XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.io.File;
   4import java.text.ParseException;
   5import java.text.SimpleDateFormat;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.Random;
  13
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  23import eu.siacs.conversations.entities.Account;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.utils.ExceptionHelper;
  37import eu.siacs.conversations.utils.MessageParser;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  46import eu.siacs.conversations.xmpp.OnStatusChanged;
  47import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  48import eu.siacs.conversations.xmpp.XmppConnection;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  51import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  52import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  53import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  54import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  55import android.app.AlarmManager;
  56import android.app.PendingIntent;
  57import android.app.Service;
  58import android.content.Context;
  59import android.content.Intent;
  60import android.content.SharedPreferences;
  61import android.database.ContentObserver;
  62import android.database.DatabaseUtils;
  63import android.net.ConnectivityManager;
  64import android.net.NetworkInfo;
  65import android.net.Uri;
  66import android.os.Binder;
  67import android.os.Bundle;
  68import android.os.IBinder;
  69import android.os.PowerManager;
  70import android.os.PowerManager.WakeLock;
  71import android.os.SystemClock;
  72import android.preference.PreferenceManager;
  73import android.provider.ContactsContract;
  74import android.util.Log;
  75
  76public class XmppConnectionService extends Service {
  77
  78	protected static final String LOGTAG = "xmppService";
  79	public DatabaseBackend databaseBackend;
  80	private FileBackend fileBackend;
  81
  82	public long startDate;
  83
  84	private static final int PING_MAX_INTERVAL = 300;
  85	private static final int PING_MIN_INTERVAL = 10;
  86	private static final int PING_TIMEOUT = 5;
  87	private static final int CONNECT_TIMEOUT = 60;
  88	private static final long CARBON_GRACE_PERIOD = 60000L;
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  93	
  94	public OnConversationListChangedListener convChangedListener = null;
  95	private int convChangedListenerCount = 0;
  96	private OnAccountListChangedListener accountChangedListener = null;
  97	private OnTLSExceptionReceived tlsException = null;
  98
  99	public void setOnTLSExceptionReceivedListener(
 100			OnTLSExceptionReceived listener) {
 101		tlsException = listener;
 102	}
 103
 104	private Random mRandom = new Random(System.currentTimeMillis());
 105
 106	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 107
 108	private ContentObserver contactObserver = new ContentObserver(null) {
 109		@Override
 110		public void onChange(boolean selfChange) {
 111			super.onChange(selfChange);
 112			Log.d(LOGTAG, "contact list has changed");
 113			mergePhoneContactsWithRoster(null);
 114		}
 115	};
 116
 117	private XmppConnectionService service = this;
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if(getPreferences().getBoolean("notification_grace_period_after_carbon_received", true)){
 128				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 129			}
 130
 131			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 132				String pgpBody = MessageParser.getPgpBody(packet);
 133				if (pgpBody != null) {
 134					message = MessageParser.parsePgpChat(pgpBody, packet,
 135							account, service);
 136					message.markUnread();
 137				} else if ((packet.getBody()!=null) && (packet.getBody().startsWith("?OTR"))) {
 138					message = MessageParser.parseOtrChat(packet, account,
 139							service);
 140					if (message != null) {
 141						message.markUnread();
 142					}
 143				} else if (packet.hasChild("body")) {
 144					message = MessageParser.parsePlainTextChat(packet, account,
 145							service);
 146					message.markUnread();
 147				} else if (packet.hasChild("received")
 148						|| (packet.hasChild("sent"))) {
 149					message = MessageParser.parseCarbonMessage(packet, account,
 150							service);
 151					if (message != null) {
 152						if (message.getStatus() == Message.STATUS_SEND) {
 153							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 154							notify = false;
 155							message.getConversation().markRead();
 156						} else {
 157							message.markUnread();
 158						}
 159					}
 160				}
 161
 162			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 163				message = MessageParser
 164						.parseGroupchat(packet, account, service);
 165				if (message != null) {
 166					if (message.getStatus() == Message.STATUS_RECIEVED) {
 167						message.markUnread();
 168					} else {
 169						message.getConversation().markRead();
 170						notify = false;
 171					}
 172				}
 173			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 174				MessageParser.parseError(packet, account, service);
 175				return;
 176			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 177				if (packet.hasChild("x")) {
 178					Element x = packet.findChild("x");
 179					if (x.hasChild("invite")) {
 180						findOrCreateConversation(account, packet.getFrom(),
 181								true);
 182						if (convChangedListener != null) {
 183							convChangedListener.onConversationListChanged();
 184						}
 185						Log.d(LOGTAG,
 186								"invitation received to " + packet.getFrom());
 187					}
 188
 189				} else {
 190					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 191				}
 192			}
 193			if ((message == null) || (message.getBody() == null)) {
 194				return;
 195			}
 196			if (packet.hasChild("delay")) {
 197				try {
 198					String stamp = packet.findChild("delay").getAttribute(
 199							"stamp");
 200					stamp = stamp.replace("Z", "+0000");
 201					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 202							.parse(stamp);
