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