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.SessionImpl;
  32import net.java.otr4j.session.SessionStatus;
  33
  34import org.openintents.openpgp.util.OpenPgpApi;
  35import org.openintents.openpgp.util.OpenPgpServiceConnection;
  36
  37import java.math.BigInteger;
  38import java.security.SecureRandom;
  39import java.util.ArrayList;
  40import java.util.Arrays;
  41import java.util.Collection;
  42import java.util.Collections;
  43import java.util.Comparator;
  44import java.util.Hashtable;
  45import java.util.Iterator;
  46import java.util.List;
  47import java.util.Locale;
  48import java.util.Map;
  49import java.util.concurrent.CopyOnWriteArrayList;
  50
  51import de.duenndns.ssl.MemorizingTrustManager;
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.crypto.PgpEngine;
  55import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  56import eu.siacs.conversations.entities.Account;
  57import eu.siacs.conversations.entities.Blockable;
  58import eu.siacs.conversations.entities.Bookmark;
  59import eu.siacs.conversations.entities.Contact;
  60import eu.siacs.conversations.entities.Conversation;
  61import eu.siacs.conversations.entities.Message;
  62import eu.siacs.conversations.entities.MucOptions;
  63import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  64import eu.siacs.conversations.entities.Transferable;
  65import eu.siacs.conversations.entities.TransferablePlaceholder;
  66import eu.siacs.conversations.generator.IqGenerator;
  67import eu.siacs.conversations.generator.MessageGenerator;
  68import eu.siacs.conversations.generator.PresenceGenerator;
  69import eu.siacs.conversations.http.HttpConnectionManager;
  70import eu.siacs.conversations.parser.IqParser;
  71import eu.siacs.conversations.parser.MessageParser;
  72import eu.siacs.conversations.parser.PresenceParser;
  73import eu.siacs.conversations.persistance.DatabaseBackend;
  74import eu.siacs.conversations.persistance.FileBackend;
  75import eu.siacs.conversations.ui.UiCallback;
  76import eu.siacs.conversations.utils.CryptoHelper;
  77import eu.siacs.conversations.utils.ExceptionHelper;
  78import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  79import eu.siacs.conversations.utils.PRNGFixes;
  80import eu.siacs.conversations.utils.PhoneHelper;
  81import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
  82import eu.siacs.conversations.utils.Xmlns;
  83import eu.siacs.conversations.xml.Element;
  84import eu.siacs.conversations.xmpp.OnBindListener;
  85import eu.siacs.conversations.xmpp.OnContactStatusChanged;
  86import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  87import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
  88import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  89import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  90import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  91import eu.siacs.conversations.xmpp.OnStatusChanged;
  92import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  93import eu.siacs.conversations.xmpp.XmppConnection;
  94import eu.siacs.conversations.xmpp.chatstate.ChatState;
  95import eu.siacs.conversations.xmpp.forms.Data;
  96import eu.siacs.conversations.xmpp.forms.Field;
  97import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  98import eu.siacs.conversations.xmpp.jid.Jid;
  99import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 100import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
 101import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
 102import eu.siacs.conversations.xmpp.pep.Avatar;
 103import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 104import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 105import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 106import me.leolin.shortcutbadger.ShortcutBadger;
 107
 108public class XmppConnectionService extends Service implements OnPhoneContactsLoadedListener {
 109
 110	public static final String ACTION_CLEAR_NOTIFICATION = "clear_notification";
 111	public static final String ACTION_DISABLE_FOREGROUND = "disable_foreground";
 112	private static final String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
 113	public static final String ACTION_TRY_AGAIN = "try_again";
 114	public static final String ACTION_DISABLE_ACCOUNT = "disable_account";
 115	private ContentObserver contactObserver = new ContentObserver(null) {
 116		@Override
 117		public void onChange(boolean selfChange) {
 118			super.onChange(selfChange);
 119			Intent intent = new Intent(getApplicationContext(),
 120					XmppConnectionService.class);
 121			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 122			startService(intent);
 123		}
 124	};
 125
 126	private final SerialSingleThreadExecutor mFileAddingExecutor = new SerialSingleThreadExecutor();
 127	private final SerialSingleThreadExecutor mDatabaseExecutor = new SerialSingleThreadExecutor();
 128
 129	private final IBinder mBinder = new XmppConnectionBinder();
 130	private final List<Conversation> conversations = new CopyOnWriteArrayList<>();
 131	private final FileObserver fileObserver = new FileObserver(
 132			FileBackend.getConversationsImageDirectory()) {
 133
 134		@Override
 135		public void onEvent(int event, String path) {
 136			if (event == FileObserver.DELETE) {
 137				markFileDeleted(path.split("\\.")[0]);
 138			}
 139		}
 140	};
 141	private final OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 142
 143		@Override
 144		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 145			mJingleConnectionManager.deliverPacket(account, packet);
 146		}
 147	};
 148	private final OnBindListener mOnBindListener = new OnBindListener() {
 149
 150		@Override
 151		public void onBind(final Account account) {
 152			account.getRoster().clearPresences();
 153			account.pendingConferenceJoins.clear();
 154			account.pendingConferenceLeaves.clear();
 155			fetchRosterFromServer(account);
 156			fetchBookmarks(account);
 157			sendPresence(account);
 158			connectMultiModeConversations(account);
 159			updateConversationUi();
 160		}
 161	};
 162	private final OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
 163
 164		@Override
 165		public void onMessageAcknowledged(Account account, String uuid) {
 166			for (final Conversation conversation : getConversations()) {
 167				if (conversation.getAccount() == account) {
 168					Message message = conversation.findUnsentMessageWithUuid(uuid);
 169					if (message != null) {
 170						markMessage(message, Message.STATUS_SEND);
 171						if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
 172							databaseBackend.updateConversation(conversation);
 173						}
 174					}
 175				}
 176			}
 177		}
 178	};
 179	private final IqGenerator mIqGenerator = new IqGenerator(this);
 180	public DatabaseBackend databaseBackend;
 181	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 182
 183		@Override
 184		public void onContactStatusChanged(Contact contact, boolean online) {
 185			Conversation conversation = find(getConversations(), contact);
 186			if (conversation != null) {
 187				if (online) {
 188					conversation.endOtrIfNeeded();
 189					if (contact.getPresences().size() == 1) {
 190						sendUnsentMessages(conversation);
 191					}
 192				} else {
 193					if (contact.getPresences().size() >= 1) {
 194						if (conversation.hasValidOtrSession()) {
 195							String otrResource = conversation.getOtrSession().getSessionID().getUserID();
 196							if (!(Arrays.asList(contact.getPresences().asStringArray()).contains(otrResource))) {
 197								conversation.endOtrIfNeeded();
 198							}
 199						}
 200					} else {
 201						conversation.endOtrIfNeeded();
 202					}
 203				}
 204			}
 205		}
 206	};
 207	private FileBackend fileBackend = new FileBackend(this);
 208	private MemorizingTrustManager mMemorizingTrustManager;
 209	private NotificationService mNotificationService = new NotificationService(
 210			this);
 211	private OnMessagePacketReceived mMessageParser = new MessageParser(this);
 212	private OnPresencePacketReceived mPresenceParser = new PresenceParser(this);
 213	private IqParser mIqParser = new IqParser(this);
 214	private OnIqPacketReceived mDefaultIqHandler = new OnIqPacketReceived() {
 215		@Override
 216		public void onIqPacketReceived(Account account, IqPacket packet) {
 217			if (packet.getType() == IqPacket.TYPE.ERROR) {
 218				Element error = packet.findChild("error");
 219				String text = error != null ? error.findChildContent("text") : null;
 220				if (text != null) {
 221					Log.d(Config.LOGTAG,account.getJid().toBareJid()+": received iq error - "+text);
 222				}
 223			}
 224		}
 225	};
 226	private MessageGenerator mMessageGenerator = new MessageGenerator(this);
 227	private PresenceGenerator mPresenceGenerator = new PresenceGenerator(this);
 228	private List<Account> accounts;
 229	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
 230			this);
 231	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
 232			this);
 233	private AvatarService mAvatarService = new AvatarService(this);
 234	private final List<String> mInProgressAvatarFetches = new ArrayList<>();
 235	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 236	private OnConversationUpdate mOnConversationUpdate = null;
 237	private int convChangedListenerCount = 0;
 238	private OnShowErrorToast mOnShowErrorToast = null;
 239	private int showErrorToastListenerCount = 0;
 240	private int unreadCount = -1;
 241	private OnAccountUpdate mOnAccountUpdate = null;
 242	private OnStatusChanged statusListener = new OnStatusChanged() {
 243
 244		@Override
 245		public void onStatusChanged(Account account) {
 246			XmppConnection connection = account.getXmppConnection();
 247			if (mOnAccountUpdate != null) {
 248				mOnAccountUpdate.onAccountUpdate();
 249			}
 250			if (account.getStatus() == Account.State.ONLINE) {
 251				for (Conversation conversation : account.pendingConferenceLeaves) {
 252					leaveMuc(conversation);
 253				}
 254				for (Conversation conversation : account.pendingConferenceJoins) {
 255					joinMuc(conversation);
 256				}
 257				mMessageArchiveService.executePendingQueries(account);
 258				mJingleConnectionManager.cancelInTransmission();
 259				List<Conversation> conversations = getConversations();
 260				for (Conversation conversation : conversations) {
 261					if (conversation.getAccount() == account) {
 262						conversation.startOtrIfNeeded();
 263						sendUnsentMessages(conversation);
 264					}
 265				}
 266				if (connection != null && connection.getFeatures().csi()) {
 267					if (checkListeners()) {
 268						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 269								+ " sending csi//inactive");
 270						connection.sendInactive();
 271					} else {
 272						Log.d(Config.LOGTAG, account.getJid().toBareJid()
 273								+ " sending csi//active");
 274						connection.sendActive();
 275					}
 276				}
 277				syncDirtyContacts(account);
 278				account.getAxolotlService().publishOwnDeviceIdIfNeeded();
 279				account.getAxolotlService().publishBundlesIfNeeded();
 280
 281				scheduleWakeUpCall(Config.PING_MAX_INTERVAL, account.getUuid().hashCode());
 282			} else if (account.getStatus() == Account.State.OFFLINE) {
 283				resetSendingToWaiting(account);
 284				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 285					int timeToReconnect = mRandom.nextInt(50) + 10;
 286					scheduleWakeUpCall(timeToReconnect,account.getUuid().hashCode());
 287				}
 288			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
 289				databaseBackend.updateAccount(account);
 290				reconnectAccount(account, true);
 291			} else if ((account.getStatus() != Account.State.CONNECTING)
 292					&& (account.getStatus() != Account.State.NO_INTERNET)) {
 293				if (connection != null) {
 294					int next = connection.getTimeToNextAttempt();
 295					Log.d(Config.LOGTAG, account.getJid().toBareJid()
 296							+ ": error connecting account. try again in "
 297							+ next + "s for the "
 298							+ (connection.getAttempt() + 1) + " time");
