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.OnJinglePacketReceived;
  43import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  44import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  45import eu.siacs.conversations.xmpp.OnStatusChanged;
  46import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  47import eu.siacs.conversations.xmpp.XmppConnection;
  48import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  49import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  50import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  51import eu.siacs.conversations.xmpp.stanzas.jingle.JinglePacket;
  52import android.app.AlarmManager;
  53import android.app.PendingIntent;
  54import android.app.Service;
  55import android.content.Context;
  56import android.content.Intent;
  57import android.content.SharedPreferences;
  58import android.database.ContentObserver;
  59import android.database.DatabaseUtils;
  60import android.net.ConnectivityManager;
  61import android.net.NetworkInfo;
  62import android.os.Binder;
  63import android.os.Bundle;
  64import android.os.IBinder;
  65import android.os.PowerManager;
  66import android.os.PowerManager.WakeLock;
  67import android.os.SystemClock;
  68import android.preference.PreferenceManager;
  69import android.provider.ContactsContract;
  70import android.util.Log;
  71
  72public class XmppConnectionService extends Service {
  73
  74	protected static final String LOGTAG = "xmppService";
  75	public DatabaseBackend databaseBackend;
  76
  77	public long startDate;
  78
  79	private static final int PING_MAX_INTERVAL = 300;
  80	private static final int PING_MIN_INTERVAL = 10;
  81	private static final int PING_TIMEOUT = 5;
  82	private static final int CONNECT_TIMEOUT = 60;
  83
  84	private List<Account> accounts;
  85	private List<Conversation> conversations = null;
  86
  87	public OnConversationListChangedListener convChangedListener = null;
  88	private OnAccountListChangedListener accountChangedListener = null;
  89	private OnTLSExceptionReceived tlsException = null;
  90
  91	public void setOnTLSExceptionReceivedListener(
  92			OnTLSExceptionReceived listener) {
  93		tlsException = listener;
  94	}
  95
  96	private Random mRandom = new Random(System.currentTimeMillis());
  97
  98	private ContentObserver contactObserver = new ContentObserver(null) {
  99		@Override
 100		public void onChange(boolean selfChange) {
 101			super.onChange(selfChange);
 102			Log.d(LOGTAG, "contact list has changed");
 103			mergePhoneContactsWithRoster(null);
 104		}
 105	};
 106
 107	private XmppConnectionService service = this;
 108
 109	private final IBinder mBinder = new XmppConnectionBinder();
 110	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 111
 112		@Override
 113		public void onMessagePacketReceived(Account account,
 114				MessagePacket packet) {
 115			Message message = null;
 116			boolean notify = true;
 117			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 118				String pgpBody = MessageParser.getPgpBody(packet);
 119				if (pgpBody != null) {
 120					message = MessageParser.parsePgpChat(pgpBody, packet,
 121							account, service);
 122					message.markUnread();
 123				} else if (packet.hasChild("body")
 124						&& (packet.getBody().startsWith("?OTR"))) {
 125					message = MessageParser.parseOtrChat(packet, account,
 126							service);
 127					if (message != null) {
 128						message.markUnread();
 129					}
 130				} else if (packet.hasChild("body")) {
 131					message = MessageParser.parsePlainTextChat(packet, account,
 132							service);
 133					message.markUnread();
 134				} else if (packet.hasChild("received")
 135						|| (packet.hasChild("sent"))) {
 136					message = MessageParser.parseCarbonMessage(packet, account,
 137							service);
 138					if (message != null) {
 139						message.getConversation().markRead();
 140					}
 141					notify = false;
 142				}
 143
 144			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 145				message = MessageParser
 146						.parseGroupchat(packet, account, service);
 147				if (message != null) {
 148					if (message.getStatus() == Message.STATUS_RECIEVED) {
 149						message.markUnread();
 150					} else {
 151						message.getConversation().markRead();
 152						notify = false;
 153					}
 154				}
 155			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 156				message = MessageParser.parseError(packet, account, service);
 157			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 158				if (packet.hasChild("x")) {
 159					Element x = packet.findChild("x");
 160					if (x.hasChild("invite")) {
 161						findOrCreateConversation(account, packet.getFrom(),
 162								true);
 163						if (convChangedListener != null) {
 164							convChangedListener.onConversationListChanged();
 165						}
 166						Log.d(LOGTAG,
 167								"invitation received to " + packet.getFrom());
 168					}
 169
 170				} else {
 171					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 172				}
 173			}
 174			if ((message == null) || (message.getBody() == null)) {
 175				return;
 176			}
 177			if (packet.hasChild("delay")) {
 178				try {
 179					String stamp = packet.findChild("delay").getAttribute(
 180							"stamp");
 181					stamp = stamp.replace("Z", "+0000");
 182					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 183							.parse(stamp);
 184					message.setTime(date.getTime());
 185				} catch (ParseException e) {
 186					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 187				}
 188			}
 189			Conversation conversation = message.getConversation();
 190			conversation.getMessages().add(message);
 191			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 192				databaseBackend.createMessage(message);
 193			}
 194			if (convChangedListener != null) {
 195				convChangedListener.onConversationListChanged();
 196			} else {
