renaming eu.siacs.conversations to de.thedevstack.conversationsplus

 "renaming eu.siacs.conversations to de.thedevstack.conversationsplus"

package renaming completed

1 files changed, 0 insertions, 1125 deletions

diff --git a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
deleted file mode 100644
index 48dc2150..00000000
--- a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
+++ /dev/null
@@ -1,1125 +0,0 @@
-package eu.siacs.conversations.xmpp;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.os.Bundle;
-import android.os.Parcelable;
-import android.os.PowerManager;
-import android.os.PowerManager.WakeLock;
-import android.os.SystemClock;
-import android.preference.PreferenceManager;
-import android.util.Log;
-import android.util.Pair;
-import android.util.SparseArray;
-
-import org.apache.http.conn.ssl.StrictHostnameVerifier;
-import org.json.JSONException;
-import org.json.JSONObject;
-import org.xmlpull.v1.XmlPullParserException;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.math.BigInteger;
-import java.net.ConnectException;
-import java.net.IDN;
-import java.net.InetAddress;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-import java.net.UnknownHostException;
-import java.security.KeyManagementException;
-import java.security.NoSuchAlgorithmException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Hashtable;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-
-import javax.net.ssl.HostnameVerifier;
-import javax.net.ssl.SSLContext;
-import javax.net.ssl.SSLSocket;
-import javax.net.ssl.SSLSocketFactory;
-import javax.net.ssl.X509TrustManager;
-
-import eu.siacs.conversations.Config;
-import eu.siacs.conversations.crypto.sasl.DigestMd5;
-import eu.siacs.conversations.crypto.sasl.Plain;
-import eu.siacs.conversations.crypto.sasl.SaslMechanism;
-import eu.siacs.conversations.crypto.sasl.ScramSha1;
-import eu.siacs.conversations.entities.Account;
-import eu.siacs.conversations.generator.IqGenerator;
-import eu.siacs.conversations.services.XmppConnectionService;
-import eu.siacs.conversations.utils.CryptoHelper;
-import eu.siacs.conversations.utils.DNSHelper;
-import eu.siacs.conversations.utils.Xmlns;
-import eu.siacs.conversations.xml.Element;
-import eu.siacs.conversations.xml.Tag;
-import eu.siacs.conversations.xml.TagWriter;
-import eu.siacs.conversations.xml.XmlReader;
-import eu.siacs.conversations.xmpp.jid.InvalidJidException;
-import eu.siacs.conversations.xmpp.jid.Jid;
-import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
-import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
-import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
-import eu.siacs.conversations.xmpp.stanzas.IqPacket;
-import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
-import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
-import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
-import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
-import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
-import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
-import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
-import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
-
-public class XmppConnection implements Runnable {
-
-	private static final int PACKET_IQ = 0;
-	private static final int PACKET_MESSAGE = 1;
-	private static final int PACKET_PRESENCE = 2;
-	private final Context applicationContext;
-	protected Account account;
-	private final WakeLock wakeLock;
-	private Socket socket;
-	private XmlReader tagReader;
-	private TagWriter tagWriter;
-	private final Features features = new Features(this);
-	private boolean shouldBind = true;
-	private boolean shouldAuthenticate = true;
-	private Element streamFeatures;
-	private final HashMap<String, List<String>> disco = new HashMap<>();
-
-	private String streamId = null;
-	private int smVersion = 3;
-	private final SparseArray<String> messageReceipts = new SparseArray<>();
-
-	private int stanzasReceived = 0;
-	private int stanzasSent = 0;
-	private long lastPacketReceived = 0;
-	private long lastPingSent = 0;
-	private long lastConnect = 0;
-	private long lastSessionStarted = 0;
-	private int attempt = 0;
-	private final Map<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
-	private OnPresencePacketReceived presenceListener = null;
-	private OnJinglePacketReceived jingleListener = null;
-	private OnIqPacketReceived unregisteredIqListener = null;
-	private OnMessagePacketReceived messageListener = null;
-	private OnStatusChanged statusListener = null;
-	private OnBindListener bindListener = null;
-	private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
-	private OnMessageAcknowledged acknowledgedListener = null;
-	private XmppConnectionService mXmppConnectionService = null;
-
-	private SaslMechanism saslMechanism;
-
-	public XmppConnection(final Account account, final XmppConnectionService service) {
-		this.account = account;
-		this.wakeLock = service.getPowerManager().newWakeLock(
-				PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
-		tagWriter = new TagWriter();
-		mXmppConnectionService = service;
-		applicationContext = service.getApplicationContext();
-	}
-
-	protected void changeStatus(final Account.State nextStatus) {
-		if (account.getStatus() != nextStatus) {
-			if ((nextStatus == Account.State.OFFLINE)
-					&& (account.getStatus() != Account.State.CONNECTING)
-					&& (account.getStatus() != Account.State.ONLINE)
-					&& (account.getStatus() != Account.State.DISABLED)) {
-				return;
-					}
-			if (nextStatus == Account.State.ONLINE) {
