| /** |
| * 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()); |
| } |
| } |