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.OnContactStatusChanged;
  40import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  41import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  42import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  43import eu.siacs.conversations.xmpp.OnStatusChanged;
  44import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  45import eu.siacs.conversations.xmpp.XmppConnection;
  46import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  47import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  48import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  49import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  50import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  51import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  52import android.app.AlarmManager;
  53import android.app.PendingIntent;
  54import android.app.Service;
  55import android.content.Context;
  56import android.content.Intent;
  57import android.content.SharedPreferences;
  58import android.database.ContentObserver;
  59import android.net.ConnectivityManager;
  60import android.net.NetworkInfo;
  61import android.net.Uri;
  62import android.os.Binder;
  63import android.os.Bundle;
  64import android.os.IBinder;
  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	private OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 100
 101		@Override
 102		public void onContactStatusChanged(Contact contact) {
 103			Conversation conversation = findActiveConversation(contact);
 104			if (conversation != null) {
 105				conversation.endOtrIfNeeded();
 106			}
 107		}
 108	};
 109
 110	public void setOnTLSExceptionReceivedListener(
 111			OnTLSExceptionReceived listener) {
 112		tlsException = listener;
 113	}
 114
 115	private Random mRandom = new Random(System.currentTimeMillis());
 116
 117	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 118
 119	private ContentObserver contactObserver = new ContentObserver(null) {
 120		@Override
 121		public void onChange(boolean selfChange) {
 122			super.onChange(selfChange);
 123			Intent intent = new Intent(getApplicationContext(),
 124					XmppConnectionService.class);
 125			intent.setAction(ACTION_MERGE_PHONE_CONTACTS);
 126			startService(intent);
 127		}
 128	};
 129
 130	private final IBinder mBinder = new XmppConnectionBinder();
 131	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 132
 133		@Override
 134		public void onMessagePacketReceived(Account account,
 135				MessagePacket packet) {
 136			Message message = null;
 137			boolean notify = true;
 138			if (getPreferences().getBoolean(
 139					"notification_grace_period_after_carbon_received", true)) {
 140				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 141			}
 142
 143			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 144				if ((packet.getBody() != null)
 145						&& (packet.getBody().startsWith("?OTR"))) {
 146					message = mMessageParser.parseOtrChat(packet, account);
 147					if (message != null) {
 148						message.markUnread();
 149					}
 150				} else if (packet.hasChild("body")) {
 151					message = mMessageParser.parseChat(packet, account);
 152					message.markUnread();
 153				} else if (packet.hasChild("received")
 154						|| (packet.hasChild("sent"))) {
 155					message = mMessageParser
 156							.parseCarbonMessage(packet, account);
 157					if (message != null) {
 158						if (message.getStatus() == Message.STATUS_SEND) {
 159							lastCarbonMessageReceived = SystemClock
 160									.elapsedRealtime();
 161							notify = false;
 162							message.getConversation().markRead();
 163						} else {
 164							message.markUnread();
 165						}
 166					}
 167				}
 168
 169			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 170				message = mMessageParser.parseGroupchat(packet, account);
 171				if (message != null) {
 172					if (message.getStatus() == Message.STATUS_RECIEVED) {
 173						message.markUnread();
 174					} else {
 175						message.getConversation().markRead();
 176						notify = false;
 177					}
 178				}
 179			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 180				mMessageParser.parseError(packet, account);
 181				return;
 182			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 183				if (packet.hasChild("displayed","urn:xmpp:chat-markers:0")) {
 184					String id = packet.findChild("displayed","urn:xmpp:chat-markers:0").getAttribute("id");
 185					String[] fromParts = packet.getFrom().split("/");
 186					markMessage(account,fromParts[0], id, Message.STATUS_SEND_DISPLAYED);
 187					Log.d(LOGTAG,"message was displayed by contact");
 188				} else if (packet.hasChild("received","urn:xmpp:chat-markers:0")) {
 189					String id = packet.findChild("received","urn:xmpp:chat-markers:0").getAttribute("id");
 190					String[] fromParts = packet.getFrom().split("/");
 191					markMessage(account,fromParts[0], id, Message.STATUS_SEND_RECEIVED);
 192				} else if (packet.hasChild("x")) {
 193					Element x = packet.findChild("x");
 194					if (x.hasChild("invite")) {
 195						findOrCreateConversation(account, packet.getFrom(),
 196								true);
 197						if (convChangedListener != null) {
 198							convChangedListener.onConversationListChanged();
 199						}
 200						Log.d(LOGTAG,
 201								"invitation received to " + packet.getFrom());
 202					}
 203
 204				} else {
 205					//Log.d(LOGTAG, "unparsed message " + packet.toString());
 206				}
 207			}
 208			if ((message == null) || (message.getBody() == null)) {
 209				return;
 210			}
 211			if (packet.hasChild("delay")) {
 212				try {
 213					String stamp = packet.findChild("delay").getAttribute(
 214							"stamp");
 215					stamp = stamp.replace("Z", "+0000");
 216					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 217							.parse(stamp);
 218					message.setTime(date.getTime());
 219				} catch (ParseException e) {
 220					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 221				}
 222			}
 223			if ((confirmMessages()) && ((packet.getId() != null))) {
 224				MessagePacket receivedPacket = new MessagePacket();
 225				receivedPacket.setType(MessagePacket.TYPE_NORMAL);
 226				receivedPacket.setTo(message.getCounterpart());
 227				receivedPacket.setFrom(account.getFullJid());
 228				if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
 229					Element received = receivedPacket.addChild("received",
 230							"urn:xmpp:chat-markers:0");
 231					received.setAttribute("id", packet.getId());
 232					account.getXmppConnection().sendMessagePacket(
 233							receivedPacket);
 234				} else if (packet.hasChild("request", "urn:xmpp:receipts")) {
