155			}
2156		}
2157	}
2158
2159	public void removeOnMucRosterUpdateListener() {
2160		synchronized (this) {
2161			this.mucRosterChangedListenerCount--;
2162			if (this.mucRosterChangedListenerCount <= 0) {
2163				this.mucRosterChangedListenerCount = 0;
2164				this.mOnMucRosterUpdate = null;
2165				if (checkListeners()) {
2166					switchToBackground();
2167				}
2168			}
2169		}
2170	}
2171
2172	public boolean checkListeners() {
2173		return (this.mOnAccountUpdate == null
2174				&& this.mOnConversationUpdate == null
2175				&& this.mOnRosterUpdate == null
2176				&& this.mOnCaptchaRequested == null
2177				&& this.mOnUpdateBlocklist == null
2178				&& this.mOnShowErrorToast == null
2179				&& this.mOnKeyStatusUpdated == null);
2180	}
2181
2182	private void switchToForeground() {
2183		final boolean broadcastLastActivity = broadcastLastActivity();
2184		for (Conversation conversation : getConversations()) {
2185			if (conversation.getMode() == Conversation.MODE_MULTI) {
2186				conversation.getMucOptions().resetChatState();
2187			} else {
2188				conversation.setIncomingChatState(Config.DEFAULT_CHATSTATE);
2189			}
2190		}
2191		for (Account account : getAccounts()) {
2192			if (account.getStatus() == Account.State.ONLINE) {
2193				account.deactivateGracePeriod();
2194				final XmppConnection connection = account.getXmppConnection();
2195				if (connection != null) {
2196					if (connection.getFeatures().csi()) {
2197						connection.sendActive();
2198					}
2199					if (broadcastLastActivity) {
2200						sendPresence(account, false); //send new presence but don't include idle because we are not
2201					}
2202				}
2203			}
2204		}
2205		Log.d(Config.LOGTAG, "app switched into foreground");
2206	}
2207
2208	private void switchToBackground() {
2209		final boolean broadcastLastActivity = broadcastLastActivity();
2210		for (Account account : getAccounts()) {
2211			if (account.getStatus() == Account.State.ONLINE) {
2212				XmppConnection connection = account.getXmppConnection();
2213				if (connection != null) {
2214					if (broadcastLastActivity) {
2215						sendPresence(account, true);
2216					}
2217					if (connection.getFeatures().csi()) {
2218						connection.sendInactive();
2219					}
2220				}
2221			}
2222		}
2223		this.mNotificationService.setIsInForeground(false);
2224		Log.d(Config.LOGTAG, "app switched into background");
2225	}
2226
2227	private void connectMultiModeConversations(Account account) {
2228		List<Conversation> conversations = getConversations();
2229		for (Conversation conversation : conversations) {
2230			if (conversation.getMode() == Conversation.MODE_MULTI && conversation.getAccount() == account) {
2231				joinMuc(conversation);
2232			}
2233		}
2234	}
2235
2236	public void joinMuc(Conversation conversation) {
2237		joinMuc(conversation, null, false);
2238	}
2239
2240	public void joinMuc(Conversation conversation, boolean followedInvite) {
2241		joinMuc(conversation, null, followedInvite);
2242	}
2243
2244	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined) {
2245		joinMuc(conversation, onConferenceJoined, false);
2246	}
2247
2248	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined, final boolean followedInvite) {
2249		Account account = conversation.getAccount();
2250		account.pendingConferenceJoins.remove(conversation);
2251		account.pendingConferenceLeaves.remove(conversation);
2252		if (account.getStatus() == Account.State.ONLINE) {
2253			sendPresencePacket(account, mPresenceGenerator.leave(conversation.getMucOptions()));
2254			conversation.resetMucOptions();
2255			if (onConferenceJoined != null) {
2256				conversation.getMucOptions().flagNoAutoPushConfiguration();
2257			}
2258			conversation.setHasMessagesLeftOnServer(false);
2259			fetchConferenceConfiguration(conversation, new OnConferenceConfigurationFetched() {
2260
2261				private void join(Conversation conversation) {
2262					Account account = conversation.getAccount();
2263					final MucOptions mucOptions = conversation.getMucOptions();
2264					final Jid joinJid = mucOptions.getSelf().getFullJid();
2265					Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
2266					PresencePacket packet = mPresenceGenerator.selfPresence(account, Presence.Status.ONLINE, mucOptions.nonanonymous() || onConferenceJoined != null);
2267					packet.setTo(joinJid);
2268					Element x = packet.addChild("x", "http://jabber.org/protocol/muc");
2269					if (conversation.getMucOptions().getPassword() != null) {
2270						x.addChild("password").setContent(mucOptions.getPassword());
2271					}
2272
2273					if (mucOptions.mamSupport()) {
2274						// Use MAM instead of the limited muc history to get history
2275						x.addChild("history").setAttribute("maxchars", "0");
2276					} else {
2277						// Fallback to muc history
2278						x.addChild("history").setAttribute("since", PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted().getTimestamp()));
2279					}
2280					sendPresencePacket(account, packet);
2281					if (onConferenceJoined != null) {
2282						onConferenceJoined.onConferenceJoined(conversation);
2283					}
2284					if (!joinJid.equals(conversation.getJid())) {
2285						conversation.setContactJid(joinJid);
2286						databaseBackend.updateConversation(conversation);
2287					}
2288
2289					if (mucOptions.mamSupport()) {
2290						getMessageArchiveService().catchupMUC(conversation);
2291					}
2292					if (mucOptions.isPrivateAndNonAnonymous()) {
2293						fetchConferenceMembers(conversation);
2294						if (followedInvite && conversation.getBookmark() == null) {
2295							saveConversationAsBookmark(conversation, null);
2296						}
2297					}
2298					sendUnsentMessages(conversation);
2299				}
2300
2301				@Override
2302				public void onConferenceConfigurationFetched(Conversation conversation) {
2303					join(conversation);
2304				}
2305
2306				@Override
2307				public void onFetchFailed(final Conversation conversation, Element error) {
2308					if (error != null && "remote-server-not-found".equals(error.getName())) {
2309						conversation.getMucOptions().setError(MucOptions.Error.SERVER_NOT_FOUND);
2310						updateConversationUi();
2311					} else {
2312						join(conversation);
2313						fetchConferenceConfiguration(conversation);
2314					}
2315				}
2316			});
2317			updateConversationUi();
2318		} else {
2319			account.pendingConferenceJoins.add(conversation);
2320			conversation.resetMucOptions();
2321			conversation.setHasMessagesLeftOnServer(false);
2322			updateConversationUi();
2323		}
2324	}
2325
2326	private void fetchConferenceMembers(final Conversation conversation) {
2327		final Account account = conversation.getAccount();
2328		final AxolotlService axolotlService = account.getAxolotlService();
2329		final String[] affiliations = {"member", "admin", "owner"};
2330		OnIqPacketReceived callback = new OnIqPacketReceived() {
2331
2332			private int i = 0;
2333			private boolean success = true;
2334
2335			@Override
2336			public void onIqPacketReceived(Account account, IqPacket packet) {
2337
2338				Element query = packet.query("http://jabber.org/protocol/muc#admin");
2339				if (packet.getType() == IqPacket.TYPE.RESULT && query != null) {
2340					for (Element child : query.getChildren()) {
2341						if ("item".equals(child.getName())) {
2342							MucOptions.User user = AbstractParser.parseItem(conversation, child);
2343							if (!user.realJidMatchesAccount()) {
2344								boolean isNew = conversation.getMucOptions().updateUser(user);
2345								if (isNew && user.getRealJid() != null && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
2346									axolotlService.fetchDeviceIds(user.getRealJid());
2347								}
2348							}
2349						}
2350					}
2351				} else {
2352					success = false;
2353					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not request affiliation " + affiliations[i] + " in " + conversation.getJid().toBareJid());
2354				}
2355				++i;
2356				if (i >= affiliations.length) {
2357					List<Jid> members = conversation.getMucOptions().getMembers();
2358					if (success) {
2359						List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
2360						boolean changed = false;
2361						for (ListIterator<Jid> iterator = cryptoTargets.listIterator(); iterator.hasNext(); ) {
2362							Jid jid = iterator.next();
2363							if (!members.contains(jid)) {
2364								iterator.remove();
2365								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
2366								changed = true;
2367							}
2368						}
2369						if (changed) {
2370							conversation.setAcceptedCryptoTargets(cryptoTargets);
2371							updateConversation(conversation);
2372						}
2373					}
2374					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": retrieved members for " + conversation.getJid().toBareJid() + ": " + conversation.getMucOptions().getMembers());
2375					getAvatarService().clear(conversation);
2376					updateMucRosterUi();
2377					updateConversationUi();
2378				}
2379			}
2380		};
2381		for (String affiliation : affiliations) {
2382			sendIqPacket(account, mIqGenerator.queryAffiliation(conversation, affiliation), callback);
