1 /*
2 * Copyright (c) 2022 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 "pasteboardservice_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "pasteboard_service.h"
22 #include "message_parcel.h"
23
24 using namespace OHOS::MiscServices;
25
26 namespace OHOS {
27 constexpr size_t THRESHOLD = 10;
28 constexpr int32_t OFFSET = 4;
29 const std::u16string PASTEBOARDSERVICE_INTERFACE_TOKEN = u"ohos.miscservices.pasteboard.IPasteboardService";
30
ConvertToUint32(const uint8_t * ptr)31 uint32_t ConvertToUint32(const uint8_t* ptr)
32 {
33 if (ptr == nullptr) {
34 return 0;
35 }
36 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
37 return bigVar;
38 }
FuzzPasteboardService(const uint8_t * rawData,size_t size)39 bool FuzzPasteboardService(const uint8_t* rawData, size_t size)
40 {
41 uint32_t code = ConvertToUint32(rawData);
42 rawData = rawData + OFFSET;
43 size = size - OFFSET;
44
45 MessageParcel data;
46 data.WriteInterfaceToken(PASTEBOARDSERVICE_INTERFACE_TOKEN);
47 data.WriteBuffer(rawData, size);
48 data.RewindRead(0);
49 MessageParcel reply;
50 MessageOption option;
51
52 std::make_shared<PasteboardService>()->OnRemoteRequest(code, data, reply, option);
53
54 return true;
55 }
56 }
57 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)58 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
59 {
60 if (size < OHOS::THRESHOLD) {
61 return 0;
62 }
63 /* Run your code on data */
64 OHOS::FuzzPasteboardService(data, size);
65 return 0;
66 }
67
68