diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/jdk.attach/share/classes/com/sun/tools/attach/AttachPermission.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/jdk.attach/share/classes/com/sun/tools/attach/AttachPermission.java Tue Sep 12 19:03:39 2017 +0200 @@ -0,0 +1,126 @@ +/* + * Copyright (c) 2005, 2017, 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). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +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 VirtualMachine.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. + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + *
Table shows permission + * target name, what the permission allows, and associated risks
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); + } + } +}