 203					message.setTime(date.getTime());
 204				} catch (ParseException e) {
 205					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 206				}
 207			}
 208			Conversation conversation = message.getConversation();
 209			conversation.getMessages().add(message);
 210			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 211				databaseBackend.createMessage(message);
 212			}
 213			if (convChangedListener != null) {
 214				convChangedListener.onConversationListChanged();
 215			} else {
 216				UIHelper.updateNotification(getApplicationContext(),
 217						getConversations(), message.getConversation(), notify);
 218			}
 219		}
 220	};
 221	private OnStatusChanged statusListener = new OnStatusChanged() {
 222
 223		@Override
 224		public void onStatusChanged(Account account) {
 225			if (accountChangedListener != null) {
 226				accountChangedListener.onAccountListChangedListener();
 227			}
 228			if (account.getStatus() == Account.STATUS_ONLINE) {
 229				List<Conversation> conversations = getConversations();
 230				for (int i = 0; i < conversations.size(); ++i) {
 231					if (conversations.get(i).getAccount() == account) {
 232						sendUnsendMessages(conversations.get(i));
 233					}
 234				}
 235				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 236			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 237				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 238					int timeToReconnect = mRandom.nextInt(50) + 10;
 239					scheduleWakeupCall(timeToReconnect, false);
 240				}
 241
 242			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 243				databaseBackend.updateAccount(account);
 244				reconnectAccount(account, true);
 245			} else {
 246				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 247			}
 248		}
 249	};
 250
 251	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 252
 253		@Override
 254		public void onPresencePacketReceived(Account account,
 255				PresencePacket packet) {
 256			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 257				Conversation muc = findMuc(
 258						packet.getAttribute("from").split("/")[0], account);
 259				if (muc != null) {
 260					muc.getMucOptions().processPacket(packet);
 261				} else {
 262					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 263				}
 264			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 265				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 266				if (muc != null) {
 267					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 268					int error = muc.getMucOptions().getError();
 269					muc.getMucOptions().processPacket(packet);
 270					if ((muc.getMucOptions().getError() != error)
 271							&& (convChangedListener != null)) {
 272						Log.d(LOGTAG, "muc error status changed");
 273						convChangedListener.onConversationListChanged();
 274					}
 275				}
 276			} else {
 277				String[] fromParts = packet.getAttribute("from").split("/");
 278				String type = packet.getAttribute("type");
 279				if (fromParts[0].equals(account.getJid())) {
 280					if (fromParts.length==2) {
 281						if (type == null) {
 282							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 283						} else if (type.equals("unavailable")) {
 284							account.removePresence(fromParts[1]);
 285						}
 286					}
 287						
 288				} else {
 289					Contact contact = findContact(account, fromParts[0]);
 290					if (contact == null) {
 291						//Log.d(LOGTAG,"contact was 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						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					replaceContactInConversation(contact.getJid(), contact);
 352				}
 353			}
 354		}
 355	};
 356
 357	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 358
 359		@Override
 360		public void onIqPacketReceived(Account account, IqPacket packet) {
 361			if (packet.hasChild("query")) {
 362				Element query = packet.findChild("query");
 363				String xmlns = query.getAttribute("xmlns");
 364				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 365					processRosterItems(account, query);
 366					mergePhoneContactsWithRoster(null);
 367				}
 368			} else {
 369				Log.d(LOGTAG,"iq packet arrived "+packet.toString());
 370			}
 371		}
 372	};
 373	
 374	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 375		
 376		@Override
 377		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 378			mJingleConnectionManager.deliverPacket(account, packet);
 379		}
 380	};
 381
 382	private OpenPgpServiceConnection pgpServiceConnection;
 383	private PgpEngine mPgpEngine = null;
 384	private Intent pingIntent;
 385	private PendingIntent pendingPingIntent = null;
 386	private WakeLock wakeLock;
 387	private PowerManager pm;
 388
 389	public PgpEngine getPgpEngine() {
 390		if (pgpServiceConnection.isBound()) {
 391			if (this.mPgpEngine == null) {
 392				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 393						getApplicationContext(),
 394						pgpServiceConnection.getService()));
 395			}
 396			return mPgpEngine;
 397		} else {
 398			return null;
 399		}
 400
 401	}
 402
 403	public FileBackend getFileBackend() {
 404		return this.fileBackend;
 405	}
 406	
 407	public void attachImageToConversation(final Conversation conversation, final String presence, final Uri uri) {
 408		new Thread(new Runnable() {
 409			
 410			@Override
 411			public void run() {
 412				Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 413				message.setPresence(presence);
 414				message.setType(Message.TYPE_IMAGE);
 415				message.setStatus(Message.STATUS_PREPARING);
 416				conversation.getMessages().add(message);
 417				if (convChangedListener!=null) {
 418					convChangedListener.onConversationListChanged();
 419				}
 420				getFileBackend().copyImageToPrivateStorage(message, uri);
 421				message.setStatus(Message.STATUS_UNSEND);
 422				databaseBackend.createMessage(message);
 423				if (convChangedListener!=null) {
 424					convChangedListener.onConversationListChanged();
 425				}
 426				sendMessage(message, null);
 427			}
 428		}).start();
 429	}
