XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.text.ParseException;
   4import java.text.SimpleDateFormat;
   5import java.util.Collections;
   6import java.util.Comparator;
   7import java.util.Date;
   8import java.util.Hashtable;
   9import java.util.List;
  10import java.util.Locale;
  11import java.util.Random;
  12
  13import org.openintents.openpgp.util.OpenPgpApi;
  14import org.openintents.openpgp.util.OpenPgpServiceConnection;
  15
  16import net.java.otr4j.OtrException;
  17import net.java.otr4j.session.Session;
  18import net.java.otr4j.session.SessionStatus;
  19
  20import eu.siacs.conversations.crypto.PgpEngine;
  21import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  22import eu.siacs.conversations.entities.Account;
  23import eu.siacs.conversations.entities.Contact;
  24import eu.siacs.conversations.entities.Conversation;
  25import eu.siacs.conversations.entities.Message;
  26import eu.siacs.conversations.entities.MucOptions;
  27import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  28import eu.siacs.conversations.entities.Presences;
  29import eu.siacs.conversations.persistance.DatabaseBackend;
  30import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  31import eu.siacs.conversations.ui.OnAccountListChangedListener;
  32import eu.siacs.conversations.ui.OnConversationListChangedListener;
  33import eu.siacs.conversations.ui.OnRosterFetchedListener;
  34import eu.siacs.conversations.utils.ExceptionHelper;
  35import eu.siacs.conversations.utils.MessageParser;
  36import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  37import eu.siacs.conversations.utils.PhoneHelper;
  38import eu.siacs.conversations.utils.UIHelper;
  39import eu.siacs.conversations.xml.Element;
  40import eu.siacs.conversations.xmpp.OnBindListener;
  41import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  42import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  43import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  44import eu.siacs.conversations.xmpp.OnStatusChanged;
  45import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  46import eu.siacs.conversations.xmpp.XmppConnection;
  47import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  48import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  49import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  50import android.app.AlarmManager;
  51import android.app.PendingIntent;
  52import android.app.Service;
  53import android.content.Context;
  54import android.content.Intent;
  55import android.content.SharedPreferences;
  56import android.database.ContentObserver;
  57import android.database.DatabaseUtils;
  58import android.net.ConnectivityManager;
  59import android.net.NetworkInfo;
  60import android.os.Binder;
  61import android.os.Bundle;
  62import android.os.IBinder;
  63import android.os.PowerManager;
  64import android.os.SystemClock;
  65import android.preference.PreferenceManager;
  66import android.provider.ContactsContract;
  67import android.util.Log;
  68
  69public class XmppConnectionService extends Service {
  70
  71	protected static final String LOGTAG = "xmppService";
  72	public DatabaseBackend databaseBackend;
  73
  74	public long startDate;
  75
  76	private static final int PING_MAX_INTERVAL = 300;
  77	private static final int PING_MIN_INTERVAL = 10;
  78	private static final int PING_TIMEOUT = 5;
  79	private static final int CONNECT_TIMEOUT = 60;
  80
  81	private List<Account> accounts;
  82	private List<Conversation> conversations = null;
  83
  84	public OnConversationListChangedListener convChangedListener = null;
  85	private OnAccountListChangedListener accountChangedListener = null;
  86	private OnTLSExceptionReceived tlsException = null;
  87
  88	public void setOnTLSExceptionReceivedListener(
  89			OnTLSExceptionReceived listener) {
  90		tlsException = listener;
  91	}
  92
  93	private Random mRandom = new Random(System.currentTimeMillis());
  94
  95	private ContentObserver contactObserver = new ContentObserver(null) {
  96		@Override
  97		public void onChange(boolean selfChange) {
  98			super.onChange(selfChange);
  99			Log.d(LOGTAG, "contact list has changed");
 100			mergePhoneContactsWithRoster(null);
 101		}
 102	};
 103
 104	private XmppConnectionService service = this;
 105
 106	private final IBinder mBinder = new XmppConnectionBinder();
 107	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 108
 109		@Override
 110		public void onMessagePacketReceived(Account account,
 111				MessagePacket packet) {
 112			Message message = null;
 113			boolean notify = true;
 114			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 115				String pgpBody = MessageParser.getPgpBody(packet);
 116				if (pgpBody != null) {
 117					message = MessageParser.parsePgpChat(pgpBody, packet,
 118							account, service);
 119					message.markUnread();
 120				} else if (packet.hasChild("body")
 121						&& (packet.getBody().startsWith("?OTR"))) {
 122					message = MessageParser.parseOtrChat(packet, account,
 123							service);
 124					if (message != null) {
 125						message.markUnread();
 126					}
 127				} else if (packet.hasChild("body")) {
 128					message = MessageParser.parsePlainTextChat(packet, account,
 129							service);
 130					message.markUnread();
 131				} else if (packet.hasChild("received")
 132						|| (packet.hasChild("sent"))) {
 133					message = MessageParser.parseCarbonMessage(packet, account,
 134							service);
 135					if (message != null) {
 136						message.getConversation().markRead();
 137					}
 138					notify = false;
 139				}
 140
 141			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 142				message = MessageParser
 143						.parseGroupchat(packet, account, service);
 144				if (message != null) {
 145					if (message.getStatus() == Message.STATUS_RECIEVED) {
 146						message.markUnread();
 147					} else {
 148						message.getConversation().markRead();
 149						notify = false;
 150					}
 151				}
