plugeth/cmd/utils/cmd.go
2015-01-07 13:17:48 +01:00

294 lines
6.9 KiB
Go

/*
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/>.
*/
/**
* @authors
* Jeffrey Wilcke <i@jev.io>
* Viktor Tron <viktor@ethdev.com>
*/
package utils
import (
"fmt"
"os"
"os/signal"
"path"
"path/filepath"
"regexp"
"runtime"
"bitbucket.org/kardianos/osext"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/state"
"github.com/ethereum/go-ethereum/xeth"
)
var clilogger = logger.NewLogger("CLI")
var interruptCallbacks = []func(os.Signal){}
// Register interrupt handlers callbacks
func RegisterInterrupt(cb func(os.Signal)) {
interruptCallbacks = append(interruptCallbacks, cb)
}
// go routine that call interrupt handlers in order of registering
func HandleInterrupt() {
c := make(chan os.Signal, 1)
go func() {
signal.Notify(c, os.Interrupt)
for sig := range c {
clilogger.Errorf("Shutting down (%v) ... \n", sig)
RunInterruptCallbacks(sig)
}
}()
}
func RunInterruptCallbacks(sig os.Signal) {
for _, cb := range interruptCallbacks {
cb(sig)
}
}
func openLogFile(Datadir string, filename string) *os.File {
path := ethutil.AbsolutePath(Datadir, filename)
file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
panic(fmt.Sprintf("error opening log file '%s': %v", filename, err))
}
return file
}
func confirm(message string) bool {
fmt.Println(message, "Are you sure? (y/n)")
var r string
fmt.Scanln(&r)
for ; ; fmt.Scanln(&r) {
if r == "n" || r == "y" {
break
} else {
fmt.Printf("Yes or no? (%s)", r)
}
}
return r == "y"
}
func initDataDir(Datadir string) {
_, err := os.Stat(Datadir)
if err != nil {
if os.IsNotExist(err) {
fmt.Printf("Data directory '%s' doesn't exist, creating it\n", Datadir)
os.Mkdir(Datadir, 0777)
}
}
}
func InitConfig(vmType int, ConfigFile string, Datadir string, EnvPrefix string) *ethutil.ConfigManager {
initDataDir(Datadir)
cfg := ethutil.ReadConfig(ConfigFile, Datadir, EnvPrefix)
cfg.VmType = vmType
return cfg
}
func exit(err error) {
status := 0
if err != nil {
clilogger.Errorln("Fatal: ", err)
status = 1
}
logger.Flush()
os.Exit(status)
}
func StartEthereum(ethereum *eth.Ethereum, UseSeed bool) {
clilogger.Infof("Starting %s", ethereum.ClientIdentity())
err := ethereum.Start(UseSeed)
if err != nil {
exit(err)
}
RegisterInterrupt(func(sig os.Signal) {
ethereum.Stop()
logger.Flush()
})
}
func DefaultAssetPath() string {
var assetPath string
// If the current working directory is the go-ethereum dir
// assume a debug build and use the source directory as
// asset directory.
pwd, _ := os.Getwd()
if pwd == path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist") {
assetPath = path.Join(pwd, "assets")
} else {
switch runtime.GOOS {
case "darwin":
// Get Binary Directory
exedir, _ := osext.ExecutableFolder()
assetPath = filepath.Join(exedir, "../Resources")
case "linux":
assetPath = "/usr/share/mist"
case "windows":
assetPath = "./assets"
default:
assetPath = "."
}
}
return assetPath
}
func KeyTasks(keyManager *crypto.KeyManager, KeyRing string, GenAddr bool, SecretFile string, ExportDir string, NonInteractive bool) {
var err error
switch {
case GenAddr:
if NonInteractive || confirm("This action overwrites your old private key.") {
err = keyManager.Init(KeyRing, 0, true)
}
exit(err)
case len(SecretFile) > 0:
SecretFile = ethutil.ExpandHomePath(SecretFile)
if NonInteractive || confirm("This action overwrites your old private key.") {
err = keyManager.InitFromSecretsFile(KeyRing, 0, SecretFile)
}
exit(err)
case len(ExportDir) > 0:
err = keyManager.Init(KeyRing, 0, false)
if err == nil {
err = keyManager.Export(ExportDir)
}
exit(err)
default:
// Creates a keypair if none exists
err = keyManager.Init(KeyRing, 0, false)
if err != nil {
exit(err)
}
}
clilogger.Infof("Main address %x\n", keyManager.Address())
}
func StartRpc(ethereum *eth.Ethereum, RpcPort int) {
var err error
ethereum.RpcServer, err = rpc.NewJsonRpcServer(xeth.NewJSXEth(ethereum), RpcPort)
if err != nil {
clilogger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
} else {
go ethereum.RpcServer.Start()
}
}
var gminer *miner.Miner
func GetMiner() *miner.Miner {
return gminer
}
func StartMining(ethereum *eth.Ethereum) bool {
if !ethereum.Mining {
ethereum.Mining = true
addr := ethereum.KeyManager().Address()
go func() {
clilogger.Infoln("Start mining")
if gminer == nil {
gminer = miner.New(addr, ethereum)
}
gminer.Start()
}()
RegisterInterrupt(func(os.Signal) {
StopMining(ethereum)
})
return true
}
return false
}
func FormatTransactionData(data string) []byte {
d := ethutil.StringToByteFunc(data, func(s string) (ret []byte) {
slice := regexp.MustCompile("\\n|\\s").Split(s, 1000000000)
for _, dataItem := range slice {
d := ethutil.FormatData(dataItem)
ret = append(ret, d...)
}
return
})
return d
}
func StopMining(ethereum *eth.Ethereum) bool {
if ethereum.Mining && gminer != nil {
gminer.Stop()
clilogger.Infoln("Stopped mining")
ethereum.Mining = false
return true
}
return false
}
// Replay block
func BlockDo(ethereum *eth.Ethereum, hash []byte) error {
block := ethereum.ChainManager().GetBlock(hash)
if block == nil {
return fmt.Errorf("unknown block %x", hash)
}
parent := ethereum.ChainManager().GetBlock(block.ParentHash())
statedb := state.New(parent.Root(), ethereum.Db())
_, err := ethereum.BlockProcessor().TransitionState(statedb, parent, block)
if err != nil {
return err
}
return nil
}
func ImportChain(ethereum *eth.Ethereum, fn string) error {
clilogger.Infof("importing chain '%s'\n", fn)
fh, err := os.OpenFile(fn, os.O_RDONLY, os.ModePerm)
if err != nil {
return err
}
defer fh.Close()
var chain types.Blocks
if err := rlp.Decode(fh, &chain); err != nil {
return err
}
ethereum.ChainManager().Reset()
if err := ethereum.ChainManager().InsertChain(chain); err != nil {
return err
}
clilogger.Infof("imported %d blocks\n", len(chain))
return nil
}