2383		}
2384		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching members for " + conversation.getName());
2385	}
2386
2387	public void providePasswordForMuc(Conversation conversation, String password) {
2388		if (conversation.getMode() == Conversation.MODE_MULTI) {
2389			conversation.getMucOptions().setPassword(password);
2390			if (conversation.getBookmark() != null) {
2391				if (respectAutojoin()) {
2392					conversation.getBookmark().setAutojoin(true);
2393				}
2394				pushBookmarks(conversation.getAccount());
2395			}
2396			updateConversation(conversation);
2397			joinMuc(conversation);
2398		}
2399	}
2400
2401	private boolean hasEnabledAccounts() {
2402		for (Account account : this.accounts) {
2403			if (account.isEnabled()) {
2404				return true;
2405			}
2406		}
2407		return false;
2408	}
2409
2410	public boolean renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
2411		final MucOptions options = conversation.getMucOptions();
2412		final Jid joinJid = options.createJoinJid(nick);
2413		if (joinJid == null) {
2414			return false;
2415		}
2416		if (options.online()) {
2417			Account account = conversation.getAccount();
2418			options.setOnRenameListener(new OnRenameListener() {
2419
2420				@Override
2421				public void onSuccess() {
2422					conversation.setContactJid(joinJid);
2423					databaseBackend.updateConversation(conversation);
2424					Bookmark bookmark = conversation.getBookmark();
2425					if (bookmark != null) {
2426						bookmark.setNick(nick);
2427						pushBookmarks(bookmark.getAccount());
2428					}
2429					callback.success(conversation);
2430				}
2431
2432				@Override
2433				public void onFailure() {
2434					callback.error(R.string.nick_in_use, conversation);
2435				}
2436			});
2437
2438			PresencePacket packet = new PresencePacket();
2439			packet.setTo(joinJid);
2440			packet.setFrom(conversation.getAccount().getJid());
2441
2442			String sig = account.getPgpSignature();
2443			if (sig != null) {
2444				packet.addChild("status").setContent("online");
2445				packet.addChild("x", "jabber:x:signed").setContent(sig);
2446			}
2447			sendPresencePacket(account, packet);
2448		} else {
2449			conversation.setContactJid(joinJid);
2450			databaseBackend.updateConversation(conversation);
2451			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
2452				Bookmark bookmark = conversation.getBookmark();
2453				if (bookmark != null) {
2454					bookmark.setNick(nick);
2455					pushBookmarks(bookmark.getAccount());
2456				}
2457				joinMuc(conversation);
2458			}
2459		}
2460		return true;
2461	}
2462
2463	public void leaveMuc(Conversation conversation) {
2464		leaveMuc(conversation, false);
2465	}
2466
2467	private void leaveMuc(Conversation conversation, boolean now) {
2468		Account account = conversation.getAccount();
2469		account.pendingConferenceJoins.remove(conversation);
2470		account.pendingConferenceLeaves.remove(conversation);
2471		if (account.getStatus() == Account.State.ONLINE || now) {
2472			sendPresencePacket(conversation.getAccount(), mPresenceGenerator.leave(conversation.getMucOptions()));
2473			conversation.getMucOptions().setOffline();
2474			conversation.deregisterWithBookmark();
2475			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": leaving muc " + conversation.getJid());
2476		} else {
2477			account.pendingConferenceLeaves.add(conversation);
2478		}
2479	}
2480
2481	public String findConferenceServer(final Account account) {
2482		String server;
2483		if (account.getXmppConnection() != null) {
2484			server = account.getXmppConnection().getMucServer();
2485			if (server != null) {
2486				return server;
2487			}
2488		}
2489		for (Account other : getAccounts()) {
2490			if (other != account && other.getXmppConnection() != null) {
2491				server = other.getXmppConnection().getMucServer();
2492				if (server != null) {
2493					return server;
2494				}
2495			}
2496		}
2497		return null;
2498	}
2499
2500	public boolean createAdhocConference(final Account account,
2501	                                     final String subject,
2502	                                     final Iterable<Jid> jids,
2503	                                     final UiCallback<Conversation> callback) {
2504		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
2505		if (account.getStatus() == Account.State.ONLINE) {
2506			try {
2507				String server = findConferenceServer(account);
2508				if (server == null) {
2509					if (callback != null) {
2510						callback.error(R.string.no_conference_server_found, null);
2511					}
2512					return false;
2513				}
2514				final Jid jid = Jid.fromParts(new BigInteger(64, getRNG()).toString(Character.MAX_RADIX), server, null);
2515				final Conversation conversation = findOrCreateConversation(account, jid, true, false, true);
2516				joinMuc(conversation, new OnConferenceJoined() {
2517					@Override
2518					public void onConferenceJoined(final Conversation conversation) {
2519						pushConferenceConfiguration(conversation, IqGenerator.defaultRoomConfiguration(), new OnConfigurationPushed() {
2520							@Override
2521							public void onPushSucceeded() {
2522								if (subject != null && !subject.trim().isEmpty()) {
2523									pushSubjectToConference(conversation, subject.trim());
2524								}
2525								for (Jid invite : jids) {
2526									invite(conversation, invite);
2527								}
2528								if (account.countPresences() > 1) {
2529									directInvite(conversation, account.getJid().toBareJid());
2530								}
2531								saveConversationAsBookmark(conversation, subject);
2532								if (callback != null) {
2533									callback.success(conversation);
2534								}
2535							}
2536
2537							@Override
2538							public void onPushFailed() {
2539								archiveConversation(conversation);
2540								if (callback != null) {
2541									callback.error(R.string.conference_creation_failed, conversation);
2542								}
2543							}
2544						});
2545					}
2546				});
2547				return true;
2548			} catch (InvalidJidException e) {
2549				if (callback != null) {
2550					callback.error(R.string.conference_creation_failed, null);
2551				}
2552				return false;
2553			}
2554		} else {
2555			if (callback != null) {
2556				callback.error(R.string.not_connected_try_again, null);
2557			}
2558			return false;
2559		}
2560	}
2561
2562	public void fetchConferenceConfiguration(final Conversation conversation) {
2563		fetchConferenceConfiguration(conversation, null);
2564	}
2565
2566	public void fetchConferenceConfiguration(final Conversation conversation, final OnConferenceConfigurationFetched callback) {
2567		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2568		request.setTo(conversation.getJid().toBareJid());
2569		request.query("http://jabber.org/protocol/disco#info");
2570		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2571			@Override
2572			public void onIqPacketReceived(Account account, IqPacket packet) {
2573				Element query = packet.findChild("query", "http://jabber.org/protocol/disco#info");
2574				if (packet.getType() == IqPacket.TYPE.RESULT && query != null) {
2575					ArrayList<String> features = new ArrayList<>();
2576					for (Element child : query.getChildren()) {
2577						if (child != null && child.getName().equals("feature")) {
2578							String var = child.getAttribute("var");
2579							if (var != null) {
2580								features.add(var);
2581							}
2582						}
2583					}
2584					Element form = query.findChild("x", "jabber:x:data");
2585					if (form != null) {
2586						conversation.getMucOptions().updateFormData(Data.parse(form));
2587					}
2588					conversation.getMucOptions().updateFeatures(features);
2589					if (callback != null) {
2590						callback.onConferenceConfigurationFetched(conversation);
2591					}
2592					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetched muc configuration for " + conversation.getJid().toBareJid() + " - " + features.toString());
2593					updateConversationUi();
2594				} else if (packet.getType() == IqPacket.TYPE.ERROR) {
2595					if (callback != null) {
2596						callback.onFetchFailed(conversation, packet.getError());
2597					}
2598				}
2599			}
2600		});
2601	}
2602
2603	public void pushNodeConfiguration(Account account, final String node, final Bundle options, final OnConfigurationPushed callback) {
2604		pushNodeConfiguration(account, account.getJid().toBareJid(), node, options, callback);
2605	}
2606
2607	public void pushNodeConfiguration(Account account, final Jid jid, final String node, final Bundle options, final OnConfigurationPushed callback) {
2608		sendIqPacket(account, mIqGenerator.requestPubsubConfiguration(jid, node), new OnIqPacketReceived() {
2609			@Override
2610			public void onIqPacketReceived(Account account, IqPacket packet) {
2611				if (packet.getType() == IqPacket.TYPE.RESULT) {
2612					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub#owner");
2613					Element configuration = pubsub == null ? null : pubsub.findChild("configure");
2614					Element x = configuration == null ? null : configuration.findChild("x", "jabber:x:data");
