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							break;
 869						}
 870						final Contact contact = account.getRoster()
 871								.getContact(jid);
 872						String systemAccount = phoneContact.getInt("phoneid")
 873								+ "#"
 874								+ phoneContact.getString("lookup");
 875						contact.setSystemAccount(systemAccount);
 876						contact.setPhotoUri(phoneContact.getString("photouri"));
 877						getAvatarService().clear(contact);
 878						contact.setSystemName(phoneContact.getString("displayname"));
 879					}
 880				}
 881				Log.d(Config.LOGTAG,"finished merging phone contacts");
 882				updateAccountUi();
 883			}
 884		});
 885		mPhoneContactMergerThread.start();
 886	}
 887
 888	private void initConversations() {
 889		synchronized (this.conversations) {
 890			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 891			for (Account account : this.accounts) {
 892				accountLookupTable.put(account.getUuid(), account);
 893			}
 894			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 895			for (Conversation conversation : this.conversations) {
 896				Account account = accountLookupTable.get(conversation.getAccountUuid());
 897				conversation.setAccount(account);
 898				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 899				checkDeletedFiles(conversation);
 900			}
 901		}
 902	}
 903
 904	public List<Conversation> getConversations() {
 905		return this.conversations;
 906	}
 907
 908	private void checkDeletedFiles(Conversation conversation) {
 909		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 910
 911			@Override
 912			public void onMessageFound(Message message) {
 913				if (!getFileBackend().isFileAvailable(message)) {
 914					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 915				}
 916			}
 917		});
 918	}
 919
 920	private void markFileDeleted(String uuid) {
 921		for (Conversation conversation : getConversations()) {
 922			Message message = conversation.findMessageWithFileAndUuid(uuid);
 923			if (message != null) {
 924				if (!getFileBackend().isFileAvailable(message)) {
 925					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 926					updateConversationUi();
 927				}
 928				return;
 929			}
 930		}
 931	}
 932
 933	public void populateWithOrderedConversations(final List<Conversation> list) {
 934		populateWithOrderedConversations(list, true);
 935	}
 936
 937	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 938		list.clear();
 939		if (includeConferences) {
 940			list.addAll(getConversations());
 941		} else {
 942			for (Conversation conversation : getConversations()) {
 943				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 944					list.add(conversation);
 945				}
 946			}
 947		}
 948		Collections.sort(list, new Comparator<Conversation>() {
 949			@Override
 950			public int compare(Conversation lhs, Conversation rhs) {
 951				Message left = lhs.getLatestMessage();
 952				Message right = rhs.getLatestMessage();
 953				if (left.getTimeSent() > right.getTimeSent()) {
 954					return -1;
 955				} else if (left.getTimeSent() < right.getTimeSent()) {
 956					return 1;
 957				} else {
 958					return 0;
 959				}
 960			}
 961		});
 962	}
 963
 964	public void loadMoreMessages(Conversation conversation, long timestamp, final OnMoreMessagesLoaded callback) {
 965		if (this.getMessageArchiveService().queryInProgress(conversation)) {
 966			Log.d(Config.LOGTAG,"query in progress");
 967			return;
 968		}
 969		List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
 970		if (messages.size() == 0 && (conversation.getAccount().getXmppConnection() != null && conversation.getAccount().getXmppConnection().getFeatures().mam())) {
 971			Log.d(Config.LOGTAG,"load more messages with mam");
 972			MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
 973			if (query != null) {
 974				query.setCallback(callback);
 975			}
 976			return;
 977		}
 978		for (Message message : messages) {
 979			message.setConversation(conversation);
 980		}
 981		conversation.addAll(0, messages);
 982		callback.onMoreMessagesLoaded(messages.size(),conversation);
 983	}
 984
 985	public interface OnMoreMessagesLoaded {
 986		public void onMoreMessagesLoaded(int count,Conversation conversation);
 987	}
 988
 989	public List<Account> getAccounts() {
 990		return this.accounts;
 991	}
 992
 993	public Conversation find(List<Conversation> haystack, Contact contact) {
 994		for (Conversation conversation : haystack) {
 995			if (conversation.getContact() == contact) {
 996				return conversation;
 997			}
 998		}
 999		return null;
1000	}
1001
1002	public Conversation find(final List<Conversation> haystack,
1003			final Account account,
1004			final Jid jid) {
1005		if (jid == null ) {
1006			return null;
1007		}
1008		for (Conversation conversation : haystack) {
1009			if ((account == null || conversation.getAccount() == account)
1010					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
1011				return conversation;
1012					}
1013		}
1014		return null;
1015	}
1016
1017	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
1018		return this.findOrCreateConversation(account,jid,muc,null);
1019	}
1020
1021	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1022		synchronized (this.conversations) {
1023			Conversation conversation = find(account, jid);
