public Void run() throws GSSException {
NegotiationContext negContext = exchange.getAttachment(NegotiationContext.ATTACHMENT_KEY);
if (negContext == null) {
negContext = new NegotiationContext();
exchange.putAttachment(NegotiationContext.ATTACHMENT_KEY, negContext);
// Also cache it on the connection for future calls.
exchange.getConnection().putAttachment(NegotiationContext.ATTACHMENT_KEY, negContext);
}
GSSContext gssContext = negContext.getGssContext();
if (gssContext == null) {
GSSManager manager = GSSManager.getInstance();
gssContext = manager.createContext((GSSCredential) null);
negContext.setGssContext(gssContext);
}
byte[] respToken =
gssContext.acceptSecContext(
challenge.array(), challenge.arrayOffset(), challenge.limit());
negContext.setResponseToken(respToken);
if (negContext.isEstablished()) {
result.setResult(
new AuthenticationResult(
negContext.getPrincipal(), AuthenticationOutcome.AUTHENTICATED));
} else {
// This isn't a failure but as the context is not established another round trip with the
// client is needed.
result.setResult(
new AuthenticationResult(
negContext.getPrincipal(), AuthenticationOutcome.NOT_AUTHENTICATED));
}
return null;
}
