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Diffstat (limited to 'src/eu/siacs/conversations/xmpp/XmppConnection.java')
-rw-r--r--src/eu/siacs/conversations/xmpp/XmppConnection.java446
1 files changed, 446 insertions, 0 deletions
diff --git a/src/eu/siacs/conversations/xmpp/XmppConnection.java b/src/eu/siacs/conversations/xmpp/XmppConnection.java
new file mode 100644
index 00000000..4583c145
--- /dev/null
+++ b/src/eu/siacs/conversations/xmpp/XmppConnection.java
@@ -0,0 +1,446 @@
+package eu.siacs.conversations.xmpp;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.math.BigInteger;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.security.SecureRandom;
+import java.util.HashSet;
+import java.util.Hashtable;
+import java.util.List;
+
+import javax.net.ssl.SSLSocket;
+import javax.net.ssl.SSLSocketFactory;
+
+import org.xmlpull.v1.XmlPullParserException;
+
+import android.os.Bundle;
+import android.os.PowerManager;
+import android.util.Log;
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.utils.DNSHelper;
+import eu.siacs.conversations.utils.SASL;
+import eu.siacs.conversations.xml.Element;
+import eu.siacs.conversations.xml.Tag;
+import eu.siacs.conversations.xml.TagWriter;
+import eu.siacs.conversations.xml.XmlReader;
+
+public class XmppConnection implements Runnable {
+
+ protected Account account;
+ private static final String LOGTAG = "xmppService";
+
+ private PowerManager.WakeLock wakeLock;
+
+ private SecureRandom random = new SecureRandom();
+
+ private Socket socket;
+ private XmlReader tagReader;
+ private TagWriter tagWriter;
+
+ private boolean isTlsEncrypted = false;
+ private boolean isAuthenticated = false;
+ // private boolean shouldUseTLS = false;
+ private boolean shouldConnect = true;
+ private boolean shouldBind = true;
+ private boolean shouldAuthenticate = true;
+ private Element streamFeatures;
+ private HashSet<String> discoFeatures = new HashSet<String>();
+
+ private static final int PACKET_IQ = 0;
+ private static final int PACKET_MESSAGE = 1;
+ private static final int PACKET_PRESENCE = 2;
+
+ private Hashtable<String, OnIqPacketReceived> iqPacketCallbacks = new Hashtable<String, OnIqPacketReceived>();
+ private OnPresencePacketReceived presenceListener = null;
+ private OnIqPacketReceived unregisteredIqListener = null;
+ private OnMessagePacketReceived messageListener = null;
+ private OnStatusChanged statusListener = null;
+
+ public XmppConnection(Account account, PowerManager pm) {
+ this.account = account;
+ wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
+ "XmppConnection");
+ tagReader = new XmlReader(wakeLock);
+ tagWriter = new TagWriter();
+ }
+
+ protected void connect() {
+ try {
+ Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
+ String srvRecordServer = namePort.getString("name");
+ int srvRecordPort = namePort.getInt("port");
+ if (srvRecordServer != null) {
+ Log.d(LOGTAG, account.getJid() + ": using values from dns "
+ + srvRecordServer + ":" + srvRecordPort);
+ socket = new Socket(srvRecordServer, srvRecordPort);
+ } else {
+ socket = new Socket(account.getServer(), 5222);
+ }
+ OutputStream out = socket.getOutputStream();
+ tagWriter.setOutputStream(out);
+ 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 {
+ Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName());
+ return;
+ }
+ }
+ if (socket.isConnected()) {
+ socket.close();
+ }
+ } catch (UnknownHostException e) {
+ account.setStatus(Account.STATUS_SERVER_NOT_FOUND);
+ if (statusListener != null) {
+ statusListener.onStatusChanged(account);
+ }
+ return;
+ } catch (IOException e) {
+ Log.d(LOGTAG, "bla " + e.getMessage());
+ if (shouldConnect) {
+ Log.d(LOGTAG, account.getJid() + ": connection lost");
+ account.setStatus(Account.STATUS_OFFLINE);
+ if (statusListener != null) {
+ statusListener.onStatusChanged(account);
+ }
+ }
+ } catch (XmlPullParserException e) {
+ Log.d(LOGTAG, "xml exception " + e.getMessage());
+ return;
+ }
+
+ }
+
+ @Override
+ public void run() {
+ shouldConnect = true;
+ while (shouldConnect) {
+ connect();
+ try {
+ if (shouldConnect) {
+ Thread.sleep(30000);
+ }
+ } catch (InterruptedException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ }
+ Log.d(LOGTAG, "end run");
+ }
+
+ private void processStream(Tag currentTag) throws XmlPullParserException,
+ IOException {
