XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.math.BigInteger;
  36import java.security.SecureRandom;
  37import java.util.ArrayList;
  38import java.util.Collections;
  39import java.util.Comparator;
  40import java.util.Hashtable;
  41import java.util.List;
  42import java.util.Locale;
  43import java.util.concurrent.CopyOnWriteArrayList;
  44
  45import de.duenndns.ssl.MemorizingTrustManager;
  46import eu.siacs.conversations.Config;
  47import eu.siacs.conversations.R;
  48import eu.siacs.conversations.crypto.PgpEngine;
  49import eu.siacs.conversations.entities.Account;
  50import eu.siacs.conversations.entities.Bookmark;
  51import eu.siacs.conversations.entities.Contact;
  52import eu.siacs.conversations.entities.Conversation;
  53import eu.siacs.conversations.entities.Downloadable;
  54import eu.siacs.conversations.entities.DownloadableFile;
  55import eu.siacs.conversations.entities.DownloadablePlaceholder;
  56import eu.siacs.conversations.entities.Message;
  57import eu.siacs.conversations.entities.MucOptions;
  58import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  59import eu.siacs.conversations.entities.Presences;
  60import eu.siacs.conversations.generator.IqGenerator;
  61import eu.siacs.conversations.generator.MessageGenerator;
  62import eu.siacs.conversations.generator.PresenceGenerator;
  63import eu.siacs.conversations.http.HttpConnectionManager;
  64import eu.siacs.conversations.parser.IqParser;
  65import eu.siacs.conversations.parser.MessageParser;
  66import eu.siacs.conversations.parser.PresenceParser;
  67import eu.siacs.conversations.persistance.DatabaseBackend;
  68import eu.siacs.conversations.persistance.FileBackend;
  69import eu.siacs.conversations.ui.UiCallback;
  70import eu.siacs.conversations.utils.CryptoHelper;
  71import eu.siacs.conversations.utils.ExceptionHelper;
  72import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  73import eu.siacs.conversations.utils.PRNGFixes;
  74import eu.siacs.conversations.utils.PhoneHelper;
  75import eu.siacs.conversations.xml.Element;
  76import eu.siacs.conversations.xmpp.OnBindListener;
  77import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  78import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  79import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  80import eu.siacs.conversations.xmpp.OnStatusChanged;
  81import eu.siacs.conversations.xmpp.XmppConnection;
  82import eu.siacs.conversations.xmpp.forms.Data;
  83import eu.siacs.conversations.xmpp.forms.Field;
  84import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  85import eu.siacs.conversations.xmpp.jid.Jid;
  86import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  87import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  88import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  89import eu.siacs.conversations.xmpp.pep.Avatar;
  90import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  91import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  92import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  93
  94public class XmppConnectionService extends Service {
  95
  96	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
  97	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  98	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
  99	private ContentObserver contactObserver = new ContentObserver(null) {
 100		@Override
 101		public void onChange(boolean selfChange) {
 102			super.onChange(selfChange);
 103			Intent intent = new Intent(getApplicationContext(),
 104					XmppConnectionService.class);
 105			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 106			startService(intent);
 107		}
 108	};
 109	private final IBinder mBinder = new XmppConnectionBinder();
 110	public DatabaseBackend databaseBackend;
 111	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 112
 113		@Override
 114		public void onContactStatusChanged(Contact contact, boolean online) {
 115			Conversation conversation = find(getConversations(), contact);
 116			if (conversation != null) {
 117				if (online && contact.getPresences().size() > 1) {
 118					conversation.endOtrIfNeeded();
 119				} else {
 120					conversation.resetOtrSession();
 121				}
 122				if (online && (contact.getPresences().size() == 1)) {
 123					sendUnsendMessages(conversation);
 124				}
 125			}
 126		}
 127	};
 128	private FileBackend fileBackend = new FileBackend(this);
 129	private MemorizingTrustManager mMemorizingTrustManager;
 130	private NotificationService mNotificationService = new NotificationService(
 131			this);
 132	private MessageParser mMessageParser = new MessageParser(this);
 133	private PresenceParser mPresenceParser = new PresenceParser(this);
 134	private IqParser mIqParser = new IqParser(this);
 135	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 136	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 137	private List<Account> accounts;
 138	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 139	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 140			this);
 141	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 142			this);
 143	private AvatarService mAvatarService = new AvatarService(this);
 144	private OnConversationUpdate mOnConversationUpdate = null;
 145	private Integer convChangedListenerCount = 0;
 146	private OnAccountUpdate mOnAccountUpdate = null;
 147	private OnStatusChanged statusListener = new OnStatusChanged() {
 148
 149		@Override
 150		public void onStatusChanged(Account account) {
 151			XmppConnection connection = account.getXmppConnection();
 152			if (mOnAccountUpdate != null) {
 153				mOnAccountUpdate.onAccountUpdate();
 154			}
 155			if (account.getStatus() == Account.State.ONLINE) {
 156				for (Conversation conversation : account.pendingConferenceLeaves) {
 157					leaveMuc(conversation);
 158				}
 159				for (Conversation conversation : account.pendingConferenceJoins) {
 160					joinMuc(conversation);
 161				}
 162				mJingleConnectionManager.cancelInTransmission();
 163				List<Conversation> conversations = getConversations();
 164				for (Conversation conversation : conversations) {
 165					if (conversation.getAccount() == account) {
 166						conversation.startOtrIfNeeded();
 167						sendUnsendMessages(conversation);
 168					}
 169				}
 170				if (connection != null && connection.getFeatures().csi()) {
 171					if (checkListeners()) {
 172						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 173								+ " sending csi//inactive");
 174						connection.sendInactive();
 175					} else {
 176						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 177								+ " sending csi//active");
 178						connection.sendActive();
 179					}
 180				}
 181				syncDirtyContacts(account);
 182				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 183			} else if (account.getStatus() == Account.State.OFFLINE) {
 184				resetSendingToWaiting(account);
 185				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 186					int timeToReconnect = mRandom.nextInt(50) + 10;
 187					scheduleWakeupCall(timeToReconnect, false);
 188				}
 189			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 190				databaseBackend.updateAccount(account);
 191				reconnectAccount(account, true);
 192			} else if ((account.getStatus() != Account.State.CONNECTING)
 193					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 194				if (connection != null) {
 195					int next = connection.getTimeToNextAttempt();
 196					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 197							+ ": error connecting account. try again in "
 198							+ next + "s for the "
 199							+ (connection.getAttempt() + 1) + " time");
 200					scheduleWakeupCall((int) (next * 1.2), false);
 201				}
 202					}
 203			getNotificationService().updateErrorNotification();
 204		}
 205	};
 206	private int accountChangedListenerCount = 0;
 207	private OnRosterUpdate mOnRosterUpdate = null;
 208	private int rosterChangedListenerCount = 0;
 209	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 210	private int mucRosterChangedListenerCount = 0;
 211	private SecureRandom mRandom;
 212	private FileObserver fileObserver = new FileObserver(
 213			FileBackend.getConversationsImageDirectory()) {
 214
 215		@Override
 216		public void onEvent(int event, String path) {
 217			if (event == FileObserver.DELETE) {
 218				markFileDeleted(path.split("\\.")[0]);
 219			}
 220		}
 221	};
 222	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 223
 224		@Override
 225		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 226			mJingleConnectionManager.deliverPacket(account, packet);
 227		}
 228	};
 229
 230	private OpenPgpServiceConnection pgpServiceConnection;
 231	private PgpEngine mPgpEngine = null;
 232	private Intent pingIntent;
 233	private PendingIntent pendingPingIntent = null;
 234	private WakeLock wakeLock;
 235	private PowerManager pm;
 236	private OnBindListener mOnBindListener = new OnBindListener() {
 237
 238		@Override
 239		public void onBind(final Account account) {
 240			account.getRoster().clearPresences();
 241			account.clearPresences(); // self presences
 242			account.pendingConferenceJoins.clear();
 243			account.pendingConferenceLeaves.clear();
 244			fetchRosterFromServer(account);
 245			fetchBookmarks(account);
 246			sendPresencePacket(account,
 247					mPresenceGenerator.sendPresence(account));
 248			connectMultiModeConversations(account);
 249			updateConversationUi();
 250		}
 251	};
 252
 253	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 254
 255		@Override
 256		public void onMessageAcknowledged(Account account, String uuid) {
 257			for (Conversation conversation : getConversations()) {
 258				if (conversation.getAccount() == account) {
 259					for (Message message : conversation.getMessages()) {
 260						if ((message.getStatus() == Message.STATUS_UNSEND || message
 261									.getStatus() == Message.STATUS_WAITING)
 262								&& message.getUuid().equals(uuid)) {
 263							markMessage(message, Message.STATUS_SEND);
 264							return;
 265								}
 266					}
 267				}
 268			}
 269		}
 270	};
 271	private LruCache<String, Bitmap> mBitmapCache;
 272	private IqGenerator mIqGenerator = new IqGenerator(this);
 273
 274	public PgpEngine getPgpEngine() {
 275		if (pgpServiceConnection.isBound()) {
 276			if (this.mPgpEngine == null) {
 277				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 278							getApplicationContext(),
 279							pgpServiceConnection.getService()), this);
 280			}
 281			return mPgpEngine;
 282		} else {
 283			return null;
 284		}
 285
 286	}
 287
 288	public FileBackend getFileBackend() {
