XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.io.FileNotFoundException;
  36import java.io.IOException;
  37import java.io.OutputStream;
  38import java.security.SecureRandom;
  39import java.text.SimpleDateFormat;
  40import java.util.ArrayList;
  41import java.util.Collections;
  42import java.util.Comparator;
  43import java.util.Date;
  44import java.util.Hashtable;
  45import java.util.List;
  46import java.util.Locale;
  47import java.util.TimeZone;
  48import java.util.concurrent.CopyOnWriteArrayList;
  49
  50import de.duenndns.ssl.MemorizingTrustManager;
  51import eu.siacs.conversations.Config;
  52import eu.siacs.conversations.R;
  53import eu.siacs.conversations.crypto.PgpEngine;
  54import eu.siacs.conversations.entities.Account;
  55import eu.siacs.conversations.entities.Bookmark;
  56import eu.siacs.conversations.entities.Contact;
  57import eu.siacs.conversations.entities.Conversation;
  58import eu.siacs.conversations.entities.Downloadable;
  59import eu.siacs.conversations.entities.DownloadableFile;
  60import eu.siacs.conversations.entities.DownloadablePlaceholder;
  61import eu.siacs.conversations.entities.Message;
  62import eu.siacs.conversations.entities.MucOptions;
  63import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  64import eu.siacs.conversations.entities.Presences;
  65import eu.siacs.conversations.generator.IqGenerator;
  66import eu.siacs.conversations.generator.MessageGenerator;
  67import eu.siacs.conversations.generator.PresenceGenerator;
  68import eu.siacs.conversations.http.HttpConnectionManager;
  69import eu.siacs.conversations.parser.IqParser;
  70import eu.siacs.conversations.parser.MessageParser;
  71import eu.siacs.conversations.parser.PresenceParser;
  72import eu.siacs.conversations.persistance.DatabaseBackend;
  73import eu.siacs.conversations.persistance.FileBackend;
  74import eu.siacs.conversations.ui.UiCallback;
  75import eu.siacs.conversations.utils.CryptoHelper;
  76import eu.siacs.conversations.utils.ExceptionHelper;
  77import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  78import eu.siacs.conversations.utils.PRNGFixes;
  79import eu.siacs.conversations.utils.PhoneHelper;
  80import eu.siacs.conversations.utils.UIHelper;
  81import eu.siacs.conversations.xml.Element;
  82import eu.siacs.conversations.xmpp.OnBindListener;
  83import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  84import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  85import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  86import eu.siacs.conversations.xmpp.OnStatusChanged;
  87import eu.siacs.conversations.xmpp.XmppConnection;
  88import eu.siacs.conversations.xmpp.forms.Data;
  89import eu.siacs.conversations.xmpp.forms.Field;
  90import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  91import eu.siacs.conversations.xmpp.jid.Jid;
  92import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  93import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  94import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  95import eu.siacs.conversations.xmpp.pep.Avatar;
  96import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  97import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  98import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  99
 100public class XmppConnectionService extends Service {
 101
 102	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 103	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 104	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 105	private ContentObserver contactObserver = new ContentObserver(null) {
 106		@Override
 107		public void onChange(boolean selfChange) {
 108			super.onChange(selfChange);
 109			Intent intent = new Intent(getApplicationContext(),
 110					XmppConnectionService.class);
 111			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 112			startService(intent);
 113		}
 114	};
 115	private final IBinder mBinder = new XmppConnectionBinder();
 116	public DatabaseBackend databaseBackend;
 117	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 118
 119		@Override
 120		public void onContactStatusChanged(Contact contact, boolean online) {
 121			Conversation conversation = find(getConversations(), contact);
 122			if (conversation != null) {
 123				if (online && contact.getPresences().size() > 1) {
 124					conversation.endOtrIfNeeded();
 125				} else {
 126					conversation.resetOtrSession();
 127				}
 128				if (online && (contact.getPresences().size() == 1)) {
 129					sendUnsendMessages(conversation);
 130				}
 131			}
 132		}
 133	};
 134	private FileBackend fileBackend = new FileBackend(this);
 135	private MemorizingTrustManager mMemorizingTrustManager;
 136	private NotificationService mNotificationService = new NotificationService(
 137			this);
 138	private MessageParser mMessageParser = new MessageParser(this);
 139	private PresenceParser mPresenceParser = new PresenceParser(this);
 140	private IqParser mIqParser = new IqParser(this);
 141	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 142	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 143	private List<Account> accounts;
 144	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 145	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 146			this);
 147	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 148			this);
 149	private AvatarService mAvatarService = new AvatarService(this);
 150	private OnConversationUpdate mOnConversationUpdate = null;
 151	private Integer convChangedListenerCount = 0;
 152	private OnAccountUpdate mOnAccountUpdate = null;
 153	private OnStatusChanged statusListener = new OnStatusChanged() {
 154
 155		@Override
 156		public void onStatusChanged(Account account) {
 157			XmppConnection connection = account.getXmppConnection();
 158			if (mOnAccountUpdate != null) {
 159				mOnAccountUpdate.onAccountUpdate();
 160			}
 161			if (account.getStatus() == Account.State.ONLINE) {
 162				for (Conversation conversation : account.pendingConferenceLeaves) {
 163					leaveMuc(conversation);
 164				}
 165				for (Conversation conversation : account.pendingConferenceJoins) {
 166					joinMuc(conversation);
 167				}
 168				mJingleConnectionManager.cancelInTransmission();
 169				List<Conversation> conversations = getConversations();
 170				for (Conversation conversation : conversations) {
 171					if (conversation.getAccount() == account) {
 172						conversation.startOtrIfNeeded();
 173						sendUnsendMessages(conversation);
 174					}
 175				}
 176				if (connection != null && connection.getFeatures().csi()) {
 177					if (checkListeners()) {
 178						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 179								+ " sending csi//inactive");
 180						connection.sendInactive();
 181					} else {
 182						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 183								+ " sending csi//active");
 184						connection.sendActive();
 185					}
 186				}
 187				syncDirtyContacts(account);
 188				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 189			} else if (account.getStatus() == Account.State.OFFLINE) {
 190				resetSendingToWaiting(account);
 191				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 192					int timeToReconnect = mRandom.nextInt(50) + 10;
 193					scheduleWakeupCall(timeToReconnect, false);
 194				}
 195			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 196				databaseBackend.updateAccount(account);
 197				reconnectAccount(account, true);
 198			} else if ((account.getStatus() != Account.State.CONNECTING)
 199					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 200				if (connection != null) {
 201					int next = connection.getTimeToNextAttempt();
 202					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 203							+ ": error connecting account. try again in "
 204							+ next + "s for the "
 205							+ (connection.getAttempt() + 1) + " time");
 206					scheduleWakeupCall((int) (next * 1.2), false);
 207				}
 208					}
 209			getNotificationService().updateErrorNotification();
 210		}
 211	};
 212	private Integer accountChangedListenerCount = 0;
 213	private OnRosterUpdate mOnRosterUpdate = null;
 214	private Integer rosterChangedListenerCount = 0;
 215	private SecureRandom mRandom;
 216	private FileObserver fileObserver = new FileObserver(
 217			FileBackend.getConversationsImageDirectory()) {
 218
 219		@Override
 220		public void onEvent(int event, String path) {
 221			if (event == FileObserver.DELETE) {
 222				markFileDeleted(path.split("\\.")[0]);
 223			}
 224		}
 225	};
 226	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 227
 228		@Override
 229		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 230			mJingleConnectionManager.deliverPacket(account, packet);
 231		}
 232	};
 233
 234	private OpenPgpServiceConnection pgpServiceConnection;
 235	private PgpEngine mPgpEngine = null;
 236	private Intent pingIntent;
 237	private PendingIntent pendingPingIntent = null;
