XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.io.File;
   4import java.text.ParseException;
   5import java.text.SimpleDateFormat;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.Random;
  13
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  23import eu.siacs.conversations.entities.Account;
  24import eu.siacs.conversations.entities.Contact;
  25import eu.siacs.conversations.entities.Conversation;
  26import eu.siacs.conversations.entities.Message;
  27import eu.siacs.conversations.entities.MucOptions;
  28import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  29import eu.siacs.conversations.entities.Presences;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.utils.ExceptionHelper;
  37import eu.siacs.conversations.utils.MessageParser;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  46import eu.siacs.conversations.xmpp.OnStatusChanged;
  47import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  48import eu.siacs.conversations.xmpp.XmppConnection;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  51import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  52import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  53import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  54import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  55import android.app.AlarmManager;
  56import android.app.PendingIntent;
  57import android.app.Service;
  58import android.content.Context;
  59import android.content.Intent;
  60import android.content.SharedPreferences;
  61import android.database.ContentObserver;
  62import android.database.DatabaseUtils;
  63import android.net.ConnectivityManager;
  64import android.net.NetworkInfo;
  65import android.net.Uri;
  66import android.os.Binder;
  67import android.os.Bundle;
  68import android.os.IBinder;
  69import android.os.PowerManager;
  70import android.os.PowerManager.WakeLock;
  71import android.os.SystemClock;
  72import android.preference.PreferenceManager;
  73import android.provider.ContactsContract;
  74import android.util.Log;
  75
  76public class XmppConnectionService extends Service {
  77
  78	protected static final String LOGTAG = "xmppService";
  79	public DatabaseBackend databaseBackend;
  80	private FileBackend fileBackend;
  81
  82	public long startDate;
  83
  84	private static final int PING_MAX_INTERVAL = 300;
  85	private static final int PING_MIN_INTERVAL = 10;
  86	private static final int PING_TIMEOUT = 5;
  87	private static final int CONNECT_TIMEOUT = 60;
  88	private static final long CARBON_GRACE_PERIOD = 60000L;
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  93	
  94	public OnConversationListChangedListener convChangedListener = null;
  95	private int convChangedListenerCount = 0;
  96	private OnAccountListChangedListener accountChangedListener = null;
  97	private OnTLSExceptionReceived tlsException = null;
  98
  99	public void setOnTLSExceptionReceivedListener(
 100			OnTLSExceptionReceived listener) {
 101		tlsException = listener;
 102	}
 103
 104	private Random mRandom = new Random(System.currentTimeMillis());
 105
 106	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 107
 108	private ContentObserver contactObserver = new ContentObserver(null) {
 109		@Override
 110		public void onChange(boolean selfChange) {
 111			super.onChange(selfChange);
 112			Log.d(LOGTAG, "contact list has changed");
 113			mergePhoneContactsWithRoster(null);
 114		}
 115	};
 116
 117	private XmppConnectionService service = this;
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if(PreferenceManager
 128					.getDefaultSharedPreferences(getApplicationContext())
 129					.getBoolean("notification_grace_period_after_carbon_received", true)){
 130				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 131			}
 132
 133			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 134				String pgpBody = MessageParser.getPgpBody(packet);
 135				if (pgpBody != null) {
 136					message = MessageParser.parsePgpChat(pgpBody, packet,
 137							account, service);
 138					message.markUnread();
 139				} else if (packet.hasChild("body")
 140						&& (packet.getBody().startsWith("?OTR"))) {
 141					message = MessageParser.parseOtrChat(packet, account,
 142							service);
 143					if (message != null) {
 144						message.markUnread();
 145					}
 146				} else if (packet.hasChild("body")) {
 147					message = MessageParser.parsePlainTextChat(packet, account,
 148							service);
 149					message.markUnread();
 150				} else if (packet.hasChild("received")
 151						|| (packet.hasChild("sent"))) {
 152					message = MessageParser.parseCarbonMessage(packet, account,
 153							service);
 154					if (message != null) {
 155						if (message.getStatus() == Message.STATUS_SEND) {
 156							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 157							notify = false;
 158							message.getConversation().markRead();
 159						} else {
 160							message.markUnread();
 161						}
 162					}
 163				}
 164
 165			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 166				message = MessageParser
 167						.parseGroupchat(packet, account, service);
 168				if (message != null) {
 169					if (message.getStatus() == Message.STATUS_RECIEVED) {
 170						message.markUnread();
 171					} else {
 172						message.getConversation().markRead();
 173						notify = false;
 174					}
 175				}
 176			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 177				MessageParser.parseError(packet, account, service);
 178				return;
 179			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 180				if (packet.hasChild("x")) {
 181					Element x = packet.findChild("x");
 182					if (x.hasChild("invite")) {
 183						findOrCreateConversation(account, packet.getFrom(),
 184								true);
 185						if (convChangedListener != null) {
 186							convChangedListener.onConversationListChanged();
 187						}
 188						Log.d(LOGTAG,
 189								"invitation received to " + packet.getFrom());
 190					}
 191
 192				} else {
 193					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 194				}
