XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.security.SecureRandom;
   4import java.text.SimpleDateFormat;
   5import java.util.ArrayList;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.TimeZone;
  13
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20import eu.siacs.conversations.crypto.PgpEngine;
  21import eu.siacs.conversations.entities.Account;
  22import eu.siacs.conversations.entities.Contact;
  23import eu.siacs.conversations.entities.Conversation;
  24import eu.siacs.conversations.entities.Message;
  25import eu.siacs.conversations.entities.MucOptions;
  26import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  27import eu.siacs.conversations.entities.Presences;
  28import eu.siacs.conversations.generator.MessageGenerator;
  29import eu.siacs.conversations.parser.MessageParser;
  30import eu.siacs.conversations.parser.PresenceParser;
  31import eu.siacs.conversations.persistance.DatabaseBackend;
  32import eu.siacs.conversations.persistance.FileBackend;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.UiCallback;
  36import eu.siacs.conversations.utils.CryptoHelper;
  37import eu.siacs.conversations.utils.ExceptionHelper;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PRNGFixes;
  40import eu.siacs.conversations.utils.PhoneHelper;
  41import eu.siacs.conversations.utils.UIHelper;
  42import eu.siacs.conversations.xml.Element;
  43import eu.siacs.conversations.xmpp.OnBindListener;
  44import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  45import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  46import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  47import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  48import eu.siacs.conversations.xmpp.OnStatusChanged;
  49import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  50import eu.siacs.conversations.xmpp.XmppConnection;
  51import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  52import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  53import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  54import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  55import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  56import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  57import android.annotation.SuppressLint;
  58import android.app.AlarmManager;
  59import android.app.PendingIntent;
  60import android.app.Service;
  61import android.content.Context;
  62import android.content.Intent;
  63import android.content.SharedPreferences;
  64import android.database.ContentObserver;
  65import android.net.ConnectivityManager;
  66import android.net.NetworkInfo;
  67import android.net.Uri;
  68import android.os.Binder;
  69import android.os.Bundle;
  70import android.os.IBinder;
  71import android.os.PowerManager;
  72import android.os.PowerManager.WakeLock;
  73import android.os.SystemClock;
  74import android.preference.PreferenceManager;
  75import android.provider.ContactsContract;
  76import android.util.Log;
  77
  78public class XmppConnectionService extends Service {
  79
  80	protected static final String LOGTAG = "xmppService";
  81	public DatabaseBackend databaseBackend;
  82	private FileBackend fileBackend;
  83
  84	public long startDate;
  85
  86	private static final int PING_MAX_INTERVAL = 300;
  87	private static final int PING_MIN_INTERVAL = 30;
  88	private static final int PING_TIMEOUT = 10;
  89	private static final int CONNECT_TIMEOUT = 90;
  90	private static final long CARBON_GRACE_PERIOD = 60000L;
  91
  92	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  93
  94	private MessageParser mMessageParser = new MessageParser(this);
  95	private PresenceParser mPresenceParser = new PresenceParser(this);
  96	private MessageGenerator mMessageGenerator = new MessageGenerator();
  97
  98	private List<Account> accounts;
  99	private List<Conversation> conversations = null;
 100	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 101			this);
 102
 103	private OnConversationListChangedListener convChangedListener = null;
 104	private int convChangedListenerCount = 0;
 105	private OnAccountListChangedListener accountChangedListener = null;
 106	private OnTLSExceptionReceived tlsException = null;
 107	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 108
 109		@Override
 110		public void onContactStatusChanged(Contact contact, boolean online) {
 111			Conversation conversation = findActiveConversation(contact);
 112			if (conversation != null) {
 113				conversation.endOtrIfNeeded();
 114				if (online && (contact.getPresences().size() == 1)) {
 115					sendUnsendMessages(conversation);
 116				}
 117			}
 118		}
 119	};
 120
 121	public void setOnTLSExceptionReceivedListener(
 122			OnTLSExceptionReceived listener) {
 123		tlsException = listener;
 124	}
 125
 126	private SecureRandom mRandom;
 127
 128	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 129
 130	private ContentObserver contactObserver = new ContentObserver(null) {
 131		@Override
 132		public void onChange(boolean selfChange) {
 133			super.onChange(selfChange);
 134			Intent intent = new Intent(getApplicationContext(),
 135					XmppConnectionService.class);
 136			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 137			startService(intent);
 138		}
 139	};
 140
 141	private final IBinder mBinder = new XmppConnectionBinder();
 142	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 143
 144		@Override
 145		public void onMessagePacketReceived(Account account,
 146				MessagePacket packet) {
 147			Message message = null;
 148			boolean notify = true;
 149			if (getPreferences().getBoolean(
 150					"notification_grace_period_after_carbon_received", true)) {
 151				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 152			}
 153
 154			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 155				if ((packet.getBody() != null)
 156						&& (packet.getBody().startsWith("?OTR"))) {
 157					message = mMessageParser.parseOtrChat(packet, account);
 158					if (message != null) {
 159						message.markUnread();
 160					}
 161				} else if (packet.hasChild("body")) {
 162					message = mMessageParser.parseChat(packet, account);
 163					message.markUnread();
 164				} else if (packet.hasChild("received")
 165						|| (packet.hasChild("sent"))) {
 166					message = mMessageParser
 167							.parseCarbonMessage(packet, account);
 168					if (message != null) {
 169						if (message.getStatus() == Message.STATUS_SEND) {
 170							lastCarbonMessageReceived = SystemClock
 171									.elapsedRealtime();
 172							notify = false;
 173							message.getConversation().markRead();
 174						} else {
 175							message.markUnread();
 176						}
 177					}
 178				}
 179
 180			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 181				message = mMessageParser.parseGroupchat(packet, account);
 182				if (message != null) {
 183					if (message.getStatus() == Message.STATUS_RECIEVED) {
 184						message.markUnread();
 185					} else {
 186						message.getConversation().markRead();
 187						notify = false;
 188					}
 189				}
