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.OnJinglePacketReceived;
  45import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  46import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  47import eu.siacs.conversations.xmpp.OnStatusChanged;
  48import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  49import eu.siacs.conversations.xmpp.XmppConnection;
  50import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  51import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  52import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  53import eu.siacs.conversations.xmpp.stanzas.jingle.JinglePacket;
  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(PreferenceManager
 127					.getDefaultSharedPreferences(getApplicationContext())
 128					.getBoolean("notification_grace_period_after_carbon_received", true)){
 129				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 130			}
 131
 132			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 133				String pgpBody = MessageParser.getPgpBody(packet);
 134				if (pgpBody != null) {
 135					message = MessageParser.parsePgpChat(pgpBody, packet,
 136							account, service);
 137					message.markUnread();
 138				} else if (packet.hasChild("body")
 139						&& (packet.getBody().startsWith("?OTR"))) {
 140					message = MessageParser.parseOtrChat(packet, account,
 141							service);
 142					if (message != null) {
 143						message.markUnread();
 144					}
 145				} else if (packet.hasChild("body")) {
 146					message = MessageParser.parsePlainTextChat(packet, account,
 147							service);
 148					message.markUnread();
 149				} else if (packet.hasChild("received")
 150						|| (packet.hasChild("sent"))) {
 151					message = MessageParser.parseCarbonMessage(packet, account,
 152							service);
 153					if (message != null) {
 154						if (message.getStatus() == Message.STATUS_SEND) {
 155							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 156							notify = false;
 157							message.getConversation().markRead();
 158						} else {
 159							message.markUnread();
 160						}
 161					}
 162				}
 163
 164			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 165				message = MessageParser
 166						.parseGroupchat(packet, account, service);
 167				if (message != null) {
 168					if (message.getStatus() == Message.STATUS_RECIEVED) {
 169						message.markUnread();
 170					} else {
 171						message.getConversation().markRead();
 172						notify = false;
 173					}
 174				}
 175			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 176				message = MessageParser.parseError(packet, account, service);
 177			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 178				if (packet.hasChild("x")) {
 179					Element x = packet.findChild("x");
 180					if (x.hasChild("invite")) {
 181						findOrCreateConversation(account, packet.getFrom(),
 182								true);
 183						if (convChangedListener != null) {
 184							convChangedListener.onConversationListChanged();
 185						}
 186						Log.d(LOGTAG,
 187								"invitation received to " + packet.getFrom());
 188					}
 189
 190				} else {
 191					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 192				}
 193			}
 194			if ((message == null) || (message.getBody() == null)) {
 195				return;
 196			}
 197			if (packet.hasChild("delay")) {
 198				try {
 199					String stamp = packet.findChild("delay").getAttribute(
 200							"stamp");
 201					stamp = stamp.replace("Z", "+0000");
 202					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 203							.parse(stamp);
 204					message.setTime(date.getTime());
 205				} catch (ParseException e) {
 206					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 207				}
 208			}
 209			Conversation conversation = message.getConversation();
 210			conversation.getMessages().add(message);
 211			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 212				databaseBackend.createMessage(message);
 213			}
 214			if (convChangedListener != null) {
 215				convChangedListener.onConversationListChanged();
 216			} else {
 217				UIHelper.updateNotification(getApplicationContext(),
 218						getConversations(), message.getConversation(), notify);
 219			}
 220		}
 221	};
 222	private OnStatusChanged statusListener = new OnStatusChanged() {
 223
 224		@Override
 225		public void onStatusChanged(Account account) {
 226			if (accountChangedListener != null) {
 227				accountChangedListener.onAccountListChangedListener();
 228			}
 229			if (account.getStatus() == Account.STATUS_ONLINE) {
 230				List<Conversation> conversations = getConversations();
 231				for (int i = 0; i < conversations.size(); ++i) {
 232					if (conversations.get(i).getAccount() == account) {
 233						sendUnsendMessages(conversations.get(i));
 234					}
 235				}
 236				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 237			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 238				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 239					int timeToReconnect = mRandom.nextInt(50) + 10;
 240					scheduleWakeupCall(timeToReconnect, false);
 241				}
 242
 243			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 244				databaseBackend.updateAccount(account);
 245				reconnectAccount(account, true);
 246			} else {
 247				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 248			}
 249		}
 250	};
 251
 252	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 253
 254		@Override
 255		public void onPresencePacketReceived(Account account,
 256				PresencePacket packet) {
 257			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 258				Conversation muc = findMuc(
 259						packet.getAttribute("from").split("/")[0], account);
 260				if (muc != null) {
 261					muc.getMucOptions().processPacket(packet);
 262				} else {
 263					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 264				}