2615					if (x != null) {
2616						Data data = Data.parse(x);
2617						data.submit(options);
2618						sendIqPacket(account, mIqGenerator.publishPubsubConfiguration(jid, node, data), new OnIqPacketReceived() {
2619							@Override
2620							public void onIqPacketReceived(Account account, IqPacket packet) {
2621								if (packet.getType() == IqPacket.TYPE.RESULT && callback != null) {
2622									callback.onPushSucceeded();
2623								} else {
2624									Log.d(Config.LOGTAG, packet.toString());
2625								}
2626							}
2627						});
2628					} else if (callback != null) {
2629						callback.onPushFailed();
2630					}
2631				} else if (callback != null) {
2632					callback.onPushFailed();
2633				}
2634			}
2635		});
2636	}
2637
2638	public void pushConferenceConfiguration(final Conversation conversation, final Bundle options, final OnConfigurationPushed callback) {
2639		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2640		request.setTo(conversation.getJid().toBareJid());
2641		request.query("http://jabber.org/protocol/muc#owner");
2642		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
2643			@Override
2644			public void onIqPacketReceived(Account account, IqPacket packet) {
2645				if (packet.getType() == IqPacket.TYPE.RESULT) {
2646					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
2647					data.submit(options);
2648					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
2649					set.setTo(conversation.getJid().toBareJid());
2650					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
2651					sendIqPacket(account, set, new OnIqPacketReceived() {
2652						@Override
2653						public void onIqPacketReceived(Account account, IqPacket packet) {
2654							if (callback != null) {
2655								if (packet.getType() == IqPacket.TYPE.RESULT) {
2656									callback.onPushSucceeded();
2657								} else {
2658									callback.onPushFailed();
2659								}
2660							}
2661						}
2662					});
2663				} else {
2664					if (callback != null) {
2665						callback.onPushFailed();
2666					}
2667				}
2668			}
2669		});
2670	}
2671
2672	public void pushSubjectToConference(final Conversation conference, final String subject) {
2673		MessagePacket packet = this.getMessageGenerator().conferenceSubject(conference, subject);
2674		this.sendMessagePacket(conference.getAccount(), packet);
2675		final MucOptions mucOptions = conference.getMucOptions();
2676		final MucOptions.User self = mucOptions.getSelf();
2677		if (self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
2678			Bundle options = new Bundle();
2679			options.putString("muc#roomconfig_persistentroom", "1");
2680			options.putString("muc#roomconfig_roomname", subject);
2681			this.pushConferenceConfiguration(conference, options, null);
2682		}
2683	}
2684
2685	public void changeAffiliationInConference(final Conversation conference, Jid user, final MucOptions.Affiliation affiliation, final OnAffiliationChanged callback) {
2686		final Jid jid = user.toBareJid();
2687		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jid, affiliation.toString());
2688		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
2689			@Override
2690			public void onIqPacketReceived(Account account, IqPacket packet) {
2691				if (packet.getType() == IqPacket.TYPE.RESULT) {
2692					conference.getMucOptions().changeAffiliation(jid, affiliation);
2693					getAvatarService().clear(conference);
2694					callback.onAffiliationChangedSuccessful(jid);
2695				} else {
2696					callback.onAffiliationChangeFailed(jid, R.string.could_not_change_affiliation);
2697				}
2698			}
2699		});
2700	}
2701
2702	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
2703		List<Jid> jids = new ArrayList<>();
2704		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
2705			if (user.getAffiliation() == before && user.getRealJid() != null) {
2706				jids.add(user.getRealJid());
2707			}
2708		}
2709		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jids, after.toString());
2710		sendIqPacket(conference.getAccount(), request, mDefaultIqHandler);
2711	}
2712
2713	public void changeRoleInConference(final Conversation conference, final String nick, MucOptions.Role role, final OnRoleChanged callback) {
2714		IqPacket request = this.mIqGenerator.changeRole(conference, nick, role.toString());
2715		Log.d(Config.LOGTAG, request.toString());
2716		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
2717			@Override
2718			public void onIqPacketReceived(Account account, IqPacket packet) {
2719				Log.d(Config.LOGTAG, packet.toString());
2720				if (packet.getType() == IqPacket.TYPE.RESULT) {
2721					callback.onRoleChangedSuccessful(nick);
2722				} else {
2723					callback.onRoleChangeFailed(nick, R.string.could_not_change_role);
2724				}
2725			}
2726		});
2727	}
2728
2729	private void disconnect(Account account, boolean force) {
2730		if ((account.getStatus() == Account.State.ONLINE)
2731				|| (account.getStatus() == Account.State.DISABLED)) {
2732			final XmppConnection connection = account.getXmppConnection();
2733			if (!force) {
2734				List<Conversation> conversations = getConversations();
2735				for (Conversation conversation : conversations) {
2736					if (conversation.getAccount() == account) {
2737						if (conversation.getMode() == Conversation.MODE_MULTI) {
2738							leaveMuc(conversation, true);
2739						} else {
2740							if (conversation.endOtrIfNeeded()) {
2741								Log.d(Config.LOGTAG, account.getJid().toBareJid()
2742										+ ": ended otr session with "
2743										+ conversation.getJid());
2744							}
2745						}
2746					}
2747				}
2748				sendOfflinePresence(account);
2749			}
2750			connection.disconnect(force);
2751		}
2752	}
2753
2754	@Override
2755	public IBinder onBind(Intent intent) {
2756		return mBinder;
2757	}
2758
2759	public void updateMessage(Message message) {
2760		databaseBackend.updateMessage(message);
2761		updateConversationUi();
2762	}
2763
2764	public void updateMessage(Message message, String uuid) {
2765		databaseBackend.updateMessage(message, uuid);
2766		updateConversationUi();
2767	}
2768
2769	protected void syncDirtyContacts(Account account) {
2770		for (Contact contact : account.getRoster().getContacts()) {
2771			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
2772				pushContactToServer(contact);
2773			}
2774			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
2775				deleteContactOnServer(contact);
2776			}
2777		}
2778	}
2779
2780	public void createContact(Contact contact) {
2781		boolean autoGrant = getBooleanPreference("grant_new_contacts", R.bool.grant_new_contacts);
2782		if (autoGrant) {
2783			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
2784			contact.setOption(Contact.Options.ASKING);
2785		}
2786		pushContactToServer(contact);
2787	}
2788
2789	public void onOtrSessionEstablished(Conversation conversation) {
2790		final Account account = conversation.getAccount();
2791		final Session otrSession = conversation.getOtrSession();
2792		Log.d(Config.LOGTAG,
2793				account.getJid().toBareJid() + " otr session established with "
2794						+ conversation.getJid() + "/"
2795						+ otrSession.getSessionID().getUserID());
2796		conversation.findUnsentMessagesWithEncryption(Message.ENCRYPTION_OTR, new Conversation.OnMessageFound() {
2797
2798			@Override
2799			public void onMessageFound(Message message) {
2800				SessionID id = otrSession.getSessionID();
2801				try {
2802					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
2803				} catch (InvalidJidException e) {
2804					return;
2805				}
2806				if (message.needsUploading()) {
2807					mJingleConnectionManager.createNewConnection(message);
2808				} else {
2809					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message);
2810					if (outPacket != null) {
2811						mMessageGenerator.addDelay(outPacket, message.getTimeSent());
2812						message.setStatus(Message.STATUS_SEND);
2813						databaseBackend.updateMessage(message);
2814						sendMessagePacket(account, outPacket);
2815					}
2816				}
2817				updateConversationUi();
2818			}
2819		});
2820	}
2821
2822	public boolean renewSymmetricKey(Conversation conversation) {
2823		Account account = conversation.getAccount();
2824		byte[] symmetricKey = new byte[32];
2825		this.mRandom.nextBytes(symmetricKey);
2826		Session otrSession = conversation.getOtrSession();
2827		if (otrSession != null) {
2828			MessagePacket packet = new MessagePacket();
2829			packet.setType(MessagePacket.TYPE_CHAT);
2830			packet.setFrom(account.getJid());
2831			MessageGenerator.addMessageHints(packet);
2832			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
2833					+ otrSession.getSessionID().getUserID());
2834			try {
2835				packet.setBody(otrSession
2836						.transformSending(CryptoHelper.FILETRANSFER
2837								+ CryptoHelper.bytesToHex(symmetricKey))[0]);
2838				sendMessagePacket(account, packet);
2839				conversation.setSymmetricKey(symmetricKey);
2840				return true;
2841			} catch (OtrException e) {
2842				return false;
2843			}
2844		}
2845		return false;
2846	}
2847
