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 FOO_MAX_LEN = 1024;
34 constexpr size_t U32_AT_SIZE = 4;
35 constexpr uint8_t ENABLE = 2;
36 constexpr size_t OFFSET_ZERO = 24;
37 constexpr size_t OFFSET_ONE = 16;
38 constexpr size_t OFFSET_TWO = 8;
39 }
GetU32Data(const char * ptr)40 uint32_t GetU32Data(const char* ptr)
41 {
42 // convert fuzz input data to an integer
43 return (ptr[0] << OFFSET_ZERO) | (ptr[1] << OFFSET_ONE) | (ptr[2] << OFFSET_TWO) | ptr[3];
44 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)45 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
46 {
47 std::shared_ptr<AppStateObserverManager> appStateObserverManager = std::make_shared<AppStateObserverManager>();
48 if (appStateObserverManager == nullptr) {
49 return false;
50 }
51 sptr<IApplicationStateObserver> observer;
52 std::vector<std::string> bundleNameList;
53 appStateObserverManager->RegisterApplicationStateObserver(observer, bundleNameList);
54 appStateObserverManager->UnregisterApplicationStateObserver(observer);
55 std::shared_ptr<AppRunningRecord> appRecord;
56 appStateObserverManager->HandleOnAppProcessCreated(appRecord, false);
57 ApplicationState state = ApplicationState::APP_STATE_CREATE;
58 bool needNotifyApp = *data % ENABLE;
59 bool isFromWindowFocusChanged = *data % ENABLE;
60 appStateObserverManager->HandleAppStateChanged(appRecord, state, needNotifyApp, isFromWindowFocusChanged);
61 appStateObserverManager->HandleOnAppProcessDied(appRecord);
62 std::shared_ptr<RenderRecord> renderRecord;
63 appStateObserverManager->HandleOnRenderProcessCreated(renderRecord);
64 appStateObserverManager->HandleOnRenderProcessDied(renderRecord);
65 ProcessData processData;
66 appStateObserverManager->HandleOnProcessCreated(processData);
67 appStateObserverManager->HandleOnProcessStateChanged(appRecord);
68 appStateObserverManager->HandleOnProcessDied(processData);
69 AbilityStateData abilityStateData;
70 bool isAbility = *data % ENABLE;
71 appStateObserverManager->HandleStateChangedNotifyObserver(abilityStateData, isAbility, isFromWindowFocusChanged);
72 return true;
73 }
74 }
75
76 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)77 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
78 {
79 /* Run your code on data */
80 if (data == nullptr) {
81 std::cout << "invalid data" << std::endl;
82 return 0;
83 }
84
85 /* Validate the length of size */
86 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
87 return 0;
88 }
89
90 char* ch = static_cast<char*>(malloc(size + 1));
91 if (ch == nullptr) {
92 std::cout << "malloc failed." << std::endl;
93 return 0;
94 }
95
96 (void)memset_s(ch, size + 1, 0x00, size + 1);
97 if (memcpy_s(ch, size, data, size) != EOK) {
98 std::cout << "copy failed." << std::endl;
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103
104 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
105 free(ch);
106 ch = nullptr;
107 return 0;
108 }
109
110