XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.security.SecureRandom;
   4import java.text.SimpleDateFormat;
   5import java.util.ArrayList;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.TimeZone;
  13import java.util.concurrent.CopyOnWriteArrayList;
  14
  15import org.openintents.openpgp.util.OpenPgpApi;
  16import org.openintents.openpgp.util.OpenPgpServiceConnection;
  17
  18import de.duenndns.ssl.MemorizingTrustManager;
  19
  20import net.java.otr4j.OtrException;
  21import net.java.otr4j.session.Session;
  22import net.java.otr4j.session.SessionStatus;
  23import eu.siacs.conversations.Config;
  24import eu.siacs.conversations.R;
  25import eu.siacs.conversations.crypto.PgpEngine;
  26import eu.siacs.conversations.entities.Account;
  27import eu.siacs.conversations.entities.Bookmark;
  28import eu.siacs.conversations.entities.Contact;
  29import eu.siacs.conversations.entities.Conversation;
  30import eu.siacs.conversations.entities.Message;
  31import eu.siacs.conversations.entities.MucOptions;
  32import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  33import eu.siacs.conversations.entities.Presences;
  34import eu.siacs.conversations.generator.IqGenerator;
  35import eu.siacs.conversations.generator.MessageGenerator;
  36import eu.siacs.conversations.generator.PresenceGenerator;
  37import eu.siacs.conversations.http.HttpConnectionManager;
  38import eu.siacs.conversations.parser.IqParser;
  39import eu.siacs.conversations.parser.MessageParser;
  40import eu.siacs.conversations.parser.PresenceParser;
  41import eu.siacs.conversations.persistance.DatabaseBackend;
  42import eu.siacs.conversations.persistance.FileBackend;
  43import eu.siacs.conversations.ui.UiCallback;
  44import eu.siacs.conversations.utils.CryptoHelper;
  45import eu.siacs.conversations.utils.ExceptionHelper;
  46import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  47import eu.siacs.conversations.utils.PRNGFixes;
  48import eu.siacs.conversations.utils.PhoneHelper;
  49import eu.siacs.conversations.utils.UIHelper;
  50import eu.siacs.conversations.xml.Element;
  51import eu.siacs.conversations.xmpp.OnBindListener;
  52import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  53import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  54import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  55import eu.siacs.conversations.xmpp.OnStatusChanged;
  56import eu.siacs.conversations.xmpp.XmppConnection;
  57import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  58import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  59import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  60import eu.siacs.conversations.xmpp.pep.Avatar;
  61import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  62import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  63import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  64import android.annotation.SuppressLint;
  65import android.app.AlarmManager;
  66import android.app.PendingIntent;
  67import android.app.Service;
  68import android.content.Context;
  69import android.content.Intent;
  70import android.content.SharedPreferences;
  71import android.database.ContentObserver;
  72import android.graphics.Bitmap;
  73import android.net.ConnectivityManager;
  74import android.net.NetworkInfo;
  75import android.net.Uri;
  76import android.os.Binder;
  77import android.os.Bundle;
  78import android.os.IBinder;
  79import android.os.PowerManager;
  80import android.os.PowerManager.WakeLock;
  81import android.os.SystemClock;
  82import android.preference.PreferenceManager;
  83import android.provider.ContactsContract;
  84import android.util.Log;
  85
  86public class XmppConnectionService extends Service {
  87
  88	public DatabaseBackend databaseBackend;
  89	private FileBackend fileBackend;
  90
  91	public long startDate;
  92
  93	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  94	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
  95
  96	private MemorizingTrustManager mMemorizingTrustManager;
  97
  98	private NotificationService mNotificationService;
  99
 100	private MessageParser mMessageParser = new MessageParser(this);
 101	private PresenceParser mPresenceParser = new PresenceParser(this);
 102	private IqParser mIqParser = new IqParser(this);
 103	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 104	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 105
 106	private List<Account> accounts;
 107	private CopyOnWriteArrayList<Conversation> conversations = null;
 108	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 109			this);
 110	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(this);
 111
 112	private OnConversationUpdate mOnConversationUpdate = null;
 113	private int convChangedListenerCount = 0;
 114	private OnAccountUpdate mOnAccountUpdate = null;
 115	private int accountChangedListenerCount = 0;
 116	private OnRosterUpdate mOnRosterUpdate = null;
 117	private int rosterChangedListenerCount = 0;
 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			XmppConnection connection = account.getXmppConnection();
 151			if (mOnAccountUpdate != null) {
 152				mOnAccountUpdate.onAccountUpdate();
 153				;
 154			}
 155			if (account.getStatus() == Account.STATUS_ONLINE) {
 156				for (Conversation conversation : account.pendingConferenceLeaves) {
 157					leaveMuc(conversation);
 158				}
 159				for (Conversation conversation : account.pendingConferenceJoins) {
 160					joinMuc(conversation);
 161				}
 162				mJingleConnectionManager.cancelInTransmission();
 163				List<Conversation> conversations = getConversations();
 164				for (int i = 0; i < conversations.size(); ++i) {
 165					if (conversations.get(i).getAccount() == account) {
 166						conversations.get(i).startOtrIfNeeded();
 167						sendUnsendMessages(conversations.get(i));
 168					}
 169				}
 170				if (connection != null && connection.getFeatures().csi()) {
 171					if (checkListeners()) {
 172						Log.d(Config.LOGTAG, account.getJid()
 173								+ " sending csi//inactive");
 174						connection.sendInactive();
 175					} else {
 176						Log.d(Config.LOGTAG, account.getJid()
 177								+ " sending csi//active");
 178						connection.sendActive();
 179					}
 180				}
 181				syncDirtyContacts(account);
 182				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 183			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 184				resetSendingToWaiting(account);
 185				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 186					int timeToReconnect = mRandom.nextInt(50) + 10;
 187					scheduleWakeupCall(timeToReconnect, false);
 188				}
 189			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 190				databaseBackend.updateAccount(account);
 191				reconnectAccount(account, true);
 192			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 193					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 194				if (connection != null) {
 195					int next = connection.getTimeToNextAttempt();
 196					Log.d(Config.LOGTAG, account.getJid()
 197							+ ": error connecting account. try again in "
 198							+ next + "s for the "
 199							+ (connection.getAttempt() + 1) + " time");
 200					scheduleWakeupCall((int) (next * 1.2), false);
 201				}
 202			}
 203			UIHelper.showErrorNotification(getApplicationContext(),
 204					getAccounts());
 205		}
 206	};
 207
 208	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 209
 210		@Override
 211		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 212			mJingleConnectionManager.deliverPacket(account, packet);
 213		}
 214	};
 215
 216	private OpenPgpServiceConnection pgpServiceConnection;
 217	private PgpEngine mPgpEngine = null;
 218	private Intent pingIntent;
 219	private PendingIntent pendingPingIntent = null;
 220	private WakeLock wakeLock;
 221	private PowerManager pm;
 222	private OnBindListener mOnBindListener = new OnBindListener() {
 223
 224		@Override
 225		public void onBind(final Account account) {
