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 "abilitychildprocessinfo_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "child_process_info.h"
24 #undef protected
25 #undef private
26 #include "parcel.h"
27 #include <iostream>
28 #include "securec.h"
29 #include "configuration.h"
30 using namespace OHOS::AppExecFwk;
31 namespace OHOS {
32 namespace {
33 constexpr int INPUT_ZERO = 0;
34 constexpr int INPUT_ONE = 1;
35 constexpr int INPUT_TWO = 2;
36 constexpr int INPUT_THREE = 3;
37 constexpr size_t FOO_MAX_LEN = 1024;
38 constexpr size_t U32_AT_SIZE = 4;
39 constexpr size_t OFFSET_ZERO = 24;
40 constexpr size_t OFFSET_ONE = 16;
41 constexpr size_t OFFSET_TWO = 8;
42 }
43
GetU32Data(const char* ptr)44 uint32_t GetU32Data(const char* ptr)
45 {
46 // convert fuzz input data to an integer
47 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
48 ptr[INPUT_THREE];
49 }
50
DoSomethingInterestingWithMyAPI(const char* data, size_t size)51 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
52 {
53 std::shared_ptr<ChildProcessInfo>childProcessInfo = std::make_shared<ChildProcessInfo>();
54 if (childProcessInfo == nullptr) {
55 return false;
56 }
57 Parcel parcel;
58 childProcessInfo->ReadFromParcel(parcel);
59 childProcessInfo->Marshalling(parcel);
60 ChildProcessInfo::Unmarshalling(parcel);
61 return true;
62 }
63 }
64
65 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)66 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
67 {
68 /* Run your code on data */
69 if (data == nullptr) {
70 return 0;
71 }
72
73 /* Validate the length of size */
74 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
75 return 0;
76 }
77
78 char* ch = (char*)malloc(size + 1);
79 if (ch == nullptr) {
80 std::cout << "malloc failed." << std::endl;
81 return 0;
82 }
83
84 (void)memset_s(ch, size + 1, 0x00, size + 1);
85 if (memcpy_s(ch, size, data, size) != EOK) {
86 std::cout << "copy failed." << std::endl;
87 free(ch);
88 ch = nullptr;
89 return 0;
90 }
91
92 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
93 free(ch);
94 ch = nullptr;
95 return 0;
96 }
97
98