XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.text.ParseException;
   4import java.text.SimpleDateFormat;
   5import java.util.Collections;
   6import java.util.Comparator;
   7import java.util.Date;
   8import java.util.Hashtable;
   9import java.util.List;
  10import java.util.Locale;
  11import java.util.Random;
  12
  13import org.openintents.openpgp.util.OpenPgpApi;
  14import org.openintents.openpgp.util.OpenPgpServiceConnection;
  15
  16import net.java.otr4j.OtrException;
  17import net.java.otr4j.session.Session;
  18import net.java.otr4j.session.SessionStatus;
  19import eu.siacs.conversations.crypto.PgpEngine;
  20import eu.siacs.conversations.entities.Account;
  21import eu.siacs.conversations.entities.Contact;
  22import eu.siacs.conversations.entities.Conversation;
  23import eu.siacs.conversations.entities.Message;
  24import eu.siacs.conversations.entities.MucOptions;
  25import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  26import eu.siacs.conversations.entities.Presences;
  27import eu.siacs.conversations.parser.MessageParser;
  28import eu.siacs.conversations.persistance.DatabaseBackend;
  29import eu.siacs.conversations.persistance.FileBackend;
  30import eu.siacs.conversations.ui.OnAccountListChangedListener;
  31import eu.siacs.conversations.ui.OnConversationListChangedListener;
  32import eu.siacs.conversations.ui.UiCallback;
  33import eu.siacs.conversations.utils.ExceptionHelper;
  34import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  35import eu.siacs.conversations.utils.PhoneHelper;
  36import eu.siacs.conversations.utils.UIHelper;
  37import eu.siacs.conversations.xml.Element;
  38import eu.siacs.conversations.xmpp.OnBindListener;
  39import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  40import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  41import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  42import eu.siacs.conversations.xmpp.OnStatusChanged;
  43import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  44import eu.siacs.conversations.xmpp.XmppConnection;
  45import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  46import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  47import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  48import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  49import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  50import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  51import android.app.AlarmManager;
  52import android.app.PendingIntent;
  53import android.app.Service;
  54import android.content.Context;
  55import android.content.Intent;
  56import android.content.SharedPreferences;
  57import android.database.ContentObserver;
  58import android.net.ConnectivityManager;
  59import android.net.NetworkInfo;
  60import android.net.Uri;
  61import android.os.Binder;
  62import android.os.Bundle;
  63import android.os.IBinder;
  64import android.os.Looper;
  65import android.os.PowerManager;
  66import android.os.PowerManager.WakeLock;
  67import android.os.SystemClock;
  68import android.preference.PreferenceManager;
  69import android.provider.ContactsContract;
  70import android.util.Log;
  71
  72public class XmppConnectionService extends Service {
  73
  74	protected static final String LOGTAG = "xmppService";
  75	public DatabaseBackend databaseBackend;
  76	private FileBackend fileBackend;
  77
  78	public long startDate;
  79
  80	private static final int PING_MAX_INTERVAL = 300;
  81	private static final int PING_MIN_INTERVAL = 10;
  82	private static final int PING_TIMEOUT = 5;
  83	private static final int CONNECT_TIMEOUT = 60;
  84	private static final long CARBON_GRACE_PERIOD = 60000L;
  85	
  86	private static String ACTION_MERGE_PHONE_CONTACTS = "merge_phone_contacts";
  87
  88	private MessageParser mMessageParser = new MessageParser(this);
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
  93			this);
  94
  95	private OnConversationListChangedListener convChangedListener = null;
  96	private int convChangedListenerCount = 0;
  97	private OnAccountListChangedListener accountChangedListener = null;
  98	private OnTLSExceptionReceived tlsException = null;
  99
 100	public void setOnTLSExceptionReceivedListener(
 101			OnTLSExceptionReceived listener) {
 102		tlsException = listener;
 103	}
 104
 105	private Random mRandom = new Random(System.currentTimeMillis());
 106
 107	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 108
 109	private ContentObserver contactObserver = new ContentObserver(null) {
 110		@Override
 111		public void onChange(boolean selfChange) {
 112			super.onChange(selfChange);
 113			Intent intent = new Intent(getApplicationContext(), XmppConnectionService.class);
 114			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 115			startService(intent);
 116		}
 117	};
 118
 119	private final IBinder mBinder = new XmppConnectionBinder();
 120	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 121
 122		@Override
 123		public void onMessagePacketReceived(Account account,
 124				MessagePacket packet) {
 125			Message message = null;
 126			boolean notify = true;
 127			if (getPreferences().getBoolean(
 128					"notification_grace_period_after_carbon_received", true)) {
 129				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 130			}
 131
 132			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 133				String pgpBody = mMessageParser.getPgpBody(packet);
 134				if (pgpBody != null) {
 135					message = mMessageParser.parsePgpChat(pgpBody, packet,
 136							account);
 137					message.markUnread();
 138				} else if ((packet.getBody() != null)
 139						&& (packet.getBody().startsWith("?OTR"))) {
 140					message = mMessageParser.parseOtrChat(packet, account);
 141					if (message != null) {
 142						message.markUnread();
 143					}
 144				} else if (packet.hasChild("body")) {
 145					message = mMessageParser
 146							.parsePlainTextChat(packet, account);
 147					message.markUnread();
 148				} else if (packet.hasChild("received")
 149						|| (packet.hasChild("sent"))) {
 150					message = mMessageParser
 151							.parseCarbonMessage(packet, account);
 152					if (message != null) {
 153						if (message.getStatus() == Message.STATUS_SEND) {
 154							lastCarbonMessageReceived = SystemClock
 155									.elapsedRealtime();
 156							notify = false;
 157							message.getConversation().markRead();
 158						} else {
 159							message.markUnread();
