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.OpenPgpError;
  14import org.openintents.openpgp.util.OpenPgpApi;
  15import org.openintents.openpgp.util.OpenPgpServiceConnection;
  16
  17import net.java.otr4j.OtrException;
  18import net.java.otr4j.session.Session;
  19import net.java.otr4j.session.SessionStatus;
  20import eu.siacs.conversations.R;
  21import eu.siacs.conversations.crypto.PgpEngine;
  22import eu.siacs.conversations.entities.Account;
  23import eu.siacs.conversations.entities.Contact;
  24import eu.siacs.conversations.entities.Conversation;
  25import eu.siacs.conversations.entities.Message;
  26import eu.siacs.conversations.entities.MucOptions;
  27import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  28import eu.siacs.conversations.entities.Presences;
  29import eu.siacs.conversations.parser.MessageParser;
  30import eu.siacs.conversations.persistance.DatabaseBackend;
  31import eu.siacs.conversations.persistance.FileBackend;
  32import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  33import eu.siacs.conversations.ui.OnAccountListChangedListener;
  34import eu.siacs.conversations.ui.OnConversationListChangedListener;
  35import eu.siacs.conversations.ui.OnRosterFetchedListener;
  36import eu.siacs.conversations.ui.UiCallback;
  37import eu.siacs.conversations.utils.ExceptionHelper;
  38import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  39import eu.siacs.conversations.utils.PhoneHelper;
  40import eu.siacs.conversations.utils.UIHelper;
  41import eu.siacs.conversations.xml.Element;
  42import eu.siacs.conversations.xmpp.OnBindListener;
  43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  44import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  45import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  46import eu.siacs.conversations.xmpp.OnStatusChanged;
  47import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  48import eu.siacs.conversations.xmpp.XmppConnection;
  49import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  50import eu.siacs.conversations.xmpp.jingle.JingleFile;
  51import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  52import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  53import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  54import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  55import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  56import android.app.AlarmManager;
  57import android.app.PendingIntent;
  58import android.app.Service;
  59import android.content.Context;
  60import android.content.Intent;
  61import android.content.SharedPreferences;
  62import android.database.ContentObserver;
  63import android.database.DatabaseUtils;
  64import android.net.ConnectivityManager;
  65import android.net.NetworkInfo;
  66import android.net.Uri;
  67import android.os.Binder;
  68import android.os.Bundle;
  69import android.os.IBinder;
  70import android.os.PowerManager;
  71import android.os.PowerManager.WakeLock;
  72import android.os.SystemClock;
  73import android.preference.PreferenceManager;
  74import android.provider.ContactsContract;
  75import android.util.Log;
  76
  77public class XmppConnectionService extends Service {
  78
  79	protected static final String LOGTAG = "xmppService";
  80	public DatabaseBackend databaseBackend;
  81	private FileBackend fileBackend;
  82
  83	public long startDate;
  84
  85	private static final int PING_MAX_INTERVAL = 300;
  86	private static final int PING_MIN_INTERVAL = 10;
  87	private static final int PING_TIMEOUT = 5;
  88	private static final int CONNECT_TIMEOUT = 60;
  89	private static final long CARBON_GRACE_PERIOD = 60000L;
  90
  91	private MessageParser mMessageParser = new MessageParser(this);
  92
  93	private List<Account> accounts;
  94	private List<Conversation> conversations = null;
  95	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
  96			this);
  97
  98	private OnConversationListChangedListener convChangedListener = null;
  99	private int convChangedListenerCount = 0;
 100	private OnAccountListChangedListener accountChangedListener = null;
 101	private OnTLSExceptionReceived tlsException = null;
 102
 103	public void setOnTLSExceptionReceivedListener(
 104			OnTLSExceptionReceived listener) {
 105		tlsException = listener;
 106	}
 107
 108	private Random mRandom = new Random(System.currentTimeMillis());
 109
 110	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 111
 112	private ContentObserver contactObserver = new ContentObserver(null) {
 113		@Override
 114		public void onChange(boolean selfChange) {
 115			super.onChange(selfChange);
 116			Log.d(LOGTAG, "contact list has changed");
 117			mergePhoneContactsWithRoster(null);
 118		}
 119	};
 120
 121	private final IBinder mBinder = new XmppConnectionBinder();
 122	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 123
 124		@Override
 125		public void onMessagePacketReceived(Account account,
 126				MessagePacket packet) {
 127			Message message = null;
 128			boolean notify = true;
 129			if (getPreferences().getBoolean(
 130					"notification_grace_period_after_carbon_received", true)) {
 131				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 132			}
 133
 134			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 135				String pgpBody = mMessageParser.getPgpBody(packet);
 136				if (pgpBody != null) {
 137					message = mMessageParser.parsePgpChat(pgpBody, packet,
 138							account);
 139					message.markUnread();
 140				} else if ((packet.getBody() != null)
 141						&& (packet.getBody().startsWith("?OTR"))) {
 142					message = mMessageParser.parseOtrChat(packet, account);
 143					if (message != null) {
 144						message.markUnread();
 145					}
 146				} else if (packet.hasChild("body")) {
 147					message = mMessageParser
 148							.parsePlainTextChat(packet, account);
 149					message.markUnread();
 150				} else if (packet.hasChild("received")
 151						|| (packet.hasChild("sent"))) {
 152					message = mMessageParser
 153							.parseCarbonMessage(packet, account);
 154					if (message != null) {
 155						if (message.getStatus() == Message.STATUS_SEND) {
 156							lastCarbonMessageReceived = SystemClock
 157									.elapsedRealtime();
 158							notify = false;
 159							message.getConversation().markRead();
 160						} else {
 161							message.markUnread();
 162						}
 163					}
 164				}
 165
 166			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 167				message = mMessageParser.parseGroupchat(packet, account);
 168				if (message != null) {
 169					if (message.getStatus() == Message.STATUS_RECIEVED) {
 170						message.markUnread();
 171					} else {
 172						message.getConversation().markRead();
 173						notify = false;
 174					}
 175				}
 176			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 177				mMessageParser.parseError(packet, account);
 178				return;
 179			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 180				if (packet.hasChild("x")) {
