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	public void sendMessage(final Message message) {
 675		final Account account = message.getConversation().getAccount();
 676		account.deactivateGracePeriod();
 677		final Conversation conv = message.getConversation();
 678		MessagePacket packet = null;
 679		boolean saveInDb = true;
 680		boolean send = false;
 681		if (account.getStatus() == Account.State.ONLINE
 682				&& account.getXmppConnection() != null) {
 683			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 684				if (message.getCounterpart() != null) {
 685					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 686						if (!conv.hasValidOtrSession()) {
 687							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 688							message.setStatus(Message.STATUS_WAITING);
 689						} else if (conv.hasValidOtrSession()
 690								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 691							mJingleConnectionManager
 692								.createNewConnection(message);
 693								}
 694					} else {
 695						mJingleConnectionManager.createNewConnection(message);
 696					}
 697				} else {
 698					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 699						conv.startOtrIfNeeded();
 700					}
 701					message.setStatus(Message.STATUS_WAITING);
 702				}
 703			} else {
 704				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 705					if (!conv.hasValidOtrSession() && (message.getCounterpart() != null)) {
 706						conv.startOtrSession(message.getCounterpart().getResourcepart(), true);
 707						message.setStatus(Message.STATUS_WAITING);
 708					} else if (conv.hasValidOtrSession()) {
 709						if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 710							packet = mMessageGenerator.generateOtrChat(message);
 711							send = true;
 712						} else {
 713							message.setStatus(Message.STATUS_WAITING);
 714							conv.startOtrIfNeeded();
 715						}
 716					} else {
 717						message.setStatus(Message.STATUS_WAITING);
 718					}
 719				} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 720					message.getConversation().endOtrIfNeeded();
 721					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 722						@Override
 723						public void onMessageFound(Message message) {
 724							markMessage(message,Message.STATUS_SEND_FAILED);
 725						}
 726					});
 727					packet = mMessageGenerator.generatePgpChat(message);
 728					send = true;
 729				} else {
 730					message.getConversation().endOtrIfNeeded();
 731					message.getConversation().findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
 732						@Override
 733						public void onMessageFound(Message message) {
 734							markMessage(message,Message.STATUS_SEND_FAILED);
 735						}
 736					});
 737					packet = mMessageGenerator.generateChat(message);
 738					send = true;
 739				}
 740			}
 741			if (!account.getXmppConnection().getFeatures().sm()
 742					&& conv.getMode() != Conversation.MODE_MULTI) {
 743				message.setStatus(Message.STATUS_SEND);
 744					}
 745		} else {
 746			message.setStatus(Message.STATUS_WAITING);
 747			if (message.getType() == Message.TYPE_TEXT) {
 748				if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 749					String pgpBody = message.getEncryptedBody();
 750					String decryptedBody = message.getBody();
 751					message.setBody(pgpBody);
 752					message.setEncryption(Message.ENCRYPTION_PGP);
 753					databaseBackend.createMessage(message);
 754					saveInDb = false;
 755					message.setBody(decryptedBody);
 756					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 757				} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 758					if (!conv.hasValidOtrSession()
 759							&& message.getCounterpart() != null) {
 760						conv.startOtrSession(message.getCounterpart().getResourcepart(), false);
 761							}
 762				}
 763			}
 764
 765		}
 766		conv.add(message);
 767		if (saveInDb) {
 768			if (message.getEncryption() == Message.ENCRYPTION_NONE
 769					|| saveEncryptedMessages()) {
 770				databaseBackend.createMessage(message);
 771					}
 772		}
 773		if ((send) && (packet != null)) {
 774			if (conv.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 775				if (this.sendChatStates()) {
 776					packet.addChild(ChatState.toElement(conv.getOutgoingChatState()));
 777				}
 778			}
 779			sendMessagePacket(account, packet);
 780		}
 781		updateConversationUi();
 782	}
 783
 784	private void sendUnsentMessages(final Conversation conversation) {
 785		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 786
 787			@Override
 788			public void onMessageFound(Message message) {
 789				resendMessage(message);
 790			}
 791		});
 792	}
 793
 794	private void resendMessage(final Message message) {
 795		Account account = message.getConversation().getAccount();
 796		MessagePacket packet = null;
 797		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 798			Presences presences = message.getConversation().getContact()
 799				.getPresences();
 800			if (!message.getConversation().hasValidOtrSession()) {
 801				if ((message.getCounterpart() != null)
 802						&& (presences.has(message.getCounterpart().getResourcepart()))) {
 803					message.getConversation().startOtrSession(message.getCounterpart().getResourcepart(), true);
 804				} else {
 805					if (presences.size() == 1) {
 806						String presence = presences.asStringArray()[0];
 807						message.getConversation().startOtrSession(presence, true);
 808					}
 809				}
 810			} else {
 811				if (message.getConversation().getOtrSession()
 812						.getSessionStatus() == SessionStatus.ENCRYPTED) {
 813					try {
 814						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
 815						if (message.getType() == Message.TYPE_TEXT) {
 816							packet = mMessageGenerator.generateOtrChat(message,
 817									true);
 818						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 819							mJingleConnectionManager.createNewConnection(message);
 820						}
 821					} catch (final InvalidJidException ignored) {
 822
 823					}
 824						}
 825			}
 826		} else if (message.getType() == Message.TYPE_TEXT) {
 827			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 828				packet = mMessageGenerator.generateChat(message, true);
 829			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
 830					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
 831				packet = mMessageGenerator.generatePgpChat(message, true);
 832					}
 833		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
 834			Contact contact = message.getConversation().getContact();
 835			Presences presences = contact.getPresences();
 836			if ((message.getCounterpart() != null)
 837					&& (presences.has(message.getCounterpart().getResourcepart()))) {
 838				mJingleConnectionManager.createNewConnection(message);
 839			} else {
 840				if (presences.size() == 1) {
 841					String presence = presences.asStringArray()[0];
 842					try {
 843						message.setCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 844					} catch (InvalidJidException e) {
 845						return;
 846					}
 847					mJingleConnectionManager.createNewConnection(message);
 848				}
 849			}
 850		}
 851		if (packet != null) {
 852			if (!account.getXmppConnection().getFeatures().sm()
 853					&& message.getConversation().getMode() != Conversation.MODE_MULTI) {
 854				markMessage(message, Message.STATUS_SEND);
 855			} else {
 856				markMessage(message, Message.STATUS_UNSEND);
 857			}
 858			if (message.getConversation().setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 859				if (this.sendChatStates()) {
 860					packet.addChild(ChatState.toElement(message.getConversation().getOutgoingChatState()));
 861				}
 862			}
 863			sendMessagePacket(account, packet);
 864		}
 865	}
 866
 867	public void fetchRosterFromServer(final Account account) {
 868		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 869		if (!"".equals(account.getRosterVersion())) {
 870			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 871					+ ": fetching roster version " + account.getRosterVersion());
 872		} else {
 873			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 874		}
 875		iqPacket.query(Xmlns.ROSTER).setAttribute("ver",
 876				account.getRosterVersion());
 877		account.getXmppConnection().sendIqPacket(iqPacket, mIqParser);
 878	}
 879
 880	public void fetchBookmarks(final Account account) {
 881		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 882		final Element query = iqPacket.query("jabber:iq:private");
