XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.text.ParseException;
   4import java.text.SimpleDateFormat;
   5import java.util.Collections;
   6import java.util.Comparator;
   7import java.util.Date;
   8import java.util.Hashtable;
   9import java.util.List;
  10import java.util.Locale;
  11import java.util.Random;
  12
  13import org.openintents.openpgp.util.OpenPgpApi;
  14import org.openintents.openpgp.util.OpenPgpServiceConnection;
  15
  16import net.java.otr4j.OtrException;
  17import net.java.otr4j.session.Session;
  18import net.java.otr4j.session.SessionStatus;
  19
  20import eu.siacs.conversations.crypto.PgpEngine;
  21import eu.siacs.conversations.crypto.PgpEngine.OpenPgpException;
  22import eu.siacs.conversations.entities.Account;
  23import eu.siacs.conversations.entities.Contact;
  24import eu.siacs.conversations.entities.Conversation;
  25import eu.siacs.conversations.entities.Message;
  26import eu.siacs.conversations.entities.MucOptions;
  27import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  28import eu.siacs.conversations.entities.Presences;
  29import eu.siacs.conversations.persistance.DatabaseBackend;
  30import eu.siacs.conversations.persistance.FileBackend;
  31import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  32import eu.siacs.conversations.ui.OnAccountListChangedListener;
  33import eu.siacs.conversations.ui.OnConversationListChangedListener;
  34import eu.siacs.conversations.ui.OnRosterFetchedListener;
  35import eu.siacs.conversations.utils.ExceptionHelper;
  36import eu.siacs.conversations.utils.MessageParser;
  37import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  38import eu.siacs.conversations.utils.PhoneHelper;
  39import eu.siacs.conversations.utils.UIHelper;
  40import eu.siacs.conversations.xml.Element;
  41import eu.siacs.conversations.xmpp.OnBindListener;
  42import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  43import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  44import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  45import eu.siacs.conversations.xmpp.OnStatusChanged;
  46import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  47import eu.siacs.conversations.xmpp.XmppConnection;
  48import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  49import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  50import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  51import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  52import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  53import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  54import android.app.AlarmManager;
  55import android.app.PendingIntent;
  56import android.app.Service;
  57import android.content.Context;
  58import android.content.Intent;
  59import android.content.SharedPreferences;
  60import android.database.ContentObserver;
  61import android.database.DatabaseUtils;
  62import android.net.ConnectivityManager;
  63import android.net.NetworkInfo;
  64import android.net.Uri;
  65import android.os.Binder;
  66import android.os.Bundle;
  67import android.os.IBinder;
  68import android.os.PowerManager;
  69import android.os.PowerManager.WakeLock;
  70import android.os.SystemClock;
  71import android.preference.PreferenceManager;
  72import android.provider.ContactsContract;
  73import android.util.Log;
  74
  75public class XmppConnectionService extends Service {
  76
  77	protected static final String LOGTAG = "xmppService";
  78	public DatabaseBackend databaseBackend;
  79	private FileBackend fileBackend;
  80
  81	public long startDate;
  82
  83	private static final int PING_MAX_INTERVAL = 300;
  84	private static final int PING_MIN_INTERVAL = 10;
  85	private static final int PING_TIMEOUT = 5;
  86	private static final int CONNECT_TIMEOUT = 60;
  87	private static final long CARBON_GRACE_PERIOD = 60000L;
  88
  89	private List<Account> accounts;
  90	private List<Conversation> conversations = null;
  91	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(this);
  92	
  93	public OnConversationListChangedListener convChangedListener = null;
  94	private int convChangedListenerCount = 0;
  95	private OnAccountListChangedListener accountChangedListener = null;
  96	private OnTLSExceptionReceived tlsException = null;
  97
  98	public void setOnTLSExceptionReceivedListener(
  99			OnTLSExceptionReceived listener) {
 100		tlsException = listener;
 101	}
 102
 103	private Random mRandom = new Random(System.currentTimeMillis());
 104
 105	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 106
 107	private ContentObserver contactObserver = new ContentObserver(null) {
 108		@Override
 109		public void onChange(boolean selfChange) {
 110			super.onChange(selfChange);
 111			Log.d(LOGTAG, "contact list has changed");
 112			mergePhoneContactsWithRoster(null);
 113		}
 114	};
 115
 116	private XmppConnectionService service = this;
 117
 118	private final IBinder mBinder = new XmppConnectionBinder();
 119	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 120
 121		@Override
 122		public void onMessagePacketReceived(Account account,
 123				MessagePacket packet) {
 124			Message message = null;
 125			boolean notify = true;
 126			if(getPreferences().getBoolean("notification_grace_period_after_carbon_received", true)){
 127				notify=(SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 128			}
 129
 130			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 131				String pgpBody = MessageParser.getPgpBody(packet);
 132				if (pgpBody != null) {
 133					message = MessageParser.parsePgpChat(pgpBody, packet,
 134							account, service);
 135					message.markUnread();
 136				} else if ((packet.getBody()!=null) && (packet.getBody().startsWith("?OTR"))) {
 137					message = MessageParser.parseOtrChat(packet, account,
 138							service);
 139					if (message != null) {
 140						message.markUnread();
 141					}
 142				} else if (packet.hasChild("body")) {
 143					message = MessageParser.parsePlainTextChat(packet, account,
 144							service);
 145					message.markUnread();
 146				} else if (packet.hasChild("received")
 147						|| (packet.hasChild("sent"))) {
 148					message = MessageParser.parseCarbonMessage(packet, account,
 149							service);
 150					if (message != null) {
 151						if (message.getStatus() == Message.STATUS_SEND) {
 152							lastCarbonMessageReceived = SystemClock.elapsedRealtime();
 153							notify = false;
 154							message.getConversation().markRead();
 155						} else {
 156							message.markUnread();
 157						}
 158					}
 159				}
 160
