From 74c0a215edc7dde1bd29b8f1f3f370958e26f811 Mon Sep 17 00:00:00 2001
From: mountain <mountain@action2quare.com>
Date: Thu, 22 Jun 2023 20:17:30 +0900
Subject: [PATCH] =?UTF-8?q?noauth=EC=9D=84=20=EB=95=8C=20=EC=82=AC?=
 =?UTF-8?q?=EC=84=A4=20IP=EB=8C=80=EC=97=AD=EB=A7=8C=20=ED=97=88=EC=9A=A9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 core/maingate.go | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/core/maingate.go b/core/maingate.go
index 4893a6f..0c565a8 100644
--- a/core/maingate.go
+++ b/core/maingate.go
@@ -430,6 +430,23 @@ func whitelistKey(email string) string {
 
 	return email
 }
+func isPrivateIP(ip net.IP) bool {
+	if ip[0] == 10 {
+		return true
+	}
+
+	if ip[0] == 172 {
+		if ip[1] >= 16 && ip[1] < 32 {
+			return true
+		}
+		return false
+	}
+
+	if ip[0] == 192 && ip[1] == 168 {
+		return true
+	}
+	return false
+}
 
 func (mg *Maingate) RegisterHandlers(ctx context.Context, serveMux *http.ServeMux, prefix string) error {
 	var allServices []*serviceDescription
@@ -443,7 +460,7 @@ func (mg *Maingate) RegisterHandlers(ctx context.Context, serveMux *http.ServeMu
 		ipaddr := "127.0.0.1"
 		for _, addr := range addrs {
 			if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
-				if ipnet.IP.To4() != nil {
+				if ipnet.IP.To4() != nil && ipnet.IP.IsPrivate() {
 					ipaddr = ipnet.IP.String()
 				}
 			}