/*
* Copyright (c) 2003, 2011, 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.
*
* 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.
*/
/*
* @test
* @bug 4893489
* @summary Subject.doAs not thread-safe against changes to principals
*/
import java.security.Principal;
import java.security.PrivilegedAction;
import java.util.Collections;
import java.util.Set;
import javax.security.auth.Subject;
import javax.security.auth.x500.X500Principal;
public class Synch {
static volatile boolean finished = false;
public static void main(String[] args) {
Subject subject = new Subject();
final Set principals = subject.getPrincipals();
principals.add(new X500Principal("CN=Alice"));
new Thread() {
public void run() {
Principal last = new X500Principal("CN=Bob");
for (int i = 0; !finished; i++) {
Principal next = new X500Principal("CN=Bob" + i);
principals.add(next);
principals.remove(last);
last = next;
}
}
}.start();
for (int i = 0; i < 1000; i++) {
Subject.doAs(
subject,
new PrivilegedAction() {
public Object run() {
return Subject.doAs(
new Subject(true,
Collections.singleton(
new X500Principal("CN=Claire")),
Collections.EMPTY_SET,
Collections.EMPTY_SET),
new PrivilegedAction() {
public Object run() {
return null;
}
});
}
});
}
finished = true;
}
}