1 /*
2 * Copyright (c) 2024 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 "faultdata_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "fault_data.h"
24 #undef protected
25 #undef private
26
27 #include "ability_record.h"
28
29 using namespace OHOS::AAFwk;
30 using namespace OHOS::AppExecFwk;
31 using namespace OHOS::AbilityRuntime;
32
33 namespace OHOS {
34 namespace {
35 constexpr int INPUT_ZERO = 0;
36 constexpr int INPUT_ONE = 1;
37 constexpr int INPUT_THREE = 3;
38 constexpr size_t U32_AT_SIZE = 4;
39 constexpr uint8_t ENABLE = 2;
40 constexpr size_t OFFSET_ZERO = 24;
41 constexpr size_t OFFSET_ONE = 16;
42 constexpr size_t OFFSET_TWO = 8;
43 }
44
GetU32Data(const char * ptr)45 uint32_t GetU32Data(const char* ptr)
46 {
47 // convert fuzz input data to an integer
48 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
49 ptr[INPUT_THREE];
50 }
51
GetFuzzAbilityToken()52 sptr<Token> GetFuzzAbilityToken()
53 {
54 sptr<Token> token = nullptr;
55 AbilityRequest abilityRequest;
56 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
57 abilityRequest.abilityInfo.name = "MainAbility";
58 abilityRequest.abilityInfo.type = AbilityType::DATA;
59 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
60 if (abilityRecord) {
61 token = abilityRecord->GetToken();
62 }
63 return token;
64 }
65
SetElement(Want & want)66 Want& SetElement(Want &want)
67 {
68 return want.SetElementName("deviceId", "bundleName", "ability", "moduleName");
69 }
70
FaultDataFuzztest1(bool boolParam,std::string & stringParam,int32_t int32Param)71 void FaultDataFuzztest1(bool boolParam, std::string &stringParam, int32_t int32Param)
72 {
73 FaultData faultData;
74 Parcel parcel1;
75 parcel1.WriteInt32(int32Param);
76 faultData.ReadFromParcel(parcel1); // branch name failed
77 Parcel parcel2;
78 parcel2.WriteString(stringParam);
79 parcel2.WriteInt32(int32Param);
80 faultData.ReadFromParcel(parcel2); // branch message failed
81 Parcel parcel3;
82 parcel3.WriteString(stringParam);
83 parcel3.WriteString(stringParam);
84 faultData.ReadFromParcel(parcel3); // branch stack failed
85 Parcel parcel4;
86 parcel4.WriteString(stringParam);
87 parcel4.WriteString(stringParam);
88 parcel4.WriteString(stringParam);
89 faultData.ReadFromParcel(parcel4); // branch FaultType failed
90
91 Parcel parcel5;
92 parcel5.WriteString(stringParam);
93 parcel5.WriteString(stringParam);
94 parcel5.WriteString(stringParam);
95 parcel5.WriteInt32(int32Param);
96 faultData.ReadFromParcel(parcel5); // branch FaultType failed
97
98 Parcel parcel6;
99 parcel6.WriteString(stringParam);
100 parcel6.WriteString(stringParam);
101 parcel6.WriteString(stringParam);
102 parcel6.WriteInt32(int32Param);
103 parcel6.WriteString(stringParam);
104 faultData.ReadFromParcel(parcel6); // branch FaultType failed
105 parcel6.WriteBool(boolParam);
106 faultData.ReadFromParcel(parcel6);
107 Parcel parcel7;
108 faultData.Marshalling(parcel7);
109 }
110
FaultDataFuzztest2(bool boolParam,std::string & stringParam,int32_t int32Param)111 void FaultDataFuzztest2(bool boolParam, std::string &stringParam, int32_t int32Param)
112 {
113 AppFaultDataBySA faultData;
114 Parcel appParcel1;
115 appParcel1.WriteInt32(int32Param);
116 faultData.ReadFromParcel(appParcel1); // branch name failed
117 Parcel appParcel2;
118 appParcel2.WriteString(stringParam);
119 appParcel2.WriteInt32(int32Param);
120 faultData.ReadFromParcel(appParcel2); // branch message failed
121 Parcel appParcel3;
122 appParcel3.WriteString(stringParam);
123 appParcel3.WriteString(stringParam);
124 faultData.ReadFromParcel(appParcel3); // branch stack failed
125 Parcel appParcel4;
126 appParcel4.WriteString(stringParam);
127 appParcel4.WriteString(stringParam);
128 appParcel4.WriteString(stringParam);
129 faultData.ReadFromParcel(appParcel4); // branch FaultType failed
130 Parcel appParcel5;
131 appParcel5.WriteString(stringParam);
132 appParcel5.WriteString(stringParam);
133 appParcel5.WriteString(stringParam);
134 appParcel5.WriteInt32(int32Param);
135 faultData.ReadFromParcel(appParcel5); // branch FaultType failed
136 Parcel appParcel6;
137 faultData.Marshalling(appParcel6);
138 }
139
DoSomethingInterestingWithMyAPI(const char * data,size_t size)140 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
141 {
142 bool boolParam = *data % ENABLE;
143 std::string stringParam(data, size);
144 int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
145 FaultDataFuzztest1(boolParam, stringParam, int32Param);
146 FaultDataFuzztest2(boolParam, stringParam, int32Param);
147 return true;
148 }
149 }
150
151 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)152 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
153 {
154 /* Run your code on data */
155 if (data == nullptr) {
156 return 0;
157 }
158
159 /* Validate the length of size */
160 if (size < OHOS::U32_AT_SIZE) {
161 return 0;
162 }
163
164 char* ch = static_cast<char*>(malloc(size + 1));
165 if (ch == nullptr) {
166 std::cout << "malloc failed." << std::endl;
167 return 0;
168 }
169
170 (void)memset_s(ch, size + 1, 0x00, size + 1);
171 if (memcpy_s(ch, size, data, size) != EOK) {
172 std::cout << "copy failed." << std::endl;
173 free(ch);
174 ch = nullptr;
175 return 0;
176 }
177
178 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
179 free(ch);
180 ch = nullptr;
181 return 0;
182 }
183
184