[New-bugs-announce] [issue40301] zipfile module: new feature (two lines of code)

[Massimo Sala]

New submission from Massimo Sala <massimo.sala.71 at gmail.com>:

module zipfile

Tag "Components": I am not sure "Library (Lib)" is the correct one. If it isn't, please fix.

I use python to check zip files against malware.
In these files the are binary blobs outside the ZIP archive.
The malware payload isn't inside the ZIP file structure.
Example: a file "openme.zip" with this content :
[blob from offset 0 to offset 5678] 
[ZIP archive from offset 5679 to end of file]

zipfile already handles this, finding the ZIP structure inside the file.

My change is just to add a new public property, to expose an internal variable: the file offset of the ZIP structure.

I know, I am after the code freeze of Python 2.7.18.
But the change is really trivial, see the diff.
I hope you can approve this patch for all the Python versions, also for 2.7, to have consistency. For 2.7 this is the last call.

----------
components: Library (Lib)
files: py27_zipfile.patch
keywords: patch
messages: 366597
nosy: massimosala
priority: normal
severity: normal
status: open
title: zipfile module: new feature (two lines of code)
type: enhancement
versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file49067/py27_zipfile.patch

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<https://bugs.python.org/issue40301>
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