0N/A/*
2362N/A * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/*
0N/A * @test
0N/A * @bug 4893489
0N/A * @summary Subject.doAs not thread-safe against changes to principals
0N/A */
0N/A
0N/Aimport java.security.Principal;
0N/Aimport java.security.PrivilegedAction;
0N/Aimport java.util.Collections;
0N/Aimport java.util.Set;
0N/Aimport javax.security.auth.Subject;
0N/Aimport javax.security.auth.x500.X500Principal;
0N/A
0N/Apublic class Synch {
0N/A public static void main(String[] args) {
0N/A Subject subject = new Subject();
0N/A final Set principals = subject.getPrincipals();
0N/A principals.add(new X500Principal("CN=Alice"));
0N/A new Thread() {
0N/A { setDaemon(true); }
0N/A public void run() {
0N/A Principal last = new X500Principal("CN=Bob");
0N/A for (int i = 0; true; i++) {
0N/A Principal next = new X500Principal("CN=Bob" + i);
0N/A principals.add(next);
0N/A principals.remove(last);
0N/A last = next;
0N/A }
0N/A }
0N/A }.start();
0N/A for (int i = 0; i < 1000; i++) {
0N/A Subject.doAs(
0N/A subject,
0N/A new PrivilegedAction() {
0N/A public Object run() {
0N/A return Subject.doAs(
0N/A new Subject(true,
0N/A Collections.singleton(
0N/A new X500Principal("CN=Claire")),
0N/A Collections.EMPTY_SET,
0N/A Collections.EMPTY_SET),
0N/A new PrivilegedAction() {
0N/A public Object run() {
0N/A return null;
0N/A }
0N/A });
0N/A }
0N/A });
0N/A }
0N/A }
0N/A}