XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.security.SecureRandom;
   4import java.text.SimpleDateFormat;
   5import java.util.ArrayList;
   6import java.util.Collections;
   7import java.util.Comparator;
   8import java.util.Date;
   9import java.util.Hashtable;
  10import java.util.List;
  11import java.util.Locale;
  12import java.util.TimeZone;
  13import java.util.concurrent.CopyOnWriteArrayList;
  14
  15import org.openintents.openpgp.util.OpenPgpApi;
  16import org.openintents.openpgp.util.OpenPgpServiceConnection;
  17
  18import de.duenndns.ssl.MemorizingTrustManager;
  19
  20import net.java.otr4j.OtrException;
  21import net.java.otr4j.session.Session;
  22import net.java.otr4j.session.SessionStatus;
  23import eu.siacs.conversations.Config;
  24import eu.siacs.conversations.R;
  25import eu.siacs.conversations.crypto.PgpEngine;
  26import eu.siacs.conversations.entities.Account;
  27import eu.siacs.conversations.entities.Bookmark;
  28import eu.siacs.conversations.entities.Contact;
  29import eu.siacs.conversations.entities.Conversation;
  30import eu.siacs.conversations.entities.Message;
  31import eu.siacs.conversations.entities.MucOptions;
  32import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  33import eu.siacs.conversations.entities.Presences;
  34import eu.siacs.conversations.generator.IqGenerator;
  35import eu.siacs.conversations.generator.MessageGenerator;
  36import eu.siacs.conversations.generator.PresenceGenerator;
  37import eu.siacs.conversations.parser.IqParser;
  38import eu.siacs.conversations.parser.MessageParser;
  39import eu.siacs.conversations.parser.PresenceParser;
  40import eu.siacs.conversations.persistance.DatabaseBackend;
  41import eu.siacs.conversations.persistance.FileBackend;
  42import eu.siacs.conversations.ui.UiCallback;
  43import eu.siacs.conversations.utils.CryptoHelper;
  44import eu.siacs.conversations.utils.ExceptionHelper;
  45import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  46import eu.siacs.conversations.utils.PRNGFixes;
  47import eu.siacs.conversations.utils.PhoneHelper;
  48import eu.siacs.conversations.utils.UIHelper;
  49import eu.siacs.conversations.xml.Element;
  50import eu.siacs.conversations.xmpp.OnBindListener;
  51import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  52import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  53import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  54import eu.siacs.conversations.xmpp.OnStatusChanged;
  55import eu.siacs.conversations.xmpp.XmppConnection;
  56import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  57import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  58import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  59import eu.siacs.conversations.xmpp.pep.Avatar;
  60import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  61import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  62import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  63import android.annotation.SuppressLint;
  64import android.app.AlarmManager;
  65import android.app.PendingIntent;
  66import android.app.Service;
  67import android.content.Context;
  68import android.content.Intent;
  69import android.content.SharedPreferences;
  70import android.database.ContentObserver;
  71import android.graphics.Bitmap;
  72import android.net.ConnectivityManager;
  73import android.net.NetworkInfo;
  74import android.net.Uri;
  75import android.os.Binder;
  76import android.os.Bundle;
  77import android.os.IBinder;
  78import android.os.PowerManager;
  79import android.os.PowerManager.WakeLock;
  80import android.os.SystemClock;
  81import android.preference.PreferenceManager;
  82import android.provider.ContactsContract;
  83import android.util.Log;
  84
  85public class XmppConnectionService extends Service {
  86
  87	public DatabaseBackend databaseBackend;
  88	private FileBackend fileBackend;
  89
  90	public long startDate;
  91
  92	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  93
  94	private MemorizingTrustManager mMemorizingTrustManager;
  95
  96	private MessageParser mMessageParser = new MessageParser(this);
  97	private PresenceParser mPresenceParser = new PresenceParser(this);
  98	private IqParser mIqParser = new IqParser(this);
  99	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 100	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 101
 102	private List<Account> accounts;
 103	private CopyOnWriteArrayList<Conversation> conversations = null;
 104	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 105			this);
 106
 107	private OnConversationUpdate mOnConversationUpdate = null;
 108	private int convChangedListenerCount = 0;
 109	private OnAccountUpdate mOnAccountUpdate = null;
 110	private int accountChangedListenerCount = 0;
 111	private OnRosterUpdate mOnRosterUpdate = null;
 112	private int rosterChangedListenerCount = 0;
 113	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 114
 115		@Override
 116		public void onContactStatusChanged(Contact contact, boolean online) {
 117			Conversation conversation = find(getConversations(), contact);
 118			if (conversation != null) {
 119				conversation.endOtrIfNeeded();
 120				if (online && (contact.getPresences().size() == 1)) {
 121					sendUnsendMessages(conversation);
 122				}
 123			}
 124		}
 125	};
 126
 127	private SecureRandom mRandom;
 128
 129	private ContentObserver contactObserver = new ContentObserver(null) {
 130		@Override
 131		public void onChange(boolean selfChange) {
 132			super.onChange(selfChange);
 133			Intent intent = new Intent(getApplicationContext(),
 134					XmppConnectionService.class);
 135			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 136			startService(intent);
 137		}
 138	};
 139
 140	private final IBinder mBinder = new XmppConnectionBinder();
 141	private OnStatusChanged statusListener = new OnStatusChanged() {
 142
 143		@Override
 144		public void onStatusChanged(Account account) {
 145			XmppConnection connection = account.getXmppConnection();
 146			if (mOnAccountUpdate != null) {
 147				mOnAccountUpdate.onAccountUpdate();
 148				;
 149			}
 150			if (account.getStatus() == Account.STATUS_ONLINE) {
 151				for (Conversation conversation : account.pendingConferenceLeaves) {
 152					leaveMuc(conversation);
 153				}
 154				for (Conversation conversation : account.pendingConferenceJoins) {
 155					joinMuc(conversation);
 156				}
 157				mJingleConnectionManager.cancelInTransmission();
 158				List<Conversation> conversations = getConversations();
 159				for (int i = 0; i < conversations.size(); ++i) {
 160					if (conversations.get(i).getAccount() == account) {
 161						conversations.get(i).startOtrIfNeeded();
 162						sendUnsendMessages(conversations.get(i));
 163					}
 164				}
 165				if (connection != null && connection.getFeatures().csi()) {
 166					if (checkListeners()) {
 167						Log.d(Config.LOGTAG, account.getJid()
 168								+ " sending csi//inactive");
 169						connection.sendInactive();
 170					} else {
 171						Log.d(Config.LOGTAG, account.getJid()
 172								+ " sending csi//active");
 173						connection.sendActive();
 174					}
 175				}
 176				syncDirtyContacts(account);
 177				scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 178			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 179				resetSendingToWaiting(account);
 180				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 181					int timeToReconnect = mRandom.nextInt(50) + 10;
 182					scheduleWakeupCall(timeToReconnect, false);
 183				}
 184			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 185				databaseBackend.updateAccount(account);
 186				reconnectAccount(account, true);
 187			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 188					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 189				if (connection != null) {
 190					int next = connection.getTimeToNextAttempt();