 161			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 162				message = MessageParser
 163						.parseGroupchat(packet, account, service);
 164				if (message != null) {
 165					if (message.getStatus() == Message.STATUS_RECIEVED) {
 166						message.markUnread();
 167					} else {
 168						message.getConversation().markRead();
 169						notify = false;
 170					}
 171				}
 172			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 173				MessageParser.parseError(packet, account, service);
 174				return;
 175			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 176				if (packet.hasChild("x")) {
 177					Element x = packet.findChild("x");
 178					if (x.hasChild("invite")) {
 179						findOrCreateConversation(account, packet.getFrom(),
 180								true);
 181						if (convChangedListener != null) {
 182							convChangedListener.onConversationListChanged();
 183						}
 184						Log.d(LOGTAG,
 185								"invitation received to " + packet.getFrom());
 186					}
 187
 188				} else {
 189					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 190				}
 191			}
 192			if ((message == null) || (message.getBody() == null)) {
 193				return;
 194			}
 195			if (packet.hasChild("delay")) {
 196				try {
 197					String stamp = packet.findChild("delay").getAttribute(
 198							"stamp");
 199					stamp = stamp.replace("Z", "+0000");
 200					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 201							.parse(stamp);
 202					message.setTime(date.getTime());
 203				} catch (ParseException e) {
 204					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 205				}
 206			}
 207			Conversation conversation = message.getConversation();
 208			conversation.getMessages().add(message);
 209			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 210				databaseBackend.createMessage(message);
 211			}
 212			if (convChangedListener != null) {
 213				convChangedListener.onConversationListChanged();
 214			} else {
 215				UIHelper.updateNotification(getApplicationContext(),
 216						getConversations(), message.getConversation(), notify);
 217			}
 218		}
 219	};
 220	private OnStatusChanged statusListener = new OnStatusChanged() {
 221
 222		@Override
 223		public void onStatusChanged(Account account) {
 224			if (accountChangedListener != null) {
 225				accountChangedListener.onAccountListChangedListener();
 226			}
 227			if (account.getStatus() == Account.STATUS_ONLINE) {
 228				List<Conversation> conversations = getConversations();
 229				for (int i = 0; i < conversations.size(); ++i) {
 230					if (conversations.get(i).getAccount() == account) {
 231						sendUnsendMessages(conversations.get(i));
 232					}
 233				}
 234				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 235			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 236				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 237					int timeToReconnect = mRandom.nextInt(50) + 10;
 238					scheduleWakeupCall(timeToReconnect, false);
 239				}
 240
 241			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 242				databaseBackend.updateAccount(account);
 243				reconnectAccount(account, true);
 244			} else {
 245				UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 246			}
 247		}
 248	};
 249
 250	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 251
 252		@Override
 253		public void onPresencePacketReceived(Account account,
 254				PresencePacket packet) {
 255			if (packet.hasChild("x","http://jabber.org/protocol/muc#user")) {
 256				Conversation muc = findMuc(
 257						packet.getAttribute("from").split("/")[0], account);
 258				if (muc != null) {
 259					muc.getMucOptions().processPacket(packet);
 260				} else {
 261					Log.d(LOGTAG,account.getJid()+": could not find muc for received muc package "+packet.toString());
 262				}
 263			} else if (packet.hasChild("x","http://jabber.org/protocol/muc")) {
 264				Conversation muc = findMuc(packet.getAttribute("from").split("/")[0], account);
 265				if (muc != null) {
 266					Log.d(LOGTAG,account.getJid()+": reading muc status packet "+packet.toString());
 267					int error = muc.getMucOptions().getError();
 268					muc.getMucOptions().processPacket(packet);
 269					if ((muc.getMucOptions().getError() != error)
 270							&& (convChangedListener != null)) {
 271						Log.d(LOGTAG, "muc error status changed");
 272						convChangedListener.onConversationListChanged();
 273					}
 274				}
 275			} else {
 276				String[] fromParts = packet.getAttribute("from").split("/");
 277				String type = packet.getAttribute("type");
 278				if (fromParts[0].equals(account.getJid())) {
 279					if (fromParts.length==2) {
 280						if (type == null) {
 281							account.updatePresence(fromParts[1],Presences.parseShow(packet.findChild("show")));
 282						} else if (type.equals("unavailable")) {
 283							account.removePresence(fromParts[1]);
 284						}
 285					}
 286						
 287				} else {
 288					Contact contact = findContact(account, fromParts[0]);
 289					if (contact == null) {
 290						if ("subscribe".equals(type)) {
 291							account.getXmppConnection().addPendingSubscription(fromParts[0]);
 292						} else {
 293							//Log.d(LOGTAG,packet.getFrom()+ " could not be found");
 294						}
 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							replaceContactInConversation(account,contact.getJid(), contact);
 320							databaseBackend.updateContact(contact,true);
 321						} else {
 322							//Log.d(LOGTAG,"presence without resource "+packet.toString());
 323						}
 324					} else if (type.equals("unavailable")) {
 325						if (fromParts.length != 2) {
 326							contact.clearPresences();
 327						} else {
 328							contact.removePresence(fromParts[1]);
 329						}
 330						replaceContactInConversation(account,contact.getJid(), contact);
 331						databaseBackend.updateContact(contact,true);
 332					} else if (type.equals("subscribe")) {
 333						Log.d(LOGTAG,"received subscribe packet from "+packet.getFrom());
 334						if (contact
 335								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 336							Log.d(LOGTAG,"preemptive grant; granting");
 337							sendPresenceUpdatesTo(contact);
 338							contact.setSubscriptionOption(Contact.Subscription.FROM);
 339							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 340							replaceContactInConversation(account,contact.getJid(),
 341									contact);
 342							databaseBackend.updateContact(contact,false);
 343							if ((contact
 344									.getSubscriptionOption(Contact.Subscription.ASKING))
 345									&& (!contact
 346											.getSubscriptionOption(Contact.Subscription.TO))) {
 347								requestPresenceUpdatesFrom(contact);
