func confRead() map[govpn.PeerId]*govpn.PeerConf {
data, err := ioutil.ReadFile(*confPath)
if err != nil {
log.Fatalln("Unable to read configuration:", err)
}
confsRaw := new(map[string]govpn.PeerConf)
err = json.Unmarshal(data, confsRaw)
if err != nil {
log.Fatalln("Unable to parse configuration:", err)
}
confs := make(map[govpn.PeerId]*govpn.PeerConf, len(*confsRaw))
for name, pc := range *confsRaw {
verifier, err := govpn.VerifierFromString(pc.VerifierRaw)
if err != nil {
log.Fatalln("Unable to decode the key:", err.Error(), pc.VerifierRaw)
}
conf := govpn.PeerConf{
Verifier: verifier,
Id: verifier.Id,
Name: name,
Up: pc.Up,
Down: pc.Down,
Noise: pc.Noise,
CPR: pc.CPR,
}
if pc.TimeoutInt <= 0 {
pc.TimeoutInt = govpn.TimeoutDefault
}
conf.Timeout = time.Second * time.Duration(pc.TimeoutInt)
confs[*verifier.Id] = &conf
}
return confs
}
func main() {
flag.Parse()
timeout = *timeoutP
var err error
log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)
govpn.MTU = *mtu
if *egdPath != "" {
log.Println("Using", *egdPath, "EGD")
govpn.EGDInit(*egdPath)
}
verifier, err := govpn.VerifierFromString(*verifierRaw)
if err != nil {
log.Fatalln(err)
}
priv := verifier.PasswordApply(govpn.StringFromFile(*keyPath))
conf = &govpn.PeerConf{
Id: verifier.Id,
Timeout: time.Second * time.Duration(timeout),
Noise: *noisy,
CPR: *cpr,
Verifier: verifier,
DSAPriv: priv,
}
idsCache = govpn.NewCipherCache([]govpn.PeerId{*verifier.Id})
log.Println(govpn.VersionGet())
tap, err = govpn.TAPListen(*ifaceName)
if err != nil {
log.Fatalln("Can not listen on TAP interface:", err)
}
log.Println("Max MTU on TAP interface:", govpn.TAPMaxMTU())
if *stats != "" {
log.Println("Stats are going to listen on", *stats)
statsPort, err := net.Listen("tcp", *stats)
if err != nil {
log.Fatalln("Can not listen on stats port:", err)
}
go govpn.StatsProcessor(statsPort, &knownPeers)
}
termSignal := make(chan os.Signal, 1)
signal.Notify(termSignal, os.Interrupt, os.Kill)
MainCycle:
for {
timeouted := make(chan struct{})
rehandshaking := make(chan struct{})
termination := make(chan struct{})
if *proxyAddr != "" {
*proto = "tcp"
}
switch *proto {
case "udp":
go startUDP(timeouted, rehandshaking, termination)
case "tcp":
if *proxyAddr != "" {
go proxyTCP(timeouted, rehandshaking, termination)
} else {
go startTCP(timeouted, rehandshaking, termination)
}
default:
log.Fatalln("Unknown protocol specified")
}
select {
case <-termSignal:
log.Fatalln("Finishing")
termination <- struct{}{}
break MainCycle
case <-timeouted:
break MainCycle
case <-rehandshaking:
}
close(timeouted)
close(rehandshaking)
close(termination)
}
govpn.ScriptCall(*downPath, *ifaceName)
}