-				this.attempt = 0;
-			}
-			account.setStatus(nextStatus);
-			if (statusListener != null) {
-				statusListener.onStatusChanged(account);
-			}
-		}
-	}
-
-	protected void connect() {
-		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
-		features.encryptionEnabled = false;
-		lastConnect = SystemClock.elapsedRealtime();
-		lastPingSent = SystemClock.elapsedRealtime();
-		this.attempt++;
-		try {
-			shouldAuthenticate = shouldBind = !account.isOptionSet(Account.OPTION_REGISTER);
-			tagReader = new XmlReader(wakeLock);
-			tagWriter = new TagWriter();
-			packetCallbacks.clear();
-			this.changeStatus(Account.State.CONNECTING);
-			final Bundle result = DNSHelper.getSRVRecord(account.getServer());
-			final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
-			if ("timeout".equals(result.getString("error"))) {
-				throw new IOException("timeout in dns");
-			} else if (values != null) {
-				int i = 0;
-				boolean socketError = true;
-				while (socketError && values.size() > i) {
-					final Bundle namePort = (Bundle) values.get(i);
-					try {
-						String srvRecordServer;
-						try {
-							srvRecordServer=IDN.toASCII(namePort.getString("name"));
-						} catch (final IllegalArgumentException e) {
-							// TODO: Handle me?`
-							srvRecordServer = "";
-						}
-						final int srvRecordPort = namePort.getInt("port");
-						final String srvIpServer = namePort.getString("ip");
-						final InetSocketAddress addr;
-						if (srvIpServer != null) {
-							addr = new InetSocketAddress(srvIpServer, srvRecordPort);
-							Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-									+ ": using values from dns " + srvRecordServer
-									+ "[" + srvIpServer + "]:" + srvRecordPort);
-						} else {
-							addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
-							Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-									+ ": using values from dns "
-									+ srvRecordServer + ":" + srvRecordPort);
-						}
-						socket = new Socket();
-						socket.connect(addr, 20000);
-						socketError = false;
-					} catch (final UnknownHostException e) {
-						Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
-						i++;
-					} catch (final IOException e) {
-						Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
-						i++;
-					}
-				}
-				if (socketError) {
-					throw new UnknownHostException();
-				}
-			} else if (result.containsKey("error")
-					&& "nosrv".equals(result.getString("error", null))) {
-				socket = new Socket(account.getServer().getDomainpart(), 5222);
-			} else {
-				throw new IOException("timeout in dns");
-			}
-			final OutputStream out = socket.getOutputStream();
-			tagWriter.setOutputStream(out);
-			final InputStream in = socket.getInputStream();
-			tagReader.setInputStream(in);
-			tagWriter.beginDocument();
-			sendStartStream();
-			Tag nextTag;
-			while ((nextTag = tagReader.readTag()) != null) {
-				if (nextTag.isStart("stream")) {
-					processStream(nextTag);
-					break;
-				} else {
-					throw new IOException("unknown tag on connect");
-				}
-			}
-			if (socket.isConnected()) {
-				socket.close();
-			}
-		} catch (final UnknownHostException | ConnectException e) {
-			this.changeStatus(Account.State.SERVER_NOT_FOUND);
-		} catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
-			Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
-			this.changeStatus(Account.State.OFFLINE);
-			this.attempt--; //don't count attempt when reconnecting instantly anyway
-		} finally {
-			if (wakeLock.isHeld()) {
-				try {
-					wakeLock.release();
-				} catch (final RuntimeException ignored) {
-				}
-			}
-		}
-	}
-
-	@Override
-	public void run() {
-		try {
-			if (socket != null) {
-				socket.close();
-			}
-		} catch (final IOException ignored) {
-
-		}
-		connect();
-	}
-
-	private void processStream(final Tag currentTag) throws XmlPullParserException,
-					IOException, NoSuchAlgorithmException {
-						Tag nextTag = tagReader.readTag();
-
-						while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
-							if (nextTag.isStart("error")) {
-								processStreamError(nextTag);
-							} else if (nextTag.isStart("features")) {
-								processStreamFeatures(nextTag);
-							} else if (nextTag.isStart("proceed")) {
-								switchOverToTls(nextTag);
-							} else if (nextTag.isStart("success")) {
-								final String challenge = tagReader.readElement(nextTag).getContent();
-								try {
-									saslMechanism.getResponse(challenge);
-								} catch (final SaslMechanism.AuthenticationException e) {
-									disconnect(true);
-									Log.e(Config.LOGTAG, String.valueOf(e));
-								}
-								Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
-								account.setKey(Account.PINNED_MECHANISM_KEY,
-										String.valueOf(saslMechanism.getPriority()));
-								tagReader.reset();
-								sendStartStream();
-								processStream(tagReader.readTag());
-								break;
-							} else if (nextTag.isStart("failure")) {
-								tagReader.readElement(nextTag);
-								changeStatus(Account.State.UNAUTHORIZED);
-							} else if (nextTag.isStart("challenge")) {
-								final String challenge = tagReader.readElement(nextTag).getContent();
-								final Element response = new Element("response");
-								response.setAttribute("xmlns",
-										"urn:ietf:params:xml:ns:xmpp-sasl");
-								try {
-									response.setContent(saslMechanism.getResponse(challenge));
-								} catch (final SaslMechanism.AuthenticationException e) {
-									// TODO: Send auth abort tag.
