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 FOO_MAX_LEN = 1024;
33 constexpr size_t U32_AT_SIZE = 4;
34 }
GetU32Data(const char * ptr)35 uint32_t GetU32Data(const char* ptr)
36 {
37 // convert fuzz input data to an integer
38 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
39 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)40 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
41 {
42 WantParams wantOther;
43 std::shared_ptr<WantParams> wantParams = std::make_shared<WantParams>(wantOther);
44 Parcel parcel;
45 IArray* ao = nullptr;
46 wantParams->WriteArrayToParcelChar(parcel, ao);
47 wantParams->WriteArrayToParcelShort(parcel, ao);
48 wantParams->WriteToParcelFD(parcel, wantOther);
49 wantParams->WriteToParcelRemoteObject(parcel, wantOther);
50 float floatValue = 0.0;
51 sptr<IInterface> floatIt = Float::Box(floatValue);
52 wantParams->WriteToParcelFloat(parcel, floatIt);
53 int depth = static_cast<int>(GetU32Data(data));
54 wantParams->WriteArrayToParcelWantParams(parcel, ao, depth);
55 sptr<IArray> array;
56 wantParams->ReadFromParcelArrayChar(parcel, array);
57 wantParams->ReadFromParcelArrayShort(parcel, array);
58 std::string key(data ,size);
59 int type = static_cast<int>(GetU32Data(data));
60 wantParams->ReadFromParcelWantParamWrapper(parcel, key, type, 1);
61 wantParams->ReadFromParcelFD(parcel, key);
62 wantParams->ReadFromParcelRemoteObject(parcel, key);
63 wantParams->ReadFromParcelFloat(parcel, key);
64 return true;
65 }
66 }
67
68 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)69 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
70 {
71 /* Run your code on data */
72 if (data == nullptr) {
73 std::cout << "invalid data" << std::endl;
74 return 0;
75 }
76
77 /* Validate the length of size */
78 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
79 return 0;
80 }
81
82 char* ch = (char *)malloc(size + 1);
83 if (ch == nullptr) {
84 std::cout << "malloc failed." << std::endl;
85 return 0;
86 }
87
88 (void)memset_s(ch, size + 1, 0x00, size + 1);
89 if (memcpy_s(ch, size, data, size) != EOK) {
90 std::cout << "copy failed." << std::endl;
91 free(ch);
92 ch = nullptr;
93 return 0;
94 }
95
96 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
97 free(ch);
98 ch = nullptr;
99 return 0;
100 }
101