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 implements OnPhoneContactsLoadedListener {
  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 MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 145	private OnConversationUpdate mOnConversationUpdate = null;
 146	private Integer convChangedListenerCount = 0;
 147	private OnAccountUpdate mOnAccountUpdate = null;
 148	private OnStatusChanged statusListener = new OnStatusChanged() {
 149
 150		@Override
 151		public void onStatusChanged(Account account) {
 152			XmppConnection connection = account.getXmppConnection();
 153			if (mOnAccountUpdate != null) {
 154				mOnAccountUpdate.onAccountUpdate();
 155			}
 156			if (account.getStatus() == Account.State.ONLINE) {
 157				for (Conversation conversation : account.pendingConferenceLeaves) {
 158					leaveMuc(conversation);
 159				}
 160				for (Conversation conversation : account.pendingConferenceJoins) {
 161					joinMuc(conversation);
 162				}
 163				mJingleConnectionManager.cancelInTransmission();
 164				List<Conversation> conversations = getConversations();
 165				for (Conversation conversation : conversations) {
 166					if (conversation.getAccount() == account) {
 167						conversation.startOtrIfNeeded();
 168						sendUnsendMessages(conversation);
 169					}
 170				}
 171				if (connection != null && connection.getFeatures().csi()) {
 172					if (checkListeners()) {
 173						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 174								+ " sending csi//inactive");
 175						connection.sendInactive();
 176					} else {
 177						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 178								+ " sending csi//active");
 179						connection.sendActive();
 180					}
 181				}
 182				syncDirtyContacts(account);
 183				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 184			} else if (account.getStatus() == Account.State.OFFLINE) {
 185				resetSendingToWaiting(account);
 186				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 187					int timeToReconnect = mRandom.nextInt(50) + 10;
 188					scheduleWakeupCall(timeToReconnect, false);
 189				}
 190			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 191				databaseBackend.updateAccount(account);
 192				reconnectAccount(account, true);
 193			} else if ((account.getStatus() != Account.State.CONNECTING)
 194					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 195				if (connection != null) {
 196					int next = connection.getTimeToNextAttempt();
 197					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 198							+ ": error connecting account. try again in "
 199							+ next + "s for the "
 200							+ (connection.getAttempt() + 1) + " time");
 201					scheduleWakeupCall((int) (next * 1.2), false);
 202				}
 203					}
 204			getNotificationService().updateErrorNotification();
 205		}
 206	};
 207
 208	private int accountChangedListenerCount = 0;
 209	private OnRosterUpdate mOnRosterUpdate = null;
 210	private int rosterChangedListenerCount = 0;
 211	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 212	private int mucRosterChangedListenerCount = 0;
 213	private SecureRandom mRandom;
 214	private FileObserver fileObserver = new FileObserver(
 215			FileBackend.getConversationsImageDirectory()) {
 216
 217		@Override
 218		public void onEvent(int event, String path) {
 219			if (event == FileObserver.DELETE) {
 220				markFileDeleted(path.split("\\.")[0]);
 221			}
 222		}
 223	};
 224	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 225
 226		@Override
 227		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 228			mJingleConnectionManager.deliverPacket(account, packet);
 229		}
 230	};
 231
 232	private OpenPgpServiceConnection pgpServiceConnection;
 233	private PgpEngine mPgpEngine = null;
 234	private Intent pingIntent;
 235	private PendingIntent pendingPingIntent = null;
 236	private WakeLock wakeLock;
 237	private PowerManager pm;
 238	private OnBindListener mOnBindListener = new OnBindListener() {
 239
 240		@Override
 241		public void onBind(final Account account) {
 242			account.getRoster().clearPresences();
 243			account.clearPresences(); // self presences
 244			account.pendingConferenceJoins.clear();
 245			account.pendingConferenceLeaves.clear();
 246			fetchRosterFromServer(account);
 247			fetchBookmarks(account);
 248			sendPresencePacket(account,
 249					mPresenceGenerator.sendPresence(account));
 250			connectMultiModeConversations(account);
 251			updateConversationUi();
 252		}
 253	};
 254
 255	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 256
 257		@Override
 258		public void onMessageAcknowledged(Account account, String uuid) {
 259			for (final Conversation conversation : getConversations()) {
 260				if (conversation.getAccount() == account) {
 261					for (final Message message : conversation.getMessages()) {
 262						final int s = message.getStatus();
 263						if ((s == Message.STATUS_UNSEND || s == Message.STATUS_WAITING) && message.getUuid().equals(uuid)) {
 264							markMessage(message, Message.STATUS_SEND);
 265							if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 266								databaseBackend.updateConversation(conversation);
 267							}
 268							return;
 269						}
 270					}
 271				}
 272			}
 273		}
 274	};
 275	private LruCache<String, Bitmap> mBitmapCache;
 276	private IqGenerator mIqGenerator = new IqGenerator(this);
 277	private Thread mPhoneContactMergerThread;
 278
 279	public PgpEngine getPgpEngine() {
 280		if (pgpServiceConnection.isBound()) {
 281			if (this.mPgpEngine == null) {
 282				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 283							getApplicationContext(),
 284							pgpServiceConnection.getService()), this);
 285			}
 286			return mPgpEngine;
 287		} else {
 288			return null;
 289		}
 290
 291	}
 292
 293	public FileBackend getFileBackend() {
 294		return this.fileBackend;
 295	}
 296
 297	public AvatarService getAvatarService() {
 298		return this.mAvatarService;
 299	}
 300
 301	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 302		final Message message;
 303		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 304			message = new Message(conversation, "",
 305					Message.ENCRYPTION_DECRYPTED);
 306		} else {
 307			message = new Message(conversation, "",
 308					conversation.getNextEncryption(forceEncryption()));
 309		}
 310		message.setCounterpart(conversation.getNextCounterpart());
 311		message.setType(Message.TYPE_FILE);
 312		message.setStatus(Message.STATUS_OFFERED);
 313		String path = getFileBackend().getOriginalPath(uri);
 314		if (path!=null) {
 315			message.setRelativeFilePath(path);
 316			getFileBackend().updateFileParams(message);
 317			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 318				getPgpEngine().encrypt(message, callback);
 319			} else {
 320				callback.success(message);
 321			}
 322		} else {
 323			new Thread(new Runnable() {
 324				@Override
 325				public void run() {
 326					try {
 327						getFileBackend().copyFileToPrivateStorage(message, uri);
 328						getFileBackend().updateFileParams(message);
 329						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 330							getPgpEngine().encrypt(message, callback);
 331						} else {
 332							callback.success(message);
 333						}
 334					} catch (FileBackend.FileCopyException e) {
 335						callback.error(e.getResId(),message);
 336					}
 337				}
 338			}).start();
 339
 340		}
 341	}
 342
 343	public void attachImageToConversation(final Conversation conversation,
 344			final Uri uri, final UiCallback<Message> callback) {
 345		final Message message;
 346		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 347			message = new Message(conversation, "",
 348					Message.ENCRYPTION_DECRYPTED);
 349		} else {
 350			message = new Message(conversation, "",
 351					conversation.getNextEncryption(forceEncryption()));
 352		}
 353		message.setCounterpart(conversation.getNextCounterpart());
 354		message.setType(Message.TYPE_IMAGE);
 355		message.setStatus(Message.STATUS_OFFERED);
 356		new Thread(new Runnable() {
 357
 358			@Override
 359			public void run() {
 360				try {
 361					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 362					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 363						getPgpEngine().encrypt(message, callback);
 364					} else {
 365						callback.success(message);
 366					}
 367				} catch (FileBackend.FileCopyException e) {
 368					callback.error(e.getResId(), message);
 369				}
 370			}
 371		}).start();
 372	}
 373
 374	public Conversation find(Bookmark bookmark) {
 375		return find(bookmark.getAccount(), bookmark.getJid());
 376	}
 377
 378	public Conversation find(final Account account, final Jid jid) {
