XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.PowerManager;
  20import android.os.PowerManager.WakeLock;
  21import android.os.SystemClock;
  22import android.preference.PreferenceManager;
  23import android.provider.ContactsContract;
  24import android.util.Log;
  25import android.util.LruCache;
  26
  27import net.java.otr4j.OtrException;
  28import net.java.otr4j.session.Session;
  29import net.java.otr4j.session.SessionID;
  30import net.java.otr4j.session.SessionStatus;
  31
  32import org.openintents.openpgp.util.OpenPgpApi;
  33import org.openintents.openpgp.util.OpenPgpServiceConnection;
  34
  35import java.io.FileNotFoundException;
  36import java.io.IOException;
  37import java.io.OutputStream;
  38import java.math.BigInteger;
  39import java.security.SecureRandom;
  40import java.text.SimpleDateFormat;
  41import java.util.ArrayList;
  42import java.util.Collections;
  43import java.util.Comparator;
  44import java.util.Date;
  45import java.util.Hashtable;
  46import java.util.List;
  47import java.util.Locale;
  48import java.util.TimeZone;
  49import java.util.concurrent.CopyOnWriteArrayList;
  50
  51import de.duenndns.ssl.MemorizingTrustManager;
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.crypto.PgpEngine;
  55import eu.siacs.conversations.entities.Account;
  56import eu.siacs.conversations.entities.Bookmark;
  57import eu.siacs.conversations.entities.Contact;
  58import eu.siacs.conversations.entities.Conversation;
  59import eu.siacs.conversations.entities.Downloadable;
  60import eu.siacs.conversations.entities.DownloadableFile;
  61import eu.siacs.conversations.entities.DownloadablePlaceholder;
  62import eu.siacs.conversations.entities.Message;
  63import eu.siacs.conversations.entities.MucOptions;
  64import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  65import eu.siacs.conversations.entities.Presences;
  66import eu.siacs.conversations.generator.IqGenerator;
  67import eu.siacs.conversations.generator.MessageGenerator;
  68import eu.siacs.conversations.generator.PresenceGenerator;
  69import eu.siacs.conversations.http.HttpConnectionManager;
  70import eu.siacs.conversations.parser.IqParser;
  71import eu.siacs.conversations.parser.MessageParser;
  72import eu.siacs.conversations.parser.PresenceParser;
  73import eu.siacs.conversations.persistance.DatabaseBackend;
  74import eu.siacs.conversations.persistance.FileBackend;
  75import eu.siacs.conversations.ui.UiCallback;
  76import eu.siacs.conversations.utils.CryptoHelper;
  77import eu.siacs.conversations.utils.ExceptionHelper;
  78import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  79import eu.siacs.conversations.utils.PRNGFixes;
  80import eu.siacs.conversations.utils.PhoneHelper;
  81import eu.siacs.conversations.xml.Element;
  82import eu.siacs.conversations.xmpp.OnBindListener;
  83import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  84import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  85import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  86import eu.siacs.conversations.xmpp.OnStatusChanged;
  87import eu.siacs.conversations.xmpp.XmppConnection;
  88import eu.siacs.conversations.xmpp.forms.Data;
  89import eu.siacs.conversations.xmpp.forms.Field;
  90import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  91import eu.siacs.conversations.xmpp.jid.Jid;
  92import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  93import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  94import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  95import eu.siacs.conversations.xmpp.pep.Avatar;
  96import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  97import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  98import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  99
 100public class XmppConnectionService extends Service {
 101
 102	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 103	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 104	public static String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 105	private ContentObserver contactObserver = new ContentObserver(null) {
 106		@Override
 107		public void onChange(boolean selfChange) {
 108			super.onChange(selfChange);
 109			Intent intent = new Intent(getApplicationContext(),
 110					XmppConnectionService.class);
 111			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 112			startService(intent);
 113		}
 114	};
 115	private final IBinder mBinder = new XmppConnectionBinder();
 116	public DatabaseBackend databaseBackend;
 117	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 118
 119		@Override
 120		public void onContactStatusChanged(Contact contact, boolean online) {
 121			Conversation conversation = find(getConversations(), contact);
 122			if (conversation != null) {
 123				if (online && contact.getPresences().size() > 1) {
 124					conversation.endOtrIfNeeded();
 125				} else {
 126					conversation.resetOtrSession();
 127				}
 128				if (online && (contact.getPresences().size() == 1)) {
 129					sendUnsendMessages(conversation);
 130				}
 131			}
 132		}
 133	};
 134	private FileBackend fileBackend = new FileBackend(this);
 135	private MemorizingTrustManager mMemorizingTrustManager;
 136	private NotificationService mNotificationService = new NotificationService(
 137			this);
 138	private MessageParser mMessageParser = new MessageParser(this);
 139	private PresenceParser mPresenceParser = new PresenceParser(this);
 140	private IqParser mIqParser = new IqParser(this);
 141	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 142	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 143	private List<Account> accounts;
 144	private final CopyOnWriteArrayList<Conversation> conversations = new CopyOnWriteArrayList<Conversation>();
 145	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 146			this);
 147	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 148			this);
 149	private AvatarService mAvatarService = new AvatarService(this);
 150	private OnConversationUpdate mOnConversationUpdate = null;
 151	private Integer convChangedListenerCount = 0;
 152	private OnAccountUpdate mOnAccountUpdate = null;
 153	private OnStatusChanged statusListener = new OnStatusChanged() {
 154
 155		@Override
 156		public void onStatusChanged(Account account) {
 157			XmppConnection connection = account.getXmppConnection();
 158			if (mOnAccountUpdate != null) {
 159				mOnAccountUpdate.onAccountUpdate();
 160			}
 161			if (account.getStatus() == Account.State.ONLINE) {
 162				for (Conversation conversation : account.pendingConferenceLeaves) {
 163					leaveMuc(conversation);
 164				}
 165				for (Conversation conversation : account.pendingConferenceJoins) {
 166					joinMuc(conversation);
 167				}
 168				mJingleConnectionManager.cancelInTransmission();
