if (request == null) {
throw new IllegalArgumentException("HTTP request may not be null");
}
switch (state) {
case UNINITIATED:
throw new AuthenticationException(getSchemeName() + " authentication has not been initiated");
case FAILED:
throw new AuthenticationException(getSchemeName() + " authentication has failed");
case CHALLENGE_RECEIVED:
try {
String key = null;
if (isProxy()) {
key = ExecutionContext.HTTP_PROXY_HOST;
} else {
key = ExecutionContext.HTTP_TARGET_HOST;
}
HttpHost host = (HttpHost) context.getAttribute(key);
if (host == null) {
throw new AuthenticationException("Authentication host is not set " +
"in the execution context");
}
String authServer;
if (!this.stripPort && host.getPort() > 0) {
authServer = host.toHostString();
} else {
authServer = host.getHostName();
}
if (log.isDebugEnabled()) {
log.debug("init " + authServer);
}
token = generateToken(token, authServer);
state = State.TOKEN_GENERATED;
} catch (GSSException gsse) {
state = State.FAILED;
if (gsse.getMajor() == GSSException.DEFECTIVE_CREDENTIAL
|| gsse.getMajor() == GSSException.CREDENTIALS_EXPIRED)
throw new InvalidCredentialsException(gsse.getMessage(), gsse);
if (gsse.getMajor() == GSSException.NO_CRED )
throw new InvalidCredentialsException(gsse.getMessage(), gsse);
if (gsse.getMajor() == GSSException.DEFECTIVE_TOKEN
|| gsse.getMajor() == GSSException.DUPLICATE_TOKEN
|| gsse.getMajor() == GSSException.OLD_TOKEN)
throw new AuthenticationException(gsse.getMessage(), gsse);
// other error
throw new AuthenticationException(gsse.getMessage());
}
case TOKEN_GENERATED:
String tokenstr = new String(base64codec.encode(token));
if (log.isDebugEnabled()) {
log.debug("Sending response '" + tokenstr + "' back to the auth server");