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 "formproviderdata_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_provider_data.h"
24 #undef private
25 #undef protected
26 #include "securec.h"
27
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 constexpr size_t FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)33 uint32_t GetU32Data(const char* ptr)
34 {
35 // convert fuzz input data to an integer
36 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
37 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)38 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
39 {
40 FormProviderData formProviderData;
41 nlohmann::json jsonData;
42 formProviderData.UpdateData(jsonData);
43 formProviderData.GetData();
44 std::string picName(data, size);
45 const std::shared_ptr<char> datas = nullptr;
46 int32_t sizes = static_cast<int32_t>(GetU32Data(data));
47 formProviderData.AddImageData(picName, datas, sizes);
48 int fd = static_cast<int>(GetU32Data(data));
49 formProviderData.AddImageData(picName, fd);
50 formProviderData.ParseImagesData();
51 formProviderData.RemoveImageData(picName);
52 std::string jsonDataString(data, size);
53 formProviderData.SetDataString(jsonDataString);
54 nlohmann::json addJsonData;
55 formProviderData.MergeData(addJsonData);
56 formProviderData.GetImageDataMap();
57 int32_t imageDataState = static_cast<int32_t>(GetU32Data(data));
58 formProviderData.SetImageDataState(imageDataState);
59 Parcel parcel;
60 formProviderData.ReadFromParcel(parcel);
61 formProviderData.Marshalling(parcel);
62 formProviderData.Unmarshalling(parcel);
63 formProviderData.ClearData();
64 formProviderData.NeedCache();
65 formProviderData.WriteImageDataToParcel(parcel, picName, datas, sizes);
66 formProviderData.ConvertRawImageData();
67 return formProviderData.GetDataString() == "aa";
68 }
69 }
70
71 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)72 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
73 {
74 /* Run your code on data */
75 if (data == nullptr) {
76 return 0;
77 }
78
79 if (size < OHOS::U32_AT_SIZE) {
80 return 0;
81 }
82
83 /* Validate the length of size */
84 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
85 return 0;
86 }
87
88 char* ch = static_cast<char*>(malloc(size + 1));
89 if (ch == nullptr) {
90 return 0;
91 }
92
93 (void)memset_s(ch, size + 1, 0x00, size + 1);
94 if (memcpy_s(ch, size + 1, data, size) != EOK) {
95 free(ch);
96 ch = nullptr;
97 return 0;
98 }
99
100 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
101 free(ch);
102 ch = nullptr;
103 return 0;
104 }
105
106