 226			account.getRoster().clearPresences();
 227			account.clearPresences(); // self presences
 228			account.pendingConferenceJoins.clear();
 229			account.pendingConferenceLeaves.clear();
 230			fetchRosterFromServer(account);
 231			fetchBookmarks(account);
 232			sendPresencePacket(account,
 233					mPresenceGenerator.sendPresence(account));
 234			connectMultiModeConversations(account);
 235			updateConversationUi();
 236		}
 237	};
 238
 239	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 240
 241		@Override
 242		public void onMessageAcknowledged(Account account, String uuid) {
 243			for (Conversation conversation : getConversations()) {
 244				if (conversation.getAccount() == account) {
 245					for (Message message : conversation.getMessages()) {
 246						if ((message.getStatus() == Message.STATUS_UNSEND || message
 247								.getStatus() == Message.STATUS_WAITING)
 248								&& message.getUuid().equals(uuid)) {
 249							markMessage(message, Message.STATUS_SEND);
 250							return;
 251						}
 252					}
 253				}
 254			}
 255		}
 256	};
 257
 258	public PgpEngine getPgpEngine() {
 259		if (pgpServiceConnection.isBound()) {
 260			if (this.mPgpEngine == null) {
 261				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 262						getApplicationContext(),
 263						pgpServiceConnection.getService()), this);
 264			}
 265			return mPgpEngine;
 266		} else {
 267			return null;
 268		}
 269
 270	}
 271
 272	public FileBackend getFileBackend() {
 273		return this.fileBackend;
 274	}
 275
 276	public Message attachImageToConversation(final Conversation conversation,
 277			final Uri uri, final UiCallback<Message> callback) {
 278		final Message message;
 279		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 280			message = new Message(conversation, "",
 281					Message.ENCRYPTION_DECRYPTED);
 282		} else {
 283			message = new Message(conversation, "",
 284					conversation.getNextEncryption(forceEncryption()));
 285		}
 286		message.setPresence(conversation.getNextPresence());
 287		message.setType(Message.TYPE_IMAGE);
 288		message.setStatus(Message.STATUS_OFFERED);
 289		new Thread(new Runnable() {
 290
 291			@Override
 292			public void run() {
 293				try {
 294					getFileBackend().copyImageToPrivateStorage(message, uri);
 295					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 296						getPgpEngine().encrypt(message, callback);
 297					} else {
 298						callback.success(message);
 299					}
 300				} catch (FileBackend.ImageCopyException e) {
 301					callback.error(e.getResId(), message);
 302				}
 303			}
 304		}).start();
 305		return message;
 306	}
 307
 308	public Conversation find(Bookmark bookmark) {
 309		return find(bookmark.getAccount(), bookmark.getJid());
 310	}
 311
 312	public Conversation find(Account account, String jid) {
 313		return find(getConversations(), account, jid);
 314	}
 315
 316	public class XmppConnectionBinder extends Binder {
 317		public XmppConnectionService getService() {
 318			return XmppConnectionService.this;
 319		}
 320	}
 321
 322	@Override
 323	public int onStartCommand(Intent intent, int flags, int startId) {
 324		if (intent != null && intent.getAction() != null) {
 325			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 326				mergePhoneContactsWithRoster();
 327				return START_STICKY;
 328			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 329				logoutAndSave();
 330				return START_NOT_STICKY;
 331			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 332				mNotificationService.clear();
 333			}
 334		}
 335		this.wakeLock.acquire();
 336		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 337				.getSystemService(Context.CONNECTIVITY_SERVICE);
 338		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 339		boolean isConnected = activeNetwork != null
 340				&& activeNetwork.isConnected();
 341
 342		for (Account account : accounts) {
 343			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 344				if (!isConnected) {
 345					account.setStatus(Account.STATUS_NO_INTERNET);
 346					if (statusListener != null) {
 347						statusListener.onStatusChanged(account);
 348					}
 349				} else {
 350					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 351						account.setStatus(Account.STATUS_OFFLINE);
 352						if (statusListener != null) {
 353							statusListener.onStatusChanged(account);
 354						}
 355					}
 356					if (account.getStatus() == Account.STATUS_ONLINE) {
 357						long lastReceived = account.getXmppConnection()
 358								.getLastPacketReceived();
 359						long lastSent = account.getXmppConnection()
 360								.getLastPingSent();
 361						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 362							Log.d(Config.LOGTAG, account.getJid()
 363									+ ": ping timeout");
 364							this.reconnectAccount(account, true);
 365						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 366							account.getXmppConnection().sendPing();
 367							this.scheduleWakeupCall(2, false);
 368						}
 369					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 370						if (account.getXmppConnection() == null) {
 371							account.setXmppConnection(this
 372									.createConnection(account));
 373						}
 374						new Thread(account.getXmppConnection()).start();
 375					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 376							&& ((SystemClock.elapsedRealtime() - account
 377									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 378						Log.d(Config.LOGTAG, account.getJid()
 379								+ ": time out during connect reconnecting");
 380						reconnectAccount(account, true);
 381					} else {
 382						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 383							reconnectAccount(account, true);
 384						}
 385					}
 386					// in any case. reschedule wakup call
 387					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 388				}
 389				if (mOnAccountUpdate != null) {
 390					mOnAccountUpdate.onAccountUpdate();
 391				}
 392			}
 393		}
 394		if (wakeLock.isHeld()) {
 395			try {
 396				wakeLock.release();
 397			} catch (RuntimeException re) {
 398			}
 399		}
 400		return START_STICKY;
 401	}
 402
 403	@SuppressLint("TrulyRandom")
 404	@Override
 405	public void onCreate() {
 406		ExceptionHelper.init(getApplicationContext());
 407		PRNGFixes.apply();
 408		this.mRandom = new SecureRandom();
 409		this.mMemorizingTrustManager = new MemorizingTrustManager(
 410				getApplicationContext());
 411		this.mNotificationService = new NotificationService(this);
 412		this.databaseBackend = DatabaseBackend
 413				.getInstance(getApplicationContext());
 414		this.fileBackend = new FileBackend(getApplicationContext());
 415		this.accounts = databaseBackend.getAccounts();
 416
 417		for (Account account : this.accounts) {
 418			this.databaseBackend.readRoster(account.getRoster());
 419		}
 420		this.mergePhoneContactsWithRoster();
 421		this.getConversations();
 422
 423		getContentResolver().registerContentObserver(
 424				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 425		this.pgpServiceConnection = new OpenPgpServiceConnection(
 426				getApplicationContext(), "org.sufficientlysecure.keychain");
 427		this.pgpServiceConnection.bindToService();
 428
 429		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 430		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 431				"XmppConnectionService");
 432	}
 433
 434	@Override
 435	public void onDestroy() {
 436		super.onDestroy();
 437		this.logoutAndSave();
 438	}
 439
 440	@Override
 441	public void onTaskRemoved(Intent rootIntent) {
 442		super.onTaskRemoved(rootIntent);
 443		this.logoutAndSave();
 444	}
 445
 446	private void logoutAndSave() {
 447		for (Account account : accounts) {
 448			databaseBackend.writeRoster(account.getRoster());
 449			if (account.getXmppConnection() != null) {
 450				disconnect(account, false);
 451			}
 452		}
 453		Context context = getApplicationContext();
 454		AlarmManager alarmManager = (AlarmManager) context