 265			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 266				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 267				if (muc != null) {
 268					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 269					int error = muc.getMucOptions().getError();
 270					muc.getMucOptions().processPacket(packet);
 271					if ((muc.getMucOptions().getError() != error)
 272							&& (convChangedListener != null)) {
 273						Log.d(LOGTAG, "muc error status changed");
 274						convChangedListener.onConversationListChanged();
 275					}
 276				}
 277			} else {
 278				String[] fromParts = packet.getAttribute("from").split("/");
 279				String type = packet.getAttribute("type");
 280				if (fromParts[0].equals(account.getJid())) {
 281					if (fromParts.length==2) {
 282						if (type == null) {
 283							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 284						} else if (type.equals("unavailable")) {
 285							account.removePresence(fromParts[1]);
 286						}
 287					}
 288						
 289				} else {
 290					Contact contact = findContact(account, fromParts[0]);
 291					if (contact == null) {
 292						// most likely roster not synced
 293						return;
 294					}
 295					if (type == null) {
 296						if (fromParts.length == 2) {
 297							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 298							PgpEngine pgp = getPgpEngine();
 299							if (pgp != null) {
 300								Element x = packet.findChild("x","jabber:x:signed");
 301								if (x != null) {
 302									try {
 303										Element status = packet.findChild("status");
 304										String msg;
 305										if (status!=null) {
 306											msg = status.getContent();
 307										} else {
 308											msg = "";
 309										}
 310										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 311														.getContent()));
 312									} catch (OpenPgpException e) {
 313										Log.d(LOGTAG, "faulty pgp. just ignore");
 314									}
 315								}
 316							}
 317							databaseBackend.updateContact(contact);
 318						} else {
 319							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 320						}
 321					} else if (type.equals("unavailable")) {
 322						if (fromParts.length != 2) {
 323							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 324						} else {
 325							contact.removePresence(fromParts[1]);
 326							databaseBackend.updateContact(contact);
 327						}
 328					} else if (type.equals("subscribe")) {
 329						if (contact
 330								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 331							sendPresenceUpdatesTo(contact);
 332							contact.setSubscriptionOption(Contact.Subscription.FROM);
 333							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 334							replaceContactInConversation(contact.getJid(),
 335									contact);
 336							databaseBackend.updateContact(contact);
 337							if ((contact
 338									.getSubscriptionOption(Contact.Subscription.ASKING))
 339									&& (!contact
 340											.getSubscriptionOption(Contact.Subscription.TO))) {
 341								requestPresenceUpdatesFrom(contact);
 342							}
 343						} else {
 344							// TODO: ask user to handle it maybe
 345						}
 346					} else {
 347						//Log.d(LOGTAG, packet.toString());
 348					}
 349					replaceContactInConversation(contact.getJid(), contact);
 350				}
 351			}
 352		}
 353	};
 354
 355	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 356
 357		@Override
 358		public void onIqPacketReceived(Account account, IqPacket packet) {
 359			if (packet.hasChild("query")) {
 360				Element query = packet.findChild("query");
 361				String xmlns = query.getAttribute("xmlns");
 362				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 363					processRosterItems(account, query);
 364					mergePhoneContactsWithRoster(null);
 365				}
 366			}
 367		}
 368	};
 369	
 370	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 371		
 372		@Override
 373		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 374			Log.d(LOGTAG,account.getJid()+": jingle packet received"+packet.toString());
 375		}
 376	};
 377
 378	private OpenPgpServiceConnection pgpServiceConnection;
 379	private PgpEngine mPgpEngine = null;
 380	private Intent pingIntent;
 381	private PendingIntent pendingPingIntent = null;
 382	private WakeLock wakeLock;
 383	private PowerManager pm;
 384
 385	public PgpEngine getPgpEngine() {
 386		if (pgpServiceConnection.isBound()) {
 387			if (this.mPgpEngine == null) {
 388				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 389						getApplicationContext(),
 390						pgpServiceConnection.getService()));
 391			}
 392			return mPgpEngine;
 393		} else {
 394			return null;
 395		}
 396
 397	}
 398
 399	public FileBackend getFileBackend() {
 400		return this.fileBackend;
 401	}
 402	
 403	public Message attachImageToConversation(Conversation conversation, Uri uri) {
 404		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 405		message.setType(Message.TYPE_IMAGE);
 406		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 407		Log.d(LOGTAG,"new file"+file.getAbsolutePath());
 408		conversation.getMessages().add(message);
 409		databaseBackend.createMessage(message);
 410		sendMessage(message, null);
 411		return message;
 412	}
 413	
 414	
 415	protected Conversation findMuc(String name, Account account) {
 416		for (Conversation conversation : this.conversations) {
 417			if (conversation.getContactJid().split("/")[0].equals(name)
 418					&& (conversation.getAccount() == account)) {
 419				return conversation;
 420			}
 421		}
 422		return null;
 423	}
 424
 425	private void processRosterItems(Account account, Element elements) {
 426		String version = elements.getAttribute("ver");
 427		if (version != null) {
 428			account.setRosterVersion(version);
 429			databaseBackend.updateAccount(account);