 235					Element received = receivedPacket.addChild("received",
 236							"urn:xmpp:receipts");
 237					received.setAttribute("id", packet.getId());
 238					account.getXmppConnection().sendMessagePacket(
 239							receivedPacket);
 240				}
 241			}
 242			Conversation conversation = message.getConversation();
 243			conversation.getMessages().add(message);
 244			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 245				databaseBackend.createMessage(message);
 246			}
 247			if (convChangedListener != null) {
 248				convChangedListener.onConversationListChanged();
 249			} else {
 250				UIHelper.updateNotification(getApplicationContext(),
 251						getConversations(), message.getConversation(), notify);
 252			}
 253		}
 254	};
 255	private OnStatusChanged statusListener = new OnStatusChanged() {
 256
 257		@Override
 258		public void onStatusChanged(Account account) {
 259			if (accountChangedListener != null) {
 260				accountChangedListener.onAccountListChangedListener();
 261			}
 262			if (account.getStatus() == Account.STATUS_ONLINE) {
 263				List<Conversation> conversations = getConversations();
 264				for (int i = 0; i < conversations.size(); ++i) {
 265					if (conversations.get(i).getAccount() == account) {
 266						sendUnsendMessages(conversations.get(i));
 267					}
 268				}
 269				syncDirtyContacts(account);
 270				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 271			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 272				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 273					int timeToReconnect = mRandom.nextInt(50) + 10;
 274					scheduleWakeupCall(timeToReconnect, false);
 275				}
 276
 277			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 278				databaseBackend.updateAccount(account);
 279				reconnectAccount(account, true);
 280			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 281					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
 282				int next = account.getXmppConnection().getTimeToNextAttempt();
 283				Log.d(LOGTAG, account.getJid()
 284						+ ": error connecting account. try again in " + next
 285						+ "s for the "
 286						+ (account.getXmppConnection().getAttempt() + 1)
 287						+ " time");
 288				scheduleWakeupCall(next, false);
 289			}
 290			UIHelper.showErrorNotification(getApplicationContext(),
 291					getAccounts());
 292		}
 293	};
 294
 295	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 296
 297		@Override
 298		public void onPresencePacketReceived(final Account account,
 299				PresencePacket packet) {
 300			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 301				Conversation muc = findMuc(
 302						packet.getAttribute("from").split("/")[0], account);
 303				if (muc != null) {
 304					muc.getMucOptions().processPacket(packet, getPgpEngine());
 305				} else {
 306					Log.d(LOGTAG, account.getJid()
 307							+ ": could not find muc for received muc package "
 308							+ packet.toString());
 309				}
 310			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 311				Conversation muc = findMuc(
 312						packet.getAttribute("from").split("/")[0], account);
 313				if (muc != null) {
 314					Log.d(LOGTAG,
 315							account.getJid() + ": reading muc status packet "
 316									+ packet.toString());
 317					int error = muc.getMucOptions().getError();
 318					muc.getMucOptions().processPacket(packet, getPgpEngine());
 319					if ((muc.getMucOptions().getError() != error)
 320							&& (convChangedListener != null)) {
 321						Log.d(LOGTAG, "muc error status changed");
 322						convChangedListener.onConversationListChanged();
 323					}
 324				}
 325			} else {
 326				String[] fromParts = packet.getAttribute("from").split("/");
 327				String type = packet.getAttribute("type");
 328				if (fromParts[0].equals(account.getJid())) {
 329					if (fromParts.length == 2) {
 330						if (type == null) {
 331							account.updatePresence(fromParts[1], Presences
 332									.parseShow(packet.findChild("show")));
 333						} else if (type.equals("unavailable")) {
 334							account.removePresence(fromParts[1]);
 335						}
 336					}
 337
 338				} else {
 339					Contact contact = account.getRoster().getContact(
 340							packet.getFrom());
 341					if (type == null) {
 342						if (fromParts.length == 2) {
 343							contact.updatePresence(fromParts[1], Presences
 344									.parseShow(packet.findChild("show")));
 345							PgpEngine pgp = getPgpEngine();
 346							if (pgp != null) {
 347								Element x = packet.findChild("x",
 348										"jabber:x:signed");
 349								if (x != null) {
 350									Element status = packet.findChild("status");
 351									String msg;
 352									if (status != null) {
 353										msg = status.getContent();
 354									} else {
 355										msg = "";
 356									}
 357									contact.setPgpKeyId(pgp.fetchKeyId(account,
 358											msg, x.getContent()));
 359								}
 360							}
 361							onContactStatusChanged
 362									.onContactStatusChanged(contact);
 363						}
 364					} else if (type.equals("unavailable")) {
 365						if (fromParts.length != 2) {
 366							contact.clearPresences();
 367						} else {
 368							contact.removePresence(fromParts[1]);
 369						}
 370						onContactStatusChanged.onContactStatusChanged(contact);
 371					} else if (type.equals("subscribe")) {
 372						Log.d(LOGTAG, "received subscribe packet from "
 373								+ packet.getFrom());
 374						if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
 375							Log.d(LOGTAG, "preemptive grant; granting");
 376							sendPresenceUpdatesTo(contact);
 377							contact.setOption(Contact.Options.FROM);
 378							contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
 379							if ((contact.getOption(Contact.Options.ASKING))
 380									&& (!contact.getOption(Contact.Options.TO))) {
 381								requestPresenceUpdatesFrom(contact);
 382							}
 383						} else {
 384							contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
 385						}
 386					} else {
 387						// Log.d(LOGTAG, packet.toString());
 388					}
 389				}
 390			}
 391		}
 392	};
 393
 394	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 395
 396		@Override
 397		public void onIqPacketReceived(Account account, IqPacket packet) {
 398			if (packet.hasChild("query", "jabber:iq:roster")) {
 399				String from = packet.getFrom();
 400				if ((from == null) || (from.equals(account.getJid()))) {
 401					Element query = packet.findChild("query");
 402					processRosterItems(account, query);
 403				} else {
 404					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 405				}
 406			} else if (packet
 407					.hasChild("open", "http://jabber.org/protocol/ibb")
