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.utils.UIHelper;
  82import eu.siacs.conversations.xml.Element;
  83import eu.siacs.conversations.xmpp.OnBindListener;
  84import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  85import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  86import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  87import eu.siacs.conversations.xmpp.OnStatusChanged;
  88import eu.siacs.conversations.xmpp.XmppConnection;
  89import eu.siacs.conversations.xmpp.forms.Data;
  90import eu.siacs.conversations.xmpp.forms.Field;
  91import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  92import eu.siacs.conversations.xmpp.jid.Jid;
  93import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  94import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  95import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  96import eu.siacs.conversations.xmpp.pep.Avatar;
  97import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  98import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  99import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 100
 101public class XmppConnectionService extends Service {
 102
 103	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 104	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 105	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 106	private ContentObserver contactObserver = new ContentObserver(null) {
 107		@Override
 108		public void onChange(boolean selfChange) {
 109			super.onChange(selfChange);
 110			Intent intent = new Intent(getApplicationContext(),
 111					XmppConnectionService.class);
 112			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 113			startService(intent);
 114		}
 115	};
 116	private final IBinder mBinder = new XmppConnectionBinder();
 117	public DatabaseBackend databaseBackend;
 118	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 119
 120		@Override
 121		public void onContactStatusChanged(Contact contact, boolean online) {
 122			Conversation conversation = find(getConversations(), contact);
 123			if (conversation != null) {
 124				if (online && contact.getPresences().size() > 1) {
 125					conversation.endOtrIfNeeded();
 126				} else {
 127					conversation.resetOtrSession();
 128				}
 129				if (online && (contact.getPresences().size() == 1)) {
 130					sendUnsendMessages(conversation);
 131				}
 132			}
 133		}
 134	};
 135	private FileBackend fileBackend = new FileBackend(this);
 136	private MemorizingTrustManager mMemorizingTrustManager;
 137	private NotificationService mNotificationService = new NotificationService(
 138			this);
 139	private MessageParser mMessageParser = new MessageParser(this);
 140	private PresenceParser mPresenceParser = new PresenceParser(this);
 141	private IqParser mIqParser = new IqParser(this);
 142	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 143	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 144	private List<Account> accounts;
 145	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 146	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 147			this);
 148	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 149			this);
 150	private AvatarService mAvatarService = new AvatarService(this);
 151	private OnConversationUpdate mOnConversationUpdate = null;
 152	private Integer convChangedListenerCount = 0;
 153	private OnAccountUpdate mOnAccountUpdate = null;
 154	private OnStatusChanged statusListener = new OnStatusChanged() {
 155
 156		@Override
 157		public void onStatusChanged(Account account) {
 158			XmppConnection connection = account.getXmppConnection();
 159			if (mOnAccountUpdate != null) {
 160				mOnAccountUpdate.onAccountUpdate();
 161			}
 162			if (account.getStatus() == Account.State.ONLINE) {
 163				for (Conversation conversation : account.pendingConferenceLeaves) {
 164					leaveMuc(conversation);
 165				}
 166				for (Conversation conversation : account.pendingConferenceJoins) {
 167					joinMuc(conversation);
 168				}
 169				mJingleConnectionManager.cancelInTransmission();
 170				List<Conversation> conversations = getConversations();
 171				for (Conversation conversation : conversations) {
 172					if (conversation.getAccount() == account) {
 173						conversation.startOtrIfNeeded();
 174						sendUnsendMessages(conversation);
 175					}
 176				}
 177				if (connection != null && connection.getFeatures().csi()) {
 178					if (checkListeners()) {
 179						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 180								+ " sending csi//inactive");
 181						connection.sendInactive();
 182					} else {
 183						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 184								+ " sending csi//active");
 185						connection.sendActive();
 186					}
 187				}
 188				syncDirtyContacts(account);
 189				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 190			} else if (account.getStatus() == Account.State.OFFLINE) {
 191				resetSendingToWaiting(account);
 192				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 193					int timeToReconnect = mRandom.nextInt(50) + 10;
 194					scheduleWakeupCall(timeToReconnect, false);
 195				}
 196			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 197				databaseBackend.updateAccount(account);
 198				reconnectAccount(account, true);
 199			} else if ((account.getStatus() != Account.State.CONNECTING)
 200					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 201				if (connection != null) {
 202					int next = connection.getTimeToNextAttempt();
 203					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 204							+ ": error connecting account. try again in "
 205							+ next + "s for the "
 206							+ (connection.getAttempt() + 1) + " time");
 207					scheduleWakeupCall((int) (next * 1.2), false);
 208				}
 209					}
 210			getNotificationService().updateErrorNotification();
 211		}
 212	};
 213	private Integer accountChangedListenerCount = 0;
 214	private OnRosterUpdate mOnRosterUpdate = null;
 215	private Integer rosterChangedListenerCount = 0;
 216	private SecureRandom mRandom;
 217	private FileObserver fileObserver = new FileObserver(
 218			FileBackend.getConversationsImageDirectory()) {
 219
 220		@Override
 221		public void onEvent(int event, String path) {
 222			if (event == FileObserver.DELETE) {
 223				markFileDeleted(path.split("\\.")[0]);
 224			}
 225		}
 226	};
 227	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 228
 229		@Override
 230		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 231			mJingleConnectionManager.deliverPacket(account, packet);
 232		}
 233	};
 234
 235	private OpenPgpServiceConnection pgpServiceConnection;
 236	private PgpEngine mPgpEngine = null;
 237	private Intent pingIntent;
 238	private PendingIntent pendingPingIntent = null;
 239	private WakeLock wakeLock;
 240	private PowerManager pm;
 241	private OnBindListener mOnBindListener = new OnBindListener() {
 242
 243		@Override
 244		public void onBind(final Account account) {
 245			account.getRoster().clearPresences();
 246			account.clearPresences(); // self presences
 247			account.pendingConferenceJoins.clear();
 248			account.pendingConferenceLeaves.clear();
 249			fetchRosterFromServer(account);
 250			fetchBookmarks(account);
 251			sendPresencePacket(account,
 252					mPresenceGenerator.sendPresence(account));
 253			connectMultiModeConversations(account);
 254			updateConversationUi();
 255		}
 256	};
 257
 258	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 259
 260		@Override
 261		public void onMessageAcknowledged(Account account, String uuid) {
 262			for (Conversation conversation : getConversations()) {
 263				if (conversation.getAccount() == account) {
 264					for (Message message : conversation.getMessages()) {
 265						if ((message.getStatus() == Message.STATUS_UNSEND || message
 266									.getStatus() == Message.STATUS_WAITING)
 267								&& message.getUuid().equals(uuid)) {
 268							markMessage(message, Message.STATUS_SEND);
 269							return;
 270								}
 271					}
 272				}
 273			}
 274		}
 275	};
 276	private LruCache<String, Bitmap> mBitmapCache;
 277	private IqGenerator mIqGenerator = new IqGenerator(this);
 278
 279	public PgpEngine getPgpEngine() {
 280		if (pgpServiceConnection.isBound()) {
 281			if (this.mPgpEngine == null) {
 282				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 283							getApplicationContext(),
 284							pgpServiceConnection.getService()), this);
 285			}
 286			return mPgpEngine;
 287		} else {
 288			return null;
 289		}
 290
 291	}
 292
 293	public FileBackend getFileBackend() {
 294		return this.fileBackend;
 295	}
 296
 297	public AvatarService getAvatarService() {
 298		return this.mAvatarService;
 299	}
 300
 301	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 302		final Message message;
 303		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 304			message = new Message(conversation, "",
 305					Message.ENCRYPTION_DECRYPTED);
 306		} else {
 307			message = new Message(conversation, "",
 308					conversation.getNextEncryption(forceEncryption()));
 309		}
 310		message.setCounterpart(conversation.getNextCounterpart());
 311		message.setType(Message.TYPE_FILE);
 312		message.setStatus(Message.STATUS_OFFERED);
 313		String path = getFileBackend().getOriginalPath(uri);
 314		if (path!=null) {
 315			message.setRelativeFilePath(path);
 316			getFileBackend().updateFileParams(message);
 317			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 318				getPgpEngine().encrypt(message, callback);
 319			} else {
 320				callback.success(message);
 321			}
 322		} else {
 323			new Thread(new Runnable() {
 324				@Override
 325				public void run() {
 326					try {
 327						getFileBackend().copyFileToPrivateStorage(message, uri);
 328						getFileBackend().updateFileParams(message);
 329						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 330							getPgpEngine().encrypt(message, callback);
 331						} else {
