XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.io.File;
   4import java.text.ParseException;
   5import java.text.SimpleDateFormat;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.Random;
  13
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  23import eu.siacs.conversations.entities.Account;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.utils.ExceptionHelper;
  37import eu.siacs.conversations.utils.MessageParser;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  46import eu.siacs.conversations.xmpp.OnStatusChanged;
  47import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  48import eu.siacs.conversations.xmpp.XmppConnection;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  51import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  52import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  53import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  54import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  55import android.app.AlarmManager;
  56import android.app.PendingIntent;
  57import android.app.Service;
  58import android.content.Context;
  59import android.content.Intent;
  60import android.content.SharedPreferences;
  61import android.database.ContentObserver;
  62import android.database.DatabaseUtils;
  63import android.net.ConnectivityManager;
  64import android.net.NetworkInfo;
  65import android.net.Uri;
  66import android.os.Binder;
  67import android.os.Bundle;
  68import android.os.IBinder;
  69import android.os.PowerManager;
  70import android.os.PowerManager.WakeLock;
  71import android.os.SystemClock;
  72import android.preference.PreferenceManager;
  73import android.provider.ContactsContract;
  74import android.util.Log;
  75
  76public class XmppConnectionService extends Service {
  77
  78	protected static final String LOGTAG = "xmppService";
  79	public DatabaseBackend databaseBackend;
  80	private FileBackend fileBackend;
  81
  82	public long startDate;
  83
  84	private static final int PING_MAX_INTERVAL = 300;
  85	private static final int PING_MIN_INTERVAL = 10;
  86	private static final int PING_TIMEOUT = 5;
  87	private static final int CONNECT_TIMEOUT = 60;
  88	private static final long CARBON_GRACE_PERIOD = 60000L;
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  93	
  94	public OnConversationListChangedListener convChangedListener = null;
  95	private int convChangedListenerCount = 0;
  96	private OnAccountListChangedListener accountChangedListener = null;
  97	private OnTLSExceptionReceived tlsException = null;
  98
  99	public void setOnTLSExceptionReceivedListener(
 100			OnTLSExceptionReceived listener) {
 101		tlsException = listener;
 102	}
 103
 104	private Random mRandom = new Random(System.currentTimeMillis());
 105
 106	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 107
 108	private ContentObserver contactObserver = new ContentObserver(null) {
 109		@Override
 110		public void onChange(boolean selfChange) {
 111			super.onChange(selfChange);
 112			Log.d(LOGTAG, "contact list has changed");
 113			mergePhoneContactsWithRoster(null);
 114		}
 115	};
 116
 117	private XmppConnectionService service = this;
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if(PreferenceManager
 128					.getDefaultSharedPreferences(getApplicationContext())
 129					.getBoolean("notification_grace_period_after_carbon_received", true)){
 130				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 131			}
 132
 133			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 134				String pgpBody = MessageParser.getPgpBody(packet);
 135				if (pgpBody != null) {
 136					message = MessageParser.parsePgpChat(pgpBody, packet,
 137							account, service);
 138					message.markUnread();
 139				} else if (packet.hasChild("body")
 140						&& (packet.getBody().startsWith("?OTR"))) {
 141					message = MessageParser.parseOtrChat(packet, account,
 142							service);
 143					if (message != null) {
 144						message.markUnread();
 145					}
 146				} else if (packet.hasChild("body")) {
 147					message = MessageParser.parsePlainTextChat(packet, account,
 148							service);
 149					message.markUnread();
 150				} else if (packet.hasChild("received")
 151						|| (packet.hasChild("sent"))) {
 152					message = MessageParser.parseCarbonMessage(packet, account,
 153							service);
 154					if (message != null) {
 155						if (message.getStatus() == Message.STATUS_SEND) {
 156							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 157							notify = false;
 158							message.getConversation().markRead();
 159						} else {
 160							message.markUnread();
 161						}
 162					}
 163				}
 164
 165			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 166				message = MessageParser
 167						.parseGroupchat(packet, account, service);
