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 "abilitymgrabilitymanagerstub_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#include "ability_manager_service.h"
23#undef private
24
25#include "securec.h"
26#include "ability_record.h"
27
28using namespace OHOS::AAFwk;
29using namespace OHOS::AppExecFwk;
30
31namespace OHOS {
32namespace {
33constexpr int INPUT_ZERO = 0;
34constexpr int INPUT_ONE = 1;
35constexpr int INPUT_TWO = 2;
36constexpr int INPUT_THREE = 3;
37constexpr size_t FOO_MAX_LEN = 1024;
38constexpr size_t U32_AT_SIZE = 4;
39constexpr size_t OFFSET_ZERO = 24;
40constexpr size_t OFFSET_ONE = 16;
41constexpr size_t OFFSET_TWO = 8;
42constexpr uint8_t ENABLE = 2;
43}
44const std::u16string ABILITYMGR_INTERFACE_TOKEN = u"ohos.aafwk.AbilityManager";
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    uint32_t codeOne = static_cast<uint32_t>(AbilityManagerInterfaceCode::GET_PENDING_WANT_TYPE);
69    MessageParcel parcel;
70    parcel.WriteInterfaceToken(ABILITYMGR_INTERFACE_TOKEN);
71    parcel.WriteBuffer(data, size);
72    parcel.RewindRead(0);
73    MessageParcel reply;
74    MessageOption option;
75    std::shared_ptr<AbilityManagerService> abmsOne = std::make_shared<AbilityManagerService>();
76    abmsOne->OnRemoteRequest(codeOne, parcel, reply, option);
77
78    uint32_t codeTwo = static_cast<uint32_t>(AbilityManagerInterfaceCode::START_UI_EXTENSION_ABILITY);
79    MessageParcel parcels;
80    parcels.WriteInterfaceToken(ABILITYMGR_INTERFACE_TOKEN);
81    parcels.WriteBuffer(data, size);
82    parcels.RewindRead(0);
83    std::shared_ptr<AbilityManagerService> abmsTwo = std::make_shared<AbilityManagerService>();
84    abmsTwo->OnRemoteRequest(codeTwo, parcels, reply, option);
85    return true;
86}
87}
88
89/* Fuzzer entry point */
90extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
91{
92    /* Run your code on data */
93    if (data == nullptr) {
94        std::cout << "invalid data" << std::endl;
95        return 0;
96    }
97
98    /* Validate the length of size */
99    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
100        return 0;
101    }
102
103    char* ch = (char*)malloc(size + 1);
104    if (ch == nullptr) {
105        std::cout << "malloc failed." << std::endl;
106        return 0;
107    }
108
109    (void)memset_s(ch, size + 1, 0x00, size + 1);
110    if (memcpy_s(ch, size + 1, data, size) != EOK) {
111        std::cout << "copy failed." << std::endl;
112        free(ch);
113        ch = nullptr;
114        return 0;
115    }
116
117    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
118    free(ch);
119    ch = nullptr;
120    return 0;
121}
122
123