63 lines
995 B
Go
63 lines
995 B
Go
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package server
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import (
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"errors"
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"log"
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"net"
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)
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// github.com/insomniacslk/dhcp
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type Config struct {
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Device string `yaml:"device"`
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}
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type Server struct {
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addrs []net.IP
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l net.Listener
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}
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func addrsForDevice(dev string) ([]net.IP, error) {
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netInterface, err := net.InterfaceByName(dev)
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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.IP
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devAddrs, err := netInterface.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 devAddrs {
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ip := net.ParseIP(addr.String())
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if ip == nil {
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continue // address isn't an IP address
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}
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// DHCP should only listen on private addresses.
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if !ip.IsPrivate() {
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continue
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}
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// only support IPv4 for now
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if len(ip) != 4 {
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continue
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}
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addrs = append(addrs, ip)
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}
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return addrs, nil
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}
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func NewServer(cfg *Config) (*Server, error) {
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addrs, err := addrsForDevice(cfg.Device)
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if err != nil {
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return nil, err
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}
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log.Println("server IP list: ", addrs)
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return nil, errors.New("not implemented")
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}
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