 168				if (message != null) {
 169					if (message.getStatus() == Message.STATUS_RECIEVED) {
 170						message.markUnread();
 171					} else {
 172						message.getConversation().markRead();
 173						notify = false;
 174					}
 175				}
 176			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 177				message = MessageParser.parseError(packet, account, service);
 178			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 179				if (packet.hasChild("x")) {
 180					Element x = packet.findChild("x");
 181					if (x.hasChild("invite")) {
 182						findOrCreateConversation(account, packet.getFrom(),
 183								true);
 184						if (convChangedListener != null) {
 185							convChangedListener.onConversationListChanged();
 186						}
 187						Log.d(LOGTAG,
 188								"invitation received to " + packet.getFrom());
 189					}
 190
 191				} else {
 192					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 193				}
 194			}
 195			if ((message == null) || (message.getBody() == null)) {
 196				return;
 197			}
 198			if (packet.hasChild("delay")) {
 199				try {
 200					String stamp = packet.findChild("delay").getAttribute(
 201							"stamp");
 202					stamp = stamp.replace("Z", "+0000");
 203					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 204							.parse(stamp);
 205					message.setTime(date.getTime());
 206				} catch (ParseException e) {
 207					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 208				}
 209			}
 210			Conversation conversation = message.getConversation();
 211			conversation.getMessages().add(message);
 212			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 213				databaseBackend.createMessage(message);
 214			}
 215			if (convChangedListener != null) {
 216				convChangedListener.onConversationListChanged();
 217			} else {
 218				UIHelper.updateNotification(getApplicationContext(),
 219						getConversations(), message.getConversation(), notify);
 220			}
 221		}
 222	};
 223	private OnStatusChanged statusListener = new OnStatusChanged() {
 224
 225		@Override
 226		public void onStatusChanged(Account account) {
 227			if (accountChangedListener != null) {
 228				accountChangedListener.onAccountListChangedListener();
 229			}
 230			if (account.getStatus() == Account.STATUS_ONLINE) {
 231				List<Conversation> conversations = getConversations();
 232				for (int i = 0; i < conversations.size(); ++i) {
 233					if (conversations.get(i).getAccount() == account) {
 234						sendUnsendMessages(conversations.get(i));
 235					}
 236				}
 237				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 238			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 239				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 240					int timeToReconnect = mRandom.nextInt(50) + 10;
 241					scheduleWakeupCall(timeToReconnect, false);
 242				}
 243
 244			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 245				databaseBackend.updateAccount(account);
 246				reconnectAccount(account, true);
 247			} else {
 248				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 249			}
 250		}
 251	};
 252
 253	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 254
 255		@Override
 256		public void onPresencePacketReceived(Account account,
 257				PresencePacket packet) {
 258			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 259				Conversation muc = findMuc(
 260						packet.getAttribute("from").split("/")[0], account);
 261				if (muc != null) {
 262					muc.getMucOptions().processPacket(packet);
 263				} else {
 264					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 265				}
 266			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 267				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 268				if (muc != null) {
 269					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 270					int error = muc.getMucOptions().getError();
 271					muc.getMucOptions().processPacket(packet);
 272					if ((muc.getMucOptions().getError() != error)
 273							&& (convChangedListener != null)) {
 274						Log.d(LOGTAG, "muc error status changed");
 275						convChangedListener.onConversationListChanged();
 276					}
 277				}
 278			} else {
 279				String[] fromParts = packet.getAttribute("from").split("/");
 280				String type = packet.getAttribute("type");
 281				if (fromParts[0].equals(account.getJid())) {
 282					if (fromParts.length==2) {
 283						if (type == null) {
 284							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 285						} else if (type.equals("unavailable")) {
 286							account.removePresence(fromParts[1]);
 287						}
 288					}
 289						
 290				} else {
 291					Contact contact = findContact(account, fromParts[0]);
 292					if (contact == null) {
 293						// most likely roster not synced
 294						return;
 295					}
