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.entities.Presences;
  24import eu.siacs.conversations.parser.MessageParser;
  25import eu.siacs.conversations.parser.PresenceParser;
  26import eu.siacs.conversations.persistance.DatabaseBackend;
  27import eu.siacs.conversations.persistance.FileBackend;
  28import eu.siacs.conversations.ui.OnAccountListChangedListener;
  29import eu.siacs.conversations.ui.OnConversationListChangedListener;
  30import eu.siacs.conversations.ui.UiCallback;
  31import eu.siacs.conversations.utils.ExceptionHelper;
  32import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  33import eu.siacs.conversations.utils.PhoneHelper;
  34import eu.siacs.conversations.utils.UIHelper;
  35import eu.siacs.conversations.xml.Element;
  36import eu.siacs.conversations.xmpp.OnBindListener;
  37import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  38import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  39import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  40import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  41import eu.siacs.conversations.xmpp.OnStatusChanged;
  42import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  43import eu.siacs.conversations.xmpp.XmppConnection;
  44import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  45import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  46import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  47import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  48import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  49import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  50import android.app.AlarmManager;
  51import android.app.PendingIntent;
  52import android.app.Service;
  53import android.content.Context;
  54import android.content.Intent;
  55import android.content.SharedPreferences;
  56import android.database.ContentObserver;
  57import android.net.ConnectivityManager;
  58import android.net.NetworkInfo;
  59import android.net.Uri;
  60import android.os.Binder;
  61import android.os.Bundle;
  62import android.os.IBinder;
  63import android.os.PowerManager;
  64import android.os.PowerManager.WakeLock;
  65import android.os.SystemClock;
  66import android.preference.PreferenceManager;
  67import android.provider.ContactsContract;
  68import android.util.Log;
  69
  70public class XmppConnectionService extends Service {
  71
  72	protected static final String LOGTAG = "xmppService";
  73	public DatabaseBackend databaseBackend;
  74	private FileBackend fileBackend;
  75
  76	public long startDate;
  77
  78	private static final int PING_MAX_INTERVAL = 300;
  79	private static final int PING_MIN_INTERVAL = 10;
  80	private static final int PING_TIMEOUT = 5;
  81	private static final int CONNECT_TIMEOUT = 60;
  82	private static final long CARBON_GRACE_PERIOD = 60000L;
  83
  84	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  85
  86	private MessageParser mMessageParser = new MessageParser(this);
  87	private PresenceParser mPresenceParser = new PresenceParser(this);
  88
  89	private List<Account> accounts;
  90	private List<Conversation> conversations = null;
  91	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
  92			this);
  93
  94	private OnConversationListChangedListener convChangedListener = null;
  95	private int convChangedListenerCount = 0;
  96	private OnAccountListChangedListener accountChangedListener = null;
  97	private OnTLSExceptionReceived tlsException = null;
  98	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
  99
 100		@Override
 101		public void onContactStatusChanged(Contact contact, boolean online) {
 102			Conversation conversation = findActiveConversation(contact);
 103			if (conversation != null) {
 104				conversation.endOtrIfNeeded();
 105				if (online && (contact.getPresences().size() == 1)) {
 106					sendUnsendMessages(conversation);
 107				}
 108			}
 109		}
 110	};
 111
 112	public void setOnTLSExceptionReceivedListener(
 113			OnTLSExceptionReceived listener) {
 114		tlsException = listener;
 115	}
 116
 117	private Random mRandom = new Random(System.currentTimeMillis());
 118
 119	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 120
 121	private ContentObserver contactObserver = new ContentObserver(null) {
 122		@Override
 123		public void onChange(boolean selfChange) {
 124			super.onChange(selfChange);
 125			Intent intent = new Intent(getApplicationContext(),
 126					XmppConnectionService.class);
 127			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 128			startService(intent);
 129		}
 130	};
 131
 132	private final IBinder mBinder = new XmppConnectionBinder();
 133	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 134
 135		@Override
 136		public void onMessagePacketReceived(Account account,
 137				MessagePacket packet) {
 138			Message message = null;
 139			boolean notify = true;
 140			if (getPreferences().getBoolean(
 141					"notification_grace_period_after_carbon_received", true)) {
 142				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 143			}
 144
 145			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 146				if ((packet.getBody() != null)
 147						&& (packet.getBody().startsWith("?OTR"))) {
 148					message = mMessageParser.parseOtrChat(packet, account);
 149					if (message != null) {
 150						message.markUnread();
 151					}
 152				} else if (packet.hasChild("body")) {
 153					message = mMessageParser.parseChat(packet, account);
 154					message.markUnread();
 155				} else if (packet.hasChild("received")
 156						|| (packet.hasChild("sent"))) {
 157					message = mMessageParser
 158							.parseCarbonMessage(packet, account);
 159					if (message != null) {
 160						if (message.getStatus() == Message.STATUS_SEND) {
 161							lastCarbonMessageReceived = SystemClock
 162									.elapsedRealtime();
 163							notify = false;
 164							message.getConversation().markRead();
 165						} else {
 166							message.markUnread();
 167						}
 168					}
 169				}
 170
 171			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 172				message = mMessageParser.parseGroupchat(packet, account);
 173				if (message != null) {
 174					if (message.getStatus() == Message.STATUS_RECIEVED) {
 175						message.markUnread();
 176					} else {
 177						message.getConversation().markRead();
 178						notify = false;
 179					}
 180				}
 181			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 182				mMessageParser.parseError(packet, account);
 183				return;
 184			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 185				mMessageParser.parseNormal(packet, account);
 186			}
 187			if ((message == null) || (message.getBody() == null)) {
 188				return;
 189			}
 190			if ((confirmMessages()) && ((packet.getId() != null))) {
