Created
December 21, 2019 00:11
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OUI to Vendor Name Map
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package main | |
import ( | |
"bufio" | |
"fmt" | |
"os" | |
"strings" | |
) | |
// OUI Map | |
// Download oui.txt from | |
// http://standards-oui.ieee.org/oui/oui.txt | |
// OUIMap : OUI to Name Map | |
type OUIMap struct { | |
Map map[string]string | |
} | |
// Open : Load OUI Data from file | |
func (oui *OUIMap) Open(path string) error { | |
f, err := os.Open(path) | |
if err != nil { | |
return err | |
} | |
defer f.Close() | |
oui.Map = make(map[string]string) | |
s := bufio.NewScanner(f) | |
for s.Scan() { | |
l := strings.TrimSpace(s.Text()) | |
if len(l) < 1 { | |
continue | |
} | |
f := strings.Fields(l) | |
if len(f) < 4 || f[1] != "(base" { | |
continue | |
} | |
oui.Map[f[0]] = strings.Join(f[3:], " ") | |
} | |
return nil | |
} | |
// Find : Find Vendor Name from MAC Address | |
func (oui *OUIMap) Find(mac string) string { | |
mac = strings.TrimSpace(mac) | |
mac = strings.ReplaceAll(mac, ":", "") | |
mac = strings.ReplaceAll(mac, "-", "") | |
if len(mac) > 6 { | |
mac = strings.ToUpper(mac) | |
if n, ok := oui.Map[mac[:6]]; ok { | |
return n | |
} | |
} | |
return "Unknown" | |
} | |
func main() { | |
oui := &OUIMap{} | |
if err := oui.Open("oui.txt"); err != nil { | |
panic(err) | |
} | |
for id, name := range oui.Map { | |
fmt.Printf("%s=%s\n", id, name) | |
} | |
test := []string{"48-D7-05-B8-FF-5F", "4C-56-9D-00-CF-D9", "70:1C:e7:2F:9F:3B"} | |
for _, m := range test { | |
fmt.Printf("%s=%s\n", m, oui.Find(m)) | |
} | |
} |
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IEEEに登録されたMACアドレスのOUI(ベンダーコード)とベンダー名をGO言語のMapにするサンプルです。
ouiのデータは、
http://standards-oui.ieee.org/oui/oui.txt
からダウンロードできます。
サンプルのように、MACアドレスからベンダー名を検索することに利用できます。