 195			}
 196			if ((message == null) || (message.getBody() == null)) {
 197				return;
 198			}
 199			if (packet.hasChild("delay")) {
 200				try {
 201					String stamp = packet.findChild("delay").getAttribute(
 202							"stamp");
 203					stamp = stamp.replace("Z", "+0000");
 204					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 205							.parse(stamp);
 206					message.setTime(date.getTime());
 207				} catch (ParseException e) {
 208					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 209				}
 210			}
 211			Conversation conversation = message.getConversation();
 212			conversation.getMessages().add(message);
 213			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 214				databaseBackend.createMessage(message);
 215			}
 216			if (convChangedListener != null) {
 217				convChangedListener.onConversationListChanged();
 218			} else {
 219				UIHelper.updateNotification(getApplicationContext(),
 220						getConversations(), message.getConversation(), notify);
 221			}
 222		}
 223	};
 224	private OnStatusChanged statusListener = new OnStatusChanged() {
 225
 226		@Override
 227		public void onStatusChanged(Account account) {
 228			if (accountChangedListener != null) {
 229				accountChangedListener.onAccountListChangedListener();
 230			}
 231			if (account.getStatus() == Account.STATUS_ONLINE) {
 232				List<Conversation> conversations = getConversations();
 233				for (int i = 0; i < conversations.size(); ++i) {
 234					if (conversations.get(i).getAccount() == account) {
 235						sendUnsendMessages(conversations.get(i));
 236					}
 237				}
 238				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 239			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 240				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 241					int timeToReconnect = mRandom.nextInt(50) + 10;
 242					scheduleWakeupCall(timeToReconnect, false);
 243				}
 244
 245			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 246				databaseBackend.updateAccount(account);
 247				reconnectAccount(account, true);
 248			} else {
 249				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 250			}
 251		}
 252	};
 253
 254	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 255
 256		@Override
 257		public void onPresencePacketReceived(Account account,
 258				PresencePacket packet) {
 259			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 260				Conversation muc = findMuc(
 261						packet.getAttribute("from").split("/")[0], account);
 262				if (muc != null) {
 263					muc.getMucOptions().processPacket(packet);
 264				} else {
 265					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 266				}
 267			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 268				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 269				if (muc != null) {
 270					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 271					int error = muc.getMucOptions().getError();
 272					muc.getMucOptions().processPacket(packet);
 273					if ((muc.getMucOptions().getError() != error)
 274							&& (convChangedListener != null)) {
 275						Log.d(LOGTAG, "muc error status changed");
 276						convChangedListener.onConversationListChanged();
 277					}
 278				}
 279			} else {
 280				String[] fromParts = packet.getAttribute("from").split("/");
 281				String type = packet.getAttribute("type");
 282				if (fromParts[0].equals(account.getJid())) {
 283					if (fromParts.length==2) {
 284						if (type == null) {
 285							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 286						} else if (type.equals("unavailable")) {
 287							account.removePresence(fromParts[1]);
 288						}
 289					}
 290						
 291				} else {
 292					Contact contact = findContact(account, fromParts[0]);
 293					if (contact == null) {
 294						// most likely roster not synced
 295						return;
 296					}
 297					if (type == null) {
 298						if (fromParts.length == 2) {
 299							contact.updatePresence(fromParts[1], Presences.parseShow(packet.findChild("show")));
 300							PgpEngine pgp = getPgpEngine();
 301							if (pgp != null) {
 302								Element x = packet.findChild("x","jabber:x:signed");
 303								if (x != null) {
 304									try {
 305										Element status = packet.findChild("status");
 306										String msg;
 307										if (status!=null) {
 308											msg = status.getContent();
 309										} else {
 310											msg = "";
 311										}
 312										contact.setPgpKeyId(pgp.fetchKeyId(account,msg, x
 313														.getContent()));
 314									} catch (OpenPgpException e) {
 315										Log.d(LOGTAG, "faulty pgp. just ignore");
 316									}
 317								}
 318							}
 319							databaseBackend.updateContact(contact);
 320						} else {
 321							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 322						}
 323					} else if (type.equals("unavailable")) {
 324						if (fromParts.length != 2) {
 325							// Log.d(LOGTAG,"received presence with no resource "+packet.toString());
 326						} else {
 327							contact.removePresence(fromParts[1]);
 328							databaseBackend.updateContact(contact);
 329						}
 330					} else if (type.equals("subscribe")) {
 331						if (contact
 332								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 333							sendPresenceUpdatesTo(contact);
 334							contact.setSubscriptionOption(Contact.Subscription.FROM);
 335							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 336							replaceContactInConversation(contact.getJid(),
 337									contact);
 338							databaseBackend.updateContact(contact);
 339							if ((contact
 340									.getSubscriptionOption(Contact.Subscription.ASKING))
 341									&& (!contact
 342											.getSubscriptionOption(Contact.Subscription.TO))) {
 343								requestPresenceUpdatesFrom(contact);
 344							}
 345						} else {
 346							// TODO: ask user to handle it maybe
 347						}
 348					} else {
 349						//Log.d(LOGTAG, packet.toString());
 350					}
 351					replaceContactInConversation(contact.getJid(), contact);
