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;
  19import eu.siacs.conversations.crypto.PgpEngine;
  20import eu.siacs.conversations.entities.Account;
  21import eu.siacs.conversations.entities.Contact;
  22import eu.siacs.conversations.entities.Conversation;
  23import eu.siacs.conversations.entities.Message;
  24import eu.siacs.conversations.entities.MucOptions;
  25import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  26import eu.siacs.conversations.entities.Presences;
  27import eu.siacs.conversations.parser.MessageParser;
  28import eu.siacs.conversations.persistance.DatabaseBackend;
  29import eu.siacs.conversations.persistance.FileBackend;
  30import eu.siacs.conversations.ui.OnAccountListChangedListener;
  31import eu.siacs.conversations.ui.OnConversationListChangedListener;
  32import eu.siacs.conversations.ui.UiCallback;
  33import eu.siacs.conversations.utils.ExceptionHelper;
  34import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  35import eu.siacs.conversations.utils.PhoneHelper;
  36import eu.siacs.conversations.utils.UIHelper;
  37import eu.siacs.conversations.xml.Element;
  38import eu.siacs.conversations.xmpp.OnBindListener;
  39import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  40import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  41import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  42import eu.siacs.conversations.xmpp.OnStatusChanged;
  43import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  44import eu.siacs.conversations.xmpp.XmppConnection;
  45import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  46import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  47import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  48import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  49import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  50import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  51import android.app.AlarmManager;
  52import android.app.PendingIntent;
  53import android.app.Service;
  54import android.content.Context;
  55import android.content.Intent;
  56import android.content.SharedPreferences;
  57import android.database.ContentObserver;
  58import android.net.ConnectivityManager;
  59import android.net.NetworkInfo;
  60import android.net.Uri;
  61import android.os.Binder;
  62import android.os.Bundle;
  63import android.os.IBinder;
  64import android.os.Looper;
  65import android.os.PowerManager;
  66import android.os.PowerManager.WakeLock;
  67import android.os.SystemClock;
  68import android.preference.PreferenceManager;
  69import android.provider.ContactsContract;
  70import android.util.Log;
  71
  72public class XmppConnectionService extends Service {
  73
  74	protected static final String LOGTAG = "xmppService";
  75	public DatabaseBackend databaseBackend;
  76	private FileBackend fileBackend;
  77
  78	public long startDate;
  79
  80	private static final int PING_MAX_INTERVAL = 300;
  81	private static final int PING_MIN_INTERVAL = 10;
  82	private static final int PING_TIMEOUT = 5;
  83	private static final int CONNECT_TIMEOUT = 60;
  84	private static final long CARBON_GRACE_PERIOD = 60000L;
  85	
  86	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  87
  88	private MessageParser mMessageParser = new MessageParser(this);
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
  93			this);
  94
  95	private OnConversationListChangedListener convChangedListener = null;
  96	private int convChangedListenerCount = 0;
  97	private OnAccountListChangedListener accountChangedListener = null;
  98	private OnTLSExceptionReceived tlsException = null;
  99
 100	public void setOnTLSExceptionReceivedListener(
 101			OnTLSExceptionReceived listener) {
 102		tlsException = listener;
 103	}
 104
 105	private Random mRandom = new Random(System.currentTimeMillis());
 106
 107	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 108
 109	private ContentObserver contactObserver = new ContentObserver(null) {
 110		@Override
 111		public void onChange(boolean selfChange) {
 112			super.onChange(selfChange);
 113			Intent intent = new Intent(getApplicationContext(), XmppConnectionService.class);
 114			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 115			startService(intent);
 116		}
 117	};
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if (getPreferences().getBoolean(
 128					"notification_grace_period_after_carbon_received", true)) {
 129				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 130			}
 131
 132			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 133				String pgpBody = mMessageParser.getPgpBody(packet);
 134				if (pgpBody != null) {
 135					message = mMessageParser.parsePgpChat(pgpBody, packet,
 136							account);
 137					message.markUnread();
 138				} else if ((packet.getBody() != null)
 139						&& (packet.getBody().startsWith("?OTR"))) {
 140					message = mMessageParser.parseOtrChat(packet, account);
 141					if (message != null) {
 142						message.markUnread();
 143					}
 144				} else if (packet.hasChild("body")) {
 145					message = mMessageParser
 146							.parsePlainTextChat(packet, account);
 147					message.markUnread();
 148				} else if (packet.hasChild("received")
 149						|| (packet.hasChild("sent"))) {
 150					message = mMessageParser
 151							.parseCarbonMessage(packet, account);
 152					if (message != null) {
 153						if (message.getStatus() == Message.STATUS_SEND) {
 154							lastCarbonMessageReceived = SystemClock
 155									.elapsedRealtime();
 156							notify = false;
 157							message.getConversation().markRead();
 158						} else {
 159							message.markUnread();
 160						}
 161					}
 162				}
 163
 164			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 165				message = mMessageParser.parseGroupchat(packet, account);
 166				if (message != null) {
 167					if (message.getStatus() == Message.STATUS_RECIEVED) {
 168						message.markUnread();
 169					} else {
 170						message.getConversation().markRead();
 171						notify = false;
 172					}
 173				}
 174			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 175				mMessageParser.parseError(packet, account);
 176				return;
 177			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 178				if (packet.hasChild("x")) {
