XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.security.SecureRandom;
   4import java.text.SimpleDateFormat;
   5import java.util.ArrayList;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.TimeZone;
  13import java.util.concurrent.CopyOnWriteArrayList;
  14
  15import org.openintents.openpgp.util.OpenPgpApi;
  16import org.openintents.openpgp.util.OpenPgpServiceConnection;
  17
  18import net.java.otr4j.OtrException;
  19import net.java.otr4j.session.Session;
  20import net.java.otr4j.session.SessionStatus;
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.entities.Account;
  23import eu.siacs.conversations.entities.Bookmark;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.generator.MessageGenerator;
  31import eu.siacs.conversations.generator.PresenceGenerator;
  32import eu.siacs.conversations.parser.IqParser;
  33import eu.siacs.conversations.parser.MessageParser;
  34import eu.siacs.conversations.parser.PresenceParser;
  35import eu.siacs.conversations.persistance.DatabaseBackend;
  36import eu.siacs.conversations.persistance.FileBackend;
  37import eu.siacs.conversations.ui.UiCallback;
  38import eu.siacs.conversations.utils.CryptoHelper;
  39import eu.siacs.conversations.utils.ExceptionHelper;
  40import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  41import eu.siacs.conversations.utils.PRNGFixes;
  42import eu.siacs.conversations.utils.PhoneHelper;
  43import eu.siacs.conversations.utils.UIHelper;
  44import eu.siacs.conversations.xml.Element;
  45import eu.siacs.conversations.xmpp.OnBindListener;
  46import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  47import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  48import eu.siacs.conversations.xmpp.OnStatusChanged;
  49import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  50import eu.siacs.conversations.xmpp.XmppConnection;
  51import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  52import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  53import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  54import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  55import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  56import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  57import android.annotation.SuppressLint;
  58import android.app.AlarmManager;
  59import android.app.PendingIntent;
  60import android.app.Service;
  61import android.content.Context;
  62import android.content.Intent;
  63import android.content.SharedPreferences;
  64import android.database.ContentObserver;
  65import android.net.ConnectivityManager;
  66import android.net.NetworkInfo;
  67import android.net.Uri;
  68import android.os.Binder;
  69import android.os.Bundle;
  70import android.os.IBinder;
  71import android.os.PowerManager;
  72import android.os.PowerManager.WakeLock;
  73import android.os.SystemClock;
  74import android.preference.PreferenceManager;
  75import android.provider.ContactsContract;
  76import android.util.Log;
  77
  78public class XmppConnectionService extends Service {
  79
  80	protected static final String LOGTAG = "xmppService";
  81	public DatabaseBackend databaseBackend;
  82	private FileBackend fileBackend;
  83
  84	public long startDate;
  85
  86	private static final int PING_MAX_INTERVAL = 300;
  87	private static final int PING_MIN_INTERVAL = 30;
  88	private static final int PING_TIMEOUT = 10;
  89	private static final int CONNECT_TIMEOUT = 90;
  90	public static final long CARBON_GRACE_PERIOD = 60000L;
  91
  92	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  93
  94	private MessageParser mMessageParser = new MessageParser(this);
  95	private PresenceParser mPresenceParser = new PresenceParser(this);
  96	private IqParser mIqParser = new IqParser(this);
  97	private MessageGenerator mMessageGenerator = new MessageGenerator();
  98	private PresenceGenerator mPresenceGenerator = new PresenceGenerator();
  99	
 100	private List<Account> accounts;
 101	private CopyOnWriteArrayList<Conversation> conversations = null;
 102	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 103			this);
 104
 105	private OnConversationUpdate mOnConversationUpdate = null;
 106	private int convChangedListenerCount = 0;
 107	private OnAccountUpdate mOnAccountUpdate = null;
 108	private OnRosterUpdate mOnRosterUpdate = null;
 109	private OnTLSExceptionReceived tlsException = null;
 110	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 111
 112		@Override
 113		public void onContactStatusChanged(Contact contact, boolean online) {
 114			Conversation conversation = find(getConversations(),contact);
 115			if (conversation != null) {
 116				conversation.endOtrIfNeeded();
 117				if (online && (contact.getPresences().size() == 1)) {
 118					sendUnsendMessages(conversation);
 119				}
 120			}
 121		}
 122	};
 123
 124	public void setOnTLSExceptionReceivedListener(
 125			OnTLSExceptionReceived listener) {
 126		tlsException = listener;
 127	}
 128
 129	private SecureRandom mRandom;
 130
 131	private ContentObserver contactObserver = new ContentObserver(null) {
 132		@Override
 133		public void onChange(boolean selfChange) {
 134			super.onChange(selfChange);
 135			Intent intent = new Intent(getApplicationContext(),
 136					XmppConnectionService.class);
 137			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 138			startService(intent);
 139		}
 140	};
 141
 142	private final IBinder mBinder = new XmppConnectionBinder();
 143	private OnStatusChanged statusListener = new OnStatusChanged() {
 144
 145		@Override
 146		public void onStatusChanged(Account account) {
 147			if (mOnAccountUpdate != null) {
 148				mOnAccountUpdate.onAccountUpdate();;
 149			}
 150			if (account.getStatus() == Account.STATUS_ONLINE) {
 151				for(Conversation conversation : account.pendingConferenceLeaves) {
 152					leaveMuc(conversation);
 153				}
 154				for(Conversation conversation : account.pendingConferenceJoins) {
 155					joinMuc(conversation);
 156				}
 157				mJingleConnectionManager.cancelInTransmission();
 158				List<Conversation> conversations = getConversations();
 159				for (int i = 0; i < conversations.size(); ++i) {
 160					if (conversations.get(i).getAccount() == account) {
 161						conversations.get(i).startOtrIfNeeded();
 162						sendUnsendMessages(conversations.get(i));
 163					}
 164				}
 165				syncDirtyContacts(account);
