1 /*
2 * Copyright (c) 2023 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 "bgtaskonremoterequest_fuzzer.h"
17 #include "securec.h"
18
19 #include "background_task_mgr_service.h"
20 #include "ibackground_task_mgr_ipc_interface_code.h"
21
22 namespace OHOS {
23 namespace BackgroundTaskMgr {
24 const std::string BGTASK_SERVICE_NAME = "BgtaskMgrService";
25 constexpr int32_t U32_AT_SIZE = 4;
26 constexpr int32_t MAX_CODE = 15;
27 constexpr uint8_t TWENTYFOUR = 24;
28 constexpr uint8_t SIXTEEN = 16;
29 constexpr uint8_t EIGHT = 8;
30 constexpr int32_t THREE = 3;
31 constexpr int32_t TWO = 2;
32 bool g_isOnstarted = false;
33 const std::u16string BACKGROUND_TASK_MGR_STUB_TOKEN = u"ohos.resourceschedule.IBackgroundTaskMgr";
34
GetU32Data(const char * ptr)35 uint32_t GetU32Data(const char* ptr)
36 {
37 return (ptr[0] << TWENTYFOUR) | (ptr[1] << SIXTEEN) | (ptr[TWO] << EIGHT) | (ptr[THREE]);
38 }
39
DoSomethingInterestingWithMyAPI(const char * data,size_t size)40 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
41 {
42 uint32_t code = GetU32Data(data);
43 MessageParcel datas;
44 datas.WriteInterfaceToken(BACKGROUND_TASK_MGR_STUB_TOKEN);
45 datas.WriteBuffer(data, size);
46 datas.RewindRead(0);
47 MessageParcel reply;
48 MessageOption option;
49 if (!g_isOnstarted) {
50 std::shared_ptr<AppExecFwk::EventRunner> runner_ {nullptr};
51 runner_ = AppExecFwk::EventRunner::Create(BGTASK_SERVICE_NAME);
52 DelayedSingleton<BgEfficiencyResourcesMgr>::GetInstance()->Init(runner_);
53 BgContinuousTaskMgr::GetInstance()->Init(runner_);
54 DelayedSingleton<BgTransientTaskMgr>::GetInstance()->Init(runner_);
55 g_isOnstarted = true;
56 }
57 DelayedSingleton<BackgroundTaskMgrService>::GetInstance()->OnRemoteRequest(
58 code % MAX_CODE, datas, reply, option);
59 return true;
60 }
61 } // BackgroundTaskMgr
62 } // OHOS
63
64 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)65 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
66 {
67 /* Run your code on data */
68 if (data == nullptr) {
69 return 0;
70 }
71
72 if (size < OHOS::BackgroundTaskMgr::U32_AT_SIZE) {
73 return 0;
74 }
75
76 char* ch = static_cast<char *>(malloc(size + 1));
77 if (ch == nullptr) {
78 return 0;
79 }
80
81 (void)memset_s(ch, size + 1, 0x00, size + 1);
82 if (memcpy_s(ch, size + 1, data, size) != EOK) {
83 free(ch);
84 ch = nullptr;
85 return 0;
86 }
87
88 OHOS::BackgroundTaskMgr::DoSomethingInterestingWithMyAPI(ch, size);
89 free(ch);
90 ch = nullptr;
91 return 0;
92 }
93