-									Log.e(Config.LOGTAG, e.toString());
-								}
-								tagWriter.writeElement(response);
-							} else if (nextTag.isStart("enabled")) {
-								final Element enabled = tagReader.readElement(nextTag);
-								if ("true".equals(enabled.getAttribute("resume"))) {
-									this.streamId = enabled.getAttribute("id");
-									Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-											+ ": stream managment(" + smVersion
-											+ ") enabled (resumable)");
-								} else {
-									Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-											+ ": stream managment(" + smVersion + ") enabled");
-								}
-								this.lastSessionStarted = SystemClock.elapsedRealtime();
-								this.stanzasReceived = 0;
-								final RequestPacket r = new RequestPacket(smVersion);
-								tagWriter.writeStanzaAsync(r);
-							} else if (nextTag.isStart("resumed")) {
-								lastPacketReceived = SystemClock.elapsedRealtime();
-								final Element resumed = tagReader.readElement(nextTag);
-								final String h = resumed.getAttribute("h");
-								try {
-									final int serverCount = Integer.parseInt(h);
-									if (serverCount != stanzasSent) {
-										Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-												+ ": session resumed with lost packages");
-										stanzasSent = serverCount;
-									} else {
-										Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-												+ ": session resumed");
-									}
-									if (acknowledgedListener != null) {
-										for (int i = 0; i < messageReceipts.size(); ++i) {
-											if (serverCount >= messageReceipts.keyAt(i)) {
-												acknowledgedListener.onMessageAcknowledged(
-														account, messageReceipts.valueAt(i));
-											}
-										}
-									}
-									messageReceipts.clear();
-								} catch (final NumberFormatException ignored) {
-								}
-								sendServiceDiscoveryInfo(account.getServer());
-								sendServiceDiscoveryItems(account.getServer());
-								sendInitialPing();
-							} else if (nextTag.isStart("r")) {
-								tagReader.readElement(nextTag);
-								final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
-								tagWriter.writeStanzaAsync(ack);
-							} else if (nextTag.isStart("a")) {
-								final Element ack = tagReader.readElement(nextTag);
-								lastPacketReceived = SystemClock.elapsedRealtime();
-								final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
-								final String msgId = this.messageReceipts.get(serverSequence);
-								if (msgId != null) {
-									if (this.acknowledgedListener != null) {
-										this.acknowledgedListener.onMessageAcknowledged(
-												account, msgId);
-									}
-									this.messageReceipts.remove(serverSequence);
-								}
-							} else if (nextTag.isStart("failed")) {
-								tagReader.readElement(nextTag);
-								Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
-								streamId = null;
-								if (account.getStatus() != Account.State.ONLINE) {
-									sendBindRequest();
-								}
-							} else if (nextTag.isStart("iq")) {
-								processIq(nextTag);
-							} else if (nextTag.isStart("message")) {
-								processMessage(nextTag);
-							} else if (nextTag.isStart("presence")) {
-								processPresence(nextTag);
-							}
-							nextTag = tagReader.readTag();
-						}
-						if (account.getStatus() == Account.State.ONLINE) {
-							account. setStatus(Account.State.OFFLINE);
-							if (statusListener != null) {
-								statusListener.onStatusChanged(account);
-							}
-						}
-	}
-
-	private void sendInitialPing() {
-		Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": sending intial ping");
-		final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
-		iq.setFrom(account.getJid());
-		iq.addChild("ping", "urn:xmpp:ping");
-		this.sendIqPacket(iq, new OnIqPacketReceived() {
-			@Override
-			public void onIqPacketReceived(final Account account, final IqPacket packet) {
-				Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
-						+ ": online with resource " + account.getResource());
-				changeStatus(Account.State.ONLINE);
-			}
-		});
-	}
-
-	private Element processPacket(final Tag currentTag, final int packetType)
-		throws XmlPullParserException, IOException {
-		Element element;
-		switch (packetType) {
-			case PACKET_IQ:
-				element = new IqPacket();
-				break;
-			case PACKET_MESSAGE:
-				element = new MessagePacket();
-				break;
-			case PACKET_PRESENCE:
-				element = new PresencePacket();
-				break;
-			default:
-				return null;
-		}
-		element.setAttributes(currentTag.getAttributes());
-		Tag nextTag = tagReader.readTag();
-		if (nextTag == null) {
-			throw new IOException("interrupted mid tag");
-		}
-		while (!nextTag.isEnd(element.getName())) {
-			if (!nextTag.isNo()) {
-				final Element child = tagReader.readElement(nextTag);
-				final String type = currentTag.getAttribute("type");
-				if (packetType == PACKET_IQ
-						&& "jingle".equals(child.getName())
-						&& ("set".equalsIgnoreCase(type) || "get"
-							.equalsIgnoreCase(type))) {
-					element = new JinglePacket();
-					element.setAttributes(currentTag.getAttributes());
