Documentation
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Overview ¶
Package ante defines the SDK auth module's AnteHandler as well as an internal AnteHandler for an Ethereum transaction (i.e MsgEthereumTx).
During CheckTx, the transaction is passed through a series of pre-message execution validation checks such as signature and account verification in addition to minimum fees being checked. Otherwise, during DeliverTx, the transaction is simply passed to the EVM which will also perform the same series of checks. The distinction is made in CheckTx to prevent spam and DoS attacks.
Index ¶
Constants ¶
const ( // MaxWasmDispatchMsgCount limits the maximum number of nested messages in a CosmWasm DispatchMsg // to prevent DoS attacks via excessive nested messages MaxWasmDispatchMsgCount = 10 // EvmMsgTypeURL is the type URL for EVM messages EvmMsgTypeURL = "/ethermint.evm.v1.MsgEthereumTx" )
Variables ¶
This section is empty.
Functions ¶
func NewAnteHandler ¶
func NewAnteHandler(options HandlerOptions) sdk.AnteHandler
NewAnteHandler returns an ante handler responsible for attempting to route an Ethereum or SDK transaction to an internal ante handler for performing transaction-level processing (e.g. fee payment, signature verification) before being passed onto it's respective handler.
Types ¶
type EvmKeeper ¶
type EvmKeeper interface {
GetParams(ctx sdk.Context) (params evmtypes.Params)
ChainID() *big.Int
GetBaseFee(ctx sdk.Context, ethCfg *params.ChainConfig) *big.Int
}
EvmKeeper defines the expected keeper interface used on the AnteHandler
type HandlerOptions ¶
type HandlerOptions struct {
AccountKeeper evmtypes.AccountKeeper
BankKeeper evmtypes.BankKeeper
IBCKeeper *ibckeeper.Keeper
//FeeMarketKeeper evmtypes.FeeMarketKeeper
FeeMarketKeeper ethante.FeeMarketKeeper
EvmKeeper ethante.EVMKeeper
FeegrantKeeper ante.FeegrantKeeper
SignModeHandler *txsigning.HandlerMap
SigGasConsumer func(meter storetypes.GasMeter, sig signing.SignatureV2, params authtypes.Params) error
TxCounterStoreKey storetypes.StoreKey
WasmConfig wasmTypes.WasmConfig
Cdc codec.BinaryCodec
MaxTxGasWanted uint64
TxFeeChecker ante.TxFeeChecker
MaxWasmDispatchMsgCount uint64 // 限制 CosmWasm DispatchMsg 中嵌套消息的最大数量
}
HandlerOptions defines the list of module keepers required to run the Evmos AnteHandler decorators.
func (HandlerOptions) Validate ¶
func (options HandlerOptions) Validate() error
Validate checks if the keepers are defined
type ValidatorCommissionDecorator ¶
type ValidatorCommissionDecorator struct {
// contains filtered or unexported fields
}
ValidatorCommissionDecorator validates that the validator commission is always greater or equal than the min commission rate
func NewValidatorCommissionDecorator ¶
func NewValidatorCommissionDecorator(cdc codec.BinaryCodec) ValidatorCommissionDecorator
NewValidatorCommissionDecorator creates a new NewValidatorCommissionDecorator
func (ValidatorCommissionDecorator) AnteHandle ¶
func (vcd ValidatorCommissionDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
AnteHandle checks if the tx contains a staking create validator or edit validator. It errors if the the commission rate is below the min threshold.
type WasmSecurityDecorator ¶ added in v0.3.1
type WasmSecurityDecorator struct {
// contains filtered or unexported fields
}
WasmSecurityDecorator checks for security issues in CosmWasm messages and prevents bypassing AnteHandler gas checks via CosmWasm DispatchMsg
func NewWasmSecurityDecorator ¶ added in v0.3.1
func NewWasmSecurityDecorator(cdc codec.BinaryCodec, evmKeeper ethante.EVMKeeper, maxTxGasWanted uint64) WasmSecurityDecorator
NewWasmSecurityDecorator creates a new WasmSecurityDecorator
func (WasmSecurityDecorator) AnteHandle ¶ added in v0.3.1
func (wsd WasmSecurityDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)
AnteHandle inspects CosmWasm messages in the tx to ensure AnteHandler checks are not bypassed
func (WasmSecurityDecorator) ExtractMessagesFromTx ¶ added in v0.3.1
func (wsd WasmSecurityDecorator) ExtractMessagesFromTx(ctx sdk.Context, tx sdk.Tx) ([]sdk.Msg, error)
ExtractMessagesFromTx extracts all messages from a transaction
Source Files