#!/bin/sh

USERNAME="replace with your username"
PASSWORD="replace with your password"
PROTOCOL="udp"

REMOTE_SERVERS="
remote vpn.btguard.com 1194
"

#### DO NOT CHANGE below this line ####

CA_CRT='-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----'


OPVPNENABLE=`nvram get openvpncl_enable | awk '$1 == "0" {print $1}'`

if [ "$OPVPNENABLE" != 0 ]
then
   nvram set openvpncl_enable=0
   nvram commit
fi

sleep 30
mkdir /tmp/btguard; cd /tmp/btguard
echo -e "$USERNAME\n$PASSWORD" > userpass.conf
echo "$CA_CRT" > ca.crt
echo "#!/bin/sh" > route-up.sh; echo -e "#!/bin/sh\nsleep 2" > route-down.sh
echo "#!/bin/sh
iptables -I FORWARD -i br0 -o tun0 -j ACCEPT
iptables -I FORWARD -i tun0 -o br0 -j ACCEPT
iptables -I INPUT -i tun0 -j REJECT
iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE" > /tmp/.rc_firewall
chmod 644 ca.crt; chmod 600 userpass.conf; chmod 700 route-up.sh route-down.sh
chmod 700 /tmp/.rc_firewall
sleep 30
echo "client
dev tun
proto $PROTOCOL
script-security 2
hand-window 60
verb 3
mute 5
mtu-disc yes
resolv-retry infinite
nobind
persist-key
persist-tun
keepalive 20 120
reneg-sec 0
log btguard.log
ca ca.crt
cipher AES-256-CBC
auth SHA512
mute-replay-warnings
daemon
auth-user-pass userpass.conf
$REMOTE_SERVERS" > openvpn.conf
ln -s /tmp/btguard/btguard.log /tmp/btguard.log
(killall openvpn; openvpn --config /tmp/btguard/openvpn.conf --route-up /tmp/btguard/route-up.sh --down-pre /tmp/btguard/route-down.sh) &
exit 0