153 lines
5.2 KiB
Go
153 lines
5.2 KiB
Go
package ante
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import (
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"runtime/debug"
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"github.com/palantir/stacktrace"
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log "github.com/xlab/suplog"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/cosmos/cosmos-sdk/types/tx/signing"
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authante "github.com/cosmos/cosmos-sdk/x/auth/ante"
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authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
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authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
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channelkeeper "github.com/cosmos/ibc-go/modules/core/04-channel/keeper"
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ibcante "github.com/cosmos/ibc-go/modules/core/ante"
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"github.com/tharsis/ethermint/crypto/ethsecp256k1"
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)
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const (
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secp256k1VerifyCost uint64 = 21000
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)
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// AccountKeeper defines an expected keeper interface for the auth module's AccountKeeper
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type AccountKeeper interface {
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authante.AccountKeeper
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NewAccountWithAddress(ctx sdk.Context, addr sdk.AccAddress) authtypes.AccountI
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GetSequence(sdk.Context, sdk.AccAddress) (uint64, error)
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}
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// BankKeeper defines an expected keeper interface for the bank module's Keeper
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type BankKeeper interface {
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authtypes.BankKeeper
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GetBalance(ctx sdk.Context, addr sdk.AccAddress, denom string) sdk.Coin
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}
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// NewAnteHandler returns an ante handler responsible for attempting to route an
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// Ethereum or SDK transaction to an internal ante handler for performing
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// transaction-level processing (e.g. fee payment, signature verification) before
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// being passed onto it's respective handler.
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func NewAnteHandler(
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ak AccountKeeper,
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bankKeeper BankKeeper,
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evmKeeper EVMKeeper,
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feeGrantKeeper authante.FeegrantKeeper,
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channelKeeper channelkeeper.Keeper,
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signModeHandler authsigning.SignModeHandler,
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) sdk.AnteHandler {
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return func(
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ctx sdk.Context, tx sdk.Tx, sim bool,
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) (newCtx sdk.Context, err error) {
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var anteHandler sdk.AnteHandler
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defer Recover(&err)
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txWithExtensions, ok := tx.(authante.HasExtensionOptionsTx)
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if ok {
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opts := txWithExtensions.GetExtensionOptions()
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if len(opts) > 0 {
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switch typeURL := opts[0].GetTypeUrl(); typeURL {
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case "/ethermint.evm.v1alpha1.ExtensionOptionsEthereumTx":
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// handle as *evmtypes.MsgEthereumTx
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anteHandler = sdk.ChainAnteDecorators(
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NewEthSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
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authante.NewMempoolFeeDecorator(),
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authante.NewTxTimeoutHeightDecorator(),
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authante.NewValidateMemoDecorator(ak),
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NewEthValidateBasicDecorator(),
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NewEthSigVerificationDecorator(evmKeeper),
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NewEthAccountVerificationDecorator(ak, bankKeeper, evmKeeper),
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NewEthNonceVerificationDecorator(ak),
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NewEthGasConsumeDecorator(ak, bankKeeper, evmKeeper),
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NewCanTransferDecorator(evmKeeper),
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NewAccessListDecorator(evmKeeper),
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NewEthIncrementSenderSequenceDecorator(ak), // innermost AnteDecorator.
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)
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default:
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return ctx, stacktrace.Propagate(
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sdkerrors.Wrap(sdkerrors.ErrUnknownExtensionOptions, typeURL),
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"rejecting tx with unsupported extension option",
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)
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}
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return anteHandler(ctx, tx, sim)
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}
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}
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// handle as totally normal Cosmos SDK tx
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switch tx.(type) {
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case sdk.Tx:
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anteHandler = sdk.ChainAnteDecorators(
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authante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
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authante.NewRejectExtensionOptionsDecorator(),
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authante.NewMempoolFeeDecorator(),
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authante.NewValidateBasicDecorator(),
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authante.NewTxTimeoutHeightDecorator(),
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authante.NewValidateMemoDecorator(ak),
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ibcante.NewAnteDecorator(channelKeeper),
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authante.NewConsumeGasForTxSizeDecorator(ak),
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authante.NewSetPubKeyDecorator(ak), // SetPubKeyDecorator must be called before all signature verification decorators
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authante.NewValidateSigCountDecorator(ak),
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authante.NewDeductFeeDecorator(ak, bankKeeper, feeGrantKeeper),
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authante.NewSigGasConsumeDecorator(ak, DefaultSigVerificationGasConsumer),
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authante.NewSigVerificationDecorator(ak, signModeHandler),
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authante.NewIncrementSequenceDecorator(ak), // innermost AnteDecorator
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)
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default:
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return ctx, stacktrace.Propagate(
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sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx),
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"transaction is not an SDK tx",
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)
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}
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return anteHandler(ctx, tx, sim)
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}
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}
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func Recover(err *error) {
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if r := recover(); r != nil {
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*err = sdkerrors.Wrapf(sdkerrors.ErrPanic, "%v", r)
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if e, ok := r.(error); ok {
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log.WithError(e).Errorln("ante handler panicked with an error")
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log.Debugln(string(debug.Stack()))
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} else {
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log.Errorln(r)
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}
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}
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}
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var _ authante.SignatureVerificationGasConsumer = DefaultSigVerificationGasConsumer
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// DefaultSigVerificationGasConsumer is the default implementation of SignatureVerificationGasConsumer. It consumes gas
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// for signature verification based upon the public key type. The cost is fetched from the given params and is matched
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// by the concrete type.
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func DefaultSigVerificationGasConsumer(
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meter sdk.GasMeter, sig signing.SignatureV2, params authtypes.Params,
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) error {
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// support for ethereum ECDSA secp256k1 keys
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_, ok := sig.PubKey.(*ethsecp256k1.PubKey)
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if ok {
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meter.ConsumeGas(secp256k1VerifyCost, "ante verify: eth_secp256k1")
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return nil
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}
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return authante.DefaultSigVerificationGasConsumer(meter, sig, params)
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}
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