github.com/kaydxh/golang@v0.0.131/go/net/mac.go (about) 1 /* 2 *Copyright (c) 2022, kaydxh 3 * 4 *Permission is hereby granted, free of charge, to any person obtaining a copy 5 *of this software and associated documentation files (the "Software"), to deal 6 *in the Software without restriction, including without limitation the rights 7 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 *copies of the Software, and to permit persons to whom the Software is 9 *furnished to do so, subject to the following conditions: 10 * 11 *The above copyright notice and this permission notice shall be included in all 12 *copies or substantial portions of the Software. 13 * 14 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 *SOFTWARE. 21 */ 22 package net 23 24 import ( 25 "fmt" 26 "net" 27 ) 28 29 func GetLocalFirstMac() (string, error) { 30 interfaces, err := net.Interfaces() 31 if err != nil { 32 return "", err 33 } 34 35 var macs []string 36 for _, netInterface := range interfaces { 37 mac := netInterface.HardwareAddr.String() 38 if len(mac) == 0 { 39 continue 40 } else { 41 macs = append(macs, mac) 42 } 43 } 44 if len(macs) == 0 { 45 return "", fmt.Errorf("no valid mac") 46 } 47 48 return macs[0], nil 49 } 50 51 func GetLocalMacs() ([]string, error) { 52 interfaces, err := net.Interfaces() 53 if err != nil { 54 return nil, err 55 } 56 57 var macs []string 58 for _, netInterface := range interfaces { 59 mac := netInterface.HardwareAddr.String() 60 if len(mac) == 0 { 61 continue 62 } else { 63 macs = append(macs, mac) 64 } 65 } 66 67 return macs, nil 68 }