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.XmppConnection;
  88import eu.siacs.conversations.xmpp.forms.Data;
  89import eu.siacs.conversations.xmpp.forms.Field;
  90import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  91import eu.siacs.conversations.xmpp.jid.Jid;
  92import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  93import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  94import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  95import eu.siacs.conversations.xmpp.pep.Avatar;
  96import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  97import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  98import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  99
 100public class XmppConnectionService extends Service implements OnPhoneContactsLoadedListener {
 101
 102	public static final String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 103	private static final String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 104	public static final String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 105
 106	private ContentObserver contactObserver = new ContentObserver(null) {
 107		@Override
 108		public void onChange(boolean selfChange) {
 109			super.onChange(selfChange);
 110			Intent intent = new Intent(getApplicationContext(),
 111					XmppConnectionService.class);
 112			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 113			startService(intent);
 114		}
 115	};
 116	private final IBinder mBinder = new XmppConnectionBinder();
 117	public DatabaseBackend databaseBackend;
 118	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 119
 120		@Override
 121		public void onContactStatusChanged(Contact contact, boolean online) {
 122			Conversation conversation = find(getConversations(), contact);
 123			if (conversation != null) {
 124				if (online && contact.getPresences().size() > 1) {
 125					conversation.endOtrIfNeeded();
 126				} else {
 127					conversation.resetOtrSession();
 128				}
 129				if (online && (contact.getPresences().size() == 1)) {
 130					sendUnsentMessages(conversation);
 131				}
 132			}
 133		}
 134	};
 135	private FileBackend fileBackend = new FileBackend(this);
 136	private MemorizingTrustManager mMemorizingTrustManager;
 137	private NotificationService mNotificationService = new NotificationService(
 138			this);
 139	private OnMessagePacketReceived mMessageParser = new MessageParser(this);
 140	private OnPresencePacketReceived mPresenceParser = new PresenceParser(this);
 141	private IqParser mIqParser = new IqParser(this);
 142	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 143	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 144	private List<Account> accounts;
 145	private final List<Conversation> conversations = new CopyOnWriteArrayList<>();
 146	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 147			this);
 148	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 149			this);
 150	private AvatarService mAvatarService = new AvatarService(this);
 151	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 152	private OnConversationUpdate mOnConversationUpdate = null;
 153	private Integer convChangedListenerCount = 0;
 154	private OnAccountUpdate mOnAccountUpdate = null;
 155	private OnStatusChanged statusListener = new OnStatusChanged() {
 156
 157		@Override
 158		public void onStatusChanged(Account account) {
 159			XmppConnection connection = account.getXmppConnection();
 160			if (mOnAccountUpdate != null) {
 161				mOnAccountUpdate.onAccountUpdate();
 162			}
 163			if (account.getStatus() == Account.State.ONLINE) {
 164				for (Conversation conversation : account.pendingConferenceLeaves) {
 165					leaveMuc(conversation);
 166				}
 167				for (Conversation conversation : account.pendingConferenceJoins) {
 168					joinMuc(conversation);
 169				}
 170				mMessageArchiveService.executePendingQueries(account);
 171				mJingleConnectionManager.cancelInTransmission();
 172				List<Conversation> conversations = getConversations();
 173				for (Conversation conversation : conversations) {
 174					if (conversation.getAccount() == account) {
 175						conversation.startOtrIfNeeded();
 176						sendUnsentMessages(conversation);
 177					}
 178				}
 179				if (connection != null && connection.getFeatures().csi()) {
 180					if (checkListeners()) {
 181						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 182								+ " sending csi//inactive");
 183						connection.sendInactive();
 184					} else {
 185						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 186								+ " sending csi//active");
 187						connection.sendActive();
 188					}
 189				}
 190				syncDirtyContacts(account);
 191				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 192			} else if (account.getStatus() == Account.State.OFFLINE) {
 193				resetSendingToWaiting(account);
 194				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 195					int timeToReconnect = mRandom.nextInt(50) + 10;
 196					scheduleWakeupCall(timeToReconnect, false);
 197				}
 198			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 199				databaseBackend.updateAccount(account);
 200				reconnectAccount(account, true);
 201			} else if ((account.getStatus() != Account.State.CONNECTING)
 202					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 203				if (connection != null) {
 204					int next = connection.getTimeToNextAttempt();
 205					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 206							+ ": error connecting account. try again in "
 207							+ next + "s for the "
 208							+ (connection.getAttempt() + 1) + " time");
 209					scheduleWakeupCall((int) (next * 1.2), false);
 210				}
 211					}
 212			getNotificationService().updateErrorNotification();
 213		}
 214	};
 215
 216	private int accountChangedListenerCount = 0;
 217	private OnRosterUpdate mOnRosterUpdate = null;
 218	private OnUpdateBlocklist mOnUpdateBlocklist = null;
 219	private int updateBlocklistListenerCount = 0;
 220	private int rosterChangedListenerCount = 0;
 221	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 222	private int mucRosterChangedListenerCount = 0;
 223	private SecureRandom mRandom;
 224	private final FileObserver fileObserver = new FileObserver(
 225			FileBackend.getConversationsImageDirectory()) {
 226
 227		@Override
 228		public void onEvent(int event, String path) {
 229			if (event == FileObserver.DELETE) {
 230				markFileDeleted(path.split("\\.")[0]);
 231			}
 232		}
 233	};
 234	private final OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 235
 236		@Override
 237		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 238			mJingleConnectionManager.deliverPacket(account, packet);
 239		}
 240	};
 241
 242	private OpenPgpServiceConnection pgpServiceConnection;
 243	private PgpEngine mPgpEngine = null;
 244	private Intent pingIntent;
 245	private PendingIntent pendingPingIntent = null;
 246	private WakeLock wakeLock;
 247	private PowerManager pm;
 248	private final OnBindListener mOnBindListener = new OnBindListener() {
 249
 250		@Override
 251		public void onBind(final Account account) {
 252			account.getRoster().clearPresences();
 253			account.pendingConferenceJoins.clear();
 254			account.pendingConferenceLeaves.clear();
 255			fetchRosterFromServer(account);
 256			fetchBookmarks(account);
 257			sendPresencePacket(account,mPresenceGenerator.sendPresence(account));
 258			connectMultiModeConversations(account);
 259			updateConversationUi();
 260		}
 261	};
 262
 263	private final OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 264
 265		@Override
 266		public void onMessageAcknowledged(Account account, String uuid) {
 267			for (final Conversation conversation : getConversations()) {
 268				if (conversation.getAccount() == account) {
 269					Message message = conversation.findUnsentMessageWithUuid(uuid);
 270					if (message != null) {
 271						markMessage(message, Message.STATUS_SEND);
 272						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 273							databaseBackend.updateConversation(conversation);
 274						}
 275					}
 276				}
 277			}
 278		}
 279	};
 280	private LruCache<String, Bitmap> mBitmapCache;
 281	private final IqGenerator mIqGenerator = new IqGenerator(this);
 282	private Thread mPhoneContactMergerThread;
 283
 284	public PgpEngine getPgpEngine() {
 285		if (pgpServiceConnection.isBound()) {
 286			if (this.mPgpEngine == null) {
 287				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 288							getApplicationContext(),
 289							pgpServiceConnection.getService()), this);
 290			}
 291			return mPgpEngine;
 292		} else {
 293			return null;
 294		}
 295
 296	}
 297
 298	public FileBackend getFileBackend() {
 299		return this.fileBackend;
 300	}
 301
 302	public AvatarService getAvatarService() {
 303		return this.mAvatarService;
 304	}
 305
 306	public void attachFileToConversation(final Conversation conversation,
 307			final Uri uri,
 308			final UiCallback<Message> callback) {
 309		final Message message;
 310		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 311			message = new Message(conversation, "",
 312					Message.ENCRYPTION_DECRYPTED);
 313		} else {
 314			message = new Message(conversation, "",
 315					conversation.getNextEncryption(forceEncryption()));
 316		}
 317		message.setCounterpart(conversation.getNextCounterpart());
 318		message.setType(Message.TYPE_FILE);
 319		message.setStatus(Message.STATUS_OFFERED);
 320		String path = getFileBackend().getOriginalPath(uri);
 321		if (path!=null) {
