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.resetOtrSession();
 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(forceEncryption()) == Message.ENCRYPTION_PGP) {
 274			message = new Message(conversation, "",
 275					Message.ENCRYPTION_DECRYPTED);
 276		} else {
 277			message = new Message(conversation, "",
 278					conversation.getNextEncryption(forceEncryption()));
 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(forceEncryption()) == 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(this, message.getPresence(),
 520									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(this, message.getPresence(), true);
 540						message.setStatus(Message.STATUS_WAITING);
 541					} else if (conv.hasValidOtrSession()
 542							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 543						message.setPresence(conv.getOtrSession().getSessionID()
 544								.getUserID());
 545						packet = mMessageGenerator.generateOtrChat(message);
 546						send = true;
 547
 548					} else if (message.getPresence() == null) {
 549						message.setStatus(Message.STATUS_WAITING);
 550					}
 551				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 552					message.getConversation().endOtrIfNeeded();
 553					failWaitingOtrMessages(message.getConversation());
 554					packet = mMessageGenerator.generatePgpChat(message);
 555					send = true;
 556				} else {
 557					message.getConversation().endOtrIfNeeded();
 558					failWaitingOtrMessages(message.getConversation());
 559					packet = mMessageGenerator.generateChat(message);
 560					send = true;
 561				}
 562			}
 563		} else {
 564			message.setStatus(Message.STATUS_WAITING);
 565			if (message.getType() == Message.TYPE_TEXT) {
 566				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 567					String pgpBody = message.getEncryptedBody();
 568					String decryptedBody = message.getBody();
 569					message.setBody(pgpBody);
 570					message.setEncryption(Message.ENCRYPTION_PGP);
 571					databaseBackend.createMessage(message);
 572					saveInDb = false;
 573					message.setBody(decryptedBody);
 574					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 575				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 576					if (conv.hasValidOtrSession()) {
 577						message.setPresence(conv.getOtrSession().getSessionID()
 578								.getUserID());
 579					} else if (!conv.hasValidOtrSession()
 580							&& message.getPresence() != null) {
 581						conv.startOtrSession(this, message.getPresence(), false);
 582					}
 583				}
 584			}
 585
 586		}
 587		if (saveInDb) {
 588			if (message.getEncryption() == Message.ENCRYPTION_NONE || saveEncryptedMessages()) {
 589				databaseBackend.createMessage(message);
 590			}
 591		}
 592		conv.getMessages().add(message);
 593		if ((send) && (packet != null)) {
 594			if (!account.getXmppConnection().getFeatures().sm()
 595					&& conv.getMode() != Conversation.MODE_MULTI) {
 596				message.setStatus(Message.STATUS_SEND);
 597			}
 598			sendMessagePacket(account, packet);
 599		}
 600		updateConversationUi();
 601	}
 602
 603	private void sendUnsendMessages(Conversation conversation) {
 604		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 605			int status = conversation.getMessages().get(i).getStatus();
 606			if (status == Message.STATUS_WAITING) {
 607				resendMessage(conversation.getMessages().get(i));
 608			}
 609		}
 610	}
 611
 612	private void resendMessage(Message message) {
 613		Account account = message.getConversation().getAccount();
 614		MessagePacket packet = null;
 615		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 616			Presences presences = message.getConversation().getContact()
 617					.getPresences();
 618			if (!message.getConversation().hasValidOtrSession()) {
 619				if ((message.getPresence() != null)
 620						&& (presences.has(message.getPresence()))) {
 621					message.getConversation().startOtrSession(this,
 622							message.getPresence(), true);
 623				} else {
 624					if (presences.size() == 1) {
 625						String presence = presences.asStringArray()[0];
 626						message.getConversation().startOtrSession(this,
 627								presence, true);
 628					}
 629				}
 630			} else {
 631				if (message.getConversation().getOtrSession()
 632						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 633					if (message.getType() == Message.TYPE_TEXT) {
 634						packet = mMessageGenerator.generateOtrChat(message,
 635								true);
 636					} else if (message.getType() == Message.TYPE_IMAGE) {
 637						mJingleConnectionManager.createNewConnection(message);
 638					}
 639				}
 640			}
 641		} else if (message.getType() == Message.TYPE_TEXT) {
 642			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 643				packet = mMessageGenerator.generateChat(message, true);
 644			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 645					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 646				packet = mMessageGenerator.generatePgpChat(message, true);
 647			}
 648		} else if (message.getType() == Message.TYPE_IMAGE) {
 649			Presences presences = message.getConversation().getContact()
 650					.getPresences();
 651			if ((message.getPresence() != null)
 652					&& (presences.has(message.getPresence()))) {
 653				markMessage(message, Message.STATUS_OFFERED);
