forked from TrueCloudLab/neoneo-go
0092330fe1
1. Keep initDone check only for the places where cache is directly accessed. We don't need to check it in other places, otherwise we have a mess of duplicating checks. 2. Fix bug in code related to block deserialisation. There's no magic, so checking that initialisation is done is not enough for proper block deserialisation. We need to manually fill StateRootEnabled field. 3. Since transaction doesn't need network magic to compute its hash, we don't need to perform Client initialisation before transaction-related requests. 4. Check that cache is initialised before accessing network magic. 5. Refactor the way Policy contract hash is fetched for Client requests. We don't really need Client initialisation for that, it's OK to fetch Policy hash on-the-fly.
683 lines
20 KiB
Go
683 lines
20 KiB
Go
package wallet
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import (
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"encoding/hex"
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"errors"
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"fmt"
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"math/big"
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"strings"
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"github.com/nspcc-dev/neo-go/cli/cmdargs"
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"github.com/nspcc-dev/neo-go/cli/flags"
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"github.com/nspcc-dev/neo-go/cli/input"
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"github.com/nspcc-dev/neo-go/cli/options"
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"github.com/nspcc-dev/neo-go/cli/paramcontext"
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"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
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"github.com/nspcc-dev/neo-go/pkg/encoding/address"
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"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
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"github.com/nspcc-dev/neo-go/pkg/rpc/client"
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"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"github.com/urfave/cli"
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)
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var (
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tokenFlag = cli.StringFlag{
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Name: "token",
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Usage: "Token to use (hash or name (for NEO/GAS or imported tokens))",
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}
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gasFlag = flags.Fixed8Flag{
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Name: "gas, g",
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Usage: "network fee to add to the transaction (prioritizing it)",
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}
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sysGasFlag = flags.Fixed8Flag{
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Name: "sysgas, e",
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Usage: "system fee to add to transaction (compensating for execution)",
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}
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baseBalanceFlags = []cli.Flag{
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walletPathFlag,
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tokenFlag,
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flags.AddressFlag{
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Name: "address, a",
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Usage: "Address to use",
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},
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}
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importFlags = append([]cli.Flag{
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walletPathFlag,
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flags.AddressFlag{
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Name: "token",
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Usage: "Token contract address or hash in LE",
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},
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}, options.RPC...)
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baseTransferFlags = []cli.Flag{
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walletPathFlag,
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outFlag,
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fromAddrFlag,
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toAddrFlag,
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tokenFlag,
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gasFlag,
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sysGasFlag,
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forceFlag,
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cli.StringFlag{
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Name: "amount",
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Usage: "Amount of asset to send",
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},
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}
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multiTransferFlags = append([]cli.Flag{
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walletPathFlag,
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outFlag,
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fromAddrFlag,
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gasFlag,
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sysGasFlag,
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forceFlag,
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}, options.RPC...)
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)
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func newNEP17Commands() []cli.Command {
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balanceFlags := make([]cli.Flag, len(baseBalanceFlags))
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copy(balanceFlags, baseBalanceFlags)
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balanceFlags = append(balanceFlags, options.RPC...)
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transferFlags := make([]cli.Flag, len(baseTransferFlags))
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copy(transferFlags, baseTransferFlags)
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transferFlags = append(transferFlags, options.RPC...)
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return []cli.Command{
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{
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Name: "balance",
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Usage: "get address balance",
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UsageText: "balance --wallet <path> --rpc-endpoint <node> [--timeout <time>] [--address <address>] [--token <hash-or-name>]",
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Action: getNEP17Balance,
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Flags: balanceFlags,
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},
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{
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Name: "import",
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Usage: "import NEP-17 token to a wallet",
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UsageText: "import --wallet <path> --rpc-endpoint <node> --timeout <time> --token <hash>",
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Action: importNEP17Token,
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Flags: importFlags,
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},
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{
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Name: "info",
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Usage: "print imported NEP-17 token info",
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UsageText: "print --wallet <path> [--token <hash-or-name>]",
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Action: printNEP17Info,
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Flags: []cli.Flag{
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walletPathFlag,
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tokenFlag,
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},
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},
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{
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Name: "remove",
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Usage: "remove NEP-17 token from the wallet",
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UsageText: "remove --wallet <path> --token <hash-or-name>",
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Action: removeNEP17Token,
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Flags: []cli.Flag{
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walletPathFlag,
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tokenFlag,
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forceFlag,
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},
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},
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{
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Name: "transfer",
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Usage: "transfer NEP-17 tokens",
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UsageText: "transfer --wallet <path> --rpc-endpoint <node> --timeout <time> --from <addr> --to <addr> --token <hash-or-name> --amount string [data] [-- <cosigner1:Scope> [<cosigner2> [...]]]",
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Action: transferNEP17,
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Flags: transferFlags,
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Description: `Transfers specified NEP-17 token amount with optional 'data' parameter and cosigners
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list attached to the transfer. See 'contract testinvokefunction' documentation
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for the details about 'data' parameter and cosigners syntax. If no 'data' is
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given then default nil value will be used. If no cosigners are given then the
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sender with CalledByEntry scope will be used as the only signer.
