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 "hstream_depth_data_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
28 namespace OHOS {
29 namespace CameraStandard {
30 static constexpr int32_t MAX_CODE_LEN = 512;
31 static constexpr int32_t MIN_SIZE_NUM = 4;
32 static constexpr int32_t MAX_CODE_NUM = 1;
33 static const uint8_t* RAW_DATA = nullptr;
34 const size_t THRESHOLD = 10;
35 static size_t g_dataSize = 0;
36 static size_t g_pos;
37
38 std::shared_ptr<HStreamDepthDataCallbackFuzz> HStreamDepthDataCallbackStubFuzzer::fuzz_{nullptr};
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
OnRemoteRequest(int32_t code)70 void HStreamDepthDataCallbackStubFuzzer::OnRemoteRequest(int32_t code)
71 {
72 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
73 return;
74 }
75 fuzz_ = std::make_shared<HStreamDepthDataCallbackFuzz>();
76 CHECK_ERROR_RETURN_LOG(!fuzz_, "Create fuzz_ Error");
77 MessageParcel reply;
78 MessageOption option;
79 MessageParcel dataMessageParcel;
80 dataMessageParcel.WriteInterfaceToken(HStreamDepthDataCallbackFuzz::GetDescriptor());
81 dataMessageParcel.WriteBuffer(RAW_DATA + sizeof(uint32_t), g_dataSize - sizeof(uint32_t));
82 dataMessageParcel.RewindRead(0);
83 fuzz_->OnRemoteRequest(code, dataMessageParcel, reply, option);
84 fuzz_->HandleOnDepthDataError(dataMessageParcel);
85 }
86
Test()87 void Test()
88 {
89 auto hstreamDepthDataCallbackStub = std::make_unique<HStreamDepthDataCallbackStubFuzzer>();
90 if (hstreamDepthDataCallbackStub == nullptr) {
91 MEDIA_INFO_LOG("hstreamDepthDataCallbackStub is null");
92 return;
93 }
94 for (uint32_t i = 0; i <= MAX_CODE_NUM; i++) {
95 hstreamDepthDataCallbackStub->OnRemoteRequest(i);
96 }
97 }
98
99 typedef void (*TestFuncs[1])();
100
101 TestFuncs g_testFuncs = {
102 Test,
103 };
104
FuzzTest(const uint8_t * rawData,size_t size)105 bool FuzzTest(const uint8_t* rawData, size_t size)
106 {
107 // initialize data
108 RAW_DATA = rawData;
109 g_dataSize = size;
110 g_pos = 0;
111
112 uint32_t code = GetData<uint32_t>();
113 uint32_t len = GetArrLength(g_testFuncs);
114 if (len > 0) {
115 g_testFuncs[code % len]();
116 } else {
117 MEDIA_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
118 }
119
120 return true;
121 }
122 } // namespace CameraStandard
123 } // namespace OHOS
124
125 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)126 extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size)
127 {
128 if (size < OHOS::CameraStandard::THRESHOLD) {
129 return 0;
130 }
131
132 OHOS::CameraStandard::FuzzTest(data, size);
133 return 0;
134 }