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 <sys/types.h>
17 #include <sys/stat.h>
18 #include <unistd.h>
19 #include <cstddef>
20 #include <cstdint>
21 #include <cstdio>
22
23 #include "random_access_file.h"
24 #include "random_access_file_input.h"
25 #include "random_access_file_output.h"
26
27 namespace OHOS {
28 namespace SignatureTools {
29
30 const char* UNSIGNED_HAP_FILE_PATH = "./zip/unsigned.hap";
RandomAccessFileReadFileFunc(const uint8_t * data,size_t size)31 void RandomAccessFileReadFileFunc(const uint8_t* data, size_t size)
32 {
33 auto outputHap = std::make_shared<RandomAccessFile>();
34 if (!outputHap->Init(UNSIGNED_HAP_FILE_PATH)) {
35 return;
36 }
37 std::string buf(1, 0);
38 outputHap->ReadFileFullyFromOffset(buf.data(), 0, 1);
39 }
40
RandomAccessFileInputConstructor(const uint8_t * data,size_t size)41 void RandomAccessFileInputConstructor(const uint8_t* data, size_t size)
42 {
43 RandomAccessFile file;
44 std::string name(reinterpret_cast<const char*>(data), size);
45 if (!file.Init(UNSIGNED_HAP_FILE_PATH + name)) {
46 return;
47 }
48 int64_t fileLength = file.GetLength();
49 RandomAccessFileInput fileInput(file, 0, fileLength);
50 fileInput.Size();
51 }
52
RandomAccessFileOutputConstructor(const uint8_t * data,size_t size)53 void RandomAccessFileOutputConstructor(const uint8_t* data, size_t size)
54 {
55 RandomAccessFile file;
56 std::string name(reinterpret_cast<const char*>(data), size);
57 if (!file.Init(UNSIGNED_HAP_FILE_PATH + name)) {
58 return;
59 }
60 RandomAccessFileOutput fileOutput(&file);
61 }
62
DoSomethingInterestingWithMyAPI(const uint8_t * data,size_t size)63 void DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)
64 {
65 if (data == nullptr || size == 0) {
66 return;
67 }
68
69 RandomAccessFileReadFileFunc(data, size);
70 RandomAccessFileInputConstructor(data, size);
71 RandomAccessFileOutputConstructor(data, size);
72 }
73 } // namespace SignatureTools
74 } // namespace OHOS
75
76 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)77 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
78 {
79 /* Run your code on data */
80 (void)rename("./zip/unsigned.txt", OHOS::SignatureTools::UNSIGNED_HAP_FILE_PATH);
81 sync();
82 OHOS::SignatureTools::DoSomethingInterestingWithMyAPI(data, size);
83 return 0;
84 }