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 "loadability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_record.h"
22 #include "app_mgr_client.h"
23 #include "parcel.h"
24 #include "securec.h"
25
26 using namespace OHOS::AAFwk;
27 using namespace OHOS::AppExecFwk;
28
29 namespace OHOS {
30 namespace {
31 constexpr size_t FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
33 }
34
GetFuzzAbilityToken()35 sptr<Token> GetFuzzAbilityToken()
36 {
37 sptr<Token> token = nullptr;
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 return token;
47 }
48
DoSomethingInterestingWithMyAPI(const char * data,size_t size)49 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
50 {
51 AppMgrClient* appMgrClient = new AppMgrClient();
52 if (!appMgrClient) {
53 return false;
54 }
55
56 sptr<IRemoteObject> token = GetFuzzAbilityToken();
57 if (!token) {
58 std::cout << "Get ability token failed." << std::endl;
59 return false;
60 }
61 sptr<IRemoteObject> preToken = GetFuzzAbilityToken();
62 if (!preToken) {
63 std::cout << "Get ability preToken failed." << std::endl;
64 return false;
65 }
66 AbilityInfo abilityInfo;
67 ApplicationInfo appInfo;
68
69 // fuzz for want
70 Parcel wantParcel;
71 Want* want = nullptr;
72 if (wantParcel.WriteBuffer(data, size)) {
73 want = Want::Unmarshalling(wantParcel);
74 if (want) {
75 appMgrClient->LoadAbility(token, preToken, abilityInfo, appInfo, *want);
76 }
77 }
78
79 delete appMgrClient;
80 appMgrClient = nullptr;
81
82 return true;
83 }
84 }
85
86 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)87 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
88 {
89 /* Run your code on data */
90 if (data == nullptr) {
91 std::cout << "invalid data" << std::endl;
92 return 0;
93 }
94
95 /* Validate the length of size */
96 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
97 return 0;
98 }
99
100 char* ch = (char *)malloc(size + 1);
101 if (ch == nullptr) {
102 std::cout << "malloc failed." << std::endl;
103 return 0;
104 }
105
106 (void)memset_s(ch, size + 1, 0x00, size + 1);
107 if (memcpy_s(ch, size, data, size) != EOK) {
108 std::cout << "copy failed." << std::endl;
109 free(ch);
110 ch = nullptr;
111 return 0;
112 }
113
114 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
115 free(ch);
116 ch = nullptr;
117 return 0;
118 }
119
120