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 "connectionstatemanager_fuzzer.h"
17 
18 #include <cstddef>
19 #include <cstdint>
20 
21 #define private public
22 #define protected public
23 #include "connection_observer_controller.h"
24 #include "connection_record.h"
25 #include "connection_state_item.h"
26 #include "connection_state_manager.h"
27 #undef protected
28 #undef private
29 
30 #include "ability_record.h"
31 #include "continuous_task_callback_info.h"
32 
33 using namespace OHOS::AAFwk;
34 using namespace OHOS::AppExecFwk;
35 using namespace OHOS::AbilityRuntime;
36 
37 namespace OHOS {
38 namespace {
39 constexpr size_t FOO_MAX_LEN = 1024;
40 constexpr size_t U32_AT_SIZE = 4;
41 constexpr uint8_t ENABLE = 2;
42 class MyAbilityConnection : public IAbilityConnection {
43 public:
44     MyAbilityConnection() = default;
45     virtual ~MyAbilityConnection() = default;
OnAbilityConnectDone(const AppExecFwk::ElementName & element,const sptr<IRemoteObject> & remoteObject,int resultCode)46     void OnAbilityConnectDone(
47         const AppExecFwk::ElementName& element, const sptr<IRemoteObject>& remoteObject, int resultCode) override
48     {}
OnAbilityDisconnectDone(const AppExecFwk::ElementName & element,int resultCode)49     void OnAbilityDisconnectDone(const AppExecFwk::ElementName& element, int resultCode) override
50     {}
AsObject()51     sptr<IRemoteObject> AsObject() override
52     {
53         return {};
54     }
55 };
56 class MyAbilityConnectionObserver : public IConnectionObserver {
57 public:
58     MyAbilityConnectionObserver() = default;
59     virtual ~MyAbilityConnectionObserver() = default;
OnExtensionConnected(const ConnectionData & data)60     void OnExtensionConnected(const ConnectionData& data) override
61     {}
OnExtensionDisconnected(const ConnectionData & data)62     void OnExtensionDisconnected(const ConnectionData& data) override
63     {}
64 #ifdef WITH_DLP
OnDlpAbilityOpened(const DlpStateData & data)65     void OnDlpAbilityOpened(const DlpStateData& data) override
66     {}
OnDlpAbilityClosed(const DlpStateData & data)67     void OnDlpAbilityClosed(const DlpStateData& data) override
68     {}
69 #endif // WITH_DLP
AsObject()70     sptr<IRemoteObject> AsObject() override
71     {
72         return {};
73     }
74 };
75 }
76 
GetU32Data(const char * ptr)77 uint32_t GetU32Data(const char* ptr)
78 {
79     // convert fuzz input data to an integer
80     return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
81 }
82 
GetFuzzAbilityRecord()83 std::shared_ptr<AbilityRecord> GetFuzzAbilityRecord()
84 {
85     sptr<Token> token = nullptr;
86     AbilityRequest abilityRequest;
87     abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
88     abilityRequest.abilityInfo.name = "MainAbility";
89     abilityRequest.abilityInfo.type = AbilityType::DATA;
90     std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
91     if (!abilityRecord) {
92         return nullptr;
93     }
94     return abilityRecord;
95 }
96 
GetFuzzAbilityToken()97 sptr<Token> GetFuzzAbilityToken()
98 {
99     sptr<Token> token = nullptr;
100     std::shared_ptr<AbilityRecord> abilityRecord = GetFuzzAbilityRecord();
101     if (abilityRecord) {
102         token = abilityRecord->GetToken();
103     }
104     return token;
105 }
106 
DoSomethingInterestingWithMyAPI(const char * data,size_t size)107 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
108 {
109     bool boolParam = *data % ENABLE;
110     int intParam = static_cast<int>(GetU32Data(data));
111     int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
112     std::string stringParam(data, size);
113     Parcel wantParcel;
114     Want* want = nullptr;
115     if (wantParcel.WriteBuffer(data, size)) {
116         want = Want::Unmarshalling(wantParcel);
