cwinfo/yggdrasil-go
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Tidy up a bit, make sure to copy the private key at startup

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This commit is contained in:
Neil Alexander 2022-09-03 12:34:29 +01:00
parent a7d06e048a
commit 9cdfd59476
2 changed files with 12 additions and 58 deletions
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56
cmd/yggdrasil/main.go
View File

@ -81,48 +81,6 @@ func readConfig(log *log.Logger, useconf bool, useconffile string, normaliseconf
if err := hjson.Unmarshal(conf, &dat); err != nil {
panic(err)
}
// Check if we have old field names
if _, ok := dat["TunnelRouting"]; ok {
log.Warnln("WARNING: Tunnel routing is no longer supported")
}
if old, ok := dat["SigningPrivateKey"]; ok {
log.Warnln("WARNING: The \"SigningPrivateKey\" configuration option has been renamed to \"PrivateKey\"")
if _, ok := dat["PrivateKey"]; !ok {
if privstr, err := hex.DecodeString(old.(string)); err == nil {
priv := ed25519.PrivateKey(privstr)
pub := priv.Public().(ed25519.PublicKey)
dat["PrivateKey"] = hex.EncodeToString(priv[:])
dat["PublicKey"] = hex.EncodeToString(pub[:])
} else {
log.Warnln("WARNING: The \"SigningPrivateKey\" configuration option contains an invalid value and will be ignored")
}
}
}
if oldmc, ok := dat["MulticastInterfaces"]; ok {
if oldmcvals, ok := oldmc.([]interface{}); ok {
var newmc []config.MulticastInterfaceConfig
for _, oldmcval := range oldmcvals {
if str, ok := oldmcval.(string); ok {
newmc = append(newmc, config.MulticastInterfaceConfig{
Regex: str,
Beacon: true,
Listen: true,
})
}
}
if newmc != nil {
if oldport, ok := dat["LinkLocalTCPPort"]; ok {
// numbers parse to float64 by default
if port, ok := oldport.(float64); ok {
for idx := range newmc {
newmc[idx].Port = uint16(port)
}
}
}
dat["MulticastInterfaces"] = newmc
}
}
}
// Sanitise the config
confJson, err := json.Marshal(dat)
if err != nil {
@ -322,7 +280,6 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
fmt.Println(ipnet.String())
}
return
default:
}
n := &node{}
@ -352,8 +309,7 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
}
options = append(options, core.AllowedPublicKey(k[:]))
}
n.core, err = core.New(sk[:], logger, options...)
if err != nil {
if n.core, err = core.New(sk[:], logger, options...); err != nil {
panic(err)
}
}
@ -363,8 +319,7 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
options := []admin.SetupOption{
admin.ListenAddress(cfg.AdminListen),
}
n.admin, err = admin.New(n.core, logger, options...)
if err != nil {
if n.admin, err = admin.New(n.core, logger, options...); err != nil {
panic(err)
}
}
@ -380,8 +335,7 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
Port: intf.Port,
})
}
n.multicast, err = multicast.New(n.core, logger, options...)
if err != nil {
if n.multicast, err = multicast.New(n.core, logger, options...); err != nil {
panic(err)
}
if n.admin != nil {
@ -395,9 +349,7 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
tuntap.InterfaceName(cfg.IfName),
tuntap.InterfaceMTU(cfg.IfMTU),
}
rwc := ipv6rwc.NewReadWriteCloser(n.core)
n.tuntap, err = tuntap.New(rwc, logger, options...)
if err != nil {
if n.tuntap, err = tuntap.New(ipv6rwc.NewReadWriteCloser(n.core), logger, options...); err != nil {
panic(err)
}
if n.admin != nil {

14
src/core/core.go
View File

@ -47,15 +47,17 @@ type Core struct {
}
func New(secret ed25519.PrivateKey, logger util.Logger, opts ...SetupOption) (*Core, error) {
c := &Core{
log: logger,
}
c.ctx, c.cancel = context.WithCancel(context.Background())
// Take a copy of the private key so that it is in our own memory space.
if len(secret) != ed25519.PrivateKeySize {
return nil, fmt.Errorf("private key is incorrect length")
}
c := &Core{
secret: secret,
public: secret.Public().(ed25519.PublicKey),
log: logger,
}
c.ctx, c.cancel = context.WithCancel(context.Background())
c.secret = make(ed25519.PrivateKey, 0, ed25519.PrivateKeySize)
copy(c.secret, secret)
c.public = secret.Public().(ed25519.PublicKey)
var err error
if c.PacketConn, err = iwe.NewPacketConn(c.secret); err != nil {
return nil, fmt.Errorf("error creating encryption: %w", err)