 299					scheduleWakeUpCall(next,account.getUuid().hashCode());
 300				}
 301					}
 302			getNotificationService().updateErrorNotification();
 303		}
 304	};
 305	private int accountChangedListenerCount = 0;
 306	private OnRosterUpdate mOnRosterUpdate = null;
 307	private OnUpdateBlocklist mOnUpdateBlocklist = null;
 308	private int updateBlocklistListenerCount = 0;
 309	private int rosterChangedListenerCount = 0;
 310	private OnMucRosterUpdate mOnMucRosterUpdate = null;
 311	private int mucRosterChangedListenerCount = 0;
 312	private OnKeyStatusUpdated mOnKeyStatusUpdated = null;
 313	private int keyStatusUpdatedListenerCount = 0;
 314	private SecureRandom mRandom;
 315	private OpenPgpServiceConnection pgpServiceConnection;
 316	private PgpEngine mPgpEngine = null;
 317	private WakeLock wakeLock;
 318	private PowerManager pm;
 319	private LruCache<String, Bitmap> mBitmapCache;
 320	private Thread mPhoneContactMergerThread;
 321
 322	private boolean mRestoredFromDatabase = false;
 323	public boolean areMessagesInitialized() {
 324		return this.mRestoredFromDatabase;
 325	}
 326
 327	public PgpEngine getPgpEngine() {
 328		if (pgpServiceConnection.isBound()) {
 329			if (this.mPgpEngine == null) {
 330				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 331							getApplicationContext(),
 332							pgpServiceConnection.getService()), this);
 333			}
 334			return mPgpEngine;
 335		} else {
 336			return null;
 337		}
 338
 339	}
 340
 341	public FileBackend getFileBackend() {
 342		return this.fileBackend;
 343	}
 344
 345	public AvatarService getAvatarService() {
 346		return this.mAvatarService;
 347	}
 348
 349	public void attachLocationToConversation(final Conversation conversation,
 350											 final Uri uri,
 351											 final UiCallback<Message> callback) {
 352		int encryption = conversation.getNextEncryption();
 353		if (encryption == Message.ENCRYPTION_PGP) {
 354			encryption = Message.ENCRYPTION_DECRYPTED;
 355		}
 356		Message message = new Message(conversation,uri.toString(),encryption);
 357		if (conversation.getNextCounterpart() != null) {
 358			message.setCounterpart(conversation.getNextCounterpart());
 359		}
 360		if (encryption == Message.ENCRYPTION_DECRYPTED) {
 361			getPgpEngine().encrypt(message, callback);
 362		} else {
 363			callback.success(message);
 364		}
 365	}
 366
 367	public void attachFileToConversation(final Conversation conversation,
 368			final Uri uri,
 369			final UiCallback<Message> callback) {
 370		final Message message;
 371		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 372			message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
 373		} else {
 374			message = new Message(conversation, "", conversation.getNextEncryption());
 375		}
 376		message.setCounterpart(conversation.getNextCounterpart());
 377		message.setType(Message.TYPE_FILE);
 378		String path = getFileBackend().getOriginalPath(uri);
 379		if (path!=null) {
 380			message.setRelativeFilePath(path);
 381			getFileBackend().updateFileParams(message);
 382			if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 383				getPgpEngine().encrypt(message, callback);
 384			} else {
 385				callback.success(message);
 386			}
 387		} else {
 388			mFileAddingExecutor.execute(new Runnable() {
 389				@Override
 390				public void run() {
 391					try {
 392						getFileBackend().copyFileToPrivateStorage(message, uri);
 393						getFileBackend().updateFileParams(message);
 394						if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 395							getPgpEngine().encrypt(message, callback);
 396						} else {
 397							callback.success(message);
 398						}
 399					} catch (FileBackend.FileCopyException e) {
 400						callback.error(e.getResId(), message);
 401					}
 402				}
 403			});
 404		}
 405	}
 406
 407	public void attachImageToConversation(final Conversation conversation,
 408			final Uri uri, final UiCallback<Message> callback) {
 409		final Message message;
 410		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 411			message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
 412		} else {
 413			message = new Message(conversation, "",conversation.getNextEncryption());
 414		}
 415		message.setCounterpart(conversation.getNextCounterpart());
 416		message.setType(Message.TYPE_IMAGE);
 417		mFileAddingExecutor.execute(new Runnable() {
 418
 419			@Override
 420			public void run() {
 421				try {
 422					getFileBackend().copyImageToPrivateStorage(message, uri);
 423					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 424						getPgpEngine().encrypt(message, callback);
 425					} else {
 426						callback.success(message);
 427					}
 428				} catch (final FileBackend.FileCopyException e) {
 429					callback.error(e.getResId(), message);
 430				}
 431			}
 432		});
 433	}
 434
 435	public Conversation find(Bookmark bookmark) {
 436		return find(bookmark.getAccount(), bookmark.getJid());
 437	}
 438
 439	public Conversation find(final Account account, final Jid jid) {
 440		return find(getConversations(), account, jid);
 441	}
 442
 443	@Override
 444	public int onStartCommand(Intent intent, int flags, int startId) {
 445		final String action = intent == null ? null : intent.getAction();
 446		if (action != null) {
 447			switch (action) {
 448				case ConnectivityManager.CONNECTIVITY_ACTION:
 449					if (hasInternetConnection() && Config.RESET_ATTEMPT_COUNT_ON_NETWORK_CHANGE) {
 450						resetAllAttemptCounts(true);
 451					}
 452					break;
 453				case ACTION_MERGE_PHONE_CONTACTS:
 454					if (mRestoredFromDatabase) {
 455						PhoneHelper.loadPhoneContacts(getApplicationContext(),
 456								new CopyOnWriteArrayList<Bundle>(),
 457								this);
 458					}
 459					return START_STICKY;
 460				case Intent.ACTION_SHUTDOWN:
 461					logoutAndSave();
 462					return START_NOT_STICKY;
 463				case ACTION_CLEAR_NOTIFICATION:
 464					mNotificationService.clear();
 465					break;
 466				case ACTION_DISABLE_FOREGROUND:
 467					getPreferences().edit().putBoolean("keep_foreground_service",false).commit();
 468					toggleForegroundService();
 469					break;
 470				case ACTION_TRY_AGAIN:
 471					resetAllAttemptCounts(false);
 472					break;
 473				case ACTION_DISABLE_ACCOUNT:
 474					try {
 475						String jid = intent.getStringExtra("account");
 476						Account account = jid == null ? null : findAccountByJid(Jid.fromString(jid));
 477						if (account != null) {
 478							account.setOption(Account.OPTION_DISABLED,true);
 479							updateAccount(account);
 480						}
 481					} catch (final InvalidJidException ignored) {
 482						break;
 483					}
 484					break;
 485			}
 486		}
 487		this.wakeLock.acquire();
 488
 489		for (Account account : accounts) {
 490			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 491				if (!hasInternetConnection()) {
 492					account.setStatus(Account.State.NO_INTERNET);
 493					if (statusListener != null) {
 494						statusListener.onStatusChanged(account);
 495					}
 496				} else {
 497					if (account.getStatus() == Account.State.NO_INTERNET) {
 498						account.setStatus(Account.State.OFFLINE);
 499						if (statusListener != null) {
 500							statusListener.onStatusChanged(account);
 501						}
 502					}
 503					if (account.getStatus() == Account.State.ONLINE) {
 504						long lastReceived = account.getXmppConnection().getLastPacketReceived();
 505						long lastSent = account.getXmppConnection().getLastPingSent();
 506						long pingInterval = "ui".equals(action) ? Config.PING_MIN_INTERVAL * 1000 : Config.PING_MAX_INTERVAL * 1000;
 507						long msToNextPing = (Math.max(lastReceived,lastSent) + pingInterval) - SystemClock.elapsedRealtime();
 508						long pingTimeoutIn = (lastSent + Config.PING_TIMEOUT * 1000) - SystemClock.elapsedRealtime();
 509						if (lastSent > lastReceived) {
 510							if (pingTimeoutIn < 0) {
 511								Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": ping timeout");
 512								this.reconnectAccount(account, true);
 513							} else {
 514								int secs = (int) (pingTimeoutIn / 1000);
 515								this.scheduleWakeUpCall(secs,account.getUuid().hashCode());
 516							}
 517						} else if (msToNextPing <= 0) {
 518							account.getXmppConnection().sendPing();
 519							Log.d(Config.LOGTAG, account.getJid().toBareJid()+" send ping");
 520							this.scheduleWakeUpCall(Config.PING_TIMEOUT,account.getUuid().hashCode());
 521						} else {
 522							this.scheduleWakeUpCall((int) (msToNextPing / 1000), account.getUuid().hashCode());
 523						}
 524					} else if (account.getStatus() == Account.State.OFFLINE) {
 525						reconnectAccount(account,true);
 526					} else if (account.getStatus() == Account.State.CONNECTING) {
 527						long timeout = Config.CONNECT_TIMEOUT - ((SystemClock.elapsedRealtime() - account.getXmppConnection().getLastConnect()) / 1000);
 528						if (timeout < 0) {
 529							Log.d(Config.LOGTAG, account.getJid() + ": time out during connect reconnecting");
 530							reconnectAccount(account, true);
 531						} else {
 532							scheduleWakeUpCall((int) timeout,account.getUuid().hashCode());
 533						}
 534					} else {
 535						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 536							reconnectAccount(account, true);
 537						}
 538					}
 539
 540				}
 541				if (mOnAccountUpdate != null) {
 542					mOnAccountUpdate.onAccountUpdate();
 543				}
 544			}
 545		}
 546		/*PowerManager pm = (PowerManager) this.getSystemService(Context.POWER_SERVICE);
 547			if (!pm.isScreenOn()) {
 548			removeStaleListeners();
 549			}*/
 550		if (wakeLock.isHeld()) {
 551			try {
 552				wakeLock.release();
 553			} catch (final RuntimeException ignored) {
 554			}
 555		}
 556		return START_STICKY;
 557	}
 558
 559	private void resetAllAttemptCounts(boolean reallyAll) {
 560		Log.d(Config.LOGTAG,"resetting all attepmt counts");
 561		for(Account account : accounts) {
 562			if (account.hasErrorStatus() || reallyAll) {
 563				final XmppConnection connection = account.getXmppConnection();
 564				if (connection != null) {
 565					connection.resetAttemptCount();
 566				}
 567			}
 568		}
 569	}
 570
 571	public boolean hasInternetConnection() {
 572		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 573			.getSystemService(Context.CONNECTIVITY_SERVICE);
 574		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 575		return activeNetwork != null && activeNetwork.isConnected();
 576	}
 577
 578	@SuppressLint("TrulyRandom")
 579	@Override
 580	public void onCreate() {
 581		ExceptionHelper.init(getApplicationContext());
 582		PRNGFixes.apply();
 583		this.mRandom = new SecureRandom();
 584		updateMemorizingTrustmanager();
 585		final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 586		final int cacheSize = maxMemory / 8;
 587		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
 588			@Override
 589			protected int sizeOf(final String key, final Bitmap bitmap) {
 590				return bitmap.getByteCount() / 1024;
 591			}
 592		};
 593
 594		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 595		this.accounts = databaseBackend.getAccounts();
 596
 597		restoreFromDatabase();
 598
 599		getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 600		this.fileObserver.startWatching();
 601		this.pgpServiceConnection = new OpenPgpServiceConnection(getApplicationContext(), "org.sufficientlysecure.keychain");
 602		this.pgpServiceConnection.bindToService();
 603
 604		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 605		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"XmppConnectionService");
 606		toggleForegroundService();
 607		updateUnreadCountBadge();
 608	}
 609
 610	public void toggleForegroundService() {
 611		if (getPreferences().getBoolean("keep_foreground_service",false)) {
 612			startForeground(NotificationService.FOREGROUND_NOTIFICATION_ID, this.mNotificationService.createForegroundNotification());
 613		} else {
 614			stopForeground(true);
 615		}
 616	}
 617
 618	@Override
 619	public void onTaskRemoved(final Intent rootIntent) {
 620		super.onTaskRemoved(rootIntent);
