XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.math.BigInteger;
  36import java.security.SecureRandom;
  37import java.util.ArrayList;
  38import java.util.Collections;
  39import java.util.Comparator;
  40import java.util.Hashtable;
  41import java.util.List;
  42import java.util.Locale;
  43import java.util.concurrent.CopyOnWriteArrayList;
  44
  45import de.duenndns.ssl.MemorizingTrustManager;
  46import eu.siacs.conversations.Config;
  47import eu.siacs.conversations.R;
  48import eu.siacs.conversations.crypto.PgpEngine;
  49import eu.siacs.conversations.entities.Account;
  50import eu.siacs.conversations.entities.Bookmark;
  51import eu.siacs.conversations.entities.Contact;
  52import eu.siacs.conversations.entities.Conversation;
  53import eu.siacs.conversations.entities.Downloadable;
  54import eu.siacs.conversations.entities.DownloadableFile;
  55import eu.siacs.conversations.entities.DownloadablePlaceholder;
  56import eu.siacs.conversations.entities.Message;
  57import eu.siacs.conversations.entities.MucOptions;
  58import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  59import eu.siacs.conversations.entities.Presences;
  60import eu.siacs.conversations.generator.IqGenerator;
  61import eu.siacs.conversations.generator.MessageGenerator;
  62import eu.siacs.conversations.generator.PresenceGenerator;
  63import eu.siacs.conversations.http.HttpConnectionManager;
  64import eu.siacs.conversations.parser.IqParser;
  65import eu.siacs.conversations.parser.MessageParser;
  66import eu.siacs.conversations.parser.PresenceParser;
  67import eu.siacs.conversations.persistance.DatabaseBackend;
  68import eu.siacs.conversations.persistance.FileBackend;
  69import eu.siacs.conversations.ui.UiCallback;
  70import eu.siacs.conversations.utils.CryptoHelper;
  71import eu.siacs.conversations.utils.ExceptionHelper;
  72import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  73import eu.siacs.conversations.utils.PRNGFixes;
  74import eu.siacs.conversations.utils.PhoneHelper;
  75import eu.siacs.conversations.xml.Element;
  76import eu.siacs.conversations.xmpp.OnBindListener;
  77import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  78import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  79import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  80import eu.siacs.conversations.xmpp.OnStatusChanged;
  81import eu.siacs.conversations.xmpp.XmppConnection;
  82import eu.siacs.conversations.xmpp.forms.Data;
  83import eu.siacs.conversations.xmpp.forms.Field;
  84import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  85import eu.siacs.conversations.xmpp.jid.Jid;
  86import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  87import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  88import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  89import eu.siacs.conversations.xmpp.pep.Avatar;
  90import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  91import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  92import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  93
  94public class XmppConnectionService extends Service implements OnPhoneContactsLoadedListener {
  95
  96	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
  97	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  98	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
  99	private ContentObserver contactObserver = new ContentObserver(null) {
 100		@Override
 101		public void onChange(boolean selfChange) {
 102			super.onChange(selfChange);
 103			Intent intent = new Intent(getApplicationContext(),
 104					XmppConnectionService.class);
 105			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 106			startService(intent);
 107		}
 108	};
 109	private final IBinder mBinder = new XmppConnectionBinder();
 110	public DatabaseBackend databaseBackend;
 111	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 112
 113		@Override
 114		public void onContactStatusChanged(Contact contact, boolean online) {
 115			Conversation conversation = find(getConversations(), contact);
 116			if (conversation != null) {
 117				if (online && contact.getPresences().size() > 1) {
 118					conversation.endOtrIfNeeded();
 119				} else {
 120					conversation.resetOtrSession();
 121				}
 122				if (online && (contact.getPresences().size() == 1)) {
 123					sendUnsentMessages(conversation);
 124				}
 125			}
 126		}
 127	};
 128	private FileBackend fileBackend = new FileBackend(this);
 129	private MemorizingTrustManager mMemorizingTrustManager;
 130	private NotificationService mNotificationService = new NotificationService(
 131			this);
 132	private MessageParser mMessageParser = new MessageParser(this);
 133	private PresenceParser mPresenceParser = new PresenceParser(this);
 134	private IqParser mIqParser = new IqParser(this);
 135	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 136	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 137	private List<Account> accounts;
 138	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 139	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 140			this);
 141	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 142			this);
 143	private AvatarService mAvatarService = new AvatarService(this);
 144	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 145	private OnConversationUpdate mOnConversationUpdate = null;
 146	private Integer convChangedListenerCount = 0;
 147	private OnAccountUpdate mOnAccountUpdate = null;
 148	private OnStatusChanged statusListener = new OnStatusChanged() {
 149
 150		@Override
 151		public void onStatusChanged(Account account) {
 152			XmppConnection connection = account.getXmppConnection();
 153			if (mOnAccountUpdate != null) {
 154				mOnAccountUpdate.onAccountUpdate();
 155			}
 156			if (account.getStatus() == Account.State.ONLINE) {
 157				for (Conversation conversation : account.pendingConferenceLeaves) {
 158					leaveMuc(conversation);
 159				}
 160				for (Conversation conversation : account.pendingConferenceJoins) {
 161					joinMuc(conversation);
 162				}
 163				mMessageArchiveService.executePendingQueries(account);
 164				mJingleConnectionManager.cancelInTransmission();
 165				List<Conversation> conversations = getConversations();
 166				for (Conversation conversation : conversations) {
 167					if (conversation.getAccount() == account) {
 168						conversation.startOtrIfNeeded();
 169						sendUnsentMessages(conversation);
 170					}
 171				}
 172				if (connection != null && connection.getFeatures().csi()) {
 173					if (checkListeners()) {
 174						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 175								+ " sending csi//inactive");
 176						connection.sendInactive();
 177					} else {
 178						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 179								+ " sending csi//active");
 180						connection.sendActive();
 181					}
 182				}
 183				syncDirtyContacts(account);
 184				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 185			} else if (account.getStatus() == Account.State.OFFLINE) {
 186				resetSendingToWaiting(account);
 187				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 188					int timeToReconnect = mRandom.nextInt(50) + 10;
 189					scheduleWakeupCall(timeToReconnect, false);
 190				}
 191			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 192				databaseBackend.updateAccount(account);
 193				reconnectAccount(account, true);
 194			} else if ((account.getStatus() != Account.State.CONNECTING)
 195					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 196				if (connection != null) {
 197					int next = connection.getTimeToNextAttempt();
 198					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 199							+ ": error connecting account. try again in "
 200							+ next + "s for the "
 201							+ (connection.getAttempt() + 1) + " time");
 202					scheduleWakeupCall((int) (next * 1.2), false);
 203				}
 204					}
 205			getNotificationService().updateErrorNotification();
 206		}
 207	};
 208
 209	private int accountChangedListenerCount = 0;
 210	private OnRosterUpdate mOnRosterUpdate = null;
 211	private int rosterChangedListenerCount = 0;
 212	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 213	private int mucRosterChangedListenerCount = 0;
