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python-stripzip

This package provides a stripzip script which will set all of the date/times in given zips to 1980-01-01 00:00:00 - the lowest valid value available in zips.

The purpose is to zip archive based builds deterministic, e.g. python wheels, AWS lambdas. There are no extra dependancies, and the package is available on PyPi which is probably the only advantage of this at the moment.

usage: stripzip [-h] zip [zip ...]

Installation

You can pick one of:

pipsi install python-stripzip
pip install --user python-stripzip
git clone [email protected]:Code0x58/python-stripzip.git && cd python-stripzip && python setup.py install

See also

  • strip-nodeterminism - tool written in Perl and released as a Debian package; works on various archive formats
  • stripzip - tool written in C without binary releases; currently wipes out more zip metadata
  • SOURCE_DATE_EPOCH=315532800 python setup.py bdist_wheel

python-stripzip's People

Contributors

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Forkers

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python-stripzip's Issues

NameError: name 'xrange' is not defined (Python 3 compatibility

when I run stripzip I'm getting this error.

Traceback (most recent call last):
  File "/Users/patrickc/Library/Python/3.6/bin/stripzip", line 8, in <module>
    sys.exit(cli())
  File "/Users/patrickc/Library/Python/3.6/lib/python/site-packages/stripzip.py", line 123, in cli
    _zero_zip_date_time(zip_)
  File "/Users/patrickc/Library/Python/3.6/lib/python/site-packages/stripzip.py", line 96, in _zero_zip_date_time
    purify_extra_data(mm, offset-extra_field_length-compressed_size, extra_field_length)
  File "/Users/patrickc/Library/Python/3.6/lib/python/site-packages/stripzip.py", line 36, in purify_extra_data
    for i in xrange(2, len(values)):
NameError: name 'xrange' is not defined

stack overflow says this is a python 2->3 compatibility issue. https://stackoverflow.com/questions/17192158/nameerror-global-name-xrange-is-not-defined-in-python-3

stripzip should also strip access time, uid and gid

Thanks for writing this tool!

For me, stripzip (as installed from pypi) resets file modification time (yay!) but leaves access time, uid and gid attributes.

Here's an example from MacOS, diff between 2 runs of (zip + stripzip):

--- details.1s.txt	2018-11-14 17:29:46.000000000 +0900
+++ details.2s.txt	2018-11-14 17:30:32.000000000 +0900
@@ -15,7 +15,7 @@
 0028   Length              0009
 002A   Flags               '03 mod access'
 002B   Mod Time            5BE94512 'Mon Nov 12 18:17:06 2018'
-002F   Access Time         5BEBDCB6 'Wed Nov 14 17:28:38 2018'
+002F   Access Time         5BEBDD12 'Wed Nov 14 17:30:10 2018'
 0033 Extra ID #0002        7875 'ux: Unix Extra Type 3'
 0035   Length              000B
 0037   Version             01
@@ -41,7 +41,7 @@
 006F   Length              0009
 0071   Flags               '03 mod access'
 0072   Mod Time            5BE3EA30 'Thu Nov  8 16:48:00 2018'
-0076   Access Time         5BEBDCB6 'Wed Nov 14 17:28:38 2018'
+0076   Access Time         5BEBDD12 'Wed Nov 14 17:30:10 2018'
 007A Extra ID #0002        7875 'ux: Unix Extra Type 3'
 007C   Length              000B
 007E   Version             01

Access times change because zip read the file, and uid/gid would depend on who ran zip.

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