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 "abilityinterfacesappmgrappforegroundstateobserverstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "app_foreground_state_observer_stub.h"
23 #include "app_foreground_state_observer_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 IA_APP_FOREGROUND_STATE_OBSERVER_TOKEN = u"ohos.appexecfwk.IAppForegroundStateObserver";
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 AppForegroundStateObserverStubFUZZ : public AppForegroundStateObserverStub {
55 public:
AppForegroundStateObserverStubFUZZ()56 explicit AppForegroundStateObserverStubFUZZ() {};
~AppForegroundStateObserverStubFUZZ()57 virtual ~ AppForegroundStateObserverStubFUZZ() {};
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; };
OnAppStateChanged(const AppStateData & appStateData)60 void OnAppStateChanged(const AppStateData &appStateData) override{};
61 };
62
GetFuzzAbilityToken()63 sptr<Token> GetFuzzAbilityToken()
64 {
65 sptr<Token> token = nullptr;
66 AbilityRequest abilityRequest;
67 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
68 abilityRequest.abilityInfo.name = "MainAbility";
69 abilityRequest.abilityInfo.type = AbilityType::DATA;
70 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
71 if (abilityRecord) {
72 token = abilityRecord->GetToken();
73 }
74 return token;
75 }
76
DoSomethingInterestingWithMyAPI(const char * data,size_t size)77 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
78 {
79 uint32_t code = static_cast<uint32_t>(IAppForegroundStateObserver::Message::ON_APP_STATE_CHANGED);
80 MessageParcel parcel;
81 parcel.WriteInterfaceToken(IA_APP_FOREGROUND_STATE_OBSERVER_TOKEN);
82 parcel.WriteBuffer(data, size);
83 parcel.RewindRead(0);
84 MessageParcel reply;
85 MessageOption option;
86 std::shared_ptr<AppForegroundStateObserverStub> abms =
87 std::make_shared<AppForegroundStateObserverStubFUZZ>();
88 abms->OnRemoteRequest(code, parcel, reply, option);
89 using RemoteDiedHandler = std::function<void(const wptr<IRemoteObject> &)>;
90 RemoteDiedHandler handler;
91 std::shared_ptr<AppForegroundStateObserverRecipient> infos =
92 std::make_shared<AppForegroundStateObserverRecipient>(handler);
93 wptr<IRemoteObject> remote;
94 infos->OnRemoteDied(remote);
95 return true;
96 }
97 }
98
99 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)100 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
101 {
102 /* Run your code on data */
103 if (data == nullptr) {
104 std::cout << "invalid data" << std::endl;
105 return 0;
106 }
107
108 /* Validate the length of size */
109 if (size > OHOS::FOO_MAX_LEN || 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 + 1, 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