/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tomcat.websocket;
import java.util.Locale;
import java.util.ServiceLoader;
/**
* Utility method to return the appropriate authenticator according to the scheme that the server uses.
*/
public class AuthenticatorFactory {
/**
* Return a new authenticator instance.
*
* @param authScheme The scheme used
*
* @return the authenticator
*/
public static Authenticator getAuthenticator(String authScheme) {
return switch (authScheme.toLowerCase(Locale.ENGLISH)) {
case BasicAuthenticator.schemeName -> new BasicAuthenticator();
case DigestAuthenticator.schemeName -> new DigestAuthenticator();
default -> loadAuthenticators(authScheme);
};
}
private static Authenticator loadAuthenticators(String authScheme) {
ServiceLoader<Authenticator> serviceLoader = ServiceLoader.load(Authenticator.class);
for (Authenticator auth : serviceLoader) {
if (auth.getSchemeName().equalsIgnoreCase(authScheme)) {
return auth;
}
}
return null;
}
}