 322			message.setRelativeFilePath(path);
 323			getFileBackend().updateFileParams(message);
 324			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 325				getPgpEngine().encrypt(message, callback);
 326			} else {
 327				callback.success(message);
 328			}
 329		} else {
 330			new Thread(new Runnable() {
 331				@Override
 332				public void run() {
 333					try {
 334						getFileBackend().copyFileToPrivateStorage(message, uri);
 335						getFileBackend().updateFileParams(message);
 336						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 337							getPgpEngine().encrypt(message, callback);
 338						} else {
 339							callback.success(message);
 340						}
 341					} catch (FileBackend.FileCopyException e) {
 342						callback.error(e.getResId(),message);
 343					}
 344				}
 345			}).start();
 346
 347		}
 348	}
 349
 350	public void attachImageToConversation(final Conversation conversation,
 351			final Uri uri, final UiCallback<Message> callback) {
 352		final Message message;
 353		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 354			message = new Message(conversation, "",
 355					Message.ENCRYPTION_DECRYPTED);
 356		} else {
 357			message = new Message(conversation, "",
 358					conversation.getNextEncryption(forceEncryption()));
 359		}
 360		message.setCounterpart(conversation.getNextCounterpart());
 361		message.setType(Message.TYPE_IMAGE);
 362		message.setStatus(Message.STATUS_OFFERED);
 363		new Thread(new Runnable() {
 364
 365			@Override
 366			public void run() {
 367				try {
 368					getFileBackend().copyImageToPrivateStorage(message, uri);
 369					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 370						getPgpEngine().encrypt(message, callback);
 371					} else {
 372						callback.success(message);
 373					}
 374				} catch (final FileBackend.FileCopyException e) {
 375					callback.error(e.getResId(), message);
 376				}
 377			}
 378		}).start();
 379	}
 380
 381	public Conversation find(Bookmark bookmark) {
 382		return find(bookmark.getAccount(), bookmark.getJid());
 383	}
 384
 385	public Conversation find(final Account account, final Jid jid) {
 386		return find(getConversations(), account, jid);
 387	}
 388
 389	@Override
 390	public int onStartCommand(Intent intent, int flags, int startId) {
 391		if (intent != null && intent.getAction() != null) {
 392			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 393				PhoneHelper.loadPhoneContacts(getApplicationContext(), new ArrayList<Bundle>(), this);
 394				return START_STICKY;
 395			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 396				logoutAndSave();
 397				return START_NOT_STICKY;
 398			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 399				mNotificationService.clear();
 400			} else if (intent.getAction().equals(ACTION_DISABLE_FOREGROUND)) {
 401				getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 402				toggleForegroundService();
 403			}
 404		}
 405		this.wakeLock.acquire();
 406
 407		for (Account account : accounts) {
 408			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 409				if (!hasInternetConnection()) {
 410					account.setStatus(Account.State.NO_INTERNET);
 411					if (statusListener != null) {
 412						statusListener.onStatusChanged(account);
 413					}
 414				} else {
 415					if (account.getStatus() == Account.State.NO_INTERNET) {
 416						account.setStatus(Account.State.OFFLINE);
 417						if (statusListener != null) {
 418							statusListener.onStatusChanged(account);
 419						}
 420					}
 421					if (account.getStatus() == Account.State.ONLINE) {
 422						long lastReceived = account.getXmppConnection()
 423							.getLastPacketReceived();
 424						long lastSent = account.getXmppConnection()
 425							.getLastPingSent();
 426						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 427							Log.d(Config.LOGTAG, account.getJid()
 428									+ ": ping timeout");
 429							this.reconnectAccount(account, true);
 430						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 431							account.getXmppConnection().sendPing();
 432							this.scheduleWakeupCall(2, false);
 433						}
 434					} else if (account.getStatus() == Account.State.OFFLINE) {
 435						if (account.getXmppConnection() == null) {
 436							account.setXmppConnection(this
 437									.createConnection(account));
 438						}
 439						new Thread(account.getXmppConnection()).start();
 440					} else if ((account.getStatus() == Account.State.CONNECTING)
 441							&& ((SystemClock.elapsedRealtime() - account
 442									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 443						Log.d(Config.LOGTAG, account.getJid()
 444								+ ": time out during connect reconnecting");
 445						reconnectAccount(account, true);
 446					} else {
 447						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 448							reconnectAccount(account, true);
 449						}
 450					}
 451					// in any case. reschedule wakup call
 452					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 453				}
 454				if (mOnAccountUpdate != null) {
 455					mOnAccountUpdate.onAccountUpdate();
 456				}
 457			}
 458		}
 459		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 460			if (!pm.isScreenOn()) {
 461			removeStaleListeners();
 462			}*/
 463		if (wakeLock.isHeld()) {
 464			try {
 465				wakeLock.release();
 466			} catch (final RuntimeException ignored) {
 467			}
 468		}
 469		return START_STICKY;
 470	}
 471
 472	public boolean hasInternetConnection() {
 473		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 474			.getSystemService(Context.CONNECTIVITY_SERVICE);
 475		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 476		return activeNetwork != null && activeNetwork.isConnected();
 477	}
 478
 479	@SuppressLint("TrulyRandom")
 480	@Override
 481	public void onCreate() {
 482		ExceptionHelper.init(getApplicationContext());
 483		PRNGFixes.apply();
 484		this.mRandom = new SecureRandom();
 485		this.mMemorizingTrustManager = new MemorizingTrustManager(
 486				getApplicationContext());
 487
 488		final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 489		final int cacheSize = maxMemory / 8;
 490		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 491			@Override
 492			protected int sizeOf(final String key, final Bitmap bitmap) {
 493				return bitmap.getByteCount() / 1024;
 494			}
 495		};
 496
 497		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 498		this.accounts = databaseBackend.getAccounts();
 499
 500		for (final Account account : this.accounts) {
 501			account.initOtrEngine(this);
 502			this.databaseBackend.readRoster(account.getRoster());
 503		}
 504		initConversations();
 505		PhoneHelper.loadPhoneContacts(getApplicationContext(),new ArrayList<Bundle>(), this);
 506
 507		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 508		this.fileObserver.startWatching();
 509		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 510		this.pgpServiceConnection.bindToService();
 511
 512		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 513		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 514		toggleForegroundService();
 515	}
 516
 517	public void toggleForegroundService() {
 518		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 519			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 520		} else {
 521			stopForeground(true);
 522		}
 523	}
 524
 525	@Override
 526	public void onTaskRemoved(final Intent rootIntent) {
 527		super.onTaskRemoved(rootIntent);
 528		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 529			this.logoutAndSave();
 530		}
 531	}
 532
 533	private void logoutAndSave() {
 534		for (final Account account : accounts) {
 535			databaseBackend.writeRoster(account.getRoster());
 536			if (account.getXmppConnection() != null) {
 537				disconnect(account, false);
 538			}
 539		}
 540		Context context = getApplicationContext();
 541		AlarmManager alarmManager = (AlarmManager) context
 542			.getSystemService(Context.ALARM_SERVICE);
 543		Intent intent = new Intent(context, EventReceiver.class);
 544		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 545		Log.d(Config.LOGTAG, "good bye");
 546		stopSelf();
 547	}
 548
 549	protected void scheduleWakeupCall(int seconds, boolean ping) {
 550		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 551		Context context = getApplicationContext();
 552		AlarmManager alarmManager = (AlarmManager) context
 553			.getSystemService(Context.ALARM_SERVICE);
 554
 555		if (ping) {
 556			if (this.pingIntent == null) {
 557				this.pingIntent = new Intent(context, EventReceiver.class);
 558				this.pingIntent.setAction("ping");
 559				this.pingIntent.putExtra("time", timeToWake);
 560				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 561						this.pingIntent, 0);
 562				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 563						timeToWake, pendingPingIntent);
 564			} else {
 565				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 566				if (scheduledTime < SystemClock.elapsedRealtime()
 567						|| (scheduledTime > timeToWake)) {
 568					this.pingIntent.putExtra("time", timeToWake);
 569					alarmManager.cancel(this.pendingPingIntent);
 570					this.pendingPingIntent = PendingIntent.getBroadcast(
 571							context, 0, this.pingIntent, 0);
 572					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 573							timeToWake, pendingPingIntent);
 574						}
 575			}
 576		} else {
 577			Intent intent = new Intent(context, EventReceiver.class);
 578			intent.setAction("ping_check");
