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keedi/archive-zip.pl

Created March 8, 2013 05:39
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archive-zip.pl
# This chunk of stuff was generated by App::FatPacker. To find the original
# file's code, look for the end of this BEGIN block or the string 'FATPACK'
BEGIN {
my %fatpacked;
$fatpacked{"Archive/Zip.pm"} = <<'ARCHIVE_ZIP';
package Archive::Zip;
use strict;
BEGIN {
require 5.003_96;
}
use UNIVERSAL ();
use Carp ();
use Cwd ();
use IO::File ();
use IO::Seekable ();
use Compress::Raw::Zlib ();
use File::Spec ();
use File::Temp ();
use FileHandle ();
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
require Exporter;
@ISA = qw( Exporter );
}
use vars qw( $ChunkSize $ErrorHandler );
BEGIN {
# This is the size we'll try to read, write, and (de)compress.
# You could set it to something different if you had lots of memory
# and needed more speed.
$ChunkSize ||= 32768;
$ErrorHandler = \&Carp::carp;
}
# BEGIN block is necessary here so that other modules can use the constants.
use vars qw( @EXPORT_OK %EXPORT_TAGS );
BEGIN {
@EXPORT_OK = ('computeCRC32');
%EXPORT_TAGS = (
CONSTANTS => [ qw(
FA_MSDOS
FA_UNIX
GPBF_ENCRYPTED_MASK
GPBF_DEFLATING_COMPRESSION_MASK
GPBF_HAS_DATA_DESCRIPTOR_MASK
COMPRESSION_STORED
COMPRESSION_DEFLATED
COMPRESSION_LEVEL_NONE
COMPRESSION_LEVEL_DEFAULT
COMPRESSION_LEVEL_FASTEST
COMPRESSION_LEVEL_BEST_COMPRESSION
IFA_TEXT_FILE_MASK
IFA_TEXT_FILE
IFA_BINARY_FILE
) ],
MISC_CONSTANTS => [ qw(
FA_AMIGA
FA_VAX_VMS
FA_VM_CMS
FA_ATARI_ST
FA_OS2_HPFS
FA_MACINTOSH
FA_Z_SYSTEM
FA_CPM
FA_TOPS20
FA_WINDOWS_NTFS
FA_QDOS
FA_ACORN
FA_VFAT
FA_MVS
FA_BEOS
FA_TANDEM
FA_THEOS
GPBF_IMPLODING_8K_SLIDING_DICTIONARY_MASK
GPBF_IMPLODING_3_SHANNON_FANO_TREES_MASK
GPBF_IS_COMPRESSED_PATCHED_DATA_MASK
COMPRESSION_SHRUNK
DEFLATING_COMPRESSION_NORMAL
DEFLATING_COMPRESSION_MAXIMUM
DEFLATING_COMPRESSION_FAST
DEFLATING_COMPRESSION_SUPER_FAST
COMPRESSION_REDUCED_1
COMPRESSION_REDUCED_2
COMPRESSION_REDUCED_3
COMPRESSION_REDUCED_4
COMPRESSION_IMPLODED
COMPRESSION_TOKENIZED
COMPRESSION_DEFLATED_ENHANCED
COMPRESSION_PKWARE_DATA_COMPRESSION_LIBRARY_IMPLODED
) ],
ERROR_CODES => [ qw(
AZ_OK
AZ_STREAM_END
AZ_ERROR
AZ_FORMAT_ERROR
AZ_IO_ERROR
) ],
# For Internal Use Only
PKZIP_CONSTANTS => [ qw(
SIGNATURE_FORMAT
SIGNATURE_LENGTH
LOCAL_FILE_HEADER_SIGNATURE
LOCAL_FILE_HEADER_FORMAT
LOCAL_FILE_HEADER_LENGTH
CENTRAL_DIRECTORY_FILE_HEADER_SIGNATURE
DATA_DESCRIPTOR_FORMAT
DATA_DESCRIPTOR_LENGTH
DATA_DESCRIPTOR_SIGNATURE
DATA_DESCRIPTOR_FORMAT_NO_SIG
DATA_DESCRIPTOR_LENGTH_NO_SIG
CENTRAL_DIRECTORY_FILE_HEADER_FORMAT
CENTRAL_DIRECTORY_FILE_HEADER_LENGTH
END_OF_CENTRAL_DIRECTORY_SIGNATURE
END_OF_CENTRAL_DIRECTORY_SIGNATURE_STRING
END_OF_CENTRAL_DIRECTORY_FORMAT
END_OF_CENTRAL_DIRECTORY_LENGTH
) ],
# For Internal Use Only
UTILITY_METHODS => [ qw(
