XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.math.BigInteger;
  36import java.security.SecureRandom;
  37import java.util.ArrayList;
  38import java.util.Collections;
  39import java.util.Comparator;
  40import java.util.Hashtable;
  41import java.util.List;
  42import java.util.Locale;
  43import java.util.concurrent.CopyOnWriteArrayList;
  44
  45import de.duenndns.ssl.MemorizingTrustManager;
  46import eu.siacs.conversations.Config;
  47import eu.siacs.conversations.R;
  48import eu.siacs.conversations.crypto.PgpEngine;
  49import eu.siacs.conversations.entities.Account;
  50import eu.siacs.conversations.entities.Bookmark;
  51import eu.siacs.conversations.entities.Contact;
  52import eu.siacs.conversations.entities.Conversation;
  53import eu.siacs.conversations.entities.Downloadable;
  54import eu.siacs.conversations.entities.DownloadableFile;
  55import eu.siacs.conversations.entities.DownloadablePlaceholder;
  56import eu.siacs.conversations.entities.Message;
  57import eu.siacs.conversations.entities.MucOptions;
  58import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  59import eu.siacs.conversations.entities.Presences;
  60import eu.siacs.conversations.generator.IqGenerator;
  61import eu.siacs.conversations.generator.MessageGenerator;
  62import eu.siacs.conversations.generator.PresenceGenerator;
  63import eu.siacs.conversations.http.HttpConnectionManager;
  64import eu.siacs.conversations.parser.IqParser;
  65import eu.siacs.conversations.parser.MessageParser;
  66import eu.siacs.conversations.parser.PresenceParser;
  67import eu.siacs.conversations.persistance.DatabaseBackend;
  68import eu.siacs.conversations.persistance.FileBackend;
  69import eu.siacs.conversations.ui.UiCallback;
  70import eu.siacs.conversations.utils.CryptoHelper;
  71import eu.siacs.conversations.utils.ExceptionHelper;
  72import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  73import eu.siacs.conversations.utils.PRNGFixes;
  74import eu.siacs.conversations.utils.PhoneHelper;
  75import eu.siacs.conversations.xml.Element;
  76import eu.siacs.conversations.xmpp.OnBindListener;
  77import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  78import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  79import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  80import eu.siacs.conversations.xmpp.OnStatusChanged;
  81import eu.siacs.conversations.xmpp.XmppConnection;
  82import eu.siacs.conversations.xmpp.forms.Data;
  83import eu.siacs.conversations.xmpp.forms.Field;
  84import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  85import eu.siacs.conversations.xmpp.jid.Jid;
  86import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  87import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  88import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  89import eu.siacs.conversations.xmpp.pep.Avatar;
  90import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  91import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  92import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  93
  94public class XmppConnectionService extends Service implements OnPhoneContactsLoadedListener {
  95
  96	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
  97	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  98	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
  99	private ContentObserver contactObserver = new ContentObserver(null) {
 100		@Override
 101		public void onChange(boolean selfChange) {
 102			super.onChange(selfChange);
 103			Intent intent = new Intent(getApplicationContext(),
 104					XmppConnectionService.class);
 105			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 106			startService(intent);
 107		}
 108	};
 109	private final IBinder mBinder = new XmppConnectionBinder();
 110	public DatabaseBackend databaseBackend;
 111	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 112
 113		@Override
 114		public void onContactStatusChanged(Contact contact, boolean online) {
 115			Conversation conversation = find(getConversations(), contact);
 116			if (conversation != null) {
 117				if (online && contact.getPresences().size() > 1) {
 118					conversation.endOtrIfNeeded();
 119				} else {
 120					conversation.resetOtrSession();
 121				}
 122				if (online && (contact.getPresences().size() == 1)) {
 123					sendUnsentMessages(conversation);
 124				}
 125			}
 126		}
 127	};
 128	private FileBackend fileBackend = new FileBackend(this);
 129	private MemorizingTrustManager mMemorizingTrustManager;
 130	private NotificationService mNotificationService = new NotificationService(
 131			this);
 132	private MessageParser mMessageParser = new MessageParser(this);
 133	private PresenceParser mPresenceParser = new PresenceParser(this);
 134	private IqParser mIqParser = new IqParser(this);
 135	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 136	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 137	private List<Account> accounts;
 138	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 139	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 140			this);
 141	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 142			this);
 143	private AvatarService mAvatarService = new AvatarService(this);
 144	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 145	private OnConversationUpdate mOnConversationUpdate = null;
 146	private Integer convChangedListenerCount = 0;
 147	private OnAccountUpdate mOnAccountUpdate = null;
 148	private OnStatusChanged statusListener = new OnStatusChanged() {
 149
 150		@Override
 151		public void onStatusChanged(Account account) {
 152			XmppConnection connection = account.getXmppConnection();
 153			if (mOnAccountUpdate != null) {
 154				mOnAccountUpdate.onAccountUpdate();
 155			}
 156			if (account.getStatus() == Account.State.ONLINE) {
 157				for (Conversation conversation : account.pendingConferenceLeaves) {
 158					leaveMuc(conversation);
 159				}
 160				for (Conversation conversation : account.pendingConferenceJoins) {
 161					joinMuc(conversation);
 162				}
 163				mMessageArchiveService.executePendingQueries(account);
 164				mJingleConnectionManager.cancelInTransmission();
 165				List<Conversation> conversations = getConversations();
 166				for (Conversation conversation : conversations) {
 167					if (conversation.getAccount() == account) {
 168						conversation.startOtrIfNeeded();
 169						sendUnsentMessages(conversation);
 170					}
 171				}
 172				if (connection != null && connection.getFeatures().csi()) {
 173					if (checkListeners()) {
 174						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 175								+ " sending csi//inactive");
 176						connection.sendInactive();
 177					} else {
 178						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 179								+ " sending csi//active");
 180						connection.sendActive();
 181					}
 182				}
 183				syncDirtyContacts(account);
 184				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 185			} else if (account.getStatus() == Account.State.OFFLINE) {
 186				resetSendingToWaiting(account);
 187				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 188					int timeToReconnect = mRandom.nextInt(50) + 10;
 189					scheduleWakeupCall(timeToReconnect, false);
 190				}
 191			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 192				databaseBackend.updateAccount(account);
 193				reconnectAccount(account, true);
 194			} else if ((account.getStatus() != Account.State.CONNECTING)
 195					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 196				if (connection != null) {
 197					int next = connection.getTimeToNextAttempt();
 198					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 199							+ ": error connecting account. try again in "
 200							+ next + "s for the "
 201							+ (connection.getAttempt() + 1) + " time");
 202					scheduleWakeupCall((int) (next * 1.2), false);
 203				}
 204					}
 205			getNotificationService().updateErrorNotification();
 206		}
 207	};
 208
 209	private int accountChangedListenerCount = 0;
 210	private OnRosterUpdate mOnRosterUpdate = null;
 211	private int rosterChangedListenerCount = 0;
 212	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 213	private int mucRosterChangedListenerCount = 0;
 214	private SecureRandom mRandom;
 215	private FileObserver fileObserver = new FileObserver(
 216			FileBackend.getConversationsImageDirectory()) {
 217
 218		@Override
 219		public void onEvent(int event, String path) {
 220			if (event == FileObserver.DELETE) {
 221				markFileDeleted(path.split("\\.")[0]);
 222			}
 223		}
 224	};
 225	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 226
 227		@Override
 228		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 229			mJingleConnectionManager.deliverPacket(account, packet);
 230		}
 231	};
 232
 233	private OpenPgpServiceConnection pgpServiceConnection;
 234	private PgpEngine mPgpEngine = null;
 235	private Intent pingIntent;
 236	private PendingIntent pendingPingIntent = null;
 237	private WakeLock wakeLock;
 238	private PowerManager pm;
 239	private OnBindListener mOnBindListener = new OnBindListener() {
 240
 241		@Override
 242		public void onBind(final Account account) {
 243			account.getRoster().clearPresences();
 244			account.clearPresences(); // self presences
