XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.util.Collections;
   4import java.util.Comparator;
   5import java.util.Hashtable;
   6import java.util.List;
   7import java.util.Locale;
   8import java.util.Random;
   9
  10import org.openintents.openpgp.util.OpenPgpApi;
  11import org.openintents.openpgp.util.OpenPgpServiceConnection;
  12
  13import net.java.otr4j.OtrException;
  14import net.java.otr4j.session.Session;
  15import net.java.otr4j.session.SessionStatus;
  16import eu.siacs.conversations.crypto.PgpEngine;
  17import eu.siacs.conversations.entities.Account;
  18import eu.siacs.conversations.entities.Contact;
  19import eu.siacs.conversations.entities.Conversation;
  20import eu.siacs.conversations.entities.Message;
  21import eu.siacs.conversations.entities.MucOptions;
  22import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  23import eu.siacs.conversations.parser.MessageParser;
  24import eu.siacs.conversations.parser.PresenceParser;
  25import eu.siacs.conversations.persistance.DatabaseBackend;
  26import eu.siacs.conversations.persistance.FileBackend;
  27import eu.siacs.conversations.ui.OnAccountListChangedListener;
  28import eu.siacs.conversations.ui.OnConversationListChangedListener;
  29import eu.siacs.conversations.ui.UiCallback;
  30import eu.siacs.conversations.utils.ExceptionHelper;
  31import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  32import eu.siacs.conversations.utils.PhoneHelper;
  33import eu.siacs.conversations.utils.UIHelper;
  34import eu.siacs.conversations.xml.Element;
  35import eu.siacs.conversations.xmpp.OnBindListener;
  36import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  37import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  38import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  39import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  40import eu.siacs.conversations.xmpp.OnStatusChanged;
  41import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  42import eu.siacs.conversations.xmpp.XmppConnection;
  43import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  44import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  45import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  46import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  47import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  48import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  49import android.app.AlarmManager;
  50import android.app.PendingIntent;
  51import android.app.Service;
  52import android.content.Context;
  53import android.content.Intent;
  54import android.content.SharedPreferences;
  55import android.database.ContentObserver;
  56import android.net.ConnectivityManager;
  57import android.net.NetworkInfo;
  58import android.net.Uri;
  59import android.os.Binder;
  60import android.os.Bundle;
  61import android.os.IBinder;
  62import android.os.PowerManager;
  63import android.os.PowerManager.WakeLock;
  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	private FileBackend fileBackend;
  74
  75	public long startDate;
  76
  77	private static final int PING_MAX_INTERVAL = 300;
  78	private static final int PING_MIN_INTERVAL = 10;
  79	private static final int PING_TIMEOUT = 5;
  80	private static final int CONNECT_TIMEOUT = 60;
  81	private static final long CARBON_GRACE_PERIOD = 60000L;
  82
  83	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  84
  85	private MessageParser mMessageParser = new MessageParser(this);
  86	private PresenceParser mPresenceParser = new PresenceParser(this);
  87
  88	private List<Account> accounts;
  89	private List<Conversation> conversations = null;
  90	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
  91			this);
  92
  93	private OnConversationListChangedListener convChangedListener = null;
  94	private int convChangedListenerCount = 0;
  95	private OnAccountListChangedListener accountChangedListener = null;
  96	private OnTLSExceptionReceived tlsException = null;
  97	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
  98
  99		@Override
 100		public void onContactStatusChanged(Contact contact) {
 101			Conversation conversation = findActiveConversation(contact);
 102			if (conversation != null) {
 103				conversation.endOtrIfNeeded();
 104			}
 105		}
 106	};
 107
 108	public void setOnTLSExceptionReceivedListener(
 109			OnTLSExceptionReceived listener) {
 110		tlsException = listener;
 111	}
 112
 113	private Random mRandom = new Random(System.currentTimeMillis());
 114
 115	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 116
 117	private ContentObserver contactObserver = new ContentObserver(null) {
 118		@Override
 119		public void onChange(boolean selfChange) {
 120			super.onChange(selfChange);
 121			Intent intent = new Intent(getApplicationContext(),
 122					XmppConnectionService.class);
 123			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 124			startService(intent);
 125		}
 126	};
 127
 128	private final IBinder mBinder = new XmppConnectionBinder();
 129	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 130
 131		@Override
 132		public void onMessagePacketReceived(Account account,
 133				MessagePacket packet) {
 134			Message message = null;
 135			boolean notify = true;
 136			if (getPreferences().getBoolean(
 137					"notification_grace_period_after_carbon_received", true)) {
 138				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 139			}
 140
 141			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 142				if ((packet.getBody() != null)
 143						&& (packet.getBody().startsWith("?OTR"))) {
 144					message = mMessageParser.parseOtrChat(packet, account);
 145					if (message != null) {
 146						message.markUnread();
 147					}
 148				} else if (packet.hasChild("body")) {
 149					message = mMessageParser.parseChat(packet, account);
 150					message.markUnread();
 151				} else if (packet.hasChild("received")
 152						|| (packet.hasChild("sent"))) {
 153					message = mMessageParser
 154							.parseCarbonMessage(packet, account);
 155					if (message != null) {
 156						if (message.getStatus() == Message.STATUS_SEND) {
 157							lastCarbonMessageReceived = SystemClock
 158									.elapsedRealtime();
 159							notify = false;
 160							message.getConversation().markRead();
 161						} else {
 162							message.markUnread();
 163						}
 164					}
 165				}
 166
