1 /*
2 * Copyright (c) 2022-2023 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 "socperf_fuzzer.h"
17
18 #include "iservice_registry.h"
19 #include "system_ability_definition.h"
20
21 #include "i_socperf_service.h"
22 #include "socperf_log.h"
23
24 namespace OHOS {
25 namespace SOCPERF {
26 constexpr int32_t MIN_LEN = 4;
27 std::mutex mutexLock;
28 sptr<IRemoteObject> remoteObj = nullptr;
29
DoInit()30 bool DoInit()
31 {
32 std::lock_guard<std::mutex> lock(mutexLock);
33 if (remoteObj) {
34 return true;
35 }
36 auto samgr = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
37 if (!samgr) {
38 return false;
39 }
40 remoteObj = samgr->GetSystemAbility(SOC_PERF_SERVICE_SA_ID);
41 if (!remoteObj) {
42 return false;
43 }
44 return true;
45 }
46
onRemoteRequest(uint32_t code,MessageParcel & data)47 int32_t onRemoteRequest(uint32_t code, MessageParcel& data)
48 {
49 if (!DoInit()) {
50 return -1;
51 }
52 MessageParcel reply;
53 MessageOption option;
54 return remoteObj->SendRequest(code, data, reply, option);
55 }
56
DoSomethingInterestingWithMyAPI(const uint8_t * data,size_t size)57 bool DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)
58 {
59 if (size <= MIN_LEN) {
60 return false;
61 }
62
63 MessageParcel dataMessageParcel;
64 if (!dataMessageParcel.WriteInterfaceToken(IRemoteStub<ISocPerfService>::GetDescriptor())) {
65 return false;
66 }
67
68 uint32_t code = *(reinterpret_cast<const uint32_t*>(data));
69 size -= sizeof(uint32_t);
70
71 dataMessageParcel.WriteBuffer(data + sizeof(uint32_t), size);
72 dataMessageParcel.RewindRead(0);
73
74 onRemoteRequest(code, dataMessageParcel);
75 return true;
76 }
77 } // namespace SOCPERF
78 } // namespace OHOS
79
80 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)81 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
82 {
83 /* Run your code on data */
84 OHOS::SOCPERF::DoSomethingInterestingWithMyAPI(data, size);
85 return 0;
86 }
87
88