 430		}
 431		for (Element item : elements.getChildren()) {
 432			if (item.getName().equals("item")) {
 433				String jid = item.getAttribute("jid");
 434				String subscription = item.getAttribute("subscription");
 435				Contact contact = databaseBackend.findContact(account, jid);
 436				if (contact == null) {
 437					if (!subscription.equals("remove")) {
 438						String name = item.getAttribute("name");
 439						if (name == null) {
 440							name = jid.split("@")[0];
 441						}
 442						contact = new Contact(account, name, jid, null);
 443						contact.parseSubscriptionFromElement(item);
 444						databaseBackend.createContact(contact);
 445					}
 446				} else {
 447					if (subscription.equals("remove")) {
 448						databaseBackend.deleteContact(contact);
 449						replaceContactInConversation(contact.getJid(), null);
 450					} else {
 451						contact.parseSubscriptionFromElement(item);
 452						databaseBackend.updateContact(contact);
 453						replaceContactInConversation(contact.getJid(), contact);
 454					}
 455				}
 456			}
 457		}
 458	}
 459
 460	private void replaceContactInConversation(String jid, Contact contact) {
 461		List<Conversation> conversations = getConversations();
 462		for (int i = 0; i < conversations.size(); ++i) {
 463			if ((conversations.get(i).getContactJid().equals(jid))) {
 464				conversations.get(i).setContact(contact);
 465				break;
 466			}
 467		}
 468	}
 469
 470	public class XmppConnectionBinder extends Binder {
 471		public XmppConnectionService getService() {
 472			return XmppConnectionService.this;
 473		}
 474	}
 475
 476	@Override
 477	public int onStartCommand(Intent intent, int flags, int startId) {
 478		this.wakeLock.acquire();
 479		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 480		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 481				.getSystemService(Context.CONNECTIVITY_SERVICE);
 482		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 483		boolean isConnected = activeNetwork != null
 484				&& activeNetwork.isConnected();
 485
 486		for (Account account : accounts) {
 487			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 488				if (!isConnected) {
 489					account.setStatus(Account.STATUS_NO_INTERNET);
 490					if (statusListener != null) {
 491						statusListener.onStatusChanged(account);
 492					}
 493				} else {
 494					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 495						account.setStatus(Account.STATUS_OFFLINE);
 496						if (statusListener != null) {
 497							statusListener.onStatusChanged(account);
 498						}
 499					}
 500
 501					// TODO 3 remaining cases
 502					if (account.getStatus() == Account.STATUS_ONLINE) {
 503						long lastReceived = account.getXmppConnection().lastPaketReceived;
 504						long lastSent = account.getXmppConnection().lastPingSent;
 505						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 506							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 507							this.reconnectAccount(account, true);
 508						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 509							account.getXmppConnection().sendPing();
 510							account.getXmppConnection().lastPingSent = SystemClock
 511									.elapsedRealtime();
 512							this.scheduleWakeupCall(2, false);
 513						}
 514					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 515						if (account.getXmppConnection() == null) {
 516							account.setXmppConnection(this
 517									.createConnection(account));
 518						}
 519						account.getXmppConnection().lastPingSent = SystemClock
 520								.elapsedRealtime();
 521						new Thread(account.getXmppConnection()).start();
 522					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 523							&& ((SystemClock.elapsedRealtime() - account
 524									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 525						Log.d(LOGTAG, account.getJid()
 526								+ ": time out during connect reconnecting");
 527						reconnectAccount(account, true);
 528					} else {
 529						Log.d(LOGTAG,
 530								"seconds since last connect:"
 531										+ ((SystemClock.elapsedRealtime() - account
 532												.getXmppConnection().lastConnect) / 1000));
 533						Log.d(LOGTAG,
 534								account.getJid() + ": status="
 535										+ account.getStatus());
 536						// TODO notify user of ssl cert problem or auth problem
 537						// or what ever
 538					}
 539					// in any case. reschedule wakup call
 540					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 541				}
 542				if (accountChangedListener != null) {
 543					accountChangedListener.onAccountListChangedListener();
 544				}
 545			}
 546		}
 547		if (wakeLock.isHeld()) {
 548			wakeLock.release();
 549		}
 550		return START_STICKY;
 551	}
 552
 553	@Override
 554	public void onCreate() {
 555		ExceptionHelper.init(getApplicationContext());
 556		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 557		this.fileBackend = new FileBackend(getApplicationContext());
 558		this.accounts = databaseBackend.getAccounts();
 559
 560		this.getConversations();
 561		
 562		getContentResolver().registerContentObserver(
 563				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 564		this.pgpServiceConnection = new OpenPgpServiceConnection(
 565				getApplicationContext(), "org.sufficientlysecure.keychain");
 566		this.pgpServiceConnection.bindToService();
 567
 568		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 569		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 570				"XmppConnectionService");
 571	}
 572
 573	@Override
 574	public void onDestroy() {
 575		super.onDestroy();
 576		for (Account account : accounts) {
 577			if (account.getXmppConnection() != null) {
 578				disconnect(account, true);
 579			}
 580		}
 581	}
 582
 583	protected void scheduleWakeupCall(int seconds, boolean ping) {
