1 files changed, 58 insertions, 1 deletions
diff --git a/cmd/swarm/hash.go b/cmd/swarm/hash.go
index 471feb53d..2df02c0ed 100644
--- a/cmd/swarm/hash.go
+++ b/cmd/swarm/hash.go
@@ -19,10 +19,13 @@ package main
 
 import (
 	"context"
+	"encoding/hex"
 	"fmt"
 	"os"
 
 	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/contracts/ens"
 	"github.com/ethereum/go-ethereum/swarm/storage"
 	"gopkg.in/urfave/cli.v1"
 )
@@ -34,7 +37,33 @@ var hashCommand = cli.Command{
 	Usage:              "print the swarm hash of a file or directory",
 	ArgsUsage:          "<file>",
 	Description:        "Prints the swarm hash of file or directory",
-}
+	Subcommands: []cli.Command{
+		{
+			CustomHelpTemplate: helpTemplate,
+			Name:               "ens",
+			Usage:              "converts a swarm hash to an ens EIP1577 compatible CIDv1 hash",
+			ArgsUsage:          "<ref>",
+			Description:        "",
+			Subcommands: []cli.Command{
+				{
+					Action:             encodeEipHash,
+					CustomHelpTemplate: helpTemplate,
+					Name:               "contenthash",
+					Usage:              "converts a swarm hash to an ens EIP1577 compatible CIDv1 hash",
+					ArgsUsage:          "<ref>",
+					Description:        "",
+				},
+				{
+					Action:             ensNodeHash,
+					CustomHelpTemplate: helpTemplate,
+					Name:               "node",
+					Usage:              "converts an ens name to an ENS node hash",
+					ArgsUsage:          "<ref>",
+					Description:        "",
+				},
+			},
+		},
+	}}
 
 func hash(ctx *cli.Context) {
 	args := ctx.Args()
@@ -56,3 +85,31 @@ func hash(ctx *cli.Context) {
 		fmt.Printf("%v\n", addr)
 	}
 }
+func ensNodeHash(ctx *cli.Context) {
+	args := ctx.Args()
+	if len(args) < 1 {
+		utils.Fatalf("Usage: swarm hash ens node <ens name>")
+	}
+	ensName := args[0]
+
+	hash := ens.EnsNode(ensName)
+
+	stringHex := hex.EncodeToString(hash[:])
+	fmt.Println(stringHex)
+}
+func encodeEipHash(ctx *cli.Context) {
+	args := ctx.Args()
+	if len(args) < 1 {
+		utils.Fatalf("Usage: swarm hash ens <swarm hash>")
+	}
+	swarmHash := args[0]
+
+	hash := common.HexToHash(swarmHash)
+	ensHash, err := ens.EncodeSwarmHash(hash)
+	if err != nil {
+		utils.Fatalf("error converting swarm hash", err)
+	}
+
+	stringHex := hex.EncodeToString(ensHash)
+	fmt.Println(stringHex)
+}