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`,
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},
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{
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Name: "multitransfer",
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Usage: "transfer NEP-17 tokens to multiple recipients",
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UsageText: `multitransfer --wallet <path> --rpc-endpoint <node> --timeout <time> --from <addr>` +
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` <token1>:<addr1>:<amount1> [<token2>:<addr2>:<amount2> [...]] [-- <cosigner1:Scope> [<cosigner2> [...]]]`,
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Action: multiTransferNEP17,
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Flags: multiTransferFlags,
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},
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}
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}
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func getNEP17Balance(ctx *cli.Context) error {
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var accounts []*wallet.Account
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wall, err := readWallet(ctx.String("wallet"))
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if err != nil {
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return cli.NewExitError(fmt.Errorf("bad wallet: %w", err), 1)
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}
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defer wall.Close()
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addrFlag := ctx.Generic("address").(*flags.Address)
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if addrFlag.IsSet {
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addrHash := addrFlag.Uint160()
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acc := wall.GetAccount(addrHash)
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if acc == nil {
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return cli.NewExitError(fmt.Errorf("can't find account for the address: %s", address.Uint160ToString(addrHash)), 1)
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}
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accounts = append(accounts, acc)
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} else {
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if len(wall.Accounts) == 0 {
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return cli.NewExitError(errors.New("no accounts in the wallet"), 1)
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}
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accounts = wall.Accounts
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}
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gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
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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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}
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name := ctx.String("token")
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for k, acc := range accounts {
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addrHash, err := address.StringToUint160(acc.Address)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("invalid account address: %w", err), 1)
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}
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balances, err := c.GetNEP17Balances(addrHash)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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if k != 0 {
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fmt.Fprintln(ctx.App.Writer)
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}
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fmt.Fprintf(ctx.App.Writer, "Account %s\n", acc.Address)
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var tokenFound bool
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for i := range balances.Balances {
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var tokenName, tokenSymbol string
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tokenDecimals := 0
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asset := balances.Balances[i].Asset
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token, err := getMatchingToken(ctx, wall, asset.StringLE(), manifest.NEP17StandardName)
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if err != nil {
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token, err = c.NEP17TokenInfo(asset)
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}
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if err == nil {
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if name != "" && !(token.Name == name || token.Symbol == name || token.Address() == name || token.Hash.StringLE() == name) {
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continue
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}
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tokenName = token.Name
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tokenSymbol = token.Symbol
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tokenDecimals = int(token.Decimals)
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tokenFound = true
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} else {
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if name != "" {
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continue
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}
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tokenSymbol = "UNKNOWN"
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}
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printAssetBalance(ctx, asset, tokenName, tokenSymbol, tokenDecimals, balances.Balances[i])
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}
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if name == "" || tokenFound {
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continue
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}
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// Token was explicitly specified, but was not found among balances, thus either balance is 0
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// or the token doesn't exist. Try to find token by its address/hash/name/symbol and print zero
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// balance if found. Search into wallet first.
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token, err := getMatchingToken(ctx, wall, name, manifest.NEP17StandardName)
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if err != nil {
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// The wallet doesn't contain specified token, so try to ask chain.
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h, err := flags.ParseAddress(name)
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if err != nil {
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h, err = c.GetNativeContractHash(name)
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if err != nil {
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// Try to get native NEP17 with matching symbol.
