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