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.hasChild("body")
 138						&& (packet.getBody().startsWith("?OTR"))) {
 139					message = MessageParser.parseOtrChat(packet, account,
 140							service);
 141					if (message != null) {
 142						message.markUnread();
 143					}
 144				} else if (packet.hasChild("body")) {
 145					message = MessageParser.parsePlainTextChat(packet, account,
 146							service);
 147					message.markUnread();
 148				} else if (packet.hasChild("received")
 149						|| (packet.hasChild("sent"))) {
 150					message = MessageParser.parseCarbonMessage(packet, account,
 151							service);
 152					if (message != null) {
 153						if (message.getStatus() == Message.STATUS_SEND) {
 154							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 155							notify = false;
 156							message.getConversation().markRead();
 157						} else {
 158							message.markUnread();
 159						}
 160					}
 161				}
 162
 163			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 164				message = MessageParser
 165						.parseGroupchat(packet, account, service);
 166				if (message != null) {
 167					if (message.getStatus() == Message.STATUS_RECIEVED) {
 168						message.markUnread();
 169					} else {
 170						message.getConversation().markRead();
 171						notify = false;
 172					}
 173				}
 174			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 175				MessageParser.parseError(packet, account, service);
 176				return;
 177			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 178				if (packet.hasChild("x")) {
 179					Element x = packet.findChild("x");
 180					if (x.hasChild("invite")) {
 181						findOrCreateConversation(account, packet.getFrom(),
 182								true);
 183						if (convChangedListener != null) {
 184							convChangedListener.onConversationListChanged();
 185						}
 186						Log.d(LOGTAG,
 187								"invitation received to " + packet.getFrom());
 188					}
 189
 190				} else {
 191					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 192				}
 193			}
 194			if ((message == null) || (message.getBody() == null)) {
 195				return;
 196			}
 197			if (packet.hasChild("delay")) {
 198				try {
 199					String stamp = packet.findChild("delay").getAttribute(
 200							"stamp");
 201					stamp = stamp.replace("Z", "+0000");
 202					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 203							.parse(stamp);
 204					message.setTime(date.getTime());
 205				} catch (ParseException e) {
 206					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 207				}
 208			}
 209			Conversation conversation = message.getConversation();
 210			conversation.getMessages().add(message);
 211			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 212				databaseBackend.createMessage(message);
 213			}
 214			if (convChangedListener != null) {
 215				convChangedListener.onConversationListChanged();
 216			} else {
 217				UIHelper.updateNotification(getApplicationContext(),
 218						getConversations(), message.getConversation(), notify);
 219			}
 220		}
 221	};
 222	private OnStatusChanged statusListener = new OnStatusChanged() {
 223
 224		@Override
 225		public void onStatusChanged(Account account) {
 226			if (accountChangedListener != null) {
 227				accountChangedListener.onAccountListChangedListener();
 228			}
 229			if (account.getStatus() == Account.STATUS_ONLINE) {
 230				List<Conversation> conversations = getConversations();
 231				for (int i = 0; i < conversations.size(); ++i) {
 232					if (conversations.get(i).getAccount() == account) {
 233						sendUnsendMessages(conversations.get(i));
 234					}
 235				}
 236				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 237			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 238				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 239					int timeToReconnect = mRandom.nextInt(50) + 10;
 240					scheduleWakeupCall(timeToReconnect, false);
 241				}
 242
 243			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 244				databaseBackend.updateAccount(account);
 245				reconnectAccount(account, true);
 246			} else {
 247				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 248			}
 249		}
 250	};
 251
 252	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 253
 254		@Override
 255		public void onPresencePacketReceived(Account account,
 256				PresencePacket packet) {
 257			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 258				Conversation muc = findMuc(
 259						packet.getAttribute("from").split("/")[0], account);
 260				if (muc != null) {
 261					muc.getMucOptions().processPacket(packet);
 262				} else {
 263					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 264				}
 265			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 266				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 267				if (muc != null) {
 268					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 269					int error = muc.getMucOptions().getError();
 270					muc.getMucOptions().processPacket(packet);
 271					if ((muc.getMucOptions().getError() != error)
 272							&& (convChangedListener != null)) {
 273						Log.d(LOGTAG, "muc error status changed");
 274						convChangedListener.onConversationListChanged();
 275					}
 276				}
 277			} else {
 278				String[] fromParts = packet.getAttribute("from").split("/");
 279				String type = packet.getAttribute("type");
 280				if (fromParts[0].equals(account.getJid())) {
 281					if (fromParts.length==2) {
 282						if (type == null) {
 283							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 284						} else if (type.equals("unavailable")) {
 285							account.removePresence(fromParts[1]);
 286						}
 287					}
 288						
 289				} else {
 290					Contact contact = findContact(account, fromParts[0]);
