103 lines
3.3 KiB
Java
103 lines
3.3 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.security.Provider;
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import java.security.SecureRandom;
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import java.security.SecureRandomSpi;
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import java.util.Map;
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/*
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* @test
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* @bug 7004967
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* @summary SecureRandom should be more explicit about threading
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*/
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public class ThreadSafe {
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public static void main(String[] args) throws Exception {
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Provider p = new P();
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NoSync.test(SecureRandom.getInstance("S1", p), 5, 5);
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try {
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NoSync.test(SecureRandom.getInstance("S2", p), 5, 5);
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throw new Exception("Failed");
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} catch (RuntimeException re) {
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// Good
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}
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NoSync.test(SecureRandom.getInstance("S3", p), 5, 5);
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try {
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NoSync.test(SecureRandom.getInstance("S4", p), 5, 5);
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throw new Exception("Failed");
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} catch (RuntimeException re) {
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// Good
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}
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}
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public static class P extends Provider {
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public P() {
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super("P", 1.0d, "Haha");
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// Good. No attribute.
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put("SecureRandom.S1", S.class.getName());
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// Bad. Boasting ThreadSafe but isn't
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put("SecureRandom.S2", S.class.getName());
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put("SecureRandom.S2 ThreadSafe", "true");
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// Good. No attribute.
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putService(new Service(this, "SecureRandom", "S3",
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S.class.getName(), null, null));
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// Bad. Boasting ThreadSafe but isn't
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putService(new Service(this, "SecureRandom", "S4",
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S.class.getName(), null, Map.of("ThreadSafe", "true")));
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}
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}
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// This implementation is not itself thread safe.
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public static class S extends SecureRandomSpi {
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@java.lang.Override
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protected void engineSetSeed(byte[] seed) {
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return;
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}
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private volatile boolean inCall = false;
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@Override
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protected void engineNextBytes(byte[] bytes) {
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if (inCall) {
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throw new RuntimeException("IN CALL");
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}
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inCall = true;
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try {
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Thread.sleep(100);
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} catch (Exception e) {
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// OK
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}
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inCall = false;
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}
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@Override
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protected byte[] engineGenerateSeed(int numBytes) {
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return new byte[numBytes];
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}
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}
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}
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