_error
_printError
_ioError
_formatError
_subclassResponsibility
_binmode
_isSeekable
_newFileHandle
_readSignature
_asZipDirName
) ],
);
# Add all the constant names and error code names to @EXPORT_OK
Exporter::export_ok_tags( qw(
CONSTANTS
ERROR_CODES
PKZIP_CONSTANTS
UTILITY_METHODS
MISC_CONSTANTS
) );
}
# Error codes
use constant AZ_OK => 0;
use constant AZ_STREAM_END => 1;
use constant AZ_ERROR => 2;
use constant AZ_FORMAT_ERROR => 3;
use constant AZ_IO_ERROR => 4;
# File types
# Values of Archive::Zip::Member->fileAttributeFormat()
use constant FA_MSDOS => 0;
use constant FA_AMIGA => 1;
use constant FA_VAX_VMS => 2;
use constant FA_UNIX => 3;
use constant FA_VM_CMS => 4;
use constant FA_ATARI_ST => 5;
use constant FA_OS2_HPFS => 6;
use constant FA_MACINTOSH => 7;
use constant FA_Z_SYSTEM => 8;
use constant FA_CPM => 9;
use constant FA_TOPS20 => 10;
use constant FA_WINDOWS_NTFS => 11;
use constant FA_QDOS => 12;
use constant FA_ACORN => 13;
use constant FA_VFAT => 14;
use constant FA_MVS => 15;
use constant FA_BEOS => 16;
use constant FA_TANDEM => 17;
use constant FA_THEOS => 18;
# general-purpose bit flag masks
# Found in Archive::Zip::Member->bitFlag()
use constant GPBF_ENCRYPTED_MASK => 1 << 0;
use constant GPBF_DEFLATING_COMPRESSION_MASK => 3 << 1;
use constant GPBF_HAS_DATA_DESCRIPTOR_MASK => 1 << 3;
# deflating compression types, if compressionMethod == COMPRESSION_DEFLATED
# ( Archive::Zip::Member->bitFlag() & GPBF_DEFLATING_COMPRESSION_MASK )
use constant DEFLATING_COMPRESSION_NORMAL => 0 << 1;
use constant DEFLATING_COMPRESSION_MAXIMUM => 1 << 1;
use constant DEFLATING_COMPRESSION_FAST => 2 << 1;
use constant DEFLATING_COMPRESSION_SUPER_FAST => 3 << 1;
# compression method
# these two are the only ones supported in this module
use constant COMPRESSION_STORED => 0; # file is stored (no compression)
use constant COMPRESSION_DEFLATED => 8; # file is Deflated
use constant COMPRESSION_LEVEL_NONE => 0;
use constant COMPRESSION_LEVEL_DEFAULT => -1;
use constant COMPRESSION_LEVEL_FASTEST => 1;
use constant COMPRESSION_LEVEL_BEST_COMPRESSION => 9;
# internal file attribute bits
# Found in Archive::Zip::Member::internalFileAttributes()
use constant IFA_TEXT_FILE_MASK => 1;
use constant IFA_TEXT_FILE => 1;
use constant IFA_BINARY_FILE => 0;
# PKZIP file format miscellaneous constants (for internal use only)
use constant SIGNATURE_FORMAT => "V";
use constant SIGNATURE_LENGTH => 4;
# these lengths are without the signature.
use constant LOCAL_FILE_HEADER_SIGNATURE => 0x04034b50;
use constant LOCAL_FILE_HEADER_FORMAT => "v3 V4 v2";
use constant LOCAL_FILE_HEADER_LENGTH => 26;
# PKZIP docs don't mention the signature, but Info-Zip writes it.
use constant DATA_DESCRIPTOR_SIGNATURE => 0x08074b50;
use constant DATA_DESCRIPTOR_FORMAT => "V3";
use constant DATA_DESCRIPTOR_LENGTH => 12;