 181					Element x = packet.findChild("x");
 182					if (x.hasChild("invite")) {
 183						findOrCreateConversation(account, packet.getFrom(),
 184								true);
 185						if (convChangedListener != null) {
 186							convChangedListener.onConversationListChanged();
 187						}
 188						Log.d(LOGTAG,
 189								"invitation received to " + packet.getFrom());
 190					}
 191
 192				} else {
 193					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 194				}
 195			}
 196			if ((message == null) || (message.getBody() == null)) {
 197				return;
 198			}
 199			if (packet.hasChild("delay")) {
 200				try {
 201					String stamp = packet.findChild("delay").getAttribute(
 202							"stamp");
 203					stamp = stamp.replace("Z", "+0000");
 204					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 205							.parse(stamp);
 206					message.setTime(date.getTime());
 207				} catch (ParseException e) {
 208					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 209				}
 210			}
 211			Conversation conversation = message.getConversation();
 212			conversation.getMessages().add(message);
 213			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 214				databaseBackend.createMessage(message);
 215			}
 216			if (convChangedListener != null) {
 217				convChangedListener.onConversationListChanged();
 218			} else {
 219				UIHelper.updateNotification(getApplicationContext(),
 220						getConversations(), message.getConversation(), notify);
 221			}
 222		}
 223	};
 224	private OnStatusChanged statusListener = new OnStatusChanged() {
 225
 226		@Override
 227		public void onStatusChanged(Account account) {
 228			if (accountChangedListener != null) {
 229				accountChangedListener.onAccountListChangedListener();
 230			}
 231			if (account.getStatus() == Account.STATUS_ONLINE) {
 232				List<Conversation> conversations = getConversations();
 233				for (int i = 0; i < conversations.size(); ++i) {
 234					if (conversations.get(i).getAccount() == account) {
 235						sendUnsendMessages(conversations.get(i));
 236					}
 237				}
 238				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 239			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 240				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 241					int timeToReconnect = mRandom.nextInt(50) + 10;
 242					scheduleWakeupCall(timeToReconnect, false);
 243				}
 244
 245			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 246				databaseBackend.updateAccount(account);
 247				reconnectAccount(account, true);
 248			} else {
 249				UIHelper.showErrorNotification(getApplicationContext(),
 250						getAccounts());
 251			}
 252		}
 253	};
 254
 255	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 256
 257		@Override
 258		public void onPresencePacketReceived(final Account account,
 259				PresencePacket packet) {
 260			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 261				Conversation muc = findMuc(
 262						packet.getAttribute("from").split("/")[0], account);
 263				if (muc != null) {
 264					muc.getMucOptions().processPacket(packet);
 265				} else {
 266					Log.d(LOGTAG, account.getJid()
 267							+ ": could not find muc for received muc package "
 268							+ packet.toString());
 269				}
 270			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 271				Conversation muc = findMuc(
 272						packet.getAttribute("from").split("/")[0], account);
 273				if (muc != null) {
 274					Log.d(LOGTAG,
 275							account.getJid() + ": reading muc status packet "
 276									+ packet.toString());
 277					int error = muc.getMucOptions().getError();
 278					muc.getMucOptions().processPacket(packet);
 279					if ((muc.getMucOptions().getError() != error)
 280							&& (convChangedListener != null)) {
 281						Log.d(LOGTAG, "muc error status changed");
 282						convChangedListener.onConversationListChanged();
 283					}
 284				}
 285			} else {
 286				String[] fromParts = packet.getAttribute("from").split("/");
 287				String type = packet.getAttribute("type");
 288				if (fromParts[0].equals(account.getJid())) {
 289					if (fromParts.length == 2) {
 290						if (type == null) {
 291							account.updatePresence(fromParts[1], Presences
 292									.parseShow(packet.findChild("show")));
 293						} else if (type.equals("unavailable")) {
 294							account.removePresence(fromParts[1]);
 295						}
 296					}
 297
 298				} else {
 299					Contact contact = findContact(account, fromParts[0]);
 300					if (contact == null) {
 301						if ("subscribe".equals(type)) {
 302							account.getXmppConnection().addPendingSubscription(
 303									fromParts[0]);
 304						} else {
 305							// Log.d(LOGTAG,packet.getFrom()+
 306							// " could not be found");
 307						}
 308						return;
 309					}
 310					if (type == null) {
 311						if (fromParts.length == 2) {
 312							contact.updatePresence(fromParts[1], Presences
 313									.parseShow(packet.findChild("show")));
 314							PgpEngine pgp = getPgpEngine();
 315							if (pgp != null) {
 316								Element x = packet.findChild("x",
 317										"jabber:x:signed");
 318								if (x != null) {
 319									Element status = packet.findChild("status");
 320									String msg;
 321									if (status != null) {
 322										msg = status.getContent();
 323									} else {
 324										msg = "";
 325									}
 326									contact.setPgpKeyId(pgp.fetchKeyId(account,
 327											msg, x.getContent()));
 328									Log.d("xmppService",
 329											account.getJid()
 330													+ ": fetched key id for "
 331													+ contact.getJid()
 332													+ " was:"
 333													+ contact.getPgpKeyId());
 334								}
 335							}
 336							replaceContactInConversation(account,
 337									contact.getJid(), contact);
 338							databaseBackend.updateContact(contact, true);
 339						} else {
 340							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 341						}
 342					} else if (type.equals("unavailable")) {
 343						if (fromParts.length != 2) {
 344							contact.clearPresences();
 345						} else {
 346							contact.removePresence(fromParts[1]);
 347						}
 348						replaceContactInConversation(account, contact.getJid(),
 349								contact);
 350						databaseBackend.updateContact(contact, true);
 351					} else if (type.equals("subscribe")) {
 352						Log.d(LOGTAG, "received subscribe packet from "
 353								+ packet.getFrom());
 354						if (contact
 355								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 356							Log.d(LOGTAG, "preemptive grant; granting");
 357							sendPresenceUpdatesTo(contact);
 358							contact.setSubscriptionOption(Contact.Subscription.FROM);
 359							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 360							replaceContactInConversation(account,
 361									contact.getJid(), contact);
 362							databaseBackend.updateContact(contact, false);
 363							if ((contact
 364									.getSubscriptionOption(Contact.Subscription.ASKING))
 365									&& (!contact
