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