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.io.FileNotFoundException;
  36import java.io.IOException;
  37import java.io.OutputStream;
  38import java.math.BigInteger;
  39import java.security.SecureRandom;
  40import java.text.SimpleDateFormat;
  41import java.util.ArrayList;
  42import java.util.Collections;
  43import java.util.Comparator;
  44import java.util.Date;
  45import java.util.Hashtable;
  46import java.util.List;
  47import java.util.Locale;
  48import java.util.TimeZone;
  49import java.util.concurrent.CopyOnWriteArrayList;
  50
  51import de.duenndns.ssl.MemorizingTrustManager;
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.crypto.PgpEngine;
  55import eu.siacs.conversations.entities.Account;
  56import eu.siacs.conversations.entities.Bookmark;
  57import eu.siacs.conversations.entities.Contact;
  58import eu.siacs.conversations.entities.Conversation;
  59import eu.siacs.conversations.entities.Downloadable;
  60import eu.siacs.conversations.entities.DownloadableFile;
  61import eu.siacs.conversations.entities.DownloadablePlaceholder;
  62import eu.siacs.conversations.entities.Message;
  63import eu.siacs.conversations.entities.MucOptions;
  64import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  65import eu.siacs.conversations.entities.Presences;
  66import eu.siacs.conversations.generator.IqGenerator;
  67import eu.siacs.conversations.generator.MessageGenerator;
  68import eu.siacs.conversations.generator.PresenceGenerator;
  69import eu.siacs.conversations.http.HttpConnectionManager;
  70import eu.siacs.conversations.parser.IqParser;
  71import eu.siacs.conversations.parser.MessageParser;
  72import eu.siacs.conversations.parser.PresenceParser;
  73import eu.siacs.conversations.persistance.DatabaseBackend;
  74import eu.siacs.conversations.persistance.FileBackend;
  75import eu.siacs.conversations.ui.UiCallback;
  76import eu.siacs.conversations.utils.CryptoHelper;
  77import eu.siacs.conversations.utils.ExceptionHelper;
  78import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  79import eu.siacs.conversations.utils.PRNGFixes;
  80import eu.siacs.conversations.utils.PhoneHelper;
  81import eu.siacs.conversations.xml.Element;
  82import eu.siacs.conversations.xmpp.OnBindListener;
  83import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  84import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  85import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  86import eu.siacs.conversations.xmpp.OnStatusChanged;
  87import eu.siacs.conversations.xmpp.XmppConnection;
  88import eu.siacs.conversations.xmpp.forms.Data;
  89import eu.siacs.conversations.xmpp.forms.Field;
  90import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  91import eu.siacs.conversations.xmpp.jid.Jid;
  92import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  93import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  94import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  95import eu.siacs.conversations.xmpp.pep.Avatar;
  96import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  97import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  98import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  99
 100public class XmppConnectionService extends Service {
 101
 102	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 103	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 104	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 105	private ContentObserver contactObserver = new ContentObserver(null) {
 106		@Override
 107		public void onChange(boolean selfChange) {
 108			super.onChange(selfChange);
 109			Intent intent = new Intent(getApplicationContext(),
 110					XmppConnectionService.class);
 111			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 112			startService(intent);
 113		}
 114	};
 115	private final IBinder mBinder = new XmppConnectionBinder();
 116	public DatabaseBackend databaseBackend;
 117	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 118
 119		@Override
 120		public void onContactStatusChanged(Contact contact, boolean online) {
 121			Conversation conversation = find(getConversations(), contact);
 122			if (conversation != null) {
 123				if (online && contact.getPresences().size() > 1) {
 124					conversation.endOtrIfNeeded();
 125				} else {
 126					conversation.resetOtrSession();
 127				}
 128				if (online && (contact.getPresences().size() == 1)) {
 129					sendUnsendMessages(conversation);
 130				}
 131			}
 132		}
 133	};
 134	private FileBackend fileBackend = new FileBackend(this);
 135	private MemorizingTrustManager mMemorizingTrustManager;
 136	private NotificationService mNotificationService = new NotificationService(
 137			this);
 138	private MessageParser mMessageParser = new MessageParser(this);
 139	private PresenceParser mPresenceParser = new PresenceParser(this);
 140	private IqParser mIqParser = new IqParser(this);
 141	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 142	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 143	private List<Account> accounts;
 144	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 145	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 146			this);
 147	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 148			this);
 149	private AvatarService mAvatarService = new AvatarService(this);
 150	private OnConversationUpdate mOnConversationUpdate = null;
 151	private Integer convChangedListenerCount = 0;
 152	private OnAccountUpdate mOnAccountUpdate = null;
 153	private OnStatusChanged statusListener = new OnStatusChanged() {
 154
 155		@Override
 156		public void onStatusChanged(Account account) {
 157			XmppConnection connection = account.getXmppConnection();
 158			if (mOnAccountUpdate != null) {
 159				mOnAccountUpdate.onAccountUpdate();
 160			}
 161			if (account.getStatus() == Account.State.ONLINE) {
 162				for (Conversation conversation : account.pendingConferenceLeaves) {
 163					leaveMuc(conversation);
 164				}
 165				for (Conversation conversation : account.pendingConferenceJoins) {
 166					joinMuc(conversation);
 167				}
 168				mJingleConnectionManager.cancelInTransmission();
 169				List<Conversation> conversations = getConversations();
 170				for (Conversation conversation : conversations) {
 171					if (conversation.getAccount() == account) {
 172						conversation.startOtrIfNeeded();
 173						sendUnsendMessages(conversation);
 174					}
 175				}
 176				if (connection != null && connection.getFeatures().csi()) {
 177					if (checkListeners()) {
 178						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 179								+ " sending csi//inactive");
 180						connection.sendInactive();
 181					} else {
 182						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 183								+ " sending csi//active");
 184						connection.sendActive();
 185					}
 186				}
 187				syncDirtyContacts(account);
 188				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 189			} else if (account.getStatus() == Account.State.OFFLINE) {
 190				resetSendingToWaiting(account);
 191				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 192					int timeToReconnect = mRandom.nextInt(50) + 10;
 193					scheduleWakeupCall(timeToReconnect, false);
 194				}
 195			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 196				databaseBackend.updateAccount(account);
 197				reconnectAccount(account, true);
 198			} else if ((account.getStatus() != Account.State.CONNECTING)
 199					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 200				if (connection != null) {
 201					int next = connection.getTimeToNextAttempt();
 202					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 203							+ ": error connecting account. try again in "
 204							+ next + "s for the "
 205							+ (connection.getAttempt() + 1) + " time");
 206					scheduleWakeupCall((int) (next * 1.2), false);
 207				}
 208					}
 209			getNotificationService().updateErrorNotification();
 210		}
 211	};
 212	private int accountChangedListenerCount = 0;
 213	private OnRosterUpdate mOnRosterUpdate = null;
 214	private int rosterChangedListenerCount = 0;
 215	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 216	private int mucRosterChangedListenerCount = 0;
 217	private SecureRandom mRandom;
 218	private FileObserver fileObserver = new FileObserver(
 219			FileBackend.getConversationsImageDirectory()) {
 220
 221		@Override
 222		public void onEvent(int event, String path) {
 223			if (event == FileObserver.DELETE) {
 224				markFileDeleted(path.split("\\.")[0]);
 225			}
 226		}
 227	};
 228	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 229
 230		@Override
 231		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 232			mJingleConnectionManager.deliverPacket(account, packet);
 233		}
 234	};
 235
 236	private OpenPgpServiceConnection pgpServiceConnection;
 237	private PgpEngine mPgpEngine = null;
 238	private Intent pingIntent;
 239	private PendingIntent pendingPingIntent = null;
 240	private WakeLock wakeLock;
 241	private PowerManager pm;
 242	private OnBindListener mOnBindListener = new OnBindListener() {
 243
 244		@Override
 245		public void onBind(final Account account) {
 246			account.getRoster().clearPresences();
 247			account.clearPresences(); // self presences
 248			account.pendingConferenceJoins.clear();
 249			account.pendingConferenceLeaves.clear();
 250			fetchRosterFromServer(account);
 251			fetchBookmarks(account);
 252			sendPresencePacket(account,
 253					mPresenceGenerator.sendPresence(account));
 254			connectMultiModeConversations(account);
 255			updateConversationUi();
 256		}
 257	};
 258
 259	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 260
 261		@Override
 262		public void onMessageAcknowledged(Account account, String uuid) {
 263			for (Conversation conversation : getConversations()) {
 264				if (conversation.getAccount() == account) {
 265					for (Message message : conversation.getMessages()) {
 266						if ((message.getStatus() == Message.STATUS_UNSEND || message
 267									.getStatus() == Message.STATUS_WAITING)
 268								&& message.getUuid().equals(uuid)) {
 269							markMessage(message, Message.STATUS_SEND);
 270							return;
 271								}
 272					}
 273				}
 274			}
 275		}
 276	};
 277	private LruCache<String, Bitmap> mBitmapCache;
 278	private IqGenerator mIqGenerator = new IqGenerator(this);
 279
 280	public PgpEngine getPgpEngine() {
 281		if (pgpServiceConnection.isBound()) {
 282			if (this.mPgpEngine == null) {
 283				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 284							getApplicationContext(),
 285							pgpServiceConnection.getService()), this);
 286			}
 287			return mPgpEngine;
