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.Downloadable;
  31import eu.siacs.conversations.entities.Message;
  32import eu.siacs.conversations.entities.MucOptions;
  33import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  34import eu.siacs.conversations.entities.Presences;
  35import eu.siacs.conversations.generator.IqGenerator;
  36import eu.siacs.conversations.generator.MessageGenerator;
  37import eu.siacs.conversations.generator.PresenceGenerator;
  38import eu.siacs.conversations.http.HttpConnectionManager;
  39import eu.siacs.conversations.parser.IqParser;
  40import eu.siacs.conversations.parser.MessageParser;
  41import eu.siacs.conversations.parser.PresenceParser;
  42import eu.siacs.conversations.persistance.DatabaseBackend;
  43import eu.siacs.conversations.persistance.FileBackend;
  44import eu.siacs.conversations.ui.UiCallback;
  45import eu.siacs.conversations.utils.CryptoHelper;
  46import eu.siacs.conversations.utils.ExceptionHelper;
  47import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  48import eu.siacs.conversations.utils.PRNGFixes;
  49import eu.siacs.conversations.utils.PhoneHelper;
  50import eu.siacs.conversations.utils.UIHelper;
  51import eu.siacs.conversations.xml.Element;
  52import eu.siacs.conversations.xmpp.OnBindListener;
  53import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  54import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  55import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  56import eu.siacs.conversations.xmpp.OnStatusChanged;
  57import eu.siacs.conversations.xmpp.XmppConnection;
  58import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  59import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  60import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  61import eu.siacs.conversations.xmpp.pep.Avatar;
  62import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  63import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  64import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  65import android.annotation.SuppressLint;
  66import android.app.AlarmManager;
  67import android.app.PendingIntent;
  68import android.app.Service;
  69import android.content.Context;
  70import android.content.Intent;
  71import android.content.SharedPreferences;
  72import android.database.ContentObserver;
  73import android.graphics.Bitmap;
  74import android.net.ConnectivityManager;
  75import android.net.NetworkInfo;
  76import android.net.Uri;
  77import android.os.Binder;
  78import android.os.Bundle;
  79import android.os.FileObserver;
  80import android.os.IBinder;
  81import android.os.PowerManager;
  82import android.os.PowerManager.WakeLock;
  83import android.os.SystemClock;
  84import android.preference.PreferenceManager;
  85import android.provider.ContactsContract;
  86import android.util.Log;
  87
  88public class XmppConnectionService extends Service {
  89
  90	public DatabaseBackend databaseBackend;
  91	private FileBackend fileBackend;
  92
  93	public long startDate;
  94
  95	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  96	public static String ACTION_CLEAR_NOTIFICATION = "clear_notification";
  97
  98	private MemorizingTrustManager mMemorizingTrustManager;
  99
 100	private NotificationService mNotificationService;
 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(this);
 106	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 107
 108	private List<Account> accounts;
 109	private CopyOnWriteArrayList<Conversation> conversations = null;
 110	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 111			this);
 112	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 113			this);
 114
 115	private OnConversationUpdate mOnConversationUpdate = null;
 116	private Integer convChangedListenerCount = 0;
 117	private OnAccountUpdate mOnAccountUpdate = null;
 118	private Integer accountChangedListenerCount = 0;
 119	private OnRosterUpdate mOnRosterUpdate = null;
 120	private Integer rosterChangedListenerCount = 0;
 121	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 122
 123		@Override
 124		public void onContactStatusChanged(Contact contact, boolean online) {
 125			Conversation conversation = find(getConversations(), contact);
 126			if (conversation != null) {
 127				conversation.endOtrIfNeeded();
 128				if (online && (contact.getPresences().size() == 1)) {
 129					sendUnsendMessages(conversation);
 130				}
 131			}
 132		}
 133	};
 134
 135	private SecureRandom mRandom;
 136
 137	private ContentObserver contactObserver = new ContentObserver(null) {
 138		@Override
 139		public void onChange(boolean selfChange) {
 140			super.onChange(selfChange);
 141			Intent intent = new Intent(getApplicationContext(),
 142					XmppConnectionService.class);
 143			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 144			startService(intent);
 145		}
 146	};
 147	
 148	private FileObserver fileObserver = new FileObserver(FileBackend.getConversationsDirectory()) {
 149		
 150		@Override
 151		public void onEvent(int event, String path) {
 152			if (event == FileObserver.DELETE) {
 153				markFileDeleted(path.split("\\.")[0]);
 154			}
 155		}
 156	};
 157
 158	private final IBinder mBinder = new XmppConnectionBinder();
 159	private OnStatusChanged statusListener = new OnStatusChanged() {
 160
 161		@Override
 162		public void onStatusChanged(Account account) {
 163			XmppConnection connection = account.getXmppConnection();
 164			if (mOnAccountUpdate != null) {
 165				mOnAccountUpdate.onAccountUpdate();
 166				;
 167			}
 168			if (account.getStatus() == Account.STATUS_ONLINE) {
 169				for (Conversation conversation : account.pendingConferenceLeaves) {
 170					leaveMuc(conversation);
 171				}
 172				for (Conversation conversation : account.pendingConferenceJoins) {
 173					joinMuc(conversation);
 174				}
 175				mJingleConnectionManager.cancelInTransmission();
 176				List<Conversation> conversations = getConversations();
 177				for (int i = 0; i < conversations.size(); ++i) {
 178					if (conversations.get(i).getAccount() == account) {
 179						conversations.get(i).startOtrIfNeeded();
 180						sendUnsendMessages(conversations.get(i));
 181					}
 182				}
 183				if (connection != null && connection.getFeatures().csi()) {
 184					if (checkListeners()) {
 185						Log.d(Config.LOGTAG, account.getJid()
 186								+ " sending csi//inactive");
 187						connection.sendInactive();
 188					} else {
 189						Log.d(Config.LOGTAG, account.getJid()
 190								+ " sending csi//active");
 191						connection.sendActive();
 192					}
 193				}
 194				syncDirtyContacts(account);
 195				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 196			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 197				resetSendingToWaiting(account);
 198				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 199					int timeToReconnect = mRandom.nextInt(50) + 10;
 200					scheduleWakeupCall(timeToReconnect, false);
 201				}
 202			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 203				databaseBackend.updateAccount(account);
 204				reconnectAccount(account, true);
 205			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 206					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 207				if (connection != null) {
 208					int next = connection.getTimeToNextAttempt();
 209					Log.d(Config.LOGTAG, account.getJid()
 210							+ ": error connecting account. try again in "
 211							+ next + "s for the "
 212							+ (connection.getAttempt() + 1) + " time");
 213					scheduleWakeupCall((int) (next * 1.2), false);
 214				}
 215			}
 216			UIHelper.showErrorNotification(getApplicationContext(),
 217					getAccounts());
 218		}
 219	};
 220
 221	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 222
 223		@Override
 224		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 225			mJingleConnectionManager.deliverPacket(account, packet);
 226		}
 227	};
 228
 229	private OpenPgpServiceConnection pgpServiceConnection;
 230	private PgpEngine mPgpEngine = null;
 231	private Intent pingIntent;
 232	private PendingIntent pendingPingIntent = null;
 233	private WakeLock wakeLock;
 234	private PowerManager pm;
 235	private OnBindListener mOnBindListener = new OnBindListener() {
 236
 237		@Override
 238		public void onBind(final Account account) {
