package ante import ( sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" "github.com/cosmos/cosmos-sdk/types/tx/signing" "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" channelkeeper "github.com/cosmos/ibc-go/v3/modules/core/04-channel/keeper" ibcante "github.com/cosmos/ibc-go/v3/modules/core/ante" evmtypes "github.com/tharsis/ethermint/x/evm/types" ) // HandlerOptions extend the SDK's AnteHandler options by requiring the IBC // channel keeper, EVM Keeper and Fee Market Keeper. type HandlerOptions struct { AccountKeeper evmtypes.AccountKeeper BankKeeper evmtypes.BankKeeper IBCChannelKeeper channelkeeper.Keeper FeeMarketKeeper evmtypes.FeeMarketKeeper EvmKeeper EVMKeeper FeegrantKeeper ante.FeegrantKeeper SignModeHandler authsigning.SignModeHandler SigGasConsumer func(meter sdk.GasMeter, sig signing.SignatureV2, params authtypes.Params) error } func (options HandlerOptions) Validate() error { if options.AccountKeeper == nil { return sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for AnteHandler") } if options.BankKeeper == nil { return sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for AnteHandler") } if options.SignModeHandler == nil { return sdkerrors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder") } if options.FeeMarketKeeper == nil { return sdkerrors.Wrap(sdkerrors.ErrLogic, "fee market keeper is required for AnteHandler") } if options.EvmKeeper == nil { return sdkerrors.Wrap(sdkerrors.ErrLogic, "evm keeper is required for AnteHandler") } return nil } func newEthAnteHandler(options HandlerOptions) sdk.AnteHandler { return sdk.ChainAnteDecorators( NewEthSetUpContextDecorator(options.EvmKeeper), // outermost AnteDecorator. SetUpContext must be called first NewEthMempoolFeeDecorator(options.EvmKeeper), // Check eth effective gas price against minimal-gas-prices NewEthValidateBasicDecorator(options.EvmKeeper), NewEthSigVerificationDecorator(options.EvmKeeper), NewEthAccountVerificationDecorator(options.AccountKeeper, options.BankKeeper, options.EvmKeeper), NewEthGasConsumeDecorator(options.EvmKeeper), NewCanTransferDecorator(options.EvmKeeper), NewEthIncrementSenderSequenceDecorator(options.AccountKeeper), // innermost AnteDecorator. ) } func newCosmosAnteHandler(options HandlerOptions) sdk.AnteHandler { return sdk.ChainAnteDecorators( RejectMessagesDecorator{}, // reject MsgEthereumTxs ante.NewSetUpContextDecorator(), ante.NewRejectExtensionOptionsDecorator(), ante.NewMempoolFeeDecorator(), ante.NewValidateBasicDecorator(), ante.NewTxTimeoutHeightDecorator(), ante.NewValidateMemoDecorator(options.AccountKeeper), ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper), ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper), // SetPubKeyDecorator must be called before all signature verification decorators ante.NewSetPubKeyDecorator(options.AccountKeeper), ante.NewValidateSigCountDecorator(options.AccountKeeper), ante.NewSigGasConsumeDecorator(options.AccountKeeper, options.SigGasConsumer), ante.NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler), ante.NewIncrementSequenceDecorator(options.AccountKeeper), ibcante.NewAnteDecorator(options.IBCChannelKeeper), ) } func newCosmosAnteHandlerEip712(options HandlerOptions) sdk.AnteHandler { return sdk.ChainAnteDecorators( RejectMessagesDecorator{}, // reject MsgEthereumTxs ante.NewSetUpContextDecorator(), // NOTE: extensions option decorator removed // ante.NewRejectExtensionOptionsDecorator(), ante.NewMempoolFeeDecorator(), ante.NewValidateBasicDecorator(), ante.NewTxTimeoutHeightDecorator(), ante.NewValidateMemoDecorator(options.AccountKeeper), ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper), ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper), // SetPubKeyDecorator must be called before all signature verification decorators ante.NewSetPubKeyDecorator(options.AccountKeeper), ante.NewValidateSigCountDecorator(options.AccountKeeper), ante.NewSigGasConsumeDecorator(options.AccountKeeper, options.SigGasConsumer), // Note: signature verification uses EIP instead of the cosmos signature validator NewEip712SigVerificationDecorator(options.AccountKeeper, options.SignModeHandler), ante.NewIncrementSequenceDecorator(options.AccountKeeper), ibcante.NewAnteDecorator(options.IBCChannelKeeper), ) }