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 "appforegroundstateobserverproxy_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "app_foreground_state_observer_proxy.h"
23 #undef private
24
25 #include "ability_record.h"
26 #include "parcel.h"
27 #include "securec.h"
28 #include "want.h"
29
30 using namespace OHOS::AAFwk;
31 using namespace OHOS::AppExecFwk;
32
33 namespace OHOS {
34 namespace {
35 constexpr int INPUT_ZERO = 0;
36 constexpr int INPUT_ONE = 1;
37 constexpr int INPUT_THREE = 3;
38 constexpr size_t FOO_MAX_LEN = 1024;
39 constexpr size_t U32_AT_SIZE = 4;
40 constexpr uint8_t ENABLE = 2;
41 constexpr size_t OFFSET_ZERO = 24;
42 constexpr size_t OFFSET_ONE = 16;
43 constexpr size_t OFFSET_TWO = 8;
44 }
45
46 const std::u16string APPMGR_INTERFACE_TOKEN = u"ohos.aafwk.AppManager";
GetU32Data(const char* ptr)47 uint32_t GetU32Data(const char* ptr)
48 {
49 // convert fuzz input data to an integer
50 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
51 ptr[INPUT_THREE];
52 }
53
DoSomethingInterestingWithMyAPI(const char* data, size_t size)54 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
55 {
56 sptr<IRemoteObject> impl;
57 auto appForegroundStateObserverProxy = std::make_shared<AppForegroundStateObserverProxy>(impl);
58 AppStateData appStateData;
59 appForegroundStateObserverProxy->OnAppStateChanged(appStateData);
60 MessageParcel dataParcel;
61 dataParcel.WriteInterfaceToken(APPMGR_INTERFACE_TOKEN);
62 dataParcel.WriteBuffer(data, size);
63 dataParcel.RewindRead(0);
64 appForegroundStateObserverProxy->WriteInterfaceToken(dataParcel);
65
66 return true;
67 }
68 }
69
70 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)71 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
72 {
73 /* Run your code on data */
74 if (data == nullptr) {
75 std::cout << "invalid data" << std::endl;
76 return 0;
77 }
78
79 /* Validate the length of size */
80 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
81 return 0;
82 }
83
84 char* ch = (char*)malloc(size + 1);
85 if (ch == nullptr) {
86 std::cout << "malloc failed." << std::endl;
87 return 0;
88 }
89
90 (void)memset_s(ch, size + 1, 0x00, size + 1);
91 if (memcpy_s(ch, size + 1, data, size) != EOK) {
92 std::cout << "copy failed." << std::endl;
93 free(ch);
94 ch = nullptr;
95 return 0;
96 }
97
98 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103