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112 lines
2.7 KiB
112 lines
2.7 KiB
6 years ago
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#!/bin/bash
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# This script runs on after start in background
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# as a service and gets restarted on failure
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# it runs ALMOST every seconds
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# INFOFILE - state data from bootstrap
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infoFile="/home/admin/raspiblitz.info"
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# CONFIGFILE - configuration of RaspiBlitz
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configFile="/mnt/hdd/raspiblitz.conf"
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# Check if HDD contains configuration
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configExists=$(ls ${configFile} | grep -c '.conf')
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if [ ${configExists} -eq 1 ]; then
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source ${configFile}
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fi
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counter=0
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while [ 1 ]
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do
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###############################
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# Prepare this loop
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###############################
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# count up
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counter=$(($counter+1))
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echo "counter($counter)"
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####################################################
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# RECHECK DHCP-SERVER
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# https://github.com/rootzoll/raspiblitz/issues/160
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####################################################
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# every 5 minutes
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triggerRecheckDHCP=$(((counter % 300)+1))
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if [ triggerRecheckDHCP -eq 1 ]; then
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echo "*** RECHECK DHCP-SERVER ***"
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# get the local network IP
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localip=$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')
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echo "localip(${localip})"
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# detect a missing DHCP config
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if [ "${localip:0:4}" = "169." ]; then
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echo "Missing DHCP detected ... trying emergency reboot"
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sudo shutdown -r now
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else
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echo "DHCP OK"
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fi
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fi
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####################################################
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# RECHECK PUBLIC IP
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# when public IP changes, restart LND with new IP
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####################################################
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# every 15min - not too often
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# because its a ping to external service
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recheckPublicIP=$(((counter % 60)+1))
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if [ recheckPublicIP -eq 1 ]; then
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echo "*** RECHECK PUBLIC IP ***"
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# execute only after setup when config exists
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if [ ${configExists} -eq 1 ]; then
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# get actual public IP
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freshPublicIP=$(curl -s http://v4.ipv6-test.com/api/myip.php 2>/dev/null)
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echo "freshPublicIP(${freshPublicIP})"
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echo "publicIP(${publicIP})"
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# check if changed
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if [ "${freshPublicIP}" != "${publicIP}" ]; then
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# 1) update config file
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echo "update config value"
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sed -i "s/^publicIP=.*/publicIP=${freshPublicIP}/g" ${configFile}
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publicIP=${freshPublicIP}
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# 2) restart the LND
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echo "restart LND with new environment config"
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sudo systemctl restart lnd.service
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else
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echo "public IP has not changed"
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fi
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else
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echo "skip - because setup is still running"
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fi
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fi
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###############################
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# Prepare next loop
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###############################
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# sleep 1 sec
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sleep 1
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# limit counter to max seconds per week:
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# 604800 = 60sec * 60min * 24hours * 7days
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if [ ${counter} -gt 1000 ]; then
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counter=0
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echo "counter zero reset"
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fi
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done
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