XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import android.annotation.SuppressLint;
   4import android.app.AlarmManager;
   5import android.app.PendingIntent;
   6import android.app.Service;
   7import android.content.Context;
   8import android.content.Intent;
   9import android.content.SharedPreferences;
  10import android.database.ContentObserver;
  11import android.graphics.Bitmap;
  12import android.net.ConnectivityManager;
  13import android.net.NetworkInfo;
  14import android.net.Uri;
  15import android.os.Binder;
  16import android.os.Bundle;
  17import android.os.FileObserver;
  18import android.os.IBinder;
  19import android.os.Looper;
  20import android.os.PowerManager;
  21import android.os.PowerManager.WakeLock;
  22import android.os.SystemClock;
  23import android.preference.PreferenceManager;
  24import android.provider.ContactsContract;
  25import android.util.Log;
  26import android.util.LruCache;
  27
  28import net.java.otr4j.OtrException;
  29import net.java.otr4j.session.Session;
  30import net.java.otr4j.session.SessionID;
  31import net.java.otr4j.session.SessionStatus;
  32
  33import org.openintents.openpgp.util.OpenPgpApi;
  34import org.openintents.openpgp.util.OpenPgpServiceConnection;
  35
  36import java.math.BigInteger;
  37import java.security.SecureRandom;
  38import java.util.ArrayList;
  39import java.util.Arrays;
  40import java.util.Collection;
  41import java.util.Collections;
  42import java.util.Comparator;
  43import java.util.Hashtable;
  44import java.util.Iterator;
  45import java.util.List;
  46import java.util.Locale;
  47import java.util.Map;
  48import java.util.concurrent.CopyOnWriteArrayList;
  49
  50import de.duenndns.ssl.MemorizingTrustManager;
  51import eu.siacs.conversations.Config;
  52import eu.siacs.conversations.R;
  53import eu.siacs.conversations.crypto.PgpEngine;
  54import eu.siacs.conversations.entities.Account;
  55import eu.siacs.conversations.entities.Blockable;
  56import eu.siacs.conversations.entities.Bookmark;
  57import eu.siacs.conversations.entities.Contact;
  58import eu.siacs.conversations.entities.Conversation;
  59import eu.siacs.conversations.entities.Downloadable;
  60import eu.siacs.conversations.entities.DownloadablePlaceholder;
  61import eu.siacs.conversations.entities.Message;
  62import eu.siacs.conversations.entities.MucOptions;
  63import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  64import eu.siacs.conversations.entities.Presences;
  65import eu.siacs.conversations.generator.IqGenerator;
  66import eu.siacs.conversations.generator.MessageGenerator;
  67import eu.siacs.conversations.generator.PresenceGenerator;
  68import eu.siacs.conversations.http.HttpConnectionManager;
  69import eu.siacs.conversations.parser.IqParser;
  70import eu.siacs.conversations.parser.MessageParser;
  71import eu.siacs.conversations.parser.PresenceParser;
  72import eu.siacs.conversations.persistance.DatabaseBackend;
  73import eu.siacs.conversations.persistance.FileBackend;
  74import eu.siacs.conversations.ui.UiCallback;
  75import eu.siacs.conversations.utils.CryptoHelper;
  76import eu.siacs.conversations.utils.ExceptionHelper;
  77import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  78import eu.siacs.conversations.utils.PRNGFixes;
  79import eu.siacs.conversations.utils.PhoneHelper;
  80import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
  81import eu.siacs.conversations.utils.Xmlns;
  82import eu.siacs.conversations.xml.Element;
  83import eu.siacs.conversations.xmpp.OnBindListener;
  84import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  85import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  86import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  87import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  88import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  89import eu.siacs.conversations.xmpp.OnStatusChanged;
  90import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  91import eu.siacs.conversations.xmpp.XmppConnection;
  92import eu.siacs.conversations.xmpp.chatstate.ChatState;
  93import eu.siacs.conversations.xmpp.forms.Data;
  94import eu.siacs.conversations.xmpp.forms.Field;
  95import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  96import eu.siacs.conversations.xmpp.jid.Jid;
  97import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  98import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  99import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
 100import eu.siacs.conversations.xmpp.pep.Avatar;
 101import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 102import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 103import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 104import me.leolin.shortcutbadger.ShortcutBadger;
 105
 106public class XmppConnectionService extends Service implements OnPhoneContactsLoadedListener {
 107
 108	public static final String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 109	public static final String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 110	private static final String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 111	public static final String ACTION_TRY_AGAIN = "try_again";
 112	public static final String ACTION_DISABLE_ACCOUNT = "disable_account";
 113	private ContentObserver contactObserver = new ContentObserver(null) {
 114		@Override
 115		public void onChange(boolean selfChange) {
 116			super.onChange(selfChange);
 117			Intent intent = new Intent(getApplicationContext(),
 118					XmppConnectionService.class);
 119			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 120			startService(intent);
 121		}
 122	};
 123
 124	private final SerialSingleThreadExecutor mFileAddingExecutor = new SerialSingleThreadExecutor();
 125	private final SerialSingleThreadExecutor mDatabaseExecutor = new SerialSingleThreadExecutor();
 126
 127	private final IBinder mBinder = new XmppConnectionBinder();
 128	private final List<Conversation> conversations = new CopyOnWriteArrayList<>();
 129	private final FileObserver fileObserver = new FileObserver(
 130			FileBackend.getConversationsImageDirectory()) {
 131
 132		@Override
 133		public void onEvent(int event, String path) {
 134			if (event == FileObserver.DELETE) {
 135				markFileDeleted(path.split("\\.")[0]);
 136			}
 137		}
 138	};
 139	private final OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 140
 141		@Override
 142		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 143			mJingleConnectionManager.deliverPacket(account, packet);
 144		}
 145	};
 146	private final OnBindListener mOnBindListener = new OnBindListener() {
 147
 148		@Override
 149		public void onBind(final Account account) {
 150			account.getRoster().clearPresences();
 151			account.pendingConferenceJoins.clear();
 152			account.pendingConferenceLeaves.clear();
 153			fetchRosterFromServer(account);
 154			fetchBookmarks(account);
 155			sendPresence(account);
 156			connectMultiModeConversations(account);
 157			updateConversationUi();
 158		}
 159	};
 160	private final OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 161
 162		@Override
 163		public void onMessageAcknowledged(Account account, String uuid) {
 164			for (final Conversation conversation : getConversations()) {
 165				if (conversation.getAccount() == account) {
 166					Message message = conversation.findUnsentMessageWithUuid(uuid);
 167					if (message != null) {
 168						markMessage(message, Message.STATUS_SEND);
 169						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 170							databaseBackend.updateConversation(conversation);
 171						}
 172					}
 173				}
 174			}
 175		}
 176	};
 177	private final IqGenerator mIqGenerator = new IqGenerator(this);
 178	public DatabaseBackend databaseBackend;
 179	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 180
 181		@Override
 182		public void onContactStatusChanged(Contact contact, boolean online) {
 183			Conversation conversation = find(getConversations(), contact);
 184			if (conversation != null) {
 185				if (online) {
 186					conversation.endOtrIfNeeded();
 187					if (contact.getPresences().size() == 1) {
 188						sendUnsentMessages(conversation);
 189					}
 190				} else {
 191					if (contact.getPresences().size() >= 1) {
 192						if (conversation.hasValidOtrSession()) {
 193							String otrResource = conversation.getOtrSession().getSessionID().getUserID();
 194							if (!(Arrays.asList(contact.getPresences().asStringArray()).contains(otrResource))) {
 195								conversation.endOtrIfNeeded();
 196							}
 197						}
 198					} else {
 199						conversation.endOtrIfNeeded();
 200					}
 201				}
 202			}
 203		}
 204	};
 205	private FileBackend fileBackend = new FileBackend(this);
 206	private MemorizingTrustManager mMemorizingTrustManager;
 207	private NotificationService mNotificationService = new NotificationService(
 208			this);
 209	private OnMessagePacketReceived mMessageParser = new MessageParser(this);
 210	private OnPresencePacketReceived mPresenceParser = new PresenceParser(this);
 211	private IqParser mIqParser = new IqParser(this);
 212	private OnIqPacketReceived mDefaultIqHandler = new OnIqPacketReceived() {
 213		@Override
 214		public void onIqPacketReceived(Account account, IqPacket packet) {
 215			if (packet.getType() == IqPacket.TYPE.ERROR) {
 216				Element error = packet.findChild("error");
 217				String text = error != null ? error.findChildContent("text") : null;
 218				if (text != null) {
 219					Log.d(Config.LOGTAG,account.getJid().toBareJid()+": received iq error - "+text);
 220				}
 221			}
 222		}
 223	};
 224	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 225	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 226	private List<Account> accounts;
 227	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 228			this);
 229	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 230			this);
 231	private AvatarService mAvatarService = new AvatarService(this);
 232	private final List<String> mInProgressAvatarFetches = new ArrayList<>();
 233	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 234	private OnConversationUpdate mOnConversationUpdate = null;
 235	private int convChangedListenerCount = 0;
 236	private int unreadCount = 0;
 237	private OnAccountUpdate mOnAccountUpdate = null;
 238	private OnStatusChanged statusListener = new OnStatusChanged() {
 239
 240		@Override
 241		public void onStatusChanged(Account account) {
 242			XmppConnection connection = account.getXmppConnection();
 243			if (mOnAccountUpdate != null) {
 244				mOnAccountUpdate.onAccountUpdate();
 245			}
 246			if (account.getStatus() == Account.State.ONLINE) {
 247				for (Conversation conversation : account.pendingConferenceLeaves) {
 248					leaveMuc(conversation);
 249				}
 250				for (Conversation conversation : account.pendingConferenceJoins) {
 251					joinMuc(conversation);
 252				}
 253				mMessageArchiveService.executePendingQueries(account);
 254				mJingleConnectionManager.cancelInTransmission();
 255				List<Conversation> conversations = getConversations();
 256				for (Conversation conversation : conversations) {
 257					if (conversation.getAccount() == account) {
 258						conversation.startOtrIfNeeded();
 259						sendUnsentMessages(conversation);
 260					}
 261				}
 262				if (connection != null && connection.getFeatures().csi()) {
 263					if (checkListeners()) {
 264						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 265								+ " sending csi//inactive");
 266						connection.sendInactive();
 267					} else {
 268						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 269								+ " sending csi//active");
 270						connection.sendActive();
 271					}
 272				}
 273				syncDirtyContacts(account);
