/
enscontenthashget.go
70 lines (56 loc) · 2.16 KB
/
enscontenthashget.go
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// Copyright © 2017-2019 Weald Technology Trading
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/engram-network/gramreal/v2/cli"
ens "github.com/wealdtech/go-ens/v3"
)
var ensContenthashGetRaw bool
// ensContenthashGetCmd represents the content hash get command.
var ensContenthashGetCmd = &cobra.Command{
Use: "get",
Short: "Obtain the content hash of an ENS domain",
Long: `Obtain the content hash of a domain registered with the Ethereum Name Service (ENS). For example:
gramreal ens contenthash get --domain=enstest.eth
In quiet mode this will return 0 if the name has a valid content hash, otherwise 1.`,
Run: func(cmd *cobra.Command, args []string) {
cli.Assert(ensDomain != "", quiet, "--domain is required")
// Obtain resolver for the domain.
resolver, err := ens.NewResolver(c.Client(), ensDomain)
cli.ErrCheck(err, quiet, "No resolver for that name")
bytes, err := resolver.Contenthash()
cli.ErrCheck(err, quiet, "Failed to obtain content hash for that domain")
cli.Assert(len(bytes) > 0, quiet, "No content hash for that domain")
if ensContenthashGetRaw {
if !quiet {
fmt.Printf("%x\n", bytes)
}
os.Exit(exitSuccess)
}
outputIf(debug, fmt.Sprintf("data is %x", bytes))
res, err := ens.ContenthashToString(bytes)
cli.ErrCheck(err, quiet, "Invalid content hash data")
if !quiet {
fmt.Printf("%s\n", res)
}
os.Exit(exitSuccess)
},
}
func init() {
ensContenthashFlags(ensContenthashGetCmd)
ensContenthashGetCmd.Flags().BoolVar(&ensContenthashGetRaw, "raw", false, "output raw content hash bytes")
ensContenthashCmd.AddCommand(ensContenthashGetCmd)
}