 430	
 431	
 432	protected Conversation findMuc(String name, Account account) {
 433		for (Conversation conversation : this.conversations) {
 434			if (conversation.getContactJid().split("/")[0].equals(name)
 435					&& (conversation.getAccount() == account)) {
 436				return conversation;
 437			}
 438		}
 439		return null;
 440	}
 441
 442	private void processRosterItems(Account account, Element elements) {
 443		String version = elements.getAttribute("ver");
 444		if (version != null) {
 445			account.setRosterVersion(version);
 446			databaseBackend.updateAccount(account);
 447		}
 448		for (Element item : elements.getChildren()) {
 449			if (item.getName().equals("item")) {
 450				String jid = item.getAttribute("jid");
 451				String subscription = item.getAttribute("subscription");
 452				Contact contact = databaseBackend.findContact(account, jid);
 453				if (contact == null) {
 454					if (!subscription.equals("remove")) {
 455						String name = item.getAttribute("name");
 456						if (name == null) {
 457							name = jid.split("@")[0];
 458						}
 459						contact = new Contact(account, name, jid, null);
 460						contact.parseSubscriptionFromElement(item);
 461						databaseBackend.createContact(contact);
 462					}
 463				} else {
 464					if (subscription.equals("remove")) {
 465						databaseBackend.deleteContact(contact);
 466						replaceContactInConversation(contact.getJid(), null);
 467					} else {
 468						contact.parseSubscriptionFromElement(item);
 469						databaseBackend.updateContact(contact);
 470						replaceContactInConversation(contact.getJid(), contact);
 471					}
 472				}
 473			}
 474		}
 475	}
 476
 477	private void replaceContactInConversation(String jid, Contact contact) {
 478		List<Conversation> conversations = getConversations();
 479		for (int i = 0; i < conversations.size(); ++i) {
 480			if ((conversations.get(i).getContactJid().equals(jid))) {
 481				conversations.get(i).setContact(contact);
 482				break;
 483			}
 484		}
 485	}
 486
 487	public class XmppConnectionBinder extends Binder {
 488		public XmppConnectionService getService() {
 489			return XmppConnectionService.this;
 490		}
 491	}
 492
 493	@Override
 494	public int onStartCommand(Intent intent, int flags, int startId) {
 495		this.wakeLock.acquire();
 496		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 497		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 498				.getSystemService(Context.CONNECTIVITY_SERVICE);
 499		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 500		boolean isConnected = activeNetwork != null
 501				&& activeNetwork.isConnected();
 502
 503		for (Account account : accounts) {
 504			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 505				if (!isConnected) {
 506					account.setStatus(Account.STATUS_NO_INTERNET);
 507					if (statusListener != null) {
 508						statusListener.onStatusChanged(account);
 509					}
 510				} else {
 511					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 512						account.setStatus(Account.STATUS_OFFLINE);
 513						if (statusListener != null) {
 514							statusListener.onStatusChanged(account);
 515						}
 516					}
 517
 518					// TODO 3 remaining cases
 519					if (account.getStatus() == Account.STATUS_ONLINE) {
 520						long lastReceived = account.getXmppConnection().lastPaketReceived;
 521						long lastSent = account.getXmppConnection().lastPingSent;
 522						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 523							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 524							this.reconnectAccount(account, true);
 525						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 526							account.getXmppConnection().sendPing();
 527							account.getXmppConnection().lastPingSent = SystemClock
 528									.elapsedRealtime();
 529							this.scheduleWakeupCall(2, false);
 530						}
 531					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 532						if (account.getXmppConnection() == null) {
 533							account.setXmppConnection(this
 534									.createConnection(account));
 535						}
 536						account.getXmppConnection().lastPingSent = SystemClock
 537								.elapsedRealtime();
 538						new Thread(account.getXmppConnection()).start();
 539					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 540							&& ((SystemClock.elapsedRealtime() - account
 541									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 542						Log.d(LOGTAG, account.getJid()
 543								+ ": time out during connect reconnecting");
 544						reconnectAccount(account, true);
 545					} else {
 546						Log.d(LOGTAG,
 547								"seconds since last connect:"
 548										+ ((SystemClock.elapsedRealtime() - account
 549												.getXmppConnection().lastConnect) / 1000));
 550						Log.d(LOGTAG,
 551								account.getJid() + ": status="
 552										+ account.getStatus());
 553						// TODO notify user of ssl cert problem or auth problem
 554						// or what ever
 555					}
 556					// in any case. reschedule wakup call
 557					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 558				}
 559				if (accountChangedListener != null) {
 560					accountChangedListener.onAccountListChangedListener();
 561				}
 562			}
 563		}
 564		if (wakeLock.isHeld()) {
 565			wakeLock.release();
 566		}
 567		return START_STICKY;
 568	}
 569
 570	@Override
 571	public void onCreate() {
 572		ExceptionHelper.init(getApplicationContext());
 573		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 574		this.fileBackend = new FileBackend(getApplicationContext());
 575		this.accounts = databaseBackend.getAccounts();
 576
 577		this.getConversations();
 578		
 579		getContentResolver().registerContentObserver(
 580				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 581		this.pgpServiceConnection = new OpenPgpServiceConnection(
 582				getApplicationContext(), "org.sufficientlysecure.keychain");
 583		this.pgpServiceConnection.bindToService();
 584
 585		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 586		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 587				"XmppConnectionService");
