ante: switch ethAnteHandler to use AnteDecorators (#252)
* ante: switch ethAnteHandler to use AnteDecorators * ante: cleanup panic recover, update MsgEthereumTx GetSigners * ante: remove EthIntrinsicGasDecorator in favor of EthGasConsumeDecorator * migrate errors
This commit is contained in:
parent
c30205cae9
commit
5b2f068a03
261
app/ante/ante.go
261
app/ante/ante.go
@ -1,9 +1,6 @@
|
|||||||
package ante
|
package ante
|
||||||
|
|
||||||
import (
|
import (
|
||||||
"fmt"
|
|
||||||
"math/big"
|
|
||||||
|
|
||||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||||
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
|
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
|
||||||
"github.com/cosmos/cosmos-sdk/x/auth"
|
"github.com/cosmos/cosmos-sdk/x/auth"
|
||||||
@ -11,11 +8,8 @@ import (
|
|||||||
"github.com/cosmos/cosmos-sdk/x/auth/types"
|
"github.com/cosmos/cosmos-sdk/x/auth/types"
|
||||||
|
|
||||||
"github.com/cosmos/ethermint/crypto"
|
"github.com/cosmos/ethermint/crypto"
|
||||||
emint "github.com/cosmos/ethermint/types"
|
|
||||||
evmtypes "github.com/cosmos/ethermint/x/evm/types"
|
evmtypes "github.com/cosmos/ethermint/x/evm/types"
|
||||||
|
|
||||||
ethcore "github.com/ethereum/go-ethereum/core"
|
|
||||||
|
|
||||||
tmcrypto "github.com/tendermint/tendermint/crypto"
|
tmcrypto "github.com/tendermint/tendermint/crypto"
|
||||||
)
|
)
|
||||||
|
|
||||||
@ -34,10 +28,10 @@ func NewAnteHandler(ak auth.AccountKeeper, sk types.SupplyKeeper) sdk.AnteHandle
|
|||||||
return func(
|
return func(
|
||||||
ctx sdk.Context, tx sdk.Tx, sim bool,
|
ctx sdk.Context, tx sdk.Tx, sim bool,
|
||||||
) (newCtx sdk.Context, err error) {
|
) (newCtx sdk.Context, err error) {
|
||||||
|
var anteHandler sdk.AnteHandler
|
||||||
switch castTx := tx.(type) {
|
switch tx.(type) {
|
||||||
case auth.StdTx:
|
case auth.StdTx:
|
||||||
stdAnte := sdk.ChainAnteDecorators(
|
anteHandler = sdk.ChainAnteDecorators(
|
||||||
authante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
|
authante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
|
||||||
authante.NewMempoolFeeDecorator(),
|
authante.NewMempoolFeeDecorator(),
|
||||||
authante.NewValidateBasicDecorator(),
|
authante.NewValidateBasicDecorator(),
|
||||||
@ -51,14 +45,21 @@ func NewAnteHandler(ak auth.AccountKeeper, sk types.SupplyKeeper) sdk.AnteHandle
|
|||||||
authante.NewIncrementSequenceDecorator(ak), // innermost AnteDecorator
|
authante.NewIncrementSequenceDecorator(ak), // innermost AnteDecorator
|
||||||
)
|
)
|
||||||
|
|
||||||
return stdAnte(ctx, tx, sim)
|
|
||||||
|
|
||||||
case evmtypes.MsgEthereumTx:
|
case evmtypes.MsgEthereumTx:
|
||||||
return ethAnteHandler(ctx, ak, sk, &castTx, sim)
|
anteHandler = sdk.ChainAnteDecorators(
|
||||||
|
NewEthSetupContextDecorator(), // outermost AnteDecorator. EthSetUpContext must be called first
|
||||||
|
NewEthMempoolFeeDecorator(),
|
||||||
|
NewEthSigVerificationDecorator(),
|
||||||
|
NewAccountVerificationDecorator(ak),
|
||||||
|
NewNonceVerificationDecorator(ak),
|
||||||
|
NewEthGasConsumeDecorator(ak, sk),
|
||||||
|
NewIncrementSenderSequenceDecorator(ak), // innermost AnteDecorator.
|
||||||
|
)
|
||||||
default:
|
default:
|
||||||
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
return anteHandler(ctx, tx, sim)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -78,237 +79,3 @@ func sigGasConsumer(
|
|||||||
return sdkerrors.Wrapf(sdkerrors.ErrInvalidPubKey, "unrecognized public key type: %T", pubkey)
|
return sdkerrors.Wrapf(sdkerrors.ErrInvalidPubKey, "unrecognized public key type: %T", pubkey)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// ----------------------------------------------------------------------------
|
|
||||||
// Ethereum Ante Handler
|
|
||||||
|
|
||||||
// ethAnteHandler defines an internal ante handler for an Ethereum transaction
|
|
||||||
// ethTxMsg. 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.
