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.R;
  24import eu.siacs.conversations.crypto.PgpEngine;
  25import eu.siacs.conversations.entities.Account;
  26import eu.siacs.conversations.entities.Bookmark;
  27import eu.siacs.conversations.entities.Contact;
  28import eu.siacs.conversations.entities.Conversation;
  29import eu.siacs.conversations.entities.Message;
  30import eu.siacs.conversations.entities.MucOptions;
  31import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  32import eu.siacs.conversations.entities.Presences;
  33import eu.siacs.conversations.generator.IqGenerator;
  34import eu.siacs.conversations.generator.MessageGenerator;
  35import eu.siacs.conversations.generator.PresenceGenerator;
  36import eu.siacs.conversations.parser.IqParser;
  37import eu.siacs.conversations.parser.MessageParser;
  38import eu.siacs.conversations.parser.PresenceParser;
  39import eu.siacs.conversations.persistance.DatabaseBackend;
  40import eu.siacs.conversations.persistance.FileBackend;
  41import eu.siacs.conversations.ui.UiCallback;
  42import eu.siacs.conversations.utils.CryptoHelper;
  43import eu.siacs.conversations.utils.ExceptionHelper;
  44import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  45import eu.siacs.conversations.utils.PRNGFixes;
  46import eu.siacs.conversations.utils.PhoneHelper;
  47import eu.siacs.conversations.utils.UIHelper;
  48import eu.siacs.conversations.xml.Element;
  49import eu.siacs.conversations.xmpp.OnBindListener;
  50import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  51import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  52import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  53import eu.siacs.conversations.xmpp.OnStatusChanged;
  54import eu.siacs.conversations.xmpp.XmppConnection;
  55import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  56import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  57import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  58import eu.siacs.conversations.xmpp.pep.Avatar;
  59import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  60import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  61import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  62import android.annotation.SuppressLint;
  63import android.app.AlarmManager;
  64import android.app.PendingIntent;
  65import android.app.Service;
  66import android.content.Context;
  67import android.content.Intent;
  68import android.content.SharedPreferences;
  69import android.database.ContentObserver;
  70import android.graphics.Bitmap;
  71import android.net.ConnectivityManager;
  72import android.net.NetworkInfo;
  73import android.net.Uri;
  74import android.os.Binder;
  75import android.os.Bundle;
  76import android.os.IBinder;
  77import android.os.PowerManager;
  78import android.os.PowerManager.WakeLock;
  79import android.os.SystemClock;
  80import android.preference.PreferenceManager;
  81import android.provider.ContactsContract;
  82import android.util.Log;
  83
  84public class XmppConnectionService extends Service {
  85
  86	protected static final String LOGTAG = "xmppService";
  87	public DatabaseBackend databaseBackend;
  88	private FileBackend fileBackend;
  89
  90	public long startDate;
  91
  92	private static final int PING_MAX_INTERVAL = 300;
  93	private static final int PING_MIN_INTERVAL = 30;
  94	private static final int PING_TIMEOUT = 10;
  95	private static final int CONNECT_TIMEOUT = 90;
  96	public static final long CARBON_GRACE_PERIOD = 60000L;
  97
  98	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  99
 100	private MemorizingTrustManager mMemorizingTrustManager;
 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();
 106	private PresenceGenerator mPresenceGenerator = new PresenceGenerator();
 107
 108	private List<Account> accounts;
 109	private CopyOnWriteArrayList<Conversation> conversations = null;
 110	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 111			this);
 112
 113	private OnConversationUpdate mOnConversationUpdate = null;
 114	private int convChangedListenerCount = 0;
 115	private OnAccountUpdate mOnAccountUpdate = null;
 116	private int accountChangedListenerCount = 0;
 117	private OnRosterUpdate mOnRosterUpdate = null;
 118	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 119
 120		@Override
 121		public void onContactStatusChanged(Contact contact, boolean online) {
 122			Conversation conversation = find(getConversations(), contact);
 123			if (conversation != null) {
 124				conversation.endOtrIfNeeded();
 125				if (online && (contact.getPresences().size() == 1)) {
 126					sendUnsendMessages(conversation);
 127				}
 128			}
 129		}
 130	};
 131
 132	private SecureRandom mRandom;
 133
 134	private ContentObserver contactObserver = new ContentObserver(null) {
 135		@Override
 136		public void onChange(boolean selfChange) {
 137			super.onChange(selfChange);
 138			Intent intent = new Intent(getApplicationContext(),
 139					XmppConnectionService.class);
 140			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 141			startService(intent);
 142		}
 143	};
 144
 145	private final IBinder mBinder = new XmppConnectionBinder();
 146	private OnStatusChanged statusListener = new OnStatusChanged() {
 147
 148		@Override
 149		public void onStatusChanged(Account account) {
 150			XmppConnection connection = account.getXmppConnection();
 151			if (mOnAccountUpdate != null) {
 152				mOnAccountUpdate.onAccountUpdate();
 153				;
 154			}
 155			if (account.getStatus() == Account.STATUS_ONLINE) {
 156				for (Conversation conversation : account.pendingConferenceLeaves) {
 157					leaveMuc(conversation);
 158				}
 159				for (Conversation conversation : account.pendingConferenceJoins) {
 160					joinMuc(conversation);
 161				}
 162				mJingleConnectionManager.cancelInTransmission();
 163				List<Conversation> conversations = getConversations();
 164				for (int i = 0; i < conversations.size(); ++i) {
 165					if (conversations.get(i).getAccount() == account) {
 166						conversations.get(i).startOtrIfNeeded();
 167						sendUnsendMessages(conversations.get(i));
 168					}
 169				}
 170				if (connection != null && connection.getFeatures().csi()) {
 171					if (checkListeners()) {
 172						Log.d(LOGTAG, account.getJid()
 173								+ " sending csi//inactive");
 174						connection.sendInactive();
 175					} else {
 176						Log.d(LOGTAG, account.getJid() + " sending csi//active");
 177						connection.sendActive();
 178					}
 179				}
 180				syncDirtyContacts(account);
 181				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 182			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 183				resetSendingToWaiting(account);
 184				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 185					int timeToReconnect = mRandom.nextInt(50) + 10;
 186					scheduleWakeupCall(timeToReconnect, false);
 187				}
 188			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 189				databaseBackend.updateAccount(account);
 190				reconnectAccount(account, true);
 191			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 192					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 193				if (connection != null) {
 194					int next = connection.getTimeToNextAttempt();
 195					Log.d(LOGTAG, account.getJid()
 196							+ ": error connecting account. try again in "
 197							+ next + "s for the "
 198							+ (connection.getAttempt() + 1) + " time");
