/*

 * 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.

 *

 */

/**

 * @test

 * @bug 4894125

 * @summary test that failover for KeyPairGenerator works

 * @author Andreas Sterbenz

 */

import java.util.*;

import java.security.*;

import java.security.interfaces.*;

import java.security.spec.*;

public class Failover {

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

        Security.insertProviderAt(new ProviderFail(), 1);

        Security.addProvider(new ProviderPass());

        System.out.println(Arrays.asList(Security.getProviders()));

        KeyPairGenerator kpg;

        kpg = KeyPairGenerator.getInstance("FOO");

        kpg.generateKeyPair();

        kpg.generateKeyPair();

        kpg = KeyPairGenerator.getInstance("FOO");

        kpg.initialize(1024);

        kpg.initialize(1024);

        kpg.initialize(null, null);

        kpg.generateKeyPair();

        kpg = KeyPairGenerator.getInstance("FOO");

        kpg.initialize(null, null);

        kpg.generateKeyPair();

        kpg = KeyPairGenerator.getInstance("FOO");

        kpg.initialize(512);

        kpg.generateKeyPair();

        kpg.generateKeyPair();

        // the SUN DSA KeyPairGenerator implementation extends

        // KeyPairGenerator (in order to implement

        // java.security.interfaces.DSAKeyPairGenerator)

        // failover cannot work

        kpg = KeyPairGenerator.getInstance("DSA");

        try {

            kpg.initialize(1024);

            throw new Exception("no exception");

        } catch (InvalidParameterException e) {

            System.out.println(e);

        }

        KeyPair kp;

        kpg = KeyPairGenerator.getInstance("RSA");

        kpg.initialize(512);

        kp = kpg.generateKeyPair();

        System.out.println(kp.getPublic());

        kpg = KeyPairGenerator.getInstance("RSA");

        kpg.initialize(768);

        kp = kpg.generateKeyPair();

        System.out.println(kp.getPublic());

        kpg = KeyPairGenerator.getInstance("RSA");

        kp = kpg.generateKeyPair();

        System.out.println(kp.getPublic());

        kpg = KeyPairGenerator.getInstance("RSA");

        try {

            kpg.initialize(128);

            throw new Exception("no exception");

        } catch (InvalidParameterException e) {

            System.out.println(e);

        }

    }

    private static class ProviderPass extends Provider {

        ProviderPass() {

            super("Pass", 1.0d, "Pass");

            put("KeyPairGenerator.FOO" , "Failover$KeyPairGeneratorPass");

        }

    }

    private static class ProviderFail extends Provider {

        ProviderFail() {

            super("Fail", 1.0d, "Fail");

            put("KeyPairGenerator.FOO" , "Failover$KeyPairGeneratorFail");

            put("KeyPairGenerator.DSA" , "Failover$KeyPairGeneratorFail");

            put("KeyPairGenerator.RSA" , "Failover$KeyPairGeneratorFail");

        }

    }

    public static class KeyPairGeneratorPass extends KeyPairGeneratorSpi {

        public void initialize(int keysize, SecureRandom random) {

            System.out.println("KeyPairGeneratorPass.initialize(" + keysize + ", " + random + ")");

        }

        public void initialize(AlgorithmParameterSpec params,

                SecureRandom random) throws InvalidAlgorithmParameterException {

            System.out.println("KeyPairGeneratorPass.initialize()");

        }

        public KeyPair generateKeyPair() {

            System.out.println("KeyPairGeneratorPass.generateKeyPair()");

            return null;

        }

    }

    public static class KeyPairGeneratorFail extends KeyPairGeneratorSpi {

        public void initialize(int keysize, SecureRandom random) {

            if (keysize != 512) {

                System.out.println("KeyPairGeneratorFail.initialize()");

                throw new InvalidParameterException();

            }

            System.out.println("KeyPairGeneratorFail.initialize() PASS");

        }

        public void initialize(AlgorithmParameterSpec params,

                SecureRandom random) throws InvalidAlgorithmParameterException {

            System.out.println("KeyPairGeneratorFail.initialize()");

            throw new InvalidParameterException();

        }

        public KeyPair generateKeyPair() {

            System.out.println("KeyPairGeneratorFail.generateKeyPair()");

            throw new InvalidParameterException();

        }

    }

}