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 * 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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,

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 *

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package com.sun.security.sasl;

import java.security.AccessController;

import java.security.PrivilegedAction;

import java.security.NoSuchAlgorithmException;

import java.security.InvalidParameterException;

import java.security.ProviderException;

import static sun.security.util.SecurityConstants.PROVIDER_VER;

/**

 * The SASL provider.

 * Provides client support for

 * - EXTERNAL

 * - PLAIN

 * - CRAM-MD5

 * - DIGEST-MD5

 * - NTLM

 * And server support for

 * - CRAM-MD5

 * - DIGEST-MD5

 * - NTLM

 */

public final class Provider extends java.security.Provider {

    private static final long serialVersionUID = 8622598936488630849L;

    private static final String info = "Sun SASL provider" +

        "(implements client mechanisms for: " +

        "DIGEST-MD5, EXTERNAL, PLAIN, CRAM-MD5, NTLM;" +

        " server mechanisms for: DIGEST-MD5, CRAM-MD5, NTLM)";

    private static final class ProviderService

        extends java.security.Provider.Service {

        ProviderService(java.security.Provider p, String type, String algo,

            String cn) {

            super(p, type, algo, cn, null, null);

        }

        @Override

        public Object newInstance(Object ctrParamObj)

            throws NoSuchAlgorithmException {

            String type = getType();

            if (ctrParamObj != null) {

                throw new InvalidParameterException

                    ("constructorParameter not used with " + type + " engines");

            }

            String algo = getAlgorithm();

            try {

                // DIGEST-MD5, NTLM uses same impl class for client and server

                if (algo.equals("DIGEST-MD5")) {

                    return new com.sun.security.sasl.digest.FactoryImpl();

                }

                if (algo.equals("NTLM")) {

                    return new com.sun.security.sasl.ntlm.FactoryImpl();

                }

                if (type.equals("SaslClientFactory")) {

                    if (algo.equals("EXTERNAL") || algo.equals("PLAIN") ||

                        algo.equals("CRAM-MD5")) {

                        return new com.sun.security.sasl.ClientFactoryImpl();

                    }

                } else if (type.equals("SaslServerFactory")) {

                    if (algo.equals("CRAM-MD5")) {

                        return new com.sun.security.sasl.ServerFactoryImpl();

                    }

                }

            } catch (Exception ex) {

                throw new NoSuchAlgorithmException("Error constructing " +

                    type + " for " + algo + " using SunSASL", ex);

            }

            throw new ProviderException("No impl for " + algo +

                " " + type);

        }

    }

    public Provider() {

        super("SunSASL", PROVIDER_VER, info);

        final Provider p = this;

        AccessController.doPrivileged(new PrivilegedAction<Void>() {

            public Void run() {

                // Client mechanisms

                putService(new ProviderService(p, "SaslClientFactory",

                           "DIGEST-MD5", "com.sun.security.sasl.digest.FactoryImpl"));

                putService(new ProviderService(p, "SaslClientFactory",

                           "NTLM", "com.sun.security.sasl.ntlm.FactoryImpl"));

                putService(new ProviderService(p, "SaslClientFactory",

                           "EXTERNAL", "com.sun.security.sasl.ClientFactoryImpl"));

                putService(new ProviderService(p, "SaslClientFactory",

                           "PLAIN", "com.sun.security.sasl.ClientFactoryImpl"));

                putService(new ProviderService(p, "SaslClientFactory",

                           "CRAM-MD5", "com.sun.security.sasl.ClientFactoryImpl"));

                // Server mechanisms

                putService(new ProviderService(p, "SaslServerFactory",

                           "CRAM-MD5", "com.sun.security.sasl.ServerFactoryImpl"));

                putService(new ProviderService(p, "SaslServerFactory",

                           "DIGEST-MD5", "com.sun.security.sasl.digest.FactoryImpl"));

                putService(new ProviderService(p, "SaslServerFactory",

                           "NTLM", "com.sun.security.sasl.ntlm.FactoryImpl"));

                return null;

            }

        });

    }

}