 245			account.pendingConferenceJoins.clear();
 246			account.pendingConferenceLeaves.clear();
 247			fetchRosterFromServer(account);
 248			fetchBookmarks(account);
 249			sendPresencePacket(account,
 250					mPresenceGenerator.sendPresence(account));
 251			connectMultiModeConversations(account);
 252			updateConversationUi();
 253		}
 254	};
 255
 256	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 257
 258		@Override
 259		public void onMessageAcknowledged(Account account, String uuid) {
 260			for (final Conversation conversation : getConversations()) {
 261				if (conversation.getAccount() == account) {
 262					Message message = conversation.findUnsentMessageWithUuid(uuid);
 263					if (message != null) {
 264						markMessage(message, Message.STATUS_SEND);
 265						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 266							databaseBackend.updateConversation(conversation);
 267						}
 268					}
 269				}
 270			}
 271		}
 272	};
 273	private LruCache<String, Bitmap> mBitmapCache;
 274	private IqGenerator mIqGenerator = new IqGenerator(this);
 275	private Thread mPhoneContactMergerThread;
 276
 277	public PgpEngine getPgpEngine() {
 278		if (pgpServiceConnection.isBound()) {
 279			if (this.mPgpEngine == null) {
 280				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 281							getApplicationContext(),
 282							pgpServiceConnection.getService()), this);
 283			}
 284			return mPgpEngine;
 285		} else {
 286			return null;
 287		}
 288
 289	}
 290
 291	public FileBackend getFileBackend() {
 292		return this.fileBackend;
 293	}
 294
 295	public AvatarService getAvatarService() {
 296		return this.mAvatarService;
 297	}
 298
 299	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 300		final Message message;
 301		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 302			message = new Message(conversation, "",
 303					Message.ENCRYPTION_DECRYPTED);
 304		} else {
 305			message = new Message(conversation, "",
 306					conversation.getNextEncryption(forceEncryption()));
 307		}
 308		message.setCounterpart(conversation.getNextCounterpart());
 309		message.setType(Message.TYPE_FILE);
 310		message.setStatus(Message.STATUS_OFFERED);
 311		String path = getFileBackend().getOriginalPath(uri);
 312		if (path!=null) {
 313			message.setRelativeFilePath(path);
 314			getFileBackend().updateFileParams(message);
 315			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 316				getPgpEngine().encrypt(message, callback);
 317			} else {
 318				callback.success(message);
 319			}
 320		} else {
 321			new Thread(new Runnable() {
 322				@Override
 323				public void run() {
 324					try {
 325						getFileBackend().copyFileToPrivateStorage(message, uri);
 326						getFileBackend().updateFileParams(message);
 327						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 328							getPgpEngine().encrypt(message, callback);
 329						} else {
 330							callback.success(message);
 331						}
 332					} catch (FileBackend.FileCopyException e) {
 333						callback.error(e.getResId(),message);
 334					}
 335				}
 336			}).start();
 337
 338		}
 339	}
 340
 341	public void attachImageToConversation(final Conversation conversation,
 342			final Uri uri, final UiCallback<Message> callback) {
 343		final Message message;
 344		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 345			message = new Message(conversation, "",
 346					Message.ENCRYPTION_DECRYPTED);
 347		} else {
 348			message = new Message(conversation, "",
 349					conversation.getNextEncryption(forceEncryption()));
 350		}
 351		message.setCounterpart(conversation.getNextCounterpart());
 352		message.setType(Message.TYPE_IMAGE);
 353		message.setStatus(Message.STATUS_OFFERED);
 354		new Thread(new Runnable() {
 355
 356			@Override
 357			public void run() {
 358				try {
 359					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 360					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 361						getPgpEngine().encrypt(message, callback);
 362					} else {
 363						callback.success(message);
 364					}
 365				} catch (FileBackend.FileCopyException e) {
 366					callback.error(e.getResId(), message);
 367				}
 368			}
 369		}).start();
 370	}
 371
 372	public Conversation find(Bookmark bookmark) {
 373		return find(bookmark.getAccount(), bookmark.getJid());
 374	}
 375
 376	public Conversation find(final Account account, final Jid jid) {
 377		return find(getConversations(), account, jid);
 378	}
 379
 380	@Override
 381	public int onStartCommand(Intent intent, int flags, int startId) {
 382		if (intent != null && intent.getAction() != null) {
 383			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 384				PhoneHelper.loadPhoneContacts(getApplicationContext(), new ArrayList<Bundle>(), this);
 385				return START_STICKY;
 386			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 387				logoutAndSave();
 388				return START_NOT_STICKY;
 389			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 390				mNotificationService.clear();
 391			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 392				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 393				toggleForegroundService();
 394			}
 395		}
 396		this.wakeLock.acquire();
 397
 398		for (Account account : accounts) {
 399			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 400				if (!hasInternetConnection()) {
 401					account.setStatus(Account.State.NO_INTERNET);
 402					if (statusListener != null) {
 403						statusListener.onStatusChanged(account);
 404					}
 405				} else {
 406					if (account.getStatus() == Account.State.NO_INTERNET) {
 407						account.setStatus(Account.State.OFFLINE);
 408						if (statusListener != null) {
 409							statusListener.onStatusChanged(account);
 410						}
 411					}
 412					if (account.getStatus() == Account.State.ONLINE) {
 413						long lastReceived = account.getXmppConnection()
 414							.getLastPacketReceived();
 415						long lastSent = account.getXmppConnection()
 416							.getLastPingSent();
 417						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 418							Log.d(Config.LOGTAG, account.getJid()
 419									+ ": ping timeout");
 420							this.reconnectAccount(account, true);
 421						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 422							account.getXmppConnection().sendPing();
 423							this.scheduleWakeupCall(2, false);
 424						}
 425					} else if (account.getStatus() == Account.State.OFFLINE) {
 426						if (account.getXmppConnection() == null) {
 427							account.setXmppConnection(this
 428									.createConnection(account));
 429						}
 430						new Thread(account.getXmppConnection()).start();
 431					} else if ((account.getStatus() == Account.State.CONNECTING)
 432							&& ((SystemClock.elapsedRealtime() - account
 433									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 434						Log.d(Config.LOGTAG, account.getJid()
 435								+ ": time out during connect reconnecting");
 436						reconnectAccount(account, true);
 437					} else {
 438						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 439							reconnectAccount(account, true);
 440						}
 441					}
 442					// in any case. reschedule wakup call
 443					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 444				}
 445				if (mOnAccountUpdate != null) {
 446					mOnAccountUpdate.onAccountUpdate();
 447				}
 448			}
 449		}
 450		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 451			if (!pm.isScreenOn()) {
 452			removeStaleListeners();
 453			}*/
 454		if (wakeLock.isHeld()) {
 455			try {
 456				wakeLock.release();
 457			} catch (final RuntimeException ignored) {
 458			}
 459		}
 460		return START_STICKY;
 461	}
 462
 463	public boolean hasInternetConnection() {
 464		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 465			.getSystemService(Context.CONNECTIVITY_SERVICE);
 466		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 467		return activeNetwork != null && activeNetwork.isConnected();
 468	}
 469
 470	@SuppressLint("TrulyRandom")
 471	@Override
 472	public void onCreate() {
 473		ExceptionHelper.init(getApplicationContext());
 474		PRNGFixes.apply();
 475		this.mRandom = new SecureRandom();
 476		this.mMemorizingTrustManager = new MemorizingTrustManager(
 477				getApplicationContext());
 478
 479		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 480		int cacheSize = maxMemory / 8;
 481		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 482			@Override
 483			protected int sizeOf(String key, Bitmap bitmap) {
 484				return bitmap.getByteCount() / 1024;
 485			}
 486		};
 487
 488		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 489		this.accounts = databaseBackend.getAccounts();
 490
 491		for (Account account : this.accounts) {
 492			account.initOtrEngine(this);
 493			this.databaseBackend.readRoster(account.getRoster());
 494		}
 495		initConversations();
 496		PhoneHelper.loadPhoneContacts(getApplicationContext(),new ArrayList<Bundle>(), this);
 497
 498		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 499		this.fileObserver.startWatching();
 500		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 501		this.pgpServiceConnection.bindToService();
 502
 503		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 504		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 505		toggleForegroundService();
