XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.security.SecureRandom;
   4import java.text.SimpleDateFormat;
   5import java.util.ArrayList;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.TimeZone;
  13import java.util.concurrent.CopyOnWriteArrayList;
  14
  15import org.openintents.openpgp.util.OpenPgpApi;
  16import org.openintents.openpgp.util.OpenPgpServiceConnection;
  17
  18import de.duenndns.ssl.MemorizingTrustManager;
  19
  20import net.java.otr4j.OtrException;
  21import net.java.otr4j.session.Session;
  22import net.java.otr4j.session.SessionStatus;
  23import eu.siacs.conversations.R;
  24import eu.siacs.conversations.crypto.PgpEngine;
  25import eu.siacs.conversations.entities.Account;
  26import eu.siacs.conversations.entities.Bookmark;
  27import eu.siacs.conversations.entities.Contact;
  28import eu.siacs.conversations.entities.Conversation;
  29import eu.siacs.conversations.entities.Message;
  30import eu.siacs.conversations.entities.MucOptions;
  31import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  32import eu.siacs.conversations.entities.Presences;
  33import eu.siacs.conversations.generator.IqGenerator;
  34import eu.siacs.conversations.generator.MessageGenerator;
  35import eu.siacs.conversations.generator.PresenceGenerator;
  36import eu.siacs.conversations.parser.IqParser;
  37import eu.siacs.conversations.parser.MessageParser;
  38import eu.siacs.conversations.parser.PresenceParser;
  39import eu.siacs.conversations.persistance.DatabaseBackend;
  40import eu.siacs.conversations.persistance.FileBackend;
  41import eu.siacs.conversations.ui.UiCallback;
  42import eu.siacs.conversations.utils.CryptoHelper;
  43import eu.siacs.conversations.utils.ExceptionHelper;
  44import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  45import eu.siacs.conversations.utils.PRNGFixes;
  46import eu.siacs.conversations.utils.PhoneHelper;
  47import eu.siacs.conversations.utils.UIHelper;
  48import eu.siacs.conversations.xml.Element;
  49import eu.siacs.conversations.xmpp.OnBindListener;
  50import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  51import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  52import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  53import eu.siacs.conversations.xmpp.OnStatusChanged;
  54import eu.siacs.conversations.xmpp.XmppConnection;
  55import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  56import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  57import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  58import eu.siacs.conversations.xmpp.pep.Avatar;
  59import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  60import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  61import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  62import android.annotation.SuppressLint;
  63import android.app.AlarmManager;
  64import android.app.PendingIntent;
  65import android.app.Service;
  66import android.content.Context;
  67import android.content.Intent;
  68import android.content.SharedPreferences;
  69import android.database.ContentObserver;
  70import android.graphics.Bitmap;
  71import android.net.ConnectivityManager;
  72import android.net.NetworkInfo;
  73import android.net.Uri;
  74import android.os.Binder;
  75import android.os.Bundle;
  76import android.os.IBinder;
  77import android.os.PowerManager;
  78import android.os.PowerManager.WakeLock;
  79import android.os.SystemClock;
  80import android.preference.PreferenceManager;
  81import android.provider.ContactsContract;
  82import android.util.Log;
  83
  84public class XmppConnectionService extends Service {
  85
  86	protected static final String LOGTAG = "xmppService";
  87	public DatabaseBackend databaseBackend;
  88	private FileBackend fileBackend;
  89
  90	public long startDate;
  91
  92	private static final int PING_MAX_INTERVAL = 300;
  93	private static final int PING_MIN_INTERVAL = 30;
  94	private static final int PING_TIMEOUT = 10;
  95	private static final int CONNECT_TIMEOUT = 90;
  96	public static final long CARBON_GRACE_PERIOD = 60000L;
  97
  98	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  99
 100	private MemorizingTrustManager mMemorizingTrustManager;
 101
 102	private MessageParser mMessageParser = new MessageParser(this);
 103	private PresenceParser mPresenceParser = new PresenceParser(this);
 104	private IqParser mIqParser = new IqParser(this);
 105	private MessageGenerator mMessageGenerator = new MessageGenerator();
 106	private PresenceGenerator mPresenceGenerator = new PresenceGenerator();
 107
 108	private List<Account> accounts;
 109	private CopyOnWriteArrayList<Conversation> conversations = null;
 110	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 111			this);
 112
 113	private OnConversationUpdate mOnConversationUpdate = null;
 114	private int convChangedListenerCount = 0;
 115	private OnAccountUpdate mOnAccountUpdate = null;
 116	private int accountChangedListenerCount = 0;
 117	private OnRosterUpdate mOnRosterUpdate = null;
 118	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 119
 120		@Override
 121		public void onContactStatusChanged(Contact contact, boolean online) {
 122			Conversation conversation = find(getConversations(), contact);
 123			if (conversation != null) {
 124				conversation.endOtrIfNeeded();
 125				if (online && (contact.getPresences().size() == 1)) {
 126					sendUnsendMessages(conversation);
 127				}
 128			}
 129		}
 130	};
 131
 132	private SecureRandom mRandom;
 133
 134	private ContentObserver contactObserver = new ContentObserver(null) {
 135		@Override
 136		public void onChange(boolean selfChange) {
 137			super.onChange(selfChange);
 138			Intent intent = new Intent(getApplicationContext(),
 139					XmppConnectionService.class);
 140			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 141			startService(intent);
 142		}
 143	};
 144
 145	private final IBinder mBinder = new XmppConnectionBinder();
 146	private OnStatusChanged statusListener = new OnStatusChanged() {
 147
 148		@Override
 149		public void onStatusChanged(Account account) {
 150			if (mOnAccountUpdate != null) {
 151				mOnAccountUpdate.onAccountUpdate();
 152				;
 153			}
 154			if (account.getStatus() == Account.STATUS_ONLINE) {
 155				for (Conversation conversation : account.pendingConferenceLeaves) {
 156					leaveMuc(conversation);
 157				}
 158				for (Conversation conversation : account.pendingConferenceJoins) {
 159					joinMuc(conversation);
 160				}
 161				mJingleConnectionManager.cancelInTransmission();
 162				List<Conversation> conversations = getConversations();
 163				for (int i = 0; i < conversations.size(); ++i) {
 164					if (conversations.get(i).getAccount() == account) {
 165						conversations.get(i).startOtrIfNeeded();
 166						sendUnsendMessages(conversations.get(i));
 167					}
 168				}
 169				syncDirtyContacts(account);
 170				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 171			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 172				resetSendingToWaiting(account);
 173				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 174					int timeToReconnect = mRandom.nextInt(50) + 10;
 175					scheduleWakeupCall(timeToReconnect, false);
 176				}
 177			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 178				databaseBackend.updateAccount(account);
