On Fri, Aug 29, 2025 at 09:10:15PM -0500, Rob Browning wrote:
Offhand, and without remembering perl's exact semantics on this front,
I'd guess this is a case of assuming paths are decodable in the current
locale. If so, it should be possible to reproduce the problem from a
UTF-8 locale like this:
touch /any/where/not-utf-8-but-possible-$'\177'
deluser --remove-all-files someuser
Here the equivalent eventually fails to remove /home/someuser,
reporting:
invalid characters in input string, see trace output for more details
at /usr/share/perl5/Debian/AdduserCommon.pm line 143.
I was able to reproduce this, write a test case, and change the code so
that the deluser call now proceeds correctly. Files belonging to the
user that is being deleted AND have strange file names might stay aroud
now. I think that addressing this is much harder.
Would you want to review
https://salsa.debian.org/debian/adduser/-/merge_requests/107 ?
Greetings
Marc
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