 289		return this.fileBackend;
 290	}
 291
 292	public AvatarService getAvatarService() {
 293		return this.mAvatarService;
 294	}
 295
 296	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 297		final Message message;
 298		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 299			message = new Message(conversation, "",
 300					Message.ENCRYPTION_DECRYPTED);
 301		} else {
 302			message = new Message(conversation, "",
 303					conversation.getNextEncryption(forceEncryption()));
 304		}
 305		message.setCounterpart(conversation.getNextCounterpart());
 306		message.setType(Message.TYPE_FILE);
 307		message.setStatus(Message.STATUS_OFFERED);
 308		String path = getFileBackend().getOriginalPath(uri);
 309		if (path!=null) {
 310			message.setRelativeFilePath(path);
 311			getFileBackend().updateFileParams(message);
 312			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 313				getPgpEngine().encrypt(message, callback);
 314			} else {
 315				callback.success(message);
 316			}
 317		} else {
 318			new Thread(new Runnable() {
 319				@Override
 320				public void run() {
 321					try {
 322						getFileBackend().copyFileToPrivateStorage(message, uri);
 323						getFileBackend().updateFileParams(message);
 324						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 325							getPgpEngine().encrypt(message, callback);
 326						} else {
 327							callback.success(message);
 328						}
 329					} catch (FileBackend.FileCopyException e) {
 330						callback.error(e.getResId(),message);
 331					}
 332				}
 333			}).start();
 334
 335		}
 336	}
 337
 338	public void attachImageToConversation(final Conversation conversation,
 339			final Uri uri, final UiCallback<Message> callback) {
 340		final Message message;
 341		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 342			message = new Message(conversation, "",
 343					Message.ENCRYPTION_DECRYPTED);
 344		} else {
 345			message = new Message(conversation, "",
 346					conversation.getNextEncryption(forceEncryption()));
 347		}
 348		message.setCounterpart(conversation.getNextCounterpart());
 349		message.setType(Message.TYPE_IMAGE);
 350		message.setStatus(Message.STATUS_OFFERED);
 351		new Thread(new Runnable() {
 352
 353			@Override
 354			public void run() {
 355				try {
 356					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 357					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 358						getPgpEngine().encrypt(message, callback);
 359					} else {
 360						callback.success(message);
 361					}
 362				} catch (FileBackend.FileCopyException e) {
 363					callback.error(e.getResId(), message);
 364				}
 365			}
 366		}).start();
 367	}
 368
 369	public Conversation find(Bookmark bookmark) {
 370		return find(bookmark.getAccount(), bookmark.getJid());
 371	}
 372
 373	public Conversation find(final Account account, final Jid jid) {
 374		return find(getConversations(), account, jid);
 375	}
 376
 377	@Override
 378	public int onStartCommand(Intent intent, int flags, int startId) {
 379		if (intent != null && intent.getAction() != null) {
 380			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 381				mergePhoneContactsWithRoster();
 382				return START_STICKY;
 383			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 384				logoutAndSave();
 385				return START_NOT_STICKY;
 386			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 387				mNotificationService.clear();
 388			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 389				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 390				toggleForegroundService();
 391			}
 392		}
 393		this.wakeLock.acquire();
 394
 395		for (Account account : accounts) {
 396			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 397				if (!hasInternetConnection()) {
 398					account.setStatus(Account.State.NO_INTERNET);
 399					if (statusListener != null) {
 400						statusListener.onStatusChanged(account);
 401					}
 402				} else {
 403					if (account.getStatus() == Account.State.NO_INTERNET) {
 404						account.setStatus(Account.State.OFFLINE);
 405						if (statusListener != null) {
 406							statusListener.onStatusChanged(account);
 407						}
 408					}
 409					if (account.getStatus() == Account.State.ONLINE) {
 410						long lastReceived = account.getXmppConnection()
 411							.getLastPacketReceived();
 412						long lastSent = account.getXmppConnection()
 413							.getLastPingSent();
 414						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 415							Log.d(Config.LOGTAG, account.getJid()
 416									+ ": ping timeout");
 417							this.reconnectAccount(account, true);
 418						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 419							account.getXmppConnection().sendPing();
 420							this.scheduleWakeupCall(2, false);
 421						}
 422					} else if (account.getStatus() == Account.State.OFFLINE) {
 423						if (account.getXmppConnection() == null) {
 424							account.setXmppConnection(this
 425									.createConnection(account));
 426						}
 427						new Thread(account.getXmppConnection()).start();
 428					} else if ((account.getStatus() == Account.State.CONNECTING)
 429							&& ((SystemClock.elapsedRealtime() - account
 430									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 431						Log.d(Config.LOGTAG, account.getJid()
 432								+ ": time out during connect reconnecting");
 433						reconnectAccount(account, true);
 434					} else {
 435						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 436							reconnectAccount(account, true);
 437						}
 438					}
 439					// in any case. reschedule wakup call
 440					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 441				}
 442				if (mOnAccountUpdate != null) {
 443					mOnAccountUpdate.onAccountUpdate();
 444				}
 445			}
 446		}
 447		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 448			if (!pm.isScreenOn()) {
 449			removeStaleListeners();
 450			}*/
 451		if (wakeLock.isHeld()) {
 452			try {
 453				wakeLock.release();
 454			} catch (final RuntimeException ignored) {
 455			}
 456		}
 457		return START_STICKY;
 458	}
 459
 460	public boolean hasInternetConnection() {
 461		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 462			.getSystemService(Context.CONNECTIVITY_SERVICE);
 463		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 464		return activeNetwork != null && activeNetwork.isConnected();
 465	}
 466
 467	@SuppressLint("TrulyRandom")
 468	@Override
 469	public void onCreate() {
 470		ExceptionHelper.init(getApplicationContext());
 471		PRNGFixes.apply();
 472		this.mRandom = new SecureRandom();
 473		this.mMemorizingTrustManager = new MemorizingTrustManager(
 474				getApplicationContext());
 475
 476		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 477		int cacheSize = maxMemory / 8;
 478		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 479			@Override
 480			protected int sizeOf(String key, Bitmap bitmap) {
 481				return bitmap.getByteCount() / 1024;
 482			}
 483		};
 484
 485		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 486		this.accounts = databaseBackend.getAccounts();
 487
 488		for (Account account : this.accounts) {
 489			account.initOtrEngine(this);
 490			this.databaseBackend.readRoster(account.getRoster());
 491		}
 492		initConversations();
 493		this.mergePhoneContactsWithRoster();
 494
 495		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 496		this.fileObserver.startWatching();
 497		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 498		this.pgpServiceConnection.bindToService();
 499
 500		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 501		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 502		toggleForegroundService();
 503	}
 504
 505	public void toggleForegroundService() {
 506		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 507			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 508		} else {
 509			stopForeground(true);
 510		}
 511	}
 512
 513	@Override
 514	public void onTaskRemoved(Intent rootIntent) {
 515		super.onTaskRemoved(rootIntent);
 516		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 517			this.logoutAndSave();
 518		}
 519	}
 520
 521	private void logoutAndSave() {
 522		for (Account account : accounts) {
 523			databaseBackend.writeRoster(account.getRoster());
 524			if (account.getXmppConnection() != null) {
 525				disconnect(account, false);
 526			}
 527		}
 528		Context context = getApplicationContext();
 529		AlarmManager alarmManager = (AlarmManager) context
 530			.getSystemService(Context.ALARM_SERVICE);
 531		Intent intent = new Intent(context, EventReceiver.class);
 532		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 533		Log.d(Config.LOGTAG, "good bye");
 534		stopSelf();
 535	}
 536
 537	protected void scheduleWakeupCall(int seconds, boolean ping) {
 538		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 539		Context context = getApplicationContext();
 540		AlarmManager alarmManager = (AlarmManager) context
 541			.getSystemService(Context.ALARM_SERVICE);
 542
 543		if (ping) {
 544			if (this.pingIntent == null) {
 545				this.pingIntent = new Intent(context, EventReceiver.class);
 546				this.pingIntent.setAction("ping");
 547				this.pingIntent.putExtra("time", timeToWake);
 548				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 549						this.pingIntent, 0);
 550				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 551						timeToWake, pendingPingIntent);
 552			} else {
 553				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 554				if (scheduledTime < SystemClock.elapsedRealtime()
 555						|| (scheduledTime > timeToWake)) {
 556					this.pingIntent.putExtra("time", timeToWake);
 557					alarmManager.cancel(this.pendingPingIntent);
 558					this.pendingPingIntent = PendingIntent.getBroadcast(
 559							context, 0, this.pingIntent, 0);
 560					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 561							timeToWake, pendingPingIntent);
 562						}
 563			}
 564		} else {
 565			Intent intent = new Intent(context, EventReceiver.class);
 566			intent.setAction("ping_check");
 567			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 568					intent, 0);
 569			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 570					alarmIntent);
 571		}
 572
 573	}
 574
 575	public XmppConnection createConnection(Account account) {
 576		SharedPreferences sharedPref = getPreferences();
 577		account.setResource(sharedPref.getString("resource", "mobile")
 578				.toLowerCase(Locale.getDefault()));
 579		XmppConnection connection = new XmppConnection(account, this);
