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 "doabilitybackground_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "ability_record.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 }
GetFuzzAbilityToken()36 sptr<Token> GetFuzzAbilityToken()
37 {
38 sptr<Token> token = nullptr;
39
40 AbilityRequest abilityRequest;
41 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
42 abilityRequest.abilityInfo.name = "MainAbility";
43 abilityRequest.abilityInfo.type = AbilityType::DATA;
44 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
45 if (abilityRecord) {
46 token = abilityRecord->GetToken();
47 }
48
49 return token;
50 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)51 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
52 {
53 auto abilitymgr = AbilityManagerClient::GetInstance();
54 if (!abilitymgr) {
55 return false;
56 }
57
58 // get token and connectCallback
59 sptr<IRemoteObject> token = GetFuzzAbilityToken();
60 uint32_t flag = GetU32Data(data);
61 if (!token) {
62 std::cout << "Get ability token failed." << std::endl;
63 return false;
64 }
65
66 if (abilitymgr->DoAbilityBackground(token, flag) != 0) {
67 return false;
68 }
69 return true;
70 }
71 }
72
73 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)74 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
75 {
76 /* Run your code on data */
77 if (data == nullptr) {
78 std::cout << "invalid data" << std::endl;
79 return 0;
80 }
81
82 /* Validate the length of size */
83 if (size < OHOS::U32_AT_SIZE) {
84 return 0;
85 }
86
87 char* ch = static_cast<char*>(malloc(size + 1));
88 if (ch == nullptr) {
89 std::cout << "malloc failed." << std::endl;
90 return 0;
91 }
92
93 (void)memset_s(ch, size + 1, 0x00, size + 1);
94 if (memcpy_s(ch, size, data, size) != EOK) {
95 std::cout << "copy failed." << std::endl;
96 free(ch);
97 ch = nullptr;
98 return 0;
99 }
100
101 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
102 free(ch);
103 ch = nullptr;
104 return 0;
105 }