XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.text.ParseException;
   4import java.text.SimpleDateFormat;
   5import java.util.Collections;
   6import java.util.Comparator;
   7import java.util.Date;
   8import java.util.Hashtable;
   9import java.util.List;
  10import java.util.Locale;
  11import java.util.Random;
  12
  13import org.openintents.openpgp.util.OpenPgpApi;
  14import org.openintents.openpgp.util.OpenPgpServiceConnection;
  15
  16import net.java.otr4j.OtrException;
  17import net.java.otr4j.session.Session;
  18import net.java.otr4j.session.SessionStatus;
  19
  20import eu.siacs.conversations.crypto.PgpEngine;
  21import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  22import eu.siacs.conversations.entities.Account;
  23import eu.siacs.conversations.entities.Contact;
  24import eu.siacs.conversations.entities.Conversation;
  25import eu.siacs.conversations.entities.Message;
  26import eu.siacs.conversations.entities.MucOptions;
  27import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  28import eu.siacs.conversations.entities.Presences;
  29import eu.siacs.conversations.persistance.DatabaseBackend;
  30import eu.siacs.conversations.persistance.FileBackend;
  31import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  32import eu.siacs.conversations.ui.OnAccountListChangedListener;
  33import eu.siacs.conversations.ui.OnConversationListChangedListener;
  34import eu.siacs.conversations.ui.OnRosterFetchedListener;
  35import eu.siacs.conversations.utils.ExceptionHelper;
  36import eu.siacs.conversations.utils.MessageParser;
  37import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  38import eu.siacs.conversations.utils.PhoneHelper;
  39import eu.siacs.conversations.utils.UIHelper;
  40import eu.siacs.conversations.xml.Element;
  41import eu.siacs.conversations.xmpp.OnBindListener;
  42import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  43import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  44import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  45import eu.siacs.conversations.xmpp.OnStatusChanged;
  46import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  47import eu.siacs.conversations.xmpp.XmppConnection;
  48import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  49import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  50import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  51import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  52import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  53import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  54import android.app.AlarmManager;
  55import android.app.PendingIntent;
  56import android.app.Service;
  57import android.content.Context;
  58import android.content.Intent;
  59import android.content.SharedPreferences;
  60import android.database.ContentObserver;
  61import android.database.DatabaseUtils;
  62import android.net.ConnectivityManager;
  63import android.net.NetworkInfo;
  64import android.net.Uri;
  65import android.os.Binder;
  66import android.os.Bundle;
  67import android.os.IBinder;
  68import android.os.PowerManager;
  69import android.os.PowerManager.WakeLock;
  70import android.os.SystemClock;
  71import android.preference.PreferenceManager;
  72import android.provider.ContactsContract;
  73import android.util.Log;
  74
  75public class XmppConnectionService extends Service {
  76
  77	protected static final String LOGTAG = "xmppService";
  78	public DatabaseBackend databaseBackend;
  79	private FileBackend fileBackend;
  80
  81	public long startDate;
  82
  83	private static final int PING_MAX_INTERVAL = 300;
  84	private static final int PING_MIN_INTERVAL = 10;
  85	private static final int PING_TIMEOUT = 5;
  86	private static final int CONNECT_TIMEOUT = 60;
  87	private static final long CARBON_GRACE_PERIOD = 60000L;
  88
  89	private List<Account> accounts;
  90	private List<Conversation> conversations = null;
  91	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  92	
  93	public OnConversationListChangedListener convChangedListener = null;
  94	private int convChangedListenerCount = 0;
  95	private OnAccountListChangedListener accountChangedListener = null;
  96	private OnTLSExceptionReceived tlsException = null;
  97
  98	public void setOnTLSExceptionReceivedListener(
  99			OnTLSExceptionReceived listener) {
 100		tlsException = listener;
 101	}
 102
 103	private Random mRandom = new Random(System.currentTimeMillis());
 104
 105	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 106
 107	private ContentObserver contactObserver = new ContentObserver(null) {
 108		@Override
 109		public void onChange(boolean selfChange) {
 110			super.onChange(selfChange);
 111			Log.d(LOGTAG, "contact list has changed");
 112			mergePhoneContactsWithRoster(null);
 113		}
 114	};
 115
 116	private XmppConnectionService service = this;
 117
 118	private final IBinder mBinder = new XmppConnectionBinder();
 119	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 120
 121		@Override
 122		public void onMessagePacketReceived(Account account,
 123				MessagePacket packet) {
 124			Message message = null;
 125			boolean notify = true;
 126			if(getPreferences().getBoolean("notification_grace_period_after_carbon_received", true)){
 127				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 128			}
 129
 130			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 131				String pgpBody = MessageParser.getPgpBody(packet);
 132				if (pgpBody != null) {
 133					message = MessageParser.parsePgpChat(pgpBody, packet,
 134							account, service);
 135					message.markUnread();
 136				} else if ((packet.getBody()!=null) && (packet.getBody().startsWith("?OTR"))) {
 137					message = MessageParser.parseOtrChat(packet, account,
 138							service);
 139					if (message != null) {
 140						message.markUnread();
 141					}
 142				} else if (packet.hasChild("body")) {
 143					message = MessageParser.parsePlainTextChat(packet, account,
 144							service);
 145					message.markUnread();
 146				} else if (packet.hasChild("received")
 147						|| (packet.hasChild("sent"))) {
 148					message = MessageParser.parseCarbonMessage(packet, account,
 149							service);
 150					if (message != null) {
 151						if (message.getStatus() == Message.STATUS_SEND) {
 152							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 153							notify = false;
 154							message.getConversation().markRead();
