92 lines
3.2 KiB
Java
92 lines
3.2 KiB
Java
/*
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* Copyright (c) 2008, 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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/**
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* A simple class to create our erring Jar with a very long Main-Class
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* attribute in the manifest.
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*/
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import java.io.ByteArrayOutputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.util.zip.CRC32;
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import java.util.zip.CheckedOutputStream;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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public class ZipMeUp {
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static final CRC32 crc = new CRC32();
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private static String SOME_KLASS = ".Some";
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static byte[] getManifestAsBytes(int nchars) throws IOException {
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crc.reset();
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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CheckedOutputStream cos = new CheckedOutputStream(baos, crc);
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PrintStream ps = new PrintStream(cos);
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ps.println("Manifest-Version: 1.0");
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ps.print("Main-Class: ");
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for (int i = 0 ; i < nchars - SOME_KLASS.length() ; i++) {
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ps.print(i%10);
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}
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ps.println(SOME_KLASS);
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cos.flush();
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cos.close();
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ps.close();
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return baos.toByteArray();
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}
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/**
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* The arguments are: filename_to_create length
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* @param args
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* @throws java.lang.Exception
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*/
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public static void main(String...args) throws Exception {
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FileOutputStream fos = new FileOutputStream(args[0]);
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ZipOutputStream zos = new ZipOutputStream(fos);
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byte[] manifest = getManifestAsBytes(Integer.parseInt(args[1]));
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ZipEntry ze = new ZipEntry("META-INF/MANIFEST.MF");
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ze.setMethod(ZipEntry.STORED);
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ze.setSize(manifest.length);
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ze.setCompressedSize(manifest.length);
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ze.setCrc(crc.getValue());
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ze.setTime(System.currentTimeMillis());
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zos.putNextEntry(ze);
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zos.write(manifest);
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zos.flush();
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// add a zero length class
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ze = new ZipEntry(SOME_KLASS + ".class");
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ze.setMethod(ZipEntry.STORED);
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ze.setSize(0);
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ze.setCompressedSize(0);
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ze.setCrc(0);
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ze.setTime(System.currentTimeMillis());
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zos.putNextEntry(ze);
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zos.flush();
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zos.closeEntry();
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zos.close();
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System.exit(0);
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}
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}
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