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						// most likely roster not synced
 292						return;
 293					}
 294					if (type == null) {
 295						if (fromParts.length == 2) {
 296							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 297							PgpEngine pgp = getPgpEngine();
 298							if (pgp != null) {
 299								Element x = packet.findChild("x","jabber:x:signed");
 300								if (x != null) {
 301									try {
 302										Element status = packet.findChild("status");
 303										String msg;
 304										if (status!=null) {
 305											msg = status.getContent();
 306										} else {
 307											msg = "";
 308										}
 309										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 310														.getContent()));
 311									} catch (OpenPgpException e) {
 312										Log.d(LOGTAG, "faulty pgp. just ignore");
 313									}
 314								}
 315							}
 316							databaseBackend.updateContact(contact);
 317						} else {
 318							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 319						}
 320					} else if (type.equals("unavailable")) {
 321						if (fromParts.length != 2) {
 322							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 323						} else {
 324							contact.removePresence(fromParts[1]);
 325							databaseBackend.updateContact(contact);
 326						}
 327					} else if (type.equals("subscribe")) {
 328						if (contact
 329								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 330							sendPresenceUpdatesTo(contact);
 331							contact.setSubscriptionOption(Contact.Subscription.FROM);
 332							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 333							replaceContactInConversation(contact.getJid(),
 334									contact);
 335							databaseBackend.updateContact(contact);
 336							if ((contact
 337									.getSubscriptionOption(Contact.Subscription.ASKING))
 338									&& (!contact
 339											.getSubscriptionOption(Contact.Subscription.TO))) {
 340								requestPresenceUpdatesFrom(contact);
 341							}
 342						} else {
 343							// TODO: ask user to handle it maybe
 344						}
 345					} else {
 346						//Log.d(LOGTAG, packet.toString());
 347					}
 348					replaceContactInConversation(contact.getJid(), contact);
 349				}
 350			}
 351		}
 352	};
 353
 354	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 355
 356		@Override
 357		public void onIqPacketReceived(Account account, IqPacket packet) {
 358			if (packet.hasChild("query")) {
 359				Element query = packet.findChild("query");
 360				String xmlns = query.getAttribute("xmlns");
 361				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 362					processRosterItems(account, query);
 363					mergePhoneContactsWithRoster(null);
 364				}
 365			} else {
 366				Log.d(LOGTAG,"iq packet arrived "+packet.toString());
 367			}
 368		}
 369	};
 370	
 371	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 372		
 373		@Override
 374		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 375			mJingleConnectionManager.deliverPacket(account, packet);
 376		}
 377	};
 378
 379	private OpenPgpServiceConnection pgpServiceConnection;
 380	private PgpEngine mPgpEngine = null;
 381	private Intent pingIntent;
 382	private PendingIntent pendingPingIntent = null;
 383	private WakeLock wakeLock;
 384	private PowerManager pm;
 385
 386	public PgpEngine getPgpEngine() {
 387		if (pgpServiceConnection.isBound()) {
 388			if (this.mPgpEngine == null) {
 389				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 390						getApplicationContext(),
 391						pgpServiceConnection.getService()));
 392			}
 393			return mPgpEngine;
 394		} else {
 395			return null;
 396		}
 397
 398	}
 399
 400	public FileBackend getFileBackend() {
 401		return this.fileBackend;
 402	}
 403	
 404	public void attachImageToConversation(final Conversation conversation, final String presence, final Uri uri) {
 405		new Thread(new Runnable() {
 406			
 407			@Override
 408			public void run() {
 409				Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 410				message.setPresence(presence);
 411				message.setType(Message.TYPE_IMAGE);
 412				message.setStatus(Message.STATUS_PREPARING);
 413				conversation.getMessages().add(message);
 414				if (convChangedListener!=null) {
 415					convChangedListener.onConversationListChanged();
 416				}
 417				getFileBackend().copyImageToPrivateStorage(message, uri);
 418				message.setStatus(Message.STATUS_UNSEND);
 419				databaseBackend.createMessage(message);
 420				if (convChangedListener!=null) {
 421					convChangedListener.onConversationListChanged();
 422				}
 423				sendMessage(message, null);
 424			}
 425		}).start();
 426	}
 427	
 428	
 429	protected Conversation findMuc(String name, Account account) {
 430		for (Conversation conversation : this.conversations) {
 431			if (conversation.getContactJid().split("/")[0].equals(name)
 432					&& (conversation.getAccount() == account)) {
 433				return conversation;
 434			}
 435		}
 436		return null;
 437	}
 438
 439	private void processRosterItems(Account account, Element elements) {
