/*
 * Copyright (c) 2009, 2014, 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.
 */

//
// Security properties, once set, cannot revert to unset.  To avoid
// conflicts with tests running in the same VM isolate this test by
// running it in otherVM mode.
//

/**
 * @test
 * @bug 6852744
 * @summary PIT b61: PKI test suite fails because self signed certificates
 *          are being rejected
 * @modules java.base/sun.security.util
 * @run main/othervm KeyUsageMatters subca
 * @run main/othervm KeyUsageMatters subci
 * @run main/othervm KeyUsageMatters alice
 * @author Xuelei Fan
 */

import java.io.*;
import java.net.SocketException;
import java.util.*;
import java.security.Security;
import java.security.cert.*;
import java.security.cert.CertPathValidatorException.BasicReason;
import sun.security.util.DerInputStream;

/**
 * KeyUsage extension plays a important rule during looking for the issuer
 * of a certificate or CRL. A certificate issuer should have the keyCertSign
 * bit set, and a CRL issuer should have the cRLSign bit set.
 *
 * Sometime, a delegated CRL issuer would also have the keyCertSign bit set,
 * as would be troublesome to find the proper CRL issuer during certificate
 * path build if the delegated CRL issuer is a self-issued certificate, for
 * it is hard to identify it from its issuer by the "issuer" field only.
 *
 * The fix of 6852744 should addresses above issue, and allow a delegated CRL
 * issuer to have keyCertSign bit set.
 *
 * In the test case, the delegated CRL issuers have cRLSign bit set only, and
 * the CAs have the keyCertSign bit set only, it is expected to work before
 * and after the bug fix of 6852744.
 */
public final class KeyUsageMatters {

    // the trust anchor
    static String selfSignedCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIICPjCCAaegAwIBAgIBADANBgkqhkiG9w0BAQQFADAfMQswCQYDVQQGEwJVUzEQ\n" +
        "MA4GA1UEChMHRXhhbXBsZTAeFw0wOTA0MjcwMjI0MzJaFw0zMDA0MDcwMjI0MzJa\n" +
        "MB8xCzAJBgNVBAYTAlVTMRAwDgYDVQQKEwdFeGFtcGxlMIGfMA0GCSqGSIb3DQEB\n" +
        "AQUAA4GNADCBiQKBgQC4OTag24sTxL2tXTNuvpmUEtdxrYAZoFsslFQ60T+WD9wQ\n" +
        "Jeiw87FSPsR2vxRuv0j8DNm2a4h7LNNIFcLurfNldbz5pvgZ7VqdbbUMPE9qP85n\n" +
        "jgDl4woyRTSUeRI4A7O0CO6NpES21dtbdhroWQrEkHxpnrDPxsxrz5gf2m3gqwID\n" +
        "AQABo4GJMIGGMB0GA1UdDgQWBBSCJd0hpl5PdAD9IZS+Hzng4lXLGzBHBgNVHSME\n" +
        "QDA+gBSCJd0hpl5PdAD9IZS+Hzng4lXLG6EjpCEwHzELMAkGA1UEBhMCVVMxEDAO\n" +
        "BgNVBAoTB0V4YW1wbGWCAQAwDwYDVR0TAQH/BAUwAwEB/zALBgNVHQ8EBAMCAgQw\n" +
        "DQYJKoZIhvcNAQEEBQADgYEAluy6HIjWcq009lTLmhp+Np6dxU78pInBK8RZkza0\n" +
        "484qGaxFGD3UGyZkI5uWmsH2XuMbuox5khfIq6781gmkPBHXBIEtJN8eLusOHEye\n" +
        "iE8h7WI+N3qa6Pj56WionMrioqC/3X+b06o147bbhx8U0vkYv/HyPaITOFfMXTdz\n" +
        "Vjw=\n" +
        "-----END CERTIFICATE-----";

