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 "hcamera_service_callback_stub_fuzzer.h"
17 #include "camera_log.h"
18 #include "hstream_capture.h"
19 #include "iservice_registry.h"
20 #include "message_parcel.h"
21 #include "accesstoken_kit.h"
22 #include "camera_metadata_info.h"
23 #include "metadata_utils.h"
24 #include "iconsumer_surface.h"
25 #include "camera_service_ipc_interface_code.h"
26 #include "securec.h"
27 #include <memory>
28
29 namespace OHOS {
30 namespace CameraStandard {
31
32 static constexpr int32_t MAX_CODE_LEN = 512;
33 static constexpr int32_t MIN_SIZE_NUM = 4;
34 static constexpr int32_t MAX_CODE_NUM = 1;
35 static const uint8_t* RAW_DATA = nullptr;
36 const size_t THRESHOLD = 10;
37 static size_t g_dataSize = 0;
38 static size_t g_pos;
39
40 /*
41 * describe: get data from outside untrusted data(g_data) which size is according to sizeof(T)
42 * tips: only support basic type
43 */
44 template<class T>
GetData()45 T GetData()
46 {
47 T object {};
48 size_t objectSize = sizeof(object);
49 if (RAW_DATA == nullptr || objectSize > g_dataSize - g_pos) {
50 return object;
51 }
52 errno_t ret = memcpy_s(&object, objectSize, RAW_DATA + g_pos, objectSize);
53 if (ret != EOK) {
54 return {};
55 }
56 g_pos += objectSize;
57 return object;
58 }
59
60 template<class T>
GetArrLength(T & arr)61 uint32_t GetArrLength(T& arr)
62 {
63 if (arr == nullptr) {
64 MEDIA_INFO_LOG("%{public}s: The array length is equal to 0", __func__);
65 return 0;
66 }
67 return sizeof(arr) / sizeof(arr[0]);
68 }
69
HCameraServiceCallbackStubFuzzTest(int32_t code)70 void HCameraServiceCallbackStubFuzzer::HCameraServiceCallbackStubFuzzTest(int32_t code)
71 {
72 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
73 return;
74 }
75 std::shared_ptr<HCameraServiceCallbackStubFuzz> fuzz = std::make_shared<HCameraServiceCallbackStubFuzz>();
76 if (fuzz == nullptr) {
77 return;
78 }
79 MessageParcel reply;
80 MessageOption option;
81 MessageParcel dataMessageParcel;
82 dataMessageParcel.WriteInterfaceToken(HCameraServiceCallbackStubFuzz::GetDescriptor());
83 dataMessageParcel.WriteBuffer(RAW_DATA + sizeof(uint32_t), g_dataSize - sizeof(uint32_t));
84 dataMessageParcel.RewindRead(0);
85 fuzz->OnRemoteRequest(code, dataMessageParcel, reply, option);
86 fuzz->HandleOnCameraStatusChanged(dataMessageParcel);
87 fuzz->HandleOnFlashlightStatusChanged(dataMessageParcel);
88 }
89
HCameraMuteServiceCallbackStuFuzzTest(int32_t code)90 void HCameraServiceCallbackStubFuzzer::HCameraMuteServiceCallbackStuFuzzTest(int32_t code)
91 {
92 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
93 return;
94 }
95 std::shared_ptr<HCameraMuteServiceCallbackStubFuzz> fuzz =
96 std::make_shared<HCameraMuteServiceCallbackStubFuzz>();
97 if (fuzz == nullptr) {
98 return;
99 }
100 MessageParcel reply;
101 MessageOption option;
102 MessageParcel dataMessageParcel;
103 dataMessageParcel.WriteInterfaceToken(HCameraMuteServiceCallbackStubFuzz::GetDescriptor());
104 dataMessageParcel.WriteBuffer(RAW_DATA + sizeof(uint32_t), g_dataSize - sizeof(uint32_t));
105 dataMessageParcel.RewindRead(0);
106 fuzz->OnRemoteRequest(code, dataMessageParcel, reply, option);
107 fuzz->HandleOnCameraMute(dataMessageParcel);
108 }
109