 214	private SecureRandom mRandom;
 215	private FileObserver fileObserver = new FileObserver(
 216			FileBackend.getConversationsImageDirectory()) {
 217
 218		@Override
 219		public void onEvent(int event, String path) {
 220			if (event == FileObserver.DELETE) {
 221				markFileDeleted(path.split("\\.")[0]);
 222			}
 223		}
 224	};
 225	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 226
 227		@Override
 228		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 229			mJingleConnectionManager.deliverPacket(account, packet);
 230		}
 231	};
 232
 233	private OpenPgpServiceConnection pgpServiceConnection;
 234	private PgpEngine mPgpEngine = null;
 235	private Intent pingIntent;
 236	private PendingIntent pendingPingIntent = null;
 237	private WakeLock wakeLock;
 238	private PowerManager pm;
 239	private OnBindListener mOnBindListener = new OnBindListener() {
 240
 241		@Override
 242		public void onBind(final Account account) {
 243			account.getRoster().clearPresences();
 244			account.clearPresences(); // self presences
 245			account.pendingConferenceJoins.clear();
 246			account.pendingConferenceLeaves.clear();
 247			fetchRosterFromServer(account);
 248			fetchBookmarks(account);
 249			sendPresencePacket(account,mPresenceGenerator.sendPresence(account));
 250			connectMultiModeConversations(account);
 251			updateConversationUi();
 252		}
 253	};
 254
 255	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 256
 257		@Override
 258		public void onMessageAcknowledged(Account account, String uuid) {
 259			for (final Conversation conversation : getConversations()) {
 260				if (conversation.getAccount() == account) {
 261					Message message = conversation.findUnsentMessageWithUuid(uuid);
 262					if (message != null) {
 263						markMessage(message, Message.STATUS_SEND);
 264						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 265							databaseBackend.updateConversation(conversation);
 266						}
 267					}
 268				}
 269			}
 270		}
 271	};
 272	private LruCache<String, Bitmap> mBitmapCache;
 273	private IqGenerator mIqGenerator = new IqGenerator(this);
 274	private Thread mPhoneContactMergerThread;
 275
 276	public PgpEngine getPgpEngine() {
 277		if (pgpServiceConnection.isBound()) {
 278			if (this.mPgpEngine == null) {
 279				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 280							getApplicationContext(),
 281							pgpServiceConnection.getService()), this);
 282			}
 283			return mPgpEngine;
 284		} else {
 285			return null;
 286		}
 287
 288	}
 289
 290	public FileBackend getFileBackend() {
 291		return this.fileBackend;
 292	}
 293
 294	public AvatarService getAvatarService() {
 295		return this.mAvatarService;
 296	}
 297
 298	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 299		final Message message;
 300		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 301			message = new Message(conversation, "",
 302					Message.ENCRYPTION_DECRYPTED);
 303		} else {
 304			message = new Message(conversation, "",
 305					conversation.getNextEncryption(forceEncryption()));
 306		}
 307		message.setCounterpart(conversation.getNextCounterpart());
 308		message.setType(Message.TYPE_FILE);
 309		message.setStatus(Message.STATUS_OFFERED);
 310		String path = getFileBackend().getOriginalPath(uri);
 311		if (path!=null) {
 312			message.setRelativeFilePath(path);
 313			getFileBackend().updateFileParams(message);
 314			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 315				getPgpEngine().encrypt(message, callback);
 316			} else {
 317				callback.success(message);
 318			}
 319		} else {
 320			new Thread(new Runnable() {
 321				@Override
 322				public void run() {
 323					try {
 324						getFileBackend().copyFileToPrivateStorage(message, uri);
 325						getFileBackend().updateFileParams(message);
 326						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 327							getPgpEngine().encrypt(message, callback);
 328						} else {
 329							callback.success(message);
 330						}
 331					} catch (FileBackend.FileCopyException e) {
 332						callback.error(e.getResId(),message);
 333					}
 334				}
 335			}).start();
 336
 337		}
 338	}
 339
 340	public void attachImageToConversation(final Conversation conversation,
 341			final Uri uri, final UiCallback<Message> callback) {
 342		final Message message;
 343		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 344			message = new Message(conversation, "",
 345					Message.ENCRYPTION_DECRYPTED);
 346		} else {
 347			message = new Message(conversation, "",
 348					conversation.getNextEncryption(forceEncryption()));
 349		}
 350		message.setCounterpart(conversation.getNextCounterpart());
 351		message.setType(Message.TYPE_IMAGE);
 352		message.setStatus(Message.STATUS_OFFERED);
 353		new Thread(new Runnable() {
 354
 355			@Override
 356			public void run() {
 357				try {
 358					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 359					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 360						getPgpEngine().encrypt(message, callback);
 361					} else {
 362						callback.success(message);
 363					}
 364				} catch (FileBackend.FileCopyException e) {
 365					callback.error(e.getResId(), message);
 366				}
 367			}
 368		}).start();
 369	}
 370
 371	public Conversation find(Bookmark bookmark) {
 372		return find(bookmark.getAccount(), bookmark.getJid());
 373	}
 374
 375	public Conversation find(final Account account, final Jid jid) {
 376		return find(getConversations(), account, jid);
 377	}
 378
 379	@Override
 380	public int onStartCommand(Intent intent, int flags, int startId) {
 381		if (intent != null && intent.getAction() != null) {
 382			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 383				PhoneHelper.loadPhoneContacts(getApplicationContext(), new ArrayList<Bundle>(), this);
 384				return START_STICKY;
 385			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 386				logoutAndSave();
 387				return START_NOT_STICKY;
 388			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 389				mNotificationService.clear();
 390			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 391				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 392				toggleForegroundService();
 393			}
 394		}
 395		this.wakeLock.acquire();
 396
 397		for (Account account : accounts) {
 398			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 399				if (!hasInternetConnection()) {
 400					account.setStatus(Account.State.NO_INTERNET);
 401					if (statusListener != null) {
 402						statusListener.onStatusChanged(account);
 403					}
 404				} else {
 405					if (account.getStatus() == Account.State.NO_INTERNET) {
 406						account.setStatus(Account.State.OFFLINE);
 407						if (statusListener != null) {
 408							statusListener.onStatusChanged(account);
 409						}
 410					}
 411					if (account.getStatus() == Account.State.ONLINE) {
 412						long lastReceived = account.getXmppConnection()
 413							.getLastPacketReceived();
 414						long lastSent = account.getXmppConnection()
 415							.getLastPingSent();
 416						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 417							Log.d(Config.LOGTAG, account.getJid()
 418									+ ": ping timeout");
 419							this.reconnectAccount(account, true);
 420						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 421							account.getXmppConnection().sendPing();
 422							this.scheduleWakeupCall(2, false);
 423						}
 424					} else if (account.getStatus() == Account.State.OFFLINE) {
 425						if (account.getXmppConnection() == null) {
 426							account.setXmppConnection(this
 427									.createConnection(account));
 428						}
 429						new Thread(account.getXmppConnection()).start();
 430					} else if ((account.getStatus() == Account.State.CONNECTING)
 431							&& ((SystemClock.elapsedRealtime() - account
 432									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 433						Log.d(Config.LOGTAG, account.getJid()
 434								+ ": time out during connect reconnecting");
 435						reconnectAccount(account, true);
 436					} else {
 437						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 438							reconnectAccount(account, true);