 191					Log.d(Config.LOGTAG, account.getJid()
 192							+ ": error connecting account. try again in "
 193							+ next + "s for the "
 194							+ (connection.getAttempt() + 1) + " time");
 195					scheduleWakeupCall((int) (next * 1.2), false);
 196				}
 197			}
 198			UIHelper.showErrorNotification(getApplicationContext(),
 199					getAccounts());
 200		}
 201	};
 202
 203	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 204
 205		@Override
 206		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 207			mJingleConnectionManager.deliverPacket(account, packet);
 208		}
 209	};
 210
 211	private OpenPgpServiceConnection pgpServiceConnection;
 212	private PgpEngine mPgpEngine = null;
 213	private Intent pingIntent;
 214	private PendingIntent pendingPingIntent = null;
 215	private WakeLock wakeLock;
 216	private PowerManager pm;
 217	private OnBindListener mOnBindListener = new OnBindListener() {
 218
 219		@Override
 220		public void onBind(final Account account) {
 221			account.getRoster().clearPresences();
 222			account.clearPresences(); // self presences
 223			account.pendingConferenceJoins.clear();
 224			account.pendingConferenceLeaves.clear();
 225			fetchRosterFromServer(account);
 226			fetchBookmarks(account);
 227			sendPresencePacket(account,
 228					mPresenceGenerator.sendPresence(account));
 229			connectMultiModeConversations(account);
 230			updateConversationUi();
 231		}
 232	};
 233
 234	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 235
 236		@Override
 237		public void onMessageAcknowledged(Account account, String uuid) {
 238			for (Conversation conversation : getConversations()) {
 239				if (conversation.getAccount() == account) {
 240					for (Message message : conversation.getMessages()) {
 241						if ((message.getStatus() == Message.STATUS_UNSEND || message
 242								.getStatus() == Message.STATUS_WAITING)
 243								&& message.getUuid().equals(uuid)) {
 244							markMessage(message, Message.STATUS_SEND);
 245							return;
 246						}
 247					}
 248				}
 249			}
 250		}
 251	};
 252
 253	public PgpEngine getPgpEngine() {
 254		if (pgpServiceConnection.isBound()) {
 255			if (this.mPgpEngine == null) {
 256				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 257						getApplicationContext(),
 258						pgpServiceConnection.getService()), this);
 259			}
 260			return mPgpEngine;
 261		} else {
 262			return null;
 263		}
 264
 265	}
 266
 267	public FileBackend getFileBackend() {
 268		return this.fileBackend;
 269	}
 270
 271	public Message attachImageToConversation(final Conversation conversation,
 272			final Uri uri, final UiCallback<Message> callback) {
 273		final Message message;
 274		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 275			message = new Message(conversation, "",
 276					Message.ENCRYPTION_DECRYPTED);
 277		} else {
 278			message = new Message(conversation, "",
 279					conversation.getNextEncryption(forceEncryption()));
 280		}
 281		message.setPresence(conversation.getNextPresence());
 282		message.setType(Message.TYPE_IMAGE);
 283		message.setStatus(Message.STATUS_OFFERED);
 284		new Thread(new Runnable() {
 285
 286			@Override
 287			public void run() {
 288				try {
 289					getFileBackend().copyImageToPrivateStorage(message, uri);
 290					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 291						getPgpEngine().encrypt(message, callback);
 292					} else {
 293						callback.success(message);
 294					}
 295				} catch (FileBackend.ImageCopyException e) {
 296					callback.error(e.getResId(), message);
 297				}
 298			}
 299		}).start();
 300		return message;
 301	}
 302
 303	public Conversation find(Bookmark bookmark) {
 304		return find(bookmark.getAccount(), bookmark.getJid());
 305	}
 306
 307	public Conversation find(Account account, String jid) {
 308		return find(getConversations(), account, jid);
 309	}
 310
 311	public class XmppConnectionBinder extends Binder {
 312		public XmppConnectionService getService() {
 313			return XmppConnectionService.this;
 314		}
 315	}
 316
 317	@Override
 318	public int onStartCommand(Intent intent, int flags, int startId) {
 319		if ((intent != null)
 320				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 321			mergePhoneContactsWithRoster();
 322			return START_STICKY;
 323		} else if ((intent != null)
 324				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 325			logoutAndSave();
 326			return START_NOT_STICKY;
 327		}
 328		this.wakeLock.acquire();
 329		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 330				.getSystemService(Context.CONNECTIVITY_SERVICE);
 331		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 332		boolean isConnected = activeNetwork != null
 333				&& activeNetwork.isConnected();
 334
 335		for (Account account : accounts) {
 336			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 337				if (!isConnected) {
 338					account.setStatus(Account.STATUS_NO_INTERNET);
 339					if (statusListener != null) {
 340						statusListener.onStatusChanged(account);
 341					}
 342				} else {
 343					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 344						account.setStatus(Account.STATUS_OFFLINE);
 345						if (statusListener != null) {
 346							statusListener.onStatusChanged(account);
 347						}
 348					}
 349					if (account.getStatus() == Account.STATUS_ONLINE) {
 350						long lastReceived = account.getXmppConnection()
 351								.getLastPacketReceived();
 352						long lastSent = account.getXmppConnection()
 353								.getLastPingSent();
 354						if (lastSent - lastReceived >= Config.PING_TIMEOUT * 1000) {
 355							Log.d(Config.LOGTAG, account.getJid()
 356									+ ": ping timeout");
 357							this.reconnectAccount(account, true);
 358						} else if (SystemClock.elapsedRealtime() - lastReceived >= Config.PING_MIN_INTERVAL * 1000) {
 359							account.getXmppConnection().sendPing();
 360							this.scheduleWakeupCall(2, false);
 361						}
 362					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 363						if (account.getXmppConnection() == null) {
 364							account.setXmppConnection(this
 365									.createConnection(account));
 366						}
 367						new Thread(account.getXmppConnection()).start();
 368					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 369							&& ((SystemClock.elapsedRealtime() - account
 370									.getXmppConnection().getLastConnect()) / 1000 >= Config.CONNECT_TIMEOUT)) {
 371						Log.d(Config.LOGTAG, account.getJid()
 372								+ ": time out during connect reconnecting");
 373						reconnectAccount(account, true);
 374					} else {
 375						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 376							reconnectAccount(account, true);
 377						}
 378					}
 379					// in any case. reschedule wakup call
 380					this.scheduleWakeupCall(Config.PING_MAX_INTERVAL, true);
 381				}
 382				if (mOnAccountUpdate != null) {
 383					mOnAccountUpdate.onAccountUpdate();
 384				}
 385			}
 386		}
 387		if (wakeLock.isHeld()) {
 388			try {
 389				wakeLock.release();
 390			} catch (RuntimeException re) {
 391			}
 392		}
 393		return START_STICKY;
 394	}
 395
 396	@SuppressLint("TrulyRandom")
 397	@Override
 398	public void onCreate() {
 399		ExceptionHelper.init(getApplicationContext());
 400		PRNGFixes.apply();
 401		this.mRandom = new SecureRandom();
 402		this.mMemorizingTrustManager = new MemorizingTrustManager(
 403				getApplicationContext());
 404		this.databaseBackend = DatabaseBackend
 405				.getInstance(getApplicationContext());
 406		this.fileBackend = new FileBackend(getApplicationContext());
 407		this.accounts = databaseBackend.getAccounts();
 408
 409		for (Account account : this.accounts) {
 410			this.databaseBackend.readRoster(account.getRoster());
 411		}
 412		this.mergePhoneContactsWithRoster();
 413		this.getConversations();
 414
 415		getContentResolver().registerContentObserver(
