XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.security.SecureRandom;
   4import java.text.SimpleDateFormat;
   5import java.util.ArrayList;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.TimeZone;
  13import java.util.concurrent.CopyOnWriteArrayList;
  14
  15import org.openintents.openpgp.util.OpenPgpApi;
  16import org.openintents.openpgp.util.OpenPgpServiceConnection;
  17
  18import de.duenndns.ssl.MemorizingTrustManager;
  19
  20import net.java.otr4j.OtrException;
  21import net.java.otr4j.session.Session;
  22import net.java.otr4j.session.SessionStatus;
  23import eu.siacs.conversations.Config;
  24import eu.siacs.conversations.R;
  25import eu.siacs.conversations.crypto.PgpEngine;
  26import eu.siacs.conversations.entities.Account;
  27import eu.siacs.conversations.entities.Bookmark;
  28import eu.siacs.conversations.entities.Contact;
  29import eu.siacs.conversations.entities.Conversation;
  30import eu.siacs.conversations.entities.Downloadable;
  31import eu.siacs.conversations.entities.Message;
  32import eu.siacs.conversations.entities.MucOptions;
  33import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  34import eu.siacs.conversations.entities.Presences;
  35import eu.siacs.conversations.generator.IqGenerator;
  36import eu.siacs.conversations.generator.MessageGenerator;
  37import eu.siacs.conversations.generator.PresenceGenerator;
  38import eu.siacs.conversations.http.HttpConnectionManager;
  39import eu.siacs.conversations.parser.IqParser;
  40import eu.siacs.conversations.parser.MessageParser;
  41import eu.siacs.conversations.parser.PresenceParser;
  42import eu.siacs.conversations.persistance.DatabaseBackend;
  43import eu.siacs.conversations.persistance.FileBackend;
  44import eu.siacs.conversations.ui.UiCallback;
  45import eu.siacs.conversations.utils.CryptoHelper;
  46import eu.siacs.conversations.utils.ExceptionHelper;
  47import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  48import eu.siacs.conversations.utils.PRNGFixes;
  49import eu.siacs.conversations.utils.PhoneHelper;
  50import eu.siacs.conversations.utils.UIHelper;
  51import eu.siacs.conversations.xml.Element;
  52import eu.siacs.conversations.xmpp.OnBindListener;
  53import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  54import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  55import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  56import eu.siacs.conversations.xmpp.OnStatusChanged;
  57import eu.siacs.conversations.xmpp.XmppConnection;
  58import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  59import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  60import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  61import eu.siacs.conversations.xmpp.pep.Avatar;
  62import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  63import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  64import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  65import android.annotation.SuppressLint;
  66import android.app.AlarmManager;
  67import android.app.PendingIntent;
  68import android.app.Service;
  69import android.content.Context;
  70import android.content.Intent;
  71import android.content.SharedPreferences;
  72import android.database.ContentObserver;
  73import android.graphics.Bitmap;
  74import android.net.ConnectivityManager;
  75import android.net.NetworkInfo;
  76import android.net.Uri;
  77import android.os.Binder;
  78import android.os.Bundle;
  79import android.os.FileObserver;
  80import android.os.IBinder;
  81import android.os.PowerManager;
  82import android.os.PowerManager.WakeLock;
  83import android.os.SystemClock;
  84import android.preference.PreferenceManager;
  85import android.provider.ContactsContract;
  86import android.util.Log;
  87
  88public class XmppConnectionService extends Service {
  89
  90	public DatabaseBackend databaseBackend;
  91	private FileBackend fileBackend;
  92
  93	public long startDate;
  94
  95	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  96	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
  97
  98	private MemorizingTrustManager mMemorizingTrustManager;
  99
 100	private NotificationService mNotificationService;
 101
 102	private MessageParser mMessageParser = new MessageParser(this);
 103	private PresenceParser mPresenceParser = new PresenceParser(this);
 104	private IqParser mIqParser = new IqParser(this);
 105	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 106	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 107
 108	private List<Account> accounts;
 109	private CopyOnWriteArrayList<Conversation> conversations = null;
 110	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 111			this);
 112	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 113			this);
 114
 115	private OnConversationUpdate mOnConversationUpdate = null;
 116	private Integer convChangedListenerCount = 0;
 117	private OnAccountUpdate mOnAccountUpdate = null;
 118	private Integer accountChangedListenerCount = 0;
 119	private OnRosterUpdate mOnRosterUpdate = null;
 120	private Integer rosterChangedListenerCount = 0;
 121	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 122
 123		@Override
 124		public void onContactStatusChanged(Contact contact, boolean online) {
 125			Conversation conversation = find(getConversations(), contact);
 126			if (conversation != null) {
 127				conversation.endOtrIfNeeded();
 128				if (online && (contact.getPresences().size() == 1)) {
 129					sendUnsendMessages(conversation);
 130				}
 131			}
 132		}
 133	};
 134
 135	private SecureRandom mRandom;
 136
 137	private ContentObserver contactObserver = new ContentObserver(null) {
 138		@Override
 139		public void onChange(boolean selfChange) {
 140			super.onChange(selfChange);
 141			Intent intent = new Intent(getApplicationContext(),
 142					XmppConnectionService.class);
 143			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 144			startService(intent);
 145		}
 146	};
 147	
 148	private FileObserver fileObserver = new FileObserver(FileBackend.getConversationsDirectory()) {
 149		
 150		@Override
 151		public void onEvent(int event, String path) {
 152			if (event == FileObserver.DELETE) {
 153				markFileDeleted(path.split("\\.")[0]);
 154			}
 155		}
 156	};
 157
 158	private final IBinder mBinder = new XmppConnectionBinder();
 159	private OnStatusChanged statusListener = new OnStatusChanged() {
 160
 161		@Override
 162		public void onStatusChanged(Account account) {
 163			XmppConnection connection = account.getXmppConnection();
 164			if (mOnAccountUpdate != null) {
 165				mOnAccountUpdate.onAccountUpdate();
 166				;
 167			}
 168			if (account.getStatus() == Account.STATUS_ONLINE) {
 169				for (Conversation conversation : account.pendingConferenceLeaves) {
 170					leaveMuc(conversation);
 171				}
 172				for (Conversation conversation : account.pendingConferenceJoins) {
 173					joinMuc(conversation);
 174				}
 175				mJingleConnectionManager.cancelInTransmission();
 176				List<Conversation> conversations = getConversations();
 177				for (int i = 0; i < conversations.size(); ++i) {
 178					if (conversations.get(i).getAccount() == account) {
 179						conversations.get(i).startOtrIfNeeded();
 180						sendUnsendMessages(conversations.get(i));
 181					}
 182				}
 183				if (connection != null && connection.getFeatures().csi()) {
 184					if (checkListeners()) {
 185						Log.d(Config.LOGTAG, account.getJid()
 186								+ " sending csi//inactive");
 187						connection.sendInactive();
 188					} else {
 189						Log.d(Config.LOGTAG, account.getJid()
 190								+ " sending csi//active");
 191						connection.sendActive();
 192					}
 193				}
 194				syncDirtyContacts(account);
 195				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 196			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 197				resetSendingToWaiting(account);
 198				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 199					int timeToReconnect = mRandom.nextInt(50) + 10;
 200					scheduleWakeupCall(timeToReconnect, false);
 201				}
 202			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 203				databaseBackend.updateAccount(account);
 204				reconnectAccount(account, true);
 205			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 206					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 207				if (connection != null) {
 208					int next = connection.getTimeToNextAttempt();
 209					Log.d(Config.LOGTAG, account.getJid()
