XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.math.BigInteger;
  36import java.security.SecureRandom;
  37import java.util.ArrayList;
  38import java.util.Collection;
  39import java.util.Collections;
  40import java.util.Comparator;
  41import java.util.Hashtable;
  42import java.util.List;
  43import java.util.Locale;
  44import java.util.Map;
  45import java.util.concurrent.CopyOnWriteArrayList;
  46
  47import de.duenndns.ssl.MemorizingTrustManager;
  48import eu.siacs.conversations.Config;
  49import eu.siacs.conversations.R;
  50import eu.siacs.conversations.crypto.PgpEngine;
  51import eu.siacs.conversations.entities.Account;
  52import eu.siacs.conversations.entities.Blockable;
  53import eu.siacs.conversations.entities.Bookmark;
  54import eu.siacs.conversations.entities.Contact;
  55import eu.siacs.conversations.entities.Conversation;
  56import eu.siacs.conversations.entities.Downloadable;
  57import eu.siacs.conversations.entities.DownloadablePlaceholder;
  58import eu.siacs.conversations.entities.Message;
  59import eu.siacs.conversations.entities.MucOptions;
  60import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  61import eu.siacs.conversations.entities.Presences;
  62import eu.siacs.conversations.generator.IqGenerator;
  63import eu.siacs.conversations.generator.MessageGenerator;
  64import eu.siacs.conversations.generator.PresenceGenerator;
  65import eu.siacs.conversations.http.HttpConnectionManager;
  66import eu.siacs.conversations.parser.IqParser;
  67import eu.siacs.conversations.parser.MessageParser;
  68import eu.siacs.conversations.parser.PresenceParser;
  69import eu.siacs.conversations.persistance.DatabaseBackend;
  70import eu.siacs.conversations.persistance.FileBackend;
  71import eu.siacs.conversations.ui.UiCallback;
  72import eu.siacs.conversations.utils.CryptoHelper;
  73import eu.siacs.conversations.utils.ExceptionHelper;
  74import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  75import eu.siacs.conversations.utils.PRNGFixes;
  76import eu.siacs.conversations.utils.PhoneHelper;
  77import eu.siacs.conversations.utils.Xmlns;
  78import eu.siacs.conversations.xml.Element;
  79import eu.siacs.conversations.xmpp.OnBindListener;
  80import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  81import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  82import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  83import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  84import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  85import eu.siacs.conversations.xmpp.OnStatusChanged;
  86import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  87import eu.siacs.conversations.xmpp.PacketReceived;
  88import eu.siacs.conversations.xmpp.XmppConnection;
  89import eu.siacs.conversations.xmpp.forms.Data;
  90import eu.siacs.conversations.xmpp.forms.Field;
  91import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  92import eu.siacs.conversations.xmpp.jid.Jid;
  93import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  94import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  95import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  96import eu.siacs.conversations.xmpp.pep.Avatar;
  97import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  98import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  99import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 100
 101public class XmppConnectionService extends Service implements OnPhoneContactsLoadedListener {
 102
 103	public static final String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 104	private static final String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 105	public static final String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 106
 107	private ContentObserver contactObserver = new ContentObserver(null) {
 108		@Override
 109		public void onChange(boolean selfChange) {
 110			super.onChange(selfChange);
 111			Intent intent = new Intent(getApplicationContext(),
 112					XmppConnectionService.class);
 113			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 114			startService(intent);
 115		}
 116	};
 117	private final IBinder mBinder = new XmppConnectionBinder();
 118	public DatabaseBackend databaseBackend;
 119	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 120
 121		@Override
 122		public void onContactStatusChanged(Contact contact, boolean online) {
 123			Conversation conversation = find(getConversations(), contact);
 124			if (conversation != null) {
 125				if (online && contact.getPresences().size() > 1) {
 126					conversation.endOtrIfNeeded();
 127				} else {
 128					conversation.resetOtrSession();
 129				}
 130				if (online && (contact.getPresences().size() == 1)) {
 131					sendUnsentMessages(conversation);
 132				}
 133			}
 134		}
 135	};
 136	private FileBackend fileBackend = new FileBackend(this);
 137	private MemorizingTrustManager mMemorizingTrustManager;
 138	private NotificationService mNotificationService = new NotificationService(
 139			this);
 140	private OnMessagePacketReceived mMessageParser = new MessageParser(this);
 141	private OnPresencePacketReceived mPresenceParser = new PresenceParser(this);
 142	private IqParser mIqParser = new IqParser(this);
 143	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 144	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 145	private List<Account> accounts;
 146	private final List<Conversation> conversations = new CopyOnWriteArrayList<>();
 147	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 148			this);
 149	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 150			this);
 151	private AvatarService mAvatarService = new AvatarService(this);
 152	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 153	private OnConversationUpdate mOnConversationUpdate = null;
 154	private Integer convChangedListenerCount = 0;
 155	private OnAccountUpdate mOnAccountUpdate = null;
 156	private OnStatusChanged statusListener = new OnStatusChanged() {
 157
 158		@Override
 159		public void onStatusChanged(Account account) {
 160			XmppConnection connection = account.getXmppConnection();
 161			if (mOnAccountUpdate != null) {
 162				mOnAccountUpdate.onAccountUpdate();
 163			}
 164			if (account.getStatus() == Account.State.ONLINE) {
 165				for (Conversation conversation : account.pendingConferenceLeaves) {
 166					leaveMuc(conversation);
 167				}
 168				for (Conversation conversation : account.pendingConferenceJoins) {
 169					joinMuc(conversation);
 170				}
 171				mMessageArchiveService.executePendingQueries(account);
 172				mJingleConnectionManager.cancelInTransmission();
 173				List<Conversation> conversations = getConversations();
 174				for (Conversation conversation : conversations) {
 175					if (conversation.getAccount() == account) {
 176						conversation.startOtrIfNeeded();
 177						sendUnsentMessages(conversation);
 178					}
 179				}
 180				if (connection != null && connection.getFeatures().csi()) {
 181					if (checkListeners()) {
 182						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 183								+ " sending csi//inactive");
 184						connection.sendInactive();
 185					} else {
 186						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 187								+ " sending csi//active");
 188						connection.sendActive();
 189					}
 190				}
 191				syncDirtyContacts(account);
 192				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 193			} else if (account.getStatus() == Account.State.OFFLINE) {
 194				resetSendingToWaiting(account);
 195				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 196					int timeToReconnect = mRandom.nextInt(50) + 10;
 197					scheduleWakeupCall(timeToReconnect, false);
 198				}
 199			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 200				databaseBackend.updateAccount(account);
 201				reconnectAccount(account, true);
 202			} else if ((account.getStatus() != Account.State.CONNECTING)
 203					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 204				if (connection != null) {
 205					int next = connection.getTimeToNextAttempt();
 206					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 207							+ ": error connecting account. try again in "
 208							+ next + "s for the "
 209							+ (connection.getAttempt() + 1) + " time");
 210					scheduleWakeupCall((int) (next * 1.2), false);
 211				}
 212					}
 213			getNotificationService().updateErrorNotification();
 214		}
 215	};
 216
 217	private int accountChangedListenerCount = 0;
 218	private OnRosterUpdate mOnRosterUpdate = null;
 219	private OnUpdateBlocklist mOnUpdateBlocklist = null;
 220	private int updateBlocklistListenerCount = 0;
 221	private int rosterChangedListenerCount = 0;
 222	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 223	private int mucRosterChangedListenerCount = 0;
 224	private SecureRandom mRandom;
 225	private FileObserver fileObserver = new FileObserver(
 226			FileBackend.getConversationsImageDirectory()) {
 227
 228		@Override
 229		public void onEvent(int event, String path) {
 230			if (event == FileObserver.DELETE) {
 231				markFileDeleted(path.split("\\.")[0]);
 232			}
 233		}
 234	};
 235	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 236
 237		@Override
 238		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 239			mJingleConnectionManager.deliverPacket(account, packet);
 240		}
 241	};
 242
 243	private OpenPgpServiceConnection pgpServiceConnection;
 244	private PgpEngine mPgpEngine = null;
 245	private Intent pingIntent;
 246	private PendingIntent pendingPingIntent = null;
 247	private WakeLock wakeLock;
 248	private PowerManager pm;
 249	private OnBindListener mOnBindListener = new OnBindListener() {