 166				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 167			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 168				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 169					int timeToReconnect = mRandom.nextInt(50) + 10;
 170					scheduleWakeupCall(timeToReconnect, false);
 171				}
 172
 173			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 174				databaseBackend.updateAccount(account);
 175				reconnectAccount(account, true);
 176			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 177					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 178				int next = account.getXmppConnection().getTimeToNextAttempt();
 179				Log.d(LOGTAG, account.getJid()
 180						+ ": error connecting account. try again in " + next
 181						+ "s for the "
 182						+ (account.getXmppConnection().getAttempt() + 1)
 183						+ " time");
 184				scheduleWakeupCall(next, false);
 185			}
 186			UIHelper.showErrorNotification(getApplicationContext(),
 187					getAccounts());
 188		}
 189	};
 190
 191	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 192
 193		@Override
 194		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 195			mJingleConnectionManager.deliverPacket(account, packet);
 196		}
 197	};
 198
 199	private OpenPgpServiceConnection pgpServiceConnection;
 200	private PgpEngine mPgpEngine = null;
 201	private Intent pingIntent;
 202	private PendingIntent pendingPingIntent = null;
 203	private WakeLock wakeLock;
 204	private PowerManager pm;
 205	private OnBindListener mOnBindListener = new OnBindListener() {
 206
 207			@Override
 208			public void onBind(final Account account) {
 209				account.getRoster().clearPresences();
 210				account.clearPresences(); // self presences
 211				account.pendingConferenceJoins.clear();
 212				account.pendingConferenceLeaves.clear();
 213				fetchRosterFromServer(account);
 214				fetchBookmarks(account);
 215				sendPresencePacket(account, mPresenceGenerator.sendPresence(account));
 216				connectMultiModeConversations(account);
 217				updateConversationUi();
 218			}
 219		};
 220
 221	public PgpEngine getPgpEngine() {
 222		if (pgpServiceConnection.isBound()) {
 223			if (this.mPgpEngine == null) {
 224				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 225						getApplicationContext(),
 226						pgpServiceConnection.getService()), this);
 227			}
 228			return mPgpEngine;
 229		} else {
 230			return null;
 231		}
 232
 233	}
 234
 235	public FileBackend getFileBackend() {
 236		return this.fileBackend;
 237	}
 238
 239	public Message attachImageToConversation(final Conversation conversation,
 240			final Uri uri, final UiCallback<Message> callback) {
 241		final Message message;
 242		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 243			message = new Message(conversation, "",
 244					Message.ENCRYPTION_DECRYPTED);
 245		} else {
 246			message = new Message(conversation, "",
 247					conversation.getNextEncryption());
 248		}
 249		message.setPresence(conversation.getNextPresence());
 250		message.setType(Message.TYPE_IMAGE);
 251		message.setStatus(Message.STATUS_OFFERED);
 252		new Thread(new Runnable() {
 253
 254			@Override
 255			public void run() {
 256				try {
 257					getFileBackend().copyImageToPrivateStorage(message, uri);
 258					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 259						getPgpEngine().encrypt(message, callback);
 260					} else {
 261						callback.success(message);
 262					}
 263				} catch (FileBackend.ImageCopyException e) {
 264					callback.error(e.getResId(), message);
 265				}
 266			}
 267		}).start();
 268		return message;
 269	}
 270
 271	public Conversation find(Bookmark bookmark) {
 272		return find(bookmark.getAccount(),bookmark.getJid());
 273	}
 274	
 275	public Conversation find(Account account, String jid) {
 276		return find(getConversations(),account,jid);
 277	}
 278
 279	public class XmppConnectionBinder extends Binder {
 280		public XmppConnectionService getService() {
 281			return XmppConnectionService.this;
 282		}
 283	}
 284
 285	@Override
 286	public int onStartCommand(Intent intent, int flags, int startId) {
 287		if ((intent != null)
 288				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 289			mergePhoneContactsWithRoster();
 290			return START_STICKY;
 291		} else if ((intent != null)
 292				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 293			logoutAndSave();
 294			return START_NOT_STICKY;
 295		}
 296		this.wakeLock.acquire();
 297		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 298				.getSystemService(Context.CONNECTIVITY_SERVICE);
 299		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 300		boolean isConnected = activeNetwork != null
 301				&& activeNetwork.isConnected();
 302
 303		for (Account account : accounts) {
 304			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 305				if (!isConnected) {
 306					account.setStatus(Account.STATUS_NO_INTERNET);
 307					if (statusListener != null) {
 308						statusListener.onStatusChanged(account);
 309					}
 310				} else {
 311					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 312						account.setStatus(Account.STATUS_OFFLINE);
 313						if (statusListener != null) {
 314							statusListener.onStatusChanged(account);
 315						}
 316					}
 317					if (account.getStatus() == Account.STATUS_ONLINE) {
 318						long lastReceived = account.getXmppConnection().lastPaketReceived;
 319						long lastSent = account.getXmppConnection().lastPingSent;
 320						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 321							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 322							this.reconnectAccount(account, true);
 323						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 324							account.getXmppConnection().sendPing();
 325							account.getXmppConnection().lastPingSent = SystemClock
 326									.elapsedRealtime();
 327							this.scheduleWakeupCall(2, false);
 328						}
 329					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 330						if (account.getXmppConnection() == null) {
 331							account.setXmppConnection(this
 332									.createConnection(account));
 333						}
 334						account.getXmppConnection().lastPingSent = SystemClock
 335								.elapsedRealtime();
 336						new Thread(account.getXmppConnection()).start();
 337					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 338							&& ((SystemClock.elapsedRealtime() - account
 339									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 340						Log.d(LOGTAG, account.getJid()
 341								+ ": time out during connect reconnecting");