 191				MessagePacket receivedPacket = new MessagePacket();
 192				receivedPacket.setType(MessagePacket.TYPE_NORMAL);
 193				receivedPacket.setTo(message.getCounterpart());
 194				receivedPacket.setFrom(account.getFullJid());
 195				if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
 196					Element received = receivedPacket.addChild("received",
 197							"urn:xmpp:chat-markers:0");
 198					received.setAttribute("id", packet.getId());
 199					account.getXmppConnection().sendMessagePacket(
 200							receivedPacket);
 201				} else if (packet.hasChild("request", "urn:xmpp:receipts")) {
 202					Element received = receivedPacket.addChild("received",
 203							"urn:xmpp:receipts");
 204					received.setAttribute("id", packet.getId());
 205					account.getXmppConnection().sendMessagePacket(
 206							receivedPacket);
 207				}
 208			}
 209			Conversation conversation = message.getConversation();
 210			conversation.getMessages().add(message);
 211			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 212				databaseBackend.createMessage(message);
 213			}
 214			if (convChangedListener != null) {
 215				convChangedListener.onConversationListChanged();
 216			} else {
 217				UIHelper.updateNotification(getApplicationContext(),
 218						getConversations(), message.getConversation(), notify);
 219			}
 220		}
 221	};
 222	private OnStatusChanged statusListener = new OnStatusChanged() {
 223
 224		@Override
 225		public void onStatusChanged(Account account) {
 226			if (accountChangedListener != null) {
 227				accountChangedListener.onAccountListChangedListener();
 228			}
 229			if (account.getStatus() == Account.STATUS_ONLINE) {
 230				List<Conversation> conversations = getConversations();
 231				for (int i = 0; i < conversations.size(); ++i) {
 232					if (conversations.get(i).getAccount() == account) {
 233						conversations.get(i).endOtrIfNeeded();
 234						sendUnsendMessages(conversations.get(i));
 235					}
 236				}
 237				syncDirtyContacts(account);
 238				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 239			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 240				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 241					int timeToReconnect = mRandom.nextInt(50) + 10;
 242					scheduleWakeupCall(timeToReconnect, false);
 243				}
 244
 245			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 246				databaseBackend.updateAccount(account);
 247				reconnectAccount(account, true);
 248			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 249					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 250				int next = account.getXmppConnection().getTimeToNextAttempt();
 251				Log.d(LOGTAG, account.getJid()
 252						+ ": error connecting account. try again in " + next
 253						+ "s for the "
 254						+ (account.getXmppConnection().getAttempt() + 1)
 255						+ " time");
 256				scheduleWakeupCall(next, false);
 257			}
 258			UIHelper.showErrorNotification(getApplicationContext(),
 259					getAccounts());
 260		}
 261	};
 262
 263	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 264
 265		@Override
 266		public void onPresencePacketReceived(final Account account,
 267				PresencePacket packet) {
 268			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 269				mPresenceParser.parseConferencePresence(packet, account);
 270			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 271				mPresenceParser.parseConferencePresence(packet, account);
 272			} else {
 273				mPresenceParser.parseContactPresence(packet, account);
 274			}
 275		}
 276	};
 277
 278	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 279
 280		@Override
 281		public void onIqPacketReceived(Account account, IqPacket packet) {
 282			if (packet.hasChild("query", "jabber:iq:roster")) {
 283				String from = packet.getFrom();
 284				if ((from == null) || (from.equals(account.getJid()))) {
 285					Element query = packet.findChild("query");
 286					processRosterItems(account, query);
 287				} else {
 288					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 289				}
 290			} else if (packet
 291					.hasChild("open", "http://jabber.org/protocol/ibb")
 292					|| packet
 293							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 294				XmppConnectionService.this.mJingleConnectionManager
 295						.deliverIbbPacket(account, packet);
 296			} else if (packet.hasChild("query",
 297					"http://jabber.org/protocol/disco#info")) {
 298				IqPacket iqResponse = packet
 299						.generateRespone(IqPacket.TYPE_RESULT);
 300				Element query = iqResponse.addChild("query",
 301						"http://jabber.org/protocol/disco#info");
 302				query.addChild("feature").setAttribute("var",
 303						"urn:xmpp:jingle:1");
 304				query.addChild("feature").setAttribute("var",
 305						"urn:xmpp:jingle:apps:file-transfer:3");
 306				query.addChild("feature").setAttribute("var",
 307						"urn:xmpp:jingle:transports:s5b:1");
 308				query.addChild("feature").setAttribute("var",
 309						"urn:xmpp:jingle:transports:ibb:1");
 310				if (confirmMessages()) {
 311					query.addChild("feature").setAttribute("var",
 312							"urn:xmpp:receipts");
 313				}
 314				account.getXmppConnection().sendIqPacket(iqResponse, null);
 315			} else {
 316				if ((packet.getType() == IqPacket.TYPE_GET)
 317						|| (packet.getType() == IqPacket.TYPE_SET)) {
 318					IqPacket response = packet
 319							.generateRespone(IqPacket.TYPE_ERROR);
 320					Element error = response.addChild("error");
 321					error.setAttribute("type", "cancel");
 322					error.addChild("feature-not-implemented",
 323							"urn:ietf:params:xml:ns:xmpp-stanzas");
 324					account.getXmppConnection().sendIqPacket(response, null);
 325				}
 326			}
 327		}
 328	};
 329
 330	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 331
 332		@Override
 333		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 334			mJingleConnectionManager.deliverPacket(account, packet);
 335		}
 336	};
 337
 338	private OpenPgpServiceConnection pgpServiceConnection;
 339	private PgpEngine mPgpEngine = null;
 340	private Intent pingIntent;
 341	private PendingIntent pendingPingIntent = null;
 342	private WakeLock wakeLock;
 343	private PowerManager pm;
 344
 345	public PgpEngine getPgpEngine() {
 346		if (pgpServiceConnection.isBound()) {
 347			if (this.mPgpEngine == null) {
 348				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 349						getApplicationContext(),
 350						pgpServiceConnection.getService()), this);
 351			}
 352			return mPgpEngine;
 353		} else {
 354			return null;
 355		}
 356
 357	}
 358
 359	public FileBackend getFileBackend() {
 360		return this.fileBackend;
 361	}
 362
 363	public Message attachImageToConversation(final Conversation conversation,
