neo-go/cli/wallet/nep17.go

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package wallet
import (
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"errors"
"fmt"
"math/big"
"strings"
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"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/options"
"github.com/nspcc-dev/neo-go/cli/paramcontext"
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"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
"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"
)
var (
tokenFlag = cli.StringFlag{
Name: "token",
Usage: "Token to use (hash or name (for NEO/GAS or imported tokens))",
}
gasFlag = flags.Fixed8Flag{
Name: "gas",
Usage: "Amount of GAS to attach to a tx",
}
)
func newNEP17Commands() []cli.Command {
balanceFlags := []cli.Flag{
walletPathFlag,
tokenFlag,
cli.StringFlag{
Name: "address, a",
Usage: "Address to use",
},
}
balanceFlags = append(balanceFlags, options.RPC...)
importFlags := []cli.Flag{
walletPathFlag,
cli.StringFlag{
Name: "token",
Usage: "Token contract hash in LE",
},
}
importFlags = append(importFlags, options.RPC...)
transferFlags := []cli.Flag{
walletPathFlag,
outFlag,
fromAddrFlag,
toAddrFlag,
tokenFlag,
gasFlag,
cli.StringFlag{
Name: "amount",
Usage: "Amount of asset to send",
},
}
transferFlags = append(transferFlags, options.RPC...)
multiTransferFlags := []cli.Flag{
walletPathFlag,
outFlag,
fromAddrFlag,
gasFlag,
}
multiTransferFlags = append(multiTransferFlags, options.RPC...)
return []cli.Command{
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{
Name: "balance",
Usage: "get address balance",
UsageText: "balance --wallet <path> --rpc-endpoint <node> [--timeout <time>] [--address <address>] [--token <hash-or-name>]",
Action: getNEP17Balance,
Flags: balanceFlags,
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},
{
Name: "import",
Usage: "import NEP17 token to a wallet",
UsageText: "import --wallet <path> --rpc-endpoint <node> --timeout <time> --token <hash>",
Action: importNEP17Token,
Flags: importFlags,
},
{
Name: "info",
Usage: "print imported NEP17 token info",
UsageText: "print --wallet <path> [--token <hash-or-name>]",
Action: printNEP17Info,
Flags: []cli.Flag{
walletPathFlag,
cli.StringFlag{
Name: "token",
Usage: "Token name or hash",
},
},
},
{
Name: "remove",
Usage: "remove NEP17 token from the wallet",
UsageText: "remove --wallet <path> --token <hash-or-name>",
Action: removeNEP17Token,
Flags: []cli.Flag{
walletPathFlag,
cli.StringFlag{
Name: "token",
Usage: "Token name or hash",
},
forceFlag,
},
},
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{
Name: "transfer",
Usage: "transfer NEP17 tokens",
UsageText: "transfer --wallet <path> --rpc-endpoint <node> --timeout <time> --from <addr> --to <addr> --token <hash> --amount string",
Action: transferNEP17,
Flags: transferFlags,
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},
{
Name: "multitransfer",
Usage: "transfer NEP17 tokens to multiple recipients",
UsageText: `multitransfer --wallet <path> --rpc-endpoint <node> --timeout <time> --from <addr>` +
` <token1>:<addr1>:<amount1> [<token2>:<addr2>:<amount2> [...]]`,
Action: multiTransferNEP17,
Flags: multiTransferFlags,
},
}
}
func getNEP17Balance(ctx *cli.Context) error {
var accounts []*wallet.Account
wall, err := openWallet(ctx.String("wallet"))
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if err != nil {
return cli.NewExitError(fmt.Errorf("bad wallet: %w", err), 1)
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}
defer wall.Close()
addr := ctx.String("address")
if addr != "" {
addrHash, err := address.StringToUint160(addr)
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid address: %w", err), 1)
}
acc := wall.GetAccount(addrHash)
if acc == nil {
return cli.NewExitError(fmt.Errorf("can't find account for the address: %s", addr), 1)
}
accounts = append(accounts, acc)
} else {
if len(wall.Accounts) == 0 {
return cli.NewExitError(errors.New("no accounts in the wallet"), 1)
}
accounts = wall.Accounts
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}
gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
c, err := options.GetRPCClient(gctx, ctx)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
name := ctx.String("token")
for k, acc := range accounts {
addrHash, err := address.StringToUint160(acc.Address)
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if err != nil {
return cli.NewExitError(fmt.Errorf("invalid account address: %w", err), 1)
}
balances, err := c.GetNEP17Balances(addrHash)
if err != nil {
return cli.NewExitError(err, 1)
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}
if k != 0 {
fmt.Fprintln(ctx.App.Writer)
}
fmt.Fprintf(ctx.App.Writer, "Account %s\n", acc.Address)