 291					if (contact == null) {
 292						// most likely roster not synced
 293						return;
 294					}
 295					if (type == null) {
 296						if (fromParts.length == 2) {
 297							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 298							PgpEngine pgp = getPgpEngine();
 299							if (pgp != null) {
 300								Element x = packet.findChild("x","jabber:x:signed");
 301								if (x != null) {
 302									try {
 303										Element status = packet.findChild("status");
 304										String msg;
 305										if (status!=null) {
 306											msg = status.getContent();
 307										} else {
 308											msg = "";
 309										}
 310										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 311														.getContent()));
 312									} catch (OpenPgpException e) {
 313										Log.d(LOGTAG, "faulty pgp. just ignore");
 314									}
 315								}
 316							}
 317							databaseBackend.updateContact(contact);
 318						} else {
 319							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 320						}
 321					} else if (type.equals("unavailable")) {
 322						if (fromParts.length != 2) {
 323							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 324						} else {
 325							contact.removePresence(fromParts[1]);
 326							databaseBackend.updateContact(contact);
 327						}
 328					} else if (type.equals("subscribe")) {
 329						if (contact
 330								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 331							sendPresenceUpdatesTo(contact);
 332							contact.setSubscriptionOption(Contact.Subscription.FROM);
 333							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 334							replaceContactInConversation(contact.getJid(),
 335									contact);
 336							databaseBackend.updateContact(contact);
 337							if ((contact
 338									.getSubscriptionOption(Contact.Subscription.ASKING))
 339									&& (!contact
 340											.getSubscriptionOption(Contact.Subscription.TO))) {
 341								requestPresenceUpdatesFrom(contact);
 342							}
 343						} else {
 344							// TODO: ask user to handle it maybe
 345						}
 346					} else {
 347						//Log.d(LOGTAG, packet.toString());
 348					}
 349					replaceContactInConversation(contact.getJid(), contact);
 350				}
 351			}
 352		}
 353	};
 354
 355	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 356
 357		@Override
 358		public void onIqPacketReceived(Account account, IqPacket packet) {
 359			if (packet.hasChild("query")) {
 360				Element query = packet.findChild("query");
 361				String xmlns = query.getAttribute("xmlns");
 362				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 363					processRosterItems(account, query);
 364					mergePhoneContactsWithRoster(null);
 365				}
 366			} else {
 367				Log.d(LOGTAG,"iq packet arrived "+packet.toString());
 368			}
 369		}
 370	};
 371	
 372	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 373		
 374		@Override
 375		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 376			mJingleConnectionManager.deliverPacket(account, packet);
 377		}
 378	};
 379
 380	private OpenPgpServiceConnection pgpServiceConnection;
 381	private PgpEngine mPgpEngine = null;
 382	private Intent pingIntent;
 383	private PendingIntent pendingPingIntent = null;
 384	private WakeLock wakeLock;
 385	private PowerManager pm;
 386
 387	public PgpEngine getPgpEngine() {
 388		if (pgpServiceConnection.isBound()) {
 389			if (this.mPgpEngine == null) {
 390				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 391						getApplicationContext(),
 392						pgpServiceConnection.getService()));
 393			}
 394			return mPgpEngine;
 395		} else {
 396			return null;
 397		}
 398
 399	}
 400
 401	public FileBackend getFileBackend() {
 402		return this.fileBackend;
 403	}
 404	
 405	public Message attachImageToConversation(Conversation conversation, String presence, Uri uri) {
 406		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 407		message.setPresence(presence);
 408		message.setType(Message.TYPE_IMAGE);
 409		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 410		conversation.getMessages().add(message);
 411		databaseBackend.createMessage(message);
 412		sendMessage(message, null);
 413		return message;
 414	}
 415	
 416	
 417	protected Conversation findMuc(String name, Account account) {
 418		for (Conversation conversation : this.conversations) {
 419			if (conversation.getContactJid().split("/")[0].equals(name)
 420					&& (conversation.getAccount() == account)) {
 421				return conversation;
 422			}
 423		}
 424		return null;
 425	}
 426
 427	private void processRosterItems(Account account, Element elements) {
 428		String version = elements.getAttribute("ver");
 429		if (version != null) {
 430			account.setRosterVersion(version);
 431			databaseBackend.updateAccount(account);
 432		}
 433		for (Element item : elements.getChildren()) {
 434			if (item.getName().equals("item")) {
 435				String jid = item.getAttribute("jid");
 436				String subscription = item.getAttribute("subscription");
 437				Contact contact = databaseBackend.findContact(account, jid);
 438				if (contact == null) {
 439					if (!subscription.equals("remove")) {
 440						String name = item.getAttribute("name");
 441						if (name == null) {
 442							name = jid.split("@")[0];
 443						}
 444						contact = new Contact(account, name, jid, null);
 445						contact.parseSubscriptionFromElement(item);
 446						databaseBackend.createContact(contact);
 447					}
 448				} else {
 449					if (subscription.equals("remove")) {
 450						databaseBackend.deleteContact(contact);
 451						replaceContactInConversation(contact.getJid(), null);
 452					} else {
 453						contact.parseSubscriptionFromElement(item);
 454						databaseBackend.updateContact(contact);
