1 /*
2 * Copyright (c) 2022 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 "startability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "ability_record.h"
23 #include "parcel.h"
24 #include "securec.h"
25 #include "want.h"
26
27 using namespace OHOS::AAFwk;
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 namespace {
32 constexpr size_t FOO_MAX_LEN = 1024;
33 constexpr size_t U32_AT_SIZE = 4;
34 }
GetFuzzAbilityToken()35 sptr<Token> GetFuzzAbilityToken()
36 {
37 sptr<Token> token = nullptr;
38
39 AbilityRequest abilityRequest;
40 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
41 abilityRequest.abilityInfo.name = "MainAbility";
42 abilityRequest.abilityInfo.type = AbilityType::DATA;
43 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
44 if (abilityRecord) {
45 token = abilityRecord->GetToken();
46 }
47
48 return token;
49 }
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 if (!token) {
61 std::cout << "Get ability token failed." << std::endl;
62 return false;
63 }
64
65 // fuzz for want
66 Parcel wantParcel;
67 Want *want = nullptr;
68 if (wantParcel.WriteBuffer(data, size)) {
69 want = Want::Unmarshalling(wantParcel);
70 if (want) {
71 abilityMgr->StartAbility(*want);
72 }
73 }
74
75 // fuzz for abilitysetting
76 Parcel settingParcel;
77 AbilityStartSetting *setting = nullptr;
78 if (settingParcel.WriteBuffer(data, size)) {
79 setting = AbilityStartSetting::Unmarshalling(settingParcel);
80 if (want && setting) {
81 abilityMgr->StartAbility(*want, *setting, token);
82 }
83 }
84
85 // fuzz for startoptions
86 Parcel optionParcel;
87 StartOptions *options = nullptr;
88 if (optionParcel.WriteBuffer(data, size)) {
89 options = StartOptions::Unmarshalling(optionParcel);
90 if (want && options) {
91 abilityMgr->StartAbility(*want, *options, token);
92 }
93 }
94
95 if (want) {
96 delete want;
97 want = nullptr;
98 }
99 if (setting) {
100 delete setting;
101 setting = nullptr;
102 }
103 if (options) {
104 delete options;
105 options = nullptr;
106 }
107
108 return true;
109 }
110 }
111
112 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)113 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
114 {
115 /* Run your code on data */
116 if (data == nullptr) {
117 std::cout << "invalid data" << std::endl;
118 return 0;
119 }
120
121 /* Validate the length of size */
122 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
123 return 0;
124 }
125
126 char* ch = (char *)malloc(size + 1);
127 if (ch == nullptr) {
128 std::cout << "malloc failed." << std::endl;
129 return 0;
130 }
131
132 (void)memset_s(ch, size + 1, 0x00, size + 1);
133 if (memcpy_s(ch, size, data, size) != EOK) {
134 std::cout << "copy failed." << std::endl;
135 free(ch);
136 ch = nullptr;
137 return 0;
138 }
139
140 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
141 free(ch);
142 ch = nullptr;
143 return 0;
144 }
145
146