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				databaseBackend.createMessage(message);
 428				if (convChangedListener!=null) {
 429					convChangedListener.onConversationListChanged();
 430				}
 431				sendMessage(message, null);
 432			}
 433		}).start();
 434	}
 435	
 436	
 437	protected Conversation findMuc(String name, Account account) {
 438		for (Conversation conversation : this.conversations) {
 439			if (conversation.getContactJid().split("/")[0].equals(name)
 440					&& (conversation.getAccount() == account)) {
 441				return conversation;
 442			}
 443		}
 444		return null;
 445	}
 446
 447	private void processRosterItems(Account account, Element elements) {
 448		String version = elements.getAttribute("ver");
 449		if (version != null) {
 450			account.setRosterVersion(version);
 451			databaseBackend.updateAccount(account);
 452		}
 453		for (Element item : elements.getChildren()) {
 454			if (item.getName().equals("item")) {
 455				String jid = item.getAttribute("jid");
 456				String subscription = item.getAttribute("subscription");
 457				Contact contact = databaseBackend.findContact(account, jid);
 458				if (contact == null) {
 459					if (!subscription.equals("remove")) {
 460						String name = item.getAttribute("name");
 461						if (name == null) {
 462							name = jid.split("@")[0];
 463						}
 464						contact = new Contact(account, name, jid, null);
 465						contact.parseSubscriptionFromElement(item);
 466						databaseBackend.createContact(contact);
 467					}
 468				} else {
 469					if (subscription.equals("remove")) {
 470						databaseBackend.deleteContact(contact);
 471						replaceContactInConversation(account,contact.getJid(), null);
 472					} else {
 473						contact.parseSubscriptionFromElement(item);
 474						databaseBackend.updateContact(contact,false);
 475						replaceContactInConversation(account,contact.getJid(), contact);
 476					}
 477				}
 478			}
 479		}
 480	}
 481
 482	private void replaceContactInConversation(Account account, String jid, Contact contact) {
 483		List<Conversation> conversations = getConversations();
 484		for (Conversation c : conversations) {
 485			if (c.getContactJid().equals(jid)&&(c.getAccount()==account)) {
 486				c.setContact(contact);
 487				break;
 488			}
 489		}
 490	}
 491
 492	public class XmppConnectionBinder extends Binder {
 493		public XmppConnectionService getService() {
 494			return XmppConnectionService.this;
 495		}
 496	}
 497
 498	@Override
 499	public int onStartCommand(Intent intent, int flags, int startId) {
 500		this.wakeLock.acquire();
 501		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 502		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 503				.getSystemService(Context.CONNECTIVITY_SERVICE);
 504		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 505		boolean isConnected = activeNetwork != null
 506				&& activeNetwork.isConnected();
 507
 508		for (Account account : accounts) {
 509			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 510				if (!isConnected) {
 511					account.setStatus(Account.STATUS_NO_INTERNET);
 512					if (statusListener != null) {
 513						statusListener.onStatusChanged(account);
 514					}
 515				} else {
 516					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 517						account.setStatus(Account.STATUS_OFFLINE);
 518						if (statusListener != null) {
 519							statusListener.onStatusChanged(account);
 520						}
 521					}
 522
 523					// TODO 3 remaining cases
 524					if (account.getStatus() == Account.STATUS_ONLINE) {
 525						long lastReceived = account.getXmppConnection().lastPaketReceived;
 526						long lastSent = account.getXmppConnection().lastPingSent;
 527						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 528							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 529							this.reconnectAccount(account, true);
 530						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 531							account.getXmppConnection().sendPing();
 532							account.getXmppConnection().lastPingSent = SystemClock
 533									.elapsedRealtime();
 534							this.scheduleWakeupCall(2, false);
 535						}
 536					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 537						if (account.getXmppConnection() == null) {
 538							account.setXmppConnection(this
 539									.createConnection(account));
 540						}
 541						account.getXmppConnection().lastPingSent = SystemClock
 542								.elapsedRealtime();
 543						new Thread(account.getXmppConnection()).start();
 544					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 545							&& ((SystemClock.elapsedRealtime() - account
 546									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 547						Log.d(LOGTAG, account.getJid()
