XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.io.File;
   4import java.text.ParseException;
   5import java.text.SimpleDateFormat;
   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.Random;
  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;
  20
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  23import eu.siacs.conversations.entities.Account;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.utils.ExceptionHelper;
  37import eu.siacs.conversations.utils.MessageParser;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  46import eu.siacs.conversations.xmpp.OnStatusChanged;
  47import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  48import eu.siacs.conversations.xmpp.XmppConnection;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  51import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  52import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  53import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  54import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  55import android.app.AlarmManager;
  56import android.app.PendingIntent;
  57import android.app.Service;
  58import android.content.Context;
  59import android.content.Intent;
  60import android.content.SharedPreferences;
  61import android.database.ContentObserver;
  62import android.database.DatabaseUtils;
  63import android.net.ConnectivityManager;
  64import android.net.NetworkInfo;
  65import android.net.Uri;
  66import android.os.Binder;
  67import android.os.Bundle;
  68import android.os.IBinder;
  69import android.os.PowerManager;
  70import android.os.PowerManager.WakeLock;
  71import android.os.SystemClock;
  72import android.preference.PreferenceManager;
  73import android.provider.ContactsContract;
  74import android.util.Log;
  75
  76public class XmppConnectionService extends Service {
  77
  78	protected static final String LOGTAG = "xmppService";
  79	public DatabaseBackend databaseBackend;
  80	private FileBackend fileBackend;
  81
  82	public long startDate;
  83
  84	private static final int PING_MAX_INTERVAL = 300;
  85	private static final int PING_MIN_INTERVAL = 10;
  86	private static final int PING_TIMEOUT = 5;
  87	private static final int CONNECT_TIMEOUT = 60;
  88	private static final long CARBON_GRACE_PERIOD = 60000L;
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  93	
  94	public OnConversationListChangedListener convChangedListener = null;
  95	private int convChangedListenerCount = 0;
  96	private OnAccountListChangedListener accountChangedListener = null;
  97	private OnTLSExceptionReceived tlsException = null;
  98
  99	public void setOnTLSExceptionReceivedListener(
 100			OnTLSExceptionReceived listener) {
 101		tlsException = listener;
 102	}
 103
 104	private Random mRandom = new Random(System.currentTimeMillis());
 105
 106	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 107
 108	private ContentObserver contactObserver = new ContentObserver(null) {
 109		@Override
 110		public void onChange(boolean selfChange) {
 111			super.onChange(selfChange);
 112			Log.d(LOGTAG, "contact list has changed");
 113			mergePhoneContactsWithRoster(null);
 114		}
 115	};
 116
 117	private XmppConnectionService service = this;
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if(PreferenceManager
 128					.getDefaultSharedPreferences(getApplicationContext())
 129					.getBoolean("notification_grace_period_after_carbon_received", true)){
 130				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 131			}
 132
 133			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 134				String pgpBody = MessageParser.getPgpBody(packet);
 135				if (pgpBody != null) {
 136					message = MessageParser.parsePgpChat(pgpBody, packet,
 137							account, service);
 138					message.markUnread();
 139				} else if (packet.hasChild("body")
 140						&& (packet.getBody().startsWith("?OTR"))) {
 141					message = MessageParser.parseOtrChat(packet, account,
 142							service);
 143					if (message != null) {
 144						message.markUnread();
 145					}
 146				} else if (packet.hasChild("body")) {
 147					message = MessageParser.parsePlainTextChat(packet, account,
 148							service);
 149					message.markUnread();
 150				} else if (packet.hasChild("received")
 151						|| (packet.hasChild("sent"))) {
 152					message = MessageParser.parseCarbonMessage(packet, account,
 153							service);
 154					if (message != null) {
 155						if (message.getStatus() == Message.STATUS_SEND) {
 156							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 157							notify = false;
 158							message.getConversation().markRead();
 159						} else {
 160							message.markUnread();
 161						}
 162					}
 163				}
 164
 165			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 166				message = MessageParser
 167						.parseGroupchat(packet, account, service);
 168				if (message != null) {
 169					if (message.getStatus() == Message.STATUS_RECIEVED) {
 170						message.markUnread();
 171					} else {
 172						message.getConversation().markRead();
 173						notify = false;
 174					}
 175				}
 176			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 177				MessageParser.parseError(packet, account, service);
 178				return;
 179			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 180				if (packet.hasChild("x")) {
 181					Element x = packet.findChild("x");
 182					if (x.hasChild("invite")) {
 183						findOrCreateConversation(account, packet.getFrom(),
 184								true);
 185						if (convChangedListener != null) {
 186							convChangedListener.onConversationListChanged();
 187						}
 188						Log.d(LOGTAG,
 189								"invitation received to " + packet.getFrom());
 190					}
 191
 192				} else {
 193					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 194				}
 195			}
 196			if ((message == null) || (message.getBody() == null)) {
 197				return;
 198			}
 199			if (packet.hasChild("delay")) {
 200				try {
 201					String stamp = packet.findChild("delay").getAttribute(
 202							"stamp");
 203					stamp = stamp.replace("Z", "+0000");
 204					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 205							.parse(stamp);
 206					message.setTime(date.getTime());