 210							+ ": error connecting account. try again in "
 211							+ next + "s for the "
 212							+ (connection.getAttempt() + 1) + " time");
 213					scheduleWakeupCall((int) (next * 1.2), false);
 214				}
 215			}
 216			UIHelper.showErrorNotification(getApplicationContext(),
 217					getAccounts());
 218		}
 219	};
 220
 221	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 222
 223		@Override
 224		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 225			mJingleConnectionManager.deliverPacket(account, packet);
 226		}
 227	};
 228
 229	private OpenPgpServiceConnection pgpServiceConnection;
 230	private PgpEngine mPgpEngine = null;
 231	private Intent pingIntent;
 232	private PendingIntent pendingPingIntent = null;
 233	private WakeLock wakeLock;
 234	private PowerManager pm;
 235	private OnBindListener mOnBindListener = new OnBindListener() {
 236
 237		@Override
 238		public void onBind(final Account account) {
 239			account.getRoster().clearPresences();
 240			account.clearPresences(); // self presences
 241			account.pendingConferenceJoins.clear();
 242			account.pendingConferenceLeaves.clear();
 243			fetchRosterFromServer(account);
 244			fetchBookmarks(account);
 245			sendPresencePacket(account,
 246					mPresenceGenerator.sendPresence(account));
 247			connectMultiModeConversations(account);
 248			updateConversationUi();
 249		}
 250	};
 251
 252	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 253
 254		@Override
 255		public void onMessageAcknowledged(Account account, String uuid) {
 256			for (Conversation conversation : getConversations()) {
 257				if (conversation.getAccount() == account) {
 258					for (Message message : conversation.getMessages()) {
 259						if ((message.getStatus() == Message.STATUS_UNSEND || message
 260								.getStatus() == Message.STATUS_WAITING)
 261								&& message.getUuid().equals(uuid)) {
 262							markMessage(message, Message.STATUS_SEND);
 263							return;
 264						}
 265					}
 266				}
 267			}
 268		}
 269	};
 270
 271	public PgpEngine getPgpEngine() {
 272		if (pgpServiceConnection.isBound()) {
 273			if (this.mPgpEngine == null) {
 274				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 275						getApplicationContext(),
 276						pgpServiceConnection.getService()), this);
 277			}
 278			return mPgpEngine;
 279		} else {
 280			return null;
 281		}
 282
 283	}
 284
 285	public FileBackend getFileBackend() {
 286		return this.fileBackend;
 287	}
 288
 289	public Message attachImageToConversation(final Conversation conversation,
 290			final Uri uri, final UiCallback<Message> callback) {
 291		final Message message;
 292		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 293			message = new Message(conversation, "",
 294					Message.ENCRYPTION_DECRYPTED);
 295		} else {
 296			message = new Message(conversation, "",
 297					conversation.getNextEncryption(forceEncryption()));
 298		}
 299		message.setPresence(conversation.getNextPresence());
 300		message.setType(Message.TYPE_IMAGE);
 301		message.setStatus(Message.STATUS_OFFERED);
 302		new Thread(new Runnable() {
 303
 304			@Override
 305			public void run() {
 306				try {
 307					getFileBackend().copyImageToPrivateStorage(message, uri);
 308					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 309						getPgpEngine().encrypt(message, callback);
 310					} else {
 311						callback.success(message);
 312					}
 313				} catch (FileBackend.ImageCopyException e) {
 314					callback.error(e.getResId(), message);
 315				}
 316			}
 317		}).start();
 318		return message;
 319	}
 320
 321	public Conversation find(Bookmark bookmark) {
 322		return find(bookmark.getAccount(), bookmark.getJid());
 323	}
 324
 325	public Conversation find(Account account, String jid) {
 326		return find(getConversations(), account, jid);
 327	}
 328
 329	public class XmppConnectionBinder extends Binder {
 330		public XmppConnectionService getService() {
 331			return XmppConnectionService.this;
 332		}
 333	}
 334
 335	@Override
 336	public int onStartCommand(Intent intent, int flags, int startId) {
 337		if (intent != null && intent.getAction() != null) {
 338			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 339				mergePhoneContactsWithRoster();
 340				return START_STICKY;
 341			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 342				logoutAndSave();
 343				return START_NOT_STICKY;
 344			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 345				mNotificationService.clear();
 346			}
 347		}
 348		this.wakeLock.acquire();
 349		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 350				.getSystemService(Context.CONNECTIVITY_SERVICE);
 351		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 352		boolean isConnected = activeNetwork != null
 353				&& activeNetwork.isConnected();
 354
 355		for (Account account : accounts) {
 356			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 357				if (!isConnected) {
 358					account.setStatus(Account.STATUS_NO_INTERNET);
 359					if (statusListener != null) {
 360						statusListener.onStatusChanged(account);
 361					}
 362				} else {
 363					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 364						account.setStatus(Account.STATUS_OFFLINE);
 365						if (statusListener != null) {
 366							statusListener.onStatusChanged(account);
 367						}
 368					}
 369					if (account.getStatus() == Account.STATUS_ONLINE) {
 370						long lastReceived = account.getXmppConnection()
 371								.getLastPacketReceived();
 372						long lastSent = account.getXmppConnection()
 373								.getLastPingSent();
 374						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 375							Log.d(Config.LOGTAG, account.getJid()
 376									+ ": ping timeout");
 377							this.reconnectAccount(account, true);
 378						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 379							account.getXmppConnection().sendPing();
 380							this.scheduleWakeupCall(2, false);
 381						}
 382					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 383						if (account.getXmppConnection() == null) {
 384							account.setXmppConnection(this
 385									.createConnection(account));
 386						}
 387						new Thread(account.getXmppConnection()).start();
 388					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 389							&& ((SystemClock.elapsedRealtime() - account
 390									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 391						Log.d(Config.LOGTAG, account.getJid()
 392								+ ": time out during connect reconnecting");
 393						reconnectAccount(account, true);
 394					} else {
 395						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 396							reconnectAccount(account, true);
 397						}
 398					}
 399					// in any case. reschedule wakup call
 400					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 401				}
 402				if (mOnAccountUpdate != null) {
 403					mOnAccountUpdate.onAccountUpdate();
 404				}
 405			}
 406		}
 407		if (wakeLock.isHeld()) {
 408			try {
 409				wakeLock.release();
 410			} catch (RuntimeException re) {
 411			}
 412		}
 413		return START_STICKY;
 414	}
 415
 416	@SuppressLint("TrulyRandom")
 417	@Override
 418	public void onCreate() {
 419		ExceptionHelper.init(getApplicationContext());
 420		PRNGFixes.apply();
 421		this.mRandom = new SecureRandom();
 422		this.mMemorizingTrustManager = new MemorizingTrustManager(
 423				getApplicationContext());
 424		this.mNotificationService = new NotificationService(this);
 425		this.databaseBackend = DatabaseBackend
 426				.getInstance(getApplicationContext());
 427		this.fileBackend = new FileBackend(getApplicationContext());
 428		this.accounts = databaseBackend.getAccounts();
 429
 430		for (Account account : this.accounts) {
 431			this.databaseBackend.readRoster(account.getRoster());
 432		}
 433		this.mergePhoneContactsWithRoster();
 434		this.getConversations();
 435
 436		getContentResolver().registerContentObserver(
 437				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 438		this.fileObserver.startWatching();
 439		this.pgpServiceConnection = new OpenPgpServiceConnection(
 440				getApplicationContext(), "org.sufficientlysecure.keychain");
 441		this.pgpServiceConnection.bindToService();
 442
 443		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 444		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 445				"XmppConnectionService");
 446	}
 447
 448	@Override
 449	public void onDestroy() {
 450		super.onDestroy();
 451		this.logoutAndSave();
 452	}