 588	}
 589
 590	@Override
 591	public void onDestroy() {
 592		super.onDestroy();
 593		for (Account account : accounts) {
 594			if (account.getXmppConnection() != null) {
 595				disconnect(account, true);
 596			}
 597		}
 598	}
 599
 600	protected void scheduleWakeupCall(int seconds, boolean ping) {
 601		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 602		Context context = getApplicationContext();
 603		AlarmManager alarmManager = (AlarmManager) context
 604				.getSystemService(Context.ALARM_SERVICE);
 605
 606		if (ping) {
 607			if (this.pingIntent == null) {
 608				this.pingIntent = new Intent(context, EventReceiver.class);
 609				this.pingIntent.setAction("ping");
 610				this.pingIntent.putExtra("time", timeToWake);
 611				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 612						this.pingIntent, 0);
 613				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 614						timeToWake, pendingPingIntent);
 615				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 616			} else {
 617				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 618				if (scheduledTime < SystemClock.elapsedRealtime()
 619						|| (scheduledTime > timeToWake)) {
 620					this.pingIntent.putExtra("time", timeToWake);
 621					alarmManager.cancel(this.pendingPingIntent);
 622					this.pendingPingIntent = PendingIntent.getBroadcast(
 623							context, 0, this.pingIntent, 0);
 624					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 625							timeToWake, pendingPingIntent);
 626					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 627				}
 628			}
 629		} else {
 630			Intent intent = new Intent(context, EventReceiver.class);
 631			intent.setAction("ping_check");
 632			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 633					intent, 0);
 634			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 635					alarmIntent);
 636		}
 637
 638	}
 639
 640	public XmppConnection createConnection(Account account) {
 641		SharedPreferences sharedPref = getPreferences();
 642		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 643		XmppConnection connection = new XmppConnection(account, this.pm);
 644		connection.setOnMessagePacketReceivedListener(this.messageListener);
 645		connection.setOnStatusChangedListener(this.statusListener);
 646		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 647		connection
 648				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 649		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 650		connection
 651				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 652
 653					@Override
 654					public void onTLSExceptionReceived(String fingerprint,
 655							Account account) {
 656						Log.d(LOGTAG, "tls exception arrived in service");
 657						if (tlsException != null) {
 658							tlsException.onTLSExceptionReceived(fingerprint,
 659									account);
 660						}
 661					}
 662				});
 663		connection.setOnBindListener(new OnBindListener() {
 664
 665			@Override
 666			public void onBind(Account account) {
 667				databaseBackend.clearPresences(account);
 668				account.clearPresences(); // self presences
 669				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 670					updateRoster(account, null);
 671				}
 672				connectMultiModeConversations(account);
 673				if (convChangedListener != null) {
 674					convChangedListener.onConversationListChanged();
 675				}
 676			}
 677		});
 678		return connection;
 679	}
 680
 681	synchronized public void sendMessage(Message message, String presence) {
 682		Account account = message.getConversation().getAccount();
 683		Conversation conv = message.getConversation();
 684		MessagePacket packet = null;
 685		boolean saveInDb = false;
 686		boolean addToConversation = false;
 687		boolean send = false;
 688		if (account.getStatus() == Account.STATUS_ONLINE) {
 689			if (message.getType() == Message.TYPE_IMAGE) {
 690				mJingleConnectionManager.createNewConnection(message);
 691			} else {
 692				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 693					if (!conv.hasValidOtrSession()) {
 694						// starting otr session. messages will be send later
 695						conv.startOtrSession(getApplicationContext(), presence,true);
 696					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 697						// otr session aleary exists, creating message packet
 698						// accordingly
 699						packet = prepareMessagePacket(account, message,
 700								conv.getOtrSession());
 701						send = true;
 702						message.setStatus(Message.STATUS_SEND);
 703					}
 704					saveInDb = true;
 705					addToConversation = true;
 706				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 707					message.getConversation().endOtrIfNeeded();
 708					long keyId = message.getConversation().getContact()
 709							.getPgpKeyId();
 710					packet = new MessagePacket();
 711					packet.setType(MessagePacket.TYPE_CHAT);
 712					packet.setFrom(message.getConversation().getAccount()
 713							.getFullJid());
 714					packet.setTo(message.getCounterpart());
 715					packet.setBody("This is an XEP-0027 encryted message");
 716					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 717					message.setStatus(Message.STATUS_SEND);
 718					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 719					saveInDb = true;
 720					addToConversation = true;
 721					send = true;
 722				} else {
 723					message.getConversation().endOtrIfNeeded();
 724					// don't encrypt
 725					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 726						message.setStatus(Message.STATUS_SEND);
 727						saveInDb = true;
 728						addToConversation = true;
 729					}
 730					packet = prepareMessagePacket(account, message, null);
 731					send = true;
 732				}
 733			}
 734		} else {
 735			// account is offline
 736			saveInDb = true;
 737			addToConversation = true;
 738
 739		}
 740		if (saveInDb) {
 741			databaseBackend.createMessage(message);
 742		}
 743		if (addToConversation) {
 744			conv.getMessages().add(message);
