1 /*
2 * Copyright (c) 2025 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 "serialread_fuzzer.h"
17 #include "v1_0/iserial_interface.h"
18
19 using namespace OHOS::HDI::Usb::Serial::V1_0;
20
21 namespace {
22 constexpr int32_t OK = 0;
23 }
24
25 namespace OHOS {
26 namespace SERIAL {
SerialReadFuzzTest(const uint8_t * data,size_t size)27 bool SerialReadFuzzTest(const uint8_t* data, size_t size)
28 {
29 if (data == nullptr || size < sizeof(int32_t) + sizeof(uint32_t) + sizeof(uint32_t)) {
30 return false;
31 }
32 auto serialInterface = ISerialInterface::Get("serial_interface_service", true);
33 const int32_t portId = *reinterpret_cast<const int32_t *>(data);
34 const uint32_t readSize = *reinterpret_cast<const uint32_t *>(data + sizeof(uint32_t));
35 const uint32_t timeOut = *reinterpret_cast<const uint32_t *>(data + sizeof(uint32_t) + sizeof(uint32_t));
36 std::vector<uint8_t> buffer;
37 if (serialInterface->SerialRead(portId, buffer, readSize, timeOut) != OK) {
38 return false;
39 }
40 return true;
41 }
42 } // SERIAL
43 } // OHOS
44
45 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)46 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
47 {
48 /* Run your code on data */
49 OHOS::SERIAL::SerialReadFuzzTest(data, size);
50 return 0;
51 }
52
53