[#1083] neofs-cli: use single flag for key and wallet

Currently have static priority of what key is used irregardless of
whether a flag was provided via CLI or in config. This makes it
impossible to override some of the config settings. While we could try
to check if the key is provided by CLI by binding CLI flag under to
viper under a different name the same problem would occur for config/environment
variables. Fixing all of this with current set of keys is too complicate.
In this commit we revert changes from #610 and use a single flag for all types of keys.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

cmd/neofs-cli/modules/accounting.go

@@ -23,9 +23,7 @@ var accountingCmd = &cobra.Command{
 	PersistentPreRun: func(cmd *cobra.Command, args []string) {
 		flags := cmd.Flags()
 
-		_ = viper.BindPFlag(binaryKey, flags.Lookup(binaryKey))
 		_ = viper.BindPFlag(walletPath, flags.Lookup(walletPath))
-		_ = viper.BindPFlag(wif, flags.Lookup(wif))
 		_ = viper.BindPFlag(address, flags.Lookup(address))
 		_ = viper.BindPFlag(rpc, flags.Lookup(rpc))
 		_ = viper.BindPFlag(verbose, flags.Lookup(verbose))
@@ -68,9 +66,7 @@ var accountingBalanceCmd = &cobra.Command{
 func initAccountingBalanceCmd() {
 	ff := accountingBalanceCmd.Flags()
 
-	ff.StringP(binaryKey, binaryKeyShorthand, binaryKeyDefault, binaryKeyUsage)
 	ff.StringP(walletPath, walletPathShorthand, walletPathDefault, walletPathUsage)
-	ff.StringP(wif, wifShorthand, wifDefault, wifUsage)
 	ff.StringP(address, addressShorthand, addressDefault, addressUsage)
 	ff.StringP(rpc, rpcShorthand, rpcDefault, rpcUsage)
 	ff.BoolP(verbose, verboseShorthand, verboseDefault, verboseUsage)

cmd/neofs-cli/modules/control.go

@@ -25,9 +25,7 @@ var controlCmd = &cobra.Command{
 		ff := cmd.Flags()
 
 		_ = viper.BindPFlag(generateKey, ff.Lookup(generateKey))
-		_ = viper.BindPFlag(binaryKey, ff.Lookup(binaryKey))
 		_ = viper.BindPFlag(walletPath, ff.Lookup(walletPath))
-		_ = viper.BindPFlag(wif, ff.Lookup(wif))
 		_ = viper.BindPFlag(address, ff.Lookup(address))
 		_ = viper.BindPFlag(controlRPC, ff.Lookup(controlRPC))
 		_ = viper.BindPFlag(verbose, ff.Lookup(verbose))

