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.pendingConferenceJoins.clear();
 245			account.pendingConferenceLeaves.clear();
 246			fetchRosterFromServer(account);
 247			fetchBookmarks(account);
 248			sendPresencePacket(account,mPresenceGenerator.sendPresence(account));
 249			connectMultiModeConversations(account);
 250			updateConversationUi();
 251		}
 252	};
 253
 254	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 255
 256		@Override
 257		public void onMessageAcknowledged(Account account, String uuid) {
 258			for (final Conversation conversation : getConversations()) {
 259				if (conversation.getAccount() == account) {
 260					Message message = conversation.findUnsentMessageWithUuid(uuid);
 261					if (message != null) {
 262						markMessage(message, Message.STATUS_SEND);
 263						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 264							databaseBackend.updateConversation(conversation);
 265						}
 266					}
 267				}
 268			}
 269		}
 270	};
 271	private LruCache<String, Bitmap> mBitmapCache;
 272	private IqGenerator mIqGenerator = new IqGenerator(this);
 273	private Thread mPhoneContactMergerThread;
 274
 275	public PgpEngine getPgpEngine() {
 276		if (pgpServiceConnection.isBound()) {
 277			if (this.mPgpEngine == null) {
 278				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 279							getApplicationContext(),
 280							pgpServiceConnection.getService()), this);
 281			}
 282			return mPgpEngine;
 283		} else {
 284			return null;
 285		}
 286
 287	}
 288
 289	public FileBackend getFileBackend() {
 290		return this.fileBackend;
 291	}
 292
 293	public AvatarService getAvatarService() {
 294		return this.mAvatarService;
 295	}
 296
 297	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 298		final Message message;
 299		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 300			message = new Message(conversation, "",
 301					Message.ENCRYPTION_DECRYPTED);
 302		} else {
 303			message = new Message(conversation, "",
 304					conversation.getNextEncryption(forceEncryption()));
 305		}
 306		message.setCounterpart(conversation.getNextCounterpart());
 307		message.setType(Message.TYPE_FILE);
 308		message.setStatus(Message.STATUS_OFFERED);
 309		String path = getFileBackend().getOriginalPath(uri);
 310		if (path!=null) {
 311			message.setRelativeFilePath(path);
 312			getFileBackend().updateFileParams(message);
 313			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 314				getPgpEngine().encrypt(message, callback);
 315			} else {
 316				callback.success(message);
 317			}
 318		} else {
 319			new Thread(new Runnable() {
 320				@Override
 321				public void run() {
 322					try {
 323						getFileBackend().copyFileToPrivateStorage(message, uri);
 324						getFileBackend().updateFileParams(message);
 325						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 326							getPgpEngine().encrypt(message, callback);
 327						} else {
 328							callback.success(message);
 329						}
 330					} catch (FileBackend.FileCopyException e) {
 331						callback.error(e.getResId(),message);
 332					}
 333				}
 334			}).start();
 335
 336		}
 337	}
 338
 339	public void attachImageToConversation(final Conversation conversation,
 340			final Uri uri, final UiCallback<Message> callback) {
 341		final Message message;
 342		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 343			message = new Message(conversation, "",
 344					Message.ENCRYPTION_DECRYPTED);
 345		} else {
 346			message = new Message(conversation, "",
 347					conversation.getNextEncryption(forceEncryption()));
 348		}
 349		message.setCounterpart(conversation.getNextCounterpart());
 350		message.setType(Message.TYPE_IMAGE);
 351		message.setStatus(Message.STATUS_OFFERED);
 352		new Thread(new Runnable() {
 353
 354			@Override
 355			public void run() {
 356				try {
 357					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 358					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 359						getPgpEngine().encrypt(message, callback);
 360					} else {
 361						callback.success(message);
 362					}
 363				} catch (FileBackend.FileCopyException e) {
 364					callback.error(e.getResId(), message);
 365				}
 366			}
 367		}).start();
 368	}
 369
 370	public Conversation find(Bookmark bookmark) {
 371		return find(bookmark.getAccount(), bookmark.getJid());
 372	}
 373
 374	public Conversation find(final Account account, final Jid jid) {
 375		return find(getConversations(), account, jid);
 376	}
 377
 378	@Override
 379	public int onStartCommand(Intent intent, int flags, int startId) {
 380		if (intent != null && intent.getAction() != null) {
 381			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 382				PhoneHelper.loadPhoneContacts(getApplicationContext(), new ArrayList<Bundle>(), this);
 383				return START_STICKY;
 384			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 385				logoutAndSave();
 386				return START_NOT_STICKY;
 387			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 388				mNotificationService.clear();
 389			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 390				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 391				toggleForegroundService();
 392			}
 393		}
 394		this.wakeLock.acquire();
 395
 396		for (Account account : accounts) {
 397			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 398				if (!hasInternetConnection()) {
 399					account.setStatus(Account.State.NO_INTERNET);
 400					if (statusListener != null) {
 401						statusListener.onStatusChanged(account);
 402					}
 403				} else {
 404					if (account.getStatus() == Account.State.NO_INTERNET) {
 405						account.setStatus(Account.State.OFFLINE);
 406						if (statusListener != null) {
 407							statusListener.onStatusChanged(account);
 408						}
 409					}
 410					if (account.getStatus() == Account.State.ONLINE) {
 411						long lastReceived = account.getXmppConnection()
 412							.getLastPacketReceived();
 413						long lastSent = account.getXmppConnection()
 414							.getLastPingSent();
 415						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 416							Log.d(Config.LOGTAG, account.getJid()
 417									+ ": ping timeout");
 418							this.reconnectAccount(account, true);
 419						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 420							account.getXmppConnection().sendPing();
 421							this.scheduleWakeupCall(2, false);
 422						}
 423					} else if (account.getStatus() == Account.State.OFFLINE) {
 424						if (account.getXmppConnection() == null) {
 425							account.setXmppConnection(this
 426									.createConnection(account));
 427						}
 428						new Thread(account.getXmppConnection()).start();
 429					} else if ((account.getStatus() == Account.State.CONNECTING)
 430							&& ((SystemClock.elapsedRealtime() - account
 431									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 432						Log.d(Config.LOGTAG, account.getJid()
 433								+ ": time out during connect reconnecting");
 434						reconnectAccount(account, true);
 435					} else {
 436						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 437							reconnectAccount(account, true);
 438						}
 439					}
 440					// in any case. reschedule wakup call
 441					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 442				}
 443				if (mOnAccountUpdate != null) {
 444					mOnAccountUpdate.onAccountUpdate();
 445				}
 446			}
 447		}
 448		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 449			if (!pm.isScreenOn()) {
 450			removeStaleListeners();
 451			}*/
 452		if (wakeLock.isHeld()) {
 453			try {
 454				wakeLock.release();
 455			} catch (final RuntimeException ignored) {
 456			}
 457		}
 458		return START_STICKY;
 459	}
 460
 461	public boolean hasInternetConnection() {
 462		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 463			.getSystemService(Context.CONNECTIVITY_SERVICE);
 464		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 465		return activeNetwork != null && activeNetwork.isConnected();
 466	}
 467
 468	@SuppressLint("TrulyRandom")
 469	@Override
 470	public void onCreate() {
 471		ExceptionHelper.init(getApplicationContext());
 472		PRNGFixes.apply();