 579			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 580					intent, 0);
 581			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 582					alarmIntent);
 583		}
 584
 585	}
 586
 587	public XmppConnection createConnection(final Account account) {
 588		final SharedPreferences sharedPref = getPreferences();
 589		account.setResource(sharedPref.getString("resource", "mobile")
 590				.toLowerCase(Locale.getDefault()));
 591		final XmppConnection connection = new XmppConnection(account, this);
 592		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 593		connection.setOnStatusChangedListener(this.statusListener);
 594		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 595		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 596		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 597		connection.setOnBindListener(this.mOnBindListener);
 598		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 599		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 600		return connection;
 601	}
 602
 603	public void sendMessage(final Message message) {
 604		final Account account = message.getConversation().getAccount();
 605		account.deactivateGracePeriod();
 606		final Conversation conv = message.getConversation();
 607		MessagePacket packet = null;
 608		boolean saveInDb = true;
 609		boolean send = false;
 610		if (account.getStatus() == Account.State.ONLINE
 611				&& account.getXmppConnection() != null) {
 612			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 613				if (message.getCounterpart() != null) {
 614					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 615						if (!conv.hasValidOtrSession()) {
 616							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 617							message.setStatus(Message.STATUS_WAITING);
 618						} else if (conv.hasValidOtrSession()
 619								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 620							mJingleConnectionManager
 621								.createNewConnection(message);
 622								}
 623					} else {
 624						mJingleConnectionManager.createNewConnection(message);
 625					}
 626				} else {
 627					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 628						conv.startOtrIfNeeded();
 629					}
 630					message.setStatus(Message.STATUS_WAITING);
 631				}
 632			} else {
 633				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 634					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 635						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 636						message.setStatus(Message.STATUS_WAITING);
 637					} else if (conv.hasValidOtrSession()) {
 638						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 639							packet = mMessageGenerator.generateOtrChat(message);
 640							send = true;
 641						} else {
 642							message.setStatus(Message.STATUS_WAITING);
 643							conv.startOtrIfNeeded();
 644						}
 645					} else {
 646						message.setStatus(Message.STATUS_WAITING);
 647					}
 648				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 649					message.getConversation().endOtrIfNeeded();
 650					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 651						@Override
 652						public void onMessageFound(Message message) {
 653							markMessage(message,Message.STATUS_SEND_FAILED);
 654						}
 655					});
 656					packet = mMessageGenerator.generatePgpChat(message);
 657					send = true;
 658				} else {
 659					message.getConversation().endOtrIfNeeded();
 660					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 661						@Override
 662						public void onMessageFound(Message message) {
 663							markMessage(message,Message.STATUS_SEND_FAILED);
 664						}
 665					});
 666					packet = mMessageGenerator.generateChat(message);
 667					send = true;
 668				}
 669			}
 670			if (!account.getXmppConnection().getFeatures().sm()
 671					&& conv.getMode() != Conversation.MODE_MULTI) {
 672				message.setStatus(Message.STATUS_SEND);
 673					}
 674		} else {
 675			message.setStatus(Message.STATUS_WAITING);
 676			if (message.getType() == Message.TYPE_TEXT) {
 677				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 678					String pgpBody = message.getEncryptedBody();
 679					String decryptedBody = message.getBody();
 680					message.setBody(pgpBody);
 681					message.setEncryption(Message.ENCRYPTION_PGP);
 682					databaseBackend.createMessage(message);
 683					saveInDb = false;
 684					message.setBody(decryptedBody);
 685					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 686				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 687					if (!conv.hasValidOtrSession()
 688							&& message.getCounterpart() != null) {
 689						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 690							}
 691				}
 692			}
 693
 694		}
 695		conv.add(message);
 696		if (saveInDb) {
 697			if (message.getEncryption() == Message.ENCRYPTION_NONE
 698					|| saveEncryptedMessages()) {
 699				databaseBackend.createMessage(message);
 700					}
 701		}
 702		if ((send) && (packet != null)) {
 703			sendMessagePacket(account, packet);
 704		}
 705		updateConversationUi();
 706	}
 707
 708	private void sendUnsentMessages(final Conversation conversation) {
 709		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 710
 711			@Override
 712			public void onMessageFound(Message message) {
 713				resendMessage(message);
 714			}
 715		});
 716	}
 717
 718	private void resendMessage(final Message message) {
 719		Account account = message.getConversation().getAccount();
 720		MessagePacket packet = null;
 721		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 722			Presences presences = message.getConversation().getContact()
 723				.getPresences();
 724			if (!message.getConversation().hasValidOtrSession()) {
 725				if ((message.getCounterpart() != null)
 726						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 727					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 728				} else {
 729					if (presences.size() == 1) {
 730						String presence = presences.asStringArray()[0];
 731						message.getConversation().startOtrSession(presence, true);
 732					}
 733				}
 734			} else {
 735				if (message.getConversation().getOtrSession()
 736						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 737					try {
 738						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 739						if (message.getType() == Message.TYPE_TEXT) {
 740							packet = mMessageGenerator.generateOtrChat(message,
 741									true);
 742						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 743							mJingleConnectionManager.createNewConnection(message);
 744						}
 745					} catch (final InvalidJidException ignored) {
 746
 747					}
 748						}
 749			}
 750		} else if (message.getType() == Message.TYPE_TEXT) {
 751			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 752				packet = mMessageGenerator.generateChat(message, true);
 753			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 754					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 755				packet = mMessageGenerator.generatePgpChat(message, true);
 756					}
 757		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 758			Contact contact = message.getConversation().getContact();
 759			Presences presences = contact.getPresences();
 760			if ((message.getCounterpart() != null)
 761					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 762				markMessage(message, Message.STATUS_OFFERED);
 763				mJingleConnectionManager.createNewConnection(message);
 764			} else {
 765				if (presences.size() == 1) {
 766					String presence = presences.asStringArray()[0];
 767					try {
 768						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 769					} catch (InvalidJidException e) {
 770						return;
 771					}
 772					markMessage(message, Message.STATUS_OFFERED);
 773					mJingleConnectionManager.createNewConnection(message);
 774				}
 775			}
 776		}
 777		if (packet != null) {
 778			if (!account.getXmppConnection().getFeatures().sm()
 779					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 780				markMessage(message, Message.STATUS_SEND);
 781			} else {
 782				markMessage(message, Message.STATUS_UNSEND);
 783			}
 784			sendMessagePacket(account, packet);
 785		}
 786	}
 787
 788	public void fetchRosterFromServer(final Account account) {
 789		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 790		if (!"".equals(account.getRosterVersion())) {
 791			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 792					+ ": fetching roster version " + account.getRosterVersion());
 793		} else {
 794			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 795		}
 796		iqPacket.query(Xmlns.ROSTER).setAttribute("ver",
 797				account.getRosterVersion());
 798		account.getXmppConnection().sendIqPacket(iqPacket, mIqParser);
 799	}
 800
 801	public void fetchBookmarks(final Account account) {
 802		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 803		final Element query = iqPacket.query("jabber:iq:private");
 804		query.addChild("storage", "storage:bookmarks");
 805		final OnIqPacketReceived callback = new OnIqPacketReceived() {
 806
 807			@Override
 808			public void onIqPacketReceived(final Account account, final IqPacket packet) {
 809				final Element query = packet.query();
 810				final List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 811				final Element storage = query.findChild("storage",
 812						"storage:bookmarks");
 813				if (storage != null) {
 814					for (final Element item : storage.getChildren()) {
 815						if (item.getName().equals("conference")) {
