J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 4893489 |
| 27 | * @summary Subject.doAs not thread-safe against changes to principals |
| 28 | */ |
| 29 | |
| 30 | import java.security.Principal; |
| 31 | import java.security.PrivilegedAction; |
| 32 | import java.util.Collections; |
| 33 | import java.util.Set; |
| 34 | import javax.security.auth.Subject; |
| 35 | import javax.security.auth.x500.X500Principal; |
| 36 | |
| 37 | public class Synch { |
| 38 | public static void main(String[] args) { |
| 39 | Subject subject = new Subject(); |
| 40 | final Set principals = subject.getPrincipals(); |
| 41 | principals.add(new X500Principal("CN=Alice")); |
| 42 | new Thread() { |
| 43 | { setDaemon(true); } |
| 44 | public void run() { |
| 45 | Principal last = new X500Principal("CN=Bob"); |
| 46 | for (int i = 0; true; i++) { |
| 47 | Principal next = new X500Principal("CN=Bob" + i); |
| 48 | principals.add(next); |
| 49 | principals.remove(last); |
| 50 | last = next; |
| 51 | } |
| 52 | } |
| 53 | }.start(); |
| 54 | for (int i = 0; i < 1000; i++) { |
| 55 | Subject.doAs( |
| 56 | subject, |
| 57 | new PrivilegedAction() { |
| 58 | public Object run() { |
| 59 | return Subject.doAs( |
| 60 | new Subject(true, |
| 61 | Collections.singleton( |
| 62 | new X500Principal("CN=Claire")), |
| 63 | Collections.EMPTY_SET, |
| 64 | Collections.EMPTY_SET), |
| 65 | new PrivilegedAction() { |
| 66 | public Object run() { |
| 67 | return null; |
| 68 | } |
| 69 | }); |
| 70 | } |
| 71 | }); |
| 72 | } |
| 73 | } |
| 74 | } |