 190			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 191				mMessageParser.parseError(packet, account);
 192				return;
 193			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 194				mMessageParser.parseNormal(packet, account);
 195			}
 196			if ((message == null) || (message.getBody() == null)) {
 197				return;
 198			}
 199			if ((confirmMessages()) && ((packet.getId() != null))) {
 200				MessagePacket receivedPacket = new MessagePacket();
 201				receivedPacket.setType(MessagePacket.TYPE_NORMAL);
 202				receivedPacket.setTo(message.getCounterpart());
 203				receivedPacket.setFrom(account.getFullJid());
 204				if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
 205					Element received = receivedPacket.addChild("received",
 206							"urn:xmpp:chat-markers:0");
 207					received.setAttribute("id", packet.getId());
 208					account.getXmppConnection().sendMessagePacket(
 209							receivedPacket);
 210				} else if (packet.hasChild("request", "urn:xmpp:receipts")) {
 211					Element received = receivedPacket.addChild("received",
 212							"urn:xmpp:receipts");
 213					received.setAttribute("id", packet.getId());
 214					account.getXmppConnection().sendMessagePacket(
 215							receivedPacket);
 216				}
 217			}
 218			Conversation conversation = message.getConversation();
 219			conversation.getMessages().add(message);
 220			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 221				databaseBackend.createMessage(message);
 222			}
 223			if (convChangedListener != null) {
 224				convChangedListener.onConversationListChanged();
 225			} else {
 226				UIHelper.updateNotification(getApplicationContext(),
 227						getConversations(), message.getConversation(), notify);
 228			}
 229		}
 230	};
 231	private OnStatusChanged statusListener = new OnStatusChanged() {
 232
 233		@Override
 234		public void onStatusChanged(Account account) {
 235			if (accountChangedListener != null) {
 236				accountChangedListener.onAccountListChangedListener();
 237			}
 238			if (account.getStatus() == Account.STATUS_ONLINE) {
 239				mJingleConnectionManager.cancelInTransmission();
 240				List<Conversation> conversations = getConversations();
 241				for (int i = 0; i < conversations.size(); ++i) {
 242					if (conversations.get(i).getAccount() == account) {
 243						conversations.get(i).startOtrIfNeeded();
 244						sendUnsendMessages(conversations.get(i));
 245					}
 246				}
 247				syncDirtyContacts(account);
 248				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 249			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 250				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 251					int timeToReconnect = mRandom.nextInt(50) + 10;
 252					scheduleWakeupCall(timeToReconnect, false);
 253				}
 254
 255			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 256				databaseBackend.updateAccount(account);
 257				reconnectAccount(account, true);
 258			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 259					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 260				int next = account.getXmppConnection().getTimeToNextAttempt();
 261				Log.d(LOGTAG, account.getJid()
 262						+ ": error connecting account. try again in " + next
 263						+ "s for the "
 264						+ (account.getXmppConnection().getAttempt() + 1)
 265						+ " time");
 266				scheduleWakeupCall(next, false);
 267			}
 268			UIHelper.showErrorNotification(getApplicationContext(),
 269					getAccounts());
 270		}
 271	};
 272
 273	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 274
 275		@Override
 276		public void onPresencePacketReceived(final Account account,
 277				PresencePacket packet) {
 278			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 279				mPresenceParser.parseConferencePresence(packet, account);
 280			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 281				mPresenceParser.parseConferencePresence(packet, account);
 282			} else {
 283				mPresenceParser.parseContactPresence(packet, account);
 284			}
 285		}
 286	};
 287
 288	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 289
 290		@Override
 291		public void onIqPacketReceived(Account account, IqPacket packet) {
 292			if (packet.hasChild("query", "jabber:iq:roster")) {
 293				String from = packet.getFrom();
 294				if ((from == null) || (from.equals(account.getJid()))) {
 295					Element query = packet.findChild("query");
 296					processRosterItems(account, query);
 297				} else {
 298					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 299				}
 300			} else if (packet
 301					.hasChild("open", "http://jabber.org/protocol/ibb")
 302					|| packet
 303							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 304				XmppConnectionService.this.mJingleConnectionManager
 305						.deliverIbbPacket(account, packet);
 306			} else if (packet.hasChild("query",
 307					"http://jabber.org/protocol/disco#info")) {
 308				IqPacket iqResponse = packet
 309						.generateRespone(IqPacket.TYPE_RESULT);
 310				Element query = iqResponse.addChild("query",
 311						"http://jabber.org/protocol/disco#info");
 312				query.addChild("feature").setAttribute("var",
 313						"urn:xmpp:jingle:1");
 314				query.addChild("feature").setAttribute("var",
 315						"urn:xmpp:jingle:apps:file-transfer:3");
 316				query.addChild("feature").setAttribute("var",
 317						"urn:xmpp:jingle:transports:s5b:1");
 318				query.addChild("feature").setAttribute("var",
 319						"urn:xmpp:jingle:transports:ibb:1");
 320				if (confirmMessages()) {
 321					query.addChild("feature").setAttribute("var",
 322							"urn:xmpp:receipts");
 323				}
 324				account.getXmppConnection().sendIqPacket(iqResponse, null);
 325			} else {
 326				if ((packet.getType() == IqPacket.TYPE_GET)
 327						|| (packet.getType() == IqPacket.TYPE_SET)) {
 328					IqPacket response = packet
 329							.generateRespone(IqPacket.TYPE_ERROR);
 330					Element error = response.addChild("error");
 331					error.setAttribute("type", "cancel");
 332					error.addChild("feature-not-implemented",
 333							"urn:ietf:params:xml:ns:xmpp-stanzas");
 334					account.getXmppConnection().sendIqPacket(response, null);
 335				}
 336			}
 337		}
 338	};
 339
 340	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 341
 342		@Override
 343		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 344			mJingleConnectionManager.deliverPacket(account, packet);
 345		}
 346	};
 347
 348	private OpenPgpServiceConnection pgpServiceConnection;
 349	private PgpEngine mPgpEngine = null;
 350	private Intent pingIntent;
 351	private PendingIntent pendingPingIntent = null;
 352	private WakeLock wakeLock;
 353	private PowerManager pm;
 354
 355	public PgpEngine getPgpEngine() {
 356		if (pgpServiceConnection.isBound()) {
 357			if (this.mPgpEngine == null) {
 358				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 359						getApplicationContext(),
 360						pgpServiceConnection.getService()), this);
 361			}
 362			return mPgpEngine;
 363		} else {
 364			return null;
 365		}
 366
 367	}
 368
 369	public FileBackend getFileBackend() {