 816							final Bookmark bookmark = Bookmark.parse(item, account);
 817							bookmarks.add(bookmark);
 818							Conversation conversation = find(bookmark);
 819							if (conversation != null) {
 820								conversation.setBookmark(bookmark);
 821							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 822								conversation = findOrCreateConversation(
 823										account, bookmark.getJid(), true);
 824								conversation.setBookmark(bookmark);
 825								joinMuc(conversation);
 826							}
 827						}
 828					}
 829				}
 830				account.setBookmarks(bookmarks);
 831			}
 832		};
 833		sendIqPacket(account, iqPacket, callback);
 834	}
 835
 836	public void pushBookmarks(Account account) {
 837		IqPacket iqPacket = new IqPacket(IqPacket.TYPE.SET);
 838		Element query = iqPacket.query("jabber:iq:private");
 839		Element storage = query.addChild("storage", "storage:bookmarks");
 840		for (Bookmark bookmark : account.getBookmarks()) {
 841			storage.addChild(bookmark);
 842		}
 843		sendIqPacket(account, iqPacket, null);
 844	}
 845
 846	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 847		if (mPhoneContactMergerThread != null) {
 848			mPhoneContactMergerThread.interrupt();
 849		}
 850		mPhoneContactMergerThread = new Thread(new Runnable() {
 851			@Override
 852			public void run() {
 853				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 854				for (Account account : accounts) {
 855					account.getRoster().clearSystemAccounts();
 856					for (Bundle phoneContact : phoneContacts) {
 857						if (Thread.interrupted()) {
 858							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 859							return;
 860						}
 861						Jid jid;
 862						try {
 863							jid = Jid.fromString(phoneContact.getString("jid"));
 864						} catch (final InvalidJidException e) {
 865							continue;
 866						}
 867						final Contact contact = account.getRoster().getContact(jid);
 868						String systemAccount = phoneContact.getInt("phoneid")
 869							+ "#"
 870							+ phoneContact.getString("lookup");
 871						contact.setSystemAccount(systemAccount);
 872						contact.setPhotoUri(phoneContact.getString("photouri"));
 873						getAvatarService().clear(contact);
 874						contact.setSystemName(phoneContact.getString("displayname"));
 875					}
 876				}
 877				Log.d(Config.LOGTAG,"finished merging phone contacts");
 878				updateAccountUi();
 879			}
 880		});
 881		mPhoneContactMergerThread.start();
 882	}
 883
 884	private void initConversations() {
 885		synchronized (this.conversations) {
 886			final Map<String, Account> accountLookupTable = new Hashtable<>();
 887			for (Account account : this.accounts) {
 888				accountLookupTable.put(account.getUuid(), account);
 889			}
 890			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 891			for (Conversation conversation : this.conversations) {
 892				Account account = accountLookupTable.get(conversation.getAccountUuid());
 893				conversation.setAccount(account);
 894				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 895				checkDeletedFiles(conversation);
 896			}
 897		}
 898	}
 899
 900	public List<Conversation> getConversations() {
 901		return this.conversations;
 902	}
 903
 904	private void checkDeletedFiles(Conversation conversation) {
 905		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 906
 907			@Override
 908			public void onMessageFound(Message message) {
 909				if (!getFileBackend().isFileAvailable(message)) {
 910					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 911				}
 912			}
 913		});
 914	}
 915
 916	private void markFileDeleted(String uuid) {
 917		for (Conversation conversation : getConversations()) {
 918			Message message = conversation.findMessageWithFileAndUuid(uuid);
 919			if (message != null) {
 920				if (!getFileBackend().isFileAvailable(message)) {
 921					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 922					updateConversationUi();
 923				}
 924				return;
 925			}
 926		}
 927	}
 928
 929	public void populateWithOrderedConversations(final List<Conversation> list) {
 930		populateWithOrderedConversations(list, true);
 931	}
 932
 933	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 934		list.clear();
 935		if (includeConferences) {
 936			list.addAll(getConversations());
 937		} else {
 938			for (Conversation conversation : getConversations()) {
 939				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 940					list.add(conversation);
 941				}
 942			}
 943		}
 944		Collections.sort(list, new Comparator<Conversation>() {
 945			@Override
 946			public int compare(Conversation lhs, Conversation rhs) {
 947				Message left = lhs.getLatestMessage();
 948				Message right = rhs.getLatestMessage();
 949				if (left.getTimeSent() > right.getTimeSent()) {
 950					return -1;
 951				} else if (left.getTimeSent() < right.getTimeSent()) {
 952					return 1;
 953				} else {
 954					return 0;
 955				}
 956			}
 957		});
 958	}
 959
 960	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
 961		Log.d(Config.LOGTAG,"load more messages for "+conversation.getName() + " prior to "+MessageGenerator.getTimestamp(timestamp));
 962		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
 963			return;
 964		}
 965		new Thread(new Runnable() {
 966			@Override
 967			public void run() {
 968				final Account account = conversation.getAccount();
 969				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
 970				if (messages.size() > 0) {
 971					conversation.addAll(0, messages);
 972					callback.onMoreMessagesLoaded(messages.size(), conversation);
 973				} else if (conversation.hasMessagesLeftOnServer()
 974						&& account.isOnlineAndConnected()
 975						&& account.getXmppConnection().getFeatures().mam()) {
 976					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
 977					if (query != null) {
 978						query.setCallback(callback);
 979					}
 980					callback.informUser(R.string.fetching_history_from_server);
 981						}
 982			}
 983		}).start();
 984	}
 985
 986	public interface OnMoreMessagesLoaded {
 987		public void onMoreMessagesLoaded(int count,Conversation conversation);
 988		public void informUser(int r);
 989	}
 990
 991	public List<Account> getAccounts() {
 992		return this.accounts;
 993	}
 994
 995	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
 996		for (final Conversation conversation : haystack) {
 997			if (conversation.getContact() == contact) {
 998				return conversation;
 999			}
1000		}
1001		return null;
1002	}
1003
1004	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1005		if (jid == null ) {
1006			return null;
1007		}
1008		for (final Conversation conversation : haystack) {
1009			if ((account == null || conversation.getAccount() == account)
1010					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1011				return conversation;
1012					}
1013		}
1014		return null;
1015	}
1016
1017	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc) {
1018		return this.findOrCreateConversation(account,jid,muc,null);
1019	}
1020
1021	public Conversation findOrCreateConversation(final Account account, final Jid jid,final boolean muc, final MessageArchiveService.Query query) {
1022		synchronized (this.conversations) {
1023			Conversation conversation = find(account, jid);
1024			if (conversation != null) {
1025				return conversation;
1026			}
1027			conversation = databaseBackend.findConversation(account, jid);
1028			if (conversation != null) {
1029				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1030				conversation.setAccount(account);
1031				if (muc) {
1032					conversation.setMode(Conversation.MODE_MULTI);
1033				} else {
1034					conversation.setMode(Conversation.MODE_SINGLE);
1035				}
1036				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1037				this.databaseBackend.updateConversation(conversation);
1038			} else {
1039				String conversationName;
1040				Contact contact = account.getRoster().getContact(jid);
1041				if (contact != null) {
1042					conversationName = contact.getDisplayName();
1043				} else {
1044					conversationName = jid.getLocalpart();
1045				}
1046				if (muc) {
1047					conversation = new Conversation(conversationName, account, jid,
1048							Conversation.MODE_MULTI);
1049				} else {
1050					conversation = new Conversation(conversationName, account, jid,
1051							Conversation.MODE_SINGLE);
1052				}
1053				this.databaseBackend.createConversation(conversation);
1054			}
1055			if (account.getXmppConnection() != null && account.getXmppConnection().getFeatures().mam()) {
1056				if (query == null) {
1057					this.mMessageArchiveService.query(conversation);
1058				} else {
1059					if (query.getConversation() == null) {
1060						this.mMessageArchiveService.query(conversation, query.getStart());
1061					}
1062				}
1063			}
1064			this.conversations.add(conversation);
1065			updateConversationUi();
1066			return conversation;
1067		}
1068	}
1069
1070	public void archiveConversation(Conversation conversation) {
1071		synchronized (this.conversations) {
1072			if (conversation.getMode() == Conversation.MODE_MULTI) {
1073				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1074					Bookmark bookmark = conversation.getBookmark();
1075					if (bookmark != null && bookmark.autojoin()) {
1076						bookmark.setAutojoin(false);
1077						pushBookmarks(bookmark.getAccount());
1078					}
1079				}
1080				leaveMuc(conversation);
1081			} else {
1082				conversation.endOtrIfNeeded();
1083			}
1084			this.databaseBackend.updateConversation(conversation);
