XmppConnectionService.java

   1package eu.siacs.conversations.services;
   2
   3import java.text.ParseException;
   4import java.text.SimpleDateFormat;
   5import java.util.Collections;
   6import java.util.Comparator;
   7import java.util.Date;
   8import java.util.Hashtable;
   9import java.util.List;
  10import java.util.Locale;
  11import java.util.Random;
  12
  13import org.openintents.openpgp.util.OpenPgpApi;
  14import org.openintents.openpgp.util.OpenPgpServiceConnection;
  15
  16import net.java.otr4j.OtrException;
  17import net.java.otr4j.session.Session;
  18import net.java.otr4j.session.SessionStatus;
  19import eu.siacs.conversations.crypto.PgpEngine;
  20import eu.siacs.conversations.entities.Account;
  21import eu.siacs.conversations.entities.Contact;
  22import eu.siacs.conversations.entities.Conversation;
  23import eu.siacs.conversations.entities.Message;
  24import eu.siacs.conversations.entities.MucOptions;
  25import eu.siacs.conversations.entities.MucOptions.OnRenameListener;
  26import eu.siacs.conversations.entities.Presences;
  27import eu.siacs.conversations.parser.MessageParser;
  28import eu.siacs.conversations.persistance.DatabaseBackend;
  29import eu.siacs.conversations.persistance.FileBackend;
  30import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
  31import eu.siacs.conversations.ui.OnAccountListChangedListener;
  32import eu.siacs.conversations.ui.OnConversationListChangedListener;
  33import eu.siacs.conversations.ui.OnRosterFetchedListener;
  34import eu.siacs.conversations.ui.UiCallback;
  35import eu.siacs.conversations.utils.ExceptionHelper;
  36import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
  37import eu.siacs.conversations.utils.PhoneHelper;
  38import eu.siacs.conversations.utils.UIHelper;
  39import eu.siacs.conversations.xml.Element;
  40import eu.siacs.conversations.xmpp.OnBindListener;
  41import eu.siacs.conversations.xmpp.OnIqPacketReceived;
  42import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  43import eu.siacs.conversations.xmpp.OnPresencePacketReceived;
  44import eu.siacs.conversations.xmpp.OnStatusChanged;
  45import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
  46import eu.siacs.conversations.xmpp.XmppConnection;
  47import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  48import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
  49import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
  50import eu.siacs.conversations.xmpp.stanzas.IqPacket;
  51import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  52import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
  53import android.app.AlarmManager;
  54import android.app.PendingIntent;
  55import android.app.Service;
  56import android.content.Context;
  57import android.content.Intent;
  58import android.content.SharedPreferences;
  59import android.database.ContentObserver;
  60import android.database.DatabaseUtils;
  61import android.net.ConnectivityManager;
  62import android.net.NetworkInfo;
  63import android.net.Uri;
  64import android.os.Binder;
  65import android.os.Bundle;
  66import android.os.IBinder;
  67import android.os.PowerManager;
  68import android.os.PowerManager.WakeLock;
  69import android.os.SystemClock;
  70import android.preference.PreferenceManager;
  71import android.provider.ContactsContract;
  72import android.util.Log;
  73
  74public class XmppConnectionService extends Service {
  75
  76	protected static final String LOGTAG = "xmppService";
  77	public DatabaseBackend databaseBackend;
  78	private FileBackend fileBackend;
  79
  80	public long startDate;
  81
  82	private static final int PING_MAX_INTERVAL = 300;
  83	private static final int PING_MIN_INTERVAL = 10;
  84	private static final int PING_TIMEOUT = 5;
  85	private static final int CONNECT_TIMEOUT = 60;
  86	private static final long CARBON_GRACE_PERIOD = 60000L;
  87
  88	private MessageParser mMessageParser = new MessageParser(this);
  89
  90	private List<Account> accounts;
  91	private List<Conversation> conversations = null;
  92	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
  93			this);
  94
  95	private OnConversationListChangedListener convChangedListener = null;
  96	private int convChangedListenerCount = 0;
  97	private OnAccountListChangedListener accountChangedListener = null;
  98	private OnTLSExceptionReceived tlsException = null;
  99
 100	public void setOnTLSExceptionReceivedListener(
 101			OnTLSExceptionReceived listener) {
 102		tlsException = listener;
 103	}
 104
 105	private Random mRandom = new Random(System.currentTimeMillis());
 106
 107	private long lastCarbonMessageReceived = -CARBON_GRACE_PERIOD;
 108
 109	private ContentObserver contactObserver = new ContentObserver(null) {
 110		@Override
 111		public void onChange(boolean selfChange) {
 112			super.onChange(selfChange);
 113			Log.d(LOGTAG, "contact list has changed");
 114			mergePhoneContactsWithRoster(null);
 115		}
 116	};
 117
 118	private final IBinder mBinder = new XmppConnectionBinder();
 119	private OnMessagePacketReceived messageListener = new OnMessagePacketReceived() {
 120
 121		@Override
 122		public void onMessagePacketReceived(Account account,
 123				MessagePacket packet) {
 124			Message message = null;
 125			boolean notify = true;
 126			if (getPreferences().getBoolean(
 127					"notification_grace_period_after_carbon_received", true)) {
 128				notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > CARBON_GRACE_PERIOD;
 129			}
 130
 131			if ((packet.getType() == MessagePacket.TYPE_CHAT)) {
 132				String pgpBody = mMessageParser.getPgpBody(packet);
 133				if (pgpBody != null) {
 134					message = mMessageParser.parsePgpChat(pgpBody, packet,
 135							account);
 136					message.markUnread();
 137				} else if ((packet.getBody() != null)
 138						&& (packet.getBody().startsWith("?OTR"))) {
 139					message = mMessageParser.parseOtrChat(packet, account);
 140					if (message != null) {
 141						message.markUnread();
 142					}
 143				} else if (packet.hasChild("body")) {
 144					message = mMessageParser
 145							.parsePlainTextChat(packet, account);
 146					message.markUnread();
 147				} else if (packet.hasChild("received")
 148						|| (packet.hasChild("sent"))) {
 149					message = mMessageParser
 150							.parseCarbonMessage(packet, account);
 151					if (message != null) {
 152						if (message.getStatus() == Message.STATUS_SEND) {
 153							lastCarbonMessageReceived = SystemClock
 154									.elapsedRealtime();
 155							notify = false;
 156							message.getConversation().markRead();
 157						} else {
 158							message.markUnread();
 159						}
 160					}
 161				}
 162
 163			} else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
 164				message = mMessageParser.parseGroupchat(packet, account);
 165				if (message != null) {
 166					if (message.getStatus() == Message.STATUS_RECIEVED) {
 167						message.markUnread();
 168					} else {
 169						message.getConversation().markRead();
 170						notify = false;
 171					}
 172				}
 173			} else if (packet.getType() == MessagePacket.TYPE_ERROR) {
 174				mMessageParser.parseError(packet, account);
 175				return;