 274				scheduleWakeUpCall(Config.PING_MAX_INTERVAL,account.getUuid().hashCode());
 275			} else if (account.getStatus() == Account.State.OFFLINE) {
 276				resetSendingToWaiting(account);
 277				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 278					int timeToReconnect = mRandom.nextInt(50) + 10;
 279					scheduleWakeUpCall(timeToReconnect,account.getUuid().hashCode());
 280				}
 281			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 282				databaseBackend.updateAccount(account);
 283				reconnectAccount(account, true);
 284			} else if ((account.getStatus() != Account.State.CONNECTING)
 285					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 286				if (connection != null) {
 287					int next = connection.getTimeToNextAttempt();
 288					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 289							+ ": error connecting account. try again in "
 290							+ next + "s for the "
 291							+ (connection.getAttempt() + 1) + " time");
 292					scheduleWakeUpCall(next,account.getUuid().hashCode());
 293				}
 294					}
 295			getNotificationService().updateErrorNotification();
 296		}
 297	};
 298	private int accountChangedListenerCount = 0;
 299	private OnRosterUpdate mOnRosterUpdate = null;
 300	private OnUpdateBlocklist mOnUpdateBlocklist = null;
 301	private int updateBlocklistListenerCount = 0;
 302	private int rosterChangedListenerCount = 0;
 303	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 304	private int mucRosterChangedListenerCount = 0;
 305	private SecureRandom mRandom;
 306	private OpenPgpServiceConnection pgpServiceConnection;
 307	private PgpEngine mPgpEngine = null;
 308	private WakeLock wakeLock;
 309	private PowerManager pm;
 310	private LruCache<String, Bitmap> mBitmapCache;
 311	private Thread mPhoneContactMergerThread;
 312
 313	private boolean mRestoredFromDatabase = false;
 314	public boolean areMessagesInitialized() {
 315		return this.mRestoredFromDatabase;
 316	}
 317
 318	public PgpEngine getPgpEngine() {
 319		if (pgpServiceConnection.isBound()) {
 320			if (this.mPgpEngine == null) {
 321				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 322							getApplicationContext(),
 323							pgpServiceConnection.getService()), this);
 324			}
 325			return mPgpEngine;
 326		} else {
 327			return null;
 328		}
 329
 330	}
 331
 332	public FileBackend getFileBackend() {
 333		return this.fileBackend;
 334	}
 335
 336	public AvatarService getAvatarService() {
 337		return this.mAvatarService;
 338	}
 339
 340	public void attachLocationToConversation(final Conversation conversation,
 341											 final Uri uri,
 342											 final UiCallback<Message> callback) {
 343		int encryption = conversation.getNextEncryption(forceEncryption());
 344		if (encryption == Message.ENCRYPTION_PGP) {
 345			encryption = Message.ENCRYPTION_DECRYPTED;
 346		}
 347		Message message = new Message(conversation,uri.toString(),encryption);
 348		if (conversation.getNextCounterpart() != null) {
 349			message.setCounterpart(conversation.getNextCounterpart());
 350		}
 351		if (encryption == Message.ENCRYPTION_DECRYPTED) {
 352			getPgpEngine().encrypt(message, callback);
 353		} else {
 354			callback.success(message);
 355		}
 356	}
 357
 358	public void attachFileToConversation(final Conversation conversation,
 359			final Uri uri,
 360			final UiCallback<Message> callback) {
 361		final Message message;
 362		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 363			message = new Message(conversation, "",
 364					Message.ENCRYPTION_DECRYPTED);
 365		} else {
 366			message = new Message(conversation, "",
 367					conversation.getNextEncryption(forceEncryption()));
 368		}
 369		message.setCounterpart(conversation.getNextCounterpart());
 370		message.setType(Message.TYPE_FILE);
 371		String path = getFileBackend().getOriginalPath(uri);
 372		if (path!=null) {
 373			message.setRelativeFilePath(path);
 374			getFileBackend().updateFileParams(message);
 375			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 376				getPgpEngine().encrypt(message, callback);
 377			} else {
 378				callback.success(message);
 379			}
 380		} else {
 381			mFileAddingExecutor.execute(new Runnable() {
 382				@Override
 383				public void run() {
 384					try {
 385						getFileBackend().copyFileToPrivateStorage(message, uri);
 386						getFileBackend().updateFileParams(message);
 387						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 388							getPgpEngine().encrypt(message, callback);
 389						} else {
 390							callback.success(message);
 391						}
 392					} catch (FileBackend.FileCopyException e) {
 393						callback.error(e.getResId(), message);
 394					}
 395				}
 396			});
 397		}
 398	}
 399
 400	public void attachImageToConversation(final Conversation conversation,
 401			final Uri uri, final UiCallback<Message> callback) {
 402		final Message message;
 403		if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 404			message = new Message(conversation, "",
 405					Message.ENCRYPTION_DECRYPTED);
 406		} else {
 407			message = new Message(conversation, "",
 408					conversation.getNextEncryption(forceEncryption()));
 409		}
 410		message.setCounterpart(conversation.getNextCounterpart());
 411		message.setType(Message.TYPE_IMAGE);
 412		mFileAddingExecutor.execute(new Runnable() {
 413
 414			@Override
 415			public void run() {
 416				try {
 417					getFileBackend().copyImageToPrivateStorage(message, uri);
 418					if (conversation.getNextEncryption(forceEncryption()) == Message.ENCRYPTION_PGP) {
 419						getPgpEngine().encrypt(message, callback);
 420					} else {
 421						callback.success(message);
 422					}
 423				} catch (final FileBackend.FileCopyException e) {
 424					callback.error(e.getResId(), message);
 425				}
 426			}
 427		});
 428	}
 429
 430	public Conversation find(Bookmark bookmark) {
 431		return find(bookmark.getAccount(), bookmark.getJid());
 432	}
 433
 434	public Conversation find(final Account account, final Jid jid) {
 435		return find(getConversations(), account, jid);
 436	}
 437
 438	@Override
 439	public int onStartCommand(Intent intent, int flags, int startId) {
 440		final String action = intent == null ? null : intent.getAction();
 441		if (action != null) {
 442			switch (action) {
 443				case ConnectivityManager.CONNECTIVITY_ACTION:
 444					if (hasInternetConnection() && Config.RESET_ATTEMPT_COUNT_ON_NETWORK_CHANGE) {
 445						resetAllAttemptCounts(true);
 446					}
 447					break;
 448				case ACTION_MERGE_PHONE_CONTACTS:
 449					if (mRestoredFromDatabase) {
 450						PhoneHelper.loadPhoneContacts(getApplicationContext(),
 451								new CopyOnWriteArrayList<Bundle>(),
 452								this);
 453					}
 454					return START_STICKY;
 455				case Intent.ACTION_SHUTDOWN:
 456					logoutAndSave();
 457					return START_NOT_STICKY;
 458				case ACTION_CLEAR_NOTIFICATION:
 459					mNotificationService.clear();
 460					break;
 461				case ACTION_DISABLE_FOREGROUND:
 462					getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 463					toggleForegroundService();
 464					break;
 465				case ACTION_TRY_AGAIN:
 466					resetAllAttemptCounts(false);
 467					break;
 468				case ACTION_DISABLE_ACCOUNT:
 469					try {
 470						String jid = intent.getStringExtra("account");
 471						Account account = jid == null ? null : findAccountByJid(Jid.fromString(jid));
 472						if (account != null) {
 473							account.setOption(Account.OPTION_DISABLED,true);
 474							updateAccount(account);
 475						}
 476					} catch (final InvalidJidException ignored) {
 477						break;
 478					}
 479					break;
 480			}
 481		}
 482		this.wakeLock.acquire();
 483
 484		for (Account account : accounts) {
 485			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 486				if (!hasInternetConnection()) {
 487					account.setStatus(Account.State.NO_INTERNET);
 488					if (statusListener != null) {
 489						statusListener.onStatusChanged(account);
 490					}
 491				} else {
 492					if (account.getStatus() == Account.State.NO_INTERNET) {
 493						account.setStatus(Account.State.OFFLINE);
 494						if (statusListener != null) {
 495							statusListener.onStatusChanged(account);
 496						}
 497					}
 498					if (account.getStatus() == Account.State.ONLINE) {
 499						long lastReceived = account.getXmppConnection().getLastPacketReceived();
 500						long lastSent = account.getXmppConnection().getLastPingSent();
 501						long pingInterval = "ui".equals(action) ? Config.PING_MIN_INTERVAL * 1000 : Config.PING_MAX_INTERVAL * 1000;
 502						long msToNextPing = (Math.max(lastReceived,lastSent) + pingInterval) - SystemClock.elapsedRealtime();
 503						long pingTimeoutIn = (lastSent + Config.PING_TIMEOUT * 1000) - SystemClock.elapsedRealtime();
 504						if (lastSent > lastReceived) {
 505							if (pingTimeoutIn < 0) {
 506								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": ping timeout");
 507								this.reconnectAccount(account, true);
 508							} else {
 509								int secs = (int) (pingTimeoutIn / 1000);
 510								this.scheduleWakeUpCall(secs,account.getUuid().hashCode());
 511							}
 512						} else if (msToNextPing <= 0) {
 513							account.getXmppConnection().sendPing();
 514							Log.d(Config.LOGTAG, account.getJid().toBareJid()+" send ping");
 515							this.scheduleWakeUpCall(Config.PING_TIMEOUT,account.getUuid().hashCode());
 516						} else {
 517							this.scheduleWakeUpCall((int) (msToNextPing / 1000), account.getUuid().hashCode());
 518						}
 519					} else if (account.getStatus() == Account.State.OFFLINE) {
 520						reconnectAccount(account,true);
 521					} else if (account.getStatus() == Account.State.CONNECTING) {
 522						long timeout = Config.CONNECT_TIMEOUT - ((SystemClock.elapsedRealtime() - account.getXmppConnection().getLastConnect()) / 1000);
 523						if (timeout < 0) {
 524							Log.d(Config.LOGTAG, account.getJid() + ": time out during connect reconnecting");
 525							reconnectAccount(account, true);
 526						} else {
 527							scheduleWakeUpCall((int) timeout,account.getUuid().hashCode());
 528						}
 529					} else {
 530						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 531							reconnectAccount(account, true);
 532						}
 533					}
 534
 535				}
 536				if (mOnAccountUpdate != null) {
 537					mOnAccountUpdate.onAccountUpdate();
 538				}
 539			}
 540		}
 541		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 542			if (!pm.isScreenOn()) {
 543			removeStaleListeners();
 544			}*/
 545		if (wakeLock.isHeld()) {
 546			try {
 547				wakeLock.release();
 548			} catch (final RuntimeException ignored) {
 549			}
 550		}
 551		return START_STICKY;
 552	}
 553
 554	private void resetAllAttemptCounts(boolean reallyAll) {
 555		Log.d(Config.LOGTAG,"resetting all attepmt counts");
 556		for(Account account : accounts) {
 557			if (account.hasErrorStatus() || reallyAll) {
 558				final XmppConnection connection = account.getXmppConnection();
 559				if (connection != null) {
 560					connection.resetAttemptCount();
 561				}
 562			}
 563		}
 564	}
 565
 566	public boolean hasInternetConnection() {
 567		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 568			.getSystemService(Context.CONNECTIVITY_SERVICE);
 569		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 570		return activeNetwork != null && activeNetwork.isConnected();
 571	}
 572
 573	@SuppressLint("TrulyRandom")
 574	@Override
 575	public void onCreate() {
 576		ExceptionHelper.init(getApplicationContext());
 577		PRNGFixes.apply();
 578		this.mRandom = new SecureRandom();
 579		updateMemorizingTrustmanager();
 580		final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 581		final int cacheSize = maxMemory / 8;
 582		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 583			@Override