1085			this.conversations.remove(conversation);
1086			updateConversationUi();
1087		}
1088	}
1089
1090	public void createAccount(final Account account) {
1091		account.initOtrEngine(this);
1092		databaseBackend.createAccount(account);
1093		this.accounts.add(account);
1094		this.reconnectAccount(account, false);
1095		updateAccountUi();
1096	}
1097
1098	public void updateAccount(final Account account) {
1099		this.statusListener.onStatusChanged(account);
1100		databaseBackend.updateAccount(account);
1101		reconnectAccount(account, false);
1102		updateAccountUi();
1103		getNotificationService().updateErrorNotification();
1104	}
1105
1106	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
1107		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
1108		sendIqPacket(account, iq, new OnIqPacketReceived() {
1109			@Override
1110			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1111				if (packet.getType() == IqPacket.TYPE.RESULT) {
1112					account.setPassword(newPassword);
1113					databaseBackend.updateAccount(account);
1114					callback.onPasswordChangeSucceeded();
1115				} else {
1116					callback.onPasswordChangeFailed();
1117				}
1118			}
1119		});
1120	}
1121
1122	public interface OnAccountPasswordChanged {
1123		public void onPasswordChangeSucceeded();
1124		public void onPasswordChangeFailed();
1125	}
1126
1127	public void deleteAccount(final Account account) {
1128		synchronized (this.conversations) {
1129			for (final Conversation conversation : conversations) {
1130				if (conversation.getAccount() == account) {
1131					if (conversation.getMode() == Conversation.MODE_MULTI) {
1132						leaveMuc(conversation);
1133					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1134						conversation.endOtrIfNeeded();
1135					}
1136					conversations.remove(conversation);
1137				}
1138			}
1139			if (account.getXmppConnection() != null) {
1140				this.disconnect(account, true);
1141			}
1142			databaseBackend.deleteAccount(account);
1143			this.accounts.remove(account);
1144			updateAccountUi();
1145			getNotificationService().updateErrorNotification();
1146		}
1147	}
1148
1149	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1150		synchronized (this) {
1151			if (checkListeners()) {
1152				switchToForeground();
1153			}
1154			this.mOnConversationUpdate = listener;
1155			this.mNotificationService.setIsInForeground(true);
1156			if (this.convChangedListenerCount < 2) {
1157				this.convChangedListenerCount++;
1158			}
1159		}
1160	}
1161
1162	public void removeOnConversationListChangedListener() {
1163		synchronized (this) {
1164			this.convChangedListenerCount--;
1165			if (this.convChangedListenerCount <= 0) {
1166				this.convChangedListenerCount = 0;
1167				this.mOnConversationUpdate = null;
1168				this.mNotificationService.setIsInForeground(false);
1169				if (checkListeners()) {
1170					switchToBackground();
1171				}
1172			}
1173		}
1174	}
1175
1176	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1177		synchronized (this) {
1178			if (checkListeners()) {
1179				switchToForeground();
1180			}
1181			this.mOnAccountUpdate = listener;
1182			if (this.accountChangedListenerCount < 2) {
1183				this.accountChangedListenerCount++;
1184			}
1185		}
1186	}
1187
1188	public void removeOnAccountListChangedListener() {
1189		synchronized (this) {
1190			this.accountChangedListenerCount--;
1191			if (this.accountChangedListenerCount <= 0) {
1192				this.mOnAccountUpdate = null;
1193				this.accountChangedListenerCount = 0;
1194				if (checkListeners()) {
1195					switchToBackground();
1196				}
1197			}
1198		}
1199	}
1200
1201	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
1202		synchronized (this) {
1203			if (checkListeners()) {
1204				switchToForeground();
1205			}
1206			this.mOnRosterUpdate = listener;
1207			if (this.rosterChangedListenerCount < 2) {
1208				this.rosterChangedListenerCount++;
1209			}
1210		}
1211	}
1212
1213	public void removeOnRosterUpdateListener() {
1214		synchronized (this) {
1215			this.rosterChangedListenerCount--;
1216			if (this.rosterChangedListenerCount <= 0) {
1217				this.rosterChangedListenerCount = 0;
1218				this.mOnRosterUpdate = null;
1219				if (checkListeners()) {
1220					switchToBackground();
1221				}
1222			}
1223		}
1224	}
1225
1226	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
1227		synchronized (this) {
1228			if (checkListeners()) {
1229				switchToForeground();
1230			}
1231			this.mOnUpdateBlocklist = listener;
1232			if (this.updateBlocklistListenerCount < 2) {
1233				this.updateBlocklistListenerCount++;
1234			}
1235		}
1236	}
1237
1238	public void removeOnUpdateBlocklistListener() {
1239		synchronized (this) {
1240			this.updateBlocklistListenerCount--;
1241			if (this.updateBlocklistListenerCount <= 0) {
1242				this.updateBlocklistListenerCount = 0;
1243				this.mOnUpdateBlocklist = null;
1244				if (checkListeners()) {
1245					switchToBackground();
1246				}
1247			}
1248		}
1249	}
1250
1251	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1252		synchronized (this) {
1253			if (checkListeners()) {
1254				switchToForeground();
1255			}
1256			this.mOnMucRosterUpdate = listener;
1257			if (this.mucRosterChangedListenerCount < 2) {
1258				this.mucRosterChangedListenerCount++;
1259			}
1260		}
1261	}
1262
1263	public void removeOnMucRosterUpdateListener() {
1264		synchronized (this) {
1265			this.mucRosterChangedListenerCount--;
1266			if (this.mucRosterChangedListenerCount <= 0) {
1267				this.mucRosterChangedListenerCount = 0;
1268				this.mOnMucRosterUpdate = null;
1269				if (checkListeners()) {
1270					switchToBackground();
1271				}
1272			}
1273		}
1274	}
1275
1276	private boolean checkListeners() {
1277		return (this.mOnAccountUpdate == null
1278				&& this.mOnConversationUpdate == null
1279				&& this.mOnRosterUpdate == null
1280				&& this.mOnUpdateBlocklist == null);
1281	}
1282
1283	private void switchToForeground() {
1284		for (Account account : getAccounts()) {
1285			if (account.getStatus() == Account.State.ONLINE) {
1286				XmppConnection connection = account.getXmppConnection();
1287				if (connection != null && connection.getFeatures().csi()) {
1288					connection.sendActive();
1289				}
1290			}
1291		}
1292		Log.d(Config.LOGTAG, "app switched into foreground");
1293	}
1294
1295	private void switchToBackground() {
1296		for (Account account : getAccounts()) {
1297			if (account.getStatus() == Account.State.ONLINE) {
1298				XmppConnection connection = account.getXmppConnection();
1299				if (connection != null && connection.getFeatures().csi()) {
1300					connection.sendInactive();
1301				}
1302			}
1303		}
1304		this.mNotificationService.setIsInForeground(false);
1305		Log.d(Config.LOGTAG, "app switched into background");
1306	}
1307
1308	private void connectMultiModeConversations(Account account) {
1309		List<Conversation> conversations = getConversations();
1310		for (Conversation conversation : conversations) {
1311			if ((conversation.getMode() == Conversation.MODE_MULTI)
1312					&& (conversation.getAccount() == account)) {
1313				conversation.resetMucOptions();
1314				joinMuc(conversation);
1315					}
1316		}
1317	}
1318
1319	public void joinMuc(Conversation conversation) {
1320		Account account = conversation.getAccount();
1321		account.pendingConferenceJoins.remove(conversation);
1322		account.pendingConferenceLeaves.remove(conversation);
1323		if (account.getStatus() == Account.State.ONLINE) {
1324			final String nick = conversation.getMucOptions().getProposedNick();
1325			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1326			if (joinJid == null) {
1327				return; //safety net
1328			}
1329			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1330			PresencePacket packet = new PresencePacket();
1331			packet.setFrom(conversation.getAccount().getJid());
1332			packet.setTo(joinJid);
1333			Element x = packet.addChild("x","http://jabber.org/protocol/muc");
1334			if (conversation.getMucOptions().getPassword() != null) {
1335				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1336			}
1337			x.addChild("history").setAttribute("since",PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1338			String sig = account.getPgpSignature();
1339			if (sig != null) {
1340				packet.addChild("status").setContent("online");
1341				packet.addChild("x", "jabber:x:signed").setContent(sig);
1342			}
1343			sendPresencePacket(account, packet);
1344			if (!joinJid.equals(conversation.getJid())) {
1345				conversation.setContactJid(joinJid);
1346				databaseBackend.updateConversation(conversation);
1347			}
1348		} else {
1349			account.pendingConferenceJoins.add(conversation);
1350		}
1351	}
1352
1353	public void providePasswordForMuc(Conversation conversation, String password) {
1354		if (conversation.getMode() == Conversation.MODE_MULTI) {
1355			conversation.getMucOptions().setPassword(password);
1356			if (conversation.getBookmark() != null) {
1357				conversation.getBookmark().setAutojoin(true);
1358				pushBookmarks(conversation.getAccount());
1359			}
1360			databaseBackend.updateConversation(conversation);
1361			joinMuc(conversation);
1362		}
1363	}
1364
1365	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1366		final MucOptions options = conversation.getMucOptions();
1367		final Jid joinJid = options.createJoinJid(nick);
1368		if (options.online()) {
1369			Account account = conversation.getAccount();
1370			options.setOnRenameListener(new OnRenameListener() {
1371
1372				@Override
1373				public void onSuccess() {