117         if (!want) {
118             return false;
119         }
120     }
121     sptr<IRemoteObject> token = GetFuzzAbilityToken();
122     sptr<IAbilityConnection> connect = new MyAbilityConnection();
123     sptr<AbilityRuntime::IConnectionObserver> observer = new MyAbilityConnectionObserver();
124     std::vector<std::string> info;
125     AbilityRuntime::ConnectionData connectionData;
126 
127     // fuzz for ConnectionObserverController
128     auto connectionObserverController = std::make_shared<ConnectionObserverController>();
129     connectionObserverController->AddObserver(observer);
130     connectionObserverController->RemoveObserver(observer);
131     connectionObserverController->NotifyExtensionConnected(connectionData);
132     connectionObserverController->NotifyExtensionDisconnected(connectionData);
133 #ifdef WITH_DLP
134     AbilityRuntime::DlpStateData dlpStateData;
135     connectionObserverController->NotifyDlpAbilityOpened(dlpStateData);
136     connectionObserverController->NotifyDlpAbilityClosed(dlpStateData);
137 #endif // WITH_DLP
138     connectionObserverController->GetObservers();
139     wptr<IRemoteObject> remote;
140     connectionObserverController->HandleRemoteDied(remote);
141     ConnectionObserverController::ObserverDeathRecipient::ObserverDeathHandler handler;
142     std::shared_ptr<ConnectionObserverController::ObserverDeathRecipient> observerDeathRecipient =
143         std::make_shared<ConnectionObserverController::ObserverDeathRecipient>(handler);
144     observerDeathRecipient->OnRemoteDied(remote);
145 
146     // fuzz for ConnectionRecord
147     std::shared_ptr<AbilityRecord> targetService = GetFuzzAbilityRecord();
148     auto connectionRecord = std::make_shared<ConnectionRecord>(token, targetService, connect);
149     connectionRecord->CreateConnectionRecord(token, targetService, connect);
150     ConnectionState state = ConnectionState::CONNECTED;
151     connectionRecord->SetConnectState(state);
152     connectionRecord->GetConnectState();
153     connectionRecord->GetToken();
154     connectionRecord->GetAbilityRecord();
155     connectionRecord->GetAbilityConnectCallback();
156     connectionRecord->ClearConnCallBack();
157     connectionRecord->DisconnectAbility();
158     connectionRecord->CompleteConnect();
159     connectionRecord->CompleteDisconnect(intParam, boolParam);
160     connectionRecord->ScheduleDisconnectAbilityDone();
161     connectionRecord->ScheduleConnectAbilityDone();
162     connectionRecord->DisconnectTimeout();
163     connectionRecord->ConvertConnectionState(state);
164     connectionRecord->Dump(info);
165     connectionRecord->AttachCallerInfo();
166     connectionRecord->GetCallerUid();
167     connectionRecord->GetCallerPid();
168     connectionRecord->GetCallerName();
169     connectionRecord->GetTargetToken();
170     connectionRecord->GetConnection();
171 
172     // fuzz for ConnectionRecord
173     auto connectionStateItem = std::make_shared<ConnectionStateItem>(int32Param, int32Param, stringParam);
174     std::shared_ptr<ConnectionRecord> record;
175     connectionStateItem->CreateConnectionStateItem(record);
176     DataAbilityCaller dataCaller;
177     connectionStateItem->CreateConnectionStateItem(dataCaller);
178     connectionStateItem->AddConnection(record, connectionData);
179     connectionStateItem->RemoveConnection(record, connectionData);
180     std::shared_ptr<DataAbilityRecord> dataAbility;
181     connectionStateItem->AddDataAbilityConnection(dataCaller, dataAbility, connectionData);
182     connectionStateItem->RemoveDataAbilityConnection(dataCaller, dataAbility, connectionData);
183     connectionStateItem->HandleDataAbilityDied(token, connectionData);
