mirror of
https://github.com/yggdrasil-network/yggdrasil-go.git
synced 2024-12-20 15:07:31 +00:00
307 lines
8.0 KiB
Go
307 lines
8.0 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"crypto/ed25519"
|
|
"encoding/hex"
|
|
"encoding/json"
|
|
"flag"
|
|
"fmt"
|
|
"net"
|
|
"os"
|
|
"os/signal"
|
|
"regexp"
|
|
"strings"
|
|
"syscall"
|
|
|
|
"github.com/gologme/log"
|
|
gsyslog "github.com/hashicorp/go-syslog"
|
|
"github.com/hjson/hjson-go/v4"
|
|
"github.com/kardianos/minwinsvc"
|
|
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/address"
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/admin"
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/config"
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/ipv6rwc"
|
|
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/core"
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/multicast"
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/tun"
|
|
"github.com/yggdrasil-network/yggdrasil-go/src/version"
|
|
)
|
|
|
|
type node struct {
|
|
core *core.Core
|
|
tun *tun.TunAdapter
|
|
multicast *multicast.Multicast
|
|
admin *admin.AdminSocket
|
|
}
|
|
|
|
// The main function is responsible for configuring and starting Yggdrasil.
|
|
func main() {
|
|
genconf := flag.Bool("genconf", false, "print a new config to stdout")
|
|
useconf := flag.Bool("useconf", false, "read HJSON/JSON config from stdin")
|
|
useconffile := flag.String("useconffile", "", "read HJSON/JSON config from specified file path")
|
|
normaliseconf := flag.Bool("normaliseconf", false, "use in combination with either -useconf or -useconffile, outputs your configuration normalised")
|
|
exportkey := flag.Bool("exportkey", false, "use in combination with either -useconf or -useconffile, outputs your private key in PEM format")
|
|
confjson := flag.Bool("json", false, "print configuration from -genconf or -normaliseconf as JSON instead of HJSON")
|
|
autoconf := flag.Bool("autoconf", false, "automatic mode (dynamic IP, peer with IPv6 neighbors)")
|
|
ver := flag.Bool("version", false, "prints the version of this build")
|
|
logto := flag.String("logto", "stdout", "file path to log to, \"syslog\" or \"stdout\"")
|
|
getaddr := flag.Bool("address", false, "use in combination with either -useconf or -useconffile, outputs your IPv6 address")
|
|
getsnet := flag.Bool("subnet", false, "use in combination with either -useconf or -useconffile, outputs your IPv6 subnet")
|
|
getpkey := flag.Bool("publickey", false, "use in combination with either -useconf or -useconffile, outputs your public key")
|
|
loglevel := flag.String("loglevel", "info", "loglevel to enable")
|
|
flag.Parse()
|
|
|
|
// Catch interrupts from the operating system to exit gracefully.
|
|
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
|
|
|
|
// Capture the service being stopped on Windows.
|
|
minwinsvc.SetOnExit(cancel)
|
|
|
|
// Create a new logger that logs output to stdout.
|
|
var logger *log.Logger
|
|
switch *logto {
|
|
case "stdout":
|
|
logger = log.New(os.Stdout, "", log.Flags())
|
|
|
|
case "syslog":
|
|
if syslogger, err := gsyslog.NewLogger(gsyslog.LOG_NOTICE, "DAEMON", version.BuildName()); err == nil {
|
|
logger = log.New(syslogger, "", log.Flags()&^(log.Ldate|log.Ltime))
|
|
}
|
|
|
|
default:
|
|
if logfd, err := os.OpenFile(*logto, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644); err == nil {
|
|
logger = log.New(logfd, "", log.Flags())
|
|
}
|
|
}
|
|
if logger == nil {
|
|
logger = log.New(os.Stdout, "", log.Flags())
|
|
logger.Warnln("Logging defaulting to stdout")
|
|
}
|
|
if *normaliseconf {
|
|
setLogLevel("error", logger)
|
|
} else {
|
|
setLogLevel(*loglevel, logger)
|
|
}
|
|
|
|
cfg := config.GenerateConfig()
|
|
var err error
|
|
switch {
|
|
case *ver:
|
|
fmt.Println("Build name:", version.BuildName())
|
|
fmt.Println("Build version:", version.BuildVersion())
|
|
return
|
|
|
|
case *autoconf:
|
|
// Use an autoconf-generated config, this will give us random keys and
|
|
// port numbers, and will use an automatically selected TUN interface.
|
|
|
|
case *useconf:
|
|
if _, err := cfg.ReadFrom(os.Stdin); err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
case *useconffile != "":
|
|
f, err := os.Open(*useconffile)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if _, err := cfg.ReadFrom(f); err != nil {
|
|
panic(err)
|
|
}
|
|
_ = f.Close()
|
|
|
|
case *genconf:
|
|
cfg.AdminListen = ""
|
|
var bs []byte
|
|
if *confjson {
|
|
bs, err = json.MarshalIndent(cfg, "", " ")
|
|
} else {
|
|
bs, err = hjson.Marshal(cfg)
|
|
}
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Println(string(bs))
|
|
return
|
|
|
|
default:
|
|
fmt.Println("Usage:")
|
|
flag.PrintDefaults()
|
|
|
|
if *getaddr || *getsnet {
|
|
fmt.Println("\nError: You need to specify some config data using -useconf or -useconffile.")
