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 "abilityinterfacesappmgrnativechildnotifystub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "native_child_notify_stub.h"
24 #include "native_child_notify_interface.h"
25 #undef protected
26 #undef private
27
28 #include "securec.h"
29 #include "parcel.h"
30 #include "ability_record.h"
31
32 using namespace OHOS::AAFwk;
33 using namespace OHOS::AppExecFwk;
34
35 namespace OHOS {
36 namespace {
37 constexpr int INPUT_ZERO = 0;
38 constexpr int INPUT_ONE = 1;
39 constexpr int INPUT_TWO = 2;
40 constexpr int INPUT_THREE = 3;
41 constexpr size_t FOO_MAX_LEN = 1024;
42 constexpr size_t U32_AT_SIZE = 4;
43 constexpr size_t OFFSET_ZERO = 24;
44 constexpr size_t OFFSET_ONE = 16;
45 constexpr size_t OFFSET_TWO = 8;
46 constexpr uint8_t ENABLE = 2;
47 }
48 const std::u16string NATIVE_CHILD_NOTIFY_TOKEN = u"ohos.appexecfwk.NativeChildNotify";
GetU32Data(const char * ptr)49 uint32_t GetU32Data(const char* ptr)
50 {
51 // convert fuzz input data to an integer
52 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
53 ptr[INPUT_THREE];
54 }
55
56 class NativeChildNotifyStubFUZZ : public NativeChildNotifyStub {
57 public:
NativeChildNotifyStubFUZZ()58 explicit NativeChildNotifyStubFUZZ() {};
~NativeChildNotifyStubFUZZ()59 virtual ~ NativeChildNotifyStubFUZZ() {};
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)60 int OnRemoteRequest(
61 uint32_t code, MessageParcel &data, MessageParcel &reply, MessageOption &option) override{ return 0; };
OnNativeChildStarted(const sptr<IRemoteObject> & nativeChild)62 void OnNativeChildStarted(const sptr<IRemoteObject> &nativeChild) override{};
OnError(int32_t errCode)63 void OnError(int32_t errCode) override{};
64 };
65
GetFuzzAbilityToken()66 sptr<Token> GetFuzzAbilityToken()
67 {
68 sptr<Token> token = nullptr;
69 AbilityRequest abilityRequest;
70 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
71 abilityRequest.abilityInfo.name = "MainAbility";
72 abilityRequest.abilityInfo.type = AbilityType::DATA;
73 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
74 if (abilityRecord) {
75 token = abilityRecord->GetToken();
76 }
77 return token;
78 }
79
DoSomethingInterestingWithMyAPI(const char * data,size_t size)80 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
81 {
82 uint32_t code = static_cast<uint32_t>(INativeChildNotify::IPC_ID_ON_NATIVE_CHILD_STARTED);
83 MessageParcel parcel;
84 parcel.WriteInterfaceToken(NATIVE_CHILD_NOTIFY_TOKEN);
85 parcel.WriteBuffer(data, size);
86 parcel.RewindRead(0);
87 MessageParcel reply;
88 MessageOption option;
89 std::shared_ptr<NativeChildNotifyStubFUZZ> abms = std::make_shared<NativeChildNotifyStubFUZZ>();
90 abms->OnRemoteRequest(code, parcel, reply, option);
91 code = static_cast<uint32_t>(INativeChildNotify::IPC_ID_ON_ERROR);
92 abms->OnRemoteRequest(code, parcel, reply, option);
93 return true;
94 }
95 }
96
97 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)98 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
99 {
100 /* Run your code on data */
101 if (data == nullptr) {
102 std::cout << "invalid data" << std::endl;
103 return 0;
104 }
105
106 /* Validate the length of size */
107 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
108 return 0;
109 }
110
111 char* ch = static_cast<char*>(malloc(size + 1));
112 if (ch == nullptr) {
113 std::cout << "malloc failed." << std::endl;
114 return 0;
115 }
116
117 (void)memset_s(ch, size + 1, 0x00, size + 1);
118 if (memcpy_s(ch, size + 1, data, size) != EOK) {
119 std::cout << "copy failed." << std::endl;
120 free(ch);
121 ch = nullptr;
122 return 0;
123 }
124
125 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
126 free(ch);
127 ch = nullptr;
128 return 0;
129 }
130
131