#!/bin/bash /usr/lib/turtle/turtle_module
VERSION="0.3"
DESCRIPTION="TORTLE - TOR TURTLE Gateway + TOR Hidden Shell"
AUTHOR="Shad"

: ${DIALOG_OK=0}
: ${DIALOG_CANCEL=1}
: ${DIALOG_HELP=2}
: ${DIALOG_EXTRA=3}
: ${DIALOG_ITEM_HELP=4}
: ${DIALOG_ESC=255}

function tortlecfg {
	if [ ! -e "/etc/config/tortle" ]; then
		touch /etc/config/tortle
		uci set tortle.socksip="172.16.84.1"
		uci set tortle.socksport="5090"
		uci set tortle.tport="22"
		uci set tortle.lport="22"
		uci set tortle.forwarding="1"
		uci commit tortle
        fi                                        
	if [ -e "/var/lib/tor/hidden/hostname" ]; then
		tortle_hostname="$(cat /var/lib/tor/hidden/hostname)"
		uci set tortle.hostname="$tortle_hostname"
	else
	        tortle_hostname="You need to start/run tor first to obtain an onion address"
	fi
	tortle_tport="$(uci get tortle.tport)"
	tortle_lport="$(uci get tortle.lport)"
	tortle_socksip="$(uci get tortle.socksip)"
	tortle_socksport="$(uci get tortle.socksport)"
	tortle_forwarding="$(uci get tortle.forwarding)"

}


function configure {
if [ "$tortle_hostname" == "" ]; then
	tortle_hostname="You need to start/run tortle first to obtain an onion address"
fi
tortlecfg

  dialog --title "tortle" --msgbox "\n\
NOTE: This is an initial version.\n\\n\
TOR SHELL\n\
=========\n\
Until I finish testing and add the code to customize its parameters in the gui, these are the defaults:\n\n\
Hostname: $tortle_hostname\n\
TOR Port: $tortle_tport (Redirects to local port $tortle_lport)\n\n\

TOR GATEWAY\n\
===========\n\
At this time, it is just a regular TOR Proxy but my plan is to evolve it into a much more convenient and secure fully isolating Gateway.\n\n
The LAN Turtle (with its two ethernet interfaces) is clearly perfect for that purpose, although I have to figure the best way to do it without 
affecting the operation of other modules/functions that may be running at the same time (some iptables playing needed).\n\n\
In the meantime, please notice DNS or other well known leaks are NOT being actively prevented. Use it accordingly.\n\n\
TOR Proxy is in $tortle_socksip:$tortle_socksport\n \n" 33 72
}


function start {
	if [ ! -e "/usr/sbin/tor" ]; then
		opkg update && opkg install tor
	fi
	if [ ! -e "/var/lib/tor" ]; then
		mkdir -p /var/lib/tor
		chown sshd.sshd /var/lib/tor
	fi
	tortlecfg
	(
	echo "User sshd"
	echo "RunAsDaemon 1"
	echo "PidFile /tmp/tor.pid"
	echo "DataDirectory /var/lib/tor"
	echo "SocksPort $tortle_socksip:$tortle_socksport"
	#echo "DNSPort 53"
	echo "HiddenServiceDir /var/lib/tor/hidden/"
	echo "HiddenServicePort $tortle_tport 127.0.0.1:$tortle_lport"
	) > /tmp/tortlerc
	echo "$tortle_forwarding" > /proc/sys/net/ipv4/ip_forward                     
}	


function stop {
	killall -9 tor
	echo "1" > /proc/sys/net/ipv4/ip_forward    
	echo "Tortle Proxy and Tortle Shell have been stopped."
}


function status {
	if pgrep -x tor > /dev/null; then
		echo "1"	
	else 
		echo "0"
	fi
}