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// Copyright 2017 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"bufio"
"errors"
"fmt"
"math/big"
"os"
"reflect"
"unicode"
cli "gopkg.in/urfave/cli.v1"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/dashboard"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
"github.com/naoina/toml"
)
var (
dumpConfigCommand = cli.Command{
Action: utils.MigrateFlags(dumpConfig),
Name: "dumpconfig",
Usage: "Show configuration values",
ArgsUsage: "",
Flags: append(append(nodeFlags, rpcFlags...), whisperFlags...),
Category: "MISCELLANEOUS COMMANDS",
Description: `The dumpconfig command shows configuration values.`,
}
configFileFlag = cli.StringFlag{
Name: "config",
Usage: "TOML configuration file",
}
)
// These settings ensure that TOML keys use the same names as Go struct fields.
var tomlSettings = toml.Config{
NormFieldName: func(rt reflect.Type, key string) string {
return key
},
FieldToKey: func(rt reflect.Type, field string) string {
return field
},
MissingField: func(rt reflect.Type, field string) error {
link := ""
if unicode.IsUpper(rune(rt.Name()[0])) && rt.PkgPath() != "main" {
link = fmt.Sprintf(", see https://godoc.org/%s#%s for available fields", rt.PkgPath(), rt.Name())
}
return fmt.Errorf("field '%s' is not defined in %s%s", field, rt.String(), link)
},
}
type ethstatsConfig struct {
URL string `toml:",omitempty"`
}
type gethConfig struct {
Eth eth.Config
Shh whisper.Config
Node node.Config
Ethstats ethstatsConfig
Dashboard dashboard.Config
}
func loadConfig(file string, cfg *gethConfig) error {
f, err := os.Open(file)
if err != nil {
return err
}
defer f.Close()
err = tomlSettings.NewDecoder(bufio.NewReader(f)).Decode(cfg)
// Add file name to errors that have a line number.
if _, ok := err.(*toml.LineError); ok {
err = errors.New(file + ", " + err.Error())
}
return err
}
func defaultNodeConfig() node.Config {
cfg := node.DefaultConfig
cfg.Name = clientIdentifier
cfg.Version = params.VersionWithCommit(gitCommit)
cfg.HTTPModules = append(cfg.HTTPModules, "eth", "shh")
cfg.WSModules = append(cfg.WSModules, "eth", "shh")
cfg.IPCPath = "geth.ipc"
return cfg
}
func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
// Load defaults.
cfg := gethConfig{
Eth: eth.DefaultConfig,
Shh: whisper.DefaultConfig,
Node: defaultNodeConfig(),
Dashboard: dashboard.DefaultConfig,
}
// Load config file.
if file := ctx.GlobalString(configFileFlag.Name); file != "" {
if err := loadConfig(file, &cfg); err != nil {
utils.Fatalf("%v", err)
}
}
// Apply flags.
utils.SetNodeConfig(ctx, &cfg.Node)
stack, err := node.New(&cfg.Node)
if err != nil {
utils.Fatalf("Failed to create the protocol stack: %v", err)
}
utils.SetEthConfig(ctx, stack, &cfg.Eth)
if ctx.GlobalIsSet(utils.EthStatsURLFlag.Name) {
cfg.Ethstats.URL = ctx.GlobalString(utils.EthStatsURLFlag.Name)
}
utils.SetShhConfig(ctx, stack, &cfg.Shh)
utils.SetDashboardConfig(ctx, &cfg.Dashboard)
return stack, cfg
}
// enableWhisper returns true in case one of the whisper flags is set.
func enableWhisper(ctx *cli.Context) bool {
for _, flag := range whisperFlags {
if ctx.GlobalIsSet(flag.GetName()) {
return true
}
}
return false
}
func makeFullNode(ctx *cli.Context) *node.Node {
stack, cfg := makeConfigNode(ctx)
if ctx.GlobalIsSet(utils.ConstantinopleOverrideFlag.Name) {
cfg.Eth.ConstantinopleOverride = new(big.Int).SetUint64(ctx.GlobalUint64(utils.ConstantinopleOverrideFlag.Name))
}
utils.RegisterEthService(stack, &cfg.Eth)
if ctx.GlobalBool(utils.DashboardEnabledFlag.Name) {
utils.RegisterDashboardService(stack, &cfg.Dashboard, gitCommit)
}
// Whisper must be explicitly enabled by specifying at least 1 whisper flag or in dev mode
shhEnabled := enableWhisper(ctx)
shhAutoEnabled := !ctx.GlobalIsSet(utils.WhisperEnabledFlag.Name) && ctx.GlobalIsSet(utils.DeveloperFlag.Name)
if shhEnabled || shhAutoEnabled {
if ctx.GlobalIsSet(utils.WhisperMaxMessageSizeFlag.Name) {
cfg.Shh.MaxMessageSize = uint32(ctx.Int(utils.WhisperMaxMessageSizeFlag.Name))
}
if ctx.GlobalIsSet(utils.WhisperMinPOWFlag.Name) {
cfg.Shh.MinimumAcceptedPOW = ctx.Float64(utils.WhisperMinPOWFlag.Name)
}
if ctx.GlobalIsSet(utils.WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
cfg.Shh.RestrictConnectionBetweenLightClients = true
}
utils.RegisterShhService(stack, &cfg.Shh)
}
// Add the Ethereum Stats daemon if requested.
if cfg.Ethstats.URL != "" {
utils.RegisterEthStatsService(stack, cfg.Ethstats.URL)
}
return stack
}
// dumpConfig is the dumpconfig command.
func dumpConfig(ctx *cli.Context) error {
_, cfg := makeConfigNode(ctx)
comment := ""
if cfg.Eth.Genesis != nil {
cfg.Eth.Genesis = nil
comment += "# Note: this config doesn't contain the genesis block.\n\n"
}
out, err := tomlSettings.Marshal(&cfg)
if err != nil {
return err
}
dump := os.Stdout
if ctx.NArg() > 0 {
dump, err = os.OpenFile(ctx.Args().Get(0), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
return err
}
defer dump.Close()
}
dump.WriteString(comment)
dump.Write(out)
return nil
}
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