1 /*
2 * Copyright (c) 2024 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 "pasteboardobserver_fuzzer.h"
17
18 #include "message_parcel.h"
19
20 #include <map>
21
22 #include "pasteboard_error.h"
23 #include "pasteboard_observer.h"
24 #include "pasteboard_serv_ipc_interface_code.h"
25
26 namespace OHOS {
27 using namespace OHOS::Security::PasteboardServ;
28 using namespace OHOS::MiscServices;
29 constexpr size_t THRESHOLD = 2;
30 const std::u16string PASTEBOARDSERVICE_INTERFACE_TOKEN = u"ohos.miscservices.pasteboard.IPasteboardService";
31
32 template<class T>
TypeCast(const uint8_t * data,int * pos=nullptr)33 T TypeCast(const uint8_t *data, int *pos = nullptr)
34 {
35 if (pos) {
36 *pos += sizeof(T);
37 }
38 return *(reinterpret_cast<const T*>(data));
39 }
40
FuzzPasteboardObserver(const uint8_t * rawData,size_t size)41 bool FuzzPasteboardObserver(const uint8_t *rawData, size_t size)
42 {
43 if (rawData == nullptr || size < sizeof(uint32_t)) {
44 return true;
45 }
46 uint32_t code = TypeCast<uint32_t>(rawData);
47 MessageParcel data;
48 data.WriteInterfaceToken(PASTEBOARDSERVICE_INTERFACE_TOKEN);
49 MessageParcel reply;
50 MessageOption option;
51 std::make_shared<PasteboardObserver>()->OnRemoteRequest(
52 static_cast<uint32_t>(code % THRESHOLD), data, reply, option);
53 return true;
54 }
55
FuzzPasteboardObserverOnPasteboardChangedStub(const uint8_t * rawData,size_t size)56 bool FuzzPasteboardObserverOnPasteboardChangedStub(const uint8_t *rawData, size_t size)
57 {
58 MessageParcel data;
59 data.WriteInterfaceToken(PasteboardObserverStub::GetDescriptor());
60 MessageParcel reply;
61 MessageOption option;
62 std::make_shared<PasteboardObserver>()->OnRemoteRequest(
63 static_cast<uint32_t>(PasteboardObserverInterfaceCode::ON_PASTE_BOARD_CHANGE), data, reply, option);
64 return true;
65 }
66
FuzzPasteboardObserverOnPasteboardEventStub(const uint8_t * rawData,size_t size)67 bool FuzzPasteboardObserverOnPasteboardEventStub(const uint8_t *rawData, size_t size)
68 {
69 if (rawData == nullptr || size < sizeof(int32_t)) {
70 return true;
71 }
72
73 MessageParcel data;
74 data.WriteInterfaceToken(PasteboardObserverStub::GetDescriptor());
75 MessageParcel reply;
76 MessageOption option;
77 int pos = 0;
78 int32_t status = TypeCast<int32_t>(rawData, &pos);
79 data.WriteString(std::string(reinterpret_cast<const char*>(rawData + pos), size - pos));
80 data.WriteInt32(status);
81 std::make_shared<PasteboardObserver>()->OnRemoteRequest(
82 static_cast<uint32_t>(PasteboardObserverInterfaceCode::ON_PASTE_BOARD_EVENT), data, reply, option);
83 return true;
84 }
85 } // namespace OHOS
86 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)87 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
88 {
89 /* Run your code on data */
90 OHOS::FuzzPasteboardObserver(data, size);
91 OHOS::FuzzPasteboardObserverOnPasteboardChangedStub(data, size);
92 OHOS::FuzzPasteboardObserverOnPasteboardEventStub(data, size);
93 return 0;
94 }