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 U32_AT_SIZE = 4;
33 }
GetFuzzAbilityToken()34 sptr<Token> GetFuzzAbilityToken()
35 {
36 sptr<Token> token = nullptr;
37
38 AbilityRequest abilityRequest;
39 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
40 abilityRequest.abilityInfo.name = "MainAbility";
41 abilityRequest.abilityInfo.type = AbilityType::DATA;
42 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
43 if (abilityRecord) {
44 token = abilityRecord->GetToken();
45 }
46
47 return token;
48 }
49
DoSomethingInterestingWithMyAPI(const char * data,size_t size)50 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
51 {
52 // get token
53 sptr<Token> token = GetFuzzAbilityToken();
54 if (!token) {
55 std::cout << "Get ability token failed." << std::endl;
56 return false;
57 }
58
59 // fuzz for wantSenderInfo
60 Parcel wantSenderInfoParcel;
61 WantSenderInfo* wantSenderInfo = nullptr;
62 sptr<IWantSender> sender = nullptr;
63 if (wantSenderInfoParcel.WriteBuffer(data, size)) {
64 wantSenderInfo = WantSenderInfo::Unmarshalling(wantSenderInfoParcel);
65 if (wantSenderInfo) {
66 WantAgentClient::GetInstance().GetWantSender(*wantSenderInfo, token, sender);
67 }
68 }
69
70 // fuzz for senderInfo
71 Parcel senderInfoParcel;
72 SenderInfo* senderInfo = nullptr;
73 if (senderInfoParcel.WriteBuffer(data, size)) {
74 senderInfo = SenderInfo::Unmarshalling(senderInfoParcel);
75 if (sender && senderInfo) {
76 WantAgentClient::GetInstance().SendWantSender(sender, *senderInfo);
77 }
78 }
79
80 if (senderInfo) {
81 delete senderInfo;
82 senderInfo = nullptr;
83 }
84 if (wantSenderInfo) {
85 delete wantSenderInfo;
86 wantSenderInfo = nullptr;
87 }
88
89 return true;
90 }
91 }
92
93 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)94 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
95 {
96 /* Run your code on data */
97 if (data == nullptr) {
98 std::cout << "invalid data" << std::endl;
99 return 0;
100 }
101
102 /* Validate the length of size */
103 if (size < OHOS::U32_AT_SIZE) {
104 return 0;
105 }
106
107 char* ch = static_cast<char*>(malloc(size + 1));
108 if (ch == nullptr) {
109 std::cout << "malloc failed." << std::endl;
110 return 0;
111 }
112
113 (void)memset_s(ch, size + 1, 0x00, size + 1);
114 if (memcpy_s(ch, size, data, size) != EOK) {
115 std::cout << "copy failed." << std::endl;
116 free(ch);
117 ch = nullptr;
118 return 0;
119 }
120
121 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
122 free(ch);
123 ch = nullptr;
124 return 0;
125 }
126
127