 548								+ ": time out during connect reconnecting");
 549						reconnectAccount(account, true);
 550					} else {
 551						Log.d(LOGTAG,
 552								"seconds since last connect:"
 553										+ ((SystemClock.elapsedRealtime() - account
 554												.getXmppConnection().lastConnect) / 1000));
 555						Log.d(LOGTAG,
 556								account.getJid() + ": status="
 557										+ account.getStatus());
 558						// TODO notify user of ssl cert problem or auth problem
 559						// or what ever
 560					}
 561					// in any case. reschedule wakup call
 562					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 563				}
 564				if (accountChangedListener != null) {
 565					accountChangedListener.onAccountListChangedListener();
 566				}
 567			}
 568		}
 569		if (wakeLock.isHeld()) {
 570			wakeLock.release();
 571		}
 572		return START_STICKY;
 573	}
 574
 575	@Override
 576	public void onCreate() {
 577		ExceptionHelper.init(getApplicationContext());
 578		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 579		this.fileBackend = new FileBackend(getApplicationContext());
 580		this.accounts = databaseBackend.getAccounts();
 581
 582		this.getConversations();
 583		
 584		getContentResolver().registerContentObserver(
 585				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 586		this.pgpServiceConnection = new OpenPgpServiceConnection(
 587				getApplicationContext(), "org.sufficientlysecure.keychain");
 588		this.pgpServiceConnection.bindToService();
 589
 590		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 591		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 592				"XmppConnectionService");
 593	}
 594
 595	@Override
 596	public void onDestroy() {
 597		super.onDestroy();
 598		for (Account account : accounts) {
 599			if (account.getXmppConnection() != null) {
 600				disconnect(account, true);
 601			}
 602		}
 603	}
 604
 605	protected void scheduleWakeupCall(int seconds, boolean ping) {
 606		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 607		Context context = getApplicationContext();
 608		AlarmManager alarmManager = (AlarmManager) context
 609				.getSystemService(Context.ALARM_SERVICE);
 610
 611		if (ping) {
 612			if (this.pingIntent == null) {
 613				this.pingIntent = new Intent(context, EventReceiver.class);
 614				this.pingIntent.setAction("ping");
 615				this.pingIntent.putExtra("time", timeToWake);
 616				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 617						this.pingIntent, 0);
 618				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 619						timeToWake, pendingPingIntent);
 620				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 621			} else {
 622				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 623				if (scheduledTime < SystemClock.elapsedRealtime()
 624						|| (scheduledTime > timeToWake)) {
 625					this.pingIntent.putExtra("time", timeToWake);
 626					alarmManager.cancel(this.pendingPingIntent);
 627					this.pendingPingIntent = PendingIntent.getBroadcast(
 628							context, 0, this.pingIntent, 0);
 629					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 630							timeToWake, pendingPingIntent);
 631					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 632				}
 633			}
 634		} else {
 635			Intent intent = new Intent(context, EventReceiver.class);
 636			intent.setAction("ping_check");
 637			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 638					intent, 0);
 639			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 640					alarmIntent);
 641		}
 642
 643	}
 644
 645	public XmppConnection createConnection(Account account) {
 646		SharedPreferences sharedPref = getPreferences();
 647		account.setResource(sharedPref.getString("resource", "mobile").toLowerCase(Locale.getDefault()));
 648		XmppConnection connection = new XmppConnection(account, this.pm);
 649		connection.setOnMessagePacketReceivedListener(this.messageListener);
 650		connection.setOnStatusChangedListener(this.statusListener);
 651		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 652		connection
 653				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 654		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 655		connection
 656				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 657
 658					@Override
 659					public void onTLSExceptionReceived(String fingerprint,
 660							Account account) {
 661						Log.d(LOGTAG, "tls exception arrived in service");
 662						if (tlsException != null) {
 663							tlsException.onTLSExceptionReceived(fingerprint,
 664									account);
 665						}
 666					}
 667				});
 668		connection.setOnBindListener(new OnBindListener() {
 669
 670			@Override