 408					|| packet
 409							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 410				XmppConnectionService.this.mJingleConnectionManager
 411						.deliverIbbPacket(account, packet);
 412			} else if (packet.hasChild("query",
 413					"http://jabber.org/protocol/disco#info")) {
 414				IqPacket iqResponse = packet
 415						.generateRespone(IqPacket.TYPE_RESULT);
 416				Element query = iqResponse.addChild("query",
 417						"http://jabber.org/protocol/disco#info");
 418				query.addChild("feature").setAttribute("var",
 419						"urn:xmpp:jingle:1");
 420				query.addChild("feature").setAttribute("var",
 421						"urn:xmpp:jingle:apps:file-transfer:3");
 422				query.addChild("feature").setAttribute("var",
 423						"urn:xmpp:jingle:transports:s5b:1");
 424				query.addChild("feature").setAttribute("var",
 425						"urn:xmpp:jingle:transports:ibb:1");
 426				if (confirmMessages()) {
 427					query.addChild("feature").setAttribute("var",
 428							"urn:xmpp:receipts");
 429				}
 430				account.getXmppConnection().sendIqPacket(iqResponse, null);
 431			} else {
 432				if ((packet.getType() == IqPacket.TYPE_GET)
 433						|| (packet.getType() == IqPacket.TYPE_SET)) {
 434					IqPacket response = packet
 435							.generateRespone(IqPacket.TYPE_ERROR);
 436					Element error = response.addChild("error");
 437					error.setAttribute("type", "cancel");
 438					error.addChild("feature-not-implemented",
 439							"urn:ietf:params:xml:ns:xmpp-stanzas");
 440					account.getXmppConnection().sendIqPacket(response, null);
 441				}
 442			}
 443		}
 444	};
 445
 446	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 447
 448		@Override
 449		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 450			mJingleConnectionManager.deliverPacket(account, packet);
 451		}
 452	};
 453
 454	private OpenPgpServiceConnection pgpServiceConnection;
 455	private PgpEngine mPgpEngine = null;
 456	private Intent pingIntent;
 457	private PendingIntent pendingPingIntent = null;
 458	private WakeLock wakeLock;
 459	private PowerManager pm;
 460
 461	public PgpEngine getPgpEngine() {
 462		if (pgpServiceConnection.isBound()) {
 463			if (this.mPgpEngine == null) {
 464				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 465						getApplicationContext(),
 466						pgpServiceConnection.getService()), this);
 467			}
 468			return mPgpEngine;
 469		} else {
 470			return null;
 471		}
 472
 473	}
 474
 475	public FileBackend getFileBackend() {
 476		return this.fileBackend;
 477	}
 478
 479	public Message attachImageToConversation(final Conversation conversation,
 480			final Uri uri, final UiCallback callback) {
 481		final Message message;
 482		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 483			message = new Message(conversation, "",
 484					Message.ENCRYPTION_DECRYPTED);
 485		} else {
 486			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 487		}
 488		message.setPresence(conversation.getNextPresence());
 489		message.setType(Message.TYPE_IMAGE);
 490		message.setStatus(Message.STATUS_OFFERED);
 491		new Thread(new Runnable() {
 492
 493			@Override
 494			public void run() {
 495				try {
 496					getFileBackend().copyImageToPrivateStorage(message, uri);
 497					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 498						getPgpEngine().encrypt(message, callback);
 499					} else {
 500						callback.success();
 501					}
 502				} catch (FileBackend.ImageCopyException e) {
 503					callback.error(e.getResId());
 504				}
 505			}
 506		}).start();
 507		return message;
 508	}
 509
 510	protected Conversation findMuc(String name, Account account) {
 511		for (Conversation conversation : this.conversations) {
 512			if (conversation.getContactJid().split("/")[0].equals(name)
 513					&& (conversation.getAccount() == account)) {
 514				return conversation;
 515			}
 516		}
 517		return null;
 518	}
 519
 520	private void processRosterItems(Account account, Element elements) {
 521		String version = elements.getAttribute("ver");
 522		if (version != null) {
 523			account.getRoster().setVersion(version);
 524		}
 525		for (Element item : elements.getChildren()) {
 526			if (item.getName().equals("item")) {
 527				String jid = item.getAttribute("jid");
 528				String name = item.getAttribute("name");
 529				String subscription = item.getAttribute("subscription");
 530				Contact contact = account.getRoster().getContact(jid);
 531				if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
 532					contact.setServerName(name);
 533				}
 534				if (subscription.equals("remove")) {
 535					contact.resetOption(Contact.Options.IN_ROSTER);
 536					contact.resetOption(Contact.Options.DIRTY_DELETE);
 537				} else {
 538					contact.setOption(Contact.Options.IN_ROSTER);
 539					contact.parseSubscriptionFromElement(item);
 540				}
 541			}
 542		}
 543	}
 544
 545	public class XmppConnectionBinder extends Binder {
 546		public XmppConnectionService getService() {
 547			return XmppConnectionService.this;
 548		}
 549	}
 550
 551	@Override
 552	public int onStartCommand(Intent intent, int flags, int startId) {
 553		if ((intent != null)
 554				&& (ACTION_MERGE_PHONE_CONTACTS.equals(intent.getAction()))) {
 555			mergePhoneContactsWithRoster();
 556			return START_STICKY;
 557		} else if ((intent != null)
 558				&& (Intent.ACTION_SHUTDOWN.equals(intent.getAction()))) {
 559			logoutAndSave();
 560			return START_NOT_STICKY;
 561		}
 562		this.wakeLock.acquire();
 563		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 564				.getSystemService(Context.CONNECTIVITY_SERVICE);
 565		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 566		boolean isConnected = activeNetwork != null
 567				&& activeNetwork.isConnected();
 568
 569		for (Account account : accounts) {
 570			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 571				if (!isConnected) {
 572					account.setStatus(Account.STATUS_NO_INTERNET);
 573					if (statusListener != null) {
 574						statusListener.onStatusChanged(account);
 575					}
 576				} else {
 577					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 578						account.setStatus(Account.STATUS_OFFLINE);
 579						if (statusListener != null) {
 580							statusListener.onStatusChanged(account);
 581						}
 582					}
 583					if (account.getStatus() == Account.STATUS_ONLINE) {
 584						long lastReceived = account.getXmppConnection().lastPaketReceived;
 585						long lastSent = account.getXmppConnection().lastPingSent;
 586						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 587							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 588							this.reconnectAccount(account, true);
