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 "event_runner.h"
17 #include "eventrunner_fuzzer.h"
18 #include "securec.h"
19
20 namespace OHOS {
21 namespace {
22 constexpr size_t U32_AT_SIZE = 4;
23 static auto runner = AppExecFwk::EventRunner::Create(true);
24 [[maybe_unused]] static auto runner2 = AppExecFwk::EventRunner::Create("EventRunnerFuzzTest");
25 }
26
27 class DumperTest : public AppExecFwk::Dumper {
28 public:
29 DumperTest() = default;
~DumperTest()30 virtual ~DumperTest()
31 {};
Dump(const std::string & message)32 void Dump(const std::string &message) override
33 {}
GetTag()34 std::string GetTag() override
35 {
36 return {};
37 }
38 };
39
40 class LoggerTest : public AppExecFwk::Logger {
41 public:
42 LoggerTest() = default;
~LoggerTest()43 virtual ~LoggerTest()
44 {};
Log(const std::string & line)45 void Log(const std::string &line) override
46 {}
47 };
48
DoSomethingInterestingWithMyAPI(const char * data,size_t size)49 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
50 {
51 DumperTest dumper;
52 std::string stringData(data);
53 std::shared_ptr<LoggerTest> logger = std::make_shared<LoggerTest>();
54 runner->Dump(dumper);
55 runner->DumpRunnerInfo(stringData);
56 runner->SetLogger(logger);
57 runner->GetCurrentEventQueue();
58 runner->GetThreadId();
59 runner->IsCurrentRunnerThread();
60 runner->Current();
61 runner->Run();
62 runner->Stop();
63 runner->GetEventQueue();
64 runner->GetMainEventRunner();
65 return true;
66 }
67 }
68
69 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)70 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
71 {
72 /* Run your code on data */
73 if (data == nullptr) {
74 return 0;
75 }
76
77 if (size < OHOS::U32_AT_SIZE) {
78 return 0;
79 }
80
81 char* ch = (char *)malloc(size + 1);
82 if (ch == nullptr) {
83 return 0;
84 }
85
86 (void)memset_s(ch, size + 1, 0x00, size + 1);
87 if (memcpy_s(ch, size, data, size) != EOK) {
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92
93 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
94 free(ch);
95 ch = nullptr;
96 return 0;
97 }
98