 506	}
 507
 508	public void toggleForegroundService() {
 509		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 510			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 511		} else {
 512			stopForeground(true);
 513		}
 514	}
 515
 516	@Override
 517	public void onTaskRemoved(Intent rootIntent) {
 518		super.onTaskRemoved(rootIntent);
 519		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 520			this.logoutAndSave();
 521		}
 522	}
 523
 524	private void logoutAndSave() {
 525		for (Account account : accounts) {
 526			databaseBackend.writeRoster(account.getRoster());
 527			if (account.getXmppConnection() != null) {
 528				disconnect(account, false);
 529			}
 530		}
 531		Context context = getApplicationContext();
 532		AlarmManager alarmManager = (AlarmManager) context
 533			.getSystemService(Context.ALARM_SERVICE);
 534		Intent intent = new Intent(context, EventReceiver.class);
 535		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 536		Log.d(Config.LOGTAG, "good bye");
 537		stopSelf();
 538	}
 539
 540	protected void scheduleWakeupCall(int seconds, boolean ping) {
 541		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 542		Context context = getApplicationContext();
 543		AlarmManager alarmManager = (AlarmManager) context
 544			.getSystemService(Context.ALARM_SERVICE);
 545
 546		if (ping) {
 547			if (this.pingIntent == null) {
 548				this.pingIntent = new Intent(context, EventReceiver.class);
 549				this.pingIntent.setAction("ping");
 550				this.pingIntent.putExtra("time", timeToWake);
 551				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 552						this.pingIntent, 0);
 553				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 554						timeToWake, pendingPingIntent);
 555			} else {
 556				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 557				if (scheduledTime < SystemClock.elapsedRealtime()
 558						|| (scheduledTime > timeToWake)) {
 559					this.pingIntent.putExtra("time", timeToWake);
 560					alarmManager.cancel(this.pendingPingIntent);
 561					this.pendingPingIntent = PendingIntent.getBroadcast(
 562							context, 0, this.pingIntent, 0);
 563					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 564							timeToWake, pendingPingIntent);
 565						}
 566			}
 567		} else {
 568			Intent intent = new Intent(context, EventReceiver.class);
 569			intent.setAction("ping_check");
 570			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 571					intent, 0);
 572			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 573					alarmIntent);
 574		}
 575
 576	}
 577
 578	public XmppConnection createConnection(Account account) {
 579		SharedPreferences sharedPref = getPreferences();
 580		account.setResource(sharedPref.getString("resource", "mobile")
 581				.toLowerCase(Locale.getDefault()));
 582		XmppConnection connection = new XmppConnection(account, this);
 583		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 584		connection.setOnStatusChangedListener(this.statusListener);
 585		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 586		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 587		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 588		connection.setOnBindListener(this.mOnBindListener);
 589		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 590		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 591		return connection;
 592	}
 593
 594	public void sendMessage(Message message) {
 595		Account account = message.getConversation().getAccount();
 596		account.deactivateGracePeriod();
 597		Conversation conv = message.getConversation();
 598		MessagePacket packet = null;
 599		boolean saveInDb = true;
 600		boolean send = false;
 601		if (account.getStatus() == Account.State.ONLINE
 602				&& account.getXmppConnection() != null) {
 603			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 604				if (message.getCounterpart() != null) {
 605					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 606						if (!conv.hasValidOtrSession()) {
 607							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 608							message.setStatus(Message.STATUS_WAITING);
 609						} else if (conv.hasValidOtrSession()
 610								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 611							mJingleConnectionManager
 612								.createNewConnection(message);
 613								}
 614					} else {
 615						mJingleConnectionManager.createNewConnection(message);
 616					}
 617				} else {
 618					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 619						conv.startOtrIfNeeded();
 620					}
 621					message.setStatus(Message.STATUS_WAITING);
 622				}
 623			} else {
 624				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 625					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 626						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 627						message.setStatus(Message.STATUS_WAITING);
 628					} else if (conv.hasValidOtrSession()) {
 629						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 630							packet = mMessageGenerator.generateOtrChat(message);
 631							send = true;
 632						} else {
 633							message.setStatus(Message.STATUS_WAITING);
 634							conv.startOtrIfNeeded();
 635						}
 636					} else {
 637						message.setStatus(Message.STATUS_WAITING);
 638					}
 639				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 640					message.getConversation().endOtrIfNeeded();
 641					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 642						@Override
 643						public void onMessageFound(Message message) {
 644							markMessage(message,Message.STATUS_SEND_FAILED);
 645						}
 646					});
 647					packet = mMessageGenerator.generatePgpChat(message);
 648					send = true;
 649				} else {
 650					message.getConversation().endOtrIfNeeded();
 651					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 652						@Override
 653						public void onMessageFound(Message message) {
 654							markMessage(message,Message.STATUS_SEND_FAILED);
 655						}
 656					});
 657					packet = mMessageGenerator.generateChat(message);
 658					send = true;
 659				}
 660			}
 661			if (!account.getXmppConnection().getFeatures().sm()
 662					&& conv.getMode() != Conversation.MODE_MULTI) {
 663				message.setStatus(Message.STATUS_SEND);
 664					}
 665		} else {
 666			message.setStatus(Message.STATUS_WAITING);
 667			if (message.getType() == Message.TYPE_TEXT) {
 668				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 669					String pgpBody = message.getEncryptedBody();
 670					String decryptedBody = message.getBody();
 671					message.setBody(pgpBody);
 672					message.setEncryption(Message.ENCRYPTION_PGP);
 673					databaseBackend.createMessage(message);
 674					saveInDb = false;
 675					message.setBody(decryptedBody);
 676					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 677				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 678					if (!conv.hasValidOtrSession()
 679							&& message.getCounterpart() != null) {
 680						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 681							}
 682				}
 683			}
 684
 685		}
 686		conv.add(message);
 687		if (saveInDb) {
 688			if (message.getEncryption() == Message.ENCRYPTION_NONE
 689					|| saveEncryptedMessages()) {
 690				databaseBackend.createMessage(message);
 691					}
 692		}
 693		if ((send) && (packet != null)) {
 694			sendMessagePacket(account, packet);
 695		}
 696		updateConversationUi();
 697	}
 698
 699	private void sendUnsentMessages(Conversation conversation) {
 700		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 701
 702			@Override
 703			public void onMessageFound(Message message) {
 704				resendMessage(message);
 705			}
 706		});
 707	}
 708
 709	private void resendMessage(Message message) {
 710		Account account = message.getConversation().getAccount();
 711		MessagePacket packet = null;
 712		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 713			Presences presences = message.getConversation().getContact()
 714				.getPresences();
 715			if (!message.getConversation().hasValidOtrSession()) {
 716				if ((message.getCounterpart() != null)
 717						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 718					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 719				} else {
 720					if (presences.size() == 1) {
 721						String presence = presences.asStringArray()[0];
 722						message.getConversation().startOtrSession(presence, true);
 723					}
 724				}
 725			} else {
 726				if (message.getConversation().getOtrSession()
 727						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 728					try {
 729						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 730						if (message.getType() == Message.TYPE_TEXT) {
 731							packet = mMessageGenerator.generateOtrChat(message,
 732									true);
 733						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 734							mJingleConnectionManager.createNewConnection(message);
 735						}
 736					} catch (InvalidJidException e) {
 737
 738					}
 739						}
 740			}
 741		} else if (message.getType() == Message.TYPE_TEXT) {
 742			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 743				packet = mMessageGenerator.generateChat(message, true);
