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 "getwantsender_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 "sender_info.h"
25 #include "want_sender_info.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 std::cout << "Get ability manager client failed." << std::endl;
56 return false;
57 }
58
59 // get token
60 sptr<Token> token = GetFuzzAbilityToken();
61 if (!token) {
62 std::cout << "Get ability token failed." << std::endl;
63 return false;
64 }
65
66 // fuzz for wantSenderInfo
67 Parcel wantSenderInfoParcel;
68 WantSenderInfo *wantSenderInfo = nullptr;
69 sptr<IWantSender> sender = nullptr;
70 if (wantSenderInfoParcel.WriteBuffer(data, size)) {
71 wantSenderInfo = WantSenderInfo::Unmarshalling(wantSenderInfoParcel);
72 if (wantSenderInfo) {
73 sender = abilityMgr->GetWantSender(*wantSenderInfo, token);
74 }
75 }
76
77 // fuzz for senderInfo
78 Parcel senderInfoParcel;
79 SenderInfo *senderInfo = nullptr;
80 if (senderInfoParcel.WriteBuffer(data, size)) {
81 senderInfo = SenderInfo::Unmarshalling(senderInfoParcel);
82 if (sender && senderInfo) {
83 abilityMgr->SendWantSender(sender, *senderInfo);
84 }
85 }
86
87 if (senderInfo) {
88 delete senderInfo;
89 senderInfo = nullptr;
90 }
91 if (wantSenderInfo) {
92 delete wantSenderInfo;
93 wantSenderInfo = nullptr;
94 }
95
96 return true;
97 }
98 }
99
100 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)101 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
102 {
103 /* Run your code on data */
104 if (data == nullptr) {
105 std::cout << "invalid data" << std::endl;
106 return 0;
107 }
108
109 /* Validate the length of size */
110 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
111 return 0;
112 }
113
114 char* ch = (char *)malloc(size + 1);
115 if (ch == nullptr) {
116 std::cout << "malloc failed." << std::endl;
117 return 0;
118 }
119
120 (void)memset_s(ch, size + 1, 0x00, size + 1);
121 if (memcpy_s(ch, size, data, size) != EOK) {
122 std::cout << "copy failed." << std::endl;
123 free(ch);
124 ch = nullptr;
125 return 0;
126 }
127
128 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
129 free(ch);
130 ch = nullptr;
131 return 0;
132 }
133
134