 440		String version = elements.getAttribute("ver");
 441		if (version != null) {
 442			account.setRosterVersion(version);
 443			databaseBackend.updateAccount(account);
 444		}
 445		for (Element item : elements.getChildren()) {
 446			if (item.getName().equals("item")) {
 447				String jid = item.getAttribute("jid");
 448				String subscription = item.getAttribute("subscription");
 449				Contact contact = databaseBackend.findContact(account, jid);
 450				if (contact == null) {
 451					if (!subscription.equals("remove")) {
 452						String name = item.getAttribute("name");
 453						if (name == null) {
 454							name = jid.split("@")[0];
 455						}
 456						contact = new Contact(account, name, jid, null);
 457						contact.parseSubscriptionFromElement(item);
 458						databaseBackend.createContact(contact);
 459					}
 460				} else {
 461					if (subscription.equals("remove")) {
 462						databaseBackend.deleteContact(contact);
 463						replaceContactInConversation(contact.getJid(), null);
 464					} else {
 465						contact.parseSubscriptionFromElement(item);
 466						databaseBackend.updateContact(contact);
 467						replaceContactInConversation(contact.getJid(), contact);
 468					}
 469				}
 470			}
 471		}
 472	}
 473
 474	private void replaceContactInConversation(String jid, Contact contact) {
 475		List<Conversation> conversations = getConversations();
 476		for (int i = 0; i < conversations.size(); ++i) {
 477			if ((conversations.get(i).getContactJid().equals(jid))) {
 478				conversations.get(i).setContact(contact);
 479				break;
 480			}
 481		}
 482	}
 483
 484	public class XmppConnectionBinder extends Binder {
 485		public XmppConnectionService getService() {
 486			return XmppConnectionService.this;
 487		}
 488	}
 489
 490	@Override
 491	public int onStartCommand(Intent intent, int flags, int startId) {
 492		this.wakeLock.acquire();
 493		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 494		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 495				.getSystemService(Context.CONNECTIVITY_SERVICE);
 496		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 497		boolean isConnected = activeNetwork != null
 498				&& activeNetwork.isConnected();
 499
 500		for (Account account : accounts) {
 501			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 502				if (!isConnected) {
 503					account.setStatus(Account.STATUS_NO_INTERNET);
 504					if (statusListener != null) {
 505						statusListener.onStatusChanged(account);
 506					}
 507				} else {
 508					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 509						account.setStatus(Account.STATUS_OFFLINE);
 510						if (statusListener != null) {
 511							statusListener.onStatusChanged(account);
 512						}
 513					}
 514
 515					// TODO 3 remaining cases
 516					if (account.getStatus() == Account.STATUS_ONLINE) {
 517						long lastReceived = account.getXmppConnection().lastPaketReceived;
 518						long lastSent = account.getXmppConnection().lastPingSent;
 519						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 520							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 521							this.reconnectAccount(account, true);
 522						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 523							account.getXmppConnection().sendPing();
 524							account.getXmppConnection().lastPingSent = SystemClock
 525									.elapsedRealtime();
 526							this.scheduleWakeupCall(2, false);
 527						}
 528					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 529						if (account.getXmppConnection() == null) {
 530							account.setXmppConnection(this
 531									.createConnection(account));
 532						}
 533						account.getXmppConnection().lastPingSent = SystemClock
 534								.elapsedRealtime();
 535						new Thread(account.getXmppConnection()).start();
 536					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 537							&& ((SystemClock.elapsedRealtime() - account
 538									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 539						Log.d(LOGTAG, account.getJid()
 540								+ ": time out during connect reconnecting");
 541						reconnectAccount(account, true);
 542					} else {
 543						Log.d(LOGTAG,
 544								"seconds since last connect:"
 545										+ ((SystemClock.elapsedRealtime() - account
 546												.getXmppConnection().lastConnect) / 1000));
 547						Log.d(LOGTAG,
 548								account.getJid() + ": status="
 549										+ account.getStatus());
 550						// TODO notify user of ssl cert problem or auth problem
 551						// or what ever
 552					}
 553					// in any case. reschedule wakup call
 554					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 555				}
 556				if (accountChangedListener != null) {
 557					accountChangedListener.onAccountListChangedListener();
 558				}
 559			}
 560		}
 561		if (wakeLock.isHeld()) {
 562			wakeLock.release();
 563		}
 564		return START_STICKY;
 565	}
 566
 567	@Override
 568	public void onCreate() {
 569		ExceptionHelper.init(getApplicationContext());
 570		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 571		this.fileBackend = new FileBackend(getApplicationContext());