 348							}
 349						} else {
 350							account.getXmppConnection().addPendingSubscription(fromParts[0]);
 351						}
 352					} else {
 353						//Log.d(LOGTAG, packet.toString());
 354					}
 355				}
 356			}
 357		}
 358	};
 359
 360	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 361
 362		@Override
 363		public void onIqPacketReceived(Account account, IqPacket packet) {
 364			if (packet.hasChild("query")) {
 365				Element query = packet.findChild("query");
 366				String xmlns = query.getAttribute("xmlns");
 367				if ((xmlns != null) && (xmlns.equals("jabber:iq:roster"))) {
 368					processRosterItems(account, query);
 369					mergePhoneContactsWithRoster(null);
 370				}
 371			} else if (packet.hasChild("open","http://jabber.org/protocol/ibb")||packet.hasChild("data","http://jabber.org/protocol/ibb")) {
 372				XmppConnectionService.this.mJingleConnectionManager.deliverIbbPacket(account,packet);
 373			} else {
 374				Log.d(LOGTAG,"iq packet arrived "+packet.toString());
 375			}
 376		}
 377	};
 378	
 379	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 380		
 381		@Override
 382		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 383			mJingleConnectionManager.deliverPacket(account, packet);
 384		}
 385	};
 386
 387	private OpenPgpServiceConnection pgpServiceConnection;
 388	private PgpEngine mPgpEngine = null;
 389	private Intent pingIntent;
 390	private PendingIntent pendingPingIntent = null;
 391	private WakeLock wakeLock;
 392	private PowerManager pm;
 393
 394	public PgpEngine getPgpEngine() {
 395		if (pgpServiceConnection.isBound()) {
 396			if (this.mPgpEngine == null) {
 397				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 398						getApplicationContext(),
 399						pgpServiceConnection.getService()));
 400			}
 401			return mPgpEngine;
 402		} else {
 403			return null;
 404		}
 405
 406	}
 407
 408	public FileBackend getFileBackend() {
 409		return this.fileBackend;
 410	}
 411	
 412	public void attachImageToConversation(final Conversation conversation, final String presence, final Uri uri) {
 413		new Thread(new Runnable() {
 414			
 415			@Override
 416			public void run() {
 417				Message message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 418				message.setPresence(presence);
 419				message.setType(Message.TYPE_IMAGE);
 420				message.setStatus(Message.STATUS_PREPARING);
 421				conversation.getMessages().add(message);
 422				if (convChangedListener!=null) {
 423					convChangedListener.onConversationListChanged();
 424				}
 425				getFileBackend().copyImageToPrivateStorage(message, uri);
 426				message.setStatus(Message.STATUS_OFFERED);
 427				if (convChangedListener!=null) {
 428					convChangedListener.onConversationListChanged();
 429				}
 430				sendMessage(message, null);
 431			}
 432		}).start();
 433	}
 434	
 435	
 436	protected Conversation findMuc(String name, Account account) {
 437		for (Conversation conversation : this.conversations) {
 438			if (conversation.getContactJid().split("/")[0].equals(name)
 439					&& (conversation.getAccount() == account)) {
 440				return conversation;
 441			}
 442		}
 443		return null;
 444	}
 445
 446	private void processRosterItems(Account account, Element elements) {
 447		String version = elements.getAttribute("ver");
 448		if (version != null) {
 449			account.setRosterVersion(version);
 450			databaseBackend.updateAccount(account);
 451		}
 452		for (Element item : elements.getChildren()) {
 453			if (item.getName().equals("item")) {
 454				String jid = item.getAttribute("jid");
 455				String subscription = item.getAttribute("subscription");
 456				Contact contact = databaseBackend.findContact(account, jid);
 457				if (contact == null) {
 458					if (!subscription.equals("remove")) {
 459						String name = item.getAttribute("name");
 460						if (name == null) {
 461							name = jid.split("@")[0];
 462						}
 463						contact = new Contact(account, name, jid, null);
 464						contact.parseSubscriptionFromElement(item);
 465						databaseBackend.createContact(contact);
 466					}
 467				} else {
 468					if (subscription.equals("remove")) {
 469						databaseBackend.deleteContact(contact);
 470						replaceContactInConversation(account,contact.getJid(), null);
 471					} else {
 472						contact.parseSubscriptionFromElement(item);
 473						databaseBackend.updateContact(contact,false);
 474						replaceContactInConversation(account,contact.getJid(), contact);
 475					}
 476				}
 477			}
 478		}
 479	}
 480
 481	private void replaceContactInConversation(Account account, String jid, Contact contact) {
 482		List<Conversation> conversations = getConversations();
 483		for (Conversation c : conversations) {
 484			if (c.getContactJid().equals(jid)&&(c.getAccount()==account)) {
 485				c.setContact(contact);
 486				break;
 487			}
 488		}
 489	}
 490
 491	public class XmppConnectionBinder extends Binder {
 492		public XmppConnectionService getService() {
 493			return XmppConnectionService.this;
 494		}
 495	}
 496
 497	@Override
 498	public int onStartCommand(Intent intent, int flags, int startId) {
 499		this.wakeLock.acquire();
 500		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 501		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 502				.getSystemService(Context.CONNECTIVITY_SERVICE);
 503		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 504		boolean isConnected = activeNetwork != null
 505				&& activeNetwork.isConnected();
 506
 507		for (Account account : accounts) {
 508			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 509				if (!isConnected) {
 510					account.setStatus(Account.STATUS_NO_INTERNET);
 511					if (statusListener != null) {
 512						statusListener.onStatusChanged(account);
 513					}
 514				} else {
 515					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 516						account.setStatus(Account.STATUS_OFFLINE);
 517						if (statusListener != null) {
 518							statusListener.onStatusChanged(account);
 519						}
 520					}
 521
 522					// TODO 3 remaining cases
 523					if (account.getStatus() == Account.STATUS_ONLINE) {
 524						long lastReceived = account.getXmppConnection().lastPaketReceived;
 525						long lastSent = account.getXmppConnection().lastPingSent;
 526						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 527							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 528							this.reconnectAccount(account, true);
 529						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 530							account.getXmppConnection().sendPing();
 531							account.getXmppConnection().lastPingSent = SystemClock
