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 "formproviderinfo_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "form_provider_info.h"
22 #include "securec.h"
23
24 using namespace OHOS::AppExecFwk;
25
26 namespace OHOS {
27 constexpr size_t FOO_MAX_LEN = 1024;
28 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)29 uint32_t GetU32Data(const char* ptr)
30 {
31 // convert fuzz input data to an integer
32 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
33 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)34 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
35 {
36 FormProviderInfo formProviderInfo;
37 std::string dataString(data);
38 formProviderInfo.SetFormDataString(dataString);
39 std::map<std::string, std::pair<sptr<FormAshmem>, int32_t>> imageDataMap;
40 formProviderInfo.SetImageDataMap(imageDataMap);
41 formProviderInfo.GetImageDataMap();
42 nlohmann::json addJsonData;
43 formProviderInfo.MergeData(addJsonData);
44 formProviderInfo.NeedCache();
45 Parcel parcel;
46 return formProviderInfo.Marshalling(parcel);
47 }
48 }
49
50 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)51 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
52 {
53 /* Run your code on data */
54 if (data == nullptr) {
55 return 0;
56 }
57
58 if (size < OHOS::U32_AT_SIZE) {
59 return 0;
60 }
61
62 /* Validate the length of size */
63 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
64 return 0;
65 }
66
67 char* ch = static_cast<char*>(malloc(size + 1));
68 if (ch == nullptr) {
69 return 0;
70 }
71
72 (void)memset_s(ch, size + 1, 0x00, size + 1);
73 if (memcpy_s(ch, size + 1, data, size) != EOK) {
74 free(ch);
75 ch = nullptr;
76 return 0;
77 }
78
79 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
80 free(ch);
81 ch = nullptr;
82 return 0;
83 }
84
85