 745			if (convChangedListener != null) {
 746				convChangedListener.onConversationListChanged();
 747			}
 748		}
 749		if ((send)&&(packet!=null)) {
 750			account.getXmppConnection().sendMessagePacket(packet);
 751		}
 752
 753	}
 754
 755	private void sendUnsendMessages(Conversation conversation) {
 756		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 757			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 758				Message message = conversation.getMessages().get(i);
 759				MessagePacket packet = prepareMessagePacket(
 760						conversation.getAccount(), message, null);
 761				conversation.getAccount().getXmppConnection()
 762						.sendMessagePacket(packet);
 763				message.setStatus(Message.STATUS_SEND);
 764				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 765					databaseBackend.updateMessage(message);
 766				} else {
 767					databaseBackend.deleteMessage(message);
 768					conversation.getMessages().remove(i);
 769					i--;
 770				}
 771			}
 772		}
 773	}
 774
 775	public MessagePacket prepareMessagePacket(Account account, Message message,
 776			Session otrSession) {
 777		MessagePacket packet = new MessagePacket();
 778		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 779			packet.setType(MessagePacket.TYPE_CHAT);
 780			if (otrSession != null) {
 781				try {
 782					packet.setBody(otrSession.transformSending(message
 783							.getBody()));
 784				} catch (OtrException e) {
 785					Log.d(LOGTAG,
 786							account.getJid()
 787									+ ": could not encrypt message to "
 788									+ message.getCounterpart());
 789				}
 790				packet.addChild("private","urn:xmpp:carbons:2");
 791				packet.addChild("no-copy","urn:xmpp:hints");
 792				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 793						+ otrSession.getSessionID().getUserID());
 794				packet.setFrom(account.getFullJid());
 795			} else {
 796				packet.setBody(message.getBody());
 797				packet.setTo(message.getCounterpart());
 798				packet.setFrom(account.getJid());
 799			}
 800		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 801			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 802			packet.setBody(message.getBody());
 803			packet.setTo(message.getCounterpart().split("/")[0]);
 804			packet.setFrom(account.getJid());
 805		}
 806		packet.setId(message.getUuid());
 807		return packet;
 808	}
 809
 810	private void getRoster(Account account,
 811			final OnRosterFetchedListener listener) {
 812		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 813		for (int i = 0; i < contacts.size(); ++i) {
 814			contacts.get(i).setAccount(account);
 815		}
 816		if (listener != null) {
 817			listener.onRosterFetched(contacts);
 818		}
 819	}
 820
 821	public List<Contact> getRoster(Account account) {
 822		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 823		for (int i = 0; i < contacts.size(); ++i) {
 824			contacts.get(i).setAccount(account);
 825		}
 826		return contacts;
 827	}
 828
 829	public void updateRoster(final Account account,
 830			final OnRosterFetchedListener listener) {
 831		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 832		if (!"".equals(account.getRosterVersion())) {
 833			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 834					+ account.getRosterVersion());
 835		} else {
 836			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 837		}
 838		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 839		account.getXmppConnection().sendIqPacket(iqPacket,
 840				new OnIqPacketReceived() {
 841
 842					@Override
 843					public void onIqPacketReceived(final Account account,
 844							IqPacket packet) {
 845						Element roster = packet.findChild("query");
 846						if (roster != null) {
 847							Log.d(LOGTAG, account.getJid()
 848									+ ": processing roster");
 849							processRosterItems(account, roster);
 850							StringBuilder mWhere = new StringBuilder();
 851							mWhere.append("jid NOT IN(");
 852							List<Element> items = roster.getChildren();
 853							for (int i = 0; i < items.size(); ++i) {
 854								mWhere.append(DatabaseUtils
 855										.sqlEscapeString(items.get(i)
 856												.getAttribute("jid")));
 857								if (i != items.size() - 1) {
 858									mWhere.append(",");
 859								}
 860							}
 861							mWhere.append(") and accountUuid = \"");
 862							mWhere.append(account.getUuid());
 863							mWhere.append("\"");
 864							List<Contact> contactsToDelete = databaseBackend
 865									.getContacts(mWhere.toString());
 866							for (Contact contact : contactsToDelete) {
 867								databaseBackend.deleteContact(contact);
 868								replaceContactInConversation(contact.getJid(),
 869										null);
 870							}
 871
 872						} else {
 873							Log.d(LOGTAG, account.getJid()
 874									+ ": empty roster returend");
 875						}
 876						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 877
 878							@Override
 879							public void phoneContactsMerged() {
 880								if (listener != null) {
 881									getRoster(account, listener);
 882								}
 883							}
 884						});
 885					}
 886				});
 887	}
 888
 889	public void mergePhoneContactsWithRoster(
 890			final OnPhoneContactsMerged listener) {
 891		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 892				new OnPhoneContactsLoadedListener() {
 893					@Override
 894					public void onPhoneContactsLoaded(
 895							Hashtable<String, Bundle> phoneContacts) {
 896						List<Contact> contacts = databaseBackend
 897								.getContactsByAccount(null);
 898						for (int i = 0; i < contacts.size(); ++i) {
 899							Contact contact = contacts.get(i);
 900							if (phoneContacts.containsKey(contact.getJid())) {
 901								Bundle phoneContact = phoneContacts.get(contact
 902										.getJid());
 903								String systemAccount = phoneContact
 904										.getInt("phoneid")
 905										+ "#"
 906										+ phoneContact.getString("lookup");
 907								contact.setSystemAccount(systemAccount);
 908								contact.setPhotoUri(phoneContact
