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