From 9c6b5b904a0ea050a0ffda7cf7b60678b457783d Mon Sep 17 00:00:00 2001 From: Sina Mahmoodi <1591639+s1na@users.noreply.github.com> Date: Sun, 27 Dec 2020 21:57:19 +0100 Subject: [PATCH] eth, eth/tracers: include intrinsic gas in calltracer, expose for all tracers (#22038) * eth/tracers: share tx gas price with js tracer * eth/tracers: use `go generate` * eth/tracers: try with another version of go-bindata * eth/tracers: export txGas * eth, eth/tracers: pass intrinsic gas to js tracers eth/tracers: include tx gas in tracers usedGas eth/tracers: fix prestate tracer's sender balance eth/tracers: rm unnecessary import eth/tracers: pass intrinsicGas separately to tracer eth/tracers: fix tests broken by lack of txdata eth, eth/tracers: minor fix * eth/tracers: regenerate assets + unexport test-struct + add testcase * eth/tracers: simplify tests + make table-driven Co-authored-by: Guillaume Ballet Co-authored-by: Martin Holst Swende --- eth/api_tracer.go | 2 +- eth/tracers/internal/tracers/assets.go | 6 +- .../internal/tracers/prestate_tracer.js | 2 +- eth/tracers/tracer.go | 21 ++- eth/tracers/tracer_test.go | 151 ++++++++---------- eth/tracers/tracers_test.go | 4 +- 6 files changed, 92 insertions(+), 94 deletions(-) diff --git a/eth/api_tracer.go b/eth/api_tracer.go index 2497c8d95e..c68b762255 100644 --- a/eth/api_tracer.go +++ b/eth/api_tracer.go @@ -794,7 +794,7 @@ func (api *PrivateDebugAPI) traceTx(ctx context.Context, message core.Message, v } } // Constuct the JavaScript tracer to execute with - if tracer, err = tracers.New(*config.Tracer); err != nil { + if tracer, err = tracers.New(*config.Tracer, txContext); err != nil { return nil, err } // Handle timeouts and RPC cancellations diff --git a/eth/tracers/internal/tracers/assets.go b/eth/tracers/internal/tracers/assets.go index 432398ebb5..8b89ad4182 100644 --- a/eth/tracers/internal/tracers/assets.go +++ b/eth/tracers/internal/tracers/assets.go @@ -6,7 +6,7 @@ // evmdis_tracer.js (4.195kB) // noop_tracer.js (1.271kB) // opcount_tracer.js (1.372kB) -// prestate_tracer.js (4.234kB) +// prestate_tracer.js (4.287kB) // trigram_tracer.js (1.788kB) // unigram_tracer.js (1.51kB) @@ -197,7 +197,7 @@ func opcount_tracerJs() (*asset, error) { return a, nil } -var _prestate_tracerJs = 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+var _prestate_tracerJs = 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func prestate_tracerJsBytes() ([]byte, error) { return bindataRead( @@ -213,7 +213,7 @@ func prestate_tracerJs() (*asset, error) { } info := bindataFileInfo{name: "prestate_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} - a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xe9, 0x79, 0x70, 0x4f, 0xc5, 0x78, 0x57, 0x63, 0x6f, 0x5, 0x31, 0xce, 0x3e, 0x5d, 0xbd, 0x71, 0x4, 0x46, 0x78, 0xcd, 0x1d, 0xcd, 0xb9, 0xd8, 0x10, 0xff, 0xe6, 0xc5, 0x59, 0xb9, 0x25, 0x6e}} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xd4, 0x9, 0xf9, 0x44, 0x13, 0x31, 0x89, 0xf7, 0x35, 0x9a, 0xc6, 0xf0, 0x86, 0x9d, 0xb2, 0xe3, 0x57, 0xe2, 0xc0, 0xde, 0xc9, 0x3a, 0x4c, 0x4a, 0x94, 0x90, 0xa5, 0x92, 0x2f, 0xbf, 0xc0, 0xb8}} return a, nil } diff --git a/eth/tracers/internal/tracers/prestate_tracer.js b/eth/tracers/internal/tracers/prestate_tracer.js index e0a22bf157..084c04ec46 100644 --- a/eth/tracers/internal/tracers/prestate_tracer.js +++ b/eth/tracers/internal/tracers/prestate_tracer.js @@ -55,7 +55,7 @@ var toBal = bigInt(this.prestate[toHex(ctx.to)].balance.slice(2), 16); this.prestate[toHex(ctx.to)].balance = '0x'+toBal.subtract(ctx.value).toString(16); - this.prestate[toHex(ctx.from)].balance = '0x'+fromBal.add(ctx.value).toString(16); + this.prestate[toHex(ctx.from)].balance = '0x'+fromBal.add(ctx.value).add((ctx.gasUsed + ctx.intrinsicGas) * ctx.gasPrice).toString(16); // Decrement the caller's nonce, and remove empty create targets this.prestate[toHex(ctx.from)].nonce--; diff --git a/eth/tracers/tracer.go b/eth/tracers/tracer.go index 5d806d9026..c9f00d7371 100644 --- a/eth/tracers/tracer.go +++ b/eth/tracers/tracer.go @@ -27,10 +27,11 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/log" - "gopkg.in/olebedev/go-duktape.v3" + duktape "gopkg.in/olebedev/go-duktape.v3" ) // bigIntegerJS is the minified version of https://github.com/peterolson/BigInteger.js. @@ -316,7 +317,7 @@ type Tracer struct { // New instantiates a new tracer instance. code specifies a Javascript snippet, // which must evaluate to an expression returning an object with 'step', 'fault' // and 'result' functions. -func New(code string) (*Tracer, error) { +func New(code string, txCtx vm.TxContext) (*Tracer, error) { // Resolve any tracers by name and assemble the tracer object if tracer, ok := tracer(code); ok { code = tracer @@ -335,6 +336,8 @@ func New(code string) (*Tracer, error) { depthValue: new(uint), refundValue: new(uint), } + tracer.ctx["gasPrice"] = txCtx.GasPrice + // Set up builtins for this environment tracer.vm.PushGlobalGoFunction("toHex", func(ctx *duktape.Context) int { ctx.PushString(hexutil.Encode(popSlice(ctx))) @@ -546,6 +549,18 @@ func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost // Initialize the context if it wasn't done yet if !jst.inited { jst.ctx["block"] = env.Context.BlockNumber.Uint64() + // Compute intrinsic gas + isHomestead := env.ChainConfig().IsHomestead(env.Context.BlockNumber) + isIstanbul := env.ChainConfig().IsIstanbul(env.Context.BlockNumber) + var input []byte + if data, ok := jst.ctx["input"].([]byte); ok { + input = data + } + intrinsicGas, err := core.IntrinsicGas(input, jst.ctx["type"] == "CREATE", isHomestead, isIstanbul) + if err != nil { + return err + } + jst.ctx["intrinsicGas"] = intrinsicGas jst.inited = true } // If tracing was interrupted, set the error and stop @@ -597,8 +612,8 @@ func (jst *Tracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost // CaptureEnd is called after the call finishes to finalize the tracing. func (jst *Tracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error { jst.ctx["output"] = output - jst.ctx["gasUsed"] = gasUsed jst.ctx["time"] = t.String() + jst.ctx["gasUsed"] = gasUsed if err != nil { jst.ctx["error"] = err.Error() diff --git a/eth/tracers/tracer_test.go b/eth/tracers/tracer_test.go index 554b2282f1..f28e14864b 100644 --- a/eth/tracers/tracer_test.go +++ b/eth/tracers/tracer_test.go @@ -17,7 +17,6 @@ package tracers import ( - "bytes" "encoding/json" "errors" "math/big" @@ -50,94 +49,77 @@ type dummyStatedb struct { func (*dummyStatedb) GetRefund() uint64 { return 1337 } -func runTrace(tracer *Tracer) (json.RawMessage, error) { - env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) - - contract := vm.NewContract(account{}, account{}, big.NewInt(0), 10000) - contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x1, 0x0} - - _, err := env.Interpreter().Run(contract, []byte{}, false) - if err != nil { - return nil, err - } - return tracer.GetResult() +type vmContext struct { + blockCtx vm.BlockContext + txCtx vm.TxContext } -// TestRegressionPanicSlice tests that we don't panic on bad arguments to memory access -func TestRegressionPanicSlice(t *testing.T) { - tracer, err := New("{depths: [], step: function(log) { this.depths.push(log.memory.slice(-1,-2)); }, fault: function() {}, result: function() { return this.depths; }}") - if err != nil { - t.Fatal(err) - } - if _, err = runTrace(tracer); err != nil { - t.Fatal(err) - } -} - -// TestRegressionPanicSlice tests that we don't panic on bad arguments to stack peeks -func TestRegressionPanicPeek(t *testing.T) { - tracer, err := New("{depths: [], step: function(log) { this.depths.push(log.stack.peek(-1)); }, fault: function() {}, result: function() { return this.depths; }}") - if err != nil { - t.Fatal(err) - } - if _, err = runTrace(tracer); err != nil { - t.Fatal(err) - } -} - -// TestRegressionPanicSlice tests that we don't panic on bad arguments to memory getUint -func TestRegressionPanicGetUint(t *testing.T) { - tracer, err := New("{ depths: [], step: function(log, db) { this.depths.push(log.memory.getUint(-64));}, fault: function() {}, result: function() { return this.depths; }}") - if err != nil { - t.Fatal(err) - } - if _, err = runTrace(tracer); err != nil { - t.Fatal(err) - } +func testCtx() *vmContext { + return &vmContext{blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}} } -func TestTracing(t *testing.T) { - tracer, err := New("{count: 0, step: function() { this.count += 1; }, fault: function() {}, result: function() { return this.count; }}") - if err != nil { - t.Fatal(err) - } - - ret, err := runTrace(tracer) - if err != nil { - t.Fatal(err) - } - if !bytes.Equal(ret, []byte("3")) { - t.Errorf("Expected return value to be 3, got %s", string(ret)) - } -} - -func TestStack(t *testing.T) { - tracer, err := New("{depths: [], step: function(log) { this.depths.push(log.stack.length()); }, fault: function() {}, result: function() { return this.depths; }}") - if err != nil { - t.Fatal(err) - } +func runTrace(tracer *Tracer, vmctx *vmContext) (json.RawMessage, error) { + env := vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) + var ( + startGas uint64 = 10000 + value = big.NewInt(0) + ) + contract := vm.NewContract(account{}, account{}, value, startGas) + contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x1, 0x0} - ret, err := runTrace(tracer) + tracer.CaptureStart(contract.Caller(), contract.Address(), false, []byte{}, startGas, value) + ret, err := env.Interpreter().Run(contract, []byte{}, false) + tracer.CaptureEnd(ret, startGas-contract.Gas, 1, err) if err != nil { - t.Fatal(err) - } - if !bytes.Equal(ret, []byte("[0,1,2]")) { - t.Errorf("Expected return value to be [0,1,2], got %s", string(ret)) + return nil, err } + return tracer.GetResult() } -func TestOpcodes(t *testing.T) { - tracer, err := New("{opcodes: [], step: function(log) { this.opcodes.push(log.op.toString()); }, fault: function() {}, result: function() { return this.opcodes; }}") - if err != nil { - t.Fatal(err) - } - - ret, err := runTrace(tracer) - if err != nil { - t.Fatal(err) - } - if !bytes.Equal(ret, []byte("[\"PUSH1\",\"PUSH1\",\"STOP\"]")) { - t.Errorf("Expected return value to be [\"PUSH1\",\"PUSH1\",\"STOP\"], got %s", string(ret)) +func TestTracer(t *testing.T) { + execTracer := func(code string) []byte { + t.Helper() + ctx := &vmContext{blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}} + tracer, err := New(code, ctx.txCtx) + if err != nil { + t.Fatal(err) + } + ret, err := runTrace(tracer, ctx) + if err != nil { + t.Fatal(err) + } + return ret + } + for i, tt := range []struct { + code string + want string + }{ + { // tests that we don't panic on bad arguments to memory access + code: "{depths: [], step: function(log) { this.depths.push(log.memory.slice(-1,-2)); }, fault: function() {}, result: function() { return this.depths; }}", + want: `[{},{},{}]`, + }, { // tests that we don't panic on bad arguments to stack peeks + code: "{depths: [], step: function(log) { this.depths.push(log.stack.peek(-1)); }, fault: function() {}, result: function() { return this.depths; }}", + want: `["0","0","0"]`, + }, { // tests that we don't panic on bad arguments to memory getUint + code: "{ depths: [], step: function(log, db) { this.depths.push(log.memory.getUint(-64));}, fault: function() {}, result: function() { return this.depths; }}", + want: `["0","0","0"]`, + }, { // tests some general counting + code: "{count: 0, step: function() { this.count += 1; }, fault: function() {}, result: function() { return this.count; }}", + want: `3`, + }, { // tests that depth is reported correctly + code: "{depths: [], step: function(log) { this.depths.push(log.stack.length()); }, fault: function() {}, result: function() { return this.depths; }}", + want: `[0,1,2]`, + }, { // tests to-string of opcodes + code: "{opcodes: [], step: function(log) { this.opcodes.push(log.op.toString()); }, fault: function() {}, result: function() { return this.opcodes; }}", + want: `["PUSH1","PUSH1","STOP"]`, + }, { // tests intrinsic gas + code: "{depths: [], step: function() {}, fault: function() {}, result: function(ctx) { return ctx.gasPrice+'.'+ctx.gasUsed+'.'+ctx.intrinsicGas; }}", + want: `"100000.6.21000"`, + }, + } { + if have := execTracer(tt.code); tt.want != string(have) { + t.Errorf("testcase %d: expected return value to be %s got %s\n\tcode: %v", i, tt.want, string(have), tt.code) + } } } @@ -145,7 +127,8 @@ func TestHalt(t *testing.T) { t.Skip("duktape doesn't support abortion") timeout := errors.New("stahp") - tracer, err := New("{step: function() { while(1); }, result: function() { return null; }}") + vmctx := testCtx() + tracer, err := New("{step: function() { while(1); }, result: function() { return null; }}", vmctx.txCtx) if err != nil { t.Fatal(err) } @@ -155,17 +138,17 @@ func TestHalt(t *testing.T) { tracer.Stop(timeout) }() - if _, err = runTrace(tracer); err.Error() != "stahp in server-side tracer function 'step'" { + if _, err = runTrace(tracer, vmctx); err.Error() != "stahp in server-side tracer function 'step'" { t.Errorf("Expected timeout error, got %v", err) } } func TestHaltBetweenSteps(t *testing.T) { - tracer, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }}") + vmctx := testCtx() + tracer, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }}", vmctx.txCtx) if err != nil { t.Fatal(err) } - env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) contract := vm.NewContract(&account{}, &account{}, big.NewInt(0), 0) diff --git a/eth/tracers/tracers_test.go b/eth/tracers/tracers_test.go index b749d832b4..9dc4c69631 100644 --- a/eth/tracers/tracers_test.go +++ b/eth/tracers/tracers_test.go @@ -173,7 +173,7 @@ func TestPrestateTracerCreate2(t *testing.T) { _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false) // Create the tracer, the EVM environment and run it - tracer, err := New("prestateTracer") + tracer, err := New("prestateTracer", txContext) if err != nil { t.Fatalf("failed to create call tracer: %v", err) } @@ -248,7 +248,7 @@ func TestCallTracer(t *testing.T) { _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false) // Create the tracer, the EVM environment and run it - tracer, err := New("callTracer") + tracer, err := New("callTracer", txContext) if err != nil { t.Fatalf("failed to create call tracer: %v", err) }