 909										.getString("photouri"));
 910								contact.setDisplayName(phoneContact
 911										.getString("displayname"));
 912								databaseBackend.updateContact(contact);
 913								replaceContactInConversation(contact.getJid(),
 914										contact);
 915							} else {
 916								if ((contact.getSystemAccount() != null)
 917										|| (contact.getProfilePhoto() != null)) {
 918									contact.setSystemAccount(null);
 919									contact.setPhotoUri(null);
 920									databaseBackend.updateContact(contact);
 921									replaceContactInConversation(
 922											contact.getJid(), contact);
 923								}
 924							}
 925						}
 926						if (listener != null) {
 927							listener.phoneContactsMerged();
 928						}
 929					}
 930				});
 931	}
 932
 933	public List<Conversation> getConversations() {
 934		if (this.conversations == null) {
 935			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 936			for (Account account : this.accounts) {
 937				accountLookupTable.put(account.getUuid(), account);
 938			}
 939			this.conversations = databaseBackend
 940					.getConversations(Conversation.STATUS_AVAILABLE);
 941			for (Conversation conv : this.conversations) {
 942				Account account = accountLookupTable.get(conv.getAccountUuid());
 943				conv.setAccount(account);
 944				conv.setContact(findContact(account, conv.getContactJid()));
 945				conv.setMessages(databaseBackend.getMessages(conv, 50));
 946			}
 947		}
 948		Collections.sort(this.conversations, new Comparator<Conversation>() {
 949			@Override
 950			public int compare(Conversation lhs, Conversation rhs) {
 951				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 952						.getLatestMessage().getTimeSent());
 953			}
 954		});
 955		return this.conversations;
 956	}
 957
 958	public List<Account> getAccounts() {
 959		return this.accounts;
 960	}
 961
 962	public Contact findContact(Account account, String jid) {
 963		Contact contact = databaseBackend.findContact(account, jid);
 964		if (contact != null) {
 965			contact.setAccount(account);
 966		}
 967		return contact;
 968	}
 969
 970	public Conversation findOrCreateConversation(Account account, String jid,
 971			boolean muc) {
 972		for (Conversation conv : this.getConversations()) {
 973			if ((conv.getAccount().equals(account))
 974					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 975				return conv;
 976			}
 977		}
 978		Conversation conversation = databaseBackend.findConversation(account,
 979				jid);
 980		if (conversation != null) {
 981			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 982			conversation.setAccount(account);
 983			if (muc) {
 984				conversation.setMode(Conversation.MODE_MULTI);
 985			} else {
 986				conversation.setMode(Conversation.MODE_SINGLE);
 987			}
 988			conversation.setMessages(databaseBackend.getMessages(conversation,
 989					50));
 990			this.databaseBackend.updateConversation(conversation);
 991			conversation.setContact(findContact(account,
 992					conversation.getContactJid()));
 993		} else {
 994			String conversationName;
 995			Contact contact = findContact(account, jid);
 996			if (contact != null) {
 997				conversationName = contact.getDisplayName();
 998			} else {
 999				conversationName = jid.split("@")[0];
1000			}
1001			if (muc) {
1002				conversation = new Conversation(conversationName, account, jid,
1003						Conversation.MODE_MULTI);
1004			} else {
1005				conversation = new Conversation(conversationName, account, jid,
1006						Conversation.MODE_SINGLE);
1007			}
1008			conversation.setContact(contact);
1009			this.databaseBackend.createConversation(conversation);
1010		}
1011		this.conversations.add(conversation);
1012		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1013			joinMuc(conversation);
1014		}
1015		if (this.convChangedListener != null) {
1016			this.convChangedListener.onConversationListChanged();
1017		}
1018		return conversation;
1019	}
1020
1021	public void archiveConversation(Conversation conversation) {
1022		if (conversation.getMode() == Conversation.MODE_MULTI) {
1023			leaveMuc(conversation);
1024		} else {
1025			conversation.endOtrIfNeeded();
1026		}
1027		this.databaseBackend.updateConversation(conversation);
1028		this.conversations.remove(conversation);
1029		if (this.convChangedListener != null) {
1030			this.convChangedListener.onConversationListChanged();
1031		}
1032	}
1033
1034	public int getConversationCount() {
1035		return this.databaseBackend.getConversationCount();
1036	}
1037
1038	public void createAccount(Account account) {
1039		databaseBackend.createAccount(account);
1040		this.accounts.add(account);
1041		this.reconnectAccount(account, false);
1042		if (accountChangedListener != null)
1043			accountChangedListener.onAccountListChangedListener();
1044	}
1045
1046	public void deleteContact(Contact contact) {
1047		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1048		Element query = iq.query("jabber:iq:roster");
1049		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1050		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1051		replaceContactInConversation(contact.getJid(), null);
1052		databaseBackend.deleteContact(contact);
1053	}
1054
1055	public void updateAccount(Account account) {
1056		this.statusListener.onStatusChanged(account);
1057		databaseBackend.updateAccount(account);
1058		reconnectAccount(account, false);
1059		if (accountChangedListener != null)
1060			accountChangedListener.onAccountListChangedListener();
1061	}
1062
1063	public void deleteAccount(Account account) {
1064		if (account.getXmppConnection() != null) {
1065			this.disconnect(account, true);
1066		}
1067		databaseBackend.deleteAccount(account);
1068		this.accounts.remove(account);
1069		if (accountChangedListener != null)
1070			accountChangedListener.onAccountListChangedListener();
1071	}
1072
1073	public void setOnConversationListChangedListener(
1074			OnConversationListChangedListener listener) {
1075		this.convChangedListener = listener;
1076		this.convChangedListenerCount++;