 352				}
 353			}
 354		}
 355	};
 356
 357	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 358
 359		@Override
 360		public void onIqPacketReceived(Account account, IqPacket packet) {
 361			if (packet.hasChild("query")) {
 362				Element query = packet.findChild("query");
 363				String xmlns = query.getAttribute("xmlns");
 364				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 365					processRosterItems(account, query);
 366					mergePhoneContactsWithRoster(null);
 367				}
 368			}
 369		}
 370	};
 371	
 372	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 373		
 374		@Override
 375		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 376			mJingleConnectionManager.deliverPacket(account, packet);
 377		}
 378	};
 379
 380	private OpenPgpServiceConnection pgpServiceConnection;
 381	private PgpEngine mPgpEngine = null;
 382	private Intent pingIntent;
 383	private PendingIntent pendingPingIntent = null;
 384	private WakeLock wakeLock;
 385	private PowerManager pm;
 386
 387	public PgpEngine getPgpEngine() {
 388		if (pgpServiceConnection.isBound()) {
 389			if (this.mPgpEngine == null) {
 390				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 391						getApplicationContext(),
 392						pgpServiceConnection.getService()));
 393			}
 394			return mPgpEngine;
 395		} else {
 396			return null;
 397		}
 398
 399	}
 400
 401	public FileBackend getFileBackend() {
 402		return this.fileBackend;
 403	}
 404	
 405	public Message attachImageToConversation(Conversation conversation, String presence, Uri uri) {
 406		Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 407		message.setPresence(presence);
 408		message.setType(Message.TYPE_IMAGE);
 409		File file = this.fileBackend.copyImageToPrivateStorage(message, uri);
 410		conversation.getMessages().add(message);
 411		databaseBackend.createMessage(message);
 412		sendMessage(message, null);
 413		return message;
 414	}
 415	
 416	
 417	protected Conversation findMuc(String name, Account account) {
 418		for (Conversation conversation : this.conversations) {
 419			if (conversation.getContactJid().split("/")[0].equals(name)
 420					&& (conversation.getAccount() == account)) {
 421				return conversation;
 422			}
 423		}
 424		return null;
 425	}
 426
 427	private void processRosterItems(Account account, Element elements) {
 428		String version = elements.getAttribute("ver");
 429		if (version != null) {
 430			account.setRosterVersion(version);
 431			databaseBackend.updateAccount(account);
 432		}
 433		for (Element item : elements.getChildren()) {
 434			if (item.getName().equals("item")) {
 435				String jid = item.getAttribute("jid");
 436				String subscription = item.getAttribute("subscription");
 437				Contact contact = databaseBackend.findContact(account, jid);
 438				if (contact == null) {
 439					if (!subscription.equals("remove")) {
 440						String name = item.getAttribute("name");
 441						if (name == null) {
 442							name = jid.split("@")[0];
 443						}
 444						contact = new Contact(account, name, jid, null);
 445						contact.parseSubscriptionFromElement(item);
 446						databaseBackend.createContact(contact);
 447					}
 448				} else {
 449					if (subscription.equals("remove")) {
 450						databaseBackend.deleteContact(contact);
 451						replaceContactInConversation(contact.getJid(), null);
 452					} else {
 453						contact.parseSubscriptionFromElement(item);
 454						databaseBackend.updateContact(contact);
 455						replaceContactInConversation(contact.getJid(), contact);
 456					}
 457				}
 458			}
 459		}
 460	}
 461
 462	private void replaceContactInConversation(String jid, Contact contact) {
 463		List<Conversation> conversations = getConversations();
 464		for (int i = 0; i < conversations.size(); ++i) {
 465			if ((conversations.get(i).getContactJid().equals(jid))) {
 466				conversations.get(i).setContact(contact);
 467				break;
 468			}
 469		}
 470	}
 471
 472	public class XmppConnectionBinder extends Binder {
 473		public XmppConnectionService getService() {
 474			return XmppConnectionService.this;
 475		}
 476	}
 477
 478	@Override
 479	public int onStartCommand(Intent intent, int flags, int startId) {
 480		this.wakeLock.acquire();
 481		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 482		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 483				.getSystemService(Context.CONNECTIVITY_SERVICE);
 484		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 485		boolean isConnected = activeNetwork != null
 486				&& activeNetwork.isConnected();
 487
 488		for (Account account : accounts) {
 489			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 490				if (!isConnected) {
 491					account.setStatus(Account.STATUS_NO_INTERNET);
 492					if (statusListener != null) {
 493						statusListener.onStatusChanged(account);
 494					}
 495				} else {
 496					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 497						account.setStatus(Account.STATUS_OFFLINE);
 498						if (statusListener != null) {
 499							statusListener.onStatusChanged(account);
 500						}
 501					}
 502
 503					// TODO 3 remaining cases
 504					if (account.getStatus() == Account.STATUS_ONLINE) {
 505						long lastReceived = account.getXmppConnection().lastPaketReceived;
 506						long lastSent = account.getXmppConnection().lastPingSent;
 507						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 508							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 509							this.reconnectAccount(account, true);
 510						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 511							account.getXmppConnection().sendPing();
 512							account.getXmppConnection().lastPingSent = SystemClock
 513									.elapsedRealtime();
 514							this.scheduleWakeupCall(2, false);
 515						}
 516					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 517						if (account.getXmppConnection() == null) {
 518							account.setXmppConnection(this
 519									.createConnection(account));
 520						}
 521						account.getXmppConnection().lastPingSent = SystemClock