 370		return this.fileBackend;
 371	}
 372
 373	public Message attachImageToConversation(final Conversation conversation,
 374			final Uri uri, final UiCallback<Message> callback) {
 375		final Message message;
 376		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 377			message = new Message(conversation, "",
 378					Message.ENCRYPTION_DECRYPTED);
 379		} else {
 380			message = new Message(conversation, "",
 381					conversation.getNextEncryption());
 382		}
 383		message.setPresence(conversation.getNextPresence());
 384		message.setType(Message.TYPE_IMAGE);
 385		message.setStatus(Message.STATUS_OFFERED);
 386		new Thread(new Runnable() {
 387
 388			@Override
 389			public void run() {
 390				try {
 391					getFileBackend().copyImageToPrivateStorage(message, uri);
 392					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 393						getPgpEngine().encrypt(message, callback);
 394					} else {
 395						callback.success(message);
 396					}
 397				} catch (FileBackend.ImageCopyException e) {
 398					callback.error(e.getResId(), message);
 399				}
 400			}
 401		}).start();
 402		return message;
 403	}
 404
 405	public Conversation findMuc(String name, Account account) {
 406		for (Conversation conversation : this.conversations) {
 407			if (conversation.getContactJid().split("/")[0].equals(name)
 408					&& (conversation.getAccount() == account)) {
 409				return conversation;
 410			}
 411		}
 412		return null;
 413	}
 414
 415	private void processRosterItems(Account account, Element elements) {
 416		String version = elements.getAttribute("ver");
 417		if (version != null) {
 418			account.getRoster().setVersion(version);
 419		}
 420		for (Element item : elements.getChildren()) {
 421			if (item.getName().equals("item")) {
 422				String jid = item.getAttribute("jid");
 423				String name = item.getAttribute("name");
 424				String subscription = item.getAttribute("subscription");
 425				Contact contact = account.getRoster().getContact(jid);
 426				if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
 427					contact.setServerName(name);
 428				}
 429				if (subscription.equals("remove")) {
 430					contact.resetOption(Contact.Options.IN_ROSTER);
 431					contact.resetOption(Contact.Options.DIRTY_DELETE);
 432				} else {
 433					contact.setOption(Contact.Options.IN_ROSTER);
 434					contact.resetOption(Contact.Options.DIRTY_PUSH);
 435					contact.parseSubscriptionFromElement(item);
 436				}
 437			}
 438		}
 439	}
 440
 441	public class XmppConnectionBinder extends Binder {
 442		public XmppConnectionService getService() {
 443			return XmppConnectionService.this;
 444		}
 445	}
 446
 447	@Override
 448	public int onStartCommand(Intent intent, int flags, int startId) {
 449		if ((intent != null)
 450				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 451			mergePhoneContactsWithRoster();
 452			return START_STICKY;
 453		} else if ((intent != null)
 454				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 455			logoutAndSave();
 456			return START_NOT_STICKY;
 457		}
 458		this.wakeLock.acquire();
 459		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 460				.getSystemService(Context.CONNECTIVITY_SERVICE);
 461		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 462		boolean isConnected = activeNetwork != null
 463				&& activeNetwork.isConnected();
 464
 465		for (Account account : accounts) {
 466			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 467				if (!isConnected) {
 468					account.setStatus(Account.STATUS_NO_INTERNET);
 469					if (statusListener != null) {
 470						statusListener.onStatusChanged(account);
 471					}
 472				} else {
 473					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 474						account.setStatus(Account.STATUS_OFFLINE);
 475						if (statusListener != null) {
 476							statusListener.onStatusChanged(account);
 477						}
 478					}
 479					if (account.getStatus() == Account.STATUS_ONLINE) {
 480						long lastReceived = account.getXmppConnection().lastPaketReceived;
 481						long lastSent = account.getXmppConnection().lastPingSent;
 482						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 483							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 484							this.reconnectAccount(account, true);
 485						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 486							account.getXmppConnection().sendPing();
 487							account.getXmppConnection().lastPingSent = SystemClock
 488									.elapsedRealtime();
 489							this.scheduleWakeupCall(2, false);
 490						}
 491					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 492						if (account.getXmppConnection() == null) {
 493							account.setXmppConnection(this
 494									.createConnection(account));
 495						}
 496						account.getXmppConnection().lastPingSent = SystemClock
 497								.elapsedRealtime();
 498						new Thread(account.getXmppConnection()).start();
 499					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 500							&& ((SystemClock.elapsedRealtime() - account
 501									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 502						Log.d(LOGTAG, account.getJid()
 503								+ ": time out during connect reconnecting");
 504						reconnectAccount(account, true);
 505					} else {
 506						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 507							reconnectAccount(account, true);
 508						}
 509					}
 510					// in any case. reschedule wakup call
 511					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 512				}
 513				if (accountChangedListener != null) {
 514					accountChangedListener.onAccountListChangedListener();
 515				}
 516			}
 517		}
 518		if (wakeLock.isHeld()) {
 519			try { wakeLock.release();} catch (RuntimeException re) {}
 520		}
 521		return START_STICKY;
 522	}
 523
 524	@SuppressLint("TrulyRandom")
 525	@Override
 526	public void onCreate() {
 527		ExceptionHelper.init(getApplicationContext());
 528		PRNGFixes.apply();
 529		this.mRandom = new SecureRandom();
 530		this.databaseBackend = DatabaseBackend
 531				.getInstance(getApplicationContext());
 532		this.fileBackend = new FileBackend(getApplicationContext());
 533		this.accounts = databaseBackend.getAccounts();
 534
 535		for (Account account : this.accounts) {
 536			this.databaseBackend.readRoster(account.getRoster());
 537		}
 538		this.mergePhoneContactsWithRoster();
 539		this.getConversations();
 540
 541		getContentResolver().registerContentObserver(
 542				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 543		this.pgpServiceConnection = new OpenPgpServiceConnection(
 544				getApplicationContext(), "org.sufficientlysecure.keychain");
 545		this.pgpServiceConnection.bindToService();
 546
 547		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 548		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 549				"XmppConnectionService");
 550	}
 551
 552	@Override
 553	public void onDestroy() {
 554		super.onDestroy();
 555		this.logoutAndSave();
 556	}
 557
 558	@Override
 559	public void onTaskRemoved(Intent rootIntent) {
 560		super.onTaskRemoved(rootIntent);