 152			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 153				message = MessageParser.parseError(packet, account, service);
 154			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 155				if (packet.hasChild("x")) {
 156					Element x = packet.findChild("x");
 157					if (x.hasChild("invite")) {
 158						findOrCreateConversation(account, packet.getFrom(),
 159								true);
 160						if (convChangedListener != null) {
 161							convChangedListener.onConversationListChanged();
 162						}
 163						Log.d(LOGTAG,
 164								"invitation received to " + packet.getFrom());
 165					}
 166
 167				} else {
 168					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 169				}
 170			}
 171			if ((message == null) || (message.getBody() == null)) {
 172				return;
 173			}
 174			if (packet.hasChild("delay")) {
 175				try {
 176					String stamp = packet.findChild("delay").getAttribute(
 177							"stamp");
 178					stamp = stamp.replace("Z", "+0000");
 179					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 180							.parse(stamp);
 181					message.setTime(date.getTime());
 182				} catch (ParseException e) {
 183					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 184				}
 185			}
 186			Conversation conversation = message.getConversation();
 187			conversation.getMessages().add(message);
 188			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 189				databaseBackend.createMessage(message);
 190			}
 191			if (convChangedListener != null) {
 192				convChangedListener.onConversationListChanged();
 193			} else {
 194				UIHelper.updateNotification(getApplicationContext(),
 195						getConversations(), message.getConversation(), notify);
 196			}
 197		}
 198	};
 199	private OnStatusChanged statusListener = new OnStatusChanged() {
 200
 201		@Override
 202		public void onStatusChanged(Account account) {
 203			if (accountChangedListener != null) {
 204				accountChangedListener.onAccountListChangedListener();
 205			}
 206			if (account.getStatus() == Account.STATUS_ONLINE) {
 207				List<Conversation> conversations = getConversations();
 208				for (int i = 0; i < conversations.size(); ++i) {
 209					if (conversations.get(i).getAccount() == account) {
 210						sendUnsendMessages(conversations.get(i));
 211					}
 212				}
 213				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 214			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 215				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 216					int timeToReconnect = mRandom.nextInt(50) + 10;
 217					scheduleWakeupCall(timeToReconnect, false);
 218				}
 219
 220			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 221				databaseBackend.updateAccount(account);
 222				reconnectAccount(account, true);
 223			}
 224		}
 225	};
 226
 227	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 228
 229		@Override
 230		public void onPresencePacketReceived(Account account,
 231				PresencePacket packet) {
 232			if (packet.hasChild("x")
 233					&& (packet.findChild("x").getAttribute("xmlns")
 234							.startsWith("http://jabber.org/protocol/muc"))) {
 235				Conversation muc = findMuc(
 236						packet.getAttribute("from").split("/")[0], account);
 237				if (muc != null) {
 238					int error = muc.getMucOptions().getError();
 239					muc.getMucOptions().processPacket(packet);
 240					if ((muc.getMucOptions().getError() != error)
 241							&& (convChangedListener != null)) {
 242						Log.d(LOGTAG, "muc error status changed");
 243						convChangedListener.onConversationListChanged();
 244					}
 245				}
 246			} else {
 247				String[] fromParts = packet.getAttribute("from").split("/");
 248				String type = packet.getAttribute("type");
 249				if (fromParts[0].equals(account.getJid())) {
 250					if (fromParts.length==2) {
 251						if (type == null) {
 252							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 253						} else if (type.equals("unavailable")) {
 254							account.removePresence(fromParts[1]);
 255						}
 256					}
 257						
 258				} else {
 259					Contact contact = findContact(account, fromParts[0]);
 260					if (contact == null) {
 261						// most likely roster not synced
 262						return;
 263					}
 264					if (type == null) {
 265						if (fromParts.length == 2) {
 266							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 267							PgpEngine pgp = getPgpEngine();
 268							if (pgp != null) {
 269								Element x = packet.findChild("x");
 270								if ((x != null)
 271										&& (x.getAttribute("xmlns")
 272												.equals("jabber:x:signed"))) {
 273									try {
 274										contact.setPgpKeyId(pgp.fetchKeyId(
 275												packet.findChild("status")
 276														.getContent(), x
 277														.getContent()));
 278									} catch (OpenPgpException e) {
 279										Log.d(LOGTAG, "faulty pgp. just ignore");
 280									}
 281								}
 282							}
 283							databaseBackend.updateContact(contact);
 284						} else {
 285							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 286						}
 287					} else if (type.equals("unavailable")) {
 288						if (fromParts.length != 2) {
 289							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 290						} else {
 291							contact.removePresence(fromParts[1]);
 292							databaseBackend.updateContact(contact);
 293						}
 294					} else if (type.equals("subscribe")) {
 295						if (contact
 296								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 297							sendPresenceUpdatesTo(contact);
 298							contact.setSubscriptionOption(Contact.Subscription.FROM);
 299							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 300							replaceContactInConversation(contact.getJid(),
 301									contact);
 302							databaseBackend.updateContact(contact);
 303							if ((contact
 304									.getSubscriptionOption(Contact.Subscription.ASKING))
 305									&& (!contact
 306											.getSubscriptionOption(Contact.Subscription.TO))) {
 307								requestPresenceUpdatesFrom(contact);
 308							}
 309						} else {
