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Re: libidn2 support
From: |
Simon Josefsson |
Subject: |
Re: libidn2 support |
Date: |
Thu, 01 Dec 2016 14:39:55 +0100 |
Hi Tim. Thanks, this is really cool. Do you want commit access to
libidn2 so you can push this? What's your gitlab username? I have
limited time and don't want to be in your way for this to happen. I'm
happy to do review, but can't promise when.
/Simon
tis 2016-11-29 klockan 22:23 +0100 skrev Tim Rühsen:
> On Mittwoch, 2. November 2016 10:04:19 CET Daniel Stenberg wrote:
> > On Wed, 2 Nov 2016, Simon Josefsson wrote:
> > > Switching from IDNA2003 to IDNA2008 requires thought. They are not
> > > compatible, and IDNA2008 requires pre-processing (e.g., UTS #46 [1]) to
> > > be usable in practice. Libidn2 does not implement any pre-processing,
> > > it is a pure IDNA2008 implementation.
> > >
> > > [1] http://www.unicode.org/reports/tr46/
> >
> > Thanks for this Simon. I wasn't aware.
> >
> > Based on this, I suppose my recommendation is that people simply switch off
> > IDN support in curl builds until further notice to stay safe. The old way
> > was open for trickery and the new way is incomplete.
>
> Please review and comment https://gitlab.com/rockdaboot/libidn2/tree/tr46
> (It works for me ).
>
> I would like to open a pull request to libidn2 soon.
> That code will be useful for any DNS clients resolving IDNs.
>
> From my mail to help-libidn mailing list:
>
> The code introduces new flags for the lookup functions IDN2_TRANSITIONAL and
> IDN2_NONTRANSITIONAL (mutual exclusive).
>
> IDN2_TRANSITIONAL enables the TR46 transitional process.
> IDN2_NONTRANSITIONAL enables the TR46 non-transitional process.
>
> Corresponding, the 'idn2' utility now has -T/--tr46t to enable transitional
> lookup and -N/--tr46nt to enable non-transitional lookup.
>
> Example:
> $ src/idn2 -T faß.de
> fass.de
>
> $ src/idn2 -N faß.de
> xn--fa-hia.de
>
> To show the TR46 mapping (upper->lowercase) in work:
> $ src/idn2 Faß.de
> idn2: lookup: string contains a disallowed character
>
> $ src/idn2 -T Faß.de
> fass.de
>
> $ src/idn2 -N Faß.de
> xn--fa-hia.de
>
> Regards, Tim
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- Re: libidn2 support,
Simon Josefsson <=
- Re: libidn2 support, Tim Ruehsen, 2016/12/01
- Re: libidn2 support, Simon Josefsson, 2016/12/05
- Re: libidn2 support, Tim Ruehsen, 2016/12/06
- Re: libidn2 support, Simon Josefsson, 2016/12/07
- Re: libidn2 support, Tim Ruehsen, 2016/12/07
- Re: libidn2 support, Tim Ruehsen, 2016/12/07
- Re: libidn2 support, Tim Ruehsen, 2016/12/08
- Re: libidn2 support, Simon Josefsson, 2016/12/26
- Re: libidn2 support, Tim Ruehsen, 2016/12/09