 332							callback.success(message);
 333						}
 334					} catch (FileBackend.FileCopyException e) {
 335						callback.error(e.getResId(),message);
 336					}
 337				}
 338			}).start();
 339
 340		}
 341	}
 342
 343	public void attachImageToConversation(final Conversation conversation,
 344			final Uri uri, final UiCallback<Message> callback) {
 345		final Message message;
 346		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 347			message = new Message(conversation, "",
 348					Message.ENCRYPTION_DECRYPTED);
 349		} else {
 350			message = new Message(conversation, "",
 351					conversation.getNextEncryption(forceEncryption()));
 352		}
 353		message.setCounterpart(conversation.getNextCounterpart());
 354		message.setType(Message.TYPE_IMAGE);
 355		message.setStatus(Message.STATUS_OFFERED);
 356		new Thread(new Runnable() {
 357
 358			@Override
 359			public void run() {
 360				try {
 361					DownloadableFile file = getFileBackend().copyImageToPrivateStorage(message, uri);
 362					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 363						getPgpEngine().encrypt(message, callback);
 364					} else {
 365						callback.success(message);
 366					}
 367				} catch (FileBackend.FileCopyException e) {
 368					callback.error(e.getResId(), message);
 369				}
 370			}
 371		}).start();
 372	}
 373
 374	public Conversation find(Bookmark bookmark) {
 375		return find(bookmark.getAccount(), bookmark.getJid());
 376	}
 377
 378	public Conversation find(final Account account, final Jid jid) {
 379		return find(getConversations(), account, jid);
 380	}
 381
 382	@Override
 383	public int onStartCommand(Intent intent, int flags, int startId) {
 384		if (intent != null && intent.getAction() != null) {
 385			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 386				mergePhoneContactsWithRoster();
 387				return START_STICKY;
 388			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 389				logoutAndSave();
 390				return START_NOT_STICKY;
 391			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 392				mNotificationService.clear();
 393			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 394				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 395				toggleForegroundService();
 396			}
 397		}
 398		this.wakeLock.acquire();
 399
 400		for (Account account : accounts) {
 401			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 402				if (!hasInternetConnection()) {
 403					account.setStatus(Account.State.NO_INTERNET);
 404					if (statusListener != null) {
 405						statusListener.onStatusChanged(account);
 406					}
 407				} else {
 408					if (account.getStatus() == Account.State.NO_INTERNET) {
 409						account.setStatus(Account.State.OFFLINE);
 410						if (statusListener != null) {
 411							statusListener.onStatusChanged(account);
 412						}
 413					}
 414					if (account.getStatus() == Account.State.ONLINE) {
 415						long lastReceived = account.getXmppConnection()
 416							.getLastPacketReceived();
 417						long lastSent = account.getXmppConnection()
 418							.getLastPingSent();
 419						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 420							Log.d(Config.LOGTAG, account.getJid()
 421									+ ": ping timeout");
 422							this.reconnectAccount(account, true);
 423						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 424							account.getXmppConnection().sendPing();
 425							this.scheduleWakeupCall(2, false);
 426						}
 427					} else if (account.getStatus() == Account.State.OFFLINE) {
 428						if (account.getXmppConnection() == null) {
 429							account.setXmppConnection(this
 430									.createConnection(account));
 431						}
 432						new Thread(account.getXmppConnection()).start();
 433					} else if ((account.getStatus() == Account.State.CONNECTING)
 434							&& ((SystemClock.elapsedRealtime() - account
 435									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 436						Log.d(Config.LOGTAG, account.getJid()
 437								+ ": time out during connect reconnecting");
 438						reconnectAccount(account, true);
 439					} else {
 440						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 441							reconnectAccount(account, true);
 442						}
 443					}
 444					// in any case. reschedule wakup call
 445					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 446				}
 447				if (mOnAccountUpdate != null) {
 448					mOnAccountUpdate.onAccountUpdate();
 449				}
 450			}
 451		}
 452		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 453			if (!pm.isScreenOn()) {
 454			removeStaleListeners();
 455			}*/
 456		if (wakeLock.isHeld()) {
 457			try {
 458				wakeLock.release();
 459			} catch (final RuntimeException ignored) {
 460			}
 461		}
 462		return START_STICKY;
 463	}
 464
 465	public boolean hasInternetConnection() {
 466		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 467			.getSystemService(Context.CONNECTIVITY_SERVICE);
 468		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 469		return activeNetwork != null && activeNetwork.isConnected();
 470	}
 471
 472	@SuppressLint("TrulyRandom")
 473	@Override
 474	public void onCreate() {
 475		ExceptionHelper.init(getApplicationContext());
 476		PRNGFixes.apply();
 477		this.mRandom = new SecureRandom();
 478		this.mMemorizingTrustManager = new MemorizingTrustManager(
 479				getApplicationContext());
 480
 481		int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 482		int cacheSize = maxMemory / 8;
 483		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 484			@Override
 485			protected int sizeOf(String key, Bitmap bitmap) {
 486				return bitmap.getByteCount() / 1024;
 487			}
 488		};
 489
 490		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 491		this.accounts = databaseBackend.getAccounts();
 492
 493		for (Account account : this.accounts) {
 494			account.initOtrEngine(this);
 495			this.databaseBackend.readRoster(account.getRoster());
 496		}
 497		initConversations();
 498		this.mergePhoneContactsWithRoster();
 499
 500		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 501		this.fileObserver.startWatching();
 502		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 503		this.pgpServiceConnection.bindToService();
 504
 505		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 506		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 507		toggleForegroundService();
 508	}
 509
 510	public void toggleForegroundService() {
 511		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 512			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 513		} else {
 514			stopForeground(true);
 515		}
 516	}
 517
 518	@Override
 519	public void onTaskRemoved(Intent rootIntent) {
 520		super.onTaskRemoved(rootIntent);
 521		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 522			this.logoutAndSave();
 523		}
 524	}
 525
 526	private void logoutAndSave() {
 527		for (Account account : accounts) {
 528			databaseBackend.writeRoster(account.getRoster());
 529			if (account.getXmppConnection() != null) {
 530				disconnect(account, false);
 531			}
 532		}
 533		Context context = getApplicationContext();
 534		AlarmManager alarmManager = (AlarmManager) context
 535			.getSystemService(Context.ALARM_SERVICE);
 536		Intent intent = new Intent(context, EventReceiver.class);
 537		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 538		Log.d(Config.LOGTAG, "good bye");
 539		stopSelf();
 540	}
 541
 542	protected void scheduleWakeupCall(int seconds, boolean ping) {
 543		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 544		Context context = getApplicationContext();
 545		AlarmManager alarmManager = (AlarmManager) context
 546			.getSystemService(Context.ALARM_SERVICE);
 547
 548		if (ping) {
 549			if (this.pingIntent == null) {
 550				this.pingIntent = new Intent(context, EventReceiver.class);
 551				this.pingIntent.setAction("ping");
 552				this.pingIntent.putExtra("time", timeToWake);
 553				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 554						this.pingIntent, 0);
 555				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 556						timeToWake, pendingPingIntent);
 557			} else {
 558				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 559				if (scheduledTime < SystemClock.elapsedRealtime()
 560						|| (scheduledTime > timeToWake)) {
 561					this.pingIntent.putExtra("time", timeToWake);
 562					alarmManager.cancel(this.pendingPingIntent);
 563					this.pendingPingIntent = PendingIntent.getBroadcast(
 564							context, 0, this.pingIntent, 0);
 565					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 566							timeToWake, pendingPingIntent);
 567						}
 568			}
 569		} else {
 570			Intent intent = new Intent(context, EventReceiver.class);
 571			intent.setAction("ping_check");
 572			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 573					intent, 0);
 574			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 575					alarmIntent);
 576		}
 577
 578	}
 579
 580	public XmppConnection createConnection(Account account) {
 581		SharedPreferences sharedPref = getPreferences();
 582		account.setResource(sharedPref.getString("resource", "mobile")
 583				.toLowerCase(Locale.getDefault()));
 584		XmppConnection connection = new XmppConnection(account, this);
 585		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 586		connection.setOnStatusChangedListener(this.statusListener);
 587		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 588		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 589		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 590		connection.setOnBindListener(this.mOnBindListener);
 591		connection
 592			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 593		return connection;
 594	}
 595
 596	public void sendMessage(Message message) {
 597		Account account = message.getConversation().getAccount();
 598		account.deactivateGracePeriod();
 599		Conversation conv = message.getConversation();
 600		MessagePacket packet = null;
 601		boolean saveInDb = true;