 580		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 581		connection.setOnStatusChangedListener(this.statusListener);
 582		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 583		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 584		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 585		connection.setOnBindListener(this.mOnBindListener);
 586		connection
 587			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 588		return connection;
 589	}
 590
 591	public void sendMessage(Message message) {
 592		Account account = message.getConversation().getAccount();
 593		account.deactivateGracePeriod();
 594		Conversation conv = message.getConversation();
 595		MessagePacket packet = null;
 596		boolean saveInDb = true;
 597		boolean send = false;
 598		if (account.getStatus() == Account.State.ONLINE
 599				&& account.getXmppConnection() != null) {
 600			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 601				if (message.getCounterpart() != null) {
 602					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 603						if (!conv.hasValidOtrSession()) {
 604							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 605							message.setStatus(Message.STATUS_WAITING);
 606						} else if (conv.hasValidOtrSession()
 607								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 608							mJingleConnectionManager
 609								.createNewConnection(message);
 610								}
 611					} else {
 612						mJingleConnectionManager.createNewConnection(message);
 613					}
 614				} else {
 615					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 616						conv.startOtrIfNeeded();
 617					}
 618					message.setStatus(Message.STATUS_WAITING);
 619				}
 620			} else {
 621				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 622					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 623						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 624						message.setStatus(Message.STATUS_WAITING);
 625					} else if (conv.hasValidOtrSession()) {
 626						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 627							packet = mMessageGenerator.generateOtrChat(message);
 628							send = true;
 629						} else {
 630							message.setStatus(Message.STATUS_WAITING);
 631							conv.startOtrIfNeeded();
 632						}
 633					} else {
 634						message.setStatus(Message.STATUS_WAITING);
 635					}
 636				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 637					message.getConversation().endOtrIfNeeded();
 638					failWaitingOtrMessages(message.getConversation());
 639					packet = mMessageGenerator.generatePgpChat(message);
 640					send = true;
 641				} else {
 642					message.getConversation().endOtrIfNeeded();
 643					failWaitingOtrMessages(message.getConversation());
 644					packet = mMessageGenerator.generateChat(message);
 645					send = true;
 646				}
 647			}
 648			if (!account.getXmppConnection().getFeatures().sm()
 649					&& conv.getMode() != Conversation.MODE_MULTI) {
 650				message.setStatus(Message.STATUS_SEND);
 651					}
 652		} else {
 653			message.setStatus(Message.STATUS_WAITING);
 654			if (message.getType() == Message.TYPE_TEXT) {
 655				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 656					String pgpBody = message.getEncryptedBody();
 657					String decryptedBody = message.getBody();
 658					message.setBody(pgpBody);
 659					message.setEncryption(Message.ENCRYPTION_PGP);
 660					databaseBackend.createMessage(message);
 661					saveInDb = false;
 662					message.setBody(decryptedBody);
 663					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 664				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 665					if (!conv.hasValidOtrSession()
 666							&& message.getCounterpart() != null) {
 667						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 668							}
 669				}
 670			}
 671
 672		}
 673		conv.add(message);
 674		if (saveInDb) {
 675			if (message.getEncryption() == Message.ENCRYPTION_NONE
 676					|| saveEncryptedMessages()) {
 677				databaseBackend.createMessage(message);
 678					}
 679		}
 680		if ((send) && (packet != null)) {
 681			sendMessagePacket(account, packet);
 682		}
 683		updateConversationUi();
 684	}
 685
 686	private void sendUnsendMessages(Conversation conversation) {
 687		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 688			int status = conversation.getMessages().get(i).getStatus();
 689			if (status == Message.STATUS_WAITING) {
 690				resendMessage(conversation.getMessages().get(i));
 691			}
 692		}
 693	}
 694
 695	private void resendMessage(Message message) {
 696		Account account = message.getConversation().getAccount();
 697		MessagePacket packet = null;
 698		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 699			Presences presences = message.getConversation().getContact()
 700				.getPresences();
 701			if (!message.getConversation().hasValidOtrSession()) {
 702				if ((message.getCounterpart() != null)
 703						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 704					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 705				} else {
 706					if (presences.size() == 1) {
 707						String presence = presences.asStringArray()[0];
 708						message.getConversation().startOtrSession(presence, true);
 709					}
 710				}
 711			} else {
 712				if (message.getConversation().getOtrSession()
 713						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 714					try {
 715						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 716						if (message.getType() == Message.TYPE_TEXT) {
 717							packet = mMessageGenerator.generateOtrChat(message,
 718									true);
 719						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 720							mJingleConnectionManager.createNewConnection(message);
 721						}
 722					} catch (InvalidJidException e) {
 723
 724					}
 725						}
 726			}
 727		} else if (message.getType() == Message.TYPE_TEXT) {
 728			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 729				packet = mMessageGenerator.generateChat(message, true);
 730			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 731					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 732				packet = mMessageGenerator.generatePgpChat(message, true);
 733					}
 734		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 735			Contact contact = message.getConversation().getContact();
 736			Presences presences = contact.getPresences();
 737			if ((message.getCounterpart() != null)
 738					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 739				markMessage(message, Message.STATUS_OFFERED);
 740				mJingleConnectionManager.createNewConnection(message);
 741			} else {
 742				if (presences.size() == 1) {
 743					String presence = presences.asStringArray()[0];
 744					try {
 745						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 746					} catch (InvalidJidException e) {
 747						return;
 748					}
 749					markMessage(message, Message.STATUS_OFFERED);
 750					mJingleConnectionManager.createNewConnection(message);
 751				}
 752			}
 753		}
 754		if (packet != null) {
 755			if (!account.getXmppConnection().getFeatures().sm()
 756					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 757				markMessage(message, Message.STATUS_SEND);
 758			} else {
 759				markMessage(message, Message.STATUS_UNSEND);
 760			}
 761			sendMessagePacket(account, packet);
 762		}
 763	}
 764
 765	public void fetchRosterFromServer(Account account) {
 766		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 767		if (!"".equals(account.getRosterVersion())) {
 768			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 769					+ ": fetching roster version " + account.getRosterVersion());
 770		} else {
 771			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 772		}
 773		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 774				account.getRosterVersion());
 775		account.getXmppConnection().sendIqPacket(iqPacket,
 776				new OnIqPacketReceived() {
 777
 778					@Override
 779					public void onIqPacketReceived(final Account account,
 780												   IqPacket packet) {
 781						Element query = packet.findChild("query");
 782						if (query != null) {
 783							account.getRoster().markAllAsNotInRoster();
 784							mIqParser.rosterItems(account, query);
 785						}
 786					}
 787				});
 788	}
 789
 790	public void fetchBookmarks(Account account) {
 791		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 792		Element query = iqPacket.query("jabber:iq:private");
 793		query.addChild("storage", "storage:bookmarks");
 794		OnIqPacketReceived callback = new OnIqPacketReceived() {
 795
 796			@Override
 797			public void onIqPacketReceived(Account account, IqPacket packet) {
 798				Element query = packet.query();
 799				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 800				Element storage = query.findChild("storage",
 801						"storage:bookmarks");
 802				if (storage != null) {
 803					for (Element item : storage.getChildren()) {
 804						if (item.getName().equals("conference")) {
 805							Bookmark bookmark = Bookmark.parse(item, account);
 806							bookmarks.add(bookmark);
 807							Conversation conversation = find(bookmark);
 808							if (conversation != null) {
 809								conversation.setBookmark(bookmark);
 810							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 811								conversation = findOrCreateConversation(
 812										account, bookmark.getJid(), true);
 813								conversation.setBookmark(bookmark);
 814								joinMuc(conversation);
 815							}
 816						}
 817					}
 818				}
 819				account.setBookmarks(bookmarks);
 820			}
 821		};
 822		sendIqPacket(account, iqPacket, callback);
 823
 824	}
 825
 826	public void pushBookmarks(Account account) {
 827		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 828		Element query = iqPacket.query("jabber:iq:private");
 829		Element storage = query.addChild("storage", "storage:bookmarks");
 830		for (Bookmark bookmark : account.getBookmarks()) {
 831			storage.addChild(bookmark);
 832		}
 833		sendIqPacket(account, iqPacket, null);
 834	}
 835
 836	private void mergePhoneContactsWithRoster() {
 837		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 838				new OnPhoneContactsLoadedListener() {
 839					@Override
 840					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 841						for (Account account : accounts) {
 842							account.getRoster().clearSystemAccounts();
 843						}
 844						for (Bundle phoneContact : phoneContacts) {
 845							for (Account account : accounts) {
 846								Jid jid;
 847								try {
 848									jid = Jid.fromString(phoneContact.getString("jid"));
 849								} catch (final InvalidJidException e) {
 850									// TODO: Warn if contact import fails here?
