1 files changed, 253 insertions, 0 deletions
diff --git a/utils/cmd.go b/utils/cmd.go
new file mode 100644
index 000000000..dc435a700
--- /dev/null
+++ b/utils/cmd.go
@@ -0,0 +1,253 @@
+package utils
+
+import (
+	"fmt"
+	"github.com/ethereum/eth-go"
+	"github.com/ethereum/eth-go/ethcrypto"
+	"github.com/ethereum/eth-go/ethdb"
+	"github.com/ethereum/eth-go/ethlog"
+	"github.com/ethereum/eth-go/ethminer"
+	"github.com/ethereum/eth-go/ethpub"
+	"github.com/ethereum/eth-go/ethrpc"
+	"github.com/ethereum/eth-go/ethutil"
+	"io"
+	"log"
+	"os"
+	"os/signal"
+	"path"
+	"time"
+)
+
+var logger = ethlog.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 {
+			logger.Errorf("Shutting down (%v) ... \n", sig)
+			RunInterruptCallbacks(sig)
+		}
+	}()
+}
+
+func RunInterruptCallbacks(sig os.Signal) {
+	for _, cb := range interruptCallbacks {
+		cb(sig)
+	}
+}
+
+func AbsolutePath(Datadir string, filename string) string {
+	if path.IsAbs(filename) {
+		return filename
+	}
+	return path.Join(Datadir, filename)
+}
+
+func openLogFile(Datadir string, filename string) *os.File {
+	path := 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?", 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 InitLogging(Datadir string, LogFile string, LogLevel int, DebugFile string) {
+	var writer io.Writer
+	if LogFile == "" {
+		writer = os.Stdout
+	} else {
+		writer = openLogFile(Datadir, LogFile)
+	}
+	ethlog.AddLogSystem(ethlog.NewStdLogSystem(writer, log.LstdFlags, ethlog.LogLevel(LogLevel)))
+	if DebugFile != "" {
+		writer = openLogFile(Datadir, DebugFile)
+		ethlog.AddLogSystem(ethlog.NewStdLogSystem(writer, log.LstdFlags, ethlog.DebugLevel))
+	}
+}
+
+func InitConfig(ConfigFile string, Datadir string, Identifier string, EnvPrefix string) {
+	InitDataDir(Datadir)
+	ethutil.ReadConfig(ConfigFile, Datadir, Identifier, EnvPrefix)
+}
+
+func exit(err error) {
+	status := 0
+	if err != nil {
+		logger.Errorln("Fatal: ", err)
+		status = 1
+	}
+	ethlog.Flush()
+	os.Exit(status)
+}
+
+func NewDatabase() ethutil.Database {
+	db, err := ethdb.NewLDBDatabase("database")
+	if err != nil {
+		exit(err)
+	}
+	return db
+}
+
+func NewEthereum(db ethutil.Database, keyManager *ethcrypto.KeyManager, usePnp bool, OutboundPort string, MaxPeer int) *eth.Ethereum {
+	ethereum, err := eth.New(db, keyManager, eth.CapDefault, usePnp)
+	if err != nil {
+		logger.Fatalln("eth start err:", err)
+	}
+	ethereum.Port = OutboundPort
+	ethereum.MaxPeers = MaxPeer
+	return ethereum
+}
+
+func StartEthereum(ethereum *eth.Ethereum, UseSeed bool) {
+	logger.Infof("Starting Ethereum v%s", ethutil.Config.Ver)
+	ethereum.Start(UseSeed)
+	RegisterInterrupt(func(sig os.Signal) {
+		ethereum.Stop()
+		ethlog.Flush()
+	})
+}
+
+func ShowGenesis(ethereum *eth.Ethereum) {
+	logger.Infoln(ethereum.BlockChain().Genesis())
+	exit(nil)
+}
+
+func NewKeyManager(KeyStore string, Datadir string, db ethutil.Database) *ethcrypto.KeyManager {
+	var keyManager *ethcrypto.KeyManager
+	switch {
+	case KeyStore == "db":
+		keyManager = ethcrypto.NewDBKeyManager(db)
+	case KeyStore == "file":
+		keyManager = ethcrypto.NewFileKeyManager(Datadir)
+	default:
+		exit(fmt.Errorf("unknown keystore type: %s", KeyStore))
+	}
+	return keyManager
+}
+
+func KeyTasks(keyManager *ethcrypto.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:
+		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)
+		}
+	}
+}
+
+func StartRpc(ethereum *eth.Ethereum, RpcPort int) {
+	var err error
+	ethereum.RpcServer, err = ethrpc.NewJsonRpcServer(ethpub.NewPEthereum(ethereum), RpcPort)
+	if err != nil {
+		logger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
+	} else {
+		go ethereum.RpcServer.Start()
+	}
+}
+
+var miner ethminer.Miner
+
+func StartMining(ethereum *eth.Ethereum) bool {
+	if !ethereum.Mining {
+		ethereum.Mining = true
+
+		addr := ethereum.KeyManager().Address()
+
+		go func() {
+			miner = ethminer.NewDefaultMiner(addr, ethereum)
+			// Give it some time to connect with peers
+			time.Sleep(3 * time.Second)
+			for !ethereum.IsUpToDate() == false {
+				time.Sleep(5 * time.Second)
+			}
+
+			logger.Infoln("Miner started")
+			miner := ethminer.NewDefaultMiner(addr, ethereum)
+			miner.Start()
+		}()
+		RegisterInterrupt(func(os.Signal) {
+			StopMining(ethereum)
+		})
+		return true
+	}
+	return false
+}
+
+func StopMining(ethereum *eth.Ethereum) bool {
+	if ethereum.Mining {
+		miner.Stop()
+		logger.Infoln("Miner stopped")
+		ethereum.Mining = false
+		return true
+	}
+	return false
+}
+
+// Replay block
+func BlockDo(ethereum *eth.Ethereum, hash []byte) error {
+	block := ethereum.BlockChain().GetBlock(hash)
+	if block == nil {
+		return fmt.Errorf("unknown block %x", hash)
+	}
+
+	parent := ethereum.BlockChain().GetBlock(block.PrevHash)
+
+	_, err := ethereum.StateManager().ApplyDiff(parent.State(), parent, block)
+	if err != nil {
+		return err
+	}
+
+	return nil
+
+}