/*
 * 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.catalina.realm;

import java.security.Principal;

This Realm is intended for use with Authenticator implementations (SSLAuthenticator, SpnegoAuthenticator) that authenticate the user as well as obtain the user credentials. An authenticated Principal is always created from the user name presented to without further validation. 

Note: It is unsafe to use this Realm with Authenticator
implementations that do not validate the provided credentials.
/**
 * This Realm is intended for use with Authenticator implementations
 * ({@link org.apache.catalina.authenticator.SSLAuthenticator},
 * {@link org.apache.catalina.authenticator.SpnegoAuthenticator}) that
 * authenticate the user as well as obtain the user credentials. An
 * authenticated Principal is always created from the user name presented to
 * without further validation.
 * <p>
 * <strong>Note:</strong> It is unsafe to use this Realm with Authenticator
 * implementations that do not validate the provided credentials.
 */
public class AuthenticatedUserRealm extends RealmBase {

    @Override
    protected String getPassword(String username) {
        // Passwords never need validating so always return null
        return null;
    }

    @Override
    protected Principal getPrincipal(String username) {
        // The authentication mechanism has authenticated the user so create
        // the Principal directly
        return new GenericPrincipal(username);
    }
}