 589						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 590							account.getXmppConnection().sendPing();
 591							account.getXmppConnection().lastPingSent = SystemClock
 592									.elapsedRealtime();
 593							this.scheduleWakeupCall(2, false);
 594						}
 595					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 596						if (account.getXmppConnection() == null) {
 597							account.setXmppConnection(this
 598									.createConnection(account));
 599						}
 600						account.getXmppConnection().lastPingSent = SystemClock
 601								.elapsedRealtime();
 602						new Thread(account.getXmppConnection()).start();
 603					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 604							&& ((SystemClock.elapsedRealtime() - account
 605									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 606						Log.d(LOGTAG, account.getJid()
 607								+ ": time out during connect reconnecting");
 608						reconnectAccount(account, true);
 609					} else {
 610						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 611							reconnectAccount(account, true);
 612						}
 613					}
 614					// in any case. reschedule wakup call
 615					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 616				}
 617				if (accountChangedListener != null) {
 618					accountChangedListener.onAccountListChangedListener();
 619				}
 620			}
 621		}
 622		if (wakeLock.isHeld()) {
 623			wakeLock.release();
 624		}
 625		return START_STICKY;
 626	}
 627
 628	@Override
 629	public void onCreate() {
 630		ExceptionHelper.init(getApplicationContext());
 631		this.databaseBackend = DatabaseBackend
 632				.getInstance(getApplicationContext());
 633		this.fileBackend = new FileBackend(getApplicationContext());
 634		this.accounts = databaseBackend.getAccounts();
 635
 636		for (Account account : this.accounts) {
 637			this.databaseBackend.readRoster(account.getRoster());
 638		}
 639		this.mergePhoneContactsWithRoster();
 640		this.getConversations();
 641
 642		getContentResolver().registerContentObserver(
 643				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 644		this.pgpServiceConnection = new OpenPgpServiceConnection(
 645				getApplicationContext(), "org.sufficientlysecure.keychain");
 646		this.pgpServiceConnection.bindToService();
 647
 648		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 649		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 650				"XmppConnectionService");
 651	}
 652
 653	@Override
 654	public void onDestroy() {
 655		super.onDestroy();
 656		this.logoutAndSave();
 657	}
 658
 659	@Override
 660	public void onTaskRemoved(Intent rootIntent) {
 661		super.onTaskRemoved(rootIntent);
 662		this.logoutAndSave();
 663	}
 664
 665	private void logoutAndSave() {
 666		for (Account account : accounts) {
 667			databaseBackend.writeRoster(account.getRoster());
 668			if (account.getXmppConnection() != null) {
 669				disconnect(account, false);
 670			}
 671		}
 672		Context context = getApplicationContext();
 673		AlarmManager alarmManager = (AlarmManager) context
 674				.getSystemService(Context.ALARM_SERVICE);
 675		Intent intent = new Intent(context, EventReceiver.class);
 676		alarmManager.cancel(PendingIntent.getBroadcast(context, 0, intent, 0));
 677		Log.d(LOGTAG, "good bye");
 678		stopSelf();
 679	}
 680
 681	protected void scheduleWakeupCall(int seconds, boolean ping) {
 682		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 683		Context context = getApplicationContext();
 684		AlarmManager alarmManager = (AlarmManager) context
 685				.getSystemService(Context.ALARM_SERVICE);
 686
 687		if (ping) {
 688			if (this.pingIntent == null) {
 689				this.pingIntent = new Intent(context, EventReceiver.class);
 690				this.pingIntent.setAction("ping");
 691				this.pingIntent.putExtra("time", timeToWake);
 692				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 693						this.pingIntent, 0);
 694				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 695						timeToWake, pendingPingIntent);
 696			} else {
 697				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 698				if (scheduledTime < SystemClock.elapsedRealtime()
 699						|| (scheduledTime > timeToWake)) {
 700					this.pingIntent.putExtra("time", timeToWake);
 701					alarmManager.cancel(this.pendingPingIntent);
 702					this.pendingPingIntent = PendingIntent.getBroadcast(
 703							context, 0, this.pingIntent, 0);
 704					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 705							timeToWake, pendingPingIntent);
 706				}
 707			}
 708		} else {
 709			Intent intent = new Intent(context, EventReceiver.class);
 710			intent.setAction("ping_check");
 711			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 712					intent, 0);
 713			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 714					alarmIntent);
 715		}
 716
 717	}
 718
 719	public XmppConnection createConnection(Account account) {
 720		SharedPreferences sharedPref = getPreferences();
 721		account.setResource(sharedPref.getString("resource", "mobile")
 722				.toLowerCase(Locale.getDefault()));
 723		XmppConnection connection = new XmppConnection(account, this.pm);
 724		connection.setOnMessagePacketReceivedListener(this.messageListener);
 725		connection.setOnStatusChangedListener(this.statusListener);
 726		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 727		connection
 728				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 729		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 730		connection
 731				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 732
 733					@Override
 734					public void onTLSExceptionReceived(String fingerprint,
 735							Account account) {
 736						Log.d(LOGTAG, "tls exception arrived in service");
 737						if (tlsException != null) {
 738							tlsException.onTLSExceptionReceived(fingerprint,
 739									account);
 740						}
 741					}
 742				});
 743		connection.setOnBindListener(new OnBindListener() {
 744
 745			@Override
 746			public void onBind(final Account account) {
 747				account.getRoster().clearPresences();
 748				account.clearPresences(); // self presences
 749				fetchRosterFromServer(account);
 750				sendPresence(account);
 751				connectMultiModeConversations(account);
 752				if (convChangedListener != null) {
 753					convChangedListener.onConversationListChanged();
 754				}
 755			}
 756		});
 757		return connection;
 758	}
 759
 760	synchronized public void sendMessage(Message message, String presence) {
 761		Account account = message.getConversation().getAccount();
 762		Conversation conv = message.getConversation();
 763		MessagePacket packet = null;
 764		boolean saveInDb = false;
 765		boolean addToConversation = false;
 766		boolean send = false;