 671			public void onBind(Account account) {
 672				databaseBackend.clearPresences(account);
 673				account.clearPresences(); // self presences
 674				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 675					updateRoster(account, null);
 676				}
 677				connectMultiModeConversations(account);
 678				if (convChangedListener != null) {
 679					convChangedListener.onConversationListChanged();
 680				}
 681			}
 682		});
 683		return connection;
 684	}
 685
 686	synchronized public void sendMessage(Message message, String presence) {
 687		Account account = message.getConversation().getAccount();
 688		Conversation conv = message.getConversation();
 689		MessagePacket packet = null;
 690		boolean saveInDb = false;
 691		boolean addToConversation = false;
 692		boolean send = false;
 693		if (account.getStatus() == Account.STATUS_ONLINE) {
 694			if (message.getType() == Message.TYPE_IMAGE) {
 695				mJingleConnectionManager.createNewConnection(message);
 696			} else {
 697				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 698					if (!conv.hasValidOtrSession()) {
 699						// starting otr session. messages will be send later
 700						conv.startOtrSession(getApplicationContext(), presence,true);
 701					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 702						// otr session aleary exists, creating message packet
 703						// accordingly
 704						packet = prepareMessagePacket(account, message,
 705								conv.getOtrSession());
 706						send = true;
 707						message.setStatus(Message.STATUS_SEND);
 708					}
 709					saveInDb = true;
 710					addToConversation = true;
 711				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 712					message.getConversation().endOtrIfNeeded();
 713					long keyId = message.getConversation().getContact()
 714							.getPgpKeyId();
 715					packet = new MessagePacket();
 716					packet.setType(MessagePacket.TYPE_CHAT);
 717					packet.setFrom(message.getConversation().getAccount()
 718							.getFullJid());
 719					packet.setTo(message.getCounterpart());
 720					packet.setBody("This is an XEP-0027 encryted message");
 721					packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 722					message.setStatus(Message.STATUS_SEND);
 723					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 724					saveInDb = true;
 725					addToConversation = true;
 726					send = true;
 727				} else {
 728					message.getConversation().endOtrIfNeeded();
 729					// don't encrypt
 730					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 731						message.setStatus(Message.STATUS_SEND);
 732						saveInDb = true;
 733						addToConversation = true;
 734					}
 735					packet = prepareMessagePacket(account, message, null);
 736					send = true;
 737				}
 738			}
 739		} else {
 740			// account is offline
 741			saveInDb = true;
 742			addToConversation = true;
 743
 744		}
 745		if (saveInDb) {
 746			databaseBackend.createMessage(message);
 747		}
 748		if (addToConversation) {
 749			conv.getMessages().add(message);
 750			if (convChangedListener != null) {
 751				convChangedListener.onConversationListChanged();
 752			}
 753		}
 754		if ((send)&&(packet!=null)) {
 755			account.getXmppConnection().sendMessagePacket(packet);
 756		}
 757
 758	}
 759
 760	private void sendUnsendMessages(Conversation conversation) {
 761		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 762			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)&&(conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 763				Message message = conversation.getMessages().get(i);
 764				MessagePacket packet = prepareMessagePacket(
 765						conversation.getAccount(), message, null);
 766				conversation.getAccount().getXmppConnection()
 767						.sendMessagePacket(packet);
 768				message.setStatus(Message.STATUS_SEND);
 769				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 770					databaseBackend.updateMessage(message);
 771				} else {
 772					databaseBackend.deleteMessage(message);
 773					conversation.getMessages().remove(i);
 774					i--;
 775				}
 776			}
 777		}
 778	}
 779
 780	public MessagePacket prepareMessagePacket(Account account, Message message,
 781			Session otrSession) {
 782		MessagePacket packet = new MessagePacket();
 783		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 784			packet.setType(MessagePacket.TYPE_CHAT);
 785			if (otrSession != null) {
 786				try {
 787					packet.setBody(otrSession.transformSending(message
 788							.getBody()));
 789				} catch (OtrException e) {
 790					Log.d(LOGTAG,
 791							account.getJid()
 792									+ ": could not encrypt message to "
 793									+ message.getCounterpart());
 794				}