 455						replaceContactInConversation(contact.getJid(), contact);
 456					}
 457				}
 458			}
 459		}
 460	}
 461
 462	private void replaceContactInConversation(String jid, Contact contact) {
 463		List<Conversation> conversations = getConversations();
 464		for (int i = 0; i < conversations.size(); ++i) {
 465			if ((conversations.get(i).getContactJid().equals(jid))) {
 466				conversations.get(i).setContact(contact);
 467				break;
 468			}
 469		}
 470	}
 471
 472	public class XmppConnectionBinder extends Binder {
 473		public XmppConnectionService getService() {
 474			return XmppConnectionService.this;
 475		}
 476	}
 477
 478	@Override
 479	public int onStartCommand(Intent intent, int flags, int startId) {
 480		this.wakeLock.acquire();
 481		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 482		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 483				.getSystemService(Context.CONNECTIVITY_SERVICE);
 484		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 485		boolean isConnected = activeNetwork != null
 486				&& activeNetwork.isConnected();
 487
 488		for (Account account : accounts) {
 489			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 490				if (!isConnected) {
 491					account.setStatus(Account.STATUS_NO_INTERNET);
 492					if (statusListener != null) {
 493						statusListener.onStatusChanged(account);
 494					}
 495				} else {
 496					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 497						account.setStatus(Account.STATUS_OFFLINE);
 498						if (statusListener != null) {
 499							statusListener.onStatusChanged(account);
 500						}
 501					}
 502
 503					// TODO 3 remaining cases
 504					if (account.getStatus() == Account.STATUS_ONLINE) {
 505						long lastReceived = account.getXmppConnection().lastPaketReceived;
 506						long lastSent = account.getXmppConnection().lastPingSent;
 507						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 508							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 509							this.reconnectAccount(account, true);
 510						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 511							account.getXmppConnection().sendPing();
 512							account.getXmppConnection().lastPingSent = SystemClock
 513									.elapsedRealtime();
 514							this.scheduleWakeupCall(2, false);
 515						}
 516					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 517						if (account.getXmppConnection() == null) {
 518							account.setXmppConnection(this
 519									.createConnection(account));
 520						}
 521						account.getXmppConnection().lastPingSent = SystemClock
 522								.elapsedRealtime();
 523						new Thread(account.getXmppConnection()).start();
 524					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 525							&& ((SystemClock.elapsedRealtime() - account
 526									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 527						Log.d(LOGTAG, account.getJid()
 528								+ ": time out during connect reconnecting");
 529						reconnectAccount(account, true);
 530					} else {
 531						Log.d(LOGTAG,
 532								"seconds since last connect:"
 533										+ ((SystemClock.elapsedRealtime() - account
 534												.getXmppConnection().lastConnect) / 1000));
 535						Log.d(LOGTAG,
 536								account.getJid() + ": status="
 537										+ account.getStatus());
 538						// TODO notify user of ssl cert problem or auth problem
 539						// or what ever
 540					}
 541					// in any case. reschedule wakup call
 542					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 543				}
 544				if (accountChangedListener != null) {
 545					accountChangedListener.onAccountListChangedListener();
 546				}
 547			}
 548		}
 549		if (wakeLock.isHeld()) {
 550			wakeLock.release();
 551		}
 552		return START_STICKY;
 553	}
 554
 555	@Override
 556	public void onCreate() {
 557		ExceptionHelper.init(getApplicationContext());
 558		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 559		this.fileBackend = new FileBackend(getApplicationContext());
 560		this.accounts = databaseBackend.getAccounts();
 561
 562		this.getConversations();
 563		
 564		getContentResolver().registerContentObserver(
 565				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 566		this.pgpServiceConnection = new OpenPgpServiceConnection(
 567				getApplicationContext(), "org.sufficientlysecure.keychain");
 568		this.pgpServiceConnection.bindToService();
 569
 570		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 571		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 572				"XmppConnectionService");
 573	}
 574
 575	@Override
 576	public void onDestroy() {
 577		super.onDestroy();
 578		for (Account account : accounts) {
 579			if (account.getXmppConnection() != null) {
 580				disconnect(account, true);
 581			}
 582		}
 583	}
 584
 585	protected void scheduleWakeupCall(int seconds, boolean ping) {
 586		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 587		Context context = getApplicationContext();
 588		AlarmManager alarmManager = (AlarmManager) context
 589				.getSystemService(Context.ALARM_SERVICE);
 590
 591		if (ping) {
 592			if (this.pingIntent == null) {
 593				this.pingIntent = new Intent(context, EventReceiver.class);
 594				this.pingIntent.setAction("ping");
 595				this.pingIntent.putExtra("time", timeToWake);
 596				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 597						this.pingIntent, 0);
 598				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 599						timeToWake, pendingPingIntent);
 600				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 601			} else {
 602				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 603				if (scheduledTime < SystemClock.elapsedRealtime()
 604						|| (scheduledTime > timeToWake)) {
 605					this.pingIntent.putExtra("time", timeToWake);