 532									.elapsedRealtime();
 533							this.scheduleWakeupCall(2, false);
 534						}
 535					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 536						if (account.getXmppConnection() == null) {
 537							account.setXmppConnection(this
 538									.createConnection(account));
 539						}
 540						account.getXmppConnection().lastPingSent = SystemClock
 541								.elapsedRealtime();
 542						new Thread(account.getXmppConnection()).start();
 543					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 544							&& ((SystemClock.elapsedRealtime() - account
 545									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 546						Log.d(LOGTAG, account.getJid()
 547								+ ": time out during connect reconnecting");
 548						reconnectAccount(account, true);
 549					} else {
 550						Log.d(LOGTAG,
 551								"seconds since last connect:"
 552										+ ((SystemClock.elapsedRealtime() - account
 553												.getXmppConnection().lastConnect) / 1000));
 554						Log.d(LOGTAG,
 555								account.getJid() + ": status="
 556										+ account.getStatus());
 557						// TODO notify user of ssl cert problem or auth problem
 558						// or what ever
 559					}
 560					// in any case. reschedule wakup call
 561					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 562				}
 563				if (accountChangedListener != null) {
 564					accountChangedListener.onAccountListChangedListener();
 565				}
 566			}
 567		}
 568		if (wakeLock.isHeld()) {
 569			wakeLock.release();
 570		}
 571		return START_STICKY;
 572	}
 573
 574	@Override
 575	public void onCreate() {
 576		ExceptionHelper.init(getApplicationContext());
 577		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 578		this.fileBackend = new FileBackend(getApplicationContext());
 579		this.accounts = databaseBackend.getAccounts();
 580
 581		this.getConversations();
 582		
 583		getContentResolver().registerContentObserver(
 584				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 585		this.pgpServiceConnection = new OpenPgpServiceConnection(
 586				getApplicationContext(), "org.sufficientlysecure.keychain");
 587		this.pgpServiceConnection.bindToService();
 588
 589		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 590		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 591				"XmppConnectionService");
 592	}
 593
 594	@Override
 595	public void onDestroy() {
 596		super.onDestroy();
 597		for (Account account : accounts) {
 598			if (account.getXmppConnection() != null) {
 599				disconnect(account, true);
 600			}
 601		}
 602	}
 603
 604	protected void scheduleWakeupCall(int seconds, boolean ping) {
 605		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 606		Context context = getApplicationContext();
 607		AlarmManager alarmManager = (AlarmManager) context
 608				.getSystemService(Context.ALARM_SERVICE);
 609
 610		if (ping) {
 611			if (this.pingIntent == null) {
 612				this.pingIntent = new Intent(context, EventReceiver.class);
 613				this.pingIntent.setAction("ping");
 614				this.pingIntent.putExtra("time", timeToWake);
 615				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 616						this.pingIntent, 0);
 617				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 618						timeToWake, pendingPingIntent);
 619				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 620			} else {
 621				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 622				if (scheduledTime < SystemClock.elapsedRealtime()
 623						|| (scheduledTime > timeToWake)) {
 624					this.pingIntent.putExtra("time", timeToWake);
 625					alarmManager.cancel(this.pendingPingIntent);
 626					this.pendingPingIntent = PendingIntent.getBroadcast(
 627							context, 0, this.pingIntent, 0);
 628					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 629							timeToWake, pendingPingIntent);
 630					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 631				}
 632			}
 633		} else {
 634			Intent intent = new Intent(context, EventReceiver.class);
 635			intent.setAction("ping_check");
 636			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 637					intent, 0);
 638			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 639					alarmIntent);
 640		}
 641
 642	}
 643
 644	public XmppConnection createConnection(Account account) {
 645		SharedPreferences sharedPref = getPreferences();
 646		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 647		XmppConnection connection = new XmppConnection(account, this.pm);
 648		connection.setOnMessagePacketReceivedListener(this.messageListener);
 649		connection.setOnStatusChangedListener(this.statusListener);
 650		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 651		connection
 652				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 653		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 654		connection
 655				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 656
 657					@Override
 658					public void onTLSExceptionReceived(String fingerprint,
 659							Account account) {
 660						Log.d(LOGTAG, "tls exception arrived in service");
 661						if (tlsException != null) {
 662							tlsException.onTLSExceptionReceived(fingerprint,
 663									account);
 664						}
 665					}
 666				});
 667		connection.setOnBindListener(new OnBindListener() {
 668
 669			@Override
 670			public void onBind(Account account) {
 671				databaseBackend.clearPresences(account);
 672				account.clearPresences(); // self presences
 673				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 674					updateRoster(account, null);
 675				}
 676				connectMultiModeConversations(account);
 677				if (convChangedListener != null) {
 678					convChangedListener.onConversationListChanged();
 679				}
 680			}
 681		});
 682		return connection;
 683	}
 684
 685	synchronized public void sendMessage(Message message, String presence) {
 686		Account account = message.getConversation().getAccount();
 687		Conversation conv = message.getConversation();
 688		MessagePacket packet = null;
 689		boolean saveInDb = false;
 690		boolean addToConversation = false;
 691		boolean send = false;
 692		if (account.getStatus() == Account.STATUS_ONLINE) {
 693			if (message.getType() == Message.TYPE_IMAGE) {
 694				mJingleConnectionManager.createNewConnection(message);
 695			} else {
 696				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 697					if (!conv.hasValidOtrSession()) {
 698						// starting otr session. messages will be send later
 699						conv.startOtrSession(getApplicationContext(), presence,true);
 700					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 701						// otr session aleary exists, creating message packet