 379		return find(getConversations(), account, jid);
 380	}
 381
 382	@Override
 383	public int onStartCommand(Intent intent, int flags, int startId) {
 384		if (intent != null && intent.getAction() != null) {
 385			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 386				PhoneHelper.loadPhoneContacts(getApplicationContext(), this);
 387				return START_STICKY;
 388			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 389				logoutAndSave();
 390				return START_NOT_STICKY;
 391			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 392				mNotificationService.clear();
 393			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 394				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 395				toggleForegroundService();
 396			}
 397		}
 398		this.wakeLock.acquire();
 399
 400		for (Account account : accounts) {
 401			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 402				if (!hasInternetConnection()) {
 403					account.setStatus(Account.State.NO_INTERNET);
 404					if (statusListener != null) {
 405						statusListener.onStatusChanged(account);
 406					}
 407				} else {
 408					if (account.getStatus() == Account.State.NO_INTERNET) {
 409						account.setStatus(Account.State.OFFLINE);
 410						if (statusListener != null) {
 411							statusListener.onStatusChanged(account);
 412						}
 413					}
 414					if (account.getStatus() == Account.State.ONLINE) {
 415						long lastReceived = account.getXmppConnection()
 416							.getLastPacketReceived();
 417						long lastSent = account.getXmppConnection()
 418							.getLastPingSent();
 419						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 420							Log.d(Config.LOGTAG, account.getJid()
 421									+ ": ping timeout");
 422							this.reconnectAccount(account, true);
 423						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 424							account.getXmppConnection().sendPing();
 425							this.scheduleWakeupCall(2, false);
 426						}
 427					} else if (account.getStatus() == Account.State.OFFLINE) {
 428						if (account.getXmppConnection() == null) {
 429							account.setXmppConnection(this
 430									.createConnection(account));
 431						}
 432						new Thread(account.getXmppConnection()).start();
 433					} else if ((account.getStatus() == Account.State.CONNECTING)
 434							&& ((SystemClock.elapsedRealtime() - account
 435									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 436						Log.d(Config.LOGTAG, account.getJid()
 437								+ ": time out during connect reconnecting");
 438						reconnectAccount(account, true);
 439					} else {
 440						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 441							reconnectAccount(account, true);
 442						}
 443					}
 444					// in any case. reschedule wakup call
 445					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 446				}
 447				if (mOnAccountUpdate != null) {
 448					mOnAccountUpdate.onAccountUpdate();
 449				}
 450			}
 451		}
 452		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 453			if (!pm.isScreenOn()) {
 454			removeStaleListeners();
 455			}*/
 456		if (wakeLock.isHeld()) {
 457			try {
 458				wakeLock.release();
 459			} catch (final RuntimeException ignored) {
 460			}
 461		}
 462		return START_STICKY;
 463	}
 464
 465	public boolean hasInternetConnection() {
 466		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 467			.getSystemService(Context.CONNECTIVITY_SERVICE);
 468		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 469		return activeNetwork != null && activeNetwork.isConnected();
 470	}
 471
 472	@SuppressLint("TrulyRandom")
 473	@Override
 474	public void onCreate() {
 475		ExceptionHelper.init(getApplicationContext());
 476		PRNGFixes.apply();
 477		this.mRandom = new SecureRandom();
 478		this.mMemorizingTrustManager = new MemorizingTrustManager(
 479				getApplicationContext());
 480
 481		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 482		int cacheSize = maxMemory / 8;
 483		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 484			@Override
 485			protected int sizeOf(String key, Bitmap bitmap) {
 486				return bitmap.getByteCount() / 1024;
 487			}
 488		};
 489
 490		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 491		this.accounts = databaseBackend.getAccounts();
 492
 493		for (Account account : this.accounts) {
 494			account.initOtrEngine(this);
 495			this.databaseBackend.readRoster(account.getRoster());
 496		}
 497		initConversations();
 498		PhoneHelper.loadPhoneContacts(getApplicationContext(),this);
 499
 500		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 501		this.fileObserver.startWatching();
 502		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 503		this.pgpServiceConnection.bindToService();
 504
 505		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 506		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 507		toggleForegroundService();
 508	}
 509
 510	public void toggleForegroundService() {
 511		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 512			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 513		} else {
 514			stopForeground(true);
 515		}
 516	}
 517
 518	@Override
 519	public void onTaskRemoved(Intent rootIntent) {
 520		super.onTaskRemoved(rootIntent);
 521		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 522			this.logoutAndSave();
 523		}
 524	}
 525
 526	private void logoutAndSave() {
 527		for (Account account : accounts) {
 528			databaseBackend.writeRoster(account.getRoster());
 529			if (account.getXmppConnection() != null) {
 530				disconnect(account, false);
 531			}
 532		}
 533		Context context = getApplicationContext();
 534		AlarmManager alarmManager = (AlarmManager) context
 535			.getSystemService(Context.ALARM_SERVICE);
 536		Intent intent = new Intent(context, EventReceiver.class);
 537		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 538		Log.d(Config.LOGTAG, "good bye");
 539		stopSelf();
 540	}
 541
 542	protected void scheduleWakeupCall(int seconds, boolean ping) {
 543		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 544		Context context = getApplicationContext();
 545		AlarmManager alarmManager = (AlarmManager) context
 546			.getSystemService(Context.ALARM_SERVICE);
 547
 548		if (ping) {
 549			if (this.pingIntent == null) {
 550				this.pingIntent = new Intent(context, EventReceiver.class);
 551				this.pingIntent.setAction("ping");
 552				this.pingIntent.putExtra("time", timeToWake);
 553				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 554						this.pingIntent, 0);
 555				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 556						timeToWake, pendingPingIntent);
 557			} else {
 558				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 559				if (scheduledTime < SystemClock.elapsedRealtime()
 560						|| (scheduledTime > timeToWake)) {
 561					this.pingIntent.putExtra("time", timeToWake);
 562					alarmManager.cancel(this.pendingPingIntent);
 563					this.pendingPingIntent = PendingIntent.getBroadcast(
 564							context, 0, this.pingIntent, 0);
 565					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 566							timeToWake, pendingPingIntent);
 567						}
 568			}
 569		} else {
 570			Intent intent = new Intent(context, EventReceiver.class);
 571			intent.setAction("ping_check");
 572			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 573					intent, 0);
 574			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 575					alarmIntent);
 576		}
 577
 578	}
 579
 580	public XmppConnection createConnection(Account account) {
 581		SharedPreferences sharedPref = getPreferences();
 582		account.setResource(sharedPref.getString("resource", "mobile")
 583				.toLowerCase(Locale.getDefault()));
 584		XmppConnection connection = new XmppConnection(account, this);
 585		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 586		connection.setOnStatusChangedListener(this.statusListener);
 587		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 588		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 589		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 590		connection.setOnBindListener(this.mOnBindListener);
 591		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 592		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 593		return connection;
 594	}
 595
 596	public void sendMessage(Message message) {
 597		Account account = message.getConversation().getAccount();
 598		account.deactivateGracePeriod();
 599		Conversation conv = message.getConversation();
 600		MessagePacket packet = null;
 601		boolean saveInDb = true;
 602		boolean send = false;
 603		if (account.getStatus() == Account.State.ONLINE
 604				&& account.getXmppConnection() != null) {