# but the signature is apparently optional.
use constant DATA_DESCRIPTOR_FORMAT_NO_SIG => "V2";
use constant DATA_DESCRIPTOR_LENGTH_NO_SIG => 8;
use constant CENTRAL_DIRECTORY_FILE_HEADER_SIGNATURE => 0x02014b50;
use constant CENTRAL_DIRECTORY_FILE_HEADER_FORMAT => "C2 v3 V4 v5 V2";
use constant CENTRAL_DIRECTORY_FILE_HEADER_LENGTH => 42;
use constant END_OF_CENTRAL_DIRECTORY_SIGNATURE => 0x06054b50;
use constant END_OF_CENTRAL_DIRECTORY_SIGNATURE_STRING =>
pack( "V", END_OF_CENTRAL_DIRECTORY_SIGNATURE );
use constant END_OF_CENTRAL_DIRECTORY_FORMAT => "v4 V2 v";
use constant END_OF_CENTRAL_DIRECTORY_LENGTH => 18;
use constant GPBF_IMPLODING_8K_SLIDING_DICTIONARY_MASK => 1 << 1;
use constant GPBF_IMPLODING_3_SHANNON_FANO_TREES_MASK => 1 << 2;
use constant GPBF_IS_COMPRESSED_PATCHED_DATA_MASK => 1 << 5;
# the rest of these are not supported in this module
use constant COMPRESSION_SHRUNK => 1; # file is Shrunk
use constant COMPRESSION_REDUCED_1 => 2; # file is Reduced CF=1
use constant COMPRESSION_REDUCED_2 => 3; # file is Reduced CF=2
use constant COMPRESSION_REDUCED_3 => 4; # file is Reduced CF=3
use constant COMPRESSION_REDUCED_4 => 5; # file is Reduced CF=4
use constant COMPRESSION_IMPLODED => 6; # file is Imploded
use constant COMPRESSION_TOKENIZED => 7; # reserved for Tokenizing compr.
use constant COMPRESSION_DEFLATED_ENHANCED => 9; # reserved for enh. Deflating
use constant COMPRESSION_PKWARE_DATA_COMPRESSION_LIBRARY_IMPLODED => 10;
# Load the various required classes
require Archive::Zip::Archive;
require Archive::Zip::Member;
require Archive::Zip::FileMember;
require Archive::Zip::DirectoryMember;
require Archive::Zip::ZipFileMember;
require Archive::Zip::NewFileMember;
require Archive::Zip::StringMember;
use constant ZIPARCHIVECLASS => 'Archive::Zip::Archive';
use constant ZIPMEMBERCLASS => 'Archive::Zip::Member';
# Convenience functions
sub _ISA ($$) {
# Can't rely on Scalar::Util, so use the next best way
local $@;
!! eval { ref $_[0] and $_[0]->isa($_[1]) };
}
sub _CAN ($$) {
local $@;
!! eval { ref $_[0] and $_[0]->can($_[1]) };
}
#####################################################################
# Methods
sub new {
my $class = shift;
return $class->ZIPARCHIVECLASS->new(@_);
}
sub computeCRC32 {
my ( $data, $crc );
if ( ref( $_[0] ) eq 'HASH' ) {
$data = $_[0]->{string};
$crc = $_[0]->{checksum};
}
else {
$data = shift;
$data = shift if ref($data);
$crc = shift;
}
return Compress::Raw::Zlib::crc32( $data, $crc );
}
# Report or change chunk size used for reading and writing.
# Also sets Zlib's default buffer size (eventually).
sub setChunkSize {
shift if ref( $_[0] ) eq 'Archive::Zip::Archive';
my $chunkSize = ( ref( $_[0] ) eq 'HASH' ) ? shift->{chunkSize} : shift;
my $oldChunkSize = $Archive::Zip::ChunkSize;
$Archive::Zip::ChunkSize = $chunkSize if ($chunkSize);
return $oldChunkSize;
}
sub chunkSize {
return $Archive::Zip::ChunkSize;
}
sub setErrorHandler {
my $errorHandler = ( ref( $_[0] ) eq 'HASH' ) ? shift->{subroutine} : shift;
$errorHandler = \&Carp::carp unless defined($errorHandler);
my $oldErrorHandler = $Archive::Zip::ErrorHandler;
$Archive::Zip::ErrorHandler = $errorHandler;
return $oldErrorHandler;
