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_fuzz_mock.h"
23 #include "socperf_log.h"
24
25 namespace OHOS {
26 namespace SOCPERF {
27 constexpr int32_t MIN_LEN = 4;
28 std::mutex mutexLock;
29 sptr<IRemoteObject> remoteObj = nullptr;
30
DoInit()31 bool DoInit()
32 {
33 std::lock_guard<std::mutex> lock(mutexLock);
34 if (remoteObj) {
35 return true;
36 }
37 auto samgr = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
38 if (!samgr) {
39 return false;
40 }
41 remoteObj = samgr->GetSystemAbility(SOC_PERF_SERVICE_SA_ID);
42 if (!remoteObj) {
43 return false;
44 }
45 return true;
46 }
47
onRemoteRequest(uint32_t code, MessageParcel& data)48 int32_t onRemoteRequest(uint32_t code, MessageParcel& data)
49 {
50 if (!DoInit()) {
51 return -1;
52 }
53 MessageParcel reply;
54 MessageOption option;
55 return remoteObj->SendRequest(code, data, reply, option);
56 }
57
DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)58 bool DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)
59 {
60 if (size <= MIN_LEN) {
61 return false;
62 }
63
64 MessageParcel dataMessageParcel;
65 if (!dataMessageParcel.WriteInterfaceToken(IRemoteStub<ISocPerfService>::GetDescriptor())) {
66 return false;
67 }
68
69 uint32_t code = *(reinterpret_cast<const uint32_t*>(data));
70 size -= sizeof(uint32_t);
71
72 dataMessageParcel.WriteBuffer(data + sizeof(uint32_t), size);
73 dataMessageParcel.RewindRead(0);
74
75 onRemoteRequest(code, dataMessageParcel);
76 return true;
77 }
78 } // namespace SOCPERF
79 } // namespace OHOS
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
83 {
84 /* Run your code on data */
85 OHOS::SOCPERF::MockProcess();
86 OHOS::SOCPERF::DoSomethingInterestingWithMyAPI(data, size);
87 return 0;
88 }
89
90