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 "getmissionidbytoken_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "ability_manager_client.h"
22#include "ability_record.h"
23#include "securec.h"
24
25using namespace OHOS::AAFwk;
26using namespace OHOS::AppExecFwk;
27
28namespace OHOS {
29namespace {
30constexpr size_t FOO_MAX_LEN = 1024;
31constexpr size_t U32_AT_SIZE = 4;
32}
33sptr<Token> GetFuzzAbilityToken()
34{
35    sptr<Token> token = nullptr;
36    AbilityRequest abilityRequest;
37    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
38    abilityRequest.abilityInfo.name = "MainAbility";
39    abilityRequest.abilityInfo.type = AbilityType::DATA;
40    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
41    if (abilityRecord) {
42        token = abilityRecord->GetToken();
43    }
44
45    return token;
46}
47uint32_t GetU32Data(const char* ptr)
48{
49    // convert fuzz input data to an integer
50    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
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    if (!token) {
62        std::cout << "Get ability token failed." << std::endl;
63        return false;
64    }
65
66    int32_t missionId = static_cast<int32_t>(GetU32Data(data));
67    if (abilitymgr->GetMissionIdByToken(token, missionId) != 0) {
68        return false;
69    }
70
71    return true;
72}
73}
74
75/* Fuzzer entry point */
76extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77{
78    /* Run your code on data */
79    if (data == nullptr) {
80        std::cout << "invalid data" << std::endl;
81        return 0;
82    }
83
84    /* Validate the length of size */
85    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
86        return 0;
87    }
88
89    char* ch = (char*)malloc(size + 1);
90    if (ch == nullptr) {
91        std::cout << "malloc failed." << std::endl;
92        return 0;
93    }
94
95    (void)memset_s(ch, size + 1, 0x00, size + 1);
96    if (memcpy_s(ch, size, data, size) != EOK) {
97        std::cout << "copy failed." << std::endl;
98        free(ch);
99        ch = nullptr;
100        return 0;
101    }
102
103    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
104    free(ch);
105    ch = nullptr;
106    return 0;
107}
108
109