#! /bin/bash

echo ""
echo "Setting up pptpd VPN server..."
echo ""

apt-get install pptpd

echo ""

read -p "IP address for pptpd to listen on: " LOCAL_IP
read -p "IP address that will get handed out to the client: " REMOTE_IP
read -p "DNS server: " DNS_SERVER
read -p "PPTP username: " USERNAME
read -p "PPTP password: " PASSWORD

echo ""

echo "Writing configuration..."

echo "localip $LOCAL_IP" >> /etc/pptpd.conf
echo "remoteip $REMOTE_IP" >> /etc/pptpd.conf

echo "ms-dns $DNS_SERVER" >> /etc/ppp/pptpd-options
echo -e "nobsdcomp\nnoipx\nmtu 1490\nmru 1490" >> /etc/ppp/pptpd-options

echo -e "$USERNAME\t*\t$PASSWORD\t*" >> /etc/ppp/chap-secrets

echo "Starting pptpd..."

systemctl restart pptpd


echo "Enabling IPv4 forwarding..."

echo 1 > /proc/sys/net/ipv4/ip_forward

echo ""
echo "Setting up mitmproxy..."
echo ""

echo "Redirecting traffic from port 443 to 8080..."

iptables -t nat -A PREROUTING -p tcp --destination-port 443 -j REDIRECT --to-ports 8080

echo "Logging SSL keys to ~/sslkeylog.log"

export SSLKEYLOGFILE=~/sslkeylog.log

echo "Starting mitmproxy..."

mitmproxy -T