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 "killprocessesbyuserid_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "ability_record.h"
22#include "app_mgr_client.h"
23#include "parcel.h"
24#include "securec.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}
34uint32_t GetU32Data(const char* ptr)
35{
36    // convert fuzz input data to an integer
37    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
38}
39bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
40{
41    std::shared_ptr<AppMgrClient> appMgrClient = std::make_shared<AppMgrClient>();
42    if (!appMgrClient) {
43        return false;
44    }
45
46    int32_t userId = static_cast<int32_t>(GetU32Data(data));
47
48    if (appMgrClient->KillProcessesByUserId(userId) != AppMgrResultCode::RESULT_OK) {
49        return false;
50    }
51
52    return true;
53}
54}
55
56/* Fuzzer entry point */
57extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
58{
59    /* Run your code on data */
60    if (data == nullptr) {
61        std::cout << "invalid data" << std::endl;
62        return 0;
63    }
64
65    /* Validate the length of size */
66    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
67        return 0;
68    }
69
70    char* ch = (char*)malloc(size + 1);
71    if (ch == nullptr) {
72        std::cout << "malloc failed." << std::endl;
73        return 0;
74    }
75
76    (void)memset_s(ch, size + 1, 0x00, size + 1);
77    if (memcpy_s(ch, size, data, size) != EOK) {
78        std::cout << "copy failed." << std::endl;
79        free(ch);
80        ch = nullptr;
81        return 0;
82    }
83
84    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
85    free(ch);
86    ch = nullptr;
87    return 0;
88}
89
90