 207				} catch (ParseException e) {
 208					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 209				}
 210			}
 211			Conversation conversation = message.getConversation();
 212			conversation.getMessages().add(message);
 213			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 214				databaseBackend.createMessage(message);
 215			}
 216			if (convChangedListener != null) {
 217				convChangedListener.onConversationListChanged();
 218			} else {
 219				UIHelper.updateNotification(getApplicationContext(),
 220						getConversations(), message.getConversation(), notify);
 221			}
 222		}
 223	};
 224	private OnStatusChanged statusListener = new OnStatusChanged() {
 225
 226		@Override
 227		public void onStatusChanged(Account account) {
 228			if (accountChangedListener != null) {
 229				accountChangedListener.onAccountListChangedListener();
 230			}
 231			if (account.getStatus() == Account.STATUS_ONLINE) {
 232				List<Conversation> conversations = getConversations();
 233				for (int i = 0; i < conversations.size(); ++i) {
 234					if (conversations.get(i).getAccount() == account) {
 235						sendUnsendMessages(conversations.get(i));
 236					}
 237				}
 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 {
 249				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 250			}
 251		}
 252	};
 253
 254	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 255
 256		@Override
 257		public void onPresencePacketReceived(Account account,
 258				PresencePacket packet) {
 259			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 260				Conversation muc = findMuc(
 261						packet.getAttribute("from").split("/")[0], account);
 262				if (muc != null) {
 263					muc.getMucOptions().processPacket(packet);
 264				} else {
 265					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 266				}
 267			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 268				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 269				if (muc != null) {
 270					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 271					int error = muc.getMucOptions().getError();
 272					muc.getMucOptions().processPacket(packet);
 273					if ((muc.getMucOptions().getError() != error)
 274							&& (convChangedListener != null)) {
 275						Log.d(LOGTAG, "muc error status changed");
 276						convChangedListener.onConversationListChanged();
 277					}
 278				}
 279			} else {
 280				String[] fromParts = packet.getAttribute("from").split("/");
 281				String type = packet.getAttribute("type");
 282				if (fromParts[0].equals(account.getJid())) {
 283					if (fromParts.length==2) {
 284						if (type == null) {
 285							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 286						} else if (type.equals("unavailable")) {
 287							account.removePresence(fromParts[1]);
 288						}
 289					}
 290						
 291				} else {
 292					Contact contact = findContact(account, fromParts[0]);
 293					if (contact == null) {
 294						// most likely roster not synced
 295						return;
 296					}
 297					if (type == null) {
 298						if (fromParts.length == 2) {
 299							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 300							PgpEngine pgp = getPgpEngine();
 301							if (pgp != null) {
 302								Element x = packet.findChild("x","jabber:x:signed");
 303								if (x != null) {
 304									try {
 305										Element status = packet.findChild("status");
 306										String msg;
 307										if (status!=null) {
 308											msg = status.getContent();
 309										} else {
 310											msg = "";
 311										}
 312										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 313														.getContent()));
 314									} catch (OpenPgpException e) {
 315										Log.d(LOGTAG, "faulty pgp. just ignore");
 316									}
 317								}
 318							}
 319							databaseBackend.updateContact(contact);
 320						} else {
 321							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 322						}
 323					} else if (type.equals("unavailable")) {
 324						if (fromParts.length != 2) {
 325							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 326						} else {
 327							contact.removePresence(fromParts[1]);
 328							databaseBackend.updateContact(contact);
 329						}
 330					} else if (type.equals("subscribe")) {
 331						if (contact
 332								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 333							sendPresenceUpdatesTo(contact);
 334							contact.setSubscriptionOption(Contact.Subscription.FROM);
 335							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 336							replaceContactInConversation(contact.getJid(),
 337									contact);
 338							databaseBackend.updateContact(contact);
 339							if ((contact
 340									.getSubscriptionOption(Contact.Subscription.ASKING))
 341									&& (!contact
 342											.getSubscriptionOption(Contact.Subscription.TO))) {
 343								requestPresenceUpdatesFrom(contact);
 344							}
 345						} else {
 346							// TODO: ask user to handle it maybe
 347						}
 348					} else {
 349						//Log.d(LOGTAG, packet.toString());
 350					}
 351					replaceContactInConversation(contact.getJid(), contact);
 352				}
 353			}
 354		}
 355	};
 356
 357	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 358
 359		@Override
 360		public void onIqPacketReceived(Account account, IqPacket packet) {
 361			if (packet.hasChild("query")) {
 362				Element query = packet.findChild("query");
 363				String xmlns = query.getAttribute("xmlns");
 364				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 365					processRosterItems(account, query);
 366					mergePhoneContactsWithRoster(null);
 367				}
 368			}
 369		}
 370	};
 371	
 372	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 373		
 374		@Override
 375		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 376			mJingleConnectionManager.deliverPacket(account, packet);
 377		}
 378	};
 379
 380	private OpenPgpServiceConnection pgpServiceConnection;
 381	private PgpEngine mPgpEngine = null;
 382	private Intent pingIntent;
 383	private PendingIntent pendingPingIntent = null;
 384	private WakeLock wakeLock;
 385	private PowerManager pm;
 386
 387	public PgpEngine getPgpEngine() {