 288		} else {
 289			return null;
 290		}
 291
 292	}
 293
 294	public FileBackend getFileBackend() {
 295		return this.fileBackend;
 296	}
 297
 298	public AvatarService getAvatarService() {
 299		return this.mAvatarService;
 300	}
 301
 302	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 303		final Message message;
 304		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 305			message = new Message(conversation, "",
 306					Message.ENCRYPTION_DECRYPTED);
 307		} else {
 308			message = new Message(conversation, "",
 309					conversation.getNextEncryption(forceEncryption()));
 310		}
 311		message.setCounterpart(conversation.getNextCounterpart());
 312		message.setType(Message.TYPE_FILE);
 313		message.setStatus(Message.STATUS_OFFERED);
 314		String path = getFileBackend().getOriginalPath(uri);
 315		if (path!=null) {
 316			message.setRelativeFilePath(path);
 317			getFileBackend().updateFileParams(message);
 318			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 319				getPgpEngine().encrypt(message, callback);
 320			} else {
 321				callback.success(message);
 322			}
 323		} else {
 324			new Thread(new Runnable() {
 325				@Override
 326				public void run() {
 327					try {
 328						getFileBackend().copyFileToPrivateStorage(message, uri);
 329						getFileBackend().updateFileParams(message);
 330						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 331							getPgpEngine().encrypt(message, callback);
 332						} else {
 333							callback.success(message);
 334						}
 335					} catch (FileBackend.FileCopyException e) {
 336						callback.error(e.getResId(),message);
 337					}
 338				}
 339			}).start();
 340
 341		}
 342	}
 343
 344	public void attachImageToConversation(final Conversation conversation,
 345			final Uri uri, final UiCallback<Message> callback) {
 346		final Message message;
 347		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 348			message = new Message(conversation, "",
 349					Message.ENCRYPTION_DECRYPTED);
 350		} else {
 351			message = new Message(conversation, "",
 352					conversation.getNextEncryption(forceEncryption()));
 353		}
 354		message.setCounterpart(conversation.getNextCounterpart());
 355		message.setType(Message.TYPE_IMAGE);
 356		message.setStatus(Message.STATUS_OFFERED);
 357		new Thread(new Runnable() {
 358
 359			@Override
 360			public void run() {
 361				try {
 362					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 363					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 364						getPgpEngine().encrypt(message, callback);
 365					} else {
 366						callback.success(message);
 367					}
 368				} catch (FileBackend.FileCopyException e) {
 369					callback.error(e.getResId(), message);
 370				}
 371			}
 372		}).start();
 373	}
 374
 375	public Conversation find(Bookmark bookmark) {
 376		return find(bookmark.getAccount(), bookmark.getJid());
 377	}
 378
 379	public Conversation find(final Account account, final Jid jid) {
 380		return find(getConversations(), account, jid);
 381	}
 382
 383	@Override
 384	public int onStartCommand(Intent intent, int flags, int startId) {
 385		if (intent != null && intent.getAction() != null) {
 386			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 387				mergePhoneContactsWithRoster();
 388				return START_STICKY;
 389			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 390				logoutAndSave();
 391				return START_NOT_STICKY;
 392			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 393				mNotificationService.clear();
 394			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 395				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 396				toggleForegroundService();
 397			}
 398		}
 399		this.wakeLock.acquire();
 400
 401		for (Account account : accounts) {
 402			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 403				if (!hasInternetConnection()) {
 404					account.setStatus(Account.State.NO_INTERNET);
 405					if (statusListener != null) {
 406						statusListener.onStatusChanged(account);
 407					}
 408				} else {
 409					if (account.getStatus() == Account.State.NO_INTERNET) {
 410						account.setStatus(Account.State.OFFLINE);
 411						if (statusListener != null) {
 412							statusListener.onStatusChanged(account);
 413						}
 414					}
 415					if (account.getStatus() == Account.State.ONLINE) {
 416						long lastReceived = account.getXmppConnection()
 417							.getLastPacketReceived();
 418						long lastSent = account.getXmppConnection()
 419							.getLastPingSent();
 420						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 421							Log.d(Config.LOGTAG, account.getJid()
 422									+ ": ping timeout");
 423							this.reconnectAccount(account, true);
 424						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 425							account.getXmppConnection().sendPing();
 426							this.scheduleWakeupCall(2, false);
 427						}
 428					} else if (account.getStatus() == Account.State.OFFLINE) {
 429						if (account.getXmppConnection() == null) {
 430							account.setXmppConnection(this
 431									.createConnection(account));
 432						}
 433						new Thread(account.getXmppConnection()).start();
 434					} else if ((account.getStatus() == Account.State.CONNECTING)
 435							&& ((SystemClock.elapsedRealtime() - account
 436									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 437						Log.d(Config.LOGTAG, account.getJid()
 438								+ ": time out during connect reconnecting");
 439						reconnectAccount(account, true);
 440					} else {
 441						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 442							reconnectAccount(account, true);
 443						}
 444					}
 445					// in any case. reschedule wakup call
 446					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 447				}
 448				if (mOnAccountUpdate != null) {
 449					mOnAccountUpdate.onAccountUpdate();
 450				}
 451			}
 452		}
 453		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 454			if (!pm.isScreenOn()) {
 455			removeStaleListeners();
 456			}*/
 457		if (wakeLock.isHeld()) {
 458			try {
 459				wakeLock.release();
 460			} catch (final RuntimeException ignored) {
 461			}
 462		}
 463		return START_STICKY;
 464	}
 465
 466	public boolean hasInternetConnection() {
 467		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 468			.getSystemService(Context.CONNECTIVITY_SERVICE);
 469		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 470		return activeNetwork != null && activeNetwork.isConnected();
 471	}
 472
 473	@SuppressLint("TrulyRandom")
 474	@Override
 475	public void onCreate() {
 476		ExceptionHelper.init(getApplicationContext());
 477		PRNGFixes.apply();
 478		this.mRandom = new SecureRandom();
 479		this.mMemorizingTrustManager = new MemorizingTrustManager(
 480				getApplicationContext());
 481
 482		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 483		int cacheSize = maxMemory / 8;
 484		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 485			@Override
 486			protected int sizeOf(String key, Bitmap bitmap) {
 487				return bitmap.getByteCount() / 1024;
 488			}
 489		};
 490
 491		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 492		this.accounts = databaseBackend.getAccounts();
 493
 494		for (Account account : this.accounts) {
 495			account.initOtrEngine(this);
 496			this.databaseBackend.readRoster(account.getRoster());
 497		}
 498		initConversations();
 499		this.mergePhoneContactsWithRoster();
 500
 501		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 502		this.fileObserver.startWatching();
 503		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 504		this.pgpServiceConnection.bindToService();
 505
 506		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 507		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 508		toggleForegroundService();
 509	}
 510
 511	public void toggleForegroundService() {
 512		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 513			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 514		} else {
 515			stopForeground(true);
 516		}
 517	}
 518
 519	@Override
 520	public void onTaskRemoved(Intent rootIntent) {
 521		super.onTaskRemoved(rootIntent);
 522		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 523			this.logoutAndSave();
 524		}
 525	}
 526
 527	private void logoutAndSave() {
 528		for (Account account : accounts) {
 529			databaseBackend.writeRoster(account.getRoster());
 530			if (account.getXmppConnection() != null) {
 531				disconnect(account, false);
 532			}
 533		}
 534		Context context = getApplicationContext();
 535		AlarmManager alarmManager = (AlarmManager) context
 536			.getSystemService(Context.ALARM_SERVICE);
 537		Intent intent = new Intent(context, EventReceiver.class);
 538		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 539		Log.d(Config.LOGTAG, "good bye");
 540		stopSelf();
 541	}
 542
 543	protected void scheduleWakeupCall(int seconds, boolean ping) {
 544		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 545		Context context = getApplicationContext();
 546		AlarmManager alarmManager = (AlarmManager) context
 547			.getSystemService(Context.ALARM_SERVICE);
 548
 549		if (ping) {
 550			if (this.pingIntent == null) {
 551				this.pingIntent = new Intent(context, EventReceiver.class);
 552				this.pingIntent.setAction("ping");
 553				this.pingIntent.putExtra("time", timeToWake);
 554				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 555						this.pingIntent, 0);
 556				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 557						timeToWake, pendingPingIntent);
 558			} else {
 559				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 560				if (scheduledTime < SystemClock.elapsedRealtime()
 561						|| (scheduledTime > timeToWake)) {
 562					this.pingIntent.putExtra("time", timeToWake);
 563					alarmManager.cancel(this.pendingPingIntent);
 564					this.pendingPingIntent = PendingIntent.getBroadcast(
 565							context, 0, this.pingIntent, 0);
 566					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 567							timeToWake, pendingPingIntent);
 568						}
 569			}
 570		} else {
 571			Intent intent = new Intent(context, EventReceiver.class);
 572			intent.setAction("ping_check");
 573			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 574					intent, 0);
 575			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 576					alarmIntent);
 577		}
 578
 579	}
 580
 581	public XmppConnection createConnection(Account account) {
 582		SharedPreferences sharedPref = getPreferences();
 583		account.setResource(sharedPref.getString("resource", "mobile")
 584				.toLowerCase(Locale.getDefault()));
 585		XmppConnection connection = new XmppConnection(account, this);