 160						}
 161					}
 162				}
 163
 164			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 165				message = mMessageParser.parseGroupchat(packet, account);
 166				if (message != null) {
 167					if (message.getStatus() == Message.STATUS_RECIEVED) {
 168						message.markUnread();
 169					} else {
 170						message.getConversation().markRead();
 171						notify = false;
 172					}
 173				}
 174			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 175				mMessageParser.parseError(packet, account);
 176				return;
 177			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 178				if (packet.hasChild("x")) {
 179					Element x = packet.findChild("x");
 180					if (x.hasChild("invite")) {
 181						findOrCreateConversation(account, packet.getFrom(),
 182								true);
 183						if (convChangedListener != null) {
 184							convChangedListener.onConversationListChanged();
 185						}
 186						Log.d(LOGTAG,
 187								"invitation received to " + packet.getFrom());
 188					}
 189
 190				} else {
 191					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 192				}
 193			}
 194			if ((message == null) || (message.getBody() == null)) {
 195				return;
 196			}
 197			if (packet.hasChild("delay")) {
 198				try {
 199					String stamp = packet.findChild("delay").getAttribute(
 200							"stamp");
 201					stamp = stamp.replace("Z", "+0000");
 202					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 203							.parse(stamp);
 204					message.setTime(date.getTime());
 205				} catch (ParseException e) {
 206					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 207				}
 208			}
 209			Conversation conversation = message.getConversation();
 210			conversation.getMessages().add(message);
 211			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 212				databaseBackend.createMessage(message);
 213			}
 214			if (convChangedListener != null) {
 215				convChangedListener.onConversationListChanged();
 216			} else {
 217				UIHelper.updateNotification(getApplicationContext(),
 218						getConversations(), message.getConversation(), notify);
 219			}
 220		}
 221	};
 222	private OnStatusChanged statusListener = new OnStatusChanged() {
 223
 224		@Override
 225		public void onStatusChanged(Account account) {
 226			if (accountChangedListener != null) {
 227				accountChangedListener.onAccountListChangedListener();
 228			}
 229			if (account.getStatus() == Account.STATUS_ONLINE) {
 230				List<Conversation> conversations = getConversations();
 231				for (int i = 0; i < conversations.size(); ++i) {
 232					if (conversations.get(i).getAccount() == account) {
 233						sendUnsendMessages(conversations.get(i));
 234					}
 235				}
 236				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 237			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 238				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 239					int timeToReconnect = mRandom.nextInt(50) + 10;
 240					scheduleWakeupCall(timeToReconnect, false);
 241				}
 242
 243			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 244				databaseBackend.updateAccount(account);
 245				reconnectAccount(account, true);
 246			} else if (account.getStatus() != Account.STATUS_CONNECTING) {
 247				int next = account.getXmppConnection().getTimeToNextAttempt();
 248				Log.d(LOGTAG, account.getJid()
 249						+ ": error connecting account. try again in " + next
 250						+ "s for the "
 251						+ (account.getXmppConnection().getAttempt() + 1)
 252						+ " time");
 253				scheduleWakeupCall(next, false);
 254			}
 255			UIHelper.showErrorNotification(getApplicationContext(),
 256					getAccounts());
 257		}
 258	};
 259
 260	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 261
 262		@Override
 263		public void onPresencePacketReceived(final Account account,
 264				PresencePacket packet) {
 265			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 266				Conversation muc = findMuc(
 267						packet.getAttribute("from").split("/")[0], account);
 268				if (muc != null) {
 269					muc.getMucOptions().processPacket(packet);
 270				} else {
 271					Log.d(LOGTAG, account.getJid()
 272							+ ": could not find muc for received muc package "
 273							+ packet.toString());
 274				}
 275			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 276				Conversation muc = findMuc(
 277						packet.getAttribute("from").split("/")[0], account);
 278				if (muc != null) {
 279					Log.d(LOGTAG,
 280							account.getJid() + ": reading muc status packet "
 281									+ packet.toString());
 282					int error = muc.getMucOptions().getError();
 283					muc.getMucOptions().processPacket(packet);
 284					if ((muc.getMucOptions().getError() != error)
 285							&& (convChangedListener != null)) {
 286						Log.d(LOGTAG, "muc error status changed");
 287						convChangedListener.onConversationListChanged();
 288					}
 289				}
 290			} else {
 291				String[] fromParts = packet.getAttribute("from").split("/");
 292				String type = packet.getAttribute("type");
 293				if (fromParts[0].equals(account.getJid())) {
 294					if (fromParts.length == 2) {
 295						if (type == null) {
 296							account.updatePresence(fromParts[1], Presences
 297									.parseShow(packet.findChild("show")));
 298						} else if (type.equals("unavailable")) {
 299							account.removePresence(fromParts[1]);
 300						}
 301					}
 302
 303				} else {
 304					Contact contact = account.getRoster().getContact(
 305							packet.getFrom());
 306					/*
 307					 * if (contact == null) { if ("subscribe".equals(type)) {
 308					 * account.getXmppConnection().addPendingSubscription(
 309					 * fromParts[0]); } else { // Log.d(LOGTAG,packet.getFrom()+
 310					 * // " could not be found"); } return; }
 311					 */
 312					if (type == null) {
 313						if (fromParts.length == 2) {
 314							contact.updatePresence(fromParts[1], Presences
 315									.parseShow(packet.findChild("show")));
 316							PgpEngine pgp = getPgpEngine();
 317							if (pgp != null) {
 318								Element x = packet.findChild("x",
 319										"jabber:x:signed");
 320								if (x != null) {
 321									Element status = packet.findChild("status");
 322									String msg;
 323									if (status != null) {
 324										msg = status.getContent();
 325									} else {
 326										msg = "";
 327									}
 328									contact.setPgpKeyId(pgp.fetchKeyId(account,
 329											msg, x.getContent()));
 330									Log.d("xmppService",
