neoneo-go/cli/wallet/wallet.go

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package wallet
import (
"bufio"
"context"
"encoding/hex"
"errors"
"fmt"
"os"
"strings"
"syscall"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/urfave/cli"
"golang.org/x/crypto/ssh/terminal"
)
var (
errNoPath = errors.New("target path where the wallet should be stored is mandatory and should be passed using (--path, -p) flags")
errPhraseMismatch = errors.New("the entered pass-phrases do not match. Maybe you have misspelled them")
)
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var (
walletPathFlag = cli.StringFlag{
Name: "path, p",
Usage: "Target location of the wallet file.",
}
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wifFlag = cli.StringFlag{
Name: "wif",
Usage: "WIF to import",
}
decryptFlag = cli.BoolFlag{
Name: "decrypt, d",
Usage: "Decrypt encrypted keys.",
}
rpcFlag = cli.StringFlag{
Name: "rpc, r",
Usage: "RPC node address",
}
timeoutFlag = cli.DurationFlag{
Name: "timeout, t",
Usage: "Timeout for the operation",
}
outFlag = cli.StringFlag{
Name: "out",
Usage: "file to put JSON transaction to",
}
inFlag = cli.StringFlag{
Name: "in",
Usage: "file with JSON transaction",
}
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fromAddrFlag = flags.AddressFlag{
Name: "from",
Usage: "Address to send an asset from",
}
toAddrFlag = flags.AddressFlag{
Name: "to",
Usage: "Address to send an asset to",
}
forceFlag = cli.BoolFlag{
Name: "force",
Usage: "Do not ask for a confirmation",
}
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)
// NewCommands returns 'wallet' command.
func NewCommands() []cli.Command {
return []cli.Command{{
Name: "wallet",
Usage: "create, open and manage a NEO wallet",
Subcommands: []cli.Command{
{
Name: "claim",
Usage: "claim GAS",
Action: claimGas,
Flags: []cli.Flag{
walletPathFlag,
rpcFlag,
timeoutFlag,
flags.AddressFlag{
Name: "address, a",
Usage: "Address to claim GAS for",
},
},
},
{
Name: "init",
Usage: "create a new wallet",
Action: createWallet,
Flags: []cli.Flag{
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walletPathFlag,
cli.BoolFlag{
Name: "account, a",
Usage: "Create a new account",
},
},
},
{
Name: "create",
Usage: "add an account to the existing wallet",
Action: addAccount,
Flags: []cli.Flag{
walletPathFlag,
},
},
{
Name: "dump",
Usage: "check and dump an existing NEO wallet",
Action: dumpWallet,
Flags: []cli.Flag{
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walletPathFlag,
decryptFlag,
},
},
{
Name: "export",
Usage: "export keys for address",
UsageText: "export --path <path> [--decrypt] [<address>]",
Action: exportKeys,
Flags: []cli.Flag{
walletPathFlag,
decryptFlag,
},
},
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{
Name: "import",
Usage: "import WIF",
Action: importWallet,
Flags: []cli.Flag{
walletPathFlag,
wifFlag,
cli.StringFlag{
Name: "name, n",
Usage: "Optional account name",
},
cli.StringFlag{
Name: "contract",
Usage: "Verification script for custom contracts",
},
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},
},
{
Name: "import-multisig",
Usage: "import multisig contract",
UsageText: "import-multisig --path <path> --wif <wif> --min <n>" +
" [<pubkey1> [<pubkey2> [...]]]",
Action: importMultisig,
Flags: []cli.Flag{
walletPathFlag,
wifFlag,
cli.StringFlag{
Name: "name, n",
Usage: "Optional account name",
},
cli.IntFlag{
Name: "min, m",
Usage: "Minimal number of signatures",
},
},
},
{
Name: "remove",
Usage: "remove an account from the wallet",
UsageText: "remove --path <path> [--force] <addr>",
Action: removeAccount,
Flags: []cli.Flag{
walletPathFlag,
forceFlag,
},
},
{
Name: "multisig",
Usage: "work with multisig address",
Subcommands: newMultisigCommands(),
},
{
Name: "nep5",
Usage: "work with NEP5 contracts",
Subcommands: newNEP5Commands(),
},
},
}}
}
func claimGas(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
addrFlag := ctx.Generic("address").(*flags.Address)
if !addrFlag.IsSet {
return cli.NewExitError("address was not provided", 1)
}
scriptHash := addrFlag.Uint160()
acc := wall.GetAccount(scriptHash)
if acc == nil {
return cli.NewExitError(fmt.Errorf("wallet contains no account for '%s'", addrFlag), 1)
}
pass, err := readPassword("Enter password > ")
if err != nil {
return cli.NewExitError(err, 1)
} else if err := acc.Decrypt(pass); err != nil {
return cli.NewExitError(err, 1)
}
gctx, cancel := getGoContext(ctx)
defer cancel()
c, err := client.New(gctx, ctx.String("rpc"), client.Options{})
if err != nil {
return cli.NewExitError(err, 1)
}
// Temporary.