 455				.getSystemService(Context.ALARM_SERVICE);
 456		Intent intent = new Intent(context, EventReceiver.class);
 457		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 458		Log.d(Config.LOGTAG, "good bye");
 459		stopSelf();
 460	}
 461
 462	protected void scheduleWakeupCall(int seconds, boolean ping) {
 463		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 464		Context context = getApplicationContext();
 465		AlarmManager alarmManager = (AlarmManager) context
 466				.getSystemService(Context.ALARM_SERVICE);
 467
 468		if (ping) {
 469			if (this.pingIntent == null) {
 470				this.pingIntent = new Intent(context, EventReceiver.class);
 471				this.pingIntent.setAction("ping");
 472				this.pingIntent.putExtra("time", timeToWake);
 473				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 474						this.pingIntent, 0);
 475				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 476						timeToWake, pendingPingIntent);
 477			} else {
 478				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 479				if (scheduledTime < SystemClock.elapsedRealtime()
 480						|| (scheduledTime > timeToWake)) {
 481					this.pingIntent.putExtra("time", timeToWake);
 482					alarmManager.cancel(this.pendingPingIntent);
 483					this.pendingPingIntent = PendingIntent.getBroadcast(
 484							context, 0, this.pingIntent, 0);
 485					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 486							timeToWake, pendingPingIntent);
 487				}
 488			}
 489		} else {
 490			Intent intent = new Intent(context, EventReceiver.class);
 491			intent.setAction("ping_check");
 492			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 493					intent, 0);
 494			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 495					alarmIntent);
 496		}
 497
 498	}
 499
 500	public XmppConnection createConnection(Account account) {
 501		SharedPreferences sharedPref = getPreferences();
 502		account.setResource(sharedPref.getString("resource", "mobile")
 503				.toLowerCase(Locale.getDefault()));
 504		XmppConnection connection = new XmppConnection(account, this);
 505		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 506		connection.setOnStatusChangedListener(this.statusListener);
 507		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 508		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 509		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 510		connection.setOnBindListener(this.mOnBindListener);
 511		connection
 512				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 513		return connection;
 514	}
 515
 516	synchronized public void sendMessage(Message message) {
 517		Account account = message.getConversation().getAccount();
 518		Conversation conv = message.getConversation();
 519		MessagePacket packet = null;
 520		boolean saveInDb = true;
 521		boolean send = false;
 522		if (account.getStatus() == Account.STATUS_ONLINE
 523				&& account.getXmppConnection() != null) {
 524			if (message.getType() == Message.TYPE_IMAGE) {
 525				if (message.getPresence() != null) {
 526					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 527						if (!conv.hasValidOtrSession()
 528								&& (message.getPresence() != null)) {
 529							conv.startOtrSession(this, message.getPresence(),
 530									true);
 531							message.setStatus(Message.STATUS_WAITING);
 532						} else if (conv.hasValidOtrSession()
 533								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 534							mJingleConnectionManager
 535									.createNewConnection(message);
 536						} else if (message.getPresence() == null) {
 537							message.setStatus(Message.STATUS_WAITING);
 538						}
 539					} else {
 540						mJingleConnectionManager.createNewConnection(message);
 541					}
 542				} else {
 543					message.setStatus(Message.STATUS_WAITING);
 544				}
 545			} else {
 546				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 547					if (!conv.hasValidOtrSession()
 548							&& (message.getPresence() != null)) {
 549						conv.startOtrSession(this, message.getPresence(), true);
 550						message.setStatus(Message.STATUS_WAITING);
 551					} else if (conv.hasValidOtrSession()
 552							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 553						message.setPresence(conv.getOtrSession().getSessionID()
 554								.getUserID());
 555						packet = mMessageGenerator.generateOtrChat(message);
 556						send = true;
 557
 558					} else if (message.getPresence() == null) {
 559						message.setStatus(Message.STATUS_WAITING);
 560					}
 561				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 562					message.getConversation().endOtrIfNeeded();
 563					failWaitingOtrMessages(message.getConversation());
 564					packet = mMessageGenerator.generatePgpChat(message);
 565					send = true;
 566				} else {
 567					message.getConversation().endOtrIfNeeded();
 568					failWaitingOtrMessages(message.getConversation());
 569					packet = mMessageGenerator.generateChat(message);
 570					send = true;
 571				}
 572			}
 573			if (!account.getXmppConnection().getFeatures().sm()
 574					&& conv.getMode() != Conversation.MODE_MULTI) {
 575				message.setStatus(Message.STATUS_SEND);
 576			}
 577		} else {
 578			message.setStatus(Message.STATUS_WAITING);
 579			if (message.getType() == Message.TYPE_TEXT) {
 580				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 581					String pgpBody = message.getEncryptedBody();
 582					String decryptedBody = message.getBody();
 583					message.setBody(pgpBody);
 584					message.setEncryption(Message.ENCRYPTION_PGP);
 585					databaseBackend.createMessage(message);
 586					saveInDb = false;
 587					message.setBody(decryptedBody);
 588					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 589				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 590					if (conv.hasValidOtrSession()) {
 591						message.setPresence(conv.getOtrSession().getSessionID()
 592								.getUserID());
 593					} else if (!conv.hasValidOtrSession()
 594							&& message.getPresence() != null) {
 595						conv.startOtrSession(this, message.getPresence(), false);
 596					}
 597				}
 598			}
 599
 600		}
 601		conv.getMessages().add(message);
 602		if (saveInDb) {
 603			if (message.getEncryption() == Message.ENCRYPTION_NONE
 604					|| saveEncryptedMessages()) {
 605				databaseBackend.createMessage(message);
 606			}
 607		}
 608		if ((send) && (packet != null)) {
 609			sendMessagePacket(account, packet);
 610		}
 611		updateConversationUi();
 612	}
 613
 614	private void sendUnsendMessages(Conversation conversation) {
 615		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 616			int status = conversation.getMessages().get(i).getStatus();
 617			if (status == Message.STATUS_WAITING) {
 618				resendMessage(conversation.getMessages().get(i));
 619			}
 620		}
 621	}
 622
 623	private void resendMessage(Message message) {
 624		Account account = message.getConversation().getAccount();
 625		MessagePacket packet = null;
 626		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 627			Presences presences = message.getConversation().getContact()
 628					.getPresences();
 629			if (!message.getConversation().hasValidOtrSession()) {
 630				if ((message.getPresence() != null)
 631						&& (presences.has(message.getPresence()))) {
 632					message.getConversation().startOtrSession(this,
 633							message.getPresence(), true);
 634				} else {
 635					if (presences.size() == 1) {
 636						String presence = presences.asStringArray()[0];
 637						message.getConversation().startOtrSession(this,
 638								presence, true);
 639					}
 640				}
 641			} else {
 642				if (message.getConversation().getOtrSession()
 643						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 644					if (message.getType() == Message.TYPE_TEXT) {
 645						packet = mMessageGenerator.generateOtrChat(message,
 646								true);
 647					} else if (message.getType() == Message.TYPE_IMAGE) {
 648						mJingleConnectionManager.createNewConnection(message);
 649					}
 650				}
