On Tue, Dec 03, 2024 at 05:46:00PM +0100, Gioele Barabucci wrote: > On 03/12/24 17:20, Marc Haber wrote: > > What I intend to do in adduser for the next unstable upload is: > > > > - adduser --system's user name validation will not change > > - I'll make sure that adduser <normal user account> doesn't accept > > UTF-8 user names, bringing it closer to systemd's notion of a valid > > user name > > - adduser --allow-bad-names will still allow UTF-8 usernames, not doing > > normalization. I will document this and make it clear that the local > > admin needs to make sure that they don't allow things they don't want > > to have > > Dear Marc, > > in preparation for a PRECIS future, couldn't adduser pass the usernames > through NFC instead of doing no normalization? > > RFC 8264 5.2.4 Normalization Rule states: > > In accordance with [RFC5198], Normalization Form C (NFC) is > RECOMMENDED.
that would solve the étienne and étienne issue (where the two characters are just different renderings of the same character), but not the Ohm-against-Omega issue, right? While this seems the right thing to do, I think this should be done in useradd (pkg:shadow), in the respective upstream project, so that all Linux distributions get the same behavior. I have filed https://github.com/shadow-maint/shadow/issues/1138 in the general regard. Feel free to add what I fotgot to mention there. I'd rather not have this can of worms in adduser, but I'd consider a patch. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421