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var gasSymbol, neoSymbol string
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gasSymbol, h, err = getNativeNEP17Symbol(c, nativenames.Gas)
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if err != nil {
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continue
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}
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if gasSymbol != name {
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neoSymbol, h, err = getNativeNEP17Symbol(c, nativenames.Neo)
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if err != nil {
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continue
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}
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if neoSymbol != name {
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continue
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}
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}
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}
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}
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token, err = c.NEP17TokenInfo(h)
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if err != nil {
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continue
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}
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}
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printAssetBalance(ctx, token.Hash, token.Name, token.Symbol, int(token.Decimals), result.NEP17Balance{
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Asset: token.Hash,
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Amount: "0",
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LastUpdated: 0,
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})
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}
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return nil
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}
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func printAssetBalance(ctx *cli.Context, asset util.Uint160, tokenName, tokenSymbol string, tokenDecimals int, balance result.NEP17Balance) {
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fmt.Fprintf(ctx.App.Writer, "%s: %s (%s)\n", tokenSymbol, tokenName, asset.StringLE())
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amount := balance.Amount
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if tokenDecimals != 0 {
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b, ok := new(big.Int).SetString(amount, 10)
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if ok {
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amount = fixedn.ToString(b, tokenDecimals)
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}
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}
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fmt.Fprintf(ctx.App.Writer, "\tAmount : %s\n", amount)
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fmt.Fprintf(ctx.App.Writer, "\tUpdated: %d\n", balance.LastUpdated)
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}
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func getNativeNEP17Symbol(c *client.Client, name string) (string, util.Uint160, error) {
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h, err := c.GetNativeContractHash(name)
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if err != nil {
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return "", util.Uint160{}, fmt.Errorf("failed to get native %s hash: %w", name, err)
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}
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symbol, err := c.NEP17Symbol(h)
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if err != nil {
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return "", util.Uint160{}, fmt.Errorf("failed to get native %s symbol: %w", name, err)
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}
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return symbol, h, nil
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}
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func getMatchingToken(ctx *cli.Context, w *wallet.Wallet, name string, standard string) (*wallet.Token, error) {
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return getMatchingTokenAux(ctx, func(i int) *wallet.Token {
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return w.Extra.Tokens[i]
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}, len(w.Extra.Tokens), name, standard)
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}
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func getMatchingTokenRPC(ctx *cli.Context, c *client.Client, addr util.Uint160, name string, standard string) (*wallet.Token, error) {
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switch standard {
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case manifest.NEP17StandardName:
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bs, err := c.GetNEP17Balances(addr)
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if err != nil {
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return nil, err
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}
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get := func(i int) *wallet.Token {
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t, _ := c.NEP17TokenInfo(bs.Balances[i].Asset)
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return t
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}
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return getMatchingTokenAux(ctx, get, len(bs.Balances), name, standard)
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case manifest.NEP11StandardName:
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tokenHash, err := flags.ParseAddress(name)
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if err != nil {
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return nil, fmt.Errorf("valid token adress or hash in LE should be specified for %s RPC-node request: %s", standard, err.Error())
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}
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get := func(i int) *wallet.Token {
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t, _ := c.NEP11TokenInfo(tokenHash)
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return t
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}
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return getMatchingTokenAux(ctx, get, 1, name, standard)
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default:
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return nil, fmt.Errorf("unsupported %s token", standard)
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}
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}
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func getMatchingTokenAux(ctx *cli.Context, get func(i int) *wallet.Token, n int, name string, standard string) (*wallet.Token, error) {
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var token *wallet.Token
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var count int
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for i := 0; i < n; i++ {
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t := get(i)