 584		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 585		Context context = getApplicationContext();
 586		AlarmManager alarmManager = (AlarmManager) context
 587				.getSystemService(Context.ALARM_SERVICE);
 588
 589		if (ping) {
 590			if (this.pingIntent == null) {
 591				this.pingIntent = new Intent(context, EventReceiver.class);
 592				this.pingIntent.setAction("ping");
 593				this.pingIntent.putExtra("time", timeToWake);
 594				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 595						this.pingIntent, 0);
 596				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 597						timeToWake, pendingPingIntent);
 598				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 599			} else {
 600				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 601				if (scheduledTime < SystemClock.elapsedRealtime()
 602						|| (scheduledTime > timeToWake)) {
 603					this.pingIntent.putExtra("time", timeToWake);
 604					alarmManager.cancel(this.pendingPingIntent);
 605					this.pendingPingIntent = PendingIntent.getBroadcast(
 606							context, 0, this.pingIntent, 0);
 607					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 608							timeToWake, pendingPingIntent);
 609					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 610				}
 611			}
 612		} else {
 613			Intent intent = new Intent(context, EventReceiver.class);
 614			intent.setAction("ping_check");
 615			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 616					intent, 0);
 617			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 618					alarmIntent);
 619		}
 620
 621	}
 622
 623	public XmppConnection createConnection(Account account) {
 624		SharedPreferences sharedPref = PreferenceManager
 625				.getDefaultSharedPreferences(getApplicationContext());
 626		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 627		XmppConnection connection = new XmppConnection(account, this.pm);
 628		connection.setOnMessagePacketReceivedListener(this.messageListener);
 629		connection.setOnStatusChangedListener(this.statusListener);
 630		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 631		connection
 632				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 633		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 634		connection
 635				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 636
 637					@Override
 638					public void onTLSExceptionReceived(String fingerprint,
 639							Account account) {
 640						Log.d(LOGTAG, "tls exception arrived in service");
 641						if (tlsException != null) {
 642							tlsException.onTLSExceptionReceived(fingerprint,
 643									account);
 644						}
 645					}
 646				});
 647		connection.setOnBindListener(new OnBindListener() {
 648
 649			@Override
 650			public void onBind(Account account) {
 651				databaseBackend.clearPresences(account);
 652				account.clearPresences(); // self presences
 653				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 654					updateRoster(account, null);
 655				}
 656				connectMultiModeConversations(account);
 657				if (convChangedListener != null) {
 658					convChangedListener.onConversationListChanged();
 659				}
 660			}
 661		});
 662		return connection;
 663	}
 664
 665	synchronized public void sendMessage(Message message, String presence) {
 666		Account account = message.getConversation().getAccount();
 667		Conversation conv = message.getConversation();
 668		boolean saveInDb = false;
 669		boolean addToConversation = false;
 670		if (account.getStatus() == Account.STATUS_ONLINE) {
 671			if (message.getType() == Message.TYPE_IMAGE) {
 672				mJingleConnectionManager.createNewConnection(message);
 673			} else {
 674				MessagePacket packet;
 675				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 676					if (!conv.hasValidOtrSession()) {
 677						// starting otr session. messages will be send later
 678						conv.startOtrSession(getApplicationContext(), presence,true);
 679					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 680						// otr session aleary exists, creating message packet
 681						// accordingly
 682						packet = prepareMessagePacket(account, message,
 683								conv.getOtrSession());
 684						account.getXmppConnection().sendMessagePacket(packet);
 685						message.setStatus(Message.STATUS_SEND);
 686					}
 687					saveInDb = true;
 688					addToConversation = true;
 689				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 690					message.getConversation().endOtrIfNeeded();
 691					long keyId = message.getConversation().getContact()
 692							.getPgpKeyId();
 693					packet = new MessagePacket();
 694					packet.setType(MessagePacket.TYPE_CHAT);
 695					packet.setFrom(message.getConversation().getAccount()
 696							.getFullJid());
 697					packet.setTo(message.getCounterpart());
 698					packet.setBody("This is an XEP-0027 encryted message");
 699					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 700					account.getXmppConnection().sendMessagePacket(packet);
 701					message.setStatus(Message.STATUS_SEND);
 702					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 703					saveInDb = true;
 704					addToConversation = true;
 705				} else {
 706					message.getConversation().endOtrIfNeeded();
 707					// don't encrypt
 708					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 709						message.setStatus(Message.STATUS_SEND);
 710						saveInDb = true;
 711						addToConversation = true;
 712					}
 713	
 714					packet = prepareMessagePacket(account, message, null);
 715					account.getXmppConnection().sendMessagePacket(packet);
 716				}
 717			}
 718		} else {
 719			// account is offline
 720			saveInDb = true;
 721			addToConversation = true;
 722
 723		}
 724		if (saveInDb) {
 725			databaseBackend.createMessage(message);
 726		}
 727		if (addToConversation) {
 728			conv.getMessages().add(message);
