author | khazra |
Fri, 02 Mar 2012 13:48:43 -0800 | |
changeset 12040 | 558b0e0d5910 |
parent 5506 | 202f599c92aa |
child 14342 | 8435a30053c1 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.rmi.rmid; |
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import java.security.*; |
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import java.io.*; |
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import java.util.*; |
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/** |
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* The ExecPermission class represents permission for rmid to execute |
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* a specific command to launch an activation group. An ExecPermission |
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* consists of a pathname of a command to launch an activation group. |
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* <P> |
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* Pathname is the pathname of the file or directory to grant rmid |
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* execute permission. A pathname that ends in "/*" (where "/" is |
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* the file separator character, <code>File.separatorChar</code>) indicates |
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* all the files and directories contained in that directory. A pathname |
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* that ends with "/-" indicates (recursively) all files |
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* and subdirectories contained in that directory. A pathname consisting of |
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* the special token "<<ALL FILES>>" matches <bold>any</bold> file. |
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* <P> |
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* Note: A pathname consisting of a single "*" indicates all the files |
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* in the current directory, while a pathname consisting of a single "-" |
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* indicates all the files in the current directory and |
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* (recursively) all files and subdirectories contained in the current |
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* directory. |
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* <P> |
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* |
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* |
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* @author Ann Wollrath |
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* |
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* @serial exclude |
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*/ |
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public final class ExecPermission extends Permission |
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{ |
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/** |
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* UID for serialization |
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*/ |
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private static final long serialVersionUID = -6208470287358147919L; |
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private transient FilePermission fp; |
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/** |
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* Creates a new ExecPermission object with the specified path. |
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* <i>path</i> is the pathname of a file or directory. |
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* |
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* <p>A pathname that ends in "/*" (where "/" is |
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* the file separator character, <code>File.separatorChar</code>) indicates |
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* a directory and all the files contained in that directory. A pathname |
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* that ends with "/-" indicates a directory and (recursively) all files |
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* and subdirectories contained in that directory. The special pathname |
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* "<<ALL FILES>>" matches all files. |
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* |
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* <p>A pathname consisting of a single "*" indicates all the files |
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* in the current directory, while a pathname consisting of a single "-" |
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* indicates all the files in the current directory and |
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* (recursively) all files and subdirectories contained in the current |
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* directory. |
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* |
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* @param path the pathname of the file/directory. |
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*/ |
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public ExecPermission(String path) { |
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super(path); |
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init(path); |
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} |
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/** |
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* Creates a new ExecPermission object with the specified path. |
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* <i>path</i> is the pathname of a file or directory. |
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* |
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* <p>A pathname that ends in "/*" (where "/" is |
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* the file separator character, <code>File.separatorChar</code>) indicates |
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* a directory and all the files contained in that directory. A pathname |
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* that ends with "/-" indicates a directory and (recursively) all files |
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* and subdirectories contained in that directory. The special pathname |
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* "<<ALL FILES>>" matches all files. |
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* |
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* <p>A pathname consisting of a single "*" indicates all the files |
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* in the current directory, while a pathname consisting of a single "-" |
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* indicates all the files in the current directory and |
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* (recursively) all files and subdirectories contained in the current |
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* directory. |
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* |
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* @param path the pathname of the file/directory. |
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* @param actions the action string (unused) |
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*/ |
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public ExecPermission(String path, String actions) { |
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this(path); |
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} |
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/** |
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* Checks if this ExecPermission object "implies" the specified permission. |
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* <P> |
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* More specifically, this method returns true if:<p> |
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* <ul> |
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* <li> <i>p</i> is an instanceof ExecPermission,<p> and |
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* <li> <i>p</i>'s pathname is implied by this object's |
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* pathname. For example, "/tmp/*" implies "/tmp/foo", since |
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* "/tmp/*" encompasses the "/tmp" directory and all files in that |
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* directory, including the one named "foo". |
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* </ul> |
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* @param p the permission to check against. |
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* |
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* @return true if the specified permission is implied by this object, |
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* false if not. |
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*/ |
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public boolean implies(Permission p) { |
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if (!(p instanceof ExecPermission)) |
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return false; |
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ExecPermission that = (ExecPermission) p; |
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return fp.implies(that.fp); |
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} |
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/** |
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* Checks two ExecPermission objects for equality. |
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* Checks that <i>obj</i>'s class is the same as this object's class |
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* and has the same name as this object. |
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* <P> |
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* @param obj the object we are testing for equality with this object. |
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* @return true if <i>obj</i> is an ExecPermission, and has the same |
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* pathname as this ExecPermission object, false otherwise. |
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*/ |
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public boolean equals(Object obj) { |
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if (obj == this) |
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return true; |
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if (! (obj instanceof ExecPermission)) |
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return false; |