 179				reconnectAccount(account, true);
 180			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 181					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 182				XmppConnection connection = account.getXmppConnection();
 183				if (connection != null) {
 184					int next = connection.getTimeToNextAttempt();
 185					Log.d(LOGTAG, account.getJid()
 186							+ ": error connecting account. try again in "
 187							+ next + "s for the "
 188							+ (connection.getAttempt() + 1) + " time");
 189					scheduleWakeupCall((int) (next * 1.2), false);
 190				}
 191			}
 192			UIHelper.showErrorNotification(getApplicationContext(),
 193					getAccounts());
 194		}
 195	};
 196
 197	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 198
 199		@Override
 200		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 201			mJingleConnectionManager.deliverPacket(account, packet);
 202		}
 203	};
 204
 205	private OpenPgpServiceConnection pgpServiceConnection;
 206	private PgpEngine mPgpEngine = null;
 207	private Intent pingIntent;
 208	private PendingIntent pendingPingIntent = null;
 209	private WakeLock wakeLock;
 210	private PowerManager pm;
 211	private OnBindListener mOnBindListener = new OnBindListener() {
 212
 213		@Override
 214		public void onBind(final Account account) {
 215			account.getRoster().clearPresences();
 216			account.clearPresences(); // self presences
 217			account.pendingConferenceJoins.clear();
 218			account.pendingConferenceLeaves.clear();
 219			fetchRosterFromServer(account);
 220			fetchBookmarks(account);
 221			sendPresencePacket(account,
 222					mPresenceGenerator.sendPresence(account));
 223			connectMultiModeConversations(account);
 224			updateConversationUi();
 225		}
 226	};
 227
 228	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 229
 230		@Override
 231		public void onMessageAcknowledged(Account account, String uuid) {
 232			for (Conversation conversation : getConversations()) {
 233				if (conversation.getAccount() == account) {
 234					for (Message message : conversation.getMessages()) {
 235						if ((message.getStatus() == Message.STATUS_UNSEND || message
 236								.getStatus() == Message.STATUS_WAITING)
 237								&& message.getUuid().equals(uuid)) {
 238							markMessage(message, Message.STATUS_SEND);
 239							return;
 240						}
 241					}
 242				}
 243			}
 244		}
 245	};
 246
 247	public PgpEngine getPgpEngine() {
 248		if (pgpServiceConnection.isBound()) {
 249			if (this.mPgpEngine == null) {
 250				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 251						getApplicationContext(),
 252						pgpServiceConnection.getService()), this);
 253			}
 254			return mPgpEngine;
 255		} else {
 256			return null;
 257		}
 258
 259	}
 260
 261	public FileBackend getFileBackend() {
 262		return this.fileBackend;
 263	}
 264
 265	public Message attachImageToConversation(final Conversation conversation,
 266			final Uri uri, final UiCallback<Message> callback) {
 267		final Message message;
 268		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 269			message = new Message(conversation, "",
 270					Message.ENCRYPTION_DECRYPTED);
 271		} else {
 272			message = new Message(conversation, "",
 273					conversation.getNextEncryption());
 274		}
 275		message.setPresence(conversation.getNextPresence());
 276		message.setType(Message.TYPE_IMAGE);
 277		message.setStatus(Message.STATUS_OFFERED);
 278		new Thread(new Runnable() {
 279
 280			@Override
 281			public void run() {
 282				try {
 283					getFileBackend().copyImageToPrivateStorage(message, uri);
 284					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 285						getPgpEngine().encrypt(message, callback);
 286					} else {
 287						callback.success(message);
 288					}
 289				} catch (FileBackend.ImageCopyException e) {
 290					callback.error(e.getResId(), message);
 291				}
 292			}
 293		}).start();
 294		return message;
 295	}
 296
 297	public Conversation find(Bookmark bookmark) {
 298		return find(bookmark.getAccount(), bookmark.getJid());
 299	}
 300
 301	public Conversation find(Account account, String jid) {
 302		return find(getConversations(), account, jid);
 303	}
 304
 305	public class XmppConnectionBinder extends Binder {
 306		public XmppConnectionService getService() {
 307			return XmppConnectionService.this;
 308		}
 309	}
 310
 311	@Override
 312	public int onStartCommand(Intent intent, int flags, int startId) {
 313		if ((intent != null)
 314				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 315			mergePhoneContactsWithRoster();
 316			return START_STICKY;
 317		} else if ((intent != null)
 318				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 319			logoutAndSave();
 320			return START_NOT_STICKY;
 321		}
 322		this.wakeLock.acquire();
 323		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 324				.getSystemService(Context.CONNECTIVITY_SERVICE);
 325		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 326		boolean isConnected = activeNetwork != null
 327				&& activeNetwork.isConnected();
 328
 329		for (Account account : accounts) {
 330			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 331				if (!isConnected) {
 332					account.setStatus(Account.STATUS_NO_INTERNET);
 333					if (statusListener != null) {
 334						statusListener.onStatusChanged(account);
 335					}
 336				} else {
 337					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 338						account.setStatus(Account.STATUS_OFFLINE);
 339						if (statusListener != null) {
 340							statusListener.onStatusChanged(account);
 341						}
 342					}
 343					if (account.getStatus() == Account.STATUS_ONLINE) {
 344						long lastReceived = account.getXmppConnection()
 345								.getLastPacketReceived();
 346						long lastSent = account.getXmppConnection()
 347								.getLastPingSent();
 348						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 349							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 350							this.reconnectAccount(account, true);
 351						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 352							account.getXmppConnection().sendPing();
 353							this.scheduleWakeupCall(2, false);
 354						}
 355					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 356						if (account.getXmppConnection() == null) {
 357							account.setXmppConnection(this
 358									.createConnection(account));
 359						}
 360						new Thread(account.getXmppConnection()).start();
 361					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 362							&& ((SystemClock.elapsedRealtime() - account
 363									.getXmppConnection().getLastConnect()) / 1000 >= CONNECT_TIMEOUT)) {
 364						Log.d(LOGTAG, account.getJid()
 365								+ ": time out during connect reconnecting");
 366						reconnectAccount(account, true);
 367					} else {
 368						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 369							reconnectAccount(account, true);
 370						}
 371					}
 372					// in any case. reschedule wakup call
 373					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 374				}
 375				if (mOnAccountUpdate != null) {
 376					mOnAccountUpdate.onAccountUpdate();
 377				}
 378			}
 379		}
 380		if (wakeLock.isHeld()) {
 381			try {
 382				wakeLock.release();
 383			} catch (RuntimeException re) {
 384			}
