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 Integer accountChangedListenerCount = 0;
 213	private OnRosterUpdate mOnRosterUpdate = null;
 214	private Integer rosterChangedListenerCount = 0;
 215	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 216	private Integer 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	private void removeStaleListeners() {
1099		boolean removedListener = false;
1100		synchronized (this.convChangedListenerCount) {
1101			if (this.mOnConversationUpdate != null) {
1102				this.mOnConversationUpdate = null;
1103				this.convChangedListenerCount = 0;
1104				this.mNotificationService.setIsInForeground(false);
1105				removedListener = true;
1106			}
1107		}
1108		synchronized (this.accountChangedListenerCount) {
1109			if (this.mOnAccountUpdate != null) {
1110				this.mOnAccountUpdate = null;
1111				this.accountChangedListenerCount = 0;
1112				removedListener = true;
1113			}
1114		}
1115		synchronized (this.rosterChangedListenerCount) {
1116			if (this.mOnRosterUpdate != null) {
1117				this.mOnRosterUpdate = null;
1118				this.rosterChangedListenerCount = 0;
1119				removedListener = true;
1120			}
1121		}
1122		synchronized (this.mucRosterChangedListenerCount) {
1123			if (this.mOnMucRosterUpdate != null) {
1124				this.mOnMucRosterUpdate = null;
1125				this.mucRosterChangedListenerCount = 0;
1126				removedListener = true;
1127			}
1128		}
1129		if (removedListener) {
1130			final String msg = "removed stale listeners";
1131			Log.d(Config.LOGTAG, msg);
1132			checkListeners();
1133			try {
1134				OutputStream os = openFileOutput("stacktrace.txt", MODE_PRIVATE);
1135				os.write(msg.getBytes());
1136				os.flush();
1137				os.close();
1138			} catch (final FileNotFoundException ignored) {
1139
1140			} catch (final IOException ignored) {
1141			}
1142		}
1143	}
1144
1145	public void setOnConversationListChangedListener(
1146			OnConversationUpdate listener) {
1147		/*if (!isScreenOn()) {
1148			Log.d(Config.LOGTAG,
1149			"ignoring setOnConversationListChangedListener");
1150			return;
1151			}*/
1152		synchronized (this.convChangedListenerCount) {
1153			if (checkListeners()) {
1154				switchToForeground();
1155			}
1156			this.mOnConversationUpdate = listener;
1157			this.mNotificationService.setIsInForeground(true);
1158			this.convChangedListenerCount++;
1159		}
1160			}
1161
1162	public void removeOnConversationListChangedListener() {
1163		synchronized (this.convChangedListenerCount) {
1164			this.convChangedListenerCount--;
1165			if (this.convChangedListenerCount <= 0) {
1166				this.convChangedListenerCount = 0;
1167				this.mOnConversationUpdate = null;
1168				this.mNotificationService.setIsInForeground(false);
1169				if (checkListeners()) {
1170					switchToBackground();
1171				}
1172			}
1173		}
1174	}
1175
1176	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1177		/*if (!isScreenOn()) {
1178			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1179			return;
1180			}*/
1181		synchronized (this.accountChangedListenerCount) {
1182			if (checkListeners()) {
1183				switchToForeground();
1184			}
1185			this.mOnAccountUpdate = listener;
1186			this.accountChangedListenerCount++;
1187		}
1188	}
1189
1190	public void removeOnAccountListChangedListener() {
1191		synchronized (this.accountChangedListenerCount) {
1192			this.accountChangedListenerCount--;
1193			if (this.accountChangedListenerCount <= 0) {
1194				this.mOnAccountUpdate = null;
1195				this.accountChangedListenerCount = 0;
1196				if (checkListeners()) {
1197					switchToBackground();
1198				}
1199			}
1200		}
1201	}
1202
1203	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1204		/*if (!isScreenOn()) {
1205			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1206			return;
1207			}*/
1208		synchronized (this.rosterChangedListenerCount) {
1209			if (checkListeners()) {
1210				switchToForeground();
1211			}
1212			this.mOnRosterUpdate = listener;
1213			this.rosterChangedListenerCount++;
1214		}
1215	}
1216
1217	public void removeOnRosterUpdateListener() {
1218		synchronized (this.rosterChangedListenerCount) {
1219			this.rosterChangedListenerCount--;
1220			if (this.rosterChangedListenerCount <= 0) {
1221				this.rosterChangedListenerCount = 0;
1222				this.mOnRosterUpdate = null;
1223				if (checkListeners()) {
1224					switchToBackground();
1225				}
1226			}
1227		}
1228	}
1229
1230	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1231		synchronized (this.mucRosterChangedListenerCount) {
1232			if (checkListeners()) {
1233				switchToForeground();
1234			}
1235			this.mOnMucRosterUpdate = listener;
