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 "mpeg_manager_fuzzer.h"
17 #include "message_parcel.h"
18 #include "ipc_file_descriptor.h"
19 #include "foundation/multimedia/camera_framework/common/utils/camera_log.h"
20 #include "securec.h"
21
22 namespace OHOS {
23 namespace CameraStandard {
24 using namespace DeferredProcessing;
25 static constexpr int32_t MAX_CODE_LEN = 512;
26 static constexpr int32_t MIN_SIZE_NUM = 4;
27 static const uint8_t* RAW_DATA = nullptr;
28 const size_t THRESHOLD = 10;
29 static size_t g_dataSize = 0;
30 static size_t g_pos;
31
32 std::shared_ptr<MpegManager> MpegManagerFuzzer::fuzz_{nullptr};
33
34 /*
35 * describe: get data from outside untrusted data(g_data) which size is according to sizeof(T)
36 * tips: only support basic type
37 */
38 template<class T>
GetData()39 T GetData()
40 {
41 T object {};
42 size_t objectSize = sizeof(object);
43 if (RAW_DATA == nullptr || objectSize > g_dataSize - g_pos) {
44 return object;
45 }
46 errno_t ret = memcpy_s(&object, objectSize, RAW_DATA + g_pos, objectSize);
47 if (ret != EOK) {
48 return {};
49 }
50 g_pos += objectSize;
51 return object;
52 }
53
54 template<class T>
GetArrLength(T & arr)55 uint32_t GetArrLength(T& arr)
56 {
57 if (arr == nullptr) {
58 MEDIA_INFO_LOG("%{public}s: The array length is equal to 0", __func__);
59 return 0;
60 }
61 return sizeof(arr) / sizeof(arr[0]);
62 }
63
MpegManagerFuzzTest()64 void MpegManagerFuzzer::MpegManagerFuzzTest()
65 {
66 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
67 return;
68 }
69 fuzz_ = std::make_shared<MpegManager>();
70 CHECK_ERROR_RETURN_LOG(!fuzz_, "Create fuzz_ Error");
71 MediaResult result1 = MediaResult::FAIL;
72 MediaResult result2 = MediaResult::PAUSE;
73 fuzz_->UnInit(result1);
74 fuzz_->UnInit(result2);
75 fuzz_->GetSurface();
76 fuzz_->GetMakerSurface();
77 fuzz_->GetProcessTimeStamp();
78 fuzz_->GetResultFd();
79 fuzz_->InitVideoCodec();
80 fuzz_->UnInitVideoCodec();
81 fuzz_->InitVideoMakerSurface();
82 fuzz_->UnInitVideoMaker();
83 std::vector<uint8_t> memoryFlags = {
84 static_cast<uint8_t>(MemoryFlag::MEMORY_READ_ONLY),
85 static_cast<uint8_t>(MemoryFlag::MEMORY_WRITE_ONLY),
86 static_cast<uint8_t>(MemoryFlag::MEMORY_READ_WRITE)
87 };
88 uint8_t randomIndex = GetData<uint8_t>() % memoryFlags.size();
89 MemoryFlag selectedFlag = static_cast<MemoryFlag>(memoryFlags[randomIndex]);
90 std::shared_ptr<AVAllocator> avAllocator = AVAllocatorFactory::CreateSharedAllocator(selectedFlag);
91 fuzz_->OnMakerBufferAvailable();
92 int64_t timestamp = GetData<int64_t>();
93 fuzz_->AcquireMakerBuffer(timestamp);
94 int flags = 1;
95 uint8_t randomNum = GetData<uint8_t>();
96 std::vector<std::string> testStrings = {"test1", "test2"};
97 std::string requestId(testStrings[randomNum % testStrings.size()]);
98 fuzz_->GetFileFd(requestId, flags, "_vid_temp");
99 fuzz_->GetFileFd(requestId, flags, "_vid");
100 }
101
Test()102 void Test()
103 {
104 auto mpegManager = std::make_unique<MpegManagerFuzzer>();
105 if (mpegManager == nullptr) {
106 MEDIA_INFO_LOG("mpegManager is null");
107 return;
108 }
109 mpegManager->MpegManagerFuzzTest();
110 }
111
112 typedef void (*TestFuncs[1])();
113
114 TestFuncs g_testFuncs = {
115 Test,
116 };
117
FuzzTest(const uint8_t * rawData,size_t size)118 bool FuzzTest(const uint8_t* rawData, size_t size)
119 {
120 // initialize data
121 RAW_DATA = rawData;
122 g_dataSize = size;
123 g_pos = 0;
124
125 uint32_t code = GetData<uint32_t>();
126 uint32_t len = GetArrLength(g_testFuncs);
127 if (len > 0) {
128 g_testFuncs[code % len]();
129 } else {
130 MEDIA_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
131 }
132
133 return true;
134 }
135 } // namespace CameraStandard
136 } // namespace OHOS
137
138 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)139 extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size)
140 {
141 if (size < OHOS::CameraStandard::THRESHOLD) {
142 return 0;
143 }
144
145 OHOS::CameraStandard::FuzzTest(data, size);
146 return 0;
147 }