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 "securec.h"
18 #include "common_event_manager.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;
36
DoSomethingInterestingWithMyAPI(const char * data,size_t size)37 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
38 {
39 std::string stringData(data);
40
41 EventFwk::MatchingSkills matchingSkills;
42 matchingSkills.AddEvent(stringData);
43 matchingSkills.AddEntity(stringData);
44 matchingSkills.AddScheme(stringData);
45
46 EventFwk::CommonEventSubscribeInfo subscribeInfo(matchingSkills);
47 int32_t priority = U32_AT(reinterpret_cast<const uint8_t*>(data));
48 subscribeInfo.SetPriority(priority);
49 subscribeInfo.SetPermission(stringData);
50 subscribeInfo.SetDeviceId(stringData);
51
52 std::shared_ptr<EventFwk::TestSubscriber> subscriber =
53 std::make_shared<EventFwk::TestSubscriber>(subscribeInfo);
54 return EventFwk::CommonEventManager::UnSubscribeCommonEvent(subscriber);
55 }
56 } // namespace OHOS
57
58 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)59 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
60 {
61 /* Run your code on data */
62 if (data == nullptr) {
63 return 0;
64 }
65
66 if (size < OHOS::U32_AT_SIZE) {
67 return 0;
68 }
69
70 char* ch = (char *)malloc(size + 1);
71 if (ch == nullptr) {
72 return 0;
73 }
74
75 (void)memset_s(ch, size + 1, 0x00, size + 1);
76 if (memcpy_s(ch, size, data, size) != EOK) {
77 free(ch);
78 ch = nullptr;
79 return 0;
80 }
81
82 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
83 free(ch);
84 ch = nullptr;
85 return 0;
86 }
87