neoHash, err := util.Uint160DecodeStringLE("3b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c")
if err != nil {
return cli.NewExitError(err, 1)
}
hash, err := c.TransferNEP5(acc, scriptHash, neoHash, 0, 0)
if err != nil {
return cli.NewExitError(err, 1)
}
fmt.Println(hash.StringLE())
return nil
}
func addAccount(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
if err := createAccount(ctx, wall); err != nil {
return cli.NewExitError(err, 1)
}
return nil
}
func exportKeys(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
if err != nil {
return cli.NewExitError(err, 1)
}
var addr string
decrypt := ctx.Bool("decrypt")
if ctx.NArg() == 0 && decrypt {
return cli.NewExitError(errors.New("address must be provided if '--decrypt' flag is used"), 1)
} else if ctx.NArg() > 0 {
// check address format just to catch possible typos
addr = ctx.Args().First()
_, err := address.StringToUint160(addr)
if err != nil {
return cli.NewExitError(fmt.Errorf("can't parse address: %v", err), 1)
}
}
var wifs []string
loop:
for _, a := range wall.Accounts {
if addr != "" && a.Address != addr {
continue
}
for i := range wifs {
if a.EncryptedWIF == wifs[i] {
continue loop
}
}
wifs = append(wifs, a.EncryptedWIF)
}
for _, wif := range wifs {
if decrypt {
pass, err := readPassword("Enter password > ")
if err != nil {
return cli.NewExitError(err, 1)
}
pk, err := keys.NEP2Decrypt(wif, pass)
if err != nil {
return cli.NewExitError(err, 1)
}
wif = pk.WIF()
}
fmt.Println(wif)
}
return nil
}
func importMultisig(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
m := ctx.Int("min")
if ctx.NArg() < m {
return cli.NewExitError(errors.New("insufficient number of public keys"), 1)
}
args := []string(ctx.Args())
pubs := make([]*keys.PublicKey, len(args))
for i := range args {
pubs[i], err = keys.NewPublicKeyFromString(args[i])
if err != nil {
return cli.NewExitError(fmt.Errorf("can't decode public key %d: %v", i, err), 1)
}
}
acc, err := newAccountFromWIF(ctx.String("wif"))
if err != nil {
return cli.NewExitError(err, 1)
}
if err := acc.ConvertMultisig(m, pubs); err != nil {
return cli.NewExitError(err, 1)
}
if err := addAccountAndSave(wall, acc); err != nil {
return cli.NewExitError(err, 1)
}
return nil
}
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func importWallet(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
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if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
acc, err := newAccountFromWIF(ctx.String("wif"))
if err != nil {
return cli.NewExitError(err, 1)
}
if ctrFlag := ctx.String("contract"); ctrFlag != "" {
ctr, err := hex.DecodeString(ctrFlag)
if err != nil {
return cli.NewExitError("invalid contract", 1)
}
acc.Contract.Script = ctr
}
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acc.Label = ctx.String("name")
if err := addAccountAndSave(wall, acc); err != nil {
return cli.NewExitError(err, 1)
}
return nil
}
func removeAccount(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
addrArg := ctx.Args().First()
addr, err := address.StringToUint160(addrArg)
if err != nil {
return cli.NewExitError("valid address must be provided", 1)
}
acc := wall.GetAccount(addr)
if acc == nil {
return cli.NewExitError("account wasn't found", 1)
}
if !ctx.Bool("force") {
fmt.Printf("Account %s will be removed. This action is irreversible.\n", addrArg)
if ok := askForConsent(); !ok {
return nil
}
}
if err := wall.RemoveAccount(acc.Address); err != nil {
return cli.NewExitError(fmt.Errorf("error on remove: %v", err), 1)
} else if err := wall.Save(); err != nil {
return cli.NewExitError(fmt.Errorf("error while saving wallet: %v", err), 1)
}
return nil
}
func askForConsent() bool {
fmt.Print("Are you sure? [y/N]: ")
reader := bufio.NewReader(os.Stdin)
response, err := reader.ReadString('\n')
if err == nil {
response = strings.ToLower(strings.TrimSpace(response))
if response == "y" || response == "yes" {
return true
}
}
fmt.Println("Cancelled.")