 155						} else {
 156							message.markUnread();
 157						}
 158					}
 159				}
 160
 161			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 162				message = MessageParser
 163						.parseGroupchat(packet, account, service);
 164				if (message != null) {
 165					if (message.getStatus() == Message.STATUS_RECIEVED) {
 166						message.markUnread();
 167					} else {
 168						message.getConversation().markRead();
 169						notify = false;
 170					}
 171				}
 172			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 173				MessageParser.parseError(packet, account, service);
 174				return;
 175			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 176				if (packet.hasChild("x")) {
 177					Element x = packet.findChild("x");
 178					if (x.hasChild("invite")) {
 179						findOrCreateConversation(account, packet.getFrom(),
 180								true);
 181						if (convChangedListener != null) {
 182							convChangedListener.onConversationListChanged();
 183						}
 184						Log.d(LOGTAG,
 185								"invitation received to " + packet.getFrom());
 186					}
 187
 188				} else {
 189					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 190				}
 191			}
 192			if ((message == null) || (message.getBody() == null)) {
 193				return;
 194			}
 195			if (packet.hasChild("delay")) {
 196				try {
 197					String stamp = packet.findChild("delay").getAttribute(
 198							"stamp");
 199					stamp = stamp.replace("Z", "+0000");
 200					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 201							.parse(stamp);
 202					message.setTime(date.getTime());
 203				} catch (ParseException e) {
 204					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 205				}
 206			}
 207			Conversation conversation = message.getConversation();
 208			conversation.getMessages().add(message);
 209			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 210				databaseBackend.createMessage(message);
 211			}
 212			if (convChangedListener != null) {
 213				convChangedListener.onConversationListChanged();
 214			} else {
 215				UIHelper.updateNotification(getApplicationContext(),
 216						getConversations(), message.getConversation(), notify);
 217			}
 218		}
 219	};
 220	private OnStatusChanged statusListener = new OnStatusChanged() {
 221
 222		@Override
 223		public void onStatusChanged(Account account) {
 224			if (accountChangedListener != null) {
 225				accountChangedListener.onAccountListChangedListener();
 226			}
 227			if (account.getStatus() == Account.STATUS_ONLINE) {
 228				List<Conversation> conversations = getConversations();
 229				for (int i = 0; i < conversations.size(); ++i) {
 230					if (conversations.get(i).getAccount() == account) {
 231						sendUnsendMessages(conversations.get(i));
 232					}
 233				}
 234				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 235			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 236				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 237					int timeToReconnect = mRandom.nextInt(50) + 10;
 238					scheduleWakeupCall(timeToReconnect, false);
 239				}
 240
 241			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 242				databaseBackend.updateAccount(account);
 243				reconnectAccount(account, true);
 244			} else {
 245				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 246			}
 247		}
 248	};
 249
 250	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 251
 252		@Override
 253		public void onPresencePacketReceived(Account account,
 254				PresencePacket packet) {
 255			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 256				Conversation muc = findMuc(
 257						packet.getAttribute("from").split("/")[0], account);
 258				if (muc != null) {
 259					muc.getMucOptions().processPacket(packet);
 260				} else {
 261					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 262				}
 263			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 264				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 265				if (muc != null) {
 266					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 267					int error = muc.getMucOptions().getError();
 268					muc.getMucOptions().processPacket(packet);
 269					if ((muc.getMucOptions().getError() != error)
 270							&& (convChangedListener != null)) {
 271						Log.d(LOGTAG, "muc error status changed");
 272						convChangedListener.onConversationListChanged();
 273					}
 274				}
 275			} else {
 276				String[] fromParts = packet.getAttribute("from").split("/");
 277				String type = packet.getAttribute("type");
 278				if (fromParts[0].equals(account.getJid())) {
 279					if (fromParts.length==2) {
 280						if (type == null) {
 281							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 282						} else if (type.equals("unavailable")) {
 283							account.removePresence(fromParts[1]);
 284						}
 285					}
 286						
 287				} else {
 288					Contact contact = findContact(account, fromParts[0]);
 289					if (contact == null) {
 290						Log.d(LOGTAG,packet.getFrom()+ " could not be found");
 291						return;
 292					}
 293					if (type == null) {
 294						if (fromParts.length == 2) {
 295							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 296							PgpEngine pgp = getPgpEngine();
 297							if (pgp != null) {
 298								Element x = packet.findChild("x","jabber:x:signed");
 299								if (x != null) {
 300									try {
 301										Element status = packet.findChild("status");
 302										String msg;
 303										if (status!=null) {
 304											msg = status.getContent();
 305										} else {
 306											msg = "";
 307										}
 308										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 309														.getContent()));
 310									} catch (OpenPgpException e) {
 311										Log.d(LOGTAG, "faulty pgp. just ignore");
 312									}
 313								}
 314							}
 315							replaceContactInConversation(contact.getJid(), contact);
 316							databaseBackend.updateContact(contact);
 317						} else {
 318							//Log.d(LOGTAG,"presence without resource "+packet.toString());
 319						}
 320					} else if (type.equals("unavailable")) {
 321						if (fromParts.length != 2) {
 322							contact.clearPresences();
 323						} else {
 324							contact.removePresence(fromParts[1]);
 325						}
 326						replaceContactInConversation(contact.getJid(), contact);
 327						databaseBackend.updateContact(contact);
 328					} else if (type.equals("subscribe")) {
 329						Log.d(LOGTAG,"received subscribe packet from "+packet.getFrom());
