#! /bin/bash
# swap_hosts.sh
# This script changes /etc/hosts for when I'm in the same subnet as 
# my server, and port-forwarding won't work.  I can run it at startup, 
# assuming it has the right permissions, and it will autodetect the 
# active wireless network
# Note: the proper way to address this issue is through simulated loopback.
# See https://secure.sccs.swarthmore.edu/pipermail/slug/2006-December/006612.html for more.
# This script requires network.sh

ssid=`./network.sh`
myhomenet= #whatever its name is

if [ "$ssid" == "$myhomenet" ]
then
    # These calls to sed should be changed to reflect the nature of your
    # /etc/hosts.  For me, all IPs starting with 192 should be commented 
    # out when I'm away, and uncommented when I'm in the server's subnet.
    echo "Setting /etc/hosts for local..."
    sed -i -e 's/^\#192/192/g' /etc/hosts
else
    echo "Setting /etc/hosts for away..."
    sed -i -e 's/^192/\#192/g' /etc/hosts
fi