 176			} else if (packet.getType() == MessagePacket.TYPE_NORMAL) {
 177				if (packet.hasChild("x")) {
 178					Element x = packet.findChild("x");
 179					if (x.hasChild("invite")) {
 180						findOrCreateConversation(account, packet.getFrom(),
 181								true);
 182						if (convChangedListener != null) {
 183							convChangedListener.onConversationListChanged();
 184						}
 185						Log.d(LOGTAG,
 186								"invitation received to " + packet.getFrom());
 187					}
 188
 189				} else {
 190					// Log.d(LOGTAG, "unparsed message " + packet.toString());
 191				}
 192			}
 193			if ((message == null) || (message.getBody() == null)) {
 194				return;
 195			}
 196			if (packet.hasChild("delay")) {
 197				try {
 198					String stamp = packet.findChild("delay").getAttribute(
 199							"stamp");
 200					stamp = stamp.replace("Z", "+0000");
 201					Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
 202							.parse(stamp);
 203					message.setTime(date.getTime());
 204				} catch (ParseException e) {
 205					Log.d(LOGTAG, "error trying to parse date" + e.getMessage());
 206				}
 207			}
 208			Conversation conversation = message.getConversation();
 209			conversation.getMessages().add(message);
 210			if (packet.getType() != MessagePacket.TYPE_ERROR) {
 211				databaseBackend.createMessage(message);
 212			}
 213			if (convChangedListener != null) {
 214				convChangedListener.onConversationListChanged();
 215			} else {
 216				UIHelper.updateNotification(getApplicationContext(),
 217						getConversations(), message.getConversation(), notify);
 218			}
 219		}
 220	};
 221	private OnStatusChanged statusListener = new OnStatusChanged() {
 222
 223		@Override
 224		public void onStatusChanged(Account account) {
 225			if (accountChangedListener != null) {
 226				accountChangedListener.onAccountListChangedListener();
 227			}
 228			if (account.getStatus() == Account.STATUS_ONLINE) {
 229				List<Conversation> conversations = getConversations();
 230				for (int i = 0; i < conversations.size(); ++i) {
 231					if (conversations.get(i).getAccount() == account) {
 232						sendUnsendMessages(conversations.get(i));
 233					}
 234				}
 235				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 236			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 237				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 238					int timeToReconnect = mRandom.nextInt(50) + 10;
 239					scheduleWakeupCall(timeToReconnect, false);
 240				}
 241
 242			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 243				databaseBackend.updateAccount(account);
 244				reconnectAccount(account, true);
 245			} else if (account.getStatus() != Account.STATUS_CONNECTING) {
 246				int next = account.getXmppConnection().getTimeToNextAttempt();
 247				Log.d(LOGTAG, account.getJid()
 248						+ ": error connecting account. try again in " + next
 249						+ "s for the "
 250						+ (account.getXmppConnection().getAttempt() + 1)
 251						+ " time");
 252				scheduleWakeupCall(next, false);
 253			}
 254			UIHelper.showErrorNotification(getApplicationContext(),
 255					getAccounts());
 256		}
 257	};
 258
 259	private OnPresencePacketReceived presenceListener = new OnPresencePacketReceived() {
 260
 261		@Override
 262		public void onPresencePacketReceived(final Account account,
 263				PresencePacket packet) {
 264			if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) {
 265				Conversation muc = findMuc(
 266						packet.getAttribute("from").split("/")[0], account);
 267				if (muc != null) {
 268					muc.getMucOptions().processPacket(packet);
 269				} else {
 270					Log.d(LOGTAG, account.getJid()
 271							+ ": could not find muc for received muc package "
 272							+ packet.toString());
 273				}
 274			} else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
 275				Conversation muc = findMuc(
 276						packet.getAttribute("from").split("/")[0], account);
 277				if (muc != null) {
 278					Log.d(LOGTAG,
 279							account.getJid() + ": reading muc status packet "
 280									+ packet.toString());
 281					int error = muc.getMucOptions().getError();
 282					muc.getMucOptions().processPacket(packet);
 283					if ((muc.getMucOptions().getError() != error)
 284							&& (convChangedListener != null)) {
 285						Log.d(LOGTAG, "muc error status changed");
 286						convChangedListener.onConversationListChanged();
 287					}
 288				}
 289			} else {
 290				String[] fromParts = packet.getAttribute("from").split("/");
 291				String type = packet.getAttribute("type");
 292				if (fromParts[0].equals(account.getJid())) {
 293					if (fromParts.length == 2) {
 294						if (type == null) {
 295							account.updatePresence(fromParts[1], Presences
 296									.parseShow(packet.findChild("show")));
 297						} else if (type.equals("unavailable")) {
 298							account.removePresence(fromParts[1]);
 299						}
 300					}
 301
 302				} else {
 303					Contact contact = findContact(account, fromParts[0]);
 304					if (contact == null) {
 305						if ("subscribe".equals(type)) {
 306							account.getXmppConnection().addPendingSubscription(
 307									fromParts[0]);
 308						} else {
 309							// Log.d(LOGTAG,packet.getFrom()+
 310							// " could not be found");
 311						}
 312						return;
 313					}
 314					if (type == null) {
 315						if (fromParts.length == 2) {
 316							contact.updatePresence(fromParts[1], Presences
 317									.parseShow(packet.findChild("show")));
 318							PgpEngine pgp = getPgpEngine();
 319							if (pgp != null) {
 320								Element x = packet.findChild("x",
 321										"jabber:x:signed");
 322								if (x != null) {
 323									Element status = packet.findChild("status");
 324									String msg;
 325									if (status != null) {
 326										msg = status.getContent();
 327									} else {
 328										msg = "";
 329									}
 330									contact.setPgpKeyId(pgp.fetchKeyId(account,
 331											msg, x.getContent()));
 332									Log.d("xmppService",
 333											account.getJid()
 334													+ ": fetched key id for "
 335													+ contact.getJid()
 336													+ " was:"
 337													+ contact.getPgpKeyId());
 338								}
 339							}
 340							replaceContactInConversation(account,
 341									contact.getJid(), contact);
 342							databaseBackend.updateContact(contact, true);
 343						} else {
 344							// Log.d(LOGTAG,"presence without resource "+packet.toString());
 345						}
 346					} else if (type.equals("unavailable")) {
 347						if (fromParts.length != 2) {
 348							contact.clearPresences();
 349						} else {
 350							contact.removePresence(fromParts[1]);
 351						}
 352						replaceContactInConversation(account, contact.getJid(),
 353								contact);
 354						databaseBackend.updateContact(contact, true);
 355					} else if (type.equals("subscribe")) {
 356						Log.d(LOGTAG, "received subscribe packet from "
 357								+ packet.getFrom());
 358						if (contact
 359								.getSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT)) {
 360							Log.d(LOGTAG, "preemptive grant; granting");
 361							sendPresenceUpdatesTo(contact);
 362							contact.setSubscriptionOption(Contact.Subscription.FROM);
