[Freeipa-devel] [PATCH] 871 add hostname regex
Alexander Bokovoy
abokovoy at redhat.com
Mon Sep 12 20:20:55 UTC 2011
On Mon, 12 Sep 2011, Rob Crittenden wrote:
> Alexander Bokovoy wrote:
> >On Mon, 12 Sep 2011, Rob Crittenden wrote:
> >
> >>Limit hostnames to letters, digits and - with a max length of 255
> >>
> >> takes_params = (
> >> Str('fqdn', validate_host,
> >>+ pattern='^[a-zA-Z0-9][a-zA-Z0-9-\.]{0,254}$',
> >>+ pattern_errmsg='may only include letters, numbers, and -',
> >>+ maxlength=255,
> >> cli_name='hostname',
> >> label=_('Host name'),
> >> primary_key=True,
> >
> >What about IDN hosts? With this change we would require them to be
> >always in Punycode?
> >
>
> Oh, hadn't considered that, I was just following the relevent RFCs.
> Is there a way we can easily support those as well?
IDN with Punycode-encoded names would already be supported by this
validator. I was wondering about being able to enter those names as it
is and if they fail the validator, convert them to IDN
(xn--<Punycode> per name component) and use it forward.
However, we would need to make sure all of the comparisons would be
done properly...
--
/ Alexander Bokovoy
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