 439						}
 440					}
 441					// in any case. reschedule wakup call
 442					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 443				}
 444				if (mOnAccountUpdate != null) {
 445					mOnAccountUpdate.onAccountUpdate();
 446				}
 447			}
 448		}
 449		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 450			if (!pm.isScreenOn()) {
 451			removeStaleListeners();
 452			}*/
 453		if (wakeLock.isHeld()) {
 454			try {
 455				wakeLock.release();
 456			} catch (final RuntimeException ignored) {
 457			}
 458		}
 459		return START_STICKY;
 460	}
 461
 462	public boolean hasInternetConnection() {
 463		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 464			.getSystemService(Context.CONNECTIVITY_SERVICE);
 465		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 466		return activeNetwork != null && activeNetwork.isConnected();
 467	}
 468
 469	@SuppressLint("TrulyRandom")
 470	@Override
 471	public void onCreate() {
 472		ExceptionHelper.init(getApplicationContext());
 473		PRNGFixes.apply();
 474		this.mRandom = new SecureRandom();
 475		this.mMemorizingTrustManager = new MemorizingTrustManager(
 476				getApplicationContext());
 477
 478		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 479		int cacheSize = maxMemory / 8;
 480		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 481			@Override
 482			protected int sizeOf(String key, Bitmap bitmap) {
 483				return bitmap.getByteCount() / 1024;
 484			}
 485		};
 486
 487		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 488		this.accounts = databaseBackend.getAccounts();
 489
 490		for (Account account : this.accounts) {
 491			account.initOtrEngine(this);
 492			this.databaseBackend.readRoster(account.getRoster());
 493		}
 494		initConversations();
 495		PhoneHelper.loadPhoneContacts(getApplicationContext(),new ArrayList<Bundle>(), this);
 496
 497		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 498		this.fileObserver.startWatching();
 499		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 500		this.pgpServiceConnection.bindToService();
 501
 502		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 503		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 504		toggleForegroundService();
 505	}
 506
 507	public void toggleForegroundService() {
 508		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 509			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 510		} else {
 511			stopForeground(true);
 512		}
 513	}
 514
 515	@Override
 516	public void onTaskRemoved(Intent rootIntent) {
 517		super.onTaskRemoved(rootIntent);
 518		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 519			this.logoutAndSave();
 520		}
 521	}
 522
 523	private void logoutAndSave() {
 524		for (Account account : accounts) {
 525			databaseBackend.writeRoster(account.getRoster());
 526			if (account.getXmppConnection() != null) {
 527				disconnect(account, false);
 528			}
 529		}
 530		Context context = getApplicationContext();
 531		AlarmManager alarmManager = (AlarmManager) context
 532			.getSystemService(Context.ALARM_SERVICE);
 533		Intent intent = new Intent(context, EventReceiver.class);
 534		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 535		Log.d(Config.LOGTAG, "good bye");
 536		stopSelf();
 537	}
 538
 539	protected void scheduleWakeupCall(int seconds, boolean ping) {
 540		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 541		Context context = getApplicationContext();
 542		AlarmManager alarmManager = (AlarmManager) context
 543			.getSystemService(Context.ALARM_SERVICE);
 544
 545		if (ping) {
 546			if (this.pingIntent == null) {
 547				this.pingIntent = new Intent(context, EventReceiver.class);
 548				this.pingIntent.setAction("ping");
 549				this.pingIntent.putExtra("time", timeToWake);
 550				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 551						this.pingIntent, 0);
 552				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 553						timeToWake, pendingPingIntent);
 554			} else {
 555				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 556				if (scheduledTime < SystemClock.elapsedRealtime()
 557						|| (scheduledTime > timeToWake)) {
 558					this.pingIntent.putExtra("time", timeToWake);
 559					alarmManager.cancel(this.pendingPingIntent);
 560					this.pendingPingIntent = PendingIntent.getBroadcast(
 561							context, 0, this.pingIntent, 0);
 562					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 563							timeToWake, pendingPingIntent);
 564						}
 565			}
 566		} else {
 567			Intent intent = new Intent(context, EventReceiver.class);
 568			intent.setAction("ping_check");
 569			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 570					intent, 0);
 571			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 572					alarmIntent);
 573		}
 574
 575	}
 576
 577	public XmppConnection createConnection(Account account) {
 578		SharedPreferences sharedPref = getPreferences();
 579		account.setResource(sharedPref.getString("resource", "mobile")
 580				.toLowerCase(Locale.getDefault()));
 581		XmppConnection connection = new XmppConnection(account, this);
 582		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 583		connection.setOnStatusChangedListener(this.statusListener);
 584		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 585		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 586		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 587		connection.setOnBindListener(this.mOnBindListener);
 588		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 589		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 590		return connection;
 591	}
 592
 593	public void sendMessage(Message message) {
 594		Account account = message.getConversation().getAccount();
 595		account.deactivateGracePeriod();
 596		Conversation conv = message.getConversation();
 597		MessagePacket packet = null;
 598		boolean saveInDb = true;
 599		boolean send = false;
 600		if (account.getStatus() == Account.State.ONLINE
 601				&& account.getXmppConnection() != null) {
 602			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 603				if (message.getCounterpart() != null) {
 604					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 605						if (!conv.hasValidOtrSession()) {
 606							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 607							message.setStatus(Message.STATUS_WAITING);
 608						} else if (conv.hasValidOtrSession()
 609								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 610							mJingleConnectionManager
 611								.createNewConnection(message);
 612								}
 613					} else {
 614						mJingleConnectionManager.createNewConnection(message);
 615					}
 616				} else {
 617					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 618						conv.startOtrIfNeeded();
 619					}
 620					message.setStatus(Message.STATUS_WAITING);
 621				}
 622			} else {
 623				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 624					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 625						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 626						message.setStatus(Message.STATUS_WAITING);
 627					} else if (conv.hasValidOtrSession()) {
 628						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 629							packet = mMessageGenerator.generateOtrChat(message);
 630							send = true;
 631						} else {
 632							message.setStatus(Message.STATUS_WAITING);
 633							conv.startOtrIfNeeded();
 634						}
 635					} else {
 636						message.setStatus(Message.STATUS_WAITING);
 637					}
 638				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 639					message.getConversation().endOtrIfNeeded();
 640					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 641						@Override
 642						public void onMessageFound(Message message) {
 643							markMessage(message,Message.STATUS_SEND_FAILED);
 644						}
 645					});
 646					packet = mMessageGenerator.generatePgpChat(message);
 647					send = true;
 648				} else {
 649					message.getConversation().endOtrIfNeeded();
 650					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 651						@Override
 652						public void onMessageFound(Message message) {
 653							markMessage(message,Message.STATUS_SEND_FAILED);
 654						}
 655					});