}
######################################################################
# Private utility functions (not methods).
sub _printError {
my $string = join ( ' ', @_, "\n" );
my $oldCarpLevel = $Carp::CarpLevel;
$Carp::CarpLevel += 2;
&{$ErrorHandler} ($string);
$Carp::CarpLevel = $oldCarpLevel;
}
# This is called on format errors.
sub _formatError {
shift if ref( $_[0] );
_printError( 'format error:', @_ );
return AZ_FORMAT_ERROR;
}
# This is called on IO errors.
sub _ioError {
shift if ref( $_[0] );
_printError( 'IO error:', @_, ':', $! );
return AZ_IO_ERROR;
}
# This is called on generic errors.
sub _error {
shift if ref( $_[0] );
_printError( 'error:', @_ );
return AZ_ERROR;
}
# Called when a subclass should have implemented
# something but didn't
sub _subclassResponsibility {
Carp::croak("subclass Responsibility\n");
}
# Try to set the given file handle or object into binary mode.
sub _binmode {
my $fh = shift;
return _CAN( $fh, 'binmode' ) ? $fh->binmode() : binmode($fh);
}
# Attempt to guess whether file handle is seekable.
# Because of problems with Windows, this only returns true when
# the file handle is a real file.
sub _isSeekable {
my $fh = shift;
return 0 unless ref $fh;
if ( _ISA($fh, 'IO::Scalar') ) {
# IO::Scalar objects are brokenly-seekable
return 0;
}
if ( _ISA($fh, 'IO::String') ) {
return 1;
}
if ( _ISA($fh, 'IO::Seekable') ) {
# Unfortunately, some things like FileHandle objects
# return true for Seekable, but AREN'T!!!!!
if ( _ISA($fh, 'FileHandle') ) {
return 0;
} else {
return 1;
}
}
if ( _CAN($fh, 'stat') ) {
return -f $fh;
}
return (
_CAN($fh, 'seek') and _CAN($fh, 'tell')
) ? 1 : 0;
}
# Print to the filehandle, while making sure the pesky Perl special global
# variables don't interfere.
sub _print
{
my ($self, $fh, @data) = @_;
local $\;
return $fh->print(@data);
}
# Return an opened IO::Handle
# my ( $status, fh ) = _newFileHandle( 'fileName', 'w' );
# Can take a filename, file handle, or ref to GLOB
# Or, if given something that is a ref but not an IO::Handle,
# passes back the same thing.
sub _newFileHandle {
my $fd = shift;
my $status = 1;
my $handle;
if ( ref($fd) ) {
if ( _ISA($fd, 'IO::Scalar') or _ISA($fd, 'IO::String') ) {
$handle = $fd;
} elsif ( _ISA($fd, 'IO::Handle') or ref($fd) eq 'GLOB' ) {
$handle = IO::File->new;
$status = $handle->fdopen( $fd, @_ );
} else {
$handle = $fd;
}
} else {
$handle = IO::File->new;
$status = $handle->open( $fd, @_ );
}
return ( $status, $handle );
}
# Returns next signature from given file handle, leaves
# file handle positioned afterwards.
# In list context, returns ($status, $signature)
# ( $status, $signature) = _readSignature( $fh, $fileName );
sub _readSignature {
my $fh = shift;
my $fileName = shift;
my $expectedSignature = shift; # optional
my $signatureData;
my $bytesRead = $fh->read( $signatureData, SIGNATURE_LENGTH );
if ( $bytesRead != SIGNATURE_LENGTH ) {
return _ioError("reading header signature");
}
my $signature = unpack( SIGNATURE_FORMAT, $signatureData );
my $status = AZ_OK;
# compare with expected signature, if any, or any known signature.
if ( ( defined($expectedSignature) && $signature != $expectedSignature )
|| ( !defined($expectedSignature)
&& $signature != CENTRAL_DIRECTORY_FILE_HEADER_SIGNATURE
&& $signature != LOCAL_FILE_HEADER_SIGNATURE
&& $signature != END_OF_CENTRAL_DIRECTORY_SIGNATURE
&& $signature != DATA_DESCRIPTOR_SIGNATURE ) )
{
my $errmsg = sprintf( "bad signature: 0x%08x", $signature );
if ( _isSeekable($fh) )
{
$errmsg .=
sprintf( " at offset %d", $fh->tell() - SIGNATURE_LENGTH );
}
$status = _formatError("$errmsg in file $fileName");
}
return ( $status, $signature );