 729			if (convChangedListener != null) {
 730				convChangedListener.onConversationListChanged();
 731			}
 732		}
 733
 734	}
 735
 736	private void sendUnsendMessages(Conversation conversation) {
 737		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 738			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 739				Message message = conversation.getMessages().get(i);
 740				MessagePacket packet = prepareMessagePacket(
 741						conversation.getAccount(), message, null);
 742				conversation.getAccount().getXmppConnection()
 743						.sendMessagePacket(packet);
 744				message.setStatus(Message.STATUS_SEND);
 745				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 746					databaseBackend.updateMessage(message);
 747				} else {
 748					databaseBackend.deleteMessage(message);
 749					conversation.getMessages().remove(i);
 750					i--;
 751				}
 752			}
 753		}
 754	}
 755
 756	public MessagePacket prepareMessagePacket(Account account, Message message,
 757			Session otrSession) {
 758		MessagePacket packet = new MessagePacket();
 759		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 760			packet.setType(MessagePacket.TYPE_CHAT);
 761			if (otrSession != null) {
 762				try {
 763					packet.setBody(otrSession.transformSending(message
 764							.getBody()));
 765				} catch (OtrException e) {
 766					Log.d(LOGTAG,
 767							account.getJid()
 768									+ ": could not encrypt message to "
 769									+ message.getCounterpart());
 770				}
 771				packet.addChild("private","urn:xmpp:carbons:2");
 772				packet.addChild("no-copy","urn:xmpp:hints");
 773				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 774						+ otrSession.getSessionID().getUserID());
 775				packet.setFrom(account.getFullJid());
 776			} else {
 777				packet.setBody(message.getBody());
 778				packet.setTo(message.getCounterpart());
 779				packet.setFrom(account.getJid());
 780			}
 781		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 782			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 783			packet.setBody(message.getBody());
 784			packet.setTo(message.getCounterpart().split("/")[0]);
 785			packet.setFrom(account.getJid());
 786		}
 787		return packet;
 788	}
 789
 790	private void getRoster(Account account,
 791			final OnRosterFetchedListener listener) {
 792		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 793		for (int i = 0; i < contacts.size(); ++i) {
 794			contacts.get(i).setAccount(account);
 795		}
 796		if (listener != null) {
 797			listener.onRosterFetched(contacts);
 798		}
 799	}
 800
 801	public List<Contact> getRoster(Account account) {
 802		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 803		for (int i = 0; i < contacts.size(); ++i) {
 804			contacts.get(i).setAccount(account);
 805		}
 806		return contacts;
 807	}
 808
 809	public void updateRoster(final Account account,
 810			final OnRosterFetchedListener listener) {
 811		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 812		if (!"".equals(account.getRosterVersion())) {
 813			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 814					+ account.getRosterVersion());
 815		} else {
 816			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 817		}
 818		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 819		account.getXmppConnection().sendIqPacket(iqPacket,
 820				new OnIqPacketReceived() {
 821
 822					@Override
 823					public void onIqPacketReceived(final Account account,
 824							IqPacket packet) {
 825						Element roster = packet.findChild("query");
 826						if (roster != null) {
 827							Log.d(LOGTAG, account.getJid()
 828									+ ": processing roster");
 829							processRosterItems(account, roster);
 830							StringBuilder mWhere = new StringBuilder();
 831							mWhere.append("jid NOT IN(");
 832							List<Element> items = roster.getChildren();
 833							for (int i = 0; i < items.size(); ++i) {
 834								mWhere.append(DatabaseUtils
 835										.sqlEscapeString(items.get(i)
 836												.getAttribute("jid")));
 837								if (i != items.size() - 1) {
 838									mWhere.append(",");
 839								}
 840							}
 841							mWhere.append(") and accountUuid = \"");
 842							mWhere.append(account.getUuid());
 843							mWhere.append("\"");
 844							List<Contact> contactsToDelete = databaseBackend
 845									.getContacts(mWhere.toString());
 846							for (Contact contact : contactsToDelete) {
 847								databaseBackend.deleteContact(contact);
 848								replaceContactInConversation(contact.getJid(),
 849										null);
 850							}
 851
 852						} else {
 853							Log.d(LOGTAG, account.getJid()
 854									+ ": empty roster returend");
 855						}
 856						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 857
 858							@Override
 859							public void phoneContactsMerged() {
 860								if (listener != null) {
 861									getRoster(account, listener);
 862								}
 863							}
 864						});
 865					}
 866				});
 867	}
 868
 869	public void mergePhoneContactsWithRoster(
 870			final OnPhoneContactsMerged listener) {
 871		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 872				new OnPhoneContactsLoadedListener() {
 873					@Override
 874					public void onPhoneContactsLoaded(
 875							Hashtable<String, Bundle> phoneContacts) {
 876						List<Contact> contacts = databaseBackend
 877								.getContactsByAccount(null);
 878						for (int i = 0; i < contacts.size(); ++i) {
 879							Contact contact = contacts.get(i);
 880							if (phoneContacts.containsKey(contact.getJid())) {
 881								Bundle phoneContact = phoneContacts.get(contact
 882										.getJid());
 883								String systemAccount = phoneContact
 884										.getInt("phoneid")
 885										+ "#"
 886										+ phoneContact.getString("lookup");
 887								contact.setSystemAccount(systemAccount);
 888								contact.setPhotoUri(phoneContact