 602		boolean send = false;
 603		if (account.getStatus() == Account.State.ONLINE
 604				&& account.getXmppConnection() != null) {
 605			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 606				if (message.getCounterpart() != null) {
 607					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 608						if (!conv.hasValidOtrSession()) {
 609							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 610							message.setStatus(Message.STATUS_WAITING);
 611						} else if (conv.hasValidOtrSession()
 612								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 613							mJingleConnectionManager
 614								.createNewConnection(message);
 615								}
 616					} else {
 617						mJingleConnectionManager.createNewConnection(message);
 618					}
 619				} else {
 620					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 621						conv.startOtrIfNeeded();
 622					}
 623					message.setStatus(Message.STATUS_WAITING);
 624				}
 625			} else {
 626				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 627					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 628						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 629						message.setStatus(Message.STATUS_WAITING);
 630					} else if (conv.hasValidOtrSession()) {
 631						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 632							packet = mMessageGenerator.generateOtrChat(message);
 633							send = true;
 634						} else {
 635							message.setStatus(Message.STATUS_WAITING);
 636							conv.startOtrIfNeeded();
 637						}
 638					} else {
 639						message.setStatus(Message.STATUS_WAITING);
 640					}
 641				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 642					message.getConversation().endOtrIfNeeded();
 643					failWaitingOtrMessages(message.getConversation());
 644					packet = mMessageGenerator.generatePgpChat(message);
 645					send = true;
 646				} else {
 647					message.getConversation().endOtrIfNeeded();
 648					failWaitingOtrMessages(message.getConversation());
 649					packet = mMessageGenerator.generateChat(message);
 650					send = true;
 651				}
 652			}
 653			if (!account.getXmppConnection().getFeatures().sm()
 654					&& conv.getMode() != Conversation.MODE_MULTI) {
 655				message.setStatus(Message.STATUS_SEND);
 656					}
 657		} else {
 658			message.setStatus(Message.STATUS_WAITING);
 659			if (message.getType() == Message.TYPE_TEXT) {
 660				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 661					String pgpBody = message.getEncryptedBody();
 662					String decryptedBody = message.getBody();
 663					message.setBody(pgpBody);
 664					message.setEncryption(Message.ENCRYPTION_PGP);
 665					databaseBackend.createMessage(message);
 666					saveInDb = false;
 667					message.setBody(decryptedBody);
 668					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 669				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 670					if (!conv.hasValidOtrSession()
 671							&& message.getCounterpart() != null) {
 672						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 673							}
 674				}
 675			}
 676
 677		}
 678		conv.add(message);
 679		if (saveInDb) {
 680			if (message.getEncryption() == Message.ENCRYPTION_NONE
 681					|| saveEncryptedMessages()) {
 682				databaseBackend.createMessage(message);
 683					}
 684		}
 685		if ((send) && (packet != null)) {
 686			sendMessagePacket(account, packet);
 687		}
 688		updateConversationUi();
 689	}
 690
 691	private void sendUnsendMessages(Conversation conversation) {
 692		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 693			int status = conversation.getMessages().get(i).getStatus();
 694			if (status == Message.STATUS_WAITING) {
 695				resendMessage(conversation.getMessages().get(i));
 696			}
 697		}
 698	}
 699
 700	private void resendMessage(Message message) {
 701		Account account = message.getConversation().getAccount();
 702		MessagePacket packet = null;
 703		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 704			Presences presences = message.getConversation().getContact()
 705				.getPresences();
 706			if (!message.getConversation().hasValidOtrSession()) {
 707				if ((message.getCounterpart() != null)
 708						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 709					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 710				} else {
 711					if (presences.size() == 1) {
 712						String presence = presences.asStringArray()[0];
 713						message.getConversation().startOtrSession(presence, true);
 714					}
 715				}
 716			} else {
 717				if (message.getConversation().getOtrSession()
 718						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 719					try {
 720						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 721						if (message.getType() == Message.TYPE_TEXT) {
 722							packet = mMessageGenerator.generateOtrChat(message,
 723									true);
 724						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 725							mJingleConnectionManager.createNewConnection(message);
 726						}
 727					} catch (InvalidJidException e) {
 728
 729					}
 730						}
 731			}
 732		} else if (message.getType() == Message.TYPE_TEXT) {
 733			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 734				packet = mMessageGenerator.generateChat(message, true);
 735			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 736					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 737				packet = mMessageGenerator.generatePgpChat(message, true);
 738					}
 739		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 740			Contact contact = message.getConversation().getContact();
 741			Presences presences = contact.getPresences();
 742			if ((message.getCounterpart() != null)
 743					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 744				markMessage(message, Message.STATUS_OFFERED);
 745				mJingleConnectionManager.createNewConnection(message);
 746			} else {
 747				if (presences.size() == 1) {
 748					String presence = presences.asStringArray()[0];
 749					try {
 750						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 751					} catch (InvalidJidException e) {
 752						return;
 753					}
 754					markMessage(message, Message.STATUS_OFFERED);
 755					mJingleConnectionManager.createNewConnection(message);
 756				}
 757			}
 758		}
 759		if (packet != null) {
 760			if (!account.getXmppConnection().getFeatures().sm()
 761					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 762				markMessage(message, Message.STATUS_SEND);
 763			} else {
 764				markMessage(message, Message.STATUS_UNSEND);
 765			}
 766			sendMessagePacket(account, packet);
 767		}
 768	}
 769
 770	public void fetchRosterFromServer(Account account) {
 771		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 772		if (!"".equals(account.getRosterVersion())) {
 773			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 774					+ ": fetching roster version " + account.getRosterVersion());
 775		} else {
 776			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 777		}
 778		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 779				account.getRosterVersion());
 780		account.getXmppConnection().sendIqPacket(iqPacket,
 781				new OnIqPacketReceived() {
 782
 783					@Override
 784					public void onIqPacketReceived(final Account account,
 785							IqPacket packet) {
 786						Element query = packet.findChild("query");
 787						if (query != null) {
 788							account.getRoster().markAllAsNotInRoster();
 789							mIqParser.rosterItems(account, query);
 790						}
 791					}
 792				});
 793	}
 794
 795	public void fetchBookmarks(Account account) {
 796		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 797		Element query = iqPacket.query("jabber:iq:private");
 798		query.addChild("storage", "storage:bookmarks");
 799		OnIqPacketReceived callback = new OnIqPacketReceived() {
 800
 801			@Override
 802			public void onIqPacketReceived(Account account, IqPacket packet) {
 803				Element query = packet.query();
 804				List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 805				Element storage = query.findChild("storage",
 806						"storage:bookmarks");
 807				if (storage != null) {
 808					for (Element item : storage.getChildren()) {
 809						if (item.getName().equals("conference")) {
 810							Bookmark bookmark = Bookmark.parse(item, account);
 811							bookmarks.add(bookmark);
 812							Conversation conversation = find(bookmark);
 813							if (conversation != null) {
 814								conversation.setBookmark(bookmark);
 815							} else {
 816								if (bookmark.autojoin()) {
 817									conversation = findOrCreateConversation(
 818											account, bookmark.getJid(), true);
 819									conversation.setBookmark(bookmark);
 820									joinMuc(conversation);
 821								}
 822							}
 823						}
 824					}
 825				}
 826				account.setBookmarks(bookmarks);
 827			}
 828		};
 829		sendIqPacket(account, iqPacket, callback);
 830
 831	}
 832
 833	public void pushBookmarks(Account account) {
 834		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 835		Element query = iqPacket.query("jabber:iq:private");
 836		Element storage = query.addChild("storage", "storage:bookmarks");
 837		for (Bookmark bookmark : account.getBookmarks()) {
 838			storage.addChild(bookmark);
 839		}
 840		sendIqPacket(account, iqPacket, null);
 841	}
 842
 843	private void mergePhoneContactsWithRoster() {
 844		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 845				new OnPhoneContactsLoadedListener() {
 846					@Override
 847					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 848						for (Account account : accounts) {
 849							account.getRoster().clearSystemAccounts();
 850						}
 851						for (Bundle phoneContact : phoneContacts) {
 852							for (Account account : accounts) {
 853								Jid jid;
 854								try {
 855									jid = Jid.fromString(phoneContact.getString("jid"));
 856								} catch (final InvalidJidException e) {
 857									// TODO: Warn if contact import fails here?
