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* amend * building * build * userprompt * imports * build val * gaz * io file Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
// This binary is a simple rest API endpoint to calculate
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// the ENR value of a node given its private key,ip address and port.
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package main
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import (
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"crypto/ecdsa"
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"encoding/hex"
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"flag"
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"net"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/ethereum/go-ethereum/p2p/enr"
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"github.com/libp2p/go-libp2p-core/crypto"
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"github.com/prysmaticlabs/prysm/io/file"
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_ "github.com/prysmaticlabs/prysm/runtime/maxprocs"
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log "github.com/sirupsen/logrus"
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)
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var (
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privateKey = flag.String("private", "", "Hex encoded Private key to use for calculation of ENR")
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udpPort = flag.Int("udp-port", 0, "UDP Port to use for calculation of ENR")
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tcpPort = flag.Int("tcp-port", 0, "TCP Port to use for calculation of ENR")
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ipAddr = flag.String("ipAddress", "", "IP to use in calculation of ENR")
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outfile = flag.String("out", "", "Filepath to write ENR")
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)
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func main() {
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flag.Parse()
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if *privateKey == "" {
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log.Fatal("No private key given")
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}
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dst, err := hex.DecodeString(*privateKey)
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if err != nil {
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panic(err)
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}
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unmarshalledKey, err := crypto.UnmarshalSecp256k1PrivateKey(dst)
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if err != nil {
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panic(err)
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}
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ecdsaPrivKey := (*ecdsa.PrivateKey)(unmarshalledKey.(*crypto.Secp256k1PrivateKey))
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if net.ParseIP(*ipAddr).To4() == nil {
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log.Fatalf("Invalid ipv4 address given: %v\n", err)
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}
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if *udpPort == 0 {
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log.Fatalf("Invalid udp port given: %v\n", err)
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return
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}
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db, err := enode.OpenDB("")
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if err != nil {
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log.Fatalf("Could not open node's peer database: %v\n", err)
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return
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}
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defer db.Close()
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localNode := enode.NewLocalNode(db, ecdsaPrivKey)
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ipEntry := enr.IP(net.ParseIP(*ipAddr))
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udpEntry := enr.UDP(*udpPort)
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localNode.Set(ipEntry)
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localNode.Set(udpEntry)
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if *tcpPort != 0 {
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tcpEntry := enr.TCP(*tcpPort)
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localNode.Set(tcpEntry)
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}
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log.Info(localNode.Node().String())
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if *outfile != "" {
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err := file.WriteFile(*outfile, []byte(localNode.Node().String()))
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if err != nil {
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panic(err)
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}
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log.Infof("Wrote to %s", *outfile)
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}
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}
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