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215 lines
6.8 KiB
215 lines
6.8 KiB
#!/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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# LOGS see: sudo journalctl -f -u background
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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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else
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source ${infoFile}
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fi
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echo "_background.sh STARTED"
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counter=0
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while [ 1 ]
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do
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###############################
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# Prepare this loop
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###############################
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# count up
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counter=$(($counter+1))
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# gather the uptime seconds
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upSeconds=$(cat /proc/uptime | grep -o '^[0-9]\+')
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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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recheckDHCP=$((($counter % 300)+1))
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if [ ${recheckDHCP} -eq 1 ]; then
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echo "*** RECHECK DHCP-SERVER ***"
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# get the local network IP
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localip=$(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 [ "${localip:0:4}" = "169." ]; then
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echo "Missing DHCP detected ... trying emergency reboot"
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sudo shutdown -r now
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else
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echo "DHCP OK"
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fi
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fi
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####################################################
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# CHECK FOR UNDERVOLTAGE REPORTS
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# every 1 hour scan for undervoltage reports
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####################################################
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recheckUndervoltage=$(($counter % 3600))
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if [ ${recheckUndervoltage} -eq 1 ]; then
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echo "*** RECHECK UNDERVOLTAGE ***"
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countReports=$(sudo cat /var/log/syslog | grep -c "Under-voltage detected!")
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echo "${countReports} undervoltage reports found in syslog"
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if [ ${#undervoltageReports} -eq 0 ]; then
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# write new value to info file
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undervoltageReports="${countReports}"
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echo "undervoltageReports=${undervoltageReports}" >> ${infoFile}
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else
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# update value in info file
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sed -i "s/^undervoltageReports=.*/undervoltageReports=${countReports}/g" ${infoFile}
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fi
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fi
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####################################################
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# RECHECK PUBLIC IP
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# when public IP changes, restart LND with new IP
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####################################################
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# every 15min - not too often
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# because its a ping to external service
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recheckPublicIP=$((($counter % 900)+1))
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updateDynDomain=0
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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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# sanity check on IP data
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# see https://github.com/rootzoll/raspiblitz/issues/371#issuecomment-472416349
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echo "-> sanity check of IP data: ${freshPublicIP}"
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if [[ $freshPublicIP =~ ^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$ ]]; then
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echo "OK IPv6"
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elif [[ $freshPublicIP =~ ^([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$ ]]; then
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echo "OK IPv4"
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else
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echo "FAIL - not an IPv4 or IPv6 address"
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freshPublicIP=""
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fi
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if [ ${#freshPublicIP} -eq 0 ]; then
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echo "freshPublicIP is ZERO - ignoring"
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# check if changed
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elif [ "${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) only restart LND if dynDNS is activated
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# because this signals that user wants "public node"
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if [ ${#dynDomain} -gt 0 ]; then
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echo "restart LND with new environment config"
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# restart and let to auto-unlock (if activated) do the rest
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sudo systemctl restart lnd.service
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fi
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# 2) trigger update if dnyamic domain (if set)
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updateDynDomain=1
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else
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echo "public IP has not changed"
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fi
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else
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echo "skip - because setup is still running"
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fi
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fi
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###############################
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# LND AUTO-UNLOCK
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###############################
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# check every 10secs
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recheckAutoUnlock=$((($counter % 10)+1))
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if [ ${recheckAutoUnlock} -eq 1 ]; then
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# check if auto-unlock feature if activated
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if [ "${autoUnlock}" = "on" ]; then
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# check if lnd is locked
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locked=$(sudo -u bitcoin /usr/local/bin/lncli --chain=${network} --network=${chain}net getinfo 2>&1 | grep -c unlock)
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if [ ${locked} -gt 0 ]; then
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echo "STARTING AUTO-UNLOCK ..."
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# building REST command
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passwordC=$(sudo cat /root/lnd.autounlock.pwd)
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command="sudo python /home/admin/config.scripts/lnd.unlock.py '${passwordC}'"
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bash -c "${command}"
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else
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echo "lncli says not locked"
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fi
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else
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echo "auto-unlock is OFF"
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fi
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fi
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###############################
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# UPDATE DYNAMIC DOMAIN
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# like afraid.org
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# ! experimental
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###############################
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# if not activated above, update every 6 hours
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if [ ${updateDynDomain} -eq 0 ]; then
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# dont +1 so that it gets executed on first loop
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updateDynDomain=$(($counter % 21600))
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fi
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if [ ${updateDynDomain} -eq 1 ]; then
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echo "*** UPDATE DYNAMIC DOMAIN ***"
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# check if update URL for dyn Domain is set
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if [ ${#dynUpdateUrl} -gt 6 ]; then
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# calling the update url
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echo "calling: ${dynUpdateUrl}"
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echo "to update domain: ${dynDomain}"
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curl --connect-timeout 6 ${dynUpdateUrl}
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else
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echo "'dynUpdateUrl' not set in ${configFile}"
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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 604800 ]; 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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