 296					if (type == null) {
 297						if (fromParts.length == 2) {
 298							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 299							PgpEngine pgp = getPgpEngine();
 300							if (pgp != null) {
 301								Element x = packet.findChild("x","jabber:x:signed");
 302								if (x != null) {
 303									try {
 304										Element status = packet.findChild("status");
 305										String msg;
 306										if (status!=null) {
 307											msg = status.getContent();
 308										} else {
 309											msg = "";
 310										}
 311										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 312														.getContent()));
 313									} catch (OpenPgpException e) {
 314										Log.d(LOGTAG, "faulty pgp. just ignore");
 315									}
 316								}
 317							}
 318							databaseBackend.updateContact(contact);
 319						} else {
 320							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 321						}
 322					} else if (type.equals("unavailable")) {
 323						if (fromParts.length != 2) {
 324							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 325						} else {
 326							contact.removePresence(fromParts[1]);
 327							databaseBackend.updateContact(contact);
 328						}
 329					} else if (type.equals("subscribe")) {
 330						if (contact
 331								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 332							sendPresenceUpdatesTo(contact);
 333							contact.setSubscriptionOption(Contact.Subscription.FROM);
 334							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 335							replaceContactInConversation(contact.getJid(),
 336									contact);
 337							databaseBackend.updateContact(contact);
 338							if ((contact
 339									.getSubscriptionOption(Contact.Subscription.ASKING))
 340									&& (!contact
 341											.getSubscriptionOption(Contact.Subscription.TO))) {
 342								requestPresenceUpdatesFrom(contact);
 343							}
 344						} else {
 345							// TODO: ask user to handle it maybe
 346						}
 347					} else {
 348						//Log.d(LOGTAG, packet.toString());
 349					}
 350					replaceContactInConversation(contact.getJid(), contact);
 351				}
 352			}
 353		}
 354	};
 355
 356	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 357
 358		@Override
 359		public void onIqPacketReceived(Account account, IqPacket packet) {
 360			if (packet.hasChild("query")) {
 361				Element query = packet.findChild("query");
 362				String xmlns = query.getAttribute("xmlns");
 363				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 364					processRosterItems(account, query);
 365					mergePhoneContactsWithRoster(null);
 366				}
 367			}
 368		}
 369	};
 370	
 371	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 372		
 373		@Override
 374		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 375			mJingleConnectionManager.deliverPacket(account, packet);
 376		}
 377	};
 378
 379	private OpenPgpServiceConnection pgpServiceConnection;
 380	private PgpEngine mPgpEngine = null;
 381	private Intent pingIntent;
 382	private PendingIntent pendingPingIntent = null;
 383	private WakeLock wakeLock;
 384	private PowerManager pm;
 385
 386	public PgpEngine getPgpEngine() {
 387		if (pgpServiceConnection.isBound()) {
 388			if (this.mPgpEngine == null) {
 389				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 390						getApplicationContext(),
 391						pgpServiceConnection.getService()));
 392			}
 393			return mPgpEngine;
 394		} else {
 395			return null;
 396		}
 397
 398	}
 399
 400	public FileBackend getFileBackend() {
 401		return this.fileBackend;
 402	}
 403	
 404	public Message attachImageToConversation(Conversation conversation, String presence, Uri uri) {
 405		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 406		message.setPresence(presence);
 407		message.setType(Message.TYPE_IMAGE);
 408		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 409		Log.d(LOGTAG,"new file"+file.getAbsolutePath());
 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 = PreferenceManager
 627				.getDefaultSharedPreferences(getApplicationContext());
 628		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 629		XmppConnection connection = new XmppConnection(account, this.pm);
 630		connection.setOnMessagePacketReceivedListener(this.messageListener);
 631		connection.setOnStatusChangedListener(this.statusListener);
 632		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 633		connection
 634				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 635		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 636		connection
 637				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 638
 639					@Override
 640					public void onTLSExceptionReceived(String fingerprint,
 641							Account account) {
 642						Log.d(LOGTAG, "tls exception arrived in service");