 883		query.addChild("storage", "storage:bookmarks");
 884		final OnIqPacketReceived callback = new OnIqPacketReceived() {
 885
 886			@Override
 887			public void onIqPacketReceived(final Account account, final IqPacket packet) {
 888				final Element query = packet.query();
 889				final List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 890				final Element storage = query.findChild("storage",
 891						"storage:bookmarks");
 892				if (storage != null) {
 893					for (final Element item : storage.getChildren()) {
 894						if (item.getName().equals("conference")) {
 895							final Bookmark bookmark = Bookmark.parse(item, account);
 896							bookmarks.add(bookmark);
 897							Conversation conversation = find(bookmark);
 898							if (conversation != null) {
 899								conversation.setBookmark(bookmark);
 900							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 901								conversation = findOrCreateConversation(
 902										account, bookmark.getJid(), true);
 903								conversation.setBookmark(bookmark);
 904								joinMuc(conversation);
 905							}
 906						}
 907					}
 908				}
 909				account.setBookmarks(bookmarks);
 910			}
 911		};
 912		sendIqPacket(account, iqPacket, callback);
 913	}
 914
 915	public void pushBookmarks(Account account) {
 916		IqPacket iqPacket = new IqPacket(IqPacket.TYPE.SET);
 917		Element query = iqPacket.query("jabber:iq:private");
 918		Element storage = query.addChild("storage", "storage:bookmarks");
 919		for (Bookmark bookmark : account.getBookmarks()) {
 920			storage.addChild(bookmark);
 921		}
 922		sendIqPacket(account, iqPacket, mDefaultIqHandler);
 923	}
 924
 925	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 926		if (mPhoneContactMergerThread != null) {
 927			mPhoneContactMergerThread.interrupt();
 928		}
 929		mPhoneContactMergerThread = new Thread(new Runnable() {
 930			@Override
 931			public void run() {
 932				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 933				for (Account account : accounts) {
 934					List<Contact> withSystemAccounts = account.getRoster().getWithSystemAccounts();
 935					for (Bundle phoneContact : phoneContacts) {
 936						if (Thread.interrupted()) {
 937							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 938							return;
 939						}
 940						Jid jid;
 941						try {
 942							jid = Jid.fromString(phoneContact.getString("jid"));
 943						} catch (final InvalidJidException e) {
 944							continue;
 945						}
 946						final Contact contact = account.getRoster().getContact(jid);
 947						String systemAccount = phoneContact.getInt("phoneid")
 948							+ "#"
 949							+ phoneContact.getString("lookup");
 950						contact.setSystemAccount(systemAccount);
 951						if (contact.setPhotoUri(phoneContact.getString("photouri"))) {
 952							getAvatarService().clear(contact);
 953						}
 954						contact.setSystemName(phoneContact.getString("displayname"));
 955						withSystemAccounts.remove(contact);
 956					}
 957					for(Contact contact : withSystemAccounts) {
 958						contact.setSystemAccount(null);
 959						contact.setSystemName(null);
 960						if (contact.setPhotoUri(null)) {
 961							getAvatarService().clear(contact);
 962						}
 963					}
 964				}
 965				Log.d(Config.LOGTAG,"finished merging phone contacts");
 966				updateAccountUi();
 967			}
 968		});
 969		mPhoneContactMergerThread.start();
 970	}
 971
 972	private void restoreFromDatabase() {
 973		synchronized (this.conversations) {
 974			final Map<String, Account> accountLookupTable = new Hashtable<>();
 975			for (Account account : this.accounts) {
 976				accountLookupTable.put(account.getUuid(), account);
 977			}
 978			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 979			for (Conversation conversation : this.conversations) {
 980				Account account = accountLookupTable.get(conversation.getAccountUuid());
 981				conversation.setAccount(account);
 982			}
 983			Runnable runnable =new Runnable() {
 984				@Override
 985				public void run() {
 986					Log.d(Config.LOGTAG,"restoring roster");
 987					for(Account account : accounts) {
 988						databaseBackend.readRoster(account.getRoster());
 989					}
 990					getBitmapCache().evictAll();
 991					Looper.prepare();
 992					PhoneHelper.loadPhoneContacts(getApplicationContext(),
 993							new CopyOnWriteArrayList<Bundle>(),
 994							XmppConnectionService.this);
 995					Log.d(Config.LOGTAG,"restoring messages");
 996					for (Conversation conversation : conversations) {
 997						conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 998						checkDeletedFiles(conversation);
 999					}
1000					mRestoredFromDatabase = true;
1001					Log.d(Config.LOGTAG,"restored all messages");
1002					updateConversationUi();
1003				}
1004			};
1005			mDatabaseExecutor.execute(runnable);
1006		}
1007	}
1008
1009	public List<Conversation> getConversations() {
1010		return this.conversations;
1011	}
1012
1013	private void checkDeletedFiles(Conversation conversation) {
1014		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
1015
1016			@Override
1017			public void onMessageFound(Message message) {
1018				if (!getFileBackend().isFileAvailable(message)) {
1019					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
1020				}
1021			}
1022		});
1023	}
1024
1025	private void markFileDeleted(String uuid) {
1026		for (Conversation conversation : getConversations()) {
1027			Message message = conversation.findMessageWithFileAndUuid(uuid);
1028			if (message != null) {
1029				if (!getFileBackend().isFileAvailable(message)) {
1030					message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
1031					updateConversationUi();
1032				}
1033				return;
1034			}
1035		}
1036	}
1037
1038	public void populateWithOrderedConversations(final List<Conversation> list) {
1039		populateWithOrderedConversations(list, true);
1040	}
1041
1042	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeConferences) {
1043		list.clear();
1044		if (includeConferences) {
1045			list.addAll(getConversations());
1046		} else {
1047			for (Conversation conversation : getConversations()) {
1048				if (conversation.getMode() == Conversation.MODE_SINGLE) {
1049					list.add(conversation);
1050				}
1051			}
1052		}
1053		Collections.sort(list, new Comparator<Conversation>() {
1054			@Override
1055			public int compare(Conversation lhs, Conversation rhs) {
1056				Message left = lhs.getLatestMessage();
1057				Message right = rhs.getLatestMessage();
1058				if (left.getTimeSent() > right.getTimeSent()) {
1059					return -1;
1060				} else if (left.getTimeSent() < right.getTimeSent()) {
1061					return 1;
1062				} else {
1063					return 0;
1064				}
1065			}
1066		});
1067	}
1068
1069	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
1070		Log.d(Config.LOGTAG, "load more messages for " + conversation.getName() + " prior to " + MessageGenerator.getTimestamp(timestamp));
1071		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
1072			return;
1073		}
1074		Runnable runnable = new Runnable() {
1075			@Override
1076			public void run() {
1077				final Account account = conversation.getAccount();
1078				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
1079				if (messages.size() > 0) {
1080					conversation.addAll(0, messages);
1081					checkDeletedFiles(conversation);
1082					callback.onMoreMessagesLoaded(messages.size(), conversation);
1083				} else if (conversation.hasMessagesLeftOnServer()
1084						&& account.isOnlineAndConnected()
1085						&& account.getXmppConnection().getFeatures().mam()) {
1086					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
1087					if (query != null) {
1088						query.setCallback(callback);
1089					}
1090					callback.informUser(R.string.fetching_history_from_server);
1091				}
1092			}
1093		};
1094		mDatabaseExecutor.execute(runnable);
1095	}
1096
1097	public List<Account> getAccounts() {
1098		return this.accounts;
1099	}
1100
1101	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
1102		for (final Conversation conversation : haystack) {
1103			if (conversation.getContact() == contact) {
1104				return conversation;
1105			}
1106		}
1107		return null;
1108	}
1109
1110	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1111		if (jid == null) {
1112			return null;
1113		}
1114		for (final Conversation conversation : haystack) {
1115			if ((account == null || conversation.getAccount() == account)
