1 /*
2 * Copyright (c) 2024 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 "abilityinterfacesappmgrchildschedulerstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "child_scheduler_stub.h"
23 #include "child_scheduler_interface.h"
24 #undef private
25
26 #include "securec.h"
27 #include "parcel.h"
28 #include "ability_record.h"
29
30 using namespace OHOS::AAFwk;
31 using namespace OHOS::AppExecFwk;
32
33 namespace OHOS {
34 namespace {
35 constexpr int INPUT_ZERO = 0;
36 constexpr int INPUT_ONE = 1;
37 constexpr int INPUT_TWO = 2;
38 constexpr int INPUT_THREE = 3;
39 constexpr size_t FOO_MAX_LEN = 1024;
40 constexpr size_t U32_AT_SIZE = 4;
41 constexpr size_t OFFSET_ZERO = 24;
42 constexpr size_t OFFSET_ONE = 16;
43 constexpr size_t OFFSET_TWO = 8;
44 constexpr uint8_t ENABLE = 2;
45 }
46 const std::u16string CHILD_SCHEDULER_TOKEN = u"ohos.appexecfwk.ChildScheduler";
GetU32Data(const char * ptr)47 uint32_t GetU32Data(const char* ptr)
48 {
49 // convert fuzz input data to an integer
50 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
51 ptr[INPUT_THREE];
52 }
53
54 class ChildSchedulerStubFUZZ : public ChildSchedulerStub {
55 public:
ChildSchedulerStubFUZZ()56 explicit ChildSchedulerStubFUZZ() {};
~ChildSchedulerStubFUZZ()57 virtual ~ ChildSchedulerStubFUZZ() {};
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)58 int OnRemoteRequest(
59 uint32_t code, MessageParcel &data, MessageParcel &reply, MessageOption &option) override{ return 0; };
ScheduleLoadChild()60 bool ScheduleLoadChild() override{ return true; };
ScheduleExitProcessSafely()61 bool ScheduleExitProcessSafely() override{ return true; };
ScheduleRunNativeProc(const sptr<IRemoteObject> & mainProcessCb)62 bool ScheduleRunNativeProc(const sptr<IRemoteObject> &mainProcessCb) override{ return true; };
63 };
64
GetFuzzAbilityToken()65 sptr<Token> GetFuzzAbilityToken()
66 {
67 sptr<Token> token = nullptr;
68 AbilityRequest abilityRequest;
69 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
70 abilityRequest.abilityInfo.name = "MainAbility";
71 abilityRequest.abilityInfo.type = AbilityType::DATA;
72 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
73 if (abilityRecord) {
74 token = abilityRecord->GetToken();
75 }
76 return token;
77 }
78
DoSomethingInterestingWithMyAPI(const char * data,size_t size)79 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
80 {
81 uint32_t code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_LOAD_JS);
82 MessageParcel parcel;
83 parcel.WriteInterfaceToken(CHILD_SCHEDULER_TOKEN);
84 parcel.WriteBuffer(data, size);
85 parcel.RewindRead(0);
86 MessageParcel reply;
87 MessageOption option;
88 std::shared_ptr<ChildSchedulerStub> abms = std::make_shared<ChildSchedulerStubFUZZ>();
89 abms->OnRemoteRequest(code, parcel, reply, option);
90 code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_EXIT_PROCESS_SAFELY);
91 abms->OnRemoteRequest(code, parcel, reply, option);
92 code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_RUN_NATIVE_PROC);
93 abms->OnRemoteRequest(code, parcel, reply, option);
94 return true;
95 }
96 }
97
98 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)99 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
100 {
101 /* Run your code on data */
102 if (data == nullptr) {
103 std::cout << "invalid data" << std::endl;
104 return 0;
105 }
106
107 /* Validate the length of size */
108 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
109 return 0;
110 }
111
112 char* ch = static_cast<char*>(malloc(size + 1));
113 if (ch == nullptr) {
114 std::cout << "malloc failed." << std::endl;
115 return 0;
116 }
117
118 (void)memset_s(ch, size + 1, 0x00, size + 1);
119 if (memcpy_s(ch, size + 1, data, size) != EOK) {
120 std::cout << "copy failed." << std::endl;
121 free(ch);
122 ch = nullptr;
123 return 0;
124 }
125
126 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
127 free(ch);
128 ch = nullptr;
129 return 0;
130 }
131
132