 851									break;
 852								}
 853								final Contact contact = account.getRoster()
 854									.getContact(jid);
 855								String systemAccount = phoneContact
 856									.getInt("phoneid")
 857									+ "#"
 858									+ phoneContact.getString("lookup");
 859								contact.setSystemAccount(systemAccount);
 860								contact.setPhotoUri(phoneContact
 861										.getString("photouri"));
 862								contact.setSystemName(phoneContact
 863										.getString("displayname"));
 864								getAvatarService().clear(contact);
 865							}
 866						}
 867					}
 868				});
 869	}
 870
 871	private void initConversations() {
 872		synchronized (this.conversations) {
 873			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 874			for (Account account : this.accounts) {
 875				accountLookupTable.put(account.getUuid(), account);
 876			}
 877			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 878			for (Conversation conv : this.conversations) {
 879				Account account = accountLookupTable.get(conv.getAccountUuid());
 880				conv.setAccount(account);
 881				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 882				checkDeletedFiles(conv);
 883			}
 884		}
 885	}
 886
 887	public List<Conversation> getConversations() {
 888		return this.conversations;
 889	}
 890
 891	private void checkDeletedFiles(Conversation conversation) {
 892		for (Message message : conversation.getMessages()) {
 893			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 894					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 895				if (!getFileBackend().isFileAvailable(message)) {
 896					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 897				}
 898					}
 899		}
 900	}
 901
 902	private void markFileDeleted(String uuid) {
 903		for (Conversation conversation : getConversations()) {
 904			for (Message message : conversation.getMessages()) {
 905				if (message.getType() == Message.TYPE_IMAGE
 906						&& message.getEncryption() != Message.ENCRYPTION_PGP
 907						&& message.getUuid().equals(uuid)) {
 908					if (!getFileBackend().isFileAvailable(message)) {
 909						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 910						updateConversationUi();
 911					}
 912					return;
 913						}
 914			}
 915		}
 916	}
 917
 918	public void populateWithOrderedConversations(final List<Conversation> list) {
 919		populateWithOrderedConversations(list, true);
 920	}
 921
 922	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 923		list.clear();
 924		if (includeConferences) {
 925			list.addAll(getConversations());
 926		} else {
 927			for (Conversation conversation : getConversations()) {
 928				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 929					list.add(conversation);
 930				}
 931			}
 932		}
 933		Collections.sort(list, new Comparator<Conversation>() {
 934			@Override
 935			public int compare(Conversation lhs, Conversation rhs) {
 936				Message left = lhs.getLatestMessage();
 937				Message right = rhs.getLatestMessage();
 938				if (left.getTimeSent() > right.getTimeSent()) {
 939					return -1;
 940				} else if (left.getTimeSent() < right.getTimeSent()) {
 941					return 1;
 942				} else {
 943					return 0;
 944				}
 945			}
 946		});
 947	}
 948
 949	public int loadMoreMessages(Conversation conversation, long timestamp) {
 950		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 951				timestamp);
 952		for (Message message : messages) {
 953			message.setConversation(conversation);
 954		}
 955		conversation.addAll(0, messages);
 956		return messages.size();
 957	}
 958
 959	public List<Account> getAccounts() {
 960		return this.accounts;
 961	}
 962
 963	public Conversation find(List<Conversation> haystack, Contact contact) {
 964		for (Conversation conversation : haystack) {
 965			if (conversation.getContact() == contact) {
 966				return conversation;
 967			}
 968		}
 969		return null;
 970	}
 971
 972	public Conversation find(final List<Conversation> haystack,
 973			final Account account,
 974			final Jid jid) {
 975		if (jid == null ) {
 976			return null;
 977		}
 978		for (Conversation conversation : haystack) {
 979			if ((account == null || conversation.getAccount() == account)
 980					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 981				return conversation;
 982					}
 983		}
 984		return null;
 985	}
 986
 987	public Conversation findOrCreateConversation(final Account account, final Jid jid,
 988			final boolean muc) {
 989		synchronized (this.conversations) {
 990			Conversation conversation = find(account, jid);
 991			if (conversation != null) {
 992				return conversation;
 993			}
 994			conversation = databaseBackend.findConversation(account, jid);
 995			if (conversation != null) {
 996				conversation.setStatus(Conversation.STATUS_AVAILABLE);
 997				conversation.setAccount(account);
 998				if (muc) {
 999					conversation.setMode(Conversation.MODE_MULTI);
1000				} else {
1001					conversation.setMode(Conversation.MODE_SINGLE);
1002				}
1003				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1004				this.databaseBackend.updateConversation(conversation);
1005			} else {
1006				String conversationName;
1007				Contact contact = account.getRoster().getContact(jid);
1008				if (contact != null) {
1009					conversationName = contact.getDisplayName();
1010				} else {
1011					conversationName = jid.getLocalpart();
1012				}
1013				if (muc) {
1014					conversation = new Conversation(conversationName, account, jid,
1015							Conversation.MODE_MULTI);
1016				} else {
1017					conversation = new Conversation(conversationName, account, jid,
1018							Conversation.MODE_SINGLE);
1019				}
1020				this.databaseBackend.createConversation(conversation);
1021			}
1022			this.conversations.add(conversation);
1023			updateConversationUi();
1024			return conversation;
1025		}
1026	}
1027
1028	public void archiveConversation(Conversation conversation) {
1029		synchronized (this.conversations) {
1030			if (conversation.getMode() == Conversation.MODE_MULTI) {
1031				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1032					Bookmark bookmark = conversation.getBookmark();
1033					if (bookmark != null && bookmark.autojoin()) {
1034						bookmark.setAutojoin(false);
1035						pushBookmarks(bookmark.getAccount());
1036					}
1037				}
1038				leaveMuc(conversation);
1039			} else {
1040				conversation.endOtrIfNeeded();
1041			}
1042			this.databaseBackend.updateConversation(conversation);
1043			this.conversations.remove(conversation);
1044			updateConversationUi();
1045		}
1046	}
1047
1048	public void clearConversationHistory(Conversation conversation) {
1049		this.databaseBackend.deleteMessagesInConversation(conversation);
1050		conversation.getMessages().clear();
1051		updateConversationUi();
1052	}
1053
1054	public void createAccount(Account account) {
1055		account.initOtrEngine(this);
1056		databaseBackend.createAccount(account);
1057		this.accounts.add(account);
1058		this.reconnectAccount(account, false);
1059		updateAccountUi();
1060	}
1061
1062	public void updateAccount(Account account) {
1063		this.statusListener.onStatusChanged(account);
1064		databaseBackend.updateAccount(account);
1065		reconnectAccount(account, false);
1066		updateAccountUi();
1067		getNotificationService().updateErrorNotification();
1068	}
1069
1070	public void deleteAccount(Account account) {
1071		synchronized (this.conversations) {
1072			for (Conversation conversation : conversations) {
1073				if (conversation.getAccount() == account) {
1074					if (conversation.getMode() == Conversation.MODE_MULTI) {
1075						leaveMuc(conversation);
1076					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1077						conversation.endOtrIfNeeded();
1078					}
1079					conversations.remove(conversation);
1080				}
1081			}
1082			if (account.getXmppConnection() != null) {
1083				this.disconnect(account, true);
1084			}
1085			databaseBackend.deleteAccount(account);
1086			this.accounts.remove(account);
1087			updateAccountUi();
1088			getNotificationService().updateErrorNotification();
1089		}
1090	}
1091
1092	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1093		synchronized (this) {
1094			if (checkListeners()) {
1095				switchToForeground();
1096			}
1097			this.mOnConversationUpdate = listener;
1098			this.mNotificationService.setIsInForeground(true);
1099			if (this.convChangedListenerCount < 2) {
