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 "abilityinterfacesappmgrchildschedulerstub_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#include "child_scheduler_stub.h"
23#include "child_scheduler_interface.h"
24#undef private
25
26#include "securec.h"
27#include "parcel.h"
28#include "ability_record.h"
29
30using namespace OHOS::AAFwk;
31using namespace OHOS::AppExecFwk;
32
33namespace OHOS {
34namespace {
35constexpr int INPUT_ZERO = 0;
36constexpr int INPUT_ONE = 1;
37constexpr int INPUT_TWO = 2;
38constexpr int INPUT_THREE = 3;
39constexpr size_t FOO_MAX_LEN = 1024;
40constexpr size_t U32_AT_SIZE = 4;
41constexpr size_t OFFSET_ZERO = 24;
42constexpr size_t OFFSET_ONE = 16;
43constexpr size_t OFFSET_TWO = 8;
44constexpr uint8_t ENABLE = 2;
45}
46const std::u16string CHILD_SCHEDULER_TOKEN = u"ohos.appexecfwk.ChildScheduler";
47uint32_t GetU32Data(const char* ptr)
48{
49    // convert fuzz input data to an integer
50    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
51        ptr[INPUT_THREE];
52}
53
54class ChildSchedulerStubFUZZ : public ChildSchedulerStub {
55public:
56    explicit ChildSchedulerStubFUZZ() {};
57    virtual ~ ChildSchedulerStubFUZZ() {};
58    int OnRemoteRequest(
59        uint32_t code, MessageParcel &data, MessageParcel &reply, MessageOption &option) override{ return 0; };
60    bool ScheduleLoadChild() override{ return true; };
61    bool ScheduleExitProcessSafely() override{ return true; };
62    bool ScheduleRunNativeProc(const sptr<IRemoteObject> &mainProcessCb) override{ return true; };
63};
64
65sptr<Token> GetFuzzAbilityToken()
66{
67    sptr<Token> token = nullptr;
68    AbilityRequest abilityRequest;
69    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
70    abilityRequest.abilityInfo.name = "MainAbility";
71    abilityRequest.abilityInfo.type = AbilityType::DATA;
72    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
73    if (abilityRecord) {
74        token = abilityRecord->GetToken();
75    }
76    return token;
77}
78
79bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
80{
81    uint32_t code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_LOAD_JS);
82    MessageParcel parcel;
83    parcel.WriteInterfaceToken(CHILD_SCHEDULER_TOKEN);
84    parcel.WriteBuffer(data, size);
85    parcel.RewindRead(0);
86    MessageParcel reply;
87    MessageOption option;
88    std::shared_ptr<ChildSchedulerStub> abms = std::make_shared<ChildSchedulerStubFUZZ>();
89    abms->OnRemoteRequest(code, parcel, reply, option);
90    code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_EXIT_PROCESS_SAFELY);
91    abms->OnRemoteRequest(code, parcel, reply, option);
92    code = static_cast<uint32_t>(IChildScheduler::Message::SCHEDULE_RUN_NATIVE_PROC);
93    abms->OnRemoteRequest(code, parcel, reply, option);
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        std::cout << "invalid data" << std::endl;
104        return 0;
105    }
106
107    /* Validate the length of size */
108    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
109        return 0;
110    }
111
112    char* ch = (char*)malloc(size + 1);
113    if (ch == nullptr) {
114        std::cout << "malloc failed." << std::endl;
115        return 0;
116    }
117
118    (void)memset_s(ch, size + 1, 0x00, size + 1);
119    if (memcpy_s(ch, size + 1, data, size) != EOK) {
120        std::cout << "copy failed." << std::endl;
121        free(ch);
122        ch = nullptr;
123        return 0;
124    }
125
126    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
127    free(ch);
128    ch = nullptr;
129    return 0;
130}
131
132