1024			if (conversation != null) {
1025				return conversation;
1026			}
1027			conversation = databaseBackend.findConversation(account, jid);
1028			if (conversation != null) {
1029				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1030				conversation.setAccount(account);
1031				if (muc) {
1032					conversation.setMode(Conversation.MODE_MULTI);
1033				} else {
1034					conversation.setMode(Conversation.MODE_SINGLE);
1035				}
1036				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1037				this.databaseBackend.updateConversation(conversation);
1038			} else {
1039				String conversationName;
1040				Contact contact = account.getRoster().getContact(jid);
1041				if (contact != null) {
1042					conversationName = contact.getDisplayName();
1043				} else {
1044					conversationName = jid.getLocalpart();
1045				}
1046				if (muc) {
1047					conversation = new Conversation(conversationName, account, jid,
1048							Conversation.MODE_MULTI);
1049				} else {
1050					conversation = new Conversation(conversationName, account, jid,
1051							Conversation.MODE_SINGLE);
1052				}
1053				this.databaseBackend.createConversation(conversation);
1054			}
1055			if (query == null) {
1056				this.mMessageArchiveService.query(conversation);
1057			} else {
1058				if (query.getConversation() == null) {
1059					this.mMessageArchiveService.query(conversation,query.getStart());
1060				}
1061			}
1062			this.conversations.add(conversation);
1063			updateConversationUi();
1064			return conversation;
1065		}
1066	}
1067
1068	public void archiveConversation(Conversation conversation) {
1069		synchronized (this.conversations) {
1070			if (conversation.getMode() == Conversation.MODE_MULTI) {
1071				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1072					Bookmark bookmark = conversation.getBookmark();
1073					if (bookmark != null && bookmark.autojoin()) {
1074						bookmark.setAutojoin(false);
1075						pushBookmarks(bookmark.getAccount());
1076					}
1077				}
1078				leaveMuc(conversation);
1079			} else {
1080				conversation.endOtrIfNeeded();
1081			}
1082			this.databaseBackend.updateConversation(conversation);
1083			this.conversations.remove(conversation);
1084			updateConversationUi();
1085		}
1086	}
1087
1088	public void createAccount(Account account) {
1089		account.initOtrEngine(this);
1090		databaseBackend.createAccount(account);
1091		this.accounts.add(account);
1092		this.reconnectAccount(account, false);
1093		updateAccountUi();
1094	}
1095
1096	public void updateAccount(Account account) {
1097		this.statusListener.onStatusChanged(account);
1098		databaseBackend.updateAccount(account);
1099		reconnectAccount(account, false);
1100		updateAccountUi();
1101		getNotificationService().updateErrorNotification();
1102	}
1103
1104	public void deleteAccount(Account account) {
1105		synchronized (this.conversations) {
1106			for (Conversation conversation : conversations) {
1107				if (conversation.getAccount() == account) {
1108					if (conversation.getMode() == Conversation.MODE_MULTI) {
1109						leaveMuc(conversation);
1110					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1111						conversation.endOtrIfNeeded();
1112					}
1113					conversations.remove(conversation);
1114				}
1115			}
1116			if (account.getXmppConnection() != null) {
1117				this.disconnect(account, true);
1118			}
1119			databaseBackend.deleteAccount(account);
1120			this.accounts.remove(account);
1121			updateAccountUi();
1122			getNotificationService().updateErrorNotification();
1123		}
1124	}
1125
1126	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1127		synchronized (this) {
1128			if (checkListeners()) {
1129				switchToForeground();
1130			}
1131			this.mOnConversationUpdate = listener;
1132			this.mNotificationService.setIsInForeground(true);
1133			if (this.convChangedListenerCount < 2) {
1134				this.convChangedListenerCount++;
1135			}
1136		}
1137	}
1138
1139	public void removeOnConversationListChangedListener() {
1140		synchronized (this) {
1141			this.convChangedListenerCount--;
1142			if (this.convChangedListenerCount <= 0) {
1143				this.convChangedListenerCount = 0;
1144				this.mOnConversationUpdate = null;
1145				this.mNotificationService.setIsInForeground(false);
1146				if (checkListeners()) {
1147					switchToBackground();
1148				}
1149			}
1150		}
1151	}
1152
1153	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1154		synchronized (this) {
1155			if (checkListeners()) {
1156				switchToForeground();
1157			}
1158			this.mOnAccountUpdate = listener;
1159			if (this.accountChangedListenerCount < 2) {
1160				this.accountChangedListenerCount++;
1161			}
1162		}
1163	}
1164
1165	public void removeOnAccountListChangedListener() {
1166		synchronized (this) {
1167			this.accountChangedListenerCount--;
1168			if (this.accountChangedListenerCount <= 0) {
1169				this.mOnAccountUpdate = null;
1170				this.accountChangedListenerCount = 0;
1171				if (checkListeners()) {
1172					switchToBackground();
1173				}
1174			}
1175		}
1176	}
1177
1178	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1179		synchronized (this) {
1180			if (checkListeners()) {
1181				switchToForeground();
1182			}
1183			this.mOnRosterUpdate = listener;
1184			if (this.rosterChangedListenerCount < 2) {
1185				this.rosterChangedListenerCount++;