 522								.elapsedRealtime();
 523						new Thread(account.getXmppConnection()).start();
 524					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 525							&& ((SystemClock.elapsedRealtime() - account
 526									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 527						Log.d(LOGTAG, account.getJid()
 528								+ ": time out during connect reconnecting");
 529						reconnectAccount(account, true);
 530					} else {
 531						Log.d(LOGTAG,
 532								"seconds since last connect:"
 533										+ ((SystemClock.elapsedRealtime() - account
 534												.getXmppConnection().lastConnect) / 1000));
 535						Log.d(LOGTAG,
 536								account.getJid() + ": status="
 537										+ account.getStatus());
 538						// TODO notify user of ssl cert problem or auth problem
 539						// or what ever
 540					}
 541					// in any case. reschedule wakup call
 542					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 543				}
 544				if (accountChangedListener != null) {
 545					accountChangedListener.onAccountListChangedListener();
 546				}
 547			}
 548		}
 549		if (wakeLock.isHeld()) {
 550			wakeLock.release();
 551		}
 552		return START_STICKY;
 553	}
 554
 555	@Override
 556	public void onCreate() {
 557		ExceptionHelper.init(getApplicationContext());
 558		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 559		this.fileBackend = new FileBackend(getApplicationContext());
 560		this.accounts = databaseBackend.getAccounts();
 561
 562		this.getConversations();
 563		
 564		getContentResolver().registerContentObserver(
 565				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 566		this.pgpServiceConnection = new OpenPgpServiceConnection(
 567				getApplicationContext(), "org.sufficientlysecure.keychain");
 568		this.pgpServiceConnection.bindToService();
 569
 570		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 571		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 572				"XmppConnectionService");
 573	}
 574
 575	@Override
 576	public void onDestroy() {
 577		super.onDestroy();
 578		for (Account account : accounts) {
 579			if (account.getXmppConnection() != null) {
 580				disconnect(account, true);
 581			}
 582		}
 583	}
 584
 585	protected void scheduleWakeupCall(int seconds, boolean ping) {
 586		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 587		Context context = getApplicationContext();
 588		AlarmManager alarmManager = (AlarmManager) context
 589				.getSystemService(Context.ALARM_SERVICE);
 590
 591		if (ping) {
 592			if (this.pingIntent == null) {
 593				this.pingIntent = new Intent(context, EventReceiver.class);
 594				this.pingIntent.setAction("ping");
 595				this.pingIntent.putExtra("time", timeToWake);
 596				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 597						this.pingIntent, 0);
 598				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 599						timeToWake, pendingPingIntent);
 600				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 601			} else {
 602				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 603				if (scheduledTime < SystemClock.elapsedRealtime()
 604						|| (scheduledTime > timeToWake)) {
 605					this.pingIntent.putExtra("time", timeToWake);
 606					alarmManager.cancel(this.pendingPingIntent);
 607					this.pendingPingIntent = PendingIntent.getBroadcast(
 608							context, 0, this.pingIntent, 0);
 609					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 610							timeToWake, pendingPingIntent);
 611					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 612				}
 613			}
 614		} else {
 615			Intent intent = new Intent(context, EventReceiver.class);
 616			intent.setAction("ping_check");
 617			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 618					intent, 0);
 619			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 620					alarmIntent);
 621		}
 622
 623	}
 624
 625	public XmppConnection createConnection(Account account) {
 626		SharedPreferences sharedPref = 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		MessagePacket packet = null;
 671		boolean saveInDb = false;
 672		boolean addToConversation = false;
 673		boolean send = false;
 674		if (account.getStatus() == Account.STATUS_ONLINE) {
 675			if (message.getType() == Message.TYPE_IMAGE) {
 676				mJingleConnectionManager.createNewConnection(message);
 677			} else {
 678				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 679					if (!conv.hasValidOtrSession()) {
 680						// starting otr session. messages will be send later
 681						conv.startOtrSession(getApplicationContext(), presence,true);
 682					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 683						// otr session aleary exists, creating message packet
 684						// accordingly
 685						packet = prepareMessagePacket(account, message,
 686								conv.getOtrSession());
 687						send = true;
 688						message.setStatus(Message.STATUS_SEND);
 689					}
 690					saveInDb = true;
 691					addToConversation = true;
 692				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 693					message.getConversation().endOtrIfNeeded();
 694					long keyId = message.getConversation().getContact()
 695							.getPgpKeyId();
 696					packet = new MessagePacket();
 697					packet.setType(MessagePacket.TYPE_CHAT);
 698					packet.setFrom(message.getConversation().getAccount()
 699							.getFullJid());
 700					packet.setTo(message.getCounterpart());
 701					packet.setBody("This is an XEP-0027 encryted message");
 702					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 703					message.setStatus(Message.STATUS_SEND);
 704					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 705					saveInDb = true;
 706					addToConversation = true;
 707					send = true;
 708				} else {
 709					message.getConversation().endOtrIfNeeded();
 710					// don't encrypt
 711					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 712						message.setStatus(Message.STATUS_SEND);
 713						saveInDb = true;
 714						addToConversation = true;
 715					}
 716					packet = prepareMessagePacket(account, message, null);