 656					packet = mMessageGenerator.generateChat(message);
 657					send = true;
 658				}
 659			}
 660			if (!account.getXmppConnection().getFeatures().sm()
 661					&& conv.getMode() != Conversation.MODE_MULTI) {
 662				message.setStatus(Message.STATUS_SEND);
 663					}
 664		} else {
 665			message.setStatus(Message.STATUS_WAITING);
 666			if (message.getType() == Message.TYPE_TEXT) {
 667				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 668					String pgpBody = message.getEncryptedBody();
 669					String decryptedBody = message.getBody();
 670					message.setBody(pgpBody);
 671					message.setEncryption(Message.ENCRYPTION_PGP);
 672					databaseBackend.createMessage(message);
 673					saveInDb = false;
 674					message.setBody(decryptedBody);
 675					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 676				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 677					if (!conv.hasValidOtrSession()
 678							&& message.getCounterpart() != null) {
 679						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 680							}
 681				}
 682			}
 683
 684		}
 685		conv.add(message);
 686		if (saveInDb) {
 687			if (message.getEncryption() == Message.ENCRYPTION_NONE
 688					|| saveEncryptedMessages()) {
 689				databaseBackend.createMessage(message);
 690					}
 691		}
 692		if ((send) && (packet != null)) {
 693			sendMessagePacket(account, packet);
 694		}
 695		updateConversationUi();
 696	}
 697
 698	private void sendUnsentMessages(Conversation conversation) {
 699		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 700
 701			@Override
 702			public void onMessageFound(Message message) {
 703				resendMessage(message);
 704			}
 705		});
 706	}
 707
 708	private void resendMessage(Message message) {
 709		Account account = message.getConversation().getAccount();
 710		MessagePacket packet = null;
 711		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 712			Presences presences = message.getConversation().getContact()
 713				.getPresences();
 714			if (!message.getConversation().hasValidOtrSession()) {
 715				if ((message.getCounterpart() != null)
 716						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 717					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 718				} else {
 719					if (presences.size() == 1) {
 720						String presence = presences.asStringArray()[0];
 721						message.getConversation().startOtrSession(presence, true);
 722					}
 723				}
 724			} else {
 725				if (message.getConversation().getOtrSession()
 726						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 727					try {
 728						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 729						if (message.getType() == Message.TYPE_TEXT) {
 730							packet = mMessageGenerator.generateOtrChat(message,
 731									true);
 732						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 733							mJingleConnectionManager.createNewConnection(message);
 734						}
 735					} catch (InvalidJidException e) {
 736
 737					}
 738						}
 739			}
 740		} else if (message.getType() == Message.TYPE_TEXT) {
 741			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 742				packet = mMessageGenerator.generateChat(message, true);
 743			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 744					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 745				packet = mMessageGenerator.generatePgpChat(message, true);
 746					}
 747		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 748			Contact contact = message.getConversation().getContact();
 749			Presences presences = contact.getPresences();
 750			if ((message.getCounterpart() != null)
 751					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 752				markMessage(message, Message.STATUS_OFFERED);
 753				mJingleConnectionManager.createNewConnection(message);
 754			} else {
 755				if (presences.size() == 1) {
 756					String presence = presences.asStringArray()[0];
 757					try {
 758						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 759					} catch (InvalidJidException e) {
 760						return;
 761					}
 762					markMessage(message, Message.STATUS_OFFERED);
 763					mJingleConnectionManager.createNewConnection(message);
 764				}
 765			}
 766		}
 767		if (packet != null) {
 768			if (!account.getXmppConnection().getFeatures().sm()
 769					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 770				markMessage(message, Message.STATUS_SEND);
 771			} else {
 772				markMessage(message, Message.STATUS_UNSEND);
 773			}
 774			sendMessagePacket(account, packet);
 775		}
 776	}
 777
 778	public void fetchRosterFromServer(Account account) {
 779		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 780		if (!"".equals(account.getRosterVersion())) {
 781			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 782					+ ": fetching roster version " + account.getRosterVersion());
 783		} else {
 784			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 785		}
 786		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 787				account.getRosterVersion());
 788		account.getXmppConnection().sendIqPacket(iqPacket,
 789				new OnIqPacketReceived() {
 790
 791					@Override
 792					public void onIqPacketReceived(final Account account,
 793												   IqPacket packet) {
 794						Element query = packet.findChild("query");
 795						if (query != null) {
 796							account.getRoster().markAllAsNotInRoster();
 797							mIqParser.rosterItems(account, query);
 798						}
 799					}
 800				});
 801	}
 802
 803	public void fetchBookmarks(Account account) {
 804		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 805		Element query = iqPacket.query("jabber:iq:private");
 806		query.addChild("storage", "storage:bookmarks");
 807		OnIqPacketReceived callback = new OnIqPacketReceived() {
 808
 809			@Override
 810			public void onIqPacketReceived(Account account, IqPacket packet) {
 811				Element query = packet.query();
 812				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 813				Element storage = query.findChild("storage",
 814						"storage:bookmarks");
 815				if (storage != null) {
 816					for (Element item : storage.getChildren()) {
 817						if (item.getName().equals("conference")) {
 818							Bookmark bookmark = Bookmark.parse(item, account);
 819							bookmarks.add(bookmark);
 820							Conversation conversation = find(bookmark);
 821							if (conversation != null) {
 822								conversation.setBookmark(bookmark);
 823							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 824								conversation = findOrCreateConversation(
 825										account, bookmark.getJid(), true);
 826								conversation.setBookmark(bookmark);
 827								joinMuc(conversation);
 828							}
 829						}
 830					}
 831				}
 832				account.setBookmarks(bookmarks);
 833			}
 834		};
 835		sendIqPacket(account, iqPacket, callback);
 836
 837	}
 838
 839	public void pushBookmarks(Account account) {
 840		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 841		Element query = iqPacket.query("jabber:iq:private");
 842		Element storage = query.addChild("storage", "storage:bookmarks");
 843		for (Bookmark bookmark : account.getBookmarks()) {
 844			storage.addChild(bookmark);
 845		}
 846		sendIqPacket(account, iqPacket, null);
 847	}
 848
 849	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 850		if (mPhoneContactMergerThread != null) {
 851			mPhoneContactMergerThread.interrupt();
 852		}
 853		mPhoneContactMergerThread = new Thread(new Runnable() {
 854			@Override
 855			public void run() {
 856				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 857				for (Account account : accounts) {
 858					account.getRoster().clearSystemAccounts();
 859					for (Bundle phoneContact : phoneContacts) {
 860						if (Thread.interrupted()) {
 861							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 862							return;
 863						}
 864						Jid jid;
 865						try {
 866							jid = Jid.fromString(phoneContact.getString("jid"));
 867						} catch (final InvalidJidException e) {
 868							continue;
 869						}
 870						final Contact contact = account.getRoster().getContact(jid);
 871						String systemAccount = phoneContact.getInt("phoneid")
 872								+ "#"
 873								+ phoneContact.getString("lookup");