 744			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 745					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 746				packet = mMessageGenerator.generatePgpChat(message, true);
 747					}
 748		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 749			Contact contact = message.getConversation().getContact();
 750			Presences presences = contact.getPresences();
 751			if ((message.getCounterpart() != null)
 752					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 753				markMessage(message, Message.STATUS_OFFERED);
 754				mJingleConnectionManager.createNewConnection(message);
 755			} else {
 756				if (presences.size() == 1) {
 757					String presence = presences.asStringArray()[0];
 758					try {
 759						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 760					} catch (InvalidJidException e) {
 761						return;
 762					}
 763					markMessage(message, Message.STATUS_OFFERED);
 764					mJingleConnectionManager.createNewConnection(message);
 765				}
 766			}
 767		}
 768		if (packet != null) {
 769			if (!account.getXmppConnection().getFeatures().sm()
 770					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 771				markMessage(message, Message.STATUS_SEND);
 772			} else {
 773				markMessage(message, Message.STATUS_UNSEND);
 774			}
 775			sendMessagePacket(account, packet);
 776		}
 777	}
 778
 779	public void fetchRosterFromServer(Account account) {
 780		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 781		if (!"".equals(account.getRosterVersion())) {
 782			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 783					+ ": fetching roster version " + account.getRosterVersion());
 784		} else {
 785			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 786		}
 787		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 788				account.getRosterVersion());
 789		account.getXmppConnection().sendIqPacket(iqPacket,
 790				new OnIqPacketReceived() {
 791
 792					@Override
 793					public void onIqPacketReceived(final Account account,
 794												   IqPacket packet) {
 795						Element query = packet.findChild("query");
 796						if (query != null) {
 797							account.getRoster().markAllAsNotInRoster();
 798							mIqParser.rosterItems(account, query);
 799						}
 800					}
 801				});
 802	}
 803
 804	public void fetchBookmarks(Account account) {
 805		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 806		Element query = iqPacket.query("jabber:iq:private");
 807		query.addChild("storage", "storage:bookmarks");
 808		OnIqPacketReceived callback = new OnIqPacketReceived() {
 809
 810			@Override
 811			public void onIqPacketReceived(Account account, IqPacket packet) {
 812				Element query = packet.query();
 813				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 814				Element storage = query.findChild("storage",
 815						"storage:bookmarks");
 816				if (storage != null) {
 817					for (Element item : storage.getChildren()) {
 818						if (item.getName().equals("conference")) {
 819							Bookmark bookmark = Bookmark.parse(item, account);
 820							bookmarks.add(bookmark);
 821							Conversation conversation = find(bookmark);
 822							if (conversation != null) {
 823								conversation.setBookmark(bookmark);
 824							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 825								conversation = findOrCreateConversation(
 826										account, bookmark.getJid(), true);
 827								conversation.setBookmark(bookmark);
 828								joinMuc(conversation);
 829							}
 830						}
 831					}
 832				}
 833				account.setBookmarks(bookmarks);
 834			}
 835		};
 836		sendIqPacket(account, iqPacket, callback);
 837
 838	}
 839
 840	public void pushBookmarks(Account account) {
 841		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 842		Element query = iqPacket.query("jabber:iq:private");
 843		Element storage = query.addChild("storage", "storage:bookmarks");
 844		for (Bookmark bookmark : account.getBookmarks()) {
 845			storage.addChild(bookmark);
 846		}
 847		sendIqPacket(account, iqPacket, null);
 848	}
 849
 850	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 851		if (mPhoneContactMergerThread != null) {
 852			mPhoneContactMergerThread.interrupt();
 853		}
 854		mPhoneContactMergerThread = new Thread(new Runnable() {
 855			@Override
 856			public void run() {
 857				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 858				for (Account account : accounts) {
 859					account.getRoster().clearSystemAccounts();
 860					for (Bundle phoneContact : phoneContacts) {
 861						if (Thread.interrupted()) {
 862							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 863							return;
 864						}
 865						Jid jid;
 866						try {
 867							jid = Jid.fromString(phoneContact.getString("jid"));
 868						} catch (final InvalidJidException e) {
 869							break;
 870						}
 871						final Contact contact = account.getRoster()
 872								.getContact(jid);
 873						String systemAccount = phoneContact.getInt("phoneid")
 874								+ "#"
 875								+ phoneContact.getString("lookup");
 876						contact.setSystemAccount(systemAccount);
 877						contact.setPhotoUri(phoneContact.getString("photouri"));
 878						getAvatarService().clear(contact);
 879						contact.setSystemName(phoneContact.getString("displayname"));
 880					}
 881				}
 882				Log.d(Config.LOGTAG,"finished merging phone contacts");
 883				updateAccountUi();
 884			}
 885		});
 886		mPhoneContactMergerThread.start();
 887	}
 888
 889	private void initConversations() {
 890		synchronized (this.conversations) {
 891			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 892			for (Account account : this.accounts) {
 893				accountLookupTable.put(account.getUuid(), account);
 894			}
 895			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 896			for (Conversation conv : this.conversations) {
 897				Account account = accountLookupTable.get(conv.getAccountUuid());
 898				conv.setAccount(account);
 899				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 900				checkDeletedFiles(conv);
 901			}
 902		}
 903	}
 904
 905	public List<Conversation> getConversations() {
 906		return this.conversations;
 907	}
 908
 909	private void checkDeletedFiles(Conversation conversation) {
 910		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 911
 912			@Override
 913			public void onMessageFound(Message message) {
 914				if (!getFileBackend().isFileAvailable(message)) {
 915					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 916				}
 917			}
 918		});
 919	}
 920
 921	private void markFileDeleted(String uuid) {
 922		for (Conversation conversation : getConversations()) {
 923			Message message = conversation.findMessageWithFileAndUuid(uuid);
 924			if (message != null) {
 925				if (!getFileBackend().isFileAvailable(message)) {
 926					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 927					updateConversationUi();
 928				}
 929				return;
 930			}
 931		}
 932	}
 933
 934	public void populateWithOrderedConversations(final List<Conversation> list) {
 935		populateWithOrderedConversations(list, true);
 936	}
 937
 938	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 939		list.clear();
 940		if (includeConferences) {
 941			list.addAll(getConversations());
 942		} else {
 943			for (Conversation conversation : getConversations()) {
 944				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 945					list.add(conversation);
 946				}
 947			}
 948		}
 949		Collections.sort(list, new Comparator<Conversation>() {
 950			@Override
 951			public int compare(Conversation lhs, Conversation rhs) {
 952				Message left = lhs.getLatestMessage();
 953				Message right = rhs.getLatestMessage();
 954				if (left.getTimeSent() > right.getTimeSent()) {
 955					return -1;
 956				} else if (left.getTimeSent() < right.getTimeSent()) {
 957					return 1;
 958				} else {
 959					return 0;
 960				}
 961			}
 962		});
 963	}
 964
 965	public int loadMoreMessages(Conversation conversation, long timestamp) {
 966		if (this.getMessageArchiveService().queryInProgress(conversation)) {
 967			return 0;
 968		}
 969		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 970				timestamp);
 971		for (Message message : messages) {
 972			message.setConversation(conversation);
 973		}
 974		conversation.addAll(0, messages);
 975		return messages.size();
 976	}
 977
 978	public List<Account> getAccounts() {
 979		return this.accounts;
 980	}
 981
 982	public Conversation find(List<Conversation> haystack, Contact contact) {
 983		for (Conversation conversation : haystack) {
 984			if (conversation.getContact() == contact) {
 985				return conversation;
 986			}
 987		}
 988		return null;
 989	}
 990
 991	public Conversation find(final List<Conversation> haystack,
 992			final Account account,
 993			final Jid jid) {
 994		if (jid == null ) {
 995			return null;
 996		}
 997		for (Conversation conversation : haystack) {
 998			if ((account == null || conversation.getAccount() == account)
 999					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
1000				return conversation;
1001					}
1002		}
1003		return null;
1004	}
1005
1006	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
1007		return this.findOrCreateConversation(account,jid,muc,null);
1008	}
1009
1010	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1011		synchronized (this.conversations) {
