From a592649ae12e5f42c824d607ad223d2847ff4aea Mon Sep 17 00:00:00 2001
From: Yousong Zhou <zhouyousong@yunionyun.com>
Date: Tue, 31 Dec 2019 10:00:26 +0800
Subject: [PATCH] =?UTF-8?q?guestnetworks:=20=E5=8A=A0=E5=BC=BAifname?=
 =?UTF-8?q?=E5=86=85=E5=AE=B9=E5=88=A4=E6=96=AD?=
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---
 pkg/compute/models/guestnetworks.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/pkg/compute/models/guestnetworks.go b/pkg/compute/models/guestnetworks.go
index d56fb9562f..c18c0ee961 100644
--- a/pkg/compute/models/guestnetworks.go
+++ b/pkg/compute/models/guestnetworks.go
@@ -257,6 +257,23 @@ func (man *SGuestnetworkManager) ifnameUsed(ifname string) bool {
 	if ifname == "" {
 		return true
 	}
+	if len(ifname) > MAX_IFNAME_SIZE {
+		return true
+	}
+	isa := func(c byte) bool {
+		return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
+	}
+	if !isa(ifname[0]) {
+		return true
+	}
+	for i := range ifname[1:] {
+		c := ifname[i]
+		if isa(c) || c >= '0' || c <= '9' || c == '_' || c == '-' {
+			continue
+		}
+		return true
+	}
+
 	count, err := GuestnetworkManager.Query().Equals("ifname", ifname).CountWithError()
 	if err != nil {
 		panic(errors.Wrap(err, "query if ifname is used"))