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 "wantparamssecond_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <iostream>
21
22 #define private public
23 #include "want_params.h"
24 #undef private
25 #include "float_wrapper.h"
26 #include "securec.h"
27
28 using namespace OHOS::AAFwk;
29
30 namespace OHOS {
31 namespace {
32 constexpr size_t U32_AT_SIZE = 4;
33 }
GetU32Data(const char * ptr)34 uint32_t GetU32Data(const char* ptr)
35 {
36 // convert fuzz input data to an integer
37 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
38 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)39 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
40 {
41 WantParams wantOther;
42 std::shared_ptr<WantParams> wantParams = std::make_shared<WantParams>(wantOther);
43 Parcel parcel;
44 IArray* ao = nullptr;
45 wantParams->WriteArrayToParcelChar(parcel, ao);
46 wantParams->WriteArrayToParcelShort(parcel, ao);
47 wantParams->WriteToParcelFD(parcel, wantOther);
48 wantParams->WriteToParcelRemoteObject(parcel, wantOther);
49 float floatValue = 0.0;
50 sptr<IInterface> floatIt = Float::Box(floatValue);
51 wantParams->WriteToParcelFloat(parcel, floatIt);
52 int depth = static_cast<int>(GetU32Data(data));
53 wantParams->WriteArrayToParcelWantParams(parcel, ao, depth);
54 sptr<IArray> array;
55 wantParams->ReadFromParcelArrayChar(parcel, array);
56 wantParams->ReadFromParcelArrayShort(parcel, array);
57 std::string key(data ,size);
58 int type = static_cast<int>(GetU32Data(data));
59 wantParams->ReadFromParcelWantParamWrapper(parcel, key, type, 1);
60 wantParams->ReadFromParcelFD(parcel, key);
61 wantParams->ReadFromParcelRemoteObject(parcel, key);
62 wantParams->ReadFromParcelFloat(parcel, key);
63 return true;
64 }
65 }
66
67 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)68 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
69 {
70 /* Run your code on data */
71 if (data == nullptr) {
72 std::cout << "invalid data" << std::endl;
73 return 0;
74 }
75
76 /* Validate the length of size */
77 if (size < OHOS::U32_AT_SIZE) {
78 return 0;
79 }
80
81 char* ch = (char *)malloc(size + 1);
82 if (ch == nullptr) {
83 std::cout << "malloc failed." << std::endl;
84 return 0;
85 }
86
87 (void)memset_s(ch, size + 1, 0x00, size + 1);
88 if (memcpy_s(ch, size, data, size) != EOK) {
89 std::cout << "copy failed." << std::endl;
90 free(ch);
91 ch = nullptr;
92 return 0;
93 }
94
95 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
96 free(ch);
97 ch = nullptr;
98 return 0;
99 }
100