2848	public void pushContactToServer(final Contact contact) {
2849		contact.resetOption(Contact.Options.DIRTY_DELETE);
2850		contact.setOption(Contact.Options.DIRTY_PUSH);
2851		final Account account = contact.getAccount();
2852		if (account.getStatus() == Account.State.ONLINE) {
2853			final boolean ask = contact.getOption(Contact.Options.ASKING);
2854			final boolean sendUpdates = contact
2855					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
2856					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
2857			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2858			iq.query(Namespace.ROSTER).addChild(contact.asElement());
2859			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
2860			if (sendUpdates) {
2861				sendPresencePacket(account,
2862						mPresenceGenerator.sendPresenceUpdatesTo(contact));
2863			}
2864			if (ask) {
2865				sendPresencePacket(account,
2866						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
2867			}
2868		}
2869	}
2870
2871	public void publishAvatar(final Account account, final Uri image, final UiCallback<Avatar> callback) {
2872		new Thread(() -> {
2873			final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
2874			final int size = Config.AVATAR_SIZE;
2875			final Avatar avatar = getFileBackend().getPepAvatar(image, size, format);
2876			if (avatar != null) {
2877				if (!getFileBackend().save(avatar)) {
2878					callback.error(R.string.error_saving_avatar, avatar);
2879					return;
2880				}
2881				publishAvatar(account, avatar, callback);
2882			} else {
2883				callback.error(R.string.error_publish_avatar_converting, null);
2884			}
2885		}).start();
2886
2887	}
2888
2889	public void publishAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2890		IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
2891		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2892
2893			@Override
2894			public void onIqPacketReceived(Account account, IqPacket result) {
2895				if (result.getType() == IqPacket.TYPE.RESULT) {
2896					final IqPacket packet = XmppConnectionService.this.mIqGenerator.publishAvatarMetadata(avatar);
2897					sendIqPacket(account, packet, new OnIqPacketReceived() {
2898						@Override
2899						public void onIqPacketReceived(Account account, IqPacket result) {
2900							if (result.getType() == IqPacket.TYPE.RESULT) {
2901								if (account.setAvatar(avatar.getFilename())) {
2902									getAvatarService().clear(account);
2903									databaseBackend.updateAccount(account);
2904								}
2905								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": published avatar " + (avatar.size / 1024) + "KiB");
2906								if (callback != null) {
2907									callback.success(avatar);
2908								}
2909							} else {
2910								if (callback != null) {
2911									callback.error(R.string.error_publish_avatar_server_reject, avatar);
2912								}
2913							}
2914						}
2915					});
2916				} else {
2917					Element error = result.findChild("error");
2918					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server rejected avatar " + (avatar.size / 1024) + "KiB " + (error != null ? error.toString() : ""));
2919					if (callback != null) {
2920						callback.error(R.string.error_publish_avatar_server_reject, avatar);
2921					}
2922				}
2923			}
2924		});
2925	}
2926
2927	public void republishAvatarIfNeeded(Account account) {
2928		if (account.getAxolotlService().isPepBroken()) {
2929			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": skipping republication of avatar because pep is broken");
2930			return;
2931		}
2932		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
2933		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2934
2935			private Avatar parseAvatar(IqPacket packet) {
2936				Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
2937				if (pubsub != null) {
2938					Element items = pubsub.findChild("items");
2939					if (items != null) {
2940						return Avatar.parseMetadata(items);
2941					}
2942				}
2943				return null;
2944			}
2945
2946			private boolean errorIsItemNotFound(IqPacket packet) {
2947				Element error = packet.findChild("error");
2948				return packet.getType() == IqPacket.TYPE.ERROR
2949						&& error != null
2950						&& error.hasChild("item-not-found");
2951			}
2952
2953			@Override
2954			public void onIqPacketReceived(Account account, IqPacket packet) {
2955				if (packet.getType() == IqPacket.TYPE.RESULT || errorIsItemNotFound(packet)) {
2956					Avatar serverAvatar = parseAvatar(packet);
2957					if (serverAvatar == null && account.getAvatar() != null) {
2958						Avatar avatar = fileBackend.getStoredPepAvatar(account.getAvatar());
2959						if (avatar != null) {
2960							Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": avatar on server was null. republishing");
2961							publishAvatar(account, fileBackend.getStoredPepAvatar(account.getAvatar()), null);
2962						} else {
2963							Log.e(Config.LOGTAG, account.getJid().toBareJid() + ": error rereading avatar");
2964						}
2965					}
2966				}
2967			}
2968		});
2969	}
2970
2971	public void fetchAvatar(Account account, Avatar avatar) {
2972		fetchAvatar(account, avatar, null);
2973	}
2974
2975	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2976		final String KEY = generateFetchKey(account, avatar);
2977		synchronized (this.mInProgressAvatarFetches) {
2978			if (!this.mInProgressAvatarFetches.contains(KEY)) {
2979				switch (avatar.origin) {
2980					case PEP:
2981						this.mInProgressAvatarFetches.add(KEY);
2982						fetchAvatarPep(account, avatar, callback);
2983						break;
2984					case VCARD:
2985						this.mInProgressAvatarFetches.add(KEY);
2986						fetchAvatarVcard(account, avatar, callback);
2987						break;
2988				}
2989			}
2990		}
2991	}
2992
2993	private void fetchAvatarPep(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2994		IqPacket packet = this.mIqGenerator.retrievePepAvatar(avatar);
2995		sendIqPacket(account, packet, new OnIqPacketReceived() {
2996
2997			@Override
2998			public void onIqPacketReceived(Account account, IqPacket result) {
2999				synchronized (mInProgressAvatarFetches) {
3000					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
3001				}
3002				final String ERROR = account.getJid().toBareJid()
3003						+ ": fetching avatar for " + avatar.owner + " failed ";
3004				if (result.getType() == IqPacket.TYPE.RESULT) {
3005					avatar.image = mIqParser.avatarData(result);
3006					if (avatar.image != null) {
3007						if (getFileBackend().save(avatar)) {
3008							if (account.getJid().toBareJid().equals(avatar.owner)) {
3009								if (account.setAvatar(avatar.getFilename())) {
3010									databaseBackend.updateAccount(account);
3011								}
3012								getAvatarService().clear(account);
3013								updateConversationUi();
3014								updateAccountUi();
3015							} else {
3016								Contact contact = account.getRoster()
3017										.getContact(avatar.owner);
3018								contact.setAvatar(avatar);
3019								getAvatarService().clear(contact);
3020								updateConversationUi();
3021								updateRosterUi();
3022							}
3023							if (callback != null) {
3024								callback.success(avatar);
3025							}
3026							Log.d(Config.LOGTAG, account.getJid().toBareJid()
3027									+ ": successfully fetched pep avatar for " + avatar.owner);
3028							return;
3029						}
3030					} else {
3031
3032						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
3033					}
3034				} else {
3035					Element error = result.findChild("error");
3036					if (error == null) {
3037						Log.d(Config.LOGTAG, ERROR + "(server error)");
3038					} else {
3039						Log.d(Config.LOGTAG, ERROR + error.toString());
3040					}
3041				}
3042				if (callback != null) {
3043					callback.error(0, null);
3044				}
3045
3046			}
3047		});
3048	}
3049
3050	private void fetchAvatarVcard(final Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
3051		IqPacket packet = this.mIqGenerator.retrieveVcardAvatar(avatar);
3052		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3053			@Override
3054			public void onIqPacketReceived(Account account, IqPacket packet) {
3055				synchronized (mInProgressAvatarFetches) {
3056					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
3057				}
3058				if (packet.getType() == IqPacket.TYPE.RESULT) {
3059					Element vCard = packet.findChild("vCard", "vcard-temp");
3060					Element photo = vCard != null ? vCard.findChild("PHOTO") : null;
3061					String image = photo != null ? photo.findChildContent("BINVAL") : null;
3062					if (image != null) {
3063						avatar.image = image;
3064						if (getFileBackend().save(avatar)) {
3065							Log.d(Config.LOGTAG, account.getJid().toBareJid()
3066									+ ": successfully fetched vCard avatar for " + avatar.owner);
3067							if (avatar.owner.isBareJid()) {
3068								if (account.getJid().toBareJid().equals(avatar.owner) && account.getAvatar() == null) {
3069									Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": had no avatar. replacing with vcard");
3070									account.setAvatar(avatar.getFilename());
3071									databaseBackend.updateAccount(account);
