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 U32_AT_SIZE = 4;
30 }
GetFuzzAbilityToken()31 sptr<Token> GetFuzzAbilityToken()
32 {
33 sptr<Token> token = nullptr;
34
35 AbilityRequest abilityRequest;
36 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
37 abilityRequest.abilityInfo.name = "MainAbility";
38 abilityRequest.abilityInfo.type = AbilityType::DATA;
39 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
40 if (abilityRecord) {
41 token = abilityRecord->GetToken();
42 }
43
44 return token;
45 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)46 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
47 {
48 auto abilitymgr = AbilityManagerClient::GetInstance();
49 int resultCode = 0;
50 if (!abilitymgr) {
51 return false;
52 }
53
54 // get token
55 sptr<IRemoteObject> token = GetFuzzAbilityToken();
56 if (!token) {
57 std::cout << "Get ability token failed." << std::endl;
58 return false;
59 }
60
61 // fuzz for want
62 Parcel wantParcel;
63 Want* resultWant = nullptr;
64 if (wantParcel.WriteBuffer(data, size)) {
65 resultWant = Want::Unmarshalling(wantParcel);
66 if (resultWant) {
67 ErrCode result = abilitymgr->CloseAbility(token, resultCode, resultWant);
68 if (result != 0) {
69 return false;
70 }
71 }
72 }
73 if (resultWant) {
74 delete resultWant;
75 resultWant = nullptr;
76 }
77 return true;
78 }
79 }
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
83 {
84 /* Run your code on data */
85 if (data == nullptr) {
86 std::cout << "invalid data" << std::endl;
87 return 0;
88 }
89
90 /* Validate the length of size */
91 if (size < OHOS::U32_AT_SIZE) {
92 return 0;
93 }
94
95 char* ch = static_cast<char*>(malloc(size + 1));
96 if (ch == nullptr) {
97 std::cout << "malloc failed." << std::endl;
98 return 0;
99 }
100
101 (void)memset_s(ch, size + 1, 0x00, size + 1);
102 if (memcpy_s(ch, size, data, size) != EOK) {
103 std::cout << "copy failed." << std::endl;
104 free(ch);
105 ch = nullptr;
106 return 0;
107 }
108
109 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
110 free(ch);
111 ch = nullptr;
112 return 0;
113 }
114
115