 364			final Uri uri, final UiCallback<Message> callback) {
 365		final Message message;
 366		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 367			message = new Message(conversation, "",
 368					Message.ENCRYPTION_DECRYPTED);
 369		} else {
 370			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 371		}
 372		message.setPresence(conversation.getNextPresence());
 373		message.setType(Message.TYPE_IMAGE);
 374		message.setStatus(Message.STATUS_OFFERED);
 375		new Thread(new Runnable() {
 376
 377			@Override
 378			public void run() {
 379				try {
 380					getFileBackend().copyImageToPrivateStorage(message, uri);
 381					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 382						getPgpEngine().encrypt(message, callback);
 383					} else {
 384						callback.success(message);
 385					}
 386				} catch (FileBackend.ImageCopyException e) {
 387					callback.error(e.getResId(), message);
 388				}
 389			}
 390		}).start();
 391		return message;
 392	}
 393
 394	public Conversation findMuc(String name, Account account) {
 395		for (Conversation conversation : this.conversations) {
 396			if (conversation.getContactJid().split("/")[0].equals(name)
 397					&& (conversation.getAccount() == account)) {
 398				return conversation;
 399			}
 400		}
 401		return null;
 402	}
 403
 404	private void processRosterItems(Account account, Element elements) {
 405		String version = elements.getAttribute("ver");
 406		if (version != null) {
 407			account.getRoster().setVersion(version);
 408		}
 409		for (Element item : elements.getChildren()) {
 410			if (item.getName().equals("item")) {
 411				String jid = item.getAttribute("jid");
 412				String name = item.getAttribute("name");
 413				String subscription = item.getAttribute("subscription");
 414				Contact contact = account.getRoster().getContact(jid);
 415				if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
 416					contact.setServerName(name);
 417				}
 418				if (subscription.equals("remove")) {
 419					contact.resetOption(Contact.Options.IN_ROSTER);
 420					contact.resetOption(Contact.Options.DIRTY_DELETE);
 421				} else {
 422					contact.setOption(Contact.Options.IN_ROSTER);
 423					contact.parseSubscriptionFromElement(item);
 424				}
 425			}
 426		}
 427	}
 428
 429	public class XmppConnectionBinder extends Binder {
 430		public XmppConnectionService getService() {
 431			return XmppConnectionService.this;
 432		}
 433	}
 434
 435	@Override
 436	public int onStartCommand(Intent intent, int flags, int startId) {
 437		if ((intent != null)
 438				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 439			mergePhoneContactsWithRoster();
 440			return START_STICKY;
 441		} else if ((intent != null)
 442				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 443			logoutAndSave();
 444			return START_NOT_STICKY;
 445		}
 446		this.wakeLock.acquire();
 447		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 448				.getSystemService(Context.CONNECTIVITY_SERVICE);
 449		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 450		boolean isConnected = activeNetwork != null
 451				&& activeNetwork.isConnected();
 452
 453		for (Account account : accounts) {
 454			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 455				if (!isConnected) {
 456					account.setStatus(Account.STATUS_NO_INTERNET);
 457					if (statusListener != null) {
 458						statusListener.onStatusChanged(account);
 459					}
 460				} else {
 461					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 462						account.setStatus(Account.STATUS_OFFLINE);
 463						if (statusListener != null) {
 464							statusListener.onStatusChanged(account);
 465						}
 466					}
 467					if (account.getStatus() == Account.STATUS_ONLINE) {
 468						long lastReceived = account.getXmppConnection().lastPaketReceived;
 469						long lastSent = account.getXmppConnection().lastPingSent;
 470						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 471							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 472							this.reconnectAccount(account, true);
 473						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 474							account.getXmppConnection().sendPing();
 475							account.getXmppConnection().lastPingSent = SystemClock
 476									.elapsedRealtime();
 477							this.scheduleWakeupCall(2, false);
 478						}
 479					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 480						if (account.getXmppConnection() == null) {
 481							account.setXmppConnection(this
 482									.createConnection(account));
 483						}
 484						account.getXmppConnection().lastPingSent = SystemClock
 485								.elapsedRealtime();
 486						new Thread(account.getXmppConnection()).start();
 487					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 488							&& ((SystemClock.elapsedRealtime() - account
 489									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 490						Log.d(LOGTAG, account.getJid()
 491								+ ": time out during connect reconnecting");
 492						reconnectAccount(account, true);
 493					} else {
 494						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 495							reconnectAccount(account, true);
 496						}
 497					}
 498					// in any case. reschedule wakup call
 499					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 500				}
 501				if (accountChangedListener != null) {
 502					accountChangedListener.onAccountListChangedListener();
 503				}
 504			}
 505		}
 506		if (wakeLock.isHeld()) {
 507			wakeLock.release();
 508		}
 509		return START_STICKY;
 510	}
 511
 512	@Override
 513	public void onCreate() {
 514		ExceptionHelper.init(getApplicationContext());
 515		this.databaseBackend = DatabaseBackend
 516				.getInstance(getApplicationContext());
 517		this.fileBackend = new FileBackend(getApplicationContext());
 518		this.accounts = databaseBackend.getAccounts();
 519
 520		for (Account account : this.accounts) {
 521			this.databaseBackend.readRoster(account.getRoster());
 522		}
 523		this.mergePhoneContactsWithRoster();
 524		this.getConversations();
 525
 526		getContentResolver().registerContentObserver(
 527				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 528		this.pgpServiceConnection = new OpenPgpServiceConnection(
 529				getApplicationContext(), "org.sufficientlysecure.keychain");
 530		this.pgpServiceConnection.bindToService();
 531
 532		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 533		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 534				"XmppConnectionService");
 535	}
 536
 537	@Override
 538	public void onDestroy() {
 539		super.onDestroy();
 540		this.logoutAndSave();
 541	}
 542
 543	@Override
 544	public void onTaskRemoved(Intent rootIntent) {
 545		super.onTaskRemoved(rootIntent);
 546		this.logoutAndSave();
 547	}
