blob: 54c0a2ca395f069111c4e0b389bcf0ab6141b092 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package util
import (
"net"
)
// IsIPPrivate for net.IP.IsPrivate. TODO: replace with `ip.IsPrivate()` if min go version is bumped to 1.17
func IsIPPrivate(ip net.IP) bool {
if ip4 := ip.To4(); ip4 != nil {
return ip4[0] == 10 ||
(ip4[0] == 172 && ip4[1]&0xf0 == 16) ||
(ip4[0] == 192 && ip4[1] == 168)
}
return len(ip) == net.IPv6len && ip[0]&0xfe == 0xfc
}
|
