XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.io.File;
   4import java.text.ParseException;
   5import java.text.SimpleDateFormat;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.Random;
  13
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  23import eu.siacs.conversations.entities.Account;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.utils.ExceptionHelper;
  37import eu.siacs.conversations.utils.MessageParser;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  46import eu.siacs.conversations.xmpp.OnStatusChanged;
  47import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  48import eu.siacs.conversations.xmpp.XmppConnection;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  51import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  52import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  53import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  54import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  55import android.app.AlarmManager;
  56import android.app.PendingIntent;
  57import android.app.Service;
  58import android.content.Context;
  59import android.content.Intent;
  60import android.content.SharedPreferences;
  61import android.database.ContentObserver;
  62import android.database.DatabaseUtils;
  63import android.net.ConnectivityManager;
  64import android.net.NetworkInfo;
  65import android.net.Uri;
  66import android.os.Binder;
  67import android.os.Bundle;
  68import android.os.IBinder;
  69import android.os.PowerManager;
  70import android.os.PowerManager.WakeLock;
  71import android.os.SystemClock;
  72import android.preference.PreferenceManager;
  73import android.provider.ContactsContract;
  74import android.util.Log;
  75
  76public class XmppConnectionService extends Service {
  77
  78	protected static final String LOGTAG = "xmppService";
  79	public DatabaseBackend databaseBackend;
  80	private FileBackend fileBackend;
  81
  82	public long startDate;
  83
  84	private static final int PING_MAX_INTERVAL = 300;
  85	private static final int PING_MIN_INTERVAL = 10;
  86	private static final int PING_TIMEOUT = 5;
  87	private static final int CONNECT_TIMEOUT = 60;
  88	private static final long CARBON_GRACE_PERIOD = 60000L;
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  93	
  94	public OnConversationListChangedListener convChangedListener = null;
  95	private int convChangedListenerCount = 0;
  96	private OnAccountListChangedListener accountChangedListener = null;
  97	private OnTLSExceptionReceived tlsException = null;
  98
  99	public void setOnTLSExceptionReceivedListener(
 100			OnTLSExceptionReceived listener) {
 101		tlsException = listener;
 102	}
 103
 104	private Random mRandom = new Random(System.currentTimeMillis());
 105
 106	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 107
 108	private ContentObserver contactObserver = new ContentObserver(null) {
 109		@Override
 110		public void onChange(boolean selfChange) {
 111			super.onChange(selfChange);
 112			Log.d(LOGTAG, "contact list has changed");
 113			mergePhoneContactsWithRoster(null);
 114		}
 115	};
 116
 117	private XmppConnectionService service = this;
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if(PreferenceManager
 128					.getDefaultSharedPreferences(getApplicationContext())
 129					.getBoolean("notification_grace_period_after_carbon_received", true)){
 130				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 131			}
 132
 133			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 134				String pgpBody = MessageParser.getPgpBody(packet);
 135				if (pgpBody != null) {
 136					message = MessageParser.parsePgpChat(pgpBody, packet,
 137							account, service);
 138					message.markUnread();
 139				} else if (packet.hasChild("body")
 140						&& (packet.getBody().startsWith("?OTR"))) {
 141					message = MessageParser.parseOtrChat(packet, account,
 142							service);
 143					if (message != null) {
 144						message.markUnread();
 145					}
 146				} else if (packet.hasChild("body")) {
 147					message = MessageParser.parsePlainTextChat(packet, account,
 148							service);
 149					message.markUnread();
 150				} else if (packet.hasChild("received")
 151						|| (packet.hasChild("sent"))) {
 152					message = MessageParser.parseCarbonMessage(packet, account,
 153							service);
 154					if (message != null) {
 155						if (message.getStatus() == Message.STATUS_SEND) {
 156							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 157							notify = false;
 158							message.getConversation().markRead();
 159						} else {
 160							message.markUnread();
 161						}
 162					}
 163				}
 164
 165			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 166				message = MessageParser
 167						.parseGroupchat(packet, account, service);
 168				if (message != null) {
 169					if (message.getStatus() == Message.STATUS_RECIEVED) {
 170						message.markUnread();
 171					} else {
 172						message.getConversation().markRead();
 173						notify = false;
 174					}
 175				}
 176			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 177				MessageParser.parseError(packet, account, service);
 178				return;
 179			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 180				if (packet.hasChild("x")) {
 181					Element x = packet.findChild("x");
 182					if (x.hasChild("invite")) {
 183						findOrCreateConversation(account, packet.getFrom(),
 184								true);
 185						if (convChangedListener != null) {
 186							convChangedListener.onConversationListChanged();
 187						}
 188						Log.d(LOGTAG,
 189								"invitation received to " + packet.getFrom());
 190					}
 191
 192				} else {
 193					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 194				}
 195			}
 196			if ((message == null) || (message.getBody() == null)) {
 197				return;
 198			}
 199			if (packet.hasChild("delay")) {
 200				try {
 201					String stamp = packet.findChild("delay").getAttribute(
 202							"stamp");
 203					stamp = stamp.replace("Z", "+0000");
 204					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 205							.parse(stamp);
 206					message.setTime(date.getTime());