 167			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 168				message = mMessageParser.parseGroupchat(packet, account);
 169				if (message != null) {
 170					if (message.getStatus() == Message.STATUS_RECIEVED) {
 171						message.markUnread();
 172					} else {
 173						message.getConversation().markRead();
 174						notify = false;
 175					}
 176				}
 177			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 178				mMessageParser.parseError(packet, account);
 179				return;
 180			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 181				mMessageParser.parseNormal(packet, account);
 182			}
 183			if ((message == null) || (message.getBody() == null)) {
 184				return;
 185			}
 186			if ((confirmMessages()) && ((packet.getId() != null))) {
 187				MessagePacket receivedPacket = new MessagePacket();
 188				receivedPacket.setType(MessagePacket.TYPE_NORMAL);
 189				receivedPacket.setTo(message.getCounterpart());
 190				receivedPacket.setFrom(account.getFullJid());
 191				if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
 192					Element received = receivedPacket.addChild("received",
 193							"urn:xmpp:chat-markers:0");
 194					received.setAttribute("id", packet.getId());
 195					account.getXmppConnection().sendMessagePacket(
 196							receivedPacket);
 197				} else if (packet.hasChild("request", "urn:xmpp:receipts")) {
 198					Element received = receivedPacket.addChild("received",
 199							"urn:xmpp:receipts");
 200					received.setAttribute("id", packet.getId());
 201					account.getXmppConnection().sendMessagePacket(
 202							receivedPacket);
 203				}
 204			}
 205			Conversation conversation = message.getConversation();
 206			conversation.getMessages().add(message);
 207			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 208				databaseBackend.createMessage(message);
 209			}
 210			if (convChangedListener != null) {
 211				convChangedListener.onConversationListChanged();
 212			} else {
 213				UIHelper.updateNotification(getApplicationContext(),
 214						getConversations(), message.getConversation(), notify);
 215			}
 216		}
 217	};
 218	private OnStatusChanged statusListener = new OnStatusChanged() {
 219
 220		@Override
 221		public void onStatusChanged(Account account) {
 222			if (accountChangedListener != null) {
 223				accountChangedListener.onAccountListChangedListener();
 224			}
 225			if (account.getStatus() == Account.STATUS_ONLINE) {
 226				List<Conversation> conversations = getConversations();
 227				for (int i = 0; i < conversations.size(); ++i) {
 228					if (conversations.get(i).getAccount() == account) {
 229						sendUnsendMessages(conversations.get(i));
 230					}
 231				}
 232				syncDirtyContacts(account);
 233				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 234			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 235				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 236					int timeToReconnect = mRandom.nextInt(50) + 10;
 237					scheduleWakeupCall(timeToReconnect, false);
 238				}
 239
 240			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 241				databaseBackend.updateAccount(account);
 242				reconnectAccount(account, true);
 243			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 244					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 245				int next = account.getXmppConnection().getTimeToNextAttempt();
 246				Log.d(LOGTAG, account.getJid()
 247						+ ": error connecting account. try again in " + next
 248						+ "s for the "
 249						+ (account.getXmppConnection().getAttempt() + 1)
 250						+ " time");
 251				scheduleWakeupCall(next, false);
 252			}
 253			UIHelper.showErrorNotification(getApplicationContext(),
 254					getAccounts());
 255		}
 256	};
 257
 258	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 259
 260		@Override
 261		public void onPresencePacketReceived(final Account account,
 262				PresencePacket packet) {
 263			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 264				mPresenceParser.parseConferencePresence(packet, account);
 265			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 266				mPresenceParser.parseConferencePresence(packet, account);
 267			} else {
 268				mPresenceParser.parseContactPresence(packet,account);
 269			}
 270		}
 271	};
 272
 273	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 274
 275		@Override
 276		public void onIqPacketReceived(Account account, IqPacket packet) {
 277			if (packet.hasChild("query", "jabber:iq:roster")) {
 278				String from = packet.getFrom();
 279				if ((from == null) || (from.equals(account.getJid()))) {
 280					Element query = packet.findChild("query");
 281					processRosterItems(account, query);
 282				} else {
 283					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 284				}
 285			} else if (packet
 286					.hasChild("open", "http://jabber.org/protocol/ibb")
 287					|| packet
 288							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 289				XmppConnectionService.this.mJingleConnectionManager
 290						.deliverIbbPacket(account, packet);
 291			} else if (packet.hasChild("query",
 292					"http://jabber.org/protocol/disco#info")) {
 293				IqPacket iqResponse = packet
 294						.generateRespone(IqPacket.TYPE_RESULT);
 295				Element query = iqResponse.addChild("query",
 296						"http://jabber.org/protocol/disco#info");
 297				query.addChild("feature").setAttribute("var",
 298						"urn:xmpp:jingle:1");
 299				query.addChild("feature").setAttribute("var",
 300						"urn:xmpp:jingle:apps:file-transfer:3");
 301				query.addChild("feature").setAttribute("var",
 302						"urn:xmpp:jingle:transports:s5b:1");
 303				query.addChild("feature").setAttribute("var",
 304						"urn:xmpp:jingle:transports:ibb:1");
 305				if (confirmMessages()) {
 306					query.addChild("feature").setAttribute("var",
 307							"urn:xmpp:receipts");
 308				}
 309				account.getXmppConnection().sendIqPacket(iqResponse, null);
 310			} else {
 311				if ((packet.getType() == IqPacket.TYPE_GET)
 312						|| (packet.getType() == IqPacket.TYPE_SET)) {
 313					IqPacket response = packet
 314							.generateRespone(IqPacket.TYPE_ERROR);
 315					Element error = response.addChild("error");
 316					error.setAttribute("type", "cancel");
 317					error.addChild("feature-not-implemented",
 318							"urn:ietf:params:xml:ns:xmpp-stanzas");
 319					account.getXmppConnection().sendIqPacket(response, null);
 320				}
 321			}
 322		}
 323	};
 324
 325	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 326
