XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.io.FileNotFoundException;
  36import java.io.IOException;
  37import java.io.OutputStream;
  38import java.math.BigInteger;
  39import java.security.SecureRandom;
  40import java.text.SimpleDateFormat;
  41import java.util.ArrayList;
  42import java.util.Collections;
  43import java.util.Comparator;
  44import java.util.Date;
  45import java.util.Hashtable;
  46import java.util.List;
  47import java.util.Locale;
  48import java.util.TimeZone;
  49import java.util.concurrent.CopyOnWriteArrayList;
  50
  51import de.duenndns.ssl.MemorizingTrustManager;
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.crypto.PgpEngine;
  55import eu.siacs.conversations.entities.Account;
  56import eu.siacs.conversations.entities.Bookmark;
  57import eu.siacs.conversations.entities.Contact;
  58import eu.siacs.conversations.entities.Conversation;
  59import eu.siacs.conversations.entities.Downloadable;
  60import eu.siacs.conversations.entities.DownloadableFile;
  61import eu.siacs.conversations.entities.DownloadablePlaceholder;
  62import eu.siacs.conversations.entities.Message;
  63import eu.siacs.conversations.entities.MucOptions;
  64import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  65import eu.siacs.conversations.entities.Presences;
  66import eu.siacs.conversations.generator.IqGenerator;
  67import eu.siacs.conversations.generator.MessageGenerator;
  68import eu.siacs.conversations.generator.PresenceGenerator;
  69import eu.siacs.conversations.http.HttpConnectionManager;
  70import eu.siacs.conversations.parser.IqParser;
  71import eu.siacs.conversations.parser.MessageParser;
  72import eu.siacs.conversations.parser.PresenceParser;
  73import eu.siacs.conversations.persistance.DatabaseBackend;
  74import eu.siacs.conversations.persistance.FileBackend;
  75import eu.siacs.conversations.ui.UiCallback;
  76import eu.siacs.conversations.utils.CryptoHelper;
  77import eu.siacs.conversations.utils.ExceptionHelper;
  78import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  79import eu.siacs.conversations.utils.PRNGFixes;
  80import eu.siacs.conversations.utils.PhoneHelper;
  81import eu.siacs.conversations.xml.Element;
  82import eu.siacs.conversations.xmpp.OnBindListener;
  83import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  84import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  85import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  86import eu.siacs.conversations.xmpp.OnStatusChanged;
  87import eu.siacs.conversations.xmpp.XmppConnection;
  88import eu.siacs.conversations.xmpp.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 OnMucRosterUpdate mOnMucRosterUpdate = null;
 216	private Integer mucRosterChangedListenerCount = 0;
 217	private SecureRandom mRandom;
 218	private FileObserver fileObserver = new FileObserver(
 219			FileBackend.getConversationsImageDirectory()) {
 220
 221		@Override
 222		public void onEvent(int event, String path) {
 223			if (event == FileObserver.DELETE) {
 224				markFileDeleted(path.split("\\.")[0]);
 225			}
 226		}
 227	};
 228	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 229
 230		@Override
 231		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 232			mJingleConnectionManager.deliverPacket(account, packet);
 233		}
 234	};
 235
 236	private OpenPgpServiceConnection pgpServiceConnection;
 237	private PgpEngine mPgpEngine = null;
 238	private Intent pingIntent;
 239	private PendingIntent pendingPingIntent = null;
 240	private WakeLock wakeLock;
 241	private PowerManager pm;
 242	private OnBindListener mOnBindListener = new OnBindListener() {
 243
 244		@Override
 245		public void onBind(final Account account) {
 246			account.getRoster().clearPresences();
 247			account.clearPresences(); // self presences
 248			account.pendingConferenceJoins.clear();
 249			account.pendingConferenceLeaves.clear();
 250			fetchRosterFromServer(account);
 251			fetchBookmarks(account);
 252			sendPresencePacket(account,
 253					mPresenceGenerator.sendPresence(account));
 254			connectMultiModeConversations(account);
 255			updateConversationUi();
 256		}
 257	};
 258
 259	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 260
 261		@Override
 262		public void onMessageAcknowledged(Account account, String uuid) {
 263			for (Conversation conversation : getConversations()) {
 264				if (conversation.getAccount() == account) {
 265					for (Message message : conversation.getMessages()) {
 266						if ((message.getStatus() == Message.STATUS_UNSEND || message
 267									.getStatus() == Message.STATUS_WAITING)
 268								&& message.getUuid().equals(uuid)) {
 269							markMessage(message, Message.STATUS_SEND);
 270							return;
 271								}
 272					}
 273				}
 274			}
 275		}
 276	};
 277	private LruCache<String, Bitmap> mBitmapCache;
 278	private IqGenerator mIqGenerator = new IqGenerator(this);
 279
 280	public PgpEngine getPgpEngine() {
 281		if (pgpServiceConnection.isBound()) {
 282			if (this.mPgpEngine == null) {
 283				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 284							getApplicationContext(),
 285							pgpServiceConnection.getService()), this);
 286			}
 287			return mPgpEngine;
 288		} else {
 289			return null;
 290		}
 291
 292	}
 293
 294	public FileBackend getFileBackend() {
 295		return this.fileBackend;
 296	}
 297
 298	public AvatarService getAvatarService() {
 299		return this.mAvatarService;
 300	}
 301
 302	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 303		final Message message;
 304		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 305			message = new Message(conversation, "",
 306					Message.ENCRYPTION_DECRYPTED);
 307		} else {
 308			message = new Message(conversation, "",
 309					conversation.getNextEncryption(forceEncryption()));
 310		}
 311		message.setCounterpart(conversation.getNextCounterpart());
 312		message.setType(Message.TYPE_FILE);
 313		message.setStatus(Message.STATUS_OFFERED);
 314		String path = getFileBackend().getOriginalPath(uri);
 315		if (path!=null) {
 316			message.setRelativeFilePath(path);
 317			getFileBackend().updateFileParams(message);
 318			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 319				getPgpEngine().encrypt(message, callback);
 320			} else {
 321				callback.success(message);
 322			}
 323		} else {
 324			new Thread(new Runnable() {
 325				@Override
 326				public void run() {
 327					try {
 328						getFileBackend().copyFileToPrivateStorage(message, uri);
 329						getFileBackend().updateFileParams(message);
 330						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 331							getPgpEngine().encrypt(message, callback);
 332						} else {
 333							callback.success(message);
 334						}
 335					} catch (FileBackend.FileCopyException e) {
 336						callback.error(e.getResId(),message);
 337					}
 338				}
 339			}).start();
 340
 341		}
 342	}
 343
 344	public void attachImageToConversation(final Conversation conversation,
 345			final Uri uri, final UiCallback<Message> callback) {
 346		final Message message;
 347		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 348			message = new Message(conversation, "",
 349					Message.ENCRYPTION_DECRYPTED);
 350		} else {
 351			message = new Message(conversation, "",
 352					conversation.getNextEncryption(forceEncryption()));
 353		}
 354		message.setCounterpart(conversation.getNextCounterpart());
 355		message.setType(Message.TYPE_IMAGE);
 356		message.setStatus(Message.STATUS_OFFERED);
 357		new Thread(new Runnable() {
 358
 359			@Override
 360			public void run() {
 361				try {
 362					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 363					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 364						getPgpEngine().encrypt(message, callback);
 365					} else {
 366						callback.success(message);
 367					}
 368				} catch (FileBackend.FileCopyException e) {
 369					callback.error(e.getResId(), message);
 370				}
 371			}
 372		}).start();
 373	}
 374
 375	public Conversation find(Bookmark bookmark) {
 376		return find(bookmark.getAccount(), bookmark.getJid());
 377	}
 378
 379	public Conversation find(final Account account, final Jid jid) {
 380		return find(getConversations(), account, jid);
 381	}
 382
 383	@Override
 384	public int onStartCommand(Intent intent, int flags, int startId) {
 385		if (intent != null && intent.getAction() != null) {
 386			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 387				mergePhoneContactsWithRoster();
 388				return START_STICKY;
 389			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 390				logoutAndSave();
 391				return START_NOT_STICKY;
 392			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 393				mNotificationService.clear();
 394			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 395				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 396				toggleForegroundService();