 238	private WakeLock wakeLock;
 239	private PowerManager pm;
 240	private OnBindListener mOnBindListener = new OnBindListener() {
 241
 242		@Override
 243		public void onBind(final Account account) {
 244			account.getRoster().clearPresences();
 245			account.clearPresences(); // self presences
 246			account.pendingConferenceJoins.clear();
 247			account.pendingConferenceLeaves.clear();
 248			fetchRosterFromServer(account);
 249			fetchBookmarks(account);
 250			sendPresencePacket(account,
 251					mPresenceGenerator.sendPresence(account));
 252			connectMultiModeConversations(account);
 253			updateConversationUi();
 254		}
 255	};
 256
 257	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 258
 259		@Override
 260		public void onMessageAcknowledged(Account account, String uuid) {
 261			for (Conversation conversation : getConversations()) {
 262				if (conversation.getAccount() == account) {
 263					for (Message message : conversation.getMessages()) {
 264						if ((message.getStatus() == Message.STATUS_UNSEND || message
 265									.getStatus() == Message.STATUS_WAITING)
 266								&& message.getUuid().equals(uuid)) {
 267							markMessage(message, Message.STATUS_SEND);
 268							return;
 269								}
 270					}
 271				}
 272			}
 273		}
 274	};
 275	private LruCache<String, Bitmap> mBitmapCache;
 276	private OnRenameListener renameListener = null;
 277	private IqGenerator mIqGenerator = new IqGenerator(this);
 278
 279	public PgpEngine getPgpEngine() {
 280		if (pgpServiceConnection.isBound()) {
 281			if (this.mPgpEngine == null) {
 282				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 283							getApplicationContext(),
 284							pgpServiceConnection.getService()), this);
 285			}
 286			return mPgpEngine;
 287		} else {
 288			return null;
 289		}
 290
 291	}
 292
 293	public FileBackend getFileBackend() {
 294		return this.fileBackend;
 295	}
 296
 297	public AvatarService getAvatarService() {
 298		return this.mAvatarService;
 299	}
 300
 301	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 302		final Message message;
 303		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 304			message = new Message(conversation, "",
 305					Message.ENCRYPTION_DECRYPTED);
 306		} else {
 307			message = new Message(conversation, "",
 308					conversation.getNextEncryption(forceEncryption()));
 309		}
 310		message.setCounterpart(conversation.getNextCounterpart());
 311		message.setType(Message.TYPE_FILE);
 312		message.setStatus(Message.STATUS_OFFERED);
 313		String path = getFileBackend().getOriginalPath(uri);
 314		if (path!=null) {
 315			message.setRelativeFilePath(path);
 316			getFileBackend().updateFileParams(message);
 317			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 318				getPgpEngine().encrypt(message, callback);
 319			} else {
 320				callback.success(message);
 321			}
 322		} else {
 323			new Thread(new Runnable() {
 324				@Override
 325				public void run() {
 326					try {
 327						getFileBackend().copyFileToPrivateStorage(message, uri);
 328						getFileBackend().updateFileParams(message);
 329						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 330							getPgpEngine().encrypt(message, callback);
 331						} else {
 332							callback.success(message);
 333						}
 334					} catch (FileBackend.FileCopyException e) {
 335						callback.error(e.getResId(),message);
 336					}
 337				}
 338			}).start();
 339
 340		}
 341	}
 342
 343	public void attachImageToConversation(final Conversation conversation,
 344			final Uri uri, final UiCallback<Message> callback) {
 345		final Message message;
 346		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 347			message = new Message(conversation, "",
 348					Message.ENCRYPTION_DECRYPTED);
 349		} else {
 350			message = new Message(conversation, "",
 351					conversation.getNextEncryption(forceEncryption()));
 352		}
 353		message.setCounterpart(conversation.getNextCounterpart());
 354		message.setType(Message.TYPE_IMAGE);
 355		message.setStatus(Message.STATUS_OFFERED);
 356		new Thread(new Runnable() {
 357
 358			@Override
 359			public void run() {
 360				try {
 361					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 362					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 363						getPgpEngine().encrypt(message, callback);
 364					} else {
 365						callback.success(message);
 366					}
 367				} catch (FileBackend.FileCopyException e) {
 368					callback.error(e.getResId(), message);
 369				}
 370			}
 371		}).start();
 372	}
 373
 374	public Conversation find(Bookmark bookmark) {
 375		return find(bookmark.getAccount(), bookmark.getJid());
 376	}
 377
 378	public Conversation find(final Account account, final Jid jid) {
 379		return find(getConversations(), account, jid);
 380	}
 381
 382	@Override
 383	public int onStartCommand(Intent intent, int flags, int startId) {
 384		if (intent != null && intent.getAction() != null) {
 385			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 386				mergePhoneContactsWithRoster();
 387				return START_STICKY;
 388			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 389				logoutAndSave();
 390				return START_NOT_STICKY;
 391			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 392				mNotificationService.clear();
 393			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 394				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 395				toggleForegroundService();
 396			}
 397		}
 398		this.wakeLock.acquire();
 399
 400		for (Account account : accounts) {
 401			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 402				if (!hasInternetConnection()) {
 403					account.setStatus(Account.State.NO_INTERNET);
 404					if (statusListener != null) {
 405						statusListener.onStatusChanged(account);
 406					}
 407				} else {
 408					if (account.getStatus() == Account.State.NO_INTERNET) {
 409						account.setStatus(Account.State.OFFLINE);
 410						if (statusListener != null) {
 411							statusListener.onStatusChanged(account);
 412						}
 413					}
 414					if (account.getStatus() == Account.State.ONLINE) {
 415						long lastReceived = account.getXmppConnection()
 416							.getLastPacketReceived();
 417						long lastSent = account.getXmppConnection()
 418							.getLastPingSent();
 419						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 420							Log.d(Config.LOGTAG, account.getJid()
 421									+ ": ping timeout");
 422							this.reconnectAccount(account, true);
 423						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 424							account.getXmppConnection().sendPing();
 425							this.scheduleWakeupCall(2, false);
 426						}
 427					} else if (account.getStatus() == Account.State.OFFLINE) {
 428						if (account.getXmppConnection() == null) {
 429							account.setXmppConnection(this
 430									.createConnection(account));
 431						}
 432						new Thread(account.getXmppConnection()).start();
 433					} else if ((account.getStatus() == Account.State.CONNECTING)
 434							&& ((SystemClock.elapsedRealtime() - account
 435									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 436						Log.d(Config.LOGTAG, account.getJid()
 437								+ ": time out during connect reconnecting");
 438						reconnectAccount(account, true);
 439					} else {
 440						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 441							reconnectAccount(account, true);
 442						}
 443					}
 444					// in any case. reschedule wakup call
 445					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 446				}
 447				if (mOnAccountUpdate != null) {
 448					mOnAccountUpdate.onAccountUpdate();
 449				}
 450			}
 451		}
 452		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 453			if (!pm.isScreenOn()) {
 454			removeStaleListeners();
 455			}*/
 456		if (wakeLock.isHeld()) {
 457			try {
 458				wakeLock.release();
 459			} catch (final RuntimeException ignored) {
 460			}
 461		}
 462		return START_STICKY;
 463	}
 464
 465	public boolean hasInternetConnection() {
 466		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 467			.getSystemService(Context.CONNECTIVITY_SERVICE);
 468		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 469		return activeNetwork != null && activeNetwork.isConnected();
 470	}
 471
 472	@SuppressLint("TrulyRandom")
 473	@Override
 474	public void onCreate() {
 475		ExceptionHelper.init(getApplicationContext());
 476		PRNGFixes.apply();
 477		this.mRandom = new SecureRandom();
 478		this.mMemorizingTrustManager = new MemorizingTrustManager(
 479				getApplicationContext());
 480
 481		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 482		int cacheSize = maxMemory / 8;
 483		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 484			@Override
 485			protected int sizeOf(String key, Bitmap bitmap) {
 486				return bitmap.getByteCount() / 1024;
 487			}
 488		};
 489
 490		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 491		this.accounts = databaseBackend.getAccounts();
