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 size_t FOO_MAX_LEN = 1024;
35 constexpr size_t U32_AT_SIZE = 4;
36 constexpr uint8_t ENABLE = 2;
37 }
38
GetU32Data(const char * ptr)39 uint32_t GetU32Data(const char* ptr)
40 {
41 // convert fuzz input data to an integer
42 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
43 }
44
GetFuzzAbilityToken()45 sptr<Token> GetFuzzAbilityToken()
46 {
47 sptr<Token> token = nullptr;
48 AbilityRequest abilityRequest;
49 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
50 abilityRequest.abilityInfo.name = "MainAbility";
51 abilityRequest.abilityInfo.type = AbilityType::DATA;
52 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
53 if (abilityRecord) {
54 token = abilityRecord->GetToken();
55 }
56 return token;
57 }
58
DoSomethingInterestingWithMyAPI(const char * data,size_t size)59 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
60 {
61 bool boolParam = *data % ENABLE;
62 int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
63 std::string stringParam(data, size);
64 Parcel wantParcel;
65 Want *want = nullptr;
66 if (wantParcel.WriteBuffer(data, size)) {
67 want = Want::Unmarshalling(wantParcel);
68 if (!want) {
69 return false;
70 }
71 }
72 sptr<IRemoteObject> token = GetFuzzAbilityToken();
73 AbilityRequest abilityRequest;
74
75 // fuzz for AbilityManagerService
76 auto abilityms = std::make_shared<AbilityManagerService>();
77 MissionSnapshot missionSnapshot;
78 abilityms->GetRemoteMissionSnapshotInfo(stringParam, int32Param, missionSnapshot);
79 abilityms->CheckCallAbilityPermission(abilityRequest);
80 abilityms->CheckStartByCallPermission(abilityRequest);
81 abilityms->IsCallFromBackground(abilityRequest, boolParam);
82 abilityms->CheckCallerPermissionOldRule(abilityRequest, boolParam);
83 abilityms->IsUseNewStartUpRule(abilityRequest);
84 abilityms->CheckNewRuleSwitchState(stringParam);
85 abilityms->GetStartUpNewRuleFlag();
86 abilityms->AddStartControlParam(*want, token);
87
88 return true;
89 }
90 }
91
92 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)93 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
94 {
95 /* Run your code on data */
96 if (data == nullptr) {
97 return 0;
98 }
99
100 /* Validate the length of size */
101 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
102 return 0;
103 }
104
105 char* ch = (char *)malloc(size + 1);
106 if (ch == nullptr) {
107 std::cout << "malloc failed." << std::endl;
108 return 0;
109 }
110
111 (void)memset_s(ch, size + 1, 0x00, size + 1);
112 if (memcpy_s(ch, size, data, size) != EOK) {
113 std::cout << "copy failed." << std::endl;
114 free(ch);
115 ch = nullptr;
116 return 0;
117 }
118
119 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
120 free(ch);
121 ch = nullptr;
122 return 0;
123 }
124
125