1374					conversation.setContactJid(joinJid);
1375					databaseBackend.updateConversation(conversation);
1376					Bookmark bookmark = conversation.getBookmark();
1377					if (bookmark != null) {
1378						bookmark.setNick(nick);
1379						pushBookmarks(bookmark.getAccount());
1380					}
1381					callback.success(conversation);
1382				}
1383
1384				@Override
1385				public void onFailure() {
1386					callback.error(R.string.nick_in_use, conversation);
1387				}
1388			});
1389
1390			PresencePacket packet = new PresencePacket();
1391			packet.setTo(joinJid);
1392			packet.setFrom(conversation.getAccount().getJid());
1393
1394			String sig = account.getPgpSignature();
1395			if (sig != null) {
1396				packet.addChild("status").setContent("online");
1397				packet.addChild("x", "jabber:x:signed").setContent(sig);
1398			}
1399			sendPresencePacket(account, packet);
1400		} else {
1401			conversation.setContactJid(joinJid);
1402			databaseBackend.updateConversation(conversation);
1403			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1404				Bookmark bookmark = conversation.getBookmark();
1405				if (bookmark != null) {
1406					bookmark.setNick(nick);
1407					pushBookmarks(bookmark.getAccount());
1408				}
1409				joinMuc(conversation);
1410			}
1411		}
1412	}
1413
1414	public void leaveMuc(Conversation conversation) {
1415		Account account = conversation.getAccount();
1416		account.pendingConferenceJoins.remove(conversation);
1417		account.pendingConferenceLeaves.remove(conversation);
1418		if (account.getStatus() == Account.State.ONLINE) {
1419			PresencePacket packet = new PresencePacket();
1420			packet.setTo(conversation.getJid());
1421			packet.setFrom(conversation.getAccount().getJid());
1422			packet.setAttribute("type", "unavailable");
1423			sendPresencePacket(conversation.getAccount(), packet);
1424			conversation.getMucOptions().setOffline();
1425			conversation.deregisterWithBookmark();
1426			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1427					+ ": leaving muc " + conversation.getJid());
1428		} else {
1429			account.pendingConferenceLeaves.add(conversation);
1430		}
1431	}
1432
1433	private String findConferenceServer(final Account account) {
1434		String server;
1435		if (account.getXmppConnection() != null) {
1436			server = account.getXmppConnection().getMucServer();
1437			if (server != null) {
1438				return server;
1439			}
1440		}
1441		for(Account other : getAccounts()) {
1442			if (other != account && other.getXmppConnection() != null) {
1443				server = other.getXmppConnection().getMucServer();
1444				if (server != null) {
1445					return server;
1446				}
1447			}
1448		}
1449		return null;
1450	}
1451
1452	public void createAdhocConference(final Account account, final Iterable<Jid> jids, final UiCallback<Conversation> callback) {
1453		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
1454		if (account.getStatus() == Account.State.ONLINE) {
1455			try {
1456				String server = findConferenceServer(account);
1457				if (server == null) {
1458					if (callback != null) {
1459						callback.error(R.string.no_conference_server_found,null);
1460					}
1461					return;
1462				}
1463				String name = new BigInteger(75,getRNG()).toString(32);
1464				Jid jid = Jid.fromParts(name,server,null);
1465				final Conversation conversation = findOrCreateConversation(account, jid, true);
1466				joinMuc(conversation);
1467				Bundle options = new Bundle();
1468				options.putString("muc#roomconfig_persistentroom", "1");
1469				options.putString("muc#roomconfig_membersonly", "1");
1470				options.putString("muc#roomconfig_publicroom", "0");
1471				options.putString("muc#roomconfig_whois", "anyone");
1472				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1473					@Override
1474					public void onPushSucceeded() {
1475						for(Jid invite : jids) {
1476							invite(conversation,invite);
1477						}
1478						if (callback != null) {
1479							callback.success(conversation);
1480						}
1481					}
1482
1483					@Override
1484					public void onPushFailed() {
1485						if (callback != null) {
1486							callback.error(R.string.conference_creation_failed, conversation);
1487						}
1488					}
1489				});
1490
1491			} catch (InvalidJidException e) {
1492				if (callback != null) {
1493					callback.error(R.string.conference_creation_failed, null);
1494				}
1495			}
1496		} else {
1497			if (callback != null) {
1498				callback.error(R.string.not_connected_try_again,null);
1499			}
1500		}
1501	}
1502
1503	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1504		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1505		request.setTo(conversation.getJid().toBareJid());
1506		request.query("http://jabber.org/protocol/muc#owner");
1507		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1508			@Override
1509			public void onIqPacketReceived(Account account, IqPacket packet) {
1510				if (packet.getType() != IqPacket.TYPE.ERROR) {
1511					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1512					for (Field field : data.getFields()) {
1513						if (options.containsKey(field.getName())) {
1514							field.setValue(options.getString(field.getName()));
1515						}
1516					}
1517					data.submit();
1518					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
1519					set.setTo(conversation.getJid().toBareJid());
1520					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1521					sendIqPacket(account, set, new OnIqPacketReceived() {
1522						@Override
1523						public void onIqPacketReceived(Account account, IqPacket packet) {
1524							if (packet.getType() == IqPacket.TYPE.RESULT) {
1525								if (callback != null) {
1526									callback.onPushSucceeded();
1527								}
1528							} else {
1529								if (callback != null) {
1530									callback.onPushFailed();
1531								}
1532							}
1533						}
1534					});
1535				} else {
1536					if (callback != null) {
1537						callback.onPushFailed();
1538					}
1539				}
1540			}
1541		});
1542	}
1543
1544	public void disconnect(Account account, boolean force) {
1545		if ((account.getStatus() == Account.State.ONLINE)
1546				|| (account.getStatus() == Account.State.DISABLED)) {
1547			if (!force) {
1548				List<Conversation> conversations = getConversations();
1549				for (Conversation conversation : conversations) {
1550					if (conversation.getAccount() == account) {
1551						if (conversation.getMode() == Conversation.MODE_MULTI) {
1552							leaveMuc(conversation);
1553						} else {
1554							if (conversation.endOtrIfNeeded()) {
1555								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1556										+ ": ended otr session with "
1557										+ conversation.getJid());
1558							}
1559						}
1560					}
1561				}
1562			}
1563			account.getXmppConnection().disconnect(force);
1564				}
1565	}
1566
1567	@Override
1568	public IBinder onBind(Intent intent) {
1569		return mBinder;
1570	}
1571
1572	public void updateMessage(Message message) {
1573		databaseBackend.updateMessage(message);
1574		updateConversationUi();
1575	}
1576
1577	protected void syncDirtyContacts(Account account) {
1578		for (Contact contact : account.getRoster().getContacts()) {
1579			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1580				pushContactToServer(contact);
1581			}
1582			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1583				deleteContactOnServer(contact);
1584			}
1585		}
1586	}
1587
1588	public void createContact(Contact contact) {
1589		SharedPreferences sharedPref = getPreferences();
1590		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1591		if (autoGrant) {
1592			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1593			contact.setOption(Contact.Options.ASKING);
1594		}
1595		pushContactToServer(contact);
1596	}
1597
1598	public void onOtrSessionEstablished(Conversation conversation) {
1599		final Account account = conversation.getAccount();
1600		final Session otrSession = conversation.getOtrSession();
1601		Log.d(Config.LOGTAG,
1602				account.getJid().toBareJid() + " otr session established with "
1603				+ conversation.getJid() + "/"
1604				+ otrSession.getSessionID().getUserID());
1605		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1606
1607			@Override
1608			public void onMessageFound(Message message) {
1609				SessionID id = otrSession.getSessionID();
1610				try {
1611					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1612				} catch (InvalidJidException e) {
1613					return;
1614				}
1615				if (message.getType() == Message.TYPE_TEXT) {
1616					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1617					if (outPacket != null) {
1618						message.setStatus(Message.STATUS_SEND);
1619						databaseBackend.updateMessage(message);
1620						sendMessagePacket(account, outPacket);
1621					}
1622				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1623					mJingleConnectionManager.createNewConnection(message);
1624				}
1625				updateConversationUi();
1626			}
1627		});
1628	}
1629
1630	public boolean renewSymmetricKey(Conversation conversation) {
1631		Account account = conversation.getAccount();
1632		byte[] symmetricKey = new byte[32];
1633		this.mRandom.nextBytes(symmetricKey);
1634		Session otrSession = conversation.getOtrSession();
1635		if (otrSession != null) {
1636			MessagePacket packet = new MessagePacket();
1637			packet.setType(MessagePacket.TYPE_CHAT);
1638			packet.setFrom(account.getJid());
1639			packet.addChild("private", "urn:xmpp:carbons:2");
1640			packet.addChild("no-copy", "urn:xmpp:hints");