 473		this.mRandom = new SecureRandom();
 474		this.mMemorizingTrustManager = new MemorizingTrustManager(
 475				getApplicationContext());
 476
 477		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 478		int cacheSize = maxMemory / 8;
 479		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 480			@Override
 481			protected int sizeOf(String key, Bitmap bitmap) {
 482				return bitmap.getByteCount() / 1024;
 483			}
 484		};
 485
 486		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 487		this.accounts = databaseBackend.getAccounts();
 488
 489		for (Account account : this.accounts) {
 490			account.initOtrEngine(this);
 491			this.databaseBackend.readRoster(account.getRoster());
 492		}
 493		initConversations();
 494		PhoneHelper.loadPhoneContacts(getApplicationContext(),new ArrayList<Bundle>(), this);
 495
 496		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 497		this.fileObserver.startWatching();
 498		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 499		this.pgpServiceConnection.bindToService();
 500
 501		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 502		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 503		toggleForegroundService();
 504	}
 505
 506	public void toggleForegroundService() {
 507		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 508			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 509		} else {
 510			stopForeground(true);
 511		}
 512	}
 513
 514	@Override
 515	public void onTaskRemoved(Intent rootIntent) {
 516		super.onTaskRemoved(rootIntent);
 517		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 518			this.logoutAndSave();
 519		}
 520	}
 521
 522	private void logoutAndSave() {
 523		for (Account account : accounts) {
 524			databaseBackend.writeRoster(account.getRoster());
 525			if (account.getXmppConnection() != null) {
 526				disconnect(account, false);
 527			}
 528		}
 529		Context context = getApplicationContext();
 530		AlarmManager alarmManager = (AlarmManager) context
 531			.getSystemService(Context.ALARM_SERVICE);
 532		Intent intent = new Intent(context, EventReceiver.class);
 533		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 534		Log.d(Config.LOGTAG, "good bye");
 535		stopSelf();
 536	}
 537
 538	protected void scheduleWakeupCall(int seconds, boolean ping) {
 539		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 540		Context context = getApplicationContext();
 541		AlarmManager alarmManager = (AlarmManager) context
 542			.getSystemService(Context.ALARM_SERVICE);
 543
 544		if (ping) {
 545			if (this.pingIntent == null) {
 546				this.pingIntent = new Intent(context, EventReceiver.class);
 547				this.pingIntent.setAction("ping");
 548				this.pingIntent.putExtra("time", timeToWake);
 549				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 550						this.pingIntent, 0);
 551				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 552						timeToWake, pendingPingIntent);
 553			} else {
 554				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 555				if (scheduledTime < SystemClock.elapsedRealtime()
 556						|| (scheduledTime > timeToWake)) {
 557					this.pingIntent.putExtra("time", timeToWake);
 558					alarmManager.cancel(this.pendingPingIntent);
 559					this.pendingPingIntent = PendingIntent.getBroadcast(
 560							context, 0, this.pingIntent, 0);
 561					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 562							timeToWake, pendingPingIntent);
 563						}
 564			}
 565		} else {
 566			Intent intent = new Intent(context, EventReceiver.class);
 567			intent.setAction("ping_check");
 568			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 569					intent, 0);
 570			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 571					alarmIntent);
 572		}
 573
 574	}
 575
 576	public XmppConnection createConnection(Account account) {
 577		SharedPreferences sharedPref = getPreferences();
 578		account.setResource(sharedPref.getString("resource", "mobile")
 579				.toLowerCase(Locale.getDefault()));
 580		XmppConnection connection = new XmppConnection(account, this);
 581		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 582		connection.setOnStatusChangedListener(this.statusListener);
 583		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 584		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 585		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 586		connection.setOnBindListener(this.mOnBindListener);
 587		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 588		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 589		return connection;
 590	}
 591
 592	public void sendMessage(Message message) {
 593		Account account = message.getConversation().getAccount();
 594		account.deactivateGracePeriod();
 595		Conversation conv = message.getConversation();
 596		MessagePacket packet = null;
 597		boolean saveInDb = true;
 598		boolean send = false;
 599		if (account.getStatus() == Account.State.ONLINE
 600				&& account.getXmppConnection() != null) {
 601			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 602				if (message.getCounterpart() != null) {
 603					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 604						if (!conv.hasValidOtrSession()) {
 605							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 606							message.setStatus(Message.STATUS_WAITING);
 607						} else if (conv.hasValidOtrSession()
 608								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 609							mJingleConnectionManager
 610								.createNewConnection(message);
 611								}
 612					} else {
 613						mJingleConnectionManager.createNewConnection(message);
 614					}
 615				} else {
 616					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 617						conv.startOtrIfNeeded();
 618					}
 619					message.setStatus(Message.STATUS_WAITING);
 620				}
 621			} else {
 622				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 623					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 624						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 625						message.setStatus(Message.STATUS_WAITING);
 626					} else if (conv.hasValidOtrSession()) {
 627						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 628							packet = mMessageGenerator.generateOtrChat(message);
 629							send = true;
 630						} else {
 631							message.setStatus(Message.STATUS_WAITING);
 632							conv.startOtrIfNeeded();
 633						}
 634					} else {
 635						message.setStatus(Message.STATUS_WAITING);
 636					}
 637				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 638					message.getConversation().endOtrIfNeeded();
 639					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 640						@Override
 641						public void onMessageFound(Message message) {
 642							markMessage(message,Message.STATUS_SEND_FAILED);
 643						}
 644					});
 645					packet = mMessageGenerator.generatePgpChat(message);
 646					send = true;
 647				} else {
 648					message.getConversation().endOtrIfNeeded();
 649					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 650						@Override
 651						public void onMessageFound(Message message) {
 652							markMessage(message,Message.STATUS_SEND_FAILED);
 653						}
 654					});
 655					packet = mMessageGenerator.generateChat(message);
 656					send = true;
 657				}
 658			}
 659			if (!account.getXmppConnection().getFeatures().sm()
 660					&& conv.getMode() != Conversation.MODE_MULTI) {
 661				message.setStatus(Message.STATUS_SEND);
 662					}
 663		} else {
 664			message.setStatus(Message.STATUS_WAITING);
 665			if (message.getType() == Message.TYPE_TEXT) {
 666				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 667					String pgpBody = message.getEncryptedBody();
 668					String decryptedBody = message.getBody();
 669					message.setBody(pgpBody);
 670					message.setEncryption(Message.ENCRYPTION_PGP);
 671					databaseBackend.createMessage(message);
 672					saveInDb = false;
 673					message.setBody(decryptedBody);
 674					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 675				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 676					if (!conv.hasValidOtrSession()
 677							&& message.getCounterpart() != null) {
 678						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 679							}