 239			account.getRoster().clearPresences();
 240			account.clearPresences(); // self presences
 241			account.pendingConferenceJoins.clear();
 242			account.pendingConferenceLeaves.clear();
 243			fetchRosterFromServer(account);
 244			fetchBookmarks(account);
 245			sendPresencePacket(account,
 246					mPresenceGenerator.sendPresence(account));
 247			connectMultiModeConversations(account);
 248			updateConversationUi();
 249		}
 250	};
 251
 252	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 253
 254		@Override
 255		public void onMessageAcknowledged(Account account, String uuid) {
 256			for (Conversation conversation : getConversations()) {
 257				if (conversation.getAccount() == account) {
 258					for (Message message : conversation.getMessages()) {
 259						if ((message.getStatus() == Message.STATUS_UNSEND || message
 260								.getStatus() == Message.STATUS_WAITING)
 261								&& message.getUuid().equals(uuid)) {
 262							markMessage(message, Message.STATUS_SEND);
 263							return;
 264						}
 265					}
 266				}
 267			}
 268		}
 269	};
 270
 271	public PgpEngine getPgpEngine() {
 272		if (pgpServiceConnection.isBound()) {
 273			if (this.mPgpEngine == null) {
 274				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 275						getApplicationContext(),
 276						pgpServiceConnection.getService()), this);
 277			}
 278			return mPgpEngine;
 279		} else {
 280			return null;
 281		}
 282
 283	}
 284
 285	public FileBackend getFileBackend() {
 286		return this.fileBackend;
 287	}
 288
 289	public Message attachImageToConversation(final Conversation conversation,
 290			final Uri uri, final UiCallback<Message> callback) {
 291		final Message message;
 292		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 293			message = new Message(conversation, "",
 294					Message.ENCRYPTION_DECRYPTED);
 295		} else {
 296			message = new Message(conversation, "",
 297					conversation.getNextEncryption(forceEncryption()));
 298		}
 299		message.setPresence(conversation.getNextPresence());
 300		message.setType(Message.TYPE_IMAGE);
 301		message.setStatus(Message.STATUS_OFFERED);
 302		new Thread(new Runnable() {
 303
 304			@Override
 305			public void run() {
 306				try {
 307					getFileBackend().copyImageToPrivateStorage(message, uri);
 308					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 309						getPgpEngine().encrypt(message, callback);
 310					} else {
 311						callback.success(message);
 312					}
 313				} catch (FileBackend.ImageCopyException e) {
 314					callback.error(e.getResId(), message);
 315				}
 316			}
 317		}).start();
 318		return message;
 319	}
 320
 321	public Conversation find(Bookmark bookmark) {
 322		return find(bookmark.getAccount(), bookmark.getJid());
 323	}
 324
 325	public Conversation find(Account account, String jid) {
 326		return find(getConversations(), account, jid);
 327	}
 328
 329	public class XmppConnectionBinder extends Binder {
 330		public XmppConnectionService getService() {
 331			return XmppConnectionService.this;
 332		}
 333	}
 334
 335	@Override
 336	public int onStartCommand(Intent intent, int flags, int startId) {
 337		if (intent != null && intent.getAction() != null) {
 338			if (intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS)) {
 339				mergePhoneContactsWithRoster();
 340				return START_STICKY;
 341			} else if (intent.getAction().equals(Intent.ACTION_SHUTDOWN)) {
 342				logoutAndSave();
 343				return START_NOT_STICKY;
 344			} else if (intent.getAction().equals(ACTION_CLEAR_NOTIFICATION)) {
 345				mNotificationService.clear();
 346			}
 347		}
 348		this.wakeLock.acquire();
 349		
 350		for (Account account : accounts) {
 351			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 352				if (!hasInternetConnection()) {
 353					account.setStatus(Account.STATUS_NO_INTERNET);
 354					if (statusListener != null) {
 355						statusListener.onStatusChanged(account);
 356					}
 357				} else {
 358					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 359						account.setStatus(Account.STATUS_OFFLINE);
 360						if (statusListener != null) {
 361							statusListener.onStatusChanged(account);
 362						}
 363					}
 364					if (account.getStatus() == Account.STATUS_ONLINE) {
 365						long lastReceived = account.getXmppConnection()
 366								.getLastPacketReceived();
 367						long lastSent = account.getXmppConnection()
 368								.getLastPingSent();
 369						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 370							Log.d(Config.LOGTAG, account.getJid()
 371									+ ": ping timeout");
 372							this.reconnectAccount(account, true);
 373						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 374							account.getXmppConnection().sendPing();
 375							this.scheduleWakeupCall(2, false);
 376						}
 377					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 378						if (account.getXmppConnection() == null) {
 379							account.setXmppConnection(this
 380									.createConnection(account));
 381						}
 382						new Thread(account.getXmppConnection()).start();
 383					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 384							&& ((SystemClock.elapsedRealtime() - account
 385									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 386						Log.d(Config.LOGTAG, account.getJid()
 387								+ ": time out during connect reconnecting");
 388						reconnectAccount(account, true);
 389					} else {
 390						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 391							reconnectAccount(account, true);
 392						}
 393					}
 394					// in any case. reschedule wakup call
 395					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 396				}
 397				if (mOnAccountUpdate != null) {
 398					mOnAccountUpdate.onAccountUpdate();
 399				}
 400			}
 401		}
 402		if (wakeLock.isHeld()) {
 403			try {
 404				wakeLock.release();
 405			} catch (RuntimeException re) {
 406			}
 407		}
 408		return START_STICKY;
 409	}
 410	
 411	public boolean hasInternetConnection() {
 412		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 413				.getSystemService(Context.CONNECTIVITY_SERVICE);
 414		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 415		return activeNetwork != null && activeNetwork.isConnected();
 416	}
 417
 418	@SuppressLint("TrulyRandom")
 419	@Override
 420	public void onCreate() {
 421		ExceptionHelper.init(getApplicationContext());
 422		PRNGFixes.apply();
 423		this.mRandom = new SecureRandom();
 424		this.mMemorizingTrustManager = new MemorizingTrustManager(
 425				getApplicationContext());
 426		this.mNotificationService = new NotificationService(this);
 427		this.databaseBackend = DatabaseBackend
 428				.getInstance(getApplicationContext());
 429		this.fileBackend = new FileBackend(getApplicationContext());
 430		this.accounts = databaseBackend.getAccounts();
 431
 432		for (Account account : this.accounts) {
 433			this.databaseBackend.readRoster(account.getRoster());
 434		}
 435		this.mergePhoneContactsWithRoster();
 436		this.getConversations();
 437
 438		getContentResolver().registerContentObserver(
 439				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 440		this.fileObserver.startWatching();
 441		this.pgpServiceConnection = new OpenPgpServiceConnection(
 442				getApplicationContext(), "org.sufficientlysecure.keychain");
 443		this.pgpServiceConnection.bindToService();
 444
 445		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 446		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 447				"XmppConnectionService");
 448	}
 449
 450	@Override
 451	public void onDestroy() {
 452		super.onDestroy();
 453		this.logoutAndSave();
 454	}
 455
 456	@Override
 457	public void onTaskRemoved(Intent rootIntent) {
 458		super.onTaskRemoved(rootIntent);
 459		this.logoutAndSave();
 460	}
 461
 462	private void logoutAndSave() {
 463		for (Account account : accounts) {
 464			databaseBackend.writeRoster(account.getRoster());
 465			if (account.getXmppConnection() != null) {
 466				disconnect(account, false);
 467			}
 468		}
 469		Context context = getApplicationContext();
 470		AlarmManager alarmManager = (AlarmManager) context
 471				.getSystemService(Context.ALARM_SERVICE);
 472		Intent intent = new Intent(context, EventReceiver.class);
 473		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 474		Log.d(Config.LOGTAG, "good bye");
 475		stopSelf();
