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 "acquiredataability_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "ability_manager_client.h"
22#include "ability_record.h"
23#include "parcel.h"
24#include "uri.h"
25
26using namespace OHOS::AAFwk;
27using namespace OHOS::AppExecFwk;
28
29namespace OHOS {
30namespace {
31constexpr size_t FOO_MAX_LEN = 1024;
32constexpr size_t U32_AT_SIZE = 4;
33}
34sptr<Token> GetFuzzAbilityToken()
35{
36    sptr<Token> token = nullptr;
37
38    AbilityRequest abilityRequest;
39    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
40    abilityRequest.abilityInfo.name = "MainAbility";
41    abilityRequest.abilityInfo.type = AbilityType::DATA;
42    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
43    if (abilityRecord) {
44        token = abilityRecord->GetToken();
45    }
46
47    return token;
48}
49
50bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
51{
52    auto abilityMgr = AbilityManagerClient::GetInstance();
53    if (!abilityMgr) {
54        std::cout << "Get ability manager client failed." << std::endl;
55        return false;
56    }
57
58    // get token
59    sptr<IRemoteObject> token = GetFuzzAbilityToken();
60    if (!token) {
61        std::cout << "Get ability token failed." << std::endl;
62        return false;
63    }
64
65    // fuzz for uri
66    Parcel uriParcel;
67    Uri* uri = nullptr;
68    if (uriParcel.WriteBuffer(data, size)) {
69        uri = Uri::Unmarshalling(uriParcel);
70        if (uri) {
71            abilityMgr->AcquireDataAbility(*uri, true, token);
72            abilityMgr->AcquireDataAbility(*uri, false, token);
73        }
74    }
75
76    if (uri) {
77        delete uri;
78        uri = nullptr;
79    }
80
81    return true;
82}
83}
84
85/* Fuzzer entry point */
86extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
87{
88    /* Run your code on data */
89    if (data == nullptr) {
90        std::cout << "invalid data" << std::endl;
91        return 0;
92    }
93
94    /* Validate the length of size */
95    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
96        return 0;
97    }
98
99    char* ch = (char*)malloc(size + 1);
100    if (ch == nullptr) {
101        std::cout << "malloc failed." << std::endl;
102        return 0;
103    }
104
105    (void)memset_s(ch, size + 1, 0x00, size + 1);
106    if (memcpy_s(ch, size, data, size) != EOK) {
107        std::cout << "copy failed." << std::endl;
108        free(ch);
109        ch = nullptr;
110        return 0;
111    }
112
113    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
114    free(ch);
115    ch = nullptr;
116    return 0;
117}
118
119