 680				}
 681			}
 682
 683		}
 684		conv.add(message);
 685		if (saveInDb) {
 686			if (message.getEncryption() == Message.ENCRYPTION_NONE
 687					|| saveEncryptedMessages()) {
 688				databaseBackend.createMessage(message);
 689					}
 690		}
 691		if ((send) && (packet != null)) {
 692			sendMessagePacket(account, packet);
 693		}
 694		updateConversationUi();
 695	}
 696
 697	private void sendUnsentMessages(Conversation conversation) {
 698		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 699
 700			@Override
 701			public void onMessageFound(Message message) {
 702				resendMessage(message);
 703			}
 704		});
 705	}
 706
 707	private void resendMessage(Message message) {
 708		Account account = message.getConversation().getAccount();
 709		MessagePacket packet = null;
 710		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 711			Presences presences = message.getConversation().getContact()
 712				.getPresences();
 713			if (!message.getConversation().hasValidOtrSession()) {
 714				if ((message.getCounterpart() != null)
 715						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 716					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 717				} else {
 718					if (presences.size() == 1) {
 719						String presence = presences.asStringArray()[0];
 720						message.getConversation().startOtrSession(presence, true);
 721					}
 722				}
 723			} else {
 724				if (message.getConversation().getOtrSession()
 725						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 726					try {
 727						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 728						if (message.getType() == Message.TYPE_TEXT) {
 729							packet = mMessageGenerator.generateOtrChat(message,
 730									true);
 731						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 732							mJingleConnectionManager.createNewConnection(message);
 733						}
 734					} catch (InvalidJidException e) {
 735
 736					}
 737						}
 738			}
 739		} else if (message.getType() == Message.TYPE_TEXT) {
 740			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 741				packet = mMessageGenerator.generateChat(message, true);
 742			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 743					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 744				packet = mMessageGenerator.generatePgpChat(message, true);
 745					}
 746		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 747			Contact contact = message.getConversation().getContact();
 748			Presences presences = contact.getPresences();
 749			if ((message.getCounterpart() != null)
 750					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 751				markMessage(message, Message.STATUS_OFFERED);
 752				mJingleConnectionManager.createNewConnection(message);
 753			} else {
 754				if (presences.size() == 1) {
 755					String presence = presences.asStringArray()[0];
 756					try {
 757						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 758					} catch (InvalidJidException e) {
 759						return;
 760					}
 761					markMessage(message, Message.STATUS_OFFERED);
 762					mJingleConnectionManager.createNewConnection(message);
 763				}
 764			}
 765		}
 766		if (packet != null) {
 767			if (!account.getXmppConnection().getFeatures().sm()
 768					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 769				markMessage(message, Message.STATUS_SEND);
 770			} else {
 771				markMessage(message, Message.STATUS_UNSEND);
 772			}
 773			sendMessagePacket(account, packet);
 774		}
 775	}
 776
 777	public void fetchRosterFromServer(Account account) {
 778		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 779		if (!"".equals(account.getRosterVersion())) {
 780			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 781					+ ": fetching roster version " + account.getRosterVersion());
 782		} else {
 783			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 784		}
 785		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 786				account.getRosterVersion());
 787		account.getXmppConnection().sendIqPacket(iqPacket,
 788				new OnIqPacketReceived() {
 789
 790					@Override
 791					public void onIqPacketReceived(final Account account,
 792												   IqPacket packet) {
 793						Element query = packet.findChild("query");
 794						if (query != null) {
 795							account.getRoster().markAllAsNotInRoster();
 796							mIqParser.rosterItems(account, query);
 797						}
 798					}
 799				});
 800	}
 801
 802	public void fetchBookmarks(Account account) {
 803		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 804		Element query = iqPacket.query("jabber:iq:private");
 805		query.addChild("storage", "storage:bookmarks");
 806		OnIqPacketReceived callback = new OnIqPacketReceived() {
 807
 808			@Override
 809			public void onIqPacketReceived(Account account, IqPacket packet) {
 810				Element query = packet.query();
 811				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 812				Element storage = query.findChild("storage",
 813						"storage:bookmarks");
 814				if (storage != null) {
 815					for (Element item : storage.getChildren()) {
 816						if (item.getName().equals("conference")) {
 817							Bookmark bookmark = Bookmark.parse(item, account);
 818							bookmarks.add(bookmark);
 819							Conversation conversation = find(bookmark);
 820							if (conversation != null) {
 821								conversation.setBookmark(bookmark);
 822							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 823								conversation = findOrCreateConversation(
 824										account, bookmark.getJid(), true);
 825								conversation.setBookmark(bookmark);
 826								joinMuc(conversation);
 827							}
 828						}
 829					}
 830				}
 831				account.setBookmarks(bookmarks);
 832			}
 833		};
 834		sendIqPacket(account, iqPacket, callback);
 835
 836	}
 837
 838	public void pushBookmarks(Account account) {
 839		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 840		Element query = iqPacket.query("jabber:iq:private");
 841		Element storage = query.addChild("storage", "storage:bookmarks");
 842		for (Bookmark bookmark : account.getBookmarks()) {
 843			storage.addChild(bookmark);
 844		}
 845		sendIqPacket(account, iqPacket, null);
 846	}
 847
 848	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 849		if (mPhoneContactMergerThread != null) {
 850			mPhoneContactMergerThread.interrupt();
 851		}
 852		mPhoneContactMergerThread = new Thread(new Runnable() {
 853			@Override
 854			public void run() {
 855				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 856				for (Account account : accounts) {
 857					account.getRoster().clearSystemAccounts();
 858					for (Bundle phoneContact : phoneContacts) {
 859						if (Thread.interrupted()) {
 860							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 861							return;
 862						}
 863						Jid jid;
 864						try {
 865							jid = Jid.fromString(phoneContact.getString("jid"));
 866						} catch (final InvalidJidException e) {
 867							continue;
 868						}
 869						final Contact contact = account.getRoster().getContact(jid);
 870						String systemAccount = phoneContact.getInt("phoneid")
 871								+ "#"
 872								+ phoneContact.getString("lookup");
 873						contact.setSystemAccount(systemAccount);
 874						contact.setPhotoUri(phoneContact.getString("photouri"));
 875						getAvatarService().clear(contact);
 876						contact.setSystemName(phoneContact.getString("displayname"));
 877					}
 878				}
 879				Log.d(Config.LOGTAG,"finished merging phone contacts");
 880				updateAccountUi();
 881			}
 882		});
 883		mPhoneContactMergerThread.start();
 884	}
 885
 886	private void initConversations() {
 887		synchronized (this.conversations) {
 888			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 889			for (Account account : this.accounts) {
 890				accountLookupTable.put(account.getUuid(), account);
 891			}
 892			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 893			for (Conversation conversation : this.conversations) {
 894				Account account = accountLookupTable.get(conversation.getAccountUuid());
 895				conversation.setAccount(account);
 896				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 897				checkDeletedFiles(conversation);
