JDK8/Java8源码在线阅读

/*
 * 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 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(

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