1236			this.mucRosterChangedListenerCount++;
1237		}
1238	}
1239
1240	public void removeOnMucRosterUpdateListener() {
1241		synchronized (this.mucRosterChangedListenerCount) {
1242			this.mucRosterChangedListenerCount--;
1243			if (this.mucRosterChangedListenerCount <= 0) {
1244				this.mucRosterChangedListenerCount = 0;
1245				this.mOnMucRosterUpdate = null;
1246				if (checkListeners()) {
1247					switchToBackground();
1248				}
1249			}
1250		}
1251	}
1252
1253	private boolean checkListeners() {
1254		return (this.mOnAccountUpdate == null
1255				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1256	}
1257
1258	private void switchToForeground() {
1259		for (Account account : getAccounts()) {
1260			if (account.getStatus() == Account.State.ONLINE) {
1261				XmppConnection connection = account.getXmppConnection();
1262				if (connection != null && connection.getFeatures().csi()) {
1263					connection.sendActive();
1264				}
1265			}
1266		}
1267		Log.d(Config.LOGTAG, "app switched into foreground");
1268	}
1269
1270	private void switchToBackground() {
1271		for (Account account : getAccounts()) {
1272			if (account.getStatus() == Account.State.ONLINE) {
1273				XmppConnection connection = account.getXmppConnection();
1274				if (connection != null && connection.getFeatures().csi()) {
1275					connection.sendInactive();
1276				}
1277			}
1278		}
1279		this.mNotificationService.setIsInForeground(false);
1280		Log.d(Config.LOGTAG, "app switched into background");
1281	}
1282
1283	private boolean isScreenOn() {
1284		PowerManager pm = (PowerManager) this
1285			.getSystemService(Context.POWER_SERVICE);
1286		return pm.isScreenOn();
1287	}
1288
1289	public void connectMultiModeConversations(Account account) {
1290		List<Conversation> conversations = getConversations();
1291		for (Conversation conversation : conversations) {
1292			if ((conversation.getMode() == Conversation.MODE_MULTI)
1293					&& (conversation.getAccount() == account)) {
1294				joinMuc(conversation);
1295					}
1296		}
1297	}
1298
1299	public void joinMuc(Conversation conversation) {
1300		Account account = conversation.getAccount();
1301		account.pendingConferenceJoins.remove(conversation);
1302		account.pendingConferenceLeaves.remove(conversation);
1303		if (account.getStatus() == Account.State.ONLINE) {
1304			Log.d(Config.LOGTAG,
1305					"joining conversation " + conversation.getContactJid());
1306			String nick = conversation.getMucOptions().getProposedNick();
1307			Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1308			PresencePacket packet = new PresencePacket();
1309			packet.setFrom(conversation.getAccount().getJid());
1310			packet.setTo(joinJid);
1311			Element x = new Element("x");
1312			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1313			if (conversation.getMucOptions().getPassword() != null) {
1314				Element password = x.addChild("password");
1315				password.setContent(conversation.getMucOptions().getPassword());
1316			}
1317			String sig = account.getPgpSignature();
1318			if (sig != null) {
1319				packet.addChild("status").setContent("online");
1320				packet.addChild("x", "jabber:x:signed").setContent(sig);
1321			}
1322			if (conversation.getMessages().size() != 0) {
1323				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1324						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1325				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1326				Date date = new Date(conversation.getLatestMessage()
1327						.getTimeSent() + 1000);
1328				x.addChild("history").setAttribute("since",
1329						mDateFormat.format(date));
1330			}
1331			packet.addChild(x);
1332			sendPresencePacket(account, packet);
1333			if (!joinJid.equals(conversation.getContactJid())) {
1334				conversation.setContactJid(joinJid);
1335				databaseBackend.updateConversation(conversation);
1336			}
1337		} else {
1338			account.pendingConferenceJoins.add(conversation);
1339		}
1340	}
1341
1342	public void providePasswordForMuc(Conversation conversation, String password) {
1343		if (conversation.getMode() == Conversation.MODE_MULTI) {
1344			conversation.getMucOptions().setPassword(password);
1345			if (conversation.getBookmark() != null) {
1346				conversation.getBookmark().setAutojoin(true);
1347				pushBookmarks(conversation.getAccount());
1348			}
1349			databaseBackend.updateConversation(conversation);
1350			joinMuc(conversation);
1351		}
1352	}
1353
1354	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1355		final MucOptions options = conversation.getMucOptions();
1356		final Jid joinJid = options.createJoinJid(nick);