1100				this.convChangedListenerCount++;
1101			}
1102		}
1103	}
1104
1105	public void removeOnConversationListChangedListener() {
1106		synchronized (this) {
1107			this.convChangedListenerCount--;
1108			if (this.convChangedListenerCount <= 0) {
1109				this.convChangedListenerCount = 0;
1110				this.mOnConversationUpdate = null;
1111				this.mNotificationService.setIsInForeground(false);
1112				if (checkListeners()) {
1113					switchToBackground();
1114				}
1115			}
1116		}
1117	}
1118
1119	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1120		synchronized (this) {
1121			if (checkListeners()) {
1122				switchToForeground();
1123			}
1124			this.mOnAccountUpdate = listener;
1125			if (this.accountChangedListenerCount < 2) {
1126				this.accountChangedListenerCount++;
1127			}
1128		}
1129	}
1130
1131	public void removeOnAccountListChangedListener() {
1132		synchronized (this) {
1133			this.accountChangedListenerCount--;
1134			if (this.accountChangedListenerCount <= 0) {
1135				this.mOnAccountUpdate = null;
1136				this.accountChangedListenerCount = 0;
1137				if (checkListeners()) {
1138					switchToBackground();
1139				}
1140			}
1141		}
1142	}
1143
1144	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1145		synchronized (this) {
1146			if (checkListeners()) {
1147				switchToForeground();
1148			}
1149			this.mOnRosterUpdate = listener;
1150			if (this.rosterChangedListenerCount < 2) {
1151				this.rosterChangedListenerCount++;
1152			}
1153		}
1154	}
1155
1156	public void removeOnRosterUpdateListener() {
1157		synchronized (this) {
1158			this.rosterChangedListenerCount--;
1159			if (this.rosterChangedListenerCount <= 0) {
1160				this.rosterChangedListenerCount = 0;
1161				this.mOnRosterUpdate = null;
1162				if (checkListeners()) {
1163					switchToBackground();
1164				}
1165			}
1166		}
1167	}
1168
1169	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1170		synchronized (this) {
1171			if (checkListeners()) {
1172				switchToForeground();
1173			}
1174			this.mOnMucRosterUpdate = listener;
1175			if (this.mucRosterChangedListenerCount < 2) {
1176				this.mucRosterChangedListenerCount++;
1177			}
1178		}
1179	}
1180
1181	public void removeOnMucRosterUpdateListener() {
1182		synchronized (this) {
1183			this.mucRosterChangedListenerCount--;
1184			if (this.mucRosterChangedListenerCount <= 0) {
1185				this.mucRosterChangedListenerCount = 0;
1186				this.mOnMucRosterUpdate = null;
1187				if (checkListeners()) {
1188					switchToBackground();
1189				}
1190			}
1191		}
1192	}
1193
1194	private boolean checkListeners() {
1195		return (this.mOnAccountUpdate == null
1196				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1197	}
1198
1199	private void switchToForeground() {
1200		for (Account account : getAccounts()) {
1201			if (account.getStatus() == Account.State.ONLINE) {
1202				XmppConnection connection = account.getXmppConnection();
1203				if (connection != null && connection.getFeatures().csi()) {
1204					connection.sendActive();
1205				}
1206			}
1207		}
1208		Log.d(Config.LOGTAG, "app switched into foreground");
1209	}
1210
1211	private void switchToBackground() {
1212		for (Account account : getAccounts()) {
1213			if (account.getStatus() == Account.State.ONLINE) {
1214				XmppConnection connection = account.getXmppConnection();
1215				if (connection != null && connection.getFeatures().csi()) {
1216					connection.sendInactive();
1217				}
1218			}
1219		}
1220		this.mNotificationService.setIsInForeground(false);
1221		Log.d(Config.LOGTAG, "app switched into background");
1222	}
1223
1224	public void connectMultiModeConversations(Account account) {
1225		List<Conversation> conversations = getConversations();
1226		for (Conversation conversation : conversations) {
1227			if ((conversation.getMode() == Conversation.MODE_MULTI)
1228					&& (conversation.getAccount() == account)) {
1229				joinMuc(conversation);
1230					}
1231		}
1232	}
1233
1234	public void joinMuc(Conversation conversation) {
1235		Account account = conversation.getAccount();
1236		account.pendingConferenceJoins.remove(conversation);
1237		account.pendingConferenceLeaves.remove(conversation);
1238		if (account.getStatus() == Account.State.ONLINE) {
1239			final String nick = conversation.getMucOptions().getProposedNick();
1240			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1241			if (joinJid == null) {
1242				return; //safety net
1243			}
1244			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1245			PresencePacket packet = new PresencePacket();
1246			packet.setFrom(conversation.getAccount().getJid());
1247			packet.setTo(joinJid);
1248			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1249			if (conversation.getMucOptions().getPassword() != null) {
1250				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1251			}
1252			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageReceived()));
1253			String sig = account.getPgpSignature();
1254			if (sig != null) {
1255				packet.addChild("status").setContent("online");
1256				packet.addChild("x", "jabber:x:signed").setContent(sig);
1257			}
1258			Log.d(Config.LOGTAG,packet.toString());
1259			sendPresencePacket(account, packet);
1260			if (!joinJid.equals(conversation.getContactJid())) {
1261				conversation.setContactJid(joinJid);
1262				databaseBackend.updateConversation(conversation);
1263			}
1264		} else {
1265			account.pendingConferenceJoins.add(conversation);
1266		}
1267	}
1268
1269	public void providePasswordForMuc(Conversation conversation, String password) {
1270		if (conversation.getMode() == Conversation.MODE_MULTI) {
1271			conversation.getMucOptions().setPassword(password);
1272			if (conversation.getBookmark() != null) {
1273				conversation.getBookmark().setAutojoin(true);
1274				pushBookmarks(conversation.getAccount());
1275			}
1276			databaseBackend.updateConversation(conversation);
1277			joinMuc(conversation);
1278		}
1279	}
1280
1281	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1282		final MucOptions options = conversation.getMucOptions();
1283		final Jid joinJid = options.createJoinJid(nick);
1284		if (options.online()) {
1285			Account account = conversation.getAccount();
1286			options.setOnRenameListener(new OnRenameListener() {
1287
1288				@Override
1289				public void onSuccess() {
1290					conversation.setContactJid(joinJid);
1291					databaseBackend.updateConversation(conversation);
1292					Bookmark bookmark = conversation.getBookmark();
1293					if (bookmark != null) {
1294						bookmark.setNick(nick);
1295						pushBookmarks(bookmark.getAccount());
1296					}
1297					callback.success(conversation);
1298				}
1299
1300				@Override
1301				public void onFailure() {
1302					callback.error(R.string.nick_in_use,conversation);
1303				}
1304			});
1305
1306			PresencePacket packet = new PresencePacket();
1307			packet.setTo(joinJid);
1308			packet.setFrom(conversation.getAccount().getJid());
1309
1310			String sig = account.getPgpSignature();
1311			if (sig != null) {
1312				packet.addChild("status").setContent("online");
1313				packet.addChild("x", "jabber:x:signed").setContent(sig);
1314			}
1315			sendPresencePacket(account, packet);
1316		} else {
1317			conversation.setContactJid(joinJid);
1318			databaseBackend.updateConversation(conversation);
1319			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1320				Bookmark bookmark = conversation.getBookmark();
1321				if (bookmark != null) {
1322					bookmark.setNick(nick);
1323					pushBookmarks(bookmark.getAccount());
1324				}
1325				joinMuc(conversation);
1326			}
1327		}
1328	}
1329
1330	public void leaveMuc(Conversation conversation) {
1331		Account account = conversation.getAccount();
1332		account.pendingConferenceJoins.remove(conversation);
1333		account.pendingConferenceLeaves.remove(conversation);
1334		if (account.getStatus() == Account.State.ONLINE) {
1335			PresencePacket packet = new PresencePacket();
1336			packet.setTo(conversation.getContactJid());
1337			packet.setFrom(conversation.getAccount().getJid());
1338			packet.setAttribute("type", "unavailable");
1339			sendPresencePacket(conversation.getAccount(), packet);
1340			conversation.getMucOptions().setOffline();
1341			conversation.deregisterWithBookmark();
1342			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1343					+ ": leaving muc " + conversation.getContactJid());
