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 "pasteboardservice_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <map>
21
22 #include "copy_uri_handler.h"
23 #include "i_pasteboard_service.h"
24 #include "message_parcel.h"
25 #include "paste_data.h"
26 #include "pasteboard_service.h"
27 #include "pasteboard_serv_ipc_interface_code.h"
28
29 using namespace OHOS::Security::PasteboardServ;
30 using namespace OHOS::MiscServices;
31
32 namespace OHOS {
33 constexpr size_t THRESHOLD = 10;
34 constexpr int32_t OFFSET = 4;
35 constexpr size_t RANDNUM_ZERO = 0;
36 constexpr size_t RANDNUM_ONE = 1;
37 const std::u16string PASTEBOARDSERVICE_INTERFACE_TOKEN = u"ohos.miscservices.pasteboard.IPasteboardService";
38
ConvertToUint32(const uint8_t * ptr)39 uint32_t ConvertToUint32(const uint8_t *ptr)
40 {
41 if (ptr == nullptr) {
42 return 0;
43 }
44 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
45 return bigVar;
46 }
47
FuzzPasteboardService(const uint8_t * rawData,size_t size)48 bool FuzzPasteboardService(const uint8_t *rawData, size_t size)
49 {
50 uint32_t code = ConvertToUint32(rawData);
51 rawData = rawData + OFFSET;
52 size = size - OFFSET;
53
54 MessageParcel data;
55 data.WriteInterfaceToken(PASTEBOARDSERVICE_INTERFACE_TOKEN);
56 data.WriteBuffer(rawData, size);
57 data.RewindRead(0);
58 MessageParcel reply;
59 MessageOption option;
60
61 std::make_shared<PasteboardService>()->OnRemoteRequest(code, data, reply, option);
62
63 return true;
64 }
65
FuzzPasteboardServiceOnSetPasteData(const uint8_t * rawData,size_t size)66 bool FuzzPasteboardServiceOnSetPasteData(const uint8_t *rawData, size_t size)
67 {
68 PasteData pasteData;
69 uint32_t code = ConvertToUint32(rawData);
70 rawData = rawData + OFFSET;
71 size = size - OFFSET;
72 std::string str(reinterpret_cast<const char *>(rawData), size);
73 switch (code) {
74 case RANDNUM_ZERO:
75 pasteData.AddTextRecord(str);
76 break;
77 case RANDNUM_ONE:
78 pasteData.AddHtmlRecord(str);
79 break;
80 default:
81 pasteData.AddUriRecord(Uri(str));
82 break;
83 }
84
85 MessageParcel data;
86 MessageParcel reply;
87 MessageOption option;
88 data.WriteInterfaceToken(PASTEBOARDSERVICE_INTERFACE_TOKEN);
89 std::vector<uint8_t> pasteDataTlv(0);
90 pasteData.Encode(pasteDataTlv);
91 data.WriteInt32(pasteDataTlv.size());
92 data.WriteRawData(pasteDataTlv.data(), pasteDataTlv.size());
93
94 CopyUriHandler copyHandler;
95 pasteData.WriteUriFd(data, copyHandler);
96
97 std::make_shared<PasteboardService>()->OnRemoteRequest(
98 static_cast<uint32_t>(PasteboardServiceInterfaceCode::SET_PASTE_DATA), data, reply, option);
99
100 return true;
101 }
102 } // namespace OHOS
103 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)104 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
105 {
106 if (size < OHOS::THRESHOLD) {
107 return 0;
108 }
109 /* Run your code on data */
110 OHOS::FuzzPasteboardService(data, size);
111 OHOS::FuzzPasteboardServiceOnSetPasteData(data, size);
112 return 0;
113 }
114