 858									break;
 859								}
 860								final Contact contact = account.getRoster()
 861									.getContact(jid);
 862								String systemAccount = phoneContact
 863									.getInt("phoneid")
 864									+ "#"
 865									+ phoneContact.getString("lookup");
 866								contact.setSystemAccount(systemAccount);
 867								contact.setPhotoUri(phoneContact
 868										.getString("photouri"));
 869								contact.setSystemName(phoneContact
 870										.getString("displayname"));
 871								getAvatarService().clear(contact);
 872							}
 873						}
 874					}
 875				});
 876	}
 877
 878	private void initConversations() {
 879		synchronized (this.conversations) {
 880			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 881			for (Account account : this.accounts) {
 882				accountLookupTable.put(account.getUuid(), account);
 883			}
 884			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 885			for (Conversation conv : this.conversations) {
 886				Account account = accountLookupTable.get(conv.getAccountUuid());
 887				conv.setAccount(account);
 888				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 889				checkDeletedFiles(conv);
 890			}
 891		}
 892	}
 893
 894	public List<Conversation> getConversations() {
 895		return this.conversations;
 896	}
 897
 898	private void checkDeletedFiles(Conversation conversation) {
 899		for (Message message : conversation.getMessages()) {
 900			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 901					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 902				if (!getFileBackend().isFileAvailable(message)) {
 903					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 904				}
 905					}
 906		}
 907	}
 908
 909	private void markFileDeleted(String uuid) {
 910		for (Conversation conversation : getConversations()) {
 911			for (Message message : conversation.getMessages()) {
 912				if (message.getType() == Message.TYPE_IMAGE
 913						&& message.getEncryption() != Message.ENCRYPTION_PGP
 914						&& message.getUuid().equals(uuid)) {
 915					if (!getFileBackend().isFileAvailable(message)) {
 916						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 917						updateConversationUi();
 918					}
 919					return;
 920						}
 921			}
 922		}
 923	}
 924
 925	public void populateWithOrderedConversations(final List<Conversation> list) {
 926		populateWithOrderedConversations(list, true);
 927	}
 928
 929	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 930		list.clear();
 931		if (includeConferences) {
 932			list.addAll(getConversations());
 933		} else {
 934			for (Conversation conversation : getConversations()) {
 935				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 936					list.add(conversation);
 937				}
 938			}
 939		}
 940		Collections.sort(list, new Comparator<Conversation>() {
 941			@Override
 942			public int compare(Conversation lhs, Conversation rhs) {
 943				Message left = lhs.getLatestMessage();
 944				Message right = rhs.getLatestMessage();
 945				if (left.getTimeSent() > right.getTimeSent()) {
 946					return -1;
 947				} else if (left.getTimeSent() < right.getTimeSent()) {
 948					return 1;
 949				} else {
 950					return 0;
 951				}
 952			}
 953		});
 954	}
 955
 956	public int loadMoreMessages(Conversation conversation, long timestamp) {
 957		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 958				timestamp);
 959		for (Message message : messages) {
 960			message.setConversation(conversation);
 961		}
 962		conversation.addAll(0, messages);
 963		return messages.size();
 964	}
 965
 966	public List<Account> getAccounts() {
 967		return this.accounts;
 968	}
 969
 970	public Conversation find(List<Conversation> haystack, Contact contact) {
 971		for (Conversation conversation : haystack) {
 972			if (conversation.getContact() == contact) {
 973				return conversation;
 974			}
 975		}
 976		return null;
 977	}
 978
 979	public Conversation find(final List<Conversation> haystack,
 980			final Account account,
 981			final Jid jid) {
 982		for (Conversation conversation : haystack) {
 983			if ((account == null || conversation.getAccount() == account)
 984					&& (conversation.getContactJid().toBareJid().equals(jid.toBareJid()))) {
 985				return conversation;
 986					}
 987		}
 988		return null;
 989	}
 990
 991	public Conversation findOrCreateConversation(final Account account, final Jid jid,
 992			final boolean muc) {
 993		synchronized (this.conversations) {
 994			Conversation conversation = find(account, jid);
 995			if (conversation != null) {
 996				return conversation;
 997			}
 998			conversation = databaseBackend.findConversation(account, jid);
 999			if (conversation != null) {
1000				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1001				conversation.setAccount(account);
1002				if (muc) {
1003					conversation.setMode(Conversation.MODE_MULTI);
1004				} else {
1005					conversation.setMode(Conversation.MODE_SINGLE);
1006				}
1007				conversation.addAll(0, databaseBackend.getMessages(conversation, 50));
1008				this.databaseBackend.updateConversation(conversation);
1009			} else {
1010				String conversationName;
1011				Contact contact = account.getRoster().getContact(jid);
1012				if (contact != null) {
1013					conversationName = contact.getDisplayName();
1014				} else {
1015					conversationName = jid.getLocalpart();
1016				}
1017				if (muc) {
1018					conversation = new Conversation(conversationName, account, jid,
1019							Conversation.MODE_MULTI);
1020				} else {
1021					conversation = new Conversation(conversationName, account, jid,
1022							Conversation.MODE_SINGLE);
1023				}
1024				this.databaseBackend.createConversation(conversation);
1025			}
1026			this.conversations.add(conversation);
1027			updateConversationUi();
1028			return conversation;
1029		}
1030	}
1031
1032	public void archiveConversation(Conversation conversation) {
1033		synchronized (this.conversations) {
1034			if (conversation.getMode() == Conversation.MODE_MULTI) {
1035				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1036					Bookmark bookmark = conversation.getBookmark();
1037					if (bookmark != null && bookmark.autojoin()) {
1038						bookmark.setAutojoin(false);
1039						pushBookmarks(bookmark.getAccount());
1040					}
1041				}
1042				leaveMuc(conversation);
1043			} else {
1044				conversation.endOtrIfNeeded();
1045			}
1046			this.databaseBackend.updateConversation(conversation);
1047			this.conversations.remove(conversation);
1048			updateConversationUi();
1049		}
1050	}
1051
1052	public void clearConversationHistory(Conversation conversation) {
1053		this.databaseBackend.deleteMessagesInConversation(conversation);
1054		conversation.getMessages().clear();
1055		updateConversationUi();
1056	}
1057
1058	public void createAccount(Account account) {
1059		account.initOtrEngine(this);
1060		databaseBackend.createAccount(account);
1061		this.accounts.add(account);
1062		this.reconnectAccount(account, false);
1063		updateAccountUi();
1064	}
1065
1066	public void updateAccount(Account account) {
1067		this.statusListener.onStatusChanged(account);
1068		databaseBackend.updateAccount(account);
1069		reconnectAccount(account, false);
1070		updateAccountUi();
1071		getNotificationService().updateErrorNotification();
1072	}
1073
1074	public void deleteAccount(Account account) {
1075		synchronized (this.conversations) {
1076			for (Conversation conversation : conversations) {
1077				if (conversation.getAccount() == account) {
1078					if (conversation.getMode() == Conversation.MODE_MULTI) {
1079						leaveMuc(conversation);
1080					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1081						conversation.endOtrIfNeeded();
1082					}
1083					conversations.remove(conversation);
1084				}
1085			}
1086			if (account.getXmppConnection() != null) {
1087				this.disconnect(account, true);
1088			}
1089			databaseBackend.deleteAccount(account);
1090			this.accounts.remove(account);
1091			updateAccountUi();
1092			getNotificationService().updateErrorNotification();
1093		}
1094	}
1095
1096	private void removeStaleListeners() {
1097		boolean removedListener = false;
1098		synchronized (this.convChangedListenerCount) {
1099			if (this.mOnConversationUpdate != null) {
1100				this.mOnConversationUpdate = null;
1101				this.convChangedListenerCount = 0;
1102				this.mNotificationService.setIsInForeground(false);
1103				removedListener = true;
1104			}
1105		}
1106		synchronized (this.accountChangedListenerCount) {
1107			if (this.mOnAccountUpdate != null) {
1108				this.mOnAccountUpdate = null;
1109				this.accountChangedListenerCount = 0;
1110				removedListener = true;
1111			}
1112		}