 606					alarmManager.cancel(this.pendingPingIntent);
 607					this.pendingPingIntent = PendingIntent.getBroadcast(
 608							context, 0, this.pingIntent, 0);
 609					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 610							timeToWake, pendingPingIntent);
 611					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 612				}
 613			}
 614		} else {
 615			Intent intent = new Intent(context, EventReceiver.class);
 616			intent.setAction("ping_check");
 617			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 618					intent, 0);
 619			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 620					alarmIntent);
 621		}
 622
 623	}
 624
 625	public XmppConnection createConnection(Account account) {
 626		SharedPreferences sharedPref = getPreferences();
 627		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 628		XmppConnection connection = new XmppConnection(account, this.pm);
 629		connection.setOnMessagePacketReceivedListener(this.messageListener);
 630		connection.setOnStatusChangedListener(this.statusListener);
 631		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 632		connection
 633				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 634		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 635		connection
 636				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 637
 638					@Override
 639					public void onTLSExceptionReceived(String fingerprint,
 640							Account account) {
 641						Log.d(LOGTAG, "tls exception arrived in service");
 642						if (tlsException != null) {
 643							tlsException.onTLSExceptionReceived(fingerprint,
 644									account);
 645						}
 646					}
 647				});
 648		connection.setOnBindListener(new OnBindListener() {
 649
 650			@Override
 651			public void onBind(Account account) {
 652				databaseBackend.clearPresences(account);
 653				account.clearPresences(); // self presences
 654				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 655					updateRoster(account, null);
 656				}
 657				connectMultiModeConversations(account);
 658				if (convChangedListener != null) {
 659					convChangedListener.onConversationListChanged();
 660				}
 661			}
 662		});
 663		return connection;
 664	}
 665
 666	synchronized public void sendMessage(Message message, String presence) {
 667		Account account = message.getConversation().getAccount();
 668		Conversation conv = message.getConversation();
 669		MessagePacket packet = null;
 670		boolean saveInDb = false;
 671		boolean addToConversation = false;
 672		boolean send = false;
 673		if (account.getStatus() == Account.STATUS_ONLINE) {
 674			if (message.getType() == Message.TYPE_IMAGE) {
 675				mJingleConnectionManager.createNewConnection(message);
 676			} else {
 677				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 678					if (!conv.hasValidOtrSession()) {
 679						// starting otr session. messages will be send later
 680						conv.startOtrSession(getApplicationContext(), presence,true);
 681					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 682						// otr session aleary exists, creating message packet
 683						// accordingly
 684						packet = prepareMessagePacket(account, message,
 685								conv.getOtrSession());
 686						send = true;
 687						message.setStatus(Message.STATUS_SEND);
 688					}
 689					saveInDb = true;
 690					addToConversation = true;
 691				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 692					message.getConversation().endOtrIfNeeded();
 693					long keyId = message.getConversation().getContact()
 694							.getPgpKeyId();
 695					packet = new MessagePacket();
 696					packet.setType(MessagePacket.TYPE_CHAT);
 697					packet.setFrom(message.getConversation().getAccount()
 698							.getFullJid());
 699					packet.setTo(message.getCounterpart());
 700					packet.setBody("This is an XEP-0027 encryted message");
 701					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 702					message.setStatus(Message.STATUS_SEND);
 703					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 704					saveInDb = true;
 705					addToConversation = true;
 706					send = true;
 707				} else {
 708					message.getConversation().endOtrIfNeeded();
 709					// don't encrypt
 710					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 711						message.setStatus(Message.STATUS_SEND);
 712						saveInDb = true;
 713						addToConversation = true;
 714					}
 715					packet = prepareMessagePacket(account, message, null);
 716					send = true;
 717				}
 718			}
 719		} else {
 720			// account is offline
 721			saveInDb = true;
 722			addToConversation = true;
 723
 724		}
 725		if (saveInDb) {
 726			databaseBackend.createMessage(message);
 727		}
 728		if (addToConversation) {
 729			conv.getMessages().add(message);
 730			if (convChangedListener != null) {
 731				convChangedListener.onConversationListChanged();
 732			}
 733		}
 734		if ((send)&&(packet!=null)) {
 735			account.getXmppConnection().sendMessagePacket(packet);
 736		}
 737
 738	}
 739
 740	private void sendUnsendMessages(Conversation conversation) {
 741		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 742			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 743				Message message = conversation.getMessages().get(i);
 744				MessagePacket packet = prepareMessagePacket(
 745						conversation.getAccount(), message, null);
 746				conversation.getAccount().getXmppConnection()
 747						.sendMessagePacket(packet);
 748				message.setStatus(Message.STATUS_SEND);
 749				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 750					databaseBackend.updateMessage(message);
 751				} else {
 752					databaseBackend.deleteMessage(message);
 753					conversation.getMessages().remove(i);
 754					i--;
 755				}
 756			}
 757		}
 758	}
 759