 453
 454	@Override
 455	public void onTaskRemoved(Intent rootIntent) {
 456		super.onTaskRemoved(rootIntent);
 457		this.logoutAndSave();
 458	}
 459
 460	private void logoutAndSave() {
 461		for (Account account : accounts) {
 462			databaseBackend.writeRoster(account.getRoster());
 463			if (account.getXmppConnection() != null) {
 464				disconnect(account, false);
 465			}
 466		}
 467		Context context = getApplicationContext();
 468		AlarmManager alarmManager = (AlarmManager) context
 469				.getSystemService(Context.ALARM_SERVICE);
 470		Intent intent = new Intent(context, EventReceiver.class);
 471		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 472		Log.d(Config.LOGTAG, "good bye");
 473		stopSelf();
 474	}
 475
 476	protected void scheduleWakeupCall(int seconds, boolean ping) {
 477		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 478		Context context = getApplicationContext();
 479		AlarmManager alarmManager = (AlarmManager) context
 480				.getSystemService(Context.ALARM_SERVICE);
 481
 482		if (ping) {
 483			if (this.pingIntent == null) {
 484				this.pingIntent = new Intent(context, EventReceiver.class);
 485				this.pingIntent.setAction("ping");
 486				this.pingIntent.putExtra("time", timeToWake);
 487				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 488						this.pingIntent, 0);
 489				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 490						timeToWake, pendingPingIntent);
 491			} else {
 492				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 493				if (scheduledTime < SystemClock.elapsedRealtime()
 494						|| (scheduledTime > timeToWake)) {
 495					this.pingIntent.putExtra("time", timeToWake);
 496					alarmManager.cancel(this.pendingPingIntent);
 497					this.pendingPingIntent = PendingIntent.getBroadcast(
 498							context, 0, this.pingIntent, 0);
 499					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 500							timeToWake, pendingPingIntent);
 501				}
 502			}
 503		} else {
 504			Intent intent = new Intent(context, EventReceiver.class);
 505			intent.setAction("ping_check");
 506			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 507					intent, 0);
 508			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 509					alarmIntent);
 510		}
 511
 512	}
 513
 514	public XmppConnection createConnection(Account account) {
 515		SharedPreferences sharedPref = getPreferences();
 516		account.setResource(sharedPref.getString("resource", "mobile")
 517				.toLowerCase(Locale.getDefault()));
 518		XmppConnection connection = new XmppConnection(account, this);
 519		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 520		connection.setOnStatusChangedListener(this.statusListener);
 521		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 522		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 523		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 524		connection.setOnBindListener(this.mOnBindListener);
 525		connection
 526				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 527		return connection;
 528	}
 529
 530	synchronized public void sendMessage(Message message) {
 531		Account account = message.getConversation().getAccount();
 532		Conversation conv = message.getConversation();
 533		MessagePacket packet = null;
 534		boolean saveInDb = true;
 535		boolean send = false;
 536		if (account.getStatus() == Account.STATUS_ONLINE
 537				&& account.getXmppConnection() != null) {
 538			if (message.getType() == Message.TYPE_IMAGE) {
 539				if (message.getPresence() != null) {
 540					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 541						if (!conv.hasValidOtrSession()
 542								&& (message.getPresence() != null)) {
 543							conv.startOtrSession(this, message.getPresence(),
 544									true);
 545							message.setStatus(Message.STATUS_WAITING);
 546						} else if (conv.hasValidOtrSession()
 547								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 548							mJingleConnectionManager
 549									.createNewConnection(message);
 550						} else if (message.getPresence() == null) {
 551							message.setStatus(Message.STATUS_WAITING);
 552						}
 553					} else {
 554						mJingleConnectionManager.createNewConnection(message);
 555					}
 556				} else {
 557					message.setStatus(Message.STATUS_WAITING);
 558				}
 559			} else {
 560				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 561					if (!conv.hasValidOtrSession()
 562							&& (message.getPresence() != null)) {
 563						conv.startOtrSession(this, message.getPresence(), true);
 564						message.setStatus(Message.STATUS_WAITING);
 565					} else if (conv.hasValidOtrSession()
 566							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 567						message.setPresence(conv.getOtrSession().getSessionID()
 568								.getUserID());
 569						packet = mMessageGenerator.generateOtrChat(message);
 570						send = true;
 571
 572					} else if (message.getPresence() == null) {
 573						message.setStatus(Message.STATUS_WAITING);
 574					}
 575				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 576					message.getConversation().endOtrIfNeeded();
 577					failWaitingOtrMessages(message.getConversation());
 578					packet = mMessageGenerator.generatePgpChat(message);
 579					send = true;
 580				} else {
 581					message.getConversation().endOtrIfNeeded();
 582					failWaitingOtrMessages(message.getConversation());
 583					packet = mMessageGenerator.generateChat(message);
 584					send = true;
 585				}
 586			}
 587			if (!account.getXmppConnection().getFeatures().sm()
 588					&& conv.getMode() != Conversation.MODE_MULTI) {
 589				message.setStatus(Message.STATUS_SEND);
 590			}
 591		} else {
 592			message.setStatus(Message.STATUS_WAITING);
 593			if (message.getType() == Message.TYPE_TEXT) {
 594				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 595					String pgpBody = message.getEncryptedBody();
 596					String decryptedBody = message.getBody();
 597					message.setBody(pgpBody);
 598					message.setEncryption(Message.ENCRYPTION_PGP);
 599					databaseBackend.createMessage(message);
 600					saveInDb = false;
 601					message.setBody(decryptedBody);
 602					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 603				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 604					if (conv.hasValidOtrSession()) {
 605						message.setPresence(conv.getOtrSession().getSessionID()
 606								.getUserID());
 607					} else if (!conv.hasValidOtrSession()
 608							&& message.getPresence() != null) {
 609						conv.startOtrSession(this, message.getPresence(), false);
 610					}
 611				}
 612			}
 613
 614		}
 615		conv.getMessages().add(message);
 616		if (saveInDb) {
 617			if (message.getEncryption() == Message.ENCRYPTION_NONE
 618					|| saveEncryptedMessages()) {
 619				databaseBackend.createMessage(message);
 620			}
 621		}
 622		if ((send) && (packet != null)) {
 623			sendMessagePacket(account, packet);
 624		}
 625		updateConversationUi();
 626	}
 627
 628	private void sendUnsendMessages(Conversation conversation) {
 629		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 630			int status = conversation.getMessages().get(i).getStatus();
 631			if (status == Message.STATUS_WAITING) {
 632				resendMessage(conversation.getMessages().get(i));
 633			}
 634		}
 635	}
 636
 637	private void resendMessage(Message message) {
 638		Account account = message.getConversation().getAccount();
 639		MessagePacket packet = null;
 640		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 641			Presences presences = message.getConversation().getContact()
 642					.getPresences();
 643			if (!message.getConversation().hasValidOtrSession()) {
 644				if ((message.getPresence() != null)
 645						&& (presences.has(message.getPresence()))) {
 646					message.getConversation().startOtrSession(this,
 647							message.getPresence(), true);
 648				} else {
 649					if (presences.size() == 1) {
 650						String presence = presences.asStringArray()[0];
 651						message.getConversation().startOtrSession(this,
 652								presence, true);
 653					}
 654				}
 655			} else {
 656				if (message.getConversation().getOtrSession()
 657						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 658					if (message.getType() == Message.TYPE_TEXT) {
 659						packet = mMessageGenerator.generateOtrChat(message,
 660								true);
 661					} else if (message.getType() == Message.TYPE_IMAGE) {
 662						mJingleConnectionManager.createNewConnection(message);
 663					}