 416				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 417		this.pgpServiceConnection = new OpenPgpServiceConnection(
 418				getApplicationContext(), "org.sufficientlysecure.keychain");
 419		this.pgpServiceConnection.bindToService();
 420
 421		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 422		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 423				"XmppConnectionService");
 424	}
 425
 426	@Override
 427	public void onDestroy() {
 428		super.onDestroy();
 429		this.logoutAndSave();
 430	}
 431
 432	@Override
 433	public void onTaskRemoved(Intent rootIntent) {
 434		super.onTaskRemoved(rootIntent);
 435		this.logoutAndSave();
 436	}
 437
 438	private void logoutAndSave() {
 439		for (Account account : accounts) {
 440			databaseBackend.writeRoster(account.getRoster());
 441			if (account.getXmppConnection() != null) {
 442				disconnect(account, false);
 443			}
 444		}
 445		Context context = getApplicationContext();
 446		AlarmManager alarmManager = (AlarmManager) context
 447				.getSystemService(Context.ALARM_SERVICE);
 448		Intent intent = new Intent(context, EventReceiver.class);
 449		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 450		Log.d(Config.LOGTAG, "good bye");
 451		stopSelf();
 452	}
 453
 454	protected void scheduleWakeupCall(int seconds, boolean ping) {
 455		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 456		Context context = getApplicationContext();
 457		AlarmManager alarmManager = (AlarmManager) context
 458				.getSystemService(Context.ALARM_SERVICE);
 459
 460		if (ping) {
 461			if (this.pingIntent == null) {
 462				this.pingIntent = new Intent(context, EventReceiver.class);
 463				this.pingIntent.setAction("ping");
 464				this.pingIntent.putExtra("time", timeToWake);
 465				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 466						this.pingIntent, 0);
 467				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 468						timeToWake, pendingPingIntent);
 469			} else {
 470				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 471				if (scheduledTime < SystemClock.elapsedRealtime()
 472						|| (scheduledTime > timeToWake)) {
 473					this.pingIntent.putExtra("time", timeToWake);
 474					alarmManager.cancel(this.pendingPingIntent);
 475					this.pendingPingIntent = PendingIntent.getBroadcast(
 476							context, 0, this.pingIntent, 0);
 477					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 478							timeToWake, pendingPingIntent);
 479				}
 480			}
 481		} else {
 482			Intent intent = new Intent(context, EventReceiver.class);
 483			intent.setAction("ping_check");
 484			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 485					intent, 0);
 486			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 487					alarmIntent);
 488		}
 489
 490	}
 491
 492	public XmppConnection createConnection(Account account) {
 493		SharedPreferences sharedPref = getPreferences();
 494		account.setResource(sharedPref.getString("resource", "mobile")
 495				.toLowerCase(Locale.getDefault()));
 496		XmppConnection connection = new XmppConnection(account, this);
 497		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 498		connection.setOnStatusChangedListener(this.statusListener);
 499		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 500		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 501		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 502		connection.setOnBindListener(this.mOnBindListener);
 503		connection
 504				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 505		return connection;
 506	}
 507
 508	synchronized public void sendMessage(Message message) {
 509		Account account = message.getConversation().getAccount();
 510		Conversation conv = message.getConversation();
 511		MessagePacket packet = null;
 512		boolean saveInDb = true;
 513		boolean send = false;
 514		if (account.getStatus() == Account.STATUS_ONLINE) {
 515			if (message.getType() == Message.TYPE_IMAGE) {
 516				if (message.getPresence() != null) {
 517					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 518						if (!conv.hasValidOtrSession()
 519								&& (message.getPresence() != null)) {
 520							conv.startOtrSession(this, message.getPresence(),
 521									true);
 522							message.setStatus(Message.STATUS_WAITING);
 523						} else if (conv.hasValidOtrSession()
 524								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 525							mJingleConnectionManager
 526									.createNewConnection(message);
 527						} else if (message.getPresence() == null) {
 528							message.setStatus(Message.STATUS_WAITING);
 529						}
 530					} else {
 531						mJingleConnectionManager.createNewConnection(message);
 532					}
 533				} else {
 534					message.setStatus(Message.STATUS_WAITING);
 535				}
 536			} else {
 537				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 538					if (!conv.hasValidOtrSession()
 539							&& (message.getPresence() != null)) {
 540						conv.startOtrSession(this, message.getPresence(), true);
 541						message.setStatus(Message.STATUS_WAITING);
 542					} else if (conv.hasValidOtrSession()
 543							&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 544						message.setPresence(conv.getOtrSession().getSessionID()
 545								.getUserID());
 546						packet = mMessageGenerator.generateOtrChat(message);
 547						send = true;
 548
 549					} else if (message.getPresence() == null) {
 550						message.setStatus(Message.STATUS_WAITING);
 551					}
 552				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 553					message.getConversation().endOtrIfNeeded();
 554					failWaitingOtrMessages(message.getConversation());
 555					packet = mMessageGenerator.generatePgpChat(message);
 556					send = true;
 557				} else {
 558					message.getConversation().endOtrIfNeeded();
 559					failWaitingOtrMessages(message.getConversation());
 560					packet = mMessageGenerator.generateChat(message);
 561					send = true;
 562				}
 563			}
 564		} else {
 565			message.setStatus(Message.STATUS_WAITING);
 566			if (message.getType() == Message.TYPE_TEXT) {
 567				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 568					String pgpBody = message.getEncryptedBody();
 569					String decryptedBody = message.getBody();
 570					message.setBody(pgpBody);
 571					message.setEncryption(Message.ENCRYPTION_PGP);
 572					databaseBackend.createMessage(message);
 573					saveInDb = false;
 574					message.setBody(decryptedBody);
 575					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 576				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 577					if (conv.hasValidOtrSession()) {
 578						message.setPresence(conv.getOtrSession().getSessionID()
 579								.getUserID());
 580					} else if (!conv.hasValidOtrSession()
 581							&& message.getPresence() != null) {
 582						conv.startOtrSession(this, message.getPresence(), false);
 583					}
 584				}
 585			}
 586
 587		}
 588		conv.getMessages().add(message);
 589		if (!account.getXmppConnection().getFeatures().sm()
 590				&& conv.getMode() != Conversation.MODE_MULTI) {
 591			message.setStatus(Message.STATUS_SEND);
 592		}
 593		if (saveInDb) {
 594			if (message.getEncryption() == Message.ENCRYPTION_NONE
 595					|| saveEncryptedMessages()) {
 596				databaseBackend.createMessage(message);
 597			}
 598		}
 599		if ((send) && (packet != null)) {
 600			sendMessagePacket(account, packet);
 601		}
 602		updateConversationUi();
 603	}
 604
 605	private void sendUnsendMessages(Conversation conversation) {
 606		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 607			int status = conversation.getMessages().get(i).getStatus();
 608			if (status == Message.STATUS_WAITING) {
 609				resendMessage(conversation.getMessages().get(i));
 610			}
 611		}
 612	}
 613
 614	private void resendMessage(Message message) {
 615		Account account = message.getConversation().getAccount();
 616		MessagePacket packet = null;