 310							// TODO: ask user to handle it maybe
 311						}
 312					} else {
 313						// Log.d(LOGTAG, packet.toString());
 314					}
 315					replaceContactInConversation(contact.getJid(), contact);
 316				}
 317			}
 318		}
 319	};
 320
 321	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 322
 323		@Override
 324		public void onIqPacketReceived(Account account, IqPacket packet) {
 325			if (packet.hasChild("query")) {
 326				Element query = packet.findChild("query");
 327				String xmlns = query.getAttribute("xmlns");
 328				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 329					processRosterItems(account, query);
 330					mergePhoneContactsWithRoster(null);
 331				}
 332			}
 333		}
 334	};
 335
 336	private OpenPgpServiceConnection pgpServiceConnection;
 337	private PgpEngine mPgpEngine = null;
 338	private Intent pingIntent;
 339	private PendingIntent pendingPingIntent = null;
 340
 341	public PgpEngine getPgpEngine() {
 342		if (pgpServiceConnection.isBound()) {
 343			if (this.mPgpEngine == null) {
 344				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 345						getApplicationContext(),
 346						pgpServiceConnection.getService()));
 347			}
 348			return mPgpEngine;
 349		} else {
 350			return null;
 351		}
 352
 353	}
 354
 355	protected Conversation findMuc(String name, Account account) {
 356		for (Conversation conversation : this.conversations) {
 357			if (conversation.getContactJid().split("/")[0].equals(name)
 358					&& (conversation.getAccount() == account)) {
 359				return conversation;
 360			}
 361		}
 362		return null;
 363	}
 364
 365	private void processRosterItems(Account account, Element elements) {
 366		String version = elements.getAttribute("ver");
 367		if (version != null) {
 368			account.setRosterVersion(version);
 369			databaseBackend.updateAccount(account);
 370		}
 371		for (Element item : elements.getChildren()) {
 372			if (item.getName().equals("item")) {
 373				String jid = item.getAttribute("jid");
 374				String subscription = item.getAttribute("subscription");
 375				Contact contact = databaseBackend.findContact(account, jid);
 376				if (contact == null) {
 377					if (!subscription.equals("remove")) {
 378						String name = item.getAttribute("name");
 379						if (name == null) {
 380							name = jid.split("@")[0];
 381						}
 382						contact = new Contact(account, name, jid, null);
 383						contact.parseSubscriptionFromElement(item);
 384						databaseBackend.createContact(contact);
 385					}
 386				} else {
 387					if (subscription.equals("remove")) {
 388						databaseBackend.deleteContact(contact);
 389						replaceContactInConversation(contact.getJid(), null);
 390					} else {
 391						contact.parseSubscriptionFromElement(item);
 392						databaseBackend.updateContact(contact);
 393						replaceContactInConversation(contact.getJid(), contact);
 394					}
 395				}
 396			}
 397		}
 398	}
 399
 400	private void replaceContactInConversation(String jid, Contact contact) {
 401		List<Conversation> conversations = getConversations();
 402		for (int i = 0; i < conversations.size(); ++i) {
 403			if ((conversations.get(i).getContactJid().equals(jid))) {
 404				conversations.get(i).setContact(contact);
 405				break;
 406			}
 407		}
 408	}
 409
 410	public class XmppConnectionBinder extends Binder {
 411		public XmppConnectionService getService() {
 412			return XmppConnectionService.this;
 413		}
 414	}
 415
 416	@Override
 417	public int onStartCommand(Intent intent, int flags, int startId) {
 418		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 419		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 420				.getSystemService(Context.CONNECTIVITY_SERVICE);
 421		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 422		boolean isConnected = activeNetwork != null
 423				&& activeNetwork.isConnected();
 424
 425		for (Account account : accounts) {
 426			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 427				if (!isConnected) {
 428					account.setStatus(Account.STATUS_NO_INTERNET);
 429					if (statusListener != null) {
 430						statusListener.onStatusChanged(account);
 431					}
 432				} else {
 433					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 434						account.setStatus(Account.STATUS_OFFLINE);
 435						if (statusListener != null) {
 436							statusListener.onStatusChanged(account);
 437						}
 438					}
 439
 440					// TODO 3 remaining cases
 441					if (account.getStatus() == Account.STATUS_ONLINE) {
 442						long lastReceived = account.getXmppConnection().lastPaketReceived;
 443						long lastSent = account.getXmppConnection().lastPingSent;
 444						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 445							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 446							this.reconnectAccount(account, true);
 447						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 448							account.getXmppConnection().sendPing();
 449							account.getXmppConnection().lastPingSent = SystemClock
 450									.elapsedRealtime();
 451							this.scheduleWakeupCall(2, false);
 452						}
 453					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 454						if (account.getXmppConnection() == null) {
 455							account.setXmppConnection(this
 456									.createConnection(account));
 457						}
 458						account.getXmppConnection().lastPingSent = SystemClock
 459								.elapsedRealtime();
 460						new Thread(account.getXmppConnection()).start();
 461					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 462							&& ((SystemClock.elapsedRealtime() - account
 463									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 464						Log.d(LOGTAG, account.getJid()
 465								+ ": time out during connect reconnecting");
 466						reconnectAccount(account, true);
 467					} else {
 468						Log.d(LOGTAG,
 469								"seconds since last connect:"
 470										+ ((SystemClock.elapsedRealtime() - account
 471												.getXmppConnection().lastConnect) / 1000));
 472						Log.d(LOGTAG,
