J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.net; |
| 27 | |
| 28 | import java.security.*; |
| 29 | import java.util.Enumeration; |
| 30 | import java.util.Hashtable; |
| 31 | import java.util.StringTokenizer; |
| 32 | |
| 33 | /** |
| 34 | * This class is for various network permissions. |
| 35 | * A NetPermission contains a name (also referred to as a "target name") but |
| 36 | * no actions list; you either have the named permission |
| 37 | * or you don't. |
| 38 | * <P> |
| 39 | * The target name is the name of the network permission (see below). The naming |
| 40 | * convention follows the hierarchical property naming convention. |
| 41 | * Also, an asterisk |
| 42 | * may appear at the end of the name, following a ".", or by itself, to |
| 43 | * signify a wildcard match. For example: "foo.*" or "*" is valid, |
| 44 | * "*foo" or "a*b" is not valid. |
| 45 | * <P> |
| 46 | * The following table lists all the possible NetPermission target names, |
| 47 | * and for each provides a description of what the permission allows |
| 48 | * and a discussion of the risks of granting code the permission. |
| 49 | * <P> |
| 50 | * |
| 51 | * <table border=1 cellpadding=5 summary="Permission target name, what the permission allows, and associated risks"> |
| 52 | * <tr> |
| 53 | * <th>Permission Target Name</th> |
| 54 | * <th>What the Permission Allows</th> |
| 55 | * <th>Risks of Allowing this Permission</th> |
| 56 | * </tr> |
| 57 | * |
| 58 | * <tr> |
| 59 | * <td>setDefaultAuthenticator</td> |
| 60 | * <td>The ability to set the |
| 61 | * way authentication information is retrieved when |
| 62 | * a proxy or HTTP server asks for authentication</td> |
| 63 | * <td>Malicious |
| 64 | * code can set an authenticator that monitors and steals user |
| 65 | * authentication input as it retrieves the input from the user.</td> |
| 66 | * </tr> |
| 67 | * |
| 68 | * <tr> |
| 69 | * <td>requestPasswordAuthentication</td> |
| 70 | * <td>The ability |
| 71 | * to ask the authenticator registered with the system for |
| 72 | * a password</td> |
| 73 | * <td>Malicious code may steal this password.</td> |
| 74 | * </tr> |
| 75 | * |
| 76 | * <tr> |
| 77 | * <td>specifyStreamHandler</td> |
| 78 | * <td>The ability |
| 79 | * to specify a stream handler when constructing a URL</td> |
| 80 | * <td>Malicious code may create a URL with resources that it would |
| 81 | normally not have access to (like file:/foo/fum/), specifying a |
| 82 | stream handler that gets the actual bytes from someplace it does |
| 83 | have access to. Thus it might be able to trick the system into |
| 84 | creating a ProtectionDomain/CodeSource for a class even though |
| 85 | that class really didn't come from that location.</td> |
| 86 | * </tr> |
| 87 | * |
| 88 | * <tr> |
| 89 | * <td>setProxySelector</td> |
| 90 | * <td>The ability to set the proxy selector used to make decisions |
| 91 | * on which proxies to use when making network connections.</td> |
| 92 | * <td>Malicious code can set a ProxySelector that directs network |
| 93 | * traffic to an arbitrary network host.</td> |
| 94 | * </tr> |
| 95 | * |
| 96 | * <tr> |
| 97 | * <td>getProxySelector</td> |
| 98 | * <td>The ability to get the proxy selector used to make decisions |
| 99 | * on which proxies to use when making network connections.</td> |
| 100 | * <td>Malicious code can get a ProxySelector to discover proxy |
| 101 | * hosts and ports on internal networks, which could then become |
| 102 | * targets for attack.</td> |
| 103 | * </tr> |
| 104 | * |
| 105 | * <tr> |
| 106 | * <td>setCookieHandler</td> |
| 107 | * <td>The ability to set the cookie handler that processes highly |
| 108 | * security sensitive cookie information for an Http session.</td> |
| 109 | * <td>Malicious code can set a cookie handler to obtain access to |
| 110 | * highly security sensitive cookie information. Some web servers |
| 111 | * use cookies to save user private information such as access |
| 112 | * control information, or to track user browsing habit.</td> |
| 113 | * </tr> |
| 114 | * |
| 115 | * <tr> |
| 116 | * <td>getCookieHandler</td> |
| 117 | * <td>The ability to get the cookie handler that processes highly |
| 118 | * security sensitive cookie information for an Http session.</td> |
| 119 | * <td>Malicious code can get a cookie handler to obtain access to |
| 120 | * highly security sensitive cookie information. Some web servers |
| 121 | * use cookies to save user private information such as access |
| 122 | * control information, or to track user browsing habit.</td> |
| 123 | * </tr> |
| 124 | * |
| 125 | * <tr> |
| 126 | * <td>setResponseCache</td> |
| 127 | * <td>The ability to set the response cache that provides access to |
| 128 | * a local response cache.</td> |
| 129 | * <td>Malicious code getting access to the local response cache |
| 130 | * could access security sensitive information, or create false |
| 131 | * entries in the response cache.</td> |
| 132 | * </tr> |
| 133 | * |
| 134 | * <tr> |
| 135 | * <td>getResponseCache</td> |
| 136 | * <td>The ability to get the response cache that provides |
| 137 | * access to a local response cache.</td> |
| 138 | * <td>Malicious code getting access to the local response cache |
| 139 | * could access security sensitive information.</td> |
| 140 | * </tr> |
| 141 | * |
| 142 | * </table> |
| 143 | * |
| 144 | * @see java.security.BasicPermission |
| 145 | * @see java.security.Permission |
| 146 | * @see java.security.Permissions |
| 147 | * @see java.security.PermissionCollection |
| 148 | * @see java.lang.SecurityManager |
| 149 | * |
| 150 | * |
| 151 | * @author Marianne Mueller |
| 152 | * @author Roland Schemers |
| 153 | */ |
| 154 | |
| 155 | public final class NetPermission extends BasicPermission { |
| 156 | private static final long serialVersionUID = -8343910153355041693L; |
| 157 | |
| 158 | /** |
| 159 | * Creates a new NetPermission with the specified name. |
| 160 | * The name is the symbolic name of the NetPermission, such as |
| 161 | * "setDefaultAuthenticator", etc. An asterisk |
| 162 | * may appear at the end of the name, following a ".", or by itself, to |
| 163 | * signify a wildcard match. |
| 164 | * |
| 165 | * @param name the name of the NetPermission. |
| 166 | * |
| 167 | * @throws NullPointerException if <code>name</code> is <code>null</code>. |
| 168 | * @throws IllegalArgumentException if <code>name</code> is empty. |
| 169 | */ |
| 170 | |
| 171 | public NetPermission(String name) |
| 172 | { |
| 173 | super(name); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Creates a new NetPermission object with the specified name. |
| 178 | * The name is the symbolic name of the NetPermission, and the |
| 179 | * actions String is currently unused and should be null. |
| 180 | * |
| 181 | * @param name the name of the NetPermission. |
| 182 | * @param actions should be null. |
| 183 | * |
| 184 | * @throws NullPointerException if <code>name</code> is <code>null</code>. |
| 185 | * @throws IllegalArgumentException if <code>name</code> is empty. |
| 186 | */ |
| 187 | |
| 188 | public NetPermission(String name, String actions) |
| 189 | { |
| 190 | super(name, actions); |
| 191 | } |
| 192 | } |