 548
 549	private void logoutAndSave() {
 550		for (Account account : accounts) {
 551			databaseBackend.writeRoster(account.getRoster());
 552			if (account.getXmppConnection() != null) {
 553				disconnect(account, false);
 554			}
 555		}
 556		Context context = getApplicationContext();
 557		AlarmManager alarmManager = (AlarmManager) context
 558				.getSystemService(Context.ALARM_SERVICE);
 559		Intent intent = new Intent(context, EventReceiver.class);
 560		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 561		Log.d(LOGTAG, "good bye");
 562		stopSelf();
 563	}
 564
 565	protected void scheduleWakeupCall(int seconds, boolean ping) {
 566		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 567		Context context = getApplicationContext();
 568		AlarmManager alarmManager = (AlarmManager) context
 569				.getSystemService(Context.ALARM_SERVICE);
 570
 571		if (ping) {
 572			if (this.pingIntent == null) {
 573				this.pingIntent = new Intent(context, EventReceiver.class);
 574				this.pingIntent.setAction("ping");
 575				this.pingIntent.putExtra("time", timeToWake);
 576				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 577						this.pingIntent, 0);
 578				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 579						timeToWake, pendingPingIntent);
 580			} else {
 581				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 582				if (scheduledTime < SystemClock.elapsedRealtime()
 583						|| (scheduledTime > timeToWake)) {
 584					this.pingIntent.putExtra("time", timeToWake);
 585					alarmManager.cancel(this.pendingPingIntent);
 586					this.pendingPingIntent = PendingIntent.getBroadcast(
 587							context, 0, this.pingIntent, 0);
 588					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 589							timeToWake, pendingPingIntent);
 590				}
 591			}
 592		} else {
 593			Intent intent = new Intent(context, EventReceiver.class);
 594			intent.setAction("ping_check");
 595			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 596					intent, 0);
 597			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 598					alarmIntent);
 599		}
 600
 601	}
 602
 603	public XmppConnection createConnection(Account account) {
 604		SharedPreferences sharedPref = getPreferences();
 605		account.setResource(sharedPref.getString("resource", "mobile")
 606				.toLowerCase(Locale.getDefault()));
 607		XmppConnection connection = new XmppConnection(account, this.pm);
 608		connection.setOnMessagePacketReceivedListener(this.messageListener);
 609		connection.setOnStatusChangedListener(this.statusListener);
 610		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 611		connection
 612				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 613		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 614		connection
 615				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 616
 617					@Override
 618					public void onTLSExceptionReceived(String fingerprint,
 619							Account account) {
 620						Log.d(LOGTAG, "tls exception arrived in service");
 621						if (tlsException != null) {
 622							tlsException.onTLSExceptionReceived(fingerprint,
 623									account);
 624						}
 625					}
 626				});
 627		connection.setOnBindListener(new OnBindListener() {
 628
 629			@Override
 630			public void onBind(final Account account) {
 631				account.getRoster().clearPresences();
 632				account.clearPresences(); // self presences
 633				fetchRosterFromServer(account);
 634				sendPresence(account);
 635				connectMultiModeConversations(account);
 636				if (convChangedListener != null) {
 637					convChangedListener.onConversationListChanged();
 638				}
 639			}
 640		});
 641		return connection;
 642	}
 643
 644	synchronized public void sendMessage(Message message) {
 645		Account account = message.getConversation().getAccount();
 646		Conversation conv = message.getConversation();
 647		MessagePacket packet = null;
 648		boolean saveInDb = false;
 649		boolean addToConversation = false;
 650		boolean send = false;
 651		if (account.getStatus() == Account.STATUS_ONLINE) {
 652			if (message.getType() == Message.TYPE_IMAGE) {
 653				if (message.getPresence() !=null ) {
 654					mJingleConnectionManager.createNewConnection(message);
 655				} else {
 656					message.setStatus(Message.STATUS_WAITING);
 657					saveInDb = true;
 658					addToConversation = true;
 659				}
 660			} else {
 661				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 662					if (!conv.hasValidOtrSession()&&(message.getPresence() != null)) {
 663						// starting otr session. messages will be send later
 664						conv.startOtrSession(getApplicationContext(),
 665								message.getPresence(), true);
 666					} else if (conv.hasValidOtrSession() && conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 667						// otr session aleary exists, creating message packet
 668						// accordingly
 669						packet = prepareMessagePacket(account, message,
 670								conv.getOtrSession());
 671						send = true;
 672						message.setStatus(Message.STATUS_SEND);
 673					}  else if (message.getPresence() == null) {
 674						message.setStatus(Message.STATUS_WAITING);
 675					}
 676					saveInDb = true;
 677					addToConversation = true;
 678				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 679					message.getConversation().endOtrIfNeeded();
 680					packet = prepareMessagePacket(account, message, null);
 681					packet.setBody("This is an XEP-0027 encryted message");
 682					packet.addChild("x", "jabber:x:encrypted").setContent(
 683							message.getEncryptedBody());
 684					message.setStatus(Message.STATUS_SEND);
 685					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 686					saveInDb = true;
 687					addToConversation = true;
 688					send = true;
 689				} else {
 690					message.getConversation().endOtrIfNeeded();
 691					// don't encrypt
 692					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 693						message.setStatus(Message.STATUS_SEND);
 694					}
 695					packet = prepareMessagePacket(account, message, null);
 696					send = true;
 697					saveInDb = true;
 698					addToConversation = true;
 699				}
 700			}
 701		} else {
 702			if (message.getType() == Message.TYPE_IMAGE) { 
 703				message.setStatus(Message.STATUS_WAITING);
 704				saveInDb = true;
 705				addToConversation = true;
 706			} else {
 707				if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 708					String pgpBody = message.getEncryptedBody();
 709					String decryptedBody = message.getBody();
 710					message.setBody(pgpBody);
 711					databaseBackend.createMessage(message);
 712					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 713					message.setBody(decryptedBody);
 714					addToConversation = true;