 492
 493		for (Account account : this.accounts) {
 494			account.initOtrEngine(this);
 495			this.databaseBackend.readRoster(account.getRoster());
 496		}
 497		initConversations();
 498		this.mergePhoneContactsWithRoster();
 499
 500		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 501		this.fileObserver.startWatching();
 502		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 503		this.pgpServiceConnection.bindToService();
 504
 505		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 506		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 507		toggleForegroundService();
 508	}
 509
 510	public void toggleForegroundService() {
 511		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 512			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 513		} else {
 514			stopForeground(true);
 515		}
 516	}
 517
 518	@Override
 519	public void onTaskRemoved(Intent rootIntent) {
 520		super.onTaskRemoved(rootIntent);
 521		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 522			this.logoutAndSave();
 523		}
 524	}
 525
 526	private void logoutAndSave() {
 527		for (Account account : accounts) {
 528			databaseBackend.writeRoster(account.getRoster());
 529			if (account.getXmppConnection() != null) {
 530				disconnect(account, false);
 531			}
 532		}
 533		Context context = getApplicationContext();
 534		AlarmManager alarmManager = (AlarmManager) context
 535			.getSystemService(Context.ALARM_SERVICE);
 536		Intent intent = new Intent(context, EventReceiver.class);
 537		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 538		Log.d(Config.LOGTAG, "good bye");
 539		stopSelf();
 540	}
 541
 542	protected void scheduleWakeupCall(int seconds, boolean ping) {
 543		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 544		Context context = getApplicationContext();
 545		AlarmManager alarmManager = (AlarmManager) context
 546			.getSystemService(Context.ALARM_SERVICE);
 547
 548		if (ping) {
 549			if (this.pingIntent == null) {
 550				this.pingIntent = new Intent(context, EventReceiver.class);
 551				this.pingIntent.setAction("ping");
 552				this.pingIntent.putExtra("time", timeToWake);
 553				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 554						this.pingIntent, 0);
 555				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 556						timeToWake, pendingPingIntent);
 557			} else {
 558				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 559				if (scheduledTime < SystemClock.elapsedRealtime()
 560						|| (scheduledTime > timeToWake)) {
 561					this.pingIntent.putExtra("time", timeToWake);
 562					alarmManager.cancel(this.pendingPingIntent);
 563					this.pendingPingIntent = PendingIntent.getBroadcast(
 564							context, 0, this.pingIntent, 0);
 565					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 566							timeToWake, pendingPingIntent);
 567						}
 568			}
 569		} else {
 570			Intent intent = new Intent(context, EventReceiver.class);
 571			intent.setAction("ping_check");
 572			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 573					intent, 0);
 574			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 575					alarmIntent);
 576		}
 577
 578	}
 579
 580	public XmppConnection createConnection(Account account) {
 581		SharedPreferences sharedPref = getPreferences();
 582		account.setResource(sharedPref.getString("resource", "mobile")
 583				.toLowerCase(Locale.getDefault()));
 584		XmppConnection connection = new XmppConnection(account, this);
 585		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 586		connection.setOnStatusChangedListener(this.statusListener);
 587		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 588		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 589		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 590		connection.setOnBindListener(this.mOnBindListener);
 591		connection
 592			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 593		return connection;
 594	}
 595
 596	public void sendMessage(Message message) {
 597		Account account = message.getConversation().getAccount();
 598		account.deactivateGracePeriod();
 599		Conversation conv = message.getConversation();
 600		MessagePacket packet = null;
 601		boolean saveInDb = true;
 602		boolean send = false;
 603		if (account.getStatus() == Account.State.ONLINE
 604				&& account.getXmppConnection() != null) {
 605			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 606				if (message.getCounterpart() != null) {
 607					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 608						if (!conv.hasValidOtrSession()) {
 609							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 610							message.setStatus(Message.STATUS_WAITING);
 611						} else if (conv.hasValidOtrSession()
 612								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 613							mJingleConnectionManager
 614								.createNewConnection(message);
 615								}
 616					} else {
 617						mJingleConnectionManager.createNewConnection(message);
 618					}
 619				} else {
 620					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 621						conv.startOtrIfNeeded();
 622					}
 623					message.setStatus(Message.STATUS_WAITING);
 624				}
 625			} else {
 626				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 627					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 628						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 629						message.setStatus(Message.STATUS_WAITING);
 630					} else if (conv.hasValidOtrSession()) {
 631						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 632							packet = mMessageGenerator.generateOtrChat(message);
 633							send = true;
 634						} else {
 635							message.setStatus(Message.STATUS_WAITING);
 636							conv.startOtrIfNeeded();
 637						}
 638					} else {
 639						message.setStatus(Message.STATUS_WAITING);
 640					}
 641				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 642					message.getConversation().endOtrIfNeeded();
 643					failWaitingOtrMessages(message.getConversation());
 644					packet = mMessageGenerator.generatePgpChat(message);
 645					send = true;
 646				} else {
 647					message.getConversation().endOtrIfNeeded();
 648					failWaitingOtrMessages(message.getConversation());
 649					packet = mMessageGenerator.generateChat(message);
 650					send = true;
 651				}
 652			}
 653			if (!account.getXmppConnection().getFeatures().sm()
 654					&& conv.getMode() != Conversation.MODE_MULTI) {
 655				message.setStatus(Message.STATUS_SEND);
 656					}
 657		} else {
 658			message.setStatus(Message.STATUS_WAITING);
 659			if (message.getType() == Message.TYPE_TEXT) {
 660				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 661					String pgpBody = message.getEncryptedBody();
 662					String decryptedBody = message.getBody();
 663					message.setBody(pgpBody);
 664					message.setEncryption(Message.ENCRYPTION_PGP);
 665					databaseBackend.createMessage(message);
 666					saveInDb = false;
 667					message.setBody(decryptedBody);
 668					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 669				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 670					if (!conv.hasValidOtrSession()
 671							&& message.getCounterpart() != null) {
 672						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 673							}
 674				}
 675			}
 676
 677		}
 678		conv.add(message);
 679		if (saveInDb) {
 680			if (message.getEncryption() == Message.ENCRYPTION_NONE
 681					|| saveEncryptedMessages()) {
 682				databaseBackend.createMessage(message);
 683					}
 684		}
 685		if ((send) && (packet != null)) {
 686			sendMessagePacket(account, packet);
 687		}
 688		updateConversationUi();
 689	}
 690
 691	private void sendUnsendMessages(Conversation conversation) {
 692		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 693			int status = conversation.getMessages().get(i).getStatus();
 694			if (status == Message.STATUS_WAITING) {
 695				resendMessage(conversation.getMessages().get(i));
 696			}
 697		}
 698	}
 699
 700	private void resendMessage(Message message) {
 701		Account account = message.getConversation().getAccount();
 702		MessagePacket packet = null;
 703		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 704			Presences presences = message.getConversation().getContact()
 705				.getPresences();
 706			if (!message.getConversation().hasValidOtrSession()) {
 707				if ((message.getCounterpart() != null)
 708						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 709					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 710				} else {
 711					if (presences.size() == 1) {
 712						String presence = presences.asStringArray()[0];
 713						message.getConversation().startOtrSession(presence, true);
 714					}
 715				}
 716			} else {
 717				if (message.getConversation().getOtrSession()
 718						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 719					try {
 720						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 721						if (message.getType() == Message.TYPE_TEXT) {