1116					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1117				return conversation;
1118			}
1119		}
1120		return null;
1121	}
1122
1123	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc) {
1124		return this.findOrCreateConversation(account, jid, muc, null);
1125	}
1126
1127	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final MessageArchiveService.Query query) {
1128		synchronized (this.conversations) {
1129			Conversation conversation = find(account, jid);
1130			if (conversation != null) {
1131				return conversation;
1132			}
1133			conversation = databaseBackend.findConversation(account, jid);
1134			if (conversation != null) {
1135				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1136				conversation.setAccount(account);
1137				if (muc) {
1138					conversation.setMode(Conversation.MODE_MULTI);
1139					conversation.setContactJid(jid);
1140				} else {
1141					conversation.setMode(Conversation.MODE_SINGLE);
1142					conversation.setContactJid(jid.toBareJid());
1143				}
1144				conversation.setNextEncryption(-1);
1145				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1146				this.databaseBackend.updateConversation(conversation);
1147			} else {
1148				String conversationName;
1149				Contact contact = account.getRoster().getContact(jid);
1150				if (contact != null) {
1151					conversationName = contact.getDisplayName();
1152				} else {
1153					conversationName = jid.getLocalpart();
1154				}
1155				if (muc) {
1156					conversation = new Conversation(conversationName, account, jid,
1157							Conversation.MODE_MULTI);
1158				} else {
1159					conversation = new Conversation(conversationName, account, jid.toBareJid(),
1160							Conversation.MODE_SINGLE);
1161				}
1162				this.databaseBackend.createConversation(conversation);
1163			}
1164			if (account.getXmppConnection() != null
1165					&& account.getXmppConnection().getFeatures().mam()
1166					&& !muc) {
1167				if (query == null) {
1168					this.mMessageArchiveService.query(conversation);
1169				} else {
1170					if (query.getConversation() == null) {
1171						this.mMessageArchiveService.query(conversation, query.getStart());
1172					}
1173				}
1174			}
1175			checkDeletedFiles(conversation);
1176			this.conversations.add(conversation);
1177			updateConversationUi();
1178			return conversation;
1179		}
1180	}
1181
1182	public void archiveConversation(Conversation conversation) {
1183		getNotificationService().clear(conversation);
1184		conversation.setStatus(Conversation.STATUS_ARCHIVED);
1185		conversation.setNextEncryption(-1);
1186		synchronized (this.conversations) {
1187			if (conversation.getMode() == Conversation.MODE_MULTI) {
1188				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1189					Bookmark bookmark = conversation.getBookmark();
1190					if (bookmark != null && bookmark.autojoin()) {
1191						bookmark.setAutojoin(false);
1192						pushBookmarks(bookmark.getAccount());
1193					}
1194				}
1195				leaveMuc(conversation);
1196			} else {
1197				conversation.endOtrIfNeeded();
1198			}
1199			this.databaseBackend.updateConversation(conversation);
1200			this.conversations.remove(conversation);
1201			updateConversationUi();
1202		}
1203	}
1204
1205	public void createAccount(final Account account) {
1206		account.initAccountServices(this);
1207		databaseBackend.createAccount(account);
1208		this.accounts.add(account);
1209		this.reconnectAccountInBackground(account);
1210		updateAccountUi();
1211	}
1212
1213	public void updateAccount(final Account account) {
1214		this.statusListener.onStatusChanged(account);
1215		databaseBackend.updateAccount(account);
1216		reconnectAccount(account, false);
1217		updateAccountUi();
1218		getNotificationService().updateErrorNotification();
1219	}
1220
1221	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
1222		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
1223		sendIqPacket(account, iq, new OnIqPacketReceived() {
1224			@Override
1225			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1226				if (packet.getType() == IqPacket.TYPE.RESULT) {
1227					account.setPassword(newPassword);
1228					databaseBackend.updateAccount(account);
1229					callback.onPasswordChangeSucceeded();
1230				} else {
1231					callback.onPasswordChangeFailed();
1232				}
1233			}
1234		});
1235	}
1236
1237	public void deleteAccount(final Account account) {
1238		synchronized (this.conversations) {
1239			for (final Conversation conversation : conversations) {
1240				if (conversation.getAccount() == account) {
1241					if (conversation.getMode() == Conversation.MODE_MULTI) {
1242						leaveMuc(conversation);
1243					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1244						conversation.endOtrIfNeeded();
1245					}
1246					conversations.remove(conversation);
1247				}
1248			}
1249			if (account.getXmppConnection() != null) {
1250				this.disconnect(account, true);
1251			}
1252			databaseBackend.deleteAccount(account);
1253			this.accounts.remove(account);
1254			updateAccountUi();
1255			getNotificationService().updateErrorNotification();
1256		}
1257	}
1258
1259	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1260		synchronized (this) {
1261			if (checkListeners()) {
1262				switchToForeground();
1263			}
1264			this.mOnConversationUpdate = listener;
1265			this.mNotificationService.setIsInForeground(true);
1266			if (this.convChangedListenerCount < 2) {
1267				this.convChangedListenerCount++;
1268			}
1269		}
1270	}
1271
1272	public void removeOnConversationListChangedListener() {
1273		synchronized (this) {
1274			this.convChangedListenerCount--;
1275			if (this.convChangedListenerCount <= 0) {
1276				this.convChangedListenerCount = 0;
1277				this.mOnConversationUpdate = null;
1278				this.mNotificationService.setIsInForeground(false);
1279				if (checkListeners()) {
1280					switchToBackground();
1281				}
1282			}
1283		}
1284	}
1285
1286	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1287		synchronized (this) {
1288			if (checkListeners()) {
1289				switchToForeground();
1290			}
1291			this.mOnAccountUpdate = listener;
1292			if (this.accountChangedListenerCount < 2) {
1293				this.accountChangedListenerCount++;
1294			}
1295		}
1296	}
1297
1298	public void removeOnAccountListChangedListener() {
1299		synchronized (this) {
1300			this.accountChangedListenerCount--;
1301			if (this.accountChangedListenerCount <= 0) {
1302				this.mOnAccountUpdate = null;
1303				this.accountChangedListenerCount = 0;
1304				if (checkListeners()) {
1305					switchToBackground();
1306				}
1307			}
1308		}
1309	}
1310
1311	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
1312		synchronized (this) {
1313			if (checkListeners()) {
1314				switchToForeground();
1315			}
1316			this.mOnRosterUpdate = listener;
1317			if (this.rosterChangedListenerCount < 2) {
1318				this.rosterChangedListenerCount++;
1319			}
1320		}
1321	}
1322
1323	public void removeOnRosterUpdateListener() {
1324		synchronized (this) {
1325			this.rosterChangedListenerCount--;
1326			if (this.rosterChangedListenerCount <= 0) {
1327				this.rosterChangedListenerCount = 0;
1328				this.mOnRosterUpdate = null;
1329				if (checkListeners()) {
1330					switchToBackground();
1331				}
1332			}
1333		}
1334	}
1335
1336	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
1337		synchronized (this) {
1338			if (checkListeners()) {
1339				switchToForeground();
1340			}
1341			this.mOnUpdateBlocklist = listener;
1342			if (this.updateBlocklistListenerCount < 2) {
1343				this.updateBlocklistListenerCount++;
1344			}
1345		}
1346	}
1347
1348	public void removeOnUpdateBlocklistListener() {
1349		synchronized (this) {
1350			this.updateBlocklistListenerCount--;
1351			if (this.updateBlocklistListenerCount <= 0) {
1352				this.updateBlocklistListenerCount = 0;
1353				this.mOnUpdateBlocklist = null;
1354				if (checkListeners()) {
1355					switchToBackground();
1356				}
1357			}
1358		}
1359	}
1360
1361	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1362		synchronized (this) {
1363			if (checkListeners()) {
1364				switchToForeground();
1365			}
1366			this.mOnMucRosterUpdate = listener;
1367			if (this.mucRosterChangedListenerCount < 2) {
1368				this.mucRosterChangedListenerCount++;
1369			}
1370		}
1371	}
1372
1373	public void removeOnMucRosterUpdateListener() {
1374		synchronized (this) {
1375			this.mucRosterChangedListenerCount--;