 199					scheduleWakeupCall((int) (next * 1.2), false);
 200				}
 201			}
 202			UIHelper.showErrorNotification(getApplicationContext(),
 203					getAccounts());
 204		}
 205	};
 206
 207	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 208
 209		@Override
 210		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 211			mJingleConnectionManager.deliverPacket(account, packet);
 212		}
 213	};
 214
 215	private OpenPgpServiceConnection pgpServiceConnection;
 216	private PgpEngine mPgpEngine = null;
 217	private Intent pingIntent;
 218	private PendingIntent pendingPingIntent = null;
 219	private WakeLock wakeLock;
 220	private PowerManager pm;
 221	private OnBindListener mOnBindListener = new OnBindListener() {
 222
 223		@Override
 224		public void onBind(final Account account) {
 225			account.getRoster().clearPresences();
 226			account.clearPresences(); // self presences
 227			account.pendingConferenceJoins.clear();
 228			account.pendingConferenceLeaves.clear();
 229			fetchRosterFromServer(account);
 230			fetchBookmarks(account);
 231			sendPresencePacket(account,
 232					mPresenceGenerator.sendPresence(account));
 233			connectMultiModeConversations(account);
 234			updateConversationUi();
 235		}
 236	};
 237
 238	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 239
 240		@Override
 241		public void onMessageAcknowledged(Account account, String uuid) {
 242			for (Conversation conversation : getConversations()) {
 243				if (conversation.getAccount() == account) {
 244					for (Message message : conversation.getMessages()) {
 245						if ((message.getStatus() == Message.STATUS_UNSEND || message
 246								.getStatus() == Message.STATUS_WAITING)
 247								&& message.getUuid().equals(uuid)) {
 248							markMessage(message, Message.STATUS_SEND);
 249							return;
 250						}
 251					}
 252				}
 253			}
 254		}
 255	};
 256
 257	public PgpEngine getPgpEngine() {
 258		if (pgpServiceConnection.isBound()) {
 259			if (this.mPgpEngine == null) {
 260				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 261						getApplicationContext(),
 262						pgpServiceConnection.getService()), this);
 263			}
 264			return mPgpEngine;
 265		} else {
 266			return null;
 267		}
 268
 269	}
 270
 271	public FileBackend getFileBackend() {
 272		return this.fileBackend;
 273	}
 274
 275	public Message attachImageToConversation(final Conversation conversation,
 276			final Uri uri, final UiCallback<Message> callback) {
 277		final Message message;
 278		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 279			message = new Message(conversation, "",
 280					Message.ENCRYPTION_DECRYPTED);
 281		} else {
 282			message = new Message(conversation, "",
 283					conversation.getNextEncryption());
 284		}
 285		message.setPresence(conversation.getNextPresence());
 286		message.setType(Message.TYPE_IMAGE);
 287		message.setStatus(Message.STATUS_OFFERED);
 288		new Thread(new Runnable() {
 289
 290			@Override
 291			public void run() {
 292				try {
 293					getFileBackend().copyImageToPrivateStorage(message, uri);
 294					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 295						getPgpEngine().encrypt(message, callback);
 296					} else {
 297						callback.success(message);
 298					}
 299				} catch (FileBackend.ImageCopyException e) {
 300					callback.error(e.getResId(), message);
 301				}
 302			}
 303		}).start();
 304		return message;
 305	}
 306
 307	public Conversation find(Bookmark bookmark) {
 308		return find(bookmark.getAccount(), bookmark.getJid());
 309	}
 310
 311	public Conversation find(Account account, String jid) {
 312		return find(getConversations(), account, jid);
 313	}
 314
 315	public class XmppConnectionBinder extends Binder {
 316		public XmppConnectionService getService() {
 317			return XmppConnectionService.this;
 318		}
 319	}
 320
 321	@Override
 322	public int onStartCommand(Intent intent, int flags, int startId) {
 323		if ((intent != null)
 324				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 325			mergePhoneContactsWithRoster();
 326			return START_STICKY;
 327		} else if ((intent != null)
 328				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 329			logoutAndSave();
 330			return START_NOT_STICKY;
 331		}
 332		this.wakeLock.acquire();
 333		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 334				.getSystemService(Context.CONNECTIVITY_SERVICE);
 335		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 336		boolean isConnected = activeNetwork != null
 337				&& activeNetwork.isConnected();
 338
 339		for (Account account : accounts) {
 340			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 341				if (!isConnected) {
 342					account.setStatus(Account.STATUS_NO_INTERNET);
 343					if (statusListener != null) {
 344						statusListener.onStatusChanged(account);
 345					}
 346				} else {
 347					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 348						account.setStatus(Account.STATUS_OFFLINE);
 349						if (statusListener != null) {
 350							statusListener.onStatusChanged(account);
 351						}
 352					}
 353					if (account.getStatus() == Account.STATUS_ONLINE) {
 354						long lastReceived = account.getXmppConnection()
 355								.getLastPacketReceived();
 356						long lastSent = account.getXmppConnection()
 357								.getLastPingSent();
 358						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 359							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 360							this.reconnectAccount(account, true);
 361						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 362							account.getXmppConnection().sendPing();
 363							this.scheduleWakeupCall(2, false);
 364						}
 365					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 366						if (account.getXmppConnection() == null) {
 367							account.setXmppConnection(this
 368									.createConnection(account));
 369						}
 370						new Thread(account.getXmppConnection()).start();
 371					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 372							&& ((SystemClock.elapsedRealtime() - account
 373									.getXmppConnection().getLastConnect()) / 1000 >= CONNECT_TIMEOUT)) {
 374						Log.d(LOGTAG, account.getJid()
 375								+ ": time out during connect reconnecting");
 376						reconnectAccount(account, true);
 377					} else {
 378						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 379							reconnectAccount(account, true);
 380						}
 381					}
 382					// in any case. reschedule wakup call
 383					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 384				}
 385				if (mOnAccountUpdate != null) {
 386					mOnAccountUpdate.onAccountUpdate();
 387				}
 388			}
 389		}
 390		if (wakeLock.isHeld()) {
 391			try {
 392				wakeLock.release();
 393			} catch (RuntimeException re) {
 394			}
 395		}
 396		return START_STICKY;
 397	}
 398
 399	@SuppressLint("TrulyRandom")
 400	@Override
 401	public void onCreate() {
 402		ExceptionHelper.init(getApplicationContext());
 403		PRNGFixes.apply();
 404		this.mRandom = new SecureRandom();
 405		this.mMemorizingTrustManager = new MemorizingTrustManager(
 406				getApplicationContext());
 407		this.databaseBackend = DatabaseBackend
 408				.getInstance(getApplicationContext());
 409		this.fileBackend = new FileBackend(getApplicationContext());
 410		this.accounts = databaseBackend.getAccounts();
 411
 412		for (Account account : this.accounts) {
 413			this.databaseBackend.readRoster(account.getRoster());
