org.apache.hadoop.hdfs.protocol.datatransfer.WhitelistBasedTrustedChannelResolver Maven / Gradle / Ivy
/**
* 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.hdfs.protocol.datatransfer;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.datatransfer.TrustedChannelResolver;
import org.apache.hadoop.util.CombinedIPWhiteList;
public class WhitelistBasedTrustedChannelResolver extends TrustedChannelResolver {
private CombinedIPWhiteList whiteListForServer;
private CombinedIPWhiteList whitelistForClient;
private static final String FIXEDWHITELIST_DEFAULT_LOCATION = "/etc/hadoop/fixedwhitelist";
private static final String VARIABLEWHITELIST_DEFAULT_LOCATION = "/etc/hadoop/whitelist";
/**
* Path to the file to containing subnets and ip addresses to form fixed whitelist.
*/
public static final String DFS_DATATRANSFER_SERVER_FIXEDWHITELIST_FILE =
"dfs.datatransfer.server.fixedwhitelist.file";
/**
* Enables/Disables variable whitelist
*/
public static final String DFS_DATATRANSFER_SERVER_VARIABLEWHITELIST_ENABLE =
"dfs.datatransfer.server.variablewhitelist.enable";
/**
* Path to the file to containing subnets and ip addresses to form variable whitelist.
*/
public static final String DFS_DATATRANSFER_SERVER_VARIABLEWHITELIST_FILE =
"dfs.datatransfer.server.variablewhitelist.file";
/**
* time in seconds by which the variable whitelist file is checked for updates
*/
public static final String DFS_DATATRANSFER_SERVER_VARIABLEWHITELIST_CACHE_SECS =
"dfs.datatransfer.server.variablewhitelist.cache.secs";
/**
* Path to the file to containing subnets and ip addresses to form fixed whitelist.
*/
public static final String DFS_DATATRANSFER_CLIENT_FIXEDWHITELIST_FILE =
"dfs.datatransfer.client.fixedwhitelist.file";
/**
* Enables/Disables variable whitelist
*/
public static final String DFS_DATATRANSFER_CLIENT_VARIABLEWHITELIST_ENABLE =
"dfs.datatransfer.client.variablewhitelist.enable";
/**
* Path to the file to containing subnets and ip addresses to form variable whitelist.
*/
public static final String DFS_DATATRANSFER_CLIENT_VARIABLEWHITELIST_FILE =
"dfs.datatransfer.client.variablewhitelist.file";
/**
* time in seconds by which the variable whitelist file is checked for updates
*/
public static final String DFS_DATATRANSFER_CLIENT_VARIABLEWHITELIST_CACHE_SECS =
"dfs.datatransfer.client.variablewhitelist.cache.secs";
@Override
public void setConf(Configuration conf) {
super.setConf(conf);
String fixedFile = conf.get(DFS_DATATRANSFER_SERVER_FIXEDWHITELIST_FILE,
FIXEDWHITELIST_DEFAULT_LOCATION);
String variableFile = null;
long expiryTime = 0;
if (conf.getBoolean(DFS_DATATRANSFER_SERVER_VARIABLEWHITELIST_ENABLE, false)) {
variableFile = conf.get(DFS_DATATRANSFER_SERVER_VARIABLEWHITELIST_FILE,
VARIABLEWHITELIST_DEFAULT_LOCATION);
expiryTime =
conf.getLong(DFS_DATATRANSFER_SERVER_VARIABLEWHITELIST_CACHE_SECS,3600) * 1000;
}
whiteListForServer = new CombinedIPWhiteList(fixedFile,variableFile,expiryTime);
fixedFile = conf.get(DFS_DATATRANSFER_CLIENT_FIXEDWHITELIST_FILE, fixedFile);
expiryTime = 0;
if (conf.getBoolean(DFS_DATATRANSFER_CLIENT_VARIABLEWHITELIST_ENABLE, false)) {
variableFile = conf.get(DFS_DATATRANSFER_CLIENT_VARIABLEWHITELIST_FILE,variableFile);
expiryTime =
conf.getLong(DFS_DATATRANSFER_CLIENT_VARIABLEWHITELIST_CACHE_SECS,3600) * 1000;
}
whitelistForClient = new CombinedIPWhiteList(fixedFile,variableFile,expiryTime);
}
public boolean isTrusted() {
try {
return whitelistForClient.isIn(InetAddress.getLocalHost().getHostAddress());
} catch (UnknownHostException e) {
return false;
}
}
public boolean isTrusted(InetAddress clientAddress) {
return whiteListForServer.isIn(clientAddress.getHostAddress());
}
}