 179					Element x = packet.findChild("x");
 180					if (x.hasChild("invite")) {
 181						findOrCreateConversation(account, packet.getFrom(),
 182								true);
 183						if (convChangedListener != null) {
 184							convChangedListener.onConversationListChanged();
 185						}
 186						Log.d(LOGTAG,
 187								"invitation received to " + packet.getFrom());
 188					}
 189
 190				} else {
 191					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 192				}
 193			}
 194			if ((message == null) || (message.getBody() == null)) {
 195				return;
 196			}
 197			if (packet.hasChild("delay")) {
 198				try {
 199					String stamp = packet.findChild("delay").getAttribute(
 200							"stamp");
 201					stamp = stamp.replace("Z", "+0000");
 202					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 203							.parse(stamp);
 204					message.setTime(date.getTime());
 205				} catch (ParseException e) {
 206					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 207				}
 208			}
 209			Conversation conversation = message.getConversation();
 210			conversation.getMessages().add(message);
 211			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 212				databaseBackend.createMessage(message);
 213			}
 214			if (convChangedListener != null) {
 215				convChangedListener.onConversationListChanged();
 216			} else {
 217				UIHelper.updateNotification(getApplicationContext(),
 218						getConversations(), message.getConversation(), notify);
 219			}
 220		}
 221	};
 222	private OnStatusChanged statusListener = new OnStatusChanged() {
 223
 224		@Override
 225		public void onStatusChanged(Account account) {
 226			if (accountChangedListener != null) {
 227				accountChangedListener.onAccountListChangedListener();
 228			}
 229			if (account.getStatus() == Account.STATUS_ONLINE) {
 230				List<Conversation> conversations = getConversations();
 231				for (int i = 0; i < conversations.size(); ++i) {
 232					if (conversations.get(i).getAccount() == account) {
 233						sendUnsendMessages(conversations.get(i));
 234					}
 235				}
 236				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 237			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 238				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 239					int timeToReconnect = mRandom.nextInt(50) + 10;
 240					scheduleWakeupCall(timeToReconnect, false);
 241				}
 242
 243			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 244				databaseBackend.updateAccount(account);
 245				reconnectAccount(account, true);
 246			} else if (account.getStatus() != Account.STATUS_CONNECTING) {
 247				int next = account.getXmppConnection().getTimeToNextAttempt();
 248				Log.d(LOGTAG, account.getJid()
 249						+ ": error connecting account. try again in " + next
 250						+ "s for the "
 251						+ (account.getXmppConnection().getAttempt() + 1)
 252						+ " time");
 253				scheduleWakeupCall(next, false);
 254			}
 255			UIHelper.showErrorNotification(getApplicationContext(),
 256					getAccounts());
 257		}
 258	};
 259
 260	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 261
 262		@Override
 263		public void onPresencePacketReceived(final Account account,
 264				PresencePacket packet) {
 265			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 266				Conversation muc = findMuc(
 267						packet.getAttribute("from").split("/")[0], account);
 268				if (muc != null) {
 269					muc.getMucOptions().processPacket(packet);
 270				} else {
 271					Log.d(LOGTAG, account.getJid()
 272							+ ": could not find muc for received muc package "
 273							+ packet.toString());
 274				}
 275			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 276				Conversation muc = findMuc(
 277						packet.getAttribute("from").split("/")[0], account);
 278				if (muc != null) {
 279					Log.d(LOGTAG,
 280							account.getJid() + ": reading muc status packet "
 281									+ packet.toString());
 282					int error = muc.getMucOptions().getError();
 283					muc.getMucOptions().processPacket(packet);
 284					if ((muc.getMucOptions().getError() != error)
 285							&& (convChangedListener != null)) {
 286						Log.d(LOGTAG, "muc error status changed");
 287						convChangedListener.onConversationListChanged();
 288					}
 289				}
 290			} else {
 291				String[] fromParts = packet.getAttribute("from").split("/");
 292				String type = packet.getAttribute("type");
 293				if (fromParts[0].equals(account.getJid())) {
 294					if (fromParts.length == 2) {
 295						if (type == null) {
 296							account.updatePresence(fromParts[1], Presences
 297									.parseShow(packet.findChild("show")));
 298						} else if (type.equals("unavailable")) {
 299							account.removePresence(fromParts[1]);
 300						}
 301					}
 302
 303				} else {
 304					Contact contact = account.getRoster().getContact(
 305							packet.getFrom());
 306					if (type == null) {
 307						if (fromParts.length == 2) {
 308							contact.updatePresence(fromParts[1], Presences
 309									.parseShow(packet.findChild("show")));
 310							PgpEngine pgp = getPgpEngine();
 311							if (pgp != null) {
 312								Element x = packet.findChild("x",
 313										"jabber:x:signed");
 314								if (x != null) {
 315									Element status = packet.findChild("status");
 316									String msg;
 317									if (status != null) {
 318										msg = status.getContent();
 319									} else {
 320										msg = "";
 321									}
 322									contact.setPgpKeyId(pgp.fetchKeyId(account,
 323											msg, x.getContent()));
 324								}
 325							}
 326						} else {
 327							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 328						}
 329					} else if (type.equals("unavailable")) {
 330						if (fromParts.length != 2) {
 331							contact.clearPresences();
 332						} else {
 333							contact.removePresence(fromParts[1]);
 334						}
 335					} else if (type.equals("subscribe")) {
 336						Log.d(LOGTAG, "received subscribe packet from "
 337								+ packet.getFrom());
 338						if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
 339							Log.d(LOGTAG, "preemptive grant; granting");
 340							sendPresenceUpdatesTo(contact);
 341							contact.setOption(Contact.Options.FROM);
 342							contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