 717					send = true;
 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		if ((send)&&(packet!=null)) {
 736			account.getXmppConnection().sendMessagePacket(packet);
 737		}
 738
 739	}
 740
 741	private void sendUnsendMessages(Conversation conversation) {
 742		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 743			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 744				Message message = conversation.getMessages().get(i);
 745				MessagePacket packet = prepareMessagePacket(
 746						conversation.getAccount(), message, null);
 747				conversation.getAccount().getXmppConnection()
 748						.sendMessagePacket(packet);
 749				message.setStatus(Message.STATUS_SEND);
 750				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 751					databaseBackend.updateMessage(message);
 752				} else {
 753					databaseBackend.deleteMessage(message);
 754					conversation.getMessages().remove(i);
 755					i--;
 756				}
 757			}
 758		}
 759	}
 760
 761	public MessagePacket prepareMessagePacket(Account account, Message message,
 762			Session otrSession) {
 763		MessagePacket packet = new MessagePacket();
 764		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 765			packet.setType(MessagePacket.TYPE_CHAT);
 766			if (otrSession != null) {
 767				try {
 768					packet.setBody(otrSession.transformSending(message
 769							.getBody()));
 770				} catch (OtrException e) {
 771					Log.d(LOGTAG,
 772							account.getJid()
 773									+ ": could not encrypt message to "
 774									+ message.getCounterpart());
 775				}
 776				packet.addChild("private","urn:xmpp:carbons:2");
 777				packet.addChild("no-copy","urn:xmpp:hints");
 778				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 779						+ otrSession.getSessionID().getUserID());
 780				packet.setFrom(account.getFullJid());
 781			} else {
 782				packet.setBody(message.getBody());
 783				packet.setTo(message.getCounterpart());
 784				packet.setFrom(account.getJid());
 785			}
 786		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 787			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 788			packet.setBody(message.getBody());
 789			packet.setTo(message.getCounterpart().split("/")[0]);
 790			packet.setFrom(account.getJid());
 791		}
 792		packet.setId(message.getUuid());
 793		return packet;
 794	}
 795
 796	private void getRoster(Account account,
 797			final OnRosterFetchedListener listener) {
 798		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 799		for (int i = 0; i < contacts.size(); ++i) {
 800			contacts.get(i).setAccount(account);
 801		}
 802		if (listener != null) {
 803			listener.onRosterFetched(contacts);
 804		}
 805	}
 806
 807	public List<Contact> getRoster(Account account) {
 808		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 809		for (int i = 0; i < contacts.size(); ++i) {
 810			contacts.get(i).setAccount(account);
 811		}
 812		return contacts;
 813	}
 814
 815	public void updateRoster(final Account account,
 816			final OnRosterFetchedListener listener) {
 817		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 818		if (!"".equals(account.getRosterVersion())) {
 819			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 820					+ account.getRosterVersion());
 821		} else {
 822			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 823		}
 824		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 825		account.getXmppConnection().sendIqPacket(iqPacket,
 826				new OnIqPacketReceived() {
 827
 828					@Override
 829					public void onIqPacketReceived(final Account account,
 830							IqPacket packet) {
 831						Element roster = packet.findChild("query");
 832						if (roster != null) {
 833							Log.d(LOGTAG, account.getJid()
 834									+ ": processing roster");
 835							processRosterItems(account, roster);
 836							StringBuilder mWhere = new StringBuilder();
 837							mWhere.append("jid NOT IN(");
 838							List<Element> items = roster.getChildren();
 839							for (int i = 0; i < items.size(); ++i) {
 840								mWhere.append(DatabaseUtils
 841										.sqlEscapeString(items.get(i)
 842												.getAttribute("jid")));
 843								if (i != items.size() - 1) {
 844									mWhere.append(",");
 845								}
 846							}
 847							mWhere.append(") and accountUuid = \"");
 848							mWhere.append(account.getUuid());
 849							mWhere.append("\"");
 850							List<Contact> contactsToDelete = databaseBackend
 851									.getContacts(mWhere.toString());
 852							for (Contact contact : contactsToDelete) {
 853								databaseBackend.deleteContact(contact);
 854								replaceContactInConversation(contact.getJid(),
 855										null);
 856							}
 857
 858						} else {
 859							Log.d(LOGTAG, account.getJid()
 860									+ ": empty roster returend");
 861						}
 862						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 863
 864							@Override
 865							public void phoneContactsMerged() {
 866								if (listener != null) {
 867									getRoster(account, listener);
 868								}
 869							}
 870						});
 871					}
 872				});
 873	}
 874
 875	public void mergePhoneContactsWithRoster(
 876			final OnPhoneContactsMerged listener) {
 877		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 878				new OnPhoneContactsLoadedListener() {
 879					@Override
 880					public void onPhoneContactsLoaded(
 881							Hashtable<String, Bundle> phoneContacts) {
 882						List<Contact> contacts = databaseBackend
 883								.getContactsByAccount(null);
 884						for (int i = 0; i < contacts.size(); ++i) {
 885							Contact contact = contacts.get(i);
 886							if (phoneContacts.containsKey(contact.getJid())) {
 887								Bundle phoneContact = phoneContacts.get(contact
 888										.getJid());
 889								String systemAccount = phoneContact
 890										.getInt("phoneid")
 891										+ "#"
 892										+ phoneContact.getString("lookup");
 893								contact.setSystemAccount(systemAccount);
 894								contact.setPhotoUri(phoneContact
 895										.getString("photouri"));
