1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "backendsinglestep_fuzzer.h"
17 #include "ecmascript/napi/include/jsnapi.h"
18 #include "agent/debugger_impl.h"
19 #include "tooling/backend/js_pt_hooks.h"
20
21 using namespace panda;
22 using namespace panda::ecmascript;
23 using namespace panda::ecmascript::tooling;
24
25 #define MAXBYTELEN sizeof(int32_t)
26
27 namespace OHOS {
BackendSingleStepFuzzTest(const uint8_t* data, size_t size)28 void BackendSingleStepFuzzTest(const uint8_t* data, size_t size)
29 {
30 int32_t input = 0;
31 RuntimeOption option;
32 option.SetLogLevel(RuntimeOption::LOG_LEVEL::ERROR);
33 auto vm = JSNApi::CreateJSVM(option);
34 {
35 if (size <= 0) {
36 return;
37 }
38 if (size > MAXBYTELEN) {
39 size = MAXBYTELEN;
40 }
41 if (memcpy_s(&input, MAXBYTELEN, data, size) != 0) {
42 std::cout << "memcpy_s failed!";
43 UNREACHABLE();
44 }
45 const int32_t MaxMemory = 1073741824;
46 if (input > MaxMemory) {
47 input = MaxMemory;
48 }
49 using JSPtLocation = tooling::JSPtLocation;
50 EntityId methodId(input);
51 uint32_t bytecodeOffset = 0;
52 auto debugger = std::make_unique<DebuggerImpl>(vm, nullptr, nullptr);
53 std::unique_ptr<JSPtHooks> jspthooks = std::make_unique<JSPtHooks>(debugger.get());
54 JSPtLocation ptLocation1(nullptr, methodId, bytecodeOffset);
55 jspthooks->SingleStep(ptLocation1);
56 }
57 JSNApi::DestroyJSVM(vm);
58 }
59 }
60
61 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)62 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
63 {
64 // Run your code on data.
65 OHOS::BackendSingleStepFuzzTest(data, size);
66 return 0;
67 }