 169				List<Conversation> conversations = getConversations();
 170				for (Conversation conversation : conversations) {
 171					if (conversation.getAccount() == account) {
 172						conversation.startOtrIfNeeded();
 173						sendUnsendMessages(conversation);
 174					}
 175				}
 176				if (connection != null && connection.getFeatures().csi()) {
 177					if (checkListeners()) {
 178						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 179								+ " sending csi//inactive");
 180						connection.sendInactive();
 181					} else {
 182						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 183								+ " sending csi//active");
 184						connection.sendActive();
 185					}
 186				}
 187				syncDirtyContacts(account);
 188				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 189			} else if (account.getStatus() == Account.State.OFFLINE) {
 190				resetSendingToWaiting(account);
 191				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 192					int timeToReconnect = mRandom.nextInt(50) + 10;
 193					scheduleWakeupCall(timeToReconnect, false);
 194				}
 195			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 196				databaseBackend.updateAccount(account);
 197				reconnectAccount(account, true);
 198			} else if ((account.getStatus() != Account.State.CONNECTING)
 199					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 200				if (connection != null) {
 201					int next = connection.getTimeToNextAttempt();
 202					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 203							+ ": error connecting account. try again in "
 204							+ next + "s for the "
 205							+ (connection.getAttempt() + 1) + " time");
 206					scheduleWakeupCall((int) (next * 1.2), false);
 207				}
 208					}
 209			getNotificationService().updateErrorNotification();
 210		}
 211	};
 212	private Integer accountChangedListenerCount = 0;
 213	private OnRosterUpdate mOnRosterUpdate = null;
 214	private Integer rosterChangedListenerCount = 0;
 215	private SecureRandom mRandom;
 216	private FileObserver fileObserver = new FileObserver(
 217			FileBackend.getConversationsImageDirectory()) {
 218
 219		@Override
 220		public void onEvent(int event, String path) {
 221			if (event == FileObserver.DELETE) {
 222				markFileDeleted(path.split("\\.")[0]);
 223			}
 224		}
 225	};
 226	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 227
 228		@Override
 229		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 230			mJingleConnectionManager.deliverPacket(account, packet);
 231		}
 232	};
 233
 234	private OpenPgpServiceConnection pgpServiceConnection;
 235	private PgpEngine mPgpEngine = null;
 236	private Intent pingIntent;
 237	private PendingIntent pendingPingIntent = null;
 238	private WakeLock wakeLock;
 239	private PowerManager pm;
 240	private OnBindListener mOnBindListener = new OnBindListener() {
 241
 242		@Override
 243		public void onBind(final Account account) {
 244			account.getRoster().clearPresences();
 245			account.clearPresences(); // self presences
 246			account.pendingConferenceJoins.clear();
 247			account.pendingConferenceLeaves.clear();
 248			fetchRosterFromServer(account);
 249			fetchBookmarks(account);
 250			sendPresencePacket(account,
 251					mPresenceGenerator.sendPresence(account));
 252			connectMultiModeConversations(account);
 253			updateConversationUi();
 254		}
 255	};
 256
 257	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 258
 259		@Override
 260		public void onMessageAcknowledged(Account account, String uuid) {
 261			for (Conversation conversation : getConversations()) {
 262				if (conversation.getAccount() == account) {
 263					for (Message message : conversation.getMessages()) {
 264						if ((message.getStatus() == Message.STATUS_UNSEND || message
 265									.getStatus() == Message.STATUS_WAITING)
 266								&& message.getUuid().equals(uuid)) {
 267							markMessage(message, Message.STATUS_SEND);
 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
 591			.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 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 {
 815								if (bookmark.autojoin()) {
 816									conversation = findOrCreateConversation(
 817											account, bookmark.getJid(), true);
 818									conversation.setBookmark(bookmark);
 819									joinMuc(conversation);
 820								}
 821							}
 822						}
 823					}
 824				}
 825				account.setBookmarks(bookmarks);
 826			}
 827		};
 828		sendIqPacket(account, iqPacket, callback);
 829
 830	}
 831
 832	public void pushBookmarks(Account account) {
 833		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 834		Element query = iqPacket.query("jabber:iq:private");
 835		Element storage = query.addChild("storage", "storage:bookmarks");
 836		for (Bookmark bookmark : account.getBookmarks()) {
 837			storage.addChild(bookmark);
 838		}
 839		sendIqPacket(account, iqPacket, null);
 840	}
 841
 842	private void mergePhoneContactsWithRoster() {
 843		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 844				new OnPhoneContactsLoadedListener() {
 845					@Override
 846					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 847						for (Account account : accounts) {
 848							account.getRoster().clearSystemAccounts();
 849						}
 850						for (Bundle phoneContact : phoneContacts) {
 851							for (Account account : accounts) {
 852								Jid jid;
 853								try {
 854									jid = Jid.fromString(phoneContact.getString("jid"));
 855								} catch (final InvalidJidException e) {
 856									// TODO: Warn if contact import fails here?
 857									break;
 858								}
 859								final Contact contact = account.getRoster()
 860									.getContact(jid);
 861								String systemAccount = phoneContact
 862									.getInt("phoneid")
 863									+ "#"
 864									+ phoneContact.getString("lookup");
 865								contact.setSystemAccount(systemAccount);
 866								contact.setPhotoUri(phoneContact
 867										.getString("photouri"));
 868								contact.setSystemName(phoneContact
 869										.getString("displayname"));
 870								getAvatarService().clear(contact);
 871							}
 872						}
 873					}
 874				});
 875	}
 876
 877	private void initConversations() {
 878		synchronized (this.conversations) {
 879			Hashtable<String, Account> accountLookupTable = new Hashtable<>();
 880			for (Account account : this.accounts) {
 881				accountLookupTable.put(account.getUuid(), account);
 882			}
 883			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 884			for (Conversation conv : this.conversations) {
 885				Account account = accountLookupTable.get(conv.getAccountUuid());
 886				conv.setAccount(account);
 887				conv.addAll(0, databaseBackend.getMessages(conv, 50));
 888				checkDeletedFiles(conv);
 889			}
 890		}
 891	}
 892
 893	public List<Conversation> getConversations() {