 722							packet = mMessageGenerator.generateOtrChat(message,
 723									true);
 724						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 725							mJingleConnectionManager.createNewConnection(message);
 726						}
 727					} catch (InvalidJidException e) {
 728
 729					}
 730						}
 731			}
 732		} else if (message.getType() == Message.TYPE_TEXT) {
 733			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 734				packet = mMessageGenerator.generateChat(message, true);
 735			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 736					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 737				packet = mMessageGenerator.generatePgpChat(message, true);
 738					}
 739		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 740			Contact contact = message.getConversation().getContact();
 741			Presences presences = contact.getPresences();
 742			if ((message.getCounterpart() != null)
 743					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 744				markMessage(message, Message.STATUS_OFFERED);
 745				mJingleConnectionManager.createNewConnection(message);
 746			} else {
 747				if (presences.size() == 1) {
 748					String presence = presences.asStringArray()[0];
 749					try {
 750						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 751					} catch (InvalidJidException e) {
 752						return;
 753					}
 754					markMessage(message, Message.STATUS_OFFERED);
 755					mJingleConnectionManager.createNewConnection(message);
 756				}
 757			}
 758		}
 759		if (packet != null) {
 760			if (!account.getXmppConnection().getFeatures().sm()
 761					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 762				markMessage(message, Message.STATUS_SEND);
 763			} else {
 764				markMessage(message, Message.STATUS_UNSEND);
 765			}
 766			sendMessagePacket(account, packet);
 767		}
 768	}
 769
 770	public void fetchRosterFromServer(Account account) {
 771		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 772		if (!"".equals(account.getRosterVersion())) {
 773			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 774					+ ": fetching roster version " + account.getRosterVersion());
 775		} else {
 776			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 777		}
 778		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 779				account.getRosterVersion());
 780		account.getXmppConnection().sendIqPacket(iqPacket,
 781				new OnIqPacketReceived() {
 782
 783					@Override
 784					public void onIqPacketReceived(final Account account,
 785							IqPacket packet) {
 786						Element query = packet.findChild("query");
 787						if (query != null) {
 788							account.getRoster().markAllAsNotInRoster();
 789							mIqParser.rosterItems(account, query);
 790						}
 791					}
 792				});
 793	}
 794
 795	public void fetchBookmarks(Account account) {
 796		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 797		Element query = iqPacket.query("jabber:iq:private");
 798		query.addChild("storage", "storage:bookmarks");
 799		OnIqPacketReceived callback = new OnIqPacketReceived() {
 800
 801			@Override
 802			public void onIqPacketReceived(Account account, IqPacket packet) {
 803				Element query = packet.query();
 804				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 805				Element storage = query.findChild("storage",
 806						"storage:bookmarks");
 807				if (storage != null) {
 808					for (Element item : storage.getChildren()) {
 809						if (item.getName().equals("conference")) {
 810							Bookmark bookmark = Bookmark.parse(item, account);
 811							bookmarks.add(bookmark);
 812							Conversation conversation = find(bookmark);
 813							if (conversation != null) {
 814								conversation.setBookmark(bookmark);
 815							} else {
 816								if (bookmark.autojoin()) {
 817									conversation = findOrCreateConversation(
 818											account, bookmark.getJid(), true);
 819									conversation.setBookmark(bookmark);
 820									joinMuc(conversation);
 821								}
 822							}
 823						}
 824					}
 825				}
 826				account.setBookmarks(bookmarks);
 827			}
 828		};
 829		sendIqPacket(account, iqPacket, callback);
 830
 831	}
 832
 833	public void pushBookmarks(Account account) {
 834		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 835		Element query = iqPacket.query("jabber:iq:private");
 836		Element storage = query.addChild("storage", "storage:bookmarks");
 837		for (Bookmark bookmark : account.getBookmarks()) {
 838			storage.addChild(bookmark);
 839		}
 840		sendIqPacket(account, iqPacket, null);
 841	}
 842
 843	private void mergePhoneContactsWithRoster() {
 844		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 845				new OnPhoneContactsLoadedListener() {
 846					@Override
 847					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 848						for (Account account : accounts) {
 849							account.getRoster().clearSystemAccounts();
 850						}
 851						for (Bundle phoneContact : phoneContacts) {
 852							for (Account account : accounts) {
 853								Jid jid;
 854								try {
 855									jid = Jid.fromString(phoneContact.getString("jid"));
 856								} catch (final InvalidJidException e) {
 857									// TODO: Warn if contact import fails here?
 858									break;
 859								}
 860								final Contact contact = account.getRoster()
 861									.getContact(jid);
 862								String systemAccount = phoneContact
 863									.getInt("phoneid")
 864									+ "#"
 865									+ phoneContact.getString("lookup");
 866								contact.setSystemAccount(systemAccount);
 867								contact.setPhotoUri(phoneContact
 868										.getString("photouri"));
 869								contact.setSystemName(phoneContact
 870										.getString("displayname"));
 871								getAvatarService().clear(contact);
 872							}
 873						}
 874					}
 875				});
 876	}
 877
 878	private void initConversations() {
 879		synchronized (this.conversations) {
 880			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 881			for (Account account : this.accounts) {
 882				accountLookupTable.put(account.getUuid(), account);
 883			}
 884			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 885			for (Conversation conv : this.conversations) {
 886				Account account = accountLookupTable.get(conv.getAccountUuid());
 887				conv.setAccount(account);
 888				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 889				checkDeletedFiles(conv);
 890			}
 891		}
 892	}
 893
 894	public List<Conversation> getConversations() {
 895		return this.conversations;
 896	}
 897
 898	private void checkDeletedFiles(Conversation conversation) {
 899		for (Message message : conversation.getMessages()) {
 900			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 901					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 902				if (!getFileBackend().isFileAvailable(message)) {
 903					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 904				}
 905					}
 906		}
 907	}
 908
 909	private void markFileDeleted(String uuid) {
 910		for (Conversation conversation : getConversations()) {
 911			for (Message message : conversation.getMessages()) {
 912				if (message.getType() == Message.TYPE_IMAGE
 913						&& message.getEncryption() != Message.ENCRYPTION_PGP
 914						&& message.getUuid().equals(uuid)) {
 915					if (!getFileBackend().isFileAvailable(message)) {
 916						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 917						updateConversationUi();
 918					}
 919					return;
 920						}
 921			}
 922		}
 923	}
 924
 925	public void populateWithOrderedConversations(final List<Conversation> list) {
 926		populateWithOrderedConversations(list, true);
 927	}
 928
 929	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 930		list.clear();
 931		if (includeConferences) {
 932			list.addAll(getConversations());
 933		} else {
 934			for (Conversation conversation : getConversations()) {
 935				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 936					list.add(conversation);
 937				}
 938			}
 939		}
 940		Collections.sort(list, new Comparator<Conversation>() {
 941			@Override
 942			public int compare(Conversation lhs, Conversation rhs) {
 943				Message left = lhs.getLatestMessage();
 944				Message right = rhs.getLatestMessage();
 945				if (left.getTimeSent() > right.getTimeSent()) {
 946					return -1;
 947				} else if (left.getTimeSent() < right.getTimeSent()) {
 948					return 1;
 949				} else {
 950					return 0;
 951				}
 952			}
 953		});
 954	}
 955
 956	public int loadMoreMessages(Conversation conversation, long timestamp) {
 957		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 958				timestamp);
 959		for (Message message : messages) {
 960			message.setConversation(conversation);
 961		}
 962		conversation.addAll(0, messages);
 963		return messages.size();
 964	}
 965
 966	public List<Account> getAccounts() {
 967		return this.accounts;
 968	}
 969
 970	public Conversation find(List<Conversation> haystack, Contact contact) {
