79 lines
3.2 KiB
Java
79 lines
3.2 KiB
Java
/*
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* Copyright (c) 2020, 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 jdk.test.lib.util.JarUtils;
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import org.testng.Assert;
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import org.testng.annotations.Test;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.jar.JarFile;
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/**
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* @test
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* @bug 8242882
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* @summary Verify that opening a jar file with a large manifest throws an OutOfMemoryError
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* and not a NegativeArraySizeException
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* @library /test/lib
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* @run testng LargeManifestOOMTest
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*/
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public class LargeManifestOOMTest {
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// file will be created with size greater than Integer.MAX_VALUE
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private static final long MANIFEST_FILE_SIZE = Integer.MAX_VALUE + 1024L;
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/**
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* Creates a jar which has a large manifest file and then uses the {@link JarFile} to
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* {@link JarFile#getManifest() load the manifest}. The call to the {@link JarFile#getManifest()}
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* is then expected to throw a {@link OutOfMemoryError}
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*/
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@Test
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public void testOutOfMemoryError() throws Exception {
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final Path jarSourceRoot = Paths.get("jar-source");
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createLargeManifest(jarSourceRoot.resolve("META-INF"));
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final Path jarFilePath = Paths.get("oom-test.jar");
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JarUtils.createJarFile(jarFilePath.toAbsolutePath(), jarSourceRoot);
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final JarFile jar = new JarFile(jarFilePath.toFile());
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Assert.assertThrows(OutOfMemoryError.class, () -> jar.getManifest());
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}
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/**
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* Creates a {@code MANIFEST.MF}, whose content is {@link #MANIFEST_FILE_SIZE} in size,
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* in the {@code parentDir}
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*
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* @param parentDir The directory in which the MANIFEST.MF file will be created
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*/
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private static void createLargeManifest(final Path parentDir) throws IOException {
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Files.createDirectories(parentDir.toAbsolutePath());
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final Path manifestFile = parentDir.resolve("MANIFEST.MF");
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try (final RandomAccessFile largeManifest = new RandomAccessFile(manifestFile.toFile(), "rw")) {
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largeManifest.writeUTF("Manifest-Version: 1.0\n");
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largeManifest.writeUTF("OOM-Test: a\n");
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largeManifest.setLength(MANIFEST_FILE_SIZE);
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}
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System.out.println("Size of file " + manifestFile + " is " + manifestFile.toFile().length());
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}
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}
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