gh-153426: Raise BadZipFile for invalid UTF-8 filenames- #1

[williedevibes-prog]

Raise Bad
williedevibes-prog#1 53426: Raise BadZipFile for invalid
UTF-8 filenames in zipfile
Problem
When a ZIP entry has the UTF-8 flag set
but its filename is not valid
UTF-8, zipfile raises UnicodeDecodeError
instead of BadZipFile.
Callers who catch BadZipFile for corrupt
archives miss this case.
Fix
[Describe in 1-2 sentences, e.g. "The
filename decoding in
Ziplnfo/_RealGetContents is now wrapped
so a UnicodeDecodeError is
re-raised as BadZipFile."]
Tests
Added a regression test in Lib/test/
test_zipfile/ that opens an archive
with an invalid UTF-8 filename and asserts
BadZipFile is raised.
The test failed before the change and
passes now.
Ran: python -m test test_zipfile
Before / after
Before: UnicodeDecodeError: 'utf-8' codec can't decode byte
After: zipfile.BadZipFile: File name is not valid UTF-8

• Issue: zipfile raises UnicodeDecodeError instead of BadZipFile for a member name flagged UTF-8 but not valid UTF-8 #153426

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[encukou]

This PR looks like autogenerated spam so I'll just close it. If you're human wanting to learn, please ask for explanation.