 715				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 716					if (conv.hasValidOtrSession()) {
 717						message.setPresence(conv.getOtrSession().getSessionID()
 718								.getUserID());
 719					} else if (!conv.hasValidOtrSession() && message.getPresence() != null) {
 720						conv.startOtrSession(getApplicationContext(),
 721								message.getPresence(), false);
 722					} else if (message.getPresence() == null) {
 723						message.setStatus(Message.STATUS_WAITING);
 724					}
 725					saveInDb = true;
 726					addToConversation = true;
 727				} else {
 728					saveInDb = true;
 729					addToConversation = true;
 730				}
 731			}
 732
 733		}
 734		if (saveInDb) {
 735			databaseBackend.createMessage(message);
 736		}
 737		if (addToConversation) {
 738			conv.getMessages().add(message);
 739			if (convChangedListener != null) {
 740				convChangedListener.onConversationListChanged();
 741			}
 742		}
 743		if ((send) && (packet != null)) {
 744			account.getXmppConnection().sendMessagePacket(packet);
 745		}
 746
 747	}
 748
 749	private void sendUnsendMessages(Conversation conversation) {
 750		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 751			int status = conversation.getMessages().get(i).getStatus();
 752			if ((status == Message.STATUS_UNSEND)
 753					|| (status == Message.STATUS_WAITING)) {
 754				resendMessage(conversation.getMessages().get(i));
 755			}
 756		}
 757	}
 758
 759	private void resendMessage(Message message) {
 760		Account account = message.getConversation().getAccount();
 761		if (message.getType() == Message.TYPE_TEXT) {
 762			MessagePacket packet = null;
 763			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 764				packet = prepareMessagePacket(account, message, null);
 765			} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 766				packet = prepareMessagePacket(account, message, null);
 767				packet.setBody("This is an XEP-0027 encryted message");
 768				if (message.getEncryptedBody() == null) {
 769					markMessage(message, Message.STATUS_SEND_FAILED);
 770					return;
 771				}
 772				packet.addChild("x", "jabber:x:encrypted").setContent(
 773						message.getEncryptedBody());
 774			} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 775				packet = prepareMessagePacket(account, message, null);
 776				packet.setBody("This is an XEP-0027 encryted message");
 777				packet.addChild("x", "jabber:x:encrypted").setContent(
 778						message.getBody());
 779			} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 780				Presences presences = message.getConversation().getContact()
 781						.getPresences();
 782				if (!message.getConversation().hasValidOtrSession()) {
 783					if ((message.getPresence() != null)
 784							&& (presences.has(message.getPresence()))) {
 785						message.getConversation().startOtrSession(
 786								getApplicationContext(), message.getPresence(),
 787								true);
 788					} else {
 789						if (presences.size() == 1) {
 790							String presence = presences.asStringArray()[0];
 791							message.getConversation().startOtrSession(
 792									getApplicationContext(), presence, true);
 793						}
 794					}
 795				}
 796			}
 797			if (packet != null) {
 798				account.getXmppConnection().sendMessagePacket(packet);
 799				markMessage(message, Message.STATUS_SEND);
 800			}
 801		} else if (message.getType() == Message.TYPE_IMAGE) {
 802			// TODO: send images
 803
 804		}
 805	}
 806
 807	public MessagePacket prepareMessagePacket(Account account, Message message,
 808			Session otrSession) {
 809		MessagePacket packet = new MessagePacket();
 810		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 811			packet.setType(MessagePacket.TYPE_CHAT);
 812			if (otrSession != null) {
 813				try {
 814					packet.setBody(otrSession.transformSending(message
 815							.getBody()));
 816				} catch (OtrException e) {
 817					Log.d(LOGTAG,
 818							account.getJid()
 819									+ ": could not encrypt message to "
 820									+ message.getCounterpart());
 821				}
 822				packet.addChild("private", "urn:xmpp:carbons:2");
 823				packet.addChild("no-copy", "urn:xmpp:hints");
 824				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 825						+ otrSession.getSessionID().getUserID());
 826				packet.setFrom(account.getFullJid());
 827			} else {
 828				packet.setBody(message.getBody());
 829				packet.setTo(message.getCounterpart());
 830				packet.setFrom(account.getJid());
 831			}
 832			packet.addChild("markable", "urn:xmpp:chat-markers:0");
 833		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 834			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 835			packet.setBody(message.getBody());
 836			packet.setTo(message.getCounterpart().split("/")[0]);
 837			packet.setFrom(account.getJid());
 838		}
 839		packet.setId(message.getUuid());
 840		return packet;
 841	}
 842
 843	public void fetchRosterFromServer(Account account) {
 844		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 845		if (!"".equals(account.getRosterVersion())) {
 846			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 847					+ account.getRosterVersion());
 848		} else {
 849			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 850		}
 851		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 852				account.getRosterVersion());
 853		account.getXmppConnection().sendIqPacket(iqPacket,
 854				new OnIqPacketReceived() {
 855
 856					@Override
 857					public void onIqPacketReceived(final Account account,
 858							IqPacket packet) {
 859						Element roster = packet.findChild("query");
 860						if (roster != null) {
 861							account.getRoster().markAllAsNotInRoster();
 862							processRosterItems(account, roster);
 863						}
 864					}
 865				});
 866	}
 867
 868	private void mergePhoneContactsWithRoster() {
 869		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 870				new OnPhoneContactsLoadedListener() {
 871					@Override
 872					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 873						for (Account account : accounts) {
 874							account.getRoster().clearSystemAccounts();
 875						}
 876						for (Bundle phoneContact : phoneContacts) {
 877							for (Account account : accounts) {
 878								String jid = phoneContact.getString("jid");
 879								Contact contact = account.getRoster()
 880										.getContact(jid);
 881								String systemAccount = phoneContact
 882										.getInt("phoneid")
 883										+ "#"
 884										+ phoneContact.getString("lookup");
 885								contact.setSystemAccount(systemAccount);
 886								contact.setPhotoUri(phoneContact
 887										.getString("photouri"));
 888								contact.setSystemName(phoneContact
 889										.getString("displayname"));
 890							}
 891						}
 892					}
 893				});
 894	}
 895
