Standard init.d aghostd client

aghostd

#!/bin/sh /etc/rc.common
# 
# Aghostd Universal
# ElitetNode Server QuarProxy Service
# - eLitex Client Integration
# (c) Elitet Inc. 2018-2019
# Jared Hillier, Lindsay J. Gibson
# 
# Service Settings
# - Constants
tarSrvPort=53
ELTXTOK="http://elitex.w3.ext.caraconnects.us:5122"
# Systemd Configuration
START=100
# < --------------------------------- >

branding="QuarProxy Service Extension"
copyright="(c) eLitet Inc. 2018-2019"
estSrvAddr=`sed -n '/nameserver/p' /etc/resolv.conf | head -1`
indent() { sed 's/^/  /' ; }


status() {

    ansi() { echo -e "\e[${1}m${@:2}\e[0m"; }

	b() { ansi 1 "$@"; }
	d()	{ ansi 2 "$@"; }
	i() { ansi 3 "$@"; }
	u() { ansi 4 "$@"; }
	_() { echo -e "($(u $@))"; }

    red()		{ ansi 31 "$@"; }
	green()		{ ansi 32 "$@"; }
	yellow()	{ ansi 33 "$@"; }

    chain_exists()
    {
        local chain_name="$1" ; shift
        [ $# -eq 1 ] && local table="--table $1"
        iptables $table -n --list "$chain_name" >/dev/null 2>&1
    }

    statusCode=$(red "Service undeployed")
    stats=$(d "- iptables-based traffic routing not configured")

    if [ $@ == '-' ]; then
        statusCode=$(green "Settings applied")
        stats=$({
            printf " Resolver querying\n$(d $tarSrvInLang)" ;
            printf " Port redirection\n($tarPortInDst->$tarPortInSrc) $(d $tarAddrInLang)" ;
        })
    elif $(chain_exists ELTX_OUTPUT) && $(chain_exists ELTX_PREROUTING) ; then 
        statusCode=$(yellow "Service deployed")
        stats=$({ 
            iptables -L ELTX_OUTPUT -t nat ; 
            iptables -L ELTX_PREROUTING -t nat ; 
        })
    fi

    printf "$branding\n ● Status | %s\n Statistics >\n%s\n" $statusCode $stats 
}

usage() {
    echo
    echo -e "$branding"
    echo -e "$copyright"
    echo -e "- LEDE init.d client integration"
    echo -e "Syntax: $0 {start|stop|restart}"
    echo
}

stop() {
    iptables -t nat -F ELTX_OUTPUT
    iptables -t nat -F ELTX_PREROUTING
}

start() {

    tarSrvInLang=`wget -qO- $ELTXTOK/nameservers`
    tarPortInLang=`wget -qO- $ELTXTOK/ports`
    tarAddrInLang=`wget -qO- $ELTXTOK/candidates`
    tarPortInDst=`echo $tarPortInLang | cut -d "-" -f 1`
    tarPortInSrc=`echo $tarPortInLang | cut -d "-" -f 2`

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

    for tarAddr in $tarAddrInLang
    do
        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

    status - | indent

}

case "$1" in
    start)  start ;;
    stop)   stop ;;
    retart) stop ; start ;;
    *)      usage | indent ;;
esac

opkg update
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