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 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 IA_APP_FOREGROUND_STATE_OBSERVER_TOKEN = u"ohos.appexecfwk.IAppForegroundStateObserver";
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 AppForegroundStateObserverStubFUZZ : public AppForegroundStateObserverStub {
54 public:
AppForegroundStateObserverStubFUZZ()55 explicit AppForegroundStateObserverStubFUZZ() {};
~AppForegroundStateObserverStubFUZZ()56 virtual ~ AppForegroundStateObserverStubFUZZ() {};
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; };
OnAppStateChanged(const AppStateData & appStateData)59 void OnAppStateChanged(const AppStateData &appStateData) override{};
60 };
61
GetFuzzAbilityToken()62 sptr<Token> GetFuzzAbilityToken()
63 {
64 sptr<Token> token = nullptr;
65 AbilityRequest abilityRequest;
66 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
67 abilityRequest.abilityInfo.name = "MainAbility";
68 abilityRequest.abilityInfo.type = AbilityType::DATA;
69 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
70 if (abilityRecord) {
71 token = abilityRecord->GetToken();
72 }
73 return token;
74 }
75
DoSomethingInterestingWithMyAPI(const char * data,size_t size)76 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
77 {
78 uint32_t code = static_cast<uint32_t>(IAppForegroundStateObserver::Message::ON_APP_STATE_CHANGED);
79 MessageParcel parcel;
80 parcel.WriteInterfaceToken(IA_APP_FOREGROUND_STATE_OBSERVER_TOKEN);
81 parcel.WriteBuffer(data, size);
82 parcel.RewindRead(0);
83 MessageParcel reply;
84 MessageOption option;
85 std::shared_ptr<AppForegroundStateObserverStub> abms =
86 std::make_shared<AppForegroundStateObserverStubFUZZ>();
87 abms->OnRemoteRequest(code, parcel, reply, option);
88 using RemoteDiedHandler = std::function<void(const wptr<IRemoteObject> &)>;
89 RemoteDiedHandler handler;
90 std::shared_ptr<AppForegroundStateObserverRecipient> infos =
91 std::make_shared<AppForegroundStateObserverRecipient>(handler);
92 wptr<IRemoteObject> remote;
93 infos->OnRemoteDied(remote);
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::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