 767		if (account.getStatus() == Account.STATUS_ONLINE) {
 768			if (message.getType() == Message.TYPE_IMAGE) {
 769				mJingleConnectionManager.createNewConnection(message);
 770			} else {
 771				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 772					if (!conv.hasValidOtrSession()) {
 773						// starting otr session. messages will be send later
 774						conv.startOtrSession(getApplicationContext(), presence,
 775								true);
 776					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 777						// otr session aleary exists, creating message packet
 778						// accordingly
 779						packet = prepareMessagePacket(account, message,
 780								conv.getOtrSession());
 781						send = true;
 782						message.setStatus(Message.STATUS_SEND);
 783					}
 784					saveInDb = true;
 785					addToConversation = true;
 786				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 787					message.getConversation().endOtrIfNeeded();
 788					packet = prepareMessagePacket(account, message, null);
 789					packet.setBody("This is an XEP-0027 encryted message");
 790					packet.addChild("x", "jabber:x:encrypted").setContent(
 791							message.getEncryptedBody());
 792					message.setStatus(Message.STATUS_SEND);
 793					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 794					saveInDb = true;
 795					addToConversation = true;
 796					send = true;
 797				} else {
 798					message.getConversation().endOtrIfNeeded();
 799					// don't encrypt
 800					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 801						message.setStatus(Message.STATUS_SEND);
 802					}
 803					packet = prepareMessagePacket(account, message, null);
 804					send = true;
 805					saveInDb = true;
 806					addToConversation = true;
 807				}
 808			}
 809		} else {
 810			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 811				String pgpBody = message.getEncryptedBody();
 812				String decryptedBody = message.getBody();
 813				message.setBody(pgpBody);
 814				databaseBackend.createMessage(message);
 815				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 816				message.setBody(decryptedBody);
 817				addToConversation = true;
 818			} else {
 819				saveInDb = true;
 820				addToConversation = true;
 821			}
 822
 823		}
 824		if (saveInDb) {
 825			databaseBackend.createMessage(message);
 826		}
 827		if (addToConversation) {
 828			conv.getMessages().add(message);
 829			if (convChangedListener != null) {
 830				convChangedListener.onConversationListChanged();
 831			}
 832		}
 833		if ((send) && (packet != null)) {
 834			account.getXmppConnection().sendMessagePacket(packet);
 835		}
 836
 837	}
 838
 839	private void sendUnsendMessages(Conversation conversation) {
 840		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 841			if (conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND) {
 842				resendMessage(conversation.getMessages().get(i));
 843			}
 844		}
 845	}
 846
 847	private void resendMessage(Message message) {
 848		Account account = message.getConversation().getAccount();
 849		MessagePacket packet = null;
 850		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 851			packet = prepareMessagePacket(account, message, null);
 852		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 853			packet = prepareMessagePacket(account, message, null);
 854			packet.setBody("This is an XEP-0027 encryted message");
 855			if (message.getEncryptedBody() == null) {
 856				markMessage(message, Message.STATUS_SEND_FAILED);
 857				return;
 858			}
 859			packet.addChild("x", "jabber:x:encrypted").setContent(
 860					message.getEncryptedBody());
 861		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 862			packet = prepareMessagePacket(account, message, null);
 863			packet.setBody("This is an XEP-0027 encryted message");
 864			packet.addChild("x", "jabber:x:encrypted").setContent(
 865					message.getBody());
 866		}
 867		if (packet != null) {
 868			account.getXmppConnection().sendMessagePacket(packet);
 869			markMessage(message, Message.STATUS_SEND);
 870		}
 871	}
 872
 873	public MessagePacket prepareMessagePacket(Account account, Message message,
 874			Session otrSession) {
 875		MessagePacket packet = new MessagePacket();
 876		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 877			packet.setType(MessagePacket.TYPE_CHAT);
 878			if (otrSession != null) {
 879				try {
 880					packet.setBody(otrSession.transformSending(message
 881							.getBody()));
 882				} catch (OtrException e) {
 883					Log.d(LOGTAG,
 884							account.getJid()
 885									+ ": could not encrypt message to "
 886									+ message.getCounterpart());
 887				}
 888				packet.addChild("private", "urn:xmpp:carbons:2");
 889				packet.addChild("no-copy", "urn:xmpp:hints");
 890				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 891						+ otrSession.getSessionID().getUserID());
 892				packet.setFrom(account.getFullJid());
 893			} else {
 894				packet.setBody(message.getBody());
 895				packet.setTo(message.getCounterpart());
 896				packet.setFrom(account.getJid());
 897			}
 898			packet.addChild("markable", "urn:xmpp:chat-markers:0");
 899		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 900			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 901			packet.setBody(message.getBody());
 902			packet.setTo(message.getCounterpart().split("/")[0]);
 903			packet.setFrom(account.getJid());
 904		}
 905		packet.setId(message.getUuid());
 906		return packet;
 907	}
 908
 909	public void fetchRosterFromServer(Account account) {
 910		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 911		if (!"".equals(account.getRosterVersion())) {
 912			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 913					+ account.getRosterVersion());
 914		} else {
 915			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 916		}
 917		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 918				account.getRosterVersion());
 919		account.getXmppConnection().sendIqPacket(iqPacket,
 920				new OnIqPacketReceived() {
 921
 922					@Override
 923					public void onIqPacketReceived(final Account account,
 924							IqPacket packet) {
 925						Element roster = packet.findChild("query");
 926						if (roster != null) {
 927							account.getRoster().markAllAsNotInRoster();
 928							processRosterItems(account, roster);
 929						}
 930					}
 931				});
 932	}
 933
 934	private void mergePhoneContactsWithRoster() {
 935		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 936				new OnPhoneContactsLoadedListener() {
 937					@Override
 938					public void onPhoneContactsLoaded(List<Bundle> phoneContacts) {
 939						for (Account account : accounts) {
 940							account.getRoster().clearSystemAccounts();
