From d1f63951a35159a4cc659a4119482f7882a48c76 Mon Sep 17 00:00:00 2001
From: Mohit Mehta <mohit.mehta@vyatta.com>
Date: Thu, 11 Sep 2008 09:20:18 -0700
Subject: preserve system name-servers order in /etc/resolv.conf as configured
 in CLI

---
 templates/system/name-server/node.def | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

(limited to 'templates/system/name-server/node.def')

diff --git a/templates/system/name-server/node.def b/templates/system/name-server/node.def
index fce5cac9..d2ce0c30 100644
--- a/templates/system/name-server/node.def
+++ b/templates/system/name-server/node.def
@@ -1,20 +1,31 @@
 multi:
 type: ipv4
 help: Set Domain Name Server (DNS)
-update: sudo sh -c "touch /etc/resolv.conf &&
-if grep -q \"$VAR(@)\($\|[[:space:]]\)\" /etc/resolv.conf; then
-  exit 0;
+update: touch /etc/resolv.conf
+if grep -q "$VAR(@)\($\|[[:space:]]\)" /etc/resolv.conf; then
+  exit 0
 else
-  mv -f /etc/resolv.conf /etc/old_resolv.conf &&
-  echo \"nameserver      $VAR(@)\" >> /etc/resolv.conf &&
-  cat /etc/old_resolv.conf >>  /etc/resolv.conf;
+  cli_ns_array=($(awk '{if (!$3) print $2}' /etc/resolv.conf))
+  cli_ns_array_len=${#cli_ns_array[*]}
+  line_num=0
+  if [ $cli_ns_array_len -gt 0 ]; then
+     grepped_ns_line=`grep "${cli_ns_array[$cli_ns_array_len-1]}$" -n /etc/resolv.conf`
+     echo ${grepped_ns_line%%:*} > /etc/resolv_tmp.conf
+     line_num=`cat /etc/resolv_tmp.conf`
+  fi
+     head -$line_num /etc/resolv.conf > /etc/resolv_tmp.conf
+     echo "nameserver      $VAR(@)" >> /etc/resolv_tmp.conf
+     total_lines=`cat /etc/resolv.conf | wc -l`
+     rest_lines=`expr $total_lines - $line_num`
+     tail -$rest_lines /etc/resolv.conf >> /etc/resolv_tmp.conf
+     mv -f /etc/resolv_tmp.conf /etc/resolv.conf
 fi &&
 if [ -d /opt/vyatta/config/active/service/dns/forwarding ]; then
-   /opt/vyatta/sbin/vyatta-dns-forwarding.pl --update-dnsforwarding >&/dev/null;
+   /opt/vyatta/sbin/vyatta-dns-forwarding.pl --update-dnsforwarding >&/dev/null
 fi &&
 if [ -f /etc/ntp.conf ] && grep -q 'server' /etc/ntp.conf; then
-  /usr/sbin/invoke-rc.d ntp restart >&/dev/null;
-fi"
+  /usr/sbin/invoke-rc.d ntp restart >&/dev/null
+fi
 delete:expression: "sudo sh -c \"touch /etc/resolv.conf && \
 sed -i '/$VAR(@)$/d' /etc/resolv.conf && \
 if [ -f /etc/ntp.conf ] && grep -q 'server' /etc/ntp.conf; then \
-- 
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