|
|
||||||
func ethAnteHandler(
|
|
||||||
ctx sdk.Context, ak auth.AccountKeeper, sk types.SupplyKeeper,
|
|
||||||
ethTxMsg *evmtypes.MsgEthereumTx, sim bool,
|
|
||||||
) (newCtx sdk.Context, err error) {
|
|
||||||
|
|
||||||
var senderAddr sdk.AccAddress
|
|
||||||
|
|
||||||
// This is done to ignore costs in Ante handler checks
|
|
||||||
ctx = ctx.WithBlockGasMeter(sdk.NewInfiniteGasMeter())
|
|
||||||
|
|
||||||
if ctx.IsCheckTx() {
|
|
||||||
// Only perform pre-message (Ethereum transaction) execution validation
|
|
||||||
// during CheckTx. Otherwise, during DeliverTx the EVM will handle them.
|
|
||||||
if senderAddr, err = validateEthTxCheckTx(ctx, ak, ethTxMsg); err != nil {
|
|
||||||
return ctx, err
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
// This is still currently needed to retrieve the sender address
|
|
||||||
if senderAddr, err = validateSignature(ctx, ethTxMsg); err != nil {
|
|
||||||
return ctx, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Explicit nonce check is also needed in case of multiple txs with same nonce not being handled
|
|
||||||
if err := checkNonce(ctx, ak, ethTxMsg, senderAddr); err != nil {
|
|
||||||
return ctx, err
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Recover and catch out of gas error
|
|
||||||
defer func() {
|
|
||||||
if r := recover(); r != nil {
|
|
||||||
switch rType := r.(type) {
|
|
||||||
case sdk.ErrorOutOfGas:
|
|
||||||
err = sdkerrors.Wrapf(
|
|
||||||
sdkerrors.ErrOutOfGas,
|
|
||||||
"out of gas in location: %v; gasUsed: %d",
|
|
||||||
rType.Descriptor, ctx.GasMeter().GasConsumed(),
|
|
||||||
)
|
|
||||||
default:
|
|
||||||
panic(r)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}()
|
|
||||||
|
|
||||||
// Fetch sender account from signature
|
|
||||||
senderAcc, err := auth.GetSignerAcc(ctx, ak, senderAddr)
|
|
||||||
if err != nil {
|
|
||||||
return ctx, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Charge sender for gas up to limit
|
|
||||||
if ethTxMsg.Data.GasLimit != 0 {
|
|
||||||
// Cost calculates the fees paid to validators based on gas limit and price
|
|
||||||
cost := new(big.Int).Mul(ethTxMsg.Data.Price, new(big.Int).SetUint64(ethTxMsg.Data.GasLimit))
|
|
||||||
|
|
||||||
feeAmt := sdk.NewCoins(
|
|
||||||
sdk.NewCoin(emint.DenomDefault, sdk.NewIntFromBigInt(cost)),
|
|
||||||
)
|
|
||||||
|
|
||||||
err = auth.DeductFees(sk, ctx, senderAcc, feeAmt)
|
|
||||||
if err != nil {
|
|
||||||
return ctx, err
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Set gas meter after ante handler to ignore gaskv costs
|
|
||||||
newCtx = auth.SetGasMeter(sim, ctx, ethTxMsg.Data.GasLimit)
|
|
||||||
|
|
||||||
gas, _ := ethcore.IntrinsicGas(ethTxMsg.Data.Payload, ethTxMsg.To() == nil, true)
|
|
||||||
newCtx.GasMeter().ConsumeGas(gas, "eth intrinsic gas")
|
|
||||||
|
|
||||||
// Increment sequence of sender
|
|
||||||
acc := ak.GetAccount(ctx, senderAddr)
|
|
||||||
if err := acc.SetSequence(acc.GetSequence() + 1); err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
ak.SetAccount(ctx, acc)
|
|
||||||
|
|
||||||
return newCtx, nil
|
|
||||||
}
|
|
||||||
|
|
||||||
func validateEthTxCheckTx(
|
|
||||||
ctx sdk.Context, ak auth.AccountKeeper, ethTxMsg *evmtypes.MsgEthereumTx,
|
|
||||||
) (sdk.AccAddress, error) {
|
|
||||||
// Validate sufficient fees have been provided that meet a minimum threshold
|
|
||||||
// defined by the proposer (for mempool purposes during CheckTx).