 586		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 587		connection.setOnStatusChangedListener(this.statusListener);
 588		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 589		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 590		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 591		connection.setOnBindListener(this.mOnBindListener);
 592		connection
 593			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 594		return connection;
 595	}
 596
 597	public void sendMessage(Message message) {
 598		Account account = message.getConversation().getAccount();
 599		account.deactivateGracePeriod();
 600		Conversation conv = message.getConversation();
 601		MessagePacket packet = null;
 602		boolean saveInDb = true;
 603		boolean send = false;
 604		if (account.getStatus() == Account.State.ONLINE
 605				&& account.getXmppConnection() != null) {
 606			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 607				if (message.getCounterpart() != null) {
 608					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 609						if (!conv.hasValidOtrSession()) {
 610							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 611							message.setStatus(Message.STATUS_WAITING);
 612						} else if (conv.hasValidOtrSession()
 613								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 614							mJingleConnectionManager
 615								.createNewConnection(message);
 616								}
 617					} else {
 618						mJingleConnectionManager.createNewConnection(message);
 619					}
 620				} else {
 621					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 622						conv.startOtrIfNeeded();
 623					}
 624					message.setStatus(Message.STATUS_WAITING);
 625				}
 626			} else {
 627				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 628					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 629						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 630						message.setStatus(Message.STATUS_WAITING);
 631					} else if (conv.hasValidOtrSession()) {
 632						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 633							packet = mMessageGenerator.generateOtrChat(message);
 634							send = true;
 635						} else {
 636							message.setStatus(Message.STATUS_WAITING);
 637							conv.startOtrIfNeeded();
 638						}
 639					} else {
 640						message.setStatus(Message.STATUS_WAITING);
 641					}
 642				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 643					message.getConversation().endOtrIfNeeded();
 644					failWaitingOtrMessages(message.getConversation());
 645					packet = mMessageGenerator.generatePgpChat(message);
 646					send = true;
 647				} else {
 648					message.getConversation().endOtrIfNeeded();
 649					failWaitingOtrMessages(message.getConversation());
 650					packet = mMessageGenerator.generateChat(message);
 651					send = true;
 652				}
 653			}
 654			if (!account.getXmppConnection().getFeatures().sm()
 655					&& conv.getMode() != Conversation.MODE_MULTI) {
 656				message.setStatus(Message.STATUS_SEND);
 657					}
 658		} else {
 659			message.setStatus(Message.STATUS_WAITING);
 660			if (message.getType() == Message.TYPE_TEXT) {
 661				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 662					String pgpBody = message.getEncryptedBody();
 663					String decryptedBody = message.getBody();
 664					message.setBody(pgpBody);
 665					message.setEncryption(Message.ENCRYPTION_PGP);
 666					databaseBackend.createMessage(message);
 667					saveInDb = false;
 668					message.setBody(decryptedBody);
 669					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 670				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 671					if (!conv.hasValidOtrSession()
 672							&& message.getCounterpart() != null) {
 673						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 674							}
 675				}
 676			}
 677
 678		}
 679		conv.add(message);
 680		if (saveInDb) {
 681			if (message.getEncryption() == Message.ENCRYPTION_NONE
 682					|| saveEncryptedMessages()) {
 683				databaseBackend.createMessage(message);
 684					}
 685		}
 686		if ((send) && (packet != null)) {
 687			sendMessagePacket(account, packet);
 688		}
 689		updateConversationUi();
 690	}
 691
 692	private void sendUnsendMessages(Conversation conversation) {
 693		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 694			int status = conversation.getMessages().get(i).getStatus();
 695			if (status == Message.STATUS_WAITING) {
 696				resendMessage(conversation.getMessages().get(i));
 697			}
 698		}
 699	}
 700
 701	private void resendMessage(Message message) {
 702		Account account = message.getConversation().getAccount();
 703		MessagePacket packet = null;
 704		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 705			Presences presences = message.getConversation().getContact()
 706				.getPresences();
 707			if (!message.getConversation().hasValidOtrSession()) {
 708				if ((message.getCounterpart() != null)
 709						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 710					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 711				} else {
 712					if (presences.size() == 1) {
 713						String presence = presences.asStringArray()[0];
 714						message.getConversation().startOtrSession(presence, true);
 715					}
 716				}
 717			} else {
 718				if (message.getConversation().getOtrSession()
 719						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 720					try {
 721						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 722						if (message.getType() == Message.TYPE_TEXT) {
 723							packet = mMessageGenerator.generateOtrChat(message,
 724									true);
 725						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 726							mJingleConnectionManager.createNewConnection(message);
 727						}
 728					} catch (InvalidJidException e) {
 729
 730					}
 731						}
 732			}
 733		} else if (message.getType() == Message.TYPE_TEXT) {
 734			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 735				packet = mMessageGenerator.generateChat(message, true);
 736			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 737					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 738				packet = mMessageGenerator.generatePgpChat(message, true);
 739					}
 740		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 741			Contact contact = message.getConversation().getContact();
 742			Presences presences = contact.getPresences();
 743			if ((message.getCounterpart() != null)
 744					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 745				markMessage(message, Message.STATUS_OFFERED);
 746				mJingleConnectionManager.createNewConnection(message);
 747			} else {
 748				if (presences.size() == 1) {
 749					String presence = presences.asStringArray()[0];
 750					try {
 751						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 752					} catch (InvalidJidException e) {
 753						return;
 754					}
 755					markMessage(message, Message.STATUS_OFFERED);
 756					mJingleConnectionManager.createNewConnection(message);
 757				}
 758			}
 759		}
 760		if (packet != null) {
 761			if (!account.getXmppConnection().getFeatures().sm()
 762					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 763				markMessage(message, Message.STATUS_SEND);
 764			} else {
 765				markMessage(message, Message.STATUS_UNSEND);
 766			}
 767			sendMessagePacket(account, packet);
 768		}
 769	}
 770
 771	public void fetchRosterFromServer(Account account) {
 772		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 773		if (!"".equals(account.getRosterVersion())) {
 774			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 775					+ ": fetching roster version " + account.getRosterVersion());
 776		} else {
 777			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 778		}
 779		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 780				account.getRosterVersion());
 781		account.getXmppConnection().sendIqPacket(iqPacket,
 782				new OnIqPacketReceived() {
 783
 784					@Override
 785					public void onIqPacketReceived(final Account account,
 786												   IqPacket packet) {
 787						Element query = packet.findChild("query");
 788						if (query != null) {
 789							account.getRoster().markAllAsNotInRoster();
 790							mIqParser.rosterItems(account, query);
 791						}
 792					}
 793				});
 794	}
 795
 796	public void fetchBookmarks(Account account) {
 797		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 798		Element query = iqPacket.query("jabber:iq:private");
 799		query.addChild("storage", "storage:bookmarks");
 800		OnIqPacketReceived callback = new OnIqPacketReceived() {
 801
 802			@Override
 803			public void onIqPacketReceived(Account account, IqPacket packet) {
 804				Element query = packet.query();
 805				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 806				Element storage = query.findChild("storage",
 807						"storage:bookmarks");
 808				if (storage != null) {
 809					for (Element item : storage.getChildren()) {
 810						if (item.getName().equals("conference")) {
 811							Bookmark bookmark = Bookmark.parse(item, account);
 812							bookmarks.add(bookmark);
 813							Conversation conversation = find(bookmark);
 814							if (conversation != null) {
 815								conversation.setBookmark(bookmark);
 816							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 817								conversation = findOrCreateConversation(
 818										account, bookmark.getJid(), true);
 819								conversation.setBookmark(bookmark);
 820								joinMuc(conversation);
 821							}
 822						}
 823					}
 824				}
 825				account.setBookmarks(bookmarks);
 826			}
 827		};
 828		sendIqPacket(account, iqPacket, callback);
 829
 830	}
 831
 832	public void pushBookmarks(Account account) {
 833		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 834		Element query = iqPacket.query("jabber:iq:private");
 835		Element storage = query.addChild("storage", "storage:bookmarks");
 836		for (Bookmark bookmark : account.getBookmarks()) {
 837			storage.addChild(bookmark);
 838		}
 839		sendIqPacket(account, iqPacket, null);
 840	}
 841
 842	private void mergePhoneContactsWithRoster() {
 843		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 844				new OnPhoneContactsLoadedListener() {
 845					@Override
 846					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 847						for (Account account : accounts) {
 848							account.getRoster().clearSystemAccounts();
 849						}
 850						for (Bundle phoneContact : phoneContacts) {
 851							for (Account account : accounts) {
 852								Jid jid;
 853								try {
 854									jid = Jid.fromString(phoneContact.getString("jid"));
 855								} catch (final InvalidJidException e) {
 856									// TODO: Warn if contact import fails here?
