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 "abilitymanagerserviceg_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "ability_manager_service.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
32 namespace OHOS {
33 namespace {
34 constexpr int INPUT_ZERO = 0;
35 constexpr int INPUT_ONE = 1;
36 constexpr int INPUT_THREE = 3;
37 constexpr size_t U32_AT_SIZE = 4;
38 constexpr uint8_t ENABLE = 2;
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[ENABLE] << OFFSET_TWO) |
48 ptr[INPUT_THREE];
49 }
50
GetFuzzAbilityToken()51 sptr<Token> GetFuzzAbilityToken()
52 {
53 sptr<Token> token = nullptr;
54 AbilityRequest abilityRequest;
55 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
56 abilityRequest.abilityInfo.name = "MainAbility";
57 abilityRequest.abilityInfo.type = AbilityType::DATA;
58 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
59 if (abilityRecord) {
60 token = abilityRecord->GetToken();
61 }
62 return token;
63 }
64
DoSomethingInterestingWithMyAPI(const char * data,size_t size)65 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
66 {
67 bool boolParam = *data % ENABLE;
68 std::string stringParam(data, size);
69 Parcel wantParcel;
70 Want* want = nullptr;
71 if (wantParcel.WriteBuffer(data, size)) {
72 want = Want::Unmarshalling(wantParcel);
73 if (!want) {
74 return false;
75 }
76 }
77 sptr<IRemoteObject> token = GetFuzzAbilityToken();
78 AbilityRequest abilityRequest;
79
80 // fuzz for AbilityManagerService
81 auto abilityms = std::make_shared<AbilityManagerService>();
82 abilityms->CheckCallAbilityPermission(abilityRequest);
83 abilityms->CheckStartByCallPermission(abilityRequest);
84 abilityms->IsCallFromBackground(abilityRequest, boolParam);
85 abilityms->CheckNewRuleSwitchState(stringParam);
86 abilityms->GetStartUpNewRuleFlag();
87 abilityms->AddStartControlParam(*want, token);
88 if (want) {
89 delete want;
90 want = nullptr;
91 }
92 return true;
93 }
94 }
95
96 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)97 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
98 {
99 /* Run your code on data */
100 if (data == nullptr) {
101 return 0;
102 }
103
104 /* Validate the length of size */
105 if (size < OHOS::U32_AT_SIZE) {
106 return 0;
107 }
108
109 char* ch = static_cast<char*>(malloc(size + 1));
110 if (ch == nullptr) {
111 std::cout << "malloc failed." << std::endl;
112 return 0;
113 }
114
115 (void)memset_s(ch, size + 1, 0x00, size + 1);
116 if (memcpy_s(ch, size, data, size) != EOK) {
117 std::cout << "copy failed." << std::endl;
118 free(ch);
119 ch = nullptr;
120 return 0;
121 }
122
123 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
124 free(ch);
125 ch = nullptr;
126 return 0;
127 }
128
129