 896	public List<Conversation> getConversations() {
 897		if (this.conversations == null) {
 898			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 899			for (Account account : this.accounts) {
 900				accountLookupTable.put(account.getUuid(), account);
 901			}
 902			this.conversations = databaseBackend
 903					.getConversations(Conversation.STATUS_AVAILABLE);
 904			for (Conversation conv : this.conversations) {
 905				Account account = accountLookupTable.get(conv.getAccountUuid());
 906				conv.setAccount(account);
 907				conv.setMessages(databaseBackend.getMessages(conv, 50));
 908			}
 909		}
 910		Collections.sort(this.conversations, new Comparator<Conversation>() {
 911			@Override
 912			public int compare(Conversation lhs, Conversation rhs) {
 913				Message left = lhs.getLatestMessage();
 914				Message right = rhs.getLatestMessage();
 915				if (left.getTimeSent() > right.getTimeSent()) {
 916					return -1;
 917				} else if (left.getTimeSent() < right.getTimeSent()) {
 918					return 1;
 919				} else {
 920					return 0;
 921				}
 922			}
 923		});
 924		return this.conversations;
 925	}
 926
 927	public List<Account> getAccounts() {
 928		return this.accounts;
 929	}
 930
 931	public Conversation findActiveConversation(Contact contact) {
 932		for (Conversation conversation : this.getConversations()) {
 933			if (conversation.getContact() == contact) {
 934				return conversation;
 935			}
 936		}
 937		return null;
 938	}
 939
 940	public Conversation findOrCreateConversation(Account account, String jid,
 941			boolean muc) {
 942		for (Conversation conv : this.getConversations()) {
 943			if ((conv.getAccount().equals(account))
 944					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 945				return conv;
 946			}
 947		}
 948		Conversation conversation = databaseBackend.findConversation(account,
 949				jid);
 950		if (conversation != null) {
 951			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 952			conversation.setAccount(account);
 953			if (muc) {
 954				conversation.setMode(Conversation.MODE_MULTI);
 955			} else {
 956				conversation.setMode(Conversation.MODE_SINGLE);
 957			}
 958			conversation.setMessages(databaseBackend.getMessages(conversation,
 959					50));
 960			this.databaseBackend.updateConversation(conversation);
 961		} else {
 962			String conversationName;
 963			Contact contact = account.getRoster().getContact(jid);
 964			if (contact != null) {
 965				conversationName = contact.getDisplayName();
 966			} else {
 967				conversationName = jid.split("@")[0];
 968			}
 969			if (muc) {
 970				conversation = new Conversation(conversationName, account, jid,
 971						Conversation.MODE_MULTI);
 972			} else {
 973				conversation = new Conversation(conversationName, account, jid,
 974						Conversation.MODE_SINGLE);
 975			}
 976			this.databaseBackend.createConversation(conversation);
 977		}
 978		this.conversations.add(conversation);
 979		if ((account.getStatus() == Account.STATUS_ONLINE)
 980				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
 981			joinMuc(conversation);
 982		}
 983		if (this.convChangedListener != null) {
 984			this.convChangedListener.onConversationListChanged();
 985		}
 986		return conversation;
 987	}
 988
 989	public void archiveConversation(Conversation conversation) {
 990		if (conversation.getMode() == Conversation.MODE_MULTI) {
 991			leaveMuc(conversation);
 992		} else {
 993			conversation.endOtrIfNeeded();
 994		}
 995		this.databaseBackend.updateConversation(conversation);
 996		this.conversations.remove(conversation);
 997		if (this.convChangedListener != null) {
 998			this.convChangedListener.onConversationListChanged();
 999		}
1000	}
1001
1002	public void clearConversationHistory(Conversation conversation) {
1003		this.databaseBackend.deleteMessagesInConversation(conversation);
1004		this.fileBackend.removeFiles(conversation);
1005		conversation.getMessages().clear();
1006		if (this.convChangedListener != null) {
1007			this.convChangedListener.onConversationListChanged();
1008		}
1009	}
1010
1011	public int getConversationCount() {
1012		return this.databaseBackend.getConversationCount();
1013	}
1014
1015	public void createAccount(Account account) {
1016		databaseBackend.createAccount(account);
1017		this.accounts.add(account);
1018		this.reconnectAccount(account, false);
1019		if (accountChangedListener != null)
1020			accountChangedListener.onAccountListChangedListener();
1021	}
1022
1023	public void updateAccount(Account account) {
1024		this.statusListener.onStatusChanged(account);
1025		databaseBackend.updateAccount(account);
1026		reconnectAccount(account, false);
1027		if (accountChangedListener != null) {
1028			accountChangedListener.onAccountListChangedListener();
1029		}
1030		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1031	}
1032
1033	public void deleteAccount(Account account) {
1034		if (account.getXmppConnection() != null) {
1035			this.disconnect(account, true);
1036		}
1037		databaseBackend.deleteAccount(account);
1038		this.accounts.remove(account);
1039		if (accountChangedListener != null) {
1040			accountChangedListener.onAccountListChangedListener();
1041		}
1042		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1043	}
1044
1045	public void setOnConversationListChangedListener(
1046			OnConversationListChangedListener listener) {
1047		this.convChangedListener = listener;
1048		this.convChangedListenerCount++;
1049	}
1050
1051	public void removeOnConversationListChangedListener() {
1052		this.convChangedListenerCount--;
1053		if (this.convChangedListenerCount == 0) {
1054			this.convChangedListener = null;
1055		}
1056	}
1057
1058	public void setOnAccountListChangedListener(
1059			OnAccountListChangedListener listener) {
1060		this.accountChangedListener = listener;
1061	}
1062
1063	public void removeOnAccountListChangedListener() {
1064		this.accountChangedListener = null;
1065	}
1066
1067	public void connectMultiModeConversations(Account account) {
1068		List<Conversation> conversations = getConversations();
1069		for (int i = 0; i < conversations.size(); i++) {
1070			Conversation conversation = conversations.get(i);
1071			if ((conversation.getMode() == Conversation.MODE_MULTI)
1072					&& (conversation.getAccount() == account)) {
1073				joinMuc(conversation);
1074			}
1075		}
1076	}
1077
1078	public void joinMuc(Conversation conversation) {
1079		Account account = conversation.getAccount();
1080		String[] mucParts = conversation.getContactJid().split("/");
1081		String muc;
1082		String nick;
1083		if (mucParts.length == 2) {
1084			muc = mucParts[0];
1085			nick = mucParts[1];
1086		} else {
1087			muc = mucParts[0];
1088			nick = account.getUsername();
1089		}
1090		PresencePacket packet = new PresencePacket();