 561		this.logoutAndSave();
 562	}
 563
 564	private void logoutAndSave() {
 565		for (Account account : accounts) {
 566			databaseBackend.writeRoster(account.getRoster());
 567			if (account.getXmppConnection() != null) {
 568				disconnect(account, false);
 569			}
 570		}
 571		Context context = getApplicationContext();
 572		AlarmManager alarmManager = (AlarmManager) context
 573				.getSystemService(Context.ALARM_SERVICE);
 574		Intent intent = new Intent(context, EventReceiver.class);
 575		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 576		Log.d(LOGTAG, "good bye");
 577		stopSelf();
 578	}
 579
 580	protected void scheduleWakeupCall(int seconds, boolean ping) {
 581		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 582		Context context = getApplicationContext();
 583		AlarmManager alarmManager = (AlarmManager) context
 584				.getSystemService(Context.ALARM_SERVICE);
 585
 586		if (ping) {
 587			if (this.pingIntent == null) {
 588				this.pingIntent = new Intent(context, EventReceiver.class);
 589				this.pingIntent.setAction("ping");
 590				this.pingIntent.putExtra("time", timeToWake);
 591				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 592						this.pingIntent, 0);
 593				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 594						timeToWake, pendingPingIntent);
 595			} else {
 596				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 597				if (scheduledTime < SystemClock.elapsedRealtime()
 598						|| (scheduledTime > timeToWake)) {
 599					this.pingIntent.putExtra("time", timeToWake);
 600					alarmManager.cancel(this.pendingPingIntent);
 601					this.pendingPingIntent = PendingIntent.getBroadcast(
 602							context, 0, this.pingIntent, 0);
 603					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 604							timeToWake, pendingPingIntent);
 605				}
 606			}
 607		} else {
 608			Intent intent = new Intent(context, EventReceiver.class);
 609			intent.setAction("ping_check");
 610			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 611					intent, 0);
 612			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 613					alarmIntent);
 614		}
 615
 616	}
 617
 618	public XmppConnection createConnection(Account account) {
 619		SharedPreferences sharedPref = getPreferences();
 620		account.setResource(sharedPref.getString("resource", "mobile")
 621				.toLowerCase(Locale.getDefault()));
 622		XmppConnection connection = new XmppConnection(account, this);
 623		connection.setOnMessagePacketReceivedListener(this.messageListener);
 624		connection.setOnStatusChangedListener(this.statusListener);
 625		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 626		connection
 627				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 628		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 629		connection
 630				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 631
 632					@Override
 633					public void onTLSExceptionReceived(String fingerprint,
 634							Account account) {
 635						Log.d(LOGTAG, "tls exception arrived in service");
 636						if (tlsException != null) {
 637							tlsException.onTLSExceptionReceived(fingerprint,
 638									account);
 639						}
 640					}
 641				});
 642		connection.setOnBindListener(new OnBindListener() {
 643
 644			@Override
 645			public void onBind(final Account account) {
 646				account.getRoster().clearPresences();
 647				account.clearPresences(); // self presences
 648				fetchRosterFromServer(account);
 649				sendPresence(account);
 650				connectMultiModeConversations(account);
 651				if (convChangedListener != null) {
 652					convChangedListener.onConversationListChanged();
 653				}
 654			}
 655		});
 656		return connection;
 657	}
 658
 659	synchronized public void sendMessage(Message message) {
 660		Account account = message.getConversation().getAccount();
 661		Conversation conv = message.getConversation();
 662		MessagePacket packet = null;
 663		boolean saveInDb = true;
 664		boolean send = false;
 665		if (account.getStatus() == Account.STATUS_ONLINE) {
 666			if (message.getType() == Message.TYPE_IMAGE) {
 667				if (message.getPresence() != null) {
 668					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 669						if (!conv.hasValidOtrSession()
 670								&& (message.getPresence() != null)) {
 671							conv.startOtrSession(getApplicationContext(),
 672									message.getPresence(), true);
 673							message.setStatus(Message.STATUS_WAITING);
 674						} else if (conv.hasValidOtrSession()
 675								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 676							mJingleConnectionManager
 677									.createNewConnection(message);
 678						} else if (message.getPresence() == null) {
 679							message.setStatus(Message.STATUS_WAITING);
 680						}
 681					} else {
 682						mJingleConnectionManager.createNewConnection(message);
 683					}
 684				} else {
 685					message.setStatus(Message.STATUS_WAITING);
 686				}
 687			} else {
 688				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 689					if (!conv.hasValidOtrSession()
 690							&& (message.getPresence() != null)) {
 691						conv.startOtrSession(getApplicationContext(),
 692								message.getPresence(), true);
 693						message.setStatus(Message.STATUS_WAITING);
 694					} else if (conv.hasValidOtrSession()
 695							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 696						message.setPresence(conv.getOtrSession().getSessionID().getUserID());
 697						try {
 698							packet = mMessageGenerator.generateOtrChat(message);
 699							send = true;
 700							message.setStatus(Message.STATUS_SEND);
 701						} catch (OtrException e) {
 702							Log.e(LOGTAG,"error generating otr packet");
 703							packet = null;
 704						}
 705					} else if (message.getPresence() == null) {
 706						message.setStatus(Message.STATUS_WAITING);
 707					}
 708				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 709					message.getConversation().endOtrIfNeeded();
 710					packet = mMessageGenerator.generatePgpChat(message);
 711					message.setStatus(Message.STATUS_SEND);
 712					send = true;
 713				} else {
 714					message.getConversation().endOtrIfNeeded();
 715					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 716						message.setStatus(Message.STATUS_SEND);
 717					}
 718					packet = mMessageGenerator.generateChat(message);
 719					send = true;
 720				}
 721			}
 722		} else {
 723			message.setStatus(Message.STATUS_WAITING);
 724			if (message.getType() == Message.TYPE_TEXT) {
 725				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 726					String pgpBody = message.getEncryptedBody();
 727					String decryptedBody = message.getBody();
 728					message.setBody(pgpBody);
 729					databaseBackend.createMessage(message);
 730					saveInDb = false;
 731					message.setBody(decryptedBody);
 732				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 733					if (conv.hasValidOtrSession()) {
 734						message.setPresence(conv.getOtrSession().getSessionID()
 735								.getUserID());
 736					} else if (!conv.hasValidOtrSession()
 737							&& message.getPresence() != null) {