 898			}
 899		}
 900	}
 901
 902	public List<Conversation> getConversations() {
 903		return this.conversations;
 904	}
 905
 906	private void checkDeletedFiles(Conversation conversation) {
 907		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 908
 909			@Override
 910			public void onMessageFound(Message message) {
 911				if (!getFileBackend().isFileAvailable(message)) {
 912					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 913				}
 914			}
 915		});
 916	}
 917
 918	private void markFileDeleted(String uuid) {
 919		for (Conversation conversation : getConversations()) {
 920			Message message = conversation.findMessageWithFileAndUuid(uuid);
 921			if (message != null) {
 922				if (!getFileBackend().isFileAvailable(message)) {
 923					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 924					updateConversationUi();
 925				}
 926				return;
 927			}
 928		}
 929	}
 930
 931	public void populateWithOrderedConversations(final List<Conversation> list) {
 932		populateWithOrderedConversations(list, true);
 933	}
 934
 935	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 936		list.clear();
 937		if (includeConferences) {
 938			list.addAll(getConversations());
 939		} else {
 940			for (Conversation conversation : getConversations()) {
 941				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 942					list.add(conversation);
 943				}
 944			}
 945		}
 946		Collections.sort(list, new Comparator<Conversation>() {
 947			@Override
 948			public int compare(Conversation lhs, Conversation rhs) {
 949				Message left = lhs.getLatestMessage();
 950				Message right = rhs.getLatestMessage();
 951				if (left.getTimeSent() > right.getTimeSent()) {
 952					return -1;
 953				} else if (left.getTimeSent() < right.getTimeSent()) {
 954					return 1;
 955				} else {
 956					return 0;
 957				}
 958			}
 959		});
 960	}
 961
 962	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
 963		Log.d(Config.LOGTAG,"load more messages for "+conversation.getName() + " prior to "+MessageGenerator.getTimestamp(timestamp));
 964		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
 965			return;
 966		}
 967		new Thread(new Runnable() {
 968			@Override
 969			public void run() {
 970				final Account account = conversation.getAccount();
 971				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
 972				if (messages.size() > 0) {
 973					conversation.addAll(0, messages);
 974					callback.onMoreMessagesLoaded(messages.size(), conversation);
 975				} else if (account.getStatus() == Account.State.ONLINE && account.getXmppConnection() != null && account.getXmppConnection().getFeatures().mam()) {
 976					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
 977					if (query != null) {
 978						query.setCallback(callback);
 979					}
 980					callback.informUser(R.string.fetching_history_from_server);
 981				}
 982			}
 983		}).start();
 984	}
 985
 986	public interface OnMoreMessagesLoaded {
 987		public void onMoreMessagesLoaded(int count,Conversation conversation);
 988		public void informUser(int r);
 989	}
 990
 991	public List<Account> getAccounts() {
 992		return this.accounts;
 993	}
 994
 995	public Conversation find(List<Conversation> haystack, Contact contact) {
 996		for (Conversation conversation : haystack) {
 997			if (conversation.getContact() == contact) {
 998				return conversation;
 999			}
1000		}
1001		return null;
1002	}
1003
1004	public Conversation find(final List<Conversation> haystack,
1005			final Account account,
1006			final Jid jid) {
1007		if (jid == null ) {
1008			return null;
1009		}
1010		for (Conversation conversation : haystack) {
1011			if ((account == null || conversation.getAccount() == account)
1012					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
1013				return conversation;
1014					}
1015		}
1016		return null;
1017	}
1018
1019	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
1020		return this.findOrCreateConversation(account,jid,muc,null);
1021	}
1022
1023	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1024		synchronized (this.conversations) {
1025			Conversation conversation = find(account, jid);
1026			if (conversation != null) {
1027				return conversation;
1028			}
1029			conversation = databaseBackend.findConversation(account, jid);
1030			if (conversation != null) {
1031				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1032				conversation.setAccount(account);
1033				if (muc) {
1034					conversation.setMode(Conversation.MODE_MULTI);
1035				} else {
1036					conversation.setMode(Conversation.MODE_SINGLE);
1037				}
1038				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1039				this.databaseBackend.updateConversation(conversation);
1040			} else {
1041				String conversationName;
1042				Contact contact = account.getRoster().getContact(jid);
1043				if (contact != null) {
1044					conversationName = contact.getDisplayName();
1045				} else {
1046					conversationName = jid.getLocalpart();
1047				}
1048				if (muc) {
1049					conversation = new Conversation(conversationName, account, jid,
1050							Conversation.MODE_MULTI);
1051				} else {
1052					conversation = new Conversation(conversationName, account, jid,
1053							Conversation.MODE_SINGLE);
1054				}
1055				this.databaseBackend.createConversation(conversation);
1056			}
1057			if (query == null) {
1058				this.mMessageArchiveService.query(conversation);
1059			} else {
1060				if (query.getConversation() == null) {
1061					this.mMessageArchiveService.query(conversation,query.getStart());
1062				}
1063			}
1064			this.conversations.add(conversation);
1065			updateConversationUi();
1066			return conversation;
1067		}
1068	}
1069
1070	public void archiveConversation(Conversation conversation) {
1071		synchronized (this.conversations) {
1072			if (conversation.getMode() == Conversation.MODE_MULTI) {
1073				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1074					Bookmark bookmark = conversation.getBookmark();
1075					if (bookmark != null && bookmark.autojoin()) {
1076						bookmark.setAutojoin(false);
1077						pushBookmarks(bookmark.getAccount());
1078					}
1079				}
1080				leaveMuc(conversation);
1081			} else {
1082				conversation.endOtrIfNeeded();
1083			}
1084			this.databaseBackend.updateConversation(conversation);
1085			this.conversations.remove(conversation);
1086			updateConversationUi();
1087		}
1088	}
1089
1090	public void createAccount(Account account) {
1091		account.initOtrEngine(this);
1092		databaseBackend.createAccount(account);
1093		this.accounts.add(account);
1094		this.reconnectAccount(account, false);
1095		updateAccountUi();
1096	}
1097
1098	public void updateAccount(Account account) {
1099		this.statusListener.onStatusChanged(account);
1100		databaseBackend.updateAccount(account);
1101		reconnectAccount(account, false);
1102		updateAccountUi();
1103		getNotificationService().updateErrorNotification();
1104	}
1105
1106	public void deleteAccount(Account account) {
1107		synchronized (this.conversations) {
1108			for (Conversation conversation : conversations) {
1109				if (conversation.getAccount() == account) {
1110					if (conversation.getMode() == Conversation.MODE_MULTI) {
1111						leaveMuc(conversation);
1112					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1113						conversation.endOtrIfNeeded();
1114					}
1115					conversations.remove(conversation);
1116				}
1117			}
1118			if (account.getXmppConnection() != null) {
1119				this.disconnect(account, true);
1120			}
1121			databaseBackend.deleteAccount(account);
1122			this.accounts.remove(account);
1123			updateAccountUi();
1124			getNotificationService().updateErrorNotification();
1125		}
1126	}
1127
1128	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1129		synchronized (this) {
1130			if (checkListeners()) {
1131				switchToForeground();
1132			}
1133			this.mOnConversationUpdate = listener;
1134			this.mNotificationService.setIsInForeground(true);
1135			if (this.convChangedListenerCount < 2) {
1136				this.convChangedListenerCount++;
1137			}
1138		}
1139	}
1140
1141	public void removeOnConversationListChangedListener() {
