53 lines
1.0 KiB
Go
53 lines
1.0 KiB
Go
// Copyright (C) 2015 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package osutil
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import (
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"net"
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)
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func GetLans() ([]*net.IPNet, error) {
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ifs, err := net.Interfaces()
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if err != nil {
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return nil, err
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}
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var addrs []net.Addr
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for _, currentIf := range ifs {
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if currentIf.Flags&net.FlagRunning == 0 {
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continue
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}
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currentAddrs, err := currentIf.Addrs()
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if err != nil {
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return nil, err
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}
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addrs = append(addrs, currentAddrs...)
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}
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nets := make([]*net.IPNet, 0, len(addrs))
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for _, addr := range addrs {
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net, ok := addr.(*net.IPNet)
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if ok {
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nets = append(nets, net)
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}
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}
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return nets, nil
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}
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func IPFromAddr(addr net.Addr) (net.IP, error) {
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switch a := addr.(type) {
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case *net.TCPAddr:
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return a.IP, nil
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case *net.UDPAddr:
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return a.IP, nil
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default:
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host, _, err := net.SplitHostPort(addr.String())
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return net.ParseIP(host), err
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}
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}
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