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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type CanTransferDecorator ¶
type CanTransferDecorator struct {
// contains filtered or unexported fields
}
CanTransferDecorator checks if the sender is allowed to transfer funds according to the EVM block context rules.
func NewCanTransferDecorator ¶
func NewCanTransferDecorator(evmKeeper EVMKeeper) CanTransferDecorator
NewCanTransferDecorator creates a new CanTransferDecorator instance.
func (CanTransferDecorator) AnteHandle ¶
func (ctd CanTransferDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)
AnteHandle creates an EVM from the message and calls the BlockContext CanTransfer function to see if the address can execute the transaction.
type EVMKeeper ¶
type EVMKeeper interface {
statedb.Keeper
ChainID() *big.Int
GetParams(ctx sdk.Context) evmtypes.Params
NewEVM(ctx sdk.Context, msg core.Message, cfg *evmtypes.EVMConfig, tracer vm.EVMLogger, stateDB vm.StateDB) *vm.EVM
DeductTxCostsFromUserBalance(ctx sdk.Context, msgEthTx evmtypes.MsgEthereumTx, txData evmtypes.TxData, homestead, istanbul, london bool) (sdk.Coins, error)
BaseFee(ctx sdk.Context, ethCfg *params.ChainConfig) *big.Int
GetBalance(ctx sdk.Context, addr common.Address) *big.Int
ResetTransientGasUsed(ctx sdk.Context)
}
EVMKeeper defines the expected keeper interface used on the Eth AnteHandler
type EthAccountVerificationDecorator ¶
type EthAccountVerificationDecorator struct {
// contains filtered or unexported fields
}
EthAccountVerificationDecorator validates an account balance checks
func NewEthAccountVerificationDecorator ¶
func NewEthAccountVerificationDecorator(ak evmtypes.AccountKeeper, ek EVMKeeper) EthAccountVerificationDecorator
NewEthAccountVerificationDecorator creates a new EthAccountVerificationDecorator
func (EthAccountVerificationDecorator) AnteHandle ¶
func (avd EthAccountVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
AnteHandle validates checks that the sender balance is greater than the total transaction cost. The account will be set to store if it doesn't exis, i.e cannot be found on store. This AnteHandler decorator will fail if: - any of the msgs is not a MsgEthereumTx - from address is empty - account balance is lower than the transaction cost
type EthGasConsumeDecorator ¶
type EthGasConsumeDecorator struct {
// contains filtered or unexported fields
}
EthGasConsumeDecorator validates enough intrinsic gas for the transaction and gas consumption.
func NewEthGasConsumeDecorator ¶
func NewEthGasConsumeDecorator( evmKeeper EVMKeeper, maxGasWanted uint64, ) EthGasConsumeDecorator
NewEthGasConsumeDecorator creates a new EthGasConsumeDecorator
func (EthGasConsumeDecorator) AnteHandle ¶
func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
AnteHandle validates that the Ethereum tx message has enough to cover intrinsic gas (during CheckTx only) and that the sender has enough balance to pay for the gas cost.
Intrinsic gas for a transaction is the amount of gas that the transaction uses before the transaction is executed. The gas is a constant value plus any cost inccured by additional bytes of data supplied with the transaction.
This AnteHandler decorator will fail if: - the message is not a MsgEthereumTx - sender account cannot be found - transaction's gas limit is lower than the intrinsic gas - user doesn't have enough balance to deduct the transaction fees (gas_limit * gas_price) - transaction or block gas meter runs out of gas - sets the gas meter limit
type EthIncrementSenderSequenceDecorator ¶
type EthIncrementSenderSequenceDecorator struct {
// contains filtered or unexported fields
}
EthIncrementSenderSequenceDecorator increments the sequence of the signers.
func NewEthIncrementSenderSequenceDecorator ¶
func NewEthIncrementSenderSequenceDecorator(ak evmtypes.AccountKeeper) EthIncrementSenderSequenceDecorator
NewEthIncrementSenderSequenceDecorator creates a new EthIncrementSenderSequenceDecorator.
func (EthIncrementSenderSequenceDecorator) AnteHandle ¶
func (issd EthIncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)
AnteHandle handles incrementing the sequence of the signer (i.e sender). If the transaction is a contract creation, the nonce will be incremented during the transaction execution and not within this AnteHandler decorator.
type EthMempoolFeeDecorator ¶
type EthMempoolFeeDecorator struct {
// contains filtered or unexported fields
}
EthMempoolFeeDecorator will check if the transaction's effective fee is at least as large as the local validator's minimum gasFee (defined in validator config). If fee is too low, decorator returns error and tx is rejected from mempool. Note this only applies when ctx.CheckTx = true If fee is high enough or not CheckTx, then call next AnteHandler CONTRACT: Tx must implement FeeTx to use MempoolFeeDecorator
func NewEthMempoolFeeDecorator ¶
func NewEthMempoolFeeDecorator(ek EVMKeeper) EthMempoolFeeDecorator
func (EthMempoolFeeDecorator) AnteHandle ¶
func (mfd EthMempoolFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
AnteHandle ensures that the provided fees meet a minimum threshold for the validator, if this is a CheckTx. This is only for local mempool purposes, and thus is only ran on check tx. It only do the check if london hardfork not enabled or feemarket not enabled, because in that case feemarket will take over the task.
type EthSetupContextDecorator ¶
type EthSetupContextDecorator struct {
// contains filtered or unexported fields
}
EthSetupContextDecorator is adapted from SetUpContextDecorator from cosmos-sdk, it ignores gas consumption by setting the gas meter to infinite
func NewEthSetUpContextDecorator ¶
func NewEthSetUpContextDecorator(evmKeeper EVMKeeper) EthSetupContextDecorator
func (EthSetupContextDecorator) AnteHandle ¶
type EthSigVerificationDecorator ¶
type EthSigVerificationDecorator struct {
// contains filtered or unexported fields
}
EthSigVerificationDecorator validates an ethereum signatures
func NewEthSigVerificationDecorator ¶
func NewEthSigVerificationDecorator(ek EVMKeeper) EthSigVerificationDecorator
NewEthSigVerificationDecorator creates a new EthSigVerificationDecorator
func (EthSigVerificationDecorator) AnteHandle ¶
func (esvd EthSigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
AnteHandle validates checks that the registered chain id is the same as the one on the message, and that the signer address matches the one defined on the message. It's not skipped for RecheckTx, because it set `From` address which is critical from other ante handler to work. Failure in RecheckTx will prevent tx to be included into block, especially when CheckTx succeed, in which case user won't see the error message.
type EthValidateBasicDecorator ¶
type EthValidateBasicDecorator struct {
// contains filtered or unexported fields
}
EthValidateBasicDecorator is adapted from ValidateBasicDecorator from cosmos-sdk, it ignores ErrNoSignatures
func NewEthValidateBasicDecorator ¶
func NewEthValidateBasicDecorator(ek EVMKeeper) EthValidateBasicDecorator
NewEthValidateBasicDecorator creates a new EthValidateBasicDecorator
func (EthValidateBasicDecorator) AnteHandle ¶
func (vbd EthValidateBasicDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)
AnteHandle handles basic validation of tx
type RejectMessagesDecorator ¶
type RejectMessagesDecorator struct{}
RejectMessagesDecorator prevents invalid msg types from being executed
func (RejectMessagesDecorator) AnteHandle ¶
func (rmd RejectMessagesDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
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.
Source Files