 584			protected int sizeOf(final String key, final Bitmap bitmap) {
 585				return bitmap.getByteCount() / 1024;
 586			}
 587		};
 588
 589		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 590		this.accounts = databaseBackend.getAccounts();
 591
 592		for (final Account account : this.accounts) {
 593			account.initAccountServices(this);
 594		}
 595		restoreFromDatabase();
 596
 597		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 598		this.fileObserver.startWatching();
 599		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 600		this.pgpServiceConnection.bindToService();
 601
 602		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 603		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 604		toggleForegroundService();
 605	}
 606
 607	public void toggleForegroundService() {
 608		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 609			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 610		} else {
 611			stopForeground(true);
 612		}
 613	}
 614
 615	@Override
 616	public void onTaskRemoved(final Intent rootIntent) {
 617		super.onTaskRemoved(rootIntent);
 618		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 619			this.logoutAndSave();
 620		}
 621	}
 622
 623	private void logoutAndSave() {
 624		for (final Account account : accounts) {
 625			databaseBackend.writeRoster(account.getRoster());
 626			if (account.getXmppConnection() != null) {
 627				disconnect(account, false);
 628			}
 629		}
 630		Context context = getApplicationContext();
 631		AlarmManager alarmManager = (AlarmManager) context
 632			.getSystemService(Context.ALARM_SERVICE);
 633		Intent intent = new Intent(context, EventReceiver.class);
 634		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 635		Log.d(Config.LOGTAG, "good bye");
 636		stopSelf();
 637	}
 638
 639	protected void scheduleWakeUpCall(int seconds, int requestCode) {
 640		final long timeToWake = SystemClock.elapsedRealtime() + (seconds < 0 ? 1 : seconds + 1) * 1000;
 641
 642		Context context = getApplicationContext();
 643		AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
 644
 645		Intent intent = new Intent(context, EventReceiver.class);
 646		intent.setAction("ping");
 647		PendingIntent alarmIntent = PendingIntent.getBroadcast(context, requestCode, intent, 0);
 648		alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake, alarmIntent);
 649	}
 650
 651	public XmppConnection createConnection(final Account account) {
 652		final SharedPreferences sharedPref = getPreferences();
 653		account.setResource(sharedPref.getString("resource", "mobile")
 654				.toLowerCase(Locale.getDefault()));
 655		final XmppConnection connection = new XmppConnection(account, this);
 656		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 657		connection.setOnStatusChangedListener(this.statusListener);
 658		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 659		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 660		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 661		connection.setOnBindListener(this.mOnBindListener);
 662		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 663		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 664		return connection;
 665	}
 666
 667	public void sendChatState(Conversation conversation) {
 668		if (sendChatStates()) {
 669			MessagePacket packet = mMessageGenerator.generateChatState(conversation);
 670			sendMessagePacket(conversation.getAccount(), packet);
 671		}
 672	}
 673
 674	private void sendFileMessage(final Message message) {
 675		Log.d(Config.LOGTAG, "send file message");
 676		final Account account = message.getConversation().getAccount();
 677		final XmppConnection connection = account.getXmppConnection();
 678		if (connection != null && connection.getFeatures().httpUpload()) {
 679			mHttpConnectionManager.createNewUploadConnection(message);
 680		} else {
 681			mJingleConnectionManager.createNewConnection(message);
 682		}
 683	}
 684
 685	public void sendMessage(final Message message) {
 686		final Account account = message.getConversation().getAccount();
 687		account.deactivateGracePeriod();
 688		final Conversation conv = message.getConversation();
 689		MessagePacket packet = null;
 690		boolean saveInDb = true;
 691		boolean send = false;
 692		if (account.getStatus() == Account.State.ONLINE
 693				&& account.getXmppConnection() != null) {
 694			if (message.needsUploading()) {
 695				if (message.getCounterpart() != null) {
 696					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 697						if (!conv.hasValidOtrSession()) {
 698							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 699							message.setStatus(Message.STATUS_WAITING);
 700						} else if (conv.hasValidOtrSession()
 701								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 702							mJingleConnectionManager.createNewConnection(message);
 703						}
 704					} else {
 705						this.sendFileMessage(message);
 706
 707					}
 708				} else {
 709					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 710						conv.startOtrIfNeeded();
 711					}
 712					message.setStatus(Message.STATUS_WAITING);
 713				}
 714			} else {
 715				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 716					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 717						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 718						message.setStatus(Message.STATUS_WAITING);
 719					} else if (conv.hasValidOtrSession()) {
 720						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 721							packet = mMessageGenerator.generateOtrChat(message);
 722							send = true;
 723						} else {
 724							message.setStatus(Message.STATUS_WAITING);
 725							conv.startOtrIfNeeded();
 726						}
 727					} else {
 728						message.setStatus(Message.STATUS_WAITING);
 729					}
 730				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 731					message.getConversation().endOtrIfNeeded();
 732					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 733						@Override
 734						public void onMessageFound(Message message) {
 735							markMessage(message,Message.STATUS_SEND_FAILED);
 736						}
 737					});
 738					packet = mMessageGenerator.generatePgpChat(message);
 739					send = true;
 740				} else {
 741					message.getConversation().endOtrIfNeeded();
 742					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 743						@Override
 744						public void onMessageFound(Message message) {
 745							markMessage(message,Message.STATUS_SEND_FAILED);
 746						}
 747					});
 748					packet = mMessageGenerator.generateChat(message);
 749					send = true;
 750				}
 751			}
 752			if (!account.getXmppConnection().getFeatures().sm()
 753					&& conv.getMode() != Conversation.MODE_MULTI) {
 754				message.setStatus(Message.STATUS_SEND);
 755					}
 756		} else {
 757			message.setStatus(Message.STATUS_WAITING);
 758			if (message.getType() == Message.TYPE_TEXT) {
 759				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 760					String pgpBody = message.getEncryptedBody();
 761					String decryptedBody = message.getBody();
 762					message.setBody(pgpBody);
 763					message.setEncryption(Message.ENCRYPTION_PGP);
 764					databaseBackend.createMessage(message);
 765					saveInDb = false;
 766					message.setBody(decryptedBody);
 767					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 768				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 769					if (!conv.hasValidOtrSession()
 770							&& message.getCounterpart() != null) {
 771						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 772							}
 773				}
 774			}
 775
 776		}
 777		conv.add(message);
 778		if (saveInDb) {
 779			if (message.getEncryption() == Message.ENCRYPTION_NONE
 780					|| saveEncryptedMessages()) {
 781				databaseBackend.createMessage(message);
 782					}
 783		}
 784		if ((send) && (packet != null)) {
 785			if (conv.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 786				if (this.sendChatStates()) {
 787					packet.addChild(ChatState.toElement(conv.getOutgoingChatState()));
 788				}
 789			}
 790			sendMessagePacket(account, packet);
 791		}
 792		updateConversationUi();
 793	}
 794
 795	private void sendUnsentMessages(final Conversation conversation) {
 796		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 797
 798			@Override
 799			public void onMessageFound(Message message) {
 800				resendMessage(message);
 801			}
 802		});
 803	}
 804
 805	public void resendMessage(final Message message) {
 806		Account account = message.getConversation().getAccount();
 807		MessagePacket packet = null;
 808		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 809			Presences presences = message.getConversation().getContact().getPresences();
 810			if (!message.getConversation().hasValidOtrSession()) {
 811				if ((message.getCounterpart() != null)
 812						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 813					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 814				} else {
 815					if (presences.size() == 1) {
 816						String presence = presences.asStringArray()[0];
 817						message.getConversation().startOtrSession(presence, true);
 818					}
 819				}
 820			} else {
 821				if (message.getConversation().getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 822					try {
 823						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 824						if (message.needsUploading()) {
 825							mJingleConnectionManager.createNewConnection(message);
 826						} else {
 827							packet = mMessageGenerator.generateOtrChat(message, true);
 828						}
 829					} catch (final InvalidJidException ignored) {
 830
 831					}
 832				}
 833			}
 834		} else if (message.needsUploading()) {
 835			Contact contact = message.getConversation().getContact();
 836			Presences presences = contact.getPresences();
 837			if ((message.getCounterpart() != null)
 838					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 839				this.sendFileMessage(message);
 840			} else {
 841				if (presences.size() == 1) {
 842					String presence = presences.asStringArray()[0];
 843					try {
 844						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 845					} catch (InvalidJidException e) {
 846						return;
 847					}
 848					this.sendFileMessage(message);
 849				}
 850			}
 851		} else {
 852			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 853				packet = mMessageGenerator.generateChat(message, true);
 854			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 855					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 856				packet = mMessageGenerator.generatePgpChat(message, true);
 857			}
 858		}
 859		if (packet != null) {
 860			if (!account.getXmppConnection().getFeatures().sm()
 861					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 862				markMessage(message, Message.STATUS_SEND);
 863			} else {
 864				markMessage(message, Message.STATUS_UNSEND);
 865			}
 866			if (message.getConversation().setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 867				if (this.sendChatStates()) {
 868					packet.addChild(ChatState.toElement(message.getConversation().getOutgoingChatState()));
 869				}
 870			}
 871			sendMessagePacket(account, packet);
 872		}
 873	}
 874
 875	public void fetchRosterFromServer(final Account account) {
 876		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 877		if (!"".equals(account.getRosterVersion())) {
 878			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 879					+ ": fetching roster version " + account.getRosterVersion());
 880		} else {
 881			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 882		}
 883		iqPacket.query(Xmlns.ROSTER).setAttribute("ver",
 884				account.getRosterVersion());
 885		account.getXmppConnection().sendIqPacket(iqPacket, mIqParser);
 886	}
 887
 888	public void fetchBookmarks(final Account account) {