 572		this.accounts = databaseBackend.getAccounts();
 573
 574		this.getConversations();
 575		
 576		getContentResolver().registerContentObserver(
 577				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 578		this.pgpServiceConnection = new OpenPgpServiceConnection(
 579				getApplicationContext(), "org.sufficientlysecure.keychain");
 580		this.pgpServiceConnection.bindToService();
 581
 582		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 583		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 584				"XmppConnectionService");
 585	}
 586
 587	@Override
 588	public void onDestroy() {
 589		super.onDestroy();
 590		for (Account account : accounts) {
 591			if (account.getXmppConnection() != null) {
 592				disconnect(account, true);
 593			}
 594		}
 595	}
 596
 597	protected void scheduleWakeupCall(int seconds, boolean ping) {
 598		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 599		Context context = getApplicationContext();
 600		AlarmManager alarmManager = (AlarmManager) context
 601				.getSystemService(Context.ALARM_SERVICE);
 602
 603		if (ping) {
 604			if (this.pingIntent == null) {
 605				this.pingIntent = new Intent(context, EventReceiver.class);
 606				this.pingIntent.setAction("ping");
 607				this.pingIntent.putExtra("time", timeToWake);
 608				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 609						this.pingIntent, 0);
 610				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 611						timeToWake, pendingPingIntent);
 612				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 613			} else {
 614				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 615				if (scheduledTime < SystemClock.elapsedRealtime()
 616						|| (scheduledTime > timeToWake)) {
 617					this.pingIntent.putExtra("time", timeToWake);
 618					alarmManager.cancel(this.pendingPingIntent);
 619					this.pendingPingIntent = PendingIntent.getBroadcast(
 620							context, 0, this.pingIntent, 0);
 621					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 622							timeToWake, pendingPingIntent);
 623					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 624				}
 625			}
 626		} else {
 627			Intent intent = new Intent(context, EventReceiver.class);
 628			intent.setAction("ping_check");
 629			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 630					intent, 0);
 631			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 632					alarmIntent);
 633		}
 634
 635	}
 636
 637	public XmppConnection createConnection(Account account) {
 638		SharedPreferences sharedPref = getPreferences();
 639		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 640		XmppConnection connection = new XmppConnection(account, this.pm);
 641		connection.setOnMessagePacketReceivedListener(this.messageListener);
 642		connection.setOnStatusChangedListener(this.statusListener);
 643		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 644		connection
 645				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 646		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 647		connection
 648				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 649
 650					@Override
 651					public void onTLSExceptionReceived(String fingerprint,
 652							Account account) {
 653						Log.d(LOGTAG, "tls exception arrived in service");
 654						if (tlsException != null) {
 655							tlsException.onTLSExceptionReceived(fingerprint,
 656									account);
 657						}
 658					}
 659				});
 660		connection.setOnBindListener(new OnBindListener() {
 661
 662			@Override
 663			public void onBind(Account account) {
 664				databaseBackend.clearPresences(account);
 665				account.clearPresences(); // self presences
 666				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 667					updateRoster(account, null);
 668				}
 669				connectMultiModeConversations(account);
 670				if (convChangedListener != null) {
 671					convChangedListener.onConversationListChanged();
 672				}
 673			}
 674		});
 675		return connection;
 676	}
 677
 678	synchronized public void sendMessage(Message message, String presence) {
 679		Account account = message.getConversation().getAccount();
 680		Conversation conv = message.getConversation();
 681		MessagePacket packet = null;
 682		boolean saveInDb = false;
 683		boolean addToConversation = false;
 684		boolean send = false;
 685		if (account.getStatus() == Account.STATUS_ONLINE) {
 686			if (message.getType() == Message.TYPE_IMAGE) {
 687				mJingleConnectionManager.createNewConnection(message);
 688			} else {
 689				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 690					if (!conv.hasValidOtrSession()) {
 691						// starting otr session. messages will be send later
 692						conv.startOtrSession(getApplicationContext(), presence,true);
 693					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 694						// otr session aleary exists, creating message packet
 695						// accordingly
 696						packet = prepareMessagePacket(account, message,
 697								conv.getOtrSession());
 698						send = true;
 699						message.setStatus(Message.STATUS_SEND);
 700					}
 701					saveInDb = true;