 654				mJingleConnectionManager.createNewConnection(message);
 655			} else {
 656				if (presences.size() == 1) {
 657					String presence = presences.asStringArray()[0];
 658					message.setPresence(presence);
 659					markMessage(message, Message.STATUS_OFFERED);
 660					mJingleConnectionManager.createNewConnection(message);
 661				}
 662			}
 663		}
 664		if (packet != null) {
 665			sendMessagePacket(account, packet);
 666			markMessage(message, Message.STATUS_SEND);
 667		}
 668	}
 669
 670	public void fetchRosterFromServer(Account account) {
 671		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 672		if (!"".equals(account.getRosterVersion())) {
 673			Log.d(Config.LOGTAG, account.getJid()
 674					+ ": fetching roster version " + account.getRosterVersion());
 675		} else {
 676			Log.d(Config.LOGTAG, account.getJid() + ": fetching roster");
 677		}
 678		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 679				account.getRosterVersion());
 680		account.getXmppConnection().sendIqPacket(iqPacket,
 681				new OnIqPacketReceived() {
 682
 683					@Override
 684					public void onIqPacketReceived(final Account account,
 685							IqPacket packet) {
 686						Element query = packet.findChild("query");
 687						if (query != null) {
 688							account.getRoster().markAllAsNotInRoster();
 689							mIqParser.rosterItems(account, query);
 690						}
 691					}
 692				});
 693	}
 694
 695	public void fetchBookmarks(Account account) {
 696		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 697		Element query = iqPacket.query("jabber:iq:private");
 698		query.addChild("storage", "storage:bookmarks");
 699		OnIqPacketReceived callback = new OnIqPacketReceived() {
 700
 701			@Override
 702			public void onIqPacketReceived(Account account, IqPacket packet) {
 703				Element query = packet.query();
 704				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 705				Element storage = query.findChild("storage",
 706						"storage:bookmarks");
 707				if (storage != null) {
 708					for (Element item : storage.getChildren()) {
 709						if (item.getName().equals("conference")) {
 710							Bookmark bookmark = Bookmark.parse(item, account);
 711							bookmarks.add(bookmark);
 712							Conversation conversation = find(bookmark);
 713							if (conversation != null) {
 714								conversation.setBookmark(bookmark);
 715							} else {
 716								if (bookmark.autojoin()) {
 717									conversation = findOrCreateConversation(
 718											account, bookmark.getJid(), true);
 719									conversation.setBookmark(bookmark);
 720									joinMuc(conversation);
 721								}
 722							}
 723						}
 724					}
 725				}
 726				account.setBookmarks(bookmarks);
 727			}
 728		};
 729		sendIqPacket(account, iqPacket, callback);
 730
 731	}
 732
 733	public void pushBookmarks(Account account) {
 734		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 735		Element query = iqPacket.query("jabber:iq:private");
 736		Element storage = query.addChild("storage", "storage:bookmarks");
 737		for (Bookmark bookmark : account.getBookmarks()) {
 738			storage.addChild(bookmark.toElement());
 739		}
 740		sendIqPacket(account, iqPacket, null);
 741	}
 742
 743	private void mergePhoneContactsWithRoster() {
 744		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 745				new OnPhoneContactsLoadedListener() {
 746					@Override
 747					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 748						for (Account account : accounts) {
 749							account.getRoster().clearSystemAccounts();
 750						}
 751						for (Bundle phoneContact : phoneContacts) {
 752							for (Account account : accounts) {
 753								String jid = phoneContact.getString("jid");
 754								Contact contact = account.getRoster()
 755										.getContact(jid);
 756								String systemAccount = phoneContact
 757										.getInt("phoneid")
 758										+ "#"
 759										+ phoneContact.getString("lookup");
 760								contact.setSystemAccount(systemAccount);
 761								contact.setPhotoUri(phoneContact
 762										.getString("photouri"));
 763								contact.setSystemName(phoneContact
 764										.getString("displayname"));
 765							}
 766						}
 767					}
 768				});
 769	}
 770
 771	public List<Conversation> getConversations() {
 772		if (this.conversations == null) {
 773			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 774			for (Account account : this.accounts) {
 775				accountLookupTable.put(account.getUuid(), account);
 776			}
 777			this.conversations = databaseBackend
 778					.getConversations(Conversation.STATUS_AVAILABLE);
 779			for (Conversation conv : this.conversations) {
 780				Account account = accountLookupTable.get(conv.getAccountUuid());
 781				conv.setAccount(account);
 782				conv.setMessages(databaseBackend.getMessages(conv, 50));
 783			}
 784		}
 785
 786		return this.conversations;
 787	}
 788
 789	public void populateWithOrderedConversations(List<Conversation> list) {
 790		populateWithOrderedConversations(list, true);
 791	}
 792
 793	public void populateWithOrderedConversations(List<Conversation> list,
 794			boolean includeConferences) {
 795		list.clear();
 796		if (includeConferences) {
 797			list.addAll(getConversations());
 798		} else {
 799			for (Conversation conversation : getConversations()) {
