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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wildfly.security.sasl.gssapi;

import java.util.Map;

import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import javax.security.sasl.SaslServerFactory;

import org.kohsuke.MetaInfServices;
import org.wildfly.security.sasl.util.SaslMechanismInformation;

/**
 * SaslServerFactory for the GSSAPI mechanism as defined by RFC 4752
 *
 * @author Darran Lofthouse
 */
@MetaInfServices(value = SaslServerFactory.class)
public class GssapiServerFactory extends AbstractGssapiFactory implements SaslServerFactory {

    @Override
    public SaslServer createSaslServer(String mechanism, String protocol, String serverName, Map props,
            CallbackHandler cbh) throws SaslException {
        // TODO - We are actually required by RFC4752 to ensure we have the acceptor credential BEFORE advertising the
        // mechanism is available.
        if (SaslMechanismInformation.Names.GSSAPI.equals(mechanism) && matches(props, false)) {
            GssapiServer server = new GssapiServer(protocol, serverName, props, cbh);
            server.init();

            return server;
        }

        return null;
    }

}