mirror of
https://github.com/wealdtech/ethdo.git
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83 lines
3.0 KiB
Go
83 lines
3.0 KiB
Go
// Copyright © 2017-2020 Weald Technology Trading
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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"context"
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"fmt"
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"os"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"github.com/wealdtech/go-bytesutil"
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e2types "github.com/wealdtech/go-eth2-types/v2"
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e2wallet "github.com/wealdtech/go-eth2-wallet"
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e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
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)
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// signatureSignCmd represents the signature sign command
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var signatureSignCmd = &cobra.Command{
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Use: "sign",
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Short: "Sign a 32-byte piece of data",
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Long: `Sign presented data. For example:
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ethdo signature sign --data=0x5f24e819400c6a8ee2bfc014343cd971b7eb707320025a7bcd83e621e26c35b7 --account="Personal wallet/Operations" --passphrase="my account passphrase"
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In quiet mode this will return 0 if the data can be signed, otherwise 1.`,
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Run: func(cmd *cobra.Command, args []string) {
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ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
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defer cancel()
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assert(viper.GetString("signature-data") != "", "--data is required")
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data, err := bytesutil.FromHexString(viper.GetString("signature-data"))
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errCheck(err, "Failed to parse data")
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assert(len(data) == 32, "data to sign must be 32 bytes")
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domain := e2types.Domain(e2types.DomainType([4]byte{0, 0, 0, 0}), e2types.ZeroForkVersion, e2types.ZeroGenesisValidatorsRoot)
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if viper.GetString("signature-domain") != "" {
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domain, err = bytesutil.FromHexString(viper.GetString("signature-domain"))
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errCheck(err, "Failed to parse domain")
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assert(len(domain) == 32, "Domain data invalid")
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}
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outputIf(debug, fmt.Sprintf("Domain is %#x", domain))
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assert(viper.GetString("account") != "", "--account is required")
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wallet, err := openWallet()
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errCheck(err, "Failed to access wallet")
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_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
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errCheck(err, "Failed to obtain account name")
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accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
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assert(isAccountByNameProvider, "wallet does not support obtaining accounts by name")
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account, err := accountByNameProvider.AccountByName(ctx, accountName)
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errCheck(err, "Failed to obtain account")
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var fixedSizeData [32]byte
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copy(fixedSizeData[:], data)
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signature, err := signRoot(account, fixedSizeData, domain)
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errCheck(err, "Failed to sign")
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outputIf(!quiet, fmt.Sprintf("%#x", signature.Marshal()))
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os.Exit(_exitSuccess)
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},
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}
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func init() {
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signatureCmd.AddCommand(signatureSignCmd)
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signatureFlags(signatureSignCmd)
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}
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