 664				}
 665			}
 666		} else if (message.getType() == Message.TYPE_TEXT) {
 667			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 668				packet = mMessageGenerator.generateChat(message, true);
 669			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 670					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 671				packet = mMessageGenerator.generatePgpChat(message, true);
 672			}
 673		} else if (message.getType() == Message.TYPE_IMAGE) {
 674			Presences presences = message.getConversation().getContact()
 675					.getPresences();
 676			if ((message.getPresence() != null)
 677					&& (presences.has(message.getPresence()))) {
 678				markMessage(message, Message.STATUS_OFFERED);
 679				mJingleConnectionManager.createNewConnection(message);
 680			} else {
 681				if (presences.size() == 1) {
 682					String presence = presences.asStringArray()[0];
 683					message.setPresence(presence);
 684					markMessage(message, Message.STATUS_OFFERED);
 685					mJingleConnectionManager.createNewConnection(message);
 686				}
 687			}
 688		}
 689		if (packet != null) {
 690			if (!account.getXmppConnection().getFeatures().sm()
 691					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 692				markMessage(message, Message.STATUS_SEND);
 693			} else {
 694				markMessage(message, Message.STATUS_UNSEND);
 695			}
 696			sendMessagePacket(account, packet);
 697		}
 698	}
 699
 700	public void fetchRosterFromServer(Account account) {
 701		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 702		if (!"".equals(account.getRosterVersion())) {
 703			Log.d(Config.LOGTAG, account.getJid()
 704					+ ": fetching roster version " + account.getRosterVersion());
 705		} else {
 706			Log.d(Config.LOGTAG, account.getJid() + ": fetching roster");
 707		}
 708		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 709				account.getRosterVersion());
 710		account.getXmppConnection().sendIqPacket(iqPacket,
 711				new OnIqPacketReceived() {
 712
 713					@Override
 714					public void onIqPacketReceived(final Account account,
 715							IqPacket packet) {
 716						Element query = packet.findChild("query");
 717						if (query != null) {
 718							account.getRoster().markAllAsNotInRoster();
 719							mIqParser.rosterItems(account, query);
 720						}
 721					}
 722				});
 723	}
 724
 725	public void fetchBookmarks(Account account) {
 726		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 727		Element query = iqPacket.query("jabber:iq:private");
 728		query.addChild("storage", "storage:bookmarks");
 729		OnIqPacketReceived callback = new OnIqPacketReceived() {
 730
 731			@Override
 732			public void onIqPacketReceived(Account account, IqPacket packet) {
 733				Element query = packet.query();
 734				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 735				Element storage = query.findChild("storage",
 736						"storage:bookmarks");
 737				if (storage != null) {
 738					for (Element item : storage.getChildren()) {
 739						if (item.getName().equals("conference")) {
 740							Bookmark bookmark = Bookmark.parse(item, account);
 741							bookmarks.add(bookmark);
 742							Conversation conversation = find(bookmark);
 743							if (conversation != null) {
 744								conversation.setBookmark(bookmark);
 745							} else {
 746								if (bookmark.autojoin()) {
 747									conversation = findOrCreateConversation(
 748											account, bookmark.getJid(), true);
 749									conversation.setBookmark(bookmark);
 750									joinMuc(conversation);
 751								}
 752							}
 753						}
 754					}
 755				}
 756				account.setBookmarks(bookmarks);
 757			}
 758		};
 759		sendIqPacket(account, iqPacket, callback);
 760
 761	}
 762
 763	public void pushBookmarks(Account account) {
 764		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 765		Element query = iqPacket.query("jabber:iq:private");
 766		Element storage = query.addChild("storage", "storage:bookmarks");
 767		for (Bookmark bookmark : account.getBookmarks()) {
 768			storage.addChild(bookmark);
 769		}
 770		sendIqPacket(account, iqPacket, null);
 771	}
 772
 773	private void mergePhoneContactsWithRoster() {
 774		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 775				new OnPhoneContactsLoadedListener() {
 776					@Override
 777					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 778						for (Account account : accounts) {
 779							account.getRoster().clearSystemAccounts();
 780						}
 781						for (Bundle phoneContact : phoneContacts) {
 782							for (Account account : accounts) {
 783								String jid = phoneContact.getString("jid");
 784								Contact contact = account.getRoster()
 785										.getContact(jid);
 786								String systemAccount = phoneContact
 787										.getInt("phoneid")
 788										+ "#"
 789										+ phoneContact.getString("lookup");
 790								contact.setSystemAccount(systemAccount);
 791								contact.setPhotoUri(phoneContact
 792										.getString("photouri"));
 793								contact.setSystemName(phoneContact
 794										.getString("displayname"));
 795							}
 796						}
 797					}
 798				});
 799	}
 800
 801	public List<Conversation> getConversations() {
 802		if (this.conversations == null) {
 803			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 804			for (Account account : this.accounts) {
 805				accountLookupTable.put(account.getUuid(), account);
 806			}
 807			this.conversations = databaseBackend
 808					.getConversations(Conversation.STATUS_AVAILABLE);
 809			for (Conversation conv : this.conversations) {
 810				Account account = accountLookupTable.get(conv.getAccountUuid());
 811				conv.setAccount(account);
 812				conv.setMessages(databaseBackend.getMessages(conv, 50));
 813				checkDeletedFiles(conv);
 814			}
 815		}
 816		return this.conversations;
 817	}
 818	
 819	private void checkDeletedFiles(Conversation conversation) {
 820		for(Message message : conversation.getMessages()) {
 821			if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP) {
 822				if (!getFileBackend().isFileAvailable(message)) {
 823					message.setDownloadable(new DeletedDownloadable());
 824				}
 825			}
 826		}
 827	}
 828	
 829	private void markFileDeleted(String uuid) {
 830		for(Conversation conversation : getConversations()) {
 831			for(Message message : conversation.getMessages()) {
 832				if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getUuid().equals(uuid)) {
 833					if (!getFileBackend().isFileAvailable(message)) {
 834						message.setDownloadable(new DeletedDownloadable());
 835						updateConversationUi();
 836					}
 837					return;
 838				}
 839			}
 840		}
 841	}
 842
 843	public void populateWithOrderedConversations(List<Conversation> list) {
 844		populateWithOrderedConversations(list, true);
 845	}
 846
 847	public void populateWithOrderedConversations(List<Conversation> list,
 848			boolean includeConferences) {
 849		list.clear();
 850		if (includeConferences) {
 851			list.addAll(getConversations());
 852		} else {
 853			for (Conversation conversation : getConversations()) {
 854				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 855					list.add(conversation);
 856				}
 857			}
 858		}
 859		Collections.sort(list, new Comparator<Conversation>() {
 860			@Override
 861			public int compare(Conversation lhs, Conversation rhs) {
 862				Message left = lhs.getLatestMessage();
 863				Message right = rhs.getLatestMessage();
 864				if (left.getTimeSent() > right.getTimeSent()) {
 865					return -1;
 866				} else if (left.getTimeSent() < right.getTimeSent()) {
 867					return 1;
 868				} else {
 869					return 0;
 870				}
 871			}
 872		});
 873	}
 874
 875	public int loadMoreMessages(Conversation conversation, long timestamp) {
 876		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 877				timestamp);
 878		for (Message message : messages) {
 879			message.setConversation(conversation);
 880		}
 881		conversation.getMessages().addAll(0, messages);
 882		return messages.size();
 883	}
 884
 885	public List<Account> getAccounts() {
 886		return this.accounts;
 887	}
 888
 889	public Conversation find(List<Conversation> haystack, Contact contact) {
 890		for (Conversation conversation : haystack) {
 891			if (conversation.getContact() == contact) {
 892				return conversation;
 893			}
 894		}
 895		return null;
 896	}
 897
 898	public Conversation find(List<Conversation> haystack, Account account,
 899			String jid) {
 900		for (Conversation conversation : haystack) {