1142		synchronized (this) {
1143			this.convChangedListenerCount--;
1144			if (this.convChangedListenerCount <= 0) {
1145				this.convChangedListenerCount = 0;
1146				this.mOnConversationUpdate = null;
1147				this.mNotificationService.setIsInForeground(false);
1148				if (checkListeners()) {
1149					switchToBackground();
1150				}
1151			}
1152		}
1153	}
1154
1155	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1156		synchronized (this) {
1157			if (checkListeners()) {
1158				switchToForeground();
1159			}
1160			this.mOnAccountUpdate = listener;
1161			if (this.accountChangedListenerCount < 2) {
1162				this.accountChangedListenerCount++;
1163			}
1164		}
1165	}
1166
1167	public void removeOnAccountListChangedListener() {
1168		synchronized (this) {
1169			this.accountChangedListenerCount--;
1170			if (this.accountChangedListenerCount <= 0) {
1171				this.mOnAccountUpdate = null;
1172				this.accountChangedListenerCount = 0;
1173				if (checkListeners()) {
1174					switchToBackground();
1175				}
1176			}
1177		}
1178	}
1179
1180	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1181		synchronized (this) {
1182			if (checkListeners()) {
1183				switchToForeground();
1184			}
1185			this.mOnRosterUpdate = listener;
1186			if (this.rosterChangedListenerCount < 2) {
1187				this.rosterChangedListenerCount++;
1188			}
1189		}
1190	}
1191
1192	public void removeOnRosterUpdateListener() {
1193		synchronized (this) {
1194			this.rosterChangedListenerCount--;
1195			if (this.rosterChangedListenerCount <= 0) {
1196				this.rosterChangedListenerCount = 0;
1197				this.mOnRosterUpdate = null;
1198				if (checkListeners()) {
1199					switchToBackground();
1200				}
1201			}
1202		}
1203	}
1204
1205	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1206		synchronized (this) {
1207			if (checkListeners()) {
1208				switchToForeground();
1209			}
1210			this.mOnMucRosterUpdate = listener;
1211			if (this.mucRosterChangedListenerCount < 2) {
1212				this.mucRosterChangedListenerCount++;
1213			}
1214		}
1215	}
1216
1217	public void removeOnMucRosterUpdateListener() {
1218		synchronized (this) {
1219			this.mucRosterChangedListenerCount--;
1220			if (this.mucRosterChangedListenerCount <= 0) {
1221				this.mucRosterChangedListenerCount = 0;
1222				this.mOnMucRosterUpdate = null;
1223				if (checkListeners()) {
1224					switchToBackground();
1225				}
1226			}
1227		}
1228	}
1229
1230	private boolean checkListeners() {
1231		return (this.mOnAccountUpdate == null
1232				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1233	}
1234
1235	private void switchToForeground() {
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.sendActive();
1241				}
1242			}
1243		}
1244		Log.d(Config.LOGTAG, "app switched into foreground");
1245	}
1246
1247	private void switchToBackground() {
1248		for (Account account : getAccounts()) {
1249			if (account.getStatus() == Account.State.ONLINE) {
1250				XmppConnection connection = account.getXmppConnection();
1251				if (connection != null && connection.getFeatures().csi()) {
1252					connection.sendInactive();
1253				}
1254			}
1255		}
1256		this.mNotificationService.setIsInForeground(false);
1257		Log.d(Config.LOGTAG, "app switched into background");
1258	}
1259
1260	private void connectMultiModeConversations(Account account) {
1261		List<Conversation> conversations = getConversations();
1262		for (Conversation conversation : conversations) {
1263			if ((conversation.getMode() == Conversation.MODE_MULTI)
1264					&& (conversation.getAccount() == account)) {
1265				conversation.resetMucOptions();
1266				joinMuc(conversation);
1267			}
1268		}
1269	}
1270
1271	public void joinMuc(Conversation conversation) {
1272		Account account = conversation.getAccount();
1273		account.pendingConferenceJoins.remove(conversation);
1274		account.pendingConferenceLeaves.remove(conversation);
1275		if (account.getStatus() == Account.State.ONLINE) {
1276			final String nick = conversation.getMucOptions().getProposedNick();
1277			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1278			if (joinJid == null) {
1279				return; //safety net
1280			}
1281			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1282			PresencePacket packet = new PresencePacket();
1283			packet.setFrom(conversation.getAccount().getJid());
1284			packet.setTo(joinJid);
1285			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1286			if (conversation.getMucOptions().getPassword() != null) {
1287				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1288			}
1289			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1290			String sig = account.getPgpSignature();
1291			if (sig != null) {
1292				packet.addChild("status").setContent("online");
1293				packet.addChild("x", "jabber:x:signed").setContent(sig);
1294			}
1295			sendPresencePacket(account, packet);
1296			if (!joinJid.equals(conversation.getContactJid())) {
1297				conversation.setContactJid(joinJid);
1298				databaseBackend.updateConversation(conversation);
1299			}
1300		} else {
1301			account.pendingConferenceJoins.add(conversation);
1302		}
1303	}
1304
1305	public void providePasswordForMuc(Conversation conversation, String password) {
1306		if (conversation.getMode() == Conversation.MODE_MULTI) {
1307			conversation.getMucOptions().setPassword(password);
1308			if (conversation.getBookmark() != null) {
1309				conversation.getBookmark().setAutojoin(true);
1310				pushBookmarks(conversation.getAccount());
1311			}
1312			databaseBackend.updateConversation(conversation);
1313			joinMuc(conversation);
1314		}
1315	}
1316
1317	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1318		final MucOptions options = conversation.getMucOptions();
1319		final Jid joinJid = options.createJoinJid(nick);
1320		if (options.online()) {
1321			Account account = conversation.getAccount();
1322			options.setOnRenameListener(new OnRenameListener() {
1323
1324				@Override
1325				public void onSuccess() {
1326					conversation.setContactJid(joinJid);
1327					databaseBackend.updateConversation(conversation);
1328					Bookmark bookmark = conversation.getBookmark();
1329					if (bookmark != null) {
1330						bookmark.setNick(nick);
1331						pushBookmarks(bookmark.getAccount());
1332					}
1333					callback.success(conversation);
1334				}
1335
1336				@Override
1337				public void onFailure() {
1338					callback.error(R.string.nick_in_use, conversation);
1339				}
1340			});
1341
1342			PresencePacket packet = new PresencePacket();
1343			packet.setTo(joinJid);
1344			packet.setFrom(conversation.getAccount().getJid());
1345
1346			String sig = account.getPgpSignature();
1347			if (sig != null) {
1348				packet.addChild("status").setContent("online");
1349				packet.addChild("x", "jabber:x:signed").setContent(sig);
1350			}
1351			sendPresencePacket(account, packet);
1352		} else {
1353			conversation.setContactJid(joinJid);
1354			databaseBackend.updateConversation(conversation);
1355			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1356				Bookmark bookmark = conversation.getBookmark();
1357				if (bookmark != null) {
1358					bookmark.setNick(nick);
1359					pushBookmarks(bookmark.getAccount());
1360				}
1361				joinMuc(conversation);
1362			}
1363		}
1364	}
1365
1366	public void leaveMuc(Conversation conversation) {
1367		Account account = conversation.getAccount();
1368		account.pendingConferenceJoins.remove(conversation);
1369		account.pendingConferenceLeaves.remove(conversation);
1370		if (account.getStatus() == Account.State.ONLINE) {
1371			PresencePacket packet = new PresencePacket();
1372			packet.setTo(conversation.getContactJid());
1373			packet.setFrom(conversation.getAccount().getJid());
1374			packet.setAttribute("type", "unavailable");
1375			sendPresencePacket(conversation.getAccount(), packet);
1376			conversation.getMucOptions().setOffline();
1377			conversation.deregisterWithBookmark();
1378			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1379					+ ": leaving muc " + conversation.getContactJid());
1380		} else {
1381			account.pendingConferenceLeaves.add(conversation);
1382		}
1383	}
1384
1385	private String findConferenceServer(final Account account) {
1386		String server;