1113		synchronized (this.rosterChangedListenerCount) {
1114			if (this.mOnRosterUpdate != null) {
1115				this.mOnRosterUpdate = null;
1116				this.rosterChangedListenerCount = 0;
1117				removedListener = true;
1118			}
1119		}
1120		if (removedListener) {
1121			final String msg = "removed stale listeners";
1122			Log.d(Config.LOGTAG, msg);
1123			checkListeners();
1124			try {
1125				OutputStream os = openFileOutput("stacktrace.txt", MODE_PRIVATE);
1126				os.write(msg.getBytes());
1127				os.flush();
1128				os.close();
1129			} catch (final FileNotFoundException ignored) {
1130
1131			} catch (final IOException ignored) {
1132			}
1133		}
1134	}
1135
1136	public void setOnConversationListChangedListener(
1137			OnConversationUpdate listener) {
1138		/*if (!isScreenOn()) {
1139			Log.d(Config.LOGTAG,
1140			"ignoring setOnConversationListChangedListener");
1141			return;
1142			}*/
1143		synchronized (this.convChangedListenerCount) {
1144			if (checkListeners()) {
1145				switchToForeground();
1146			}
1147			this.mOnConversationUpdate = listener;
1148			this.mNotificationService.setIsInForeground(true);
1149			this.convChangedListenerCount++;
1150		}
1151			}
1152
1153	public void removeOnConversationListChangedListener() {
1154		synchronized (this.convChangedListenerCount) {
1155			this.convChangedListenerCount--;
1156			if (this.convChangedListenerCount <= 0) {
1157				this.convChangedListenerCount = 0;
1158				this.mOnConversationUpdate = null;
1159				this.mNotificationService.setIsInForeground(false);
1160				if (checkListeners()) {
1161					switchToBackground();
1162				}
1163			}
1164		}
1165	}
1166
1167	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1168		/*if (!isScreenOn()) {
1169			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1170			return;
1171			}*/
1172		synchronized (this.accountChangedListenerCount) {
1173			if (checkListeners()) {
1174				switchToForeground();
1175			}
1176			this.mOnAccountUpdate = listener;
1177			this.accountChangedListenerCount++;
1178		}
1179	}
1180
1181	public void removeOnAccountListChangedListener() {
1182		synchronized (this.accountChangedListenerCount) {
1183			this.accountChangedListenerCount--;
1184			if (this.accountChangedListenerCount <= 0) {
1185				this.mOnAccountUpdate = null;
1186				this.accountChangedListenerCount = 0;
1187				if (checkListeners()) {
1188					switchToBackground();
1189				}
1190			}
1191		}
1192	}
1193
1194	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1195		/*if (!isScreenOn()) {
1196			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1197			return;
1198			}*/
1199		synchronized (this.rosterChangedListenerCount) {
1200			if (checkListeners()) {
1201				switchToForeground();
1202			}
1203			this.mOnRosterUpdate = listener;
1204			this.rosterChangedListenerCount++;
1205		}
1206	}
1207
1208	public void removeOnRosterUpdateListener() {
1209		synchronized (this.rosterChangedListenerCount) {
1210			this.rosterChangedListenerCount--;
1211			if (this.rosterChangedListenerCount <= 0) {
1212				this.rosterChangedListenerCount = 0;
1213				this.mOnRosterUpdate = null;
1214				if (checkListeners()) {
1215					switchToBackground();
1216				}
1217			}
1218		}
1219	}
1220
1221	private boolean checkListeners() {
1222		return (this.mOnAccountUpdate == null
1223				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1224	}
1225
1226	private void switchToForeground() {
1227		for (Account account : getAccounts()) {
1228			if (account.getStatus() == Account.State.ONLINE) {
1229				XmppConnection connection = account.getXmppConnection();
1230				if (connection != null && connection.getFeatures().csi()) {
1231					connection.sendActive();
1232				}
1233			}
1234		}
1235		Log.d(Config.LOGTAG, "app switched into foreground");
1236	}
1237
1238	private void switchToBackground() {
1239		for (Account account : getAccounts()) {
1240			if (account.getStatus() == Account.State.ONLINE) {
1241				XmppConnection connection = account.getXmppConnection();
1242				if (connection != null && connection.getFeatures().csi()) {
1243					connection.sendInactive();
1244				}
1245			}
1246		}
1247		this.mNotificationService.setIsInForeground(false);
1248		Log.d(Config.LOGTAG, "app switched into background");
1249	}
1250
1251	private boolean isScreenOn() {
1252		PowerManager pm = (PowerManager) this
1253			.getSystemService(Context.POWER_SERVICE);
1254		return pm.isScreenOn();
1255	}
1256
1257	public void connectMultiModeConversations(Account account) {
1258		List<Conversation> conversations = getConversations();
1259		for (Conversation conversation : conversations) {
1260			if ((conversation.getMode() == Conversation.MODE_MULTI)
1261					&& (conversation.getAccount() == account)) {
1262				joinMuc(conversation);
1263					}
1264		}
1265	}
1266
1267	public void joinMuc(Conversation conversation) {
1268		Account account = conversation.getAccount();
1269		account.pendingConferenceJoins.remove(conversation);
1270		account.pendingConferenceLeaves.remove(conversation);
1271		if (account.getStatus() == Account.State.ONLINE) {
1272			Log.d(Config.LOGTAG,
1273					"joining conversation " + conversation.getContactJid());
1274			String nick = conversation.getMucOptions().getProposedNick();
1275			Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1276			PresencePacket packet = new PresencePacket();
1277			packet.setTo(joinJid);
1278			Element x = new Element("x");
1279			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1280			if (conversation.getMucOptions().getPassword() != null) {
1281				Element password = x.addChild("password");
1282				password.setContent(conversation.getMucOptions().getPassword());
1283			}
1284			String sig = account.getPgpSignature();
1285			if (sig != null) {
1286				packet.addChild("status").setContent("online");
1287				packet.addChild("x", "jabber:x:signed").setContent(sig);
1288			}
1289			if (conversation.getMessages().size() != 0) {
1290				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1291						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1292				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1293				Date date = new Date(conversation.getLatestMessage()
1294						.getTimeSent() + 1000);
1295				x.addChild("history").setAttribute("since",
1296						mDateFormat.format(date));
1297			}
1298			packet.addChild(x);
1299			sendPresencePacket(account, packet);
1300			if (!joinJid.equals(conversation.getContactJid())) {
1301				conversation.setContactJid(joinJid);
1302				databaseBackend.updateConversation(conversation);
1303			}
1304		} else {
1305			account.pendingConferenceJoins.add(conversation);
1306		}
1307	}
1308
1309	public void providePasswordForMuc(Conversation conversation, String password) {
1310		if (conversation.getMode() == Conversation.MODE_MULTI) {
1311			conversation.getMucOptions().setPassword(password);
1312			if (conversation.getBookmark() != null) {
1313				conversation.getBookmark().setAutojoin(true);
1314				pushBookmarks(conversation.getAccount());
1315			}
1316			databaseBackend.updateConversation(conversation);
1317			joinMuc(conversation);
1318		}
1319	}
1320
1321	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1322		final MucOptions options = conversation.getMucOptions();
1323		final Jid joinJid = options.createJoinJid(nick);
1324		if (options.online()) {
1325			Account account = conversation.getAccount();
1326			options.setOnRenameListener(new OnRenameListener() {
1327
1328				@Override
1329				public void onSuccess() {
1330					conversation.setContactJid(joinJid);
1331					databaseBackend.updateConversation(conversation);
1332					Bookmark bookmark = conversation.getBookmark();
1333					if (bookmark != null) {
1334						bookmark.setNick(nick);
1335						pushBookmarks(bookmark.getAccount());
1336					}
1337					callback.success(conversation);
1338				}
1339
1340				@Override
1341				public void onFailure() {
1342					callback.error(R.string.nick_in_use,conversation);
1343				}
1344			});
1345
1346			PresencePacket packet = new PresencePacket();
1347			packet.setTo(joinJid);
1348			packet.setFrom(conversation.getAccount().getJid());
1349
1350			String sig = account.getPgpSignature();
1351			if (sig != null) {
1352				packet.addChild("status").setContent("online");
1353				packet.addChild("x", "jabber:x:signed").setContent(sig);
1354			}
1355			sendPresencePacket(account, packet);
1356		} else {
1357			conversation.setContactJid(joinJid);
1358			databaseBackend.updateConversation(conversation);
1359			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1360				Bookmark bookmark = conversation.getBookmark();
1361				if (bookmark != null) {
1362					bookmark.setNick(nick);