 605			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 606				if (message.getCounterpart() != null) {
 607					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 608						if (!conv.hasValidOtrSession()) {
 609							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 610							message.setStatus(Message.STATUS_WAITING);
 611						} else if (conv.hasValidOtrSession()
 612								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 613							mJingleConnectionManager
 614								.createNewConnection(message);
 615								}
 616					} else {
 617						mJingleConnectionManager.createNewConnection(message);
 618					}
 619				} else {
 620					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 621						conv.startOtrIfNeeded();
 622					}
 623					message.setStatus(Message.STATUS_WAITING);
 624				}
 625			} else {
 626				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 627					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 628						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 629						message.setStatus(Message.STATUS_WAITING);
 630					} else if (conv.hasValidOtrSession()) {
 631						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 632							packet = mMessageGenerator.generateOtrChat(message);
 633							send = true;
 634						} else {
 635							message.setStatus(Message.STATUS_WAITING);
 636							conv.startOtrIfNeeded();
 637						}
 638					} else {
 639						message.setStatus(Message.STATUS_WAITING);
 640					}
 641				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 642					message.getConversation().endOtrIfNeeded();
 643					failWaitingOtrMessages(message.getConversation());
 644					packet = mMessageGenerator.generatePgpChat(message);
 645					send = true;
 646				} else {
 647					message.getConversation().endOtrIfNeeded();
 648					failWaitingOtrMessages(message.getConversation());
 649					packet = mMessageGenerator.generateChat(message);
 650					send = true;
 651				}
 652			}
 653			if (!account.getXmppConnection().getFeatures().sm()
 654					&& conv.getMode() != Conversation.MODE_MULTI) {
 655				message.setStatus(Message.STATUS_SEND);
 656					}
 657		} else {
 658			message.setStatus(Message.STATUS_WAITING);
 659			if (message.getType() == Message.TYPE_TEXT) {
 660				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 661					String pgpBody = message.getEncryptedBody();
 662					String decryptedBody = message.getBody();
 663					message.setBody(pgpBody);
 664					message.setEncryption(Message.ENCRYPTION_PGP);
 665					databaseBackend.createMessage(message);
 666					saveInDb = false;
 667					message.setBody(decryptedBody);
 668					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 669				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 670					if (!conv.hasValidOtrSession()
 671							&& message.getCounterpart() != null) {
 672						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 673							}
 674				}
 675			}
 676
 677		}
 678		conv.add(message);
 679		if (saveInDb) {
 680			if (message.getEncryption() == Message.ENCRYPTION_NONE
 681					|| saveEncryptedMessages()) {
 682				databaseBackend.createMessage(message);
 683					}
 684		}
 685		if ((send) && (packet != null)) {
 686			sendMessagePacket(account, packet);
 687		}
 688		updateConversationUi();
 689	}
 690
 691	private void sendUnsendMessages(Conversation conversation) {
 692		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 693			int status = conversation.getMessages().get(i).getStatus();
 694			if (status == Message.STATUS_WAITING) {
 695				resendMessage(conversation.getMessages().get(i));
 696			}
 697		}
 698	}
 699
 700	private void resendMessage(Message message) {
 701		Account account = message.getConversation().getAccount();
 702		MessagePacket packet = null;
 703		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 704			Presences presences = message.getConversation().getContact()
 705				.getPresences();
 706			if (!message.getConversation().hasValidOtrSession()) {
 707				if ((message.getCounterpart() != null)
 708						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 709					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 710				} else {
 711					if (presences.size() == 1) {
 712						String presence = presences.asStringArray()[0];
 713						message.getConversation().startOtrSession(presence, true);
 714					}
 715				}
 716			} else {
 717				if (message.getConversation().getOtrSession()
 718						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 719					try {
 720						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 721						if (message.getType() == Message.TYPE_TEXT) {
 722							packet = mMessageGenerator.generateOtrChat(message,
 723									true);
 724						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 725							mJingleConnectionManager.createNewConnection(message);
 726						}
 727					} catch (InvalidJidException e) {
 728
 729					}
 730						}
 731			}
 732		} else if (message.getType() == Message.TYPE_TEXT) {
 733			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 734				packet = mMessageGenerator.generateChat(message, true);
 735			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 736					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 737				packet = mMessageGenerator.generatePgpChat(message, true);
 738					}
 739		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 740			Contact contact = message.getConversation().getContact();
 741			Presences presences = contact.getPresences();
 742			if ((message.getCounterpart() != null)
 743					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 744				markMessage(message, Message.STATUS_OFFERED);
 745				mJingleConnectionManager.createNewConnection(message);
 746			} else {
 747				if (presences.size() == 1) {
 748					String presence = presences.asStringArray()[0];
 749					try {
 750						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 751					} catch (InvalidJidException e) {
 752						return;
 753					}
 754					markMessage(message, Message.STATUS_OFFERED);
 755					mJingleConnectionManager.createNewConnection(message);
 756				}
 757			}
 758		}
 759		if (packet != null) {
 760			if (!account.getXmppConnection().getFeatures().sm()
 761					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 762				markMessage(message, Message.STATUS_SEND);
 763			} else {
 764				markMessage(message, Message.STATUS_UNSEND);
 765			}
 766			sendMessagePacket(account, packet);
 767		}
 768	}
 769
 770	public void fetchRosterFromServer(Account account) {
 771		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 772		if (!"".equals(account.getRosterVersion())) {
 773			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 774					+ ": fetching roster version " + account.getRosterVersion());
 775		} else {
 776			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 777		}
 778		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 779				account.getRosterVersion());
 780		account.getXmppConnection().sendIqPacket(iqPacket,
 781				new OnIqPacketReceived() {
 782
 783					@Override
 784					public void onIqPacketReceived(final Account account,
 785												   IqPacket packet) {
 786						Element query = packet.findChild("query");
 787						if (query != null) {
 788							account.getRoster().markAllAsNotInRoster();
 789							mIqParser.rosterItems(account, query);
 790						}
 791					}
 792				});
 793	}
 794
 795	public void fetchBookmarks(Account account) {
 796		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 797		Element query = iqPacket.query("jabber:iq:private");
 798		query.addChild("storage", "storage:bookmarks");
 799		OnIqPacketReceived callback = new OnIqPacketReceived() {
 800
 801			@Override
 802			public void onIqPacketReceived(Account account, IqPacket packet) {
 803				Element query = packet.query();
 804				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 805				Element storage = query.findChild("storage",
 806						"storage:bookmarks");
 807				if (storage != null) {
 808					for (Element item : storage.getChildren()) {
 809						if (item.getName().equals("conference")) {
 810							Bookmark bookmark = Bookmark.parse(item, account);
 811							bookmarks.add(bookmark);
 812							Conversation conversation = find(bookmark);
 813							if (conversation != null) {
 814								conversation.setBookmark(bookmark);
 815							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 816								conversation = findOrCreateConversation(
 817										account, bookmark.getJid(), true);
 818								conversation.setBookmark(bookmark);
 819								joinMuc(conversation);
 820							}
 821						}
 822					}
 823				}
 824				account.setBookmarks(bookmarks);
 825			}
 826		};
 827		sendIqPacket(account, iqPacket, callback);