 366											.getSubscriptionOption(Contact.Subscription.TO))) {
 367								requestPresenceUpdatesFrom(contact);
 368							}
 369						} else {
 370							account.getXmppConnection().addPendingSubscription(
 371									fromParts[0]);
 372						}
 373					} else {
 374						// Log.d(LOGTAG, packet.toString());
 375					}
 376				}
 377			}
 378		}
 379	};
 380
 381	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 382
 383		@Override
 384		public void onIqPacketReceived(Account account, IqPacket packet) {
 385			if (packet.hasChild("query", "jabber:iq:roster")) {
 386				String from = packet.getFrom();
 387				if ((from == null) || (from.equals(account.getJid()))) {
 388					Element query = packet.findChild("query");
 389					processRosterItems(account, query);
 390					mergePhoneContactsWithRoster(null);
 391				} else {
 392					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 393				}
 394			} else if (packet
 395					.hasChild("open", "http://jabber.org/protocol/ibb")
 396					|| packet
 397							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 398				XmppConnectionService.this.mJingleConnectionManager
 399						.deliverIbbPacket(account, packet);
 400			} else if (packet.hasChild("query",
 401					"http://jabber.org/protocol/disco#info")) {
 402				IqPacket iqResponse = packet
 403						.generateRespone(IqPacket.TYPE_RESULT);
 404				Element query = iqResponse.addChild("query",
 405						"http://jabber.org/protocol/disco#info");
 406				query.addChild("feature").setAttribute("var",
 407						"urn:xmpp:jingle:1");
 408				query.addChild("feature").setAttribute("var",
 409						"urn:xmpp:jingle:apps:file-transfer:3");
 410				query.addChild("feature").setAttribute("var",
 411						"urn:xmpp:jingle:transports:s5b:1");
 412				query.addChild("feature").setAttribute("var",
 413						"urn:xmpp:jingle:transports:ibb:1");
 414				account.getXmppConnection().sendIqPacket(iqResponse, null);
 415			} else {
 416				if ((packet.getType() == IqPacket.TYPE_GET)
 417						|| (packet.getType() == IqPacket.TYPE_SET)) {
 418					IqPacket response = packet
 419							.generateRespone(IqPacket.TYPE_ERROR);
 420					Element error = response.addChild("error");
 421					error.setAttribute("type", "cancel");
 422					error.addChild("feature-not-implemented",
 423							"urn:ietf:params:xml:ns:xmpp-stanzas");
 424					account.getXmppConnection().sendIqPacket(response, null);
 425				}
 426			}
 427		}
 428	};
 429
 430	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 431
 432		@Override
 433		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 434			mJingleConnectionManager.deliverPacket(account, packet);
 435		}
 436	};
 437
 438	private OpenPgpServiceConnection pgpServiceConnection;
 439	private PgpEngine mPgpEngine = null;
 440	private Intent pingIntent;
 441	private PendingIntent pendingPingIntent = null;
 442	private WakeLock wakeLock;
 443	private PowerManager pm;
 444
 445	public PgpEngine getPgpEngine() {
 446		if (pgpServiceConnection.isBound()) {
 447			if (this.mPgpEngine == null) {
 448				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 449						getApplicationContext(),
 450						pgpServiceConnection.getService()), this);
 451			}
 452			return mPgpEngine;
 453		} else {
 454			return null;
 455		}
 456
 457	}
 458
 459	public FileBackend getFileBackend() {
 460		return this.fileBackend;
 461	}
 462
 463	public Message attachImageToConversation(final Conversation conversation,
 464			final Uri uri, final UiCallback callback) {
 465		final Message message;
 466		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 467			message = new Message(conversation, "",
 468					Message.ENCRYPTION_DECRYPTED);
 469		} else {
 470			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 471		}
 472		message.setPresence(conversation.getNextPresence());
 473		message.setType(Message.TYPE_IMAGE);
 474		message.setStatus(Message.STATUS_OFFERED);
 475		new Thread(new Runnable() {
 476
 477			@Override
 478			public void run() {
 479				try {
 480					getFileBackend().copyImageToPrivateStorage(message, uri);
 481					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 482						getPgpEngine().encrypt(message, callback);
 483					} else {
 484						callback.success();
 485					}
 486				} catch (FileBackend.ImageCopyException e) {
 487					callback.error(e.getResId());
 488				}
 489			}
 490		}).start();
 491		return message;
 492	}
 493
 494	protected Conversation findMuc(String name, Account account) {
 495		for (Conversation conversation : this.conversations) {
 496			if (conversation.getContactJid().split("/")[0].equals(name)
 497					&& (conversation.getAccount() == account)) {
 498				return conversation;
 499			}
 500		}
 501		return null;
 502	}
 503
 504	private void processRosterItems(Account account, Element elements) {
 505		String version = elements.getAttribute("ver");
 506		if (version != null) {
 507			account.setRosterVersion(version);
 508			databaseBackend.updateAccount(account);
 509		}
 510		for (Element item : elements.getChildren()) {
 511			if (item.getName().equals("item")) {
 512				String jid = item.getAttribute("jid");
 513				String subscription = item.getAttribute("subscription");
 514				Contact contact = databaseBackend.findContact(account, jid);
 515				if (contact == null) {
 516					if (!subscription.equals("remove")) {
 517						String name = item.getAttribute("name");
 518						if (name == null) {
 519							name = jid.split("@")[0];
 520						}
 521						contact = new Contact(account, name, jid, null);
 522						contact.parseSubscriptionFromElement(item);
 523						databaseBackend.createContact(contact);
 524					}
 525				} else {
 526					if (subscription.equals("remove")) {
 527						databaseBackend.deleteContact(contact);
 528						replaceContactInConversation(account, contact.getJid(),
 529								null);
 530					} else {
 531						contact.parseSubscriptionFromElement(item);
 532						databaseBackend.updateContact(contact, false);
 533						replaceContactInConversation(account, contact.getJid(),
 534								contact);
 535					}
 536				}
 537			}
 538		}
 539	}
 540
 541	private void replaceContactInConversation(Account account, String jid,
 542			Contact contact) {
 543		List<Conversation> conversations = getConversations();
 544		for (Conversation c : conversations) {
 545			if (c.getContactJid().equals(jid) && (c.getAccount() == account)) {
 546				c.setContact(contact);
 547				break;
 548			}
 549		}
 550	}
 551
 552	public class XmppConnectionBinder extends Binder {
 553		public XmppConnectionService getService() {
 554			return XmppConnectionService.this;
 555		}
 556	}
 557
 558	@Override
 559	public int onStartCommand(Intent intent, int flags, int startId) {
 560		this.wakeLock.acquire();
 561		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 562		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 563				.getSystemService(Context.CONNECTIVITY_SERVICE);