 397			}
 398		}
 399		this.wakeLock.acquire();
 400
 401		for (Account account : accounts) {
 402			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 403				if (!hasInternetConnection()) {
 404					account.setStatus(Account.State.NO_INTERNET);
 405					if (statusListener != null) {
 406						statusListener.onStatusChanged(account);
 407					}
 408				} else {
 409					if (account.getStatus() == Account.State.NO_INTERNET) {
 410						account.setStatus(Account.State.OFFLINE);
 411						if (statusListener != null) {
 412							statusListener.onStatusChanged(account);
 413						}
 414					}
 415					if (account.getStatus() == Account.State.ONLINE) {
 416						long lastReceived = account.getXmppConnection()
 417							.getLastPacketReceived();
 418						long lastSent = account.getXmppConnection()
 419							.getLastPingSent();
 420						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 421							Log.d(Config.LOGTAG, account.getJid()
 422									+ ": ping timeout");
 423							this.reconnectAccount(account, true);
 424						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 425							account.getXmppConnection().sendPing();
 426							this.scheduleWakeupCall(2, false);
 427						}
 428					} else if (account.getStatus() == Account.State.OFFLINE) {
 429						if (account.getXmppConnection() == null) {
 430							account.setXmppConnection(this
 431									.createConnection(account));
 432						}
 433						new Thread(account.getXmppConnection()).start();
 434					} else if ((account.getStatus() == Account.State.CONNECTING)
 435							&& ((SystemClock.elapsedRealtime() - account
 436									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 437						Log.d(Config.LOGTAG, account.getJid()
 438								+ ": time out during connect reconnecting");
 439						reconnectAccount(account, true);
 440					} else {
 441						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 442							reconnectAccount(account, true);
 443						}
 444					}
 445					// in any case. reschedule wakup call
 446					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 447				}
 448				if (mOnAccountUpdate != null) {
 449					mOnAccountUpdate.onAccountUpdate();
 450				}
 451			}
 452		}
 453		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 454			if (!pm.isScreenOn()) {
 455			removeStaleListeners();
 456			}*/
 457		if (wakeLock.isHeld()) {
 458			try {
 459				wakeLock.release();
 460			} catch (final RuntimeException ignored) {
 461			}
 462		}
 463		return START_STICKY;
 464	}
 465
 466	public boolean hasInternetConnection() {
 467		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 468			.getSystemService(Context.CONNECTIVITY_SERVICE);
 469		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 470		return activeNetwork != null && activeNetwork.isConnected();
 471	}
 472
 473	@SuppressLint("TrulyRandom")
 474	@Override
 475	public void onCreate() {
 476		ExceptionHelper.init(getApplicationContext());
 477		PRNGFixes.apply();
 478		this.mRandom = new SecureRandom();
 479		this.mMemorizingTrustManager = new MemorizingTrustManager(
 480				getApplicationContext());
 481
 482		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 483		int cacheSize = maxMemory / 8;
 484		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 485			@Override
 486			protected int sizeOf(String key, Bitmap bitmap) {
 487				return bitmap.getByteCount() / 1024;
 488			}
 489		};
 490
 491		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 492		this.accounts = databaseBackend.getAccounts();
 493
 494		for (Account account : this.accounts) {
 495			account.initOtrEngine(this);
 496			this.databaseBackend.readRoster(account.getRoster());
 497		}
 498		initConversations();
 499		this.mergePhoneContactsWithRoster();
 500
 501		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 502		this.fileObserver.startWatching();
 503		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 504		this.pgpServiceConnection.bindToService();
 505
 506		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 507		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 508		toggleForegroundService();
 509	}
 510
 511	public void toggleForegroundService() {
 512		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 513			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 514		} else {
 515			stopForeground(true);
 516		}
 517	}
 518
 519	@Override
 520	public void onTaskRemoved(Intent rootIntent) {
 521		super.onTaskRemoved(rootIntent);
 522		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 523			this.logoutAndSave();
 524		}
 525	}
 526
 527	private void logoutAndSave() {
 528		for (Account account : accounts) {
 529			databaseBackend.writeRoster(account.getRoster());
 530			if (account.getXmppConnection() != null) {
 531				disconnect(account, false);
 532			}
 533		}
 534		Context context = getApplicationContext();
 535		AlarmManager alarmManager = (AlarmManager) context
 536			.getSystemService(Context.ALARM_SERVICE);
 537		Intent intent = new Intent(context, EventReceiver.class);
 538		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 539		Log.d(Config.LOGTAG, "good bye");
 540		stopSelf();
 541	}
 542
 543	protected void scheduleWakeupCall(int seconds, boolean ping) {
 544		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 545		Context context = getApplicationContext();
 546		AlarmManager alarmManager = (AlarmManager) context
 547			.getSystemService(Context.ALARM_SERVICE);
 548
 549		if (ping) {
 550			if (this.pingIntent == null) {
 551				this.pingIntent = new Intent(context, EventReceiver.class);
 552				this.pingIntent.setAction("ping");
 553				this.pingIntent.putExtra("time", timeToWake);
 554				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 555						this.pingIntent, 0);
 556				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 557						timeToWake, pendingPingIntent);
 558			} else {
 559				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 560				if (scheduledTime < SystemClock.elapsedRealtime()
 561						|| (scheduledTime > timeToWake)) {
 562					this.pingIntent.putExtra("time", timeToWake);
 563					alarmManager.cancel(this.pendingPingIntent);
 564					this.pendingPingIntent = PendingIntent.getBroadcast(
 565							context, 0, this.pingIntent, 0);
 566					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 567							timeToWake, pendingPingIntent);
 568						}
 569			}
 570		} else {
 571			Intent intent = new Intent(context, EventReceiver.class);
 572			intent.setAction("ping_check");
 573			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 574					intent, 0);
 575			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 576					alarmIntent);
 577		}
 578
 579	}
 580
 581	public XmppConnection createConnection(Account account) {
 582		SharedPreferences sharedPref = getPreferences();
 583		account.setResource(sharedPref.getString("resource", "mobile")
 584				.toLowerCase(Locale.getDefault()));
 585		XmppConnection connection = new XmppConnection(account, this);
 586		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 587		connection.setOnStatusChangedListener(this.statusListener);
 588		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 589		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 590		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 591		connection.setOnBindListener(this.mOnBindListener);
 592		connection
 593			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 594		return connection;
 595	}
 596
 597	public void sendMessage(Message message) {
 598		Account account = message.getConversation().getAccount();
 599		account.deactivateGracePeriod();
 600		Conversation conv = message.getConversation();
 601		MessagePacket packet = null;
 602		boolean saveInDb = true;
 603		boolean send = false;
 604		if (account.getStatus() == Account.State.ONLINE
 605				&& account.getXmppConnection() != null) {
 606			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 607				if (message.getCounterpart() != null) {
 608					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 609						if (!conv.hasValidOtrSession()) {
 610							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 611							message.setStatus(Message.STATUS_WAITING);
 612						} else if (conv.hasValidOtrSession()
 613								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 614							mJingleConnectionManager
 615								.createNewConnection(message);
 616								}
 617					} else {
 618						mJingleConnectionManager.createNewConnection(message);
 619					}
 620				} else {
 621					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 622						conv.startOtrIfNeeded();
 623					}
 624					message.setStatus(Message.STATUS_WAITING);
 625				}
 626			} else {
 627				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 628					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 629						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 630						message.setStatus(Message.STATUS_WAITING);