 702					addToConversation = true;
 703				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 704					message.getConversation().endOtrIfNeeded();
 705					long keyId = message.getConversation().getContact()
 706							.getPgpKeyId();
 707					packet = new MessagePacket();
 708					packet.setType(MessagePacket.TYPE_CHAT);
 709					packet.setFrom(message.getConversation().getAccount()
 710							.getFullJid());
 711					packet.setTo(message.getCounterpart());
 712					packet.setBody("This is an XEP-0027 encryted message");
 713					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 714					message.setStatus(Message.STATUS_SEND);
 715					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 716					saveInDb = true;
 717					addToConversation = true;
 718					send = true;
 719				} else {
 720					message.getConversation().endOtrIfNeeded();
 721					// don't encrypt
 722					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 723						message.setStatus(Message.STATUS_SEND);
 724						saveInDb = true;
 725						addToConversation = true;
 726					}
 727					packet = prepareMessagePacket(account, message, null);
 728					send = true;
 729				}
 730			}
 731		} else {
 732			// account is offline
 733			saveInDb = true;
 734			addToConversation = true;
 735
 736		}
 737		if (saveInDb) {
 738			databaseBackend.createMessage(message);
 739		}
 740		if (addToConversation) {
 741			conv.getMessages().add(message);
 742			if (convChangedListener != null) {
 743				convChangedListener.onConversationListChanged();
 744			}
 745		}
 746		if ((send)&&(packet!=null)) {
 747			account.getXmppConnection().sendMessagePacket(packet);
 748		}
 749
 750	}
 751
 752	private void sendUnsendMessages(Conversation conversation) {
 753		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 754			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 755				Message message = conversation.getMessages().get(i);
 756				MessagePacket packet = prepareMessagePacket(
 757						conversation.getAccount(), message, null);
 758				conversation.getAccount().getXmppConnection()
 759						.sendMessagePacket(packet);
 760				message.setStatus(Message.STATUS_SEND);
 761				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 762					databaseBackend.updateMessage(message);
 763				} else {
 764					databaseBackend.deleteMessage(message);
 765					conversation.getMessages().remove(i);
 766					i--;
 767				}
 768			}
 769		}
 770	}
 771
 772	public MessagePacket prepareMessagePacket(Account account, Message message,
 773			Session otrSession) {
 774		MessagePacket packet = new MessagePacket();
 775		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 776			packet.setType(MessagePacket.TYPE_CHAT);
 777			if (otrSession != null) {
 778				try {
 779					packet.setBody(otrSession.transformSending(message
 780							.getBody()));
 781				} catch (OtrException e) {
 782					Log.d(LOGTAG,
 783							account.getJid()
 784									+ ": could not encrypt message to "
 785									+ message.getCounterpart());
 786				}
 787				packet.addChild("private","urn:xmpp:carbons:2");
 788				packet.addChild("no-copy","urn:xmpp:hints");
 789				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 790						+ otrSession.getSessionID().getUserID());
 791				packet.setFrom(account.getFullJid());
 792			} else {
 793				packet.setBody(message.getBody());
 794				packet.setTo(message.getCounterpart());
 795				packet.setFrom(account.getJid());
 796			}
 797		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 798			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 799			packet.setBody(message.getBody());
 800			packet.setTo(message.getCounterpart().split("/")[0]);
 801			packet.setFrom(account.getJid());
 802		}
 803		packet.setId(message.getUuid());
 804		return packet;
 805	}
 806
 807	private void getRoster(Account account,
 808			final OnRosterFetchedListener listener) {
 809		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 810		for (int i = 0; i < contacts.size(); ++i) {
 811			contacts.get(i).setAccount(account);
 812		}
 813		if (listener != null) {
 814			listener.onRosterFetched(contacts);
 815		}
 816	}
 817
 818	public List<Contact> getRoster(Account account) {
 819		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 820		for (int i = 0; i < contacts.size(); ++i) {
 821			contacts.get(i).setAccount(account);
 822		}
 823		return contacts;
 824	}
 825
 826	public void updateRoster(final Account account,
 827			final OnRosterFetchedListener listener) {
 828		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 829		if (!"".equals(account.getRosterVersion())) {
 830			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 831					+ account.getRosterVersion());
 832		} else {
 833			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 834		}
 835		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 836		account.getXmppConnection().sendIqPacket(iqPacket,
 837				new OnIqPacketReceived() {
 838
 839					@Override
 840					public void onIqPacketReceived(final Account account,
 841							IqPacket packet) {
 842						Element roster = packet.findChild("query");
