node: add keccak256 as an admin command
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commit
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@ -1,6 +1,7 @@
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package guardiand
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import (
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"bufio"
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"context"
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"encoding/csv"
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"encoding/hex"
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@ -18,6 +19,7 @@ import (
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/mr-tron/base58"
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"github.com/spf13/pflag"
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"golang.org/x/crypto/sha3"
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gossipv1 "github.com/certusone/wormhole/node/pkg/proto/gossip/v1"
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publicrpcv1 "github.com/certusone/wormhole/node/pkg/proto/publicrpc/v1"
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@ -82,6 +84,7 @@ func init() {
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AdminCmd.AddCommand(PurgePythNetVaasCmd)
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AdminCmd.AddCommand(SignExistingVaaCmd)
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AdminCmd.AddCommand(SignExistingVaasFromCSVCmd)
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AdminCmd.AddCommand(Keccak256Hash)
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}
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var AdminCmd = &cobra.Command{
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@ -187,6 +190,13 @@ var DumpRPCs = &cobra.Command{
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Args: cobra.ExactArgs(0),
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}
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var Keccak256Hash = &cobra.Command{
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Use: "keccak256",
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Short: "Compute legacy keccak256 hash",
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Run: runKeccak256Hash,
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Args: cobra.ExactArgs(0),
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}
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func getAdminClient(ctx context.Context, addr string) (*grpc.ClientConn, nodev1.NodePrivilegedServiceClient, error) {
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conn, err := grpc.DialContext(ctx, fmt.Sprintf("unix:///%s", addr), grpc.WithTransportCredentials(insecure.NewCredentials()))
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@ -673,3 +683,28 @@ func runSignExistingVaasFromCSV(cmd *cobra.Command, args []string) {
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log.Printf("Successfully signed %d out of %d VAAs", counter, numOldVAAs)
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newVAAWriter.Flush()
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}
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// This exposes keccak256 as a command line utility, mostly for validating goverance messages
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// that use this hash. There isn't any common utility that computes this since this is nonstandard outside of evm.
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// It is used similar to other hashing utilities, e.g. `cat <file> | guardiand admin keccak256`.
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func runKeccak256Hash(cmd *cobra.Command, args []string) {
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reader := bufio.NewReader(os.Stdin)
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hash := sha3.NewLegacyKeccak256()
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// ~10 MB chunks
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buf := make([]byte, 10*1024*1024)
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for {
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count, err := reader.Read(buf)
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if err != nil && err != io.EOF {
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log.Fatalf("could not read: %v", err)
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}
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_, errHash := hash.Write(buf[:count])
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if errHash != nil {
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log.Fatalf("could not hash: %v", errHash)
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}
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if err == io.EOF {
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break
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}
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}
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digest := hash.Sum([]byte{})
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fmt.Printf("%s", hex.EncodeToString(digest))
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}
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