Merge pull request #1840 from ethersphere/console

console, cli, api fixes

cmd/geth/js.go

@@ -45,9 +45,12 @@ import (
 	"github.com/robertkrimen/otto"
 )
 
-var passwordRegexp = regexp.MustCompile("personal.[nu]")
-
-const passwordRepl = ""
+var (
+	passwordRegexp = regexp.MustCompile("personal.[nu]")
+	leadingSpace   = regexp.MustCompile("^ ")
+	onlyws         = regexp.MustCompile("^\\s*$")
+	exit           = regexp.MustCompile("^\\s*exit\\s*;*\\s*$")
+)
 
 type prompter interface {
 	AppendHistory(string)
@@ -74,6 +77,7 @@ func (r dumbterm) PasswordPrompt(p string) (string, error) {
 func (r dumbterm) AppendHistory(string) {}
 
 type jsre struct {
+	docRoot    string
 	ds         *docserver.DocServer
 	re         *re.JSRE
 	ethereum   *eth.Ethereum
@@ -145,14 +149,14 @@ func apiWordCompleter(line string, pos int) (head string, completions []string,
 	return begin, completionWords, end
 }
 
-func newLightweightJSRE(libPath string, client comms.EthereumClient, datadir string, interactive bool) *jsre {
+func newLightweightJSRE(docRoot string, client comms.EthereumClient, datadir string, interactive bool) *jsre {
 	js := &jsre{ps1: "> "}
 	js.wait = make(chan *big.Int)
 	js.client = client
-	js.ds = docserver.New("/")
+	js.ds = docserver.New(docRoot)
 
 	// update state in separare forever blocks
-	js.re = re.New(libPath)
+	js.re = re.New(docRoot)
 	if err := js.apiBindings(js); err != nil {
 		utils.Fatalf("Unable to initialize console - %v", err)
 	}
@@ -176,25 +180,25 @@ func newLightweightJSRE(libPath string, client comms.EthereumClient, datadir str
 	return js
 }
 
-func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, client comms.EthereumClient, interactive bool, f xeth.Frontend) *jsre {
-	js := &jsre{ethereum: ethereum, ps1: "> "}
+func newJSRE(ethereum *eth.Ethereum, docRoot, corsDomain string, client comms.EthereumClient, interactive bool, f xeth.Frontend) *jsre {
+	js := &jsre{ethereum: ethereum, ps1: "> ", docRoot: docRoot}
 	// set default cors domain used by startRpc from CLI flag
 	js.corsDomain = corsDomain
 	if f == nil {
 		f = js
 	}
-	js.ds = docserver.New("/")
+	js.ds = docserver.New(docRoot)
 	js.xeth = xeth.New(ethereum, f)
 	js.wait = js.xeth.UpdateState()
 	js.client = client
 	if clt, ok := js.client.(*comms.InProcClient); ok {
-		if offeredApis, err := api.ParseApiString(shared.AllApis, codec.JSON, js.xeth, ethereum); err == nil {
+		if offeredApis, err := api.ParseApiString(shared.AllApis, codec.JSON, js.xeth, ethereum, docRoot); err == nil {
 			clt.Initialize(api.Merge(offeredApis...))
 		}
 	}
 
 	// update state in separare forever blocks
-	js.re = re.New(libPath)
+	js.re = re.New(docRoot)
 	if err := js.apiBindings(f); err != nil {
 		utils.Fatalf("Unable to connect - %v", err)
 	}
@@ -277,7 +281,7 @@ func (js *jsre) apiBindings(f xeth.Frontend) error {
 		apiNames = append(apiNames, a)
 	}
 
-	apiImpl, err := api.ParseApiString(strings.Join(apiNames, ","), codec.JSON, js.xeth, js.ethereum)
+	apiImpl, err := api.ParseApiString(strings.Join(apiNames, ","), codec.JSON, js.xeth, js.ethereum, js.docRoot)
 	if err != nil {
 		utils.Fatalf("Unable to determine supported api's: %v", err)
 	}
@@ -334,6 +338,14 @@ func (js *jsre) apiBindings(f xeth.Frontend) error {
 	return nil
 }
 
+func (self *jsre) AskPassword() (string, bool) {
+	pass, err := self.PasswordPrompt("Passphrase: ")
+	if err != nil {
+		return "", false
+	}
+	return pass, true
+}
+
 func (self *jsre) ConfirmTransaction(tx string) bool {
 	if self.ethereum.NatSpec {
 		notice := natspec.GetNotice(self.xeth, tx, self.ds)
@@ -405,18 +417,17 @@ func (self *jsre) interactive() {
 			fmt.Println("caught interrupt, exiting")
 			return
 		case input, ok := <-inputln:
-			if !ok || indentCount <= 0 && input == "exit" {
+			if !ok || indentCount <= 0 && exit.MatchString(input) {
 				return
 			}
-			if input == "" {
+			if onlyws.MatchString(input) {
 				continue
 			}
 			str += input + "\n"
 			self.setIndent()
 			if indentCount <= 0 {
-				hist := hidepassword(str[:len(str)-1])
-				if len(hist) > 0 {
-					self.AppendHistory(hist)
+				if mustLogInHistory(str) {
+					self.AppendHistory(str[:len(str)-1])
 				}
 				self.parseInput(str)
 				str = ""
@@ -425,12 +436,10 @@ func (self *jsre) interactive() {
 	}
 }
 
-func hidepassword(input string) string {
-	if passwordRegexp.MatchString(input) {
-		return passwordRepl
-	} else {
-		return input
-	}
+func mustLogInHistory(input string) bool {
+	return len(input) == 0 ||
+		passwordRegexp.MatchString(input) ||
+		leadingSpace.MatchString(input)
 }
 
 func (self *jsre) withHistory(datadir string, op func(*os.File)) {

cmd/geth/main.go

@@ -58,11 +58,6 @@ var (
 	gitCommit       string // set via linker flagg
 	nodeNameVersion string
 	app             *cli.App
-
-	ExtraDataFlag = cli.StringFlag{
-		Name:  "extradata",
-		Usage: "Extra data for the miner",
-	}
 )
 
 func init() {
@@ -176,8 +171,12 @@ It is safe to transfer the entire directory or the individual keys therein
 between ethereum nodes by simply copying.
 Make sure you backup your keys regularly.
 
