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 "getwantsender_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_record.h"
22 #include "parcel.h"
23 #include "sender_info.h"
24 #include "want_agent_client.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 // get token
54 sptr<Token> token = GetFuzzAbilityToken();
55 if (!token) {
56 std::cout << "Get ability token failed." << std::endl;
57 return false;
58 }
59
60 // fuzz for wantSenderInfo
61 Parcel wantSenderInfoParcel;
62 WantSenderInfo* wantSenderInfo = nullptr;
63 sptr<IWantSender> sender = nullptr;
64 if (wantSenderInfoParcel.WriteBuffer(data, size)) {
65 wantSenderInfo = WantSenderInfo::Unmarshalling(wantSenderInfoParcel);
66 if (wantSenderInfo) {
67 WantAgentClient::GetInstance().GetWantSender(*wantSenderInfo, token, sender);
68 }
69 }
70
71 // fuzz for senderInfo
72 Parcel senderInfoParcel;
73 SenderInfo* senderInfo = nullptr;
74 if (senderInfoParcel.WriteBuffer(data, size)) {
75 senderInfo = SenderInfo::Unmarshalling(senderInfoParcel);
76 if (sender && senderInfo) {
77 WantAgentClient::GetInstance().SendWantSender(sender, *senderInfo);
78 }
79 }
80
81 if (senderInfo) {
82 delete senderInfo;
83 senderInfo = nullptr;
84 }
85 if (wantSenderInfo) {
86 delete wantSenderInfo;
87 wantSenderInfo = nullptr;
88 }
89
90 return true;
91 }
92 }
93
94 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)95 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
96 {
97 /* Run your code on data */
98 if (data == nullptr) {
99 std::cout << "invalid data" << std::endl;
100 return 0;
101 }
102
103 /* Validate the length of size */
104 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
105 return 0;
106 }
107
108 char* ch = static_cast<char*>(malloc(size + 1));
109 if (ch == nullptr) {
110 std::cout << "malloc failed." << std::endl;
111 return 0;
112 }
113
114 (void)memset_s(ch, size + 1, 0x00, size + 1);
115 if (memcpy_s(ch, size, data, size) != EOK) {
116 std::cout << "copy failed." << std::endl;
117 free(ch);
118 ch = nullptr;
119 return 0;
120 }
121
122 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
123 free(ch);
124 ch = nullptr;
125 return 0;
126 }
127
128