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 U32_AT_SIZE = 4;
26 constexpr size_t MESSAGE_SIZE = 21;
27 constexpr size_t DCAMERA_SHIFT_24 = 24;
28 constexpr size_t DCAMERA_SHIFT_16 = 16;
29 constexpr size_t DCAMERA_SHIFT_8 = 8;
30
GetU32Data(const char * ptr)31 uint32_t GetU32Data(const char* ptr)
32 {
33 return (ptr[0] << DCAMERA_SHIFT_24) | (ptr[1] << DCAMERA_SHIFT_16) | (ptr[2] << DCAMERA_SHIFT_8) | (ptr[3]);
34 }
35
DoSomethingInterestingWithMyAPI(const char * data,size_t size)36 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
37 {
38 VerifyManagerHostImpl impl;
39 std::string bundleName(data, size);
40 int32_t userId = static_cast<int32_t>(GetU32Data(data));
41 std::vector<std::string> abcPaths = { std::string(data, size) };
42 auto ret1 = impl.CopyFilesToTempDir(bundleName, userId, abcPaths);
43 return true;
44 }
45 }
46
47 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)48 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
49 {
50 /* Run your code on data */
51 if (data == nullptr) {
52 return 0;
53 }
54
55 if (size < OHOS::U32_AT_SIZE) {
56 return 0;
57 }
58
59 char* ch = static_cast<char*>(malloc(size + 1));
60 if (ch == nullptr) {
61 return 0;
62 }
63
64 (void)memset_s(ch, size + 1, 0x00, size + 1);
65 if (memcpy_s(ch, size, data, size) != EOK) {
66 free(ch);
67 ch = nullptr;
68 return 0;
69 }
70 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
71 free(ch);
72 ch = nullptr;
73 return 0;
74 }