 941						}
 942						for (Bundle phoneContact : phoneContacts) {
 943							for (Account account : accounts) {
 944								String jid = phoneContact.getString("jid");
 945								Contact contact = account.getRoster()
 946										.getContact(jid);
 947								String systemAccount = phoneContact
 948										.getInt("phoneid")
 949										+ "#"
 950										+ phoneContact.getString("lookup");
 951								contact.setSystemAccount(systemAccount);
 952								contact.setPhotoUri(phoneContact
 953										.getString("photouri"));
 954								contact.setSystemName(phoneContact
 955										.getString("displayname"));
 956							}
 957						}
 958					}
 959				});
 960	}
 961
 962	public List<Conversation> getConversations() {
 963		if (this.conversations == null) {
 964			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
 965			for (Account account : this.accounts) {
 966				accountLookupTable.put(account.getUuid(), account);
 967			}
 968			this.conversations = databaseBackend
 969					.getConversations(Conversation.STATUS_AVAILABLE);
 970			for (Conversation conv : this.conversations) {
 971				Account account = accountLookupTable.get(conv.getAccountUuid());
 972				conv.setAccount(account);
 973				conv.setMessages(databaseBackend.getMessages(conv, 50));
 974			}
 975		}
 976		Collections.sort(this.conversations, new Comparator<Conversation>() {
 977			@Override
 978			public int compare(Conversation lhs, Conversation rhs) {
 979				Message left = lhs.getLatestMessage();
 980				Message right = rhs.getLatestMessage();
 981				if (left.getTimeSent() > right.getTimeSent()) {
 982					return -1;
 983				} else if (left.getTimeSent() < right.getTimeSent()) {
 984					return 1;
 985				} else {
 986					return 0;
 987				}
 988			}
 989		});
 990		return this.conversations;
 991	}
 992
 993	public List<Account> getAccounts() {
 994		return this.accounts;
 995	}
 996
 997	public Conversation findActiveConversation(Contact contact) {
 998		for (Conversation conversation : this.getConversations()) {
 999			if (conversation.getContact() == contact) {
1000				return conversation;
1001			}
1002		}
1003		return null;
1004	}
1005
1006	public Conversation findOrCreateConversation(Account account, String jid,
1007			boolean muc) {
1008		for (Conversation conv : this.getConversations()) {
1009			if ((conv.getAccount().equals(account))
1010					&& (conv.getContactJid().split("/")[0].equals(jid))) {
1011				return conv;
1012			}
1013		}
1014		Conversation conversation = databaseBackend.findConversation(account,
1015				jid);
1016		if (conversation != null) {
1017			conversation.setStatus(Conversation.STATUS_AVAILABLE);
1018			conversation.setAccount(account);
1019			if (muc) {
1020				conversation.setMode(Conversation.MODE_MULTI);
1021			} else {
1022				conversation.setMode(Conversation.MODE_SINGLE);
1023			}
1024			conversation.setMessages(databaseBackend.getMessages(conversation,
1025					50));
1026			this.databaseBackend.updateConversation(conversation);
1027		} else {
1028			String conversationName;
1029			Contact contact = account.getRoster().getContact(jid);
1030			if (contact != null) {
1031				conversationName = contact.getDisplayName();
1032			} else {
1033				conversationName = jid.split("@")[0];
1034			}
1035			if (muc) {
1036				conversation = new Conversation(conversationName, account, jid,
1037						Conversation.MODE_MULTI);
1038			} else {
1039				conversation = new Conversation(conversationName, account, jid,
1040						Conversation.MODE_SINGLE);
1041			}
1042			this.databaseBackend.createConversation(conversation);
1043		}
1044		this.conversations.add(conversation);
1045		if ((account.getStatus() == Account.STATUS_ONLINE)
1046				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
1047			joinMuc(conversation);
1048		}
1049		if (this.convChangedListener != null) {
1050			this.convChangedListener.onConversationListChanged();
1051		}
1052		return conversation;
1053	}
1054
1055	public void archiveConversation(Conversation conversation) {
1056		if (conversation.getMode() == Conversation.MODE_MULTI) {
1057			leaveMuc(conversation);
1058		} else {
1059			conversation.endOtrIfNeeded();
1060		}
1061		this.databaseBackend.updateConversation(conversation);
1062		this.conversations.remove(conversation);
1063		if (this.convChangedListener != null) {
1064			this.convChangedListener.onConversationListChanged();
1065		}
1066	}
1067
1068	public void clearConversationHistory(Conversation conversation) {
1069		this.databaseBackend.deleteMessagesInConversation(conversation);
1070		this.fileBackend.removeFiles(conversation);
1071		conversation.getMessages().clear();
1072		if (this.convChangedListener != null) {
1073			this.convChangedListener.onConversationListChanged();
1074		}
1075	}
1076
1077	public int getConversationCount() {
1078		return this.databaseBackend.getConversationCount();
1079	}
1080
1081	public void createAccount(Account account) {
1082		databaseBackend.createAccount(account);
1083		this.accounts.add(account);
1084		this.reconnectAccount(account, false);
1085		if (accountChangedListener != null)
1086			accountChangedListener.onAccountListChangedListener();
1087	}
1088
1089	public void updateAccount(Account account) {
1090		this.statusListener.onStatusChanged(account);
1091		databaseBackend.updateAccount(account);
1092		reconnectAccount(account, false);
1093		if (accountChangedListener != null) {
1094			accountChangedListener.onAccountListChangedListener();
1095		}
1096		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1097	}
1098
1099	public void deleteAccount(Account account) {
1100		if (account.getXmppConnection() != null) {
1101			this.disconnect(account, true);
1102		}
1103		databaseBackend.deleteAccount(account);
1104		this.accounts.remove(account);
1105		if (accountChangedListener != null) {
1106			accountChangedListener.onAccountListChangedListener();
1107		}
1108		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1109	}
1110
1111	public void setOnConversationListChangedListener(
1112			OnConversationListChangedListener listener) {
1113		this.convChangedListener = listener;
1114		this.convChangedListenerCount++;
1115	}
1116
1117	public void removeOnConversationListChangedListener() {
1118		this.convChangedListenerCount--;
1119		if (this.convChangedListenerCount == 0) {
1120			this.convChangedListener = null;
1121		}
1122	}
1123
1124	public void setOnAccountListChangedListener(
1125			OnAccountListChangedListener listener) {
1126		this.accountChangedListener = listener;
1127	}
1128
1129	public void removeOnAccountListChangedListener() {
1130		this.accountChangedListener = null;
1131	}
1132
1133	public void connectMultiModeConversations(Account account) {