 343							if ((contact.getOption(Contact.Options.ASKING))
 344									&& (!contact.getOption(Contact.Options.TO))) {
 345								requestPresenceUpdatesFrom(contact);
 346							}
 347						} else {
 348							contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
 349						}
 350					} else {
 351						// Log.d(LOGTAG, packet.toString());
 352					}
 353				}
 354			}
 355		}
 356	};
 357
 358	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 359
 360		@Override
 361		public void onIqPacketReceived(Account account, IqPacket packet) {
 362			if (packet.hasChild("query", "jabber:iq:roster")) {
 363				String from = packet.getFrom();
 364				if ((from == null) || (from.equals(account.getJid()))) {
 365					Element query = packet.findChild("query");
 366					processRosterItems(account, query);
 367				} else {
 368					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 369				}
 370			} else if (packet
 371					.hasChild("open", "http://jabber.org/protocol/ibb")
 372					|| packet
 373							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 374				XmppConnectionService.this.mJingleConnectionManager
 375						.deliverIbbPacket(account, packet);
 376			} else if (packet.hasChild("query",
 377					"http://jabber.org/protocol/disco#info")) {
 378				IqPacket iqResponse = packet
 379						.generateRespone(IqPacket.TYPE_RESULT);
 380				Element query = iqResponse.addChild("query",
 381						"http://jabber.org/protocol/disco#info");
 382				query.addChild("feature").setAttribute("var",
 383						"urn:xmpp:jingle:1");
 384				query.addChild("feature").setAttribute("var",
 385						"urn:xmpp:jingle:apps:file-transfer:3");
 386				query.addChild("feature").setAttribute("var",
 387						"urn:xmpp:jingle:transports:s5b:1");
 388				query.addChild("feature").setAttribute("var",
 389						"urn:xmpp:jingle:transports:ibb:1");
 390				account.getXmppConnection().sendIqPacket(iqResponse, null);
 391			} else {
 392				if ((packet.getType() == IqPacket.TYPE_GET)
 393						|| (packet.getType() == IqPacket.TYPE_SET)) {
 394					IqPacket response = packet
 395							.generateRespone(IqPacket.TYPE_ERROR);
 396					Element error = response.addChild("error");
 397					error.setAttribute("type", "cancel");
 398					error.addChild("feature-not-implemented",
 399							"urn:ietf:params:xml:ns:xmpp-stanzas");
 400					account.getXmppConnection().sendIqPacket(response, null);
 401				}
 402			}
 403		}
 404	};
 405
 406	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 407
 408		@Override
 409		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 410			mJingleConnectionManager.deliverPacket(account, packet);
 411		}
 412	};
 413
 414	private OpenPgpServiceConnection pgpServiceConnection;
 415	private PgpEngine mPgpEngine = null;
 416	private Intent pingIntent;
 417	private PendingIntent pendingPingIntent = null;
 418	private WakeLock wakeLock;
 419	private PowerManager pm;
 420
 421	public PgpEngine getPgpEngine() {
 422		if (pgpServiceConnection.isBound()) {
 423			if (this.mPgpEngine == null) {
 424				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 425						getApplicationContext(),
 426						pgpServiceConnection.getService()), this);
 427			}
 428			return mPgpEngine;
 429		} else {
 430			return null;
 431		}
 432
 433	}
 434
 435	public FileBackend getFileBackend() {
 436		return this.fileBackend;
 437	}
 438
 439	public Message attachImageToConversation(final Conversation conversation,
 440			final Uri uri, final UiCallback callback) {
 441		final Message message;
 442		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 443			message = new Message(conversation, "",
 444					Message.ENCRYPTION_DECRYPTED);
 445		} else {
 446			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 447		}
 448		message.setPresence(conversation.getNextPresence());
 449		message.setType(Message.TYPE_IMAGE);
 450		message.setStatus(Message.STATUS_OFFERED);
 451		new Thread(new Runnable() {
 452
 453			@Override
 454			public void run() {
 455				try {
 456					getFileBackend().copyImageToPrivateStorage(message, uri);
 457					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 458						getPgpEngine().encrypt(message, callback);
 459					} else {
 460						callback.success();
 461					}
 462				} catch (FileBackend.ImageCopyException e) {
 463					callback.error(e.getResId());
 464				}
 465			}
 466		}).start();
 467		return message;
 468	}
 469
 470	protected Conversation findMuc(String name, Account account) {
 471		for (Conversation conversation : this.conversations) {
 472			if (conversation.getContactJid().split("/")[0].equals(name)
 473					&& (conversation.getAccount() == account)) {
 474				return conversation;
 475			}
 476		}
 477		return null;
 478	}
 479
 480	private void processRosterItems(Account account, Element elements) {
 481		String version = elements.getAttribute("ver");
 482		if (version != null) {
 483			account.getRoster().setVersion(version);
 484		}
 485		for (Element item : elements.getChildren()) {
 486			if (item.getName().equals("item")) {
 487				String jid = item.getAttribute("jid");
 488				String name = item.getAttribute("name");
 489				String subscription = item.getAttribute("subscription");
 490				Contact contact = account.getRoster().getContact(jid);
 491				contact.setServerName(name);
 492				if (subscription.equals("remove")) {
 493					contact.resetOption(Contact.Options.IN_ROSTER);
 494				} else {
 495					contact.setOption(Contact.Options.IN_ROSTER);
 496					contact.parseSubscriptionFromElement(item);
 497				}
 498			}
 499		}
 500	}
 501
 502	public class XmppConnectionBinder extends Binder {
 503		public XmppConnectionService getService() {
 504			return XmppConnectionService.this;
 505		}
 506	}
 507
 508	@Override
 509	public int onStartCommand(Intent intent, int flags, int startId) {
 510		this.wakeLock.acquire();
 511		if ((intent!=null)&&(intent.getAction()!=null)&&(intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS))) {
 512			mergePhoneContactsWithRoster();
 513		}
 514		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 515				.getSystemService(Context.CONNECTIVITY_SERVICE);
 516		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 517		boolean isConnected = activeNetwork != null
 518				&& activeNetwork.isConnected();
 519