 476	}
 477
 478	protected void scheduleWakeupCall(int seconds, boolean ping) {
 479		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 480		Context context = getApplicationContext();
 481		AlarmManager alarmManager = (AlarmManager) context
 482				.getSystemService(Context.ALARM_SERVICE);
 483
 484		if (ping) {
 485			if (this.pingIntent == null) {
 486				this.pingIntent = new Intent(context, EventReceiver.class);
 487				this.pingIntent.setAction("ping");
 488				this.pingIntent.putExtra("time", timeToWake);
 489				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 490						this.pingIntent, 0);
 491				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 492						timeToWake, pendingPingIntent);
 493			} else {
 494				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 495				if (scheduledTime < SystemClock.elapsedRealtime()
 496						|| (scheduledTime > timeToWake)) {
 497					this.pingIntent.putExtra("time", timeToWake);
 498					alarmManager.cancel(this.pendingPingIntent);
 499					this.pendingPingIntent = PendingIntent.getBroadcast(
 500							context, 0, this.pingIntent, 0);
 501					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 502							timeToWake, pendingPingIntent);
 503				}
 504			}
 505		} else {
 506			Intent intent = new Intent(context, EventReceiver.class);
 507			intent.setAction("ping_check");
 508			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 509					intent, 0);
 510			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 511					alarmIntent);
 512		}
 513
 514	}
 515
 516	public XmppConnection createConnection(Account account) {
 517		SharedPreferences sharedPref = getPreferences();
 518		account.setResource(sharedPref.getString("resource", "mobile")
 519				.toLowerCase(Locale.getDefault()));
 520		XmppConnection connection = new XmppConnection(account, this);
 521		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 522		connection.setOnStatusChangedListener(this.statusListener);
 523		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 524		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 525		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 526		connection.setOnBindListener(this.mOnBindListener);
 527		connection
 528				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 529		return connection;
 530	}
 531
 532	public void sendMessage(Message message) {
 533		Account account = message.getConversation().getAccount();
 534		account.deactivateGracePeriod();
 535		Conversation conv = message.getConversation();
 536		MessagePacket packet = null;
 537		boolean saveInDb = true;
 538		boolean send = false;
 539		if (account.getStatus() == Account.STATUS_ONLINE
 540				&& account.getXmppConnection() != null) {
 541			if (message.getType() == Message.TYPE_IMAGE) {
 542				if (message.getPresence() != null) {
 543					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 544						if (!conv.hasValidOtrSession()
 545								&& (message.getPresence() != null)) {
 546							conv.startOtrSession(this, message.getPresence(),
 547									true);
 548							message.setStatus(Message.STATUS_WAITING);
 549						} else if (conv.hasValidOtrSession()
 550								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 551							mJingleConnectionManager
 552									.createNewConnection(message);
 553						} else if (message.getPresence() == null) {
 554							message.setStatus(Message.STATUS_WAITING);
 555						}
 556					} else {
 557						mJingleConnectionManager.createNewConnection(message);
 558					}
 559				} else {
 560					message.setStatus(Message.STATUS_WAITING);
 561				}
 562			} else {
 563				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 564					if (!conv.hasValidOtrSession()
 565							&& (message.getPresence() != null)) {
 566						conv.startOtrSession(this, message.getPresence(), true);
 567						message.setStatus(Message.STATUS_WAITING);
 568					} else if (conv.hasValidOtrSession()
 569							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 570						message.setPresence(conv.getOtrSession().getSessionID()
 571								.getUserID());
 572						packet = mMessageGenerator.generateOtrChat(message);
 573						send = true;
 574
 575					} else if (message.getPresence() == null) {
 576						message.setStatus(Message.STATUS_WAITING);
 577					}
 578				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 579					message.getConversation().endOtrIfNeeded();
 580					failWaitingOtrMessages(message.getConversation());
 581					packet = mMessageGenerator.generatePgpChat(message);
 582					send = true;
 583				} else {
 584					message.getConversation().endOtrIfNeeded();
 585					failWaitingOtrMessages(message.getConversation());
 586					packet = mMessageGenerator.generateChat(message);
 587					send = true;
 588				}
 589			}
 590			if (!account.getXmppConnection().getFeatures().sm()
 591					&& conv.getMode() != Conversation.MODE_MULTI) {
 592				message.setStatus(Message.STATUS_SEND);
 593			}
 594		} else {
 595			message.setStatus(Message.STATUS_WAITING);
 596			if (message.getType() == Message.TYPE_TEXT) {
 597				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 598					String pgpBody = message.getEncryptedBody();
 599					String decryptedBody = message.getBody();
 600					message.setBody(pgpBody);
 601					message.setEncryption(Message.ENCRYPTION_PGP);
 602					databaseBackend.createMessage(message);
 603					saveInDb = false;
 604					message.setBody(decryptedBody);
 605					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 606				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 607					if (conv.hasValidOtrSession()) {
 608						message.setPresence(conv.getOtrSession().getSessionID()
 609								.getUserID());
 610					} else if (!conv.hasValidOtrSession()
 611							&& message.getPresence() != null) {
 612						conv.startOtrSession(this, message.getPresence(), false);
 613					}
 614				}
 615			}
 616
 617		}
 618		conv.add(message);
 619		if (saveInDb) {
 620			if (message.getEncryption() == Message.ENCRYPTION_NONE
 621					|| saveEncryptedMessages()) {
 622				databaseBackend.createMessage(message);
 623			}
 624		}
 625		if ((send) && (packet != null)) {
 626			sendMessagePacket(account, packet);
 627		}
 628		updateConversationUi();
 629	}
 630
 631	private void sendUnsendMessages(Conversation conversation) {
 632		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 633			int status = conversation.getMessages().get(i).getStatus();
 634			if (status == Message.STATUS_WAITING) {
 635				resendMessage(conversation.getMessages().get(i));
 636			}
 637		}
 638	}
 639
 640	private void resendMessage(Message message) {
 641		Account account = message.getConversation().getAccount();
 642		MessagePacket packet = null;
 643		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 644			Presences presences = message.getConversation().getContact()
 645					.getPresences();
 646			if (!message.getConversation().hasValidOtrSession()) {
 647				if ((message.getPresence() != null)
 648						&& (presences.has(message.getPresence()))) {
 649					message.getConversation().startOtrSession(this,
 650							message.getPresence(), true);
 651				} else {
 652					if (presences.size() == 1) {
 653						String presence = presences.asStringArray()[0];
 654						message.getConversation().startOtrSession(this,
 655								presence, true);
 656					}
 657				}
 658			} else {
 659				if (message.getConversation().getOtrSession()
 660						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 661					if (message.getType() == Message.TYPE_TEXT) {
 662						packet = mMessageGenerator.generateOtrChat(message,
 663								true);
 664					} else if (message.getType() == Message.TYPE_IMAGE) {
 665						mJingleConnectionManager.createNewConnection(message);
 666					}
 667				}
 668			}
 669		} else if (message.getType() == Message.TYPE_TEXT) {
 670			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 671				packet = mMessageGenerator.generateChat(message, true);
 672			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 673					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 674				packet = mMessageGenerator.generatePgpChat(message, true);
 675			}
 676		} else if (message.getType() == Message.TYPE_IMAGE) {
 677			Presences presences = message.getConversation().getContact()
 678					.getPresences();