 331											account.getJid()
 332													+ ": fetched key id for "
 333													+ contact.getJid()
 334													+ " was:"
 335													+ contact.getPgpKeyId());
 336								}
 337							}
 338						} else {
 339							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 340						}
 341					} else if (type.equals("unavailable")) {
 342						if (fromParts.length != 2) {
 343							contact.clearPresences();
 344						} else {
 345							contact.removePresence(fromParts[1]);
 346						}
 347					} else if (type.equals("subscribe")) {
 348						Log.d(LOGTAG, "received subscribe packet from "
 349								+ packet.getFrom());
 350						if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
 351							Log.d(LOGTAG, "preemptive grant; granting");
 352							sendPresenceUpdatesTo(contact);
 353							contact.setOption(Contact.Options.FROM);
 354							contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
 355							if ((contact.getOption(Contact.Options.ASKING))
 356									&& (!contact.getOption(Contact.Options.TO))) {
 357								requestPresenceUpdatesFrom(contact);
 358							}
 359						} else {
 360							account.getXmppConnection().addPendingSubscription(
 361									fromParts[0]);
 362						}
 363					} else {
 364						// Log.d(LOGTAG, packet.toString());
 365					}
 366				}
 367			}
 368		}
 369	};
 370
 371	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 372
 373		@Override
 374		public void onIqPacketReceived(Account account, IqPacket packet) {
 375			if (packet.hasChild("query", "jabber:iq:roster")) {
 376				String from = packet.getFrom();
 377				if ((from == null) || (from.equals(account.getJid()))) {
 378					Element query = packet.findChild("query");
 379					processRosterItems(account, query);
 380				} else {
 381					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 382				}
 383			} else if (packet
 384					.hasChild("open", "http://jabber.org/protocol/ibb")
 385					|| packet
 386							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 387				XmppConnectionService.this.mJingleConnectionManager
 388						.deliverIbbPacket(account, packet);
 389			} else if (packet.hasChild("query",
 390					"http://jabber.org/protocol/disco#info")) {
 391				IqPacket iqResponse = packet
 392						.generateRespone(IqPacket.TYPE_RESULT);
 393				Element query = iqResponse.addChild("query",
 394						"http://jabber.org/protocol/disco#info");
 395				query.addChild("feature").setAttribute("var",
 396						"urn:xmpp:jingle:1");
 397				query.addChild("feature").setAttribute("var",
 398						"urn:xmpp:jingle:apps:file-transfer:3");
 399				query.addChild("feature").setAttribute("var",
 400						"urn:xmpp:jingle:transports:s5b:1");
 401				query.addChild("feature").setAttribute("var",
 402						"urn:xmpp:jingle:transports:ibb:1");
 403				account.getXmppConnection().sendIqPacket(iqResponse, null);
 404			} else {
 405				if ((packet.getType() == IqPacket.TYPE_GET)
 406						|| (packet.getType() == IqPacket.TYPE_SET)) {
 407					IqPacket response = packet
 408							.generateRespone(IqPacket.TYPE_ERROR);
 409					Element error = response.addChild("error");
 410					error.setAttribute("type", "cancel");
 411					error.addChild("feature-not-implemented",
 412							"urn:ietf:params:xml:ns:xmpp-stanzas");
 413					account.getXmppConnection().sendIqPacket(response, null);
 414				}
 415			}
 416		}
 417	};
 418
 419	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 420
 421		@Override
 422		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 423			mJingleConnectionManager.deliverPacket(account, packet);
 424		}
 425	};
 426
 427	private OpenPgpServiceConnection pgpServiceConnection;
 428	private PgpEngine mPgpEngine = null;
 429	private Intent pingIntent;
 430	private PendingIntent pendingPingIntent = null;
 431	private WakeLock wakeLock;
 432	private PowerManager pm;
 433
 434	public PgpEngine getPgpEngine() {
 435		if (pgpServiceConnection.isBound()) {
 436			if (this.mPgpEngine == null) {
 437				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 438						getApplicationContext(),
 439						pgpServiceConnection.getService()), this);
 440			}
 441			return mPgpEngine;
 442		} else {
 443			return null;
 444		}
 445
 446	}
 447
 448	public FileBackend getFileBackend() {
 449		return this.fileBackend;
 450	}
 451
 452	public Message attachImageToConversation(final Conversation conversation,
 453			final Uri uri, final UiCallback callback) {
 454		final Message message;
 455		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 456			message = new Message(conversation, "",
 457					Message.ENCRYPTION_DECRYPTED);
 458		} else {
 459			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 460		}
 461		message.setPresence(conversation.getNextPresence());
 462		message.setType(Message.TYPE_IMAGE);
 463		message.setStatus(Message.STATUS_OFFERED);
 464		new Thread(new Runnable() {
 465
 466			@Override
 467			public void run() {
 468				try {
 469					getFileBackend().copyImageToPrivateStorage(message, uri);
 470					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 471						getPgpEngine().encrypt(message, callback);
 472					} else {
 473						callback.success();
 474					}
 475				} catch (FileBackend.ImageCopyException e) {
 476					callback.error(e.getResId());
 477				}
 478			}
 479		}).start();
 480		return message;
 481	}
 482
 483	protected Conversation findMuc(String name, Account account) {
 484		for (Conversation conversation : this.conversations) {
 485			if (conversation.getContactJid().split("/")[0].equals(name)
 486					&& (conversation.getAccount() == account)) {
 487				return conversation;
 488			}
 489		}
 490		return null;
 491	}
 492
 493	private void processRosterItems(Account account, Element elements) {
 494		String version = elements.getAttribute("ver");
 495		if (version != null) {
 496			account.getRoster().setVersion(version);
 497		}
 498		for (Element item : elements.getChildren()) {
 499			if (item.getName().equals("item")) {
 500				String jid = item.getAttribute("jid");
 501				String name = item.getAttribute("name");
 502				String subscription = item.getAttribute("subscription");
 503				Contact contact = account.getRoster().getContact(jid);
 504				contact.setServerName(name);
 505				if (subscription.equals("remove")) {
 506					contact.resetOption(Contact.Options.IN_ROSTER);
 507				} else {
 508					contact.setOption(Contact.Options.IN_ROSTER);