 473								account.getJid() + ": status="
 474										+ account.getStatus());
 475						// TODO notify user of ssl cert problem or auth problem
 476						// or what ever
 477					}
 478					// in any case. reschedule wakup call
 479					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 480				}
 481				if (accountChangedListener != null) {
 482					accountChangedListener.onAccountListChangedListener();
 483				}
 484			}
 485		}
 486		return START_STICKY;
 487	}
 488
 489	@Override
 490	public void onCreate() {
 491		ExceptionHelper.init(getApplicationContext());
 492		databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 493		this.accounts = databaseBackend.getAccounts();
 494
 495		getContentResolver().registerContentObserver(
 496				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 497		this.pgpServiceConnection = new OpenPgpServiceConnection(
 498				getApplicationContext(), "org.sufficientlysecure.keychain");
 499		this.pgpServiceConnection.bindToService();
 500
 501	}
 502
 503	@Override
 504	public void onDestroy() {
 505		super.onDestroy();
 506		for (Account account : accounts) {
 507			if (account.getXmppConnection() != null) {
 508				disconnect(account, true);
 509			}
 510		}
 511	}
 512
 513	protected void scheduleWakeupCall(int seconds, boolean ping) {
 514		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 515		Context context = getApplicationContext();
 516		AlarmManager alarmManager = (AlarmManager) context
 517				.getSystemService(Context.ALARM_SERVICE);
 518
 519		if (ping) {
 520			if (this.pingIntent == null) {
 521				this.pingIntent = new Intent(context, EventReceiver.class);
 522				this.pingIntent.setAction("ping");
 523				this.pingIntent.putExtra("time", timeToWake);
 524				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 525						this.pingIntent, 0);
 526				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 527						timeToWake, pendingPingIntent);
 528				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 529			} else {
 530				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 531				if (scheduledTime < SystemClock.elapsedRealtime()
 532						|| (scheduledTime > timeToWake)) {
 533					this.pingIntent.putExtra("time", timeToWake);
 534					alarmManager.cancel(this.pendingPingIntent);
 535					this.pendingPingIntent = PendingIntent.getBroadcast(
 536							context, 0, this.pingIntent, 0);
 537					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 538							timeToWake, pendingPingIntent);
 539					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 540				}
 541			}
 542		} else {
 543			Intent intent = new Intent(context, EventReceiver.class);
 544			intent.setAction("ping_check");
 545			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 546					intent, 0);
 547			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 548					alarmIntent);
 549		}
 550
 551	}
 552
 553	public XmppConnection createConnection(Account account) {
 554		SharedPreferences sharedPref = PreferenceManager
 555				.getDefaultSharedPreferences(getApplicationContext());
 556		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 557		PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 558		XmppConnection connection = new XmppConnection(account, pm);
 559		connection.setOnMessagePacketReceivedListener(this.messageListener);
 560		connection.setOnStatusChangedListener(this.statusListener);
 561		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 562		connection
 563				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 564		connection
 565				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 566
 567					@Override
 568					public void onTLSExceptionReceived(String fingerprint,
 569							Account account) {
 570						Log.d(LOGTAG, "tls exception arrived in service");
 571						if (tlsException != null) {
 572							tlsException.onTLSExceptionReceived(fingerprint,
 573									account);
 574						}
 575					}
 576				});
 577		connection.setOnBindListener(new OnBindListener() {
 578
 579			@Override
 580			public void onBind(Account account) {
 581				databaseBackend.clearPresences(account);
 582				account.clearPresences(); // self presences
 583				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 584					updateRoster(account, null);
 585				}
 586				connectMultiModeConversations(account);
 587				if (convChangedListener != null) {
 588					convChangedListener.onConversationListChanged();
 589				}
 590			}
 591		});
 592		return connection;
 593	}
 594
 595	synchronized public void sendMessage(Message message, String presence) {
 596		Account account = message.getConversation().getAccount();
 597		Conversation conv = message.getConversation();
 598		boolean saveInDb = false;
 599		boolean addToConversation = false;
 600		if (account.getStatus() == Account.STATUS_ONLINE) {
 601			MessagePacket packet;
 602			if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 603				if (!conv.hasValidOtrSession()) {
 604					// starting otr session. messages will be send later
 605					conv.startOtrSession(getApplicationContext(), presence);
 606				} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 607					// otr session aleary exists, creating message packet
 608					// accordingly
 609					packet = prepareMessagePacket(account, message,
 610							conv.getOtrSession());
 611					account.getXmppConnection().sendMessagePacket(packet);
 612					message.setStatus(Message.STATUS_SEND);
 613				}
 614				saveInDb = true;
 615				addToConversation = true;
 616			} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 617				message.getConversation().endOtrIfNeeded();
 618				long keyId = message.getConversation().getContact()
 619						.getPgpKeyId();
 620				packet = new MessagePacket();
 621				packet.setType(MessagePacket.TYPE_CHAT);
 622				packet.setFrom(message.getConversation().getAccount()
 623						.getFullJid());
 624				packet.setTo(message.getCounterpart());
 625				packet.setBody("This is an XEP-0027 encryted message");