 738						conv.startOtrSession(getApplicationContext(),
 739								message.getPresence(), false);
 740					}
 741				}
 742			}
 743
 744		}
 745		if (saveInDb) {
 746			databaseBackend.createMessage(message);
 747		}
 748		conv.getMessages().add(message);
 749		if (convChangedListener != null) {
 750			convChangedListener.onConversationListChanged();
 751		}
 752		if ((send) && (packet != null)) {
 753			account.getXmppConnection().sendMessagePacket(packet);
 754		}
 755
 756	}
 757
 758	private void sendUnsendMessages(Conversation conversation) {
 759		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 760			int status = conversation.getMessages().get(i).getStatus();
 761			if (status == Message.STATUS_WAITING) {
 762				resendMessage(conversation.getMessages().get(i));
 763			}
 764		}
 765	}
 766
 767	private void resendMessage(Message message) {
 768		Account account = message.getConversation().getAccount();
 769		MessagePacket packet = null;
 770		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 771			Presences presences = message.getConversation().getContact()
 772					.getPresences();
 773			if (!message.getConversation().hasValidOtrSession()) {
 774				if ((message.getPresence() != null)
 775						&& (presences.has(message.getPresence()))) {
 776					message.getConversation().startOtrSession(
 777							getApplicationContext(), message.getPresence(),
 778							true);
 779				} else {
 780					if (presences.size() == 1) {
 781						String presence = presences.asStringArray()[0];
 782						message.getConversation().startOtrSession(
 783								getApplicationContext(), presence, true);
 784					}
 785				}
 786			} else {
 787				if (message.getConversation().getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 788					if (message.getType() == Message.TYPE_TEXT) {
 789						packet = mMessageGenerator.generateOtrChat(message,true);
 790					} else if (message.getType() == Message.TYPE_IMAGE) {
 791						mJingleConnectionManager.createNewConnection(message);
 792					}
 793				}
 794			}
 795		} else if (message.getType() == Message.TYPE_TEXT) {
 796			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 797				packet = mMessageGenerator.generateChat(message,true);
 798			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)||(message.getEncryption() == Message.ENCRYPTION_PGP)) {
 799				packet = mMessageGenerator.generatePgpChat(message,true);
 800			}
 801		} else if (message.getType() == Message.TYPE_IMAGE) {
 802			Presences presences = message.getConversation().getContact()
 803					.getPresences();
 804			if ((message.getPresence() != null)
 805					&& (presences.has(message.getPresence()))) {
 806				markMessage(message, Message.STATUS_OFFERED);
 807				mJingleConnectionManager.createNewConnection(message);
 808			} else {
 809				if (presences.size() == 1) {
 810					String presence = presences.asStringArray()[0];
 811					message.setPresence(presence);
 812					markMessage(message, Message.STATUS_OFFERED);
 813					mJingleConnectionManager.createNewConnection(message);
 814				}
 815			}
 816		}
 817		if (packet != null) {
 818			account.getXmppConnection().sendMessagePacket(packet);
 819			markMessage(message, Message.STATUS_SEND);
 820		}
 821	}
 822
 823	public void fetchRosterFromServer(Account account) {
 824		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 825		if (!"".equals(account.getRosterVersion())) {
 826			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 827					+ account.getRosterVersion());
 828		} else {
 829			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 830		}
 831		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 832				account.getRosterVersion());
 833		account.getXmppConnection().sendIqPacket(iqPacket,
 834				new OnIqPacketReceived() {
 835
 836					@Override
 837					public void onIqPacketReceived(final Account account,
 838							IqPacket packet) {
 839						Element roster = packet.findChild("query");
 840						if (roster != null) {
 841							account.getRoster().markAllAsNotInRoster();
 842							processRosterItems(account, roster);
 843						}
 844					}
 845				});
 846	}
 847
 848	private void mergePhoneContactsWithRoster() {
 849		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 850				new OnPhoneContactsLoadedListener() {
 851					@Override
 852					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 853						for (Account account : accounts) {
 854							account.getRoster().clearSystemAccounts();
 855						}
 856						for (Bundle phoneContact : phoneContacts) {
 857							for (Account account : accounts) {
 858								String jid = phoneContact.getString("jid");
 859								Contact contact = account.getRoster()
 860										.getContact(jid);
 861								String systemAccount = phoneContact
 862										.getInt("phoneid")
 863										+ "#"
 864										+ phoneContact.getString("lookup");
 865								contact.setSystemAccount(systemAccount);
 866								contact.setPhotoUri(phoneContact
 867										.getString("photouri"));
 868								contact.setSystemName(phoneContact
 869										.getString("displayname"));
 870							}
 871						}
 872					}
 873				});
 874	}
 875
 876	public List<Conversation> getConversations() {
 877		if (this.conversations == null) {
 878			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 879			for (Account account : this.accounts) {
 880				accountLookupTable.put(account.getUuid(), account);
 881			}
 882			this.conversations = databaseBackend
 883					.getConversations(Conversation.STATUS_AVAILABLE);
 884			for (Conversation conv : this.conversations) {
 885				Account account = accountLookupTable.get(conv.getAccountUuid());
 886				conv.setAccount(account);
 887				conv.setMessages(databaseBackend.getMessages(conv, 50));
 888			}
 889		}
 890		Collections.sort(this.conversations, new Comparator<Conversation>() {
 891			@Override
 892			public int compare(Conversation lhs, Conversation rhs) {
 893				Message left = lhs.getLatestMessage();
 894				Message right = rhs.getLatestMessage();
 895				if (left.getTimeSent() > right.getTimeSent()) {
 896					return -1;
 897				} else if (left.getTimeSent() < right.getTimeSent()) {
 898					return 1;
 899				} else {
 900					return 0;
 901				}
 902			}
 903		});
 904		return this.conversations;
 905	}
 906
 907	public List<Message> getMoreMessages(Conversation conversation,
 908			long timestamp) {
 909		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 910				timestamp);
 911		for (Message message : messages) {
 912			message.setConversation(conversation);
 913		}
 914		return messages;
 915	}
 916
 917	public List<Account> getAccounts() {
 918		return this.accounts;
 919	}
 920
 921	public Conversation findActiveConversation(Contact contact) {
 922		for (Conversation conversation : this.getConversations()) {
 923			if (conversation.getContact() == contact) {
 924				return conversation;
 925			}
 926		}
 927		return null;
 928	}
 929
 930	public Conversation findOrCreateConversation(Account account, String jid,
 931			boolean muc) {