 889		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 890		final Element query = iqPacket.query("jabber:iq:private");
 891		query.addChild("storage", "storage:bookmarks");
 892		final OnIqPacketReceived callback = new OnIqPacketReceived() {
 893
 894			@Override
 895			public void onIqPacketReceived(final Account account, final IqPacket packet) {
 896				final Element query = packet.query();
 897				final List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 898				final Element storage = query.findChild("storage",
 899						"storage:bookmarks");
 900				if (storage != null) {
 901					for (final Element item : storage.getChildren()) {
 902						if (item.getName().equals("conference")) {
 903							final Bookmark bookmark = Bookmark.parse(item, account);
 904							bookmarks.add(bookmark);
 905							Conversation conversation = find(bookmark);
 906							if (conversation != null) {
 907								conversation.setBookmark(bookmark);
 908							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 909								conversation = findOrCreateConversation(
 910										account, bookmark.getJid(), true);
 911								conversation.setBookmark(bookmark);
 912								joinMuc(conversation);
 913							}
 914						}
 915					}
 916				}
 917				account.setBookmarks(bookmarks);
 918			}
 919		};
 920		sendIqPacket(account, iqPacket, callback);
 921	}
 922
 923	public void pushBookmarks(Account account) {
 924		IqPacket iqPacket = new IqPacket(IqPacket.TYPE.SET);
 925		Element query = iqPacket.query("jabber:iq:private");
 926		Element storage = query.addChild("storage", "storage:bookmarks");
 927		for (Bookmark bookmark : account.getBookmarks()) {
 928			storage.addChild(bookmark);
 929		}
 930		sendIqPacket(account, iqPacket, mDefaultIqHandler);
 931	}
 932
 933	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 934		if (mPhoneContactMergerThread != null) {
 935			mPhoneContactMergerThread.interrupt();
 936		}
 937		mPhoneContactMergerThread = new Thread(new Runnable() {
 938			@Override
 939			public void run() {
 940				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 941				for (Account account : accounts) {
 942					List<Contact> withSystemAccounts = account.getRoster().getWithSystemAccounts();
 943					for (Bundle phoneContact : phoneContacts) {
 944						if (Thread.interrupted()) {
 945							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 946							return;
 947						}
 948						Jid jid;
 949						try {
 950							jid = Jid.fromString(phoneContact.getString("jid"));
 951						} catch (final InvalidJidException e) {
 952							continue;
 953						}
 954						final Contact contact = account.getRoster().getContact(jid);
 955						String systemAccount = phoneContact.getInt("phoneid")
 956							+ "#"
 957							+ phoneContact.getString("lookup");
 958						contact.setSystemAccount(systemAccount);
 959						if (contact.setPhotoUri(phoneContact.getString("photouri"))) {
 960							getAvatarService().clear(contact);
 961						}
 962						contact.setSystemName(phoneContact.getString("displayname"));
 963						withSystemAccounts.remove(contact);
 964					}
 965					for(Contact contact : withSystemAccounts) {
 966						contact.setSystemAccount(null);
 967						contact.setSystemName(null);
 968						if (contact.setPhotoUri(null)) {
 969							getAvatarService().clear(contact);
 970						}
 971					}
 972				}
 973				Log.d(Config.LOGTAG,"finished merging phone contacts");
 974				updateAccountUi();
 975			}
 976		});
 977		mPhoneContactMergerThread.start();
 978	}
 979
 980	private void restoreFromDatabase() {
 981		synchronized (this.conversations) {
 982			final Map<String, Account> accountLookupTable = new Hashtable<>();
 983			for (Account account : this.accounts) {
 984				accountLookupTable.put(account.getUuid(), account);
 985			}
 986			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 987			for (Conversation conversation : this.conversations) {
 988				Account account = accountLookupTable.get(conversation.getAccountUuid());
 989				conversation.setAccount(account);
 990			}
 991			Runnable runnable =new Runnable() {
 992				@Override
 993				public void run() {
 994					Log.d(Config.LOGTAG,"restoring roster");
 995					for(Account account : accounts) {
 996						databaseBackend.readRoster(account.getRoster());
 997					}
 998					getBitmapCache().evictAll();
 999					Looper.prepare();
1000					PhoneHelper.loadPhoneContacts(getApplicationContext(),
1001							new CopyOnWriteArrayList<Bundle>(),
1002							XmppConnectionService.this);
1003					Log.d(Config.LOGTAG,"restoring messages");
1004					for (Conversation conversation : conversations) {
1005						conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1006						checkDeletedFiles(conversation);
1007					}
1008					mRestoredFromDatabase = true;
1009					Log.d(Config.LOGTAG,"restored all messages");
1010					updateConversationUi();
1011				}
1012			};
1013			mDatabaseExecutor.execute(runnable);
1014		}
1015	}
1016
1017	public List<Conversation> getConversations() {
1018		return this.conversations;
1019	}
1020
1021	private void checkDeletedFiles(Conversation conversation) {
1022		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
1023
1024			@Override
1025			public void onMessageFound(Message message) {
1026				if (!getFileBackend().isFileAvailable(message)) {
1027					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
1028				}
1029			}
1030		});
1031	}
1032
1033	private void markFileDeleted(String uuid) {
1034		for (Conversation conversation : getConversations()) {
1035			Message message = conversation.findMessageWithFileAndUuid(uuid);
1036			if (message != null) {
1037				if (!getFileBackend().isFileAvailable(message)) {
1038					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
1039					updateConversationUi();
1040				}
1041				return;
1042			}
1043		}
1044	}
1045
1046	public void populateWithOrderedConversations(final List<Conversation> list) {
1047		populateWithOrderedConversations(list, true);
1048	}
1049
1050	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
1051		list.clear();
1052		if (includeConferences) {
1053			list.addAll(getConversations());
1054		} else {
1055			for (Conversation conversation : getConversations()) {
1056				if (conversation.getMode() == Conversation.MODE_SINGLE) {
1057					list.add(conversation);
1058				}
1059			}
1060		}
1061		Collections.sort(list, new Comparator<Conversation>() {
1062			@Override
1063			public int compare(Conversation lhs, Conversation rhs) {
1064				Message left = lhs.getLatestMessage();
1065				Message right = rhs.getLatestMessage();
1066				if (left.getTimeSent() > right.getTimeSent()) {
1067					return -1;
1068				} else if (left.getTimeSent() < right.getTimeSent()) {
1069					return 1;
1070				} else {
1071					return 0;
1072				}
1073			}
1074		});
1075	}
1076
1077	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
1078		Log.d(Config.LOGTAG, "load more messages for " + conversation.getName() + " prior to " + MessageGenerator.getTimestamp(timestamp));
1079		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
1080			return;
1081		}
1082		Runnable runnable = new Runnable() {
1083			@Override
1084			public void run() {
1085				final Account account = conversation.getAccount();
1086				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
1087				if (messages.size() > 0) {
1088					conversation.addAll(0, messages);
1089					checkDeletedFiles(conversation);
1090					callback.onMoreMessagesLoaded(messages.size(), conversation);
1091				} else if (conversation.hasMessagesLeftOnServer()
1092						&& account.isOnlineAndConnected()
1093						&& account.getXmppConnection().getFeatures().mam()) {
1094					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
1095					if (query != null) {
1096						query.setCallback(callback);
1097					}
1098					callback.informUser(R.string.fetching_history_from_server);
1099				}
1100			}
1101		};
1102		mDatabaseExecutor.execute(runnable);
1103	}
1104
1105	public List<Account> getAccounts() {
1106		return this.accounts;
1107	}
1108
1109	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
1110		for (final Conversation conversation : haystack) {
1111			if (conversation.getContact() == contact) {
1112				return conversation;
1113			}
1114		}
1115		return null;
1116	}
1117
1118	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1119		if (jid == null) {
1120			return null;
1121		}
1122		for (final Conversation conversation : haystack) {
1123			if ((account == null || conversation.getAccount() == account)
1124					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1125				return conversation;
1126			}
1127		}
1128		return null;
1129	}
1130
1131	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc) {
1132		return this.findOrCreateConversation(account, jid, muc, null);
1133	}
1134
1135	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final MessageArchiveService.Query query) {
1136		synchronized (this.conversations) {
1137			Conversation conversation = find(account, jid);
1138			if (conversation != null) {
1139				return conversation;
1140			}
1141			conversation = databaseBackend.findConversation(account, jid);
1142			if (conversation != null) {
1143				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1144				conversation.setAccount(account);
1145				if (muc) {
1146					conversation.setMode(Conversation.MODE_MULTI);
1147					conversation.setContactJid(jid);
1148				} else {
1149					conversation.setMode(Conversation.MODE_SINGLE);
1150					conversation.setContactJid(jid.toBareJid());
1151				}
1152				conversation.setNextEncryption(-1);
1153				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1154				this.databaseBackend.updateConversation(conversation);
1155			} else {
1156				String conversationName;
1157				Contact contact = account.getRoster().getContact(jid);
1158				if (contact != null) {
1159					conversationName = contact.getDisplayName();
1160				} else {
1161					conversationName = jid.getLocalpart();
1162				}
1163				if (muc) {
1164					conversation = new Conversation(conversationName, account, jid,
1165							Conversation.MODE_MULTI);
1166				} else {
1167					conversation = new Conversation(conversationName, account, jid.toBareJid(),
1168							Conversation.MODE_SINGLE);
1169				}
1170				this.databaseBackend.createConversation(conversation);
1171			}
1172			if (account.getXmppConnection() != null
1173					&& account.getXmppConnection().getFeatures().mam()
1174					&& !muc) {
1175				if (query == null) {
1176					this.mMessageArchiveService.query(conversation);
1177				} else {
1178					if (query.getConversation() == null) {
1179						this.mMessageArchiveService.query(conversation, query.getStart());
1180					}
1181				}
1182			}
1183			checkDeletedFiles(conversation);
1184			this.conversations.add(conversation);
1185			updateConversationUi();
1186			return conversation;
1187		}
1188	}
1189
1190	public void archiveConversation(Conversation conversation) {
1191		getNotificationService().clear(conversation);
1192		conversation.setStatus(Conversation.STATUS_ARCHIVED);
1193		conversation.setNextEncryption(-1);
1194		synchronized (this.conversations) {
1195			if (conversation.getMode() == Conversation.MODE_MULTI) {
1196				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1197					Bookmark bookmark = conversation.getBookmark();
1198					if (bookmark != null && bookmark.autojoin()) {
1199						bookmark.setAutojoin(false);
1200						pushBookmarks(bookmark.getAccount());
1201					}
1202				}
1203				leaveMuc(conversation);
1204			} else {
1205				conversation.endOtrIfNeeded();
1206			}
1207			this.databaseBackend.updateConversation(conversation);
1208			this.conversations.remove(conversation);
1209			updateConversationUi();
1210		}
1211	}
1212
1213	public void createAccount(final Account account) {
1214		account.initAccountServices(this);
