From b2ce61dc221bacd459c26c8261c56b21368addd7 Mon Sep 17 00:00:00 2001
From: Bruno21 <bruno@clicclac.info>
Date: Fri, 23 Aug 2024 14:03:37 +0200
Subject: [PATCH] v 1.0 du 23-08-2024

-notification mail
-notification gotify (gotify.maboiteverte.fr)
-aide
---
 .gitignore    |  1 +
 monitor-ip.sh | 90 +++++++++++++++++++++++++++++++++++----------------
 2 files changed, 64 insertions(+), 27 deletions(-)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e43b0f9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.DS_Store
diff --git a/monitor-ip.sh b/monitor-ip.sh
index d594ff7..158271f 100644
--- a/monitor-ip.sh
+++ b/monitor-ip.sh
@@ -1,10 +1,41 @@
 #!/usr/bin/env bash
 
-#gotify_server="https://gotify.photos-nas.ovh"
+# monitor-ip.sh checks whether the external IP address has changed, and if so, sends a mail notification and Gotify.
+
 host=$(hostname)
-#available=false
-#msg=
-#infos=
+
+redbold="\033[1;31m"
+greenbold="\033[1;32m"
+green="\033[0;32m"
+yellow="\033[0;33m"
+yellowbold="\033[1;33m"
+bold="\033[1m"
+#bold_under="\033[1;4m"
+underline="\033[4m"
+reset="\033[0m"
+
+notif=true
+
+### Help Function:
+Help() {
+  echo "monitor-ip.sh checks whether the external IP address has changed,"
+  echo " and if so, sends a mail notification and Gotify."
+  echo
+  echo "Syntax:     monitor-ip.sh [OPTION]" 
+  echo "Example:    monitor-ip.sh -h display this help !"
+  echo
+  echo "Options:"
+  echo "-h     Print this Help."
+  echo "-n     Just check IP. Don't send notification'."
+}
+
+while getopts "hn" options; do
+  case "${options}" in
+  	n) notif=false ;;
+    h|*) Help ; exit 2 ;;
+  esac
+done
+shift "$((OPTIND-1))"
 
 MSMTP=$(which msmtp)
 SSMTP=$(which ssmtp)
@@ -17,6 +48,7 @@ else
 	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
 fi
 
+
 dotenv () {
   set -a
   # shellcheck disable=SC1091
@@ -24,15 +56,15 @@ dotenv () {
   set +a
 }
 
-send_notification() {
-FromHost=$(hostname)
+send_mail_notification() {
+	FromHost=$(hostname)
 
-# User variables:
-SendMailFrom="router@clicclac.info"
-SendMailTo="router@clicclac.info"
-SubjectTag="monitor_ip.sh"
+	# User variables:
+	SendMailFrom="router@clicclac.info"
+	SendMailTo="router@clicclac.info"
+	SubjectTag="monitor_ip.sh"
 
-printf "\nEnvoi d'une notification email ...\n"
+	printf "\nSending email notification  ...\n"
 
 $MAIL $SendMailTo << __EOF
 From: "$FromHost" <$SendMailFrom>
@@ -48,36 +80,40 @@ Nouvelle IP: $ip_externe
 __EOF
 }
 
+send_gotify_notification() {
+	now=$(date +"%d-%m-%Y %T")
+	gotify_server="https://gotify.maboiteverte.fr"
+	TITLE="IP has changed on $host"
+	MESSAGE="**L'IP externe a changé:**\n\n - ancienne IP: $old_ip_externe\n - **nouvelle IP:  $ip_externe**\n\n [^]: $now\n"
+	PRIORITY=8
+	URL="$gotify_server/message?token=$token_gotify&?format=markdown"
+	
+	echo -e "Sending notification to $gotify_server ..."
+	
+	curl -L -S -s --data '{"message": "'"${MESSAGE}"'", "title": "'"${TITLE}"'", "priority":'"${PRIORITY}"', "extras": {"client::display": {"contentType": "text/markdown"}}}' -H 'Content-Type: application/json' "$URL"  > /dev/null
+
+	[ $? -eq 0 ] && echo -e "${greenbold}Gotify notification sent successfully !${reset}" || echo -e "${redbold}error sending Gotify notification !${reset}"
+}
 
 dotenv
 
 old_ip_externe=$(cat monitor-ip.pref)
 
 ip_externe=$(dig @resolver4.opendns.com myip.opendns.com +short)
-echo $ip_externe > ip-monitor.pref
+echo $ip_externe > monitor-ip.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
+    if [ $notif == true ]; then
+		send_mail_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
+		send_gotify_notification
+	fi
 	
 else
     echo "L'IP externe n'a pas changé"
     echo "IP externe: $ip_externe"
+    
 fi