 760	public MessagePacket prepareMessagePacket(Account account, Message message,
 761			Session otrSession) {
 762		MessagePacket packet = new MessagePacket();
 763		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 764			packet.setType(MessagePacket.TYPE_CHAT);
 765			if (otrSession != null) {
 766				try {
 767					packet.setBody(otrSession.transformSending(message
 768							.getBody()));
 769				} catch (OtrException e) {
 770					Log.d(LOGTAG,
 771							account.getJid()
 772									+ ": could not encrypt message to "
 773									+ message.getCounterpart());
 774				}
 775				packet.addChild("private","urn:xmpp:carbons:2");
 776				packet.addChild("no-copy","urn:xmpp:hints");
 777				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 778						+ otrSession.getSessionID().getUserID());
 779				packet.setFrom(account.getFullJid());
 780			} else {
 781				packet.setBody(message.getBody());
 782				packet.setTo(message.getCounterpart());
 783				packet.setFrom(account.getJid());
 784			}
 785		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 786			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 787			packet.setBody(message.getBody());
 788			packet.setTo(message.getCounterpart().split("/")[0]);
 789			packet.setFrom(account.getJid());
 790		}
 791		packet.setId(message.getUuid());
 792		return packet;
 793	}
 794
 795	private void getRoster(Account account,
 796			final OnRosterFetchedListener listener) {
 797		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 798		for (int i = 0; i < contacts.size(); ++i) {
 799			contacts.get(i).setAccount(account);
 800		}
 801		if (listener != null) {
 802			listener.onRosterFetched(contacts);
 803		}
 804	}
 805
 806	public List<Contact> getRoster(Account account) {
 807		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 808		for (int i = 0; i < contacts.size(); ++i) {
 809			contacts.get(i).setAccount(account);
 810		}
 811		return contacts;
 812	}
 813
 814	public void updateRoster(final Account account,
 815			final OnRosterFetchedListener listener) {
 816		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 817		if (!"".equals(account.getRosterVersion())) {
 818			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 819					+ account.getRosterVersion());
 820		} else {
 821			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 822		}
 823		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 824		account.getXmppConnection().sendIqPacket(iqPacket,
 825				new OnIqPacketReceived() {
 826
 827					@Override
 828					public void onIqPacketReceived(final Account account,
 829							IqPacket packet) {
 830						Element roster = packet.findChild("query");
 831						if (roster != null) {
 832							Log.d(LOGTAG, account.getJid()
 833									+ ": processing roster");
 834							processRosterItems(account, roster);
 835							StringBuilder mWhere = new StringBuilder();
 836							mWhere.append("jid NOT IN(");
 837							List<Element> items = roster.getChildren();
 838							for (int i = 0; i < items.size(); ++i) {
 839								mWhere.append(DatabaseUtils
 840										.sqlEscapeString(items.get(i)
 841												.getAttribute("jid")));
 842								if (i != items.size() - 1) {
 843									mWhere.append(",");
 844								}
 845							}
 846							mWhere.append(") and accountUuid = \"");
 847							mWhere.append(account.getUuid());
 848							mWhere.append("\"");
 849							List<Contact> contactsToDelete = databaseBackend
 850									.getContacts(mWhere.toString());
 851							for (Contact contact : contactsToDelete) {
 852								databaseBackend.deleteContact(contact);
 853								replaceContactInConversation(contact.getJid(),
 854										null);
 855							}
 856
 857						} else {
 858							Log.d(LOGTAG, account.getJid()
 859									+ ": empty roster returend");
 860						}
 861						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 862
 863							@Override
 864							public void phoneContactsMerged() {
 865								if (listener != null) {
 866									getRoster(account, listener);
 867								}
 868							}
 869						});
 870					}
 871				});
 872	}
 873
 874	public void mergePhoneContactsWithRoster(
 875			final OnPhoneContactsMerged listener) {
 876		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 877				new OnPhoneContactsLoadedListener() {
 878					@Override
 879					public void onPhoneContactsLoaded(
 880							Hashtable<String, Bundle> phoneContacts) {
 881						List<Contact> contacts = databaseBackend
 882								.getContactsByAccount(null);
 883						for (int i = 0; i < contacts.size(); ++i) {
 884							Contact contact = contacts.get(i);
 885							if (phoneContacts.containsKey(contact.getJid())) {
 886								Bundle phoneContact = phoneContacts.get(contact
 887										.getJid());
 888								String systemAccount = phoneContact
 889										.getInt("phoneid")
 890										+ "#"
 891										+ phoneContact.getString("lookup");
 892								contact.setSystemAccount(systemAccount);
 893								contact.setPhotoUri(phoneContact
 894										.getString("photouri"));
 895								contact.setDisplayName(phoneContact
 896										.getString("displayname"));
 897								databaseBackend.updateContact(contact);
 898								replaceContactInConversation(contact.getJid(),
 899										contact);
 900							} else {
 901								if ((contact.getSystemAccount() != null)
 902										|| (contact.getProfilePhoto() != null)) {
 903									contact.setSystemAccount(null);
 904									contact.setPhotoUri(null);
 905									databaseBackend.updateContact(contact);
 906									replaceContactInConversation(
 907											contact.getJid(), contact);
 908								}
 909							}
 910						}
 911						if (listener != null) {
 912							listener.phoneContactsMerged();
 913						}
 914					}
 915				});
 916	}
 917