 330						if (contact
 331								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 332							Log.d(LOGTAG,"preemptive grant; granting");
 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				}
 352			}
 353		}
 354	};
 355
 356	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 357
 358		@Override
 359		public void onIqPacketReceived(Account account, IqPacket packet) {
 360			if (packet.hasChild("query")) {
 361				Element query = packet.findChild("query");
 362				String xmlns = query.getAttribute("xmlns");
 363				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 364					processRosterItems(account, query);
 365					mergePhoneContactsWithRoster(null);
 366				}
 367			} else {
 368				Log.d(LOGTAG,"iq packet arrived "+packet.toString());
 369			}
 370		}
 371	};
 372	
 373	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 374		
 375		@Override
 376		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 377			mJingleConnectionManager.deliverPacket(account, packet);
 378		}
 379	};
 380
 381	private OpenPgpServiceConnection pgpServiceConnection;
 382	private PgpEngine mPgpEngine = null;
 383	private Intent pingIntent;
 384	private PendingIntent pendingPingIntent = null;
 385	private WakeLock wakeLock;
 386	private PowerManager pm;
 387
 388	public PgpEngine getPgpEngine() {
 389		if (pgpServiceConnection.isBound()) {
 390			if (this.mPgpEngine == null) {
 391				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 392						getApplicationContext(),
 393						pgpServiceConnection.getService()));
 394			}
 395			return mPgpEngine;
 396		} else {
 397			return null;
 398		}
 399
 400	}
 401
 402	public FileBackend getFileBackend() {
 403		return this.fileBackend;
 404	}
 405	
 406	public void attachImageToConversation(final Conversation conversation, final String presence, final Uri uri) {
 407		new Thread(new Runnable() {
 408			
 409			@Override
 410			public void run() {
 411				Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 412				message.setPresence(presence);
 413				message.setType(Message.TYPE_IMAGE);
 414				message.setStatus(Message.STATUS_PREPARING);
 415				conversation.getMessages().add(message);
 416				if (convChangedListener!=null) {
 417					convChangedListener.onConversationListChanged();
 418				}
 419				getFileBackend().copyImageToPrivateStorage(message, uri);
 420				message.setStatus(Message.STATUS_UNSEND);
 421				databaseBackend.createMessage(message);
 422				if (convChangedListener!=null) {
 423					convChangedListener.onConversationListChanged();
 424				}
 425				sendMessage(message, null);
 426			}
 427		}).start();
 428	}
 429	
 430	
 431	protected Conversation findMuc(String name, Account account) {
 432		for (Conversation conversation : this.conversations) {
 433			if (conversation.getContactJid().split("/")[0].equals(name)
 434					&& (conversation.getAccount() == account)) {
 435				return conversation;
 436			}
 437		}
 438		return null;
 439	}
 440
 441	private void processRosterItems(Account account, Element elements) {
 442		String version = elements.getAttribute("ver");
 443		if (version != null) {
 444			account.setRosterVersion(version);
 445			databaseBackend.updateAccount(account);
 446		}
 447		for (Element item : elements.getChildren()) {
 448			if (item.getName().equals("item")) {
 449				String jid = item.getAttribute("jid");
 450				String subscription = item.getAttribute("subscription");
 451				Contact contact = databaseBackend.findContact(account, jid);
 452				if (contact == null) {
 453					if (!subscription.equals("remove")) {
 454						String name = item.getAttribute("name");
 455						if (name == null) {
 456							name = jid.split("@")[0];
 457						}
 458						contact = new Contact(account, name, jid, null);
 459						contact.parseSubscriptionFromElement(item);
 460						databaseBackend.createContact(contact);
 461					}
 462				} else {
 463					if (subscription.equals("remove")) {
 464						databaseBackend.deleteContact(contact);
 465						replaceContactInConversation(contact.getJid(), null);
 466					} else {
 467						contact.parseSubscriptionFromElement(item);
 468						databaseBackend.updateContact(contact);
 469						replaceContactInConversation(contact.getJid(), contact);
 470					}
 471				}
 472			}
 473		}
 474	}
 475
 476	private void replaceContactInConversation(String jid, Contact contact) {
 477		List<Conversation> conversations = getConversations();
 478		for (int i = 0; i < conversations.size(); ++i) {
 479			if ((conversations.get(i).getContactJid().equals(jid))) {
 480				conversations.get(i).setContact(contact);
 481				break;
 482			}
 483		}
 484	}
 485
 486	public class XmppConnectionBinder extends Binder {
 487		public XmppConnectionService getService() {
 488			return XmppConnectionService.this;
 489		}
 490	}
 491
 492	@Override
 493	public int onStartCommand(Intent intent, int flags, int startId) {
 494		this.wakeLock.acquire();
 495		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 496		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 497				.getSystemService(Context.CONNECTIVITY_SERVICE);
 498		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 499		boolean isConnected = activeNetwork != null
 500				&& activeNetwork.isConnected();
 501
 502		for (Account account : accounts) {
 503			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 504				if (!isConnected) {
 505					account.setStatus(Account.STATUS_NO_INTERNET);
 506					if (statusListener != null) {
 507						statusListener.onStatusChanged(account);
 508					}
 509				} else {
 510					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 511						account.setStatus(Account.STATUS_OFFLINE);
 512						if (statusListener != null) {
 513							statusListener.onStatusChanged(account);
 514						}
 515					}
 516
 517					// TODO 3 remaining cases
 518					if (account.getStatus() == Account.STATUS_ONLINE) {
 519						long lastReceived = account.getXmppConnection().lastPaketReceived;
 520						long lastSent = account.getXmppConnection().lastPingSent;
 521						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 522							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 523							this.reconnectAccount(account, true);
 524						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 525							account.getXmppConnection().sendPing();
 526							account.getXmppConnection().lastPingSent = SystemClock
 527									.elapsedRealtime();
 528							this.scheduleWakeupCall(2, false);