1344		} else {
1345			account.pendingConferenceLeaves.add(conversation);
1346		}
1347	}
1348
1349	private String findConferenceServer(final Account account) {
1350		String server;
1351		if (account.getXmppConnection() != null) {
1352			server = account.getXmppConnection().getMucServer();
1353			if (server != null) {
1354				return server;
1355			}
1356		}
1357		for(Account other : getAccounts()) {
1358			if (other != account && other.getXmppConnection() != null) {
1359				server = other.getXmppConnection().getMucServer();
1360				if (server != null) {
1361					return server;
1362				}
1363			}
1364		}
1365		return null;
1366	}
1367
1368	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1369		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1370		if (account.getStatus() == Account.State.ONLINE) {
1371			try {
1372				String server = findConferenceServer(account);
1373				if (server == null) {
1374					if (callback != null) {
1375						callback.error(R.string.no_conference_server_found,null);
1376					}
1377					return;
1378				}
1379				String name = new BigInteger(75,getRNG()).toString(32);
1380				Jid jid = Jid.fromParts(name,server,null);
1381				final Conversation conversation = findOrCreateConversation(account, jid, true);
1382				joinMuc(conversation);
1383				Bundle options = new Bundle();
1384				options.putString("muc#roomconfig_persistentroom", "1");
1385				options.putString("muc#roomconfig_membersonly", "1");
1386				options.putString("muc#roomconfig_publicroom", "0");
1387				options.putString("muc#roomconfig_whois", "anyone");
1388				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1389					@Override
1390					public void onPushSucceeded() {
1391						for(Jid invite : jids) {
1392							invite(conversation,invite);
1393						}
1394						if (callback != null) {
1395							callback.success(conversation);
1396						}
1397					}
1398
1399					@Override
1400					public void onPushFailed() {
1401						if (callback != null) {
1402							callback.error(R.string.conference_creation_failed, conversation);
1403						}
1404					}
1405				});
1406
1407			} catch (InvalidJidException e) {
1408				if (callback != null) {
1409					callback.error(R.string.conference_creation_failed, null);
1410				}
1411			}
1412		} else {
1413			if (callback != null) {
1414				callback.error(R.string.not_connected_try_again,null);
1415			}
1416		}
1417	}
1418
1419	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1420		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1421		request.setTo(conversation.getContactJid().toBareJid());
1422		request.query("http://jabber.org/protocol/muc#owner");
1423		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1424			@Override
1425			public void onIqPacketReceived(Account account, IqPacket packet) {
1426				if (packet.getType() != IqPacket.TYPE_ERROR) {
1427					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1428					for (Field field : data.getFields()) {
1429						if (options.containsKey(field.getName())) {
1430							field.setValue(options.getString(field.getName()));
1431						}
1432					}
1433					data.submit();
1434					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1435					set.setTo(conversation.getContactJid().toBareJid());
1436					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1437					sendIqPacket(account, set, new OnIqPacketReceived() {
1438						@Override
1439						public void onIqPacketReceived(Account account, IqPacket packet) {
1440							if (packet.getType() == IqPacket.TYPE_RESULT) {
1441								if (callback != null) {
1442									callback.onPushSucceeded();
1443								}
1444							} else {
1445								if (callback != null) {
1446									callback.onPushFailed();
1447								}
1448							}
1449						}
1450					});
1451				} else {
1452					if (callback != null) {
1453						callback.onPushFailed();
1454					}
1455				}
1456			}
1457		});
1458	}
1459
1460	public void disconnect(Account account, boolean force) {
1461		if ((account.getStatus() == Account.State.ONLINE)
1462				|| (account.getStatus() == Account.State.DISABLED)) {
1463			if (!force) {
1464				List<Conversation> conversations = getConversations();
1465				for (Conversation conversation : conversations) {
1466					if (conversation.getAccount() == account) {
1467						if (conversation.getMode() == Conversation.MODE_MULTI) {
1468							leaveMuc(conversation);
1469						} else {
1470							if (conversation.endOtrIfNeeded()) {
1471								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1472										+ ": ended otr session with "
1473										+ conversation.getContactJid());
1474							}
1475						}
1476					}
1477				}
1478			}
1479			account.getXmppConnection().disconnect(force);
1480				}
1481	}
1482
1483	@Override
1484	public IBinder onBind(Intent intent) {
1485		return mBinder;
1486	}
1487
1488	public void updateMessage(Message message) {
1489		databaseBackend.updateMessage(message);
1490		updateConversationUi();
1491	}
1492
1493	protected void syncDirtyContacts(Account account) {
1494		for (Contact contact : account.getRoster().getContacts()) {
1495			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1496				pushContactToServer(contact);
1497			}
1498			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1499				deleteContactOnServer(contact);
1500			}
1501		}
1502	}
1503
1504	public void createContact(Contact contact) {
1505		SharedPreferences sharedPref = getPreferences();
1506		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1507		if (autoGrant) {
1508			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1509			contact.setOption(Contact.Options.ASKING);
1510		}
1511		pushContactToServer(contact);
1512	}
1513
1514	public void onOtrSessionEstablished(Conversation conversation) {
1515		Account account = conversation.getAccount();
1516		List<Message> messages = conversation.getMessages();
1517		Session otrSession = conversation.getOtrSession();
1518		Log.d(Config.LOGTAG,
1519				account.getJid().toBareJid() + " otr session established with "
1520				+ conversation.getContactJid() + "/"
1521				+ otrSession.getSessionID().getUserID());
1522		for (Message msg : messages) {
1523			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1524					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1525				SessionID id = otrSession.getSessionID();
1526				try {
1527					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1528				} catch (InvalidJidException e) {
1529					break;
1530				}
1531				if (msg.getType() == Message.TYPE_TEXT) {
1532					MessagePacket outPacket = mMessageGenerator
1533						.generateOtrChat(msg, true);
1534					if (outPacket != null) {
1535						msg.setStatus(Message.STATUS_SEND);
1536						databaseBackend.updateMessage(msg);
1537						sendMessagePacket(account, outPacket);
1538					}
1539				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1540					mJingleConnectionManager.createNewConnection(msg);
1541				}
1542					}
1543		}
1544		updateConversationUi();
1545	}
1546
1547	public boolean renewSymmetricKey(Conversation conversation) {
1548		Account account = conversation.getAccount();
1549		byte[] symmetricKey = new byte[32];
1550		this.mRandom.nextBytes(symmetricKey);
1551		Session otrSession = conversation.getOtrSession();
1552		if (otrSession != null) {
1553			MessagePacket packet = new MessagePacket();
1554			packet.setType(MessagePacket.TYPE_CHAT);
1555			packet.setFrom(account.getJid());
1556			packet.addChild("private", "urn:xmpp:carbons:2");
1557			packet.addChild("no-copy", "urn:xmpp:hints");
1558			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1559					+ otrSession.getSessionID().getUserID());
1560			try {
1561				packet.setBody(otrSession
1562						.transformSending(CryptoHelper.FILETRANSFER
1563							+ CryptoHelper.bytesToHex(symmetricKey)));
1564				sendMessagePacket(account, packet);
1565				conversation.setSymmetricKey(symmetricKey);
1566				return true;
1567			} catch (OtrException e) {
1568				return false;
1569			}
1570		}
1571		return false;
1572	}
1573
1574	public void pushContactToServer(Contact contact) {
1575		contact.resetOption(Contact.Options.DIRTY_DELETE);
1576		contact.setOption(Contact.Options.DIRTY_PUSH);
1577		Account account = contact.getAccount();
1578		if (account.getStatus() == Account.State.ONLINE) {
1579			boolean ask = contact.getOption(Contact.Options.ASKING);
1580			boolean sendUpdates = contact