 679			if ((message.getPresence() != null)
 680					&& (presences.has(message.getPresence()))) {
 681				markMessage(message, Message.STATUS_OFFERED);
 682				mJingleConnectionManager.createNewConnection(message);
 683			} else {
 684				if (presences.size() == 1) {
 685					String presence = presences.asStringArray()[0];
 686					message.setPresence(presence);
 687					markMessage(message, Message.STATUS_OFFERED);
 688					mJingleConnectionManager.createNewConnection(message);
 689				}
 690			}
 691		}
 692		if (packet != null) {
 693			if (!account.getXmppConnection().getFeatures().sm()
 694					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 695				markMessage(message, Message.STATUS_SEND);
 696			} else {
 697				markMessage(message, Message.STATUS_UNSEND);
 698			}
 699			sendMessagePacket(account, packet);
 700		}
 701	}
 702
 703	public void fetchRosterFromServer(Account account) {
 704		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 705		if (!"".equals(account.getRosterVersion())) {
 706			Log.d(Config.LOGTAG, account.getJid()
 707					+ ": fetching roster version " + account.getRosterVersion());
 708		} else {
 709			Log.d(Config.LOGTAG, account.getJid() + ": fetching roster");
 710		}
 711		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 712				account.getRosterVersion());
 713		account.getXmppConnection().sendIqPacket(iqPacket,
 714				new OnIqPacketReceived() {
 715
 716					@Override
 717					public void onIqPacketReceived(final Account account,
 718							IqPacket packet) {
 719						Element query = packet.findChild("query");
 720						if (query != null) {
 721							account.getRoster().markAllAsNotInRoster();
 722							mIqParser.rosterItems(account, query);
 723						}
 724					}
 725				});
 726	}
 727
 728	public void fetchBookmarks(Account account) {
 729		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 730		Element query = iqPacket.query("jabber:iq:private");
 731		query.addChild("storage", "storage:bookmarks");
 732		OnIqPacketReceived callback = new OnIqPacketReceived() {
 733
 734			@Override
 735			public void onIqPacketReceived(Account account, IqPacket packet) {
 736				Element query = packet.query();
 737				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 738				Element storage = query.findChild("storage",
 739						"storage:bookmarks");
 740				if (storage != null) {
 741					for (Element item : storage.getChildren()) {
 742						if (item.getName().equals("conference")) {
 743							Bookmark bookmark = Bookmark.parse(item, account);
 744							bookmarks.add(bookmark);
 745							Conversation conversation = find(bookmark);
 746							if (conversation != null) {
 747								conversation.setBookmark(bookmark);
 748							} else {
 749								if (bookmark.autojoin()) {
 750									conversation = findOrCreateConversation(
 751											account, bookmark.getJid(), true);
 752									conversation.setBookmark(bookmark);
 753									joinMuc(conversation);
 754								}
 755							}
 756						}
 757					}
 758				}
 759				account.setBookmarks(bookmarks);
 760			}
 761		};
 762		sendIqPacket(account, iqPacket, callback);
 763
 764	}
 765
 766	public void pushBookmarks(Account account) {
 767		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 768		Element query = iqPacket.query("jabber:iq:private");
 769		Element storage = query.addChild("storage", "storage:bookmarks");
 770		for (Bookmark bookmark : account.getBookmarks()) {
 771			storage.addChild(bookmark);
 772		}
 773		sendIqPacket(account, iqPacket, null);
 774	}
 775
 776	private void mergePhoneContactsWithRoster() {
 777		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 778				new OnPhoneContactsLoadedListener() {
 779					@Override
 780					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 781						for (Account account : accounts) {
 782							account.getRoster().clearSystemAccounts();
 783						}
 784						for (Bundle phoneContact : phoneContacts) {
 785							for (Account account : accounts) {
 786								String jid = phoneContact.getString("jid");
 787								Contact contact = account.getRoster()
 788										.getContact(jid);
 789								String systemAccount = phoneContact
 790										.getInt("phoneid")
 791										+ "#"
 792										+ phoneContact.getString("lookup");
 793								contact.setSystemAccount(systemAccount);
 794								contact.setPhotoUri(phoneContact
 795										.getString("photouri"));
 796								contact.setSystemName(phoneContact
 797										.getString("displayname"));
 798							}
 799						}
 800					}
 801				});
 802	}
 803
 804	public List<Conversation> getConversations() {
 805		if (this.conversations == null) {
 806			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 807			for (Account account : this.accounts) {
 808				accountLookupTable.put(account.getUuid(), account);
 809			}
 810			this.conversations = databaseBackend
 811					.getConversations(Conversation.STATUS_AVAILABLE);
 812			for (Conversation conv : this.conversations) {
 813				Account account = accountLookupTable.get(conv.getAccountUuid());
 814				conv.setAccount(account);
 815				conv.setMessages(databaseBackend.getMessages(conv, 50));
 816				checkDeletedFiles(conv);
 817			}
 818		}
 819		return this.conversations;
 820	}
 821	
 822	private void checkDeletedFiles(Conversation conversation) {
 823		for(Message message : conversation.getMessages()) {
 824			if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP) {
 825				if (!getFileBackend().isFileAvailable(message)) {
 826					message.setDownloadable(new DeletedDownloadable());
 827				}
 828			}
 829		}
 830	}
 831	
 832	private void markFileDeleted(String uuid) {
 833		for(Conversation conversation : getConversations()) {
 834			for(Message message : conversation.getMessages()) {
 835				if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getUuid().equals(uuid)) {
 836					if (!getFileBackend().isFileAvailable(message)) {
 837						message.setDownloadable(new DeletedDownloadable());
 838						updateConversationUi();
 839					}
 840					return;
 841				}
 842			}
 843		}
 844	}
 845
 846	public void populateWithOrderedConversations(List<Conversation> list) {
 847		populateWithOrderedConversations(list, true);
 848	}
 849
 850	public void populateWithOrderedConversations(List<Conversation> list,
 851			boolean includeConferences) {
 852		list.clear();
 853		if (includeConferences) {
 854			list.addAll(getConversations());
 855		} else {
 856			for (Conversation conversation : getConversations()) {
 857				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 858					list.add(conversation);
 859				}
 860			}
 861		}
 862		Collections.sort(list, new Comparator<Conversation>() {
 863			@Override
 864			public int compare(Conversation lhs, Conversation rhs) {
 865				Message left = lhs.getLatestMessage();
 866				Message right = rhs.getLatestMessage();
 867				if (left.getTimeSent() > right.getTimeSent()) {
 868					return -1;
 869				} else if (left.getTimeSent() < right.getTimeSent()) {
 870					return 1;
 871				} else {
 872					return 0;
 873				}
 874			}
 875		});
 876	}
 877
 878	public int loadMoreMessages(Conversation conversation, long timestamp) {
 879		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 880				timestamp);
 881		for (Message message : messages) {
 882			message.setConversation(conversation);
 883		}
 884		conversation.addAll(0, messages);
 885		return messages.size();
 886	}
 887
 888	public List<Account> getAccounts() {
 889		return this.accounts;
 890	}
 891
 892	public Conversation find(List<Conversation> haystack, Contact contact) {
 893		for (Conversation conversation : haystack) {
 894			if (conversation.getContact() == contact) {
 895				return conversation;
 896			}
 897		}
 898		return null;
 899	}
 900
 901	public Conversation find(List<Conversation> haystack, Account account,
 902			String jid) {
 903		for (Conversation conversation : haystack) {
 904			if ((account == null || conversation.getAccount().equals(account))
 905					&& (conversation.getContactJid().split("/", 2)[0]
 906							.equals(jid))) {
 907				return conversation;
 908			}
 909		}
 910		return null;
 911	}
 912
 913	public Conversation findOrCreateConversation(Account account, String jid,
 914			boolean muc) {
 915		Conversation conversation = find(account, jid);
 916		if (conversation != null) {