-In order to use your account to send transactions, you need to unlock them using the
-'--unlock' option. The argument is a comma
+In order to use your account to send transactions, you need to unlock them using
+the '--unlock' option. The argument is a space separated list of addresses or
+indexes. If used non-interactively with a passwordfile, the file should contain
+the respective passwords one per line. If you unlock n accounts and the password
+file contains less than n entries, then the last password is meant to apply to
+all remaining accounts.
 
 And finally. DO NOT FORGET YOUR PASSWORD.
 `,
@@ -227,7 +226,7 @@ format to the newest format or change the password for an account.
 
 For non-interactive use the passphrase can be specified with the --password flag:
 
-    ethereum --password <passwordfile> account new
+    ethereum --password <passwordfile> account update <address>
 
 Since only one password can be given, only format update can be performed,
 changing your password is only possible interactively.
@@ -354,7 +353,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.GpobaseStepDownFlag,
 		utils.GpobaseStepUpFlag,
 		utils.GpobaseCorrectionFactorFlag,
-		ExtraDataFlag,
+		utils.ExtraDataFlag,
 	}
 	app.Before = func(ctx *cli.Context) error {
 		utils.SetupLogger(ctx)
@@ -380,8 +379,8 @@ func main() {
 
 // makeExtra resolves extradata for the miner from a flag or returns a default.
 func makeExtra(ctx *cli.Context) []byte {
-	if ctx.GlobalIsSet(ExtraDataFlag.Name) {
-		return []byte(ctx.GlobalString(ExtraDataFlag.Name))
+	if ctx.GlobalIsSet(utils.ExtraDataFlag.Name) {
+		return []byte(ctx.GlobalString(utils.ExtraDataFlag.Name))
 	}
 	return makeDefaultExtra()
 }
@@ -517,28 +516,29 @@ func execJSFiles(ctx *cli.Context) {
 	ethereum.WaitForShutdown()
 }
 
-func unlockAccount(ctx *cli.Context, am *accounts.Manager, addr string, i int) (addrHex, auth string) {
-	utils.CheckLegalese(utils.MustDataDir(ctx))
+func unlockAccount(ctx *cli.Context, am *accounts.Manager, addr string, i int, inputpassphrases []string) (addrHex, auth string, passphrases []string) {
+	utils.CheckLegalese(ctx.GlobalString(utils.DataDirFlag.Name))
 
 	var err error
+	passphrases = inputpassphrases
 	addrHex, err = utils.ParamToAddress(addr, am)
 	if err == nil {
 		// Attempt to unlock the account 3 times
 		attempts := 3
 		for tries := 0; tries < attempts; tries++ {
 			msg := fmt.Sprintf("Unlocking account %s | Attempt %d/%d", addr, tries+1, attempts)
-			auth = getPassPhrase(ctx, msg, false, i)
+			auth, passphrases = getPassPhrase(ctx, msg, false, i, passphrases)
 			err = am.Unlock(common.HexToAddress(addrHex), auth)
-			if err == nil {
+			if err == nil || passphrases != nil {
 				break
 			}
 		}
 	}
 
 	if err != nil {
-		utils.Fatalf("Unlock account failed '%v'", err)
+		utils.Fatalf("Unlock account '%s' (%v) failed: %v", addr, addrHex, err)
 	}
-	fmt.Printf("Account '%s' unlocked.\n", addr)
+	fmt.Printf("Account '%s' (%v) unlocked.\n", addr, addrHex)
 	return
 }
 
@@ -582,12 +582,13 @@ func startEth(ctx *cli.Context, eth *eth.Ethereum) {
 	am := eth.AccountManager()
 	account := ctx.GlobalString(utils.UnlockedAccountFlag.Name)
 	accounts := strings.Split(account, " ")
+	var passphrases []string
 	for i, account := range accounts {
 		if len(account) > 0 {
 			if account == "primary" {
 				utils.Fatalf("the 'primary' keyword is deprecated. You can use integer indexes, but the indexes are not permanent, they can change if you add external keys, export your keys or copy your keystore to another node.")
 			}
-			unlockAccount(ctx, am, account, i)
+			_, _, passphrases = unlockAccount(ctx, am, account, i, passphrases)
 		}
 	}
 	// Start auxiliary services if enabled.
@@ -624,7 +625,7 @@ func accountList(ctx *cli.Context) {
 	}
 }
 
-func getPassPhrase(ctx *cli.Context, desc string, confirmation bool, i int) (passphrase string) {
+func getPassPhrase(ctx *cli.Context, desc string, confirmation bool, i int, inputpassphrases []string) (passphrase string, passphrases []string) {
 	passfile := ctx.GlobalString(utils.PasswordFileFlag.Name)
 	if len(passfile) == 0 {
 		fmt.Println(desc)
@@ -644,14 +645,17 @@ func getPassPhrase(ctx *cli.Context, desc string, confirmation bool, i int) (pas
 		passphrase = auth
 
 	} else {
-		passbytes, err := ioutil.ReadFile(passfile)
-		if err != nil {
-			utils.Fatalf("Unable to read password file '%s': %v", passfile, err)
+		passphrases = inputpassphrases
+		if passphrases == nil {
+			passbytes, err := ioutil.ReadFile(passfile)
+			if err != nil {
+				utils.Fatalf("Unable to read password file '%s': %v", passfile, err)
+			}
+			// this is backwards compatible if the same password unlocks several accounts
+			// it also has the consequence that trailing newlines will not count as part
+			// of the password, so --password <(echo -n 'pass') will now work without -n
+			passphrases = strings.Split(string(passbytes), "\n")
 		}
-		// this is backwards compatible if the same password unlocks several accounts
-		// it also has the consequence that trailing newlines will not count as part
-		// of the password, so --password <(echo -n 'pass') will now work without -n
-		passphrases := strings.Split(string(passbytes), "\n")
 		if i >= len(passphrases) {
 			passphrase = passphrases[len(passphrases)-1]
 		} else {
@@ -665,7 +669,7 @@ func accountCreate(ctx *cli.Context) {
 	utils.CheckLegalese(utils.MustDataDir(ctx))
 
 	am := utils.MakeAccountManager(ctx)
-	passphrase := getPassPhrase(ctx, "Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0)
+	passphrase, _ := getPassPhrase(ctx, "Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0, nil)
 	acct, err := am.NewAccount(passphrase)
 	if err != nil {
 		utils.Fatalf("Could not create the account: %v", err)
@@ -682,8 +686,8 @@ func accountUpdate(ctx *cli.Context) {
 		utils.Fatalf("account address or index must be given as argument")
 	}
 
