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 "stopuser_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "securec.h"
23
24 using namespace OHOS::AAFwk;
25 using namespace OHOS::AppExecFwk;
26
27 namespace OHOS {
28 namespace {
29 constexpr size_t U32_AT_SIZE = 4;
30 }
GetU32Data(const char * ptr)31 uint32_t GetU32Data(const char* ptr)
32 {
33 // convert fuzz input data to an integer
34 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
35 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)36 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
37 {
38 auto abilitymgr = AbilityManagerClient::GetInstance();
39 if (!abilitymgr) {
40 return false;
41 }
42
43 int accountId = static_cast<int>(GetU32Data(data));
44 sptr<IUserCallback> callback;
45 if (callback) {
46 abilitymgr->StopUser(accountId, callback);
47 }
48 if (callback) {
49 delete callback;
50 callback = nullptr;
51 }
52 return true;
53 }
54 }
55
56 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)57 extern "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::U32_AT_SIZE) {
67 return 0;
68 }
69
70 char* ch = static_cast<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 }