 857									break;
 858								}
 859								final Contact contact = account.getRoster()
 860									.getContact(jid);
 861								String systemAccount = phoneContact
 862									.getInt("phoneid")
 863									+ "#"
 864									+ phoneContact.getString("lookup");
 865								contact.setSystemAccount(systemAccount);
 866								contact.setPhotoUri(phoneContact
 867										.getString("photouri"));
 868								contact.setSystemName(phoneContact
 869										.getString("displayname"));
 870								getAvatarService().clear(contact);
 871							}
 872						}
 873					}
 874				});
 875	}
 876
 877	private void initConversations() {
 878		synchronized (this.conversations) {
 879			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 880			for (Account account : this.accounts) {
 881				accountLookupTable.put(account.getUuid(), account);
 882			}
 883			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 884			for (Conversation conv : this.conversations) {
 885				Account account = accountLookupTable.get(conv.getAccountUuid());
 886				conv.setAccount(account);
 887				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 888				checkDeletedFiles(conv);
 889			}
 890		}
 891	}
 892
 893	public List<Conversation> getConversations() {
 894		return this.conversations;
 895	}
 896
 897	private void checkDeletedFiles(Conversation conversation) {
 898		for (Message message : conversation.getMessages()) {
 899			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 900					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 901				if (!getFileBackend().isFileAvailable(message)) {
 902					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 903				}
 904					}
 905		}
 906	}
 907
 908	private void markFileDeleted(String uuid) {
 909		for (Conversation conversation : getConversations()) {
 910			for (Message message : conversation.getMessages()) {
 911				if (message.getType() == Message.TYPE_IMAGE
 912						&& message.getEncryption() != Message.ENCRYPTION_PGP
 913						&& message.getUuid().equals(uuid)) {
 914					if (!getFileBackend().isFileAvailable(message)) {
 915						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 916						updateConversationUi();
 917					}
 918					return;
 919						}
 920			}
 921		}
 922	}
 923
 924	public void populateWithOrderedConversations(final List<Conversation> list) {
 925		populateWithOrderedConversations(list, true);
 926	}
 927
 928	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 929		list.clear();
 930		if (includeConferences) {
 931			list.addAll(getConversations());
 932		} else {
 933			for (Conversation conversation : getConversations()) {
 934				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 935					list.add(conversation);
 936				}
 937			}
 938		}
 939		Collections.sort(list, new Comparator<Conversation>() {
 940			@Override
 941			public int compare(Conversation lhs, Conversation rhs) {
 942				Message left = lhs.getLatestMessage();
 943				Message right = rhs.getLatestMessage();
 944				if (left.getTimeSent() > right.getTimeSent()) {
 945					return -1;
 946				} else if (left.getTimeSent() < right.getTimeSent()) {
 947					return 1;
 948				} else {
 949					return 0;
 950				}
 951			}
 952		});
 953	}
 954
 955	public int loadMoreMessages(Conversation conversation, long timestamp) {
 956		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 957				timestamp);
 958		for (Message message : messages) {
 959			message.setConversation(conversation);
 960		}
 961		conversation.addAll(0, messages);
 962		return messages.size();
 963	}
 964
 965	public List<Account> getAccounts() {
 966		return this.accounts;
 967	}
 968
 969	public Conversation find(List<Conversation> haystack, Contact contact) {
 970		for (Conversation conversation : haystack) {
 971			if (conversation.getContact() == contact) {
 972				return conversation;
 973			}
 974		}
 975		return null;
 976	}
 977
 978	public Conversation find(final List<Conversation> haystack,
 979			final Account account,
 980			final Jid jid) {
 981		if (jid == null ) {
 982			return null;
 983		}
 984		for (Conversation conversation : haystack) {
 985			if ((account == null || conversation.getAccount() == account)
 986					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 987				return conversation;
 988					}
 989		}
 990		return null;
 991	}
 992
 993	public Conversation findOrCreateConversation(final Account account, final Jid jid,
 994			final boolean muc) {
 995		synchronized (this.conversations) {
 996			Conversation conversation = find(account, jid);
 997			if (conversation != null) {
 998				return conversation;
 999			}
1000			conversation = databaseBackend.findConversation(account, jid);
1001			if (conversation != null) {
1002				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1003				conversation.setAccount(account);
1004				if (muc) {
1005					conversation.setMode(Conversation.MODE_MULTI);
1006				} else {
1007					conversation.setMode(Conversation.MODE_SINGLE);
1008				}
1009				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1010				this.databaseBackend.updateConversation(conversation);
1011			} else {
1012				String conversationName;
1013				Contact contact = account.getRoster().getContact(jid);
1014				if (contact != null) {
1015					conversationName = contact.getDisplayName();
1016				} else {
1017					conversationName = jid.getLocalpart();
1018				}
1019				if (muc) {
1020					conversation = new Conversation(conversationName, account, jid,
1021							Conversation.MODE_MULTI);
1022				} else {
1023					conversation = new Conversation(conversationName, account, jid,
1024							Conversation.MODE_SINGLE);
1025				}
1026				this.databaseBackend.createConversation(conversation);
1027			}
1028			this.conversations.add(conversation);
1029			updateConversationUi();
1030			return conversation;
1031		}
1032	}
1033
1034	public void archiveConversation(Conversation conversation) {
1035		synchronized (this.conversations) {
1036			if (conversation.getMode() == Conversation.MODE_MULTI) {
1037				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1038					Bookmark bookmark = conversation.getBookmark();
1039					if (bookmark != null && bookmark.autojoin()) {
1040						bookmark.setAutojoin(false);
1041						pushBookmarks(bookmark.getAccount());
1042					}
1043				}
1044				leaveMuc(conversation);
1045			} else {
1046				conversation.endOtrIfNeeded();
1047			}
1048			this.databaseBackend.updateConversation(conversation);
1049			this.conversations.remove(conversation);
1050			updateConversationUi();
1051		}
1052	}
1053
1054	public void clearConversationHistory(Conversation conversation) {
1055		this.databaseBackend.deleteMessagesInConversation(conversation);
1056		conversation.getMessages().clear();
1057		updateConversationUi();
1058	}
1059
1060	public void createAccount(Account account) {
1061		account.initOtrEngine(this);
1062		databaseBackend.createAccount(account);
1063		this.accounts.add(account);
1064		this.reconnectAccount(account, false);
1065		updateAccountUi();
1066	}
1067
1068	public void updateAccount(Account account) {
1069		this.statusListener.onStatusChanged(account);
1070		databaseBackend.updateAccount(account);
1071		reconnectAccount(account, false);
1072		updateAccountUi();
1073		getNotificationService().updateErrorNotification();
1074	}
1075
1076	public void deleteAccount(Account account) {
1077		synchronized (this.conversations) {
1078			for (Conversation conversation : conversations) {
1079				if (conversation.getAccount() == account) {
1080					if (conversation.getMode() == Conversation.MODE_MULTI) {
1081						leaveMuc(conversation);
1082					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1083						conversation.endOtrIfNeeded();
1084					}
1085					conversations.remove(conversation);
1086				}
1087			}
1088			if (account.getXmppConnection() != null) {
1089				this.disconnect(account, true);
1090			}
1091			databaseBackend.deleteAccount(account);
1092			this.accounts.remove(account);
1093			updateAccountUi();
1094			getNotificationService().updateErrorNotification();
1095		}
1096	}
1097
1098	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1099		synchronized (this) {
1100			if (checkListeners()) {
1101				switchToForeground();
1102			}
1103			this.mOnConversationUpdate = listener;
1104			this.mNotificationService.setIsInForeground(true);
1105			if (this.convChangedListenerCount < 2) {
1106				this.convChangedListenerCount++;
1107			}
1108		}
1109	}
1110
1111	public void removeOnConversationListChangedListener() {
