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