eth: FIP-0055: implement final version of transitory delegated signature.

chain/types/ethtypes/eth_transactions.go

@@ -117,41 +117,29 @@ func EthTxArgsFromUnsignedEthMessage(msg *types.Message) (EthTxArgs, error) {
 		default:
 			return EthTxArgs{}, fmt.Errorf("unsupported EAM method")
 		}
-	} else {
+	} else if msg.Method == builtintypes.MethodsEVM.InvokeContract {
 		addr, err := EthAddressFromFilecoinAddress(msg.To)
 		if err != nil {
 			return EthTxArgs{}, err
 		}
 		to = &addr
 
-		if len(msg.Params) == 0 {
-			if msg.Method != builtintypes.MethodSend {
-				return EthTxArgs{}, xerrors.Errorf("cannot invoke method %d on non-EAM actor without params", msg.Method)
-			}
-		} else {
-			if msg.Method != builtintypes.MethodsEVM.InvokeContract {
-				return EthTxArgs{},
-					xerrors.Errorf("invalid methodnum %d: only allowed non-send method is InvokeContract(%d)",
-						msg.Method,
-						builtintypes.MethodsEVM.InvokeContract)
-			}
-
+		if len(msg.Params) > 0 {
 			params, err = cbg.ReadByteArray(paramsReader, uint64(len(msg.Params)))
 			if err != nil {
 				return EthTxArgs{}, xerrors.Errorf("failed to read params byte array: %w", err)
 			}
 		}
+	} else {
+		return EthTxArgs{},
+			xerrors.Errorf("invalid methodnum %d: only allowed method is InvokeContract(%d)",
+				msg.Method, builtintypes.MethodsEVM.InvokeContract)
 	}
 
 	if paramsReader.Len() != 0 {
 		return EthTxArgs{}, xerrors.Errorf("extra data found in params")
 	}
 
-	if len(params) == 0 && msg.Method != builtintypes.MethodSend {
-		// Otherwise, we don't get a guaranteed round-trip.
-		return EthTxArgs{}, xerrors.Errorf("msgs with empty parameters from an eth-account must be Sends (MethodNum: %d)", msg.Method)
-	}
-
 	return EthTxArgs{
 		ChainID:              build.Eip155ChainId,
 		Nonce:                int(msg.Nonce),
@@ -170,9 +158,9 @@ func (tx *EthTxArgs) ToUnsignedMessage(from address.Address) (*types.Message, er
 	}
 
 	var err error
-	method := builtintypes.MethodSend
 	var params []byte
 	var to address.Address
+	method := builtintypes.MethodsEVM.InvokeContract
 	// nil indicates the EAM, only CreateExternal is allowed
 	if tx.To == nil {
 		to = builtintypes.EthereumAddressManagerActorAddr
@@ -192,18 +180,11 @@ func (tx *EthTxArgs) ToUnsignedMessage(from address.Address) (*types.Message, er
 		if err != nil {
 			return nil, xerrors.Errorf("failed to convert To into filecoin addr: %w", err)
 		}
-		if len(tx.Input) == 0 {
-			// Yes, this is redundant, but let's be sure what we're doing
-			method = builtintypes.MethodSend
-			params = make([]byte, 0)
-		} else {
-			// must be InvokeContract
-			method = builtintypes.MethodsEVM.InvokeContract
+		if len(tx.Input) > 0 {
 			buf := new(bytes.Buffer)
 			if err = cbg.WriteByteArray(buf, tx.Input); err != nil {
 				return nil, xerrors.Errorf("failed to write input args: %w", err)
 			}
-
 			params = buf.Bytes()
 		}
 	}

itests/eth_account_abstraction_test.go

@@ -24,7 +24,7 @@ import (
 	"github.com/filecoin-project/lotus/itests/kit"
 )
 
