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 "abilitymanagerservicef_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_TWO = 2;
37 constexpr int INPUT_THREE = 3;
38 constexpr size_t U32_AT_SIZE = 4;
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[INPUT_TWO] << 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 int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
68 Parcel wantParcel;
69 Want* want = nullptr;
70 if (wantParcel.WriteBuffer(data, size)) {
71 want = Want::Unmarshalling(wantParcel);
72 if (!want) {
73 return false;
74 }
75 }
76 sptr<IRemoteObject> token = GetFuzzAbilityToken();
77
78 // fuzz for AbilityManagerService
79 auto abilityms = std::make_shared<AbilityManagerService>();
80 abilityms->GetWMSHandler();
81 abilityms->CompleteFirstFrameDrawing(token);
82 abilityms->ShowPickerDialog(*want, int32Param, token);
83 std::vector<AppExecFwk::SupportWindowMode> windowModes;
84 abilityms->CheckWindowMode(int32Param, windowModes);
85 AbilityRequest abilityRequest;
86 abilityms->CheckCallServicePermission(abilityRequest);
87 abilityms->CheckCallDataAbilityPermission(abilityRequest, false);
88 abilityms->CreateVerificationInfo(abilityRequest);
89 abilityms->CheckCallServiceExtensionPermission(abilityRequest);
90 abilityms->CheckCallOtherExtensionPermission(abilityRequest);
91 abilityms->CheckCallServiceAbilityPermission(abilityRequest);
92 if (want) {
93 delete want;
94 want = nullptr;
95 }
96 return true;
97 }
98 }
99
100 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)101 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
102 {
103 /* Run your code on data */
104 if (data == nullptr) {
105 return 0;
106 }
107
108 /* Validate the length of size */
109 if (size < OHOS::U32_AT_SIZE) {
110 return 0;
111 }
112
113 char* ch = static_cast<char*>(malloc(size + 1));
114 if (ch == nullptr) {
115 std::cout << "malloc failed." << std::endl;
116 return 0;
117 }
118
119 (void)memset_s(ch, size + 1, 0x00, size + 1);
120 if (memcpy_s(ch, size, data, size) != EOK) {
121 std::cout << "copy failed." << std::endl;
122 free(ch);
123 ch = nullptr;
124 return 0;
125 }
126
127 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
128 free(ch);
129 ch = nullptr;
130 return 0;
131 }
132
133