 385		}
 386		return START_STICKY;
 387	}
 388
 389	@SuppressLint("TrulyRandom")
 390	@Override
 391	public void onCreate() {
 392		ExceptionHelper.init(getApplicationContext());
 393		PRNGFixes.apply();
 394		this.mRandom = new SecureRandom();
 395		this.mMemorizingTrustManager = new MemorizingTrustManager(
 396				getApplicationContext());
 397		this.databaseBackend = DatabaseBackend
 398				.getInstance(getApplicationContext());
 399		this.fileBackend = new FileBackend(getApplicationContext());
 400		this.accounts = databaseBackend.getAccounts();
 401
 402		for (Account account : this.accounts) {
 403			this.databaseBackend.readRoster(account.getRoster());
 404		}
 405		this.mergePhoneContactsWithRoster();
 406		this.getConversations();
 407
 408		getContentResolver().registerContentObserver(
 409				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 410		this.pgpServiceConnection = new OpenPgpServiceConnection(
 411				getApplicationContext(), "org.sufficientlysecure.keychain");
 412		this.pgpServiceConnection.bindToService();
 413
 414		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 415		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 416				"XmppConnectionService");
 417	}
 418
 419	@Override
 420	public void onDestroy() {
 421		super.onDestroy();
 422		this.logoutAndSave();
 423	}
 424
 425	@Override
 426	public void onTaskRemoved(Intent rootIntent) {
 427		super.onTaskRemoved(rootIntent);
 428		this.logoutAndSave();
 429	}
 430
 431	private void logoutAndSave() {
 432		for (Account account : accounts) {
 433			databaseBackend.writeRoster(account.getRoster());
 434			if (account.getXmppConnection() != null) {
 435				disconnect(account, false);
 436			}
 437		}
 438		Context context = getApplicationContext();
 439		AlarmManager alarmManager = (AlarmManager) context
 440				.getSystemService(Context.ALARM_SERVICE);
 441		Intent intent = new Intent(context, EventReceiver.class);
 442		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 443		Log.d(LOGTAG, "good bye");
 444		stopSelf();
 445	}
 446
 447	protected void scheduleWakeupCall(int seconds, boolean ping) {
 448		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 449		Context context = getApplicationContext();
 450		AlarmManager alarmManager = (AlarmManager) context
 451				.getSystemService(Context.ALARM_SERVICE);
 452
 453		if (ping) {
 454			if (this.pingIntent == null) {
 455				this.pingIntent = new Intent(context, EventReceiver.class);
 456				this.pingIntent.setAction("ping");
 457				this.pingIntent.putExtra("time", timeToWake);
 458				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 459						this.pingIntent, 0);
 460				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 461						timeToWake, pendingPingIntent);
 462			} else {
 463				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 464				if (scheduledTime < SystemClock.elapsedRealtime()
 465						|| (scheduledTime > timeToWake)) {
 466					this.pingIntent.putExtra("time", timeToWake);
 467					alarmManager.cancel(this.pendingPingIntent);
 468					this.pendingPingIntent = PendingIntent.getBroadcast(
 469							context, 0, this.pingIntent, 0);
 470					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 471							timeToWake, pendingPingIntent);
 472				}
 473			}
 474		} else {
 475			Intent intent = new Intent(context, EventReceiver.class);
 476			intent.setAction("ping_check");
 477			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 478					intent, 0);
 479			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 480					alarmIntent);
 481		}
 482
 483	}
 484
 485	public XmppConnection createConnection(Account account) {
 486		SharedPreferences sharedPref = getPreferences();
 487		account.setResource(sharedPref.getString("resource", "mobile")
 488				.toLowerCase(Locale.getDefault()));
 489		XmppConnection connection = new XmppConnection(account, this);
 490		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 491		connection.setOnStatusChangedListener(this.statusListener);
 492		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 493		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 494		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 495		connection.setOnBindListener(this.mOnBindListener);
 496		connection
 497				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 498		return connection;
 499	}
 500
 501	synchronized public void sendMessage(Message message) {
 502		Account account = message.getConversation().getAccount();
 503		Conversation conv = message.getConversation();
 504		MessagePacket packet = null;
 505		boolean saveInDb = true;
 506		boolean send = false;
 507		if (account.getStatus() == Account.STATUS_ONLINE) {
 508			if (message.getType() == Message.TYPE_IMAGE) {
 509				if (message.getPresence() != null) {
 510					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 511						if (!conv.hasValidOtrSession()
 512								&& (message.getPresence() != null)) {
 513							conv.startOtrSession(getApplicationContext(),
 514									message.getPresence(), true);
 515							message.setStatus(Message.STATUS_WAITING);
 516						} else if (conv.hasValidOtrSession()
 517								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 518							mJingleConnectionManager
 519									.createNewConnection(message);
 520						} else if (message.getPresence() == null) {
 521							message.setStatus(Message.STATUS_WAITING);
 522						}
 523					} else {
 524						mJingleConnectionManager.createNewConnection(message);
 525					}
 526				} else {
 527					message.setStatus(Message.STATUS_WAITING);
 528				}
 529			} else {
 530				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 531					if (!conv.hasValidOtrSession()
 532							&& (message.getPresence() != null)) {
 533						conv.startOtrSession(getApplicationContext(),
 534								message.getPresence(), true);
 535						message.setStatus(Message.STATUS_WAITING);
 536					} else if (conv.hasValidOtrSession()
 537							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 538						message.setPresence(conv.getOtrSession().getSessionID()
 539								.getUserID());
 540						packet = mMessageGenerator.generateOtrChat(message);
 541						send = true;
 542
 543					} else if (message.getPresence() == null) {
 544						message.setStatus(Message.STATUS_WAITING);
 545					}
 546				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 547					message.getConversation().endOtrIfNeeded();
 548					failWaitingOtrMessages(message.getConversation());
 549					packet = mMessageGenerator.generatePgpChat(message);
 550					send = true;
 551				} else {
 552					message.getConversation().endOtrIfNeeded();
 553					failWaitingOtrMessages(message.getConversation());
 554					packet = mMessageGenerator.generateChat(message);
 555					send = true;
 556				}
 557			}
 558		} else {
 559			message.setStatus(Message.STATUS_WAITING);
 560			if (message.getType() == Message.TYPE_TEXT) {
 561				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 562					String pgpBody = message.getEncryptedBody();
 563					String decryptedBody = message.getBody();
 564					message.setBody(pgpBody);
 565					databaseBackend.createMessage(message);
 566					saveInDb = false;
 567					message.setBody(decryptedBody);
 568				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 569					if (conv.hasValidOtrSession()) {
