// Copyright 2021 Evmos Foundation // This file is part of Evmos' Ethermint library. // // The Ethermint library is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // The Ethermint library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with the Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE package ante import ( errorsmod "cosmossdk.io/errors" sdk "github.com/cosmos/cosmos-sdk/types" errortypes "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" ibcante "github.com/cosmos/ibc-go/v5/modules/core/ante" ibckeeper "github.com/cosmos/ibc-go/v5/modules/core/keeper" evmtypes "github.com/evmos/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 IBCKeeper *ibckeeper.Keeper FeeMarketKeeper FeeMarketKeeper EvmKeeper EVMKeeper FeegrantKeeper ante.FeegrantKeeper SignModeHandler authsigning.SignModeHandler SigGasConsumer func(meter sdk.GasMeter, sig signing.SignatureV2, params authtypes.Params) error MaxTxGasWanted uint64 ExtensionOptionChecker ante.ExtensionOptionChecker TxFeeChecker ante.TxFeeChecker } func (options HandlerOptions) validate() error { if options.AccountKeeper == nil { return errorsmod.Wrap(errortypes.ErrLogic, "account keeper is required for AnteHandler") } if options.BankKeeper == nil { return errorsmod.Wrap(errortypes.ErrLogic, "bank keeper is required for AnteHandler") } if options.SignModeHandler == nil { return errorsmod.Wrap(errortypes.ErrLogic, "sign mode handler is required for ante builder") } if options.FeeMarketKeeper == nil { return errorsmod.Wrap(errortypes.ErrLogic, "fee market keeper is required for AnteHandler") } if options.EvmKeeper == nil { return errorsmod.Wrap(errortypes.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 NewEthMinGasPriceDecorator(options.FeeMarketKeeper, options.EvmKeeper), // Check eth effective gas price against the global MinGasPrice NewEthValidateBasicDecorator(options.EvmKeeper), NewEthSigVerificationDecorator(options.EvmKeeper), NewEthAccountVerificationDecorator(options.AccountKeeper, options.EvmKeeper), NewCanTransferDecorator(options.EvmKeeper), NewEthGasConsumeDecorator(options.EvmKeeper, options.MaxTxGasWanted), NewEthIncrementSenderSequenceDecorator(options.AccountKeeper), // innermost AnteDecorator. NewGasWantedDecorator(options.EvmKeeper, options.FeeMarketKeeper), NewEthEmitEventDecorator(options.EvmKeeper), // emit eth tx hash and index at the very last ante handler. ) } func newCosmosAnteHandler(options HandlerOptions) sdk.AnteHandler { return sdk.ChainAnteDecorators( RejectMessagesDecorator{}, // reject MsgEthereumTxs ante.NewSetUpContextDecorator(), ante.NewExtensionOptionsDecorator(options.ExtensionOptionChecker), ante.NewValidateBasicDecorator(), ante.NewTxTimeoutHeightDecorator(), NewMinGasPriceDecorator(options.FeeMarketKeeper, options.EvmKeeper), ante.NewValidateMemoDecorator(options.AccountKeeper), ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper), ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker), // 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.NewRedundantRelayDecorator(options.IBCKeeper), NewGasWantedDecorator(options.EvmKeeper, options.FeeMarketKeeper), ) }