/*

 * Copyright (c) 2003, 2006, 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.  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,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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package com.sun.security.sasl;

import javax.security.sasl.*;

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

import java.util.Map;

import javax.security.auth.callback.CallbackHandler;

/**

  * Server factory for CRAM-MD5.

  *

  * Requires the following callback to be satisfied by callback handler

  * when using CRAM-MD5.

  * - AuthorizeCallback (to get canonicalized authzid)

  *

  * @author Rosanna Lee

  */

final public class ServerFactoryImpl implements SaslServerFactory {

    private static final String myMechs[] = {

        "CRAM-MD5", //

    };

    private static final int mechPolicies[] = {

        PolicyUtils.NOPLAINTEXT|PolicyUtils.NOANONYMOUS,      // CRAM-MD5

    };

    private static final int CRAMMD5 = 0;

    public ServerFactoryImpl() {

    }

    public SaslServer createSaslServer(String mech,

        String protocol,

        String serverName,

        Map<String,?> props,

        CallbackHandler cbh) throws SaslException {

        if (mech.equals(myMechs[CRAMMD5])

            && PolicyUtils.checkPolicy(mechPolicies[CRAMMD5], props)) {

            if (cbh == null) {

                throw new SaslException(

            "Callback handler with support for AuthorizeCallback required");

            }

            return new CramMD5Server(protocol, serverName, props, cbh);

        }

        return null;

    };

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

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

    }

}