1112		synchronized (this) {
1113			this.convChangedListenerCount--;
1114			if (this.convChangedListenerCount <= 0) {
1115				this.convChangedListenerCount = 0;
1116				this.mOnConversationUpdate = null;
1117				this.mNotificationService.setIsInForeground(false);
1118				if (checkListeners()) {
1119					switchToBackground();
1120				}
1121			}
1122		}
1123	}
1124
1125	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1126		synchronized (this) {
1127			if (checkListeners()) {
1128				switchToForeground();
1129			}
1130			this.mOnAccountUpdate = listener;
1131			if (this.accountChangedListenerCount < 2) {
1132				this.accountChangedListenerCount++;
1133			}
1134		}
1135	}
1136
1137	public void removeOnAccountListChangedListener() {
1138		synchronized (this) {
1139			this.accountChangedListenerCount--;
1140			if (this.accountChangedListenerCount <= 0) {
1141				this.mOnAccountUpdate = null;
1142				this.accountChangedListenerCount = 0;
1143				if (checkListeners()) {
1144					switchToBackground();
1145				}
1146			}
1147		}
1148	}
1149
1150	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1151		synchronized (this) {
1152			if (checkListeners()) {
1153				switchToForeground();
1154			}
1155			this.mOnRosterUpdate = listener;
1156			if (this.rosterChangedListenerCount < 2) {
1157				this.rosterChangedListenerCount++;
1158			}
1159		}
1160	}
1161
1162	public void removeOnRosterUpdateListener() {
1163		synchronized (this) {
1164			this.rosterChangedListenerCount--;
1165			if (this.rosterChangedListenerCount <= 0) {
1166				this.rosterChangedListenerCount = 0;
1167				this.mOnRosterUpdate = null;
1168				if (checkListeners()) {
1169					switchToBackground();
1170				}
1171			}
1172		}
1173	}
1174
1175	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1176		synchronized (this) {
1177			if (checkListeners()) {
1178				switchToForeground();
1179			}
1180			this.mOnMucRosterUpdate = listener;
1181			if (this.mucRosterChangedListenerCount < 2) {
1182				this.mucRosterChangedListenerCount++;
1183			}
1184		}
1185	}
1186
1187	public void removeOnMucRosterUpdateListener() {
1188		synchronized (this) {
1189			this.mucRosterChangedListenerCount--;
1190			if (this.mucRosterChangedListenerCount <= 0) {
1191				this.mucRosterChangedListenerCount = 0;
1192				this.mOnMucRosterUpdate = null;
1193				if (checkListeners()) {
1194					switchToBackground();
1195				}
1196			}
1197		}
1198	}
1199
1200	private boolean checkListeners() {
1201		return (this.mOnAccountUpdate == null
1202				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1203	}
1204
1205	private void switchToForeground() {
1206		for (Account account : getAccounts()) {
1207			if (account.getStatus() == Account.State.ONLINE) {
1208				XmppConnection connection = account.getXmppConnection();
1209				if (connection != null && connection.getFeatures().csi()) {
1210					connection.sendActive();
1211				}
1212			}
1213		}
1214		Log.d(Config.LOGTAG, "app switched into foreground");
1215	}
1216
1217	private void switchToBackground() {
1218		for (Account account : getAccounts()) {
1219			if (account.getStatus() == Account.State.ONLINE) {
1220				XmppConnection connection = account.getXmppConnection();
1221				if (connection != null && connection.getFeatures().csi()) {
1222					connection.sendInactive();
1223				}
1224			}
1225		}
1226		this.mNotificationService.setIsInForeground(false);
1227		Log.d(Config.LOGTAG, "app switched into background");
1228	}
1229
1230	public void connectMultiModeConversations(Account account) {
1231		List<Conversation> conversations = getConversations();
1232		for (Conversation conversation : conversations) {
1233			if ((conversation.getMode() == Conversation.MODE_MULTI)
1234					&& (conversation.getAccount() == account)) {
1235				joinMuc(conversation);
1236					}
1237		}
1238	}
1239
1240	public void joinMuc(Conversation conversation) {
1241		Account account = conversation.getAccount();
1242		account.pendingConferenceJoins.remove(conversation);
1243		account.pendingConferenceLeaves.remove(conversation);
1244		if (account.getStatus() == Account.State.ONLINE) {
1245			final String nick = conversation.getMucOptions().getProposedNick();
1246			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1247			if (joinJid == null) {
1248				return; //safety net
1249			}
1250			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1251			PresencePacket packet = new PresencePacket();
1252			packet.setFrom(conversation.getAccount().getJid());
1253			packet.setTo(joinJid);
1254			Element x = new Element("x");
1255			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1256			if (conversation.getMucOptions().getPassword() != null) {
1257				Element password = x.addChild("password");
1258				password.setContent(conversation.getMucOptions().getPassword());
1259			}
1260			String sig = account.getPgpSignature();
1261			if (sig != null) {
1262				packet.addChild("status").setContent("online");
1263				packet.addChild("x", "jabber:x:signed").setContent(sig);
1264			}
1265			if (conversation.getMessages().size() != 0) {
1266				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1267						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1268				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1269				Date date = new Date(conversation.getLatestMessage()
1270						.getTimeSent() + 1000);
1271				x.addChild("history").setAttribute("since",
1272						mDateFormat.format(date));
1273			}
1274			packet.addChild(x);
1275			sendPresencePacket(account, packet);
1276			if (!joinJid.equals(conversation.getContactJid())) {
1277				conversation.setContactJid(joinJid);
1278				databaseBackend.updateConversation(conversation);
1279			}
1280		} else {
1281			account.pendingConferenceJoins.add(conversation);
1282		}
1283	}
1284
1285	public void providePasswordForMuc(Conversation conversation, String password) {
1286		if (conversation.getMode() == Conversation.MODE_MULTI) {
1287			conversation.getMucOptions().setPassword(password);
1288			if (conversation.getBookmark() != null) {
1289				conversation.getBookmark().setAutojoin(true);
1290				pushBookmarks(conversation.getAccount());
1291			}
1292			databaseBackend.updateConversation(conversation);
1293			joinMuc(conversation);
1294		}
1295	}
1296
1297	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1298		final MucOptions options = conversation.getMucOptions();
1299		final Jid joinJid = options.createJoinJid(nick);
1300		if (options.online()) {
1301			Account account = conversation.getAccount();
1302			options.setOnRenameListener(new OnRenameListener() {
1303
1304				@Override
1305				public void onSuccess() {
1306					conversation.setContactJid(joinJid);
1307					databaseBackend.updateConversation(conversation);
1308					Bookmark bookmark = conversation.getBookmark();
1309					if (bookmark != null) {
1310						bookmark.setNick(nick);
1311						pushBookmarks(bookmark.getAccount());
1312					}
1313					callback.success(conversation);
1314				}
1315
1316				@Override
1317				public void onFailure() {
1318					callback.error(R.string.nick_in_use,conversation);
1319				}
1320			});
1321
1322			PresencePacket packet = new PresencePacket();
1323			packet.setTo(joinJid);
1324			packet.setFrom(conversation.getAccount().getJid());
1325
1326			String sig = account.getPgpSignature();
1327			if (sig != null) {
1328				packet.addChild("status").setContent("online");
1329				packet.addChild("x", "jabber:x:signed").setContent(sig);
1330			}
1331			sendPresencePacket(account, packet);
1332		} else {
1333			conversation.setContactJid(joinJid);
1334			databaseBackend.updateConversation(conversation);
1335			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1336				Bookmark bookmark = conversation.getBookmark();
1337				if (bookmark != null) {
1338					bookmark.setNick(nick);
1339					pushBookmarks(bookmark.getAccount());
1340				}
1341				joinMuc(conversation);
1342			}
1343		}
1344	}
1345
1346	public void leaveMuc(Conversation conversation) {
1347		Account account = conversation.getAccount();
1348		account.pendingConferenceJoins.remove(conversation);
1349		account.pendingConferenceLeaves.remove(conversation);
1350		if (account.getStatus() == Account.State.ONLINE) {
1351			PresencePacket packet = new PresencePacket();
1352			packet.setTo(conversation.getContactJid());
1353			packet.setFrom(conversation.getAccount().getJid());
1354			packet.setAttribute("type", "unavailable");
1355			sendPresencePacket(conversation.getAccount(), packet);
1356			conversation.getMucOptions().setOffline();
