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.jid.InvalidJidException;
  89import eu.siacs.conversations.xmpp.jid.Jid;
  90import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  91import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  92import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  93import eu.siacs.conversations.xmpp.pep.Avatar;
  94import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  95import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  96import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  97
  98public class XmppConnectionService extends Service {
  99
 100	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 101	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 102	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 103	private ContentObserver contactObserver = new ContentObserver(null) {
 104		@Override
 105		public void onChange(boolean selfChange) {
 106			super.onChange(selfChange);
 107			Intent intent = new Intent(getApplicationContext(),
 108					XmppConnectionService.class);
 109			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 110			startService(intent);
 111		}
 112	};
 113	private final IBinder mBinder = new XmppConnectionBinder();
 114	public DatabaseBackend databaseBackend;
 115	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 116
 117		@Override
 118		public void onContactStatusChanged(Contact contact, boolean online) {
 119			Conversation conversation = find(getConversations(), contact);
 120			if (conversation != null) {
 121				if (online && contact.getPresences().size() > 1) {
 122					conversation.endOtrIfNeeded();
 123				} else {
 124					conversation.resetOtrSession();
 125				}
 126				if (online && (contact.getPresences().size() == 1)) {
 127					sendUnsendMessages(conversation);
 128				}
 129			}
 130		}
 131	};
 132	private FileBackend fileBackend = new FileBackend(this);
 133	private MemorizingTrustManager mMemorizingTrustManager;
 134	private NotificationService mNotificationService = new NotificationService(
 135			this);
 136	private MessageParser mMessageParser = new MessageParser(this);
 137	private PresenceParser mPresenceParser = new PresenceParser(this);
 138	private IqParser mIqParser = new IqParser(this);
 139	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 140	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 141	private List<Account> accounts;
 142	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 143	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 144			this);
 145	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 146			this);
 147	private AvatarService mAvatarService = new AvatarService(this);
 148	private OnConversationUpdate mOnConversationUpdate = null;
 149	private Integer convChangedListenerCount = 0;
 150	private OnAccountUpdate mOnAccountUpdate = null;
 151	private OnStatusChanged statusListener = new OnStatusChanged() {
 152
 153		@Override
 154		public void onStatusChanged(Account account) {
 155			XmppConnection connection = account.getXmppConnection();
 156			if (mOnAccountUpdate != null) {
 157				mOnAccountUpdate.onAccountUpdate();
 158			}
 159			if (account.getStatus() == Account.State.ONLINE) {
 160				for (Conversation conversation : account.pendingConferenceLeaves) {
 161					leaveMuc(conversation);
 162				}
 163				for (Conversation conversation : account.pendingConferenceJoins) {
 164					joinMuc(conversation);
 165				}
 166				mJingleConnectionManager.cancelInTransmission();
 167				List<Conversation> conversations = getConversations();
 168				for (Conversation conversation : conversations) {
 169					if (conversation.getAccount() == account) {
 170						conversation.startOtrIfNeeded();
 171						sendUnsendMessages(conversation);
 172					}
 173				}
 174				if (connection != null && connection.getFeatures().csi()) {
 175					if (checkListeners()) {
 176						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 177								+ " sending csi//inactive");
 178						connection.sendInactive();
 179					} else {
 180						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 181								+ " sending csi//active");
 182						connection.sendActive();
 183					}
 184				}
 185				syncDirtyContacts(account);
 186				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 187			} else if (account.getStatus() == Account.State.OFFLINE) {
 188				resetSendingToWaiting(account);
 189				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 190					int timeToReconnect = mRandom.nextInt(50) + 10;
 191					scheduleWakeupCall(timeToReconnect, false);
 192				}
 193			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 194				databaseBackend.updateAccount(account);
 195				reconnectAccount(account, true);
 196			} else if ((account.getStatus() != Account.State.CONNECTING)
 197					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 198				if (connection != null) {
 199					int next = connection.getTimeToNextAttempt();
 200					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 201							+ ": error connecting account. try again in "
 202							+ next + "s for the "
 203							+ (connection.getAttempt() + 1) + " time");
 204					scheduleWakeupCall((int) (next * 1.2), false);
 205				}
 206					}
 207			getNotificationService().updateErrorNotification();
 208		}
 209	};
 210	private Integer accountChangedListenerCount = 0;
 211	private OnRosterUpdate mOnRosterUpdate = null;
 212	private Integer rosterChangedListenerCount = 0;
 213	private SecureRandom mRandom;
 214	private FileObserver fileObserver = new FileObserver(
 215			FileBackend.getConversationsImageDirectory()) {
 216
 217		@Override
 218		public void onEvent(int event, String path) {
 219			if (event == FileObserver.DELETE) {
 220				markFileDeleted(path.split("\\.")[0]);
 221			}
 222		}
 223	};
 224	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 225
 226		@Override
 227		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 228			mJingleConnectionManager.deliverPacket(account, packet);
 229		}
 230	};
 231
 232	private OpenPgpServiceConnection pgpServiceConnection;
 233	private PgpEngine mPgpEngine = null;
 234	private Intent pingIntent;
 235	private PendingIntent pendingPingIntent = null;
 236	private WakeLock wakeLock;
 237	private PowerManager pm;
 238	private OnBindListener mOnBindListener = new OnBindListener() {
 239
 240		@Override
 241		public void onBind(final Account account) {
 242			account.getRoster().clearPresences();
 243			account.clearPresences(); // self presences
 244			account.pendingConferenceJoins.clear();
 245			account.pendingConferenceLeaves.clear();
 246			fetchRosterFromServer(account);
 247			fetchBookmarks(account);
 248			sendPresencePacket(account,
 249					mPresenceGenerator.sendPresence(account));
 250			connectMultiModeConversations(account);
 251			updateConversationUi();
 252		}
 253	};
 254
 255	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 256
 257		@Override
 258		public void onMessageAcknowledged(Account account, String uuid) {
 259			for (Conversation conversation : getConversations()) {
 260				if (conversation.getAccount() == account) {
 261					for (Message message : conversation.getMessages()) {
 262						if ((message.getStatus() == Message.STATUS_UNSEND || message
 263									.getStatus() == Message.STATUS_WAITING)
 264								&& message.getUuid().equals(uuid)) {
 265							markMessage(message, Message.STATUS_SEND);
 266							return;
 267								}
 268					}
 269				}
 270			}
 271		}
 272	};
 273	private LruCache<String, Bitmap> mBitmapCache;
 274	private IqGenerator mIqGenerator = new IqGenerator(this);
 275
 276	public PgpEngine getPgpEngine() {
 277		if (pgpServiceConnection.isBound()) {
 278			if (this.mPgpEngine == null) {
 279				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 280							getApplicationContext(),
 281							pgpServiceConnection.getService()), this);
 282			}
 283			return mPgpEngine;
 284		} else {
 285			return null;
 286		}
 287
 288	}
 289
 290	public FileBackend getFileBackend() {
 291		return this.fileBackend;
 292	}
 293
 294	public AvatarService getAvatarService() {
 295		return this.mAvatarService;
 296	}
 297
 298	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 299		final Message message;
 300		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 301			message = new Message(conversation, "",
 302					Message.ENCRYPTION_DECRYPTED);
 303		} else {
 304			message = new Message(conversation, "",
 305					conversation.getNextEncryption(forceEncryption()));
 306		}
 307		message.setCounterpart(conversation.getNextCounterpart());
 308		message.setType(Message.TYPE_FILE);
 309		message.setStatus(Message.STATUS_OFFERED);
 310		String path = getFileBackend().getOriginalPath(uri);
 311		if (path!=null) {
 312			message.setRelativeFilePath(path);
 313			getFileBackend().updateFileParams(message);
 314			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 315				getPgpEngine().encrypt(message, callback);
 316			} else {
 317				callback.success(message);
 318			}
 319		} else {
 320			new Thread(new Runnable() {
 321				@Override
 322				public void run() {
 323					try {
 324						getFileBackend().copyFileToPrivateStorage(message, uri);
 325						getFileBackend().updateFileParams(message);
 326						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 327							getPgpEngine().encrypt(message, callback);
 328						} else {
 329							callback.success(message);
 330						}
 331					} catch (FileBackend.FileCopyException e) {
 332						callback.error(e.getResId(),message);
 333					}
 334				}
 335			}).start();
 336
 337		}
 338	}
 339
 340	public void attachImageToConversation(final Conversation conversation,
 341			final Uri uri, final UiCallback<Message> callback) {
