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 "closeability_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 }
GetFuzzAbilityToken()32 sptr<Token> GetFuzzAbilityToken()
33 {
34 sptr<Token> token = nullptr;
35
36 AbilityRequest abilityRequest;
37 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
38 abilityRequest.abilityInfo.name = "MainAbility";
39 abilityRequest.abilityInfo.type = AbilityType::DATA;
40 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
41 if (abilityRecord) {
42 token = abilityRecord->GetToken();
43 }
44
45 return token;
46 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)47 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
48 {
49 auto abilitymgr = AbilityManagerClient::GetInstance();
50 int resultCode = 0;
51 if (!abilitymgr) {
52 return false;
53 }
54
55 // get token
56 sptr<IRemoteObject> token = GetFuzzAbilityToken();
57 if (!token) {
58 std::cout << "Get ability token failed." << std::endl;
59 return false;
60 }
61
62 // fuzz for want
63 Parcel wantParcel;
64 Want* resultWant = nullptr;
65 if (wantParcel.WriteBuffer(data, size)) {
66 resultWant = Want::Unmarshalling(wantParcel);
67 if (resultWant) {
68 ErrCode result = abilitymgr->CloseAbility(token, resultCode, resultWant);
69 if (result != 0) {
70 return false;
71 }
72 }
73 }
74 if (resultWant) {
75 delete resultWant;
76 resultWant = nullptr;
77 }
78 return true;
79 }
80 }
81
82 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)83 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
84 {
85 /* Run your code on data */
86 if (data == nullptr) {
87 std::cout << "invalid data" << std::endl;
88 return 0;
89 }
90
91 /* Validate the length of size */
92 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
93 return 0;
94 }
95
96 char* ch = static_cast<char*>(malloc(size + 1));
97 if (ch == nullptr) {
98 std::cout << "malloc failed." << std::endl;
99 return 0;
100 }
101
102 (void)memset_s(ch, size + 1, 0x00, size + 1);
103 if (memcpy_s(ch, size, data, size) != EOK) {
104 std::cout << "copy failed." << std::endl;
105 free(ch);
106 ch = nullptr;
107 return 0;
108 }
109
110 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
111 free(ch);
112 ch = nullptr;
113 return 0;
114 }
115
116