 896								contact.setDisplayName(phoneContact
 897										.getString("displayname"));
 898								databaseBackend.updateContact(contact);
 899								replaceContactInConversation(contact.getJid(),
 900										contact);
 901							} else {
 902								if ((contact.getSystemAccount() != null)
 903										|| (contact.getProfilePhoto() != null)) {
 904									contact.setSystemAccount(null);
 905									contact.setPhotoUri(null);
 906									databaseBackend.updateContact(contact);
 907									replaceContactInConversation(
 908											contact.getJid(), contact);
 909								}
 910							}
 911						}
 912						if (listener != null) {
 913							listener.phoneContactsMerged();
 914						}
 915					}
 916				});
 917	}
 918
 919	public List<Conversation> getConversations() {
 920		if (this.conversations == null) {
 921			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 922			for (Account account : this.accounts) {
 923				accountLookupTable.put(account.getUuid(), account);
 924			}
 925			this.conversations = databaseBackend
 926					.getConversations(Conversation.STATUS_AVAILABLE);
 927			for (Conversation conv : this.conversations) {
 928				Account account = accountLookupTable.get(conv.getAccountUuid());
 929				conv.setAccount(account);
 930				conv.setContact(findContact(account, conv.getContactJid()));
 931				conv.setMessages(databaseBackend.getMessages(conv, 50));
 932			}
 933		}
 934		Collections.sort(this.conversations, new Comparator<Conversation>() {
 935			@Override
 936			public int compare(Conversation lhs, Conversation rhs) {
 937				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 938						.getLatestMessage().getTimeSent());
 939			}
 940		});
 941		return this.conversations;
 942	}
 943
 944	public List<Account> getAccounts() {
 945		return this.accounts;
 946	}
 947
 948	public Contact findContact(Account account, String jid) {
 949		Contact contact = databaseBackend.findContact(account, jid);
 950		if (contact != null) {
 951			contact.setAccount(account);
 952		}
 953		return contact;
 954	}
 955
 956	public Conversation findOrCreateConversation(Account account, String jid,
 957			boolean muc) {
 958		for (Conversation conv : this.getConversations()) {
 959			if ((conv.getAccount().equals(account))
 960					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 961				return conv;
 962			}
 963		}
 964		Conversation conversation = databaseBackend.findConversation(account,
 965				jid);
 966		if (conversation != null) {
 967			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 968			conversation.setAccount(account);
 969			if (muc) {
 970				conversation.setMode(Conversation.MODE_MULTI);
 971			} else {
 972				conversation.setMode(Conversation.MODE_SINGLE);
 973			}
 974			conversation.setMessages(databaseBackend.getMessages(conversation,
 975					50));
 976			this.databaseBackend.updateConversation(conversation);
 977			conversation.setContact(findContact(account,
 978					conversation.getContactJid()));
 979		} else {
 980			String conversationName;
 981			Contact contact = findContact(account, jid);
 982			if (contact != null) {
 983				conversationName = contact.getDisplayName();
 984			} else {
 985				conversationName = jid.split("@")[0];
 986			}
 987			if (muc) {
 988				conversation = new Conversation(conversationName, account, jid,
 989						Conversation.MODE_MULTI);
 990			} else {
 991				conversation = new Conversation(conversationName, account, jid,
 992						Conversation.MODE_SINGLE);
 993			}
 994			conversation.setContact(contact);
 995			this.databaseBackend.createConversation(conversation);
 996		}
 997		this.conversations.add(conversation);
 998		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
 999			joinMuc(conversation);
1000		}
1001		if (this.convChangedListener != null) {
1002			this.convChangedListener.onConversationListChanged();
1003		}
1004		return conversation;
1005	}
1006
1007	public void archiveConversation(Conversation conversation) {
1008		if (conversation.getMode() == Conversation.MODE_MULTI) {
1009			leaveMuc(conversation);
1010		} else {
1011			conversation.endOtrIfNeeded();
1012		}
1013		this.databaseBackend.updateConversation(conversation);
1014		this.conversations.remove(conversation);
1015		if (this.convChangedListener != null) {
1016			this.convChangedListener.onConversationListChanged();
1017		}
1018	}
1019
1020	public int getConversationCount() {
1021		return this.databaseBackend.getConversationCount();
1022	}
1023
1024	public void createAccount(Account account) {
1025		databaseBackend.createAccount(account);
1026		this.accounts.add(account);
1027		this.reconnectAccount(account, false);
1028		if (accountChangedListener != null)
1029			accountChangedListener.onAccountListChangedListener();
1030	}
1031
1032	public void deleteContact(Contact contact) {
1033		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1034		Element query = iq.query("jabber:iq:roster");
1035		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1036		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1037		replaceContactInConversation(contact.getJid(), null);
1038		databaseBackend.deleteContact(contact);
1039	}
1040
1041	public void updateAccount(Account account) {
1042		this.statusListener.onStatusChanged(account);
1043		databaseBackend.updateAccount(account);
1044		reconnectAccount(account, false);
1045		if (accountChangedListener != null)
1046			accountChangedListener.onAccountListChangedListener();
1047	}
1048
1049	public void deleteAccount(Account account) {
1050		if (account.getXmppConnection() != null) {
1051			this.disconnect(account, true);
1052		}
1053		databaseBackend.deleteAccount(account);
1054		this.accounts.remove(account);
1055		if (accountChangedListener != null)
1056			accountChangedListener.onAccountListChangedListener();
1057	}
1058
1059	public void setOnConversationListChangedListener(
1060			OnConversationListChangedListener listener) {
1061		this.convChangedListener = listener;
1062		this.convChangedListenerCount++;
1063		Log.d(LOGTAG,"registered on conv changed in backend ("+convChangedListenerCount+")");
