1 /*
2 * Copyright (c) 2023 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 "vibratestub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "accesstoken_kit.h"
22 #include "message_parcel.h"
23 #include "nativetoken_kit.h"
24 #include "securec.h"
25 #include "token_setproc.h"
26
27 #include "miscdevice_service.h"
28
29 namespace OHOS {
30 namespace Sensors {
31 using namespace Security::AccessToken;
32 using Security::AccessToken::AccessTokenID;
33 namespace {
34 constexpr size_t U32_AT_SIZE = 4;
35 auto g_service = MiscdeviceDelayedSpSingleton<MiscdeviceService>::GetInstance();
36 const std::u16string VIBRATOR_INTERFACE_TOKEN = u"OHOS.Sensors.IMiscdeviceService";
37 } // namespace
38
39 template<class T>
GetObject(const uint8_t * data,size_t size,T & object)40 size_t GetObject(const uint8_t *data, size_t size, T &object)
41 {
42 size_t objectSize = sizeof(object);
43 if (objectSize > size) {
44 return 0;
45 }
46 errno_t ret = memcpy_s(&object, objectSize, data, objectSize);
47 if (ret != EOK) {
48 return 0;
49 }
50 return objectSize;
51 }
52
SetUpTestCase()53 void SetUpTestCase()
54 {
55 const char **perms = new (std::nothrow) const char *[1];
56 if (perms == nullptr) {
57 return;
58 }
59 perms[0] = "ohos.permission.VIBRATE";
60 TokenInfoParams infoInstance = {
61 .dcapsNum = 0,
62 .permsNum = 1,
63 .aclsNum = 0,
64 .dcaps = nullptr,
65 .perms = perms,
66 .acls = nullptr,
67 .processName = "VibrateStubFuzzTest",
68 .aplStr = "system_core",
69 };
70 uint64_t tokenId = GetAccessTokenId(&infoInstance);
71 SetSelfTokenID(tokenId);
72 AccessTokenKit::ReloadNativeTokenInfo();
73 delete[] perms;
74 }
75
OnRemoteRequestFuzzTest(const uint8_t * data,size_t size)76 bool OnRemoteRequestFuzzTest(const uint8_t *data, size_t size)
77 {
78 SetUpTestCase();
79 if (g_service == nullptr) {
80 return false;
81 }
82 MessageParcel datas;
83 datas.WriteInterfaceToken(VIBRATOR_INTERFACE_TOKEN);
84 VibratorIdentifierIPC identifier;
85 size_t startPos = 0;
86 startPos += GetObject<int32_t>(data + startPos, size - startPos, identifier.deviceId);
87 startPos += GetObject<int32_t>(data + startPos, size - startPos, identifier.vibratorId);
88 datas.WriteParcelable(&identifier);
89 int32_t timeOut = 0;
90 startPos += GetObject<int32_t>(data + startPos, size - startPos, timeOut);
91 datas.WriteInt32(timeOut);
92 int32_t usage = 0;
93 startPos += GetObject<int32_t>(data + startPos, size - startPos, usage);
94 datas.WriteInt32(usage);
95 int32_t systemUsage = 0;
96 GetObject<int32_t>(data + startPos, size - startPos, systemUsage);
97 datas.WriteInt32(systemUsage);
98 datas.RewindRead(0);
99 MessageParcel reply;
100 MessageOption option;
101 g_service->OnStartFuzz();
102 g_service->OnRemoteRequest(static_cast<uint32_t>(IMiscdeviceServiceIpcCode::COMMAND_VIBRATE),
103 datas, reply, option);
104 return true;
105 }
106 } // namespace Sensors
107 } // namespace OHOS
108
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)109 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
110 {
111 /* Run your code on data */
112 if (data == nullptr) {
113 return 0;
114 }
115
116 /* Validate the length of size */
117 if (size < OHOS::Sensors::U32_AT_SIZE) {
118 return 0;
119 }
120
121 OHOS::Sensors::OnRemoteRequestFuzzTest(data, size);
122 return 0;
123 }
124