 631					} else if (conv.hasValidOtrSession()) {
 632						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 633							packet = mMessageGenerator.generateOtrChat(message);
 634							send = true;
 635						} else {
 636							message.setStatus(Message.STATUS_WAITING);
 637							conv.startOtrIfNeeded();
 638						}
 639					} else {
 640						message.setStatus(Message.STATUS_WAITING);
 641					}
 642				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 643					message.getConversation().endOtrIfNeeded();
 644					failWaitingOtrMessages(message.getConversation());
 645					packet = mMessageGenerator.generatePgpChat(message);
 646					send = true;
 647				} else {
 648					message.getConversation().endOtrIfNeeded();
 649					failWaitingOtrMessages(message.getConversation());
 650					packet = mMessageGenerator.generateChat(message);
 651					send = true;
 652				}
 653			}
 654			if (!account.getXmppConnection().getFeatures().sm()
 655					&& conv.getMode() != Conversation.MODE_MULTI) {
 656				message.setStatus(Message.STATUS_SEND);
 657					}
 658		} else {
 659			message.setStatus(Message.STATUS_WAITING);
 660			if (message.getType() == Message.TYPE_TEXT) {
 661				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 662					String pgpBody = message.getEncryptedBody();
 663					String decryptedBody = message.getBody();
 664					message.setBody(pgpBody);
 665					message.setEncryption(Message.ENCRYPTION_PGP);
 666					databaseBackend.createMessage(message);
 667					saveInDb = false;
 668					message.setBody(decryptedBody);
 669					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 670				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 671					if (!conv.hasValidOtrSession()
 672							&& message.getCounterpart() != null) {
 673						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 674							}
 675				}
 676			}
 677
 678		}
 679		conv.add(message);
 680		if (saveInDb) {
 681			if (message.getEncryption() == Message.ENCRYPTION_NONE
 682					|| saveEncryptedMessages()) {
 683				databaseBackend.createMessage(message);
 684					}
 685		}
 686		if ((send) && (packet != null)) {
 687			sendMessagePacket(account, packet);
 688		}
 689		updateConversationUi();
 690	}
 691
 692	private void sendUnsendMessages(Conversation conversation) {
 693		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 694			int status = conversation.getMessages().get(i).getStatus();
 695			if (status == Message.STATUS_WAITING) {
 696				resendMessage(conversation.getMessages().get(i));
 697			}
 698		}
 699	}
 700
 701	private void resendMessage(Message message) {
 702		Account account = message.getConversation().getAccount();
 703		MessagePacket packet = null;
 704		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 705			Presences presences = message.getConversation().getContact()
 706				.getPresences();
 707			if (!message.getConversation().hasValidOtrSession()) {
 708				if ((message.getCounterpart() != null)
 709						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 710					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 711				} else {
 712					if (presences.size() == 1) {
 713						String presence = presences.asStringArray()[0];
 714						message.getConversation().startOtrSession(presence, true);
 715					}
 716				}
 717			} else {
 718				if (message.getConversation().getOtrSession()
 719						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 720					try {
 721						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 722						if (message.getType() == Message.TYPE_TEXT) {
 723							packet = mMessageGenerator.generateOtrChat(message,
 724									true);
 725						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 726							mJingleConnectionManager.createNewConnection(message);
 727						}
 728					} catch (InvalidJidException e) {
 729
 730					}
 731						}
 732			}
 733		} else if (message.getType() == Message.TYPE_TEXT) {
 734			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 735				packet = mMessageGenerator.generateChat(message, true);
 736			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 737					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 738				packet = mMessageGenerator.generatePgpChat(message, true);
 739					}
 740		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 741			Contact contact = message.getConversation().getContact();
 742			Presences presences = contact.getPresences();
 743			if ((message.getCounterpart() != null)
 744					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 745				markMessage(message, Message.STATUS_OFFERED);
 746				mJingleConnectionManager.createNewConnection(message);
 747			} else {
 748				if (presences.size() == 1) {
 749					String presence = presences.asStringArray()[0];
 750					try {
 751						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 752					} catch (InvalidJidException e) {
 753						return;
 754					}
 755					markMessage(message, Message.STATUS_OFFERED);
 756					mJingleConnectionManager.createNewConnection(message);
 757				}
 758			}
 759		}
 760		if (packet != null) {
 761			if (!account.getXmppConnection().getFeatures().sm()
 762					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 763				markMessage(message, Message.STATUS_SEND);
 764			} else {
 765				markMessage(message, Message.STATUS_UNSEND);
 766			}
 767			sendMessagePacket(account, packet);
 768		}
 769	}
 770
 771	public void fetchRosterFromServer(Account account) {
 772		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 773		if (!"".equals(account.getRosterVersion())) {
 774			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 775					+ ": fetching roster version " + account.getRosterVersion());
 776		} else {
 777			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 778		}
 779		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 780				account.getRosterVersion());
 781		account.getXmppConnection().sendIqPacket(iqPacket,
 782				new OnIqPacketReceived() {
 783
 784					@Override
 785					public void onIqPacketReceived(final Account account,
 786							IqPacket packet) {
 787						Element query = packet.findChild("query");
 788						if (query != null) {
 789							account.getRoster().markAllAsNotInRoster();
 790							mIqParser.rosterItems(account, query);
 791						}
 792					}
 793				});
 794	}
 795
 796	public void fetchBookmarks(Account account) {
 797		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 798		Element query = iqPacket.query("jabber:iq:private");
 799		query.addChild("storage", "storage:bookmarks");
 800		OnIqPacketReceived callback = new OnIqPacketReceived() {
 801
 802			@Override
 803			public void onIqPacketReceived(Account account, IqPacket packet) {
 804				Element query = packet.query();
 805				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 806				Element storage = query.findChild("storage",
 807						"storage:bookmarks");
 808				if (storage != null) {
 809					for (Element item : storage.getChildren()) {
 810						if (item.getName().equals("conference")) {
 811							Bookmark bookmark = Bookmark.parse(item, account);
 812							bookmarks.add(bookmark);
 813							Conversation conversation = find(bookmark);
 814							if (conversation != null) {
 815								conversation.setBookmark(bookmark);
 816							} else {
 817								if (bookmark.autojoin()) {
 818									conversation = findOrCreateConversation(
 819											account, bookmark.getJid(), true);
 820									conversation.setBookmark(bookmark);
 821									joinMuc(conversation);
 822								}
 823							}
 824						}
 825					}
 826				}
 827				account.setBookmarks(bookmarks);
 828			}
 829		};
 830		sendIqPacket(account, iqPacket, callback);
 831
 832	}
 833
 834	public void pushBookmarks(Account account) {
 835		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 836		Element query = iqPacket.query("jabber:iq:private");
 837		Element storage = query.addChild("storage", "storage:bookmarks");
 838		for (Bookmark bookmark : account.getBookmarks()) {
 839			storage.addChild(bookmark);
 840		}
 841		sendIqPacket(account, iqPacket, null);
 842	}
 843
 844	private void mergePhoneContactsWithRoster() {
 845		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 846				new OnPhoneContactsLoadedListener() {
 847					@Override
 848					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 849						for (Account account : accounts) {
 850							account.getRoster().clearSystemAccounts();
 851						}
 852						for (Bundle phoneContact : phoneContacts) {
 853							for (Account account : accounts) {
 854								Jid jid;
 855								try {
 856									jid = Jid.fromString(phoneContact.getString("jid"));
 857								} catch (final InvalidJidException e) {
 858									// TODO: Warn if contact import fails here?