+ 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")) {
+ isAuthenticated = true;
+ Log.d(LOGTAG, account.getJid()
+ + ": read success tag in stream. reset again");
+ tagReader.readTag();
+ tagReader.reset();
+ sendStartStream();
+ processStream(tagReader.readTag());
+ break;
+ } else if (nextTag.isStart("failure")) {
+ Element failure = tagReader.readElement(nextTag);
+ Log.d(LOGTAG, "read failure element" + failure.toString());
+ account.setStatus(Account.STATUS_UNAUTHORIZED);
+ if (statusListener != null) {
+ statusListener.onStatusChanged(account);
+ }
+ tagWriter.writeTag(Tag.end("stream"));
+ } else if (nextTag.isStart("iq")) {
+ processIq(nextTag);
+ } else if (nextTag.isStart("message")) {
+ processMessage(nextTag);
+ } else if (nextTag.isStart("presence")) {
+ processPresence(nextTag);
+ } else {
+ Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName()
+ + " as child of " + currentTag.getName());
+ }
+ nextTag = tagReader.readTag();
+ }
+ if (account.getStatus() == Account.STATUS_ONLINE) {
+ account.setStatus(Account.STATUS_OFFLINE);
+ if (statusListener != null) {
+ statusListener.onStatusChanged(account);
+ }
+ }
+ }
+
+ private Element processPacket(Tag currentTag, 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();
+ while (!nextTag.isEnd(element.getName())) {
+ if (!nextTag.isNo()) {
+ Element child = tagReader.readElement(nextTag);
+ element.addChild(child);
+ }
+ nextTag = tagReader.readTag();
+ }
+ return element;
+ }
+
+ private IqPacket processIq(Tag currentTag) throws XmlPullParserException,
+ IOException {
+ IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
+ if (iqPacketCallbacks.containsKey(packet.getId())) {
+ iqPacketCallbacks.get(packet.getId()).onIqPacketReceived(account,
+ packet);
+ iqPacketCallbacks.remove(packet.getId());
+ } else if (this.unregisteredIqListener != null) {
+ this.unregisteredIqListener.onIqPacketReceived(account, packet);
+ }
+ return packet;
+ }
+
+ private void processMessage(Tag currentTag) throws XmlPullParserException,
+ IOException {
+ MessagePacket packet = (MessagePacket) processPacket(currentTag,
+ PACKET_MESSAGE);
+ if (this.messageListener != null) {
+ this.messageListener.onMessagePacketReceived(account, packet);
+ }
+ }
+
+ private void processPresence(Tag currentTag) throws XmlPullParserException,
+ IOException {
+ PresencePacket packet = (PresencePacket) processPacket(currentTag,
+ PACKET_PRESENCE);
+ if (this.presenceListener != null) {
+ this.presenceListener.onPresencePacketReceived(account, packet);
+ }
+ }
+
+ private void sendStartTLS() {
+ Tag startTLS = Tag.empty("starttls");
+ startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
+ Log.d(LOGTAG, account.getJid() + ": sending starttls");
+ tagWriter.writeTag(startTLS);
+ }
+
+ private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
+ IOException {
+ Tag nextTag = tagReader.readTag(); // should be proceed end tag
+ Log.d(LOGTAG, account.getJid() + ": now switch to ssl");
+ SSLSocket sslSocket;
+ try {
+ sslSocket = (SSLSocket) ((SSLSocketFactory) SSLSocketFactory
+ .getDefault()).createSocket(socket, socket.getInetAddress()
+ .getHostAddress(), socket.getPort(), true);
+ tagReader.setInputStream(sslSocket.getInputStream());
+ Log.d(LOGTAG, "reset inputstream");
+ tagWriter.setOutputStream(sslSocket.getOutputStream());
+ Log.d(LOGTAG, "switch over seemed to work");
+ isTlsEncrypted = true;
+ sendStartStream();
+ processStream(tagReader.readTag());
+ sslSocket.close();
+ } catch (IOException e) {
+ Log.d(LOGTAG,
+ account.getJid() + ": error on ssl '" + e.getMessage()
+ + "'");
+ }
+ }
+
+ private void sendSaslAuth() throws IOException, XmlPullParserException {
+ String saslString = SASL.plain(account.getUsername(),
+ account.getPassword());
+ Element auth = new Element("auth");
+ auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
+ auth.setAttribute("mechanism", "PLAIN");
+ auth.setContent(saslString);
+ Log.d(LOGTAG, account.getJid() + ": sending sasl " + auth.toString());
+ tagWriter.writeElement(auth);
+ }
+
+ private void processStreamFeatures(Tag currentTag)
+ throws XmlPullParserException, IOException {
+ this.streamFeatures = tagReader.readElement(currentTag);
+ Log.d(LOGTAG, account.getJid() + ": process stream features "
+ + streamFeatures);
+ if (this.streamFeatures.hasChild("starttls")
+ && account.isOptionSet(Account.OPTION_USETLS)) {