 932		for (Conversation conv : this.getConversations()) {
 933			if ((conv.getAccount().equals(account))
 934					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 935				return conv;
 936			}
 937		}
 938		Conversation conversation = databaseBackend.findConversation(account,
 939				jid);
 940		if (conversation != null) {
 941			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 942			conversation.setAccount(account);
 943			if (muc) {
 944				conversation.setMode(Conversation.MODE_MULTI);
 945			} else {
 946				conversation.setMode(Conversation.MODE_SINGLE);
 947			}
 948			conversation.setMessages(databaseBackend.getMessages(conversation,
 949					50));
 950			this.databaseBackend.updateConversation(conversation);
 951		} else {
 952			String conversationName;
 953			Contact contact = account.getRoster().getContact(jid);
 954			if (contact != null) {
 955				conversationName = contact.getDisplayName();
 956			} else {
 957				conversationName = jid.split("@")[0];
 958			}
 959			if (muc) {
 960				conversation = new Conversation(conversationName, account, jid,
 961						Conversation.MODE_MULTI);
 962			} else {
 963				conversation = new Conversation(conversationName, account, jid,
 964						Conversation.MODE_SINGLE);
 965			}
 966			this.databaseBackend.createConversation(conversation);
 967		}
 968		this.conversations.add(conversation);
 969		if ((account.getStatus() == Account.STATUS_ONLINE)
 970				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
 971			joinMuc(conversation);
 972		}
 973		if (this.convChangedListener != null) {
 974			this.convChangedListener.onConversationListChanged();
 975		}
 976		return conversation;
 977	}
 978
 979	public void archiveConversation(Conversation conversation) {
 980		if (conversation.getMode() == Conversation.MODE_MULTI) {
 981			leaveMuc(conversation);
 982		} else {
 983			conversation.endOtrIfNeeded();
 984		}
 985		this.databaseBackend.updateConversation(conversation);
 986		this.conversations.remove(conversation);
 987		if (this.convChangedListener != null) {
 988			this.convChangedListener.onConversationListChanged();
 989		}
 990	}
 991
 992	public void clearConversationHistory(Conversation conversation) {
 993		this.databaseBackend.deleteMessagesInConversation(conversation);
 994		this.fileBackend.removeFiles(conversation);
 995		conversation.getMessages().clear();
 996		if (this.convChangedListener != null) {
 997			this.convChangedListener.onConversationListChanged();
 998		}
 999	}
1000
1001	public int getConversationCount() {
1002		return this.databaseBackend.getConversationCount();
1003	}
1004
1005	public void createAccount(Account account) {
1006		databaseBackend.createAccount(account);
1007		this.accounts.add(account);
1008		this.reconnectAccount(account, false);
1009		if (accountChangedListener != null)
1010			accountChangedListener.onAccountListChangedListener();
1011	}
1012
1013	public void updateAccount(Account account) {
1014		this.statusListener.onStatusChanged(account);
1015		databaseBackend.updateAccount(account);
1016		reconnectAccount(account, false);
1017		if (accountChangedListener != null) {
1018			accountChangedListener.onAccountListChangedListener();
1019		}
1020		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1021	}
1022
1023	public void deleteAccount(Account account) {
1024		if (account.getXmppConnection() != null) {
1025			this.disconnect(account, true);
1026		}
1027		databaseBackend.deleteAccount(account);
1028		this.accounts.remove(account);
1029		if (accountChangedListener != null) {
1030			accountChangedListener.onAccountListChangedListener();
1031		}
1032		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1033	}
1034
1035	public void setOnConversationListChangedListener(
1036			OnConversationListChangedListener listener) {
1037		this.convChangedListener = listener;
1038		this.convChangedListenerCount++;
1039	}
1040
1041	public void removeOnConversationListChangedListener() {
1042		this.convChangedListenerCount--;
1043		if (this.convChangedListenerCount == 0) {
1044			this.convChangedListener = null;
1045		}
1046	}
1047
1048	public void setOnAccountListChangedListener(
1049			OnAccountListChangedListener listener) {
1050		this.accountChangedListener = listener;
1051	}
1052
1053	public void removeOnAccountListChangedListener() {
1054		this.accountChangedListener = null;
1055	}
1056
1057	public void connectMultiModeConversations(Account account) {
1058		List<Conversation> conversations = getConversations();
1059		for (int i = 0; i < conversations.size(); i++) {
1060			Conversation conversation = conversations.get(i);
1061			if ((conversation.getMode() == Conversation.MODE_MULTI)
1062					&& (conversation.getAccount() == account)) {
1063				joinMuc(conversation);
1064			}
1065		}
1066	}
1067
1068	public void joinMuc(Conversation conversation) {
1069		Account account = conversation.getAccount();
1070		String[] mucParts = conversation.getContactJid().split("/");
1071		String muc;
1072		String nick;
1073		if (mucParts.length == 2) {
1074			muc = mucParts[0];
1075			nick = mucParts[1];
1076		} else {
1077			muc = mucParts[0];
1078			nick = account.getUsername();
1079		}
1080		PresencePacket packet = new PresencePacket();
1081		packet.setAttribute("to", muc + "/" + nick);
1082		Element x = new Element("x");
1083		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1084		String sig = account.getPgpSignature();
1085		if (sig != null) {
1086			packet.addChild("status").setContent("online");
1087			packet.addChild("x", "jabber:x:signed").setContent(sig);
1088		}
1089		if (conversation.getMessages().size() != 0) {
1090			final SimpleDateFormat mDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",Locale.US);
1091			mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1092			Date date = new Date(conversation.getLatestMessage().getTimeSent() + 1000);
1093			x.addChild("history").setAttribute("since",mDateFormat.format(date));
1094		}
1095		packet.addChild(x);
1096		account.getXmppConnection().sendPresencePacket(packet);
1097	}
1098
1099	private OnRenameListener renameListener = null;
1100
1101	public void setOnRenameListener(OnRenameListener listener) {
1102		this.renameListener = listener;
1103	}
1104
1105	public void renameInMuc(final Conversation conversation, final String nick) {
1106		final MucOptions options = conversation.getMucOptions();
1107		if (options.online()) {
1108			Account account = conversation.getAccount();
1109			options.setOnRenameListener(new OnRenameListener() {
1110
1111				@Override
1112				public void onRename(boolean success) {
1113					if (renameListener != null) {
1114						renameListener.onRename(success);
1115					}
1116					if (success) {
1117						String jid = conversation.getContactJid().split("/")[0]
1118								+ "/" + nick;
1119						conversation.setContactJid(jid);
1120						databaseBackend.updateConversation(conversation);
1121					}
1122				}
1123			});
1124			options.flagAboutToRename();
1125			PresencePacket packet = new PresencePacket();
1126			packet.setAttribute("to",
1127					conversation.getContactJid().split("/")[0] + "/" + nick);