1186			}
1187		}
1188	}
1189
1190	public void removeOnRosterUpdateListener() {
1191		synchronized (this) {
1192			this.rosterChangedListenerCount--;
1193			if (this.rosterChangedListenerCount <= 0) {
1194				this.rosterChangedListenerCount = 0;
1195				this.mOnRosterUpdate = null;
1196				if (checkListeners()) {
1197					switchToBackground();
1198				}
1199			}
1200		}
1201	}
1202
1203	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1204		synchronized (this) {
1205			if (checkListeners()) {
1206				switchToForeground();
1207			}
1208			this.mOnMucRosterUpdate = listener;
1209			if (this.mucRosterChangedListenerCount < 2) {
1210				this.mucRosterChangedListenerCount++;
1211			}
1212		}
1213	}
1214
1215	public void removeOnMucRosterUpdateListener() {
1216		synchronized (this) {
1217			this.mucRosterChangedListenerCount--;
1218			if (this.mucRosterChangedListenerCount <= 0) {
1219				this.mucRosterChangedListenerCount = 0;
1220				this.mOnMucRosterUpdate = null;
1221				if (checkListeners()) {
1222					switchToBackground();
1223				}
1224			}
1225		}
1226	}
1227
1228	private boolean checkListeners() {
1229		return (this.mOnAccountUpdate == null
1230				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1231	}
1232
1233	private void switchToForeground() {
1234		for (Account account : getAccounts()) {
1235			if (account.getStatus() == Account.State.ONLINE) {
1236				XmppConnection connection = account.getXmppConnection();
1237				if (connection != null && connection.getFeatures().csi()) {
1238					connection.sendActive();
1239				}
1240			}
1241		}
1242		Log.d(Config.LOGTAG, "app switched into foreground");
1243	}
1244
1245	private void switchToBackground() {
1246		for (Account account : getAccounts()) {
1247			if (account.getStatus() == Account.State.ONLINE) {
1248				XmppConnection connection = account.getXmppConnection();
1249				if (connection != null && connection.getFeatures().csi()) {
1250					connection.sendInactive();
1251				}
1252			}
1253		}
1254		this.mNotificationService.setIsInForeground(false);
1255		Log.d(Config.LOGTAG, "app switched into background");
1256	}
1257
1258	private void connectMultiModeConversations(Account account) {
1259		List<Conversation> conversations = getConversations();
1260		for (Conversation conversation : conversations) {
1261			if ((conversation.getMode() == Conversation.MODE_MULTI)
1262					&& (conversation.getAccount() == account)) {
1263				conversation.resetMucOptions();
1264				joinMuc(conversation);
1265			}
1266		}
1267	}
1268
1269	public void joinMuc(Conversation conversation) {
1270		Account account = conversation.getAccount();
1271		account.pendingConferenceJoins.remove(conversation);
1272		account.pendingConferenceLeaves.remove(conversation);
1273		if (account.getStatus() == Account.State.ONLINE) {
1274			final String nick = conversation.getMucOptions().getProposedNick();
1275			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1276			if (joinJid == null) {
1277				return; //safety net
1278			}
1279			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1280			PresencePacket packet = new PresencePacket();
1281			packet.setFrom(conversation.getAccount().getJid());
1282			packet.setTo(joinJid);
1283			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1284			if (conversation.getMucOptions().getPassword() != null) {
1285				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1286			}
1287			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1288			String sig = account.getPgpSignature();
1289			if (sig != null) {
1290				packet.addChild("status").setContent("online");
1291				packet.addChild("x", "jabber:x:signed").setContent(sig);
1292			}
1293			sendPresencePacket(account, packet);
1294			if (!joinJid.equals(conversation.getContactJid())) {
1295				conversation.setContactJid(joinJid);
1296				databaseBackend.updateConversation(conversation);
1297			}
1298		} else {
1299			account.pendingConferenceJoins.add(conversation);
1300		}
1301	}
1302
1303	public void providePasswordForMuc(Conversation conversation, String password) {
1304		if (conversation.getMode() == Conversation.MODE_MULTI) {
1305			conversation.getMucOptions().setPassword(password);
1306			if (conversation.getBookmark() != null) {
1307				conversation.getBookmark().setAutojoin(true);
1308				pushBookmarks(conversation.getAccount());
1309			}
1310			databaseBackend.updateConversation(conversation);
1311			joinMuc(conversation);
1312		}
1313	}
1314
1315	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1316		final MucOptions options = conversation.getMucOptions();
1317		final Jid joinJid = options.createJoinJid(nick);
1318		if (options.online()) {
1319			Account account = conversation.getAccount();
1320			options.setOnRenameListener(new OnRenameListener() {
1321
1322				@Override
1323				public void onSuccess() {
1324					conversation.setContactJid(joinJid);
1325					databaseBackend.updateConversation(conversation);
1326					Bookmark bookmark = conversation.getBookmark();
1327					if (bookmark != null) {
1328						bookmark.setNick(nick);
1329						pushBookmarks(bookmark.getAccount());
1330					}
1331					callback.success(conversation);
1332				}
1333
1334				@Override
1335				public void onFailure() {
1336					callback.error(R.string.nick_in_use, conversation);
1337				}
1338			});
