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 "doabilitybackground_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "ability_manager_client.h"
22#include "ability_record.h"
23
24using namespace OHOS::AAFwk;
25using namespace OHOS::AppExecFwk;
26
27namespace OHOS {
28namespace {
29constexpr size_t FOO_MAX_LEN = 1024;
30constexpr size_t U32_AT_SIZE = 4;
31}
32uint32_t GetU32Data(const char* ptr)
33{
34    // convert fuzz input data to an integer
35    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
36}
37sptr<Token> GetFuzzAbilityToken()
38{
39    sptr<Token> token = nullptr;
40
41    AbilityRequest abilityRequest;
42    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
43    abilityRequest.abilityInfo.name = "MainAbility";
44    abilityRequest.abilityInfo.type = AbilityType::DATA;
45    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
46    if (abilityRecord) {
47        token = abilityRecord->GetToken();
48    }
49
50    return token;
51}
52bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
53{
54    auto abilitymgr = AbilityManagerClient::GetInstance();
55    if (!abilitymgr) {
56        return false;
57    }
58
59    // get token and connectCallback
60    sptr<IRemoteObject> token = GetFuzzAbilityToken();
61    uint32_t flag = GetU32Data(data);
62    if (!token) {
63        std::cout << "Get ability token failed." << std::endl;
64        return false;
65    }
66
67    if (abilitymgr->DoAbilityBackground(token, flag) != 0) {
68        return false;
69    }
70    return true;
71}
72}
73
74/* Fuzzer entry point */
75extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
76{
77    /* Run your code on data */
78    if (data == nullptr) {
79        std::cout << "invalid data" << std::endl;
80        return 0;
81    }
82
83    /* Validate the length of size */
84    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
85        return 0;
86    }
87
88    char* ch = (char*)malloc(size + 1);
89    if (ch == nullptr) {
90        std::cout << "malloc failed." << std::endl;
91        return 0;
92    }
93
94    (void)memset_s(ch, size + 1, 0x00, size + 1);
95    if (memcpy_s(ch, size, data, size) != EOK) {
96        std::cout << "copy failed." << std::endl;
97        free(ch);
98        ch = nullptr;
99        return 0;
100    }
101
102    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
103    free(ch);
104    ch = nullptr;
105    return 0;
106}