1581				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1582				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1583			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1584			iq.query("jabber:iq:roster").addChild(contact.asElement());
1585			account.getXmppConnection().sendIqPacket(iq, null);
1586			if (sendUpdates) {
1587				sendPresencePacket(account,
1588						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1589			}
1590			if (ask) {
1591				sendPresencePacket(account,
1592						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1593			}
1594		}
1595	}
1596
1597	public void publishAvatar(Account account, Uri image,
1598			final UiCallback<Avatar> callback) {
1599		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1600		final int size = Config.AVATAR_SIZE;
1601		final Avatar avatar = getFileBackend()
1602			.getPepAvatar(image, size, format);
1603		if (avatar != null) {
1604			avatar.height = size;
1605			avatar.width = size;
1606			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1607				avatar.type = "image/webp";
1608			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1609				avatar.type = "image/jpeg";
1610			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1611				avatar.type = "image/png";
1612			}
1613			if (!getFileBackend().save(avatar)) {
1614				callback.error(R.string.error_saving_avatar, avatar);
1615				return;
1616			}
1617			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1618			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1619
1620				@Override
1621				public void onIqPacketReceived(Account account, IqPacket result) {
1622					if (result.getType() == IqPacket.TYPE_RESULT) {
1623						IqPacket packet = XmppConnectionService.this.mIqGenerator
1624							.publishAvatarMetadata(avatar);
1625						sendIqPacket(account, packet, new OnIqPacketReceived() {
1626
1627							@Override
1628							public void onIqPacketReceived(Account account,
1629									IqPacket result) {
1630								if (result.getType() == IqPacket.TYPE_RESULT) {
1631									if (account.setAvatar(avatar.getFilename())) {
1632										databaseBackend.updateAccount(account);
1633									}
1634									callback.success(avatar);
1635								} else {
1636									callback.error(
1637											R.string.error_publish_avatar_server_reject,
1638											avatar);
1639								}
1640							}
1641						});
1642					} else {
1643						callback.error(
1644								R.string.error_publish_avatar_server_reject,
1645								avatar);
1646					}
1647				}
1648			});
1649		} else {
1650			callback.error(R.string.error_publish_avatar_converting, null);
1651		}
1652	}
1653
1654	public void fetchAvatar(Account account, Avatar avatar) {
1655		fetchAvatar(account, avatar, null);
1656	}
1657
1658	public void fetchAvatar(Account account, final Avatar avatar,
1659			final UiCallback<Avatar> callback) {
1660		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1661		sendIqPacket(account, packet, new OnIqPacketReceived() {
1662
1663			@Override
1664			public void onIqPacketReceived(Account account, IqPacket result) {
1665				final String ERROR = account.getJid().toBareJid()
1666						+ ": fetching avatar for " + avatar.owner + " failed ";
1667				if (result.getType() == IqPacket.TYPE_RESULT) {
1668					avatar.image = mIqParser.avatarData(result);
1669					if (avatar.image != null) {
1670						if (getFileBackend().save(avatar)) {
1671							if (account.getJid().toBareJid().equals(avatar.owner)) {
1672								if (account.setAvatar(avatar.getFilename())) {
1673									databaseBackend.updateAccount(account);
1674								}
1675								getAvatarService().clear(account);
1676								updateConversationUi();
1677								updateAccountUi();
1678							} else {
1679								Contact contact = account.getRoster()
1680										.getContact(avatar.owner);
1681								contact.setAvatar(avatar.getFilename());
1682								getAvatarService().clear(contact);
1683								updateConversationUi();
1684								updateRosterUi();
1685							}
1686							if (callback != null) {
1687								callback.success(avatar);
1688							}
1689							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1690									+ ": succesfully fetched avatar for "
1691									+ avatar.owner);
1692							return;
1693						}
1694					} else {
1695
1696						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1697					}
1698				} else {
1699					Element error = result.findChild("error");
1700					if (error == null) {
1701						Log.d(Config.LOGTAG, ERROR + "(server error)");
1702					} else {
1703						Log.d(Config.LOGTAG, ERROR + error.toString());
1704					}
1705				}
1706				if (callback != null) {
1707					callback.error(0, null);
1708				}
1709
1710			}
1711		});
1712	}
1713
1714	public void checkForAvatar(Account account,
1715			final UiCallback<Avatar> callback) {
1716		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1717		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1718
1719			@Override
1720			public void onIqPacketReceived(Account account, IqPacket packet) {
1721				if (packet.getType() == IqPacket.TYPE_RESULT) {
1722					Element pubsub = packet.findChild("pubsub",
1723							"http://jabber.org/protocol/pubsub");
1724					if (pubsub != null) {
1725						Element items = pubsub.findChild("items");
1726						if (items != null) {
1727							Avatar avatar = Avatar.parseMetadata(items);
1728							if (avatar != null) {
1729								avatar.owner = account.getJid().toBareJid();
1730								if (fileBackend.isAvatarCached(avatar)) {
1731									if (account.setAvatar(avatar.getFilename())) {
1732										databaseBackend.updateAccount(account);
1733									}
1734									getAvatarService().clear(account);
1735									callback.success(avatar);
1736								} else {
1737									fetchAvatar(account, avatar, callback);
1738								}
1739								return;
1740							}
1741						}
1742					}
1743				}
1744				callback.error(0, null);
1745			}
1746		});
1747	}
1748
1749	public void deleteContactOnServer(Contact contact) {
1750		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1751		contact.resetOption(Contact.Options.DIRTY_PUSH);
1752		contact.setOption(Contact.Options.DIRTY_DELETE);
1753		Account account = contact.getAccount();
1754		if (account.getStatus() == Account.State.ONLINE) {
1755			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1756			Element item = iq.query("jabber:iq:roster").addChild("item");
1757			item.setAttribute("jid", contact.getJid().toString());
1758			item.setAttribute("subscription", "remove");
1759			account.getXmppConnection().sendIqPacket(iq, null);
1760		}
1761	}
1762
1763	public void updateConversation(Conversation conversation) {
1764		this.databaseBackend.updateConversation(conversation);
1765	}
1766
1767	public void reconnectAccount(final Account account, final boolean force) {
1768		new Thread(new Runnable() {
1769
1770			@Override
1771			public void run() {
1772				if (account.getXmppConnection() != null) {
1773					disconnect(account, force);
1774				}
1775				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1776					if (account.getXmppConnection() == null) {
1777						account.setXmppConnection(createConnection(account));
1778					}
1779					Thread thread = new Thread(account.getXmppConnection());
1780					thread.start();
1781					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1782							false);
1783				} else {
1784					account.getRoster().clearPresences();
1785					account.setXmppConnection(null);
1786				}
1787			}
1788		}).start();
1789	}
1790
1791	public void invite(Conversation conversation, Jid contact) {
1792		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1793		sendMessagePacket(conversation.getAccount(), packet);
1794	}
1795
1796	public void resetSendingToWaiting(Account account) {
1797		for (Conversation conversation : getConversations()) {
1798			if (conversation.getAccount() == account) {
1799				for (Message message : conversation.getMessages()) {
1800					if (message.getType() != Message.TYPE_IMAGE
1801							&& message.getStatus() == Message.STATUS_UNSEND) {
1802						markMessage(message, Message.STATUS_WAITING);
1803							}
1804				}
1805			}
1806		}
1807	}
1808
1809	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1810			final int status) {
1811		if (uuid == null) {
1812			return false;
1813		} else {
1814			for (Conversation conversation : getConversations()) {