1012			Conversation conversation = find(account, jid);
1013			if (conversation != null) {
1014				return conversation;
1015			}
1016			conversation = databaseBackend.findConversation(account, jid);
1017			if (conversation != null) {
1018				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1019				conversation.setAccount(account);
1020				if (muc) {
1021					conversation.setMode(Conversation.MODE_MULTI);
1022				} else {
1023					conversation.setMode(Conversation.MODE_SINGLE);
1024				}
1025				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1026				this.databaseBackend.updateConversation(conversation);
1027			} else {
1028				String conversationName;
1029				Contact contact = account.getRoster().getContact(jid);
1030				if (contact != null) {
1031					conversationName = contact.getDisplayName();
1032				} else {
1033					conversationName = jid.getLocalpart();
1034				}
1035				if (muc) {
1036					conversation = new Conversation(conversationName, account, jid,
1037							Conversation.MODE_MULTI);
1038				} else {
1039					conversation = new Conversation(conversationName, account, jid,
1040							Conversation.MODE_SINGLE);
1041				}
1042				this.databaseBackend.createConversation(conversation);
1043			}
1044			if (query == null) {
1045				this.mMessageArchiveService.query(conversation);
1046			} else {
1047				if (query.getConversation() == null) {
1048					this.mMessageArchiveService.query(conversation,query.getStart());
1049				}
1050			}
1051			this.conversations.add(conversation);
1052			updateConversationUi();
1053			return conversation;
1054		}
1055	}
1056
1057	public void archiveConversation(Conversation conversation) {
1058		synchronized (this.conversations) {
1059			if (conversation.getMode() == Conversation.MODE_MULTI) {
1060				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1061					Bookmark bookmark = conversation.getBookmark();
1062					if (bookmark != null && bookmark.autojoin()) {
1063						bookmark.setAutojoin(false);
1064						pushBookmarks(bookmark.getAccount());
1065					}
1066				}
1067				leaveMuc(conversation);
1068			} else {
1069				conversation.endOtrIfNeeded();
1070			}
1071			this.databaseBackend.updateConversation(conversation);
1072			this.conversations.remove(conversation);
1073			updateConversationUi();
1074		}
1075	}
1076
1077	public void createAccount(Account account) {
1078		account.initOtrEngine(this);
1079		databaseBackend.createAccount(account);
1080		this.accounts.add(account);
1081		this.reconnectAccount(account, false);
1082		updateAccountUi();
1083	}
1084
1085	public void updateAccount(Account account) {
1086		this.statusListener.onStatusChanged(account);
1087		databaseBackend.updateAccount(account);
1088		reconnectAccount(account, false);
1089		updateAccountUi();
1090		getNotificationService().updateErrorNotification();
1091	}
1092
1093	public void deleteAccount(Account account) {
1094		synchronized (this.conversations) {
1095			for (Conversation conversation : conversations) {
1096				if (conversation.getAccount() == account) {
1097					if (conversation.getMode() == Conversation.MODE_MULTI) {
1098						leaveMuc(conversation);
1099					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1100						conversation.endOtrIfNeeded();
1101					}
1102					conversations.remove(conversation);
1103				}
1104			}
1105			if (account.getXmppConnection() != null) {
1106				this.disconnect(account, true);
1107			}
1108			databaseBackend.deleteAccount(account);
1109			this.accounts.remove(account);
1110			updateAccountUi();
1111			getNotificationService().updateErrorNotification();
1112		}
1113	}
1114
1115	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1116		synchronized (this) {
1117			if (checkListeners()) {
1118				switchToForeground();
1119			}
1120			this.mOnConversationUpdate = listener;
1121			this.mNotificationService.setIsInForeground(true);
1122			if (this.convChangedListenerCount < 2) {
1123				this.convChangedListenerCount++;
1124			}
1125		}
1126	}
1127
1128	public void removeOnConversationListChangedListener() {
1129		synchronized (this) {
1130			this.convChangedListenerCount--;
1131			if (this.convChangedListenerCount <= 0) {
1132				this.convChangedListenerCount = 0;
1133				this.mOnConversationUpdate = null;
1134				this.mNotificationService.setIsInForeground(false);
1135				if (checkListeners()) {
1136					switchToBackground();
1137				}
1138			}
1139		}
1140	}
1141
1142	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1143		synchronized (this) {
1144			if (checkListeners()) {
1145				switchToForeground();
1146			}
1147			this.mOnAccountUpdate = listener;
1148			if (this.accountChangedListenerCount < 2) {
1149				this.accountChangedListenerCount++;
1150			}
1151		}
1152	}
1153
1154	public void removeOnAccountListChangedListener() {
1155		synchronized (this) {
1156			this.accountChangedListenerCount--;
1157			if (this.accountChangedListenerCount <= 0) {
1158				this.mOnAccountUpdate = null;
1159				this.accountChangedListenerCount = 0;
1160				if (checkListeners()) {
1161					switchToBackground();
1162				}
1163			}
1164		}
1165	}
1166
1167	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1168		synchronized (this) {
1169			if (checkListeners()) {
1170				switchToForeground();
1171			}
1172			this.mOnRosterUpdate = listener;
1173			if (this.rosterChangedListenerCount < 2) {
1174				this.rosterChangedListenerCount++;
1175			}
1176		}
1177	}
1178
1179	public void removeOnRosterUpdateListener() {
1180		synchronized (this) {
1181			this.rosterChangedListenerCount--;
1182			if (this.rosterChangedListenerCount <= 0) {
1183				this.rosterChangedListenerCount = 0;
1184				this.mOnRosterUpdate = null;
1185				if (checkListeners()) {
1186					switchToBackground();
1187				}
1188			}
1189		}
1190	}
1191
1192	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1193		synchronized (this) {
1194			if (checkListeners()) {
1195				switchToForeground();
1196			}
1197			this.mOnMucRosterUpdate = listener;
1198			if (this.mucRosterChangedListenerCount < 2) {
1199				this.mucRosterChangedListenerCount++;
1200			}
1201		}
1202	}
1203
1204	public void removeOnMucRosterUpdateListener() {
1205		synchronized (this) {
1206			this.mucRosterChangedListenerCount--;
1207			if (this.mucRosterChangedListenerCount <= 0) {
1208				this.mucRosterChangedListenerCount = 0;
1209				this.mOnMucRosterUpdate = null;
1210				if (checkListeners()) {
1211					switchToBackground();
1212				}
1213			}
1214		}
1215	}
1216
1217	private boolean checkListeners() {
1218		return (this.mOnAccountUpdate == null
1219				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1220	}
1221
1222	private void switchToForeground() {
1223		for (Account account : getAccounts()) {
1224			if (account.getStatus() == Account.State.ONLINE) {
1225				XmppConnection connection = account.getXmppConnection();
1226				if (connection != null && connection.getFeatures().csi()) {
1227					connection.sendActive();
1228				}
1229			}
1230		}
1231		Log.d(Config.LOGTAG, "app switched into foreground");
1232	}
1233
1234	private void switchToBackground() {
1235		for (Account account : getAccounts()) {
1236			if (account.getStatus() == Account.State.ONLINE) {
1237				XmppConnection connection = account.getXmppConnection();
1238				if (connection != null && connection.getFeatures().csi()) {
1239					connection.sendInactive();
1240				}
1241			}
1242		}
1243		this.mNotificationService.setIsInForeground(false);
1244		Log.d(Config.LOGTAG, "app switched into background");
1245	}
1246
1247	public void connectMultiModeConversations(Account account) {
1248		List<Conversation> conversations = getConversations();
1249		for (Conversation conversation : conversations) {
1250			if ((conversation.getMode() == Conversation.MODE_MULTI)
1251					&& (conversation.getAccount() == account)) {
1252				joinMuc(conversation);
1253					}
1254		}
1255	}
1256
1257	public void joinMuc(Conversation conversation) {
1258		Account account = conversation.getAccount();
1259		account.pendingConferenceJoins.remove(conversation);
1260		account.pendingConferenceLeaves.remove(conversation);
1261		if (account.getStatus() == Account.State.ONLINE) {
1262			final String nick = conversation.getMucOptions().getProposedNick();
1263			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1264			if (joinJid == null) {
1265				return; //safety net
1266			}
1267			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1268			PresencePacket packet = new PresencePacket();
1269			packet.setFrom(conversation.getAccount().getJid());
1270			packet.setTo(joinJid);
1271			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1272			if (conversation.getMucOptions().getPassword() != null) {
1273				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1274			}
1275			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1276			String sig = account.getPgpSignature();
1277			if (sig != null) {
1278				packet.addChild("status").setContent("online");
1279				packet.addChild("x", "jabber:x:signed").setContent(sig);
1280			}
1281			sendPresencePacket(account, packet);
1282			if (!joinJid.equals(conversation.getContactJid())) {
1283				conversation.setContactJid(joinJid);
1284				databaseBackend.updateConversation(conversation);
1285			}
1286		} else {
1287			account.pendingConferenceJoins.add(conversation);
1288		}
1289	}
1290
