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 "startabilityutils_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "start_ability_utils.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 FOO_MAX_LEN = 1024;
39 constexpr size_t U32_AT_SIZE = 4;
40 constexpr uint8_t ENABLE = 2;
41 constexpr size_t OFFSET_ZERO = 24;
42 constexpr size_t OFFSET_ONE = 16;
43 constexpr size_t OFFSET_TWO = 8;
44 }
45
GetU32Data(const char* ptr)46 uint32_t GetU32Data(const char* ptr)
47 {
48 // convert fuzz input data to an integer
49 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
50 ptr[INPUT_THREE];
51 }
52
GetFuzzAbilityToken()53 sptr<Token> GetFuzzAbilityToken()
54 {
55 sptr<Token> token = nullptr;
56 AbilityRequest abilityRequest;
57 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
58 abilityRequest.abilityInfo.name = "MainAbility";
59 abilityRequest.abilityInfo.type = AbilityType::DATA;
60 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
61 if (abilityRecord) {
62 token = abilityRecord->GetToken();
63 }
64 return token;
65 }
66
StartAbilityUtilsFuzztest1(bool boolParam, std::string &stringParam, int32_t int32Param)67 void StartAbilityUtilsFuzztest1(bool boolParam, std::string &stringParam, int32_t int32Param)
68 {
69 Want want;
70 sptr<Token> callerToken = GetFuzzAbilityToken();
71 StartAbilityUtils::GetAppIndex(want, callerToken, int32Param);
72 AppExecFwk::ApplicationInfo appInfo;
73 StartAbilityUtils::GetApplicationInfo(stringParam, int32Param, appInfo);
74 AppExecFwk::AbilityInfo abilityInfo;
75 StartAbilityUtils::GetCallerAbilityInfo(nullptr, abilityInfo);
76 StartAbilityUtils::GetCallerAbilityInfo(callerToken, abilityInfo);
77 StartAbilityUtils::CheckAppProvisionMode(want, int32Param);
78 std::shared_ptr<StartAbilityInfoWrap> startAbilityInfoWrap =
79 std::make_shared<StartAbilityInfoWrap>(want, int32Param, int32Param, callerToken, boolParam);
80 StartAbilityInfo::CreateStartAbilityInfo(want, int32Param, int32Param);
81 StartAbilityInfo::CreateCallerAbilityInfo(nullptr);
82 StartAbilityInfo::CreateCallerAbilityInfo(callerToken);
83 }
84
DoSomethingInterestingWithMyAPI(const char* data, size_t size)85 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
86 {
87 bool boolParam = *data % ENABLE;
88 std::string stringParam(data, size);
89 int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
90 StartAbilityUtilsFuzztest1(boolParam, stringParam, int32Param);
91 return true;
92 }
93 }
94
95 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)96 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
97 {
98 /* Run your code on data */
99 if (data == nullptr) {
100 return 0;
101 }
102
103 /* Validate the length of size */
104 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
105 return 0;
106 }
107
108 char* ch = (char*)malloc(size + 1);
109 if (ch == nullptr) {
110 std::cout << "malloc failed." << std::endl;
111 return 0;
112 }
113
114 (void)memset_s(ch, size + 1, 0x00, size + 1);
115 if (memcpy_s(ch, size, data, size) != EOK) {
116 std::cout << "copy failed." << std::endl;
117 free(ch);
118 ch = nullptr;
119 return 0;
120 }
121
122 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
123 free(ch);
124 ch = nullptr;
125 return 0;
126 }
127
128