 564		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 565		boolean isConnected = activeNetwork != null
 566				&& activeNetwork.isConnected();
 567
 568		for (Account account : accounts) {
 569			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 570				if (!isConnected) {
 571					account.setStatus(Account.STATUS_NO_INTERNET);
 572					if (statusListener != null) {
 573						statusListener.onStatusChanged(account);
 574					}
 575				} else {
 576					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 577						account.setStatus(Account.STATUS_OFFLINE);
 578						if (statusListener != null) {
 579							statusListener.onStatusChanged(account);
 580						}
 581					}
 582
 583					// TODO 3 remaining cases
 584					if (account.getStatus() == Account.STATUS_ONLINE) {
 585						long lastReceived = account.getXmppConnection().lastPaketReceived;
 586						long lastSent = account.getXmppConnection().lastPingSent;
 587						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 588							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 589							this.reconnectAccount(account, true);
 590						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 591							account.getXmppConnection().sendPing();
 592							account.getXmppConnection().lastPingSent = SystemClock
 593									.elapsedRealtime();
 594							this.scheduleWakeupCall(2, false);
 595						}
 596					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 597						if (account.getXmppConnection() == null) {
 598							account.setXmppConnection(this
 599									.createConnection(account));
 600						}
 601						account.getXmppConnection().lastPingSent = SystemClock
 602								.elapsedRealtime();
 603						new Thread(account.getXmppConnection()).start();
 604					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 605							&& ((SystemClock.elapsedRealtime() - account
 606									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 607						Log.d(LOGTAG, account.getJid()
 608								+ ": time out during connect reconnecting");
 609						reconnectAccount(account, true);
 610					} else {
 611						Log.d(LOGTAG,
 612								"seconds since last connect:"
 613										+ ((SystemClock.elapsedRealtime() - account
 614												.getXmppConnection().lastConnect) / 1000));
 615						Log.d(LOGTAG,
 616								account.getJid() + ": status="
 617										+ account.getStatus());
 618						// TODO notify user of ssl cert problem or auth problem
 619						// or what ever
 620					}
 621					// in any case. reschedule wakup call
 622					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 623				}
 624				if (accountChangedListener != null) {
 625					accountChangedListener.onAccountListChangedListener();
 626				}
 627			}
 628		}
 629		if (wakeLock.isHeld()) {
 630			wakeLock.release();
 631		}
 632		return START_STICKY;
 633	}
 634
 635	@Override
 636	public void onCreate() {
 637		ExceptionHelper.init(getApplicationContext());
 638		this.databaseBackend = DatabaseBackend
 639				.getInstance(getApplicationContext());
 640		this.fileBackend = new FileBackend(getApplicationContext());
 641		this.accounts = databaseBackend.getAccounts();
 642
 643		this.getConversations();
 644
 645		getContentResolver().registerContentObserver(
 646				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 647		this.pgpServiceConnection = new OpenPgpServiceConnection(
 648				getApplicationContext(), "org.sufficientlysecure.keychain");
 649		this.pgpServiceConnection.bindToService();
 650
 651		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 652		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 653				"XmppConnectionService");
 654	}
 655
 656	@Override
 657	public void onDestroy() {
 658		Log.d(LOGTAG, "stopping service");
 659		super.onDestroy();
 660		for (Account account : accounts) {
 661			if (account.getXmppConnection() != null) {
 662				disconnect(account, true);
 663			}
 664		}
 665	}
 666
 667	protected void scheduleWakeupCall(int seconds, boolean ping) {
 668		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 669		Context context = getApplicationContext();
 670		AlarmManager alarmManager = (AlarmManager) context
 671				.getSystemService(Context.ALARM_SERVICE);
 672
 673		if (ping) {
 674			if (this.pingIntent == null) {
 675				this.pingIntent = new Intent(context, EventReceiver.class);
 676				this.pingIntent.setAction("ping");
 677				this.pingIntent.putExtra("time", timeToWake);
 678				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 679						this.pingIntent, 0);
 680				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 681						timeToWake, pendingPingIntent);
 682				// Log.d(LOGTAG,"schedule ping in "+seconds+" seconds");
 683			} else {
 684				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 685				if (scheduledTime < SystemClock.elapsedRealtime()
 686						|| (scheduledTime > timeToWake)) {
 687					this.pingIntent.putExtra("time", timeToWake);
 688					alarmManager.cancel(this.pendingPingIntent);
 689					this.pendingPingIntent = PendingIntent.getBroadcast(
 690							context, 0, this.pingIntent, 0);
 691					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 692							timeToWake, pendingPingIntent);
 693					// Log.d(LOGTAG,"reschedule old ping to ping in "+seconds+" seconds");
 694				}
 695			}
 696		} else {
 697			Intent intent = new Intent(context, EventReceiver.class);
 698			intent.setAction("ping_check");
 699			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 700					intent, 0);
 701			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 702					alarmIntent);
 703		}
 704
 705	}
 706
 707	public XmppConnection createConnection(Account account) {
 708		SharedPreferences sharedPref = getPreferences();
 709		account.setResource(sharedPref.getString("resource", "mobile")
 710				.toLowerCase(Locale.getDefault()));
 711		XmppConnection connection = new XmppConnection(account, this.pm);
 712		connection.setOnMessagePacketReceivedListener(this.messageListener);
 713		connection.setOnStatusChangedListener(this.statusListener);
 714		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 715		connection
 716				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 717		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 718		connection
 719				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 720
 721					@Override
 722					public void onTLSExceptionReceived(String fingerprint,
 723							Account account) {
 724						Log.d(LOGTAG, "tls exception arrived in service");
 725						if (tlsException != null) {
 726							tlsException.onTLSExceptionReceived(fingerprint,
 727									account);
 728						}
 729					}
 730				});
 731		connection.setOnBindListener(new OnBindListener() {
 732
 733			@Override
 734			public void onBind(Account account) {
 735				databaseBackend.clearPresences(account);
 736				account.clearPresences(); // self presences
 737				if (account.getXmppConnection().hasFeatureRosterManagment()) {
 738					updateRoster(account, null);
 739				}
 740				connectMultiModeConversations(account);