 800				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 801					list.add(conversation);
 802				}
 803			}
 804		}
 805		Collections.sort(list, new Comparator<Conversation>() {
 806			@Override
 807			public int compare(Conversation lhs, Conversation rhs) {
 808				Message left = lhs.getLatestMessage();
 809				Message right = rhs.getLatestMessage();
 810				if (left.getTimeSent() > right.getTimeSent()) {
 811					return -1;
 812				} else if (left.getTimeSent() < right.getTimeSent()) {
 813					return 1;
 814				} else {
 815					return 0;
 816				}
 817			}
 818		});
 819	}
 820
 821	public List<Message> getMoreMessages(Conversation conversation,
 822			long timestamp) {
 823		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 824				timestamp);
 825		for (Message message : messages) {
 826			message.setConversation(conversation);
 827		}
 828		return messages;
 829	}
 830
 831	public List<Account> getAccounts() {
 832		return this.accounts;
 833	}
 834
 835	public Conversation find(List<Conversation> haystack, Contact contact) {
 836		for (Conversation conversation : haystack) {
 837			if (conversation.getContact() == contact) {
 838				return conversation;
 839			}
 840		}
 841		return null;
 842	}
 843
 844	public Conversation find(List<Conversation> haystack, Account account,
 845			String jid) {
 846		for (Conversation conversation : haystack) {
 847			if ((conversation.getAccount().equals(account))
 848					&& (conversation.getContactJid().split("/")[0].equals(jid))) {
 849				return conversation;
 850			}
 851		}
 852		return null;
 853	}
 854
 855	public Conversation findOrCreateConversation(Account account, String jid,
 856			boolean muc) {
 857		Conversation conversation = find(account, jid);
 858		if (conversation != null) {
 859			return conversation;
 860		}
 861		conversation = databaseBackend.findConversation(account, jid);
 862		if (conversation != null) {
 863			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 864			conversation.setAccount(account);
 865			if (muc) {
 866				conversation.setMode(Conversation.MODE_MULTI);
 867			} else {
 868				conversation.setMode(Conversation.MODE_SINGLE);
 869			}
 870			conversation.setMessages(databaseBackend.getMessages(conversation,
 871					50));
 872			this.databaseBackend.updateConversation(conversation);
 873		} else {
 874			String conversationName;
 875			Contact contact = account.getRoster().getContact(jid);
 876			if (contact != null) {
 877				conversationName = contact.getDisplayName();
 878			} else {
 879				conversationName = jid.split("@")[0];
 880			}
 881			if (muc) {
 882				conversation = new Conversation(conversationName, account, jid,
 883						Conversation.MODE_MULTI);
 884			} else {
 885				conversation = new Conversation(conversationName, account, jid,
 886						Conversation.MODE_SINGLE);
 887			}
 888			this.databaseBackend.createConversation(conversation);
 889		}
 890		this.conversations.add(conversation);
 891		updateConversationUi();
 892		return conversation;
 893	}
 894
 895	public void archiveConversation(Conversation conversation) {
 896		if (conversation.getMode() == Conversation.MODE_MULTI) {
 897			Bookmark bookmark = conversation.getBookmark();
 898			if (bookmark != null && bookmark.autojoin()) {
 899				bookmark.setAutojoin(false);
 900				pushBookmarks(bookmark.getAccount());
 901			}
 902			leaveMuc(conversation);
 903		} else {
 904			conversation.endOtrIfNeeded();
 905		}
 906		this.databaseBackend.updateConversation(conversation);
 907		this.conversations.remove(conversation);
 908		updateConversationUi();
 909	}
 910
 911	public void clearConversationHistory(Conversation conversation) {
 912		this.databaseBackend.deleteMessagesInConversation(conversation);
 913		this.fileBackend.removeFiles(conversation);
 914		conversation.getMessages().clear();
 915		updateConversationUi();
 916	}
 917
 918	public int getConversationCount() {
 919		return this.databaseBackend.getConversationCount();
 920	}
 921
 922	public void createAccount(Account account) {
 923		databaseBackend.createAccount(account);
 924		this.accounts.add(account);
 925		this.reconnectAccount(account, false);
 926		updateAccountUi();
 927	}
 928
 929	public void updateAccount(Account account) {
 930		this.statusListener.onStatusChanged(account);
 931		databaseBackend.updateAccount(account);
 932		reconnectAccount(account, false);
 933		updateAccountUi();
 934		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 935	}
 936
 937	public void deleteAccount(Account account) {
 938		for (Conversation conversation : conversations) {
 939			if (conversation.getAccount() == account) {
 940				if (conversation.getMode() == Conversation.MODE_MULTI) {
 941					leaveMuc(conversation);
 942				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
 943					conversation.endOtrIfNeeded();
 944				}
 945				conversations.remove(conversation);
 946			}
 947		}
 948		if (account.getXmppConnection() != null) {
 949			this.disconnect(account, true);
 950		}
 951		databaseBackend.deleteAccount(account);
 952		this.accounts.remove(account);
 953		updateAccountUi();
 954		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 955	}
 956
 957	public void setOnConversationListChangedListener(
 958			OnConversationUpdate listener) {
 959		if (checkListeners()) {
