1  /*
2   * Copyright (c) 2021-2022 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   * miscservices under the License is miscservices 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 "screenlockmanager_fuzzer.h"
17  
18  #include <cstddef>
19  #include <cstdint>
20  
21  #include "message_parcel.h"
22  #include "screenlock_app_manager.h"
23  #include "screenlock_callback.h"
24  #include "screenlock_manager.h"
25  #include "screenlock_manager_interface.h"
26  #include "screenlock_system_ability.h"
27  #include "screenlock_system_ability_callback.h"
28  
29  using namespace OHOS::ScreenLock;
30  
31  namespace OHOS {
32  constexpr size_t THRESHOLD = 10;
33  constexpr int32_t OFFSET = 4;
34  constexpr size_t LENGTH = 1;
35  constexpr size_t RANDNUM_ZERO = 0;
36  constexpr size_t RANDNUM_ONE = 1;
37  constexpr size_t RANDNUM_TWO = 2;
38  
ConvertToUint32(const uint8_t * ptr)39  uint32_t ConvertToUint32(const uint8_t *ptr)
40  {
41      if (ptr == nullptr) {
42          return 0;
43      }
44      uint32_t bigvar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
45      return bigvar;
46  }
47  
FuzzScreenlockManager(const uint8_t * rawData,size_t size)48  bool FuzzScreenlockManager(const uint8_t *rawData, size_t size)
49  {
50      uint32_t code = ConvertToUint32(rawData);
51      EventListener eventListener;
52      if (code == RANDNUM_ZERO) {
53          return ScreenLockManager::GetInstance()->IsScreenLocked();
54      }
55      if (code == RANDNUM_ONE) {
56          return ScreenLockManager::GetInstance()->GetSecure();
57      }
58      if (code == RANDNUM_TWO) {
59          sptr<ScreenlockCallback> listener_ = new ScreenlockCallback(eventListener);
60          int32_t ret = ScreenLockManager::GetInstance()->Lock(listener_);
61          return ret == E_SCREENLOCK_OK;
62      }
63      return true;
64  }
65  
UnlockFuzzTest(const uint8_t * rawData,size_t size)66  bool UnlockFuzzTest(const uint8_t *rawData, size_t size)
67  {
68      EventListener eventListener;
69      sptr<ScreenlockCallback> listener_ = new ScreenlockCallback(eventListener);
70      if (size < LENGTH) {
71          return true;
72      }
73      int32_t ret = ScreenLockManager::GetInstance()->Unlock(static_cast<Action>(rawData[0] % 3), listener_);
74      return ret == E_SCREENLOCK_OK;
75  }
76  
IsLockedFuzzTest(const uint8_t * rawData,size_t size)77  bool IsLockedFuzzTest(const uint8_t *rawData, size_t size)
78  {
79      if (size < LENGTH) {
80          return true;
81      }
82      bool isLocked = static_cast<bool>(rawData[0] % 2);
83      int32_t ret = ScreenLockManager::GetInstance()->IsLocked(isLocked);
84      return ret == E_SCREENLOCK_OK;
85  }
86  
FuzzScreenlockAppManager(const uint8_t * rawData,size_t size)87  bool FuzzScreenlockAppManager(const uint8_t *rawData, size_t size)
88  {
89      uint32_t code = ConvertToUint32(rawData);
90      rawData = rawData + OFFSET;
91      size = size - OFFSET;
92      EventListener eventListener;
93      if (code == RANDNUM_ZERO) {
94          sptr<ScreenlockSystemAbilityCallback> listener_ = new ScreenlockSystemAbilityCallback(eventListener);
95          int32_t ret = ScreenLockAppManager::GetInstance()->OnSystemEvent(listener_);
96          return ret == E_SCREENLOCK_OK;
97      }
98      if (code == RANDNUM_ONE) {
99          int param = 0;
100          std::string event(reinterpret_cast<const char *>(rawData), size);
101          int32_t ret = ScreenLockAppManager::GetInstance()->SendScreenLockEvent(event, param);
102          return ret == E_SCREENLOCK_OK;