 741				if (convChangedListener != null) {
 742					convChangedListener.onConversationListChanged();
 743				}
 744			}
 745		});
 746		return connection;
 747	}
 748
 749	synchronized public void sendMessage(Message message, String presence) {
 750		Account account = message.getConversation().getAccount();
 751		Conversation conv = message.getConversation();
 752		MessagePacket packet = null;
 753		boolean saveInDb = false;
 754		boolean addToConversation = false;
 755		boolean send = false;
 756		if (account.getStatus() == Account.STATUS_ONLINE) {
 757			if (message.getType() == Message.TYPE_IMAGE) {
 758				mJingleConnectionManager.createNewConnection(message);
 759			} else {
 760				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 761					if (!conv.hasValidOtrSession()) {
 762						// starting otr session. messages will be send later
 763						conv.startOtrSession(getApplicationContext(), presence,
 764								true);
 765					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 766						// otr session aleary exists, creating message packet
 767						// accordingly
 768						packet = prepareMessagePacket(account, message,
 769								conv.getOtrSession());
 770						send = true;
 771						message.setStatus(Message.STATUS_SEND);
 772					}
 773					saveInDb = true;
 774					addToConversation = true;
 775				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 776					message.getConversation().endOtrIfNeeded();
 777					packet = new MessagePacket();
 778					packet.setType(MessagePacket.TYPE_CHAT);
 779					packet.setFrom(message.getConversation().getAccount()
 780							.getFullJid());
 781					packet.setTo(message.getCounterpart());
 782					packet.setBody("This is an XEP-0027 encryted message");
 783					packet.addChild("x", "jabber:x:encrypted").setContent(
 784							message.getEncryptedBody());
 785					message.setStatus(Message.STATUS_SEND);
 786					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 787					saveInDb = true;
 788					addToConversation = true;
 789					send = true;
 790				} else {
 791					message.getConversation().endOtrIfNeeded();
 792					// don't encrypt
 793					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 794						message.setStatus(Message.STATUS_SEND);
 795						saveInDb = true;
 796						addToConversation = true;
 797					}
 798					packet = prepareMessagePacket(account, message, null);
 799					send = true;
 800				}
 801			}
 802		} else {
 803			// account is offline
 804			saveInDb = true;
 805			addToConversation = true;
 806
 807		}
 808		if (saveInDb) {
 809			databaseBackend.createMessage(message);
 810		}
 811		if (addToConversation) {
 812			conv.getMessages().add(message);
 813			if (convChangedListener != null) {
 814				convChangedListener.onConversationListChanged();
 815			}
 816		}
 817		if ((send) && (packet != null)) {
 818			account.getXmppConnection().sendMessagePacket(packet);
 819		}
 820
 821	}
 822
 823	private void sendUnsendMessages(Conversation conversation) {
 824		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 825			if ((conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND)
 826					&& (conversation.getMessages().get(i).getEncryption() == Message.ENCRYPTION_NONE)) {
 827				Message message = conversation.getMessages().get(i);
 828				MessagePacket packet = prepareMessagePacket(
 829						conversation.getAccount(), message, null);
 830				conversation.getAccount().getXmppConnection()
 831						.sendMessagePacket(packet);
 832				message.setStatus(Message.STATUS_SEND);
 833				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 834					databaseBackend.updateMessage(message);
 835				} else {
 836					databaseBackend.deleteMessage(message);
 837					conversation.getMessages().remove(i);
 838					i--;
 839				}
 840			}
 841		}
 842	}
 843
 844	public MessagePacket prepareMessagePacket(Account account, Message message,
 845			Session otrSession) {
 846		MessagePacket packet = new MessagePacket();
 847		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 848			packet.setType(MessagePacket.TYPE_CHAT);
 849			if (otrSession != null) {
 850				try {
 851					packet.setBody(otrSession.transformSending(message
 852							.getBody()));
 853				} catch (OtrException e) {
 854					Log.d(LOGTAG,
 855							account.getJid()
 856									+ ": could not encrypt message to "
 857									+ message.getCounterpart());
 858				}
 859				packet.addChild("private", "urn:xmpp:carbons:2");
 860				packet.addChild("no-copy", "urn:xmpp:hints");
 861				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 862						+ otrSession.getSessionID().getUserID());
 863				packet.setFrom(account.getFullJid());
 864			} else {
 865				packet.setBody(message.getBody());
 866				packet.setTo(message.getCounterpart());
 867				packet.setFrom(account.getJid());
 868			}
 869		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 870			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 871			packet.setBody(message.getBody());
 872			packet.setTo(message.getCounterpart().split("/")[0]);
 873			packet.setFrom(account.getJid());
 874		}
 875		packet.setId(message.getUuid());
 876		return packet;
 877	}
 878
 879	private void getRoster(Account account,
 880			final OnRosterFetchedListener listener) {
 881		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 882		for (int i = 0; i < contacts.size(); ++i) {
 883			contacts.get(i).setAccount(account);
 884		}
 885		if (listener != null) {
 886			listener.onRosterFetched(contacts);
 887		}
 888	}
 889
 890	public List<Contact> getRoster(Account account) {
 891		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 892		for (int i = 0; i < contacts.size(); ++i) {
 893			contacts.get(i).setAccount(account);
 894		}
 895		return contacts;
 896	}
 897
 898	public void updateRoster(final Account account,
 899			final OnRosterFetchedListener listener) {
 900		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 901		if (!"".equals(account.getRosterVersion())) {
 902			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 903					+ account.getRosterVersion());
 904		} else {
 905			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 906		}
 907		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 908				account.getRosterVersion());
 909		account.getXmppConnection().sendIqPacket(iqPacket,
 910				new OnIqPacketReceived() {
 911
 912					@Override
 913					public void onIqPacketReceived(final Account account,
 914							IqPacket packet) {
 915						Element roster = packet.findChild("query");
 916						if (roster != null) {
 917							Log.d(LOGTAG, account.getJid()
 918									+ ": processing roster");
 919							processRosterItems(account, roster);
 920							StringBuilder mWhere = new StringBuilder();
 921							mWhere.append("jid NOT IN(");
 922							List<Element> items = roster.getChildren();
 923							for (int i = 0; i < items.size(); ++i) {
 924								mWhere.append(DatabaseUtils
 925										.sqlEscapeString(items.get(i)
