On Sat, Oct 13, 2001 at 02:30:50AM -0700, Crist J. Clark wrote:
> On Sat, Oct 13, 2001 at 01:05:10PM +0400, Yar Tikhiy wrote:
> > On Fri, Oct 12, 2001 at 07:24:57PM +0300, Peter Pentchev wrote:
> > > On Fri, Oct 12, 2001 at 09:52:10AM -0600, Warner Losh wrote:
> > > > In message <[EMAIL PROTECTED]> Yar Tikhiy writes:
> > > > : Is there any reason to omit the period ('.') from the list of valid
> > > > : characters?  With the period included, the list would conform to
> > > > : POSIX's definition of a valid user name.
> > > > 
> > > > Not any more.  it used to be that chown user.group would be
> > > > ambiguous.  now it isn't, since user:group is the right syntax.
> > > 
> > > This might be a problem for NIS or Kerberos domains - an older version
> > > of FreeBSD might be confuzzled by usernames which are perfectly valid
> > > for the rest of the client boxes.
> > 
> > Oh, I see.  Given that the only issue about the period in user names
> > is compatibility, should pw(8) and adduser(8) still reject it or accept
> > it and print a warning?  I think printing a warning is better since
> > the validity check is by no means a panacea--a stupid admin can always
> > use vipw(8) to create any kind of an invalid user name.
> 
> That arguement goes both ways. They can use vipw(8) or they can edit
> master.passwd directly if they insist on living dangerously. They can
> even hack pw(8) or adduser(8) if they want. But no reason to let
> pw(8) or adduser(8) fsck up their systems for them. After all, tools
> like adduser(8) are aimed more towards the inexperienced admin. If any
> administrative apps are going to do hand-holding, adduser(8) is one of
> them.

Good point!

However, there's a certain "lobby" of people who need weird chars
in user names (e.g. bin/22860 and the followup to it about I18N)
and who prefer the automated tools to vipw/mkdir/cp/chown.  So what
about keeping the strict validity check by default and adding an
option to adduser(8) and pw(8) that would turn off the check?

BTW, coming to a final conclusion on this issue would help to close
a number of problem reports, no matter what the conclusion will be.

-- 
Yar

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