-							}
-				element.addChild(child);
-			}
-			nextTag = tagReader.readTag();
-			if (nextTag == null) {
-				throw new IOException("interrupted mid tag");
-			}
-		}
-		++stanzasReceived;
-		lastPacketReceived = SystemClock.elapsedRealtime();
-		return element;
-	}
-
-	private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
-		final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
-
-		if (packet.getId() == null) {
-			return; // an iq packet without id is definitely invalid
-		}
-
-		if (packet instanceof JinglePacket) {
-			if (this.jingleListener != null) {
-				this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
-			}
-		} else {
-			if (packetCallbacks.containsKey(packet.getId())) {
-				final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
-				// Packets to the server should have responses from the server
-				if (packetCallbackDuple.first.toServer(account)) {
-					if (packet.fromServer(account)) {
-						packetCallbackDuple.second.onIqPacketReceived(account, packet);
-						packetCallbacks.remove(packet.getId());
-					} else {
-						Log.e(Config.LOGTAG,account.getJid().toBareJid().toString()+": ignoring spoofed iq packet");
-					}
-				} else {
-					if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
-						packetCallbackDuple.second.onIqPacketReceived(account, packet);
-						packetCallbacks.remove(packet.getId());
-					} else {
-						Log.e(Config.LOGTAG,account.getJid().toBareJid().toString()+": ignoring spoofed iq packet");
-					}
-				}
-			} else if (packet.getType() == IqPacket.TYPE.GET|| packet.getType() == IqPacket.TYPE.SET) {
-				this.unregisteredIqListener.onIqPacketReceived(account, packet);
-			}
-		}
-	}
-
-	private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
-		final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
-		this.messageListener.onMessagePacketReceived(account, packet);
-	}
-
-	private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
-		PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
-		this.presenceListener.onPresencePacketReceived(account, packet);
-	}
-
-	private void sendStartTLS() throws IOException {
-		final Tag startTLS = Tag.empty("starttls");
-		startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
-		tagWriter.writeTag(startTLS);
-	}
-
-	private SharedPreferences getPreferences() {
-		return PreferenceManager.getDefaultSharedPreferences(applicationContext);
-	}
-
-	private boolean enableLegacySSL() {
-		return getPreferences().getBoolean("enable_legacy_ssl", false);
-	}
-
-	private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
-		tagReader.readTag();
-		try {
-			final SSLContext sc = SSLContext.getInstance("TLS");
-			sc.init(null,new X509TrustManager[]{this.mXmppConnectionService.getMemorizingTrustManager()},mXmppConnectionService.getRNG());
-			final SSLSocketFactory factory = sc.getSocketFactory();
-			final HostnameVerifier verifier = this.mXmppConnectionService.getMemorizingTrustManager().wrapHostnameVerifier(new StrictHostnameVerifier());
-			final InetAddress address = socket == null ? null : socket.getInetAddress();
-
-			if (factory == null || address == null || verifier == null) {
-				throw new IOException("could not setup ssl");
-			}
-
-			final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
-
-			if (sslSocket == null) {
-				throw new IOException("could not initialize ssl socket");
-			}
-
-			final String[] supportProtocols;
-			final Collection<String> supportedProtocols = new LinkedList<>(
-					Arrays.asList(sslSocket.getSupportedProtocols()));
-			supportedProtocols.remove("SSLv3");
-			supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
-
-			sslSocket.setEnabledProtocols(supportProtocols);
-
-			final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
-					sslSocket.getSupportedCipherSuites());
-			//Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
-			if (cipherSuites.length > 0) {
-				sslSocket.setEnabledCipherSuites(cipherSuites);
-			}
-
-			if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
-				Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
-				disconnect(true);
-				changeStatus(Account.State.SECURITY_ERROR);
-			}
-			tagReader.setInputStream(sslSocket.getInputStream());
-			tagWriter.setOutputStream(sslSocket.getOutputStream());
-			sendStartStream();
-			Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
-			features.encryptionEnabled = true;
-			processStream(tagReader.readTag());
-			sslSocket.close();
-		} catch (final NoSuchAlgorithmException | KeyManagementException e1) {
-			Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
-			disconnect(true);
-			changeStatus(Account.State.SECURITY_ERROR);
-		}
-	}
-
-	private void processStreamFeatures(final Tag currentTag)
-		throws XmlPullParserException, IOException {
-		this.streamFeatures = tagReader.readElement(currentTag);
-		if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
-			sendStartTLS();
-		} else if (this.streamFeatures.hasChild("register")
-				&& account.isOptionSet(Account.OPTION_REGISTER)
-				&& features.encryptionEnabled) {
-			sendRegistryRequest();
-		} else if (!this.streamFeatures.hasChild("register")
-				&& account.isOptionSet(Account.OPTION_REGISTER)) {