 926												.getAttribute("jid")));
 927								if (i != items.size() - 1) {
 928									mWhere.append(",");
 929								}
 930							}
 931							mWhere.append(") and accountUuid = \"");
 932							mWhere.append(account.getUuid());
 933							mWhere.append("\"");
 934							List<Contact> contactsToDelete = databaseBackend
 935									.getContacts(mWhere.toString());
 936							for (Contact contact : contactsToDelete) {
 937								databaseBackend.deleteContact(contact);
 938								replaceContactInConversation(account,
 939										contact.getJid(), null);
 940							}
 941
 942						} else {
 943							Log.d(LOGTAG, account.getJid()
 944									+ ": empty roster returend");
 945						}
 946						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 947
 948							@Override
 949							public void phoneContactsMerged() {
 950								if (listener != null) {
 951									getRoster(account, listener);
 952								}
 953							}
 954						});
 955					}
 956				});
 957	}
 958
 959	public void mergePhoneContactsWithRoster(
 960			final OnPhoneContactsMerged listener) {
 961		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 962				new OnPhoneContactsLoadedListener() {
 963					@Override
 964					public void onPhoneContactsLoaded(
 965							Hashtable<String, Bundle> phoneContacts) {
 966						List<Contact> contacts = databaseBackend
 967								.getContactsByAccount(null);
 968						for (int i = 0; i < contacts.size(); ++i) {
 969							Contact contact = contacts.get(i);
 970							if (phoneContacts.containsKey(contact.getJid())) {
 971								Bundle phoneContact = phoneContacts.get(contact
 972										.getJid());
 973								String systemAccount = phoneContact
 974										.getInt("phoneid")
 975										+ "#"
 976										+ phoneContact.getString("lookup");
 977								contact.setSystemAccount(systemAccount);
 978								contact.setPhotoUri(phoneContact
 979										.getString("photouri"));
 980								contact.setDisplayName(phoneContact
 981										.getString("displayname"));
 982								databaseBackend.updateContact(contact, false);
 983								replaceContactInConversation(
 984										contact.getAccount(), contact.getJid(),
 985										contact);
 986							} else {
 987								if ((contact.getSystemAccount() != null)
 988										|| (contact.getProfilePhoto() != null)) {
 989									contact.setSystemAccount(null);
 990									contact.setPhotoUri(null);
 991									databaseBackend.updateContact(contact,
 992											false);
 993									replaceContactInConversation(
 994											contact.getAccount(),
 995											contact.getJid(), contact);
 996								}
 997							}
 998						}
 999						if (listener != null) {
1000							listener.phoneContactsMerged();
1001						}
1002					}
1003				});
1004	}
1005
1006	public List<Conversation> getConversations() {
1007		if (this.conversations == null) {
1008			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
1009			for (Account account : this.accounts) {
1010				accountLookupTable.put(account.getUuid(), account);
1011			}
1012			this.conversations = databaseBackend
1013					.getConversations(Conversation.STATUS_AVAILABLE);
1014			for (Conversation conv : this.conversations) {
1015				Account account = accountLookupTable.get(conv.getAccountUuid());
1016				conv.setAccount(account);
1017				conv.setContact(findContact(account, conv.getContactJid()));
1018				conv.setMessages(databaseBackend.getMessages(conv, 50));
1019			}
1020		}
1021		Collections.sort(this.conversations, new Comparator<Conversation>() {
1022			@Override
1023			public int compare(Conversation lhs, Conversation rhs) {
1024				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
1025						.getLatestMessage().getTimeSent());
1026			}
1027		});
1028		return this.conversations;
1029	}
1030
1031	public List<Account> getAccounts() {
1032		return this.accounts;
1033	}
1034
1035	public Contact findContact(Account account, String jid) {
1036		Contact contact = databaseBackend.findContact(account, jid);
1037		if (contact != null) {
1038			contact.setAccount(account);
1039		}
1040		return contact;
1041	}
1042
1043	public Conversation findOrCreateConversation(Account account, String jid,
1044			boolean muc) {
1045		for (Conversation conv : this.getConversations()) {
1046			if ((conv.getAccount().equals(account))
1047					&& (conv.getContactJid().split("/")[0].equals(jid))) {
1048				return conv;
1049			}
1050		}
1051		Conversation conversation = databaseBackend.findConversation(account,
1052				jid);
1053		if (conversation != null) {
1054			conversation.setStatus(Conversation.STATUS_AVAILABLE);
1055			conversation.setAccount(account);
1056			if (muc) {
1057				conversation.setMode(Conversation.MODE_MULTI);
1058			} else {
1059				conversation.setMode(Conversation.MODE_SINGLE);
1060			}
1061			conversation.setMessages(databaseBackend.getMessages(conversation,
1062					50));
1063			this.databaseBackend.updateConversation(conversation);
1064			conversation.setContact(findContact(account,
1065					conversation.getContactJid()));
1066		} else {
1067			String conversationName;
1068			Contact contact = findContact(account, jid);
1069			if (contact != null) {
1070				conversationName = contact.getDisplayName();
1071			} else {
1072				conversationName = jid.split("@")[0];
1073			}
1074			if (muc) {
1075				conversation = new Conversation(conversationName, account, jid,
1076						Conversation.MODE_MULTI);
1077			} else {
1078				conversation = new Conversation(conversationName, account, jid,
1079						Conversation.MODE_SINGLE);
1080			}
1081			conversation.setContact(contact);
1082			this.databaseBackend.createConversation(conversation);
1083		}
1084		this.conversations.add(conversation);
1085		if ((account.getStatus() == Account.STATUS_ONLINE)
1086				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
1087			joinMuc(conversation);
1088		}
1089		if (this.convChangedListener != null) {
1090			this.convChangedListener.onConversationListChanged();
1091		}
1092		return conversation;
1093	}
1094
1095	public void archiveConversation(Conversation conversation) {
1096		if (conversation.getMode() == Conversation.MODE_MULTI) {
1097			leaveMuc(conversation);
1098		} else {
1099			conversation.endOtrIfNeeded();
1100		}
1101		this.databaseBackend.updateConversation(conversation);
1102		this.conversations.remove(conversation);
1103		if (this.convChangedListener != null) {
1104			this.convChangedListener.onConversationListChanged();
1105		}
1106	}
1107
1108	public void clearConversationHistory(Conversation conversation) {
1109		this.databaseBackend.deleteMessagesInConversation(conversation);
1110		this.fileBackend.removeFiles(conversation);
1111		conversation.getMessages().clear();
1112		if (this.convChangedListener != null) {
1113			this.convChangedListener.onConversationListChanged();
1114		}
1115	}
1116
1117	public int getConversationCount() {
1118		return this.databaseBackend.getConversationCount();
1119	}
1120
1121	public void createAccount(Account account) {