 520		for (Account account : accounts) {
 521			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 522				if (!isConnected) {
 523					account.setStatus(Account.STATUS_NO_INTERNET);
 524					if (statusListener != null) {
 525						statusListener.onStatusChanged(account);
 526					}
 527				} else {
 528					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 529						account.setStatus(Account.STATUS_OFFLINE);
 530						if (statusListener != null) {
 531							statusListener.onStatusChanged(account);
 532						}
 533					}
 534					if (account.getStatus() == Account.STATUS_ONLINE) {
 535						long lastReceived = account.getXmppConnection().lastPaketReceived;
 536						long lastSent = account.getXmppConnection().lastPingSent;
 537						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 538							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 539							this.reconnectAccount(account, true);
 540						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 541							account.getXmppConnection().sendPing();
 542							account.getXmppConnection().lastPingSent = SystemClock
 543									.elapsedRealtime();
 544							this.scheduleWakeupCall(2, false);
 545						}
 546					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 547						if (account.getXmppConnection() == null) {
 548							account.setXmppConnection(this
 549									.createConnection(account));
 550						}
 551						account.getXmppConnection().lastPingSent = SystemClock
 552								.elapsedRealtime();
 553						new Thread(account.getXmppConnection()).start();
 554					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 555							&& ((SystemClock.elapsedRealtime() - account
 556									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 557						Log.d(LOGTAG, account.getJid()
 558								+ ": time out during connect reconnecting");
 559						reconnectAccount(account, true);
 560					} else {
 561						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 562							reconnectAccount(account, true);
 563						}
 564					}
 565					// in any case. reschedule wakup call
 566					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 567				}
 568				if (accountChangedListener != null) {
 569					accountChangedListener.onAccountListChangedListener();
 570				}
 571			}
 572		}
 573		if (wakeLock.isHeld()) {
 574			wakeLock.release();
 575		}
 576		return START_STICKY;
 577	}
 578
 579	@Override
 580	public void onCreate() {
 581		ExceptionHelper.init(getApplicationContext());
 582		this.databaseBackend = DatabaseBackend
 583				.getInstance(getApplicationContext());
 584		this.fileBackend = new FileBackend(getApplicationContext());
 585		this.accounts = databaseBackend.getAccounts();
 586
 587		for (Account account : this.accounts) {
 588			this.databaseBackend.readRoster(account.getRoster());
 589		}
 590		this.mergePhoneContactsWithRoster();
 591		this.getConversations();
 592
 593		getContentResolver().registerContentObserver(
 594				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 595		this.pgpServiceConnection = new OpenPgpServiceConnection(
 596				getApplicationContext(), "org.sufficientlysecure.keychain");
 597		this.pgpServiceConnection.bindToService();
 598
 599		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 600		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 601				"XmppConnectionService");
 602	}
 603
 604	@Override
 605	public void onDestroy() {
 606		super.onDestroy();
 607		this.logoutAndSave();
 608	}
 609	
 610	@Override
 611	public void onTaskRemoved(Intent rootIntent) {
 612		super.onTaskRemoved(rootIntent);
 613		this.logoutAndSave();
 614	}
 615	
 616	private void logoutAndSave() {
 617		for (Account account : accounts) {
 618			databaseBackend.writeRoster(account.getRoster());
 619			if (account.getXmppConnection() != null) {
 620				disconnect(account, true);
 621			}
 622		}
 623		Log.d(LOGTAG,"good bye");
 624	}
 625
 626	protected void scheduleWakeupCall(int seconds, boolean ping) {
 627		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 628		Context context = getApplicationContext();
 629		AlarmManager alarmManager = (AlarmManager) context
 630				.getSystemService(Context.ALARM_SERVICE);
 631
 632		if (ping) {
 633			if (this.pingIntent == null) {
 634				this.pingIntent = new Intent(context, EventReceiver.class);
 635				this.pingIntent.setAction("ping");
 636				this.pingIntent.putExtra("time", timeToWake);
 637				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 638						this.pingIntent, 0);
 639				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 640						timeToWake, pendingPingIntent);
 641			} else {
 642				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 643				if (scheduledTime < SystemClock.elapsedRealtime()
 644						|| (scheduledTime > timeToWake)) {
 645					this.pingIntent.putExtra("time", timeToWake);
 646					alarmManager.cancel(this.pendingPingIntent);
 647					this.pendingPingIntent = PendingIntent.getBroadcast(
 648							context, 0, this.pingIntent, 0);
 649					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 650							timeToWake, pendingPingIntent);
 651				}
 652			}
 653		} else {
 654			Intent intent = new Intent(context, EventReceiver.class);
 655			intent.setAction("ping_check");
 656			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 657					intent, 0);
 658			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 659					alarmIntent);
 660		}
 661
 662	}
 663
 664	public XmppConnection createConnection(Account account) {
 665		SharedPreferences sharedPref = getPreferences();
 666		account.setResource(sharedPref.getString("resource", "mobile")
 667				.toLowerCase(Locale.getDefault()));
 668		XmppConnection connection = new XmppConnection(account, this.pm);
 669		connection.setOnMessagePacketReceivedListener(this.messageListener);
 670		connection.setOnStatusChangedListener(this.statusListener);
 671		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 672		connection
 673				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 674		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 675		connection
 676				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 677
 678					@Override
 679					public void onTLSExceptionReceived(String fingerprint,
 680							Account account) {