|
|
||||||
if err := ensureSufficientMempoolFees(ctx, ethTxMsg); err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// validate enough intrinsic gas
|
|
||||||
if err := validateIntrinsicGas(ethTxMsg); err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
|
|
||||||
signer, err := validateSignature(ctx, ethTxMsg)
|
|
||||||
if err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// validate account (nonce and balance checks)
|
|
||||||
if err := validateAccount(ctx, ak, ethTxMsg, signer); err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
|
|
||||||
return sdk.AccAddress(signer.Bytes()), nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Validates signature and returns sender address
|
|
||||||
func validateSignature(ctx sdk.Context, ethTxMsg *evmtypes.MsgEthereumTx) (sdk.AccAddress, error) {
|
|
||||||
// parse the chainID from a string to a base-10 integer
|
|
||||||
chainID, ok := new(big.Int).SetString(ctx.ChainID(), 10)
|
|
||||||
if !ok {
|
|
||||||
return nil, sdkerrors.Wrap(emint.ErrInvalidChainID, ctx.ChainID())
|
|
||||||
}
|
|
||||||
|
|
||||||
// validate sender/signature
|
|
||||||
signer, err := ethTxMsg.VerifySig(chainID)
|
|
||||||
if err != nil {
|
|
||||||
return nil, sdkerrors.Wrap(err, "signature verification failed")
|
|
||||||
}
|
|
||||||
|
|
||||||
return sdk.AccAddress(signer.Bytes()), nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// validateIntrinsicGas validates that the Ethereum tx message has enough to
|
|
||||||
// cover intrinsic gas. 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 of 21000 plus any cost inccured by additional bytes of data
|
|
||||||
// supplied with the transaction.
|
|
||||||
func validateIntrinsicGas(ethTxMsg *evmtypes.MsgEthereumTx) error {
|
|
||||||
gas, err := ethcore.IntrinsicGas(ethTxMsg.Data.Payload, ethTxMsg.To() == nil, true)
|
|
||||||
if err != nil {
|
|
||||||
return sdkerrors.Wrap(err, "failed to compute intrinsic gas cost")
|
|
||||||
}
|
|
||||||
|
|
||||||
if ethTxMsg.Data.GasLimit < gas {
|
|
||||||
return fmt.Errorf(
|
|
||||||
"intrinsic gas too low: %d < %d", ethTxMsg.Data.GasLimit, gas,
|
|
||||||
)
|
|
||||||
}
|
|
||||||
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// validateAccount validates the account nonce and that the account has enough
|
|
||||||
// funds to cover the tx cost.
|
|
||||||
func validateAccount(
|
|
||||||
ctx sdk.Context, ak auth.AccountKeeper, ethTxMsg *evmtypes.MsgEthereumTx, signer sdk.AccAddress,
|
|
||||||
) error {
|
|
||||||
|
|
||||||
acc := ak.GetAccount(ctx, signer)
|
|
||||||
|
|
||||||
// on InitChain make sure account number == 0
|
|
||||||
if ctx.BlockHeight() == 0 && acc.GetAccountNumber() != 0 {
|
|
||||||
return sdkerrors.Wrapf(
|
|
||||||
sdkerrors.ErrInvalidSequence,
|
|
||||||
"invalid account number for height zero (got %d)", acc.GetAccountNumber(),
|
|
||||||
)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Validate nonce is correct
|
|
||||||
if err := checkNonce(ctx, ak, ethTxMsg, signer); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// validate sender has enough funds
|
|
||||||
balance := acc.GetCoins().AmountOf(emint.DenomDefault)
|
|
||||||
if balance.BigInt().Cmp(ethTxMsg.Cost()) < 0 {
|
|
||||||
return sdkerrors.Wrapf(
|
|
||||||
sdkerrors.ErrInsufficientFunds,
|
|
||||||
"%s < %s%s", balance.String(), ethTxMsg.Cost().String(), emint.DenomDefault,
|
|
||||||
)
|
|
||||||
}
|
|
||||||
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
func checkNonce(
|
|
||||||
ctx sdk.Context, ak auth.AccountKeeper, ethTxMsg *evmtypes.MsgEthereumTx, signer sdk.AccAddress,
|
|
||||||
) error {
|
|
||||||
acc := ak.GetAccount(ctx, signer)
|
|
||||||
// Validate the transaction nonce is valid (equivalent to the sender account’s
|
|
||||||
// current nonce).
|
|
||||||
seq := acc.GetSequence()
|
|
||||||
if ethTxMsg.Data.AccountNonce != seq {
|
|
||||||
return sdkerrors.Wrapf(
|
|
||||||
sdkerrors.ErrInvalidSequence,
|
|
||||||
"got nonce %d, expected %d", ethTxMsg.Data.AccountNonce, seq,
|
|
||||||
)
|
|
||||||
}
|
|
||||||
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// ensureSufficientMempoolFees verifies that enough fees have been provided by the
|
|
||||||
// Ethereum transaction that meet the minimum threshold set by the block
|
|
||||||
// proposer.
|
|
||||||
//
|
|
||||||
// NOTE: This should only be ran during a CheckTx mode.