 197				UIHelper.updateNotification(getApplicationContext(),
 198						getConversations(), message.getConversation(), notify);
 199			}
 200		}
 201	};
 202	private OnStatusChanged statusListener = new OnStatusChanged() {
 203
 204		@Override
 205		public void onStatusChanged(Account account) {
 206			if (accountChangedListener != null) {
 207				accountChangedListener.onAccountListChangedListener();
 208			}
 209			if (account.getStatus() == Account.STATUS_ONLINE) {
 210				List<Conversation> conversations = getConversations();
 211				for (int i = 0; i < conversations.size(); ++i) {
 212					if (conversations.get(i).getAccount() == account) {
 213						sendUnsendMessages(conversations.get(i));
 214					}
 215				}
 216				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 217			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 218				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 219					int timeToReconnect = mRandom.nextInt(50) + 10;
 220					scheduleWakeupCall(timeToReconnect, false);
 221				}
 222
 223			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 224				databaseBackend.updateAccount(account);
 225				reconnectAccount(account, true);
 226			}
 227		}
 228	};
 229
 230	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 231
 232		@Override
 233		public void onPresencePacketReceived(Account account,
 234				PresencePacket packet) {
 235			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 236				Conversation muc = findMuc(
 237						packet.getAttribute("from").split("/")[0], account);
 238				if (muc != null) {
 239					muc.getMucOptions().processPacket(packet);
 240				} else {
 241					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 242				}
 243			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 244				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 245				if (muc != null) {
 246					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 247					int error = muc.getMucOptions().getError();
 248					muc.getMucOptions().processPacket(packet);
 249					if ((muc.getMucOptions().getError() != error)
 250							&& (convChangedListener != null)) {
 251						Log.d(LOGTAG, "muc error status changed");
 252						convChangedListener.onConversationListChanged();
 253					}
 254				}
 255			} else {
 256				String[] fromParts = packet.getAttribute("from").split("/");
 257				String type = packet.getAttribute("type");
 258				if (fromParts[0].equals(account.getJid())) {
 259					if (fromParts.length==2) {
 260						if (type == null) {
 261							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 262						} else if (type.equals("unavailable")) {
 263							account.removePresence(fromParts[1]);
 264						}
 265					}
 266						
 267				} else {
 268					Contact contact = findContact(account, fromParts[0]);
 269					if (contact == null) {
 270						// most likely roster not synced
 271						return;
 272					}
 273					if (type == null) {
 274						if (fromParts.length == 2) {
 275							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 276							PgpEngine pgp = getPgpEngine();
 277							if (pgp != null) {
 278								Element x = packet.findChild("x","jabber:x:signed");
 279								if (x != null) {
 280									try {
 281										Element status = packet.findChild("status");
 282										String msg;
 283										if (status!=null) {
 284											msg = status.getContent();
 285										} else {
 286											msg = "";
 287										}
 288										contact.setPgpKeyId(pgp.fetchKeyId(msg, x
 289														.getContent()));
 290									} catch (OpenPgpException e) {
 291										Log.d(LOGTAG, "faulty pgp. just ignore");
 292									}
 293								}
 294							}
 295							databaseBackend.updateContact(contact);
 296						} else {
 297							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 298						}
 299					} else if (type.equals("unavailable")) {
 300						if (fromParts.length != 2) {
 301							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 302						} else {
 303							contact.removePresence(fromParts[1]);
 304							databaseBackend.updateContact(contact);
 305						}
 306					} else if (type.equals("subscribe")) {
 307						if (contact
 308								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 309							sendPresenceUpdatesTo(contact);
 310							contact.setSubscriptionOption(Contact.Subscription.FROM);
 311							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 312							replaceContactInConversation(contact.getJid(),
 313									contact);
 314							databaseBackend.updateContact(contact);
 315							if ((contact
 316									.getSubscriptionOption(Contact.Subscription.ASKING))
 317									&& (!contact
 318											.getSubscriptionOption(Contact.Subscription.TO))) {
 319								requestPresenceUpdatesFrom(contact);
 320							}
 321						} else {
 322							// TODO: ask user to handle it maybe
 323						}
 324					} else {
 325						//Log.d(LOGTAG, packet.toString());
 326					}
 327					replaceContactInConversation(contact.getJid(), contact);
 328				}
 329			}
 330		}
 331	};
 332
 333	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 334
 335		@Override
 336		public void onIqPacketReceived(Account account, IqPacket packet) {
 337			if (packet.hasChild("query")) {
 338				Element query = packet.findChild("query");
 339				String xmlns = query.getAttribute("xmlns");
 340				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 341					processRosterItems(account, query);
 342					mergePhoneContactsWithRoster(null);
 343				}
 344			}
 345		}
 346	};
 347	
 348	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 349		
 350		@Override
 351		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 352			Log.d(LOGTAG,account.getJid()+": jingle packet received"+packet.toString());
 353		}
 354	};
 355
 356	private OpenPgpServiceConnection pgpServiceConnection;
 357	private PgpEngine mPgpEngine = null;
 358	private Intent pingIntent;
 359	private PendingIntent pendingPingIntent = null;
