package utils import ( "fmt" "io" "log" "os" "os/signal" "path" "path/filepath" "regexp" "runtime" "time" "bitbucket.org/kardianos/osext" "github.com/ethereum/go-ethereum" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/ethutil" "github.com/ethereum/go-ethereum/logger" "github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/rpc" "github.com/ethereum/go-ethereum/wire" "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 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 DBSanityCheck(db ethutil.Database) error { d, _ := db.Get([]byte("ProtocolVersion")) protov := ethutil.NewValue(d).Uint() if protov != eth.ProtocolVersion && protov != 0 { return fmt.Errorf("Database version mismatch. Protocol(%d / %d). `rm -rf %s`", protov, eth.ProtocolVersion, ethutil.Config.ExecPath+"/database") } return nil } 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) logger.LogSystem { var writer io.Writer if LogFile == "" { writer = os.Stdout } else { writer = openLogFile(Datadir, LogFile) } sys := logger.NewStdLogSystem(writer, log.LstdFlags, logger.LogLevel(LogLevel)) logger.AddLogSystem(sys) if DebugFile != "" { writer = openLogFile(Datadir, DebugFile) logger.AddLogSystem(logger.NewStdLogSystem(writer, log.LstdFlags, logger.DebugLevel)) } return sys } 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 NewDatabase() ethutil.Database { db, err := ethdb.NewLDBDatabase("database") if err != nil { exit(err) } return db } func NewClientIdentity(clientIdentifier, version, customIdentifier string) *wire.SimpleClientIdentity { clilogger.Infoln("identity created") return wire.NewSimpleClientIdentity(clientIdentifier, version, customIdentifier) } func NewEthereum(db ethutil.Database, clientIdentity wire.ClientIdentity, keyManager *crypto.KeyManager, usePnp bool, OutboundPort string, MaxPeer int) *eth.Ethereum { ethereum, err := eth.New(db, clientIdentity, keyManager, eth.CapDefault, usePnp) if err != nil { clilogger.Fatalln("eth start err:", err) } ethereum.Port = OutboundPort ethereum.MaxPeers = MaxPeer return ethereum } func StartEthereum(ethereum *eth.Ethereum, UseSeed bool) { clilogger.Infof("Starting %s", ethereum.ClientIdentity()) ethereum.Start(UseSeed) RegisterInterrupt(func(sig os.Signal) { ethereum.Stop() logger.Flush() }) } func ShowGenesis(ethereum *eth.Ethereum) { clilogger.Infoln(ethereum.ChainManager().Genesis()) exit(nil) } func NewKeyManager(KeyStore string, Datadir string, db ethutil.Database) *crypto.KeyManager { var keyManager *crypto.KeyManager switch { case KeyStore == "db": keyManager = crypto.NewDBKeyManager(db) case KeyStore == "file": keyManager = crypto.NewFileKeyManager(Datadir) default: exit(fmt.Errorf("unknown keystore type: %s", KeyStore)) } return keyManager } 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) } } } 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) } // Give it some time to connect with peers time.Sleep(3 * time.Second) for !ethereum.IsUpToDate() { time.Sleep(5 * time.Second) } 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.PrevHash) _, err := ethereum.BlockManager().ApplyDiff(parent.State(), parent, block) if err != nil { return err } return nil }