 570						message.setPresence(conv.getOtrSession().getSessionID()
 571								.getUserID());
 572					} else if (!conv.hasValidOtrSession()
 573							&& message.getPresence() != null) {
 574						conv.startOtrSession(getApplicationContext(),
 575								message.getPresence(), false);
 576					}
 577				}
 578			}
 579
 580		}
 581		if (saveInDb) {
 582			databaseBackend.createMessage(message);
 583		}
 584		conv.getMessages().add(message);
 585		if ((send) && (packet != null)) {
 586			if (!account.getXmppConnection().getFeatures().sm()
 587					&& conv.getMode() != Conversation.MODE_MULTI) {
 588				message.setStatus(Message.STATUS_SEND);
 589			}
 590			sendMessagePacket(account, packet);
 591		}
 592		updateConversationUi();
 593	}
 594
 595	private void sendUnsendMessages(Conversation conversation) {
 596		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 597			int status = conversation.getMessages().get(i).getStatus();
 598			if (status == Message.STATUS_WAITING) {
 599				resendMessage(conversation.getMessages().get(i));
 600			}
 601		}
 602	}
 603
 604	private void resendMessage(Message message) {
 605		Account account = message.getConversation().getAccount();
 606		MessagePacket packet = null;
 607		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 608			Presences presences = message.getConversation().getContact()
 609					.getPresences();
 610			if (!message.getConversation().hasValidOtrSession()) {
 611				if ((message.getPresence() != null)
 612						&& (presences.has(message.getPresence()))) {
 613					message.getConversation().startOtrSession(
 614							getApplicationContext(), message.getPresence(),
 615							true);
 616				} else {
 617					if (presences.size() == 1) {
 618						String presence = presences.asStringArray()[0];
 619						message.getConversation().startOtrSession(
 620								getApplicationContext(), presence, true);
 621					}
 622				}
 623			} else {
 624				if (message.getConversation().getOtrSession()
 625						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 626					if (message.getType() == Message.TYPE_TEXT) {
 627						packet = mMessageGenerator.generateOtrChat(message,
 628								true);
 629					} else if (message.getType() == Message.TYPE_IMAGE) {
 630						mJingleConnectionManager.createNewConnection(message);
 631					}
 632				}
 633			}
 634		} else if (message.getType() == Message.TYPE_TEXT) {
 635			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 636				packet = mMessageGenerator.generateChat(message, true);
 637			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 638					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 639				packet = mMessageGenerator.generatePgpChat(message, true);
 640			}
 641		} else if (message.getType() == Message.TYPE_IMAGE) {
 642			Presences presences = message.getConversation().getContact()
 643					.getPresences();
 644			if ((message.getPresence() != null)
 645					&& (presences.has(message.getPresence()))) {
 646				markMessage(message, Message.STATUS_OFFERED);
 647				mJingleConnectionManager.createNewConnection(message);
 648			} else {
 649				if (presences.size() == 1) {
 650					String presence = presences.asStringArray()[0];
 651					message.setPresence(presence);
 652					markMessage(message, Message.STATUS_OFFERED);
 653					mJingleConnectionManager.createNewConnection(message);
 654				}
 655			}
 656		}
 657		if (packet != null) {
 658			sendMessagePacket(account, packet);
 659			markMessage(message, Message.STATUS_SEND);
 660		}
 661	}
 662
 663	public void fetchRosterFromServer(Account account) {
 664		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 665		if (!"".equals(account.getRosterVersion())) {
 666			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 667					+ account.getRosterVersion());
 668		} else {
 669			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 670		}
 671		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 672				account.getRosterVersion());
 673		account.getXmppConnection().sendIqPacket(iqPacket,
 674				new OnIqPacketReceived() {
 675
 676					@Override
 677					public void onIqPacketReceived(final Account account,
 678							IqPacket packet) {
 679						Element query = packet.findChild("query");
 680						if (query != null) {
 681							account.getRoster().markAllAsNotInRoster();
 682							mIqParser.rosterItems(account, query);
 683						}
 684					}
 685				});
 686	}
 687
 688	public void fetchBookmarks(Account account) {
 689		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 690		Element query = iqPacket.query("jabber:iq:private");
 691		query.addChild("storage", "storage:bookmarks");
 692		OnIqPacketReceived callback = new OnIqPacketReceived() {
 693
 694			@Override
 695			public void onIqPacketReceived(Account account, IqPacket packet) {
 696				Element query = packet.query();
 697				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 698				Element storage = query.findChild("storage",
 699						"storage:bookmarks");
 700				if (storage != null) {
 701					for (Element item : storage.getChildren()) {
 702						if (item.getName().equals("conference")) {
 703							Bookmark bookmark = Bookmark.parse(item, account);
 704							bookmarks.add(bookmark);
 705							Conversation conversation = find(bookmark);
 706							if (conversation != null) {
 707								conversation.setBookmark(bookmark);
 708							} else {
 709								if (bookmark.autojoin()) {
 710									conversation = findOrCreateConversation(
 711											account, bookmark.getJid(), true);
 712									conversation.setBookmark(bookmark);
 713									joinMuc(conversation);
 714								}
 715							}
 716						}
 717					}
 718				}
 719				account.setBookmarks(bookmarks);
 720			}
 721		};
 722		sendIqPacket(account, iqPacket, callback);
 723
 724	}
 725
 726	public void pushBookmarks(Account account) {
 727		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 728		Element query = iqPacket.query("jabber:iq:private");
 729		Element storage = query.addChild("storage", "storage:bookmarks");
 730		for (Bookmark bookmark : account.getBookmarks()) {
 731			storage.addChild(bookmark.toElement());
 732		}
 733		sendIqPacket(account, iqPacket, null);
 734	}
 735
 736	private void mergePhoneContactsWithRoster() {
 737		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 738				new OnPhoneContactsLoadedListener() {
 739					@Override
 740					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 741						for (Account account : accounts) {
 742							account.getRoster().clearSystemAccounts();
 743						}
 744						for (Bundle phoneContact : phoneContacts) {
 745							for (Account account : accounts) {
 746								String jid = phoneContact.getString("jid");
 747								Contact contact = account.getRoster()
 748										.getContact(jid);
 749								String systemAccount = phoneContact
 750										.getInt("phoneid")
 751										+ "#"
 752										+ phoneContact.getString("lookup");
 753								contact.setSystemAccount(systemAccount);
 754								contact.setPhotoUri(phoneContact
 755										.getString("photouri"));
 756								contact.setSystemName(phoneContact
 757										.getString("displayname"));
 758							}
 759						}
 760					}
 761				});
 762	}
 763
 764	public List<Conversation> getConversations() {
