On Thu, 10 Mar 2022 00:01:36 +0000, Seth Arnold <seth.arn...@canonical.com> wrote: >On Tue, Mar 08, 2022 at 05:49:04PM +0100, Marc Haber wrote: >> (2) >> #774046 #520037 >> Which special characters should we allow for account names? > >Please consider the leading character separately from the rest of the >characters: > >- leading digits sometimes causes programs to parse a 'username' as an > 'user id' instead; you can see some of this here: > https://github.com/systemd/systemd/issues/6237 > I know I've seen more instances of this over the years. > >- leading dash may cause the username to be treated as command line > options in some programs. I've lost references to this happening.
Should those two restrictions apply for both system and user accounts? Should they be overrideable? >While you can argue these are bugs in the programs involved, they do >happen in the wild. Thus, I'd like to suggest that the regex be more >restrictive for the first character. Noted. Greetings Marc -- -------------------------------------- !! No courtesy copies, please !! ----- Marc Haber | " Questions are the | Mailadresse im Header Mannheim, Germany | Beginning of Wisdom " | Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834