3072									getAvatarService().clear(account);
3073									updateAccountUi();
3074								} else {
3075									Contact contact = account.getRoster().getContact(avatar.owner);
3076									contact.setAvatar(avatar);
3077									getAvatarService().clear(contact);
3078									updateRosterUi();
3079								}
3080								updateConversationUi();
3081							} else {
3082								Conversation conversation = find(account, avatar.owner.toBareJid());
3083								if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
3084									MucOptions.User user = conversation.getMucOptions().findUserByFullJid(avatar.owner);
3085									if (user != null) {
3086										if (user.setAvatar(avatar)) {
3087											getAvatarService().clear(user);
3088											updateConversationUi();
3089											updateMucRosterUi();
3090										}
3091									}
3092								}
3093							}
3094						}
3095					}
3096				}
3097			}
3098		});
3099	}
3100
3101	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
3102		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
3103		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
3104
3105			@Override
3106			public void onIqPacketReceived(Account account, IqPacket packet) {
3107				if (packet.getType() == IqPacket.TYPE.RESULT) {
3108					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
3109					if (pubsub != null) {
3110						Element items = pubsub.findChild("items");
3111						if (items != null) {
3112							Avatar avatar = Avatar.parseMetadata(items);
3113							if (avatar != null) {
3114								avatar.owner = account.getJid().toBareJid();
3115								if (fileBackend.isAvatarCached(avatar)) {
3116									if (account.setAvatar(avatar.getFilename())) {
3117										databaseBackend.updateAccount(account);
3118									}
3119									getAvatarService().clear(account);
3120									callback.success(avatar);
3121								} else {
3122									fetchAvatarPep(account, avatar, callback);
3123								}
3124								return;
3125							}
3126						}
3127					}
3128				}
3129				callback.error(0, null);
3130			}
3131		});
3132	}
3133
3134	public void deleteContactOnServer(Contact contact) {
3135		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
3136		contact.resetOption(Contact.Options.DIRTY_PUSH);
3137		contact.setOption(Contact.Options.DIRTY_DELETE);
3138		Account account = contact.getAccount();
3139		if (account.getStatus() == Account.State.ONLINE) {
3140			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
3141			Element item = iq.query(Namespace.ROSTER).addChild("item");
3142			item.setAttribute("jid", contact.getJid().toString());
3143			item.setAttribute("subscription", "remove");
3144			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
3145		}
3146	}
3147
3148	public void updateConversation(final Conversation conversation) {
3149		mDatabaseWriterExecutor.execute(new Runnable() {
3150			@Override
3151			public void run() {
3152				databaseBackend.updateConversation(conversation);
3153			}
3154		});
3155	}
3156
3157	private void reconnectAccount(final Account account, final boolean force, final boolean interactive) {
3158		synchronized (account) {
3159			XmppConnection connection = account.getXmppConnection();
3160			if (connection == null) {
3161				connection = createConnection(account);
3162				account.setXmppConnection(connection);
3163			}
3164			boolean hasInternet = hasInternetConnection();
3165			if (account.isEnabled() && hasInternet) {
3166				if (!force) {
3167					disconnect(account, false);
3168				}
3169				Thread thread = new Thread(connection);
3170				connection.setInteractive(interactive);
3171				connection.prepareNewConnection();
3172				connection.interrupt();
3173				thread.start();
3174				scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
3175			} else {
3176				disconnect(account, force || account.getTrueStatus().isError() || !hasInternet);
3177				account.getRoster().clearPresences();
3178				connection.resetEverything();
3179				final AxolotlService axolotlService = account.getAxolotlService();
3180				if (axolotlService != null) {
3181					axolotlService.resetBrokenness();
3182				}
3183				if (!hasInternet) {
3184					account.setStatus(Account.State.NO_INTERNET);
3185				}
3186			}
3187		}
3188	}
3189
3190	public void reconnectAccountInBackground(final Account account) {
3191		new Thread(new Runnable() {
3192			@Override
3193			public void run() {
3194				reconnectAccount(account, false, true);
3195			}
3196		}).start();
3197	}
3198
3199	public void invite(Conversation conversation, Jid contact) {
3200		Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": inviting " + contact + " to " + conversation.getJid().toBareJid());
3201		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
3202		sendMessagePacket(conversation.getAccount(), packet);
3203	}
3204
3205	public void directInvite(Conversation conversation, Jid jid) {
3206		MessagePacket packet = mMessageGenerator.directInvite(conversation, jid);
3207		sendMessagePacket(conversation.getAccount(), packet);
3208	}
3209
3210	public void resetSendingToWaiting(Account account) {
3211		for (Conversation conversation : getConversations()) {
3212			if (conversation.getAccount() == account) {
3213				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
3214
3215					@Override
3216					public void onMessageFound(Message message) {
3217						markMessage(message, Message.STATUS_WAITING);
3218					}
3219				});
3220			}
3221		}
3222	}
3223
3224	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status) {
3225		return markMessage(account, recipient, uuid, status, null);
3226	}
3227
3228	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status, String errorMessage) {
3229		if (uuid == null) {
3230			return null;
3231		}
3232		for (Conversation conversation : getConversations()) {
3233			if (conversation.getJid().toBareJid().equals(recipient) && conversation.getAccount() == account) {
3234				final Message message = conversation.findSentMessageWithUuidOrRemoteId(uuid);
3235				if (message != null) {
3236					markMessage(message, status, errorMessage);
3237				}
3238				return message;
3239			}
3240		}
3241		return null;
3242	}
3243
3244	public boolean markMessage(Conversation conversation, String uuid, int status, String serverMessageId) {
3245		if (uuid == null) {
3246			return false;
3247		} else {
3248			Message message = conversation.findSentMessageWithUuid(uuid);
3249			if (message != null) {
3250				if (message.getServerMsgId() == null) {
3251					message.setServerMsgId(serverMessageId);
3252				}
3253				markMessage(message, status);
3254				return true;
3255			} else {
3256				return false;
3257			}
3258		}
3259	}
3260
3261	public void markMessage(Message message, int status) {
3262		markMessage(message, status, null);
3263	}
3264
3265
3266	public void markMessage(Message message, int status, String errorMessage) {
3267		if (status == Message.STATUS_SEND_FAILED
3268				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
3269				.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
3270			return;
3271		}
3272		message.setErrorMessage(errorMessage);
3273		message.setStatus(status);
3274		databaseBackend.updateMessage(message);
3275		updateConversationUi();
3276	}
3277
3278	private SharedPreferences getPreferences() {
3279		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
3280	}
3281
3282	public long getAutomaticMessageDeletionDate() {
3283		final long timeout = getLongPreference(SettingsActivity.AUTOMATIC_MESSAGE_DELETION, R.integer.automatic_message_deletion);
3284		return timeout == 0 ? timeout : (System.currentTimeMillis() - (timeout * 1000));
3285	}
3286
3287	public long getLongPreference(String name, @IntegerRes int res) {
3288		long defaultValue = getResources().getInteger(res);
3289		try {
3290			return Long.parseLong(getPreferences().getString(name, String.valueOf(defaultValue)));
3291		} catch (NumberFormatException e) {
3292			return defaultValue;
3293		}
3294	}
3295
3296	public boolean getBooleanPreference(String name, @BoolRes int res) {
3297		return getPreferences().getBoolean(name, getResources().getBoolean(res));
3298	}
3299
3300	public boolean confirmMessages() {
3301		return getBooleanPreference("confirm_messages", R.bool.confirm_messages);
3302	}
3303
3304	public boolean allowMessageCorrection() {
3305		return getBooleanPreference("allow_message_correction", R.bool.allow_message_correction);
3306	}
3307
3308	public boolean sendChatStates() {
3309		return getBooleanPreference("chat_states", R.bool.chat_states);
3310	}
3311
3312	private boolean respectAutojoin() {
3313		return getBooleanPreference("autojoin", R.bool.autojoin);
3314	}
3315
3316	public boolean indicateReceived() {
3317		return getBooleanPreference("indicate_received", R.bool.indicate_received);
3318	}
3319
3320	public boolean useTorToConnect() {
3321		return Config.FORCE_ORBOT || getBooleanPreference("use_tor", R.bool.use_tor);
3322	}
3323
3324	public boolean showExtendedConnectionOptions() {
3325		return getBooleanPreference("show_connection_options", R.bool.show_connection_options);
3326	}
3327
3328	public boolean broadcastLastActivity() {
