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/*
* 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 nginx.unit.websocket;
import java.util.Iterator;
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) {
Authenticator auth = null;
switch (authScheme.toLowerCase()) {
case BasicAuthenticator.schemeName:
auth = new BasicAuthenticator();
break;
case DigestAuthenticator.schemeName:
auth = new DigestAuthenticator();
break;
default:
auth = loadAuthenticators(authScheme);
break;
}
return auth;
}
private static Authenticator loadAuthenticators(String authScheme) {
ServiceLoader<Authenticator> serviceLoader = ServiceLoader.load(Authenticator.class);
Iterator<Authenticator> auths = serviceLoader.iterator();
while (auths.hasNext()) {
Authenticator auth = auths.next();
if (auth.getSchemeName().equalsIgnoreCase(authScheme))
return auth;
}
return null;
}
}
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