1357			conversation.deregisterWithBookmark();
1358			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1359					+ ": leaving muc " + conversation.getContactJid());
1360		} else {
1361			account.pendingConferenceLeaves.add(conversation);
1362		}
1363	}
1364
1365	private String findConferenceServer(final Account account) {
1366		String server;
1367		if (account.getXmppConnection() != null) {
1368			server = account.getXmppConnection().getMucServer();
1369			if (server != null) {
1370				return server;
1371			}
1372		}
1373		for(Account other : getAccounts()) {
1374			if (other != account && other.getXmppConnection() != null) {
1375				server = other.getXmppConnection().getMucServer();
1376				if (server != null) {
1377					return server;
1378				}
1379			}
1380		}
1381		return null;
1382	}
1383
1384	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1385		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1386		if (account.getStatus() == Account.State.ONLINE) {
1387			try {
1388				String server = findConferenceServer(account);
1389				if (server == null) {
1390					if (callback != null) {
1391						callback.error(R.string.no_conference_server_found,null);
1392					}
1393					return;
1394				}
1395				String name = new BigInteger(75,getRNG()).toString(32);
1396				Jid jid = Jid.fromParts(name,server,null);
1397				final Conversation conversation = findOrCreateConversation(account, jid, true);
1398				joinMuc(conversation);
1399				Bundle options = new Bundle();
1400				options.putString("muc#roomconfig_persistentroom", "1");
1401				options.putString("muc#roomconfig_membersonly", "1");
1402				options.putString("muc#roomconfig_publicroom", "0");
1403				options.putString("muc#roomconfig_whois", "anyone");
1404				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1405					@Override
1406					public void onPushSucceeded() {
1407						for(Jid invite : jids) {
1408							invite(conversation,invite);
1409						}
1410						if (callback != null) {
1411							callback.success(conversation);
1412						}
1413					}
1414
1415					@Override
1416					public void onPushFailed() {
1417						if (callback != null) {
1418							callback.error(R.string.conference_creation_failed, conversation);
1419						}
1420					}
1421				});
1422
1423			} catch (InvalidJidException e) {
1424				if (callback != null) {
1425					callback.error(R.string.conference_creation_failed, null);
1426				}
1427			}
1428		} else {
1429			if (callback != null) {
1430				callback.error(R.string.not_connected_try_again,null);
1431			}
1432		}
1433	}
1434
1435	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1436		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1437		request.setTo(conversation.getContactJid().toBareJid());
1438		request.query("http://jabber.org/protocol/muc#owner");
1439		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1440			@Override
1441			public void onIqPacketReceived(Account account, IqPacket packet) {
1442				if (packet.getType() != IqPacket.TYPE_ERROR) {
1443					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1444					for (Field field : data.getFields()) {
1445						if (options.containsKey(field.getName())) {
1446							field.setValue(options.getString(field.getName()));
1447						}
1448					}
1449					data.submit();
1450					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1451					set.setTo(conversation.getContactJid().toBareJid());
1452					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1453					sendIqPacket(account, set, new OnIqPacketReceived() {
1454						@Override
1455						public void onIqPacketReceived(Account account, IqPacket packet) {
1456							if (packet.getType() == IqPacket.TYPE_RESULT) {
1457								if (callback != null) {
1458									callback.onPushSucceeded();
1459								}
1460							} else {
1461								if (callback != null) {
1462									callback.onPushFailed();
1463								}
1464							}
1465						}
1466					});
1467				} else {
1468					if (callback != null) {
1469						callback.onPushFailed();
1470					}
1471				}
1472			}
1473		});
1474	}
1475
1476	public void disconnect(Account account, boolean force) {
1477		if ((account.getStatus() == Account.State.ONLINE)
1478				|| (account.getStatus() == Account.State.DISABLED)) {
1479			if (!force) {
1480				List<Conversation> conversations = getConversations();
1481				for (Conversation conversation : conversations) {
1482					if (conversation.getAccount() == account) {
1483						if (conversation.getMode() == Conversation.MODE_MULTI) {
1484							leaveMuc(conversation);
1485						} else {
1486							if (conversation.endOtrIfNeeded()) {
1487								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1488										+ ": ended otr session with "
1489										+ conversation.getContactJid());
1490							}
1491						}
1492					}
1493				}
1494			}
1495			account.getXmppConnection().disconnect(force);
1496				}
1497	}
1498
1499	@Override
1500	public IBinder onBind(Intent intent) {
1501		return mBinder;
1502	}
1503
1504	public void updateMessage(Message message) {
1505		databaseBackend.updateMessage(message);
1506		updateConversationUi();
1507	}
1508
1509	protected void syncDirtyContacts(Account account) {
1510		for (Contact contact : account.getRoster().getContacts()) {
1511			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1512				pushContactToServer(contact);
1513			}
1514			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1515				deleteContactOnServer(contact);
1516			}
1517		}
1518	}
1519
1520	public void createContact(Contact contact) {
1521		SharedPreferences sharedPref = getPreferences();
1522		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1523		if (autoGrant) {
1524			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1525			contact.setOption(Contact.Options.ASKING);
1526		}
1527		pushContactToServer(contact);
1528	}
1529
1530	public void onOtrSessionEstablished(Conversation conversation) {
1531		Account account = conversation.getAccount();
1532		List<Message> messages = conversation.getMessages();
1533		Session otrSession = conversation.getOtrSession();
1534		Log.d(Config.LOGTAG,
1535				account.getJid().toBareJid() + " otr session established with "
1536				+ conversation.getContactJid() + "/"
1537				+ otrSession.getSessionID().getUserID());
1538		for (Message msg : messages) {
1539			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1540					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1541				SessionID id = otrSession.getSessionID();
1542				try {
1543					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1544				} catch (InvalidJidException e) {
1545					break;
1546				}
1547				if (msg.getType() == Message.TYPE_TEXT) {
1548					MessagePacket outPacket = mMessageGenerator
1549						.generateOtrChat(msg, true);
1550					if (outPacket != null) {
1551						msg.setStatus(Message.STATUS_SEND);
1552						databaseBackend.updateMessage(msg);
1553						sendMessagePacket(account, outPacket);
1554					}
1555				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1556					mJingleConnectionManager.createNewConnection(msg);
1557				}
1558					}
1559		}
1560		updateConversationUi();
1561	}
1562
1563	public boolean renewSymmetricKey(Conversation conversation) {
1564		Account account = conversation.getAccount();
1565		byte[] symmetricKey = new byte[32];
1566		this.mRandom.nextBytes(symmetricKey);
1567		Session otrSession = conversation.getOtrSession();
1568		if (otrSession != null) {
1569			MessagePacket packet = new MessagePacket();
1570			packet.setType(MessagePacket.TYPE_CHAT);
1571			packet.setFrom(account.getJid());
1572			packet.addChild("private", "urn:xmpp:carbons:2");
1573			packet.addChild("no-copy", "urn:xmpp:hints");
1574			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1575					+ otrSession.getSessionID().getUserID());
1576			try {
1577				packet.setBody(otrSession
1578						.transformSending(CryptoHelper.FILETRANSFER
1579							+ CryptoHelper.bytesToHex(symmetricKey)));
1580				sendMessagePacket(account, packet);
1581				conversation.setSymmetricKey(symmetricKey);
1582				return true;
1583			} catch (OtrException e) {
1584				return false;
1585			}
1586		}
1587		return false;
1588	}
1589
1590	public void pushContactToServer(Contact contact) {
1591		contact.resetOption(Contact.Options.DIRTY_DELETE);
1592		contact.setOption(Contact.Options.DIRTY_PUSH);
1593		Account account = contact.getAccount();
1594		if (account.getStatus() == Account.State.ONLINE) {
1595			boolean ask = contact.getOption(Contact.Options.ASKING);
1596			boolean sendUpdates = contact
