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 "abilityapppreloader_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "app_preloader.h"
24 #include "bundle_mgr_helper.h"
25 #undef protected
26 #undef private
27 #include "parcel.h"
28 #include <iostream>
29 #include "securec.h"
30 #include "configuration.h"
31
32 using namespace OHOS::AppExecFwk;
33
34 namespace OHOS {
35 namespace {
36 constexpr int INPUT_ZERO = 0;
37 constexpr int INPUT_ONE = 1;
38 constexpr int INPUT_TWO = 2;
39 constexpr int INPUT_THREE = 3;
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 }
45
GetU32Data(const char * ptr)46 uint32_t GetU32Data(const char* ptr)
47 {
48 // convert fuzz input data to an integer
49 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
50 ptr[INPUT_THREE];
51 }
52
DoSomethingInterestingWithMyAPI(const char * data,size_t size)53 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
54 {
55 std::shared_ptr<RemoteClientManager> remoteClientManager = std::make_shared<RemoteClientManager>();
56 auto bundleMgrHelper = std::make_shared<AppExecFwk::BundleMgrHelper>();
57 remoteClientManager->SetBundleManagerHelper(bundleMgrHelper);
58 auto appPreloader = std::make_shared<AppPreloader>(remoteClientManager);
59 std::string bundleName(data, size);
60 int32_t userId = static_cast<int32_t>(GetU32Data(data));
61 int32_t appIndex = static_cast<int32_t>(GetU32Data(data));
62 PreloadRequest request;
63 appPreloader->GeneratePreloadRequest(bundleName, userId, appIndex, request);
64 appPreloader->GetBundleManagerHelper();
65 AbilityInfo abilityInfo;
66 appPreloader->CheckPreloadConditions(abilityInfo);
67 AAFwk::Want launchWant;
68 appPreloader->GetLaunchWant(bundleName, userId, launchWant);
69 appPreloader->GetLaunchAbilityInfo(launchWant, userId, abilityInfo);
70 appPreloader->PreCheck(bundleName, PreloadMode::PRE_MAKE);
71 return true;
72 }
73 }
74
75 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77 {
78 /* Run your code on data */
79 if (data == nullptr) {
80 return 0;
81 }
82
83 /* Validate the length of size */
84 if (size < OHOS::U32_AT_SIZE) {
85 return 0;
86 }
87
88 char* ch = (char*)malloc(size + 1);
89 if (ch == nullptr) {
90 std::cout << "malloc failed." << std::endl;
91 return 0;
92 }
93
94 (void)memset_s(ch, size + 1, 0x00, size + 1);
95 if (memcpy_s(ch, size, data, size) != EOK) {
96 std::cout << "copy failed." << std::endl;
97 free(ch);
98 ch = nullptr;
99 return 0;
100 }
101
102 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
103 free(ch);
104 ch = nullptr;
105 return 0;
106 }
107
108