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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 "event_queue.h"
17 #include "event_queue_base.h"
18 #include "eventqueueinsert_fuzzer.h"
19 #include "securec.h"
20 
21 namespace OHOS {
22 namespace {
23     constexpr size_t U32_AT_SIZE = 4;
24 }
25 
DoSomethingInterestingWithMyAPI(const char * data,size_t size)26 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
27 {
28     std::shared_ptr<AppExecFwk::IoWaiter> ioWaiter = nullptr;
29     AppExecFwk::EventQueueBase eventQueue(ioWaiter);
30     uint32_t innerEventId = *data;
31     std::shared_ptr<AppExecFwk::EventHandler> myHandler;
32     eventQueue.HasInnerEvent(myHandler, innerEventId);
33     std::list<AppExecFwk::InnerEvent::Pointer> events;
34     AppExecFwk::InnerEvent::Pointer event = std::move(events.front());
35     AppExecFwk::EventQueue::Priority priority = AppExecFwk::EventQueue::Priority::LOW;
36     eventQueue.Insert(event, priority);
37     return true;
38 }
39 }
40 
41 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)42 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
43 {
44     /* Run your code on data */
45     if (data == nullptr) {
46         return 0;
47     }
48 
49     if (size < OHOS::U32_AT_SIZE) {
50         return 0;
51     }
52 
53     char* ch = (char *)malloc(size + 1);
54     if (ch == nullptr) {
55         return 0;
56     }
57 
58     (void)memset_s(ch, size + 1, 0x00, size + 1);
59     if (memcpy_s(ch, size, data, size) != EOK) {
60         free(ch);
61         ch = nullptr;
62         return 0;
63     }
64 
65     OHOS::DoSomethingInterestingWithMyAPI(ch, size);
66     free(ch);
67     ch = nullptr;
68     return 0;
69 }
70