 509					contact.parseSubscriptionFromElement(item);
 510				}
 511			}
 512		}
 513	}
 514
 515	public class XmppConnectionBinder extends Binder {
 516		public XmppConnectionService getService() {
 517			return XmppConnectionService.this;
 518		}
 519	}
 520
 521	@Override
 522	public int onStartCommand(Intent intent, int flags, int startId) {
 523		this.wakeLock.acquire();
 524		if ((intent.getAction()!=null)&&(intent.getAction().equals(ACTION_MERGE_PHONE_CONTACTS))) {
 525			mergePhoneContactsWithRoster();
 526		}
 527		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 528				.getSystemService(Context.CONNECTIVITY_SERVICE);
 529		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 530		boolean isConnected = activeNetwork != null
 531				&& activeNetwork.isConnected();
 532
 533		for (Account account : accounts) {
 534			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 535				if (!isConnected) {
 536					account.setStatus(Account.STATUS_NO_INTERNET);
 537					if (statusListener != null) {
 538						statusListener.onStatusChanged(account);
 539					}
 540				} else {
 541					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 542						account.setStatus(Account.STATUS_OFFLINE);
 543						if (statusListener != null) {
 544							statusListener.onStatusChanged(account);
 545						}
 546					}
 547					if (account.getStatus() == Account.STATUS_ONLINE) {
 548						long lastReceived = account.getXmppConnection().lastPaketReceived;
 549						long lastSent = account.getXmppConnection().lastPingSent;
 550						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 551							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 552							this.reconnectAccount(account, true);
 553						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 554							account.getXmppConnection().sendPing();
 555							account.getXmppConnection().lastPingSent = SystemClock
 556									.elapsedRealtime();
 557							this.scheduleWakeupCall(2, false);
 558						}
 559					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 560						if (account.getXmppConnection() == null) {
 561							account.setXmppConnection(this
 562									.createConnection(account));
 563						}
 564						account.getXmppConnection().lastPingSent = SystemClock
 565								.elapsedRealtime();
 566						new Thread(account.getXmppConnection()).start();
 567					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 568							&& ((SystemClock.elapsedRealtime() - account
 569									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 570						Log.d(LOGTAG, account.getJid()
 571								+ ": time out during connect reconnecting");
 572						reconnectAccount(account, true);
 573					} else {
 574						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 575							reconnectAccount(account, true);
 576						}
 577					}
 578					// in any case. reschedule wakup call
 579					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 580				}
 581				if (accountChangedListener != null) {
 582					accountChangedListener.onAccountListChangedListener();
 583				}
 584			}
 585		}
 586		if (wakeLock.isHeld()) {
 587			wakeLock.release();
 588		}
 589		return START_STICKY;
 590	}
 591
 592	@Override
 593	public void onCreate() {
 594		ExceptionHelper.init(getApplicationContext());
 595		this.databaseBackend = DatabaseBackend
 596				.getInstance(getApplicationContext());
 597		this.fileBackend = new FileBackend(getApplicationContext());
 598		this.accounts = databaseBackend.getAccounts();
 599
 600		for (Account account : this.accounts) {
 601			this.databaseBackend.readRoster(account.getRoster());
 602		}
 603		this.mergePhoneContactsWithRoster();
 604		this.getConversations();
 605
 606		getContentResolver().registerContentObserver(
 607				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 608		this.pgpServiceConnection = new OpenPgpServiceConnection(
 609				getApplicationContext(), "org.sufficientlysecure.keychain");
 610		this.pgpServiceConnection.bindToService();
 611
 612		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 613		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 614				"XmppConnectionService");
 615	}
 616
 617	@Override
 618	public void onDestroy() {
 619		Log.d(LOGTAG, "stopping service");
 620		super.onDestroy();
 621		for (Account account : accounts) {
 622			databaseBackend.writeRoster(account.getRoster());
 623			if (account.getXmppConnection() != null) {
 624				disconnect(account, true);
 625			}
 626		}
 627	}
 628
 629	protected void scheduleWakeupCall(int seconds, boolean ping) {
 630		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 631		Context context = getApplicationContext();
 632		AlarmManager alarmManager = (AlarmManager) context
 633				.getSystemService(Context.ALARM_SERVICE);
 634
 635		if (ping) {
 636			if (this.pingIntent == null) {
 637				this.pingIntent = new Intent(context, EventReceiver.class);
 638				this.pingIntent.setAction("ping");
 639				this.pingIntent.putExtra("time", timeToWake);
 640				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 641						this.pingIntent, 0);
 642				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 643						timeToWake, pendingPingIntent);
 644			} else {
 645				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 646				if (scheduledTime < SystemClock.elapsedRealtime()
 647						|| (scheduledTime > timeToWake)) {
 648					this.pingIntent.putExtra("time", timeToWake);
 649					alarmManager.cancel(this.pendingPingIntent);
 650					this.pendingPingIntent = PendingIntent.getBroadcast(
 651							context, 0, this.pingIntent, 0);
 652					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 653							timeToWake, pendingPingIntent);
 654				}
 655			}
 656		} else {
 657			Intent intent = new Intent(context, EventReceiver.class);
 658			intent.setAction("ping_check");
 659			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 660					intent, 0);
 661			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 662					alarmIntent);
 663		}
 664
 665	}
 666
 667	public XmppConnection createConnection(Account account) {
 668		SharedPreferences sharedPref = getPreferences();
 669		account.setResource(sharedPref.getString("resource", "mobile")
 670				.toLowerCase(Locale.getDefault()));
 671		XmppConnection connection = new XmppConnection(account, this.pm);
 672		connection.setOnMessagePacketReceivedListener(this.messageListener);
 673		connection.setOnStatusChangedListener(this.statusListener);
