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 "abilitymanagerservicesixth_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    int intParam = static_cast<int>(GetU32Data(data));
69    int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
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->GetEventHandler();
83    abilityms->GetUserId();
84    AbilityRequest request;
85    abilityms->GenerateAbilityRequest(*want, intParam, request, token, int32Param);
86    abilityms->GenerateExtensionAbilityRequest(*want, request, token, int32Param);
87    abilityms->StopServiceAbility(*want, int32Param, token);
88    std::shared_ptr<AbilityRecord> abilityRecord;
89    abilityms->OnAbilityDied(abilityRecord);
90    if (want) {
91        delete want;
92        want = nullptr;
93    }
94    return true;
95}
96}
97
98/* Fuzzer entry point */
99extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
100{
101    /* Run your code on data */
102    if (data == nullptr) {
103        return 0;
104    }
105
106    /* Validate the length of size */
107    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
108        return 0;
109    }
110
111    char* ch = (char*)malloc(size + 1);
112    if (ch == nullptr) {
113        std::cout << "malloc failed." << std::endl;
114        return 0;
115    }
116
117    (void)memset_s(ch, size + 1, 0x00, size + 1);
118    if (memcpy_s(ch, size, data, size) != EOK) {
119        std::cout << "copy failed." << std::endl;
120        free(ch);
121        ch = nullptr;
122        return 0;
123    }
124
125    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
126    free(ch);
127    ch = nullptr;
128    return 0;
129}
130
131