laconicd-deprecated/app/ante/ante.go
Federico Kunze 5a3d514ba0
conflicts
2021-04-17 12:00:07 +02:00

127 lines
4.8 KiB
Go

package ante
import (
"fmt"
"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
"github.com/cosmos/cosmos-sdk/crypto/types/multisig"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/types/tx/signing"
authante "github.com/cosmos/cosmos-sdk/x/auth/ante"
authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
"github.com/cosmos/ethermint/crypto/ethsecp256k1"
evmtypes "github.com/cosmos/ethermint/x/evm/types"
)
const (
// TODO: Use this cost per byte through parameter or overriding NewConsumeGasForTxSizeDecorator
// which currently defaults at 10, if intended
// memoCostPerByte sdk.Gas = 3
secp256k1VerifyCost uint64 = 21000
)
// AccountKeeper defines an expected keeper interface for the auth module's AccountKeeper
type AccountKeeper interface {
authante.AccountKeeper
NewAccountWithAddress(ctx sdk.Context, addr sdk.AccAddress) authtypes.AccountI
}
// BankKeeper defines an expected keeper interface for the bank module's Keeper
type BankKeeper interface {
authtypes.BankKeeper
GetBalance(ctx sdk.Context, addr sdk.AccAddress, denom string) sdk.Coin
SetBalance(ctx sdk.Context, addr sdk.AccAddress, balance sdk.Coin) error
}
// NewAnteHandler returns an ante handler responsible for attempting to route an
// Ethereum or SDK transaction to an internal ante handler for performing
// transaction-level processing (e.g. fee payment, signature verification) before
// being passed onto it's respective handler.
func NewAnteHandler(
ak AccountKeeper, bankKeeper BankKeeper, evmKeeper EVMKeeper, signModeHandler authsigning.SignModeHandler,
) sdk.AnteHandler {
return func(
ctx sdk.Context, tx sdk.Tx, sim bool,
) (newCtx sdk.Context, err error) {
var anteHandler sdk.AnteHandler
switch tx.(type) {
case *evmtypes.MsgEthereumTx:
anteHandler = sdk.ChainAnteDecorators(
NewEthSetupContextDecorator(), // outermost AnteDecorator. EthSetUpContext must be called first
authante.NewRejectExtensionOptionsDecorator(),
NewEthMempoolFeeDecorator(evmKeeper),
authante.NewValidateBasicDecorator(),
NewEthSigVerificationDecorator(),
NewAccountVerificationDecorator(ak, bankKeeper, evmKeeper),
NewNonceVerificationDecorator(ak),
NewEthGasConsumeDecorator(ak, bankKeeper, evmKeeper),
NewIncrementSenderSequenceDecorator(ak), // innermost AnteDecorator.
)
case sdk.Tx:
anteHandler = sdk.ChainAnteDecorators(
authante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
authante.NewRejectExtensionOptionsDecorator(),
authante.NewMempoolFeeDecorator(),
authante.NewValidateBasicDecorator(),
authante.TxTimeoutHeightDecorator{},
authante.NewValidateMemoDecorator(ak),
authante.NewConsumeGasForTxSizeDecorator(ak),
authante.NewRejectFeeGranterDecorator(),
authante.NewSetPubKeyDecorator(ak), // SetPubKeyDecorator must be called before all signature verification decorators
authante.NewValidateSigCountDecorator(ak),
authante.NewDeductFeeDecorator(ak, bankKeeper),
authante.NewSigGasConsumeDecorator(ak, DefaultSigVerificationGasConsumer),
authante.NewSigVerificationDecorator(ak, signModeHandler),
authante.NewIncrementSequenceDecorator(ak), // innermost AnteDecorator
)
default:
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
}
return anteHandler(ctx, tx, sim)
}
}
var _ = DefaultSigVerificationGasConsumer
// DefaultSigVerificationGasConsumer is the default implementation of SignatureVerificationGasConsumer. It consumes gas
// for signature verification based upon the public key type. The cost is fetched from the given params and is matched
// by the concrete type.
func DefaultSigVerificationGasConsumer(
meter sdk.GasMeter, sig signing.SignatureV2, params authtypes.Params,
) error {
pubkey := sig.PubKey
switch pubkey := pubkey.(type) {
case *ed25519.PubKey:
meter.ConsumeGas(params.SigVerifyCostED25519, "ante verify: ed25519")
return nil
case *secp256k1.PubKey:
meter.ConsumeGas(params.SigVerifyCostSecp256k1, "ante verify: secp256k1")
return nil
// support for etherum ECDSA secp256k1 keys
case *ethsecp256k1.PubKey:
meter.ConsumeGas(secp256k1VerifyCost, "ante verify: eth_secp256k1")
return nil
case multisig.PubKey:
multisignature, ok := sig.Data.(*signing.MultiSignatureData)
if !ok {
return fmt.Errorf("expected %T, got, %T", &signing.MultiSignatureData{}, sig.Data)
}
err := authante.ConsumeMultisignatureVerificationGas(meter, multisignature, pubkey, params, sig.Sequence)
if err != nil {
return err
}
return nil
default:
return sdkerrors.Wrapf(sdkerrors.ErrInvalidPubKey, "unrecognized public key type: %T", pubkey)
}
}