296 lines
8.0 KiB
Go
296 lines
8.0 KiB
Go
package tx
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
|
|
gogogrpc "github.com/gogo/protobuf/grpc"
|
|
"github.com/spf13/pflag"
|
|
|
|
"github.com/cosmos/cosmos-sdk/client"
|
|
"github.com/cosmos/cosmos-sdk/client/input"
|
|
cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
|
|
sdk "github.com/cosmos/cosmos-sdk/types"
|
|
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
|
|
"github.com/cosmos/cosmos-sdk/types/tx"
|
|
"github.com/cosmos/cosmos-sdk/types/tx/signing"
|
|
authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
|
|
)
|
|
|
|
// GenerateOrBroadcastTxCLI will either generate and print and unsigned transaction
|
|
// or sign it and broadcast it returning an error upon failure.
|
|
func GenerateOrBroadcastTxCLI(clientCtx client.Context, flagSet *pflag.FlagSet, msgs ...sdk.Msg) error {
|
|
txf := NewFactoryCLI(clientCtx, flagSet)
|
|
return GenerateOrBroadcastTxWithFactory(clientCtx, txf, msgs...)
|
|
}
|
|
|
|
// GenerateOrBroadcastTxWithFactory will either generate and print and unsigned transaction
|
|
// or sign it and broadcast it returning an error upon failure.
|
|
func GenerateOrBroadcastTxWithFactory(clientCtx client.Context, txf Factory, msgs ...sdk.Msg) error {
|
|
// Validate all msgs before generating or broadcasting the tx.
|
|
// We were calling ValidateBasic separately in each CLI handler before.
|
|
// Right now, we're factorizing that call inside this function.
|
|
// ref: https://github.com/cosmos/cosmos-sdk/pull/9236#discussion_r623803504
|
|
for _, msg := range msgs {
|
|
if err := msg.ValidateBasic(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if clientCtx.GenerateOnly {
|
|
return txf.PrintUnsignedTx(clientCtx, msgs...)
|
|
}
|
|
|
|
return BroadcastTx(clientCtx, txf, msgs...)
|
|
}
|
|
|
|
// BroadcastTx attempts to generate, sign and broadcast a transaction with the
|
|
// given set of messages. It will also simulate gas requirements if necessary.
|
|
// It will return an error upon failure.
|
|
func BroadcastTx(clientCtx client.Context, txf Factory, msgs ...sdk.Msg) error {
|
|
txf, err := txf.Prepare(clientCtx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if txf.SimulateAndExecute() || clientCtx.Simulate {
|
|
_, adjusted, err := CalculateGas(clientCtx, txf, msgs...)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
txf = txf.WithGas(adjusted)
|
|
_, _ = fmt.Fprintf(os.Stderr, "%s\n", GasEstimateResponse{GasEstimate: txf.Gas()})
|
|
}
|
|
|
|
if clientCtx.Simulate {
|
|
return nil
|
|
}
|
|
|
|
tx, err := txf.BuildUnsignedTx(msgs...)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !clientCtx.SkipConfirm {
|
|
out, err := clientCtx.TxConfig.TxJSONEncoder()(tx.GetTx())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, _ = fmt.Fprintf(os.Stderr, "%s\n\n", out)
|
|
|
|
buf := bufio.NewReader(os.Stdin)
|
|
ok, err := input.GetConfirmation("confirm transaction before signing and broadcasting", buf, os.Stderr)
|
|
|
|
if err != nil || !ok {
|
|
_, _ = fmt.Fprintf(os.Stderr, "%s\n", "cancelled transaction")
|
|
return err
|
|
}
|
|
}
|
|
|
|
tx.SetFeeGranter(clientCtx.GetFeeGranterAddress())
|
|
err = Sign(txf, clientCtx.GetFromName(), tx, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
txBytes, err := clientCtx.TxConfig.TxEncoder()(tx.GetTx())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// broadcast to a Tendermint node
|
|
res, err := clientCtx.BroadcastTx(txBytes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return clientCtx.PrintProto(res)
|
|
}
|
|
|
|
// CalculateGas simulates the execution of a transaction and returns the
|
|
// simulation response obtained by the query and the adjusted gas amount.
|
|
func CalculateGas(
|
|
clientCtx gogogrpc.ClientConn, txf Factory, msgs ...sdk.Msg,
|
|
) (*tx.SimulateResponse, uint64, error) {
|
|
txBytes, err := txf.BuildSimTx(msgs...)
|
|
if err != nil {
|
|
return nil, 0, err
|
|
}
|
|
|
|
txSvcClient := tx.NewServiceClient(clientCtx)
|
|
simRes, err := txSvcClient.Simulate(context.Background(), &tx.SimulateRequest{
|
|
TxBytes: txBytes,
|
|
})
|
|
if err != nil {
|
|
return nil, 0, err
|
|
}
|
|
|
|
return simRes, uint64(txf.GasAdjustment() * float64(simRes.GasInfo.GasUsed)), nil
|
|
}
|
|
|
|
// SignWithPrivKey signs a given tx with the given private key, and returns the
|
|
// corresponding SignatureV2 if the signing is successful.
|
|
func SignWithPrivKey(
|
|
signMode signing.SignMode, signerData authsigning.SignerData,
|
|
txBuilder client.TxBuilder, priv cryptotypes.PrivKey, txConfig client.TxConfig,
|
|
accSeq uint64,
|
|
) (signing.SignatureV2, error) {
|
|
var sigV2 signing.SignatureV2
|
|
|
|
// Generate the bytes to be signed.
