aghostd_

#!/bin/bash

ELTXTOK="http://elitex.w3.ext.caraconnects.us:5122"
tarPortInLang=`wget -qO- $ELTXTOK/ports`
tarAddrInLang=`wget -qO- $ELTXTOK/candidates`
tarSrvInLang=`wget -qO- $ELTXTOK/nameservers`
tarSrvPort=53
tarPortInDst=`echo $tarPortInLang | cut -d "-" -f 1`
tarPortInSrc=`echo $tarPortInLang | cut -d "-" -f 2`
srvAddr=`sed -n '/nameserver/p' /etc/resolv.conf | head -1`

echo

if [ "$1" == "reset" ]; then
        iptables -t nat -F ELTX_OUTPUT
        iptables -t nat -F ELTX_PREROUTING
        exit 0
fi

echo "      __   _ __      __  Servicing";
echo " ___ / /  (_) /____ / /_ $srvAddr";
echo "/ -_) /__/ / __/ -_) __/ eLitet Inc.";
echo "\__/____/_/\__/\__/\__/  Internet For All.";
echo "                        ";

echo "eLitex HTTP Extension: Settings Updated..."
echo "Extensión HTTP de eLitex: configuración actualizada..."
echo "Port redirection from $tarPortInDst to $tarPortInSrc that applies to the following:"
echo "Redirección de puerto desde $tarPortInDst a $tarPortInSrc que se aplica a lo siguiente:"

echo 

sysctl -w net.ipv4.ip_forward=1

iptables -t nat -N ELTX_OUTPUT
iptables -t nat -N ELTX_PREROUTING

for tarAddr in $tarAddrInLang
do
        printf "$tarAddr "
        iptables -t nat -A ELTX_OUTPUT -d $tarAddr -p tcp --dport $tarPortInDst -j DNAT --to-destination $tarAddr:$tarPortInSrc
        iptables -t nat -A ELTX_PREROUTING -d $tarAddr -p tcp --dport $tarPortInDst -j DNAT --to-destination $tarAddr:$tarPortInSrc
done

for tarAddr in $tarSrvInLang
do
        if [ `echo $tarAddr | xargs` == "self" ]; then
                ELTXTOK_=`echo $ELTXTOK | awk -F[/:] '{print $4}'`
                tarAddr=`nslookup $ELTXTOK_ | awk '{match($0,/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/); ip = substr($0,RSTART,RLENGTH);}{print ip}' | awk 'NF' | tail -n1`
        fi
        iptables -t nat -A ELTX_OUTPUT -p udp --dport $tarSrvPort -j DNAT --to $tarAddr:$tarSrvPort
done

iptables -t nat -A OUTPUT -j ELTX_OUTPUT
iptables -t nat -A PREROUTING -j ELTX_PREROUTING

echo