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 "wantparamsfirst_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 "string_wrapper.h"
26 #include "byte_wrapper.h"
27 #include "want_params_wrapper.h"
28 #include "securec.h"
29
30 using namespace OHOS::AAFwk;
31
32 namespace OHOS {
33 namespace {
34 constexpr size_t FOO_MAX_LEN = 1024;
35 constexpr size_t U32_AT_SIZE = 4;
36 }
GetU32Data(const char * ptr)37 uint32_t GetU32Data(const char* ptr)
38 {
39 // convert fuzz input data to an integer
40 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
41 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)42 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
43 {
44 UnsupportedData other;
45 std::shared_ptr<UnsupportedData> unsupportedData = std::make_shared<UnsupportedData>(other);
46 WantParams wantOther;
47 std::shared_ptr<WantParams> wantParams = std::make_shared<WantParams>(wantOther);
48 std::string key(data, size);
49 int8_t byteValue = static_cast<int8_t>(GetU32Data(data));
50 sptr<IInterface> stringIt = String::Box(key);
51 wantParams->SetParam(key, stringIt);
52 wantParams->GetWantParams(key);
53 wantParams->GetStringParam(key);
54 int defaultValue = static_cast<int>(GetU32Data(data));
55 wantParams->GetIntParam(key, defaultValue);
56 wantParams->KeySet();
57 wantParams->HasParam(key);
58 wantParams->IsEmpty();
59 int level = static_cast<int32_t>(GetU32Data(data));
60 wantParams->DumpInfo(level);
61 Parcel parcel;
62 sptr<IInterface> byteIt = Byte::Box(byteValue);
63 int depth = static_cast<int>(GetU32Data(data));
64 wantParams->WriteToParcelWantParams(parcel, byteIt, depth);
65 wantParams->WriteToParcelByte(parcel, byteIt);
66 return true;
67 }
68 }
69
70 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)71 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
72 {
73 /* Run your code on data */
74 if (data == nullptr) {
75 std::cout << "invalid data" << std::endl;
76 return 0;
77 }
78
79 /* Validate the length of size */
80 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
81 return 0;
82 }
83
84 char* ch = (char *)malloc(size + 1);
85 if (ch == nullptr) {
86 std::cout << "malloc failed." << std::endl;
87 return 0;
88 }
89
90 (void)memset_s(ch, size + 1, 0x00, size + 1);
91 if (memcpy_s(ch, size, data, size) != EOK) {
92 std::cout << "copy failed." << std::endl;
93 free(ch);
94 ch = nullptr;
95 return 0;
96 }
97
98 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103