 388		if (pgpServiceConnection.isBound()) {
 389			if (this.mPgpEngine == null) {
 390				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 391						getApplicationContext(),
 392						pgpServiceConnection.getService()));
 393			}
 394			return mPgpEngine;
 395		} else {
 396			return null;
 397		}
 398
 399	}
 400
 401	public FileBackend getFileBackend() {
 402		return this.fileBackend;
 403	}
 404	
 405	public Message attachImageToConversation(Conversation conversation, String presence, Uri uri) {
 406		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 407		message.setPresence(presence);
 408		message.setType(Message.TYPE_IMAGE);
 409		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 410		Log.d(LOGTAG,"new file"+file.getAbsolutePath());
 411		conversation.getMessages().add(message);
 412		databaseBackend.createMessage(message);
 413		sendMessage(message, null);
 414		return message;
 415	}
 416	
 417	
 418	protected Conversation findMuc(String name, Account account) {
 419		for (Conversation conversation : this.conversations) {
 420			if (conversation.getContactJid().split("/")[0].equals(name)
 421					&& (conversation.getAccount() == account)) {
 422				return conversation;
 423			}
 424		}
 425		return null;
 426	}
 427
 428	private void processRosterItems(Account account, Element elements) {
 429		String version = elements.getAttribute("ver");
 430		if (version != null) {
 431			account.setRosterVersion(version);
 432			databaseBackend.updateAccount(account);
 433		}
 434		for (Element item : elements.getChildren()) {
 435			if (item.getName().equals("item")) {
 436				String jid = item.getAttribute("jid");
 437				String subscription = item.getAttribute("subscription");
 438				Contact contact = databaseBackend.findContact(account, jid);
 439				if (contact == null) {
 440					if (!subscription.equals("remove")) {
 441						String name = item.getAttribute("name");
 442						if (name == null) {
 443							name = jid.split("@")[0];
 444						}
 445						contact = new Contact(account, name, jid, null);
 446						contact.parseSubscriptionFromElement(item);
 447						databaseBackend.createContact(contact);
 448					}
 449				} else {
 450					if (subscription.equals("remove")) {
 451						databaseBackend.deleteContact(contact);
 452						replaceContactInConversation(contact.getJid(), null);
 453					} else {
 454						contact.parseSubscriptionFromElement(item);
 455						databaseBackend.updateContact(contact);
 456						replaceContactInConversation(contact.getJid(), contact);
 457					}
 458				}
 459			}
 460		}
 461	}
 462
 463	private void replaceContactInConversation(String jid, Contact contact) {
 464		List<Conversation> conversations = getConversations();
 465		for (int i = 0; i < conversations.size(); ++i) {
 466			if ((conversations.get(i).getContactJid().equals(jid))) {
 467				conversations.get(i).setContact(contact);
 468				break;
 469			}
 470		}
 471	}
 472
 473	public class XmppConnectionBinder extends Binder {
 474		public XmppConnectionService getService() {
 475			return XmppConnectionService.this;
 476		}
 477	}
 478
 479	@Override
 480	public int onStartCommand(Intent intent, int flags, int startId) {
 481		this.wakeLock.acquire();
 482		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 483		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 484				.getSystemService(Context.CONNECTIVITY_SERVICE);
 485		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 486		boolean isConnected = activeNetwork != null
 487				&& activeNetwork.isConnected();
 488
 489		for (Account account : accounts) {
 490			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 491				if (!isConnected) {
 492					account.setStatus(Account.STATUS_NO_INTERNET);
 493					if (statusListener != null) {
 494						statusListener.onStatusChanged(account);
 495					}
 496				} else {
 497					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 498						account.setStatus(Account.STATUS_OFFLINE);
 499						if (statusListener != null) {
 500							statusListener.onStatusChanged(account);
 501						}
 502					}
 503
 504					// TODO 3 remaining cases
 505					if (account.getStatus() == Account.STATUS_ONLINE) {
 506						long lastReceived = account.getXmppConnection().lastPaketReceived;
 507						long lastSent = account.getXmppConnection().lastPingSent;
 508						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 509							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 510							this.reconnectAccount(account, true);
 511						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 512							account.getXmppConnection().sendPing();
 513							account.getXmppConnection().lastPingSent = SystemClock
 514									.elapsedRealtime();
 515							this.scheduleWakeupCall(2, false);
 516						}
 517					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 518						if (account.getXmppConnection() == null) {
 519							account.setXmppConnection(this
 520									.createConnection(account));
 521						}
 522						account.getXmppConnection().lastPingSent = SystemClock
 523								.elapsedRealtime();
 524						new Thread(account.getXmppConnection()).start();
 525					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 526							&& ((SystemClock.elapsedRealtime() - account
 527									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 528						Log.d(LOGTAG, account.getJid()
 529								+ ": time out during connect reconnecting");
 530						reconnectAccount(account, true);
 531					} else {
 532						Log.d(LOGTAG,
 533								"seconds since last connect:"
 534										+ ((SystemClock.elapsedRealtime() - account
 535												.getXmppConnection().lastConnect) / 1000));
 536						Log.d(LOGTAG,
 537								account.getJid() + ": status="
 538										+ account.getStatus());
 539						// TODO notify user of ssl cert problem or auth problem
 540						// or what ever
 541					}
 542					// in any case. reschedule wakup call
 543					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 544				}
 545				if (accountChangedListener != null) {
 546					accountChangedListener.onAccountListChangedListener();
 547				}
 548			}
 549		}
 550		if (wakeLock.isHeld()) {
 551			wakeLock.release();
 552		}
 553		return START_STICKY;