 617		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 618			Presences presences = message.getConversation().getContact()
 619					.getPresences();
 620			if (!message.getConversation().hasValidOtrSession()) {
 621				if ((message.getPresence() != null)
 622						&& (presences.has(message.getPresence()))) {
 623					message.getConversation().startOtrSession(this,
 624							message.getPresence(), true);
 625				} else {
 626					if (presences.size() == 1) {
 627						String presence = presences.asStringArray()[0];
 628						message.getConversation().startOtrSession(this,
 629								presence, true);
 630					}
 631				}
 632			} else {
 633				if (message.getConversation().getOtrSession()
 634						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 635					if (message.getType() == Message.TYPE_TEXT) {
 636						packet = mMessageGenerator.generateOtrChat(message,
 637								true);
 638					} else if (message.getType() == Message.TYPE_IMAGE) {
 639						mJingleConnectionManager.createNewConnection(message);
 640					}
 641				}
 642			}
 643		} else if (message.getType() == Message.TYPE_TEXT) {
 644			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 645				packet = mMessageGenerator.generateChat(message, true);
 646			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 647					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 648				packet = mMessageGenerator.generatePgpChat(message, true);
 649			}
 650		} else if (message.getType() == Message.TYPE_IMAGE) {
 651			Presences presences = message.getConversation().getContact()
 652					.getPresences();
 653			if ((message.getPresence() != null)
 654					&& (presences.has(message.getPresence()))) {
 655				markMessage(message, Message.STATUS_OFFERED);
 656				mJingleConnectionManager.createNewConnection(message);
 657			} else {
 658				if (presences.size() == 1) {
 659					String presence = presences.asStringArray()[0];
 660					message.setPresence(presence);
 661					markMessage(message, Message.STATUS_OFFERED);
 662					mJingleConnectionManager.createNewConnection(message);
 663				}
 664			}
 665		}
 666		if (packet != null) {
 667			if (!account.getXmppConnection().getFeatures().sm()
 668					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 669				markMessage(message, Message.STATUS_SEND);
 670			} else {
 671				markMessage(message, Message.STATUS_UNSEND);
 672			}
 673			sendMessagePacket(account, packet);
 674		}
 675	}
 676
 677	public void fetchRosterFromServer(Account account) {
 678		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 679		if (!"".equals(account.getRosterVersion())) {
 680			Log.d(Config.LOGTAG, account.getJid()
 681					+ ": fetching roster version " + account.getRosterVersion());
 682		} else {
 683			Log.d(Config.LOGTAG, account.getJid() + ": fetching roster");
 684		}
 685		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 686				account.getRosterVersion());
 687		account.getXmppConnection().sendIqPacket(iqPacket,
 688				new OnIqPacketReceived() {
 689
 690					@Override
 691					public void onIqPacketReceived(final Account account,
 692							IqPacket packet) {
 693						Element query = packet.findChild("query");
 694						if (query != null) {
 695							account.getRoster().markAllAsNotInRoster();
 696							mIqParser.rosterItems(account, query);
 697						}
 698					}
 699				});
 700	}
 701
 702	public void fetchBookmarks(Account account) {
 703		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 704		Element query = iqPacket.query("jabber:iq:private");
 705		query.addChild("storage", "storage:bookmarks");
 706		OnIqPacketReceived callback = new OnIqPacketReceived() {
 707
 708			@Override
 709			public void onIqPacketReceived(Account account, IqPacket packet) {
 710				Element query = packet.query();
 711				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
 712				Element storage = query.findChild("storage",
 713						"storage:bookmarks");
 714				if (storage != null) {
 715					for (Element item : storage.getChildren()) {
 716						if (item.getName().equals("conference")) {
 717							Bookmark bookmark = Bookmark.parse(item, account);
 718							bookmarks.add(bookmark);
 719							Conversation conversation = find(bookmark);
 720							if (conversation != null) {
 721								conversation.setBookmark(bookmark);
 722							} else {
 723								if (bookmark.autojoin()) {
 724									conversation = findOrCreateConversation(
 725											account, bookmark.getJid(), true);
 726									conversation.setBookmark(bookmark);
 727									joinMuc(conversation);
 728								}
 729							}
 730						}
 731					}
 732				}
 733				account.setBookmarks(bookmarks);
 734			}
 735		};
 736		sendIqPacket(account, iqPacket, callback);
 737
 738	}
 739
 740	public void pushBookmarks(Account account) {
 741		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_SET);
 742		Element query = iqPacket.query("jabber:iq:private");
 743		Element storage = query.addChild("storage", "storage:bookmarks");
 744		for (Bookmark bookmark : account.getBookmarks()) {
 745			storage.addChild(bookmark.toElement());
 746		}
 747		sendIqPacket(account, iqPacket, null);
 748	}
 749
 750	private void mergePhoneContactsWithRoster() {
 751		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 752				new OnPhoneContactsLoadedListener() {
 753					@Override
 754					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 755						for (Account account : accounts) {
 756							account.getRoster().clearSystemAccounts();
 757						}
 758						for (Bundle phoneContact : phoneContacts) {
 759							for (Account account : accounts) {
 760								String jid = phoneContact.getString("jid");
 761								Contact contact = account.getRoster()
 762										.getContact(jid);
 763								String systemAccount = phoneContact
 764										.getInt("phoneid")
 765										+ "#"
 766										+ phoneContact.getString("lookup");
 767								contact.setSystemAccount(systemAccount);
 768								contact.setPhotoUri(phoneContact
 769										.getString("photouri"));
 770								contact.setSystemName(phoneContact
 771										.getString("displayname"));
 772							}
 773						}
 774					}
 775				});
 776	}
 777
 778	public List<Conversation> getConversations() {
 779		if (this.conversations == null) {
 780			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 781			for (Account account : this.accounts) {
 782				accountLookupTable.put(account.getUuid(), account);
 783			}
 784			this.conversations = databaseBackend
 785					.getConversations(Conversation.STATUS_AVAILABLE);
 786			for (Conversation conv : this.conversations) {
 787				Account account = accountLookupTable.get(conv.getAccountUuid());
 788				conv.setAccount(account);
 789				conv.setMessages(databaseBackend.getMessages(conv, 50));
 790			}
 791		}
 792
 793		return this.conversations;
 794	}
 795
 796	public void populateWithOrderedConversations(List<Conversation> list) {
 797		populateWithOrderedConversations(list, true);
 798	}
 799
 800	public void populateWithOrderedConversations(List<Conversation> list,
 801			boolean includeConferences) {
 802		list.clear();
 803		if (includeConferences) {
 804			list.addAll(getConversations());
 805		} else {
 806			for (Conversation conversation : getConversations()) {
 807				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 808					list.add(conversation);
 809				}
 810			}
 811		}
 812		Collections.sort(list, new Comparator<Conversation>() {
 813			@Override
 814			public int compare(Conversation lhs, Conversation rhs) {
 815				Message left = lhs.getLatestMessage();
 816				Message right = rhs.getLatestMessage();
 817				if (left.getTimeSent() > right.getTimeSent()) {
 818					return -1;
 819				} else if (left.getTimeSent() < right.getTimeSent()) {
 820					return 1;
 821				} else {
 822					return 0;
 823				}
 824			}
 825		});
 826	}
 827	
 828	public int loadMoreMessages(Conversation conversation, long timestamp) {
