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 #define private public
17 #define protected public
18 #include "epoll_io_waiter.h"
19 #undef private
20 #undef protected
21
22 #include "epolliowaiter_fuzzer.h"
23 #include "securec.h"
24
25 namespace OHOS {
26 namespace {
27 constexpr size_t U32_AT_SIZE = 4;
28 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)29 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
30 {
31 int32_t fileDescriptor = U32_AT(reinterpret_cast<const uint8_t*>(data));
32 OHOS::AppExecFwk::EpollIoWaiter epollIoWaiter;
33 epollIoWaiter.SupportListeningFileDescriptor();
34 epollIoWaiter.RemoveFileDescriptor(fileDescriptor);
35 return true;
36 }
37 }
38
39 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)40 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
41 {
42 /* Run your code on data */
43 if (data == nullptr) {
44 return 0;
45 }
46
47 if (size < OHOS::U32_AT_SIZE) {
48 return 0;
49 }
50
51 char* ch = reinterpret_cast<char *>(malloc(size + 1));
52 if (ch == nullptr) {
53 return 0;
54 }
55
56 (void)memset_s(ch, size + 1, 0x00, size + 1);
57 if (memcpy_s(ch, size, data, size) != EOK) {
58 free(ch);
59 ch = nullptr;
60 return 0;
61 }
62
63 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
64 free(ch);
65 ch = nullptr;
66 return 0;
67 }
68