 207				} catch (ParseException e) {
 208					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 209				}
 210			}
 211			Conversation conversation = message.getConversation();
 212			conversation.getMessages().add(message);
 213			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 214				databaseBackend.createMessage(message);
 215			}
 216			if (convChangedListener != null) {
 217				convChangedListener.onConversationListChanged();
 218			} else {
 219				UIHelper.updateNotification(getApplicationContext(),
 220						getConversations(), message.getConversation(), notify);
 221			}
 222		}
 223	};
 224	private OnStatusChanged statusListener = new OnStatusChanged() {
 225
 226		@Override
 227		public void onStatusChanged(Account account) {
 228			if (accountChangedListener != null) {
 229				accountChangedListener.onAccountListChangedListener();
 230			}
 231			if (account.getStatus() == Account.STATUS_ONLINE) {
 232				List<Conversation> conversations = getConversations();
 233				for (int i = 0; i < conversations.size(); ++i) {
 234					if (conversations.get(i).getAccount() == account) {
 235						sendUnsendMessages(conversations.get(i));
 236					}
 237				}
 238				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 239			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 240				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 241					int timeToReconnect = mRandom.nextInt(50) + 10;
 242					scheduleWakeupCall(timeToReconnect, false);
 243				}
 244
 245			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 246				databaseBackend.updateAccount(account);
 247				reconnectAccount(account, true);
 248			} else {
 249				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 250			}
 251		}
 252	};
 253
 254	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 255
 256		@Override
 257		public void onPresencePacketReceived(Account account,
 258				PresencePacket packet) {
 259			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 260				Conversation muc = findMuc(
 261						packet.getAttribute("from").split("/")[0], account);
 262				if (muc != null) {
 263					muc.getMucOptions().processPacket(packet);
 264				} else {
 265					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 266				}
 267			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 268				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 269				if (muc != null) {
 270					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 271					int error = muc.getMucOptions().getError();
 272					muc.getMucOptions().processPacket(packet);
 273					if ((muc.getMucOptions().getError() != error)
 274							&& (convChangedListener != null)) {
 275						Log.d(LOGTAG, "muc error status changed");
 276						convChangedListener.onConversationListChanged();
 277					}
 278				}
 279			} else {
 280				String[] fromParts = packet.getAttribute("from").split("/");
 281				String type = packet.getAttribute("type");
 282				if (fromParts[0].equals(account.getJid())) {
 283					if (fromParts.length==2) {
 284						if (type == null) {
 285							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 286						} else if (type.equals("unavailable")) {
 287							account.removePresence(fromParts[1]);
 288						}
 289					}
 290						
 291				} else {
 292					Contact contact = findContact(account, fromParts[0]);
 293					if (contact == null) {
 294						// most likely roster not synced
 295						return;
 296					}
 297					if (type == null) {
 298						if (fromParts.length == 2) {
 299							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 300							PgpEngine pgp = getPgpEngine();
 301							if (pgp != null) {
 302								Element x = packet.findChild("x","jabber:x:signed");
 303								if (x != null) {
 304									try {
 305										Element status = packet.findChild("status");
 306										String msg;
 307										if (status!=null) {
 308											msg = status.getContent();
 309										} else {
 310											msg = "";
 311										}
 312										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 313														.getContent()));
 314									} catch (OpenPgpException e) {
 315										Log.d(LOGTAG, "faulty pgp. just ignore");
 316									}
 317								}
 318							}
 319							databaseBackend.updateContact(contact);
 320						} else {
 321							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 322						}
 323					} else if (type.equals("unavailable")) {
 324						if (fromParts.length != 2) {
 325							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 326						} else {
 327							contact.removePresence(fromParts[1]);
 328							databaseBackend.updateContact(contact);
 329						}
 330					} else if (type.equals("subscribe")) {
 331						if (contact
 332								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 333							sendPresenceUpdatesTo(contact);
 334							contact.setSubscriptionOption(Contact.Subscription.FROM);
 335							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 336							replaceContactInConversation(contact.getJid(),
 337									contact);
 338							databaseBackend.updateContact(contact);
 339							if ((contact
 340									.getSubscriptionOption(Contact.Subscription.ASKING))
 341									&& (!contact
 342											.getSubscriptionOption(Contact.Subscription.TO))) {
 343								requestPresenceUpdatesFrom(contact);
 344							}
 345						} else {
 346							// TODO: ask user to handle it maybe
 347						}
 348					} else {
 349						//Log.d(LOGTAG, packet.toString());
 350					}
 351					replaceContactInConversation(contact.getJid(), contact);
 352				}
 353			}
 354		}
 355	};
 356
 357	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 358
 359		@Override
 360		public void onIqPacketReceived(Account account, IqPacket packet) {
 361			if (packet.hasChild("query")) {
 362				Element query = packet.findChild("query");
 363				String xmlns = query.getAttribute("xmlns");
 364				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 365					processRosterItems(account, query);
 366					mergePhoneContactsWithRoster(null);
 367				}