-// TestEthAccountAbstraction goes over the account abstraction workflow:
+// TestEthAccountAbstraction goes over the placeholder creation and promotion workflow:
 // - an placeholder is created when it receives a message
 // - the placeholder turns into an EOA when it sends a message
 func TestEthAccountAbstraction(t *testing.T) {
@@ -67,7 +67,8 @@ func TestEthAccountAbstraction(t *testing.T) {
 	msgFromPlaceholder := &types.Message{
 		From: placeholderAddress,
 		// self-send because an "eth tx payload" can't be to a filecoin address?
-		To: placeholderAddress,
+		To:     placeholderAddress,
+		Method: builtin2.MethodsEVM.InvokeContract,
 	}
 	msgFromPlaceholder, err = client.GasEstimateMessageGas(ctx, msgFromPlaceholder, nil, types.EmptyTSK)
 	require.NoError(t, err)
@@ -100,9 +101,10 @@ func TestEthAccountAbstraction(t *testing.T) {
 	// Send another message, it should succeed without any code CID changes
 
 	msgFromPlaceholder = &types.Message{
-		From:  placeholderAddress,
-		To:    placeholderAddress,
-		Nonce: 1,
+		From:   placeholderAddress,
+		To:     placeholderAddress,
+		Method: builtin2.MethodsEVM.InvokeContract,
+		Nonce:  1,
 	}
 
 	msgFromPlaceholder, err = client.GasEstimateMessageGas(ctx, msgFromPlaceholder, nil, types.EmptyTSK)
@@ -152,9 +154,10 @@ func TestEthAccountAbstractionFailure(t *testing.T) {
 
 	// create a placeholder actor at the target address
 	msgCreatePlaceholder := &types.Message{
-		From:  client.DefaultKey.Address,
-		To:    placeholderAddress,
-		Value: abi.TokenAmount(types.MustParseFIL("100")),
+		From:   client.DefaultKey.Address,
+		To:     placeholderAddress,
+		Value:  abi.TokenAmount(types.MustParseFIL("100")),
+		Method: builtin2.MethodsEVM.InvokeContract,
 	}
 	smCreatePlaceholder, err := client.MpoolPushMessage(ctx, msgCreatePlaceholder, nil)
 	require.NoError(t, err)
@@ -172,9 +175,10 @@ func TestEthAccountAbstractionFailure(t *testing.T) {
 
 	// send a message from the placeholder address
 	msgFromPlaceholder := &types.Message{
-		From:  placeholderAddress,
-		To:    placeholderAddress,
-		Value: abi.TokenAmount(types.MustParseFIL("20")),
+		From:   placeholderAddress,
+		To:     placeholderAddress,
+		Value:  abi.TokenAmount(types.MustParseFIL("20")),
+		Method: builtin2.MethodsEVM.InvokeContract,
 	}
 	msgFromPlaceholder, err = client.GasEstimateMessageGas(ctx, msgFromPlaceholder, nil, types.EmptyTSK)
 	require.NoError(t, err)
@@ -209,10 +213,11 @@ func TestEthAccountAbstractionFailure(t *testing.T) {
 	// Send a valid message now, it should succeed without any code CID changes
 
 	msgFromPlaceholder = &types.Message{
-		From:  placeholderAddress,
-		To:    placeholderAddress,
-		Nonce: 1,
-		Value: abi.NewTokenAmount(1),
+		From:   placeholderAddress,
+		To:     placeholderAddress,
+		Nonce:  1,
+		Value:  abi.NewTokenAmount(1),
+		Method: builtin2.MethodsEVM.InvokeContract,
 	}
 
 	msgFromPlaceholder, err = client.GasEstimateMessageGas(ctx, msgFromPlaceholder, nil, types.EmptyTSK)

itests/fevm_test.go

@@ -8,6 +8,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 
@@ -17,6 +18,7 @@ import (
 	"github.com/filecoin-project/go-state-types/exitcode"
 	"github.com/filecoin-project/go-state-types/manifest"
 