|
|
||||||
func ensureSufficientMempoolFees(ctx sdk.Context, ethTxMsg *evmtypes.MsgEthereumTx) error {
|
|
||||||
// fee = GP * GL
|
|
||||||
fee := sdk.NewDecCoinFromCoin(sdk.NewInt64Coin(emint.DenomDefault, ethTxMsg.Fee().Int64()))
|
|
||||||
|
|
||||||
minGasPrices := ctx.MinGasPrices()
|
|
||||||
allGTE := true
|
|
||||||
for _, v := range minGasPrices {
|
|
||||||
if !fee.IsGTE(v) {
|
|
||||||
allGTE = false
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// it is assumed that the minimum fees will only include the single valid denom
|
|
||||||
if !ctx.MinGasPrices().IsZero() && !allGTE {
|
|
||||||
// reject the transaction that does not meet the minimum fee
|
|
||||||
return sdkerrors.Wrapf(
|
|
||||||
sdkerrors.ErrInsufficientFee,
|
|
||||||
"got: %q required: %q", fee, ctx.MinGasPrices(),
|
|
||||||
)
|
|
||||||
}
|
|
||||||
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
@ -55,7 +55,7 @@ func (suite *AnteTestSuite) TestValidEthTx() {
|
|||||||
to := ethcmn.BytesToAddress(addr2.Bytes())
|
to := ethcmn.BytesToAddress(addr2.Bytes())
|
||||||
amt := big.NewInt(32)
|
amt := big.NewInt(32)
|
||||||
gas := big.NewInt(20)
|
gas := big.NewInt(20)
|
||||||
ethMsg := evmtypes.NewMsgEthereumTx(0, &to, amt, 22000, gas, []byte("test"))
|
ethMsg := evmtypes.NewMsgEthereumTx(0, &to, amt, 34910, gas, []byte("test"))
|
||||||
|
|
||||||
tx := newTestEthTx(suite.ctx, ethMsg, priv1)
|
tx := newTestEthTx(suite.ctx, ethMsg, priv1)
|
||||||
requireValidTx(suite.T(), suite.anteHandler, suite.ctx, tx, false)
|
requireValidTx(suite.T(), suite.anteHandler, suite.ctx, tx, false)
|
||||||
|
11
app/ante/doc.go
Normal file
11
app/ante/doc.go
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
/*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.
|
||||||
|
*/
|
||||||
|
package ante
|
361
app/ante/eth.go
Normal file
361
app/ante/eth.go
Normal file
@ -0,0 +1,361 @@
|
|||||||
|
package ante
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"math/big"
|
||||||
|
|
||||||
|
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||||
|
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
|
||||||
|
"github.com/cosmos/cosmos-sdk/x/auth"
|
||||||
|
authante "github.com/cosmos/cosmos-sdk/x/auth/ante"
|
||||||
|
"github.com/cosmos/cosmos-sdk/x/auth/types"
|
||||||
|
|
||||||
|
emint "github.com/cosmos/ethermint/types"
|
||||||
|
evmtypes "github.com/cosmos/ethermint/x/evm/types"
|
||||||
|
|
||||||
|
ethcore "github.com/ethereum/go-ethereum/core"
|
||||||
|
)
|
||||||
|
|
||||||
|
// EthSetupContextDecorator sets the infinite GasMeter in the Context and wraps
|
||||||
|
// the next AnteHandler with a defer clause to recover from any downstream
|
||||||
|
// OutOfGas panics in the AnteHandler chain to return an error with information
|
||||||
|
// on gas provided and gas used.
|
||||||
|
// CONTRACT: Must be first decorator in the chain
|
||||||
|
// CONTRACT: Tx must implement GasTx interface
|
||||||
|
type EthSetupContextDecorator struct{}
|
||||||
|
|
||||||
|
// NewEthSetupContextDecorator creates a new EthSetupContextDecorator
|
||||||
|
func NewEthSetupContextDecorator() EthSetupContextDecorator {
|
||||||
|
return EthSetupContextDecorator{}
|
||||||
|
}
|
||||||
|
|
||||||
|
// AnteHandle sets the infinite gas meter to done to ignore costs in AnteHandler checks.
|
||||||
|
// This is undone at the EthGasConsumeDecorator, where the context is set with the
|
||||||
|
// ethereum tx GasLimit.
|
||||||
|
func (escd EthSetupContextDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
|
||||||
|
ctx = ctx.WithBlockGasMeter(sdk.NewInfiniteGasMeter())
|
||||||
|
|
||||||
|
// all transactions must implement GasTx
|
||||||
|
gasTx, ok := tx.(authante.GasTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrap(sdkerrors.ErrTxDecode, "Tx must be GasTx")
|
||||||
|
}
|
||||||
|
|
||||||
|
// Decorator will catch an OutOfGasPanic caused in the next antehandler
|
||||||
|
// AnteHandlers must have their own defer/recover in order for the BaseApp
|
||||||
|
// to know how much gas was used! This is because the GasMeter is created in
|
||||||
|
// the AnteHandler, but if it panics the context won't be set properly in
|
||||||
|
// runTx's recover call.
|
||||||
|
defer func() {
|
||||||
|
if r := recover(); r != nil {
|
||||||
|
switch rType := r.(type) {
|
||||||
|
case sdk.ErrorOutOfGas:
|
||||||
|
log := fmt.Sprintf(
|
||||||
|
"out of gas in location: %v; gasLimit: %d, gasUsed: %d",
|
||||||
|
rType.Descriptor, gasTx.GetGas(), ctx.GasMeter().GasConsumed(),
|
||||||
|
)
|
||||||
|
err = sdkerrors.Wrap(sdkerrors.ErrOutOfGas, log)
|
||||||
|
default:
|
||||||
|
panic(r)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}()
|
||||||
|
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// EthMempoolFeeDecorator validates that sufficient fees have been provided that
|
||||||
|
// meet a minimum threshold defined by the proposer (for mempool purposes during CheckTx).