 360	private WakeLock wakeLock;
 361
 362	public PgpEngine getPgpEngine() {
 363		if (pgpServiceConnection.isBound()) {
 364			if (this.mPgpEngine == null) {
 365				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 366						getApplicationContext(),
 367						pgpServiceConnection.getService()));
 368			}
 369			return mPgpEngine;
 370		} else {
 371			return null;
 372		}
 373
 374	}
 375
 376	protected Conversation findMuc(String name, Account account) {
 377		for (Conversation conversation : this.conversations) {
 378			if (conversation.getContactJid().split("/")[0].equals(name)
 379					&& (conversation.getAccount() == account)) {
 380				return conversation;
 381			}
 382		}
 383		return null;
 384	}
 385
 386	private void processRosterItems(Account account, Element elements) {
 387		String version = elements.getAttribute("ver");
 388		if (version != null) {
 389			account.setRosterVersion(version);
 390			databaseBackend.updateAccount(account);
 391		}
 392		for (Element item : elements.getChildren()) {
 393			if (item.getName().equals("item")) {
 394				String jid = item.getAttribute("jid");
 395				String subscription = item.getAttribute("subscription");
 396				Contact contact = databaseBackend.findContact(account, jid);
 397				if (contact == null) {
 398					if (!subscription.equals("remove")) {
 399						String name = item.getAttribute("name");
 400						if (name == null) {
 401							name = jid.split("@")[0];
 402						}
 403						contact = new Contact(account, name, jid, null);
 404						contact.parseSubscriptionFromElement(item);
 405						databaseBackend.createContact(contact);
 406					}
 407				} else {
 408					if (subscription.equals("remove")) {
 409						databaseBackend.deleteContact(contact);
 410						replaceContactInConversation(contact.getJid(), null);
 411					} else {
 412						contact.parseSubscriptionFromElement(item);
 413						databaseBackend.updateContact(contact);
 414						replaceContactInConversation(contact.getJid(), contact);
 415					}
 416				}
 417			}
 418		}
 419	}
 420
 421	private void replaceContactInConversation(String jid, Contact contact) {
 422		List<Conversation> conversations = getConversations();
 423		for (int i = 0; i < conversations.size(); ++i) {
 424			if ((conversations.get(i).getContactJid().equals(jid))) {
 425				conversations.get(i).setContact(contact);
 426				break;
 427			}
 428		}
 429	}
 430
 431	public class XmppConnectionBinder extends Binder {
 432		public XmppConnectionService getService() {
 433			return XmppConnectionService.this;
 434		}
 435	}
 436
 437	@Override
 438	public int onStartCommand(Intent intent, int flags, int startId) {
 439		this.wakeLock.acquire();
 440		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 441		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 442				.getSystemService(Context.CONNECTIVITY_SERVICE);
 443		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 444		boolean isConnected = activeNetwork != null
 445				&& activeNetwork.isConnected();
 446
 447		for (Account account : accounts) {
 448			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 449				if (!isConnected) {
 450					account.setStatus(Account.STATUS_NO_INTERNET);
 451					if (statusListener != null) {
 452						statusListener.onStatusChanged(account);
 453					}
 454				} else {
 455					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 456						account.setStatus(Account.STATUS_OFFLINE);
 457						if (statusListener != null) {
 458							statusListener.onStatusChanged(account);
 459						}
 460					}
 461
 462					// TODO 3 remaining cases
 463					if (account.getStatus() == Account.STATUS_ONLINE) {
 464						long lastReceived = account.getXmppConnection().lastPaketReceived;
 465						long lastSent = account.getXmppConnection().lastPingSent;
 466						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 467							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 468							this.reconnectAccount(account, true);
 469						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 470							account.getXmppConnection().sendPing();
 471							account.getXmppConnection().lastPingSent = SystemClock
 472									.elapsedRealtime();
 473							this.scheduleWakeupCall(2, false);
 474						}
 475					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 476						if (account.getXmppConnection() == null) {
 477							account.setXmppConnection(this
 478									.createConnection(account));
 479						}
 480						account.getXmppConnection().lastPingSent = SystemClock
 481								.elapsedRealtime();
 482						new Thread(account.getXmppConnection()).start();
 483					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 484							&& ((SystemClock.elapsedRealtime() - account
 485									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 486						Log.d(LOGTAG, account.getJid()
 487								+ ": time out during connect reconnecting");
 488						reconnectAccount(account, true);
 489					} else {
 490						Log.d(LOGTAG,
 491								"seconds since last connect:"
 492										+ ((SystemClock.elapsedRealtime() - account
 493												.getXmppConnection().lastConnect) / 1000));
 494						Log.d(LOGTAG,
 495								account.getJid() + ": status="
 496										+ account.getStatus());
 497						// TODO notify user of ssl cert problem or auth problem
 498						// or what ever
 499					}
 500					// in any case. reschedule wakup call
 501					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 502				}
 503				if (accountChangedListener != null) {
 504					accountChangedListener.onAccountListChangedListener();
 505				}
 506			}
 507		}
 508		if (wakeLock.isHeld()) {
 509			wakeLock.release();
 510		}
 511		return START_STICKY;
 512	}
 513
 514	@Override
 515	public void onCreate() {
 516		ExceptionHelper.init(getApplicationContext());
 517		databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 518		this.accounts = databaseBackend.getAccounts();