 681						Log.d(LOGTAG, "tls exception arrived in service");
 682						if (tlsException != null) {
 683							tlsException.onTLSExceptionReceived(fingerprint,
 684									account);
 685						}
 686					}
 687				});
 688		connection.setOnBindListener(new OnBindListener() {
 689
 690			@Override
 691			public void onBind(final Account account) {
 692				account.getRoster().clearPresences();
 693				account.clearPresences(); // self presences
 694				fetchRosterFromServer(account);
 695				sendPresence(account);
 696				connectMultiModeConversations(account);
 697				if (convChangedListener != null) {
 698					convChangedListener.onConversationListChanged();
 699				}
 700			}
 701		});
 702		return connection;
 703	}
 704
 705	synchronized public void sendMessage(Message message, String presence) {
 706		Account account = message.getConversation().getAccount();
 707		Conversation conv = message.getConversation();
 708		MessagePacket packet = null;
 709		boolean saveInDb = false;
 710		boolean addToConversation = false;
 711		boolean send = false;
 712		if (account.getStatus() == Account.STATUS_ONLINE) {
 713			if (message.getType() == Message.TYPE_IMAGE) {
 714				mJingleConnectionManager.createNewConnection(message);
 715			} else {
 716				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 717					if (!conv.hasValidOtrSession()) {
 718						// starting otr session. messages will be send later
 719						conv.startOtrSession(getApplicationContext(), presence,
 720								true);
 721					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 722						// otr session aleary exists, creating message packet
 723						// accordingly
 724						packet = prepareMessagePacket(account, message,
 725								conv.getOtrSession());
 726						send = true;
 727						message.setStatus(Message.STATUS_SEND);
 728					}
 729					saveInDb = true;
 730					addToConversation = true;
 731				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 732					message.getConversation().endOtrIfNeeded();
 733					packet = prepareMessagePacket(account, message, null);
 734					packet.setBody("This is an XEP-0027 encryted message");
 735					packet.addChild("x", "jabber:x:encrypted").setContent(
 736							message.getEncryptedBody());
 737					message.setStatus(Message.STATUS_SEND);
 738					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 739					saveInDb = true;
 740					addToConversation = true;
 741					send = true;
 742				} else {
 743					message.getConversation().endOtrIfNeeded();
 744					// don't encrypt
 745					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 746						message.setStatus(Message.STATUS_SEND);
 747					}
 748					packet = prepareMessagePacket(account, message, null);
 749					send = true;
 750					saveInDb = true;
 751					addToConversation = true;
 752				}
 753			}
 754		} else {
 755			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 756				String pgpBody = message.getEncryptedBody();
 757				String decryptedBody = message.getBody();
 758				message.setBody(pgpBody);
 759				databaseBackend.createMessage(message);
 760				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 761				message.setBody(decryptedBody);
 762				addToConversation = true;
 763			} else {
 764				saveInDb = true;
 765				addToConversation = true;
 766			}
 767
 768		}
 769		if (saveInDb) {
 770			databaseBackend.createMessage(message);
 771		}
 772		if (addToConversation) {
 773			conv.getMessages().add(message);
 774			if (convChangedListener != null) {
 775				convChangedListener.onConversationListChanged();
 776			}
 777		}
 778		if ((send) && (packet != null)) {
 779			account.getXmppConnection().sendMessagePacket(packet);
 780		}
 781
 782	}
 783
 784	private void sendUnsendMessages(Conversation conversation) {
 785		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 786			if (conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND) {
 787				resendMessage(conversation.getMessages().get(i));
 788			}
 789		}
 790	}
 791
 792	private void resendMessage(Message message) {
 793		Account account = message.getConversation().getAccount();
 794		MessagePacket packet = null;
 795		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 796			packet = prepareMessagePacket(account, message, null);
 797		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 798			packet = prepareMessagePacket(account, message, null);
 799			packet.setBody("This is an XEP-0027 encryted message");
 800			if (message.getEncryptedBody() == null) {
 801				markMessage(message, Message.STATUS_SEND_FAILED);
 802				return;
 803			}
 804			packet.addChild("x", "jabber:x:encrypted").setContent(
 805					message.getEncryptedBody());
 806		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 807			packet = prepareMessagePacket(account, message, null);
 808			packet.setBody("This is an XEP-0027 encryted message");
 809			packet.addChild("x", "jabber:x:encrypted").setContent(
 810					message.getBody());
 811		}
 812		if (packet != null) {
 813			account.getXmppConnection().sendMessagePacket(packet);
 814			markMessage(message, Message.STATUS_SEND);
 815		}
 816	}
 817
 818	public MessagePacket prepareMessagePacket(Account account, Message message,
 819			Session otrSession) {
 820		MessagePacket packet = new MessagePacket();
 821		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 822			packet.setType(MessagePacket.TYPE_CHAT);
 823			if (otrSession != null) {
 824				try {
 825					packet.setBody(otrSession.transformSending(message
 826							.getBody()));
 827				} catch (OtrException e) {
 828					Log.d(LOGTAG,
 829							account.getJid()
 830									+ ": could not encrypt message to "
 831									+ message.getCounterpart());
 832				}
 833				packet.addChild("private", "urn:xmpp:carbons:2");
 834				packet.addChild("no-copy", "urn:xmpp:hints");
 835				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 836						+ otrSession.getSessionID().getUserID());
 837				packet.setFrom(account.getFullJid());
 838			} else {
 839				packet.setBody(message.getBody());
 840				packet.setTo(message.getCounterpart());
 841				packet.setFrom(account.getJid());
 842			}
 843		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 844			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 845			packet.setBody(message.getBody());