 250
 251		@Override
 252		public void onBind(final Account account) {
 253			account.getRoster().clearPresences();
 254			account.pendingConferenceJoins.clear();
 255			account.pendingConferenceLeaves.clear();
 256			fetchRosterFromServer(account);
 257			fetchBookmarks(account);
 258			sendPresencePacket(account,mPresenceGenerator.sendPresence(account));
 259			connectMultiModeConversations(account);
 260			updateConversationUi();
 261		}
 262	};
 263
 264	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 265
 266		@Override
 267		public void onMessageAcknowledged(Account account, String uuid) {
 268			for (final Conversation conversation : getConversations()) {
 269				if (conversation.getAccount() == account) {
 270					Message message = conversation.findUnsentMessageWithUuid(uuid);
 271					if (message != null) {
 272						markMessage(message, Message.STATUS_SEND);
 273						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 274							databaseBackend.updateConversation(conversation);
 275						}
 276					}
 277				}
 278			}
 279		}
 280	};
 281	private LruCache<String, Bitmap> mBitmapCache;
 282	private IqGenerator mIqGenerator = new IqGenerator(this);
 283	private Thread mPhoneContactMergerThread;
 284
 285	public PgpEngine getPgpEngine() {
 286		if (pgpServiceConnection.isBound()) {
 287			if (this.mPgpEngine == null) {
 288				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 289							getApplicationContext(),
 290							pgpServiceConnection.getService()), this);
 291			}
 292			return mPgpEngine;
 293		} else {
 294			return null;
 295		}
 296
 297	}
 298
 299	public FileBackend getFileBackend() {
 300		return this.fileBackend;
 301	}
 302
 303	public AvatarService getAvatarService() {
 304		return this.mAvatarService;
 305	}
 306
 307	public void attachFileToConversation(Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
 308		final Message message;
 309		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 310			message = new Message(conversation, "",
 311					Message.ENCRYPTION_DECRYPTED);
 312		} else {
 313			message = new Message(conversation, "",
 314					conversation.getNextEncryption(forceEncryption()));
 315		}
 316		message.setCounterpart(conversation.getNextCounterpart());
 317		message.setType(Message.TYPE_FILE);
 318		message.setStatus(Message.STATUS_OFFERED);
 319		String path = getFileBackend().getOriginalPath(uri);
 320		if (path!=null) {
 321			message.setRelativeFilePath(path);
 322			getFileBackend().updateFileParams(message);
 323			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 324				getPgpEngine().encrypt(message, callback);
 325			} else {
 326				callback.success(message);
 327			}
 328		} else {
 329			new Thread(new Runnable() {
 330				@Override
 331				public void run() {
 332					try {
 333						getFileBackend().copyFileToPrivateStorage(message, uri);
 334						getFileBackend().updateFileParams(message);
 335						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 336							getPgpEngine().encrypt(message, callback);
 337						} else {
 338							callback.success(message);
 339						}
 340					} catch (FileBackend.FileCopyException e) {
 341						callback.error(e.getResId(),message);
 342					}
 343				}
 344			}).start();
 345
 346		}
 347	}
 348
 349	public void attachImageToConversation(final Conversation conversation,
 350			final Uri uri, final UiCallback<Message> callback) {
 351		final Message message;
 352		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 353			message = new Message(conversation, "",
 354					Message.ENCRYPTION_DECRYPTED);
 355		} else {
 356			message = new Message(conversation, "",
 357					conversation.getNextEncryption(forceEncryption()));
 358		}
 359		message.setCounterpart(conversation.getNextCounterpart());
 360		message.setType(Message.TYPE_IMAGE);
 361		message.setStatus(Message.STATUS_OFFERED);
 362		new Thread(new Runnable() {
 363
 364			@Override
 365			public void run() {
 366				try {
 367					getFileBackend().copyImageToPrivateStorage(message, uri);
 368					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 369						getPgpEngine().encrypt(message, callback);
 370					} else {
 371						callback.success(message);
 372					}
 373				} catch (final FileBackend.FileCopyException e) {
 374					callback.error(e.getResId(), message);
 375				}
 376			}
 377		}).start();
 378	}
 379
 380	public Conversation find(Bookmark bookmark) {
 381		return find(bookmark.getAccount(), bookmark.getJid());
 382	}
 383
 384	public Conversation find(final Account account, final Jid jid) {
 385		return find(getConversations(), account, jid);
 386	}
 387
 388	@Override
 389	public int onStartCommand(Intent intent, int flags, int startId) {
 390		if (intent != null && intent.getAction() != null) {
 391			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 392				PhoneHelper.loadPhoneContacts(getApplicationContext(), new ArrayList<Bundle>(), this);
 393				return START_STICKY;
 394			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 395				logoutAndSave();
 396				return START_NOT_STICKY;
 397			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 398				mNotificationService.clear();
 399			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 400				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 401				toggleForegroundService();
 402			}
 403		}
 404		this.wakeLock.acquire();
 405
 406		for (Account account : accounts) {
 407			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 408				if (!hasInternetConnection()) {
 409					account.setStatus(Account.State.NO_INTERNET);
 410					if (statusListener != null) {
 411						statusListener.onStatusChanged(account);
 412					}
 413				} else {
 414					if (account.getStatus() == Account.State.NO_INTERNET) {
 415						account.setStatus(Account.State.OFFLINE);
 416						if (statusListener != null) {
 417							statusListener.onStatusChanged(account);
 418						}
 419					}
 420					if (account.getStatus() == Account.State.ONLINE) {
 421						long lastReceived = account.getXmppConnection()
 422							.getLastPacketReceived();
 423						long lastSent = account.getXmppConnection()
 424							.getLastPingSent();
 425						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 426							Log.d(Config.LOGTAG, account.getJid()
 427									+ ": ping timeout");
 428							this.reconnectAccount(account, true);
 429						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 430							account.getXmppConnection().sendPing();
 431							this.scheduleWakeupCall(2, false);
 432						}
 433					} else if (account.getStatus() == Account.State.OFFLINE) {
 434						if (account.getXmppConnection() == null) {
 435							account.setXmppConnection(this
 436									.createConnection(account));
 437						}
 438						new Thread(account.getXmppConnection()).start();
 439					} else if ((account.getStatus() == Account.State.CONNECTING)
 440							&& ((SystemClock.elapsedRealtime() - account
 441									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 442						Log.d(Config.LOGTAG, account.getJid()
 443								+ ": time out during connect reconnecting");
 444						reconnectAccount(account, true);
 445					} else {
 446						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 447							reconnectAccount(account, true);
 448						}
 449					}
 450					// in any case. reschedule wakup call
 451					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 452				}
 453				if (mOnAccountUpdate != null) {
 454					mOnAccountUpdate.onAccountUpdate();
 455				}
 456			}
 457		}
 458		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 459			if (!pm.isScreenOn()) {
 460			removeStaleListeners();
 461			}*/
 462		if (wakeLock.isHeld()) {
 463			try {
 464				wakeLock.release();
 465			} catch (final RuntimeException ignored) {
 466			}
 467		}
 468		return START_STICKY;
 469	}
 470
 471	public boolean hasInternetConnection() {
 472		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 473			.getSystemService(Context.CONNECTIVITY_SERVICE);
 474		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 475		return activeNetwork != null && activeNetwork.isConnected();
 476	}
 477
 478	@SuppressLint("TrulyRandom")
 479	@Override
 480	public void onCreate() {
 481		ExceptionHelper.init(getApplicationContext());
 482		PRNGFixes.apply();
 483		this.mRandom = new SecureRandom();
 484		this.mMemorizingTrustManager = new MemorizingTrustManager(
 485				getApplicationContext());
 486
 487		final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 488		final int cacheSize = maxMemory / 8;
 489		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 490			@Override
 491			protected int sizeOf(final String key, final Bitmap bitmap) {
 492				return bitmap.getByteCount() / 1024;
 493			}
 494		};
 495
 496		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 497		this.accounts = databaseBackend.getAccounts();
 498
 499		for (final Account account : this.accounts) {
 500			account.initOtrEngine(this);
 501			this.databaseBackend.readRoster(account.getRoster());
 502		}
 503		initConversations();
 504		PhoneHelper.loadPhoneContacts(getApplicationContext(),new ArrayList<Bundle>(), this);
 505
 506		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 507		this.fileObserver.startWatching();
 508		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 509		this.pgpServiceConnection.bindToService();
 510
 511		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 512		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 513		toggleForegroundService();
 514	}
 515
 516	public void toggleForegroundService() {
 517		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 518			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 519		} else {