 342		final Message message;
 343		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 344			message = new Message(conversation, "",
 345					Message.ENCRYPTION_DECRYPTED);
 346		} else {
 347			message = new Message(conversation, "",
 348					conversation.getNextEncryption(forceEncryption()));
 349		}
 350		message.setCounterpart(conversation.getNextCounterpart());
 351		message.setType(Message.TYPE_IMAGE);
 352		message.setStatus(Message.STATUS_OFFERED);
 353		new Thread(new Runnable() {
 354
 355			@Override
 356			public void run() {
 357				try {
 358					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 359					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 360						getPgpEngine().encrypt(message, callback);
 361					} else {
 362						callback.success(message);
 363					}
 364				} catch (FileBackend.FileCopyException e) {
 365					callback.error(e.getResId(), message);
 366				}
 367			}
 368		}).start();
 369	}
 370
 371	public Conversation find(Bookmark bookmark) {
 372		return find(bookmark.getAccount(), bookmark.getJid());
 373	}
 374
 375	public Conversation find(final Account account, final Jid jid) {
 376		return find(getConversations(), account, jid);
 377	}
 378
 379	@Override
 380	public int onStartCommand(Intent intent, int flags, int startId) {
 381		if (intent != null && intent.getAction() != null) {
 382			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 383				mergePhoneContactsWithRoster();
 384				return START_STICKY;
 385			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 386				logoutAndSave();
 387				return START_NOT_STICKY;
 388			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 389				mNotificationService.clear();
 390			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 391				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 392				toggleForegroundService();
 393			}
 394		}
 395		this.wakeLock.acquire();
 396
 397		for (Account account : accounts) {
 398			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 399				if (!hasInternetConnection()) {
 400					account.setStatus(Account.State.NO_INTERNET);
 401					if (statusListener != null) {
 402						statusListener.onStatusChanged(account);
 403					}
 404				} else {
 405					if (account.getStatus() == Account.State.NO_INTERNET) {
 406						account.setStatus(Account.State.OFFLINE);
 407						if (statusListener != null) {
 408							statusListener.onStatusChanged(account);
 409						}
 410					}
 411					if (account.getStatus() == Account.State.ONLINE) {
 412						long lastReceived = account.getXmppConnection()
 413							.getLastPacketReceived();
 414						long lastSent = account.getXmppConnection()
 415							.getLastPingSent();
 416						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 417							Log.d(Config.LOGTAG, account.getJid()
 418									+ ": ping timeout");
 419							this.reconnectAccount(account, true);
 420						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 421							account.getXmppConnection().sendPing();
 422							this.scheduleWakeupCall(2, false);
 423						}
 424					} else if (account.getStatus() == Account.State.OFFLINE) {
 425						if (account.getXmppConnection() == null) {
 426							account.setXmppConnection(this
 427									.createConnection(account));
 428						}
 429						new Thread(account.getXmppConnection()).start();
 430					} else if ((account.getStatus() == Account.State.CONNECTING)
 431							&& ((SystemClock.elapsedRealtime() - account
 432									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 433						Log.d(Config.LOGTAG, account.getJid()
 434								+ ": time out during connect reconnecting");
 435						reconnectAccount(account, true);
 436					} else {
 437						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 438							reconnectAccount(account, true);
 439						}
 440					}
 441					// in any case. reschedule wakup call
 442					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 443				}
 444				if (mOnAccountUpdate != null) {
 445					mOnAccountUpdate.onAccountUpdate();
 446				}
 447			}
 448		}
 449		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 450			if (!pm.isScreenOn()) {
 451			removeStaleListeners();
 452			}*/
 453		if (wakeLock.isHeld()) {
 454			try {
 455				wakeLock.release();
 456			} catch (final RuntimeException ignored) {
 457			}
 458		}
 459		return START_STICKY;
 460	}
 461
 462	public boolean hasInternetConnection() {
 463		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 464			.getSystemService(Context.CONNECTIVITY_SERVICE);
 465		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 466		return activeNetwork != null && activeNetwork.isConnected();
 467	}
 468
 469	@SuppressLint("TrulyRandom")
 470	@Override
 471	public void onCreate() {
 472		ExceptionHelper.init(getApplicationContext());
 473		PRNGFixes.apply();
 474		this.mRandom = new SecureRandom();
 475		this.mMemorizingTrustManager = new MemorizingTrustManager(
 476				getApplicationContext());
 477
 478		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 479		int cacheSize = maxMemory / 8;
 480		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 481			@Override
 482			protected int sizeOf(String key, Bitmap bitmap) {
 483				return bitmap.getByteCount() / 1024;
 484			}
 485		};
 486
 487		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 488		this.accounts = databaseBackend.getAccounts();
 489
 490		for (Account account : this.accounts) {
 491			account.initOtrEngine(this);
 492			this.databaseBackend.readRoster(account.getRoster());
 493		}
 494		initConversations();
 495		this.mergePhoneContactsWithRoster();
 496
 497		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 498		this.fileObserver.startWatching();
 499		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 500		this.pgpServiceConnection.bindToService();
 501
 502		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 503		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 504		toggleForegroundService();
 505	}
 506
 507	public void toggleForegroundService() {
 508		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 509			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 510		} else {
 511			stopForeground(true);
 512		}
 513	}
 514
 515	@Override
 516	public void onTaskRemoved(Intent rootIntent) {
 517		super.onTaskRemoved(rootIntent);
 518		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 519			this.logoutAndSave();
 520		}
 521	}
 522
 523	private void logoutAndSave() {
 524		for (Account account : accounts) {
 525			databaseBackend.writeRoster(account.getRoster());
 526			if (account.getXmppConnection() != null) {
 527				disconnect(account, false);
 528			}
 529		}
 530		Context context = getApplicationContext();
 531		AlarmManager alarmManager = (AlarmManager) context
 532			.getSystemService(Context.ALARM_SERVICE);
 533		Intent intent = new Intent(context, EventReceiver.class);
 534		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 535		Log.d(Config.LOGTAG, "good bye");
 536		stopSelf();
 537	}
 538
 539	protected void scheduleWakeupCall(int seconds, boolean ping) {
 540		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 541		Context context = getApplicationContext();
 542		AlarmManager alarmManager = (AlarmManager) context
 543			.getSystemService(Context.ALARM_SERVICE);
 544
 545		if (ping) {
 546			if (this.pingIntent == null) {
 547				this.pingIntent = new Intent(context, EventReceiver.class);
 548				this.pingIntent.setAction("ping");
 549				this.pingIntent.putExtra("time", timeToWake);
 550				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 551						this.pingIntent, 0);
 552				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 553						timeToWake, pendingPingIntent);
 554			} else {
 555				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 556				if (scheduledTime < SystemClock.elapsedRealtime()
 557						|| (scheduledTime > timeToWake)) {
 558					this.pingIntent.putExtra("time", timeToWake);
 559					alarmManager.cancel(this.pendingPingIntent);
 560					this.pendingPingIntent = PendingIntent.getBroadcast(
 561							context, 0, this.pingIntent, 0);
 562					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 563							timeToWake, pendingPingIntent);
 564						}
 565			}
 566		} else {
 567			Intent intent = new Intent(context, EventReceiver.class);
 568			intent.setAction("ping_check");
 569			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 570					intent, 0);
 571			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 572					alarmIntent);
 573		}
 574
 575	}
 576
 577	public XmppConnection createConnection(Account account) {
 578		SharedPreferences sharedPref = getPreferences();
 579		account.setResource(sharedPref.getString("resource", "mobile")
 580				.toLowerCase(Locale.getDefault()));
 581		XmppConnection connection = new XmppConnection(account, this);
 582		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 583		connection.setOnStatusChangedListener(this.statusListener);
 584		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 585		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 586		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 587		connection.setOnBindListener(this.mOnBindListener);
 588		connection
 589			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 590		return connection;
 591	}
 592
 593	public void sendMessage(Message message) {
 594		Account account = message.getConversation().getAccount();
 595		account.deactivateGracePeriod();
 596		Conversation conv = message.getConversation();
 597		MessagePacket packet = null;
 598		boolean saveInDb = true;
 599		boolean send = false;
 600		if (account.getStatus() == Account.State.ONLINE
 601				&& account.getXmppConnection() != null) {
 602			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 603				if (message.getCounterpart() != null) {