 651			}
 652		} else if (message.getType() == Message.TYPE_TEXT) {
 653			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 654				packet = mMessageGenerator.generateChat(message, true);
 655			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 656					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 657				packet = mMessageGenerator.generatePgpChat(message, true);
 658			}
 659		} else if (message.getType() == Message.TYPE_IMAGE) {
 660			Presences presences = message.getConversation().getContact()
 661					.getPresences();
 662			if ((message.getPresence() != null)
 663					&& (presences.has(message.getPresence()))) {
 664				markMessage(message, Message.STATUS_OFFERED);
 665				mJingleConnectionManager.createNewConnection(message);
 666			} else {
 667				if (presences.size() == 1) {
 668					String presence = presences.asStringArray()[0];
 669					message.setPresence(presence);
 670					markMessage(message, Message.STATUS_OFFERED);
 671					mJingleConnectionManager.createNewConnection(message);
 672				}
 673			}
 674		}
 675		if (packet != null) {
 676			if (!account.getXmppConnection().getFeatures().sm()
 677					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 678				markMessage(message, Message.STATUS_SEND);
 679			} else {
 680				markMessage(message, Message.STATUS_UNSEND);
 681			}
 682			sendMessagePacket(account, packet);
 683		}
 684	}
 685
 686	public void fetchRosterFromServer(Account account) {
 687		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 688		if (!"".equals(account.getRosterVersion())) {
 689			Log.d(Config.LOGTAG, account.getJid()
 690					+ ": fetching roster version " + account.getRosterVersion());
 691		} else {
 692			Log.d(Config.LOGTAG, account.getJid() + ": fetching roster");
 693		}
 694		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 695				account.getRosterVersion());
 696		account.getXmppConnection().sendIqPacket(iqPacket,
 697				new OnIqPacketReceived() {
 698
 699					@Override
 700					public void onIqPacketReceived(final Account account,
 701							IqPacket packet) {
 702						Element query = packet.findChild("query");
 703						if (query != null) {
 704							account.getRoster().markAllAsNotInRoster();
 705							mIqParser.rosterItems(account, query);
 706						}
 707					}
 708				});
 709	}
 710
 711	public void fetchBookmarks(Account account) {
 712		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 713		Element query = iqPacket.query("jabber:iq:private");
 714		query.addChild("storage", "storage:bookmarks");
 715		OnIqPacketReceived callback = new OnIqPacketReceived() {
 716
 717			@Override
 718			public void onIqPacketReceived(Account account, IqPacket packet) {
 719				Element query = packet.query();
 720				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 721				Element storage = query.findChild("storage",
 722						"storage:bookmarks");
 723				if (storage != null) {
 724					for (Element item : storage.getChildren()) {
 725						if (item.getName().equals("conference")) {
 726							Bookmark bookmark = Bookmark.parse(item, account);
 727							bookmarks.add(bookmark);
 728							Conversation conversation = find(bookmark);
 729							if (conversation != null) {
 730								conversation.setBookmark(bookmark);
 731							} else {
 732								if (bookmark.autojoin()) {
 733									conversation = findOrCreateConversation(
 734											account, bookmark.getJid(), true);
 735									conversation.setBookmark(bookmark);
 736									joinMuc(conversation);
 737								}
 738							}
 739						}
 740					}
 741				}
 742				account.setBookmarks(bookmarks);
 743			}
 744		};
 745		sendIqPacket(account, iqPacket, callback);
 746
 747	}
 748
 749	public void pushBookmarks(Account account) {
 750		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 751		Element query = iqPacket.query("jabber:iq:private");
 752		Element storage = query.addChild("storage", "storage:bookmarks");
 753		for (Bookmark bookmark : account.getBookmarks()) {
 754			storage.addChild(bookmark);
 755		}
 756		sendIqPacket(account, iqPacket, null);
 757	}
 758
 759	private void mergePhoneContactsWithRoster() {
 760		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 761				new OnPhoneContactsLoadedListener() {
 762					@Override
 763					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 764						for (Account account : accounts) {
 765							account.getRoster().clearSystemAccounts();
 766						}
 767						for (Bundle phoneContact : phoneContacts) {
 768							for (Account account : accounts) {
 769								String jid = phoneContact.getString("jid");
 770								Contact contact = account.getRoster()
 771										.getContact(jid);
 772								String systemAccount = phoneContact
 773										.getInt("phoneid")
 774										+ "#"
 775										+ phoneContact.getString("lookup");
 776								contact.setSystemAccount(systemAccount);
 777								contact.setPhotoUri(phoneContact
 778										.getString("photouri"));
 779								contact.setSystemName(phoneContact
 780										.getString("displayname"));
 781							}
 782						}
 783					}
 784				});
 785	}
 786
 787	public List<Conversation> getConversations() {
 788		if (this.conversations == null) {
 789			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 790			for (Account account : this.accounts) {
 791				accountLookupTable.put(account.getUuid(), account);
 792			}
 793			this.conversations = databaseBackend
 794					.getConversations(Conversation.STATUS_AVAILABLE);
 795			for (Conversation conv : this.conversations) {
 796				Account account = accountLookupTable.get(conv.getAccountUuid());
 797				conv.setAccount(account);
 798				conv.setMessages(databaseBackend.getMessages(conv, 50));
 799			}
 800		}
 801
 802		return this.conversations;
 803	}
 804
 805	public void populateWithOrderedConversations(List<Conversation> list) {
 806		populateWithOrderedConversations(list, true);
 807	}
 808
 809	public void populateWithOrderedConversations(List<Conversation> list,
 810			boolean includeConferences) {
 811		list.clear();
 812		if (includeConferences) {
 813			list.addAll(getConversations());
 814		} else {
 815			for (Conversation conversation : getConversations()) {
 816				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 817					list.add(conversation);
 818				}
 819			}
 820		}
 821		Collections.sort(list, new Comparator<Conversation>() {
 822			@Override
 823			public int compare(Conversation lhs, Conversation rhs) {
 824				Message left = lhs.getLatestMessage();
 825				Message right = rhs.getLatestMessage();
 826				if (left.getTimeSent() > right.getTimeSent()) {
 827					return -1;
 828				} else if (left.getTimeSent() < right.getTimeSent()) {
 829					return 1;
 830				} else {
 831					return 0;
 832				}
 833			}
 834		});
 835	}
 836
 837	public int loadMoreMessages(Conversation conversation, long timestamp) {
 838		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 839				timestamp);
 840		for (Message message : messages) {
 841			message.setConversation(conversation);
 842		}
 843		conversation.getMessages().addAll(0, messages);
 844		return messages.size();
 845	}
 846
 847	public List<Account> getAccounts() {
 848		return this.accounts;
 849	}
 850
 851	public Conversation find(List<Conversation> haystack, Contact contact) {
 852		for (Conversation conversation : haystack) {
 853			if (conversation.getContact() == contact) {
 854				return conversation;
 855			}
 856		}
 857		return null;
 858	}
 859
 860	public Conversation find(List<Conversation> haystack, Account account,
 861			String jid) {
 862		for (Conversation conversation : haystack) {
 863			if ((account == null || conversation.getAccount().equals(account))
 864					&& (conversation.getContactJid().split("/", 2)[0]
 865							.equals(jid))) {
 866				return conversation;
 867			}
 868		}
 869		return null;
 870	}
 871
 872	public Conversation findOrCreateConversation(Account account, String jid,
 873			boolean muc) {
 874		Conversation conversation = find(account, jid);