return false
}
func getGoContext(ctx *cli.Context) (context.Context, func()) {
if dur := ctx.Duration("timeout"); dur != 0 {
return context.WithTimeout(context.Background(), dur)
}
return context.Background(), func() {}
}
func dumpWallet(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("path"))
if err != nil {
return cli.NewExitError(err, 1)
}
if ctx.Bool("decrypt") {
pass, err := readPassword("Enter wallet password > ")
if err != nil {
return cli.NewExitError(err, 1)
}
for i := range wall.Accounts {
// Just testing the decryption here.
err := wall.Accounts[i].Decrypt(pass)
if err != nil {
return cli.NewExitError(err, 1)
}
}
}
fmtPrintWallet(wall)
return nil
}
func createWallet(ctx *cli.Context) error {
path := ctx.String("path")
if len(path) == 0 {
return cli.NewExitError(errNoPath, 1)
}
wall, err := wallet.NewWallet(path)
if err != nil {
return cli.NewExitError(err, 1)
}
if err := wall.Save(); err != nil {
return cli.NewExitError(err, 1)
}
if ctx.Bool("account") {
if err := createAccount(ctx, wall); err != nil {
return cli.NewExitError(err, 1)
}
}
fmtPrintWallet(wall)
fmt.Printf("wallet successfully created, file location is %s\n", wall.Path())
return nil
}
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func readAccountInfo() (string, string, error) {
buf := bufio.NewReader(os.Stdin)
fmt.Print("Enter the name of the account > ")
rawName, _ := buf.ReadBytes('\n')
phrase, err := readPassword("Enter passphrase > ")
if err != nil {
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return "", "", err
}
phraseCheck, err := readPassword("Confirm passphrase > ")
if err != nil {
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return "", "", err
}
if phrase != phraseCheck {
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return "", "", errPhraseMismatch
}
name := strings.TrimRight(string(rawName), "\n")
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return name, phrase, nil
}
func createAccount(ctx *cli.Context, wall *wallet.Wallet) error {
name, phrase, err := readAccountInfo()
if err != nil {
return err
}
return wall.CreateAccount(name, phrase)
}
func openWallet(path string) (*wallet.Wallet, error) {
if len(path) == 0 {
return nil, errNoPath
}
return wallet.NewWalletFromFile(path)
}
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func newAccountFromWIF(wif string) (*wallet.Account, error) {
// note: NEP2 strings always have length of 58 even though
// base58 strings can have different lengths even if slice lengths are equal
if len(wif) == 58 {
pass, err := readPassword("Enter password > ")
if err != nil {
return nil, err
}
return wallet.NewAccountFromEncryptedWIF(wif, pass)
}
acc, err := wallet.NewAccountFromWIF(wif)
if err != nil {
return nil, err
}
fmt.Println("Provided WIF was unencrypted. Wallet can contain only encrypted keys.")
name, pass, err := readAccountInfo()
if err != nil {
return nil, err
}
acc.Label = name
if err := acc.Encrypt(pass); err != nil {
return nil, err
}
return acc, nil
}
func addAccountAndSave(w *wallet.Wallet, acc *wallet.Account) error {
for i := range w.Accounts {
if w.Accounts[i].Address == acc.Address {
return fmt.Errorf("address '%s' is already in wallet", acc.Address)
}
}
w.AddAccount(acc)
return w.Save()
}
func readPassword(prompt string) (string, error) {
fmt.Print(prompt)
rawPass, err := terminal.ReadPassword(syscall.Stdin)
fmt.Println()
if err != nil {
return "", err
}
return strings.TrimRight(string(rawPass), "\n"), nil
}
func fmtPrintWallet(wall *wallet.Wallet) {
b, _ := wall.JSON()
fmt.Println("")
fmt.Println(string(b))
fmt.Println("")
}