Active / désactive la détection motioneye selon si un ou plusieurs IPs sont présentes sur le réseau (pour désactiver automatiquement la détection quand les téléphones portables sont connectés au wifi de la maison)

motiondetection.sh

#!/bin/bash

# Time mobile offline before active detection (seconds)
IDLE_TIME_TRIGGER_DETECTION=3600

# IPs to check for availability
IP="192.168.1.89 192.168.1.92"
# motion URL
MOTION_URL="http://127.0.0.1:7999/1/detection"

# displays date for logs
date

# get previous detection status
if echo "`wget -qO- http://127.0.0.1:7999/1/detection/status`" | grep -q "ACTIVE"; then
    DETECTION_STATUS="active"
else
    DETECTION_STATUS="pause"
fi
echo "Detection status : $DETECTION_STATUS"

# send control command to motion
function motion_control () {
        wget -q -O - "$MOTION_URL/$1" | grep Camera | sed -e "s/<[^>]*>//g" -e "s/.*Camera/Camera/"
}

# check mobile presence on network
function mobile_presence () {
        # ping mobile to wake/fill arp cache
        ping -c 1 "$1" &> /dev/null
        # check if arp cache contains MAC or not (incomplete)
        arp -an | grep "$1" | grep -v "incomplete" &> /dev/null
        return $?
}

# check each mobile presence and stop motion detection if online
function presence () {
        for i in $IP; do
                sudo arp -d $i
                if mobile_presence "$i"; then
                        echo "$i is online"
			date +%s > /tmp/last_mobile_presence.txt                                
                        if [ ! "$DETECTION_STATUS" = "pause" ]; then
                                logger "device $i is online, pausing motion detection"
				motion_control pause
                        fi
                        return 0
                else
                        echo "$i is offline"
                fi
        done
        return 1
}

# main script : if no mobile online, start motion detection
if ! presence; then
	echo "$IP appear to be offline... retrying..."
	if presence; then
		exit 0
	fi
	echo "$IP is/are offline"
	if [ ! "$DETECTION_STATUS" = "active" ]; then
		echo "No device is online"
		typeset -i LAST_MOBILE_PRESENCE=$(cat /tmp/last_mobile_presence.txt)
		IDLE_TIME=$(($(date +%s)-$LAST_MOBILE_PRESENCE))
		echo "Idle time : $IDLE_TIME (min idle time to trigger detection : $IDLE_TIME_TRIGGER_DETECTION)"
		if (($IDLE_TIME>=$IDLE_TIME_TRIGGER_DETECTION)); then
			echo "Starting motion detection"
			motion_control start
		fi
	fi
fi