 363							contact.resetSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
 364							replaceContactInConversation(account,
 365									contact.getJid(), contact);
 366							databaseBackend.updateContact(contact, false);
 367							if ((contact
 368									.getSubscriptionOption(Contact.Subscription.ASKING))
 369									&& (!contact
 370											.getSubscriptionOption(Contact.Subscription.TO))) {
 371								requestPresenceUpdatesFrom(contact);
 372							}
 373						} else {
 374							account.getXmppConnection().addPendingSubscription(
 375									fromParts[0]);
 376						}
 377					} else {
 378						// Log.d(LOGTAG, packet.toString());
 379					}
 380				}
 381			}
 382		}
 383	};
 384
 385	private OnIqPacketReceived unknownIqListener = new OnIqPacketReceived() {
 386
 387		@Override
 388		public void onIqPacketReceived(Account account, IqPacket packet) {
 389			if (packet.hasChild("query", "jabber:iq:roster")) {
 390				String from = packet.getFrom();
 391				if ((from == null) || (from.equals(account.getJid()))) {
 392					Element query = packet.findChild("query");
 393					processRosterItems(account, query);
 394					mergePhoneContactsWithRoster(null);
 395				} else {
 396					Log.d(LOGTAG, "unauthorized roster push from: " + from);
 397				}
 398			} else if (packet
 399					.hasChild("open", "http://jabber.org/protocol/ibb")
 400					|| packet
 401							.hasChild("data", "http://jabber.org/protocol/ibb")) {
 402				XmppConnectionService.this.mJingleConnectionManager
 403						.deliverIbbPacket(account, packet);
 404			} else if (packet.hasChild("query",
 405					"http://jabber.org/protocol/disco#info")) {
 406				IqPacket iqResponse = packet
 407						.generateRespone(IqPacket.TYPE_RESULT);
 408				Element query = iqResponse.addChild("query",
 409						"http://jabber.org/protocol/disco#info");
 410				query.addChild("feature").setAttribute("var",
 411						"urn:xmpp:jingle:1");
 412				query.addChild("feature").setAttribute("var",
 413						"urn:xmpp:jingle:apps:file-transfer:3");
 414				query.addChild("feature").setAttribute("var",
 415						"urn:xmpp:jingle:transports:s5b:1");
 416				query.addChild("feature").setAttribute("var",
 417						"urn:xmpp:jingle:transports:ibb:1");
 418				account.getXmppConnection().sendIqPacket(iqResponse, null);
 419			} else {
 420				if ((packet.getType() == IqPacket.TYPE_GET)
 421						|| (packet.getType() == IqPacket.TYPE_SET)) {
 422					IqPacket response = packet
 423							.generateRespone(IqPacket.TYPE_ERROR);
 424					Element error = response.addChild("error");
 425					error.setAttribute("type", "cancel");
 426					error.addChild("feature-not-implemented",
 427							"urn:ietf:params:xml:ns:xmpp-stanzas");
 428					account.getXmppConnection().sendIqPacket(response, null);
 429				}
 430			}
 431		}
 432	};
 433
 434	private OnJinglePacketReceived jingleListener = new OnJinglePacketReceived() {
 435
 436		@Override
 437		public void onJinglePacketReceived(Account account, JinglePacket packet) {
 438			mJingleConnectionManager.deliverPacket(account, packet);
 439		}
 440	};
 441
 442	private OpenPgpServiceConnection pgpServiceConnection;
 443	private PgpEngine mPgpEngine = null;
 444	private Intent pingIntent;
 445	private PendingIntent pendingPingIntent = null;
 446	private WakeLock wakeLock;
 447	private PowerManager pm;
 448
 449	public PgpEngine getPgpEngine() {
 450		if (pgpServiceConnection.isBound()) {
 451			if (this.mPgpEngine == null) {
 452				this.mPgpEngine = new PgpEngine(new OpenPgpApi(
 453						getApplicationContext(),
 454						pgpServiceConnection.getService()), this);
 455			}
 456			return mPgpEngine;
 457		} else {
 458			return null;
 459		}
 460
 461	}
 462
 463	public FileBackend getFileBackend() {
 464		return this.fileBackend;
 465	}
 466
 467	public Message attachImageToConversation(final Conversation conversation,
 468			final Uri uri, final UiCallback callback) {
 469		final Message message;
 470		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 471			message = new Message(conversation, "",
 472					Message.ENCRYPTION_DECRYPTED);
 473		} else {
 474			message = new Message(conversation, "", Message.ENCRYPTION_NONE);
 475		}
 476		message.setPresence(conversation.getNextPresence());
 477		message.setType(Message.TYPE_IMAGE);
 478		message.setStatus(Message.STATUS_OFFERED);
 479		new Thread(new Runnable() {
 480
 481			@Override
 482			public void run() {
 483				try {
 484					getFileBackend().copyImageToPrivateStorage(message, uri);
 485					if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 486						getPgpEngine().encrypt(message, callback);
 487					} else {
 488						callback.success();
 489					}
 490				} catch (FileBackend.ImageCopyException e) {
 491					callback.error(e.getResId());
 492				}
 493			}
 494		}).start();
 495		return message;
 496	}
 497
 498	protected Conversation findMuc(String name, Account account) {
 499		for (Conversation conversation : this.conversations) {
 500			if (conversation.getContactJid().split("/")[0].equals(name)
 501					&& (conversation.getAccount() == account)) {
 502				return conversation;
 503			}
 504		}
 505		return null;
 506	}
 507
 508	private void processRosterItems(Account account, Element elements) {
 509		String version = elements.getAttribute("ver");
 510		if (version != null) {
 511			account.setRosterVersion(version);
 512			databaseBackend.updateAccount(account);
 513		}
 514		for (Element item : elements.getChildren()) {
 515			if (item.getName().equals("item")) {
 516				String jid = item.getAttribute("jid");
 517				String subscription = item.getAttribute("subscription");
 518				Contact contact = databaseBackend.findContact(account, jid);
 519				if (contact == null) {
 520					if (!subscription.equals("remove")) {
 521						String name = item.getAttribute("name");
 522						if (name == null) {
 523							name = jid.split("@")[0];
 524						}
 525						contact = new Contact(account, name, jid, null);
 526						contact.parseSubscriptionFromElement(item);
 527						databaseBackend.createContact(contact);
 528					}
 529				} else {
 530					if (subscription.equals("remove")) {
 531						databaseBackend.deleteContact(contact);
 532						replaceContactInConversation(account, contact.getJid(),
 533								null);
 534					} else {
 535						contact.parseSubscriptionFromElement(item);
 536						databaseBackend.updateContact(contact, false);
 537						replaceContactInConversation(account, contact.getJid(),
 538								contact);
 539					}
 540				}
 541			}
 542		}
 543	}
 544
 545	private void replaceContactInConversation(Account account, String jid,
 546			Contact contact) {
 547		List<Conversation> conversations = getConversations();
 548		for (Conversation c : conversations) {
 549			if (c.getContactJid().equals(jid) && (c.getAccount() == account)) {
 550				c.setContact(contact);
 551				break;
 552			}
 553		}
 554	}
 555
 556	public class XmppConnectionBinder extends Binder {
 557		public XmppConnectionService getService() {
 558			return XmppConnectionService.this;
 559		}
 560	}
 561
 562	@Override
 563	public int onStartCommand(Intent intent, int flags, int startId) {
 564		this.wakeLock.acquire();