1077	}
1078
1079	public void removeOnConversationListChangedListener() {
1080		this.convChangedListenerCount--;
1081		if (this.convChangedListenerCount==0) {
1082			this.convChangedListener = null;
1083		}
1084	}
1085
1086	public void setOnAccountListChangedListener(
1087			OnAccountListChangedListener listener) {
1088		this.accountChangedListener = listener;
1089	}
1090
1091	public void removeOnAccountListChangedListener() {
1092		this.accountChangedListener = null;
1093	}
1094
1095	public void connectMultiModeConversations(Account account) {
1096		List<Conversation> conversations = getConversations();
1097		for (int i = 0; i < conversations.size(); i++) {
1098			Conversation conversation = conversations.get(i);
1099			if ((conversation.getMode() == Conversation.MODE_MULTI)
1100					&& (conversation.getAccount() == account)) {
1101				joinMuc(conversation);
1102			}
1103		}
1104	}
1105
1106	public void joinMuc(Conversation conversation) {
1107		String[] mucParts = conversation.getContactJid().split("/");
1108		String muc;
1109		String nick;
1110		if (mucParts.length == 2) {
1111			muc = mucParts[0];
1112			nick = mucParts[1];
1113		} else {
1114			muc = mucParts[0];
1115			nick = conversation.getAccount().getUsername();
1116		}
1117		PresencePacket packet = new PresencePacket();
1118		packet.setAttribute("to", muc + "/" + nick);
1119		Element x = new Element("x");
1120		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1121		if (conversation.getMessages().size() != 0) {
1122			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1123			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1124			x.addChild("history").setAttribute("seconds", diff + "");
1125		}
1126		packet.addChild(x);
1127		conversation.getAccount().getXmppConnection()
1128				.sendPresencePacket(packet);
1129	}
1130
1131	private OnRenameListener renameListener = null;
1132
1133	public void setOnRenameListener(OnRenameListener listener) {
1134		this.renameListener = listener;
1135	}
1136
1137	public void renameInMuc(final Conversation conversation, final String nick) {
1138		final MucOptions options = conversation.getMucOptions();
1139		if (options.online()) {
1140			options.setOnRenameListener(new OnRenameListener() {
1141
1142				@Override
1143				public void onRename(boolean success) {
1144					if (renameListener != null) {
1145						renameListener.onRename(success);
1146					}
1147					if (success) {
1148						databaseBackend.updateConversation(conversation);
1149					}
1150				}
1151			});
1152			options.flagAboutToRename();
1153			PresencePacket packet = new PresencePacket();
1154			packet.setAttribute("to",
1155					conversation.getContactJid().split("/")[0] + "/" + nick);
1156			packet.setAttribute("from", conversation.getAccount().getFullJid());
1157
1158			conversation.getAccount().getXmppConnection()
1159					.sendPresencePacket(packet, null);
1160		} else {
1161			String jid = conversation.getContactJid().split("/")[0] + "/"
1162					+ nick;
1163			conversation.setContactJid(jid);
1164			databaseBackend.updateConversation(conversation);
1165			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1166				joinMuc(conversation);
1167			}
1168		}
1169	}
1170
1171	public void leaveMuc(Conversation conversation) {
1172		PresencePacket packet = new PresencePacket();
1173		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1174		packet.setAttribute("from", conversation.getAccount().getFullJid());
1175		packet.setAttribute("type", "unavailable");
1176		Log.d(LOGTAG,"send leaving muc " + packet);
1177		conversation.getAccount().getXmppConnection()
1178				.sendPresencePacket(packet);
1179		conversation.getMucOptions().setOffline();
1180	}
1181
1182	public void disconnect(Account account, boolean force) {
1183		if ((account.getStatus() == Account.STATUS_ONLINE)
1184				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1185			if (!force) {
1186				List<Conversation> conversations = getConversations();
1187				for (int i = 0; i < conversations.size(); i++) {
1188					Conversation conversation = conversations.get(i);
1189					if (conversation.getAccount() == account) {
1190						if (conversation.getMode() == Conversation.MODE_MULTI) {
1191							leaveMuc(conversation);
1192						} else {
1193							conversation.endOtrIfNeeded();
1194						}
1195					}
1196				}
1197			}
1198			account.getXmppConnection().disconnect(force);
1199		}
1200	}
1201
1202	@Override
1203	public IBinder onBind(Intent intent) {
1204		return mBinder;
1205	}
1206
1207	public void updateContact(Contact contact) {
1208		databaseBackend.updateContact(contact);
1209		replaceContactInConversation(contact.getJid(), contact);
1210	}
1211
1212	public void updateMessage(Message message) {
1213		databaseBackend.updateMessage(message);
1214	}
1215
1216	public void createContact(Contact contact) {
1217		SharedPreferences sharedPref = getPreferences();
1218		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1219		if (autoGrant) {
1220			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1221			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1222		}
1223		databaseBackend.createContact(contact);
1224		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1225		Element query = new Element("query");
1226		query.setAttribute("xmlns", "jabber:iq:roster");
1227		Element item = new Element("item");
1228		item.setAttribute("jid", contact.getJid());
1229		item.setAttribute("name", contact.getJid());
1230		query.addChild(item);
1231		iq.addChild(query);
1232		Account account = contact.getAccount();
1233		account.getXmppConnection().sendIqPacket(iq, null);
1234		if (autoGrant) {
1235			requestPresenceUpdatesFrom(contact);
1236		}
1237		replaceContactInConversation(contact.getJid(), contact);
1238	}
1239
1240	public void requestPresenceUpdatesFrom(Contact contact) {
1241		// Requesting a Subscription type=subscribe
1242		PresencePacket packet = new PresencePacket();
1243		packet.setAttribute("type", "subscribe");
1244		packet.setAttribute("to", contact.getJid());
