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package eu.siacs.conversations.xmpp.jingle;
import java.math.BigInteger;
import java.security.SecureRandom;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import android.annotation.SuppressLint;
import android.util.Log;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.entities.Account;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.AbstractConnectionManager;
import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.xml.Element;
import eu.siacs.conversations.xmpp.OnIqPacketReceived;
import eu.siacs.conversations.xmpp.jid.InvalidJidException;
import eu.siacs.conversations.xmpp.jid.Jid;
import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
import eu.siacs.conversations.xmpp.stanzas.IqPacket;
public class JingleConnectionManager extends AbstractConnectionManager {
private List<JingleConnection> connections = new CopyOnWriteArrayList<>();
private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
@SuppressLint("TrulyRandom")
private SecureRandom random = new SecureRandom();
public JingleConnectionManager(XmppConnectionService service) {
super(service);
}
public void deliverPacket(Account account, JinglePacket packet) {
if (packet.isAction("session-initiate")) {
JingleConnection connection = new JingleConnection(this);
connection.init(account, packet);
connections.add(connection);
} else {
for (JingleConnection connection : connections) {
if (connection.getAccount() == account
&& connection.getSessionId().equals(
packet.getSessionId())
&& connection.getCounterPart().equals(packet.getFrom())) {
connection.deliverPacket(packet);
return;
}
}
IqPacket response = packet.generateRespone(IqPacket.TYPE_ERROR);
Element error = response.addChild("error");
error.setAttribute("type", "cancel");
error.addChild("item-not-found",
"urn:ietf:params:xml:ns:xmpp-stanzas");
error.addChild("unknown-session", "urn:xmpp:jingle:errors:1");
account.getXmppConnection().sendIqPacket(response, null);
}
}
public JingleConnection createNewConnection(Message message) {
JingleConnection connection = new JingleConnection(this);
connection.init(message);
this.connections.add(connection);
return connection;
}
public JingleConnection createNewConnection(final JinglePacket packet) {
JingleConnection connection = new JingleConnection(this);
this.connections.add(connection);
return connection;
}
public void finishConnection(JingleConnection connection) {
this.connections.remove(connection);
}
public void getPrimaryCandidate(Account account,
final OnPrimaryCandidateFound listener) {
if (Config.NO_PROXY_LOOKUP) {
listener.onPrimaryCandidateFound(false, null);
return;
}
if (!this.primaryCandidates.containsKey(account.getJid().toBareJid())) {
String xmlns = "http://jabber.org/protocol/bytestreams";
final String proxy = account.getXmppConnection()
.findDiscoItemByFeature(xmlns);
if (proxy != null) {
IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
iq.setAttribute("to", proxy);
iq.query(xmlns);
account.getXmppConnection().sendIqPacket(iq,
new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account,
IqPacket packet) {
Element streamhost = packet
.query()
.findChild("streamhost",
"http://jabber.org/protocol/bytestreams");
if (streamhost != null) {
JingleCandidate candidate = new JingleCandidate(
nextRandomId(), true);
candidate.setHost(streamhost
.getAttribute("host"));
candidate.setPort(Integer
.parseInt(streamhost
.getAttribute("port")));
candidate
.setType(JingleCandidate.TYPE_PROXY);
try {
candidate.setJid(Jid.fromString(proxy));
} catch (final InvalidJidException e) {
candidate.setJid(null);
}
candidate.setPriority(655360 + 65535);
primaryCandidates.put(account.getJid().toBareJid(),
candidate);
listener.onPrimaryCandidateFound(true,
candidate);
} else {
listener.onPrimaryCandidateFound(false,
null);
}
}
});
} else {
listener.onPrimaryCandidateFound(false, null);
}
} else {
listener.onPrimaryCandidateFound(true,
this.primaryCandidates.get(account.getJid().toBareJid()));
}
}
public String nextRandomId() {
return new BigInteger(50, random).toString(32);
}
public void deliverIbbPacket(Account account, IqPacket packet) {
String sid = null;
Element payload = null;
if (packet.hasChild("open", "http://jabber.org/protocol/ibb")) {
payload = packet
.findChild("open", "http://jabber.org/protocol/ibb");
sid = payload.getAttribute("sid");
} else if (packet.hasChild("data", "http://jabber.org/protocol/ibb")) {
payload = packet
.findChild("data", "http://jabber.org/protocol/ibb");
sid = payload.getAttribute("sid");
}
if (sid != null) {
for (JingleConnection connection : connections) {
if (connection.getAccount() == account
&& connection.hasTransportId(sid)) {
JingleTransport transport = connection.getTransport();
if (transport instanceof JingleInbandTransport) {
JingleInbandTransport inbandTransport = (JingleInbandTransport) transport;
inbandTransport.deliverPayload(packet, payload);
return;
}
}
}
Log.d(Config.LOGTAG,
"couldnt deliver payload: " + payload.toString());
} else {
Log.d(Config.LOGTAG, "no sid found in incomming ibb packet");
}
}
public void cancelInTransmission() {
for (JingleConnection connection : this.connections) {
if (connection.getJingleStatus() == JingleConnection.JINGLE_STATUS_TRANSMITTING) {
connection.cancel();
}
}
}
}
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