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  }