 554	}
 555
 556	@Override
 557	public void onCreate() {
 558		ExceptionHelper.init(getApplicationContext());
 559		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 560		this.fileBackend = new FileBackend(getApplicationContext());
 561		this.accounts = databaseBackend.getAccounts();
 562
 563		this.getConversations();
 564		
 565		getContentResolver().registerContentObserver(
 566				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 567		this.pgpServiceConnection = new OpenPgpServiceConnection(
 568				getApplicationContext(), "org.sufficientlysecure.keychain");
 569		this.pgpServiceConnection.bindToService();
 570
 571		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 572		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 573				"XmppConnectionService");
 574	}
 575
 576	@Override
 577	public void onDestroy() {
 578		super.onDestroy();
 579		for (Account account : accounts) {
 580			if (account.getXmppConnection() != null) {
 581				disconnect(account, true);
 582			}
 583		}
 584	}
 585
 586	protected void scheduleWakeupCall(int seconds, boolean ping) {
 587		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 588		Context context = getApplicationContext();
 589		AlarmManager alarmManager = (AlarmManager) context
 590				.getSystemService(Context.ALARM_SERVICE);
 591
 592		if (ping) {
 593			if (this.pingIntent == null) {
 594				this.pingIntent = new Intent(context, EventReceiver.class);
 595				this.pingIntent.setAction("ping");
 596				this.pingIntent.putExtra("time", timeToWake);
 597				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 598						this.pingIntent, 0);
 599				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 600						timeToWake, pendingPingIntent);
 601				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 602			} else {
 603				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 604				if (scheduledTime < SystemClock.elapsedRealtime()
 605						|| (scheduledTime > timeToWake)) {
 606					this.pingIntent.putExtra("time", timeToWake);
 607					alarmManager.cancel(this.pendingPingIntent);
 608					this.pendingPingIntent = PendingIntent.getBroadcast(
 609							context, 0, this.pingIntent, 0);
 610					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 611							timeToWake, pendingPingIntent);
 612					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 613				}
 614			}
 615		} else {
 616			Intent intent = new Intent(context, EventReceiver.class);
 617			intent.setAction("ping_check");
 618			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 619					intent, 0);
 620			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 621					alarmIntent);
 622		}
 623
 624	}
 625
 626	public XmppConnection createConnection(Account account) {
 627		SharedPreferences sharedPref = PreferenceManager
 628				.getDefaultSharedPreferences(getApplicationContext());
 629		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 630		XmppConnection connection = new XmppConnection(account, this.pm);
 631		connection.setOnMessagePacketReceivedListener(this.messageListener);
 632		connection.setOnStatusChangedListener(this.statusListener);
 633		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 634		connection
 635				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 636		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 637		connection
 638				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 639
 640					@Override
 641					public void onTLSExceptionReceived(String fingerprint,
 642							Account account) {
 643						Log.d(LOGTAG, "tls exception arrived in service");
 644						if (tlsException != null) {
 645							tlsException.onTLSExceptionReceived(fingerprint,
 646									account);
 647						}
 648					}
 649				});
 650		connection.setOnBindListener(new OnBindListener() {
 651
 652			@Override
 653			public void onBind(Account account) {
 654				databaseBackend.clearPresences(account);
 655				account.clearPresences(); // self presences
 656				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 657					updateRoster(account, null);
 658				}
 659				connectMultiModeConversations(account);
 660				if (convChangedListener != null) {
 661					convChangedListener.onConversationListChanged();
 662				}
 663			}
 664		});
 665		return connection;
 666	}
 667
 668	synchronized public void sendMessage(Message message, String presence) {
 669		Account account = message.getConversation().getAccount();
 670		Conversation conv = message.getConversation();
 671		MessagePacket packet = null;
 672		boolean saveInDb = false;
 673		boolean addToConversation = false;
 674		boolean send = false;
 675		if (account.getStatus() == Account.STATUS_ONLINE) {
 676			if (message.getType() == Message.TYPE_IMAGE) {
 677				mJingleConnectionManager.createNewConnection(message);
 678			} else {
 679				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 680					if (!conv.hasValidOtrSession()) {
 681						// starting otr session. messages will be send later
 682						conv.startOtrSession(getApplicationContext(), presence,true);
 683					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 684						// otr session aleary exists, creating message packet
 685						// accordingly
 686						packet = prepareMessagePacket(account, message,
 687								conv.getOtrSession());
 688						send = true;
 689						message.setStatus(Message.STATUS_SEND);
 690					}
 691					saveInDb = true;
 692					addToConversation = true;
 693				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 694					message.getConversation().endOtrIfNeeded();
 695					long keyId = message.getConversation().getContact()
 696							.getPgpKeyId();
 697					packet = new MessagePacket();
 698					packet.setType(MessagePacket.TYPE_CHAT);
 699					packet.setFrom(message.getConversation().getAccount()
 700							.getFullJid());
 701					packet.setTo(message.getCounterpart());
 702					packet.setBody("This is an XEP-0027 encryted message");
 703					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 704					message.setStatus(Message.STATUS_SEND);
 705					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 706					saveInDb = true;
 707					addToConversation = true;
 708					send = true;
 709				} else {
