diff options
Diffstat (limited to 'vendor/github.com/google/uuid/node_net.go')
-rw-r--r-- | vendor/github.com/google/uuid/node_net.go | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/vendor/github.com/google/uuid/node_net.go b/vendor/github.com/google/uuid/node_net.go new file mode 100644 index 0000000..0cbbcdd --- /dev/null +++ b/vendor/github.com/google/uuid/node_net.go | |||
@@ -0,0 +1,33 @@ | |||
1 | // Copyright 2017 Google Inc. All rights reserved. | ||
2 | // Use of this source code is governed by a BSD-style | ||
3 | // license that can be found in the LICENSE file. | ||
4 | |||
5 | // +build !js | ||
6 | |||
7 | package uuid | ||
8 | |||
9 | import "net" | ||
10 | |||
11 | var interfaces []net.Interface // cached list of interfaces | ||
12 | |||
13 | // getHardwareInterface returns the name and hardware address of interface name. | ||
14 | // If name is "" then the name and hardware address of one of the system's | ||
15 | // interfaces is returned. If no interfaces are found (name does not exist or | ||
16 | // there are no interfaces) then "", nil is returned. | ||
17 | // | ||
18 | // Only addresses of at least 6 bytes are returned. | ||
19 | func getHardwareInterface(name string) (string, []byte) { | ||
20 | if interfaces == nil { | ||
21 | var err error | ||
22 | interfaces, err = net.Interfaces() | ||
23 | if err != nil { | ||
24 | return "", nil | ||
25 | } | ||
26 | } | ||
27 | for _, ifs := range interfaces { | ||
28 | if len(ifs.HardwareAddr) >= 6 && (name == "" || name == ifs.Name) { | ||
29 | return ifs.Name, ifs.HardwareAddr | ||
30 | } | ||
31 | } | ||
32 | return "", nil | ||
33 | } | ||