 859									break;
 860								}
 861								final Contact contact = account.getRoster()
 862									.getContact(jid);
 863								String systemAccount = phoneContact
 864									.getInt("phoneid")
 865									+ "#"
 866									+ phoneContact.getString("lookup");
 867								contact.setSystemAccount(systemAccount);
 868								contact.setPhotoUri(phoneContact
 869										.getString("photouri"));
 870								contact.setSystemName(phoneContact
 871										.getString("displayname"));
 872								getAvatarService().clear(contact);
 873							}
 874						}
 875					}
 876				});
 877	}
 878
 879	private void initConversations() {
 880		synchronized (this.conversations) {
 881			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 882			for (Account account : this.accounts) {
 883				accountLookupTable.put(account.getUuid(), account);
 884			}
 885			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 886			for (Conversation conv : this.conversations) {
 887				Account account = accountLookupTable.get(conv.getAccountUuid());
 888				conv.setAccount(account);
 889				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 890				checkDeletedFiles(conv);
 891			}
 892		}
 893	}
 894
 895	public List<Conversation> getConversations() {
 896		return this.conversations;
 897	}
 898
 899	private void checkDeletedFiles(Conversation conversation) {
 900		for (Message message : conversation.getMessages()) {
 901			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 902					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 903				if (!getFileBackend().isFileAvailable(message)) {
 904					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 905				}
 906					}
 907		}
 908	}
 909
 910	private void markFileDeleted(String uuid) {
 911		for (Conversation conversation : getConversations()) {
 912			for (Message message : conversation.getMessages()) {
 913				if (message.getType() == Message.TYPE_IMAGE
 914						&& message.getEncryption() != Message.ENCRYPTION_PGP
 915						&& message.getUuid().equals(uuid)) {
 916					if (!getFileBackend().isFileAvailable(message)) {
 917						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 918						updateConversationUi();
 919					}
 920					return;
 921						}
 922			}
 923		}
 924	}
 925
 926	public void populateWithOrderedConversations(final List<Conversation> list) {
 927		populateWithOrderedConversations(list, true);
 928	}
 929
 930	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 931		list.clear();
 932		if (includeConferences) {
 933			list.addAll(getConversations());
 934		} else {
 935			for (Conversation conversation : getConversations()) {
 936				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 937					list.add(conversation);
 938				}
 939			}
 940		}
 941		Collections.sort(list, new Comparator<Conversation>() {
 942			@Override
 943			public int compare(Conversation lhs, Conversation rhs) {
 944				Message left = lhs.getLatestMessage();
 945				Message right = rhs.getLatestMessage();
 946				if (left.getTimeSent() > right.getTimeSent()) {
 947					return -1;
 948				} else if (left.getTimeSent() < right.getTimeSent()) {
 949					return 1;
 950				} else {
 951					return 0;
 952				}
 953			}
 954		});
 955	}
 956
 957	public int loadMoreMessages(Conversation conversation, long timestamp) {
 958		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 959				timestamp);
 960		for (Message message : messages) {
 961			message.setConversation(conversation);
 962		}
 963		conversation.addAll(0, messages);
 964		return messages.size();
 965	}
 966
 967	public List<Account> getAccounts() {
 968		return this.accounts;
 969	}
 970
 971	public Conversation find(List<Conversation> haystack, Contact contact) {
 972		for (Conversation conversation : haystack) {
 973			if (conversation.getContact() == contact) {
 974				return conversation;
 975			}
 976		}
 977		return null;
 978	}
 979
 980	public Conversation find(final List<Conversation> haystack,
 981			final Account account,
 982			final Jid jid) {
 983		for (Conversation conversation : haystack) {
 984			if ((account == null || conversation.getAccount() == account)
 985					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 986				return conversation;
 987					}
 988		}
 989		return null;
 990	}
 991
 992	public Conversation findOrCreateConversation(final Account account, final Jid jid,
 993			final boolean muc) {
 994		synchronized (this.conversations) {
 995			Conversation conversation = find(account, jid);
 996			if (conversation != null) {
 997				return conversation;
 998			}
 999			conversation = databaseBackend.findConversation(account, jid);
1000			if (conversation != null) {
1001				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1002				conversation.setAccount(account);
1003				if (muc) {
1004					conversation.setMode(Conversation.MODE_MULTI);
1005				} else {
1006					conversation.setMode(Conversation.MODE_SINGLE);
1007				}
1008				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1009				this.databaseBackend.updateConversation(conversation);
1010			} else {
1011				String conversationName;
1012				Contact contact = account.getRoster().getContact(jid);
1013				if (contact != null) {
1014					conversationName = contact.getDisplayName();
1015				} else {
1016					conversationName = jid.getLocalpart();
1017				}
1018				if (muc) {
1019					conversation = new Conversation(conversationName, account, jid,
1020							Conversation.MODE_MULTI);
1021				} else {
1022					conversation = new Conversation(conversationName, account, jid,
1023							Conversation.MODE_SINGLE);
1024				}
1025				this.databaseBackend.createConversation(conversation);
1026			}
1027			this.conversations.add(conversation);
1028			updateConversationUi();
1029			return conversation;
1030		}
1031	}
1032
1033	public void archiveConversation(Conversation conversation) {
1034		synchronized (this.conversations) {
1035			if (conversation.getMode() == Conversation.MODE_MULTI) {
1036				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1037					Bookmark bookmark = conversation.getBookmark();
1038					if (bookmark != null && bookmark.autojoin()) {
1039						bookmark.setAutojoin(false);
1040						pushBookmarks(bookmark.getAccount());
1041					}
1042				}
1043				leaveMuc(conversation);
1044			} else {
1045				conversation.endOtrIfNeeded();
1046			}
1047			this.databaseBackend.updateConversation(conversation);
1048			this.conversations.remove(conversation);
1049			updateConversationUi();
1050		}
1051	}
1052
1053	public void clearConversationHistory(Conversation conversation) {
1054		this.databaseBackend.deleteMessagesInConversation(conversation);
1055		conversation.getMessages().clear();
1056		updateConversationUi();
1057	}
1058
1059	public void createAccount(Account account) {
1060		account.initOtrEngine(this);
1061		databaseBackend.createAccount(account);
1062		this.accounts.add(account);
1063		this.reconnectAccount(account, false);
1064		updateAccountUi();
1065	}
1066
1067	public void updateAccount(Account account) {
1068		this.statusListener.onStatusChanged(account);
1069		databaseBackend.updateAccount(account);
1070		reconnectAccount(account, false);
1071		updateAccountUi();
1072		getNotificationService().updateErrorNotification();
1073	}
1074
1075	public void deleteAccount(Account account) {
1076		synchronized (this.conversations) {
1077			for (Conversation conversation : conversations) {
1078				if (conversation.getAccount() == account) {
1079					if (conversation.getMode() == Conversation.MODE_MULTI) {
1080						leaveMuc(conversation);
1081					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1082						conversation.endOtrIfNeeded();
1083					}
1084					conversations.remove(conversation);
1085				}
1086			}
1087			if (account.getXmppConnection() != null) {
1088				this.disconnect(account, true);
1089			}
1090			databaseBackend.deleteAccount(account);
1091			this.accounts.remove(account);
1092			updateAccountUi();
1093			getNotificationService().updateErrorNotification();
1094		}
1095	}
1096
1097	private void removeStaleListeners() {
1098		boolean removedListener = false;
1099		synchronized (this.convChangedListenerCount) {
1100			if (this.mOnConversationUpdate != null) {
1101				this.mOnConversationUpdate = null;
1102				this.convChangedListenerCount = 0;
1103				this.mNotificationService.setIsInForeground(false);
1104				removedListener = true;
1105			}
1106		}
1107		synchronized (this.accountChangedListenerCount) {
1108			if (this.mOnAccountUpdate != null) {
1109				this.mOnAccountUpdate = null;
1110				this.accountChangedListenerCount = 0;
1111				removedListener = true;
1112			}
1113		}
1114		synchronized (this.rosterChangedListenerCount) {
1115			if (this.mOnRosterUpdate != null) {
1116				this.mOnRosterUpdate = null;
1117				this.rosterChangedListenerCount = 0;
1118				removedListener = true;
1119			}
1120		}
1121		synchronized (this.mucRosterChangedListenerCount) {
