| /** |
| * 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.security.authorize; |
| |
| import java.security.Permission; |
| |
| import org.apache.hadoop.ipc.VersionedProtocol; |
| |
| /** |
| * {@link Permission} to initiate a connection to a given service. |
| */ |
| public class ConnectionPermission extends Permission { |
| |
| private static final long serialVersionUID = 1L; |
| private final Class<?> protocol; |
| |
| /** |
| * {@link ConnectionPermission} for a given service. |
| * @param protocol service to be accessed |
| */ |
| public ConnectionPermission(Class<?> protocol) { |
| super(protocol.getName()); |
| this.protocol = protocol; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof ConnectionPermission) { |
| return protocol == ((ConnectionPermission)obj).protocol; |
| } |
| return false; |
| } |
| |
| @Override |
| public String getActions() { |
| return "ALLOW"; |
| } |
| |
| @Override |
| public int hashCode() { |
| return protocol.hashCode(); |
| } |
| |
| @Override |
| public boolean implies(Permission permission) { |
| if (permission instanceof ConnectionPermission) { |
| ConnectionPermission that = (ConnectionPermission)permission; |
| if (that.protocol.equals(VersionedProtocol.class)) { |
| return true; |
| } |
| return this.protocol.equals(that.protocol); |
| } |
| return false; |
| } |
| |
| public String toString() { |
| return "ConnectionPermission(" + protocol.getName() + ")"; |
| } |
| } |