001 /** 002 * 003 * Copyright 2004 Hiram Chirino 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 **/ 018 package org.activemq.security.jassjacc; 019 020 import java.io.Serializable; 021 import java.security.Permission; 022 import java.util.Arrays; 023 import java.util.HashSet; 024 import java.util.Set; 025 026 /** 027 * Abstract class to make it easier to JMS Permissions. 028 * 029 * @version $Revision: 1.1.1.1 $ 030 */ 031 abstract public class AbstractJMSPermission extends Permission implements Serializable { 032 033 private String action; 034 private int cachedHashCode; 035 private HashSet actions; 036 037 /** 038 * @param name 039 */ 040 public AbstractJMSPermission(String name, String action) { 041 super(name); 042 String listOfActions[]=normalize(action); 043 this.actions = new HashSet( Arrays.asList(listOfActions) ); 044 if( !getValidSetOfActions().containsAll(actions) ) { 045 throw new IllegalArgumentException("The action set ("+actions+") is invalid. Valid set of actions are: "+getValidSetOfActions()); 046 } 047 this.action=join(listOfActions); 048 } 049 050 abstract public Set getValidSetOfActions(); 051 052 static private String[] normalize(String action) { 053 String[] strings = action.split(",", -1); 054 Arrays.sort(strings); 055 return strings; 056 } 057 058 static private String join(String action[]) { 059 StringBuffer buff = new StringBuffer(); 060 for (int i = 0; i < action.length; i++) { 061 if( i!=0 ) 062 buff.append(","); 063 buff.append(action[i]); 064 } 065 return buff.toString(); 066 } 067 068 /** 069 * @see java.security.Permission#hashCode() 070 */ 071 public int hashCode() { 072 if (cachedHashCode == 0) { 073 cachedHashCode = getName().hashCode() ^ action.hashCode(); 074 } 075 return cachedHashCode; 076 } 077 078 /** 079 * @see java.security.Permission#equals(java.lang.Object) 080 */ 081 public boolean equals(Object o) { 082 if (o == null || !(o instanceof AbstractJMSPermission)) return false; 083 084 AbstractJMSPermission other = (AbstractJMSPermission) o; 085 return getName().equals(other.getName()) && action.equals(other.action); 086 } 087 088 /** 089 * @see java.security.Permission#getActions() 090 */ 091 public String getActions() { 092 return action; 093 } 094 095 /** 096 * @see java.security.Permission#implies(java.security.Permission) 097 */ 098 public boolean implies(Permission permission) { 099 if (permission == null || !(permission instanceof AbstractJMSPermission)) return false; 100 101 AbstractJMSPermission other = (AbstractJMSPermission) permission; 102 return getName().equals(other.getName()) && other.actions.containsAll(this.actions); 103 } 104 } 105