}
# Utility method to make and open a temp file.
# Will create $temp_dir if it doesn't exist.
# Returns file handle and name:
#
# my ($fh, $name) = Archive::Zip::tempFile();
# my ($fh, $name) = Archive::Zip::tempFile('mytempdir');
#
sub tempFile {
my $dir = ( ref( $_[0] ) eq 'HASH' ) ? shift->{tempDir} : shift;
my ( $fh, $filename ) = File::Temp::tempfile(
SUFFIX => '.zip',
UNLINK => 0, # we will delete it!
$dir ? ( DIR => $dir ) : ()
);
return ( undef, undef ) unless $fh;
my ( $status, $newfh ) = _newFileHandle( $fh, 'w+' );
return ( $newfh, $filename );
}
# Return the normalized directory name as used in a zip file (path
# separators become slashes, etc.).
# Will translate internal slashes in path components (i.e. on Macs) to
# underscores. Discards volume names.
# When $forceDir is set, returns paths with trailing slashes (or arrays
# with trailing blank members).
#
# If third argument is a reference, returns volume information there.
#
# input output
# . ('.') '.'
# ./a ('a') a
# ./a/b ('a','b') a/b
# ./a/b/ ('a','b') a/b
# a/b/ ('a','b') a/b
# /a/b/ ('','a','b') /a/b
# c:\a\b\c.doc ('','a','b','c.doc') /a/b/c.doc # on Windoze
# "i/o maps:whatever" ('i_o maps', 'whatever') "i_o maps/whatever" # on Macs
sub _asZipDirName
{
my $name = shift;
my $forceDir = shift;
my $volReturn = shift;
my ( $volume, $directories, $file ) =
File::Spec->splitpath( File::Spec->canonpath($name), $forceDir );
$$volReturn = $volume if ( ref($volReturn) );
my @dirs = map { $_ =~ s{/}{_}g; $_ } File::Spec->splitdir($directories);
if ( @dirs > 0 ) { pop (@dirs) unless $dirs[-1] } # remove empty component
push ( @dirs, defined($file) ? $file : '' );
#return wantarray ? @dirs : join ( '/', @dirs );
return join ( '/', @dirs );
}
# Return an absolute local name for a zip name.
# Assume a directory if zip name has trailing slash.
# Takes an optional volume name in FS format (like 'a:').
#
sub _asLocalName
{
my $name = shift; # zip format
my $volume = shift;
$volume = '' unless defined($volume); # local FS format
my @paths = split ( /\//, $name );
my $filename = pop (@paths);
$filename = '' unless defined($filename);
my $localDirs = @paths ? File::Spec->catdir(@paths) : '';
my $localName = File::Spec->catpath( $volume, $localDirs, $filename );
unless ( $volume ) {
$localName = File::Spec->rel2abs( $localName, Cwd::getcwd() );
}
return $localName;
}
1;
__END__
=pod
=head1 NAME
Archive::Zip - Provide an interface to ZIP archive files.
=head1 SYNOPSIS
# Create a Zip file
use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
my $zip = Archive::Zip->new();
# Add a directory
my $dir_member = $zip->addDirectory( 'dirname/' );
# Add a file from a string with compression
my $string_member = $zip->addString( 'This is a test', 'stringMember.txt' );
$string_member->desiredCompressionMethod( COMPRESSION_DEFLATED );
# Add a file from disk
my $file_member = $zip->addFile( 'xyz.pl', 'AnotherName.pl' );
# Save the Zip file
unless ( $zip->writeToFileNamed('someZip.zip') == AZ_OK ) {
die 'write error';
}
# Read a Zip file
my $somezip = Archive::Zip->new();
unless ( $somezip->read( 'someZip.zip' ) == AZ_OK ) {
die 'read error';
}
# Change the compression type for a file in the Zip
my $member = $somezip->memberNamed( 'stringMember.txt' );
$member->desiredCompressionMethod( COMPRESSION_STORED );
unless ( $zip->writeToFileNamed( 'someOtherZip.zip' ) == AZ_OK ) {
die 'write error';
}
=head1 DESCRIPTION
The Archive::Zip module allows a Perl program to create, manipulate, read,
and write Zip archive files.