 843						if (roster != null) {
 844							Log.d(LOGTAG, account.getJid()
 845									+ ": processing roster");
 846							processRosterItems(account, roster);
 847							StringBuilder mWhere = new StringBuilder();
 848							mWhere.append("jid NOT IN(");
 849							List<Element> items = roster.getChildren();
 850							for (int i = 0; i < items.size(); ++i) {
 851								mWhere.append(DatabaseUtils
 852										.sqlEscapeString(items.get(i)
 853												.getAttribute("jid")));
 854								if (i != items.size() - 1) {
 855									mWhere.append(",");
 856								}
 857							}
 858							mWhere.append(") and accountUuid = \"");
 859							mWhere.append(account.getUuid());
 860							mWhere.append("\"");
 861							List<Contact> contactsToDelete = databaseBackend
 862									.getContacts(mWhere.toString());
 863							for (Contact contact : contactsToDelete) {
 864								databaseBackend.deleteContact(contact);
 865								replaceContactInConversation(contact.getJid(),
 866										null);
 867							}
 868
 869						} else {
 870							Log.d(LOGTAG, account.getJid()
 871									+ ": empty roster returend");
 872						}
 873						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 874
 875							@Override
 876							public void phoneContactsMerged() {
 877								if (listener != null) {
 878									getRoster(account, listener);
 879								}
 880							}
 881						});
 882					}
 883				});
 884	}
 885
 886	public void mergePhoneContactsWithRoster(
 887			final OnPhoneContactsMerged listener) {
 888		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 889				new OnPhoneContactsLoadedListener() {
 890					@Override
 891					public void onPhoneContactsLoaded(
 892							Hashtable<String, Bundle> phoneContacts) {
 893						List<Contact> contacts = databaseBackend
 894								.getContactsByAccount(null);
 895						for (int i = 0; i < contacts.size(); ++i) {
 896							Contact contact = contacts.get(i);
 897							if (phoneContacts.containsKey(contact.getJid())) {
 898								Bundle phoneContact = phoneContacts.get(contact
 899										.getJid());
 900								String systemAccount = phoneContact
 901										.getInt("phoneid")
 902										+ "#"
 903										+ phoneContact.getString("lookup");
 904								contact.setSystemAccount(systemAccount);
 905								contact.setPhotoUri(phoneContact
 906										.getString("photouri"));
 907								contact.setDisplayName(phoneContact
 908										.getString("displayname"));
 909								databaseBackend.updateContact(contact);
 910								replaceContactInConversation(contact.getJid(),
 911										contact);
 912							} else {
 913								if ((contact.getSystemAccount() != null)
 914										|| (contact.getProfilePhoto() != null)) {
 915									contact.setSystemAccount(null);
 916									contact.setPhotoUri(null);
 917									databaseBackend.updateContact(contact);
 918									replaceContactInConversation(
 919											contact.getJid(), contact);
 920								}
 921							}
 922						}
 923						if (listener != null) {
 924							listener.phoneContactsMerged();
 925						}
 926					}
 927				});
 928	}
 929
 930	public List<Conversation> getConversations() {
 931		if (this.conversations == null) {
 932			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 933			for (Account account : this.accounts) {
 934				accountLookupTable.put(account.getUuid(), account);
 935			}
 936			this.conversations = databaseBackend
 937					.getConversations(Conversation.STATUS_AVAILABLE);
 938			for (Conversation conv : this.conversations) {
 939				Account account = accountLookupTable.get(conv.getAccountUuid());
 940				conv.setAccount(account);
 941				conv.setContact(findContact(account, conv.getContactJid()));
 942				conv.setMessages(databaseBackend.getMessages(conv, 50));
 943			}
 944		}
 945		Collections.sort(this.conversations, new Comparator<Conversation>() {
 946			@Override
 947			public int compare(Conversation lhs, Conversation rhs) {
 948				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 949						.getLatestMessage().getTimeSent());
 950			}
 951		});
 952		return this.conversations;
 953	}
 954
 955	public List<Account> getAccounts() {
 956		return this.accounts;
 957	}
 958
 959	public Contact findContact(Account account, String jid) {
 960		Contact contact = databaseBackend.findContact(account, jid);
 961		if (contact != null) {
 962			contact.setAccount(account);
 963		}
 964		return contact;
 965	}
 966
 967	public Conversation findOrCreateConversation(Account account, String jid,
 968			boolean muc) {
 969		for (Conversation conv : this.getConversations()) {
 970			if ((conv.getAccount().equals(account))
 971					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 972				return conv;
 973			}
 974		}
 975		Conversation conversation = databaseBackend.findConversation(account,
 976				jid);
 977		if (conversation != null) {
 978			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 979			conversation.setAccount(account);
 980			if (muc) {
 981				conversation.setMode(Conversation.MODE_MULTI);
 982			} else {
 983				conversation.setMode(Conversation.MODE_SINGLE);