-			changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
-			disconnect(true);
-		} else if (this.streamFeatures.hasChild("mechanisms")
-				&& shouldAuthenticate && features.encryptionEnabled) {
-			final List<String> mechanisms = extractMechanisms(streamFeatures
-					.findChild("mechanisms"));
-			final Element auth = new Element("auth");
-			auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
-			if (mechanisms.contains("SCRAM-SHA-1")) {
-				saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
-			} else if (mechanisms.contains("PLAIN")) {
-				saslMechanism = new Plain(tagWriter, account);
-			} else if (mechanisms.contains("DIGEST-MD5")) {
-				saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
-			}
-			final JSONObject keys = account.getKeys();
-			try {
-				if (keys.has(Account.PINNED_MECHANISM_KEY) &&
-						keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority() ) {
-					Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
-							" has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
-							") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
-							"). Possible downgrade attack?");
-					disconnect(true);
-					changeStatus(Account.State.SECURITY_ERROR);
-						}
-			} catch (final JSONException e) {
-				Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
-			}
-			Log.d(Config.LOGTAG,account.getJid().toString()+": Authenticating with " + saslMechanism.getMechanism());
-			auth.setAttribute("mechanism", saslMechanism.getMechanism());
-			if (!saslMechanism.getClientFirstMessage().isEmpty()) {
-				auth.setContent(saslMechanism.getClientFirstMessage());
-			}
-			tagWriter.writeElement(auth);
-		} else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
-					+ smVersion)
-				&& streamId != null) {
-			final ResumePacket resume = new ResumePacket(this.streamId,
-					stanzasReceived, smVersion);
-			this.tagWriter.writeStanzaAsync(resume);
-		} else if (this.streamFeatures.hasChild("bind") && shouldBind) {
-			sendBindRequest();
-		} else {
-			disconnect(true);
-			changeStatus(Account.State.INCOMPATIBLE_SERVER);
-		}
-	}
-
-	private List<String> extractMechanisms(final Element stream) {
-		final ArrayList<String> mechanisms = new ArrayList<>(stream
-				.getChildren().size());
-		for (final Element child : stream.getChildren()) {
-			mechanisms.add(child.getContent());
-		}
-		return mechanisms;
-	}
-
-	private void sendRegistryRequest() {
-		final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
-		register.query("jabber:iq:register");
-		register.setTo(account.getServer());
-		sendIqPacket(register, new OnIqPacketReceived() {
-
-			@Override
-			public void onIqPacketReceived(final Account account, final IqPacket packet) {
-				final Element instructions = packet.query().findChild("instructions");
-				if (packet.query().hasChild("username")
-						&& (packet.query().hasChild("password"))) {
-					final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
-					final Element username = new Element("username")
-						.setContent(account.getUsername());
-					final Element password = new Element("password")
-						.setContent(account.getPassword());
-					register.query("jabber:iq:register").addChild(username);
-					register.query().addChild(password);
-					sendIqPacket(register, new OnIqPacketReceived() {
-
-						@Override
-						public void onIqPacketReceived(final Account account, final IqPacket packet) {
-							if (packet.getType() == IqPacket.TYPE.RESULT) {
-								account.setOption(Account.OPTION_REGISTER,
-										false);
-								changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
-							} else if (packet.hasChild("error")
-									&& (packet.findChild("error")
-										.hasChild("conflict"))) {
-								changeStatus(Account.State.REGISTRATION_CONFLICT);
-							} else {
-								changeStatus(Account.State.REGISTRATION_FAILED);
-								Log.d(Config.LOGTAG, packet.toString());
-							}
-							disconnect(true);
-						}
-					});
-				} else {
-					changeStatus(Account.State.REGISTRATION_FAILED);
-					disconnect(true);
-					Log.d(Config.LOGTAG, account.getJid().toBareJid()
-							+ ": could not register. instructions are"
-							+ instructions.getContent());
-				}
-			}
-		});
-	}
-
-	private void sendBindRequest() {
-		while(!mXmppConnectionService.areMessagesInitialized()) {
-			try {
-				Thread.sleep(500);
-			} catch (final InterruptedException ignored) {
-			}
-		}
-		final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
-		iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
-			.addChild("resource").setContent(account.getResource());
-		this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
-			@Override
-			public void onIqPacketReceived(final Account account, final IqPacket packet) {
-				final Element bind = packet.findChild("bind");
-				if (bind != null) {
-					final Element jid = bind.findChild("jid");
-					if (jid != null && jid.getContent() != null) {
-						try {
-							account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
-						} catch (final InvalidJidException e) {
-							// TODO: Handle the case where an external JID is technically invalid?