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/chain/types/ethtypes"
@@ -786,3 +788,58 @@ func TestFEVMDestroyCreate2(t *testing.T) {
 	require.Equal(t, ethFromAddr, senderSecondCall)
 
 }
+
+func TestFEVMBareTransferTriggersSmartContractLogic(t *testing.T) {
+	ctx, cancel, client := kit.SetupFEVMTest(t)
+	defer cancel()
+
+	// This contract emits an event on receiving value.
+	filename := "contracts/ValueSender.hex"
+	_, contractAddr := client.EVM().DeployContractFromFilename(ctx, filename)
+
+	accctKey, accntEth, accntFil := client.EVM().NewAccount()
+	kit.SendFunds(ctx, t, client, accntFil, types.FromFil(10))
+
+	contractEth, err := ethtypes.EthAddressFromFilecoinAddress(contractAddr)
+	require.NoError(t, err)
+
+	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
+		From:  &accntEth,
+		To:    &contractEth,
+		Value: ethtypes.EthBigInt(big.NewInt(100)),
+	})
+	require.NoError(t, err)
+
+	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
+	require.NoError(t, err)
+
+	tx := ethtypes.EthTxArgs{
+		ChainID:              build.Eip155ChainId,
+		Value:                big.NewInt(100),
+		Nonce:                0,
+		To:                   &contractEth,
+		MaxFeePerGas:         types.NanoFil,
+		MaxPriorityFeePerGas: big.Int(maxPriorityFeePerGas),
+		GasLimit:             int(gaslimit),
+		V:                    big.Zero(),
+		R:                    big.Zero(),
+		S:                    big.Zero(),
+	}
+
+	client.EVM().SignTransaction(&tx, accctKey.PrivateKey)
+
+	hash := client.EVM().SubmitTransaction(ctx, &tx)
+
+	var receipt *api.EthTxReceipt
+	for i := 0; i < 1000; i++ {
+		receipt, err = client.EthGetTransactionReceipt(ctx, hash)
+		require.NoError(t, err)
+		if receipt != nil {
+			break
+		}
+		time.Sleep(500 * time.Millisecond)
+	}
+
+	// The receive() function emits one log, that's how we know we hit it.
+	require.Len(t, receipt.Logs, 1)
+}

itests/kit/evm.go

@@ -354,7 +354,7 @@ func SetupFEVMTest(t *testing.T) (context.Context, context.CancelFunc, *TestFull
 	return ctx, cancel, client
 }
 
-func (e *EVM) TransferValueOrFail(ctx context.Context, fromAddr address.Address, toAddr address.Address, sendAmount big.Int) {
+func (e *EVM) TransferValueOrFail(ctx context.Context, fromAddr address.Address, toAddr address.Address, sendAmount big.Int) *api.MsgLookup {
 	sendMsg := &types.Message{
 		From:  fromAddr,
 		To:    toAddr,
@@ -365,6 +365,7 @@ func (e *EVM) TransferValueOrFail(ctx context.Context, fromAddr address.Address,
 	mLookup, err := e.StateWaitMsg(ctx, signedMsg.Cid(), 3, api.LookbackNoLimit, true)
 	require.NoError(e.t, err)
 	require.Equal(e.t, exitcode.Ok, mLookup.Receipt.ExitCode)
+	return mLookup
 }
 
 func NewEthFilterBuilder() *EthFilterBuilder {

node/impl/full/eth.go

@@ -761,10 +761,9 @@ func (a *EthModule) ethCallToFilecoinMessage(ctx context.Context, tx ethtypes.Et
 				return nil, fmt.Errorf("failed to encode tx input into a cbor byte-string")
 			}
 			params = buf.Bytes()
-			method = builtintypes.MethodsEVM.InvokeContract
-		} else {
-			method = builtintypes.MethodSend
 		}
+
+		method = builtintypes.MethodsEVM.InvokeContract
 	}
 
 	return &types.Message{