/* * Copyright (c) 2003, 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). * * 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.jmx.remote.security;import java.security.AccessControlContext;import java.security.AccessController;import java.security.CodeSource;import java.security.Permissions;import java.security.ProtectionDomain;import javax.security.auth.Subject;import javax.security.auth.SubjectDomainCombiner;/** * <p>This class represents an extension to the {@link SubjectDomainCombiner} * and is used to add a new {@link ProtectionDomain}, comprised of a null * codesource/signers and an empty permission set, to the access control * context with which this combiner is combined.</p> * * <p>When the {@link #combine} method is called the {@link ProtectionDomain} * is augmented with the permissions granted to the set of principals present * in the supplied {@link Subject}.</p> */public class JMXSubjectDomainCombiner extends SubjectDomainCombiner { public JMXSubjectDomainCombiner(Subject s) { super(s); } public ProtectionDomain[] combine(ProtectionDomain[] current, ProtectionDomain[] assigned) { // Add a new ProtectionDomain with the null codesource/signers, and // the empty permission set, to the end of the array containing the // 'current' protections domains, i.e. the ones that will be augmented // with the permissions granted to the set of principals present in // the supplied subject. // ProtectionDomain[] newCurrent; if (current == null || current.length == 0) { newCurrent = new ProtectionDomain[1]; newCurrent[0] = pdNoPerms; } else { newCurrent = new ProtectionDomain[current.length + 1]; for (int i = 0; i < current.length; i++) { newCurrent[i] = current[i]; } newCurrent[current.length] = pdNoPerms; } return super.combine(newCurrent, assigned); } /** * A null CodeSource. */ private static final CodeSource nullCodeSource = new CodeSource(null, (java.security.cert.Certificate[]) null); /** * A ProtectionDomain with a null CodeSource and an empty permission set. */ private static final ProtectionDomain pdNoPerms = new ProtectionDomain(nullCodeSource, new Permissions()); /** * Get the current AccessControlContext combined with the supplied subject. */ public static AccessControlContext getContext(Subject subject) { return new AccessControlContext(AccessController.getContext(), new JMXSubjectDomainCombiner(subject)); } /** * Get the AccessControlContext of the domain combiner created with * the supplied subject, i.e. an AccessControlContext with the domain * combiner created with the supplied subject and where the caller's * context has been removed. */ public static AccessControlContext getDomainCombinerContext(Subject subject) { return new AccessControlContext( new AccessControlContext(new ProtectionDomain[0]), new JMXSubjectDomainCombiner(subject)); }}
/*
* Copyright (c) 2003, 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).
*
* 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.jmx.remote.security;
import java.security.AccessControlContext;
import java.security.AccessController;
import java.security.CodeSource;
import java.security.Permissions;
import java.security.ProtectionDomain;
import javax.security.auth.Subject;
import javax.security.auth.SubjectDomainCombiner;
/**
* <p>This class represents an extension to the {@link SubjectDomainCombiner}
* and is used to add a new {@link ProtectionDomain}, comprised of a null
* codesource/signers and an empty permission set, to the access control
* context with which this combiner is combined.</p>
*
* <p>When the {@link #combine} method is called the {@link ProtectionDomain}
* is augmented with the permissions granted to the set of principals present
* in the supplied {@link Subject}.</p>
*/
public class JMXSubjectDomainCombiner extends SubjectDomainCombiner {
public JMXSubjectDomainCombiner(Subject s) {
super(s);
}
public ProtectionDomain[] combine(ProtectionDomain[] current,
ProtectionDomain[] assigned) {
// Add a new ProtectionDomain with the null codesource/signers, and
// the empty permission set, to the end of the array containing the
// 'current' protections domains, i.e. the ones that will be augmented
// with the permissions granted to the set of principals present in
// the supplied subject.
//
ProtectionDomain[] newCurrent;
if (current == null || current.length == 0) {
newCurrent = new ProtectionDomain[1];
newCurrent[0] = pdNoPerms;
} else {
newCurrent = new ProtectionDomain[current.length + 1];
for (int i = 0; i < current.length; i++) {
newCurrent[i] = current[i];
}
newCurrent[current.length] = pdNoPerms;
}
return super.combine(newCurrent, assigned);
}
/**
* A null CodeSource.
*/
private static final CodeSource nullCodeSource =
new CodeSource(null, (java.security.cert.Certificate[]) null);
/**
* A ProtectionDomain with a null CodeSource and an empty permission set.
*/
private static final ProtectionDomain pdNoPerms =
new ProtectionDomain(nullCodeSource, new Permissions());
/**
* Get the current AccessControlContext combined with the supplied subject.
*/
public static AccessControlContext getContext(Subject subject) {
return new AccessControlContext(AccessController.getContext(),
new JMXSubjectDomainCombiner(subject));
}
/**
* Get the AccessControlContext of the domain combiner created with
* the supplied subject, i.e. an AccessControlContext with the domain
* combiner created with the supplied subject and where the caller's
* context has been removed.
*/
public static AccessControlContext
getDomainCombinerContext(Subject subject) {
return new AccessControlContext(
new AccessControlContext(new ProtectionDomain[0]),
new JMXSubjectDomainCombiner(subject));
}
}