1st commit

Usage: Créer une planifiée sur le NAS exécutant toutes les 3 heures le script bash /var/services/homes/bruno/monitor-ip.sh

Envoi un email si l’adresse IP a changé depuis la dernière exécution

Requiert msmtp ou ssmtp.

email_monitor_ip.txt

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+From: router@clicclac.info
+To: bruno@clicclac.info
+Subject: DS923 IP has changed !
+
+Your content goes here. Lorem ipsum dolor sit amet, consectetur adipisicing.
+(Notice the blank space between the subject and the body.)
+

monitor-ip.pref

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+86.235.4.116
+

monitor-ip.sh

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+#!/usr/bin/env bash
+
+#gotify_server="https://gotify.photos-nas.ovh"
+host=$(hostname)
+#available=false
+#msg=
+#infos=
+
+MSMTP=$(which msmtp)
+SSMTP=$(which ssmtp)
+
+if [ -n $MSMPT ] ; then  
+	MAIL=$MSMTP
+elif [ -n $SSMTP ] && [ -z $MAIL ] ; then
+	MAIL=$SSMTP
+else
+	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
+fi
+
+dotenv () {
+  set -a
+  # shellcheck disable=SC1091
+  [ -f ".env" ] && . ".env" ||  echo -e "${red}\nNo .env file found ! No token for gotify.${reset}"
+  set +a
+}
+
+send_notification() {
+FromHost=$(hostname)
+
+# User variables:
+SendMailFrom="router@clicclac.info"
+SendMailTo="router@clicclac.info"
+SubjectTag="monitor_ip.sh"
+
+printf "\nEnvoi d'une notification email ...\n"
+
+$MAIL $SendMailTo << __EOF
+From: "$FromHost" <$SendMailFrom>
+date:$(date -R)
+To: <$SendMailTo>
+Subject: [$SubjectTag] L IP sur $FromHost a changée !
+Content-Type: text/plain; charset=UTF-8; format=flowed
+Content-Transfer-Encoding: 7bit
+
+Ancienne IP: $old_ip_externe
+Nouvelle IP: $ip_externe
+
+__EOF
+}
+
+
+dotenv
+
+old_ip_externe=$(cat monitor-ip.pref)
+
+ip_externe=$(dig @resolver4.opendns.com myip.opendns.com +short)
+echo $ip_externe > ip-monitor.pref
+
+if [ "$ip_externe" != "$old_ip_externe" ]; then
+#if [ "$ip_externe" == "$old_ip_externe" ]; then
+    echo "L'IP externe a changé"
+    echo "IP externe: $ip_externe"
+    
+	#msmtp -d -t < email_monitor_ip.txt
+	send_notification
+
+	#echo -e "Sending notification to $gotify_server ..."
+	#TITLE="IP has changed on $host"
+	#MESSAGE="**A new version of Pi-hole is available:**\n\n $msg\n\n $infos\n\n Please run *pihole -up* on $host to update !"
+	#PRIORITY=8
+	#URL="$gotify_server/message?token=$token&?format=markdown"
+	#URL="$gotify_server/message?token=$token"
+
+	# --output /dev/null 
+	#curl --with-ca-bundle /opt/etc/ssl/cert.pem -L -S -v --data '{"message": "'"${MESSAGE}"'", "title": "'"${TITLE}"'", "priority":'"${PRIORITY}"', "extras": {"client::display": {"contentType": "text/markdown"}}}' -H 'Content-Type: application/json' "$URL"
+	#curl -k -L -S -v --data '{"message": "'"${MESSAGE}"'", "title": "'"${TITLE}"'", "priority":'"${PRIORITY}"', "extras": {"client::display": {"contentType": "text/markdown"}}}' -H 'Content-Type: application/json' "$URL"
+
+	#wget "https://gotify.photos-nas.ovh/message?token=$token" --ca-certificate=/usr/syno/etc/certificate/_archive/mqkgNA/chain.pem --no-check-certificate --post-data "title=$TITLE&message=$MESSAGE&priority=$PRIORITY" -O /dev/null
+	
+else
+    echo "L'IP externe n'a pas changé"
+    echo "IP externe: $ip_externe"
+fi