 327		@Override
 328		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 329			mJingleConnectionManager.deliverPacket(account, packet);
 330		}
 331	};
 332
 333	private OpenPgpServiceConnection pgpServiceConnection;
 334	private PgpEngine mPgpEngine = null;
 335	private Intent pingIntent;
 336	private PendingIntent pendingPingIntent = null;
 337	private WakeLock wakeLock;
 338	private PowerManager pm;
 339
 340	public PgpEngine getPgpEngine() {
 341		if (pgpServiceConnection.isBound()) {
 342			if (this.mPgpEngine == null) {
 343				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 344						getApplicationContext(),
 345						pgpServiceConnection.getService()), this);
 346			}
 347			return mPgpEngine;
 348		} else {
 349			return null;
 350		}
 351
 352	}
 353
 354	public FileBackend getFileBackend() {
 355		return this.fileBackend;
 356	}
 357
 358	public Message attachImageToConversation(final Conversation conversation,
 359			final Uri uri, final UiCallback<Message> callback) {
 360		final Message message;
 361		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 362			message = new Message(conversation, "",
 363					Message.ENCRYPTION_DECRYPTED);
 364		} else {
 365			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 366		}
 367		message.setPresence(conversation.getNextPresence());
 368		message.setType(Message.TYPE_IMAGE);
 369		message.setStatus(Message.STATUS_OFFERED);
 370		new Thread(new Runnable() {
 371
 372			@Override
 373			public void run() {
 374				try {
 375					getFileBackend().copyImageToPrivateStorage(message, uri);
 376					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 377						getPgpEngine().encrypt(message, callback);
 378					} else {
 379						callback.success(message);
 380					}
 381				} catch (FileBackend.ImageCopyException e) {
 382					callback.error(e.getResId(),message);
 383				}
 384			}
 385		}).start();
 386		return message;
 387	}
 388
 389	public Conversation findMuc(String name, Account account) {
 390		for (Conversation conversation : this.conversations) {
 391			if (conversation.getContactJid().split("/")[0].equals(name)
 392					&& (conversation.getAccount() == account)) {
 393				return conversation;
 394			}
 395		}
 396		return null;
 397	}
 398
 399	private void processRosterItems(Account account, Element elements) {
 400		String version = elements.getAttribute("ver");
 401		if (version != null) {
 402			account.getRoster().setVersion(version);
 403		}
 404		for (Element item : elements.getChildren()) {
 405			if (item.getName().equals("item")) {
 406				String jid = item.getAttribute("jid");
 407				String name = item.getAttribute("name");
 408				String subscription = item.getAttribute("subscription");
 409				Contact contact = account.getRoster().getContact(jid);
 410				if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
 411					contact.setServerName(name);
 412				}
 413				if (subscription.equals("remove")) {
 414					contact.resetOption(Contact.Options.IN_ROSTER);
 415					contact.resetOption(Contact.Options.DIRTY_DELETE);
 416				} else {
 417					contact.setOption(Contact.Options.IN_ROSTER);
 418					contact.parseSubscriptionFromElement(item);
 419				}
 420			}
 421		}
 422	}
 423
 424	public class XmppConnectionBinder extends Binder {
 425		public XmppConnectionService getService() {
 426			return XmppConnectionService.this;
 427		}
 428	}
 429
 430	@Override
 431	public int onStartCommand(Intent intent, int flags, int startId) {
 432		if ((intent != null)
 433				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 434			mergePhoneContactsWithRoster();
 435			return START_STICKY;
 436		} else if ((intent != null)
 437				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 438			logoutAndSave();
 439			return START_NOT_STICKY;
 440		}
 441		this.wakeLock.acquire();
 442		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 443				.getSystemService(Context.CONNECTIVITY_SERVICE);
 444		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 445		boolean isConnected = activeNetwork != null
 446				&& activeNetwork.isConnected();
 447
 448		for (Account account : accounts) {
 449			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 450				if (!isConnected) {
 451					account.setStatus(Account.STATUS_NO_INTERNET);
 452					if (statusListener != null) {
 453						statusListener.onStatusChanged(account);
 454					}
 455				} else {
 456					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 457						account.setStatus(Account.STATUS_OFFLINE);
 458						if (statusListener != null) {
 459							statusListener.onStatusChanged(account);
 460						}
 461					}
 462					if (account.getStatus() == Account.STATUS_ONLINE) {
 463						long lastReceived = account.getXmppConnection().lastPaketReceived;
 464						long lastSent = account.getXmppConnection().lastPingSent;
 465						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 466							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 467							this.reconnectAccount(account, true);
 468						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 469							account.getXmppConnection().sendPing();
 470							account.getXmppConnection().lastPingSent = SystemClock
 471									.elapsedRealtime();
 472							this.scheduleWakeupCall(2, false);
 473						}
 474					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 475						if (account.getXmppConnection() == null) {
 476							account.setXmppConnection(this
 477									.createConnection(account));
 478						}
 479						account.getXmppConnection().lastPingSent = SystemClock
 480								.elapsedRealtime();
 481						new Thread(account.getXmppConnection()).start();
 482					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 483							&& ((SystemClock.elapsedRealtime() - account
 484									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 485						Log.d(LOGTAG, account.getJid()
 486								+ ": time out during connect reconnecting");
 487						reconnectAccount(account, true);
 488					} else {
 489						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 490							reconnectAccount(account, true);
 491						}
 492					}
 493					// in any case. reschedule wakup call
 494					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 495				}
 496				if (accountChangedListener != null) {
 497					accountChangedListener.onAccountListChangedListener();
 498				}
 499			}
 500		}
 501		if (wakeLock.isHeld()) {
 502			wakeLock.release();