 894		return this.conversations;
 895	}
 896
 897	private void checkDeletedFiles(Conversation conversation) {
 898		for (Message message : conversation.getMessages()) {
 899			if ((message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE)
 900					&& message.getEncryption() != Message.ENCRYPTION_PGP) {
 901				if (!getFileBackend().isFileAvailable(message)) {
 902					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 903				}
 904					}
 905		}
 906	}
 907
 908	private void markFileDeleted(String uuid) {
 909		for (Conversation conversation : getConversations()) {
 910			for (Message message : conversation.getMessages()) {
 911				if (message.getType() == Message.TYPE_IMAGE
 912						&& message.getEncryption() != Message.ENCRYPTION_PGP
 913						&& message.getUuid().equals(uuid)) {
 914					if (!getFileBackend().isFileAvailable(message)) {
 915						message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
 916						updateConversationUi();
 917					}
 918					return;
 919						}
 920			}
 921		}
 922	}
 923
 924	public void populateWithOrderedConversations(final List<Conversation> list) {
 925		populateWithOrderedConversations(list, true);
 926	}
 927
 928	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
 929		list.clear();
 930		if (includeConferences) {
 931			list.addAll(getConversations());
 932		} else {
 933			for (Conversation conversation : getConversations()) {
 934				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 935					list.add(conversation);
 936				}
 937			}
 938		}
 939		Collections.sort(list, new Comparator<Conversation>() {
 940			@Override
 941			public int compare(Conversation lhs, Conversation rhs) {
 942				Message left = lhs.getLatestMessage();
 943				Message right = rhs.getLatestMessage();
 944				if (left.getTimeSent() > right.getTimeSent()) {
 945					return -1;
 946				} else if (left.getTimeSent() < right.getTimeSent()) {
 947					return 1;
 948				} else {
 949					return 0;
 950				}
 951			}
 952		});
 953	}
 954
 955	public int loadMoreMessages(Conversation conversation, long timestamp) {
 956		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 957				timestamp);
 958		for (Message message : messages) {
 959			message.setConversation(conversation);
 960		}
 961		conversation.addAll(0, messages);
 962		return messages.size();
 963	}
 964
 965	public List<Account> getAccounts() {
 966		return this.accounts;
 967	}
 968
 969	public Conversation find(List<Conversation> haystack, Contact contact) {
 970		for (Conversation conversation : haystack) {
 971			if (conversation.getContact() == contact) {
 972				return conversation;
 973			}
 974		}
 975		return null;
 976	}
 977
 978	public Conversation find(final List<Conversation> haystack,
 979			final Account account,
 980			final Jid jid) {
 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.conversations.add(conversation);
1026			updateConversationUi();
1027			return conversation;
1028		}
1029	}
1030
1031	public void archiveConversation(Conversation conversation) {
1032		synchronized (this.conversations) {
1033			if (conversation.getMode() == Conversation.MODE_MULTI) {
1034				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1035					Bookmark bookmark = conversation.getBookmark();
1036					if (bookmark != null && bookmark.autojoin()) {
1037						bookmark.setAutojoin(false);
1038						pushBookmarks(bookmark.getAccount());
1039					}
1040				}
1041				leaveMuc(conversation);
1042			} else {
1043				conversation.endOtrIfNeeded();
1044			}
1045			this.databaseBackend.updateConversation(conversation);
1046			this.conversations.remove(conversation);
1047			updateConversationUi();
1048		}
1049	}
1050
1051	public void clearConversationHistory(Conversation conversation) {
1052		this.databaseBackend.deleteMessagesInConversation(conversation);
1053		conversation.getMessages().clear();
1054		updateConversationUi();
1055	}
1056
1057	public void createAccount(Account account) {
1058		account.initOtrEngine(this);
1059		databaseBackend.createAccount(account);
1060		this.accounts.add(account);
1061		this.reconnectAccount(account, false);
1062		updateAccountUi();
1063	}
1064
1065	public void updateAccount(Account account) {
1066		this.statusListener.onStatusChanged(account);
1067		databaseBackend.updateAccount(account);
1068		reconnectAccount(account, false);
1069		updateAccountUi();
1070		getNotificationService().updateErrorNotification();
1071	}
1072
1073	public void deleteAccount(Account account) {
1074		synchronized (this.conversations) {
1075			for (Conversation conversation : conversations) {
1076				if (conversation.getAccount() == account) {
1077					if (conversation.getMode() == Conversation.MODE_MULTI) {
1078						leaveMuc(conversation);
1079					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1080						conversation.endOtrIfNeeded();
1081					}
1082					conversations.remove(conversation);
1083				}
1084			}
1085			if (account.getXmppConnection() != null) {
1086				this.disconnect(account, true);
1087			}
1088			databaseBackend.deleteAccount(account);
1089			this.accounts.remove(account);
1090			updateAccountUi();
1091			getNotificationService().updateErrorNotification();
1092		}
1093	}
1094
1095	private void removeStaleListeners() {
1096		boolean removedListener = false;
1097		synchronized (this.convChangedListenerCount) {
1098			if (this.mOnConversationUpdate != null) {
1099				this.mOnConversationUpdate = null;
1100				this.convChangedListenerCount = 0;
1101				this.mNotificationService.setIsInForeground(false);
1102				removedListener = true;
1103			}
1104		}
1105		synchronized (this.accountChangedListenerCount) {
1106			if (this.mOnAccountUpdate != null) {
1107				this.mOnAccountUpdate = null;
1108				this.accountChangedListenerCount = 0;
1109				removedListener = true;
1110			}
1111		}
1112		synchronized (this.rosterChangedListenerCount) {
1113			if (this.mOnRosterUpdate != null) {
1114				this.mOnRosterUpdate = null;
1115				this.rosterChangedListenerCount = 0;
1116				removedListener = true;
1117			}
1118		}
1119		if (removedListener) {
1120			final String msg = "removed stale listeners";
1121			Log.d(Config.LOGTAG, msg);
1122			checkListeners();
1123			try {
1124				OutputStream os = openFileOutput("stacktrace.txt", MODE_PRIVATE);
1125				os.write(msg.getBytes());
1126				os.flush();
1127				os.close();
1128			} catch (final FileNotFoundException ignored) {
1129
1130			} catch (final IOException ignored) {
1131			}
1132		}
1133	}
1134
1135	public void setOnConversationListChangedListener(
1136			OnConversationUpdate listener) {
1137		/*if (!isScreenOn()) {
1138			Log.d(Config.LOGTAG,
1139			"ignoring setOnConversationListChangedListener");
1140			return;
1141			}*/
1142		synchronized (this.convChangedListenerCount) {
1143			if (checkListeners()) {
1144				switchToForeground();
