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 "abilitymanagerserviceg_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_THREE = 3;
37constexpr size_t FOO_MAX_LEN = 1024;
38constexpr size_t U32_AT_SIZE = 4;
39constexpr uint8_t ENABLE = 2;
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[ENABLE] << 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    bool boolParam = *data % ENABLE;
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    AbilityRequest abilityRequest;
80
81    // fuzz for AbilityManagerService
82    auto abilityms = std::make_shared<AbilityManagerService>();
83    abilityms->CheckCallAbilityPermission(abilityRequest);
84    abilityms->CheckStartByCallPermission(abilityRequest);
85    abilityms->IsCallFromBackground(abilityRequest, boolParam);
86    abilityms->CheckNewRuleSwitchState(stringParam);
87    abilityms->GetStartUpNewRuleFlag();
88    abilityms->AddStartControlParam(*want, token);
89    if (want) {
90        delete want;
91        want = nullptr;
92    }
93    return true;
94}
95}
96
97/* Fuzzer entry point */
98extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
99{
100    /* Run your code on data */
101    if (data == nullptr) {
102        return 0;
103    }
104
105    /* Validate the length of size */
106    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
107        return 0;
108    }
109
110    char* ch = (char*)malloc(size + 1);
111    if (ch == nullptr) {
112        std::cout << "malloc failed." << std::endl;
113        return 0;
114    }
115
116    (void)memset_s(ch, size + 1, 0x00, size + 1);
117    if (memcpy_s(ch, size, data, size) != EOK) {
118        std::cout << "copy failed." << std::endl;
119        free(ch);
120        ch = nullptr;
121        return 0;
122    }
123
124    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
125    free(ch);
126    ch = nullptr;
127    return 0;
128}
129
130