Mailing List Archive

Joshua Slive wrote:
>
> So, here is a second draft of my "Apache Environment Variables"
> doc.

Looks good, but a couple of suggestions:

1. Mention suexec and its restricted list of envariables.
2. Where available, reference tutorial/expansion documents
(like the 'image theft' one).

Other than that, this looks great!
--
#ken P-)}

Ken Coar <http://Golux.Com/coar/>
Apache Software Foundation <http://www.apache.org/>
"Apache Server for Dummies" <http://Apache-Server.Com/>
"Apache Server Unleashed" <http://ApacheUnleashed.Com/>

Rodent of Unusual Size <Ken.Coar@Golux.Com> wrote:
>Joshua Slive wrote:
>>
>> So, here is a second draft of my "Apache Environment Variables"
>> doc.
>
>Looks good, but a couple of suggestions:
>
>1. Mention suexec and its restricted list of envariables.
>2. Where available, reference tutorial/expansion documents
> (like the 'image theft' one).

Another suggestion: mention mod_rewrite's list of "environment"
variables. (mod_rewrite's environment handling is very strange.)

Tony.
--
en oeccget g mtcaa f.a.n.finch
v spdlkishrhtewe y dot@dotat.at
eatp o v eiti i d. fanf@covalent.net

On Wed, 18 Oct 2000, Tony Finch wrote:

> >Joshua Slive wrote:
> >>
> >> So, here is a second draft of my "Apache Environment Variables"
> >> doc.
> >
> Another suggestion: mention mod_rewrite's list of "environment"
> variables. (mod_rewrite's environment handling is very strange.)
>

Yah, I know. I don't particularly understand it, so I sort of punted on
the documentation. I'll take a closer look when I get a chance.

Joshua.

Joshua Slive <slive@finance.commerce.ubc.ca> wrote:
>On Wed, 18 Oct 2000, Tony Finch wrote:
>
>> >Joshua Slive wrote:
>> >>
>> >> So, here is a second draft of my "Apache Environment Variables"
>> >> doc.
>> >
>> Another suggestion: mention mod_rewrite's list of "environment"
>> variables. (mod_rewrite's environment handling is very strange.)
>
>Yah, I know. I don't particularly understand it, so I sort of punted on
>the documentation. I'll take a closer look when I get a chance.

mod_include does its environment stuff thus:

variables are added to the environment table by caling
ap_add_cgi_vars() and add_include_vars() for the standard
and module-specific variables respectively.

variables are looked up by pulling them from the environment
table r->subprocess_env.

mod_rewrite does it thus:

variables are not added to an environment table.

they are looked up by some special purpose code that matches
the variables known by mod_rewrite, and falls back to looking
in the environment table.

The former is the right way; the latter is gross. However mod_rewrite
gains some performance by its approach.

Fortunately everything you need to know about mod_rewrite's handling
of environment variables is contained in its lookup_variable function
which also happens to be easy to read.

Tony.
--
en oeccget g mtcaa f.a.n.finch
v spdlkishrhtewe y dot@dotat.at
eatp o v eiti i d. fanf@covalent.net