1145			}
1146			this.mOnConversationUpdate = listener;
1147			this.mNotificationService.setIsInForeground(true);
1148			this.convChangedListenerCount++;
1149		}
1150			}
1151
1152	public void removeOnConversationListChangedListener() {
1153		synchronized (this.convChangedListenerCount) {
1154			this.convChangedListenerCount--;
1155			if (this.convChangedListenerCount <= 0) {
1156				this.convChangedListenerCount = 0;
1157				this.mOnConversationUpdate = null;
1158				this.mNotificationService.setIsInForeground(false);
1159				if (checkListeners()) {
1160					switchToBackground();
1161				}
1162			}
1163		}
1164	}
1165
1166	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1167		/*if (!isScreenOn()) {
1168			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1169			return;
1170			}*/
1171		synchronized (this.accountChangedListenerCount) {
1172			if (checkListeners()) {
1173				switchToForeground();
1174			}
1175			this.mOnAccountUpdate = listener;
1176			this.accountChangedListenerCount++;
1177		}
1178	}
1179
1180	public void removeOnAccountListChangedListener() {
1181		synchronized (this.accountChangedListenerCount) {
1182			this.accountChangedListenerCount--;
1183			if (this.accountChangedListenerCount <= 0) {
1184				this.mOnAccountUpdate = null;
1185				this.accountChangedListenerCount = 0;
1186				if (checkListeners()) {
1187					switchToBackground();
1188				}
1189			}
1190		}
1191	}
1192
1193	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1194		/*if (!isScreenOn()) {
1195			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1196			return;
1197			}*/
1198		synchronized (this.rosterChangedListenerCount) {
1199			if (checkListeners()) {
1200				switchToForeground();
1201			}
1202			this.mOnRosterUpdate = listener;
1203			this.rosterChangedListenerCount++;
1204		}
1205	}
1206
1207	public void removeOnRosterUpdateListener() {
1208		synchronized (this.rosterChangedListenerCount) {
1209			this.rosterChangedListenerCount--;
1210			if (this.rosterChangedListenerCount <= 0) {
1211				this.rosterChangedListenerCount = 0;
1212				this.mOnRosterUpdate = null;
1213				if (checkListeners()) {
1214					switchToBackground();
1215				}
1216			}
1217		}
1218	}
1219
1220	private boolean checkListeners() {
1221		return (this.mOnAccountUpdate == null
1222				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1223	}
1224
1225	private void switchToForeground() {
1226		for (Account account : getAccounts()) {
1227			if (account.getStatus() == Account.State.ONLINE) {
1228				XmppConnection connection = account.getXmppConnection();
1229				if (connection != null && connection.getFeatures().csi()) {
1230					connection.sendActive();
1231				}
1232			}
1233		}
1234		Log.d(Config.LOGTAG, "app switched into foreground");
1235	}
1236
1237	private void switchToBackground() {
1238		for (Account account : getAccounts()) {
1239			if (account.getStatus() == Account.State.ONLINE) {
1240				XmppConnection connection = account.getXmppConnection();
1241				if (connection != null && connection.getFeatures().csi()) {
1242					connection.sendInactive();
1243				}
1244			}
1245		}
1246		this.mNotificationService.setIsInForeground(false);
1247		Log.d(Config.LOGTAG, "app switched into background");
1248	}
1249
1250	private boolean isScreenOn() {
1251		PowerManager pm = (PowerManager) this
1252			.getSystemService(Context.POWER_SERVICE);
1253		return pm.isScreenOn();
1254	}
1255
1256	public void connectMultiModeConversations(Account account) {
1257		List<Conversation> conversations = getConversations();
1258		for (Conversation conversation : conversations) {
1259			if ((conversation.getMode() == Conversation.MODE_MULTI)
1260					&& (conversation.getAccount() == account)) {
1261				joinMuc(conversation);
1262					}
1263		}
1264	}
1265
1266	public void joinMuc(Conversation conversation) {
1267		Account account = conversation.getAccount();
1268		account.pendingConferenceJoins.remove(conversation);
1269		account.pendingConferenceLeaves.remove(conversation);
1270		if (account.getStatus() == Account.State.ONLINE) {
1271			Log.d(Config.LOGTAG,
1272					"joining conversation " + conversation.getContactJid());
1273			String nick = conversation.getMucOptions().getProposedNick();
1274			Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1275			PresencePacket packet = new PresencePacket();
1276			packet.setTo(joinJid);
1277			Element x = new Element("x");
1278			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1279			if (conversation.getMucOptions().getPassword() != null) {
1280				Element password = x.addChild("password");
1281				password.setContent(conversation.getMucOptions().getPassword());
1282			}
1283			String sig = account.getPgpSignature();
1284			if (sig != null) {
1285				packet.addChild("status").setContent("online");
1286				packet.addChild("x", "jabber:x:signed").setContent(sig);
1287			}
1288			if (conversation.getMessages().size() != 0) {
1289				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1290						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1291				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1292				Date date = new Date(conversation.getLatestMessage()
1293						.getTimeSent() + 1000);
1294				x.addChild("history").setAttribute("since",
1295						mDateFormat.format(date));
1296			}
1297			packet.addChild(x);
1298			sendPresencePacket(account, packet);
1299			if (!joinJid.equals(conversation.getContactJid())) {
1300				conversation.setContactJid(joinJid);
1301				databaseBackend.updateConversation(conversation);
1302			}
1303		} else {
1304			account.pendingConferenceJoins.add(conversation);
1305		}
1306	}
1307
1308	public void providePasswordForMuc(Conversation conversation, String password) {
1309		if (conversation.getMode() == Conversation.MODE_MULTI) {
1310			conversation.getMucOptions().setPassword(password);
1311			if (conversation.getBookmark() != null) {
1312				conversation.getBookmark().setAutojoin(true);
1313				pushBookmarks(conversation.getAccount());
1314			}
1315			databaseBackend.updateConversation(conversation);
1316			joinMuc(conversation);
1317		}
1318	}
1319
1320	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1321		final MucOptions options = conversation.getMucOptions();
1322		final Jid joinJid = options.createJoinJid(nick);
1323		if (options.online()) {
1324			Account account = conversation.getAccount();
1325			options.setOnRenameListener(new OnRenameListener() {
1326
1327				@Override
1328				public void onSuccess() {
1329					conversation.setContactJid(joinJid);
1330					databaseBackend.updateConversation(conversation);
1331					Bookmark bookmark = conversation.getBookmark();
1332					if (bookmark != null) {
1333						bookmark.setNick(nick);
1334						pushBookmarks(bookmark.getAccount());
1335					}
1336					callback.success(conversation);
1337				}
