1 /*
2 * Copyright (c) 2023 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 "appendextradata_fuzzer.h"
17
18 #include "securec.h"
19
20 #include "input_manager.h"
21 #include "mmi_log.h"
22
23 namespace OHOS {
24 namespace MMI {
GetObject(T & object,const uint8_t * data,size_t size)25 template <class T> size_t GetObject(T &object, const uint8_t *data, size_t size)
26 {
27 size_t objectSize = sizeof(object);
28 if (objectSize > size) {
29 return 0;
30 }
31 errno_t ret = memcpy_s(&object, objectSize, data, objectSize);
32 if (ret != EOK) {
33 return 0;
34 }
35 return objectSize;
36 }
37
AppendExtraDataFuzzTest(const uint8_t * data,size_t size)38 void AppendExtraDataFuzzTest(const uint8_t *data, size_t size)
39 {
40 ExtraData extraData;
41 size_t startPos = 0;
42 int32_t random;
43 GetObject<int32_t>(random, data + startPos, size - startPos);
44 bool appended = (random % 2) ? false : true;
45 extraData.appended = appended;
46 int32_t sourceType;
47 GetObject<int32_t>(sourceType, data + startPos, size - startPos);
48 extraData.sourceType = sourceType;
49 int32_t pointerId;
50 GetObject<int32_t>(pointerId, data + startPos, size - startPos);
51 extraData.pointerId = pointerId;
52 std::vector<uint8_t> dataBuffer(512, 1);
53 extraData.buffer = dataBuffer;
54 InputManager::GetInstance()->AppendExtraData(extraData);
55 }
56 } // namespace MMI
57 } // namespace OHOS
58
59 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
61 {
62 /* Run your code on data */
63 OHOS::MMI::AppendExtraDataFuzzTest(data, size);
64 return 0;
65 }