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if t != nil && (t.Hash.StringLE() == name || t.Address() == name || t.Symbol == name || t.Name == name) && t.Standard == standard {
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if count == 1 {
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printTokenInfo(ctx, token)
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printTokenInfo(ctx, t)
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return nil, fmt.Errorf("multiple matching %s tokens found", standard)
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}
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count++
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token = t
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}
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}
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if count == 0 {
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return nil, fmt.Errorf("%s token was not found", standard)
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}
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return token, nil
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}
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func importNEP17Token(ctx *cli.Context) error {
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return importNEPToken(ctx, manifest.NEP17StandardName)
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}
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func importNEPToken(ctx *cli.Context, standard string) error {
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wall, err := openWallet(ctx.String("wallet"))
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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defer wall.Close()
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tokenHashFlag := ctx.Generic("token").(*flags.Address)
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if !tokenHashFlag.IsSet {
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return cli.NewExitError("token contract hash was not set", 1)
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}
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tokenHash := tokenHashFlag.Uint160()
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for _, t := range wall.Extra.Tokens {
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if t.Hash.Equals(tokenHash) && t.Standard == standard {
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printTokenInfo(ctx, t)
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return cli.NewExitError(fmt.Errorf("%s token already exists", standard), 1)
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}
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}
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gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
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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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}
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var tok *wallet.Token
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switch standard {
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case manifest.NEP17StandardName:
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tok, err = c.NEP17TokenInfo(tokenHash)
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case manifest.NEP11StandardName:
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tok, err = c.NEP11TokenInfo(tokenHash)
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default:
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return cli.NewExitError(fmt.Sprintf("unsupported token standard: %s", standard), 1)
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}
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if err != nil {
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return cli.NewExitError(fmt.Errorf("can't receive token info: %w", err), 1)
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}
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wall.AddToken(tok)
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if err := wall.Save(); err != nil {
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return cli.NewExitError(err, 1)
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}
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printTokenInfo(ctx, tok)
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return nil
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}
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func printTokenInfo(ctx *cli.Context, tok *wallet.Token) {
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w := ctx.App.Writer
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fmt.Fprintf(w, "Name:\t%s\n", tok.Name)
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fmt.Fprintf(w, "Symbol:\t%s\n", tok.Symbol)
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fmt.Fprintf(w, "Hash:\t%s\n", tok.Hash.StringLE())
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fmt.Fprintf(w, "Decimals: %d\n", tok.Decimals)
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fmt.Fprintf(w, "Address: %s\n", tok.Address())
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fmt.Fprintf(w, "Standard:\t%s\n", tok.Standard)
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}
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func printNEP17Info(ctx *cli.Context) error {
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return printNEPInfo(ctx, manifest.NEP17StandardName)
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}
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func printNEPInfo(ctx *cli.Context, standard string) error {
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wall, err := readWallet(ctx.String("wallet"))
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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defer wall.Close()
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if name := ctx.String("token"); name != "" {
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token, err := getMatchingToken(ctx, wall, name, standard)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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printTokenInfo(ctx, token)
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return nil
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}
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var count int
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for _, t := range wall.Extra.Tokens {
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if count > 0 {
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fmt.Fprintln(ctx.App.Writer)
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}
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if t.Standard == standard {
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printTokenInfo(ctx, t)
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count++
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}
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}
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return nil
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}
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func removeNEP17Token(ctx *cli.Context) error {
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return removeNEPToken(ctx, manifest.NEP17StandardName)
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}