1338
1339				@Override
1340				public void onFailure() {
1341					callback.error(R.string.nick_in_use,conversation);
1342				}
1343			});
1344
1345			PresencePacket packet = new PresencePacket();
1346			packet.setTo(joinJid);
1347			packet.setFrom(conversation.getAccount().getJid());
1348
1349			String sig = account.getPgpSignature();
1350			if (sig != null) {
1351				packet.addChild("status").setContent("online");
1352				packet.addChild("x", "jabber:x:signed").setContent(sig);
1353			}
1354			sendPresencePacket(account, packet);
1355		} else {
1356			conversation.setContactJid(joinJid);
1357			databaseBackend.updateConversation(conversation);
1358			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1359				Bookmark bookmark = conversation.getBookmark();
1360				if (bookmark != null) {
1361					bookmark.setNick(nick);
1362					pushBookmarks(bookmark.getAccount());
1363				}
1364				joinMuc(conversation);
1365			}
1366		}
1367	}
1368
1369	public void leaveMuc(Conversation conversation) {
1370		Account account = conversation.getAccount();
1371		account.pendingConferenceJoins.remove(conversation);
1372		account.pendingConferenceLeaves.remove(conversation);
1373		if (account.getStatus() == Account.State.ONLINE) {
1374			PresencePacket packet = new PresencePacket();
1375			packet.setTo(conversation.getContactJid());
1376			packet.setFrom(conversation.getAccount().getJid());
1377			packet.setAttribute("type", "unavailable");
1378			sendPresencePacket(conversation.getAccount(), packet);
1379			conversation.getMucOptions().setOffline();
1380			conversation.deregisterWithBookmark();
1381			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1382					+ ": leaving muc " + conversation.getContactJid());
1383		} else {
1384			account.pendingConferenceLeaves.add(conversation);
1385		}
1386	}
1387
1388	private String findConferenceServer(final Account account) {
1389		String server;
1390		if (account.getXmppConnection() != null) {
1391			server = account.getXmppConnection().getMucServer();
1392			if (server != null) {
1393				return server;
1394			}
1395		}
1396		for(Account other : getAccounts()) {
1397			if (other != account && other.getXmppConnection() != null) {
1398				server = other.getXmppConnection().getMucServer();
1399				if (server != null) {
1400					return server;
1401				}
1402			}
1403		}
1404		return null;
1405	}
1406
1407	public void createAdhocConference(final Account account, final List<Jid> jids, final UiCallback<Conversation> callback) {
1408		Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": creating adhoc conference with "+ jids.toString());
1409		if (account.getStatus() == Account.State.ONLINE) {
1410			try {
1411				String server = findConferenceServer(account);
1412				if (server == null) {
1413					if (callback != null) {
1414						callback.error(R.string.no_conference_server_found,null);
1415					}
1416					return;
1417				}
1418				String name = new BigInteger(75,getRNG()).toString(32);
1419				Jid jid = Jid.fromParts(name,server,null);
1420				final Conversation conversation = findOrCreateConversation(account, jid, true);
1421				joinMuc(conversation);
1422				Bundle options = new Bundle();
1423				options.putString("muc#roomconfig_persistentroom", "1");
1424				options.putString("muc#roomconfig_membersonly", "1");
1425				options.putString("muc#roomconfig_publicroom", "0");
1426				options.putString("muc#roomconfig_whois", "anyone");
1427				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1428					@Override
1429					public void onPushSucceeded() {
1430						for(Jid invite : jids) {
1431							invite(conversation,invite);
1432						}
1433						if (callback != null) {
1434							callback.success(conversation);
1435						}
1436					}
1437
1438					@Override
1439					public void onPushFailed() {
1440						if (callback != null) {
1441							callback.error(R.string.conference_creation_failed, conversation);
1442						}
1443					}
1444				});
1445
1446			} catch (InvalidJidException e) {
1447				if (callback != null) {
1448					callback.error(R.string.conference_creation_failed, null);
1449				}
1450			}
1451		} else {
1452			if (callback != null) {
1453				callback.error(R.string.not_connected_try_again,null);
1454			}
1455		}
1456	}
1457
1458	public void pushConferenceConfiguration(final Conversation conversation,final Bundle options, final OnConferenceOptionsPushed callback) {
1459		IqPacket request = new IqPacket(IqPacket.TYPE_GET);
1460		request.setTo(conversation.getContactJid().toBareJid());
1461		request.query("http://jabber.org/protocol/muc#owner");
1462		sendIqPacket(conversation.getAccount(),request,new OnIqPacketReceived() {
1463			@Override
1464			public void onIqPacketReceived(Account account, IqPacket packet) {
1465				if (packet.getType() != IqPacket.TYPE_ERROR) {
1466					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1467					for (Field field : data.getFields()) {
1468						if (options.containsKey(field.getName())) {
1469							field.setValue(options.getString(field.getName()));
1470						}
1471					}
1472					data.submit();
1473					IqPacket set = new IqPacket(IqPacket.TYPE_SET);
1474					set.setTo(conversation.getContactJid().toBareJid());
1475					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1476					sendIqPacket(account, set, new OnIqPacketReceived() {
1477						@Override
1478						public void onIqPacketReceived(Account account, IqPacket packet) {
1479							if (packet.getType() == IqPacket.TYPE_RESULT) {
1480								if (callback != null) {
1481									callback.onPushSucceeded();
1482								}
1483							} else {
1484								if (callback != null) {
1485									callback.onPushFailed();
1486								}
1487							}
1488						}
1489					});
1490				} else {
1491					if (callback != null) {
1492						callback.onPushFailed();
1493					}
1494				}
1495			}
1496		});
1497	}
1498
1499	public void disconnect(Account account, boolean force) {
1500		if ((account.getStatus() == Account.State.ONLINE)
1501				|| (account.getStatus() == Account.State.DISABLED)) {
1502			if (!force) {
1503				List<Conversation> conversations = getConversations();
1504				for (Conversation conversation : conversations) {
1505					if (conversation.getAccount() == account) {
1506						if (conversation.getMode() == Conversation.MODE_MULTI) {
1507							leaveMuc(conversation);
1508						} else {
1509							if (conversation.endOtrIfNeeded()) {
1510								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1511										+ ": ended otr session with "
1512										+ conversation.getContactJid());
1513							}
1514						}
1515					}
1516				}
1517			}
1518			account.getXmppConnection().disconnect(force);
1519				}
1520	}
1521
1522	@Override
1523	public IBinder onBind(Intent intent) {
1524		return mBinder;
1525	}
1526
1527	public void updateMessage(Message message) {