 621		if (!getPreferences().getBoolean("keep_foreground_service",false)) {
 622			this.logoutAndSave();
 623		}
 624	}
 625
 626	private void logoutAndSave() {
 627		for (final Account account : accounts) {
 628			databaseBackend.writeRoster(account.getRoster());
 629			if (account.getXmppConnection() != null) {
 630				disconnect(account, false);
 631			}
 632		}
 633		Context context = getApplicationContext();
 634		AlarmManager alarmManager = (AlarmManager) context
 635				.getSystemService(Context.ALARM_SERVICE);
 636		Intent intent = new Intent(context, EventReceiver.class);
 637		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 638		Log.d(Config.LOGTAG, "good bye");
 639		stopSelf();
 640	}
 641
 642	protected void scheduleWakeUpCall(int seconds, int requestCode) {
 643		final long timeToWake = SystemClock.elapsedRealtime() + (seconds < 0 ? 1 : seconds + 1) * 1000;
 644
 645		Context context = getApplicationContext();
 646		AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
 647
 648		Intent intent = new Intent(context, EventReceiver.class);
 649		intent.setAction("ping");
 650		PendingIntent alarmIntent = PendingIntent.getBroadcast(context, requestCode, intent, 0);
 651		alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake, alarmIntent);
 652	}
 653
 654	public XmppConnection createConnection(final Account account) {
 655		final SharedPreferences sharedPref = getPreferences();
 656		account.setResource(sharedPref.getString("resource", "mobile")
 657				.toLowerCase(Locale.getDefault()));
 658		final XmppConnection connection = new XmppConnection(account, this);
 659		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 660		connection.setOnStatusChangedListener(this.statusListener);
 661		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
 662		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 663		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 664		connection.setOnBindListener(this.mOnBindListener);
 665		connection.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 666		connection.addOnAdvancedStreamFeaturesAvailableListener(this.mMessageArchiveService);
 667		return connection;
 668	}
 669
 670	public void sendChatState(Conversation conversation) {
 671		if (sendChatStates()) {
 672			MessagePacket packet = mMessageGenerator.generateChatState(conversation);
 673			sendMessagePacket(conversation.getAccount(), packet);
 674		}
 675	}
 676
 677	private void sendFileMessage(final Message message, final boolean delay) {
 678		Log.d(Config.LOGTAG, "send file message");
 679		final Account account = message.getConversation().getAccount();
 680		final XmppConnection connection = account.getXmppConnection();
 681		if (connection != null && connection.getFeatures().httpUpload()) {
 682			mHttpConnectionManager.createNewUploadConnection(message, delay);
 683		} else {
 684			mJingleConnectionManager.createNewConnection(message);
 685		}
 686	}
 687
 688	public void sendMessage(final Message message) {
 689		sendMessage(message, false, false);
 690	}
 691
 692	private void sendMessage(final Message message, final boolean resend, final boolean delay) {
 693		final Account account = message.getConversation().getAccount();
 694		final Conversation conversation = message.getConversation();
 695		account.deactivateGracePeriod();
 696		MessagePacket packet = null;
 697		boolean saveInDb = true;
 698		message.setStatus(Message.STATUS_WAITING);
 699
 700		if (!resend && message.getEncryption() != Message.ENCRYPTION_OTR) {
 701			message.getConversation().endOtrIfNeeded();
 702			message.getConversation().findUnsentMessagesWithEncryption(Message.ENCRYPTION_OTR,
 703					new Conversation.OnMessageFound() {
 704				@Override
 705				public void onMessageFound(Message message) {
 706					markMessage(message,Message.STATUS_SEND_FAILED);
 707				}
 708			});
 709		}
 710
 711		if (account.isOnlineAndConnected()) {
 712			switch (message.getEncryption()) {
 713				case Message.ENCRYPTION_NONE:
 714					if (message.needsUploading()) {
 715						if (account.httpUploadAvailable() || message.fixCounterpart()) {
 716							this.sendFileMessage(message,delay);
 717						} else {
 718							break;
 719						}
 720					} else {
 721						packet = mMessageGenerator.generateChat(message);
 722					}
 723					break;
 724				case Message.ENCRYPTION_PGP:
 725				case Message.ENCRYPTION_DECRYPTED:
 726					if (message.needsUploading()) {
 727						if (account.httpUploadAvailable() || message.fixCounterpart()) {
 728							this.sendFileMessage(message,delay);
 729						} else {
 730							break;
 731						}
 732					} else {
 733						packet = mMessageGenerator.generatePgpChat(message);
 734					}
 735					break;
 736				case Message.ENCRYPTION_OTR:
 737					SessionImpl otrSession = conversation.getOtrSession();
 738					if (otrSession != null && otrSession.getSessionStatus() == SessionStatus.ENCRYPTED) {
 739						try {
 740							message.setCounterpart(Jid.fromSessionID(otrSession.getSessionID()));
 741						} catch (InvalidJidException e) {
 742							break;
 743						}
 744						if (message.needsUploading()) {
 745							mJingleConnectionManager.createNewConnection(message);
 746						} else {
 747							packet = mMessageGenerator.generateOtrChat(message);
 748						}
 749					} else if (otrSession == null) {
 750						if (message.fixCounterpart()) {
 751							conversation.startOtrSession(message.getCounterpart().getResourcepart(), true);
 752						} else {
 753							break;
 754						}
 755					}
 756					break;
 757				case Message.ENCRYPTION_AXOLOTL:
 758					if (message.needsUploading()) {
 759						if (account.httpUploadAvailable() || message.fixCounterpart()) {
 760							this.sendFileMessage(message,delay);
 761						} else {
 762							break;
 763						}
 764					} else {
 765						XmppAxolotlMessage axolotlMessage = account.getAxolotlService().fetchAxolotlMessageFromCache(message);
 766						if (axolotlMessage == null) {
 767							account.getAxolotlService().prepareMessage(message,delay);
 768							message.setAxolotlFingerprint(account.getAxolotlService().getOwnPublicKey().getFingerprint().replaceAll("\\s", ""));
 769						} else {
 770							packet = mMessageGenerator.generateAxolotlChat(message, axolotlMessage);
 771						}
 772					}
 773					break;
 774
 775			}
 776			if (packet != null) {
 777				if (account.getXmppConnection().getFeatures().sm() || conversation.getMode() == Conversation.MODE_MULTI) {
 778					message.setStatus(Message.STATUS_UNSEND);
 779				} else {
 780					message.setStatus(Message.STATUS_SEND);
 781				}
 782			}
 783		} else {
 784			switch(message.getEncryption()) {
 785				case Message.ENCRYPTION_DECRYPTED:
 786					if (!message.needsUploading()) {
 787						String pgpBody = message.getEncryptedBody();
 788						String decryptedBody = message.getBody();
 789						message.setBody(pgpBody);
 790						message.setEncryption(Message.ENCRYPTION_PGP);
 791						databaseBackend.createMessage(message);
 792						saveInDb = false;
 793						message.setBody(decryptedBody);
 794						message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 795					}
 796					break;
 797				case Message.ENCRYPTION_OTR:
 798					if (!conversation.hasValidOtrSession() && message.getCounterpart() != null) {
 799						conversation.startOtrSession(message.getCounterpart().getResourcepart(), false);
 800					}
 801					break;
 802				case Message.ENCRYPTION_AXOLOTL:
 803					message.setAxolotlFingerprint(account.getAxolotlService().getOwnPublicKey().getFingerprint().replaceAll("\\s", ""));
 804					break;
 805			}
 806		}
 807
 808		if (resend) {
 809			if (packet != null) {
 810				if (account.getXmppConnection().getFeatures().sm() || conversation.getMode() == Conversation.MODE_MULTI) {
 811					markMessage(message,Message.STATUS_UNSEND);
 812				} else {
 813					markMessage(message,Message.STATUS_SEND);
 814				}
 815			}
 816		} else {
 817			conversation.add(message);
 818			if (saveInDb && (message.getEncryption() == Message.ENCRYPTION_NONE || saveEncryptedMessages())) {
 819				databaseBackend.createMessage(message);
 820			}
 821			updateConversationUi();
 822		}
 823		if (packet != null) {
 824			if (delay) {
 825				mMessageGenerator.addDelay(packet,message.getTimeSent());
 826			}
 827			if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 828				if (this.sendChatStates()) {
 829					packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
 830				}
 831			}
 832			sendMessagePacket(account, packet);
 833		}
 834	}
 835
 836	private void sendUnsentMessages(final Conversation conversation) {
 837		conversation.findWaitingMessages(new Conversation.OnMessageFound() {
 838
 839			@Override
 840			public void onMessageFound(Message message) {
 841				resendMessage(message, true);
 842			}
 843		});
 844	}
 845
 846	public void resendMessage(final Message message, final boolean delay) {
 847		sendMessage(message, true, delay);
 848	}
 849
 850	public void fetchRosterFromServer(final Account account) {
 851		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 852		if (!"".equals(account.getRosterVersion())) {
 853			Log.d(Config.LOGTAG, account.getJid().toBareJid()
 854					+ ": fetching roster version " + account.getRosterVersion());
 855		} else {
 856			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 857		}
 858		iqPacket.query(Xmlns.ROSTER).setAttribute("ver",account.getRosterVersion());
 859		sendIqPacket(account,iqPacket,mIqParser);
 860	}
 861
 862	public void fetchBookmarks(final Account account) {
 863		final IqPacket iqPacket = new IqPacket(IqPacket.TYPE.GET);
 864		final Element query = iqPacket.query("jabber:iq:private");
 865		query.addChild("storage", "storage:bookmarks");
 866		final OnIqPacketReceived callback = new OnIqPacketReceived() {
 867
 868			@Override
 869			public void onIqPacketReceived(final Account account, final IqPacket packet) {
 870				final Element query = packet.query();
 871				final List<Bookmark> bookmarks = new CopyOnWriteArrayList<>();
 872				final Element storage = query.findChild("storage",
 873						"storage:bookmarks");
 874				if (storage != null) {
 875					for (final Element item : storage.getChildren()) {
 876						if (item.getName().equals("conference")) {
 877							final Bookmark bookmark = Bookmark.parse(item, account);
 878							bookmarks.add(bookmark);
 879							Conversation conversation = find(bookmark);
 880							if (conversation != null) {
 881								conversation.setBookmark(bookmark);
 882							} else if (bookmark.autojoin() && bookmark.getJid() != null) {
 883								conversation = findOrCreateConversation(
 884										account, bookmark.getJid(), true);
 885								conversation.setBookmark(bookmark);
 886								joinMuc(conversation);
 887							}
 888						}
 889					}
 890				}
 891				account.setBookmarks(bookmarks);
 892			}
 893		};
 894		sendIqPacket(account, iqPacket, callback);
 895	}
 896
 897	public void pushBookmarks(Account account) {
 898		IqPacket iqPacket = new IqPacket(IqPacket.TYPE.SET);
 899		Element query = iqPacket.query("jabber:iq:private");
 900		Element storage = query.addChild("storage", "storage:bookmarks");
 901		for (Bookmark bookmark : account.getBookmarks()) {
 902			storage.addChild(bookmark);
 903		}
 904		sendIqPacket(account, iqPacket, mDefaultIqHandler);
 905	}
 906
 907	public void onPhoneContactsLoaded(final List<Bundle> phoneContacts) {
 908		if (mPhoneContactMergerThread != null) {
 909			mPhoneContactMergerThread.interrupt();
 910		}
 911		mPhoneContactMergerThread = new Thread(new Runnable() {
 912			@Override
 913			public void run() {
 914				Log.d(Config.LOGTAG,"start merging phone contacts with roster");
 915				for (Account account : accounts) {
 916					List<Contact> withSystemAccounts = account.getRoster().getWithSystemAccounts();
 917					for (Bundle phoneContact : phoneContacts) {
 918						if (Thread.interrupted()) {
 919							Log.d(Config.LOGTAG,"interrupted merging phone contacts");
 920							return;
 921						}
 922						Jid jid;
 923						try {
 924							jid = Jid.fromString(phoneContact.getString("jid"));
