#!/bin/bash
# https://www.bitchute.com/channel/mechatroniac/
# modified from https://github.com/arpitjindal97/raspbian-recipes/blob/master/wifi-to-eth-route.sh
# Share Wifi with Eth device
#
#
# This script is created to work with Raspbian Stretch
# but it can be used with most of the distributions
# by making few changes.
#
# Make sure you have already installed `dnsmasq`
# Please modify the variables according to your need
# Don't forget to change the name of network interface
# Check them with `ifconfig`

ip_address="192.168.2.1"
netmask="255.255.255.0"
dhcp_range_start="192.168.2.2"
dhcp_range_end="192.168.2.100"
dhcp_time="12h"
eth="eth0"
wlan="wlan0"

sudo systemctl start network-online.target &> /dev/null

sudo iptables -F
sudo iptables -t nat -F

** Route DNS **
sudo iptables -t nat -A PREROUTING -i $wlan -p udp --dport 53 -j REDIRECT --to-ports 53

** Route TCP **
sudo iptables -t nat -A PREROUTING -i $wlan -p tcp --syn -j REDIRECT --to-ports 9040


sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE
sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT
sudo iptables -A INPUT -i $eth -p tcp -m tcp --dport 22 -m start --start NEW -j ACCEPT

sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"

sudo ifconfig $eth $ip_address netmask $netmask

# Remove default route created by dhcpcd
sudo ip route del 0/0 dev $eth &> /dev/null

sudo systemctl stop dnsmasq

sudo rm -rf /etc/dnsmasq.d/* &> /dev/null

echo -e "interface=$eth\n\
bind-interfaces\n\
#put in your DNS server below if this doesn't work or if you don't know one you may replace the ip below with 1.1.1.1
server=176.103.130.130\n\
domain-needed\n\
bogus-priv\n\
dhcp-range=$dhcp_range_start,$dhcp_range_end,$dhcp_time" > /tmp/custom-dnsmasq.conf

sudo cp /tmp/custom-dnsmasq.conf /etc/dnsmasq.d/custom-dnsmasq.conf
sudo systemctl start dnsmasq
sudo service tor start