 529						}
 530					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 531						if (account.getXmppConnection() == null) {
 532							account.setXmppConnection(this
 533									.createConnection(account));
 534						}
 535						account.getXmppConnection().lastPingSent = SystemClock
 536								.elapsedRealtime();
 537						new Thread(account.getXmppConnection()).start();
 538					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 539							&& ((SystemClock.elapsedRealtime() - account
 540									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 541						Log.d(LOGTAG, account.getJid()
 542								+ ": time out during connect reconnecting");
 543						reconnectAccount(account, true);
 544					} else {
 545						Log.d(LOGTAG,
 546								"seconds since last connect:"
 547										+ ((SystemClock.elapsedRealtime() - account
 548												.getXmppConnection().lastConnect) / 1000));
 549						Log.d(LOGTAG,
 550								account.getJid() + ": status="
 551										+ account.getStatus());
 552						// TODO notify user of ssl cert problem or auth problem
 553						// or what ever
 554					}
 555					// in any case. reschedule wakup call
 556					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 557				}
 558				if (accountChangedListener != null) {
 559					accountChangedListener.onAccountListChangedListener();
 560				}
 561			}
 562		}
 563		if (wakeLock.isHeld()) {
 564			wakeLock.release();
 565		}
 566		return START_STICKY;
 567	}
 568
 569	@Override
 570	public void onCreate() {
 571		ExceptionHelper.init(getApplicationContext());
 572		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 573		this.fileBackend = new FileBackend(getApplicationContext());
 574		this.accounts = databaseBackend.getAccounts();
 575
 576		this.getConversations();
 577		
 578		getContentResolver().registerContentObserver(
 579				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 580		this.pgpServiceConnection = new OpenPgpServiceConnection(
 581				getApplicationContext(), "org.sufficientlysecure.keychain");
 582		this.pgpServiceConnection.bindToService();
 583
 584		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 585		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 586				"XmppConnectionService");
 587	}
 588
 589	@Override
 590	public void onDestroy() {
 591		super.onDestroy();
 592		for (Account account : accounts) {
 593			if (account.getXmppConnection() != null) {
 594				disconnect(account, true);
 595			}
 596		}
 597	}
 598
 599	protected void scheduleWakeupCall(int seconds, boolean ping) {
 600		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 601		Context context = getApplicationContext();
 602		AlarmManager alarmManager = (AlarmManager) context
 603				.getSystemService(Context.ALARM_SERVICE);
 604
 605		if (ping) {
 606			if (this.pingIntent == null) {
 607				this.pingIntent = new Intent(context, EventReceiver.class);
 608				this.pingIntent.setAction("ping");
 609				this.pingIntent.putExtra("time", timeToWake);
 610				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 611						this.pingIntent, 0);
 612				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 613						timeToWake, pendingPingIntent);
 614				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 615			} else {
 616				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 617				if (scheduledTime < SystemClock.elapsedRealtime()
 618						|| (scheduledTime > timeToWake)) {
 619					this.pingIntent.putExtra("time", timeToWake);
 620					alarmManager.cancel(this.pendingPingIntent);
 621					this.pendingPingIntent = PendingIntent.getBroadcast(
 622							context, 0, this.pingIntent, 0);
 623					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 624							timeToWake, pendingPingIntent);
 625					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 626				}
 627			}
 628		} else {
 629			Intent intent = new Intent(context, EventReceiver.class);
 630			intent.setAction("ping_check");
 631			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 632					intent, 0);
 633			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 634					alarmIntent);
 635		}
 636
 637	}
 638
 639	public XmppConnection createConnection(Account account) {
 640		SharedPreferences sharedPref = getPreferences();
 641		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 642		XmppConnection connection = new XmppConnection(account, this.pm);
 643		connection.setOnMessagePacketReceivedListener(this.messageListener);
 644		connection.setOnStatusChangedListener(this.statusListener);
 645		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 646		connection
 647				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 648		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 649		connection
 650				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 651
 652					@Override
 653					public void onTLSExceptionReceived(String fingerprint,
 654							Account account) {
 655						Log.d(LOGTAG, "tls exception arrived in service");
 656						if (tlsException != null) {
 657							tlsException.onTLSExceptionReceived(fingerprint,
 658									account);
 659						}
 660					}
 661				});
 662		connection.setOnBindListener(new OnBindListener() {
 663
 664			@Override
 665			public void onBind(Account account) {
 666				databaseBackend.clearPresences(account);
 667				account.clearPresences(); // self presences
 668				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 669					updateRoster(account, null);
 670				}
 671				connectMultiModeConversations(account);
 672				if (convChangedListener != null) {
 673					convChangedListener.onConversationListChanged();
 674				}
 675			}
 676		});
 677		return connection;
 678	}
 679
 680	synchronized public void sendMessage(Message message, String presence) {
 681		Account account = message.getConversation().getAccount();
 682		Conversation conv = message.getConversation();
 683		MessagePacket packet = null;
 684		boolean saveInDb = false;
 685		boolean addToConversation = false;
 686		boolean send = false;
 687		if (account.getStatus() == Account.STATUS_ONLINE) {
 688			if (message.getType() == Message.TYPE_IMAGE) {
 689				mJingleConnectionManager.createNewConnection(message);
 690			} else {
 691				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 692					if (!conv.hasValidOtrSession()) {
 693						// starting otr session. messages will be send later
 694						conv.startOtrSession(getApplicationContext(), presence,true);