HTorchServiceCallbackStubFuzzTest(int32_t code)110 void HCameraServiceCallbackStubFuzzer::HTorchServiceCallbackStubFuzzTest(int32_t code)
111 {
112 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
113 return;
114 }
115 std::shared_ptr<HTorchServiceCallbackStubFuzz> fuzz =
116 std::make_shared<HTorchServiceCallbackStubFuzz>();
117 if (fuzz == nullptr) {
118 return;
119 }
120 MessageParcel reply;
121 MessageOption option;
122 MessageParcel dataMessageParcel;
123 dataMessageParcel.WriteInterfaceToken(HTorchServiceCallbackStubFuzz::GetDescriptor());
124 dataMessageParcel.WriteBuffer(RAW_DATA + sizeof(uint32_t), g_dataSize - sizeof(uint32_t));
125 dataMessageParcel.RewindRead(0);
126 fuzz->OnRemoteRequest(code, dataMessageParcel, reply, option);
127 fuzz->HandleOnTorchStatusChange(dataMessageParcel);
128 }
129
HFoldServiceCallbackStubFuzzTest(int32_t code)130 void HCameraServiceCallbackStubFuzzer::HFoldServiceCallbackStubFuzzTest(int32_t code)
131 {
132 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
133 return;
134 }
135 std::shared_ptr<HFoldServiceCallbackStubFuzz> fuzz =
136 std::make_shared<HFoldServiceCallbackStubFuzz>();
137 if (fuzz == nullptr) {
138 return;
139 }
140 MessageParcel reply;
141 MessageOption option;
142 MessageParcel dataMessageParcel;
143 dataMessageParcel.WriteInterfaceToken(HFoldServiceCallbackStubFuzz::GetDescriptor());
144 dataMessageParcel.WriteBuffer(RAW_DATA + sizeof(uint32_t), g_dataSize - sizeof(uint32_t));
145 dataMessageParcel.RewindRead(0);
146 fuzz->OnRemoteRequest(code, dataMessageParcel, reply, option);
147 fuzz->HandleOnFoldStatusChanged(dataMessageParcel);
148 }
149
Test()150 void Test()
151 {
152 auto hCameraServiceCallbackStub = std::make_unique<HCameraServiceCallbackStubFuzzer>();
153 if (hCameraServiceCallbackStub == nullptr) {
154 MEDIA_INFO_LOG("hCameraServiceCallbackStub is null");
155 return;
156 }
157 for (uint32_t i = 0; i <= MAX_CODE_NUM; i++) {
158 hCameraServiceCallbackStub->HCameraServiceCallbackStubFuzzTest(i);
159 }
160 for (uint32_t i = 0; i <= MAX_CODE_NUM; i++) {
161 hCameraServiceCallbackStub->HCameraMuteServiceCallbackStuFuzzTest(i);
162 }
163 for (uint32_t i = 0; i <= MAX_CODE_NUM; i++) {
164 hCameraServiceCallbackStub->HTorchServiceCallbackStubFuzzTest(i);
165 }
166 for (uint32_t i = 0; i <= MAX_CODE_NUM; i++) {
167 hCameraServiceCallbackStub->HFoldServiceCallbackStubFuzzTest(i);
168 }
169 }
170
171 typedef void (*TestFuncs[1])();
172
173 TestFuncs g_testFuncs = {
174 Test,
175 };
176
FuzzTest(const uint8_t * rawData,size_t size)177 bool FuzzTest(const uint8_t* rawData, size_t size)
178 {
179 // initialize data
180 RAW_DATA = rawData;
181 g_dataSize = size;
182 g_pos = 0;
183
184 uint32_t code = GetData<uint32_t>();
185 uint32_t len = GetArrLength(g_testFuncs);
186 if (len > 0) {
187 g_testFuncs[code % len]();
188 } else {
189 MEDIA_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
190 }
191
192 return true;
193 }
194 } // namespace CameraStandard
195 } // namespace OHOS
196
197 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)198 extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size)
199 {
200 if (size < OHOS::CameraStandard::THRESHOLD) {
201 return 0;
202 }
203
204 OHOS::CameraStandard::FuzzTest(data, size);
205 return 0;
206 }