 795				packet.addChild("private","urn:xmpp:carbons:2");
 796				packet.addChild("no-copy","urn:xmpp:hints");
 797				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 798						+ otrSession.getSessionID().getUserID());
 799				packet.setFrom(account.getFullJid());
 800			} else {
 801				packet.setBody(message.getBody());
 802				packet.setTo(message.getCounterpart());
 803				packet.setFrom(account.getJid());
 804			}
 805		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 806			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 807			packet.setBody(message.getBody());
 808			packet.setTo(message.getCounterpart().split("/")[0]);
 809			packet.setFrom(account.getJid());
 810		}
 811		packet.setId(message.getUuid());
 812		return packet;
 813	}
 814
 815	private void getRoster(Account account,
 816			final OnRosterFetchedListener listener) {
 817		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 818		for (int i = 0; i < contacts.size(); ++i) {
 819			contacts.get(i).setAccount(account);
 820		}
 821		if (listener != null) {
 822			listener.onRosterFetched(contacts);
 823		}
 824	}
 825
 826	public List<Contact> getRoster(Account account) {
 827		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 828		for (int i = 0; i < contacts.size(); ++i) {
 829			contacts.get(i).setAccount(account);
 830		}
 831		return contacts;
 832	}
 833
 834	public void updateRoster(final Account account,
 835			final OnRosterFetchedListener listener) {
 836		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 837		if (!"".equals(account.getRosterVersion())) {
 838			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 839					+ account.getRosterVersion());
 840		} else {
 841			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 842		}
 843		iqPacket.query("jabber:iq:roster").setAttribute("ver", account.getRosterVersion());
 844		account.getXmppConnection().sendIqPacket(iqPacket,
 845				new OnIqPacketReceived() {
 846
 847					@Override
 848					public void onIqPacketReceived(final Account account,
 849							IqPacket packet) {
 850						Element roster = packet.findChild("query");
 851						if (roster != null) {
 852							Log.d(LOGTAG, account.getJid()
 853									+ ": processing roster");
 854							processRosterItems(account, roster);
 855							StringBuilder mWhere = new StringBuilder();
 856							mWhere.append("jid NOT IN(");
 857							List<Element> items = roster.getChildren();
 858							for (int i = 0; i < items.size(); ++i) {
 859								mWhere.append(DatabaseUtils
 860										.sqlEscapeString(items.get(i)
 861												.getAttribute("jid")));
 862								if (i != items.size() - 1) {
 863									mWhere.append(",");
 864								}
 865							}
 866							mWhere.append(") and accountUuid = \"");
 867							mWhere.append(account.getUuid());
 868							mWhere.append("\"");
 869							List<Contact> contactsToDelete = databaseBackend
 870									.getContacts(mWhere.toString());
 871							for (Contact contact : contactsToDelete) {
 872								databaseBackend.deleteContact(contact);
 873								replaceContactInConversation(account,contact.getJid(),
 874										null);
 875							}
 876
 877						} else {
 878							Log.d(LOGTAG, account.getJid()
 879									+ ": empty roster returend");
 880						}
 881						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 882
 883							@Override
 884							public void phoneContactsMerged() {
 885								if (listener != null) {
 886									getRoster(account, listener);
 887								}
 888							}
 889						});
 890					}
 891				});
 892	}
 893
 894	public void mergePhoneContactsWithRoster(
 895			final OnPhoneContactsMerged listener) {
 896		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 897				new OnPhoneContactsLoadedListener() {
 898					@Override
 899					public void onPhoneContactsLoaded(
 900							Hashtable<String, Bundle> phoneContacts) {
 901						List<Contact> contacts = databaseBackend
 902								.getContactsByAccount(null);
 903						for (int i = 0; i < contacts.size(); ++i) {
 904							Contact contact = contacts.get(i);
 905							if (phoneContacts.containsKey(contact.getJid())) {
 906								Bundle phoneContact = phoneContacts.get(contact
 907										.getJid());
 908								String systemAccount = phoneContact
 909										.getInt("phoneid")
 910										+ "#"
 911										+ phoneContact.getString("lookup");
 912								contact.setSystemAccount(systemAccount);
 913								contact.setPhotoUri(phoneContact
 914										.getString("photouri"));
 915								contact.setDisplayName(phoneContact
 916										.getString("displayname"));
 917								databaseBackend.updateContact(contact,false);
 918								replaceContactInConversation(contact.getAccount(),contact.getJid(),