-						}
-						if (streamFeatures.hasChild("session")) {
-							sendStartSession();
-						} else {
-							sendPostBindInitialization();
-						}
-					} else {
-						disconnect(true);
-					}
-				} else {
-					disconnect(true);
-				}
-			}
-		});
-	}
-
-	private void sendStartSession() {
-		final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
-		startSession.addChild("session","urn:ietf:params:xml:ns:xmpp-session");
-		this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
-			@Override
-			public void onIqPacketReceived(Account account, IqPacket packet) {
-				if (packet.getType() == IqPacket.TYPE.RESULT) {
-					sendPostBindInitialization();
-				} else {
-					disconnect(true);
-				}
-			}
-		});
-	}
-
-	private void sendPostBindInitialization() {
-		smVersion = 0;
-		if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
-			smVersion = 3;
-		} else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
-			smVersion = 2;
-		}
-		if (smVersion != 0) {
-			final EnablePacket enable = new EnablePacket(smVersion);
-			tagWriter.writeStanzaAsync(enable);
-			stanzasSent = 0;
-			messageReceipts.clear();
-		}
-		features.carbonsEnabled = false;
-		features.blockListRequested = false;
-		disco.clear();
-		sendServiceDiscoveryInfo(account.getServer());
-		sendServiceDiscoveryItems(account.getServer());
-		if (bindListener != null) {
-			bindListener.onBind(account);
-		}
-		sendInitialPing();
-	}
-
-	private void sendServiceDiscoveryInfo(final Jid server) {
-		if (disco.containsKey(server.toDomainJid().toString())) {
-			if (account.getServer().equals(server.toDomainJid())) {
-				enableAdvancedStreamFeatures();
-			}
-		} else {
-			final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
-			iq.setTo(server.toDomainJid());
-			iq.query("http://jabber.org/protocol/disco#info");
-			this.sendIqPacket(iq, new OnIqPacketReceived() {
-
-				@Override
-				public void onIqPacketReceived(final Account account, final IqPacket packet) {
-					final List<Element> elements = packet.query().getChildren();
-					final List<String> features = new ArrayList<>();
-					for (final Element element : elements) {
-						if (element.getName().equals("identity")) {
-							if ("irc".equals(element.getAttribute("type"))) {
-								//add fake feature to not confuse irc and real muc
-								features.add("siacs:no:muc");
-							}
-						} else if (element.getName().equals("feature")) {
-							features.add(element.getAttribute("var"));
-						}
-					}
-					disco.put(server.toDomainJid().toString(), features);
-
-					if (account.getServer().equals(server.toDomainJid())) {
-						enableAdvancedStreamFeatures();
-						for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
-							listener.onAdvancedStreamFeaturesAvailable(account);
-						}
-					}
-				}
-			});
-		}
-	}
-
-	private void enableAdvancedStreamFeatures() {
-		if (getFeatures().carbons() && !features.carbonsEnabled) {
-			sendEnableCarbons();
-		}
-		if (getFeatures().blocking() && !features.blockListRequested) {
-			Log.d(Config.LOGTAG, "Requesting block list");
-			this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
-		}
-	}
-
-	private void sendServiceDiscoveryItems(final Jid server) {
-		final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
-		iq.setTo(server.toDomainJid());
-		iq.query("http://jabber.org/protocol/disco#items");
-		this.sendIqPacket(iq, new OnIqPacketReceived() {
-
-			@Override
-			public void onIqPacketReceived(final Account account, final IqPacket packet) {
-				final List<Element> elements = packet.query().getChildren();
-				for (final Element element : elements) {
-					if (element.getName().equals("item")) {
-						final Jid jid = element.getAttributeAsJid("jid");
-						if (jid != null && !jid.equals(account.getServer())) {
-							sendServiceDiscoveryInfo(jid);
-						}
-					}
-				}
-			}
-		});
-	}
-
-	private void sendEnableCarbons() {
-		final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
-		iq.addChild("enable", "urn:xmpp:carbons:2");
-		this.sendIqPacket(iq, new OnIqPacketReceived() {
-
-			@Override
-			public void onIqPacketReceived(final Account account, final IqPacket packet) {
-				if (!packet.hasChild("error")) {
-					Log.d(Config.LOGTAG, account.getJid().toBareJid()
-							+ ": successfully enabled carbons");
