001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.security.visibility;
019
020import java.util.ArrayList;
021import java.util.HashSet;
022import java.util.List;
023import java.util.Set;
024import org.apache.hadoop.conf.Configuration;
025import org.apache.hadoop.hbase.security.User;
026import org.apache.yetus.audience.InterfaceAudience;
027import org.slf4j.Logger;
028import org.slf4j.LoggerFactory;
029
030/**
031 * If the passed in authorization is null, then this ScanLabelGenerator feeds the set of predefined
032 * authorization labels for the given user. That is the set defined by the admin using the
033 * VisibilityClient admin interface or the set_auths shell command. Otherwise the passed in
034 * authorization labels are returned with no change. Note: This SLG should not be used alone because
035 * it does not check the passed in authorization labels against what the user is authorized for.
036 */
037@InterfaceAudience.Private
038public class FeedUserAuthScanLabelGenerator implements ScanLabelGenerator {
039
040  private static final Logger LOG = LoggerFactory.getLogger(FeedUserAuthScanLabelGenerator.class);
041
042  private Configuration conf;
043  private VisibilityLabelsCache labelsCache;
044
045  public FeedUserAuthScanLabelGenerator() {
046    this.labelsCache = VisibilityLabelsCache.get();
047  }
048
049  @Override
050  public void setConf(Configuration conf) {
051    this.conf = conf;
052  }
053
054  @Override
055  public Configuration getConf() {
056    return this.conf;
057  }
058
059  @Override
060  public List<String> getLabels(User user, Authorizations authorizations) {
061    if (
062      authorizations == null || authorizations.getLabels() == null
063        || authorizations.getLabels().isEmpty()
064    ) {
065      String userName = user.getShortName();
066      Set<String> auths = new HashSet<>();
067      auths.addAll(this.labelsCache.getUserAuths(userName));
068      auths.addAll(this.labelsCache.getGroupAuths(user.getGroupNames()));
069      return new ArrayList<>(auths);
070    }
071    return authorizations.getLabels();
072  }
073
074}