1339
1340			PresencePacket packet = new PresencePacket();
1341			packet.setTo(joinJid);
1342			packet.setFrom(conversation.getAccount().getJid());
1343
1344			String sig = account.getPgpSignature();
1345			if (sig != null) {
1346				packet.addChild("status").setContent("online");
1347				packet.addChild("x", "jabber:x:signed").setContent(sig);
1348			}
1349			sendPresencePacket(account, packet);
1350		} else {
1351			conversation.setContactJid(joinJid);
1352			databaseBackend.updateConversation(conversation);
1353			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1354				Bookmark bookmark = conversation.getBookmark();
1355				if (bookmark != null) {
1356					bookmark.setNick(nick);
1357					pushBookmarks(bookmark.getAccount());
1358				}
1359				joinMuc(conversation);
1360			}
1361		}
1362	}
1363
1364	public void leaveMuc(Conversation conversation) {
1365		Account account = conversation.getAccount();
1366		account.pendingConferenceJoins.remove(conversation);
1367		account.pendingConferenceLeaves.remove(conversation);
1368		if (account.getStatus() == Account.State.ONLINE) {
1369			PresencePacket packet = new PresencePacket();
1370			packet.setTo(conversation.getContactJid());
1371			packet.setFrom(conversation.getAccount().getJid());
1372			packet.setAttribute("type", "unavailable");
1373			sendPresencePacket(conversation.getAccount(), packet);
1374			conversation.getMucOptions().setOffline();
1375			conversation.deregisterWithBookmark();
1376			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1377					+ ": leaving muc " + conversation.getContactJid());
1378		} else {
1379			account.pendingConferenceLeaves.add(conversation);
1380		}
1381	}
1382
1383	private String findConferenceServer(final Account account) {
1384		String server;
1385		if (account.getXmppConnection() != null) {
1386			server = account.getXmppConnection().getMucServer();
1387			if (server != null) {
1388				return server;
1389			}
1390		}
1391		for(Account other : getAccounts()) {
1392			if (other != account && other.getXmppConnection() != null) {
1393				server = other.getXmppConnection().getMucServer();
1394				if (server != null) {
1395					return server;
1396				}
1397			}
1398		}
1399		return null;
1400	}
1401
1402	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1403		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1404		if (account.getStatus() == Account.State.ONLINE) {
1405			try {
1406				String server = findConferenceServer(account);
1407				if (server == null) {
1408					if (callback != null) {
1409						callback.error(R.string.no_conference_server_found,null);
1410					}
1411					return;
1412				}
1413				String name = new BigInteger(75,getRNG()).toString(32);
1414				Jid jid = Jid.fromParts(name,server,null);
1415				final Conversation conversation = findOrCreateConversation(account, jid, true);
1416				joinMuc(conversation);
1417				Bundle options = new Bundle();
1418				options.putString("muc#roomconfig_persistentroom", "1");
1419				options.putString("muc#roomconfig_membersonly", "1");
1420				options.putString("muc#roomconfig_publicroom", "0");
1421				options.putString("muc#roomconfig_whois", "anyone");
1422				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1423					@Override
1424					public void onPushSucceeded() {
1425						for(Jid invite : jids) {
1426							invite(conversation,invite);
1427						}
1428						if (callback != null) {
1429							callback.success(conversation);
1430						}
1431					}
1432
1433					@Override
1434					public void onPushFailed() {
1435						if (callback != null) {
1436							callback.error(R.string.conference_creation_failed, conversation);
1437						}
1438					}
1439				});
1440
1441			} catch (InvalidJidException e) {
1442				if (callback != null) {
1443					callback.error(R.string.conference_creation_failed, null);
1444				}
1445			}
1446		} else {
1447			if (callback != null) {
1448				callback.error(R.string.not_connected_try_again,null);
1449			}
1450		}
1451	}
1452
1453	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1454		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1455		request.setTo(conversation.getContactJid().toBareJid());
1456		request.query("http://jabber.org/protocol/muc#owner");
1457		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1458			@Override
1459			public void onIqPacketReceived(Account account, IqPacket packet) {
1460				if (packet.getType() != IqPacket.TYPE_ERROR) {
1461					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1462					for (Field field : data.getFields()) {
1463						if (options.containsKey(field.getName())) {
1464							field.setValue(options.getString(field.getName()));
1465						}
1466					}
1467					data.submit();
1468					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1469					set.setTo(conversation.getContactJid().toBareJid());
1470					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1471					sendIqPacket(account, set, new OnIqPacketReceived() {
1472						@Override
1473						public void onIqPacketReceived(Account account, IqPacket packet) {
1474							if (packet.getType() == IqPacket.TYPE_RESULT) {
1475								if (callback != null) {
1476									callback.onPushSucceeded();
1477								}
1478							} else {
1479								if (callback != null) {
1480									callback.onPushFailed();
1481								}