 919										contact);
 920							} else {
 921								if ((contact.getSystemAccount() != null)
 922										|| (contact.getProfilePhoto() != null)) {
 923									contact.setSystemAccount(null);
 924									contact.setPhotoUri(null);
 925									databaseBackend.updateContact(contact,false);
 926									replaceContactInConversation(contact.getAccount(),
 927											contact.getJid(), contact);
 928								}
 929							}
 930						}
 931						if (listener != null) {
 932							listener.phoneContactsMerged();
 933						}
 934					}
 935				});
 936	}
 937
 938	public List<Conversation> getConversations() {
 939		if (this.conversations == null) {
 940			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 941			for (Account account : this.accounts) {
 942				accountLookupTable.put(account.getUuid(), account);
 943			}
 944			this.conversations = databaseBackend
 945					.getConversations(Conversation.STATUS_AVAILABLE);
 946			for (Conversation conv : this.conversations) {
 947				Account account = accountLookupTable.get(conv.getAccountUuid());
 948				conv.setAccount(account);
 949				conv.setContact(findContact(account, conv.getContactJid()));
 950				conv.setMessages(databaseBackend.getMessages(conv, 50));
 951			}
 952		}
 953		Collections.sort(this.conversations, new Comparator<Conversation>() {
 954			@Override
 955			public int compare(Conversation lhs, Conversation rhs) {
 956				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 957						.getLatestMessage().getTimeSent());
 958			}
 959		});
 960		return this.conversations;
 961	}
 962
 963	public List<Account> getAccounts() {
 964		return this.accounts;
 965	}
 966
 967	public Contact findContact(Account account, String jid) {
 968		Contact contact = databaseBackend.findContact(account, jid);
 969		if (contact != null) {
 970			contact.setAccount(account);
 971		}
 972		return contact;
 973	}
 974
 975	public Conversation findOrCreateConversation(Account account, String jid,
 976			boolean muc) {
 977		for (Conversation conv : this.getConversations()) {
 978			if ((conv.getAccount().equals(account))
 979					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 980				return conv;
 981			}
 982		}
 983		Conversation conversation = databaseBackend.findConversation(account,
 984				jid);
 985		if (conversation != null) {
 986			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 987			conversation.setAccount(account);
 988			if (muc) {
 989				conversation.setMode(Conversation.MODE_MULTI);
 990			} else {
 991				conversation.setMode(Conversation.MODE_SINGLE);
 992			}
 993			conversation.setMessages(databaseBackend.getMessages(conversation,
 994					50));
 995			this.databaseBackend.updateConversation(conversation);
 996			conversation.setContact(findContact(account,
 997					conversation.getContactJid()));
 998		} else {
 999			String conversationName;
1000			Contact contact = findContact(account, jid);
1001			if (contact != null) {
1002				conversationName = contact.getDisplayName();
1003			} else {
1004				conversationName = jid.split("@")[0];
1005			}
1006			if (muc) {
1007				conversation = new Conversation(conversationName, account, jid,
1008						Conversation.MODE_MULTI);
1009			} else {
1010				conversation = new Conversation(conversationName, account, jid,
1011						Conversation.MODE_SINGLE);
1012			}
1013			conversation.setContact(contact);
1014			this.databaseBackend.createConversation(conversation);
1015		}
1016		this.conversations.add(conversation);
1017		if ((account.getStatus() == Account.STATUS_ONLINE)&&(conversation.getMode() == Conversation.MODE_MULTI)) {
1018			joinMuc(conversation);
1019		}
1020		if (this.convChangedListener != null) {
1021			this.convChangedListener.onConversationListChanged();
1022		}
1023		return conversation;
1024	}
1025
1026	public void archiveConversation(Conversation conversation) {
1027		if (conversation.getMode() == Conversation.MODE_MULTI) {
1028			leaveMuc(conversation);
1029		} else {
1030			conversation.endOtrIfNeeded();
1031		}
1032		this.databaseBackend.updateConversation(conversation);
1033		this.conversations.remove(conversation);
1034		if (this.convChangedListener != null) {
1035			this.convChangedListener.onConversationListChanged();
1036		}
1037	}
1038	
1039	public void clearConversationHistory(Conversation conversation) {
1040		this.databaseBackend.deleteMessagesInConversation(conversation);
1041		this.fileBackend.removeFiles(conversation);
1042		conversation.getMessages().clear();
1043		if (this.convChangedListener != null) {
1044			this.convChangedListener.onConversationListChanged();
1045		}
1046	}
1047
1048	public int getConversationCount() {