 520			stopForeground(true);
 521		}
 522	}
 523
 524	@Override
 525	public void onTaskRemoved(final Intent rootIntent) {
 526		super.onTaskRemoved(rootIntent);
 527		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 528			this.logoutAndSave();
 529		}
 530	}
 531
 532	private void logoutAndSave() {
 533		for (final Account account : accounts) {
 534			databaseBackend.writeRoster(account.getRoster());
 535			if (account.getXmppConnection() != null) {
 536				disconnect(account, false);
 537			}
 538		}
 539		Context context = getApplicationContext();
 540		AlarmManager alarmManager = (AlarmManager) context
 541			.getSystemService(Context.ALARM_SERVICE);
 542		Intent intent = new Intent(context, EventReceiver.class);
 543		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 544		Log.d(Config.LOGTAG, "good bye");
 545		stopSelf();
 546	}
 547
 548	protected void scheduleWakeupCall(int seconds, boolean ping) {
 549		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 550		Context context = getApplicationContext();
 551		AlarmManager alarmManager = (AlarmManager) context
 552			.getSystemService(Context.ALARM_SERVICE);
 553
 554		if (ping) {
 555			if (this.pingIntent == null) {
 556				this.pingIntent = new Intent(context, EventReceiver.class);
 557				this.pingIntent.setAction("ping");
 558				this.pingIntent.putExtra("time", timeToWake);
 559				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 560						this.pingIntent, 0);
 561				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 562						timeToWake, pendingPingIntent);
 563			} else {
 564				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 565				if (scheduledTime < SystemClock.elapsedRealtime()
 566						|| (scheduledTime > timeToWake)) {
 567					this.pingIntent.putExtra("time", timeToWake);
 568					alarmManager.cancel(this.pendingPingIntent);
 569					this.pendingPingIntent = PendingIntent.getBroadcast(
 570							context, 0, this.pingIntent, 0);
 571					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 572							timeToWake, pendingPingIntent);
 573						}
 574			}
 575		} else {
 576			Intent intent = new Intent(context, EventReceiver.class);
 577			intent.setAction("ping_check");
 578			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 579					intent, 0);
 580			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 581					alarmIntent);
 582		}
 583
 584	}
 585
 586	public XmppConnection createConnection(final Account account) {
 587		final SharedPreferences sharedPref = getPreferences();
 588		account.setResource(sharedPref.getString("resource", "mobile")
 589				.toLowerCase(Locale.getDefault()));
 590		final XmppConnection connection = new XmppConnection(account, this);
 591		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 592		connection.setOnStatusChangedListener(this.statusListener);
 593		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 594		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 595		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 596		connection.setOnBindListener(this.mOnBindListener);
 597		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 598		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 599		return connection;
 600	}
 601
 602	public void sendMessage(final Message message) {
 603		final Account account = message.getConversation().getAccount();
 604		account.deactivateGracePeriod();
 605		final Conversation conv = message.getConversation();
 606		MessagePacket packet = null;
 607		boolean saveInDb = true;
 608		boolean send = false;
 609		if (account.getStatus() == Account.State.ONLINE
 610				&& account.getXmppConnection() != null) {
 611			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 612				if (message.getCounterpart() != null) {
 613					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 614						if (!conv.hasValidOtrSession()) {
 615							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 616							message.setStatus(Message.STATUS_WAITING);
 617						} else if (conv.hasValidOtrSession()
 618								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 619							mJingleConnectionManager
 620								.createNewConnection(message);
 621								}
 622					} else {
 623						mJingleConnectionManager.createNewConnection(message);
 624					}
 625				} else {
 626					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 627						conv.startOtrIfNeeded();
 628					}
 629					message.setStatus(Message.STATUS_WAITING);
 630				}
 631			} else {
 632				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 633					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 634						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 635						message.setStatus(Message.STATUS_WAITING);
 636					} else if (conv.hasValidOtrSession()) {
 637						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 638							packet = mMessageGenerator.generateOtrChat(message);
 639							send = true;
 640						} else {
 641							message.setStatus(Message.STATUS_WAITING);
 642							conv.startOtrIfNeeded();
 643						}
 644					} else {
 645						message.setStatus(Message.STATUS_WAITING);
 646					}
 647				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 648					message.getConversation().endOtrIfNeeded();
 649					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 650						@Override
 651						public void onMessageFound(Message message) {
 652							markMessage(message,Message.STATUS_SEND_FAILED);
 653						}
 654					});
 655					packet = mMessageGenerator.generatePgpChat(message);
 656					send = true;
 657				} else {
 658					message.getConversation().endOtrIfNeeded();
 659					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 660						@Override
 661						public void onMessageFound(Message message) {
 662							markMessage(message,Message.STATUS_SEND_FAILED);
 663						}
 664					});
 665					packet = mMessageGenerator.generateChat(message);
 666					send = true;
 667				}
 668			}
 669			if (!account.getXmppConnection().getFeatures().sm()
 670					&& conv.getMode() != Conversation.MODE_MULTI) {
 671				message.setStatus(Message.STATUS_SEND);
 672					}
 673		} else {
 674			message.setStatus(Message.STATUS_WAITING);
 675			if (message.getType() == Message.TYPE_TEXT) {
 676				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 677					String pgpBody = message.getEncryptedBody();
 678					String decryptedBody = message.getBody();
 679					message.setBody(pgpBody);
 680					message.setEncryption(Message.ENCRYPTION_PGP);
 681					databaseBackend.createMessage(message);
 682					saveInDb = false;
 683					message.setBody(decryptedBody);
 684					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 685				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 686					if (!conv.hasValidOtrSession()
 687							&& message.getCounterpart() != null) {
 688						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 689							}
 690				}
 691			}
 692
 693		}
 694		conv.add(message);
 695		if (saveInDb) {
 696			if (message.getEncryption() == Message.ENCRYPTION_NONE
 697					|| saveEncryptedMessages()) {
 698				databaseBackend.createMessage(message);
 699					}
 700		}
 701		if ((send) && (packet != null)) {
 702			sendMessagePacket(account, packet);
 703		}
 704		updateConversationUi();
 705	}
 706
 707	private void sendUnsentMessages(final Conversation conversation) {
 708		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 709
 710			@Override
 711			public void onMessageFound(Message message) {
 712				resendMessage(message);
 713			}
 714		});
 715	}
 716
 717	private void resendMessage(final Message message) {
 718		Account account = message.getConversation().getAccount();
 719		MessagePacket packet = null;
 720		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 721			Presences presences = message.getConversation().getContact()
 722				.getPresences();
 723			if (!message.getConversation().hasValidOtrSession()) {
 724				if ((message.getCounterpart() != null)
 725						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 726					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 727				} else {
 728					if (presences.size() == 1) {
 729						String presence = presences.asStringArray()[0];
 730						message.getConversation().startOtrSession(presence, true);
 731					}
 732				}
 733			} else {
 734				if (message.getConversation().getOtrSession()
 735						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 736					try {
 737						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 738						if (message.getType() == Message.TYPE_TEXT) {
 739							packet = mMessageGenerator.generateOtrChat(message,
 740									true);
 741						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 742							mJingleConnectionManager.createNewConnection(message);
 743						}
 744					} catch (final InvalidJidException ignored) {
 745
 746					}
 747						}
 748			}
 749		} else if (message.getType() == Message.TYPE_TEXT) {
 750			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 751				packet = mMessageGenerator.generateChat(message, true);
 752			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 753					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 754				packet = mMessageGenerator.generatePgpChat(message, true);
 755					}
 756		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 757			Contact contact = message.getConversation().getContact();
 758			Presences presences = contact.getPresences();
 759			if ((message.getCounterpart() != null)
 760					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 761				markMessage(message, Message.STATUS_OFFERED);
 762				mJingleConnectionManager.createNewConnection(message);
 763			} else {
 764				if (presences.size() == 1) {