1482							}
1483						}
1484					});
1485				} else {
1486					if (callback != null) {
1487						callback.onPushFailed();
1488					}
1489				}
1490			}
1491		});
1492	}
1493
1494	public void disconnect(Account account, boolean force) {
1495		if ((account.getStatus() == Account.State.ONLINE)
1496				|| (account.getStatus() == Account.State.DISABLED)) {
1497			if (!force) {
1498				List<Conversation> conversations = getConversations();
1499				for (Conversation conversation : conversations) {
1500					if (conversation.getAccount() == account) {
1501						if (conversation.getMode() == Conversation.MODE_MULTI) {
1502							leaveMuc(conversation);
1503						} else {
1504							if (conversation.endOtrIfNeeded()) {
1505								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1506										+ ": ended otr session with "
1507										+ conversation.getContactJid());
1508							}
1509						}
1510					}
1511				}
1512			}
1513			account.getXmppConnection().disconnect(force);
1514				}
1515	}
1516
1517	@Override
1518	public IBinder onBind(Intent intent) {
1519		return mBinder;
1520	}
1521
1522	public void updateMessage(Message message) {
1523		databaseBackend.updateMessage(message);
1524		updateConversationUi();
1525	}
1526
1527	protected void syncDirtyContacts(Account account) {
1528		for (Contact contact : account.getRoster().getContacts()) {
1529			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1530				pushContactToServer(contact);
1531			}
1532			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1533				deleteContactOnServer(contact);
1534			}
1535		}
1536	}
1537
1538	public void createContact(Contact contact) {
1539		SharedPreferences sharedPref = getPreferences();
1540		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1541		if (autoGrant) {
1542			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1543			contact.setOption(Contact.Options.ASKING);
1544		}
1545		pushContactToServer(contact);
1546	}
1547
1548	public void onOtrSessionEstablished(Conversation conversation) {
1549		final Account account = conversation.getAccount();
1550		final Session otrSession = conversation.getOtrSession();
1551		Log.d(Config.LOGTAG,
1552				account.getJid().toBareJid() + " otr session established with "
1553						+ conversation.getContactJid() + "/"
1554						+ otrSession.getSessionID().getUserID());
1555		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1556
1557			@Override
1558			public void onMessageFound(Message message) {
1559				SessionID id = otrSession.getSessionID();
1560				try {
1561					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1562				} catch (InvalidJidException e) {
1563					return;
1564				}
1565				if (message.getType() == Message.TYPE_TEXT) {
1566					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1567					if (outPacket != null) {
1568						message.setStatus(Message.STATUS_SEND);
1569						databaseBackend.updateMessage(message);
1570						sendMessagePacket(account, outPacket);
1571					}
1572				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1573					mJingleConnectionManager.createNewConnection(message);
1574				}
1575				updateConversationUi();
1576			}
1577		});
1578	}
1579
1580	public boolean renewSymmetricKey(Conversation conversation) {
1581		Account account = conversation.getAccount();
1582		byte[] symmetricKey = new byte[32];
1583		this.mRandom.nextBytes(symmetricKey);
1584		Session otrSession = conversation.getOtrSession();
1585		if (otrSession != null) {
1586			MessagePacket packet = new MessagePacket();
1587			packet.setType(MessagePacket.TYPE_CHAT);
1588			packet.setFrom(account.getJid());
1589			packet.addChild("private", "urn:xmpp:carbons:2");
1590			packet.addChild("no-copy", "urn:xmpp:hints");
1591			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1592					+ otrSession.getSessionID().getUserID());
1593			try {
1594				packet.setBody(otrSession
1595						.transformSending(CryptoHelper.FILETRANSFER
1596							+ CryptoHelper.bytesToHex(symmetricKey)));
1597				sendMessagePacket(account, packet);
1598				conversation.setSymmetricKey(symmetricKey);
1599				return true;
1600			} catch (OtrException e) {
1601				return false;
1602			}
1603		}
1604		return false;
1605	}
1606
1607	public void pushContactToServer(Contact contact) {
1608		contact.resetOption(Contact.Options.DIRTY_DELETE);
1609		contact.setOption(Contact.Options.DIRTY_PUSH);
1610		Account account = contact.getAccount();
1611		if (account.getStatus() == Account.State.ONLINE) {
1612			boolean ask = contact.getOption(Contact.Options.ASKING);
1613			boolean sendUpdates = contact
1614				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1615				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1616			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1617			iq.query("jabber:iq:roster").addChild(contact.asElement());
1618			account.getXmppConnection().sendIqPacket(iq, null);
1619			if (sendUpdates) {
1620				sendPresencePacket(account,
1621						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1622			}
1623			if (ask) {
1624				sendPresencePacket(account,
1625						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1626			}
1627		}
1628	}
1629
1630	public void publishAvatar(Account account, Uri image,
1631			final UiCallback<Avatar> callback) {
1632		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1633		final int size = Config.AVATAR_SIZE;
