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Re: [Bug-tar] 'BZh[1-9]' file in v7 format archive confuses GNU tar
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From: |
Michał Górny |
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Subject: |
Re: [Bug-tar] 'BZh[1-9]' file in v7 format archive confuses GNU tar |
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Date: |
Tue, 27 Nov 2018 15:19:12 +0100 |
On Tue, 2018-11-27 at 15:31 +0200, Sergey Poznyakoff wrote:
> Michał Górny <address@hidden> ha escrit:
>
> > Do you have a test case for it maybe?
>
> Yes, I do. Please see the 'Bad file:' link in:
>
> http://lists.gnu.org/archive/html/bug-tar/2015-02/msg00004.html
>
Hmm, unless I'm mistaken the checksum field is:
00 00 00 00 00 00 70 00
FWICS the problem is that one of the checksum variants evaluates to zero
and tar is rather lax on accepting null checksum string (with trailing
garbage) as zero.
My first thought would to improve the heuristic a bit by requiring
the checksum to contain at least one octal digit.
--
Best regards,
Michał Górny
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