cmd/neofs-cli/modules/key_test.go

@@ -0,0 +1,123 @@
+package cmd
+
+import (
+	"bytes"
+	"errors"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/cli/input"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+	"golang.org/x/term"
+)
+
+func Test_getKey(t *testing.T) {
+	dir := t.TempDir()
+
+	wallPath := path.Join(dir, "wallet.json")
+	w, err := wallet.NewWallet(wallPath)
+	require.NoError(t, err)
+
+	acc1, err := wallet.NewAccount()
+	require.NoError(t, err)
+	require.NoError(t, acc1.Encrypt("pass", keys.NEP2ScryptParams()))
+	w.AddAccount(acc1)
+
+	acc2, err := wallet.NewAccount()
+	require.NoError(t, err)
+	require.NoError(t, acc2.Encrypt("pass", keys.NEP2ScryptParams()))
+	acc2.Default = true
+	w.AddAccount(acc2)
+	require.NoError(t, w.Save())
+	w.Close()
+
+	keyPath := path.Join(dir, "binary.key")
+	rawKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+	require.NoError(t, ioutil.WriteFile(keyPath, rawKey.Bytes(), os.ModePerm))
+
+	wifKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	nep2Key, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+	nep2, err := keys.NEP2Encrypt(nep2Key, "pass", keys.NEP2ScryptParams())
+	require.NoError(t, err)
+
+	in := bytes.NewBuffer(nil)
+	input.Terminal = term.NewTerminal(input.ReadWriter{
+		Reader: in,
+		Writer: ioutil.Discard,
+	}, "")
+
+	checkKeyError(t, filepath.Join(dir, "badfile"), errInvalidKey)
+
+	t.Run("wallet", func(t *testing.T) {
+		checkKeyError(t, wallPath, errInvalidPassword)
+
+		in.WriteString("invalid\r")
+		checkKeyError(t, wallPath, errInvalidPassword)
+
+		in.WriteString("pass\r")
+		checkKey(t, wallPath, acc2.PrivateKey()) // default account
+
+		viper.Set(address, acc1.Address)
+		in.WriteString("pass\r")
+		checkKey(t, wallPath, acc1.PrivateKey())
+
+		viper.Set(address, "not an address")
+		checkKeyError(t, wallPath, errInvalidAddress)
+
+		acc, err := wallet.NewAccount()
+		require.NoError(t, err)
+		viper.Set(address, acc.Address)
+		checkKeyError(t, wallPath, errInvalidAddress)
+	})
+
+	t.Run("WIF", func(t *testing.T) {
+		checkKey(t, wifKey.WIF(), wifKey)
+	})
+
+	t.Run("NEP-2", func(t *testing.T) {
+		checkKeyError(t, nep2, errInvalidPassword)
+
+		in.WriteString("invalid\r")
+		checkKeyError(t, nep2, errInvalidPassword)
+
+		in.WriteString("pass\r")
+		checkKey(t, nep2, nep2Key)
+	})
+
+	t.Run("raw key", func(t *testing.T) {
+		checkKey(t, keyPath, rawKey)
+	})
+
+	t.Run("generate", func(t *testing.T) {
+		viper.Set(generateKey, true)
+		actual, err := getKey()
+		require.NoError(t, err)
+		require.NotNil(t, actual)
+		for _, p := range []*keys.PrivateKey{nep2Key, rawKey, wifKey, acc1.PrivateKey(), acc2.PrivateKey()} {
+			require.NotEqual(t, p, actual, "expected new key to be generated")
+		}
+	})
+}
+
+func checkKeyError(t *testing.T, desc string, err error) {
+	viper.Set(walletPath, desc)
+	_, actualErr := getKey()
+	require.True(t, errors.Is(actualErr, err), "got: %v", actualErr)
+}
+
+func checkKey(t *testing.T, desc string, expected *keys.PrivateKey) {
+	viper.Set(walletPath, desc)
+	actual, err := getKey()
+	require.NoError(t, err)
+	require.Equal(t, &expected.PrivateKey, actual)
+}

cmd/neofs-cli/modules/root.go

@@ -44,20 +44,10 @@ const (
 	generateKeyDefault   = false
 	generateKeyUsage     = "generate new private key"
 
-	binaryKey          = "binary-key"
-	binaryKeyShorthand = ""
-	binaryKeyDefault   = ""
-	binaryKeyUsage     = "path to the raw private key file"
-
 	walletPath          = "wallet"
 	walletPathShorthand = "w"
 	walletPathDefault   = ""
-	walletPathUsage     = "path to the wallet"
-
-	wif          = "wif"
-	wifShorthand = ""
-	wifDefault   = ""
-	wifUsage     = "WIF or NEP-2"
+	walletPathUsage     = "WIF (NEP-2) string or path to the wallet or binary key"
 
 	address          = "address"
 	addressShorthand = ""
@@ -183,29 +173,34 @@ func getKey() (*ecdsa.PrivateKey, error) {
 		return &priv.PrivateKey, nil
 	}
 
-	if keyPath := viper.GetString(binaryKey); keyPath != "" {
-		return getKeyFromFile(keyPath)
+	// Ideally we want to touch file-system on the last step.
+	// However, asking for NEP-2 password seems to be confusing if we provide a wallet.
+	// Thus we try keys in the following order:
+	// 1. WIF
+	// 2. Raw binary key
+	// 3. Wallet file
+	// 4. NEP-2 encrypted WIF.
+	keyDesc := viper.GetString(walletPath)
+	priv, err := keys.NewPrivateKeyFromWIF(keyDesc)
+	if err == nil {
+		return &priv.PrivateKey, nil
 	}
 
