Mailing List Archive: "SetEnv/SetEnvIf" and mod

"SetEnv/SetEnvIf" and mod_perl

Oct 2, 2015, 2:39 AM

Post #1 of 3 (1942 views)

Hi again.

Assuming this kind of configuration :

<Location something>
SetEnvIf Request_URI \.gif$ gif-image
SetHandler modperl
PerlResponseHandler MyNiftyModule
..
</Location>

is there any way, in MyNiftyModule, to "get at" this "gif-image" variable ?

Such as, would I find it as $ENV{'gif-image'} ?
What kind of thing are these "Apache environment variables" anyway ?
I have been using them extensively within Apache itself, but I still can't quite figure
out on what plane they live. Clearly, they are not "environment variables" in the same
sense as "cgi-bin environment variables", and not the same thing either as what a
"PerlsetVar" does, so what are they ?

(And I realise that this is more of an Apache httpd question, but I figure that if someone
should be aware of the httpd internals, there is a good chance of finding such a person here).

Re: "SetEnv/SetEnvIf" and mod_perl [ In reply to ]

mcapone at cablewholesale

Oct 2, 2015, 3:24 PM

Post #2 of 3 (1835 views)

Permalink

In my code, I do:

<Location something>
SetEnvIf Request_URI \.gif$ gif-image
SetHandler modperl
PerlResponseHandler MyNiftyModule
PerlOptions +SetupEnv
</Location>

And then, yes, I have access to $ENV{'gif-image'}, with a value of "1".

Alternatively, i can
SetEnvIf Request_URI \.gif$ gif-image=YES

... and $ENV{'gif-image'} will have a value of 'YES'.

Note that you have to do
PerlOptions +SetupEnv
in order for this to pass through (as far as i know; unsetting it made
my custom $ENV's go away).

In a perfect world, we would have "PerlSetEnvIf". :)

On 10/02/2015 02:39 AM, AndrÃ© Warnier wrote:
> Hi again.
>
> Assuming this kind of configuration :
>
> <Location something>
> SetEnvIf Request_URI \.gif$ gif-image
> SetHandler modperl
> PerlResponseHandler MyNiftyModule
> ..
> </Location>
>
> is there any way, in MyNiftyModule, to "get at" this "gif-image"
> variable ?
>
> Such as, would I find it as $ENV{'gif-image'} ?
> What kind of thing are these "Apache environment variables" anyway ?
> I have been using them extensively within Apache itself, but I still
> can't quite figure out on what plane they live. Clearly, they are not
> "environment variables" in the same sense as "cgi-bin environment
> variables", and not the same thing either as what a "PerlsetVar" does,
> so what are they ?
>
> (And I realise that this is more of an Apache httpd question, but I
> figure that if someone should be aware of the httpd internals, there
> is a good chance of finding such a person here).
>
>
>

Re: "SetEnv/SetEnvIf" and mod_perl [ In reply to ]

paul at silevitch

Oct 2, 2015, 6:08 PM

Post #3 of 3 (1838 views)

Permalink

subprocess_env method will let you get apache's env:

http://perl.apache.org/docs/2.0/api/Apache2/RequestRec.html#C_subprocess_env_

On Fri, Oct 2, 2015 at 6:24 PM, Michael A. Capone <
mcapone@cablewholesale.com> wrote:

> In my code, I do:
>
> <Location something>
> SetEnvIf Request_URI \.gif$ gif-image
> SetHandler modperl
> PerlResponseHandler MyNiftyModule
> PerlOptions +SetupEnv
> </Location>
>
> And then, yes, I have access to $ENV{'gif-image'}, with a value of "1".
>
> Alternatively, i can
> SetEnvIf Request_URI \.gif$ gif-image=YES
>
> ... and $ENV{'gif-image'} will have a value of 'YES'.
>
> Note that you have to do
> PerlOptions +SetupEnv
> in order for this to pass through (as far as i know; unsetting it made my
> custom $ENV's go away).
>
> In a perfect world, we would have "PerlSetEnvIf". :)
>
>
> On 10/02/2015 02:39 AM, AndrÃ© Warnier wrote:
>
>> Hi again.
>>
>> Assuming this kind of configuration :
>>
>> <Location something>
>> SetEnvIf Request_URI \.gif$ gif-image
>> SetHandler modperl
>> PerlResponseHandler MyNiftyModule
>> ..
>> </Location>
>>
>> is there any way, in MyNiftyModule, to "get at" this "gif-image" variable
>> ?
>>
>> Such as, would I find it as $ENV{'gif-image'} ?
>> What kind of thing are these "Apache environment variables" anyway ?
>> I have been using them extensively within Apache itself, but I still
>> can't quite figure out on what plane they live. Clearly, they are not
>> "environment variables" in the same sense as "cgi-bin environment
>> variables", and not the same thing either as what a "PerlsetVar" does, so
>> what are they ?
>>
>> (And I realise that this is more of an Apache httpd question, but I
>> figure that if someone should be aware of the httpd internals, there is a
>> good chance of finding such a person here).
>>
>>
>>
>>
>