@Override
public synchronized void setService(Service service) {
if (service == null) service = nullService;
log.debug("Setting active service to {}", service.getName());
this.service = service;
}
@Override
public void reqService(Service service) throws TransportException {
serviceAccept.lock();
try {
serviceAccept.clear();
sendServiceRequest(service.getName());
serviceAccept.await(timeoutMs, TimeUnit.MILLISECONDS);
setService(service);
} finally {
serviceAccept.unlock();
}
}
/**
* This is where all incoming packets are handled. If they pertain to the transport layer, they
* are handled here; otherwise they are delegated to the active service instance if any via {@link
* Service#handle}.
*
* <p>Even among the transport layer specific packets, key exchange packets are delegated to
* {@link KeyExchanger#handle}.
*
* <p>This method is called in the context of the {@link #reader} thread via {@link
* Decoder#received} when a full packet has been decoded.
*
* @param msg the message identifer
* @param buf buffer containg rest of the packet
* @throws SSHException if an error occurs during handling (unrecoverable)
*/
@Override
public void handle(Message msg, SSHPacket buf) throws SSHException {
this.msg = msg;
log.trace("Received packet {}", msg);
if (msg.geq(50)) // not a transport layer packet
service.handle(msg, buf);
else if (msg.in(20, 21) || msg.in(30, 49)) // kex packet
kexer.handle(msg, buf);
else
switch (msg) {
case DISCONNECT:
{
gotDisconnect(buf);
break;
}
case IGNORE:
{
log.debug("Received SSH_MSG_IGNORE");
break;
}
case UNIMPLEMENTED:
{
gotUnimplemented(buf);
break;
}
case DEBUG:
{
gotDebug(buf);
break;
}
case SERVICE_ACCEPT:
{
gotServiceAccept();
break;
}
case USERAUTH_BANNER:
{
log.debug("Received USERAUTH_BANNER");
break;
}
default:
sendUnimplemented();
}
}
@Override
public String getNextServiceName() {
return nextService.getName();
}