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