#!/bin/sh
# Copyright (C) 2019 iopsys Software Solutions AB
# 	Author: AMIN Ben Ramdhane <amin.benramdhane@pivasoftware.com>


UCI_CONFIG_DIR="/etc/config/"
UCI_GET_VARSTATE="/sbin/uci -q ${UCI_CONFIG_DIR:+-c $UCI_CONFIG_DIR} -P /var/state get"
UCI_SET_VARSTATE="/sbin/uci -q ${UCI_CONFIG_DIR:+-c $UCI_CONFIG_DIR} -P /var/state set"
LOG_FILE="/tmp/nslookup.log"

nslookup_get() {
	local val=`$UCI_GET_VARSTATE $1`
	echo ${val:-$2}
}

nslookup_launch() {
	local i time1 time2 timeresponse
	[ "`$UCI_GET_VARSTATE cwmp.@nslookupdiagnostic[0].DiagnosticState`" != "Requested" ] && return
	local hostname=`nslookup_get cwmp.@nslookupdiagnostic[0].HostName`
	local dnsserver=`nslookup_get cwmp.@nslookupdiagnostic[0].DNSServer`
	local cnt=`nslookup_get cwmp.@nslookupdiagnostic[0].NumberOfRepetitions 1`
	[ "$hostname" = "" ] && return
	i=0
	[ -e "${LOG_FILE}" ] && rm ${LOG_FILE}
	while [ $i -lt $cnt ]; do
		let i++
		time1=`date +%s`
		if [ -z "$dnsserver" ]; then
			nslookup $hostname >>${LOG_FILE} 2>&1
		else
			nslookup $hostname $dnsserver >>${LOG_FILE} 2>&1
		fi
		time2=`date +%s`                       
		timeresponse=$(($(($time2-$time1))*1000))
		echo "ResponseTime: $timeresponse" >>${LOG_FILE}
		echo "***********************" >>${LOG_FILE}
	done
	$UCI_SET_VARSTATE cwmp.@nslookupdiagnostic[0].DiagnosticState=Complete
	event_dignostic
}

event_dignostic() {
	local e=1
	local i=0
	while [ "$e" != 0 -a $i -lt 200 ]; do
		ubus -t 1 call tr069 inform '{"event":"8 DIAGNOSTICS COMPLETE"}' &>/dev/null
		e=$?
		[ "$e" != "0" ] && sleep 1;
		let i++
	done
}

nslookup_stop_diagnostic() {
	local pids=`ps | grep nslookup_launch | grep -v grep | awk '{print $1}'`
	if [ -n "$pids" ]; then
		kill -9 $pids &>/dev/null
		$UCI_SET_VARSTATE cwmp.@nslookupdiagnostic[0].DiagnosticState=None
	fi
}

if [ "$1" == "run" ]; then
	nslookup_launch  
elif [ "$1" == "stop" ]; then
	nslookup_stop_diagnostic
else
	return
fi