1122			if (this.mOnMucRosterUpdate != null) {
1123				this.mOnMucRosterUpdate = null;
1124				this.mucRosterChangedListenerCount = 0;
1125				removedListener = true;
1126			}
1127		}
1128		if (removedListener) {
1129			final String msg = "removed stale listeners";
1130			Log.d(Config.LOGTAG, msg);
1131			checkListeners();
1132			try {
1133				OutputStream os = openFileOutput("stacktrace.txt", MODE_PRIVATE);
1134				os.write(msg.getBytes());
1135				os.flush();
1136				os.close();
1137			} catch (final FileNotFoundException ignored) {
1138
1139			} catch (final IOException ignored) {
1140			}
1141		}
1142	}
1143
1144	public void setOnConversationListChangedListener(
1145			OnConversationUpdate listener) {
1146		/*if (!isScreenOn()) {
1147			Log.d(Config.LOGTAG,
1148			"ignoring setOnConversationListChangedListener");
1149			return;
1150			}*/
1151		synchronized (this.convChangedListenerCount) {
1152			if (checkListeners()) {
1153				switchToForeground();
1154			}
1155			this.mOnConversationUpdate = listener;
1156			this.mNotificationService.setIsInForeground(true);
1157			this.convChangedListenerCount++;
1158		}
1159			}
1160
1161	public void removeOnConversationListChangedListener() {
1162		synchronized (this.convChangedListenerCount) {
1163			this.convChangedListenerCount--;
1164			if (this.convChangedListenerCount <= 0) {
1165				this.convChangedListenerCount = 0;
1166				this.mOnConversationUpdate = null;
1167				this.mNotificationService.setIsInForeground(false);
1168				if (checkListeners()) {
1169					switchToBackground();
1170				}
1171			}
1172		}
1173	}
1174
1175	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1176		/*if (!isScreenOn()) {
1177			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1178			return;
1179			}*/
1180		synchronized (this.accountChangedListenerCount) {
1181			if (checkListeners()) {
1182				switchToForeground();
1183			}
1184			this.mOnAccountUpdate = listener;
1185			this.accountChangedListenerCount++;
1186		}
1187	}
1188
1189	public void removeOnAccountListChangedListener() {
1190		synchronized (this.accountChangedListenerCount) {
1191			this.accountChangedListenerCount--;
1192			if (this.accountChangedListenerCount <= 0) {
1193				this.mOnAccountUpdate = null;
1194				this.accountChangedListenerCount = 0;
1195				if (checkListeners()) {
1196					switchToBackground();
1197				}
1198			}
1199		}
1200	}
1201
1202	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1203		/*if (!isScreenOn()) {
1204			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1205			return;
1206			}*/
1207		synchronized (this.rosterChangedListenerCount) {
1208			if (checkListeners()) {
1209				switchToForeground();
1210			}
1211			this.mOnRosterUpdate = listener;
1212			this.rosterChangedListenerCount++;
1213		}
1214	}
1215
1216	public void removeOnRosterUpdateListener() {
1217		synchronized (this.rosterChangedListenerCount) {
1218			this.rosterChangedListenerCount--;
1219			if (this.rosterChangedListenerCount <= 0) {
1220				this.rosterChangedListenerCount = 0;
1221				this.mOnRosterUpdate = null;
1222				if (checkListeners()) {
1223					switchToBackground();
1224				}
1225			}
1226		}
1227	}
1228
1229	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1230		synchronized (this.mucRosterChangedListenerCount) {
1231			if (checkListeners()) {
1232				switchToForeground();
1233			}
1234			this.mOnMucRosterUpdate = listener;
1235			this.mucRosterChangedListenerCount++;
1236		}
1237	}
1238
1239	public void removeOnMucRosterUpdateListener() {
1240		synchronized (this.mucRosterChangedListenerCount) {
1241			this.mucRosterChangedListenerCount--;
1242			if (this.mucRosterChangedListenerCount <= 0) {
1243				this.mucRosterChangedListenerCount = 0;
1244				this.mOnMucRosterUpdate = null;
1245				if (checkListeners()) {
1246					switchToBackground();
1247				}
1248			}
1249		}
1250	}
1251
1252	private boolean checkListeners() {
1253		return (this.mOnAccountUpdate == null
1254				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1255	}
1256
1257	private void switchToForeground() {
1258		for (Account account : getAccounts()) {
1259			if (account.getStatus() == Account.State.ONLINE) {
1260				XmppConnection connection = account.getXmppConnection();
1261				if (connection != null && connection.getFeatures().csi()) {
1262					connection.sendActive();
1263				}
1264			}
1265		}
1266		Log.d(Config.LOGTAG, "app switched into foreground");
1267	}
1268
1269	private void switchToBackground() {
1270		for (Account account : getAccounts()) {
1271			if (account.getStatus() == Account.State.ONLINE) {
1272				XmppConnection connection = account.getXmppConnection();
1273				if (connection != null && connection.getFeatures().csi()) {
1274					connection.sendInactive();
1275				}
1276			}
1277		}
1278		this.mNotificationService.setIsInForeground(false);
1279		Log.d(Config.LOGTAG, "app switched into background");
1280	}
1281
1282	private boolean isScreenOn() {
1283		PowerManager pm = (PowerManager) this
1284			.getSystemService(Context.POWER_SERVICE);
1285		return pm.isScreenOn();
1286	}
1287
1288	public void connectMultiModeConversations(Account account) {
1289		List<Conversation> conversations = getConversations();
1290		for (Conversation conversation : conversations) {
1291			if ((conversation.getMode() == Conversation.MODE_MULTI)
1292					&& (conversation.getAccount() == account)) {
1293				joinMuc(conversation);
1294					}
1295		}
1296	}
1297
1298	public void joinMuc(Conversation conversation) {
1299		Account account = conversation.getAccount();
1300		account.pendingConferenceJoins.remove(conversation);
1301		account.pendingConferenceLeaves.remove(conversation);
1302		if (account.getStatus() == Account.State.ONLINE) {
1303			Log.d(Config.LOGTAG,
1304					"joining conversation " + conversation.getContactJid());
1305			String nick = conversation.getMucOptions().getProposedNick();
1306			Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1307			PresencePacket packet = new PresencePacket();
1308			packet.setFrom(conversation.getAccount().getJid());
1309			packet.setTo(joinJid);
1310			Element x = new Element("x");
1311			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1312			if (conversation.getMucOptions().getPassword() != null) {
1313				Element password = x.addChild("password");
1314				password.setContent(conversation.getMucOptions().getPassword());
1315			}
1316			String sig = account.getPgpSignature();
1317			if (sig != null) {
1318				packet.addChild("status").setContent("online");
1319				packet.addChild("x", "jabber:x:signed").setContent(sig);
1320			}
1321			if (conversation.getMessages().size() != 0) {
1322				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1323						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1324				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1325				Date date = new Date(conversation.getLatestMessage()
1326						.getTimeSent() + 1000);
1327				x.addChild("history").setAttribute("since",
1328						mDateFormat.format(date));
1329			}
1330			packet.addChild(x);
1331			sendPresencePacket(account, packet);
1332			if (!joinJid.equals(conversation.getContactJid())) {
1333				conversation.setContactJid(joinJid);
1334				databaseBackend.updateConversation(conversation);
1335			}
1336		} else {
1337			account.pendingConferenceJoins.add(conversation);
1338		}
1339	}
1340
1341	public void providePasswordForMuc(Conversation conversation, String password) {
1342		if (conversation.getMode() == Conversation.MODE_MULTI) {
1343			conversation.getMucOptions().setPassword(password);
1344			if (conversation.getBookmark() != null) {
1345				conversation.getBookmark().setAutojoin(true);
1346				pushBookmarks(conversation.getAccount());
1347			}
1348			databaseBackend.updateConversation(conversation);
1349			joinMuc(conversation);
1350		}
1351	}
1352
1353	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1354		final MucOptions options = conversation.getMucOptions();
1355		final Jid joinJid = options.createJoinJid(nick);
1356		if (options.online()) {
1357			Account account = conversation.getAccount();
1358			options.setOnRenameListener(new OnRenameListener() {
1359
1360				@Override
1361				public void onSuccess() {
1362					conversation.setContactJid(joinJid);
1363					databaseBackend.updateConversation(conversation);
1364					Bookmark bookmark = conversation.getBookmark();
1365					if (bookmark != null) {
1366						bookmark.setNick(nick);
1367						pushBookmarks(bookmark.getAccount());
1368					}
1369					callback.success(conversation);
1370				}
1371
1372				@Override
1373				public void onFailure() {
1374					callback.error(R.string.nick_in_use,conversation);
1375				}
1376			});
1377
1378			PresencePacket packet = new PresencePacket();
1379			packet.setTo(joinJid);
1380			packet.setFrom(conversation.getAccount().getJid());
1381
1382			String sig = account.getPgpSignature();
1383			if (sig != null) {