 342						reconnectAccount(account, true);
 343					} else {
 344						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 345							reconnectAccount(account, true);
 346						}
 347					}
 348					// in any case. reschedule wakup call
 349					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 350				}
 351				if (mOnAccountUpdate != null) {
 352					mOnAccountUpdate.onAccountUpdate();
 353				}
 354			}
 355		}
 356		if (wakeLock.isHeld()) {
 357			try {
 358				wakeLock.release();
 359			} catch (RuntimeException re) {
 360			}
 361		}
 362		return START_STICKY;
 363	}
 364
 365	@SuppressLint("TrulyRandom")
 366	@Override
 367	public void onCreate() {
 368		ExceptionHelper.init(getApplicationContext());
 369		PRNGFixes.apply();
 370		this.mRandom = new SecureRandom();
 371		this.databaseBackend = DatabaseBackend
 372				.getInstance(getApplicationContext());
 373		this.fileBackend = new FileBackend(getApplicationContext());
 374		this.accounts = databaseBackend.getAccounts();
 375
 376		for (Account account : this.accounts) {
 377			this.databaseBackend.readRoster(account.getRoster());
 378		}
 379		this.mergePhoneContactsWithRoster();
 380		this.getConversations();
 381
 382		getContentResolver().registerContentObserver(
 383				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 384		this.pgpServiceConnection = new OpenPgpServiceConnection(
 385				getApplicationContext(), "org.sufficientlysecure.keychain");
 386		this.pgpServiceConnection.bindToService();
 387
 388		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 389		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 390				"XmppConnectionService");
 391	}
 392
 393	@Override
 394	public void onDestroy() {
 395		super.onDestroy();
 396		this.logoutAndSave();
 397	}
 398
 399	@Override
 400	public void onTaskRemoved(Intent rootIntent) {
 401		super.onTaskRemoved(rootIntent);
 402		this.logoutAndSave();
 403	}
 404
 405	private void logoutAndSave() {
 406		for (Account account : accounts) {
 407			databaseBackend.writeRoster(account.getRoster());
 408			if (account.getXmppConnection() != null) {
 409				disconnect(account, false);
 410			}
 411		}
 412		Context context = getApplicationContext();
 413		AlarmManager alarmManager = (AlarmManager) context
 414				.getSystemService(Context.ALARM_SERVICE);
 415		Intent intent = new Intent(context, EventReceiver.class);
 416		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 417		Log.d(LOGTAG, "good bye");
 418		stopSelf();
 419	}
 420
 421	protected void scheduleWakeupCall(int seconds, boolean ping) {
 422		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 423		Context context = getApplicationContext();
 424		AlarmManager alarmManager = (AlarmManager) context
 425				.getSystemService(Context.ALARM_SERVICE);
 426
 427		if (ping) {
 428			if (this.pingIntent == null) {
 429				this.pingIntent = new Intent(context, EventReceiver.class);
 430				this.pingIntent.setAction("ping");
 431				this.pingIntent.putExtra("time", timeToWake);
 432				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 433						this.pingIntent, 0);
 434				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 435						timeToWake, pendingPingIntent);
 436			} else {
 437				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 438				if (scheduledTime < SystemClock.elapsedRealtime()
 439						|| (scheduledTime > timeToWake)) {
 440					this.pingIntent.putExtra("time", timeToWake);
 441					alarmManager.cancel(this.pendingPingIntent);
 442					this.pendingPingIntent = PendingIntent.getBroadcast(
 443							context, 0, this.pingIntent, 0);
 444					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 445							timeToWake, pendingPingIntent);
 446				}
 447			}
 448		} else {
 449			Intent intent = new Intent(context, EventReceiver.class);
 450			intent.setAction("ping_check");
 451			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 452					intent, 0);
 453			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 454					alarmIntent);
 455		}
 456
 457	}
 458
 459	public XmppConnection createConnection(Account account) {
 460		SharedPreferences sharedPref = getPreferences();
 461		account.setResource(sharedPref.getString("resource", "mobile")
 462				.toLowerCase(Locale.getDefault()));
 463		XmppConnection connection = new XmppConnection(account, this);
 464		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 465		connection.setOnStatusChangedListener(this.statusListener);
 466		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 467		connection
 468				.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 469		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 470		connection
 471				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 472
 473					@Override
 474					public void onTLSExceptionReceived(String fingerprint,
 475							Account account) {
 476						Log.d(LOGTAG, "tls exception arrived in service");
 477						if (tlsException != null) {
 478							tlsException.onTLSExceptionReceived(fingerprint,
 479									account);
 480						}
 481					}
 482				});
 483		connection.setOnBindListener(this.mOnBindListener);
 484		return connection;
 485	}
 486
 487	synchronized public void sendMessage(Message message) {
 488		Account account = message.getConversation().getAccount();
 489		Conversation conv = message.getConversation();
 490		MessagePacket packet = null;
 491		boolean saveInDb = true;
 492		boolean send = false;
 493		if (account.getStatus() == Account.STATUS_ONLINE) {
 494			if (message.getType() == Message.TYPE_IMAGE) {
 495				if (message.getPresence() != null) {
 496					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 497						if (!conv.hasValidOtrSession()
 498								&& (message.getPresence() != null)) {
 499							conv.startOtrSession(getApplicationContext(),
 500									message.getPresence(), true);
 501							message.setStatus(Message.STATUS_WAITING);
 502						} else if (conv.hasValidOtrSession()
 503								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 504							mJingleConnectionManager
 505									.createNewConnection(message);
 506						} else if (message.getPresence() == null) {
 507							message.setStatus(Message.STATUS_WAITING);
 508						}
 509					} else {
 510						mJingleConnectionManager.createNewConnection(message);
 511					}
 512				} else {
 513					message.setStatus(Message.STATUS_WAITING);
 514				}
 515			} else {
 516				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 517					if (!conv.hasValidOtrSession()