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for i := range balances.Balances {
var tokenName, tokenSymbol string
tokenDecimals := 0
asset := balances.Balances[i].Asset
token, err := getMatchingToken(ctx, wall, asset.StringLE())
if err != nil {
token, err = c.NEP17TokenInfo(asset)
}
if err == nil {
if name != "" && !(token.Name == name || token.Symbol == name || token.Address() == name || token.Hash.StringLE() == name) {
continue
}
tokenName = token.Name
tokenSymbol = token.Symbol
tokenDecimals = int(token.Decimals)
} else {
if name != "" {
continue
}
tokenSymbol = "UNKNOWN"
}
fmt.Fprintf(ctx.App.Writer, "%s: %s (%s)\n", tokenSymbol, tokenName, asset.StringLE())
amount := balances.Balances[i].Amount
if tokenDecimals != 0 {
b, ok := new(big.Int).SetString(amount, 10)
if ok {
amount = fixedn.ToString(b, tokenDecimals)
}
}
fmt.Fprintf(ctx.App.Writer, "\tAmount : %s\n", amount)
fmt.Fprintf(ctx.App.Writer, "\tUpdated: %d\n", balances.Balances[i].LastUpdated)
}
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}
return nil
}
func getMatchingToken(ctx *cli.Context, w *wallet.Wallet, name string) (*wallet.Token, error) {
return getMatchingTokenAux(ctx, func(i int) *wallet.Token {
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return w.Extra.Tokens[i]
}, len(w.Extra.Tokens), name)
}
func getMatchingTokenRPC(ctx *cli.Context, c *client.Client, addr util.Uint160, name string) (*wallet.Token, error) {
bs, err := c.GetNEP17Balances(addr)
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if err != nil {
return nil, err
}
get := func(i int) *wallet.Token {
t, _ := c.NEP17TokenInfo(bs.Balances[i].Asset)
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return t
}
return getMatchingTokenAux(ctx, get, len(bs.Balances), name)
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}
func getMatchingTokenAux(ctx *cli.Context, get func(i int) *wallet.Token, n int, name string) (*wallet.Token, error) {
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var token *wallet.Token
var count int
for i := 0; i < n; i++ {
t := get(i)
if t != nil && (t.Hash.StringLE() == name || t.Address() == name || t.Symbol == name || t.Name == name) {
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if count == 1 {
printTokenInfo(ctx, token)
printTokenInfo(ctx, t)
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return nil, errors.New("multiple matching tokens found")
}
count++
token = t
}
}
if count == 0 {
return nil, errors.New("token was not found")
}
return token, nil
}
func importNEP17Token(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
tokenHash, err := util.Uint160DecodeStringLE(ctx.String("token"))
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid token contract hash: %w", err), 1)
}
for _, t := range wall.Extra.Tokens {
if t.Hash.Equals(tokenHash) {
printTokenInfo(ctx, t)
return cli.NewExitError("token already exists", 1)
}
}
gctx, cancel := options.GetTimeoutContext(ctx)
defer cancel()
c, err := options.GetRPCClient(gctx, ctx)
if err != nil {
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return cli.NewExitError(err, 1)
}
tok, err := c.NEP17TokenInfo(tokenHash)
if err != nil {
return cli.NewExitError(fmt.Errorf("can't receive token info: %w", err), 1)
}
wall.AddToken(tok)
if err := wall.Save(); err != nil {
return cli.NewExitError(err, 1)
}
printTokenInfo(ctx, tok)
return nil
}
func printTokenInfo(ctx *cli.Context, tok *wallet.Token) {
w := ctx.App.Writer
fmt.Fprintf(w, "Name:\t%s\n", tok.Name)
fmt.Fprintf(w, "Symbol:\t%s\n", tok.Symbol)
fmt.Fprintf(w, "Hash:\t%s\n", tok.Hash.StringLE())
fmt.Fprintf(w, "Decimals: %d\n", tok.Decimals)
fmt.Fprintf(w, "Address: %s\n", tok.Address())
}
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func printNEP17Info(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
if name := ctx.String("token"); name != "" {
token, err := getMatchingToken(ctx, wall, name)
if err != nil {
return cli.NewExitError(err, 1)
}
printTokenInfo(ctx, token)
return nil
}
for i, t := range wall.Extra.Tokens {
if i > 0 {
fmt.Fprintln(ctx.App.Writer)
}
printTokenInfo(ctx, t)
}
return nil
}
func removeNEP17Token(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
token, err := getMatchingToken(ctx, wall, ctx.String("token"))
if err != nil {
return cli.NewExitError(err, 1)
}
if !ctx.Bool("force") {
if ok := askForConsent(ctx.App.Writer); !ok {
return nil
}
}
if err := wall.RemoveToken(token.Hash); err != nil {
return cli.NewExitError(fmt.Errorf("can't remove token: %w", err), 1)
} else if err := wall.Save(); err != nil {
return cli.NewExitError(fmt.Errorf("error while saving wallet: %w", err), 1)
}
return nil
}
func multiTransferNEP17(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