 829		List<Message> messages = databaseBackend.getMessages(conversation, 50,
 830				timestamp);
 831		for (Message message : messages) {
 832			message.setConversation(conversation);
 833		}
 834		conversation.getMessages().addAll(0, messages);
 835		return messages.size();
 836	}
 837
 838	public List<Account> getAccounts() {
 839		return this.accounts;
 840	}
 841
 842	public Conversation find(List<Conversation> haystack, Contact contact) {
 843		for (Conversation conversation : haystack) {
 844			if (conversation.getContact() == contact) {
 845				return conversation;
 846			}
 847		}
 848		return null;
 849	}
 850
 851	public Conversation find(List<Conversation> haystack, Account account,
 852			String jid) {
 853		for (Conversation conversation : haystack) {
 854			if ((conversation.getAccount().equals(account))
 855					&& (conversation.getContactJid().split("/",2)[0].equals(jid))) {
 856				return conversation;
 857			}
 858		}
 859		return null;
 860	}
 861
 862	public Conversation findOrCreateConversation(Account account, String jid,
 863			boolean muc) {
 864		Conversation conversation = find(account, jid);
 865		if (conversation != null) {
 866			return conversation;
 867		}
 868		conversation = databaseBackend.findConversation(account, jid);
 869		if (conversation != null) {
 870			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 871			conversation.setAccount(account);
 872			if (muc) {
 873				conversation.setMode(Conversation.MODE_MULTI);
 874			} else {
 875				conversation.setMode(Conversation.MODE_SINGLE);
 876			}
 877			conversation.setMessages(databaseBackend.getMessages(conversation,
 878					50));
 879			this.databaseBackend.updateConversation(conversation);
 880		} else {
 881			String conversationName;
 882			Contact contact = account.getRoster().getContact(jid);
 883			if (contact != null) {
 884				conversationName = contact.getDisplayName();
 885			} else {
 886				conversationName = jid.split("@")[0];
 887			}
 888			if (muc) {
 889				conversation = new Conversation(conversationName, account, jid,
 890						Conversation.MODE_MULTI);
 891			} else {
 892				conversation = new Conversation(conversationName, account, jid,
 893						Conversation.MODE_SINGLE);
 894			}
 895			this.databaseBackend.createConversation(conversation);
 896		}
 897		this.conversations.add(conversation);
 898		updateConversationUi();
 899		return conversation;
 900	}
 901
 902	public void archiveConversation(Conversation conversation) {
 903		if (conversation.getMode() == Conversation.MODE_MULTI) {
 904			Bookmark bookmark = conversation.getBookmark();
 905			if (bookmark != null && bookmark.autojoin()) {
 906				bookmark.setAutojoin(false);
 907				pushBookmarks(bookmark.getAccount());
 908			}
 909			leaveMuc(conversation);
 910		} else {
 911			conversation.endOtrIfNeeded();
 912		}
 913		this.databaseBackend.updateConversation(conversation);
 914		this.conversations.remove(conversation);
 915		updateConversationUi();
 916	}
 917
 918	public void clearConversationHistory(Conversation conversation) {
 919		this.databaseBackend.deleteMessagesInConversation(conversation);
 920		this.fileBackend.removeFiles(conversation);
 921		conversation.getMessages().clear();
 922		updateConversationUi();
 923	}
 924
 925	public int getConversationCount() {
 926		return this.databaseBackend.getConversationCount();
 927	}
 928
 929	public void createAccount(Account account) {
 930		databaseBackend.createAccount(account);
 931		this.accounts.add(account);
 932		this.reconnectAccount(account, false);
 933		updateAccountUi();
 934	}
 935
 936	public void updateAccount(Account account) {
 937		this.statusListener.onStatusChanged(account);
 938		databaseBackend.updateAccount(account);
 939		reconnectAccount(account, false);
 940		updateAccountUi();
 941		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 942	}
 943
 944	public void deleteAccount(Account account) {
 945		for (Conversation conversation : conversations) {
 946			if (conversation.getAccount() == account) {
 947				if (conversation.getMode() == Conversation.MODE_MULTI) {
 948					leaveMuc(conversation);
 949				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
 950					conversation.endOtrIfNeeded();
 951				}
 952				conversations.remove(conversation);
 953			}
 954		}
 955		if (account.getXmppConnection() != null) {
 956			this.disconnect(account, true);
 957		}
 958		databaseBackend.deleteAccount(account);
 959		this.accounts.remove(account);
 960		updateAccountUi();
 961		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
 962	}
 963
 964	public void setOnConversationListChangedListener(
 965			OnConversationUpdate listener) {
 966		if (checkListeners()) {
 967			switchToForeground();
 968		}
 969		this.mOnConversationUpdate = listener;
 970		this.convChangedListenerCount++;
 971	}
 972
 973	public void removeOnConversationListChangedListener() {
 974		this.convChangedListenerCount--;
 975		if (this.convChangedListenerCount == 0) {
 976			this.mOnConversationUpdate = null;
 977			if (checkListeners()) {
 978				switchToBackground();
 979			}
 980		}
 981	}
 982
 983	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
 984		if (checkListeners()) {
 985			switchToForeground();
 986		}
 987		this.mOnAccountUpdate = listener;
 988		this.accountChangedListenerCount++;
 989	}
 990
 991	public void removeOnAccountListChangedListener() {
 992		this.accountChangedListenerCount--;
 993		if (this.accountChangedListenerCount == 0) {
 994			this.mOnAccountUpdate = null;
 995			if (checkListeners()) {
 996				switchToBackground();
 997			}
 998		}
 999	}
1000
1001	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
1002		if (checkListeners()) {
1003			switchToForeground();
1004		}
1005		this.mOnRosterUpdate = listener;
1006		this.rosterChangedListenerCount++;
1007	}
1008
1009	public void removeOnRosterUpdateListener() {
1010		this.rosterChangedListenerCount--;
1011		if (this.rosterChangedListenerCount == 0) {
1012			this.mOnRosterUpdate = null;
1013			if (checkListeners()) {
1014				switchToBackground();
1015			}
1016		}
1017	}
1018
1019	private boolean checkListeners() {
1020		return (this.mOnAccountUpdate == null
1021				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
1022	}
1023
1024	private void switchToForeground() {
1025		for (Account account : getAccounts()) {
1026			if (account.getStatus() == Account.STATUS_ONLINE) {
1027				XmppConnection connection = account.getXmppConnection();
1028				if (connection != null && connection.getFeatures().csi()) {
1029					connection.sendActive();
1030					Log.d(Config.LOGTAG, account.getJid()
1031							+ " sending csi//active");
1032				}
1033			}
1034		}
1035	}
1036
1037	private void switchToBackground() {
1038		for (Account account : getAccounts()) {
1039			if (account.getStatus() == Account.STATUS_ONLINE) {
1040				XmppConnection connection = account.getXmppConnection();
1041				if (connection != null && connection.getFeatures().csi()) {
1042					connection.sendInactive();
1043					Log.d(Config.LOGTAG, account.getJid()
1044							+ " sending csi//inactive");
1045				}
1046			}
1047		}
1048	}
1049
1050	public void connectMultiModeConversations(Account account) {
1051		List<Conversation> conversations = getConversations();
1052		for (int i = 0; i < conversations.size(); i++) {
1053			Conversation conversation = conversations.get(i);
1054			if ((conversation.getMode() == Conversation.MODE_MULTI)
1055					&& (conversation.getAccount() == account)) {
1056				joinMuc(conversation);
1057			}
1058		}
1059	}
1060
1061	public void joinMuc(Conversation conversation) {
1062		Account account = conversation.getAccount();
1063		account.pendingConferenceJoins.remove(conversation);
1064		account.pendingConferenceLeaves.remove(conversation);
1065		if (account.getStatus() == Account.STATUS_ONLINE) {
1066			Log.d(Config.LOGTAG,
1067					"joining conversation " + conversation.getContactJid());