 960			switchToForeground();
 961		}
 962		this.mOnConversationUpdate = listener;
 963		this.convChangedListenerCount++;
 964	}
 965
 966	public void removeOnConversationListChangedListener() {
 967		this.convChangedListenerCount--;
 968		if (this.convChangedListenerCount == 0) {
 969			this.mOnConversationUpdate = null;
 970			if (checkListeners()) {
 971				switchToBackground();
 972			}
 973		}
 974	}
 975
 976	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
 977		if (checkListeners()) {
 978			switchToForeground();
 979		}
 980		this.mOnAccountUpdate = listener;
 981		this.accountChangedListenerCount++;
 982	}
 983
 984	public void removeOnAccountListChangedListener() {
 985		this.accountChangedListenerCount--;
 986		if (this.accountChangedListenerCount == 0) {
 987			this.mOnAccountUpdate = null;
 988			if (checkListeners()) {
 989				switchToBackground();
 990			}
 991		}
 992	}
 993
 994	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
 995		if (checkListeners()) {
 996			switchToForeground();
 997		}
 998		this.mOnRosterUpdate = listener;
 999	}
1000
1001	public void removeOnRosterUpdateListener() {
1002		this.mOnRosterUpdate = null;
1003		if (checkListeners()) {
1004			switchToBackground();
1005		}
1006	}
1007
1008	private boolean checkListeners() {
1009		return (this.mOnAccountUpdate == null
1010				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1011	}
1012
1013	private void switchToForeground() {
1014		for (Account account : getAccounts()) {
1015			if (account.getStatus() == Account.STATUS_ONLINE) {
1016				XmppConnection connection = account.getXmppConnection();
1017				if (connection != null && connection.getFeatures().csi()) {
1018					connection.sendActive();
1019					Log.d(Config.LOGTAG, account.getJid()
1020							+ " sending csi//active");
1021				}
1022			}
1023		}
1024	}
1025
1026	private void switchToBackground() {
1027		for (Account account : getAccounts()) {
1028			if (account.getStatus() == Account.STATUS_ONLINE) {
1029				XmppConnection connection = account.getXmppConnection();
1030				if (connection != null && connection.getFeatures().csi()) {
1031					connection.sendInactive();
1032					Log.d(Config.LOGTAG, account.getJid()
1033							+ " sending csi//inactive");
1034				}
1035			}
1036		}
1037	}
1038
1039	public void connectMultiModeConversations(Account account) {
1040		List<Conversation> conversations = getConversations();
1041		for (int i = 0; i < conversations.size(); i++) {
1042			Conversation conversation = conversations.get(i);
1043			if ((conversation.getMode() == Conversation.MODE_MULTI)
1044					&& (conversation.getAccount() == account)) {
1045				joinMuc(conversation);
1046			}
1047		}
1048	}
1049
1050	public void joinMuc(Conversation conversation) {
1051		Account account = conversation.getAccount();
1052		account.pendingConferenceJoins.remove(conversation);
1053		account.pendingConferenceLeaves.remove(conversation);
1054		if (account.getStatus() == Account.STATUS_ONLINE) {
1055			Log.d(Config.LOGTAG,
1056					"joining conversation " + conversation.getContactJid());
1057			String nick = conversation.getMucOptions().getProposedNick();
1058			conversation.getMucOptions().setJoinNick(nick);
1059			PresencePacket packet = new PresencePacket();
1060			String joinJid = conversation.getMucOptions().getJoinJid();
1061			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1062			Element x = new Element("x");
1063			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1064			if (conversation.getMucOptions().getPassword() != null) {
1065				Element password = x.addChild("password");
1066				password.setContent(conversation.getMucOptions().getPassword());
1067			}
1068			String sig = account.getPgpSignature();
1069			if (sig != null) {
1070				packet.addChild("status").setContent("online");
1071				packet.addChild("x", "jabber:x:signed").setContent(sig);
1072			}
1073			if (conversation.getMessages().size() != 0) {
1074				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1075						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1076				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1077				Date date = new Date(conversation.getLatestMessage()
1078						.getTimeSent() + 1000);
1079				x.addChild("history").setAttribute("since",
1080						mDateFormat.format(date));
1081			}
1082			packet.addChild(x);
1083			sendPresencePacket(account, packet);
1084			if (!joinJid.equals(conversation.getContactJid())) {
1085				conversation.setContactJid(joinJid);
1086				databaseBackend.updateConversation(conversation);
1087			}
1088		} else {
1089			account.pendingConferenceJoins.add(conversation);
1090		}
1091	}
1092
1093	private OnRenameListener renameListener = null;
1094	private IqGenerator mIqGenerator = new IqGenerator();
1095
1096	public void setOnRenameListener(OnRenameListener listener) {
1097		this.renameListener = listener;
1098	}
1099
1100	public void providePasswordForMuc(Conversation conversation, String password) {
1101		if (conversation.getMode() == Conversation.MODE_MULTI) {
1102			conversation.getMucOptions().setPassword(password);
1103			if (conversation.getBookmark() != null
1104					&& conversation.getMucOptions().isPasswordChanged()) {
1105				if (!conversation.getBookmark().autojoin()) {
1106					conversation.getBookmark().setAutojoin(true);
