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_proxy_fuzzer.h"
17 #include "camera_log.h"
18 #include "message_parcel.h"
19 #include <cstddef>
20 #include <cstdint>
21 #include <memory>
22 #include "token_setproc.h"
23 #include "nativetoken_kit.h"
24 #include "accesstoken_kit.h"
25 #include "securec.h"
26 #include "system_ability_definition.h"
27 #include "iservice_registry.h"
28
29 namespace OHOS {
30 namespace CameraStandard {
31 static constexpr int32_t MAX_CODE_LEN = 512;
32 static constexpr int32_t MIN_SIZE_NUM = 4;
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<HStreamDepthDataCallbackProxy> HStreamDepthDataCallbackProxyFuzzer::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
HStreamDepthDataCallbackProxyFuzzTest()70 void HStreamDepthDataCallbackProxyFuzzer::HStreamDepthDataCallbackProxyFuzzTest()
71 {
72 if ((RAW_DATA == nullptr) || (g_dataSize > MAX_CODE_LEN) || (g_dataSize < MIN_SIZE_NUM)) {
73 return;
74 }
75 auto samgr = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
76 if (samgr == nullptr) {
77 return;
78 }
79 sptr<IRemoteObject> impl = samgr->GetSystemAbility(BUNDLE_MGR_SERVICE_SYS_ABILITY_ID);
80 if (impl == nullptr) {
81 return;
82 }
83 fuzz_ = std::make_shared<HStreamDepthDataCallbackProxy>(impl);
84 CHECK_ERROR_RETURN_LOG(!fuzz_, "Create fuzz_ Error");
85 }
86
Test()87 void Test()
88 {
89 auto hstreamDepthDataCallbackProxy = std::make_unique<HStreamDepthDataCallbackProxyFuzzer>();
90 if (hstreamDepthDataCallbackProxy == nullptr) {
91 MEDIA_INFO_LOG("hstreamDepthDataCallbackProxy is null");
92 return;
93 }
94 hstreamDepthDataCallbackProxy->HStreamDepthDataCallbackProxyFuzzTest();
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 }