 503		}
 504		return START_STICKY;
 505	}
 506
 507	@Override
 508	public void onCreate() {
 509		ExceptionHelper.init(getApplicationContext());
 510		this.databaseBackend = DatabaseBackend
 511				.getInstance(getApplicationContext());
 512		this.fileBackend = new FileBackend(getApplicationContext());
 513		this.accounts = databaseBackend.getAccounts();
 514
 515		for (Account account : this.accounts) {
 516			this.databaseBackend.readRoster(account.getRoster());
 517		}
 518		this.mergePhoneContactsWithRoster();
 519		this.getConversations();
 520
 521		getContentResolver().registerContentObserver(
 522				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 523		this.pgpServiceConnection = new OpenPgpServiceConnection(
 524				getApplicationContext(), "org.sufficientlysecure.keychain");
 525		this.pgpServiceConnection.bindToService();
 526
 527		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 528		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 529				"XmppConnectionService");
 530	}
 531
 532	@Override
 533	public void onDestroy() {
 534		super.onDestroy();
 535		this.logoutAndSave();
 536	}
 537
 538	@Override
 539	public void onTaskRemoved(Intent rootIntent) {
 540		super.onTaskRemoved(rootIntent);
 541		this.logoutAndSave();
 542	}
 543
 544	private void logoutAndSave() {
 545		for (Account account : accounts) {
 546			databaseBackend.writeRoster(account.getRoster());
 547			if (account.getXmppConnection() != null) {
 548				disconnect(account, false);
 549			}
 550		}
 551		Context context = getApplicationContext();
 552		AlarmManager alarmManager = (AlarmManager) context
 553				.getSystemService(Context.ALARM_SERVICE);
 554		Intent intent = new Intent(context, EventReceiver.class);
 555		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 556		Log.d(LOGTAG, "good bye");
 557		stopSelf();
 558	}
 559
 560	protected void scheduleWakeupCall(int seconds, boolean ping) {
 561		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 562		Context context = getApplicationContext();
 563		AlarmManager alarmManager = (AlarmManager) context
 564				.getSystemService(Context.ALARM_SERVICE);
 565
 566		if (ping) {
 567			if (this.pingIntent == null) {
 568				this.pingIntent = new Intent(context, EventReceiver.class);
 569				this.pingIntent.setAction("ping");
 570				this.pingIntent.putExtra("time", timeToWake);
 571				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 572						this.pingIntent, 0);
 573				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 574						timeToWake, pendingPingIntent);
 575			} else {
 576				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 577				if (scheduledTime < SystemClock.elapsedRealtime()
 578						|| (scheduledTime > timeToWake)) {
 579					this.pingIntent.putExtra("time", timeToWake);
 580					alarmManager.cancel(this.pendingPingIntent);
 581					this.pendingPingIntent = PendingIntent.getBroadcast(
 582							context, 0, this.pingIntent, 0);
 583					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 584							timeToWake, pendingPingIntent);
 585				}
 586			}
 587		} else {
 588			Intent intent = new Intent(context, EventReceiver.class);
 589			intent.setAction("ping_check");
 590			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 591					intent, 0);
 592			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 593					alarmIntent);
 594		}
 595
 596	}
 597
 598	public XmppConnection createConnection(Account account) {
 599		SharedPreferences sharedPref = getPreferences();
 600		account.setResource(sharedPref.getString("resource", "mobile")
 601				.toLowerCase(Locale.getDefault()));
 602		XmppConnection connection = new XmppConnection(account, this.pm);
 603		connection.setOnMessagePacketReceivedListener(this.messageListener);
 604		connection.setOnStatusChangedListener(this.statusListener);
 605		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 606		connection
 607				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 608		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 609		connection
 610				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 611
 612					@Override
 613					public void onTLSExceptionReceived(String fingerprint,
 614							Account account) {
 615						Log.d(LOGTAG, "tls exception arrived in service");
 616						if (tlsException != null) {
 617							tlsException.onTLSExceptionReceived(fingerprint,
 618									account);
 619						}
 620					}
 621				});
 622		connection.setOnBindListener(new OnBindListener() {
 623
 624			@Override
 625			public void onBind(final Account account) {
 626				account.getRoster().clearPresences();
 627				account.clearPresences(); // self presences
 628				fetchRosterFromServer(account);
 629				sendPresence(account);
 630				connectMultiModeConversations(account);
 631				if (convChangedListener != null) {
 632					convChangedListener.onConversationListChanged();
 633				}
 634			}
 635		});
 636		return connection;
 637	}
 638
 639	synchronized public void sendMessage(Message message, String presence) {
 640		Account account = message.getConversation().getAccount();
 641		Conversation conv = message.getConversation();
 642		MessagePacket packet = null;
 643		boolean saveInDb = false;
 644		boolean addToConversation = false;
 645		boolean send = false;
 646		if (account.getStatus() == Account.STATUS_ONLINE) {
 647			if (message.getType() == Message.TYPE_IMAGE) {
 648				mJingleConnectionManager.createNewConnection(message);
 649			} else {
 650				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 651					if (!conv.hasValidOtrSession()) {
 652						// starting otr session. messages will be send later
 653						conv.startOtrSession(getApplicationContext(), presence,
 654								true);
 655					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 656						// otr session aleary exists, creating message packet
 657						// accordingly
 658						packet = prepareMessagePacket(account, message,
 659								conv.getOtrSession());
 660						send = true;
 661						message.setStatus(Message.STATUS_SEND);
 662					}
 663					saveInDb = true;
 664					addToConversation = true;
 665				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 666					message.getConversation().endOtrIfNeeded();
 667					packet = prepareMessagePacket(account, message, null);
 668					packet.setBody("This is an XEP-0027 encryted message");
 669					packet.addChild("x", "jabber:x:encrypted").setContent(