3329		return getBooleanPreference(SettingsActivity.BROADCAST_LAST_ACTIVITY, R.bool.last_activity);
3330	}
3331
3332	public int unreadCount() {
3333		int count = 0;
3334		for (Conversation conversation : getConversations()) {
3335			count += conversation.unreadCount();
3336		}
3337		return count;
3338	}
3339
3340
3341	public void showErrorToastInUi(int resId) {
3342		if (mOnShowErrorToast != null) {
3343			mOnShowErrorToast.onShowErrorToast(resId);
3344		}
3345	}
3346
3347	public void updateConversationUi() {
3348		if (mOnConversationUpdate != null) {
3349			mOnConversationUpdate.onConversationUpdate();
3350		}
3351	}
3352
3353	public void updateAccountUi() {
3354		if (mOnAccountUpdate != null) {
3355			mOnAccountUpdate.onAccountUpdate();
3356		}
3357	}
3358
3359	public void updateRosterUi() {
3360		if (mOnRosterUpdate != null) {
3361			mOnRosterUpdate.onRosterUpdate();
3362		}
3363	}
3364
3365	public boolean displayCaptchaRequest(Account account, String id, Data data, Bitmap captcha) {
3366		if (mOnCaptchaRequested != null) {
3367			DisplayMetrics metrics = getApplicationContext().getResources().getDisplayMetrics();
3368			Bitmap scaled = Bitmap.createScaledBitmap(captcha, (int) (captcha.getWidth() * metrics.scaledDensity),
3369					(int) (captcha.getHeight() * metrics.scaledDensity), false);
3370
3371			mOnCaptchaRequested.onCaptchaRequested(account, id, data, scaled);
3372			return true;
3373		}
3374		return false;
3375	}
3376
3377	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
3378		if (mOnUpdateBlocklist != null) {
3379			mOnUpdateBlocklist.OnUpdateBlocklist(status);
3380		}
3381	}
3382
3383	public void updateMucRosterUi() {
3384		if (mOnMucRosterUpdate != null) {
3385			mOnMucRosterUpdate.onMucRosterUpdate();
3386		}
3387	}
3388
3389	public void keyStatusUpdated(AxolotlService.FetchStatus report) {
3390		if (mOnKeyStatusUpdated != null) {
3391			mOnKeyStatusUpdated.onKeyStatusUpdated(report);
3392		}
3393	}
3394
3395	public Account findAccountByJid(final Jid accountJid) {
3396		for (Account account : this.accounts) {
3397			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
3398				return account;
3399			}
3400		}
3401		return null;
3402	}
3403
3404	public Conversation findConversationByUuid(String uuid) {
3405		for (Conversation conversation : getConversations()) {
3406			if (conversation.getUuid().equals(uuid)) {
3407				return conversation;
3408			}
3409		}
3410		return null;
3411	}
3412
3413	public boolean markRead(final Conversation conversation) {
3414		return markRead(conversation, true);
3415	}
3416
3417	public boolean markRead(final Conversation conversation, boolean clear) {
3418		if (clear) {
3419			mNotificationService.clear(conversation);
3420		}
3421		final List<Message> readMessages = conversation.markRead();
3422		if (readMessages.size() > 0) {
3423			Runnable runnable = new Runnable() {
3424				@Override
3425				public void run() {
3426					for (Message message : readMessages) {
3427						databaseBackend.updateMessage(message);
3428					}
3429				}
3430			};
3431			mDatabaseWriterExecutor.execute(runnable);
3432			updateUnreadCountBadge();
3433			return true;
3434		} else {
3435			return false;
3436		}
3437	}
3438
3439	public synchronized void updateUnreadCountBadge() {
3440		int count = unreadCount();
3441		if (unreadCount != count) {
3442			Log.d(Config.LOGTAG, "update unread count to " + count);
3443			if (count > 0) {
3444				ShortcutBadger.applyCount(getApplicationContext(), count);
3445			} else {
3446				ShortcutBadger.removeCount(getApplicationContext());
3447			}
3448			unreadCount = count;
3449		}
3450	}
3451
3452	public void sendReadMarker(final Conversation conversation) {
3453		final boolean isPrivateAndNonAnonymousMuc = conversation.getMode() == Conversation.MODE_MULTI && conversation.isPrivateAndNonAnonymous();
3454		final Message markable = conversation.getLatestMarkableMessage(isPrivateAndNonAnonymousMuc);
3455		if (this.markRead(conversation)) {
3456			updateConversationUi();
3457		}
3458		if (confirmMessages()
3459				&& markable != null
3460				&& (markable.trusted() || isPrivateAndNonAnonymousMuc)
3461				&& markable.getRemoteMsgId() != null) {
3462			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": sending read marker to " + markable.getCounterpart().toString());
3463			Account account = conversation.getAccount();
3464			final Jid to = markable.getCounterpart();
3465			final boolean groupChat = conversation.getMode() == Conversation.MODE_MULTI;
3466			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId(), markable.getCounterpart(), groupChat);
3467			this.sendMessagePacket(conversation.getAccount(), packet);
3468		}
3469	}
3470
3471	public SecureRandom getRNG() {
3472		return this.mRandom;
3473	}
3474
3475	public MemorizingTrustManager getMemorizingTrustManager() {
3476		return this.mMemorizingTrustManager;
3477	}
3478
3479	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
3480		this.mMemorizingTrustManager = trustManager;
3481	}
3482
3483	public void updateMemorizingTrustmanager() {
3484		final MemorizingTrustManager tm;
3485		final boolean dontTrustSystemCAs = getBooleanPreference("dont_trust_system_cas", R.bool.dont_trust_system_cas);
3486		if (dontTrustSystemCAs) {
3487			tm = new MemorizingTrustManager(getApplicationContext(), null);
3488		} else {
3489			tm = new MemorizingTrustManager(getApplicationContext());
3490		}
3491		setMemorizingTrustManager(tm);
3492	}
3493
3494	public PowerManager getPowerManager() {
3495		return this.pm;
3496	}
3497
3498	public LruCache<String, Bitmap> getBitmapCache() {
3499		return this.mBitmapCache;
3500	}
3501
3502	public void syncRosterToDisk(final Account account) {
3503		Runnable runnable = new Runnable() {
3504
3505			@Override
3506			public void run() {
3507				databaseBackend.writeRoster(account.getRoster());
3508			}
3509		};
3510		mDatabaseWriterExecutor.execute(runnable);
3511
3512	}
3513
3514	public List<String> getKnownHosts() {
3515		final List<String> hosts = new ArrayList<>();
3516		for (final Account account : getAccounts()) {
3517			if (!hosts.contains(account.getServer().toString())) {
3518				hosts.add(account.getServer().toString());
3519			}
3520			for (final Contact contact : account.getRoster().getContacts()) {
3521				if (contact.showInRoster()) {
3522					final String server = contact.getServer().toString();
3523					if (server != null && !hosts.contains(server)) {
3524						hosts.add(server);
3525					}
3526				}
3527			}
3528		}
3529		if (Config.DOMAIN_LOCK != null && !hosts.contains(Config.DOMAIN_LOCK)) {
3530			hosts.add(Config.DOMAIN_LOCK);
3531		}
3532		if (Config.MAGIC_CREATE_DOMAIN != null && !hosts.contains(Config.MAGIC_CREATE_DOMAIN)) {
3533			hosts.add(Config.MAGIC_CREATE_DOMAIN);
3534		}
3535		return hosts;
3536	}
3537
3538	public List<String> getKnownConferenceHosts() {
3539		final ArrayList<String> mucServers = new ArrayList<>();
3540		for (final Account account : accounts) {
3541			if (account.getXmppConnection() != null) {
3542				final String server = account.getXmppConnection().getMucServer();
3543				if (server != null && !mucServers.contains(server)) {
3544					mucServers.add(server);
3545				}
3546				for (Bookmark bookmark : account.getBookmarks()) {
3547					final Jid jid = bookmark.getJid();
3548					final String s = jid == null ? null : jid.getDomainpart();
3549					if (s != null && !mucServers.contains(s)) {
3550						mucServers.add(s);
3551					}
3552				}
3553			}
3554		}
3555		return mucServers;
3556	}
3557
3558	public void sendMessagePacket(Account account, MessagePacket packet) {
3559		XmppConnection connection = account.getXmppConnection();
3560		if (connection != null) {
3561			connection.sendMessagePacket(packet);
3562		}
3563	}
3564
3565	public void sendPresencePacket(Account account, PresencePacket packet) {
3566		XmppConnection connection = account.getXmppConnection();
3567		if (connection != null) {
3568			connection.sendPresencePacket(packet);
3569		}
3570	}
3571
3572	public void sendCreateAccountWithCaptchaPacket(Account account, String id, Data data) {
3573		final XmppConnection connection = account.getXmppConnection();
3574		if (connection != null) {
3575			IqPacket request = mIqGenerator.generateCreateAccountWithCaptcha(account, id, data);
3576			connection.sendUnmodifiedIqPacket(request, connection.registrationResponseListener);
3577		}
3578	}
3579
3580	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
3581		final XmppConnection connection = account.getXmppConnection();
3582		if (connection != null) {
3583			connection.sendIqPacket(packet, callback);
3584		}
3585	}
3586
3587	public void sendPresence(final Account account) {
3588		sendPresence(account, checkListeners() && broadcastLastActivity());
3589	}
3590
3591	private void sendPresence(final Account account, final boolean includeIdleTimestamp) {
3592		PresencePacket packet;
3593		if (manuallyChangePresence()) {
3594			packet = mPresenceGenerator.selfPresence(account, account.getPresenceStatus());
3595			String message = account.getPresenceStatusMessage();
3596			if (message != null && !message.isEmpty()) {
