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 "abilityappmgrrenderstateobservermanager_fuzzer.h"
17#include "ability_record.h"
18
19#include <cstddef>
20#include <cstdint>
21
22#define private public
23#include "render_state_observer_manager.h"
24#include "hilog_tag_wrapper.h"
25#include "iremote_object.h"
26#undef private
27#include "render_state_observer_proxy.h"
28#include "render_state_observer_stub.h"
29
30#include "securec.h"
31
32
33using namespace OHOS::AAFwk;
34using namespace OHOS::AppExecFwk;
35
36namespace OHOS {
37namespace {
38constexpr int INPUT_ZERO = 0;
39constexpr int INPUT_ONE = 1;
40constexpr int INPUT_TWO = 2;
41constexpr int INPUT_THREE = 3;
42constexpr size_t FOO_MAX_LEN = 1024;
43constexpr size_t U32_AT_SIZE = 4;
44constexpr size_t OFFSET_ZERO = 24;
45constexpr size_t OFFSET_ONE = 16;
46constexpr size_t OFFSET_TWO = 8;
47constexpr uint8_t ENABLE = 2;
48}
49uint32_t GetU32Data(const char* ptr)
50{
51    // convert fuzz input data to an integer
52    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
53        ptr[INPUT_THREE];
54}
55
56sptr<Token> GetFuzzAbilityToken()
57{
58    sptr<Token> token = nullptr;
59    AbilityRequest abilityRequest;
60    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
61    abilityRequest.abilityInfo.name = "MainAbility";
62    abilityRequest.abilityInfo.type = AbilityType::DATA;
63    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
64    if (abilityRecord) {
65        token = abilityRecord->GetToken();
66    }
67    return token;
68}
69
70bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
71{
72    std::shared_ptr<RenderStateObserverManager> manager = std::make_shared<RenderStateObserverManager>();
73    manager->Init();
74    sptr<IRenderStateObserver> observer;
75    manager->RegisterRenderStateObserver(observer);
76    manager->Init();
77    sptr<IRenderStateObserver> observers;
78    manager->UnregisterRenderStateObserver(observers);
79    manager->Init();
80    std::shared_ptr<RenderRecord> renderRecord;
81    int32_t state = static_cast<int32_t>(GetU32Data(data));
82    manager->OnRenderStateChanged(renderRecord, state);
83    return true;
84}
85}
86
87/* Fuzzer entry point */
88extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
89{
90    /* Run your code on data */
91    if (data == nullptr) {
92        std::cout << "invalid data" << std::endl;
93        return 0;
94    }
95
96    /* Validate the length of size */
97    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
98        return 0;
99    }
100
101    char* ch = (char*)malloc(size + 1);
102    if (ch == nullptr) {
103        std::cout << "malloc failed." << std::endl;
104        return 0;
105    }
106
107    (void)memset_s(ch, size + 1, 0x00, size + 1);
108    if (memcpy_s(ch, size + 1, data, size) != EOK) {
109        std::cout << "copy failed." << std::endl;
110        free(ch);
111        ch = nullptr;
112        return 0;
113    }
114
115    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
116    free(ch);
117    ch = nullptr;
118    return 0;
119}
120
121