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