1/*
2 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * A simple class to create our erring Jar with a very long Main-Class
26 * attribute in the manifest.
27 */
28import java.io.ByteArrayOutputStream;
29import java.io.FileOutputStream;
30import java.io.IOException;
31import java.io.PrintStream;
32import java.util.zip.CRC32;
33import java.util.zip.CheckedOutputStream;
34import java.util.zip.ZipEntry;
35import java.util.zip.ZipOutputStream;
36public class ZipMeUp {
37
38    static final CRC32 crc = new CRC32();
39
40    private static String SOME_KLASS = ".Some";
41
42    static byte[] getManifestAsBytes(int nchars) throws IOException {
43        crc.reset();
44        ByteArrayOutputStream baos = new ByteArrayOutputStream();
45        CheckedOutputStream cos = new CheckedOutputStream(baos, crc);
46        PrintStream ps = new PrintStream(cos);
47        ps.println("Manifest-Version: 1.0");
48        ps.print("Main-Class: ");
49        for (int i = 0 ; i < nchars - SOME_KLASS.length() ; i++) {
50            ps.print(i%10);
51        }
52        ps.println(SOME_KLASS);
53        cos.flush();
54        cos.close();
55        ps.close();
56        return baos.toByteArray();
57    }
58
59    /**
60     * The arguments are: filename_to_create length
61     * @param args
62     * @throws java.lang.Exception
63     */
64    public static void main(String...args) throws Exception  {
65        FileOutputStream fos = new FileOutputStream(args[0]);
66        ZipOutputStream zos = new ZipOutputStream(fos);
67        byte[] manifest = getManifestAsBytes(Integer.parseInt(args[1]));
68        ZipEntry ze = new ZipEntry("META-INF/MANIFEST.MF");
69        ze.setMethod(ZipEntry.STORED);
70        ze.setSize(manifest.length);
71        ze.setCompressedSize(manifest.length);
72        ze.setCrc(crc.getValue());
73        ze.setTime(System.currentTimeMillis());
74        zos.putNextEntry(ze);
75        zos.write(manifest);
76        zos.flush();
77
78        // add a zero length class
79        ze = new ZipEntry(SOME_KLASS + ".class");
80        ze.setMethod(ZipEntry.STORED);
81        ze.setSize(0);
82        ze.setCompressedSize(0);
83        ze.setCrc(0);
84        ze.setTime(System.currentTimeMillis());
85        zos.putNextEntry(ze);
86        zos.flush();
87        zos.closeEntry();
88        zos.close();
89        System.exit(0);
90    }
91}
92