1215		databaseBackend.createAccount(account);
1216		this.accounts.add(account);
1217		this.reconnectAccountInBackground(account);
1218		updateAccountUi();
1219	}
1220
1221	public void updateAccount(final Account account) {
1222		this.statusListener.onStatusChanged(account);
1223		databaseBackend.updateAccount(account);
1224		reconnectAccount(account, false);
1225		updateAccountUi();
1226		getNotificationService().updateErrorNotification();
1227	}
1228
1229	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
1230		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
1231		sendIqPacket(account, iq, new OnIqPacketReceived() {
1232			@Override
1233			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1234				if (packet.getType() == IqPacket.TYPE.RESULT) {
1235					account.setPassword(newPassword);
1236					databaseBackend.updateAccount(account);
1237					callback.onPasswordChangeSucceeded();
1238				} else {
1239					callback.onPasswordChangeFailed();
1240				}
1241			}
1242		});
1243	}
1244
1245	public void deleteAccount(final Account account) {
1246		synchronized (this.conversations) {
1247			for (final Conversation conversation : conversations) {
1248				if (conversation.getAccount() == account) {
1249					if (conversation.getMode() == Conversation.MODE_MULTI) {
1250						leaveMuc(conversation);
1251					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1252						conversation.endOtrIfNeeded();
1253					}
1254					conversations.remove(conversation);
1255				}
1256			}
1257			if (account.getXmppConnection() != null) {
1258				this.disconnect(account, true);
1259			}
1260			databaseBackend.deleteAccount(account);
1261			this.accounts.remove(account);
1262			updateAccountUi();
1263			getNotificationService().updateErrorNotification();
1264		}
1265	}
1266
1267	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1268		synchronized (this) {
1269			if (checkListeners()) {
1270				switchToForeground();
1271			}
1272			this.mOnConversationUpdate = listener;
1273			this.mNotificationService.setIsInForeground(true);
1274			if (this.convChangedListenerCount < 2) {
1275				this.convChangedListenerCount++;
1276			}
1277		}
1278	}
1279
1280	public void removeOnConversationListChangedListener() {
1281		synchronized (this) {
1282			this.convChangedListenerCount--;
1283			if (this.convChangedListenerCount <= 0) {
1284				this.convChangedListenerCount = 0;
1285				this.mOnConversationUpdate = null;
1286				this.mNotificationService.setIsInForeground(false);
1287				if (checkListeners()) {
1288					switchToBackground();
1289				}
1290			}
1291		}
1292	}
1293
1294	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1295		synchronized (this) {
1296			if (checkListeners()) {
1297				switchToForeground();
1298			}
1299			this.mOnAccountUpdate = listener;
1300			if (this.accountChangedListenerCount < 2) {
1301				this.accountChangedListenerCount++;
1302			}
1303		}
1304	}
1305
1306	public void removeOnAccountListChangedListener() {
1307		synchronized (this) {
1308			this.accountChangedListenerCount--;
1309			if (this.accountChangedListenerCount <= 0) {
1310				this.mOnAccountUpdate = null;
1311				this.accountChangedListenerCount = 0;
1312				if (checkListeners()) {
1313					switchToBackground();
1314				}
1315			}
1316		}
1317	}
1318
1319	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
1320		synchronized (this) {
1321			if (checkListeners()) {
1322				switchToForeground();
1323			}
1324			this.mOnRosterUpdate = listener;
1325			if (this.rosterChangedListenerCount < 2) {
1326				this.rosterChangedListenerCount++;
1327			}
1328		}
1329	}
1330
1331	public void removeOnRosterUpdateListener() {
1332		synchronized (this) {
1333			this.rosterChangedListenerCount--;
1334			if (this.rosterChangedListenerCount <= 0) {
1335				this.rosterChangedListenerCount = 0;
1336				this.mOnRosterUpdate = null;
1337				if (checkListeners()) {
1338					switchToBackground();
1339				}
1340			}
1341		}
1342	}
1343
1344	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
1345		synchronized (this) {
1346			if (checkListeners()) {
1347				switchToForeground();
1348			}
1349			this.mOnUpdateBlocklist = listener;
1350			if (this.updateBlocklistListenerCount < 2) {
1351				this.updateBlocklistListenerCount++;
1352			}
1353		}
1354	}
1355
1356	public void removeOnUpdateBlocklistListener() {
1357		synchronized (this) {
1358			this.updateBlocklistListenerCount--;
1359			if (this.updateBlocklistListenerCount <= 0) {
1360				this.updateBlocklistListenerCount = 0;
1361				this.mOnUpdateBlocklist = null;
1362				if (checkListeners()) {
1363					switchToBackground();
1364				}
1365			}
1366		}
1367	}
1368
1369	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1370		synchronized (this) {
1371			if (checkListeners()) {
1372				switchToForeground();
1373			}
1374			this.mOnMucRosterUpdate = listener;
1375			if (this.mucRosterChangedListenerCount < 2) {
1376				this.mucRosterChangedListenerCount++;
1377			}
1378		}
1379	}
1380
1381	public void removeOnMucRosterUpdateListener() {
1382		synchronized (this) {
1383			this.mucRosterChangedListenerCount--;
1384			if (this.mucRosterChangedListenerCount <= 0) {
1385				this.mucRosterChangedListenerCount = 0;
1386				this.mOnMucRosterUpdate = null;
1387				if (checkListeners()) {
1388					switchToBackground();
1389				}
1390			}
1391		}
1392	}
1393
1394	private boolean checkListeners() {
1395		return (this.mOnAccountUpdate == null
1396				&& this.mOnConversationUpdate == null
1397				&& this.mOnRosterUpdate == null
1398				&& this.mOnUpdateBlocklist == null);
1399	}
1400
1401	private void switchToForeground() {
1402		for (Account account : getAccounts()) {
1403			if (account.getStatus() == Account.State.ONLINE) {
1404				XmppConnection connection = account.getXmppConnection();
1405				if (connection != null && connection.getFeatures().csi()) {
1406					connection.sendActive();
1407				}
1408			}
1409		}
1410		Log.d(Config.LOGTAG, "app switched into foreground");
1411	}
1412
1413	private void switchToBackground() {
1414		for (Account account : getAccounts()) {
1415			if (account.getStatus() == Account.State.ONLINE) {
1416				XmppConnection connection = account.getXmppConnection();
1417				if (connection != null && connection.getFeatures().csi()) {
1418					connection.sendInactive();
1419				}
1420			}
1421		}
1422		for(Conversation conversation : getConversations()) {
1423			conversation.setIncomingChatState(ChatState.ACTIVE);
1424		}
1425		this.mNotificationService.setIsInForeground(false);
1426		Log.d(Config.LOGTAG, "app switched into background");
1427	}
1428
1429	private void connectMultiModeConversations(Account account) {
1430		List<Conversation> conversations = getConversations();
1431		for (Conversation conversation : conversations) {
1432			if ((conversation.getMode() == Conversation.MODE_MULTI)
1433					&& (conversation.getAccount() == account)) {
1434				conversation.resetMucOptions();
1435				joinMuc(conversation);
1436			}
1437		}
1438	}
1439
1440	public void joinMuc(Conversation conversation) {
1441		Account account = conversation.getAccount();
1442		account.pendingConferenceJoins.remove(conversation);
1443		account.pendingConferenceLeaves.remove(conversation);
1444		if (account.getStatus() == Account.State.ONLINE) {
1445			final String nick = conversation.getMucOptions().getProposedNick();
1446			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1447			if (joinJid == null) {
1448				return; //safety net
1449			}
1450			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1451			PresencePacket packet = new PresencePacket();
1452			packet.setFrom(conversation.getAccount().getJid());
1453			packet.setTo(joinJid);
1454			Element x = packet.addChild("x", "http://jabber.org/protocol/muc");
1455			if (conversation.getMucOptions().getPassword() != null) {
1456				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1457			}
1458			x.addChild("history").setAttribute("since", PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1459			String sig = account.getPgpSignature();
1460			if (sig != null) {
1461				packet.addChild("status").setContent("online");
1462				packet.addChild("x", "jabber:x:signed").setContent(sig);
1463			}
1464			sendPresencePacket(account, packet);
1465			fetchConferenceConfiguration(conversation);
1466			if (!joinJid.equals(conversation.getJid())) {
1467				conversation.setContactJid(joinJid);
1468				databaseBackend.updateConversation(conversation);
1469			}
1470			conversation.setHasMessagesLeftOnServer(false);
1471		} else {
1472			account.pendingConferenceJoins.add(conversation);
1473		}
1474	}
1475
1476	public void providePasswordForMuc(Conversation conversation, String password) {
1477		if (conversation.getMode() == Conversation.MODE_MULTI) {
1478			conversation.getMucOptions().setPassword(password);
1479			if (conversation.getBookmark() != null) {
1480				conversation.getBookmark().setAutojoin(true);
1481				pushBookmarks(conversation.getAccount());
1482			}
1483			databaseBackend.updateConversation(conversation);
1484			joinMuc(conversation);
1485		}
1486	}
1487
1488	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1489		final MucOptions options = conversation.getMucOptions();
1490		final Jid joinJid = options.createJoinJid(nick);
1491		if (options.online()) {
1492			Account account = conversation.getAccount();
1493			options.setOnRenameListener(new OnRenameListener() {
1494
1495				@Override
1496				public void onSuccess() {
1497					conversation.setContactJid(joinJid);
1498					databaseBackend.updateConversation(conversation);
1499					Bookmark bookmark = conversation.getBookmark();
1500					if (bookmark != null) {
1501						bookmark.setNick(nick);
1502						pushBookmarks(bookmark.getAccount());
1503					}
1504					callback.success(conversation);
1505				}
1506
1507				@Override
1508				public void onFailure() {
1509					callback.error(R.string.nick_in_use, conversation);
1510				}
1511			});
1512
1513			PresencePacket packet = new PresencePacket();
1514			packet.setTo(joinJid);
1515			packet.setFrom(conversation.getAccount().getJid());
1516
1517			String sig = account.getPgpSignature();
1518			if (sig != null) {
1519				packet.addChild("status").setContent("online");
1520				packet.addChild("x", "jabber:x:signed").setContent(sig);
1521			}
1522			sendPresencePacket(account, packet);
1523		} else {
1524			conversation.setContactJid(joinJid);
1525			databaseBackend.updateConversation(conversation);
1526			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1527				Bookmark bookmark = conversation.getBookmark();
1528				if (bookmark != null) {
1529					bookmark.setNick(nick);
1530					pushBookmarks(bookmark.getAccount());
1531				}
1532				joinMuc(conversation);
1533			}
1534		}
1535	}
1536
1537	public void leaveMuc(Conversation conversation) {
1538		Account account = conversation.getAccount();
1539		account.pendingConferenceJoins.remove(conversation);
1540		account.pendingConferenceLeaves.remove(conversation);
1541		if (account.getStatus() == Account.State.ONLINE) {
1542			PresencePacket packet = new PresencePacket();
1543			packet.setTo(conversation.getJid());
1544			packet.setFrom(conversation.getAccount().getJid());
1545			packet.setAttribute("type", "unavailable");
1546			sendPresencePacket(conversation.getAccount(), packet);
1547			conversation.getMucOptions().setOffline();
1548			conversation.deregisterWithBookmark();
1549			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1550					+ ": leaving muc " + conversation.getJid());
1551		} else {
1552			account.pendingConferenceLeaves.add(conversation);
1553		}
1554	}
1555
1556	private String findConferenceServer(final Account account) {
1557		String server;
1558		if (account.getXmppConnection() != null) {
1559			server = account.getXmppConnection().getMucServer();
1560			if (server != null) {