1634		final Avatar avatar = getFileBackend()
1635			.getPepAvatar(image, size, format);
1636		if (avatar != null) {
1637			avatar.height = size;
1638			avatar.width = size;
1639			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1640				avatar.type = "image/webp";
1641			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1642				avatar.type = "image/jpeg";
1643			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1644				avatar.type = "image/png";
1645			}
1646			if (!getFileBackend().save(avatar)) {
1647				callback.error(R.string.error_saving_avatar, avatar);
1648				return;
1649			}
1650			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1651			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1652
1653				@Override
1654				public void onIqPacketReceived(Account account, IqPacket result) {
1655					if (result.getType() == IqPacket.TYPE_RESULT) {
1656						IqPacket packet = XmppConnectionService.this.mIqGenerator
1657							.publishAvatarMetadata(avatar);
1658						sendIqPacket(account, packet, new OnIqPacketReceived() {
1659
1660							@Override
1661							public void onIqPacketReceived(Account account,
1662									IqPacket result) {
1663								if (result.getType() == IqPacket.TYPE_RESULT) {
1664									if (account.setAvatar(avatar.getFilename())) {
1665										databaseBackend.updateAccount(account);
1666									}
1667									callback.success(avatar);
1668								} else {
1669									callback.error(
1670											R.string.error_publish_avatar_server_reject,
1671											avatar);
1672								}
1673							}
1674						});
1675					} else {
1676						callback.error(
1677								R.string.error_publish_avatar_server_reject,
1678								avatar);
1679					}
1680				}
1681			});
1682		} else {
1683			callback.error(R.string.error_publish_avatar_converting, null);
1684		}
1685	}
1686
1687	public void fetchAvatar(Account account, Avatar avatar) {
1688		fetchAvatar(account, avatar, null);
1689	}
1690
1691	public void fetchAvatar(Account account, final Avatar avatar,
1692			final UiCallback<Avatar> callback) {
1693		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1694		sendIqPacket(account, packet, new OnIqPacketReceived() {
1695
1696			@Override
1697			public void onIqPacketReceived(Account account, IqPacket result) {
1698				final String ERROR = account.getJid().toBareJid()
1699						+ ": fetching avatar for " + avatar.owner + " failed ";
1700				if (result.getType() == IqPacket.TYPE_RESULT) {
1701					avatar.image = mIqParser.avatarData(result);
1702					if (avatar.image != null) {
1703						if (getFileBackend().save(avatar)) {
1704							if (account.getJid().toBareJid().equals(avatar.owner)) {
1705								if (account.setAvatar(avatar.getFilename())) {
1706									databaseBackend.updateAccount(account);
1707								}
1708								getAvatarService().clear(account);
1709								updateConversationUi();
1710								updateAccountUi();
1711							} else {
1712								Contact contact = account.getRoster()
1713										.getContact(avatar.owner);
1714								contact.setAvatar(avatar.getFilename());
1715								getAvatarService().clear(contact);
1716								updateConversationUi();
1717								updateRosterUi();
1718							}
1719							if (callback != null) {
1720								callback.success(avatar);
1721							}
1722							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1723									+ ": succesfully fetched avatar for "
1724									+ avatar.owner);
1725							return;
1726						}
1727					} else {
1728
1729						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1730					}
1731				} else {
1732					Element error = result.findChild("error");
1733					if (error == null) {
1734						Log.d(Config.LOGTAG, ERROR + "(server error)");
1735					} else {
1736						Log.d(Config.LOGTAG, ERROR + error.toString());
1737					}
1738				}
1739				if (callback != null) {
1740					callback.error(0, null);
1741				}
1742
1743			}
1744		});
1745	}
1746
1747	public void checkForAvatar(Account account,
1748			final UiCallback<Avatar> callback) {
1749		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1750		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1751
1752			@Override
1753			public void onIqPacketReceived(Account account, IqPacket packet) {
1754				if (packet.getType() == IqPacket.TYPE_RESULT) {
1755					Element pubsub = packet.findChild("pubsub",
1756							"http://jabber.org/protocol/pubsub");
1757					if (pubsub != null) {
1758						Element items = pubsub.findChild("items");
1759						if (items != null) {
1760							Avatar avatar = Avatar.parseMetadata(items);
1761							if (avatar != null) {
1762								avatar.owner = account.getJid().toBareJid();
1763								if (fileBackend.isAvatarCached(avatar)) {
1764									if (account.setAvatar(avatar.getFilename())) {
1765										databaseBackend.updateAccount(account);
1766									}
1767									getAvatarService().clear(account);
1768									callback.success(avatar);
1769								} else {
1770									fetchAvatar(account, avatar, callback);
1771								}
1772								return;
1773							}
1774						}
1775					}
1776				}
1777				callback.error(0, null);
1778			}
1779		});
1780	}
1781
1782	public void deleteContactOnServer(Contact contact) {
1783		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1784		contact.resetOption(Contact.Options.DIRTY_PUSH);