+ sendStartTLS();
+ } else if (this.streamFeatures.hasChild("mechanisms")
+ && shouldAuthenticate) {
+ sendSaslAuth();
+ }
+ if (this.streamFeatures.hasChild("bind") && shouldBind) {
+ sendBindRequest();
+ if (this.streamFeatures.hasChild("session")) {
+ IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
+ Element session = new Element("session");
+ session.setAttribute("xmlns",
+ "urn:ietf:params:xml:ns:xmpp-session");
+ session.setContent("");
+ startSession.addChild(session);
+ sendIqPacket(startSession, null);
+ tagWriter.writeElement(startSession);
+ }
+ Element presence = new Element("presence");
+
+ tagWriter.writeElement(presence);
+ }
+ }
+
+ private void sendBindRequest() throws IOException {
+ IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
+ Element bind = new Element("bind");
+ bind.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-bind");
+ iq.addChild(bind);
+ this.sendIqPacket(iq, new OnIqPacketReceived() {
+ @Override
+ public void onIqPacketReceived(Account account, IqPacket packet) {
+ String resource = packet.findChild("bind").findChild("jid")
+ .getContent().split("/")[1];
+ account.setResource(resource);
+ account.setStatus(Account.STATUS_ONLINE);
+ if (statusListener != null) {
+ statusListener.onStatusChanged(account);
+ }
+ sendServiceDiscovery();
+ }
+ });
+ }
+
+ private void sendServiceDiscovery() {
+ IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
+ iq.setAttribute("to", account.getServer());
+ Element query = new Element("query");
+ query.setAttribute("xmlns", "http://jabber.org/protocol/disco#info");
+ iq.addChild(query);
+ this.sendIqPacket(iq, new OnIqPacketReceived() {
+
+ @Override
+ public void onIqPacketReceived(Account account, IqPacket packet) {
+ if (packet.hasChild("query")) {
+ List<Element> elements = packet.findChild("query")
+ .getChildren();
+ for (int i = 0; i < elements.size(); ++i) {
+ if (elements.get(i).getName().equals("feature")) {
+ discoFeatures.add(elements.get(i).getAttribute(
+ "var"));
+ }
+ }
+ }
+ if (discoFeatures.contains("urn:xmpp:carbons:2")) {
+ sendEnableCarbons();
+ }
+ }
+ });
+ }
+
+ private void sendEnableCarbons() {
+ Log.d(LOGTAG,account.getJid()+": enable carbons");
+ IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
+ Element enable = new Element("enable");
+ enable.setAttribute("xmlns", "urn:xmpp:carbons:2");
+ iq.addChild(enable);
+ this.sendIqPacket(iq, new OnIqPacketReceived() {
+
+ @Override
+ public void onIqPacketReceived(Account account, IqPacket packet) {
+ if (!packet.hasChild("error")) {
+ Log.d(LOGTAG,account.getJid()+": successfully enabled carbons");
+ } else {
+ Log.d(LOGTAG,account.getJid()+": error enableing carbons "+packet.toString());
+ }
+ }
+ });
+ }
+
+ private void processStreamError(Tag currentTag) {
+ Log.d(LOGTAG, "processStreamError");
+ }
+
+ private void sendStartStream() {
+ Tag stream = Tag.start("stream:stream");
+ stream.setAttribute("from", account.getJid());
+ stream.setAttribute("to", account.getServer());
+ 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, random).toString(32);
+ }
+
+ public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
+ String id = nextRandomId();
+ packet.setAttribute("id", id);
+ tagWriter.writeElement(packet);
+ if (callback != null) {
+ iqPacketCallbacks.put(id, callback);
+ }
+ //Log.d(LOGTAG, account.getJid() + ": sending: " + packet.toString());
+ }
+
+ public void sendMessagePacket(MessagePacket packet) {
+ Log.d(LOGTAG,"sending message packet "+packet.toString());
+ tagWriter.writeElement(packet);
+ }
+
+ public void sendPresencePacket(PresencePacket packet) {
+ tagWriter.writeElement(packet);
+ Log.d(LOGTAG, account.getJid() + ": sending: " + packet.toString());
+ }
+
+ public void setOnMessagePacketReceivedListener(
+ OnMessagePacketReceived listener) {
+ this.messageListener = listener;
+ }
+
+ public void setOnUnregisteredIqPacketReceivedListener(
+ OnIqPacketReceived listener) {
+ this.unregisteredIqListener = listener;
+ }
+
+ public void setOnPresencePacketReceivedListener(
+ OnPresencePacketReceived listener) {
+ this.presenceListener = listener;
+ }
+
+ public void setOnStatusChangedListener(OnStatusChanged listener) {
+ this.statusListener = listener;
+ }
+
+ public void disconnect() {
+ shouldConnect = false;
+ tagWriter.writeTag(Tag.end("stream:stream"));
+ }
+}