 971		for (Conversation conversation : haystack) {
 972			if (conversation.getContact() == contact) {
 973				return conversation;
 974			}
 975		}
 976		return null;
 977	}
 978
 979	public Conversation find(final List<Conversation> haystack,
 980			final Account account,
 981			final Jid jid) {
 982		for (Conversation conversation : haystack) {
 983			if ((account == null || conversation.getAccount() == account)
 984					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 985				return conversation;
 986					}
 987		}
 988		return null;
 989	}
 990
 991	public Conversation findOrCreateConversation(final Account account, final Jid jid,
 992			final boolean muc) {
 993		synchronized (this.conversations) {
 994			Conversation conversation = find(account, jid);
 995			if (conversation != null) {
 996				return conversation;
 997			}
 998			conversation = databaseBackend.findConversation(account, jid);
 999			if (conversation != null) {
1000				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1001				conversation.setAccount(account);
1002				if (muc) {
1003					conversation.setMode(Conversation.MODE_MULTI);
1004				} else {
1005					conversation.setMode(Conversation.MODE_SINGLE);
1006				}
1007				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1008				this.databaseBackend.updateConversation(conversation);
1009			} else {
1010				String conversationName;
1011				Contact contact = account.getRoster().getContact(jid);
1012				if (contact != null) {
1013					conversationName = contact.getDisplayName();
1014				} else {
1015					conversationName = jid.getLocalpart();
1016				}
1017				if (muc) {
1018					conversation = new Conversation(conversationName, account, jid,
1019							Conversation.MODE_MULTI);
1020				} else {
1021					conversation = new Conversation(conversationName, account, jid,
1022							Conversation.MODE_SINGLE);
1023				}
1024				this.databaseBackend.createConversation(conversation);
1025			}
1026			this.conversations.add(conversation);
1027			updateConversationUi();
1028			return conversation;
1029		}
1030	}
1031
1032	public void archiveConversation(Conversation conversation) {
1033		synchronized (this.conversations) {
1034			if (conversation.getMode() == Conversation.MODE_MULTI) {
1035				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1036					Bookmark bookmark = conversation.getBookmark();
1037					if (bookmark != null && bookmark.autojoin()) {
1038						bookmark.setAutojoin(false);
1039						pushBookmarks(bookmark.getAccount());
1040					}
1041				}
1042				leaveMuc(conversation);
1043			} else {
1044				conversation.endOtrIfNeeded();
1045			}
1046			this.databaseBackend.updateConversation(conversation);
1047			this.conversations.remove(conversation);
1048			updateConversationUi();
1049		}
1050	}
1051
1052	public void clearConversationHistory(Conversation conversation) {
1053		this.databaseBackend.deleteMessagesInConversation(conversation);
1054		conversation.getMessages().clear();
1055		updateConversationUi();
1056	}
1057
1058	public int getConversationCount() {
1059		return this.databaseBackend.getConversationCount();
1060	}
1061
1062	public void createAccount(Account account) {
1063		account.initOtrEngine(this);
1064		databaseBackend.createAccount(account);
1065		this.accounts.add(account);
1066		this.reconnectAccount(account, false);
1067		updateAccountUi();
1068	}
1069
1070	public void updateAccount(Account account) {
1071		this.statusListener.onStatusChanged(account);
1072		databaseBackend.updateAccount(account);
1073		reconnectAccount(account, false);
1074		updateAccountUi();
1075		getNotificationService().updateErrorNotification();
1076	}
1077
1078	public void deleteAccount(Account account) {
1079		synchronized (this.conversations) {
1080			for (Conversation conversation : conversations) {
1081				if (conversation.getAccount() == account) {
1082					if (conversation.getMode() == Conversation.MODE_MULTI) {
1083						leaveMuc(conversation);
1084					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1085						conversation.endOtrIfNeeded();
1086					}
1087					conversations.remove(conversation);
1088				}
1089			}
1090			if (account.getXmppConnection() != null) {
1091				this.disconnect(account, true);
1092			}
1093			databaseBackend.deleteAccount(account);
1094			this.accounts.remove(account);
1095			updateAccountUi();
1096			getNotificationService().updateErrorNotification();
1097		}
1098	}
1099
1100	private void removeStaleListeners() {
1101		boolean removedListener = false;
1102		synchronized (this.convChangedListenerCount) {
1103			if (this.mOnConversationUpdate != null) {
1104				this.mOnConversationUpdate = null;
1105				this.convChangedListenerCount = 0;
1106				this.mNotificationService.setIsInForeground(false);
1107				removedListener = true;
1108			}
1109		}
1110		synchronized (this.accountChangedListenerCount) {
1111			if (this.mOnAccountUpdate != null) {
1112				this.mOnAccountUpdate = null;
1113				this.accountChangedListenerCount = 0;
1114				removedListener = true;
1115			}
1116		}
1117		synchronized (this.rosterChangedListenerCount) {
1118			if (this.mOnRosterUpdate != null) {
1119				this.mOnRosterUpdate = null;
1120				this.rosterChangedListenerCount = 0;
1121				removedListener = true;
1122			}
1123		}
1124		if (removedListener) {
1125			final String msg = "removed stale listeners";
1126			Log.d(Config.LOGTAG, msg);
1127			checkListeners();
1128			try {
1129				OutputStream os = openFileOutput("stacktrace.txt", MODE_PRIVATE);
1130				os.write(msg.getBytes());
1131				os.flush();
1132				os.close();
1133			} catch (final FileNotFoundException ignored) {
1134
1135			} catch (final IOException ignored) {
1136			}
1137		}
1138	}
1139
1140	public void setOnConversationListChangedListener(
1141			OnConversationUpdate listener) {
1142		/*if (!isScreenOn()) {
1143			Log.d(Config.LOGTAG,
1144			"ignoring setOnConversationListChangedListener");
1145			return;
1146			}*/
1147		synchronized (this.convChangedListenerCount) {
1148			if (checkListeners()) {
1149				switchToForeground();
1150			}
1151			this.mOnConversationUpdate = listener;
1152			this.mNotificationService.setIsInForeground(true);
1153			this.convChangedListenerCount++;
1154		}
1155			}
1156
1157	public void removeOnConversationListChangedListener() {
1158		synchronized (this.convChangedListenerCount) {
1159			this.convChangedListenerCount--;
1160			if (this.convChangedListenerCount <= 0) {
1161				this.convChangedListenerCount = 0;
1162				this.mOnConversationUpdate = null;
1163				this.mNotificationService.setIsInForeground(false);
1164				if (checkListeners()) {
1165					switchToBackground();
1166				}
1167			}
1168		}
1169	}
1170
1171	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1172		/*if (!isScreenOn()) {
1173			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1174			return;
1175			}*/
1176		synchronized (this.accountChangedListenerCount) {
1177			if (checkListeners()) {
1178				switchToForeground();
1179			}
1180			this.mOnAccountUpdate = listener;
1181			this.accountChangedListenerCount++;
1182		}
1183	}
1184
1185	public void removeOnAccountListChangedListener() {
1186		synchronized (this.accountChangedListenerCount) {
1187			this.accountChangedListenerCount--;
1188			if (this.accountChangedListenerCount <= 0) {
1189				this.mOnAccountUpdate = null;
1190				this.accountChangedListenerCount = 0;
1191				if (checkListeners()) {
1192					switchToBackground();
1193				}
1194			}
1195		}
1196	}
1197
1198	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1199		/*if (!isScreenOn()) {
1200			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1201			return;
1202			}*/
1203		synchronized (this.rosterChangedListenerCount) {
1204			if (checkListeners()) {
1205				switchToForeground();
1206			}
1207			this.mOnRosterUpdate = listener;
1208			this.rosterChangedListenerCount++;
1209		}
1210	}
1211
1212	public void removeOnRosterUpdateListener() {
1213		synchronized (this.rosterChangedListenerCount) {
1214			this.rosterChangedListenerCount--;
1215			if (this.rosterChangedListenerCount <= 0) {
1216				this.rosterChangedListenerCount = 0;
1217				this.mOnRosterUpdate = null;
1218				if (checkListeners()) {
1219					switchToBackground();
1220				}
1221			}
1222		}
1223	}
1224
1225	private boolean checkListeners() {
1226		return (this.mOnAccountUpdate == null
1227				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1228	}
1229
1230	private void switchToForeground() {
1231		for (Account account : getAccounts()) {
1232			if (account.getStatus() == Account.State.ONLINE) {
1233				XmppConnection connection = account.getXmppConnection();
1234				if (connection != null && connection.getFeatures().csi()) {
1235					connection.sendActive();
1236				}
1237			}
1238		}
1239		Log.d(Config.LOGTAG, "app switched into foreground");
1240	}
1241
1242	private void switchToBackground() {
1243		for (Account account : getAccounts()) {
1244			if (account.getStatus() == Account.State.ONLINE) {