1291	public void providePasswordForMuc(Conversation conversation, String password) {
1292		if (conversation.getMode() == Conversation.MODE_MULTI) {
1293			conversation.getMucOptions().setPassword(password);
1294			if (conversation.getBookmark() != null) {
1295				conversation.getBookmark().setAutojoin(true);
1296				pushBookmarks(conversation.getAccount());
1297			}
1298			databaseBackend.updateConversation(conversation);
1299			joinMuc(conversation);
1300		}
1301	}
1302
1303	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1304		final MucOptions options = conversation.getMucOptions();
1305		final Jid joinJid = options.createJoinJid(nick);
1306		if (options.online()) {
1307			Account account = conversation.getAccount();
1308			options.setOnRenameListener(new OnRenameListener() {
1309
1310				@Override
1311				public void onSuccess() {
1312					conversation.setContactJid(joinJid);
1313					databaseBackend.updateConversation(conversation);
1314					Bookmark bookmark = conversation.getBookmark();
1315					if (bookmark != null) {
1316						bookmark.setNick(nick);
1317						pushBookmarks(bookmark.getAccount());
1318					}
1319					callback.success(conversation);
1320				}
1321
1322				@Override
1323				public void onFailure() {
1324					callback.error(R.string.nick_in_use, conversation);
1325				}
1326			});
1327
1328			PresencePacket packet = new PresencePacket();
1329			packet.setTo(joinJid);
1330			packet.setFrom(conversation.getAccount().getJid());
1331
1332			String sig = account.getPgpSignature();
1333			if (sig != null) {
1334				packet.addChild("status").setContent("online");
1335				packet.addChild("x", "jabber:x:signed").setContent(sig);
1336			}
1337			sendPresencePacket(account, packet);
1338		} else {
1339			conversation.setContactJid(joinJid);
1340			databaseBackend.updateConversation(conversation);
1341			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1342				Bookmark bookmark = conversation.getBookmark();
1343				if (bookmark != null) {
1344					bookmark.setNick(nick);
1345					pushBookmarks(bookmark.getAccount());
1346				}
1347				joinMuc(conversation);
1348			}
1349		}
1350	}
1351
1352	public void leaveMuc(Conversation conversation) {
1353		Account account = conversation.getAccount();
1354		account.pendingConferenceJoins.remove(conversation);
1355		account.pendingConferenceLeaves.remove(conversation);
1356		if (account.getStatus() == Account.State.ONLINE) {
1357			PresencePacket packet = new PresencePacket();
1358			packet.setTo(conversation.getContactJid());
1359			packet.setFrom(conversation.getAccount().getJid());
1360			packet.setAttribute("type", "unavailable");
1361			sendPresencePacket(conversation.getAccount(), packet);
1362			conversation.getMucOptions().setOffline();
1363			conversation.deregisterWithBookmark();
1364			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1365					+ ": leaving muc " + conversation.getContactJid());
1366		} else {
1367			account.pendingConferenceLeaves.add(conversation);
1368		}
1369	}
1370
1371	private String findConferenceServer(final Account account) {
1372		String server;
1373		if (account.getXmppConnection() != null) {
1374			server = account.getXmppConnection().getMucServer();
1375			if (server != null) {
1376				return server;
1377			}
1378		}
1379		for(Account other : getAccounts()) {
1380			if (other != account && other.getXmppConnection() != null) {
1381				server = other.getXmppConnection().getMucServer();
1382				if (server != null) {
1383					return server;
1384				}
1385			}
1386		}
1387		return null;
1388	}
1389
1390	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1391		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1392		if (account.getStatus() == Account.State.ONLINE) {
1393			try {
1394				String server = findConferenceServer(account);
1395				if (server == null) {
1396					if (callback != null) {
1397						callback.error(R.string.no_conference_server_found,null);
1398					}
1399					return;
1400				}
1401				String name = new BigInteger(75,getRNG()).toString(32);
1402				Jid jid = Jid.fromParts(name,server,null);
1403				final Conversation conversation = findOrCreateConversation(account, jid, true);
1404				joinMuc(conversation);
1405				Bundle options = new Bundle();
1406				options.putString("muc#roomconfig_persistentroom", "1");
1407				options.putString("muc#roomconfig_membersonly", "1");
1408				options.putString("muc#roomconfig_publicroom", "0");
1409				options.putString("muc#roomconfig_whois", "anyone");
1410				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1411					@Override
1412					public void onPushSucceeded() {
1413						for(Jid invite : jids) {
1414							invite(conversation,invite);
1415						}
1416						if (callback != null) {
1417							callback.success(conversation);
1418						}
1419					}
1420
1421					@Override
1422					public void onPushFailed() {
1423						if (callback != null) {
1424							callback.error(R.string.conference_creation_failed, conversation);
1425						}
1426					}
1427				});
1428
1429			} catch (InvalidJidException e) {
1430				if (callback != null) {
1431					callback.error(R.string.conference_creation_failed, null);
1432				}
1433			}
1434		} else {
1435			if (callback != null) {
1436				callback.error(R.string.not_connected_try_again,null);
1437			}
1438		}
1439	}
1440
1441	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1442		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1443		request.setTo(conversation.getContactJid().toBareJid());
1444		request.query("http://jabber.org/protocol/muc#owner");
1445		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1446			@Override
1447			public void onIqPacketReceived(Account account, IqPacket packet) {
1448				if (packet.getType() != IqPacket.TYPE_ERROR) {
1449					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1450					for (Field field : data.getFields()) {
1451						if (options.containsKey(field.getName())) {
1452							field.setValue(options.getString(field.getName()));
1453						}
1454					}
1455					data.submit();
1456					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1457					set.setTo(conversation.getContactJid().toBareJid());
1458					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1459					sendIqPacket(account, set, new OnIqPacketReceived() {
1460						@Override
1461						public void onIqPacketReceived(Account account, IqPacket packet) {
1462							if (packet.getType() == IqPacket.TYPE_RESULT) {
1463								if (callback != null) {
1464									callback.onPushSucceeded();
1465								}
1466							} else {
1467								if (callback != null) {
1468									callback.onPushFailed();
1469								}
1470							}
1471						}
1472					});
1473				} else {
1474					if (callback != null) {
1475						callback.onPushFailed();
1476					}
1477				}
1478			}
1479		});
1480	}
1481
1482	public void disconnect(Account account, boolean force) {
1483		if ((account.getStatus() == Account.State.ONLINE)
1484				|| (account.getStatus() == Account.State.DISABLED)) {
1485			if (!force) {
1486				List<Conversation> conversations = getConversations();
1487				for (Conversation conversation : conversations) {
1488					if (conversation.getAccount() == account) {
1489						if (conversation.getMode() == Conversation.MODE_MULTI) {
1490							leaveMuc(conversation);
1491						} else {
1492							if (conversation.endOtrIfNeeded()) {
1493								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1494										+ ": ended otr session with "
1495										+ conversation.getContactJid());
1496							}
1497						}
1498					}
1499				}
1500			}
1501			account.getXmppConnection().disconnect(force);
1502				}
1503	}
1504
1505	@Override
1506	public IBinder onBind(Intent intent) {
1507		return mBinder;
1508	}
1509
1510	public void updateMessage(Message message) {
1511		databaseBackend.updateMessage(message);
1512		updateConversationUi();
1513	}
1514
1515	protected void syncDirtyContacts(Account account) {
1516		for (Contact contact : account.getRoster().getContacts()) {
1517			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1518				pushContactToServer(contact);
1519			}
1520			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1521				deleteContactOnServer(contact);
1522			}
1523		}
1524	}
1525
1526	public void createContact(Contact contact) {
1527		SharedPreferences sharedPref = getPreferences();
1528		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1529		if (autoGrant) {
1530			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1531			contact.setOption(Contact.Options.ASKING);
1532		}
1533		pushContactToServer(contact);
1534	}
1535
1536	public void onOtrSessionEstablished(Conversation conversation) {
1537		final Account account = conversation.getAccount();
1538		final Session otrSession = conversation.getOtrSession();
1539		Log.d(Config.LOGTAG,
1540				account.getJid().toBareJid() + " otr session established with "
1541						+ conversation.getContactJid() + "/"
1542						+ otrSession.getSessionID().getUserID());
1543		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1544
1545			@Override
1546			public void onMessageFound(Message message) {
1547				SessionID id = otrSession.getSessionID();
1548				try {
1549					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1550				} catch (InvalidJidException e) {
1551					return;
1552				}