 925						} catch (final InvalidJidException e) {
 926							continue;
 927						}
 928						final Contact contact = account.getRoster().getContact(jid);
 929						String systemAccount = phoneContact.getInt("phoneid")
 930							+ "#"
 931							+ phoneContact.getString("lookup");
 932						contact.setSystemAccount(systemAccount);
 933						if (contact.setPhotoUri(phoneContact.getString("photouri"))) {
 934							getAvatarService().clear(contact);
 935						}
 936						contact.setSystemName(phoneContact.getString("displayname"));
 937						withSystemAccounts.remove(contact);
 938					}
 939					for(Contact contact : withSystemAccounts) {
 940						contact.setSystemAccount(null);
 941						contact.setSystemName(null);
 942						if (contact.setPhotoUri(null)) {
 943							getAvatarService().clear(contact);
 944						}
 945					}
 946				}
 947				Log.d(Config.LOGTAG,"finished merging phone contacts");
 948				updateAccountUi();
 949			}
 950		});
 951		mPhoneContactMergerThread.start();
 952	}
 953
 954	private void restoreFromDatabase() {
 955		synchronized (this.conversations) {
 956			final Map<String, Account> accountLookupTable = new Hashtable<>();
 957			for (Account account : this.accounts) {
 958				accountLookupTable.put(account.getUuid(), account);
 959			}
 960			this.conversations.addAll(databaseBackend.getConversations(Conversation.STATUS_AVAILABLE));
 961			for (Conversation conversation : this.conversations) {
 962				Account account = accountLookupTable.get(conversation.getAccountUuid());
 963				conversation.setAccount(account);
 964			}
 965			Runnable runnable =new Runnable() {
 966				@Override
 967				public void run() {
 968					Log.d(Config.LOGTAG,"restoring roster");
 969					for(Account account : accounts) {
 970						databaseBackend.readRoster(account.getRoster());
 971						account.initAccountServices(XmppConnectionService.this);
 972					}
 973					getBitmapCache().evictAll();
 974					Looper.prepare();
 975					PhoneHelper.loadPhoneContacts(getApplicationContext(),
 976							new CopyOnWriteArrayList<Bundle>(),
 977							XmppConnectionService.this);
 978					Log.d(Config.LOGTAG,"restoring messages");
 979					for (Conversation conversation : conversations) {
 980						conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
 981						checkDeletedFiles(conversation);
 982					}
 983					mRestoredFromDatabase = true;
 984					Log.d(Config.LOGTAG,"restored all messages");
 985					updateConversationUi();
 986				}
 987			};
 988			mDatabaseExecutor.execute(runnable);
 989		}
 990	}
 991
 992	public List<Conversation> getConversations() {
 993		return this.conversations;
 994	}
 995
 996	private void checkDeletedFiles(Conversation conversation) {
 997		conversation.findMessagesWithFiles(new Conversation.OnMessageFound() {
 998
 999			@Override
1000			public void onMessageFound(Message message) {
1001				if (!getFileBackend().isFileAvailable(message)) {
1002					message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1003				}
1004			}
1005		});
1006	}
1007
1008	private void markFileDeleted(String uuid) {
1009		for (Conversation conversation : getConversations()) {
1010			Message message = conversation.findMessageWithFileAndUuid(uuid);
1011			if (message != null) {
1012				if (!getFileBackend().isFileAvailable(message)) {
1013					message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1014					updateConversationUi();
1015				}
1016				return;
1017			}
1018		}
1019	}
1020
1021	public void populateWithOrderedConversations(final List<Conversation> list) {
1022		populateWithOrderedConversations(list, true);
1023	}
1024
1025	public void populateWithOrderedConversations(final List<Conversation> list, boolean includeNoFileUpload) {
1026		list.clear();
1027		if (includeNoFileUpload) {
1028			list.addAll(getConversations());
1029		} else {
1030			for (Conversation conversation : getConversations()) {
1031				if (conversation.getMode() == Conversation.MODE_SINGLE
1032						|| conversation.getAccount().httpUploadAvailable()) {
1033					list.add(conversation);
1034				}
1035			}
1036		}
1037		Collections.sort(list, new Comparator<Conversation>() {
1038			@Override
1039			public int compare(Conversation lhs, Conversation rhs) {
1040				Message left = lhs.getLatestMessage();
1041				Message right = rhs.getLatestMessage();
1042				if (left.getTimeSent() > right.getTimeSent()) {
1043					return -1;
1044				} else if (left.getTimeSent() < right.getTimeSent()) {
1045					return 1;
1046				} else {
1047					return 0;
1048				}
1049			}
1050		});
1051	}
1052
1053	public void loadMoreMessages(final Conversation conversation, final long timestamp, final OnMoreMessagesLoaded callback) {
1054		Log.d(Config.LOGTAG, "load more messages for " + conversation.getName() + " prior to " + MessageGenerator.getTimestamp(timestamp));
1055		if (XmppConnectionService.this.getMessageArchiveService().queryInProgress(conversation,callback)) {
1056			return;
1057		}
1058		Runnable runnable = new Runnable() {
1059			@Override
1060			public void run() {
1061				final Account account = conversation.getAccount();
1062				List<Message> messages = databaseBackend.getMessages(conversation, 50,timestamp);
1063				if (messages.size() > 0) {
1064					conversation.addAll(0, messages);
1065					checkDeletedFiles(conversation);
1066					callback.onMoreMessagesLoaded(messages.size(), conversation);
1067				} else if (conversation.hasMessagesLeftOnServer()
1068						&& account.isOnlineAndConnected()
1069						&& account.getXmppConnection().getFeatures().mam()) {
1070					MessageArchiveService.Query query = getMessageArchiveService().query(conversation,0,timestamp - 1);
1071					if (query != null) {
1072						query.setCallback(callback);
1073					}
1074					callback.informUser(R.string.fetching_history_from_server);
1075				}
1076			}
1077		};
1078		mDatabaseExecutor.execute(runnable);
1079	}
1080
1081	public List<Account> getAccounts() {
1082		return this.accounts;
1083	}
1084
1085	public Conversation find(final Iterable<Conversation> haystack, final Contact contact) {
1086		for (final Conversation conversation : haystack) {
1087			if (conversation.getContact() == contact) {
1088				return conversation;
1089			}
1090		}
1091		return null;
1092	}
1093
1094	public Conversation find(final Iterable<Conversation> haystack, final Account account, final Jid jid) {
1095		if (jid == null) {
1096			return null;
1097		}
1098		for (final Conversation conversation : haystack) {
1099			if ((account == null || conversation.getAccount() == account)
1100					&& (conversation.getJid().toBareJid().equals(jid.toBareJid()))) {
1101				return conversation;
1102			}
1103		}
1104		return null;
1105	}
1106
1107	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc) {
1108		return this.findOrCreateConversation(account, jid, muc, null);
1109	}
1110
1111	public Conversation findOrCreateConversation(final Account account, final Jid jid, final boolean muc, final MessageArchiveService.Query query) {
1112		synchronized (this.conversations) {
1113			Conversation conversation = find(account, jid);
1114			if (conversation != null) {
1115				return conversation;
1116			}
1117			conversation = databaseBackend.findConversation(account, jid);
1118			if (conversation != null) {
1119				conversation.setStatus(Conversation.STATUS_AVAILABLE);
1120				conversation.setAccount(account);
1121				if (muc) {
1122					conversation.setMode(Conversation.MODE_MULTI);
1123					conversation.setContactJid(jid);
1124				} else {
1125					conversation.setMode(Conversation.MODE_SINGLE);
1126					conversation.setContactJid(jid.toBareJid());
1127				}
1128				conversation.setNextEncryption(-1);
1129				conversation.addAll(0, databaseBackend.getMessages(conversation, Config.PAGE_SIZE));
1130				this.databaseBackend.updateConversation(conversation);
1131			} else {
1132				String conversationName;
1133				Contact contact = account.getRoster().getContact(jid);
1134				if (contact != null) {
1135					conversationName = contact.getDisplayName();
1136				} else {
1137					conversationName = jid.getLocalpart();
1138				}
1139				if (muc) {
1140					conversation = new Conversation(conversationName, account, jid,
1141							Conversation.MODE_MULTI);
1142				} else {
1143					conversation = new Conversation(conversationName, account, jid.toBareJid(),
1144							Conversation.MODE_SINGLE);
1145				}
1146				this.databaseBackend.createConversation(conversation);
1147			}
1148			if (account.getXmppConnection() != null
1149					&& account.getXmppConnection().getFeatures().mam()
1150					&& !muc) {
1151				if (query == null) {
1152					this.mMessageArchiveService.query(conversation);
1153				} else {
1154					if (query.getConversation() == null) {
1155						this.mMessageArchiveService.query(conversation, query.getStart());
1156					}
1157				}
1158			}
1159			checkDeletedFiles(conversation);
1160			this.conversations.add(conversation);
1161			updateConversationUi();
1162			return conversation;
1163		}
1164	}
1165
1166	public void archiveConversation(Conversation conversation) {
1167		getNotificationService().clear(conversation);
1168		conversation.setStatus(Conversation.STATUS_ARCHIVED);
1169		conversation.setNextEncryption(-1);
1170		synchronized (this.conversations) {
1171			if (conversation.getMode() == Conversation.MODE_MULTI) {
1172				if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1173					Bookmark bookmark = conversation.getBookmark();
1174					if (bookmark != null && bookmark.autojoin()) {
1175						bookmark.setAutojoin(false);
1176						pushBookmarks(bookmark.getAccount());
1177					}
1178				}
1179				leaveMuc(conversation);
1180			} else {
1181				conversation.endOtrIfNeeded();
1182			}
1183			this.databaseBackend.updateConversation(conversation);
1184			this.conversations.remove(conversation);
1185			updateConversationUi();
1186		}
1187	}
1188
1189	public void createAccount(final Account account) {
1190		account.initAccountServices(this);
1191		databaseBackend.createAccount(account);
1192		this.accounts.add(account);
1193		this.reconnectAccountInBackground(account);
1194		updateAccountUi();
1195	}
1196
1197	public void updateAccount(final Account account) {
1198		this.statusListener.onStatusChanged(account);
1199		databaseBackend.updateAccount(account);
1200		reconnectAccount(account, false);
1201		updateAccountUi();
1202		getNotificationService().updateErrorNotification();
1203	}
1204
1205	public void updateAccountPasswordOnServer(final Account account, final String newPassword, final OnAccountPasswordChanged callback) {
1206		final IqPacket iq = getIqGenerator().generateSetPassword(account, newPassword);
1207		sendIqPacket(account, iq, new OnIqPacketReceived() {
1208			@Override
1209			public void onIqPacketReceived(final Account account, final IqPacket packet) {
1210				if (packet.getType() == IqPacket.TYPE.RESULT) {
1211					account.setPassword(newPassword);
1212					databaseBackend.updateAccount(account);
1213					callback.onPasswordChangeSucceeded();
1214				} else {
1215					callback.onPasswordChangeFailed();
1216				}
1217			}
1218		});
1219	}
1220
1221	public void deleteAccount(final Account account) {
1222		synchronized (this.conversations) {
1223			for (final Conversation conversation : conversations) {
1224				if (conversation.getAccount() == account) {
1225					if (conversation.getMode() == Conversation.MODE_MULTI) {
1226						leaveMuc(conversation);
1227					} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
1228						conversation.endOtrIfNeeded();
1229					}
1230					conversations.remove(conversation);
1231				}
1232			}
1233			if (account.getXmppConnection() != null) {
1234				this.disconnect(account, true);
1235			}
1236			databaseBackend.deleteAccount(account);
1237			this.accounts.remove(account);
1238			updateAccountUi();
1239			getNotificationService().updateErrorNotification();
1240		}
1241	}
1242
1243	public void setOnConversationListChangedListener(OnConversationUpdate listener) {
1244		synchronized (this) {
1245			if (checkListeners()) {
1246				switchToForeground();
1247			}
1248			this.mOnConversationUpdate = listener;