 519
 520		this.getConversations();
 521		
 522		getContentResolver().registerContentObserver(
 523				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 524		this.pgpServiceConnection = new OpenPgpServiceConnection(
 525				getApplicationContext(), "org.sufficientlysecure.keychain");
 526		this.pgpServiceConnection.bindToService();
 527
 528		PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 529		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 530				"XmppConnection");
 531	}
 532
 533	@Override
 534	public void onDestroy() {
 535		super.onDestroy();
 536		for (Account account : accounts) {
 537			if (account.getXmppConnection() != null) {
 538				disconnect(account, true);
 539			}
 540		}
 541	}
 542
 543	protected void scheduleWakeupCall(int seconds, boolean ping) {
 544		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 545		Context context = getApplicationContext();
 546		AlarmManager alarmManager = (AlarmManager) context
 547				.getSystemService(Context.ALARM_SERVICE);
 548
 549		if (ping) {
 550			if (this.pingIntent == null) {
 551				this.pingIntent = new Intent(context, EventReceiver.class);
 552				this.pingIntent.setAction("ping");
 553				this.pingIntent.putExtra("time", timeToWake);
 554				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 555						this.pingIntent, 0);
 556				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 557						timeToWake, pendingPingIntent);
 558				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 559			} else {
 560				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 561				if (scheduledTime < SystemClock.elapsedRealtime()
 562						|| (scheduledTime > timeToWake)) {
 563					this.pingIntent.putExtra("time", timeToWake);
 564					alarmManager.cancel(this.pendingPingIntent);
 565					this.pendingPingIntent = PendingIntent.getBroadcast(
 566							context, 0, this.pingIntent, 0);
 567					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 568							timeToWake, pendingPingIntent);
 569					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 570				}
 571			}
 572		} else {
 573			Intent intent = new Intent(context, EventReceiver.class);
 574			intent.setAction("ping_check");
 575			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 576					intent, 0);
 577			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 578					alarmIntent);
 579		}
 580
 581	}
 582
 583	public XmppConnection createConnection(Account account) {
 584		SharedPreferences sharedPref = PreferenceManager
 585				.getDefaultSharedPreferences(getApplicationContext());
 586		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 587		XmppConnection connection = new XmppConnection(account, this.wakeLock);
 588		connection.setOnMessagePacketReceivedListener(this.messageListener);
 589		connection.setOnStatusChangedListener(this.statusListener);
 590		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 591		connection
 592				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 593		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 594		connection
 595				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 596
 597					@Override
 598					public void onTLSExceptionReceived(String fingerprint,
 599							Account account) {
 600						Log.d(LOGTAG, "tls exception arrived in service");
 601						if (tlsException != null) {
 602							tlsException.onTLSExceptionReceived(fingerprint,
 603									account);
 604						}
 605					}
 606				});
 607		connection.setOnBindListener(new OnBindListener() {
 608
 609			@Override
 610			public void onBind(Account account) {
 611				databaseBackend.clearPresences(account);
 612				account.clearPresences(); // self presences
 613				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 614					updateRoster(account, null);
 615				}
 616				connectMultiModeConversations(account);
 617				if (convChangedListener != null) {
 618					convChangedListener.onConversationListChanged();
 619				}
 620			}
 621		});
 622		return connection;
 623	}
 624
 625	synchronized public void sendMessage(Message message, String presence) {
 626		Account account = message.getConversation().getAccount();
 627		Conversation conv = message.getConversation();
 628		boolean saveInDb = false;
 629		boolean addToConversation = false;
 630		if (account.getStatus() == Account.STATUS_ONLINE) {
 631			MessagePacket packet;
 632			if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 633				if (!conv.hasValidOtrSession()) {
 634					// starting otr session. messages will be send later
 635					conv.startOtrSession(getApplicationContext(), presence,true);
 636				} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 637					// otr session aleary exists, creating message packet
 638					// accordingly
 639					packet = prepareMessagePacket(account, message,
 640							conv.getOtrSession());
 641					account.getXmppConnection().sendMessagePacket(packet);
 642					message.setStatus(Message.STATUS_SEND);
 643				}
 644				saveInDb = true;
 645				addToConversation = true;
 646			} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 647				message.getConversation().endOtrIfNeeded();
 648				long keyId = message.getConversation().getContact()
 649						.getPgpKeyId();
 650				packet = new MessagePacket();
 651				packet.setType(MessagePacket.TYPE_CHAT);
 652				packet.setFrom(message.getConversation().getAccount()
 653						.getFullJid());
 654				packet.setTo(message.getCounterpart());
 655				packet.setBody("This is an XEP-0027 encryted message");
 656				packet.addChild("x","jabber:x:encrypted").setContent(this.getPgpEngine().encrypt(keyId,
 657						message.getBody()));
 658				account.getXmppConnection().sendMessagePacket(packet);
 659				message.setStatus(Message.STATUS_SEND);
 660				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 661				saveInDb = true;
 662				addToConversation = true;
 663			} else {
 664				message.getConversation().endOtrIfNeeded();