 674		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 675		connection
 676				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 677		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 678		connection
 679				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 680
 681					@Override
 682					public void onTLSExceptionReceived(String fingerprint,
 683							Account account) {
 684						Log.d(LOGTAG, "tls exception arrived in service");
 685						if (tlsException != null) {
 686							tlsException.onTLSExceptionReceived(fingerprint,
 687									account);
 688						}
 689					}
 690				});
 691		connection.setOnBindListener(new OnBindListener() {
 692
 693			@Override
 694			public void onBind(final Account account) {
 695				account.getRoster().clearPresences();
 696				account.clearPresences(); // self presences
 697				fetchRosterFromServer(account);
 698				sendPresence(account);
 699				connectMultiModeConversations(account);
 700				if (convChangedListener != null) {
 701					convChangedListener.onConversationListChanged();
 702				}
 703			}
 704		});
 705		return connection;
 706	}
 707
 708	synchronized public void sendMessage(Message message, String presence) {
 709		Account account = message.getConversation().getAccount();
 710		Conversation conv = message.getConversation();
 711		MessagePacket packet = null;
 712		boolean saveInDb = false;
 713		boolean addToConversation = false;
 714		boolean send = false;
 715		if (account.getStatus() == Account.STATUS_ONLINE) {
 716			if (message.getType() == Message.TYPE_IMAGE) {
 717				mJingleConnectionManager.createNewConnection(message);
 718			} else {
 719				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 720					if (!conv.hasValidOtrSession()) {
 721						// starting otr session. messages will be send later
 722						conv.startOtrSession(getApplicationContext(), presence,
 723								true);
 724					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 725						// otr session aleary exists, creating message packet
 726						// accordingly
 727						packet = prepareMessagePacket(account, message,
 728								conv.getOtrSession());
 729						send = true;
 730						message.setStatus(Message.STATUS_SEND);
 731					}
 732					saveInDb = true;
 733					addToConversation = true;
 734				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 735					message.getConversation().endOtrIfNeeded();
 736					packet = prepareMessagePacket(account, message, null);
 737					packet.setBody("This is an XEP-0027 encryted message");
 738					packet.addChild("x", "jabber:x:encrypted").setContent(
 739							message.getEncryptedBody());
 740					message.setStatus(Message.STATUS_SEND);
 741					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 742					saveInDb = true;
 743					addToConversation = true;
 744					send = true;
 745				} else {
 746					message.getConversation().endOtrIfNeeded();
 747					// don't encrypt
 748					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 749						message.setStatus(Message.STATUS_SEND);
 750					}
 751					packet = prepareMessagePacket(account, message, null);
 752					send = true;
 753					saveInDb = true;
 754					addToConversation = true;
 755				}
 756			}
 757		} else {
 758			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 759				String pgpBody = message.getEncryptedBody();
 760				String decryptedBody = message.getBody();
 761				message.setBody(pgpBody);
 762				databaseBackend.createMessage(message);
 763				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 764				message.setBody(decryptedBody);
 765				addToConversation = true;
 766			} else {
 767				saveInDb = true;
 768				addToConversation = true;
 769			}
 770
 771		}
 772		if (saveInDb) {
 773			databaseBackend.createMessage(message);
 774		}
 775		if (addToConversation) {
 776			conv.getMessages().add(message);
 777			if (convChangedListener != null) {
 778				convChangedListener.onConversationListChanged();
 779			}
 780		}
 781		if ((send) && (packet != null)) {
 782			account.getXmppConnection().sendMessagePacket(packet);
 783		}
 784
 785	}
 786
 787	private void sendUnsendMessages(Conversation conversation) {
 788		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 789			if (conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND) {
 790				resendMessage(conversation.getMessages().get(i));
 791			}
 792		}
 793	}
 794
 795	private void resendMessage(Message message) {
 796		Account account = message.getConversation().getAccount();
 797		MessagePacket packet = null;
 798		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 799			packet = prepareMessagePacket(account, message, null);
 800		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 801			packet = prepareMessagePacket(account, message, null);
 802			packet.setBody("This is an XEP-0027 encryted message");
 803			if (message.getEncryptedBody() == null) {
 804				markMessage(message, Message.STATUS_SEND_FAILED);
 805				return;
 806			}
 807			packet.addChild("x", "jabber:x:encrypted").setContent(
 808					message.getEncryptedBody());
 809		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 810			packet = prepareMessagePacket(account, message, null);
 811			packet.setBody("This is an XEP-0027 encryted message");
 812			packet.addChild("x", "jabber:x:encrypted").setContent(
 813					message.getBody());
 814		}
 815		if (packet != null) {
 816			account.getXmppConnection().sendMessagePacket(packet);
 817			markMessage(message, Message.STATUS_SEND);
 818		}
 819	}
 820
 821	public MessagePacket prepareMessagePacket(Account account, Message message,
 822			Session otrSession) {
 823		MessagePacket packet = new MessagePacket();
 824		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 825			packet.setType(MessagePacket.TYPE_CHAT);
 826			if (otrSession != null) {
 827				try {
 828					packet.setBody(otrSession.transformSending(message
 829							.getBody()));
 830				} catch (OtrException e) {
 831					Log.d(LOGTAG,
 832							account.getJid()
 833									+ ": could not encrypt message to "
 834									+ message.getCounterpart());
 835				}
 836				packet.addChild("private", "urn:xmpp:carbons:2");
 837				packet.addChild("no-copy", "urn:xmpp:hints");
 838				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 839						+ otrSession.getSessionID().getUserID());
 840				packet.setFrom(account.getFullJid());
 841			} else {
 842				packet.setBody(message.getBody());
 843				packet.setTo(message.getCounterpart());