1785		contact.setOption(Contact.Options.DIRTY_DELETE);
1786		Account account = contact.getAccount();
1787		if (account.getStatus() == Account.State.ONLINE) {
1788			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1789			Element item = iq.query("jabber:iq:roster").addChild("item");
1790			item.setAttribute("jid", contact.getJid().toString());
1791			item.setAttribute("subscription", "remove");
1792			account.getXmppConnection().sendIqPacket(iq, null);
1793		}
1794	}
1795
1796	public void updateConversation(Conversation conversation) {
1797		this.databaseBackend.updateConversation(conversation);
1798	}
1799
1800	public void reconnectAccount(final Account account, final boolean force) {
1801		new Thread(new Runnable() {
1802
1803			@Override
1804			public void run() {
1805				if (account.getXmppConnection() != null) {
1806					disconnect(account, force);
1807				}
1808				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1809					if (account.getXmppConnection() == null) {
1810						account.setXmppConnection(createConnection(account));
1811					}
1812					Thread thread = new Thread(account.getXmppConnection());
1813					thread.start();
1814					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1815							false);
1816				} else {
1817					account.getRoster().clearPresences();
1818					account.setXmppConnection(null);
1819				}
1820			}
1821		}).start();
1822	}
1823
1824	public void invite(Conversation conversation, Jid contact) {
1825		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1826		sendMessagePacket(conversation.getAccount(), packet);
1827	}
1828
1829	public void resetSendingToWaiting(Account account) {
1830		for (Conversation conversation : getConversations()) {
1831			if (conversation.getAccount() == account) {
1832				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1833
1834					@Override
1835					public void onMessageFound(Message message) {
1836						markMessage(message, Message.STATUS_WAITING);
1837					}
1838				});
1839			}
1840		}
1841	}
1842
1843	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1844			final int status) {
1845		if (uuid == null) {
1846			return false;
1847		} else {
1848			for (Conversation conversation : getConversations()) {
1849				if (conversation.getContactJid().equals(recipient)
1850						&& conversation.getAccount().equals(account)) {
1851					return markMessage(conversation, uuid, status);
1852						}
1853			}
1854			return false;
1855		}
1856	}
1857
1858	public boolean markMessage(Conversation conversation, String uuid,
1859			int status) {
1860		if (uuid == null) {
1861			return false;
1862		} else {
1863			Message message = conversation.findSentMessageWithUuid(uuid);
1864			if (message!=null) {
1865				markMessage(message,status);
1866				return true;
1867			} else {
1868				return false;
1869			}
1870		}
1871	}
1872
1873	public void markMessage(Message message, int status) {
1874		if (status == Message.STATUS_SEND_FAILED
1875				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1876					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1877			return;
1878					}
1879		message.setStatus(status);
1880		databaseBackend.updateMessage(message);
1881		updateConversationUi();
1882	}
1883
1884	public SharedPreferences getPreferences() {
1885		return PreferenceManager
1886			.getDefaultSharedPreferences(getApplicationContext());
1887	}
1888
1889	public boolean forceEncryption() {
1890		return getPreferences().getBoolean("force_encryption", false);
1891	}
1892
1893	public boolean confirmMessages() {
1894		return getPreferences().getBoolean("confirm_messages", true);
1895	}
1896
1897	public boolean saveEncryptedMessages() {
1898		return !getPreferences().getBoolean("dont_save_encrypted", false);
1899	}
1900
1901	public boolean indicateReceived() {
1902		return getPreferences().getBoolean("indicate_received", false);
1903	}
1904
1905	public void updateConversationUi() {
1906		if (mOnConversationUpdate != null) {
1907			mOnConversationUpdate.onConversationUpdate();
1908		}
1909	}
1910
1911	public void updateAccountUi() {
1912		if (mOnAccountUpdate != null) {
1913			mOnAccountUpdate.onAccountUpdate();
1914		}
1915	}
1916
1917	public void updateRosterUi() {
1918		if (mOnRosterUpdate != null) {
1919			mOnRosterUpdate.onRosterUpdate();
1920		}
1921	}
1922
1923	public void updateMucRosterUi() {
1924		if (mOnMucRosterUpdate != null) {
1925			mOnMucRosterUpdate.onMucRosterUpdate();
1926		}
1927	}
1928
1929	public Account findAccountByJid(final Jid accountJid) {
1930		for (Account account : this.accounts) {
1931			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1932				return account;
1933			}
1934		}
1935		return null;
1936	}
1937
1938	public Conversation findConversationByUuid(String uuid) {
1939		for (Conversation conversation : getConversations()) {
1940			if (conversation.getUuid().equals(uuid)) {
1941				return conversation;
1942			}
1943		}
1944		return null;
1945	}
1946
1947	public void markRead(Conversation conversation, boolean calledByUi) {
1948		mNotificationService.clear(conversation);
1949		final Message markable = conversation.getLatestMarkableMessage();
1950		conversation.markRead();
1951		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1952			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1953			Account account = conversation.getAccount();