 765		if (this.conversations == null) {
 766			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 767			for (Account account : this.accounts) {
 768				accountLookupTable.put(account.getUuid(), account);
 769			}
 770			this.conversations = databaseBackend
 771					.getConversations(Conversation.STATUS_AVAILABLE);
 772			for (Conversation conv : this.conversations) {
 773				Account account = accountLookupTable.get(conv.getAccountUuid());
 774				conv.setAccount(account);
 775				conv.setMessages(databaseBackend.getMessages(conv, 50));
 776			}
 777		}
 778
 779		return this.conversations;
 780	}
 781
 782	public void populateWithOrderedConversations(List<Conversation> list) {
 783		list.clear();
 784		list.addAll(getConversations());
 785		Collections.sort(list, new Comparator<Conversation>() {
 786			@Override
 787			public int compare(Conversation lhs, Conversation rhs) {
 788				Message left = lhs.getLatestMessage();
 789				Message right = rhs.getLatestMessage();
 790				if (left.getTimeSent() > right.getTimeSent()) {
 791					return -1;
 792				} else if (left.getTimeSent() < right.getTimeSent()) {
 793					return 1;
 794				} else {
 795					return 0;
 796				}
 797			}
 798		});
 799	}
 800
 801	public List<Message> getMoreMessages(Conversation conversation,
 802			long timestamp) {
 803		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 804				timestamp);
 805		for (Message message : messages) {
 806			message.setConversation(conversation);
 807		}
 808		return messages;
 809	}
 810
 811	public List<Account> getAccounts() {
 812		return this.accounts;
 813	}
 814
 815	public Conversation find(List<Conversation> haystack, Contact contact) {
 816		for (Conversation conversation : haystack) {
 817			if (conversation.getContact() == contact) {
 818				return conversation;
 819			}
 820		}
 821		return null;
 822	}
 823
 824	public Conversation find(List<Conversation> haystack, Account account,
 825			String jid) {
 826		for (Conversation conversation : haystack) {
 827			if ((conversation.getAccount().equals(account))
 828					&& (conversation.getContactJid().split("/")[0].equals(jid))) {
 829				return conversation;
 830			}
 831		}
 832		return null;
 833	}
 834
 835	public Conversation findOrCreateConversation(Account account, String jid,
 836			boolean muc) {
 837		Conversation conversation = find(account, jid);
 838		if (conversation != null) {
 839			return conversation;
 840		}
 841		conversation = databaseBackend.findConversation(account, jid);
 842		if (conversation != null) {
 843			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 844			conversation.setAccount(account);
 845			if (muc) {
 846				conversation.setMode(Conversation.MODE_MULTI);
 847			} else {
 848				conversation.setMode(Conversation.MODE_SINGLE);
 849			}
 850			conversation.setMessages(databaseBackend.getMessages(conversation,
 851					50));
 852			this.databaseBackend.updateConversation(conversation);
 853		} else {
 854			String conversationName;
 855			Contact contact = account.getRoster().getContact(jid);
 856			if (contact != null) {
 857				conversationName = contact.getDisplayName();
 858			} else {
 859				conversationName = jid.split("@")[0];
 860			}
 861			if (muc) {
 862				conversation = new Conversation(conversationName, account, jid,
 863						Conversation.MODE_MULTI);
 864			} else {
 865				conversation = new Conversation(conversationName, account, jid,
 866						Conversation.MODE_SINGLE);
 867			}
 868			this.databaseBackend.createConversation(conversation);
 869		}
 870		this.conversations.add(conversation);
 871		updateConversationUi();
 872		return conversation;
 873	}
 874
 875	public void archiveConversation(Conversation conversation) {
 876		if (conversation.getMode() == Conversation.MODE_MULTI) {
 877			Bookmark bookmark = conversation.getBookmark();
 878			if (bookmark != null && bookmark.autojoin()) {
 879				bookmark.setAutojoin(false);
 880				pushBookmarks(bookmark.getAccount());
 881			}
 882			leaveMuc(conversation);
 883		} else {
 884			conversation.endOtrIfNeeded();
 885		}
 886		this.databaseBackend.updateConversation(conversation);
 887		this.conversations.remove(conversation);
 888		updateConversationUi();
 889	}
 890
 891	public void clearConversationHistory(Conversation conversation) {
 892		this.databaseBackend.deleteMessagesInConversation(conversation);
 893		this.fileBackend.removeFiles(conversation);
 894		conversation.getMessages().clear();
 895		updateConversationUi();
 896	}
 897
 898	public int getConversationCount() {
 899		return this.databaseBackend.getConversationCount();
 900	}
 901
 902	public void createAccount(Account account) {
 903		databaseBackend.createAccount(account);
 904		this.accounts.add(account);
 905		this.reconnectAccount(account, false);
 906		updateAccountUi();
 907	}
 908
 909	public void updateAccount(Account account) {
 910		this.statusListener.onStatusChanged(account);
 911		databaseBackend.updateAccount(account);
 912		reconnectAccount(account, false);
 913		updateAccountUi();
 914		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 915	}
 916
 917	public void deleteAccount(Account account) {
 918		for (Conversation conversation : conversations) {
 919			if (conversation.getAccount() == account) {
 920				if (conversation.getMode() == Conversation.MODE_MULTI) {
 921					leaveMuc(conversation);
 922				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
 923					conversation.endOtrIfNeeded();
 924				}
 925				conversations.remove(conversation);
 926			}
 927		}
 928		if (account.getXmppConnection() != null) {
 929			this.disconnect(account, true);
 930		}
 931		databaseBackend.deleteAccount(account);
 932		this.accounts.remove(account);
 933		updateAccountUi();
 934		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 935	}
 936
 937	public void setOnConversationListChangedListener(
 938			OnConversationUpdate listener) {
 939		this.mOnConversationUpdate = listener;
 940		this.convChangedListenerCount++;
 941	}
 942
 943	public void removeOnConversationListChangedListener() {
 944		this.convChangedListenerCount--;
 945		if (this.convChangedListenerCount == 0) {
 946			this.mOnConversationUpdate = null;
 947		}
 948	}
 949
 950	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
 951		this.mOnAccountUpdate = listener;
 952		this.accountChangedListenerCount++;
 953	}
 954
 955	public void removeOnAccountListChangedListener() {
 956		this.accountChangedListenerCount--;
 957		if (this.accountChangedListenerCount == 0) {
 958			this.mOnAccountUpdate = null;
 959		}
 960	}
 961
 962	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
 963		this.mOnRosterUpdate = listener;
 964	}
 965
 966	public void removeOnRosterUpdateListener() {
 967		this.mOnRosterUpdate = null;
 968	}
 969
 970	public void connectMultiModeConversations(Account account) {
 971		List<Conversation> conversations = getConversations();
 972		for (int i = 0; i < conversations.size(); i++) {
 973			Conversation conversation = conversations.get(i);
 974			if ((conversation.getMode() == Conversation.MODE_MULTI)
 975					&& (conversation.getAccount() == account)) {
 976				joinMuc(conversation);
 977			}
 978		}
 979	}
 980
 981	public void joinMuc(Conversation conversation) {
 982		Account account = conversation.getAccount();