 874						contact.setSystemAccount(systemAccount);
 875						contact.setPhotoUri(phoneContact.getString("photouri"));
 876						getAvatarService().clear(contact);
 877						contact.setSystemName(phoneContact.getString("displayname"));
 878					}
 879				}
 880				Log.d(Config.LOGTAG,"finished merging phone contacts");
 881				updateAccountUi();
 882			}
 883		});
 884		mPhoneContactMergerThread.start();
 885	}
 886
 887	private void initConversations() {
 888		synchronized (this.conversations) {
 889			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 890			for (Account account : this.accounts) {
 891				accountLookupTable.put(account.getUuid(), account);
 892			}
 893			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 894			for (Conversation conversation : this.conversations) {
 895				Account account = accountLookupTable.get(conversation.getAccountUuid());
 896				conversation.setAccount(account);
 897				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 898				checkDeletedFiles(conversation);
 899			}
 900		}
 901	}
 902
 903	public List<Conversation> getConversations() {
 904		return this.conversations;
 905	}
 906
 907	private void checkDeletedFiles(Conversation conversation) {
 908		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 909
 910			@Override
 911			public void onMessageFound(Message message) {
 912				if (!getFileBackend().isFileAvailable(message)) {
 913					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 914				}
 915			}
 916		});
 917	}
 918
 919	private void markFileDeleted(String uuid) {
 920		for (Conversation conversation : getConversations()) {
 921			Message message = conversation.findMessageWithFileAndUuid(uuid);
 922			if (message != null) {
 923				if (!getFileBackend().isFileAvailable(message)) {
 924					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 925					updateConversationUi();
 926				}
 927				return;
 928			}
 929		}
 930	}
 931
 932	public void populateWithOrderedConversations(final List<Conversation> list) {
 933		populateWithOrderedConversations(list, true);
 934	}
 935
 936	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 937		list.clear();
 938		if (includeConferences) {
 939			list.addAll(getConversations());
 940		} else {
 941			for (Conversation conversation : getConversations()) {
 942				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 943					list.add(conversation);
 944				}
 945			}
 946		}
 947		Collections.sort(list, new Comparator<Conversation>() {
 948			@Override
 949			public int compare(Conversation lhs, Conversation rhs) {
 950				Message left = lhs.getLatestMessage();
 951				Message right = rhs.getLatestMessage();
 952				if (left.getTimeSent() > right.getTimeSent()) {
 953					return -1;
 954				} else if (left.getTimeSent() < right.getTimeSent()) {
 955					return 1;
 956				} else {
 957					return 0;
 958				}
 959			}
 960		});
 961	}
 962
 963	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
 964		Log.d(Config.LOGTAG,"load more messages for "+conversation.getName() + " prior to "+MessageGenerator.getTimestamp(timestamp));
 965		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
 966			return;
 967		}
 968		new Thread(new Runnable() {
 969			@Override
 970			public void run() {
 971				final Account account = conversation.getAccount();
 972				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
 973				if (messages.size() > 0) {
 974					conversation.addAll(0, messages);
 975					callback.onMoreMessagesLoaded(messages.size(), conversation);
 976				} else if (account.getStatus() == Account.State.ONLINE && account.getXmppConnection() != null && account.getXmppConnection().getFeatures().mam()) {
 977					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
 978					if (query != null) {
 979						query.setCallback(callback);
 980					}
 981					callback.informUser(R.string.fetching_history_from_server);
 982				}
 983			}
 984		}).start();
 985	}
 986
 987	public interface OnMoreMessagesLoaded {
 988		public void onMoreMessagesLoaded(int count,Conversation conversation);
 989		public void informUser(int r);
 990	}
 991
 992	public List<Account> getAccounts() {
 993		return this.accounts;
 994	}
 995
 996	public Conversation find(List<Conversation> haystack, Contact contact) {
 997		for (Conversation conversation : haystack) {
 998			if (conversation.getContact() == contact) {
 999				return conversation;
1000			}
1001		}
1002		return null;
1003	}
1004
1005	public Conversation find(final List<Conversation> haystack,
1006			final Account account,
1007			final Jid jid) {
1008		if (jid == null ) {
1009			return null;
1010		}
1011		for (Conversation conversation : haystack) {
1012			if ((account == null || conversation.getAccount() == account)
1013					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
1014				return conversation;
1015					}
1016		}
1017		return null;
1018	}
1019
1020	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
1021		return this.findOrCreateConversation(account,jid,muc,null);
1022	}
1023
1024	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1025		synchronized (this.conversations) {
1026			Conversation conversation = find(account, jid);
1027			if (conversation != null) {
1028				return conversation;
1029			}
1030			conversation = databaseBackend.findConversation(account, jid);
1031			if (conversation != null) {
1032				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1033				conversation.setAccount(account);
1034				if (muc) {
1035					conversation.setMode(Conversation.MODE_MULTI);
1036				} else {
1037					conversation.setMode(Conversation.MODE_SINGLE);
1038				}
1039				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1040				this.databaseBackend.updateConversation(conversation);
1041			} else {
1042				String conversationName;
1043				Contact contact = account.getRoster().getContact(jid);
1044				if (contact != null) {
1045					conversationName = contact.getDisplayName();
1046				} else {
1047					conversationName = jid.getLocalpart();
1048				}
1049				if (muc) {
1050					conversation = new Conversation(conversationName, account, jid,
1051							Conversation.MODE_MULTI);
1052				} else {
1053					conversation = new Conversation(conversationName, account, jid,
1054							Conversation.MODE_SINGLE);
1055				}
1056				this.databaseBackend.createConversation(conversation);
1057			}
1058			if (query == null) {
1059				this.mMessageArchiveService.query(conversation);
1060			} else {
1061				if (query.getConversation() == null) {
1062					this.mMessageArchiveService.query(conversation,query.getStart());
1063				}
1064			}
1065			this.conversations.add(conversation);
1066			updateConversationUi();
1067			return conversation;
1068		}
1069	}
1070
1071	public void archiveConversation(Conversation conversation) {
1072		synchronized (this.conversations) {
1073			if (conversation.getMode() == Conversation.MODE_MULTI) {
1074				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1075					Bookmark bookmark = conversation.getBookmark();
1076					if (bookmark != null && bookmark.autojoin()) {
1077						bookmark.setAutojoin(false);
1078						pushBookmarks(bookmark.getAccount());
1079					}
1080				}
1081				leaveMuc(conversation);
1082			} else {
1083				conversation.endOtrIfNeeded();
1084			}
1085			this.databaseBackend.updateConversation(conversation);
1086			this.conversations.remove(conversation);
1087			updateConversationUi();
1088		}
1089	}
1090
1091	public void createAccount(Account account) {
1092		account.initOtrEngine(this);
1093		databaseBackend.createAccount(account);
1094		this.accounts.add(account);
1095		this.reconnectAccount(account, false);
1096		updateAccountUi();
1097	}
1098
1099	public void updateAccount(Account account) {
1100		this.statusListener.onStatusChanged(account);
1101		databaseBackend.updateAccount(account);
1102		reconnectAccount(account, false);
1103		updateAccountUi();
1104		getNotificationService().updateErrorNotification();
1105	}
1106
1107	public void deleteAccount(Account account) {
1108		synchronized (this.conversations) {
1109			for (Conversation conversation : conversations) {
1110				if (conversation.getAccount() == account) {
