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 FOO_MAX_LEN = 1024;
30 constexpr size_t U32_AT_SIZE = 4;
31 }
GetU32Data(const char * ptr)32 uint32_t GetU32Data(const char* ptr)
33 {
34 // convert fuzz input data to an integer
35 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
36 }
GetFuzzAbilityToken()37 sptr<Token> GetFuzzAbilityToken()
38 {
39 sptr<Token> token = nullptr;
40
41 AbilityRequest abilityRequest;
42 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
43 abilityRequest.abilityInfo.name = "MainAbility";
44 abilityRequest.abilityInfo.type = AbilityType::DATA;
45 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
46 if (abilityRecord) {
47 token = abilityRecord->GetToken();
48 }
49
50 return token;
51 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)52 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
53 {
54 auto abilitymgr = AbilityManagerClient::GetInstance();
55 if (!abilitymgr) {
56 return false;
57 }
58
59 // get token and connectCallback
60 sptr<IRemoteObject> token = GetFuzzAbilityToken();
61 uint32_t flag = GetU32Data(data);
62 if (!token) {
63 std::cout << "Get ability token failed." << std::endl;
64 return false;
65 }
66
67 if (abilitymgr->DoAbilityBackground(token, flag) != 0) {
68 return false;
69 }
70 return true;
71 }
72 }
73
74 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)75 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
76 {
77 /* Run your code on data */
78 if (data == nullptr) {
79 std::cout << "invalid data" << std::endl;
80 return 0;
81 }
82
83 /* Validate the length of size */
84 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
85 return 0;
86 }
87
88 char* ch = static_cast<char*>(malloc(size + 1));
89 if (ch == nullptr) {
90 std::cout << "malloc failed." << std::endl;
91 return 0;
92 }
93
94 (void)memset_s(ch, size + 1, 0x00, size + 1);
95 if (memcpy_s(ch, size, data, size) != EOK) {
96 std::cout << "copy failed." << std::endl;
97 free(ch);
98 ch = nullptr;
99 return 0;
100 }
101
102 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
103 free(ch);
104 ch = nullptr;
105 return 0;
106 }