 901			if ((account == null || conversation.getAccount().equals(account))
 902					&& (conversation.getContactJid().split("/", 2)[0]
 903							.equals(jid))) {
 904				return conversation;
 905			}
 906		}
 907		return null;
 908	}
 909
 910	public Conversation findOrCreateConversation(Account account, String jid,
 911			boolean muc) {
 912		Conversation conversation = find(account, jid);
 913		if (conversation != null) {
 914			return conversation;
 915		}
 916		conversation = databaseBackend.findConversation(account, jid);
 917		if (conversation != null) {
 918			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 919			conversation.setAccount(account);
 920			if (muc) {
 921				conversation.setMode(Conversation.MODE_MULTI);
 922			} else {
 923				conversation.setMode(Conversation.MODE_SINGLE);
 924			}
 925			conversation.setMessages(databaseBackend.getMessages(conversation,
 926					50));
 927			this.databaseBackend.updateConversation(conversation);
 928		} else {
 929			String conversationName;
 930			Contact contact = account.getRoster().getContact(jid);
 931			if (contact != null) {
 932				conversationName = contact.getDisplayName();
 933			} else {
 934				conversationName = jid.split("@")[0];
 935			}
 936			if (muc) {
 937				conversation = new Conversation(conversationName, account, jid,
 938						Conversation.MODE_MULTI);
 939			} else {
 940				conversation = new Conversation(conversationName, account, jid,
 941						Conversation.MODE_SINGLE);
 942			}
 943			this.databaseBackend.createConversation(conversation);
 944		}
 945		this.conversations.add(conversation);
 946		updateConversationUi();
 947		return conversation;
 948	}
 949
 950	public void archiveConversation(Conversation conversation) {
 951		if (conversation.getMode() == Conversation.MODE_MULTI) {
 952			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
 953				Bookmark bookmark = conversation.getBookmark();
 954				if (bookmark != null && bookmark.autojoin()) {
 955					bookmark.setAutojoin(false);
 956					pushBookmarks(bookmark.getAccount());
 957				}
 958			}
 959			leaveMuc(conversation);
 960		} else {
 961			conversation.endOtrIfNeeded();
 962		}
 963		this.databaseBackend.updateConversation(conversation);
 964		this.conversations.remove(conversation);
 965		updateConversationUi();
 966	}
 967
 968	public void clearConversationHistory(Conversation conversation) {
 969		this.databaseBackend.deleteMessagesInConversation(conversation);
 970		this.fileBackend.removeFiles(conversation);
 971		conversation.getMessages().clear();
 972		updateConversationUi();
 973	}
 974
 975	public int getConversationCount() {
 976		return this.databaseBackend.getConversationCount();
 977	}
 978
 979	public void createAccount(Account account) {
 980		databaseBackend.createAccount(account);
 981		this.accounts.add(account);
 982		this.reconnectAccount(account, false);
 983		updateAccountUi();
 984	}
 985
 986	public void updateAccount(Account account) {
 987		this.statusListener.onStatusChanged(account);
 988		databaseBackend.updateAccount(account);
 989		reconnectAccount(account, false);
 990		updateAccountUi();
 991		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 992	}
 993
 994	public void deleteAccount(Account account) {
 995		for (Conversation conversation : conversations) {
 996			if (conversation.getAccount() == account) {
 997				if (conversation.getMode() == Conversation.MODE_MULTI) {
 998					leaveMuc(conversation);
 999				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1000					conversation.endOtrIfNeeded();
1001				}
1002				conversations.remove(conversation);
1003			}
1004		}
1005		if (account.getXmppConnection() != null) {
1006			this.disconnect(account, true);
1007		}
1008		databaseBackend.deleteAccount(account);
1009		this.accounts.remove(account);
1010		updateAccountUi();
1011		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1012	}
1013
1014	public void setOnConversationListChangedListener(
1015			OnConversationUpdate listener) {
1016		if (!isScreenOn()) {
1017			Log.d(Config.LOGTAG,
1018					"ignoring setOnConversationListChangedListener");
1019			return;
1020		}
1021		synchronized (this.convChangedListenerCount) {
1022			this.mNotificationService.deactivateGracePeriod();
1023			if (checkListeners()) {
1024				switchToForeground();
1025			}
1026			this.mOnConversationUpdate = listener;
1027			this.mNotificationService.setIsInForeground(true);
1028			this.convChangedListenerCount++;
1029		}
1030	}
1031
1032	public void removeOnConversationListChangedListener() {
1033		synchronized (this.convChangedListenerCount) {
1034			this.convChangedListenerCount--;
1035			if (this.convChangedListenerCount <= 0) {
1036				this.convChangedListenerCount = 0;
1037				this.mOnConversationUpdate = null;
1038				this.mNotificationService.setIsInForeground(false);
1039				if (checkListeners()) {
1040					switchToBackground();
1041				}
1042			}
1043		}
1044	}
1045
1046	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1047		if (!isScreenOn()) {
1048			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1049			return;
1050		}
1051		synchronized (this.accountChangedListenerCount) {
1052			this.mNotificationService.deactivateGracePeriod();
1053			if (checkListeners()) {
1054				switchToForeground();
1055			}
1056			this.mOnAccountUpdate = listener;
1057			this.accountChangedListenerCount++;
1058		}
1059	}
1060
1061	public void removeOnAccountListChangedListener() {
1062		synchronized (this.accountChangedListenerCount) {
1063			this.accountChangedListenerCount--;
1064			if (this.accountChangedListenerCount <= 0) {
1065				this.mOnAccountUpdate = null;
1066				this.accountChangedListenerCount = 0;
1067				if (checkListeners()) {
1068					switchToBackground();
1069				}
1070			}
1071		}
1072	}
1073
1074	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1075		if (!isScreenOn()) {
1076			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1077			return;
1078		}
1079		synchronized (this.rosterChangedListenerCount) {
1080			this.mNotificationService.deactivateGracePeriod();
1081			if (checkListeners()) {
1082				switchToForeground();
1083			}
1084			this.mOnRosterUpdate = listener;
1085			this.rosterChangedListenerCount++;
1086		}
1087	}
1088
1089	public void removeOnRosterUpdateListener() {
1090		synchronized (this.rosterChangedListenerCount) {
1091			this.rosterChangedListenerCount--;
1092			if (this.rosterChangedListenerCount <= 0) {
1093				this.rosterChangedListenerCount = 0;
1094				this.mOnRosterUpdate = null;
1095				if (checkListeners()) {
1096					switchToBackground();
1097				}
1098			}
1099		}
1100	}
1101
1102	private boolean checkListeners() {
1103		return (this.mOnAccountUpdate == null
1104				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1105	}
1106
1107	private void switchToForeground() {
1108		for (Account account : getAccounts()) {
1109			if (account.getStatus() == Account.STATUS_ONLINE) {
1110				XmppConnection connection = account.getXmppConnection();
1111				if (connection != null && connection.getFeatures().csi()) {
1112					connection.sendActive();
1113				}
1114			}
1115		}
1116		Log.d(Config.LOGTAG,"app switched into foreground");
1117	}
1118
1119	private void switchToBackground() {
1120		for (Account account : getAccounts()) {
1121			if (account.getStatus() == Account.STATUS_ONLINE) {
1122				XmppConnection connection = account.getXmppConnection();
1123				if (connection != null && connection.getFeatures().csi()) {
1124					connection.sendInactive();
1125				}
1126			}
1127		}
1128		this.mNotificationService.setIsInForeground(false);
1129		Log.d(Config.LOGTAG,"app switched into background");
1130	}
1131
1132	private boolean isScreenOn() {
1133		PowerManager pm = (PowerManager) this
1134				.getSystemService(Context.POWER_SERVICE);
1135		return pm.isScreenOn();
1136	}
1137
1138	public void connectMultiModeConversations(Account account) {
1139		List<Conversation> conversations = getConversations();
1140		for (int i = 0; i < conversations.size(); i++) {
1141			Conversation conversation = conversations.get(i);
1142			if ((conversation.getMode() == Conversation.MODE_MULTI)
1143					&& (conversation.getAccount() == account)) {
1144				joinMuc(conversation);
1145			}
1146		}
1147	}
1148
1149	public void joinMuc(Conversation conversation) {
1150		Account account = conversation.getAccount();
1151		account.pendingConferenceJoins.remove(conversation);
1152		account.pendingConferenceLeaves.remove(conversation);