3597				packet.addChild(new Element("status").setContent(message));
3598			}
3599		} else {
3600			packet = mPresenceGenerator.selfPresence(account, getTargetPresence());
3601		}
3602		if (mLastActivity > 0 && includeIdleTimestamp) {
3603			long since = Math.min(mLastActivity, System.currentTimeMillis()); //don't send future dates
3604			packet.addChild("idle", Namespace.IDLE).setAttribute("since", AbstractGenerator.getTimestamp(since));
3605		}
3606		sendPresencePacket(account, packet);
3607	}
3608
3609	private void deactivateGracePeriod() {
3610		for (Account account : getAccounts()) {
3611			account.deactivateGracePeriod();
3612		}
3613	}
3614
3615	public void refreshAllPresences() {
3616		boolean includeIdleTimestamp = checkListeners() && broadcastLastActivity();
3617		for (Account account : getAccounts()) {
3618			if (account.isEnabled()) {
3619				sendPresence(account, includeIdleTimestamp);
3620			}
3621		}
3622	}
3623
3624	private void refreshAllGcmTokens() {
3625		for (Account account : getAccounts()) {
3626			if (account.isOnlineAndConnected() && mPushManagementService.available(account)) {
3627				mPushManagementService.registerPushTokenOnServer(account);
3628			}
3629		}
3630	}
3631
3632	private void sendOfflinePresence(final Account account) {
3633		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": sending offline presence");
3634		sendPresencePacket(account, mPresenceGenerator.sendOfflinePresence(account));
3635	}
3636
3637	public MessageGenerator getMessageGenerator() {
3638		return this.mMessageGenerator;
3639	}
3640
3641	public PresenceGenerator getPresenceGenerator() {
3642		return this.mPresenceGenerator;
3643	}
3644
3645	public IqGenerator getIqGenerator() {
3646		return this.mIqGenerator;
3647	}
3648
3649	public IqParser getIqParser() {
3650		return this.mIqParser;
3651	}
3652
3653	public JingleConnectionManager getJingleConnectionManager() {
3654		return this.mJingleConnectionManager;
3655	}
3656
3657	public MessageArchiveService getMessageArchiveService() {
3658		return this.mMessageArchiveService;
3659	}
3660
3661	public List<Contact> findContacts(Jid jid, String accountJid) {
3662		ArrayList<Contact> contacts = new ArrayList<>();
3663		for (Account account : getAccounts()) {
3664			if ((account.isEnabled() || accountJid != null)
3665					&& (accountJid == null || accountJid.equals(account.getJid().toBareJid().toString()))) {
3666				Contact contact = account.getRoster().getContactFromRoster(jid);
3667				if (contact != null) {
3668					contacts.add(contact);
3669				}
3670			}
3671		}
3672		return contacts;
3673	}
3674
3675	public Conversation findFirstMuc(Jid jid) {
3676		for (Conversation conversation : getConversations()) {
3677			if (conversation.getAccount().isEnabled() && conversation.getJid().toBareJid().equals(jid.toBareJid()) && conversation.getMode() == Conversation.MODE_MULTI) {
3678				return conversation;
3679			}
3680		}
3681		return null;
3682	}
3683
3684	public NotificationService getNotificationService() {
3685		return this.mNotificationService;
3686	}
3687
3688	public HttpConnectionManager getHttpConnectionManager() {
3689		return this.mHttpConnectionManager;
3690	}
3691
3692	public void resendFailedMessages(final Message message) {
3693		final Collection<Message> messages = new ArrayList<>();
3694		Message current = message;
3695		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
3696			messages.add(current);
3697			if (current.mergeable(current.next())) {
3698				current = current.next();
3699			} else {
3700				break;
3701			}
3702		}
3703		for (final Message msg : messages) {
3704			msg.setTime(System.currentTimeMillis());
3705			markMessage(msg, Message.STATUS_WAITING);
3706			this.resendMessage(msg, false);
3707		}
3708	}
3709
3710	public void clearConversationHistory(final Conversation conversation) {
3711		final long clearDate;
3712		final String reference;
3713		if (conversation.countMessages() > 0) {
3714			Message latestMessage = conversation.getLatestMessage();
3715			clearDate = latestMessage.getTimeSent() + 1000;
3716			reference = latestMessage.getServerMsgId();
3717		} else {
3718			clearDate = System.currentTimeMillis();
3719			reference = null;
3720		}
3721		conversation.clearMessages();
3722		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
3723		conversation.setLastClearHistory(clearDate, reference);
3724		Runnable runnable = new Runnable() {
3725			@Override
3726			public void run() {
3727				databaseBackend.deleteMessagesInConversation(conversation);
3728				databaseBackend.updateConversation(conversation);
3729			}
3730		};
3731		mDatabaseWriterExecutor.execute(runnable);
3732	}
3733
3734	public boolean sendBlockRequest(final Blockable blockable, boolean reportSpam) {
3735		if (blockable != null && blockable.getBlockedJid() != null) {
3736			final Jid jid = blockable.getBlockedJid();
3737			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid, reportSpam), new OnIqPacketReceived() {
3738
3739				@Override
3740				public void onIqPacketReceived(final Account account, final IqPacket packet) {
3741					if (packet.getType() == IqPacket.TYPE.RESULT) {
3742						account.getBlocklist().add(jid);
3743						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
3744					}
3745				}
3746			});
3747			if (removeBlockedConversations(blockable.getAccount(), jid)) {
3748				updateConversationUi();
3749				return true;
3750			} else {
3751				return false;
3752			}
3753		} else {
3754			return false;
3755		}
3756	}
3757
3758	public boolean removeBlockedConversations(final Account account, final Jid blockedJid) {
3759		boolean removed = false;
3760		synchronized (this.conversations) {
3761			boolean domainJid = blockedJid.isDomainJid();
3762			for (Conversation conversation : this.conversations) {
3763				boolean jidMatches = (domainJid && blockedJid.getDomainpart().equals(conversation.getJid().getDomainpart()))
3764						|| blockedJid.equals(conversation.getJid().toBareJid());
3765				if (conversation.getAccount() == account
3766						&& conversation.getMode() == Conversation.MODE_SINGLE
3767						&& jidMatches) {
3768					this.conversations.remove(conversation);
3769					markRead(conversation);
3770					conversation.setStatus(Conversation.STATUS_ARCHIVED);
3771					Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": archiving conversation " + conversation.getJid().toBareJid() + " because jid was blocked");
3772					updateConversation(conversation);
3773					removed = true;
3774				}
3775			}
3776		}
3777		return removed;
3778	}
3779
3780	public void sendUnblockRequest(final Blockable blockable) {
3781		if (blockable != null && blockable.getJid() != null) {
3782			final Jid jid = blockable.getBlockedJid();
3783			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
3784				@Override
3785				public void onIqPacketReceived(final Account account, final IqPacket packet) {
3786					if (packet.getType() == IqPacket.TYPE.RESULT) {
3787						account.getBlocklist().remove(jid);
3788						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
3789					}
3790				}
3791			});
3792		}
3793	}
3794
3795	public void publishDisplayName(Account account) {
3796		String displayName = account.getDisplayName();
3797		if (displayName != null && !displayName.isEmpty()) {
3798			IqPacket publish = mIqGenerator.publishNick(displayName);
3799			sendIqPacket(account, publish, new OnIqPacketReceived() {
3800				@Override
3801				public void onIqPacketReceived(Account account, IqPacket packet) {
3802					if (packet.getType() == IqPacket.TYPE.ERROR) {
3803						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not publish nick");
3804					}
3805				}
3806			});
3807		}
3808	}
3809
3810	public ServiceDiscoveryResult getCachedServiceDiscoveryResult(Pair<String, String> key) {
3811		ServiceDiscoveryResult result = discoCache.get(key);
3812		if (result != null) {
3813			return result;
3814		} else {
3815			result = databaseBackend.findDiscoveryResult(key.first, key.second);
3816			if (result != null) {
3817				discoCache.put(key, result);
3818			}
3819			return result;
3820		}
3821	}
3822
3823	public void fetchCaps(Account account, final Jid jid, final Presence presence) {
3824		final Pair<String, String> key = new Pair<>(presence.getHash(), presence.getVer());
3825		ServiceDiscoveryResult disco = getCachedServiceDiscoveryResult(key);
3826		if (disco != null) {
3827			presence.setServiceDiscoveryResult(disco);
3828		} else {
3829			if (!account.inProgressDiscoFetches.contains(key)) {
3830				account.inProgressDiscoFetches.add(key);
3831				IqPacket request = new IqPacket(IqPacket.TYPE.GET);
3832				request.setTo(jid);
3833				request.query("http://jabber.org/protocol/disco#info");
3834				Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": making disco request for " + key.second + " to " + jid);
3835				sendIqPacket(account, request, new OnIqPacketReceived() {
3836					@Override
3837					public void onIqPacketReceived(Account account, IqPacket discoPacket) {
3838						if (discoPacket.getType() == IqPacket.TYPE.RESULT) {
3839							ServiceDiscoveryResult disco = new ServiceDiscoveryResult(discoPacket);
