From c2bb04d5efa1c7586500832e16524e13596dbe29 Mon Sep 17 00:00:00 2001
From: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>
Date: Wed, 18 May 2016 13:00:17 +0000
Subject: [PATCH] packet/bgp: add error handling in flowSpecIpProtoParser()

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>
---
 packet/bgp/bgp.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packet/bgp/bgp.go b/packet/bgp/bgp.go
index b0147a10..4fd0898e 100644
--- a/packet/bgp/bgp.go
+++ b/packet/bgp/bgp.go
@@ -2210,6 +2210,9 @@ func flowSpecIpProtoParser(rf RouteFamily, args []string) (FlowSpecComponentInte
 	protos := strings.Join(ss, "|")
 	exp := regexp.MustCompile(fmt.Sprintf("^%s (((%s) )*)(%s)$", FlowSpecNameMap[FLOW_SPEC_TYPE_IP_PROTO], protos, protos))
 	elems := exp.FindStringSubmatch(strings.Join(args, " "))
+	if len(elems) < 2 {
+		return nil, fmt.Errorf("invalid ip-proto format")
+	}
 	items := make([]*FlowSpecComponentItem, 0)
 	eq := 0x1
 	if elems[1] != "" {