 604					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 605						if (!conv.hasValidOtrSession()) {
 606							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 607							message.setStatus(Message.STATUS_WAITING);
 608						} else if (conv.hasValidOtrSession()
 609								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 610							mJingleConnectionManager
 611								.createNewConnection(message);
 612								}
 613					} else {
 614						mJingleConnectionManager.createNewConnection(message);
 615					}
 616				} else {
 617					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 618						conv.startOtrIfNeeded();
 619					}
 620					message.setStatus(Message.STATUS_WAITING);
 621				}
 622			} else {
 623				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 624					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 625						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 626						message.setStatus(Message.STATUS_WAITING);
 627					} else if (conv.hasValidOtrSession()) {
 628						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 629							packet = mMessageGenerator.generateOtrChat(message);
 630							send = true;
 631						} else {
 632							message.setStatus(Message.STATUS_WAITING);
 633							conv.startOtrIfNeeded();
 634						}
 635					} else {
 636						message.setStatus(Message.STATUS_WAITING);
 637					}
 638				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 639					message.getConversation().endOtrIfNeeded();
 640					failWaitingOtrMessages(message.getConversation());
 641					packet = mMessageGenerator.generatePgpChat(message);
 642					send = true;
 643				} else {
 644					message.getConversation().endOtrIfNeeded();
 645					failWaitingOtrMessages(message.getConversation());
 646					packet = mMessageGenerator.generateChat(message);
 647					send = true;
 648				}
 649			}
 650			if (!account.getXmppConnection().getFeatures().sm()
 651					&& conv.getMode() != Conversation.MODE_MULTI) {
 652				message.setStatus(Message.STATUS_SEND);
 653					}
 654		} else {
 655			message.setStatus(Message.STATUS_WAITING);
 656			if (message.getType() == Message.TYPE_TEXT) {
 657				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 658					String pgpBody = message.getEncryptedBody();
 659					String decryptedBody = message.getBody();
 660					message.setBody(pgpBody);
 661					message.setEncryption(Message.ENCRYPTION_PGP);
 662					databaseBackend.createMessage(message);
 663					saveInDb = false;
 664					message.setBody(decryptedBody);
 665					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 666				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 667					if (!conv.hasValidOtrSession()
 668							&& message.getCounterpart() != null) {
 669						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 670							}
 671				}
 672			}
 673
 674		}
 675		conv.add(message);
 676		if (saveInDb) {
 677			if (message.getEncryption() == Message.ENCRYPTION_NONE
 678					|| saveEncryptedMessages()) {
 679				databaseBackend.createMessage(message);
 680					}
 681		}
 682		if ((send) && (packet != null)) {
 683			sendMessagePacket(account, packet);
 684		}
 685		updateConversationUi();
 686	}
 687
 688	private void sendUnsendMessages(Conversation conversation) {
 689		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 690			int status = conversation.getMessages().get(i).getStatus();
 691			if (status == Message.STATUS_WAITING) {
 692				resendMessage(conversation.getMessages().get(i));
 693			}
 694		}
 695	}
 696
 697	private void resendMessage(Message message) {
 698		Account account = message.getConversation().getAccount();
 699		MessagePacket packet = null;
 700		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 701			Presences presences = message.getConversation().getContact()
 702				.getPresences();
 703			if (!message.getConversation().hasValidOtrSession()) {
 704				if ((message.getCounterpart() != null)
 705						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 706					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 707				} else {
 708					if (presences.size() == 1) {
 709						String presence = presences.asStringArray()[0];
 710						message.getConversation().startOtrSession(presence, true);
 711					}
 712				}
 713			} else {
 714				if (message.getConversation().getOtrSession()
 715						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 716					try {
 717						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 718						if (message.getType() == Message.TYPE_TEXT) {
 719							packet = mMessageGenerator.generateOtrChat(message,
 720									true);
 721						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 722							mJingleConnectionManager.createNewConnection(message);
 723						}
 724					} catch (InvalidJidException e) {
 725
 726					}
 727						}
 728			}
 729		} else if (message.getType() == Message.TYPE_TEXT) {
 730			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 731				packet = mMessageGenerator.generateChat(message, true);
 732			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 733					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 734				packet = mMessageGenerator.generatePgpChat(message, true);
 735					}
 736		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 737			Contact contact = message.getConversation().getContact();
 738			Presences presences = contact.getPresences();
 739			if ((message.getCounterpart() != null)
 740					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 741				markMessage(message, Message.STATUS_OFFERED);
 742				mJingleConnectionManager.createNewConnection(message);
 743			} else {
 744				if (presences.size() == 1) {
 745					String presence = presences.asStringArray()[0];
 746					try {
 747						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 748					} catch (InvalidJidException e) {
 749						return;
 750					}
 751					markMessage(message, Message.STATUS_OFFERED);
 752					mJingleConnectionManager.createNewConnection(message);
 753				}
 754			}
 755		}
 756		if (packet != null) {
 757			if (!account.getXmppConnection().getFeatures().sm()
 758					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 759				markMessage(message, Message.STATUS_SEND);
 760			} else {
 761				markMessage(message, Message.STATUS_UNSEND);
 762			}
 763			sendMessagePacket(account, packet);
 764		}
 765	}
 766
 767	public void fetchRosterFromServer(Account account) {
 768		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 769		if (!"".equals(account.getRosterVersion())) {
 770			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 771					+ ": fetching roster version " + account.getRosterVersion());
 772		} else {
 773			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 774		}
 775		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 776				account.getRosterVersion());
 777		account.getXmppConnection().sendIqPacket(iqPacket,
 778				new OnIqPacketReceived() {
 779
 780					@Override
 781					public void onIqPacketReceived(final Account account,
 782							IqPacket packet) {
 783						Element query = packet.findChild("query");
 784						if (query != null) {
 785							account.getRoster().markAllAsNotInRoster();
 786							mIqParser.rosterItems(account, query);
 787						}
 788					}
 789				});
 790	}
 791
 792	public void fetchBookmarks(Account account) {
 793		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 794		Element query = iqPacket.query("jabber:iq:private");
 795		query.addChild("storage", "storage:bookmarks");
 796		OnIqPacketReceived callback = new OnIqPacketReceived() {
 797
 798			@Override
 799			public void onIqPacketReceived(Account account, IqPacket packet) {
 800				Element query = packet.query();
 801				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 802				Element storage = query.findChild("storage",
 803						"storage:bookmarks");
 804				if (storage != null) {
 805					for (Element item : storage.getChildren()) {
 806						if (item.getName().equals("conference")) {
 807							Bookmark bookmark = Bookmark.parse(item, account);
 808							bookmarks.add(bookmark);
 809							Conversation conversation = find(bookmark);
 810							if (conversation != null) {
 811								conversation.setBookmark(bookmark);
 812							} else {
 813								if (bookmark.autojoin()) {
 814									conversation = findOrCreateConversation(
 815											account, bookmark.getJid(), true);
 816									conversation.setBookmark(bookmark);
 817									joinMuc(conversation);
 818								}
 819							}
 820						}
 821					}
 822				}
 823				account.setBookmarks(bookmarks);
 824			}
 825		};
 826		sendIqPacket(account, iqPacket, callback);
 827
 828	}
 829
 830	public void pushBookmarks(Account account) {
 831		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 832		Element query = iqPacket.query("jabber:iq:private");
 833		Element storage = query.addChild("storage", "storage:bookmarks");
 834		for (Bookmark bookmark : account.getBookmarks()) {
 835			storage.addChild(bookmark);
 836		}
 837		sendIqPacket(account, iqPacket, null);
 838	}
 839
 840	private void mergePhoneContactsWithRoster() {
 841		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 842				new OnPhoneContactsLoadedListener() {
 843					@Override
 844					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 845						for (Account account : accounts) {
 846							account.getRoster().clearSystemAccounts();
 847						}
 848						for (Bundle phoneContact : phoneContacts) {
 849							for (Account account : accounts) {
 850								Jid jid;
 851								try {
 852									jid = Jid.fromString(phoneContact.getString("jid"));
 853								} catch (final InvalidJidException e) {
 854									// TODO: Warn if contact import fails here?