 414		}
 415		this.mergePhoneContactsWithRoster();
 416		this.getConversations();
 417
 418		getContentResolver().registerContentObserver(
 419				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 420		this.pgpServiceConnection = new OpenPgpServiceConnection(
 421				getApplicationContext(), "org.sufficientlysecure.keychain");
 422		this.pgpServiceConnection.bindToService();
 423
 424		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 425		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 426				"XmppConnectionService");
 427	}
 428
 429	@Override
 430	public void onDestroy() {
 431		super.onDestroy();
 432		this.logoutAndSave();
 433	}
 434
 435	@Override
 436	public void onTaskRemoved(Intent rootIntent) {
 437		super.onTaskRemoved(rootIntent);
 438		this.logoutAndSave();
 439	}
 440
 441	private void logoutAndSave() {
 442		for (Account account : accounts) {
 443			databaseBackend.writeRoster(account.getRoster());
 444			if (account.getXmppConnection() != null) {
 445				disconnect(account, false);
 446			}
 447		}
 448		Context context = getApplicationContext();
 449		AlarmManager alarmManager = (AlarmManager) context
 450				.getSystemService(Context.ALARM_SERVICE);
 451		Intent intent = new Intent(context, EventReceiver.class);
 452		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 453		Log.d(LOGTAG, "good bye");
 454		stopSelf();
 455	}
 456
 457	protected void scheduleWakeupCall(int seconds, boolean ping) {
 458		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 459		Context context = getApplicationContext();
 460		AlarmManager alarmManager = (AlarmManager) context
 461				.getSystemService(Context.ALARM_SERVICE);
 462
 463		if (ping) {
 464			if (this.pingIntent == null) {
 465				this.pingIntent = new Intent(context, EventReceiver.class);
 466				this.pingIntent.setAction("ping");
 467				this.pingIntent.putExtra("time", timeToWake);
 468				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 469						this.pingIntent, 0);
 470				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 471						timeToWake, pendingPingIntent);
 472			} else {
 473				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 474				if (scheduledTime < SystemClock.elapsedRealtime()
 475						|| (scheduledTime > timeToWake)) {
 476					this.pingIntent.putExtra("time", timeToWake);
 477					alarmManager.cancel(this.pendingPingIntent);
 478					this.pendingPingIntent = PendingIntent.getBroadcast(
 479							context, 0, this.pingIntent, 0);
 480					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 481							timeToWake, pendingPingIntent);
 482				}
 483			}
 484		} else {
 485			Intent intent = new Intent(context, EventReceiver.class);
 486			intent.setAction("ping_check");
 487			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 488					intent, 0);
 489			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 490					alarmIntent);
 491		}
 492
 493	}
 494
 495	public XmppConnection createConnection(Account account) {
 496		SharedPreferences sharedPref = getPreferences();
 497		account.setResource(sharedPref.getString("resource", "mobile")
 498				.toLowerCase(Locale.getDefault()));
 499		XmppConnection connection = new XmppConnection(account, this);
 500		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 501		connection.setOnStatusChangedListener(this.statusListener);
 502		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 503		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 504		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 505		connection.setOnBindListener(this.mOnBindListener);
 506		connection
 507				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 508		return connection;
 509	}
 510
 511	synchronized public void sendMessage(Message message) {
 512		Account account = message.getConversation().getAccount();
 513		Conversation conv = message.getConversation();
 514		MessagePacket packet = null;
 515		boolean saveInDb = true;
 516		boolean send = false;
 517		if (account.getStatus() == Account.STATUS_ONLINE) {
 518			if (message.getType() == Message.TYPE_IMAGE) {
 519				if (message.getPresence() != null) {
 520					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 521						if (!conv.hasValidOtrSession()
 522								&& (message.getPresence() != null)) {
 523							conv.startOtrSession(getApplicationContext(),
 524									message.getPresence(), true);
 525							message.setStatus(Message.STATUS_WAITING);
 526						} else if (conv.hasValidOtrSession()
 527								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 528							mJingleConnectionManager
 529									.createNewConnection(message);
 530						} else if (message.getPresence() == null) {
 531							message.setStatus(Message.STATUS_WAITING);
 532						}
 533					} else {
 534						mJingleConnectionManager.createNewConnection(message);
 535					}
 536				} else {
 537					message.setStatus(Message.STATUS_WAITING);
 538				}
 539			} else {
 540				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 541					if (!conv.hasValidOtrSession()
 542							&& (message.getPresence() != null)) {
 543						conv.startOtrSession(getApplicationContext(),
 544								message.getPresence(), true);
 545						message.setStatus(Message.STATUS_WAITING);
 546					} else if (conv.hasValidOtrSession()
 547							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 548						message.setPresence(conv.getOtrSession().getSessionID()
 549								.getUserID());
 550						packet = mMessageGenerator.generateOtrChat(message);
 551						send = true;
 552
 553					} else if (message.getPresence() == null) {
 554						message.setStatus(Message.STATUS_WAITING);
 555					}
 556				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 557					message.getConversation().endOtrIfNeeded();
 558					failWaitingOtrMessages(message.getConversation());
 559					packet = mMessageGenerator.generatePgpChat(message);
 560					send = true;
 561				} else {
 562					message.getConversation().endOtrIfNeeded();
 563					failWaitingOtrMessages(message.getConversation());
 564					packet = mMessageGenerator.generateChat(message);
 565					send = true;
 566				}
 567			}
 568		} else {
 569			message.setStatus(Message.STATUS_WAITING);
 570			if (message.getType() == Message.TYPE_TEXT) {
 571				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 572					String pgpBody = message.getEncryptedBody();
 573					String decryptedBody = message.getBody();
 574					message.setBody(pgpBody);
 575					databaseBackend.createMessage(message);
 576					saveInDb = false;
 577					message.setBody(decryptedBody);
 578				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 579					if (conv.hasValidOtrSession()) {
 580						message.setPresence(conv.getOtrSession().getSessionID()
 581								.getUserID());
 582					} else if (!conv.hasValidOtrSession()
 583							&& message.getPresence() != null) {
 584						conv.startOtrSession(getApplicationContext(),
 585								message.getPresence(), false);
 586					}
 587				}
 588			}
 589
 590		}
 591		if (saveInDb) {
 592			databaseBackend.createMessage(message);
 593		}
 594		conv.getMessages().add(message);
 595		if ((send) && (packet != null)) {
 596			if (!account.getXmppConnection().getFeatures().sm()
 597					&& conv.getMode() != Conversation.MODE_MULTI) {
 598				message.setStatus(Message.STATUS_SEND);
 599			}
 600			sendMessagePacket(account, packet);
 601		}
 602		updateConversationUi();
 603	}
 604