 702						// accordingly
 703						packet = prepareMessagePacket(account, message,
 704								conv.getOtrSession());
 705						send = true;
 706						message.setStatus(Message.STATUS_SEND);
 707					}
 708					saveInDb = true;
 709					addToConversation = true;
 710				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 711					message.getConversation().endOtrIfNeeded();
 712					long keyId = message.getConversation().getContact()
 713							.getPgpKeyId();
 714					packet = new MessagePacket();
 715					packet.setType(MessagePacket.TYPE_CHAT);
 716					packet.setFrom(message.getConversation().getAccount()
 717							.getFullJid());
 718					packet.setTo(message.getCounterpart());
 719					packet.setBody("This is an XEP-0027 encryted message");
 720					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 721					message.setStatus(Message.STATUS_SEND);
 722					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 723					saveInDb = true;
 724					addToConversation = true;
 725					send = true;
 726				} else {
 727					message.getConversation().endOtrIfNeeded();
 728					// don't encrypt
 729					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 730						message.setStatus(Message.STATUS_SEND);
 731						saveInDb = true;
 732						addToConversation = true;
 733					}
 734					packet = prepareMessagePacket(account, message, null);
 735					send = true;
 736				}
 737			}
 738		} else {
 739			// account is offline
 740			saveInDb = true;
 741			addToConversation = true;
 742
 743		}
 744		if (saveInDb) {
 745			databaseBackend.createMessage(message);
 746		}
 747		if (addToConversation) {
 748			conv.getMessages().add(message);
 749			if (convChangedListener != null) {
 750				convChangedListener.onConversationListChanged();
 751			}
 752		}
 753		if ((send)&&(packet!=null)) {
 754			account.getXmppConnection().sendMessagePacket(packet);
 755		}
 756
 757	}
 758
 759	private void sendUnsendMessages(Conversation conversation) {
 760		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 761			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 762				Message message = conversation.getMessages().get(i);
 763				MessagePacket packet = prepareMessagePacket(
 764						conversation.getAccount(), message, null);
 765				conversation.getAccount().getXmppConnection()
 766						.sendMessagePacket(packet);
 767				message.setStatus(Message.STATUS_SEND);
 768				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 769					databaseBackend.updateMessage(message);
 770				} else {
 771					databaseBackend.deleteMessage(message);
 772					conversation.getMessages().remove(i);
 773					i--;
 774				}
 775			}
 776		}
 777	}
 778
 779	public MessagePacket prepareMessagePacket(Account account, Message message,
 780			Session otrSession) {
 781		MessagePacket packet = new MessagePacket();
 782		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 783			packet.setType(MessagePacket.TYPE_CHAT);
 784			if (otrSession != null) {
 785				try {
 786					packet.setBody(otrSession.transformSending(message
 787							.getBody()));
 788				} catch (OtrException e) {
 789					Log.d(LOGTAG,
 790							account.getJid()
 791									+ ": could not encrypt message to "
 792									+ message.getCounterpart());
 793				}
 794				packet.addChild("private","urn:xmpp:carbons:2");
 795				packet.addChild("no-copy","urn:xmpp:hints");
 796				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 797						+ otrSession.getSessionID().getUserID());
 798				packet.setFrom(account.getFullJid());
 799			} else {
 800				packet.setBody(message.getBody());
 801				packet.setTo(message.getCounterpart());
 802				packet.setFrom(account.getJid());
 803			}
 804		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 805			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 806			packet.setBody(message.getBody());
 807			packet.setTo(message.getCounterpart().split("/")[0]);
 808			packet.setFrom(account.getJid());
 809		}
 810		packet.setId(message.getUuid());
 811		return packet;
 812	}
 813
 814	private void getRoster(Account account,
 815			final OnRosterFetchedListener listener) {
 816		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 817		for (int i = 0; i < contacts.size(); ++i) {
 818			contacts.get(i).setAccount(account);
 819		}
 820		if (listener != null) {
 821			listener.onRosterFetched(contacts);
 822		}
 823	}
 824
 825	public List<Contact> getRoster(Account account) {
 826		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 827		for (int i = 0; i < contacts.size(); ++i) {
 828			contacts.get(i).setAccount(account);
 829		}
 830		return contacts;
 831	}
 832
 833	public void updateRoster(final Account account,
 834			final OnRosterFetchedListener listener) {
 835		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 836		if (!"".equals(account.getRosterVersion())) {
 837			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 838					+ account.getRosterVersion());
 839		} else {
 840			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 841		}
 842		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 843		account.getXmppConnection().sendIqPacket(iqPacket,
 844				new OnIqPacketReceived() {
 845
 846					@Override
 847					public void onIqPacketReceived(final Account account,
 848							IqPacket packet) {
 849						Element roster = packet.findChild("query");
 850						if (roster != null) {
 851							Log.d(LOGTAG, account.getJid()
 852									+ ": processing roster");
 853							processRosterItems(account, roster);
 854							StringBuilder mWhere = new StringBuilder();
 855							mWhere.append("jid NOT IN(");
 856							List<Element> items = roster.getChildren();
 857							for (int i = 0; i < items.size(); ++i) {
 858								mWhere.append(DatabaseUtils
 859										.sqlEscapeString(items.get(i)
 860												.getAttribute("jid")));
 861								if (i != items.size() - 1) {
 862									mWhere.append(",");
 863								}
 864							}
 865							mWhere.append(") and accountUuid = \"");
 866							mWhere.append(account.getUuid());
 867							mWhere.append("\"");
 868							List<Contact> contactsToDelete = databaseBackend
 869									.getContacts(mWhere.toString());
 870							for (Contact contact : contactsToDelete) {
 871								databaseBackend.deleteContact(contact);
 872								replaceContactInConversation(account,contact.getJid(),
 873										null);
 874							}
 875
 876						} else {
 877							Log.d(LOGTAG, account.getJid()
 878									+ ": empty roster returend");
 879						}
 880						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 881
 882							@Override