1357		if (options.online()) {
1358			Account account = conversation.getAccount();
1359			options.setOnRenameListener(new OnRenameListener() {
1360
1361				@Override
1362				public void onSuccess() {
1363					conversation.setContactJid(joinJid);
1364					databaseBackend.updateConversation(conversation);
1365					Bookmark bookmark = conversation.getBookmark();
1366					if (bookmark != null) {
1367						bookmark.setNick(nick);
1368						pushBookmarks(bookmark.getAccount());
1369					}
1370					callback.success(conversation);
1371				}
1372
1373				@Override
1374				public void onFailure() {
1375					callback.error(R.string.nick_in_use,conversation);
1376				}
1377			});
1378
1379			PresencePacket packet = new PresencePacket();
1380			packet.setTo(joinJid);
1381			packet.setFrom(conversation.getAccount().getJid());
1382
1383			String sig = account.getPgpSignature();
1384			if (sig != null) {
1385				packet.addChild("status").setContent("online");
1386				packet.addChild("x", "jabber:x:signed").setContent(sig);
1387			}
1388			sendPresencePacket(account, packet);
1389		} else {
1390			conversation.setContactJid(joinJid);
1391			databaseBackend.updateConversation(conversation);
1392			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1393				Bookmark bookmark = conversation.getBookmark();
1394				if (bookmark != null) {
1395					bookmark.setNick(nick);
1396					pushBookmarks(bookmark.getAccount());
1397				}
1398				joinMuc(conversation);
1399			}
1400		}
1401	}
1402
1403	public void leaveMuc(Conversation conversation) {
1404		Account account = conversation.getAccount();
1405		account.pendingConferenceJoins.remove(conversation);
1406		account.pendingConferenceLeaves.remove(conversation);
1407		if (account.getStatus() == Account.State.ONLINE) {
1408			PresencePacket packet = new PresencePacket();
1409			packet.setTo(conversation.getContactJid());
1410			packet.setFrom(conversation.getAccount().getJid());
1411			packet.setAttribute("type", "unavailable");
1412			sendPresencePacket(conversation.getAccount(), packet);
1413			conversation.getMucOptions().setOffline();
1414			conversation.deregisterWithBookmark();
1415			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1416					+ ": leaving muc " + conversation.getContactJid());
1417		} else {
1418			account.pendingConferenceLeaves.add(conversation);
1419		}
1420	}
1421
1422	private String findConferenceServer(final Account account) {
1423		String server;
1424		if (account.getXmppConnection() != null) {
1425			server = account.getXmppConnection().getMucServer();
1426			if (server != null) {
1427				return server;
1428			}
1429		}
1430		for(Account other : getAccounts()) {
1431			if (other != account && other.getXmppConnection() != null) {
1432				server = other.getXmppConnection().getMucServer();
1433				if (server != null) {
1434					return server;
1435				}
1436			}
1437		}
1438		return null;
1439	}
1440
1441	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1442		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1443		if (account.getStatus() == Account.State.ONLINE) {
1444			try {
1445				String server = findConferenceServer(account);
1446				if (server == null) {
1447					if (callback != null) {
1448						callback.error(R.string.no_conference_server_found,null);
1449					}
1450					return;
1451				}
1452				String name = new BigInteger(75,getRNG()).toString(32);
1453				Jid jid = Jid.fromParts(name,server,null);
1454				final Conversation conversation = findOrCreateConversation(account, jid, true);
1455				joinMuc(conversation);
1456				Bundle options = new Bundle();
1457				options.putString("muc#roomconfig_persistentroom", "1");
1458				options.putString("muc#roomconfig_membersonly", "1");
1459				options.putString("muc#roomconfig_publicroom", "0");
1460				options.putString("muc#roomconfig_whois", "anyone");
1461				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1462					@Override
1463					public void onPushSucceeded() {
1464						for(Jid invite : jids) {
1465							invite(conversation,invite);
1466						}
1467						if (callback != null) {
1468							callback.success(conversation);
1469						}
1470					}
1471
1472					@Override
1473					public void onPushFailed() {
1474						if (callback != null) {
1475							callback.error(R.string.conference_creation_failed, conversation);
1476						}
1477					}
1478				});
1479
1480			} catch (InvalidJidException e) {
1481				if (callback != null) {
1482					callback.error(R.string.conference_creation_failed, null);
1483				}
1484			}
1485		} else {
1486			if (callback != null) {
1487				callback.error(R.string.not_connected_try_again,null);