|
|
}
|
|
return
|
|
}
|
|
|
|
privateKey := ed25519.PrivateKey(cfg.PrivateKey)
|
|
publicKey := privateKey.Public().(ed25519.PublicKey)
|
|
|
|
switch {
|
|
case *getaddr:
|
|
addr := address.AddrForKey(publicKey)
|
|
ip := net.IP(addr[:])
|
|
fmt.Println(ip.String())
|
|
return
|
|
|
|
case *getsnet:
|
|
snet := address.SubnetForKey(publicKey)
|
|
ipnet := net.IPNet{
|
|
IP: append(snet[:], 0, 0, 0, 0, 0, 0, 0, 0),
|
|
Mask: net.CIDRMask(len(snet)*8, 128),
|
|
}
|
|
fmt.Println(ipnet.String())
|
|
return
|
|
|
|
case *getpkey:
|
|
fmt.Println(hex.EncodeToString(publicKey))
|
|
return
|
|
|
|
case *normaliseconf:
|
|
cfg.AdminListen = ""
|
|
var bs []byte
|
|
if *confjson {
|
|
bs, err = json.MarshalIndent(cfg, "", " ")
|
|
} else {
|
|
bs, err = hjson.Marshal(cfg)
|
|
}
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Println(string(bs))
|
|
return
|
|
|
|
case *exportkey:
|
|
pem, err := cfg.MarshalPEMPrivateKey()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Println(string(pem))
|
|
return
|
|
}
|
|
|
|
n := &node{}
|
|
|
|
// Setup the Yggdrasil node itself.
|
|
{
|
|
options := []core.SetupOption{
|
|
core.NodeInfo(cfg.NodeInfo),
|
|
core.NodeInfoPrivacy(cfg.NodeInfoPrivacy),
|
|
}
|
|
for _, addr := range cfg.Listen {
|
|
options = append(options, core.ListenAddress(addr))
|
|
}
|
|
for _, peer := range cfg.Peers {
|
|
options = append(options, core.Peer{URI: peer})
|
|
}
|
|
for intf, peers := range cfg.InterfacePeers {
|
|
for _, peer := range peers {
|
|
options = append(options, core.Peer{URI: peer, SourceInterface: intf})
|
|
}
|
|
}
|
|
for _, allowed := range cfg.AllowedPublicKeys {
|
|
k, err := hex.DecodeString(allowed)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
options = append(options, core.AllowedPublicKey(k[:]))
|
|
}
|
|
if n.core, err = core.New(cfg.Certificate, logger, options...); err != nil {
|
|
panic(err)
|
|
}
|
|
address, subnet := n.core.Address(), n.core.Subnet()
|
|
logger.Infof("Your public key is %s", hex.EncodeToString(n.core.PublicKey()))
|
|
logger.Infof("Your IPv6 address is %s", address.String())
|
|
logger.Infof("Your IPv6 subnet is %s", subnet.String())
|
|
}
|
|
|
|
// Setup the admin socket.
|
|
{
|
|
options := []admin.SetupOption{
|
|
admin.ListenAddress(cfg.AdminListen),
|
|
}
|
|
if cfg.LogLookups {
|
|
options = append(options, admin.LogLookups{})
|
|
}
|
|
if n.admin, err = admin.New(n.core, logger, options...); err != nil {
|
|
panic(err)
|
|
}
|
|
if n.admin != nil {
|
|
n.admin.SetupAdminHandlers()
|
|
}
|
|
}
|
|
|
|
// Setup the multicast module.
|
|
{
|
|
options := []multicast.SetupOption{}
|
|
for _, intf := range cfg.MulticastInterfaces {
|
|
options = append(options, multicast.MulticastInterface{
|
|
Regex: regexp.MustCompile(intf.Regex),
|
|
Beacon: intf.Beacon,
|
|
Listen: intf.Listen,
|
|
Port: intf.Port,
|
|
Priority: uint8(intf.Priority),
|
|
Password: intf.Password,
|
|
})
|
|
}
|
|
if n.multicast, err = multicast.New(n.core, logger, options...); err != nil {
|
|
panic(err)
|
|
}
|
|
if n.admin != nil && n.multicast != nil {
|
|
n.multicast.SetupAdminHandlers(n.admin)
|
|
}
|
|
}
|
|
|
|
// Setup the TUN module.
|
|
{
|
|
options := []tun.SetupOption{
|
|
tun.InterfaceName(cfg.IfName),
|
|
tun.InterfaceMTU(cfg.IfMTU),
|
|
}
|
|
if n.tun, err = tun.New(ipv6rwc.NewReadWriteCloser(n.core), logger, options...); err != nil {
|
|
panic(err)
|
|
}
|
|
if n.admin != nil && n.tun != nil {
|
|
n.tun.SetupAdminHandlers(n.admin)
|
|
}
|
|
}
|
|
|
|
// Block until we are told to shut down.
|
|
<-ctx.Done()
|
|
|
|
// Shut down the node.
|
|
_ = n.admin.Stop()
|
|
_ = n.multicast.Stop()
|
|
_ = n.tun.Stop()
|
|
n.core.Stop()
|
|
}
|
|
|
|
func setLogLevel(loglevel string, logger *log.Logger) {
|
|
levels := [...]string{"error", "warn", "info", "debug", "trace"}
|
|
loglevel = strings.ToLower(loglevel)
|
|
|
|
contains := func() bool {
|
|
for _, l := range levels {
|
|
if l == loglevel {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
if !contains() { // set default log level
|
|
logger.Infoln("Loglevel parse failed. Set default level(info)")
|
|
loglevel = "info"
|
|
}
|
|
|
|
for _, l := range levels {
|
|
logger.EnableLevel(l)
|
|
if l == loglevel {
|
|
break
|
|
}
|
|
}
|
|
}
|