- Improve VPN supervisor log,

- Add IP validation on refresh.

usr/local/lib/network.bash

@@ -60,6 +60,38 @@ fi
 
 
 
+#--------------------------------------------------------------------------------------------------------------------------
+# is_valid_ip
+#--------------------------------------------------------------------------------------------------------------------------
+
+is_valid_ip()
+{
+    local ip=$1
+    local regex='^([0-9]{1,3}\.){3}[0-9]{1,3}$'
+    
+
+    if [[ $ip =~ $regex ]]
+    then
+        IFS='.' read -r o1 o2 o3 o4 <<< "$ip"
+	
+        for octet in $o1 $o2 $o3 $o4
+	do
+            if (( octet < 0 || octet > 255 ))
+	    then
+                return 1
+            fi
+        done
+	
+        return 0
+    else
+        return 1
+    fi
+}
+
+
+
+
+
 #--------------------------------------------------------------------------------------------------------------------------
 # ip_to_num
 #--------------------------------------------------------------------------------------------------------------------------
@@ -746,7 +778,7 @@ network_table_set()
 
     
     tab_assign NETWORK_SRC_TAB "${src_id},Table" "${ts_table}"
-   
+    
 
     ${DEBUG} sed "/^NETWORK_SRC_CONFIG=\"/,/^\"/ { s/^\(${nts_ip//./\\.}[[:space:]]\+\([^\t ]\+[[:space:]]\+\)\{2\}\)[^[:space:]]\+/\1${nts_table}/ }" -i ${NETWORK_CONFIG_FILE}
 
@@ -775,14 +807,19 @@ network_dst_address_refresh()
     
     dst_ip_new=$( nc ${proxy_host} ${proxy_port})
 
-    if [[ "${dst_ip_old}" != "${dst_ip_new}" ]]
+    if is_valid_ip ${dst_ip_new}
     then
-        ${LOG} "Update ${dst_host_name}: Old: [${dst_ip_old}] New: [${dst_ip_new}]"
-        ${DEBUG} /usr/local/sbin/ip_host_update "${dst_host_name/.*}" "${dst_host_name#*.}" "${dst_ip_new}" 60
+	if [[ "${dst_ip_old}" != "${dst_ip_new}" ]]
+	then
+            ${LOG} "Update ${dst_host_name}: Old: [${dst_ip_old}] New: [${dst_ip_new}]"
+            ${DEBUG} /usr/local/sbin/ip_host_update "${dst_host_name/.*}" "${dst_host_name#*.}" "${dst_ip_new}" 60
 
-        tab_assign NETWORK_DST_TAB "${dst_id},IP" "${dst_ip_new}"
+            tab_assign NETWORK_DST_TAB "${dst_id},IP" "${dst_ip_new}"
+	else
+            ${LOG} "Skiping ${dst_host_name}: IP: [${dst_ip_old}]"
+	fi
     else
-        ${LOG} "Skiping ${dst_host_name}: IP: [${dst_ip_old}]"
+        ${LOG} "Skiping ${dst_host_name}: Invalid IP: [${dst_ip_new}]   Old IP[${dst_ip_old}]"
     fi
 }