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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.tuscany.sca.policy.authentication.basic;


import javax.security.auth.Subject;
import javax.xml.namespace.QName;

import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.invocation.Phase;
import org.apache.tuscany.sca.invocation.PhasedInterceptor;
import org.apache.tuscany.sca.policy.PolicySet;
import org.apache.tuscany.sca.policy.security.SecurityUtil;


/**
 * Policy handler to handle PolicySet related to Logging with the QName
 * {http://tuscany.apache.org/xmlns/sca/1.1/impl/java}LoggingPolicy
 *
 * @version $Rev$ $Date$
 */
public class BasicAuthenticationServicePolicyInterceptor implements PhasedInterceptor {
    private static final String SCA10_TUSCANY_NS = "http://tuscany.apache.org/xmlns/sca/1.1";
    public static final QName policySetQName = new QName(SCA10_TUSCANY_NS, "wsBasicAuthentication");

    private Invoker next;
    private Operation operation;
    private PolicySet policySet = null;
    private String context;
    private BasicAuthenticationPolicy policy;

    public BasicAuthenticationServicePolicyInterceptor(String context, Operation operation, PolicySet policySet) {
        super();
        this.operation = operation;
        this.policySet = policySet;
        this.context = context;
        init();
    }

    private void init() {
        if (policySet != null) {
            for (Object policyObject : policySet.getPolicies()){
                if (policyObject instanceof BasicAuthenticationPolicy){
                    policy = (BasicAuthenticationPolicy)policyObject;
                    break;
                }
            }
        }
    }

    public Message invoke(Message msg) {
        
        Subject subject = SecurityUtil.getSubject(msg);
        BasicAuthenticationPrincipal principal =  SecurityUtil.getPrincipal(subject, 
                                                                            BasicAuthenticationPrincipal.class);

        if (principal != null){
            
            System.out.println("Username: " + 
                               principal.getName() + 
                               " Password: " + 
                               principal.getPassword());
            
            // could call out here to some 3rd party system to do whatever you 
            // need to do do with username and password
           
        }
    
        return getNext().invoke(msg);
    }

    public Invoker getNext() {
        return next;
    }

    public void setNext(Invoker next) {
        this.next = next;
    }

    public String getPhase() {
        return Phase.SERVICE_POLICY;
    }
    
}