 917			return conversation;
 918		}
 919		conversation = databaseBackend.findConversation(account, jid);
 920		if (conversation != null) {
 921			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 922			conversation.setAccount(account);
 923			if (muc) {
 924				conversation.setMode(Conversation.MODE_MULTI);
 925			} else {
 926				conversation.setMode(Conversation.MODE_SINGLE);
 927			}
 928			conversation.setMessages(databaseBackend.getMessages(conversation,
 929					50));
 930			this.databaseBackend.updateConversation(conversation);
 931		} else {
 932			String conversationName;
 933			Contact contact = account.getRoster().getContact(jid);
 934			if (contact != null) {
 935				conversationName = contact.getDisplayName();
 936			} else {
 937				conversationName = jid.split("@")[0];
 938			}
 939			if (muc) {
 940				conversation = new Conversation(conversationName, account, jid,
 941						Conversation.MODE_MULTI);
 942			} else {
 943				conversation = new Conversation(conversationName, account, jid,
 944						Conversation.MODE_SINGLE);
 945			}
 946			this.databaseBackend.createConversation(conversation);
 947		}
 948		this.conversations.add(conversation);
 949		updateConversationUi();
 950		return conversation;
 951	}
 952
 953	public void archiveConversation(Conversation conversation) {
 954		if (conversation.getMode() == Conversation.MODE_MULTI) {
 955			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
 956				Bookmark bookmark = conversation.getBookmark();
 957				if (bookmark != null && bookmark.autojoin()) {
 958					bookmark.setAutojoin(false);
 959					pushBookmarks(bookmark.getAccount());
 960				}
 961			}
 962			leaveMuc(conversation);
 963		} else {
 964			conversation.endOtrIfNeeded();
 965		}
 966		this.databaseBackend.updateConversation(conversation);
 967		this.conversations.remove(conversation);
 968		updateConversationUi();
 969	}
 970
 971	public void clearConversationHistory(Conversation conversation) {
 972		this.databaseBackend.deleteMessagesInConversation(conversation);
 973		this.fileBackend.removeFiles(conversation);
 974		conversation.getMessages().clear();
 975		updateConversationUi();
 976	}
 977
 978	public int getConversationCount() {
 979		return this.databaseBackend.getConversationCount();
 980	}
 981
 982	public void createAccount(Account account) {
 983		databaseBackend.createAccount(account);
 984		this.accounts.add(account);
 985		this.reconnectAccount(account, false);
 986		updateAccountUi();
 987	}
 988
 989	public void updateAccount(Account account) {
 990		this.statusListener.onStatusChanged(account);
 991		databaseBackend.updateAccount(account);
 992		reconnectAccount(account, false);
 993		updateAccountUi();
 994		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 995	}
 996
 997	public void deleteAccount(Account account) {
 998		for (Conversation conversation : conversations) {
 999			if (conversation.getAccount() == account) {
1000				if (conversation.getMode() == Conversation.MODE_MULTI) {
1001					leaveMuc(conversation);
1002				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1003					conversation.endOtrIfNeeded();
1004				}
1005				conversations.remove(conversation);
1006			}
1007		}
1008		if (account.getXmppConnection() != null) {
1009			this.disconnect(account, true);
1010		}
1011		databaseBackend.deleteAccount(account);
1012		this.accounts.remove(account);
1013		updateAccountUi();
1014		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1015	}
1016
1017	public void setOnConversationListChangedListener(
1018			OnConversationUpdate listener) {
1019		if (!isScreenOn()) {
1020			Log.d(Config.LOGTAG,
1021					"ignoring setOnConversationListChangedListener");
1022			return;
1023		}
1024		synchronized (this.convChangedListenerCount) {
1025			if (checkListeners()) {
1026				switchToForeground();
1027			}
1028			this.mOnConversationUpdate = listener;
1029			this.mNotificationService.setIsInForeground(true);
1030			this.convChangedListenerCount++;
1031		}
1032	}
1033
1034	public void removeOnConversationListChangedListener() {
1035		synchronized (this.convChangedListenerCount) {
1036			this.convChangedListenerCount--;
1037			if (this.convChangedListenerCount <= 0) {
1038				this.convChangedListenerCount = 0;
1039				this.mOnConversationUpdate = null;
1040				this.mNotificationService.setIsInForeground(false);
1041				if (checkListeners()) {
1042					switchToBackground();
1043				}
1044			}
1045		}
1046	}
1047
1048	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1049		if (!isScreenOn()) {
1050			Log.d(Config.LOGTAG, "ignoring setOnAccountListChangedListener");
1051			return;
1052		}
1053		synchronized (this.accountChangedListenerCount) {
1054			if (checkListeners()) {
1055				switchToForeground();
1056			}
1057			this.mOnAccountUpdate = listener;
1058			this.accountChangedListenerCount++;
1059		}
1060	}
1061
1062	public void removeOnAccountListChangedListener() {
1063		synchronized (this.accountChangedListenerCount) {
1064			this.accountChangedListenerCount--;
1065			if (this.accountChangedListenerCount <= 0) {
1066				this.mOnAccountUpdate = null;
1067				this.accountChangedListenerCount = 0;
1068				if (checkListeners()) {
1069					switchToBackground();
1070				}
1071			}
1072		}
1073	}
1074
1075	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1076		if (!isScreenOn()) {
1077			Log.d(Config.LOGTAG, "ignoring setOnRosterUpdateListener");
1078			return;
1079		}
1080		synchronized (this.rosterChangedListenerCount) {
1081			if (checkListeners()) {
1082				switchToForeground();
1083			}
1084			this.mOnRosterUpdate = listener;
1085			this.rosterChangedListenerCount++;
1086		}
1087	}
1088
1089	public void removeOnRosterUpdateListener() {
1090		synchronized (this.rosterChangedListenerCount) {
1091			this.rosterChangedListenerCount--;
1092			if (this.rosterChangedListenerCount <= 0) {
1093				this.rosterChangedListenerCount = 0;
1094				this.mOnRosterUpdate = null;
1095				if (checkListeners()) {
1096					switchToBackground();
1097				}
1098			}
1099		}
1100	}
1101
1102	private boolean checkListeners() {
1103		return (this.mOnAccountUpdate == null
1104				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1105	}
1106
1107	private void switchToForeground() {
1108		for (Account account : getAccounts()) {
1109			if (account.getStatus() == Account.STATUS_ONLINE) {
1110				XmppConnection connection = account.getXmppConnection();
1111				if (connection != null && connection.getFeatures().csi()) {
1112					connection.sendActive();
1113				}
1114			}
1115		}
1116		Log.d(Config.LOGTAG,"app switched into foreground");
1117	}
1118
1119	private void switchToBackground() {
1120		for (Account account : getAccounts()) {
1121			if (account.getStatus() == Account.STATUS_ONLINE) {
1122				XmppConnection connection = account.getXmppConnection();
1123				if (connection != null && connection.getFeatures().csi()) {
1124					connection.sendInactive();
1125				}
1126			}
1127		}
1128		this.mNotificationService.setIsInForeground(false);
1129		Log.d(Config.LOGTAG,"app switched into background");
1130	}
1131
1132	private boolean isScreenOn() {
1133		PowerManager pm = (PowerManager) this
1134				.getSystemService(Context.POWER_SERVICE);
1135		return pm.isScreenOn();
1136	}
1137
1138	public void connectMultiModeConversations(Account account) {
1139		List<Conversation> conversations = getConversations();
1140		for (int i = 0; i < conversations.size(); i++) {
1141			Conversation conversation = conversations.get(i);
1142			if ((conversation.getMode() == Conversation.MODE_MULTI)
1143					&& (conversation.getAccount() == account)) {
1144				joinMuc(conversation);
1145			}
1146		}
1147	}
1148
1149	public void joinMuc(Conversation conversation) {
1150		Account account = conversation.getAccount();
1151		account.pendingConferenceJoins.remove(conversation);
1152		account.pendingConferenceLeaves.remove(conversation);
1153		if (account.getStatus() == Account.STATUS_ONLINE) {
1154			Log.d(Config.LOGTAG,
1155					"joining conversation " + conversation.getContactJid());
1156			String nick = conversation.getMucOptions().getProposedNick();
1157			conversation.getMucOptions().setJoinNick(nick);
1158			PresencePacket packet = new PresencePacket();
1159			String joinJid = conversation.getMucOptions().getJoinJid();