 368			} 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 Message attachImageToConversation(Conversation conversation, String presence, Uri uri) {
 408		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 409		message.setPresence(presence);
 410		message.setType(Message.TYPE_IMAGE);
 411		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 412		conversation.getMessages().add(message);
 413		databaseBackend.createMessage(message);
 414		sendMessage(message, null);
 415		return message;
 416	}
 417	
 418	
 419	protected Conversation findMuc(String name, Account account) {
 420		for (Conversation conversation : this.conversations) {
 421			if (conversation.getContactJid().split("/")[0].equals(name)
 422					&& (conversation.getAccount() == account)) {
 423				return conversation;
 424			}
 425		}
 426		return null;
 427	}
 428
 429	private void processRosterItems(Account account, Element elements) {
 430		String version = elements.getAttribute("ver");
 431		if (version != null) {
 432			account.setRosterVersion(version);
 433			databaseBackend.updateAccount(account);
 434		}
 435		for (Element item : elements.getChildren()) {
 436			if (item.getName().equals("item")) {
 437				String jid = item.getAttribute("jid");
 438				String subscription = item.getAttribute("subscription");
 439				Contact contact = databaseBackend.findContact(account, jid);
 440				if (contact == null) {
 441					if (!subscription.equals("remove")) {
 442						String name = item.getAttribute("name");
 443						if (name == null) {
 444							name = jid.split("@")[0];
 445						}
 446						contact = new Contact(account, name, jid, null);
 447						contact.parseSubscriptionFromElement(item);
 448						databaseBackend.createContact(contact);
 449					}
 450				} else {
 451					if (subscription.equals("remove")) {
 452						databaseBackend.deleteContact(contact);
 453						replaceContactInConversation(contact.getJid(), null);
 454					} else {
 455						contact.parseSubscriptionFromElement(item);
 456						databaseBackend.updateContact(contact);
 457						replaceContactInConversation(contact.getJid(), contact);
 458					}
 459				}
 460			}
 461		}
 462	}
 463
 464	private void replaceContactInConversation(String jid, Contact contact) {
 465		List<Conversation> conversations = getConversations();
 466		for (int i = 0; i < conversations.size(); ++i) {
 467			if ((conversations.get(i).getContactJid().equals(jid))) {
 468				conversations.get(i).setContact(contact);
 469				break;
 470			}
 471		}
 472	}
 473
 474	public class XmppConnectionBinder extends Binder {
 475		public XmppConnectionService getService() {
 476			return XmppConnectionService.this;
 477		}
 478	}
 479
 480	@Override
 481	public int onStartCommand(Intent intent, int flags, int startId) {
 482		this.wakeLock.acquire();
 483		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 484		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 485				.getSystemService(Context.CONNECTIVITY_SERVICE);
 486		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 487		boolean isConnected = activeNetwork != null
 488				&& activeNetwork.isConnected();
 489
 490		for (Account account : accounts) {
 491			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 492				if (!isConnected) {
 493					account.setStatus(Account.STATUS_NO_INTERNET);
 494					if (statusListener != null) {
 495						statusListener.onStatusChanged(account);
 496					}
 497				} else {
 498					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 499						account.setStatus(Account.STATUS_OFFLINE);
 500						if (statusListener != null) {
 501							statusListener.onStatusChanged(account);
 502						}
 503					}
 504
 505					// TODO 3 remaining cases
 506					if (account.getStatus() == Account.STATUS_ONLINE) {
 507						long lastReceived = account.getXmppConnection().lastPaketReceived;
 508						long lastSent = account.getXmppConnection().lastPingSent;
 509						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 510							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 511							this.reconnectAccount(account, true);
 512						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 513							account.getXmppConnection().sendPing();
 514							account.getXmppConnection().lastPingSent = SystemClock
 515									.elapsedRealtime();
 516							this.scheduleWakeupCall(2, false);
 517						}
 518					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 519						if (account.getXmppConnection() == null) {
 520							account.setXmppConnection(this
 521									.createConnection(account));
 522						}
 523						account.getXmppConnection().lastPingSent = SystemClock
 524								.elapsedRealtime();
 525						new Thread(account.getXmppConnection()).start();
 526					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 527							&& ((SystemClock.elapsedRealtime() - account
 528									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 529						Log.d(LOGTAG, account.getJid()
 530								+ ": time out during connect reconnecting");
 531						reconnectAccount(account, true);
 532					} else {
 533						Log.d(LOGTAG,
 534								"seconds since last connect:"
 535										+ ((SystemClock.elapsedRealtime() - account
 536												.getXmppConnection().lastConnect) / 1000));
 537						Log.d(LOGTAG,
 538								account.getJid() + ": status="
 539										+ account.getStatus());
 540						// TODO notify user of ssl cert problem or auth problem
 541						// or what ever
 542					}
 543					// in any case. reschedule wakup call
 544					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 545				}
 546				if (accountChangedListener != null) {
 547					accountChangedListener.onAccountListChangedListener();
 548				}
 549			}
 550		}
 551		if (wakeLock.isHeld()) {
 552			wakeLock.release();
 553		}
 554		return START_STICKY;
 555	}
 556
 557	@Override
 558	public void onCreate() {
 559		ExceptionHelper.init(getApplicationContext());
 560		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 561		this.fileBackend = new FileBackend(getApplicationContext());
 562		this.accounts = databaseBackend.getAccounts();
 563
 564		this.getConversations();
 565		
 566		getContentResolver().registerContentObserver(