 518							&& (message.getPresence() != null)) {
 519						conv.startOtrSession(getApplicationContext(),
 520								message.getPresence(), true);
 521						message.setStatus(Message.STATUS_WAITING);
 522					} else if (conv.hasValidOtrSession()
 523							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 524						message.setPresence(conv.getOtrSession().getSessionID()
 525								.getUserID());
 526						packet = mMessageGenerator.generateOtrChat(message);
 527						send = true;
 528						message.setStatus(Message.STATUS_SEND);
 529						
 530					} else if (message.getPresence() == null) {
 531						message.setStatus(Message.STATUS_WAITING);
 532					}
 533				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 534					message.getConversation().endOtrIfNeeded();
 535					packet = mMessageGenerator.generatePgpChat(message);
 536					message.setStatus(Message.STATUS_SEND);
 537					send = true;
 538				} else {
 539					message.getConversation().endOtrIfNeeded();
 540					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 541						message.setStatus(Message.STATUS_SEND);
 542					}
 543					packet = mMessageGenerator.generateChat(message);
 544					send = true;
 545				}
 546			}
 547		} else {
 548			message.setStatus(Message.STATUS_WAITING);
 549			if (message.getType() == Message.TYPE_TEXT) {
 550				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 551					String pgpBody = message.getEncryptedBody();
 552					String decryptedBody = message.getBody();
 553					message.setBody(pgpBody);
 554					databaseBackend.createMessage(message);
 555					saveInDb = false;
 556					message.setBody(decryptedBody);
 557				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 558					if (conv.hasValidOtrSession()) {
 559						message.setPresence(conv.getOtrSession().getSessionID()
 560								.getUserID());
 561					} else if (!conv.hasValidOtrSession()
 562							&& message.getPresence() != null) {
 563						conv.startOtrSession(getApplicationContext(),
 564								message.getPresence(), false);
 565					}
 566				}
 567			}
 568
 569		}
 570		if (saveInDb) {
 571			databaseBackend.createMessage(message);
 572		}
 573		conv.getMessages().add(message);
 574		updateConversationUi();
 575		if ((send) && (packet != null)) {
 576			sendMessagePacket(account, packet);
 577		}
 578
 579	}
 580
 581	private void sendUnsendMessages(Conversation conversation) {
 582		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 583			int status = conversation.getMessages().get(i).getStatus();
 584			if (status == Message.STATUS_WAITING) {
 585				resendMessage(conversation.getMessages().get(i));
 586			}
 587		}
 588	}
 589
 590	private void resendMessage(Message message) {
 591		Account account = message.getConversation().getAccount();
 592		MessagePacket packet = null;
 593		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 594			Presences presences = message.getConversation().getContact()
 595					.getPresences();
 596			if (!message.getConversation().hasValidOtrSession()) {
 597				if ((message.getPresence() != null)
 598						&& (presences.has(message.getPresence()))) {
 599					message.getConversation().startOtrSession(
 600							getApplicationContext(), message.getPresence(),
 601							true);
 602				} else {
 603					if (presences.size() == 1) {
 604						String presence = presences.asStringArray()[0];
 605						message.getConversation().startOtrSession(
 606								getApplicationContext(), presence, true);
 607					}
 608				}
 609			} else {
 610				if (message.getConversation().getOtrSession()
 611						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 612					if (message.getType() == Message.TYPE_TEXT) {
 613						packet = mMessageGenerator.generateOtrChat(message,
 614								true);
 615					} else if (message.getType() == Message.TYPE_IMAGE) {
 616						mJingleConnectionManager.createNewConnection(message);
 617					}
 618				}
 619			}
 620		} else if (message.getType() == Message.TYPE_TEXT) {
 621			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 622				packet = mMessageGenerator.generateChat(message, true);
 623			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 624					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 625				packet = mMessageGenerator.generatePgpChat(message, true);
 626			}
 627		} else if (message.getType() == Message.TYPE_IMAGE) {
 628			Presences presences = message.getConversation().getContact()
 629					.getPresences();
 630			if ((message.getPresence() != null)
 631					&& (presences.has(message.getPresence()))) {
 632				markMessage(message, Message.STATUS_OFFERED);
 633				mJingleConnectionManager.createNewConnection(message);
 634			} else {
 635				if (presences.size() == 1) {
 636					String presence = presences.asStringArray()[0];
 637					message.setPresence(presence);
 638					markMessage(message, Message.STATUS_OFFERED);
 639					mJingleConnectionManager.createNewConnection(message);
 640				}
 641			}
 642		}
 643		if (packet != null) {
 644			sendMessagePacket(account,packet);
 645			markMessage(message, Message.STATUS_SEND);
 646		}
 647	}
 648
 649	public void fetchRosterFromServer(Account account) {
 650		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 651		if (!"".equals(account.getRosterVersion())) {
 652			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 653					+ account.getRosterVersion());
 654		} else {
 655			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 656		}
 657		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 658				account.getRosterVersion());
 659		account.getXmppConnection().sendIqPacket(iqPacket,
 660				new OnIqPacketReceived() {
 661
 662					@Override
 663					public void onIqPacketReceived(final Account account,
 664							IqPacket packet) {
 665						Element query = packet.findChild("query");
 666						if (query != null) {
 667							account.getRoster().markAllAsNotInRoster();
 668							mIqParser.rosterItems(account, query);
 669						}
 670					}
 671				});
 672	}
 673	
 674	public void fetchBookmarks(Account account) {
 675		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 676		Element query = iqPacket.query("jabber:iq:private");
 677		query.addChild("storage", "storage:bookmarks");
 678		OnIqPacketReceived callback = new OnIqPacketReceived() {
 679			
 680			@Override
 681			public void onIqPacketReceived(Account account, IqPacket packet) {
 682				Element query = packet.query();