 875		if (conversation != null) {
 876			return conversation;
 877		}
 878		conversation = databaseBackend.findConversation(account, jid);
 879		if (conversation != null) {
 880			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 881			conversation.setAccount(account);
 882			if (muc) {
 883				conversation.setMode(Conversation.MODE_MULTI);
 884			} else {
 885				conversation.setMode(Conversation.MODE_SINGLE);
 886			}
 887			conversation.setMessages(databaseBackend.getMessages(conversation,
 888					50));
 889			this.databaseBackend.updateConversation(conversation);
 890		} else {
 891			String conversationName;
 892			Contact contact = account.getRoster().getContact(jid);
 893			if (contact != null) {
 894				conversationName = contact.getDisplayName();
 895			} else {
 896				conversationName = jid.split("@")[0];
 897			}
 898			if (muc) {
 899				conversation = new Conversation(conversationName, account, jid,
 900						Conversation.MODE_MULTI);
 901			} else {
 902				conversation = new Conversation(conversationName, account, jid,
 903						Conversation.MODE_SINGLE);
 904			}
 905			this.databaseBackend.createConversation(conversation);
 906		}
 907		this.conversations.add(conversation);
 908		updateConversationUi();
 909		return conversation;
 910	}
 911
 912	public void archiveConversation(Conversation conversation) {
 913		if (conversation.getMode() == Conversation.MODE_MULTI) {
 914			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
 915				Bookmark bookmark = conversation.getBookmark();
 916				if (bookmark != null && bookmark.autojoin()) {
 917					bookmark.setAutojoin(false);
 918					pushBookmarks(bookmark.getAccount());
 919				}
 920			}
 921			leaveMuc(conversation);
 922		} else {
 923			conversation.endOtrIfNeeded();
 924		}
 925		this.databaseBackend.updateConversation(conversation);
 926		this.conversations.remove(conversation);
 927		updateConversationUi();
 928	}
 929
 930	public void clearConversationHistory(Conversation conversation) {
 931		this.databaseBackend.deleteMessagesInConversation(conversation);
 932		this.fileBackend.removeFiles(conversation);
 933		conversation.getMessages().clear();
 934		updateConversationUi();
 935	}
 936
 937	public int getConversationCount() {
 938		return this.databaseBackend.getConversationCount();
 939	}
 940
 941	public void createAccount(Account account) {
 942		databaseBackend.createAccount(account);
 943		this.accounts.add(account);
 944		this.reconnectAccount(account, false);
 945		updateAccountUi();
 946	}
 947
 948	public void updateAccount(Account account) {
 949		this.statusListener.onStatusChanged(account);
 950		databaseBackend.updateAccount(account);
 951		reconnectAccount(account, false);
 952		updateAccountUi();
 953		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 954	}
 955
 956	public void deleteAccount(Account account) {
 957		for (Conversation conversation : conversations) {
 958			if (conversation.getAccount() == account) {
 959				if (conversation.getMode() == Conversation.MODE_MULTI) {
 960					leaveMuc(conversation);
 961				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
 962					conversation.endOtrIfNeeded();
 963				}
 964				conversations.remove(conversation);
 965			}
 966		}
 967		if (account.getXmppConnection() != null) {
 968			this.disconnect(account, true);
 969		}
 970		databaseBackend.deleteAccount(account);
 971		this.accounts.remove(account);
 972		updateAccountUi();
 973		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 974	}
 975
 976	public void setOnConversationListChangedListener(
 977			OnConversationUpdate listener) {
 978		this.mNotificationService.deactivateGracePeriod();
 979		if (checkListeners()) {
 980			switchToForeground();
 981		}
 982		this.mOnConversationUpdate = listener;
 983		this.mNotificationService.setIsInForeground(true);
 984		this.convChangedListenerCount++;
 985	}
 986
 987	public void removeOnConversationListChangedListener() {
 988		this.convChangedListenerCount--;
 989		if (this.convChangedListenerCount == 0) {
 990			this.mOnConversationUpdate = null;
 991			this.mNotificationService.setIsInForeground(false);
 992			if (checkListeners()) {
 993				switchToBackground();
 994			}
 995		}
 996	}
 997
 998	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
 999		this.mNotificationService.deactivateGracePeriod();
1000		if (checkListeners()) {
1001			switchToForeground();
1002		}
1003		this.mOnAccountUpdate = listener;
1004		this.accountChangedListenerCount++;
1005	}
1006
1007	public void removeOnAccountListChangedListener() {
1008		this.accountChangedListenerCount--;
1009		if (this.accountChangedListenerCount == 0) {
1010			this.mOnAccountUpdate = null;
1011			if (checkListeners()) {
1012				switchToBackground();
1013			}
1014		}
1015	}
1016
1017	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1018		this.mNotificationService.deactivateGracePeriod();
1019		if (checkListeners()) {
1020			switchToForeground();
1021		}
1022		this.mOnRosterUpdate = listener;
1023		this.rosterChangedListenerCount++;
1024	}
1025
1026	public void removeOnRosterUpdateListener() {
1027		this.rosterChangedListenerCount--;
1028		if (this.rosterChangedListenerCount == 0) {
1029			this.mOnRosterUpdate = null;
1030			if (checkListeners()) {
1031				switchToBackground();
1032			}
1033		}
1034	}
1035
1036	private boolean checkListeners() {
1037		return (this.mOnAccountUpdate == null
1038				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1039	}
1040
1041	private void switchToForeground() {
1042		for (Account account : getAccounts()) {
1043			if (account.getStatus() == Account.STATUS_ONLINE) {
1044				XmppConnection connection = account.getXmppConnection();
1045				if (connection != null && connection.getFeatures().csi()) {
1046					connection.sendActive();
1047					Log.d(Config.LOGTAG, account.getJid()
1048							+ " sending csi//active");
1049				}
1050			}
1051		}
1052	}
1053
1054	private void switchToBackground() {
1055		for (Account account : getAccounts()) {
1056			if (account.getStatus() == Account.STATUS_ONLINE) {
1057				XmppConnection connection = account.getXmppConnection();
1058				if (connection != null && connection.getFeatures().csi()) {
1059					connection.sendInactive();
1060					Log.d(Config.LOGTAG, account.getJid()
1061							+ " sending csi//inactive");
1062				}
1063			}
1064		}
1065	}
1066
1067	public void connectMultiModeConversations(Account account) {
1068		List<Conversation> conversations = getConversations();
1069		for (int i = 0; i < conversations.size(); i++) {
1070			Conversation conversation = conversations.get(i);
1071			if ((conversation.getMode() == Conversation.MODE_MULTI)
1072					&& (conversation.getAccount() == account)) {
1073				joinMuc(conversation);
1074			}
1075		}
1076	}
1077
1078	public void joinMuc(Conversation conversation) {
1079		Account account = conversation.getAccount();
1080		account.pendingConferenceJoins.remove(conversation);
1081		account.pendingConferenceLeaves.remove(conversation);
1082		if (account.getStatus() == Account.STATUS_ONLINE) {
1083			Log.d(Config.LOGTAG,
1084					"joining conversation " + conversation.getContactJid());
1085			String nick = conversation.getMucOptions().getProposedNick();
1086			conversation.getMucOptions().setJoinNick(nick);
1087			PresencePacket packet = new PresencePacket();
1088			String joinJid = conversation.getMucOptions().getJoinJid();
1089			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1090			Element x = new Element("x");
1091			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1092			if (conversation.getMucOptions().getPassword() != null) {
1093				Element password = x.addChild("password");
1094				password.setContent(conversation.getMucOptions().getPassword());
1095			}
1096			String sig = account.getPgpSignature();
1097			if (sig != null) {
1098				packet.addChild("status").setContent("online");
1099				packet.addChild("x", "jabber:x:signed").setContent(sig);
1100			}