1553				if (message.getType() == Message.TYPE_TEXT) {
1554					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1555					if (outPacket != null) {
1556						message.setStatus(Message.STATUS_SEND);
1557						databaseBackend.updateMessage(message);
1558						sendMessagePacket(account, outPacket);
1559					}
1560				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1561					mJingleConnectionManager.createNewConnection(message);
1562				}
1563				updateConversationUi();
1564			}
1565		});
1566	}
1567
1568	public boolean renewSymmetricKey(Conversation conversation) {
1569		Account account = conversation.getAccount();
1570		byte[] symmetricKey = new byte[32];
1571		this.mRandom.nextBytes(symmetricKey);
1572		Session otrSession = conversation.getOtrSession();
1573		if (otrSession != null) {
1574			MessagePacket packet = new MessagePacket();
1575			packet.setType(MessagePacket.TYPE_CHAT);
1576			packet.setFrom(account.getJid());
1577			packet.addChild("private", "urn:xmpp:carbons:2");
1578			packet.addChild("no-copy", "urn:xmpp:hints");
1579			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1580					+ otrSession.getSessionID().getUserID());
1581			try {
1582				packet.setBody(otrSession
1583						.transformSending(CryptoHelper.FILETRANSFER
1584							+ CryptoHelper.bytesToHex(symmetricKey)));
1585				sendMessagePacket(account, packet);
1586				conversation.setSymmetricKey(symmetricKey);
1587				return true;
1588			} catch (OtrException e) {
1589				return false;
1590			}
1591		}
1592		return false;
1593	}
1594
1595	public void pushContactToServer(Contact contact) {
1596		contact.resetOption(Contact.Options.DIRTY_DELETE);
1597		contact.setOption(Contact.Options.DIRTY_PUSH);
1598		Account account = contact.getAccount();
1599		if (account.getStatus() == Account.State.ONLINE) {
1600			boolean ask = contact.getOption(Contact.Options.ASKING);
1601			boolean sendUpdates = contact
1602				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1603				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1604			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1605			iq.query("jabber:iq:roster").addChild(contact.asElement());
1606			account.getXmppConnection().sendIqPacket(iq, null);
1607			if (sendUpdates) {
1608				sendPresencePacket(account,
1609						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1610			}
1611			if (ask) {
1612				sendPresencePacket(account,
1613						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1614			}
1615		}
1616	}
1617
1618	public void publishAvatar(Account account, Uri image,
1619			final UiCallback<Avatar> callback) {
1620		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1621		final int size = Config.AVATAR_SIZE;
1622		final Avatar avatar = getFileBackend()
1623			.getPepAvatar(image, size, format);
1624		if (avatar != null) {
1625			avatar.height = size;
1626			avatar.width = size;
1627			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1628				avatar.type = "image/webp";
1629			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1630				avatar.type = "image/jpeg";
1631			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1632				avatar.type = "image/png";
1633			}
1634			if (!getFileBackend().save(avatar)) {
1635				callback.error(R.string.error_saving_avatar, avatar);
1636				return;
1637			}
1638			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1639			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1640
1641				@Override
1642				public void onIqPacketReceived(Account account, IqPacket result) {
1643					if (result.getType() == IqPacket.TYPE_RESULT) {
1644						IqPacket packet = XmppConnectionService.this.mIqGenerator
1645							.publishAvatarMetadata(avatar);
1646						sendIqPacket(account, packet, new OnIqPacketReceived() {
1647
1648							@Override
1649							public void onIqPacketReceived(Account account,
1650									IqPacket result) {
1651								if (result.getType() == IqPacket.TYPE_RESULT) {
1652									if (account.setAvatar(avatar.getFilename())) {
1653										databaseBackend.updateAccount(account);
1654									}
1655									callback.success(avatar);
1656								} else {
1657									callback.error(
1658											R.string.error_publish_avatar_server_reject,
1659											avatar);
1660								}
1661							}
1662						});
1663					} else {
1664						callback.error(
1665								R.string.error_publish_avatar_server_reject,
1666								avatar);
1667					}
1668				}
1669			});
1670		} else {
1671			callback.error(R.string.error_publish_avatar_converting, null);
1672		}
1673	}
1674
1675	public void fetchAvatar(Account account, Avatar avatar) {
1676		fetchAvatar(account, avatar, null);
1677	}
1678
1679	public void fetchAvatar(Account account, final Avatar avatar,
1680			final UiCallback<Avatar> callback) {
1681		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1682		sendIqPacket(account, packet, new OnIqPacketReceived() {
1683
1684			@Override
1685			public void onIqPacketReceived(Account account, IqPacket result) {
1686				final String ERROR = account.getJid().toBareJid()
1687						+ ": fetching avatar for " + avatar.owner + " failed ";
1688				if (result.getType() == IqPacket.TYPE_RESULT) {
1689					avatar.image = mIqParser.avatarData(result);
1690					if (avatar.image != null) {
1691						if (getFileBackend().save(avatar)) {
1692							if (account.getJid().toBareJid().equals(avatar.owner)) {
1693								if (account.setAvatar(avatar.getFilename())) {
1694									databaseBackend.updateAccount(account);
1695								}
1696								getAvatarService().clear(account);
1697								updateConversationUi();
1698								updateAccountUi();
1699							} else {
1700								Contact contact = account.getRoster()
1701										.getContact(avatar.owner);
1702								contact.setAvatar(avatar.getFilename());
1703								getAvatarService().clear(contact);
1704								updateConversationUi();
1705								updateRosterUi();
1706							}
1707							if (callback != null) {
1708								callback.success(avatar);
1709							}
1710							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1711									+ ": succesfully fetched avatar for "
1712									+ avatar.owner);
1713							return;
1714						}
1715					} else {
1716
1717						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1718					}
1719				} else {
1720					Element error = result.findChild("error");
1721					if (error == null) {
1722						Log.d(Config.LOGTAG, ERROR + "(server error)");
1723					} else {
1724						Log.d(Config.LOGTAG, ERROR + error.toString());
1725					}
1726				}
1727				if (callback != null) {
1728					callback.error(0, null);
1729				}
1730
1731			}
1732		});
1733	}
1734
1735	public void checkForAvatar(Account account,
1736			final UiCallback<Avatar> callback) {
1737		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1738		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1739
1740			@Override
1741			public void onIqPacketReceived(Account account, IqPacket packet) {
1742				if (packet.getType() == IqPacket.TYPE_RESULT) {
1743					Element pubsub = packet.findChild("pubsub",
1744							"http://jabber.org/protocol/pubsub");
1745					if (pubsub != null) {
1746						Element items = pubsub.findChild("items");
1747						if (items != null) {
1748							Avatar avatar = Avatar.parseMetadata(items);
1749							if (avatar != null) {
1750								avatar.owner = account.getJid().toBareJid();
1751								if (fileBackend.isAvatarCached(avatar)) {
1752									if (account.setAvatar(avatar.getFilename())) {
1753										databaseBackend.updateAccount(account);
1754									}
1755									getAvatarService().clear(account);
1756									callback.success(avatar);
1757								} else {
1758									fetchAvatar(account, avatar, callback);
1759								}
1760								return;
1761							}
1762						}
1763					}
1764				}
1765				callback.error(0, null);
1766			}
1767		});
1768	}
1769
1770	public void deleteContactOnServer(Contact contact) {
1771		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1772		contact.resetOption(Contact.Options.DIRTY_PUSH);
1773		contact.setOption(Contact.Options.DIRTY_DELETE);
1774		Account account = contact.getAccount();
1775		if (account.getStatus() == Account.State.ONLINE) {
1776			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1777			Element item = iq.query("jabber:iq:roster").addChild("item");
1778			item.setAttribute("jid", contact.getJid().toString());
1779			item.setAttribute("subscription", "remove");
1780			account.getXmppConnection().sendIqPacket(iq, null);
1781		}
1782	}
1783
1784	public void updateConversation(Conversation conversation) {
1785		this.databaseBackend.updateConversation(conversation);
1786	}
1787
1788	public void reconnectAccount(final Account account, final boolean force) {
1789		new Thread(new Runnable() {
1790
1791			@Override
1792			public void run() {
1793				if (account.getXmppConnection() != null) {
1794					disconnect(account, force);
1795				}
1796				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1797					if (account.getXmppConnection() == null) {
1798						account.setXmppConnection(createConnection(account));
1799					}
1800					Thread thread = new Thread(account.getXmppConnection());
1801					thread.start();
1802					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1803							false);
1804				} else {
1805					account.getRoster().clearPresences();