 984			}
 985			conversation.setMessages(databaseBackend.getMessages(conversation,
 986					50));
 987			this.databaseBackend.updateConversation(conversation);
 988			conversation.setContact(findContact(account,
 989					conversation.getContactJid()));
 990		} else {
 991			String conversationName;
 992			Contact contact = findContact(account, jid);
 993			if (contact != null) {
 994				conversationName = contact.getDisplayName();
 995			} else {
 996				conversationName = jid.split("@")[0];
 997			}
 998			if (muc) {
 999				conversation = new Conversation(conversationName, account, jid,
1000						Conversation.MODE_MULTI);
1001			} else {
1002				conversation = new Conversation(conversationName, account, jid,
1003						Conversation.MODE_SINGLE);
1004			}
1005			conversation.setContact(contact);
1006			this.databaseBackend.createConversation(conversation);
1007		}
1008		this.conversations.add(conversation);
1009		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1010			joinMuc(conversation);
1011		}
1012		if (this.convChangedListener != null) {
1013			this.convChangedListener.onConversationListChanged();
1014		}
1015		return conversation;
1016	}
1017
1018	public void archiveConversation(Conversation conversation) {
1019		if (conversation.getMode() == Conversation.MODE_MULTI) {
1020			leaveMuc(conversation);
1021		} else {
1022			conversation.endOtrIfNeeded();
1023		}
1024		this.databaseBackend.updateConversation(conversation);
1025		this.conversations.remove(conversation);
1026		if (this.convChangedListener != null) {
1027			this.convChangedListener.onConversationListChanged();
1028		}
1029	}
1030
1031	public int getConversationCount() {
1032		return this.databaseBackend.getConversationCount();
1033	}
1034
1035	public void createAccount(Account account) {
1036		databaseBackend.createAccount(account);
1037		this.accounts.add(account);
1038		this.reconnectAccount(account, false);
1039		if (accountChangedListener != null)
1040			accountChangedListener.onAccountListChangedListener();
1041	}
1042
1043	public void deleteContact(Contact contact) {
1044		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1045		Element query = iq.query("jabber:iq:roster");
1046		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1047		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1048		replaceContactInConversation(contact.getJid(), null);
1049		databaseBackend.deleteContact(contact);
1050	}
1051
1052	public void updateAccount(Account account) {
1053		this.statusListener.onStatusChanged(account);
1054		databaseBackend.updateAccount(account);
1055		reconnectAccount(account, false);
1056		if (accountChangedListener != null)
1057			accountChangedListener.onAccountListChangedListener();
1058	}
1059
1060	public void deleteAccount(Account account) {
1061		if (account.getXmppConnection() != null) {
1062			this.disconnect(account, true);
1063		}
1064		databaseBackend.deleteAccount(account);
1065		this.accounts.remove(account);
1066		if (accountChangedListener != null)
1067			accountChangedListener.onAccountListChangedListener();
1068	}
1069
1070	public void setOnConversationListChangedListener(
1071			OnConversationListChangedListener listener) {
1072		this.convChangedListener = listener;
1073		this.convChangedListenerCount++;
1074	}
1075
1076	public void removeOnConversationListChangedListener() {
1077		this.convChangedListenerCount--;
1078		if (this.convChangedListenerCount==0) {
1079			this.convChangedListener = null;
1080		}
1081	}
1082
1083	public void setOnAccountListChangedListener(
1084			OnAccountListChangedListener listener) {
1085		this.accountChangedListener = listener;
1086	}
1087
1088	public void removeOnAccountListChangedListener() {
1089		this.accountChangedListener = null;
1090	}
1091
1092	public void connectMultiModeConversations(Account account) {
1093		List<Conversation> conversations = getConversations();
1094		for (int i = 0; i < conversations.size(); i++) {
1095			Conversation conversation = conversations.get(i);
1096			if ((conversation.getMode() == Conversation.MODE_MULTI)
1097					&& (conversation.getAccount() == account)) {
1098				joinMuc(conversation);
1099			}
1100		}
1101	}
1102
1103	public void joinMuc(Conversation conversation) {
1104		String[] mucParts = conversation.getContactJid().split("/");
1105		String muc;
1106		String nick;
1107		if (mucParts.length == 2) {
1108			muc = mucParts[0];
1109			nick = mucParts[1];
1110		} else {
1111			muc = mucParts[0];
1112			nick = conversation.getAccount().getUsername();
1113		}
1114		PresencePacket packet = new PresencePacket();
1115		packet.setAttribute("to", muc + "/" + nick);
1116		Element x = new Element("x");
1117		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1118		if (conversation.getMessages().size() != 0) {
1119			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1120			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1121			x.addChild("history").setAttribute("seconds", diff + "");
1122		}
1123		packet.addChild(x);
1124		conversation.getAccount().getXmppConnection()
1125				.sendPresencePacket(packet);
1126	}
1127