 918	public List<Conversation> getConversations() {
 919		if (this.conversations == null) {
 920			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 921			for (Account account : this.accounts) {
 922				accountLookupTable.put(account.getUuid(), account);
 923			}
 924			this.conversations = databaseBackend
 925					.getConversations(Conversation.STATUS_AVAILABLE);
 926			for (Conversation conv : this.conversations) {
 927				Account account = accountLookupTable.get(conv.getAccountUuid());
 928				conv.setAccount(account);
 929				conv.setContact(findContact(account, conv.getContactJid()));
 930				conv.setMessages(databaseBackend.getMessages(conv, 50));
 931			}
 932		}
 933		Collections.sort(this.conversations, new Comparator<Conversation>() {
 934			@Override
 935			public int compare(Conversation lhs, Conversation rhs) {
 936				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 937						.getLatestMessage().getTimeSent());
 938			}
 939		});
 940		return this.conversations;
 941	}
 942
 943	public List<Account> getAccounts() {
 944		return this.accounts;
 945	}
 946
 947	public Contact findContact(Account account, String jid) {
 948		Contact contact = databaseBackend.findContact(account, jid);
 949		if (contact != null) {
 950			contact.setAccount(account);
 951		}
 952		return contact;
 953	}
 954
 955	public Conversation findOrCreateConversation(Account account, String jid,
 956			boolean muc) {
 957		for (Conversation conv : this.getConversations()) {
 958			if ((conv.getAccount().equals(account))
 959					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 960				return conv;
 961			}
 962		}
 963		Conversation conversation = databaseBackend.findConversation(account,
 964				jid);
 965		if (conversation != null) {
 966			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 967			conversation.setAccount(account);
 968			if (muc) {
 969				conversation.setMode(Conversation.MODE_MULTI);
 970			} else {
 971				conversation.setMode(Conversation.MODE_SINGLE);
 972			}
 973			conversation.setMessages(databaseBackend.getMessages(conversation,
 974					50));
 975			this.databaseBackend.updateConversation(conversation);
 976			conversation.setContact(findContact(account,
 977					conversation.getContactJid()));
 978		} else {
 979			String conversationName;
 980			Contact contact = findContact(account, jid);
 981			if (contact != null) {
 982				conversationName = contact.getDisplayName();
 983			} else {
 984				conversationName = jid.split("@")[0];
 985			}
 986			if (muc) {
 987				conversation = new Conversation(conversationName, account, jid,
 988						Conversation.MODE_MULTI);
 989			} else {
 990				conversation = new Conversation(conversationName, account, jid,
 991						Conversation.MODE_SINGLE);
 992			}
 993			conversation.setContact(contact);
 994			this.databaseBackend.createConversation(conversation);
 995		}
 996		this.conversations.add(conversation);
 997		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
 998			joinMuc(conversation);
 999		}
1000		if (this.convChangedListener != null) {
1001			this.convChangedListener.onConversationListChanged();
1002		}
1003		return conversation;
1004	}
1005
1006	public void archiveConversation(Conversation conversation) {
1007		if (conversation.getMode() == Conversation.MODE_MULTI) {
1008			leaveMuc(conversation);
1009		} else {
1010			conversation.endOtrIfNeeded();
1011		}
1012		this.databaseBackend.updateConversation(conversation);
1013		this.conversations.remove(conversation);
1014		if (this.convChangedListener != null) {
1015			this.convChangedListener.onConversationListChanged();
1016		}
1017	}
1018
1019	public int getConversationCount() {
1020		return this.databaseBackend.getConversationCount();
1021	}
1022
1023	public void createAccount(Account account) {
1024		databaseBackend.createAccount(account);
1025		this.accounts.add(account);
1026		this.reconnectAccount(account, false);
1027		if (accountChangedListener != null)
1028			accountChangedListener.onAccountListChangedListener();
1029	}
1030
1031	public void deleteContact(Contact contact) {
1032		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1033		Element query = iq.query("jabber:iq:roster");
1034		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1035		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1036		replaceContactInConversation(contact.getJid(), null);
1037		databaseBackend.deleteContact(contact);
1038	}
1039
1040	public void updateAccount(Account account) {
1041		this.statusListener.onStatusChanged(account);
1042		databaseBackend.updateAccount(account);
1043		reconnectAccount(account, false);
1044		if (accountChangedListener != null)
1045			accountChangedListener.onAccountListChangedListener();
1046	}
1047
1048	public void deleteAccount(Account account) {
1049		if (account.getXmppConnection() != null) {
1050			this.disconnect(account, true);
1051		}
1052		databaseBackend.deleteAccount(account);
1053		this.accounts.remove(account);
1054		if (accountChangedListener != null)
1055			accountChangedListener.onAccountListChangedListener();
1056	}
1057
1058	public void setOnConversationListChangedListener(
1059			OnConversationListChangedListener listener) {
1060		this.convChangedListener = listener;
1061		this.convChangedListenerCount++;
1062	}
1063
1064	public void removeOnConversationListChangedListener() {
1065		this.convChangedListenerCount--;
1066		if (this.convChangedListenerCount==0) {
1067			this.convChangedListener = null;
1068		}
1069	}
1070
1071	public void setOnAccountListChangedListener(
1072			OnAccountListChangedListener listener) {
1073		this.accountChangedListener = listener;
1074	}
1075
1076	public void removeOnAccountListChangedListener() {
1077		this.accountChangedListener = null;
1078	}
1079