 765					String presence = presences.asStringArray()[0];
 766					try {
 767						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 768					} catch (InvalidJidException e) {
 769						return;
 770					}
 771					markMessage(message, Message.STATUS_OFFERED);
 772					mJingleConnectionManager.createNewConnection(message);
 773				}
 774			}
 775		}
 776		if (packet != null) {
 777			if (!account.getXmppConnection().getFeatures().sm()
 778					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 779				markMessage(message, Message.STATUS_SEND);
 780			} else {
 781				markMessage(message, Message.STATUS_UNSEND);
 782			}
 783			sendMessagePacket(account, packet);
 784		}
 785	}
 786
 787	public void fetchRosterFromServer(final Account account) {
 788		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 789		if (!"".equals(account.getRosterVersion())) {
 790			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 791					+ ": fetching roster version " + account.getRosterVersion());
 792		} else {
 793			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 794		}
 795		iqPacket.query(Xmlns.ROSTER).setAttribute("ver",
 796				account.getRosterVersion());
 797		account.getXmppConnection().sendIqPacket(iqPacket, mIqParser);
 798	}
 799
 800	public void fetchBookmarks(final Account account) {
 801		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 802		final Element query = iqPacket.query("jabber:iq:private");
 803		query.addChild("storage", "storage:bookmarks");
 804		final PacketReceived callback = new OnIqPacketReceived() {
 805
 806			@Override
 807			public void onIqPacketReceived(final Account account, final IqPacket packet) {
 808				final Element query = packet.query();
 809				final List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 810				final Element storage = query.findChild("storage",
 811						"storage:bookmarks");
 812				if (storage != null) {
 813					for (final Element item : storage.getChildren()) {
 814						if (item.getName().equals("conference")) {
 815							final Bookmark bookmark = Bookmark.parse(item, account);
 816							bookmarks.add(bookmark);
 817							Conversation conversation = find(bookmark);
 818							if (conversation != null) {
 819								conversation.setBookmark(bookmark);
 820							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 821								conversation = findOrCreateConversation(
 822										account, bookmark.getJid(), true);
 823								conversation.setBookmark(bookmark);
 824								joinMuc(conversation);
 825							}
 826						}
 827					}
 828				}
 829				account.setBookmarks(bookmarks);
 830			}
 831		};
 832		sendIqPacket(account, iqPacket, callback);
 833	}
 834
 835	public void pushBookmarks(Account account) {
 836		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 837		Element query = iqPacket.query("jabber:iq:private");
 838		Element storage = query.addChild("storage", "storage:bookmarks");
 839		for (Bookmark bookmark : account.getBookmarks()) {
 840			storage.addChild(bookmark);
 841		}
 842		sendIqPacket(account, iqPacket, null);
 843	}
 844
 845	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 846		if (mPhoneContactMergerThread != null) {
 847			mPhoneContactMergerThread.interrupt();
 848		}
 849		mPhoneContactMergerThread = new Thread(new Runnable() {
 850			@Override
 851			public void run() {
 852				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 853				for (Account account : accounts) {
 854					account.getRoster().clearSystemAccounts();
 855					for (Bundle phoneContact : phoneContacts) {
 856						if (Thread.interrupted()) {
 857							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 858							return;
 859						}
 860						Jid jid;
 861						try {
 862							jid = Jid.fromString(phoneContact.getString("jid"));
 863						} catch (final InvalidJidException e) {
 864							continue;
 865						}
 866						final Contact contact = account.getRoster().getContact(jid);
 867						String systemAccount = phoneContact.getInt("phoneid")
 868							+ "#"
 869							+ phoneContact.getString("lookup");
 870						contact.setSystemAccount(systemAccount);
 871						contact.setPhotoUri(phoneContact.getString("photouri"));
 872						getAvatarService().clear(contact);
 873						contact.setSystemName(phoneContact.getString("displayname"));
 874					}
 875				}
 876				Log.d(Config.LOGTAG,"finished merging phone contacts");
 877				updateAccountUi();
 878			}
 879		});
 880		mPhoneContactMergerThread.start();
 881	}
 882
 883	private void initConversations() {
 884		synchronized (this.conversations) {
 885			final Map<String, Account> accountLookupTable = new Hashtable<>();
 886			for (Account account : this.accounts) {
 887				accountLookupTable.put(account.getUuid(), account);
 888			}
 889			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 890			for (Conversation conversation : this.conversations) {
 891				Account account = accountLookupTable.get(conversation.getAccountUuid());
 892				conversation.setAccount(account);
 893				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 894				checkDeletedFiles(conversation);
 895			}
 896		}
 897	}
 898
 899	public List<Conversation> getConversations() {
 900		return this.conversations;
 901	}
 902
 903	private void checkDeletedFiles(Conversation conversation) {
 904		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 905
 906			@Override
 907			public void onMessageFound(Message message) {
 908				if (!getFileBackend().isFileAvailable(message)) {
 909					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 910				}
 911			}
 912		});
 913	}
 914
 915	private void markFileDeleted(String uuid) {
 916		for (Conversation conversation : getConversations()) {
 917			Message message = conversation.findMessageWithFileAndUuid(uuid);
 918			if (message != null) {
 919				if (!getFileBackend().isFileAvailable(message)) {
 920					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 921					updateConversationUi();
 922				}
 923				return;
 924			}
 925		}
 926	}
 927
 928	public void populateWithOrderedConversations(final List<Conversation> list) {
 929		populateWithOrderedConversations(list, true);
 930	}
 931
 932	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 933		list.clear();
 934		if (includeConferences) {
 935			list.addAll(getConversations());
 936		} else {
 937			for (Conversation conversation : getConversations()) {
 938				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 939					list.add(conversation);
 940				}
 941			}
 942		}
 943		Collections.sort(list, new Comparator<Conversation>() {
 944			@Override
 945			public int compare(Conversation lhs, Conversation rhs) {
 946				Message left = lhs.getLatestMessage();
 947				Message right = rhs.getLatestMessage();
 948				if (left.getTimeSent() > right.getTimeSent()) {
 949					return -1;
 950				} else if (left.getTimeSent() < right.getTimeSent()) {
 951					return 1;
 952				} else {
 953					return 0;
 954				}
 955			}
 956		});
 957	}
 958
 959	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
 960		Log.d(Config.LOGTAG,"load more messages for "+conversation.getName() + " prior to "+MessageGenerator.getTimestamp(timestamp));
 961		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
 962			return;
 963		}
 964		new Thread(new Runnable() {
 965			@Override
 966			public void run() {
 967				final Account account = conversation.getAccount();
 968				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
 969				if (messages.size() > 0) {
 970					conversation.addAll(0, messages);
 971					callback.onMoreMessagesLoaded(messages.size(), conversation);
 972				} else if (account.getStatus() == Account.State.ONLINE && account.getXmppConnection() != null && account.getXmppConnection().getFeatures().mam()) {
 973					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
 974					if (query != null) {
 975						query.setCallback(callback);
 976					}
 977					callback.informUser(R.string.fetching_history_from_server);
 978				}
 979			}
 980		}).start();
 981	}
 982
 983	public interface OnMoreMessagesLoaded {
 984		public void onMoreMessagesLoaded(int count,Conversation conversation);
 985		public void informUser(int r);
 986	}
 987
 988	public List<Account> getAccounts() {
 989		return this.accounts;
 990	}
 991
 992	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
 993		for (final Conversation conversation : haystack) {
 994			if (conversation.getContact() == contact) {
 995				return conversation;
 996			}
 997		}
 998		return null;
 999	}
1000
1001	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1002		if (jid == null ) {
1003			return null;
1004		}
1005		for (final Conversation conversation : haystack) {
1006			if ((account == null || conversation.getAccount() == account)
1007					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1008				return conversation;
1009					}
1010		}
1011		return null;
1012	}
1013
1014	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
1015		return this.findOrCreateConversation(account,jid,muc,null);
1016	}
1017
1018	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1019		synchronized (this.conversations) {
1020			Conversation conversation = find(account, jid);
1021			if (conversation != null) {
1022				return conversation;
1023			}
1024			conversation = databaseBackend.findConversation(account, jid);
1025			if (conversation != null) {
1026				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1027				conversation.setAccount(account);
1028				if (muc) {
1029					conversation.setMode(Conversation.MODE_MULTI);
1030				} else {
1031					conversation.setMode(Conversation.MODE_SINGLE);
1032				}
1033				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1034				this.databaseBackend.updateConversation(conversation);