    // the sub-ca
    static String subCaCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIICUDCCAbmgAwIBAgIBAzANBgkqhkiG9w0BAQQFADAfMQswCQYDVQQGEwJVUzEQ\n" +
        "MA4GA1UEChMHRXhhbXBsZTAeFw0wOTA0MjcwMjI0MzRaFw0yOTAxMTIwMjI0MzRa\n" +
        "MDExCzAJBgNVBAYTAlVTMRAwDgYDVQQKEwdFeGFtcGxlMRAwDgYDVQQLEwdDbGFz\n" +
        "cy0xMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCiAJnAQW2ad3ZMKUhSJVZj\n" +
        "8pBqxTcHSTwAVguQkDglsN/OIwUpvR5Jgp3lpRWUEt6idEp0FZzORpvtjt3pr5MG\n" +
        "Eg2CDptekC5BSPS+fIAIKlncB3HwOiFFhH6b3wTydDCdEd2fvsi4QMOSVrIYMeA8\n" +
        "P/mCz6kRhfUQPE0CMmOUewIDAQABo4GJMIGGMB0GA1UdDgQWBBT0/nNP8WpyxmYr\n" +
        "IBp4tN8y08jw2jBHBgNVHSMEQDA+gBSCJd0hpl5PdAD9IZS+Hzng4lXLG6EjpCEw\n" +
        "HzELMAkGA1UEBhMCVVMxEDAOBgNVBAoTB0V4YW1wbGWCAQAwDwYDVR0TAQH/BAUw\n" +
        "AwEB/zALBgNVHQ8EBAMCAgQwDQYJKoZIhvcNAQEEBQADgYEAS9PzI6B39R/U9fRj\n" +
        "UExzN1FXNP5awnAPtiv34kSCL6n6MryqkfG+8aaAOdZsSjmTylNFaF7cW/Xp1VBF\n" +
        "hq0bg/SbEAbK7+UwL8GSC3crhULHLbh+1iFdVTEwxCw5YmB8ji3BaZ/WKW/PkjCZ\n" +
        "7cXP6VDeZMG6oRQ4hbOcixoFPXo=\n" +
        "-----END CERTIFICATE-----";

    // a delegated CRL issuer, it's a self-issued certificate of trust anchor
    static String topCrlIssuerCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIICKzCCAZSgAwIBAgIBAjANBgkqhkiG9w0BAQQFADAfMQswCQYDVQQGEwJVUzEQ\n" +
        "MA4GA1UEChMHRXhhbXBsZTAeFw0wOTA0MjcwMjI0MzNaFw0yOTAxMTIwMjI0MzNa\n" +
        "MB8xCzAJBgNVBAYTAlVTMRAwDgYDVQQKEwdFeGFtcGxlMIGfMA0GCSqGSIb3DQEB\n" +
        "AQUAA4GNADCBiQKBgQDMJeBMBybHykI/YpwUJ4O9euqDSLb1kpWpceBS8TVqvgBC\n" +
        "SgUJWtFZL0i6bdvF6mMdlbuBkGzhXqHiVAi96/zRLbUC9F8SMEJ6MuD+YhQ0ZFTQ\n" +
        "atKy8zf8O9XzztelLJ26Gqb7QPV133WY3haAqHtCXOhEKkCN16NOYNC37DTaJwID\n" +
        "AQABo3cwdTAdBgNVHQ4EFgQULXSWzXzUOIpOJpzbSCpW42IJUugwRwYDVR0jBEAw\n" +
        "PoAUgiXdIaZeT3QA/SGUvh854OJVyxuhI6QhMB8xCzAJBgNVBAYTAlVTMRAwDgYD\n" +
        "VQQKEwdFeGFtcGxlggEAMAsGA1UdDwQEAwIBAjANBgkqhkiG9w0BAQQFAAOBgQAY\n" +
        "eMnf5AHSNlyUlzXk8o2S0h4gCuvKX6C3kFfKuZcWvFAbx4yQOWLS2s15/nzR4+AP\n" +
        "FGX3lgJjROyAh7fGedTQK+NFWwkM2ag1g3hXktnlnT1qHohi0w31nVBJxXEDO/Ck\n" +
        "uJTpJGt8XxxbFaw5v7cHy7XuTAeU/sekvjEiNHW00Q==\n" +
        "-----END CERTIFICATE-----";