 665				// don't encrypt
 666				if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 667					message.setStatus(Message.STATUS_SEND);
 668					saveInDb = true;
 669					addToConversation = true;
 670				}
 671
 672				packet = prepareMessagePacket(account, message, null);
 673				account.getXmppConnection().sendMessagePacket(packet);
 674			}
 675		} else {
 676			// account is offline
 677			saveInDb = true;
 678			addToConversation = true;
 679
 680		}
 681		if (saveInDb) {
 682			databaseBackend.createMessage(message);
 683		}
 684		if (addToConversation) {
 685			conv.getMessages().add(message);
 686			if (convChangedListener != null) {
 687				convChangedListener.onConversationListChanged();
 688			}
 689		}
 690
 691	}
 692
 693	private void sendUnsendMessages(Conversation conversation) {
 694		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 695			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 696				Message message = conversation.getMessages().get(i);
 697				MessagePacket packet = prepareMessagePacket(
 698						conversation.getAccount(), message, null);
 699				conversation.getAccount().getXmppConnection()
 700						.sendMessagePacket(packet);
 701				message.setStatus(Message.STATUS_SEND);
 702				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 703					databaseBackend.updateMessage(message);
 704				} else {
 705					databaseBackend.deleteMessage(message);
 706					conversation.getMessages().remove(i);
 707					i--;
 708				}
 709			}
 710		}
 711	}
 712
 713	public MessagePacket prepareMessagePacket(Account account, Message message,
 714			Session otrSession) {
 715		MessagePacket packet = new MessagePacket();
 716		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 717			packet.setType(MessagePacket.TYPE_CHAT);
 718			if (otrSession != null) {
 719				try {
 720					packet.setBody(otrSession.transformSending(message
 721							.getBody()));
 722				} catch (OtrException e) {
 723					Log.d(LOGTAG,
 724							account.getJid()
 725									+ ": could not encrypt message to "
 726									+ message.getCounterpart());
 727				}
 728				packet.addChild("private","urn:xmpp:carbons:2");
 729				packet.addChild("no-copy","urn:xmpp:hints");
 730				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 731						+ otrSession.getSessionID().getUserID());
 732				packet.setFrom(account.getFullJid());
 733			} else {
 734				packet.setBody(message.getBody());
 735				packet.setTo(message.getCounterpart());
 736				packet.setFrom(account.getJid());
 737			}
 738		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 739			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 740			packet.setBody(message.getBody());
 741			packet.setTo(message.getCounterpart().split("/")[0]);
 742			packet.setFrom(account.getJid());
 743		}
 744		return packet;
 745	}
 746
 747	private void getRoster(Account account,
 748			final OnRosterFetchedListener listener) {
 749		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 750		for (int i = 0; i < contacts.size(); ++i) {
 751			contacts.get(i).setAccount(account);
 752		}
 753		if (listener != null) {
 754			listener.onRosterFetched(contacts);
 755		}
 756	}
 757
 758	public List<Contact> getRoster(Account account) {
 759		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 760		for (int i = 0; i < contacts.size(); ++i) {
 761			contacts.get(i).setAccount(account);
 762		}
 763		return contacts;
 764	}
 765
 766	public void updateRoster(final Account account,
 767			final OnRosterFetchedListener listener) {
 768		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 769		if (!"".equals(account.getRosterVersion())) {
 770			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 771					+ account.getRosterVersion());
 772		} else {
 773			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 774		}
 775		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 776		account.getXmppConnection().sendIqPacket(iqPacket,
 777				new OnIqPacketReceived() {
 778
 779					@Override
 780					public void onIqPacketReceived(final Account account,
 781							IqPacket packet) {
 782						Element roster = packet.findChild("query");
 783						if (roster != null) {
 784							Log.d(LOGTAG, account.getJid()
 785									+ ": processing roster");
 786							processRosterItems(account, roster);
 787							StringBuilder mWhere = new StringBuilder();
 788							mWhere.append("jid NOT IN(");
 789							List<Element> items = roster.getChildren();
 790							for (int i = 0; i < items.size(); ++i) {
 791								mWhere.append(DatabaseUtils
 792										.sqlEscapeString(items.get(i)
 793												.getAttribute("jid")));
 794								if (i != items.size() - 1) {
 795									mWhere.append(",");
 796								}
 797							}
 798							mWhere.append(") and accountUuid = \"");
 799							mWhere.append(account.getUuid());
 800							mWhere.append("\"");
 801							List<Contact> contactsToDelete = databaseBackend
 802									.getContacts(mWhere.toString());
 803							for (Contact contact : contactsToDelete) {
 804								databaseBackend.deleteContact(contact);
 805								replaceContactInConversation(contact.getJid(),
 806										null);
 807							}
 808
 809						} else {
 810							Log.d(LOGTAG, account.getJid()
 811									+ ": empty roster returend");
 812						}
 813						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 814
 815							@Override
 816							public void phoneContactsMerged() {
 817								if (listener != null) {
 818									getRoster(account, listener);
 819								}
 820							}
 821						});
 822					}
 823				});
 824	}
 825
 826	public void mergePhoneContactsWithRoster(
 827			final OnPhoneContactsMerged listener) {
 828		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 829				new OnPhoneContactsLoadedListener() {
 830					@Override
 831					public void onPhoneContactsLoaded(
 832							Hashtable<String, Bundle> phoneContacts) {
