mac.go

// Copyright (c) 2023-2024 Onur Cinar.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
// https://github.com/cinar/checker

package checker

import (
	"errors"
	"net"
	"reflect"
)

// tagMac is the tag of the checker.
const tagMac = "mac"

// ErrNotMac indicates that the given value is not an MAC address.
var ErrNotMac = errors.New("please enter a valid MAC address")

// IsMac checks if the given value is a valid an IEEE 802 MAC-48, EUI-48, EUI-64, or a 20-octet IP over InfiniBand link-layer address.
func IsMac(value string) error {
	_, err := net.ParseMAC(value)
	if err != nil {
		return ErrNotMac
	}

	return nil
}

// makeMac makes a checker function for the ip checker.
func makeMac(_ string) CheckFunc {
	return checkMac
}

// checkMac checks if the given value is a valid an IEEE 802 MAC-48, EUI-48, EUI-64, or a 20-octet IP over InfiniBand link-layer address.
func checkMac(value, _ reflect.Value) error {
	if value.Kind() != reflect.String {
		panic("string expected")
	}

	return IsMac(value.String())
}