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