 565		// Log.d(LOGTAG,"calling start service. caller was:"+intent.getAction());
 566		ConnectivityManager cm = (ConnectivityManager) getApplicationContext()
 567				.getSystemService(Context.CONNECTIVITY_SERVICE);
 568		NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
 569		boolean isConnected = activeNetwork != null
 570				&& activeNetwork.isConnected();
 571
 572		for (Account account : accounts) {
 573			if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 574				if (!isConnected) {
 575					account.setStatus(Account.STATUS_NO_INTERNET);
 576					if (statusListener != null) {
 577						statusListener.onStatusChanged(account);
 578					}
 579				} else {
 580					if (account.getStatus() == Account.STATUS_NO_INTERNET) {
 581						account.setStatus(Account.STATUS_OFFLINE);
 582						if (statusListener != null) {
 583							statusListener.onStatusChanged(account);
 584						}
 585					}
 586					if (account.getStatus() == Account.STATUS_ONLINE) {
 587						long lastReceived = account.getXmppConnection().lastPaketReceived;
 588						long lastSent = account.getXmppConnection().lastPingSent;
 589						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 590							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 591							this.reconnectAccount(account, true);
 592						} else if (SystemClock.elapsedRealtime() - lastReceived >= PING_MIN_INTERVAL * 1000) {
 593							account.getXmppConnection().sendPing();
 594							account.getXmppConnection().lastPingSent = SystemClock
 595									.elapsedRealtime();
 596							this.scheduleWakeupCall(2, false);
 597						}
 598					} else if (account.getStatus() == Account.STATUS_OFFLINE) {
 599						if (account.getXmppConnection() == null) {
 600							account.setXmppConnection(this
 601									.createConnection(account));
 602						}
 603						account.getXmppConnection().lastPingSent = SystemClock
 604								.elapsedRealtime();
 605						new Thread(account.getXmppConnection()).start();
 606					} else if ((account.getStatus() == Account.STATUS_CONNECTING)
 607							&& ((SystemClock.elapsedRealtime() - account
 608									.getXmppConnection().lastConnect) / 1000 >= CONNECT_TIMEOUT)) {
 609						Log.d(LOGTAG, account.getJid()
 610								+ ": time out during connect reconnecting");
 611						reconnectAccount(account, true);
 612					} else {
 613						if (account.getXmppConnection().getTimeToNextAttempt() <= 0) {
 614							reconnectAccount(account, true);
 615						}
 616					}
 617					// in any case. reschedule wakup call
 618					this.scheduleWakeupCall(PING_MAX_INTERVAL, true);
 619				}
 620				if (accountChangedListener != null) {
 621					accountChangedListener.onAccountListChangedListener();
 622				}
 623			}
 624		}
 625		if (wakeLock.isHeld()) {
 626			wakeLock.release();
 627		}
 628		return START_STICKY;
 629	}
 630
 631	@Override
 632	public void onCreate() {
 633		ExceptionHelper.init(getApplicationContext());
 634		this.databaseBackend = DatabaseBackend
 635				.getInstance(getApplicationContext());
 636		this.fileBackend = new FileBackend(getApplicationContext());
 637		this.accounts = databaseBackend.getAccounts();
 638
 639		this.getConversations();
 640
 641		getContentResolver().registerContentObserver(
 642				ContactsContract.Contacts.CONTENT_URI, true, contactObserver);
 643		this.pgpServiceConnection = new OpenPgpServiceConnection(
 644				getApplicationContext(), "org.sufficientlysecure.keychain");
 645		this.pgpServiceConnection.bindToService();
 646
 647		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 648		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
 649				"XmppConnectionService");
 650	}
 651
 652	@Override
 653	public void onDestroy() {
 654		Log.d(LOGTAG, "stopping service");
 655		super.onDestroy();
 656		for (Account account : accounts) {
 657			if (account.getXmppConnection() != null) {
 658				disconnect(account, true);
 659			}
 660		}
 661	}
 662
 663	protected void scheduleWakeupCall(int seconds, boolean ping) {
 664		long timeToWake = SystemClock.elapsedRealtime() + seconds * 1000;
 665		Context context = getApplicationContext();
 666		AlarmManager alarmManager = (AlarmManager) context
 667				.getSystemService(Context.ALARM_SERVICE);
 668
 669		if (ping) {
 670			if (this.pingIntent == null) {
 671				this.pingIntent = new Intent(context, EventReceiver.class);
 672				this.pingIntent.setAction("ping");
 673				this.pingIntent.putExtra("time", timeToWake);
 674				this.pendingPingIntent = PendingIntent.getBroadcast(context, 0,
 675						this.pingIntent, 0);
 676				alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 677						timeToWake, pendingPingIntent);
 678			} else {
 679				long scheduledTime = this.pingIntent.getLongExtra("time", 0);
 680				if (scheduledTime < SystemClock.elapsedRealtime()
 681						|| (scheduledTime > timeToWake)) {
 682					this.pingIntent.putExtra("time", timeToWake);
 683					alarmManager.cancel(this.pendingPingIntent);
 684					this.pendingPingIntent = PendingIntent.getBroadcast(
 685							context, 0, this.pingIntent, 0);
 686					alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
 687							timeToWake, pendingPingIntent);
 688				}
 689			}
 690		} else {
 691			Intent intent = new Intent(context, EventReceiver.class);
 692			intent.setAction("ping_check");
 693			PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0,
 694					intent, 0);
 695			alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, timeToWake,
 696					alarmIntent);
 697		}
 698
 699	}
 700
 701	public XmppConnection createConnection(Account account) {
 702		SharedPreferences sharedPref = getPreferences();
 703		account.setResource(sharedPref.getString("resource", "mobile")
 704				.toLowerCase(Locale.getDefault()));
 705		XmppConnection connection = new XmppConnection(account, this.pm);
 706		connection.setOnMessagePacketReceivedListener(this.messageListener);
 707		connection.setOnStatusChangedListener(this.statusListener);
 708		connection.setOnPresencePacketReceivedListener(this.presenceListener);
 709		connection
 710				.setOnUnregisteredIqPacketReceivedListener(this.unknownIqListener);
 711		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 712		connection
 713				.setOnTLSExceptionReceivedListener(new OnTLSExceptionReceived() {
 714
 715					@Override
 716					public void onTLSExceptionReceived(String fingerprint,
 717							Account account) {
 718						Log.d(LOGTAG, "tls exception arrived in service");
 719						if (tlsException != null) {
 720							tlsException.onTLSExceptionReceived(fingerprint,
 721									account);
 722						}
 723					}
 724				});
 725		connection.setOnBindListener(new OnBindListener() {
 726
 727			@Override
 728			public void onBind(Account account) {
 729				databaseBackend.clearPresences(account); //contact presences
 730				account.clearPresences(); // self presences
 731				updateRoster(account, null);
 732				sendPresence(account);
 733				connectMultiModeConversations(account);
 734				if (convChangedListener != null) {
 735					convChangedListener.onConversationListChanged();
 736				}
 737			}
 738		});
 739		return connection;
 740	}
 741
 742	synchronized public void sendMessage(Message message, String presence) {
