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 "appgroupcallbackstub_fuzzer.h"
17
18 #include "accesstoken_kit.h"
19 #include "app_mgr_interface.h"
20
21 #include "app_group_callback_stub.h"
22 #include "iservice_registry.h"
23 #include "system_ability_definition.h"
24
25 namespace OHOS {
26 namespace DeviceUsageStats {
27 constexpr uint32_t U32_AT_SIZE = 4;
28 constexpr uint32_t MAX_CODE = 2; // current max code is 2
29 constexpr uint8_t TWENTYFOUR = 24;
30 constexpr uint8_t SIXTEEN = 16;
31 constexpr uint8_t EIGHT = 8;
32 constexpr uint8_t TWO = 2;
33 constexpr uint8_t THREE = 3;
34 const std::u16string APP_GOUNP_ACTIVE_TOKEN = u"OHOS.DeviceUsageStats.IAppGroupCallback";
35
36 class TestAppGroupChangeCallback : public AppGroupCallbackStub {
37 public:
38 ErrCode OnAppGroupChanged(const AppGroupCallbackInfo &appGroupCallbackInfo) override;
39 };
40
OnAppGroupChanged(const AppGroupCallbackInfo & appGroupCallbackInfo)41 ErrCode TestAppGroupChangeCallback::OnAppGroupChanged(const AppGroupCallbackInfo &appGroupCallbackInfo)
42 {
43 return ERR_OK;
44 }
45
GetU32Data(const char * ptr)46 uint32_t GetU32Data(const char* ptr)
47 {
48 return (ptr[0] << TWENTYFOUR) | (ptr[1] << SIXTEEN) | (ptr[TWO] << EIGHT) | (ptr[THREE]);
49 }
50
DoSomethingInterestingWithMyAPI(const char * data,size_t size)51 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
52 {
53 DelayedSingleton<FuzztestHelper>::GetInstance()->NativeTokenGet();
54 uint32_t code = GetU32Data(data);
55 MessageParcel datas;
56 datas.WriteInterfaceToken(APP_GOUNP_ACTIVE_TOKEN);
57 datas.WriteBuffer(data, size);
58 datas.RewindRead(0);
59 MessageParcel reply;
60 MessageOption option;
61 DelayedSingleton<TestAppGroupChangeCallback>::GetInstance()->OnRemoteRequest(code % MAX_CODE,
62 datas, reply, option);
63 return true;
64 }
65 } // namespace DeviceUsageStats
66 } // namespace OHOS
67
68 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)69 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
70 {
71 /* Run your code on data */
72 if (data == nullptr) {
73 return 0;
74 }
75
76 if (size < OHOS::DeviceUsageStats::U32_AT_SIZE) {
77 return 0;
78 }
79 char* ch = (char *)malloc(size + 1);
80 if (ch == nullptr) {
81 return 0;
82 }
83
84 (void)memset_s(ch, size + 1, 0x00, size + 1);
85 if (memcpy_s(ch, size, data, size) != EOK) {
86 free(ch);
87 ch = nullptr;
88 return 0;
89 }
90
91 OHOS::DeviceUsageStats::DoSomethingInterestingWithMyAPI(ch, size);
92 free(ch);
93 ch = nullptr;
94 return 0;
95 }
96
97