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