[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.security.authorize; |
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| 19 | |
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| 20 | import java.security.Permission; |
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| 21 | |
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| 22 | import org.apache.hadoop.ipc.VersionedProtocol; |
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| 23 | |
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| 24 | /** |
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| 25 | * {@link Permission} to initiate a connection to a given service. |
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| 26 | */ |
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| 27 | public class ConnectionPermission extends Permission { |
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| 28 | |
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| 29 | private static final long serialVersionUID = 1L; |
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| 30 | private final Class<?> protocol; |
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| 31 | |
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| 32 | /** |
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| 33 | * {@link ConnectionPermission} for a given service. |
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| 34 | * @param protocol service to be accessed |
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| 35 | */ |
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| 36 | public ConnectionPermission(Class<?> protocol) { |
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| 37 | super(protocol.getName()); |
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| 38 | this.protocol = protocol; |
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| 39 | } |
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| 40 | |
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| 41 | @Override |
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| 42 | public boolean equals(Object obj) { |
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| 43 | if (obj instanceof ConnectionPermission) { |
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| 44 | return protocol == ((ConnectionPermission)obj).protocol; |
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| 45 | } |
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| 46 | return false; |
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| 47 | } |
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| 48 | |
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| 49 | @Override |
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| 50 | public String getActions() { |
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| 51 | return "ALLOW"; |
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| 52 | } |
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| 53 | |
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| 54 | @Override |
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| 55 | public int hashCode() { |
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| 56 | return protocol.hashCode(); |
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| 57 | } |
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| 58 | |
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| 59 | @Override |
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| 60 | public boolean implies(Permission permission) { |
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| 61 | if (permission instanceof ConnectionPermission) { |
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| 62 | ConnectionPermission that = (ConnectionPermission)permission; |
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| 63 | if (that.protocol.equals(VersionedProtocol.class)) { |
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| 64 | return true; |
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| 65 | } |
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| 66 | return this.protocol.equals(that.protocol); |
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| 67 | } |
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| 68 | return false; |
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| 69 | } |
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| 70 | |
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| 71 | public String toString() { |
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| 72 | return "ConnectionPermission(" + protocol.getName() + ")"; |
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| 73 | } |
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| 74 | } |
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