 855									break;
 856								}
 857								final Contact contact = account.getRoster()
 858									.getContact(jid);
 859								String systemAccount = phoneContact
 860									.getInt("phoneid")
 861									+ "#"
 862									+ phoneContact.getString("lookup");
 863								contact.setSystemAccount(systemAccount);
 864								contact.setPhotoUri(phoneContact
 865										.getString("photouri"));
 866								contact.setSystemName(phoneContact
 867										.getString("displayname"));
 868								getAvatarService().clear(contact);
 869							}
 870						}
 871					}
 872				});
 873	}
 874
 875	private void initConversations() {
 876		synchronized (this.conversations) {
 877			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 878			for (Account account : this.accounts) {
 879				accountLookupTable.put(account.getUuid(), account);
 880			}
 881			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 882			for (Conversation conv : this.conversations) {
 883				Account account = accountLookupTable.get(conv.getAccountUuid());
 884				conv.setAccount(account);
 885				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 886				checkDeletedFiles(conv);
 887			}
 888		}
 889	}
 890
 891	public List<Conversation> getConversations() {
 892		return this.conversations;
 893	}
 894
 895	private void checkDeletedFiles(Conversation conversation) {
 896		for (Message message : conversation.getMessages()) {
 897			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 898					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 899				if (!getFileBackend().isFileAvailable(message)) {
 900					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 901				}
 902					}
 903		}
 904	}
 905
 906	private void markFileDeleted(String uuid) {
 907		for (Conversation conversation : getConversations()) {
 908			for (Message message : conversation.getMessages()) {
 909				if (message.getType() == Message.TYPE_IMAGE
 910						&& message.getEncryption() != Message.ENCRYPTION_PGP
 911						&& message.getUuid().equals(uuid)) {
 912					if (!getFileBackend().isFileAvailable(message)) {
 913						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 914						updateConversationUi();
 915					}
 916					return;
 917						}
 918			}
 919		}
 920	}
 921
 922	public void populateWithOrderedConversations(final List<Conversation> list) {
 923		populateWithOrderedConversations(list, true);
 924	}
 925
 926	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 927		list.clear();
 928		if (includeConferences) {
 929			list.addAll(getConversations());
 930		} else {
 931			for (Conversation conversation : getConversations()) {
 932				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 933					list.add(conversation);
 934				}
 935			}
 936		}
 937		Collections.sort(list, new Comparator<Conversation>() {
 938			@Override
 939			public int compare(Conversation lhs, Conversation rhs) {
 940				Message left = lhs.getLatestMessage();
 941				Message right = rhs.getLatestMessage();
 942				if (left.getTimeSent() > right.getTimeSent()) {
 943					return -1;
 944				} else if (left.getTimeSent() < right.getTimeSent()) {
 945					return 1;
 946				} else {
 947					return 0;
 948				}
 949			}
 950		});
 951	}
 952
 953	public int loadMoreMessages(Conversation conversation, long timestamp) {
 954		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 955				timestamp);
 956		for (Message message : messages) {
 957			message.setConversation(conversation);
 958		}
 959		conversation.addAll(0, messages);
 960		return messages.size();
 961	}
 962
 963	public List<Account> getAccounts() {
 964		return this.accounts;
 965	}
 966
 967	public Conversation find(List<Conversation> haystack, Contact contact) {
 968		for (Conversation conversation : haystack) {
 969			if (conversation.getContact() == contact) {
 970				return conversation;
 971			}
 972		}
 973		return null;
 974	}
 975
 976	public Conversation find(final List<Conversation> haystack,
 977			final Account account,
 978			final Jid jid) {
 979		for (Conversation conversation : haystack) {
 980			if ((account == null || conversation.getAccount() == account)
 981					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 982				return conversation;
 983					}
 984		}
 985		return null;
 986	}
 987
 988	public Conversation findOrCreateConversation(final Account account, final Jid jid,
 989			final boolean muc) {
 990		synchronized (this.conversations) {
 991			Conversation conversation = find(account, jid);
 992			if (conversation != null) {
 993				return conversation;
 994			}
 995			conversation = databaseBackend.findConversation(account, jid);
 996			if (conversation != null) {
 997				conversation.setStatus(Conversation.STATUS_AVAILABLE);
 998				conversation.setAccount(account);
 999				if (muc) {
1000					conversation.setMode(Conversation.MODE_MULTI);
1001				} else {
1002					conversation.setMode(Conversation.MODE_SINGLE);
1003				}
1004				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1005				this.databaseBackend.updateConversation(conversation);
1006			} else {
1007				String conversationName;
1008				Contact contact = account.getRoster().getContact(jid);
1009				if (contact != null) {
1010					conversationName = contact.getDisplayName();
1011				} else {
1012					conversationName = jid.getLocalpart();
1013				}
1014				if (muc) {
1015					conversation = new Conversation(conversationName, account, jid,
1016							Conversation.MODE_MULTI);
1017				} else {
1018					conversation = new Conversation(conversationName, account, jid,
1019							Conversation.MODE_SINGLE);
1020				}
1021				this.databaseBackend.createConversation(conversation);
1022			}
1023			this.conversations.add(conversation);
1024			updateConversationUi();
1025			return conversation;
1026		}
1027	}
1028
1029	public void archiveConversation(Conversation conversation) {
1030		synchronized (this.conversations) {
1031			if (conversation.getMode() == Conversation.MODE_MULTI) {
1032				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1033					Bookmark bookmark = conversation.getBookmark();
1034					if (bookmark != null && bookmark.autojoin()) {
1035						bookmark.setAutojoin(false);
1036						pushBookmarks(bookmark.getAccount());
1037					}
1038				}
1039				leaveMuc(conversation);
1040			} else {
1041				conversation.endOtrIfNeeded();
1042			}
1043			this.databaseBackend.updateConversation(conversation);
1044			this.conversations.remove(conversation);
1045			updateConversationUi();
1046		}
1047	}
1048
1049	public void clearConversationHistory(Conversation conversation) {
1050		this.databaseBackend.deleteMessagesInConversation(conversation);
1051		conversation.getMessages().clear();
1052		updateConversationUi();
1053	}
1054
1055	public void createAccount(Account account) {
1056		account.initOtrEngine(this);
1057		databaseBackend.createAccount(account);
1058		this.accounts.add(account);
1059		this.reconnectAccount(account, false);
1060		updateAccountUi();
1061	}
1062
1063	public void updateAccount(Account account) {
1064		this.statusListener.onStatusChanged(account);
1065		databaseBackend.updateAccount(account);
1066		reconnectAccount(account, false);
1067		updateAccountUi();
1068		getNotificationService().updateErrorNotification();
1069	}
1070
1071	public void deleteAccount(Account account) {
1072		synchronized (this.conversations) {
1073			for (Conversation conversation : conversations) {
1074				if (conversation.getAccount() == account) {
1075					if (conversation.getMode() == Conversation.MODE_MULTI) {
1076						leaveMuc(conversation);
1077					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1078						conversation.endOtrIfNeeded();
1079					}
1080					conversations.remove(conversation);
1081				}
1082			}
1083			if (account.getXmppConnection() != null) {
1084				this.disconnect(account, true);
1085			}
1086			databaseBackend.deleteAccount(account);
1087			this.accounts.remove(account);
1088			updateAccountUi();
1089			getNotificationService().updateErrorNotification();
1090		}
1091	}
1092
1093	private void removeStaleListeners() {
1094		boolean removedListener = false;
1095		synchronized (this.convChangedListenerCount) {
1096			if (this.mOnConversationUpdate != null) {
1097				this.mOnConversationUpdate = null;
1098				this.convChangedListenerCount = 0;
1099				this.mNotificationService.setIsInForeground(false);
1100				removedListener = true;
1101			}
1102		}
1103		synchronized (this.accountChangedListenerCount) {
1104			if (this.mOnAccountUpdate != null) {
1105				this.mOnAccountUpdate = null;
1106				this.accountChangedListenerCount = 0;
1107				removedListener = true;
1108			}
1109		}
