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 "bgtasksystemeventobserver_fuzzer.h"
17 #include "securec.h"
18
19 #include "background_task_mgr_service.h"
20 #include "common_event_data.h"
21 #include "event_info.h"
22 #include "event_handler.h"
23 #include "event_runner.h"
24 #include "system_event_observer.h"
25
26
27 namespace OHOS {
28 namespace BackgroundTaskMgr {
29 constexpr int32_t U32_AT_SIZE = 4;
30 constexpr uint8_t TWENTYFOUR = 24;
31 constexpr uint8_t SIXTEEN = 16;
32 constexpr uint8_t EIGHT = 8;
33 constexpr int32_t THREE = 3;
34 constexpr int32_t TWO = 2;
35
GetU32Data(const char * ptr)36 uint32_t GetU32Data(const char* ptr)
37 {
38 return (ptr[0] << TWENTYFOUR) | (ptr[1] << SIXTEEN) | (ptr[TWO] << EIGHT) | (ptr[THREE]);
39 }
40
DoSomethingInterestingWithMyAPI(const char * data,size_t size)41 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
42 {
43 GetU32Data(data);
44 EventFwk::MatchingSkills matchingSkills;
45 matchingSkills.AddEvent(EventFwk::CommonEventSupport::COMMON_EVENT_PACKAGE_ADDED);
46 EventFwk::CommonEventSubscribeInfo commonEventSubscribeInfo(matchingSkills);
47 auto systemEventListener = std::make_shared<SystemEventObserver>(commonEventSubscribeInfo);
48 systemEventListener->Subscribe();
49 systemEventListener->Unsubscribe();
50
51 EventFwk::CommonEventData eventData = EventFwk::CommonEventData();
52 systemEventListener->OnReceiveEvent(eventData);
53
54 auto handler = std::make_shared<OHOS::AppExecFwk::EventHandler>(nullptr);
55 systemEventListener->SetEventHandler(handler);
56 systemEventListener->OnReceiveEventContinuousTask(eventData);
57 auto bgContinuousTaskMgr = std::make_shared<BgContinuousTaskMgr>();
58 systemEventListener->SetBgContinuousTaskMgr(bgContinuousTaskMgr);
59 systemEventListener->OnReceiveEventContinuousTask(eventData);
60 AAFwk::Want want = AAFwk::Want();
61 want.SetAction(EventFwk::CommonEventSupport::COMMON_EVENT_USER_SWITCHED);
62 eventData.SetWant(want);
63 systemEventListener->OnReceiveEventContinuousTask(eventData);
64 want.SetAction(EventFwk::CommonEventSupport::COMMON_EVENT_USER_ADDED);
65 eventData.SetWant(want);
66 systemEventListener->OnReceiveEventContinuousTask(eventData);
67 want.SetAction(EventFwk::CommonEventSupport::COMMON_EVENT_USER_REMOVED);
68 eventData.SetWant(want);
69 systemEventListener->OnReceiveEventContinuousTask(eventData);
70
71 EventFwk::CommonEventData eventData2 = EventFwk::CommonEventData();
72 AAFwk::Want want2 = AAFwk::Want();
73 want2.SetAction(EventFwk::CommonEventSupport::COMMON_EVENT_PACKAGE_REMOVED);
74 eventData2.SetWant(want2);
75 systemEventListener->OnReceiveEventEfficiencyRes(eventData2);
76 return true;
77 }
78 } // BackgroundTaskMgr
79 } // OHOS
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
83 {
84 /* Run your code on data */
85 if (data == nullptr) {
86 return 0;
87 }
88
89 if (size < OHOS::BackgroundTaskMgr::U32_AT_SIZE) {
90 return 0;
91 }
92
93 char* ch = static_cast<char *>(malloc(size + 1));
94 if (ch == nullptr) {
95 return 0;
96 }
97
98 (void)memset_s(ch, size + 1, 0x00, size + 1);
99 if (memcpy_s(ch, size + 1, data, size) != EOK) {
100 free(ch);
101 ch = nullptr;
102 return 0;
103 }
104
105 OHOS::BackgroundTaskMgr::DoSomethingInterestingWithMyAPI(ch, size);
106 free(ch);
107 ch = nullptr;
108 return 0;
109 }
110