 567				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 568		this.pgpServiceConnection = new OpenPgpServiceConnection(
 569				getApplicationContext(), "org.sufficientlysecure.keychain");
 570		this.pgpServiceConnection.bindToService();
 571
 572		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 573		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 574				"XmppConnectionService");
 575	}
 576
 577	@Override
 578	public void onDestroy() {
 579		super.onDestroy();
 580		for (Account account : accounts) {
 581			if (account.getXmppConnection() != null) {
 582				disconnect(account, true);
 583			}
 584		}
 585	}
 586
 587	protected void scheduleWakeupCall(int seconds, boolean ping) {
 588		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 589		Context context = getApplicationContext();
 590		AlarmManager alarmManager = (AlarmManager) context
 591				.getSystemService(Context.ALARM_SERVICE);
 592
 593		if (ping) {
 594			if (this.pingIntent == null) {
 595				this.pingIntent = new Intent(context, EventReceiver.class);
 596				this.pingIntent.setAction("ping");
 597				this.pingIntent.putExtra("time", timeToWake);
 598				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 599						this.pingIntent, 0);
 600				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 601						timeToWake, pendingPingIntent);
 602				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 603			} else {
 604				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 605				if (scheduledTime < SystemClock.elapsedRealtime()
 606						|| (scheduledTime > timeToWake)) {
 607					this.pingIntent.putExtra("time", timeToWake);
 608					alarmManager.cancel(this.pendingPingIntent);
 609					this.pendingPingIntent = PendingIntent.getBroadcast(
 610							context, 0, this.pingIntent, 0);
 611					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 612							timeToWake, pendingPingIntent);
 613					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 614				}
 615			}
 616		} else {
 617			Intent intent = new Intent(context, EventReceiver.class);
 618			intent.setAction("ping_check");
 619			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 620					intent, 0);
 621			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 622					alarmIntent);
 623		}
 624
 625	}
 626
 627	public XmppConnection createConnection(Account account) {
 628		SharedPreferences sharedPref = PreferenceManager
 629				.getDefaultSharedPreferences(getApplicationContext());
 630		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 631		XmppConnection connection = new XmppConnection(account, this.pm);
 632		connection.setOnMessagePacketReceivedListener(this.messageListener);
 633		connection.setOnStatusChangedListener(this.statusListener);
 634		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 635		connection
 636				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 637		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 638		connection
 639				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 640
 641					@Override
 642					public void onTLSExceptionReceived(String fingerprint,
 643							Account account) {
 644						Log.d(LOGTAG, "tls exception arrived in service");
 645						if (tlsException != null) {
 646							tlsException.onTLSExceptionReceived(fingerprint,
 647									account);
 648						}
 649					}
 650				});
 651		connection.setOnBindListener(new OnBindListener() {
 652
 653			@Override
 654			public void onBind(Account account) {
 655				databaseBackend.clearPresences(account);
 656				account.clearPresences(); // self presences
 657				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 658					updateRoster(account, null);
 659				}
 660				connectMultiModeConversations(account);
 661				if (convChangedListener != null) {
 662					convChangedListener.onConversationListChanged();
 663				}
 664			}
 665		});
 666		return connection;
 667	}
 668
 669	synchronized public void sendMessage(Message message, String presence) {
 670		Account account = message.getConversation().getAccount();
 671		Conversation conv = message.getConversation();
 672		MessagePacket packet = null;
 673		boolean saveInDb = false;
 674		boolean addToConversation = false;
 675		boolean send = false;
 676		if (account.getStatus() == Account.STATUS_ONLINE) {
 677			if (message.getType() == Message.TYPE_IMAGE) {
 678				mJingleConnectionManager.createNewConnection(message);
 679			} else {
 680				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 681					if (!conv.hasValidOtrSession()) {
 682						// starting otr session. messages will be send later
 683						conv.startOtrSession(getApplicationContext(), presence,true);
 684					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 685						// otr session aleary exists, creating message packet
 686						// accordingly
 687						packet = prepareMessagePacket(account, message,
 688								conv.getOtrSession());
 689						send = true;
 690						message.setStatus(Message.STATUS_SEND);
 691					}
 692					saveInDb = true;
 693					addToConversation = true;
 694				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 695					message.getConversation().endOtrIfNeeded();
 696					long keyId = message.getConversation().getContact()
 697							.getPgpKeyId();
 698					packet = new MessagePacket();
 699					packet.setType(MessagePacket.TYPE_CHAT);
 700					packet.setFrom(message.getConversation().getAccount()
 701							.getFullJid());
 702					packet.setTo(message.getCounterpart());
 703					packet.setBody("This is an XEP-0027 encryted message");
 704					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 705					message.setStatus(Message.STATUS_SEND);
 706					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 707					saveInDb = true;
 708					addToConversation = true;
 709					send = true;
 710				} else {
 711					message.getConversation().endOtrIfNeeded();
 712					// don't encrypt
 713					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 714						message.setStatus(Message.STATUS_SEND);
 715						saveInDb = true;
 716						addToConversation = true;
 717					}
 718					packet = prepareMessagePacket(account, message, null);