|
||||||
|
type EthMempoolFeeDecorator struct{}
|
||||||
|
|
||||||
|
// NewEthMempoolFeeDecorator creates a new EthMempoolFeeDecorator
|
||||||
|
func NewEthMempoolFeeDecorator() EthMempoolFeeDecorator {
|
||||||
|
return EthMempoolFeeDecorator{}
|
||||||
|
}
|
||||||
|
|
||||||
|
// AnteHandle verifies that enough fees have been provided by the
|
||||||
|
// Ethereum transaction that meet the minimum threshold set by the block
|
||||||
|
// proposer.
|
||||||
|
//
|
||||||
|
// NOTE: This should only be run during a CheckTx mode.
|
||||||
|
func (emfd EthMempoolFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
|
||||||
|
if !ctx.IsCheckTx() {
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
msgEthTx, ok := tx.(evmtypes.MsgEthereumTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
|
}
|
||||||
|
|
||||||
|
// fee = GP * GL
|
||||||
|
fee := sdk.NewInt64DecCoin(emint.DenomDefault, msgEthTx.Fee().Int64())
|
||||||
|
|
||||||
|
minGasPrices := ctx.MinGasPrices()
|
||||||
|
|
||||||
|
allGTE := true
|
||||||
|
for _, v := range minGasPrices {
|
||||||
|
if !fee.IsGTE(v) {
|
||||||
|
allGTE = false
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// it is assumed that the minimum fees will only include the single valid denom
|
||||||
|
if !ctx.MinGasPrices().IsZero() && !allGTE {
|
||||||
|
// reject the transaction that does not meet the minimum fee
|
||||||
|
return ctx, sdkerrors.Wrap(
|
||||||
|
sdkerrors.ErrInsufficientFee,
|
||||||
|
fmt.Sprintf("insufficient fee, got: %q required: %q", fee, ctx.MinGasPrices()),
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// EthSigVerificationDecorator validates an ethereum signature
|
||||||
|
type EthSigVerificationDecorator struct{}
|
||||||
|
|
||||||
|
// NewEthSigVerificationDecorator creates a new EthSigVerificationDecorator
|
||||||
|
func NewEthSigVerificationDecorator() EthSigVerificationDecorator {
|
||||||
|
return EthSigVerificationDecorator{}
|
||||||
|
}
|
||||||
|
|
||||||
|
// AnteHandle validates the signature and returns sender address
|
||||||
|
func (esvd EthSigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
|
||||||
|
msgEthTx, ok := tx.(evmtypes.MsgEthereumTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
|
}
|
||||||
|
|
||||||
|
// parse the chainID from a string to a base-10 integer
|
||||||
|
chainID, ok := new(big.Int).SetString(ctx.ChainID(), 10)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrap(emint.ErrInvalidChainID, ctx.ChainID())
|
||||||
|
}
|
||||||
|
|
||||||
|
// validate sender/signature
|
||||||
|
// NOTE: signer is retrieved from the transaction on the next AnteDecorator
|
||||||
|
_, err = msgEthTx.VerifySig(chainID)
|
||||||
|
if err != nil {
|
||||||
|
return ctx, sdkerrors.Wrap(sdkerrors.ErrUnauthorized, fmt.Sprintf("signature verification failed"))
|
||||||
|
}
|
||||||
|
|
||||||
|
return next(ctx, msgEthTx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// AccountVerificationDecorator validates an account balance checks
|
||||||
|
type AccountVerificationDecorator struct {
|
||||||
|
ak auth.AccountKeeper
|
||||||
|
}
|
||||||
|
|
||||||
|
// NewAccountVerificationDecorator creates a new AccountVerificationDecorator
|
||||||
|
func NewAccountVerificationDecorator(ak auth.AccountKeeper) AccountVerificationDecorator {
|
||||||
|
return AccountVerificationDecorator{
|
||||||
|
ak: ak,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// AnteHandle validates the signature and returns sender address
|
||||||
|
func (avd AccountVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
|
||||||
|
if !ctx.IsCheckTx() {
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
msgEthTx, ok := tx.(evmtypes.MsgEthereumTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
|
}
|
||||||
|
|
||||||
|
// sender address should be in the tx cache
|
||||||
|
address := msgEthTx.From()
|
||||||
|
if address == nil {
|
||||||
|
panic("sender address is nil")
|
||||||
|
}
|
||||||
|
|
||||||
|
acc := avd.ak.GetAccount(ctx, address)
|
||||||
|
if acc == nil {
|
||||||
|
return ctx, fmt.Errorf("account %s is nil", address)
|
||||||
|
}
|
||||||
|
|
||||||
|
// on InitChain make sure account number == 0
|
||||||
|
if ctx.BlockHeight() == 0 && acc.GetAccountNumber() != 0 {
|
||||||
|
return ctx, sdkerrors.Wrapf(
|
||||||
|
sdkerrors.ErrInvalidSequence,
|
||||||
|
"invalid account number for height zero (got %d)", acc.GetAccountNumber(),
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
// validate sender has enough funds
|
||||||
|
balance := acc.GetCoins().AmountOf(emint.DenomDefault)
|
||||||
|
if balance.BigInt().Cmp(msgEthTx.Cost()) < 0 {
|
||||||
|
return ctx, sdkerrors.Wrapf(
|
||||||
|
sdkerrors.ErrInsufficientFunds,
|
||||||
|
"%s < %s%s", balance.String(), msgEthTx.Cost().String(), emint.DenomDefault,
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// NonceVerificationDecorator that the nonce matches
|
||||||
|
type NonceVerificationDecorator struct {
|
||||||
|
ak auth.AccountKeeper
|
||||||
|
}
|
||||||
|
|
||||||
|
// NewNonceVerificationDecorator creates a new NonceVerificationDecorator
|
||||||
|
func NewNonceVerificationDecorator(ak auth.AccountKeeper) NonceVerificationDecorator {
|
||||||
|
return NonceVerificationDecorator{
|
||||||
|
ak: ak,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// AnteHandle validates that the transaction nonce is valid (equivalent to the sender account’s
|
||||||
|
// current nonce).