1376			if (this.mucRosterChangedListenerCount <= 0) {
1377				this.mucRosterChangedListenerCount = 0;
1378				this.mOnMucRosterUpdate = null;
1379				if (checkListeners()) {
1380					switchToBackground();
1381				}
1382			}
1383		}
1384	}
1385
1386	private boolean checkListeners() {
1387		return (this.mOnAccountUpdate == null
1388				&& this.mOnConversationUpdate == null
1389				&& this.mOnRosterUpdate == null
1390				&& this.mOnUpdateBlocklist == null);
1391	}
1392
1393	private void switchToForeground() {
1394		for (Account account : getAccounts()) {
1395			if (account.getStatus() == Account.State.ONLINE) {
1396				XmppConnection connection = account.getXmppConnection();
1397				if (connection != null && connection.getFeatures().csi()) {
1398					connection.sendActive();
1399				}
1400			}
1401		}
1402		Log.d(Config.LOGTAG, "app switched into foreground");
1403	}
1404
1405	private void switchToBackground() {
1406		for (Account account : getAccounts()) {
1407			if (account.getStatus() == Account.State.ONLINE) {
1408				XmppConnection connection = account.getXmppConnection();
1409				if (connection != null && connection.getFeatures().csi()) {
1410					connection.sendInactive();
1411				}
1412			}
1413		}
1414		for(Conversation conversation : getConversations()) {
1415			conversation.setIncomingChatState(ChatState.ACTIVE);
1416		}
1417		this.mNotificationService.setIsInForeground(false);
1418		Log.d(Config.LOGTAG, "app switched into background");
1419	}
1420
1421	private void connectMultiModeConversations(Account account) {
1422		List<Conversation> conversations = getConversations();
1423		for (Conversation conversation : conversations) {
1424			if ((conversation.getMode() == Conversation.MODE_MULTI)
1425					&& (conversation.getAccount() == account)) {
1426				conversation.resetMucOptions();
1427				joinMuc(conversation);
1428			}
1429		}
1430	}
1431
1432	public void joinMuc(Conversation conversation) {
1433		Account account = conversation.getAccount();
1434		account.pendingConferenceJoins.remove(conversation);
1435		account.pendingConferenceLeaves.remove(conversation);
1436		if (account.getStatus() == Account.State.ONLINE) {
1437			final String nick = conversation.getMucOptions().getProposedNick();
1438			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1439			if (joinJid == null) {
1440				return; //safety net
1441			}
1442			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1443			PresencePacket packet = new PresencePacket();
1444			packet.setFrom(conversation.getAccount().getJid());
1445			packet.setTo(joinJid);
1446			Element x = packet.addChild("x", "http://jabber.org/protocol/muc");
1447			if (conversation.getMucOptions().getPassword() != null) {
1448				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1449			}
1450			x.addChild("history").setAttribute("since", PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1451			String sig = account.getPgpSignature();
1452			if (sig != null) {
1453				packet.addChild("status").setContent("online");
1454				packet.addChild("x", "jabber:x:signed").setContent(sig);
1455			}
1456			sendPresencePacket(account, packet);
1457			fetchConferenceConfiguration(conversation);
1458			if (!joinJid.equals(conversation.getJid())) {
1459				conversation.setContactJid(joinJid);
1460				databaseBackend.updateConversation(conversation);
1461			}
1462			conversation.setHasMessagesLeftOnServer(false);
1463		} else {
1464			account.pendingConferenceJoins.add(conversation);
1465		}
1466	}
1467
1468	public void providePasswordForMuc(Conversation conversation, String password) {
1469		if (conversation.getMode() == Conversation.MODE_MULTI) {
1470			conversation.getMucOptions().setPassword(password);
1471			if (conversation.getBookmark() != null) {
1472				conversation.getBookmark().setAutojoin(true);
1473				pushBookmarks(conversation.getAccount());
1474			}
1475			databaseBackend.updateConversation(conversation);
1476			joinMuc(conversation);
1477		}
1478	}
1479
1480	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1481		final MucOptions options = conversation.getMucOptions();
1482		final Jid joinJid = options.createJoinJid(nick);
1483		if (options.online()) {
1484			Account account = conversation.getAccount();
1485			options.setOnRenameListener(new OnRenameListener() {
1486
1487				@Override
1488				public void onSuccess() {
1489					conversation.setContactJid(joinJid);
1490					databaseBackend.updateConversation(conversation);
1491					Bookmark bookmark = conversation.getBookmark();
1492					if (bookmark != null) {
1493						bookmark.setNick(nick);
1494						pushBookmarks(bookmark.getAccount());
1495					}
1496					callback.success(conversation);
1497				}
1498
1499				@Override
1500				public void onFailure() {
1501					callback.error(R.string.nick_in_use, conversation);
1502				}
1503			});
1504
1505			PresencePacket packet = new PresencePacket();
1506			packet.setTo(joinJid);
1507			packet.setFrom(conversation.getAccount().getJid());
1508
1509			String sig = account.getPgpSignature();
1510			if (sig != null) {
1511				packet.addChild("status").setContent("online");
1512				packet.addChild("x", "jabber:x:signed").setContent(sig);
1513			}
1514			sendPresencePacket(account, packet);
1515		} else {
1516			conversation.setContactJid(joinJid);
1517			databaseBackend.updateConversation(conversation);
1518			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1519				Bookmark bookmark = conversation.getBookmark();
1520				if (bookmark != null) {
1521					bookmark.setNick(nick);
1522					pushBookmarks(bookmark.getAccount());
1523				}
1524				joinMuc(conversation);
1525			}
1526		}
1527	}
1528
1529	public void leaveMuc(Conversation conversation) {
1530		Account account = conversation.getAccount();
1531		account.pendingConferenceJoins.remove(conversation);
1532		account.pendingConferenceLeaves.remove(conversation);
1533		if (account.getStatus() == Account.State.ONLINE) {
1534			PresencePacket packet = new PresencePacket();
1535			packet.setTo(conversation.getJid());
1536			packet.setFrom(conversation.getAccount().getJid());
1537			packet.setAttribute("type", "unavailable");
1538			sendPresencePacket(conversation.getAccount(), packet);
1539			conversation.getMucOptions().setOffline();
1540			conversation.deregisterWithBookmark();
1541			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1542					+ ": leaving muc " + conversation.getJid());
1543		} else {
1544			account.pendingConferenceLeaves.add(conversation);
1545		}
1546	}
1547
1548	private String findConferenceServer(final Account account) {
1549		String server;
1550		if (account.getXmppConnection() != null) {
1551			server = account.getXmppConnection().getMucServer();
1552			if (server != null) {
1553				return server;
1554			}
1555		}
1556		for (Account other : getAccounts()) {
1557			if (other != account && other.getXmppConnection() != null) {
1558				server = other.getXmppConnection().getMucServer();
1559				if (server != null) {
1560					return server;
1561				}
1562			}
1563		}
1564		return null;
1565	}
1566
1567	public void createAdhocConference(final Account account, final Iterable<Jid> jids, final UiCallback<Conversation> callback) {
1568		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
1569		if (account.getStatus() == Account.State.ONLINE) {
1570			try {
1571				String server = findConferenceServer(account);
1572				if (server == null) {
1573					if (callback != null) {
1574						callback.error(R.string.no_conference_server_found, null);
1575					}
1576					return;
1577				}
1578				String name = new BigInteger(75, getRNG()).toString(32);
1579				Jid jid = Jid.fromParts(name, server, null);
1580				final Conversation conversation = findOrCreateConversation(account, jid, true);
1581				joinMuc(conversation);
1582				Bundle options = new Bundle();
1583				options.putString("muc#roomconfig_persistentroom", "1");
1584				options.putString("muc#roomconfig_membersonly", "1");
1585				options.putString("muc#roomconfig_publicroom", "0");
1586				options.putString("muc#roomconfig_whois", "anyone");
1587				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1588					@Override
1589					public void onPushSucceeded() {
1590						for (Jid invite : jids) {
1591							invite(conversation, invite);
1592						}
1593						if (account.countPresences() > 1) {
1594							directInvite(conversation, account.getJid().toBareJid());
1595						}
1596						if (callback != null) {
1597							callback.success(conversation);