1245		packet.setAttribute("from", contact.getAccount().getJid());
1246		Log.d(LOGTAG, packet.toString());
1247		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1248	}
1249
1250	public void stopPresenceUpdatesFrom(Contact contact) {
1251		// Unsubscribing type='unsubscribe'
1252		PresencePacket packet = new PresencePacket();
1253		packet.setAttribute("type", "unsubscribe");
1254		packet.setAttribute("to", contact.getJid());
1255		packet.setAttribute("from", contact.getAccount().getJid());
1256		Log.d(LOGTAG, packet.toString());
1257		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1258	}
1259
1260	public void stopPresenceUpdatesTo(Contact contact) {
1261		// Canceling a Subscription type=unsubscribed
1262		PresencePacket packet = new PresencePacket();
1263		packet.setAttribute("type", "unsubscribed");
1264		packet.setAttribute("to", contact.getJid());
1265		packet.setAttribute("from", contact.getAccount().getJid());
1266		Log.d(LOGTAG, packet.toString());
1267		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1268	}
1269
1270	public void sendPresenceUpdatesTo(Contact contact) {
1271		// type='subscribed'
1272		PresencePacket packet = new PresencePacket();
1273		packet.setAttribute("type", "subscribed");
1274		packet.setAttribute("to", contact.getJid());
1275		packet.setAttribute("from", contact.getAccount().getJid());
1276		Log.d(LOGTAG, packet.toString());
1277		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1278	}
1279
1280	public void sendPgpPresence(Account account, String signature) {
1281		PresencePacket packet = new PresencePacket();
1282		packet.setAttribute("from", account.getFullJid());
1283		Element status = new Element("status");
1284		status.setContent("online");
1285		packet.addChild(status);
1286		Element x = new Element("x");
1287		x.setAttribute("xmlns", "jabber:x:signed");
1288		x.setContent(signature);
1289		packet.addChild(x);
1290		account.getXmppConnection().sendPresencePacket(packet);
1291	}
1292
1293	public void generatePgpAnnouncement(Account account)
1294			throws PgpEngine.UserInputRequiredException {
1295		if (account.getStatus() == Account.STATUS_ONLINE) {
1296			String signature = getPgpEngine().generateSignature("online");
1297			account.setKey("pgp_signature", signature);
1298			databaseBackend.updateAccount(account);
1299			sendPgpPresence(account, signature);
1300		}
1301	}
1302
1303	public void updateConversation(Conversation conversation) {
1304		this.databaseBackend.updateConversation(conversation);
1305	}
1306
1307	public Contact findContact(String uuid) {
1308		Contact contact = this.databaseBackend.getContact(uuid);
1309		if (contact!=null) {
1310			for (Account account : getAccounts()) {
1311				if (contact.getAccountUuid().equals(account.getUuid())) {
1312					contact.setAccount(account);
1313				}
1314			}
1315		}
1316		return contact;
1317	}
1318
1319	public void removeOnTLSExceptionReceivedListener() {
1320		this.tlsException = null;
1321	}
1322
1323	// TODO dont let thread sleep but schedule wake up
1324	public void reconnectAccount(final Account account, final boolean force) {
1325		new Thread(new Runnable() {
1326
1327			@Override
1328			public void run() {
1329				if (account.getXmppConnection() != null) {
1330					disconnect(account, force);
1331				}
1332				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1333					if (account.getXmppConnection() == null) {
1334						account.setXmppConnection(createConnection(account));
1335					}
1336					Thread thread = new Thread(account.getXmppConnection());
1337					thread.start();
1338					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1339				}
1340			}
1341		}).start();
1342	}
1343
1344	public void updateConversationInGui() {
1345		if (convChangedListener != null) {
1346			convChangedListener.onConversationListChanged();
1347		}
1348	}
1349
1350	public void sendConversationSubject(Conversation conversation,
1351			String subject) {
1352		MessagePacket packet = new MessagePacket();
1353		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1354		packet.setTo(conversation.getContactJid().split("/")[0]);
1355		Element subjectChild = new Element("subject");
1356		subjectChild.setContent(subject);
1357		packet.addChild(subjectChild);
1358		packet.setFrom(conversation.getAccount().getJid());
1359		Account account = conversation.getAccount();
1360		if (account.getStatus() == Account.STATUS_ONLINE) {
1361			account.getXmppConnection().sendMessagePacket(packet);
1362		}
1363	}
1364
1365	public void inviteToConference(Conversation conversation,
1366			List<Contact> contacts) {
1367		for (Contact contact : contacts) {
1368			MessagePacket packet = new MessagePacket();
1369			packet.setTo(conversation.getContactJid().split("/")[0]);
1370			packet.setFrom(conversation.getAccount().getFullJid());
1371			Element x = new Element("x");
1372			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1373			Element invite = new Element("invite");
1374			invite.setAttribute("to", contact.getJid());
1375			x.addChild(invite);
1376			packet.addChild(x);
1377			Log.d(LOGTAG, packet.toString());
1378			conversation.getAccount().getXmppConnection()
1379					.sendMessagePacket(packet);
1380		}
1381
1382	}
1383	
1384	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1385		boolean marked = false;
1386		for(Conversation conversation : getConversations()) {
1387			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1388				for(Message message : conversation.getMessages()) {
1389					if (message.getUuid().equals(uuid)) {
1390						markMessage(message, status);
1391						marked = true;
1392						break;
1393					}
1394				}
1395				break;
1396			}
1397		}
1398		return marked;
1399	}
1400	
1401	public void markMessage(Message message, int status) {
1402		message.setStatus(status);
1403		databaseBackend.updateMessage(message);
1404		if (convChangedListener!=null) {
1405			convChangedListener.onConversationListChanged();
1406		}
1407	}
1408	
1409	public SharedPreferences getPreferences() {
1410		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1411	}
1412}