1153		if (account.getStatus() == Account.STATUS_ONLINE) {
1154			Log.d(Config.LOGTAG,
1155					"joining conversation " + conversation.getContactJid());
1156			String nick = conversation.getMucOptions().getProposedNick();
1157			conversation.getMucOptions().setJoinNick(nick);
1158			PresencePacket packet = new PresencePacket();
1159			String joinJid = conversation.getMucOptions().getJoinJid();
1160			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1161			Element x = new Element("x");
1162			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1163			if (conversation.getMucOptions().getPassword() != null) {
1164				Element password = x.addChild("password");
1165				password.setContent(conversation.getMucOptions().getPassword());
1166			}
1167			String sig = account.getPgpSignature();
1168			if (sig != null) {
1169				packet.addChild("status").setContent("online");
1170				packet.addChild("x", "jabber:x:signed").setContent(sig);
1171			}
1172			if (conversation.getMessages().size() != 0) {
1173				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1174						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1175				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1176				Date date = new Date(conversation.getLatestMessage()
1177						.getTimeSent() + 1000);
1178				x.addChild("history").setAttribute("since",
1179						mDateFormat.format(date));
1180			}
1181			packet.addChild(x);
1182			sendPresencePacket(account, packet);
1183			if (!joinJid.equals(conversation.getContactJid())) {
1184				conversation.setContactJid(joinJid);
1185				databaseBackend.updateConversation(conversation);
1186			}
1187		} else {
1188			account.pendingConferenceJoins.add(conversation);
1189		}
1190	}
1191
1192	private OnRenameListener renameListener = null;
1193	private IqGenerator mIqGenerator = new IqGenerator(this);
1194
1195	public void setOnRenameListener(OnRenameListener listener) {
1196		this.renameListener = listener;
1197	}
1198
1199	public void providePasswordForMuc(Conversation conversation, String password) {
1200		if (conversation.getMode() == Conversation.MODE_MULTI) {
1201			conversation.getMucOptions().setPassword(password);
1202			if (conversation.getBookmark() != null) {
1203				conversation.getBookmark().setAutojoin(true);
1204				pushBookmarks(conversation.getAccount());
1205			}
1206			databaseBackend.updateConversation(conversation);
1207			joinMuc(conversation);
1208		}
1209	}
1210
1211	public void renameInMuc(final Conversation conversation, final String nick) {
1212		final MucOptions options = conversation.getMucOptions();
1213		options.setJoinNick(nick);
1214		if (options.online()) {
1215			Account account = conversation.getAccount();
1216			options.setOnRenameListener(new OnRenameListener() {
1217
1218				@Override
1219				public void onRename(boolean success) {
1220					if (renameListener != null) {
1221						renameListener.onRename(success);
1222					}
1223					if (success) {
1224						conversation.setContactJid(conversation.getMucOptions()
1225								.getJoinJid());
1226						databaseBackend.updateConversation(conversation);
1227						Bookmark bookmark = conversation.getBookmark();
1228						if (bookmark != null) {
1229							bookmark.setNick(nick);
1230							pushBookmarks(bookmark.getAccount());
1231						}
1232					}
1233				}
1234			});
1235			options.flagAboutToRename();
1236			PresencePacket packet = new PresencePacket();
1237			packet.setAttribute("to", options.getJoinJid());
1238			packet.setAttribute("from", conversation.getAccount().getFullJid());
1239
1240			String sig = account.getPgpSignature();
1241			if (sig != null) {
1242				packet.addChild("status").setContent("online");
1243				packet.addChild("x", "jabber:x:signed").setContent(sig);
1244			}
1245			sendPresencePacket(account, packet);
1246		} else {
1247			conversation.setContactJid(options.getJoinJid());
1248			databaseBackend.updateConversation(conversation);
1249			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1250				Bookmark bookmark = conversation.getBookmark();
1251				if (bookmark != null) {
1252					bookmark.setNick(nick);
1253					pushBookmarks(bookmark.getAccount());
1254				}
1255				joinMuc(conversation);
1256			}
1257		}
1258	}
1259
1260	public void leaveMuc(Conversation conversation) {
1261		Account account = conversation.getAccount();
1262		account.pendingConferenceJoins.remove(conversation);
1263		account.pendingConferenceLeaves.remove(conversation);
1264		if (account.getStatus() == Account.STATUS_ONLINE) {
1265			PresencePacket packet = new PresencePacket();
1266			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1267			packet.setAttribute("from", conversation.getAccount().getFullJid());
1268			packet.setAttribute("type", "unavailable");
1269			sendPresencePacket(conversation.getAccount(), packet);
1270			conversation.getMucOptions().setOffline();
1271			conversation.deregisterWithBookmark();
1272			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1273					+ ": leaving muc " + conversation.getContactJid());
1274		} else {
1275			account.pendingConferenceLeaves.add(conversation);
1276		}
1277	}
1278
1279	public void disconnect(Account account, boolean force) {
1280		if ((account.getStatus() == Account.STATUS_ONLINE)
1281				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1282			if (!force) {
1283				List<Conversation> conversations = getConversations();
1284				for (int i = 0; i < conversations.size(); i++) {
1285					Conversation conversation = conversations.get(i);
1286					if (conversation.getAccount() == account) {
1287						if (conversation.getMode() == Conversation.MODE_MULTI) {
1288							leaveMuc(conversation);
1289						} else {
1290							if (conversation.endOtrIfNeeded()) {
1291								Log.d(Config.LOGTAG,account.getJid()+": ended otr session with "+conversation.getContactJid());
1292							}
1293						}
1294					}
1295				}
1296			}
1297			account.getXmppConnection().disconnect(force);
1298		}
1299	}
1300
1301	@Override
1302	public IBinder onBind(Intent intent) {
1303		return mBinder;
1304	}
1305
1306	public void updateMessage(Message message) {
1307		databaseBackend.updateMessage(message);
1308		updateConversationUi();
1309	}
1310
1311	protected void syncDirtyContacts(Account account) {
1312		for (Contact contact : account.getRoster().getContacts()) {
1313			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1314				pushContactToServer(contact);
1315			}
1316			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1317				deleteContactOnServer(contact);
1318			}
1319		}
1320	}
1321
1322	public void createContact(Contact contact) {
1323		SharedPreferences sharedPref = getPreferences();
1324		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1325		if (autoGrant) {
1326			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1327			contact.setOption(Contact.Options.ASKING);
1328		}
1329		pushContactToServer(contact);
1330	}
1331
1332	public void onOtrSessionEstablished(Conversation conversation) {
1333		Account account = conversation.getAccount();
1334		List<Message> messages = conversation.getMessages();
1335		Session otrSession = conversation.getOtrSession();
1336		Log.d(Config.LOGTAG,
1337				account.getJid() + " otr session established with "
1338						+ conversation.getContactJid() + "/"
1339						+ otrSession.getSessionID().getUserID());
1340		for (int i = 0; i < messages.size(); ++i) {
1341			Message msg = messages.get(i);
1342			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1343					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1344				msg.setPresence(otrSession.getSessionID().getUserID());
1345				if (msg.getType() == Message.TYPE_TEXT) {
1346					MessagePacket outPacket = mMessageGenerator
1347							.generateOtrChat(msg, true);
1348					if (outPacket != null) {
1349						msg.setStatus(Message.STATUS_SEND);
1350						databaseBackend.updateMessage(msg);
1351						sendMessagePacket(account, outPacket);
1352					}
1353				} else if (msg.getType() == Message.TYPE_IMAGE) {
1354					mJingleConnectionManager.createNewConnection(msg);
1355				}
1356			}
1357		}
1358		updateConversationUi();
1359	}
1360
1361	public boolean renewSymmetricKey(Conversation conversation) {
1362		Account account = conversation.getAccount();
1363		byte[] symmetricKey = new byte[32];
1364		this.mRandom.nextBytes(symmetricKey);
1365		Session otrSession = conversation.getOtrSession();
1366		if (otrSession != null) {
1367			MessagePacket packet = new MessagePacket();
1368			packet.setType(MessagePacket.TYPE_CHAT);