 833						List<Contact> contacts = databaseBackend
 834								.getContactsByAccount(null);
 835						for (int i = 0; i < contacts.size(); ++i) {
 836							Contact contact = contacts.get(i);
 837							if (phoneContacts.containsKey(contact.getJid())) {
 838								Bundle phoneContact = phoneContacts.get(contact
 839										.getJid());
 840								String systemAccount = phoneContact
 841										.getInt("phoneid")
 842										+ "#"
 843										+ phoneContact.getString("lookup");
 844								contact.setSystemAccount(systemAccount);
 845								contact.setPhotoUri(phoneContact
 846										.getString("photouri"));
 847								contact.setDisplayName(phoneContact
 848										.getString("displayname"));
 849								databaseBackend.updateContact(contact);
 850								replaceContactInConversation(contact.getJid(),
 851										contact);
 852							} else {
 853								if ((contact.getSystemAccount() != null)
 854										|| (contact.getProfilePhoto() != null)) {
 855									contact.setSystemAccount(null);
 856									contact.setPhotoUri(null);
 857									databaseBackend.updateContact(contact);
 858									replaceContactInConversation(
 859											contact.getJid(), contact);
 860								}
 861							}
 862						}
 863						if (listener != null) {
 864							listener.phoneContactsMerged();
 865						}
 866					}
 867				});
 868	}
 869
 870	public List<Conversation> getConversations() {
 871		if (this.conversations == null) {
 872			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 873			for (Account account : this.accounts) {
 874				accountLookupTable.put(account.getUuid(), account);
 875			}
 876			this.conversations = databaseBackend
 877					.getConversations(Conversation.STATUS_AVAILABLE);
 878			for (Conversation conv : this.conversations) {
 879				Account account = accountLookupTable.get(conv.getAccountUuid());
 880				conv.setAccount(account);
 881				conv.setContact(findContact(account, conv.getContactJid()));
 882				conv.setMessages(databaseBackend.getMessages(conv, 50));
 883			}
 884		}
 885		Collections.sort(this.conversations, new Comparator<Conversation>() {
 886			@Override
 887			public int compare(Conversation lhs, Conversation rhs) {
 888				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 889						.getLatestMessage().getTimeSent());
 890			}
 891		});
 892		return this.conversations;
 893	}
 894
 895	public List<Account> getAccounts() {
 896		return this.accounts;
 897	}
 898
 899	public Contact findContact(Account account, String jid) {
 900		Contact contact = databaseBackend.findContact(account, jid);
 901		if (contact != null) {
 902			contact.setAccount(account);
 903		}
 904		return contact;
 905	}
 906
 907	public Conversation findOrCreateConversation(Account account, String jid,
 908			boolean muc) {
 909		for (Conversation conv : this.getConversations()) {
 910			if ((conv.getAccount().equals(account))
 911					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 912				return conv;
 913			}
 914		}
 915		Conversation conversation = databaseBackend.findConversation(account,
 916				jid);
 917		if (conversation != null) {
 918			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 919			conversation.setAccount(account);
 920			if (muc) {
 921				conversation.setMode(Conversation.MODE_MULTI);
 922			} else {
 923				conversation.setMode(Conversation.MODE_SINGLE);
 924			}
 925			conversation.setMessages(databaseBackend.getMessages(conversation,
 926					50));
 927			this.databaseBackend.updateConversation(conversation);
 928			conversation.setContact(findContact(account,
 929					conversation.getContactJid()));
 930		} else {
 931			String conversationName;
 932			Contact contact = findContact(account, jid);
 933			if (contact != null) {
 934				conversationName = contact.getDisplayName();
 935			} else {
 936				conversationName = jid.split("@")[0];
 937			}
 938			if (muc) {
 939				conversation = new Conversation(conversationName, account, jid,
 940						Conversation.MODE_MULTI);
 941			} else {
 942				conversation = new Conversation(conversationName, account, jid,
 943						Conversation.MODE_SINGLE);
 944			}
 945			conversation.setContact(contact);
 946			this.databaseBackend.createConversation(conversation);
 947		}
 948		this.conversations.add(conversation);
 949		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
 950			joinMuc(conversation);
 951		}
 952		if (this.convChangedListener != null) {
 953			this.convChangedListener.onConversationListChanged();
 954		}
 955		return conversation;
 956	}
 957
 958	public void archiveConversation(Conversation conversation) {
 959		if (conversation.getMode() == Conversation.MODE_MULTI) {
 960			leaveMuc(conversation);
 961		} else {
 962			conversation.endOtrIfNeeded();
 963		}
 964		this.databaseBackend.updateConversation(conversation);
 965		this.conversations.remove(conversation);
 966		if (this.convChangedListener != null) {
 967			this.convChangedListener.onConversationListChanged();
 968		}
 969	}
 970
 971	public int getConversationCount() {
 972		return this.databaseBackend.getConversationCount();
 973	}
 974
 975	public void createAccount(Account account) {
 976		databaseBackend.createAccount(account);
 977		this.accounts.add(account);
 978		this.reconnectAccount(account, false);
 979		if (accountChangedListener != null)
 980			accountChangedListener.onAccountListChangedListener();
 981	}
 982
 983	public void deleteContact(Contact contact) {
 984		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
 985		Element query = iq.query("jabber:iq:roster");
 986		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
 987		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
 988		replaceContactInConversation(contact.getJid(), null);
 989		databaseBackend.deleteContact(contact);
 990	}
 991
 992	public void updateAccount(Account account) {
 993		databaseBackend.updateAccount(account);
 994		reconnectAccount(account, false);
