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From eeadev dev <eea...@gmail.com>
Subject Re: [users@httpd] setting getting variable to be changed in production and read in my C module
Date Wed, 20 Sep 2017 12:07:30 GMT
is there anything similar but related to my module?
for instance, now I have mymodule.conf I would prefer to write it there
than in the general conf file, is it possible to define my var there and
use ap_resolve_env()?

2017-09-20 4:16 GMT-07:00 Yann Ylavic <ylavic.dev@gmail.com>:

> On Wed, Sep 20, 2017 at 1:11 PM, Yann Ylavic <ylavic.dev@gmail.com> wrote:
> > On Wed, Sep 20, 2017 at 12:58 PM, Yann Ylavic <ylavic.dev@gmail.com>
> wrote:
> >> On Wed, Sep 20, 2017 at 11:55 AM, eeadev dev <eeadev@gmail.com> wrote:
> >>> I have to write a set of variable to be read from my C module. Those
> >>> variable could be change when the code is in production, similar to
> what u
> >>> would write in a java properties file.
> >>>
> >>> What is the proper way to do it and which functions to use?
> >>>
> >>> write the in the httpd.conf (what is the API for getting/setting a var
> >>> visible in all the apache web server)
> >>
> >> You could:
> >>   Define VAR_NAME "some_value"
> >> in "httpd.conf" and then:
> >>   const char *var_value = ap_resolve_env(some_pool, "VAR_NAME");
> >> in your module for example.
> >
> > Hmm, actually you'd have to use (note the leading $):
> >    const char *var_value = ap_resolve_env(some_pool, "$VAR_NAME");
> > in your module.
>
> OK, sorry for not having looked at ap_resolve_env() more thoroughly first.
>
> What you'd have to use in your module is in fact:
>     const char *var_value = ap_resolve_env(some_pool, "${VAR_NAME}");
>
> >
> > So it may not be appropriate if "VAR_NAME" was instead a C variable
> > like var_name (which you'd have to prefix...).
>
> This still stands, even worse (prefix + suffix).
>
> But maybe simple enough if you'll only use string literals...
>
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