 695					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 696						// otr session aleary exists, creating message packet
 697						// accordingly
 698						packet = prepareMessagePacket(account, message,
 699								conv.getOtrSession());
 700						send = true;
 701						message.setStatus(Message.STATUS_SEND);
 702					}
 703					saveInDb = true;
 704					addToConversation = true;
 705				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 706					message.getConversation().endOtrIfNeeded();
 707					long keyId = message.getConversation().getContact()
 708							.getPgpKeyId();
 709					packet = new MessagePacket();
 710					packet.setType(MessagePacket.TYPE_CHAT);
 711					packet.setFrom(message.getConversation().getAccount()
 712							.getFullJid());
 713					packet.setTo(message.getCounterpart());
 714					packet.setBody("This is an XEP-0027 encryted message");
 715					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 716					message.setStatus(Message.STATUS_SEND);
 717					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 718					saveInDb = true;
 719					addToConversation = true;
 720					send = true;
 721				} else {
 722					message.getConversation().endOtrIfNeeded();
 723					// don't encrypt
 724					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 725						message.setStatus(Message.STATUS_SEND);
 726						saveInDb = true;
 727						addToConversation = true;
 728					}
 729					packet = prepareMessagePacket(account, message, null);
 730					send = true;
 731				}
 732			}
 733		} else {
 734			// account is offline
 735			saveInDb = true;
 736			addToConversation = true;
 737
 738		}
 739		if (saveInDb) {
 740			databaseBackend.createMessage(message);
 741		}
 742		if (addToConversation) {
 743			conv.getMessages().add(message);
 744			if (convChangedListener != null) {
 745				convChangedListener.onConversationListChanged();
 746			}
 747		}
 748		if ((send)&&(packet!=null)) {
 749			account.getXmppConnection().sendMessagePacket(packet);
 750		}
 751
 752	}
 753
 754	private void sendUnsendMessages(Conversation conversation) {
 755		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 756			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 757				Message message = conversation.getMessages().get(i);
 758				MessagePacket packet = prepareMessagePacket(
 759						conversation.getAccount(), message, null);
 760				conversation.getAccount().getXmppConnection()
 761						.sendMessagePacket(packet);
 762				message.setStatus(Message.STATUS_SEND);
 763				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 764					databaseBackend.updateMessage(message);
 765				} else {
 766					databaseBackend.deleteMessage(message);
 767					conversation.getMessages().remove(i);
 768					i--;
 769				}
 770			}
 771		}
 772	}
 773
 774	public MessagePacket prepareMessagePacket(Account account, Message message,
 775			Session otrSession) {
 776		MessagePacket packet = new MessagePacket();
 777		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 778			packet.setType(MessagePacket.TYPE_CHAT);
 779			if (otrSession != null) {
 780				try {
 781					packet.setBody(otrSession.transformSending(message
 782							.getBody()));
 783				} catch (OtrException e) {
 784					Log.d(LOGTAG,
 785							account.getJid()
 786									+ ": could not encrypt message to "
 787									+ message.getCounterpart());
 788				}
 789				packet.addChild("private","urn:xmpp:carbons:2");
 790				packet.addChild("no-copy","urn:xmpp:hints");
 791				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 792						+ otrSession.getSessionID().getUserID());
 793				packet.setFrom(account.getFullJid());
 794			} else {
 795				packet.setBody(message.getBody());
 796				packet.setTo(message.getCounterpart());
 797				packet.setFrom(account.getJid());
 798			}
 799		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 800			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 801			packet.setBody(message.getBody());
 802			packet.setTo(message.getCounterpart().split("/")[0]);
 803			packet.setFrom(account.getJid());
 804		}
 805		packet.setId(message.getUuid());
 806		return packet;
 807	}
 808
 809	private void getRoster(Account account,
 810			final OnRosterFetchedListener listener) {
 811		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 812		for (int i = 0; i < contacts.size(); ++i) {
 813			contacts.get(i).setAccount(account);
 814		}
 815		if (listener != null) {
 816			listener.onRosterFetched(contacts);
 817		}
 818	}
 819
 820	public List<Contact> getRoster(Account account) {
 821		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 822		for (int i = 0; i < contacts.size(); ++i) {
 823			contacts.get(i).setAccount(account);
 824		}
 825		return contacts;
 826	}
 827
 828	public void updateRoster(final Account account,
 829			final OnRosterFetchedListener listener) {
 830		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 831		if (!"".equals(account.getRosterVersion())) {
 832			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 833					+ account.getRosterVersion());
 834		} else {
 835			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 836		}
 837		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 838		account.getXmppConnection().sendIqPacket(iqPacket,
 839				new OnIqPacketReceived() {
 840
 841					@Override
 842					public void onIqPacketReceived(final Account account,
 843							IqPacket packet) {
 844						Element roster = packet.findChild("query");
 845						if (roster != null) {
 846							Log.d(LOGTAG, account.getJid()
 847									+ ": processing roster");
 848							processRosterItems(account, roster);
 849							StringBuilder mWhere = new StringBuilder();
 850							mWhere.append("jid NOT IN(");
 851							List<Element> items = roster.getChildren();
 852							for (int i = 0; i < items.size(); ++i) {
 853								mWhere.append(DatabaseUtils
 854										.sqlEscapeString(items.get(i)
 855												.getAttribute("jid")));
 856								if (i != items.size() - 1) {
 857									mWhere.append(",");
 858								}
 859							}
 860							mWhere.append(") and accountUuid = \"");
 861							mWhere.append(account.getUuid());
 862							mWhere.append("\"");
 863							List<Contact> contactsToDelete = databaseBackend
 864									.getContacts(mWhere.toString());
 865							for (Contact contact : contactsToDelete) {
 866								databaseBackend.deleteContact(contact);
 867								replaceContactInConversation(contact.getJid(),
 868										null);
 869							}
