From 46e308c20e050e6ec1163f72c00226d5412ba1af Mon Sep 17 00:00:00 2001
From: lazedo <luis.azedo@factorlusitano.com>
Date: Mon, 15 Apr 2019 13:47:51 +0000
Subject: [PATCH] check if result of iproute is ip address

---
 system/sbin/kazoo-kamailio | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/system/sbin/kazoo-kamailio b/system/sbin/kazoo-kamailio
index ff533a9..63b2a66 100755
--- a/system/sbin/kazoo-kamailio
+++ b/system/sbin/kazoo-kamailio
@@ -12,6 +12,24 @@ if [ -f /etc/kazoo/kamailio/options ]; then
     . /etc/kazoo/kamailio/options
 fi
 
+is_ipaddress ()
+{
+if [ $(echo $1 | grep -o '\.' | wc -l) -ne 3 ]; then
+        return 1
+elif [ $(echo $1 | tr '.' ' ' | wc -w) -ne 4 ]; then
+        return 1
+else
+        for OCTET in $(echo $1 | tr '.' ' '); do
+                if ! [[ $OCTET =~ ^[0-9]+$ ]]; then
+                        return 1
+                elif [[ $OCTET -lt 0 || $OCTET -gt 255 ]]; then
+                        return 1
+                fi
+        done
+fi
+return 0
+}
+
 RETVAL=1
 USER=${KAMAILIO_USER:-kamailio}
 GROUP=${KAMAILIO_GROUP:-daemon}
@@ -29,7 +47,7 @@ RAM_DISK_ENABLED=${RAM_DISK_ENABLED:-false}
 EXTRA_OPTIONS=${EXTRA_OPTIONS:-"-x tlsf -w /tmp"}
 
 MY_LOCAL_IP=$(ip route get 8.8.8.8 2> /dev/null | awk '{print ""$NF""; exit}')
-if [[ ! -z ${MY_LOCAL_IP} ]]; then
+if is_ipaddress ${MY_LOCAL_IP}; then
    EXTRA_OPTIONS+=" -A MY_LOCAL_IP=${MY_LOCAL_IP}"
 fi