XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.io.File;
   4import java.text.ParseException;
   5import java.text.SimpleDateFormat;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.Random;
  13
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  23import eu.siacs.conversations.entities.Account;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.utils.ExceptionHelper;
  37import eu.siacs.conversations.utils.MessageParser;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnJinglePacketReceived;
  45import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  46import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  47import eu.siacs.conversations.xmpp.OnStatusChanged;
  48import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  49import eu.siacs.conversations.xmpp.XmppConnection;
  50import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  51import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  52import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  53import eu.siacs.conversations.xmpp.stanzas.jingle.JinglePacket;
  54import android.app.AlarmManager;
  55import android.app.PendingIntent;
  56import android.app.Service;
  57import android.content.Context;
  58import android.content.Intent;
  59import android.content.SharedPreferences;
  60import android.database.ContentObserver;
  61import android.database.DatabaseUtils;
  62import android.net.ConnectivityManager;
  63import android.net.NetworkInfo;
  64import android.net.Uri;
  65import android.os.Binder;
  66import android.os.Bundle;
  67import android.os.IBinder;
  68import android.os.PowerManager;
  69import android.os.PowerManager.WakeLock;
  70import android.os.SystemClock;
  71import android.preference.PreferenceManager;
  72import android.provider.ContactsContract;
  73import android.util.Log;
  74
  75public class XmppConnectionService extends Service {
  76
  77	protected static final String LOGTAG = "xmppService";
  78	public DatabaseBackend databaseBackend;
  79	private FileBackend fileBackend;
  80
  81	public long startDate;
  82
  83	private static final int PING_MAX_INTERVAL = 300;
  84	private static final int PING_MIN_INTERVAL = 10;
  85	private static final int PING_TIMEOUT = 5;
  86	private static final int CONNECT_TIMEOUT = 60;
  87
  88	private List<Account> accounts;
  89	private List<Conversation> conversations = null;
  90
  91	public OnConversationListChangedListener convChangedListener = null;
  92	private int convChangedListenerCount = 0;
  93	private OnAccountListChangedListener accountChangedListener = null;
  94	private OnTLSExceptionReceived tlsException = null;
  95
  96	public void setOnTLSExceptionReceivedListener(
  97			OnTLSExceptionReceived listener) {
  98		tlsException = listener;
  99	}
 100
 101	private Random mRandom = new Random(System.currentTimeMillis());
 102
 103	private ContentObserver contactObserver = new ContentObserver(null) {
 104		@Override
 105		public void onChange(boolean selfChange) {
 106			super.onChange(selfChange);
 107			Log.d(LOGTAG, "contact list has changed");
 108			mergePhoneContactsWithRoster(null);
 109		}
 110	};
 111
 112	private XmppConnectionService service = this;
 113
 114	private final IBinder mBinder = new XmppConnectionBinder();
 115	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 116
 117		@Override
 118		public void onMessagePacketReceived(Account account,
 119				MessagePacket packet) {
 120			Message message = null;
 121			boolean notify = true;
 122			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 123				String pgpBody = MessageParser.getPgpBody(packet);
 124				if (pgpBody != null) {
 125					message = MessageParser.parsePgpChat(pgpBody, packet,
 126							account, service);
 127					message.markUnread();
 128				} else if (packet.hasChild("body")
 129						&& (packet.getBody().startsWith("?OTR"))) {
 130					message = MessageParser.parseOtrChat(packet, account,
 131							service);
 132					if (message != null) {
 133						message.markUnread();
 134					}
 135				} else if (packet.hasChild("body")) {
 136					message = MessageParser.parsePlainTextChat(packet, account,
 137							service);
 138					message.markUnread();
 139				} else if (packet.hasChild("received")
 140						|| (packet.hasChild("sent"))) {
 141					message = MessageParser.parseCarbonMessage(packet, account,
 142							service);
 143					if (message != null) {
 144						if (message.getStatus() == Message.STATUS_SEND) {
 145							notify = false;
 146							message.getConversation().markRead();
 147						} else {
 148							message.markUnread();
 149						}
 150					}
 151				}
 152
 153			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 154				message = MessageParser
 155						.parseGroupchat(packet, account, service);
 156				if (message != null) {
 157					if (message.getStatus() == Message.STATUS_RECIEVED) {
 158						message.markUnread();
 159					} else {
 160						message.getConversation().markRead();
 161						notify = false;
 162					}
 163				}
 164			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 165				message = MessageParser.parseError(packet, account, service);
 166			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 167				if (packet.hasChild("x")) {
 168					Element x = packet.findChild("x");
 169					if (x.hasChild("invite")) {
 170						findOrCreateConversation(account, packet.getFrom(),
 171								true);
 172						if (convChangedListener != null) {
 173							convChangedListener.onConversationListChanged();
 174						}
 175						Log.d(LOGTAG,
 176								"invitation received to " + packet.getFrom());
 177					}
 178
 179				} else {
 180					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 181				}
 182			}
 183			if ((message == null) || (message.getBody() == null)) {
 184				return;
 185			}
 186			if (packet.hasChild("delay")) {
 187				try {
 188					String stamp = packet.findChild("delay").getAttribute(
 189							"stamp");
 190					stamp = stamp.replace("Z", "+0000");
 191					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 192							.parse(stamp);
 193					message.setTime(date.getTime());
