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 "sensoronremoterequest_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 "sensor.h"
28 #include "sensor_service.h"
29
30 namespace OHOS {
31 namespace Sensors {
32 using namespace Security::AccessToken;
33 using Security::AccessToken::AccessTokenID;
34 namespace {
35 constexpr size_t U32_AT_SIZE = 4;
36 constexpr uint32_t IPC_CODE_COUNT = 13;
37 auto g_service = SensorDelayedSpSingleton<SensorService>::GetInstance();
38 const std::u16string SENSOR_INTERFACE_TOKEN = u"OHOS.Sensors.ISensorService";
39 } // namespace
40
SetUpTestCase()41 void SetUpTestCase()
42 {
43 const char **perms = new (std::nothrow) const char *[2];
44 if (perms == nullptr) {
45 return;
46 }
47 perms[0] = "ohos.permission.ACCELEROMETER";
48 perms[1] = "ohos.permission.MANAGE_SENSOR";
49 TokenInfoParams infoInstance = {
50 .dcapsNum = 0,
51 .permsNum = 2,
52 .aclsNum = 0,
53 .dcaps = nullptr,
54 .perms = perms,
55 .acls = nullptr,
56 .processName = "SensorOnRemoteRequestFuzzTest",
57 .aplStr = "system_core",
58 };
59 uint64_t tokenId = GetAccessTokenId(&infoInstance);
60 SetSelfTokenID(tokenId);
61 AccessTokenKit::ReloadNativeTokenInfo();
62 delete[] perms;
63 }
64
GetU32Data(const uint8_t * data)65 uint32_t GetU32Data(const uint8_t *data)
66 {
67 // convert fuzz input data to an integer
68 return ((data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]) % IPC_CODE_COUNT;
69 }
70
OnRemoteRequestFuzzTest(const uint8_t * data,size_t size)71 bool OnRemoteRequestFuzzTest(const uint8_t *data, size_t size)
72 {
73 SetUpTestCase();
74 uint32_t code = GetU32Data(data);
75 MessageParcel datas;
76 datas.WriteInterfaceToken(SENSOR_INTERFACE_TOKEN);
77 datas.WriteBuffer(data + U32_AT_SIZE, size - U32_AT_SIZE);
78 datas.RewindRead(0);
79 MessageParcel reply;
80 MessageOption option;
81 g_service->OnRemoteRequest(code, datas, reply, option);
82 return true;
83 }
84 } // namespace Sensors
85 } // namespace OHOS
86
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)87 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
88 {
89 /* Run your code on data */
90 if (data == nullptr) {
91 return 0;
92 }
93
94 /* Validate the length of size */
95 if (size < OHOS::Sensors::U32_AT_SIZE) {
96 return 0;
97 }
98
99 OHOS::Sensors::OnRemoteRequestFuzzTest(data, size);
100 return 0;
101 }
102