1598						}
1599					}
1600
1601					@Override
1602					public void onPushFailed() {
1603						if (callback != null) {
1604							callback.error(R.string.conference_creation_failed, conversation);
1605						}
1606					}
1607				});
1608
1609			} catch (InvalidJidException e) {
1610				if (callback != null) {
1611					callback.error(R.string.conference_creation_failed, null);
1612				}
1613			}
1614		} else {
1615			if (callback != null) {
1616				callback.error(R.string.not_connected_try_again, null);
1617			}
1618		}
1619	}
1620
1621	public void fetchConferenceConfiguration(final Conversation conversation) {
1622		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1623		request.setTo(conversation.getJid().toBareJid());
1624		request.query("http://jabber.org/protocol/disco#info");
1625		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
1626			@Override
1627			public void onIqPacketReceived(Account account, IqPacket packet) {
1628				if (packet.getType() != IqPacket.TYPE.ERROR) {
1629					ArrayList<String> features = new ArrayList<>();
1630					for (Element child : packet.query().getChildren()) {
1631						if (child != null && child.getName().equals("feature")) {
1632							String var = child.getAttribute("var");
1633							if (var != null) {
1634								features.add(var);
1635							}
1636						}
1637					}
1638					conversation.getMucOptions().updateFeatures(features);
1639					updateConversationUi();
1640				}
1641			}
1642		});
1643	}
1644
1645	public void pushConferenceConfiguration(final Conversation conversation, final Bundle options, final OnConferenceOptionsPushed callback) {
1646		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1647		request.setTo(conversation.getJid().toBareJid());
1648		request.query("http://jabber.org/protocol/muc#owner");
1649		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
1650			@Override
1651			public void onIqPacketReceived(Account account, IqPacket packet) {
1652				if (packet.getType() != IqPacket.TYPE.ERROR) {
1653					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1654					for (Field field : data.getFields()) {
1655						if (options.containsKey(field.getName())) {
1656							field.setValue(options.getString(field.getName()));
1657						}
1658					}
1659					data.submit();
1660					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
1661					set.setTo(conversation.getJid().toBareJid());
1662					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1663					sendIqPacket(account, set, new OnIqPacketReceived() {
1664						@Override
1665						public void onIqPacketReceived(Account account, IqPacket packet) {
1666							if (packet.getType() == IqPacket.TYPE.RESULT) {
1667								if (callback != null) {
1668									callback.onPushSucceeded();
1669								}
1670							} else {
1671								if (callback != null) {
1672									callback.onPushFailed();
1673								}
1674							}
1675						}
1676					});
1677				} else {
1678					if (callback != null) {
1679						callback.onPushFailed();
1680					}
1681				}
1682			}
1683		});
1684	}
1685
1686	public void pushSubjectToConference(final Conversation conference, final String subject) {
1687		MessagePacket packet = this.getMessageGenerator().conferenceSubject(conference, subject);
1688		this.sendMessagePacket(conference.getAccount(), packet);
1689		final MucOptions mucOptions = conference.getMucOptions();
1690		final MucOptions.User self = mucOptions.getSelf();
1691		if (!mucOptions.persistent() && self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
1692			Bundle options = new Bundle();
1693			options.putString("muc#roomconfig_persistentroom", "1");
1694			this.pushConferenceConfiguration(conference, options, null);
1695		}
1696	}
1697
1698	public void changeAffiliationInConference(final Conversation conference, Jid user, MucOptions.Affiliation affiliation, final OnAffiliationChanged callback) {
1699		final Jid jid = user.toBareJid();
1700		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jid, affiliation.toString());
1701		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
1702			@Override
1703			public void onIqPacketReceived(Account account, IqPacket packet) {
1704				if (packet.getType() == IqPacket.TYPE.RESULT) {
1705					callback.onAffiliationChangedSuccessful(jid);
1706				} else {
1707					callback.onAffiliationChangeFailed(jid, R.string.could_not_change_affiliation);
1708				}
1709			}
1710		});
1711	}
1712
1713	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
1714		List<Jid> jids = new ArrayList<>();
1715		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
1716			if (user.getAffiliation() == before) {
1717				jids.add(user.getJid());
1718			}
1719		}
1720		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jids, after.toString());
1721		sendIqPacket(conference.getAccount(), request, mDefaultIqHandler);
1722	}
1723
1724	public void changeRoleInConference(final Conversation conference, final String nick, MucOptions.Role role, final OnRoleChanged callback) {
1725		IqPacket request = this.mIqGenerator.changeRole(conference, nick, role.toString());
1726		Log.d(Config.LOGTAG, request.toString());
1727		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
1728			@Override
1729			public void onIqPacketReceived(Account account, IqPacket packet) {
1730				Log.d(Config.LOGTAG, packet.toString());
1731				if (packet.getType() == IqPacket.TYPE.RESULT) {
1732					callback.onRoleChangedSuccessful(nick);
1733				} else {
1734					callback.onRoleChangeFailed(nick, R.string.could_not_change_role);
1735				}
1736			}
1737		});
1738	}
1739
1740	public void disconnect(Account account, boolean force) {
1741		if ((account.getStatus() == Account.State.ONLINE)
1742				|| (account.getStatus() == Account.State.DISABLED)) {
1743			if (!force) {
1744				List<Conversation> conversations = getConversations();
1745				for (Conversation conversation : conversations) {
1746					if (conversation.getAccount() == account) {
1747						if (conversation.getMode() == Conversation.MODE_MULTI) {
1748							leaveMuc(conversation);
1749						} else {
1750							if (conversation.endOtrIfNeeded()) {
1751								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1752										+ ": ended otr session with "
1753										+ conversation.getJid());
1754							}
1755						}
1756					}
1757				}
1758				sendOfflinePresence(account);
1759			}
1760			account.getXmppConnection().disconnect(force);
1761		}
1762	}
1763
1764	@Override
1765	public IBinder onBind(Intent intent) {
1766		return mBinder;
1767	}
1768
1769	public void updateMessage(Message message) {
1770		databaseBackend.updateMessage(message);
1771		updateConversationUi();
1772	}
1773
1774	protected void syncDirtyContacts(Account account) {
1775		for (Contact contact : account.getRoster().getContacts()) {
1776			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1777				pushContactToServer(contact);
1778			}
1779			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1780				deleteContactOnServer(contact);
1781			}
1782		}
1783	}
1784
1785	public void createContact(Contact contact) {
1786		SharedPreferences sharedPref = getPreferences();
1787		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1788		if (autoGrant) {
1789			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1790			contact.setOption(Contact.Options.ASKING);
1791		}
1792		pushContactToServer(contact);
1793	}
1794
1795	public void onOtrSessionEstablished(Conversation conversation) {
1796		final Account account = conversation.getAccount();
1797		final Session otrSession = conversation.getOtrSession();
1798		Log.d(Config.LOGTAG,
1799				account.getJid().toBareJid() + " otr session established with "
1800						+ conversation.getJid() + "/"
1801						+ otrSession.getSessionID().getUserID());
1802		conversation.findUnsentMessagesWithOtrEncryption(new Conversation.OnMessageFound() {
1803
1804			@Override
1805			public void onMessageFound(Message message) {
1806				SessionID id = otrSession.getSessionID();
1807				try {
1808					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1809				} catch (InvalidJidException e) {
1810					return;
1811				}
1812				if (message.getType() == Message.TYPE_TEXT) {
1813					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
1814					if (outPacket != null) {
1815						message.setStatus(Message.STATUS_SEND);
1816						databaseBackend.updateMessage(message);
1817						sendMessagePacket(account, outPacket);
1818					}
1819				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