 683				List<Bookmark> bookmarks = new ArrayList<Bookmark>();
 684				Element storage = query.findChild("storage", "storage:bookmarks");
 685				if (storage!=null) {
 686					for(Element item : storage.getChildren()) {
 687						if (item.getName().equals("conference")) {
 688							Bookmark bookmark = Bookmark.parse(item,account);
 689							bookmarks.add(bookmark);
 690							Conversation conversation = find(bookmark);
 691							if (conversation!=null) {
 692								conversation.setBookmark(bookmark);
 693							} else {
 694								if (bookmark.autojoin()) {
 695									conversation = findOrCreateConversation(account, bookmark.getJid(), true);
 696									conversation.setBookmark(bookmark);
 697									joinMuc(conversation);
 698								}
 699							}
 700						}
 701					}
 702				}
 703				account.setBookmarks(bookmarks);
 704			}
 705		};
 706		sendIqPacket(account, iqPacket, callback);
 707		
 708	}
 709	
 710	public void pushBookmarks(Account account) {
 711		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 712		Element query = iqPacket.query("jabber:iq:private");
 713		Element storage = query.addChild("storage", "storage:bookmarks");
 714		for(Bookmark bookmark : account.getBookmarks()) {
 715			storage.addChild(bookmark.toElement());
 716		}
 717		sendIqPacket(account, iqPacket,null);
 718	}
 719
 720	private void mergePhoneContactsWithRoster() {
 721		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 722				new OnPhoneContactsLoadedListener() {
 723					@Override
 724					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 725						for (Account account : accounts) {
 726							account.getRoster().clearSystemAccounts();
 727						}
 728						for (Bundle phoneContact : phoneContacts) {
 729							for (Account account : accounts) {
 730								String jid = phoneContact.getString("jid");
 731								Contact contact = account.getRoster()
 732										.getContact(jid);
 733								String systemAccount = phoneContact
 734										.getInt("phoneid")
 735										+ "#"
 736										+ phoneContact.getString("lookup");
 737								contact.setSystemAccount(systemAccount);
 738								contact.setPhotoUri(phoneContact
 739										.getString("photouri"));
 740								contact.setSystemName(phoneContact
 741										.getString("displayname"));
 742							}
 743						}
 744					}
 745				});
 746	}
 747
 748	public List<Conversation> getConversations() {
 749		if (this.conversations == null) {
 750			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 751			for (Account account : this.accounts) {
 752				accountLookupTable.put(account.getUuid(), account);
 753			}
 754			this.conversations = databaseBackend
 755					.getConversations(Conversation.STATUS_AVAILABLE);
 756			for (Conversation conv : this.conversations) {
 757				Account account = accountLookupTable.get(conv.getAccountUuid());
 758				conv.setAccount(account);
 759				conv.setMessages(databaseBackend.getMessages(conv, 50));
 760			}
 761		}
 762		
 763		return this.conversations;
 764	}
 765	
 766	public void populateWithOrderedConversations(List<Conversation> list) {
 767		list.clear();
 768		list.addAll(getConversations());
 769		Collections.sort(list, new Comparator<Conversation>() {
 770			@Override
 771			public int compare(Conversation lhs, Conversation rhs) {
 772				Message left = lhs.getLatestMessage();
 773				Message right = rhs.getLatestMessage();
 774				if (left.getTimeSent() > right.getTimeSent()) {
 775					return -1;
 776				} else if (left.getTimeSent() < right.getTimeSent()) {
 777					return 1;
 778				} else {
 779					return 0;
 780				}
 781			}
 782		});
 783	}
 784
 785	public List<Message> getMoreMessages(Conversation conversation,
 786			long timestamp) {
 787		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 788				timestamp);
 789		for (Message message : messages) {
 790			message.setConversation(conversation);
 791		}
 792		return messages;
 793	}
 794
 795	public List<Account> getAccounts() {
 796		return this.accounts;
 797	}
 798
 799	public Conversation find(List<Conversation> haystack, Contact contact) {
 800		for (Conversation conversation : haystack) {
 801			if (conversation.getContact() == contact) {
 802				return conversation;
 803			}
 804		}
 805		return null;
 806	}
 807
 808	public Conversation find(List<Conversation> haystack, Account account, String jid) {
 809		for (Conversation conversation : haystack) {
 810			if ((conversation.getAccount().equals(account))
 811					&& (conversation.getContactJid().split("/")[0].equals(jid))) {
 812				return conversation;
 813			}
 814		}
 815		return null;
 816	}
 817	
 818	
 819	public Conversation findOrCreateConversation(Account account, String jid,
 820			boolean muc) {
 821		Conversation conversation = find(account, jid);
 822		if (conversation != null) {
 823			return conversation;
 824		}
 825		conversation = databaseBackend.findConversation(account,jid);
 826		if (conversation != null) {
 827			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 828			conversation.setAccount(account);
 829			if (muc) {
 830				conversation.setMode(Conversation.MODE_MULTI);
 831			} else {
 832				conversation.setMode(Conversation.MODE_SINGLE);
 833			}
 834			conversation.setMessages(databaseBackend.getMessages(conversation,
 835					50));
 836			this.databaseBackend.updateConversation(conversation);
 837		} else {
 838			String conversationName;
 839			Contact contact = account.getRoster().getContact(jid);
 840			if (contact != null) {
 841				conversationName = contact.getDisplayName();
 842			} else {
 843				conversationName = jid.split("@")[0];
 844			}
 845			if (muc) {
 846				conversation = new Conversation(conversationName, account, jid,
 847						Conversation.MODE_MULTI);
 848			} else {
 849				conversation = new Conversation(conversationName, account, jid,
 850						Conversation.MODE_SINGLE);
 851			}
 852			this.databaseBackend.createConversation(conversation);
 853		}
 854		this.conversations.add(conversation);
 855		updateConversationUi();
 856		return conversation;
 857	}
 858
 859	public void archiveConversation(Conversation conversation) {
 860		if (conversation.getMode() == Conversation.MODE_MULTI) {
 861			Bookmark bookmark = conversation.getBookmark();
 862			if (bookmark!=null && bookmark.autojoin()) {
 863				bookmark.setAutojoin(false);
 864				pushBookmarks(bookmark.getAccount());
 865			}
 866			leaveMuc(conversation);
 867		} else {
 868			conversation.endOtrIfNeeded();