1128			packet.setAttribute("from", conversation.getAccount().getFullJid());
1129
1130			String sig = account.getPgpSignature();
1131			if (sig != null) {
1132				packet.addChild("status").setContent("online");
1133				packet.addChild("x", "jabber:x:signed").setContent(sig);
1134			}
1135
1136			account.getXmppConnection().sendPresencePacket(packet, null);
1137		} else {
1138			String jid = conversation.getContactJid().split("/")[0] + "/"
1139					+ nick;
1140			conversation.setContactJid(jid);
1141			databaseBackend.updateConversation(conversation);
1142			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1143				joinMuc(conversation);
1144			}
1145		}
1146	}
1147
1148	public void leaveMuc(Conversation conversation) {
1149		PresencePacket packet = new PresencePacket();
1150		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1151				+ "/" + conversation.getMucOptions().getNick());
1152		packet.setAttribute("from", conversation.getAccount().getFullJid());
1153		packet.setAttribute("type", "unavailable");
1154		Log.d(LOGTAG, "send leaving muc " + packet);
1155		conversation.getAccount().getXmppConnection()
1156				.sendPresencePacket(packet);
1157		conversation.getMucOptions().setOffline();
1158	}
1159
1160	public void disconnect(Account account, boolean force) {
1161		if ((account.getStatus() == Account.STATUS_ONLINE)
1162				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1163			if (!force) {
1164				List<Conversation> conversations = getConversations();
1165				for (int i = 0; i < conversations.size(); i++) {
1166					Conversation conversation = conversations.get(i);
1167					if (conversation.getAccount() == account) {
1168						if (conversation.getMode() == Conversation.MODE_MULTI) {
1169							leaveMuc(conversation);
1170						} else {
1171							conversation.endOtrIfNeeded();
1172						}
1173					}
1174				}
1175			}
1176			account.getXmppConnection().disconnect(force);
1177		}
1178	}
1179
1180	@Override
1181	public IBinder onBind(Intent intent) {
1182		return mBinder;
1183	}
1184
1185	public void updateMessage(Message message) {
1186		databaseBackend.updateMessage(message);
1187	}
1188
1189	protected void syncDirtyContacts(Account account) {
1190		for (Contact contact : account.getRoster().getContacts()) {
1191			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1192				pushContactToServer(contact);
1193			}
1194			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1195				Log.d(LOGTAG, "dirty delete");
1196				deleteContactOnServer(contact);
1197			}
1198		}
1199	}
1200
1201	public void createContact(Contact contact) {
1202		SharedPreferences sharedPref = getPreferences();
1203		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1204		if (autoGrant) {
1205			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1206			contact.setOption(Contact.Options.ASKING);
1207		}
1208		pushContactToServer(contact);
1209	}
1210
1211	public void onOtrSessionEstablished(Conversation conversation) {
1212		Account account = conversation.getAccount();
1213		List<Message> messages = conversation.getMessages();
1214		Session otrSession = conversation.getOtrSession();
1215		Log.d(LOGTAG, account.getJid() + " otr session established with "
1216				+ conversation.getContactJid() + "/"
1217				+ otrSession.getSessionID().getUserID());
1218		for (int i = 0; i < messages.size(); ++i) {
1219			Message msg = messages.get(i);
1220			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1221					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1222				msg.setPresence(otrSession.getSessionID().getUserID());
1223				if (msg.getType() == Message.TYPE_TEXT) {
1224					MessagePacket outPacket = mMessageGenerator.generateOtrChat(msg,true);
1225					if (outPacket!=null) {
1226						msg.setStatus(Message.STATUS_SEND);
1227						databaseBackend.updateMessage(msg);
1228						account.getXmppConnection().sendMessagePacket(outPacket);
1229					}
1230				} else if (msg.getType() == Message.TYPE_IMAGE) {
1231					mJingleConnectionManager.createNewConnection(msg);
1232				}
1233			}
1234		}
1235		updateUi(conversation, false);
1236	}
1237
1238	public boolean renewSymmetricKey(Conversation conversation) {
1239		Account account = conversation.getAccount();
1240		byte[] symmetricKey = new byte[32];
1241		this.mRandom.nextBytes(symmetricKey);
1242		Session otrSession = conversation.getOtrSession();
1243		if (otrSession != null) {
1244			MessagePacket packet = new MessagePacket();
1245			packet.setType(MessagePacket.TYPE_CHAT);
1246			packet.setFrom(account.getFullJid());
1247			packet.addChild("private", "urn:xmpp:carbons:2");
1248			packet.addChild("no-copy", "urn:xmpp:hints");
1249			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1250					+ otrSession.getSessionID().getUserID());
1251			try {
1252				packet.setBody(otrSession
1253						.transformSending(CryptoHelper.FILETRANSFER
1254								+ CryptoHelper.bytesToHex(symmetricKey)));
1255				account.getXmppConnection().sendMessagePacket(packet);
1256				conversation.setSymmetricKey(symmetricKey);
1257				return true;
1258			} catch (OtrException e) {
1259				return false;
1260			}
1261		}
1262		return false;
1263	}
1264
1265	public void pushContactToServer(Contact contact) {
1266		contact.resetOption(Contact.Options.DIRTY_DELETE);
1267		contact.setOption(Contact.Options.DIRTY_PUSH);
1268		Account account = contact.getAccount();
1269		if (account.getStatus() == Account.STATUS_ONLINE) {
1270			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1271			iq.query("jabber:iq:roster").addChild(contact.asElement());
1272			account.getXmppConnection().sendIqPacket(iq, null);
1273			if (contact.getOption(Contact.Options.ASKING)) {
1274				requestPresenceUpdatesFrom(contact);
1275			}
1276			if (contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1277				Log.d("xmppService", "contact had pending subscription");
1278				sendPresenceUpdatesTo(contact);
1279			}
1280		}
1281	}
1282
1283	public void deleteContactOnServer(Contact contact) {
1284		contact.resetOption(Contact.Options.DIRTY_PUSH);
1285		contact.setOption(Contact.Options.DIRTY_DELETE);
1286		Account account = contact.getAccount();
1287		if (account.getStatus() == Account.STATUS_ONLINE) {
1288			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1289			Element item = iq.query("jabber:iq:roster").addChild("item");
1290			item.setAttribute("jid", contact.getJid());
1291			item.setAttribute("subscription", "remove");
1292			account.getXmppConnection().sendIqPacket(iq, null);
1293		}
1294	}
1295
1296	public void requestPresenceUpdatesFrom(Contact contact) {
1297		PresencePacket packet = new PresencePacket();
1298		packet.setAttribute("type", "subscribe");
1299		packet.setAttribute("to", contact.getJid());
1300		packet.setAttribute("from", contact.getAccount().getJid());
1301		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1302	}
1303
1304	public void stopPresenceUpdatesFrom(Contact contact) {
1305		PresencePacket packet = new PresencePacket();
1306		packet.setAttribute("type", "unsubscribe");
1307		packet.setAttribute("to", contact.getJid());
