@Override
protected void init(final Properties parameters) throws BadRealmException, NoSuchRealmException {
super.init(parameters);
_logger.log(Level.FINE, "Initializing {0}", this.getClass().getSimpleName());
// Among the other custom properties, there is a property jaas-context (which is explained later
// in this post).
// This property should be set using the call setProperty method implemented in the parent
// class.
/// From: https://blogs.oracle.com/nithya/entry/groups_in_custom_realms
checkAndSetProperty(JAAS_CONTEXT_PARAM, parameters);
for (Map.Entry<String, String> entry : OPTIONAL_PROPERTIES.entrySet()) {
setOptionalProperty(entry.getKey(), parameters, entry.getValue());
}
String digestAlgorithm = getProperty(PARAM_DIGEST_ALGORITHM);
switch (digestAlgorithm) {
case "none":
transformer = new NullTransformer();
break;
default:
transformer =
new MessageDigestTransformer(
digestAlgorithm,
getProperty(PARAM_DIGEST_ENCODING),
Charset.forName(getProperty(PARAM_PASSWORD_CHARSET)));
}
}
private void checkAndSetProperty(final String name, final String value) throws BadRealmException {
if (value == null) {
String message = sm.getString("realm.missingprop", name, SERVICE_NAME);
throw new BadRealmException(message);
}
log(FINE, "Setting property {0} to ''{1}''", name, value);
super.setProperty(name, value);
}