 710					message.getConversation().endOtrIfNeeded();
 711					// don't encrypt
 712					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 713						message.setStatus(Message.STATUS_SEND);
 714						saveInDb = true;
 715						addToConversation = true;
 716					}
 717					packet = prepareMessagePacket(account, message, null);
 718					send = true;
 719				}
 720			}
 721		} else {
 722			// account is offline
 723			saveInDb = true;
 724			addToConversation = true;
 725
 726		}
 727		if (saveInDb) {
 728			databaseBackend.createMessage(message);
 729		}
 730		if (addToConversation) {
 731			conv.getMessages().add(message);
 732			if (convChangedListener != null) {
 733				convChangedListener.onConversationListChanged();
 734			}
 735		}
 736		if ((send)&&(packet!=null)) {
 737			account.getXmppConnection().sendMessagePacket(packet);
 738		}
 739
 740	}
 741
 742	private void sendUnsendMessages(Conversation conversation) {
 743		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 744			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 745				Message message = conversation.getMessages().get(i);
 746				MessagePacket packet = prepareMessagePacket(
 747						conversation.getAccount(), message, null);
 748				conversation.getAccount().getXmppConnection()
 749						.sendMessagePacket(packet);
 750				message.setStatus(Message.STATUS_SEND);
 751				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 752					databaseBackend.updateMessage(message);
 753				} else {
 754					databaseBackend.deleteMessage(message);
 755					conversation.getMessages().remove(i);
 756					i--;
 757				}
 758			}
 759		}
 760	}
 761
 762	public MessagePacket prepareMessagePacket(Account account, Message message,
 763			Session otrSession) {
 764		MessagePacket packet = new MessagePacket();
 765		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 766			packet.setType(MessagePacket.TYPE_CHAT);
 767			if (otrSession != null) {
 768				try {
 769					packet.setBody(otrSession.transformSending(message
 770							.getBody()));
 771				} catch (OtrException e) {
 772					Log.d(LOGTAG,
 773							account.getJid()
 774									+ ": could not encrypt message to "
 775									+ message.getCounterpart());
 776				}
 777				packet.addChild("private","urn:xmpp:carbons:2");
 778				packet.addChild("no-copy","urn:xmpp:hints");
 779				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 780						+ otrSession.getSessionID().getUserID());
 781				packet.setFrom(account.getFullJid());
 782			} else {
 783				packet.setBody(message.getBody());
 784				packet.setTo(message.getCounterpart());
 785				packet.setFrom(account.getJid());
 786			}
 787		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 788			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 789			packet.setBody(message.getBody());
 790			packet.setTo(message.getCounterpart().split("/")[0]);
 791			packet.setFrom(account.getJid());
 792		}
 793		packet.setId(message.getUuid());
 794		return packet;
 795	}
 796
 797	private void getRoster(Account account,
 798			final OnRosterFetchedListener listener) {
 799		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 800		for (int i = 0; i < contacts.size(); ++i) {
 801			contacts.get(i).setAccount(account);
 802		}
 803		if (listener != null) {
 804			listener.onRosterFetched(contacts);
 805		}
 806	}
 807
 808	public List<Contact> getRoster(Account account) {
 809		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 810		for (int i = 0; i < contacts.size(); ++i) {
 811			contacts.get(i).setAccount(account);
 812		}
 813		return contacts;
 814	}
 815
 816	public void updateRoster(final Account account,
 817			final OnRosterFetchedListener listener) {
 818		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 819		if (!"".equals(account.getRosterVersion())) {
 820			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 821					+ account.getRosterVersion());
 822		} else {
 823			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 824		}
 825		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 826		account.getXmppConnection().sendIqPacket(iqPacket,
 827				new OnIqPacketReceived() {
 828
 829					@Override
 830					public void onIqPacketReceived(final Account account,
 831							IqPacket packet) {
 832						Element roster = packet.findChild("query");
 833						if (roster != null) {
 834							Log.d(LOGTAG, account.getJid()
 835									+ ": processing roster");
 836							processRosterItems(account, roster);
 837							StringBuilder mWhere = new StringBuilder();
 838							mWhere.append("jid NOT IN(");
 839							List<Element> items = roster.getChildren();
 840							for (int i = 0; i < items.size(); ++i) {
 841								mWhere.append(DatabaseUtils
 842										.sqlEscapeString(items.get(i)
 843												.getAttribute("jid")));
 844								if (i != items.size() - 1) {
 845									mWhere.append(",");
 846								}
 847							}
 848							mWhere.append(") and accountUuid = \"");
 849							mWhere.append(account.getUuid());
 850							mWhere.append("\"");
 851							List<Contact> contactsToDelete = databaseBackend
 852									.getContacts(mWhere.toString());
 853							for (Contact contact : contactsToDelete) {
 854								databaseBackend.deleteContact(contact);
 855								replaceContactInConversation(contact.getJid(),
 856										null);
 857							}
 858
 859						} else {
 860							Log.d(LOGTAG, account.getJid()
 861									+ ": empty roster returend");
 862						}
 863						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 864
 865							@Override
 866							public void phoneContactsMerged() {
 867								if (listener != null) {
 868									getRoster(account, listener);
 869								}
 870							}
 871						});
 872					}
 873				});
 874	}
 875
 876	public void mergePhoneContactsWithRoster(
 877			final OnPhoneContactsMerged listener) {
 878		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 879				new OnPhoneContactsLoadedListener() {
 880					@Override
 881					public void onPhoneContactsLoaded(
 882							Hashtable<String, Bundle> phoneContacts) {
 883						List<Contact> contacts = databaseBackend
 884								.getContactsByAccount(null);
 885						for (int i = 0; i < contacts.size(); ++i) {
