hadoop AuthenticationFilterInitializer 源码

haddop AuthenticationFilterInitializer 代码

文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/AuthenticationFilterInitializer.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.hadoop.security;

import org.apache.hadoop.http.HttpServer2;
import org.apache.hadoop.security.authentication.server.AuthenticationFilter;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.http.FilterContainer;
import org.apache.hadoop.http.FilterInitializer;
import org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 * Initializes hadoop-auth AuthenticationFilter which provides support for
 * Kerberos HTTP SPNEGO authentication.
 * <p>
 * It enables anonymous access, simple/pseudo and Kerberos HTTP SPNEGO
 * authentication  for Hadoop JobTracker, NameNode, DataNodes and
 * TaskTrackers.
 * <p>
 * Refer to the <code>core-default.xml</code> file, after the comment
 * 'HTTP Authentication' for details on the configuration options.
 * All related configuration properties have 'hadoop.http.authentication.'
 * as prefix.
 */
public class AuthenticationFilterInitializer extends FilterInitializer {

  static final String PREFIX = "hadoop.http.authentication.";

  /**
   * Initializes hadoop-auth AuthenticationFilter.
   * <p>
   * Propagates to hadoop-auth AuthenticationFilter configuration all Hadoop
   * configuration properties prefixed with "hadoop.http.authentication."
   *
   * @param container The filter container
   * @param conf Configuration for run-time parameters
   */
  @Override
  public void initFilter(FilterContainer container, Configuration conf) {
    Map<String, String> filterConfig = getFilterConfigMap(conf, PREFIX);

    container.addFilter("authentication",
                        AuthenticationFilter.class.getName(),
                        filterConfig);
  }

  public static Map<String, String> getFilterConfigMap(Configuration conf,
      String prefix) {
    Map<String, String> filterConfig = new HashMap<String, String>();

    //setting the cookie path to root '/' so it is used for all resources.
    filterConfig.put(AuthenticationFilter.COOKIE_PATH, "/");
    Map<String, String> propsWithPrefix = conf.getPropsWithPrefix(prefix);

    for (Map.Entry<String, String> entry : propsWithPrefix.entrySet()) {
      filterConfig.put(entry.getKey(), entry.getValue());
    }

    //Resolve _HOST into bind address
    String bindAddress = conf.get(HttpServer2.BIND_ADDRESS);
    String principal = filterConfig.get(KerberosAuthenticationHandler.PRINCIPAL);
    if (principal != null) {
      try {
        principal = SecurityUtil.getServerPrincipal(principal, bindAddress);
      }
      catch (IOException ex) {
        throw new RuntimeException("Could not resolve Kerberos principal name: " + ex.toString(), ex);
      }
      filterConfig.put(KerberosAuthenticationHandler.PRINCIPAL, principal);
    }
    return filterConfig;
  }

}

相关信息

hadoop 源码目录

相关文章

hadoop AccessControlException 源码

hadoop AnnotatedSecurityInfo 源码

hadoop CompositeGroupsMapping 源码

hadoop Credentials 源码

hadoop FastSaslClientFactory 源码

hadoop FastSaslServerFactory 源码

hadoop GroupMappingServiceProvider 源码

hadoop Groups 源码

hadoop HadoopKerberosName 源码

hadoop HttpCrossOriginFilterInitializer 源码