1128	private OnRenameListener renameListener = null;
1129
1130	public void setOnRenameListener(OnRenameListener listener) {
1131		this.renameListener = listener;
1132	}
1133
1134	public void renameInMuc(final Conversation conversation, final String nick) {
1135		final MucOptions options = conversation.getMucOptions();
1136		if (options.online()) {
1137			options.setOnRenameListener(new OnRenameListener() {
1138
1139				@Override
1140				public void onRename(boolean success) {
1141					if (renameListener != null) {
1142						renameListener.onRename(success);
1143					}
1144					if (success) {
1145						databaseBackend.updateConversation(conversation);
1146					}
1147				}
1148			});
1149			options.flagAboutToRename();
1150			PresencePacket packet = new PresencePacket();
1151			packet.setAttribute("to",
1152					conversation.getContactJid().split("/")[0] + "/" + nick);
1153			packet.setAttribute("from", conversation.getAccount().getFullJid());
1154
1155			conversation.getAccount().getXmppConnection()
1156					.sendPresencePacket(packet, null);
1157		} else {
1158			String jid = conversation.getContactJid().split("/")[0] + "/"
1159					+ nick;
1160			conversation.setContactJid(jid);
1161			databaseBackend.updateConversation(conversation);
1162			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1163				joinMuc(conversation);
1164			}
1165		}
1166	}
1167
1168	public void leaveMuc(Conversation conversation) {
1169		PresencePacket packet = new PresencePacket();
1170		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1171		packet.setAttribute("from", conversation.getAccount().getFullJid());
1172		packet.setAttribute("type", "unavailable");
1173		Log.d(LOGTAG,"send leaving muc " + packet);
1174		conversation.getAccount().getXmppConnection()
1175				.sendPresencePacket(packet);
1176		conversation.getMucOptions().setOffline();
1177	}
1178
1179	public void disconnect(Account account, boolean force) {
1180		if ((account.getStatus() == Account.STATUS_ONLINE)
1181				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1182			if (!force) {
1183				List<Conversation> conversations = getConversations();
1184				for (int i = 0; i < conversations.size(); i++) {
1185					Conversation conversation = conversations.get(i);
1186					if (conversation.getAccount() == account) {
1187						if (conversation.getMode() == Conversation.MODE_MULTI) {
1188							leaveMuc(conversation);
1189						} else {
1190							conversation.endOtrIfNeeded();
1191						}
1192					}
1193				}
1194			}
1195			account.getXmppConnection().disconnect(force);
1196		}
1197	}
1198
1199	@Override
1200	public IBinder onBind(Intent intent) {
1201		return mBinder;
1202	}
1203
1204	public void updateContact(Contact contact) {
1205		databaseBackend.updateContact(contact);
1206		replaceContactInConversation(contact.getJid(), contact);
1207	}
1208
1209	public void updateMessage(Message message) {
1210		databaseBackend.updateMessage(message);
1211	}
1212
1213	public void createContact(Contact contact) {
1214		SharedPreferences sharedPref = getPreferences();
1215		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1216		if (autoGrant) {
1217			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1218			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1219		}
1220		databaseBackend.createContact(contact);
1221		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1222		Element query = new Element("query");
1223		query.setAttribute("xmlns", "jabber:iq:roster");
1224		Element item = new Element("item");
1225		item.setAttribute("jid", contact.getJid());
1226		item.setAttribute("name", contact.getJid());
1227		query.addChild(item);
1228		iq.addChild(query);
1229		Account account = contact.getAccount();
1230		account.getXmppConnection().sendIqPacket(iq, null);
1231		if (autoGrant) {
1232			requestPresenceUpdatesFrom(contact);
1233		}
1234		replaceContactInConversation(contact.getJid(), contact);
1235	}
1236
1237	public void requestPresenceUpdatesFrom(Contact contact) {
1238		// Requesting a Subscription type=subscribe
1239		PresencePacket packet = new PresencePacket();
1240		packet.setAttribute("type", "subscribe");
1241		packet.setAttribute("to", contact.getJid());
1242		packet.setAttribute("from", contact.getAccount().getJid());
1243		Log.d(LOGTAG, packet.toString());
1244		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1245	}
1246
1247	public void stopPresenceUpdatesFrom(Contact contact) {
1248		// Unsubscribing type='unsubscribe'
1249		PresencePacket packet = new PresencePacket();
1250		packet.setAttribute("type", "unsubscribe");
1251		packet.setAttribute("to", contact.getJid());
1252		packet.setAttribute("from", contact.getAccount().getJid());
1253		Log.d(LOGTAG, packet.toString());
1254		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1255	}
1256
1257	public void stopPresenceUpdatesTo(Contact contact) {
1258		// Canceling a Subscription type=unsubscribed
1259		PresencePacket packet = new PresencePacket();
1260		packet.setAttribute("type", "unsubscribed");
1261		packet.setAttribute("to", contact.getJid());
1262		packet.setAttribute("from", contact.getAccount().getJid());