1134		List<Conversation> conversations = getConversations();
1135		for (int i = 0; i < conversations.size(); i++) {
1136			Conversation conversation = conversations.get(i);
1137			if ((conversation.getMode() == Conversation.MODE_MULTI)
1138					&& (conversation.getAccount() == account)) {
1139				joinMuc(conversation);
1140			}
1141		}
1142	}
1143
1144	public void joinMuc(Conversation conversation) {
1145		Account account = conversation.getAccount();
1146		String[] mucParts = conversation.getContactJid().split("/");
1147		String muc;
1148		String nick;
1149		if (mucParts.length == 2) {
1150			muc = mucParts[0];
1151			nick = mucParts[1];
1152		} else {
1153			muc = mucParts[0];
1154			nick = account.getUsername();
1155		}
1156		PresencePacket packet = new PresencePacket();
1157		packet.setAttribute("to", muc + "/" + nick);
1158		Element x = new Element("x");
1159		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1160		String sig = account.getPgpSignature();
1161		if (sig != null) {
1162			packet.addChild("status").setContent("online");
1163			packet.addChild("x", "jabber:x:signed").setContent(sig);
1164		}
1165		if (conversation.getMessages().size() != 0) {
1166			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1167			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1168			x.addChild("history").setAttribute("seconds", diff + "");
1169		}
1170		packet.addChild(x);
1171		account.getXmppConnection().sendPresencePacket(packet);
1172	}
1173
1174	private OnRenameListener renameListener = null;
1175
1176	public void setOnRenameListener(OnRenameListener listener) {
1177		this.renameListener = listener;
1178	}
1179
1180	public void renameInMuc(final Conversation conversation, final String nick) {
1181		final MucOptions options = conversation.getMucOptions();
1182		if (options.online()) {
1183			Account account = conversation.getAccount();
1184			options.setOnRenameListener(new OnRenameListener() {
1185
1186				@Override
1187				public void onRename(boolean success) {
1188					if (renameListener != null) {
1189						renameListener.onRename(success);
1190					}
1191					if (success) {
1192						String jid = conversation.getContactJid().split("/")[0]
1193								+ "/" + nick;
1194						conversation.setContactJid(jid);
1195						databaseBackend.updateConversation(conversation);
1196					}
1197				}
1198			});
1199			options.flagAboutToRename();
1200			PresencePacket packet = new PresencePacket();
1201			packet.setAttribute("to",
1202					conversation.getContactJid().split("/")[0] + "/" + nick);
1203			packet.setAttribute("from", conversation.getAccount().getFullJid());
1204
1205			String sig = account.getPgpSignature();
1206			if (sig != null) {
1207				packet.addChild("status").setContent("online");
1208				packet.addChild("x", "jabber:x:signed").setContent(sig);
1209			}
1210
1211			account.getXmppConnection().sendPresencePacket(packet, null);
1212		} else {
1213			String jid = conversation.getContactJid().split("/")[0] + "/"
1214					+ nick;
1215			conversation.setContactJid(jid);
1216			databaseBackend.updateConversation(conversation);
1217			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1218				joinMuc(conversation);
1219			}
1220		}
1221	}
1222
1223	public void leaveMuc(Conversation conversation) {
1224		PresencePacket packet = new PresencePacket();
1225		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1226				+ "/" + conversation.getMucOptions().getNick());
1227		packet.setAttribute("from", conversation.getAccount().getFullJid());
1228		packet.setAttribute("type", "unavailable");
1229		Log.d(LOGTAG, "send leaving muc " + packet);
1230		conversation.getAccount().getXmppConnection()
1231				.sendPresencePacket(packet);
1232		conversation.getMucOptions().setOffline();
1233	}
1234
1235	public void disconnect(Account account, boolean force) {
1236		if ((account.getStatus() == Account.STATUS_ONLINE)
1237				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1238			if (!force) {
1239				List<Conversation> conversations = getConversations();
1240				for (int i = 0; i < conversations.size(); i++) {
1241					Conversation conversation = conversations.get(i);
1242					if (conversation.getAccount() == account) {
1243						if (conversation.getMode() == Conversation.MODE_MULTI) {
1244							leaveMuc(conversation);
1245						} else {
1246							conversation.endOtrIfNeeded();
1247						}
1248					}
1249				}
1250			}
1251			account.getXmppConnection().disconnect(force);
1252		}
1253	}
1254
1255	@Override
1256	public IBinder onBind(Intent intent) {
1257		return mBinder;
1258	}
1259
1260	public void updateMessage(Message message) {
1261		databaseBackend.updateMessage(message);
1262	}
1263
1264	protected void syncDirtyContacts(Account account) {
1265		for (Contact contact : account.getRoster().getContacts()) {
1266			if (contact.getOption(Contact.Options.DIRTY_PUSH)) {
1267				pushContactToServer(contact);
1268			}
1269			if (contact.getOption(Contact.Options.DIRTY_DELETE)) {
1270				Log.d(LOGTAG, "dirty delete");
1271				deleteContactOnServer(contact);
1272			}
1273		}
1274	}
1275
1276	public void createContact(Contact contact) {
1277		SharedPreferences sharedPref = getPreferences();
1278		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1279		if (autoGrant) {
1280			contact.setOption(Contact.Options.PREEMPTIVE_GRANT);
1281			contact.setOption(Contact.Options.ASKING);
1282		}
1283		pushContactToServer(contact);
1284	}
1285
1286	public void pushContactToServer(Contact contact) {
1287		contact.resetOption(Contact.Options.DIRTY_DELETE);
1288		Account account = contact.getAccount();
1289		if (account.getStatus() == Account.STATUS_ONLINE) {
1290			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1291			iq.query("jabber:iq:roster").addChild(contact.asElement());
1292			account.getXmppConnection().sendIqPacket(iq, null);
1293			if (contact.getOption(Contact.Options.ASKING)) {
1294				requestPresenceUpdatesFrom(contact);
1295			}
1296			if (contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1297				Log.d("xmppService", "contact had pending subscription");
1298				sendPresenceUpdatesTo(contact);
1299			}
1300			contact.resetOption(Contact.Options.DIRTY_PUSH);
1301		} else {
1302			contact.setOption(Contact.Options.DIRTY_PUSH);
1303		}
1304	}
1305
1306	public void deleteContactOnServer(Contact contact) {
1307		contact.resetOption(Contact.Options.DIRTY_PUSH);
1308		Account account = contact.getAccount();
1309		if (account.getStatus() == Account.STATUS_ONLINE) {
1310			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1311			Element item = iq.query("jabber:iq:roster").addChild("item");
1312			item.setAttribute("jid", contact.getJid());