 869		}
 870		this.databaseBackend.updateConversation(conversation);
 871		this.conversations.remove(conversation);
 872		updateConversationUi();
 873	}
 874
 875	public void clearConversationHistory(Conversation conversation) {
 876		this.databaseBackend.deleteMessagesInConversation(conversation);
 877		this.fileBackend.removeFiles(conversation);
 878		conversation.getMessages().clear();
 879		updateConversationUi();
 880	}
 881
 882	public int getConversationCount() {
 883		return this.databaseBackend.getConversationCount();
 884	}
 885
 886	public void createAccount(Account account) {
 887		databaseBackend.createAccount(account);
 888		this.accounts.add(account);
 889		this.reconnectAccount(account, false);
 890		updateAccountUi();
 891	}
 892
 893	public void updateAccount(Account account) {
 894		this.statusListener.onStatusChanged(account);
 895		databaseBackend.updateAccount(account);
 896		reconnectAccount(account, false);
 897		updateAccountUi();
 898		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 899	}
 900
 901	public void deleteAccount(Account account) {
 902		if (account.getXmppConnection() != null) {
 903			this.disconnect(account, true);
 904		}
 905		databaseBackend.deleteAccount(account);
 906		this.accounts.remove(account);
 907		updateAccountUi();
 908		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 909	}
 910
 911	public void setOnConversationListChangedListener(
 912			OnConversationUpdate listener) {
 913		this.mOnConversationUpdate = listener;
 914		this.convChangedListenerCount++;
 915	}
 916
 917	public void removeOnConversationListChangedListener() {
 918		this.convChangedListenerCount--;
 919		if (this.convChangedListenerCount == 0) {
 920			this.mOnConversationUpdate = null;
 921		}
 922	}
 923
 924	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
 925		this.mOnAccountUpdate = listener;
 926	}
 927
 928	public void removeOnAccountListChangedListener() {
 929		this.mOnAccountUpdate = null;
 930	}
 931	
 932	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
 933		this.mOnRosterUpdate = listener;
 934	}
 935
 936	public void removeOnRosterUpdateListener() {
 937		this.mOnRosterUpdate = null;
 938	}
 939
 940	public void connectMultiModeConversations(Account account) {
 941		List<Conversation> conversations = getConversations();
 942		for (int i = 0; i < conversations.size(); i++) {
 943			Conversation conversation = conversations.get(i);
 944			if ((conversation.getMode() == Conversation.MODE_MULTI)
 945					&& (conversation.getAccount() == account)) {
 946				joinMuc(conversation);
 947			}
 948		}
 949	}
 950
 951	public void joinMuc(Conversation conversation) {
 952		Account account = conversation.getAccount();
 953		account.pendingConferenceJoins.remove(conversation);
 954		account.pendingConferenceLeaves.remove(conversation);
 955		if (account.getStatus() == Account.STATUS_ONLINE) {
 956			Log.d(LOGTAG,"joining conversation "+conversation.getContactJid());
 957			String nick = conversation.getMucOptions().getProposedNick();
 958			conversation.getMucOptions().setJoinNick(nick);
 959			PresencePacket packet = new PresencePacket();
 960			packet.setAttribute("to",conversation.getMucOptions().getJoinJid());
 961			Element x = new Element("x");
 962			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
 963			String sig = account.getPgpSignature();
 964			if (sig != null) {
 965				packet.addChild("status").setContent("online");
 966				packet.addChild("x", "jabber:x:signed").setContent(sig);
 967			}
 968			if (conversation.getMessages().size() != 0) {
 969				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
 970						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
 971				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
 972				Date date = new Date(
 973						conversation.getLatestMessage().getTimeSent() + 1000);
 974				x.addChild("history").setAttribute("since",
 975						mDateFormat.format(date));
 976			}
 977			packet.addChild(x);
 978			sendPresencePacket(account, packet);
 979		} else {
 980			account.pendingConferenceJoins.add(conversation);
 981		}
 982	}
 983
 984	private OnRenameListener renameListener = null;
 985
 986	public void setOnRenameListener(OnRenameListener listener) {
 987		this.renameListener = listener;
 988	}
 989
 990	public void renameInMuc(final Conversation conversation, final String nick) {
 991		final MucOptions options = conversation.getMucOptions();
 992		options.setJoinNick(nick);
 993		if (options.online()) {
 994			Account account = conversation.getAccount();
 995			options.setOnRenameListener(new OnRenameListener() {
 996
 997				@Override
 998				public void onRename(boolean success) {
 999					if (renameListener != null) {
1000						renameListener.onRename(success);
1001					}
1002					if (success) {
1003						conversation.setContactJid(conversation.getMucOptions().getJoinJid());
1004						databaseBackend.updateConversation(conversation);
1005						Bookmark bookmark = conversation.getBookmark();
1006						if (bookmark!=null) {
1007							bookmark.setNick(nick);
1008							pushBookmarks(bookmark.getAccount());
1009						}
1010					}
1011				}
1012			});
1013			options.flagAboutToRename();
1014			PresencePacket packet = new PresencePacket();
1015			packet.setAttribute("to",options.getJoinJid());
1016			packet.setAttribute("from", conversation.getAccount().getFullJid());
1017
1018			String sig = account.getPgpSignature();
1019			if (sig != null) {
1020				packet.addChild("status").setContent("online");
1021				packet.addChild("x", "jabber:x:signed").setContent(sig);
1022			}
1023			sendPresencePacket(account,packet);
1024		} else {
1025			conversation.setContactJid(options.getJoinJid());
1026			databaseBackend.updateConversation(conversation);
1027			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1028				Bookmark bookmark = conversation.getBookmark();
1029				if (bookmark!=null) {
1030					bookmark.setNick(nick);
1031					pushBookmarks(bookmark.getAccount());
1032				}
1033				joinMuc(conversation);
1034			}
1035		}
1036	}
1037
1038	public void leaveMuc(Conversation conversation) {
1039		Account account = conversation.getAccount();
1040		account.pendingConferenceJoins.remove(conversation);
1041		account.pendingConferenceLeaves.remove(conversation);
1042		if (account.getStatus() == Account.STATUS_ONLINE) {
1043			PresencePacket packet = new PresencePacket();
1044			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1045			packet.setAttribute("from", conversation.getAccount().getFullJid());
