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#!/bin/sh /etc/rc.common
# Copyright (C) 2006-2011 OpenWrt.org
#
# auto startup script for redsocks2 on OpenWrt
# this file is located in directory /etc/init.d
# rename this file to redsocks

START=95

SERVICE_USE_PID=1
SERVICE_WRITE_PID=1
SERVICE_DAEMONIZE=1

start() {
	echo starting redsocks2...
	/opt/bin/redsocks2 -c /etc/redsocks.conf

	echo loading redsocks2 firewall rules...
	load_firewall

	echo done.
}

stop() {
	echo stopping redsocks2...
	killall -9 redsocks2

	echo flushing redsocks2 firewall rules...
	flush_firewall

	echo done.
}

load_firewall() {
	# create a new chain named REDSOCKS
	iptables -t nat -N REDSOCKS

	# Ignore LANs IP address
	iptables -t nat -A REDSOCKS -d 0.0.0.0/8 -j RETURN
	iptables -t nat -A REDSOCKS -d 10.0.0.0/8 -j RETURN
	iptables -t nat -A REDSOCKS -d 127.0.0.0/8 -j RETURN
	iptables -t nat -A REDSOCKS -d 169.254.0.0/16 -j RETURN
	iptables -t nat -A REDSOCKS -d 172.16.0.0/12 -j RETURN
	iptables -t nat -A REDSOCKS -d 192.168.0.0/16 -j RETURN
	iptables -t nat -A REDSOCKS -d 224.0.0.0/4 -j RETURN
	iptables -t nat -A REDSOCKS -d 240.0.0.0/4 -j RETURN

	# Anything else should be redirected to redsocks's local port
	iptables -t nat -A REDSOCKS -p tcp -j REDIRECT --to-ports 1081

	# Apply the rules
	iptables -t nat -I zone_lan_prerouting -j REDSOCKS
}

flush_firewall() {
	iptables -t nat -F REDSOCKS
	sleep 1
	iptables -t nat -D zone_lan_prerouting -j REDSOCKS
	iptables -t nat -X REDSOCKS
}

base {
	log_debug = off;
	log_info = off;
	daemon = on;
	redirector= iptables;
}

redsocks {
	# rename this address to local ip
	local_ip = 192.168.1.1;
	local_port = 1081;
	# rename this ip to socks5 ip
	ip = 192.168.1.1;
	port = 1080;
	type = socks5; // I use socks5 proxy for GFW'ed IP
	autoproxy = 1; // I want autoproxy feature enabled on this section.
	            // The two lines above have same effect as
	            //    type = autosocks5;
	            // in previous release.
	// timeout is meaningful when 'autoproxy' is non-zero.
	// It specified timeout value when trying to connect to destination
	// directly. Default is 10 seconds. When it is set to 0, default
	// timeout value will be used.
	timeout = 10;
	//type = http-connect;
	//login = username;
	//password = passwd;
}