1249			this.mNotificationService.setIsInForeground(true);
1250			if (this.convChangedListenerCount < 2) {
1251				this.convChangedListenerCount++;
1252			}
1253		}
1254	}
1255
1256	public void removeOnConversationListChangedListener() {
1257		synchronized (this) {
1258			this.convChangedListenerCount--;
1259			if (this.convChangedListenerCount <= 0) {
1260				this.convChangedListenerCount = 0;
1261				this.mOnConversationUpdate = null;
1262				this.mNotificationService.setIsInForeground(false);
1263				if (checkListeners()) {
1264					switchToBackground();
1265				}
1266			}
1267		}
1268	}
1269
1270	public void setOnShowErrorToastListener(OnShowErrorToast onShowErrorToast) {
1271		synchronized (this) {
1272			if (checkListeners()) {
1273				switchToForeground();
1274			}
1275			this.mOnShowErrorToast = onShowErrorToast;
1276			if (this.showErrorToastListenerCount < 2) {
1277				this.showErrorToastListenerCount++;
1278			}
1279		}
1280		this.mOnShowErrorToast = onShowErrorToast;
1281	}
1282
1283	public void removeOnShowErrorToastListener() {
1284		synchronized (this) {
1285			this.showErrorToastListenerCount--;
1286			if (this.showErrorToastListenerCount <= 0) {
1287				this.showErrorToastListenerCount = 0;
1288				this.mOnShowErrorToast = null;
1289				if (checkListeners()) {
1290					switchToBackground();
1291				}
1292			}
1293		}
1294	}
1295
1296	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
1297		synchronized (this) {
1298			if (checkListeners()) {
1299				switchToForeground();
1300			}
1301			this.mOnAccountUpdate = listener;
1302			if (this.accountChangedListenerCount < 2) {
1303				this.accountChangedListenerCount++;
1304			}
1305		}
1306	}
1307
1308	public void removeOnAccountListChangedListener() {
1309		synchronized (this) {
1310			this.accountChangedListenerCount--;
1311			if (this.accountChangedListenerCount <= 0) {
1312				this.mOnAccountUpdate = null;
1313				this.accountChangedListenerCount = 0;
1314				if (checkListeners()) {
1315					switchToBackground();
1316				}
1317			}
1318		}
1319	}
1320
1321	public void setOnRosterUpdateListener(final OnRosterUpdate listener) {
1322		synchronized (this) {
1323			if (checkListeners()) {
1324				switchToForeground();
1325			}
1326			this.mOnRosterUpdate = listener;
1327			if (this.rosterChangedListenerCount < 2) {
1328				this.rosterChangedListenerCount++;
1329			}
1330		}
1331	}
1332
1333	public void removeOnRosterUpdateListener() {
1334		synchronized (this) {
1335			this.rosterChangedListenerCount--;
1336			if (this.rosterChangedListenerCount <= 0) {
1337				this.rosterChangedListenerCount = 0;
1338				this.mOnRosterUpdate = null;
1339				if (checkListeners()) {
1340					switchToBackground();
1341				}
1342			}
1343		}
1344	}
1345
1346	public void setOnUpdateBlocklistListener(final OnUpdateBlocklist listener) {
1347		synchronized (this) {
1348			if (checkListeners()) {
1349				switchToForeground();
1350			}
1351			this.mOnUpdateBlocklist = listener;
1352			if (this.updateBlocklistListenerCount < 2) {
1353				this.updateBlocklistListenerCount++;
1354			}
1355		}
1356	}
1357
1358	public void removeOnUpdateBlocklistListener() {
1359		synchronized (this) {
1360			this.updateBlocklistListenerCount--;
1361			if (this.updateBlocklistListenerCount <= 0) {
1362				this.updateBlocklistListenerCount = 0;
1363				this.mOnUpdateBlocklist = null;
1364				if (checkListeners()) {
1365					switchToBackground();
1366				}
1367			}
1368		}
1369	}
1370
1371	public void setOnKeyStatusUpdatedListener(final OnKeyStatusUpdated listener) {
1372		synchronized (this) {
1373			if (checkListeners()) {
1374				switchToForeground();
1375			}
1376			this.mOnKeyStatusUpdated = listener;
1377			if (this.keyStatusUpdatedListenerCount < 2) {
1378				this.keyStatusUpdatedListenerCount++;
1379			}
1380		}
1381	}
1382
1383	public void removeOnNewKeysAvailableListener() {
1384		synchronized (this) {
1385			this.keyStatusUpdatedListenerCount--;
1386			if (this.keyStatusUpdatedListenerCount <= 0) {
1387				this.keyStatusUpdatedListenerCount = 0;
1388				this.mOnKeyStatusUpdated = null;
1389				if (checkListeners()) {
1390					switchToBackground();
1391				}
1392			}
1393		}
1394	}
1395
1396	public void setOnMucRosterUpdateListener(OnMucRosterUpdate listener) {
1397		synchronized (this) {
1398			if (checkListeners()) {
1399				switchToForeground();
1400			}
1401			this.mOnMucRosterUpdate = listener;
1402			if (this.mucRosterChangedListenerCount < 2) {
1403				this.mucRosterChangedListenerCount++;
1404			}
1405		}
1406	}
1407
1408	public void removeOnMucRosterUpdateListener() {
1409		synchronized (this) {
1410			this.mucRosterChangedListenerCount--;
1411			if (this.mucRosterChangedListenerCount <= 0) {
1412				this.mucRosterChangedListenerCount = 0;
1413				this.mOnMucRosterUpdate = null;
1414				if (checkListeners()) {
1415					switchToBackground();
1416				}
1417			}
1418		}
1419	}
1420
1421	private boolean checkListeners() {
1422		return (this.mOnAccountUpdate == null
1423				&& this.mOnConversationUpdate == null
1424				&& this.mOnRosterUpdate == null
1425				&& this.mOnUpdateBlocklist == null
1426				&& this.mOnShowErrorToast == null
1427				&& this.mOnKeyStatusUpdated == null);
1428	}
1429
1430	private void switchToForeground() {
1431		for (Account account : getAccounts()) {
1432			if (account.getStatus() == Account.State.ONLINE) {
1433				XmppConnection connection = account.getXmppConnection();
1434				if (connection != null && connection.getFeatures().csi()) {
1435					connection.sendActive();
1436				}
1437			}
1438		}
1439		Log.d(Config.LOGTAG, "app switched into foreground");
1440	}
1441
1442	private void switchToBackground() {
1443		for (Account account : getAccounts()) {
1444			if (account.getStatus() == Account.State.ONLINE) {
1445				XmppConnection connection = account.getXmppConnection();
1446				if (connection != null && connection.getFeatures().csi()) {
1447					connection.sendInactive();
1448				}
1449			}
1450		}
1451		for(Conversation conversation : getConversations()) {
1452			conversation.setIncomingChatState(ChatState.ACTIVE);
1453		}
1454		this.mNotificationService.setIsInForeground(false);
1455		Log.d(Config.LOGTAG, "app switched into background");
1456	}
1457
1458	private void connectMultiModeConversations(Account account) {
1459		List<Conversation> conversations = getConversations();
1460		for (Conversation conversation : conversations) {
1461			if ((conversation.getMode() == Conversation.MODE_MULTI)
1462					&& (conversation.getAccount() == account)) {
1463				conversation.resetMucOptions();
1464				joinMuc(conversation);
1465			}
1466		}
1467	}
1468
1469	public void joinMuc(Conversation conversation) {
1470		Account account = conversation.getAccount();
1471		account.pendingConferenceJoins.remove(conversation);
1472		account.pendingConferenceLeaves.remove(conversation);
1473		if (account.getStatus() == Account.State.ONLINE) {
1474			final String nick = conversation.getMucOptions().getProposedNick();
1475			final Jid joinJid = conversation.getMucOptions().createJoinJid(nick);
1476			if (joinJid == null) {
1477				return; //safety net
1478			}
1479			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": joining conversation " + joinJid.toString());
1480			PresencePacket packet = new PresencePacket();
1481			packet.setFrom(conversation.getAccount().getJid());
1482			packet.setTo(joinJid);
1483			Element x = packet.addChild("x", "http://jabber.org/protocol/muc");
1484			if (conversation.getMucOptions().getPassword() != null) {
1485				x.addChild("password").setContent(conversation.getMucOptions().getPassword());
1486			}
1487			x.addChild("history").setAttribute("since", PresenceGenerator.getTimestamp(conversation.getLastMessageTransmitted()));
1488			String sig = account.getPgpSignature();
1489			if (sig != null) {
1490				packet.addChild("status").setContent("online");
1491				packet.addChild("x", "jabber:x:signed").setContent(sig);
1492			}
1493			sendPresencePacket(account, packet);
1494			fetchConferenceConfiguration(conversation);
1495			if (!joinJid.equals(conversation.getJid())) {
1496				conversation.setContactJid(joinJid);
1497				databaseBackend.updateConversation(conversation);
1498			}
1499			conversation.setHasMessagesLeftOnServer(false);
1500		} else {
1501			account.pendingConferenceJoins.add(conversation);
1502		}
1503	}
1504
1505	public void providePasswordForMuc(Conversation conversation, String password) {
1506		if (conversation.getMode() == Conversation.MODE_MULTI) {
1507			conversation.getMucOptions().setPassword(password);
1508			if (conversation.getBookmark() != null) {
1509				conversation.getBookmark().setAutojoin(true);
1510				pushBookmarks(conversation.getAccount());
1511			}
1512			databaseBackend.updateConversation(conversation);
1513			joinMuc(conversation);
1514		}
1515	}
1516
1517	public void renameInMuc(final Conversation conversation, final String nick, final UiCallback<Conversation> callback) {
1518		final MucOptions options = conversation.getMucOptions();
1519		final Jid joinJid = options.createJoinJid(nick);
1520		if (options.online()) {
1521			Account account = conversation.getAccount();
1522			options.setOnRenameListener(new OnRenameListener() {
1523
1524				@Override
1525				public void onSuccess() {
1526					conversation.setContactJid(joinJid);
1527					databaseBackend.updateConversation(conversation);
1528					Bookmark bookmark = conversation.getBookmark();
1529					if (bookmark != null) {
1530						bookmark.setNick(nick);
1531						pushBookmarks(bookmark.getAccount());
1532					}
1533					callback.success(conversation);
1534				}
1535
1536				@Override
1537				public void onFailure() {
1538					callback.error(R.string.nick_in_use, conversation);
1539				}
1540			});
1541
1542			PresencePacket packet = new PresencePacket();
1543			packet.setTo(joinJid);
1544			packet.setFrom(conversation.getAccount().getJid());
1545
1546			String sig = account.getPgpSignature();
1547			if (sig != null) {
1548				packet.addChild("status").setContent("online");
1549				packet.addChild("x", "jabber:x:signed").setContent(sig);
1550			}
1551			sendPresencePacket(account, packet);
1552		} else {
1553			conversation.setContactJid(joinJid);
1554			databaseBackend.updateConversation(conversation);
1555			if (conversation.getAccount().getStatus() == Account.State.ONLINE) {
1556				Bookmark bookmark = conversation.getBookmark();
1557				if (bookmark != null) {
1558					bookmark.setNick(nick);
1559					pushBookmarks(bookmark.getAccount());
1560				}
1561				joinMuc(conversation);
1562			}
1563		}
1564	}
1565
1566	public void leaveMuc(Conversation conversation) {
1567		Account account = conversation.getAccount();
1568		account.pendingConferenceJoins.remove(conversation);
1569		account.pendingConferenceLeaves.remove(conversation);
1570		if (account.getStatus() == Account.State.ONLINE) {
1571			PresencePacket packet = new PresencePacket();
1572			packet.setTo(conversation.getJid());
1573			packet.setFrom(conversation.getAccount().getJid());
1574			packet.setAttribute("type", "unavailable");
1575			sendPresencePacket(conversation.getAccount(), packet);
1576			conversation.getMucOptions().setOffline();
1577			conversation.deregisterWithBookmark();
1578			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid()
1579					+ ": leaving muc " + conversation.getJid());
1580		} else {
1581			account.pendingConferenceLeaves.add(conversation);
1582		}
1583	}
1584
1585	private String findConferenceServer(final Account account) {
1586		String server;
1587		if (account.getXmppConnection() != null) {
1588			server = account.getXmppConnection().getMucServer();
1589			if (server != null) {
1590				return server;
1591			}
1592		}
1593		for (Account other : getAccounts()) {
1594			if (other != account && other.getXmppConnection() != null) {
1595				server = other.getXmppConnection().getMucServer();
1596				if (server != null) {
1597					return server;
1598				}
1599			}
1600		}
1601		return null;
1602	}
1603
1604	public void createAdhocConference(final Account account, final Iterable<Jid> jids, final UiCallback<Conversation> callback) {