1641			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1642					+ otrSession.getSessionID().getUserID());
1643			try {
1644				packet.setBody(otrSession
1645						.transformSending(CryptoHelper.FILETRANSFER
1646							+ CryptoHelper.bytesToHex(symmetricKey)));
1647				sendMessagePacket(account, packet);
1648				conversation.setSymmetricKey(symmetricKey);
1649				return true;
1650			} catch (OtrException e) {
1651				return false;
1652			}
1653		}
1654		return false;
1655	}
1656
1657	public void pushContactToServer(final Contact contact) {
1658		contact.resetOption(Contact.Options.DIRTY_DELETE);
1659		contact.setOption(Contact.Options.DIRTY_PUSH);
1660		final Account account = contact.getAccount();
1661		if (account.getStatus() == Account.State.ONLINE) {
1662			final boolean ask = contact.getOption(Contact.Options.ASKING);
1663			final boolean sendUpdates = contact
1664				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1665				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1666			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1667			iq.query(Xmlns.ROSTER).addChild(contact.asElement());
1668			account.getXmppConnection().sendIqPacket(iq, null);
1669			if (sendUpdates) {
1670				sendPresencePacket(account,
1671						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1672			}
1673			if (ask) {
1674				sendPresencePacket(account,
1675						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1676			}
1677		}
1678	}
1679
1680	public void publishAvatar(final Account account,
1681			final Uri image,
1682			final UiCallback<Avatar> callback) {
1683		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1684		final int size = Config.AVATAR_SIZE;
1685		final Avatar avatar = getFileBackend()
1686			.getPepAvatar(image, size, format);
1687		if (avatar != null) {
1688			avatar.height = size;
1689			avatar.width = size;
1690			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1691				avatar.type = "image/webp";
1692			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1693				avatar.type = "image/jpeg";
1694			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1695				avatar.type = "image/png";
1696			}
1697			if (!getFileBackend().save(avatar)) {
1698				callback.error(R.string.error_saving_avatar, avatar);
1699				return;
1700			}
1701			final IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1702			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1703
1704				@Override
1705				public void onIqPacketReceived(Account account, IqPacket result) {
1706					if (result.getType() == IqPacket.TYPE.RESULT) {
1707						final IqPacket packet = XmppConnectionService.this.mIqGenerator
1708							.publishAvatarMetadata(avatar);
1709						sendIqPacket(account, packet, new OnIqPacketReceived() {
1710
1711							@Override
1712							public void onIqPacketReceived(Account account,
1713									IqPacket result) {
1714								if (result.getType() == IqPacket.TYPE.RESULT) {
1715									if (account.setAvatar(avatar.getFilename())) {
1716										databaseBackend.updateAccount(account);
1717									}
1718									callback.success(avatar);
1719								} else {
1720									callback.error(
1721											R.string.error_publish_avatar_server_reject,
1722											avatar);
1723								}
1724							}
1725						});
1726					} else {
1727						callback.error(
1728								R.string.error_publish_avatar_server_reject,
1729								avatar);
1730					}
1731				}
1732			});
1733		} else {
1734			callback.error(R.string.error_publish_avatar_converting, null);
1735		}
1736	}
1737
1738	public void fetchAvatar(Account account, Avatar avatar) {
1739		fetchAvatar(account, avatar, null);
1740	}
1741
1742	public void fetchAvatar(Account account, final Avatar avatar,
1743			final UiCallback<Avatar> callback) {
1744		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1745		sendIqPacket(account, packet, new OnIqPacketReceived() {
1746
1747			@Override
1748			public void onIqPacketReceived(Account account, IqPacket result) {
1749				final String ERROR = account.getJid().toBareJid()
1750					+ ": fetching avatar for " + avatar.owner + " failed ";
1751				if (result.getType() == IqPacket.TYPE.RESULT) {
1752					avatar.image = mIqParser.avatarData(result);
1753					if (avatar.image != null) {
1754						if (getFileBackend().save(avatar)) {
1755							if (account.getJid().toBareJid().equals(avatar.owner)) {
1756								if (account.setAvatar(avatar.getFilename())) {
1757									databaseBackend.updateAccount(account);
1758								}
1759								getAvatarService().clear(account);
1760								updateConversationUi();
1761								updateAccountUi();
1762							} else {
1763								Contact contact = account.getRoster()
1764									.getContact(avatar.owner);
1765								contact.setAvatar(avatar.getFilename());
1766								getAvatarService().clear(contact);
1767								updateConversationUi();
1768								updateRosterUi();
1769							}
1770							if (callback != null) {
1771								callback.success(avatar);
1772							}
1773							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1774									+ ": succesfully fetched avatar for "
1775									+ avatar.owner);
1776							return;
1777						}
1778					} else {
1779
1780						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1781					}
1782				} else {
1783					Element error = result.findChild("error");
1784					if (error == null) {
1785						Log.d(Config.LOGTAG, ERROR + "(server error)");
1786					} else {
1787						Log.d(Config.LOGTAG, ERROR + error.toString());
1788					}
1789				}
1790				if (callback != null) {
1791					callback.error(0, null);
1792				}
1793
1794			}
1795		});
1796	}
1797
1798	public void checkForAvatar(Account account,
1799			final UiCallback<Avatar> callback) {
1800		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1801		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1802
1803			@Override
1804			public void onIqPacketReceived(Account account, IqPacket packet) {
1805				if (packet.getType() == IqPacket.TYPE.RESULT) {
1806					Element pubsub = packet.findChild("pubsub",
1807							"http://jabber.org/protocol/pubsub");
1808					if (pubsub != null) {
1809						Element items = pubsub.findChild("items");
1810						if (items != null) {
1811							Avatar avatar = Avatar.parseMetadata(items);
1812							if (avatar != null) {
1813								avatar.owner = account.getJid().toBareJid();
1814								if (fileBackend.isAvatarCached(avatar)) {
1815									if (account.setAvatar(avatar.getFilename())) {
1816										databaseBackend.updateAccount(account);
1817									}
1818									getAvatarService().clear(account);
1819									callback.success(avatar);
1820								} else {
1821									fetchAvatar(account, avatar, callback);
1822								}
1823								return;
1824							}
1825						}
1826					}
1827				}
1828				callback.error(0, null);
1829			}
1830		});
1831	}
1832
1833	public void deleteContactOnServer(Contact contact) {
1834		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1835		contact.resetOption(Contact.Options.DIRTY_PUSH);
1836		contact.setOption(Contact.Options.DIRTY_DELETE);
1837		Account account = contact.getAccount();
1838		if (account.getStatus() == Account.State.ONLINE) {
1839			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1840			Element item = iq.query(Xmlns.ROSTER).addChild("item");
1841			item.setAttribute("jid", contact.getJid().toString());
1842			item.setAttribute("subscription", "remove");
1843			account.getXmppConnection().sendIqPacket(iq, null);
1844		}
1845	}
1846
1847	public void updateConversation(Conversation conversation) {
1848		this.databaseBackend.updateConversation(conversation);
1849	}
1850
1851	public void reconnectAccount(final Account account, final boolean force) {
1852		new Thread(new Runnable() {
1853
1854			@Override
1855			public void run() {
1856				if (account.getXmppConnection() != null) {
1857					disconnect(account, force);
1858				}
1859				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1860					if (account.getXmppConnection() == null) {
1861						account.setXmppConnection(createConnection(account));
1862					}
1863					Thread thread = new Thread(account.getXmppConnection());
1864					thread.start();
1865					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1866							false);
1867				} else {
1868					account.getRoster().clearPresences();
1869					account.setXmppConnection(null);
1870				}
1871			}
1872		}).start();
1873	}
1874
1875	public void invite(Conversation conversation, Jid contact) {
1876		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1877		sendMessagePacket(conversation.getAccount(), packet);
1878	}
1879
1880	public void resetSendingToWaiting(Account account) {
1881		for (Conversation conversation : getConversations()) {
1882			if (conversation.getAccount() == account) {
1883				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
1884
1885					@Override
1886					public void onMessageFound(Message message) {
1887						markMessage(message, Message.STATUS_WAITING);
1888					}
1889				});
1890			}
1891		}
1892	}
1893
1894	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1895			final int status) {
1896		if (uuid == null) {
1897			return false;
1898		} else {
1899			for (Conversation conversation : getConversations()) {
1900				if (conversation.getJid().equals(recipient)
1901						&& conversation.getAccount().equals(account)) {
1902					return markMessage(conversation, uuid, status);
1903						}
1904			}
1905			return false;
1906		}
1907	}
1908
1909	public boolean markMessage(Conversation conversation, String uuid,
1910			int status) {