1107				}
1108				pushBookmarks(conversation.getAccount());
1109			}
1110			joinMuc(conversation);
1111		}
1112	}
1113
1114	public void renameInMuc(final Conversation conversation, final String nick) {
1115		final MucOptions options = conversation.getMucOptions();
1116		options.setJoinNick(nick);
1117		if (options.online()) {
1118			Account account = conversation.getAccount();
1119			options.setOnRenameListener(new OnRenameListener() {
1120
1121				@Override
1122				public void onRename(boolean success) {
1123					if (renameListener != null) {
1124						renameListener.onRename(success);
1125					}
1126					if (success) {
1127						conversation.setContactJid(conversation.getMucOptions()
1128								.getJoinJid());
1129						databaseBackend.updateConversation(conversation);
1130						Bookmark bookmark = conversation.getBookmark();
1131						if (bookmark != null) {
1132							bookmark.setNick(nick);
1133							pushBookmarks(bookmark.getAccount());
1134						}
1135					}
1136				}
1137			});
1138			options.flagAboutToRename();
1139			PresencePacket packet = new PresencePacket();
1140			packet.setAttribute("to", options.getJoinJid());
1141			packet.setAttribute("from", conversation.getAccount().getFullJid());
1142
1143			String sig = account.getPgpSignature();
1144			if (sig != null) {
1145				packet.addChild("status").setContent("online");
1146				packet.addChild("x", "jabber:x:signed").setContent(sig);
1147			}
1148			sendPresencePacket(account, packet);
1149		} else {
1150			conversation.setContactJid(options.getJoinJid());
1151			databaseBackend.updateConversation(conversation);
1152			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1153				Bookmark bookmark = conversation.getBookmark();
1154				if (bookmark != null) {
1155					bookmark.setNick(nick);
1156					pushBookmarks(bookmark.getAccount());
1157				}
1158				joinMuc(conversation);
1159			}
1160		}
1161	}
1162
1163	public void leaveMuc(Conversation conversation) {
1164		Account account = conversation.getAccount();
1165		account.pendingConferenceJoins.remove(conversation);
1166		account.pendingConferenceLeaves.remove(conversation);
1167		if (account.getStatus() == Account.STATUS_ONLINE) {
1168			PresencePacket packet = new PresencePacket();
1169			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1170			packet.setAttribute("from", conversation.getAccount().getFullJid());
1171			packet.setAttribute("type", "unavailable");
1172			sendPresencePacket(conversation.getAccount(), packet);
1173			conversation.getMucOptions().setOffline();
1174			conversation.deregisterWithBookmark();
1175			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1176					+ " leaving muc " + conversation.getContactJid());
1177		} else {
1178			account.pendingConferenceLeaves.add(conversation);
1179		}
1180	}
1181
1182	public void disconnect(Account account, boolean force) {
1183		if ((account.getStatus() == Account.STATUS_ONLINE)
1184				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1185			if (!force) {
1186				List<Conversation> conversations = getConversations();
1187				for (int i = 0; i < conversations.size(); i++) {
1188					Conversation conversation = conversations.get(i);
1189					if (conversation.getAccount() == account) {
1190						if (conversation.getMode() == Conversation.MODE_MULTI) {
1191							leaveMuc(conversation);
1192						} else {
1193							conversation.endOtrIfNeeded();
1194						}
1195					}
1196				}
1197			}
1198			account.getXmppConnection().disconnect(force);
1199		}
1200	}
1201
1202	@Override
1203	public IBinder onBind(Intent intent) {
1204		return mBinder;
1205	}
1206
1207	public void updateMessage(Message message) {
1208		databaseBackend.updateMessage(message);
1209	}
1210
1211	protected void syncDirtyContacts(Account account) {
1212		for (Contact contact : account.getRoster().getContacts()) {
1213			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1214				pushContactToServer(contact);
1215			}
1216			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1217				deleteContactOnServer(contact);
1218			}
1219		}
1220	}
1221
1222	public void createContact(Contact contact) {
1223		SharedPreferences sharedPref = getPreferences();
1224		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1225		if (autoGrant) {
1226			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1227			contact.setOption(Contact.Options.ASKING);
1228		}
1229		pushContactToServer(contact);
1230	}
1231
1232	public void onOtrSessionEstablished(Conversation conversation) {
1233		Account account = conversation.getAccount();
1234		List<Message> messages = conversation.getMessages();
1235		Session otrSession = conversation.getOtrSession();
1236		Log.d(Config.LOGTAG,
1237				account.getJid() + " otr session established with "
1238						+ conversation.getContactJid() + "/"
1239						+ otrSession.getSessionID().getUserID());
1240		for (int i = 0; i < messages.size(); ++i) {
1241			Message msg = messages.get(i);
1242			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1243					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1244				msg.setPresence(otrSession.getSessionID().getUserID());
1245				if (msg.getType() == Message.TYPE_TEXT) {
1246					MessagePacket outPacket = mMessageGenerator
1247							.generateOtrChat(msg, true);
1248					if (outPacket != null) {