 194				} catch (ParseException e) {
 195					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 196				}
 197			}
 198			Conversation conversation = message.getConversation();
 199			conversation.getMessages().add(message);
 200			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 201				databaseBackend.createMessage(message);
 202			}
 203			if (convChangedListener != null) {
 204				convChangedListener.onConversationListChanged();
 205			} else {
 206				UIHelper.updateNotification(getApplicationContext(),
 207						getConversations(), message.getConversation(), notify);
 208			}
 209		}
 210	};
 211	private OnStatusChanged statusListener = new OnStatusChanged() {
 212
 213		@Override
 214		public void onStatusChanged(Account account) {
 215			if (accountChangedListener != null) {
 216				accountChangedListener.onAccountListChangedListener();
 217			}
 218			if (account.getStatus() == Account.STATUS_ONLINE) {
 219				List<Conversation> conversations = getConversations();
 220				for (int i = 0; i < conversations.size(); ++i) {
 221					if (conversations.get(i).getAccount() == account) {
 222						sendUnsendMessages(conversations.get(i));
 223					}
 224				}
 225				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 226			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 227				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 228					int timeToReconnect = mRandom.nextInt(50) + 10;
 229					scheduleWakeupCall(timeToReconnect, false);
 230				}
 231
 232			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 233				databaseBackend.updateAccount(account);
 234				reconnectAccount(account, true);
 235			} else {
 236				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 237			}
 238		}
 239	};
 240
 241	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 242
 243		@Override
 244		public void onPresencePacketReceived(Account account,
 245				PresencePacket packet) {
 246			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 247				Conversation muc = findMuc(
 248						packet.getAttribute("from").split("/")[0], account);
 249				if (muc != null) {
 250					muc.getMucOptions().processPacket(packet);
 251				} else {
 252					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 253				}
 254			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 255				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 256				if (muc != null) {
 257					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 258					int error = muc.getMucOptions().getError();
 259					muc.getMucOptions().processPacket(packet);
 260					if ((muc.getMucOptions().getError() != error)
 261							&& (convChangedListener != null)) {
 262						Log.d(LOGTAG, "muc error status changed");
 263						convChangedListener.onConversationListChanged();
 264					}
 265				}
 266			} else {
 267				String[] fromParts = packet.getAttribute("from").split("/");
 268				String type = packet.getAttribute("type");
 269				if (fromParts[0].equals(account.getJid())) {
 270					if (fromParts.length==2) {
 271						if (type == null) {
 272							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 273						} else if (type.equals("unavailable")) {
 274							account.removePresence(fromParts[1]);
 275						}
 276					}
 277						
 278				} else {
 279					Contact contact = findContact(account, fromParts[0]);
 280					if (contact == null) {
 281						// most likely roster not synced
 282						return;
 283					}
 284					if (type == null) {
 285						if (fromParts.length == 2) {
 286							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 287							PgpEngine pgp = getPgpEngine();
 288							if (pgp != null) {
 289								Element x = packet.findChild("x","jabber:x:signed");
 290								if (x != null) {
 291									try {
 292										Element status = packet.findChild("status");
 293										String msg;
 294										if (status!=null) {
 295											msg = status.getContent();
 296										} else {
 297											msg = "";
 298										}
 299										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 300														.getContent()));
 301									} catch (OpenPgpException e) {
 302										Log.d(LOGTAG, "faulty pgp. just ignore");
 303									}
 304								}
 305							}
 306							databaseBackend.updateContact(contact);
 307						} else {
 308							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 309						}
 310					} else if (type.equals("unavailable")) {
 311						if (fromParts.length != 2) {
 312							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 313						} else {
 314							contact.removePresence(fromParts[1]);
 315							databaseBackend.updateContact(contact);
 316						}
 317					} else if (type.equals("subscribe")) {
 318						if (contact
 319								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 320							sendPresenceUpdatesTo(contact);
 321							contact.setSubscriptionOption(Contact.Subscription.FROM);
 322							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 323							replaceContactInConversation(contact.getJid(),
 324									contact);
 325							databaseBackend.updateContact(contact);
 326							if ((contact
 327									.getSubscriptionOption(Contact.Subscription.ASKING))
 328									&& (!contact
 329											.getSubscriptionOption(Contact.Subscription.TO))) {
 330								requestPresenceUpdatesFrom(contact);
 331							}
 332						} else {
 333							// TODO: ask user to handle it maybe
 334						}
 335					} else {
 336						//Log.d(LOGTAG, packet.toString());
 337					}
 338					replaceContactInConversation(contact.getJid(), contact);
 339				}
 340			}
 341		}
 342	};
 343
 344	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 345
 346		@Override
 347		public void onIqPacketReceived(Account account, IqPacket packet) {
 348			if (packet.hasChild("query")) {
 349				Element query = packet.findChild("query");
 350				String xmlns = query.getAttribute("xmlns");
 351				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 352					processRosterItems(account, query);
 353					mergePhoneContactsWithRoster(null);
 354				}
 355			}
 356		}
 357	};
 358	
 359	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 360		