 889										.getString("photouri"));
 890								contact.setDisplayName(phoneContact
 891										.getString("displayname"));
 892								databaseBackend.updateContact(contact);
 893								replaceContactInConversation(contact.getJid(),
 894										contact);
 895							} else {
 896								if ((contact.getSystemAccount() != null)
 897										|| (contact.getProfilePhoto() != null)) {
 898									contact.setSystemAccount(null);
 899									contact.setPhotoUri(null);
 900									databaseBackend.updateContact(contact);
 901									replaceContactInConversation(
 902											contact.getJid(), contact);
 903								}
 904							}
 905						}
 906						if (listener != null) {
 907							listener.phoneContactsMerged();
 908						}
 909					}
 910				});
 911	}
 912
 913	public List<Conversation> getConversations() {
 914		if (this.conversations == null) {
 915			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 916			for (Account account : this.accounts) {
 917				accountLookupTable.put(account.getUuid(), account);
 918			}
 919			this.conversations = databaseBackend
 920					.getConversations(Conversation.STATUS_AVAILABLE);
 921			for (Conversation conv : this.conversations) {
 922				Account account = accountLookupTable.get(conv.getAccountUuid());
 923				conv.setAccount(account);
 924				conv.setContact(findContact(account, conv.getContactJid()));
 925				conv.setMessages(databaseBackend.getMessages(conv, 50));
 926			}
 927		}
 928		Collections.sort(this.conversations, new Comparator<Conversation>() {
 929			@Override
 930			public int compare(Conversation lhs, Conversation rhs) {
 931				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 932						.getLatestMessage().getTimeSent());
 933			}
 934		});
 935		return this.conversations;
 936	}
 937
 938	public List<Account> getAccounts() {
 939		return this.accounts;
 940	}
 941
 942	public Contact findContact(Account account, String jid) {
 943		Contact contact = databaseBackend.findContact(account, jid);
 944		if (contact != null) {
 945			contact.setAccount(account);
 946		}
 947		return contact;
 948	}
 949
 950	public Conversation findOrCreateConversation(Account account, String jid,
 951			boolean muc) {
 952		for (Conversation conv : this.getConversations()) {
 953			if ((conv.getAccount().equals(account))
 954					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 955				return conv;
 956			}
 957		}
 958		Conversation conversation = databaseBackend.findConversation(account,
 959				jid);
 960		if (conversation != null) {
 961			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 962			conversation.setAccount(account);
 963			if (muc) {
 964				conversation.setMode(Conversation.MODE_MULTI);
 965			} else {
 966				conversation.setMode(Conversation.MODE_SINGLE);
 967			}
 968			conversation.setMessages(databaseBackend.getMessages(conversation,
 969					50));
 970			this.databaseBackend.updateConversation(conversation);
 971			conversation.setContact(findContact(account,
 972					conversation.getContactJid()));
 973		} else {
 974			String conversationName;
 975			Contact contact = findContact(account, jid);
 976			if (contact != null) {
 977				conversationName = contact.getDisplayName();
 978			} else {
 979				conversationName = jid.split("@")[0];
 980			}
 981			if (muc) {
 982				conversation = new Conversation(conversationName, account, jid,
 983						Conversation.MODE_MULTI);
 984			} else {
 985				conversation = new Conversation(conversationName, account, jid,
 986						Conversation.MODE_SINGLE);
 987			}
 988			conversation.setContact(contact);
 989			this.databaseBackend.createConversation(conversation);
 990		}
 991		this.conversations.add(conversation);
 992		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
 993			joinMuc(conversation);
 994		}
 995		if (this.convChangedListener != null) {
 996			this.convChangedListener.onConversationListChanged();
 997		}
 998		return conversation;
 999	}
1000
1001	public void archiveConversation(Conversation conversation) {
1002		if (conversation.getMode() == Conversation.MODE_MULTI) {
1003			leaveMuc(conversation);
1004		} else {
1005			conversation.endOtrIfNeeded();
1006		}
1007		this.databaseBackend.updateConversation(conversation);
1008		this.conversations.remove(conversation);
1009		if (this.convChangedListener != null) {
1010			this.convChangedListener.onConversationListChanged();
1011		}
1012	}
1013
1014	public int getConversationCount() {
1015		return this.databaseBackend.getConversationCount();
1016	}
1017
1018	public void createAccount(Account account) {
1019		databaseBackend.createAccount(account);
1020		this.accounts.add(account);
1021		this.reconnectAccount(account, false);
1022		if (accountChangedListener != null)
1023			accountChangedListener.onAccountListChangedListener();
1024	}
1025
1026	public void deleteContact(Contact contact) {
1027		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1028		Element query = iq.query("jabber:iq:roster");
1029		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1030		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1031		replaceContactInConversation(contact.getJid(), null);
1032		databaseBackend.deleteContact(contact);
1033	}
1034
1035	public void updateAccount(Account account) {
1036		this.statusListener.onStatusChanged(account);
1037		databaseBackend.updateAccount(account);
1038		reconnectAccount(account, false);
1039		if (accountChangedListener != null)
1040			accountChangedListener.onAccountListChangedListener();
1041	}
1042
1043	public void deleteAccount(Account account) {
1044		if (account.getXmppConnection() != null) {
1045			this.disconnect(account, true);
1046		}
1047		databaseBackend.deleteAccount(account);
1048		this.accounts.remove(account);
1049		if (accountChangedListener != null)
1050			accountChangedListener.onAccountListChangedListener();