1605		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": creating adhoc conference with " + jids.toString());
1606		if (account.getStatus() == Account.State.ONLINE) {
1607			try {
1608				String server = findConferenceServer(account);
1609				if (server == null) {
1610					if (callback != null) {
1611						callback.error(R.string.no_conference_server_found, null);
1612					}
1613					return;
1614				}
1615				String name = new BigInteger(75, getRNG()).toString(32);
1616				Jid jid = Jid.fromParts(name, server, null);
1617				final Conversation conversation = findOrCreateConversation(account, jid, true);
1618				joinMuc(conversation);
1619				Bundle options = new Bundle();
1620				options.putString("muc#roomconfig_persistentroom", "1");
1621				options.putString("muc#roomconfig_membersonly", "1");
1622				options.putString("muc#roomconfig_publicroom", "0");
1623				options.putString("muc#roomconfig_whois", "anyone");
1624				pushConferenceConfiguration(conversation, options, new OnConferenceOptionsPushed() {
1625					@Override
1626					public void onPushSucceeded() {
1627						for (Jid invite : jids) {
1628							invite(conversation, invite);
1629						}
1630						if (account.countPresences() > 1) {
1631							directInvite(conversation, account.getJid().toBareJid());
1632						}
1633						if (callback != null) {
1634							callback.success(conversation);
1635						}
1636					}
1637
1638					@Override
1639					public void onPushFailed() {
1640						if (callback != null) {
1641							callback.error(R.string.conference_creation_failed, conversation);
1642						}
1643					}
1644				});
1645
1646			} catch (InvalidJidException e) {
1647				if (callback != null) {
1648					callback.error(R.string.conference_creation_failed, null);
1649				}
1650			}
1651		} else {
1652			if (callback != null) {
1653				callback.error(R.string.not_connected_try_again, null);
1654			}
1655		}
1656	}
1657
1658	public void fetchConferenceConfiguration(final Conversation conversation) {
1659		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1660		request.setTo(conversation.getJid().toBareJid());
1661		request.query("http://jabber.org/protocol/disco#info");
1662		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
1663			@Override
1664			public void onIqPacketReceived(Account account, IqPacket packet) {
1665				if (packet.getType() != IqPacket.TYPE.ERROR) {
1666					ArrayList<String> features = new ArrayList<>();
1667					for (Element child : packet.query().getChildren()) {
1668						if (child != null && child.getName().equals("feature")) {
1669							String var = child.getAttribute("var");
1670							if (var != null) {
1671								features.add(var);
1672							}
1673						}
1674					}
1675					conversation.getMucOptions().updateFeatures(features);
1676					updateConversationUi();
1677				}
1678			}
1679		});
1680	}
1681
1682	public void pushConferenceConfiguration(final Conversation conversation, final Bundle options, final OnConferenceOptionsPushed callback) {
1683		IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1684		request.setTo(conversation.getJid().toBareJid());
1685		request.query("http://jabber.org/protocol/muc#owner");
1686		sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
1687			@Override
1688			public void onIqPacketReceived(Account account, IqPacket packet) {
1689				if (packet.getType() != IqPacket.TYPE.ERROR) {
1690					Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
1691					for (Field field : data.getFields()) {
1692						if (options.containsKey(field.getName())) {
1693							field.setValue(options.getString(field.getName()));
1694						}
1695					}
1696					data.submit();
1697					IqPacket set = new IqPacket(IqPacket.TYPE.SET);
1698					set.setTo(conversation.getJid().toBareJid());
1699					set.query("http://jabber.org/protocol/muc#owner").addChild(data);
1700					sendIqPacket(account, set, new OnIqPacketReceived() {
1701						@Override
1702						public void onIqPacketReceived(Account account, IqPacket packet) {
1703							if (packet.getType() == IqPacket.TYPE.RESULT) {
1704								if (callback != null) {
1705									callback.onPushSucceeded();
1706								}
1707							} else {
1708								if (callback != null) {
1709									callback.onPushFailed();
1710								}
1711							}
1712						}
1713					});
1714				} else {
1715					if (callback != null) {
1716						callback.onPushFailed();
1717					}
1718				}
1719			}
1720		});
1721	}
1722
1723	public void pushSubjectToConference(final Conversation conference, final String subject) {
1724		MessagePacket packet = this.getMessageGenerator().conferenceSubject(conference, subject);
1725		this.sendMessagePacket(conference.getAccount(), packet);
1726		final MucOptions mucOptions = conference.getMucOptions();
1727		final MucOptions.User self = mucOptions.getSelf();
1728		if (!mucOptions.persistent() && self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
1729			Bundle options = new Bundle();
1730			options.putString("muc#roomconfig_persistentroom", "1");
1731			this.pushConferenceConfiguration(conference, options, null);
1732		}
1733	}
1734
1735	public void changeAffiliationInConference(final Conversation conference, Jid user, MucOptions.Affiliation affiliation, final OnAffiliationChanged callback) {
1736		final Jid jid = user.toBareJid();
1737		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jid, affiliation.toString());
1738		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
1739			@Override
1740			public void onIqPacketReceived(Account account, IqPacket packet) {
1741				if (packet.getType() == IqPacket.TYPE.RESULT) {
1742					callback.onAffiliationChangedSuccessful(jid);
1743				} else {
1744					callback.onAffiliationChangeFailed(jid, R.string.could_not_change_affiliation);
1745				}
1746			}
1747		});
1748	}
1749
1750	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
1751		List<Jid> jids = new ArrayList<>();
1752		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
1753			if (user.getAffiliation() == before && user.getJid() != null) {
1754				jids.add(user.getJid());
1755			}
1756		}
1757		IqPacket request = this.mIqGenerator.changeAffiliation(conference, jids, after.toString());
1758		sendIqPacket(conference.getAccount(), request, mDefaultIqHandler);
1759	}
1760
1761	public void changeRoleInConference(final Conversation conference, final String nick, MucOptions.Role role, final OnRoleChanged callback) {
1762		IqPacket request = this.mIqGenerator.changeRole(conference, nick, role.toString());
1763		Log.d(Config.LOGTAG, request.toString());
1764		sendIqPacket(conference.getAccount(), request, new OnIqPacketReceived() {
1765			@Override
1766			public void onIqPacketReceived(Account account, IqPacket packet) {
1767				Log.d(Config.LOGTAG, packet.toString());
1768				if (packet.getType() == IqPacket.TYPE.RESULT) {
1769					callback.onRoleChangedSuccessful(nick);
1770				} else {
1771					callback.onRoleChangeFailed(nick, R.string.could_not_change_role);
1772				}
1773			}
1774		});
1775	}
1776
1777	public void disconnect(Account account, boolean force) {
1778		if ((account.getStatus() == Account.State.ONLINE)
1779				|| (account.getStatus() == Account.State.DISABLED)) {
1780			if (!force) {
1781				List<Conversation> conversations = getConversations();
1782				for (Conversation conversation : conversations) {
1783					if (conversation.getAccount() == account) {
1784						if (conversation.getMode() == Conversation.MODE_MULTI) {
1785							leaveMuc(conversation);
1786						} else {
1787							if (conversation.endOtrIfNeeded()) {
1788								Log.d(Config.LOGTAG, account.getJid().toBareJid()
1789										+ ": ended otr session with "
1790										+ conversation.getJid());
1791							}
1792						}
1793					}
1794				}
1795				sendOfflinePresence(account);
1796			}
1797			account.getXmppConnection().disconnect(force);
1798		}
1799	}
1800
1801	@Override
1802	public IBinder onBind(Intent intent) {
1803		return mBinder;
1804	}
1805
1806	public void updateMessage(Message message) {
1807		databaseBackend.updateMessage(message);
1808		updateConversationUi();
1809	}
1810
1811	protected void syncDirtyContacts(Account account) {
1812		for (Contact contact : account.getRoster().getContacts()) {
1813			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1814				pushContactToServer(contact);
1815			}
1816			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1817				deleteContactOnServer(contact);
1818			}
1819		}
1820	}
1821
1822	public void createContact(Contact contact) {
1823		SharedPreferences sharedPref = getPreferences();
1824		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1825		if (autoGrant) {
1826			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1827			contact.setOption(Contact.Options.ASKING);
1828		}
1829		pushContactToServer(contact);
1830	}
1831
1832	public void onOtrSessionEstablished(Conversation conversation) {
1833		final Account account = conversation.getAccount();
1834		final Session otrSession = conversation.getOtrSession();
1835		Log.d(Config.LOGTAG,
1836				account.getJid().toBareJid() + " otr session established with "
1837						+ conversation.getJid() + "/"
1838						+ otrSession.getSessionID().getUserID());
1839		conversation.findUnsentMessagesWithEncryption(Message.ENCRYPTION_OTR, new Conversation.OnMessageFound() {
1840
1841			@Override
1842			public void onMessageFound(Message message) {
1843				SessionID id = otrSession.getSessionID();
1844				try {
1845					message.setCounterpart(Jid.fromString(id.getAccountID() + "/" + id.getUserID()));
1846				} catch (InvalidJidException e) {
1847					return;
1848				}
1849				if (message.needsUploading()) {
1850					mJingleConnectionManager.createNewConnection(message);
1851				} else {
1852					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message);
1853					if (outPacket != null) {
1854						mMessageGenerator.addDelay(outPacket, message.getTimeSent());
1855						message.setStatus(Message.STATUS_SEND);
1856						databaseBackend.updateMessage(message);
1857						sendMessagePacket(account, outPacket);
1858					}
1859				}
1860				updateConversationUi();
1861			}
1862		});
1863	}
1864
1865	public boolean renewSymmetricKey(Conversation conversation) {
1866		Account account = conversation.getAccount();
1867		byte[] symmetricKey = new byte[32];
1868		this.mRandom.nextBytes(symmetricKey);
1869		Session otrSession = conversation.getOtrSession();
1870		if (otrSession != null) {
1871			MessagePacket packet = new MessagePacket();
1872			packet.setType(MessagePacket.TYPE_CHAT);
1873			packet.setFrom(account.getJid());
1874			packet.addChild("private", "urn:xmpp:carbons:2");
1875			packet.addChild("no-copy", "urn:xmpp:hints");
1876			packet.setAttribute("to", otrSession.getSessionID().getAccountID() + "/"
1877					+ otrSession.getSessionID().getUserID());
1878			try {
1879				packet.setBody(otrSession
1880						.transformSending(CryptoHelper.FILETRANSFER
1881								+ CryptoHelper.bytesToHex(symmetricKey))[0]);
1882				sendMessagePacket(account, packet);
1883				conversation.setSymmetricKey(symmetricKey);
1884				return true;
1885			} catch (OtrException e) {
1886				return false;
1887			}
1888		}
1889		return false;
1890	}
1891
1892	public void pushContactToServer(final Contact contact) {
1893		contact.resetOption(Contact.Options.DIRTY_DELETE);
1894		contact.setOption(Contact.Options.DIRTY_PUSH);
1895		final Account account = contact.getAccount();
1896		if (account.getStatus() == Account.State.ONLINE) {
1897			final boolean ask = contact.getOption(Contact.Options.ASKING);
1898			final boolean sendUpdates = contact
1899					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
1900					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
1901			final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1902			iq.query(Xmlns.ROSTER).addChild(contact.asElement());
1903			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
1904			if (sendUpdates) {
1905				sendPresencePacket(account,
1906						mPresenceGenerator.sendPresenceUpdatesTo(contact));
1907			}
1908			if (ask) {