 743		Account account = message.getConversation().getAccount();
 744		Conversation conv = message.getConversation();
 745		MessagePacket packet = null;
 746		boolean saveInDb = false;
 747		boolean addToConversation = false;
 748		boolean send = false;
 749		if (account.getStatus() == Account.STATUS_ONLINE) {
 750			if (message.getType() == Message.TYPE_IMAGE) {
 751				mJingleConnectionManager.createNewConnection(message);
 752			} else {
 753				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 754					if (!conv.hasValidOtrSession()) {
 755						// starting otr session. messages will be send later
 756						conv.startOtrSession(getApplicationContext(), presence,
 757								true);
 758					} else if (conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 759						// otr session aleary exists, creating message packet
 760						// accordingly
 761						packet = prepareMessagePacket(account, message,
 762								conv.getOtrSession());
 763						send = true;
 764						message.setStatus(Message.STATUS_SEND);
 765					}
 766					saveInDb = true;
 767					addToConversation = true;
 768				} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 769					message.getConversation().endOtrIfNeeded();
 770					packet = prepareMessagePacket(account, message, null);
 771					packet.setBody("This is an XEP-0027 encryted message");
 772					packet.addChild("x", "jabber:x:encrypted").setContent(
 773							message.getEncryptedBody());
 774					message.setStatus(Message.STATUS_SEND);
 775					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 776					saveInDb = true;
 777					addToConversation = true;
 778					send = true;
 779				} else {
 780					message.getConversation().endOtrIfNeeded();
 781					// don't encrypt
 782					if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 783						message.setStatus(Message.STATUS_SEND);
 784					}
 785					packet = prepareMessagePacket(account, message, null);
 786					send = true;
 787					saveInDb = true;
 788					addToConversation = true;
 789				}
 790			}
 791		} else {
 792			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 793				String pgpBody = message.getEncryptedBody();
 794				String decryptedBody = message.getBody();
 795				message.setBody(pgpBody);
 796				databaseBackend.createMessage(message);
 797				message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 798				message.setBody(decryptedBody);
 799				addToConversation = true;
 800			} else {
 801				saveInDb = true;
 802				addToConversation = true;
 803			}
 804
 805		}
 806		if (saveInDb) {
 807			databaseBackend.createMessage(message);
 808		}
 809		if (addToConversation) {
 810			conv.getMessages().add(message);
 811			if (convChangedListener != null) {
 812				convChangedListener.onConversationListChanged();
 813			}
 814		}
 815		if ((send) && (packet != null)) {
 816			account.getXmppConnection().sendMessagePacket(packet);
 817		}
 818
 819	}
 820
 821	private void sendUnsendMessages(Conversation conversation) {
 822		for (int i = 0; i < conversation.getMessages().size(); ++i) {
 823			if (conversation.getMessages().get(i).getStatus() == Message.STATUS_UNSEND) {
 824				resendMessage(conversation.getMessages().get(i));
 825			}
 826		}
 827	}
 828
 829	private void resendMessage(Message message) {
 830		Account account = message.getConversation().getAccount();
 831		MessagePacket packet = null;
 832		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 833			packet = prepareMessagePacket(account, message, null);
 834		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 835			packet = prepareMessagePacket(account, message, null);
 836			packet.setBody("This is an XEP-0027 encryted message");
 837			if (message.getEncryptedBody() == null) {
 838				markMessage(message, Message.STATUS_SEND_FAILED);
 839				return;
 840			}
 841			packet.addChild("x", "jabber:x:encrypted").setContent(
 842					message.getEncryptedBody());
 843		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 844			packet = prepareMessagePacket(account, message, null);
 845			packet.setBody("This is an XEP-0027 encryted message");
 846			packet.addChild("x", "jabber:x:encrypted").setContent(
 847					message.getBody());
 848		}
 849		if (packet != null) {
 850			account.getXmppConnection().sendMessagePacket(packet);
 851			markMessage(message, Message.STATUS_SEND);
 852		}
 853	}
 854
 855	public MessagePacket prepareMessagePacket(Account account, Message message,
 856			Session otrSession) {
 857		MessagePacket packet = new MessagePacket();
 858		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
 859			packet.setType(MessagePacket.TYPE_CHAT);
 860			if (otrSession != null) {
 861				try {
 862					packet.setBody(otrSession.transformSending(message
 863							.getBody()));
 864				} catch (OtrException e) {
 865					Log.d(LOGTAG,
 866							account.getJid()
 867									+ ": could not encrypt message to "
 868									+ message.getCounterpart());
 869				}
 870				packet.addChild("private", "urn:xmpp:carbons:2");
 871				packet.addChild("no-copy", "urn:xmpp:hints");
 872				packet.setTo(otrSession.getSessionID().getAccountID() + "/"
 873						+ otrSession.getSessionID().getUserID());
 874				packet.setFrom(account.getFullJid());
 875			} else {
 876				packet.setBody(message.getBody());
 877				packet.setTo(message.getCounterpart());
 878				packet.setFrom(account.getJid());
 879			}
 880		} else if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 881			packet.setType(MessagePacket.TYPE_GROUPCHAT);
 882			packet.setBody(message.getBody());
 883			packet.setTo(message.getCounterpart().split("/")[0]);
 884			packet.setFrom(account.getJid());
 885		}
 886		packet.setId(message.getUuid());
 887		return packet;
 888	}
 889
 890	private void getRoster(Account account,
 891			final OnRosterFetchedListener listener) {
 892		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 893		for (int i = 0; i < contacts.size(); ++i) {
 894			contacts.get(i).setAccount(account);
 895		}
 896		if (listener != null) {
 897			listener.onRosterFetched(contacts);
 898		}
 899	}
 900
 901	public List<Contact> getRoster(Account account) {
 902		List<Contact> contacts = databaseBackend.getContactsByAccount(account);
 903		for (int i = 0; i < contacts.size(); ++i) {
 904			contacts.get(i).setAccount(account);
 905		}
 906		return contacts;
 907	}
 908
 909	public void updateRoster(final Account account,
 910			final OnRosterFetchedListener listener) {
 911		IqPacket iqPacket = new IqPacket(IqPacket.TYPE_GET);
 912		if (!"".equals(account.getRosterVersion())) {
 913			Log.d(LOGTAG, account.getJid() + ": fetching roster version "
 914					+ account.getRosterVersion());
 915		} else {
 916			Log.d(LOGTAG, account.getJid() + ": fetching roster");
 917		}
 918		iqPacket.query("jabber:iq:roster").setAttribute("ver",
 919				account.getRosterVersion());
 920		account.getXmppConnection().sendIqPacket(iqPacket,
 921				new OnIqPacketReceived() {
 922
 923					@Override
 924					public void onIqPacketReceived(final Account account,
 925							IqPacket packet) {
 926						Element roster = packet.findChild("query");
 927						if (roster != null) {
 928							Log.d(LOGTAG, account.getJid()
 929									+ ": processing roster");
