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 FOO_MAX_LEN = 1024;
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
DoSomethingInterestingWithMyAPI(const char * data,size_t size)66 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
67 {
68 bool boolParam = *data % ENABLE;
69 std::string stringParam(data, size);
70 Parcel wantParcel;
71 Want* want = nullptr;
72 if (wantParcel.WriteBuffer(data, size)) {
73 want = Want::Unmarshalling(wantParcel);
74 if (!want) {
75 return false;
76 }
77 }
78 sptr<IRemoteObject> token = GetFuzzAbilityToken();
79 AbilityRequest abilityRequest;
80
81 // fuzz for AbilityManagerService
82 auto abilityms = std::make_shared<AbilityManagerService>();
83 abilityms->CheckCallAbilityPermission(abilityRequest);
84 abilityms->CheckStartByCallPermission(abilityRequest);
85 abilityms->IsCallFromBackground(abilityRequest, boolParam);
86 abilityms->CheckNewRuleSwitchState(stringParam);
87 abilityms->GetStartUpNewRuleFlag();
88 abilityms->AddStartControlParam(*want, token);
89 if (want) {
90 delete want;
91 want = nullptr;
92 }
93 return true;
94 }
95 }
96
97 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)98 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
99 {
100 /* Run your code on data */
101 if (data == nullptr) {
102 return 0;
103 }
104
105 /* Validate the length of size */
106 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
107 return 0;
108 }
109
110 char* ch = static_cast<char*>(malloc(size + 1));
111 if (ch == nullptr) {
112 std::cout << "malloc failed." << std::endl;
113 return 0;
114 }
115
116 (void)memset_s(ch, size + 1, 0x00, size + 1);
117 if (memcpy_s(ch, size, data, size) != EOK) {
118 std::cout << "copy failed." << std::endl;
119 free(ch);
120 ch = nullptr;
121 return 0;
122 }
123
124 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
125 free(ch);
126 ch = nullptr;
127 return 0;
128 }
129
130