1035			} else {
1036				String conversationName;
1037				Contact contact = account.getRoster().getContact(jid);
1038				if (contact != null) {
1039					conversationName = contact.getDisplayName();
1040				} else {
1041					conversationName = jid.getLocalpart();
1042				}
1043				if (muc) {
1044					conversation = new Conversation(conversationName, account, jid,
1045							Conversation.MODE_MULTI);
1046				} else {
1047					conversation = new Conversation(conversationName, account, jid,
1048							Conversation.MODE_SINGLE);
1049				}
1050				this.databaseBackend.createConversation(conversation);
1051			}
1052			if (query == null) {
1053				this.mMessageArchiveService.query(conversation);
1054			} else {
1055				if (query.getConversation() == null) {
1056					this.mMessageArchiveService.query(conversation,query.getStart());
1057				}
1058			}
1059			this.conversations.add(conversation);
1060			updateConversationUi();
1061			return conversation;
1062		}
1063	}
1064
1065	public void archiveConversation(Conversation conversation) {
1066		synchronized (this.conversations) {
1067			if (conversation.getMode() == Conversation.MODE_MULTI) {
1068				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1069					Bookmark bookmark = conversation.getBookmark();
1070					if (bookmark != null && bookmark.autojoin()) {
1071						bookmark.setAutojoin(false);
1072						pushBookmarks(bookmark.getAccount());
1073					}
1074				}
1075				leaveMuc(conversation);
1076			} else {
1077				conversation.endOtrIfNeeded();
1078			}
1079			this.databaseBackend.updateConversation(conversation);
1080			this.conversations.remove(conversation);
1081			updateConversationUi();
1082		}
1083	}
1084
1085	public void createAccount(Account account) {
1086		account.initOtrEngine(this);
1087		databaseBackend.createAccount(account);
1088		this.accounts.add(account);
1089		this.reconnectAccount(account, false);
1090		updateAccountUi();
1091	}
1092
1093	public void updateAccount(Account account) {
1094		this.statusListener.onStatusChanged(account);
1095		databaseBackend.updateAccount(account);
1096		reconnectAccount(account, false);
1097		updateAccountUi();
1098		getNotificationService().updateErrorNotification();
1099	}
1100
1101	public void deleteAccount(Account account) {
1102		synchronized (this.conversations) {
1103			for (Conversation conversation : conversations) {
1104				if (conversation.getAccount() == account) {
1105					if (conversation.getMode() == Conversation.MODE_MULTI) {
1106						leaveMuc(conversation);
1107					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1108						conversation.endOtrIfNeeded();
1109					}
1110					conversations.remove(conversation);
1111				}
1112			}
1113			if (account.getXmppConnection() != null) {
1114				this.disconnect(account, true);
1115			}
1116			databaseBackend.deleteAccount(account);
1117			this.accounts.remove(account);
1118			updateAccountUi();
1119			getNotificationService().updateErrorNotification();
1120		}
1121	}
1122
1123	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1124		synchronized (this) {
1125			if (checkListeners()) {
1126				switchToForeground();
1127			}
1128			this.mOnConversationUpdate = listener;
1129			this.mNotificationService.setIsInForeground(true);
1130			if (this.convChangedListenerCount < 2) {
1131				this.convChangedListenerCount++;
1132			}
1133		}
1134	}
1135
1136	public void removeOnConversationListChangedListener() {
1137		synchronized (this) {
1138			this.convChangedListenerCount--;
1139			if (this.convChangedListenerCount <= 0) {
1140				this.convChangedListenerCount = 0;
1141				this.mOnConversationUpdate = null;
1142				this.mNotificationService.setIsInForeground(false);
1143				if (checkListeners()) {
1144					switchToBackground();
1145				}
1146			}
1147		}
1148	}
1149
1150	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1151		synchronized (this) {
1152			if (checkListeners()) {
1153				switchToForeground();
1154			}
1155			this.mOnAccountUpdate = listener;
1156			if (this.accountChangedListenerCount < 2) {
1157				this.accountChangedListenerCount++;
1158			}
1159		}
1160	}
1161
1162	public void removeOnAccountListChangedListener() {
1163		synchronized (this) {
1164			this.accountChangedListenerCount--;
1165			if (this.accountChangedListenerCount <= 0) {
1166				this.mOnAccountUpdate = null;
1167				this.accountChangedListenerCount = 0;
1168				if (checkListeners()) {
1169					switchToBackground();
1170				}
1171			}
1172		}
1173	}
1174
1175	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
1176		synchronized (this) {
1177			if (checkListeners()) {
1178				switchToForeground();
1179			}
1180			this.mOnRosterUpdate = listener;
1181			if (this.rosterChangedListenerCount < 2) {
1182				this.rosterChangedListenerCount++;
1183			}
1184		}
1185	}
1186
1187	public void removeOnRosterUpdateListener() {
1188		synchronized (this) {
1189			this.rosterChangedListenerCount--;
1190			if (this.rosterChangedListenerCount <= 0) {
1191				this.rosterChangedListenerCount = 0;
1192				this.mOnRosterUpdate = null;
1193				if (checkListeners()) {
1194					switchToBackground();
1195				}
1196			}
1197		}
1198	}
1199
1200	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
1201		synchronized (this) {
1202			if (checkListeners()) {
1203				switchToForeground();
1204			}
1205			this.mOnUpdateBlocklist = listener;
1206			if (this.updateBlocklistListenerCount < 2) {
1207				this.updateBlocklistListenerCount++;
1208			}
1209		}
1210	}
1211
1212	public void removeOnUpdateBlocklistListener() {
1213		synchronized (this) {
1214			this.updateBlocklistListenerCount--;
1215			if (this.updateBlocklistListenerCount <= 0) {
1216				this.updateBlocklistListenerCount = 0;
1217				this.mOnUpdateBlocklist = null;
1218				if (checkListeners()) {
1219					switchToBackground();
1220				}
1221			}
1222		}
1223	}
1224
1225	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1226		synchronized (this) {
1227			if (checkListeners()) {
1228				switchToForeground();
1229			}
1230			this.mOnMucRosterUpdate = listener;
1231			if (this.mucRosterChangedListenerCount < 2) {
1232				this.mucRosterChangedListenerCount++;
1233			}
1234		}
1235	}
1236
1237	public void removeOnMucRosterUpdateListener() {
1238		synchronized (this) {
1239			this.mucRosterChangedListenerCount--;
1240			if (this.mucRosterChangedListenerCount <= 0) {
1241				this.mucRosterChangedListenerCount = 0;
1242				this.mOnMucRosterUpdate = null;
1243				if (checkListeners()) {
1244					switchToBackground();
1245				}
1246			}
1247		}
1248	}
1249
1250	private boolean checkListeners() {
1251		return (this.mOnAccountUpdate == null
1252				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1253	}
1254
1255	private void switchToForeground() {
1256		for (Account account : getAccounts()) {
1257			if (account.getStatus() == Account.State.ONLINE) {
1258				XmppConnection connection = account.getXmppConnection();
1259				if (connection != null && connection.getFeatures().csi()) {
1260					connection.sendActive();
1261				}
1262			}
1263		}
1264		Log.d(Config.LOGTAG, "app switched into foreground");
1265	}
1266
1267	private void switchToBackground() {
1268		for (Account account : getAccounts()) {
1269			if (account.getStatus() == Account.State.ONLINE) {
1270				XmppConnection connection = account.getXmppConnection();
1271				if (connection != null && connection.getFeatures().csi()) {
1272					connection.sendInactive();
1273				}
1274			}
1275		}
1276		this.mNotificationService.setIsInForeground(false);
1277		Log.d(Config.LOGTAG, "app switched into background");
1278	}
1279
1280	private void connectMultiModeConversations(Account account) {
1281		List<Conversation> conversations = getConversations();
1282		for (Conversation conversation : conversations) {
1283			if ((conversation.getMode() == Conversation.MODE_MULTI)
1284					&& (conversation.getAccount() == account)) {
1285				conversation.resetMucOptions();
1286				joinMuc(conversation);
1287					}
1288		}
1289	}
1290
1291	public void joinMuc(Conversation conversation) {
1292		Account account = conversation.getAccount();
1293		account.pendingConferenceJoins.remove(conversation);
1294		account.pendingConferenceLeaves.remove(conversation);
1295		if (account.getStatus() == Account.State.ONLINE) {
1296			final String nick = conversation.getMucOptions().getProposedNick();
1297			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1298			if (joinJid == null) {
1299				return; //safety net
1300			}
1301			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1302			PresencePacket packet = new PresencePacket();
1303			packet.setFrom(conversation.getAccount().getJid());
1304			packet.setTo(joinJid);
1305			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1306			if (conversation.getMucOptions().getPassword() != null) {
1307				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1308			}
1309			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1310			String sig = account.getPgpSignature();
1311			if (sig != null) {
1312				packet.addChild("status").setContent("online");
1313				packet.addChild("x", "jabber:x:signed").setContent(sig);
1314			}
1315			sendPresencePacket(account, packet);
1316			if (!joinJid.equals(conversation.getJid())) {
1317				conversation.setContactJid(joinJid);
1318				databaseBackend.updateConversation(conversation);
1319			}
1320		} else {
1321			account.pendingConferenceJoins.add(conversation);
1322		}
1323	}
1324
1325	public void providePasswordForMuc(Conversation conversation, String password) {
1326		if (conversation.getMode() == Conversation.MODE_MULTI) {
1327			conversation.getMucOptions().setPassword(password);
1328			if (conversation.getBookmark() != null) {