 828
 829	}
 830
 831	public void pushBookmarks(Account account) {
 832		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 833		Element query = iqPacket.query("jabber:iq:private");
 834		Element storage = query.addChild("storage", "storage:bookmarks");
 835		for (Bookmark bookmark : account.getBookmarks()) {
 836			storage.addChild(bookmark);
 837		}
 838		sendIqPacket(account, iqPacket, null);
 839	}
 840
 841	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 842		if (mPhoneContactMergerThread != null) {
 843			mPhoneContactMergerThread.interrupt();
 844		}
 845		mPhoneContactMergerThread = new Thread(new Runnable() {
 846			@Override
 847			public void run() {
 848				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 849				for (Account account : accounts) {
 850					account.getRoster().clearSystemAccounts();
 851					for (Bundle phoneContact : phoneContacts) {
 852						if (Thread.interrupted()) {
 853							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 854							return;
 855						}
 856						Jid jid;
 857						try {
 858							jid = Jid.fromString(phoneContact.getString("jid"));
 859						} catch (final InvalidJidException e) {
 860							break;
 861						}
 862						final Contact contact = account.getRoster()
 863								.getContact(jid);
 864						String systemAccount = phoneContact.getInt("phoneid")
 865								+ "#"
 866								+ phoneContact.getString("lookup");
 867						contact.setSystemAccount(systemAccount);
 868						contact.setPhotoUri(phoneContact.getString("photouri"));
 869						getAvatarService().clear(contact);
 870						contact.setSystemName(phoneContact.getString("displayname"));
 871					}
 872				}
 873				Log.d(Config.LOGTAG,"finished merging phone contacts");
 874				updateAccountUi();
 875			}
 876		});
 877		mPhoneContactMergerThread.start();
 878	}
 879
 880	private void initConversations() {
 881		synchronized (this.conversations) {
 882			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 883			for (Account account : this.accounts) {
 884				accountLookupTable.put(account.getUuid(), account);
 885			}
 886			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 887			for (Conversation conv : this.conversations) {
 888				Account account = accountLookupTable.get(conv.getAccountUuid());
 889				conv.setAccount(account);
 890				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 891				checkDeletedFiles(conv);
 892			}
 893		}
 894	}
 895
 896	public List<Conversation> getConversations() {
 897		return this.conversations;
 898	}
 899
 900	private void checkDeletedFiles(Conversation conversation) {
 901		for (Message message : conversation.getMessages()) {
 902			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 903					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 904				if (!getFileBackend().isFileAvailable(message)) {
 905					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 906				}
 907					}
 908		}
 909	}
 910
 911	private void markFileDeleted(String uuid) {
 912		for (Conversation conversation : getConversations()) {
 913			for (Message message : conversation.getMessages()) {
 914				if (message.getType() == Message.TYPE_IMAGE
 915						&& message.getEncryption() != Message.ENCRYPTION_PGP
 916						&& message.getUuid().equals(uuid)) {
 917					if (!getFileBackend().isFileAvailable(message)) {
 918						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 919						updateConversationUi();
 920					}
 921					return;
 922						}
 923			}
 924		}
 925	}
 926
 927	public void populateWithOrderedConversations(final List<Conversation> list) {
 928		populateWithOrderedConversations(list, true);
 929	}
 930
 931	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 932		list.clear();
 933		if (includeConferences) {
 934			list.addAll(getConversations());
 935		} else {
 936			for (Conversation conversation : getConversations()) {
 937				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 938					list.add(conversation);
 939				}
 940			}
 941		}
 942		Collections.sort(list, new Comparator<Conversation>() {
 943			@Override
 944			public int compare(Conversation lhs, Conversation rhs) {
 945				Message left = lhs.getLatestMessage();
 946				Message right = rhs.getLatestMessage();
 947				if (left.getTimeSent() > right.getTimeSent()) {
 948					return -1;
 949				} else if (left.getTimeSent() < right.getTimeSent()) {
 950					return 1;
 951				} else {
 952					return 0;
 953				}
 954			}
 955		});
 956	}
 957
 958	public int loadMoreMessages(Conversation conversation, long timestamp) {
 959		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 960				timestamp);
 961		for (Message message : messages) {
 962			message.setConversation(conversation);
 963		}
 964		conversation.addAll(0, messages);
 965		return messages.size();
 966	}
 967
 968	public List<Account> getAccounts() {
 969		return this.accounts;
 970	}
 971
 972	public Conversation find(List<Conversation> haystack, Contact contact) {
 973		for (Conversation conversation : haystack) {
 974			if (conversation.getContact() == contact) {
 975				return conversation;
 976			}
 977		}
 978		return null;
 979	}
 980
 981	public Conversation find(final List<Conversation> haystack,
 982			final Account account,
 983			final Jid jid) {
 984		if (jid == null ) {
 985			return null;
 986		}
 987		for (Conversation conversation : haystack) {
 988			if ((account == null || conversation.getAccount() == account)
 989					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 990				return conversation;
 991					}
 992		}
 993		return null;
 994	}
 995
 996	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
 997		return this.findOrCreateConversation(account,jid,muc,null);
 998	}
 999
1000	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1001		synchronized (this.conversations) {
1002			Conversation conversation = find(account, jid);
1003			if (conversation != null) {
1004				return conversation;
1005			}
1006			conversation = databaseBackend.findConversation(account, jid);
1007			if (conversation != null) {
1008				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1009				conversation.setAccount(account);
1010				if (muc) {
1011					conversation.setMode(Conversation.MODE_MULTI);
1012				} else {
1013					conversation.setMode(Conversation.MODE_SINGLE);
1014				}
1015				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1016				this.databaseBackend.updateConversation(conversation);
1017			} else {
1018				String conversationName;
1019				Contact contact = account.getRoster().getContact(jid);
1020				if (contact != null) {
1021					conversationName = contact.getDisplayName();
1022				} else {
1023					conversationName = jid.getLocalpart();
1024				}
1025				if (muc) {
1026					conversation = new Conversation(conversationName, account, jid,
1027							Conversation.MODE_MULTI);
1028				} else {
1029					conversation = new Conversation(conversationName, account, jid,
1030							Conversation.MODE_SINGLE);
1031				}
1032				this.databaseBackend.createConversation(conversation);
1033			}
1034			if (query == null) {
1035				this.mMessageArchiveService.query(conversation);
1036			} else {
1037				if (query.getConversation() == null) {
1038					this.mMessageArchiveService.query(conversation,query.getStart());
1039				}
1040			}
1041			this.conversations.add(conversation);
1042			updateConversationUi();
1043			return conversation;
1044		}
1045	}
1046
1047	public void archiveConversation(Conversation conversation) {
1048		synchronized (this.conversations) {
1049			if (conversation.getMode() == Conversation.MODE_MULTI) {
1050				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1051					Bookmark bookmark = conversation.getBookmark();
1052					if (bookmark != null && bookmark.autojoin()) {
1053						bookmark.setAutojoin(false);
1054						pushBookmarks(bookmark.getAccount());
1055					}
1056				}
1057				leaveMuc(conversation);
1058			} else {
1059				conversation.endOtrIfNeeded();
1060			}
1061			this.databaseBackend.updateConversation(conversation);
1062			this.conversations.remove(conversation);
1063			updateConversationUi();
1064		}
1065	}
1066
1067	public void clearConversationHistory(Conversation conversation) {
1068		this.databaseBackend.deleteMessagesInConversation(conversation);
1069		conversation.getMessages().clear();
1070		updateConversationUi();
1071	}
1072
1073	public void createAccount(Account account) {
1074		account.initOtrEngine(this);
1075		databaseBackend.createAccount(account);
1076		this.accounts.add(account);
1077		this.reconnectAccount(account, false);
1078		updateAccountUi();
1079	}
1080
1081	public void updateAccount(Account account) {
1082		this.statusListener.onStatusChanged(account);