1051	}
1052
1053	public void setOnConversationListChangedListener(
1054			OnConversationListChangedListener listener) {
1055		this.convChangedListener = listener;
1056		this.convChangedListenerCount++;
1057		Log.d(LOGTAG,"registered on conv changed in backend ("+convChangedListenerCount+")");
1058	}
1059
1060	public void removeOnConversationListChangedListener() {
1061		this.convChangedListenerCount--;
1062		Log.d(LOGTAG,"someone on conv changed listener removed listener ("+convChangedListenerCount+")");
1063		if (this.convChangedListenerCount==0) {
1064			this.convChangedListener = null;
1065		}
1066	}
1067
1068	public void setOnAccountListChangedListener(
1069			OnAccountListChangedListener listener) {
1070		this.accountChangedListener = listener;
1071	}
1072
1073	public void removeOnAccountListChangedListener() {
1074		this.accountChangedListener = null;
1075	}
1076
1077	public void connectMultiModeConversations(Account account) {
1078		List<Conversation> conversations = getConversations();
1079		for (int i = 0; i < conversations.size(); i++) {
1080			Conversation conversation = conversations.get(i);
1081			if ((conversation.getMode() == Conversation.MODE_MULTI)
1082					&& (conversation.getAccount() == account)) {
1083				joinMuc(conversation);
1084			}
1085		}
1086	}
1087
1088	public void joinMuc(Conversation conversation) {
1089		String[] mucParts = conversation.getContactJid().split("/");
1090		String muc;
1091		String nick;
1092		if (mucParts.length == 2) {
1093			muc = mucParts[0];
1094			nick = mucParts[1];
1095		} else {
1096			muc = mucParts[0];
1097			nick = conversation.getAccount().getUsername();
1098		}
1099		PresencePacket packet = new PresencePacket();
1100		packet.setAttribute("to", muc + "/" + nick);
1101		Element x = new Element("x");
1102		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1103		if (conversation.getMessages().size() != 0) {
1104			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1105			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1106			x.addChild("history").setAttribute("seconds", diff + "");
1107		}
1108		packet.addChild(x);
1109		conversation.getAccount().getXmppConnection()
1110				.sendPresencePacket(packet);
1111	}
1112
1113	private OnRenameListener renameListener = null;
1114
1115	public void setOnRenameListener(OnRenameListener listener) {
1116		this.renameListener = listener;
1117	}
1118
1119	public void renameInMuc(final Conversation conversation, final String nick) {
1120		final MucOptions options = conversation.getMucOptions();
1121		if (options.online()) {
1122			options.setOnRenameListener(new OnRenameListener() {
1123
1124				@Override
1125				public void onRename(boolean success) {
1126					if (renameListener != null) {
1127						renameListener.onRename(success);
1128					}
1129					if (success) {
1130						databaseBackend.updateConversation(conversation);
1131					}
1132				}
1133			});
1134			options.flagAboutToRename();
1135			PresencePacket packet = new PresencePacket();
1136			packet.setAttribute("to",
1137					conversation.getContactJid().split("/")[0] + "/" + nick);
1138			packet.setAttribute("from", conversation.getAccount().getFullJid());
1139
1140			conversation.getAccount().getXmppConnection()
1141					.sendPresencePacket(packet, null);
1142		} else {
1143			String jid = conversation.getContactJid().split("/")[0] + "/"
1144					+ nick;
1145			conversation.setContactJid(jid);
1146			databaseBackend.updateConversation(conversation);
1147			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1148				joinMuc(conversation);
1149			}
1150		}
1151	}
1152
1153	public void leaveMuc(Conversation conversation) {
1154		PresencePacket packet = new PresencePacket();
1155		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1156		packet.setAttribute("from", conversation.getAccount().getFullJid());
1157		packet.setAttribute("type", "unavailable");
1158		Log.d(LOGTAG,"send leaving muc " + packet);
1159		conversation.getAccount().getXmppConnection()
1160				.sendPresencePacket(packet);
1161		conversation.getMucOptions().setOffline();
1162	}
1163
1164	public void disconnect(Account account, boolean force) {
1165		if ((account.getStatus() == Account.STATUS_ONLINE)
1166				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1167			if (!force) {
1168				List<Conversation> conversations = getConversations();
1169				for (int i = 0; i < conversations.size(); i++) {
1170					Conversation conversation = conversations.get(i);
1171					if (conversation.getAccount() == account) {
1172						if (conversation.getMode() == Conversation.MODE_MULTI) {
1173							leaveMuc(conversation);
1174						} else {
1175							conversation.endOtrIfNeeded();
1176						}
1177					}
1178				}
1179			}
1180			account.getXmppConnection().disconnect(force);
1181		}
1182	}
1183
1184	@Override
1185	public IBinder onBind(Intent intent) {
1186		return mBinder;
1187	}
1188
1189	public void updateContact(Contact contact) {
1190		databaseBackend.updateContact(contact);
1191		replaceContactInConversation(contact.getJid(), contact);
1192	}
1193
1194	public void updateMessage(Message message) {
1195		databaseBackend.updateMessage(message);
1196	}
1197
1198	public void createContact(Contact contact) {
1199		SharedPreferences sharedPref = PreferenceManager
1200				.getDefaultSharedPreferences(getApplicationContext());
1201		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1202		if (autoGrant) {
1203			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1204			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1205		}
1206		databaseBackend.createContact(contact);
1207		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1208		Element query = new Element("query");
1209		query.setAttribute("xmlns", "jabber:iq:roster");
1210		Element item = new Element("item");
1211		item.setAttribute("jid", contact.getJid());