 930							processRosterItems(account, roster);
 931							StringBuilder mWhere = new StringBuilder();
 932							mWhere.append("jid NOT IN(");
 933							List<Element> items = roster.getChildren();
 934							for (int i = 0; i < items.size(); ++i) {
 935								mWhere.append(DatabaseUtils
 936										.sqlEscapeString(items.get(i)
 937												.getAttribute("jid")));
 938								if (i != items.size() - 1) {
 939									mWhere.append(",");
 940								}
 941							}
 942							mWhere.append(") and accountUuid = \"");
 943							mWhere.append(account.getUuid());
 944							mWhere.append("\"");
 945							List<Contact> contactsToDelete = databaseBackend
 946									.getContacts(mWhere.toString());
 947							for (Contact contact : contactsToDelete) {
 948								databaseBackend.deleteContact(contact);
 949								replaceContactInConversation(account,
 950										contact.getJid(), null);
 951							}
 952
 953						} else {
 954							Log.d(LOGTAG, account.getJid()
 955									+ ": empty roster returend");
 956						}
 957						mergePhoneContactsWithRoster(new OnPhoneContactsMerged() {
 958
 959							@Override
 960							public void phoneContactsMerged() {
 961								if (listener != null) {
 962									getRoster(account, listener);
 963								}
 964							}
 965						});
 966					}
 967				});
 968	}
 969
 970	public void mergePhoneContactsWithRoster(
 971			final OnPhoneContactsMerged listener) {
 972		PhoneHelper.loadPhoneContacts(getApplicationContext(),
 973				new OnPhoneContactsLoadedListener() {
 974					@Override
 975					public void onPhoneContactsLoaded(
 976							Hashtable<String, Bundle> phoneContacts) {
 977						List<Contact> contacts = databaseBackend
 978								.getContactsByAccount(null);
 979						for (int i = 0; i < contacts.size(); ++i) {
 980							Contact contact = contacts.get(i);
 981							if (phoneContacts.containsKey(contact.getJid())) {
 982								Bundle phoneContact = phoneContacts.get(contact
 983										.getJid());
 984								String systemAccount = phoneContact
 985										.getInt("phoneid")
 986										+ "#"
 987										+ phoneContact.getString("lookup");
 988								contact.setSystemAccount(systemAccount);
 989								contact.setPhotoUri(phoneContact
 990										.getString("photouri"));
 991								contact.setDisplayName(phoneContact
 992										.getString("displayname"));
 993								databaseBackend.updateContact(contact, false);
 994								replaceContactInConversation(
 995										contact.getAccount(), contact.getJid(),
 996										contact);
 997							} else {
 998								if ((contact.getSystemAccount() != null)
 999										|| (contact.getProfilePhoto() != null)) {
1000									contact.setSystemAccount(null);
1001									contact.setPhotoUri(null);
1002									databaseBackend.updateContact(contact,
1003											false);
1004									replaceContactInConversation(
1005											contact.getAccount(),
1006											contact.getJid(), contact);
1007								}
1008							}
1009						}
1010						if (listener != null) {
1011							listener.phoneContactsMerged();
1012						}
1013					}
1014				});
1015	}
1016
1017	public List<Conversation> getConversations() {
1018		if (this.conversations == null) {
1019			Hashtable<String, Account> accountLookupTable = new Hashtable<String, Account>();
1020			for (Account account : this.accounts) {
1021				accountLookupTable.put(account.getUuid(), account);
1022			}
1023			this.conversations = databaseBackend
1024					.getConversations(Conversation.STATUS_AVAILABLE);
1025			for (Conversation conv : this.conversations) {
1026				Account account = accountLookupTable.get(conv.getAccountUuid());
1027				conv.setAccount(account);
1028				conv.setContact(findContact(account, conv.getContactJid()));
1029				conv.setMessages(databaseBackend.getMessages(conv, 50));
1030			}
1031		}
1032		Collections.sort(this.conversations, new Comparator<Conversation>() {
1033			@Override
1034			public int compare(Conversation lhs, Conversation rhs) {
1035				return (int) (rhs.getLatestMessage().getTimeSent() - lhs
1036						.getLatestMessage().getTimeSent());
1037			}
1038		});
1039		return this.conversations;
1040	}
1041
1042	public List<Account> getAccounts() {
1043		return this.accounts;
1044	}
1045
1046	public Contact findContact(Account account, String jid) {
1047		Contact contact = databaseBackend.findContact(account, jid);
1048		if (contact != null) {
1049			contact.setAccount(account);
1050		}
1051		return contact;
1052	}
1053
1054	public Conversation findOrCreateConversation(Account account, String jid,
1055			boolean muc) {
1056		for (Conversation conv : this.getConversations()) {
1057			if ((conv.getAccount().equals(account))
1058					&& (conv.getContactJid().split("/")[0].equals(jid))) {
1059				return conv;
1060			}
1061		}
1062		Conversation conversation = databaseBackend.findConversation(account,
1063				jid);
1064		if (conversation != null) {
1065			conversation.setStatus(Conversation.STATUS_AVAILABLE);
1066			conversation.setAccount(account);
1067			if (muc) {
1068				conversation.setMode(Conversation.MODE_MULTI);
1069			} else {
1070				conversation.setMode(Conversation.MODE_SINGLE);
1071			}
1072			conversation.setMessages(databaseBackend.getMessages(conversation,
1073					50));
1074			this.databaseBackend.updateConversation(conversation);
1075			conversation.setContact(findContact(account,
1076					conversation.getContactJid()));
1077		} else {
1078			String conversationName;
1079			Contact contact = findContact(account, jid);
1080			if (contact != null) {
1081				conversationName = contact.getDisplayName();
1082			} else {
1083				conversationName = jid.split("@")[0];
1084			}
1085			if (muc) {
1086				conversation = new Conversation(conversationName, account, jid,
1087						Conversation.MODE_MULTI);
1088			} else {
1089				conversation = new Conversation(conversationName, account, jid,
1090						Conversation.MODE_SINGLE);
1091			}
1092			conversation.setContact(contact);
1093			this.databaseBackend.createConversation(conversation);
1094		}
1095		this.conversations.add(conversation);
1096		if ((account.getStatus() == Account.STATUS_ONLINE)
1097				&& (conversation.getMode() == Conversation.MODE_MULTI)) {
1098			joinMuc(conversation);
1099		}
1100		if (this.convChangedListener != null) {
1101			this.convChangedListener.onConversationListChanged();
1102		}
1103		return conversation;
1104	}
1105
1106	public void archiveConversation(Conversation conversation) {
1107		if (conversation.getMode() == Conversation.MODE_MULTI) {
1108			leaveMuc(conversation);
1109		} else {
1110			conversation.endOtrIfNeeded();
1111		}
1112		this.databaseBackend.updateConversation(conversation);
1113		this.conversations.remove(conversation);
1114		if (this.convChangedListener != null) {
1115			this.convChangedListener.onConversationListChanged();
1116		}
1117	}
1118
1119	public void clearConversationHistory(Conversation conversation) {
1120		this.databaseBackend.deleteMessagesInConversation(conversation);
1121		this.fileBackend.removeFiles(conversation);
1122		conversation.getMessages().clear();
1123		if (this.convChangedListener != null) {
1124			this.convChangedListener.onConversationListChanged();
1125		}
1126	}
1127