1245				XmppConnection connection = account.getXmppConnection();
1246				if (connection != null && connection.getFeatures().csi()) {
1247					connection.sendInactive();
1248				}
1249			}
1250		}
1251		this.mNotificationService.setIsInForeground(false);
1252		Log.d(Config.LOGTAG, "app switched into background");
1253	}
1254
1255	private boolean isScreenOn() {
1256		PowerManager pm = (PowerManager) this
1257			.getSystemService(Context.POWER_SERVICE);
1258		return pm.isScreenOn();
1259	}
1260
1261	public void connectMultiModeConversations(Account account) {
1262		List<Conversation> conversations = getConversations();
1263		for (Conversation conversation : conversations) {
1264			if ((conversation.getMode() == Conversation.MODE_MULTI)
1265					&& (conversation.getAccount() == account)) {
1266				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			Log.d(Config.LOGTAG,
1277					"joining conversation " + conversation.getContactJid());
1278			String nick = conversation.getMucOptions().getProposedNick();
1279			conversation.getMucOptions().setJoinNick(nick);
1280			PresencePacket packet = new PresencePacket();
1281			final Jid joinJid = conversation.getMucOptions().getJoinJid();
1282			packet.setTo(conversation.getMucOptions().getJoinJid());
1283			Element x = new Element("x");
1284			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1285			if (conversation.getMucOptions().getPassword() != null) {
1286				Element password = x.addChild("password");
1287				password.setContent(conversation.getMucOptions().getPassword());
1288			}
1289			String sig = account.getPgpSignature();
1290			if (sig != null) {
1291				packet.addChild("status").setContent("online");
1292				packet.addChild("x", "jabber:x:signed").setContent(sig);
1293			}
1294			if (conversation.getMessages().size() != 0) {
1295				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1296						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1297				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1298				Date date = new Date(conversation.getLatestMessage()
1299						.getTimeSent() + 1000);
1300				x.addChild("history").setAttribute("since",
1301						mDateFormat.format(date));
1302			}
1303			packet.addChild(x);
1304			sendPresencePacket(account, packet);
1305			if (!joinJid.equals(conversation.getContactJid())) {
1306				conversation.setContactJid(joinJid);
1307				databaseBackend.updateConversation(conversation);
1308			}
1309		} else {
1310			account.pendingConferenceJoins.add(conversation);
1311		}
1312	}
1313
1314	public void setOnRenameListener(OnRenameListener listener) {
1315		this.renameListener = listener;
1316	}
1317
1318	public void providePasswordForMuc(Conversation conversation, String password) {
1319		if (conversation.getMode() == Conversation.MODE_MULTI) {
1320			conversation.getMucOptions().setPassword(password);
1321			if (conversation.getBookmark() != null) {
1322				conversation.getBookmark().setAutojoin(true);
1323				pushBookmarks(conversation.getAccount());
1324			}
1325			databaseBackend.updateConversation(conversation);
1326			joinMuc(conversation);
1327		}
1328	}
1329
1330	public void renameInMuc(final Conversation conversation, final String nick) {
1331		final MucOptions options = conversation.getMucOptions();
1332		options.setJoinNick(nick);
1333		if (options.online()) {
1334			Account account = conversation.getAccount();
1335			options.setOnRenameListener(new OnRenameListener() {
1336
1337				@Override
1338				public void onRename(boolean success) {
1339					if (renameListener != null) {
1340						renameListener.onRename(success);
1341					}
1342					if (success) {
1343						conversation.setContactJid(conversation.getMucOptions()
1344								.getJoinJid());
1345						databaseBackend.updateConversation(conversation);
1346						Bookmark bookmark = conversation.getBookmark();
1347						if (bookmark != null) {
1348							bookmark.setNick(nick);
1349							pushBookmarks(bookmark.getAccount());
1350						}
1351					}
1352				}
1353			});
1354			options.flagAboutToRename();
1355			PresencePacket packet = new PresencePacket();
1356			packet.setTo(options.getJoinJid());
1357			packet.setFrom(conversation.getAccount().getJid());
1358
1359			String sig = account.getPgpSignature();
1360			if (sig != null) {
1361				packet.addChild("status").setContent("online");
1362				packet.addChild("x", "jabber:x:signed").setContent(sig);
1363			}
1364			sendPresencePacket(account, packet);
1365		} else {
1366			conversation.setContactJid(options.getJoinJid());
1367			databaseBackend.updateConversation(conversation);
1368			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1369				Bookmark bookmark = conversation.getBookmark();
1370				if (bookmark != null) {
1371					bookmark.setNick(nick);
1372					pushBookmarks(bookmark.getAccount());
1373				}
1374				joinMuc(conversation);
1375			}
1376		}
1377	}
1378
1379	public void leaveMuc(Conversation conversation) {
1380		Account account = conversation.getAccount();
1381		account.pendingConferenceJoins.remove(conversation);
1382		account.pendingConferenceLeaves.remove(conversation);
1383		if (account.getStatus() == Account.State.ONLINE) {
1384			PresencePacket packet = new PresencePacket();
1385			packet.setTo(conversation.getMucOptions().getJoinJid());
1386			packet.setFrom(conversation.getAccount().getJid());
1387			packet.setAttribute("type", "unavailable");
1388			sendPresencePacket(conversation.getAccount(), packet);
1389			conversation.getMucOptions().setOffline();
1390			conversation.deregisterWithBookmark();
1391			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1392					+ ": leaving muc " + conversation.getContactJid());
1393		} else {
1394			account.pendingConferenceLeaves.add(conversation);
1395		}
1396	}
1397
1398	public void disconnect(Account account, boolean force) {
1399		if ((account.getStatus() == Account.State.ONLINE)
1400				|| (account.getStatus() == Account.State.DISABLED)) {
1401			if (!force) {
1402				List<Conversation> conversations = getConversations();
1403				for (Conversation conversation : conversations) {
1404					if (conversation.getAccount() == account) {
1405						if (conversation.getMode() == Conversation.MODE_MULTI) {
1406							leaveMuc(conversation);
1407						} else {
1408							if (conversation.endOtrIfNeeded()) {
1409								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1410										+ ": ended otr session with "
1411										+ conversation.getContactJid());
1412							}
1413						}
1414					}
1415				}
1416			}
1417			account.getXmppConnection().disconnect(force);
1418				}
1419	}
1420
1421	@Override
1422	public IBinder onBind(Intent intent) {
1423		return mBinder;
1424	}
1425
1426	public void updateMessage(Message message) {
1427		databaseBackend.updateMessage(message);
1428		updateConversationUi();
1429	}
1430
1431	protected void syncDirtyContacts(Account account) {
1432		for (Contact contact : account.getRoster().getContacts()) {
1433			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1434				pushContactToServer(contact);
1435			}
1436			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1437				deleteContactOnServer(contact);
1438			}
1439		}
1440	}
1441
1442	public void createContact(Contact contact) {
1443		SharedPreferences sharedPref = getPreferences();
1444		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1445		if (autoGrant) {
1446			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1447			contact.setOption(Contact.Options.ASKING);
1448		}
1449		pushContactToServer(contact);
1450	}
1451
1452	public void onOtrSessionEstablished(Conversation conversation) {
1453		Account account = conversation.getAccount();
1454		List<Message> messages = conversation.getMessages();
1455		Session otrSession = conversation.getOtrSession();
1456		Log.d(Config.LOGTAG,
1457				account.getJid().toBareJid() + " otr session established with "
1458				+ conversation.getContactJid() + "/"
1459				+ otrSession.getSessionID().getUserID());
1460		for (Message msg : messages) {
1461			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1462					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1463				SessionID id = otrSession.getSessionID();
1464				try {
1465					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1466				} catch (InvalidJidException e) {
1467					break;
1468				}
1469				if (msg.getType() == Message.TYPE_TEXT) {
1470					MessagePacket outPacket = mMessageGenerator
1471						.generateOtrChat(msg, true);
1472					if (outPacket != null) {
1473						msg.setStatus(Message.STATUS_SEND);
1474						databaseBackend.updateMessage(msg);
1475						sendMessagePacket(account, outPacket);
1476					}
1477				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1478					mJingleConnectionManager.createNewConnection(msg);
1479				}
1480					}
1481		}
1482		updateConversationUi();
1483	}
1484
1485	public boolean renewSymmetricKey(Conversation conversation) {
1486		Account account = conversation.getAccount();
1487		byte[] symmetricKey = new byte[32];