|
||||||
|
func (nvd NonceVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
|
||||||
|
msgEthTx, ok := tx.(evmtypes.MsgEthereumTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
|
}
|
||||||
|
|
||||||
|
// sender address should be in the tx cache
|
||||||
|
address := msgEthTx.From()
|
||||||
|
if address == nil {
|
||||||
|
panic("sender address is nil")
|
||||||
|
}
|
||||||
|
|
||||||
|
acc := nvd.ak.GetAccount(ctx, address)
|
||||||
|
if acc == nil {
|
||||||
|
return ctx, fmt.Errorf("account %s is nil", address)
|
||||||
|
}
|
||||||
|
|
||||||
|
seq := acc.GetSequence()
|
||||||
|
if msgEthTx.Data.AccountNonce != seq {
|
||||||
|
return ctx, sdkerrors.Wrap(
|
||||||
|
sdkerrors.ErrInvalidSequence,
|
||||||
|
fmt.Sprintf("invalid nonce; got %d, expected %d", msgEthTx.Data.AccountNonce, seq),
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// EthGasConsumeDecorator validates enough intrinsic gas for the transaction and
|
||||||
|
// gas consumption.
|
||||||
|
type EthGasConsumeDecorator struct {
|
||||||
|
ak auth.AccountKeeper
|
||||||
|
sk types.SupplyKeeper
|
||||||
|
}
|
||||||
|
|
||||||
|
// NewEthGasConsumeDecorator creates a new EthGasConsumeDecorator
|
||||||
|
func NewEthGasConsumeDecorator(ak auth.AccountKeeper, sk types.SupplyKeeper) EthGasConsumeDecorator {
|
||||||
|
return EthGasConsumeDecorator{
|
||||||
|
ak: ak,
|
||||||
|
sk: sk,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// 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 of 21000 plus any cost inccured by additional bytes of data
|
||||||
|
// supplied with the transaction.
|
||||||
|
func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
|
||||||
|
msgEthTx, ok := tx.(evmtypes.MsgEthereumTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
|
}
|
||||||
|
|
||||||
|
// sender address should be in the tx cache
|
||||||
|
address := msgEthTx.From()
|
||||||
|
if address == nil {
|
||||||
|
panic("sender address is nil")
|
||||||
|
}
|
||||||
|
|
||||||
|
// Fetch sender account from signature
|
||||||
|
senderAcc, err := auth.GetSignerAcc(ctx, egcd.ak, address)
|
||||||
|
if err != nil {
|
||||||
|
return ctx, err
|
||||||
|
}
|
||||||
|
|
||||||
|
if senderAcc == nil {
|
||||||
|
return ctx, fmt.Errorf("sender account %s is nil", address)
|
||||||
|
}
|
||||||
|
|
||||||
|
gasLimit := msgEthTx.GetGas()
|
||||||
|
gas, err := ethcore.IntrinsicGas(msgEthTx.Data.Payload, msgEthTx.To() == nil, true)
|
||||||
|
if err != nil {
|
||||||
|
return ctx, sdkerrors.Wrap(err, "failed to compute intrinsic gas cost")
|
||||||
|
}
|
||||||
|
|
||||||
|
// intrinsic gas verification during CheckTx
|
||||||
|
if ctx.IsCheckTx() && gasLimit < gas {
|
||||||
|
return ctx, fmt.Errorf("intrinsic gas too low: %d < %d", gasLimit, gas)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Charge sender for gas up to limit
|
||||||
|
if gasLimit != 0 {
|
||||||
|
// Cost calculates the fees paid to validators based on gas limit and price
|
||||||
|
cost := new(big.Int).Mul(msgEthTx.Data.Price, new(big.Int).SetUint64(gasLimit))
|
||||||
|
|
||||||
|
feeAmt := sdk.NewCoins(
|
||||||
|
sdk.NewCoin(emint.DenomDefault, sdk.NewIntFromBigInt(cost)),
|
||||||
|
)
|
||||||
|
|
||||||
|
err = auth.DeductFees(egcd.sk, ctx, senderAcc, feeAmt)
|
||||||
|
if err != nil {
|
||||||
|
return ctx, err
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Set gas meter after ante handler to ignore gaskv costs
|
||||||
|
newCtx = auth.SetGasMeter(simulate, ctx, gasLimit)
|
||||||
|
newCtx.GasMeter().ConsumeGas(gas, "eth intrinsic gas")
|
||||||
|
|
||||||
|
return next(newCtx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// IncrementSenderSequenceDecorator increments the sequence of the signers. The
|
||||||
|
// main difference with the SDK's IncrementSequenceDecorator is that the MsgEthereumTx
|
||||||
|
// doesn't implement the SigVerifiableTx interface.