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func removeNEPToken(ctx *cli.Context, standard string) error {
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wall, err := openWallet(ctx.String("wallet"))
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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defer wall.Close()
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token, err := getMatchingToken(ctx, wall, ctx.String("token"), standard)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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if !ctx.Bool("force") {
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if ok := askForConsent(ctx.App.Writer); !ok {
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return nil
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}
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}
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if err := wall.RemoveToken(token.Hash); err != nil {
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return cli.NewExitError(fmt.Errorf("can't remove token: %w", err), 1)
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} else if err := wall.Save(); err != nil {
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return cli.NewExitError(fmt.Errorf("error while saving wallet: %w", err), 1)
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}
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return nil
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}
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func multiTransferNEP17(ctx *cli.Context) error {
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wall, err := readWallet(ctx.String("wallet"))
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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defer wall.Close()
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fromFlag := ctx.Generic("from").(*flags.Address)
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from, err := getDefaultAddress(fromFlag, wall)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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acc, err := getDecryptedAccount(ctx, wall, from)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
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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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}
|
|
|
|
if ctx.NArg() == 0 {
|
|
return cli.NewExitError("empty recipients list", 1)
|
|
}
|
|
var (
|
|
recipients []client.TransferTarget
|
|
cosignersOffset = ctx.NArg()
|
|
)
|
|
cache := make(map[string]*wallet.Token)
|
|
for i := 0; i < ctx.NArg(); i++ {
|
|
arg := ctx.Args().Get(i)
|
|
if arg == cmdargs.CosignersSeparator {
|
|
cosignersOffset = i + 1
|
|
break
|
|
}
|
|
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], manifest.NEP17StandardName)
|
|
if err != nil {
|
|
token, err = getMatchingTokenRPC(ctx, c, from, ss[0], manifest.NEP17StandardName)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("can't fetch matching token from RPC-node: %w", 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 := 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,
|
|
Amount: amount.Int64(),
|
|
Data: nil,
|
|
})
|
|
}
|
|
|
|
cosigners, extErr := cmdargs.GetSignersFromContext(ctx, cosignersOffset)
|
|
if extErr != nil {
|
|
return extErr
|
|
}
|
|
cosignersAccounts, err := cmdargs.GetSignersAccounts(wall, cosigners)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("failed to create NEP-17 multitransfer transaction: %w", err), 1)
|
|
}
|
|
|
|
return signAndSendNEP17Transfer(ctx, c, acc, recipients, cosignersAccounts)
|
|
}
|
|
|
|
func transferNEP17(ctx *cli.Context) error {
|
|
return transferNEP(ctx, manifest.NEP17StandardName)
|
|
}
|
|
|
|
func transferNEP(ctx *cli.Context, standard string) error {
|
|
wall, err := readWallet(ctx.String("wallet"))
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
defer wall.Close()
|
|
|
|
fromFlag := ctx.Generic("from").(*flags.Address)
|
|
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 {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
|
|
toFlag := ctx.Generic("to").(*flags.Address)
|
|
if !toFlag.IsSet {
|
|
return cli.NewExitError(errors.New("missing receiver address (--to)"), 1)
|
|
}
|
|
to := toFlag.Uint160()
|
|
token, err := getMatchingToken(ctx, wall, ctx.String("token"), standard)
|
|
if err != nil {
|
|
token, err = getMatchingTokenRPC(ctx, c, from, ctx.String("token"), standard)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("can't fetch matching token from RPC-node: %w", err), 1)
|
|
}
|
|
}
|
|
|
|
cosignersOffset, data, extErr := cmdargs.GetDataFromContext(ctx)
|
|
if extErr != nil {
|
|
return extErr
|
|
}
|
|
|
|
cosigners, extErr := cmdargs.GetSignersFromContext(ctx, cosignersOffset)
|
|
if extErr != nil {
|
|
return extErr
|
|
}
|
|
cosignersAccounts, err := cmdargs.GetSignersAccounts(wall, cosigners)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("failed to create NEP-17 transfer transaction: %w", err), 1)
|
|
}
|
|
|
|
amountArg := ctx.String("amount")
|
|
switch standard {
|
|
case manifest.NEP17StandardName:
|
|
amount, err := fixedn.FromString(amountArg, int(token.Decimals))
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("invalid amount: %w", err), 1)
|
|
}
|
|
return signAndSendNEP17Transfer(ctx, c, acc, []client.TransferTarget{{
|
|
Token: token.Hash,
|
|
Address: to,
|
|
Amount: amount.Int64(),
|
|
Data: data,
|
|
}}, cosignersAccounts)
|
|
case manifest.NEP11StandardName:
|
|
tokenID := ctx.String("id")
|
|
if tokenID == "" {
|
|
return cli.NewExitError(errors.New("token ID should be specified"), 1)
|
|
}
|
|
tokenIDBytes, err := hex.DecodeString(tokenID)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("invalid token ID: %w", err), 1)
|
|
}
|
|
if amountArg == "" {
|
|
return signAndSendNEP11Transfer(ctx, c, acc, token.Hash, to, tokenIDBytes, nil, data, cosignersAccounts)
|
|
}
|
|
amount, err := fixedn.FromString(amountArg, int(token.Decimals))
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("invalid amount: %w", err), 1)
|
|
}
|
|
return signAndSendNEP11Transfer(ctx, c, acc, token.Hash, to, tokenIDBytes, amount, data, cosignersAccounts)
|
|
default:
|
|
return cli.NewExitError(fmt.Errorf("unsupported token standard %s", standard), 1)
|
|
}
|
|
}
|
|
|
|
func signAndSendNEP17Transfer(ctx *cli.Context, c *client.Client, acc *wallet.Account, recipients []client.TransferTarget, cosigners []client.SignerAccount) error {
|
|
gas := flags.Fixed8FromContext(ctx, "gas")
|
|
sysgas := flags.Fixed8FromContext(ctx, "sysgas")
|
|
|
|
tx, err := c.CreateNEP17MultiTransferTx(acc, int64(gas), recipients, cosigners)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
tx.SystemFee += int64(sysgas)
|
|
|
|
if outFile := ctx.String("out"); outFile != "" {
|
|
m, err := c.GetNetwork()
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("failed to save tx: %w", err), 1)
|
|
}
|
|
if err := paramcontext.InitAndSave(m, tx, acc, outFile); err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
} else {
|
|
if !ctx.Bool("force") {
|
|
err := input.ConfirmTx(ctx.App.Writer, tx)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
}
|
|
_, err := c.SignAndPushTx(tx, acc, cosigners)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
}
|
|
|
|
fmt.Fprintln(ctx.App.Writer, tx.Hash().StringLE())
|
|
return nil
|
|
}
|
|
|
|
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
|
|
}
|