1122		databaseBackend.createAccount(account);
1123		this.accounts.add(account);
1124		this.reconnectAccount(account, false);
1125		if (accountChangedListener != null)
1126			accountChangedListener.onAccountListChangedListener();
1127	}
1128
1129	public void deleteContact(Contact contact) {
1130		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1131		Element query = iq.query("jabber:iq:roster");
1132		query.addChild("item").setAttribute("jid", contact.getJid())
1133				.setAttribute("subscription", "remove");
1134		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1135		replaceContactInConversation(contact.getAccount(), contact.getJid(),
1136				null);
1137		databaseBackend.deleteContact(contact);
1138	}
1139
1140	public void updateAccount(Account account) {
1141		this.statusListener.onStatusChanged(account);
1142		databaseBackend.updateAccount(account);
1143		reconnectAccount(account, false);
1144		if (accountChangedListener != null)
1145			accountChangedListener.onAccountListChangedListener();
1146	}
1147
1148	public void deleteAccount(Account account) {
1149		if (account.getXmppConnection() != null) {
1150			this.disconnect(account, true);
1151		}
1152		databaseBackend.deleteAccount(account);
1153		this.accounts.remove(account);
1154		if (accountChangedListener != null)
1155			accountChangedListener.onAccountListChangedListener();
1156	}
1157
1158	public void setOnConversationListChangedListener(
1159			OnConversationListChangedListener listener) {
1160		this.convChangedListener = listener;
1161		this.convChangedListenerCount++;
1162	}
1163
1164	public void removeOnConversationListChangedListener() {
1165		this.convChangedListenerCount--;
1166		if (this.convChangedListenerCount == 0) {
1167			this.convChangedListener = null;
1168		}
1169	}
1170
1171	public void setOnAccountListChangedListener(
1172			OnAccountListChangedListener listener) {
1173		this.accountChangedListener = listener;
1174	}
1175
1176	public void removeOnAccountListChangedListener() {
1177		this.accountChangedListener = null;
1178	}
1179
1180	public void connectMultiModeConversations(Account account) {
1181		List<Conversation> conversations = getConversations();
1182		for (int i = 0; i < conversations.size(); i++) {
1183			Conversation conversation = conversations.get(i);
1184			if ((conversation.getMode() == Conversation.MODE_MULTI)
1185					&& (conversation.getAccount() == account)) {
1186				joinMuc(conversation);
1187			}
1188		}
1189	}
1190
1191	public void joinMuc(Conversation conversation) {
1192		String[] mucParts = conversation.getContactJid().split("/");
1193		String muc;
1194		String nick;
1195		if (mucParts.length == 2) {
1196			muc = mucParts[0];
1197			nick = mucParts[1];
1198		} else {
1199			muc = mucParts[0];
1200			nick = conversation.getAccount().getUsername();
1201		}
1202		PresencePacket packet = new PresencePacket();
1203		packet.setAttribute("to", muc + "/" + nick);
1204		Element x = new Element("x");
1205		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1206		if (conversation.getMessages().size() != 0) {
1207			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1208			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1209			x.addChild("history").setAttribute("seconds", diff + "");
1210		}
1211		packet.addChild(x);
1212		conversation.getAccount().getXmppConnection()
1213				.sendPresencePacket(packet);
1214	}
1215
1216	private OnRenameListener renameListener = null;
1217
1218	public void setOnRenameListener(OnRenameListener listener) {
1219		this.renameListener = listener;
1220	}
1221
1222	public void renameInMuc(final Conversation conversation, final String nick) {
1223		final MucOptions options = conversation.getMucOptions();
1224		if (options.online()) {
1225			options.setOnRenameListener(new OnRenameListener() {
1226
1227				@Override
1228				public void onRename(boolean success) {
1229					if (renameListener != null) {
1230						renameListener.onRename(success);
1231					}
1232					if (success) {
1233						String jid = conversation.getContactJid().split("/")[0]
1234								+ "/" + nick;
1235						conversation.setContactJid(jid);
1236						databaseBackend.updateConversation(conversation);
1237					}
1238				}
1239			});
1240			options.flagAboutToRename();
1241			PresencePacket packet = new PresencePacket();
1242			packet.setAttribute("to",
1243					conversation.getContactJid().split("/")[0] + "/" + nick);
1244			packet.setAttribute("from", conversation.getAccount().getFullJid());
1245
1246			conversation.getAccount().getXmppConnection()
1247					.sendPresencePacket(packet, null);
1248		} else {
1249			String jid = conversation.getContactJid().split("/")[0] + "/"
1250					+ nick;
1251			conversation.setContactJid(jid);
1252			databaseBackend.updateConversation(conversation);
1253			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1254				joinMuc(conversation);
1255			}
1256		}
1257	}
1258
1259	public void leaveMuc(Conversation conversation) {
1260		PresencePacket packet = new PresencePacket();
1261		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1262				+ "/" + conversation.getMucOptions().getNick());
1263		packet.setAttribute("from", conversation.getAccount().getFullJid());
1264		packet.setAttribute("type", "unavailable");
1265		Log.d(LOGTAG, "send leaving muc " + packet);
1266		conversation.getAccount().getXmppConnection()
1267				.sendPresencePacket(packet);
1268		conversation.getMucOptions().setOffline();
1269	}
1270
1271	public void disconnect(Account account, boolean force) {
1272		if ((account.getStatus() == Account.STATUS_ONLINE)
1273				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1274			if (!force) {
1275				List<Conversation> conversations = getConversations();
1276				for (int i = 0; i < conversations.size(); i++) {
1277					Conversation conversation = conversations.get(i);
1278					if (conversation.getAccount() == account) {
1279						if (conversation.getMode() == Conversation.MODE_MULTI) {
1280							leaveMuc(conversation);
1281						} else {
1282							conversation.endOtrIfNeeded();
1283						}
1284					}
1285				}
1286			}
1287			account.getXmppConnection().disconnect(force);
1288		}
1289	}
1290
1291	@Override
1292	public IBinder onBind(Intent intent) {
1293		return mBinder;
1294	}
1295
1296	public void updateContact(Contact contact) {
1297		databaseBackend.updateContact(contact, false);
1298		replaceContactInConversation(contact.getAccount(), contact.getJid(),
1299				contact);
1300	}
1301
1302	public void updateMessage(Message message) {
1303		databaseBackend.updateMessage(message);
1304	}
1305
1306	public void createContact(Contact contact) {
1307		SharedPreferences sharedPref = getPreferences();
1308		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1309		if (autoGrant) {
1310			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1311			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1312		}
1313		databaseBackend.createContact(contact);
1314		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1315		Element query = new Element("query");
