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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.geronimo.security.jacc;

import javax.security.jacc.PolicyContextException;
import javax.security.jacc.PolicyContextHandler;

import org.apache.geronimo.security.ContextManager;


/**
 * Container Subject Policy Context Handler
 *
 * @version $Rev: 476049 $ $Date: 2006-11-17 12:35:17 +0800 (Fri, 17 Nov 2006) $
 * @see "JACC v1.0" section 4.6.1.1
 */
public class PolicyContextHandlerContainerSubject implements PolicyContextHandler {

    public static final String HANDLER_KEY = "javax.security.auth.Subject.container";

    public boolean supports(String key) throws PolicyContextException {
        return key.equals(HANDLER_KEY);
    }

    public String[] getKeys() throws PolicyContextException {
        return new String[]{HANDLER_KEY};
    }

    public Object getContext(String key, Object data) throws PolicyContextException {
        try {
            return ContextManager.getCurrentCaller();
        } catch (Exception e) {
            throw new PolicyContextException(e);
        }
    }
}