 643						if (tlsException != null) {
 644							tlsException.onTLSExceptionReceived(fingerprint,
 645									account);
 646						}
 647					}
 648				});
 649		connection.setOnBindListener(new OnBindListener() {
 650
 651			@Override
 652			public void onBind(Account account) {
 653				databaseBackend.clearPresences(account);
 654				account.clearPresences(); // self presences
 655				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 656					updateRoster(account, null);
 657				}
 658				connectMultiModeConversations(account);
 659				if (convChangedListener != null) {
 660					convChangedListener.onConversationListChanged();
 661				}
 662			}
 663		});
 664		return connection;
 665	}
 666
 667	synchronized public void sendMessage(Message message, String presence) {
 668		Account account = message.getConversation().getAccount();
 669		Conversation conv = message.getConversation();
 670		boolean saveInDb = false;
 671		boolean addToConversation = false;
 672		if (account.getStatus() == Account.STATUS_ONLINE) {
 673			if (message.getType() == Message.TYPE_IMAGE) {
 674				mJingleConnectionManager.createNewConnection(message);
 675			} else {
 676				MessagePacket packet;
 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						account.getXmppConnection().sendMessagePacket(packet);
 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					account.getXmppConnection().sendMessagePacket(packet);
 703					message.setStatus(Message.STATUS_SEND);
 704					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 705					saveInDb = true;
 706					addToConversation = 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	
 716					packet = prepareMessagePacket(account, message, null);
 717					account.getXmppConnection().sendMessagePacket(packet);
 718				}
 719			}
 720		} else {
 721			// account is offline
 722			saveInDb = true;
 723			addToConversation = true;
 724
 725		}
 726		if (saveInDb) {
 727			databaseBackend.createMessage(message);
 728		}
 729		if (addToConversation) {
 730			conv.getMessages().add(message);
 731			if (convChangedListener != null) {
 732				convChangedListener.onConversationListChanged();
 733			}
 734		}
 735
 736	}
 737
 738	private void sendUnsendMessages(Conversation conversation) {
 739		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 740			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 741				Message message = conversation.getMessages().get(i);
 742				MessagePacket packet = prepareMessagePacket(
 743						conversation.getAccount(), message, null);
 744				conversation.getAccount().getXmppConnection()
 745						.sendMessagePacket(packet);
 746				message.setStatus(Message.STATUS_SEND);
 747				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 748					databaseBackend.updateMessage(message);
 749				} else {
 750					databaseBackend.deleteMessage(message);
 751					conversation.getMessages().remove(i);
 752					i--;
 753				}
 754			}
 755		}
 756	}
 757
 758	public MessagePacket prepareMessagePacket(Account account, Message message,
 759			Session otrSession) {
 760		MessagePacket packet = new MessagePacket();
 761		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 762			packet.setType(MessagePacket.TYPE_CHAT);
 763			if (otrSession != null) {
 764				try {
 765					packet.setBody(otrSession.transformSending(message
 766							.getBody()));
 767				} catch (OtrException e) {
 768					Log.d(LOGTAG,
 769							account.getJid()
 770									+ ": could not encrypt message to "
 771									+ message.getCounterpart());
 772				}
 773				packet.addChild("private","urn:xmpp:carbons:2");
 774				packet.addChild("no-copy","urn:xmpp:hints");
 775				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 776						+ otrSession.getSessionID().getUserID());
 777				packet.setFrom(account.getFullJid());
 778			} else {
 779				packet.setBody(message.getBody());
 780				packet.setTo(message.getCounterpart());
 781				packet.setFrom(account.getJid());
 782			}
 783		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 784			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 785			packet.setBody(message.getBody());
 786			packet.setTo(message.getCounterpart().split("/")[0]);
 787			packet.setFrom(account.getJid());
 788		}
 789		return packet;
 790	}
 791
 792	private void getRoster(Account account,
 793			final OnRosterFetchedListener listener) {
 794		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 795		for (int i = 0; i < contacts.size(); ++i) {
 796			contacts.get(i).setAccount(account);
 797		}
 798		if (listener != null) {
 799			listener.onRosterFetched(contacts);
 800		}
 801	}
 802
 803	public List<Contact> getRoster(Account account) {
 804		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 805		for (int i = 0; i < contacts.size(); ++i) {
