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ã@SÿÑ ?÷     ;#!/usr/bin/perl

# zipdetails
#
# Display info on the contents of a Zip file
#

BEGIN { pop @INC if $INC[-1] eq '.' }
use strict;
use warnings ;

use IO::File;
use Encode;
use Getopt::Long;

# Compression types
use constant ZIP_CM_STORE                      => 0 ;
use constant ZIP_CM_IMPLODE                    => 6 ;
use constant ZIP_CM_DEFLATE                    => 8 ;
use constant ZIP_CM_BZIP2                      => 12 ;
use constant ZIP_CM_LZMA                       => 14 ;
use constant ZIP_CM_PPMD                       => 98 ;

# General Purpose Flag
use constant ZIP_GP_FLAG_ENCRYPTED_MASK        => (1 << 0) ;
use constant ZIP_GP_FLAG_STREAMING_MASK        => (1 << 3) ;
use constant ZIP_GP_FLAG_PATCHED_MASK          => (1 << 5) ;
use constant ZIP_GP_FLAG_STRONG_ENCRYPTED_MASK => (1 << 6) ;
use constant ZIP_GP_FLAG_LZMA_EOS_PRESENT      => (1 << 1) ;
use constant ZIP_GP_FLAG_LANGUAGE_ENCODING     => (1 << 11) ;

# Internal File Attributes
use constant ZIP_IFA_TEXT_MASK                 => 1;

# Signatures for each of the headers
use constant ZIP_LOCAL_HDR_SIG                 => 0x04034b50;
use constant ZIP_DATA_HDR_SIG                  => 0x08074b50;
use constant ZIP_CENTRAL_HDR_SIG               => 0x02014b50;
use constant ZIP_END_CENTRAL_HDR_SIG           => 0x06054b50;
use constant ZIP64_END_CENTRAL_REC_HDR_SIG     => 0x06064b50;
use constant ZIP64_END_CENTRAL_LOC_HDR_SIG     => 0x07064b50;
use constant ZIP_ARCHIVE_EXTRA_DATA_SIG        => 0x08064b50;
use constant ZIP_DIGITAL_SIGNATURE_SIG         => 0x05054b50;

use constant ZIP_ARCHIVE_EXTRA_DATA_RECORD_SIG => 0x08064b50;

# Extra sizes
use constant ZIP_EXTRA_HEADER_SIZE          => 2 ;
use constant ZIP_EXTRA_MAX_SIZE             => 0xFFFF ;
use constant ZIP_EXTRA_SUBFIELD_ID_SIZE     => 2 ;
use constant ZIP_EXTRA_SUBFIELD_LEN_SIZE    => 2 ;
use constant ZIP_EXTRA_SUBFIELD_HEADER_SIZE => ZIP_EXTRA_SUBFIELD_ID_SIZE +
                                               ZIP_EXTRA_SUBFIELD_LEN_SIZE;
use constant ZIP_EXTRA_SUBFIELD_MAX_SIZE    => ZIP_EXTRA_MAX_SIZE -
                                               ZIP_EXTRA_SUBFIELD_HEADER_SIZE;

my %ZIP_CompressionMethods =
    (
          0 => 'Stored',
          1 => 'Shrunk',
          2 => 'Reduced compression factor 1',
          3 => 'Reduced compression factor 2',
          4 => 'Reduced compression factor 3',
          5 => 'Reduced compression factor 4',
          6 => 'Imploded',
          7 => 'Reserved for Tokenizing compression algorithm',
          8 => 'Deflated',
          9 => 'Enhanced Deflating using Deflate64(tm)',
         10 => 'PKWARE Data Compression Library Imploding',
         11 => 'Reserved by PKWARE',
         12 => 'BZIP2 ',
         13 => 'Reserved by PKWARE',
         14 => 'LZMA',
         15 => 'Reserved by PKWARE',
         16 => 'IBM z/OS CMPSC Compression',
         17 => 'Reserved by PKWARE',
         18 => 'File is compressed using IBM TERSE (new)',
         19 => 'IBM LZ77 z Architecture (PFS)',
         93 => 'Zstandard',
         94 => 'MP3',
         95 => 'XZ',
         96 => 'WinZip JPEG Compression',
         97 => 'WavPack compressed data',
         98 => 'PPMd version I, Rev 1',
         99 => 'AES Encryption',
     );

my %OS_Lookup = (
    0   => "MS-DOS",
    1   => "Amiga",
    2   => "OpenVMS",
    3   => "Unix",
    4   => "VM/CMS",
    5   => "Atari ST",
    6   => "HPFS (OS/2, NT 3.x)",
    7   => "Macintosh",
    8   => "Z-System",
    9   => "CP/M",
    10  => "Windoxs NTFS or TOPS-20",
    11  => "MVS or NTFS",
    12  => "VSE or SMS/QDOS",
    13  => "Acorn RISC OS",
    14  => "VFAT",
    15  => "alternate MVS",
    16  => "BeOS",
    17  => "Tandem",
    18  => "OS/400",
    19  => "OS/X (Darwin)",
    30  => "AtheOS/Syllable",
    );


my %Lookup = (
    ZIP_LOCAL_HDR_SIG,             \&LocalHeader,
    ZIP_DATA_HDR_SIG,              \&DataHeader,
    ZIP_CENTRAL_HDR_SIG,           \&CentralHeader,
    ZIP_END_CENTRAL_HDR_SIG,       \&EndCentralHeader,
    ZIP64_END_CENTRAL_REC_HDR_SI