1561				return server;
1562			}
1563		}
1564		for (Account other : getAccounts()) {
1565			if (other != account && other.getXmppConnection() != null) {
1566				server = other.getXmppConnection().getMucServer();
1567				if (server != null) {
1568					return server;
1569				}
1570			}
1571		}
1572		return null;
1573	}
1574
1575	public void createAdhocConference(final Account account, final Iterable<Jid> jids, final UiCallback<Conversation> callback) {
1576		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
1577		if (account.getStatus() == Account.State.ONLINE) {
1578			try {
1579				String server = findConferenceServer(account);
1580				if (server == null) {
1581					if (callback != null) {
1582						callback.error(R.string.no_conference_server_found, null);
1583					}
1584					return;
1585				}
1586				String name = new BigInteger(75, getRNG()).toString(32);
1587				Jid jid = Jid.fromParts(name, server, null);
1588				final Conversation conversation = findOrCreateConversation(account, jid, true);
1589				joinMuc(conversation);
1590				Bundle options = new Bundle();
1591				options.putString("muc#roomconfig_persistentroom", "1");
1592				options.putString("muc#roomconfig_membersonly", "1");
1593				options.putString("muc#roomconfig_publicroom", "0");
1594				options.putString("muc#roomconfig_whois", "anyone");
1595				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1596					@Override
1597					public void onPushSucceeded() {
1598						for (Jid invite : jids) {
1599							invite(conversation, invite);
1600						}
1601						if (account.countPresences() > 1) {
1602							directInvite(conversation, account.getJid().toBareJid());
1603						}
1604						if (callback != null) {
1605							callback.success(conversation);
1606						}
1607					}
1608
1609					@Override
1610					public void onPushFailed() {
1611						if (callback != null) {
1612							callback.error(R.string.conference_creation_failed, conversation);
1613						}
1614					}
1615				});
1616
1617			} catch (InvalidJidException e) {
1618				if (callback != null) {
1619					callback.error(R.string.conference_creation_failed, null);
1620				}
1621			}
1622		} else {
1623			if (callback != null) {
1624				callback.error(R.string.not_connected_try_again, null);
1625			}
1626		}
1627	}
1628
1629	public void fetchConferenceConfiguration(final Conversation conversation) {
1630		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1631		request.setTo(conversation.getJid().toBareJid());
1632		request.query("http://jabber.org/protocol/disco#info");
1633		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
1634			@Override
1635			public void onIqPacketReceived(Account account, IqPacket packet) {
1636				if (packet.getType() != IqPacket.TYPE.ERROR) {
1637					ArrayList<String> features = new ArrayList<>();
1638					for (Element child : packet.query().getChildren()) {
1639						if (child != null && child.getName().equals("feature")) {
1640							String var = child.getAttribute("var");
1641							if (var != null) {
1642								features.add(var);
1643							}
1644						}
1645					}
1646					conversation.getMucOptions().updateFeatures(features);
1647					updateConversationUi();
1648				}
1649			}
1650		});
1651	}
1652
1653	public void pushConferenceConfiguration(final Conversation conversation, final Bundle options, final OnConferenceOptionsPushed callback) {
1654		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1655		request.setTo(conversation.getJid().toBareJid());
1656		request.query("http://jabber.org/protocol/muc#owner");
1657		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
1658			@Override
1659			public void onIqPacketReceived(Account account, IqPacket packet) {
1660				if (packet.getType() != IqPacket.TYPE.ERROR) {
1661					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1662					for (Field field : data.getFields()) {
1663						if (options.containsKey(field.getName())) {
1664							field.setValue(options.getString(field.getName()));
1665						}
1666					}
1667					data.submit();
1668					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
1669					set.setTo(conversation.getJid().toBareJid());
1670					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1671					sendIqPacket(account, set, new OnIqPacketReceived() {
1672						@Override
1673						public void onIqPacketReceived(Account account, IqPacket packet) {
1674							if (packet.getType() == IqPacket.TYPE.RESULT) {
1675								if (callback != null) {
1676									callback.onPushSucceeded();
1677								}
1678							} else {
1679								if (callback != null) {
1680									callback.onPushFailed();
1681								}
1682							}
1683						}
1684					});
1685				} else {
1686					if (callback != null) {
1687						callback.onPushFailed();
1688					}
1689				}
1690			}
1691		});
1692	}
1693
1694	public void pushSubjectToConference(final Conversation conference, final String subject) {
1695		MessagePacket packet = this.getMessageGenerator().conferenceSubject(conference, subject);
1696		this.sendMessagePacket(conference.getAccount(), packet);
1697		final MucOptions mucOptions = conference.getMucOptions();
1698		final MucOptions.User self = mucOptions.getSelf();
1699		if (!mucOptions.persistent() && self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
1700			Bundle options = new Bundle();
1701			options.putString("muc#roomconfig_persistentroom", "1");
1702			this.pushConferenceConfiguration(conference, options, null);
1703		}
1704	}
1705
1706	public void changeAffiliationInConference(final Conversation conference, Jid user, MucOptions.Affiliation affiliation, final OnAffiliationChanged callback) {
1707		final Jid jid = user.toBareJid();
1708		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jid, affiliation.toString());
1709		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
1710			@Override
1711			public void onIqPacketReceived(Account account, IqPacket packet) {
1712				if (packet.getType() == IqPacket.TYPE.RESULT) {
1713					callback.onAffiliationChangedSuccessful(jid);
1714				} else {
1715					callback.onAffiliationChangeFailed(jid, R.string.could_not_change_affiliation);
1716				}
1717			}
1718		});
1719	}
1720
1721	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
1722		List<Jid> jids = new ArrayList<>();
1723		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
1724			if (user.getAffiliation() == before) {
1725				jids.add(user.getJid());
1726			}
1727		}
1728		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jids, after.toString());
1729		sendIqPacket(conference.getAccount(), request, mDefaultIqHandler);
1730	}
1731
1732	public void changeRoleInConference(final Conversation conference, final String nick, MucOptions.Role role, final OnRoleChanged callback) {
1733		IqPacket request = this.mIqGenerator.changeRole(conference, nick, role.toString());
1734		Log.d(Config.LOGTAG, request.toString());
1735		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
1736			@Override
1737			public void onIqPacketReceived(Account account, IqPacket packet) {
1738				Log.d(Config.LOGTAG, packet.toString());
1739				if (packet.getType() == IqPacket.TYPE.RESULT) {
1740					callback.onRoleChangedSuccessful(nick);
1741				} else {
1742					callback.onRoleChangeFailed(nick, R.string.could_not_change_role);
1743				}
1744			}
1745		});
1746	}
1747
1748	public void disconnect(Account account, boolean force) {
1749		if ((account.getStatus() == Account.State.ONLINE)
1750				|| (account.getStatus() == Account.State.DISABLED)) {
1751			if (!force) {
1752				List<Conversation> conversations = getConversations();
1753				for (Conversation conversation : conversations) {
1754					if (conversation.getAccount() == account) {
1755						if (conversation.getMode() == Conversation.MODE_MULTI) {
1756							leaveMuc(conversation);
1757						} else {
1758							if (conversation.endOtrIfNeeded()) {
1759								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1760										+ ": ended otr session with "
1761										+ conversation.getJid());
1762							}
1763						}
1764					}
1765				}
1766				sendOfflinePresence(account);
1767			}
1768			account.getXmppConnection().disconnect(force);
1769		}
1770	}
1771
1772	@Override
1773	public IBinder onBind(Intent intent) {
1774		return mBinder;
1775	}
1776
1777	public void updateMessage(Message message) {
1778		databaseBackend.updateMessage(message);
1779		updateConversationUi();
1780	}
1781
1782	protected void syncDirtyContacts(Account account) {
1783		for (Contact contact : account.getRoster().getContacts()) {
1784			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1785				pushContactToServer(contact);
1786			}
1787			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1788				deleteContactOnServer(contact);
1789			}
1790		}
1791	}
1792
1793	public void createContact(Contact contact) {
1794		SharedPreferences sharedPref = getPreferences();
1795		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1796		if (autoGrant) {
1797			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1798			contact.setOption(Contact.Options.ASKING);
1799		}
1800		pushContactToServer(contact);
1801	}
1802
1803	public void onOtrSessionEstablished(Conversation conversation) {
1804		final Account account = conversation.getAccount();
1805		final Session otrSession = conversation.getOtrSession();
1806		Log.d(Config.LOGTAG,
1807				account.getJid().toBareJid() + " otr session established with "
1808						+ conversation.getJid() + "/"
1809						+ otrSession.getSessionID().getUserID());
1810		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1811
1812			@Override
1813			public void onMessageFound(Message message) {
1814				SessionID id = otrSession.getSessionID();
1815				try {
1816					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1817				} catch (InvalidJidException e) {
1818					return;
1819				}
1820				if (message.needsUploading()) {
1821					mJingleConnectionManager.createNewConnection(message);
1822				} else {
1823					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1824					if (outPacket != null) {
1825						message.setStatus(Message.STATUS_SEND);
1826						databaseBackend.updateMessage(message);
1827						sendMessagePacket(account, outPacket);
1828					}
1829				}
1830				updateConversationUi();
1831			}
1832		});
1833	}
1834
1835	public boolean renewSymmetricKey(Conversation conversation) {
1836		Account account = conversation.getAccount();
1837		byte[] symmetricKey = new byte[32];
1838		this.mRandom.nextBytes(symmetricKey);
1839		Session otrSession = conversation.getOtrSession();
1840		if (otrSession != null) {
1841			MessagePacket packet = new MessagePacket();
1842			packet.setType(MessagePacket.TYPE_CHAT);
1843			packet.setFrom(account.getJid());
1844			packet.addChild("private", "urn:xmpp:carbons:2");
1845			packet.addChild("no-copy", "urn:xmpp:hints");
1846			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1847					+ otrSession.getSessionID().getUserID());
1848			try {
1849				packet.setBody(otrSession
1850						.transformSending(CryptoHelper.FILETRANSFER
1851								+ CryptoHelper.bytesToHex(symmetricKey))[0]);
1852				sendMessagePacket(account, packet);
1853				conversation.setSymmetricKey(symmetricKey);
1854				return true;
1855			} catch (OtrException e) {
1856				return false;
1857			}
1858		}
1859		return false;
1860	}
1861
1862	public void pushContactToServer(final Contact contact) {
1863		contact.resetOption(Contact.Options.DIRTY_DELETE);
1864		contact.setOption(Contact.Options.DIRTY_PUSH);
1865		final Account account = contact.getAccount();
1866		if (account.getStatus() == Account.State.ONLINE) {
1867			final boolean ask = contact.getOption(Contact.Options.ASKING);
1868			final boolean sendUpdates = contact
1869					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1870					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1871			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1872			iq.query(Xmlns.ROSTER).addChild(contact.asElement());