 605	private void sendUnsendMessages(Conversation conversation) {
 606		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 607			int status = conversation.getMessages().get(i).getStatus();
 608			if (status == Message.STATUS_WAITING) {
 609				resendMessage(conversation.getMessages().get(i));
 610			}
 611		}
 612	}
 613
 614	private void resendMessage(Message message) {
 615		Account account = message.getConversation().getAccount();
 616		MessagePacket packet = null;
 617		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 618			Presences presences = message.getConversation().getContact()
 619					.getPresences();
 620			if (!message.getConversation().hasValidOtrSession()) {
 621				if ((message.getPresence() != null)
 622						&& (presences.has(message.getPresence()))) {
 623					message.getConversation().startOtrSession(
 624							getApplicationContext(), message.getPresence(),
 625							true);
 626				} else {
 627					if (presences.size() == 1) {
 628						String presence = presences.asStringArray()[0];
 629						message.getConversation().startOtrSession(
 630								getApplicationContext(), presence, true);
 631					}
 632				}
 633			} else {
 634				if (message.getConversation().getOtrSession()
 635						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 636					if (message.getType() == Message.TYPE_TEXT) {
 637						packet = mMessageGenerator.generateOtrChat(message,
 638								true);
 639					} else if (message.getType() == Message.TYPE_IMAGE) {
 640						mJingleConnectionManager.createNewConnection(message);
 641					}
 642				}
 643			}
 644		} else if (message.getType() == Message.TYPE_TEXT) {
 645			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 646				packet = mMessageGenerator.generateChat(message, true);
 647			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 648					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 649				packet = mMessageGenerator.generatePgpChat(message, true);
 650			}
 651		} else if (message.getType() == Message.TYPE_IMAGE) {
 652			Presences presences = message.getConversation().getContact()
 653					.getPresences();
 654			if ((message.getPresence() != null)
 655					&& (presences.has(message.getPresence()))) {
 656				markMessage(message, Message.STATUS_OFFERED);
 657				mJingleConnectionManager.createNewConnection(message);
 658			} else {
 659				if (presences.size() == 1) {
 660					String presence = presences.asStringArray()[0];
 661					message.setPresence(presence);
 662					markMessage(message, Message.STATUS_OFFERED);
 663					mJingleConnectionManager.createNewConnection(message);
 664				}
 665			}
 666		}
 667		if (packet != null) {
 668			sendMessagePacket(account, packet);
 669			markMessage(message, Message.STATUS_SEND);
 670		}
 671	}
 672
 673	public void fetchRosterFromServer(Account account) {
 674		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 675		if (!"".equals(account.getRosterVersion())) {
 676			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 677					+ account.getRosterVersion());
 678		} else {
 679			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 680		}
 681		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 682				account.getRosterVersion());
 683		account.getXmppConnection().sendIqPacket(iqPacket,
 684				new OnIqPacketReceived() {
 685
 686					@Override
 687					public void onIqPacketReceived(final Account account,
 688							IqPacket packet) {
 689						Element query = packet.findChild("query");
 690						if (query != null) {
 691							account.getRoster().markAllAsNotInRoster();
 692							mIqParser.rosterItems(account, query);
 693						}
 694					}
 695				});
 696	}
 697
 698	public void fetchBookmarks(Account account) {
 699		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 700		Element query = iqPacket.query("jabber:iq:private");
 701		query.addChild("storage", "storage:bookmarks");
 702		OnIqPacketReceived callback = new OnIqPacketReceived() {
 703
 704			@Override
 705			public void onIqPacketReceived(Account account, IqPacket packet) {
 706				Element query = packet.query();
 707				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 708				Element storage = query.findChild("storage",
 709						"storage:bookmarks");
 710				if (storage != null) {
 711					for (Element item : storage.getChildren()) {
 712						if (item.getName().equals("conference")) {
 713							Bookmark bookmark = Bookmark.parse(item, account);
 714							bookmarks.add(bookmark);
 715							Conversation conversation = find(bookmark);
 716							if (conversation != null) {
 717								conversation.setBookmark(bookmark);
 718							} else {
 719								if (bookmark.autojoin()) {
 720									conversation = findOrCreateConversation(
 721											account, bookmark.getJid(), true);
 722									conversation.setBookmark(bookmark);
 723									joinMuc(conversation);
 724								}
 725							}
 726						}
 727					}
 728				}
 729				account.setBookmarks(bookmarks);
 730			}
 731		};
 732		sendIqPacket(account, iqPacket, callback);
 733
 734	}
 735
 736	public void pushBookmarks(Account account) {
 737		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 738		Element query = iqPacket.query("jabber:iq:private");
 739		Element storage = query.addChild("storage", "storage:bookmarks");
 740		for (Bookmark bookmark : account.getBookmarks()) {
 741			storage.addChild(bookmark.toElement());
 742		}
 743		sendIqPacket(account, iqPacket, null);
 744	}
 745
 746	private void mergePhoneContactsWithRoster() {
 747		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 748				new OnPhoneContactsLoadedListener() {
 749					@Override
 750					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 751						for (Account account : accounts) {
 752							account.getRoster().clearSystemAccounts();
 753						}
 754						for (Bundle phoneContact : phoneContacts) {
 755							for (Account account : accounts) {
 756								String jid = phoneContact.getString("jid");
 757								Contact contact = account.getRoster()
 758										.getContact(jid);
 759								String systemAccount = phoneContact
 760										.getInt("phoneid")
 761										+ "#"
 762										+ phoneContact.getString("lookup");
 763								contact.setSystemAccount(systemAccount);
 764								contact.setPhotoUri(phoneContact
 765										.getString("photouri"));
 766								contact.setSystemName(phoneContact
 767										.getString("displayname"));
 768							}
 769						}
 770					}
 771				});
 772	}
 773
 774	public List<Conversation> getConversations() {
 775		if (this.conversations == null) {
 776			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 777			for (Account account : this.accounts) {
 778				accountLookupTable.put(account.getUuid(), account);
 779			}
 780			this.conversations = databaseBackend
 781					.getConversations(Conversation.STATUS_AVAILABLE);
 782			for (Conversation conv : this.conversations) {
 783				Account account = accountLookupTable.get(conv.getAccountUuid());
 784				conv.setAccount(account);
 785				conv.setMessages(databaseBackend.getMessages(conv, 50));
 786			}
 787		}
 788
 789		return this.conversations;
 790	}
 791
 792	public void populateWithOrderedConversations(List<Conversation> list) {
 793		list.clear();
 794		list.addAll(getConversations());
 795		Collections.sort(list, new Comparator<Conversation>() {
 796			@Override
 797			public int compare(Conversation lhs, Conversation rhs) {
 798				Message left = lhs.getLatestMessage();