1387		if (account.getXmppConnection() != null) {
1388			server = account.getXmppConnection().getMucServer();
1389			if (server != null) {
1390				return server;
1391			}
1392		}
1393		for(Account other : getAccounts()) {
1394			if (other != account && other.getXmppConnection() != null) {
1395				server = other.getXmppConnection().getMucServer();
1396				if (server != null) {
1397					return server;
1398				}
1399			}
1400		}
1401		return null;
1402	}
1403
1404	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1405		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1406		if (account.getStatus() == Account.State.ONLINE) {
1407			try {
1408				String server = findConferenceServer(account);
1409				if (server == null) {
1410					if (callback != null) {
1411						callback.error(R.string.no_conference_server_found,null);
1412					}
1413					return;
1414				}
1415				String name = new BigInteger(75,getRNG()).toString(32);
1416				Jid jid = Jid.fromParts(name,server,null);
1417				final Conversation conversation = findOrCreateConversation(account, jid, true);
1418				joinMuc(conversation);
1419				Bundle options = new Bundle();
1420				options.putString("muc#roomconfig_persistentroom", "1");
1421				options.putString("muc#roomconfig_membersonly", "1");
1422				options.putString("muc#roomconfig_publicroom", "0");
1423				options.putString("muc#roomconfig_whois", "anyone");
1424				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1425					@Override
1426					public void onPushSucceeded() {
1427						for(Jid invite : jids) {
1428							invite(conversation,invite);
1429						}
1430						if (callback != null) {
1431							callback.success(conversation);
1432						}
1433					}
1434
1435					@Override
1436					public void onPushFailed() {
1437						if (callback != null) {
1438							callback.error(R.string.conference_creation_failed, conversation);
1439						}
1440					}
1441				});
1442
1443			} catch (InvalidJidException e) {
1444				if (callback != null) {
1445					callback.error(R.string.conference_creation_failed, null);
1446				}
1447			}
1448		} else {
1449			if (callback != null) {
1450				callback.error(R.string.not_connected_try_again,null);
1451			}
1452		}
1453	}
1454
1455	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1456		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1457		request.setTo(conversation.getContactJid().toBareJid());
1458		request.query("http://jabber.org/protocol/muc#owner");
1459		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1460			@Override
1461			public void onIqPacketReceived(Account account, IqPacket packet) {
1462				if (packet.getType() != IqPacket.TYPE_ERROR) {
1463					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1464					for (Field field : data.getFields()) {
1465						if (options.containsKey(field.getName())) {
1466							field.setValue(options.getString(field.getName()));
1467						}
1468					}
1469					data.submit();
1470					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1471					set.setTo(conversation.getContactJid().toBareJid());
1472					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1473					sendIqPacket(account, set, new OnIqPacketReceived() {
1474						@Override
1475						public void onIqPacketReceived(Account account, IqPacket packet) {
1476							if (packet.getType() == IqPacket.TYPE_RESULT) {
1477								if (callback != null) {
1478									callback.onPushSucceeded();
1479								}
1480							} else {
1481								if (callback != null) {
1482									callback.onPushFailed();
1483								}
1484							}
1485						}
1486					});
1487				} else {
1488					if (callback != null) {
1489						callback.onPushFailed();
1490					}
1491				}
1492			}
1493		});
1494	}
1495
1496	public void disconnect(Account account, boolean force) {
1497		if ((account.getStatus() == Account.State.ONLINE)
1498				|| (account.getStatus() == Account.State.DISABLED)) {
1499			if (!force) {
1500				List<Conversation> conversations = getConversations();
1501				for (Conversation conversation : conversations) {
1502					if (conversation.getAccount() == account) {
1503						if (conversation.getMode() == Conversation.MODE_MULTI) {
1504							leaveMuc(conversation);
1505						} else {
1506							if (conversation.endOtrIfNeeded()) {
1507								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1508										+ ": ended otr session with "
1509										+ conversation.getContactJid());
1510							}
1511						}
1512					}
1513				}
1514			}
1515			account.getXmppConnection().disconnect(force);
1516				}
1517	}
1518
1519	@Override
1520	public IBinder onBind(Intent intent) {
1521		return mBinder;
1522	}
1523
1524	public void updateMessage(Message message) {
1525		databaseBackend.updateMessage(message);
1526		updateConversationUi();
1527	}
1528
1529	protected void syncDirtyContacts(Account account) {
1530		for (Contact contact : account.getRoster().getContacts()) {
1531			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1532				pushContactToServer(contact);
1533			}
1534			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1535				deleteContactOnServer(contact);
1536			}
1537		}
1538	}
1539
1540	public void createContact(Contact contact) {
1541		SharedPreferences sharedPref = getPreferences();
1542		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1543		if (autoGrant) {
1544			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1545			contact.setOption(Contact.Options.ASKING);
1546		}
1547		pushContactToServer(contact);
1548	}
1549
1550	public void onOtrSessionEstablished(Conversation conversation) {
1551		final Account account = conversation.getAccount();
1552		final Session otrSession = conversation.getOtrSession();
1553		Log.d(Config.LOGTAG,
1554				account.getJid().toBareJid() + " otr session established with "
1555						+ conversation.getContactJid() + "/"
1556						+ otrSession.getSessionID().getUserID());
1557		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1558
1559			@Override
1560			public void onMessageFound(Message message) {
1561				SessionID id = otrSession.getSessionID();
1562				try {
1563					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1564				} catch (InvalidJidException e) {
1565					return;
1566				}
1567				if (message.getType() == Message.TYPE_TEXT) {
1568					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1569					if (outPacket != null) {
1570						message.setStatus(Message.STATUS_SEND);
1571						databaseBackend.updateMessage(message);
1572						sendMessagePacket(account, outPacket);
1573					}
1574				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1575					mJingleConnectionManager.createNewConnection(message);
1576				}
1577				updateConversationUi();
1578			}
1579		});
1580	}
1581
1582	public boolean renewSymmetricKey(Conversation conversation) {
1583		Account account = conversation.getAccount();
1584		byte[] symmetricKey = new byte[32];
1585		this.mRandom.nextBytes(symmetricKey);
1586		Session otrSession = conversation.getOtrSession();
1587		if (otrSession != null) {
1588			MessagePacket packet = new MessagePacket();
1589			packet.setType(MessagePacket.TYPE_CHAT);
1590			packet.setFrom(account.getJid());
1591			packet.addChild("private", "urn:xmpp:carbons:2");
1592			packet.addChild("no-copy", "urn:xmpp:hints");
1593			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1594					+ otrSession.getSessionID().getUserID());
1595			try {
1596				packet.setBody(otrSession
1597						.transformSending(CryptoHelper.FILETRANSFER
1598							+ CryptoHelper.bytesToHex(symmetricKey)));
1599				sendMessagePacket(account, packet);
1600				conversation.setSymmetricKey(symmetricKey);
1601				return true;
1602			} catch (OtrException e) {
1603				return false;
1604			}
1605		}
1606		return false;
1607	}
1608
1609	public void pushContactToServer(Contact contact) {
1610		contact.resetOption(Contact.Options.DIRTY_DELETE);
1611		contact.setOption(Contact.Options.DIRTY_PUSH);
1612		Account account = contact.getAccount();
1613		if (account.getStatus() == Account.State.ONLINE) {
1614			boolean ask = contact.getOption(Contact.Options.ASKING);
1615			boolean sendUpdates = contact