 670							message.getEncryptedBody());
 671					message.setStatus(Message.STATUS_SEND);
 672					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 673					saveInDb = true;
 674					addToConversation = true;
 675					send = true;
 676				} else {
 677					message.getConversation().endOtrIfNeeded();
 678					// don't encrypt
 679					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 680						message.setStatus(Message.STATUS_SEND);
 681					}
 682					packet = prepareMessagePacket(account, message, null);
 683					send = true;
 684					saveInDb = true;
 685					addToConversation = true;
 686				}
 687			}
 688		} else {
 689			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 690				String pgpBody = message.getEncryptedBody();
 691				String decryptedBody = message.getBody();
 692				message.setBody(pgpBody);
 693				databaseBackend.createMessage(message);
 694				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 695				message.setBody(decryptedBody);
 696				addToConversation = true;
 697			} else {
 698				saveInDb = true;
 699				addToConversation = true;
 700			}
 701
 702		}
 703		if (saveInDb) {
 704			databaseBackend.createMessage(message);
 705		}
 706		if (addToConversation) {
 707			conv.getMessages().add(message);
 708			if (convChangedListener != null) {
 709				convChangedListener.onConversationListChanged();
 710			}
 711		}
 712		if ((send) && (packet != null)) {
 713			account.getXmppConnection().sendMessagePacket(packet);
 714		}
 715
 716	}
 717
 718	private void sendUnsendMessages(Conversation conversation) {
 719		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 720			if (conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND) {
 721				resendMessage(conversation.getMessages().get(i));
 722			}
 723		}
 724	}
 725
 726	private void resendMessage(Message message) {
 727		Account account = message.getConversation().getAccount();
 728		if (message.getType() == Message.TYPE_TEXT) {
 729			MessagePacket packet = null;
 730			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 731				packet = prepareMessagePacket(account, message, null);
 732			} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 733				packet = prepareMessagePacket(account, message, null);
 734				packet.setBody("This is an XEP-0027 encryted message");
 735				if (message.getEncryptedBody() == null) {
 736					markMessage(message, Message.STATUS_SEND_FAILED);
 737					return;
 738				}
 739				packet.addChild("x", "jabber:x:encrypted").setContent(
 740						message.getEncryptedBody());
 741			} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 742				packet = prepareMessagePacket(account, message, null);
 743				packet.setBody("This is an XEP-0027 encryted message");
 744				packet.addChild("x", "jabber:x:encrypted").setContent(
 745						message.getBody());
 746			}
 747			if (packet != null) {
 748				account.getXmppConnection().sendMessagePacket(packet);
 749				markMessage(message, Message.STATUS_SEND);
 750			}
 751		} else if (message.getType() == Message.TYPE_IMAGE) {
 752			//TODO: send images
 753		}
 754	}
 755
 756	public MessagePacket prepareMessagePacket(Account account, Message message,
 757			Session otrSession) {
 758		MessagePacket packet = new MessagePacket();
 759		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 760			packet.setType(MessagePacket.TYPE_CHAT);
 761			if (otrSession != null) {
 762				try {
 763					packet.setBody(otrSession.transformSending(message
 764							.getBody()));
 765				} catch (OtrException e) {
 766					Log.d(LOGTAG,
 767							account.getJid()
 768									+ ": could not encrypt message to "
 769									+ message.getCounterpart());
 770				}
 771				packet.addChild("private", "urn:xmpp:carbons:2");
 772				packet.addChild("no-copy", "urn:xmpp:hints");
 773				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 774						+ otrSession.getSessionID().getUserID());
 775				packet.setFrom(account.getFullJid());
 776			} else {
 777				packet.setBody(message.getBody());
 778				packet.setTo(message.getCounterpart());
 779				packet.setFrom(account.getJid());
 780			}
 781			packet.addChild("markable", "urn:xmpp:chat-markers:0");
 782		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 783			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 784			packet.setBody(message.getBody());
 785			packet.setTo(message.getCounterpart().split("/")[0]);
 786			packet.setFrom(account.getJid());
 787		}
 788		packet.setId(message.getUuid());
 789		return packet;
 790	}
 791
 792	public void fetchRosterFromServer(Account account) {
 793		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 794		if (!"".equals(account.getRosterVersion())) {
 795			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 796					+ account.getRosterVersion());
 797		} else {
 798			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 799		}
 800		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 801				account.getRosterVersion());
 802		account.getXmppConnection().sendIqPacket(iqPacket,
 803				new OnIqPacketReceived() {
 804
 805					@Override
 806					public void onIqPacketReceived(final Account account,
 807							IqPacket packet) {
 808						Element roster = packet.findChild("query");
 809						if (roster != null) {
 810							account.getRoster().markAllAsNotInRoster();
 811							processRosterItems(account, roster);
 812						}
 813					}
 814				});
 815	}
 816
 817	private void mergePhoneContactsWithRoster() {
 818		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 819				new OnPhoneContactsLoadedListener() {
 820					@Override
 821					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 822						for (Account account : accounts) {
 823							account.getRoster().clearSystemAccounts();
 824						}
 825						for (Bundle phoneContact : phoneContacts) {
 826							for (Account account : accounts) {
 827								String jid = phoneContact.getString("jid");
 828								Contact contact = account.getRoster()
 829										.getContact(jid);
 830								String systemAccount = phoneContact
 831										.getInt("phoneid")
 832										+ "#"
 833										+ phoneContact.getString("lookup");
 834								contact.setSystemAccount(systemAccount);
 835								contact.setPhotoUri(phoneContact
 836										.getString("photouri"));
 837								contact.setSystemName(phoneContact
 838										.getString("displayname"));
 839							}
 840						}
 841					}
 842				});
 843	}
 844
 845	public List<Conversation> getConversations() {