1110		synchronized (this.rosterChangedListenerCount) {
1111			if (this.mOnRosterUpdate != null) {
1112				this.mOnRosterUpdate = null;
1113				this.rosterChangedListenerCount = 0;
1114				removedListener = true;
1115			}
1116		}
1117		if (removedListener) {
1118			final String msg = "removed stale listeners";
1119			Log.d(Config.LOGTAG, msg);
1120			checkListeners();
1121			try {
1122				OutputStream os = openFileOutput("stacktrace.txt", MODE_PRIVATE);
1123				os.write(msg.getBytes());
1124				os.flush();
1125				os.close();
1126			} catch (final FileNotFoundException ignored) {
1127
1128			} catch (final IOException ignored) {
1129			}
1130		}
1131	}
1132
1133	public void setOnConversationListChangedListener(
1134			OnConversationUpdate listener) {
1135		/*if (!isScreenOn()) {
1136			Log.d(Config.LOGTAG,
1137			"ignoring setOnConversationListChangedListener");
1138			return;
1139			}*/
1140		synchronized (this.convChangedListenerCount) {
1141			if (checkListeners()) {
1142				switchToForeground();
1143			}
1144			this.mOnConversationUpdate = listener;
1145			this.mNotificationService.setIsInForeground(true);
1146			this.convChangedListenerCount++;
1147		}
1148			}
1149
1150	public void removeOnConversationListChangedListener() {
1151		synchronized (this.convChangedListenerCount) {
1152			this.convChangedListenerCount--;
1153			if (this.convChangedListenerCount <= 0) {
1154				this.convChangedListenerCount = 0;
1155				this.mOnConversationUpdate = null;
1156				this.mNotificationService.setIsInForeground(false);
1157				if (checkListeners()) {
1158					switchToBackground();
1159				}
1160			}
1161		}
1162	}
1163
1164	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1165		/*if (!isScreenOn()) {
1166			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1167			return;
1168			}*/
1169		synchronized (this.accountChangedListenerCount) {
1170			if (checkListeners()) {
1171				switchToForeground();
1172			}
1173			this.mOnAccountUpdate = listener;
1174			this.accountChangedListenerCount++;
1175		}
1176	}
1177
1178	public void removeOnAccountListChangedListener() {
1179		synchronized (this.accountChangedListenerCount) {
1180			this.accountChangedListenerCount--;
1181			if (this.accountChangedListenerCount <= 0) {
1182				this.mOnAccountUpdate = null;
1183				this.accountChangedListenerCount = 0;
1184				if (checkListeners()) {
1185					switchToBackground();
1186				}
1187			}
1188		}
1189	}
1190
1191	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1192		/*if (!isScreenOn()) {
1193			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1194			return;
1195			}*/
1196		synchronized (this.rosterChangedListenerCount) {
1197			if (checkListeners()) {
1198				switchToForeground();
1199			}
1200			this.mOnRosterUpdate = listener;
1201			this.rosterChangedListenerCount++;
1202		}
1203	}
1204
1205	public void removeOnRosterUpdateListener() {
1206		synchronized (this.rosterChangedListenerCount) {
1207			this.rosterChangedListenerCount--;
1208			if (this.rosterChangedListenerCount <= 0) {
1209				this.rosterChangedListenerCount = 0;
1210				this.mOnRosterUpdate = null;
1211				if (checkListeners()) {
1212					switchToBackground();
1213				}
1214			}
1215		}
1216	}
1217
1218	private boolean checkListeners() {
1219		return (this.mOnAccountUpdate == null
1220				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1221	}
1222
1223	private void switchToForeground() {
1224		for (Account account : getAccounts()) {
1225			if (account.getStatus() == Account.State.ONLINE) {
1226				XmppConnection connection = account.getXmppConnection();
1227				if (connection != null && connection.getFeatures().csi()) {
1228					connection.sendActive();
1229				}
1230			}
1231		}
1232		Log.d(Config.LOGTAG, "app switched into foreground");
1233	}
1234
1235	private void switchToBackground() {
1236		for (Account account : getAccounts()) {
1237			if (account.getStatus() == Account.State.ONLINE) {
1238				XmppConnection connection = account.getXmppConnection();
1239				if (connection != null && connection.getFeatures().csi()) {
1240					connection.sendInactive();
1241				}
1242			}
1243		}
1244		this.mNotificationService.setIsInForeground(false);
1245		Log.d(Config.LOGTAG, "app switched into background");
1246	}
1247
1248	private boolean isScreenOn() {
1249		PowerManager pm = (PowerManager) this
1250			.getSystemService(Context.POWER_SERVICE);
1251		return pm.isScreenOn();
1252	}
1253
1254	public void connectMultiModeConversations(Account account) {
1255		List<Conversation> conversations = getConversations();
1256		for (Conversation conversation : conversations) {
1257			if ((conversation.getMode() == Conversation.MODE_MULTI)
1258					&& (conversation.getAccount() == account)) {
1259				joinMuc(conversation);
1260					}
1261		}
1262	}
1263
1264	public void joinMuc(Conversation conversation) {
1265		Account account = conversation.getAccount();
1266		account.pendingConferenceJoins.remove(conversation);
1267		account.pendingConferenceLeaves.remove(conversation);
1268		if (account.getStatus() == Account.State.ONLINE) {
1269			Log.d(Config.LOGTAG,
1270					"joining conversation " + conversation.getContactJid());
1271			String nick = conversation.getMucOptions().getProposedNick();
1272			Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1273			PresencePacket packet = new PresencePacket();
1274			packet.setTo(joinJid);
1275			Element x = new Element("x");
1276			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1277			if (conversation.getMucOptions().getPassword() != null) {
1278				Element password = x.addChild("password");
1279				password.setContent(conversation.getMucOptions().getPassword());
1280			}
1281			String sig = account.getPgpSignature();
1282			if (sig != null) {
1283				packet.addChild("status").setContent("online");
1284				packet.addChild("x", "jabber:x:signed").setContent(sig);
1285			}
1286			if (conversation.getMessages().size() != 0) {
1287				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1288						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1289				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1290				Date date = new Date(conversation.getLatestMessage()
1291						.getTimeSent() + 1000);
1292				x.addChild("history").setAttribute("since",
1293						mDateFormat.format(date));
1294			}
1295			packet.addChild(x);
1296			sendPresencePacket(account, packet);
1297			if (!joinJid.equals(conversation.getContactJid())) {
1298				conversation.setContactJid(joinJid);
1299				databaseBackend.updateConversation(conversation);
1300			}
1301		} else {
1302			account.pendingConferenceJoins.add(conversation);
1303		}
1304	}
1305
1306	public void providePasswordForMuc(Conversation conversation, String password) {
1307		if (conversation.getMode() == Conversation.MODE_MULTI) {
1308			conversation.getMucOptions().setPassword(password);
1309			if (conversation.getBookmark() != null) {
1310				conversation.getBookmark().setAutojoin(true);
1311				pushBookmarks(conversation.getAccount());
1312			}
1313			databaseBackend.updateConversation(conversation);
1314			joinMuc(conversation);
1315		}
1316	}
1317
1318	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1319		final MucOptions options = conversation.getMucOptions();
1320		final Jid joinJid = options.createJoinJid(nick);
1321		if (options.online()) {
1322			Account account = conversation.getAccount();
1323			options.setOnRenameListener(new OnRenameListener() {
1324
1325				@Override
1326				public void onSuccess() {
1327					conversation.setContactJid(joinJid);
1328					databaseBackend.updateConversation(conversation);
1329					Bookmark bookmark = conversation.getBookmark();
1330					if (bookmark != null) {
1331						bookmark.setNick(nick);
1332						pushBookmarks(bookmark.getAccount());
1333					}
1334					callback.success(conversation);
1335				}
1336
1337				@Override
1338				public void onFailure() {
1339					callback.error(R.string.nick_in_use,conversation);
1340				}
1341			});
1342
1343			PresencePacket packet = new PresencePacket();
1344			packet.setTo(joinJid);
1345			packet.setFrom(conversation.getAccount().getJid());
1346
1347			String sig = account.getPgpSignature();
1348			if (sig != null) {
1349				packet.addChild("status").setContent("online");
1350				packet.addChild("x", "jabber:x:signed").setContent(sig);
1351			}
1352			sendPresencePacket(account, packet);
1353		} else {
1354			conversation.setContactJid(joinJid);
1355			databaseBackend.updateConversation(conversation);
1356			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1357				Bookmark bookmark = conversation.getBookmark();
1358				if (bookmark != null) {
1359					bookmark.setNick(nick);
1360					pushBookmarks(bookmark.getAccount());