 719					send = true;
 720				}
 721			}
 722		} else {
 723			// account is offline
 724			saveInDb = true;
 725			addToConversation = true;
 726
 727		}
 728		if (saveInDb) {
 729			databaseBackend.createMessage(message);
 730		}
 731		if (addToConversation) {
 732			conv.getMessages().add(message);
 733			if (convChangedListener != null) {
 734				convChangedListener.onConversationListChanged();
 735			}
 736		}
 737		if ((send)&&(packet!=null)) {
 738			account.getXmppConnection().sendMessagePacket(packet);
 739		}
 740
 741	}
 742
 743	private void sendUnsendMessages(Conversation conversation) {
 744		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 745			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 746				Message message = conversation.getMessages().get(i);
 747				MessagePacket packet = prepareMessagePacket(
 748						conversation.getAccount(), message, null);
 749				conversation.getAccount().getXmppConnection()
 750						.sendMessagePacket(packet);
 751				message.setStatus(Message.STATUS_SEND);
 752				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 753					databaseBackend.updateMessage(message);
 754				} else {
 755					databaseBackend.deleteMessage(message);
 756					conversation.getMessages().remove(i);
 757					i--;
 758				}
 759			}
 760		}
 761	}
 762
 763	public MessagePacket prepareMessagePacket(Account account, Message message,
 764			Session otrSession) {
 765		MessagePacket packet = new MessagePacket();
 766		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 767			packet.setType(MessagePacket.TYPE_CHAT);
 768			if (otrSession != null) {
 769				try {
 770					packet.setBody(otrSession.transformSending(message
 771							.getBody()));
 772				} catch (OtrException e) {
 773					Log.d(LOGTAG,
 774							account.getJid()
 775									+ ": could not encrypt message to "
 776									+ message.getCounterpart());
 777				}
 778				packet.addChild("private","urn:xmpp:carbons:2");
 779				packet.addChild("no-copy","urn:xmpp:hints");
 780				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 781						+ otrSession.getSessionID().getUserID());
 782				packet.setFrom(account.getFullJid());
 783			} else {
 784				packet.setBody(message.getBody());
 785				packet.setTo(message.getCounterpart());
 786				packet.setFrom(account.getJid());
 787			}
 788		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 789			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 790			packet.setBody(message.getBody());
 791			packet.setTo(message.getCounterpart().split("/")[0]);
 792			packet.setFrom(account.getJid());
 793		}
 794		packet.setId(message.getUuid());
 795		return packet;
 796	}
 797
 798	private void getRoster(Account account,
 799			final OnRosterFetchedListener listener) {
 800		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 801		for (int i = 0; i < contacts.size(); ++i) {
 802			contacts.get(i).setAccount(account);
 803		}
 804		if (listener != null) {
 805			listener.onRosterFetched(contacts);
 806		}
 807	}
 808
 809	public List<Contact> getRoster(Account account) {
 810		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 811		for (int i = 0; i < contacts.size(); ++i) {
 812			contacts.get(i).setAccount(account);
 813		}
 814		return contacts;
 815	}
 816
 817	public void updateRoster(final Account account,
 818			final OnRosterFetchedListener listener) {
 819		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 820		if (!"".equals(account.getRosterVersion())) {
 821			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 822					+ account.getRosterVersion());
 823		} else {
 824			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 825		}
 826		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 827		account.getXmppConnection().sendIqPacket(iqPacket,
 828				new OnIqPacketReceived() {
 829
 830					@Override
 831					public void onIqPacketReceived(final Account account,
 832							IqPacket packet) {
 833						Element roster = packet.findChild("query");
 834						if (roster != null) {
 835							Log.d(LOGTAG, account.getJid()
 836									+ ": processing roster");
 837							processRosterItems(account, roster);
 838							StringBuilder mWhere = new StringBuilder();
 839							mWhere.append("jid NOT IN(");
 840							List<Element> items = roster.getChildren();
 841							for (int i = 0; i < items.size(); ++i) {
 842								mWhere.append(DatabaseUtils
 843										.sqlEscapeString(items.get(i)
 844												.getAttribute("jid")));
 845								if (i != items.size() - 1) {
 846									mWhere.append(",");
 847								}
 848							}
 849							mWhere.append(") and accountUuid = \"");
 850							mWhere.append(account.getUuid());
 851							mWhere.append("\"");
 852							List<Contact> contactsToDelete = databaseBackend
 853									.getContacts(mWhere.toString());
 854							for (Contact contact : contactsToDelete) {
 855								databaseBackend.deleteContact(contact);
 856								replaceContactInConversation(contact.getJid(),
 857										null);
 858							}
 859
 860						} else {
 861							Log.d(LOGTAG, account.getJid()
 862									+ ": empty roster returend");
 863						}
 864						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 865
 866							@Override
 867							public void phoneContactsMerged() {
 868								if (listener != null) {
 869									getRoster(account, listener);
 870								}
 871							}
 872						});
 873					}
 874				});
 875	}
 876
 877	public void mergePhoneContactsWithRoster(
 878			final OnPhoneContactsMerged listener) {
 879		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 880				new OnPhoneContactsLoadedListener() {
 881					@Override
 882					public void onPhoneContactsLoaded(
 883							Hashtable<String, Bundle> phoneContacts) {
 884						List<Contact> contacts = databaseBackend
 885								.getContactsByAccount(null);
 886						for (int i = 0; i < contacts.size(); ++i) {
 887							Contact contact = contacts.get(i);
 888							if (phoneContacts.containsKey(contact.getJid())) {
 889								Bundle phoneContact = phoneContacts.get(contact
 890										.getJid());
 891								String systemAccount = phoneContact
 892										.getInt("phoneid")