1249						msg.setStatus(Message.STATUS_SEND);
1250						databaseBackend.updateMessage(msg);
1251						sendMessagePacket(account, outPacket);
1252					}
1253				} else if (msg.getType() == Message.TYPE_IMAGE) {
1254					mJingleConnectionManager.createNewConnection(msg);
1255				}
1256			}
1257		}
1258		notifyUi(conversation, false);
1259	}
1260
1261	public boolean renewSymmetricKey(Conversation conversation) {
1262		Account account = conversation.getAccount();
1263		byte[] symmetricKey = new byte[32];
1264		this.mRandom.nextBytes(symmetricKey);
1265		Session otrSession = conversation.getOtrSession();
1266		if (otrSession != null) {
1267			MessagePacket packet = new MessagePacket();
1268			packet.setType(MessagePacket.TYPE_CHAT);
1269			packet.setFrom(account.getFullJid());
1270			packet.addChild("private", "urn:xmpp:carbons:2");
1271			packet.addChild("no-copy", "urn:xmpp:hints");
1272			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1273					+ otrSession.getSessionID().getUserID());
1274			try {
1275				packet.setBody(otrSession
1276						.transformSending(CryptoHelper.FILETRANSFER
1277								+ CryptoHelper.bytesToHex(symmetricKey)));
1278				sendMessagePacket(account, packet);
1279				conversation.setSymmetricKey(symmetricKey);
1280				return true;
1281			} catch (OtrException e) {
1282				return false;
1283			}
1284		}
1285		return false;
1286	}
1287
1288	public void pushContactToServer(Contact contact) {
1289		contact.resetOption(Contact.Options.DIRTY_DELETE);
1290		contact.setOption(Contact.Options.DIRTY_PUSH);
1291		Account account = contact.getAccount();
1292		if (account.getStatus() == Account.STATUS_ONLINE) {
1293			boolean ask = contact.getOption(Contact.Options.ASKING);
1294			boolean sendUpdates = contact
1295					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1296					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1297			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1298			iq.query("jabber:iq:roster").addChild(contact.asElement());
1299			account.getXmppConnection().sendIqPacket(iq, null);
1300			if (sendUpdates) {
1301				sendPresencePacket(account,
1302						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1303			}
1304			if (ask) {
1305				sendPresencePacket(account,
1306						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1307			}
1308		}
1309	}
1310
1311	public void publishAvatar(Account account, Uri image,
1312			final UiCallback<Avatar> callback) {
1313		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1314		final int size = Config.AVATAR_SIZE;
1315		final Avatar avatar = getFileBackend()
1316				.getPepAvatar(image, size, format);
1317		if (avatar != null) {
1318			avatar.height = size;
1319			avatar.width = size;
1320			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1321				avatar.type = "image/webp";
1322			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1323				avatar.type = "image/jpeg";
1324			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1325				avatar.type = "image/png";
1326			}
1327			if (!getFileBackend().save(avatar)) {
1328				callback.error(R.string.error_saving_avatar, avatar);
1329				return;
1330			}
1331			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1332			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1333
1334				@Override
1335				public void onIqPacketReceived(Account account, IqPacket result) {
1336					if (result.getType() == IqPacket.TYPE_RESULT) {
1337						IqPacket packet = XmppConnectionService.this.mIqGenerator
1338								.publishAvatarMetadata(avatar);
1339						sendIqPacket(account, packet, new OnIqPacketReceived() {
1340
1341							@Override
1342							public void onIqPacketReceived(Account account,
1343									IqPacket result) {
1344								if (result.getType() == IqPacket.TYPE_RESULT) {
1345									if (account.setAvatar(avatar.getFilename())) {
1346										databaseBackend.updateAccount(account);
1347									}
1348									callback.success(avatar);
1349								} else {
1350									callback.error(
1351											R.string.error_publish_avatar_server_reject,
1352											avatar);
1353								}
1354							}
1355						});
1356					} else {
1357						callback.error(
1358								R.string.error_publish_avatar_server_reject,
1359								avatar);
1360					}
1361				}
1362			});
1363		} else {
1364			callback.error(R.string.error_publish_avatar_converting, null);
1365		}
1366	}
1367
1368	public void fetchAvatar(Account account, Avatar avatar) {
1369		fetchAvatar(account, avatar, null);
1370	}
1371
1372	public void fetchAvatar(Account account, final Avatar avatar,
1373			final UiCallback<Avatar> callback) {
1374		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1375		sendIqPacket(account, packet, new OnIqPacketReceived() {
1376
1377			@Override
1378			public void onIqPacketReceived(Account account, IqPacket result) {
1379				final String ERROR = account.getJid()
1380						+ ": fetching avatar for " + avatar.owner + " failed ";
1381				if (result.getType() == IqPacket.TYPE_RESULT) {
1382					avatar.image = mIqParser.avatarData(result);
1383					if (avatar.image != null) {
1384						if (getFileBackend().save(avatar)) {
1385							if (account.getJid().equals(avatar.owner)) {
1386								if (account.setAvatar(avatar.getFilename())) {
1387									databaseBackend.updateAccount(account);
1388								}
