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 #define private public
16 #include <cstddef>
17 #include <cstdint>
18
19 #include "securec.h"
20 #include "bundle_clone_installer.h"
21 #include "bundle_installer.h"
22 #include "bundle_constants.h"
23 #include "bundle_mgr_service.h"
24 #include "bundlecloneinstaller_fuzzer.h"
25
26 using namespace OHOS::AppExecFwk;
27 using OHOS::DelayedSingleton;
28
29 namespace OHOS {
30 namespace {
31 constexpr int INPUT_ZERO = 0;
32 constexpr int INPUT_ONE = 1;
33 constexpr int INPUT_TWO = 2;
34 constexpr int INPUT_THREE = 3;
35 constexpr size_t U32_AT_SIZE = 4;
36 constexpr size_t OFFSET_ZERO = 24;
37 constexpr size_t OFFSET_ONE = 16;
38 constexpr size_t OFFSET_TWO = 8;
39 constexpr int32_t UID = 3024;
40 static std::shared_ptr<BundleCloneInstaller> bundleCloneInstall = nullptr;
41 }
42
SetBundleDataMgr()43 void SetBundleDataMgr()
44 {
45 bundleCloneInstall = std::make_shared<BundleCloneInstaller>();
46 DelayedSingleton<BundleMgrService>::GetInstance()->dataMgr_ = std::make_shared<AppExecFwk::BundleDataMgr>();
47 }
48
GetU32Data(const char * ptr)49 uint32_t GetU32Data(const char* ptr)
50 {
51 // convert fuzz input data to an integer
52 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
53 ptr[INPUT_THREE];
54 }
55
Init()56 bool Init()
57 {
58 static std::once_flag flag;
59 std::call_once(flag, SetBundleDataMgr);
60 if (!bundleCloneInstall || !DelayedSingleton<BundleMgrService>::GetInstance()->dataMgr_) {
61 return false;
62 }
63 return true;
64 }
65
DoSomethingInterestingWithMyAPI(const char * data,size_t size)66 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
67 {
68 if (!Init()) {
69 return false;
70 }
71 std::string bundleName(data, size);
72 int32_t userId = static_cast<int32_t>(GetU32Data(data));
73 int32_t appIndex = static_cast<int32_t>(GetU32Data(data));
74 bundleCloneInstall->InstallCloneApp(bundleName, userId, appIndex);
75 bundleCloneInstall->UninstallCloneApp(bundleName, userId, appIndex, true);
76 bundleCloneInstall->UninstallAllCloneApps(bundleName, true, userId);
77 InnerBundleInfo info;
78 bundleCloneInstall->CreateCloneDataDir(info, userId, UID, appIndex);
79 bundleCloneInstall->RemoveCloneDataDir(bundleName, userId, appIndex, true);
80 return true;
81 }
82 }
83
84 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)85 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
86 {
87 /* Run your code on data */
88 if (data == nullptr) {
89 return 0;
90 }
91
92 /* Validate the length of size */
93 if (size < OHOS::U32_AT_SIZE) {
94 return 0;
95 }
96
97 char* ch = (char *)malloc(size + 1);
98 if (ch == nullptr) {
99 std::cout << "malloc failed." << std::endl;
100 return 0;
101 }
102
103 (void)memset_s(ch, size + 1, 0x00, size + 1);
104 if (memcpy_s(ch, size + 1, data, size) != EOK) {
105 std::cout << "copy failed." << std::endl;
106 free(ch);
107 ch = nullptr;
108 return 0;
109 }
110
111 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
112 free(ch);
113 ch = nullptr;
114 return 0;
115 }