1911		if (uuid == null) {
1912			return false;
1913		} else {
1914			Message message = conversation.findSentMessageWithUuid(uuid);
1915			if (message!=null) {
1916				markMessage(message,status);
1917				return true;
1918			} else {
1919				return false;
1920			}
1921		}
1922	}
1923
1924	public void markMessage(Message message, int status) {
1925		if (status == Message.STATUS_SEND_FAILED
1926				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1927					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1928			return;
1929					}
1930		message.setStatus(status);
1931		databaseBackend.updateMessage(message);
1932		updateConversationUi();
1933	}
1934
1935	public SharedPreferences getPreferences() {
1936		return PreferenceManager
1937			.getDefaultSharedPreferences(getApplicationContext());
1938	}
1939
1940	public boolean forceEncryption() {
1941		return getPreferences().getBoolean("force_encryption", false);
1942	}
1943
1944	public boolean confirmMessages() {
1945		return getPreferences().getBoolean("confirm_messages", true);
1946	}
1947
1948	public boolean saveEncryptedMessages() {
1949		return !getPreferences().getBoolean("dont_save_encrypted", false);
1950	}
1951
1952	public boolean indicateReceived() {
1953		return getPreferences().getBoolean("indicate_received", false);
1954	}
1955
1956	public void updateConversationUi() {
1957		if (mOnConversationUpdate != null) {
1958			mOnConversationUpdate.onConversationUpdate();
1959		}
1960	}
1961
1962	public void updateAccountUi() {
1963		if (mOnAccountUpdate != null) {
1964			mOnAccountUpdate.onAccountUpdate();
1965		}
1966	}
1967
1968	public void updateRosterUi() {
1969		if (mOnRosterUpdate != null) {
1970			mOnRosterUpdate.onRosterUpdate();
1971		}
1972	}
1973
1974	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
1975		if (mOnUpdateBlocklist != null) {
1976			mOnUpdateBlocklist.OnUpdateBlocklist(status);
1977		}
1978	}
1979
1980	public void updateMucRosterUi() {
1981		if (mOnMucRosterUpdate != null) {
1982			mOnMucRosterUpdate.onMucRosterUpdate();
1983		}
1984	}
1985
1986	public Account findAccountByJid(final Jid accountJid) {
1987		for (Account account : this.accounts) {
1988			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1989				return account;
1990			}
1991		}
1992		return null;
1993	}
1994
1995	public Conversation findConversationByUuid(String uuid) {
1996		for (Conversation conversation : getConversations()) {
1997			if (conversation.getUuid().equals(uuid)) {
1998				return conversation;
1999			}
2000		}
2001		return null;
2002	}
2003
2004	public void markRead(final Conversation conversation) {
2005		mNotificationService.clear(conversation);
2006		conversation.markRead();
2007	}
2008
2009	public void sendReadMarker(final Conversation conversation) {
2010		final Message markable = conversation.getLatestMarkableMessage();
2011		this.markRead(conversation);
2012		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null) {
2013			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
2014			Account account = conversation.getAccount();
2015			final Jid to = markable.getCounterpart();
2016			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
2017			this.sendMessagePacket(conversation.getAccount(),packet);
2018		}
2019		updateConversationUi();
2020	}
2021
2022	public SecureRandom getRNG() {
2023		return this.mRandom;
2024	}
2025
2026	public MemorizingTrustManager getMemorizingTrustManager() {
2027		return this.mMemorizingTrustManager;
2028	}
2029
2030	public PowerManager getPowerManager() {
2031		return this.pm;
2032	}
2033
2034	public LruCache<String, Bitmap> getBitmapCache() {
2035		return this.mBitmapCache;
2036	}
2037
2038	public void syncRosterToDisk(final Account account) {
2039		new Thread(new Runnable() {
2040
2041			@Override
2042			public void run() {
2043				databaseBackend.writeRoster(account.getRoster());
2044			}
2045		}).start();
2046
2047	}
2048
2049	public List<String> getKnownHosts() {
2050		final List<String> hosts = new ArrayList<>();
2051		for (final Account account : getAccounts()) {
2052			if (!hosts.contains(account.getServer().toString())) {
2053				hosts.add(account.getServer().toString());
2054			}
2055			for (final Contact contact : account.getRoster().getContacts()) {
2056				if (contact.showInRoster()) {
2057					final String server = contact.getServer().toString();
2058					if (server != null && !hosts.contains(server)) {
2059						hosts.add(server);
2060					}
2061				}
2062			}
2063		}
2064		return hosts;
2065	}
2066
2067	public List<String> getKnownConferenceHosts() {
2068		final ArrayList<String> mucServers = new ArrayList<>();
2069		for (final Account account : accounts) {
2070			if (account.getXmppConnection() != null) {
2071				final String server = account.getXmppConnection().getMucServer();
2072				if (server != null && !mucServers.contains(server)) {
2073					mucServers.add(server);
2074				}
2075			}
2076		}
2077		return mucServers;
2078	}
2079
2080	public void sendMessagePacket(Account account, MessagePacket packet) {
2081		XmppConnection connection = account.getXmppConnection();
2082		if (connection != null) {
2083			connection.sendMessagePacket(packet);
2084		}
2085	}
2086
2087	public void sendPresencePacket(Account account, PresencePacket packet) {
2088		XmppConnection connection = account.getXmppConnection();
2089		if (connection != null) {
2090			connection.sendPresencePacket(packet);
2091		}
2092	}
2093
2094	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
2095		final XmppConnection connection = account.getXmppConnection();
2096		if (connection != null) {
2097			connection.sendIqPacket(packet, callback);
2098		}
2099	}
2100
2101	public MessageGenerator getMessageGenerator() {
2102		return this.mMessageGenerator;
2103	}
2104
2105	public PresenceGenerator getPresenceGenerator() {
2106		return this.mPresenceGenerator;
2107	}
2108
2109	public IqGenerator getIqGenerator() {
2110		return this.mIqGenerator;
2111	}
2112
2113	public IqParser getIqParser() { return this.mIqParser; }
2114
2115	public JingleConnectionManager getJingleConnectionManager() {
2116		return this.mJingleConnectionManager;
2117	}
2118
2119	public MessageArchiveService getMessageArchiveService() {
2120		return this.mMessageArchiveService;
2121	}
2122
2123	public List<Contact> findContacts(Jid jid) {
2124		ArrayList<Contact> contacts = new ArrayList<>();
2125		for (Account account : getAccounts()) {
2126			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2127				Contact contact = account.getRoster().getContactFromRoster(jid);
2128				if (contact != null) {
2129					contacts.add(contact);
2130				}
2131			}
2132		}
2133		return contacts;
2134	}
2135
2136	public NotificationService getNotificationService() {
2137		return this.mNotificationService;
2138	}
2139
2140	public HttpConnectionManager getHttpConnectionManager() {
2141		return this.mHttpConnectionManager;
2142	}
2143
2144	public void resendFailedMessages(final Message message) {
2145		final Collection<Message> messages = new ArrayList<>();
2146		Message current = message;
2147		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2148			messages.add(current);
2149			if (current.mergeable(current.next())) {
2150				current = current.next();
2151			} else {
2152				break;
2153			}
2154		}
2155		for (final Message msg : messages) {
2156			markMessage(msg, Message.STATUS_WAITING);
2157			this.resendMessage(msg);
2158		}
2159	}
2160
2161	public void clearConversationHistory(final Conversation conversation) {
2162		conversation.clearMessages();
2163		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
2164		new Thread(new Runnable() {
2165			@Override
2166			public void run() {
2167				databaseBackend.deleteMessagesInConversation(conversation);
2168			}
2169		}).start();
2170	}
2171
2172	public interface OnConversationUpdate {
2173		public void onConversationUpdate();
2174	}
2175
2176	public interface OnAccountUpdate {
2177		public void onAccountUpdate();
2178	}
2179
2180	public interface OnRosterUpdate {
2181		public void onRosterUpdate();
2182	}
2183
2184	public interface OnMucRosterUpdate {
2185		public void onMucRosterUpdate();
2186	}
2187
2188	private interface OnConferenceOptionsPushed {
2189		public void onPushSucceeded();
2190		public void onPushFailed();
2191	}
2192
2193	public class XmppConnectionBinder extends Binder {
2194		public XmppConnectionService getService() {
2195			return XmppConnectionService.this;
2196		}
2197	}
2198
2199	public void sendBlockRequest(final Blockable blockable) {
2200		if (blockable != null && blockable.getBlockedJid() != null) {
2201			final Jid jid = blockable.getBlockedJid();
2202			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid), new OnIqPacketReceived() {
2203
2204				@Override
2205				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2206					if (packet.getType() == IqPacket.TYPE.RESULT) {
2207						account.getBlocklist().add(jid);
2208						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
2209					}
2210				}
2211			});
2212		}
2213	}
2214
2215	public void sendUnblockRequest(final Blockable blockable) {
2216		if (blockable != null && blockable.getJid() != null) {
2217			final Jid jid = blockable.getBlockedJid();
2218			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
2219				@Override
2220				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2221					if (packet.getType() == IqPacket.TYPE.RESULT) {
2222						account.getBlocklist().remove(jid);
2223						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
2224					}
2225				}
2226			});
2227		}
2228	}
2229}