1389							} else {
1390								Contact contact = account.getRoster()
1391										.getContact(avatar.owner);
1392								contact.setAvatar(avatar.getFilename());
1393							}
1394							if (callback != null) {
1395								callback.success(avatar);
1396							}
1397							Log.d(Config.LOGTAG, account.getJid()
1398									+ ": succesfully fetched avatar for "
1399									+ avatar.owner);
1400							return;
1401						}
1402					} else {
1403
1404						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1405					}
1406				} else {
1407					Element error = result.findChild("error");
1408					if (error == null) {
1409						Log.d(Config.LOGTAG, ERROR + "(server error)");
1410					} else {
1411						Log.d(Config.LOGTAG, ERROR + error.toString());
1412					}
1413				}
1414				if (callback != null) {
1415					callback.error(0, null);
1416				}
1417
1418			}
1419		});
1420	}
1421
1422	public void checkForAvatar(Account account,
1423			final UiCallback<Avatar> callback) {
1424		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1425		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1426
1427			@Override
1428			public void onIqPacketReceived(Account account, IqPacket packet) {
1429				if (packet.getType() == IqPacket.TYPE_RESULT) {
1430					Element pubsub = packet.findChild("pubsub",
1431							"http://jabber.org/protocol/pubsub");
1432					if (pubsub != null) {
1433						Element items = pubsub.findChild("items");
1434						if (items != null) {
1435							Avatar avatar = Avatar.parseMetadata(items);
1436							if (avatar != null) {
1437								avatar.owner = account.getJid();
1438								if (fileBackend.isAvatarCached(avatar)) {
1439									if (account.setAvatar(avatar.getFilename())) {
1440										databaseBackend.updateAccount(account);
1441									}
1442									callback.success(avatar);
1443								} else {
1444									fetchAvatar(account, avatar, callback);
1445								}
1446								return;
1447							}
1448						}
1449					}
1450				}
1451				callback.error(0, null);
1452			}
1453		});
1454	}
1455
1456	public void deleteContactOnServer(Contact contact) {
1457		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1458		contact.resetOption(Contact.Options.DIRTY_PUSH);
1459		contact.setOption(Contact.Options.DIRTY_DELETE);
1460		Account account = contact.getAccount();
1461		if (account.getStatus() == Account.STATUS_ONLINE) {
1462			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1463			Element item = iq.query("jabber:iq:roster").addChild("item");
1464			item.setAttribute("jid", contact.getJid());
1465			item.setAttribute("subscription", "remove");
1466			account.getXmppConnection().sendIqPacket(iq, null);
1467		}
1468	}
1469
1470	public void updateConversation(Conversation conversation) {
1471		this.databaseBackend.updateConversation(conversation);
1472	}
1473
1474	public void reconnectAccount(final Account account, final boolean force) {
1475		new Thread(new Runnable() {
1476
1477			@Override
1478			public void run() {
1479				if (account.getXmppConnection() != null) {
1480					disconnect(account, force);
1481				}
1482				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1483					if (account.getXmppConnection() == null) {
1484						account.setXmppConnection(createConnection(account));
1485					}
1486					Thread thread = new Thread(account.getXmppConnection());
1487					thread.start();
1488					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1489							false);
1490				}
1491			}
1492		}).start();
1493	}
1494
1495	public void invite(Conversation conversation, String contact) {
1496		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1497		sendMessagePacket(conversation.getAccount(), packet);
1498	}
1499
1500	public void resetSendingToWaiting(Account account) {
1501		for (Conversation conversation : getConversations()) {
1502			if (conversation.getAccount() == account) {
1503				for (Message message : conversation.getMessages()) {
1504					if (message.getStatus() == Message.STATUS_UNSEND) {
1505						markMessage(message, Message.STATUS_WAITING);
1506					}
1507				}
1508			}
1509		}
1510	}
1511
1512	public boolean markMessage(Account account, String recipient, String uuid,
1513			int status) {
1514		for (Conversation conversation : getConversations()) {
1515			if (conversation.getContactJid().equals(recipient)
1516					&& conversation.getAccount().equals(account)) {
1517				return markMessage(conversation, uuid, status);
1518			}
1519		}
1520		return false;
1521	}
1522
1523	public boolean markMessage(Conversation conversation, String uuid,
1524			int status) {
1525		for (Message message : conversation.getMessages()) {
1526			if (message.getUuid().equals(uuid)) {
1527				markMessage(message, status);
1528				return true;
1529			}
1530		}
1531		return false;
1532	}
1533
1534	public void markMessage(Message message, int status) {
1535		if (status == Message.STATUS_SEND_FAILED
1536				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1537						.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1538			return;
1539		}
1540		message.setStatus(status);
1541		databaseBackend.updateMessage(message);
1542		updateConversationUi();
1543	}
1544
1545	public SharedPreferences getPreferences() {
1546		return PreferenceManager
1547				.getDefaultSharedPreferences(getApplicationContext());
1548	}