1369			packet.setFrom(account.getFullJid());
1370			packet.addChild("private", "urn:xmpp:carbons:2");
1371			packet.addChild("no-copy", "urn:xmpp:hints");
1372			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1373					+ otrSession.getSessionID().getUserID());
1374			try {
1375				packet.setBody(otrSession
1376						.transformSending(CryptoHelper.FILETRANSFER
1377								+ CryptoHelper.bytesToHex(symmetricKey)));
1378				sendMessagePacket(account, packet);
1379				conversation.setSymmetricKey(symmetricKey);
1380				return true;
1381			} catch (OtrException e) {
1382				return false;
1383			}
1384		}
1385		return false;
1386	}
1387
1388	public void pushContactToServer(Contact contact) {
1389		contact.resetOption(Contact.Options.DIRTY_DELETE);
1390		contact.setOption(Contact.Options.DIRTY_PUSH);
1391		Account account = contact.getAccount();
1392		if (account.getStatus() == Account.STATUS_ONLINE) {
1393			boolean ask = contact.getOption(Contact.Options.ASKING);
1394			boolean sendUpdates = contact
1395					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1396					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1397			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1398			iq.query("jabber:iq:roster").addChild(contact.asElement());
1399			account.getXmppConnection().sendIqPacket(iq, null);
1400			if (sendUpdates) {
1401				sendPresencePacket(account,
1402						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1403			}
1404			if (ask) {
1405				sendPresencePacket(account,
1406						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1407			}
1408		}
1409	}
1410
1411	public void publishAvatar(Account account, Uri image,
1412			final UiCallback<Avatar> callback) {
1413		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1414		final int size = Config.AVATAR_SIZE;
1415		final Avatar avatar = getFileBackend()
1416				.getPepAvatar(image, size, format);
1417		if (avatar != null) {
1418			avatar.height = size;
1419			avatar.width = size;
1420			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1421				avatar.type = "image/webp";
1422			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1423				avatar.type = "image/jpeg";
1424			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1425				avatar.type = "image/png";
1426			}
1427			if (!getFileBackend().save(avatar)) {
1428				callback.error(R.string.error_saving_avatar, avatar);
1429				return;
1430			}
1431			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1432			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1433
1434				@Override
1435				public void onIqPacketReceived(Account account, IqPacket result) {
1436					if (result.getType() == IqPacket.TYPE_RESULT) {
1437						IqPacket packet = XmppConnectionService.this.mIqGenerator
1438								.publishAvatarMetadata(avatar);
1439						sendIqPacket(account, packet, new OnIqPacketReceived() {
1440
1441							@Override
1442							public void onIqPacketReceived(Account account,
1443									IqPacket result) {
1444								if (result.getType() == IqPacket.TYPE_RESULT) {
1445									if (account.setAvatar(avatar.getFilename())) {
1446										databaseBackend.updateAccount(account);
1447									}
1448									callback.success(avatar);
1449								} else {
1450									callback.error(
1451											R.string.error_publish_avatar_server_reject,
1452											avatar);
1453								}
1454							}
1455						});
1456					} else {
1457						callback.error(
1458								R.string.error_publish_avatar_server_reject,
1459								avatar);
1460					}
1461				}
1462			});
1463		} else {
1464			callback.error(R.string.error_publish_avatar_converting, null);
1465		}
1466	}
1467
1468	public void fetchAvatar(Account account, Avatar avatar) {
1469		fetchAvatar(account, avatar, null);
1470	}
1471
1472	public void fetchAvatar(Account account, final Avatar avatar,
1473			final UiCallback<Avatar> callback) {
1474		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1475		sendIqPacket(account, packet, new OnIqPacketReceived() {
1476
1477			@Override
1478			public void onIqPacketReceived(Account account, IqPacket result) {
1479				final String ERROR = account.getJid()
1480						+ ": fetching avatar for " + avatar.owner + " failed ";
1481				if (result.getType() == IqPacket.TYPE_RESULT) {
1482					avatar.image = mIqParser.avatarData(result);
1483					if (avatar.image != null) {
1484						if (getFileBackend().save(avatar)) {
1485							if (account.getJid().equals(avatar.owner)) {
1486								if (account.setAvatar(avatar.getFilename())) {
1487									databaseBackend.updateAccount(account);
1488								}
1489							} else {
1490								Contact contact = account.getRoster()
1491										.getContact(avatar.owner);
1492								contact.setAvatar(avatar.getFilename());
1493							}
1494							if (callback != null) {
1495								callback.success(avatar);
1496							}
1497							Log.d(Config.LOGTAG, account.getJid()
1498									+ ": succesfully fetched avatar for "
1499									+ avatar.owner);
1500							return;
1501						}
1502					} else {
1503
1504						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1505					}
1506				} else {
1507					Element error = result.findChild("error");
1508					if (error == null) {
1509						Log.d(Config.LOGTAG, ERROR + "(server error)");
1510					} else {
1511						Log.d(Config.LOGTAG, ERROR + error.toString());
1512					}
1513				}
1514				if (callback != null) {
1515					callback.error(0, null);
1516				}
1517
1518			}
1519		});
1520	}
1521
1522	public void checkForAvatar(Account account,
1523			final UiCallback<Avatar> callback) {
1524		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1525		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1526
1527			@Override
1528			public void onIqPacketReceived(Account account, IqPacket packet) {
1529				if (packet.getType() == IqPacket.TYPE_RESULT) {
1530					Element pubsub = packet.findChild("pubsub",
1531							"http://jabber.org/protocol/pubsub");
1532					if (pubsub != null) {
1533						Element items = pubsub.findChild("items");
1534						if (items != null) {
1535							Avatar avatar = Avatar.parseMetadata(items);
1536							if (avatar != null) {
1537								avatar.owner = account.getJid();
1538								if (fileBackend.isAvatarCached(avatar)) {
1539									if (account.setAvatar(avatar.getFilename())) {
1540										databaseBackend.updateAccount(account);
1541									}
1542									callback.success(avatar);
1543								} else {
1544									fetchAvatar(account, avatar, callback);
1545								}
1546								return;
1547							}
1548						}
1549					}
1550				}
1551				callback.error(0, null);
1552			}
1553		});
1554	}
1555
1556	public void deleteContactOnServer(Contact contact) {
1557		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1558		contact.resetOption(Contact.Options.DIRTY_PUSH);
1559		contact.setOption(Contact.Options.DIRTY_DELETE);
1560		Account account = contact.getAccount();
1561		if (account.getStatus() == Account.STATUS_ONLINE) {
1562			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1563			Element item = iq.query("jabber:iq:roster").addChild("item");
1564			item.setAttribute("jid", contact.getJid());
1565			item.setAttribute("subscription", "remove");
1566			account.getXmppConnection().sendIqPacket(iq, null);
1567		}
1568	}
1569
1570	public void updateConversation(Conversation conversation) {
1571		this.databaseBackend.updateConversation(conversation);
1572	}
1573
1574	public void reconnectAccount(final Account account, final boolean force) {
1575		new Thread(new Runnable() {
1576
1577			@Override
1578			public void run() {
1579				if (account.getXmppConnection() != null) {
1580					disconnect(account, force);
1581				}
1582				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1583					if (account.getXmppConnection() == null) {
1584						account.setXmppConnection(createConnection(account));
1585					}
1586					Thread thread = new Thread(account.getXmppConnection());
1587					thread.start();
1588					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1589							false);
1590				} else {
1591					account.getRoster().clearPresences();
1592					account.setXmppConnection(null);
1593				}
1594			}
1595		}).start();
1596	}
1597
1598	public void invite(Conversation conversation, String contact) {
1599		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1600		sendMessagePacket(conversation.getAccount(), packet);
1601	}
1602
1603	public void resetSendingToWaiting(Account account) {