1212		item.setAttribute("name", contact.getJid());
1213		query.addChild(item);
1214		iq.addChild(query);
1215		Account account = contact.getAccount();
1216		account.getXmppConnection().sendIqPacket(iq, null);
1217		if (autoGrant) {
1218			requestPresenceUpdatesFrom(contact);
1219		}
1220		replaceContactInConversation(contact.getJid(), contact);
1221	}
1222
1223	public void requestPresenceUpdatesFrom(Contact contact) {
1224		// Requesting a Subscription type=subscribe
1225		PresencePacket packet = new PresencePacket();
1226		packet.setAttribute("type", "subscribe");
1227		packet.setAttribute("to", contact.getJid());
1228		packet.setAttribute("from", contact.getAccount().getJid());
1229		Log.d(LOGTAG, packet.toString());
1230		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1231	}
1232
1233	public void stopPresenceUpdatesFrom(Contact contact) {
1234		// Unsubscribing type='unsubscribe'
1235		PresencePacket packet = new PresencePacket();
1236		packet.setAttribute("type", "unsubscribe");
1237		packet.setAttribute("to", contact.getJid());
1238		packet.setAttribute("from", contact.getAccount().getJid());
1239		Log.d(LOGTAG, packet.toString());
1240		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1241	}
1242
1243	public void stopPresenceUpdatesTo(Contact contact) {
1244		// Canceling a Subscription type=unsubscribed
1245		PresencePacket packet = new PresencePacket();
1246		packet.setAttribute("type", "unsubscribed");
1247		packet.setAttribute("to", contact.getJid());
1248		packet.setAttribute("from", contact.getAccount().getJid());
1249		Log.d(LOGTAG, packet.toString());
1250		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1251	}
1252
1253	public void sendPresenceUpdatesTo(Contact contact) {
1254		// type='subscribed'
1255		PresencePacket packet = new PresencePacket();
1256		packet.setAttribute("type", "subscribed");
1257		packet.setAttribute("to", contact.getJid());
1258		packet.setAttribute("from", contact.getAccount().getJid());
1259		Log.d(LOGTAG, packet.toString());
1260		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1261	}
1262
1263	public void sendPgpPresence(Account account, String signature) {
1264		PresencePacket packet = new PresencePacket();
1265		packet.setAttribute("from", account.getFullJid());
1266		Element status = new Element("status");
1267		status.setContent("online");
1268		packet.addChild(status);
1269		Element x = new Element("x");
1270		x.setAttribute("xmlns", "jabber:x:signed");
1271		x.setContent(signature);
1272		packet.addChild(x);
1273		account.getXmppConnection().sendPresencePacket(packet);
1274	}
1275
1276	public void generatePgpAnnouncement(Account account)
1277			throws PgpEngine.UserInputRequiredException {
1278		if (account.getStatus() == Account.STATUS_ONLINE) {
1279			String signature = getPgpEngine().generateSignature("online");
1280			account.setKey("pgp_signature", signature);
1281			databaseBackend.updateAccount(account);
1282			sendPgpPresence(account, signature);
1283		}
1284	}
1285
1286	public void updateConversation(Conversation conversation) {
1287		this.databaseBackend.updateConversation(conversation);
1288	}
1289
1290	public Contact findContact(String uuid) {
1291		Contact contact = this.databaseBackend.getContact(uuid);
1292		if (contact!=null) {
1293			for (Account account : getAccounts()) {
1294				if (contact.getAccountUuid().equals(account.getUuid())) {
1295					contact.setAccount(account);
1296				}
1297			}
1298		}
1299		return contact;
1300	}
1301
1302	public void removeOnTLSExceptionReceivedListener() {
1303		this.tlsException = null;
1304	}
1305
1306	// TODO dont let thread sleep but schedule wake up
1307	public void reconnectAccount(final Account account, final boolean force) {
1308		new Thread(new Runnable() {
1309
1310			@Override
1311			public void run() {
1312				if (account.getXmppConnection() != null) {
1313					disconnect(account, force);
1314				}
1315				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1316					if (account.getXmppConnection() == null) {
1317						account.setXmppConnection(createConnection(account));
1318					}
1319					Thread thread = new Thread(account.getXmppConnection());
1320					thread.start();
1321					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1322				}
1323			}
1324		}).start();
1325	}
1326
1327	public void updateConversationInGui() {
1328		if (convChangedListener != null) {
1329			convChangedListener.onConversationListChanged();
1330		}
1331	}
1332
1333	public void sendConversationSubject(Conversation conversation,
1334			String subject) {
1335		MessagePacket packet = new MessagePacket();
1336		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1337		packet.setTo(conversation.getContactJid().split("/")[0]);
1338		Element subjectChild = new Element("subject");
1339		subjectChild.setContent(subject);
1340		packet.addChild(subjectChild);
1341		packet.setFrom(conversation.getAccount().getJid());
1342		Account account = conversation.getAccount();
1343		if (account.getStatus() == Account.STATUS_ONLINE) {
1344			account.getXmppConnection().sendMessagePacket(packet);
1345		}
1346	}
1347
1348	public void inviteToConference(Conversation conversation,
1349			List<Contact> contacts) {
1350		for (Contact contact : contacts) {
1351			MessagePacket packet = new MessagePacket();
1352			packet.setTo(conversation.getContactJid().split("/")[0]);
1353			packet.setFrom(conversation.getAccount().getFullJid());
1354			Element x = new Element("x");
1355			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1356			Element invite = new Element("invite");
1357			invite.setAttribute("to", contact.getJid());
1358			x.addChild(invite);
1359			packet.addChild(x);
1360			Log.d(LOGTAG, packet.toString());
1361			conversation.getAccount().getXmppConnection()
1362					.sendMessagePacket(packet);
1363		}
1364
1365	}
1366}