[Erp5-dev] Warning: possible Mandriva 2007 python tarfile module bug

[Ivan Tyagov]

Hi,

For those using ERP5 with Mandriva 2007.

It's possible that if you try to upload a bt5 file to ERP5 instance you 
will not get all of bt5 content uploaded and thus you'll not be able to 
install the bt5 file correctly.

The problem lies probably in the system libraries used by python' 
tarfile module.

The following test script (similar to one used for extracting .bt5 for 
ERP5):
=================================
#!/usr/bin/python
import tarfile
f = "/var/lib/zope/Products/bt5/erp5_accounting.bt5"
tar = tarfile.open(f, 'r:gz')
members = tar.getmembers()
for m in members:
   tar.extractfile(m)
print len(members)
==================================

Will extract from file for:

  * Mandriva 2006, python 2.4.1, tarfile 0.6.4 - 1250 files

  * Mandriva 2007, python 2.4.3, tarfile 0.6.4 - 127 files

This happens silently without any error messages and can affect ERP5 (I 
experienced it a lot of) but only for Mandriva 2007.
If you try to unzi/untar the same file using tar you'll get the correct 
file content.

Ivan