Freifunk Gluon Throttle Speed via Cron

throttle.sh

#!/bin/ash
#
#Check if Mesh-VPN shall be limited
#
# 1. Edit DownloadRate and UploadRate
# 2. save via vi in /etc/throttle.sh
# 3. make executable "chmod a+x /etc/throttle.sh"
# 4. add to cron to check every 15min "*/15 *  * * *   /etc/throttle.sh >/dev/null 2>&1"
# 5. edit /etc/sysupgrade.conf to protect from sysupgrade
#    add line "/etc/throttle.sh"
# 6. Run and check /var/log/throttle.log

# throttle download rate to (Bit/s)
DownloadRate=2000

# throttle upload rate to (Bit/s)
UploadRate=1000

logfile="/tmp/log/throttle.log"
#logfile=/dev/null

echo "$(date): Throttle invoked" >> $logfile

CurrentHour="$(date +%H)"
CurrentDayOfWeek="$(date +%w)"
CurrentThrottleState=$(uci get simple-tc.mesh_vpn.enabled)

DoLimit=1
case $CurrentDayOfWeek in
        0)
                #echo "Sonntag"
                DoLimit=0
                ;;
        [1-5])
                #echo "Mo,Di,Mi,Do,Fr"
                if [ $CurrentHour -lt  8 ]; then DoLimit=0; fi;
                if [ $CurrentHour -ge 18 ]; then DoLimit=0; fi;
                ;;
        6)
                #echo "Samstag"
                if [ $CurrentHour -lt  8 ]; then DoLimit=0; fi;
                if [ $CurrentHour -ge 12 ]; then DoLimit=0; fi;
                ;;
        *)
                #echo Fallback
                DoLimit=0
                ;;
esac

if [ "$DoLimit" -ne "$CurrentThrottleState" ]; then
        if [ "$DoLimit" = "1" ]; then
                echo "$(date): Meshlimit wird aktiviert, Down=$DownloadRate, Up=$UploadRate" >> $logfile
                uci set simple-tc.mesh_vpn.limit_ingress=$DownloadRate
                uci set simple-tc.mesh_vpn.limit_egress=$UploadRate
                uci set simple-tc.mesh_vpn.enabled=1
        else
                echo "$(date): Meshlimit wird deaktiviert" >> $logfile
                uci set simple-tc.mesh_vpn.enabled=0
        fi;
        uci commit simple-tc
        /etc/init.d/fastd restart
fi;