1954			final Jid to = markable.getCounterpart();
1955			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1956			this.sendMessagePacket(conversation.getAccount(),packet);
1957		}
1958		if (!calledByUi) {
1959			updateConversationUi();
1960		}
1961	}
1962
1963	public SecureRandom getRNG() {
1964		return this.mRandom;
1965	}
1966
1967	public MemorizingTrustManager getMemorizingTrustManager() {
1968		return this.mMemorizingTrustManager;
1969	}
1970
1971	public PowerManager getPowerManager() {
1972		return this.pm;
1973	}
1974
1975	public LruCache<String, Bitmap> getBitmapCache() {
1976		return this.mBitmapCache;
1977	}
1978
1979	public void syncRosterToDisk(final Account account) {
1980		new Thread(new Runnable() {
1981
1982			@Override
1983			public void run() {
1984				databaseBackend.writeRoster(account.getRoster());
1985			}
1986		}).start();
1987
1988	}
1989
1990	public List<String> getKnownHosts() {
1991		List<String> hosts = new ArrayList<>();
1992		for (Account account : getAccounts()) {
1993			if (!hosts.contains(account.getServer().toString())) {
1994				hosts.add(account.getServer().toString());
1995			}
1996			for (Contact contact : account.getRoster().getContacts()) {
1997				if (contact.showInRoster()) {
1998					final String server = contact.getServer().toString();
1999					if (server != null && !hosts.contains(server)) {
2000						hosts.add(server);
2001					}
2002				}
2003			}
2004		}
2005		return hosts;
2006	}
2007
2008	public List<String> getKnownConferenceHosts() {
2009		ArrayList<String> mucServers = new ArrayList<>();
2010		for (Account account : accounts) {
2011			if (account.getXmppConnection() != null) {
2012				String server = account.getXmppConnection().getMucServer();
2013				if (server != null && !mucServers.contains(server)) {
2014					mucServers.add(server);
2015				}
2016			}
2017		}
2018		return mucServers;
2019	}
2020
2021	public void sendMessagePacket(Account account, MessagePacket packet) {
2022		XmppConnection connection = account.getXmppConnection();
2023		if (connection != null) {
2024			connection.sendMessagePacket(packet);
2025		}
2026	}
2027
2028	public void sendPresencePacket(Account account, PresencePacket packet) {
2029		XmppConnection connection = account.getXmppConnection();
2030		if (connection != null) {
2031			connection.sendPresencePacket(packet);
2032		}
2033	}
2034
2035	public void sendIqPacket(Account account, IqPacket packet,
2036			OnIqPacketReceived callback) {
2037		XmppConnection connection = account.getXmppConnection();
2038		if (connection != null) {
2039			connection.sendIqPacket(packet, callback);
2040		}
2041	}
2042
2043	public MessageGenerator getMessageGenerator() {
2044		return this.mMessageGenerator;
2045	}
2046
2047	public PresenceGenerator getPresenceGenerator() {
2048		return this.mPresenceGenerator;
2049	}
2050
2051	public IqGenerator getIqGenerator() {
2052		return this.mIqGenerator;
2053	}
2054
2055	public JingleConnectionManager getJingleConnectionManager() {
2056		return this.mJingleConnectionManager;
2057	}
2058
2059	public MessageArchiveService getMessageArchiveService() {
2060		return this.mMessageArchiveService;
2061	}
2062
2063	public List<Contact> findContacts(Jid jid) {
2064		ArrayList<Contact> contacts = new ArrayList<>();
2065		for (Account account : getAccounts()) {
2066			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2067				Contact contact = account.getRoster().getContactFromRoster(jid);
2068				if (contact != null) {
2069					contacts.add(contact);
2070				}
2071			}
2072		}
2073		return contacts;
2074	}
2075
2076	public NotificationService getNotificationService() {
2077		return this.mNotificationService;
2078	}
2079
2080	public HttpConnectionManager getHttpConnectionManager() {
2081		return this.mHttpConnectionManager;
2082	}
2083
2084	public void resendFailedMessages(Message message) {
2085		List<Message> messages = new ArrayList<>();
2086		Message current = message;
2087		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2088			messages.add(current);
2089			if (current.mergeable(current.next())) {
2090				current = current.next();
2091			} else {
2092				break;
2093			}
2094		}
2095		for (Message msg : messages) {
2096			markMessage(msg, Message.STATUS_WAITING);
2097			this.resendMessage(msg);
2098		}
2099	}
2100
2101	public void clearConversationHistory(final Conversation conversation) {
2102		conversation.clearMessages();
2103		new Thread(new Runnable() {
2104			@Override
2105			public void run() {
2106				databaseBackend.deleteMessagesInConversation(conversation);
2107			}
2108		}).start();
2109	}
2110
2111	public interface OnConversationUpdate {
2112		public void onConversationUpdate();
2113	}
2114
2115	public interface OnAccountUpdate {
2116		public void onAccountUpdate();
2117	}
2118
2119	public interface OnRosterUpdate {
2120		public void onRosterUpdate();
2121	}
2122
2123	public interface OnMucRosterUpdate {
2124		public void onMucRosterUpdate();
2125	}
2126
2127	private interface OnConferenceOptionsPushed {
2128		public void onPushSucceeded();
2129		public void onPushFailed();
2130	}
2131
2132	public class XmppConnectionBinder extends Binder {
2133		public XmppConnectionService getService() {
2134			return XmppConnectionService.this;
2135		}
2136	}
2137}