1384				packet.addChild("status").setContent("online");
1385				packet.addChild("x", "jabber:x:signed").setContent(sig);
1386			}
1387			sendPresencePacket(account, packet);
1388		} else {
1389			conversation.setContactJid(joinJid);
1390			databaseBackend.updateConversation(conversation);
1391			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1392				Bookmark bookmark = conversation.getBookmark();
1393				if (bookmark != null) {
1394					bookmark.setNick(nick);
1395					pushBookmarks(bookmark.getAccount());
1396				}
1397				joinMuc(conversation);
1398			}
1399		}
1400	}
1401
1402	public void leaveMuc(Conversation conversation) {
1403		Account account = conversation.getAccount();
1404		account.pendingConferenceJoins.remove(conversation);
1405		account.pendingConferenceLeaves.remove(conversation);
1406		if (account.getStatus() == Account.State.ONLINE) {
1407			PresencePacket packet = new PresencePacket();
1408			packet.setTo(conversation.getContactJid());
1409			packet.setFrom(conversation.getAccount().getJid());
1410			packet.setAttribute("type", "unavailable");
1411			sendPresencePacket(conversation.getAccount(), packet);
1412			conversation.getMucOptions().setOffline();
1413			conversation.deregisterWithBookmark();
1414			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1415					+ ": leaving muc " + conversation.getContactJid());
1416		} else {
1417			account.pendingConferenceLeaves.add(conversation);
1418		}
1419	}
1420
1421	private String findConferenceServer(final Account account) {
1422		String server;
1423		if (account.getXmppConnection() != null) {
1424			server = account.getXmppConnection().getMucServer();
1425			if (server != null) {
1426				return server;
1427			}
1428		}
1429		for(Account other : getAccounts()) {
1430			if (other != account && other.getXmppConnection() != null) {
1431				server = other.getXmppConnection().getMucServer();
1432				if (server != null) {
1433					return server;
1434				}
1435			}
1436		}
1437		return null;
1438	}
1439
1440	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1441		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1442		if (account.getStatus() == Account.State.ONLINE) {
1443			try {
1444				String server = findConferenceServer(account);
1445				if (server == null) {
1446					if (callback != null) {
1447						callback.error(R.string.no_conference_server_found,null);
1448					}
1449					return;
1450				}
1451				String name = new BigInteger(75,getRNG()).toString(32);
1452				Jid jid = Jid.fromParts(name,server,null);
1453				final Conversation conversation = findOrCreateConversation(account, jid, true);
1454				joinMuc(conversation);
1455				Bundle options = new Bundle();
1456				options.putString("muc#roomconfig_persistentroom", "1");
1457				options.putString("muc#roomconfig_membersonly", "1");
1458				options.putString("muc#roomconfig_publicroom", "0");
1459				options.putString("muc#roomconfig_whois", "anyone");
1460				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1461					@Override
1462					public void onPushSucceeded() {
1463						for(Jid invite : jids) {
1464							invite(conversation,invite);
1465						}
1466						if (callback != null) {
1467							callback.success(conversation);
1468						}
1469					}
1470
1471					@Override
1472					public void onPushFailed() {
1473						if (callback != null) {
1474							callback.error(R.string.conference_creation_failed, conversation);
1475						}
1476					}
1477				});
1478
1479			} catch (InvalidJidException e) {
1480				if (callback != null) {
1481					callback.error(R.string.conference_creation_failed, null);
1482				}
1483			}
1484		} else {
1485			if (callback != null) {
1486				callback.error(R.string.not_connected_try_again,null);
1487			}
1488		}
1489	}
1490
1491	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1492		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1493		request.setTo(conversation.getContactJid().toBareJid());
1494		request.query("http://jabber.org/protocol/muc#owner");
1495		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1496			@Override
1497			public void onIqPacketReceived(Account account, IqPacket packet) {
1498				if (packet.getType() != IqPacket.TYPE_ERROR) {
1499					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1500					for (Field field : data.getFields()) {
1501						if (options.containsKey(field.getName())) {
1502							field.setValue(options.getString(field.getName()));
1503						}
1504					}
1505					data.submit();
1506					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1507					set.setTo(conversation.getContactJid().toBareJid());
1508					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1509					sendIqPacket(account, set, new OnIqPacketReceived() {
1510						@Override
1511						public void onIqPacketReceived(Account account, IqPacket packet) {
1512							if (packet.getType() == IqPacket.TYPE_RESULT) {
1513								if (callback != null) {
1514									callback.onPushSucceeded();
1515								}
1516							} else {
1517								if (callback != null) {
1518									callback.onPushFailed();
1519								}
1520							}
1521						}
1522					});
1523				} else {
1524					if (callback != null) {
1525						callback.onPushFailed();
1526					}
1527				}
1528			}
1529		});
1530	}
1531
1532	public void disconnect(Account account, boolean force) {
1533		if ((account.getStatus() == Account.State.ONLINE)
1534				|| (account.getStatus() == Account.State.DISABLED)) {
1535			if (!force) {
1536				List<Conversation> conversations = getConversations();
1537				for (Conversation conversation : conversations) {
1538					if (conversation.getAccount() == account) {
1539						if (conversation.getMode() == Conversation.MODE_MULTI) {
1540							leaveMuc(conversation);
1541						} else {
1542							if (conversation.endOtrIfNeeded()) {
1543								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1544										+ ": ended otr session with "
1545										+ conversation.getContactJid());
1546							}
1547						}
1548					}
1549				}
1550			}
1551			account.getXmppConnection().disconnect(force);
1552				}
1553	}
1554
1555	@Override
1556	public IBinder onBind(Intent intent) {
1557		return mBinder;
1558	}
1559
1560	public void updateMessage(Message message) {
1561		databaseBackend.updateMessage(message);
1562		updateConversationUi();
1563	}
1564
1565	protected void syncDirtyContacts(Account account) {
1566		for (Contact contact : account.getRoster().getContacts()) {
1567			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1568				pushContactToServer(contact);
1569			}
1570			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1571				deleteContactOnServer(contact);
1572			}
1573		}
1574	}
1575
1576	public void createContact(Contact contact) {
1577		SharedPreferences sharedPref = getPreferences();
1578		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1579		if (autoGrant) {
1580			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1581			contact.setOption(Contact.Options.ASKING);
1582		}
1583		pushContactToServer(contact);
1584	}
1585
1586	public void onOtrSessionEstablished(Conversation conversation) {
1587		Account account = conversation.getAccount();
1588		List<Message> messages = conversation.getMessages();
1589		Session otrSession = conversation.getOtrSession();
1590		Log.d(Config.LOGTAG,
1591				account.getJid().toBareJid() + " otr session established with "
1592				+ conversation.getContactJid() + "/"
1593				+ otrSession.getSessionID().getUserID());
1594		for (Message msg : messages) {
1595			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1596					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1597				SessionID id = otrSession.getSessionID();
1598				try {
1599					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1600				} catch (InvalidJidException e) {
1601					break;
1602				}
1603				if (msg.getType() == Message.TYPE_TEXT) {
1604					MessagePacket outPacket = mMessageGenerator
1605						.generateOtrChat(msg, true);
1606					if (outPacket != null) {
1607						msg.setStatus(Message.STATUS_SEND);
1608						databaseBackend.updateMessage(msg);
1609						sendMessagePacket(account, outPacket);
1610					}
1611				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1612					mJingleConnectionManager.createNewConnection(msg);
1613				}
1614					}
1615		}
1616		updateConversationUi();
1617	}
1618
1619	public boolean renewSymmetricKey(Conversation conversation) {
1620		Account account = conversation.getAccount();
1621		byte[] symmetricKey = new byte[32];
1622		this.mRandom.nextBytes(symmetricKey);
1623		Session otrSession = conversation.getOtrSession();
1624		if (otrSession != null) {
1625			MessagePacket packet = new MessagePacket();
1626			packet.setType(MessagePacket.TYPE_CHAT);
1627			packet.setFrom(account.getJid());
1628			packet.addChild("private", "urn:xmpp:carbons:2");
1629			packet.addChild("no-copy", "urn:xmpp:hints");