 886							Contact contact = contacts.get(i);
 887							if (phoneContacts.containsKey(contact.getJid())) {
 888								Bundle phoneContact = phoneContacts.get(contact
 889										.getJid());
 890								String systemAccount = phoneContact
 891										.getInt("phoneid")
 892										+ "#"
 893										+ phoneContact.getString("lookup");
 894								contact.setSystemAccount(systemAccount);
 895								contact.setPhotoUri(phoneContact
 896										.getString("photouri"));
 897								contact.setDisplayName(phoneContact
 898										.getString("displayname"));
 899								databaseBackend.updateContact(contact);
 900								replaceContactInConversation(contact.getJid(),
 901										contact);
 902							} else {
 903								if ((contact.getSystemAccount() != null)
 904										|| (contact.getProfilePhoto() != null)) {
 905									contact.setSystemAccount(null);
 906									contact.setPhotoUri(null);
 907									databaseBackend.updateContact(contact);
 908									replaceContactInConversation(
 909											contact.getJid(), contact);
 910								}
 911							}
 912						}
 913						if (listener != null) {
 914							listener.phoneContactsMerged();
 915						}
 916					}
 917				});
 918	}
 919
 920	public List<Conversation> getConversations() {
 921		if (this.conversations == null) {
 922			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 923			for (Account account : this.accounts) {
 924				accountLookupTable.put(account.getUuid(), account);
 925			}
 926			this.conversations = databaseBackend
 927					.getConversations(Conversation.STATUS_AVAILABLE);
 928			for (Conversation conv : this.conversations) {
 929				Account account = accountLookupTable.get(conv.getAccountUuid());
 930				conv.setAccount(account);
 931				conv.setContact(findContact(account, conv.getContactJid()));
 932				conv.setMessages(databaseBackend.getMessages(conv, 50));
 933			}
 934		}
 935		Collections.sort(this.conversations, new Comparator<Conversation>() {
 936			@Override
 937			public int compare(Conversation lhs, Conversation rhs) {
 938				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 939						.getLatestMessage().getTimeSent());
 940			}
 941		});
 942		return this.conversations;
 943	}
 944
 945	public List<Account> getAccounts() {
 946		return this.accounts;
 947	}
 948
 949	public Contact findContact(Account account, String jid) {
 950		Contact contact = databaseBackend.findContact(account, jid);
 951		if (contact != null) {
 952			contact.setAccount(account);
 953		}
 954		return contact;
 955	}
 956
 957	public Conversation findOrCreateConversation(Account account, String jid,
 958			boolean muc) {
 959		for (Conversation conv : this.getConversations()) {
 960			if ((conv.getAccount().equals(account))
 961					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 962				return conv;
 963			}
 964		}
 965		Conversation conversation = databaseBackend.findConversation(account,
 966				jid);
 967		if (conversation != null) {
 968			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 969			conversation.setAccount(account);
 970			if (muc) {
 971				conversation.setMode(Conversation.MODE_MULTI);
 972			} else {
 973				conversation.setMode(Conversation.MODE_SINGLE);
 974			}
 975			conversation.setMessages(databaseBackend.getMessages(conversation,
 976					50));
 977			this.databaseBackend.updateConversation(conversation);
 978			conversation.setContact(findContact(account,
 979					conversation.getContactJid()));
 980		} else {
 981			String conversationName;
 982			Contact contact = findContact(account, jid);
 983			if (contact != null) {
 984				conversationName = contact.getDisplayName();
 985			} else {
 986				conversationName = jid.split("@")[0];
 987			}
 988			if (muc) {
 989				conversation = new Conversation(conversationName, account, jid,
 990						Conversation.MODE_MULTI);
 991			} else {
 992				conversation = new Conversation(conversationName, account, jid,
 993						Conversation.MODE_SINGLE);
 994			}
 995			conversation.setContact(contact);
 996			this.databaseBackend.createConversation(conversation);
 997		}
 998		this.conversations.add(conversation);
 999		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1000			joinMuc(conversation);
1001		}
1002		if (this.convChangedListener != null) {
1003			this.convChangedListener.onConversationListChanged();
1004		}
1005		return conversation;
1006	}
1007
1008	public void archiveConversation(Conversation conversation) {
1009		if (conversation.getMode() == Conversation.MODE_MULTI) {
1010			leaveMuc(conversation);
1011		} else {
1012			conversation.endOtrIfNeeded();
1013		}
1014		this.databaseBackend.updateConversation(conversation);
1015		this.conversations.remove(conversation);
1016		if (this.convChangedListener != null) {
1017			this.convChangedListener.onConversationListChanged();
1018		}
1019	}
1020
1021	public int getConversationCount() {
1022		return this.databaseBackend.getConversationCount();
1023	}
1024
1025	public void createAccount(Account account) {
1026		databaseBackend.createAccount(account);
1027		this.accounts.add(account);
1028		this.reconnectAccount(account, false);
1029		if (accountChangedListener != null)
1030			accountChangedListener.onAccountListChangedListener();
1031	}
1032
1033	public void deleteContact(Contact contact) {
1034		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1035		Element query = iq.query("jabber:iq:roster");
1036		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1037		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1038		replaceContactInConversation(contact.getJid(), null);
1039		databaseBackend.deleteContact(contact);
1040	}
1041
1042	public void updateAccount(Account account) {
1043		this.statusListener.onStatusChanged(account);
1044		databaseBackend.updateAccount(account);
1045		reconnectAccount(account, false);
1046		if (accountChangedListener != null)
1047			accountChangedListener.onAccountListChangedListener();
1048	}
1049
1050	public void deleteAccount(Account account) {
1051		if (account.getXmppConnection() != null) {
1052			this.disconnect(account, true);
1053		}
1054		databaseBackend.deleteAccount(account);
1055		this.accounts.remove(account);
1056		if (accountChangedListener != null)
