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 #define private public
17 #include <cstddef>
18 #include <cstdint>
19 #include "verifymanagerhostimplcopyfilestotempdir_fuzzer.h"
20 #include "verify_manager_host_impl.h"
21 #include "securec.h"
22
23 using namespace OHOS::AppExecFwk;
24 namespace OHOS {
25 constexpr size_t FOO_MAX_LEN = 1024;
26 constexpr size_t U32_AT_SIZE = 4;
27 constexpr size_t MESSAGE_SIZE = 21;
28 constexpr size_t DCAMERA_SHIFT_24 = 24;
29 constexpr size_t DCAMERA_SHIFT_16 = 16;
30 constexpr size_t DCAMERA_SHIFT_8 = 8;
31
GetU32Data(const char * ptr)32 uint32_t GetU32Data(const char* ptr)
33 {
34 return (ptr[0] << DCAMERA_SHIFT_24) | (ptr[1] << DCAMERA_SHIFT_16) | (ptr[2] << DCAMERA_SHIFT_8) | (ptr[3]);
35 }
36
DoSomethingInterestingWithMyAPI(const char * data,size_t size)37 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
38 {
39 VerifyManagerHostImpl impl;
40 std::string bundleName(data, size);
41 int32_t userId = static_cast<int32_t>(GetU32Data(data));
42 std::vector<std::string> abcPaths = { std::string(data, size) };
43 auto ret1 = impl.CopyFilesToTempDir(bundleName, userId, abcPaths);
44 return true;
45 }
46 }
47
48 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)49 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
50 {
51 /* Run your code on data */
52 if (data == nullptr) {
53 return 0;
54 }
55
56 if (size < OHOS::U32_AT_SIZE) {
57 return 0;
58 }
59
60 /* Validate the length of size */
61 if (size > OHOS::FOO_MAX_LEN) {
62 return 0;
63 }
64
65 char* ch = static_cast<char*>(malloc(size + 1));
66 if (ch == nullptr) {
67 return 0;
68 }
69
70 (void)memset_s(ch, size + 1, 0x00, size + 1);
71 if (memcpy_s(ch, size, data, size) != EOK) {
72 free(ch);
73 ch = nullptr;
74 return 0;
75 }
76 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
77 free(ch);
78 ch = nullptr;
79 return 0;
80 }