101 lines
4.4 KiB
Java
101 lines
4.4 KiB
Java
/*
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* Copyright (c) 2006, 2024, 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.io.BufferedOutputStream;
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import java.io.DataInputStream;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.jar.JarEntry;
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import java.util.jar.JarFile;
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import java.util.jar.JarOutputStream;
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import org.junit.jupiter.api.Assertions;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertNotNull;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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/*
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* @test
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* @bug 6374379
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* @summary Verify that we can read zip file names > 255 chars long
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* @run junit ReadLongZipFileName
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*/
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public class ReadLongZipFileName {
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private static final String ENTRY_NAME = "testFile.txt";
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private static final String LONG_DIR_NAME = "abcdefghijklmnopqrstuvwx"; // 24 chars
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private static final String JAR_FILE_NAME = "areallylargejarfilename.jar"; // 27 chars
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/*
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* Creates a jar file at a path whose path name length and jar file name length
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* combined is large. Then use the java.util.jar.JarFile APIs to open and read the jar file
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* to verify the APIs work against those jar/zip files.
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*/
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@Test
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public void testOpenAndReadJarFile() throws Exception {
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int minRequiredPathLength = 600; // long enough to definitely fail.
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Path tmpDir = Files.createTempDirectory(Path.of("."), "ReadLongZipFileName-test")
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.normalize().toAbsolutePath();
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// Create a directory structure long enough that the filename will
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// put us over the minRequiredLength.
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int currentPathLength = 0;
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Path jarFileDir = tmpDir;
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do {
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jarFileDir = jarFileDir.resolve(LONG_DIR_NAME);
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Files.createDirectories(jarFileDir);
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currentPathLength = jarFileDir.toFile().getCanonicalPath().length();
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} while (currentPathLength < (minRequiredPathLength - JAR_FILE_NAME.length()));
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// Create a new Jar file: use jar instead of zip to make sure long
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// names work for both zip and jar subclass.
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Path jarFilePath = jarFileDir.resolve(JAR_FILE_NAME);
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System.out.println("creating a jar file at " + jarFilePath);
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try (JarOutputStream out = new JarOutputStream(
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new BufferedOutputStream(Files.newOutputStream(jarFilePath)))) {
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out.putNextEntry(new JarEntry(ENTRY_NAME));
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out.write(1);
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}
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assertTrue(Files.isRegularFile(jarFilePath),
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"jar file " + jarFilePath + " does not exist or is not a file");
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try (JarFile readJarFile = new JarFile(jarFilePath.toFile())) {
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JarEntry je = readJarFile.getJarEntry(ENTRY_NAME);
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assertNotNull(je, "missing jar entry: " + ENTRY_NAME + " in jar file " + jarFilePath);
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DataInputStream dis = new DataInputStream(readJarFile.getInputStream(je));
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byte val = dis.readByte();
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assertEquals(1, val, "unexpected byte " + val + " read from entry " + ENTRY_NAME);
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try {
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dis.readByte();
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Assertions.fail("Read past expected EOF");
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} catch (IOException e) {
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// expected
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System.out.println("received the expected exception: " + e);
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}
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}
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System.out.println("Successfully opened and read contents from a jar file with a name "
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+ jarFilePath.toFile().getCanonicalPath().length() + " characters long");
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}
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}
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