1329				conversation.getBookmark().setAutojoin(true);
1330				pushBookmarks(conversation.getAccount());
1331			}
1332			databaseBackend.updateConversation(conversation);
1333			joinMuc(conversation);
1334		}
1335	}
1336
1337	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1338		final MucOptions options = conversation.getMucOptions();
1339		final Jid joinJid = options.createJoinJid(nick);
1340		if (options.online()) {
1341			Account account = conversation.getAccount();
1342			options.setOnRenameListener(new OnRenameListener() {
1343
1344				@Override
1345				public void onSuccess() {
1346					conversation.setContactJid(joinJid);
1347					databaseBackend.updateConversation(conversation);
1348					Bookmark bookmark = conversation.getBookmark();
1349					if (bookmark != null) {
1350						bookmark.setNick(nick);
1351						pushBookmarks(bookmark.getAccount());
1352					}
1353					callback.success(conversation);
1354				}
1355
1356				@Override
1357				public void onFailure() {
1358					callback.error(R.string.nick_in_use, conversation);
1359				}
1360			});
1361
1362			PresencePacket packet = new PresencePacket();
1363			packet.setTo(joinJid);
1364			packet.setFrom(conversation.getAccount().getJid());
1365
1366			String sig = account.getPgpSignature();
1367			if (sig != null) {
1368				packet.addChild("status").setContent("online");
1369				packet.addChild("x", "jabber:x:signed").setContent(sig);
1370			}
1371			sendPresencePacket(account, packet);
1372		} else {
1373			conversation.setContactJid(joinJid);
1374			databaseBackend.updateConversation(conversation);
1375			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1376				Bookmark bookmark = conversation.getBookmark();
1377				if (bookmark != null) {
1378					bookmark.setNick(nick);
1379					pushBookmarks(bookmark.getAccount());
1380				}
1381				joinMuc(conversation);
1382			}
1383		}
1384	}
1385
1386	public void leaveMuc(Conversation conversation) {
1387		Account account = conversation.getAccount();
1388		account.pendingConferenceJoins.remove(conversation);
1389		account.pendingConferenceLeaves.remove(conversation);
1390		if (account.getStatus() == Account.State.ONLINE) {
1391			PresencePacket packet = new PresencePacket();
1392			packet.setTo(conversation.getJid());
1393			packet.setFrom(conversation.getAccount().getJid());
1394			packet.setAttribute("type", "unavailable");
1395			sendPresencePacket(conversation.getAccount(), packet);
1396			conversation.getMucOptions().setOffline();
1397			conversation.deregisterWithBookmark();
1398			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1399					+ ": leaving muc " + conversation.getJid());
1400		} else {
1401			account.pendingConferenceLeaves.add(conversation);
1402		}
1403	}
1404
1405	private String findConferenceServer(final Account account) {
1406		String server;
1407		if (account.getXmppConnection() != null) {
1408			server = account.getXmppConnection().getMucServer();
1409			if (server != null) {
1410				return server;
1411			}
1412		}
1413		for(Account other : getAccounts()) {
1414			if (other != account && other.getXmppConnection() != null) {
1415				server = other.getXmppConnection().getMucServer();
1416				if (server != null) {
1417					return server;
1418				}
1419			}
1420		}
1421		return null;
1422	}
1423
1424	public void createAdhocConference(final Account account, final Iterable<Jid> jids, final UiCallback<Conversation> callback) {
1425		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
1426		if (account.getStatus() == Account.State.ONLINE) {
1427			try {
1428				String server = findConferenceServer(account);
1429				if (server == null) {
1430					if (callback != null) {
1431						callback.error(R.string.no_conference_server_found,null);
1432					}
1433					return;
1434				}
1435				String name = new BigInteger(75,getRNG()).toString(32);
1436				Jid jid = Jid.fromParts(name,server,null);
1437				final Conversation conversation = findOrCreateConversation(account, jid, true);
1438				joinMuc(conversation);
1439				Bundle options = new Bundle();
1440				options.putString("muc#roomconfig_persistentroom", "1");
1441				options.putString("muc#roomconfig_membersonly", "1");
1442				options.putString("muc#roomconfig_publicroom", "0");
1443				options.putString("muc#roomconfig_whois", "anyone");
1444				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1445					@Override
1446					public void onPushSucceeded() {
1447						for(Jid invite : jids) {
1448							invite(conversation,invite);
1449						}
1450						if (callback != null) {
1451							callback.success(conversation);
1452						}
1453					}
1454
1455					@Override
1456					public void onPushFailed() {
1457						if (callback != null) {
1458							callback.error(R.string.conference_creation_failed, conversation);
1459						}
1460					}
1461				});
1462
1463			} catch (InvalidJidException e) {
1464				if (callback != null) {
1465					callback.error(R.string.conference_creation_failed, null);
1466				}
1467			}
1468		} else {
1469			if (callback != null) {
1470				callback.error(R.string.not_connected_try_again,null);
1471			}
1472		}
1473	}
1474
1475	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1476		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1477		request.setTo(conversation.getJid().toBareJid());
1478		request.query("http://jabber.org/protocol/muc#owner");
1479		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1480			@Override
1481			public void onIqPacketReceived(Account account, IqPacket packet) {
1482				if (packet.getType() != IqPacket.TYPE_ERROR) {
1483					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1484					for (Field field : data.getFields()) {
1485						if (options.containsKey(field.getName())) {
1486							field.setValue(options.getString(field.getName()));
1487						}
1488					}
1489					data.submit();
1490					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1491					set.setTo(conversation.getJid().toBareJid());
1492					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1493					sendIqPacket(account, set, new OnIqPacketReceived() {
1494						@Override
1495						public void onIqPacketReceived(Account account, IqPacket packet) {
1496							if (packet.getType() == IqPacket.TYPE_RESULT) {
1497								if (callback != null) {
1498									callback.onPushSucceeded();
1499								}
1500							} else {
1501								if (callback != null) {
1502									callback.onPushFailed();
1503								}
1504							}
1505						}
1506					});
1507				} else {
1508					if (callback != null) {
1509						callback.onPushFailed();
1510					}
1511				}
1512			}
1513		});
1514	}
1515
1516	public void disconnect(Account account, boolean force) {
1517		if ((account.getStatus() == Account.State.ONLINE)
1518				|| (account.getStatus() == Account.State.DISABLED)) {
1519			if (!force) {
1520				List<Conversation> conversations = getConversations();
1521				for (Conversation conversation : conversations) {
1522					if (conversation.getAccount() == account) {
1523						if (conversation.getMode() == Conversation.MODE_MULTI) {
1524							leaveMuc(conversation);
1525						} else {
1526							if (conversation.endOtrIfNeeded()) {
1527								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1528										+ ": ended otr session with "
1529										+ conversation.getJid());
1530							}
1531						}
1532					}
1533				}
1534			}
1535			account.getXmppConnection().disconnect(force);
1536				}
1537	}
1538
1539	@Override
1540	public IBinder onBind(Intent intent) {
1541		return mBinder;
1542	}
1543
1544	public void updateMessage(Message message) {
1545		databaseBackend.updateMessage(message);
1546		updateConversationUi();
1547	}
1548
1549	protected void syncDirtyContacts(Account account) {
1550		for (Contact contact : account.getRoster().getContacts()) {
1551			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1552				pushContactToServer(contact);
1553			}
1554			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1555				deleteContactOnServer(contact);
1556			}
1557		}
1558	}
1559
1560	public void createContact(Contact contact) {
1561		SharedPreferences sharedPref = getPreferences();
1562		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1563		if (autoGrant) {
1564			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1565			contact.setOption(Contact.Options.ASKING);
1566		}
1567		pushContactToServer(contact);
1568	}
1569
1570	public void onOtrSessionEstablished(Conversation conversation) {
1571		final Account account = conversation.getAccount();
1572		final Session otrSession = conversation.getOtrSession();
1573		Log.d(Config.LOGTAG,
1574				account.getJid().toBareJid() + " otr session established with "
1575				+ conversation.getJid() + "/"
1576				+ otrSession.getSessionID().getUserID());
1577		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1578
1579			@Override
1580			public void onMessageFound(Message message) {
1581				SessionID id = otrSession.getSessionID();
1582				try {
1583					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1584				} catch (InvalidJidException e) {
1585					return;
1586				}
1587				if (message.getType() == Message.TYPE_TEXT) {
1588					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1589					if (outPacket != null) {
1590						message.setStatus(Message.STATUS_SEND);
1591						databaseBackend.updateMessage(message);
1592						sendMessagePacket(account, outPacket);
1593					}
1594				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1595					mJingleConnectionManager.createNewConnection(message);
1596				}
1597				updateConversationUi();
1598			}
1599		});
1600	}
1601
1602	public boolean renewSymmetricKey(Conversation conversation) {
1603		Account account = conversation.getAccount();