1873			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
1874			if (sendUpdates) {
1875				sendPresencePacket(account,
1876						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1877			}
1878			if (ask) {
1879				sendPresencePacket(account,
1880						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1881			}
1882		}
1883	}
1884
1885	public void publishAvatar(final Account account,
1886							  final Uri image,
1887							  final UiCallback<Avatar> callback) {
1888		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1889		final int size = Config.AVATAR_SIZE;
1890		final Avatar avatar = getFileBackend()
1891				.getPepAvatar(image, size, format);
1892		if (avatar != null) {
1893			avatar.height = size;
1894			avatar.width = size;
1895			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1896				avatar.type = "image/webp";
1897			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1898				avatar.type = "image/jpeg";
1899			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1900				avatar.type = "image/png";
1901			}
1902			if (!getFileBackend().save(avatar)) {
1903				callback.error(R.string.error_saving_avatar, avatar);
1904				return;
1905			}
1906			final IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1907			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1908
1909				@Override
1910				public void onIqPacketReceived(Account account, IqPacket result) {
1911					if (result.getType() == IqPacket.TYPE.RESULT) {
1912						final IqPacket packet = XmppConnectionService.this.mIqGenerator
1913								.publishAvatarMetadata(avatar);
1914						sendIqPacket(account, packet, new OnIqPacketReceived() {
1915
1916							@Override
1917							public void onIqPacketReceived(Account account,
1918														   IqPacket result) {
1919								if (result.getType() == IqPacket.TYPE.RESULT) {
1920									if (account.setAvatar(avatar.getFilename())) {
1921										getAvatarService().clear(account);
1922										databaseBackend.updateAccount(account);
1923									}
1924									callback.success(avatar);
1925								} else {
1926									callback.error(
1927											R.string.error_publish_avatar_server_reject,
1928											avatar);
1929								}
1930							}
1931						});
1932					} else {
1933						callback.error(
1934								R.string.error_publish_avatar_server_reject,
1935								avatar);
1936					}
1937				}
1938			});
1939		} else {
1940			callback.error(R.string.error_publish_avatar_converting, null);
1941		}
1942	}
1943
1944	public void fetchAvatar(Account account, Avatar avatar) {
1945		fetchAvatar(account, avatar, null);
1946	}
1947
1948	private static String generateFetchKey(Account account, final Avatar avatar) {
1949		return account.getJid().toBareJid()+"_"+avatar.owner+"_"+avatar.sha1sum;
1950	}
1951
1952	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
1953		final String KEY = generateFetchKey(account, avatar);
1954		synchronized(this.mInProgressAvatarFetches) {
1955			if (this.mInProgressAvatarFetches.contains(KEY)) {
1956				return;
1957			} else {
1958				switch (avatar.origin) {
1959					case PEP:
1960						this.mInProgressAvatarFetches.add(KEY);
1961						fetchAvatarPep(account, avatar, callback);
1962						break;
1963					case VCARD:
1964						this.mInProgressAvatarFetches.add(KEY);
1965						fetchAvatarVcard(account, avatar, callback);
1966						break;
1967				}
1968			}
1969		}
1970	}
1971
1972	private void fetchAvatarPep(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
1973		IqPacket packet = this.mIqGenerator.retrievePepAvatar(avatar);
1974		sendIqPacket(account, packet, new OnIqPacketReceived() {
1975
1976			@Override
1977			public void onIqPacketReceived(Account account, IqPacket result) {
1978				synchronized (mInProgressAvatarFetches) {
1979					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
1980				}
1981				final String ERROR = account.getJid().toBareJid()
1982						+ ": fetching avatar for " + avatar.owner + " failed ";
1983				if (result.getType() == IqPacket.TYPE.RESULT) {
1984					avatar.image = mIqParser.avatarData(result);
1985					if (avatar.image != null) {
1986						if (getFileBackend().save(avatar)) {
1987							if (account.getJid().toBareJid().equals(avatar.owner)) {
1988								if (account.setAvatar(avatar.getFilename())) {
1989									databaseBackend.updateAccount(account);
1990								}
1991								getAvatarService().clear(account);
1992								updateConversationUi();
1993								updateAccountUi();
1994							} else {
1995								Contact contact = account.getRoster()
1996										.getContact(avatar.owner);
1997								contact.setAvatar(avatar);
1998								getAvatarService().clear(contact);
1999								updateConversationUi();
2000								updateRosterUi();
2001							}
2002							if (callback != null) {
2003								callback.success(avatar);
2004							}
2005							Log.d(Config.LOGTAG, account.getJid().toBareJid()
2006									+ ": succesfuly fetched pep avatar for " + avatar.owner);
2007							return;
2008						}
2009					} else {
2010
2011						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
2012					}
2013				} else {
2014					Element error = result.findChild("error");
2015					if (error == null) {
2016						Log.d(Config.LOGTAG, ERROR + "(server error)");
2017					} else {
2018						Log.d(Config.LOGTAG, ERROR + error.toString());
2019					}
2020				}
2021				if (callback != null) {
2022					callback.error(0, null);
2023				}
2024
2025			}
2026		});
2027	}
2028
2029	private void fetchAvatarVcard(final Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2030		IqPacket packet = this.mIqGenerator.retrieveVcardAvatar(avatar);
2031		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2032			@Override
2033			public void onIqPacketReceived(Account account, IqPacket packet) {
2034				synchronized (mInProgressAvatarFetches) {
2035					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
2036				}
2037				if (packet.getType() == IqPacket.TYPE.RESULT) {
2038					Element vCard = packet.findChild("vCard", "vcard-temp");
2039					Element photo = vCard != null ? vCard.findChild("PHOTO") : null;
2040					String image = photo != null ? photo.findChildContent("BINVAL") : null;
2041					if (image != null) {
2042						avatar.image = image;
2043						if (getFileBackend().save(avatar)) {
2044							Log.d(Config.LOGTAG, account.getJid().toBareJid()
2045									+ ": successfully fetched vCard avatar for " + avatar.owner);
2046							Contact contact = account.getRoster()
2047									.getContact(avatar.owner);
2048							contact.setAvatar(avatar);
2049							getAvatarService().clear(contact);
2050							updateConversationUi();
2051							updateRosterUi();
2052						}
2053					}
2054				}
2055			}
2056		});
2057	}
2058
2059	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
2060		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
2061		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2062
2063			@Override
2064			public void onIqPacketReceived(Account account, IqPacket packet) {
2065				if (packet.getType() == IqPacket.TYPE.RESULT) {
2066					Element pubsub = packet.findChild("pubsub",
2067							"http://jabber.org/protocol/pubsub");
2068					if (pubsub != null) {
2069						Element items = pubsub.findChild("items");
2070						if (items != null) {
2071							Avatar avatar = Avatar.parseMetadata(items);
2072							if (avatar != null) {
2073								avatar.owner = account.getJid().toBareJid();
2074								if (fileBackend.isAvatarCached(avatar)) {
2075									if (account.setAvatar(avatar.getFilename())) {
2076										databaseBackend.updateAccount(account);
2077									}
2078									getAvatarService().clear(account);
2079									callback.success(avatar);
2080								} else {
2081									fetchAvatarPep(account, avatar, callback);
2082								}
2083								return;
2084							}
2085						}
2086					}
2087				}
2088				callback.error(0, null);
2089			}
2090		});
2091	}
2092
2093	public void deleteContactOnServer(Contact contact) {
2094		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
2095		contact.resetOption(Contact.Options.DIRTY_PUSH);
2096		contact.setOption(Contact.Options.DIRTY_DELETE);
2097		Account account = contact.getAccount();
2098		if (account.getStatus() == Account.State.ONLINE) {
2099			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2100			Element item = iq.query(Xmlns.ROSTER).addChild("item");
2101			item.setAttribute("jid", contact.getJid().toString());
2102			item.setAttribute("subscription", "remove");
2103			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
2104		}
2105	}
2106
2107	public void updateConversation(Conversation conversation) {
2108		this.databaseBackend.updateConversation(conversation);
2109	}
2110
2111	public void reconnectAccount(final Account account, final boolean force) {
2112		synchronized (account) {
2113			if (account.getXmppConnection() != null) {
2114				disconnect(account, force);
2115			}
2116			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2117
2118				synchronized (this.mInProgressAvatarFetches) {
2119					for(Iterator<String> iterator = this.mInProgressAvatarFetches.iterator(); iterator.hasNext();) {
2120						final String KEY = iterator.next();
2121						if (KEY.startsWith(account.getJid().toBareJid()+"_")) {
2122							iterator.remove();
2123						}
2124					}
2125				}
2126
2127				if (account.getXmppConnection() == null) {
2128					account.setXmppConnection(createConnection(account));
2129				}
2130				Thread thread = new Thread(account.getXmppConnection());
2131				thread.start();
2132				scheduleWakeUpCall(Config.CONNECT_TIMEOUT, account.getUuid().hashCode());
2133			} else {
2134				account.getRoster().clearPresences();
2135				account.setXmppConnection(null);
2136			}
2137		}
2138	}
2139
2140	public void reconnectAccountInBackground(final Account account) {
2141		new Thread(new Runnable() {
2142			@Override
2143			public void run() {
2144				reconnectAccount(account,false);
2145			}
2146		}).start();
2147	}
2148
2149	public void invite(Conversation conversation, Jid contact) {
2150		Log.d(Config.LOGTAG,conversation.getAccount().getJid().toBareJid()+": inviting "+contact+" to "+conversation.getJid().toBareJid());
2151		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
2152		sendMessagePacket(conversation.getAccount(), packet);
2153	}
2154
2155	public void directInvite(Conversation conversation, Jid jid) {
2156		MessagePacket packet = mMessageGenerator.directInvite(conversation, jid);
2157		sendMessagePacket(conversation.getAccount(),packet);
2158	}
2159
2160	public void resetSendingToWaiting(Account account) {
2161		for (Conversation conversation : getConversations()) {
2162			if (conversation.getAccount() == account) {
2163				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
2164
2165					@Override
2166					public void onMessageFound(Message message) {
2167						markMessage(message, Message.STATUS_WAITING);
2168					}
2169				});
2170			}
2171		}
2172	}
2173
2174	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status) {
2175		if (uuid == null) {
2176			return null;
2177		}
2178		for (Conversation conversation : getConversations()) {
2179			if (conversation.getJid().toBareJid().equals(recipient) && conversation.getAccount() == account) {
2180				final Message message = conversation.findSentMessageWithUuid(uuid);
2181				if (message != null) {
2182					markMessage(message, status);
2183				}
2184				return message;
2185			}
2186		}
2187		return null;
2188	}
2189
2190	public boolean markMessage(Conversation conversation, String uuid,
2191							   int status) {
2192		if (uuid == null) {
2193			return false;
2194		} else {
2195			Message message = conversation.findSentMessageWithUuid(uuid);
2196			if (message != null) {