|
||||||
|
//
|
||||||
|
// CONTRACT: must be called after msg.VerifySig in order to cache the sender address.
|
||||||
|
type IncrementSenderSequenceDecorator struct {
|
||||||
|
ak auth.AccountKeeper
|
||||||
|
}
|
||||||
|
|
||||||
|
// NewIncrementSenderSequenceDecorator creates a new IncrementSenderSequenceDecorator.
|
||||||
|
func NewIncrementSenderSequenceDecorator(ak auth.AccountKeeper) IncrementSenderSequenceDecorator {
|
||||||
|
return IncrementSenderSequenceDecorator{
|
||||||
|
ak: ak,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// AnteHandle handles incrementing the sequence of the sender.
|
||||||
|
func (issd IncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
|
||||||
|
// no need to increment sequence on RecheckTx
|
||||||
|
if ctx.IsReCheckTx() && !simulate {
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
||||||
|
|
||||||
|
// get and set account must be called with an infinite gas meter in order to prevent
|
||||||
|
// additional gas from being deducted.
|
||||||
|
oldCtx := ctx.WithBlockGasMeter(sdk.NewInfiniteGasMeter())
|
||||||
|
|
||||||
|
msgEthTx, ok := tx.(evmtypes.MsgEthereumTx)
|
||||||
|
if !ok {
|
||||||
|
return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
|
||||||
|
}
|
||||||
|
|
||||||
|
// increment sequence of all signers
|
||||||
|
for _, addr := range msgEthTx.GetSigners() {
|
||||||
|
acc := issd.ak.GetAccount(oldCtx, addr)
|
||||||
|
if err := acc.SetSequence(acc.GetSequence() + 1); err != nil {
|
||||||
|
panic(err)
|
||||||
|
}
|
||||||
|
issd.ak.SetAccount(oldCtx, acc)
|
||||||
|
}
|
||||||
|
|
||||||
|
return next(ctx, tx, simulate)
|
||||||
|
}
|
@ -8,12 +8,18 @@ import (
|
|||||||
tmtypes "github.com/tendermint/tendermint/types"
|
tmtypes "github.com/tendermint/tendermint/types"
|
||||||
|
|
||||||
"github.com/cosmos/cosmos-sdk/codec"
|
"github.com/cosmos/cosmos-sdk/codec"
|
||||||
|
"github.com/cosmos/cosmos-sdk/simapp"
|
||||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||||
"github.com/cosmos/cosmos-sdk/x/slashing"
|
"github.com/cosmos/cosmos-sdk/x/slashing"
|
||||||
"github.com/cosmos/cosmos-sdk/x/staking"
|
"github.com/cosmos/cosmos-sdk/x/staking"
|
||||||
"github.com/cosmos/cosmos-sdk/x/staking/exported"
|
"github.com/cosmos/cosmos-sdk/x/staking/exported"
|
||||||
)
|
)
|
||||||
|
|
||||||
|
// NewDefaultGenesisState generates the default state for the application.
|
||||||
|
func NewDefaultGenesisState() simapp.GenesisState {
|
||||||
|
return ModuleBasics.DefaultGenesis()
|
||||||
|
}
|
||||||
|
|
||||||
// ExportAppStateAndValidators exports the state of the application for a genesis
|
// ExportAppStateAndValidators exports the state of the application for a genesis
|
||||||
// file.
|
// file.
|
||||||
func (app *EthermintApp) ExportAppStateAndValidators(
|
func (app *EthermintApp) ExportAppStateAndValidators(
|
||||||
|
@ -6,16 +6,16 @@ import (
|
|||||||
dbm "github.com/tendermint/tm-db"
|
dbm "github.com/tendermint/tm-db"
|
||||||
|
|
||||||
"github.com/cosmos/cosmos-sdk/codec"
|
"github.com/cosmos/cosmos-sdk/codec"
|
||||||
"github.com/cosmos/cosmos-sdk/simapp"
|
|
||||||
)
|
)
|
||||||
|
|
||||||
// Setup initializes a new EthermintApp. A Nop logger is set in EthermintApp.
