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 "dps_video_report_fuzzer.h"
17 #include "camera_log.h"
18 #include "message_parcel.h"
19 #include "securec.h"
20
21 namespace OHOS {
22 namespace CameraStandard {
23 using namespace DeferredProcessing;
24 static constexpr int32_t MAX_CODE_LEN = 512;
25 static constexpr int32_t MIN_SIZE_NUM = 4;
26 static const uint8_t* RAW_DATA = nullptr;
27 const size_t THRESHOLD = 10;
28 static size_t g_dataSize = 0;
29 static size_t g_pos;
30
31 std::shared_ptr<DfxVideoReport> DfxVideoReportFuzzer::fuzz_{nullptr};
32
33 /*
34 * describe: get data from outside untrusted data(g_data) which size is according to sizeof(T)
35 * tips: only support basic type
36 */
37 template<class T>
GetData()38 T GetData()
39 {
40 T object {};
41 size_t objectSize = sizeof(object);
42 if (RAW_DATA == nullptr || objectSize > g_dataSize - g_pos) {
43 return object;
44 }
45 errno_t ret = memcpy_s(&object, objectSize, RAW_DATA + g_pos, objectSize);
46 if (ret != EOK) {
47 return {};
48 }
49 g_pos += objectSize;
50 return object;
51 }
52
53 template<class T>
GetArrLength(T & arr)54 uint32_t GetArrLength(T& arr)
55 {
56 if (arr == nullptr) {
57 MEDIA_INFO_LOG("%{public}s: The array length is equal to 0", __func__);
58 return 0;
59 }
60 return sizeof(arr) / sizeof(arr[0]);
61 }
62
DfxVideoReportFuzzTest()63 void DfxVideoReportFuzzer::DfxVideoReportFuzzTest()
64 {
65 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
66 return;
67 }
68 fuzz_ = std::make_shared<DfxVideoReport>();
69 CHECK_ERROR_RETURN_LOG(!fuzz_, "Create fuzz_ Error");
70 uint8_t randomNum = GetData<uint8_t>();
71 std::vector<std::string> testStrings = {"test1", "test2", "test3"};
72 std::string videoId(testStrings[randomNum % testStrings.size()]);
73 DpsCallerInfo callerInfo;
74 callerInfo.bundleName = (testStrings[randomNum % testStrings.size()]);
75 callerInfo.version = (testStrings[randomNum % testStrings.size()]);
76 callerInfo.pid = 0;
77 callerInfo.uid = 0;
78 callerInfo.tokenID = 0;
79 DfxVideoReport::GetInstance().ReportAddVideoEvent(videoId, callerInfo);
80 int32_t pauseReason = GetData<int32_t>();
81 DfxVideoReport::GetInstance().ReportPauseVideoEvent(videoId, pauseReason);
82 DfxVideoReport::GetInstance().ReportResumeVideoEvent(videoId);
83 DfxVideoReport::GetInstance().ReportCompleteVideoEvent(videoId);
84 }
85
Test()86 void Test()
87 {
88 auto dfxVideoReport = std::make_unique<DfxVideoReportFuzzer>();
89 if (dfxVideoReport == nullptr) {
90 MEDIA_INFO_LOG("dfxVideoReport is null");
91 return;
92 }
93 dfxVideoReport->DfxVideoReportFuzzTest();
94 }
95
96 typedef void (*TestFuncs[1])();
97
98 TestFuncs g_testFuncs = {
99 Test,
100 };
101
FuzzTest(const uint8_t * rawData,size_t size)102 bool FuzzTest(const uint8_t* rawData, size_t size)
103 {
104 // initialize data
105 RAW_DATA = rawData;
106 g_dataSize = size;
107 g_pos = 0;
108
109 uint32_t code = GetData<uint32_t>();
110 uint32_t len = GetArrLength(g_testFuncs);
111 if (len > 0) {
112 g_testFuncs[code % len]();
113 } else {
114 MEDIA_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
115 }
116
117 return true;
118 }
119 } // namespace CameraStandard
120 } // namespace OHOS
121
122 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)123 extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size)
124 {
125 if (size < OHOS::CameraStandard::THRESHOLD) {
126 return 0;
127 }
128
129 OHOS::CameraStandard::FuzzTest(data, size);
130 return 0;
131 }