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 FOO_MAX_LEN = 1024;
39 constexpr size_t U32_AT_SIZE = 4;
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[INPUT_TWO] << 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 int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
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
79 // fuzz for AbilityManagerService
80 auto abilityms = std::make_shared<AbilityManagerService>();
81 abilityms->GetWMSHandler();
82 abilityms->CompleteFirstFrameDrawing(token);
83 abilityms->ShowPickerDialog(*want, int32Param, token);
84 std::vector<AppExecFwk::SupportWindowMode> windowModes;
85 abilityms->CheckWindowMode(int32Param, windowModes);
86 AbilityRequest abilityRequest;
87 abilityms->CheckCallServicePermission(abilityRequest);
88 abilityms->CheckCallDataAbilityPermission(abilityRequest, false);
89 abilityms->CreateVerificationInfo(abilityRequest);
90 abilityms->CheckCallServiceExtensionPermission(abilityRequest);
91 abilityms->CheckCallOtherExtensionPermission(abilityRequest);
92 abilityms->CheckCallServiceAbilityPermission(abilityRequest);
93 if (want) {
94 delete want;
95 want = nullptr;
96 }
97 return true;
98 }
99 }
100
101 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)102 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
103 {
104 /* Run your code on data */
105 if (data == nullptr) {
106 return 0;
107 }
108
109 /* Validate the length of size */
110 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
111 return 0;
112 }
113
114 char* ch = static_cast<char*>(malloc(size + 1));
115 if (ch == nullptr) {
116 std::cout << "malloc failed." << std::endl;
117 return 0;
118 }
119
120 (void)memset_s(ch, size + 1, 0x00, size + 1);
121 if (memcpy_s(ch, size, data, size) != EOK) {
122 std::cout << "copy failed." << std::endl;
123 free(ch);
124 ch = nullptr;
125 return 0;
126 }
127
128 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
129 free(ch);
130 ch = nullptr;
131 return 0;
132 }
133
134