1 /*
2 * Copyright (c) 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 * 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
17 #include "screenlockmanager_fuzzer.h"
18
19 #include <cstddef>
20 #include <cstdint>
21
22 #include "message_parcel.h"
23 #include "screenlock_app_manager.h"
24 #include "screenlock_callback.h"
25 #include "screenlock_manager.h"
26 #include "screenlock_manager_interface.h"
27 #include "screenlock_system_ability.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 RANDNUM_ZERO = 0;
35 constexpr size_t RANDNUM_ONE = 1;
36 constexpr size_t RANDNUM_TWO = 2;
37 constexpr size_t RANDNUM_THREE = 3;
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 if (code == RANDNUM_ZERO) {
52 return ScreenLockManager::GetInstance()->IsScreenLocked();
53 }
54 if (code == RANDNUM_ONE) {
55 return ScreenLockManager::GetInstance()->GetSecure();
56 }
57 if (code == RANDNUM_TWO) {
58 sptr<ScreenLockSystemAbilityInterface> listener_ = new ScreenLockSystemAbilityStub();
59 return ScreenLockManager::GetInstance()->RequestUnlock(listener_);
60 }
61 if (code == RANDNUM_THREE) {
62 sptr<ScreenLockSystemAbilityInterface> listener_ = new ScreenLockSystemAbilityStub();
63 return ScreenLockManager::GetInstance()->RequestLock(listener_);
64 }
65 return true;
66 }
67
FuzzScreenlockAppManager(const uint8_t * rawData,size_t size)68 bool FuzzScreenlockAppManager(const uint8_t *rawData, size_t size)
69 {
70 uint32_t code = ConvertToUint32(rawData);
71 rawData = rawData + OFFSET;
72 size = size - OFFSET;
73 if (code == RANDNUM_ZERO) {
74 sptr<ScreenLockSystemAbilityInterface> listener_ = new ScreenLockSystemAbilityStub();
75 return ScreenLockAppManager::GetInstance()->OnSystemEvent(listener_);
76 }
77 if (code == RANDNUM_ONE) {
78 int param = 0;
79 std::string event(reinterpret_cast<const char *>(rawData), size);
80 return ScreenLockAppManager::GetInstance()->SendScreenLockEvent(event, param);
81 }
82 return true;
83 }
84 } // namespace OHOS
85
86 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)87 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
88 {
89 if (size < OHOS::THRESHOLD) {
90 return 0;
91 }
92
93 /* Run your code on data */
94 OHOS::FuzzScreenlockManager(data, size);
95 OHOS::FuzzScreenlockAppManager(data, size);
96 return 0;
97 }