From bde4cc67d29212f70cd9fa82de94c45b4fac2f44 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Sun, 25 Jun 2023 10:57:45 +0200
Subject: [PATCH] test_email.sh: add public IP-Adresse if router is behind an
 other internet router.

---
 test_email.sh | 39 ++++++++++++++++++++++++++++++++++-----
 1 file changed, 34 insertions(+), 5 deletions(-)

diff --git a/test_email.sh b/test_email.sh
index 353c623..fbfbf4f 100755
--- a/test_email.sh
+++ b/test_email.sh
@@ -17,6 +17,30 @@ if [[  -n "$INET_INTERFACE" ]] ; then
    EXTERN_IPv6="$(ip addr show $INET_INTERFACE | grep global | grep -E "\s+inet6\s+" | awk '{print$2}')"
 fi
 
+if [[ -n "${EXTERN_IPv4}" ]] ; then
+   if [[ "${EXTERN_IPv4}" =~ ^10\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^172\.16\. ]] \
+      || [[ "${EXTERN_IPv4}" =~ ^192\.168\. ]] ; then
+      
+      PUBLIC_IPv4="$(wget -qO- https://meine-ip.oopen.de 2> /dev/null)"
+   fi
+fi
+
 
 DNS_SERVER="$(cat /etc/resolv.conf | grep -v -e"^#" | grep nameserver | cut -d " " -f2)"
 DEFAULT_GW="$(netstat -rn | grep -e"^0.0.0" | awk '{print$2}')"
@@ -35,9 +59,9 @@ if [[ -n "$INET_INTERFACE" ]] ; then
    declare -i i=1
    for ip in $EXTERN_IPv4 ; do
       if [ $i -eq 1 ]; then 
-         echo -e "\tLocal IPv4 address...........: $ip" >> $file
+         echo -e "\t   Local IPv4 address...........: $ip" >> $file
       else
-         echo -e "\t                               $ip" >> $file
+         echo -e "\t                                  $ip" >> $file
       fi
       let i++
    done
@@ -45,17 +69,22 @@ if [[ -n "$INET_INTERFACE" ]] ; then
    for ip in $EXTERN_IPv6 ; do
       if [ $i -eq 1 ]; then
          echo "" >> $file
-         echo -e "\tLocal IPv6 address...........: $ip" >> $file
+         echo -e "\t   Local IPv6 address...........: $ip" >> $file
       else
-         echo -e "\t                               $ip" >> $file
+         echo -e "\t                                  $ip" >> $file
       fi
       let i++
    done
 fi
 echo "" >> $file
 if [ "$DEFAULT_GW" ] ; then
-   echo -e "\tDefault Gateway..............: $DEFAULT_GW" >> $file
+   echo -e "\t   Default Gateway..............: $DEFAULT_GW" >> $file
 fi
+if [[ -n "${PUBLIC_IPv4}" ]] && [[ "${PUBLIC_IPv4}" != "${EXTERN_IPv4}" ]]; then
+   echo "" >> $file
+   echo -e "\t   öffentliche IPv4 address.....: ${PUBLIC_IPv4}" >> $file
+fi
+   
 echo "" >> $file
 declare -i i=1
 for dns in $DNS_SERVER ; do