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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 org.apache.catalina.authenticator.jaspic;

import java.util.Map;

import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.message.AuthException;
import javax.security.auth.message.config.AuthConfigFactory;
import javax.security.auth.message.config.AuthConfigProvider;
import javax.security.auth.message.config.ClientAuthConfig;
import javax.security.auth.message.config.ServerAuthConfig;

/**
 * Basic implementation primarily intended for use when using third-party
 * {@link javax.security.auth.message.module.ServerAuthModule} implementations that only provide the module.
 */
public class SimpleAuthConfigProvider implements AuthConfigProvider {

    private final Map properties;

    private volatile ServerAuthConfig serverAuthConfig;

    public SimpleAuthConfigProvider(Map properties, AuthConfigFactory factory) {
        this.properties = properties;
        if (factory != null) {
            factory.registerConfigProvider(this, null, null, "Automatic registration");
        }
    }


    /**
     * {@inheritDoc}
     * 

* This implementation does not support client-side authentication and therefore always returns {@code null}. */ @Override public ClientAuthConfig getClientAuthConfig(String layer, String appContext, CallbackHandler handler) throws AuthException { return null; } @Override public ServerAuthConfig getServerAuthConfig(String layer, String appContext, CallbackHandler handler) throws AuthException { ServerAuthConfig serverAuthConfig = this.serverAuthConfig; if (serverAuthConfig == null) { synchronized (this) { if (this.serverAuthConfig == null) { this.serverAuthConfig = createServerAuthConfig(layer, appContext, handler, properties); } serverAuthConfig = this.serverAuthConfig; } } return serverAuthConfig; } protected ServerAuthConfig createServerAuthConfig(String layer, String appContext, CallbackHandler handler, Map properties) { return new SimpleServerAuthConfig(layer, appContext, handler, properties); } @Override public void refresh() { ServerAuthConfig serverAuthConfig = this.serverAuthConfig; if (serverAuthConfig != null) { serverAuthConfig.refresh(); } } }





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