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 "abilityapppreloader_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#define protected public
23#include "app_preloader.h"
24#include "bundle_mgr_helper.h"
25#undef protected
26#undef private
27#include "parcel.h"
28#include <iostream>
29#include "securec.h"
30#include "configuration.h"
31
32using namespace OHOS::AppExecFwk;
33
34namespace OHOS {
35namespace {
36constexpr int INPUT_ZERO = 0;
37constexpr int INPUT_ONE = 1;
38constexpr int INPUT_TWO = 2;
39constexpr int INPUT_THREE = 3;
40constexpr size_t FOO_MAX_LEN = 1024;
41constexpr size_t U32_AT_SIZE = 4;
42constexpr size_t OFFSET_ZERO = 24;
43constexpr size_t OFFSET_ONE = 16;
44constexpr size_t OFFSET_TWO = 8;
45}
46
47uint32_t GetU32Data(const char* ptr)
48{
49    // convert fuzz input data to an integer
50    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
51        ptr[INPUT_THREE];
52}
53
54bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
55{
56    std::shared_ptr<RemoteClientManager> remoteClientManager = std::make_shared<RemoteClientManager>();
57    auto bundleMgrHelper = std::make_shared<AppExecFwk::BundleMgrHelper>();
58    remoteClientManager->SetBundleManagerHelper(bundleMgrHelper);
59    auto appPreloader = std::make_shared<AppPreloader>(remoteClientManager);
60    std::string bundleName(data, size);
61    int32_t userId = static_cast<int32_t>(GetU32Data(data));
62    int32_t appIndex = static_cast<int32_t>(GetU32Data(data));
63    PreloadRequest request;
64    appPreloader->GeneratePreloadRequest(bundleName, userId, appIndex, request);
65    appPreloader->GetBundleManagerHelper();
66    AbilityInfo abilityInfo;
67    appPreloader->CheckPreloadConditions(abilityInfo);
68    AAFwk::Want launchWant;
69    appPreloader->GetLaunchWant(bundleName, userId, launchWant);
70    appPreloader->GetLaunchAbilityInfo(launchWant, userId, abilityInfo);
71    appPreloader->PreCheck(bundleName, PreloadMode::PRE_MAKE);
72    return true;
73}
74}
75
76/* Fuzzer entry point */
77extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
78{
79    /* Run your code on data */
80    if (data == nullptr) {
81        return 0;
82    }
83
84    /* Validate the length of size */
85    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
86        return 0;
87    }
88
89    char* ch = (char*)malloc(size + 1);
90    if (ch == nullptr) {
91        std::cout << "malloc failed." << std::endl;
92        return 0;
93    }
94
95    (void)memset_s(ch, size + 1, 0x00, size + 1);
96    if (memcpy_s(ch, size, data, size) != EOK) {
97        std::cout << "copy failed." << std::endl;
98        free(ch);
99        ch = nullptr;
100        return 0;
101    }
102
103    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
104    free(ch);
105    ch = nullptr;
106    return 0;
107}
108
109