 983		account.pendingConferenceJoins.remove(conversation);
 984		account.pendingConferenceLeaves.remove(conversation);
 985		if (account.getStatus() == Account.STATUS_ONLINE) {
 986			Log.d(LOGTAG,
 987					"joining conversation " + conversation.getContactJid());
 988			String nick = conversation.getMucOptions().getProposedNick();
 989			conversation.getMucOptions().setJoinNick(nick);
 990			PresencePacket packet = new PresencePacket();
 991			String joinJid = conversation.getMucOptions().getJoinJid();
 992			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
 993			Element x = new Element("x");
 994			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
 995			String sig = account.getPgpSignature();
 996			if (sig != null) {
 997				packet.addChild("status").setContent("online");
 998				packet.addChild("x", "jabber:x:signed").setContent(sig);
 999			}
1000			if (conversation.getMessages().size() != 0) {
1001				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1002						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1003				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1004				Date date = new Date(conversation.getLatestMessage()
1005						.getTimeSent() + 1000);
1006				x.addChild("history").setAttribute("since",
1007						mDateFormat.format(date));
1008			}
1009			packet.addChild(x);
1010			sendPresencePacket(account, packet);
1011			if (!joinJid.equals(conversation.getContactJid())) {
1012				conversation.setContactJid(joinJid);
1013				databaseBackend.updateConversation(conversation);
1014			}
1015		} else {
1016			account.pendingConferenceJoins.add(conversation);
1017		}
1018	}
1019
1020	private OnRenameListener renameListener = null;
1021	private IqGenerator mIqGenerator = new IqGenerator();
1022
1023	public void setOnRenameListener(OnRenameListener listener) {
1024		this.renameListener = listener;
1025	}
1026
1027	public void renameInMuc(final Conversation conversation, final String nick) {
1028		final MucOptions options = conversation.getMucOptions();
1029		options.setJoinNick(nick);
1030		if (options.online()) {
1031			Account account = conversation.getAccount();
1032			options.setOnRenameListener(new OnRenameListener() {
1033
1034				@Override
1035				public void onRename(boolean success) {
1036					if (renameListener != null) {
1037						renameListener.onRename(success);
1038					}
1039					if (success) {
1040						conversation.setContactJid(conversation.getMucOptions()
1041								.getJoinJid());
1042						databaseBackend.updateConversation(conversation);
1043						Bookmark bookmark = conversation.getBookmark();
1044						if (bookmark != null) {
1045							bookmark.setNick(nick);
1046							pushBookmarks(bookmark.getAccount());
1047						}
1048					}
1049				}
1050			});
1051			options.flagAboutToRename();
1052			PresencePacket packet = new PresencePacket();
1053			packet.setAttribute("to", options.getJoinJid());
1054			packet.setAttribute("from", conversation.getAccount().getFullJid());
1055
1056			String sig = account.getPgpSignature();
1057			if (sig != null) {
1058				packet.addChild("status").setContent("online");
1059				packet.addChild("x", "jabber:x:signed").setContent(sig);
1060			}
1061			sendPresencePacket(account, packet);
1062		} else {
1063			conversation.setContactJid(options.getJoinJid());
1064			databaseBackend.updateConversation(conversation);
1065			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1066				Bookmark bookmark = conversation.getBookmark();
1067				if (bookmark != null) {
1068					bookmark.setNick(nick);
1069					pushBookmarks(bookmark.getAccount());
1070				}
1071				joinMuc(conversation);
1072			}
1073		}
1074	}
1075
1076	public void leaveMuc(Conversation conversation) {
1077		Account account = conversation.getAccount();
1078		account.pendingConferenceJoins.remove(conversation);
1079		account.pendingConferenceLeaves.remove(conversation);
1080		if (account.getStatus() == Account.STATUS_ONLINE) {
1081			PresencePacket packet = new PresencePacket();
1082			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1083			packet.setAttribute("from", conversation.getAccount().getFullJid());
1084			packet.setAttribute("type", "unavailable");
1085			sendPresencePacket(conversation.getAccount(), packet);
1086			conversation.getMucOptions().setOffline();
1087			conversation.deregisterWithBookmark();
1088			Log.d(LOGTAG, conversation.getAccount().getJid() + " leaving muc "
1089					+ conversation.getContactJid());
1090		} else {
1091			account.pendingConferenceLeaves.add(conversation);
1092		}
1093	}
1094
1095	public void disconnect(Account account, boolean force) {
1096		if ((account.getStatus() == Account.STATUS_ONLINE)
1097				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1098			if (!force) {
1099				List<Conversation> conversations = getConversations();
1100				for (int i = 0; i < conversations.size(); i++) {
1101					Conversation conversation = conversations.get(i);
1102					if (conversation.getAccount() == account) {
1103						if (conversation.getMode() == Conversation.MODE_MULTI) {
1104							leaveMuc(conversation);
1105						} else {
1106							conversation.endOtrIfNeeded();
1107						}
1108					}
1109				}
1110			}
1111			account.getXmppConnection().disconnect(force);
1112		}
1113	}
1114
1115	@Override
1116	public IBinder onBind(Intent intent) {
1117		return mBinder;
1118	}
1119
1120	public void updateMessage(Message message) {
1121		databaseBackend.updateMessage(message);
1122	}
1123
1124	protected void syncDirtyContacts(Account account) {
1125		for (Contact contact : account.getRoster().getContacts()) {
1126			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1127				pushContactToServer(contact);
1128			}
1129			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1130				Log.d(LOGTAG, "dirty delete");
1131				deleteContactOnServer(contact);
1132			}
1133		}
1134	}
1135
1136	public void createContact(Contact contact) {
1137		SharedPreferences sharedPref = getPreferences();
1138		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1139		if (autoGrant) {
1140			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1141			contact.setOption(Contact.Options.ASKING);
1142		}
1143		pushContactToServer(contact);
1144	}
1145
1146	public void onOtrSessionEstablished(Conversation conversation) {
1147		Account account = conversation.getAccount();
1148		List<Message> messages = conversation.getMessages();
1149		Session otrSession = conversation.getOtrSession();
1150		Log.d(LOGTAG, account.getJid() + " otr session established with "
1151				+ conversation.getContactJid() + "/"
1152				+ otrSession.getSessionID().getUserID());
1153		for (int i = 0; i < messages.size(); ++i) {
1154			Message msg = messages.get(i);
1155			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1156					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1157				msg.setPresence(otrSession.getSessionID().getUserID());
1158				if (msg.getType() == Message.TYPE_TEXT) {
1159					MessagePacket outPacket = mMessageGenerator
1160							.generateOtrChat(msg, true);
1161					if (outPacket != null) {
1162						msg.setStatus(Message.STATUS_SEND);
1163						databaseBackend.updateMessage(msg);
1164						sendMessagePacket(account, outPacket);
1165					}
1166				} else if (msg.getType() == Message.TYPE_IMAGE) {
1167					mJingleConnectionManager.createNewConnection(msg);
