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