-	addr, authFrom := unlockAccount(ctx, am, arg, 0)
-	authTo := getPassPhrase(ctx, "Please give a new password. Do not forget this password.", true, 0)
+	addr, authFrom, passphrases := unlockAccount(ctx, am, arg, 0, nil)
+	authTo, _ := getPassPhrase(ctx, "Please give a new password. Do not forget this password.", true, 0, passphrases)
 	err := am.Update(common.HexToAddress(addr), authFrom, authTo)
 	if err != nil {
 		utils.Fatalf("Could not update the account: %v", err)
@@ -703,7 +707,7 @@ func importWallet(ctx *cli.Context) {
 	}
 
 	am := utils.MakeAccountManager(ctx)
-	passphrase := getPassPhrase(ctx, "", false, 0)
+	passphrase, _ := getPassPhrase(ctx, "", false, 0, nil)
 
 	acct, err := am.ImportPreSaleKey(keyJson, passphrase)
 	if err != nil {
@@ -720,7 +724,7 @@ func accountImport(ctx *cli.Context) {
 		utils.Fatalf("keyfile must be given as argument")
 	}
 	am := utils.MakeAccountManager(ctx)
-	passphrase := getPassPhrase(ctx, "Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0)
+	passphrase, _ := getPassPhrase(ctx, "Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0, nil)
 	acct, err := am.Import(keyfile, passphrase)
 	if err != nil {
 		utils.Fatalf("Could not create the account: %v", err)

cmd/utils/cmd.go

@@ -40,7 +40,9 @@ const (
 	importBatchSize = 2500
 )
 
-var interruptCallbacks = []func(os.Signal){}
+var (
+	interruptCallbacks = []func(os.Signal){}
+)
 
 func openLogFile(Datadir string, filename string) *os.File {
 	path := common.AbsolutePath(Datadir, filename)

cmd/utils/flags.go

@@ -183,6 +183,10 @@ var (
 		Usage: "Sets the minimal gasprice when mining transactions",
 		Value: new(big.Int).Mul(big.NewInt(50), common.Shannon).String(),
 	}
+	ExtraDataFlag = cli.StringFlag{
+		Name:  "extradata",
+		Usage: "Extra data for the miner",
+	}
 
 	UnlockedAccountFlag = cli.StringFlag{
 		Name:  "unlock",
@@ -345,7 +349,7 @@ var (
 	// ATM the url is left to the user and deployment to
 	JSpathFlag = cli.StringFlag{
 		Name:  "jspath",
-		Usage: "JS library path to be used with console and js subcommands",
+		Usage: "JS root path for loadScript and document root for admin.httpGet",
 		Value: ".",
 	}
 	SolcPathFlag = cli.StringFlag{
@@ -612,7 +616,7 @@ func StartIPC(eth *eth.Ethereum, ctx *cli.Context) error {
 		xeth := xeth.New(eth, fe)
 		codec := codec.JSON
 
-		apis, err := api.ParseApiString(ctx.GlobalString(IPCApiFlag.Name), codec, xeth, eth)
+		apis, err := api.ParseApiString(ctx.GlobalString(IPCApiFlag.Name), codec, xeth, eth, ctx.GlobalString(JSpathFlag.Name))
 		if err != nil {
 			return nil, err
 		}
@@ -633,7 +637,7 @@ func StartRPC(eth *eth.Ethereum, ctx *cli.Context) error {
 	xeth := xeth.New(eth, nil)
 	codec := codec.JSON
 
-	apis, err := api.ParseApiString(ctx.GlobalString(RpcApiFlag.Name), codec, xeth, eth)
+	apis, err := api.ParseApiString(ctx.GlobalString(RpcApiFlag.Name), codec, xeth, eth, ctx.GlobalString(JSpathFlag.Name))
 	if err != nil {
 		return err
 	}

common/docserver/docserver.go

@@ -95,14 +95,20 @@ func (self *DocServer) Get(uri, path string) (content []byte, err error) {
 			resp.Body.Close()
 		}
 	}()
+
 	if err != nil {
 		return
 	}
+
 	content, err = ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return
 	}
 
+	if resp.StatusCode/100 != 2 {
+		return content, fmt.Errorf("HTTP error: %s", resp.Status)
+	}
+
 	if path != "" {
 		var abspath string
 		abspath, err = filepath.Abs(path)

common/natspec/natspec_e2e_test.go

@@ -21,8 +21,8 @@ import (
 	"io/ioutil"
 	"math/big"
 	"os"
+	"path/filepath"
 	"runtime"
-	"strings"
 	"testing"
 	"time"
 
@@ -38,7 +38,9 @@ import (
 )
 
 const (
+	testAddress = "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 	testBalance = "10000000000000000000"
+	testKey     = "e6fab74a43941f82d89cb7faa408e227cdad3153c4720e540e855c19b15e6674"
 
 	testFileName = "long_file_name_for_testing_registration_of_URLs_longer_than_32_bytes.content"
 
@@ -48,7 +50,7 @@ const (
 
 	testExpNotice2 = `About to submit transaction (NatSpec notice error: abi key does not match any method): {"params":[{"to":"%s","data": "0x31e12c20"}]}`
 