-					features.carbonsEnabled = true;
-				} else {
-					Log.d(Config.LOGTAG, account.getJid().toBareJid()
-							+ ": error enableing carbons " + packet.toString());
-				}
-			}
-		});
-	}
-
-	private void processStreamError(final Tag currentTag)
-		throws XmlPullParserException, IOException {
-		final Element streamError = tagReader.readElement(currentTag);
-		if (streamError != null && streamError.hasChild("conflict")) {
-			final String resource = account.getResource().split("\\.")[0];
-			account.setResource(resource + "." + nextRandomId());
-			Log.d(Config.LOGTAG,
-					account.getJid().toBareJid() + ": switching resource due to conflict ("
-					+ account.getResource() + ")");
-		}
-	}
-
-	private void sendStartStream() throws IOException {
-		final Tag stream = Tag.start("stream:stream");
-		stream.setAttribute("from", account.getJid().toBareJid().toString());
-		stream.setAttribute("to", account.getServer().toString());
-		stream.setAttribute("version", "1.0");
-		stream.setAttribute("xml:lang", "en");
-		stream.setAttribute("xmlns", "jabber:client");
-		stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
-		tagWriter.writeTag(stream);
-	}
-
-	private String nextRandomId() {
-		return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
-	}
-
-	public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
-		packet.setFrom(account.getJid());
-		this.sendUnmodifiedIqPacket(packet,callback);
-
-	}
-
-	private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
-		if (packet.getId() == null) {
-			final String id = nextRandomId();
-			packet.setAttribute("id", id);
-		}
-		if (callback != null) {
-			if (packet.getId() == null) {
-				packet.setId(nextRandomId());
-			}
-			packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
-		}
-		this.sendPacket(packet);
-	}
-
-	public void sendMessagePacket(final MessagePacket packet) {
-		this.sendPacket(packet);
-	}
-
-	public void sendPresencePacket(final PresencePacket packet) {
-		this.sendPacket(packet);
-	}
-
-	private synchronized void sendPacket(final AbstractStanza packet) {
-		final String name = packet.getName();
-		if (name.equals("iq") || name.equals("message") || name.equals("presence")) {
-			++stanzasSent;
-		}
-		tagWriter.writeStanzaAsync(packet);
-		if (packet instanceof MessagePacket && packet.getId() != null && this.streamId != null) {
-			Log.d(Config.LOGTAG, "request delivery report for stanza " + stanzasSent);
-			this.messageReceipts.put(stanzasSent, packet.getId());
-			tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
-		}
-	}
-
-	public void sendPing() {
-		if (streamFeatures.hasChild("sm")) {
-			tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
-		} else {
-			final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
-			iq.setFrom(account.getJid());
-			iq.addChild("ping", "urn:xmpp:ping");
-			this.sendIqPacket(iq, null);
-		}
-		this.lastPingSent = SystemClock.elapsedRealtime();
-	}
-
-	public void setOnMessagePacketReceivedListener(
-			final OnMessagePacketReceived listener) {
-		this.messageListener = listener;
-			}
-
-	public void setOnUnregisteredIqPacketReceivedListener(
-			final OnIqPacketReceived listener) {
-		this.unregisteredIqListener = listener;
-			}
-
-	public void setOnPresencePacketReceivedListener(
-			final OnPresencePacketReceived listener) {
-		this.presenceListener = listener;
-			}
-
-	public void setOnJinglePacketReceivedListener(
-			final OnJinglePacketReceived listener) {
-		this.jingleListener = listener;
-			}
-
-	public void setOnStatusChangedListener(final OnStatusChanged listener) {
-		this.statusListener = listener;
-	}
-
-	public void setOnBindListener(final OnBindListener listener) {
-		this.bindListener = listener;
-	}
-
-	public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
-		this.acknowledgedListener = listener;
-	}
-
-	public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
-		if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
-			this.advancedStreamFeaturesLoadedListeners.add(listener);
-		}
-	}
-
-	public void disconnect(final boolean force) {
-		Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting");
-		try {
-			if (force) {
-				socket.close();
-				return;
-			}
-			new Thread(new Runnable() {
-
-				@Override
-				public void run() {