1083		databaseBackend.updateAccount(account);
1084		reconnectAccount(account, false);
1085		updateAccountUi();
1086		getNotificationService().updateErrorNotification();
1087	}
1088
1089	public void deleteAccount(Account account) {
1090		synchronized (this.conversations) {
1091			for (Conversation conversation : conversations) {
1092				if (conversation.getAccount() == account) {
1093					if (conversation.getMode() == Conversation.MODE_MULTI) {
1094						leaveMuc(conversation);
1095					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1096						conversation.endOtrIfNeeded();
1097					}
1098					conversations.remove(conversation);
1099				}
1100			}
1101			if (account.getXmppConnection() != null) {
1102				this.disconnect(account, true);
1103			}
1104			databaseBackend.deleteAccount(account);
1105			this.accounts.remove(account);
1106			updateAccountUi();
1107			getNotificationService().updateErrorNotification();
1108		}
1109	}
1110
1111	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1112		synchronized (this) {
1113			if (checkListeners()) {
1114				switchToForeground();
1115			}
1116			this.mOnConversationUpdate = listener;
1117			this.mNotificationService.setIsInForeground(true);
1118			if (this.convChangedListenerCount < 2) {
1119				this.convChangedListenerCount++;
1120			}
1121		}
1122	}
1123
1124	public void removeOnConversationListChangedListener() {
1125		synchronized (this) {
1126			this.convChangedListenerCount--;
1127			if (this.convChangedListenerCount <= 0) {
1128				this.convChangedListenerCount = 0;
1129				this.mOnConversationUpdate = null;
1130				this.mNotificationService.setIsInForeground(false);
1131				if (checkListeners()) {
1132					switchToBackground();
1133				}
1134			}
1135		}
1136	}
1137
1138	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1139		synchronized (this) {
1140			if (checkListeners()) {
1141				switchToForeground();
1142			}
1143			this.mOnAccountUpdate = listener;
1144			if (this.accountChangedListenerCount < 2) {
1145				this.accountChangedListenerCount++;
1146			}
1147		}
1148	}
1149
1150	public void removeOnAccountListChangedListener() {
1151		synchronized (this) {
1152			this.accountChangedListenerCount--;
1153			if (this.accountChangedListenerCount <= 0) {
1154				this.mOnAccountUpdate = null;
1155				this.accountChangedListenerCount = 0;
1156				if (checkListeners()) {
1157					switchToBackground();
1158				}
1159			}
1160		}
1161	}
1162
1163	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1164		synchronized (this) {
1165			if (checkListeners()) {
1166				switchToForeground();
1167			}
1168			this.mOnRosterUpdate = listener;
1169			if (this.rosterChangedListenerCount < 2) {
1170				this.rosterChangedListenerCount++;
1171			}
1172		}
1173	}
1174
1175	public void removeOnRosterUpdateListener() {
1176		synchronized (this) {
1177			this.rosterChangedListenerCount--;
1178			if (this.rosterChangedListenerCount <= 0) {
1179				this.rosterChangedListenerCount = 0;
1180				this.mOnRosterUpdate = null;
1181				if (checkListeners()) {
1182					switchToBackground();
1183				}
1184			}
1185		}
1186	}
1187
1188	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1189		synchronized (this) {
1190			if (checkListeners()) {
1191				switchToForeground();
1192			}
1193			this.mOnMucRosterUpdate = listener;
1194			if (this.mucRosterChangedListenerCount < 2) {
1195				this.mucRosterChangedListenerCount++;
1196			}
1197		}
1198	}
1199
1200	public void removeOnMucRosterUpdateListener() {
1201		synchronized (this) {
1202			this.mucRosterChangedListenerCount--;
1203			if (this.mucRosterChangedListenerCount <= 0) {
1204				this.mucRosterChangedListenerCount = 0;
1205				this.mOnMucRosterUpdate = null;
1206				if (checkListeners()) {
1207					switchToBackground();
1208				}
1209			}
1210		}
1211	}
1212
1213	private boolean checkListeners() {
1214		return (this.mOnAccountUpdate == null
1215				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1216	}
1217
1218	private void switchToForeground() {
1219		for (Account account : getAccounts()) {
1220			if (account.getStatus() == Account.State.ONLINE) {
1221				XmppConnection connection = account.getXmppConnection();
1222				if (connection != null && connection.getFeatures().csi()) {
1223					connection.sendActive();
1224				}
1225			}
1226		}
1227		Log.d(Config.LOGTAG, "app switched into foreground");
1228	}
1229
1230	private void switchToBackground() {
1231		for (Account account : getAccounts()) {
1232			if (account.getStatus() == Account.State.ONLINE) {
1233				XmppConnection connection = account.getXmppConnection();
1234				if (connection != null && connection.getFeatures().csi()) {
1235					connection.sendInactive();
1236				}
1237			}
1238		}
1239		this.mNotificationService.setIsInForeground(false);
1240		Log.d(Config.LOGTAG, "app switched into background");
1241	}
1242
1243	public void connectMultiModeConversations(Account account) {
1244		List<Conversation> conversations = getConversations();
1245		for (Conversation conversation : conversations) {
1246			if ((conversation.getMode() == Conversation.MODE_MULTI)
1247					&& (conversation.getAccount() == account)) {
1248				joinMuc(conversation);
1249					}
1250		}
1251	}
1252
1253	public void joinMuc(Conversation conversation) {
1254		Account account = conversation.getAccount();
1255		account.pendingConferenceJoins.remove(conversation);
1256		account.pendingConferenceLeaves.remove(conversation);
1257		if (account.getStatus() == Account.State.ONLINE) {
1258			final String nick = conversation.getMucOptions().getProposedNick();
1259			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1260			if (joinJid == null) {
1261				return; //safety net
1262			}
1263			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1264			PresencePacket packet = new PresencePacket();
1265			packet.setFrom(conversation.getAccount().getJid());
1266			packet.setTo(joinJid);
1267			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1268			if (conversation.getMucOptions().getPassword() != null) {
1269				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1270			}
1271			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1272			String sig = account.getPgpSignature();
1273			if (sig != null) {
1274				packet.addChild("status").setContent("online");
1275				packet.addChild("x", "jabber:x:signed").setContent(sig);
1276			}
1277			sendPresencePacket(account, packet);
1278			if (!joinJid.equals(conversation.getContactJid())) {
1279				conversation.setContactJid(joinJid);
1280				databaseBackend.updateConversation(conversation);
1281			}
1282		} else {
1283			account.pendingConferenceJoins.add(conversation);
1284		}
1285	}
1286
1287	public void providePasswordForMuc(Conversation conversation, String password) {
1288		if (conversation.getMode() == Conversation.MODE_MULTI) {
1289			conversation.getMucOptions().setPassword(password);
1290			if (conversation.getBookmark() != null) {
1291				conversation.getBookmark().setAutojoin(true);
1292				pushBookmarks(conversation.getAccount());
1293			}
1294			databaseBackend.updateConversation(conversation);
1295			joinMuc(conversation);
1296		}
1297	}
1298
1299	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1300		final MucOptions options = conversation.getMucOptions();
1301		final Jid joinJid = options.createJoinJid(nick);
1302		if (options.online()) {
1303			Account account = conversation.getAccount();
1304			options.setOnRenameListener(new OnRenameListener() {
1305
1306				@Override
1307				public void onSuccess() {
1308					conversation.setContactJid(joinJid);
1309					databaseBackend.updateConversation(conversation);
1310					Bookmark bookmark = conversation.getBookmark();
1311					if (bookmark != null) {
1312						bookmark.setNick(nick);
1313						pushBookmarks(bookmark.getAccount());
1314					}
1315					callback.success(conversation);
1316				}
1317
1318				@Override
1319				public void onFailure() {
1320					callback.error(R.string.nick_in_use, conversation);
1321				}
1322			});
1323
1324			PresencePacket packet = new PresencePacket();
1325			packet.setTo(joinJid);
1326			packet.setFrom(conversation.getAccount().getJid());
1327
1328			String sig = account.getPgpSignature();
1329			if (sig != null) {
1330				packet.addChild("status").setContent("online");
1331				packet.addChild("x", "jabber:x:signed").setContent(sig);
1332			}
1333			sendPresencePacket(account, packet);
1334		} else {
1335			conversation.setContactJid(joinJid);
1336			databaseBackend.updateConversation(conversation);
1337			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1338				Bookmark bookmark = conversation.getBookmark();
1339				if (bookmark != null) {
1340					bookmark.setNick(nick);