 846		if (this.conversations == null) {
 847			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 848			for (Account account : this.accounts) {
 849				accountLookupTable.put(account.getUuid(), account);
 850			}
 851			this.conversations = databaseBackend
 852					.getConversations(Conversation.STATUS_AVAILABLE);
 853			for (Conversation conv : this.conversations) {
 854				Account account = accountLookupTable.get(conv.getAccountUuid());
 855				conv.setAccount(account);
 856				conv.setMessages(databaseBackend.getMessages(conv, 50));
 857			}
 858		}
 859		Collections.sort(this.conversations, new Comparator<Conversation>() {
 860			@Override
 861			public int compare(Conversation lhs, Conversation rhs) {
 862				Message left = lhs.getLatestMessage();
 863				Message right = rhs.getLatestMessage();
 864				if (left.getTimeSent() > right.getTimeSent()) {
 865					return -1;
 866				} else if (left.getTimeSent() < right.getTimeSent()) {
 867					return 1;
 868				} else {
 869					return 0;
 870				}
 871			}
 872		});
 873		return this.conversations;
 874	}
 875
 876	public List<Account> getAccounts() {
 877		return this.accounts;
 878	}
 879
 880	public Conversation findActiveConversation(Contact contact) {
 881		for (Conversation conversation : this.getConversations()) {
 882			if (conversation.getContact() == contact) {
 883				return conversation;
 884			}
 885		}
 886		return null;
 887	}
 888
 889	public Conversation findOrCreateConversation(Account account, String jid,
 890			boolean muc) {
 891		for (Conversation conv : this.getConversations()) {
 892			if ((conv.getAccount().equals(account))
 893					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 894				return conv;
 895			}
 896		}
 897		Conversation conversation = databaseBackend.findConversation(account,
 898				jid);
 899		if (conversation != null) {
 900			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 901			conversation.setAccount(account);
 902			if (muc) {
 903				conversation.setMode(Conversation.MODE_MULTI);
 904			} else {
 905				conversation.setMode(Conversation.MODE_SINGLE);
 906			}
 907			conversation.setMessages(databaseBackend.getMessages(conversation,
 908					50));
 909			this.databaseBackend.updateConversation(conversation);
 910		} else {
 911			String conversationName;
 912			Contact contact = account.getRoster().getContact(jid);
 913			if (contact != null) {
 914				conversationName = contact.getDisplayName();
 915			} else {
 916				conversationName = jid.split("@")[0];
 917			}
 918			if (muc) {
 919				conversation = new Conversation(conversationName, account, jid,
 920						Conversation.MODE_MULTI);
 921			} else {
 922				conversation = new Conversation(conversationName, account, jid,
 923						Conversation.MODE_SINGLE);
 924			}
 925			this.databaseBackend.createConversation(conversation);
 926		}
 927		this.conversations.add(conversation);
 928		if ((account.getStatus() == Account.STATUS_ONLINE)
 929				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
 930			joinMuc(conversation);
 931		}
 932		if (this.convChangedListener != null) {
 933			this.convChangedListener.onConversationListChanged();
 934		}
 935		return conversation;
 936	}
 937
 938	public void archiveConversation(Conversation conversation) {
 939		if (conversation.getMode() == Conversation.MODE_MULTI) {
 940			leaveMuc(conversation);
 941		} else {
 942			conversation.endOtrIfNeeded();
 943		}
 944		this.databaseBackend.updateConversation(conversation);
 945		this.conversations.remove(conversation);
 946		if (this.convChangedListener != null) {
 947			this.convChangedListener.onConversationListChanged();
 948		}
 949	}
 950
 951	public void clearConversationHistory(Conversation conversation) {
 952		this.databaseBackend.deleteMessagesInConversation(conversation);
 953		this.fileBackend.removeFiles(conversation);
 954		conversation.getMessages().clear();
 955		if (this.convChangedListener != null) {
 956			this.convChangedListener.onConversationListChanged();
 957		}
 958	}
 959
 960	public int getConversationCount() {
 961		return this.databaseBackend.getConversationCount();
 962	}
 963
 964	public void createAccount(Account account) {
 965		databaseBackend.createAccount(account);
 966		this.accounts.add(account);
 967		this.reconnectAccount(account, false);
 968		if (accountChangedListener != null)
 969			accountChangedListener.onAccountListChangedListener();
 970	}
 971
 972	public void updateAccount(Account account) {
 973		this.statusListener.onStatusChanged(account);
 974		databaseBackend.updateAccount(account);
 975		reconnectAccount(account, false);
 976		if (accountChangedListener != null) {
 977			accountChangedListener.onAccountListChangedListener();
 978		}
 979		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 980	}
 981
 982	public void deleteAccount(Account account) {
 983		if (account.getXmppConnection() != null) {
 984			this.disconnect(account, true);
 985		}
 986		databaseBackend.deleteAccount(account);
 987		this.accounts.remove(account);
 988		if (accountChangedListener != null) {
 989			accountChangedListener.onAccountListChangedListener();
 990		}
 991		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 992	}
 993
 994	public void setOnConversationListChangedListener(
 995			OnConversationListChangedListener listener) {
 996		this.convChangedListener = listener;
 997		this.convChangedListenerCount++;
 998	}
 999
1000	public void removeOnConversationListChangedListener() {
1001		this.convChangedListenerCount--;
1002		if (this.convChangedListenerCount == 0) {
1003			this.convChangedListener = null;
1004		}
1005	}
1006
1007	public void setOnAccountListChangedListener(
1008			OnAccountListChangedListener listener) {
1009		this.accountChangedListener = listener;
1010	}
1011
1012	public void removeOnAccountListChangedListener() {
1013		this.accountChangedListener = null;
1014	}
1015
1016	public void connectMultiModeConversations(Account account) {
1017		List<Conversation> conversations = getConversations();
1018		for (int i = 0; i < conversations.size(); i++) {
1019			Conversation conversation = conversations.get(i);
1020			if ((conversation.getMode() == Conversation.MODE_MULTI)
1021					&& (conversation.getAccount() == account)) {
1022				joinMuc(conversation);
1023			}
1024		}
1025	}
1026
1027	public void joinMuc(Conversation conversation) {
1028		Account account = conversation.getAccount();