1815				if (conversation.getContactJid().equals(recipient)
1816						&& conversation.getAccount().equals(account)) {
1817					return markMessage(conversation, uuid, status);
1818						}
1819			}
1820			return false;
1821		}
1822	}
1823
1824	public boolean markMessage(Conversation conversation, String uuid,
1825			int status) {
1826		if (uuid == null) {
1827			return false;
1828		} else {
1829			for (Message message : conversation.getMessages()) {
1830				if (uuid.equals(message.getUuid())
1831						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1832							.equals(message.getRemoteMsgId()))) {
1833					markMessage(message, status);
1834					return true;
1835							}
1836			}
1837			return false;
1838		}
1839	}
1840
1841	public void markMessage(Message message, int status) {
1842		if (status == Message.STATUS_SEND_FAILED
1843				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1844					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1845			return;
1846					}
1847		message.setStatus(status);
1848		databaseBackend.updateMessage(message);
1849		updateConversationUi();
1850	}
1851
1852	public SharedPreferences getPreferences() {
1853		return PreferenceManager
1854			.getDefaultSharedPreferences(getApplicationContext());
1855	}
1856
1857	public boolean forceEncryption() {
1858		return getPreferences().getBoolean("force_encryption", false);
1859	}
1860
1861	public boolean confirmMessages() {
1862		return getPreferences().getBoolean("confirm_messages", true);
1863	}
1864
1865	public boolean saveEncryptedMessages() {
1866		return !getPreferences().getBoolean("dont_save_encrypted", false);
1867	}
1868
1869	public boolean indicateReceived() {
1870		return getPreferences().getBoolean("indicate_received", false);
1871	}
1872
1873	public void updateConversationUi() {
1874		if (mOnConversationUpdate != null) {
1875			mOnConversationUpdate.onConversationUpdate();
1876		}
1877	}
1878
1879	public void updateAccountUi() {
1880		if (mOnAccountUpdate != null) {
1881			mOnAccountUpdate.onAccountUpdate();
1882		}
1883	}
1884
1885	public void updateRosterUi() {
1886		if (mOnRosterUpdate != null) {
1887			mOnRosterUpdate.onRosterUpdate();
1888		}
1889	}
1890
1891	public void updateMucRosterUi() {
1892		if (mOnMucRosterUpdate != null) {
1893			mOnMucRosterUpdate.onMucRosterUpdate();
1894		}
1895	}
1896
1897	public Account findAccountByJid(final Jid accountJid) {
1898		for (Account account : this.accounts) {
1899			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1900				return account;
1901			}
1902		}
1903		return null;
1904	}
1905
1906	public Conversation findConversationByUuid(String uuid) {
1907		for (Conversation conversation : getConversations()) {
1908			if (conversation.getUuid().equals(uuid)) {
1909				return conversation;
1910			}
1911		}
1912		return null;
1913	}
1914
1915	public void markRead(Conversation conversation, boolean calledByUi) {
1916		mNotificationService.clear(conversation);
1917		final Message markable = conversation.getLatestMarkableMessage();
1918		conversation.markRead();
1919		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1920			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1921			Account account = conversation.getAccount();
1922			final Jid to = markable.getCounterpart();
1923			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1924			this.sendMessagePacket(conversation.getAccount(),packet);
1925		}
1926		if (!calledByUi) {
1927			updateConversationUi();
1928		}
1929	}
1930
1931	public void failWaitingOtrMessages(Conversation conversation) {
1932		for (Message message : conversation.getMessages()) {
1933			if (message.getEncryption() == Message.ENCRYPTION_OTR
1934					&& message.getStatus() == Message.STATUS_WAITING) {
1935				markMessage(message, Message.STATUS_SEND_FAILED);
1936					}
1937		}
1938	}
1939
1940	public SecureRandom getRNG() {
1941		return this.mRandom;
1942	}
1943
1944	public MemorizingTrustManager getMemorizingTrustManager() {
1945		return this.mMemorizingTrustManager;
1946	}
1947
1948	public PowerManager getPowerManager() {
1949		return this.pm;
1950	}
1951
1952	public LruCache<String, Bitmap> getBitmapCache() {
1953		return this.mBitmapCache;
1954	}
1955
1956	public void syncRosterToDisk(final Account account) {
1957		new Thread(new Runnable() {
1958
1959			@Override
1960			public void run() {
1961				databaseBackend.writeRoster(account.getRoster());
1962			}
1963		}).start();
1964
1965	}
1966
1967	public List<String> getKnownHosts() {
1968		List<String> hosts = new ArrayList<>();
1969		for (Account account : getAccounts()) {
1970			if (!hosts.contains(account.getServer().toString())) {
1971				hosts.add(account.getServer().toString());
1972			}
1973			for (Contact contact : account.getRoster().getContacts()) {
1974				if (contact.showInRoster()) {
1975					final String server = contact.getServer().toString();
1976					if (server != null && !hosts.contains(server)) {
1977						hosts.add(server);
1978					}
1979				}
1980			}
1981		}
1982		return hosts;
1983	}
1984
1985	public List<String> getKnownConferenceHosts() {
1986		ArrayList<String> mucServers = new ArrayList<>();
1987		for (Account account : accounts) {
1988			if (account.getXmppConnection() != null) {
1989				String server = account.getXmppConnection().getMucServer();
1990				if (server != null && !mucServers.contains(server)) {
1991					mucServers.add(server);
1992				}
1993			}
1994		}
1995		return mucServers;
1996	}
1997
1998	public void sendMessagePacket(Account account, MessagePacket packet) {
1999		XmppConnection connection = account.getXmppConnection();
2000		if (connection != null) {
2001			connection.sendMessagePacket(packet);
2002		}
2003	}
2004
2005	public void sendPresencePacket(Account account, PresencePacket packet) {
2006		XmppConnection connection = account.getXmppConnection();
2007		if (connection != null) {
2008			connection.sendPresencePacket(packet);
2009		}
2010	}
2011
2012	public void sendIqPacket(Account account, IqPacket packet,
2013			OnIqPacketReceived callback) {
2014		XmppConnection connection = account.getXmppConnection();
2015		if (connection != null) {
2016			connection.sendIqPacket(packet, callback);
2017		}
2018	}
2019
2020	public MessageGenerator getMessageGenerator() {
2021		return this.mMessageGenerator;
2022	}
2023
2024	public PresenceGenerator getPresenceGenerator() {
2025		return this.mPresenceGenerator;
2026	}
2027
2028	public IqGenerator getIqGenerator() {
2029		return this.mIqGenerator;
2030	}
2031
2032	public JingleConnectionManager getJingleConnectionManager() {
2033		return this.mJingleConnectionManager;
2034	}
2035
2036	public List<Contact> findContacts(Jid jid) {
2037		ArrayList<Contact> contacts = new ArrayList<>();
2038		for (Account account : getAccounts()) {
2039			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2040				Contact contact = account.getRoster().getContactFromRoster(jid);
2041				if (contact != null) {
2042					contacts.add(contact);
2043				}
2044			}
2045		}
2046		return contacts;
2047	}
2048
2049	public NotificationService getNotificationService() {
2050		return this.mNotificationService;
2051	}
2052
2053	public HttpConnectionManager getHttpConnectionManager() {
2054		return this.mHttpConnectionManager;
2055	}
2056
2057	public void resendFailedMessages(Message message) {
2058		List<Message> messages = new ArrayList<>();
2059		Message current = message;
2060		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2061			messages.add(current);
2062			if (current.mergeable(current.next())) {
2063				current = current.next();
2064			} else {
2065				break;
2066			}
2067		}
2068		for (Message msg : messages) {
2069			markMessage(msg, Message.STATUS_WAITING);
2070			this.resendMessage(msg);
2071		}
2072	}
2073
2074	public interface OnConversationUpdate {
2075		public void onConversationUpdate();
2076	}
2077
2078	public interface OnAccountUpdate {
2079		public void onAccountUpdate();
2080	}
2081
2082	public interface OnRosterUpdate {
2083		public void onRosterUpdate();
2084	}
2085
2086	public interface OnMucRosterUpdate {
2087		public void onMucRosterUpdate();
2088	}
2089
2090	private interface OnConferenceOptionsPushed {
2091		public void onPushSucceeded();
2092		public void onPushFailed();
2093	}
2094
2095	public class XmppConnectionBinder extends Binder {
2096		public XmppConnectionService getService() {
2097			return XmppConnectionService.this;
2098		}
2099	}
2100}