On 26-04-2012 15:05, Thomas J. Hruska wrote:
On 4/26/2012 5:10 AM, OpenSSL wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
OpenSSL version 1.0.1b released
===============================
Heads up warning: This archive under 7-Zip 9.20 (latest
stable) displays a "There are no trailing zero-filled records"
error dialog but then proceeds to work just fine. The last
time this happened there was discussion on the list but no
resolution. Ignoring the error seemed to work fine.
This is not limited to 7-Zip, see also the post by Mr. Bergeron
of IBM.
I have looked closer at the tar.gz file (my download matches the
checksums and digital signature from Dr. Henson), and the file
is not valid according to the tar file format specifications that
I have looked at.
According to the basic tar specification, each file is prefixed by
a 512 byte header with filename, size etc. and zero padded to a
multiple of 512 bytes, and the last file is followed by at least
2x512 bytes of all-zero bytes to indicate end of file. Additional
details vary among tar format versions, but these three aspects
are amongst the common features.
But the tar file inside the gzip file "openssl-1.0.1b.tar.gz"
lacks those last 1024 bytes of zeroes. I think this must be a bug
in whatever tool Dr. Henson used to create the file. 7-Zip 9.20,
GNU tar 1.25 and BSD tar 2.8.3 all produce the correct format, but
of those 3 only 7-Zip loudly complains about the missing
end-of-file blocks. Mr. Bergeron seems to be using a 4th
implementation (maybe a derivative of the original UNIX tar, maybe
a version for an IBM OS) which also complains.
Enjoy
Jakob
--
Jakob Bohm, CIO, Partner, WiseMo A/S. http://www.wisemo.com
Transformervej 29, 2730 Herlev, Denmark. Direct +45 31 13 16 10
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