1488		this.mRandom.nextBytes(symmetricKey);
1489		Session otrSession = conversation.getOtrSession();
1490		if (otrSession != null) {
1491			MessagePacket packet = new MessagePacket();
1492			packet.setType(MessagePacket.TYPE_CHAT);
1493			packet.setFrom(account.getJid());
1494			packet.addChild("private", "urn:xmpp:carbons:2");
1495			packet.addChild("no-copy", "urn:xmpp:hints");
1496			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1497					+ otrSession.getSessionID().getUserID());
1498			try {
1499				packet.setBody(otrSession
1500						.transformSending(CryptoHelper.FILETRANSFER
1501							+ CryptoHelper.bytesToHex(symmetricKey)));
1502				sendMessagePacket(account, packet);
1503				conversation.setSymmetricKey(symmetricKey);
1504				return true;
1505			} catch (OtrException e) {
1506				return false;
1507			}
1508		}
1509		return false;
1510	}
1511
1512	public void pushContactToServer(Contact contact) {
1513		contact.resetOption(Contact.Options.DIRTY_DELETE);
1514		contact.setOption(Contact.Options.DIRTY_PUSH);
1515		Account account = contact.getAccount();
1516		if (account.getStatus() == Account.State.ONLINE) {
1517			boolean ask = contact.getOption(Contact.Options.ASKING);
1518			boolean sendUpdates = contact
1519				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1520				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1521			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1522			iq.query("jabber:iq:roster").addChild(contact.asElement());
1523			account.getXmppConnection().sendIqPacket(iq, null);
1524			if (sendUpdates) {
1525				sendPresencePacket(account,
1526						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1527			}
1528			if (ask) {
1529				sendPresencePacket(account,
1530						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1531			}
1532		}
1533	}
1534
1535	public void publishAvatar(Account account, Uri image,
1536			final UiCallback<Avatar> callback) {
1537		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1538		final int size = Config.AVATAR_SIZE;
1539		final Avatar avatar = getFileBackend()
1540			.getPepAvatar(image, size, format);
1541		if (avatar != null) {
1542			avatar.height = size;
1543			avatar.width = size;
1544			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1545				avatar.type = "image/webp";
1546			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1547				avatar.type = "image/jpeg";
1548			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1549				avatar.type = "image/png";
1550			}
1551			if (!getFileBackend().save(avatar)) {
1552				callback.error(R.string.error_saving_avatar, avatar);
1553				return;
1554			}
1555			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1556			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1557
1558				@Override
1559				public void onIqPacketReceived(Account account, IqPacket result) {
1560					if (result.getType() == IqPacket.TYPE_RESULT) {
1561						IqPacket packet = XmppConnectionService.this.mIqGenerator
1562							.publishAvatarMetadata(avatar);
1563						sendIqPacket(account, packet, new OnIqPacketReceived() {
1564
1565							@Override
1566							public void onIqPacketReceived(Account account,
1567									IqPacket result) {
1568								if (result.getType() == IqPacket.TYPE_RESULT) {
1569									if (account.setAvatar(avatar.getFilename())) {
1570										databaseBackend.updateAccount(account);
1571									}
1572									callback.success(avatar);
1573								} else {
1574									callback.error(
1575											R.string.error_publish_avatar_server_reject,
1576											avatar);
1577								}
1578							}
1579						});
1580					} else {
1581						callback.error(
1582								R.string.error_publish_avatar_server_reject,
1583								avatar);
1584					}
1585				}
1586			});
1587		} else {
1588			callback.error(R.string.error_publish_avatar_converting, null);
1589		}
1590	}
1591
1592	public void fetchAvatar(Account account, Avatar avatar) {
1593		fetchAvatar(account, avatar, null);
1594	}
1595
1596	public void fetchAvatar(Account account, final Avatar avatar,
1597			final UiCallback<Avatar> callback) {
1598		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1599		sendIqPacket(account, packet, new OnIqPacketReceived() {
1600
1601			@Override
1602			public void onIqPacketReceived(Account account, IqPacket result) {
1603				final String ERROR = account.getJid().toBareJid()
1604					+ ": fetching avatar for " + avatar.owner + " failed ";
1605				if (result.getType() == IqPacket.TYPE_RESULT) {
1606					avatar.image = mIqParser.avatarData(result);
1607					if (avatar.image != null) {
1608						if (getFileBackend().save(avatar)) {
1609							if (account.getJid().toBareJid().equals(avatar.owner)) {
1610								if (account.setAvatar(avatar.getFilename())) {
1611									databaseBackend.updateAccount(account);
1612								}
1613								getAvatarService().clear(account);
1614								updateConversationUi();
1615								updateAccountUi();
1616							} else {
1617								Contact contact = account.getRoster()
1618									.getContact(avatar.owner);
1619								contact.setAvatar(avatar.getFilename());
1620								getAvatarService().clear(contact);
1621								updateConversationUi();
1622								updateRosterUi();
1623							}
1624							if (callback != null) {
1625								callback.success(avatar);
1626							}
1627							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1628									+ ": succesfully fetched avatar for "
1629									+ avatar.owner);
1630							return;
1631						}
1632					} else {
1633
1634						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1635					}
1636				} else {
1637					Element error = result.findChild("error");
1638					if (error == null) {
1639						Log.d(Config.LOGTAG, ERROR + "(server error)");
1640					} else {
1641						Log.d(Config.LOGTAG, ERROR + error.toString());
1642					}
1643				}
1644				if (callback != null) {
1645					callback.error(0, null);
1646				}
1647
1648			}
1649		});
1650	}
1651
1652	public void checkForAvatar(Account account,
1653			final UiCallback<Avatar> callback) {
1654		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1655		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1656
1657			@Override
1658			public void onIqPacketReceived(Account account, IqPacket packet) {
1659				if (packet.getType() == IqPacket.TYPE_RESULT) {
1660					Element pubsub = packet.findChild("pubsub",
1661							"http://jabber.org/protocol/pubsub");
1662					if (pubsub != null) {
1663						Element items = pubsub.findChild("items");
1664						if (items != null) {
1665							Avatar avatar = Avatar.parseMetadata(items);
1666							if (avatar != null) {
1667								avatar.owner = account.getJid().toBareJid();
1668								if (fileBackend.isAvatarCached(avatar)) {
1669									if (account.setAvatar(avatar.getFilename())) {
1670										databaseBackend.updateAccount(account);
1671									}
1672									getAvatarService().clear(account);
1673									callback.success(avatar);
1674								} else {
1675									fetchAvatar(account, avatar, callback);
1676								}
1677								return;
1678							}
1679						}
1680					}
1681				}
1682				callback.error(0, null);
1683			}
1684		});
1685	}
1686
1687	public void deleteContactOnServer(Contact contact) {
1688		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1689		contact.resetOption(Contact.Options.DIRTY_PUSH);
1690		contact.setOption(Contact.Options.DIRTY_DELETE);
1691		Account account = contact.getAccount();
1692		if (account.getStatus() == Account.State.ONLINE) {
1693			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1694			Element item = iq.query("jabber:iq:roster").addChild("item");
1695			item.setAttribute("jid", contact.getJid().toString());
1696			item.setAttribute("subscription", "remove");
1697			account.getXmppConnection().sendIqPacket(iq, null);
1698		}
1699	}
1700
1701	public void updateConversation(Conversation conversation) {
1702		this.databaseBackend.updateConversation(conversation);
1703	}
1704
1705	public void reconnectAccount(final Account account, final boolean force) {
1706		new Thread(new Runnable() {
1707
1708			@Override
1709			public void run() {
1710				if (account.getXmppConnection() != null) {
1711					disconnect(account, force);
1712				}
1713				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1714					if (account.getXmppConnection() == null) {
1715						account.setXmppConnection(createConnection(account));
1716					}
1717					Thread thread = new Thread(account.getXmppConnection());
1718					thread.start();
1719					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1720							false);
1721				} else {
1722					account.getRoster().clearPresences();
1723					account.setXmppConnection(null);
1724				}
1725			}
1726		}).start();
1727	}
1728
1729	public void invite(Conversation conversation, String contact) {
1730		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1731		sendMessagePacket(conversation.getAccount(), packet);
1732	}
1733