 361		@Override
 362		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 363			Log.d(LOGTAG,account.getJid()+": jingle packet received"+packet.toString());
 364		}
 365	};
 366
 367	private OpenPgpServiceConnection pgpServiceConnection;
 368	private PgpEngine mPgpEngine = null;
 369	private Intent pingIntent;
 370	private PendingIntent pendingPingIntent = null;
 371	private WakeLock wakeLock;
 372	private PowerManager pm;
 373
 374	public PgpEngine getPgpEngine() {
 375		if (pgpServiceConnection.isBound()) {
 376			if (this.mPgpEngine == null) {
 377				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 378						getApplicationContext(),
 379						pgpServiceConnection.getService()));
 380			}
 381			return mPgpEngine;
 382		} else {
 383			return null;
 384		}
 385
 386	}
 387
 388	public FileBackend getFileBackend() {
 389		return this.fileBackend;
 390	}
 391	
 392	public void attachImageToConversation(Conversation conversation, Uri uri) {
 393		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 394		message.setType(Message.TYPE_IMAGE);
 395		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 396		Log.d(LOGTAG,"new file"+file.getAbsolutePath());
 397		conversation.getMessages().add(message);
 398		databaseBackend.createMessage(message);
 399	}
 400	
 401	
 402	protected Conversation findMuc(String name, Account account) {
 403		for (Conversation conversation : this.conversations) {
 404			if (conversation.getContactJid().split("/")[0].equals(name)
 405					&& (conversation.getAccount() == account)) {
 406				return conversation;
 407			}
 408		}
 409		return null;
 410	}
 411
 412	private void processRosterItems(Account account, Element elements) {
 413		String version = elements.getAttribute("ver");
 414		if (version != null) {
 415			account.setRosterVersion(version);
 416			databaseBackend.updateAccount(account);
 417		}
 418		for (Element item : elements.getChildren()) {
 419			if (item.getName().equals("item")) {
 420				String jid = item.getAttribute("jid");
 421				String subscription = item.getAttribute("subscription");
 422				Contact contact = databaseBackend.findContact(account, jid);
 423				if (contact == null) {
 424					if (!subscription.equals("remove")) {
 425						String name = item.getAttribute("name");
 426						if (name == null) {
 427							name = jid.split("@")[0];
 428						}
 429						contact = new Contact(account, name, jid, null);
 430						contact.parseSubscriptionFromElement(item);
 431						databaseBackend.createContact(contact);
 432					}
 433				} else {
 434					if (subscription.equals("remove")) {
 435						databaseBackend.deleteContact(contact);
 436						replaceContactInConversation(contact.getJid(), null);
 437					} else {
 438						contact.parseSubscriptionFromElement(item);
 439						databaseBackend.updateContact(contact);
 440						replaceContactInConversation(contact.getJid(), contact);
 441					}
 442				}
 443			}
 444		}
 445	}
 446
 447	private void replaceContactInConversation(String jid, Contact contact) {
 448		List<Conversation> conversations = getConversations();
 449		for (int i = 0; i < conversations.size(); ++i) {
 450			if ((conversations.get(i).getContactJid().equals(jid))) {
 451				conversations.get(i).setContact(contact);
 452				break;
 453			}
 454		}
 455	}
 456
 457	public class XmppConnectionBinder extends Binder {
 458		public XmppConnectionService getService() {
 459			return XmppConnectionService.this;
 460		}
 461	}
 462
 463	@Override
 464	public int onStartCommand(Intent intent, int flags, int startId) {
 465		this.wakeLock.acquire();
 466		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 467		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 468				.getSystemService(Context.CONNECTIVITY_SERVICE);
 469		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 470		boolean isConnected = activeNetwork != null
 471				&& activeNetwork.isConnected();
 472
 473		for (Account account : accounts) {
 474			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 475				if (!isConnected) {
 476					account.setStatus(Account.STATUS_NO_INTERNET);
 477					if (statusListener != null) {
 478						statusListener.onStatusChanged(account);
 479					}
 480				} else {
 481					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 482						account.setStatus(Account.STATUS_OFFLINE);
 483						if (statusListener != null) {
 484							statusListener.onStatusChanged(account);
 485						}
 486					}
 487
 488					// TODO 3 remaining cases
 489					if (account.getStatus() == Account.STATUS_ONLINE) {
 490						long lastReceived = account.getXmppConnection().lastPaketReceived;
 491						long lastSent = account.getXmppConnection().lastPingSent;
 492						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 493							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 494							this.reconnectAccount(account, true);
 495						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 496							account.getXmppConnection().sendPing();
 497							account.getXmppConnection().lastPingSent = SystemClock
 498									.elapsedRealtime();
 499							this.scheduleWakeupCall(2, false);
 500						}
 501					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 502						if (account.getXmppConnection() == null) {
 503							account.setXmppConnection(this
 504									.createConnection(account));
 505						}
 506						account.getXmppConnection().lastPingSent = SystemClock
 507								.elapsedRealtime();
 508						new Thread(account.getXmppConnection()).start();
 509					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 510							&& ((SystemClock.elapsedRealtime() - account
 511									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 512						Log.d(LOGTAG, account.getJid()
 513								+ ": time out during connect reconnecting");
 514						reconnectAccount(account, true);
 515					} else {
 516						Log.d(LOGTAG,
 517								"seconds since last connect:"
 518										+ ((SystemClock.elapsedRealtime() - account
 519												.getXmppConnection().lastConnect) / 1000));
 520						Log.d(LOGTAG,
 521								account.getJid() + ": status="