1046			packet.setAttribute("type", "unavailable");
1047			sendPresencePacket(conversation.getAccount(),packet);
1048			conversation.getMucOptions().setOffline();
1049			conversation.deregisterWithBookmark();
1050			Log.d(LOGTAG,conversation.getAccount().getJid()+" leaving muc "+conversation.getContactJid());
1051		} else {
1052			account.pendingConferenceLeaves.add(conversation);
1053		}
1054	}
1055
1056	public void disconnect(Account account, boolean force) {
1057		if ((account.getStatus() == Account.STATUS_ONLINE)
1058				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1059			if (!force) {
1060				List<Conversation> conversations = getConversations();
1061				for (int i = 0; i < conversations.size(); i++) {
1062					Conversation conversation = conversations.get(i);
1063					if (conversation.getAccount() == account) {
1064						if (conversation.getMode() == Conversation.MODE_MULTI) {
1065							leaveMuc(conversation);
1066						} else {
1067							conversation.endOtrIfNeeded();
1068						}
1069					}
1070				}
1071			}
1072			account.getXmppConnection().disconnect(force);
1073		}
1074	}
1075
1076	@Override
1077	public IBinder onBind(Intent intent) {
1078		return mBinder;
1079	}
1080
1081	public void updateMessage(Message message) {
1082		databaseBackend.updateMessage(message);
1083	}
1084
1085	protected void syncDirtyContacts(Account account) {
1086		for (Contact contact : account.getRoster().getContacts()) {
1087			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1088				pushContactToServer(contact);
1089			}
1090			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1091				Log.d(LOGTAG, "dirty delete");
1092				deleteContactOnServer(contact);
1093			}
1094		}
1095	}
1096
1097	public void createContact(Contact contact) {
1098		SharedPreferences sharedPref = getPreferences();
1099		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1100		if (autoGrant) {
1101			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1102			contact.setOption(Contact.Options.ASKING);
1103		}
1104		pushContactToServer(contact);
1105	}
1106
1107	public void onOtrSessionEstablished(Conversation conversation) {
1108		Account account = conversation.getAccount();
1109		List<Message> messages = conversation.getMessages();
1110		Session otrSession = conversation.getOtrSession();
1111		Log.d(LOGTAG, account.getJid() + " otr session established with "
1112				+ conversation.getContactJid() + "/"
1113				+ otrSession.getSessionID().getUserID());
1114		for (int i = 0; i < messages.size(); ++i) {
1115			Message msg = messages.get(i);
1116			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1117					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1118				msg.setPresence(otrSession.getSessionID().getUserID());
1119				if (msg.getType() == Message.TYPE_TEXT) {
1120					MessagePacket outPacket = mMessageGenerator
1121							.generateOtrChat(msg, true);
1122					if (outPacket != null) {
1123						msg.setStatus(Message.STATUS_SEND);
1124						databaseBackend.updateMessage(msg);
1125						sendMessagePacket(account,outPacket);
1126					}
1127				} else if (msg.getType() == Message.TYPE_IMAGE) {
1128					mJingleConnectionManager.createNewConnection(msg);
1129				}
1130			}
1131		}
1132		notifyUi(conversation, false);
1133	}
1134
1135	public boolean renewSymmetricKey(Conversation conversation) {
1136		Account account = conversation.getAccount();
1137		byte[] symmetricKey = new byte[32];
1138		this.mRandom.nextBytes(symmetricKey);
1139		Session otrSession = conversation.getOtrSession();
1140		if (otrSession != null) {
1141			MessagePacket packet = new MessagePacket();
1142			packet.setType(MessagePacket.TYPE_CHAT);
1143			packet.setFrom(account.getFullJid());
1144			packet.addChild("private", "urn:xmpp:carbons:2");
1145			packet.addChild("no-copy", "urn:xmpp:hints");
1146			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1147					+ otrSession.getSessionID().getUserID());
1148			try {
1149				packet.setBody(otrSession
1150						.transformSending(CryptoHelper.FILETRANSFER
1151								+ CryptoHelper.bytesToHex(symmetricKey)));
1152				sendMessagePacket(account,packet);
1153				conversation.setSymmetricKey(symmetricKey);
1154				return true;
1155			} catch (OtrException e) {
1156				return false;
1157			}
1158		}
1159		return false;
1160	}
1161
1162	public void pushContactToServer(Contact contact) {
1163		contact.resetOption(Contact.Options.DIRTY_DELETE);
1164		contact.setOption(Contact.Options.DIRTY_PUSH);
1165		Account account = contact.getAccount();
1166		if (account.getStatus() == Account.STATUS_ONLINE) {
1167			boolean ask = contact.getOption(Contact.Options.ASKING);
1168			boolean sendUpdates = contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1169					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1170			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1171			iq.query("jabber:iq:roster").addChild(contact.asElement());
1172			account.getXmppConnection().sendIqPacket(iq, null);
1173			if (sendUpdates) {
1174				sendPresencePacket(account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
1175			}
1176			if (ask) {
1177				sendPresencePacket(account, mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1178			}
1179		}
1180	}
1181
1182	public void deleteContactOnServer(Contact contact) {
1183		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1184		contact.resetOption(Contact.Options.DIRTY_PUSH);
1185		contact.setOption(Contact.Options.DIRTY_DELETE);
1186		Account account = contact.getAccount();
1187		if (account.getStatus() == Account.STATUS_ONLINE) {
1188			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1189			Element item = iq.query("jabber:iq:roster").addChild("item");
1190			item.setAttribute("jid", contact.getJid());
1191			item.setAttribute("subscription", "remove");
1192			account.getXmppConnection().sendIqPacket(iq, null);
1193		}
1194	}
1195
1196	public void updateConversation(Conversation conversation) {
1197		this.databaseBackend.updateConversation(conversation);
1198	}
1199
1200	public void removeOnTLSExceptionReceivedListener() {
1201		this.tlsException = null;
1202	}
1203
1204	public void reconnectAccount(final Account account, final boolean force) {
1205		new Thread(new Runnable() {
1206
1207			@Override
1208			public void run() {
1209				if (account.getXmppConnection() != null) {
1210					disconnect(account, force);
1211				}