1128	public int getConversationCount() {
1129		return this.databaseBackend.getConversationCount();
1130	}
1131
1132	public void createAccount(Account account) {
1133		databaseBackend.createAccount(account);
1134		this.accounts.add(account);
1135		this.reconnectAccount(account, false);
1136		if (accountChangedListener != null)
1137			accountChangedListener.onAccountListChangedListener();
1138	}
1139
1140	public void deleteContact(Contact contact) {
1141		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1142		Element query = iq.query("jabber:iq:roster");
1143		query.addChild("item").setAttribute("jid", contact.getJid())
1144				.setAttribute("subscription", "remove");
1145		contact.getAccount().getXmppConnection().sendIqPacket(iq, null);
1146		replaceContactInConversation(contact.getAccount(), contact.getJid(),
1147				null);
1148		databaseBackend.deleteContact(contact);
1149	}
1150
1151	public void updateAccount(Account account) {
1152		this.statusListener.onStatusChanged(account);
1153		databaseBackend.updateAccount(account);
1154		reconnectAccount(account, false);
1155		if (accountChangedListener != null) {
1156			accountChangedListener.onAccountListChangedListener();
1157		}
1158		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1159	}
1160
1161	public void deleteAccount(Account account) {
1162		if (account.getXmppConnection() != null) {
1163			this.disconnect(account, true);
1164		}
1165		databaseBackend.deleteAccount(account);
1166		this.accounts.remove(account);
1167		if (accountChangedListener != null) {
1168			accountChangedListener.onAccountListChangedListener();
1169		}
1170		UIHelper.showErrorNotification(getApplicationContext(), getAccounts());
1171	}
1172
1173	public void setOnConversationListChangedListener(
1174			OnConversationListChangedListener listener) {
1175		this.convChangedListener = listener;
1176		this.convChangedListenerCount++;
1177	}
1178
1179	public void removeOnConversationListChangedListener() {
1180		this.convChangedListenerCount--;
1181		if (this.convChangedListenerCount == 0) {
1182			this.convChangedListener = null;
1183		}
1184	}
1185
1186	public void setOnAccountListChangedListener(
1187			OnAccountListChangedListener listener) {
1188		this.accountChangedListener = listener;
1189	}
1190
1191	public void removeOnAccountListChangedListener() {
1192		this.accountChangedListener = null;
1193	}
1194
1195	public void connectMultiModeConversations(Account account) {
1196		List<Conversation> conversations = getConversations();
1197		for (int i = 0; i < conversations.size(); i++) {
1198			Conversation conversation = conversations.get(i);
1199			if ((conversation.getMode() == Conversation.MODE_MULTI)
1200					&& (conversation.getAccount() == account)) {
1201				joinMuc(conversation);
1202			}
1203		}
1204	}
1205
1206	public void joinMuc(Conversation conversation) {
1207		String[] mucParts = conversation.getContactJid().split("/");
1208		String muc;
1209		String nick;
1210		if (mucParts.length == 2) {
1211			muc = mucParts[0];
1212			nick = mucParts[1];
1213		} else {
1214			muc = mucParts[0];
1215			nick = conversation.getAccount().getUsername();
1216		}
1217		PresencePacket packet = new PresencePacket();
1218		packet.setAttribute("to", muc + "/" + nick);
1219		Element x = new Element("x");
1220		x.setAttribute("xmlns", "http://jabber.org/protocol/muc");
1221		if (conversation.getMessages().size() != 0) {
1222			long lastMsgTime = conversation.getLatestMessage().getTimeSent();
1223			long diff = (System.currentTimeMillis() - lastMsgTime) / 1000 - 1;
1224			x.addChild("history").setAttribute("seconds", diff + "");
1225		}
1226		packet.addChild(x);
1227		conversation.getAccount().getXmppConnection()
1228				.sendPresencePacket(packet);
1229	}
1230
1231	private OnRenameListener renameListener = null;
1232
1233	public void setOnRenameListener(OnRenameListener listener) {
1234		this.renameListener = listener;
1235	}
1236
1237	public void renameInMuc(final Conversation conversation, final String nick) {
1238		final MucOptions options = conversation.getMucOptions();
1239		if (options.online()) {
1240			options.setOnRenameListener(new OnRenameListener() {
1241
1242				@Override
1243				public void onRename(boolean success) {
1244					if (renameListener != null) {
1245						renameListener.onRename(success);
1246					}
1247					if (success) {
1248						String jid = conversation.getContactJid().split("/")[0]
1249								+ "/" + nick;
1250						conversation.setContactJid(jid);
1251						databaseBackend.updateConversation(conversation);
1252					}
1253				}
1254			});
1255			options.flagAboutToRename();
1256			PresencePacket packet = new PresencePacket();
1257			packet.setAttribute("to",
1258					conversation.getContactJid().split("/")[0] + "/" + nick);
1259			packet.setAttribute("from", conversation.getAccount().getFullJid());
1260
1261			conversation.getAccount().getXmppConnection()
1262					.sendPresencePacket(packet, null);
1263		} else {
1264			String jid = conversation.getContactJid().split("/")[0] + "/"
1265					+ nick;
1266			conversation.setContactJid(jid);
1267			databaseBackend.updateConversation(conversation);
1268			if (conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
1269				joinMuc(conversation);
1270			}
1271		}
1272	}
1273
1274	public void leaveMuc(Conversation conversation) {
1275		PresencePacket packet = new PresencePacket();
1276		packet.setAttribute("to", conversation.getContactJid().split("/")[0]
1277				+ "/" + conversation.getMucOptions().getNick());
1278		packet.setAttribute("from", conversation.getAccount().getFullJid());
1279		packet.setAttribute("type", "unavailable");
1280		Log.d(LOGTAG, "send leaving muc " + packet);
1281		conversation.getAccount().getXmppConnection()
1282				.sendPresencePacket(packet);
1283		conversation.getMucOptions().setOffline();
1284	}
1285
1286	public void disconnect(Account account, boolean force) {
1287		if ((account.getStatus() == Account.STATUS_ONLINE)
1288				|| (account.getStatus() == Account.STATUS_DISABLED)) {
1289			if (!force) {
1290				List<Conversation> conversations = getConversations();
1291				for (int i = 0; i < conversations.size(); i++) {
1292					Conversation conversation = conversations.get(i);
1293					if (conversation.getAccount() == account) {
1294						if (conversation.getMode() == Conversation.MODE_MULTI) {
1295							leaveMuc(conversation);
1296						} else {
1297							conversation.endOtrIfNeeded();
1298						}
1299					}
1300				}
1301			}
1302			account.getXmppConnection().disconnect(force);
1303		}
1304	}
1305
1306	@Override
1307	public IBinder onBind(Intent intent) {
1308		return mBinder;
1309	}
1310
1311	public void updateContact(Contact contact) {
1312		databaseBackend.updateContact(contact, false);
1313		replaceContactInConversation(contact.getAccount(), contact.getJid(),
1314				contact);
1315	}
1316
1317	public void updateMessage(Message message) {
1318		databaseBackend.updateMessage(message);
1319	}
1320
1321	public void createContact(Contact contact) {
1322		SharedPreferences sharedPref = getPreferences();
1323		boolean autoGrant = sharedPref.getBoolean("grant_new_contacts", true);
1324		if (autoGrant) {
1325			contact.setSubscriptionOption(Contact.Subscription.PREEMPTIVE_GRANT);