 870
 871						} else {
 872							Log.d(LOGTAG, account.getJid()
 873									+ ": empty roster returend");
 874						}
 875						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 876
 877							@Override
 878							public void phoneContactsMerged() {
 879								if (listener != null) {
 880									getRoster(account, listener);
 881								}
 882							}
 883						});
 884					}
 885				});
 886	}
 887
 888	public void mergePhoneContactsWithRoster(
 889			final OnPhoneContactsMerged listener) {
 890		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 891				new OnPhoneContactsLoadedListener() {
 892					@Override
 893					public void onPhoneContactsLoaded(
 894							Hashtable<String, Bundle> phoneContacts) {
 895						List<Contact> contacts = databaseBackend
 896								.getContactsByAccount(null);
 897						for (int i = 0; i < contacts.size(); ++i) {
 898							Contact contact = contacts.get(i);
 899							if (phoneContacts.containsKey(contact.getJid())) {
 900								Bundle phoneContact = phoneContacts.get(contact
 901										.getJid());
 902								String systemAccount = phoneContact
 903										.getInt("phoneid")
 904										+ "#"
 905										+ phoneContact.getString("lookup");
 906								contact.setSystemAccount(systemAccount);
 907								contact.setPhotoUri(phoneContact
 908										.getString("photouri"));
 909								contact.setDisplayName(phoneContact
 910										.getString("displayname"));
 911								databaseBackend.updateContact(contact);
 912								replaceContactInConversation(contact.getJid(),
 913										contact);
 914							} else {
 915								if ((contact.getSystemAccount() != null)
 916										|| (contact.getProfilePhoto() != null)) {
 917									contact.setSystemAccount(null);
 918									contact.setPhotoUri(null);
 919									databaseBackend.updateContact(contact);
 920									replaceContactInConversation(
 921											contact.getJid(), contact);
 922								}
 923							}
 924						}
 925						if (listener != null) {
 926							listener.phoneContactsMerged();
 927						}
 928					}
 929				});
 930	}
 931
 932	public List<Conversation> getConversations() {
 933		if (this.conversations == null) {
 934			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 935			for (Account account : this.accounts) {
 936				accountLookupTable.put(account.getUuid(), account);
 937			}
 938			this.conversations = databaseBackend
 939					.getConversations(Conversation.STATUS_AVAILABLE);
 940			for (Conversation conv : this.conversations) {
 941				Account account = accountLookupTable.get(conv.getAccountUuid());
 942				conv.setAccount(account);
 943				conv.setContact(findContact(account, conv.getContactJid()));
 944				conv.setMessages(databaseBackend.getMessages(conv, 50));
 945			}
 946		}
 947		Collections.sort(this.conversations, new Comparator<Conversation>() {
 948			@Override
 949			public int compare(Conversation lhs, Conversation rhs) {
 950				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 951						.getLatestMessage().getTimeSent());
 952			}
 953		});
 954		return this.conversations;
 955	}
 956
 957	public List<Account> getAccounts() {
 958		return this.accounts;
 959	}
 960
 961	public Contact findContact(Account account, String jid) {
 962		Contact contact = databaseBackend.findContact(account, jid);
 963		if (contact != null) {
 964			contact.setAccount(account);
 965		}
 966		return contact;
 967	}
 968
 969	public Conversation findOrCreateConversation(Account account, String jid,
 970			boolean muc) {
 971		for (Conversation conv : this.getConversations()) {
 972			if ((conv.getAccount().equals(account))
 973					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 974				return conv;
 975			}
 976		}
 977		Conversation conversation = databaseBackend.findConversation(account,
 978				jid);
 979		if (conversation != null) {
 980			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 981			conversation.setAccount(account);
 982			if (muc) {
 983				conversation.setMode(Conversation.MODE_MULTI);
 984			} else {
 985				conversation.setMode(Conversation.MODE_SINGLE);
 986			}
 987			conversation.setMessages(databaseBackend.getMessages(conversation,
 988					50));
 989			this.databaseBackend.updateConversation(conversation);
 990			conversation.setContact(findContact(account,
 991					conversation.getContactJid()));
 992		} else {
 993			String conversationName;
 994			Contact contact = findContact(account, jid);
 995			if (contact != null) {
 996				conversationName = contact.getDisplayName();
 997			} else {
 998				conversationName = jid.split("@")[0];
 999			}
1000			if (muc) {
1001				conversation = new Conversation(conversationName, account, jid,
1002						Conversation.MODE_MULTI);
1003			} else {
1004				conversation = new Conversation(conversationName, account, jid,
1005						Conversation.MODE_SINGLE);
1006			}
1007			conversation.setContact(contact);
1008			this.databaseBackend.createConversation(conversation);
1009		}
1010		this.conversations.add(conversation);
1011		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1012			joinMuc(conversation);
1013		}
1014		if (this.convChangedListener != null) {
1015			this.convChangedListener.onConversationListChanged();
1016		}
1017		return conversation;
1018	}
1019
1020	public void archiveConversation(Conversation conversation) {
1021		if (conversation.getMode() == Conversation.MODE_MULTI) {
1022			leaveMuc(conversation);
1023		} else {
1024			conversation.endOtrIfNeeded();
1025		}
1026		this.databaseBackend.updateConversation(conversation);
1027		this.conversations.remove(conversation);
1028		if (this.convChangedListener != null) {
1029			this.convChangedListener.onConversationListChanged();
1030		}
1031	}
1032
1033	public int getConversationCount() {
1034		return this.databaseBackend.getConversationCount();
1035	}
1036
1037	public void createAccount(Account account) {
1038		databaseBackend.createAccount(account);
1039		this.accounts.add(account);
1040		this.reconnectAccount(account, false);
1041		if (accountChangedListener != null)
1042			accountChangedListener.onAccountListChangedListener();
1043	}
1044
1045	public void deleteContact(Contact contact) {
1046		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1047		Element query = iq.query("jabber:iq:roster");
1048		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1049		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1050		replaceContactInConversation(contact.getJid(), null);