 626				packet.addChild("x","jabber:x:encrypted").setContent(this.getPgpEngine().encrypt(keyId,
 627						message.getBody()));
 628				account.getXmppConnection().sendMessagePacket(packet);
 629				message.setStatus(Message.STATUS_SEND);
 630				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 631				saveInDb = true;
 632				addToConversation = true;
 633			} else {
 634				message.getConversation().endOtrIfNeeded();
 635				// don't encrypt
 636				if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 637					message.setStatus(Message.STATUS_SEND);
 638					saveInDb = true;
 639					addToConversation = true;
 640				}
 641
 642				packet = prepareMessagePacket(account, message, null);
 643				account.getXmppConnection().sendMessagePacket(packet);
 644			}
 645		} else {
 646			// account is offline
 647			saveInDb = true;
 648			addToConversation = true;
 649
 650		}
 651		if (saveInDb) {
 652			databaseBackend.createMessage(message);
 653		}
 654		if (addToConversation) {
 655			conv.getMessages().add(message);
 656			if (convChangedListener != null) {
 657				convChangedListener.onConversationListChanged();
 658			}
 659		}
 660
 661	}
 662
 663	private void sendUnsendMessages(Conversation conversation) {
 664		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 665			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 666				Message message = conversation.getMessages().get(i);
 667				MessagePacket packet = prepareMessagePacket(
 668						conversation.getAccount(), message, null);
 669				conversation.getAccount().getXmppConnection()
 670						.sendMessagePacket(packet);
 671				message.setStatus(Message.STATUS_SEND);
 672				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 673					databaseBackend.updateMessage(message);
 674				} else {
 675					databaseBackend.deleteMessage(message);
 676					conversation.getMessages().remove(i);
 677					i--;
 678				}
 679			}
 680		}
 681	}
 682
 683	public MessagePacket prepareMessagePacket(Account account, Message message,
 684			Session otrSession) {
 685		MessagePacket packet = new MessagePacket();
 686		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 687			packet.setType(MessagePacket.TYPE_CHAT);
 688			if (otrSession != null) {
 689				try {
 690					packet.setBody(otrSession.transformSending(message
 691							.getBody()));
 692				} catch (OtrException e) {
 693					Log.d(LOGTAG,
 694							account.getJid()
 695									+ ": could not encrypt message to "
 696									+ message.getCounterpart());
 697				}
 698				packet.addChild("private","urn:xmpp:carbons:2");
 699				packet.addChild("no-copy","urn:xmpp:hints");
 700				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 701						+ otrSession.getSessionID().getUserID());
 702				packet.setFrom(account.getFullJid());
 703			} else {
 704				packet.setBody(message.getBody());
 705				packet.setTo(message.getCounterpart());
 706				packet.setFrom(account.getJid());
 707			}
 708		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 709			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 710			packet.setBody(message.getBody());
 711			packet.setTo(message.getCounterpart().split("/")[0]);
 712			packet.setFrom(account.getJid());
 713		}
 714		return packet;
 715	}
 716
 717	private void getRoster(Account account,
 718			final OnRosterFetchedListener listener) {
 719		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 720		for (int i = 0; i < contacts.size(); ++i) {
 721			contacts.get(i).setAccount(account);
 722		}
 723		if (listener != null) {
 724			listener.onRosterFetched(contacts);
 725		}
 726	}
 727
 728	public List<Contact> getRoster(Account account) {
 729		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 730		for (int i = 0; i < contacts.size(); ++i) {
 731			contacts.get(i).setAccount(account);
 732		}
 733		return contacts;
 734	}
 735
 736	public void updateRoster(final Account account,
 737			final OnRosterFetchedListener listener) {
 738		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 739		if (!"".equals(account.getRosterVersion())) {
 740			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 741					+ account.getRosterVersion());
 742		} else {
 743			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 744		}
 745		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 746		account.getXmppConnection().sendIqPacket(iqPacket,
 747				new OnIqPacketReceived() {
 748
 749					@Override
 750					public void onIqPacketReceived(final Account account,
 751							IqPacket packet) {
 752						Element roster = packet.findChild("query");
 753						if (roster != null) {
 754							Log.d(LOGTAG, account.getJid()
 755									+ ": processing roster");
 756							processRosterItems(account, roster);
 757							StringBuilder mWhere = new StringBuilder();
 758							mWhere.append("jid NOT IN(");
 759							List<Element> items = roster.getChildren();
 760							for (int i = 0; i < items.size(); ++i) {
 761								mWhere.append(DatabaseUtils
 762										.sqlEscapeString(items.get(i)
 763												.getAttribute("jid")));
 764								if (i != items.size() - 1) {
 765									mWhere.append(",");
 766								}
 767							}
 768							mWhere.append(") and accountUuid = \"");
 769							mWhere.append(account.getUuid());
 770							mWhere.append("\"");
 771							List<Contact> contactsToDelete = databaseBackend
 772									.getContacts(mWhere.toString());
 773							for (Contact contact : contactsToDelete) {
 774								databaseBackend.deleteContact(contact);
 775								replaceContactInConversation(contact.getJid(),
 776										null);
 777							}
 778
 779						} else {
 780							Log.d(LOGTAG, account.getJid()
 781									+ ": empty roster returend");
 782						}
 783						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 784
 785							@Override
 786							public void phoneContactsMerged() {
 787								if (listener != null) {
 788									getRoster(account, listener);
 789								}
 790							}
 791						});
 792					}
 793				});
 794	}
 795