1160			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1161			Element x = new Element("x");
1162			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1163			if (conversation.getMucOptions().getPassword() != null) {
1164				Element password = x.addChild("password");
1165				password.setContent(conversation.getMucOptions().getPassword());
1166			}
1167			String sig = account.getPgpSignature();
1168			if (sig != null) {
1169				packet.addChild("status").setContent("online");
1170				packet.addChild("x", "jabber:x:signed").setContent(sig);
1171			}
1172			if (conversation.getMessages().size() != 0) {
1173				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1174						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1175				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1176				Date date = new Date(conversation.getLatestMessage()
1177						.getTimeSent() + 1000);
1178				x.addChild("history").setAttribute("since",
1179						mDateFormat.format(date));
1180			}
1181			packet.addChild(x);
1182			sendPresencePacket(account, packet);
1183			if (!joinJid.equals(conversation.getContactJid())) {
1184				conversation.setContactJid(joinJid);
1185				databaseBackend.updateConversation(conversation);
1186			}
1187		} else {
1188			account.pendingConferenceJoins.add(conversation);
1189		}
1190	}
1191
1192	private OnRenameListener renameListener = null;
1193	private IqGenerator mIqGenerator = new IqGenerator(this);
1194
1195	public void setOnRenameListener(OnRenameListener listener) {
1196		this.renameListener = listener;
1197	}
1198
1199	public void providePasswordForMuc(Conversation conversation, String password) {
1200		if (conversation.getMode() == Conversation.MODE_MULTI) {
1201			conversation.getMucOptions().setPassword(password);
1202			if (conversation.getBookmark() != null) {
1203				conversation.getBookmark().setAutojoin(true);
1204				pushBookmarks(conversation.getAccount());
1205			}
1206			databaseBackend.updateConversation(conversation);
1207			joinMuc(conversation);
1208		}
1209	}
1210
1211	public void renameInMuc(final Conversation conversation, final String nick) {
1212		final MucOptions options = conversation.getMucOptions();
1213		options.setJoinNick(nick);
1214		if (options.online()) {
1215			Account account = conversation.getAccount();
1216			options.setOnRenameListener(new OnRenameListener() {
1217
1218				@Override
1219				public void onRename(boolean success) {
1220					if (renameListener != null) {
1221						renameListener.onRename(success);
1222					}
1223					if (success) {
1224						conversation.setContactJid(conversation.getMucOptions()
1225								.getJoinJid());
1226						databaseBackend.updateConversation(conversation);
1227						Bookmark bookmark = conversation.getBookmark();
1228						if (bookmark != null) {
1229							bookmark.setNick(nick);
1230							pushBookmarks(bookmark.getAccount());
1231						}
1232					}
1233				}
1234			});
1235			options.flagAboutToRename();
1236			PresencePacket packet = new PresencePacket();
1237			packet.setAttribute("to", options.getJoinJid());
1238			packet.setAttribute("from", conversation.getAccount().getFullJid());
1239
1240			String sig = account.getPgpSignature();
1241			if (sig != null) {
1242				packet.addChild("status").setContent("online");
1243				packet.addChild("x", "jabber:x:signed").setContent(sig);
1244			}
1245			sendPresencePacket(account, packet);
1246		} else {
1247			conversation.setContactJid(options.getJoinJid());
1248			databaseBackend.updateConversation(conversation);
1249			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1250				Bookmark bookmark = conversation.getBookmark();
1251				if (bookmark != null) {
1252					bookmark.setNick(nick);
1253					pushBookmarks(bookmark.getAccount());
1254				}
1255				joinMuc(conversation);
1256			}
1257		}
1258	}
1259
1260	public void leaveMuc(Conversation conversation) {
1261		Account account = conversation.getAccount();
1262		account.pendingConferenceJoins.remove(conversation);
1263		account.pendingConferenceLeaves.remove(conversation);
1264		if (account.getStatus() == Account.STATUS_ONLINE) {
1265			PresencePacket packet = new PresencePacket();
1266			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1267			packet.setAttribute("from", conversation.getAccount().getFullJid());
1268			packet.setAttribute("type", "unavailable");
1269			sendPresencePacket(conversation.getAccount(), packet);
1270			conversation.getMucOptions().setOffline();
1271			conversation.deregisterWithBookmark();
1272			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1273					+ ": leaving muc " + conversation.getContactJid());
1274		} else {
1275			account.pendingConferenceLeaves.add(conversation);
1276		}
1277	}
1278
1279	public void disconnect(Account account, boolean force) {
1280		if ((account.getStatus() == Account.STATUS_ONLINE)
1281				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1282			if (!force) {
1283				List<Conversation> conversations = getConversations();
1284				for (int i = 0; i < conversations.size(); i++) {
1285					Conversation conversation = conversations.get(i);
1286					if (conversation.getAccount() == account) {
1287						if (conversation.getMode() == Conversation.MODE_MULTI) {
1288							leaveMuc(conversation);
1289						} else {
1290							if (conversation.endOtrIfNeeded()) {
1291								Log.d(Config.LOGTAG,account.getJid()+": ended otr session with "+conversation.getContactJid());
1292							}
1293						}
1294					}
1295				}
1296			}
1297			account.getXmppConnection().disconnect(force);
1298		}
1299	}
1300
1301	@Override
1302	public IBinder onBind(Intent intent) {
1303		return mBinder;
1304	}
1305
1306	public void updateMessage(Message message) {
1307		databaseBackend.updateMessage(message);
1308		updateConversationUi();
1309	}
1310
1311	protected void syncDirtyContacts(Account account) {
1312		for (Contact contact : account.getRoster().getContacts()) {
1313			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1314				pushContactToServer(contact);
1315			}
1316			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1317				deleteContactOnServer(contact);
1318			}
1319		}
1320	}
1321
1322	public void createContact(Contact contact) {
1323		SharedPreferences sharedPref = getPreferences();
1324		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1325		if (autoGrant) {
1326			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1327			contact.setOption(Contact.Options.ASKING);
1328		}
1329		pushContactToServer(contact);
1330	}
1331
1332	public void onOtrSessionEstablished(Conversation conversation) {
1333		Account account = conversation.getAccount();
1334		List<Message> messages = conversation.getMessages();
1335		Session otrSession = conversation.getOtrSession();
1336		Log.d(Config.LOGTAG,
1337				account.getJid() + " otr session established with "
1338						+ conversation.getContactJid() + "/"
1339						+ otrSession.getSessionID().getUserID());
1340		for (int i = 0; i < messages.size(); ++i) {
1341			Message msg = messages.get(i);
1342			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1343					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1344				msg.setPresence(otrSession.getSessionID().getUserID());
1345				if (msg.getType() == Message.TYPE_TEXT) {
1346					MessagePacket outPacket = mMessageGenerator
1347							.generateOtrChat(msg, true);
1348					if (outPacket != null) {
1349						msg.setStatus(Message.STATUS_SEND);
1350						databaseBackend.updateMessage(msg);
1351						sendMessagePacket(account, outPacket);
1352					}
1353				} else if (msg.getType() == Message.TYPE_IMAGE) {
1354					mJingleConnectionManager.createNewConnection(msg);
1355				}
1356			}
1357		}
1358		updateConversationUi();
1359	}
1360
1361	public boolean renewSymmetricKey(Conversation conversation) {
1362		Account account = conversation.getAccount();
1363		byte[] symmetricKey = new byte[32];
1364		this.mRandom.nextBytes(symmetricKey);
1365		Session otrSession = conversation.getOtrSession();
1366		if (otrSession != null) {
1367			MessagePacket packet = new MessagePacket();
1368			packet.setType(MessagePacket.TYPE_CHAT);
1369			packet.setFrom(account.getFullJid());
1370			packet.addChild("private", "urn:xmpp:carbons:2");
1371			packet.addChild("no-copy", "urn:xmpp:hints");
1372			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1373					+ otrSession.getSessionID().getUserID());
1374			try {