1361				}
1362				joinMuc(conversation);
1363			}
1364		}
1365	}
1366
1367	public void leaveMuc(Conversation conversation) {
1368		Account account = conversation.getAccount();
1369		account.pendingConferenceJoins.remove(conversation);
1370		account.pendingConferenceLeaves.remove(conversation);
1371		if (account.getStatus() == Account.State.ONLINE) {
1372			PresencePacket packet = new PresencePacket();
1373			packet.setTo(conversation.getContactJid());
1374			packet.setFrom(conversation.getAccount().getJid());
1375			packet.setAttribute("type", "unavailable");
1376			sendPresencePacket(conversation.getAccount(), packet);
1377			conversation.getMucOptions().setOffline();
1378			conversation.deregisterWithBookmark();
1379			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1380					+ ": leaving muc " + conversation.getContactJid());
1381		} else {
1382			account.pendingConferenceLeaves.add(conversation);
1383		}
1384	}
1385
1386	private String findConferenceServer(final Account account) {
1387		String server;
1388		if (account.getXmppConnection() != null) {
1389			server = account.getXmppConnection().getMucServer();
1390			if (server != null) {
1391				return server;
1392			}
1393		}
1394		for(Account other : getAccounts()) {
1395			if (other != account && other.getXmppConnection() != null) {
1396				server = other.getXmppConnection().getMucServer();
1397				if (server != null) {
1398					return server;
1399				}
1400			}
1401		}
1402		return null;
1403	}
1404
1405	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1406		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1407		if (account.getStatus() == Account.State.ONLINE) {
1408			try {
1409				String server = findConferenceServer(account);
1410				if (server == null) {
1411					if (callback != null) {
1412						callback.error(R.string.no_conference_server_found,null);
1413					}
1414					return;
1415				}
1416				String name = new BigInteger(75,getRNG()).toString(32);
1417				Jid jid = Jid.fromParts(name,server,null);
1418				final Conversation conversation = findOrCreateConversation(account, jid, true);
1419				joinMuc(conversation);
1420				Bundle options = new Bundle();
1421				options.putString("muc#roomconfig_persistentroom", "1");
1422				options.putString("muc#roomconfig_membersonly", "1");
1423				options.putString("muc#roomconfig_publicroom", "0");
1424				options.putString("muc#roomconfig_whois", "anyone");
1425				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1426					@Override
1427					public void onPushSucceeded() {
1428						for(Jid invite : jids) {
1429							invite(conversation,invite);
1430						}
1431						if (callback != null) {
1432							callback.success(conversation);
1433						}
1434					}
1435
1436					@Override
1437					public void onPushFailed() {
1438						if (callback != null) {
1439							callback.error(R.string.conference_creation_failed, conversation);
1440						}
1441					}
1442				});
1443
1444			} catch (InvalidJidException e) {
1445				if (callback != null) {
1446					callback.error(R.string.conference_creation_failed, null);
1447				}
1448			}
1449		} else {
1450			if (callback != null) {
1451				callback.error(R.string.not_connected_try_again,null);
1452			}
1453		}
1454	}
1455
1456	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1457		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1458		request.setTo(conversation.getContactJid().toBareJid());
1459		request.query("http://jabber.org/protocol/muc#owner");
1460		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1461			@Override
1462			public void onIqPacketReceived(Account account, IqPacket packet) {
1463				if (packet.getType() != IqPacket.TYPE_ERROR) {
1464					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1465					for (Field field : data.getFields()) {
1466						if (options.containsKey(field.getName())) {
1467							field.setValue(options.getString(field.getName()));
1468						}
1469					}
1470					data.submit();
1471					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1472					set.setTo(conversation.getContactJid().toBareJid());
1473					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1474					sendIqPacket(account, set, new OnIqPacketReceived() {
1475						@Override
1476						public void onIqPacketReceived(Account account, IqPacket packet) {
1477							if (packet.getType() == IqPacket.TYPE_RESULT) {
1478								if (callback != null) {
1479									callback.onPushSucceeded();
1480								}
1481							} else {
1482								if (callback != null) {
1483									callback.onPushFailed();
1484								}
1485							}
1486						}
1487					});
1488				} else {
1489					if (callback != null) {
1490						callback.onPushFailed();
1491					}
1492				}
1493			}
1494		});
1495	}
1496
1497	public void disconnect(Account account, boolean force) {
1498		if ((account.getStatus() == Account.State.ONLINE)
1499				|| (account.getStatus() == Account.State.DISABLED)) {
1500			if (!force) {
1501				List<Conversation> conversations = getConversations();
1502				for (Conversation conversation : conversations) {
1503					if (conversation.getAccount() == account) {
1504						if (conversation.getMode() == Conversation.MODE_MULTI) {
1505							leaveMuc(conversation);
1506						} else {
1507							if (conversation.endOtrIfNeeded()) {
1508								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1509										+ ": ended otr session with "
1510										+ conversation.getContactJid());
1511							}
1512						}
1513					}
1514				}
1515			}
1516			account.getXmppConnection().disconnect(force);
1517				}
1518	}
1519
1520	@Override
1521	public IBinder onBind(Intent intent) {
1522		return mBinder;
1523	}
1524
1525	public void updateMessage(Message message) {
1526		databaseBackend.updateMessage(message);
1527		updateConversationUi();
1528	}
1529
1530	protected void syncDirtyContacts(Account account) {
1531		for (Contact contact : account.getRoster().getContacts()) {
1532			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1533				pushContactToServer(contact);
1534			}
1535			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1536				deleteContactOnServer(contact);
1537			}
1538		}
1539	}
1540
1541	public void createContact(Contact contact) {
1542		SharedPreferences sharedPref = getPreferences();
1543		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1544		if (autoGrant) {
1545			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1546			contact.setOption(Contact.Options.ASKING);
1547		}
1548		pushContactToServer(contact);
1549	}
1550
1551	public void onOtrSessionEstablished(Conversation conversation) {
1552		Account account = conversation.getAccount();
1553		List<Message> messages = conversation.getMessages();
1554		Session otrSession = conversation.getOtrSession();
1555		Log.d(Config.LOGTAG,
1556				account.getJid().toBareJid() + " otr session established with "
1557				+ conversation.getContactJid() + "/"
1558				+ otrSession.getSessionID().getUserID());
1559		for (Message msg : messages) {
1560			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1561					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1562				SessionID id = otrSession.getSessionID();
1563				try {
1564					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1565				} catch (InvalidJidException e) {
1566					break;
1567				}
1568				if (msg.getType() == Message.TYPE_TEXT) {
1569					MessagePacket outPacket = mMessageGenerator
1570						.generateOtrChat(msg, true);
1571					if (outPacket != null) {
1572						msg.setStatus(Message.STATUS_SEND);
1573						databaseBackend.updateMessage(msg);
1574						sendMessagePacket(account, outPacket);
1575					}
1576				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1577					mJingleConnectionManager.createNewConnection(msg);
1578				}
1579					}
1580		}
1581		updateConversationUi();
1582	}
1583
1584	public boolean renewSymmetricKey(Conversation conversation) {
1585		Account account = conversation.getAccount();
1586		byte[] symmetricKey = new byte[32];
1587		this.mRandom.nextBytes(symmetricKey);
1588		Session otrSession = conversation.getOtrSession();
1589		if (otrSession != null) {
1590			MessagePacket packet = new MessagePacket();
1591			packet.setType(MessagePacket.TYPE_CHAT);
1592			packet.setFrom(account.getJid());
1593			packet.addChild("private", "urn:xmpp:carbons:2");
1594			packet.addChild("no-copy", "urn:xmpp:hints");
1595			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1596					+ otrSession.getSessionID().getUserID());
1597			try {
1598				packet.setBody(otrSession
1599						.transformSending(CryptoHelper.FILETRANSFER
1600							+ CryptoHelper.bytesToHex(symmetricKey)));
1601				sendMessagePacket(account, packet);