 883							public void phoneContactsMerged() {
 884								if (listener != null) {
 885									getRoster(account, listener);
 886								}
 887							}
 888						});
 889					}
 890				});
 891	}
 892
 893	public void mergePhoneContactsWithRoster(
 894			final OnPhoneContactsMerged listener) {
 895		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 896				new OnPhoneContactsLoadedListener() {
 897					@Override
 898					public void onPhoneContactsLoaded(
 899							Hashtable<String, Bundle> phoneContacts) {
 900						List<Contact> contacts = databaseBackend
 901								.getContactsByAccount(null);
 902						for (int i = 0; i < contacts.size(); ++i) {
 903							Contact contact = contacts.get(i);
 904							if (phoneContacts.containsKey(contact.getJid())) {
 905								Bundle phoneContact = phoneContacts.get(contact
 906										.getJid());
 907								String systemAccount = phoneContact
 908										.getInt("phoneid")
 909										+ "#"
 910										+ phoneContact.getString("lookup");
 911								contact.setSystemAccount(systemAccount);
 912								contact.setPhotoUri(phoneContact
 913										.getString("photouri"));
 914								contact.setDisplayName(phoneContact
 915										.getString("displayname"));
 916								databaseBackend.updateContact(contact,false);
 917								replaceContactInConversation(contact.getAccount(),contact.getJid(),
 918										contact);
 919							} else {
 920								if ((contact.getSystemAccount() != null)
 921										|| (contact.getProfilePhoto() != null)) {
 922									contact.setSystemAccount(null);
 923									contact.setPhotoUri(null);
 924									databaseBackend.updateContact(contact,false);
 925									replaceContactInConversation(contact.getAccount(),
 926											contact.getJid(), contact);
 927								}
 928							}
 929						}
 930						if (listener != null) {
 931							listener.phoneContactsMerged();
 932						}
 933					}
 934				});
 935	}
 936
 937	public List<Conversation> getConversations() {
 938		if (this.conversations == null) {
 939			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 940			for (Account account : this.accounts) {
 941				accountLookupTable.put(account.getUuid(), account);
 942			}
 943			this.conversations = databaseBackend
 944					.getConversations(Conversation.STATUS_AVAILABLE);
 945			for (Conversation conv : this.conversations) {
 946				Account account = accountLookupTable.get(conv.getAccountUuid());
 947				conv.setAccount(account);
 948				conv.setContact(findContact(account, conv.getContactJid()));
 949				conv.setMessages(databaseBackend.getMessages(conv, 50));
 950			}
 951		}
 952		Collections.sort(this.conversations, new Comparator<Conversation>() {
 953			@Override
 954			public int compare(Conversation lhs, Conversation rhs) {
 955				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 956						.getLatestMessage().getTimeSent());
 957			}
 958		});
 959		return this.conversations;
 960	}
 961
 962	public List<Account> getAccounts() {
 963		return this.accounts;
 964	}
 965
 966	public Contact findContact(Account account, String jid) {
 967		Contact contact = databaseBackend.findContact(account, jid);
 968		if (contact != null) {
 969			contact.setAccount(account);
 970		}
 971		return contact;
 972	}
 973
 974	public Conversation findOrCreateConversation(Account account, String jid,
 975			boolean muc) {
 976		for (Conversation conv : this.getConversations()) {
 977			if ((conv.getAccount().equals(account))
 978					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 979				return conv;
 980			}
 981		}
 982		Conversation conversation = databaseBackend.findConversation(account,
 983				jid);
 984		if (conversation != null) {
 985			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 986			conversation.setAccount(account);
 987			if (muc) {
 988				conversation.setMode(Conversation.MODE_MULTI);
 989			} else {
 990				conversation.setMode(Conversation.MODE_SINGLE);
 991			}
 992			conversation.setMessages(databaseBackend.getMessages(conversation,
 993					50));
 994			this.databaseBackend.updateConversation(conversation);
 995			conversation.setContact(findContact(account,
 996					conversation.getContactJid()));
 997		} else {
 998			String conversationName;
 999			Contact contact = findContact(account, jid);
1000			if (contact != null) {
1001				conversationName = contact.getDisplayName();
1002			} else {
1003				conversationName = jid.split("@")[0];
1004			}
1005			if (muc) {
1006				conversation = new Conversation(conversationName, account, jid,
1007						Conversation.MODE_MULTI);
1008			} else {
1009				conversation = new Conversation(conversationName, account, jid,
1010						Conversation.MODE_SINGLE);
1011			}
1012			conversation.setContact(contact);
1013			this.databaseBackend.createConversation(conversation);
1014		}
1015		this.conversations.add(conversation);
1016		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1017			joinMuc(conversation);
1018		}
1019		if (this.convChangedListener != null) {
1020			this.convChangedListener.onConversationListChanged();
1021		}
1022		return conversation;
1023	}
1024
1025	public void archiveConversation(Conversation conversation) {
1026		if (conversation.getMode() == Conversation.MODE_MULTI) {
1027			leaveMuc(conversation);
1028		} else {
1029			conversation.endOtrIfNeeded();
1030		}
1031		this.databaseBackend.updateConversation(conversation);
1032		this.conversations.remove(conversation);
1033		if (this.convChangedListener != null) {
1034			this.convChangedListener.onConversationListChanged();
1035		}
1036	}
1037	
1038	public void clearConversationHistory(Conversation conversation) {
1039		this.databaseBackend.deleteMessagesInConversation(conversation);
1040		this.fileBackend.removeFiles(conversation);
1041		conversation.getMessages().clear();
1042		if (this.convChangedListener != null) {
1043			this.convChangedListener.onConversationListChanged();
1044		}
1045	}
1046
1047	public int getConversationCount() {
1048		return this.databaseBackend.getConversationCount();
1049	}
1050
1051	public void createAccount(Account account) {
1052		databaseBackend.createAccount(account);
1053		this.accounts.add(account);
1054		this.reconnectAccount(account, false);
1055		if (accountChangedListener != null)
1056			accountChangedListener.onAccountListChangedListener();
1057	}
1058
1059	public void deleteContact(Contact contact) {
1060		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1061		Element query = iq.query("jabber:iq:roster");
1062		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1063		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1064		replaceContactInConversation(contact.getAccount(),contact.getJid(), null);