fromFlag := ctx.Generic("from").(*flags.Address)
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from, err := getDefaultAddress(fromFlag, wall)
if err != nil {
return cli.NewExitError(err, 1)
}
acc, err := getDecryptedAccount(ctx, wall, from)
if err != nil {
return cli.NewExitError(err, 1)
}
gctx, cancel := options.GetTimeoutContext(ctx)
defer cancel()
c, err := options.GetRPCClient(gctx, ctx)
if err != nil {
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return cli.NewExitError(err, 1)
}
if ctx.NArg() == 0 {
return cli.NewExitError("empty recipients list", 1)
}
var recipients []client.TransferTarget
cache := make(map[string]*wallet.Token)
for i := 0; i < ctx.NArg(); i++ {
arg := ctx.Args().Get(i)
ss := strings.SplitN(arg, ":", 3)
if len(ss) != 3 {
return cli.NewExitError("send format must be '<token>:<addr>:<amount>", 1)
}
token, ok := cache[ss[0]]
if !ok {
token, err = getMatchingToken(ctx, wall, ss[0])
if err != nil {
fmt.Fprintln(ctx.App.ErrWriter, "Can't find matching token in the wallet. Querying RPC-node for balances.")
token, err = getMatchingTokenRPC(ctx, c, from, ss[0])
if err != nil {
return cli.NewExitError(err, 1)
}
}
}
cache[ss[0]] = token
addr, err := address.StringToUint160(ss[1])
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid address: '%s'", ss[1]), 1)
}
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amount, err := fixedn.FromString(ss[2], int(token.Decimals))
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid amount: %w", err), 1)
}
recipients = append(recipients, client.TransferTarget{
Token: token.Hash,
Address: addr,
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Amount: amount.Int64(),
})
}
return signAndSendTransfer(ctx, c, acc, recipients)
}
func transferNEP17(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
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if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
fromFlag := ctx.Generic("from").(*flags.Address)
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from, err := getDefaultAddress(fromFlag, wall)
if err != nil {
return cli.NewExitError(err, 1)
}
acc, err := getDecryptedAccount(ctx, wall, from)
if err != nil {
return cli.NewExitError(err, 1)
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}
gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
c, err := options.GetRPCClient(gctx, ctx)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
toFlag := ctx.Generic("to").(*flags.Address)
to := toFlag.Uint160()
token, err := getMatchingToken(ctx, wall, ctx.String("token"))
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if err != nil {
fmt.Fprintln(ctx.App.ErrWriter, "Can't find matching token in the wallet. Querying RPC-node for balances.")
token, err = getMatchingTokenRPC(ctx, c, from, ctx.String("token"))
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if err != nil {
return cli.NewExitError(fmt.Errorf("failed to get matching token: %w", err), 1)
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}
}
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amount, err := fixedn.FromString(ctx.String("amount"), int(token.Decimals))
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if err != nil {
return cli.NewExitError(fmt.Errorf("invalid amount: %w", err), 1)
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}
return signAndSendTransfer(ctx, c, acc, []client.TransferTarget{{
Token: token.Hash,
Address: to,
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Amount: amount.Int64(),
}})
}
func signAndSendTransfer(ctx *cli.Context, c *client.Client, acc *wallet.Account, recipients []client.TransferTarget) error {
gas := flags.Fixed8FromContext(ctx, "gas")
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tx, err := c.CreateNEP17MultiTransferTx(acc, int64(gas), recipients, nil)
if err != nil {
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return cli.NewExitError(err, 1)
}
if outFile := ctx.String("out"); outFile != "" {
if err := paramcontext.InitAndSave(tx, acc, outFile); err != nil {
return cli.NewExitError(err, 1)
}
} else {
_ = acc.SignTx(tx)
res, err := c.SendRawTransaction(tx)
if err != nil {
return cli.NewExitError(err, 1)
}
fmt.Fprintln(ctx.App.Writer, res.StringLE())
return nil
}
fmt.Fprintln(ctx.App.Writer, tx.Hash().StringLE())
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return nil
}
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func getDefaultAddress(fromFlag *flags.Address, w *wallet.Wallet) (util.Uint160, error) {
if fromFlag.IsSet {
return fromFlag.Uint160(), nil
}
addr := w.GetChangeAddress()
if addr.Equals(util.Uint160{}) {
return util.Uint160{}, errors.New("can't get default address")
}
return addr, nil
}