1549	
1550	public boolean forceEncryption() {
1551		return getPreferences().getBoolean("force_encryption", false);
1552	}
1553
1554	public boolean confirmMessages() {
1555		return getPreferences().getBoolean("confirm_messages", true);
1556	}
1557	
1558	public boolean saveEncryptedMessages() {
1559		return !getPreferences().getBoolean("dont_save_encrypted", false);
1560	}
1561
1562	public void notifyUi(Conversation conversation, boolean notify) {
1563		if (mOnConversationUpdate != null) {
1564			mOnConversationUpdate.onConversationUpdate();
1565		} else {
1566			UIHelper.updateNotification(getApplicationContext(),
1567					getConversations(), conversation, notify);
1568		}
1569	}
1570
1571	public void updateConversationUi() {
1572		if (mOnConversationUpdate != null) {
1573			mOnConversationUpdate.onConversationUpdate();
1574		}
1575	}
1576
1577	public void updateAccountUi() {
1578		if (mOnAccountUpdate != null) {
1579			mOnAccountUpdate.onAccountUpdate();
1580		}
1581	}
1582
1583	public void updateRosterUi() {
1584		if (mOnRosterUpdate != null) {
1585			mOnRosterUpdate.onRosterUpdate();
1586		}
1587	}
1588
1589	public Account findAccountByJid(String accountJid) {
1590		for (Account account : this.accounts) {
1591			if (account.getJid().equals(accountJid)) {
1592				return account;
1593			}
1594		}
1595		return null;
1596	}
1597
1598	public Conversation findConversationByUuid(String uuid) {
1599		for (Conversation conversation : getConversations()) {
1600			if (conversation.getUuid().equals(uuid)) {
1601				return conversation;
1602			}
1603		}
1604		return null;
1605	}
1606
1607	public void markRead(Conversation conversation) {
1608		conversation.markRead();
1609		String id = conversation.popLatestMarkableMessageId();
1610		if (confirmMessages() && id != null) {
1611			Account account = conversation.getAccount();
1612			String to = conversation.getContactJid();
1613			this.sendMessagePacket(conversation.getAccount(),
1614					mMessageGenerator.confirm(account, to, id));
1615		}
1616	}
1617
1618	public void failWaitingOtrMessages(Conversation conversation) {
1619		for (Message message : conversation.getMessages()) {
1620			if (message.getEncryption() == Message.ENCRYPTION_OTR
1621					&& message.getStatus() == Message.STATUS_WAITING) {
1622				markMessage(message, Message.STATUS_SEND_FAILED);
1623			}
1624		}
1625	}
1626
1627	public SecureRandom getRNG() {
1628		return this.mRandom;
1629	}
1630
1631	public MemorizingTrustManager getMemorizingTrustManager() {
1632		return this.mMemorizingTrustManager;
1633	}
1634
1635	public PowerManager getPowerManager() {
1636		return this.pm;
1637	}
1638
1639	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1640		if (account.getStatus() == Account.STATUS_ONLINE) {
1641			MessagePacket error = this.mMessageGenerator
1642					.generateNotAcceptable(packet);
1643			sendMessagePacket(account, error);
1644		}
1645	}
1646
1647	public void syncRosterToDisk(final Account account) {
1648		new Thread(new Runnable() {
1649
1650			@Override
1651			public void run() {
1652				databaseBackend.writeRoster(account.getRoster());
1653			}
1654		}).start();
1655
1656	}
1657
1658	public List<String> getKnownHosts() {
1659		List<String> hosts = new ArrayList<String>();
1660		for (Account account : getAccounts()) {
1661			if (!hosts.contains(account.getServer())) {
1662				hosts.add(account.getServer());
1663			}
1664			for (Contact contact : account.getRoster().getContacts()) {
1665				if (contact.showInRoster()) {
1666					String server = contact.getServer();
1667					if (server != null && !hosts.contains(server)) {
1668						hosts.add(server);
1669					}
1670				}
1671			}
1672		}
1673		return hosts;
1674	}
1675
1676	public List<String> getKnownConferenceHosts() {
1677		ArrayList<String> mucServers = new ArrayList<String>();
1678		for (Account account : accounts) {
1679			if (account.getXmppConnection() != null) {
1680				String server = account.getXmppConnection().getMucServer();
1681				if (server != null && !mucServers.contains(server)) {
1682					mucServers.add(server);
1683				}
1684			}
1685		}
1686		return mucServers;
1687	}
1688
1689	public void sendMessagePacket(Account account, MessagePacket packet) {
1690		account.getXmppConnection().sendMessagePacket(packet);
1691	}
1692
1693	public void sendPresencePacket(Account account, PresencePacket packet) {
1694		account.getXmppConnection().sendPresencePacket(packet);
1695	}
1696
1697	public void sendIqPacket(Account account, IqPacket packet,
1698			OnIqPacketReceived callback) {
1699		account.getXmppConnection().sendIqPacket(packet, callback);
1700	}
1701
1702	public MessageGenerator getMessageGenerator() {
1703		return this.mMessageGenerator;
1704	}
1705
1706	public PresenceGenerator getPresenceGenerator() {
1707		return this.mPresenceGenerator;
1708	}
1709
1710	public IqGenerator getIqGenerator() {
1711		return this.mIqGenerator;
1712	}
1713
1714	public JingleConnectionManager getJingleConnectionManager() {
1715		return this.mJingleConnectionManager;
1716	}
1717
1718	public interface OnConversationUpdate {
1719		public void onConversationUpdate();
1720	}
1721
1722	public interface OnAccountUpdate {
1723		public void onAccountUpdate();
1724	}
1725
1726	public interface OnRosterUpdate {
1727		public void onRosterUpdate();
1728	}
1729}