1375				packet.setBody(otrSession
1376						.transformSending(CryptoHelper.FILETRANSFER
1377								+ CryptoHelper.bytesToHex(symmetricKey)));
1378				sendMessagePacket(account, packet);
1379				conversation.setSymmetricKey(symmetricKey);
1380				return true;
1381			} catch (OtrException e) {
1382				return false;
1383			}
1384		}
1385		return false;
1386	}
1387
1388	public void pushContactToServer(Contact contact) {
1389		contact.resetOption(Contact.Options.DIRTY_DELETE);
1390		contact.setOption(Contact.Options.DIRTY_PUSH);
1391		Account account = contact.getAccount();
1392		if (account.getStatus() == Account.STATUS_ONLINE) {
1393			boolean ask = contact.getOption(Contact.Options.ASKING);
1394			boolean sendUpdates = contact
1395					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1396					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1397			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1398			iq.query("jabber:iq:roster").addChild(contact.asElement());
1399			account.getXmppConnection().sendIqPacket(iq, null);
1400			if (sendUpdates) {
1401				sendPresencePacket(account,
1402						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1403			}
1404			if (ask) {
1405				sendPresencePacket(account,
1406						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1407			}
1408		}
1409	}
1410
1411	public void publishAvatar(Account account, Uri image,
1412			final UiCallback<Avatar> callback) {
1413		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1414		final int size = Config.AVATAR_SIZE;
1415		final Avatar avatar = getFileBackend()
1416				.getPepAvatar(image, size, format);
1417		if (avatar != null) {
1418			avatar.height = size;
1419			avatar.width = size;
1420			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1421				avatar.type = "image/webp";
1422			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1423				avatar.type = "image/jpeg";
1424			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1425				avatar.type = "image/png";
1426			}
1427			if (!getFileBackend().save(avatar)) {
1428				callback.error(R.string.error_saving_avatar, avatar);
1429				return;
1430			}
1431			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1432			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1433
1434				@Override
1435				public void onIqPacketReceived(Account account, IqPacket result) {
1436					if (result.getType() == IqPacket.TYPE_RESULT) {
1437						IqPacket packet = XmppConnectionService.this.mIqGenerator
1438								.publishAvatarMetadata(avatar);
1439						sendIqPacket(account, packet, new OnIqPacketReceived() {
1440
1441							@Override
1442							public void onIqPacketReceived(Account account,
1443									IqPacket result) {
1444								if (result.getType() == IqPacket.TYPE_RESULT) {
1445									if (account.setAvatar(avatar.getFilename())) {
1446										databaseBackend.updateAccount(account);
1447									}
1448									callback.success(avatar);
1449								} else {
1450									callback.error(
1451											R.string.error_publish_avatar_server_reject,
1452											avatar);
1453								}
1454							}
1455						});
1456					} else {
1457						callback.error(
1458								R.string.error_publish_avatar_server_reject,
1459								avatar);
1460					}
1461				}
1462			});
1463		} else {
1464			callback.error(R.string.error_publish_avatar_converting, null);
1465		}
1466	}
1467
1468	public void fetchAvatar(Account account, Avatar avatar) {
1469		fetchAvatar(account, avatar, null);
1470	}
1471
1472	public void fetchAvatar(Account account, final Avatar avatar,
1473			final UiCallback<Avatar> callback) {
1474		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1475		sendIqPacket(account, packet, new OnIqPacketReceived() {
1476
1477			@Override
1478			public void onIqPacketReceived(Account account, IqPacket result) {
1479				final String ERROR = account.getJid()
1480						+ ": fetching avatar for " + avatar.owner + " failed ";
1481				if (result.getType() == IqPacket.TYPE_RESULT) {
1482					avatar.image = mIqParser.avatarData(result);
1483					if (avatar.image != null) {
1484						if (getFileBackend().save(avatar)) {
1485							if (account.getJid().equals(avatar.owner)) {
1486								if (account.setAvatar(avatar.getFilename())) {
1487									databaseBackend.updateAccount(account);
1488								}
1489							} else {
1490								Contact contact = account.getRoster()
1491										.getContact(avatar.owner);
1492								contact.setAvatar(avatar.getFilename());
1493							}
1494							if (callback != null) {
1495								callback.success(avatar);
1496							}
1497							Log.d(Config.LOGTAG, account.getJid()
1498									+ ": succesfully fetched avatar for "
1499									+ avatar.owner);
1500							return;
1501						}
1502					} else {
1503
1504						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1505					}
1506				} else {
1507					Element error = result.findChild("error");
1508					if (error == null) {
1509						Log.d(Config.LOGTAG, ERROR + "(server error)");
1510					} else {
1511						Log.d(Config.LOGTAG, ERROR + error.toString());
1512					}
1513				}
1514				if (callback != null) {
1515					callback.error(0, null);
1516				}
1517
1518			}
1519		});
1520	}
1521
1522	public void checkForAvatar(Account account,
1523			final UiCallback<Avatar> callback) {
1524		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1525		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1526
1527			@Override
1528			public void onIqPacketReceived(Account account, IqPacket packet) {
1529				if (packet.getType() == IqPacket.TYPE_RESULT) {
1530					Element pubsub = packet.findChild("pubsub",
1531							"http://jabber.org/protocol/pubsub");
1532					if (pubsub != null) {
1533						Element items = pubsub.findChild("items");
1534						if (items != null) {
1535							Avatar avatar = Avatar.parseMetadata(items);
1536							if (avatar != null) {
1537								avatar.owner = account.getJid();
1538								if (fileBackend.isAvatarCached(avatar)) {
1539									if (account.setAvatar(avatar.getFilename())) {
1540										databaseBackend.updateAccount(account);
1541									}
1542									callback.success(avatar);
1543								} else {
1544									fetchAvatar(account, avatar, callback);
1545								}
1546								return;
1547							}
1548						}
1549					}
1550				}
1551				callback.error(0, null);
1552			}
1553		});
1554	}
1555
1556	public void deleteContactOnServer(Contact contact) {
1557		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1558		contact.resetOption(Contact.Options.DIRTY_PUSH);
1559		contact.setOption(Contact.Options.DIRTY_DELETE);
1560		Account account = contact.getAccount();
1561		if (account.getStatus() == Account.STATUS_ONLINE) {
1562			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1563			Element item = iq.query("jabber:iq:roster").addChild("item");
1564			item.setAttribute("jid", contact.getJid());
1565			item.setAttribute("subscription", "remove");
1566			account.getXmppConnection().sendIqPacket(iq, null);
1567		}
1568	}
1569
1570	public void updateConversation(Conversation conversation) {
1571		this.databaseBackend.updateConversation(conversation);
1572	}
1573
1574	public void reconnectAccount(final Account account, final boolean force) {
1575		new Thread(new Runnable() {
1576
1577			@Override
1578			public void run() {
1579				if (account.getXmppConnection() != null) {
1580					disconnect(account, force);
1581				}
1582				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1583					if (account.getXmppConnection() == null) {
1584						account.setXmppConnection(createConnection(account));
1585					}
1586					Thread thread = new Thread(account.getXmppConnection());
1587					thread.start();
1588					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1589							false);
1590				} else {
1591					account.getRoster().clearPresences();
1592					account.setXmppConnection(null);
1593				}
1594			}
1595		}).start();
1596	}
1597
1598	public void invite(Conversation conversation, String contact) {
1599		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1600		sendMessagePacket(conversation.getAccount(), packet);
1601	}
1602
1603	public void resetSendingToWaiting(Account account) {
1604		for (Conversation conversation : getConversations()) {
1605			if (conversation.getAccount() == account) {
1606				for (Message message : conversation.getMessages()) {
