1 files changed, 306 insertions, 0 deletions
diff --git a/cmd/utils/cmd.go b/cmd/utils/cmd.go
new file mode 100644
index 000000000..c26dab44c
--- /dev/null
+++ b/cmd/utils/cmd.go
@@ -0,0 +1,306 @@
+/*
+	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"
+	rpchttp "github.com/ethereum/go-ethereum/rpc/http"
+	rpcws "github.com/ethereum/go-ethereum/rpc/ws"
+	"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 = rpchttp.NewRpcHttpServer(xeth.New(ethereum), RpcPort)
+	if err != nil {
+		clilogger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
+	} else {
+		go ethereum.RpcServer.Start()
+	}
+}
+
+func StartWebSockets(eth *eth.Ethereum, wsPort int) {
+	clilogger.Infoln("Starting WebSockets")
+
+	var err error
+	eth.WsServer, err = rpcws.NewWebSocketServer(xeth.New(eth), wsPort)
+	if err != nil {
+		clilogger.Errorf("Could not start RPC interface (port %v): %v", wsPort, err)
+	} else {
+		go eth.WsServer.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
+}