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 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 constexpr uint8_t ENABLE = 2;
44 }
45 const std::u16string CHILD_SCHEDULER_TOKEN = u"ohos.appexecfwk.ChildScheduler";
GetU32Data(const char * ptr)46 uint32_t GetU32Data(const char* ptr)
47 {
48 // convert fuzz input data to an integer
49 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
50 ptr[INPUT_THREE];
51 }
52
53 class ChildSchedulerStubFUZZ : public ChildSchedulerStub {
54 public:
ChildSchedulerStubFUZZ()55 explicit ChildSchedulerStubFUZZ() {};
~ChildSchedulerStubFUZZ()56 virtual ~ ChildSchedulerStubFUZZ() {};
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)57 int OnRemoteRequest(
58 uint32_t code, MessageParcel &data, MessageParcel &reply, MessageOption &option) override{ return 0; };
ScheduleLoadChild()59 bool ScheduleLoadChild() override{ return true; };
ScheduleExitProcessSafely()60 bool ScheduleExitProcessSafely() override{ return true; };
ScheduleRunNativeProc(const sptr<IRemoteObject> & mainProcessCb)61 bool ScheduleRunNativeProc(const sptr<IRemoteObject> &mainProcessCb) override{ return true; };
62 };
63
GetFuzzAbilityToken()64 sptr<Token> GetFuzzAbilityToken()
65 {
66 sptr<Token> token = nullptr;
67 AbilityRequest abilityRequest;
68 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
69 abilityRequest.abilityInfo.name = "MainAbility";
70 abilityRequest.abilityInfo.type = AbilityType::DATA;
71 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
72 if (abilityRecord) {
73 token = abilityRecord->GetToken();
74 }
75 return token;
76 }
77
DoSomethingInterestingWithMyAPI(const char * data,size_t size)78 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
79 {
80 uint32_t code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_LOAD_JS);
81 MessageParcel parcel;
82 parcel.WriteInterfaceToken(CHILD_SCHEDULER_TOKEN);
83 parcel.WriteBuffer(data, size);
84 parcel.RewindRead(0);
85 MessageParcel reply;
86 MessageOption option;
87 std::shared_ptr<ChildSchedulerStub> abms = std::make_shared<ChildSchedulerStubFUZZ>();
88 abms->OnRemoteRequest(code, parcel, reply, option);
89 code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_EXIT_PROCESS_SAFELY);
90 abms->OnRemoteRequest(code, parcel, reply, option);
91 code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_RUN_NATIVE_PROC);
92 abms->OnRemoteRequest(code, parcel, reply, option);
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 std::cout << "invalid data" << std::endl;
103 return 0;
104 }
105
106 /* Validate the length of size */
107 if (size < OHOS::U32_AT_SIZE) {
108 return 0;
109 }
110
111 char* ch = static_cast<char*>(malloc(size + 1));
112 if (ch == nullptr) {
113 std::cout << "malloc failed." << std::endl;
114 return 0;
115 }
116
117 (void)memset_s(ch, size + 1, 0x00, size + 1);
118 if (memcpy_s(ch, size + 1, data, size) != EOK) {
119 std::cout << "copy failed." << std::endl;
120 free(ch);
121 ch = nullptr;
122 return 0;
123 }
124
125 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
126 free(ch);
127 ch = nullptr;
128 return 0;
129 }
130
131