 893										+ "#"
 894										+ phoneContact.getString("lookup");
 895								contact.setSystemAccount(systemAccount);
 896								contact.setPhotoUri(phoneContact
 897										.getString("photouri"));
 898								contact.setDisplayName(phoneContact
 899										.getString("displayname"));
 900								databaseBackend.updateContact(contact);
 901								replaceContactInConversation(contact.getJid(),
 902										contact);
 903							} else {
 904								if ((contact.getSystemAccount() != null)
 905										|| (contact.getProfilePhoto() != null)) {
 906									contact.setSystemAccount(null);
 907									contact.setPhotoUri(null);
 908									databaseBackend.updateContact(contact);
 909									replaceContactInConversation(
 910											contact.getJid(), contact);
 911								}
 912							}
 913						}
 914						if (listener != null) {
 915							listener.phoneContactsMerged();
 916						}
 917					}
 918				});
 919	}
 920
 921	public List<Conversation> getConversations() {
 922		if (this.conversations == null) {
 923			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 924			for (Account account : this.accounts) {
 925				accountLookupTable.put(account.getUuid(), account);
 926			}
 927			this.conversations = databaseBackend
 928					.getConversations(Conversation.STATUS_AVAILABLE);
 929			for (Conversation conv : this.conversations) {
 930				Account account = accountLookupTable.get(conv.getAccountUuid());
 931				conv.setAccount(account);
 932				conv.setContact(findContact(account, conv.getContactJid()));
 933				conv.setMessages(databaseBackend.getMessages(conv, 50));
 934			}
 935		}
 936		Collections.sort(this.conversations, new Comparator<Conversation>() {
 937			@Override
 938			public int compare(Conversation lhs, Conversation rhs) {
 939				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 940						.getLatestMessage().getTimeSent());
 941			}
 942		});
 943		return this.conversations;
 944	}
 945
 946	public List<Account> getAccounts() {
 947		return this.accounts;
 948	}
 949
 950	public Contact findContact(Account account, String jid) {
 951		Contact contact = databaseBackend.findContact(account, jid);
 952		if (contact != null) {
 953			contact.setAccount(account);
 954		}
 955		return contact;
 956	}
 957
 958	public Conversation findOrCreateConversation(Account account, String jid,
 959			boolean muc) {
 960		for (Conversation conv : this.getConversations()) {
 961			if ((conv.getAccount().equals(account))
 962					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 963				return conv;
 964			}
 965		}
 966		Conversation conversation = databaseBackend.findConversation(account,
 967				jid);
 968		if (conversation != null) {
 969			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 970			conversation.setAccount(account);
 971			if (muc) {
 972				conversation.setMode(Conversation.MODE_MULTI);
 973			} else {
 974				conversation.setMode(Conversation.MODE_SINGLE);
 975			}
 976			conversation.setMessages(databaseBackend.getMessages(conversation,
 977					50));
 978			this.databaseBackend.updateConversation(conversation);
 979			conversation.setContact(findContact(account,
 980					conversation.getContactJid()));
 981		} else {
 982			String conversationName;
 983			Contact contact = findContact(account, jid);
 984			if (contact != null) {
 985				conversationName = contact.getDisplayName();
 986			} else {
 987				conversationName = jid.split("@")[0];
 988			}
 989			if (muc) {
 990				conversation = new Conversation(conversationName, account, jid,
 991						Conversation.MODE_MULTI);
 992			} else {
 993				conversation = new Conversation(conversationName, account, jid,
 994						Conversation.MODE_SINGLE);
 995			}
 996			conversation.setContact(contact);
 997			this.databaseBackend.createConversation(conversation);
 998		}
 999		this.conversations.add(conversation);
1000		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1001			joinMuc(conversation);
1002		}
1003		if (this.convChangedListener != null) {
1004			this.convChangedListener.onConversationListChanged();
1005		}
1006		return conversation;
1007	}
1008
1009	public void archiveConversation(Conversation conversation) {
1010		if (conversation.getMode() == Conversation.MODE_MULTI) {
1011			leaveMuc(conversation);
1012		} else {
1013			conversation.endOtrIfNeeded();
1014		}
1015		this.databaseBackend.updateConversation(conversation);
1016		this.conversations.remove(conversation);
1017		if (this.convChangedListener != null) {
1018			this.convChangedListener.onConversationListChanged();
1019		}
1020	}
1021
1022	public int getConversationCount() {
1023		return this.databaseBackend.getConversationCount();
1024	}
1025
1026	public void createAccount(Account account) {
1027		databaseBackend.createAccount(account);
1028		this.accounts.add(account);
1029		this.reconnectAccount(account, false);
1030		if (accountChangedListener != null)
1031			accountChangedListener.onAccountListChangedListener();
1032	}
1033
1034	public void deleteContact(Contact contact) {
1035		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1036		Element query = iq.query("jabber:iq:roster");
1037		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1038		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1039		replaceContactInConversation(contact.getJid(), null);
1040		databaseBackend.deleteContact(contact);
1041	}
1042
1043	public void updateAccount(Account account) {
1044		this.statusListener.onStatusChanged(account);
1045		databaseBackend.updateAccount(account);
1046		reconnectAccount(account, false);
1047		if (accountChangedListener != null)
1048			accountChangedListener.onAccountListChangedListener();
1049	}
1050
1051	public void deleteAccount(Account account) {
1052		if (account.getXmppConnection() != null) {
1053			this.disconnect(account, true);
1054		}
1055		databaseBackend.deleteAccount(account);
1056		this.accounts.remove(account);
1057		if (accountChangedListener != null)
1058			accountChangedListener.onAccountListChangedListener();
1059	}
1060
1061	public void setOnConversationListChangedListener(
1062			OnConversationListChangedListener listener) {