1101			if (conversation.getMessages().size() != 0) {
1102				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1103						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1104				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1105				Date date = new Date(conversation.getLatestMessage()
1106						.getTimeSent() + 1000);
1107				x.addChild("history").setAttribute("since",
1108						mDateFormat.format(date));
1109			}
1110			packet.addChild(x);
1111			sendPresencePacket(account, packet);
1112			if (!joinJid.equals(conversation.getContactJid())) {
1113				conversation.setContactJid(joinJid);
1114				databaseBackend.updateConversation(conversation);
1115			}
1116		} else {
1117			account.pendingConferenceJoins.add(conversation);
1118		}
1119	}
1120
1121	private OnRenameListener renameListener = null;
1122	private IqGenerator mIqGenerator = new IqGenerator(this);
1123
1124	public void setOnRenameListener(OnRenameListener listener) {
1125		this.renameListener = listener;
1126	}
1127
1128	public void providePasswordForMuc(Conversation conversation, String password) {
1129		if (conversation.getMode() == Conversation.MODE_MULTI) {
1130			conversation.getMucOptions().setPassword(password);
1131			if (conversation.getBookmark() != null) {
1132				conversation.getBookmark().setAutojoin(true);
1133				pushBookmarks(conversation.getAccount());
1134			}
1135			databaseBackend.updateConversation(conversation);
1136			joinMuc(conversation);
1137		}
1138	}
1139
1140	public void renameInMuc(final Conversation conversation, final String nick) {
1141		final MucOptions options = conversation.getMucOptions();
1142		options.setJoinNick(nick);
1143		if (options.online()) {
1144			Account account = conversation.getAccount();
1145			options.setOnRenameListener(new OnRenameListener() {
1146
1147				@Override
1148				public void onRename(boolean success) {
1149					if (renameListener != null) {
1150						renameListener.onRename(success);
1151					}
1152					if (success) {
1153						conversation.setContactJid(conversation.getMucOptions()
1154								.getJoinJid());
1155						databaseBackend.updateConversation(conversation);
1156						Bookmark bookmark = conversation.getBookmark();
1157						if (bookmark != null) {
1158							bookmark.setNick(nick);
1159							pushBookmarks(bookmark.getAccount());
1160						}
1161					}
1162				}
1163			});
1164			options.flagAboutToRename();
1165			PresencePacket packet = new PresencePacket();
1166			packet.setAttribute("to", options.getJoinJid());
1167			packet.setAttribute("from", conversation.getAccount().getFullJid());
1168
1169			String sig = account.getPgpSignature();
1170			if (sig != null) {
1171				packet.addChild("status").setContent("online");
1172				packet.addChild("x", "jabber:x:signed").setContent(sig);
1173			}
1174			sendPresencePacket(account, packet);
1175		} else {
1176			conversation.setContactJid(options.getJoinJid());
1177			databaseBackend.updateConversation(conversation);
1178			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1179				Bookmark bookmark = conversation.getBookmark();
1180				if (bookmark != null) {
1181					bookmark.setNick(nick);
1182					pushBookmarks(bookmark.getAccount());
1183				}
1184				joinMuc(conversation);
1185			}
1186		}
1187	}
1188
1189	public void leaveMuc(Conversation conversation) {
1190		Account account = conversation.getAccount();
1191		account.pendingConferenceJoins.remove(conversation);
1192		account.pendingConferenceLeaves.remove(conversation);
1193		if (account.getStatus() == Account.STATUS_ONLINE) {
1194			PresencePacket packet = new PresencePacket();
1195			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1196			packet.setAttribute("from", conversation.getAccount().getFullJid());
1197			packet.setAttribute("type", "unavailable");
1198			sendPresencePacket(conversation.getAccount(), packet);
1199			conversation.getMucOptions().setOffline();
1200			conversation.deregisterWithBookmark();
1201			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1202					+ " leaving muc " + conversation.getContactJid());
1203		} else {
1204			account.pendingConferenceLeaves.add(conversation);
1205		}
1206	}
1207
1208	public void disconnect(Account account, boolean force) {
1209		if ((account.getStatus() == Account.STATUS_ONLINE)
1210				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1211			if (!force) {
1212				List<Conversation> conversations = getConversations();
1213				for (int i = 0; i < conversations.size(); i++) {
1214					Conversation conversation = conversations.get(i);
1215					if (conversation.getAccount() == account) {
1216						if (conversation.getMode() == Conversation.MODE_MULTI) {
1217							leaveMuc(conversation);
1218						} else {
1219							conversation.endOtrIfNeeded();
1220						}
1221					}
1222				}
1223			}
1224			account.getXmppConnection().disconnect(force);
1225		}
1226	}
1227
1228	@Override
1229	public IBinder onBind(Intent intent) {
1230		return mBinder;
1231	}
1232
1233	public void updateMessage(Message message) {
1234		databaseBackend.updateMessage(message);
1235	}
1236
1237	protected void syncDirtyContacts(Account account) {
1238		for (Contact contact : account.getRoster().getContacts()) {
1239			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1240				pushContactToServer(contact);
1241			}
1242			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1243				deleteContactOnServer(contact);
1244			}
1245		}
1246	}
1247
1248	public void createContact(Contact contact) {
1249		SharedPreferences sharedPref = getPreferences();
1250		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1251		if (autoGrant) {
1252			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1253			contact.setOption(Contact.Options.ASKING);
1254		}
1255		pushContactToServer(contact);
1256	}
1257
1258	public void onOtrSessionEstablished(Conversation conversation) {
1259		Account account = conversation.getAccount();
1260		List<Message> messages = conversation.getMessages();
1261		Session otrSession = conversation.getOtrSession();
1262		Log.d(Config.LOGTAG,
1263				account.getJid() + " otr session established with "
1264						+ conversation.getContactJid() + "/"
1265						+ otrSession.getSessionID().getUserID());
1266		for (int i = 0; i < messages.size(); ++i) {
1267			Message msg = messages.get(i);
1268			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1269					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1270				msg.setPresence(otrSession.getSessionID().getUserID());
1271				if (msg.getType() == Message.TYPE_TEXT) {
1272					MessagePacket outPacket = mMessageGenerator
1273							.generateOtrChat(msg, true);
1274					if (outPacket != null) {
1275						msg.setStatus(Message.STATUS_SEND);
1276						databaseBackend.updateMessage(msg);
1277						sendMessagePacket(account, outPacket);
1278					}
1279				} else if (msg.getType() == Message.TYPE_IMAGE) {
1280					mJingleConnectionManager.createNewConnection(msg);
1281				}
1282			}
1283		}
1284		updateConversationUi();
1285	}
1286
1287	public boolean renewSymmetricKey(Conversation conversation) {
1288		Account account = conversation.getAccount();
1289		byte[] symmetricKey = new byte[32];
1290		this.mRandom.nextBytes(symmetricKey);
1291		Session otrSession = conversation.getOtrSession();
1292		if (otrSession != null) {
1293			MessagePacket packet = new MessagePacket();
1294			packet.setType(MessagePacket.TYPE_CHAT);
1295			packet.setFrom(account.getFullJid());
1296			packet.addChild("private", "urn:xmpp:carbons:2");
1297			packet.addChild("no-copy", "urn:xmpp:hints");
1298			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1299					+ otrSession.getSessionID().getUserID());
1300			try {
1301				packet.setBody(otrSession
1302						.transformSending(CryptoHelper.FILETRANSFER
1303								+ CryptoHelper.bytesToHex(symmetricKey)));
1304				sendMessagePacket(account, packet);
1305				conversation.setSymmetricKey(symmetricKey);
1306				return true;
1307			} catch (OtrException e) {
1308				return false;
1309			}
1310		}
1311		return false;