1604		byte[] symmetricKey = new byte[32];
1605		this.mRandom.nextBytes(symmetricKey);
1606		Session otrSession = conversation.getOtrSession();
1607		if (otrSession != null) {
1608			MessagePacket packet = new MessagePacket();
1609			packet.setType(MessagePacket.TYPE_CHAT);
1610			packet.setFrom(account.getJid());
1611			packet.addChild("private", "urn:xmpp:carbons:2");
1612			packet.addChild("no-copy", "urn:xmpp:hints");
1613			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1614					+ otrSession.getSessionID().getUserID());
1615			try {
1616				packet.setBody(otrSession
1617						.transformSending(CryptoHelper.FILETRANSFER
1618							+ CryptoHelper.bytesToHex(symmetricKey)));
1619				sendMessagePacket(account, packet);
1620				conversation.setSymmetricKey(symmetricKey);
1621				return true;
1622			} catch (OtrException e) {
1623				return false;
1624			}
1625		}
1626		return false;
1627	}
1628
1629	public void pushContactToServer(final Contact contact) {
1630		contact.resetOption(Contact.Options.DIRTY_DELETE);
1631		contact.setOption(Contact.Options.DIRTY_PUSH);
1632		final Account account = contact.getAccount();
1633		if (account.getStatus() == Account.State.ONLINE) {
1634			final boolean ask = contact.getOption(Contact.Options.ASKING);
1635			final boolean sendUpdates = contact
1636				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1637				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1638			final IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1639			iq.query(Xmlns.ROSTER).addChild(contact.asElement());
1640			account.getXmppConnection().sendIqPacket(iq, null);
1641			if (sendUpdates) {
1642				sendPresencePacket(account,
1643						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1644			}
1645			if (ask) {
1646				sendPresencePacket(account,
1647						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1648			}
1649		}
1650	}
1651
1652	public void publishAvatar(final Account account,
1653			final Uri image,
1654			final UiCallback<Avatar> callback) {
1655		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1656		final int size = Config.AVATAR_SIZE;
1657		final Avatar avatar = getFileBackend()
1658			.getPepAvatar(image, size, format);
1659		if (avatar != null) {
1660			avatar.height = size;
1661			avatar.width = size;
1662			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1663				avatar.type = "image/webp";
1664			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1665				avatar.type = "image/jpeg";
1666			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1667				avatar.type = "image/png";
1668			}
1669			if (!getFileBackend().save(avatar)) {
1670				callback.error(R.string.error_saving_avatar, avatar);
1671				return;
1672			}
1673			final IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1674			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1675
1676				@Override
1677				public void onIqPacketReceived(Account account, IqPacket result) {
1678					if (result.getType() == IqPacket.TYPE_RESULT) {
1679						final IqPacket packet = XmppConnectionService.this.mIqGenerator
1680							.publishAvatarMetadata(avatar);
1681						sendIqPacket(account, packet, new OnIqPacketReceived() {
1682
1683							@Override
1684							public void onIqPacketReceived(Account account,
1685									IqPacket result) {
1686								if (result.getType() == IqPacket.TYPE_RESULT) {
1687									if (account.setAvatar(avatar.getFilename())) {
1688										databaseBackend.updateAccount(account);
1689									}
1690									callback.success(avatar);
1691								} else {
1692									callback.error(
1693											R.string.error_publish_avatar_server_reject,
1694											avatar);
1695								}
1696							}
1697						});
1698					} else {
1699						callback.error(
1700								R.string.error_publish_avatar_server_reject,
1701								avatar);
1702					}
1703				}
1704			});
1705		} else {
1706			callback.error(R.string.error_publish_avatar_converting, null);
1707		}
1708	}
1709
1710	public void fetchAvatar(Account account, Avatar avatar) {
1711		fetchAvatar(account, avatar, null);
1712	}
1713
1714	public void fetchAvatar(Account account, final Avatar avatar,
1715			final UiCallback<Avatar> callback) {
1716		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1717		sendIqPacket(account, packet, new OnIqPacketReceived() {
1718
1719			@Override
1720			public void onIqPacketReceived(Account account, IqPacket result) {
1721				final String ERROR = account.getJid().toBareJid()
1722					+ ": fetching avatar for " + avatar.owner + " failed ";
1723				if (result.getType() == IqPacket.TYPE_RESULT) {
1724					avatar.image = mIqParser.avatarData(result);
1725					if (avatar.image != null) {
1726						if (getFileBackend().save(avatar)) {
1727							if (account.getJid().toBareJid().equals(avatar.owner)) {
1728								if (account.setAvatar(avatar.getFilename())) {
1729									databaseBackend.updateAccount(account);
1730								}
1731								getAvatarService().clear(account);
1732								updateConversationUi();
1733								updateAccountUi();
1734							} else {
1735								Contact contact = account.getRoster()
1736									.getContact(avatar.owner);
1737								contact.setAvatar(avatar.getFilename());
1738								getAvatarService().clear(contact);
1739								updateConversationUi();
1740								updateRosterUi();
1741							}
1742							if (callback != null) {
1743								callback.success(avatar);
1744							}
1745							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1746									+ ": succesfully fetched avatar for "
1747									+ avatar.owner);
1748							return;
1749						}
1750					} else {
1751
1752						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1753					}
1754				} else {
1755					Element error = result.findChild("error");
1756					if (error == null) {
1757						Log.d(Config.LOGTAG, ERROR + "(server error)");
1758					} else {
1759						Log.d(Config.LOGTAG, ERROR + error.toString());
1760					}
1761				}
1762				if (callback != null) {
1763					callback.error(0, null);
1764				}
1765
1766			}
1767		});
1768	}
1769
1770	public void checkForAvatar(Account account,
1771			final UiCallback<Avatar> callback) {
1772		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1773		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1774
1775			@Override
1776			public void onIqPacketReceived(Account account, IqPacket packet) {
1777				if (packet.getType() == IqPacket.TYPE_RESULT) {
1778					Element pubsub = packet.findChild("pubsub",
1779							"http://jabber.org/protocol/pubsub");
1780					if (pubsub != null) {
1781						Element items = pubsub.findChild("items");
1782						if (items != null) {
1783							Avatar avatar = Avatar.parseMetadata(items);
1784							if (avatar != null) {
1785								avatar.owner = account.getJid().toBareJid();
1786								if (fileBackend.isAvatarCached(avatar)) {
1787									if (account.setAvatar(avatar.getFilename())) {
1788										databaseBackend.updateAccount(account);
1789									}
1790									getAvatarService().clear(account);
1791									callback.success(avatar);
1792								} else {
1793									fetchAvatar(account, avatar, callback);
1794								}
1795								return;
1796							}
1797						}
1798					}
1799				}
1800				callback.error(0, null);
1801			}
1802		});
1803	}
1804
1805	public void deleteContactOnServer(Contact contact) {
1806		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1807		contact.resetOption(Contact.Options.DIRTY_PUSH);
1808		contact.setOption(Contact.Options.DIRTY_DELETE);
1809		Account account = contact.getAccount();
1810		if (account.getStatus() == Account.State.ONLINE) {
1811			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1812			Element item = iq.query(Xmlns.ROSTER).addChild("item");
1813			item.setAttribute("jid", contact.getJid().toString());
1814			item.setAttribute("subscription", "remove");
1815			account.getXmppConnection().sendIqPacket(iq, null);
1816		}
1817	}
1818
1819	public void updateConversation(Conversation conversation) {
1820		this.databaseBackend.updateConversation(conversation);
1821	}
1822
1823	public void reconnectAccount(final Account account, final boolean force) {
1824		new Thread(new Runnable() {
1825
1826			@Override
1827			public void run() {
1828				if (account.getXmppConnection() != null) {
1829					disconnect(account, force);
1830				}
1831				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1832					if (account.getXmppConnection() == null) {
1833						account.setXmppConnection(createConnection(account));
1834					}
1835					Thread thread = new Thread(account.getXmppConnection());
1836					thread.start();
1837					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1838							false);
1839				} else {
1840					account.getRoster().clearPresences();
1841					account.setXmppConnection(null);
1842				}
1843			}
1844		}).start();
1845	}
1846
1847	public void invite(Conversation conversation, Jid contact) {
1848		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1849		sendMessagePacket(conversation.getAccount(), packet);
1850	}
1851
1852	public void resetSendingToWaiting(Account account) {
1853		for (Conversation conversation : getConversations()) {
1854			if (conversation.getAccount() == account) {
1855				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1856
1857					@Override
1858					public void onMessageFound(Message message) {
1859						markMessage(message, Message.STATUS_WAITING);
1860					}
1861				});
1862			}
1863		}
1864	}
1865
1866	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1867			final int status) {
1868		if (uuid == null) {
1869			return false;
1870		} else {
1871			for (Conversation conversation : getConversations()) {
1872				if (conversation.getJid().equals(recipient)