 799				Message right = rhs.getLatestMessage();
 800				if (left.getTimeSent() > right.getTimeSent()) {
 801					return -1;
 802				} else if (left.getTimeSent() < right.getTimeSent()) {
 803					return 1;
 804				} else {
 805					return 0;
 806				}
 807			}
 808		});
 809	}
 810
 811	public List<Message> getMoreMessages(Conversation conversation,
 812			long timestamp) {
 813		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 814				timestamp);
 815		for (Message message : messages) {
 816			message.setConversation(conversation);
 817		}
 818		return messages;
 819	}
 820
 821	public List<Account> getAccounts() {
 822		return this.accounts;
 823	}
 824
 825	public Conversation find(List<Conversation> haystack, Contact contact) {
 826		for (Conversation conversation : haystack) {
 827			if (conversation.getContact() == contact) {
 828				return conversation;
 829			}
 830		}
 831		return null;
 832	}
 833
 834	public Conversation find(List<Conversation> haystack, Account account,
 835			String jid) {
 836		for (Conversation conversation : haystack) {
 837			if ((conversation.getAccount().equals(account))
 838					&& (conversation.getContactJid().split("/")[0].equals(jid))) {
 839				return conversation;
 840			}
 841		}
 842		return null;
 843	}
 844
 845	public Conversation findOrCreateConversation(Account account, String jid,
 846			boolean muc) {
 847		Conversation conversation = find(account, jid);
 848		if (conversation != null) {
 849			return conversation;
 850		}
 851		conversation = databaseBackend.findConversation(account, jid);
 852		if (conversation != null) {
 853			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 854			conversation.setAccount(account);
 855			if (muc) {
 856				conversation.setMode(Conversation.MODE_MULTI);
 857			} else {
 858				conversation.setMode(Conversation.MODE_SINGLE);
 859			}
 860			conversation.setMessages(databaseBackend.getMessages(conversation,
 861					50));
 862			this.databaseBackend.updateConversation(conversation);
 863		} else {
 864			String conversationName;
 865			Contact contact = account.getRoster().getContact(jid);
 866			if (contact != null) {
 867				conversationName = contact.getDisplayName();
 868			} else {
 869				conversationName = jid.split("@")[0];
 870			}
 871			if (muc) {
 872				conversation = new Conversation(conversationName, account, jid,
 873						Conversation.MODE_MULTI);
 874			} else {
 875				conversation = new Conversation(conversationName, account, jid,
 876						Conversation.MODE_SINGLE);
 877			}
 878			this.databaseBackend.createConversation(conversation);
 879		}
 880		this.conversations.add(conversation);
 881		updateConversationUi();
 882		return conversation;
 883	}
 884
 885	public void archiveConversation(Conversation conversation) {
 886		if (conversation.getMode() == Conversation.MODE_MULTI) {
 887			Bookmark bookmark = conversation.getBookmark();
 888			if (bookmark != null && bookmark.autojoin()) {
 889				bookmark.setAutojoin(false);
 890				pushBookmarks(bookmark.getAccount());
 891			}
 892			leaveMuc(conversation);
 893		} else {
 894			conversation.endOtrIfNeeded();
 895		}
 896		this.databaseBackend.updateConversation(conversation);
 897		this.conversations.remove(conversation);
 898		updateConversationUi();
 899	}
 900
 901	public void clearConversationHistory(Conversation conversation) {
 902		this.databaseBackend.deleteMessagesInConversation(conversation);
 903		this.fileBackend.removeFiles(conversation);
 904		conversation.getMessages().clear();
 905		updateConversationUi();
 906	}
 907
 908	public int getConversationCount() {
 909		return this.databaseBackend.getConversationCount();
 910	}
 911
 912	public void createAccount(Account account) {
 913		databaseBackend.createAccount(account);
 914		this.accounts.add(account);
 915		this.reconnectAccount(account, false);
 916		updateAccountUi();
 917	}
 918
 919	public void updateAccount(Account account) {
 920		this.statusListener.onStatusChanged(account);
 921		databaseBackend.updateAccount(account);
 922		reconnectAccount(account, false);
 923		updateAccountUi();
 924		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 925	}
 926
 927	public void deleteAccount(Account account) {
 928		for (Conversation conversation : conversations) {
 929			if (conversation.getAccount() == account) {
 930				if (conversation.getMode() == Conversation.MODE_MULTI) {
 931					leaveMuc(conversation);
 932				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
 933					conversation.endOtrIfNeeded();
 934				}
 935				conversations.remove(conversation);
 936			}
 937		}
 938		if (account.getXmppConnection() != null) {
 939			this.disconnect(account, true);
 940		}
 941		databaseBackend.deleteAccount(account);
 942		this.accounts.remove(account);
 943		updateAccountUi();
 944		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 945	}
 946
 947	public void setOnConversationListChangedListener(
 948			OnConversationUpdate listener) {
 949		if (checkListeners()) {
 950			switchToForeground();
 951		}
 952		this.mOnConversationUpdate = listener;
 953		this.convChangedListenerCount++;
 954	}
 955
 956	public void removeOnConversationListChangedListener() {
 957		this.convChangedListenerCount--;
 958		if (this.convChangedListenerCount == 0) {
 959			this.mOnConversationUpdate = null;
 960			if (checkListeners()) {
 961				switchToBackground();
 962			}
 963		}
 964	}
 965
 966	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
 967		if (checkListeners()) {
 968			switchToForeground();
 969		}
 970		this.mOnAccountUpdate = listener;
 971		this.accountChangedListenerCount++;
 972	}
 973
 974	public void removeOnAccountListChangedListener() {
 975		this.accountChangedListenerCount--;
 976		if (this.accountChangedListenerCount == 0) {
 977			this.mOnAccountUpdate = null;
 978			if (checkListeners()) {
 979				switchToBackground();
 980			}
 981		}
 982	}
 983
 984	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
 985		if (checkListeners()) {
 986			switchToForeground();
 987		}
 988		this.mOnRosterUpdate = listener;
 989	}
 990
 991	public void removeOnRosterUpdateListener() {
 992		this.mOnRosterUpdate = null;
 993		if (checkListeners()) {
 994			switchToBackground();
 995		}
 996	}
 997
 998	private boolean checkListeners() {
 999		return (this.mOnAccountUpdate == null
1000				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1001	}
1002
1003	private void switchToForeground() {
1004		for (Account account : getAccounts()) {
1005			if (account.getStatus() == Account.STATUS_ONLINE) {
1006				XmppConnection connection = account.getXmppConnection();
1007				if (connection != null && connection.getFeatures().csi()) {
1008					connection.sendActive();
1009					Log.d(LOGTAG, account.getJid() + " sending csi//active");
1010				}
1011			}
1012		}
1013	}
1014
1015	private void switchToBackground() {
1016		for (Account account : getAccounts()) {
1017			if (account.getStatus() == Account.STATUS_ONLINE) {
1018				XmppConnection connection = account.getXmppConnection();
1019				if (connection != null && connection.getFeatures().csi()) {
1020					connection.sendInactive();
1021					Log.d(LOGTAG, account.getJid() + " sending csi//inactive");
1022				}
1023			}
1024		}
1025	}
1026
1027	public void connectMultiModeConversations(Account account) {
1028		List<Conversation> conversations = getConversations();
1029		for (int i = 0; i < conversations.size(); i++) {