1734	public void resetSendingToWaiting(Account account) {
1735		for (Conversation conversation : getConversations()) {
1736			if (conversation.getAccount() == account) {
1737				for (Message message : conversation.getMessages()) {
1738					if (message.getType() != Message.TYPE_IMAGE
1739							&& message.getStatus() == Message.STATUS_UNSEND) {
1740						markMessage(message, Message.STATUS_WAITING);
1741							}
1742				}
1743			}
1744		}
1745	}
1746
1747	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1748			final int status) {
1749		if (uuid == null) {
1750			return false;
1751		} else {
1752			for (Conversation conversation : getConversations()) {
1753				if (conversation.getContactJid().equals(recipient)
1754						&& conversation.getAccount().equals(account)) {
1755					return markMessage(conversation, uuid, status);
1756						}
1757			}
1758			return false;
1759		}
1760	}
1761
1762	public boolean markMessage(Conversation conversation, String uuid,
1763			int status) {
1764		if (uuid == null) {
1765			return false;
1766		} else {
1767			for (Message message : conversation.getMessages()) {
1768				if (uuid.equals(message.getUuid())
1769						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1770							.equals(message.getRemoteMsgId()))) {
1771					markMessage(message, status);
1772					return true;
1773							}
1774			}
1775			return false;
1776		}
1777	}
1778
1779	public void markMessage(Message message, int status) {
1780		if (status == Message.STATUS_SEND_FAILED
1781				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1782					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1783			return;
1784					}
1785		message.setStatus(status);
1786		databaseBackend.updateMessage(message);
1787		updateConversationUi();
1788	}
1789
1790	public SharedPreferences getPreferences() {
1791		return PreferenceManager
1792			.getDefaultSharedPreferences(getApplicationContext());
1793	}
1794
1795	public boolean forceEncryption() {
1796		return getPreferences().getBoolean("force_encryption", false);
1797	}
1798
1799	public boolean confirmMessages() {
1800		return getPreferences().getBoolean("confirm_messages", true);
1801	}
1802
1803	public boolean saveEncryptedMessages() {
1804		return !getPreferences().getBoolean("dont_save_encrypted", false);
1805	}
1806
1807	public boolean indicateReceived() {
1808		return getPreferences().getBoolean("indicate_received", false);
1809	}
1810
1811	public void updateConversationUi() {
1812		if (mOnConversationUpdate != null) {
1813			mOnConversationUpdate.onConversationUpdate();
1814		}
1815	}
1816
1817	public void updateAccountUi() {
1818		if (mOnAccountUpdate != null) {
1819			mOnAccountUpdate.onAccountUpdate();
1820		}
1821	}
1822
1823	public void updateRosterUi() {
1824		if (mOnRosterUpdate != null) {
1825			mOnRosterUpdate.onRosterUpdate();
1826		}
1827	}
1828
1829	public Account findAccountByJid(final Jid accountJid) {
1830		for (Account account : this.accounts) {
1831			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1832				return account;
1833			}
1834		}
1835		return null;
1836	}
1837
1838	public Conversation findConversationByUuid(String uuid) {
1839		for (Conversation conversation : getConversations()) {
1840			if (conversation.getUuid().equals(uuid)) {
1841				return conversation;
1842			}
1843		}
1844		return null;
1845	}
1846
1847	public void markRead(Conversation conversation, boolean calledByUi) {
1848		mNotificationService.clear(conversation);
1849		final Message markable = conversation.getLatestMarkableMessage();
1850		conversation.markRead();
1851		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1852			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1853			Account account = conversation.getAccount();
1854			final Jid to = markable.getCounterpart();
1855			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1856			this.sendMessagePacket(conversation.getAccount(),packet);
1857		}
1858		if (!calledByUi) {
1859			updateConversationUi();
1860		}
1861	}
1862
1863	public void failWaitingOtrMessages(Conversation conversation) {
1864		for (Message message : conversation.getMessages()) {
1865			if (message.getEncryption() == Message.ENCRYPTION_OTR
1866					&& message.getStatus() == Message.STATUS_WAITING) {
1867				markMessage(message, Message.STATUS_SEND_FAILED);
1868					}
1869		}
1870	}
1871
1872	public SecureRandom getRNG() {
1873		return this.mRandom;
1874	}
1875
1876	public MemorizingTrustManager getMemorizingTrustManager() {
1877		return this.mMemorizingTrustManager;
1878	}
1879
1880	public PowerManager getPowerManager() {
1881		return this.pm;
1882	}
1883
1884	public LruCache<String, Bitmap> getBitmapCache() {
1885		return this.mBitmapCache;
1886	}
1887
1888	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1889		if (account.getStatus() == Account.State.ONLINE) {
1890			MessagePacket error = this.mMessageGenerator
1891				.generateNotAcceptable(packet);
1892			sendMessagePacket(account, error);
1893		}
1894	}
1895
1896	public void syncRosterToDisk(final Account account) {
1897		new Thread(new Runnable() {
1898
1899			@Override
1900			public void run() {
1901				databaseBackend.writeRoster(account.getRoster());
1902			}
1903		}).start();
1904
1905	}
1906
1907	public List<String> getKnownHosts() {
1908		List<String> hosts = new ArrayList<>();
1909		for (Account account : getAccounts()) {
1910			if (!hosts.contains(account.getServer().toString())) {
1911				hosts.add(account.getServer().toString());
1912			}
1913			for (Contact contact : account.getRoster().getContacts()) {
1914				if (contact.showInRoster()) {
1915					final String server = contact.getServer().toString();
1916					if (server != null && !hosts.contains(server)) {
1917						hosts.add(server);
1918					}
1919				}
1920			}
1921		}
1922		return hosts;
1923	}
1924
1925	public List<String> getKnownConferenceHosts() {
1926		ArrayList<String> mucServers = new ArrayList<>();
1927		for (Account account : accounts) {
1928			if (account.getXmppConnection() != null) {
1929				String server = account.getXmppConnection().getMucServer();
1930				if (server != null && !mucServers.contains(server)) {
1931					mucServers.add(server);
1932				}
1933			}
1934		}
1935		return mucServers;
1936	}
1937
1938	public void sendMessagePacket(Account account, MessagePacket packet) {
1939		XmppConnection connection = account.getXmppConnection();
1940		if (connection != null) {
1941			connection.sendMessagePacket(packet);
1942		}
1943	}
1944
1945	public void sendPresencePacket(Account account, PresencePacket packet) {
1946		XmppConnection connection = account.getXmppConnection();
1947		if (connection != null) {
1948			connection.sendPresencePacket(packet);
1949		}
1950	}
1951
1952	public void sendIqPacket(Account account, IqPacket packet,
1953			OnIqPacketReceived callback) {
1954		XmppConnection connection = account.getXmppConnection();
1955		if (connection != null) {
1956			connection.sendIqPacket(packet, callback);
1957		}
1958	}
1959
1960	public MessageGenerator getMessageGenerator() {
1961		return this.mMessageGenerator;
1962	}
1963
1964	public PresenceGenerator getPresenceGenerator() {
1965		return this.mPresenceGenerator;
1966	}
1967
1968	public IqGenerator getIqGenerator() {
1969		return this.mIqGenerator;
1970	}
1971
1972	public JingleConnectionManager getJingleConnectionManager() {
1973		return this.mJingleConnectionManager;
1974	}
1975
1976	public List<Contact> findContacts(Jid jid) {
1977		ArrayList<Contact> contacts = new ArrayList<>();
1978		for (Account account : getAccounts()) {
1979			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1980				Contact contact = account.getRoster().getContactFromRoster(jid);
1981				if (contact != null) {
1982					contacts.add(contact);
1983				}
1984			}
1985		}
1986		return contacts;
1987	}
1988
1989	public NotificationService getNotificationService() {
1990		return this.mNotificationService;
1991	}
1992
1993	public HttpConnectionManager getHttpConnectionManager() {
1994		return this.mHttpConnectionManager;
1995	}
1996
1997	public void resendFailedMessages(Message message) {
1998		List<Message> messages = new ArrayList<>();
1999		Message current = message;
2000		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2001			messages.add(current);
2002			if (current.mergeable(current.next())) {
2003				current = current.next();
2004			} else {
2005				break;
2006			}
2007		}
2008		for (Message msg : messages) {
2009			markMessage(msg, Message.STATUS_WAITING);
2010			this.resendMessage(msg);
2011		}
2012	}
2013
2014	public interface OnConversationUpdate {
2015		public void onConversationUpdate();
2016	}
2017
2018	public interface OnAccountUpdate {
2019		public void onAccountUpdate();
2020	}
2021
2022	public interface OnRosterUpdate {
2023		public void onRosterUpdate();
2024	}
2025
2026	public class XmppConnectionBinder extends Binder {
2027		public XmppConnectionService getService() {
2028			return XmppConnectionService.this;
2029		}
2030	}
2031}