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 "getappmemorysize_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_interface.h"
22 #include "iservice_registry.h"
23 #include "sa_mgr_client.h"
24 #include "securec.h"
25 #include "system_ability_definition.h"
26
27 using namespace OHOS::AAFwk;
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 namespace {
32 constexpr size_t U32_AT_SIZE = 4;
33 } // namespace
34
DoSomethingInterestingWithMyAPI(const char * data,size_t size)35 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
36 {
37 (void)data;
38 auto saMgr = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
39 if (saMgr == nullptr) {
40 return false;
41 }
42
43 auto abilityObject = saMgr->GetSystemAbility(ABILITY_MGR_SERVICE_ID);
44 if (abilityObject == nullptr) {
45 return false;
46 }
47
48 auto abilitymgr = iface_cast<AAFwk::IAbilityManager>(abilityObject);
49 if (abilitymgr == nullptr) {
50 return false;
51 }
52
53 if (abilitymgr->GetAppMemorySize()) {
54 return false;
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::U32_AT_SIZE) {
72 return 0;
73 }
74
75 char* ch = static_cast<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