1064	}
1065
1066	public void removeOnConversationListChangedListener() {
1067		this.convChangedListenerCount--;
1068		Log.d(LOGTAG,"someone on conv changed listener removed listener ("+convChangedListenerCount+")");
1069		if (this.convChangedListenerCount==0) {
1070			this.convChangedListener = null;
1071		}
1072	}
1073
1074	public void setOnAccountListChangedListener(
1075			OnAccountListChangedListener listener) {
1076		this.accountChangedListener = listener;
1077	}
1078
1079	public void removeOnAccountListChangedListener() {
1080		this.accountChangedListener = null;
1081	}
1082
1083	public void connectMultiModeConversations(Account account) {
1084		List<Conversation> conversations = getConversations();
1085		for (int i = 0; i < conversations.size(); i++) {
1086			Conversation conversation = conversations.get(i);
1087			if ((conversation.getMode() == Conversation.MODE_MULTI)
1088					&& (conversation.getAccount() == account)) {
1089				joinMuc(conversation);
1090			}
1091		}
1092	}
1093
1094	public void joinMuc(Conversation conversation) {
1095		String[] mucParts = conversation.getContactJid().split("/");
1096		String muc;
1097		String nick;
1098		if (mucParts.length == 2) {
1099			muc = mucParts[0];
1100			nick = mucParts[1];
1101		} else {
1102			muc = mucParts[0];
1103			nick = conversation.getAccount().getUsername();
1104		}
1105		PresencePacket packet = new PresencePacket();
1106		packet.setAttribute("to", muc + "/" + nick);
1107		Element x = new Element("x");
1108		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1109		if (conversation.getMessages().size() != 0) {
1110			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1111			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1112			x.addChild("history").setAttribute("seconds", diff + "");
1113		}
1114		packet.addChild(x);
1115		conversation.getAccount().getXmppConnection()
1116				.sendPresencePacket(packet);
1117	}
1118
1119	private OnRenameListener renameListener = null;
1120
1121	public void setOnRenameListener(OnRenameListener listener) {
1122		this.renameListener = listener;
1123	}
1124
1125	public void renameInMuc(final Conversation conversation, final String nick) {
1126		final MucOptions options = conversation.getMucOptions();
1127		if (options.online()) {
1128			options.setOnRenameListener(new OnRenameListener() {
1129
1130				@Override
1131				public void onRename(boolean success) {
1132					if (renameListener != null) {
1133						renameListener.onRename(success);
1134					}
1135					if (success) {
1136						databaseBackend.updateConversation(conversation);
1137					}
1138				}
1139			});
1140			options.flagAboutToRename();
1141			PresencePacket packet = new PresencePacket();
1142			packet.setAttribute("to",
1143					conversation.getContactJid().split("/")[0] + "/" + nick);
1144			packet.setAttribute("from", conversation.getAccount().getFullJid());
1145
1146			conversation.getAccount().getXmppConnection()
1147					.sendPresencePacket(packet, null);
1148		} else {
1149			String jid = conversation.getContactJid().split("/")[0] + "/"
1150					+ nick;
1151			conversation.setContactJid(jid);
1152			databaseBackend.updateConversation(conversation);
1153			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1154				joinMuc(conversation);
1155			}
1156		}
1157	}
1158
1159	public void leaveMuc(Conversation conversation) {
1160		PresencePacket packet = new PresencePacket();
1161		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1162		packet.setAttribute("from", conversation.getAccount().getFullJid());
1163		packet.setAttribute("type", "unavailable");
1164		Log.d(LOGTAG,"send leaving muc " + packet);
1165		conversation.getAccount().getXmppConnection()
1166				.sendPresencePacket(packet);
1167		conversation.getMucOptions().setOffline();
1168	}
1169
1170	public void disconnect(Account account, boolean force) {
1171		if ((account.getStatus() == Account.STATUS_ONLINE)
1172				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1173			if (!force) {
1174				List<Conversation> conversations = getConversations();
1175				for (int i = 0; i < conversations.size(); i++) {
1176					Conversation conversation = conversations.get(i);
1177					if (conversation.getAccount() == account) {
1178						if (conversation.getMode() == Conversation.MODE_MULTI) {
1179							leaveMuc(conversation);
1180						} else {
1181							conversation.endOtrIfNeeded();
1182						}
1183					}
1184				}
1185			}
1186			account.getXmppConnection().disconnect(force);
1187		}
1188	}
1189
1190	@Override
1191	public IBinder onBind(Intent intent) {
1192		return mBinder;
1193	}
1194
1195	public void updateContact(Contact contact) {
1196		databaseBackend.updateContact(contact);
1197		replaceContactInConversation(contact.getJid(), contact);
1198	}
1199
1200	public void updateMessage(Message message) {
1201		databaseBackend.updateMessage(message);
1202	}
1203
1204	public void createContact(Contact contact) {
1205		SharedPreferences sharedPref = PreferenceManager
1206				.getDefaultSharedPreferences(getApplicationContext());
1207		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1208		if (autoGrant) {
1209			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1210			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1211		}
1212		databaseBackend.createContact(contact);
1213		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1214		Element query = new Element("query");
1215		query.setAttribute("xmlns", "jabber:iq:roster");
1216		Element item = new Element("item");
1217		item.setAttribute("jid", contact.getJid());
1218		item.setAttribute("name", contact.getJid());
1219		query.addChild(item);
1220		iq.addChild(query);
1221		Account account = contact.getAccount();
1222		account.getXmppConnection().sendIqPacket(iq, null);
1223		if (autoGrant) {
1224			requestPresenceUpdatesFrom(contact);
1225		}
1226		replaceContactInConversation(contact.getJid(), contact);
1227	}
1228
1229	public void requestPresenceUpdatesFrom(Contact contact) {
1230		// Requesting a Subscription type=subscribe