1363					pushBookmarks(bookmark.getAccount());
1364				}
1365				joinMuc(conversation);
1366			}
1367		}
1368	}
1369
1370	public void leaveMuc(Conversation conversation) {
1371		Account account = conversation.getAccount();
1372		account.pendingConferenceJoins.remove(conversation);
1373		account.pendingConferenceLeaves.remove(conversation);
1374		if (account.getStatus() == Account.State.ONLINE) {
1375			PresencePacket packet = new PresencePacket();
1376			packet.setTo(conversation.getContactJid());
1377			packet.setFrom(conversation.getAccount().getJid());
1378			packet.setAttribute("type", "unavailable");
1379			sendPresencePacket(conversation.getAccount(), packet);
1380			conversation.getMucOptions().setOffline();
1381			conversation.deregisterWithBookmark();
1382			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1383					+ ": leaving muc " + conversation.getContactJid());
1384		} else {
1385			account.pendingConferenceLeaves.add(conversation);
1386		}
1387	}
1388
1389	private String findConferenceServer(final Account account) {
1390		String server;
1391		if (account.getXmppConnection() != null) {
1392			server = account.getXmppConnection().getMucServer();
1393			if (server != null) {
1394				return server;
1395			}
1396		}
1397		for(Account other : getAccounts()) {
1398			if (other != account && other.getXmppConnection() != null) {
1399				server = other.getXmppConnection().getMucServer();
1400				if (server != null) {
1401					return server;
1402				}
1403			}
1404		}
1405		return null;
1406	}
1407
1408	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1409		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1410		if (account.getStatus() == Account.State.ONLINE) {
1411			try {
1412				String server = findConferenceServer(account);
1413				if (server == null) {
1414					if (callback != null) {
1415						callback.error(R.string.no_conference_server_found,null);
1416					}
1417					return;
1418				}
1419				String name = new BigInteger(75,getRNG()).toString(32);
1420				Jid jid = Jid.fromParts(name,server,null);
1421				final Conversation conversation = findOrCreateConversation(account, jid, true);
1422				joinMuc(conversation);
1423				Bundle options = new Bundle();
1424				options.putString("muc#roomconfig_persistentroom", "1");
1425				options.putString("muc#roomconfig_membersonly", "1");
1426				options.putString("muc#roomconfig_publicroom", "0");
1427				options.putString("muc#roomconfig_whois", "anyone");
1428				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1429					@Override
1430					public void onPushSucceeded() {
1431						for(Jid invite : jids) {
1432							invite(conversation,invite);
1433						}
1434						if (callback != null) {
1435							callback.success(conversation);
1436						}
1437					}
1438
1439					@Override
1440					public void onPushFailed() {
1441						if (callback != null) {
1442							callback.error(R.string.conference_creation_failed, conversation);
1443						}
1444					}
1445				});
1446
1447			} catch (InvalidJidException e) {
1448				if (callback != null) {
1449					callback.error(R.string.conference_creation_failed, null);
1450				}
1451			}
1452		} else {
1453			if (callback != null) {
1454				callback.error(R.string.not_connected_try_again,null);
1455			}
1456		}
1457	}
1458
1459	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1460		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1461		request.setTo(conversation.getContactJid().toBareJid());
1462		request.query("http://jabber.org/protocol/muc#owner");
1463		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1464			@Override
1465			public void onIqPacketReceived(Account account, IqPacket packet) {
1466				if (packet.getType() != IqPacket.TYPE_ERROR) {
1467					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1468					for (Field field : data.getFields()) {
1469						if (options.containsKey(field.getName())) {
1470							field.setValue(options.getString(field.getName()));
1471						}
1472					}
1473					data.submit();
1474					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1475					set.setTo(conversation.getContactJid().toBareJid());
1476					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1477					sendIqPacket(account, set, new OnIqPacketReceived() {
1478						@Override
1479						public void onIqPacketReceived(Account account, IqPacket packet) {
1480							if (packet.getType() == IqPacket.TYPE_RESULT) {
1481								if (callback != null) {
1482									callback.onPushSucceeded();
1483								}
1484							} else {
1485								if (callback != null) {
1486									callback.onPushFailed();
1487								}
1488							}
1489						}
1490					});
1491				} else {
1492					if (callback != null) {
1493						callback.onPushFailed();
1494					}
1495				}
1496			}
1497		});
1498	}
1499
1500	public void disconnect(Account account, boolean force) {
1501		if ((account.getStatus() == Account.State.ONLINE)
1502				|| (account.getStatus() == Account.State.DISABLED)) {
1503			if (!force) {
1504				List<Conversation> conversations = getConversations();
1505				for (Conversation conversation : conversations) {
1506					if (conversation.getAccount() == account) {
1507						if (conversation.getMode() == Conversation.MODE_MULTI) {
1508							leaveMuc(conversation);
1509						} else {
1510							if (conversation.endOtrIfNeeded()) {
1511								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1512										+ ": ended otr session with "
1513										+ conversation.getContactJid());
1514							}
1515						}
1516					}
1517				}
1518			}
1519			account.getXmppConnection().disconnect(force);
1520				}
1521	}
1522
1523	@Override
1524	public IBinder onBind(Intent intent) {
1525		return mBinder;
1526	}
1527
1528	public void updateMessage(Message message) {
1529		databaseBackend.updateMessage(message);
1530		updateConversationUi();
1531	}
1532
1533	protected void syncDirtyContacts(Account account) {
1534		for (Contact contact : account.getRoster().getContacts()) {
1535			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1536				pushContactToServer(contact);
1537			}
1538			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1539				deleteContactOnServer(contact);
1540			}
1541		}
1542	}
1543
1544	public void createContact(Contact contact) {
1545		SharedPreferences sharedPref = getPreferences();
1546		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1547		if (autoGrant) {
1548			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1549			contact.setOption(Contact.Options.ASKING);
1550		}
1551		pushContactToServer(contact);
1552	}
1553
1554	public void onOtrSessionEstablished(Conversation conversation) {
1555		Account account = conversation.getAccount();
1556		List<Message> messages = conversation.getMessages();
1557		Session otrSession = conversation.getOtrSession();
1558		Log.d(Config.LOGTAG,
1559				account.getJid().toBareJid() + " otr session established with "
1560				+ conversation.getContactJid() + "/"
1561				+ otrSession.getSessionID().getUserID());
1562		for (Message msg : messages) {
1563			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1564					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1565				SessionID id = otrSession.getSessionID();
1566				try {
1567					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1568				} catch (InvalidJidException e) {
1569					break;
1570				}
1571				if (msg.getType() == Message.TYPE_TEXT) {
1572					MessagePacket outPacket = mMessageGenerator
1573						.generateOtrChat(msg, true);
1574					if (outPacket != null) {
1575						msg.setStatus(Message.STATUS_SEND);
1576						databaseBackend.updateMessage(msg);
1577						sendMessagePacket(account, outPacket);
1578					}
1579				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1580					mJingleConnectionManager.createNewConnection(msg);
1581				}
1582					}
1583		}
1584		updateConversationUi();
1585	}
1586
1587	public boolean renewSymmetricKey(Conversation conversation) {
1588		Account account = conversation.getAccount();
1589		byte[] symmetricKey = new byte[32];
1590		this.mRandom.nextBytes(symmetricKey);
1591		Session otrSession = conversation.getOtrSession();
1592		if (otrSession != null) {
1593			MessagePacket packet = new MessagePacket();
1594			packet.setType(MessagePacket.TYPE_CHAT);
1595			packet.setFrom(account.getJid());
1596			packet.addChild("private", "urn:xmpp:carbons:2");
1597			packet.addChild("no-copy", "urn:xmpp:hints");
1598			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1599					+ otrSession.getSessionID().getUserID());
1600			try {
1601				packet.setBody(otrSession
1602						.transformSending(CryptoHelper.FILETRANSFER
1603							+ CryptoHelper.bytesToHex(symmetricKey)));