1604		for (Conversation conversation : getConversations()) {
1605			if (conversation.getAccount() == account) {
1606				for (Message message : conversation.getMessages()) {
1607					if (message.getType() != Message.TYPE_IMAGE
1608							&& message.getStatus() == Message.STATUS_UNSEND) {
1609						markMessage(message, Message.STATUS_WAITING);
1610					}
1611				}
1612			}
1613		}
1614	}
1615
1616	public boolean markMessage(Account account, String recipient, String uuid,
1617			int status) {
1618		if (uuid == null) {
1619			return false;
1620		} else {
1621			for (Conversation conversation : getConversations()) {
1622				if (conversation.getContactJid().equals(recipient)
1623						&& conversation.getAccount().equals(account)) {
1624					return markMessage(conversation, uuid, status);
1625				}
1626			}
1627			return false;
1628		}
1629	}
1630
1631	public boolean markMessage(Conversation conversation, String uuid,
1632			int status) {
1633		if (uuid == null) {
1634			return false;
1635		} else {
1636			for (Message message : conversation.getMessages()) {
1637				if (uuid.equals(message.getUuid())
1638						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1639								.equals(message.getRemoteMsgId()))) {
1640					markMessage(message, status);
1641					return true;
1642				}
1643			}
1644			return false;
1645		}
1646	}
1647
1648	public void markMessage(Message message, int status) {
1649		if (status == Message.STATUS_SEND_FAILED
1650				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1651						.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1652			return;
1653		}
1654		message.setStatus(status);
1655		databaseBackend.updateMessage(message);
1656		updateConversationUi();
1657	}
1658
1659	public SharedPreferences getPreferences() {
1660		return PreferenceManager
1661				.getDefaultSharedPreferences(getApplicationContext());
1662	}
1663
1664	public boolean forceEncryption() {
1665		return getPreferences().getBoolean("force_encryption", false);
1666	}
1667
1668	public boolean confirmMessages() {
1669		return getPreferences().getBoolean("confirm_messages", true);
1670	}
1671
1672	public boolean saveEncryptedMessages() {
1673		return !getPreferences().getBoolean("dont_save_encrypted", false);
1674	}
1675
1676	public boolean indicateReceived() {
1677		return getPreferences().getBoolean("indicate_received", false);
1678	}
1679
1680	public void updateConversationUi() {
1681		if (mOnConversationUpdate != null) {
1682			mOnConversationUpdate.onConversationUpdate();
1683		}
1684	}
1685
1686	public void updateAccountUi() {
1687		if (mOnAccountUpdate != null) {
1688			mOnAccountUpdate.onAccountUpdate();
1689		}
1690	}
1691
1692	public void updateRosterUi() {
1693		if (mOnRosterUpdate != null) {
1694			mOnRosterUpdate.onRosterUpdate();
1695		}
1696	}
1697
1698	public Account findAccountByJid(String accountJid) {
1699		for (Account account : this.accounts) {
1700			if (account.getJid().equals(accountJid)) {
1701				return account;
1702			}
1703		}
1704		return null;
1705	}
1706
1707	public Conversation findConversationByUuid(String uuid) {
1708		for (Conversation conversation : getConversations()) {
1709			if (conversation.getUuid().equals(uuid)) {
1710				return conversation;
1711			}
1712		}
1713		return null;
1714	}
1715
1716	public void markRead(Conversation conversation, boolean calledByUi) {
1717		mNotificationService.clear(conversation);
1718		String id = conversation.getLatestMarkableMessageId();
1719		conversation.markRead();
1720		if (confirmMessages() && id != null && calledByUi) {
1721			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1722					+ ": sending read marker for " + conversation.getName());
1723			Account account = conversation.getAccount();
1724			String to = conversation.getContactJid();
1725			this.sendMessagePacket(conversation.getAccount(),
1726					mMessageGenerator.confirm(account, to, id));
1727		}
1728		if (!calledByUi) {
1729			updateConversationUi();
1730		}
1731	}
1732
1733	public void failWaitingOtrMessages(Conversation conversation) {
1734		for (Message message : conversation.getMessages()) {
1735			if (message.getEncryption() == Message.ENCRYPTION_OTR
1736					&& message.getStatus() == Message.STATUS_WAITING) {
1737				markMessage(message, Message.STATUS_SEND_FAILED);
1738			}
1739		}
1740	}
1741
1742	public SecureRandom getRNG() {
1743		return this.mRandom;
1744	}
1745
1746	public MemorizingTrustManager getMemorizingTrustManager() {
1747		return this.mMemorizingTrustManager;
1748	}
1749
1750	public PowerManager getPowerManager() {
1751		return this.pm;
1752	}
1753
1754	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1755		if (account.getStatus() == Account.STATUS_ONLINE) {
1756			MessagePacket error = this.mMessageGenerator
1757					.generateNotAcceptable(packet);
1758			sendMessagePacket(account, error);
1759		}
1760	}
1761
1762	public void syncRosterToDisk(final Account account) {
1763		new Thread(new Runnable() {
1764
1765			@Override
1766			public void run() {
1767				databaseBackend.writeRoster(account.getRoster());
1768			}
1769		}).start();
1770
1771	}
1772
1773	public List<String> getKnownHosts() {
1774		List<String> hosts = new ArrayList<String>();
1775		for (Account account : getAccounts()) {
1776			if (!hosts.contains(account.getServer())) {
1777				hosts.add(account.getServer());
1778			}
1779			for (Contact contact : account.getRoster().getContacts()) {
1780				if (contact.showInRoster()) {
1781					String server = contact.getServer();
1782					if (server != null && !hosts.contains(server)) {
1783						hosts.add(server);
1784					}
1785				}
1786			}
1787		}
1788		return hosts;
1789	}
1790
1791	public List<String> getKnownConferenceHosts() {
1792		ArrayList<String> mucServers = new ArrayList<String>();
1793		for (Account account : accounts) {
1794			if (account.getXmppConnection() != null) {
1795				String server = account.getXmppConnection().getMucServer();
1796				if (server != null && !mucServers.contains(server)) {
1797					mucServers.add(server);
1798				}
1799			}
1800		}
1801		return mucServers;
1802	}
1803
1804	public void sendMessagePacket(Account account, MessagePacket packet) {
1805		XmppConnection connection = account.getXmppConnection();
1806		if (connection != null) {
1807			connection.sendMessagePacket(packet);
1808		}
1809	}
1810
1811	public void sendPresencePacket(Account account, PresencePacket packet) {
1812		XmppConnection connection = account.getXmppConnection();
1813		if (connection != null) {
1814			connection.sendPresencePacket(packet);
1815		}
1816	}
1817
1818	public void sendIqPacket(Account account, IqPacket packet,
1819			OnIqPacketReceived callback) {
1820		XmppConnection connection = account.getXmppConnection();
1821		if (connection != null) {
1822			connection.sendIqPacket(packet, callback);
1823		}
1824	}
1825
1826	public MessageGenerator getMessageGenerator() {
1827		return this.mMessageGenerator;
1828	}
1829
1830	public PresenceGenerator getPresenceGenerator() {
1831		return this.mPresenceGenerator;
1832	}
1833
1834	public IqGenerator getIqGenerator() {
1835		return this.mIqGenerator;
1836	}
1837
1838	public JingleConnectionManager getJingleConnectionManager() {
1839		return this.mJingleConnectionManager;
1840	}
1841
1842	public interface OnConversationUpdate {
1843		public void onConversationUpdate();
1844	}
1845
1846	public interface OnAccountUpdate {
1847		public void onAccountUpdate();
1848	}
1849
1850	public interface OnRosterUpdate {
1851		public void onRosterUpdate();
1852	}
1853
1854	public List<Contact> findContacts(String jid) {
1855		ArrayList<Contact> contacts = new ArrayList<Contact>();
1856		for (Account account : getAccounts()) {
1857			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1858				Contact contact = account.getRoster().getContactFromRoster(jid);
1859				if (contact != null) {
1860					contacts.add(contact);
1861				}
1862			}
1863		}
1864		return contacts;
1865	}
1866
1867	public NotificationService getNotificationService() {
1868		return this.mNotificationService;
1869	}
1870
1871	public HttpConnectionManager getHttpConnectionManager() {
1872		return this.mHttpConnectionManager;
1873	}
1874	
1875	private class DeletedDownloadable implements Downloadable {
1876
1877		@Override
1878		public void start() {
1879			return;
1880		}
1881
1882		@Override
1883		public int getStatus() {
1884			return Downloadable.STATUS_DELETED;
1885		}
1886
1887		@Override
1888		public long getFileSize() {
1889			return 0;
1890		}
1891		
1892	}
1893}