UnifiedX509TrustManager.java

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package com.sun.enterprise.security.ssl.manager;

import java.util.HashSet;
import java.util.Iterator;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.X509TrustManager;

/**
 * This class combines an array of X509TrustManagers into one.
 * @author Shing Wai Chan
 **/
public class UnifiedX509TrustManager implements X509TrustManager {
    private X509TrustManager[] mgrs = null;
    private X509Certificate[] issuers = {};

    public UnifiedX509TrustManager(X509TrustManager[] mgrs) {
        if (mgrs == null) {
            throw new IllegalArgumentException("Null array of X509TrustManagers");
        }
        this.mgrs = mgrs;

        HashSet tset = new HashSet(); //for uniqueness
        for (int i = 0; i < mgrs.length; i++) {
            X509Certificate[] tcerts = mgrs[i].getAcceptedIssuers();
            if (tcerts != null && tcerts.length > 0) {
                for (int j = 0; j < tcerts.length; j++) {
                    tset.add(tcerts[j]);
                }
            }
        }
        issuers = new X509Certificate[tset.size()];
        Iterator iter = tset.iterator();
        for (int i = 0; iter.hasNext(); i++) {
            issuers[i] = (X509Certificate)iter.next();
        }
    }

    // ---------- implements X509TrustManager -----------
    public void checkClientTrusted(X509Certificate[] chain, String authType)
            throws CertificateException {
        CertificateException cex = null;
        for (int i = 0; i < mgrs.length; i++) {
            try {
                cex = null; //reset exception status
                mgrs[i].checkClientTrusted(chain, authType);
                break;
            } catch(CertificateException ex) {
                cex = ex;
            }
        }
        if (cex != null) {
            throw cex;
        }
    }

    public void checkServerTrusted(X509Certificate[] chain, String authType)
            throws CertificateException {
        CertificateException cex = null;
        for (int i = 0; i < mgrs.length; i++) {
            try {
                cex = null; //reset exception status
                mgrs[i].checkServerTrusted(chain, authType);
                break;
            } catch(CertificateException ex) {
                cex = ex;
            }
        }
        if (cex != null) {
            throw cex;
        }
    }

    public X509Certificate[] getAcceptedIssuers() {
        return issuers;
    }
}