1909				sendPresencePacket(account,
1910						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
1911			}
1912		}
1913	}
1914
1915	public void publishAvatar(final Account account,
1916							  final Uri image,
1917							  final UiCallback<Avatar> callback) {
1918		final Bitmap.CompressFormat format = Config.AVATAR_FORMAT;
1919		final int size = Config.AVATAR_SIZE;
1920		final Avatar avatar = getFileBackend()
1921				.getPepAvatar(image, size, format);
1922		if (avatar != null) {
1923			avatar.height = size;
1924			avatar.width = size;
1925			if (format.equals(Bitmap.CompressFormat.WEBP)) {
1926				avatar.type = "image/webp";
1927			} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1928				avatar.type = "image/jpeg";
1929			} else if (format.equals(Bitmap.CompressFormat.PNG)) {
1930				avatar.type = "image/png";
1931			}
1932			if (!getFileBackend().save(avatar)) {
1933				callback.error(R.string.error_saving_avatar, avatar);
1934				return;
1935			}
1936			final IqPacket packet = this.mIqGenerator.publishAvatar(avatar);
1937			this.sendIqPacket(account, packet, new OnIqPacketReceived() {
1938
1939				@Override
1940				public void onIqPacketReceived(Account account, IqPacket result) {
1941					if (result.getType() == IqPacket.TYPE.RESULT) {
1942						final IqPacket packet = XmppConnectionService.this.mIqGenerator
1943								.publishAvatarMetadata(avatar);
1944						sendIqPacket(account, packet, new OnIqPacketReceived() {
1945
1946							@Override
1947							public void onIqPacketReceived(Account account,
1948														   IqPacket result) {
1949								if (result.getType() == IqPacket.TYPE.RESULT) {
1950									if (account.setAvatar(avatar.getFilename())) {
1951										getAvatarService().clear(account);
1952										databaseBackend.updateAccount(account);
1953									}
1954									callback.success(avatar);
1955								} else {
1956									callback.error(
1957											R.string.error_publish_avatar_server_reject,
1958											avatar);
1959								}
1960							}
1961						});
1962					} else {
1963						callback.error(
1964								R.string.error_publish_avatar_server_reject,
1965								avatar);
1966					}
1967				}
1968			});
1969		} else {
1970			callback.error(R.string.error_publish_avatar_converting, null);
1971		}
1972	}
1973
1974	public void fetchAvatar(Account account, Avatar avatar) {
1975		fetchAvatar(account, avatar, null);
1976	}
1977
1978	private static String generateFetchKey(Account account, final Avatar avatar) {
1979		return account.getJid().toBareJid()+"_"+avatar.owner+"_"+avatar.sha1sum;
1980	}
1981
1982	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
1983		final String KEY = generateFetchKey(account, avatar);
1984		synchronized(this.mInProgressAvatarFetches) {
1985			if (this.mInProgressAvatarFetches.contains(KEY)) {
1986				return;
1987			} else {
1988				switch (avatar.origin) {
1989					case PEP:
1990						this.mInProgressAvatarFetches.add(KEY);
1991						fetchAvatarPep(account, avatar, callback);
1992						break;
1993					case VCARD:
1994						this.mInProgressAvatarFetches.add(KEY);
1995						fetchAvatarVcard(account, avatar, callback);
1996						break;
1997				}
1998			}
1999		}
2000	}
2001
2002	private void fetchAvatarPep(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2003		IqPacket packet = this.mIqGenerator.retrievePepAvatar(avatar);
2004		sendIqPacket(account, packet, new OnIqPacketReceived() {
2005
2006			@Override
2007			public void onIqPacketReceived(Account account, IqPacket result) {
2008				synchronized (mInProgressAvatarFetches) {
2009					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
2010				}
2011				final String ERROR = account.getJid().toBareJid()
2012						+ ": fetching avatar for " + avatar.owner + " failed ";
2013				if (result.getType() == IqPacket.TYPE.RESULT) {
2014					avatar.image = mIqParser.avatarData(result);
2015					if (avatar.image != null) {
2016						if (getFileBackend().save(avatar)) {
2017							if (account.getJid().toBareJid().equals(avatar.owner)) {
2018								if (account.setAvatar(avatar.getFilename())) {
2019									databaseBackend.updateAccount(account);
2020								}
2021								getAvatarService().clear(account);
2022								updateConversationUi();
2023								updateAccountUi();
2024							} else {
2025								Contact contact = account.getRoster()
2026										.getContact(avatar.owner);
2027								contact.setAvatar(avatar);
2028								getAvatarService().clear(contact);
2029								updateConversationUi();
2030								updateRosterUi();
2031							}
2032							if (callback != null) {
2033								callback.success(avatar);
2034							}
2035							Log.d(Config.LOGTAG, account.getJid().toBareJid()
2036									+ ": succesfuly fetched pep avatar for " + avatar.owner);
2037							return;
2038						}
2039					} else {
2040
2041						Log.d(Config.LOGTAG, ERROR + "(parsing error)");
2042					}
2043				} else {
2044					Element error = result.findChild("error");
2045					if (error == null) {
2046						Log.d(Config.LOGTAG, ERROR + "(server error)");
2047					} else {
2048						Log.d(Config.LOGTAG, ERROR + error.toString());
2049					}
2050				}
2051				if (callback != null) {
2052					callback.error(0, null);
2053				}
2054
2055			}
2056		});
2057	}
2058
2059	private void fetchAvatarVcard(final Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
2060		IqPacket packet = this.mIqGenerator.retrieveVcardAvatar(avatar);
2061		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2062			@Override
2063			public void onIqPacketReceived(Account account, IqPacket packet) {
2064				synchronized (mInProgressAvatarFetches) {
2065					mInProgressAvatarFetches.remove(generateFetchKey(account, avatar));
2066				}
2067				if (packet.getType() == IqPacket.TYPE.RESULT) {
2068					Element vCard = packet.findChild("vCard", "vcard-temp");
2069					Element photo = vCard != null ? vCard.findChild("PHOTO") : null;
2070					String image = photo != null ? photo.findChildContent("BINVAL") : null;
2071					if (image != null) {
2072						avatar.image = image;
2073						if (getFileBackend().save(avatar)) {
2074							Log.d(Config.LOGTAG, account.getJid().toBareJid()
2075									+ ": successfully fetched vCard avatar for " + avatar.owner);
2076							Contact contact = account.getRoster()
2077									.getContact(avatar.owner);
2078							contact.setAvatar(avatar);
2079							getAvatarService().clear(contact);
2080							updateConversationUi();
2081							updateRosterUi();
2082						}
2083					}
2084				}
2085			}
2086		});
2087	}
2088
2089	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
2090		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
2091		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
2092
2093			@Override
2094			public void onIqPacketReceived(Account account, IqPacket packet) {
2095				if (packet.getType() == IqPacket.TYPE.RESULT) {
2096					Element pubsub = packet.findChild("pubsub",
2097							"http://jabber.org/protocol/pubsub");
2098					if (pubsub != null) {
2099						Element items = pubsub.findChild("items");
2100						if (items != null) {
2101							Avatar avatar = Avatar.parseMetadata(items);
2102							if (avatar != null) {
2103								avatar.owner = account.getJid().toBareJid();
2104								if (fileBackend.isAvatarCached(avatar)) {
2105									if (account.setAvatar(avatar.getFilename())) {
2106										databaseBackend.updateAccount(account);
2107									}
2108									getAvatarService().clear(account);
2109									callback.success(avatar);
2110								} else {
2111									fetchAvatarPep(account, avatar, callback);
2112								}
2113								return;
2114							}
2115						}
2116					}
2117				}
2118				callback.error(0, null);
2119			}
2120		});
2121	}
2122
2123	public void deleteContactOnServer(Contact contact) {
2124		contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
2125		contact.resetOption(Contact.Options.DIRTY_PUSH);
2126		contact.setOption(Contact.Options.DIRTY_DELETE);
2127		Account account = contact.getAccount();
2128		if (account.getStatus() == Account.State.ONLINE) {
2129			IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2130			Element item = iq.query(Xmlns.ROSTER).addChild("item");
2131			item.setAttribute("jid", contact.getJid().toString());
2132			item.setAttribute("subscription", "remove");
2133			account.getXmppConnection().sendIqPacket(iq, mDefaultIqHandler);
2134		}
2135	}
2136
2137	public void updateConversation(Conversation conversation) {
2138		this.databaseBackend.updateConversation(conversation);
2139	}
2140
2141	public void reconnectAccount(final Account account, final boolean force) {
2142		synchronized (account) {
2143			if (account.getXmppConnection() != null) {
2144				disconnect(account, force);
2145			}
2146			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2147
2148				synchronized (this.mInProgressAvatarFetches) {
2149					for(Iterator<String> iterator = this.mInProgressAvatarFetches.iterator(); iterator.hasNext();) {
2150						final String KEY = iterator.next();
2151						if (KEY.startsWith(account.getJid().toBareJid()+"_")) {
2152							iterator.remove();
2153						}
2154					}
2155				}
2156
2157				if (account.getXmppConnection() == null) {
2158					account.setXmppConnection(createConnection(account));
2159				}
2160				Thread thread = new Thread(account.getXmppConnection());
2161				thread.start();
2162				scheduleWakeUpCall(Config.CONNECT_TIMEOUT, account.getUuid().hashCode());
2163			} else {
2164				account.getRoster().clearPresences();
2165				account.setXmppConnection(null);
2166			}
2167		}
2168	}
2169
2170	public void reconnectAccountInBackground(final Account account) {
2171		new Thread(new Runnable() {
2172			@Override
2173			public void run() {
2174				reconnectAccount(account,false);
2175			}
2176		}).start();
2177	}
2178
2179	public void invite(Conversation conversation, Jid contact) {
2180		Log.d(Config.LOGTAG,conversation.getAccount().getJid().toBareJid()+": inviting "+contact+" to "+conversation.getJid().toBareJid());
2181		MessagePacket packet = mMessageGenerator.invite(conversation, contact);
2182		sendMessagePacket(conversation.getAccount(), packet);
2183	}
2184
2185	public void directInvite(Conversation conversation, Jid jid) {
2186		MessagePacket packet = mMessageGenerator.directInvite(conversation, jid);
2187		sendMessagePacket(conversation.getAccount(),packet);
2188	}
2189
2190	public void resetSendingToWaiting(Account account) {
2191		for (Conversation conversation : getConversations()) {
2192			if (conversation.getAccount() == account) {
2193				conversation.findUnsentTextMessages(new Conversation.OnMessageFound() {
2194
2195					@Override
2196					public void onMessageFound(Message message) {
2197						markMessage(message, Message.STATUS_WAITING);
2198					}
2199				});
2200			}
2201		}
2202	}
2203
2204	public Message markMessage(final Account account, final Jid recipient, final String uuid, final int status) {
2205		if (uuid == null) {
2206			return null;
2207		}
2208		for (Conversation conversation : getConversations()) {
2209			if (conversation.getJid().toBareJid().equals(recipient) && conversation.getAccount() == account) {
2210				final Message message = conversation.findSentMessageWithUuid(uuid);
2211				if (message != null) {
2212					markMessage(message, status);
2213				}
2214				return message;
2215			}
2216		}
2217		return null;
2218	}
2219
2220	public boolean markMessage(Conversation conversation, String uuid,
2221							   int status) {
2222		if (uuid == null) {
2223			return false;
2224		} else {
2225			Message message = conversation.findSentMessageWithUuid(uuid);
2226			if (message != null) {
2227				markMessage(message, status);
2228				return true;
2229			} else {
2230				return false;
2231			}
2232		}
2233	}
2234
2235	public void markMessage(Message message, int status) {
2236		if (status == Message.STATUS_SEND_FAILED
2237				&& (message.getStatus() == Message.STATUS_SEND_RECEIVED || message
2238				.getStatus() == Message.STATUS_SEND_DISPLAYED)) {
2239			return;
2240		}
2241		message.setStatus(status);
2242		databaseBackend.updateMessage(message);
2243		updateConversationUi();