1111					if (conversation.getMode() == Conversation.MODE_MULTI) {
1112						leaveMuc(conversation);
1113					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1114						conversation.endOtrIfNeeded();
1115					}
1116					conversations.remove(conversation);
1117				}
1118			}
1119			if (account.getXmppConnection() != null) {
1120				this.disconnect(account, true);
1121			}
1122			databaseBackend.deleteAccount(account);
1123			this.accounts.remove(account);
1124			updateAccountUi();
1125			getNotificationService().updateErrorNotification();
1126		}
1127	}
1128
1129	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1130		synchronized (this) {
1131			if (checkListeners()) {
1132				switchToForeground();
1133			}
1134			this.mOnConversationUpdate = listener;
1135			this.mNotificationService.setIsInForeground(true);
1136			if (this.convChangedListenerCount < 2) {
1137				this.convChangedListenerCount++;
1138			}
1139		}
1140	}
1141
1142	public void removeOnConversationListChangedListener() {
1143		synchronized (this) {
1144			this.convChangedListenerCount--;
1145			if (this.convChangedListenerCount <= 0) {
1146				this.convChangedListenerCount = 0;
1147				this.mOnConversationUpdate = null;
1148				this.mNotificationService.setIsInForeground(false);
1149				if (checkListeners()) {
1150					switchToBackground();
1151				}
1152			}
1153		}
1154	}
1155
1156	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1157		synchronized (this) {
1158			if (checkListeners()) {
1159				switchToForeground();
1160			}
1161			this.mOnAccountUpdate = listener;
1162			if (this.accountChangedListenerCount < 2) {
1163				this.accountChangedListenerCount++;
1164			}
1165		}
1166	}
1167
1168	public void removeOnAccountListChangedListener() {
1169		synchronized (this) {
1170			this.accountChangedListenerCount--;
1171			if (this.accountChangedListenerCount <= 0) {
1172				this.mOnAccountUpdate = null;
1173				this.accountChangedListenerCount = 0;
1174				if (checkListeners()) {
1175					switchToBackground();
1176				}
1177			}
1178		}
1179	}
1180
1181	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1182		synchronized (this) {
1183			if (checkListeners()) {
1184				switchToForeground();
1185			}
1186			this.mOnRosterUpdate = listener;
1187			if (this.rosterChangedListenerCount < 2) {
1188				this.rosterChangedListenerCount++;
1189			}
1190		}
1191	}
1192
1193	public void removeOnRosterUpdateListener() {
1194		synchronized (this) {
1195			this.rosterChangedListenerCount--;
1196			if (this.rosterChangedListenerCount <= 0) {
1197				this.rosterChangedListenerCount = 0;
1198				this.mOnRosterUpdate = null;
1199				if (checkListeners()) {
1200					switchToBackground();
1201				}
1202			}
1203		}
1204	}
1205
1206	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1207		synchronized (this) {
1208			if (checkListeners()) {
1209				switchToForeground();
1210			}
1211			this.mOnMucRosterUpdate = listener;
1212			if (this.mucRosterChangedListenerCount < 2) {
1213				this.mucRosterChangedListenerCount++;
1214			}
1215		}
1216	}
1217
1218	public void removeOnMucRosterUpdateListener() {
1219		synchronized (this) {
1220			this.mucRosterChangedListenerCount--;
1221			if (this.mucRosterChangedListenerCount <= 0) {
1222				this.mucRosterChangedListenerCount = 0;
1223				this.mOnMucRosterUpdate = null;
1224				if (checkListeners()) {
1225					switchToBackground();
1226				}
1227			}
1228		}
1229	}
1230
1231	private boolean checkListeners() {
1232		return (this.mOnAccountUpdate == null
1233				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1234	}
1235
1236	private void switchToForeground() {
1237		for (Account account : getAccounts()) {
1238			if (account.getStatus() == Account.State.ONLINE) {
1239				XmppConnection connection = account.getXmppConnection();
1240				if (connection != null && connection.getFeatures().csi()) {
1241					connection.sendActive();
1242				}
1243			}
1244		}
1245		Log.d(Config.LOGTAG, "app switched into foreground");
1246	}
1247
1248	private void switchToBackground() {
1249		for (Account account : getAccounts()) {
1250			if (account.getStatus() == Account.State.ONLINE) {
1251				XmppConnection connection = account.getXmppConnection();
1252				if (connection != null && connection.getFeatures().csi()) {
1253					connection.sendInactive();
1254				}
1255			}
1256		}
1257		this.mNotificationService.setIsInForeground(false);
1258		Log.d(Config.LOGTAG, "app switched into background");
1259	}
1260
1261	private void connectMultiModeConversations(Account account) {
1262		List<Conversation> conversations = getConversations();
1263		for (Conversation conversation : conversations) {
1264			if ((conversation.getMode() == Conversation.MODE_MULTI)
1265					&& (conversation.getAccount() == account)) {
1266				conversation.resetMucOptions();
1267				joinMuc(conversation);
1268			}
1269		}
1270	}
1271
1272	public void joinMuc(Conversation conversation) {
1273		Account account = conversation.getAccount();
1274		account.pendingConferenceJoins.remove(conversation);
1275		account.pendingConferenceLeaves.remove(conversation);
1276		if (account.getStatus() == Account.State.ONLINE) {
1277			final String nick = conversation.getMucOptions().getProposedNick();
1278			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1279			if (joinJid == null) {
1280				return; //safety net
1281			}
1282			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1283			PresencePacket packet = new PresencePacket();
1284			packet.setFrom(conversation.getAccount().getJid());
1285			packet.setTo(joinJid);
1286			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1287			if (conversation.getMucOptions().getPassword() != null) {
1288				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1289			}
1290			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1291			String sig = account.getPgpSignature();
1292			if (sig != null) {
1293				packet.addChild("status").setContent("online");
1294				packet.addChild("x", "jabber:x:signed").setContent(sig);
1295			}
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		final Account account = conversation.getAccount();
1553		final Session otrSession = conversation.getOtrSession();
1554		Log.d(Config.LOGTAG,
1555				account.getJid().toBareJid() + " otr session established with "
1556						+ conversation.getContactJid() + "/"
1557						+ otrSession.getSessionID().getUserID());
1558		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1559
1560			@Override
1561			public void onMessageFound(Message message) {
1562				SessionID id = otrSession.getSessionID();
1563				try {
1564					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1565				} catch (InvalidJidException e) {
1566					return;
1567				}
1568				if (message.getType() == Message.TYPE_TEXT) {
1569					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1570					if (outPacket != null) {
1571						message.setStatus(Message.STATUS_SEND);
1572						databaseBackend.updateMessage(message);
1573						sendMessagePacket(account, outPacket);
1574					}
1575				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1576					mJingleConnectionManager.createNewConnection(message);
1577				}
1578				updateConversationUi();
1579			}
1580		});
1581	}
1582
1583	public boolean renewSymmetricKey(Conversation conversation) {
1584		Account account = conversation.getAccount();
1585		byte[] symmetricKey = new byte[32];
1586		this.mRandom.nextBytes(symmetricKey);
1587		Session otrSession = conversation.getOtrSession();
1588		if (otrSession != null) {
1589			MessagePacket packet = new MessagePacket();
1590			packet.setType(MessagePacket.TYPE_CHAT);
1591			packet.setFrom(account.getJid());
1592			packet.addChild("private", "urn:xmpp:carbons:2");
1593			packet.addChild("no-copy", "urn:xmpp:hints");
1594			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1595					+ otrSession.getSessionID().getUserID());
1596			try {
1597				packet.setBody(otrSession
1598						.transformSending(CryptoHelper.FILETRANSFER
1599							+ CryptoHelper.bytesToHex(symmetricKey)));
1600				sendMessagePacket(account, packet);
1601				conversation.setSymmetricKey(symmetricKey);
1602				return true;
1603			} catch (OtrException e) {
1604				return false;
1605			}
1606		}
1607		return false;
