#!/bin/sh

VPN_USER=''
VPN_PASSWORD=''

export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
SYS_DT="$(date +%Y-%m-%d-%H:%M:%S)"; export SYS_DT

conf_bk() { /bin/cp -f "$1" "$1.old-$SYS_DT" 2>/dev/null; }

# Create VPN credentials
conf_bk "/etc/ppp/chap-secrets"
cat >> /etc/ppp/chap-secrets <<EOF
"$VPN_USER" l2tpd "$VPN_PASSWORD" *
EOF

conf_bk "/etc/ipsec.d/passwd"
VPN_PASSWORD_ENC=$(openssl passwd -1 "$VPN_PASSWORD")
cat >> /etc/ipsec.d/passwd <<EOF
$VPN_USER:$VPN_PASSWORD_ENC:xauth-psk
EOF