1308		packet.setAttribute("from", contact.getAccount().getJid());
1309		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1310	}
1311
1312	public void stopPresenceUpdatesTo(Contact contact) {
1313		PresencePacket packet = new PresencePacket();
1314		packet.setAttribute("type", "unsubscribed");
1315		packet.setAttribute("to", contact.getJid());
1316		packet.setAttribute("from", contact.getAccount().getJid());
1317		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1318	}
1319
1320	public void sendPresenceUpdatesTo(Contact contact) {
1321		PresencePacket packet = new PresencePacket();
1322		packet.setAttribute("type", "subscribed");
1323		packet.setAttribute("to", contact.getJid());
1324		packet.setAttribute("from", contact.getAccount().getJid());
1325		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1326	}
1327
1328	public void sendPresence(Account account) {
1329		PresencePacket packet = new PresencePacket();
1330		packet.setAttribute("from", account.getFullJid());
1331		String sig = account.getPgpSignature();
1332		if (sig != null) {
1333			packet.addChild("status").setContent("online");
1334			packet.addChild("x", "jabber:x:signed").setContent(sig);
1335		}
1336		account.getXmppConnection().sendPresencePacket(packet);
1337	}
1338
1339	public void updateConversation(Conversation conversation) {
1340		this.databaseBackend.updateConversation(conversation);
1341	}
1342
1343	public void removeOnTLSExceptionReceivedListener() {
1344		this.tlsException = null;
1345	}
1346
1347	public void reconnectAccount(final Account account, final boolean force) {
1348		new Thread(new Runnable() {
1349
1350			@Override
1351			public void run() {
1352				if (account.getXmppConnection() != null) {
1353					disconnect(account, force);
1354				}
1355				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1356					if (account.getXmppConnection() == null) {
1357						account.setXmppConnection(createConnection(account));
1358					}
1359					Thread thread = new Thread(account.getXmppConnection());
1360					thread.start();
1361					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1362				}
1363			}
1364		}).start();
1365	}
1366
1367	public void sendConversationSubject(Conversation conversation,
1368			String subject) {
1369		MessagePacket packet = new MessagePacket();
1370		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1371		packet.setTo(conversation.getContactJid().split("/")[0]);
1372		Element subjectChild = new Element("subject");
1373		subjectChild.setContent(subject);
1374		packet.addChild(subjectChild);
1375		packet.setFrom(conversation.getAccount().getJid());
1376		Account account = conversation.getAccount();
1377		if (account.getStatus() == Account.STATUS_ONLINE) {
1378			account.getXmppConnection().sendMessagePacket(packet);
1379		}
1380	}
1381
1382	public void inviteToConference(Conversation conversation,
1383			List<Contact> contacts) {
1384		for (Contact contact : contacts) {
1385			MessagePacket packet = new MessagePacket();
1386			packet.setTo(conversation.getContactJid().split("/")[0]);
1387			packet.setFrom(conversation.getAccount().getFullJid());
1388			Element x = new Element("x");
1389			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1390			Element invite = new Element("invite");
1391			invite.setAttribute("to", contact.getJid());
1392			x.addChild(invite);
1393			packet.addChild(x);
1394			Log.d(LOGTAG, packet.toString());
1395			conversation.getAccount().getXmppConnection()
1396					.sendMessagePacket(packet);
1397		}
1398
1399	}
1400
1401	public boolean markMessage(Account account, String recipient, String uuid,
1402			int status) {
1403		for (Conversation conversation : getConversations()) {
1404			if (conversation.getContactJid().equals(recipient)
1405					&& conversation.getAccount().equals(account)) {
1406				return markMessage(conversation, uuid, status);
1407			}
1408		}
1409		return false;
1410	}
1411
1412	public boolean markMessage(Conversation conversation, String uuid,
1413			int status) {
1414		for (Message message : conversation.getMessages()) {
1415			if (message.getUuid().equals(uuid)) {
1416				markMessage(message, status);
1417				return true;
1418			}
1419		}
1420		return false;
1421	}
1422
1423	public void markMessage(Message message, int status) {
1424		message.setStatus(status);
1425		databaseBackend.updateMessage(message);
1426		if (convChangedListener != null) {
1427			convChangedListener.onConversationListChanged();
1428		}
1429	}
1430
1431	public SharedPreferences getPreferences() {
1432		return PreferenceManager
1433				.getDefaultSharedPreferences(getApplicationContext());
1434	}
1435
1436	public boolean confirmMessages() {
1437		return getPreferences().getBoolean("confirm_messages", true);
1438	}
1439
1440	public void updateUi(Conversation conversation, boolean notify) {
1441		if (convChangedListener != null) {
1442			convChangedListener.onConversationListChanged();
1443		} else {
1444			UIHelper.updateNotification(getApplicationContext(),
1445					getConversations(), conversation, notify);
1446		}
1447	}
1448
1449	public Account findAccountByJid(String accountJid) {
1450		for (Account account : this.accounts) {
1451			if (account.getJid().equals(accountJid)) {
1452				return account;
1453			}
1454		}
1455		return null;
1456	}
1457
1458	public void markRead(Conversation conversation) {
1459		conversation.markRead(this);
1460	}
1461
1462	public void sendConfirmMessage(Account account, String to, String id) {
1463		MessagePacket receivedPacket = new MessagePacket();
1464		receivedPacket.setType(MessagePacket.TYPE_NORMAL);
1465		receivedPacket.setTo(to);
1466		receivedPacket.setFrom(account.getFullJid());
1467		Element received = receivedPacket.addChild("displayed",
1468				"urn:xmpp:chat-markers:0");
1469		received.setAttribute("id", id);
1470		account.getXmppConnection().sendMessagePacket(receivedPacket);
1471	}
1472
1473	public SecureRandom getRNG() {
1474		return this.mRandom;
1475	}
1476
1477	public PowerManager getPowerManager() {
1478		return this.pm;
1479	}
1480
1481	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1482		if (account.getStatus() == Account.STATUS_ONLINE) {
1483			MessagePacket error = this.mMessageGenerator.generateNotAcceptable(packet);
1484			account.getXmppConnection().sendMessagePacket(error);
1485		}
1486	}
1487	
1488	public void syncRosterToDisk(final Account account) {
1489		new Thread(new Runnable() {
1490			
1491			@Override
1492			public void run() {
1493				databaseBackend.writeRoster(account.getRoster());
1494			}
1495		}).start();
1496		
1497	}
1498	
1499	public List<String> getKnownHosts() {
1500		List<String> hosts = new ArrayList<String>();
1501		for(Account account : getAccounts()) {
1502			if (!hosts.contains(account.getServer())) {
1503				hosts.add(account.getServer());
1504			}
1505			for(Contact contact : account.getRoster().getContacts()) {
1506				if (contact.showInRoster()) {
1507					String server = contact.getServer();
1508					if (server!=null && !hosts.contains(server)) {
1509						hosts.add(server);
1510					}
1511				}
1512			}
1513		}
1514		return hosts;
1515	}
1516}