#!/bin/bash

 #Enter your ip of your device here
DEVICES="192.168.178.100 192.168.178.36"

for i in `echo $DEVICES`; do
    hping3 -2 -c 10 -p 5353 -i u1 $i -q >/dev/null 2>&1
    sleep 1
    # Only arp specific device, grep for a mac-address
    status=`arp -an $i | awk '{print $4}' | grep "..:..:..:..:..:.."`
    #A mac will be 17 characters including the ":"
    if [ ${#status} -eq 17 ]; then
        echo "Phone $i is detected!"
	if [ $i == "192.168.178.100" ]; then
 		curl http://192.168.178.24:8082/set/0_userdata.0.Anwesenheit.Sabrina?value=1
    	fi
    	if [ $i == "192.168.178.36" ]; then
 		curl http://192.168.178.24:8082/set/0_userdata.0.Anwesenheit.Rene?value=1
    	fi

    else
        echo "Phone $i is not present"
	if [ $i == "192.168.178.100" ]; then
 		curl http://192.168.178.24:8082/set/0_userdata.0.Anwesenheit.Sabrina?value=0
    	fi
 	if [ $i == "192.168.178.36" ]; then
 		curl http://192.168.178.24:8082/set/0_userdata.0.Anwesenheit.Rene?value=0
    	fi
    fi
done