1528		databaseBackend.updateMessage(message);
1529		updateConversationUi();
1530	}
1531
1532	protected void syncDirtyContacts(Account account) {
1533		for (Contact contact : account.getRoster().getContacts()) {
1534			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1535				pushContactToServer(contact);
1536			}
1537			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1538				deleteContactOnServer(contact);
1539			}
1540		}
1541	}
1542
1543	public void createContact(Contact contact) {
1544		SharedPreferences sharedPref = getPreferences();
1545		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1546		if (autoGrant) {
1547			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1548			contact.setOption(Contact.Options.ASKING);
1549		}
1550		pushContactToServer(contact);
1551	}
1552
1553	public void onOtrSessionEstablished(Conversation conversation) {
1554		Account account = conversation.getAccount();
1555		List<Message> messages = conversation.getMessages();
1556		Session otrSession = conversation.getOtrSession();
1557		Log.d(Config.LOGTAG,
1558				account.getJid().toBareJid() + " otr session established with "
1559				+ conversation.getContactJid() + "/"
1560				+ otrSession.getSessionID().getUserID());
1561		for (Message msg : messages) {
1562			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1563					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1564				SessionID id = otrSession.getSessionID();
1565				try {
1566					msg.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1567				} catch (InvalidJidException e) {
1568					break;
1569				}
1570				if (msg.getType() == Message.TYPE_TEXT) {
1571					MessagePacket outPacket = mMessageGenerator
1572						.generateOtrChat(msg, true);
1573					if (outPacket != null) {
1574						msg.setStatus(Message.STATUS_SEND);
1575						databaseBackend.updateMessage(msg);
1576						sendMessagePacket(account, outPacket);
1577					}
1578				} else if (msg.getType() == Message.TYPE_IMAGE || msg.getType() == Message.TYPE_FILE) {
1579					mJingleConnectionManager.createNewConnection(msg);
1580				}
1581					}
1582		}
1583		updateConversationUi();
1584	}
1585
1586	public boolean renewSymmetricKey(Conversation conversation) {
1587		Account account = conversation.getAccount();
1588		byte[] symmetricKey = new byte[32];
1589		this.mRandom.nextBytes(symmetricKey);
1590		Session otrSession = conversation.getOtrSession();
1591		if (otrSession != null) {
1592			MessagePacket packet = new MessagePacket();
1593			packet.setType(MessagePacket.TYPE_CHAT);
1594			packet.setFrom(account.getJid());
1595			packet.addChild("private", "urn:xmpp:carbons:2");
1596			packet.addChild("no-copy", "urn:xmpp:hints");
1597			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1598					+ otrSession.getSessionID().getUserID());
1599			try {
1600				packet.setBody(otrSession
1601						.transformSending(CryptoHelper.FILETRANSFER
1602							+ CryptoHelper.bytesToHex(symmetricKey)));
1603				sendMessagePacket(account, packet);
1604				conversation.setSymmetricKey(symmetricKey);
1605				return true;
1606			} catch (OtrException e) {
1607				return false;
1608			}
1609		}
1610		return false;
1611	}
1612
1613	public void pushContactToServer(Contact contact) {
1614		contact.resetOption(Contact.Options.DIRTY_DELETE);
1615		contact.setOption(Contact.Options.DIRTY_PUSH);
1616		Account account = contact.getAccount();
1617		if (account.getStatus() == Account.State.ONLINE) {
1618			boolean ask = contact.getOption(Contact.Options.ASKING);
1619			boolean sendUpdates = contact
1620				.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1621				&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1622			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1623			iq.query("jabber:iq:roster").addChild(contact.asElement());
1624			account.getXmppConnection().sendIqPacket(iq, null);
1625			if (sendUpdates) {
1626				sendPresencePacket(account,
1627						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1628			}
1629			if (ask) {
1630				sendPresencePacket(account,
1631						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1632			}
1633		}
1634	}
1635
1636	public void publishAvatar(Account account, Uri image,
1637			final UiCallback<Avatar> callback) {
1638		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1639		final int size = Config.AVATAR_SIZE;
1640		final Avatar avatar = getFileBackend()
1641			.getPepAvatar(image, size, format);
1642		if (avatar != null) {
1643			avatar.height = size;
1644			avatar.width = size;
1645			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1646				avatar.type = "image/webp";
1647			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1648				avatar.type = "image/jpeg";
1649			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1650				avatar.type = "image/png";
1651			}
1652			if (!getFileBackend().save(avatar)) {
1653				callback.error(R.string.error_saving_avatar, avatar);
1654				return;
1655			}
1656			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1657			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1658
1659				@Override
1660				public void onIqPacketReceived(Account account, IqPacket result) {
1661					if (result.getType() == IqPacket.TYPE_RESULT) {
1662						IqPacket packet = XmppConnectionService.this.mIqGenerator
1663							.publishAvatarMetadata(avatar);
1664						sendIqPacket(account, packet, new OnIqPacketReceived() {
1665
1666							@Override
1667							public void onIqPacketReceived(Account account,
1668									IqPacket result) {
1669								if (result.getType() == IqPacket.TYPE_RESULT) {
1670									if (account.setAvatar(avatar.getFilename())) {
1671										databaseBackend.updateAccount(account);
1672									}
1673									callback.success(avatar);
1674								} else {
1675									callback.error(
1676											R.string.error_publish_avatar_server_reject,
1677											avatar);
1678								}
1679							}
1680						});
1681					} else {
1682						callback.error(
1683								R.string.error_publish_avatar_server_reject,
1684								avatar);
1685					}
1686				}
1687			});
1688		} else {
1689			callback.error(R.string.error_publish_avatar_converting, null);
1690		}
1691	}
1692
1693	public void fetchAvatar(Account account, Avatar avatar) {
1694		fetchAvatar(account, avatar, null);
1695	}
1696
1697	public void fetchAvatar(Account account, final Avatar avatar,
1698			final UiCallback<Avatar> callback) {
1699		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1700		sendIqPacket(account, packet, new OnIqPacketReceived() {
1701
1702			@Override
1703			public void onIqPacketReceived(Account account, IqPacket result) {
1704				final String ERROR = account.getJid().toBareJid()
1705					+ ": fetching avatar for " + avatar.owner + " failed ";
1706				if (result.getType() == IqPacket.TYPE_RESULT) {