1616				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1617				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1618			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1619			iq.query("jabber:iq:roster").addChild(contact.asElement());
1620			account.getXmppConnection().sendIqPacket(iq, null);
1621			if (sendUpdates) {
1622				sendPresencePacket(account,
1623						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1624			}
1625			if (ask) {
1626				sendPresencePacket(account,
1627						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1628			}
1629		}
1630	}
1631
1632	public void publishAvatar(Account account, Uri image,
1633			final UiCallback<Avatar> callback) {
1634		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1635		final int size = Config.AVATAR_SIZE;
1636		final Avatar avatar = getFileBackend()
1637			.getPepAvatar(image, size, format);
1638		if (avatar != null) {
1639			avatar.height = size;
1640			avatar.width = size;
1641			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1642				avatar.type = "image/webp";
1643			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1644				avatar.type = "image/jpeg";
1645			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1646				avatar.type = "image/png";
1647			}
1648			if (!getFileBackend().save(avatar)) {
1649				callback.error(R.string.error_saving_avatar, avatar);
1650				return;
1651			}
1652			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1653			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1654
1655				@Override
1656				public void onIqPacketReceived(Account account, IqPacket result) {
1657					if (result.getType() == IqPacket.TYPE_RESULT) {
1658						IqPacket packet = XmppConnectionService.this.mIqGenerator
1659							.publishAvatarMetadata(avatar);
1660						sendIqPacket(account, packet, new OnIqPacketReceived() {
1661
1662							@Override
1663							public void onIqPacketReceived(Account account,
1664									IqPacket result) {
1665								if (result.getType() == IqPacket.TYPE_RESULT) {
1666									if (account.setAvatar(avatar.getFilename())) {
1667										databaseBackend.updateAccount(account);
1668									}
1669									callback.success(avatar);
1670								} else {
1671									callback.error(
1672											R.string.error_publish_avatar_server_reject,
1673											avatar);
1674								}
1675							}
1676						});
1677					} else {
1678						callback.error(
1679								R.string.error_publish_avatar_server_reject,
1680								avatar);
1681					}
1682				}
1683			});
1684		} else {
1685			callback.error(R.string.error_publish_avatar_converting, null);
1686		}
1687	}
1688
1689	public void fetchAvatar(Account account, Avatar avatar) {
1690		fetchAvatar(account, avatar, null);
1691	}
1692
1693	public void fetchAvatar(Account account, final Avatar avatar,
1694			final UiCallback<Avatar> callback) {
1695		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1696		sendIqPacket(account, packet, new OnIqPacketReceived() {
1697
1698			@Override
1699			public void onIqPacketReceived(Account account, IqPacket result) {
1700				final String ERROR = account.getJid().toBareJid()
1701						+ ": fetching avatar for " + avatar.owner + " failed ";
1702				if (result.getType() == IqPacket.TYPE_RESULT) {
1703					avatar.image = mIqParser.avatarData(result);
1704					if (avatar.image != null) {
1705						if (getFileBackend().save(avatar)) {
1706							if (account.getJid().toBareJid().equals(avatar.owner)) {
1707								if (account.setAvatar(avatar.getFilename())) {
1708									databaseBackend.updateAccount(account);
1709								}
1710								getAvatarService().clear(account);
1711								updateConversationUi();
1712								updateAccountUi();
1713							} else {
1714								Contact contact = account.getRoster()
1715										.getContact(avatar.owner);
1716								contact.setAvatar(avatar.getFilename());
1717								getAvatarService().clear(contact);
1718								updateConversationUi();
1719								updateRosterUi();
1720							}
1721							if (callback != null) {
1722								callback.success(avatar);
1723							}
1724							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1725									+ ": succesfully fetched avatar for "
1726									+ avatar.owner);
1727							return;
1728						}
1729					} else {
1730
1731						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1732					}
1733				} else {
1734					Element error = result.findChild("error");
1735					if (error == null) {
1736						Log.d(Config.LOGTAG, ERROR + "(server error)");
1737					} else {
1738						Log.d(Config.LOGTAG, ERROR + error.toString());
1739					}
1740				}
1741				if (callback != null) {
1742					callback.error(0, null);
1743				}
1744
1745			}
1746		});
1747	}
1748
1749	public void checkForAvatar(Account account,
1750			final UiCallback<Avatar> callback) {
1751		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1752		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1753
1754			@Override
1755			public void onIqPacketReceived(Account account, IqPacket packet) {
1756				if (packet.getType() == IqPacket.TYPE_RESULT) {
1757					Element pubsub = packet.findChild("pubsub",
1758							"http://jabber.org/protocol/pubsub");
1759					if (pubsub != null) {
1760						Element items = pubsub.findChild("items");
1761						if (items != null) {
1762							Avatar avatar = Avatar.parseMetadata(items);
1763							if (avatar != null) {
1764								avatar.owner = account.getJid().toBareJid();
1765								if (fileBackend.isAvatarCached(avatar)) {
1766									if (account.setAvatar(avatar.getFilename())) {
1767										databaseBackend.updateAccount(account);
1768									}
1769									getAvatarService().clear(account);
1770									callback.success(avatar);
1771								} else {
1772									fetchAvatar(account, avatar, callback);
1773								}
1774								return;
1775							}
1776						}
1777					}
1778				}
1779				callback.error(0, null);
1780			}
1781		});
1782	}
1783
1784	public void deleteContactOnServer(Contact contact) {
1785		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1786		contact.resetOption(Contact.Options.DIRTY_PUSH);
1787		contact.setOption(Contact.Options.DIRTY_DELETE);
1788		Account account = contact.getAccount();
1789		if (account.getStatus() == Account.State.ONLINE) {
1790			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1791			Element item = iq.query("jabber:iq:roster").addChild("item");
1792			item.setAttribute("jid", contact.getJid().toString());
1793			item.setAttribute("subscription", "remove");
1794			account.getXmppConnection().sendIqPacket(iq, null);
1795		}
1796	}
1797
1798	public void updateConversation(Conversation conversation) {
1799		this.databaseBackend.updateConversation(conversation);
1800	}
1801
1802	public void reconnectAccount(final Account account, final boolean force) {
1803		new Thread(new Runnable() {
1804
1805			@Override
1806			public void run() {
1807				if (account.getXmppConnection() != null) {
1808					disconnect(account, force);
1809				}
1810				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1811					if (account.getXmppConnection() == null) {
1812						account.setXmppConnection(createConnection(account));
1813					}
1814					Thread thread = new Thread(account.getXmppConnection());
1815					thread.start();
1816					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1817							false);
1818				} else {
1819					account.getRoster().clearPresences();
1820					account.setXmppConnection(null);
1821				}
1822			}
1823		}).start();
1824	}
1825
1826	public void invite(Conversation conversation, Jid contact) {
1827		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1828		sendMessagePacket(conversation.getAccount(), packet);
1829	}
1830
1831	public void resetSendingToWaiting(Account account) {
1832		for (Conversation conversation : getConversations()) {
1833			if (conversation.getAccount() == account) {
1834				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1835
1836					@Override
1837					public void onMessageFound(Message message) {
1838						markMessage(message, Message.STATUS_WAITING);
1839					}
1840				});
1841			}
1842		}
1843	}
1844
1845	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1846			final int status) {
1847		if (uuid == null) {
1848			return false;
1849		} else {
