1 /*

     2  * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any 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  */

    28 import java.io.ByteArrayOutputStream;

    29 import java.io.FileOutputStream;

    30 import java.io.IOException;

    31 import java.io.PrintStream;

    32 import java.util.zip.CRC32;

    33 import java.util.zip.CheckedOutputStream;

    34 import java.util.zip.ZipEntry;

    35 import java.util.zip.ZipOutputStream;

    36 public 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 }