-	testExpNotice3 = `About to submit transaction (no NatSpec info found for contract: content hash not found for '0x1392c62d05b2d149e22a339c531157ae06b44d39a674cce500064b12b9aeb019'): {"params":[{"to":"%s","data": "0x300a3bbfb3a2dea218de5d8bbe6c4645aadbf67b5ab00ecb1a9ec95dbdad6a0eed3e41a7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066696c653a2f2f2f746573742e636f6e74656e74"}]}`
+	testExpNotice3 = `About to submit transaction (no NatSpec info found for contract: HashToHash: content hash not found for '0x1392c62d05b2d149e22a339c531157ae06b44d39a674cce500064b12b9aeb019'): {"params":[{"to":"%s","data": "0x300a3bbfb3a2dea218de5d8bbe6c4645aadbf67b5ab00ecb1a9ec95dbdad6a0eed3e41a7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066696c653a2f2f2f746573742e636f6e74656e74"}]}`
 )
 
 const (
@@ -100,6 +102,10 @@ type testFrontend struct {
 	wantNatSpec bool
 }
 
+func (self *testFrontend) AskPassword() (string, bool) {
+	return "", true
+}
+
 func (self *testFrontend) UnlockAccount(acc []byte) bool {
 	self.ethereum.AccountManager().Unlock(common.BytesToAddress(acc), "password")
 	return true
@@ -115,42 +121,42 @@ func (self *testFrontend) ConfirmTransaction(tx string) bool {
 
 func testEth(t *testing.T) (ethereum *eth.Ethereum, err error) {
 
-	os.RemoveAll("/tmp/eth-natspec/")
-
-	err = os.MkdirAll("/tmp/eth-natspec/keystore", os.ModePerm)
+	tmp, err := ioutil.TempDir("", "natspec-test")
 	if err != nil {
-		panic(err)
+		t.Fatal(err)
 	}
-
-	// create a testAddress
-	ks := crypto.NewKeyStorePassphrase("/tmp/eth-natspec/keystore")
+	db, _ := ethdb.NewMemDatabase()
+	addr := common.HexToAddress(testAddress)
+	core.WriteGenesisBlockForTesting(db, core.GenesisAccount{addr, common.String2Big(testBalance)})
+	ks := crypto.NewKeyStorePassphrase(filepath.Join(tmp, "keystore"))
 	am := accounts.NewManager(ks)
-	testAccount, err := am.NewAccount("password")
+	keyb, err := crypto.HexToECDSA(testKey)
 	if err != nil {
-		panic(err)
+		t.Fatal(err)
+	}
+	key := crypto.NewKeyFromECDSA(keyb)
+	err = ks.StoreKey(key, "")
+	if err != nil {
+		t.Fatal(err)
 	}
 
-	testAddress := strings.TrimPrefix(testAccount.Address.Hex(), "0x")
-
-	db, _ := ethdb.NewMemDatabase()
-	// set up mock genesis with balance on the testAddress
-	core.WriteGenesisBlockForTesting(db, core.GenesisAccount{common.HexToAddress(testAddress), common.String2Big(testBalance)})
-
-	// only use minimalistic stack with no networking
-	ethereum, err = eth.New(&eth.Config{
-		DataDir:        "/tmp/eth-natspec",
-		AccountManager: am,
-		MaxPeers:       0,
-		PowTest:        true,
-		Etherbase:      common.HexToAddress(testAddress),
-		NewDB:          func(path string) (ethdb.Database, error) { return db, nil },
-	})
-
+	err = am.Unlock(key.Address, "")
 	if err != nil {
-		panic(err)
+		t.Fatal(err)
 	}
 
-	return
+	// only use minimalistic stack with no networking
+	return eth.New(&eth.Config{
+		DataDir:                 tmp,
+		AccountManager:          am,
+		Etherbase:               common.HexToAddress(testAddress),
+		MaxPeers:                0,
+		PowTest:                 true,
+		NewDB:                   func(path string) (ethdb.Database, error) { return db, nil },
+		GpoMinGasPrice:          common.Big1,
+		GpobaseCorrectionFactor: 1,
+		GpoMaxGasPrice:          common.Big1,
+	})
 }
 
 func testInit(t *testing.T) (self *testFrontend) {
@@ -174,36 +180,49 @@ func testInit(t *testing.T) (self *testFrontend) {
 
 	// initialise the registry contracts
 	reg := registrar.New(self.xeth)
-	var registrarTxhash, hashRegTxhash, urlHintTxhash string
-	registrarTxhash, err = reg.SetGlobalRegistrar("", addr)
+	registrar.GlobalRegistrarAddr = "0x0"
+
+	var txG, txH, txU string
+	txG, err = reg.SetGlobalRegistrar("", addr)
 	if err != nil {
-		t.Errorf("error creating GlobalRegistrar: %v", err)
+		t.Fatalf("error creating GlobalRegistrar: %v", err)
 	}
+	if !processTxs(self, t, 1) {
+		t.Fatalf("error mining txs")
+	}
+	recG := self.xeth.GetTxReceipt(common.HexToHash(txG))
+	if recG == nil {
+		t.Fatalf("blockchain error creating GlobalRegistrar")
+	}
+	registrar.GlobalRegistrarAddr = recG.ContractAddress.Hex()
 
-	hashRegTxhash, err = reg.SetHashReg("", addr)
+	txH, err = reg.SetHashReg("", addr)
 	if err != nil {
 		t.Errorf("error creating HashReg: %v", err)
 	}
-	urlHintTxhash, err = reg.SetUrlHint("", addr)
+	if !processTxs(self, t, 1) {
+		t.Errorf("error mining txs")
+	}
+	recH := self.xeth.GetTxReceipt(common.HexToHash(txH))
+	if recH == nil {
+		t.Fatalf("blockchain error creating HashReg")
+	}
+	registrar.HashRegAddr = recH.ContractAddress.Hex()
+
+	txU, err = reg.SetUrlHint("", addr)
 	if err != nil {
 		t.Errorf("error creating UrlHint: %v", err)
 	}
-	if !processTxs(self, t, 3) {
+	if !processTxs(self, t, 1) {
 		t.Errorf("error mining txs")
 	}
-	_ = registrarTxhash
-	_ = hashRegTxhash
-	_ = urlHintTxhash
-
-	/* TODO:
-	* lookup receipt and contract addresses by tx hash
-	* name registration for HashReg and UrlHint addresses
-	* mine those transactions
-	* then set once more SetHashReg SetUrlHint
-	 */
+	recU := self.xeth.GetTxReceipt(common.HexToHash(txU))
+	if recU == nil {
+		t.Fatalf("blockchain error creating UrlHint")
+	}
+	registrar.UrlHintAddr = recU.ContractAddress.Hex()
 
 	return
-
 }
 
 // end to end test
@@ -215,7 +234,7 @@ func TestNatspecE2E(t *testing.T) {
 	addr, _ := tf.ethereum.Etherbase()
 