1068			String nick = conversation.getMucOptions().getProposedNick();
1069			conversation.getMucOptions().setJoinNick(nick);
1070			PresencePacket packet = new PresencePacket();
1071			String joinJid = conversation.getMucOptions().getJoinJid();
1072			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1073			Element x = new Element("x");
1074			x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1075			if (conversation.getMucOptions().getPassword() != null) {
1076				Element password = x.addChild("password");
1077				password.setContent(conversation.getMucOptions().getPassword());
1078			}
1079			String sig = account.getPgpSignature();
1080			if (sig != null) {
1081				packet.addChild("status").setContent("online");
1082				packet.addChild("x", "jabber:x:signed").setContent(sig);
1083			}
1084			if (conversation.getMessages().size() != 0) {
1085				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
1086						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
1087				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
1088				Date date = new Date(conversation.getLatestMessage()
1089						.getTimeSent() + 1000);
1090				x.addChild("history").setAttribute("since",
1091						mDateFormat.format(date));
1092			}
1093			packet.addChild(x);
1094			sendPresencePacket(account, packet);
1095			if (!joinJid.equals(conversation.getContactJid())) {
1096				conversation.setContactJid(joinJid);
1097				databaseBackend.updateConversation(conversation);
1098			}
1099		} else {
1100			account.pendingConferenceJoins.add(conversation);
1101		}
1102	}
1103
1104	private OnRenameListener renameListener = null;
1105	private IqGenerator mIqGenerator = new IqGenerator(this);
1106
1107	public void setOnRenameListener(OnRenameListener listener) {
1108		this.renameListener = listener;
1109	}
1110
1111	public void providePasswordForMuc(Conversation conversation, String password) {
1112		if (conversation.getMode() == Conversation.MODE_MULTI) {
1113			conversation.getMucOptions().setPassword(password);
1114			if (conversation.getBookmark() != null
1115					&& conversation.getMucOptions().isPasswordChanged()) {
1116				if (!conversation.getBookmark().autojoin()) {
1117					conversation.getBookmark().setAutojoin(true);
1118				}
1119				pushBookmarks(conversation.getAccount());
1120			}
1121			joinMuc(conversation);
1122		}
1123	}
1124
1125	public void renameInMuc(final Conversation conversation, final String nick) {
1126		final MucOptions options = conversation.getMucOptions();
1127		options.setJoinNick(nick);
1128		if (options.online()) {
1129			Account account = conversation.getAccount();
1130			options.setOnRenameListener(new OnRenameListener() {
1131
1132				@Override
1133				public void onRename(boolean success) {
1134					if (renameListener != null) {
1135						renameListener.onRename(success);
1136					}
1137					if (success) {
1138						conversation.setContactJid(conversation.getMucOptions()
1139								.getJoinJid());
1140						databaseBackend.updateConversation(conversation);
1141						Bookmark bookmark = conversation.getBookmark();
1142						if (bookmark != null) {
1143							bookmark.setNick(nick);
1144							pushBookmarks(bookmark.getAccount());
1145						}
1146					}
1147				}
1148			});
1149			options.flagAboutToRename();
1150			PresencePacket packet = new PresencePacket();
1151			packet.setAttribute("to", options.getJoinJid());
1152			packet.setAttribute("from", conversation.getAccount().getFullJid());
1153
1154			String sig = account.getPgpSignature();
1155			if (sig != null) {
1156				packet.addChild("status").setContent("online");
1157				packet.addChild("x", "jabber:x:signed").setContent(sig);
1158			}
1159			sendPresencePacket(account, packet);
1160		} else {
1161			conversation.setContactJid(options.getJoinJid());
1162			databaseBackend.updateConversation(conversation);
1163			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1164				Bookmark bookmark = conversation.getBookmark();
1165				if (bookmark != null) {
1166					bookmark.setNick(nick);
1167					pushBookmarks(bookmark.getAccount());
1168				}
1169				joinMuc(conversation);
1170			}
1171		}
1172	}
1173
1174	public void leaveMuc(Conversation conversation) {
1175		Account account = conversation.getAccount();
1176		account.pendingConferenceJoins.remove(conversation);
1177		account.pendingConferenceLeaves.remove(conversation);
1178		if (account.getStatus() == Account.STATUS_ONLINE) {
1179			PresencePacket packet = new PresencePacket();
1180			packet.setAttribute("to", conversation.getMucOptions().getJoinJid());
1181			packet.setAttribute("from", conversation.getAccount().getFullJid());
1182			packet.setAttribute("type", "unavailable");
1183			sendPresencePacket(conversation.getAccount(), packet);
1184			conversation.getMucOptions().setOffline();
1185			conversation.deregisterWithBookmark();
1186			Log.d(Config.LOGTAG, conversation.getAccount().getJid()
1187					+ " leaving muc " + conversation.getContactJid());
1188		} else {
1189			account.pendingConferenceLeaves.add(conversation);
1190		}
1191	}
1192
1193	public void disconnect(Account account, boolean force) {
1194		if ((account.getStatus() == Account.STATUS_ONLINE)
1195				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1196			if (!force) {
1197				List<Conversation> conversations = getConversations();
1198				for (int i = 0; i < conversations.size(); i++) {
1199					Conversation conversation = conversations.get(i);
1200					if (conversation.getAccount() == account) {
1201						if (conversation.getMode() == Conversation.MODE_MULTI) {
1202							leaveMuc(conversation);
1203						} else {
1204							conversation.endOtrIfNeeded();
1205						}
1206					}
1207				}
1208			}
1209			account.getXmppConnection().disconnect(force);
1210		}
1211	}
1212
1213	@Override
1214	public IBinder onBind(Intent intent) {
1215		return mBinder;
1216	}
1217
1218	public void updateMessage(Message message) {
1219		databaseBackend.updateMessage(message);
1220	}
1221
1222	protected void syncDirtyContacts(Account account) {
1223		for (Contact contact : account.getRoster().getContacts()) {
1224			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1225				pushContactToServer(contact);
1226			}
1227			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1228				deleteContactOnServer(contact);
1229			}
1230		}
1231	}
1232
1233	public void createContact(Contact contact) {
1234		SharedPreferences sharedPref = getPreferences();
1235		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1236		if (autoGrant) {
1237			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1238			contact.setOption(Contact.Options.ASKING);
1239		}
1240		pushContactToServer(contact);
1241	}
1242
1243	public void onOtrSessionEstablished(Conversation conversation) {
1244		Account account = conversation.getAccount();
1245		List<Message> messages = conversation.getMessages();
1246		Session otrSession = conversation.getOtrSession();
1247		Log.d(Config.LOGTAG,
1248				account.getJid() + " otr session established with "
1249						+ conversation.getContactJid() + "/"
1250						+ otrSession.getSessionID().getUserID());
1251		for (int i = 0; i < messages.size(); ++i) {
1252			Message msg = messages.get(i);
1253			if ((msg.getStatus() == Message.STATUS_UNSEND || msg.getStatus() == Message.STATUS_WAITING)
1254					&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
1255				msg.setPresence(otrSession.getSessionID().getUserID());
1256				if (msg.getType() == Message.TYPE_TEXT) {
1257					MessagePacket outPacket = mMessageGenerator
1258							.generateOtrChat(msg, true);
1259					if (outPacket != null) {
1260						msg.setStatus(Message.STATUS_SEND);
1261						databaseBackend.updateMessage(msg);
1262						sendMessagePacket(account, outPacket);
1263					}
1264				} else if (msg.getType() == Message.TYPE_IMAGE) {
1265					mJingleConnectionManager.createNewConnection(msg);
1266				}
1267			}
1268		}
