com.cloudera.llama.server.GssCallback.java Source code

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Here is the source code for com.cloudera.llama.server.GssCallback.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 com.cloudera.llama.server;

import org.apache.hadoop.security.SaslRpcServer;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.AuthorizeCallback;

public class GssCallback extends SaslRpcServer.SaslGssCallbackHandler {

    @Override
    public void handle(Callback[] callbacks) throws UnsupportedCallbackException {
        AuthorizeCallback ac = null;
        for (Callback callback : callbacks) {
            if (callback instanceof AuthorizeCallback) {
                ac = (AuthorizeCallback) callback;
            } else {
                throw new UnsupportedCallbackException(callback, "Unrecognized SASL GSSAPI Callback");
            }
        }
        if (ac != null) {
            String authid = ac.getAuthenticationID();
            String authzid = ac.getAuthorizationID();
            if (authid.equals(authzid)) {
                ac.setAuthorized(true);
            } else {
                ac.setAuthorized(false);
            }
            if (ac.isAuthorized()) {
                ac.setAuthorizedID(authzid);
            }
        }
    }
}