 	// create a contractInfo file (mock cloud-deployed contract metadocs)
-	// incidentally this is the info for the registry contract itself
+	// incidentally this is the info for the HashReg contract itself
 	ioutil.WriteFile("/tmp/"+testFileName, []byte(testContractInfo), os.ModePerm)
 	dochash := crypto.Sha3Hash([]byte(testContractInfo))
 
@@ -223,10 +242,6 @@ func TestNatspecE2E(t *testing.T) {
 	codeb := tf.xeth.CodeAtBytes(registrar.HashRegAddr)
 	codehash := crypto.Sha3Hash(codeb)
 
-	// use resolver to register codehash->dochash->url
-	// test if globalregistry works
-	// registrar.HashRefAddr = "0x0"
-	// registrar.UrlHintAddr = "0x0"
 	reg := registrar.New(tf.xeth)
 	_, err := reg.SetHashToHash(addr, codehash, dochash)
 	if err != nil {

common/registrar/registrar.go

@@ -48,17 +48,16 @@ The Registrar uses 3 contracts on the blockchain:
 These contracts are (currently) not included in the genesis block.
 Each Set<X> needs to be called once on each blockchain/network once.
 
-Contract addresses need to be set (HashReg and UrlHint retrieved from the global
-registrar the first time any Registrar method is called in a client session
-
-So the caller needs to make sure the relevant environment initialised the desired
-contracts
+Contract addresses need to be set the first time any Registrar method is called
+in a client session.
+This is done for frontier by default, otherwise the caller needs to make sure
+the relevant environment initialised the desired contracts
 */
 var (
-	UrlHintAddr         = "0x0"
-	HashRegAddr         = "0x0"
-	GlobalRegistrarAddr = "0x0"
-	// GlobalRegistrarAddr = "0xc6d9d2cd449a754c494264e1809c50e34d64562b"
+	// GlobalRegistrarAddr = "0xc6d9d2cd449a754c494264e1809c50e34d64562b" // olympic
+	GlobalRegistrarAddr = "0x33990122638b9132ca29c723bdf037f1a891a70c" // frontier
+	HashRegAddr         = "0x23bf622b5a65f6060d855fca401133ded3520620" // frontier
+	UrlHintAddr         = "0x73ed5ef6c010727dfd2671dbb70faac19ec18626" // frontier
 
 	zero = regexp.MustCompile("^(0x)?0*$")
 )
@@ -113,7 +112,7 @@ func (self *Registrar) SetGlobalRegistrar(namereg string, addr common.Address) (
 		GlobalRegistrarAddr = namereg
 		return
 	}
-	if GlobalRegistrarAddr == "0x0" || GlobalRegistrarAddr == "0x" {
+	if zero.MatchString(GlobalRegistrarAddr) {
 		if (addr == common.Address{}) {
 			err = fmt.Errorf("GlobalRegistrar address not found and sender for creation not given")
 			return
@@ -200,6 +199,9 @@ func (self *Registrar) SetUrlHint(urlhint string, addr common.Address) (txhash s
 // ReserveName(from, name) reserves name for the sender address in the globalRegistrar
 // the tx needs to be mined to take effect
 func (self *Registrar) ReserveName(address common.Address, name string) (txh string, err error) {
+	if zero.MatchString(GlobalRegistrarAddr) {
+		return "", fmt.Errorf("GlobalRegistrar address is not set")
+	}
 	nameHex, extra := encodeName(name, 2)
 	abi := reserveAbi + nameHex + extra
 	glog.V(logger.Detail).Infof("Reserve data: %s", abi)
@@ -215,6 +217,10 @@ func (self *Registrar) ReserveName(address common.Address, name string) (txh str
 // in the globalRegistrar using from as the sender of the transaction
 // the tx needs to be mined to take effect
 func (self *Registrar) SetAddressToName(from common.Address, name string, address common.Address) (txh string, err error) {
+	if zero.MatchString(GlobalRegistrarAddr) {
+		return "", fmt.Errorf("GlobalRegistrar address is not set")
+	}
+
 	nameHex, extra := encodeName(name, 6)
 	addrHex := encodeAddress(address)
 
@@ -231,6 +237,10 @@ func (self *Registrar) SetAddressToName(from common.Address, name string, addres
 
 // NameToAddr(from, name) queries the registrar for the address on name
 func (self *Registrar) NameToAddr(from common.Address, name string) (address common.Address, err error) {
+	if zero.MatchString(GlobalRegistrarAddr) {
+		return address, fmt.Errorf("GlobalRegistrar address is not set")
+	}
+
 	nameHex, extra := encodeName(name, 2)
 	abi := resolveAbi + nameHex + extra
 	glog.V(logger.Detail).Infof("NameToAddr data: %s", abi)
@@ -249,6 +259,9 @@ func (self *Registrar) NameToAddr(from common.Address, name string) (address com
 
