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 "abilityappdebuginfo_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#define protected public
23#include "app_debug_info.h"
24#undef protected
25#undef private
26#include "parcel.h"
27#include <iostream>
28#include "securec.h"
29#include "configuration.h"
30
31using namespace OHOS::AppExecFwk;
32
33namespace OHOS {
34namespace {
35constexpr int INPUT_ZERO = 0;
36constexpr int INPUT_ONE = 1;
37constexpr int INPUT_TWO = 2;
38constexpr int INPUT_THREE = 3;
39constexpr size_t FOO_MAX_LEN = 1024;
40constexpr size_t U32_AT_SIZE = 4;
41constexpr size_t OFFSET_ZERO = 24;
42constexpr size_t OFFSET_ONE = 16;
43constexpr size_t OFFSET_TWO = 8;
44}
45
46uint32_t GetU32Data(const char* ptr)
47{
48    // convert fuzz input data to an integer
49    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
50        ptr[INPUT_THREE];
51}
52
53bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
54{
55    std::shared_ptr<AppDebugInfo>appDebugInfo = std::make_shared<AppDebugInfo>();
56    if (appDebugInfo == nullptr) {
57        return false;
58    }
59    Parcel parcel;
60    appDebugInfo->ReadFromParcel(parcel);
61    appDebugInfo->Marshalling(parcel);
62    AppDebugInfo::Unmarshalling(parcel);
63    return true;
64}
65}
66
67/* Fuzzer entry point */
68extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
69{
70    /* Run your code on data */
71    if (data == nullptr) {
72        return 0;
73    }
74
75    /* Validate the length of size */
76    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
77        return 0;
78    }
79
80    char* ch = (char*)malloc(size + 1);
81    if (ch == nullptr) {
82        std::cout << "malloc failed." << std::endl;
83        return 0;
84    }
85
86    (void)memset_s(ch, size + 1, 0x00, size + 1);
87    if (memcpy_s(ch, size, data, size) != EOK) {
88        std::cout << "copy failed." << std::endl;
89        free(ch);
90        ch = nullptr;
91        return 0;
92    }
93
94    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
95    free(ch);
96    ch = nullptr;
97    return 0;
98}
99
100