1607					if (message.getType() != Message.TYPE_IMAGE
1608							&& message.getStatus() == Message.STATUS_UNSEND) {
1609						markMessage(message, Message.STATUS_WAITING);
1610					}
1611				}
1612			}
1613		}
1614	}
1615
1616	public boolean markMessage(Account account, String recipient, String uuid,
1617			int status) {
1618		if (uuid == null) {
1619			return false;
1620		} else {
1621			for (Conversation conversation : getConversations()) {
1622				if (conversation.getContactJid().equals(recipient)
1623						&& conversation.getAccount().equals(account)) {
1624					return markMessage(conversation, uuid, status);
1625				}
1626			}
1627			return false;
1628		}
1629	}
1630
1631	public boolean markMessage(Conversation conversation, String uuid,
1632			int status) {
1633		if (uuid == null) {
1634			return false;
1635		} else {
1636			for (Message message : conversation.getMessages()) {
1637				if (uuid.equals(message.getUuid())
1638						|| (message.getStatus() >= Message.STATUS_SEND && uuid
1639								.equals(message.getRemoteMsgId()))) {
1640					markMessage(message, status);
1641					return true;
1642				}
1643			}
1644			return false;
1645		}
1646	}
1647
1648	public void markMessage(Message message, int status) {
1649		if (status == Message.STATUS_SEND_FAILED
1650				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1651						.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1652			return;
1653		}
1654		message.setStatus(status);
1655		databaseBackend.updateMessage(message);
1656		updateConversationUi();
1657	}
1658
1659	public SharedPreferences getPreferences() {
1660		return PreferenceManager
1661				.getDefaultSharedPreferences(getApplicationContext());
1662	}
1663
1664	public boolean forceEncryption() {
1665		return getPreferences().getBoolean("force_encryption", false);
1666	}
1667
1668	public boolean confirmMessages() {
1669		return getPreferences().getBoolean("confirm_messages", true);
1670	}
1671
1672	public boolean saveEncryptedMessages() {
1673		return !getPreferences().getBoolean("dont_save_encrypted", false);
1674	}
1675
1676	public boolean indicateReceived() {
1677		return getPreferences().getBoolean("indicate_received", false);
1678	}
1679
1680	public void updateConversationUi() {
1681		if (mOnConversationUpdate != null) {
1682			mOnConversationUpdate.onConversationUpdate();
1683		}
1684	}
1685
1686	public void updateAccountUi() {
1687		if (mOnAccountUpdate != null) {
1688			mOnAccountUpdate.onAccountUpdate();
1689		}
1690	}
1691
1692	public void updateRosterUi() {
1693		if (mOnRosterUpdate != null) {
1694			mOnRosterUpdate.onRosterUpdate();
1695		}
1696	}
1697
1698	public Account findAccountByJid(String accountJid) {
1699		for (Account account : this.accounts) {
1700			if (account.getJid().equals(accountJid)) {
1701				return account;
1702			}
1703		}
1704		return null;
1705	}
1706
1707	public Conversation findConversationByUuid(String uuid) {
1708		for (Conversation conversation : getConversations()) {
1709			if (conversation.getUuid().equals(uuid)) {
1710				return conversation;
1711			}
1712		}
1713		return null;
1714	}
1715
1716	public void markRead(Conversation conversation, boolean calledByUi) {
1717		mNotificationService.clear(conversation);
1718		String id = conversation.getLatestMarkableMessageId();
1719		conversation.markRead();
1720		if (confirmMessages() && id != null && calledByUi) {
1721			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1722					+ ": sending read marker for " + conversation.getName());
1723			Account account = conversation.getAccount();
1724			String to = conversation.getContactJid();
1725			this.sendMessagePacket(conversation.getAccount(),
1726					mMessageGenerator.confirm(account, to, id));
1727		}
1728		if (!calledByUi) {
1729			updateConversationUi();
1730		}
1731	}
1732
1733	public void failWaitingOtrMessages(Conversation conversation) {
1734		for (Message message : conversation.getMessages()) {
1735			if (message.getEncryption() == Message.ENCRYPTION_OTR
1736					&& message.getStatus() == Message.STATUS_WAITING) {
1737				markMessage(message, Message.STATUS_SEND_FAILED);
1738			}
1739		}
1740	}
1741
1742	public SecureRandom getRNG() {
1743		return this.mRandom;
1744	}
1745
1746	public MemorizingTrustManager getMemorizingTrustManager() {
1747		return this.mMemorizingTrustManager;
1748	}
1749
1750	public PowerManager getPowerManager() {
1751		return this.pm;
1752	}
1753
1754	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1755		if (account.getStatus() == Account.STATUS_ONLINE) {
1756			MessagePacket error = this.mMessageGenerator
1757					.generateNotAcceptable(packet);
1758			sendMessagePacket(account, error);
1759		}
1760	}
1761
1762	public void syncRosterToDisk(final Account account) {
1763		new Thread(new Runnable() {
1764
1765			@Override
1766			public void run() {
1767				databaseBackend.writeRoster(account.getRoster());
1768			}
1769		}).start();
1770
1771	}
1772
1773	public List<String> getKnownHosts() {
1774		List<String> hosts = new ArrayList<String>();
1775		for (Account account : getAccounts()) {
1776			if (!hosts.contains(account.getServer())) {
1777				hosts.add(account.getServer());
1778			}
1779			for (Contact contact : account.getRoster().getContacts()) {
1780				if (contact.showInRoster()) {
1781					String server = contact.getServer();
1782					if (server != null && !hosts.contains(server)) {
1783						hosts.add(server);
1784					}
1785				}
1786			}
1787		}
1788		return hosts;
1789	}
1790
1791	public List<String> getKnownConferenceHosts() {
1792		ArrayList<String> mucServers = new ArrayList<String>();
1793		for (Account account : accounts) {
1794			if (account.getXmppConnection() != null) {
1795				String server = account.getXmppConnection().getMucServer();
1796				if (server != null && !mucServers.contains(server)) {
1797					mucServers.add(server);
1798				}
1799			}
1800		}
1801		return mucServers;
1802	}
1803
1804	public void sendMessagePacket(Account account, MessagePacket packet) {
1805		XmppConnection connection = account.getXmppConnection();
1806		if (connection != null) {
1807			connection.sendMessagePacket(packet);
1808		}
1809	}
1810
1811	public void sendPresencePacket(Account account, PresencePacket packet) {
1812		XmppConnection connection = account.getXmppConnection();
1813		if (connection != null) {
1814			connection.sendPresencePacket(packet);
1815		}
1816	}
1817
1818	public void sendIqPacket(Account account, IqPacket packet,
1819			OnIqPacketReceived callback) {
1820		XmppConnection connection = account.getXmppConnection();
1821		if (connection != null) {
1822			connection.sendIqPacket(packet, callback);
1823		}
1824	}
1825
1826	public MessageGenerator getMessageGenerator() {
1827		return this.mMessageGenerator;
1828	}
1829
1830	public PresenceGenerator getPresenceGenerator() {
1831		return this.mPresenceGenerator;
1832	}
1833
1834	public IqGenerator getIqGenerator() {
1835		return this.mIqGenerator;
1836	}
1837
1838	public JingleConnectionManager getJingleConnectionManager() {
1839		return this.mJingleConnectionManager;
1840	}
1841
1842	public interface OnConversationUpdate {
1843		public void onConversationUpdate();
1844	}
1845
1846	public interface OnAccountUpdate {
1847		public void onAccountUpdate();
1848	}
1849
1850	public interface OnRosterUpdate {
1851		public void onRosterUpdate();
1852	}
1853
1854	public List<Contact> findContacts(String jid) {
1855		ArrayList<Contact> contacts = new ArrayList<Contact>();
1856		for (Account account : getAccounts()) {
1857			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1858				Contact contact = account.getRoster().getContactFromRoster(jid);
1859				if (contact != null) {
1860					contacts.add(contact);
1861				}
1862			}
1863		}
1864		return contacts;
1865	}
1866
1867	public NotificationService getNotificationService() {
1868		return this.mNotificationService;
1869	}
1870
1871	public HttpConnectionManager getHttpConnectionManager() {
1872		return this.mHttpConnectionManager;
1873	}
1874	
1875	private class DeletedDownloadable implements Downloadable {
1876
1877		@Override
1878		public boolean start() {
1879			return false;
1880		}
1881
1882		@Override
1883		public int getStatus() {
1884			return Downloadable.STATUS_DELETED;
1885		}
1886
1887		@Override
1888		public long getFileSize() {
1889			return 0;
1890		}
1891		
1892	}
1893}