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ExecPermission that = (ExecPermission) obj; |
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return fp.equals(that.fp); |
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} |
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/** |
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* Returns the hash code value for this object. |
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* |
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* @return a hash code value for this object. |
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*/ |
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public int hashCode() { |
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return this.fp.hashCode(); |
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} |
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/** |
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* Returns the canonical string representation of the actions. |
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* |
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* @return the canonical string representation of the actions. |
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*/ |
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public String getActions() { |
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return ""; |
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} |
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/** |
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* Returns a new PermissionCollection object for storing |
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* ExecPermission objects. |
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* <p> |
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* A ExecPermissionCollection stores a collection of |
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* ExecPermission permissions. |
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* |
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* <p>ExecPermission objects must be stored in a manner that allows |
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* them to be inserted in any order, but that also enables the |
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* PermissionCollection <code>implies</code> method |
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* to be implemented in an efficient (and consistent) manner. |
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* |
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* @return a new PermissionCollection object suitable for |
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* storing ExecPermissions. |
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*/ |
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public PermissionCollection newPermissionCollection() { |
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return new ExecPermissionCollection(); |
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} |
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/** |
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* readObject is called to restore the state of the ExecPermission |
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* from a stream. |
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*/ |
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private synchronized void readObject(java.io.ObjectInputStream s) |
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throws IOException, ClassNotFoundException |
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{ |
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s.defaultReadObject(); |
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// init is called to initialize the rest of the values. |
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init(getName()); |
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} |
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/** |
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* Initialize a ExecPermission object. Common to all constructors. |
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* Also called during de-serialization. |
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*/ |
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private void init(String path) { |
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this.fp = new FilePermission(path, "execute"); |
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} |
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/** |
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* A ExecPermissionCollection stores a collection |
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* of ExecPermission permissions. ExecPermission objects |
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* must be stored in a manner that allows them to be inserted in any |
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* order, but enable the implies function to evaluate the implies |
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* method in an efficient (and consistent) manner. |
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* |
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* @serial include |
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*/ |
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private static class ExecPermissionCollection |
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extends PermissionCollection |
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implements java.io.Serializable |
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{ |
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12040
558b0e0d5910
7146763: Warnings cleanup in the sun.rmi and related packages
khazra
parents:
5506
diff
changeset
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private Vector<Permission> permissions; |
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private static final long serialVersionUID = -3352558508888368273L; |
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/** |
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* Create an empty ExecPermissionCollection. |
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*/ |
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public ExecPermissionCollection() { |
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khazra
parents:
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diff
changeset
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permissions = new Vector<>(); |
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} |
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/** |
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* Adds a permission to the collection. |
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* |
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* @param permission the Permission object to add. |
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* |
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* @exception IllegalArgumentException - if the permission is not a |
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* ExecPermission |
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* |
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* @exception SecurityException - if this ExecPermissionCollection |
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* object has been marked readonly |
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*/ |
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public void add(Permission permission) |
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{ |
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if (! (permission instanceof ExecPermission)) |
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throw new IllegalArgumentException("invalid permission: "+ |
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permission); |
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if (isReadOnly()) |
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throw new SecurityException("attempt to add a Permission to a readonly PermissionCollection"); |
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permissions.addElement(permission); |
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} |
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/** |
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* Check and see if this set of permissions implies the permissions |
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* expressed in "permission". |
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* |
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* @param p the Permission object to compare |
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* |
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* @return true if "permission" is a proper subset of a permission in |
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* the set, false if not. |
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*/ |
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public boolean implies(Permission permission) |
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{ |
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if (! (permission instanceof ExecPermission)) |
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return false; |
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khazra
parents:
5506
diff
changeset
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Enumeration<Permission> e = permissions.elements(); |
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while (e.hasMoreElements()) { |
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khazra
parents:
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diff
changeset
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ExecPermission x = (ExecPermission)e.nextElement(); |
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if (x.implies(permission)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns an enumeration of all the ExecPermission objects in the |
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* container. |
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* |
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* @return an enumeration of all the ExecPermission objects. |
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*/ |
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558b0e0d5910
7146763: Warnings cleanup in the sun.rmi and related packages
khazra
parents:
5506
diff
changeset
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public Enumeration<Permission> elements() |
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{ |
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return permissions.elements(); |
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} |
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} |
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} |