Zip archives can be created, or you can read from existing zip files.
Once created, they can be written to files, streams, or strings. Members
can be added, removed, extracted, replaced, rearranged, and enumerated.
They can also be renamed or have their dates, comments, or other attributes
queried or modified. Their data can be compressed or uncompressed as needed.
Members can be created from members in existing Zip files, or from existing
directories, files, or strings.
This module uses the L<Compress::Raw::Zlib> library to read and write the
compressed streams inside the files.
One can use L<Archive::Zip::MemberRead> to read the zip file archive members
as if they were files.
=head2 File Naming
Regardless of what your local file system uses for file naming, names in a
Zip file are in Unix format (I<forward> slashes (/) separating directory
names, etc.).
C<Archive::Zip> tries to be consistent with file naming conventions, and will
translate back and forth between native and Zip file names.
However, it can't guess which format names are in. So two rules control what
kind of file name you must pass various routines:
=over 4
=item Names of files are in local format.
C<File::Spec> and C<File::Basename> are used for various file
operations. When you're referring to a file on your system, use its
file naming conventions.
=item Names of archive members are in Unix format.
This applies to every method that refers to an archive member, or
provides a name for new archive members. The C<extract()> methods
that can take one or two names will convert from local to zip names
if you call them with a single name.
=back
=head2 Archive::Zip Object Model
=head2 Overview
Archive::Zip::Archive objects are what you ordinarily deal with.
These maintain the structure of a zip file, without necessarily
holding data. When a zip is read from a disk file, the (possibly
compressed) data still lives in the file, not in memory. Archive
members hold information about the individual members, but not
(usually) the actual member data. When the zip is written to a
(different) file, the member data is compressed or copied as needed.
It is possible to make archive members whose data is held in a string
in memory, but this is not done when a zip file is read. Directory
members don't have any data.
=head2 Inheritance
Exporter
Archive::Zip Common base class, has defs.
Archive::Zip::Archive A Zip archive.
Archive::Zip::Member Abstract superclass for all members.
Archive::Zip::StringMember Member made from a string
Archive::Zip::FileMember Member made from an external file
Archive::Zip::ZipFileMember Member that lives in a zip file
Archive::Zip::NewFileMember Member whose data is in a file
Archive::Zip::DirectoryMember Member that is a directory
=head1 EXPORTS
=over 4
=item :CONSTANTS
Exports the following constants:
FA_MSDOS FA_UNIX GPBF_ENCRYPTED_MASK
GPBF_DEFLATING_COMPRESSION_MASK GPBF_HAS_DATA_DESCRIPTOR_MASK
COMPRESSION_STORED COMPRESSION_DEFLATED IFA_TEXT_FILE_MASK
IFA_TEXT_FILE IFA_BINARY_FILE COMPRESSION_LEVEL_NONE
COMPRESSION_LEVEL_DEFAULT COMPRESSION_LEVEL_FASTEST
COMPRESSION_LEVEL_BEST_COMPRESSION
=item :MISC_CONSTANTS
Exports the following constants (only necessary for extending the
module):
FA_AMIGA FA_VAX_VMS FA_VM_CMS FA_ATARI_ST FA_OS2_HPFS
FA_MACINTOSH FA_Z_SYSTEM FA_CPM FA_WINDOWS_NTFS
GPBF_IMPLODING_8K_SLIDING_DICTIONARY_MASK
GPBF_IMPLODING_3_SHANNON_FANO_TREES_MASK
GPBF_IS_COMPRESSED_PATCHED_DATA_MASK COMPRESSION_SHRUNK
DEFLATING_COMPRESSION_NORMAL DEFLATING_COMPRESSION_MAXIMUM
DEFLATING_COMPRESSION_FAST DEFLATING_COMPRESSION_SUPER_FAST
COMPRESSION_REDUCED_1 COMPRESSION_REDUCED_2 COMPRESSION_REDUCED_3
COMPRESSION_REDUCED_4 COMPRESSION_IMPLODED COMPRESSION_TOKENIZED
COMPRESSION_DEFLATED_ENHANCED
COMPRESSION_PKWARE_DATA_COMPRESSION_LIBRARY_IMPLODED
=item :ERROR_CODES
Explained below. Returned from most methods.