1597				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1598				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1599			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1600			iq.query("jabber:iq:roster").addChild(contact.asElement());
1601			account.getXmppConnection().sendIqPacket(iq, null);
1602			if (sendUpdates) {
1603				sendPresencePacket(account,
1604						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1605			}
1606			if (ask) {
1607				sendPresencePacket(account,
1608						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1609			}
1610		}
1611	}
1612
1613	public void publishAvatar(Account account, Uri image,
1614			final UiCallback<Avatar> callback) {
1615		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1616		final int size = Config.AVATAR_SIZE;
1617		final Avatar avatar = getFileBackend()
1618			.getPepAvatar(image, size, format);
1619		if (avatar != null) {
1620			avatar.height = size;
1621			avatar.width = size;
1622			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1623				avatar.type = "image/webp";
1624			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1625				avatar.type = "image/jpeg";
1626			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1627				avatar.type = "image/png";
1628			}
1629			if (!getFileBackend().save(avatar)) {
1630				callback.error(R.string.error_saving_avatar, avatar);
1631				return;
1632			}
1633			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1634			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1635
1636				@Override
1637				public void onIqPacketReceived(Account account, IqPacket result) {
1638					if (result.getType() == IqPacket.TYPE_RESULT) {
1639						IqPacket packet = XmppConnectionService.this.mIqGenerator
1640							.publishAvatarMetadata(avatar);
1641						sendIqPacket(account, packet, new OnIqPacketReceived() {
1642
1643							@Override
1644							public void onIqPacketReceived(Account account,
1645									IqPacket result) {
1646								if (result.getType() == IqPacket.TYPE_RESULT) {
1647									if (account.setAvatar(avatar.getFilename())) {
1648										databaseBackend.updateAccount(account);
1649									}
1650									callback.success(avatar);
1651								} else {
1652									callback.error(
1653											R.string.error_publish_avatar_server_reject,
1654											avatar);
1655								}
1656							}
1657						});
1658					} else {
1659						callback.error(
1660								R.string.error_publish_avatar_server_reject,
1661								avatar);
1662					}
1663				}
1664			});
1665		} else {
1666			callback.error(R.string.error_publish_avatar_converting, null);
1667		}
1668	}
1669
1670	public void fetchAvatar(Account account, Avatar avatar) {
1671		fetchAvatar(account, avatar, null);
1672	}
1673
1674	public void fetchAvatar(Account account, final Avatar avatar,
1675			final UiCallback<Avatar> callback) {
1676		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1677		sendIqPacket(account, packet, new OnIqPacketReceived() {
1678
1679			@Override
1680			public void onIqPacketReceived(Account account, IqPacket result) {
1681				final String ERROR = account.getJid().toBareJid()
1682						+ ": fetching avatar for " + avatar.owner + " failed ";
1683				if (result.getType() == IqPacket.TYPE_RESULT) {
1684					avatar.image = mIqParser.avatarData(result);
1685					if (avatar.image != null) {
1686						if (getFileBackend().save(avatar)) {
1687							if (account.getJid().toBareJid().equals(avatar.owner)) {
1688								if (account.setAvatar(avatar.getFilename())) {
1689									databaseBackend.updateAccount(account);
1690								}
1691								getAvatarService().clear(account);
1692								updateConversationUi();
1693								updateAccountUi();
1694							} else {
1695								Contact contact = account.getRoster()
1696										.getContact(avatar.owner);
1697								contact.setAvatar(avatar.getFilename());
1698								getAvatarService().clear(contact);
1699								updateConversationUi();
1700								updateRosterUi();
1701							}
1702							if (callback != null) {
1703								callback.success(avatar);
1704							}
1705							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1706									+ ": succesfully fetched avatar for "
1707									+ avatar.owner);
1708							return;
1709						}
1710					} else {
1711
1712						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1713					}
1714				} else {
1715					Element error = result.findChild("error");
1716					if (error == null) {
1717						Log.d(Config.LOGTAG, ERROR + "(server error)");
1718					} else {
1719						Log.d(Config.LOGTAG, ERROR + error.toString());
1720					}
1721				}
1722				if (callback != null) {
1723					callback.error(0, null);
1724				}
1725
1726			}
1727		});
1728	}
1729
1730	public void checkForAvatar(Account account,
1731			final UiCallback<Avatar> callback) {
1732		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1733		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1734
1735			@Override
1736			public void onIqPacketReceived(Account account, IqPacket packet) {
1737				if (packet.getType() == IqPacket.TYPE_RESULT) {
1738					Element pubsub = packet.findChild("pubsub",
1739							"http://jabber.org/protocol/pubsub");
1740					if (pubsub != null) {
1741						Element items = pubsub.findChild("items");
1742						if (items != null) {
1743							Avatar avatar = Avatar.parseMetadata(items);
1744							if (avatar != null) {
1745								avatar.owner = account.getJid().toBareJid();
1746								if (fileBackend.isAvatarCached(avatar)) {
1747									if (account.setAvatar(avatar.getFilename())) {
1748										databaseBackend.updateAccount(account);
1749									}
1750									getAvatarService().clear(account);
1751									callback.success(avatar);
1752								} else {
1753									fetchAvatar(account, avatar, callback);
1754								}
1755								return;
1756							}
1757						}
1758					}
1759				}
1760				callback.error(0, null);
1761			}
1762		});
1763	}
1764
1765	public void deleteContactOnServer(Contact contact) {
1766		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1767		contact.resetOption(Contact.Options.DIRTY_PUSH);
1768		contact.setOption(Contact.Options.DIRTY_DELETE);
1769		Account account = contact.getAccount();
1770		if (account.getStatus() == Account.State.ONLINE) {
1771			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1772			Element item = iq.query("jabber:iq:roster").addChild("item");
1773			item.setAttribute("jid", contact.getJid().toString());
1774			item.setAttribute("subscription", "remove");
1775			account.getXmppConnection().sendIqPacket(iq, null);
1776		}
1777	}
1778
1779	public void updateConversation(Conversation conversation) {
1780		this.databaseBackend.updateConversation(conversation);
1781	}
1782
1783	public void reconnectAccount(final Account account, final boolean force) {
1784		new Thread(new Runnable() {
1785
1786			@Override
1787			public void run() {
1788				if (account.getXmppConnection() != null) {
1789					disconnect(account, force);
1790				}
1791				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1792					if (account.getXmppConnection() == null) {
1793						account.setXmppConnection(createConnection(account));
1794					}
1795					Thread thread = new Thread(account.getXmppConnection());
1796					thread.start();
1797					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1798							false);
1799				} else {
1800					account.getRoster().clearPresences();
1801					account.setXmppConnection(null);
1802				}
1803			}
1804		}).start();
1805	}
1806
1807	public void invite(Conversation conversation, Jid contact) {
1808		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1809		sendMessagePacket(conversation.getAccount(), packet);
1810	}
1811
1812	public void resetSendingToWaiting(Account account) {
1813		for (Conversation conversation : getConversations()) {
1814			if (conversation.getAccount() == account) {
1815				for (Message message : conversation.getMessages()) {
1816					if (message.getType() != Message.TYPE_IMAGE
1817							&& message.getStatus() == Message.STATUS_UNSEND) {
1818						markMessage(message, Message.STATUS_WAITING);
1819							}
1820				}
1821			}
1822		}
1823	}
1824
1825	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1826			final int status) {
1827		if (uuid == null) {
1828			return false;
1829		} else {
1830			for (Conversation conversation : getConversations()) {
1831				if (conversation.getContactJid().equals(recipient)
1832						&& conversation.getAccount().equals(account)) {
1833					return markMessage(conversation, uuid, status);