1029		String[] mucParts = conversation.getContactJid().split("/");
1030		String muc;
1031		String nick;
1032		if (mucParts.length == 2) {
1033			muc = mucParts[0];
1034			nick = mucParts[1];
1035		} else {
1036			muc = mucParts[0];
1037			nick = account.getUsername();
1038		}
1039		PresencePacket packet = new PresencePacket();
1040		packet.setAttribute("to", muc + "/" + nick);
1041		Element x = new Element("x");
1042		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1043		String sig = account.getPgpSignature();
1044		if (sig != null) {
1045			packet.addChild("status").setContent("online");
1046			packet.addChild("x", "jabber:x:signed").setContent(sig);
1047		}
1048		if (conversation.getMessages().size() != 0) {
1049			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1050			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1051			x.addChild("history").setAttribute("seconds", diff + "");
1052		}
1053		packet.addChild(x);
1054		account.getXmppConnection().sendPresencePacket(packet);
1055	}
1056
1057	private OnRenameListener renameListener = null;
1058
1059	public void setOnRenameListener(OnRenameListener listener) {
1060		this.renameListener = listener;
1061	}
1062
1063	public void renameInMuc(final Conversation conversation, final String nick) {
1064		final MucOptions options = conversation.getMucOptions();
1065		if (options.online()) {
1066			Account account = conversation.getAccount();
1067			options.setOnRenameListener(new OnRenameListener() {
1068
1069				@Override
1070				public void onRename(boolean success) {
1071					if (renameListener != null) {
1072						renameListener.onRename(success);
1073					}
1074					if (success) {
1075						String jid = conversation.getContactJid().split("/")[0]
1076								+ "/" + nick;
1077						conversation.setContactJid(jid);
1078						databaseBackend.updateConversation(conversation);
1079					}
1080				}
1081			});
1082			options.flagAboutToRename();
1083			PresencePacket packet = new PresencePacket();
1084			packet.setAttribute("to",
1085					conversation.getContactJid().split("/")[0] + "/" + nick);
1086			packet.setAttribute("from", conversation.getAccount().getFullJid());
1087
1088			String sig = account.getPgpSignature();
1089			if (sig != null) {
1090				packet.addChild("status").setContent("online");
1091				packet.addChild("x", "jabber:x:signed").setContent(sig);
1092			}
1093
1094			account.getXmppConnection().sendPresencePacket(packet, null);
1095		} else {
1096			String jid = conversation.getContactJid().split("/")[0] + "/"
1097					+ nick;
1098			conversation.setContactJid(jid);
1099			databaseBackend.updateConversation(conversation);
1100			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1101				joinMuc(conversation);
1102			}
1103		}
1104	}
1105
1106	public void leaveMuc(Conversation conversation) {
1107		PresencePacket packet = new PresencePacket();
1108		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1109				+ "/" + conversation.getMucOptions().getNick());
1110		packet.setAttribute("from", conversation.getAccount().getFullJid());
1111		packet.setAttribute("type", "unavailable");
1112		Log.d(LOGTAG, "send leaving muc " + packet);
1113		conversation.getAccount().getXmppConnection()
1114				.sendPresencePacket(packet);
1115		conversation.getMucOptions().setOffline();
1116	}
1117
1118	public void disconnect(Account account, boolean force) {
1119		if ((account.getStatus() == Account.STATUS_ONLINE)
1120				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1121			if (!force) {
1122				List<Conversation> conversations = getConversations();
1123				for (int i = 0; i < conversations.size(); i++) {
1124					Conversation conversation = conversations.get(i);
1125					if (conversation.getAccount() == account) {
1126						if (conversation.getMode() == Conversation.MODE_MULTI) {
1127							leaveMuc(conversation);
1128						} else {
1129							conversation.endOtrIfNeeded();
1130						}
1131					}
1132				}
1133			}
1134			account.getXmppConnection().disconnect(force);
1135		}
1136	}
1137
1138	@Override
1139	public IBinder onBind(Intent intent) {
1140		return mBinder;
1141	}
1142
1143	public void updateMessage(Message message) {
1144		databaseBackend.updateMessage(message);
1145	}
1146
1147	protected void syncDirtyContacts(Account account) {
1148		for (Contact contact : account.getRoster().getContacts()) {
1149			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1150				pushContactToServer(contact);
1151			}
1152			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1153				Log.d(LOGTAG, "dirty delete");
1154				deleteContactOnServer(contact);
1155			}
1156		}
1157	}
1158
1159	public void createContact(Contact contact) {
1160		SharedPreferences sharedPref = getPreferences();
1161		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1162		if (autoGrant) {
1163			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1164			contact.setOption(Contact.Options.ASKING);
1165		}
1166		pushContactToServer(contact);
1167	}
1168
1169	public void pushContactToServer(Contact contact) {
1170		contact.resetOption(Contact.Options.DIRTY_DELETE);
1171		Account account = contact.getAccount();
1172		if (account.getStatus() == Account.STATUS_ONLINE) {
1173			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1174			iq.query("jabber:iq:roster").addChild(contact.asElement());
1175			account.getXmppConnection().sendIqPacket(iq, null);
1176			if (contact.getOption(Contact.Options.ASKING)) {
1177				requestPresenceUpdatesFrom(contact);
1178			}
1179			if (contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1180				Log.d("xmppService", "contact had pending subscription");
1181				sendPresenceUpdatesTo(contact);
1182			}
1183			contact.resetOption(Contact.Options.DIRTY_PUSH);
1184		} else {
1185			contact.setOption(Contact.Options.DIRTY_PUSH);
1186		}
1187	}
1188
1189	public void deleteContactOnServer(Contact contact) {
1190		contact.resetOption(Contact.Options.DIRTY_PUSH);
1191		Account account = contact.getAccount();
1192		if (account.getStatus() == Account.STATUS_ONLINE) {
1193			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1194			Element item = iq.query("jabber:iq:roster").addChild("item");
1195			item.setAttribute("jid", contact.getJid());
1196			item.setAttribute("subscription", "remove");
1197			account.getXmppConnection().sendIqPacket(iq, null);
1198			contact.resetOption(Contact.Options.DIRTY_DELETE);
1199		} else {
1200			contact.setOption(Contact.Options.DIRTY_DELETE);
1201		}
1202	}
