XmppConnectionService.java

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