 522										+ account.getStatus());
 523						// TODO notify user of ssl cert problem or auth problem
 524						// or what ever
 525					}
 526					// in any case. reschedule wakup call
 527					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 528				}
 529				if (accountChangedListener != null) {
 530					accountChangedListener.onAccountListChangedListener();
 531				}
 532			}
 533		}
 534		if (wakeLock.isHeld()) {
 535			wakeLock.release();
 536		}
 537		return START_STICKY;
 538	}
 539
 540	@Override
 541	public void onCreate() {
 542		ExceptionHelper.init(getApplicationContext());
 543		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 544		this.fileBackend = new FileBackend(getApplicationContext());
 545		this.accounts = databaseBackend.getAccounts();
 546
 547		this.getConversations();
 548		
 549		getContentResolver().registerContentObserver(
 550				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 551		this.pgpServiceConnection = new OpenPgpServiceConnection(
 552				getApplicationContext(), "org.sufficientlysecure.keychain");
 553		this.pgpServiceConnection.bindToService();
 554
 555		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 556		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 557				"XmppConnectionService");
 558	}
 559
 560	@Override
 561	public void onDestroy() {
 562		super.onDestroy();
 563		for (Account account : accounts) {
 564			if (account.getXmppConnection() != null) {
 565				disconnect(account, true);
 566			}
 567		}
 568	}
 569
 570	protected void scheduleWakeupCall(int seconds, boolean ping) {
 571		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 572		Context context = getApplicationContext();
 573		AlarmManager alarmManager = (AlarmManager) context
 574				.getSystemService(Context.ALARM_SERVICE);
 575
 576		if (ping) {
 577			if (this.pingIntent == null) {
 578				this.pingIntent = new Intent(context, EventReceiver.class);
 579				this.pingIntent.setAction("ping");
 580				this.pingIntent.putExtra("time", timeToWake);
 581				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 582						this.pingIntent, 0);
 583				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 584						timeToWake, pendingPingIntent);
 585				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 586			} else {
 587				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 588				if (scheduledTime < SystemClock.elapsedRealtime()
 589						|| (scheduledTime > timeToWake)) {
 590					this.pingIntent.putExtra("time", timeToWake);
 591					alarmManager.cancel(this.pendingPingIntent);
 592					this.pendingPingIntent = PendingIntent.getBroadcast(
 593							context, 0, this.pingIntent, 0);
 594					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 595							timeToWake, pendingPingIntent);
 596					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 597				}
 598			}
 599		} else {
 600			Intent intent = new Intent(context, EventReceiver.class);
 601			intent.setAction("ping_check");
 602			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 603					intent, 0);
 604			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 605					alarmIntent);
 606		}
 607
 608	}
 609
 610	public XmppConnection createConnection(Account account) {
 611		SharedPreferences sharedPref = PreferenceManager
 612				.getDefaultSharedPreferences(getApplicationContext());
 613		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 614		XmppConnection connection = new XmppConnection(account, this.pm);
 615		connection.setOnMessagePacketReceivedListener(this.messageListener);
 616		connection.setOnStatusChangedListener(this.statusListener);
 617		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 618		connection
 619				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 620		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 621		connection
 622				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 623
 624					@Override
 625					public void onTLSExceptionReceived(String fingerprint,
 626							Account account) {
 627						Log.d(LOGTAG, "tls exception arrived in service");
 628						if (tlsException != null) {
 629							tlsException.onTLSExceptionReceived(fingerprint,
 630									account);
 631						}
 632					}
 633				});
 634		connection.setOnBindListener(new OnBindListener() {
 635
 636			@Override
 637			public void onBind(Account account) {
 638				databaseBackend.clearPresences(account);
 639				account.clearPresences(); // self presences
 640				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 641					updateRoster(account, null);
 642				}
 643				connectMultiModeConversations(account);
 644				if (convChangedListener != null) {
 645					convChangedListener.onConversationListChanged();
 646				}
 647			}
 648		});
 649		return connection;
 650	}
 651
 652	synchronized public void sendMessage(Message message, String presence) {
 653		Account account = message.getConversation().getAccount();
 654		Conversation conv = message.getConversation();
 655		boolean saveInDb = false;
 656		boolean addToConversation = false;
 657		if (account.getStatus() == Account.STATUS_ONLINE) {
 658			MessagePacket packet;
 659			if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 660				if (!conv.hasValidOtrSession()) {
 661					// starting otr session. messages will be send later
 662					conv.startOtrSession(getApplicationContext(), presence,true);
 663				} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 664					// otr session aleary exists, creating message packet
 665					// accordingly
 666					packet = prepareMessagePacket(account, message,
 667							conv.getOtrSession());
 668					account.getXmppConnection().sendMessagePacket(packet);
 669					message.setStatus(Message.STATUS_SEND);
 670				}
 671				saveInDb = true;
 672				addToConversation = true;
 673			} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 674				message.getConversation().endOtrIfNeeded();
 675				long keyId = message.getConversation().getContact()
 676						.getPgpKeyId();
 677				packet = new MessagePacket();
 678				packet.setType(MessagePacket.TYPE_CHAT);
 679				packet.setFrom(message.getConversation().getAccount()