 846			packet.setTo(message.getCounterpart().split("/")[0]);
 847			packet.setFrom(account.getJid());
 848		}
 849		packet.setId(message.getUuid());
 850		return packet;
 851	}
 852
 853	public void fetchRosterFromServer(Account account) {
 854		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 855		if (!"".equals(account.getRosterVersion())) {
 856			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 857					+ account.getRosterVersion());
 858		} else {
 859			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 860		}
 861		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 862				account.getRosterVersion());
 863		account.getXmppConnection().sendIqPacket(iqPacket,
 864				new OnIqPacketReceived() {
 865
 866					@Override
 867					public void onIqPacketReceived(final Account account,
 868							IqPacket packet) {
 869						Element roster = packet.findChild("query");
 870						if (roster != null) {
 871							account.getRoster().markAllAsNotInRoster();
 872							processRosterItems(account, roster);
 873						}
 874					}
 875				});
 876	}
 877
 878	private void mergePhoneContactsWithRoster() {
 879		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 880				new OnPhoneContactsLoadedListener() {
 881					@Override
 882					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 883						for (Bundle phoneContact : phoneContacts) {
 884							for (Account account : accounts) {
 885								String jid = phoneContact.getString("jid");
 886								Contact contact = account.getRoster()
 887										.getContact(jid);
 888								String systemAccount = phoneContact
 889										.getInt("phoneid")
 890										+ "#"
 891										+ phoneContact.getString("lookup");
 892								contact.setSystemAccount(systemAccount);
 893								contact.setPhotoUri(phoneContact
 894										.getString("photouri"));
 895								contact.setSystemName(phoneContact
 896										.getString("displayname"));
 897							}
 898						}
 899					}
 900				});
 901	}
 902
 903	public List<Conversation> getConversations() {
 904		if (this.conversations == null) {
 905			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 906			for (Account account : this.accounts) {
 907				accountLookupTable.put(account.getUuid(), account);
 908			}
 909			this.conversations = databaseBackend
 910					.getConversations(Conversation.STATUS_AVAILABLE);
 911			for (Conversation conv : this.conversations) {
 912				Account account = accountLookupTable.get(conv.getAccountUuid());
 913				conv.setAccount(account);
 914				conv.setMessages(databaseBackend.getMessages(conv, 50));
 915			}
 916		}
 917		Collections.sort(this.conversations, new Comparator<Conversation>() {
 918			@Override
 919			public int compare(Conversation lhs, Conversation rhs) {
 920				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 921						.getLatestMessage().getTimeSent());
 922			}
 923		});
 924		return this.conversations;
 925	}
 926
 927	public List<Account> getAccounts() {
 928		return this.accounts;
 929	}
 930
 931	public Conversation findOrCreateConversation(Account account, String jid,
 932			boolean muc) {
 933		for (Conversation conv : this.getConversations()) {
 934			if ((conv.getAccount().equals(account))
 935					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 936				return conv;
 937			}
 938		}
 939		Conversation conversation = databaseBackend.findConversation(account,
 940				jid);
 941		if (conversation != null) {
 942			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 943			conversation.setAccount(account);
 944			if (muc) {
 945				conversation.setMode(Conversation.MODE_MULTI);
 946			} else {
 947				conversation.setMode(Conversation.MODE_SINGLE);
 948			}
 949			conversation.setMessages(databaseBackend.getMessages(conversation,
 950					50));
 951			this.databaseBackend.updateConversation(conversation);
 952		} else {
 953			String conversationName;
 954			Contact contact = account.getRoster().getContact(jid);
 955			if (contact != null) {
 956				conversationName = contact.getDisplayName();
 957			} else {
 958				conversationName = jid.split("@")[0];
 959			}
 960			if (muc) {
 961				conversation = new Conversation(conversationName, account, jid,
 962						Conversation.MODE_MULTI);
 963			} else {
 964				conversation = new Conversation(conversationName, account, jid,
 965						Conversation.MODE_SINGLE);
 966			}
 967			this.databaseBackend.createConversation(conversation);
 968		}
 969		this.conversations.add(conversation);
 970		if ((account.getStatus() == Account.STATUS_ONLINE)
 971				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
 972			joinMuc(conversation);
 973		}
 974		if (this.convChangedListener != null) {
 975			this.convChangedListener.onConversationListChanged();
 976		}
 977		return conversation;
 978	}
 979
 980	public void archiveConversation(Conversation conversation) {
 981		if (conversation.getMode() == Conversation.MODE_MULTI) {
 982			leaveMuc(conversation);
 983		} else {
 984			conversation.endOtrIfNeeded();
 985		}
 986		this.databaseBackend.updateConversation(conversation);
 987		this.conversations.remove(conversation);
 988		if (this.convChangedListener != null) {
 989			this.convChangedListener.onConversationListChanged();
 990		}
 991	}
 992
 993	public void clearConversationHistory(Conversation conversation) {
 994		this.databaseBackend.deleteMessagesInConversation(conversation);
 995		this.fileBackend.removeFiles(conversation);
 996		conversation.getMessages().clear();
 997		if (this.convChangedListener != null) {
 998			this.convChangedListener.onConversationListChanged();
 999		}
1000	}
1001
1002	public int getConversationCount() {
1003		return this.databaseBackend.getConversationCount();
1004	}
1005
1006	public void createAccount(Account account) {
1007		databaseBackend.createAccount(account);
1008		this.accounts.add(account);
1009		this.reconnectAccount(account, false);
1010		if (accountChangedListener != null)
1011			accountChangedListener.onAccountListChangedListener();
1012	}
1013
1014	public void updateAccount(Account account) {
1015		this.statusListener.onStatusChanged(account);
1016		databaseBackend.updateAccount(account);
1017		reconnectAccount(account, false);
1018		if (accountChangedListener != null) {
1019			accountChangedListener.onAccountListChangedListener();
1020		}
