57 lines
1.1 KiB
Go
57 lines
1.1 KiB
Go
package utils
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import (
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"errors"
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"fmt"
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"net"
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"strings"
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)
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// NetworkLister List all network interface available
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func NetworkLister() {
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// Retrieve Interfaces
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inter, err := net.Interfaces()
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// Process errors
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if err != nil {
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println("[ERROR] An error occurred : " + err.Error())
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return
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}
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// Display items
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println("\n\nNetwork interface list :")
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for i, val := range inter {
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fmt.Printf("%d. %s\n", i, val.Name)
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addrs, _ := val.Addrs()
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for _, addr := range addrs {
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println("-- ", addr.String())
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}
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}
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print("\n")
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}
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// RetrieveIPv4FromInterface Retrieve the first IPv4 from an interface.
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func RetrieveIPv4FromInterface(inter string) (net.IP, error) {
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ief, err := net.InterfaceByName(inter)
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addrs, err := ief.Addrs()
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if err != nil {
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return nil, err
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}
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for _, addr := range addrs {
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switch v := addr.(type) {
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case *net.IPNet:
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//if !v.IP.IsLoopback() {
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if v.IP.To4() != nil { //Verify if IP is IPV4
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return v.IP, nil
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}
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//}
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}
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}
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return nil, errors.New("no IPv4 found")
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}
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// IsIPv4 Check if the ip is a v4 or v6 ip
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func IsIPv4(addr string) bool {
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return strings.Count(addr, ":") < 2
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}
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