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 "unsubscribecommonevent_fuzzer.h"
17 #include "common_event_manager.h"
18 #include "fuzz_common_base.h"
19 
20 namespace OHOS {
21 namespace EventFwk {
22 class TestSubscriber : public CommonEventSubscriber {
23 public:
TestSubscriber(const CommonEventSubscribeInfo & sp)24     explicit TestSubscriber(const CommonEventSubscribeInfo &sp) : CommonEventSubscriber(sp)
25     {}
26 
~TestSubscriber()27     ~TestSubscriber()
28     {}
29 
OnReceiveEvent(const CommonEventData & data)30     void OnReceiveEvent(const CommonEventData &data) override
31     {}
32 };
33 }  // namespace EventFwk
34 
35 constexpr size_t U32_AT_SIZE = 4;
DoSomethingInterestingWithMyAPI(FuzzData fuzzData)36 bool DoSomethingInterestingWithMyAPI(FuzzData fuzzData)
37 {
38     std::string stringData = fuzzData.GenerateRandomString();
39 
40     EventFwk::MatchingSkills matchingSkills;
41     matchingSkills.AddEvent(stringData);
42     matchingSkills.AddEntity(stringData);
43     matchingSkills.AddScheme(stringData);
44 
45     EventFwk::CommonEventSubscribeInfo subscribeInfo(matchingSkills);
46     int32_t priority = fuzzData.GenerateRandomInt32();
47     subscribeInfo.SetPriority(priority);
48     subscribeInfo.SetPermission(stringData);
49     subscribeInfo.SetDeviceId(stringData);
50 
51     std::shared_ptr<EventFwk::TestSubscriber> subscriber =
52         std::make_shared<EventFwk::TestSubscriber>(subscribeInfo);
53     return EventFwk::CommonEventManager::UnSubscribeCommonEvent(subscriber);
54 }
55 }  // namespace OHOS
56 
57 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)58 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
59 {
60     /* Run your code on data */
61     if (data == nullptr) {
62         return 0;
63     }
64 
65     if (size < OHOS::U32_AT_SIZE) {
66         return 0;
67     }
68     OHOS::FuzzData fuzzData(data, size);
69     OHOS::DoSomethingInterestingWithMyAPI(fuzzData);
70     return 0;
71 }
72