    // a delegated CRL issuer, it's a self-issued certificate of sub-ca
    static String subCrlIssuerCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIICPTCCAaagAwIBAgIBBDANBgkqhkiG9w0BAQQFADAfMQswCQYDVQQGEwJVUzEQ\n" +
        "MA4GA1UEChMHRXhhbXBsZTAeFw0wOTA0MjcwMjI0MzRaFw0yOTAxMTIwMjI0MzRa\n" +
        "MDExCzAJBgNVBAYTAlVTMRAwDgYDVQQKEwdFeGFtcGxlMRAwDgYDVQQLEwdDbGFz\n" +
        "cy0xMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWUtDQx2MB/7arDiquMJyd\n" +
        "LWwSg6p8sg5z6wKrC1v47MT4DBhFX+0RUgTMUdQgYpgxGpczn+6y4zfV76064S0N\n" +
        "4L/IQ+SunTW1w4yRGjB+xkyyJmWAqijG1nr+Dgkv5nxPI+9Er5lHcoVWVMEcvvRm\n" +
        "6jIBQdldVlSgv+VgUnFm5wIDAQABo3cwdTAdBgNVHQ4EFgQUkV3Qqtk7gIot9n60\n" +
        "jX6dloxrfMEwRwYDVR0jBEAwPoAUgiXdIaZeT3QA/SGUvh854OJVyxuhI6QhMB8x\n" +
        "CzAJBgNVBAYTAlVTMRAwDgYDVQQKEwdFeGFtcGxlggEAMAsGA1UdDwQEAwIBAjAN\n" +
        "BgkqhkiG9w0BAQQFAAOBgQADu4GM8EdmIKhC7FRvk5jF90zfvZ38wbXBzCjKI4jX\n" +
        "QJrhne1bfyeNNm5c1w+VKidT+XzBzBGH7ZqYzoZmzRIfcbLKX2brEBKiukeeAyL3\n" +
        "bctQtbp19tX+uu2dQberD188AAysKTkHcJUV+rRsTwVJ9vcYKxoRxKk8DhH7ZS3M\n" +
        "rg==\n" +
        "-----END CERTIFICATE-----";

    // the target EE certificate
    static String targetCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIICNzCCAaCgAwIBAgIBAjANBgkqhkiG9w0BAQQFADAxMQswCQYDVQQGEwJVUzEQ\n" +
        "MA4GA1UEChMHRXhhbXBsZTEQMA4GA1UECxMHQ2xhc3MtMTAeFw0wOTA0MjcwMjI0\n" +
        "MzZaFw0yOTAxMTIwMjI0MzZaMEExCzAJBgNVBAYTAlVTMRAwDgYDVQQKEwdFeGFt\n" +
        "cGxlMRAwDgYDVQQLEwdDbGFzcy0xMQ4wDAYDVQQDEwVBbGljZTCBnzANBgkqhkiG\n" +
        "9w0BAQEFAAOBjQAwgYkCgYEAvYSaU3oiE4Pxp/aUIXwMqOwSiWkZ+O3aTu13hRtK\n" +
        "ZyR+Wtj63IuvaigAC4uC+zBypF93ThjwCzVR2qKDQaQzV8CLleO96gStt7Y+i3G2\n" +
        "V3IUGgrVCqeK7N6nNYu0wW84sibcPqG/TIy0UoaQMqgB21xtRF+1DUVlFh4Z89X/\n" +
        "pskCAwEAAaNPME0wCwYDVR0PBAQDAgPoMB0GA1UdDgQWBBSynMEdcal/e9TmvlNE\n" +
        "4suXGA4+hjAfBgNVHSMEGDAWgBT0/nNP8WpyxmYrIBp4tN8y08jw2jANBgkqhkiG\n" +
        "9w0BAQQFAAOBgQB/jru7E/+piSmUwByw5qbZsoQZVcgR97pd2TErNJpJMAX2oIHR\n" +
        "wJH6w4NuYs27+fEAX7wK4whc6EUH/w1SI6o28F2rG6HqYQPPZ2E2WqwbBQL9nYE3\n" +
        "Vfzu/G9axTUQXFbf90h80UErA+mZVxqc2xtymLuH0YEaMZImtRZ2MXHfXg==\n" +
        "-----END CERTIFICATE-----";