1604				sendMessagePacket(account, packet);
1605				conversation.setSymmetricKey(symmetricKey);
1606				return true;
1607			} catch (OtrException e) {
1608				return false;
1609			}
1610		}
1611		return false;
1612	}
1613
1614	public void pushContactToServer(Contact contact) {
1615		contact.resetOption(Contact.Options.DIRTY_DELETE);
1616		contact.setOption(Contact.Options.DIRTY_PUSH);
1617		Account account = contact.getAccount();
1618		if (account.getStatus() == Account.State.ONLINE) {
1619			boolean ask = contact.getOption(Contact.Options.ASKING);
1620			boolean sendUpdates = contact
1621				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1622				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1623			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1624			iq.query("jabber:iq:roster").addChild(contact.asElement());
1625			account.getXmppConnection().sendIqPacket(iq, null);
1626			if (sendUpdates) {
1627				sendPresencePacket(account,
1628						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1629			}
1630			if (ask) {
1631				sendPresencePacket(account,
1632						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1633			}
1634		}
1635	}
1636
1637	public void publishAvatar(Account account, Uri image,
1638			final UiCallback<Avatar> callback) {
1639		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1640		final int size = Config.AVATAR_SIZE;
1641		final Avatar avatar = getFileBackend()
1642			.getPepAvatar(image, size, format);
1643		if (avatar != null) {
1644			avatar.height = size;
1645			avatar.width = size;
1646			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1647				avatar.type = "image/webp";
1648			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1649				avatar.type = "image/jpeg";
1650			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1651				avatar.type = "image/png";
1652			}
1653			if (!getFileBackend().save(avatar)) {
1654				callback.error(R.string.error_saving_avatar, avatar);
1655				return;
1656			}
1657			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1658			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1659
1660				@Override
1661				public void onIqPacketReceived(Account account, IqPacket result) {
1662					if (result.getType() == IqPacket.TYPE_RESULT) {
1663						IqPacket packet = XmppConnectionService.this.mIqGenerator
1664							.publishAvatarMetadata(avatar);
1665						sendIqPacket(account, packet, new OnIqPacketReceived() {
1666
1667							@Override
1668							public void onIqPacketReceived(Account account,
1669									IqPacket result) {
1670								if (result.getType() == IqPacket.TYPE_RESULT) {
1671									if (account.setAvatar(avatar.getFilename())) {
1672										databaseBackend.updateAccount(account);
1673									}
1674									callback.success(avatar);
1675								} else {
1676									callback.error(
1677											R.string.error_publish_avatar_server_reject,
1678											avatar);
1679								}
1680							}
1681						});
1682					} else {
1683						callback.error(
1684								R.string.error_publish_avatar_server_reject,
1685								avatar);
1686					}
1687				}
1688			});
1689		} else {
1690			callback.error(R.string.error_publish_avatar_converting, null);
1691		}
1692	}
1693
1694	public void fetchAvatar(Account account, Avatar avatar) {
1695		fetchAvatar(account, avatar, null);
1696	}
1697
1698	public void fetchAvatar(Account account, final Avatar avatar,
1699			final UiCallback<Avatar> callback) {
1700		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1701		sendIqPacket(account, packet, new OnIqPacketReceived() {
1702
1703			@Override
1704			public void onIqPacketReceived(Account account, IqPacket result) {
1705				final String ERROR = account.getJid().toBareJid()
1706					+ ": fetching avatar for " + avatar.owner + " failed ";
1707				if (result.getType() == IqPacket.TYPE_RESULT) {
1708					avatar.image = mIqParser.avatarData(result);
1709					if (avatar.image != null) {
1710						if (getFileBackend().save(avatar)) {
1711							if (account.getJid().toBareJid().equals(avatar.owner)) {
1712								if (account.setAvatar(avatar.getFilename())) {
1713									databaseBackend.updateAccount(account);
1714								}
1715								getAvatarService().clear(account);
1716								updateConversationUi();
1717								updateAccountUi();
1718							} else {
1719								Contact contact = account.getRoster()
1720									.getContact(avatar.owner);
1721								contact.setAvatar(avatar.getFilename());
1722								getAvatarService().clear(contact);
1723								updateConversationUi();
1724								updateRosterUi();
1725							}
1726							if (callback != null) {
1727								callback.success(avatar);
1728							}
1729							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1730									+ ": succesfully fetched avatar for "
1731									+ avatar.owner);
1732							return;
1733						}
1734					} else {
1735
1736						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1737					}
1738				} else {
1739					Element error = result.findChild("error");
1740					if (error == null) {
1741						Log.d(Config.LOGTAG, ERROR + "(server error)");
1742					} else {
1743						Log.d(Config.LOGTAG, ERROR + error.toString());
1744					}
1745				}
1746				if (callback != null) {
1747					callback.error(0, null);
1748				}
1749
1750			}
1751		});
1752	}
1753
1754	public void checkForAvatar(Account account,
1755			final UiCallback<Avatar> callback) {
1756		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1757		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1758
1759			@Override
1760			public void onIqPacketReceived(Account account, IqPacket packet) {
1761				if (packet.getType() == IqPacket.TYPE_RESULT) {
1762					Element pubsub = packet.findChild("pubsub",
1763							"http://jabber.org/protocol/pubsub");
1764					if (pubsub != null) {
1765						Element items = pubsub.findChild("items");
1766						if (items != null) {
1767							Avatar avatar = Avatar.parseMetadata(items);
1768							if (avatar != null) {
1769								avatar.owner = account.getJid().toBareJid();
1770								if (fileBackend.isAvatarCached(avatar)) {
1771									if (account.setAvatar(avatar.getFilename())) {
1772										databaseBackend.updateAccount(account);
1773									}
1774									getAvatarService().clear(account);
1775									callback.success(avatar);
1776								} else {
1777									fetchAvatar(account, avatar, callback);
1778								}
1779								return;
1780							}
1781						}
1782					}
1783				}
1784				callback.error(0, null);
1785			}
1786		});
1787	}
1788
1789	public void deleteContactOnServer(Contact contact) {
1790		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1791		contact.resetOption(Contact.Options.DIRTY_PUSH);
1792		contact.setOption(Contact.Options.DIRTY_DELETE);
1793		Account account = contact.getAccount();
1794		if (account.getStatus() == Account.State.ONLINE) {
1795			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1796			Element item = iq.query("jabber:iq:roster").addChild("item");
1797			item.setAttribute("jid", contact.getJid().toString());
1798			item.setAttribute("subscription", "remove");
1799			account.getXmppConnection().sendIqPacket(iq, null);
1800		}
1801	}
1802
1803	public void updateConversation(Conversation conversation) {
1804		this.databaseBackend.updateConversation(conversation);
1805	}
1806
1807	public void reconnectAccount(final Account account, final boolean force) {
1808		new Thread(new Runnable() {
1809
1810			@Override
1811			public void run() {
1812				if (account.getXmppConnection() != null) {
1813					disconnect(account, force);
1814				}
1815				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1816					if (account.getXmppConnection() == null) {
1817						account.setXmppConnection(createConnection(account));
1818					}
1819					Thread thread = new Thread(account.getXmppConnection());
1820					thread.start();
1821					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1822							false);
1823				} else {
1824					account.getRoster().clearPresences();
1825					account.setXmppConnection(null);
1826				}
1827			}
1828		}).start();
1829	}
1830
1831	public void invite(Conversation conversation, Jid contact) {
1832		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1833		sendMessagePacket(conversation.getAccount(), packet);
1834	}
1835
1836	public void resetSendingToWaiting(Account account) {
1837		for (Conversation conversation : getConversations()) {
1838			if (conversation.getAccount() == account) {
1839				for (Message message : conversation.getMessages()) {
1840					if (message.getType() != Message.TYPE_IMAGE
1841							&& message.getStatus() == Message.STATUS_UNSEND) {
1842						markMessage(message, Message.STATUS_WAITING);
1843							}
