[
https://issues.apache.org/jira/browse/COMPRESS-565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17287718#comment-17287718
]
Stefan Bodewig commented on COMPRESS-565:
-----------------------------------------
Does 7z on Windows provide you with more details? I'm not using Windows
normally, so checking would take some time ...
What we have changed between 1.9 and 1.20 is the handling of the "relative
offset of local header" inside the central directory entry - at least this is
where I see the created archives differ. This is one of the problems Excel has
had with our archives as well. To be honest I believe our implementation is
correct and Excel is wrong - this is why I'd really like to know what bothers
7z.
Finally are any of the consumers of your archive actually using the Unicode
extra fields? If not and if leaving this out fixes the problem then I'd just
drop it. But I must admit I'm not really sure how/why the unicode extra fields
changes the outcome in any way.
> Regression - Corrupted headers when using 64 bit ZipArchiveOutputStream
> -----------------------------------------------------------------------
>
> Key: COMPRESS-565
> URL: https://issues.apache.org/jira/browse/COMPRESS-565
> Project: Commons Compress
> Issue Type: Bug
> Components: Archivers
> Affects Versions: 1.20
> Reporter: Evgenii Bovykin
> Assignee: Peter Lee
> Priority: Major
> Attachments: image-2021-02-20-15-51-21-747.png
>
>
> We've recently updated commons-compress library from version 1.9 to 1.20 and
> now experiencing the problem that didn't occur before.
>
> When using ZipArchiveOutputStream to archive 5Gb file and setting the
> following fields
> {{output.setUseZip64(Zip64Mode.Always)}}
>
> {{output.setCreateUnicodeExtraFields(ZipArchiveOutputStream.UnicodeExtraFieldPolicy.ALWAYS)}}
> resulting archive contains corrupted headers.
> *Expand-Archive Powershell utility cannot extract the archive at all with the
> error about corrupted header. 7zip also complains about it, but can extract
> the archive.*
>
> The problem didn't appear when using library version 1.9.
>
> I've created a sample project that reproduces the error -
> [https://github.com/missingdays/commons-compress-example]
> Issue doesn't reproduce if you do any of the following:
>
> # Downgrade library to version 1.9
> # Remove
> output.setCreateUnicodeExtraFields(ZipArchiveOutputStream.UnicodeExtraFieldPolicy.ALWAYS)
> # Remove output.setUseZip64(Zip64Mode.Always) and zip smaller file (e.g. 1Gb)
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