1057			accountChangedListener.onAccountListChangedListener();
1058	}
1059
1060	public void setOnConversationListChangedListener(
1061			OnConversationListChangedListener listener) {
1062		this.convChangedListener = listener;
1063		this.convChangedListenerCount++;
1064		Log.d(LOGTAG,"registered on conv changed in backend ("+convChangedListenerCount+")");
1065	}
1066
1067	public void removeOnConversationListChangedListener() {
1068		this.convChangedListenerCount--;
1069		Log.d(LOGTAG,"someone on conv changed listener removed listener ("+convChangedListenerCount+")");
1070		if (this.convChangedListenerCount==0) {
1071			this.convChangedListener = null;
1072		}
1073	}
1074
1075	public void setOnAccountListChangedListener(
1076			OnAccountListChangedListener listener) {
1077		this.accountChangedListener = listener;
1078	}
1079
1080	public void removeOnAccountListChangedListener() {
1081		this.accountChangedListener = null;
1082	}
1083
1084	public void connectMultiModeConversations(Account account) {
1085		List<Conversation> conversations = getConversations();
1086		for (int i = 0; i < conversations.size(); i++) {
1087			Conversation conversation = conversations.get(i);
1088			if ((conversation.getMode() == Conversation.MODE_MULTI)
1089					&& (conversation.getAccount() == account)) {
1090				joinMuc(conversation);
1091			}
1092		}
1093	}
1094
1095	public void joinMuc(Conversation conversation) {
1096		String[] mucParts = conversation.getContactJid().split("/");
1097		String muc;
1098		String nick;
1099		if (mucParts.length == 2) {
1100			muc = mucParts[0];
1101			nick = mucParts[1];
1102		} else {
1103			muc = mucParts[0];
1104			nick = conversation.getAccount().getUsername();
1105		}
1106		PresencePacket packet = new PresencePacket();
1107		packet.setAttribute("to", muc + "/" + nick);
1108		Element x = new Element("x");
1109		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1110		if (conversation.getMessages().size() != 0) {
1111			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1112			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1113			x.addChild("history").setAttribute("seconds", diff + "");
1114		}
1115		packet.addChild(x);
1116		conversation.getAccount().getXmppConnection()
1117				.sendPresencePacket(packet);
1118	}
1119
1120	private OnRenameListener renameListener = null;
1121
1122	public void setOnRenameListener(OnRenameListener listener) {
1123		this.renameListener = listener;
1124	}
1125
1126	public void renameInMuc(final Conversation conversation, final String nick) {
1127		final MucOptions options = conversation.getMucOptions();
1128		if (options.online()) {
1129			options.setOnRenameListener(new OnRenameListener() {
1130
1131				@Override
1132				public void onRename(boolean success) {
1133					if (renameListener != null) {
1134						renameListener.onRename(success);
1135					}
1136					if (success) {
1137						databaseBackend.updateConversation(conversation);
1138					}
1139				}
1140			});
1141			options.flagAboutToRename();
1142			PresencePacket packet = new PresencePacket();
1143			packet.setAttribute("to",
1144					conversation.getContactJid().split("/")[0] + "/" + nick);
1145			packet.setAttribute("from", conversation.getAccount().getFullJid());
1146
1147			conversation.getAccount().getXmppConnection()
1148					.sendPresencePacket(packet, null);
1149		} else {
1150			String jid = conversation.getContactJid().split("/")[0] + "/"
1151					+ nick;
1152			conversation.setContactJid(jid);
1153			databaseBackend.updateConversation(conversation);
1154			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1155				joinMuc(conversation);
1156			}
1157		}
1158	}
1159
1160	public void leaveMuc(Conversation conversation) {
1161		PresencePacket packet = new PresencePacket();
1162		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1163		packet.setAttribute("from", conversation.getAccount().getFullJid());
1164		packet.setAttribute("type", "unavailable");
1165		Log.d(LOGTAG,"send leaving muc " + packet);
1166		conversation.getAccount().getXmppConnection()
1167				.sendPresencePacket(packet);
1168		conversation.getMucOptions().setOffline();
1169	}
1170
1171	public void disconnect(Account account, boolean force) {
1172		if ((account.getStatus() == Account.STATUS_ONLINE)
1173				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1174			if (!force) {
1175				List<Conversation> conversations = getConversations();
1176				for (int i = 0; i < conversations.size(); i++) {
1177					Conversation conversation = conversations.get(i);
1178					if (conversation.getAccount() == account) {
1179						if (conversation.getMode() == Conversation.MODE_MULTI) {
1180							leaveMuc(conversation);
1181						} else {
1182							conversation.endOtrIfNeeded();
1183						}
1184					}
1185				}
1186			}
1187			account.getXmppConnection().disconnect(force);
1188		}
1189	}
1190
1191	@Override
1192	public IBinder onBind(Intent intent) {
1193		return mBinder;
1194	}
1195
1196	public void updateContact(Contact contact) {
1197		databaseBackend.updateContact(contact);
1198		replaceContactInConversation(contact.getJid(), contact);
1199	}
1200
1201	public void updateMessage(Message message) {
1202		databaseBackend.updateMessage(message);
1203	}
1204
1205	public void createContact(Contact contact) {
1206		SharedPreferences sharedPref = PreferenceManager
1207				.getDefaultSharedPreferences(getApplicationContext());
1208		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1209		if (autoGrant) {
1210			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1211			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1212		}
1213		databaseBackend.createContact(contact);
1214		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1215		Element query = new Element("query");
1216		query.setAttribute("xmlns", "jabber:iq:roster");
1217		Element item = new Element("item");
1218		item.setAttribute("jid", contact.getJid());
1219		item.setAttribute("name", contact.getJid());
1220		query.addChild(item);
1221		iq.addChild(query);
1222		Account account = contact.getAccount();
1223		account.getXmppConnection().sendIqPacket(iq, null);
1224		if (autoGrant) {
1225			requestPresenceUpdatesFrom(contact);
1226		}