1312	}
1313
1314	public void pushContactToServer(Contact contact) {
1315		contact.resetOption(Contact.Options.DIRTY_DELETE);
1316		contact.setOption(Contact.Options.DIRTY_PUSH);
1317		Account account = contact.getAccount();
1318		if (account.getStatus() == Account.STATUS_ONLINE) {
1319			boolean ask = contact.getOption(Contact.Options.ASKING);
1320			boolean sendUpdates = contact
1321					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1322					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1323			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1324			iq.query("jabber:iq:roster").addChild(contact.asElement());
1325			account.getXmppConnection().sendIqPacket(iq, null);
1326			if (sendUpdates) {
1327				sendPresencePacket(account,
1328						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1329			}
1330			if (ask) {
1331				sendPresencePacket(account,
1332						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1333			}
1334		}
1335	}
1336
1337	public void publishAvatar(Account account, Uri image,
1338			final UiCallback<Avatar> callback) {
1339		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1340		final int size = Config.AVATAR_SIZE;
1341		final Avatar avatar = getFileBackend()
1342				.getPepAvatar(image, size, format);
1343		if (avatar != null) {
1344			avatar.height = size;
1345			avatar.width = size;
1346			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1347				avatar.type = "image/webp";
1348			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1349				avatar.type = "image/jpeg";
1350			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1351				avatar.type = "image/png";
1352			}
1353			if (!getFileBackend().save(avatar)) {
1354				callback.error(R.string.error_saving_avatar, avatar);
1355				return;
1356			}
1357			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1358			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1359
1360				@Override
1361				public void onIqPacketReceived(Account account, IqPacket result) {
1362					if (result.getType() == IqPacket.TYPE_RESULT) {
1363						IqPacket packet = XmppConnectionService.this.mIqGenerator
1364								.publishAvatarMetadata(avatar);
1365						sendIqPacket(account, packet, new OnIqPacketReceived() {
1366
1367							@Override
1368							public void onIqPacketReceived(Account account,
1369									IqPacket result) {
1370								if (result.getType() == IqPacket.TYPE_RESULT) {
1371									if (account.setAvatar(avatar.getFilename())) {
1372										databaseBackend.updateAccount(account);
1373									}
1374									callback.success(avatar);
1375								} else {
1376									callback.error(
1377											R.string.error_publish_avatar_server_reject,
1378											avatar);
1379								}
1380							}
1381						});
1382					} else {
1383						callback.error(
1384								R.string.error_publish_avatar_server_reject,
1385								avatar);
1386					}
1387				}
1388			});
1389		} else {
1390			callback.error(R.string.error_publish_avatar_converting, null);
1391		}
1392	}
1393
1394	public void fetchAvatar(Account account, Avatar avatar) {
1395		fetchAvatar(account, avatar, null);
1396	}
1397
1398	public void fetchAvatar(Account account, final Avatar avatar,
1399			final UiCallback<Avatar> callback) {
1400		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1401		sendIqPacket(account, packet, new OnIqPacketReceived() {
1402
1403			@Override
1404			public void onIqPacketReceived(Account account, IqPacket result) {
1405				final String ERROR = account.getJid()
1406						+ ": fetching avatar for " + avatar.owner + " failed ";
1407				if (result.getType() == IqPacket.TYPE_RESULT) {
1408					avatar.image = mIqParser.avatarData(result);
1409					if (avatar.image != null) {
1410						if (getFileBackend().save(avatar)) {
1411							if (account.getJid().equals(avatar.owner)) {
1412								if (account.setAvatar(avatar.getFilename())) {
1413									databaseBackend.updateAccount(account);
1414								}
1415							} else {
1416								Contact contact = account.getRoster()
1417										.getContact(avatar.owner);
1418								contact.setAvatar(avatar.getFilename());
1419							}
1420							if (callback != null) {
1421								callback.success(avatar);
1422							}
1423							Log.d(Config.LOGTAG, account.getJid()
1424									+ ": succesfully fetched avatar for "
1425									+ avatar.owner);
1426							return;
1427						}
1428					} else {
1429
1430						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1431					}
1432				} else {
1433					Element error = result.findChild("error");
1434					if (error == null) {
1435						Log.d(Config.LOGTAG, ERROR + "(server error)");
1436					} else {
1437						Log.d(Config.LOGTAG, ERROR + error.toString());
1438					}
1439				}
1440				if (callback != null) {
1441					callback.error(0, null);
1442				}
1443
1444			}
1445		});
1446	}
1447
1448	public void checkForAvatar(Account account,
1449			final UiCallback<Avatar> callback) {
1450		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1451		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1452
1453			@Override
1454			public void onIqPacketReceived(Account account, IqPacket packet) {
1455				if (packet.getType() == IqPacket.TYPE_RESULT) {
1456					Element pubsub = packet.findChild("pubsub",
1457							"http://jabber.org/protocol/pubsub");
1458					if (pubsub != null) {
1459						Element items = pubsub.findChild("items");
1460						if (items != null) {
1461							Avatar avatar = Avatar.parseMetadata(items);
1462							if (avatar != null) {
1463								avatar.owner = account.getJid();
1464								if (fileBackend.isAvatarCached(avatar)) {
1465									if (account.setAvatar(avatar.getFilename())) {
1466										databaseBackend.updateAccount(account);
1467									}
1468									callback.success(avatar);
1469								} else {
1470									fetchAvatar(account, avatar, callback);
1471								}
1472								return;
1473							}
1474						}
1475					}
1476				}
1477				callback.error(0, null);
1478			}
1479		});
1480	}
1481
1482	public void deleteContactOnServer(Contact contact) {
1483		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1484		contact.resetOption(Contact.Options.DIRTY_PUSH);
1485		contact.setOption(Contact.Options.DIRTY_DELETE);
1486		Account account = contact.getAccount();
1487		if (account.getStatus() == Account.STATUS_ONLINE) {
1488			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1489			Element item = iq.query("jabber:iq:roster").addChild("item");
1490			item.setAttribute("jid", contact.getJid());
1491			item.setAttribute("subscription", "remove");
1492			account.getXmppConnection().sendIqPacket(iq, null);
1493		}
1494	}
1495
1496	public void updateConversation(Conversation conversation) {
1497		this.databaseBackend.updateConversation(conversation);
1498	}
1499
1500	public void reconnectAccount(final Account account, final boolean force) {
1501		new Thread(new Runnable() {
1502
1503			@Override
1504			public void run() {
1505				if (account.getXmppConnection() != null) {
1506					disconnect(account, force);
1507				}
1508				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1509					if (account.getXmppConnection() == null) {
1510						account.setXmppConnection(createConnection(account));
1511					}
1512					Thread thread = new Thread(account.getXmppConnection());
1513					thread.start();
1514					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1515							false);
1516				} else {
1517					account.getRoster().clearPresences();
1518					account.setXmppConnection(null);
1519				}
1520			}
1521		}).start();
1522	}
1523
1524	public void invite(Conversation conversation, String contact) {
1525		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1526		sendMessagePacket(conversation.getAccount(), packet);
1527	}
1528
1529	public void resetSendingToWaiting(Account account) {
1530		for (Conversation conversation : getConversations()) {
1531			if (conversation.getAccount() == account) {
1532				for (Message message : conversation.getMessages()) {
