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 "stopuser_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "stop_user_callback.h"
23 #include "securec.h"
24
25 using namespace OHOS::AAFwk;
26 using namespace OHOS::AppExecFwk;
27
28 namespace OHOS {
29 namespace {
30 constexpr size_t FOO_MAX_LEN = 1024;
31 constexpr size_t U32_AT_SIZE = 4;
32 }
33 class StopUserCallbackFuzz : public IStopUserCallback {
34 public:
StopUserCallbackFuzz()35 explicit StopUserCallbackFuzz() {};
~StopUserCallbackFuzz()36 virtual ~StopUserCallbackFuzz() {};
OnStopUserDone(int userId,int errcode)37 void OnStopUserDone(int userId, int errcode) override {};
38 };
GetU32Data(const char * ptr)39 uint32_t GetU32Data(const char* ptr)
40 {
41 // convert fuzz input data to an integer
42 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
43 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)44 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
45 {
46 auto abilitymgr = AbilityManagerClient::GetInstance();
47 if (!abilitymgr) {
48 return false;
49 }
50
51 int accountId = static_cast<int>(GetU32Data(data));
52 sptr<StopUserCallbackFuzz> callback;
53 if (callback) {
54 abilitymgr->StopUser(accountId, callback);
55 }
56
57 return true;
58 }
59 }
60
61 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)62 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
63 {
64 /* Run your code on data */
65 if (data == nullptr) {
66 std::cout << "invalid data" << std::endl;
67 return 0;
68 }
69
70 /* Validate the length of size */
71 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
72 return 0;
73 }
74
75 char* ch = (char *)malloc(size + 1);
76 if (ch == nullptr) {
77 std::cout << "malloc failed." << std::endl;
78 return 0;
79 }
80
81 (void)memset_s(ch, size + 1, 0x00, size + 1);
82 if (memcpy_s(ch, size, data, size) != EOK) {
83 std::cout << "copy failed." << std::endl;
84 free(ch);
85 ch = nullptr;
86 return 0;
87 }
88
89 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
90 free(ch);
91 ch = nullptr;
92 return 0;
93 }
94
95