AZ_OK AZ_STREAM_END AZ_ERROR AZ_FORMAT_ERROR AZ_IO_ERROR
=back
=head1 ERROR CODES
Many of the methods in Archive::Zip return error codes. These are implemented
as inline subroutines, using the C<use constant> pragma. They can be imported
into your namespace using the C<:ERROR_CODES> tag:
use Archive::Zip qw( :ERROR_CODES );
...
unless ( $zip->read( 'myfile.zip' ) == AZ_OK ) {
die "whoops!";
}
=over 4
=item AZ_OK (0)
Everything is fine.
=item AZ_STREAM_END (1)
The read stream (or central directory) ended normally.
=item AZ_ERROR (2)
There was some generic kind of error.
=item AZ_FORMAT_ERROR (3)
There is a format error in a ZIP file being read.
=item AZ_IO_ERROR (4)
There was an IO error.
=back
=head2 Compression
Archive::Zip allows each member of a ZIP file to be compressed (using the
Deflate algorithm) or uncompressed.
Other compression algorithms that some versions of ZIP have been able to
produce are not supported. Each member has two compression methods: the
one it's stored as (this is always COMPRESSION_STORED for string and external
file members), and the one you desire for the member in the zip file.
These can be different, of course, so you can make a zip member that is not
compressed out of one that is, and vice versa.
You can inquire about the current compression and set the desired
compression method:
my $member = $zip->memberNamed( 'xyz.txt' );
$member->compressionMethod(); # return current compression
# set to read uncompressed
$member->desiredCompressionMethod( COMPRESSION_STORED );
# set to read compressed
$member->desiredCompressionMethod( COMPRESSION_DEFLATED );
There are two different compression methods:
=over 4
=item COMPRESSION_STORED
File is stored (no compression)
=item COMPRESSION_DEFLATED
File is Deflated
=back
=head2 Compression Levels
If a member's desiredCompressionMethod is COMPRESSION_DEFLATED, you
can choose different compression levels. This choice may affect the
speed of compression and decompression, as well as the size of the
compressed member data.
$member->desiredCompressionLevel( 9 );
The levels given can be:
=over 4
=item 0 or COMPRESSION_LEVEL_NONE
This is the same as saying
$member->desiredCompressionMethod( COMPRESSION_STORED );
=item 1 .. 9
1 gives the best speed and worst compression, and 9 gives the
best compression and worst speed.
=item COMPRESSION_LEVEL_FASTEST
This is a synonym for level 1.
=item COMPRESSION_LEVEL_BEST_COMPRESSION
This is a synonym for level 9.
=item COMPRESSION_LEVEL_DEFAULT
This gives a good compromise between speed and compression,
and is currently equivalent to 6 (this is in the zlib code).
This is the level that will be used if not specified.
=back
=head1 Archive::Zip Methods
The Archive::Zip class (and its invisible subclass Archive::Zip::Archive)
implement generic zip file functionality. Creating a new Archive::Zip object
actually makes an Archive::Zip::Archive object, but you don't have to worry
about this unless you're subclassing.
=head2 Constructor
=over 4
=item new( [$fileName] )
Make a new, empty zip archive.
my $zip = Archive::Zip->new();
If an additional argument is passed, new() will call read()
to read the contents of an archive:
my $zip = Archive::Zip->new( 'xyz.zip' );
If a filename argument is passed and the read fails for any
reason, new will return undef. For this reason, it may be
better to call read separately.
=back
=head2 Zip Archive Utility Methods
These Archive::Zip methods may be called as functions or as object
methods. Do not call them as class methods:
$zip = Archive::Zip->new();
$crc = Archive::Zip::computeCRC32( 'ghijkl' ); # OK
$crc = $zip->computeCRC32( 'ghijkl' ); # also OK
$crc = Archive::Zip->computeCRC32( 'ghijkl' ); # NOT OK
=over 4
=item Archive::Zip::computeCRC32( $string [, $crc] )
This is a utility function that uses the Compress::Raw::Zlib CRC
routine to compute a CRC-32. You can get the CRC of a string:
$crc = Archive::Zip::computeCRC32( $string );
Or you can compute the running CRC:
$crc = 0;
$crc = Archive::Zip::computeCRC32( 'abcdef', $crc );
$crc = Archive::Zip::computeCRC32( 'ghijkl', $crc );
=item Archive::Zip::setChunkSize( $number )
Report or change chunk size used for reading and writing.