1049		return this.databaseBackend.getConversationCount();
1050	}
1051
1052	public void createAccount(Account account) {
1053		databaseBackend.createAccount(account);
1054		this.accounts.add(account);
1055		this.reconnectAccount(account, false);
1056		if (accountChangedListener != null)
1057			accountChangedListener.onAccountListChangedListener();
1058	}
1059
1060	public void deleteContact(Contact contact) {
1061		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1062		Element query = iq.query("jabber:iq:roster");
1063		query.addChild("item").setAttribute("jid", contact.getJid()).setAttribute("subscription", "remove");
1064		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1065		replaceContactInConversation(contact.getAccount(),contact.getJid(), null);
1066		databaseBackend.deleteContact(contact);
1067	}
1068
1069	public void updateAccount(Account account) {
1070		this.statusListener.onStatusChanged(account);
1071		databaseBackend.updateAccount(account);
1072		reconnectAccount(account, false);
1073		if (accountChangedListener != null)
1074			accountChangedListener.onAccountListChangedListener();
1075	}
1076
1077	public void deleteAccount(Account account) {
1078		if (account.getXmppConnection() != null) {
1079			this.disconnect(account, true);
1080		}
1081		databaseBackend.deleteAccount(account);
1082		this.accounts.remove(account);
1083		if (accountChangedListener != null)
1084			accountChangedListener.onAccountListChangedListener();
1085	}
1086
1087	public void setOnConversationListChangedListener(
1088			OnConversationListChangedListener listener) {
1089		this.convChangedListener = listener;
1090		this.convChangedListenerCount++;
1091	}
1092
1093	public void removeOnConversationListChangedListener() {
1094		this.convChangedListenerCount--;
1095		if (this.convChangedListenerCount==0) {
1096			this.convChangedListener = null;
1097		}
1098	}
1099
1100	public void setOnAccountListChangedListener(
1101			OnAccountListChangedListener listener) {
1102		this.accountChangedListener = listener;
1103	}
1104
1105	public void removeOnAccountListChangedListener() {
1106		this.accountChangedListener = null;
1107	}
1108
1109	public void connectMultiModeConversations(Account account) {
1110		List<Conversation> conversations = getConversations();
1111		for (int i = 0; i < conversations.size(); i++) {
1112			Conversation conversation = conversations.get(i);
1113			if ((conversation.getMode() == Conversation.MODE_MULTI)
1114					&& (conversation.getAccount() == account)) {
1115				joinMuc(conversation);
1116			}
1117		}
1118	}
1119
1120	public void joinMuc(Conversation conversation) {
1121		String[] mucParts = conversation.getContactJid().split("/");
1122		String muc;
1123		String nick;
1124		if (mucParts.length == 2) {
1125			muc = mucParts[0];
1126			nick = mucParts[1];
1127		} else {
1128			muc = mucParts[0];
1129			nick = conversation.getAccount().getUsername();
1130		}
1131		PresencePacket packet = new PresencePacket();
1132		packet.setAttribute("to", muc + "/" + nick);
1133		Element x = new Element("x");
1134		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1135		if (conversation.getMessages().size() != 0) {
1136			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1137			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1138			x.addChild("history").setAttribute("seconds", diff + "");
1139		}
1140		packet.addChild(x);
1141		conversation.getAccount().getXmppConnection()
1142				.sendPresencePacket(packet);
1143	}
1144
1145	private OnRenameListener renameListener = null;
1146
1147	public void setOnRenameListener(OnRenameListener listener) {
1148		this.renameListener = listener;
1149	}
1150
1151	public void renameInMuc(final Conversation conversation, final String nick) {
1152		final MucOptions options = conversation.getMucOptions();
1153		if (options.online()) {
1154			options.setOnRenameListener(new OnRenameListener() {
1155
1156				@Override
1157				public void onRename(boolean success) {
1158					if (renameListener != null) {
1159						renameListener.onRename(success);
1160					}
1161					if (success) {
1162						databaseBackend.updateConversation(conversation);
1163					}
1164				}
1165			});
1166			options.flagAboutToRename();
1167			PresencePacket packet = new PresencePacket();
1168			packet.setAttribute("to",
1169					conversation.getContactJid().split("/")[0] + "/" + nick);
1170			packet.setAttribute("from", conversation.getAccount().getFullJid());
1171
1172			conversation.getAccount().getXmppConnection()
1173					.sendPresencePacket(packet, null);
1174		} else {
1175			String jid = conversation.getContactJid().split("/")[0] + "/"
1176					+ nick;
1177			conversation.setContactJid(jid);
1178			databaseBackend.updateConversation(conversation);