 844				packet.setFrom(account.getJid());
 845			}
 846		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 847			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 848			packet.setBody(message.getBody());
 849			packet.setTo(message.getCounterpart().split("/")[0]);
 850			packet.setFrom(account.getJid());
 851		}
 852		packet.setId(message.getUuid());
 853		return packet;
 854	}
 855
 856	public void fetchRosterFromServer(Account account) {
 857		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 858		if (!"".equals(account.getRosterVersion())) {
 859			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 860					+ account.getRosterVersion());
 861		} else {
 862			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 863		}
 864		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 865				account.getRosterVersion());
 866		account.getXmppConnection().sendIqPacket(iqPacket,
 867				new OnIqPacketReceived() {
 868
 869					@Override
 870					public void onIqPacketReceived(final Account account,
 871							IqPacket packet) {
 872						Element roster = packet.findChild("query");
 873						if (roster != null) {
 874							account.getRoster().markAllAsNotInRoster();
 875							processRosterItems(account, roster);
 876						}
 877					}
 878				});
 879	}
 880
 881	private void mergePhoneContactsWithRoster() {
 882		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 883				new OnPhoneContactsLoadedListener() {
 884					@Override
 885					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 886						for (Bundle phoneContact : phoneContacts) {
 887							for (Account account : accounts) {
 888								String jid = phoneContact.getString("jid");
 889								Contact contact = account.getRoster()
 890										.getContact(jid);
 891								String systemAccount = phoneContact
 892										.getInt("phoneid")
 893										+ "#"
 894										+ phoneContact.getString("lookup");
 895								contact.setSystemAccount(systemAccount);
 896								contact.setPhotoUri(phoneContact
 897										.getString("photouri"));
 898								contact.setSystemName(phoneContact
 899										.getString("displayname"));
 900							}
 901						}
 902					}
 903				});
 904	}
 905
 906	public List<Conversation> getConversations() {
 907		if (this.conversations == null) {
 908			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 909			for (Account account : this.accounts) {
 910				accountLookupTable.put(account.getUuid(), account);
 911			}
 912			this.conversations = databaseBackend
 913					.getConversations(Conversation.STATUS_AVAILABLE);
 914			for (Conversation conv : this.conversations) {
 915				Account account = accountLookupTable.get(conv.getAccountUuid());
 916				conv.setAccount(account);
 917				conv.setMessages(databaseBackend.getMessages(conv, 50));
 918			}
 919		}
 920		Collections.sort(this.conversations, new Comparator<Conversation>() {
 921			@Override
 922			public int compare(Conversation lhs, Conversation rhs) {
 923				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
 924						.getLatestMessage().getTimeSent());
 925			}
 926		});
 927		return this.conversations;
 928	}
 929
 930	public List<Account> getAccounts() {
 931		return this.accounts;
 932	}
 933
 934	public Conversation findOrCreateConversation(Account account, String jid,
 935			boolean muc) {
 936		for (Conversation conv : this.getConversations()) {
 937			if ((conv.getAccount().equals(account))
 938					&& (conv.getContactJid().split("/")[0].equals(jid))) {
 939				return conv;
 940			}
 941		}
 942		Conversation conversation = databaseBackend.findConversation(account,
 943				jid);
 944		if (conversation != null) {
 945			conversation.setStatus(Conversation.STATUS_AVAILABLE);
 946			conversation.setAccount(account);
 947			if (muc) {
 948				conversation.setMode(Conversation.MODE_MULTI);
 949			} else {
 950				conversation.setMode(Conversation.MODE_SINGLE);
 951			}
 952			conversation.setMessages(databaseBackend.getMessages(conversation,
 953					50));
 954			this.databaseBackend.updateConversation(conversation);
 955		} else {
 956			String conversationName;
 957			Contact contact = account.getRoster().getContact(jid);
 958			if (contact != null) {
 959				conversationName = contact.getDisplayName();
 960			} else {
 961				conversationName = jid.split("@")[0];
 962			}
 963			if (muc) {
 964				conversation = new Conversation(conversationName, account, jid,
 965						Conversation.MODE_MULTI);
 966			} else {
 967				conversation = new Conversation(conversationName, account, jid,
 968						Conversation.MODE_SINGLE);
 969			}
 970			this.databaseBackend.createConversation(conversation);
 971		}
 972		this.conversations.add(conversation);
 973		if ((account.getStatus() == Account.STATUS_ONLINE)
 974				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
 975			joinMuc(conversation);
 976		}
 977		if (this.convChangedListener != null) {
 978			this.convChangedListener.onConversationListChanged();
 979		}
 980		return conversation;
 981	}
 982
 983	public void archiveConversation(Conversation conversation) {
 984		if (conversation.getMode() == Conversation.MODE_MULTI) {
 985			leaveMuc(conversation);
 986		} else {
 987			conversation.endOtrIfNeeded();
 988		}
 989		this.databaseBackend.updateConversation(conversation);
 990		this.conversations.remove(conversation);
 991		if (this.convChangedListener != null) {
 992			this.convChangedListener.onConversationListChanged();
 993		}
 994	}
 995
 996	public void clearConversationHistory(Conversation conversation) {
 997		this.databaseBackend.deleteMessagesInConversation(conversation);
 998		this.fileBackend.removeFiles(conversation);
 999		conversation.getMessages().clear();
1000		if (this.convChangedListener != null) {
1001			this.convChangedListener.onConversationListChanged();
1002		}
1003	}
1004
1005	public int getConversationCount() {
1006		return this.databaseBackend.getConversationCount();
1007	}
1008
1009	public void createAccount(Account account) {
1010		databaseBackend.createAccount(account);
1011		this.accounts.add(account);
1012		this.reconnectAccount(account, false);
1013		if (accountChangedListener != null)
1014			accountChangedListener.onAccountListChangedListener();
1015	}
1016
1017	public void updateAccount(Account account) {
1018		this.statusListener.onStatusChanged(account);
1019		databaseBackend.updateAccount(account);
1020		reconnectAccount(account, false);
1021		if (accountChangedListener != null) {