2197				markMessage(message, status);
2198				return true;
2199			} else {
2200				return false;
2201			}
2202		}
2203	}
2204
2205	public void markMessage(Message message, int status) {
2206		if (status == Message.STATUS_SEND_FAILED
2207				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
2208				.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
2209			return;
2210		}
2211		message.setStatus(status);
2212		databaseBackend.updateMessage(message);
2213		updateConversationUi();
2214	}
2215
2216	public SharedPreferences getPreferences() {
2217		return PreferenceManager
2218				.getDefaultSharedPreferences(getApplicationContext());
2219	}
2220
2221	public boolean forceEncryption() {
2222		return getPreferences().getBoolean("force_encryption", false);
2223	}
2224
2225	public boolean confirmMessages() {
2226		return getPreferences().getBoolean("confirm_messages", true);
2227	}
2228
2229	public boolean sendChatStates() {
2230		return getPreferences().getBoolean("chat_states", false);
2231	}
2232
2233	public boolean saveEncryptedMessages() {
2234		return !getPreferences().getBoolean("dont_save_encrypted", false);
2235	}
2236
2237	public boolean indicateReceived() {
2238		return getPreferences().getBoolean("indicate_received", false);
2239	}
2240
2241	public int unreadCount() {
2242		int count = 0;
2243		for(Conversation conversation : getConversations()) {
2244			count += conversation.unreadCount();
2245		}
2246		return count;
2247	}
2248
2249	public void updateConversationUi() {
2250		if (mOnConversationUpdate != null) {
2251			mOnConversationUpdate.onConversationUpdate();
2252		}
2253	}
2254
2255	public void updateAccountUi() {
2256		if (mOnAccountUpdate != null) {
2257			mOnAccountUpdate.onAccountUpdate();
2258		}
2259	}
2260
2261	public void updateRosterUi() {
2262		if (mOnRosterUpdate != null) {
2263			mOnRosterUpdate.onRosterUpdate();
2264		}
2265	}
2266
2267	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
2268		if (mOnUpdateBlocklist != null) {
2269			mOnUpdateBlocklist.OnUpdateBlocklist(status);
2270		}
2271	}
2272
2273	public void updateMucRosterUi() {
2274		if (mOnMucRosterUpdate != null) {
2275			mOnMucRosterUpdate.onMucRosterUpdate();
2276		}
2277	}
2278
2279	public Account findAccountByJid(final Jid accountJid) {
2280		for (Account account : this.accounts) {
2281			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
2282				return account;
2283			}
2284		}
2285		return null;
2286	}
2287
2288	public Conversation findConversationByUuid(String uuid) {
2289		for (Conversation conversation : getConversations()) {
2290			if (conversation.getUuid().equals(uuid)) {
2291				return conversation;
2292			}
2293		}
2294		return null;
2295	}
2296
2297	public void markRead(final Conversation conversation) {
2298		mNotificationService.clear(conversation);
2299		conversation.markRead();
2300		updateUnreadCountBadge();
2301	}
2302
2303	public synchronized void updateUnreadCountBadge() {
2304		int count = unreadCount();
2305		if (unreadCount != count) {
2306			Log.d(Config.LOGTAG, "update unread count to " + count);
2307			if (count > 0) {
2308				ShortcutBadger.with(getApplicationContext()).count(count);
2309			} else {
2310				ShortcutBadger.with(getApplicationContext()).remove();
2311			}
2312			unreadCount = count;
2313		}
2314	}
2315
2316	public void sendReadMarker(final Conversation conversation) {
2317		final Message markable = conversation.getLatestMarkableMessage();
2318		this.markRead(conversation);
2319		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null) {
2320			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": sending read marker to " + markable.getCounterpart().toString());
2321			Account account = conversation.getAccount();
2322			final Jid to = markable.getCounterpart();
2323			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
2324			this.sendMessagePacket(conversation.getAccount(), packet);
2325		}
2326		updateConversationUi();
2327	}
2328
2329	public SecureRandom getRNG() {
2330		return this.mRandom;
2331	}
2332
2333	public MemorizingTrustManager getMemorizingTrustManager() {
2334		return this.mMemorizingTrustManager;
2335	}
2336
2337	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
2338		this.mMemorizingTrustManager = trustManager;
2339	}
2340
2341	public void updateMemorizingTrustmanager() {
2342		final MemorizingTrustManager tm;
2343		final boolean dontTrustSystemCAs = getPreferences().getBoolean("dont_trust_system_cas", false);
2344		if (dontTrustSystemCAs) {
2345			 tm = new MemorizingTrustManager(getApplicationContext(), null);
2346		} else {
2347			tm = new MemorizingTrustManager(getApplicationContext());
2348		}
2349		setMemorizingTrustManager(tm);
2350	}
2351
2352	public PowerManager getPowerManager() {
2353		return this.pm;
2354	}
2355
2356	public LruCache<String, Bitmap> getBitmapCache() {
2357		return this.mBitmapCache;
2358	}
2359
2360	public void syncRosterToDisk(final Account account) {
2361		Runnable runnable = new Runnable() {
2362
2363			@Override
2364			public void run() {
2365				databaseBackend.writeRoster(account.getRoster());
2366			}
2367		};
2368		mDatabaseExecutor.execute(runnable);
2369
2370	}
2371
2372	public List<String> getKnownHosts() {
2373		final List<String> hosts = new ArrayList<>();
2374		for (final Account account : getAccounts()) {
2375			if (!hosts.contains(account.getServer().toString())) {
2376				hosts.add(account.getServer().toString());
2377			}
2378			for (final Contact contact : account.getRoster().getContacts()) {
2379				if (contact.showInRoster()) {
2380					final String server = contact.getServer().toString();
2381					if (server != null && !hosts.contains(server)) {
2382						hosts.add(server);
2383					}
2384				}
2385			}
2386		}
2387		return hosts;
2388	}
2389
2390	public List<String> getKnownConferenceHosts() {
2391		final ArrayList<String> mucServers = new ArrayList<>();
2392		for (final Account account : accounts) {
2393			if (account.getXmppConnection() != null) {
2394				final String server = account.getXmppConnection().getMucServer();
2395				if (server != null && !mucServers.contains(server)) {
2396					mucServers.add(server);
2397				}
2398			}
2399		}
2400		return mucServers;
2401	}
2402
2403	public void sendMessagePacket(Account account, MessagePacket packet) {
2404		XmppConnection connection = account.getXmppConnection();
2405		if (connection != null) {
2406			connection.sendMessagePacket(packet);
2407		}
2408	}
2409
2410	public void sendPresencePacket(Account account, PresencePacket packet) {
2411		XmppConnection connection = account.getXmppConnection();
2412		if (connection != null) {
2413			connection.sendPresencePacket(packet);
2414		}
2415	}
2416
2417	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
2418		final XmppConnection connection = account.getXmppConnection();
2419		if (connection != null) {
2420			connection.sendIqPacket(packet, callback);
2421		}
2422	}
2423
2424	public void sendPresence(final Account account) {
2425		sendPresencePacket(account, mPresenceGenerator.sendPresence(account));
2426	}
2427
2428	public void sendOfflinePresence(final Account account) {
2429		sendPresencePacket(account, mPresenceGenerator.sendOfflinePresence(account));
2430	}
2431
2432	public MessageGenerator getMessageGenerator() {
2433		return this.mMessageGenerator;
2434	}
2435
2436	public PresenceGenerator getPresenceGenerator() {
2437		return this.mPresenceGenerator;
2438	}
2439
2440	public IqGenerator getIqGenerator() {
2441		return this.mIqGenerator;
2442	}
2443
2444	public IqParser getIqParser() {
2445		return this.mIqParser;
2446	}
2447
2448	public JingleConnectionManager getJingleConnectionManager() {
2449		return this.mJingleConnectionManager;
2450	}
2451
2452	public MessageArchiveService getMessageArchiveService() {
2453		return this.mMessageArchiveService;
2454	}
2455
2456	public List<Contact> findContacts(Jid jid) {
2457		ArrayList<Contact> contacts = new ArrayList<>();
2458		for (Account account : getAccounts()) {
2459			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2460				Contact contact = account.getRoster().getContactFromRoster(jid);
2461				if (contact != null) {
2462					contacts.add(contact);
2463				}
2464			}
2465		}
2466		return contacts;
2467	}
2468
2469	public NotificationService getNotificationService() {
2470		return this.mNotificationService;
2471	}
2472
2473	public HttpConnectionManager getHttpConnectionManager() {
2474		return this.mHttpConnectionManager;
2475	}
2476
2477	public void resendFailedMessages(final Message message) {
2478		final Collection<Message> messages = new ArrayList<>();
2479		Message current = message;
2480		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2481			messages.add(current);
2482			if (current.mergeable(current.next())) {
2483				current = current.next();
2484			} else {
2485				break;
2486			}
2487		}
2488		for (final Message msg : messages) {
2489			markMessage(msg, Message.STATUS_WAITING);
2490			this.resendMessage(msg);
2491		}
2492	}
2493
2494	public void clearConversationHistory(final Conversation conversation) {
2495		conversation.clearMessages();
2496		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
2497		new Thread(new Runnable() {
2498			@Override
2499			public void run() {
2500				databaseBackend.deleteMessagesInConversation(conversation);
2501			}
2502		}).start();
2503	}
2504
2505	public void sendBlockRequest(final Blockable blockable) {
2506		if (blockable != null && blockable.getBlockedJid() != null) {
2507			final Jid jid = blockable.getBlockedJid();
2508			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid), new OnIqPacketReceived() {
2509
2510				@Override
2511				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2512					if (packet.getType() == IqPacket.TYPE.RESULT) {
2513						account.getBlocklist().add(jid);
2514						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
2515					}
2516				}
2517			});
2518		}
2519	}
2520
2521	public void sendUnblockRequest(final Blockable blockable) {
2522		if (blockable != null && blockable.getJid() != null) {
2523			final Jid jid = blockable.getBlockedJid();
2524			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
2525				@Override
2526				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2527					if (packet.getType() == IqPacket.TYPE.RESULT) {
2528						account.getBlocklist().remove(jid);
2529						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
2530					}
2531				}
2532			});
2533		}
2534	}
2535
2536	public interface OnMoreMessagesLoaded {
2537		public void onMoreMessagesLoaded(int count, Conversation conversation);
2538
2539		public void informUser(int r);
2540	}
2541
2542	public interface OnAccountPasswordChanged {
2543		public void onPasswordChangeSucceeded();
2544
2545		public void onPasswordChangeFailed();
2546	}
2547
2548	public interface OnAffiliationChanged {
2549		public void onAffiliationChangedSuccessful(Jid jid);
2550
2551		public void onAffiliationChangeFailed(Jid jid, int resId);
2552	}
2553
2554	public interface OnRoleChanged {
2555		public void onRoleChangedSuccessful(String nick);
2556
2557		public void onRoleChangeFailed(String nick, int resid);
2558	}
2559
2560	public interface OnConversationUpdate {
2561		public void onConversationUpdate();
2562	}
2563
2564	public interface OnAccountUpdate {
2565		public void onAccountUpdate();
2566	}
2567
2568	public interface OnRosterUpdate {
2569		public void onRosterUpdate();
2570	}
2571
2572	public interface OnMucRosterUpdate {
2573		public void onMucRosterUpdate();
2574	}
2575
2576	public interface OnConferenceOptionsPushed {
2577		public void onPushSucceeded();
2578
2579		public void onPushFailed();
2580	}
2581
2582	public class XmppConnectionBinder extends Binder {
2583		public XmppConnectionService getService() {
2584			return XmppConnectionService.this;
2585		}
2586	}
2587}