 680						.getFullJid());
 681				packet.setTo(message.getCounterpart());
 682				packet.setBody("This is an XEP-0027 encryted message");
 683				packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 684				account.getXmppConnection().sendMessagePacket(packet);
 685				message.setStatus(Message.STATUS_SEND);
 686				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 687				saveInDb = true;
 688				addToConversation = true;
 689			} else {
 690				message.getConversation().endOtrIfNeeded();
 691				// don't encrypt
 692				if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 693					message.setStatus(Message.STATUS_SEND);
 694					saveInDb = true;
 695					addToConversation = true;
 696				}
 697
 698				packet = prepareMessagePacket(account, message, null);
 699				account.getXmppConnection().sendMessagePacket(packet);
 700			}
 701		} else {
 702			// account is offline
 703			saveInDb = true;
 704			addToConversation = true;
 705
 706		}
 707		if (saveInDb) {
 708			databaseBackend.createMessage(message);
 709		}
 710		if (addToConversation) {
 711			conv.getMessages().add(message);
 712			if (convChangedListener != null) {
 713				convChangedListener.onConversationListChanged();
 714			}
 715		}
 716
 717	}
 718
 719	private void sendUnsendMessages(Conversation conversation) {
 720		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 721			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 722				Message message = conversation.getMessages().get(i);
 723				MessagePacket packet = prepareMessagePacket(
 724						conversation.getAccount(), message, null);
 725				conversation.getAccount().getXmppConnection()
 726						.sendMessagePacket(packet);
 727				message.setStatus(Message.STATUS_SEND);
 728				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 729					databaseBackend.updateMessage(message);
 730				} else {
 731					databaseBackend.deleteMessage(message);
 732					conversation.getMessages().remove(i);
 733					i--;
 734				}
 735			}
 736		}
 737	}
 738
 739	public MessagePacket prepareMessagePacket(Account account, Message message,
 740			Session otrSession) {
 741		MessagePacket packet = new MessagePacket();
 742		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 743			packet.setType(MessagePacket.TYPE_CHAT);
 744			if (otrSession != null) {
 745				try {
 746					packet.setBody(otrSession.transformSending(message
 747							.getBody()));
 748				} catch (OtrException e) {
 749					Log.d(LOGTAG,
 750							account.getJid()
 751									+ ": could not encrypt message to "
 752									+ message.getCounterpart());
 753				}
 754				packet.addChild("private","urn:xmpp:carbons:2");
 755				packet.addChild("no-copy","urn:xmpp:hints");
 756				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 757						+ otrSession.getSessionID().getUserID());
 758				packet.setFrom(account.getFullJid());
 759			} else {
 760				packet.setBody(message.getBody());
 761				packet.setTo(message.getCounterpart());
 762				packet.setFrom(account.getJid());
 763			}
 764		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 765			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 766			packet.setBody(message.getBody());
 767			packet.setTo(message.getCounterpart().split("/")[0]);
 768			packet.setFrom(account.getJid());
 769		}
 770		return packet;
 771	}
 772
 773	private void getRoster(Account account,
 774			final OnRosterFetchedListener listener) {
 775		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 776		for (int i = 0; i < contacts.size(); ++i) {
 777			contacts.get(i).setAccount(account);
 778		}
 779		if (listener != null) {
 780			listener.onRosterFetched(contacts);
 781		}
 782	}
 783
 784	public List<Contact> getRoster(Account account) {
 785		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 786		for (int i = 0; i < contacts.size(); ++i) {
 787			contacts.get(i).setAccount(account);
 788		}
 789		return contacts;
 790	}
 791
 792	public void updateRoster(final Account account,
 793			final OnRosterFetchedListener listener) {
 794		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 795		if (!"".equals(account.getRosterVersion())) {
 796			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 797					+ account.getRosterVersion());
 798		} else {
 799			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 800		}
 801		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 802		account.getXmppConnection().sendIqPacket(iqPacket,
 803				new OnIqPacketReceived() {
 804
 805					@Override
 806					public void onIqPacketReceived(final Account account,
 807							IqPacket packet) {
 808						Element roster = packet.findChild("query");
 809						if (roster != null) {
 810							Log.d(LOGTAG, account.getJid()
 811									+ ": processing roster");
 812							processRosterItems(account, roster);
 813							StringBuilder mWhere = new StringBuilder();
 814							mWhere.append("jid NOT IN(");
 815							List<Element> items = roster.getChildren();
 816							for (int i = 0; i < items.size(); ++i) {
 817								mWhere.append(DatabaseUtils
 818										.sqlEscapeString(items.get(i)
 819												.getAttribute("jid")));
 820								if (i != items.size() - 1) {
 821									mWhere.append(",");
 822								}
 823							}
 824							mWhere.append(") and accountUuid = \"");
 825							mWhere.append(account.getUuid());
 826							mWhere.append("\"");
 827							List<Contact> contactsToDelete = databaseBackend
 828									.getContacts(mWhere.toString());
 829							for (Contact contact : contactsToDelete) {
 830								databaseBackend.deleteContact(contact);
 831								replaceContactInConversation(contact.getJid(),
 832										null);
 833							}
 834
 835						} else {
 836							Log.d(LOGTAG, account.getJid()
 837									+ ": empty roster returend");
 838						}
 839						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 840
 841							@Override
 842							public void phoneContactsMerged() {
 843								if (listener != null) {
 844									getRoster(account, listener);
 845								}
 846							}
 847						});
 848					}
 849				});
 850	}
 851
