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_ZIP_UTILS_H
17#define SIGNATRUETOOLS_ZIP_UTILS_H
18
19#include <limits>
20#include <memory>
21
22#include "signature_tools_log.h"
23#include "zip_data_input.h"
24
25namespace OHOS {
26namespace SignatureTools {
27class ZipUtils {
28public:
29    ZipUtils() = delete;
30    /**
31     * set offset value of Central Directory to End of Central Directory Record.
32     *
33     * @param eocd buffer of End of Central Directory Record.
34     * @param offset offset value of Central Directory.
35     */
36    static bool SetCentralDirectoryOffset(ByteBuffer& eocd, int64_t offset);
37
38private:
39    static constexpr int ZIP_CENTRAL_DIR_OFFSET_IN_EOCD = 16;
40
41    static constexpr int64_t UINT32_MAX_VALUE = 0xffffffffLL;
42
43    static bool SetUInt32ToBuffer(ByteBuffer& buffer, int offset, int64_t value);
44};
45} // namespace SignatureTools
46} // namespace OHOS
47#endif // SIGNATRUETOOLS_ZIP_UTILS_H
48