1030			Conversation conversation = conversations.get(i);
1031			if ((conversation.getMode() == Conversation.MODE_MULTI)
1032					&& (conversation.getAccount() == account)) {
1033				joinMuc(conversation);
1034			}
1035		}
1036	}
1037
1038	public void joinMuc(Conversation conversation) {
1039		Account account = conversation.getAccount();
1040		account.pendingConferenceJoins.remove(conversation);
1041		account.pendingConferenceLeaves.remove(conversation);
1042		if (account.getStatus() == Account.STATUS_ONLINE) {
1043			Log.d(LOGTAG,
1044					"joining conversation " + conversation.getContactJid());
1045			String nick = conversation.getMucOptions().getProposedNick();
1046			conversation.getMucOptions().setJoinNick(nick);
1047			PresencePacket packet = new PresencePacket();
1048			String joinJid = conversation.getMucOptions().getJoinJid();
1049			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1050			Element x = new Element("x");
1051			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1052			String sig = account.getPgpSignature();
1053			if (sig != null) {
1054				packet.addChild("status").setContent("online");
1055				packet.addChild("x", "jabber:x:signed").setContent(sig);
1056			}
1057			if (conversation.getMessages().size() != 0) {
1058				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1059						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1060				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1061				Date date = new Date(conversation.getLatestMessage()
1062						.getTimeSent() + 1000);
1063				x.addChild("history").setAttribute("since",
1064						mDateFormat.format(date));
1065			}
1066			packet.addChild(x);
1067			sendPresencePacket(account, packet);
1068			if (!joinJid.equals(conversation.getContactJid())) {
1069				conversation.setContactJid(joinJid);
1070				databaseBackend.updateConversation(conversation);
1071			}
1072		} else {
1073			account.pendingConferenceJoins.add(conversation);
1074		}
1075	}
1076
1077	private OnRenameListener renameListener = null;
1078	private IqGenerator mIqGenerator = new IqGenerator();
1079
1080	public void setOnRenameListener(OnRenameListener listener) {
1081		this.renameListener = listener;
1082	}
1083
1084	public void renameInMuc(final Conversation conversation, final String nick) {
1085		final MucOptions options = conversation.getMucOptions();
1086		options.setJoinNick(nick);
1087		if (options.online()) {
1088			Account account = conversation.getAccount();
1089			options.setOnRenameListener(new OnRenameListener() {
1090
1091				@Override
1092				public void onRename(boolean success) {
1093					if (renameListener != null) {
1094						renameListener.onRename(success);
1095					}
1096					if (success) {
1097						conversation.setContactJid(conversation.getMucOptions()
1098								.getJoinJid());
1099						databaseBackend.updateConversation(conversation);
1100						Bookmark bookmark = conversation.getBookmark();
1101						if (bookmark != null) {
1102							bookmark.setNick(nick);
1103							pushBookmarks(bookmark.getAccount());
1104						}
1105					}
1106				}
1107			});
1108			options.flagAboutToRename();
1109			PresencePacket packet = new PresencePacket();
1110			packet.setAttribute("to", options.getJoinJid());
1111			packet.setAttribute("from", conversation.getAccount().getFullJid());
1112
1113			String sig = account.getPgpSignature();
1114			if (sig != null) {
1115				packet.addChild("status").setContent("online");
1116				packet.addChild("x", "jabber:x:signed").setContent(sig);
1117			}
1118			sendPresencePacket(account, packet);
1119		} else {
1120			conversation.setContactJid(options.getJoinJid());
1121			databaseBackend.updateConversation(conversation);
1122			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1123				Bookmark bookmark = conversation.getBookmark();
1124				if (bookmark != null) {
1125					bookmark.setNick(nick);
1126					pushBookmarks(bookmark.getAccount());
1127				}
1128				joinMuc(conversation);
1129			}
1130		}
1131	}
1132
1133	public void leaveMuc(Conversation conversation) {
1134		Account account = conversation.getAccount();
1135		account.pendingConferenceJoins.remove(conversation);
1136		account.pendingConferenceLeaves.remove(conversation);
1137		if (account.getStatus() == Account.STATUS_ONLINE) {
1138			PresencePacket packet = new PresencePacket();
1139			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1140			packet.setAttribute("from", conversation.getAccount().getFullJid());
1141			packet.setAttribute("type", "unavailable");
1142			sendPresencePacket(conversation.getAccount(), packet);
1143			conversation.getMucOptions().setOffline();
1144			conversation.deregisterWithBookmark();
1145			Log.d(LOGTAG, conversation.getAccount().getJid() + " leaving muc "
1146					+ conversation.getContactJid());
1147		} else {
1148			account.pendingConferenceLeaves.add(conversation);
1149		}
1150	}
1151
1152	public void disconnect(Account account, boolean force) {
1153		if ((account.getStatus() == Account.STATUS_ONLINE)
1154				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1155			if (!force) {
1156				List<Conversation> conversations = getConversations();
1157				for (int i = 0; i < conversations.size(); i++) {
1158					Conversation conversation = conversations.get(i);
1159					if (conversation.getAccount() == account) {
1160						if (conversation.getMode() == Conversation.MODE_MULTI) {
1161							leaveMuc(conversation);
1162						} else {
1163							conversation.endOtrIfNeeded();
1164						}
1165					}
1166				}
1167			}
1168			account.getXmppConnection().disconnect(force);
1169		}
1170	}
1171
1172	@Override
1173	public IBinder onBind(Intent intent) {
1174		return mBinder;
1175	}
1176
1177	public void updateMessage(Message message) {
1178		databaseBackend.updateMessage(message);
1179	}
1180
1181	protected void syncDirtyContacts(Account account) {
1182		for (Contact contact : account.getRoster().getContacts()) {
1183			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1184				pushContactToServer(contact);
1185			}
1186			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1187				Log.d(LOGTAG, "dirty delete");
1188				deleteContactOnServer(contact);
1189			}
1190		}
1191	}
1192
1193	public void createContact(Contact contact) {
1194		SharedPreferences sharedPref = getPreferences();
1195		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1196		if (autoGrant) {
1197			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1198			contact.setOption(Contact.Options.ASKING);
1199		}
1200		pushContactToServer(contact);
1201	}
1202
1203	public void onOtrSessionEstablished(Conversation conversation) {
1204		Account account = conversation.getAccount();
1205		List<Message> messages = conversation.getMessages();
1206		Session otrSession = conversation.getOtrSession();
1207		Log.d(LOGTAG, account.getJid() + " otr session established with "
1208				+ conversation.getContactJid() + "/"
1209				+ otrSession.getSessionID().getUserID());
1210		for (int i = 0; i < messages.size(); ++i) {
1211			Message msg = messages.get(i);
1212			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1213					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1214				msg.setPresence(otrSession.getSessionID().getUserID());
1215				if (msg.getType() == Message.TYPE_TEXT) {
1216					MessagePacket outPacket = mMessageGenerator
1217							.generateOtrChat(msg, true);
1218					if (outPacket != null) {
1219						msg.setStatus(Message.STATUS_SEND);