    // CRL issued by the delegated CRL issuer, topCrlIssuerCertStr
    static String topCrlStr =
        "-----BEGIN X509 CRL-----\n" +
        "MIIBGzCBhQIBATANBgkqhkiG9w0BAQQFADAfMQswCQYDVQQGEwJVUzEQMA4GA1UE\n" +
        "ChMHRXhhbXBsZRcNMDkwNDI3MDIzODA0WhcNMjgwNjI2MDIzODA0WjAiMCACAQUX\n" +
        "DTA5MDQyNzAyMzgwMFowDDAKBgNVHRUEAwoBBKAOMAwwCgYDVR0UBAMCAQIwDQYJ\n" +
        "KoZIhvcNAQEEBQADgYEAoarfzXEtw3ZDi4f9U8eSvRIipHSyxOrJC7HR/hM5VhmY\n" +
        "CErChny6x9lBVg9s57tfD/P9PSzBLusCcHwHMAbMOEcTltVVKUWZnnbumpywlYyg\n" +
        "oKLrE9+yCOkYUOpiRlz43/3vkEL5hjIKMcDSZnPKBZi1h16Yj2hPe9GMibNip54=\n" +
        "-----END X509 CRL-----";

    // CRL issued by the delegated CRL issuer, subCrlIssuerCertStr
    static String subCrlStr =
        "-----BEGIN X509 CRL-----\n" +
        "MIIBLTCBlwIBATANBgkqhkiG9w0BAQQFADAxMQswCQYDVQQGEwJVUzEQMA4GA1UE\n" +
        "ChMHRXhhbXBsZTEQMA4GA1UECxMHQ2xhc3MtMRcNMDkwNDI3MDIzODA0WhcNMjgw\n" +
        "NjI2MDIzODA0WjAiMCACAQQXDTA5MDQyNzAyMzgwMVowDDAKBgNVHRUEAwoBBKAO\n" +
        "MAwwCgYDVR0UBAMCAQIwDQYJKoZIhvcNAQEEBQADgYEAeS+POqYEIHIIJcsLxuUr\n" +
        "aJFzQ/ujH0QmnyMNEL3Uavyq4VQuAahF+w6aTPb5UBzms0uX8NAvD2vNoUJvmJOX\n" +
        "nGKuq4Q1DFj82E7/9d25nXdWGOmFvFCRVO+St2Xe5n8CJuZNBiz388FDSIOiFSCa\n" +
        "ARGr6Qu68MYGtLMC6ZqP3u0=\n" +
        "-----END X509 CRL-----";

    private static Set<TrustAnchor> generateTrustAnchors()
            throws CertificateException {
        // generate certificate from cert string
        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        ByteArrayInputStream is =
                    new ByteArrayInputStream(selfSignedCertStr.getBytes());
        Certificate selfSignedCert = cf.generateCertificate(is);

        // generate a trust anchor
        TrustAnchor anchor =
            new TrustAnchor((X509Certificate)selfSignedCert, null);

        return Collections.singleton(anchor);
    }

    private static CertStore generateCertificateStore() throws Exception {
        Collection entries = new HashSet();