1063		this.convChangedListener = listener;
1064		this.convChangedListenerCount++;
1065		Log.d(LOGTAG,"registered on conv changed in backend ("+convChangedListenerCount+")");
1066	}
1067
1068	public void removeOnConversationListChangedListener() {
1069		this.convChangedListenerCount--;
1070		Log.d(LOGTAG,"someone on conv changed listener removed listener ("+convChangedListenerCount+")");
1071		if (this.convChangedListenerCount==0) {
1072			this.convChangedListener = null;
1073		}
1074	}
1075
1076	public void setOnAccountListChangedListener(
1077			OnAccountListChangedListener listener) {
1078		this.accountChangedListener = listener;
1079	}
1080
1081	public void removeOnAccountListChangedListener() {
1082		this.accountChangedListener = null;
1083	}
1084
1085	public void connectMultiModeConversations(Account account) {
1086		List<Conversation> conversations = getConversations();
1087		for (int i = 0; i < conversations.size(); i++) {
1088			Conversation conversation = conversations.get(i);
1089			if ((conversation.getMode() == Conversation.MODE_MULTI)
1090					&& (conversation.getAccount() == account)) {
1091				joinMuc(conversation);
1092			}
1093		}
1094	}
1095
1096	public void joinMuc(Conversation conversation) {
1097		String[] mucParts = conversation.getContactJid().split("/");
1098		String muc;
1099		String nick;
1100		if (mucParts.length == 2) {
1101			muc = mucParts[0];
1102			nick = mucParts[1];
1103		} else {
1104			muc = mucParts[0];
1105			nick = conversation.getAccount().getUsername();
1106		}
1107		PresencePacket packet = new PresencePacket();
1108		packet.setAttribute("to", muc + "/" + nick);
1109		Element x = new Element("x");
1110		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1111		if (conversation.getMessages().size() != 0) {
1112			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1113			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1114			x.addChild("history").setAttribute("seconds", diff + "");
1115		}
1116		packet.addChild(x);
1117		conversation.getAccount().getXmppConnection()
1118				.sendPresencePacket(packet);
1119	}
1120
1121	private OnRenameListener renameListener = null;
1122
1123	public void setOnRenameListener(OnRenameListener listener) {
1124		this.renameListener = listener;
1125	}
1126
1127	public void renameInMuc(final Conversation conversation, final String nick) {
1128		final MucOptions options = conversation.getMucOptions();
1129		if (options.online()) {
1130			options.setOnRenameListener(new OnRenameListener() {
1131
1132				@Override
1133				public void onRename(boolean success) {
1134					if (renameListener != null) {
1135						renameListener.onRename(success);
1136					}
1137					if (success) {
1138						databaseBackend.updateConversation(conversation);
1139					}
1140				}
1141			});
1142			options.flagAboutToRename();
1143			PresencePacket packet = new PresencePacket();
1144			packet.setAttribute("to",
1145					conversation.getContactJid().split("/")[0] + "/" + nick);
1146			packet.setAttribute("from", conversation.getAccount().getFullJid());
1147
1148			conversation.getAccount().getXmppConnection()
1149					.sendPresencePacket(packet, null);
1150		} else {
1151			String jid = conversation.getContactJid().split("/")[0] + "/"
1152					+ nick;
1153			conversation.setContactJid(jid);
1154			databaseBackend.updateConversation(conversation);
1155			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1156				joinMuc(conversation);
1157			}
1158		}
1159	}
1160
1161	public void leaveMuc(Conversation conversation) {
1162		PresencePacket packet = new PresencePacket();
1163		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1164		packet.setAttribute("from", conversation.getAccount().getFullJid());
1165		packet.setAttribute("type", "unavailable");
1166		Log.d(LOGTAG,"send leaving muc " + packet);
1167		conversation.getAccount().getXmppConnection()
1168				.sendPresencePacket(packet);
1169		conversation.getMucOptions().setOffline();
1170	}
1171
1172	public void disconnect(Account account, boolean force) {
1173		if ((account.getStatus() == Account.STATUS_ONLINE)
1174				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1175			if (!force) {
1176				List<Conversation> conversations = getConversations();
1177				for (int i = 0; i < conversations.size(); i++) {
1178					Conversation conversation = conversations.get(i);
1179					if (conversation.getAccount() == account) {
1180						if (conversation.getMode() == Conversation.MODE_MULTI) {
1181							leaveMuc(conversation);
1182						} else {
1183							conversation.endOtrIfNeeded();
1184						}
1185					}
1186				}
1187			}
1188			account.getXmppConnection().disconnect(force);
1189		}
1190	}
1191
1192	@Override
1193	public IBinder onBind(Intent intent) {
1194		return mBinder;
1195	}
1196
1197	public void updateContact(Contact contact) {
1198		databaseBackend.updateContact(contact);
1199		replaceContactInConversation(contact.getJid(), contact);
1200	}
1201
1202	public void updateMessage(Message message) {
1203		databaseBackend.updateMessage(message);
1204	}
1205
1206	public void createContact(Contact contact) {
1207		SharedPreferences sharedPref = PreferenceManager
1208				.getDefaultSharedPreferences(getApplicationContext());
1209		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1210		if (autoGrant) {
1211			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1212			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1213		}
1214		databaseBackend.createContact(contact);
1215		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1216		Element query = new Element("query");
1217		query.setAttribute("xmlns", "jabber:iq:roster");
1218		Element item = new Element("item");
1219		item.setAttribute("jid", contact.getJid());
1220		item.setAttribute("name", contact.getJid());
1221		query.addChild(item);
1222		iq.addChild(query);
1223		Account account = contact.getAccount();
1224		account.getXmppConnection().sendIqPacket(iq, null);
1225		if (autoGrant) {
1226			requestPresenceUpdatesFrom(contact);
1227		}
1228		replaceContactInConversation(contact.getJid(), contact);
1229	}
1230
1231	public void requestPresenceUpdatesFrom(Contact contact) {