 796	public void mergePhoneContactsWithRoster(
 797			final OnPhoneContactsMerged listener) {
 798		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 799				new OnPhoneContactsLoadedListener() {
 800					@Override
 801					public void onPhoneContactsLoaded(
 802							Hashtable<String, Bundle> phoneContacts) {
 803						List<Contact> contacts = databaseBackend
 804								.getContactsByAccount(null);
 805						for (int i = 0; i < contacts.size(); ++i) {
 806							Contact contact = contacts.get(i);
 807							if (phoneContacts.containsKey(contact.getJid())) {
 808								Bundle phoneContact = phoneContacts.get(contact
 809										.getJid());
 810								String systemAccount = phoneContact
 811										.getInt("phoneid")
 812										+ "#"
 813										+ phoneContact.getString("lookup");
 814								contact.setSystemAccount(systemAccount);
 815								contact.setPhotoUri(phoneContact
 816										.getString("photouri"));
 817								contact.setDisplayName(phoneContact
 818										.getString("displayname"));
 819								databaseBackend.updateContact(contact);
 820								replaceContactInConversation(contact.getJid(),
 821										contact);
 822							} else {
 823								if ((contact.getSystemAccount() != null)
 824										|| (contact.getProfilePhoto() != null)) {
 825									contact.setSystemAccount(null);
 826									contact.setPhotoUri(null);
 827									databaseBackend.updateContact(contact);
 828									replaceContactInConversation(
 829											contact.getJid(), contact);
 830								}
 831							}
 832						}
 833						if (listener != null) {
 834							listener.phoneContactsMerged();
 835						}
 836					}
 837				});
 838	}
 839
 840	public List<Conversation> getConversations() {
 841		if (this.conversations == null) {
 842			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 843			for (Account account : this.accounts) {
 844				accountLookupTable.put(account.getUuid(), account);
 845			}
 846			this.conversations = databaseBackend
 847					.getConversations(Conversation.STATUS_AVAILABLE);
 848			for (Conversation conv : this.conversations) {
 849				Account account = accountLookupTable.get(conv.getAccountUuid());
 850				conv.setAccount(account);
 851				conv.setContact(findContact(account, conv.getContactJid()));
 852				conv.setMessages(databaseBackend.getMessages(conv, 50));
 853			}
 854		}
 855		Collections.sort(this.conversations, new Comparator<Conversation>() {
 856			@Override
 857			public int compare(Conversation lhs, Conversation rhs) {
 858				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 859						.getLatestMessage().getTimeSent());
 860			}
 861		});
 862		return this.conversations;
 863	}
 864
 865	public List<Account> getAccounts() {
 866		return this.accounts;
 867	}
 868
 869	public Contact findContact(Account account, String jid) {
 870		Contact contact = databaseBackend.findContact(account, jid);
 871		if (contact != null) {
 872			contact.setAccount(account);
 873		}
 874		return contact;
 875	}
 876
 877	public Conversation findOrCreateConversation(Account account, String jid,
 878			boolean muc) {
 879		for (Conversation conv : this.getConversations()) {
 880			if ((conv.getAccount().equals(account))
 881					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 882				return conv;
 883			}
 884		}
 885		Conversation conversation = databaseBackend.findConversation(account,
 886				jid);
 887		if (conversation != null) {
 888			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 889			conversation.setAccount(account);
 890			if (muc) {
 891				conversation.setMode(Conversation.MODE_MULTI);
 892				if (account.getStatus() == Account.STATUS_ONLINE) {
 893					joinMuc(conversation);
 894				}
 895			} else {
 896				conversation.setMode(Conversation.MODE_SINGLE);
 897			}
 898			conversation.setMessages(databaseBackend.getMessages(conversation,
 899					50));
 900			this.databaseBackend.updateConversation(conversation);
 901			conversation.setContact(findContact(account,
 902					conversation.getContactJid()));
 903		} else {
 904			String conversationName;
 905			Contact contact = findContact(account, jid);
 906			if (contact != null) {
 907				conversationName = contact.getDisplayName();
 908			} else {
 909				conversationName = jid.split("@")[0];
 910			}
 911			if (muc) {
 912				conversation = new Conversation(conversationName, account, jid,
 913						Conversation.MODE_MULTI);
 914				if (account.getStatus() == Account.STATUS_ONLINE) {
 915					joinMuc(conversation);
 916				}
 917			} else {
 918				conversation = new Conversation(conversationName, account, jid,
 919						Conversation.MODE_SINGLE);
 920			}
 921			conversation.setContact(contact);
 922			this.databaseBackend.createConversation(conversation);
 923		}
 924		this.conversations.add(conversation);
 925		if (this.convChangedListener != null) {
 926			this.convChangedListener.onConversationListChanged();
 927		}
 928		return conversation;
 929	}
 930
 931	public void archiveConversation(Conversation conversation) {
 932		if (conversation.getMode() == Conversation.MODE_MULTI) {
 933			leaveMuc(conversation);
 934		} else {
 935			conversation.endOtrIfNeeded();
 936		}
 937		this.databaseBackend.updateConversation(conversation);
 938		this.conversations.remove(conversation);
 939		if (this.convChangedListener != null) {
 940			this.convChangedListener.onConversationListChanged();
 941		}
 942	}
 943
 944	public int getConversationCount() {
 945		return this.databaseBackend.getConversationCount();
 946	}
 947
 948	public void createAccount(Account account) {
 949		databaseBackend.createAccount(account);
 950		this.accounts.add(account);
 951		this.reconnectAccount(account, false);
 952		if (accountChangedListener != null)
 953			accountChangedListener.onAccountListChangedListener();
 954	}
 955
 956	public void deleteContact(Contact contact) {
 957		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
 958		Element query = iq.query("jabber:iq:roster");
 959		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