1220						databaseBackend.updateMessage(msg);
1221						sendMessagePacket(account, outPacket);
1222					}
1223				} else if (msg.getType() == Message.TYPE_IMAGE) {
1224					mJingleConnectionManager.createNewConnection(msg);
1225				}
1226			}
1227		}
1228		notifyUi(conversation, false);
1229	}
1230
1231	public boolean renewSymmetricKey(Conversation conversation) {
1232		Account account = conversation.getAccount();
1233		byte[] symmetricKey = new byte[32];
1234		this.mRandom.nextBytes(symmetricKey);
1235		Session otrSession = conversation.getOtrSession();
1236		if (otrSession != null) {
1237			MessagePacket packet = new MessagePacket();
1238			packet.setType(MessagePacket.TYPE_CHAT);
1239			packet.setFrom(account.getFullJid());
1240			packet.addChild("private", "urn:xmpp:carbons:2");
1241			packet.addChild("no-copy", "urn:xmpp:hints");
1242			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1243					+ otrSession.getSessionID().getUserID());
1244			try {
1245				packet.setBody(otrSession
1246						.transformSending(CryptoHelper.FILETRANSFER
1247								+ CryptoHelper.bytesToHex(symmetricKey)));
1248				sendMessagePacket(account, packet);
1249				conversation.setSymmetricKey(symmetricKey);
1250				return true;
1251			} catch (OtrException e) {
1252				return false;
1253			}
1254		}
1255		return false;
1256	}
1257
1258	public void pushContactToServer(Contact contact) {
1259		contact.resetOption(Contact.Options.DIRTY_DELETE);
1260		contact.setOption(Contact.Options.DIRTY_PUSH);
1261		Account account = contact.getAccount();
1262		if (account.getStatus() == Account.STATUS_ONLINE) {
1263			boolean ask = contact.getOption(Contact.Options.ASKING);
1264			boolean sendUpdates = contact
1265					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1266					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1267			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1268			iq.query("jabber:iq:roster").addChild(contact.asElement());
1269			account.getXmppConnection().sendIqPacket(iq, null);
1270			if (sendUpdates) {
1271				sendPresencePacket(account,
1272						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1273			}
1274			if (ask) {
1275				sendPresencePacket(account,
1276						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1277			}
1278		}
1279	}
1280
1281	public void publishAvatar(Account account, Uri image,
1282			final UiCallback<Avatar> callback) {
1283		final Bitmap.CompressFormat format = Defaults.AVATAR_FORMAT;
1284		final int size = Defaults.AVATAR_SIZE;
1285		final Avatar avatar = getFileBackend()
1286				.getPepAvatar(image, size, format);
1287		if (avatar != null) {
1288			avatar.height = size;
1289			avatar.width = size;
1290			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1291				avatar.type = "image/webp";
1292			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1293				avatar.type = "image/jpeg";
1294			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1295				avatar.type = "image/png";
1296			}
1297			if (!getFileBackend().save(avatar)) {
1298				callback.error(R.string.error_saving_avatar, avatar);
1299				return;
1300			}
1301			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1302			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1303
1304				@Override
1305				public void onIqPacketReceived(Account account, IqPacket result) {
1306					if (result.getType() == IqPacket.TYPE_RESULT) {
1307						IqPacket packet = XmppConnectionService.this.mIqGenerator
1308								.publishAvatarMetadata(avatar);
1309						sendIqPacket(account, packet, new OnIqPacketReceived() {
1310
1311							@Override
1312							public void onIqPacketReceived(Account account,
1313									IqPacket result) {
1314								if (result.getType() == IqPacket.TYPE_RESULT) {
1315									if (account.setAvatar(avatar.getFilename())) {
1316										databaseBackend.updateAccount(account);
1317									}
1318									callback.success(avatar);
1319								} else {
1320									callback.error(
1321											R.string.error_publish_avatar_server_reject,
1322											avatar);
1323								}
1324							}
1325						});
1326					} else {
1327						callback.error(
1328								R.string.error_publish_avatar_server_reject,
1329								avatar);
1330					}
1331				}
1332			});
1333		} else {
1334			callback.error(R.string.error_publish_avatar_converting, null);
1335		}
1336	}
1337
1338	public void fetchAvatar(Account account, Avatar avatar) {
1339		fetchAvatar(account, avatar, null);
1340	}
1341
1342	public void fetchAvatar(Account account, final Avatar avatar,
1343			final UiCallback<Avatar> callback) {
1344		Log.d(LOGTAG, account.getJid() + ": retrieving avatar for "
1345				+ avatar.owner);
1346		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1347		sendIqPacket(account, packet, new OnIqPacketReceived() {
1348
1349			@Override
1350			public void onIqPacketReceived(Account account, IqPacket result) {
1351				avatar.image = mIqParser.avatarData(result);
1352				if (avatar.image != null) {
1353					if (getFileBackend().save(avatar)) {
1354						if (account.getJid().equals(avatar.owner)) {
1355							if (account.setAvatar(avatar.getFilename())) {
1356								databaseBackend.updateAccount(account);
1357							}
1358						} else {
1359							Contact contact = account.getRoster().getContact(
1360									avatar.owner);
1361							contact.setAvatar(avatar.getFilename());
1362						}
1363						if (callback != null) {
1364							callback.success(avatar);
1365						}
1366						return;
1367					}
1368				}
1369				if (callback != null) {
1370					callback.error(0, null);
1371				}
1372			}
1373		});
1374	}
1375
1376	public void checkForAvatar(Account account,
1377			final UiCallback<Avatar> callback) {
1378		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1379		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1380
1381			@Override
1382			public void onIqPacketReceived(Account account, IqPacket packet) {
1383				if (packet.getType() == IqPacket.TYPE_RESULT) {
1384					Element pubsub = packet.findChild("pubsub",
1385							"http://jabber.org/protocol/pubsub");
1386					if (pubsub != null) {
1387						Element items = pubsub.findChild("items");
1388						if (items != null) {
1389							Avatar avatar = Avatar.parseMetadata(items);
1390							if (avatar != null) {
1391								avatar.owner = account.getJid();
1392								if (fileBackend.isAvatarCached(avatar)) {
1393									if (account.setAvatar(avatar.getFilename())) {
1394										databaseBackend.updateAccount(account);
1395									}
1396									callback.success(avatar);
1397								} else {
1398									fetchAvatar(account, avatar, callback);
1399								}
1400								return;
1401							}
1402						}
1403					}
1404				}
1405				callback.error(0, null);
1406			}
1407		});
1408	}
1409
1410	public void deleteContactOnServer(Contact contact) {
1411		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1412		contact.resetOption(Contact.Options.DIRTY_PUSH);
1413		contact.setOption(Contact.Options.DIRTY_DELETE);
1414		Account account = contact.getAccount();
1415		if (account.getStatus() == Account.STATUS_ONLINE) {
1416			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1417			Element item = iq.query("jabber:iq:roster").addChild("item");
1418			item.setAttribute("jid", contact.getJid());
1419			item.setAttribute("subscription", "remove");
1420			account.getXmppConnection().sendIqPacket(iq, null);
1421		}
1422	}
1423