1022			accountChangedListener.onAccountListChangedListener();
1023		}
1024		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1025	}
1026
1027	public void deleteAccount(Account account) {
1028		if (account.getXmppConnection() != null) {
1029			this.disconnect(account, true);
1030		}
1031		databaseBackend.deleteAccount(account);
1032		this.accounts.remove(account);
1033		if (accountChangedListener != null) {
1034			accountChangedListener.onAccountListChangedListener();
1035		}
1036		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1037	}
1038
1039	public void setOnConversationListChangedListener(
1040			OnConversationListChangedListener listener) {
1041		this.convChangedListener = listener;
1042		this.convChangedListenerCount++;
1043	}
1044
1045	public void removeOnConversationListChangedListener() {
1046		this.convChangedListenerCount--;
1047		if (this.convChangedListenerCount == 0) {
1048			this.convChangedListener = null;
1049		}
1050	}
1051
1052	public void setOnAccountListChangedListener(
1053			OnAccountListChangedListener listener) {
1054		this.accountChangedListener = listener;
1055	}
1056
1057	public void removeOnAccountListChangedListener() {
1058		this.accountChangedListener = null;
1059	}
1060
1061	public void connectMultiModeConversations(Account account) {
1062		List<Conversation> conversations = getConversations();
1063		for (int i = 0; i < conversations.size(); i++) {
1064			Conversation conversation = conversations.get(i);
1065			if ((conversation.getMode() == Conversation.MODE_MULTI)
1066					&& (conversation.getAccount() == account)) {
1067				joinMuc(conversation);
1068			}
1069		}
1070	}
1071
1072	public void joinMuc(Conversation conversation) {
1073		String[] mucParts = conversation.getContactJid().split("/");
1074		String muc;
1075		String nick;
1076		if (mucParts.length == 2) {
1077			muc = mucParts[0];
1078			nick = mucParts[1];
1079		} else {
1080			muc = mucParts[0];
1081			nick = conversation.getAccount().getUsername();
1082		}
1083		PresencePacket packet = new PresencePacket();
1084		packet.setAttribute("to", muc + "/" + nick);
1085		Element x = new Element("x");
1086		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1087		if (conversation.getMessages().size() != 0) {
1088			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1089			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1090			x.addChild("history").setAttribute("seconds", diff + "");
1091		}
1092		packet.addChild(x);
1093		conversation.getAccount().getXmppConnection()
1094				.sendPresencePacket(packet);
1095	}
1096
1097	private OnRenameListener renameListener = null;
1098
1099	public void setOnRenameListener(OnRenameListener listener) {
1100		this.renameListener = listener;
1101	}
1102
1103	public void renameInMuc(final Conversation conversation, final String nick) {
1104		final MucOptions options = conversation.getMucOptions();
1105		if (options.online()) {
1106			options.setOnRenameListener(new OnRenameListener() {
1107
1108				@Override
1109				public void onRename(boolean success) {
1110					if (renameListener != null) {
1111						renameListener.onRename(success);
1112					}
1113					if (success) {
1114						String jid = conversation.getContactJid().split("/")[0]
1115								+ "/" + nick;
1116						conversation.setContactJid(jid);
1117						databaseBackend.updateConversation(conversation);
1118					}
1119				}
1120			});
1121			options.flagAboutToRename();
1122			PresencePacket packet = new PresencePacket();
1123			packet.setAttribute("to",
1124					conversation.getContactJid().split("/")[0] + "/" + nick);
1125			packet.setAttribute("from", conversation.getAccount().getFullJid());
1126
1127			conversation.getAccount().getXmppConnection()
1128					.sendPresencePacket(packet, null);
1129		} else {
1130			String jid = conversation.getContactJid().split("/")[0] + "/"
1131					+ nick;
1132			conversation.setContactJid(jid);
1133			databaseBackend.updateConversation(conversation);
1134			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1135				joinMuc(conversation);
1136			}
1137		}
1138	}
1139
1140	public void leaveMuc(Conversation conversation) {
1141		PresencePacket packet = new PresencePacket();
1142		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1143				+ "/" + conversation.getMucOptions().getNick());
1144		packet.setAttribute("from", conversation.getAccount().getFullJid());
1145		packet.setAttribute("type", "unavailable");
1146		Log.d(LOGTAG, "send leaving muc " + packet);
1147		conversation.getAccount().getXmppConnection()
1148				.sendPresencePacket(packet);
1149		conversation.getMucOptions().setOffline();
1150	}
1151
1152	public void disconnect(Account account, boolean force) {
1153		if ((account.getStatus() == Account.STATUS_ONLINE)
1154				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1155			if (!force) {
1156				List<Conversation> conversations = getConversations();
1157				for (int i = 0; i < conversations.size(); i++) {
1158					Conversation conversation = conversations.get(i);
1159					if (conversation.getAccount() == account) {
1160						if (conversation.getMode() == Conversation.MODE_MULTI) {
1161							leaveMuc(conversation);
1162						} else {
1163							conversation.endOtrIfNeeded();
1164						}
1165					}
1166				}
1167			}
1168			account.getXmppConnection().disconnect(force);
1169		}
1170	}
1171
1172	@Override
1173	public IBinder onBind(Intent intent) {
1174		return mBinder;
1175	}
1176
1177	public void updateMessage(Message message) {
1178		databaseBackend.updateMessage(message);
1179	}
1180
1181	public void createContact(Contact contact) {
1182		SharedPreferences sharedPref = getPreferences();
1183		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1184		if (autoGrant) {
1185			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1186			contact.setOption(Contact.Options.ASKING);
1187		}
1188		pushContactToServer(contact);
1189		if (autoGrant) {
1190			requestPresenceUpdatesFrom(contact);
1191			if (contact.getAccount().getXmppConnection().hasPendingSubscription(
1192					contact.getJid())) {
1193				Log.d("xmppService", "contact had pending subscription");
1194				sendPresenceUpdatesTo(contact);
1195			}
1196		}
1197	}
1198	
1199	public void pushContactToServer(Contact contact) {
1200		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1201		iq.query("jabber:iq:roster").addChild(contact.asElement());
1202		Account account = contact.getAccount();
1203		account.getXmppConnection().sendIqPacket(iq, null);
1204	}
