40 lines
811 B
Go
40 lines
811 B
Go
// Copyright (C) 2015 The Syncthing Authors.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
|
|
package osutil
|
|
|
|
import (
|
|
"net"
|
|
)
|
|
|
|
func GetLans() ([]*net.IPNet, error) {
|
|
ifs, err := net.Interfaces()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
addrs := []net.Addr{}
|
|
for _, currentIf := range ifs {
|
|
if currentIf.Flags&net.FlagUp != net.FlagUp {
|
|
continue
|
|
}
|
|
currentAddrs, err := currentIf.Addrs()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
addrs = append(addrs, currentAddrs...)
|
|
}
|
|
|
|
nets := make([]*net.IPNet, 0, len(addrs))
|
|
|
|
for _, addr := range addrs {
|
|
net, ok := addr.(*net.IPNet)
|
|
if ok {
|
|
nets = append(nets, net)
|
|
}
|
|
}
|
|
return nets, nil
|
|
}
|