1424	public void updateConversation(Conversation conversation) {
1425		this.databaseBackend.updateConversation(conversation);
1426	}
1427
1428	public void reconnectAccount(final Account account, final boolean force) {
1429		new Thread(new Runnable() {
1430
1431			@Override
1432			public void run() {
1433				if (account.getXmppConnection() != null) {
1434					disconnect(account, force);
1435				}
1436				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1437					if (account.getXmppConnection() == null) {
1438						account.setXmppConnection(createConnection(account));
1439					}
1440					Thread thread = new Thread(account.getXmppConnection());
1441					thread.start();
1442					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1443				}
1444			}
1445		}).start();
1446	}
1447
1448	public void invite(Conversation conversation, String contact) {
1449		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1450		sendMessagePacket(conversation.getAccount(), packet);
1451	}
1452
1453	public void resetSendingToWaiting(Account account) {
1454		for (Conversation conversation : getConversations()) {
1455			if (conversation.getAccount() == account) {
1456				for (Message message : conversation.getMessages()) {
1457					if (message.getStatus() == Message.STATUS_UNSEND) {
1458						markMessage(message, Message.STATUS_WAITING);
1459					}
1460				}
1461			}
1462		}
1463	}
1464
1465	public boolean markMessage(Account account, String recipient, String uuid,
1466			int status) {
1467		for (Conversation conversation : getConversations()) {
1468			if (conversation.getContactJid().equals(recipient)
1469					&& conversation.getAccount().equals(account)) {
1470				return markMessage(conversation, uuid, status);
1471			}
1472		}
1473		return false;
1474	}
1475
1476	public boolean markMessage(Conversation conversation, String uuid,
1477			int status) {
1478		for (Message message : conversation.getMessages()) {
1479			if (message.getUuid().equals(uuid)) {
1480				markMessage(message, status);
1481				return true;
1482			}
1483		}
1484		return false;
1485	}
1486
1487	public void markMessage(Message message, int status) {
1488		message.setStatus(status);
1489		databaseBackend.updateMessage(message);
1490		updateConversationUi();
1491	}
1492
1493	public SharedPreferences getPreferences() {
1494		return PreferenceManager
1495				.getDefaultSharedPreferences(getApplicationContext());
1496	}
1497
1498	public boolean confirmMessages() {
1499		return getPreferences().getBoolean("confirm_messages", true);
1500	}
1501
1502	public void notifyUi(Conversation conversation, boolean notify) {
1503		if (mOnConversationUpdate != null) {
1504			mOnConversationUpdate.onConversationUpdate();
1505		} else {
1506			UIHelper.updateNotification(getApplicationContext(),
1507					getConversations(), conversation, notify);
1508		}
1509	}
1510
1511	public void updateConversationUi() {
1512		if (mOnConversationUpdate != null) {
1513			mOnConversationUpdate.onConversationUpdate();
1514		}
1515	}
1516
1517	public void updateAccountUi() {
1518		if (mOnAccountUpdate != null) {
1519			mOnAccountUpdate.onAccountUpdate();
1520		}
1521	}
1522
1523	public void updateRosterUi() {
1524		if (mOnRosterUpdate != null) {
1525			mOnRosterUpdate.onRosterUpdate();
1526		}
1527	}
1528
1529	public Account findAccountByJid(String accountJid) {
1530		for (Account account : this.accounts) {
1531			if (account.getJid().equals(accountJid)) {
1532				return account;
1533			}
1534		}
1535		return null;
1536	}
1537
1538	public Conversation findConversationByUuid(String uuid) {
1539		for (Conversation conversation : getConversations()) {
1540			if (conversation.getUuid().equals(uuid)) {
1541				return conversation;
1542			}
1543		}
1544		return null;
1545	}
1546
1547	public void markRead(Conversation conversation) {
1548		conversation.markRead();
1549		String id = conversation.popLatestMarkableMessageId();
1550		if (confirmMessages() && id != null) {
1551			Account account = conversation.getAccount();
1552			String to = conversation.getContactJid();
1553			this.sendMessagePacket(conversation.getAccount(),
1554					mMessageGenerator.confirm(account, to, id));
1555		}
1556	}
1557
1558	public void failWaitingOtrMessages(Conversation conversation) {
1559		for (Message message : conversation.getMessages()) {
1560			if (message.getEncryption() == Message.ENCRYPTION_OTR
1561					&& message.getStatus() == Message.STATUS_WAITING) {
1562				markMessage(message, Message.STATUS_SEND_FAILED);
1563			}
1564		}
1565	}
1566
1567	public SecureRandom getRNG() {
1568		return this.mRandom;
1569	}
1570
1571	public MemorizingTrustManager getMemorizingTrustManager() {
1572		return this.mMemorizingTrustManager;
1573	}
1574
1575	public PowerManager getPowerManager() {
1576		return this.pm;
1577	}
1578
1579	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1580		if (account.getStatus() == Account.STATUS_ONLINE) {
1581			MessagePacket error = this.mMessageGenerator
1582					.generateNotAcceptable(packet);
1583			sendMessagePacket(account, error);
1584		}
1585	}
1586
1587	public void syncRosterToDisk(final Account account) {
1588		new Thread(new Runnable() {
1589
1590			@Override
1591			public void run() {
1592				databaseBackend.writeRoster(account.getRoster());
1593			}
1594		}).start();
1595
1596	}
1597
1598	public List<String> getKnownHosts() {
1599		List<String> hosts = new ArrayList<String>();
1600		for (Account account : getAccounts()) {
1601			if (!hosts.contains(account.getServer())) {
1602				hosts.add(account.getServer());
1603			}
1604			for (Contact contact : account.getRoster().getContacts()) {
1605				if (contact.showInRoster()) {
1606					String server = contact.getServer();
1607					if (server != null && !hosts.contains(server)) {
1608						hosts.add(server);
1609					}
1610				}
1611			}
1612		}
1613		return hosts;
1614	}
1615
1616	public List<String> getKnownConferenceHosts() {
1617		ArrayList<String> mucServers = new ArrayList<String>();
1618		for (Account account : accounts) {
1619			if (account.getXmppConnection() != null) {
1620				String server = account.getXmppConnection().getMucServer();
1621				if (server != null && !mucServers.contains(server)) {
1622					mucServers.add(server);
1623				}
1624			}
1625		}
1626		return mucServers;
1627	}
1628
1629	public void sendMessagePacket(Account account, MessagePacket packet) {
1630		account.getXmppConnection().sendMessagePacket(packet);
1631	}
1632
1633	public void sendPresencePacket(Account account, PresencePacket packet) {
1634		account.getXmppConnection().sendPresencePacket(packet);
1635	}
1636
1637	public void sendIqPacket(Account account, IqPacket packet,
1638			OnIqPacketReceived callback) {
1639		account.getXmppConnection().sendIqPacket(packet, callback);
1640	}
1641
1642	public MessageGenerator getMessageGenerator() {
1643		return this.mMessageGenerator;
1644	}
1645
1646	public PresenceGenerator getPresenceGenerator() {
1647		return this.mPresenceGenerator;
1648	}
1649
1650	public IqGenerator getIqGenerator() {
1651		return this.mIqGenerator;
1652	}
1653
1654	public JingleConnectionManager getJingleConnectionManager() {
1655		return this.mJingleConnectionManager;
1656	}
1657
1658	public interface OnConversationUpdate {
1659		public void onConversationUpdate();
1660	}
1661
1662	public interface OnAccountUpdate {
1663		public void onAccountUpdate();
1664	}
1665
1666	public interface OnRosterUpdate {
1667		public void onRosterUpdate();
1668	}
1669}