1/*
2 * Copyright (c) 2024-2024 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#ifndef SIGNATRUETOOLS_DATA_DESCRIPTOR_H
17#define SIGNATRUETOOLS_DATA_DESCRIPTOR_H
18
19#include "byte_buffer.h"
20
21namespace OHOS {
22namespace SignatureTools {
23/**
24 * resolve zip DataDescriptor data
25 * DataDescriptor format:
26 * crc-32                          4 bytes
27 * compressed size                 4 bytes
28 * uncompressed size               4 bytes
29 */
30class DataDescriptor {
31public:
32    /* DataDescriptor invariable bytes length */
33    static constexpr int DES_LENGTH = 16;
34
35    /* 4 bytes , DataDescriptor signature */
36    static constexpr int SIGNATURE = 0x08074b50;
37
38    /**
39     * get Data Descriptor
40     *
41     * @param bytes DataDescriptor bytes
42     * @return DataDescriptor
43     * @throws ZipException read data descriptor exception
44     */
45    static DataDescriptor* GetDataDescriptor(const std::string& bytes);
46
47    std::string ToBytes();
48
49    static int GetDesLength();
50
51    static int GetSIGNATURE();
52
53    int GetCrc32();
54
55    void SetCrc32(int crc32);
56
57    uint32_t GetCompressedSize();
58
59    void SetCompressedSize(uint32_t compressedSize);
60
61    uint32_t GetUnCompressedSize();
62
63    void SetUnCompressedSize(uint32_t unCompressedSize);
64
65private:
66    /* 4 bytes */
67    int m_crc32 = 0;
68
69    /* 4 bytes */
70    uint32_t m_compressedSize = 0;
71
72    /* 4 bytes */
73    uint32_t m_unCompressedSize = 0;
74};
75} // namespace SignatureTools
76} // namespace OHOS
77#endif // SIGNATRUETOOLS_DATA_DESCRIPTOR_H