1533					if (message.getType() != Message.TYPE_IMAGE
1534							&& message.getStatus() == Message.STATUS_UNSEND) {
1535						markMessage(message, Message.STATUS_WAITING);
1536					}
1537				}
1538			}
1539		}
1540	}
1541
1542	public boolean markMessage(Account account, String recipient, String uuid,
1543			int status) {
1544		if (uuid == null) {
1545			return false;
1546		} else {
1547			for (Conversation conversation : getConversations()) {
1548				if (conversation.getContactJid().equals(recipient)
1549						&& conversation.getAccount().equals(account)) {
1550					return markMessage(conversation, uuid, status);
1551				}
1552			}
1553			return false;
1554		}
1555	}
1556
1557	public boolean markMessage(Conversation conversation, String uuid,
1558			int status) {
1559		if (uuid == null) {
1560			return false;
1561		} else {
1562			for (Message message : conversation.getMessages()) {
1563				if (uuid.equals(message.getUuid())
1564						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1565								.equals(message.getRemoteMsgId()))) {
1566					markMessage(message, status);
1567					return true;
1568				}
1569			}
1570			return false;
1571		}
1572	}
1573
1574	public void markMessage(Message message, int status) {
1575		if (status == Message.STATUS_SEND_FAILED
1576				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1577						.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1578			return;
1579		}
1580		message.setStatus(status);
1581		databaseBackend.updateMessage(message);
1582		updateConversationUi();
1583	}
1584
1585	public SharedPreferences getPreferences() {
1586		return PreferenceManager
1587				.getDefaultSharedPreferences(getApplicationContext());
1588	}
1589
1590	public boolean forceEncryption() {
1591		return getPreferences().getBoolean("force_encryption", false);
1592	}
1593
1594	public boolean confirmMessages() {
1595		return getPreferences().getBoolean("confirm_messages", true);
1596	}
1597
1598	public boolean saveEncryptedMessages() {
1599		return !getPreferences().getBoolean("dont_save_encrypted", false);
1600	}
1601
1602	public boolean indicateReceived() {
1603		return getPreferences().getBoolean("indicate_received", false);
1604	}
1605
1606	public void updateConversationUi() {
1607		if (mOnConversationUpdate != null) {
1608			mOnConversationUpdate.onConversationUpdate();
1609		}
1610	}
1611
1612	public void updateAccountUi() {
1613		if (mOnAccountUpdate != null) {
1614			mOnAccountUpdate.onAccountUpdate();
1615		}
1616	}
1617
1618	public void updateRosterUi() {
1619		if (mOnRosterUpdate != null) {
1620			mOnRosterUpdate.onRosterUpdate();
1621		}
1622	}
1623
1624	public Account findAccountByJid(String accountJid) {
1625		for (Account account : this.accounts) {
1626			if (account.getJid().equals(accountJid)) {
1627				return account;
1628			}
1629		}
1630		return null;
1631	}
1632
1633	public Conversation findConversationByUuid(String uuid) {
1634		for (Conversation conversation : getConversations()) {
1635			if (conversation.getUuid().equals(uuid)) {
1636				return conversation;
1637			}
1638		}
1639		return null;
1640	}
1641
1642	public void markRead(Conversation conversation, boolean calledByUi) {
1643		mNotificationService.clear(conversation);
1644		String id = conversation.getLatestMarkableMessageId();
1645		conversation.markRead();
1646		if (confirmMessages() && id != null && calledByUi) {
1647			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1648					+ ": sending read marker for " + conversation.getName());
1649			Account account = conversation.getAccount();
1650			String to = conversation.getContactJid();
1651			this.sendMessagePacket(conversation.getAccount(),
1652					mMessageGenerator.confirm(account, to, id));
1653		}
1654		if (!calledByUi) {
1655			updateConversationUi();
1656		}
1657	}
1658
1659	public void failWaitingOtrMessages(Conversation conversation) {
1660		for (Message message : conversation.getMessages()) {
1661			if (message.getEncryption() == Message.ENCRYPTION_OTR
1662					&& message.getStatus() == Message.STATUS_WAITING) {
1663				markMessage(message, Message.STATUS_SEND_FAILED);
1664			}
1665		}
1666	}
1667
1668	public SecureRandom getRNG() {
1669		return this.mRandom;
1670	}
1671
1672	public MemorizingTrustManager getMemorizingTrustManager() {
1673		return this.mMemorizingTrustManager;
1674	}
1675
1676	public PowerManager getPowerManager() {
1677		return this.pm;
1678	}
1679
1680	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1681		if (account.getStatus() == Account.STATUS_ONLINE) {
1682			MessagePacket error = this.mMessageGenerator
1683					.generateNotAcceptable(packet);
1684			sendMessagePacket(account, error);
1685		}
1686	}
1687
1688	public void syncRosterToDisk(final Account account) {
1689		new Thread(new Runnable() {
1690
1691			@Override
1692			public void run() {
1693				databaseBackend.writeRoster(account.getRoster());
1694			}
1695		}).start();
1696
1697	}
1698
1699	public List<String> getKnownHosts() {
1700		List<String> hosts = new ArrayList<String>();
1701		for (Account account : getAccounts()) {
1702			if (!hosts.contains(account.getServer())) {
1703				hosts.add(account.getServer());
1704			}
1705			for (Contact contact : account.getRoster().getContacts()) {
1706				if (contact.showInRoster()) {
1707					String server = contact.getServer();
1708					if (server != null && !hosts.contains(server)) {
1709						hosts.add(server);
1710					}
1711				}
1712			}
1713		}
1714		return hosts;
1715	}
1716
1717	public List<String> getKnownConferenceHosts() {
1718		ArrayList<String> mucServers = new ArrayList<String>();
1719		for (Account account : accounts) {
1720			if (account.getXmppConnection() != null) {
1721				String server = account.getXmppConnection().getMucServer();
1722				if (server != null && !mucServers.contains(server)) {
1723					mucServers.add(server);
1724				}
1725			}
1726		}
1727		return mucServers;
1728	}
1729
1730	public void sendMessagePacket(Account account, MessagePacket packet) {
1731		XmppConnection connection = account.getXmppConnection();
1732		if (connection != null) {
1733			connection.sendMessagePacket(packet);
1734		}
1735	}
1736
1737	public void sendPresencePacket(Account account, PresencePacket packet) {
1738		XmppConnection connection = account.getXmppConnection();
1739		if (connection != null) {
1740			connection.sendPresencePacket(packet);
1741		}
1742	}
1743
1744	public void sendIqPacket(Account account, IqPacket packet,
1745			OnIqPacketReceived callback) {
1746		XmppConnection connection = account.getXmppConnection();
1747		if (connection != null) {
1748			connection.sendIqPacket(packet, callback);
1749		}
1750	}
1751
1752	public MessageGenerator getMessageGenerator() {
1753		return this.mMessageGenerator;
1754	}
1755
1756	public PresenceGenerator getPresenceGenerator() {
1757		return this.mPresenceGenerator;
1758	}
1759
1760	public IqGenerator getIqGenerator() {
1761		return this.mIqGenerator;
1762	}
1763
1764	public JingleConnectionManager getJingleConnectionManager() {
1765		return this.mJingleConnectionManager;
1766	}
1767
1768	public interface OnConversationUpdate {
1769		public void onConversationUpdate();
1770	}
1771
1772	public interface OnAccountUpdate {
1773		public void onAccountUpdate();
1774	}
1775
1776	public interface OnRosterUpdate {
1777		public void onRosterUpdate();
1778	}
1779
1780	public List<Contact> findContacts(String jid) {
1781		ArrayList<Contact> contacts = new ArrayList<Contact>();
1782		for (Account account : getAccounts()) {
1783			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1784				Contact contact = account.getRoster()
1785						.getContactFromRoster(jid);
1786				if (contact != null) {
1787					contacts.add(contact);
1788				}
1789			}
1790		}
1791		return contacts;
1792	}
1793
1794	public NotificationService getNotificationService() {
1795		return this.mNotificationService;
1796	}
1797
1798	public HttpConnectionManager getHttpConnectionManager() {
1799		return this.mHttpConnectionManager;
1800	}
1801}