1091		packet.setAttribute("to", muc + "/" + nick);
1092		Element x = new Element("x");
1093		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1094		String sig = account.getPgpSignature();
1095		if (sig != null) {
1096			packet.addChild("status").setContent("online");
1097			packet.addChild("x", "jabber:x:signed").setContent(sig);
1098		}
1099		if (conversation.getMessages().size() != 0) {
1100			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1101			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1102			x.addChild("history").setAttribute("seconds", diff + "");
1103		}
1104		packet.addChild(x);
1105		account.getXmppConnection().sendPresencePacket(packet);
1106	}
1107
1108	private OnRenameListener renameListener = null;
1109
1110	public void setOnRenameListener(OnRenameListener listener) {
1111		this.renameListener = listener;
1112	}
1113
1114	public void renameInMuc(final Conversation conversation, final String nick) {
1115		final MucOptions options = conversation.getMucOptions();
1116		if (options.online()) {
1117			Account account = conversation.getAccount();
1118			options.setOnRenameListener(new OnRenameListener() {
1119
1120				@Override
1121				public void onRename(boolean success) {
1122					if (renameListener != null) {
1123						renameListener.onRename(success);
1124					}
1125					if (success) {
1126						String jid = conversation.getContactJid().split("/")[0]
1127								+ "/" + nick;
1128						conversation.setContactJid(jid);
1129						databaseBackend.updateConversation(conversation);
1130					}
1131				}
1132			});
1133			options.flagAboutToRename();
1134			PresencePacket packet = new PresencePacket();
1135			packet.setAttribute("to",
1136					conversation.getContactJid().split("/")[0] + "/" + nick);
1137			packet.setAttribute("from", conversation.getAccount().getFullJid());
1138
1139			String sig = account.getPgpSignature();
1140			if (sig != null) {
1141				packet.addChild("status").setContent("online");
1142				packet.addChild("x", "jabber:x:signed").setContent(sig);
1143			}
1144
1145			account.getXmppConnection().sendPresencePacket(packet, null);
1146		} else {
1147			String jid = conversation.getContactJid().split("/")[0] + "/"
1148					+ nick;
1149			conversation.setContactJid(jid);
1150			databaseBackend.updateConversation(conversation);
1151			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1152				joinMuc(conversation);
1153			}
1154		}
1155	}
1156
1157	public void leaveMuc(Conversation conversation) {
1158		PresencePacket packet = new PresencePacket();
1159		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1160				+ "/" + conversation.getMucOptions().getNick());
1161		packet.setAttribute("from", conversation.getAccount().getFullJid());
1162		packet.setAttribute("type", "unavailable");
1163		Log.d(LOGTAG, "send leaving muc " + packet);
1164		conversation.getAccount().getXmppConnection()
1165				.sendPresencePacket(packet);
1166		conversation.getMucOptions().setOffline();
1167	}
1168
1169	public void disconnect(Account account, boolean force) {
1170		if ((account.getStatus() == Account.STATUS_ONLINE)
1171				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1172			if (!force) {
1173				List<Conversation> conversations = getConversations();
1174				for (int i = 0; i < conversations.size(); i++) {
1175					Conversation conversation = conversations.get(i);
1176					if (conversation.getAccount() == account) {
1177						if (conversation.getMode() == Conversation.MODE_MULTI) {
1178							leaveMuc(conversation);
1179						} else {
1180							conversation.endOtrIfNeeded();
1181						}
1182					}
1183				}
1184			}
1185			account.getXmppConnection().disconnect(force);
1186		}
1187	}
1188
1189	@Override
1190	public IBinder onBind(Intent intent) {
1191		return mBinder;
1192	}
1193
1194	public void updateMessage(Message message) {
1195		databaseBackend.updateMessage(message);
1196	}
1197
1198	protected void syncDirtyContacts(Account account) {
1199		for (Contact contact : account.getRoster().getContacts()) {
1200			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1201				pushContactToServer(contact);
1202			}
1203			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1204				Log.d(LOGTAG, "dirty delete");
1205				deleteContactOnServer(contact);
1206			}
1207		}
1208	}
1209
1210	public void createContact(Contact contact) {
1211		SharedPreferences sharedPref = getPreferences();
1212		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1213		if (autoGrant) {
1214			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1215			contact.setOption(Contact.Options.ASKING);
1216		}
1217		pushContactToServer(contact);
1218	}
1219
1220	public void onOtrSessionEstablished(Conversation conversation) {
1221		Account account = conversation.getAccount();
1222		List<Message> messages = conversation.getMessages();
1223		Session otrSession = conversation.getOtrSession();
1224		Log.d(LOGTAG, account.getJid() + " otr session established with "
1225				+ conversation.getContactJid() + "/"
1226				+ otrSession.getSessionID().getUserID());
1227		for (int i = 0; i < messages.size(); ++i) {
1228			Message msg = messages.get(i);
1229			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1230					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1231				MessagePacket outPacket = prepareMessagePacket(account, msg,
1232						otrSession);
1233				msg.setStatus(Message.STATUS_SEND);
1234				databaseBackend.updateMessage(msg);
1235				account.getXmppConnection().sendMessagePacket(outPacket);
1236			}
1237		}
1238		updateUi(conversation, false);
1239	}
1240
1241	public void pushContactToServer(Contact contact) {
1242		contact.resetOption(Contact.Options.DIRTY_DELETE);
1243		Account account = contact.getAccount();
1244		if (account.getStatus() == Account.STATUS_ONLINE) {
1245			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1246			iq.query("jabber:iq:roster").addChild(contact.asElement());
1247			account.getXmppConnection().sendIqPacket(iq, null);
1248			if (contact.getOption(Contact.Options.ASKING)) {
1249				requestPresenceUpdatesFrom(contact);
1250			}
1251			if (contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1252				Log.d("xmppService", "contact had pending subscription");
1253				sendPresenceUpdatesTo(contact);
1254			}
1255			contact.resetOption(Contact.Options.DIRTY_PUSH);
1256		} else {
1257			contact.setOption(Contact.Options.DIRTY_PUSH);
1258		}
1259	}
1260
1261	public void deleteContactOnServer(Contact contact) {
1262		contact.resetOption(Contact.Options.DIRTY_PUSH);
1263		Account account = contact.getAccount();
1264		if (account.getStatus() == Account.STATUS_ONLINE) {
1265			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1266			Element item = iq.query("jabber:iq:roster").addChild("item");
