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 <cstddef>
17 #include <cstdint>
18 #include <map>
19
20 #include "pasteboard_client.h"
21
22 using namespace OHOS::MiscServices;
23
24 namespace OHOS {
25 constexpr size_t THRESHOLD = 10;
26 constexpr size_t OFFSET = 4;
27 constexpr size_t RANDNUM_ZERO = 0;
28 constexpr size_t RANDNUM_ONE = 1;
29
ConvertToUint32(const uint8_t * ptr)30 uint32_t ConvertToUint32(const uint8_t *ptr)
31 {
32 if (ptr == nullptr) {
33 return 0;
34 }
35 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
36 return bigVar;
37 }
38
FuzzPasteboardclient(const uint8_t * rawData,size_t size)39 void FuzzPasteboardclient(const uint8_t *rawData, size_t size)
40 {
41 std::shared_ptr<PasteData> pasteData = std::make_shared<PasteData>();
42 std::shared_ptr<PasteDataRecord> pasteDataRecord = std::make_shared<PasteDataRecord>();
43 uint32_t code = ConvertToUint32(rawData);
44 rawData = rawData + OFFSET;
45 size = size - OFFSET;
46 std::string str(reinterpret_cast<const char *>(rawData), size);
47 switch (code) {
48 case RANDNUM_ZERO:
49 pasteData = PasteboardClient::GetInstance()->CreatePlainTextData(str);
50 pasteDataRecord = PasteboardClient::GetInstance()->CreatePlainTextRecord(str);
51 break;
52 case RANDNUM_ONE:
53 pasteData = PasteboardClient::GetInstance()->CreateHtmlData(str);
54 pasteDataRecord = PasteboardClient::GetInstance()->CreateHtmlTextRecord(str);
55 break;
56 default:
57 pasteData = PasteboardClient::GetInstance()->CreateUriData(Uri(str));
58 pasteDataRecord = PasteboardClient::GetInstance()->CreateUriRecord(Uri(str));
59 break;
60 }
61 pasteData->AddRecord(pasteDataRecord);
62 std::vector<uint8_t> buffer;
63 pasteData->Encode(buffer);
64
65 PasteData pasteData2;
66 pasteData2.Decode(buffer);
67 pasteData2.HasMimeType(std::string(reinterpret_cast<const char *>(rawData), size));
68 pasteData2.RemoveRecordAt(code);
69 pasteData2.ReplaceRecordAt(code, pasteDataRecord);
70 }
71 } // namespace OHOS
72 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)73 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
74 {
75 if (size < OHOS::THRESHOLD) {
76 return 0;
77 }
78 /* Run your code on data */
79 OHOS::FuzzPasteboardclient(data, size);
80 return 0;
81 }
82