1080	public void connectMultiModeConversations(Account account) {
1081		List<Conversation> conversations = getConversations();
1082		for (int i = 0; i < conversations.size(); i++) {
1083			Conversation conversation = conversations.get(i);
1084			if ((conversation.getMode() == Conversation.MODE_MULTI)
1085					&& (conversation.getAccount() == account)) {
1086				joinMuc(conversation);
1087			}
1088		}
1089	}
1090
1091	public void joinMuc(Conversation conversation) {
1092		String[] mucParts = conversation.getContactJid().split("/");
1093		String muc;
1094		String nick;
1095		if (mucParts.length == 2) {
1096			muc = mucParts[0];
1097			nick = mucParts[1];
1098		} else {
1099			muc = mucParts[0];
1100			nick = conversation.getAccount().getUsername();
1101		}
1102		PresencePacket packet = new PresencePacket();
1103		packet.setAttribute("to", muc + "/" + nick);
1104		Element x = new Element("x");
1105		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1106		if (conversation.getMessages().size() != 0) {
1107			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1108			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1109			x.addChild("history").setAttribute("seconds", diff + "");
1110		}
1111		packet.addChild(x);
1112		conversation.getAccount().getXmppConnection()
1113				.sendPresencePacket(packet);
1114	}
1115
1116	private OnRenameListener renameListener = null;
1117
1118	public void setOnRenameListener(OnRenameListener listener) {
1119		this.renameListener = listener;
1120	}
1121
1122	public void renameInMuc(final Conversation conversation, final String nick) {
1123		final MucOptions options = conversation.getMucOptions();
1124		if (options.online()) {
1125			options.setOnRenameListener(new OnRenameListener() {
1126
1127				@Override
1128				public void onRename(boolean success) {
1129					if (renameListener != null) {
1130						renameListener.onRename(success);
1131					}
1132					if (success) {
1133						databaseBackend.updateConversation(conversation);
1134					}
1135				}
1136			});
1137			options.flagAboutToRename();
1138			PresencePacket packet = new PresencePacket();
1139			packet.setAttribute("to",
1140					conversation.getContactJid().split("/")[0] + "/" + nick);
1141			packet.setAttribute("from", conversation.getAccount().getFullJid());
1142
1143			conversation.getAccount().getXmppConnection()
1144					.sendPresencePacket(packet, null);
1145		} else {
1146			String jid = conversation.getContactJid().split("/")[0] + "/"
1147					+ nick;
1148			conversation.setContactJid(jid);
1149			databaseBackend.updateConversation(conversation);
1150			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1151				joinMuc(conversation);
1152			}
1153		}
1154	}
1155
1156	public void leaveMuc(Conversation conversation) {
1157		PresencePacket packet = new PresencePacket();
1158		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1159		packet.setAttribute("from", conversation.getAccount().getFullJid());
1160		packet.setAttribute("type", "unavailable");
1161		Log.d(LOGTAG,"send leaving muc " + packet);
1162		conversation.getAccount().getXmppConnection()
1163				.sendPresencePacket(packet);
1164		conversation.getMucOptions().setOffline();
1165	}
1166
1167	public void disconnect(Account account, boolean force) {
1168		if ((account.getStatus() == Account.STATUS_ONLINE)
1169				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1170			if (!force) {
1171				List<Conversation> conversations = getConversations();
1172				for (int i = 0; i < conversations.size(); i++) {
1173					Conversation conversation = conversations.get(i);
1174					if (conversation.getAccount() == account) {
1175						if (conversation.getMode() == Conversation.MODE_MULTI) {
1176							leaveMuc(conversation);
1177						} else {
1178							conversation.endOtrIfNeeded();
1179						}
1180					}
1181				}
1182			}
1183			account.getXmppConnection().disconnect(force);
1184		}
1185	}
1186
1187	@Override
1188	public IBinder onBind(Intent intent) {
1189		return mBinder;
1190	}
1191
1192	public void updateContact(Contact contact) {
1193		databaseBackend.updateContact(contact);
1194		replaceContactInConversation(contact.getJid(), contact);
1195	}
1196
1197	public void updateMessage(Message message) {
1198		databaseBackend.updateMessage(message);
1199	}
1200
1201	public void createContact(Contact contact) {
1202		SharedPreferences sharedPref = getPreferences();
1203		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1204		if (autoGrant) {
1205			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1206			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1207		}
1208		databaseBackend.createContact(contact);
1209		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1210		Element query = new Element("query");
1211		query.setAttribute("xmlns", "jabber:iq:roster");
1212		Element item = new Element("item");
1213		item.setAttribute("jid", contact.getJid());
1214		item.setAttribute("name", contact.getJid());
1215		query.addChild(item);
1216		iq.addChild(query);
1217		Account account = contact.getAccount();
1218		account.getXmppConnection().sendIqPacket(iq, null);
1219		if (autoGrant) {
1220			requestPresenceUpdatesFrom(contact);
1221		}
1222		replaceContactInConversation(contact.getJid(), contact);
1223	}
1224
1225	public void requestPresenceUpdatesFrom(Contact contact) {
1226		// Requesting a Subscription type=subscribe
1227		PresencePacket packet = new PresencePacket();
1228		packet.setAttribute("type", "subscribe");
1229		packet.setAttribute("to", contact.getJid());
1230		packet.setAttribute("from", contact.getAccount().getJid());
1231		Log.d(LOGTAG, packet.toString());
1232		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1233	}
1234
1235	public void stopPresenceUpdatesFrom(Contact contact) {
1236		// Unsubscribing type='unsubscribe'
