1 /*
2 * Copyright (c) 2024 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 "appstateobservermanager_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "app_state_observer_manager.h"
23 #include "appspawn.h"
24 #undef private
25 #include "parcel.h"
26 #include "securec.h"
27
28 using namespace OHOS::AAFwk;
29 using namespace OHOS::AppExecFwk;
30
31 namespace OHOS {
32 namespace {
33 constexpr size_t U32_AT_SIZE = 4;
34 constexpr uint8_t ENABLE = 2;
35 constexpr size_t OFFSET_ZERO = 24;
36 constexpr size_t OFFSET_ONE = 16;
37 constexpr size_t OFFSET_TWO = 8;
38 }
GetU32Data(const char * ptr)39 uint32_t GetU32Data(const char* ptr)
40 {
41 // convert fuzz input data to an integer
42 return (ptr[0] << OFFSET_ZERO) | (ptr[1] << OFFSET_ONE) | (ptr[2] << OFFSET_TWO) | ptr[3];
43 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)44 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
45 {
46 std::shared_ptr<AppStateObserverManager> appStateObserverManager = std::make_shared<AppStateObserverManager>();
47 if (appStateObserverManager == nullptr) {
48 return false;
49 }
50 sptr<IApplicationStateObserver> observer;
51 std::vector<std::string> bundleNameList;
52 appStateObserverManager->RegisterApplicationStateObserver(observer, bundleNameList);
53 appStateObserverManager->UnregisterApplicationStateObserver(observer);
54 std::shared_ptr<AppRunningRecord> appRecord;
55 appStateObserverManager->HandleOnAppProcessCreated(appRecord, false);
56 ApplicationState state = ApplicationState::APP_STATE_CREATE;
57 bool needNotifyApp = *data % ENABLE;
58 bool isFromWindowFocusChanged = *data % ENABLE;
59 appStateObserverManager->HandleAppStateChanged(appRecord, state, needNotifyApp, isFromWindowFocusChanged);
60 appStateObserverManager->HandleOnAppProcessDied(appRecord);
61 std::shared_ptr<RenderRecord> renderRecord;
62 appStateObserverManager->HandleOnRenderProcessCreated(renderRecord, false);
63 appStateObserverManager->HandleOnRenderProcessDied(renderRecord);
64 ProcessData processData;
65 appStateObserverManager->HandleOnProcessCreated(processData);
66 appStateObserverManager->HandleOnProcessStateChanged(appRecord);
67 appStateObserverManager->HandleOnProcessDied(processData);
68 AbilityStateData abilityStateData;
69 bool isAbility = *data % ENABLE;
70 appStateObserverManager->HandleStateChangedNotifyObserver(abilityStateData, isAbility, isFromWindowFocusChanged);
71 return true;
72 }
73 }
74
75 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77 {
78 /* Run your code on data */
79 if (data == nullptr) {
80 std::cout << "invalid data" << std::endl;
81 return 0;
82 }
83
84 /* Validate the length of size */
85 if (size < OHOS::U32_AT_SIZE) {
86 return 0;
87 }
88
89 char* ch = static_cast<char*>(malloc(size + 1));
90 if (ch == nullptr) {
91 std::cout << "malloc failed." << std::endl;
92 return 0;
93 }
94
95 (void)memset_s(ch, size + 1, 0x00, size + 1);
96 if (memcpy_s(ch, size, data, size) != EOK) {
97 std::cout << "copy failed." << std::endl;
98 free(ch);
99 ch = nullptr;
100 return 0;
101 }
102
103 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
104 free(ch);
105 ch = nullptr;
106 return 0;
107 }
108
109