1488			}
1489		}
1490	}
1491
1492	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1493		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1494		request.setTo(conversation.getContactJid().toBareJid());
1495		request.query("http://jabber.org/protocol/muc#owner");
1496		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1497			@Override
1498			public void onIqPacketReceived(Account account, IqPacket packet) {
1499				if (packet.getType() != IqPacket.TYPE_ERROR) {
1500					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1501					for (Field field : data.getFields()) {
1502						if (options.containsKey(field.getName())) {
1503							field.setValue(options.getString(field.getName()));
1504						}
1505					}
1506					data.submit();
1507					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1508					set.setTo(conversation.getContactJid().toBareJid());
1509					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1510					sendIqPacket(account, set, new OnIqPacketReceived() {
1511						@Override
1512						public void onIqPacketReceived(Account account, IqPacket packet) {
1513							if (packet.getType() == IqPacket.TYPE_RESULT) {
1514								if (callback != null) {
1515									callback.onPushSucceeded();
1516								}
1517							} else {
1518								if (callback != null) {
1519									callback.onPushFailed();
1520								}
1521							}
1522						}
1523					});
1524				} else {
1525					if (callback != null) {
1526						callback.onPushFailed();
1527					}
1528				}
1529			}
1530		});
1531	}
1532
1533	public void disconnect(Account account, boolean force) {
1534		if ((account.getStatus() == Account.State.ONLINE)
1535				|| (account.getStatus() == Account.State.DISABLED)) {
1536			if (!force) {
1537				List<Conversation> conversations = getConversations();
1538				for (Conversation conversation : conversations) {
1539					if (conversation.getAccount() == account) {
1540						if (conversation.getMode() == Conversation.MODE_MULTI) {
1541							leaveMuc(conversation);
1542						} else {
1543							if (conversation.endOtrIfNeeded()) {
1544								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1545										+ ": ended otr session with "
1546										+ conversation.getContactJid());
1547							}
1548						}
1549					}
1550				}
1551			}
1552			account.getXmppConnection().disconnect(force);
1553				}
1554	}
1555
1556	@Override
1557	public IBinder onBind(Intent intent) {
1558		return mBinder;
1559	}
1560
1561	public void updateMessage(Message message) {
1562		databaseBackend.updateMessage(message);
1563		updateConversationUi();
1564	}
1565
1566	protected void syncDirtyContacts(Account account) {
1567		for (Contact contact : account.getRoster().getContacts()) {
1568			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1569				pushContactToServer(contact);
1570			}
1571			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1572				deleteContactOnServer(contact);
1573			}
1574		}
1575	}
1576
1577	public void createContact(Contact contact) {
1578		SharedPreferences sharedPref = getPreferences();
1579		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1580		if (autoGrant) {
1581			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1582			contact.setOption(Contact.Options.ASKING);
1583		}
1584		pushContactToServer(contact);
1585	}
1586
1587	public void onOtrSessionEstablished(Conversation conversation) {
1588		Account account = conversation.getAccount();
1589		List<Message> messages = conversation.getMessages();
1590		Session otrSession = conversation.getOtrSession();
1591		Log.d(Config.LOGTAG,
1592				account.getJid().toBareJid() + " otr session established with "
1593				+ conversation.getContactJid() + "/"
1594				+ otrSession.getSessionID().getUserID());
1595		for (Message msg : messages) {
1596			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1597					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1598				SessionID id = otrSession.getSessionID();
1599				try {
1600					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1601				} catch (InvalidJidException e) {
1602					break;
1603				}
1604				if (msg.getType() == Message.TYPE_TEXT) {
1605					MessagePacket outPacket = mMessageGenerator
1606						.generateOtrChat(msg, true);
1607					if (outPacket != null) {
1608						msg.setStatus(Message.STATUS_SEND);
1609						databaseBackend.updateMessage(msg);
1610						sendMessagePacket(account, outPacket);
1611					}
1612				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1613					mJingleConnectionManager.createNewConnection(msg);
1614				}
1615					}
1616		}
1617		updateConversationUi();
