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cmd.go
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cmd.go
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// Copyright 2018 The klaytn Authors
// Copyright 2017 AMIS Technologies
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package extra
import (
"fmt"
"gopkg.in/urfave/cli.v1"
"os"
"github.com/klaytn/klaytn/common"
"github.com/naoina/toml"
)
var (
ExtraCommand = cli.Command{
Name: "extra",
Usage: "Istanbul extraData manipulation",
Subcommands: []cli.Command{
{
Action: decode,
Name: "decode",
Usage: "To decode an Istanbul extraData",
ArgsUsage: "<extra data>",
Flags: []cli.Flag{
extraDataFlag,
},
Description: `
This command decodes extraData to vanity and validators.
`,
},
{
Action: encode,
Name: "encode",
Usage: "To encode an Istanbul extraData",
ArgsUsage: "<config file> or \"0xValidator1,0xValidator2...\"",
Flags: []cli.Flag{
configFlag,
validatorsFlag,
vanityFlag,
},
Description: `
This command encodes vanity and validators to extraData. Please refer to example/config.toml.
`,
},
},
}
)
func encode(ctx *cli.Context) error {
path := ctx.String(configFlag.Name)
validators := ctx.String(validatorsFlag.Name)
if len(path) == 0 && len(validators) == 0 {
return cli.NewExitError("Must supply config file or enter validators", 0)
}
if len(path) != 0 {
extraData, err := fromConfig(path)
if err != nil {
return cli.NewExitError("Failed to encode from config data", 0)
}
fmt.Println("Encoded Istanbul extra-data:", extraData)
}
if len(validators) != 0 {
extraData, err := fromRawData(ctx.String(vanityFlag.Name), validators)
if err != nil {
return cli.NewExitError("Failed to encode from flags", 0)
}
fmt.Println("Encoded Istanbul extra-data:", extraData)
}
return nil
}
func fromRawData(vanity string, validators string) (string, error) {
vs := splitAndTrim(validators)
addrs := make([]common.Address, len(vs))
for i, v := range vs {
addrs[i] = common.HexToAddress(v)
}
return Encode(vanity, addrs)
}
func fromConfig(path string) (string, error) {
file, err := os.Open(path)
if err != nil {
return "", cli.NewExitError(fmt.Sprintf("Failed to read config file: %v", err), 1)
}
defer file.Close()
var config struct {
Vanity string
Validators []common.Address
}
if err := toml.NewDecoder(file).Decode(&config); err != nil {
return "", cli.NewExitError(fmt.Sprintf("Failed to parse config file: %v", err), 2)
}
return Encode(config.Vanity, config.Validators)
}
func decode(ctx *cli.Context) error {
if !ctx.IsSet(extraDataFlag.Name) {
return cli.NewExitError("Must supply extra data", 10)
}
extraString := ctx.String(extraDataFlag.Name)
vanity, istanbulExtra, err := Decode(extraString)
if err != nil {
return err
}
fmt.Println("vanity: ", "0x"+common.Bytes2Hex(vanity))
for _, v := range istanbulExtra.Validators {
fmt.Println("validator: ", v.Hex())
}
if len(istanbulExtra.Seal) != 0 {
fmt.Println("seal:", "0x"+common.Bytes2Hex(istanbulExtra.Seal))
}
for _, seal := range istanbulExtra.CommittedSeal {
fmt.Println("committed seal: ", "0x"+common.Bytes2Hex(seal))
}
return nil
}