From 2f8f5a76cf2e0e1cd9be03785618c627b4619667 Mon Sep 17 00:00:00 2001
From: Mohit Mehta <mohit.mehta@vyatta.com>
Date: Wed, 26 Nov 2008 16:45:16 -0800
Subject: Fix Bug 3887 Generate a warning message when NAT
 inbound/outbound-interface does not match a configured interface

---
 .../service/nat/rule/node.tag/inbound-interface/node.def     | 12 ++++++++++++
 .../service/nat/rule/node.tag/outbound-interface/node.def    | 12 ++++++++++++
 2 files changed, 24 insertions(+)

(limited to 'templates-cfg/service')

diff --git a/templates-cfg/service/nat/rule/node.tag/inbound-interface/node.def b/templates-cfg/service/nat/rule/node.tag/inbound-interface/node.def
index b9cd4ee..ffd4d5a 100644
--- a/templates-cfg/service/nat/rule/node.tag/inbound-interface/node.def
+++ b/templates-cfg/service/nat/rule/node.tag/inbound-interface/node.def
@@ -2,3 +2,15 @@ type:  txt
 help: Set inbound interface of NAT traffic
 allowed: ls /sys/class/net 2>/dev/null
 comp_help:Enter a network interface name, for example, "eth0"
+commit:expression: exec "
+        intf_array=($(awk '$1 ~ /:/ { print $1 }' /proc/net/dev))
+        intf_array_len=${#intf_array[*]}
+        i=0
+        while [ $i -lt $intf_array_len ]; do
+             temp=${intf_array[$i]%:*}
+             if [ \"$temp\" == \"$VAR(@)\" ] ; then
+                   exit 0
+             fi
+             let i++
+        done
+        echo NAT configuration warning: interface $VAR(@) does not exist on this system "
diff --git a/templates-cfg/service/nat/rule/node.tag/outbound-interface/node.def b/templates-cfg/service/nat/rule/node.tag/outbound-interface/node.def
index a9b0b4e..1bfe558 100644
--- a/templates-cfg/service/nat/rule/node.tag/outbound-interface/node.def
+++ b/templates-cfg/service/nat/rule/node.tag/outbound-interface/node.def
@@ -2,3 +2,15 @@ type:  txt
 help: Set outbound interface for NAT traffic
 allowed: ls /sys/class/net 2>/dev/null
 comp_help:Enter a network interface name, for example, "eth0"
+commit:expression: exec "
+        intf_array=($(awk '$1 ~ /:/ { print $1 }' /proc/net/dev))
+        intf_array_len=${#intf_array[*]}
+        i=0
+        while [ $i -lt $intf_array_len ]; do
+             temp=${intf_array[$i]%:*}
+             if [ \"$temp\" == \"$VAR(@)\" ] ; then
+                   exit 0
+             fi
+             let i++
+        done
+        echo NAT configuration warning: interface $VAR(@) does not exist on this system "
-- 
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