1231		PresencePacket packet = new PresencePacket();
1232		packet.setAttribute("type", "subscribe");
1233		packet.setAttribute("to", contact.getJid());
1234		packet.setAttribute("from", contact.getAccount().getJid());
1235		Log.d(LOGTAG, packet.toString());
1236		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1237	}
1238
1239	public void stopPresenceUpdatesFrom(Contact contact) {
1240		// Unsubscribing type='unsubscribe'
1241		PresencePacket packet = new PresencePacket();
1242		packet.setAttribute("type", "unsubscribe");
1243		packet.setAttribute("to", contact.getJid());
1244		packet.setAttribute("from", contact.getAccount().getJid());
1245		Log.d(LOGTAG, packet.toString());
1246		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1247	}
1248
1249	public void stopPresenceUpdatesTo(Contact contact) {
1250		// Canceling a Subscription type=unsubscribed
1251		PresencePacket packet = new PresencePacket();
1252		packet.setAttribute("type", "unsubscribed");
1253		packet.setAttribute("to", contact.getJid());
1254		packet.setAttribute("from", contact.getAccount().getJid());
1255		Log.d(LOGTAG, packet.toString());
1256		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1257	}
1258
1259	public void sendPresenceUpdatesTo(Contact contact) {
1260		// type='subscribed'
1261		PresencePacket packet = new PresencePacket();
1262		packet.setAttribute("type", "subscribed");
1263		packet.setAttribute("to", contact.getJid());
1264		packet.setAttribute("from", contact.getAccount().getJid());
1265		Log.d(LOGTAG, packet.toString());
1266		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1267	}
1268
1269	public void sendPgpPresence(Account account, String signature) {
1270		PresencePacket packet = new PresencePacket();
1271		packet.setAttribute("from", account.getFullJid());
1272		Element status = new Element("status");
1273		status.setContent("online");
1274		packet.addChild(status);
1275		Element x = new Element("x");
1276		x.setAttribute("xmlns", "jabber:x:signed");
1277		x.setContent(signature);
1278		packet.addChild(x);
1279		account.getXmppConnection().sendPresencePacket(packet);
1280	}
1281
1282	public void generatePgpAnnouncement(Account account)
1283			throws PgpEngine.UserInputRequiredException {
1284		if (account.getStatus() == Account.STATUS_ONLINE) {
1285			String signature = getPgpEngine().generateSignature("online");
1286			account.setKey("pgp_signature", signature);
1287			databaseBackend.updateAccount(account);
1288			sendPgpPresence(account, signature);
1289		}
1290	}
1291
1292	public void updateConversation(Conversation conversation) {
1293		this.databaseBackend.updateConversation(conversation);
1294	}
1295
1296	public Contact findContact(String uuid) {
1297		Contact contact = this.databaseBackend.getContact(uuid);
1298		if (contact!=null) {
1299			for (Account account : getAccounts()) {
1300				if (contact.getAccountUuid().equals(account.getUuid())) {
1301					contact.setAccount(account);
1302				}
1303			}
1304		}
1305		return contact;
1306	}
1307
1308	public void removeOnTLSExceptionReceivedListener() {
1309		this.tlsException = null;
1310	}
1311
1312	// TODO dont let thread sleep but schedule wake up
1313	public void reconnectAccount(final Account account, final boolean force) {
1314		new Thread(new Runnable() {
1315
1316			@Override
1317			public void run() {
1318				if (account.getXmppConnection() != null) {
1319					disconnect(account, force);
1320				}
1321				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1322					if (account.getXmppConnection() == null) {
1323						account.setXmppConnection(createConnection(account));
1324					}
1325					Thread thread = new Thread(account.getXmppConnection());
1326					thread.start();
1327					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1328				}
1329			}
1330		}).start();
1331	}
1332
1333	public void updateConversationInGui() {
1334		if (convChangedListener != null) {
1335			convChangedListener.onConversationListChanged();
1336		}
1337	}
1338
1339	public void sendConversationSubject(Conversation conversation,
1340			String subject) {
1341		MessagePacket packet = new MessagePacket();
1342		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1343		packet.setTo(conversation.getContactJid().split("/")[0]);
1344		Element subjectChild = new Element("subject");
1345		subjectChild.setContent(subject);
1346		packet.addChild(subjectChild);
1347		packet.setFrom(conversation.getAccount().getJid());
1348		Account account = conversation.getAccount();
1349		if (account.getStatus() == Account.STATUS_ONLINE) {
1350			account.getXmppConnection().sendMessagePacket(packet);
1351		}
1352	}
1353
1354	public void inviteToConference(Conversation conversation,
1355			List<Contact> contacts) {
1356		for (Contact contact : contacts) {
1357			MessagePacket packet = new MessagePacket();
1358			packet.setTo(conversation.getContactJid().split("/")[0]);
1359			packet.setFrom(conversation.getAccount().getFullJid());
1360			Element x = new Element("x");
1361			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1362			Element invite = new Element("invite");
1363			invite.setAttribute("to", contact.getJid());
1364			x.addChild(invite);
1365			packet.addChild(x);
1366			Log.d(LOGTAG, packet.toString());
1367			conversation.getAccount().getXmppConnection()
1368					.sendMessagePacket(packet);
1369		}
1370
1371	}
1372	
1373	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1374		boolean marked = false;
1375		for(Conversation conversation : getConversations()) {
1376			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1377				for(Message message : conversation.getMessages()) {
1378					if (message.getUuid().equals(uuid)) {
1379						markMessage(message, status);
1380						marked = true;
1381						break;
1382					}
1383				}
1384				break;
1385			}
1386		}
1387		return marked;
1388	}
1389	
1390	public void markMessage(Message message, int status) {
1391		message.setStatus(status);
1392		databaseBackend.updateMessage(message);
1393		convChangedListener.onConversationListChanged();
1394	}
1395}