 806			contacts.get(i).setAccount(account);
 807		}
 808		return contacts;
 809	}
 810
 811	public void updateRoster(final Account account,
 812			final OnRosterFetchedListener listener) {
 813		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 814		if (!"".equals(account.getRosterVersion())) {
 815			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 816					+ account.getRosterVersion());
 817		} else {
 818			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 819		}
 820		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 821		account.getXmppConnection().sendIqPacket(iqPacket,
 822				new OnIqPacketReceived() {
 823
 824					@Override
 825					public void onIqPacketReceived(final Account account,
 826							IqPacket packet) {
 827						Element roster = packet.findChild("query");
 828						if (roster != null) {
 829							Log.d(LOGTAG, account.getJid()
 830									+ ": processing roster");
 831							processRosterItems(account, roster);
 832							StringBuilder mWhere = new StringBuilder();
 833							mWhere.append("jid NOT IN(");
 834							List<Element> items = roster.getChildren();
 835							for (int i = 0; i < items.size(); ++i) {
 836								mWhere.append(DatabaseUtils
 837										.sqlEscapeString(items.get(i)
 838												.getAttribute("jid")));
 839								if (i != items.size() - 1) {
 840									mWhere.append(",");
 841								}
 842							}
 843							mWhere.append(") and accountUuid = \"");
 844							mWhere.append(account.getUuid());
 845							mWhere.append("\"");
 846							List<Contact> contactsToDelete = databaseBackend
 847									.getContacts(mWhere.toString());
 848							for (Contact contact : contactsToDelete) {
 849								databaseBackend.deleteContact(contact);
 850								replaceContactInConversation(contact.getJid(),
 851										null);
 852							}
 853
 854						} else {
 855							Log.d(LOGTAG, account.getJid()
 856									+ ": empty roster returend");
 857						}
 858						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 859
 860							@Override
 861							public void phoneContactsMerged() {
 862								if (listener != null) {
 863									getRoster(account, listener);
 864								}
 865							}
 866						});
 867					}
 868				});
 869	}
 870
 871	public void mergePhoneContactsWithRoster(
 872			final OnPhoneContactsMerged listener) {
 873		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 874				new OnPhoneContactsLoadedListener() {
 875					@Override
 876					public void onPhoneContactsLoaded(
 877							Hashtable<String, Bundle> phoneContacts) {
 878						List<Contact> contacts = databaseBackend
 879								.getContactsByAccount(null);
 880						for (int i = 0; i < contacts.size(); ++i) {
 881							Contact contact = contacts.get(i);
 882							if (phoneContacts.containsKey(contact.getJid())) {
 883								Bundle phoneContact = phoneContacts.get(contact
 884										.getJid());
 885								String systemAccount = phoneContact
 886										.getInt("phoneid")
 887										+ "#"
 888										+ phoneContact.getString("lookup");
 889								contact.setSystemAccount(systemAccount);
 890								contact.setPhotoUri(phoneContact
 891										.getString("photouri"));
 892								contact.setDisplayName(phoneContact
 893										.getString("displayname"));
 894								databaseBackend.updateContact(contact);
 895								replaceContactInConversation(contact.getJid(),
 896										contact);
 897							} else {
 898								if ((contact.getSystemAccount() != null)
 899										|| (contact.getProfilePhoto() != null)) {
 900									contact.setSystemAccount(null);
 901									contact.setPhotoUri(null);
 902									databaseBackend.updateContact(contact);
 903									replaceContactInConversation(
 904											contact.getJid(), contact);
 905								}
 906							}
 907						}
 908						if (listener != null) {
 909							listener.phoneContactsMerged();
 910						}
 911					}
 912				});
 913	}
 914
 915	public List<Conversation> getConversations() {
 916		if (this.conversations == null) {
 917			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 918			for (Account account : this.accounts) {
 919				accountLookupTable.put(account.getUuid(), account);
 920			}
 921			this.conversations = databaseBackend
 922					.getConversations(Conversation.STATUS_AVAILABLE);
 923			for (Conversation conv : this.conversations) {
 924				Account account = accountLookupTable.get(conv.getAccountUuid());
 925				conv.setAccount(account);
 926				conv.setContact(findContact(account, conv.getContactJid()));
 927				conv.setMessages(databaseBackend.getMessages(conv, 50));
 928			}
 929		}
 930		Collections.sort(this.conversations, new Comparator<Conversation>() {
 931			@Override
 932			public int compare(Conversation lhs, Conversation rhs) {