|
// Setup initializes a new EthermintApp. A Nop logger is set in EthermintApp.
|
||||||
func Setup(isCheckTx bool) *EthermintApp {
|
func Setup(isCheckTx bool) *EthermintApp {
|
||||||
db := dbm.NewMemDB()
|
db := dbm.NewMemDB()
|
||||||
app := NewEthermintApp(log.NewNopLogger(), db, nil, true, 0)
|
app := NewEthermintApp(log.NewNopLogger(), db, nil, true, 0)
|
||||||
|
|
||||||
if !isCheckTx {
|
if !isCheckTx {
|
||||||
// init chain must be called to stop deliverState from being nil
|
// init chain must be called to stop deliverState from being nil
|
||||||
genesisState := simapp.NewDefaultGenesisState()
|
genesisState := NewDefaultGenesisState()
|
||||||
stateBytes, err := codec.MarshalJSONIndent(app.Codec(), genesisState)
|
stateBytes, err := codec.MarshalJSONIndent(app.Codec(), genesisState)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
panic(err)
|
panic(err)
|
||||||
|
@ -157,11 +157,14 @@ func (msg MsgEthereumTx) GetMsgs() []sdk.Msg {
|
|||||||
// GetSigners returns the expected signers for an Ethereum transaction message.
|
// GetSigners returns the expected signers for an Ethereum transaction message.
|
||||||
// For such a message, there should exist only a single 'signer'.
|
// For such a message, there should exist only a single 'signer'.
|
||||||
//
|
//
|
||||||
// NOTE: This method cannot be used as a chain ID is needed to recover the signer
|
// NOTE: This method panics if 'VerifySig' hasn't been called first.
|
||||||
// from the signature. Use 'VerifySig' instead.
|
|
||||||
func (msg MsgEthereumTx) GetSigners() []sdk.AccAddress {
|
func (msg MsgEthereumTx) GetSigners() []sdk.AccAddress {
|
||||||
|
sender := msg.From()
|
||||||
|
if sender.Empty() {
|
||||||
panic("must use 'VerifySig' with a chain ID to get the signer")
|
panic("must use 'VerifySig' with a chain ID to get the signer")
|
||||||
}
|
}
|
||||||
|
return []sdk.AccAddress{sender}
|
||||||
|
}
|
||||||
|
|
||||||
// GetSignBytes returns the Amino bytes of an Ethereum transaction message used
|
// GetSignBytes returns the Amino bytes of an Ethereum transaction message used
|
||||||
// for signing.
|
// for signing.
|
||||||
@ -271,11 +274,9 @@ func (msg *MsgEthereumTx) VerifySig(chainID *big.Int) (ethcmn.Address, error) {
|
|||||||
return sender, nil
|
return sender, nil
|
||||||
}
|
}
|
||||||
|
|
||||||
// Cost returns amount + gasprice * gaslimit.
|
// GetGas implements the GasTx interface. It returns the GasLimit of the transaction.
|
||||||
func (msg MsgEthereumTx) Cost() *big.Int {
|
func (msg MsgEthereumTx) GetGas() uint64 {
|
||||||
total := msg.Fee()
|
return msg.Data.GasLimit
|
||||||
total.Add(total, msg.Data.Amount)
|
|
||||||
return total
|
|
||||||
}
|
}
|
||||||
|
|
||||||
// Fee returns gasprice * gaslimit.
|
// Fee returns gasprice * gaslimit.
|
||||||
@ -288,6 +289,30 @@ func (msg *MsgEthereumTx) ChainID() *big.Int {
|
|||||||
return deriveChainID(msg.Data.V)
|
return deriveChainID(msg.Data.V)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// Cost returns amount + gasprice * gaslimit.
|
||||||
|
func (msg MsgEthereumTx) Cost() *big.Int {
|
||||||
|
total := msg.Fee()
|
||||||
|
total.Add(total, msg.Data.Amount)
|
||||||
|
return total
|
||||||
|
}
|
||||||
|
|
||||||
|
// From loads the ethereum sender address from the sigcache and returns an
|
||||||
|
// sdk.AccAddress from its bytes
|
||||||
|
func (msg *MsgEthereumTx) From() sdk.AccAddress {
|
||||||
|
sc := msg.from.Load()
|
||||||
|
if sc == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
sigCache := sc.(sigCache)
|
||||||
|
|
||||||
|
if len(sigCache.from.Bytes()) == 0 {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
return sdk.AccAddress(sigCache.from.Bytes())
|
||||||
|
}
|
||||||
|
|
||||||
// deriveChainID derives the chain id from the given v parameter
|
// deriveChainID derives the chain id from the given v parameter
|
||||||
func deriveChainID(v *big.Int) *big.Int {
|
func deriveChainID(v *big.Int) *big.Int {
|
||||||
if v.BitLen() <= 64 {
|
if v.BitLen() <= 64 {
|
||||||
|
Loading…
Reference in New Issue
Block a user