2244	}
2245
2246	public SharedPreferences getPreferences() {
2247		return PreferenceManager
2248				.getDefaultSharedPreferences(getApplicationContext());
2249	}
2250
2251	public boolean forceEncryption() {
2252		return getPreferences().getBoolean("force_encryption", false);
2253	}
2254
2255	public boolean confirmMessages() {
2256		return getPreferences().getBoolean("confirm_messages", true);
2257	}
2258
2259	public boolean sendChatStates() {
2260		return getPreferences().getBoolean("chat_states", false);
2261	}
2262
2263	public boolean saveEncryptedMessages() {
2264		return !getPreferences().getBoolean("dont_save_encrypted", false);
2265	}
2266
2267	public boolean indicateReceived() {
2268		return getPreferences().getBoolean("indicate_received", false);
2269	}
2270
2271	public int unreadCount() {
2272		int count = 0;
2273		for(Conversation conversation : getConversations()) {
2274			count += conversation.unreadCount();
2275		}
2276		return count;
2277	}
2278
2279
2280	public void showErrorToastInUi(int resId) {
2281		if (mOnShowErrorToast != null) {
2282			mOnShowErrorToast.onShowErrorToast(resId);
2283		}
2284	}
2285
2286	public void updateConversationUi() {
2287		if (mOnConversationUpdate != null) {
2288			mOnConversationUpdate.onConversationUpdate();
2289		}
2290	}
2291
2292	public void updateAccountUi() {
2293		if (mOnAccountUpdate != null) {
2294			mOnAccountUpdate.onAccountUpdate();
2295		}
2296	}
2297
2298	public void updateRosterUi() {
2299		if (mOnRosterUpdate != null) {
2300			mOnRosterUpdate.onRosterUpdate();
2301		}
2302	}
2303
2304	public void updateBlocklistUi(final OnUpdateBlocklist.Status status) {
2305		if (mOnUpdateBlocklist != null) {
2306			mOnUpdateBlocklist.OnUpdateBlocklist(status);
2307		}
2308	}
2309
2310	public void updateMucRosterUi() {
2311		if (mOnMucRosterUpdate != null) {
2312			mOnMucRosterUpdate.onMucRosterUpdate();
2313		}
2314	}
2315
2316	public void keyStatusUpdated() {
2317		if(mOnKeyStatusUpdated != null) {
2318			mOnKeyStatusUpdated.onKeyStatusUpdated();
2319		}
2320	}
2321
2322	public Account findAccountByJid(final Jid accountJid) {
2323		for (Account account : this.accounts) {
2324			if (account.getJid().toBareJid().equals(accountJid.toBareJid())) {
2325				return account;
2326			}
2327		}
2328		return null;
2329	}
2330
2331	public Conversation findConversationByUuid(String uuid) {
2332		for (Conversation conversation : getConversations()) {
2333			if (conversation.getUuid().equals(uuid)) {
2334				return conversation;
2335			}
2336		}
2337		return null;
2338	}
2339
2340	public void markRead(final Conversation conversation) {
2341		mNotificationService.clear(conversation);
2342		conversation.markRead();
2343		updateUnreadCountBadge();
2344	}
2345
2346	public synchronized void updateUnreadCountBadge() {
2347		int count = unreadCount();
2348		if (unreadCount != count) {
2349			Log.d(Config.LOGTAG, "update unread count to " + count);
2350			if (count > 0) {
2351				ShortcutBadger.with(getApplicationContext()).count(count);
2352			} else {
2353				ShortcutBadger.with(getApplicationContext()).remove();
2354			}
2355			unreadCount = count;
2356		}
2357	}
2358
2359	public void sendReadMarker(final Conversation conversation) {
2360		final Message markable = conversation.getLatestMarkableMessage();
2361		this.markRead(conversation);
2362		if (confirmMessages() && markable != null && markable.getRemoteMsgId() != null) {
2363			Log.d(Config.LOGTAG, conversation.getAccount().getJid().toBareJid() + ": sending read marker to " + markable.getCounterpart().toString());
2364			Account account = conversation.getAccount();
2365			final Jid to = markable.getCounterpart();
2366			MessagePacket packet = mMessageGenerator.confirm(account, to, markable.getRemoteMsgId());
2367			this.sendMessagePacket(conversation.getAccount(), packet);
2368		}
2369		updateConversationUi();
2370	}
2371
2372	public SecureRandom getRNG() {
2373		return this.mRandom;
2374	}
2375
2376	public MemorizingTrustManager getMemorizingTrustManager() {
2377		return this.mMemorizingTrustManager;
2378	}
2379
2380	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
2381		this.mMemorizingTrustManager = trustManager;
2382	}
2383
2384	public void updateMemorizingTrustmanager() {
2385		final MemorizingTrustManager tm;
2386		final boolean dontTrustSystemCAs = getPreferences().getBoolean("dont_trust_system_cas", false);
2387		if (dontTrustSystemCAs) {
2388			 tm = new MemorizingTrustManager(getApplicationContext(), null);
2389		} else {
2390			tm = new MemorizingTrustManager(getApplicationContext());
2391		}
2392		setMemorizingTrustManager(tm);
2393	}
2394
2395	public PowerManager getPowerManager() {
2396		return this.pm;
2397	}
2398
2399	public LruCache<String, Bitmap> getBitmapCache() {
2400		return this.mBitmapCache;
2401	}
2402
2403	public void syncRosterToDisk(final Account account) {
2404		Runnable runnable = new Runnable() {
2405
2406			@Override
2407			public void run() {
2408				databaseBackend.writeRoster(account.getRoster());
2409			}
2410		};
2411		mDatabaseExecutor.execute(runnable);
2412
2413	}
2414
2415	public List<String> getKnownHosts() {
2416		final List<String> hosts = new ArrayList<>();
2417		for (final Account account : getAccounts()) {
2418			if (!hosts.contains(account.getServer().toString())) {
2419				hosts.add(account.getServer().toString());
2420			}
2421			for (final Contact contact : account.getRoster().getContacts()) {
2422				if (contact.showInRoster()) {
2423					final String server = contact.getServer().toString();
2424					if (server != null && !hosts.contains(server)) {
2425						hosts.add(server);
2426					}
2427				}
2428			}
2429		}
2430		return hosts;
2431	}
2432
2433	public List<String> getKnownConferenceHosts() {
2434		final ArrayList<String> mucServers = new ArrayList<>();
2435		for (final Account account : accounts) {
2436			if (account.getXmppConnection() != null) {
2437				final String server = account.getXmppConnection().getMucServer();
2438				if (server != null && !mucServers.contains(server)) {
2439					mucServers.add(server);
2440				}
2441			}
2442		}
2443		return mucServers;
2444	}
2445
2446	public void sendMessagePacket(Account account, MessagePacket packet) {
2447		XmppConnection connection = account.getXmppConnection();
2448		if (connection != null) {
2449			connection.sendMessagePacket(packet);
2450		}
2451	}
2452
2453	public void sendPresencePacket(Account account, PresencePacket packet) {
2454		XmppConnection connection = account.getXmppConnection();
2455		if (connection != null) {
2456			connection.sendPresencePacket(packet);
2457		}
2458	}
2459
2460	public void sendIqPacket(final Account account, final IqPacket packet, final OnIqPacketReceived callback) {
2461		final XmppConnection connection = account.getXmppConnection();
2462		if (connection != null) {
2463			connection.sendIqPacket(packet, callback);
2464		}
2465	}
2466
2467	public void sendPresence(final Account account) {
2468		sendPresencePacket(account, mPresenceGenerator.sendPresence(account));
2469	}
2470
2471	public void sendOfflinePresence(final Account account) {
2472		sendPresencePacket(account, mPresenceGenerator.sendOfflinePresence(account));
2473	}
2474
2475	public MessageGenerator getMessageGenerator() {
2476		return this.mMessageGenerator;
2477	}
2478
2479	public PresenceGenerator getPresenceGenerator() {
2480		return this.mPresenceGenerator;
2481	}
2482
2483	public IqGenerator getIqGenerator() {
2484		return this.mIqGenerator;
2485	}
2486
2487	public IqParser getIqParser() {
2488		return this.mIqParser;
2489	}
2490
2491	public JingleConnectionManager getJingleConnectionManager() {
2492		return this.mJingleConnectionManager;
2493	}
2494
2495	public MessageArchiveService getMessageArchiveService() {
2496		return this.mMessageArchiveService;
2497	}
2498
2499	public List<Contact> findContacts(Jid jid) {
2500		ArrayList<Contact> contacts = new ArrayList<>();
2501		for (Account account : getAccounts()) {
2502			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
2503				Contact contact = account.getRoster().getContactFromRoster(jid);
2504				if (contact != null) {
2505					contacts.add(contact);
2506				}
2507			}
2508		}
2509		return contacts;
2510	}
2511
2512	public NotificationService getNotificationService() {
2513		return this.mNotificationService;
2514	}
2515
2516	public HttpConnectionManager getHttpConnectionManager() {
2517		return this.mHttpConnectionManager;
2518	}
2519
2520	public void resendFailedMessages(final Message message) {
2521		final Collection<Message> messages = new ArrayList<>();
2522		Message current = message;
2523		while (current.getStatus() == Message.STATUS_SEND_FAILED) {
2524			messages.add(current);
2525			if (current.mergeable(current.next())) {
2526				current = current.next();
2527			} else {
2528				break;
2529			}
2530		}
2531		for (final Message msg : messages) {
2532			msg.setTime(System.currentTimeMillis());
2533			markMessage(msg, Message.STATUS_WAITING);
2534			this.resendMessage(msg,false);
2535		}
2536	}
2537
2538	public void clearConversationHistory(final Conversation conversation) {
2539		conversation.clearMessages();
2540		conversation.setHasMessagesLeftOnServer(false); //avoid messages getting loaded through mam
2541		new Thread(new Runnable() {
2542			@Override
2543			public void run() {
2544				databaseBackend.deleteMessagesInConversation(conversation);
2545			}
2546		}).start();
2547	}
2548
2549	public void sendBlockRequest(final Blockable blockable) {
2550		if (blockable != null && blockable.getBlockedJid() != null) {
2551			final Jid jid = blockable.getBlockedJid();
2552			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid), new OnIqPacketReceived() {
2553
2554				@Override
2555				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2556					if (packet.getType() == IqPacket.TYPE.RESULT) {
2557						account.getBlocklist().add(jid);
2558						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
2559					}
2560				}
2561			});
2562		}
2563	}
2564
2565	public void sendUnblockRequest(final Blockable blockable) {
2566		if (blockable != null && blockable.getJid() != null) {
2567			final Jid jid = blockable.getBlockedJid();
2568			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetUnblockRequest(jid), new OnIqPacketReceived() {
2569				@Override
2570				public void onIqPacketReceived(final Account account, final IqPacket packet) {
2571					if (packet.getType() == IqPacket.TYPE.RESULT) {
2572						account.getBlocklist().remove(jid);
2573						updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
2574					}
2575				}
2576			});
2577		}
2578	}
2579
2580	public interface OnMoreMessagesLoaded {
2581		public void onMoreMessagesLoaded(int count, Conversation conversation);
2582
2583		public void informUser(int r);
2584	}
2585
2586	public interface OnAccountPasswordChanged {
2587		public void onPasswordChangeSucceeded();
2588
2589		public void onPasswordChangeFailed();
2590	}
2591
2592	public interface OnAffiliationChanged {
2593		public void onAffiliationChangedSuccessful(Jid jid);
2594
2595		public void onAffiliationChangeFailed(Jid jid, int resId);
2596	}
2597
2598	public interface OnRoleChanged {
2599		public void onRoleChangedSuccessful(String nick);
2600
2601		public void onRoleChangeFailed(String nick, int resid);
2602	}
2603
2604	public interface OnConversationUpdate {
2605		public void onConversationUpdate();
2606	}
2607
2608	public interface OnAccountUpdate {
2609		public void onAccountUpdate();
2610	}
2611
2612	public interface OnRosterUpdate {
2613		public void onRosterUpdate();
2614	}
2615
2616	public interface OnMucRosterUpdate {
2617		public void onMucRosterUpdate();
2618	}
2619
2620	public interface OnConferenceOptionsPushed {
2621		public void onPushSucceeded();
2622
2623		public void onPushFailed();
2624	}
2625
2626	public interface OnShowErrorToast {
2627		void onShowErrorToast(int resId);
2628	}
2629
2630	public class XmppConnectionBinder extends Binder {
2631		public XmppConnectionService getService() {
2632			return XmppConnectionService.this;
2633		}
2634	}
2635}