1602				conversation.setSymmetricKey(symmetricKey);
1603				return true;
1604			} catch (OtrException e) {
1605				return false;
1606			}
1607		}
1608		return false;
1609	}
1610
1611	public void pushContactToServer(Contact contact) {
1612		contact.resetOption(Contact.Options.DIRTY_DELETE);
1613		contact.setOption(Contact.Options.DIRTY_PUSH);
1614		Account account = contact.getAccount();
1615		if (account.getStatus() == Account.State.ONLINE) {
1616			boolean ask = contact.getOption(Contact.Options.ASKING);
1617			boolean sendUpdates = contact
1618				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1619				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1620			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1621			iq.query("jabber:iq:roster").addChild(contact.asElement());
1622			account.getXmppConnection().sendIqPacket(iq, null);
1623			if (sendUpdates) {
1624				sendPresencePacket(account,
1625						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1626			}
1627			if (ask) {
1628				sendPresencePacket(account,
1629						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1630			}
1631		}
1632	}
1633
1634	public void publishAvatar(Account account, Uri image,
1635			final UiCallback<Avatar> callback) {
1636		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1637		final int size = Config.AVATAR_SIZE;
1638		final Avatar avatar = getFileBackend()
1639			.getPepAvatar(image, size, format);
1640		if (avatar != null) {
1641			avatar.height = size;
1642			avatar.width = size;
1643			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1644				avatar.type = "image/webp";
1645			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1646				avatar.type = "image/jpeg";
1647			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1648				avatar.type = "image/png";
1649			}
1650			if (!getFileBackend().save(avatar)) {
1651				callback.error(R.string.error_saving_avatar, avatar);
1652				return;
1653			}
1654			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1655			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1656
1657				@Override
1658				public void onIqPacketReceived(Account account, IqPacket result) {
1659					if (result.getType() == IqPacket.TYPE_RESULT) {
1660						IqPacket packet = XmppConnectionService.this.mIqGenerator
1661							.publishAvatarMetadata(avatar);
1662						sendIqPacket(account, packet, new OnIqPacketReceived() {
1663
1664							@Override
1665							public void onIqPacketReceived(Account account,
1666									IqPacket result) {
1667								if (result.getType() == IqPacket.TYPE_RESULT) {
1668									if (account.setAvatar(avatar.getFilename())) {
1669										databaseBackend.updateAccount(account);
1670									}
1671									callback.success(avatar);
1672								} else {
1673									callback.error(
1674											R.string.error_publish_avatar_server_reject,
1675											avatar);
1676								}
1677							}
1678						});
1679					} else {
1680						callback.error(
1681								R.string.error_publish_avatar_server_reject,
1682								avatar);
1683					}
1684				}
1685			});
1686		} else {
1687			callback.error(R.string.error_publish_avatar_converting, null);
1688		}
1689	}
1690
1691	public void fetchAvatar(Account account, Avatar avatar) {
1692		fetchAvatar(account, avatar, null);
1693	}
1694
1695	public void fetchAvatar(Account account, final Avatar avatar,
1696			final UiCallback<Avatar> callback) {
1697		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1698		sendIqPacket(account, packet, new OnIqPacketReceived() {
1699
1700			@Override
1701			public void onIqPacketReceived(Account account, IqPacket result) {
1702				final String ERROR = account.getJid().toBareJid()
1703					+ ": fetching avatar for " + avatar.owner + " failed ";
1704				if (result.getType() == IqPacket.TYPE_RESULT) {
1705					avatar.image = mIqParser.avatarData(result);
1706					if (avatar.image != null) {
1707						if (getFileBackend().save(avatar)) {
1708							if (account.getJid().toBareJid().equals(avatar.owner)) {
1709								if (account.setAvatar(avatar.getFilename())) {
1710									databaseBackend.updateAccount(account);
1711								}
1712								getAvatarService().clear(account);
1713								updateConversationUi();
1714								updateAccountUi();
1715							} else {
1716								Contact contact = account.getRoster()
1717									.getContact(avatar.owner);
1718								contact.setAvatar(avatar.getFilename());
1719								getAvatarService().clear(contact);
1720								updateConversationUi();
1721								updateRosterUi();
1722							}
1723							if (callback != null) {
1724								callback.success(avatar);
1725							}
1726							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1727									+ ": succesfully fetched avatar for "
1728									+ avatar.owner);
1729							return;
1730						}
1731					} else {
1732
1733						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1734					}
1735				} else {
1736					Element error = result.findChild("error");
1737					if (error == null) {
1738						Log.d(Config.LOGTAG, ERROR + "(server error)");
1739					} else {
1740						Log.d(Config.LOGTAG, ERROR + error.toString());
1741					}
1742				}
1743				if (callback != null) {
1744					callback.error(0, null);
1745				}
1746
1747			}
1748		});
1749	}
1750
1751	public void checkForAvatar(Account account,
1752			final UiCallback<Avatar> callback) {
1753		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1754		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1755
1756			@Override
1757			public void onIqPacketReceived(Account account, IqPacket packet) {
1758				if (packet.getType() == IqPacket.TYPE_RESULT) {
1759					Element pubsub = packet.findChild("pubsub",
1760							"http://jabber.org/protocol/pubsub");
1761					if (pubsub != null) {
1762						Element items = pubsub.findChild("items");
1763						if (items != null) {
1764							Avatar avatar = Avatar.parseMetadata(items);
1765							if (avatar != null) {
1766								avatar.owner = account.getJid().toBareJid();
1767								if (fileBackend.isAvatarCached(avatar)) {
1768									if (account.setAvatar(avatar.getFilename())) {
1769										databaseBackend.updateAccount(account);
1770									}
1771									getAvatarService().clear(account);
1772									callback.success(avatar);
1773								} else {
1774									fetchAvatar(account, avatar, callback);
1775								}
1776								return;
1777							}
1778						}
1779					}
1780				}
1781				callback.error(0, null);
1782			}
1783		});
1784	}
1785
1786	public void deleteContactOnServer(Contact contact) {
1787		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1788		contact.resetOption(Contact.Options.DIRTY_PUSH);
1789		contact.setOption(Contact.Options.DIRTY_DELETE);
1790		Account account = contact.getAccount();
1791		if (account.getStatus() == Account.State.ONLINE) {
1792			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1793			Element item = iq.query("jabber:iq:roster").addChild("item");
1794			item.setAttribute("jid", contact.getJid().toString());
1795			item.setAttribute("subscription", "remove");
1796			account.getXmppConnection().sendIqPacket(iq, null);
1797		}
1798	}
1799
1800	public void updateConversation(Conversation conversation) {
1801		this.databaseBackend.updateConversation(conversation);
1802	}
1803
1804	public void reconnectAccount(final Account account, final boolean force) {
1805		new Thread(new Runnable() {
1806
1807			@Override
1808			public void run() {
1809				if (account.getXmppConnection() != null) {
1810					disconnect(account, force);
1811				}
1812				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1813					if (account.getXmppConnection() == null) {
1814						account.setXmppConnection(createConnection(account));
1815					}
1816					Thread thread = new Thread(account.getXmppConnection());
1817					thread.start();
1818					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1819							false);
1820				} else {
1821					account.getRoster().clearPresences();
1822					account.setXmppConnection(null);
1823				}
1824			}
1825		}).start();
1826	}
1827
1828	public void invite(Conversation conversation, Jid contact) {
1829		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1830		sendMessagePacket(conversation.getAccount(), packet);
1831	}
1832
1833	public void resetSendingToWaiting(Account account) {
1834		for (Conversation conversation : getConversations()) {
1835			if (conversation.getAccount() == account) {
1836				for (Message message : conversation.getMessages()) {
1837					if (message.getType() != Message.TYPE_IMAGE
1838							&& message.getStatus() == Message.STATUS_UNSEND) {
1839						markMessage(message, Message.STATUS_WAITING);
1840							}
1841				}
