Java example source code file (BuildOddSel.java)

This example Java source code file (BuildOddSel.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

buildoddsel, can\'t, certpath, certselector, exception, fileinputstream, invalidalgorithmparameterexception, ioexception, oddsel, pkixbuilderparameters, security, set, trustanchor, unknownerror, util, x509certificate

The BuildOddSel.java Java example source code

/*
 * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 4459538
 * @summary make sure a PKIX CertPathBuilder throws an
 *      InvalidAlgorithmParameterException if the target constraints
 *      specified in the PKIXBuilderParameters is not an instance of
 *      X509CertSelector.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import java.security.InvalidAlgorithmParameterException;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.cert.CertPathBuilder;
import java.security.cert.CertPathBuilderResult;
import java.security.cert.PKIXBuilderParameters;
import java.security.cert.TrustAnchor;
import java.security.cert.X509Certificate;
import java.security.cert.CertSelector;

import java.util.Collections;
import java.util.Set;

/**
 * BuildOddSel tries to perform a simple build of a certification path
 * using the PKIX algorithm and a bogus target constraints CertSelector
 * (one that is not an instance of X509CertSelector). On success, it should
 * throw an InvalidAlgorithmParameterException.
 *
 * @author      Steve Hanna
 * @author      Sean Mullan
 */
public final class BuildOddSel {

    private static PKIXBuilderParameters params;
    private static CertSelector sel;

    public static void main(String[] args) throws Exception {

        try {
            createParams();
            build(params);
            throw new Exception
                ("CertPath should not have been built successfully");
        } catch (InvalidAlgorithmParameterException iape) {
        }
    }

    /**
     * CertSelector class that should cause SunCertPathBuilder to
     * throw an InvalidAlgorithmParameterException.
     */
    static class OddSel implements CertSelector {
        public Object clone() {
            try {
                return super.clone();
            } catch (CloneNotSupportedException e) {
                throw new UnknownError();
            }
        }
        public boolean match(Certificate cert) {
            return(false);
        }
    }

    public static void createParams() throws Exception {
        TrustAnchor anchor = new TrustAnchor(getCertFromFile("sun.cer"), null);
        Set anchors = Collections.singleton(anchor);
        // Create odd CertSelector
        sel = new OddSel();
        params = new PKIXBuilderParameters(anchors, sel);
        params.setRevocationEnabled(false);
    }

    /**
     * Get a DER-encoded X.509 certificate from a file.
     *
     * @param certFilePath path to file containing DER-encoded certificate
     * @return X509Certificate
     * @throws IOException on error
     */
    public static X509Certificate getCertFromFile(String certFilePath)
        throws IOException {
            X509Certificate cert = null;
            try {
                File certFile = new File(System.getProperty("test.src", "."),
                    certFilePath);
                FileInputStream certFileInputStream =
                    new FileInputStream(certFile);
                CertificateFactory cf = CertificateFactory.getInstance("X509");
                cert = (X509Certificate)
                    cf.generateCertificate(certFileInputStream);
            } catch (Exception e) {
                e.printStackTrace();
                throw new IOException("Can't construct X509Certificate: " +
                                      e.getMessage());
            }
            return cert;
    }

    /**
     * Perform a PKIX build.
     *
     * @param params PKIXBuilderParameters to use in building
     * @throws Exception on error
     */
    public static void build(PKIXBuilderParameters params)
        throws Exception {
        CertPathBuilder builder =
            CertPathBuilder.getInstance("PKIX");
        CertPathBuilderResult cpbr = builder.build(params);
    }
}