1 /*
2 * Copyright (c) 2024 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 "accessibleabilitymanagercaptionobserverstub_fuzzer.h"
17 #include "accessible_ability_manager_caption_observer_stub.h"
18 #include "securec.h"
19
20 namespace OHOS {
21 namespace Accessibility {
22 namespace {
23 constexpr size_t DATA_MIN_SIZE = 200;
24 constexpr char END_CHAR = '\0';
25 constexpr size_t LEN = 10;
26 }
27
28 class CaptionObserverImplFuzzTest : public AccessibleAbilityManagerCaptionObserverStub {
29 public:
30 CaptionObserverImplFuzzTest() = default;
31 ~CaptionObserverImplFuzzTest() = default;
OnPropertyChanged(const AccessibilityConfig::CaptionProperty & property)32 void OnPropertyChanged(const AccessibilityConfig::CaptionProperty &property) override {};
33 };
34
35 template<class T>
GetObject(T & object,const uint8_t * data,size_t size)36 size_t GetObject(T &object, const uint8_t *data, size_t size)
37 {
38 size_t objectSize = sizeof(object);
39 if (objectSize > size) {
40 return 0;
41 }
42 return memcpy_s(&object, objectSize, data, objectSize) == EOK ? objectSize : 0;
43 }
44
OnRemoteRequestFuzzTest(const uint8_t * data,size_t size)45 bool OnRemoteRequestFuzzTest(const uint8_t* data, size_t size)
46 {
47 if (data == nullptr || size < DATA_MIN_SIZE) {
48 return false;
49 }
50
51 size_t position = 0;
52 uint32_t captionCode = 0;
53 MessageParcel captionData;
54 MessageParcel captionReply;
55 MessageOption option(MessageOption::TF_SYNC);
56
57 GetObject<uint32_t>(captionCode, &data[position], size - position);
58 CaptionObserverImplFuzzTest callBackImp;
59 captionData.WriteInterfaceToken(CaptionObserverImplFuzzTest::GetDescriptor());
60 callBackImp.OnRemoteRequest(captionCode, captionData, captionReply, option);
61 return true;
62 }
63 } // namespace Accessibility
64 } // namespace OHOS
65
66 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)67 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
68 {
69 /* Run your code on data */
70 OHOS::Accessibility::OnRemoteRequestFuzzTest(data, size);
71 return 0;
72 }