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jitsi_NAT_updater.sh
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jitsi_NAT_updater.sh
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#!/bin/bash -l
#===============================================================================
#
# FILE: jitsi_NAT_updater.sh
#
# USAGE: ./jitsi_NAT_updater.sh
#
# DESCRIPTION: set it as a crontab for check if external ip differs from configured ip
# OPTIONS: LOGPATH,LOGFILE,ERRORLOG,SERVICEx,CONFx,DNSNAME
# AUTHOR: Andre Stemmann
# CREATED: 06.05.2020 21:47
# REVISION: v0.1
#===============================================================================
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
set -o nounset # Treat unset variables as an error
#===============================================================================
# BASE VARIABLES
#===============================================================================
# script vars
start=$(date +%s)
PROGGI=$(basename "$0")
# user vars
LOGPATH="/var/log"
LOGFILE="${LOGPATH}/syslog"
ERRORLOG="${LOGPATH}/syslog"
SERVICE1="jitsi-videobridge2"
SERVICE2="jicofo"
CONF1="/etc/hosts"
CONF2="/etc/jitsi/videobridge/sip-communicator.properties"
DNSNAME="your.fancy.domain.com"
# ===============================================================================
# BASE FUNCTIONS
# ===============================================================================
function log () {
echo "$PROGGI ; $(date '+%Y%m%d %H:%M:%S') ; $*" | tee -a "${LOGFILE}"
}
function errorlog () {
echo "${PROGGI}_ERRORLOG ; $(date '+%Y%m%d %H:%M:%S') ; $*" | tee -a "${ERRORLOG}"
}
function usercheck () {
if [[ $UID -ne 0 ]]; then
errorlog "...Become user root and try again"
exit 1
fi
}
function service_restart () {
if systemctl is-active --quiet "$1"; then
log "...stopping $1"
systemctl stop "$1"
sleep 3
else
log "...service $1 already stopped"
if ! systemctl is-active --quiet "$1"; then
log "...service $1 stopped"
else
log "...service $1 still running, trying to SIGTERM it now"
kill -15 "$1"
sleep 3
if ! systemctl is-active --quiet "$1"; then
log "...service $1 stopped"
else
log "...service $1 still running, trying to SIGKILL it now"
kill -9 "$1"
sleep 3
fi
fi
fi
systemctl start "$1"
sleep 3
if systemctl is-active --quiet "$1"; then
log "...$1 is safe and sound"
else
errorlog "...Failed to start $1"
errorlog "...Trying it again"
systemctl start "$1"
sleep 3
if systemctl is-active --quiet "$1"; then
log "...$1 is safe and sound"
else
errorlog "...Failed to start $1"
errorlog "...CRITICAL - check manually"
fi
fi
}
function iprenew () {
if [ "$realip" != "$confip" ]; then
log "...configs must updated with new IP $realip"
if sed -i 's/'"$confip"'/'"$realip"'/g' "$CONF1"; then
log "...updated $CONF1 successfully"
else
errorlog "...Failed to update $CONF1 properly!"
errorlog "...Please re-check manually!"
fi
if sed -i 's/'"$confip'/'$realip"'/g' "$CONF2"; then
log "...updated $CONF2 successfully"
else
errorlog "...Failed to update $CONF2 properly"
errorlog "...Please re-check manually!"
fi
else
log "...everthing is up to date"
end=$(date +%s)
runtime=$((end-start))
log "...Runtime $runtime Seconds"
exit 0
fi
}
# ===============================================================================
# MAIN RUN
# ===============================================================================
usercheck
confip=$(grep "$DNSNAME" /etc/hosts |cut -d" " -f1)
realip=$(dig +short myip.opendns.com @resolver1.opendns.com)
log "Jitsi_NAT_Updater Config"
log "########################"
log "logfile location : $LOGFILE"
log "IP Adress configured: $confip"
log "Actual IP Address : $realip"
iprenew
service_restart "$SERVICE2"
service_restart "$SERVICE1"
end=$(date +%s)
runtime=$((end-start))
log "...Runtime $runtime Seconds"
exit 0