1179			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1180				joinMuc(conversation);
1181			}
1182		}
1183	}
1184
1185	public void leaveMuc(Conversation conversation) {
1186		PresencePacket packet = new PresencePacket();
1187		packet.setAttribute("to", conversation.getContactJid().split("/")[0] + "/" + conversation.getMucOptions().getNick());
1188		packet.setAttribute("from", conversation.getAccount().getFullJid());
1189		packet.setAttribute("type", "unavailable");
1190		Log.d(LOGTAG,"send leaving muc " + packet);
1191		conversation.getAccount().getXmppConnection()
1192				.sendPresencePacket(packet);
1193		conversation.getMucOptions().setOffline();
1194	}
1195
1196	public void disconnect(Account account, boolean force) {
1197		if ((account.getStatus() == Account.STATUS_ONLINE)
1198				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1199			if (!force) {
1200				List<Conversation> conversations = getConversations();
1201				for (int i = 0; i < conversations.size(); i++) {
1202					Conversation conversation = conversations.get(i);
1203					if (conversation.getAccount() == account) {
1204						if (conversation.getMode() == Conversation.MODE_MULTI) {
1205							leaveMuc(conversation);
1206						} else {
1207							conversation.endOtrIfNeeded();
1208						}
1209					}
1210				}
1211			}
1212			account.getXmppConnection().disconnect(force);
1213		}
1214	}
1215
1216	@Override
1217	public IBinder onBind(Intent intent) {
1218		return mBinder;
1219	}
1220
1221	public void updateContact(Contact contact) {
1222		databaseBackend.updateContact(contact,false);
1223		replaceContactInConversation(contact.getAccount(),contact.getJid(), contact);
1224	}
1225
1226	public void updateMessage(Message message) {
1227		databaseBackend.updateMessage(message);
1228	}
1229
1230	public void createContact(Contact contact) {
1231		SharedPreferences sharedPref = getPreferences();
1232		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1233		if (autoGrant) {
1234			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1235			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1236		}
1237		databaseBackend.createContact(contact);
1238		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1239		Element query = new Element("query");
1240		query.setAttribute("xmlns", "jabber:iq:roster");
1241		Element item = new Element("item");
1242		item.setAttribute("jid", contact.getJid());
1243		item.setAttribute("name", contact.getJid());
1244		query.addChild(item);
1245		iq.addChild(query);
1246		Account account = contact.getAccount();
1247		account.getXmppConnection().sendIqPacket(iq, null);
1248		if (autoGrant) {
1249			requestPresenceUpdatesFrom(contact);
1250			if (account.getXmppConnection().hasPendingSubscription(contact.getJid())) {
1251				Log.d("xmppService","contact had pending subscription");
1252				sendPresenceUpdatesTo(contact);
1253			}
1254		}
1255		replaceContactInConversation(contact.getAccount(),contact.getJid(), contact);
1256	}
1257
1258	public void requestPresenceUpdatesFrom(Contact contact) {
1259		// Requesting a Subscription type=subscribe
1260		PresencePacket packet = new PresencePacket();
1261		packet.setAttribute("type", "subscribe");
1262		packet.setAttribute("to", contact.getJid());
1263		packet.setAttribute("from", contact.getAccount().getJid());
1264		Log.d(LOGTAG, packet.toString());
1265		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1266	}
1267
1268	public void stopPresenceUpdatesFrom(Contact contact) {
1269		// Unsubscribing type='unsubscribe'
1270		PresencePacket packet = new PresencePacket();
1271		packet.setAttribute("type", "unsubscribe");
1272		packet.setAttribute("to", contact.getJid());
1273		packet.setAttribute("from", contact.getAccount().getJid());
1274		Log.d(LOGTAG, packet.toString());
1275		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1276	}
1277
1278	public void stopPresenceUpdatesTo(Contact contact) {
1279		// Canceling a Subscription type=unsubscribed
1280		PresencePacket packet = new PresencePacket();
1281		packet.setAttribute("type", "unsubscribed");
1282		packet.setAttribute("to", contact.getJid());
1283		packet.setAttribute("from", contact.getAccount().getJid());
1284		Log.d(LOGTAG, packet.toString());
1285		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1286	}
1287
1288	public void sendPresenceUpdatesTo(Contact contact) {
1289		// type='subscribed'
1290		PresencePacket packet = new PresencePacket();
1291		packet.setAttribute("type", "subscribed");
1292		packet.setAttribute("to", contact.getJid());
1293		packet.setAttribute("from", contact.getAccount().getJid());
1294		Log.d(LOGTAG, packet.toString());
1295		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1296	}