|
|
signBytes, err := txConfig.SignModeHandler().GetSignBytes(signMode, signerData, txBuilder.GetTx())
|
|
if err != nil {
|
|
return sigV2, err
|
|
}
|
|
|
|
// Sign those bytes
|
|
signature, err := priv.Sign(signBytes)
|
|
if err != nil {
|
|
return sigV2, err
|
|
}
|
|
|
|
// Construct the SignatureV2 struct
|
|
sigData := signing.SingleSignatureData{
|
|
SignMode: signMode,
|
|
Signature: signature,
|
|
}
|
|
|
|
sigV2 = signing.SignatureV2{
|
|
PubKey: priv.PubKey(),
|
|
Data: &sigData,
|
|
Sequence: accSeq,
|
|
}
|
|
|
|
return sigV2, nil
|
|
}
|
|
|
|
func checkMultipleSigners(mode signing.SignMode, tx authsigning.Tx) error {
|
|
if mode == signing.SignMode_SIGN_MODE_DIRECT &&
|
|
len(tx.GetSigners()) > 1 {
|
|
return sdkerrors.Wrap(sdkerrors.ErrNotSupported, "Signing in DIRECT mode is only supported for transactions with one signer only")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Sign signs a given tx with a named key. The bytes signed over are canconical.
|
|
// The resulting signature will be added to the transaction builder overwriting the previous
|
|
// ones if overwrite=true (otherwise, the signature will be appended).
|
|
// Signing a transaction with mutltiple signers in the DIRECT mode is not supprted and will
|
|
// return an error.
|
|
// An error is returned upon failure.
|
|
func Sign(txf Factory, name string, txBuilder client.TxBuilder, overwriteSig bool) error {
|
|
if txf.keybase == nil {
|
|
return errors.New("keybase must be set prior to signing a transaction")
|
|
}
|
|
|
|
signMode := txf.signMode
|
|
if signMode == signing.SignMode_SIGN_MODE_UNSPECIFIED {
|
|
// use the SignModeHandler's default mode if unspecified
|
|
signMode = txf.txConfig.SignModeHandler().DefaultMode()
|
|
}
|
|
if err := checkMultipleSigners(signMode, txBuilder.GetTx()); err != nil {
|
|
return err
|
|
}
|
|
|
|
k, err := txf.keybase.Key(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
pubKey, err := k.GetPubKey()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
pubkeys, err := txBuilder.GetTx().GetPubKeys()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
signerIndex := 0
|
|
for i, p := range pubkeys {
|
|
if p.Equals(pubKey) {
|
|
signerIndex = i
|
|
break
|
|
}
|
|
}
|
|
|
|
signerData := authsigning.SignerData{
|
|
ChainID: txf.chainID,
|
|
AccountNumber: txf.accountNumber,
|
|
Sequence: txf.sequence,
|
|
SignerIndex: signerIndex,
|
|
}
|
|
|
|
// For SIGN_MODE_DIRECT, calling SetSignatures calls setSignerInfos on
|
|
// TxBuilder under the hood, and SignerInfos is needed to generated the
|
|
// sign bytes. This is the reason for setting SetSignatures here, with a
|
|
// nil signature.
|
|
//
|
|
// Note: this line is not needed for SIGN_MODE_LEGACY_AMINO, but putting it
|
|
// also doesn't affect its generated sign bytes, so for code's simplicity
|
|
// sake, we put it here.
|
|
sigData := signing.SingleSignatureData{
|
|
SignMode: signMode,
|
|
Signature: nil,
|
|
}
|
|
sig := signing.SignatureV2{
|
|
PubKey: pubKey,
|
|
Data: &sigData,
|
|
Sequence: txf.Sequence(),
|
|
}
|
|
var prevSignatures []signing.SignatureV2
|
|
if !overwriteSig {
|
|
prevSignatures, err = txBuilder.GetTx().GetSignaturesV2()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if err := txBuilder.SetSignatures(sig); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Generate the bytes to be signed.
|
|
bytesToSign, err := txf.txConfig.SignModeHandler().GetSignBytes(signMode, signerData, txBuilder.GetTx())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Sign those bytes
|
|
sigBytes, _, err := txf.keybase.Sign(name, bytesToSign)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Construct the SignatureV2 struct
|
|
sigData = signing.SingleSignatureData{
|
|
SignMode: signMode,
|
|
Signature: sigBytes,
|
|
}
|
|
sig = signing.SignatureV2{
|
|
PubKey: pubKey,
|
|
Data: &sigData,
|
|
Sequence: txf.Sequence(),
|
|
}
|
|
|
|
if overwriteSig {
|
|
return txBuilder.SetSignatures(sig)
|
|
}
|
|
prevSignatures = append(prevSignatures, sig)
|
|
return txBuilder.SetSignatures(prevSignatures...)
|
|
}
|
|
|
|
// GasEstimateResponse defines a response definition for tx gas estimation.
|
|
type GasEstimateResponse struct {
|
|
GasEstimate uint64 `json:"gas_estimate" yaml:"gas_estimate"`
|
|
}
|
|
|
|
func (gr GasEstimateResponse) String() string {
|
|
return fmt.Sprintf("gas estimate: %d", gr.GasEstimate)
|
|
}
|