neoneo-go/cli/wallet/nep5.go

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package wallet
import (
"encoding/json"
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"errors"
"fmt"
"io/ioutil"
"strings"
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"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/options"
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"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/smartcontract/context"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/urfave/cli"
)
// validUntilBlockIncrement is the number of extra blocks to add to an exported transaction
const validUntilBlockIncrement = 50
var (
neoToken = wallet.NewToken(client.NeoContractHash, "NEO", "neo", 0)
gasToken = wallet.NewToken(client.GasContractHash, "GAS", "gas", 8)
)
var (
tokenFlag = cli.StringFlag{
Name: "token",
Usage: "Token to use",
}
gasFlag = flags.Fixed8Flag{
Name: "gas",
Usage: "Amount of GAS to attach to a tx",
}
)
func newNEP5Commands() []cli.Command {
balanceFlags := []cli.Flag{
walletPathFlag,
tokenFlag,
cli.StringFlag{
Name: "addr",
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> --addr <addr> [--token <hash-or-name>]",
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Action: getNEP5Balance,
Flags: balanceFlags,
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},
{
Name: "import",
Usage: "import NEP5 token to a wallet",
UsageText: "import --wallet <path> --rpc-endpoint <node> --timeout <time> --token <hash>",
Action: importNEP5Token,
Flags: importFlags,
},
{
Name: "info",
Usage: "print imported NEP5 token info",
UsageText: "print --wallet <path> [--token <hash-or-name>]",
Action: printNEP5Info,
Flags: []cli.Flag{
walletPathFlag,
cli.StringFlag{
Name: "token",
Usage: "Token name or hash",
},
},
},
{
Name: "remove",
Usage: "remove NEP5 token from the wallet",
UsageText: "remove --wallet <path> <hash-or-name>",
Action: removeNEP5Token,
Flags: []cli.Flag{
walletPathFlag,
cli.StringFlag{
Name: "token",
Usage: "Token name or hash",
},
forceFlag,
},
},
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{
Name: "transfer",
Usage: "transfer NEP5 tokens",
UsageText: "transfer --wallet <path> --rpc-endpoint <node> --timeout <time> --from <addr> --to <addr> --token <hash> --amount string",
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Action: transferNEP5,
Flags: transferFlags,
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},
{
Name: "multitransfer",
Usage: "transfer NEP5 tokens to multiple recipients",
UsageText: `multitransfer --wallet <path> --rpc-endpoint <node> --timeout <time> --from <addr>` +
` <token1>:<addr1>:<amount1> [<token2>:<addr2>:<amount2> [...]]`,
Action: multiTransferNEP5,
Flags: multiTransferFlags,
},
}
}
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func getNEP5Balance(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()
addr := ctx.String("addr")
addrHash, err := address.StringToUint160(addr)
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid address: %w", err), 1)
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}
acc := wall.GetAccount(addrHash)
if acc == nil {
return cli.NewExitError(fmt.Errorf("can't find account for the address: %s", addr), 1)
}
gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
c, err := options.GetRPCClient(gctx, ctx)
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if err != nil {
return err
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}
var token *wallet.Token
name := ctx.String("token")
if name != "" {
token, err = getMatchingToken(ctx, wall, name)
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if err != nil {
token, err = getMatchingTokenRPC(ctx, c, addrHash, name)
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if err != nil {
return cli.NewExitError(err, 1)
}
}
}
balances, err := c.GetNEP5Balances(addrHash)
if err != nil {
return cli.NewExitError(err, 1)
}
for i := range balances.Balances {
asset := balances.Balances[i].Asset
if name != "" && !token.Hash.Equals(asset) {
continue
}
fmt.Fprintf(ctx.App.Writer, "TokenHash: %s\n", asset.StringLE())
fmt.Fprintf(ctx.App.Writer, "\tAmount : %s\n", balances.Balances[i].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) {
switch strings.ToLower(name) {
case "neo":
return neoToken, nil
case "gas":
return gasToken, nil
}
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) {
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bs, err := c.GetNEP5Balances(addr)
if err != nil {
return nil, err
}
get := func(i int) *wallet.Token {
t, _ := c.NEP5TokenInfo(bs.Balances[i].Asset)
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.Name == name || t.Symbol == name || t.Address() == name || t.Hash.StringLE() == 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 importNEP5Token(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 {
return err
}
tok, err := c.NEP5TokenInfo(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 printNEP5Info(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 removeNEP5Token(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
defer wall.Close()
name := ctx.Args().First()
if name == "" {
return cli.NewExitError("token must be specified", 1)
}
token, err := getMatchingToken(ctx, wall, name)
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 multiTransferNEP5(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)
from := fromFlag.Uint160()
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 {
return err
}
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, ctx.String("token"))
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)
}
amount, err := util.FixedNFromString(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,
Amount: amount,
})
}
return signAndSendTransfer(ctx, c, acc, recipients)
}
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func transferNEP5(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)
from := fromFlag.Uint160()
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 {
return err
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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(err, 1)
}
}
amount, err := util.FixedNFromString(ctx.String("amount"), int(token.Decimals))
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,
Amount: amount,
}})
}
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.CreateNEP5MultiTransferTx(acc, int64(gas), recipients...)
if err != nil {
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return cli.NewExitError(err, 1)
}
if outFile := ctx.String("out"); outFile != "" {
// avoid fast transaction expiration
tx.ValidUntilBlock += validUntilBlockIncrement
priv := acc.PrivateKey()
pub := priv.PublicKey()
sign := priv.Sign(tx.GetSignedPart())
scCtx := context.NewParameterContext("Neo.Core.ContractTransaction", tx)
if err := scCtx.AddSignature(acc.Contract, pub, sign); err != nil {
return cli.NewExitError(fmt.Errorf("can't add signature: %w", err), 1)
} else if data, err := json.Marshal(scCtx); err != nil {
return cli.NewExitError(fmt.Errorf("can't marshal tx to JSON: %w", err), 1)
} else if err := ioutil.WriteFile(outFile, data, 0644); err != nil {
return cli.NewExitError(fmt.Errorf("can't write tx to file: %w", 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
}