1842			}
1843		}
1844	}
1845
1846	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1847			final int status) {
1848		if (uuid == null) {
1849			return false;
1850		} else {
1851			for (Conversation conversation : getConversations()) {
1852				if (conversation.getContactJid().equals(recipient)
1853						&& conversation.getAccount().equals(account)) {
1854					return markMessage(conversation, uuid, status);
1855						}
1856			}
1857			return false;
1858		}
1859	}
1860
1861	public boolean markMessage(Conversation conversation, String uuid,
1862			int status) {
1863		if (uuid == null) {
1864			return false;
1865		} else {
1866			for (Message message : conversation.getMessages()) {
1867				if (uuid.equals(message.getUuid())
1868						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1869							.equals(message.getRemoteMsgId()))) {
1870					markMessage(message, status);
1871					return true;
1872							}
1873			}
1874			return false;
1875		}
1876	}
1877
1878	public void markMessage(Message message, int status) {
1879		if (status == Message.STATUS_SEND_FAILED
1880				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1881					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1882			return;
1883					}
1884		message.setStatus(status);
1885		databaseBackend.updateMessage(message);
1886		updateConversationUi();
1887	}
1888
1889	public SharedPreferences getPreferences() {
1890		return PreferenceManager
1891			.getDefaultSharedPreferences(getApplicationContext());
1892	}
1893
1894	public boolean forceEncryption() {
1895		return getPreferences().getBoolean("force_encryption", false);
1896	}
1897
1898	public boolean confirmMessages() {
1899		return getPreferences().getBoolean("confirm_messages", true);
1900	}
1901
1902	public boolean saveEncryptedMessages() {
1903		return !getPreferences().getBoolean("dont_save_encrypted", false);
1904	}
1905
1906	public boolean indicateReceived() {
1907		return getPreferences().getBoolean("indicate_received", false);
1908	}
1909
1910	public void updateConversationUi() {
1911		if (mOnConversationUpdate != null) {
1912			mOnConversationUpdate.onConversationUpdate();
1913		}
1914	}
1915
1916	public void updateAccountUi() {
1917		if (mOnAccountUpdate != null) {
1918			mOnAccountUpdate.onAccountUpdate();
1919		}
1920	}
1921
1922	public void updateRosterUi() {
1923		if (mOnRosterUpdate != null) {
1924			mOnRosterUpdate.onRosterUpdate();
1925		}
1926	}
1927
1928	public Account findAccountByJid(final Jid accountJid) {
1929		for (Account account : this.accounts) {
1930			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1931				return account;
1932			}
1933		}
1934		return null;
1935	}
1936
1937	public Conversation findConversationByUuid(String uuid) {
1938		for (Conversation conversation : getConversations()) {
1939			if (conversation.getUuid().equals(uuid)) {
1940				return conversation;
1941			}
1942		}
1943		return null;
1944	}
1945
1946	public void markRead(Conversation conversation, boolean calledByUi) {
1947		mNotificationService.clear(conversation);
1948		final Message markable = conversation.getLatestMarkableMessage();
1949		conversation.markRead();
1950		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1951			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1952			Account account = conversation.getAccount();
1953			final Jid to = markable.getCounterpart();
1954			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1955			this.sendMessagePacket(conversation.getAccount(),packet);
1956		}
1957		if (!calledByUi) {
1958			updateConversationUi();
1959		}
1960	}
1961
1962	public void failWaitingOtrMessages(Conversation conversation) {
1963		for (Message message : conversation.getMessages()) {
1964			if (message.getEncryption() == Message.ENCRYPTION_OTR
1965					&& message.getStatus() == Message.STATUS_WAITING) {
1966				markMessage(message, Message.STATUS_SEND_FAILED);
1967					}
1968		}
1969	}
1970
1971	public SecureRandom getRNG() {
1972		return this.mRandom;
1973	}
1974
1975	public MemorizingTrustManager getMemorizingTrustManager() {
1976		return this.mMemorizingTrustManager;
1977	}
1978
1979	public PowerManager getPowerManager() {
1980		return this.pm;
1981	}
1982
1983	public LruCache<String, Bitmap> getBitmapCache() {
1984		return this.mBitmapCache;
1985	}
1986
1987	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1988		if (account.getStatus() == Account.State.ONLINE) {
1989			MessagePacket error = this.mMessageGenerator
1990				.generateNotAcceptable(packet);
1991			sendMessagePacket(account, error);
1992		}
1993	}
1994
1995	public void syncRosterToDisk(final Account account) {
1996		new Thread(new Runnable() {
1997
1998			@Override
1999			public void run() {
2000				databaseBackend.writeRoster(account.getRoster());
2001			}
2002		}).start();
2003
2004	}
2005
2006	public List<String> getKnownHosts() {
2007		List<String> hosts = new ArrayList<>();
2008		for (Account account : getAccounts()) {
2009			if (!hosts.contains(account.getServer().toString())) {
2010				hosts.add(account.getServer().toString());
2011			}
2012			for (Contact contact : account.getRoster().getContacts()) {
2013				if (contact.showInRoster()) {
2014					final String server = contact.getServer().toString();
2015					if (server != null && !hosts.contains(server)) {
2016						hosts.add(server);
2017					}
2018				}
2019			}
2020		}
2021		return hosts;
2022	}
2023
2024	public List<String> getKnownConferenceHosts() {
2025		ArrayList<String> mucServers = new ArrayList<>();
2026		for (Account account : accounts) {
2027			if (account.getXmppConnection() != null) {
2028				String server = account.getXmppConnection().getMucServer();
2029				if (server != null && !mucServers.contains(server)) {
2030					mucServers.add(server);
2031				}
2032			}
2033		}
2034		return mucServers;
2035	}
2036
2037	public void sendMessagePacket(Account account, MessagePacket packet) {
2038		XmppConnection connection = account.getXmppConnection();
2039		if (connection != null) {
2040			connection.sendMessagePacket(packet);
2041		}
2042	}
2043
2044	public void sendPresencePacket(Account account, PresencePacket packet) {
2045		XmppConnection connection = account.getXmppConnection();
2046		if (connection != null) {
2047			connection.sendPresencePacket(packet);
2048		}
2049	}
2050
2051	public void sendIqPacket(Account account, IqPacket packet,
2052			OnIqPacketReceived callback) {
2053		XmppConnection connection = account.getXmppConnection();
2054		if (connection != null) {
2055			connection.sendIqPacket(packet, callback);
2056		}
2057	}
2058
2059	public MessageGenerator getMessageGenerator() {
2060		return this.mMessageGenerator;
2061	}
2062
2063	public PresenceGenerator getPresenceGenerator() {
2064		return this.mPresenceGenerator;
2065	}
2066
2067	public IqGenerator getIqGenerator() {
2068		return this.mIqGenerator;
2069	}
2070
2071	public JingleConnectionManager getJingleConnectionManager() {
2072		return this.mJingleConnectionManager;
2073	}
2074
2075	public List<Contact> findContacts(Jid jid) {
2076		ArrayList<Contact> contacts = new ArrayList<>();
2077		for (Account account : getAccounts()) {
2078			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2079				Contact contact = account.getRoster().getContactFromRoster(jid);
2080				if (contact != null) {
2081					contacts.add(contact);
2082				}
2083			}
2084		}
2085		return contacts;
2086	}
2087
2088	public NotificationService getNotificationService() {
2089		return this.mNotificationService;
2090	}
2091
2092	public HttpConnectionManager getHttpConnectionManager() {
2093		return this.mHttpConnectionManager;
2094	}
2095
2096	public void resendFailedMessages(Message message) {
2097		List<Message> messages = new ArrayList<>();
2098		Message current = message;
2099		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2100			messages.add(current);
2101			if (current.mergeable(current.next())) {
2102				current = current.next();
2103			} else {
2104				break;
2105			}
2106		}
2107		for (Message msg : messages) {
2108			markMessage(msg, Message.STATUS_WAITING);
2109			this.resendMessage(msg);
2110		}
2111	}
2112
2113	public interface OnConversationUpdate {
2114		public void onConversationUpdate();
2115	}
2116
2117	public interface OnAccountUpdate {
2118		public void onAccountUpdate();
2119	}
2120
2121	public interface OnRosterUpdate {
2122		public void onRosterUpdate();
2123	}
2124
2125	private interface OnConferenceOptionsPushed {
2126		public void onPushSucceeded();
2127		public void onPushFailed();
2128	}
2129
2130	public class XmppConnectionBinder extends Binder {
2131		public XmppConnectionService getService() {
2132			return XmppConnectionService.this;
2133		}
2134	}
2135}