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 */ 018 019package org.apache.hadoop.security.authorize; 020 021import org.apache.hadoop.classification.InterfaceAudience; 022import org.apache.hadoop.classification.InterfaceStability; 023import org.apache.hadoop.conf.Configurable; 024import org.apache.hadoop.security.UserGroupInformation; 025 026@InterfaceStability.Unstable 027@InterfaceAudience.Public 028public interface ImpersonationProvider extends Configurable { 029 030 031 /** 032 * Specifies the configuration prefix for the proxy user properties and 033 * initializes the provider. 034 * 035 * @param configurationPrefix the configuration prefix for the proxy user 036 * properties 037 */ 038 public void init(String configurationPrefix); 039 040 /** 041 * Authorize the superuser which is doing doAs 042 * 043 * @param user ugi of the effective or proxy user which contains a real user 044 * @param remoteAddress the ip address of client 045 * @throws AuthorizationException 046 */ 047 public void authorize(UserGroupInformation user, String remoteAddress) 048 throws AuthorizationException; 049}