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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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package com.sun.security.sasl.gsskerb;

import javax.security.sasl.*;

import com.sun.security.sasl.util.PolicyUtils;

import java.util.Map;

import javax.security.auth.callback.CallbackHandler;

/**

  * Client/server factory for GSSAPI (Kerberos V5) SASL client/server mechs.

  * See GssKrb5Client/GssKrb5Server for input requirements.

  *

  * @author Rosanna Lee

  */

public final class FactoryImpl implements SaslClientFactory, SaslServerFactory {

    private static final String[] myMechs = {

        "GSSAPI"};

    private static final int[] mechPolicies = {

        PolicyUtils.NOPLAINTEXT|PolicyUtils.NOANONYMOUS|PolicyUtils.NOACTIVE

    };

    private static final int GSS_KERB_V5 = 0;

    public FactoryImpl() {

    }

    public SaslClient createSaslClient(String[] mechs,

        String authorizationId,

        String protocol,

        String serverName,

        Map<String,?> props,

        CallbackHandler cbh) throws SaslException {

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

                if (mechs[i].equals(myMechs[GSS_KERB_V5])

                    && PolicyUtils.checkPolicy(mechPolicies[GSS_KERB_V5], props)) {

                    return new GssKrb5Client(

                        authorizationId,

                        protocol,

                        serverName,

                        props,

                        cbh);

                }

            }

            return null;

    };

    public SaslServer createSaslServer(String mech,

        String protocol,

        String serverName,

        Map<String,?> props,

        CallbackHandler cbh) throws SaslException {

            if (mech.equals(myMechs[GSS_KERB_V5])

                && PolicyUtils.checkPolicy(mechPolicies[GSS_KERB_V5], props)) {

                if (cbh == null) {

                    throw new SaslException(

                "Callback handler with support for AuthorizeCallback required");

                }

                return new GssKrb5Server(

                    protocol,

                    serverName,

                    props,

                    cbh);

            }

            return null;

    };

    public String[] getMechanismNames(Map<String,?> props) {

        return PolicyUtils.filterMechs(myMechs, mechPolicies, props);

    }

}