1873						&& conversation.getAccount().equals(account)) {
1874					return markMessage(conversation, uuid, status);
1875						}
1876			}
1877			return false;
1878		}
1879	}
1880
1881	public boolean markMessage(Conversation conversation, String uuid,
1882			int status) {
1883		if (uuid == null) {
1884			return false;
1885		} else {
1886			Message message = conversation.findSentMessageWithUuid(uuid);
1887			if (message!=null) {
1888				markMessage(message,status);
1889				return true;
1890			} else {
1891				return false;
1892			}
1893		}
1894	}
1895
1896	public void markMessage(Message message, int status) {
1897		if (status == Message.STATUS_SEND_FAILED
1898				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1899					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1900			return;
1901					}
1902		message.setStatus(status);
1903		databaseBackend.updateMessage(message);
1904		updateConversationUi();
1905	}
1906
1907	public SharedPreferences getPreferences() {
1908		return PreferenceManager
1909			.getDefaultSharedPreferences(getApplicationContext());
1910	}
1911
1912	public boolean forceEncryption() {
1913		return getPreferences().getBoolean("force_encryption", false);
1914	}
1915
1916	public boolean confirmMessages() {
1917		return getPreferences().getBoolean("confirm_messages", true);
1918	}
1919
1920	public boolean saveEncryptedMessages() {
1921		return !getPreferences().getBoolean("dont_save_encrypted", false);
1922	}
1923
1924	public boolean indicateReceived() {
1925		return getPreferences().getBoolean("indicate_received", false);
1926	}
1927
1928	public void updateConversationUi() {
1929		if (mOnConversationUpdate != null) {
1930			mOnConversationUpdate.onConversationUpdate();
1931		}
1932	}
1933
1934	public void updateAccountUi() {
1935		if (mOnAccountUpdate != null) {
1936			mOnAccountUpdate.onAccountUpdate();
1937		}
1938	}
1939
1940	public void updateRosterUi() {
1941		if (mOnRosterUpdate != null) {
1942			mOnRosterUpdate.onRosterUpdate();
1943		}
1944	}
1945
1946	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
1947		if (mOnUpdateBlocklist != null) {
1948			mOnUpdateBlocklist.OnUpdateBlocklist(status);
1949		}
1950	}
1951
1952	public void updateMucRosterUi() {
1953		if (mOnMucRosterUpdate != null) {
1954			mOnMucRosterUpdate.onMucRosterUpdate();
1955		}
1956	}
1957
1958	public Account findAccountByJid(final Jid accountJid) {
1959		for (Account account : this.accounts) {
1960			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1961				return account;
1962			}
1963		}
1964		return null;
1965	}
1966
1967	public Conversation findConversationByUuid(String uuid) {
1968		for (Conversation conversation : getConversations()) {
1969			if (conversation.getUuid().equals(uuid)) {
1970				return conversation;
1971			}
1972		}
1973		return null;
1974	}
1975
1976	public void markRead(Conversation conversation, boolean calledByUi) {
1977		mNotificationService.clear(conversation);
1978		final Message markable = conversation.getLatestMarkableMessage();
1979		conversation.markRead();
1980		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1981			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1982			Account account = conversation.getAccount();
1983			final Jid to = markable.getCounterpart();
1984			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1985			this.sendMessagePacket(conversation.getAccount(),packet);
1986		}
1987		if (!calledByUi) {
1988			updateConversationUi();
1989		}
1990	}
1991
1992	public SecureRandom getRNG() {
1993		return this.mRandom;
1994	}
1995
1996	public MemorizingTrustManager getMemorizingTrustManager() {
1997		return this.mMemorizingTrustManager;
1998	}
1999
2000	public PowerManager getPowerManager() {
2001		return this.pm;
2002	}
2003
2004	public LruCache<String, Bitmap> getBitmapCache() {
2005		return this.mBitmapCache;
2006	}
2007
2008	public void syncRosterToDisk(final Account account) {
2009		new Thread(new Runnable() {
2010
2011			@Override
2012			public void run() {
2013				databaseBackend.writeRoster(account.getRoster());
2014			}
2015		}).start();
2016
2017	}
2018
2019	public List<String> getKnownHosts() {
2020		final List<String> hosts = new ArrayList<>();
2021		for (final Account account : getAccounts()) {
2022			if (!hosts.contains(account.getServer().toString())) {
2023				hosts.add(account.getServer().toString());
2024			}
2025			for (final Contact contact : account.getRoster().getContacts()) {
2026				if (contact.showInRoster()) {
2027					final String server = contact.getServer().toString();
2028					if (server != null && !hosts.contains(server)) {
2029						hosts.add(server);
2030					}
2031				}
2032			}
2033		}
2034		return hosts;
2035	}
2036
2037	public List<String> getKnownConferenceHosts() {
2038		final ArrayList<String> mucServers = new ArrayList<>();
2039		for (final Account account : accounts) {
2040			if (account.getXmppConnection() != null) {
2041				final String server = account.getXmppConnection().getMucServer();
2042				if (server != null && !mucServers.contains(server)) {
2043					mucServers.add(server);
2044				}
2045			}
2046		}
2047		return mucServers;
2048	}
2049
2050	public void sendMessagePacket(Account account, MessagePacket packet) {
2051		XmppConnection connection = account.getXmppConnection();
2052		if (connection != null) {
2053			connection.sendMessagePacket(packet);
2054		}
2055	}
2056
2057	public void sendPresencePacket(Account account, PresencePacket packet) {
2058		XmppConnection connection = account.getXmppConnection();
2059		if (connection != null) {
2060			connection.sendPresencePacket(packet);
2061		}
2062	}
2063
2064	public void sendIqPacket(final Account account, final IqPacket packet, final PacketReceived callback) {
2065		final XmppConnection connection = account.getXmppConnection();
2066		if (connection != null) {
2067			connection.sendIqPacket(packet, callback);
2068		}
2069	}
2070
2071	public MessageGenerator getMessageGenerator() {
2072		return this.mMessageGenerator;
2073	}
2074
2075	public PresenceGenerator getPresenceGenerator() {
2076		return this.mPresenceGenerator;
2077	}
2078
2079	public IqGenerator getIqGenerator() {
2080		return this.mIqGenerator;
2081	}
2082
2083	public IqParser getIqParser() { return this.mIqParser; }
2084
2085	public JingleConnectionManager getJingleConnectionManager() {
2086		return this.mJingleConnectionManager;
2087	}
2088
2089	public MessageArchiveService getMessageArchiveService() {
2090		return this.mMessageArchiveService;
2091	}
2092
2093	public List<Contact> findContacts(Jid jid) {
2094		ArrayList<Contact> contacts = new ArrayList<>();
2095		for (Account account : getAccounts()) {
2096			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2097				Contact contact = account.getRoster().getContactFromRoster(jid);
2098				if (contact != null) {
2099					contacts.add(contact);
2100				}
2101			}
2102		}
2103		return contacts;
2104	}
2105
2106	public NotificationService getNotificationService() {
2107		return this.mNotificationService;
2108	}
2109
2110	public HttpConnectionManager getHttpConnectionManager() {
2111		return this.mHttpConnectionManager;
2112	}
2113
2114	public void resendFailedMessages(final Message message) {
2115		final Collection<Message> messages = new ArrayList<>();
2116		Message current = message;
2117		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2118			messages.add(current);
2119			if (current.mergeable(current.next())) {
2120				current = current.next();
2121			} else {
2122				break;
2123			}
2124		}
2125		for (final Message msg : messages) {
2126			markMessage(msg, Message.STATUS_WAITING);
2127			this.resendMessage(msg);
2128		}
2129	}
2130
2131	public void clearConversationHistory(final Conversation conversation) {
2132		conversation.clearMessages();
2133		new Thread(new Runnable() {
2134			@Override
2135			public void run() {
2136				databaseBackend.deleteMessagesInConversation(conversation);
2137			}
2138		}).start();
2139	}
2140
2141	public interface OnConversationUpdate {
2142		public void onConversationUpdate();
2143	}
2144
2145	public interface OnAccountUpdate {
2146		public void onAccountUpdate();
2147	}
2148
2149	public interface OnRosterUpdate {
2150		public void onRosterUpdate();
2151	}
2152
2153	public interface OnMucRosterUpdate {
2154		public void onMucRosterUpdate();
2155	}
2156
2157	private interface OnConferenceOptionsPushed {
2158		public void onPushSucceeded();
2159		public void onPushFailed();
2160	}
2161
2162	public class XmppConnectionBinder extends Binder {
2163		public XmppConnectionService getService() {
2164			return XmppConnectionService.this;
2165		}
2166	}
2167
2168	public void sendBlockRequest(final Blockable blockable) {
2169		if (blockable != null && blockable.getBlockedJid() != null) {
2170			final Jid jid = blockable.getBlockedJid();
2171			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid), new OnIqPacketReceived() {
2172
2173				@Override
2174				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2175					if (packet.getType() == IqPacket.TYPE_RESULT) {
2176						account.getBlocklist().add(jid);
2177						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
2178					}
2179				}
2180			});
2181		}
2182	}
2183
2184	public void sendUnblockRequest(final Blockable blockable) {
2185		if (blockable != null && blockable.getJid() != null) {
2186			final Jid jid = blockable.getBlockedJid();
2187			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
2188				@Override
2189				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2190					if (packet.getType() == IqPacket.TYPE_RESULT) {
2191						account.getBlocklist().remove(jid);
2192						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
2193					}
2194				}
2195			});
2196		}
2197	}
2198}