1326			contact.setSubscriptionOption(Contact.Subscription.ASKING);
1327		}
1328		databaseBackend.createContact(contact);
1329		IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
1330		Element query = new Element("query");
1331		query.setAttribute("xmlns", "jabber:iq:roster");
1332		Element item = new Element("item");
1333		item.setAttribute("jid", contact.getJid());
1334		item.setAttribute("name", contact.getJid());
1335		query.addChild(item);
1336		iq.addChild(query);
1337		Account account = contact.getAccount();
1338		account.getXmppConnection().sendIqPacket(iq, null);
1339		if (autoGrant) {
1340			requestPresenceUpdatesFrom(contact);
1341			if (account.getXmppConnection().hasPendingSubscription(
1342					contact.getJid())) {
1343				Log.d("xmppService", "contact had pending subscription");
1344				sendPresenceUpdatesTo(contact);
1345			}
1346		}
1347		replaceContactInConversation(contact.getAccount(), contact.getJid(),
1348				contact);
1349	}
1350
1351	public void requestPresenceUpdatesFrom(Contact contact) {
1352		// Requesting a Subscription type=subscribe
1353		PresencePacket packet = new PresencePacket();
1354		packet.setAttribute("type", "subscribe");
1355		packet.setAttribute("to", contact.getJid());
1356		packet.setAttribute("from", contact.getAccount().getJid());
1357		Log.d(LOGTAG, packet.toString());
1358		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1359	}
1360
1361	public void stopPresenceUpdatesFrom(Contact contact) {
1362		// Unsubscribing type='unsubscribe'
1363		PresencePacket packet = new PresencePacket();
1364		packet.setAttribute("type", "unsubscribe");
1365		packet.setAttribute("to", contact.getJid());
1366		packet.setAttribute("from", contact.getAccount().getJid());
1367		Log.d(LOGTAG, packet.toString());
1368		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1369	}
1370
1371	public void stopPresenceUpdatesTo(Contact contact) {
1372		// Canceling a Subscription type=unsubscribed
1373		PresencePacket packet = new PresencePacket();
1374		packet.setAttribute("type", "unsubscribed");
1375		packet.setAttribute("to", contact.getJid());
1376		packet.setAttribute("from", contact.getAccount().getJid());
1377		Log.d(LOGTAG, packet.toString());
1378		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1379	}
1380
1381	public void sendPresenceUpdatesTo(Contact contact) {
1382		// type='subscribed'
1383		PresencePacket packet = new PresencePacket();
1384		packet.setAttribute("type", "subscribed");
1385		packet.setAttribute("to", contact.getJid());
1386		packet.setAttribute("from", contact.getAccount().getJid());
1387		Log.d(LOGTAG, packet.toString());
1388		contact.getAccount().getXmppConnection().sendPresencePacket(packet);
1389	}
1390
1391	public void sendPresence(Account account) {
1392		PresencePacket packet = new PresencePacket();
1393		packet.setAttribute("from", account.getFullJid());
1394		String sig = account.getPgpSignature();
1395		if (sig!=null) {
1396			packet.addChild("status").setContent("online");
1397			packet.addChild("x","jabber:x:signed").setContent(sig);
1398		}
1399		Log.d(LOGTAG,packet.toString());
1400		account.getXmppConnection().sendPresencePacket(packet);
1401	}
1402
1403	public void updateConversation(Conversation conversation) {
1404		this.databaseBackend.updateConversation(conversation);
1405	}
1406
1407	public Contact findContact(String uuid) {
1408		Contact contact = this.databaseBackend.getContact(uuid);
1409		if (contact != null) {
1410			for (Account account : getAccounts()) {
1411				if (contact.getAccountUuid().equals(account.getUuid())) {
1412					contact.setAccount(account);
1413				}
1414			}
1415		}
1416		return contact;
1417	}
1418
1419	public void removeOnTLSExceptionReceivedListener() {
1420		this.tlsException = null;
1421	}
1422
1423	public void reconnectAccount(final Account account, final boolean force) {
1424		new Thread(new Runnable() {
1425
1426			@Override
1427			public void run() {
1428				if (account.getXmppConnection() != null) {
1429					disconnect(account, force);
1430				}
1431				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
1432					if (account.getXmppConnection() == null) {
1433						account.setXmppConnection(createConnection(account));
1434					}
1435					Thread thread = new Thread(account.getXmppConnection());
1436					thread.start();
1437					scheduleWakeupCall((int) (CONNECT_TIMEOUT * 1.2), false);
1438				}
1439			}
1440		}).start();
1441	}
1442
1443	public void sendConversationSubject(Conversation conversation,
1444			String subject) {
1445		MessagePacket packet = new MessagePacket();
1446		packet.setType(MessagePacket.TYPE_GROUPCHAT);
1447		packet.setTo(conversation.getContactJid().split("/")[0]);
1448		Element subjectChild = new Element("subject");
1449		subjectChild.setContent(subject);
1450		packet.addChild(subjectChild);
1451		packet.setFrom(conversation.getAccount().getJid());
1452		Account account = conversation.getAccount();
1453		if (account.getStatus() == Account.STATUS_ONLINE) {
1454			account.getXmppConnection().sendMessagePacket(packet);
1455		}
1456	}
1457
1458	public void inviteToConference(Conversation conversation,
1459			List<Contact> contacts) {
1460		for (Contact contact : contacts) {
1461			MessagePacket packet = new MessagePacket();
1462			packet.setTo(conversation.getContactJid().split("/")[0]);
1463			packet.setFrom(conversation.getAccount().getFullJid());
1464			Element x = new Element("x");
1465			x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
1466			Element invite = new Element("invite");
1467			invite.setAttribute("to", contact.getJid());
1468			x.addChild(invite);
1469			packet.addChild(x);
1470			Log.d(LOGTAG, packet.toString());
1471			conversation.getAccount().getXmppConnection()
1472					.sendMessagePacket(packet);
1473		}
1474
1475	}
1476
1477	public boolean markMessage(Account account, String recipient, String uuid,
1478			int status) {
1479		for (Conversation conversation : getConversations()) {
1480			if (conversation.getContactJid().equals(recipient)
1481					&& conversation.getAccount().equals(account)) {
1482				return markMessage(conversation, uuid, status);
1483			}
1484		}
1485		return false;
1486	}
1487
1488	public boolean markMessage(Conversation conversation, String uuid,
1489			int status) {
1490		for (Message message : conversation.getMessages()) {
1491			if (message.getUuid().equals(uuid)) {
1492				markMessage(message, status);
1493				return true;
1494			}
1495		}
1496		return false;
1497	}
1498
1499	public void markMessage(Message message, int status) {
1500		message.setStatus(status);
1501		databaseBackend.updateMessage(message);
1502		if (convChangedListener != null) {
1503			convChangedListener.onConversationListChanged();
1504		}
1505	}
1506
1507	public SharedPreferences getPreferences() {
1508		return PreferenceManager
1509				.getDefaultSharedPreferences(getApplicationContext());
1510	}
1511
1512	public void updateUi(Conversation conversation, boolean notify) {
1513		if (convChangedListener != null) {
1514			convChangedListener.onConversationListChanged();
1515		} else {
1516			UIHelper.updateNotification(getApplicationContext(),
1517					getConversations(), conversation, notify);
1518		}
1519	}
1520}