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_proxy_fuzzer.h"
17 #include "camera_log.h"
18 #include "iconsumer_surface.h"
19 #include "securec.h"
20
21 namespace OHOS {
22 namespace CameraStandard {
23 static constexpr int32_t MAX_CODE_LEN = 512;
24 static constexpr int32_t MIN_SIZE_NUM = 4;
25 static const uint8_t* RAW_DATA = nullptr;
26 const size_t THRESHOLD = 10;
27 static size_t g_dataSize = 0;
28 static size_t g_pos;
29 std::shared_ptr<HStreamDepthDataProxy> HStreamDepthDataProxyFuzzer::fuzz_{nullptr};
30
31 /*
32 * describe: get data from outside untrusted data(g_data) which size is according to sizeof(T)
33 * tips: only support basic type
34 */
35 template<class T>
GetData()36 T GetData()
37 {
38 T object {};
39 size_t objectSize = sizeof(object);
40 if (RAW_DATA == nullptr || objectSize > g_dataSize - g_pos) {
41 return object;
42 }
43 errno_t ret = memcpy_s(&object, objectSize, RAW_DATA + g_pos, objectSize);
44 if (ret != EOK) {
45 return {};
46 }
47 g_pos += objectSize;
48 return object;
49 }
50
51 template<class T>
GetArrLength(T & arr)52 uint32_t GetArrLength(T& arr)
53 {
54 if (arr == nullptr) {
55 MEDIA_INFO_LOG("%{public}s: The array length is equal to 0", __func__);
56 return 0;
57 }
58 return sizeof(arr) / sizeof(arr[0]);
59 }
60
HStreamDepthDataProxyFuzzTest()61 void HStreamDepthDataProxyFuzzer::HStreamDepthDataProxyFuzzTest()
62 {
63 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
64 return;
65 }
66 auto mgr = OHOS::SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
67 if (mgr == nullptr) {
68 return;
69 }
70 auto object = mgr->GetSystemAbility(CAMERA_SERVICE_ID);
71 if (object == nullptr) {
72 return;
73 }
74 fuzz_ = std::make_shared<HStreamDepthDataProxy>(object);
75 CHECK_ERROR_RETURN_LOG(!fuzz_, "Create fuzz_ Error");
76 fuzz_->Start();
77 fuzz_->Stop();
78 fuzz_->Release();
79 auto dataAccuracy = GetData<int32_t>();
80 fuzz_->SetDataAccuracy(dataAccuracy);
81 }
82
Test()83 void Test()
84 {
85 auto hstreamDepthDataProxy = std::make_unique<HStreamDepthDataProxyFuzzer>();
86 if (hstreamDepthDataProxy == nullptr) {
87 MEDIA_INFO_LOG("hstreamDepthDataProxy is null");
88 return;
89 }
90 hstreamDepthDataProxy->HStreamDepthDataProxyFuzzTest();
91 }
92
93 typedef void (*TestFuncs[1])();
94
95 TestFuncs g_testFuncs = {
96 Test,
97 };
98
FuzzTest(const uint8_t * rawData,size_t size)99 bool FuzzTest(const uint8_t* rawData, size_t size)
100 {
101 // initialize data
102 RAW_DATA = rawData;
103 g_dataSize = size;
104 g_pos = 0;
105
106 uint32_t code = GetData<uint32_t>();
107 uint32_t len = GetArrLength(g_testFuncs);
108 if (len > 0) {
109 g_testFuncs[code % len]();
110 } else {
111 MEDIA_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
112 }
113
114 return true;
115 }
116 } // namespace CameraStandard
117 } // namespace OHOS
118
119 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)120 extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size)
121 {
122 if (size < OHOS::CameraStandard::THRESHOLD) {
123 return 0;
124 }
125
126 OHOS::CameraStandard::FuzzTest(data, size);
127 return 0;
128 }