1834						}
1835			}
1836			return false;
1837		}
1838	}
1839
1840	public boolean markMessage(Conversation conversation, String uuid,
1841			int status) {
1842		if (uuid == null) {
1843			return false;
1844		} else {
1845			for (Message message : conversation.getMessages()) {
1846				if (uuid.equals(message.getUuid())
1847						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1848							.equals(message.getRemoteMsgId()))) {
1849					markMessage(message, status);
1850					return true;
1851							}
1852			}
1853			return false;
1854		}
1855	}
1856
1857	public void markMessage(Message message, int status) {
1858		if (status == Message.STATUS_SEND_FAILED
1859				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1860					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1861			return;
1862					}
1863		message.setStatus(status);
1864		databaseBackend.updateMessage(message);
1865		updateConversationUi();
1866	}
1867
1868	public SharedPreferences getPreferences() {
1869		return PreferenceManager
1870			.getDefaultSharedPreferences(getApplicationContext());
1871	}
1872
1873	public boolean forceEncryption() {
1874		return getPreferences().getBoolean("force_encryption", false);
1875	}
1876
1877	public boolean confirmMessages() {
1878		return getPreferences().getBoolean("confirm_messages", true);
1879	}
1880
1881	public boolean saveEncryptedMessages() {
1882		return !getPreferences().getBoolean("dont_save_encrypted", false);
1883	}
1884
1885	public boolean indicateReceived() {
1886		return getPreferences().getBoolean("indicate_received", false);
1887	}
1888
1889	public void updateConversationUi() {
1890		if (mOnConversationUpdate != null) {
1891			mOnConversationUpdate.onConversationUpdate();
1892		}
1893	}
1894
1895	public void updateAccountUi() {
1896		if (mOnAccountUpdate != null) {
1897			mOnAccountUpdate.onAccountUpdate();
1898		}
1899	}
1900
1901	public void updateRosterUi() {
1902		if (mOnRosterUpdate != null) {
1903			mOnRosterUpdate.onRosterUpdate();
1904		}
1905	}
1906
1907	public void updateMucRosterUi() {
1908		if (mOnMucRosterUpdate != null) {
1909			mOnMucRosterUpdate.onMucRosterUpdate();
1910		}
1911	}
1912
1913	public Account findAccountByJid(final Jid accountJid) {
1914		for (Account account : this.accounts) {
1915			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1916				return account;
1917			}
1918		}
1919		return null;
1920	}
1921
1922	public Conversation findConversationByUuid(String uuid) {
1923		for (Conversation conversation : getConversations()) {
1924			if (conversation.getUuid().equals(uuid)) {
1925				return conversation;
1926			}
1927		}
1928		return null;
1929	}
1930
1931	public void markRead(Conversation conversation, boolean calledByUi) {
1932		mNotificationService.clear(conversation);
1933		final Message markable = conversation.getLatestMarkableMessage();
1934		conversation.markRead();
1935		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1936			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1937			Account account = conversation.getAccount();
1938			final Jid to = markable.getCounterpart();
1939			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1940			this.sendMessagePacket(conversation.getAccount(),packet);
1941		}
1942		if (!calledByUi) {
1943			updateConversationUi();
1944		}
1945	}
1946
1947	public void failWaitingOtrMessages(Conversation conversation) {
1948		for (Message message : conversation.getMessages()) {
1949			if (message.getEncryption() == Message.ENCRYPTION_OTR
1950					&& message.getStatus() == Message.STATUS_WAITING) {
1951				markMessage(message, Message.STATUS_SEND_FAILED);
1952					}
1953		}
1954	}
1955
1956	public SecureRandom getRNG() {
1957		return this.mRandom;
1958	}
1959
1960	public MemorizingTrustManager getMemorizingTrustManager() {
1961		return this.mMemorizingTrustManager;
1962	}
1963
1964	public PowerManager getPowerManager() {
1965		return this.pm;
1966	}
1967
1968	public LruCache<String, Bitmap> getBitmapCache() {
1969		return this.mBitmapCache;
1970	}
1971
1972	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1973		if (account.getStatus() == Account.State.ONLINE) {
1974			MessagePacket error = this.mMessageGenerator
1975				.generateNotAcceptable(packet);
1976			sendMessagePacket(account, error);
1977		}
1978	}
1979
1980	public void syncRosterToDisk(final Account account) {
1981		new Thread(new Runnable() {
1982
1983			@Override
1984			public void run() {
1985				databaseBackend.writeRoster(account.getRoster());
1986			}
1987		}).start();
1988
1989	}
1990
1991	public List<String> getKnownHosts() {
1992		List<String> hosts = new ArrayList<>();
1993		for (Account account : getAccounts()) {
1994			if (!hosts.contains(account.getServer().toString())) {
1995				hosts.add(account.getServer().toString());
1996			}
1997			for (Contact contact : account.getRoster().getContacts()) {
1998				if (contact.showInRoster()) {
1999					final String server = contact.getServer().toString();
2000					if (server != null && !hosts.contains(server)) {
2001						hosts.add(server);
2002					}
2003				}
2004			}
2005		}
2006		return hosts;
2007	}
2008
2009	public List<String> getKnownConferenceHosts() {
2010		ArrayList<String> mucServers = new ArrayList<>();
2011		for (Account account : accounts) {
2012			if (account.getXmppConnection() != null) {
2013				String server = account.getXmppConnection().getMucServer();
2014				if (server != null && !mucServers.contains(server)) {
2015					mucServers.add(server);
2016				}
2017			}
2018		}
2019		return mucServers;
2020	}
2021
2022	public void sendMessagePacket(Account account, MessagePacket packet) {
2023		XmppConnection connection = account.getXmppConnection();
2024		if (connection != null) {
2025			connection.sendMessagePacket(packet);
2026		}
2027	}
2028
2029	public void sendPresencePacket(Account account, PresencePacket packet) {
2030		XmppConnection connection = account.getXmppConnection();
2031		if (connection != null) {
2032			connection.sendPresencePacket(packet);
2033		}
2034	}
2035
2036	public void sendIqPacket(Account account, IqPacket packet,
2037			OnIqPacketReceived callback) {
2038		XmppConnection connection = account.getXmppConnection();
2039		if (connection != null) {
2040			connection.sendIqPacket(packet, callback);
2041		}
2042	}
2043
2044	public MessageGenerator getMessageGenerator() {
2045		return this.mMessageGenerator;
2046	}
2047
2048	public PresenceGenerator getPresenceGenerator() {
2049		return this.mPresenceGenerator;
2050	}
2051
2052	public IqGenerator getIqGenerator() {
2053		return this.mIqGenerator;
2054	}
2055
2056	public JingleConnectionManager getJingleConnectionManager() {
2057		return this.mJingleConnectionManager;
2058	}
2059
2060	public List<Contact> findContacts(Jid jid) {
2061		ArrayList<Contact> contacts = new ArrayList<>();
2062		for (Account account : getAccounts()) {
2063			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2064				Contact contact = account.getRoster().getContactFromRoster(jid);
2065				if (contact != null) {
2066					contacts.add(contact);
2067				}
2068			}
2069		}
2070		return contacts;
2071	}
2072
2073	public NotificationService getNotificationService() {
2074		return this.mNotificationService;
2075	}
2076
2077	public HttpConnectionManager getHttpConnectionManager() {
2078		return this.mHttpConnectionManager;
2079	}
2080
2081	public void resendFailedMessages(Message message) {
2082		List<Message> messages = new ArrayList<>();
2083		Message current = message;
2084		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2085			messages.add(current);
2086			if (current.mergeable(current.next())) {
2087				current = current.next();
2088			} else {
2089				break;
2090			}
2091		}
2092		for (Message msg : messages) {
2093			markMessage(msg, Message.STATUS_WAITING);
2094			this.resendMessage(msg);
2095		}
2096	}
2097
2098	public interface OnConversationUpdate {
2099		public void onConversationUpdate();
2100	}
2101
2102	public interface OnAccountUpdate {
2103		public void onAccountUpdate();
2104	}
2105
2106	public interface OnRosterUpdate {
2107		public void onRosterUpdate();
2108	}
2109
2110	public interface OnMucRosterUpdate {
2111		public void onMucRosterUpdate();
2112	}
2113
2114	private interface OnConferenceOptionsPushed {
2115		public void onPushSucceeded();
2116		public void onPushFailed();
2117	}
2118
2119	public class XmppConnectionBinder extends Binder {
2120		public XmppConnectionService getService() {
2121			return XmppConnectionService.this;
2122		}
2123	}
2124}