1630			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1631					+ otrSession.getSessionID().getUserID());
1632			try {
1633				packet.setBody(otrSession
1634						.transformSending(CryptoHelper.FILETRANSFER
1635							+ CryptoHelper.bytesToHex(symmetricKey)));
1636				sendMessagePacket(account, packet);
1637				conversation.setSymmetricKey(symmetricKey);
1638				return true;
1639			} catch (OtrException e) {
1640				return false;
1641			}
1642		}
1643		return false;
1644	}
1645
1646	public void pushContactToServer(Contact contact) {
1647		contact.resetOption(Contact.Options.DIRTY_DELETE);
1648		contact.setOption(Contact.Options.DIRTY_PUSH);
1649		Account account = contact.getAccount();
1650		if (account.getStatus() == Account.State.ONLINE) {
1651			boolean ask = contact.getOption(Contact.Options.ASKING);
1652			boolean sendUpdates = contact
1653				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1654				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1655			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1656			iq.query("jabber:iq:roster").addChild(contact.asElement());
1657			account.getXmppConnection().sendIqPacket(iq, null);
1658			if (sendUpdates) {
1659				sendPresencePacket(account,
1660						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1661			}
1662			if (ask) {
1663				sendPresencePacket(account,
1664						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1665			}
1666		}
1667	}
1668
1669	public void publishAvatar(Account account, Uri image,
1670			final UiCallback<Avatar> callback) {
1671		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1672		final int size = Config.AVATAR_SIZE;
1673		final Avatar avatar = getFileBackend()
1674			.getPepAvatar(image, size, format);
1675		if (avatar != null) {
1676			avatar.height = size;
1677			avatar.width = size;
1678			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1679				avatar.type = "image/webp";
1680			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1681				avatar.type = "image/jpeg";
1682			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1683				avatar.type = "image/png";
1684			}
1685			if (!getFileBackend().save(avatar)) {
1686				callback.error(R.string.error_saving_avatar, avatar);
1687				return;
1688			}
1689			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1690			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1691
1692				@Override
1693				public void onIqPacketReceived(Account account, IqPacket result) {
1694					if (result.getType() == IqPacket.TYPE_RESULT) {
1695						IqPacket packet = XmppConnectionService.this.mIqGenerator
1696							.publishAvatarMetadata(avatar);
1697						sendIqPacket(account, packet, new OnIqPacketReceived() {
1698
1699							@Override
1700							public void onIqPacketReceived(Account account,
1701									IqPacket result) {
1702								if (result.getType() == IqPacket.TYPE_RESULT) {
1703									if (account.setAvatar(avatar.getFilename())) {
1704										databaseBackend.updateAccount(account);
1705									}
1706									callback.success(avatar);
1707								} else {
1708									callback.error(
1709											R.string.error_publish_avatar_server_reject,
1710											avatar);
1711								}
1712							}
1713						});
1714					} else {
1715						callback.error(
1716								R.string.error_publish_avatar_server_reject,
1717								avatar);
1718					}
1719				}
1720			});
1721		} else {
1722			callback.error(R.string.error_publish_avatar_converting, null);
1723		}
1724	}
1725
1726	public void fetchAvatar(Account account, Avatar avatar) {
1727		fetchAvatar(account, avatar, null);
1728	}
1729
1730	public void fetchAvatar(Account account, final Avatar avatar,
1731			final UiCallback<Avatar> callback) {
1732		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1733		sendIqPacket(account, packet, new OnIqPacketReceived() {
1734
1735			@Override
1736			public void onIqPacketReceived(Account account, IqPacket result) {
1737				final String ERROR = account.getJid().toBareJid()
1738					+ ": fetching avatar for " + avatar.owner + " failed ";
1739				if (result.getType() == IqPacket.TYPE_RESULT) {
1740					avatar.image = mIqParser.avatarData(result);
1741					if (avatar.image != null) {
1742						if (getFileBackend().save(avatar)) {
1743							if (account.getJid().toBareJid().equals(avatar.owner)) {
1744								if (account.setAvatar(avatar.getFilename())) {
1745									databaseBackend.updateAccount(account);
1746								}
1747								getAvatarService().clear(account);
1748								updateConversationUi();
1749								updateAccountUi();
1750							} else {
1751								Contact contact = account.getRoster()
1752									.getContact(avatar.owner);
1753								contact.setAvatar(avatar.getFilename());
1754								getAvatarService().clear(contact);
1755								updateConversationUi();
1756								updateRosterUi();
1757							}
1758							if (callback != null) {
1759								callback.success(avatar);
1760							}
1761							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1762									+ ": succesfully fetched avatar for "
1763									+ avatar.owner);
1764							return;
1765						}
1766					} else {
1767
1768						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1769					}
1770				} else {
1771					Element error = result.findChild("error");
1772					if (error == null) {
1773						Log.d(Config.LOGTAG, ERROR + "(server error)");
1774					} else {
1775						Log.d(Config.LOGTAG, ERROR + error.toString());
1776					}
1777				}
1778				if (callback != null) {
1779					callback.error(0, null);
1780				}
1781
1782			}
1783		});
1784	}
1785
1786	public void checkForAvatar(Account account,
1787			final UiCallback<Avatar> callback) {
1788		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1789		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1790
1791			@Override
1792			public void onIqPacketReceived(Account account, IqPacket packet) {
1793				if (packet.getType() == IqPacket.TYPE_RESULT) {
1794					Element pubsub = packet.findChild("pubsub",
1795							"http://jabber.org/protocol/pubsub");
1796					if (pubsub != null) {
1797						Element items = pubsub.findChild("items");
1798						if (items != null) {
1799							Avatar avatar = Avatar.parseMetadata(items);
1800							if (avatar != null) {
1801								avatar.owner = account.getJid().toBareJid();
1802								if (fileBackend.isAvatarCached(avatar)) {
1803									if (account.setAvatar(avatar.getFilename())) {
1804										databaseBackend.updateAccount(account);
1805									}
1806									getAvatarService().clear(account);
1807									callback.success(avatar);
1808								} else {
1809									fetchAvatar(account, avatar, callback);
1810								}
1811								return;
1812							}
1813						}
1814					}
1815				}
1816				callback.error(0, null);
1817			}
1818		});
1819	}
1820
1821	public void deleteContactOnServer(Contact contact) {
1822		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1823		contact.resetOption(Contact.Options.DIRTY_PUSH);
1824		contact.setOption(Contact.Options.DIRTY_DELETE);
1825		Account account = contact.getAccount();
1826		if (account.getStatus() == Account.State.ONLINE) {
1827			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1828			Element item = iq.query("jabber:iq:roster").addChild("item");
1829			item.setAttribute("jid", contact.getJid().toString());
1830			item.setAttribute("subscription", "remove");
1831			account.getXmppConnection().sendIqPacket(iq, null);
1832		}
1833	}
1834
1835	public void updateConversation(Conversation conversation) {
1836		this.databaseBackend.updateConversation(conversation);
1837	}
1838
1839	public void reconnectAccount(final Account account, final boolean force) {
1840		new Thread(new Runnable() {
1841
1842			@Override
1843			public void run() {
1844				if (account.getXmppConnection() != null) {
1845					disconnect(account, force);
1846				}
1847				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1848					if (account.getXmppConnection() == null) {
1849						account.setXmppConnection(createConnection(account));
1850					}
1851					Thread thread = new Thread(account.getXmppConnection());
1852					thread.start();
1853					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1854							false);
1855				} else {
1856					account.getRoster().clearPresences();
1857					account.setXmppConnection(null);
1858				}
1859			}
1860		}).start();
1861	}
1862
1863	public void invite(Conversation conversation, Jid contact) {
1864		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1865		sendMessagePacket(conversation.getAccount(), packet);
1866	}
1867
1868	public void resetSendingToWaiting(Account account) {
1869		for (Conversation conversation : getConversations()) {
1870			if (conversation.getAccount() == account) {
1871				for (Message message : conversation.getMessages()) {
1872					if (message.getType() != Message.TYPE_IMAGE
1873							&& message.getStatus() == Message.STATUS_UNSEND) {
1874						markMessage(message, Message.STATUS_WAITING);
1875							}
