/*

 * Copyright (c) 2005, 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.

 */

/**

 * @see AccessKeyStore.sh

 */

import java.security.Provider;

import java.security.*;

import java.security.cert.*;

import java.security.cert.Certificate;

import java.security.interfaces.RSAKey;

import java.util.Enumeration;

public class AccessKeyStore {

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

        // Check if the provider is available

        try {

            Class.forName("sun.security.mscapi.SunMSCAPI");

        } catch (Exception e) {

            System.out.println(

                "The SunMSCAPI provider is not available on this platform: " +

                e);

            return;

        }

        // Check that a security manager has been installed

        if (System.getSecurityManager() == null) {

            throw new Exception("A security manager has not been installed");

        }

        Provider p = Security.getProvider("SunMSCAPI");

        System.out.println("SunMSCAPI provider classname is " +

            p.getClass().getName());

        KeyStore keyStore = KeyStore.getInstance("Windows-MY", p);

        /*

         * If a SecurityManager exists then this will trigger a

         * SecurityException if the following permission has not

         * been granted:

         *

         *     SecurityPermission("authProvider.SunMSCAPI")

         */

        try {

            keyStore.load(null, null);

            if (args.length > 0 && "-deny".equals(args[0])) {

                throw new Exception(

                    "Expected KeyStore.load to throw a SecurityException");

            }

        } catch (SecurityException se) {

            if (args.length > 0 && "-deny".equals(args[0])) {

                System.out.println("Caught the expected exception: " + se);

                return;

            } else {

                throw se;

            }

        }

        int i = 0;

        for (Enumeration e = keyStore.aliases(); e.hasMoreElements(); ) {

            String alias = (String) e.nextElement();

            displayEntry(keyStore, alias, i++);

        }

    }

    private static void displayEntry(KeyStore keyStore, String alias,

        int index) throws KeyStoreException, NoSuchAlgorithmException  {

        if (keyStore.isKeyEntry(alias)) {

            System.out.println("[" + index + "]\n    " + alias +

                " [key-entry]\n");

            try {

                Key key = keyStore.getKey(alias, null);

                if (key instanceof RSAKey) {

                    System.out.println("    Key type: " + key.getAlgorithm() +

                        " (" + ((RSAKey)key).getModulus().bitLength() +

                        " bit)\n");

                } else {

                    System.out.println("    Key type: " + key.getAlgorithm() +

                        "\n");

                }

            } catch (UnrecoverableKeyException e) {

                System.out.println("    Key type: Unknown\n");

            }

            Certificate[] chain = keyStore.getCertificateChain(alias);

            if (chain != null) {

                System.out.println("    Certificate chain: ");

                for (int i = 0; i < chain.length; i ++) {

                    System.out.println("        ["+ (i + 1) + "]");

                    displayCert(chain[i], "            ");

                }

            }

        } else {

            System.out.println("[" + index + "]\n    " + alias +

                " [trusted-cert-entry]\n");

            Certificate[] chain = keyStore.getCertificateChain(alias);

            if (chain != null) {

                System.out.println("    Certificate chain: ");

                for (int i = 0; i < chain.length; i ++) {

                    System.out.println("        ["+ (i + 1) + "]");

                    displayCert(chain[i], "            ");

                }

            }

        }

        System.out.println("-------------------------------------------------");

    }

    private static void displayCert(Certificate cert, String tab) {

        if (cert instanceof X509Certificate) {

            X509Certificate x = (X509Certificate) cert;

            System.out.println(

                tab + "Owner: " + x.getSubjectDN().toString() + "\n" +

                tab + "Issuer: " + x.getIssuerDN().toString() + "\n" +

                tab + "Serial number: " + x.getSerialNumber().toString(16) +

                "\n"+

                tab + "Valid from: " + x.getNotBefore().toString() + "\n" +

                tab + "     until: " + x.getNotAfter().toString());

        } else {

            System.out.println(tab + "[unknown certificate format]");

        }

        System.out.println();

    }

}