neoneo-go/cli/wallet/validator.go
2021-05-31 11:18:59 +03:00

272 lines
7.6 KiB
Go

package wallet
import (
"fmt"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/input"
"github.com/nspcc-dev/neo-go/cli/options"
"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"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/encoding/fixedn"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/urfave/cli"
)
func newValidatorCommands() []cli.Command {
return []cli.Command{
{
Name: "register",
Usage: "register as a new candidate",
UsageText: "register -w <path> -r <rpc> -a <addr>",
Action: handleRegister,
Flags: append([]cli.Flag{
walletPathFlag,
gasFlag,
flags.AddressFlag{
Name: "address, a",
Usage: "Address to register",
},
}, options.RPC...),
},
{
Name: "unregister",
Usage: "unregister self as a candidate",
UsageText: "unregister -w <path> -r <rpc> -a <addr>",
Action: handleUnregister,
Flags: append([]cli.Flag{
walletPathFlag,
gasFlag,
flags.AddressFlag{
Name: "address, a",
Usage: "Address to unregister",
},
}, options.RPC...),
},
{
Name: "vote",
Usage: "vote for a validator",
UsageText: "vote -w <path> -r <rpc> [-s <timeout>] [-g gas] -a <addr> [-c <public key>]",
Description: `Votes for a validator by calling "vote" method of a NEO native
contract. Do not provide candidate argument to perform unvoting.
`,
Action: handleVote,
Flags: append([]cli.Flag{
walletPathFlag,
gasFlag,
flags.AddressFlag{
Name: "address, a",
Usage: "Address to vote from",
},
cli.StringFlag{
Name: "candidate, c",
Usage: "Public key of candidate to vote for",
},
}, options.RPC...),
},
{
Name: "getstate",
Usage: "print NEO holder account state",
UsageText: "getstate -a <addr>",
Action: getAccountState,
Flags: append([]cli.Flag{
flags.AddressFlag{
Name: "address, a",
Usage: "Address to get state of",
},
}, options.RPC...),
},
}
}
func handleRegister(ctx *cli.Context) error {
return handleCandidate(ctx, "registerCandidate", 1001*100000000) // registering costs 1000 GAS
}
func handleUnregister(ctx *cli.Context) error {
return handleCandidate(ctx, "unregisterCandidate", -1)
}
func handleCandidate(ctx *cli.Context, method string, sysGas int64) error {
wall, err := openWallet(ctx.String("wallet"))
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)
}
addr := addrFlag.Uint160()
acc, err := getDecryptedAccount(ctx, wall, addr)
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)
}
gas := flags.Fixed8FromContext(ctx, "gas")
neoContractHash, err := c.GetNativeContractHash(nativenames.Neo)
if err != nil {
return err
}
w := io.NewBufBinWriter()
emit.AppCall(w.BinWriter, neoContractHash, method, callflag.States, acc.PrivateKey().PublicKey().Bytes())
emit.Opcodes(w.BinWriter, opcode.ASSERT)
res, err := c.SignAndPushInvocationTx(w.Bytes(), acc, sysGas, gas, []client.SignerAccount{{
Signer: transaction.Signer{
Account: acc.Contract.ScriptHash(),
Scopes: transaction.CalledByEntry,
},
Account: acc,
}})
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to push transaction: %w", err), 1)
}
fmt.Fprintln(ctx.App.Writer, res.StringLE())
return nil
}
func handleVote(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
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)
}
addr := addrFlag.Uint160()
acc, err := getDecryptedAccount(ctx, wall, addr)
if err != nil {
return cli.NewExitError(err, 1)
}
var pub *keys.PublicKey
pubStr := ctx.String("candidate")
if pubStr != "" {
pub, err = keys.NewPublicKeyFromString(pubStr)
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid public key: '%s'", pubStr), 1)
}
}
gctx, cancel := options.GetTimeoutContext(ctx)
defer cancel()
c, err := options.GetRPCClient(gctx, ctx)
if err != nil {
return cli.NewExitError(err, 1)
}
var pubArg interface{}
if pub != nil {
pubArg = pub.Bytes()
}
gas := flags.Fixed8FromContext(ctx, "gas")
neoContractHash, err := c.GetNativeContractHash(nativenames.Neo)
if err != nil {
return cli.NewExitError(err, 1)
}
w := io.NewBufBinWriter()
emit.AppCall(w.BinWriter, neoContractHash, "vote", callflag.States, addr.BytesBE(), pubArg)
emit.Opcodes(w.BinWriter, opcode.ASSERT)
res, err := c.SignAndPushInvocationTx(w.Bytes(), acc, -1, gas, []client.SignerAccount{{
Signer: transaction.Signer{
Account: acc.Contract.ScriptHash(),
Scopes: transaction.CalledByEntry,
},
Account: acc}})
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to push invocation transaction: %w", err), 1)
}
fmt.Fprintln(ctx.App.Writer, res.StringLE())
return nil
}
func getDecryptedAccount(ctx *cli.Context, wall *wallet.Wallet, addr util.Uint160) (*wallet.Account, error) {
acc := wall.GetAccount(addr)
if acc == nil {
return nil, fmt.Errorf("can't find account for the address: %s", address.Uint160ToString(addr))
}
if pass, err := input.ReadPassword("Password > "); err != nil {
fmt.Println("ERROR", pass, err)
return nil, err
} else if err := acc.Decrypt(pass); err != nil {
return nil, err
}
return acc, nil
}
func getAccountState(ctx *cli.Context) error {
addrFlag := ctx.Generic("address").(*flags.Address)
if !addrFlag.IsSet {
return cli.NewExitError("address was not provided", 1)
}
gctx, cancel := options.GetTimeoutContext(ctx)
defer cancel()
c, exitErr := options.GetRPCClient(gctx, ctx)
if exitErr != nil {
return exitErr
}
neoHash, err := c.GetNativeContractHash(nativenames.Neo)
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to get NEO contract hash: %w", err), 1)
}
res, err := c.InvokeFunction(neoHash, "getAccountState", []smartcontract.Parameter{
{
Type: smartcontract.Hash160Type,
Value: addrFlag.Uint160(),
},
}, nil)
if err != nil {
return cli.NewExitError(err, 1)
}
if res.State != "HALT" {
return cli.NewExitError(fmt.Errorf("invocation failed: %s", res.FaultException), 1)
}
if len(res.Stack) == 0 {
return cli.NewExitError("result stack is empty", 1)
}
st := new(state.NEOBalanceState)
err = st.FromStackItem(res.Stack[0])
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to convert account state from stackitem: %w", err), 1)
}
dec, err := c.NEP17Decimals(neoHash)
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to get decimals: %w", err), 1)
}
voted := "null"
if st.VoteTo != nil {
voted = address.Uint160ToString(st.VoteTo.GetScriptHash())
}
fmt.Fprintf(ctx.App.Writer, "\tVoted: %s\n", voted)
fmt.Fprintf(ctx.App.Writer, "\tAmount : %s\n", fixedn.ToString(&st.Balance, int(dec)))
fmt.Fprintf(ctx.App.Writer, "\tBlock: %d\n", st.BalanceHeight)
return nil
}