Using environment variables in post-auth of freeradius 2.1.x

[Simon Meggle]

Hello, 

I have the situation that the post-auth section of FREERADIUS 2.1.12 should differ in a few lines on the test and prod system. 
In version 3 I can make use of environment variables: 

post-auth {
    ...
    ...
        elsif ( "$ENV{HOSTNAME}" == "stest-sr-h00") {
        # DEV-replies
        elsif ( "$ENV{HOSTNAME}" == "sprod-sr-h01" || "$ENV{HOSTNAME}" == "sprod-sr-h02") {
        # PROD-replies
        fi


Is there any chance to smuggle environment variables like $HOSTNAME into freeradius 2.x ?
Thanks,
Simon