forked from cerc-io/plugeth
eth/tracers: invoke enter/exit on 0-value calls to inex accounts (#23828)
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c576fa153a
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551bd6e721
@ -182,9 +182,14 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
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if !evm.StateDB.Exist(addr) {
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if !isPrecompile && evm.chainRules.IsEIP158 && value.Sign() == 0 {
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// Calling a non existing account, don't do anything, but ping the tracer
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if evm.Config.Debug && evm.depth == 0 {
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evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
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evm.Config.Tracer.CaptureEnd(ret, 0, 0, nil)
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if evm.Config.Debug {
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if evm.depth == 0 {
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evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
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evm.Config.Tracer.CaptureEnd(ret, 0, 0, nil)
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} else {
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evm.Config.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value)
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evm.Config.Tracer.CaptureExit(ret, 0, nil)
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}
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}
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return nil, gas, nil
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}
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@ -120,6 +120,85 @@ type callTracerTest struct {
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Result *callTrace `json:"result"`
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}
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// TestZeroValueToNotExitCall tests the calltracer(s) on the following:
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// Tx to A, A calls B with zero value. B does not already exist.
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// Expected: that enter/exit is invoked and the inner call is shown in the result
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func TestZeroValueToNotExitCall(t *testing.T) {
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var to = common.HexToAddress("0x00000000000000000000000000000000deadbeef")
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privkey, err := crypto.HexToECDSA("0000000000000000deadbeef00000000000000000000000000000000deadbeef")
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if err != nil {
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t.Fatalf("err %v", err)
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}
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signer := types.NewEIP155Signer(big.NewInt(1))
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tx, err := types.SignNewTx(privkey, signer, &types.LegacyTx{
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GasPrice: big.NewInt(0),
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Gas: 50000,
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To: &to,
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})
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if err != nil {
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t.Fatalf("err %v", err)
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}
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origin, _ := signer.Sender(tx)
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txContext := vm.TxContext{
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Origin: origin,
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GasPrice: big.NewInt(1),
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}
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context := vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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Coinbase: common.Address{},
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BlockNumber: new(big.Int).SetUint64(8000000),
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Time: new(big.Int).SetUint64(5),
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Difficulty: big.NewInt(0x30000),
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GasLimit: uint64(6000000),
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}
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var code = []byte{
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byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), // in and outs zero
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byte(vm.DUP1), byte(vm.PUSH1), 0xff, byte(vm.GAS), // value=0,address=0xff, gas=GAS
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byte(vm.CALL),
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}
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var alloc = core.GenesisAlloc{
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to: core.GenesisAccount{
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Nonce: 1,
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Code: code,
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},
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origin: core.GenesisAccount{
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Nonce: 0,
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Balance: big.NewInt(500000000000000),
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},
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}
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_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false)
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// Create the tracer, the EVM environment and run it
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tracer, err := New("callTracer", new(Context))
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if err != nil {
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t.Fatalf("failed to create call tracer: %v", err)
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}
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evm := vm.NewEVM(context, txContext, statedb, params.MainnetChainConfig, vm.Config{Debug: true, Tracer: tracer})
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msg, err := tx.AsMessage(signer, nil)
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if err != nil {
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t.Fatalf("failed to prepare transaction for tracing: %v", err)
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}
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st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
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if _, err = st.TransitionDb(); err != nil {
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t.Fatalf("failed to execute transaction: %v", err)
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}
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// Retrieve the trace result and compare against the etalon
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res, err := tracer.GetResult()
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if err != nil {
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t.Fatalf("failed to retrieve trace result: %v", err)
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}
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have := new(callTrace)
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if err := json.Unmarshal(res, have); err != nil {
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t.Fatalf("failed to unmarshal trace result: %v", err)
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}
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wantStr := `{"type":"CALL","from":"0x682a80a6f560eec50d54e63cbeda1c324c5f8d1b","to":"0x00000000000000000000000000000000deadbeef","value":"0x0","gas":"0x7148","gasUsed":"0x2d0","input":"0x","output":"0x","calls":[{"type":"CALL","from":"0x00000000000000000000000000000000deadbeef","to":"0x00000000000000000000000000000000000000ff","value":"0x0","gas":"0x6cbf","gasUsed":"0x0","input":"0x","output":"0x"}]}`
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want := new(callTrace)
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json.Unmarshal([]byte(wantStr), want)
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if !jsonEqual(have, want) {
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t.Error("have != want")
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}
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}
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func TestPrestateTracerCreate2(t *testing.T) {
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unsignedTx := types.NewTransaction(1, common.HexToAddress("0x00000000000000000000000000000000deadbeef"),
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new(big.Int), 5000000, big.NewInt(1), []byte{})
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