1820					mJingleConnectionManager.createNewConnection(message);
1821				}
1822				updateConversationUi();
1823			}
1824		});
1825	}
1826
1827	public boolean renewSymmetricKey(Conversation conversation) {
1828		Account account = conversation.getAccount();
1829		byte[] symmetricKey = new byte[32];
1830		this.mRandom.nextBytes(symmetricKey);
1831		Session otrSession = conversation.getOtrSession();
1832		if (otrSession != null) {
1833			MessagePacket packet = new MessagePacket();
1834			packet.setType(MessagePacket.TYPE_CHAT);
1835			packet.setFrom(account.getJid());
1836			packet.addChild("private", "urn:xmpp:carbons:2");
1837			packet.addChild("no-copy", "urn:xmpp:hints");
1838			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1839					+ otrSession.getSessionID().getUserID());
1840			try {
1841				packet.setBody(otrSession
1842						.transformSending(CryptoHelper.FILETRANSFER
1843								+ CryptoHelper.bytesToHex(symmetricKey))[0]);
1844				sendMessagePacket(account, packet);
1845				conversation.setSymmetricKey(symmetricKey);
1846				return true;
1847			} catch (OtrException e) {
1848				return false;
1849			}
1850		}
1851		return false;
1852	}
1853
1854	public void pushContactToServer(final Contact contact) {
1855		contact.resetOption(Contact.Options.DIRTY_DELETE);
1856		contact.setOption(Contact.Options.DIRTY_PUSH);
1857		final Account account = contact.getAccount();
1858		if (account.getStatus() == Account.State.ONLINE) {
1859			final boolean ask = contact.getOption(Contact.Options.ASKING);
1860			final boolean sendUpdates = contact
1861					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1862					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1863			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1864			iq.query(Xmlns.ROSTER).addChild(contact.asElement());
1865			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
1866			if (sendUpdates) {
1867				sendPresencePacket(account,
1868						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1869			}
1870			if (ask) {
1871				sendPresencePacket(account,
1872						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1873			}
1874		}
1875	}
1876
1877	public void publishAvatar(final Account account,
1878							  final Uri image,
1879							  final UiCallback<Avatar> callback) {
1880		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1881		final int size = Config.AVATAR_SIZE;
1882		final Avatar avatar = getFileBackend()
1883				.getPepAvatar(image, size, format);
1884		if (avatar != null) {
1885			avatar.height = size;
1886			avatar.width = size;
1887			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1888				avatar.type = "image/webp";
1889			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1890				avatar.type = "image/jpeg";
1891			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1892				avatar.type = "image/png";
1893			}
1894			if (!getFileBackend().save(avatar)) {
1895				callback.error(R.string.error_saving_avatar, avatar);
1896				return;
1897			}
1898			final IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1899			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1900
1901				@Override
1902				public void onIqPacketReceived(Account account, IqPacket result) {
1903					if (result.getType() == IqPacket.TYPE.RESULT) {
1904						final IqPacket packet = XmppConnectionService.this.mIqGenerator
1905								.publishAvatarMetadata(avatar);
1906						sendIqPacket(account, packet, new OnIqPacketReceived() {
1907
1908							@Override
1909							public void onIqPacketReceived(Account account,
1910														   IqPacket result) {
1911								if (result.getType() == IqPacket.TYPE.RESULT) {
1912									if (account.setAvatar(avatar.getFilename())) {
1913										getAvatarService().clear(account);
1914										databaseBackend.updateAccount(account);
1915									}
1916									callback.success(avatar);
1917								} else {
1918									callback.error(
1919											R.string.error_publish_avatar_server_reject,
1920											avatar);
1921								}
1922							}
1923						});
1924					} else {
1925						callback.error(
1926								R.string.error_publish_avatar_server_reject,
1927								avatar);
1928					}
1929				}
1930			});
1931		} else {
1932			callback.error(R.string.error_publish_avatar_converting, null);
1933		}
1934	}
1935
1936	public void fetchAvatar(Account account, Avatar avatar) {
1937		fetchAvatar(account, avatar, null);
1938	}
1939
1940	private static String generateFetchKey(Account account, final Avatar avatar) {
1941		return account.getJid().toBareJid()+"_"+avatar.owner+"_"+avatar.sha1sum;
1942	}
1943
1944	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
1945		final String KEY = generateFetchKey(account, avatar);
1946		synchronized(this.mInProgressAvatarFetches) {
1947			if (this.mInProgressAvatarFetches.contains(KEY)) {
1948				return;
1949			} else {
1950				switch (avatar.origin) {
1951					case PEP:
1952						this.mInProgressAvatarFetches.add(KEY);
1953						fetchAvatarPep(account, avatar, callback);
1954						break;
1955					case VCARD:
1956						this.mInProgressAvatarFetches.add(KEY);
1957						fetchAvatarVcard(account, avatar, callback);
1958						break;
1959				}
1960			}
1961		}
1962	}
1963
1964	private void fetchAvatarPep(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
1965		IqPacket packet = this.mIqGenerator.retrievePepAvatar(avatar);
1966		sendIqPacket(account, packet, new OnIqPacketReceived() {
1967
1968			@Override
1969			public void onIqPacketReceived(Account account, IqPacket result) {
1970				synchronized (mInProgressAvatarFetches) {
1971					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
1972				}
1973				final String ERROR = account.getJid().toBareJid()
1974						+ ": fetching avatar for " + avatar.owner + " failed ";
1975				if (result.getType() == IqPacket.TYPE.RESULT) {
1976					avatar.image = mIqParser.avatarData(result);
1977					if (avatar.image != null) {
1978						if (getFileBackend().save(avatar)) {
1979							if (account.getJid().toBareJid().equals(avatar.owner)) {
1980								if (account.setAvatar(avatar.getFilename())) {
1981									databaseBackend.updateAccount(account);
1982								}
1983								getAvatarService().clear(account);
1984								updateConversationUi();
1985								updateAccountUi();
1986							} else {
1987								Contact contact = account.getRoster()
1988										.getContact(avatar.owner);
1989								contact.setAvatar(avatar);
1990								getAvatarService().clear(contact);
1991								updateConversationUi();
1992								updateRosterUi();
1993							}
1994							if (callback != null) {
1995								callback.success(avatar);
1996							}
1997							Log.d(Config.LOGTAG, account.getJid().toBareJid()
1998									+ ": succesfuly fetched pep avatar for " + avatar.owner);
1999							return;
2000						}
2001					} else {
2002
2003						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
2004					}
2005				} else {
2006					Element error = result.findChild("error");
2007					if (error == null) {
2008						Log.d(Config.LOGTAG, ERROR + "(server error)");
2009					} else {
2010						Log.d(Config.LOGTAG, ERROR + error.toString());
2011					}
2012				}
2013				if (callback != null) {
2014					callback.error(0, null);
2015				}
2016
2017			}
2018		});
2019	}
2020
2021	private void fetchAvatarVcard(final Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2022		IqPacket packet = this.mIqGenerator.retrieveVcardAvatar(avatar);
2023		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2024			@Override
2025			public void onIqPacketReceived(Account account, IqPacket packet) {
2026				synchronized (mInProgressAvatarFetches) {
2027					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
2028				}
2029				if (packet.getType() == IqPacket.TYPE.RESULT) {
2030					Element vCard = packet.findChild("vCard", "vcard-temp");
2031					Element photo = vCard != null ? vCard.findChild("PHOTO") : null;
2032					String image = photo != null ? photo.findChildContent("BINVAL") : null;
2033					if (image != null) {
2034						avatar.image = image;
2035						if (getFileBackend().save(avatar)) {
2036							Log.d(Config.LOGTAG, account.getJid().toBareJid()
2037									+ ": successfully fetched vCard avatar for " + avatar.owner);
2038							Contact contact = account.getRoster()
2039									.getContact(avatar.owner);
2040							contact.setAvatar(avatar);
2041							getAvatarService().clear(contact);
2042							updateConversationUi();