184     connectionStateItem->IsEmpty();
185     std::vector<AbilityRuntime::ConnectionData> datas;
186     connectionStateItem->GenerateAllConnectionData(datas);
187     std::shared_ptr<ConnectedExtension> connectedExtension;
188     connectionStateItem->GenerateConnectionData(connectedExtension, connectionData);
189     std::shared_ptr<ConnectedDataAbility> connectedDataAbility;
190     connectionStateItem->GenerateConnectionData(connectedDataAbility, connectionData);
191 
192     // fuzz for ConnectionStateManager
193     auto connectionStateManager = std::make_shared<ConnectionStateManager>();
194     connectionStateManager->GetProcessNameByPid(int32Param);
195     connectionStateManager->Init();
196     connectionStateManager->RegisterObserver(observer);
197     connectionStateManager->UnregisterObserver(observer);
198     connectionStateManager->AddConnection(record);
199     connectionStateManager->RemoveConnection(record, boolParam);
200     connectionStateManager->AddDataAbilityConnection(dataCaller, dataAbility);
201     connectionStateManager->RemoveDataAbilityConnection(dataCaller, dataAbility);
202     connectionStateManager->CheckDataAbilityConnectionParams(dataCaller, dataAbility);
203     connectionStateManager->HandleDataAbilityDied(dataAbility);
204     connectionStateManager->HandleDataAbilityCallerDied(int32Param);
205 #ifdef WITH_DLP
206     std::shared_ptr<AbilityRecord> dlpManger = GetFuzzAbilityRecord();
207     connectionStateManager->AddDlpManager(dlpManger);
208     connectionStateManager->RemoveDlpManager(dlpManger);
209     connectionStateManager->AddDlpAbility(dlpManger);
210     connectionStateManager->RemoveDlpAbility(dlpManger);
211 #endif // WITH_DLP
212     connectionStateManager->HandleAppDied(int32Param);
213 #ifdef WITH_DLP
214     std::vector<AbilityRuntime::DlpConnectionInfo> infos;
215     connectionStateManager->GetDlpConnectionInfos(infos);
216 #endif // WITH_DLP
217     connectionStateManager->AddConnectionInner(connectionRecord, connectionData);
218     connectionStateManager->RemoveConnectionInner(connectionRecord, connectionData);
219     connectionStateManager->HandleCallerDied(int32Param);
220     connectionStateManager->RemoveDiedCaller(int32Param);
221     connectionStateManager->AddDataAbilityConnectionInner(dataCaller, dataAbility, connectionData);
222     connectionStateManager->RemoveDataAbilityConnectionInner(dataCaller, dataAbility, connectionData);
223     connectionStateManager->HandleDataAbilityDiedInner(token, datas);
224 #ifdef WITH_DLP
225     AbilityRuntime::DlpStateData dlpData;
226     connectionStateManager->HandleDlpAbilityInner(dlpManger, boolParam, dlpData);
227 #endif // WITH_DLP
228     connectionStateManager->InitAppStateObserver();
229     if (want) {
230         delete want;
231         want = nullptr;
232     }
233     return true;
234 }
235 }
236 
237 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)238 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
239 {
240     /* Run your code on data */
241     if (data == nullptr) {
242         return 0;
243     }
244 
245     /* Validate the length of size */
246     if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
247         return 0;
248     }
249 
250     char* ch = static_cast<char*>(malloc(size + 1));
251     if (ch == nullptr) {
252         std::cout << "malloc failed." << std::endl;
253         return 0;
254     }
255 
256     (void)memset_s(ch, size + 1, 0x00, size + 1);
257     if (memcpy_s(ch, size, data, size) != EOK) {
258         std::cout << "copy failed." << std::endl;
259         free(ch);
260         ch = nullptr;
261         return 0;
262     }
263 
264     OHOS::DoSomethingInterestingWithMyAPI(ch, size);
265     free(ch);
266     ch = nullptr;
267     return 0;
268 }
269 
270