103      }
104      return true;
105  }
106  
FuzzScreenlockIsDisabled(const uint8_t * rawData,size_t size)107  bool FuzzScreenlockIsDisabled(const uint8_t *rawData, size_t size)
108  {
109      if (size < LENGTH) {
110          return true;
111      }
112      int32_t userId = 100;
113      bool isDisabled = static_cast<bool>(rawData[0] % 2);
114      int32_t ret = ScreenLockAppManager::GetInstance()->IsScreenLockDisabled(userId, isDisabled);
115      return ret == E_SCREENLOCK_OK;
116  }
117  
FuzzScreenlockSetDisabled(const uint8_t * rawData,size_t size)118  bool FuzzScreenlockSetDisabled(const uint8_t *rawData, size_t size)
119  {
120      if (size < LENGTH) {
121          return true;
122      }
123      int32_t userId = 100;
124      bool isDisabled = static_cast<bool>(rawData[0] % 2);
125      int32_t ret = ScreenLockAppManager::GetInstance()->SetScreenLockDisabled(isDisabled, userId);
126      return ret == E_SCREENLOCK_OK;
127  }
128  
FuzzScreenlockSetAuthState(const uint8_t * rawData,size_t size)129  bool FuzzScreenlockSetAuthState(const uint8_t *rawData, size_t size)
130  {
131      if (size < LENGTH) {
132          return true;
133      }
134      int32_t userId = 100;
135      int32_t authState = 2;
136      std::string authToken = "test";
137      int32_t ret = ScreenLockAppManager::GetInstance()->SetScreenLockAuthState(authState, userId, authToken);
138      return ret == E_SCREENLOCK_OK;
139  }
140  
FuzzScreenlockGetAuthState(const uint8_t * rawData,size_t size)141  bool FuzzScreenlockGetAuthState(const uint8_t *rawData, size_t size)
142  {
143      if (size < LENGTH) {
144          return true;
145      }
146      int32_t userId = 100;
147      int32_t authState = 2;
148      int32_t ret = ScreenLockAppManager::GetInstance()->GetScreenLockAuthState(userId, authState);
149      return ret == E_SCREENLOCK_OK;
150  }
151  
FuzzScreenlockRequestStrongAuth(const uint8_t * rawData,size_t size)152  bool FuzzScreenlockRequestStrongAuth(const uint8_t *rawData, size_t size)
153  {
154      if (size < LENGTH) {
155          return true;
156      }
157      int32_t userId = 100;
158      int reasonFlag = 1;
159      int32_t ret = ScreenLockAppManager::GetInstance()->RequestStrongAuth(reasonFlag, userId);
160      return ret == E_SCREENLOCK_OK;
161  }
162  
FuzzScreenlockGetStrongAuth(const uint8_t * rawData,size_t size)163  bool FuzzScreenlockGetStrongAuth(const uint8_t *rawData, size_t size)
164  {
165      if (size < LENGTH) {
166          return true;
167      }
168      int32_t userId = 100;
169      int reasonFlag = 1;
170      int32_t ret = ScreenLockAppManager::GetInstance()->GetStrongAuth(userId, reasonFlag);
171      return ret == E_SCREENLOCK_OK;
172  }
173  
174  } // namespace OHOS
175  
176  /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)177  extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
178  {
179      if (size < OHOS::THRESHOLD) {
180          return 0;
181      }
182  
183      /* Run your code on data */
184      OHOS::FuzzScreenlockManager(data, size);
185      OHOS::UnlockFuzzTest(data, size);
186      OHOS::IsLockedFuzzTest(data, size);
187      OHOS::FuzzScreenlockAppManager(data, size);
188      OHOS::FuzzScreenlockIsDisabled(data, size);
189      OHOS::FuzzScreenlockSetDisabled(data, size);
190      OHOS::FuzzScreenlockSetAuthState(data, size);
191      OHOS::FuzzScreenlockGetAuthState(data, size);
192      OHOS::FuzzScreenlockRequestStrongAuth(data, size);
193      OHOS::FuzzScreenlockGetStrongAuth(data, size);
194      return 0;
195  }