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 "keyeventconsumer_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "keyevent_consumer_stub.h"
22 #include "message_parcel.h"
23
24 using namespace OHOS::MiscServices;
25 namespace OHOS {
26 constexpr size_t THRESHOLD = 10;
27 constexpr int32_t OFFSET = 4;
28 const std::u16string AGENTSTUB_INTERFACE_TOKEN = u"ohos.miscservices.inputmethod.IKeyEventConsumer";
ConvertToUint32(const uint8_t * ptr)29 uint32_t ConvertToUint32(const uint8_t *ptr)
30 {
31 if (ptr == nullptr) {
32 return 0;
33 }
34 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
35 return bigVar;
36 }
FuzzKeyEventConsumerStub(const uint8_t * rawData,size_t size)37 bool FuzzKeyEventConsumerStub(const uint8_t *rawData, size_t size)
38 {
39 bool isConsumed = static_cast<bool>(rawData[0] % 2);
40 uint32_t code = ConvertToUint32(rawData);
41 rawData = rawData + OFFSET;
42 size = size - OFFSET;
43
44 MessageParcel data;
45 data.WriteInterfaceToken(AGENTSTUB_INTERFACE_TOKEN);
46 data.WriteBuffer(rawData, size);
47 data.RewindRead(0);
48 MessageParcel reply;
49 MessageOption option;
50
51 std::shared_ptr <MMI::KeyEvent> keyEvent = MMI::KeyEvent::Create();
52
53 sptr <KeyEventConsumerStub> stub = new KeyEventConsumerStub(
54 [](std::shared_ptr <MMI::KeyEvent> &keyEvent, bool isConsumed) {}, keyEvent);
55 stub->OnKeyEventResult(isConsumed);
56 stub->OnRemoteRequest(code, data, reply, option);
57
58 return true;
59 }
60 } // namespace OHOS
61 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)62 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
63 {
64 if (size < OHOS::THRESHOLD) {
65 return 0;
66 }
67 /* Run your code on data */
68 OHOS::FuzzKeyEventConsumerStub(data, size);
69 return 0;
70 }