 933				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 934						.getLatestMessage().getTimeSent());
 935			}
 936		});
 937		return this.conversations;
 938	}
 939
 940	public List<Account> getAccounts() {
 941		return this.accounts;
 942	}
 943
 944	public Contact findContact(Account account, String jid) {
 945		Contact contact = databaseBackend.findContact(account, jid);
 946		if (contact != null) {
 947			contact.setAccount(account);
 948		}
 949		return contact;
 950	}
 951
 952	public Conversation findOrCreateConversation(Account account, String jid,
 953			boolean muc) {
 954		for (Conversation conv : this.getConversations()) {
 955			if ((conv.getAccount().equals(account))
 956					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 957				return conv;
 958			}
 959		}
 960		Conversation conversation = databaseBackend.findConversation(account,
 961				jid);
 962		if (conversation != null) {
 963			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 964			conversation.setAccount(account);
 965			if (muc) {
 966				conversation.setMode(Conversation.MODE_MULTI);
 967			} else {
 968				conversation.setMode(Conversation.MODE_SINGLE);
 969			}
 970			conversation.setMessages(databaseBackend.getMessages(conversation,
 971					50));
 972			this.databaseBackend.updateConversation(conversation);
 973			conversation.setContact(findContact(account,
 974					conversation.getContactJid()));
 975		} else {
 976			String conversationName;
 977			Contact contact = findContact(account, jid);
 978			if (contact != null) {
 979				conversationName = contact.getDisplayName();
 980			} else {
 981				conversationName = jid.split("@")[0];
 982			}
 983			if (muc) {
 984				conversation = new Conversation(conversationName, account, jid,
 985						Conversation.MODE_MULTI);
 986			} else {
 987				conversation = new Conversation(conversationName, account, jid,
 988						Conversation.MODE_SINGLE);
 989			}
 990			conversation.setContact(contact);
 991			this.databaseBackend.createConversation(conversation);
 992		}
 993		this.conversations.add(conversation);
 994		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
 995			joinMuc(conversation);
 996		}
 997		if (this.convChangedListener != null) {
 998			this.convChangedListener.onConversationListChanged();
 999		}
1000		return conversation;
1001	}
1002
1003	public void archiveConversation(Conversation conversation) {
1004		if (conversation.getMode() == Conversation.MODE_MULTI) {
1005			leaveMuc(conversation);
1006		} else {
1007			conversation.endOtrIfNeeded();
1008		}
1009		this.databaseBackend.updateConversation(conversation);
1010		this.conversations.remove(conversation);
1011		if (this.convChangedListener != null) {
1012			this.convChangedListener.onConversationListChanged();
1013		}
1014	}
1015
1016	public int getConversationCount() {
1017		return this.databaseBackend.getConversationCount();
1018	}
1019
1020	public void createAccount(Account account) {
1021		databaseBackend.createAccount(account);
1022		this.accounts.add(account);
1023		this.reconnectAccount(account, false);
1024		if (accountChangedListener != null)
1025			accountChangedListener.onAccountListChangedListener();
1026	}
1027
1028	public void deleteContact(Contact contact) {
1029		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1030		Element query = iq.query("jabber:iq:roster");
1031		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1032		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1033		replaceContactInConversation(contact.getJid(), null);
1034		databaseBackend.deleteContact(contact);
1035	}
1036
1037	public void updateAccount(Account account) {
1038		this.statusListener.onStatusChanged(account);
1039		databaseBackend.updateAccount(account);
1040		reconnectAccount(account, false);
1041		if (accountChangedListener != null)
1042			accountChangedListener.onAccountListChangedListener();
1043	}
1044
1045	public void deleteAccount(Account account) {
1046		if (account.getXmppConnection() != null) {
1047			this.disconnect(account, true);
1048		}
1049		databaseBackend.deleteAccount(account);
1050		this.accounts.remove(account);
1051		if (accountChangedListener != null)
1052			accountChangedListener.onAccountListChangedListener();
1053	}
1054
1055	public void setOnConversationListChangedListener(
1056			OnConversationListChangedListener listener) {
1057		this.convChangedListener = listener;
1058		this.convChangedListenerCount++;
1059		Log.d(LOGTAG,"registered on conv changed in backend ("+convChangedListenerCount+")");
1060	}
1061
1062	public void removeOnConversationListChangedListener() {
1063		this.convChangedListenerCount--;
1064		Log.d(LOGTAG,"someone on conv changed listener removed listener ("+convChangedListenerCount+")");
1065		if (this.convChangedListenerCount==0) {
1066			this.convChangedListener = null;
