kafka ScramServerCallbackHandler 源码

kafka ScramServerCallbackHandler 代码

文件路径：/clients/src/main/java/org/apache/kafka/common/security/scram/internals/ScramServerCallbackHandler.java

/*
 * 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 org.apache.kafka.common.security.scram.internals;

import java.util.List;
import java.util.Map;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.AppConfigurationEntry;

import org.apache.kafka.common.security.auth.AuthenticateCallbackHandler;
import org.apache.kafka.common.security.authenticator.CredentialCache;
import org.apache.kafka.common.security.scram.ScramCredential;
import org.apache.kafka.common.security.scram.ScramCredentialCallback;
import org.apache.kafka.common.security.token.delegation.TokenInformation;
import org.apache.kafka.common.security.token.delegation.internals.DelegationTokenCache;
import org.apache.kafka.common.security.token.delegation.internals.DelegationTokenCredentialCallback;

public class ScramServerCallbackHandler implements AuthenticateCallbackHandler {

    private final CredentialCache.Cache<ScramCredential> credentialCache;
    private final DelegationTokenCache tokenCache;
    private String saslMechanism;

    public ScramServerCallbackHandler(CredentialCache.Cache<ScramCredential> credentialCache,
                                      DelegationTokenCache tokenCache) {
        this.credentialCache = credentialCache;
        this.tokenCache = tokenCache;
    }

    @Override
    public void configure(Map<String, ?> configs, String mechanism, List<AppConfigurationEntry> jaasConfigEntries) {
        this.saslMechanism = mechanism;
    }

    @Override
    public void handle(Callback[] callbacks) throws UnsupportedCallbackException {
        String username = null;
        for (Callback callback : callbacks) {
            if (callback instanceof NameCallback)
                username = ((NameCallback) callback).getDefaultName();
            else if (callback instanceof DelegationTokenCredentialCallback) {
                DelegationTokenCredentialCallback tokenCallback = (DelegationTokenCredentialCallback) callback;
                tokenCallback.scramCredential(tokenCache.credential(saslMechanism, username));
                tokenCallback.tokenOwner(tokenCache.owner(username));
                TokenInformation tokenInfo = tokenCache.token(username);
                if (tokenInfo != null)
                    tokenCallback.tokenExpiryTimestamp(tokenInfo.expiryTimestamp());
            } else if (callback instanceof ScramCredentialCallback) {
                ScramCredentialCallback sc = (ScramCredentialCallback) callback;
                sc.scramCredential(credentialCache.get(username));
            } else
                throw new UnsupportedCallbackException(callback);
        }
    }

    @Override
    public void close() {
    }
}

相关信息

kafka 源码目录

相关文章

kafka ScramCredentialUtils 源码

kafka ScramExtensions 源码

kafka ScramFormatter 源码

kafka ScramMechanism 源码

kafka ScramMessages 源码

kafka ScramSaslClient 源码

kafka ScramSaslClientProvider 源码

kafka ScramSaslServer 源码

kafka ScramSaslServerProvider 源码