Using Apache Environment Variables to set custom ErrorDocument

apache-2.2environment-variableserrordocumentsetenv

I've got a set of RewriteCond rules that test for various mobile devices and then set environment variables like "env=device:.iphone" or "env=device:.smartphone" if the useragent matches an iPhone or Android device.

I'm trying to now redirect the user to custom-styled 404/500 server error pages for each device, by way of the error pages.

Ideally I'd like to be able to test for a variable being there, and then write in a custom ErrorDocument string. But an apache doesn't seem to work in this case.

Any ideas how I can construct if/else tests in an apache conf file for environment vars?

Best Answer

Starting with version 2.3 of Apache, you can make use of IF constucts. It's described in Apache's documentation.

Related Solutions

Linux – Check Environment Variables of a Running Process on Unix

cat /proc/<pid>/environ

If you want to have pid(s) of a given running executable you can, among a number of other possibilities, use pidof:

AlberT$ pidof sshd   
30690 6512

EDIT:

I totally quote Dennis Williamson and Teddy comments to achieve a more readable output. My solution is the following:

tr '\0' '\n' < /proc/<pid>/environ

Setting environment variables in mod_wsgi for Django

In Ubuntu, placing

export ORACLE_HOME=<your oracle home>
export LD_LIBRARY_PATH=<your library path>

in /etc/apache2/envvars seems to do the trick.

If nothing else helps, you can edit your Apache startup scripts and put above export lines just before Apache daemon startup (I recall I did something like this looong time ago on Debian).

Best Answer

Related Solutions

Linux – Check Environment Variables of a Running Process on Unix

Setting environment variables in mod_wsgi for Django

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