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/*
 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package com.sun.tools.attach;

/**
 * When a {@link java.lang.SecurityManager SecurityManager} set, this
 * is the permission which will be checked when code invokes {@link
 * VirtualMachine#attach VirtalMachine.attach} to attach to a target virtual
 * machine.
 * This permission is also checked when an {@link
 * com.sun.tools.attach.spi.AttachProvider AttachProvider} is created. 

* *

An AttachPermission object contains a name (also referred * to as a "target name") but no actions list; you either have the * named permission or you don't. * The following table provides a summary description of what the * permission allows, and discusses the risks of granting code the * permission. *

*

* * * * * * * * * * * * * * * * * * *
Permission Target NameWhat the Permission AllowsRisks of Allowing this Permission
attachVirtualMachineAbility to attach to another Java virtual machine and load agents * into that VM. * This allows an attacker to control the target VM which can potentially * cause it to misbehave. *
createAttachProviderAbility to create an AttachProvider instance. * This allows an attacker to create an AttachProvider which can * potentially be used to attach to other Java virtual machines. *
*

* Programmers do not normally create AttachPermission objects directly. * Instead they are created by the security policy code based on reading * the security policy file. * * @see com.sun.tools.attach.VirtualMachine * @see com.sun.tools.attach.spi.AttachProvider */ public final class AttachPermission extends java.security.BasicPermission { /** use serialVersionUID for interoperability */ static final long serialVersionUID = -4619447669752976181L; /** * Constructs a new AttachPermission object. * * @param name Permission name. Must be either "attachVirtualMachine", * or "createAttachProvider". * * @throws NullPointerException if name is null. * @throws IllegalArgumentException if the name is invalid. */ public AttachPermission(String name) { super(name); if (!name.equals("attachVirtualMachine") && !name.equals("createAttachProvider")) { throw new IllegalArgumentException("name: " + name); } } /** * Constructs a new AttachPermission object. * * @param name Permission name. Must be either "attachVirtualMachine", * or "createAttachProvider". * * @param actions Not used and should be null, or * the empty string. * * @throws NullPointerException if name is null. * @throws IllegalArgumentException if arguments are invalid. */ public AttachPermission(String name, String actions) { super(name); if (!name.equals("attachVirtualMachine") && !name.equals("createAttachProvider")) { throw new IllegalArgumentException("name: " + name); } if (actions != null && actions.length() > 0) { throw new IllegalArgumentException("actions: " + actions); } } }





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