1707					avatar.image = mIqParser.avatarData(result);
1708					if (avatar.image != null) {
1709						if (getFileBackend().save(avatar)) {
1710							if (account.getJid().toBareJid().equals(avatar.owner)) {
1711								if (account.setAvatar(avatar.getFilename())) {
1712									databaseBackend.updateAccount(account);
1713								}
1714								getAvatarService().clear(account);
1715								updateConversationUi();
1716								updateAccountUi();
1717							} else {
1718								Contact contact = account.getRoster()
1719									.getContact(avatar.owner);
1720								contact.setAvatar(avatar.getFilename());
1721								getAvatarService().clear(contact);
1722								updateConversationUi();
1723								updateRosterUi();
1724							}
1725							if (callback != null) {
1726								callback.success(avatar);
1727							}
1728							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1729									+ ": succesfully fetched avatar for "
1730									+ avatar.owner);
1731							return;
1732						}
1733					} else {
1734
1735						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1736					}
1737				} else {
1738					Element error = result.findChild("error");
1739					if (error == null) {
1740						Log.d(Config.LOGTAG, ERROR + "(server error)");
1741					} else {
1742						Log.d(Config.LOGTAG, ERROR + error.toString());
1743					}
1744				}
1745				if (callback != null) {
1746					callback.error(0, null);
1747				}
1748
1749			}
1750		});
1751	}
1752
1753	public void checkForAvatar(Account account,
1754			final UiCallback<Avatar> callback) {
1755		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1756		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1757
1758			@Override
1759			public void onIqPacketReceived(Account account, IqPacket packet) {
1760				if (packet.getType() == IqPacket.TYPE_RESULT) {
1761					Element pubsub = packet.findChild("pubsub",
1762							"http://jabber.org/protocol/pubsub");
1763					if (pubsub != null) {
1764						Element items = pubsub.findChild("items");
1765						if (items != null) {
1766							Avatar avatar = Avatar.parseMetadata(items);
1767							if (avatar != null) {
1768								avatar.owner = account.getJid().toBareJid();
1769								if (fileBackend.isAvatarCached(avatar)) {
1770									if (account.setAvatar(avatar.getFilename())) {
1771										databaseBackend.updateAccount(account);
1772									}
1773									getAvatarService().clear(account);
1774									callback.success(avatar);
1775								} else {
1776									fetchAvatar(account, avatar, callback);
1777								}
1778								return;
1779							}
1780						}
1781					}
1782				}
1783				callback.error(0, null);
1784			}
1785		});
1786	}
1787
1788	public void deleteContactOnServer(Contact contact) {
1789		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1790		contact.resetOption(Contact.Options.DIRTY_PUSH);
1791		contact.setOption(Contact.Options.DIRTY_DELETE);
1792		Account account = contact.getAccount();
1793		if (account.getStatus() == Account.State.ONLINE) {
1794			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1795			Element item = iq.query("jabber:iq:roster").addChild("item");
1796			item.setAttribute("jid", contact.getJid().toString());
1797			item.setAttribute("subscription", "remove");
1798			account.getXmppConnection().sendIqPacket(iq, null);
1799		}
1800	}
1801
1802	public void updateConversation(Conversation conversation) {
1803		this.databaseBackend.updateConversation(conversation);
1804	}
1805
1806	public void reconnectAccount(final Account account, final boolean force) {
1807		new Thread(new Runnable() {
1808
1809			@Override
1810			public void run() {
1811				if (account.getXmppConnection() != null) {
1812					disconnect(account, force);
1813				}
1814				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1815					if (account.getXmppConnection() == null) {
1816						account.setXmppConnection(createConnection(account));
1817					}
1818					Thread thread = new Thread(account.getXmppConnection());
1819					thread.start();
1820					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1821							false);
1822				} else {
1823					account.getRoster().clearPresences();
1824					account.setXmppConnection(null);
1825				}
1826			}
1827		}).start();
1828	}
1829
1830	public void invite(Conversation conversation, Jid contact) {
1831		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1832		sendMessagePacket(conversation.getAccount(), packet);
1833	}
1834
1835	public void resetSendingToWaiting(Account account) {
1836		for (Conversation conversation : getConversations()) {
1837			if (conversation.getAccount() == account) {
1838				for (Message message : conversation.getMessages()) {
1839					if (message.getType() != Message.TYPE_IMAGE
1840							&& message.getStatus() == Message.STATUS_UNSEND) {
1841						markMessage(message, Message.STATUS_WAITING);
1842							}
1843				}
1844			}
1845		}
1846	}
1847
1848	public boolean markMessage(final Account account, final Jid recipient, final String uuid,
1849			final int status) {
1850		if (uuid == null) {
1851			return false;
1852		} else {
1853			for (Conversation conversation : getConversations()) {
1854				if (conversation.getContactJid().equals(recipient)
1855						&& conversation.getAccount().equals(account)) {
1856					return markMessage(conversation, uuid, status);
1857						}
1858			}
1859			return false;
1860		}
1861	}
1862
1863	public boolean markMessage(Conversation conversation, String uuid,
1864			int status) {
1865		if (uuid == null) {
1866			return false;
1867		} else {
1868			for (Message message : conversation.getMessages()) {
1869				if (uuid.equals(message.getUuid())
1870						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1871							.equals(message.getRemoteMsgId()))) {
1872					markMessage(message, status);
1873					return true;
1874							}
1875			}
1876			return false;
1877		}
1878	}
1879
1880	public void markMessage(Message message, int status) {
1881		if (status == Message.STATUS_SEND_FAILED
1882				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1883					.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1884			return;
1885					}
1886		message.setStatus(status);
1887		databaseBackend.updateMessage(message);
1888		updateConversationUi();
1889	}
1890
1891	public SharedPreferences getPreferences() {
1892		return PreferenceManager
1893			.getDefaultSharedPreferences(getApplicationContext());
1894	}
1895
1896	public boolean forceEncryption() {
1897		return getPreferences().getBoolean("force_encryption", false);
1898	}
1899
1900	public boolean confirmMessages() {
1901		return getPreferences().getBoolean("confirm_messages", true);
1902	}
1903
1904	public boolean saveEncryptedMessages() {
1905		return !getPreferences().getBoolean("dont_save_encrypted", false);
1906	}
1907
1908	public boolean indicateReceived() {
1909		return getPreferences().getBoolean("indicate_received", false);