1618	}
1619
1620	public boolean renewSymmetricKey(Conversation conversation) {
1621		Account account = conversation.getAccount();
1622		byte[] symmetricKey = new byte[32];
1623		this.mRandom.nextBytes(symmetricKey);
1624		Session otrSession = conversation.getOtrSession();
1625		if (otrSession != null) {
1626			MessagePacket packet = new MessagePacket();
1627			packet.setType(MessagePacket.TYPE_CHAT);
1628			packet.setFrom(account.getJid());
1629			packet.addChild("private", "urn:xmpp:carbons:2");
1630			packet.addChild("no-copy", "urn:xmpp:hints");
1631			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1632					+ otrSession.getSessionID().getUserID());
1633			try {
1634				packet.setBody(otrSession
1635						.transformSending(CryptoHelper.FILETRANSFER
1636							+ CryptoHelper.bytesToHex(symmetricKey)));
1637				sendMessagePacket(account, packet);
1638				conversation.setSymmetricKey(symmetricKey);
1639				return true;
1640			} catch (OtrException e) {
1641				return false;
1642			}
1643		}
1644		return false;
1645	}
1646
1647	public void pushContactToServer(Contact contact) {
1648		contact.resetOption(Contact.Options.DIRTY_DELETE);
1649		contact.setOption(Contact.Options.DIRTY_PUSH);
1650		Account account = contact.getAccount();
1651		if (account.getStatus() == Account.State.ONLINE) {
1652			boolean ask = contact.getOption(Contact.Options.ASKING);
1653			boolean sendUpdates = contact
1654				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1655				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1656			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1657			iq.query("jabber:iq:roster").addChild(contact.asElement());
1658			account.getXmppConnection().sendIqPacket(iq, null);
1659			if (sendUpdates) {
1660				sendPresencePacket(account,
1661						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1662			}
1663			if (ask) {
1664				sendPresencePacket(account,
1665						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1666			}
1667		}
1668	}
1669
1670	public void publishAvatar(Account account, Uri image,
1671			final UiCallback<Avatar> callback) {
1672		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1673		final int size = Config.AVATAR_SIZE;
1674		final Avatar avatar = getFileBackend()
1675			.getPepAvatar(image, size, format);
1676		if (avatar != null) {
1677			avatar.height = size;
1678			avatar.width = size;
1679			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1680				avatar.type = "image/webp";
1681			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1682				avatar.type = "image/jpeg";
1683			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1684				avatar.type = "image/png";
1685			}
1686			if (!getFileBackend().save(avatar)) {
1687				callback.error(R.string.error_saving_avatar, avatar);
1688				return;
1689			}
1690			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1691			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1692
1693				@Override
1694				public void onIqPacketReceived(Account account, IqPacket result) {
1695					if (result.getType() == IqPacket.TYPE_RESULT) {
1696						IqPacket packet = XmppConnectionService.this.mIqGenerator
1697							.publishAvatarMetadata(avatar);
1698						sendIqPacket(account, packet, new OnIqPacketReceived() {
1699
1700							@Override
1701							public void onIqPacketReceived(Account account,
1702									IqPacket result) {
1703								if (result.getType() == IqPacket.TYPE_RESULT) {
1704									if (account.setAvatar(avatar.getFilename())) {
1705										databaseBackend.updateAccount(account);
1706									}
1707									callback.success(avatar);
1708								} else {
1709									callback.error(
1710											R.string.error_publish_avatar_server_reject,
1711											avatar);
1712								}
1713							}
1714						});
1715					} else {
1716						callback.error(
1717								R.string.error_publish_avatar_server_reject,
1718								avatar);
1719					}
1720				}
1721			});
1722		} else {
1723			callback.error(R.string.error_publish_avatar_converting, null);
1724		}
1725	}
1726
1727	public void fetchAvatar(Account account, Avatar avatar) {
1728		fetchAvatar(account, avatar, null);
1729	}
1730
1731	public void fetchAvatar(Account account, final Avatar avatar,
1732			final UiCallback<Avatar> callback) {
1733		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1734		sendIqPacket(account, packet, new OnIqPacketReceived() {
1735
1736			@Override
1737			public void onIqPacketReceived(Account account, IqPacket result) {
1738				final String ERROR = account.getJid().toBareJid()
1739					+ ": fetching avatar for " + avatar.owner + " failed ";