 // called as first step in the registration process on HashReg
 func (self *Registrar) SetOwner(address common.Address) (txh string, err error) {
+	if zero.MatchString(HashRegAddr) {
+		return "", fmt.Errorf("HashReg address is not set")
+	}
 	return self.backend.Transact(
 		address.Hex(),
 		HashRegAddr,
@@ -261,6 +274,10 @@ func (self *Registrar) SetOwner(address common.Address) (txh string, err error)
 // e.g., the contract Info combined Json Doc's ContentHash
 // to CodeHash of a contract or hash of a domain
 func (self *Registrar) SetHashToHash(address common.Address, codehash, dochash common.Hash) (txh string, err error) {
+	if zero.MatchString(HashRegAddr) {
+		return "", fmt.Errorf("HashReg address is not set")
+	}
+
 	_, err = self.SetOwner(address)
 	if err != nil {
 		return
@@ -284,6 +301,10 @@ func (self *Registrar) SetHashToHash(address common.Address, codehash, dochash c
 // FIXME: silently doing nothing if sender is not the owner
 // note that with content addressed storage, this step is no longer necessary
 func (self *Registrar) SetUrlToHash(address common.Address, hash common.Hash, url string) (txh string, err error) {
+	if zero.MatchString(UrlHintAddr) {
+		return "", fmt.Errorf("UrlHint address is not set")
+	}
+
 	hashHex := common.Bytes2Hex(hash[:])
 	var urlHex string
 	urlb := []byte(url)
@@ -321,13 +342,17 @@ func (self *Registrar) SetUrlToHash(address common.Address, hash common.Hash, ur
 // resolution is costless non-transactional
 // implemented as direct retrieval from  db
 func (self *Registrar) HashToHash(khash common.Hash) (chash common.Hash, err error) {
+	if zero.MatchString(HashRegAddr) {
+		return common.Hash{}, fmt.Errorf("HashReg address is not set")
+	}
+
 	// look up in hashReg
 	at := HashRegAddr[2:]
 	key := storageAddress(storageMapping(storageIdx2Addr(1), khash[:]))
 	hash := self.backend.StorageAt(at, key)
 
 	if hash == "0x0" || len(hash) < 3 || (hash == common.Hash{}.Hex()) {
-		err = fmt.Errorf("content hash not found for '%v'", khash.Hex())
+		err = fmt.Errorf("HashToHash: content hash not found for '%v'", khash.Hex())
 		return
 	}
 	copy(chash[:], common.Hex2BytesFixed(hash[2:], 32))
@@ -339,6 +364,9 @@ func (self *Registrar) HashToHash(khash common.Hash) (chash common.Hash, err err
 // implemented as direct retrieval from  db
 // if we use content addressed storage, this step is no longer necessary
 func (self *Registrar) HashToUrl(chash common.Hash) (uri string, err error) {
+	if zero.MatchString(UrlHintAddr) {
+		return "", fmt.Errorf("UrlHint address is not set")
+	}
 	// look up in URL reg
 	var str string = " "
 	var idx uint32
@@ -358,7 +386,7 @@ func (self *Registrar) HashToUrl(chash common.Hash) (uri string, err error) {
 	}
 
 	if len(uri) == 0 {
-		err = fmt.Errorf("GetURLhint: URL hint not found for '%v'", chash.Hex())
+		err = fmt.Errorf("HashToUrl: URL hint not found for '%v'", chash.Hex())
 	}
 	return
 }

common/registrar/registrar_test.go

@@ -36,29 +36,31 @@ var (
 )
 
 func NewTestBackend() *testBackend {
-	HashRegAddr = common.BigToAddress(common.Big0).Hex() //[2:]
-	UrlHintAddr = common.BigToAddress(common.Big1).Hex() //[2:]
 	self := &testBackend{}
 	self.contracts = make(map[string](map[string]string))
+	return self
+}
 
+func (self *testBackend) initHashReg() {
 	self.contracts[HashRegAddr[2:]] = make(map[string]string)
 	key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
 	self.contracts[HashRegAddr[2:]][key] = hash.Hex()
+}
 
+func (self *testBackend) initUrlHint() {
 	self.contracts[UrlHintAddr[2:]] = make(map[string]string)
 	mapaddr := storageMapping(storageIdx2Addr(1), hash[:])
 
-	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
+	key := storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
 	self.contracts[UrlHintAddr[2:]][key] = common.ToHex([]byte(url))
 	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(1)))
 	self.contracts[UrlHintAddr[2:]][key] = "0x0"
-	return self
 }
 
 func (self *testBackend) StorageAt(ca, sa string) (res string) {
 	c := self.contracts[ca]
 	if c == nil {
-		return
+		return "0x0"
 	}
 	res = c[sa]
 	return
@@ -84,9 +86,31 @@ func TestSetGlobalRegistrar(t *testing.T) {
 func TestHashToHash(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b)
-	// res.SetHashReg()
 
+	HashRegAddr = "0x0"
 	got, err := res.HashToHash(codehash)
+	if err == nil {
+		t.Errorf("expected error")
+	} else {
+		exp := "HashReg address is not set"
+		if err.Error() != exp {
+			t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
+		}
+	}
+
+	HashRegAddr = common.BigToAddress(common.Big1).Hex() //[2:]
+	got, err = res.HashToHash(codehash)
+	if err == nil {
+		t.Errorf("expected error")
+	} else {
+		exp := "HashToHash: content hash not found for '" + codehash.Hex() + "'"
+		if err.Error() != exp {
+			t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
+		}
+	}
+
+	b.initHashReg()
+	got, err = res.HashToHash(codehash)
 	if err != nil {
 		t.Errorf("expected no error, got %v", err)
 	} else {
@@ -99,11 +123,33 @@ func TestHashToHash(t *testing.T) {
 func TestHashToUrl(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b)
-	// res.SetUrlHint()
 
+	UrlHintAddr = "0x0"
 	got, err := res.HashToUrl(hash)
+	if err == nil {
+		t.Errorf("expected error")
+	} else {
+		exp := "UrlHint address is not set"
+		if err.Error() != exp {
+			t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
+		}
+	}
+
+	UrlHintAddr = common.BigToAddress(common.Big2).Hex() //[2:]
+	got, err = res.HashToUrl(hash)
+	if err == nil {
+		t.Errorf("expected error")
+	} else {
+		exp := "HashToUrl: URL hint not found for '" + hash.Hex() + "'"
+		if err.Error() != exp {
+			t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
+		}
+	}
+
+	b.initUrlHint()
+	got, err = res.HashToUrl(hash)
 	if err != nil {
-		t.Errorf("expected 	 error, got %v", err)
+		t.Errorf("expected no error, got %v", err)
 	} else {
 		if got != url {
 			t.Errorf("incorrect result, expected '%v', got '%s'", url, got)