 995		if (accountChangedListener != null)
 996			accountChangedListener.onAccountListChangedListener();
 997	}
 998
 999	public void deleteAccount(Account account) {
1000		if (account.getXmppConnection() != null) {
1001			this.disconnect(account, true);
1002		}
1003		databaseBackend.deleteAccount(account);
1004		this.accounts.remove(account);
1005		if (accountChangedListener != null)
1006			accountChangedListener.onAccountListChangedListener();
1007	}
1008
1009	public void setOnConversationListChangedListener(
1010			OnConversationListChangedListener listener) {
1011		this.convChangedListener = listener;
1012	}
1013
1014	public void removeOnConversationListChangedListener() {
1015		this.convChangedListener = null;
1016	}
1017
1018	public void setOnAccountListChangedListener(
1019			OnAccountListChangedListener listener) {
1020		this.accountChangedListener = listener;
1021	}
1022
1023	public void removeOnAccountListChangedListener() {
1024		this.accountChangedListener = null;
1025	}
1026
1027	public void connectMultiModeConversations(Account account) {
1028		List<Conversation> conversations = getConversations();
1029		for (int i = 0; i < conversations.size(); i++) {
1030			Conversation conversation = conversations.get(i);
1031			if ((conversation.getMode() == Conversation.MODE_MULTI)
1032					&& (conversation.getAccount() == account)) {
1033				joinMuc(conversation);
1034			}
1035		}
1036	}
1037
1038	public void joinMuc(Conversation conversation) {
1039		String[] mucParts = conversation.getContactJid().split("/");
1040		String muc;
1041		String nick;
1042		if (mucParts.length == 2) {
1043			muc = mucParts[0];
1044			nick = mucParts[1];
1045		} else {
1046			muc = mucParts[0];
1047			nick = conversation.getAccount().getUsername();
1048		}
1049		PresencePacket packet = new PresencePacket();
1050		packet.setAttribute("to", muc + "/" + nick);
1051		Element x = new Element("x");
1052		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1053		if (conversation.getMessages().size() != 0) {
1054			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1055			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1056			x.addChild("history").setAttribute("seconds", diff + "");
1057		}
1058		packet.addChild(x);
1059		Log.d(LOGTAG,conversation.getAccount().getJid()+": joining muc "+packet.toString());
1060		conversation.getAccount().getXmppConnection()
1061				.sendPresencePacket(packet);
1062	}
1063
1064	private OnRenameListener renameListener = null;
1065
1066	public void setOnRenameListener(OnRenameListener listener) {
1067		this.renameListener = listener;
1068	}
1069
1070	public void renameInMuc(final Conversation conversation, final String nick) {
1071		final MucOptions options = conversation.getMucOptions();
1072		if (options.online()) {
1073			options.setOnRenameListener(new OnRenameListener() {
1074
1075				@Override
1076				public void onRename(boolean success) {
1077					if (renameListener != null) {
1078						renameListener.onRename(success);
1079					}
1080					if (success) {
1081						databaseBackend.updateConversation(conversation);
1082					}
1083				}
1084			});
1085			options.flagAboutToRename();
1086			PresencePacket packet = new PresencePacket();
1087			packet.setAttribute("to",
1088					conversation.getContactJid().split("/")[0] + "/" + nick);
1089			packet.setAttribute("from", conversation.getAccount().getFullJid());
1090
1091			conversation.getAccount().getXmppConnection()
1092					.sendPresencePacket(packet, null);
1093		} else {
1094			String jid = conversation.getContactJid().split("/")[0] + "/"
1095					+ nick;
1096			conversation.setContactJid(jid);
1097			databaseBackend.updateConversation(conversation);
1098			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1099				joinMuc(conversation);
1100			}
1101		}
1102	}
1103
1104	public void leaveMuc(Conversation conversation) {
1105		PresencePacket packet = new PresencePacket();
1106		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1107		packet.setAttribute("from", conversation.getAccount().getFullJid());
1108		packet.setAttribute("type", "unavailable");
1109		Log.d(LOGTAG,"send leaving muc " + packet);
1110		conversation.getAccount().getXmppConnection()
1111				.sendPresencePacket(packet);
1112		conversation.getMucOptions().setOffline();
1113	}
1114
1115	public void disconnect(Account account, boolean force) {
1116		if ((account.getStatus() == Account.STATUS_ONLINE)
1117				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1118			if (!force) {
1119				List<Conversation> conversations = getConversations();
1120				for (int i = 0; i < conversations.size(); i++) {
1121					Conversation conversation = conversations.get(i);
1122					if (conversation.getAccount() == account) {
1123						if (conversation.getMode() == Conversation.MODE_MULTI) {
1124							leaveMuc(conversation);
1125						} else {
1126							conversation.endOtrIfNeeded();
1127						}
1128					}
1129				}
1130			}
1131			account.getXmppConnection().disconnect(force);
1132		}
1133	}
1134
1135	@Override
1136	public IBinder onBind(Intent intent) {
1137		return mBinder;
1138	}
1139
1140	public void updateContact(Contact contact) {
1141		databaseBackend.updateContact(contact);
1142		replaceContactInConversation(contact.getJid(), contact);
1143	}
1144
1145	public void updateMessage(Message message) {
1146		databaseBackend.updateMessage(message);
1147	}
1148
1149	public void createContact(Contact contact) {
1150		SharedPreferences sharedPref = PreferenceManager
1151				.getDefaultSharedPreferences(getApplicationContext());
1152		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1153		if (autoGrant) {
1154			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1155			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1156		}
1157		databaseBackend.createContact(contact);
1158		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1159		Element query = new Element("query");