1910	}
1911
1912	public void updateConversationUi() {
1913		if (mOnConversationUpdate != null) {
1914			mOnConversationUpdate.onConversationUpdate();
1915		}
1916	}
1917
1918	public void updateAccountUi() {
1919		if (mOnAccountUpdate != null) {
1920			mOnAccountUpdate.onAccountUpdate();
1921		}
1922	}
1923
1924	public void updateRosterUi() {
1925		if (mOnRosterUpdate != null) {
1926			mOnRosterUpdate.onRosterUpdate();
1927		}
1928	}
1929
1930	public Account findAccountByJid(final Jid accountJid) {
1931		for (Account account : this.accounts) {
1932			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
1933				return account;
1934			}
1935		}
1936		return null;
1937	}
1938
1939	public Conversation findConversationByUuid(String uuid) {
1940		for (Conversation conversation : getConversations()) {
1941			if (conversation.getUuid().equals(uuid)) {
1942				return conversation;
1943			}
1944		}
1945		return null;
1946	}
1947
1948	public void markRead(Conversation conversation, boolean calledByUi) {
1949		mNotificationService.clear(conversation);
1950		final Message markable = conversation.getLatestMarkableMessage();
1951		conversation.markRead();
1952		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null && calledByUi) {
1953			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()+ ": sending read marker to " + markable.getCounterpart().toString());
1954			Account account = conversation.getAccount();
1955			final Jid to = markable.getCounterpart();
1956			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
1957			this.sendMessagePacket(conversation.getAccount(),packet);
1958		}
1959		if (!calledByUi) {
1960			updateConversationUi();
1961		}
1962	}
1963
1964	public void failWaitingOtrMessages(Conversation conversation) {
1965		for (Message message : conversation.getMessages()) {
1966			if (message.getEncryption() == Message.ENCRYPTION_OTR
1967					&& message.getStatus() == Message.STATUS_WAITING) {
1968				markMessage(message, Message.STATUS_SEND_FAILED);
1969					}
1970		}
1971	}
1972
1973	public SecureRandom getRNG() {
1974		return this.mRandom;
1975	}
1976
1977	public MemorizingTrustManager getMemorizingTrustManager() {
1978		return this.mMemorizingTrustManager;
1979	}
1980
1981	public PowerManager getPowerManager() {
1982		return this.pm;
1983	}
1984
1985	public LruCache<String, Bitmap> getBitmapCache() {
1986		return this.mBitmapCache;
1987	}
1988
1989	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1990		if (account.getStatus() == Account.State.ONLINE) {
1991			MessagePacket error = this.mMessageGenerator
1992				.generateNotAcceptable(packet);
1993			sendMessagePacket(account, error);
1994		}
1995	}
1996
1997	public void syncRosterToDisk(final Account account) {
1998		new Thread(new Runnable() {
1999
2000			@Override
2001			public void run() {
2002				databaseBackend.writeRoster(account.getRoster());
2003			}
2004		}).start();
2005
2006	}
2007
2008	public List<String> getKnownHosts() {
2009		List<String> hosts = new ArrayList<>();
2010		for (Account account : getAccounts()) {
2011			if (!hosts.contains(account.getServer().toString())) {
2012				hosts.add(account.getServer().toString());
2013			}
2014			for (Contact contact : account.getRoster().getContacts()) {
2015				if (contact.showInRoster()) {
2016					final String server = contact.getServer().toString();
2017					if (server != null && !hosts.contains(server)) {
2018						hosts.add(server);
2019					}
2020				}
2021			}
2022		}
2023		return hosts;
2024	}
2025
2026	public List<String> getKnownConferenceHosts() {
2027		ArrayList<String> mucServers = new ArrayList<>();
2028		for (Account account : accounts) {
2029			if (account.getXmppConnection() != null) {
2030				String server = account.getXmppConnection().getMucServer();
2031				if (server != null && !mucServers.contains(server)) {
2032					mucServers.add(server);
2033				}
2034			}
2035		}
2036		return mucServers;
2037	}
2038
2039	public void sendMessagePacket(Account account, MessagePacket packet) {
2040		XmppConnection connection = account.getXmppConnection();
2041		if (connection != null) {
2042			connection.sendMessagePacket(packet);
2043		}
2044	}
2045
2046	public void sendPresencePacket(Account account, PresencePacket packet) {
2047		XmppConnection connection = account.getXmppConnection();
2048		if (connection != null) {
2049			connection.sendPresencePacket(packet);
2050		}
2051	}
2052
2053	public void sendIqPacket(Account account, IqPacket packet,
2054			OnIqPacketReceived callback) {
2055		XmppConnection connection = account.getXmppConnection();
2056		if (connection != null) {
2057			connection.sendIqPacket(packet, callback);
2058		}
2059	}
2060
2061	public MessageGenerator getMessageGenerator() {
2062		return this.mMessageGenerator;
2063	}
2064
2065	public PresenceGenerator getPresenceGenerator() {
2066		return this.mPresenceGenerator;
2067	}
2068
2069	public IqGenerator getIqGenerator() {
2070		return this.mIqGenerator;
2071	}
2072
2073	public JingleConnectionManager getJingleConnectionManager() {
2074		return this.mJingleConnectionManager;
2075	}
2076
2077	public List<Contact> findContacts(Jid jid) {
2078		ArrayList<Contact> contacts = new ArrayList<>();
2079		for (Account account : getAccounts()) {
2080			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2081				Contact contact = account.getRoster().getContactFromRoster(jid);
2082				if (contact != null) {
2083					contacts.add(contact);
2084				}
2085			}
2086		}
2087		return contacts;
2088	}
2089
2090	public NotificationService getNotificationService() {
2091		return this.mNotificationService;
2092	}
2093
2094	public HttpConnectionManager getHttpConnectionManager() {
2095		return this.mHttpConnectionManager;
2096	}
2097
2098	public void resendFailedMessages(Message message) {
2099		List<Message> messages = new ArrayList<>();
2100		Message current = message;
2101		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2102			messages.add(current);
2103			if (current.mergeable(current.next())) {
2104				current = current.next();
2105			} else {
2106				break;
2107			}
2108		}
2109		for (Message msg : messages) {
2110			markMessage(msg, Message.STATUS_WAITING);
2111			this.resendMessage(msg);
2112		}
2113	}
2114
2115	public interface OnConversationUpdate {
2116		public void onConversationUpdate();
2117	}
2118
2119	public interface OnAccountUpdate {
2120		public void onAccountUpdate();
2121	}
2122
2123	public interface OnRosterUpdate {
2124		public void onRosterUpdate();
2125	}
2126
2127	private interface OnConferenceOptionsPushed {
2128		public void onPushSucceeded();
2129		public void onPushFailed();
2130	}
2131
2132	public class XmppConnectionBinder extends Binder {
2133		public XmppConnectionService getService() {
2134			return XmppConnectionService.this;
2135		}
2136	}
2137}