1067		}
1068	}
1069
1070	public void setOnAccountListChangedListener(
1071			OnAccountListChangedListener listener) {
1072		this.accountChangedListener = listener;
1073	}
1074
1075	public void removeOnAccountListChangedListener() {
1076		this.accountChangedListener = null;
1077	}
1078
1079	public void connectMultiModeConversations(Account account) {
1080		List<Conversation> conversations = getConversations();
1081		for (int i = 0; i < conversations.size(); i++) {
1082			Conversation conversation = conversations.get(i);
1083			if ((conversation.getMode() == Conversation.MODE_MULTI)
1084					&& (conversation.getAccount() == account)) {
1085				joinMuc(conversation);
1086			}
1087		}
1088	}
1089
1090	public void joinMuc(Conversation conversation) {
1091		String[] mucParts = conversation.getContactJid().split("/");
1092		String muc;
1093		String nick;
1094		if (mucParts.length == 2) {
1095			muc = mucParts[0];
1096			nick = mucParts[1];
1097		} else {
1098			muc = mucParts[0];
1099			nick = conversation.getAccount().getUsername();
1100		}
1101		PresencePacket packet = new PresencePacket();
1102		packet.setAttribute("to", muc + "/" + nick);
1103		Element x = new Element("x");
1104		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1105		if (conversation.getMessages().size() != 0) {
1106			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1107			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1108			x.addChild("history").setAttribute("seconds", diff + "");
1109		}
1110		packet.addChild(x);
1111		conversation.getAccount().getXmppConnection()
1112				.sendPresencePacket(packet);
1113	}
1114
1115	private OnRenameListener renameListener = null;
1116
1117	public void setOnRenameListener(OnRenameListener listener) {
1118		this.renameListener = listener;
1119	}
1120
1121	public void renameInMuc(final Conversation conversation, final String nick) {
1122		final MucOptions options = conversation.getMucOptions();
1123		if (options.online()) {
1124			options.setOnRenameListener(new OnRenameListener() {
1125
1126				@Override
1127				public void onRename(boolean success) {
1128					if (renameListener != null) {
1129						renameListener.onRename(success);
1130					}
1131					if (success) {
1132						databaseBackend.updateConversation(conversation);
1133					}
1134				}
1135			});
1136			options.flagAboutToRename();
1137			PresencePacket packet = new PresencePacket();
1138			packet.setAttribute("to",
1139					conversation.getContactJid().split("/")[0] + "/" + nick);
1140			packet.setAttribute("from", conversation.getAccount().getFullJid());
1141
1142			conversation.getAccount().getXmppConnection()
1143					.sendPresencePacket(packet, null);
1144		} else {
1145			String jid = conversation.getContactJid().split("/")[0] + "/"
1146					+ nick;
1147			conversation.setContactJid(jid);
1148			databaseBackend.updateConversation(conversation);
1149			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1150				joinMuc(conversation);
1151			}
1152		}
1153	}
1154
1155	public void leaveMuc(Conversation conversation) {
1156		PresencePacket packet = new PresencePacket();
1157		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1158		packet.setAttribute("from", conversation.getAccount().getFullJid());
1159		packet.setAttribute("type", "unavailable");
1160		Log.d(LOGTAG,"send leaving muc " + packet);
1161		conversation.getAccount().getXmppConnection()
1162				.sendPresencePacket(packet);
1163		conversation.getMucOptions().setOffline();
1164	}
1165
1166	public void disconnect(Account account, boolean force) {
1167		if ((account.getStatus() == Account.STATUS_ONLINE)
1168				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1169			if (!force) {
1170				List<Conversation> conversations = getConversations();
1171				for (int i = 0; i < conversations.size(); i++) {
1172					Conversation conversation = conversations.get(i);
1173					if (conversation.getAccount() == account) {
1174						if (conversation.getMode() == Conversation.MODE_MULTI) {
1175							leaveMuc(conversation);
1176						} else {
1177							conversation.endOtrIfNeeded();
1178						}
1179					}
1180				}
1181			}
1182			account.getXmppConnection().disconnect(force);
1183		}
1184	}
1185
1186	@Override
1187	public IBinder onBind(Intent intent) {
1188		return mBinder;
1189	}
1190
1191	public void updateContact(Contact contact) {
1192		databaseBackend.updateContact(contact);
1193		replaceContactInConversation(contact.getJid(), contact);
1194	}
1195
1196	public void updateMessage(Message message) {
1197		databaseBackend.updateMessage(message);
1198	}
1199
1200	public void createContact(Contact contact) {
1201		SharedPreferences sharedPref = PreferenceManager
1202				.getDefaultSharedPreferences(getApplicationContext());
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}