libuuu/tar.h

   1 /*
   2  * Copyright 2020 NXP.
   3  *
   4  * Redistribution and use in source and binary forms, with or without modification,
   5  * are permitted provided that the following conditions are met:
   6  *
   7  * Redistributions of source code must retain the above copyright notice, this
   8  * list of conditions and the following disclaimer.
   9  *
  10  * Redistributions in binary form must reproduce the above copyright notice, this
  11  * list of conditions and the following disclaimer in the documentation and/or
  12  * other materials provided with the distribution.
  13  *
  14  * Neither the name of the NXP Semiconductor nor the names of its
  15  * contributors may be used to endorse or promote products derived from this
  16  * software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  */
  31
  32 #pragma once
  33
  34 #include <cstdint>
  35 #include <map>
  36 #include <memory>
  37 #include <string>
  38
  39 class FileBuffer;
  40
  41 #define TAR_BLOCK_SIZE 512
  42
  43 #pragma pack(1)
  44 struct Tar_header
  45 {
  46         uint8_t name[100];
  47         uint8_t mode[8];
  48         uint8_t owner_id[8];
  49         uint8_t group_id[8];
  50         uint8_t size[12];
  51         uint8_t modi_time[12];
  52         uint8_t checksum[8];
  53         uint8_t type[1];
  54         uint8_t linkname[100];
  55         uint8_t ustar[6];
  56         uint8_t version[2];
  57         uint8_t uname[32];
  58         uint8_t gname[32];
  59         uint8_t major_num[8];
  60         uint8_t minor_num[8];
  61         uint8_t prefix[155];
  62 };
  63 #pragma pack()
  64
  65 class Tar_file_Info
  66 {
  67 public:
  68         std::string filename;
  69         uint64_t offset;
  70         uint64_t size;
  71 };
  72
  73
  74 class Tar
  75 {
  76         std::string m_tarfilename;
  77
  78 public:
  79         std::map<std::string, Tar_file_Info> m_filemap;
  80         int Open(const std::string &filename);
  81         bool check_file_exist(const std::string &filename);
  82         int get_file_buff(const std::string &filename, std::shared_ptr<FileBuffer> p);
  83 };