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 "abilityinterfacesappmanageramsmgrstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "ams_mgr_stub.h"
23 #include "ams_mgr_scheduler.h"
24 #undef private
25
26 #include "securec.h"
27 #include "parcel.h"
28 #include "ability_record.h"
29
30 using namespace OHOS::AAFwk;
31 using namespace OHOS::AppExecFwk;
32
33 namespace OHOS {
34 namespace {
35 constexpr int INPUT_ZERO = 0;
36 constexpr int INPUT_ONE = 1;
37 constexpr int INPUT_TWO = 2;
38 constexpr int INPUT_THREE = 3;
39 constexpr size_t FOO_MAX_LEN = 1024;
40 constexpr size_t U32_AT_SIZE = 4;
41 constexpr size_t OFFSET_ZERO = 24;
42 constexpr size_t OFFSET_ONE = 16;
43 constexpr size_t OFFSET_TWO = 8;
44 constexpr uint8_t ENABLE = 2;
45 }
46 const std::u16string AMSMGR_INTERFACE_TOKEN = u"ohos.appexecfwk.IAmsMgr";
GetU32Data(const char * ptr)47 uint32_t GetU32Data(const char* ptr)
48 {
49 // convert fuzz input data to an integer
50 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
51 ptr[INPUT_THREE];
52 }
53
GetFuzzAbilityToken()54 sptr<Token> GetFuzzAbilityToken()
55 {
56 sptr<Token> token = nullptr;
57 AbilityRequest abilityRequest;
58 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
59 abilityRequest.abilityInfo.name = "MainAbility";
60 abilityRequest.abilityInfo.type = AbilityType::DATA;
61 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
62 if (abilityRecord) {
63 token = abilityRecord->GetToken();
64 }
65 return token;
66 }
67
DoSomethingInterestingWithMyAPI(const char * data,size_t size)68 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
69 {
70 uint32_t code = static_cast<uint32_t>(IAmsMgr::Message::UPDATE_EXTENSION_STATE);
71 MessageParcel parcel;
72 parcel.WriteInterfaceToken(AMSMGR_INTERFACE_TOKEN);
73 parcel.WriteBuffer(data, size);
74 parcel.RewindRead(0);
75 MessageParcel reply;
76 MessageOption option;
77 std::shared_ptr<AppMgrServiceInner> MgrServiceInner;
78 std::shared_ptr<AAFwk::TaskHandlerWrap> Handler;
79 std::shared_ptr<AmsMgrScheduler> abms = std::make_shared<AmsMgrScheduler>(MgrServiceInner, Handler);
80 abms->OnRemoteRequest(code, parcel, reply, option);
81 return true;
82 }
83 }
84
85 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)86 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
87 {
88 /* Run your code on data */
89 if (data == nullptr) {
90 std::cout << "invalid data" << std::endl;
91 return 0;
92 }
93
94 /* Validate the length of size */
95 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
96 return 0;
97 }
98
99 char* ch = static_cast<char*>(malloc(size + 1));
100 if (ch == nullptr) {
101 std::cout << "malloc failed." << std::endl;
102 return 0;
103 }
104
105 (void)memset_s(ch, size + 1, 0x00, size + 1);
106 if (memcpy_s(ch, size + 1, data, size) != EOK) {
107 std::cout << "copy failed." << std::endl;
108 free(ch);
109 ch = nullptr;
110 return 0;
111 }
112
113 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
114 free(ch);
115 ch = nullptr;
116 return 0;
117 }
118
119