1168				}
1169			}
1170		}
1171		notifyUi(conversation, false);
1172	}
1173
1174	public boolean renewSymmetricKey(Conversation conversation) {
1175		Account account = conversation.getAccount();
1176		byte[] symmetricKey = new byte[32];
1177		this.mRandom.nextBytes(symmetricKey);
1178		Session otrSession = conversation.getOtrSession();
1179		if (otrSession != null) {
1180			MessagePacket packet = new MessagePacket();
1181			packet.setType(MessagePacket.TYPE_CHAT);
1182			packet.setFrom(account.getFullJid());
1183			packet.addChild("private", "urn:xmpp:carbons:2");
1184			packet.addChild("no-copy", "urn:xmpp:hints");
1185			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1186					+ otrSession.getSessionID().getUserID());
1187			try {
1188				packet.setBody(otrSession
1189						.transformSending(CryptoHelper.FILETRANSFER
1190								+ CryptoHelper.bytesToHex(symmetricKey)));
1191				sendMessagePacket(account, packet);
1192				conversation.setSymmetricKey(symmetricKey);
1193				return true;
1194			} catch (OtrException e) {
1195				return false;
1196			}
1197		}
1198		return false;
1199	}
1200
1201	public void pushContactToServer(Contact contact) {
1202		contact.resetOption(Contact.Options.DIRTY_DELETE);
1203		contact.setOption(Contact.Options.DIRTY_PUSH);
1204		Account account = contact.getAccount();
1205		if (account.getStatus() == Account.STATUS_ONLINE) {
1206			boolean ask = contact.getOption(Contact.Options.ASKING);
1207			boolean sendUpdates = contact
1208					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1209					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1210			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1211			iq.query("jabber:iq:roster").addChild(contact.asElement());
1212			account.getXmppConnection().sendIqPacket(iq, null);
1213			if (sendUpdates) {
1214				sendPresencePacket(account,
1215						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1216			}
1217			if (ask) {
1218				sendPresencePacket(account,
1219						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1220			}
1221		}
1222	}
1223
1224	public void publishAvatar(Account account, Uri image,
1225			final UiCallback<Avatar> callback) {
1226		final Bitmap.CompressFormat format = Defaults.AVATAR_FORMAT;
1227		final int size = Defaults.AVATAR_SIZE;
1228		final Avatar avatar = getFileBackend()
1229				.getPepAvatar(image, size, format);
1230		if (avatar != null) {
1231			avatar.height = size;
1232			avatar.width = size;
1233			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1234				avatar.type = "image/webp";
1235			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1236				avatar.type = "image/jpeg";
1237			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1238				avatar.type = "image/png";
1239			}
1240			if (!getFileBackend().save(avatar)) {
1241				callback.error(R.string.error_saving_avatar, avatar);
1242				return;
1243			}
1244			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1245			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1246
1247				@Override
1248				public void onIqPacketReceived(Account account, IqPacket result) {
1249					if (result.getType() == IqPacket.TYPE_RESULT) {
1250						IqPacket packet = XmppConnectionService.this.mIqGenerator
1251								.publishAvatarMetadata(avatar);
1252						sendIqPacket(account, packet, new OnIqPacketReceived() {
1253
1254							@Override
1255							public void onIqPacketReceived(Account account,
1256									IqPacket result) {
1257								if (result.getType() == IqPacket.TYPE_RESULT) {
1258									if (account.setAvatar(avatar.getFilename())) {
1259										databaseBackend.updateAccount(account);
1260									}
1261									callback.success(avatar);
1262								} else {
1263									callback.error(
1264											R.string.error_publish_avatar_server_reject,
1265											avatar);
1266								}
1267							}
1268						});
1269					} else {
1270						callback.error(
1271								R.string.error_publish_avatar_server_reject,
1272								avatar);
1273					}
1274				}
1275			});
1276		} else {
1277			callback.error(R.string.error_publish_avatar_converting, null);
1278		}
1279	}
1280
1281	public void fetchAvatar(Account account, Avatar avatar) {
1282		fetchAvatar(account, avatar, null);
1283	}
1284
1285	public void fetchAvatar(Account account, final Avatar avatar,
1286			final UiCallback<Avatar> callback) {
1287		Log.d(LOGTAG, account.getJid() + ": retrieving avatar for "
1288				+ avatar.owner);
1289		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1290		sendIqPacket(account, packet, new OnIqPacketReceived() {
1291
1292			@Override
1293			public void onIqPacketReceived(Account account, IqPacket result) {
1294				avatar.image = mIqParser.avatarData(result);
1295				if (avatar.image != null) {
1296					if (getFileBackend().save(avatar)) {
1297						if (account.getJid().equals(avatar.owner)) {
1298							if (account.setAvatar(avatar.getFilename())) {
1299								databaseBackend.updateAccount(account);
1300							}
1301						} else {
1302							Contact contact = account.getRoster().getContact(
1303									avatar.owner);
1304							contact.setAvatar(avatar.getFilename());
1305						}
1306						if (callback != null) {
1307							callback.success(avatar);
1308						}
1309						return;
1310					}
1311				}
1312				if (callback != null) {
1313					callback.error(0, null);
1314				}
1315			}
1316		});
1317	}
1318
1319	public void checkForAvatar(Account account,
1320			final UiCallback<Avatar> callback) {
1321		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1322		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1323
1324			@Override
1325			public void onIqPacketReceived(Account account, IqPacket packet) {
1326				if (packet.getType() == IqPacket.TYPE_RESULT) {
1327					Element pubsub = packet.findChild("pubsub",
1328							"http://jabber.org/protocol/pubsub");
1329					if (pubsub != null) {
1330						Element items = pubsub.findChild("items");
1331						if (items != null) {
1332							Avatar avatar = Avatar.parseMetadata(items);
1333							if (avatar != null) {
1334								avatar.owner = account.getJid();
1335								if (fileBackend.isAvatarCached(avatar)) {
1336									if (account.setAvatar(avatar.getFilename())) {
1337										databaseBackend.updateAccount(account);
1338									}
1339									callback.success(avatar);
1340								} else {
1341									fetchAvatar(account, avatar, callback);
1342								}
1343								return;
1344							}
1345						}
1346					}
1347				}
1348				callback.error(0, null);
1349			}
1350		});
1351	}
1352
1353	public void deleteContactOnServer(Contact contact) {
1354		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1355		contact.resetOption(Contact.Options.DIRTY_PUSH);
1356		contact.setOption(Contact.Options.DIRTY_DELETE);
1357		Account account = contact.getAccount();
1358		if (account.getStatus() == Account.STATUS_ONLINE) {
1359			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1360			Element item = iq.query("jabber:iq:roster").addChild("item");
1361			item.setAttribute("jid", contact.getJid());
1362			item.setAttribute("subscription", "remove");
1363			account.getXmppConnection().sendIqPacket(iq, null);
1364		}
1365	}
1366
1367	public void updateConversation(Conversation conversation) {
1368		this.databaseBackend.updateConversation(conversation);
1369	}
1370