1876				}
1877			}
1878		}
1879	}
1880
1881	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1882			final int status) {
1883		if (uuid == null) {
1884			return false;
1885		} else {
1886			for (Conversation conversation : getConversations()) {
1887				if (conversation.getContactJid().equals(recipient)
1888						&& conversation.getAccount().equals(account)) {
1889					return markMessage(conversation, uuid, status);
1890						}
1891			}
1892			return false;
1893		}
1894	}
1895
1896	public boolean markMessage(Conversation conversation, String uuid,
1897			int status) {
1898		if (uuid == null) {
1899			return false;
1900		} else {
1901			for (Message message : conversation.getMessages()) {
1902				if (uuid.equals(message.getUuid())
1903						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1904							.equals(message.getRemoteMsgId()))) {
1905					markMessage(message, status);
1906					return true;
1907							}
1908			}
1909			return false;
1910		}
1911	}
1912
1913	public void markMessage(Message message, int status) {
1914		if (status == Message.STATUS_SEND_FAILED
1915				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1916					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1917			return;
1918					}
1919		message.setStatus(status);
1920		databaseBackend.updateMessage(message);
1921		updateConversationUi();
1922	}
1923
1924	public SharedPreferences getPreferences() {
1925		return PreferenceManager
1926			.getDefaultSharedPreferences(getApplicationContext());
1927	}
1928
1929	public boolean forceEncryption() {
1930		return getPreferences().getBoolean("force_encryption", false);
1931	}
1932
1933	public boolean confirmMessages() {
1934		return getPreferences().getBoolean("confirm_messages", true);
1935	}
1936
1937	public boolean saveEncryptedMessages() {
1938		return !getPreferences().getBoolean("dont_save_encrypted", false);
1939	}
1940
1941	public boolean indicateReceived() {
1942		return getPreferences().getBoolean("indicate_received", false);
1943	}
1944
1945	public void updateConversationUi() {
1946		if (mOnConversationUpdate != null) {
1947			mOnConversationUpdate.onConversationUpdate();
1948		}
1949	}
1950
1951	public void updateAccountUi() {
1952		if (mOnAccountUpdate != null) {
1953			mOnAccountUpdate.onAccountUpdate();
1954		}
1955	}
1956
1957	public void updateRosterUi() {
1958		if (mOnRosterUpdate != null) {
1959			mOnRosterUpdate.onRosterUpdate();
1960		}
1961	}
1962
1963	public void updateMucRosterUi() {
1964		if (mOnMucRosterUpdate != null) {
1965			mOnMucRosterUpdate.onMucRosterUpdate();
1966		}
1967	}
1968
1969	public Account findAccountByJid(final Jid accountJid) {
1970		for (Account account : this.accounts) {
1971			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1972				return account;
1973			}
1974		}
1975		return null;
1976	}
1977
1978	public Conversation findConversationByUuid(String uuid) {
1979		for (Conversation conversation : getConversations()) {
1980			if (conversation.getUuid().equals(uuid)) {
1981				return conversation;
1982			}
1983		}
1984		return null;
1985	}
1986
1987	public void markRead(Conversation conversation, boolean calledByUi) {
1988		mNotificationService.clear(conversation);
1989		final Message markable = conversation.getLatestMarkableMessage();
1990		conversation.markRead();
1991		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1992			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1993			Account account = conversation.getAccount();
1994			final Jid to = markable.getCounterpart();
1995			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1996			this.sendMessagePacket(conversation.getAccount(),packet);
1997		}
1998		if (!calledByUi) {
1999			updateConversationUi();
2000		}
2001	}
2002
2003	public void failWaitingOtrMessages(Conversation conversation) {
2004		for (Message message : conversation.getMessages()) {
2005			if (message.getEncryption() == Message.ENCRYPTION_OTR
2006					&& message.getStatus() == Message.STATUS_WAITING) {
2007				markMessage(message, Message.STATUS_SEND_FAILED);
2008					}
2009		}
2010	}
2011
2012	public SecureRandom getRNG() {
2013		return this.mRandom;
2014	}
2015
2016	public MemorizingTrustManager getMemorizingTrustManager() {
2017		return this.mMemorizingTrustManager;
2018	}
2019
2020	public PowerManager getPowerManager() {
2021		return this.pm;
2022	}
2023
2024	public LruCache<String, Bitmap> getBitmapCache() {
2025		return this.mBitmapCache;
2026	}
2027
2028	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
2029		if (account.getStatus() == Account.State.ONLINE) {
2030			MessagePacket error = this.mMessageGenerator
2031				.generateNotAcceptable(packet);
2032			sendMessagePacket(account, error);
2033		}
2034	}
2035
2036	public void syncRosterToDisk(final Account account) {
2037		new Thread(new Runnable() {
2038
2039			@Override
2040			public void run() {
2041				databaseBackend.writeRoster(account.getRoster());
2042			}
2043		}).start();
2044
2045	}
2046
2047	public List<String> getKnownHosts() {
2048		List<String> hosts = new ArrayList<>();
2049		for (Account account : getAccounts()) {
2050			if (!hosts.contains(account.getServer().toString())) {
2051				hosts.add(account.getServer().toString());
2052			}
2053			for (Contact contact : account.getRoster().getContacts()) {
2054				if (contact.showInRoster()) {
2055					final String server = contact.getServer().toString();
2056					if (server != null && !hosts.contains(server)) {
2057						hosts.add(server);
2058					}
2059				}
2060			}
2061		}
2062		return hosts;
2063	}
2064
2065	public List<String> getKnownConferenceHosts() {
2066		ArrayList<String> mucServers = new ArrayList<>();
2067		for (Account account : accounts) {
2068			if (account.getXmppConnection() != null) {
2069				String server = account.getXmppConnection().getMucServer();
2070				if (server != null && !mucServers.contains(server)) {
2071					mucServers.add(server);
2072				}
2073			}
2074		}
2075		return mucServers;
2076	}
2077
2078	public void sendMessagePacket(Account account, MessagePacket packet) {
2079		XmppConnection connection = account.getXmppConnection();
2080		if (connection != null) {
2081			connection.sendMessagePacket(packet);
2082		}
2083	}
2084
2085	public void sendPresencePacket(Account account, PresencePacket packet) {
2086		XmppConnection connection = account.getXmppConnection();
2087		if (connection != null) {
2088			connection.sendPresencePacket(packet);
2089		}
2090	}
2091
2092	public void sendIqPacket(Account account, IqPacket packet,
2093			OnIqPacketReceived callback) {
2094		XmppConnection connection = account.getXmppConnection();
2095		if (connection != null) {
2096			connection.sendIqPacket(packet, callback);
2097		}
2098	}
2099
2100	public MessageGenerator getMessageGenerator() {
2101		return this.mMessageGenerator;
2102	}
2103
2104	public PresenceGenerator getPresenceGenerator() {
2105		return this.mPresenceGenerator;
2106	}
2107
2108	public IqGenerator getIqGenerator() {
2109		return this.mIqGenerator;
2110	}
2111
2112	public JingleConnectionManager getJingleConnectionManager() {
2113		return this.mJingleConnectionManager;
2114	}
2115
2116	public List<Contact> findContacts(Jid jid) {
2117		ArrayList<Contact> contacts = new ArrayList<>();
2118		for (Account account : getAccounts()) {
2119			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2120				Contact contact = account.getRoster().getContactFromRoster(jid);
2121				if (contact != null) {
2122					contacts.add(contact);
2123				}
2124			}
2125		}
2126		return contacts;
2127	}
2128
2129	public NotificationService getNotificationService() {
2130		return this.mNotificationService;
2131	}
2132
2133	public HttpConnectionManager getHttpConnectionManager() {
2134		return this.mHttpConnectionManager;
2135	}
2136
2137	public void resendFailedMessages(Message message) {
2138		List<Message> messages = new ArrayList<>();
2139		Message current = message;
2140		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2141			messages.add(current);
2142			if (current.mergeable(current.next())) {
2143				current = current.next();
2144			} else {
2145				break;
2146			}
2147		}
2148		for (Message msg : messages) {
2149			markMessage(msg, Message.STATUS_WAITING);
2150			this.resendMessage(msg);
2151		}
2152	}
2153
2154	public interface OnConversationUpdate {
2155		public void onConversationUpdate();
2156	}
2157
2158	public interface OnAccountUpdate {
2159		public void onAccountUpdate();
2160	}
2161
2162	public interface OnRosterUpdate {
2163		public void onRosterUpdate();
2164	}
2165
2166	public interface OnMucRosterUpdate {
2167		public void onMucRosterUpdate();
2168	}
2169
2170	private interface OnConferenceOptionsPushed {
2171		public void onPushSucceeded();
2172		public void onPushFailed();
2173	}
2174
2175	public class XmppConnectionBinder extends Binder {
2176		public XmppConnectionService getService() {
2177			return XmppConnectionService.this;
2178		}
2179	}
2180}