1316		query.setAttribute("xmlns", "jabber:iq:roster");
1317		Element item = new Element("item");
1318		item.setAttribute("jid", contact.getJid());
1319		item.setAttribute("name", contact.getJid());
1320		query.addChild(item);
1321		iq.addChild(query);
1322		Account account = contact.getAccount();
1323		account.getXmppConnection().sendIqPacket(iq, null);
1324		if (autoGrant) {
1325			requestPresenceUpdatesFrom(contact);
1326			if (account.getXmppConnection().hasPendingSubscription(
1327					contact.getJid())) {
1328				Log.d("xmppService", "contact had pending subscription");
1329				sendPresenceUpdatesTo(contact);
1330			}
1331		}
1332		replaceContactInConversation(contact.getAccount(), contact.getJid(),
1333				contact);
1334	}
1335
1336	public void requestPresenceUpdatesFrom(Contact contact) {
1337		// Requesting a Subscription type=subscribe
1338		PresencePacket packet = new PresencePacket();
1339		packet.setAttribute("type", "subscribe");
1340		packet.setAttribute("to", contact.getJid());
1341		packet.setAttribute("from", contact.getAccount().getJid());
1342		Log.d(LOGTAG, packet.toString());
1343		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1344	}
1345
1346	public void stopPresenceUpdatesFrom(Contact contact) {
1347		// Unsubscribing type='unsubscribe'
1348		PresencePacket packet = new PresencePacket();
1349		packet.setAttribute("type", "unsubscribe");
1350		packet.setAttribute("to", contact.getJid());
1351		packet.setAttribute("from", contact.getAccount().getJid());
1352		Log.d(LOGTAG, packet.toString());
1353		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1354	}
1355
1356	public void stopPresenceUpdatesTo(Contact contact) {
1357		// Canceling a Subscription type=unsubscribed
1358		PresencePacket packet = new PresencePacket();
1359		packet.setAttribute("type", "unsubscribed");
1360		packet.setAttribute("to", contact.getJid());
1361		packet.setAttribute("from", contact.getAccount().getJid());
1362		Log.d(LOGTAG, packet.toString());
1363		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1364	}
1365
1366	public void sendPresenceUpdatesTo(Contact contact) {
1367		// type='subscribed'
1368		PresencePacket packet = new PresencePacket();
1369		packet.setAttribute("type", "subscribed");
1370		packet.setAttribute("to", contact.getJid());
1371		packet.setAttribute("from", contact.getAccount().getJid());
1372		Log.d(LOGTAG, packet.toString());
1373		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1374	}
1375
1376	public void sendPgpPresence(Account account, String signature) {
1377		PresencePacket packet = new PresencePacket();
1378		packet.setAttribute("from", account.getFullJid());
1379		Element status = new Element("status");
1380		status.setContent("online");
1381		packet.addChild(status);
1382		Element x = new Element("x");
1383		x.setAttribute("xmlns", "jabber:x:signed");
1384		x.setContent(signature);
1385		packet.addChild(x);
1386		account.getXmppConnection().sendPresencePacket(packet);
1387	}
1388
1389	public void updateConversation(Conversation conversation) {
1390		this.databaseBackend.updateConversation(conversation);
1391	}
1392
1393	public Contact findContact(String uuid) {
1394		Contact contact = this.databaseBackend.getContact(uuid);
1395		if (contact != null) {
1396			for (Account account : getAccounts()) {
1397				if (contact.getAccountUuid().equals(account.getUuid())) {
1398					contact.setAccount(account);
1399				}
1400			}
1401		}
1402		return contact;
1403	}
1404
1405	public void removeOnTLSExceptionReceivedListener() {
1406		this.tlsException = null;
1407	}
1408
1409	// TODO dont let thread sleep but schedule wake up
1410	public void reconnectAccount(final Account account, final boolean force) {
1411		new Thread(new Runnable() {
1412
1413			@Override
1414			public void run() {
1415				if (account.getXmppConnection() != null) {
1416					disconnect(account, force);
1417				}
1418				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1419					if (account.getXmppConnection() == null) {
1420						account.setXmppConnection(createConnection(account));
1421					}
1422					Thread thread = new Thread(account.getXmppConnection());
1423					thread.start();
1424					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1425				}
1426			}
1427		}).start();
1428	}
1429
1430	public void sendConversationSubject(Conversation conversation,
1431			String subject) {
1432		MessagePacket packet = new MessagePacket();
1433		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1434		packet.setTo(conversation.getContactJid().split("/")[0]);
1435		Element subjectChild = new Element("subject");
1436		subjectChild.setContent(subject);
1437		packet.addChild(subjectChild);
1438		packet.setFrom(conversation.getAccount().getJid());
1439		Account account = conversation.getAccount();
1440		if (account.getStatus() == Account.STATUS_ONLINE) {
1441			account.getXmppConnection().sendMessagePacket(packet);
1442		}
1443	}
1444
1445	public void inviteToConference(Conversation conversation,
1446			List<Contact> contacts) {
1447		for (Contact contact : contacts) {
1448			MessagePacket packet = new MessagePacket();
1449			packet.setTo(conversation.getContactJid().split("/")[0]);
1450			packet.setFrom(conversation.getAccount().getFullJid());
1451			Element x = new Element("x");
1452			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1453			Element invite = new Element("invite");
1454			invite.setAttribute("to", contact.getJid());
1455			x.addChild(invite);
1456			packet.addChild(x);
1457			Log.d(LOGTAG, packet.toString());
1458			conversation.getAccount().getXmppConnection()
1459					.sendMessagePacket(packet);
1460		}
1461
1462	}
1463
1464	public boolean markMessage(Account account, String recipient, String uuid,
1465			int status) {
1466		boolean marked = false;
1467		for (Conversation conversation : getConversations()) {
1468			if (conversation.getContactJid().equals(recipient)
1469					&& conversation.getAccount().equals(account)) {
1470				for (Message message : conversation.getMessages()) {
1471					if (message.getUuid().equals(uuid)) {
1472						markMessage(message, status);
1473						marked = true;
1474						break;
1475					}
1476				}
1477				break;
1478			}
1479		}
1480		return marked;
1481	}
1482
1483	public void markMessage(Message message, int status) {
1484		message.setStatus(status);
1485		databaseBackend.updateMessage(message);
1486		if (convChangedListener != null) {
1487			convChangedListener.onConversationListChanged();
1488		}
1489	}
1490
1491	public SharedPreferences getPreferences() {
1492		return PreferenceManager
1493				.getDefaultSharedPreferences(getApplicationContext());
1494	}
1495
1496	public void updateUi(Conversation conversation, boolean notify) {
1497		if (convChangedListener != null) {
1498			convChangedListener.onConversationListChanged();
1499		} else {
1500			UIHelper.updateNotification(getApplicationContext(),
1501					getConversations(), conversation, notify);
1502		}
1503	}
1504}