neoneo-go/cli/wallet/validator.go

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package wallet
import (
"fmt"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/options"
"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/io"
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
"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>",
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...),
},
}
}
func handleRegister(ctx *cli.Context) error {
return handleCandidate(ctx, "registerCandidate")
}
func handleUnregister(ctx *cli.Context) error {
return handleCandidate(ctx, "unregisterCandidate")
}
func handleCandidate(ctx *cli.Context, method string) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
addrFlag := ctx.Generic("address").(*flags.Address)
addr := addrFlag.Uint160()
acc, err := getDecryptedAccount(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 err
}
gas := flags.Fixed8FromContext(ctx, "gas")
w := io.NewBufBinWriter()
emit.AppCallWithOperationAndArgs(w.BinWriter, client.NeoContractHash, method, acc.PrivateKey().PublicKey().Bytes())
emit.Opcode(w.BinWriter, opcode.ASSERT)
tx, err := c.CreateTxFromScript(w.Bytes(), acc, -1, int64(gas))
if err != nil {
return cli.NewExitError(err, 1)
} else if err = acc.SignTx(tx); err != nil {
return cli.NewExitError(fmt.Errorf("can't sign tx: %v", err), 1)
}
res, err := c.SendRawTransaction(tx)
if err != nil {
return cli.NewExitError(err, 1)
}
fmt.Println(res.StringLE())
return nil
}
func handleVote(ctx *cli.Context) error {
wall, err := openWallet(ctx.String("wallet"))
if err != nil {
return cli.NewExitError(err, 1)
}
addrFlag := ctx.Generic("address").(*flags.Address)
addr := addrFlag.Uint160()
acc, err := getDecryptedAccount(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 err
}
var pubArg interface{}
if pub != nil {
pubArg = pub.Bytes()
}
gas := flags.Fixed8FromContext(ctx, "gas")
w := io.NewBufBinWriter()
emit.AppCallWithOperationAndArgs(w.BinWriter, client.NeoContractHash, "vote", addr.BytesBE(), pubArg)
emit.Opcode(w.BinWriter, opcode.ASSERT)
tx, err := c.CreateTxFromScript(w.Bytes(), acc, -1, int64(gas))
if err != nil {
return cli.NewExitError(err, 1)
}
if err = acc.SignTx(tx); err != nil {
return cli.NewExitError(fmt.Errorf("can't sign tx: %v", err), 1)
}
res, err := c.SendRawTransaction(tx)
if err != nil {
return cli.NewExitError(err, 1)
}
fmt.Println(res.StringLE())
return nil
}
func getDecryptedAccount(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 := readPassword("Password > "); err != nil {
return nil, err
} else if err := acc.Decrypt(pass); err != nil {
return nil, err
}
return acc, nil
}