1212				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1213					if (account.getXmppConnection() == null) {
1214						account.setXmppConnection(createConnection(account));
1215					}
1216					Thread thread = new Thread(account.getXmppConnection());
1217					thread.start();
1218					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1219				}
1220			}
1221		}).start();
1222	}
1223
1224	public void inviteToConference(Conversation conversation, String contactJid) {
1225		Account account = conversation.getAccount();
1226		MessagePacket packet = new MessagePacket();
1227		packet.setTo(conversation.getContactJid().split("/")[0]);
1228		packet.setFrom(account.getFullJid());
1229		Element x = new Element("x");
1230		x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1231		Element invite = new Element("invite");
1232		invite.setAttribute("to", contactJid);
1233		x.addChild(invite);
1234		packet.addChild(x);
1235		sendMessagePacket(account,packet);
1236		Log.d(LOGTAG,packet.toString());
1237	}
1238
1239	public boolean markMessage(Account account, String recipient, String uuid,
1240			int status) {
1241		for (Conversation conversation : getConversations()) {
1242			if (conversation.getContactJid().equals(recipient)
1243					&& conversation.getAccount().equals(account)) {
1244				return markMessage(conversation, uuid, status);
1245			}
1246		}
1247		return false;
1248	}
1249
1250	public boolean markMessage(Conversation conversation, String uuid,
1251			int status) {
1252		for (Message message : conversation.getMessages()) {
1253			if (message.getUuid().equals(uuid)) {
1254				markMessage(message, status);
1255				return true;
1256			}
1257		}
1258		return false;
1259	}
1260
1261	public void markMessage(Message message, int status) {
1262		message.setStatus(status);
1263		databaseBackend.updateMessage(message);
1264		updateConversationUi();
1265	}
1266
1267	public SharedPreferences getPreferences() {
1268		return PreferenceManager
1269				.getDefaultSharedPreferences(getApplicationContext());
1270	}
1271
1272	public boolean confirmMessages() {
1273		return getPreferences().getBoolean("confirm_messages", true);
1274	}
1275
1276	public void notifyUi(Conversation conversation, boolean notify) {
1277		if (mOnConversationUpdate != null) {
1278			mOnConversationUpdate.onConversationUpdate();
1279		} else {
1280			UIHelper.updateNotification(getApplicationContext(),
1281					getConversations(), conversation, notify);
1282		}
1283	}
1284	
1285	public void updateConversationUi() {
1286		if (mOnConversationUpdate != null) {
1287			mOnConversationUpdate.onConversationUpdate();
1288		}
1289	}
1290	
1291	public void updateAccountUi() {
1292		if (mOnAccountUpdate != null) {
1293			mOnAccountUpdate.onAccountUpdate();
1294		}
1295	}
1296	
1297	public void updateRosterUi() {
1298		if (mOnRosterUpdate != null) {
1299			mOnRosterUpdate.onRosterUpdate();
1300		}
1301	}
1302
1303	public Account findAccountByJid(String accountJid) {
1304		for (Account account : this.accounts) {
1305			if (account.getJid().equals(accountJid)) {
1306				return account;
1307			}
1308		}
1309		return null;
1310	}
1311	
1312	public Conversation findConversationByUuid(String uuid) {
1313		for (Conversation conversation : getConversations()) {
1314			if (conversation.getUuid().equals(uuid)) {
1315				return conversation;
1316			}
1317		}
1318		return null;
1319	}
1320
1321	public void markRead(Conversation conversation) {
1322		conversation.markRead();
1323		String id = conversation.popLatestMarkableMessageId();
1324		if (confirmMessages() && id != null) {
1325			Account account = conversation.getAccount();
1326			String to = conversation.getContactJid();
1327			this.sendMessagePacket(conversation.getAccount(), mMessageGenerator.confirm(account, to, id));
1328		}
1329	}
1330
1331	public SecureRandom getRNG() {
1332		return this.mRandom;
1333	}
1334
1335	public PowerManager getPowerManager() {
1336		return this.pm;
1337	}
1338
1339	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1340		if (account.getStatus() == Account.STATUS_ONLINE) {
1341			MessagePacket error = this.mMessageGenerator
1342					.generateNotAcceptable(packet);
1343			sendMessagePacket(account,error);
1344		}
1345	}
1346
1347	public void syncRosterToDisk(final Account account) {
1348		new Thread(new Runnable() {
1349
1350			@Override
1351			public void run() {
1352				databaseBackend.writeRoster(account.getRoster());
1353			}
1354		}).start();
1355
1356	}
1357
1358	public List<String> getKnownHosts() {
1359		List<String> hosts = new ArrayList<String>();
1360		for (Account account : getAccounts()) {
1361			if (!hosts.contains(account.getServer())) {
1362				hosts.add(account.getServer());
1363			}
1364			for (Contact contact : account.getRoster().getContacts()) {
1365				if (contact.showInRoster()) {
1366					String server = contact.getServer();
1367					if (server != null && !hosts.contains(server)) {
1368						hosts.add(server);
1369					}
1370				}
1371			}
1372		}
1373		return hosts;
1374	}
1375
1376	public List<String> getKnownConferenceHosts() {
1377		ArrayList<String> mucServers = new ArrayList<String>();
1378		for (Account account : accounts) {
1379			if (account.getXmppConnection() != null) {
1380				String server = account.getXmppConnection().getMucServer();
1381				if (server != null) {
1382					mucServers.add(server);
1383				}
1384			}
1385		}
1386		return mucServers;
1387	}
1388	
1389	public void sendMessagePacket(Account account, MessagePacket packet) {
1390		account.getXmppConnection().sendMessagePacket(packet);
1391	}
1392	
1393	public void sendPresencePacket(Account account, PresencePacket packet) {
1394		account.getXmppConnection().sendPresencePacket(packet);
1395	}
1396	
1397	public void sendIqPacket(Account account, IqPacket packet, OnIqPacketReceived callback) {
1398		account.getXmppConnection().sendIqPacket(packet, callback);
1399	}
1400	
1401	public MessageGenerator getMessageGenerator() {
1402		return this.mMessageGenerator;
1403	}
1404	
1405	public PresenceGenerator getPresenceGenerator() {
1406		return this.mPresenceGenerator;
1407	}
1408	
1409	public JingleConnectionManager getJingleConnectionManager() {
1410		return this.mJingleConnectionManager;
1411	}
1412	
1413	public interface OnConversationUpdate {
1414		public void onConversationUpdate();
1415	}
1416	
1417	public interface OnAccountUpdate {
1418		public void onAccountUpdate();
1419	}
1420	
1421	public interface OnRosterUpdate {
1422		public void onRosterUpdate();
1423	}
1424}