1267			item.setAttribute("jid", contact.getJid());
1268			item.setAttribute("subscription", "remove");
1269			account.getXmppConnection().sendIqPacket(iq, null);
1270			contact.resetOption(Contact.Options.DIRTY_DELETE);
1271		} else {
1272			contact.setOption(Contact.Options.DIRTY_DELETE);
1273		}
1274	}
1275
1276	public void requestPresenceUpdatesFrom(Contact contact) {
1277		PresencePacket packet = new PresencePacket();
1278		packet.setAttribute("type", "subscribe");
1279		packet.setAttribute("to", contact.getJid());
1280		packet.setAttribute("from", contact.getAccount().getJid());
1281		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1282	}
1283
1284	public void stopPresenceUpdatesFrom(Contact contact) {
1285		PresencePacket packet = new PresencePacket();
1286		packet.setAttribute("type", "unsubscribe");
1287		packet.setAttribute("to", contact.getJid());
1288		packet.setAttribute("from", contact.getAccount().getJid());
1289		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1290	}
1291
1292	public void stopPresenceUpdatesTo(Contact contact) {
1293		PresencePacket packet = new PresencePacket();
1294		packet.setAttribute("type", "unsubscribed");
1295		packet.setAttribute("to", contact.getJid());
1296		packet.setAttribute("from", contact.getAccount().getJid());
1297		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1298	}
1299
1300	public void sendPresenceUpdatesTo(Contact contact) {
1301		PresencePacket packet = new PresencePacket();
1302		packet.setAttribute("type", "subscribed");
1303		packet.setAttribute("to", contact.getJid());
1304		packet.setAttribute("from", contact.getAccount().getJid());
1305		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1306	}
1307
1308	public void sendPresence(Account account) {
1309		PresencePacket packet = new PresencePacket();
1310		packet.setAttribute("from", account.getFullJid());
1311		String sig = account.getPgpSignature();
1312		if (sig != null) {
1313			packet.addChild("status").setContent("online");
1314			packet.addChild("x", "jabber:x:signed").setContent(sig);
1315		}
1316		account.getXmppConnection().sendPresencePacket(packet);
1317	}
1318
1319	public void updateConversation(Conversation conversation) {
1320		this.databaseBackend.updateConversation(conversation);
1321	}
1322
1323	public void removeOnTLSExceptionReceivedListener() {
1324		this.tlsException = null;
1325	}
1326
1327	public void reconnectAccount(final Account account, final boolean force) {
1328		new Thread(new Runnable() {
1329
1330			@Override
1331			public void run() {
1332				if (account.getXmppConnection() != null) {
1333					disconnect(account, force);
1334				}
1335				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1336					if (account.getXmppConnection() == null) {
1337						account.setXmppConnection(createConnection(account));
1338					}
1339					Thread thread = new Thread(account.getXmppConnection());
1340					thread.start();
1341					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1342				}
1343			}
1344		}).start();
1345	}
1346
1347	public void sendConversationSubject(Conversation conversation,
1348			String subject) {
1349		MessagePacket packet = new MessagePacket();
1350		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1351		packet.setTo(conversation.getContactJid().split("/")[0]);
1352		Element subjectChild = new Element("subject");
1353		subjectChild.setContent(subject);
1354		packet.addChild(subjectChild);
1355		packet.setFrom(conversation.getAccount().getJid());
1356		Account account = conversation.getAccount();
1357		if (account.getStatus() == Account.STATUS_ONLINE) {
1358			account.getXmppConnection().sendMessagePacket(packet);
1359		}
1360	}
1361
1362	public void inviteToConference(Conversation conversation,
1363			List<Contact> contacts) {
1364		for (Contact contact : contacts) {
1365			MessagePacket packet = new MessagePacket();
1366			packet.setTo(conversation.getContactJid().split("/")[0]);
1367			packet.setFrom(conversation.getAccount().getFullJid());
1368			Element x = new Element("x");
1369			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1370			Element invite = new Element("invite");
1371			invite.setAttribute("to", contact.getJid());
1372			x.addChild(invite);
1373			packet.addChild(x);
1374			Log.d(LOGTAG, packet.toString());
1375			conversation.getAccount().getXmppConnection()
1376					.sendMessagePacket(packet);
1377		}
1378
1379	}
1380
1381	public boolean markMessage(Account account, String recipient, String uuid,
1382			int status) {
1383		for (Conversation conversation : getConversations()) {
1384			if (conversation.getContactJid().equals(recipient)
1385					&& conversation.getAccount().equals(account)) {
1386				return markMessage(conversation, uuid, status);
1387			}
1388		}
1389		return false;
1390	}
1391
1392	public boolean markMessage(Conversation conversation, String uuid,
1393			int status) {
1394		for (Message message : conversation.getMessages()) {
1395			if (message.getUuid().equals(uuid)) {
1396				markMessage(message, status);
1397				return true;
1398			}
1399		}
1400		return false;
1401	}
1402
1403	public void markMessage(Message message, int status) {
1404		message.setStatus(status);
1405		databaseBackend.updateMessage(message);
1406		if (convChangedListener != null) {
1407			convChangedListener.onConversationListChanged();
1408		}
1409	}
1410
1411	public SharedPreferences getPreferences() {
1412		return PreferenceManager
1413				.getDefaultSharedPreferences(getApplicationContext());
1414	}
1415
1416	public boolean confirmMessages() {
1417		return getPreferences().getBoolean("confirm_messages", true);
1418	}
1419
1420	public void updateUi(Conversation conversation, boolean notify) {
1421		if (convChangedListener != null) {
1422			convChangedListener.onConversationListChanged();
1423		} else {
1424			UIHelper.updateNotification(getApplicationContext(),
1425					getConversations(), conversation, notify);
1426		}
1427	}
1428
1429	public Account findAccountByJid(String accountJid) {
1430		for (Account account : this.accounts) {
1431			if (account.getJid().equals(accountJid)) {
1432				return account;
1433			}
1434		}
1435		return null;
1436	}
1437
1438	public void markRead(Conversation conversation) {
1439		conversation.markRead(this);
1440	}
1441
1442	public void sendConfirmMessage(Account account, String to, String id) {
1443		MessagePacket receivedPacket = new MessagePacket();
1444		receivedPacket.setType(MessagePacket.TYPE_NORMAL);
1445		receivedPacket.setTo(to);
1446		receivedPacket.setFrom(account.getFullJid());
1447		Element received = receivedPacket.addChild("displayed",
1448				"urn:xmpp:chat-markers:0");
1449		received.setAttribute("id", id);
1450		account.getXmppConnection().sendMessagePacket(receivedPacket);
1451	}
1452}