1065		databaseBackend.deleteContact(contact);
1066	}
1067
1068	public void updateAccount(Account account) {
1069		this.statusListener.onStatusChanged(account);
1070		databaseBackend.updateAccount(account);
1071		reconnectAccount(account, false);
1072		if (accountChangedListener != null)
1073			accountChangedListener.onAccountListChangedListener();
1074	}
1075
1076	public void deleteAccount(Account account) {
1077		if (account.getXmppConnection() != null) {
1078			this.disconnect(account, true);
1079		}
1080		databaseBackend.deleteAccount(account);
1081		this.accounts.remove(account);
1082		if (accountChangedListener != null)
1083			accountChangedListener.onAccountListChangedListener();
1084	}
1085
1086	public void setOnConversationListChangedListener(
1087			OnConversationListChangedListener listener) {
1088		this.convChangedListener = listener;
1089		this.convChangedListenerCount++;
1090	}
1091
1092	public void removeOnConversationListChangedListener() {
1093		this.convChangedListenerCount--;
1094		if (this.convChangedListenerCount==0) {
1095			this.convChangedListener = null;
1096		}
1097	}
1098
1099	public void setOnAccountListChangedListener(
1100			OnAccountListChangedListener listener) {
1101		this.accountChangedListener = listener;
1102	}
1103
1104	public void removeOnAccountListChangedListener() {
1105		this.accountChangedListener = null;
1106	}
1107
1108	public void connectMultiModeConversations(Account account) {
1109		List<Conversation> conversations = getConversations();
1110		for (int i = 0; i < conversations.size(); i++) {
1111			Conversation conversation = conversations.get(i);
1112			if ((conversation.getMode() == Conversation.MODE_MULTI)
1113					&& (conversation.getAccount() == account)) {
1114				joinMuc(conversation);
1115			}
1116		}
1117	}
1118
1119	public void joinMuc(Conversation conversation) {
1120		String[] mucParts = conversation.getContactJid().split("/");
1121		String muc;
1122		String nick;
1123		if (mucParts.length == 2) {
1124			muc = mucParts[0];
1125			nick = mucParts[1];
1126		} else {
1127			muc = mucParts[0];
1128			nick = conversation.getAccount().getUsername();
1129		}
1130		PresencePacket packet = new PresencePacket();
1131		packet.setAttribute("to", muc + "/" + nick);
1132		Element x = new Element("x");
1133		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1134		if (conversation.getMessages().size() != 0) {
1135			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1136			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1137			x.addChild("history").setAttribute("seconds", diff + "");
1138		}
1139		packet.addChild(x);
1140		conversation.getAccount().getXmppConnection()
1141				.sendPresencePacket(packet);
1142	}
1143
1144	private OnRenameListener renameListener = null;
1145
1146	public void setOnRenameListener(OnRenameListener listener) {
1147		this.renameListener = listener;
1148	}
1149
1150	public void renameInMuc(final Conversation conversation, final String nick) {
1151		final MucOptions options = conversation.getMucOptions();
1152		if (options.online()) {
1153			options.setOnRenameListener(new OnRenameListener() {
1154
1155				@Override
1156				public void onRename(boolean success) {
1157					if (renameListener != null) {
1158						renameListener.onRename(success);
1159					}
1160					if (success) {
1161						databaseBackend.updateConversation(conversation);
1162					}
1163				}
1164			});
1165			options.flagAboutToRename();
1166			PresencePacket packet = new PresencePacket();
1167			packet.setAttribute("to",
1168					conversation.getContactJid().split("/")[0] + "/" + nick);
1169			packet.setAttribute("from", conversation.getAccount().getFullJid());
1170
1171			conversation.getAccount().getXmppConnection()
1172					.sendPresencePacket(packet, null);
1173		} else {
1174			String jid = conversation.getContactJid().split("/")[0] + "/"
1175					+ nick;
1176			conversation.setContactJid(jid);
1177			databaseBackend.updateConversation(conversation);
1178			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1179				joinMuc(conversation);
1180			}
1181		}
1182	}
1183
1184	public void leaveMuc(Conversation conversation) {
1185		PresencePacket packet = new PresencePacket();
1186		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1187		packet.setAttribute("from", conversation.getAccount().getFullJid());
1188		packet.setAttribute("type", "unavailable");
1189		Log.d(LOGTAG,"send leaving muc " + packet);
1190		conversation.getAccount().getXmppConnection()
1191				.sendPresencePacket(packet);
1192		conversation.getMucOptions().setOffline();
1193	}
1194
1195	public void disconnect(Account account, boolean force) {
1196		if ((account.getStatus() == Account.STATUS_ONLINE)
1197				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1198			if (!force) {
1199				List<Conversation> conversations = getConversations();
1200				for (int i = 0; i < conversations.size(); i++) {
1201					Conversation conversation = conversations.get(i);
1202					if (conversation.getAccount() == account) {
1203						if (conversation.getMode() == Conversation.MODE_MULTI) {
1204							leaveMuc(conversation);
1205						} else {
1206							conversation.endOtrIfNeeded();
1207						}
1208					}
1209				}
1210			}
1211			account.getXmppConnection().disconnect(force);
1212		}
1213	}
1214
1215	@Override
1216	public IBinder onBind(Intent intent) {
1217		return mBinder;
1218	}
1219
1220	public void updateContact(Contact contact) {
1221		databaseBackend.updateContact(contact,false);
1222		replaceContactInConversation(contact.getAccount(),contact.getJid(), contact);
1223	}
1224
1225	public void updateMessage(Message message) {
1226		databaseBackend.updateMessage(message);
1227	}
1228
1229	public void createContact(Contact contact) {
1230		SharedPreferences sharedPref = getPreferences();
1231		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1232		if (autoGrant) {
1233			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1234			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1235		}
1236		databaseBackend.createContact(contact);
1237		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1238		Element query = new Element("query");
1239		query.setAttribute("xmlns", "jabber:iq:roster");
1240		Element item = new Element("item");
1241		item.setAttribute("jid", contact.getJid());
1242		item.setAttribute("name", contact.getJid());
1243		query.addChild(item);
1244		iq.addChild(query);
1245		Account account = contact.getAccount();
1246		account.getXmppConnection().sendIqPacket(iq, null);
1247		if (autoGrant) {
1248			requestPresenceUpdatesFrom(contact);
