| /* |
| * Copyright (c) 2016, 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. |
| */ |
| |
| import java.security.Provider; |
| import java.security.SecureRandom; |
| import java.security.SecureRandomSpi; |
| import java.util.Map; |
| |
| /* |
| * @test |
| * @bug 7004967 |
| * @summary SecureRandom should be more explicit about threading |
| */ |
| public class ThreadSafe { |
| public static void main(String[] args) throws Exception { |
| Provider p = new P(); |
| NoSync.test(SecureRandom.getInstance("S1", p), 5, 5); |
| try { |
| NoSync.test(SecureRandom.getInstance("S2", p), 5, 5); |
| throw new Exception("Failed"); |
| } catch (RuntimeException re) { |
| // Good |
| } |
| NoSync.test(SecureRandom.getInstance("S3", p), 5, 5); |
| try { |
| NoSync.test(SecureRandom.getInstance("S4", p), 5, 5); |
| throw new Exception("Failed"); |
| } catch (RuntimeException re) { |
| // Good |
| } |
| } |
| |
| public static class P extends Provider { |
| public P() { |
| |
| super("P", 1.0d, "Haha"); |
| |
| // Good. No attribute. |
| put("SecureRandom.S1", S.class.getName()); |
| |
| // Bad. Boasting ThreadSafe but isn't |
| put("SecureRandom.S2", S.class.getName()); |
| put("SecureRandom.S2 ThreadSafe", "true"); |
| |
| // Good. No attribute. |
| putService(new Service(this, "SecureRandom", "S3", |
| S.class.getName(), null, null)); |
| |
| // Bad. Boasting ThreadSafe but isn't |
| putService(new Service(this, "SecureRandom", "S4", |
| S.class.getName(), null, Map.of("ThreadSafe", "true"))); |
| } |
| } |
| |
| // This implementation is not itself thread safe. |
| public static class S extends SecureRandomSpi { |
| @java.lang.Override |
| protected void engineSetSeed(byte[] seed) { |
| return; |
| } |
| |
| private volatile boolean inCall = false; |
| @Override |
| protected void engineNextBytes(byte[] bytes) { |
| if (inCall) { |
| throw new RuntimeException("IN CALL"); |
| } |
| inCall = true; |
| try { |
| Thread.sleep(100); |
| } catch (Exception e) { |
| // OK |
| } |
| inCall = false; |
| } |
| |
| @Override |
| protected byte[] engineGenerateSeed(int numBytes) { |
| return new byte[numBytes]; |
| } |
| } |
| } |