1371	public void reconnectAccount(final Account account, final boolean force) {
1372		new Thread(new Runnable() {
1373
1374			@Override
1375			public void run() {
1376				if (account.getXmppConnection() != null) {
1377					disconnect(account, force);
1378				}
1379				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1380					if (account.getXmppConnection() == null) {
1381						account.setXmppConnection(createConnection(account));
1382					}
1383					Thread thread = new Thread(account.getXmppConnection());
1384					thread.start();
1385					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1386				}
1387			}
1388		}).start();
1389	}
1390
1391	public void invite(Conversation conversation, String contact) {
1392		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1393		sendMessagePacket(conversation.getAccount(), packet);
1394	}
1395	
1396	public void resetSendingToWaiting(Account account) {
1397		for(Conversation conversation : getConversations()) {
1398			if (conversation.getAccount() == account) {
1399				for(Message message : conversation.getMessages()) {
1400					if (message.getStatus() == Message.STATUS_UNSEND) {
1401						markMessage(message, Message.STATUS_WAITING);
1402					}
1403				}
1404			}
1405		}
1406	}
1407
1408	public boolean markMessage(Account account, String recipient, String uuid,
1409			int status) {
1410		for (Conversation conversation : getConversations()) {
1411			if (conversation.getContactJid().equals(recipient)
1412					&& conversation.getAccount().equals(account)) {
1413				return markMessage(conversation, uuid, status);
1414			}
1415		}
1416		return false;
1417	}
1418
1419	public boolean markMessage(Conversation conversation, String uuid,
1420			int status) {
1421		for (Message message : conversation.getMessages()) {
1422			if (message.getUuid().equals(uuid)) {
1423				markMessage(message, status);
1424				return true;
1425			}
1426		}
1427		return false;
1428	}
1429
1430	public void markMessage(Message message, int status) {
1431		message.setStatus(status);
1432		databaseBackend.updateMessage(message);
1433		updateConversationUi();
1434	}
1435
1436	public SharedPreferences getPreferences() {
1437		return PreferenceManager
1438				.getDefaultSharedPreferences(getApplicationContext());
1439	}
1440
1441	public boolean confirmMessages() {
1442		return getPreferences().getBoolean("confirm_messages", true);
1443	}
1444
1445	public void notifyUi(Conversation conversation, boolean notify) {
1446		if (mOnConversationUpdate != null) {
1447			mOnConversationUpdate.onConversationUpdate();
1448		} else {
1449			UIHelper.updateNotification(getApplicationContext(),
1450					getConversations(), conversation, notify);
1451		}
1452	}
1453
1454	public void updateConversationUi() {
1455		if (mOnConversationUpdate != null) {
1456			mOnConversationUpdate.onConversationUpdate();
1457		}
1458	}
1459
1460	public void updateAccountUi() {
1461		if (mOnAccountUpdate != null) {
1462			mOnAccountUpdate.onAccountUpdate();
1463		}
1464	}
1465
1466	public void updateRosterUi() {
1467		if (mOnRosterUpdate != null) {
1468			mOnRosterUpdate.onRosterUpdate();
1469		}
1470	}
1471
1472	public Account findAccountByJid(String accountJid) {
1473		for (Account account : this.accounts) {
1474			if (account.getJid().equals(accountJid)) {
1475				return account;
1476			}
1477		}
1478		return null;
1479	}
1480
1481	public Conversation findConversationByUuid(String uuid) {
1482		for (Conversation conversation : getConversations()) {
1483			if (conversation.getUuid().equals(uuid)) {
1484				return conversation;
1485			}
1486		}
1487		return null;
1488	}
1489
1490	public void markRead(Conversation conversation) {
1491		conversation.markRead();
1492		String id = conversation.popLatestMarkableMessageId();
1493		if (confirmMessages() && id != null) {
1494			Account account = conversation.getAccount();
1495			String to = conversation.getContactJid();
1496			this.sendMessagePacket(conversation.getAccount(),
1497					mMessageGenerator.confirm(account, to, id));
1498		}
1499	}
1500
1501	public void failWaitingOtrMessages(Conversation conversation) {
1502		for (Message message : conversation.getMessages()) {
1503			if (message.getEncryption() == Message.ENCRYPTION_OTR
1504					&& message.getStatus() == Message.STATUS_WAITING) {
1505				markMessage(message, Message.STATUS_SEND_FAILED);
1506			}
1507		}
1508	}
1509
1510	public SecureRandom getRNG() {
1511		return this.mRandom;
1512	}
1513
1514	public MemorizingTrustManager getMemorizingTrustManager() {
1515		return this.mMemorizingTrustManager;
1516	}
1517
1518	public PowerManager getPowerManager() {
1519		return this.pm;
1520	}
1521
1522	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1523		if (account.getStatus() == Account.STATUS_ONLINE) {
1524			MessagePacket error = this.mMessageGenerator
1525					.generateNotAcceptable(packet);
1526			sendMessagePacket(account, error);
1527		}
1528	}
1529
1530	public void syncRosterToDisk(final Account account) {
1531		new Thread(new Runnable() {
1532
1533			@Override
1534			public void run() {
1535				databaseBackend.writeRoster(account.getRoster());
1536			}
1537		}).start();
1538
1539	}
1540
1541	public List<String> getKnownHosts() {
1542		List<String> hosts = new ArrayList<String>();
1543		for (Account account : getAccounts()) {
1544			if (!hosts.contains(account.getServer())) {
1545				hosts.add(account.getServer());
1546			}
1547			for (Contact contact : account.getRoster().getContacts()) {
1548				if (contact.showInRoster()) {
1549					String server = contact.getServer();
1550					if (server != null && !hosts.contains(server)) {
1551						hosts.add(server);
1552					}
1553				}
1554			}
1555		}
1556		return hosts;
1557	}
1558
1559	public List<String> getKnownConferenceHosts() {
1560		ArrayList<String> mucServers = new ArrayList<String>();
1561		for (Account account : accounts) {
1562			if (account.getXmppConnection() != null) {
1563				String server = account.getXmppConnection().getMucServer();
1564				if (server != null && !mucServers.contains(server)) {
1565					mucServers.add(server);
1566				}
1567			}
1568		}
1569		return mucServers;
1570	}
1571
1572	public void sendMessagePacket(Account account, MessagePacket packet) {
1573		account.getXmppConnection().sendMessagePacket(packet);
1574	}
1575
1576	public void sendPresencePacket(Account account, PresencePacket packet) {
1577		account.getXmppConnection().sendPresencePacket(packet);
1578	}
1579
1580	public void sendIqPacket(Account account, IqPacket packet,
1581			OnIqPacketReceived callback) {
1582		account.getXmppConnection().sendIqPacket(packet, callback);
1583	}
1584
1585	public MessageGenerator getMessageGenerator() {
1586		return this.mMessageGenerator;
1587	}
1588
1589	public PresenceGenerator getPresenceGenerator() {
1590		return this.mPresenceGenerator;
1591	}
1592
1593	public IqGenerator getIqGenerator() {
1594		return this.mIqGenerator;
1595	}
1596
1597	public JingleConnectionManager getJingleConnectionManager() {
1598		return this.mJingleConnectionManager;
1599	}
1600
1601	public interface OnConversationUpdate {
1602		public void onConversationUpdate();
1603	}
1604
1605	public interface OnAccountUpdate {
1606		public void onAccountUpdate();
1607	}
1608
1609	public interface OnRosterUpdate {
1610		public void onRosterUpdate();
1611	}
1612}