1203
1204	public void requestPresenceUpdatesFrom(Contact contact) {
1205		PresencePacket packet = new PresencePacket();
1206		packet.setAttribute("type", "subscribe");
1207		packet.setAttribute("to", contact.getJid());
1208		packet.setAttribute("from", contact.getAccount().getJid());
1209		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1210	}
1211
1212	public void stopPresenceUpdatesFrom(Contact contact) {
1213		PresencePacket packet = new PresencePacket();
1214		packet.setAttribute("type", "unsubscribe");
1215		packet.setAttribute("to", contact.getJid());
1216		packet.setAttribute("from", contact.getAccount().getJid());
1217		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1218	}
1219
1220	public void stopPresenceUpdatesTo(Contact contact) {
1221		PresencePacket packet = new PresencePacket();
1222		packet.setAttribute("type", "unsubscribed");
1223		packet.setAttribute("to", contact.getJid());
1224		packet.setAttribute("from", contact.getAccount().getJid());
1225		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1226	}
1227
1228	public void sendPresenceUpdatesTo(Contact contact) {
1229		PresencePacket packet = new PresencePacket();
1230		packet.setAttribute("type", "subscribed");
1231		packet.setAttribute("to", contact.getJid());
1232		packet.setAttribute("from", contact.getAccount().getJid());
1233		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1234	}
1235
1236	public void sendPresence(Account account) {
1237		PresencePacket packet = new PresencePacket();
1238		packet.setAttribute("from", account.getFullJid());
1239		String sig = account.getPgpSignature();
1240		if (sig != null) {
1241			packet.addChild("status").setContent("online");
1242			packet.addChild("x", "jabber:x:signed").setContent(sig);
1243		}
1244		account.getXmppConnection().sendPresencePacket(packet);
1245	}
1246
1247	public void updateConversation(Conversation conversation) {
1248		this.databaseBackend.updateConversation(conversation);
1249	}
1250
1251	public void removeOnTLSExceptionReceivedListener() {
1252		this.tlsException = null;
1253	}
1254
1255	public void reconnectAccount(final Account account, final boolean force) {
1256		new Thread(new Runnable() {
1257
1258			@Override
1259			public void run() {
1260				if (account.getXmppConnection() != null) {
1261					disconnect(account, force);
1262				}
1263				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1264					if (account.getXmppConnection() == null) {
1265						account.setXmppConnection(createConnection(account));
1266					}
1267					Thread thread = new Thread(account.getXmppConnection());
1268					thread.start();
1269					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1270				}
1271			}
1272		}).start();
1273	}
1274
1275	public void sendConversationSubject(Conversation conversation,
1276			String subject) {
1277		MessagePacket packet = new MessagePacket();
1278		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1279		packet.setTo(conversation.getContactJid().split("/")[0]);
1280		Element subjectChild = new Element("subject");
1281		subjectChild.setContent(subject);
1282		packet.addChild(subjectChild);
1283		packet.setFrom(conversation.getAccount().getJid());
1284		Account account = conversation.getAccount();
1285		if (account.getStatus() == Account.STATUS_ONLINE) {
1286			account.getXmppConnection().sendMessagePacket(packet);
1287		}
1288	}
1289
1290	public void inviteToConference(Conversation conversation,
1291			List<Contact> contacts) {
1292		for (Contact contact : contacts) {
1293			MessagePacket packet = new MessagePacket();
1294			packet.setTo(conversation.getContactJid().split("/")[0]);
1295			packet.setFrom(conversation.getAccount().getFullJid());
1296			Element x = new Element("x");
1297			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1298			Element invite = new Element("invite");
1299			invite.setAttribute("to", contact.getJid());
1300			x.addChild(invite);
1301			packet.addChild(x);
1302			Log.d(LOGTAG, packet.toString());
1303			conversation.getAccount().getXmppConnection()
1304					.sendMessagePacket(packet);
1305		}
1306
1307	}
1308
1309	public boolean markMessage(Account account, String recipient, String uuid,
1310			int status) {
1311		for (Conversation conversation : getConversations()) {
1312			if (conversation.getContactJid().equals(recipient)
1313					&& conversation.getAccount().equals(account)) {
1314				return markMessage(conversation, uuid, status);
1315			}
1316		}
1317		return false;
1318	}
1319
1320	public boolean markMessage(Conversation conversation, String uuid,
1321			int status) {
1322		for (Message message : conversation.getMessages()) {
1323			if (message.getUuid().equals(uuid)) {
1324				markMessage(message, status);
1325				return true;
1326			}
1327		}
1328		return false;
1329	}
1330
1331	public void markMessage(Message message, int status) {
1332		message.setStatus(status);
1333		databaseBackend.updateMessage(message);
1334		if (convChangedListener != null) {
1335			convChangedListener.onConversationListChanged();
1336		}
1337	}
1338
1339	public SharedPreferences getPreferences() {
1340		return PreferenceManager
1341				.getDefaultSharedPreferences(getApplicationContext());
1342	}
1343
1344	public boolean confirmMessages() {
1345		return getPreferences().getBoolean("confirm_messages", true);
1346	}
1347
1348	public void updateUi(Conversation conversation, boolean notify) {
1349		if (convChangedListener != null) {
1350			convChangedListener.onConversationListChanged();
1351		} else {
1352			UIHelper.updateNotification(getApplicationContext(),
1353					getConversations(), conversation, notify);
1354		}
1355	}
1356
1357	public Account findAccountByJid(String accountJid) {
1358		for (Account account : this.accounts) {
1359			if (account.getJid().equals(accountJid)) {
1360				return account;
1361			}
1362		}
1363		return null;
1364	}
1365
1366	public void markRead(Conversation conversation) {
1367		conversation.markRead(this);
1368	}
1369
1370	public void sendConfirmMessage(Account account, String to, String id) {
1371		MessagePacket receivedPacket = new MessagePacket();
1372		receivedPacket.setType(MessagePacket.TYPE_NORMAL);
1373		receivedPacket.setTo(to);
1374		receivedPacket.setFrom(account.getFullJid());
1375		Element received = receivedPacket.addChild("displayed",
1376				"urn:xmpp:chat-markers:0");
1377		received.setAttribute("id", id);
1378		account.getXmppConnection().sendMessagePacket(receivedPacket);
1379	}
1380}