urlacpolicyfinder.java

一个完整的XACML工程,学习XACML技术的好例子!

/*
* Copyright (c) 2006, University of Kent
* All rights reserved.
*
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* this list of conditions and the following disclaimer in the documentation 
* and/or other materials provided with the distribution. 
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* contributors may be used to endorse or promote products derived from this 
* software without specific prior written permission. 
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* 2. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS  
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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package issrg.pba.rbac.x509;

import issrg.pba.PbaException;
import issrg.pba.rbac.CustomisePERMIS;
import issrg.pba.rbac.URLHandler;
import issrg.pba.rbac.SignatureVerifier;
import issrg.utils.repository.AttributeRepository;
import java.security.Principal;

/**
 * This is a simple extension of RepositoryACPolicyFinder that uses a single
 * URL to identify a Repository with the policy in it. There must be a 
 * URLHandler that can build a AttributeRepository for the URL used in the
 * constructor. See URLHandler documentation for the list of the URLHandlers
 * available by default.
 *
 * @see issrg.pba.rbac.URLHandler
 * @see issrg.pba.rbac.CustomisePERMIS#addURLHandler(String)
 *
 * @author Sassa
 */
public class URLACPolicyFinder extends RepositoryACPolicyFinder{
    
    /** 
     * This constructor instantiates a URLACPolicyFinder by using a URL. It is
     * a shortcut for calling <code>new RepositoryACPolicyFinder(URLHandler.getRepositoryByURL(uRL), PolicyId, SOA, SV)</code>
     *
     * @param uRL - the URL of the repository; there must already be a 
     *   URLHandler registered for this URL
     * @param PolicyId - the identifier of the policy
     * @param SOA - the issuer of the policy and the name of the entry in the
     *   repository with the Attribute Certificates
     * @param SV - the SignatureVerifier used to validate signatures on the
     *   ACs; if null, no signature verification will be performed (NOT 
     *   RECOMMENDED FOR PRODUCTION DEPLOYMENTS!)
     */
    public URLACPolicyFinder(String uRL, String PolicyId, Principal SOA,
            SignatureVerifier SV) throws PbaException {
      super(URLHandler.getRepositoryByURL(uRL), PolicyId, SOA, SV);
    }
}