1051		databaseBackend.deleteContact(contact);
1052	}
1053
1054	public void updateAccount(Account account) {
1055		this.statusListener.onStatusChanged(account);
1056		databaseBackend.updateAccount(account);
1057		reconnectAccount(account, false);
1058		if (accountChangedListener != null)
1059			accountChangedListener.onAccountListChangedListener();
1060	}
1061
1062	public void deleteAccount(Account account) {
1063		if (account.getXmppConnection() != null) {
1064			this.disconnect(account, true);
1065		}
1066		databaseBackend.deleteAccount(account);
1067		this.accounts.remove(account);
1068		if (accountChangedListener != null)
1069			accountChangedListener.onAccountListChangedListener();
1070	}
1071
1072	public void setOnConversationListChangedListener(
1073			OnConversationListChangedListener listener) {
1074		this.convChangedListener = listener;
1075		this.convChangedListenerCount++;
1076	}
1077
1078	public void removeOnConversationListChangedListener() {
1079		this.convChangedListenerCount--;
1080		if (this.convChangedListenerCount==0) {
1081			this.convChangedListener = null;
1082		}
1083	}
1084
1085	public void setOnAccountListChangedListener(
1086			OnAccountListChangedListener listener) {
1087		this.accountChangedListener = listener;
1088	}
1089
1090	public void removeOnAccountListChangedListener() {
1091		this.accountChangedListener = null;
1092	}
1093
1094	public void connectMultiModeConversations(Account account) {
1095		List<Conversation> conversations = getConversations();
1096		for (int i = 0; i < conversations.size(); i++) {
1097			Conversation conversation = conversations.get(i);
1098			if ((conversation.getMode() == Conversation.MODE_MULTI)
1099					&& (conversation.getAccount() == account)) {
1100				joinMuc(conversation);
1101			}
1102		}
1103	}
1104
1105	public void joinMuc(Conversation conversation) {
1106		String[] mucParts = conversation.getContactJid().split("/");
1107		String muc;
1108		String nick;
1109		if (mucParts.length == 2) {
1110			muc = mucParts[0];
1111			nick = mucParts[1];
1112		} else {
1113			muc = mucParts[0];
1114			nick = conversation.getAccount().getUsername();
1115		}
1116		PresencePacket packet = new PresencePacket();
1117		packet.setAttribute("to", muc + "/" + nick);
1118		Element x = new Element("x");
1119		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1120		if (conversation.getMessages().size() != 0) {
1121			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1122			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1123			x.addChild("history").setAttribute("seconds", diff + "");
1124		}
1125		packet.addChild(x);
1126		conversation.getAccount().getXmppConnection()
1127				.sendPresencePacket(packet);
1128	}
1129
1130	private OnRenameListener renameListener = null;
1131
1132	public void setOnRenameListener(OnRenameListener listener) {
1133		this.renameListener = listener;
1134	}
1135
1136	public void renameInMuc(final Conversation conversation, final String nick) {
1137		final MucOptions options = conversation.getMucOptions();
1138		if (options.online()) {
1139			options.setOnRenameListener(new OnRenameListener() {
1140
1141				@Override
1142				public void onRename(boolean success) {
1143					if (renameListener != null) {
1144						renameListener.onRename(success);
1145					}
1146					if (success) {
1147						databaseBackend.updateConversation(conversation);
1148					}
1149				}
1150			});
1151			options.flagAboutToRename();
1152			PresencePacket packet = new PresencePacket();
1153			packet.setAttribute("to",
1154					conversation.getContactJid().split("/")[0] + "/" + nick);
1155			packet.setAttribute("from", conversation.getAccount().getFullJid());
1156
1157			conversation.getAccount().getXmppConnection()
1158					.sendPresencePacket(packet, null);
1159		} else {
1160			String jid = conversation.getContactJid().split("/")[0] + "/"
1161					+ nick;
1162			conversation.setContactJid(jid);
1163			databaseBackend.updateConversation(conversation);
1164			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1165				joinMuc(conversation);
1166			}
1167		}
1168	}
1169
1170	public void leaveMuc(Conversation conversation) {
1171		PresencePacket packet = new PresencePacket();
1172		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1173		packet.setAttribute("from", conversation.getAccount().getFullJid());
1174		packet.setAttribute("type", "unavailable");
1175		Log.d(LOGTAG,"send leaving muc " + packet);
1176		conversation.getAccount().getXmppConnection()
1177				.sendPresencePacket(packet);
1178		conversation.getMucOptions().setOffline();
1179	}
1180
1181	public void disconnect(Account account, boolean force) {
1182		if ((account.getStatus() == Account.STATUS_ONLINE)
1183				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1184			if (!force) {
1185				List<Conversation> conversations = getConversations();
1186				for (int i = 0; i < conversations.size(); i++) {
1187					Conversation conversation = conversations.get(i);
1188					if (conversation.getAccount() == account) {
1189						if (conversation.getMode() == Conversation.MODE_MULTI) {
1190							leaveMuc(conversation);
1191						} else {
1192							conversation.endOtrIfNeeded();
1193						}
1194					}
1195				}
1196			}
1197			account.getXmppConnection().disconnect(force);
1198		}
1199	}
1200
1201	@Override
1202	public IBinder onBind(Intent intent) {
1203		return mBinder;
1204	}
1205
1206	public void updateContact(Contact contact) {
1207		databaseBackend.updateContact(contact);
1208		replaceContactInConversation(contact.getJid(), contact);
1209	}
1210
1211	public void updateMessage(Message message) {
1212		databaseBackend.updateMessage(message);
1213	}
1214
1215	public void createContact(Contact contact) {
1216		SharedPreferences sharedPref = getPreferences();
1217		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1218		if (autoGrant) {
1219			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1220			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1221		}
1222		databaseBackend.createContact(contact);
1223		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1224		Element query = new Element("query");
1225		query.setAttribute("xmlns", "jabber:iq:roster");
1226		Element item = new Element("item");
1227		item.setAttribute("jid", contact.getJid());
1228		item.setAttribute("name", contact.getJid());
1229		query.addChild(item);
1230		iq.addChild(query);
1231		Account account = contact.getAccount();
1232		account.getXmppConnection().sendIqPacket(iq, null);