1021		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1022	}
1023
1024	public void deleteAccount(Account account) {
1025		if (account.getXmppConnection() != null) {
1026			this.disconnect(account, true);
1027		}
1028		databaseBackend.deleteAccount(account);
1029		this.accounts.remove(account);
1030		if (accountChangedListener != null) {
1031			accountChangedListener.onAccountListChangedListener();
1032		}
1033		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1034	}
1035
1036	public void setOnConversationListChangedListener(
1037			OnConversationListChangedListener listener) {
1038		this.convChangedListener = listener;
1039		this.convChangedListenerCount++;
1040	}
1041
1042	public void removeOnConversationListChangedListener() {
1043		this.convChangedListenerCount--;
1044		if (this.convChangedListenerCount == 0) {
1045			this.convChangedListener = null;
1046		}
1047	}
1048
1049	public void setOnAccountListChangedListener(
1050			OnAccountListChangedListener listener) {
1051		this.accountChangedListener = listener;
1052	}
1053
1054	public void removeOnAccountListChangedListener() {
1055		this.accountChangedListener = null;
1056	}
1057
1058	public void connectMultiModeConversations(Account account) {
1059		List<Conversation> conversations = getConversations();
1060		for (int i = 0; i < conversations.size(); i++) {
1061			Conversation conversation = conversations.get(i);
1062			if ((conversation.getMode() == Conversation.MODE_MULTI)
1063					&& (conversation.getAccount() == account)) {
1064				joinMuc(conversation);
1065			}
1066		}
1067	}
1068
1069	public void joinMuc(Conversation conversation) {
1070		String[] mucParts = conversation.getContactJid().split("/");
1071		String muc;
1072		String nick;
1073		if (mucParts.length == 2) {
1074			muc = mucParts[0];
1075			nick = mucParts[1];
1076		} else {
1077			muc = mucParts[0];
1078			nick = conversation.getAccount().getUsername();
1079		}
1080		PresencePacket packet = new PresencePacket();
1081		packet.setAttribute("to", muc + "/" + nick);
1082		Element x = new Element("x");
1083		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1084		if (conversation.getMessages().size() != 0) {
1085			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1086			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1087			x.addChild("history").setAttribute("seconds", diff + "");
1088		}
1089		packet.addChild(x);
1090		conversation.getAccount().getXmppConnection()
1091				.sendPresencePacket(packet);
1092	}
1093
1094	private OnRenameListener renameListener = null;
1095
1096	public void setOnRenameListener(OnRenameListener listener) {
1097		this.renameListener = listener;
1098	}
1099
1100	public void renameInMuc(final Conversation conversation, final String nick) {
1101		final MucOptions options = conversation.getMucOptions();
1102		if (options.online()) {
1103			options.setOnRenameListener(new OnRenameListener() {
1104
1105				@Override
1106				public void onRename(boolean success) {
1107					if (renameListener != null) {
1108						renameListener.onRename(success);
1109					}
1110					if (success) {
1111						String jid = conversation.getContactJid().split("/")[0]
1112								+ "/" + nick;
1113						conversation.setContactJid(jid);
1114						databaseBackend.updateConversation(conversation);
1115					}
1116				}
1117			});
1118			options.flagAboutToRename();
1119			PresencePacket packet = new PresencePacket();
1120			packet.setAttribute("to",
1121					conversation.getContactJid().split("/")[0] + "/" + nick);
1122			packet.setAttribute("from", conversation.getAccount().getFullJid());
1123
1124			conversation.getAccount().getXmppConnection()
1125					.sendPresencePacket(packet, null);
1126		} else {
1127			String jid = conversation.getContactJid().split("/")[0] + "/"
1128					+ nick;
1129			conversation.setContactJid(jid);
1130			databaseBackend.updateConversation(conversation);
1131			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1132				joinMuc(conversation);
1133			}
1134		}
1135	}
1136
1137	public void leaveMuc(Conversation conversation) {
1138		PresencePacket packet = new PresencePacket();
1139		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1140				+ "/" + conversation.getMucOptions().getNick());
1141		packet.setAttribute("from", conversation.getAccount().getFullJid());
1142		packet.setAttribute("type", "unavailable");
1143		Log.d(LOGTAG, "send leaving muc " + packet);
1144		conversation.getAccount().getXmppConnection()
1145				.sendPresencePacket(packet);
1146		conversation.getMucOptions().setOffline();
1147	}
1148
1149	public void disconnect(Account account, boolean force) {
1150		if ((account.getStatus() == Account.STATUS_ONLINE)
1151				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1152			if (!force) {
1153				List<Conversation> conversations = getConversations();
1154				for (int i = 0; i < conversations.size(); i++) {
1155					Conversation conversation = conversations.get(i);
1156					if (conversation.getAccount() == account) {
1157						if (conversation.getMode() == Conversation.MODE_MULTI) {
1158							leaveMuc(conversation);
1159						} else {
1160							conversation.endOtrIfNeeded();
1161						}
1162					}
1163				}
1164			}
1165			account.getXmppConnection().disconnect(force);
1166		}
1167	}
1168
1169	@Override
1170	public IBinder onBind(Intent intent) {
1171		return mBinder;
1172	}
1173
1174	public void updateMessage(Message message) {
1175		databaseBackend.updateMessage(message);
1176	}
1177
1178	public void createContact(Contact contact) {
1179		SharedPreferences sharedPref = getPreferences();
1180		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1181		if (autoGrant) {
1182			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1183			contact.setOption(Contact.Options.ASKING);
1184		}
1185		pushContactToServer(contact);
1186		if (autoGrant) {
1187			requestPresenceUpdatesFrom(contact);
1188			if (contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1189				Log.d("xmppService", "contact had pending subscription");
1190				sendPresenceUpdatesTo(contact);
1191			}
1192		}
1193	}
1194	
1195	public void pushContactToServer(Contact contact) {
1196		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1197		iq.query("jabber:iq:roster").addChild(contact.asElement());
1198		Account account = contact.getAccount();
