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