1341					pushBookmarks(bookmark.getAccount());
1342				}
1343				joinMuc(conversation);
1344			}
1345		}
1346	}
1347
1348	public void leaveMuc(Conversation conversation) {
1349		Account account = conversation.getAccount();
1350		account.pendingConferenceJoins.remove(conversation);
1351		account.pendingConferenceLeaves.remove(conversation);
1352		if (account.getStatus() == Account.State.ONLINE) {
1353			PresencePacket packet = new PresencePacket();
1354			packet.setTo(conversation.getContactJid());
1355			packet.setFrom(conversation.getAccount().getJid());
1356			packet.setAttribute("type", "unavailable");
1357			sendPresencePacket(conversation.getAccount(), packet);
1358			conversation.getMucOptions().setOffline();
1359			conversation.deregisterWithBookmark();
1360			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1361					+ ": leaving muc " + conversation.getContactJid());
1362		} else {
1363			account.pendingConferenceLeaves.add(conversation);
1364		}
1365	}
1366
1367	private String findConferenceServer(final Account account) {
1368		String server;
1369		if (account.getXmppConnection() != null) {
1370			server = account.getXmppConnection().getMucServer();
1371			if (server != null) {
1372				return server;
1373			}
1374		}
1375		for(Account other : getAccounts()) {
1376			if (other != account && other.getXmppConnection() != null) {
1377				server = other.getXmppConnection().getMucServer();
1378				if (server != null) {
1379					return server;
1380				}
1381			}
1382		}
1383		return null;
1384	}
1385
1386	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1387		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1388		if (account.getStatus() == Account.State.ONLINE) {
1389			try {
1390				String server = findConferenceServer(account);
1391				if (server == null) {
1392					if (callback != null) {
1393						callback.error(R.string.no_conference_server_found,null);
1394					}
1395					return;
1396				}
1397				String name = new BigInteger(75,getRNG()).toString(32);
1398				Jid jid = Jid.fromParts(name,server,null);
1399				final Conversation conversation = findOrCreateConversation(account, jid, true);
1400				joinMuc(conversation);
1401				Bundle options = new Bundle();
1402				options.putString("muc#roomconfig_persistentroom", "1");
1403				options.putString("muc#roomconfig_membersonly", "1");
1404				options.putString("muc#roomconfig_publicroom", "0");
1405				options.putString("muc#roomconfig_whois", "anyone");
1406				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1407					@Override
1408					public void onPushSucceeded() {
1409						for(Jid invite : jids) {
1410							invite(conversation,invite);
1411						}
1412						if (callback != null) {
1413							callback.success(conversation);
1414						}
1415					}
1416
1417					@Override
1418					public void onPushFailed() {
1419						if (callback != null) {
1420							callback.error(R.string.conference_creation_failed, conversation);
1421						}
1422					}
1423				});
1424
1425			} catch (InvalidJidException e) {
1426				if (callback != null) {
1427					callback.error(R.string.conference_creation_failed, null);
1428				}
1429			}
1430		} else {
1431			if (callback != null) {
1432				callback.error(R.string.not_connected_try_again,null);
1433			}
1434		}
1435	}
1436
1437	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1438		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1439		request.setTo(conversation.getContactJid().toBareJid());
1440		request.query("http://jabber.org/protocol/muc#owner");
1441		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1442			@Override
1443			public void onIqPacketReceived(Account account, IqPacket packet) {
1444				if (packet.getType() != IqPacket.TYPE_ERROR) {
1445					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1446					for (Field field : data.getFields()) {
1447						if (options.containsKey(field.getName())) {
1448							field.setValue(options.getString(field.getName()));
1449						}
1450					}
1451					data.submit();
1452					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1453					set.setTo(conversation.getContactJid().toBareJid());
1454					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1455					sendIqPacket(account, set, new OnIqPacketReceived() {
1456						@Override
1457						public void onIqPacketReceived(Account account, IqPacket packet) {
1458							if (packet.getType() == IqPacket.TYPE_RESULT) {
1459								if (callback != null) {
1460									callback.onPushSucceeded();
1461								}
1462							} else {
1463								if (callback != null) {
1464									callback.onPushFailed();
1465								}
1466							}
1467						}
1468					});
1469				} else {
1470					if (callback != null) {
1471						callback.onPushFailed();
1472					}
1473				}
1474			}
1475		});
1476	}
1477
1478	public void disconnect(Account account, boolean force) {
1479		if ((account.getStatus() == Account.State.ONLINE)
1480				|| (account.getStatus() == Account.State.DISABLED)) {
1481			if (!force) {
1482				List<Conversation> conversations = getConversations();
1483				for (Conversation conversation : conversations) {
1484					if (conversation.getAccount() == account) {
1485						if (conversation.getMode() == Conversation.MODE_MULTI) {
1486							leaveMuc(conversation);
1487						} else {
1488							if (conversation.endOtrIfNeeded()) {
1489								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1490										+ ": ended otr session with "
1491										+ conversation.getContactJid());
1492							}
1493						}
1494					}
1495				}
1496			}
1497			account.getXmppConnection().disconnect(force);
1498				}
1499	}
1500
1501	@Override
1502	public IBinder onBind(Intent intent) {
1503		return mBinder;
1504	}
1505
1506	public void updateMessage(Message message) {
1507		databaseBackend.updateMessage(message);
1508		updateConversationUi();
1509	}
1510
1511	protected void syncDirtyContacts(Account account) {
1512		for (Contact contact : account.getRoster().getContacts()) {
1513			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1514				pushContactToServer(contact);
1515			}
1516			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1517				deleteContactOnServer(contact);
1518			}
1519		}
1520	}
1521
1522	public void createContact(Contact contact) {
1523		SharedPreferences sharedPref = getPreferences();
1524		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1525		if (autoGrant) {
1526			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1527			contact.setOption(Contact.Options.ASKING);
1528		}
1529		pushContactToServer(contact);
1530	}
1531
1532	public void onOtrSessionEstablished(Conversation conversation) {
1533		Account account = conversation.getAccount();
1534		List<Message> messages = conversation.getMessages();
1535		Session otrSession = conversation.getOtrSession();
1536		Log.d(Config.LOGTAG,
1537				account.getJid().toBareJid() + " otr session established with "
1538				+ conversation.getContactJid() + "/"
1539				+ otrSession.getSessionID().getUserID());
1540		for (Message msg : messages) {
1541			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1542					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1543				SessionID id = otrSession.getSessionID();
1544				try {
1545					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1546				} catch (InvalidJidException e) {
1547					break;
1548				}
1549				if (msg.getType() == Message.TYPE_TEXT) {
1550					MessagePacket outPacket = mMessageGenerator
1551						.generateOtrChat(msg, true);
1552					if (outPacket != null) {
1553						msg.setStatus(Message.STATUS_SEND);
1554						databaseBackend.updateMessage(msg);
1555						sendMessagePacket(account, outPacket);
1556					}
1557				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1558					mJingleConnectionManager.createNewConnection(msg);
1559				}
1560					}
1561		}
1562		updateConversationUi();
1563	}
1564
1565	public boolean renewSymmetricKey(Conversation conversation) {
1566		Account account = conversation.getAccount();
1567		byte[] symmetricKey = new byte[32];
1568		this.mRandom.nextBytes(symmetricKey);
1569		Session otrSession = conversation.getOtrSession();
1570		if (otrSession != null) {
1571			MessagePacket packet = new MessagePacket();
1572			packet.setType(MessagePacket.TYPE_CHAT);
1573			packet.setFrom(account.getJid());
1574			packet.addChild("private", "urn:xmpp:carbons:2");
1575			packet.addChild("no-copy", "urn:xmpp:hints");
1576			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1577					+ otrSession.getSessionID().getUserID());
1578			try {
1579				packet.setBody(otrSession
1580						.transformSending(CryptoHelper.FILETRANSFER
1581							+ CryptoHelper.bytesToHex(symmetricKey)));
1582				sendMessagePacket(account, packet);
