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