 852	public void mergePhoneContactsWithRoster(
 853			final OnPhoneContactsMerged listener) {
 854		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 855				new OnPhoneContactsLoadedListener() {
 856					@Override
 857					public void onPhoneContactsLoaded(
 858							Hashtable<String, Bundle> phoneContacts) {
 859						List<Contact> contacts = databaseBackend
 860								.getContactsByAccount(null);
 861						for (int i = 0; i < contacts.size(); ++i) {
 862							Contact contact = contacts.get(i);
 863							if (phoneContacts.containsKey(contact.getJid())) {
 864								Bundle phoneContact = phoneContacts.get(contact
 865										.getJid());
 866								String systemAccount = phoneContact
 867										.getInt("phoneid")
 868										+ "#"
 869										+ phoneContact.getString("lookup");
 870								contact.setSystemAccount(systemAccount);
 871								contact.setPhotoUri(phoneContact
 872										.getString("photouri"));
 873								contact.setDisplayName(phoneContact
 874										.getString("displayname"));
 875								databaseBackend.updateContact(contact);
 876								replaceContactInConversation(contact.getJid(),
 877										contact);
 878							} else {
 879								if ((contact.getSystemAccount() != null)
 880										|| (contact.getProfilePhoto() != null)) {
 881									contact.setSystemAccount(null);
 882									contact.setPhotoUri(null);
 883									databaseBackend.updateContact(contact);
 884									replaceContactInConversation(
 885											contact.getJid(), contact);
 886								}
 887							}
 888						}
 889						if (listener != null) {
 890							listener.phoneContactsMerged();
 891						}
 892					}
 893				});
 894	}
 895
 896	public List<Conversation> getConversations() {
 897		if (this.conversations == null) {
 898			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 899			for (Account account : this.accounts) {
 900				accountLookupTable.put(account.getUuid(), account);
 901			}
 902			this.conversations = databaseBackend
 903					.getConversations(Conversation.STATUS_AVAILABLE);
 904			for (Conversation conv : this.conversations) {
 905				Account account = accountLookupTable.get(conv.getAccountUuid());
 906				conv.setAccount(account);
 907				conv.setContact(findContact(account, conv.getContactJid()));
 908				conv.setMessages(databaseBackend.getMessages(conv, 50));
 909			}
 910		}
 911		Collections.sort(this.conversations, new Comparator<Conversation>() {
 912			@Override
 913			public int compare(Conversation lhs, Conversation rhs) {
 914				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 915						.getLatestMessage().getTimeSent());
 916			}
 917		});
 918		return this.conversations;
 919	}
 920
 921	public List<Account> getAccounts() {
 922		return this.accounts;
 923	}
 924
 925	public Contact findContact(Account account, String jid) {
 926		Contact contact = databaseBackend.findContact(account, jid);
 927		if (contact != null) {
 928			contact.setAccount(account);
 929		}
 930		return contact;
 931	}
 932
 933	public Conversation findOrCreateConversation(Account account, String jid,
 934			boolean muc) {
 935		for (Conversation conv : this.getConversations()) {
 936			if ((conv.getAccount().equals(account))
 937					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 938				return conv;
 939			}
 940		}
 941		Conversation conversation = databaseBackend.findConversation(account,
 942				jid);
 943		if (conversation != null) {
 944			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 945			conversation.setAccount(account);
 946			if (muc) {
 947				conversation.setMode(Conversation.MODE_MULTI);
 948			} else {
 949				conversation.setMode(Conversation.MODE_SINGLE);
 950			}
 951			conversation.setMessages(databaseBackend.getMessages(conversation,
 952					50));
 953			this.databaseBackend.updateConversation(conversation);
 954			conversation.setContact(findContact(account,
 955					conversation.getContactJid()));
 956		} else {
 957			String conversationName;
 958			Contact contact = findContact(account, jid);
 959			if (contact != null) {
 960				conversationName = contact.getDisplayName();
 961			} else {
 962				conversationName = jid.split("@")[0];
 963			}
 964			if (muc) {
 965				conversation = new Conversation(conversationName, account, jid,
 966						Conversation.MODE_MULTI);
 967			} else {
 968				conversation = new Conversation(conversationName, account, jid,
 969						Conversation.MODE_SINGLE);
 970			}
 971			conversation.setContact(contact);
 972			this.databaseBackend.createConversation(conversation);
 973		}
 974		this.conversations.add(conversation);
 975		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
 976			joinMuc(conversation);
 977		}
 978		if (this.convChangedListener != null) {
 979			this.convChangedListener.onConversationListChanged();
 980		}
 981		return conversation;
 982	}
 983
 984	public void archiveConversation(Conversation conversation) {
 985		if (conversation.getMode() == Conversation.MODE_MULTI) {
 986			leaveMuc(conversation);
 987		} else {
 988			conversation.endOtrIfNeeded();
 989		}
 990		this.databaseBackend.updateConversation(conversation);
 991		this.conversations.remove(conversation);
 992		if (this.convChangedListener != null) {
 993			this.convChangedListener.onConversationListChanged();
 994		}
 995	}
 996
 997	public int getConversationCount() {
 998		return this.databaseBackend.getConversationCount();
 999	}
1000
1001	public void createAccount(Account account) {
1002		databaseBackend.createAccount(account);
1003		this.accounts.add(account);
1004		this.reconnectAccount(account, false);
1005		if (accountChangedListener != null)
1006			accountChangedListener.onAccountListChangedListener();
1007	}
1008
1009	public void deleteContact(Contact contact) {
1010		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1011		Element query = iq.query("jabber:iq:roster");
1012		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1013		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1014		replaceContactInConversation(contact.getJid(), null);
1015		databaseBackend.deleteContact(contact);
1016	}
1017
