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 "video_encoder_fuzzer.h"
17 #include "message_parcel.h"
18 #include "securec.h"
19 #include "camera_log.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<VideoEncoder> VideoEncoderFuzzer::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
VideoEncoderFuzzTest()61 void VideoEncoderFuzzer::VideoEncoderFuzzTest()
62 {
63 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
64 return;
65 }
66 fuzz_ = std::make_shared<VideoEncoder>();
67 CHECK_ERROR_RETURN_LOG(!fuzz_, "Create fuzz_ Error");
68 uint8_t randomNum = GetData<uint8_t>();
69 std::vector<std::string> testStrings = {"test1", "test2"};
70 std::string codecMime(testStrings[randomNum % testStrings.size()]);
71 fuzz_->Create(codecMime);
72 fuzz_->Config();
73 fuzz_->Start();
74 fuzz_->GetSurface();
75 int64_t timestamp = GetData<int64_t>();
76 GraphicTransformType type_ = GRAPHIC_ROTATE_90;
77 sptr<SurfaceBuffer> videoBuffer = SurfaceBuffer::Create();
78 sptr<FrameRecord> frameRecord =
79 new(std::nothrow) FrameRecord(videoBuffer, timestamp, type_);
80 fuzz_->ReleaseSurfaceBuffer(frameRecord);
81 fuzz_->NotifyEndOfStream();
82 uint32_t bufferIndex = GetData<uint32_t>();
83 fuzz_->FreeOutputData(bufferIndex);
84 fuzz_->Stop();
85 }
86
Test()87 void Test()
88 {
89 auto videoEncoder = std::make_unique<VideoEncoderFuzzer>();
90 if (videoEncoder == nullptr) {
91 MEDIA_INFO_LOG("videoEncoder is null");
92 return;
93 }
94 videoEncoder->VideoEncoderFuzzTest();
95 }
96
97 typedef void (*TestFuncs[1])();
98
99 TestFuncs g_testFuncs = {
100 Test,
101 };
102
FuzzTest(const uint8_t * rawData,size_t size)103 bool FuzzTest(const uint8_t* rawData, size_t size)
104 {
105 // initialize data
106 RAW_DATA = rawData;
107 g_dataSize = size;
108 g_pos = 0;
109
110 uint32_t code = GetData<uint32_t>();
111 uint32_t len = GetArrLength(g_testFuncs);
112 if (len > 0) {
113 g_testFuncs[code % len]();
114 } else {
115 MEDIA_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
116 }
117
118 return true;
119 }
120 } // namespace CameraStandard
121 } // namespace OHOS
122
123 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)124 extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size)
125 {
126 if (size < OHOS::CameraStandard::THRESHOLD) {
127 return 0;
128 }
129
130 OHOS::CameraStandard::FuzzTest(data, size);
131 return 0;
132 }