1740				if (result.getType() == IqPacket.TYPE_RESULT) {
1741					avatar.image = mIqParser.avatarData(result);
1742					if (avatar.image != null) {
1743						if (getFileBackend().save(avatar)) {
1744							if (account.getJid().toBareJid().equals(avatar.owner)) {
1745								if (account.setAvatar(avatar.getFilename())) {
1746									databaseBackend.updateAccount(account);
1747								}
1748								getAvatarService().clear(account);
1749								updateConversationUi();
1750								updateAccountUi();
1751							} else {
1752								Contact contact = account.getRoster()
1753									.getContact(avatar.owner);
1754								contact.setAvatar(avatar.getFilename());
1755								getAvatarService().clear(contact);
1756								updateConversationUi();
1757								updateRosterUi();
1758							}
1759							if (callback != null) {
1760								callback.success(avatar);
1761							}
1762							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1763									+ ": succesfully fetched avatar for "
1764									+ avatar.owner);
1765							return;
1766						}
1767					} else {
1768
1769						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1770					}
1771				} else {
1772					Element error = result.findChild("error");
1773					if (error == null) {
1774						Log.d(Config.LOGTAG, ERROR + "(server error)");
1775					} else {
1776						Log.d(Config.LOGTAG, ERROR + error.toString());
1777					}
1778				}
1779				if (callback != null) {
1780					callback.error(0, null);
1781				}
1782
1783			}
1784		});
1785	}
1786
1787	public void checkForAvatar(Account account,
1788			final UiCallback<Avatar> callback) {
1789		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1790		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1791
1792			@Override
1793			public void onIqPacketReceived(Account account, IqPacket packet) {
1794				if (packet.getType() == IqPacket.TYPE_RESULT) {
1795					Element pubsub = packet.findChild("pubsub",
1796							"http://jabber.org/protocol/pubsub");
1797					if (pubsub != null) {
1798						Element items = pubsub.findChild("items");
1799						if (items != null) {
1800							Avatar avatar = Avatar.parseMetadata(items);
1801							if (avatar != null) {
1802								avatar.owner = account.getJid().toBareJid();
1803								if (fileBackend.isAvatarCached(avatar)) {
1804									if (account.setAvatar(avatar.getFilename())) {
1805										databaseBackend.updateAccount(account);
1806									}
1807									getAvatarService().clear(account);
1808									callback.success(avatar);
1809								} else {
1810									fetchAvatar(account, avatar, callback);
1811								}
1812								return;
1813							}
1814						}
1815					}
1816				}
1817				callback.error(0, null);
1818			}
1819		});
1820	}
1821
1822	public void deleteContactOnServer(Contact contact) {
1823		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1824		contact.resetOption(Contact.Options.DIRTY_PUSH);
1825		contact.setOption(Contact.Options.DIRTY_DELETE);
1826		Account account = contact.getAccount();
1827		if (account.getStatus() == Account.State.ONLINE) {
1828			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1829			Element item = iq.query("jabber:iq:roster").addChild("item");
1830			item.setAttribute("jid", contact.getJid().toString());
1831			item.setAttribute("subscription", "remove");
1832			account.getXmppConnection().sendIqPacket(iq, null);
1833		}
1834	}
1835
1836	public void updateConversation(Conversation conversation) {
1837		this.databaseBackend.updateConversation(conversation);
1838	}
1839
1840	public void reconnectAccount(final Account account, final boolean force) {
1841		new Thread(new Runnable() {
1842
1843			@Override
1844			public void run() {
1845				if (account.getXmppConnection() != null) {
1846					disconnect(account, force);
1847				}
1848				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1849					if (account.getXmppConnection() == null) {
1850						account.setXmppConnection(createConnection(account));
1851					}
1852					Thread thread = new Thread(account.getXmppConnection());
1853					thread.start();
1854					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1855							false);
1856				} else {
1857					account.getRoster().clearPresences();
1858					account.setXmppConnection(null);
1859				}
1860			}
1861		}).start();
1862	}
1863
1864	public void invite(Conversation conversation, Jid contact) {
1865		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1866		sendMessagePacket(conversation.getAccount(), packet);
1867	}
1868
1869	public void resetSendingToWaiting(Account account) {
1870		for (Conversation conversation : getConversations()) {