1269		notifyUi(conversation, false);
1270	}
1271
1272	public boolean renewSymmetricKey(Conversation conversation) {
1273		Account account = conversation.getAccount();
1274		byte[] symmetricKey = new byte[32];
1275		this.mRandom.nextBytes(symmetricKey);
1276		Session otrSession = conversation.getOtrSession();
1277		if (otrSession != null) {
1278			MessagePacket packet = new MessagePacket();
1279			packet.setType(MessagePacket.TYPE_CHAT);
1280			packet.setFrom(account.getFullJid());
1281			packet.addChild("private", "urn:xmpp:carbons:2");
1282			packet.addChild("no-copy", "urn:xmpp:hints");
1283			packet.setTo(otrSession.getSessionID().getAccountID() + "/"
1284					+ otrSession.getSessionID().getUserID());
1285			try {
1286				packet.setBody(otrSession
1287						.transformSending(CryptoHelper.FILETRANSFER
1288								+ CryptoHelper.bytesToHex(symmetricKey)));
1289				sendMessagePacket(account, packet);
1290				conversation.setSymmetricKey(symmetricKey);
1291				return true;
1292			} catch (OtrException e) {
1293				return false;
1294			}
1295		}
1296		return false;
1297	}
1298
1299	public void pushContactToServer(Contact contact) {
1300		contact.resetOption(Contact.Options.DIRTY_DELETE);
1301		contact.setOption(Contact.Options.DIRTY_PUSH);
1302		Account account = contact.getAccount();
1303		if (account.getStatus() == Account.STATUS_ONLINE) {
1304			boolean ask = contact.getOption(Contact.Options.ASKING);
1305			boolean sendUpdates = contact
1306					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1307					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1308			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1309			iq.query("jabber:iq:roster").addChild(contact.asElement());
1310			account.getXmppConnection().sendIqPacket(iq, null);
1311			if (sendUpdates) {
1312				sendPresencePacket(account,
1313						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1314			}
1315			if (ask) {
1316				sendPresencePacket(account,
1317						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1318			}
1319		}
1320	}
1321
1322	public void publishAvatar(Account account, Uri image,
1323			final UiCallback<Avatar> callback) {
1324		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1325		final int size = Config.AVATAR_SIZE;
1326		final Avatar avatar = getFileBackend()
1327				.getPepAvatar(image, size, format);
1328		if (avatar != null) {
1329			avatar.height = size;
1330			avatar.width = size;
1331			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1332				avatar.type = "image/webp";
1333			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1334				avatar.type = "image/jpeg";
1335			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1336				avatar.type = "image/png";
1337			}
1338			if (!getFileBackend().save(avatar)) {
1339				callback.error(R.string.error_saving_avatar, avatar);
1340				return;
1341			}
1342			IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1343			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1344
1345				@Override
1346				public void onIqPacketReceived(Account account, IqPacket result) {
1347					if (result.getType() == IqPacket.TYPE_RESULT) {
1348						IqPacket packet = XmppConnectionService.this.mIqGenerator
1349								.publishAvatarMetadata(avatar);
1350						sendIqPacket(account, packet, new OnIqPacketReceived() {
1351
1352							@Override
1353							public void onIqPacketReceived(Account account,
1354									IqPacket result) {
1355								if (result.getType() == IqPacket.TYPE_RESULT) {
1356									if (account.setAvatar(avatar.getFilename())) {
1357										databaseBackend.updateAccount(account);
1358									}
1359									callback.success(avatar);
1360								} else {
1361									callback.error(
1362											R.string.error_publish_avatar_server_reject,
1363											avatar);
1364								}
1365							}
1366						});
1367					} else {
1368						callback.error(
1369								R.string.error_publish_avatar_server_reject,
1370								avatar);
1371					}
1372				}
1373			});
1374		} else {
1375			callback.error(R.string.error_publish_avatar_converting, null);
1376		}
1377	}
1378
1379	public void fetchAvatar(Account account, Avatar avatar) {
1380		fetchAvatar(account, avatar, null);
1381	}
1382
1383	public void fetchAvatar(Account account, final Avatar avatar,
1384			final UiCallback<Avatar> callback) {
1385		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
1386		sendIqPacket(account, packet, new OnIqPacketReceived() {
1387
1388			@Override
1389			public void onIqPacketReceived(Account account, IqPacket result) {
1390				final String ERROR = account.getJid()
1391						+ ": fetching avatar for " + avatar.owner + " failed ";
1392				if (result.getType() == IqPacket.TYPE_RESULT) {
1393					avatar.image = mIqParser.avatarData(result);
1394					if (avatar.image != null) {
1395						if (getFileBackend().save(avatar)) {
1396							if (account.getJid().equals(avatar.owner)) {
1397								if (account.setAvatar(avatar.getFilename())) {
1398									databaseBackend.updateAccount(account);
1399								}
1400							} else {
1401								Contact contact = account.getRoster()
1402										.getContact(avatar.owner);
1403								contact.setAvatar(avatar.getFilename());
1404							}
1405							if (callback != null) {
1406								callback.success(avatar);
1407							}
1408							Log.d(Config.LOGTAG, account.getJid()
1409									+ ": succesfully fetched avatar for "
1410									+ avatar.owner);
1411							return;
1412						}
1413					} else {
1414
1415						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
1416					}
1417				} else {
1418					Element error = result.findChild("error");
1419					if (error == null) {
1420						Log.d(Config.LOGTAG, ERROR + "(server error)");
1421					} else {
1422						Log.d(Config.LOGTAG, ERROR + error.toString());
1423					}
1424				}
1425				if (callback != null) {
1426					callback.error(0, null);
1427				}
1428
1429			}
1430		});
1431	}
1432
1433	public void checkForAvatar(Account account,
1434			final UiCallback<Avatar> callback) {
1435		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
1436		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1437
1438			@Override
1439			public void onIqPacketReceived(Account account, IqPacket packet) {
1440				if (packet.getType() == IqPacket.TYPE_RESULT) {
1441					Element pubsub = packet.findChild("pubsub",
1442							"http://jabber.org/protocol/pubsub");
1443					if (pubsub != null) {
1444						Element items = pubsub.findChild("items");
1445						if (items != null) {
1446							Avatar avatar = Avatar.parseMetadata(items);
1447							if (avatar != null) {
1448								avatar.owner = account.getJid();
1449								if (fileBackend.isAvatarCached(avatar)) {
1450									if (account.setAvatar(avatar.getFilename())) {
1451										databaseBackend.updateAccount(account);
1452									}
1453									callback.success(avatar);
1454								} else {
1455									fetchAvatar(account, avatar, callback);
1456								}
1457								return;
1458							}
1459						}
1460					}
1461				}
1462				callback.error(0, null);
1463			}
1464		});
1465	}
1466
1467	public void deleteContactOnServer(Contact contact) {
1468		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
1469		contact.resetOption(Contact.Options.DIRTY_PUSH);
1470		contact.setOption(Contact.Options.DIRTY_DELETE);
1471		Account account = contact.getAccount();
1472		if (account.getStatus() == Account.STATUS_ONLINE) {
1473			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1474			Element item = iq.query("jabber:iq:roster").addChild("item");
1475			item.setAttribute("jid", contact.getJid());
1476			item.setAttribute("subscription", "remove");
1477			account.getXmppConnection().sendIqPacket(iq, null);
1478		}
1479	}
1480
1481	public void updateConversation(Conversation conversation) {
1482		this.databaseBackend.updateConversation(conversation);
1483	}
1484
1485	public void reconnectAccount(final Account account, final boolean force) {