1583				conversation.setSymmetricKey(symmetricKey);
1584				return true;
1585			} catch (OtrException e) {
1586				return false;
1587			}
1588		}
1589		return false;
1590	}
1591
1592	public void pushContactToServer(Contact contact) {
1593		contact.resetOption(Contact.Options.DIRTY_DELETE);
1594		contact.setOption(Contact.Options.DIRTY_PUSH);
1595		Account account = contact.getAccount();
1596		if (account.getStatus() == Account.State.ONLINE) {
1597			boolean ask = contact.getOption(Contact.Options.ASKING);
1598			boolean sendUpdates = contact
1599				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1600				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1601			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1602			iq.query("jabber:iq:roster").addChild(contact.asElement());
1603			account.getXmppConnection().sendIqPacket(iq, null);
1604			if (sendUpdates) {
1605				sendPresencePacket(account,
1606						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1607			}
1608			if (ask) {
1609				sendPresencePacket(account,
1610						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1611			}
1612		}
1613	}
1614
1615	public void publishAvatar(Account account, Uri image,
1616			final UiCallback<Avatar> callback) {
1617		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1618		final int size = Config.AVATAR_SIZE;
1619		final Avatar avatar = getFileBackend()
1620			.getPepAvatar(image, size, format);
1621		if (avatar != null) {
1622			avatar.height = size;
1623			avatar.width = size;
1624			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1625				avatar.type = "image/webp";
1626			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1627				avatar.type = "image/jpeg";
1628			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1629				avatar.type = "image/png";
1630			}
1631			if (!getFileBackend().save(avatar)) {
1632				callback.error(R.string.error_saving_avatar, avatar);
1633				return;
1634			}
1635			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1636			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1637
1638				@Override
1639				public void onIqPacketReceived(Account account, IqPacket result) {
1640					if (result.getType() == IqPacket.TYPE_RESULT) {
1641						IqPacket packet = XmppConnectionService.this.mIqGenerator
1642							.publishAvatarMetadata(avatar);
1643						sendIqPacket(account, packet, new OnIqPacketReceived() {
1644
1645							@Override
1646							public void onIqPacketReceived(Account account,
1647									IqPacket result) {
1648								if (result.getType() == IqPacket.TYPE_RESULT) {
1649									if (account.setAvatar(avatar.getFilename())) {
1650										databaseBackend.updateAccount(account);
1651									}
1652									callback.success(avatar);
1653								} else {
1654									callback.error(
1655											R.string.error_publish_avatar_server_reject,
1656											avatar);
1657								}
1658							}
1659						});
1660					} else {
1661						callback.error(
1662								R.string.error_publish_avatar_server_reject,
1663								avatar);
1664					}
1665				}
1666			});
1667		} else {
1668			callback.error(R.string.error_publish_avatar_converting, null);
1669		}
1670	}
1671
1672	public void fetchAvatar(Account account, Avatar avatar) {
1673		fetchAvatar(account, avatar, null);
1674	}
1675
1676	public void fetchAvatar(Account account, final Avatar avatar,
1677			final UiCallback<Avatar> callback) {
1678		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1679		sendIqPacket(account, packet, new OnIqPacketReceived() {
1680
1681			@Override
1682			public void onIqPacketReceived(Account account, IqPacket result) {
1683				final String ERROR = account.getJid().toBareJid()
1684						+ ": fetching avatar for " + avatar.owner + " failed ";
1685				if (result.getType() == IqPacket.TYPE_RESULT) {
1686					avatar.image = mIqParser.avatarData(result);
1687					if (avatar.image != null) {
1688						if (getFileBackend().save(avatar)) {
1689							if (account.getJid().toBareJid().equals(avatar.owner)) {
1690								if (account.setAvatar(avatar.getFilename())) {
1691									databaseBackend.updateAccount(account);
1692								}
1693								getAvatarService().clear(account);
1694								updateConversationUi();
1695								updateAccountUi();
1696							} else {
1697								Contact contact = account.getRoster()
1698										.getContact(avatar.owner);
1699								contact.setAvatar(avatar.getFilename());
1700								getAvatarService().clear(contact);
1701								updateConversationUi();
1702								updateRosterUi();
1703							}
1704							if (callback != null) {
1705								callback.success(avatar);
1706							}
1707							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1708									+ ": succesfully fetched avatar for "
1709									+ avatar.owner);
1710							return;
1711						}
1712					} else {
1713
1714						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1715					}
1716				} else {
1717					Element error = result.findChild("error");
1718					if (error == null) {
1719						Log.d(Config.LOGTAG, ERROR + "(server error)");
1720					} else {
1721						Log.d(Config.LOGTAG, ERROR + error.toString());
1722					}
1723				}
1724				if (callback != null) {
1725					callback.error(0, null);
1726				}
1727
1728			}
1729		});
1730	}
1731
1732	public void checkForAvatar(Account account,
1733			final UiCallback<Avatar> callback) {
1734		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1735		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1736
1737			@Override
1738			public void onIqPacketReceived(Account account, IqPacket packet) {
1739				if (packet.getType() == IqPacket.TYPE_RESULT) {
1740					Element pubsub = packet.findChild("pubsub",
1741							"http://jabber.org/protocol/pubsub");
1742					if (pubsub != null) {
1743						Element items = pubsub.findChild("items");
1744						if (items != null) {
1745							Avatar avatar = Avatar.parseMetadata(items);
1746							if (avatar != null) {
1747								avatar.owner = account.getJid().toBareJid();
1748								if (fileBackend.isAvatarCached(avatar)) {
1749									if (account.setAvatar(avatar.getFilename())) {
1750										databaseBackend.updateAccount(account);
1751									}
1752									getAvatarService().clear(account);
1753									callback.success(avatar);
1754								} else {
1755									fetchAvatar(account, avatar, callback);
1756								}
1757								return;
1758							}
1759						}
1760					}
1761				}
1762				callback.error(0, null);
1763			}
1764		});
1765	}
1766
1767	public void deleteContactOnServer(Contact contact) {
1768		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1769		contact.resetOption(Contact.Options.DIRTY_PUSH);
1770		contact.setOption(Contact.Options.DIRTY_DELETE);
1771		Account account = contact.getAccount();
1772		if (account.getStatus() == Account.State.ONLINE) {
1773			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1774			Element item = iq.query("jabber:iq:roster").addChild("item");
1775			item.setAttribute("jid", contact.getJid().toString());
1776			item.setAttribute("subscription", "remove");
1777			account.getXmppConnection().sendIqPacket(iq, null);
1778		}
1779	}
1780
1781	public void updateConversation(Conversation conversation) {
1782		this.databaseBackend.updateConversation(conversation);
1783	}
1784
1785	public void reconnectAccount(final Account account, final boolean force) {
1786		new Thread(new Runnable() {
1787
1788			@Override
1789			public void run() {
1790				if (account.getXmppConnection() != null) {
1791					disconnect(account, force);
1792				}
1793				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1794					if (account.getXmppConnection() == null) {
1795						account.setXmppConnection(createConnection(account));
1796					}
1797					Thread thread = new Thread(account.getXmppConnection());
1798					thread.start();
1799					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1800							false);
1801				} else {
1802					account.getRoster().clearPresences();
1803					account.setXmppConnection(null);
1804				}
1805			}
1806		}).start();
1807	}
1808
1809	public void invite(Conversation conversation, Jid contact) {
1810		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1811		sendMessagePacket(conversation.getAccount(), packet);
1812	}
1813
1814	public void resetSendingToWaiting(Account account) {
1815		for (Conversation conversation : getConversations()) {
1816			if (conversation.getAccount() == account) {
1817				for (Message message : conversation.getMessages()) {
1818					if (message.getType() != Message.TYPE_IMAGE
1819							&& message.getStatus() == Message.STATUS_UNSEND) {
1820						markMessage(message, Message.STATUS_WAITING);
1821							}
1822				}
1823			}
1824		}
1825	}
1826