crypto/crypto.go

@@ -261,6 +261,9 @@ func decryptPreSaleKey(fileContent []byte, password string) (key *Key, err error
 	passBytes := []byte(password)
 	derivedKey := pbkdf2.Key(passBytes, passBytes, 2000, 16, sha256.New)
 	plainText, err := aesCBCDecrypt(derivedKey, cipherText, iv)
+	if err != nil {
+		return nil, err
+	}
 	ethPriv := Sha3(plainText)
 	ecKey := ToECDSA(ethPriv)
 	key = &Key{
@@ -271,7 +274,7 @@ func decryptPreSaleKey(fileContent []byte, password string) (key *Key, err error
 	derivedAddr := hex.EncodeToString(key.Address.Bytes()) // needed because .Hex() gives leading "0x"
 	expectedAddr := preSaleKeyStruct.EthAddr
 	if derivedAddr != expectedAddr {
-		err = errors.New(fmt.Sprintf("decrypted addr not equal to expected addr ", derivedAddr, expectedAddr))
+		err = fmt.Errorf("decrypted addr '%s' not equal to expected addr '%s'", derivedAddr, expectedAddr)
 	}
 	return key, err
 }

eth/backend.go

@@ -26,7 +26,9 @@ import (
 	"math/big"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/ethereum/ethash"
@@ -62,6 +64,9 @@ const (
 var (
 	jsonlogger = logger.NewJsonLogger()
 
+	datadirInUseErrNos = []uint{11, 32, 35}
+	portInUseErrRE     = regexp.MustCompile("address already in use")
+
 	defaultBootNodes = []*discover.Node{
 		// ETH/DEV Go Bootnodes
 		discover.MustParseNode("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303"), // IE
@@ -282,6 +287,17 @@ func New(config *Config) (*Ethereum, error) {
 	// Open the chain database and perform any upgrades needed
 	chainDb, err := newdb(filepath.Join(config.DataDir, "chaindata"))
 	if err != nil {
+		var ok bool
+		errno := uint(err.(syscall.Errno))
+		for _, no := range datadirInUseErrNos {
+			if errno == no {
+				ok = true
+				break
+			}
+		}
+		if ok {
+			err = fmt.Errorf("%v (check if another instance of geth is already running with the same data directory '%s')", err, config.DataDir)
+		}
 		return nil, fmt.Errorf("blockchain db err: %v", err)
 	}
 	if db, ok := chainDb.(*ethdb.LDBDatabase); ok {
@@ -296,6 +312,16 @@ func New(config *Config) (*Ethereum, error) {
 
 	dappDb, err := newdb(filepath.Join(config.DataDir, "dapp"))
 	if err != nil {
+		var ok bool
+		for _, no := range datadirInUseErrNos {
+			if uint(err.(syscall.Errno)) == no {
+				ok = true
+				break
+			}
+		}
+		if ok {
+			err = fmt.Errorf("%v (check if another instance of geth is already running with the same data directory '%s')", err, config.DataDir)
+		}
 		return nil, fmt.Errorf("dapp db err: %v", err)
 	}
 	if db, ok := dappDb.(*ethdb.LDBDatabase); ok {
@@ -553,6 +579,9 @@ func (s *Ethereum) Start() error {
 	})
 	err := s.net.Start()
 	if err != nil {
+		if portInUseErrRE.MatchString(err.Error()) {
+			err = fmt.Errorf("%v (possibly another instance of geth is using the same port)", err)
+		}
 		return err
 	}
 

rpc/api/admin.go

@@ -84,17 +84,19 @@ type adminApi struct {
 	ethereum *eth.Ethereum
 	codec    codec.Codec
 	coder    codec.ApiCoder
+	docRoot  string
 	ds       *docserver.DocServer
 }
 
 // create a new admin api instance
-func NewAdminApi(xeth *xeth.XEth, ethereum *eth.Ethereum, codec codec.Codec) *adminApi {
+func NewAdminApi(xeth *xeth.XEth, ethereum *eth.Ethereum, codec codec.Codec, docRoot string) *adminApi {
 	return &adminApi{
 		xeth:     xeth,
 		ethereum: ethereum,
 		codec:    codec,
 		coder:    codec.New(nil),
-		ds:       docserver.New("/"),
+		docRoot:  docRoot,
+		ds:       docserver.New(docRoot),
 	}
 }
 
@@ -256,7 +258,7 @@ func (self *adminApi) StartRPC(req *shared.Request) (interface{}, error) {
 		CorsDomain:    args.CorsDomain,
 	}
 
-	apis, err := ParseApiString(args.Apis, self.codec, self.xeth, self.ethereum)
+	apis, err := ParseApiString(args.Apis, self.codec, self.xeth, self.ethereum, self.docRoot)
 	if err != nil {
 		return false, err
 	}

rpc/api/api_test.go

@@ -30,7 +30,7 @@ import (
 )
 
 func TestParseApiString(t *testing.T) {
-	apis, err := ParseApiString("", codec.JSON, nil, nil)
+	apis, err := ParseApiString("", codec.JSON, nil, nil, "")
 	if err == nil {
 		t.Errorf("Expected an err from parsing empty API string but got nil")
 	}
@@ -39,7 +39,7 @@ func TestParseApiString(t *testing.T) {
 		t.Errorf("Expected 0 apis from empty API string")
 	}
 
-	apis, err = ParseApiString("eth", codec.JSON, nil, nil)
+	apis, err = ParseApiString("eth", codec.JSON, nil, nil, "")
 	if err != nil {
 		t.Errorf("Expected nil err from parsing empty API string but got %v", err)
 	}
@@ -48,7 +48,7 @@ func TestParseApiString(t *testing.T) {
 		t.Errorf("Expected 1 apis but got %d - %v", apis, apis)
 	}
 
-	apis, err = ParseApiString("eth,eth", codec.JSON, nil, nil)
+	apis, err = ParseApiString("eth,eth", codec.JSON, nil, nil, "")
 	if err != nil {
 		t.Errorf("Expected nil err from parsing empty API string but got \"%v\"", err)
 	}
@@ -57,7 +57,7 @@ func TestParseApiString(t *testing.T) {
 		t.Errorf("Expected 2 apis but got %d - %v", apis, apis)
 	}
 