 960		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
 961		replaceContactInConversation(contact.getJid(), null);
 962		databaseBackend.deleteContact(contact);
 963	}
 964
 965	public void updateAccount(Account account) {
 966		databaseBackend.updateAccount(account);
 967		reconnectAccount(account, false);
 968		if (accountChangedListener != null)
 969			accountChangedListener.onAccountListChangedListener();
 970	}
 971
 972	public void deleteAccount(Account account) {
 973		if (account.getXmppConnection() != null) {
 974			this.disconnect(account, true);
 975		}
 976		databaseBackend.deleteAccount(account);
 977		this.accounts.remove(account);
 978		if (accountChangedListener != null)
 979			accountChangedListener.onAccountListChangedListener();
 980	}
 981
 982	public void setOnConversationListChangedListener(
 983			OnConversationListChangedListener listener) {
 984		this.convChangedListener = listener;
 985	}
 986
 987	public void removeOnConversationListChangedListener() {
 988		this.convChangedListener = null;
 989	}
 990
 991	public void setOnAccountListChangedListener(
 992			OnAccountListChangedListener listener) {
 993		this.accountChangedListener = listener;
 994	}
 995
 996	public void removeOnAccountListChangedListener() {
 997		this.accountChangedListener = null;
 998	}
 999
1000	public void connectMultiModeConversations(Account account) {
1001		List<Conversation> conversations = getConversations();
1002		for (int i = 0; i < conversations.size(); i++) {
1003			Conversation conversation = conversations.get(i);
1004			if ((conversation.getMode() == Conversation.MODE_MULTI)
1005					&& (conversation.getAccount() == account)) {
1006				joinMuc(conversation);
1007			}
1008		}
1009	}
1010
1011	public void joinMuc(Conversation conversation) {
1012		String[] mucParts = conversation.getContactJid().split("/");
1013		String muc;
1014		String nick;
1015		if (mucParts.length == 2) {
1016			muc = mucParts[0];
1017			nick = mucParts[1];
1018		} else {
1019			muc = mucParts[0];
1020			nick = conversation.getAccount().getUsername();
1021		}
1022		PresencePacket packet = new PresencePacket();
1023		packet.setAttribute("to", muc + "/" + nick);
1024		Element x = new Element("x");
1025		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1026		if (conversation.getMessages().size() != 0) {
1027			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1028			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1029			x.addChild("history").setAttribute("seconds", diff + "");
1030		}
1031		packet.addChild(x);
1032		conversation.getAccount().getXmppConnection()
1033				.sendPresencePacket(packet);
1034	}
1035
1036	private OnRenameListener renameListener = null;
1037
1038	public void setOnRenameListener(OnRenameListener listener) {
1039		this.renameListener = listener;
1040	}
1041
1042	public void renameInMuc(final Conversation conversation, final String nick) {
1043		final MucOptions options = conversation.getMucOptions();
1044		if (options.online()) {
1045			options.setOnRenameListener(new OnRenameListener() {
1046
1047				@Override
1048				public void onRename(boolean success) {
1049					if (renameListener != null) {
1050						renameListener.onRename(success);
1051					}
1052					if (success) {
1053						databaseBackend.updateConversation(conversation);
1054					}
1055				}
1056			});
1057			options.flagAboutToRename();
1058			PresencePacket packet = new PresencePacket();
1059			packet.setAttribute("to",
1060					conversation.getContactJid().split("/")[0] + "/" + nick);
1061			packet.setAttribute("from", conversation.getAccount().getFullJid());
1062
1063			conversation.getAccount().getXmppConnection()
1064					.sendPresencePacket(packet, null);
1065		} else {
1066			String jid = conversation.getContactJid().split("/")[0] + "/"
1067					+ nick;
1068			conversation.setContactJid(jid);
1069			databaseBackend.updateConversation(conversation);
1070			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1071				joinMuc(conversation);
1072			}
1073		}
1074	}
1075
1076	public void leaveMuc(Conversation conversation) {
1077		PresencePacket packet = new PresencePacket();
1078		packet.setAttribute("to", conversation.getContactJid());
1079		packet.setAttribute("from", conversation.getAccount().getFullJid());
1080		packet.setAttribute("type", "unavailable");
1081		conversation.getAccount().getXmppConnection()
1082				.sendPresencePacket(packet);
1083		conversation.getMucOptions().setOffline();
1084	}
1085
1086	public void disconnect(Account account, boolean force) {
1087		if ((account.getStatus() == Account.STATUS_ONLINE)
1088				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1089			if (!force) {
1090				List<Conversation> conversations = getConversations();
1091				for (int i = 0; i < conversations.size(); i++) {
1092					Conversation conversation = conversations.get(i);
1093					if (conversation.getAccount() == account) {
1094						if (conversation.getMode() == Conversation.MODE_MULTI) {
1095							leaveMuc(conversation);
1096						} else {
1097							conversation.endOtrIfNeeded();
1098						}
1099					}
1100				}
1101			}
1102			account.getXmppConnection().disconnect(force);
1103		}
1104	}
1105
1106	@Override
1107	public IBinder onBind(Intent intent) {
1108		return mBinder;
1109	}
1110
1111	public void updateContact(Contact contact) {
1112		databaseBackend.updateContact(contact);
1113		replaceContactInConversation(contact.getJid(), contact);
1114	}
1115
1116	public void updateMessage(Message message) {
1117		databaseBackend.updateMessage(message);
1118	}
1119
1120	public void createContact(Contact contact) {
1121		SharedPreferences sharedPref = PreferenceManager
1122				.getDefaultSharedPreferences(getApplicationContext());
1123		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1124		if (autoGrant) {
1125			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1126			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1127		}
1128		databaseBackend.createContact(contact);
