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 "clearupapplicationdata_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "app_mgr_client.h"
23 #include "securec.h"
24
25 using namespace OHOS::AAFwk;
26 using namespace OHOS::AppExecFwk;
27
28 namespace OHOS {
29 namespace {
30 constexpr int INPUT_ZERO = 0;
31 constexpr int INPUT_ONE = 1;
32 constexpr int INPUT_THREE = 3;
33 constexpr size_t FOO_MAX_LEN = 1024;
34 constexpr size_t U32_AT_SIZE = 4;
35 constexpr uint8_t ENABLE = 2;
36 constexpr size_t OFFSET_ZERO = 24;
37 constexpr size_t OFFSET_ONE = 16;
38 constexpr size_t OFFSET_TWO = 8;
39 }
GetU32Data(const char * ptr)40 uint32_t GetU32Data(const char* ptr)
41 {
42 // convert fuzz input data to an integer
43 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
44 ptr[INPUT_THREE];
45 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)46 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
47 {
48 // fuzz for AppMgrClient
49 std::shared_ptr<AppMgrClient> appMgrClient = std::make_shared<AppMgrClient>();
50 if (!appMgrClient) {
51 return false;
52 }
53
54 std::string bundleName(data, size);
55 int32_t appCloneIndex = static_cast<int32_t>(GetU32Data(data));
56 appMgrClient->ClearUpApplicationData(bundleName, appCloneIndex);
57
58 return true;
59 }
60 }
61
62 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)63 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
64 {
65 /* Run your code on data */
66 if (data == nullptr) {
67 std::cout << "invalid data" << std::endl;
68 return 0;
69 }
70
71 /* Validate the length of size */
72 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
73 return 0;
74 }
75
76 char* ch = static_cast<char*>(malloc(size + 1));
77 if (ch == nullptr) {
78 std::cout << "malloc failed." << std::endl;
79 return 0;
80 }
81
82 (void)memset_s(ch, size + 1, 0x00, size + 1);
83 if (memcpy_s(ch, size, data, size) != EOK) {
84 std::cout << "copy failed." << std::endl;
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }
89
90 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
91 free(ch);
92 ch = nullptr;
93 return 0;
94 }
95
96