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 "abilitymgrappexitreasonhelper_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#include "app_exit_reason_helper.h"
23#include "ability_manager_service.h"
24#undef private
25
26#include "securec.h"
27#include "ability_record.h"
28
29using namespace OHOS::AAFwk;
30using namespace OHOS::AppExecFwk;
31
32namespace OHOS {
33namespace {
34constexpr int INPUT_ZERO = 0;
35constexpr int INPUT_ONE = 1;
36constexpr int INPUT_TWO = 2;
37constexpr int INPUT_THREE = 3;
38constexpr size_t FOO_MAX_LEN = 1024;
39constexpr size_t U32_AT_SIZE = 4;
40constexpr size_t OFFSET_ZERO = 24;
41constexpr size_t OFFSET_ONE = 16;
42constexpr size_t OFFSET_TWO = 8;
43constexpr uint8_t ENABLE = 2;
44}
45uint32_t GetU32Data(const char* ptr)
46{
47    // convert fuzz input data to an integer
48    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
49        ptr[INPUT_THREE];
50}
51
52sptr<Token> GetFuzzAbilityToken()
53{
54    sptr<Token> token = nullptr;
55    AbilityRequest abilityRequest;
56    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
57    abilityRequest.abilityInfo.name = "MainAbility";
58    abilityRequest.abilityInfo.type = AbilityType::DATA;
59    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
60    if (abilityRecord) {
61        token = abilityRecord->GetToken();
62    }
63    return token;
64}
65
66bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
67{
68    std::shared_ptr<SubManagersHelper> subManagersHelper;
69    std::shared_ptr<AppExitReasonHelper> infos = std::make_shared<AppExitReasonHelper>(subManagersHelper);
70    std::string jsonStr(data, size);
71    Reason reasonmin = Reason::REASON_MIN;
72    Reason reasonmax = Reason::REASON_MAX;
73    for (int i  = reasonmin; i <= reasonmax; ++i) {
74        Reason reason = static_cast<Reason>(i);
75        ExitReason exitReason(reason, jsonStr);
76        infos->RecordAppExitReason(exitReason);
77        int32_t uid = static_cast<int32_t>(GetU32Data(data));
78        int32_t appIndex = static_cast<int32_t>(GetU32Data(data));
79        infos->RecordAppExitReason(jsonStr, uid, appIndex, exitReason);
80        int32_t pid = static_cast<int32_t>(GetU32Data(data));
81        infos->RecordProcessExtensionExitReason(pid, jsonStr, exitReason);
82        infos->RecordProcessExitReason(pid, exitReason);
83        uint32_t accessTokenId = static_cast<uint32_t>(GetU32Data(data));
84        infos->RecordProcessExitReason(pid, jsonStr, uid, accessTokenId, exitReason);
85        std::vector<std::string> abilityLists;
86        infos->GetActiveAbilityList(uid, abilityLists, pid);
87        infos->GetActiveAbilityListFromUIAbilityManager(uid, abilityLists, pid);
88        infos->IsExitReasonValid(exitReason);
89    }
90    return true;
91}
92}
93
94/* Fuzzer entry point */
95extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
96{
97    /* Run your code on data */
98    if (data == nullptr) {
99        std::cout << "invalid data" << std::endl;
100        return 0;
101    }
102
103    /* Validate the length of size */
104    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
105        return 0;
106    }
107
108    char* ch = (char*)malloc(size + 1);
109    if (ch == nullptr) {
110        std::cout << "malloc failed." << std::endl;
111        return 0;
112    }
113
114    (void)memset_s(ch, size + 1, 0x00, size + 1);
115    if (memcpy_s(ch, size + 1, data, size) != EOK) {
116        std::cout << "copy failed." << std::endl;
117        free(ch);
118        ch = nullptr;
119        return 0;
120    }
121
122    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
123    free(ch);
124    ch = nullptr;
125    return 0;
126}
127
128