installshield_z.h

   1 /*
   2   InstallShield Z file format
   3   Copyright 2015 <hacker@iam.tj>
   4   Licenced on the terms of then GNU General Public Licence version 3
   5
   6   Data structures used in InstallShield .Z archive files
   7  */
   8
   9 #include <sys/types.h>
  10 #include <inttypes.h>
  11 #include <stdbool.h>
  12
  13 const unsigned int file_magic = 0x8C655D12;
  14 const ssize_t Z_FILE_HEADER_BYTES = 0x100;
  15
  16 /* __prefixed field purpose is not confirmed */
  17 struct __attribute__((packed)) archive_header {
  18         uint32_t                magic;                                          // 0x00
  19         uint16_t                __version;                                      // 0x04
  20         uint16_t                __flags;                                        // 0x06
  21         uint32_t                __unknown08;                            // 0x08
  22         uint16_t                files_entries;                          // 0x0C
  23         uint16_t                datestamp;                                      // 0x0E
  24         uint16_t                timestamp;                                      // 0x10
  25         uint32_t                file_bytes;                                     // 0x12
  26         uint32_t                payload_bytes;                          // 0x16
  27         uint8_t                 __known1A;                                      // 0x1A
  28         uint16_t                __unknown1B;                            // 0x1B
  29         uint32_t                __unknown1D;                            // 0x1D
  30         uint32_t                __unknown21;                            // 0x21
  31         uint32_t                __unknown25;                            // 0x25
  32         uint32_t                directories_offset;                     // 0x29
  33         uint32_t                directories_bytes;                      // 0x2D
  34         uint16_t                directories_entries;            // 0x31
  35         uint32_t                files_offset;                           // 0x33
  36         uint32_t                files_bytes;                            // 0x37
  37         unsigned char   unknown3B[0x100 - 0x3B];        // 0x3B to 0xFF
  38 };
  39
  40 struct __attribute__((packed)) dirent_prefix {
  41         uint16_t                        __flags;                        // 0x00
  42         uint16_t                        entry_bytes;            // 0x02
  43         uint16_t                        name_bytes;                     // 0x04
  44         char                            name[];                         // 0x06
  45 };
  46
  47 struct __attribute__((packed)) dirent_suffix {
  48         unsigned char           __eos;                                  // end of string NUL
  49         uint32_t                        __unknown00;                    // 0x01 after end of directory_entry_prefix
  50 };
  51
  52 struct __attribute__((packed)) fileent_prefix {
  53         uint8_t                         __unknown00;
  54         uint16_t                        dir_index;
  55         uint32_t                        file_bytes;
  56         uint32_t                        payload_bytes;
  57         uint32_t                        payload_offset;
  58         uint16_t                        datestamp;
  59         uint16_t                        timestamp;
  60         uint32_t                        __unknown13;
  61         uint16_t                        entry_bytes;
  62         uint32_t                        __unknown01;
  63         uint8_t                         name_bytes;
  64         char                            name[];
  65 };
  66
  67 struct __attribute__((packed)) fileent_suffix {
  68         uint32_t                        __unkown00;
  69         uint32_t                        __unkown04;
  70         uint32_t                        __unkown08;
  71 };
  72
  73 struct dirent {
  74         struct dirent_prefix *entry;
  75         bool                            created;
  76 };
  77
  78 struct ll_fileents {
  79         struct fileent_prefix *entry;
  80         struct ll_fileents *next;
  81 };