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cmd/bootnode: Add support for outputting a node's ID on the command line

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This commit is contained in:
Nick Johnson 2016-07-15 11:09:37 +01:00
parent f970610c04
commit 91130ea3fc
1 changed files with 16 additions and 12 deletions
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28
cmd/bootnode/main.go
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@ -20,6 +20,7 @@ package main
import (
"crypto/ecdsa"
"flag"
"fmt"
"os"
"github.com/ethereum/go-ethereum/cmd/utils"
@ -32,7 +33,8 @@ import (
func main() {
var (
listenAddr = flag.String("addr", ":30301", "listen address")
genKey = flag.String("genkey", "", "generate a node key and quit")
genKey = flag.String("genkey", "", "generate a node key")
writeAddr = flag.Bool("writeaddress", false, "write out the node's pubkey hash and quit")
nodeKeyFile = flag.String("nodekey", "", "private key filename")
nodeKeyHex = flag.String("nodekeyhex", "", "private key as hex (for testing)")
natdesc = flag.String("nat", "none", "port mapping mechanism (any|none|upnp|pmp|extip:<IP>)")
@ -45,22 +47,19 @@ func main() {
glog.SetToStderr(true)
flag.Parse()
if *genKey != "" {
key, err := crypto.GenerateKey()
if err != nil {
utils.Fatalf("could not generate key: %v", err)
}
if err := crypto.SaveECDSA(*genKey, key); err != nil {
utils.Fatalf("%v", err)
}
os.Exit(0)
}
natm, err := nat.Parse(*natdesc)
if err != nil {
utils.Fatalf("-nat: %v", err)
}
switch {
case *genKey != "":
nodeKey, err = crypto.GenerateKey()
if err != nil {
utils.Fatalf("could not generate key: %v", err)
}
if err = crypto.SaveECDSA(*genKey, nodeKey); err != nil {
utils.Fatalf("%v", err)
}
case *nodeKeyFile == "" && *nodeKeyHex == "":
utils.Fatalf("Use -nodekey or -nodekeyhex to specify a private key")
case *nodeKeyFile != "" && *nodeKeyHex != "":
@ -75,6 +74,11 @@ func main() {
}
}
if *writeAddr {
fmt.Printf("%v\n", discover.PubkeyID(&nodeKey.PublicKey))
os.Exit(0)
}
if _, err := discover.ListenUDP(nodeKey, *listenAddr, natm, ""); err != nil {
utils.Fatalf("%v", err)
}