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 "appstateobservermanager_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "app_state_observer_manager.h"
23 #undef private
24 #include "parcel.h"
25 #include "securec.h"
26
27 using namespace OHOS::AAFwk;
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 namespace {
32 constexpr size_t FOO_MAX_LEN = 1024;
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 sptr<IApplicationStateObserver> observer;
48 std::vector<std::string> bundleNameList;
49 appStateObserverManager->RegisterApplicationStateObserver(observer, bundleNameList);
50 appStateObserverManager->UnregisterApplicationStateObserver(observer);
51 appStateObserverManager->AddObserverDeathRecipient(observer);
52 appStateObserverManager->RemoveObserverDeathRecipient(observer);
53 std::shared_ptr<AppRunningRecord> appRecord;
54
55 appStateObserverManager->HandleOnAppProcessCreated(appRecord);
56 ApplicationState state = ApplicationState::APP_STATE_CREATE;
57 bool needNotifyApp = *data % ENABLE;
58 appStateObserverManager->HandleAppStateChanged(appRecord, state, needNotifyApp);
59 appStateObserverManager->HandleOnAppProcessDied(appRecord);
60
61 std::shared_ptr<RenderRecord> renderRecord;
62 appStateObserverManager->HandleOnRenderProcessCreated(renderRecord);
63 appStateObserverManager->HandleOnRenderProcessDied(renderRecord);
64
65 ProcessData processData;
66 appStateObserverManager->HandleOnProcessCreated(processData);
67 appStateObserverManager->HandleOnProcessStateChanged(appRecord);
68 appStateObserverManager->HandleOnProcessDied(processData);
69 AbilityStateData abilityStateData;
70 bool isAbility = *data % ENABLE;
71
72 appStateObserverManager->HandleStateChangedNotifyObserver(abilityStateData, isAbility);
73
74 return true;
75 }
76 }
77
78 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)79 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
80 {
81 /* Run your code on data */
82 if (data == nullptr) {
83 std::cout << "invalid data" << std::endl;
84 return 0;
85 }
86
87 /* Validate the length of size */
88 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
89 return 0;
90 }
91
92 char* ch = (char *)malloc(size + 1);
93 if (ch == nullptr) {
94 std::cout << "malloc failed." << std::endl;
95 return 0;
96 }
97
98 (void)memset_s(ch, size + 1, 0x00, size + 1);
99 if (memcpy_s(ch, size, data, size) != EOK) {
100 std::cout << "copy failed." << std::endl;
101 free(ch);
102 ch = nullptr;
103 return 0;
104 }
105
106 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
107 free(ch);
108 ch = nullptr;
109 return 0;
110 }
111
112