2043							updateRosterUi();
2044						}
2045					}
2046				}
2047			}
2048		});
2049	}
2050
2051	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
2052		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
2053		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2054
2055			@Override
2056			public void onIqPacketReceived(Account account, IqPacket packet) {
2057				if (packet.getType() == IqPacket.TYPE.RESULT) {
2058					Element pubsub = packet.findChild("pubsub",
2059							"http://jabber.org/protocol/pubsub");
2060					if (pubsub != null) {
2061						Element items = pubsub.findChild("items");
2062						if (items != null) {
2063							Avatar avatar = Avatar.parseMetadata(items);
2064							if (avatar != null) {
2065								avatar.owner = account.getJid().toBareJid();
2066								if (fileBackend.isAvatarCached(avatar)) {
2067									if (account.setAvatar(avatar.getFilename())) {
2068										databaseBackend.updateAccount(account);
2069									}
2070									getAvatarService().clear(account);
2071									callback.success(avatar);
2072								} else {
2073									fetchAvatarPep(account, avatar, callback);
2074								}
2075								return;
2076							}
2077						}
2078					}
2079				}
2080				callback.error(0, null);
2081			}
2082		});
2083	}
2084
2085	public void deleteContactOnServer(Contact contact) {
2086		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
2087		contact.resetOption(Contact.Options.DIRTY_PUSH);
2088		contact.setOption(Contact.Options.DIRTY_DELETE);
2089		Account account = contact.getAccount();
2090		if (account.getStatus() == Account.State.ONLINE) {
2091			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2092			Element item = iq.query(Xmlns.ROSTER).addChild("item");
2093			item.setAttribute("jid", contact.getJid().toString());
2094			item.setAttribute("subscription", "remove");
2095			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
2096		}
2097	}
2098
2099	public void updateConversation(Conversation conversation) {
2100		this.databaseBackend.updateConversation(conversation);
2101	}
2102
2103	public void reconnectAccount(final Account account, final boolean force) {
2104		synchronized (account) {
2105			if (account.getXmppConnection() != null) {
2106				disconnect(account, force);
2107			}
2108			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2109
2110				synchronized (this.mInProgressAvatarFetches) {
2111					for(Iterator<String> iterator = this.mInProgressAvatarFetches.iterator(); iterator.hasNext();) {
2112						final String KEY = iterator.next();
2113						if (KEY.startsWith(account.getJid().toBareJid()+"_")) {
2114							iterator.remove();
2115						}
2116					}
2117				}
2118
2119				if (account.getXmppConnection() == null) {
2120					account.setXmppConnection(createConnection(account));
2121				}
2122				Thread thread = new Thread(account.getXmppConnection());
2123				thread.start();
2124				scheduleWakeUpCall(Config.CONNECT_TIMEOUT, account.getUuid().hashCode());
2125			} else {
2126				account.getRoster().clearPresences();
2127				account.setXmppConnection(null);
2128			}
2129		}
2130	}
2131
2132	public void reconnectAccountInBackground(final Account account) {
2133		new Thread(new Runnable() {
2134			@Override
2135			public void run() {
2136				reconnectAccount(account,false);
2137			}
2138		}).start();
2139	}
2140
2141	public void invite(Conversation conversation, Jid contact) {
2142		Log.d(Config.LOGTAG,conversation.getAccount().getJid().toBareJid()+": inviting "+contact+" to "+conversation.getJid().toBareJid());
2143		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
2144		sendMessagePacket(conversation.getAccount(), packet);
2145	}
2146
2147	public void directInvite(Conversation conversation, Jid jid) {
2148		MessagePacket packet = mMessageGenerator.directInvite(conversation, jid);
2149		sendMessagePacket(conversation.getAccount(),packet);
2150	}
2151
2152	public void resetSendingToWaiting(Account account) {
2153		for (Conversation conversation : getConversations()) {
2154			if (conversation.getAccount() == account) {
2155				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
2156
2157					@Override
2158					public void onMessageFound(Message message) {
2159						markMessage(message, Message.STATUS_WAITING);
2160					}
2161				});
2162			}
2163		}
2164	}
2165
2166	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status) {
2167		if (uuid == null) {
2168			return null;
2169		}
2170		for (Conversation conversation : getConversations()) {
2171			if (conversation.getJid().toBareJid().equals(recipient) && conversation.getAccount() == account) {
2172				final Message message = conversation.findSentMessageWithUuid(uuid);
2173				if (message != null) {
2174					markMessage(message, status);
2175				}
2176				return message;
2177			}
2178		}
2179		return null;
2180	}
2181
2182	public boolean markMessage(Conversation conversation, String uuid,
2183							   int status) {
2184		if (uuid == null) {
2185			return false;
2186		} else {
2187			Message message = conversation.findSentMessageWithUuid(uuid);
2188			if (message != null) {
2189				markMessage(message, status);
2190				return true;
2191			} else {
2192				return false;
2193			}
2194		}
2195	}
2196
2197	public void markMessage(Message message, int status) {
2198		if (status == Message.STATUS_SEND_FAILED
2199				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
2200				.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
2201			return;
2202		}
2203		message.setStatus(status);
2204		databaseBackend.updateMessage(message);
2205		updateConversationUi();
2206	}
2207
2208	public SharedPreferences getPreferences() {
2209		return PreferenceManager
2210				.getDefaultSharedPreferences(getApplicationContext());
2211	}
2212
2213	public boolean forceEncryption() {
2214		return getPreferences().getBoolean("force_encryption", false);
2215	}
2216
2217	public boolean confirmMessages() {
2218		return getPreferences().getBoolean("confirm_messages", true);
2219	}
2220
2221	public boolean sendChatStates() {
2222		return getPreferences().getBoolean("chat_states", false);
2223	}
2224
2225	public boolean saveEncryptedMessages() {
2226		return !getPreferences().getBoolean("dont_save_encrypted", false);
2227	}
2228
2229	public boolean indicateReceived() {
2230		return getPreferences().getBoolean("indicate_received", false);
2231	}
2232
2233	public int unreadCount() {
2234		int count = 0;
2235		for(Conversation conversation : getConversations()) {
2236			count += conversation.unreadCount();
2237		}
2238		return count;
2239	}
2240
2241	public void updateConversationUi() {
2242		if (mOnConversationUpdate != null) {
2243			mOnConversationUpdate.onConversationUpdate();
2244		}
2245	}
2246
2247	public void updateAccountUi() {
2248		if (mOnAccountUpdate != null) {
2249			mOnAccountUpdate.onAccountUpdate();
2250		}
2251	}
2252
2253	public void updateRosterUi() {
2254		if (mOnRosterUpdate != null) {
2255			mOnRosterUpdate.onRosterUpdate();
2256		}
2257	}
2258
2259	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
2260		if (mOnUpdateBlocklist != null) {
2261			mOnUpdateBlocklist.OnUpdateBlocklist(status);
2262		}
2263	}
2264
2265	public void updateMucRosterUi() {
2266		if (mOnMucRosterUpdate != null) {
2267			mOnMucRosterUpdate.onMucRosterUpdate();
2268		}
2269	}
2270
2271	public Account findAccountByJid(final Jid accountJid) {
2272		for (Account account : this.accounts) {
2273			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
2274				return account;
2275			}
2276		}
2277		return null;
2278	}
2279
2280	public Conversation findConversationByUuid(String uuid) {
2281		for (Conversation conversation : getConversations()) {
2282			if (conversation.getUuid().equals(uuid)) {
2283				return conversation;
2284			}
2285		}
2286		return null;
2287	}
2288
2289	public void markRead(final Conversation conversation) {
2290		mNotificationService.clear(conversation);
2291		conversation.markRead();
2292		updateUnreadCountBadge();
2293	}
2294
2295	public synchronized void updateUnreadCountBadge() {
2296		int count = unreadCount();
2297		if (unreadCount != count) {
2298			Log.d(Config.LOGTAG, "update unread count to " + count);
2299			if (count > 0) {
2300				ShortcutBadger.with(getApplicationContext()).count(count);
2301			} else {
2302				ShortcutBadger.with(getApplicationContext()).remove();
2303			}
2304			unreadCount = count;
2305		}
2306	}
2307
2308	public void sendReadMarker(final Conversation conversation) {
