#!/bin/sh
set -eu

: "${RADIUS_SECRET:?RADIUS_SECRET must be set in .env}"

# pam_radius format: server[:port]  secret  timeout
# 60s timeout leaves room for the user to approve a Duo push.
printf '127.0.0.1:1812\t%s\t60\n' "$RADIUS_SECRET" > /etc/pam_radius_auth.conf
chmod 600 /etc/pam_radius_auth.conf

mkdir -p /var/lib/openvpn
[ -c /dev/net/tun ] || { mkdir -p /dev/net; mknod /dev/net/tun c 10 200; }

exec openvpn --cd /etc/openvpn --config server.conf