1297
1298	public void sendPgpPresence(Account account, String signature) {
1299		PresencePacket packet = new PresencePacket();
1300		packet.setAttribute("from", account.getFullJid());
1301		Element status = new Element("status");
1302		status.setContent("online");
1303		packet.addChild(status);
1304		Element x = new Element("x");
1305		x.setAttribute("xmlns", "jabber:x:signed");
1306		x.setContent(signature);
1307		packet.addChild(x);
1308		account.getXmppConnection().sendPresencePacket(packet);
1309	}
1310
1311	public void generatePgpAnnouncement(Account account)
1312			throws PgpEngine.UserInputRequiredException {
1313		if (account.getStatus() == Account.STATUS_ONLINE) {
1314			String signature = getPgpEngine().generateSignature("online");
1315			account.setKey("pgp_signature", signature);
1316			databaseBackend.updateAccount(account);
1317			sendPgpPresence(account, signature);
1318		}
1319	}
1320
1321	public void updateConversation(Conversation conversation) {
1322		this.databaseBackend.updateConversation(conversation);
1323	}
1324
1325	public Contact findContact(String uuid) {
1326		Contact contact = this.databaseBackend.getContact(uuid);
1327		if (contact!=null) {
1328			for (Account account : getAccounts()) {
1329				if (contact.getAccountUuid().equals(account.getUuid())) {
1330					contact.setAccount(account);
1331				}
1332			}
1333		}
1334		return contact;
1335	}
1336
1337	public void removeOnTLSExceptionReceivedListener() {
1338		this.tlsException = null;
1339	}
1340
1341	// TODO dont let thread sleep but schedule wake up
1342	public void reconnectAccount(final Account account, final boolean force) {
1343		new Thread(new Runnable() {
1344
1345			@Override
1346			public void run() {
1347				if (account.getXmppConnection() != null) {
1348					disconnect(account, force);
1349				}
1350				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1351					if (account.getXmppConnection() == null) {
1352						account.setXmppConnection(createConnection(account));
1353					}
1354					Thread thread = new Thread(account.getXmppConnection());
1355					thread.start();
1356					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1357				}
1358			}
1359		}).start();
1360	}
1361
1362	public void updateConversationInGui() {
1363		if (convChangedListener != null) {
1364			convChangedListener.onConversationListChanged();
1365		}
1366	}
1367
1368	public void sendConversationSubject(Conversation conversation,
1369			String subject) {
1370		MessagePacket packet = new MessagePacket();
1371		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1372		packet.setTo(conversation.getContactJid().split("/")[0]);
1373		Element subjectChild = new Element("subject");
1374		subjectChild.setContent(subject);
1375		packet.addChild(subjectChild);
1376		packet.setFrom(conversation.getAccount().getJid());
1377		Account account = conversation.getAccount();
1378		if (account.getStatus() == Account.STATUS_ONLINE) {
1379			account.getXmppConnection().sendMessagePacket(packet);
1380		}
1381	}
1382
1383	public void inviteToConference(Conversation conversation,
1384			List<Contact> contacts) {
1385		for (Contact contact : contacts) {
1386			MessagePacket packet = new MessagePacket();
1387			packet.setTo(conversation.getContactJid().split("/")[0]);
1388			packet.setFrom(conversation.getAccount().getFullJid());
1389			Element x = new Element("x");
1390			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1391			Element invite = new Element("invite");
1392			invite.setAttribute("to", contact.getJid());
1393			x.addChild(invite);
1394			packet.addChild(x);
1395			Log.d(LOGTAG, packet.toString());
1396			conversation.getAccount().getXmppConnection()
1397					.sendMessagePacket(packet);
1398		}
1399
1400	}
1401	
1402	public boolean markMessage(Account account, String recipient, String uuid, int status) {
1403		boolean marked = false;
1404		for(Conversation conversation : getConversations()) {
1405			if (conversation.getContactJid().equals(recipient)&&conversation.getAccount().equals(account)) {
1406				for(Message message : conversation.getMessages()) {
1407					if (message.getUuid().equals(uuid)) {
1408						markMessage(message, status);
1409						marked = true;
1410						break;
1411					}
1412				}
1413				break;
1414			}
1415		}
1416		return marked;
1417	}
1418	
1419	public void markMessage(Message message, int status) {
1420		message.setStatus(status);
1421		databaseBackend.updateMessage(message);
1422		if (convChangedListener!=null) {
1423			convChangedListener.onConversationListChanged();
1424		}
1425	}
1426	
1427	public SharedPreferences getPreferences() {
1428		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
1429	}
1430}