-	if walletPath := viper.GetString(walletPath); walletPath != "" {
-		w, err := wallet.NewWalletFromFile(walletPath)
-		if err != nil {
-			return nil, fmt.Errorf("%w: %v", errInvalidKey, err)
+	p, err := getKeyFromFile(keyDesc)
+	if err == nil {
+		return p, nil
 	}
+
+	w, err := wallet.NewWalletFromFile(keyDesc)
+	if err == nil {
 		return getKeyFromWallet(w, viper.GetString(address))
 	}
 
-	wif := viper.GetString(wif)
-	if len(wif) == nep2Base58Length {
-		return getKeyFromNEP2(wif)
+	if len(keyDesc) == nep2Base58Length {
+		return getKeyFromNEP2(keyDesc)
 	}
 
-	priv, err := keys.NewPrivateKeyFromWIF(wif)
-	if err != nil {
-		return nil, fmt.Errorf("%w: %v", errInvalidKey, err)
-	}
-
-	return &priv.PrivateKey, nil
+	return nil, errInvalidKey
 }
 
 func getKeyFromFile(keyPath string) (*ecdsa.PrivateKey, error) {
@@ -404,9 +399,7 @@ func initCommonFlags(cmd *cobra.Command) {
 	ff := cmd.Flags()
 
 	ff.BoolP(generateKey, generateKeyShorthand, generateKeyDefault, generateKeyUsage)
-	ff.StringP(binaryKey, binaryKeyShorthand, binaryKeyDefault, binaryKeyUsage)
 	ff.StringP(walletPath, walletPathShorthand, walletPathDefault, walletPathUsage)
-	ff.StringP(wif, wifShorthand, wifDefault, wifUsage)
 	ff.StringP(address, addressShorthand, addressDefault, addressUsage)
 	ff.StringP(rpc, rpcShorthand, rpcDefault, rpcUsage)
 	ff.BoolP(verbose, verboseShorthand, verboseDefault, verboseUsage)
@@ -417,9 +410,7 @@ func bindCommonFlags(cmd *cobra.Command) {
 	ff := cmd.Flags()
 
 	_ = viper.BindPFlag(generateKey, ff.Lookup(generateKey))
-	_ = viper.BindPFlag(binaryKey, ff.Lookup(binaryKey))
 	_ = viper.BindPFlag(walletPath, ff.Lookup(walletPath))
-	_ = viper.BindPFlag(wif, ff.Lookup(wif))
 	_ = viper.BindPFlag(address, ff.Lookup(address))
 	_ = viper.BindPFlag(rpc, ff.Lookup(rpc))
 	_ = viper.BindPFlag(verbose, ff.Lookup(verbose))

cmd/neofs-cli/modules/util.go

@@ -33,9 +33,7 @@ var (
 			flags := cmd.Flags()
 
 			_ = viper.BindPFlag(generateKey, flags.Lookup(generateKey))
-			_ = viper.BindPFlag(binaryKey, flags.Lookup(binaryKey))
 			_ = viper.BindPFlag(walletPath, flags.Lookup(walletPath))
-			_ = viper.BindPFlag(wif, flags.Lookup(wif))
 			_ = viper.BindPFlag(address, flags.Lookup(address))
 			_ = viper.BindPFlag(verbose, flags.Lookup(verbose))
 		},
@@ -194,9 +192,7 @@ func initCommonFlagsWithoutRPC(cmd *cobra.Command) {
 	flags := cmd.Flags()
 
 	flags.BoolP(generateKey, generateKeyShorthand, generateKeyDefault, generateKeyUsage)
-	flags.StringP(binaryKey, binaryKeyShorthand, binaryKeyDefault, binaryKeyUsage)
 	flags.StringP(walletPath, walletPathShorthand, walletPathDefault, walletPathUsage)
-	flags.StringP(wif, wifShorthand, wifDefault, wifUsage)
 	flags.StringP(address, addressShorthand, addressDefault, addressUsage)
 	flags.BoolP(verbose, verboseShorthand, verboseDefault, verboseUsage)
 }