-	apis, err = ParseApiString("eth,invalid", codec.JSON, nil, nil)
+	apis, err = ParseApiString("eth,invalid", codec.JSON, nil, nil, "")
 	if err == nil {
 		t.Errorf("Expected an err but got no err")
 	}

rpc/api/personal.go

@@ -98,9 +98,22 @@ func (self *personalApi) NewAccount(req *shared.Request) (interface{}, error) {
 	if err := self.codec.Decode(req.Params, &args); err != nil {
 		return nil, shared.NewDecodeParamError(err.Error())
 	}
-
+	var passwd string
+	if args.Passphrase == nil {
+		fe := self.xeth.Frontend()
+		if fe == nil {
+			return false, fmt.Errorf("unable to create account: unable to interact with user")
+		}
+		var ok bool
+		passwd, ok = fe.AskPassword()
+		if !ok {
+			return false, fmt.Errorf("unable to create account: no password given")
+		}
+	} else {
+		passwd = *args.Passphrase
+	}
 	am := self.ethereum.AccountManager()
-	acc, err := am.NewAccount(args.Passphrase)
+	acc, err := am.NewAccount(passwd)
 	return acc.Address.Hex(), err
 }
 

rpc/api/personal_args.go

@@ -23,7 +23,7 @@ import (
 )
 
 type NewAccountArgs struct {
-	Passphrase string
+	Passphrase *string
 }
 
 func (args *NewAccountArgs) UnmarshalJSON(b []byte) (err error) {
@@ -32,16 +32,15 @@ func (args *NewAccountArgs) UnmarshalJSON(b []byte) (err error) {
 		return shared.NewDecodeParamError(err.Error())
 	}
 
-	if len(obj) < 1 {
-		return shared.NewInsufficientParamsError(len(obj), 1)
-	}
-
-	if passhrase, ok := obj[0].(string); ok {
-		args.Passphrase = passhrase
-		return nil
+	if len(obj) >= 1 && obj[0] != nil {
+		if passphrasestr, ok := obj[0].(string); ok {
+			args.Passphrase = &passphrasestr
+		} else {
+			return shared.NewInvalidTypeError("passphrase", "not a string")
+		}
 	}
 
-	return shared.NewInvalidTypeError("passhrase", "not a string")
+	return nil
 }
 
 type UnlockAccountArgs struct {

rpc/api/utils.go

@@ -33,14 +33,21 @@ var (
 		"admin": []string{
 			"addPeer",
 			"datadir",
+			"enableUserAgent",
 			"exportChain",
 			"getContractInfo",
+			"httpGet",
 			"importChain",
 			"nodeInfo",
 			"peers",
 			"register",
 			"registerUrl",
+			"saveInfo",
+			"setGlobalRegistrar",
+			"setHashReg",
+			"setUrlHint",
 			"setSolc",
+			"sleep",
 			"sleepBlocks",
 			"startNatSpec",
 			"startRPC",
@@ -146,7 +153,7 @@ var (
 )
 
 // Parse a comma separated API string to individual api's
-func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.Ethereum) ([]shared.EthereumApi, error) {
+func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.Ethereum, docRoot string) ([]shared.EthereumApi, error) {
 	if len(strings.TrimSpace(apistr)) == 0 {
 		return nil, fmt.Errorf("Empty apistr provided")
 	}
@@ -157,7 +164,7 @@ func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.
 	for i, name := range names {
 		switch strings.ToLower(strings.TrimSpace(name)) {
 		case shared.AdminApiName:
-			apis[i] = NewAdminApi(xeth, eth, codec)
+			apis[i] = NewAdminApi(xeth, eth, codec, docRoot)
 		case shared.DebugApiName:
 			apis[i] = NewDebugApi(xeth, eth, codec)
 		case shared.DbApiName:

rpc/jeth.go

@@ -158,11 +158,11 @@ func (self *Jeth) askPassword(id interface{}, jsonrpc string, args []interface{}
 	if len(args) >= 1 {
 		if account, ok := args[0].(string); ok {
 			fmt.Printf("Unlock account %s\n", account)
-			passwd, err = utils.PromptPassword("Passphrase: ", true)
 		} else {
 			return false
 		}
 	}
+	passwd, err = utils.PromptPassword("Passphrase: ", true)
 
 	if err = self.client.Send(shared.NewRpcResponse(id, jsonrpc, passwd, err)); err != nil {
 		glog.V(logger.Info).Infof("Unable to send user agent ask password response - %v\n", err)

rpc/useragent/remote_frontend.go

@@ -49,6 +49,31 @@ func (fe *RemoteFrontend) Enable() {
 	fe.enabled = true
 }
 
+func (fe *RemoteFrontend) AskPassword() (string, bool) {
+	if !fe.enabled {
+		return "", false
+	}
+
+	err := fe.send(AskPasswordMethod)
+	if err != nil {
+		glog.V(logger.Error).Infof("Unable to send password request to agent - %v\n", err)
+		return "", false
+	}
+
+	passwdRes, err := fe.recv()
+	if err != nil {
+		glog.V(logger.Error).Infof("Unable to recv password response from agent - %v\n", err)
+		return "", false
+	}
+
+	if passwd, ok := passwdRes.Result.(string); ok {
+		return passwd, true
+	}
+
+	return "", false
+
+}
+
 // UnlockAccount asks the user agent for the user password and tries to unlock the account.
 // It will try 3 attempts before giving up.
 func (fe *RemoteFrontend) UnlockAccount(address []byte) bool {

xeth/frontend.go

@@ -19,6 +19,9 @@ package xeth
 // Frontend should be implemented by users of XEth. Its methods are
 // called whenever XEth makes a decision that requires user input.
 type Frontend interface {
+	// AskPassword is called when a new account is created or updated
+	AskPassword() (string, bool)
+
 	// UnlockAccount is called when a transaction needs to be signed
 	// but the key corresponding to the transaction's sender is
 	// locked.
@@ -40,5 +43,6 @@ type Frontend interface {
 // transactions but cannot not unlock any keys.
 type dummyFrontend struct{}
 
+func (dummyFrontend) AskPassword() (string, bool)    { return "", false }
 func (dummyFrontend) UnlockAccount([]byte) bool      { return false }
 func (dummyFrontend) ConfirmTransaction(string) bool { return true }