1871			if (conversation.getAccount() == account) {
1872				for (Message message : conversation.getMessages()) {
1873					if (message.getType() != Message.TYPE_IMAGE
1874							&& message.getStatus() == Message.STATUS_UNSEND) {
1875						markMessage(message, Message.STATUS_WAITING);
1876							}
1877				}
1878			}
1879		}
1880	}
1881
1882	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1883			final int status) {
1884		if (uuid == null) {
1885			return false;
1886		} else {
1887			for (Conversation conversation : getConversations()) {
1888				if (conversation.getContactJid().equals(recipient)
1889						&& conversation.getAccount().equals(account)) {
1890					return markMessage(conversation, uuid, status);
1891						}
1892			}
1893			return false;
1894		}
1895	}
1896
1897	public boolean markMessage(Conversation conversation, String uuid,
1898			int status) {
1899		if (uuid == null) {
1900			return false;
1901		} else {
1902			for (Message message : conversation.getMessages()) {
1903				if (uuid.equals(message.getUuid())
1904						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1905							.equals(message.getRemoteMsgId()))) {
1906					markMessage(message, status);
1907					return true;
1908							}
1909			}
1910			return false;
1911		}
1912	}
1913
1914	public void markMessage(Message message, int status) {
1915		if (status == Message.STATUS_SEND_FAILED
1916				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1917					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1918			return;
1919					}
1920		message.setStatus(status);
1921		databaseBackend.updateMessage(message);
1922		updateConversationUi();
1923	}
1924
1925	public SharedPreferences getPreferences() {
1926		return PreferenceManager
1927			.getDefaultSharedPreferences(getApplicationContext());
1928	}
1929
1930	public boolean forceEncryption() {
1931		return getPreferences().getBoolean("force_encryption", false);
1932	}
1933
1934	public boolean confirmMessages() {
1935		return getPreferences().getBoolean("confirm_messages", true);
1936	}
1937
1938	public boolean saveEncryptedMessages() {
1939		return !getPreferences().getBoolean("dont_save_encrypted", false);
1940	}
1941
1942	public boolean indicateReceived() {
1943		return getPreferences().getBoolean("indicate_received", false);
1944	}
1945
1946	public void updateConversationUi() {
1947		if (mOnConversationUpdate != null) {
1948			mOnConversationUpdate.onConversationUpdate();
1949		}
1950	}
1951
1952	public void updateAccountUi() {
1953		if (mOnAccountUpdate != null) {
1954			mOnAccountUpdate.onAccountUpdate();
1955		}
1956	}
1957
1958	public void updateRosterUi() {
1959		if (mOnRosterUpdate != null) {
1960			mOnRosterUpdate.onRosterUpdate();
1961		}
1962	}
1963
1964	public void updateMucRosterUi() {
1965		if (mOnMucRosterUpdate != null) {
1966			mOnMucRosterUpdate.onMucRosterUpdate();
1967		}
1968	}
1969
1970	public Account findAccountByJid(final Jid accountJid) {
1971		for (Account account : this.accounts) {
1972			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1973				return account;
1974			}
1975		}
1976		return null;
1977	}
1978
1979	public Conversation findConversationByUuid(String uuid) {
1980		for (Conversation conversation : getConversations()) {
1981			if (conversation.getUuid().equals(uuid)) {
1982				return conversation;
1983			}
1984		}
1985		return null;
1986	}
1987
1988	public void markRead(Conversation conversation, boolean calledByUi) {
1989		mNotificationService.clear(conversation);
1990		final Message markable = conversation.getLatestMarkableMessage();
1991		conversation.markRead();
1992		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1993			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1994			Account account = conversation.getAccount();
1995			final Jid to = markable.getCounterpart();
1996			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1997			this.sendMessagePacket(conversation.getAccount(),packet);
1998		}
1999		if (!calledByUi) {
2000			updateConversationUi();
2001		}
2002	}
2003
2004	public void failWaitingOtrMessages(Conversation conversation) {
2005		for (Message message : conversation.getMessages()) {
2006			if (message.getEncryption() == Message.ENCRYPTION_OTR
2007					&& message.getStatus() == Message.STATUS_WAITING) {
2008				markMessage(message, Message.STATUS_SEND_FAILED);
2009					}
2010		}
2011	}
2012
2013	public SecureRandom getRNG() {
2014		return this.mRandom;
2015	}
2016
2017	public MemorizingTrustManager getMemorizingTrustManager() {
2018		return this.mMemorizingTrustManager;
2019	}
2020
2021	public PowerManager getPowerManager() {
