bbfdm/scripts/functions/serverselection_launch

#!/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"

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

serverselection_launch() {
	local i res ba stc times sc1 success_count min_time avg_time max_time avg_time_sum min max micros
	local fasthost avg_time_host min_time_host max_time_host
	[ "$1" == "cwmp" ] && [ "`$UCI_GET_VARSTATE cwmp.@serverselectiondiagnostic[0].DiagnosticState`" != "Requested" ] && return
	local hostlist=`serverselection_get cwmp.@serverselectiondiagnostic[0].HostList`
	local cnt=`serverselection_get cwmp.@serverselectiondiagnostic[0].NumberOfRepetitions 3`
	local timeout=`serverselection_get cwmp.@serverselectiondiagnostic[0].Timeout 1000`
	local port=`serverselection_get cwmp.@serverselectiondiagnostic[0].port`
	local protoversion=`serverselection_get cwmp.@serverselectiondiagnostic[0].ProtocolVersion Any`
	local proto=`serverselection_get cwmp.@serverselectiondiagnostic[0].Protocol ICMP`
	[ "$hostlist" = "" ] && return
	timeout=$((timeout/1000))
	[ "$timeout" = "0" ] && timeout="1"
	micros=1000
	success_count=0
	avg_time_sum=0
	avg_time_host=9999999
	min=9999999
	max=0
	i=0

	for host in $(echo $hostlist | tr "," "\n"); do
		if [ "$proto" == "ICMP" ]; then
			while [ $i -lt $cnt ]; do
				let i++
				[ "$protoversion" = "Any" ] && res=$(ping -q -c 1 -W $timeout $host 2>&1)
				[ "$protoversion" = "IPv4" ] && res=$(ping -q -4 -c 1 -W $timeout $host 2>&1)
				[ "$protoversion" = "IPv6" ] && res=$(ping -q -6 -c 1 -W $timeout $host 2>&1)
				ba=`echo "$res" | grep "bad address"`
				[ -n "$ba" ] && { $UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].DiagnosticState=Error_CannotResolveHostName; break; }
				ba=`echo "$res" | grep "unknown host"`
				[ -n "$ba" ] && { $UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].DiagnosticState=Error_CannotResolveHostName; break; }
				stc=`echo "$res" | grep "received"`
				[ -z "$stc" ] && { $UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].DiagnosticState=Error_Other; break; }
				times=`echo "$res" | grep "min/avg/max"`
				[ -z "$times" ] && break
				sc1=`echo $stc | awk '{print $4}'`
				sc1=${sc1:-0}
				success_count=$((success_count+sc1))
				times=`echo $times | awk -F'=' '{ print $2 }'`
				min_time=`echo $times | awk -F'[=/ ]' '{ print $1 }'`	
				avg_time=`echo $times | awk -F'[=/ ]' '{ print $2 }'`
				max_time=`echo $times | awk -F'[=/ ]' '{ print $3 }'`
				min_time=${min_time:-0}
				avg_time=${avg_time:-0}
				max_time=${max_time:-0}
				min_time=$(echo $min_time $micros | awk '{printf "%3.0f\n",$1*$2}')
				avg_time=$(echo $avg_time $micros | awk '{printf "%3.0f\n",$1*$2}')
				max_time=$(echo $max_time $micros | awk '{printf "%3.0f\n",$1*$2}')
				[ $min_time -lt $min ] && min=$min_time
				[ $max_time -gt $max ] && max=$max_time
				avg_time_sum=$((avg_time_sum+avg_time))
			done
		else
			while [ $i -lt $cnt ]; do
				[ "$port" = "" ] && return
				let i++
				[ "$protoversion" = "Any" ] && res=$(nping -c 1 --udp --dest-port $port --data-length 24 $host 2>&1)
				[ "$protoversion" = "IPv4" ] && res=$(nping -4 -c 1 --udp --dest-port $port --data-length 24 $host 2>&1)
				[ "$protoversion" = "IPv6" ] && res=$(nping -6 -c 1 --udp --dest-port $port --data-length 24 $host 2>&1)
				ba=`echo "$res" | grep "RCVD"`
				[ -z "$ba" ] && { $UCI_SET_VARSTATE cwmp.@ippingdiagnostic[0].DiagnosticState=Error_CannotResolveHostName; return; }
				stc=`echo "$res" | grep "RCVD" | grep "unreachable"`
				[ -n "$stc" ] && { $UCI_SET_VARSTATE cwmp.@ippingdiagnostic[0].DiagnosticState=Error_Other; return; }
				times=`echo "$res" | grep "rtt"`
				[ -z "$times" ] && continue
				sc1=`echo "$res" | grep "Rcvd" | awk -F': ' '{print $3}' | awk -F'(' '{ print $1 }'`
				sc1=${sc1:-0}
				success_count=$((success_count+sc1))
				max_time=`echo $times | awk -F': ' '{ print $2 }' | awk -F'ms' '{ print $1 }'`
				min_time=`echo $times | awk -F': ' '{ print $3 }' | awk -F'ms' '{ print $1 }'`
				avg_time=`echo $times | awk -F': ' '{ print $4 }' | awk -F'ms' '{ print $1 }'`
				min_time=${min_time:-0}
				avg_time=${avg_time:-0}
				max_time=${max_time:-0}
				min_time=$(echo $min_time $micros | awk '{printf "%3.0f\n",$1*$2}')
				avg_time=$(echo $avg_time $micros | awk '{printf "%3.0f\n",$1*$2}')
				max_time=$(echo $max_time $micros | awk '{printf "%3.0f\n",$1*$2}')
				[ $min_time -lt $min ] && min=$min_time
				[ $max_time -gt $max ] && max=$max_time
				avg_time_sum=$((avg_time_sum+avg_time))
			done
		fi
		[ $success_count -gt 0 ] && avg_time=$((avg_time_sum/success_count)) || avg_time=0
		[[ "$avg_time" != "0" && $avg_time -lt $avg_time_host ]] && avg_time_host=$avg_time && min_time_host=$min && max_time_host=$max && fasthost=$host
		success_count=0
		avg_time_sum=0
		min=9999999
		max=0
		i=0
	done
	$UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].DiagnosticState=Complete
	$UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].FastestHost=$fasthost
	$UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].AverageResponseTime=$avg_time_host
	$UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].MinimumResponseTime=$min_time_host
	$UCI_SET_VARSTATE cwmp.@serverselectiondiagnostic[0].MaximumResponseTime=$max_time_host
	[ "$1" == "cwmp" ] && 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
}

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

if [ "$1" == "run" ]; then
	serverselection_launch $2
elif [ "$1" == "stop" ]; then
	serverselection_stop_diagnostic
else
	return
fi