| /** |
| * 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.tajo.master.rule; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.permission.FsAction; |
| import org.apache.hadoop.fs.permission.FsPermission; |
| import org.apache.hadoop.security.AccessControlException; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.tajo.conf.TajoConf; |
| import org.apache.tajo.master.TajoMaster; |
| import org.apache.tajo.rule.EvaluationContext; |
| import org.apache.tajo.rule.EvaluationResult; |
| import org.apache.tajo.rule.SelfDiagnosisRuleDefinition; |
| import org.apache.tajo.rule.SelfDiagnosisRuleVisibility; |
| import org.apache.tajo.rule.EvaluationResult.EvaluationResultCode; |
| import org.apache.tajo.rule.SelfDiagnosisRule; |
| |
| @SelfDiagnosisRuleDefinition(category="master", name="FileSystemRule") |
| @SelfDiagnosisRuleVisibility.LimitedPrivate(acceptedCallers = { TajoMaster.class }) |
| public class FileSystemRule implements SelfDiagnosisRule { |
| |
| private void canAccessToPath(FileStatus fsStatus, FsAction action) throws Exception { |
| FsPermission permission = fsStatus.getPermission(); |
| UserGroupInformation userGroupInformation = UserGroupInformation.getCurrentUser(); |
| String userName = userGroupInformation.getShortUserName(); |
| List<String> groupList = Arrays.asList(userGroupInformation.getGroupNames()); |
| |
| if (userName.equals(fsStatus.getOwner())) { |
| if (permission.getUserAction().implies(action)) { |
| return; |
| } |
| } else if (groupList.contains(fsStatus.getGroup())) { |
| if (permission.getGroupAction().implies(action)) { |
| return; |
| } |
| } else { |
| if (permission.getOtherAction().implies(action)) { |
| return; |
| } |
| } |
| throw new AccessControlException(String.format( |
| "Permission denied: user=%s, path=\"%s\":%s:%s:%s%s", userName, fsStatus.getPath(), |
| fsStatus.getOwner(), fsStatus.getGroup(), fsStatus.isDirectory() ? "d" : "-", permission)); |
| } |
| |
| private void checkAccessControlOnTajoPaths(TajoConf tajoConf) throws Exception { |
| Path tajoRootPath = TajoConf.getTajoRootDir(tajoConf); |
| FileSystem defaultFs = tajoRootPath.getFileSystem(tajoConf); |
| canAccessToPath(defaultFs.getFileStatus(tajoRootPath), FsAction.READ_WRITE); |
| |
| Path systemPath = TajoConf.getSystemDir(tajoConf); |
| canAccessToPath(defaultFs.getFileStatus(systemPath), FsAction.READ_WRITE); |
| |
| Path systemResourcePath = TajoConf.getSystemResourceDir(tajoConf); |
| canAccessToPath(defaultFs.getFileStatus(systemResourcePath), FsAction.READ_WRITE); |
| |
| Path wareHousePath = TajoConf.getWarehouseDir(tajoConf); |
| canAccessToPath(defaultFs.getFileStatus(wareHousePath), FsAction.READ_WRITE); |
| |
| Path stagingPath = TajoConf.getDefaultRootStagingDir(tajoConf); |
| canAccessToPath(defaultFs.getFileStatus(stagingPath), FsAction.READ_WRITE); |
| } |
| |
| @Override |
| public EvaluationResult evaluate(EvaluationContext context) { |
| EvaluationResult result = new EvaluationResult(); |
| Object tajoConfObj = context.getParameter(TajoConf.class.getName()); |
| |
| if (tajoConfObj != null && tajoConfObj instanceof TajoConf) { |
| TajoConf tajoConf = (TajoConf) tajoConfObj; |
| try { |
| checkAccessControlOnTajoPaths(tajoConf); |
| |
| result.setReturnCode(EvaluationResultCode.OK); |
| } catch (Exception e) { |
| result.setReturnCode(EvaluationResultCode.ERROR); |
| result.setMessage("Current User cannot access to this filesystem."); |
| result.setThrowable(e); |
| } |
| } else { |
| result.setReturnCode(EvaluationResultCode.ERROR); |
| result.setMessage("Tajo Configuration is null or not a Configuration Type."); |
| } |
| |
| return result; |
| } |
| |
| } |