2022		return this.pm;
2023	}
2024
2025	public LruCache<String, Bitmap> getBitmapCache() {
2026		return this.mBitmapCache;
2027	}
2028
2029	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
2030		if (account.getStatus() == Account.State.ONLINE) {
2031			MessagePacket error = this.mMessageGenerator
2032				.generateNotAcceptable(packet);
2033			sendMessagePacket(account, error);
2034		}
2035	}
2036
2037	public void syncRosterToDisk(final Account account) {
2038		new Thread(new Runnable() {
2039
2040			@Override
2041			public void run() {
2042				databaseBackend.writeRoster(account.getRoster());
2043			}
2044		}).start();
2045
2046	}
2047
2048	public List<String> getKnownHosts() {
2049		List<String> hosts = new ArrayList<>();
2050		for (Account account : getAccounts()) {
2051			if (!hosts.contains(account.getServer().toString())) {
2052				hosts.add(account.getServer().toString());
2053			}
2054			for (Contact contact : account.getRoster().getContacts()) {
2055				if (contact.showInRoster()) {
2056					final String server = contact.getServer().toString();
2057					if (server != null && !hosts.contains(server)) {
2058						hosts.add(server);
2059					}
2060				}
2061			}
2062		}
2063		return hosts;
2064	}
2065
2066	public List<String> getKnownConferenceHosts() {
2067		ArrayList<String> mucServers = new ArrayList<>();
2068		for (Account account : accounts) {
2069			if (account.getXmppConnection() != null) {
2070				String server = account.getXmppConnection().getMucServer();
2071				if (server != null && !mucServers.contains(server)) {
2072					mucServers.add(server);
2073				}
2074			}
2075		}
2076		return mucServers;
2077	}
2078
2079	public void sendMessagePacket(Account account, MessagePacket packet) {
2080		XmppConnection connection = account.getXmppConnection();
2081		if (connection != null) {
2082			connection.sendMessagePacket(packet);
2083		}
2084	}
2085
2086	public void sendPresencePacket(Account account, PresencePacket packet) {
2087		XmppConnection connection = account.getXmppConnection();
2088		if (connection != null) {
2089			connection.sendPresencePacket(packet);
2090		}
2091	}
2092
2093	public void sendIqPacket(Account account, IqPacket packet,
2094			OnIqPacketReceived callback) {
2095		XmppConnection connection = account.getXmppConnection();
2096		if (connection != null) {
2097			connection.sendIqPacket(packet, callback);
2098		}
2099	}
2100
2101	public MessageGenerator getMessageGenerator() {
2102		return this.mMessageGenerator;
2103	}
2104
2105	public PresenceGenerator getPresenceGenerator() {
2106		return this.mPresenceGenerator;
2107	}
2108
2109	public IqGenerator getIqGenerator() {
2110		return this.mIqGenerator;
2111	}
2112
2113	public JingleConnectionManager getJingleConnectionManager() {
2114		return this.mJingleConnectionManager;
2115	}
2116
2117	public List<Contact> findContacts(Jid jid) {
2118		ArrayList<Contact> contacts = new ArrayList<>();
2119		for (Account account : getAccounts()) {
2120			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2121				Contact contact = account.getRoster().getContactFromRoster(jid);
2122				if (contact != null) {
2123					contacts.add(contact);
2124				}
2125			}
2126		}
2127		return contacts;
2128	}
2129
2130	public NotificationService getNotificationService() {
2131		return this.mNotificationService;
2132	}
2133
2134	public HttpConnectionManager getHttpConnectionManager() {
2135		return this.mHttpConnectionManager;
2136	}
2137
2138	public void resendFailedMessages(Message message) {
2139		List<Message> messages = new ArrayList<>();
2140		Message current = message;
2141		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2142			messages.add(current);
2143			if (current.mergeable(current.next())) {
2144				current = current.next();
2145			} else {
2146				break;
2147			}
2148		}
2149		for (Message msg : messages) {
2150			markMessage(msg, Message.STATUS_WAITING);
2151			this.resendMessage(msg);
2152		}
2153	}
2154
2155	public interface OnConversationUpdate {
2156		public void onConversationUpdate();
2157	}
2158
2159	public interface OnAccountUpdate {
2160		public void onAccountUpdate();
2161	}
2162
2163	public interface OnRosterUpdate {
2164		public void onRosterUpdate();
2165	}
2166
2167	public interface OnMucRosterUpdate {
2168		public void onMucRosterUpdate();
2169	}
2170
2171	private interface OnConferenceOptionsPushed {
2172		public void onPushSucceeded();
2173		public void onPushFailed();
2174	}
2175
2176	public class XmppConnectionBinder extends Binder {
2177		public XmppConnectionService getService() {
2178			return XmppConnectionService.this;
2179		}
2180	}
2181}