-					if (tagWriter.isActive()) {
-						tagWriter.finish();
-						try {
-							while (!tagWriter.finished()) {
-								Log.d(Config.LOGTAG, "not yet finished");
-								Thread.sleep(100);
-							}
-							tagWriter.writeTag(Tag.end("stream:stream"));
-							socket.close();
-						} catch (final IOException e) {
-							Log.d(Config.LOGTAG,
-									"io exception during disconnect");
-						} catch (final InterruptedException e) {
-							Log.d(Config.LOGTAG, "interrupted");
-						}
-					}
-				}
-			}).start();
-		} catch (final IOException e) {
-			Log.d(Config.LOGTAG, "io exception during disconnect");
-		}
-	}
-
-	public List<String> findDiscoItemsByFeature(final String feature) {
-		final List<String> items = new ArrayList<>();
-		for (final Entry<String, List<String>> cursor : disco.entrySet()) {
-			if (cursor.getValue().contains(feature)) {
-				items.add(cursor.getKey());
-			}
-		}
-		return items;
-	}
-
-	public String findDiscoItemByFeature(final String feature) {
-		final List<String> items = findDiscoItemsByFeature(feature);
-		if (items.size() >= 1) {
-			return items.get(0);
-		}
-		return null;
-	}
-
-	public void r() {
-		this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
-	}
-
-	public String getMucServer() {
-		for (final Entry<String, List<String>> cursor : disco.entrySet()) {
-			final List<String> value = cursor.getValue();
-			if (value.contains("http://jabber.org/protocol/muc") && !value.contains("jabber:iq:gateway") && !value.contains("siacs:no:muc")) {
-				return cursor.getKey();
-			}
-		}
-		return null;
-	}
-
-	public int getTimeToNextAttempt() {
-		final int interval = (int) (25 * Math.pow(1.5, attempt));
-		final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
-		return interval - secondsSinceLast;
-	}
-
-	public int getAttempt() {
-		return this.attempt;
-	}
-
-	public Features getFeatures() {
-		return this.features;
-	}
-
-	public long getLastSessionEstablished() {
-		final long diff;
-		if (this.lastSessionStarted == 0) {
-			diff = SystemClock.elapsedRealtime() - this.lastConnect;
-		} else {
-			diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
-		}
-		return System.currentTimeMillis() - diff;
-	}
-
-	public long getLastConnect() {
-		return this.lastConnect;
-	}
-
-	public long getLastPingSent() {
-		return this.lastPingSent;
-	}
-
-	public long getLastPacketReceived() {
-		return this.lastPacketReceived;
-	}
-
-	public void sendActive() {
-		this.sendPacket(new ActivePacket());
-	}
-
-	public void sendInactive() {
-		this.sendPacket(new InactivePacket());
-	}
-
-	public void resetAttemptCount() {
-		this.attempt = 0;
-		this.lastConnect = 0;
-	}
-
-	public class Features {
-		XmppConnection connection;
-		private boolean carbonsEnabled = false;
-		private boolean encryptionEnabled = false;
-		private boolean blockListRequested = false;
-
-		public Features(final XmppConnection connection) {
-			this.connection = connection;
-		}
-
-		private boolean hasDiscoFeature(final Jid server, final String feature) {
-			return connection.disco.containsKey(server.toDomainJid().toString()) &&
-				connection.disco.get(server.toDomainJid().toString()).contains(feature);
-		}
-
-		public boolean carbons() {
-			return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
-		}
-
-		public boolean blocking() {
-			return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
-		}
-
-		public boolean register() {
-			return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
-		}
-
-		public boolean sm() {
-			return streamId != null;
-		}
-
-		public boolean csi() {
-			return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
-		}
-
-		public boolean pubsub() {
-			return hasDiscoFeature(account.getServer(),
-					"http://jabber.org/protocol/pubsub#publish");
-		}
-
-		public boolean mam() {
-			return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
-		}
-
-		public boolean advancedStreamFeaturesLoaded() {
-			return disco.containsKey(account.getServer().toString());
-		}
-
-		public boolean rosterVersioning() {
-			return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
-		}
-
-		public void setBlockListRequested(boolean value) {
-			this.blockListRequested = value;
-		}
-	}
-
-	private IqGenerator getIqGenerator() {
-		return mXmppConnectionService.getIqGenerator();
-	}
-}