[New-bugs-announce] [issue24259] tar.extractall() does not recognize unexpected EOF

[Thomas Güttler]

New submission from Thomas Güttler:

The Python tarfile library does not detect a broken tar.

user at host$ wc -c good.tar
143360 good.tar

user at host$ head -c 130000 good.tar > cut.tar

user at host$ tar -tf cut.tar 
...
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now

Very nice, the command line tool recognizes an unexpected EOF.

user at host$ python
Python 2.7.6 (default, Mar 22 2014, 22:59:56) 
>>> import tarfile
>>> tar=tarfile.open('cut.tar')
>>> tar.extractall()

Not nice. The Python library decodes the file, but raises no exception.

Is this a bug or feature?

Source: http://stackoverflow.com/questions/30302204/tar-extractall-does-not-recognize-unexpected-eof

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messages: 243755
nosy: Thomas Güttler
priority: normal
severity: normal
status: open
title: tar.extractall() does not recognize unexpected EOF

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24259>
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