1/*
2 * Copyright (c) 2022-2022 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 "controlchannelstub_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "global.h"
22#include "input_control_channel_stub.h"
23#include "message_parcel.h"
24
25using namespace OHOS::MiscServices;
26namespace OHOS {
27constexpr size_t THRESHOLD = 10;
28constexpr int32_t OFFSET = 4;
29const std::u16string CONTROLCHANNEL_INTERFACE_TOKEN = u"ohos.miscservices.inputmethod.InputControlChannel";
30
31uint32_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}
39bool FuzzControlChannel(const uint8_t *rawData, size_t size)
40{
41    constexpr int32_t MAIN_USER_ID = 100;
42    uint32_t code = ConvertToUint32(rawData);
43    rawData = rawData + OFFSET;
44    size = size - OFFSET;
45
46    MessageParcel data;
47    data.WriteInterfaceToken(CONTROLCHANNEL_INTERFACE_TOKEN);
48    data.WriteBuffer(rawData, size);
49    data.RewindRead(0);
50    MessageParcel reply;
51    MessageOption option;
52
53    sptr<InputControlChannelStub> controlChannel = new InputControlChannelStub(MAIN_USER_ID);
54    controlChannel->OnRemoteRequest(code, data, reply, option);
55
56    return true;
57}
58} // namespace OHOS
59/* Fuzzer entry point */
60extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
61{
62    if (size < OHOS::THRESHOLD) {
63        return 0;
64    }
65    /* Run your code on data */
66    OHOS::FuzzControlChannel(data, size);
67    return 0;
68}