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reject_msgs.go
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/
reject_msgs.go
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// Copyright 2022 Evmos Foundation
// This file is part of the Evmos Network packages.
//
// Evmos 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 Evmos packages are 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 Evmos packages. If not, see https://github.com/evmos/evmos/blob/main/LICENSE
package cosmos
import (
errorsmod "cosmossdk.io/errors"
sdk "github.com/cosmos/cosmos-sdk/types"
errortypes "github.com/cosmos/cosmos-sdk/types/errors"
evmtypes "github.com/settlus/chain/evmos/x/evm/types"
)
// RejectMessagesDecorator prevents invalid msg types from being executed
type RejectMessagesDecorator struct{}
// AnteHandle rejects messages that requires ethereum-specific authentication.
// For example `MsgEthereumTx` requires fee to be deducted in the antehandler in
// order to perform the refund.
func (rmd RejectMessagesDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
for _, msg := range tx.GetMsgs() {
if _, ok := msg.(*evmtypes.MsgEthereumTx); ok {
return ctx, errorsmod.Wrapf(
errortypes.ErrInvalidType,
"MsgEthereumTx needs to be contained within a tx with 'ExtensionOptionsEthereumTx' option",
)
}
}
return next(ctx, tx, simulate)
}