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presencedetection.sh
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presencedetection.sh
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#!/bin/sh
#
# presence detection for home router (e.g. Fritzbox)
# It sets variables to true/falso on the CCU2 depending on the presence of that person/group
# This script can be found on: https://github.com/jollyjinx/homematic
#
# You need to adjust the script to your network setup, so read on:
#
# 1. Adjust the network addresses and names for the persons in this script
# 2. Install this script on your router, so it starts after reboot (on a fritzbox via debug.cfg)
# 4. enjoy
#
# Ajusting this script
# --------------------
# I'm using variables on the CCU2 for presence detection:
#
# presence.patrick is set to beeing present when his ethernet address shows up
# presence.nightguests is set when their ethernet addresses show up or devices in a network range
# presence.dayguests is set when their ethernet addresses show up or devices in a network range
# presence.any is set when patrick or guests is set.
#
# My local network is set up to be in 192.168.0.0 - 192.168.0.255
# Stationary devices are in the range 192.168.0.0-192.168.0.139 and 192.168.0.200-192.168.0.255
# Guests are either in the guest network 192.168.179.* or in the range 192.168.0.140-192.168.0.199
#
# As my network setup is different than yours you have to adjust the variable regular expressions
# to your needs
#
#
# At the start of the script presence variables are created on the box in case they don't exist.
# This script uses 'nc' for creating the presense variables on the CCU2 and wget to setting the variables
#
#
# Variables for you to change:
#
ccu2address="hmccu2" # ip address or network name of CCU2
set patrick nightguests dayguests # variables to set on the CCU2 and their presence check
patrick="80:ea:96:94:5a:66" # patricks presence detection device (iphone)
nightguests="192.168.0.1[4-9][0-9]" # overnight guests 192.168.140-199
dayguests="192.168.0.2[2-4][0-9]|192.168.179.[1-2]?[0-9]+" # dayguests 192.168.0.220-249 , 192.168.179.*
#
# The next variables are usually nothing you need to change
#
ignore="<incomplete>|at[\t ]+(00:0c:29|00:50:56|00:1c:42):" # ignore incomplete, vmware and parallels addresses
looptime=30 # how often we check in seconds
maximumcounter=45 # how many loops of looptime until somebody is no longer present
intialcounter=4 # default counter for each presence variable at start
variableprefix="presence.wlan." # prefix for the variables on the ccu2
someonename="any" # variable name if someone is present
debug=false
$debug && looptime=5
#
# There is nothing below this line that needs to be changed
#
#
RETURN_FAILURE=1
RETURN_SUCCESS=0
getorsetpresenceVariableState()
{
local name=$1
local setstate=$2
if [ "$setstate" != "" ]
then
local currentstate=`getorsetpresenceVariableState $name`
if [ "$currentstate" == "$setstate" ]
then
echo -n "$currentstate"
return $RETURN_SUCCESS
fi
fi
local wgetreturn=$(wget -q -O - "http://$ccu2address:8181/rega.exe?state=dom.GetObject('$variableprefix$name').State($setstate)"|egrep -o '<state>(false|true)</state></xml>$')
if [ "<state>true</state></xml>" == "$wgetreturn" ]
then
echo -n "1"
return $RETURN_SUCCESS
fi
if [ "<state>false</state></xml>" == "$wgetreturn" ]
then
echo -n "0"
return $RETURN_SUCCESS
fi
echo -n "-1"
return $RETURN_FAILURE
}
createPresenceVariableOnCCUIfNeeded()
{
local name=$1
getorsetpresenceVariableState $name >/dev/null && return $RETURN_SUCCESS
if [ ! -f /usr/bin/nc ]
then
echo "WARNING: /usr/bin/nc does not exist you need to create $variableprefix$name on CCU2 manually"
return $RETURN_FAILURE
fi
local postbody="string v='$variableprefix$name';boolean f=true;string i;foreach(i,dom.GetObject(ID_SYSTEM_VARIABLES).EnumUsedIDs()){if(v==dom.GetObject(i).Name()){f=false;}};if(f){object s=dom.GetObject(ID_SYSTEM_VARIABLES);object n=dom.CreateObject(OT_VARDP);n.Name(v);s.Add(n.ID());n.ValueType(ivtBinary);n.ValueSubType(2);n.DPInfo(v#' is at home');n.ValueName1('anwesend');n.ValueName0('abwesend');n.State(false);dom.RTUpdate(0);}"
local postlength=$(echo "$postbody" | wc -c)
echo -e "POST /tclrega.exe HTTP/1.0\r\nContent-Length: $postlength\r\n\r\n$postbody" |nc "$ccu2address" 80 >/dev/null 2>&1
getorsetpresenceVariableState $name >/dev/null
}
#
# main
#
for name in $@ $someonename
do
createPresenceVariableOnCCUIfNeeded $name
eval personcounter$name=$intialcounter
eval ccupersonstate$name=`getorsetpresenceVariableState $name`
eval samestatecounter$name=1
done
#
# This is the main loop to check if somebody is present
#
while true
do
anygrepoutput=""
arpoutput=$(arp -an |egrep -vi "$ignore"|grep 'at')
for name in $@ $someonename
do
$debug && echo "Name: $name"
if [ $name != $someonename ]
then
eval addresstocheck=\$$name
grepoutput=$(echo "$arpoutput"|egrep -io "$addresstocheck")
else
grepoutput=$anygrepoutput
fi
if [ -n "$grepoutput" ];
then
$debug && echo " Found in grepoutput"
anygrepoutput=$anygrepoutput','$name
newcounter=$maximumcounter
newstate="1"
else
$debug && echo " Did not find in grepoutput"
eval currentcounter=\$personcounter$name
newcounter=`expr $currentcounter - 1 \| 1`
newstate="0"
fi
$debug && echo " newcounter:$newcounter newstate:$newstate"
if [ $newcounter -eq 1 -o $newcounter -eq $maximumcounter ]
then
eval oldstate=\$ccupersonstate$name
$debug && echo " oldstate: $oldstate"
if [ "$newstate" != "$oldstate" ]
then
$debug && echo " State differs setting on CCU immediately"
eval ccupersonstate$name=`getorsetpresenceVariableState $name $newstate`
eval samestatecounter$name=$maximumcounter
else
$debug && echo " State same, counting 2nd Variable"
eval samestatecounter=\$samestatecounter$name
samestatecounter=`expr $samestatecounter - 1 \| 1`
$debug && echo " samestatecounter:$samestatecounter"
if [ $samestatecounter -eq 1 ]
then
$debug && echo " setting state:$newstate on CCU"
eval ccupersonstate$name=`getorsetpresenceVariableState $name $newstate`
eval samestatecounter$name=$maximumcounter
else
eval samestatecounter$name=$samestatecounter
fi
fi
fi
eval personcounter$name=$newcounter
done
sleep $looptime
$debug && echo ; echo;
done