1205	
1206	public void deleteContactOnServer(Contact contact) {
1207		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1208		Element item = iq.query("jabber:iq:roster").addChild("item");
1209		item.setAttribute("jid", contact.getJid());
1210		item.setAttribute("subscription", "remove");
1211		Account account = contact.getAccount();
1212		account.getXmppConnection().sendIqPacket(iq, null);
1213	}
1214
1215	public void requestPresenceUpdatesFrom(Contact contact) {
1216		// Requesting a Subscription type=subscribe
1217		PresencePacket packet = new PresencePacket();
1218		packet.setAttribute("type", "subscribe");
1219		packet.setAttribute("to", contact.getJid());
1220		packet.setAttribute("from", contact.getAccount().getJid());
1221		Log.d(LOGTAG, packet.toString());
1222		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1223	}
1224
1225	public void stopPresenceUpdatesFrom(Contact contact) {
1226		// Unsubscribing type='unsubscribe'
1227		PresencePacket packet = new PresencePacket();
1228		packet.setAttribute("type", "unsubscribe");
1229		packet.setAttribute("to", contact.getJid());
1230		packet.setAttribute("from", contact.getAccount().getJid());
1231		Log.d(LOGTAG, packet.toString());
1232		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1233	}
1234
1235	public void stopPresenceUpdatesTo(Contact contact) {
1236		// Canceling a Subscription type=unsubscribed
1237		PresencePacket packet = new PresencePacket();
1238		packet.setAttribute("type", "unsubscribed");
1239		packet.setAttribute("to", contact.getJid());
1240		packet.setAttribute("from", contact.getAccount().getJid());
1241		Log.d(LOGTAG, packet.toString());
1242		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1243	}
1244
1245	public void sendPresenceUpdatesTo(Contact contact) {
1246		// type='subscribed'
1247		PresencePacket packet = new PresencePacket();
1248		packet.setAttribute("type", "subscribed");
1249		packet.setAttribute("to", contact.getJid());
1250		packet.setAttribute("from", contact.getAccount().getJid());
1251		Log.d(LOGTAG, packet.toString());
1252		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1253	}
1254
1255	public void sendPresence(Account account) {
1256		PresencePacket packet = new PresencePacket();
1257		packet.setAttribute("from", account.getFullJid());
1258		String sig = account.getPgpSignature();
1259		if (sig != null) {
1260			packet.addChild("status").setContent("online");
1261			packet.addChild("x", "jabber:x:signed").setContent(sig);
1262		}
1263		account.getXmppConnection().sendPresencePacket(packet);
1264	}
1265
1266	public void updateConversation(Conversation conversation) {
1267		this.databaseBackend.updateConversation(conversation);
1268	}
1269
1270	public void removeOnTLSExceptionReceivedListener() {
1271		this.tlsException = null;
1272	}
1273
1274	public void reconnectAccount(final Account account, final boolean force) {
1275		new Thread(new Runnable() {
1276
1277			@Override
1278			public void run() {
1279				if (account.getXmppConnection() != null) {
1280					disconnect(account, force);
1281				}
1282				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1283					if (account.getXmppConnection() == null) {
1284						account.setXmppConnection(createConnection(account));
1285					}
1286					Thread thread = new Thread(account.getXmppConnection());
1287					thread.start();
1288					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1289				}
1290			}
1291		}).start();
1292	}
1293
1294	public void sendConversationSubject(Conversation conversation,
1295			String subject) {
1296		MessagePacket packet = new MessagePacket();
1297		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1298		packet.setTo(conversation.getContactJid().split("/")[0]);
1299		Element subjectChild = new Element("subject");
1300		subjectChild.setContent(subject);
1301		packet.addChild(subjectChild);
1302		packet.setFrom(conversation.getAccount().getJid());
1303		Account account = conversation.getAccount();
1304		if (account.getStatus() == Account.STATUS_ONLINE) {
1305			account.getXmppConnection().sendMessagePacket(packet);
1306		}
1307	}
1308
1309	public void inviteToConference(Conversation conversation,
1310			List<Contact> contacts) {
1311		for (Contact contact : contacts) {
1312			MessagePacket packet = new MessagePacket();
1313			packet.setTo(conversation.getContactJid().split("/")[0]);
1314			packet.setFrom(conversation.getAccount().getFullJid());
1315			Element x = new Element("x");
1316			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1317			Element invite = new Element("invite");
1318			invite.setAttribute("to", contact.getJid());
1319			x.addChild(invite);
1320			packet.addChild(x);
1321			Log.d(LOGTAG, packet.toString());
1322			conversation.getAccount().getXmppConnection()
1323					.sendMessagePacket(packet);
1324		}
1325
1326	}
1327
1328	public boolean markMessage(Account account, String recipient, String uuid,
1329			int status) {
1330		for (Conversation conversation : getConversations()) {
1331			if (conversation.getContactJid().equals(recipient)
1332					&& conversation.getAccount().equals(account)) {
1333				return markMessage(conversation, uuid, status);
1334			}
1335		}
1336		return false;
1337	}
1338
1339	public boolean markMessage(Conversation conversation, String uuid,
1340			int status) {
1341		for (Message message : conversation.getMessages()) {
1342			if (message.getUuid().equals(uuid)) {
1343				markMessage(message, status);
1344				return true;
1345			}
1346		}
1347		return false;
1348	}
1349
1350	public void markMessage(Message message, int status) {
1351		message.setStatus(status);
1352		databaseBackend.updateMessage(message);
1353		if (convChangedListener != null) {
1354			convChangedListener.onConversationListChanged();
1355		}
1356	}
1357
1358	public SharedPreferences getPreferences() {
1359		return PreferenceManager
1360				.getDefaultSharedPreferences(getApplicationContext());
1361	}
1362
1363	public void updateUi(Conversation conversation, boolean notify) {
1364		if (convChangedListener != null) {
1365			convChangedListener.onConversationListChanged();
1366		} else {
1367			UIHelper.updateNotification(getApplicationContext(),
1368					getConversations(), conversation, notify);
1369		}
1370	}
1371	
1372	public Account findAccountByJid(String accountJid) {
1373		for (Account account : this.accounts) {
1374			if (account.getJid().equals(accountJid)) {
1375				return account;
1376			}
1377		}
1378		return null;
1379	}
1380}