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 "wantparamssecond_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20#include <iostream>
21
22#define private public
23#include "want_params.h"
24#undef private
25#include "float_wrapper.h"
26#include "securec.h"
27
28using namespace OHOS::AAFwk;
29
30namespace OHOS {
31namespace {
32constexpr size_t FOO_MAX_LEN = 1024;
33constexpr size_t U32_AT_SIZE = 4;
34}
35uint32_t GetU32Data(const char* ptr)
36{
37    // convert fuzz input data to an integer
38    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
39}
40bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
41{
42    WantParams wantOther;
43    std::shared_ptr<WantParams> wantParams = std::make_shared<WantParams>(wantOther);
44    Parcel parcel;
45    IArray* ao = nullptr;
46    wantParams->WriteArrayToParcelChar(parcel, ao);
47    wantParams->WriteArrayToParcelShort(parcel, ao);
48    wantParams->WriteToParcelFD(parcel, wantOther);
49    wantParams->WriteToParcelRemoteObject(parcel, wantOther);
50    float floatValue = 0.0;
51    sptr<IInterface> floatIt = Float::Box(floatValue);
52    wantParams->WriteToParcelFloat(parcel, floatIt);
53    int depth = static_cast<int>(GetU32Data(data));
54    wantParams->WriteArrayToParcelWantParams(parcel, ao, depth);
55    sptr<IArray> array;
56    wantParams->ReadFromParcelArrayChar(parcel, array);
57    wantParams->ReadFromParcelArrayShort(parcel, array);
58    std::string key(data ,size);
59    int type = static_cast<int>(GetU32Data(data));
60    wantParams->ReadFromParcelWantParamWrapper(parcel, key, type, 1);
61    wantParams->ReadFromParcelFD(parcel, key);
62    wantParams->ReadFromParcelRemoteObject(parcel, key);
63    wantParams->ReadFromParcelFloat(parcel, key);
64    return true;
65}
66}
67
68/* Fuzzer entry point */
69extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
70{
71    /* Run your code on data */
72    if (data == nullptr) {
73        std::cout << "invalid data" << std::endl;
74        return 0;
75    }
76
77    /* Validate the length of size */
78    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
79        return 0;
80    }
81
82    char* ch = (char *)malloc(size + 1);
83    if (ch == nullptr) {
84        std::cout << "malloc failed." << std::endl;
85        return 0;
86    }
87
88    (void)memset_s(ch, size + 1, 0x00, size + 1);
89    if (memcpy_s(ch, size, data, size) != EOK) {
90        std::cout << "copy failed." << std::endl;
91        free(ch);
92        ch = nullptr;
93        return 0;
94    }
95
96    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
97    free(ch);
98    ch = nullptr;
99    return 0;
100}
101