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 "abilityeventutil_fuzzer.h"
17
18#include <iostream>
19#include <cstddef>
20#include <cstdint>
21
22#include "ability_event_util.h"
23#include "securec.h"
24
25using namespace OHOS::AAFwk;
26using namespace OHOS::AppExecFwk;
27
28namespace OHOS {
29namespace {
30constexpr int INPUT_ZERO = 0;
31constexpr int INPUT_ONE = 1;
32constexpr int INPUT_THREE = 3;
33constexpr size_t FOO_MAX_LEN = 1024;
34constexpr uint8_t ENABLE = 2;
35constexpr size_t U32_AT_SIZE = 4;
36constexpr size_t OFFSET_ZERO = 24;
37constexpr size_t OFFSET_ONE = 16;
38constexpr size_t OFFSET_TWO = 8;
39}
40uint32_t GetU32Data(const char* ptr)
41{
42    // convert fuzz input data to an integer
43    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
44        ptr[INPUT_THREE];
45}
46
47bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
48{
49    std::string strParam(data, size);
50    int intParam = static_cast<int>(GetU32Data(data));
51    auto abilityEventUtil = std::make_shared<AbilityEventUtil>();
52    abilityEventUtil->HandleModuleInfoUpdated(strParam, intParam);
53
54    return true;
55}
56}
57
58/* Fuzzer entry point */
59extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
60{
61    /* Run your code on data */
62    if (data == nullptr) {
63        std::cout << "invalid data" << std::endl;
64        return 0;
65    }
66
67    /* Validate the length of size */
68    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
69        return 0;
70    }
71
72    char* ch = (char*)malloc(size + 1);
73    if (ch == nullptr) {
74        std::cout << "malloc failed." << std::endl;
75        return 0;
76    }
77
78    (void)memset_s(ch, size + 1, 0x00, size + 1);
79    if (memcpy_s(ch, size + 1, data, size) != EOK) {
80        std::cout << "copy failed." << std::endl;
81        free(ch);
82        ch = nullptr;
83        return 0;
84    }
85
86    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
87    free(ch);
88    ch = nullptr;
89    return 0;
90}
91
92