Le Thu, 18 Apr 2013 11:29:29 -0400,
Rich Bowen <rbo...@rcbowen.com> a écrit :
>
> On Apr 18, 2013, at 11:09 AM, Igor Galić wrote:
>
> > From an IRC conversation in #httpd and #httpd-dev emerged the
> > idea to interpolate %{variables} in all directives.
> > According to sf we have somewhere a ~10 line code fragment
> > which does that without much overhead (not benchmarked) when
> > interpolating and with hardly any (short-circuit) when not.
> >
> > I think it would be a good idea to allow for this to be used
> > in all directives (across all modules) it makes for immensly
> > more readable configurations because:
> >
> > Example:
> >
> > # default vhost redirecting every HTTP vhost to HTTPS:
> > <VirtualHost *:80>
> > Redirect / https://%{HTTP_HOST}/
> > </VirtualHost>
> >
> >
> > Another example might be something "more advanced" like:
> >
> > # group specific authorization:
> > <LocationMatch "^/(?P<group>[^/]+).*">
> > Require group %{group}
> > </Location>
>
> This would be lovely, and make us as cool as nginx.
>
> Problems to address include conflicts with mod_macro, mod_rewrite,
> and any third-party module which might do variable fu.
>
> Having the interpolation ignore stuff starting with Rewrite* or in a
> mod_macro definition seems simple enough. Having a generic way for a
> third-party module to say "don't interpolate me, man!" could be handy
> too.
>
Hi,
I see no reason why it should be enabled per module, as I guess some
admins might want it for some parts of config, and not others (including
the .htaccess performance parsing point).
How about introducing a new <Interpolate> context ?
Default : off
Possibly a "AllowOverride Interpolate", so the main admin decides
whether .htaccess can make the server really slow.
Also solves the rewrite/macro conflicts issues at the config level :
<Interpolate On>
<Directory /foo/bar>
... interpolated stuff
</Directory>
</Interpolate>
<Interpolate Off>
<Directory /foo/bar>
... My rewrite/macro/etc stuff
</Directory>
</Interpolate>
This would also be fully compatible with 2.X existing configs and
respect their behaviour as long as nothing is changed.
Last point, who knows, maybe using interpolation together with
mod_macro/mod_rewrite will be the next great thing that we didn't think
of, and this config will even let super clever admins invent it for
us ;)
I suppose this might require more work to implement, though.
Vincent
--
Stop chasing shadows, just enjoy the ride.
Morcheeba
