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 "abilitymanagerservicea_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#define protected public
23#include "ability_manager_service.h"
24#undef protected
25#undef private
26
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;
43}
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    int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
69    std::string stringParam(data, size);
70    Parcel wantParcel;
71    Want* want = nullptr;
72    if (wantParcel.WriteBuffer(data, size)) {
73        want = Want::Unmarshalling(wantParcel);
74        if (!want) {
75            return false;
76        }
77    }
78    sptr<IRemoteObject> token = GetFuzzAbilityToken();
79
80    // fuzz for AbilityManagerService
81    auto abilityms = std::make_shared<AbilityManagerService>();
82    abilityms->ScheduleRecoverAbility(token, int32Param);
83    MissionSnapshot missionSnapshot;
84    abilityms->GetRemoteMissionSnapshotInfo(stringParam, int32Param, missionSnapshot);
85    abilityms->StartFreezingScreen();
86    abilityms->StopFreezingScreen();
87
88    return true;
89}
90}
91
92/* Fuzzer entry point */
93extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
94{
95    /* Run your code on data */
96    if (data == nullptr) {
97        return 0;
98    }
99
100    /* Validate the length of size */
101    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
102        return 0;
103    }
104
105    char* ch = (char*)malloc(size + 1);
106    if (ch == nullptr) {
107        std::cout << "malloc failed." << std::endl;
108        return 0;
109    }
110
111    (void)memset_s(ch, size + 1, 0x00, size + 1);
112    if (memcpy_s(ch, size, data, size) != EOK) {
113        std::cout << "copy failed." << std::endl;
114        free(ch);
115        ch = nullptr;
116        return 0;
117    }
118
119    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
120    free(ch);
121    ch = nullptr;
122    return 0;
123}
124
125