3840							if (presence.getVer().equals(disco.getVer())) {
3841								databaseBackend.insertDiscoveryResult(disco);
3842								injectServiceDiscorveryResult(account.getRoster(), presence.getHash(), presence.getVer(), disco);
3843							} else {
3844								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": mismatch in caps for contact " + jid + " " + presence.getVer() + " vs " + disco.getVer());
3845							}
3846						}
3847						account.inProgressDiscoFetches.remove(key);
3848					}
3849				});
3850			}
3851		}
3852	}
3853
3854	private void injectServiceDiscorveryResult(Roster roster, String hash, String ver, ServiceDiscoveryResult disco) {
3855		for (Contact contact : roster.getContacts()) {
3856			for (Presence presence : contact.getPresences().getPresences().values()) {
3857				if (hash.equals(presence.getHash()) && ver.equals(presence.getVer())) {
3858					presence.setServiceDiscoveryResult(disco);
3859				}
3860			}
3861		}
3862	}
3863
3864	public void fetchMamPreferences(Account account, final OnMamPreferencesFetched callback) {
3865		final boolean legacy = account.getXmppConnection().getFeatures().mamLegacy();
3866		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
3867		request.addChild("prefs", legacy ? Namespace.MAM_LEGACY : Namespace.MAM);
3868		sendIqPacket(account, request, new OnIqPacketReceived() {
3869			@Override
3870			public void onIqPacketReceived(Account account, IqPacket packet) {
3871				Element prefs = packet.findChild("prefs", legacy ? Namespace.MAM_LEGACY : Namespace.MAM);
3872				if (packet.getType() == IqPacket.TYPE.RESULT && prefs != null) {
3873					callback.onPreferencesFetched(prefs);
3874				} else {
3875					callback.onPreferencesFetchFailed();
3876				}
3877			}
3878		});
3879	}
3880
3881	public PushManagementService getPushManagementService() {
3882		return mPushManagementService;
3883	}
3884
3885	public Account getPendingAccount() {
3886		Account pending = null;
3887		for (Account account : getAccounts()) {
3888			if (account.isOptionSet(Account.OPTION_REGISTER)) {
3889				pending = account;
3890			} else {
3891				return null;
3892			}
3893		}
3894		return pending;
3895	}
3896
3897	public void changeStatus(Account account, Presence.Status status, String statusMessage, boolean send) {
3898		if (!statusMessage.isEmpty()) {
3899			databaseBackend.insertPresenceTemplate(new PresenceTemplate(status, statusMessage));
3900		}
3901		changeStatusReal(account, status, statusMessage, send);
3902	}
3903
3904	private void changeStatusReal(Account account, Presence.Status status, String statusMessage, boolean send) {
3905		account.setPresenceStatus(status);
3906		account.setPresenceStatusMessage(statusMessage);
3907		databaseBackend.updateAccount(account);
3908		if (account.isEnabled() && send) {
3909			sendPresence(account);
3910		}
3911	}
3912
3913	public void changeStatus(Presence.Status status, String statusMessage) {
3914		if (!statusMessage.isEmpty()) {
3915			databaseBackend.insertPresenceTemplate(new PresenceTemplate(status, statusMessage));
3916		}
3917		for (Account account : getAccounts()) {
3918			changeStatusReal(account, status, statusMessage, true);
3919		}
3920	}
3921
3922	public List<PresenceTemplate> getPresenceTemplates(Account account) {
3923		List<PresenceTemplate> templates = databaseBackend.getPresenceTemplates();
3924		for (PresenceTemplate template : account.getSelfContact().getPresences().asTemplates()) {
3925			if (!templates.contains(template)) {
3926				templates.add(0, template);
3927			}
3928		}
3929		return templates;
3930	}
3931
3932	public void saveConversationAsBookmark(Conversation conversation, String name) {
3933		Account account = conversation.getAccount();
3934		Bookmark bookmark = new Bookmark(account, conversation.getJid().toBareJid());
3935		if (!conversation.getJid().isBareJid()) {
3936			bookmark.setNick(conversation.getJid().getResourcepart());
3937		}
3938		if (name != null && !name.trim().isEmpty()) {
3939			bookmark.setBookmarkName(name.trim());
3940		}
3941		bookmark.setAutojoin(getPreferences().getBoolean("autojoin", getResources().getBoolean(R.bool.autojoin)));
3942		account.getBookmarks().add(bookmark);
3943		pushBookmarks(account);
3944		conversation.setBookmark(bookmark);
3945	}
3946
3947	public boolean verifyFingerprints(Contact contact, List<XmppUri.Fingerprint> fingerprints) {
3948		boolean needsRosterWrite = false;
3949		boolean performedVerification = false;
3950		final AxolotlService axolotlService = contact.getAccount().getAxolotlService();
3951		for (XmppUri.Fingerprint fp : fingerprints) {
3952			if (fp.type == XmppUri.FingerprintType.OTR) {
3953				performedVerification |= contact.addOtrFingerprint(fp.fingerprint);
3954				needsRosterWrite |= performedVerification;
3955			} else if (fp.type == XmppUri.FingerprintType.OMEMO) {
3956				String fingerprint = "05" + fp.fingerprint.replaceAll("\\s", "");
3957				FingerprintStatus fingerprintStatus = axolotlService.getFingerprintTrust(fingerprint);
3958				if (fingerprintStatus != null) {
3959					if (!fingerprintStatus.isVerified()) {
3960						performedVerification = true;
3961						axolotlService.setFingerprintTrust(fingerprint, fingerprintStatus.toVerified());
3962					}
3963				} else {
3964					axolotlService.preVerifyFingerprint(contact, fingerprint);
3965				}
3966			}
3967		}
3968		if (needsRosterWrite) {
3969			syncRosterToDisk(contact.getAccount());
3970		}
3971		return performedVerification;
3972	}
3973
3974	public boolean verifyFingerprints(Account account, List<XmppUri.Fingerprint> fingerprints) {
3975		final AxolotlService axolotlService = account.getAxolotlService();
3976		boolean verifiedSomething = false;
3977		for (XmppUri.Fingerprint fp : fingerprints) {
3978			if (fp.type == XmppUri.FingerprintType.OMEMO) {
3979				String fingerprint = "05" + fp.fingerprint.replaceAll("\\s", "");
3980				Log.d(Config.LOGTAG, "trying to verify own fp=" + fingerprint);
3981				FingerprintStatus fingerprintStatus = axolotlService.getFingerprintTrust(fingerprint);
3982				if (fingerprintStatus != null) {
3983					if (!fingerprintStatus.isVerified()) {
3984						axolotlService.setFingerprintTrust(fingerprint, fingerprintStatus.toVerified());
3985						verifiedSomething = true;
3986					}
3987				} else {
3988					axolotlService.preVerifyFingerprint(account, fingerprint);
3989					verifiedSomething = true;
3990				}
3991			}
3992		}
3993		return verifiedSomething;
3994	}
3995
3996	public boolean blindTrustBeforeVerification() {
3997		return getBooleanPreference(SettingsActivity.BLIND_TRUST_BEFORE_VERIFICATION, R.bool.btbv);
3998	}
3999
4000	public ShortcutService getShortcutService() {
4001		return mShortcutService;
4002	}
4003
4004	public interface OnMamPreferencesFetched {
4005		void onPreferencesFetched(Element prefs);
4006
4007		void onPreferencesFetchFailed();
4008	}
4009
4010	public void pushMamPreferences(Account account, Element prefs) {
4011		IqPacket set = new IqPacket(IqPacket.TYPE.SET);
4012		set.addChild(prefs);
4013		sendIqPacket(account, set, null);
4014	}
4015
4016	public interface OnAccountCreated {
4017		void onAccountCreated(Account account);
4018
4019		void informUser(int r);
4020	}
4021
4022	public interface OnMoreMessagesLoaded {
4023		void onMoreMessagesLoaded(int count, Conversation conversation);
4024
4025		void informUser(int r);
4026	}
4027
4028	public interface OnAccountPasswordChanged {
4029		void onPasswordChangeSucceeded();
4030
4031		void onPasswordChangeFailed();
4032	}
4033
4034	public interface OnAffiliationChanged {
4035		void onAffiliationChangedSuccessful(Jid jid);
4036
4037		void onAffiliationChangeFailed(Jid jid, int resId);
4038	}
4039
4040	public interface OnRoleChanged {
4041		void onRoleChangedSuccessful(String nick);
4042
4043		void onRoleChangeFailed(String nick, int resid);
4044	}
4045
4046	public interface OnConversationUpdate {
4047		void onConversationUpdate();
4048	}
4049
4050	public interface OnAccountUpdate {
4051		void onAccountUpdate();
4052	}
4053
4054	public interface OnCaptchaRequested {
4055		void onCaptchaRequested(Account account,
4056		                        String id,
4057		                        Data data,
4058		                        Bitmap captcha);
4059	}
4060
4061	public interface OnRosterUpdate {
4062		void onRosterUpdate();
4063	}
4064
4065	public interface OnMucRosterUpdate {
4066		void onMucRosterUpdate();
4067	}
4068
4069	public interface OnConferenceConfigurationFetched {
4070		void onConferenceConfigurationFetched(Conversation conversation);
4071
4072		void onFetchFailed(Conversation conversation, Element error);
4073	}
4074
4075	public interface OnConferenceJoined {
4076		void onConferenceJoined(Conversation conversation);
4077	}
4078
4079	public interface OnConfigurationPushed {
4080		void onPushSucceeded();
4081
4082		void onPushFailed();
4083	}
4084
4085	public interface OnShowErrorToast {
4086		void onShowErrorToast(int resId);
4087	}
4088
4089	public class XmppConnectionBinder extends Binder {
4090		public XmppConnectionService getService() {
4091			return XmppConnectionService.this;
4092		}
4093	}
4094}