1486		new Thread(new Runnable() {
1487
1488			@Override
1489			public void run() {
1490				if (account.getXmppConnection() != null) {
1491					disconnect(account, force);
1492				}
1493				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1494					if (account.getXmppConnection() == null) {
1495						account.setXmppConnection(createConnection(account));
1496					}
1497					Thread thread = new Thread(account.getXmppConnection());
1498					thread.start();
1499					scheduleWakeupCall((int) (Config.CONNECT_TIMEOUT * 1.2),
1500							false);
1501				}
1502			}
1503		}).start();
1504	}
1505
1506	public void invite(Conversation conversation, String contact) {
1507		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
1508		sendMessagePacket(conversation.getAccount(), packet);
1509	}
1510
1511	public void resetSendingToWaiting(Account account) {
1512		for (Conversation conversation : getConversations()) {
1513			if (conversation.getAccount() == account) {
1514				for (Message message : conversation.getMessages()) {
1515					if (message.getType() != Message.TYPE_IMAGE
1516							&& message.getStatus() == Message.STATUS_UNSEND) {
1517						markMessage(message, Message.STATUS_WAITING);
1518					}
1519				}
1520			}
1521		}
1522	}
1523
1524	public boolean markMessage(Account account, String recipient, String uuid,
1525			int status) {
1526		for (Conversation conversation : getConversations()) {
1527			if (conversation.getContactJid().equals(recipient)
1528					&& conversation.getAccount().equals(account)) {
1529				return markMessage(conversation, uuid, status);
1530			}
1531		}
1532		return false;
1533	}
1534
1535	public boolean markMessage(Conversation conversation, String uuid,
1536			int status) {
1537		for (Message message : conversation.getMessages()) {
1538			if (message.getUuid().equals(uuid)) {
1539				markMessage(message, status);
1540				return true;
1541			}
1542		}
1543		return false;
1544	}
1545
1546	public void markMessage(Message message, int status) {
1547		if (status == Message.STATUS_SEND_FAILED
1548				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
1549						.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
1550			return;
1551		}
1552		message.setStatus(status);
1553		databaseBackend.updateMessage(message);
1554		updateConversationUi();
1555	}
1556
1557	public SharedPreferences getPreferences() {
1558		return PreferenceManager
1559				.getDefaultSharedPreferences(getApplicationContext());
1560	}
1561
1562	public boolean forceEncryption() {
1563		return getPreferences().getBoolean("force_encryption", false);
1564	}
1565
1566	public boolean confirmMessages() {
1567		return getPreferences().getBoolean("confirm_messages", true);
1568	}
1569
1570	public boolean saveEncryptedMessages() {
1571		return !getPreferences().getBoolean("dont_save_encrypted", false);
1572	}
1573
1574	public boolean indicateReceived() {
1575		return getPreferences().getBoolean("indicate_received", false);
1576	}
1577
1578	public void notifyUi(Conversation conversation, boolean notify) {
1579		if (mOnConversationUpdate != null) {
1580			mOnConversationUpdate.onConversationUpdate();
1581		} else {
1582			UIHelper.updateNotification(getApplicationContext(),
1583					getConversations(), conversation, notify);
1584		}
1585	}
1586
1587	public void updateConversationUi() {
1588		if (mOnConversationUpdate != null) {
1589			mOnConversationUpdate.onConversationUpdate();
1590		}
1591	}
1592
1593	public void updateAccountUi() {
1594		if (mOnAccountUpdate != null) {
1595			mOnAccountUpdate.onAccountUpdate();
1596		}
1597	}
1598
1599	public void updateRosterUi() {
1600		if (mOnRosterUpdate != null) {
1601			mOnRosterUpdate.onRosterUpdate();
1602		}
1603	}
1604
1605	public Account findAccountByJid(String accountJid) {
1606		for (Account account : this.accounts) {
1607			if (account.getJid().equals(accountJid)) {
1608				return account;
1609			}
1610		}
1611		return null;
1612	}
1613
1614	public Conversation findConversationByUuid(String uuid) {
1615		for (Conversation conversation : getConversations()) {
1616			if (conversation.getUuid().equals(uuid)) {
1617				return conversation;
1618			}
1619		}
1620		return null;
1621	}
1622
1623	public void markRead(Conversation conversation) {
1624		conversation.markRead();
1625		String id = conversation.popLatestMarkableMessageId();
1626		if (confirmMessages() && id != null) {
1627			Account account = conversation.getAccount();
1628			String to = conversation.getContactJid();
1629			this.sendMessagePacket(conversation.getAccount(),
1630					mMessageGenerator.confirm(account, to, id));
1631		}
1632	}
1633
1634	public void failWaitingOtrMessages(Conversation conversation) {
1635		for (Message message : conversation.getMessages()) {
1636			if (message.getEncryption() == Message.ENCRYPTION_OTR
1637					&& message.getStatus() == Message.STATUS_WAITING) {
1638				markMessage(message, Message.STATUS_SEND_FAILED);
1639			}
1640		}
1641	}
1642
1643	public SecureRandom getRNG() {
1644		return this.mRandom;
1645	}
1646
1647	public MemorizingTrustManager getMemorizingTrustManager() {
1648		return this.mMemorizingTrustManager;
1649	}
1650
1651	public PowerManager getPowerManager() {
1652		return this.pm;
1653	}
1654
1655	public void replyWithNotAcceptable(Account account, MessagePacket packet) {
1656		if (account.getStatus() == Account.STATUS_ONLINE) {
1657			MessagePacket error = this.mMessageGenerator
1658					.generateNotAcceptable(packet);
1659			sendMessagePacket(account, error);
1660		}
1661	}
1662
1663	public void syncRosterToDisk(final Account account) {
1664		new Thread(new Runnable() {
1665
1666			@Override
1667			public void run() {
1668				databaseBackend.writeRoster(account.getRoster());
1669			}
1670		}).start();
1671
1672	}
1673
1674	public List<String> getKnownHosts() {
1675		List<String> hosts = new ArrayList<String>();
1676		for (Account account : getAccounts()) {
1677			if (!hosts.contains(account.getServer())) {
1678				hosts.add(account.getServer());
1679			}
1680			for (Contact contact : account.getRoster().getContacts()) {
1681				if (contact.showInRoster()) {
1682					String server = contact.getServer();
1683					if (server != null && !hosts.contains(server)) {
1684						hosts.add(server);
1685					}
1686				}
1687			}
1688		}
1689		return hosts;
1690	}
1691
1692	public List<String> getKnownConferenceHosts() {
1693		ArrayList<String> mucServers = new ArrayList<String>();
1694		for (Account account : accounts) {
1695			if (account.getXmppConnection() != null) {
1696				String server = account.getXmppConnection().getMucServer();
1697				if (server != null && !mucServers.contains(server)) {
1698					mucServers.add(server);
1699				}
1700			}
1701		}
1702		return mucServers;
1703	}
1704
1705	public void sendMessagePacket(Account account, MessagePacket packet) {
1706		account.getXmppConnection().sendMessagePacket(packet);
1707	}
1708
1709	public void sendPresencePacket(Account account, PresencePacket packet) {
1710		account.getXmppConnection().sendPresencePacket(packet);
1711	}
1712
1713	public void sendIqPacket(Account account, IqPacket packet,
1714			OnIqPacketReceived callback) {
1715		account.getXmppConnection().sendIqPacket(packet, callback);
1716	}
1717
1718	public MessageGenerator getMessageGenerator() {
1719		return this.mMessageGenerator;
1720	}
1721
1722	public PresenceGenerator getPresenceGenerator() {
1723		return this.mPresenceGenerator;
1724	}
1725
1726	public IqGenerator getIqGenerator() {
1727		return this.mIqGenerator;
1728	}
1729
1730	public JingleConnectionManager getJingleConnectionManager() {
1731		return this.mJingleConnectionManager;
1732	}
1733
1734	public interface OnConversationUpdate {
1735		public void onConversationUpdate();
1736	}
1737
1738	public interface OnAccountUpdate {
1739		public void onAccountUpdate();
1740	}
1741
1742	public interface OnRosterUpdate {
1743		public void onRosterUpdate();
1744	}
1745}