1018	public void updateAccount(Account account) {
1019		this.statusListener.onStatusChanged(account);
1020		databaseBackend.updateAccount(account);
1021		reconnectAccount(account, false);
1022		if (accountChangedListener != null)
1023			accountChangedListener.onAccountListChangedListener();
1024	}
1025
1026	public void deleteAccount(Account account) {
1027		if (account.getXmppConnection() != null) {
1028			this.disconnect(account, true);
1029		}
1030		databaseBackend.deleteAccount(account);
1031		this.accounts.remove(account);
1032		if (accountChangedListener != null)
1033			accountChangedListener.onAccountListChangedListener();
1034	}
1035
1036	public void setOnConversationListChangedListener(
1037			OnConversationListChangedListener listener) {
1038		this.convChangedListener = listener;
1039		this.convChangedListenerCount++;
1040		Log.d(LOGTAG,"registered on conv changed in backend ("+convChangedListenerCount+")");
1041	}
1042
1043	public void removeOnConversationListChangedListener() {
1044		this.convChangedListenerCount--;
1045		Log.d(LOGTAG,"someone on conv changed listener removed listener ("+convChangedListenerCount+")");
1046		if (this.convChangedListenerCount==0) {
1047			this.convChangedListener = null;
1048		}
1049	}
1050
1051	public void setOnAccountListChangedListener(
1052			OnAccountListChangedListener listener) {
1053		this.accountChangedListener = listener;
1054	}
1055
1056	public void removeOnAccountListChangedListener() {
1057		this.accountChangedListener = null;
1058	}
1059
1060	public void connectMultiModeConversations(Account account) {
1061		List<Conversation> conversations = getConversations();
1062		for (int i = 0; i < conversations.size(); i++) {
1063			Conversation conversation = conversations.get(i);
1064			if ((conversation.getMode() == Conversation.MODE_MULTI)
1065					&& (conversation.getAccount() == account)) {
1066				joinMuc(conversation);
1067			}
1068		}
1069	}
1070
1071	public void joinMuc(Conversation conversation) {
1072		String[] mucParts = conversation.getContactJid().split("/");
1073		String muc;
1074		String nick;
1075		if (mucParts.length == 2) {
1076			muc = mucParts[0];
1077			nick = mucParts[1];
1078		} else {
1079			muc = mucParts[0];
1080			nick = conversation.getAccount().getUsername();
1081		}
1082		PresencePacket packet = new PresencePacket();
1083		packet.setAttribute("to", muc + "/" + nick);
1084		Element x = new Element("x");
1085		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1086		if (conversation.getMessages().size() != 0) {
1087			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1088			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1089			x.addChild("history").setAttribute("seconds", diff + "");
1090		}
1091		packet.addChild(x);
1092		conversation.getAccount().getXmppConnection()
1093				.sendPresencePacket(packet);
1094	}
1095
1096	private OnRenameListener renameListener = null;
1097
1098	public void setOnRenameListener(OnRenameListener listener) {
1099		this.renameListener = listener;
1100	}
1101
1102	public void renameInMuc(final Conversation conversation, final String nick) {
1103		final MucOptions options = conversation.getMucOptions();
1104		if (options.online()) {
1105			options.setOnRenameListener(new OnRenameListener() {
1106
1107				@Override
1108				public void onRename(boolean success) {
1109					if (renameListener != null) {
1110						renameListener.onRename(success);
1111					}
1112					if (success) {
1113						databaseBackend.updateConversation(conversation);
1114					}
1115				}
1116			});
1117			options.flagAboutToRename();
1118			PresencePacket packet = new PresencePacket();
1119			packet.setAttribute("to",
1120					conversation.getContactJid().split("/")[0] + "/" + nick);
1121			packet.setAttribute("from", conversation.getAccount().getFullJid());
1122
1123			conversation.getAccount().getXmppConnection()
1124					.sendPresencePacket(packet, null);
1125		} else {
1126			String jid = conversation.getContactJid().split("/")[0] + "/"
1127					+ nick;
1128			conversation.setContactJid(jid);
1129			databaseBackend.updateConversation(conversation);
1130			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1131				joinMuc(conversation);
1132			}
1133		}
1134	}
1135
1136	public void leaveMuc(Conversation conversation) {
1137		PresencePacket packet = new PresencePacket();
1138		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1139		packet.setAttribute("from", conversation.getAccount().getFullJid());
1140		packet.setAttribute("type", "unavailable");
1141		Log.d(LOGTAG,"send leaving muc " + packet);
1142		conversation.getAccount().getXmppConnection()
1143				.sendPresencePacket(packet);
1144		conversation.getMucOptions().setOffline();
1145	}
1146
1147	public void disconnect(Account account, boolean force) {
1148		if ((account.getStatus() == Account.STATUS_ONLINE)
1149				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1150			if (!force) {
1151				List<Conversation> conversations = getConversations();
1152				for (int i = 0; i < conversations.size(); i++) {
1153					Conversation conversation = conversations.get(i);
1154					if (conversation.getAccount() == account) {
1155						if (conversation.getMode() == Conversation.MODE_MULTI) {
1156							leaveMuc(conversation);
1157						} else {
1158							conversation.endOtrIfNeeded();
1159						}
1160					}
1161				}
1162			}
1163			account.getXmppConnection().disconnect(force);
1164		}
1165	}
1166
1167	@Override
1168	public IBinder onBind(Intent intent) {
1169		return mBinder;
1170	}
1171
1172	public void updateContact(Contact contact) {
1173		databaseBackend.updateContact(contact);
1174		replaceContactInConversation(contact.getJid(), contact);
1175	}
1176
1177	public void updateMessage(Message message) {
1178		databaseBackend.updateMessage(message);
1179	}
1180
1181	public void createContact(Contact contact) {
1182		SharedPreferences sharedPref = PreferenceManager
1183				.getDefaultSharedPreferences(getApplicationContext());
1184		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1185		if (autoGrant) {
1186			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1187			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1188		}
