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 "abilitybackgroundconnection_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "ability_background_connection.h"
22
23#include "securec.h"
24
25using namespace OHOS::AAFwk;
26using namespace OHOS::AppExecFwk;
27
28namespace OHOS {
29namespace {
30constexpr int INPUT_ZERO = 0;
31constexpr int INPUT_ONE = 1;
32constexpr int INPUT_THREE = 3;
33constexpr size_t FOO_MAX_LEN = 1024;
34constexpr uint8_t ENABLE = 2;
35constexpr size_t U32_AT_SIZE = 4;
36constexpr size_t OFFSET_ZERO = 24;
37constexpr size_t OFFSET_ONE = 16;
38constexpr size_t OFFSET_TWO = 8;
39}
40
41uint32_t GetU32Data(const char* ptr)
42{
43    // convert fuzz input data to an integer
44    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
45        ptr[INPUT_THREE];
46}
47
48bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
49{
50    AppExecFwk::ElementName element;
51    sptr<IRemoteObject> remoteObject;
52    int intParam = static_cast<int>(GetU32Data(data));
53    auto abilityBackgroundConnection = std::make_shared<AbilityBackgroundConnection>();
54    abilityBackgroundConnection->OnAbilityConnectDone(element, remoteObject, intParam);
55    abilityBackgroundConnection->OnAbilityDisconnectDone(element, intParam);
56    return true;
57}
58}
59
60/* Fuzzer entry point */
61extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
62{
63    /* Run your code on data */
64    if (data == nullptr) {
65        std::cout << "invalid data" << std::endl;
66        return 0;
67    }
68
69    /* Validate the length of size */
70    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
71        return 0;
72    }
73
74    char* ch = (char*)malloc(size + 1);
75    if (ch == nullptr) {
76        std::cout << "malloc failed." << std::endl;
77        return 0;
78    }
79
80    (void)memset_s(ch, size + 1, 0x00, size + 1);
81    if (memcpy_s(ch, size + 1, data, size) != EOK) {
82        std::cout << "copy failed." << std::endl;
83        free(ch);
84        ch = nullptr;
85        return 0;
86    }
87
88    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
89    free(ch);
90    ch = nullptr;
91    return 0;
92}
93
94