1608	}
1609
1610	public void pushContactToServer(Contact contact) {
1611		contact.resetOption(Contact.Options.DIRTY_DELETE);
1612		contact.setOption(Contact.Options.DIRTY_PUSH);
1613		Account account = contact.getAccount();
1614		if (account.getStatus() == Account.State.ONLINE) {
1615			boolean ask = contact.getOption(Contact.Options.ASKING);
1616			boolean sendUpdates = contact
1617				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1618				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1619			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1620			iq.query("jabber:iq:roster").addChild(contact.asElement());
1621			account.getXmppConnection().sendIqPacket(iq, null);
1622			if (sendUpdates) {
1623				sendPresencePacket(account,
1624						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1625			}
1626			if (ask) {
1627				sendPresencePacket(account,
1628						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1629			}
1630		}
1631	}
1632
1633	public void publishAvatar(Account account, Uri image,
1634			final UiCallback<Avatar> callback) {
1635		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1636		final int size = Config.AVATAR_SIZE;
1637		final Avatar avatar = getFileBackend()
1638			.getPepAvatar(image, size, format);
1639		if (avatar != null) {
1640			avatar.height = size;
1641			avatar.width = size;
1642			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1643				avatar.type = "image/webp";
1644			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1645				avatar.type = "image/jpeg";
1646			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1647				avatar.type = "image/png";
1648			}
1649			if (!getFileBackend().save(avatar)) {
1650				callback.error(R.string.error_saving_avatar, avatar);
1651				return;
1652			}
1653			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1654			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1655
1656				@Override
1657				public void onIqPacketReceived(Account account, IqPacket result) {
1658					if (result.getType() == IqPacket.TYPE_RESULT) {
1659						IqPacket packet = XmppConnectionService.this.mIqGenerator
1660							.publishAvatarMetadata(avatar);
1661						sendIqPacket(account, packet, new OnIqPacketReceived() {
1662
1663							@Override
1664							public void onIqPacketReceived(Account account,
1665									IqPacket result) {
1666								if (result.getType() == IqPacket.TYPE_RESULT) {
1667									if (account.setAvatar(avatar.getFilename())) {
1668										databaseBackend.updateAccount(account);
1669									}
1670									callback.success(avatar);
1671								} else {
1672									callback.error(
1673											R.string.error_publish_avatar_server_reject,
1674											avatar);
1675								}
1676							}
1677						});
1678					} else {
1679						callback.error(
1680								R.string.error_publish_avatar_server_reject,
1681								avatar);
1682					}
1683				}
1684			});
1685		} else {
1686			callback.error(R.string.error_publish_avatar_converting, null);
1687		}
1688	}
1689
1690	public void fetchAvatar(Account account, Avatar avatar) {
1691		fetchAvatar(account, avatar, null);
1692	}
1693
1694	public void fetchAvatar(Account account, final Avatar avatar,
1695			final UiCallback<Avatar> callback) {
1696		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1697		sendIqPacket(account, packet, new OnIqPacketReceived() {
1698
1699			@Override
1700			public void onIqPacketReceived(Account account, IqPacket result) {
1701				final String ERROR = account.getJid().toBareJid()
1702						+ ": fetching avatar for " + avatar.owner + " failed ";
1703				if (result.getType() == IqPacket.TYPE_RESULT) {
1704					avatar.image = mIqParser.avatarData(result);
1705					if (avatar.image != null) {
1706						if (getFileBackend().save(avatar)) {
1707							if (account.getJid().toBareJid().equals(avatar.owner)) {
1708								if (account.setAvatar(avatar.getFilename())) {
1709									databaseBackend.updateAccount(account);
1710								}
1711								getAvatarService().clear(account);
1712								updateConversationUi();
1713								updateAccountUi();
1714							} else {
1715								Contact contact = account.getRoster()
1716										.getContact(avatar.owner);
1717								contact.setAvatar(avatar.getFilename());
1718								getAvatarService().clear(contact);
1719								updateConversationUi();
1720								updateRosterUi();
1721							}
1722							if (callback != null) {
1723								callback.success(avatar);
1724							}
1725							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1726									+ ": succesfully fetched avatar for "
1727									+ avatar.owner);
1728							return;
1729						}
1730					} else {
1731
1732						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1733					}
1734				} else {
1735					Element error = result.findChild("error");
1736					if (error == null) {
1737						Log.d(Config.LOGTAG, ERROR + "(server error)");
1738					} else {
1739						Log.d(Config.LOGTAG, ERROR + error.toString());
1740					}
1741				}
1742				if (callback != null) {
1743					callback.error(0, null);
1744				}
1745
1746			}
1747		});
1748	}
1749
1750	public void checkForAvatar(Account account,
1751			final UiCallback<Avatar> callback) {
1752		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1753		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1754
1755			@Override
1756			public void onIqPacketReceived(Account account, IqPacket packet) {
1757				if (packet.getType() == IqPacket.TYPE_RESULT) {
1758					Element pubsub = packet.findChild("pubsub",
1759							"http://jabber.org/protocol/pubsub");
1760					if (pubsub != null) {
1761						Element items = pubsub.findChild("items");
1762						if (items != null) {
1763							Avatar avatar = Avatar.parseMetadata(items);
1764							if (avatar != null) {
1765								avatar.owner = account.getJid().toBareJid();
1766								if (fileBackend.isAvatarCached(avatar)) {
1767									if (account.setAvatar(avatar.getFilename())) {
1768										databaseBackend.updateAccount(account);
1769									}
1770									getAvatarService().clear(account);
1771									callback.success(avatar);
1772								} else {
1773									fetchAvatar(account, avatar, callback);
1774								}
1775								return;
1776							}
1777						}
1778					}
1779				}
1780				callback.error(0, null);
1781			}
1782		});
1783	}
1784
1785	public void deleteContactOnServer(Contact contact) {
1786		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1787		contact.resetOption(Contact.Options.DIRTY_PUSH);
1788		contact.setOption(Contact.Options.DIRTY_DELETE);
1789		Account account = contact.getAccount();
1790		if (account.getStatus() == Account.State.ONLINE) {
1791			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1792			Element item = iq.query("jabber:iq:roster").addChild("item");
1793			item.setAttribute("jid", contact.getJid().toString());
1794			item.setAttribute("subscription", "remove");
1795			account.getXmppConnection().sendIqPacket(iq, null);
1796		}
1797	}
1798
1799	public void updateConversation(Conversation conversation) {
1800		this.databaseBackend.updateConversation(conversation);
1801	}
1802
1803	public void reconnectAccount(final Account account, final boolean force) {
1804		new Thread(new Runnable() {
1805
1806			@Override
1807			public void run() {
1808				if (account.getXmppConnection() != null) {
1809					disconnect(account, force);
1810				}
1811				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1812					if (account.getXmppConnection() == null) {
1813						account.setXmppConnection(createConnection(account));
1814					}
1815					Thread thread = new Thread(account.getXmppConnection());
1816					thread.start();
1817					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1818							false);
1819				} else {
1820					account.getRoster().clearPresences();
1821					account.setXmppConnection(null);
1822				}
1823			}
1824		}).start();
1825	}
1826
1827	public void invite(Conversation conversation, Jid contact) {
1828		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1829		sendMessagePacket(conversation.getAccount(), packet);
1830	}
1831
1832	public void resetSendingToWaiting(Account account) {
1833		for (Conversation conversation : getConversations()) {