1237		PresencePacket packet = new PresencePacket();
1238		packet.setAttribute("type", "unsubscribe");
1239		packet.setAttribute("to", contact.getJid());
1240		packet.setAttribute("from", contact.getAccount().getJid());
1241		Log.d(LOGTAG, packet.toString());
1242		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1243	}
1244
1245	public void stopPresenceUpdatesTo(Contact contact) {
1246		// Canceling a Subscription type=unsubscribed
1247		PresencePacket packet = new PresencePacket();
1248		packet.setAttribute("type", "unsubscribed");
1249		packet.setAttribute("to", contact.getJid());
1250		packet.setAttribute("from", contact.getAccount().getJid());
1251		Log.d(LOGTAG, packet.toString());
1252		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1253	}
1254
1255	public void sendPresenceUpdatesTo(Contact contact) {
1256		// type='subscribed'
1257		PresencePacket packet = new PresencePacket();
1258		packet.setAttribute("type", "subscribed");
1259		packet.setAttribute("to", contact.getJid());
1260		packet.setAttribute("from", contact.getAccount().getJid());
1261		Log.d(LOGTAG, packet.toString());
1262		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1263	}
1264
1265	public void sendPgpPresence(Account account, String signature) {
1266		PresencePacket packet = new PresencePacket();
1267		packet.setAttribute("from", account.getFullJid());
1268		Element status = new Element("status");
1269		status.setContent("online");
1270		packet.addChild(status);
1271		Element x = new Element("x");
1272		x.setAttribute("xmlns", "jabber:x:signed");
1273		x.setContent(signature);
1274		packet.addChild(x);
1275		account.getXmppConnection().sendPresencePacket(packet);
1276	}
1277
1278	public void generatePgpAnnouncement(Account account)
1279			throws PgpEngine.UserInputRequiredException {
1280		if (account.getStatus() == Account.STATUS_ONLINE) {
1281			String signature = getPgpEngine().generateSignature("online");
1282			account.setKey("pgp_signature", signature);
1283			databaseBackend.updateAccount(account);
1284			sendPgpPresence(account, signature);
1285		}
1286	}
1287
1288	public void updateConversation(Conversation conversation) {
1289		this.databaseBackend.updateConversation(conversation);
1290	}
1291
1292	public Contact findContact(String uuid) {
1293		Contact contact = this.databaseBackend.getContact(uuid);
1294		if (contact!=null) {
1295			for (Account account : getAccounts()) {
1296				if (contact.getAccountUuid().equals(account.getUuid())) {
1297					contact.setAccount(account);
1298				}
1299			}
1300		}
1301		return contact;
1302	}
1303
1304	public void removeOnTLSExceptionReceivedListener() {
1305		this.tlsException = null;
1306	}
1307
1308	// TODO dont let thread sleep but schedule wake up
1309	public void reconnectAccount(final Account account, final boolean force) {
1310		new Thread(new Runnable() {
1311
1312			@Override
1313			public void run() {
1314				if (account.getXmppConnection() != null) {
1315					disconnect(account, force);
1316				}
1317				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1318					if (account.getXmppConnection() == null) {
1319						account.setXmppConnection(createConnection(account));
1320					}
1321					Thread thread = new Thread(account.getXmppConnection());
1322					thread.start();
1323					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1324				}
1325			}
1326		}).start();
1327	}
1328
1329	public void updateConversationInGui() {
1330		if (convChangedListener != null) {
1331			convChangedListener.onConversationListChanged();
1332		}
1333	}
1334
1335	public void sendConversationSubject(Conversation conversation,
1336			String subject) {
1337		MessagePacket packet = new MessagePacket();
1338		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1339		packet.setTo(conversation.getContactJid().split("/")[0]);
1340		Element subjectChild = new Element("subject");
1341		subjectChild.setContent(subject);
1342		packet.addChild(subjectChild);
1343		packet.setFrom(conversation.getAccount().getJid());
1344		Account account = conversation.getAccount();
1345		if (account.getStatus() == Account.STATUS_ONLINE) {
1346			account.getXmppConnection().sendMessagePacket(packet);
1347		}
1348	}
1349
1350	public void inviteToConference(Conversation conversation,
1351			List<Contact> contacts) {
1352		for (Contact contact : contacts) {
1353			MessagePacket packet = new MessagePacket();
1354			packet.setTo(conversation.getContactJid().split("/")[0]);
1355			packet.setFrom(conversation.getAccount().getFullJid());
1356			Element x = new Element("x");
1357			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1358			Element invite = new Element("invite");
1359			invite.setAttribute("to", contact.getJid());
1360			x.addChild(invite);
1361			packet.addChild(x);
1362			Log.d(LOGTAG, packet.toString());
1363			conversation.getAccount().getXmppConnection()
1364					.sendMessagePacket(packet);
1365		}
1366
1367	}
1368	
1369	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1370		boolean marked = false;
1371		for(Conversation conversation : getConversations()) {
1372			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1373				for(Message message : conversation.getMessages()) {
1374					if (message.getUuid().equals(uuid)) {
1375						markMessage(message, status);
1376						marked = true;
1377						break;
1378					}
1379				}
1380				break;
1381			}
1382		}
1383		return marked;
1384	}
1385	
1386	public void markMessage(Message message, int status) {
1387		message.setStatus(status);
1388		databaseBackend.updateMessage(message);
1389		if (convChangedListener!=null) {
1390			convChangedListener.onConversationListChanged();
1391		}
1392	}
1393	
1394	public SharedPreferences getPreferences() {
1395		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1396	}
1397}