2309		final Message markable = conversation.getLatestMarkableMessage();
2310		this.markRead(conversation);
2311		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null) {
2312			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": sending read marker to " + markable.getCounterpart().toString());
2313			Account account = conversation.getAccount();
2314			final Jid to = markable.getCounterpart();
2315			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
2316			this.sendMessagePacket(conversation.getAccount(), packet);
2317		}
2318		updateConversationUi();
2319	}
2320
2321	public SecureRandom getRNG() {
2322		return this.mRandom;
2323	}
2324
2325	public MemorizingTrustManager getMemorizingTrustManager() {
2326		return this.mMemorizingTrustManager;
2327	}
2328
2329	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
2330		this.mMemorizingTrustManager = trustManager;
2331	}
2332
2333	public void updateMemorizingTrustmanager() {
2334		final MemorizingTrustManager tm;
2335		final boolean dontTrustSystemCAs = getPreferences().getBoolean("dont_trust_system_cas", false);
2336		if (dontTrustSystemCAs) {
2337			 tm = new MemorizingTrustManager(getApplicationContext(), null);
2338		} else {
2339			tm = new MemorizingTrustManager(getApplicationContext());
2340		}
2341		setMemorizingTrustManager(tm);
2342	}
2343
2344	public PowerManager getPowerManager() {
2345		return this.pm;
2346	}
2347
2348	public LruCache<String, Bitmap> getBitmapCache() {
2349		return this.mBitmapCache;
2350	}
2351
2352	public void syncRosterToDisk(final Account account) {
2353		Runnable runnable = new Runnable() {
2354
2355			@Override
2356			public void run() {
2357				databaseBackend.writeRoster(account.getRoster());
2358			}
2359		};
2360		mDatabaseExecutor.execute(runnable);
2361
2362	}
2363
2364	public List<String> getKnownHosts() {
2365		final List<String> hosts = new ArrayList<>();
2366		for (final Account account : getAccounts()) {
2367			if (!hosts.contains(account.getServer().toString())) {
2368				hosts.add(account.getServer().toString());
2369			}
2370			for (final Contact contact : account.getRoster().getContacts()) {
2371				if (contact.showInRoster()) {
2372					final String server = contact.getServer().toString();
2373					if (server != null && !hosts.contains(server)) {
2374						hosts.add(server);
2375					}
2376				}
2377			}
2378		}
2379		return hosts;
2380	}
2381
2382	public List<String> getKnownConferenceHosts() {
2383		final ArrayList<String> mucServers = new ArrayList<>();
2384		for (final Account account : accounts) {
2385			if (account.getXmppConnection() != null) {
2386				final String server = account.getXmppConnection().getMucServer();
2387				if (server != null && !mucServers.contains(server)) {
2388					mucServers.add(server);
2389				}
2390			}
2391		}
2392		return mucServers;
2393	}
2394
2395	public void sendMessagePacket(Account account, MessagePacket packet) {
2396		XmppConnection connection = account.getXmppConnection();
2397		if (connection != null) {
2398			connection.sendMessagePacket(packet);
2399		}
2400	}
2401
2402	public void sendPresencePacket(Account account, PresencePacket packet) {
2403		XmppConnection connection = account.getXmppConnection();
2404		if (connection != null) {
2405			connection.sendPresencePacket(packet);
2406		}
2407	}
2408
2409	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
2410		final XmppConnection connection = account.getXmppConnection();
2411		if (connection != null) {
2412			connection.sendIqPacket(packet, callback);
2413		}
2414	}
2415
2416	public void sendPresence(final Account account) {
2417		sendPresencePacket(account, mPresenceGenerator.sendPresence(account));
2418	}
2419
2420	public void sendOfflinePresence(final Account account) {
2421		sendPresencePacket(account, mPresenceGenerator.sendOfflinePresence(account));
2422	}
2423
2424	public MessageGenerator getMessageGenerator() {
2425		return this.mMessageGenerator;
2426	}
2427
2428	public PresenceGenerator getPresenceGenerator() {
2429		return this.mPresenceGenerator;
2430	}
2431
2432	public IqGenerator getIqGenerator() {
2433		return this.mIqGenerator;
2434	}
2435
2436	public IqParser getIqParser() {
2437		return this.mIqParser;
2438	}
2439
2440	public JingleConnectionManager getJingleConnectionManager() {
2441		return this.mJingleConnectionManager;
2442	}
2443
2444	public MessageArchiveService getMessageArchiveService() {
2445		return this.mMessageArchiveService;
2446	}
2447
2448	public List<Contact> findContacts(Jid jid) {
2449		ArrayList<Contact> contacts = new ArrayList<>();
2450		for (Account account : getAccounts()) {
2451			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2452				Contact contact = account.getRoster().getContactFromRoster(jid);
2453				if (contact != null) {
2454					contacts.add(contact);
2455				}
2456			}
2457		}
2458		return contacts;
2459	}
2460
2461	public NotificationService getNotificationService() {
2462		return this.mNotificationService;
2463	}
2464
2465	public HttpConnectionManager getHttpConnectionManager() {
2466		return this.mHttpConnectionManager;
2467	}
2468
2469	public void resendFailedMessages(final Message message) {
2470		final Collection<Message> messages = new ArrayList<>();
2471		Message current = message;
2472		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2473			messages.add(current);
2474			if (current.mergeable(current.next())) {
2475				current = current.next();
2476			} else {
2477				break;
2478			}
2479		}
2480		for (final Message msg : messages) {
2481			markMessage(msg, Message.STATUS_WAITING);
2482			this.resendMessage(msg);
2483		}
2484	}
2485
2486	public void clearConversationHistory(final Conversation conversation) {
2487		conversation.clearMessages();
2488		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
2489		new Thread(new Runnable() {
2490			@Override
2491			public void run() {
2492				databaseBackend.deleteMessagesInConversation(conversation);
2493			}
2494		}).start();
2495	}
2496
2497	public void sendBlockRequest(final Blockable blockable) {
2498		if (blockable != null && blockable.getBlockedJid() != null) {
2499			final Jid jid = blockable.getBlockedJid();
2500			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid), new OnIqPacketReceived() {
2501
2502				@Override
2503				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2504					if (packet.getType() == IqPacket.TYPE.RESULT) {
2505						account.getBlocklist().add(jid);
2506						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
2507					}
2508				}
2509			});
2510		}
2511	}
2512
2513	public void sendUnblockRequest(final Blockable blockable) {
2514		if (blockable != null && blockable.getJid() != null) {
2515			final Jid jid = blockable.getBlockedJid();
2516			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
2517				@Override
2518				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2519					if (packet.getType() == IqPacket.TYPE.RESULT) {
2520						account.getBlocklist().remove(jid);
2521						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
2522					}
2523				}
2524			});
2525		}
2526	}
2527
2528	public interface OnMoreMessagesLoaded {
2529		public void onMoreMessagesLoaded(int count, Conversation conversation);
2530
2531		public void informUser(int r);
2532	}
2533
2534	public interface OnAccountPasswordChanged {
2535		public void onPasswordChangeSucceeded();
2536
2537		public void onPasswordChangeFailed();
2538	}
2539
2540	public interface OnAffiliationChanged {
2541		public void onAffiliationChangedSuccessful(Jid jid);
2542
2543		public void onAffiliationChangeFailed(Jid jid, int resId);
2544	}
2545
2546	public interface OnRoleChanged {
2547		public void onRoleChangedSuccessful(String nick);
2548
2549		public void onRoleChangeFailed(String nick, int resid);
2550	}
2551
2552	public interface OnConversationUpdate {
2553		public void onConversationUpdate();
2554	}
2555
2556	public interface OnAccountUpdate {
2557		public void onAccountUpdate();
2558	}
2559
2560	public interface OnRosterUpdate {
2561		public void onRosterUpdate();
2562	}
2563
2564	public interface OnMucRosterUpdate {
2565		public void onMucRosterUpdate();
2566	}
2567
2568	public interface OnConferenceOptionsPushed {
2569		public void onPushSucceeded();
2570
2571		public void onPushFailed();
2572	}
2573
2574	public class XmppConnectionBinder extends Binder {
2575		public XmppConnectionService getService() {
2576			return XmppConnectionService.this;
2577		}
2578	}
2579}