1227		replaceContactInConversation(contact.getJid(), contact);
1228	}
1229
1230	public void requestPresenceUpdatesFrom(Contact contact) {
1231		// Requesting a Subscription type=subscribe
1232		PresencePacket packet = new PresencePacket();
1233		packet.setAttribute("type", "subscribe");
1234		packet.setAttribute("to", contact.getJid());
1235		packet.setAttribute("from", contact.getAccount().getJid());
1236		Log.d(LOGTAG, packet.toString());
1237		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1238	}
1239
1240	public void stopPresenceUpdatesFrom(Contact contact) {
1241		// Unsubscribing type='unsubscribe'
1242		PresencePacket packet = new PresencePacket();
1243		packet.setAttribute("type", "unsubscribe");
1244		packet.setAttribute("to", contact.getJid());
1245		packet.setAttribute("from", contact.getAccount().getJid());
1246		Log.d(LOGTAG, packet.toString());
1247		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1248	}
1249
1250	public void stopPresenceUpdatesTo(Contact contact) {
1251		// Canceling a Subscription type=unsubscribed
1252		PresencePacket packet = new PresencePacket();
1253		packet.setAttribute("type", "unsubscribed");
1254		packet.setAttribute("to", contact.getJid());
1255		packet.setAttribute("from", contact.getAccount().getJid());
1256		Log.d(LOGTAG, packet.toString());
1257		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1258	}
1259
1260	public void sendPresenceUpdatesTo(Contact contact) {
1261		// type='subscribed'
1262		PresencePacket packet = new PresencePacket();
1263		packet.setAttribute("type", "subscribed");
1264		packet.setAttribute("to", contact.getJid());
1265		packet.setAttribute("from", contact.getAccount().getJid());
1266		Log.d(LOGTAG, packet.toString());
1267		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1268	}
1269
1270	public void sendPgpPresence(Account account, String signature) {
1271		PresencePacket packet = new PresencePacket();
1272		packet.setAttribute("from", account.getFullJid());
1273		Element status = new Element("status");
1274		status.setContent("online");
1275		packet.addChild(status);
1276		Element x = new Element("x");
1277		x.setAttribute("xmlns", "jabber:x:signed");
1278		x.setContent(signature);
1279		packet.addChild(x);
1280		account.getXmppConnection().sendPresencePacket(packet);
1281	}
1282
1283	public void generatePgpAnnouncement(Account account)
1284			throws PgpEngine.UserInputRequiredException {
1285		if (account.getStatus() == Account.STATUS_ONLINE) {
1286			String signature = getPgpEngine().generateSignature("online");
1287			account.setKey("pgp_signature", signature);
1288			databaseBackend.updateAccount(account);
1289			sendPgpPresence(account, signature);
1290		}
1291	}
1292
1293	public void updateConversation(Conversation conversation) {
1294		this.databaseBackend.updateConversation(conversation);
1295	}
1296
1297	public Contact findContact(String uuid) {
1298		Contact contact = this.databaseBackend.getContact(uuid);
1299		if (contact!=null) {
1300			for (Account account : getAccounts()) {
1301				if (contact.getAccountUuid().equals(account.getUuid())) {
1302					contact.setAccount(account);
1303				}
1304			}
1305		}
1306		return contact;
1307	}
1308
1309	public void removeOnTLSExceptionReceivedListener() {
1310		this.tlsException = null;
1311	}
1312
1313	// TODO dont let thread sleep but schedule wake up
1314	public void reconnectAccount(final Account account, final boolean force) {
1315		new Thread(new Runnable() {
1316
1317			@Override
1318			public void run() {
1319				if (account.getXmppConnection() != null) {
1320					disconnect(account, force);
1321				}
1322				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1323					if (account.getXmppConnection() == null) {
1324						account.setXmppConnection(createConnection(account));
1325					}
1326					Thread thread = new Thread(account.getXmppConnection());
1327					thread.start();
1328					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1329				}
1330			}
1331		}).start();
1332	}
1333
1334	public void updateConversationInGui() {
1335		if (convChangedListener != null) {
1336			convChangedListener.onConversationListChanged();
1337		}
1338	}
1339
1340	public void sendConversationSubject(Conversation conversation,
1341			String subject) {
1342		MessagePacket packet = new MessagePacket();
1343		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1344		packet.setTo(conversation.getContactJid().split("/")[0]);
1345		Element subjectChild = new Element("subject");
1346		subjectChild.setContent(subject);
1347		packet.addChild(subjectChild);
1348		packet.setFrom(conversation.getAccount().getJid());
1349		Account account = conversation.getAccount();
1350		if (account.getStatus() == Account.STATUS_ONLINE) {
1351			account.getXmppConnection().sendMessagePacket(packet);
1352		}
1353	}
1354
1355	public void inviteToConference(Conversation conversation,
1356			List<Contact> contacts) {
1357		for (Contact contact : contacts) {
1358			MessagePacket packet = new MessagePacket();
1359			packet.setTo(conversation.getContactJid().split("/")[0]);
1360			packet.setFrom(conversation.getAccount().getFullJid());
1361			Element x = new Element("x");
1362			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1363			Element invite = new Element("invite");
1364			invite.setAttribute("to", contact.getJid());
1365			x.addChild(invite);
1366			packet.addChild(x);
1367			Log.d(LOGTAG, packet.toString());
1368			conversation.getAccount().getXmppConnection()
1369					.sendMessagePacket(packet);
1370		}
1371
1372	}
1373	
1374	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1375		boolean marked = false;
1376		for(Conversation conversation : getConversations()) {
1377			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1378				for(Message message : conversation.getMessages()) {
1379					if (message.getUuid().equals(uuid)) {
1380						markMessage(message, status);
1381						marked = true;
1382						break;
1383					}
1384				}
1385				break;
1386			}
1387		}
1388		return marked;
1389	}
1390	
1391	public void markMessage(Message message, int status) {
1392		message.setStatus(status);
1393		databaseBackend.updateMessage(message);
1394		convChangedListener.onConversationListChanged();
1395	}
1396}