1233		if (autoGrant) {
1234			requestPresenceUpdatesFrom(contact);
1235		}
1236		replaceContactInConversation(contact.getJid(), contact);
1237	}
1238
1239	public void requestPresenceUpdatesFrom(Contact contact) {
1240		// Requesting a Subscription type=subscribe
1241		PresencePacket packet = new PresencePacket();
1242		packet.setAttribute("type", "subscribe");
1243		packet.setAttribute("to", contact.getJid());
1244		packet.setAttribute("from", contact.getAccount().getJid());
1245		Log.d(LOGTAG, packet.toString());
1246		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1247	}
1248
1249	public void stopPresenceUpdatesFrom(Contact contact) {
1250		// Unsubscribing type='unsubscribe'
1251		PresencePacket packet = new PresencePacket();
1252		packet.setAttribute("type", "unsubscribe");
1253		packet.setAttribute("to", contact.getJid());
1254		packet.setAttribute("from", contact.getAccount().getJid());
1255		Log.d(LOGTAG, packet.toString());
1256		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1257	}
1258
1259	public void stopPresenceUpdatesTo(Contact contact) {
1260		// Canceling a Subscription type=unsubscribed
1261		PresencePacket packet = new PresencePacket();
1262		packet.setAttribute("type", "unsubscribed");
1263		packet.setAttribute("to", contact.getJid());
1264		packet.setAttribute("from", contact.getAccount().getJid());
1265		Log.d(LOGTAG, packet.toString());
1266		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1267	}
1268
1269	public void sendPresenceUpdatesTo(Contact contact) {
1270		// type='subscribed'
1271		PresencePacket packet = new PresencePacket();
1272		packet.setAttribute("type", "subscribed");
1273		packet.setAttribute("to", contact.getJid());
1274		packet.setAttribute("from", contact.getAccount().getJid());
1275		Log.d(LOGTAG, packet.toString());
1276		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1277	}
1278
1279	public void sendPgpPresence(Account account, String signature) {
1280		PresencePacket packet = new PresencePacket();
1281		packet.setAttribute("from", account.getFullJid());
1282		Element status = new Element("status");
1283		status.setContent("online");
1284		packet.addChild(status);
1285		Element x = new Element("x");
1286		x.setAttribute("xmlns", "jabber:x:signed");
1287		x.setContent(signature);
1288		packet.addChild(x);
1289		account.getXmppConnection().sendPresencePacket(packet);
1290	}
1291
1292	public void generatePgpAnnouncement(Account account)
1293			throws PgpEngine.UserInputRequiredException {
1294		if (account.getStatus() == Account.STATUS_ONLINE) {
1295			String signature = getPgpEngine().generateSignature("online");
1296			account.setKey("pgp_signature", signature);
1297			databaseBackend.updateAccount(account);
1298			sendPgpPresence(account, signature);
1299		}
1300	}
1301
1302	public void updateConversation(Conversation conversation) {
1303		this.databaseBackend.updateConversation(conversation);
1304	}
1305
1306	public Contact findContact(String uuid) {
1307		Contact contact = this.databaseBackend.getContact(uuid);
1308		if (contact!=null) {
1309			for (Account account : getAccounts()) {
1310				if (contact.getAccountUuid().equals(account.getUuid())) {
1311					contact.setAccount(account);
1312				}
1313			}
1314		}
1315		return contact;
1316	}
1317
1318	public void removeOnTLSExceptionReceivedListener() {
1319		this.tlsException = null;
1320	}
1321
1322	// TODO dont let thread sleep but schedule wake up
1323	public void reconnectAccount(final Account account, final boolean force) {
1324		new Thread(new Runnable() {
1325
1326			@Override
1327			public void run() {
1328				if (account.getXmppConnection() != null) {
1329					disconnect(account, force);
1330				}
1331				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1332					if (account.getXmppConnection() == null) {
1333						account.setXmppConnection(createConnection(account));
1334					}
1335					Thread thread = new Thread(account.getXmppConnection());
1336					thread.start();
1337					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1338				}
1339			}
1340		}).start();
1341	}
1342
1343	public void updateConversationInGui() {
1344		if (convChangedListener != null) {
1345			convChangedListener.onConversationListChanged();
1346		}
1347	}
1348
1349	public void sendConversationSubject(Conversation conversation,
1350			String subject) {
1351		MessagePacket packet = new MessagePacket();
1352		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1353		packet.setTo(conversation.getContactJid().split("/")[0]);
1354		Element subjectChild = new Element("subject");
1355		subjectChild.setContent(subject);
1356		packet.addChild(subjectChild);
1357		packet.setFrom(conversation.getAccount().getJid());
1358		Account account = conversation.getAccount();
1359		if (account.getStatus() == Account.STATUS_ONLINE) {
1360			account.getXmppConnection().sendMessagePacket(packet);
1361		}
1362	}
1363
1364	public void inviteToConference(Conversation conversation,
1365			List<Contact> contacts) {
1366		for (Contact contact : contacts) {
1367			MessagePacket packet = new MessagePacket();
1368			packet.setTo(conversation.getContactJid().split("/")[0]);
1369			packet.setFrom(conversation.getAccount().getFullJid());
1370			Element x = new Element("x");
1371			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1372			Element invite = new Element("invite");
1373			invite.setAttribute("to", contact.getJid());
1374			x.addChild(invite);
1375			packet.addChild(x);
1376			Log.d(LOGTAG, packet.toString());
1377			conversation.getAccount().getXmppConnection()
1378					.sendMessagePacket(packet);
1379		}
1380
1381	}
1382	
1383	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1384		boolean marked = false;
1385		for(Conversation conversation : getConversations()) {
1386			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1387				for(Message message : conversation.getMessages()) {
1388					if (message.getUuid().equals(uuid)) {
1389						markMessage(message, status);
1390						marked = true;
1391						break;
1392					}
1393				}
1394				break;
1395			}
1396		}
1397		return marked;
1398	}
1399	
1400	public void markMessage(Message message, int status) {
1401		message.setStatus(status);
1402		databaseBackend.updateMessage(message);
1403		if (convChangedListener!=null) {
1404			convChangedListener.onConversationListChanged();
1405		}
1406	}
1407	
1408	public SharedPreferences getPreferences() {
1409		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1410	}
1411}