1313			item.setAttribute("subscription", "remove");
1314			account.getXmppConnection().sendIqPacket(iq, null);
1315			contact.resetOption(Contact.Options.DIRTY_DELETE);
1316		} else {
1317			contact.setOption(Contact.Options.DIRTY_DELETE);
1318		}
1319	}
1320
1321	public void requestPresenceUpdatesFrom(Contact contact) {
1322		PresencePacket packet = new PresencePacket();
1323		packet.setAttribute("type", "subscribe");
1324		packet.setAttribute("to", contact.getJid());
1325		packet.setAttribute("from", contact.getAccount().getJid());
1326		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1327	}
1328
1329	public void stopPresenceUpdatesFrom(Contact contact) {
1330		PresencePacket packet = new PresencePacket();
1331		packet.setAttribute("type", "unsubscribe");
1332		packet.setAttribute("to", contact.getJid());
1333		packet.setAttribute("from", contact.getAccount().getJid());
1334		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1335	}
1336
1337	public void stopPresenceUpdatesTo(Contact contact) {
1338		PresencePacket packet = new PresencePacket();
1339		packet.setAttribute("type", "unsubscribed");
1340		packet.setAttribute("to", contact.getJid());
1341		packet.setAttribute("from", contact.getAccount().getJid());
1342		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1343	}
1344
1345	public void sendPresenceUpdatesTo(Contact contact) {
1346		PresencePacket packet = new PresencePacket();
1347		packet.setAttribute("type", "subscribed");
1348		packet.setAttribute("to", contact.getJid());
1349		packet.setAttribute("from", contact.getAccount().getJid());
1350		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1351	}
1352
1353	public void sendPresence(Account account) {
1354		PresencePacket packet = new PresencePacket();
1355		packet.setAttribute("from", account.getFullJid());
1356		String sig = account.getPgpSignature();
1357		if (sig != null) {
1358			packet.addChild("status").setContent("online");
1359			packet.addChild("x", "jabber:x:signed").setContent(sig);
1360		}
1361		account.getXmppConnection().sendPresencePacket(packet);
1362	}
1363
1364	public void updateConversation(Conversation conversation) {
1365		this.databaseBackend.updateConversation(conversation);
1366	}
1367
1368	public void removeOnTLSExceptionReceivedListener() {
1369		this.tlsException = null;
1370	}
1371
1372	public void reconnectAccount(final Account account, final boolean force) {
1373		new Thread(new Runnable() {
1374
1375			@Override
1376			public void run() {
1377				if (account.getXmppConnection() != null) {
1378					disconnect(account, force);
1379				}
1380				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1381					if (account.getXmppConnection() == null) {
1382						account.setXmppConnection(createConnection(account));
1383					}
1384					Thread thread = new Thread(account.getXmppConnection());
1385					thread.start();
1386					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1387				}
1388			}
1389		}).start();
1390	}
1391
1392	public void sendConversationSubject(Conversation conversation,
1393			String subject) {
1394		MessagePacket packet = new MessagePacket();
1395		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1396		packet.setTo(conversation.getContactJid().split("/")[0]);
1397		Element subjectChild = new Element("subject");
1398		subjectChild.setContent(subject);
1399		packet.addChild(subjectChild);
1400		packet.setFrom(conversation.getAccount().getJid());
1401		Account account = conversation.getAccount();
1402		if (account.getStatus() == Account.STATUS_ONLINE) {
1403			account.getXmppConnection().sendMessagePacket(packet);
1404		}
1405	}
1406
1407	public void inviteToConference(Conversation conversation,
1408			List<Contact> contacts) {
1409		for (Contact contact : contacts) {
1410			MessagePacket packet = new MessagePacket();
1411			packet.setTo(conversation.getContactJid().split("/")[0]);
1412			packet.setFrom(conversation.getAccount().getFullJid());
1413			Element x = new Element("x");
1414			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1415			Element invite = new Element("invite");
1416			invite.setAttribute("to", contact.getJid());
1417			x.addChild(invite);
1418			packet.addChild(x);
1419			Log.d(LOGTAG, packet.toString());
1420			conversation.getAccount().getXmppConnection()
1421					.sendMessagePacket(packet);
1422		}
1423
1424	}
1425
1426	public boolean markMessage(Account account, String recipient, String uuid,
1427			int status) {
1428		for (Conversation conversation : getConversations()) {
1429			if (conversation.getContactJid().equals(recipient)
1430					&& conversation.getAccount().equals(account)) {
1431				return markMessage(conversation, uuid, status);
1432			}
1433		}
1434		return false;
1435	}
1436
1437	public boolean markMessage(Conversation conversation, String uuid,
1438			int status) {
1439		for (Message message : conversation.getMessages()) {
1440			if (message.getUuid().equals(uuid)) {
1441				markMessage(message, status);
1442				return true;
1443			}
1444		}
1445		return false;
1446	}
1447
1448	public void markMessage(Message message, int status) {
1449		message.setStatus(status);
1450		databaseBackend.updateMessage(message);
1451		if (convChangedListener != null) {
1452			convChangedListener.onConversationListChanged();
1453		}
1454	}
1455
1456	public SharedPreferences getPreferences() {
1457		return PreferenceManager
1458				.getDefaultSharedPreferences(getApplicationContext());
1459	}
1460
1461	public boolean confirmMessages() {
1462		return getPreferences().getBoolean("confirm_messages", true);
1463	}
1464
1465	public void updateUi(Conversation conversation, boolean notify) {
1466		if (convChangedListener != null) {
1467			convChangedListener.onConversationListChanged();
1468		} else {
1469			UIHelper.updateNotification(getApplicationContext(),
1470					getConversations(), conversation, notify);
1471		}
1472	}
1473
1474	public Account findAccountByJid(String accountJid) {
1475		for (Account account : this.accounts) {
1476			if (account.getJid().equals(accountJid)) {
1477				return account;
1478			}
1479		}
1480		return null;
1481	}
1482
1483	public void markRead(Conversation conversation) {
1484		conversation.markRead(this);
1485	}
1486
1487	public void sendConfirmMessage(Account account, String to, String id) {
1488		MessagePacket receivedPacket = new MessagePacket();
1489		receivedPacket.setType(MessagePacket.TYPE_NORMAL);
1490		receivedPacket.setTo(to);
1491		receivedPacket.setFrom(account.getFullJid());
1492		Element received = receivedPacket.addChild("displayed",
1493				"urn:xmpp:chat-markers:0");
1494		received.setAttribute("id", id);
1495		account.getXmppConnection().sendMessagePacket(receivedPacket);
1496	}
1497}