1129		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1130		Element query = new Element("query");
1131		query.setAttribute("xmlns", "jabber:iq:roster");
1132		Element item = new Element("item");
1133		item.setAttribute("jid", contact.getJid());
1134		item.setAttribute("name", contact.getJid());
1135		query.addChild(item);
1136		iq.addChild(query);
1137		Account account = contact.getAccount();
1138		account.getXmppConnection().sendIqPacket(iq, null);
1139		if (autoGrant) {
1140			requestPresenceUpdatesFrom(contact);
1141		}
1142		replaceContactInConversation(contact.getJid(), contact);
1143	}
1144
1145	public void requestPresenceUpdatesFrom(Contact contact) {
1146		// Requesting a Subscription type=subscribe
1147		PresencePacket packet = new PresencePacket();
1148		packet.setAttribute("type", "subscribe");
1149		packet.setAttribute("to", contact.getJid());
1150		packet.setAttribute("from", contact.getAccount().getJid());
1151		Log.d(LOGTAG, packet.toString());
1152		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1153	}
1154
1155	public void stopPresenceUpdatesFrom(Contact contact) {
1156		// Unsubscribing type='unsubscribe'
1157		PresencePacket packet = new PresencePacket();
1158		packet.setAttribute("type", "unsubscribe");
1159		packet.setAttribute("to", contact.getJid());
1160		packet.setAttribute("from", contact.getAccount().getJid());
1161		Log.d(LOGTAG, packet.toString());
1162		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1163	}
1164
1165	public void stopPresenceUpdatesTo(Contact contact) {
1166		// Canceling a Subscription type=unsubscribed
1167		PresencePacket packet = new PresencePacket();
1168		packet.setAttribute("type", "unsubscribed");
1169		packet.setAttribute("to", contact.getJid());
1170		packet.setAttribute("from", contact.getAccount().getJid());
1171		Log.d(LOGTAG, packet.toString());
1172		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1173	}
1174
1175	public void sendPresenceUpdatesTo(Contact contact) {
1176		// type='subscribed'
1177		PresencePacket packet = new PresencePacket();
1178		packet.setAttribute("type", "subscribed");
1179		packet.setAttribute("to", contact.getJid());
1180		packet.setAttribute("from", contact.getAccount().getJid());
1181		Log.d(LOGTAG, packet.toString());
1182		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1183	}
1184
1185	public void sendPgpPresence(Account account, String signature) {
1186		PresencePacket packet = new PresencePacket();
1187		packet.setAttribute("from", account.getFullJid());
1188		Element status = new Element("status");
1189		status.setContent("online");
1190		packet.addChild(status);
1191		Element x = new Element("x");
1192		x.setAttribute("xmlns", "jabber:x:signed");
1193		x.setContent(signature);
1194		packet.addChild(x);
1195		account.getXmppConnection().sendPresencePacket(packet);
1196	}
1197
1198	public void generatePgpAnnouncement(Account account)
1199			throws PgpEngine.UserInputRequiredException {
1200		if (account.getStatus() == Account.STATUS_ONLINE) {
1201			String signature = getPgpEngine().generateSignature("online");
1202			account.setKey("pgp_signature", signature);
1203			databaseBackend.updateAccount(account);
1204			sendPgpPresence(account, signature);
1205		}
1206	}
1207
1208	public void updateConversation(Conversation conversation) {
1209		this.databaseBackend.updateConversation(conversation);
1210	}
1211
1212	public Contact findContact(String uuid) {
1213		Contact contact = this.databaseBackend.getContact(uuid);
1214		for (Account account : getAccounts()) {
1215			if (contact.getAccountUuid().equals(account.getUuid())) {
1216				contact.setAccount(account);
1217			}
1218		}
1219		return contact;
1220	}
1221
1222	public void removeOnTLSExceptionReceivedListener() {
1223		this.tlsException = null;
1224	}
1225
1226	// TODO dont let thread sleep but schedule wake up
1227	public void reconnectAccount(final Account account, final boolean force) {
1228		new Thread(new Runnable() {
1229
1230			@Override
1231			public void run() {
1232				if (account.getXmppConnection() != null) {
1233					disconnect(account, force);
1234				}
1235				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1236					if (account.getXmppConnection() == null) {
1237						account.setXmppConnection(createConnection(account));
1238					}
1239					Thread thread = new Thread(account.getXmppConnection());
1240					thread.start();
1241					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1242				}
1243			}
1244		}).start();
1245	}
1246
1247	public void updateConversationInGui() {
1248		if (convChangedListener != null) {
1249			convChangedListener.onConversationListChanged();
1250		}
1251	}
1252
1253	public void sendConversationSubject(Conversation conversation,
1254			String subject) {
1255		MessagePacket packet = new MessagePacket();
1256		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1257		packet.setTo(conversation.getContactJid().split("/")[0]);
1258		Element subjectChild = new Element("subject");
1259		subjectChild.setContent(subject);
1260		packet.addChild(subjectChild);
1261		packet.setFrom(conversation.getAccount().getJid());
1262		Account account = conversation.getAccount();
1263		if (account.getStatus() == Account.STATUS_ONLINE) {
1264			account.getXmppConnection().sendMessagePacket(packet);
1265		}
1266	}
1267
1268	public void inviteToConference(Conversation conversation,
1269			List<Contact> contacts) {
1270		for (Contact contact : contacts) {
1271			MessagePacket packet = new MessagePacket();
1272			packet.setTo(conversation.getContactJid().split("/")[0]);
1273			packet.setFrom(conversation.getAccount().getFullJid());
1274			Element x = new Element("x");
1275			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1276			Element invite = new Element("invite");
1277			invite.setAttribute("to", contact.getJid());
1278			x.addChild(invite);
1279			packet.addChild(x);
1280			Log.d(LOGTAG, packet.toString());
1281			conversation.getAccount().getXmppConnection()
1282					.sendMessagePacket(packet);
1283		}
1284
1285	}
1286}