1834			if (conversation.getAccount() == account) {
1835				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1836
1837					@Override
1838					public void onMessageFound(Message message) {
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			Message message = conversation.findSentMessageWithUuid(uuid);
1867			if (message!=null) {
1868				markMessage(message,status);
1869				return true;
1870			} else {
1871				return false;
1872			}
1873		}
1874	}
1875
1876	public void markMessage(Message message, int status) {
1877		if (status == Message.STATUS_SEND_FAILED
1878				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1879					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1880			return;
1881					}
1882		message.setStatus(status);
1883		databaseBackend.updateMessage(message);
1884		updateConversationUi();
1885	}
1886
1887	public SharedPreferences getPreferences() {
1888		return PreferenceManager
1889			.getDefaultSharedPreferences(getApplicationContext());
1890	}
1891
1892	public boolean forceEncryption() {
1893		return getPreferences().getBoolean("force_encryption", false);
1894	}
1895
1896	public boolean confirmMessages() {
1897		return getPreferences().getBoolean("confirm_messages", true);
1898	}
1899
1900	public boolean saveEncryptedMessages() {
1901		return !getPreferences().getBoolean("dont_save_encrypted", false);
1902	}
1903
1904	public boolean indicateReceived() {
1905		return getPreferences().getBoolean("indicate_received", false);
1906	}
1907
1908	public void updateConversationUi() {
1909		if (mOnConversationUpdate != null) {
1910			mOnConversationUpdate.onConversationUpdate();
1911		}
1912	}
1913
1914	public void updateAccountUi() {
1915		if (mOnAccountUpdate != null) {
1916			mOnAccountUpdate.onAccountUpdate();
1917		}
1918	}
1919
1920	public void updateRosterUi() {
1921		if (mOnRosterUpdate != null) {
1922			mOnRosterUpdate.onRosterUpdate();
1923		}
1924	}
1925
1926	public void updateMucRosterUi() {
1927		if (mOnMucRosterUpdate != null) {
1928			mOnMucRosterUpdate.onMucRosterUpdate();
1929		}
1930	}
1931
1932	public Account findAccountByJid(final Jid accountJid) {
1933		for (Account account : this.accounts) {
1934			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1935				return account;
1936			}
1937		}
1938		return null;
1939	}
1940
1941	public Conversation findConversationByUuid(String uuid) {
1942		for (Conversation conversation : getConversations()) {
1943			if (conversation.getUuid().equals(uuid)) {
1944				return conversation;
1945			}
1946		}
1947		return null;
1948	}
1949
1950	public void markRead(Conversation conversation, boolean calledByUi) {
1951		mNotificationService.clear(conversation);
1952		final Message markable = conversation.getLatestMarkableMessage();
1953		conversation.markRead();
1954		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1955			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1956			Account account = conversation.getAccount();
1957			final Jid to = markable.getCounterpart();
1958			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1959			this.sendMessagePacket(conversation.getAccount(),packet);
1960		}
1961		if (!calledByUi) {
1962			updateConversationUi();
1963		}
1964	}
1965
1966	public SecureRandom getRNG() {
1967		return this.mRandom;
1968	}
1969
1970	public MemorizingTrustManager getMemorizingTrustManager() {
1971		return this.mMemorizingTrustManager;
1972	}
1973
1974	public PowerManager getPowerManager() {
1975		return this.pm;
1976	}
1977
1978	public LruCache<String, Bitmap> getBitmapCache() {
1979		return this.mBitmapCache;
1980	}
1981
1982	public void syncRosterToDisk(final Account account) {
1983		new Thread(new Runnable() {
1984
1985			@Override
1986			public void run() {
1987				databaseBackend.writeRoster(account.getRoster());
1988			}
1989		}).start();
1990
1991	}
1992
1993	public List<String> getKnownHosts() {
1994		List<String> hosts = new ArrayList<>();
1995		for (Account account : getAccounts()) {
1996			if (!hosts.contains(account.getServer().toString())) {
1997				hosts.add(account.getServer().toString());
1998			}
1999			for (Contact contact : account.getRoster().getContacts()) {
2000				if (contact.showInRoster()) {
2001					final String server = contact.getServer().toString();
2002					if (server != null && !hosts.contains(server)) {
2003						hosts.add(server);
2004					}
2005				}
2006			}
2007		}
2008		return hosts;
2009	}
2010
2011	public List<String> getKnownConferenceHosts() {
2012		ArrayList<String> mucServers = new ArrayList<>();
2013		for (Account account : accounts) {
2014			if (account.getXmppConnection() != null) {
2015				String server = account.getXmppConnection().getMucServer();
2016				if (server != null && !mucServers.contains(server)) {
2017					mucServers.add(server);
2018				}
2019			}
2020		}
2021		return mucServers;
2022	}
2023
2024	public void sendMessagePacket(Account account, MessagePacket packet) {
2025		XmppConnection connection = account.getXmppConnection();
2026		if (connection != null) {
2027			connection.sendMessagePacket(packet);
2028		}
2029	}
2030
2031	public void sendPresencePacket(Account account, PresencePacket packet) {
2032		XmppConnection connection = account.getXmppConnection();
2033		if (connection != null) {
2034			connection.sendPresencePacket(packet);
2035		}
2036	}
2037
2038	public void sendIqPacket(Account account, IqPacket packet,
2039			OnIqPacketReceived callback) {
2040		XmppConnection connection = account.getXmppConnection();
2041		if (connection != null) {
2042			connection.sendIqPacket(packet, callback);
2043		}
2044	}
2045
2046	public MessageGenerator getMessageGenerator() {
2047		return this.mMessageGenerator;
2048	}
2049
2050	public PresenceGenerator getPresenceGenerator() {
2051		return this.mPresenceGenerator;
2052	}
2053
2054	public IqGenerator getIqGenerator() {
2055		return this.mIqGenerator;
2056	}
2057
2058	public JingleConnectionManager getJingleConnectionManager() {
2059		return this.mJingleConnectionManager;
2060	}
2061
2062	public MessageArchiveService getMessageArchiveService() {
2063		return this.mMessageArchiveService;
2064	}
2065
2066	public List<Contact> findContacts(Jid jid) {
2067		ArrayList<Contact> contacts = new ArrayList<>();
2068		for (Account account : getAccounts()) {
2069			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2070				Contact contact = account.getRoster().getContactFromRoster(jid);
2071				if (contact != null) {
2072					contacts.add(contact);
2073				}
2074			}
2075		}
2076		return contacts;
2077	}
2078
2079	public NotificationService getNotificationService() {
2080		return this.mNotificationService;
2081	}
2082
2083	public HttpConnectionManager getHttpConnectionManager() {
2084		return this.mHttpConnectionManager;
2085	}
2086
2087	public void resendFailedMessages(Message message) {
2088		List<Message> messages = new ArrayList<>();
2089		Message current = message;
2090		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2091			messages.add(current);
2092			if (current.mergeable(current.next())) {
2093				current = current.next();
2094			} else {
2095				break;
2096			}
2097		}
2098		for (Message msg : messages) {
2099			markMessage(msg, Message.STATUS_WAITING);
2100			this.resendMessage(msg);
2101		}
2102	}
2103
2104	public void clearConversationHistory(final Conversation conversation) {
2105		conversation.clearMessages();
2106		new Thread(new Runnable() {
2107			@Override
2108			public void run() {
2109				databaseBackend.deleteMessagesInConversation(conversation);
2110			}
2111		}).start();
2112	}
2113
2114	public interface OnConversationUpdate {
2115		public void onConversationUpdate();
2116	}
2117
2118	public interface OnAccountUpdate {
2119		public void onAccountUpdate();
2120	}
2121
2122	public interface OnRosterUpdate {
2123		public void onRosterUpdate();
2124	}
2125
2126	public interface OnMucRosterUpdate {
2127		public void onMucRosterUpdate();
2128	}
2129
2130	private interface OnConferenceOptionsPushed {
2131		public void onPushSucceeded();
2132		public void onPushFailed();
2133	}
2134
2135	public class XmppConnectionBinder extends Binder {
2136		public XmppConnectionService getService() {
2137			return XmppConnectionService.this;
2138		}
2139	}
2140}