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 "quickfixbootscanner_fuzzer.h"
17 #define private public
18 #include "quick_fix_boot_scanner.h"
19 #include "securec.h"
20
21 using namespace OHOS::AppExecFwk;
22 namespace OHOS {
23 constexpr size_t U32_AT_SIZE = 4;
24 constexpr size_t MESSAGE_SIZE = 4;
25 constexpr size_t DCAMERA_SHIFT_24 = 24;
26 constexpr size_t DCAMERA_SHIFT_16 = 16;
27 constexpr size_t DCAMERA_SHIFT_8 = 8;
28
GetU32Data(const char * ptr)29 uint32_t GetU32Data(const char* ptr)
30 {
31 return (ptr[0] << DCAMERA_SHIFT_24) | (ptr[1] << DCAMERA_SHIFT_16) | (ptr[2] << DCAMERA_SHIFT_8) | (ptr[3]);
32 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)33 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
34 {
35 QuickFixBootScanner quickFixBootScanner;
36 quickFixBootScanner.ProcessQuickFixBootUp();
37 std::shared_ptr<QuickFixState> state_ = nullptr;
38 quickFixBootScanner.SetQuickFixState(state_);
39 quickFixBootScanner.ProcessState();
40 quickFixBootScanner.RestoreQuickFix();
41 std::string bundlePath (reinterpret_cast<const char*>(data), size);
42 std::string realPath (reinterpret_cast<const char*>(data), size);
43 std::vector<std::string> fileDir;
44 fileDir.push_back(bundlePath);
45 quickFixBootScanner.ProcessQuickFixDir(fileDir);
46 quickFixBootScanner.ReprocessQuickFix(realPath, bundlePath);
47 std::string bundleName(data, size);
48 std::string quickFixPath(data, size);
49 ApplicationInfo info;
50 quickFixBootScanner.GetApplicationInfo(bundleName, quickFixPath, info);
51 int32_t quickFixVersion = reinterpret_cast<uintptr_t>(data);
52 int32_t fileVersion = reinterpret_cast<uintptr_t>(data);
53 quickFixBootScanner.ProcessWithBundleHasQuickFixInfo(bundleName, quickFixPath, quickFixVersion, fileVersion);
54 quickFixBootScanner.RemoveInvalidDir();
55 return true;
56 }
57 }
58
59 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
61 {
62 /* Run your code on data */
63 if (data == nullptr) {
64 return 0;
65 }
66
67 if (size < OHOS::U32_AT_SIZE) {
68 return 0;
69 }
70
71 char* ch = static_cast<char*>(malloc(size + 1));
72 if (ch == nullptr) {
73 return 0;
74 }
75
76 (void)memset_s(ch, size + 1, 0x00, size + 1);
77 if (memcpy_s(ch, size, data, size) != EOK) {
78 free(ch);
79 ch = nullptr;
80 return 0;
81 }
82 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
83 free(ch);
84 ch = nullptr;
85 return 0;
86 }