1199		account.getXmppConnection().sendIqPacket(iq, null);
1200	}
1201	
1202	public void deleteContactOnServer(Contact contact) {
1203		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1204		Element item = iq.query("jabber:iq:roster").addChild("item");
1205		item.setAttribute("jid", contact.getJid());
1206		item.setAttribute("subscription", "remove");
1207		Account account = contact.getAccount();
1208		account.getXmppConnection().sendIqPacket(iq, null);
1209	}
1210
1211	public void requestPresenceUpdatesFrom(Contact contact) {
1212		PresencePacket packet = new PresencePacket();
1213		packet.setAttribute("type", "subscribe");
1214		packet.setAttribute("to", contact.getJid());
1215		packet.setAttribute("from", contact.getAccount().getJid());
1216		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1217	}
1218
1219	public void stopPresenceUpdatesFrom(Contact contact) {
1220		PresencePacket packet = new PresencePacket();
1221		packet.setAttribute("type", "unsubscribe");
1222		packet.setAttribute("to", contact.getJid());
1223		packet.setAttribute("from", contact.getAccount().getJid());
1224		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1225	}
1226
1227	public void stopPresenceUpdatesTo(Contact contact) {
1228		PresencePacket packet = new PresencePacket();
1229		packet.setAttribute("type", "unsubscribed");
1230		packet.setAttribute("to", contact.getJid());
1231		packet.setAttribute("from", contact.getAccount().getJid());
1232		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1233	}
1234
1235	public void sendPresenceUpdatesTo(Contact contact) {
1236		PresencePacket packet = new PresencePacket();
1237		packet.setAttribute("type", "subscribed");
1238		packet.setAttribute("to", contact.getJid());
1239		packet.setAttribute("from", contact.getAccount().getJid());
1240		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1241		contact.resetOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
1242	}
1243
1244	public void sendPresence(Account account) {
1245		PresencePacket packet = new PresencePacket();
1246		packet.setAttribute("from", account.getFullJid());
1247		String sig = account.getPgpSignature();
1248		if (sig != null) {
1249			packet.addChild("status").setContent("online");
1250			packet.addChild("x", "jabber:x:signed").setContent(sig);
1251		}
1252		account.getXmppConnection().sendPresencePacket(packet);
1253	}
1254
1255	public void updateConversation(Conversation conversation) {
1256		this.databaseBackend.updateConversation(conversation);
1257	}
1258
1259	public void removeOnTLSExceptionReceivedListener() {
1260		this.tlsException = null;
1261	}
1262
1263	public void reconnectAccount(final Account account, final boolean force) {
1264		new Thread(new Runnable() {
1265
1266			@Override
1267			public void run() {
1268				if (account.getXmppConnection() != null) {
1269					disconnect(account, force);
1270				}
1271				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1272					if (account.getXmppConnection() == null) {
1273						account.setXmppConnection(createConnection(account));
1274					}
1275					Thread thread = new Thread(account.getXmppConnection());
1276					thread.start();
1277					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1278				}
1279			}
1280		}).start();
1281	}
1282
1283	public void sendConversationSubject(Conversation conversation,
1284			String subject) {
1285		MessagePacket packet = new MessagePacket();
1286		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1287		packet.setTo(conversation.getContactJid().split("/")[0]);
1288		Element subjectChild = new Element("subject");
1289		subjectChild.setContent(subject);
1290		packet.addChild(subjectChild);
1291		packet.setFrom(conversation.getAccount().getJid());
1292		Account account = conversation.getAccount();
1293		if (account.getStatus() == Account.STATUS_ONLINE) {
1294			account.getXmppConnection().sendMessagePacket(packet);
1295		}
1296	}
1297
1298	public void inviteToConference(Conversation conversation,
1299			List<Contact> contacts) {
1300		for (Contact contact : contacts) {
1301			MessagePacket packet = new MessagePacket();
1302			packet.setTo(conversation.getContactJid().split("/")[0]);
1303			packet.setFrom(conversation.getAccount().getFullJid());
1304			Element x = new Element("x");
1305			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1306			Element invite = new Element("invite");
1307			invite.setAttribute("to", contact.getJid());
1308			x.addChild(invite);
1309			packet.addChild(x);
1310			Log.d(LOGTAG, packet.toString());
1311			conversation.getAccount().getXmppConnection()
1312					.sendMessagePacket(packet);
1313		}
1314
1315	}
1316
1317	public boolean markMessage(Account account, String recipient, String uuid,
1318			int status) {
1319		for (Conversation conversation : getConversations()) {
1320			if (conversation.getContactJid().equals(recipient)
1321					&& conversation.getAccount().equals(account)) {
1322				return markMessage(conversation, uuid, status);
1323			}
1324		}
1325		return false;
1326	}
1327
1328	public boolean markMessage(Conversation conversation, String uuid,
1329			int status) {
1330		for (Message message : conversation.getMessages()) {
1331			if (message.getUuid().equals(uuid)) {
1332				markMessage(message, status);
1333				return true;
1334			}
1335		}
1336		return false;
1337	}
1338
1339	public void markMessage(Message message, int status) {
1340		message.setStatus(status);
1341		databaseBackend.updateMessage(message);
1342		if (convChangedListener != null) {
1343			convChangedListener.onConversationListChanged();
1344		}
1345	}
1346
1347	public SharedPreferences getPreferences() {
1348		return PreferenceManager
1349				.getDefaultSharedPreferences(getApplicationContext());
1350	}
1351
1352	public void updateUi(Conversation conversation, boolean notify) {
1353		if (convChangedListener != null) {
1354			convChangedListener.onConversationListChanged();
1355		} else {
1356			UIHelper.updateNotification(getApplicationContext(),
1357					getConversations(), conversation, notify);
1358		}
1359	}
1360	
1361	public Account findAccountByJid(String accountJid) {
1362		for (Account account : this.accounts) {
1363			if (account.getJid().equals(accountJid)) {
1364				return account;
1365			}
1366		}
1367		return null;
1368	}
1369}