1850			for (Conversation conversation : getConversations()) {
1851				if (conversation.getContactJid().equals(recipient)
1852						&& conversation.getAccount().equals(account)) {
1853					return markMessage(conversation, uuid, status);
1854						}
1855			}
1856			return false;
1857		}
1858	}
1859
1860	public boolean markMessage(Conversation conversation, String uuid,
1861			int status) {
1862		if (uuid == null) {
1863			return false;
1864		} else {
1865			Message message = conversation.findSentMessageWithUuid(uuid);
1866			if (message!=null) {
1867				markMessage(message,status);
1868				return true;
1869			} else {
1870				return false;
1871			}
1872		}
1873	}
1874
1875	public void markMessage(Message message, int status) {
1876		if (status == Message.STATUS_SEND_FAILED
1877				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1878					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1879			return;
1880					}
1881		message.setStatus(status);
1882		databaseBackend.updateMessage(message);
1883		updateConversationUi();
1884	}
1885
1886	public SharedPreferences getPreferences() {
1887		return PreferenceManager
1888			.getDefaultSharedPreferences(getApplicationContext());
1889	}
1890
1891	public boolean forceEncryption() {
1892		return getPreferences().getBoolean("force_encryption", false);
1893	}
1894
1895	public boolean confirmMessages() {
1896		return getPreferences().getBoolean("confirm_messages", true);
1897	}
1898
1899	public boolean saveEncryptedMessages() {
1900		return !getPreferences().getBoolean("dont_save_encrypted", false);
1901	}
1902
1903	public boolean indicateReceived() {
1904		return getPreferences().getBoolean("indicate_received", false);
1905	}
1906
1907	public void updateConversationUi() {
1908		if (mOnConversationUpdate != null) {
1909			mOnConversationUpdate.onConversationUpdate();
1910		}
1911	}
1912
1913	public void updateAccountUi() {
1914		if (mOnAccountUpdate != null) {
1915			mOnAccountUpdate.onAccountUpdate();
1916		}
1917	}
1918
1919	public void updateRosterUi() {
1920		if (mOnRosterUpdate != null) {
1921			mOnRosterUpdate.onRosterUpdate();
1922		}
1923	}
1924
1925	public void updateMucRosterUi() {
1926		if (mOnMucRosterUpdate != null) {
1927			mOnMucRosterUpdate.onMucRosterUpdate();
1928		}
1929	}
1930
1931	public Account findAccountByJid(final Jid accountJid) {
1932		for (Account account : this.accounts) {
1933			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1934				return account;
1935			}
1936		}
1937		return null;
1938	}
1939
1940	public Conversation findConversationByUuid(String uuid) {
1941		for (Conversation conversation : getConversations()) {
1942			if (conversation.getUuid().equals(uuid)) {
1943				return conversation;
1944			}
1945		}
1946		return null;
1947	}
1948
1949	public void markRead(Conversation conversation, boolean calledByUi) {
1950		mNotificationService.clear(conversation);
1951		final Message markable = conversation.getLatestMarkableMessage();
1952		conversation.markRead();
1953		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1954			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1955			Account account = conversation.getAccount();
1956			final Jid to = markable.getCounterpart();
1957			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1958			this.sendMessagePacket(conversation.getAccount(),packet);
1959		}
1960		if (!calledByUi) {
1961			updateConversationUi();
1962		}
1963	}
1964
1965	public SecureRandom getRNG() {
1966		return this.mRandom;
1967	}
1968
1969	public MemorizingTrustManager getMemorizingTrustManager() {
1970		return this.mMemorizingTrustManager;
1971	}
1972
1973	public PowerManager getPowerManager() {
1974		return this.pm;
1975	}
1976
1977	public LruCache<String, Bitmap> getBitmapCache() {
1978		return this.mBitmapCache;
1979	}
1980
1981	public void syncRosterToDisk(final Account account) {
1982		new Thread(new Runnable() {
1983
1984			@Override
1985			public void run() {
1986				databaseBackend.writeRoster(account.getRoster());
1987			}
1988		}).start();
1989
1990	}
1991
1992	public List<String> getKnownHosts() {
1993		List<String> hosts = new ArrayList<>();
1994		for (Account account : getAccounts()) {
1995			if (!hosts.contains(account.getServer().toString())) {
1996				hosts.add(account.getServer().toString());
1997			}
1998			for (Contact contact : account.getRoster().getContacts()) {
1999				if (contact.showInRoster()) {
2000					final String server = contact.getServer().toString();
2001					if (server != null && !hosts.contains(server)) {
2002						hosts.add(server);
2003					}
2004				}
2005			}
2006		}
2007		return hosts;
2008	}
2009
2010	public List<String> getKnownConferenceHosts() {
2011		ArrayList<String> mucServers = new ArrayList<>();
2012		for (Account account : accounts) {
2013			if (account.getXmppConnection() != null) {
2014				String server = account.getXmppConnection().getMucServer();
2015				if (server != null && !mucServers.contains(server)) {
2016					mucServers.add(server);
2017				}
2018			}
2019		}
2020		return mucServers;
2021	}
2022
2023	public void sendMessagePacket(Account account, MessagePacket packet) {
2024		XmppConnection connection = account.getXmppConnection();
2025		if (connection != null) {
2026			connection.sendMessagePacket(packet);
2027		}
2028	}
2029
2030	public void sendPresencePacket(Account account, PresencePacket packet) {
2031		XmppConnection connection = account.getXmppConnection();
2032		if (connection != null) {
2033			connection.sendPresencePacket(packet);
2034		}
2035	}
2036
2037	public void sendIqPacket(Account account, IqPacket packet,
2038			OnIqPacketReceived callback) {
2039		XmppConnection connection = account.getXmppConnection();
2040		if (connection != null) {
2041			connection.sendIqPacket(packet, callback);
2042		}
2043	}
2044
2045	public MessageGenerator getMessageGenerator() {
2046		return this.mMessageGenerator;
2047	}
2048
2049	public PresenceGenerator getPresenceGenerator() {
2050		return this.mPresenceGenerator;
2051	}
2052
2053	public IqGenerator getIqGenerator() {
2054		return this.mIqGenerator;
2055	}
2056
2057	public JingleConnectionManager getJingleConnectionManager() {
2058		return this.mJingleConnectionManager;
2059	}
2060
2061	public MessageArchiveService getMessageArchiveService() {
2062		return this.mMessageArchiveService;
2063	}
2064
2065	public List<Contact> findContacts(Jid jid) {
2066		ArrayList<Contact> contacts = new ArrayList<>();
2067		for (Account account : getAccounts()) {
2068			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2069				Contact contact = account.getRoster().getContactFromRoster(jid);
2070				if (contact != null) {
2071					contacts.add(contact);
2072				}
2073			}
2074		}
2075		return contacts;
2076	}
2077
2078	public NotificationService getNotificationService() {
2079		return this.mNotificationService;
2080	}
2081
2082	public HttpConnectionManager getHttpConnectionManager() {
2083		return this.mHttpConnectionManager;
2084	}
2085
2086	public void resendFailedMessages(Message message) {
2087		List<Message> messages = new ArrayList<>();
2088		Message current = message;
2089		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2090			messages.add(current);
2091			if (current.mergeable(current.next())) {
2092				current = current.next();
2093			} else {
2094				break;
2095			}
2096		}
2097		for (Message msg : messages) {
2098			markMessage(msg, Message.STATUS_WAITING);
2099			this.resendMessage(msg);
2100		}
2101	}
2102
2103	public void clearConversationHistory(final Conversation conversation) {
2104		conversation.clearMessages();
2105		new Thread(new Runnable() {
2106			@Override
2107			public void run() {
2108				databaseBackend.deleteMessagesInConversation(conversation);
2109			}
2110		}).start();
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	public interface OnMucRosterUpdate {
2126		public void onMucRosterUpdate();
2127	}
2128
2129	private interface OnConferenceOptionsPushed {
2130		public void onPushSucceeded();
2131		public void onPushFailed();
2132	}
2133
2134	public class XmppConnectionBinder extends Binder {
2135		public XmppConnectionService getService() {
2136			return XmppConnectionService.this;
2137		}
2138	}
2139}