1844				}
1845			}
1846		}
1847	}
1848
1849	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1850			final int status) {
1851		if (uuid == null) {
1852			return false;
1853		} else {
1854			for (Conversation conversation : getConversations()) {
1855				if (conversation.getContactJid().equals(recipient)
1856						&& conversation.getAccount().equals(account)) {
1857					return markMessage(conversation, uuid, status);
1858						}
1859			}
1860			return false;
1861		}
1862	}
1863
1864	public boolean markMessage(Conversation conversation, String uuid,
1865			int status) {
1866		if (uuid == null) {
1867			return false;
1868		} else {
1869			for (Message message : conversation.getMessages()) {
1870				if (uuid.equals(message.getUuid())
1871						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1872							.equals(message.getRemoteMsgId()))) {
1873					markMessage(message, status);
1874					return true;
1875							}
1876			}
1877			return false;
1878		}
1879	}
1880
1881	public void markMessage(Message message, int status) {
1882		if (status == Message.STATUS_SEND_FAILED
1883				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1884					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1885			return;
1886					}
1887		message.setStatus(status);
1888		databaseBackend.updateMessage(message);
1889		updateConversationUi();
1890	}
1891
1892	public SharedPreferences getPreferences() {
1893		return PreferenceManager
1894			.getDefaultSharedPreferences(getApplicationContext());
1895	}
1896
1897	public boolean forceEncryption() {
1898		return getPreferences().getBoolean("force_encryption", false);
1899	}
1900
1901	public boolean confirmMessages() {
1902		return getPreferences().getBoolean("confirm_messages", true);
1903	}
1904
1905	public boolean saveEncryptedMessages() {
1906		return !getPreferences().getBoolean("dont_save_encrypted", false);
1907	}
1908
1909	public boolean indicateReceived() {
1910		return getPreferences().getBoolean("indicate_received", false);
1911	}
1912
1913	public void updateConversationUi() {
1914		if (mOnConversationUpdate != null) {
1915			mOnConversationUpdate.onConversationUpdate();
1916		}
1917	}
1918
1919	public void updateAccountUi() {
1920		if (mOnAccountUpdate != null) {
1921			mOnAccountUpdate.onAccountUpdate();
1922		}
1923	}
1924
1925	public void updateRosterUi() {
1926		if (mOnRosterUpdate != null) {
1927			mOnRosterUpdate.onRosterUpdate();
1928		}
1929	}
1930
1931	public Account findAccountByJid(final Jid accountJid) {
1932		for (Account account : this.accounts) {
1933			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1934				return account;
1935			}
1936		}
1937		return null;
1938	}
1939
1940	public Conversation findConversationByUuid(String uuid) {
1941		for (Conversation conversation : getConversations()) {
1942			if (conversation.getUuid().equals(uuid)) {
1943				return conversation;
1944			}
1945		}
1946		return null;
1947	}
1948
1949	public void markRead(Conversation conversation, boolean calledByUi) {
1950		mNotificationService.clear(conversation);
1951		final Message markable = conversation.getLatestMarkableMessage();
1952		conversation.markRead();
1953		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1954			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1955			Account account = conversation.getAccount();
1956			final Jid to = markable.getCounterpart();
1957			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1958			this.sendMessagePacket(conversation.getAccount(),packet);
1959		}
1960		if (!calledByUi) {
1961			updateConversationUi();
1962		}
1963	}
1964
1965	public void failWaitingOtrMessages(Conversation conversation) {
1966		for (Message message : conversation.getMessages()) {
1967			if (message.getEncryption() == Message.ENCRYPTION_OTR
1968					&& message.getStatus() == Message.STATUS_WAITING) {
1969				markMessage(message, Message.STATUS_SEND_FAILED);
1970					}
1971		}
1972	}
1973
1974	public SecureRandom getRNG() {
1975		return this.mRandom;
1976	}
1977
1978	public MemorizingTrustManager getMemorizingTrustManager() {
1979		return this.mMemorizingTrustManager;
1980	}
1981
1982	public PowerManager getPowerManager() {
1983		return this.pm;
1984	}
1985
1986	public LruCache<String, Bitmap> getBitmapCache() {
1987		return this.mBitmapCache;
1988	}
1989
1990	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1991		if (account.getStatus() == Account.State.ONLINE) {
1992			MessagePacket error = this.mMessageGenerator
1993				.generateNotAcceptable(packet);
1994			sendMessagePacket(account, error);
1995		}
1996	}
1997
1998	public void syncRosterToDisk(final Account account) {
1999		new Thread(new Runnable() {
2000
2001			@Override
2002			public void run() {
2003				databaseBackend.writeRoster(account.getRoster());
2004			}
2005		}).start();
2006
2007	}
2008
2009	public List<String> getKnownHosts() {
2010		List<String> hosts = new ArrayList<>();
2011		for (Account account : getAccounts()) {
2012			if (!hosts.contains(account.getServer().toString())) {
2013				hosts.add(account.getServer().toString());
2014			}
2015			for (Contact contact : account.getRoster().getContacts()) {
2016				if (contact.showInRoster()) {
2017					final String server = contact.getServer().toString();
2018					if (server != null && !hosts.contains(server)) {
2019						hosts.add(server);
2020					}
2021				}
2022			}
2023		}
2024		return hosts;
2025	}
2026
2027	public List<String> getKnownConferenceHosts() {
2028		ArrayList<String> mucServers = new ArrayList<>();
2029		for (Account account : accounts) {
2030			if (account.getXmppConnection() != null) {
2031				String server = account.getXmppConnection().getMucServer();
2032				if (server != null && !mucServers.contains(server)) {
2033					mucServers.add(server);
2034				}
2035			}
2036		}
2037		return mucServers;
2038	}
2039
2040	public void sendMessagePacket(Account account, MessagePacket packet) {
2041		XmppConnection connection = account.getXmppConnection();
2042		if (connection != null) {
2043			connection.sendMessagePacket(packet);
2044		}
2045	}
2046
2047	public void sendPresencePacket(Account account, PresencePacket packet) {
2048		XmppConnection connection = account.getXmppConnection();
2049		if (connection != null) {
2050			connection.sendPresencePacket(packet);
2051		}
2052	}
2053
2054	public void sendIqPacket(Account account, IqPacket packet,
2055			OnIqPacketReceived callback) {
2056		XmppConnection connection = account.getXmppConnection();
2057		if (connection != null) {
2058			connection.sendIqPacket(packet, callback);
2059		}
2060	}
2061
2062	public MessageGenerator getMessageGenerator() {
2063		return this.mMessageGenerator;
2064	}
2065
2066	public PresenceGenerator getPresenceGenerator() {
2067		return this.mPresenceGenerator;
2068	}
2069
2070	public IqGenerator getIqGenerator() {
2071		return this.mIqGenerator;
2072	}
2073
2074	public JingleConnectionManager getJingleConnectionManager() {
2075		return this.mJingleConnectionManager;
2076	}
2077
2078	public List<Contact> findContacts(Jid jid) {
2079		ArrayList<Contact> contacts = new ArrayList<>();
2080		for (Account account : getAccounts()) {
2081			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2082				Contact contact = account.getRoster().getContactFromRoster(jid);
2083				if (contact != null) {
2084					contacts.add(contact);
2085				}
2086			}
2087		}
2088		return contacts;
2089	}
2090
2091	public NotificationService getNotificationService() {
2092		return this.mNotificationService;
2093	}
2094
2095	public HttpConnectionManager getHttpConnectionManager() {
2096		return this.mHttpConnectionManager;
2097	}
2098
2099	public void resendFailedMessages(Message message) {
2100		List<Message> messages = new ArrayList<>();
2101		Message current = message;
2102		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2103			messages.add(current);
2104			if (current.mergeable(current.next())) {
2105				current = current.next();
2106			} else {
2107				break;
2108			}
2109		}
2110		for (Message msg : messages) {
2111			markMessage(msg, Message.STATUS_WAITING);
2112			this.resendMessage(msg);
2113		}
2114	}
2115
2116	public interface OnConversationUpdate {
2117		public void onConversationUpdate();
2118	}
2119
2120	public interface OnAccountUpdate {
2121		public void onAccountUpdate();
2122	}
2123
2124	public interface OnRosterUpdate {
2125		public void onRosterUpdate();
2126	}
2127
2128	private interface OnConferenceOptionsPushed {
2129		public void onPushSucceeded();
2130		public void onPushFailed();
2131	}
2132
2133	public class XmppConnectionBinder extends Binder {
2134		public XmppConnectionService getService() {
2135			return XmppConnectionService.this;
2136		}
2137	}
2138}