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 "native_implement_eventhandler.h"
17#include "native_interface_eventhandler.h"
18#include "nativeimplementeventhandler_fuzzer.h"
19#include "securec.h"
20
21namespace OHOS {
22namespace {
23    constexpr size_t U32_AT_SIZE = 4;
24    constexpr uint8_t ENABLE = 2;
25}
26bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
27{
28    bool current = *data % ENABLE;
29    if (current == 0) {
30        int32_t fileDescriptor = U32_AT(reinterpret_cast<const uint8_t*>(data));
31        EventRunnerNativeImplement eventRunnerNativeImplement(current);
32        eventRunnerNativeImplement.RemoveFileDescriptorListener(fileDescriptor);
33        return true;
34    } else {
35        return false;
36    }
37}
38}
39
40/* Fuzzer entry point */
41extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
42{
43    /* Run your code on data */
44    if (data == nullptr) {
45        return 0;
46    }
47
48    if (size < OHOS::U32_AT_SIZE) {
49        return 0;
50    }
51
52    char* ch = reinterpret_cast<char *>(malloc(size + 1));
53    if (ch == nullptr) {
54        return 0;
55    }
56
57    (void)memset_s(ch, size + 1, 0x00, size + 1);
58    if (memcpy_s(ch, size, data, size) != EOK) {
59        free(ch);
60        ch = nullptr;
61        return 0;
62    }
63
64    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
65    free(ch);
66    ch = nullptr;
67    return 0;
68}
69