1160		query.setAttribute("xmlns", "jabber:iq:roster");
1161		Element item = new Element("item");
1162		item.setAttribute("jid", contact.getJid());
1163		item.setAttribute("name", contact.getJid());
1164		query.addChild(item);
1165		iq.addChild(query);
1166		Account account = contact.getAccount();
1167		account.getXmppConnection().sendIqPacket(iq, null);
1168		if (autoGrant) {
1169			requestPresenceUpdatesFrom(contact);
1170		}
1171		replaceContactInConversation(contact.getJid(), contact);
1172	}
1173
1174	public void requestPresenceUpdatesFrom(Contact contact) {
1175		// Requesting a Subscription type=subscribe
1176		PresencePacket packet = new PresencePacket();
1177		packet.setAttribute("type", "subscribe");
1178		packet.setAttribute("to", contact.getJid());
1179		packet.setAttribute("from", contact.getAccount().getJid());
1180		Log.d(LOGTAG, packet.toString());
1181		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1182	}
1183
1184	public void stopPresenceUpdatesFrom(Contact contact) {
1185		// Unsubscribing type='unsubscribe'
1186		PresencePacket packet = new PresencePacket();
1187		packet.setAttribute("type", "unsubscribe");
1188		packet.setAttribute("to", contact.getJid());
1189		packet.setAttribute("from", contact.getAccount().getJid());
1190		Log.d(LOGTAG, packet.toString());
1191		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1192	}
1193
1194	public void stopPresenceUpdatesTo(Contact contact) {
1195		// Canceling a Subscription type=unsubscribed
1196		PresencePacket packet = new PresencePacket();
1197		packet.setAttribute("type", "unsubscribed");
1198		packet.setAttribute("to", contact.getJid());
1199		packet.setAttribute("from", contact.getAccount().getJid());
1200		Log.d(LOGTAG, packet.toString());
1201		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1202	}
1203
1204	public void sendPresenceUpdatesTo(Contact contact) {
1205		// type='subscribed'
1206		PresencePacket packet = new PresencePacket();
1207		packet.setAttribute("type", "subscribed");
1208		packet.setAttribute("to", contact.getJid());
1209		packet.setAttribute("from", contact.getAccount().getJid());
1210		Log.d(LOGTAG, packet.toString());
1211		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1212	}
1213
1214	public void sendPgpPresence(Account account, String signature) {
1215		PresencePacket packet = new PresencePacket();
1216		packet.setAttribute("from", account.getFullJid());
1217		Element status = new Element("status");
1218		status.setContent("online");
1219		packet.addChild(status);
1220		Element x = new Element("x");
1221		x.setAttribute("xmlns", "jabber:x:signed");
1222		x.setContent(signature);
1223		packet.addChild(x);
1224		account.getXmppConnection().sendPresencePacket(packet);
1225	}
1226
1227	public void generatePgpAnnouncement(Account account)
1228			throws PgpEngine.UserInputRequiredException {
1229		if (account.getStatus() == Account.STATUS_ONLINE) {
1230			String signature = getPgpEngine().generateSignature("online");
1231			account.setKey("pgp_signature", signature);
1232			databaseBackend.updateAccount(account);
1233			sendPgpPresence(account, signature);
1234		}
1235	}
1236
1237	public void updateConversation(Conversation conversation) {
1238		this.databaseBackend.updateConversation(conversation);
1239	}
1240
1241	public Contact findContact(String uuid) {
1242		Contact contact = this.databaseBackend.getContact(uuid);
1243		for (Account account : getAccounts()) {
1244			if (contact.getAccountUuid().equals(account.getUuid())) {
1245				contact.setAccount(account);
1246			}
1247		}
1248		return contact;
1249	}
1250
1251	public void removeOnTLSExceptionReceivedListener() {
1252		this.tlsException = null;
1253	}
1254
1255	// TODO dont let thread sleep but schedule wake up
1256	public void reconnectAccount(final Account account, final boolean force) {
1257		new Thread(new Runnable() {
1258
1259			@Override
1260			public void run() {
1261				if (account.getXmppConnection() != null) {
1262					disconnect(account, force);
1263				}
1264				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1265					if (account.getXmppConnection() == null) {
1266						account.setXmppConnection(createConnection(account));
1267					}
1268					Thread thread = new Thread(account.getXmppConnection());
1269					thread.start();
1270					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1271				}
1272			}
1273		}).start();
1274	}
1275
1276	public void updateConversationInGui() {
1277		if (convChangedListener != null) {
1278			convChangedListener.onConversationListChanged();
1279		}
1280	}
1281
1282	public void sendConversationSubject(Conversation conversation,
1283			String subject) {
1284		MessagePacket packet = new MessagePacket();
1285		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1286		packet.setTo(conversation.getContactJid().split("/")[0]);
1287		Element subjectChild = new Element("subject");
1288		subjectChild.setContent(subject);
1289		packet.addChild(subjectChild);
1290		packet.setFrom(conversation.getAccount().getJid());
1291		Account account = conversation.getAccount();
1292		if (account.getStatus() == Account.STATUS_ONLINE) {
1293			account.getXmppConnection().sendMessagePacket(packet);
1294		}
1295	}
1296
1297	public void inviteToConference(Conversation conversation,
1298			List<Contact> contacts) {
1299		for (Contact contact : contacts) {
1300			MessagePacket packet = new MessagePacket();
1301			packet.setTo(conversation.getContactJid().split("/")[0]);
1302			packet.setFrom(conversation.getAccount().getFullJid());
1303			Element x = new Element("x");
1304			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1305			Element invite = new Element("invite");
1306			invite.setAttribute("to", contact.getJid());
1307			x.addChild(invite);
1308			packet.addChild(x);
1309			Log.d(LOGTAG, packet.toString());
1310			conversation.getAccount().getXmppConnection()
1311					.sendMessagePacket(packet);
1312		}
1313
1314	}
1315}