1232		// Requesting a Subscription type=subscribe
1233		PresencePacket packet = new PresencePacket();
1234		packet.setAttribute("type", "subscribe");
1235		packet.setAttribute("to", contact.getJid());
1236		packet.setAttribute("from", contact.getAccount().getJid());
1237		Log.d(LOGTAG, packet.toString());
1238		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1239	}
1240
1241	public void stopPresenceUpdatesFrom(Contact contact) {
1242		// Unsubscribing type='unsubscribe'
1243		PresencePacket packet = new PresencePacket();
1244		packet.setAttribute("type", "unsubscribe");
1245		packet.setAttribute("to", contact.getJid());
1246		packet.setAttribute("from", contact.getAccount().getJid());
1247		Log.d(LOGTAG, packet.toString());
1248		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1249	}
1250
1251	public void stopPresenceUpdatesTo(Contact contact) {
1252		// Canceling a Subscription type=unsubscribed
1253		PresencePacket packet = new PresencePacket();
1254		packet.setAttribute("type", "unsubscribed");
1255		packet.setAttribute("to", contact.getJid());
1256		packet.setAttribute("from", contact.getAccount().getJid());
1257		Log.d(LOGTAG, packet.toString());
1258		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1259	}
1260
1261	public void sendPresenceUpdatesTo(Contact contact) {
1262		// type='subscribed'
1263		PresencePacket packet = new PresencePacket();
1264		packet.setAttribute("type", "subscribed");
1265		packet.setAttribute("to", contact.getJid());
1266		packet.setAttribute("from", contact.getAccount().getJid());
1267		Log.d(LOGTAG, packet.toString());
1268		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1269	}
1270
1271	public void sendPgpPresence(Account account, String signature) {
1272		PresencePacket packet = new PresencePacket();
1273		packet.setAttribute("from", account.getFullJid());
1274		Element status = new Element("status");
1275		status.setContent("online");
1276		packet.addChild(status);
1277		Element x = new Element("x");
1278		x.setAttribute("xmlns", "jabber:x:signed");
1279		x.setContent(signature);
1280		packet.addChild(x);
1281		account.getXmppConnection().sendPresencePacket(packet);
1282	}
1283
1284	public void generatePgpAnnouncement(Account account)
1285			throws PgpEngine.UserInputRequiredException {
1286		if (account.getStatus() == Account.STATUS_ONLINE) {
1287			String signature = getPgpEngine().generateSignature("online");
1288			account.setKey("pgp_signature", signature);
1289			databaseBackend.updateAccount(account);
1290			sendPgpPresence(account, signature);
1291		}
1292	}
1293
1294	public void updateConversation(Conversation conversation) {
1295		this.databaseBackend.updateConversation(conversation);
1296	}
1297
1298	public Contact findContact(String uuid) {
1299		Contact contact = this.databaseBackend.getContact(uuid);
1300		if (contact!=null) {
1301			for (Account account : getAccounts()) {
1302				if (contact.getAccountUuid().equals(account.getUuid())) {
1303					contact.setAccount(account);
1304				}
1305			}
1306		}
1307		return contact;
1308	}
1309
1310	public void removeOnTLSExceptionReceivedListener() {
1311		this.tlsException = null;
1312	}
1313
1314	// TODO dont let thread sleep but schedule wake up
1315	public void reconnectAccount(final Account account, final boolean force) {
1316		new Thread(new Runnable() {
1317
1318			@Override
1319			public void run() {
1320				if (account.getXmppConnection() != null) {
1321					disconnect(account, force);
1322				}
1323				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1324					if (account.getXmppConnection() == null) {
1325						account.setXmppConnection(createConnection(account));
1326					}
1327					Thread thread = new Thread(account.getXmppConnection());
1328					thread.start();
1329					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1330				}
1331			}
1332		}).start();
1333	}
1334
1335	public void updateConversationInGui() {
1336		if (convChangedListener != null) {
1337			convChangedListener.onConversationListChanged();
1338		}
1339	}
1340
1341	public void sendConversationSubject(Conversation conversation,
1342			String subject) {
1343		MessagePacket packet = new MessagePacket();
1344		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1345		packet.setTo(conversation.getContactJid().split("/")[0]);
1346		Element subjectChild = new Element("subject");
1347		subjectChild.setContent(subject);
1348		packet.addChild(subjectChild);
1349		packet.setFrom(conversation.getAccount().getJid());
1350		Account account = conversation.getAccount();
1351		if (account.getStatus() == Account.STATUS_ONLINE) {
1352			account.getXmppConnection().sendMessagePacket(packet);
1353		}
1354	}
1355
1356	public void inviteToConference(Conversation conversation,
1357			List<Contact> contacts) {
1358		for (Contact contact : contacts) {
1359			MessagePacket packet = new MessagePacket();
1360			packet.setTo(conversation.getContactJid().split("/")[0]);
1361			packet.setFrom(conversation.getAccount().getFullJid());
1362			Element x = new Element("x");
1363			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1364			Element invite = new Element("invite");
1365			invite.setAttribute("to", contact.getJid());
1366			x.addChild(invite);
1367			packet.addChild(x);
1368			Log.d(LOGTAG, packet.toString());
1369			conversation.getAccount().getXmppConnection()
1370					.sendMessagePacket(packet);
1371		}
1372
1373	}
1374	
1375	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1376		boolean marked = false;
1377		for(Conversation conversation : getConversations()) {
1378			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1379				for(Message message : conversation.getMessages()) {
1380					if (message.getUuid().equals(uuid)) {
1381						markMessage(message, status);
1382						marked = true;
1383						break;
1384					}
1385				}
1386				break;
1387			}
1388		}
1389		return marked;
1390	}
1391	
1392	public void markMessage(Message message, int status) {
1393		message.setStatus(status);
1394		databaseBackend.updateMessage(message);
1395		if (convChangedListener!=null) {
1396			convChangedListener.onConversationListChanged();
1397		}
1398	}
1399}