        // generate certificate from certificate string
        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        ByteArrayInputStream is;

        is = new ByteArrayInputStream(targetCertStr.getBytes());
        Certificate cert = cf.generateCertificate(is);
        entries.add(cert);

        is = new ByteArrayInputStream(subCaCertStr.getBytes());
        cert = cf.generateCertificate(is);
        entries.add(cert);

        is = new ByteArrayInputStream(selfSignedCertStr.getBytes());
        cert = cf.generateCertificate(is);
        entries.add(cert);

        is = new ByteArrayInputStream(topCrlIssuerCertStr.getBytes());
        cert = cf.generateCertificate(is);
        entries.add(cert);

        is = new ByteArrayInputStream(subCrlIssuerCertStr.getBytes());
        cert = cf.generateCertificate(is);
        entries.add(cert);

        // generate CRL from CRL string
        is = new ByteArrayInputStream(topCrlStr.getBytes());
        Collection mixes = cf.generateCRLs(is);
        entries.addAll(mixes);

        is = new ByteArrayInputStream(subCrlStr.getBytes());
        mixes = cf.generateCRLs(is);
        entries.addAll(mixes);

        return CertStore.getInstance("Collection",
                            new CollectionCertStoreParameters(entries));
    }

    private static X509CertSelector generateSelector(String name)
                throws Exception {
        X509CertSelector selector = new X509CertSelector();

        // generate certificate from certificate string
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        ByteArrayInputStream is = null;
        if (name.equals("subca")) {
            is = new ByteArrayInputStream(subCaCertStr.getBytes());
        } else if (name.equals("subci")) {
            is = new ByteArrayInputStream(subCrlIssuerCertStr.getBytes());
        } else {
            is = new ByteArrayInputStream(targetCertStr.getBytes());
        }

        X509Certificate target = (X509Certificate)cf.generateCertificate(is);
        byte[] extVal = target.getExtensionValue("2.5.29.14");
        if (extVal != null) {
            DerInputStream in = new DerInputStream(extVal);
            byte[] subjectKID = in.getOctetString();
            selector.setSubjectKeyIdentifier(subjectKID);
        } else {
            // unlikely to happen.
            throw new Exception("unexpected certificate: no SKID extension");
        }

        return selector;
    }

    private static boolean match(String name, Certificate cert)
                throws Exception {
        X509CertSelector selector = new X509CertSelector();

        // generate certificate from certificate string
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        ByteArrayInputStream is = null;
        if (name.equals("subca")) {
            is = new ByteArrayInputStream(subCaCertStr.getBytes());
        } else if (name.equals("subci")) {
            is = new ByteArrayInputStream(subCrlIssuerCertStr.getBytes());
        } else {
            is = new ByteArrayInputStream(targetCertStr.getBytes());
        }
        X509Certificate target = (X509Certificate)cf.generateCertificate(is);

        return target.equals(cert);
    }


    public static void main(String[] args) throws Exception {
        // MD5 is used in this test case, don't disable MD5 algorithm.
        Security.setProperty(
                "jdk.certpath.disabledAlgorithms", "MD2, RSA keySize < 1024");

        CertPathBuilder builder = CertPathBuilder.getInstance("PKIX");

        X509CertSelector selector = generateSelector(args[0]);

        Set<TrustAnchor> anchors = generateTrustAnchors();
        CertStore certs = generateCertificateStore();


        PKIXBuilderParameters params =
                new PKIXBuilderParameters(anchors, selector);
        params.addCertStore(certs);
        params.setRevocationEnabled(true);
        params.setDate(new Date(109, 5, 1));   // 2009-05-01
        Security.setProperty("ocsp.enable", "false");
        System.setProperty("com.sun.security.enableCRLDP", "true");

        PKIXCertPathBuilderResult result =
                (PKIXCertPathBuilderResult)builder.build(params);

        if (!match(args[0], result.getCertPath().getCertificates().get(0))) {
            throw new Exception("unexpected certificate");
        }
    }
}