1806					account.setXmppConnection(null);
1807				}
1808			}
1809		}).start();
1810	}
1811
1812	public void invite(Conversation conversation, Jid contact) {
1813		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1814		sendMessagePacket(conversation.getAccount(), packet);
1815	}
1816
1817	public void resetSendingToWaiting(Account account) {
1818		for (Conversation conversation : getConversations()) {
1819			if (conversation.getAccount() == account) {
1820				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1821
1822					@Override
1823					public void onMessageFound(Message message) {
1824						markMessage(message, Message.STATUS_WAITING);
1825					}
1826				});
1827			}
1828		}
1829	}
1830
1831	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1832			final int status) {
1833		if (uuid == null) {
1834			return false;
1835		} else {
1836			for (Conversation conversation : getConversations()) {
1837				if (conversation.getContactJid().equals(recipient)
1838						&& conversation.getAccount().equals(account)) {
1839					return markMessage(conversation, uuid, status);
1840						}
1841			}
1842			return false;
1843		}
1844	}
1845
1846	public boolean markMessage(Conversation conversation, String uuid,
1847			int status) {
1848		if (uuid == null) {
1849			return false;
1850		} else {
1851			Message message = conversation.findSentMessageWithUuid(uuid);
1852			if (message!=null) {
1853				markMessage(message,status);
1854				return true;
1855			} else {
1856				return false;
1857			}
1858		}
1859	}
1860
1861	public void markMessage(Message message, int status) {
1862		if (status == Message.STATUS_SEND_FAILED
1863				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1864					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1865			return;
1866					}
1867		message.setStatus(status);
1868		databaseBackend.updateMessage(message);
1869		updateConversationUi();
1870	}
1871
1872	public SharedPreferences getPreferences() {
1873		return PreferenceManager
1874			.getDefaultSharedPreferences(getApplicationContext());
1875	}
1876
1877	public boolean forceEncryption() {
1878		return getPreferences().getBoolean("force_encryption", false);
1879	}
1880
1881	public boolean confirmMessages() {
1882		return getPreferences().getBoolean("confirm_messages", true);
1883	}
1884
1885	public boolean saveEncryptedMessages() {
1886		return !getPreferences().getBoolean("dont_save_encrypted", false);
1887	}
1888
1889	public boolean indicateReceived() {
1890		return getPreferences().getBoolean("indicate_received", false);
1891	}
1892
1893	public void updateConversationUi() {
1894		if (mOnConversationUpdate != null) {
1895			mOnConversationUpdate.onConversationUpdate();
1896		}
1897	}
1898
1899	public void updateAccountUi() {
1900		if (mOnAccountUpdate != null) {
1901			mOnAccountUpdate.onAccountUpdate();
1902		}
1903	}
1904
1905	public void updateRosterUi() {
1906		if (mOnRosterUpdate != null) {
1907			mOnRosterUpdate.onRosterUpdate();
1908		}
1909	}
1910
1911	public void updateMucRosterUi() {
1912		if (mOnMucRosterUpdate != null) {
1913			mOnMucRosterUpdate.onMucRosterUpdate();
1914		}
1915	}
1916
1917	public Account findAccountByJid(final Jid accountJid) {
1918		for (Account account : this.accounts) {
1919			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1920				return account;
1921			}
1922		}
1923		return null;
1924	}
1925
1926	public Conversation findConversationByUuid(String uuid) {
1927		for (Conversation conversation : getConversations()) {
1928			if (conversation.getUuid().equals(uuid)) {
1929				return conversation;
1930			}
1931		}
1932		return null;
1933	}
1934
1935	public void markRead(Conversation conversation, boolean calledByUi) {
1936		mNotificationService.clear(conversation);
1937		final Message markable = conversation.getLatestMarkableMessage();
1938		conversation.markRead();
1939		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1940			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1941			Account account = conversation.getAccount();
1942			final Jid to = markable.getCounterpart();
1943			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1944			this.sendMessagePacket(conversation.getAccount(),packet);
1945		}
1946		if (!calledByUi) {
1947			updateConversationUi();
1948		}
1949	}
1950
1951	public SecureRandom getRNG() {
1952		return this.mRandom;
1953	}
1954
1955	public MemorizingTrustManager getMemorizingTrustManager() {
1956		return this.mMemorizingTrustManager;
1957	}
1958
1959	public PowerManager getPowerManager() {
1960		return this.pm;
1961	}
1962
1963	public LruCache<String, Bitmap> getBitmapCache() {
1964		return this.mBitmapCache;
1965	}
1966
1967	public void syncRosterToDisk(final Account account) {
1968		new Thread(new Runnable() {
1969
1970			@Override
1971			public void run() {
1972				databaseBackend.writeRoster(account.getRoster());
1973			}
1974		}).start();
1975
1976	}
1977
1978	public List<String> getKnownHosts() {
1979		List<String> hosts = new ArrayList<>();
1980		for (Account account : getAccounts()) {
1981			if (!hosts.contains(account.getServer().toString())) {
1982				hosts.add(account.getServer().toString());
1983			}
1984			for (Contact contact : account.getRoster().getContacts()) {
1985				if (contact.showInRoster()) {
1986					final String server = contact.getServer().toString();
1987					if (server != null && !hosts.contains(server)) {
1988						hosts.add(server);
1989					}
1990				}
1991			}
1992		}
1993		return hosts;
1994	}
1995
1996	public List<String> getKnownConferenceHosts() {
1997		ArrayList<String> mucServers = new ArrayList<>();
1998		for (Account account : accounts) {
1999			if (account.getXmppConnection() != null) {
2000				String server = account.getXmppConnection().getMucServer();
2001				if (server != null && !mucServers.contains(server)) {
2002					mucServers.add(server);
2003				}
2004			}
2005		}
2006		return mucServers;
2007	}
2008
2009	public void sendMessagePacket(Account account, MessagePacket packet) {
2010		XmppConnection connection = account.getXmppConnection();
2011		if (connection != null) {
2012			connection.sendMessagePacket(packet);
2013		}
2014	}
2015
2016	public void sendPresencePacket(Account account, PresencePacket packet) {
2017		XmppConnection connection = account.getXmppConnection();
2018		if (connection != null) {
2019			connection.sendPresencePacket(packet);
2020		}
2021	}
2022
2023	public void sendIqPacket(Account account, IqPacket packet,
2024			OnIqPacketReceived callback) {
2025		XmppConnection connection = account.getXmppConnection();
2026		if (connection != null) {
2027			connection.sendIqPacket(packet, callback);
2028		}
2029	}
2030
2031	public MessageGenerator getMessageGenerator() {
2032		return this.mMessageGenerator;
2033	}
2034
2035	public PresenceGenerator getPresenceGenerator() {
2036		return this.mPresenceGenerator;
2037	}
2038
2039	public IqGenerator getIqGenerator() {
2040		return this.mIqGenerator;
2041	}
2042
2043	public JingleConnectionManager getJingleConnectionManager() {
2044		return this.mJingleConnectionManager;
2045	}
2046
2047	public MessageArchiveService getMessageArchiveService() {
2048		return this.mMessageArchiveService;
2049	}
2050
2051	public List<Contact> findContacts(Jid jid) {
2052		ArrayList<Contact> contacts = new ArrayList<>();
2053		for (Account account : getAccounts()) {
2054			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2055				Contact contact = account.getRoster().getContactFromRoster(jid);
2056				if (contact != null) {
2057					contacts.add(contact);
2058				}
2059			}
2060		}
2061		return contacts;
2062	}
2063
2064	public NotificationService getNotificationService() {
2065		return this.mNotificationService;
2066	}
2067
2068	public HttpConnectionManager getHttpConnectionManager() {
2069		return this.mHttpConnectionManager;
2070	}
2071
2072	public void resendFailedMessages(Message message) {
2073		List<Message> messages = new ArrayList<>();
2074		Message current = message;
2075		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2076			messages.add(current);
2077			if (current.mergeable(current.next())) {
2078				current = current.next();
2079			} else {
2080				break;
2081			}
2082		}
2083		for (Message msg : messages) {
2084			markMessage(msg, Message.STATUS_WAITING);
2085			this.resendMessage(msg);
2086		}
2087	}
2088
2089	public void clearConversationHistory(final Conversation conversation) {
2090		conversation.clearMessages();
2091		new Thread(new Runnable() {
2092			@Override
2093			public void run() {
2094				databaseBackend.deleteMessagesInConversation(conversation);
2095			}
2096		}).start();
2097	}
2098
2099	public interface OnConversationUpdate {
2100		public void onConversationUpdate();
2101	}
2102
2103	public interface OnAccountUpdate {
2104		public void onAccountUpdate();
2105	}
2106
2107	public interface OnRosterUpdate {
2108		public void onRosterUpdate();
2109	}
2110
2111	public interface OnMucRosterUpdate {
2112		public void onMucRosterUpdate();
2113	}
2114
2115	private interface OnConferenceOptionsPushed {
2116		public void onPushSucceeded();
2117		public void onPushFailed();
2118	}
2119
2120	public class XmppConnectionBinder extends Binder {
2121		public XmppConnectionService getService() {
2122			return XmppConnectionService.this;
2123		}
2124	}
2125}