1249			if (account.getXmppConnection().hasPendingSubscription(contact.getJid())) {
1250				Log.d("xmppService","contact had pending subscription");
1251				sendPresenceUpdatesTo(contact);
1252			}
1253		}
1254		replaceContactInConversation(contact.getAccount(),contact.getJid(), contact);
1255	}
1256
1257	public void requestPresenceUpdatesFrom(Contact contact) {
1258		// Requesting a Subscription type=subscribe
1259		PresencePacket packet = new PresencePacket();
1260		packet.setAttribute("type", "subscribe");
1261		packet.setAttribute("to", contact.getJid());
1262		packet.setAttribute("from", contact.getAccount().getJid());
1263		Log.d(LOGTAG, packet.toString());
1264		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1265	}
1266
1267	public void stopPresenceUpdatesFrom(Contact contact) {
1268		// Unsubscribing type='unsubscribe'
1269		PresencePacket packet = new PresencePacket();
1270		packet.setAttribute("type", "unsubscribe");
1271		packet.setAttribute("to", contact.getJid());
1272		packet.setAttribute("from", contact.getAccount().getJid());
1273		Log.d(LOGTAG, packet.toString());
1274		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1275	}
1276
1277	public void stopPresenceUpdatesTo(Contact contact) {
1278		// Canceling a Subscription type=unsubscribed
1279		PresencePacket packet = new PresencePacket();
1280		packet.setAttribute("type", "unsubscribed");
1281		packet.setAttribute("to", contact.getJid());
1282		packet.setAttribute("from", contact.getAccount().getJid());
1283		Log.d(LOGTAG, packet.toString());
1284		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1285	}
1286
1287	public void sendPresenceUpdatesTo(Contact contact) {
1288		// type='subscribed'
1289		PresencePacket packet = new PresencePacket();
1290		packet.setAttribute("type", "subscribed");
1291		packet.setAttribute("to", contact.getJid());
1292		packet.setAttribute("from", contact.getAccount().getJid());
1293		Log.d(LOGTAG, packet.toString());
1294		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1295	}
1296
1297	public void sendPgpPresence(Account account, String signature) {
1298		PresencePacket packet = new PresencePacket();
1299		packet.setAttribute("from", account.getFullJid());
1300		Element status = new Element("status");
1301		status.setContent("online");
1302		packet.addChild(status);
1303		Element x = new Element("x");
1304		x.setAttribute("xmlns", "jabber:x:signed");
1305		x.setContent(signature);
1306		packet.addChild(x);
1307		account.getXmppConnection().sendPresencePacket(packet);
1308	}
1309
1310	public void generatePgpAnnouncement(Account account)
1311			throws PgpEngine.UserInputRequiredException {
1312		if (account.getStatus() == Account.STATUS_ONLINE) {
1313			String signature = getPgpEngine().generateSignature("online");
1314			account.setKey("pgp_signature", signature);
1315			databaseBackend.updateAccount(account);
1316			sendPgpPresence(account, signature);
1317		}
1318	}
1319
1320	public void updateConversation(Conversation conversation) {
1321		this.databaseBackend.updateConversation(conversation);
1322	}
1323
1324	public Contact findContact(String uuid) {
1325		Contact contact = this.databaseBackend.getContact(uuid);
1326		if (contact!=null) {
1327			for (Account account : getAccounts()) {
1328				if (contact.getAccountUuid().equals(account.getUuid())) {
1329					contact.setAccount(account);
1330				}
1331			}
1332		}
1333		return contact;
1334	}
1335
1336	public void removeOnTLSExceptionReceivedListener() {
1337		this.tlsException = null;
1338	}
1339
1340	// TODO dont let thread sleep but schedule wake up
1341	public void reconnectAccount(final Account account, final boolean force) {
1342		new Thread(new Runnable() {
1343
1344			@Override
1345			public void run() {
1346				if (account.getXmppConnection() != null) {
1347					disconnect(account, force);
1348				}
1349				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1350					if (account.getXmppConnection() == null) {
1351						account.setXmppConnection(createConnection(account));
1352					}
1353					Thread thread = new Thread(account.getXmppConnection());
1354					thread.start();
1355					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1356				}
1357			}
1358		}).start();
1359	}
1360
1361	public void updateConversationInGui() {
1362		if (convChangedListener != null) {
1363			convChangedListener.onConversationListChanged();
1364		}
1365	}
1366
1367	public void sendConversationSubject(Conversation conversation,
1368			String subject) {
1369		MessagePacket packet = new MessagePacket();
1370		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1371		packet.setTo(conversation.getContactJid().split("/")[0]);
1372		Element subjectChild = new Element("subject");
1373		subjectChild.setContent(subject);
1374		packet.addChild(subjectChild);
1375		packet.setFrom(conversation.getAccount().getJid());
1376		Account account = conversation.getAccount();
1377		if (account.getStatus() == Account.STATUS_ONLINE) {
1378			account.getXmppConnection().sendMessagePacket(packet);
1379		}
1380	}
1381
1382	public void inviteToConference(Conversation conversation,
1383			List<Contact> contacts) {
1384		for (Contact contact : contacts) {
1385			MessagePacket packet = new MessagePacket();
1386			packet.setTo(conversation.getContactJid().split("/")[0]);
1387			packet.setFrom(conversation.getAccount().getFullJid());
1388			Element x = new Element("x");
1389			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1390			Element invite = new Element("invite");
1391			invite.setAttribute("to", contact.getJid());
1392			x.addChild(invite);
1393			packet.addChild(x);
1394			Log.d(LOGTAG, packet.toString());
1395			conversation.getAccount().getXmppConnection()
1396					.sendMessagePacket(packet);
1397		}
1398
1399	}
1400	
1401	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1402		boolean marked = false;
1403		for(Conversation conversation : getConversations()) {
1404			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1405				for(Message message : conversation.getMessages()) {
1406					if (message.getUuid().equals(uuid)) {
1407						markMessage(message, status);
1408						marked = true;
1409						break;
1410					}
1411				}
1412				break;
1413			}
1414		}
1415		return marked;
1416	}
1417	
1418	public void markMessage(Message message, int status) {
1419		message.setStatus(status);
1420		databaseBackend.updateMessage(message);
1421		if (convChangedListener!=null) {
1422			convChangedListener.onConversationListChanged();
1423		}
1424	}
1425	
1426	public SharedPreferences getPreferences() {
1427		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1428	}
1429}