1189		databaseBackend.createContact(contact);
1190		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1191		Element query = new Element("query");
1192		query.setAttribute("xmlns", "jabber:iq:roster");
1193		Element item = new Element("item");
1194		item.setAttribute("jid", contact.getJid());
1195		item.setAttribute("name", contact.getJid());
1196		query.addChild(item);
1197		iq.addChild(query);
1198		Account account = contact.getAccount();
1199		account.getXmppConnection().sendIqPacket(iq, null);
1200		if (autoGrant) {
1201			requestPresenceUpdatesFrom(contact);
1202		}
1203		replaceContactInConversation(contact.getJid(), contact);
1204	}
1205
1206	public void requestPresenceUpdatesFrom(Contact contact) {
1207		// Requesting a Subscription type=subscribe
1208		PresencePacket packet = new PresencePacket();
1209		packet.setAttribute("type", "subscribe");
1210		packet.setAttribute("to", contact.getJid());
1211		packet.setAttribute("from", contact.getAccount().getJid());
1212		Log.d(LOGTAG, packet.toString());
1213		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1214	}
1215
1216	public void stopPresenceUpdatesFrom(Contact contact) {
1217		// Unsubscribing type='unsubscribe'
1218		PresencePacket packet = new PresencePacket();
1219		packet.setAttribute("type", "unsubscribe");
1220		packet.setAttribute("to", contact.getJid());
1221		packet.setAttribute("from", contact.getAccount().getJid());
1222		Log.d(LOGTAG, packet.toString());
1223		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1224	}
1225
1226	public void stopPresenceUpdatesTo(Contact contact) {
1227		// Canceling a Subscription type=unsubscribed
1228		PresencePacket packet = new PresencePacket();
1229		packet.setAttribute("type", "unsubscribed");
1230		packet.setAttribute("to", contact.getJid());
1231		packet.setAttribute("from", contact.getAccount().getJid());
1232		Log.d(LOGTAG, packet.toString());
1233		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1234	}
1235
1236	public void sendPresenceUpdatesTo(Contact contact) {
1237		// type='subscribed'
1238		PresencePacket packet = new PresencePacket();
1239		packet.setAttribute("type", "subscribed");
1240		packet.setAttribute("to", contact.getJid());
1241		packet.setAttribute("from", contact.getAccount().getJid());
1242		Log.d(LOGTAG, packet.toString());
1243		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1244	}
1245
1246	public void sendPgpPresence(Account account, String signature) {
1247		PresencePacket packet = new PresencePacket();
1248		packet.setAttribute("from", account.getFullJid());
1249		Element status = new Element("status");
1250		status.setContent("online");
1251		packet.addChild(status);
1252		Element x = new Element("x");
1253		x.setAttribute("xmlns", "jabber:x:signed");
1254		x.setContent(signature);
1255		packet.addChild(x);
1256		account.getXmppConnection().sendPresencePacket(packet);
1257	}
1258
1259	public void generatePgpAnnouncement(Account account)
1260			throws PgpEngine.UserInputRequiredException {
1261		if (account.getStatus() == Account.STATUS_ONLINE) {
1262			String signature = getPgpEngine().generateSignature("online");
1263			account.setKey("pgp_signature", signature);
1264			databaseBackend.updateAccount(account);
1265			sendPgpPresence(account, signature);
1266		}
1267	}
1268
1269	public void updateConversation(Conversation conversation) {
1270		this.databaseBackend.updateConversation(conversation);
1271	}
1272
1273	public Contact findContact(String uuid) {
1274		Contact contact = this.databaseBackend.getContact(uuid);
1275		for (Account account : getAccounts()) {
1276			if (contact.getAccountUuid().equals(account.getUuid())) {
1277				contact.setAccount(account);
1278			}
1279		}
1280		return contact;
1281	}
1282
1283	public void removeOnTLSExceptionReceivedListener() {
1284		this.tlsException = null;
1285	}
1286
1287	// TODO dont let thread sleep but schedule wake up
1288	public void reconnectAccount(final Account account, final boolean force) {
1289		new Thread(new Runnable() {
1290
1291			@Override
1292			public void run() {
1293				if (account.getXmppConnection() != null) {
1294					disconnect(account, force);
1295				}
1296				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1297					if (account.getXmppConnection() == null) {
1298						account.setXmppConnection(createConnection(account));
1299					}
1300					Thread thread = new Thread(account.getXmppConnection());
1301					thread.start();
1302					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1303				}
1304			}
1305		}).start();
1306	}
1307
1308	public void updateConversationInGui() {
1309		if (convChangedListener != null) {
1310			convChangedListener.onConversationListChanged();
1311		}
1312	}
1313
1314	public void sendConversationSubject(Conversation conversation,
1315			String subject) {
1316		MessagePacket packet = new MessagePacket();
1317		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1318		packet.setTo(conversation.getContactJid().split("/")[0]);
1319		Element subjectChild = new Element("subject");
1320		subjectChild.setContent(subject);
1321		packet.addChild(subjectChild);
1322		packet.setFrom(conversation.getAccount().getJid());
1323		Account account = conversation.getAccount();
1324		if (account.getStatus() == Account.STATUS_ONLINE) {
1325			account.getXmppConnection().sendMessagePacket(packet);
1326		}
1327	}
1328
1329	public void inviteToConference(Conversation conversation,
1330			List<Contact> contacts) {
1331		for (Contact contact : contacts) {
1332			MessagePacket packet = new MessagePacket();
1333			packet.setTo(conversation.getContactJid().split("/")[0]);
1334			packet.setFrom(conversation.getAccount().getFullJid());
1335			Element x = new Element("x");
1336			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1337			Element invite = new Element("invite");
1338			invite.setAttribute("to", contact.getJid());
1339			x.addChild(invite);
1340			packet.addChild(x);
1341			Log.d(LOGTAG, packet.toString());
1342			conversation.getAccount().getXmppConnection()
1343					.sendMessagePacket(packet);
1344		}
1345
1346	}
1347}