private void getSaltedPasswordFromTwoWay(NameCallback nameCallback, ByteStringBuilder b)
throws SaslException {
CredentialCallback credentialCallback =
new CredentialCallback(singletonMap(TwoWayPassword.class, emptySet()));
final ParameterCallback parameterCallback =
new ParameterCallback(IteratedSaltedPasswordAlgorithmSpec.class);
try {
tryHandleCallbacks(nameCallback, parameterCallback, credentialCallback);
algorithmSpec = (IteratedSaltedPasswordAlgorithmSpec) parameterCallback.getParameterSpec();
if (algorithmSpec == null) throw new FastUnsupportedCallbackException(parameterCallback);
} catch (UnsupportedCallbackException e) {
Callback callback = e.getCallback();
if (callback == nameCallback) {
throw log.saslCallbackHandlerDoesNotSupportUserName(getMechanismName(), e);
} else if (callback == credentialCallback) {
return; // credential acquisition not supported
} else if (callback == parameterCallback) {
// one more try, with default parameters
salt = ScramUtil.generateSalt(16, getRandom());
algorithmSpec = new IteratedSaltedPasswordAlgorithmSpec(minimumIterationCount, salt);
try {
tryHandleCallbacks(nameCallback, credentialCallback);
} catch (UnsupportedCallbackException ex) {
callback = ex.getCallback();
if (callback == nameCallback) {
throw log.saslCallbackHandlerDoesNotSupportUserName(getMechanismName(), ex);
} else if (callback == credentialCallback) {
return;
} else {
throw log.saslCallbackHandlerFailedForUnknownReason(getMechanismName(), ex);
}
}
} else {
throw log.saslCallbackHandlerDoesNotSupportCredentialAcquisition(getMechanismName(), e);
}
}
// get the clear password
TwoWayPassword password = (TwoWayPassword) credentialCallback.getCredential();
char[] passwordChars = ScramUtil.getTwoWayPasswordChars(getMechanismName(), password);
getSaltedPasswordFromPasswordChars(passwordChars, b);
}
private void getSaltedPasswordFromPasswordCallback(NameCallback nameCallback, ByteStringBuilder b)
throws SaslException {
final PasswordCallback passwordCallback = new PasswordCallback("User password", false);
try {
tryHandleCallbacks(nameCallback, passwordCallback);
} catch (UnsupportedCallbackException e) {
final Callback callback = e.getCallback();
if (callback == nameCallback) {
throw log.saslCallbackHandlerDoesNotSupportUserName(getMechanismName(), e);
} else if (callback == passwordCallback) {
return; // PasswordCallback not supported
} else {
throw log.saslCallbackHandlerFailedForUnknownReason(getMechanismName(), e);
}
}
salt = ScramUtil.generateSalt(16, getRandom());
algorithmSpec = new IteratedSaltedPasswordAlgorithmSpec(minimumIterationCount, salt);
char[] passwordChars = passwordCallback.getPassword();
passwordCallback.clearPassword();
getSaltedPasswordFromPasswordChars(passwordChars, b);
}