Bug with the zip fs provider (7u72, 8u25), am able to create a corrupted zip...

[Xueming Shen]

Thanks Francis, I will take a look. It appears we have a bug somewhere, the entry
has the size field set to zero.

sherman at sherman-linux:~/Workspace/test$ java jdk.nio.zipfs.ZipInfo /tmp/t.zip
----------------#1--------------------
[Central Directory Header]
     Signature   :   0x02014b50
     VerMadeby   :         0x14    [0, 2.0]
     VerExtract  :         0x14    [2.0]
     Flag        :        0x800
     Method      :          0x8
     LastMTime   :   0x46304f28    [Fri Jan 16 09:57:16 PST 2015]
     CRC         :   0x3610a686
     CSize       :          0x2
     Size        :          0x0
     NameLen     :          0x3    [foo]
     ExtraLen    :          0x9
         [tag=0x5455, sz=5, data= 07 fc 50 b9 54 ]
          ->Info-ZIP Extended Timestamp: flag=7
             *Fri Jan 16 09:57:16 PST 2015
     CommentLen  :          0x0
     DiskStart   :          0x0
     Attrs       :          0x0
     AttrsEx     :          0x0
     LocOff      :          0x0

[Local File Header]
     Signature   :   0x04034b50
     Version     :         0x14    [2.0]
     Flag        :        0x800
     Method      :          0x8
     LastMTime   :   0x46304f28    [Fri Jan 16 09:57:16 PST 2015]
     CRC         :   0x3610a686
     CSize       :          0x2
     Size        :          0x0
     NameLength  :          0x3    [foo]
     ExtraLength :         0x11
         [tag=0x5455, sz=13, data= 07 fc 50 b9 54 fc 50 b9 54 fc 50 b9 54 ]
          ->Info-ZIP Extended Timestamp: flag=7
             *Fri Jan 16 09:57:16 PST 2015
             *Fri Jan 16 09:57:16 PST 2015
             *Fri Jan 16 09:57:16 PST 2015



On 01/16/2015 09:15 AM, Francis Galiegue wrote:
> (sorry for the flurry of emails, I should really not press the send
> button so quickly...)
>
> System info: Ubuntu 14.10; can reproduce with both 1.7u72 and 1.8u25.
>
> On Fri, Jan 16, 2015 at 6:10 PM, Francis Galiegue<fgaliegue at gmail.com>  wrote:
>> OK, I have a more simple reproducer:
>>
>> public final class Jsr203ZipBug
>> {
>>      public static void main(final String... args)
>>          throws IOException
>>      {
>>          final Path zipPath
>>              = Paths.get(System.getProperty("java.io.tmpdir"), "t.zip");
>>          Files.deleteIfExists(zipPath);
>>
>>          final URI uri = URI.create("jar:" + zipPath.toUri());
>>
>>          final Map<String, ?>  env = Collections.singletonMap("create", "true");
>>
>>          try (
>>              final FileSystem zipfs = FileSystems.newFileSystem(uri, env);
>>              final OutputStream out
>>                  = Files.newOutputStream(zipfs.getPath("/foo"));
>>          ) {
>>              out.write("hello".getBytes());
>>              out.close();
>>          }
>>      }
>> }
>>
>> Note that it doesn't matter whether I also .flush() before I close.
>>
>> --
>> Francis Galiegue, fgaliegue at gmail.com, https://github.com/fge
>> JSON Schema in Java: http://json-schema-validator.herokuapp.com
>> Parsers in pure Java: https://github.com/parboiled1/grappa (redde
>> Caesaris: https://github.com/sirthias)
>
>