1263		Log.d(LOGTAG, packet.toString());
1264		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1265	}
1266
1267	public void sendPresenceUpdatesTo(Contact contact) {
1268		// type='subscribed'
1269		PresencePacket packet = new PresencePacket();
1270		packet.setAttribute("type", "subscribed");
1271		packet.setAttribute("to", contact.getJid());
1272		packet.setAttribute("from", contact.getAccount().getJid());
1273		Log.d(LOGTAG, packet.toString());
1274		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1275	}
1276
1277	public void sendPgpPresence(Account account, String signature) {
1278		PresencePacket packet = new PresencePacket();
1279		packet.setAttribute("from", account.getFullJid());
1280		Element status = new Element("status");
1281		status.setContent("online");
1282		packet.addChild(status);
1283		Element x = new Element("x");
1284		x.setAttribute("xmlns", "jabber:x:signed");
1285		x.setContent(signature);
1286		packet.addChild(x);
1287		account.getXmppConnection().sendPresencePacket(packet);
1288	}
1289
1290	public void generatePgpAnnouncement(Account account)
1291			throws PgpEngine.UserInputRequiredException {
1292		if (account.getStatus() == Account.STATUS_ONLINE) {
1293			String signature = getPgpEngine().generateSignature("online");
1294			account.setKey("pgp_signature", signature);
1295			databaseBackend.updateAccount(account);
1296			sendPgpPresence(account, signature);
1297		}
1298	}
1299
1300	public void updateConversation(Conversation conversation) {
1301		this.databaseBackend.updateConversation(conversation);
1302	}
1303
1304	public Contact findContact(String uuid) {
1305		Contact contact = this.databaseBackend.getContact(uuid);
1306		if (contact!=null) {
1307			for (Account account : getAccounts()) {
1308				if (contact.getAccountUuid().equals(account.getUuid())) {
1309					contact.setAccount(account);
1310				}
1311			}
1312		}
1313		return contact;
1314	}
1315
1316	public void removeOnTLSExceptionReceivedListener() {
1317		this.tlsException = null;
1318	}
1319
1320	// TODO dont let thread sleep but schedule wake up
1321	public void reconnectAccount(final Account account, final boolean force) {
1322		new Thread(new Runnable() {
1323
1324			@Override
1325			public void run() {
1326				if (account.getXmppConnection() != null) {
1327					disconnect(account, force);
1328				}
1329				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1330					if (account.getXmppConnection() == null) {
1331						account.setXmppConnection(createConnection(account));
1332					}
1333					Thread thread = new Thread(account.getXmppConnection());
1334					thread.start();
1335					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1336				}
1337			}
1338		}).start();
1339	}
1340
1341	public void updateConversationInGui() {
1342		if (convChangedListener != null) {
1343			convChangedListener.onConversationListChanged();
1344		}
1345	}
1346
1347	public void sendConversationSubject(Conversation conversation,
1348			String subject) {
1349		MessagePacket packet = new MessagePacket();
1350		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1351		packet.setTo(conversation.getContactJid().split("/")[0]);
1352		Element subjectChild = new Element("subject");
1353		subjectChild.setContent(subject);
1354		packet.addChild(subjectChild);
1355		packet.setFrom(conversation.getAccount().getJid());
1356		Account account = conversation.getAccount();
1357		if (account.getStatus() == Account.STATUS_ONLINE) {
1358			account.getXmppConnection().sendMessagePacket(packet);
1359		}
1360	}
1361
1362	public void inviteToConference(Conversation conversation,
1363			List<Contact> contacts) {
1364		for (Contact contact : contacts) {
1365			MessagePacket packet = new MessagePacket();
1366			packet.setTo(conversation.getContactJid().split("/")[0]);
1367			packet.setFrom(conversation.getAccount().getFullJid());
1368			Element x = new Element("x");
1369			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1370			Element invite = new Element("invite");
1371			invite.setAttribute("to", contact.getJid());
1372			x.addChild(invite);
1373			packet.addChild(x);
1374			Log.d(LOGTAG, packet.toString());
1375			conversation.getAccount().getXmppConnection()
1376					.sendMessagePacket(packet);
1377		}
1378
1379	}
1380	
1381	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1382		boolean marked = false;
1383		for(Conversation conversation : getConversations()) {
1384			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1385				for(Message message : conversation.getMessages()) {
1386					if (message.getUuid().equals(uuid)) {
1387						markMessage(message, status);
1388						marked = true;
1389						break;
1390					}
1391				}
1392				break;
1393			}
1394		}
1395		return marked;
1396	}
1397	
1398	public void markMessage(Message message, int status) {
1399		message.setStatus(status);
1400		databaseBackend.updateMessage(message);
1401		if (convChangedListener!=null) {
1402			convChangedListener.onConversationListChanged();
1403		}
1404	}
1405	
1406	public SharedPreferences getPreferences() {
1407		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1408	}
1409}