1827	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1828			final int status) {
1829		if (uuid == null) {
1830			return false;
1831		} else {
1832			for (Conversation conversation : getConversations()) {
1833				if (conversation.getContactJid().equals(recipient)
1834						&& conversation.getAccount().equals(account)) {
1835					return markMessage(conversation, uuid, status);
1836						}
1837			}
1838			return false;
1839		}
1840	}
1841
1842	public boolean markMessage(Conversation conversation, String uuid,
1843			int status) {
1844		if (uuid == null) {
1845			return false;
1846		} else {
1847			for (Message message : conversation.getMessages()) {
1848				if (uuid.equals(message.getUuid())
1849						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1850							.equals(message.getRemoteMsgId()))) {
1851					markMessage(message, status);
1852					return true;
1853							}
1854			}
1855			return false;
1856		}
1857	}
1858
1859	public void markMessage(Message message, int status) {
1860		if (status == Message.STATUS_SEND_FAILED
1861				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1862					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1863			return;
1864					}
1865		message.setStatus(status);
1866		databaseBackend.updateMessage(message);
1867		updateConversationUi();
1868	}
1869
1870	public SharedPreferences getPreferences() {
1871		return PreferenceManager
1872			.getDefaultSharedPreferences(getApplicationContext());
1873	}
1874
1875	public boolean forceEncryption() {
1876		return getPreferences().getBoolean("force_encryption", false);
1877	}
1878
1879	public boolean confirmMessages() {
1880		return getPreferences().getBoolean("confirm_messages", true);
1881	}
1882
1883	public boolean saveEncryptedMessages() {
1884		return !getPreferences().getBoolean("dont_save_encrypted", false);
1885	}
1886
1887	public boolean indicateReceived() {
1888		return getPreferences().getBoolean("indicate_received", false);
1889	}
1890
1891	public void updateConversationUi() {
1892		if (mOnConversationUpdate != null) {
1893			mOnConversationUpdate.onConversationUpdate();
1894		}
1895	}
1896
1897	public void updateAccountUi() {
1898		if (mOnAccountUpdate != null) {
1899			mOnAccountUpdate.onAccountUpdate();
1900		}
1901	}
1902
1903	public void updateRosterUi() {
1904		if (mOnRosterUpdate != null) {
1905			mOnRosterUpdate.onRosterUpdate();
1906		}
1907	}
1908
1909	public void updateMucRosterUi() {
1910		if (mOnMucRosterUpdate != null) {
1911			mOnMucRosterUpdate.onMucRosterUpdate();
1912		}
1913	}
1914
1915	public Account findAccountByJid(final Jid accountJid) {
1916		for (Account account : this.accounts) {
1917			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1918				return account;
1919			}
1920		}
1921		return null;
1922	}
1923
1924	public Conversation findConversationByUuid(String uuid) {
1925		for (Conversation conversation : getConversations()) {
1926			if (conversation.getUuid().equals(uuid)) {
1927				return conversation;
1928			}
1929		}
1930		return null;
1931	}
1932
1933	public void markRead(Conversation conversation, boolean calledByUi) {
1934		mNotificationService.clear(conversation);
1935		final Message markable = conversation.getLatestMarkableMessage();
1936		conversation.markRead();
1937		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1938			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1939			Account account = conversation.getAccount();
1940			final Jid to = markable.getCounterpart();
1941			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1942			this.sendMessagePacket(conversation.getAccount(),packet);
1943		}
1944		if (!calledByUi) {
1945			updateConversationUi();
1946		}
1947	}
1948
1949	public void failWaitingOtrMessages(Conversation conversation) {
1950		for (Message message : conversation.getMessages()) {
1951			if (message.getEncryption() == Message.ENCRYPTION_OTR
1952					&& message.getStatus() == Message.STATUS_WAITING) {
1953				markMessage(message, Message.STATUS_SEND_FAILED);
1954					}
1955		}
1956	}
1957
1958	public SecureRandom getRNG() {
1959		return this.mRandom;
1960	}
1961
1962	public MemorizingTrustManager getMemorizingTrustManager() {
1963		return this.mMemorizingTrustManager;
1964	}
1965
1966	public PowerManager getPowerManager() {
1967		return this.pm;
1968	}
1969
1970	public LruCache<String, Bitmap> getBitmapCache() {
1971		return this.mBitmapCache;
1972	}
1973
1974	public void syncRosterToDisk(final Account account) {
1975		new Thread(new Runnable() {
1976
1977			@Override
1978			public void run() {
1979				databaseBackend.writeRoster(account.getRoster());
1980			}
1981		}).start();
1982
1983	}
1984
1985	public List<String> getKnownHosts() {
1986		List<String> hosts = new ArrayList<>();
1987		for (Account account : getAccounts()) {
1988			if (!hosts.contains(account.getServer().toString())) {
1989				hosts.add(account.getServer().toString());
1990			}
1991			for (Contact contact : account.getRoster().getContacts()) {
1992				if (contact.showInRoster()) {
1993					final String server = contact.getServer().toString();
1994					if (server != null && !hosts.contains(server)) {
1995						hosts.add(server);
1996					}
1997				}
1998			}
1999		}
2000		return hosts;
2001	}
2002
2003	public List<String> getKnownConferenceHosts() {
2004		ArrayList<String> mucServers = new ArrayList<>();
2005		for (Account account : accounts) {
2006			if (account.getXmppConnection() != null) {
2007				String server = account.getXmppConnection().getMucServer();
2008				if (server != null && !mucServers.contains(server)) {
2009					mucServers.add(server);
2010				}
2011			}
2012		}
2013		return mucServers;
2014	}
2015
2016	public void sendMessagePacket(Account account, MessagePacket packet) {
2017		XmppConnection connection = account.getXmppConnection();
2018		if (connection != null) {
2019			connection.sendMessagePacket(packet);
2020		}
2021	}
2022
2023	public void sendPresencePacket(Account account, PresencePacket packet) {
2024		XmppConnection connection = account.getXmppConnection();
2025		if (connection != null) {
2026			connection.sendPresencePacket(packet);
2027		}
2028	}
2029
2030	public void sendIqPacket(Account account, IqPacket packet,
2031			OnIqPacketReceived callback) {
2032		XmppConnection connection = account.getXmppConnection();
2033		if (connection != null) {
2034			connection.sendIqPacket(packet, callback);
2035		}
2036	}
2037
2038	public MessageGenerator getMessageGenerator() {
2039		return this.mMessageGenerator;
2040	}
2041
2042	public PresenceGenerator getPresenceGenerator() {
2043		return this.mPresenceGenerator;
2044	}
2045
2046	public IqGenerator getIqGenerator() {
2047		return this.mIqGenerator;
2048	}
2049
2050	public JingleConnectionManager getJingleConnectionManager() {
2051		return this.mJingleConnectionManager;
2052	}
2053
2054	public MessageArchiveService getMessageArchiveService() {
2055		return this.mMessageArchiveService;
2056	}
2057
2058	public List<Contact> findContacts(Jid jid) {
2059		ArrayList<Contact> contacts = new ArrayList<>();
2060		for (Account account : getAccounts()) {
2061			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2062				Contact contact = account.getRoster().getContactFromRoster(jid);
2063				if (contact != null) {
2064					contacts.add(contact);
2065				}
2066			}
2067		}
2068		return contacts;
2069	}
2070
2071	public NotificationService getNotificationService() {
2072		return this.mNotificationService;
2073	}
2074
2075	public HttpConnectionManager getHttpConnectionManager() {
2076		return this.mHttpConnectionManager;
2077	}
2078
2079	public void resendFailedMessages(Message message) {
2080		List<Message> messages = new ArrayList<>();
2081		Message current = message;
2082		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2083			messages.add(current);
2084			if (current.mergeable(current.next())) {
2085				current = current.next();
2086			} else {
2087				break;
2088			}
2089		}
2090		for (Message msg : messages) {
2091			markMessage(msg, Message.STATUS_WAITING);
2092			this.resendMessage(msg);
2093		}
2094	}
2095
2096	public interface OnConversationUpdate {
2097		public void onConversationUpdate();
2098	}
2099
2100	public interface OnAccountUpdate {
2101		public void onAccountUpdate();
2102	}
2103
2104	public interface OnRosterUpdate {
2105		public void onRosterUpdate();
2106	}
2107
2108	public interface OnMucRosterUpdate {
2109		public void onMucRosterUpdate();
2110	}
2111
2112	private interface OnConferenceOptionsPushed {
2113		public void onPushSucceeded();
2114		public void onPushFailed();
2115	}
2116
2117	public class XmppConnectionBinder extends Binder {
2118		public XmppConnectionService getService() {
2119			return XmppConnectionService.this;
2120		}
2121	}
2122}