This can make big differences in dealing with large files.
Currently, this defaults to 32K. This also changes the chunk
size used for Compress::Raw::Zlib. You must call setChunkSize()
before reading or writing. This is not exportable, so you
must call it like:
Archive::Zip::setChunkSize( 4096 );
or as a method on a zip (though this is a global setting).
Returns old chunk size.
=item Archive::Zip::chunkSize()
Returns the current chunk size:
my $chunkSize = Archive::Zip::chunkSize();
=item Archive::Zip::setErrorHandler( \&subroutine )
Change the subroutine called with error strings. This
defaults to \&Carp::carp, but you may want to change it to
get the error strings. This is not exportable, so you must
call it like:
Archive::Zip::setErrorHandler( \&myErrorHandler );
If myErrorHandler is undef, resets handler to default.
Returns old error handler. Note that if you call Carp::carp
or a similar routine or if you're chaining to the default
error handler from your error handler, you may want to
increment the number of caller levels that are skipped (do
not just set it to a number):
$Carp::CarpLevel++;
=item Archive::Zip::tempFile( [$tmpdir] )
Create a uniquely named temp file. It will be returned open
for read/write. If C<$tmpdir> is given, it is used as the
name of a directory to create the file in. If not given,
creates the file using C<File::Spec::tmpdir()>. Generally, you can
override this choice using the
$ENV{TMPDIR}
environment variable. But see the L<File::Spec|File::Spec>
documentation for your system. Note that on many systems, if you're
running in taint mode, then you must make sure that C<$ENV{TMPDIR}> is
untainted for it to be used.
Will I<NOT> create C<$tmpdir> if it doesn't exist (this is a change
from prior versions!). Returns file handle and name:
my ($fh, $name) = Archive::Zip::tempFile();
my ($fh, $name) = Archive::Zip::tempFile('myTempDir');
my $fh = Archive::Zip::tempFile(); # if you don't need the name
=back
=head2 Zip Archive Accessors
=over 4
=item members()
Return a copy of the members array
my @members = $zip->members();
=item numberOfMembers()
Return the number of members I have
=item memberNames()
Return a list of the (internal) file names of the zip members
=item memberNamed( $string )
Return ref to member whose filename equals given filename or
undef. C<$string> must be in Zip (Unix) filename format.
=item membersMatching( $regex )
Return array of members whose filenames match given regular
expression in list context. Returns number of matching
members in scalar context.
my @textFileMembers = $zip->membersMatching( '.*\.txt' );
# or
my $numberOfTextFiles = $zip->membersMatching( '.*\.txt' );
=item diskNumber()
Return the disk that I start on. Not used for writing zips,
but might be interesting if you read a zip in. This should be
0, as Archive::Zip does not handle multi-volume archives.
=item diskNumberWithStartOfCentralDirectory()
Return the disk number that holds the beginning of the
central directory. Not used for writing zips, but might be
interesting if you read a zip in. This should be 0, as
Archive::Zip does not handle multi-volume archives.
=item numberOfCentralDirectoriesOnThisDisk()
Return the number of CD structures in the zipfile last read in.
Not used for writing zips, but might be interesting if you read a zip
in.
=item numberOfCentralDirectories()
Return the number of CD structures in the zipfile last read in.
Not used for writing zips, but might be interesting if you read a zip
in.
=item centralDirectorySize()
Returns central directory size, as read from an external zip
file. Not used for writing zips, but might be interesting if
you read a zip in.
=item centralDirectoryOffsetWRTStartingDiskNumber()
Returns the offset into the zip file where the CD begins. Not
used for writing zips, but might be interesting if you read a
zip in.
=item zipfileComment( [$string] )
Get or set the zipfile comment. Returns the old comment.
print $zip->zipfileComment();
$zip->zipfileComment( 'New Comment' );
=item eocdOffset()
Returns the (unexpected) number of bytes between where the
EOCD was found and where it expected to be. This is normally
0, but would be positive if something (a virus, perhaps) had
added bytes somewhere before the EOCD. Not used for writing
zips, but might be interesting if you read a zip in. Here is
an example of how you can diagnose this:
my $zip = Archive::Zip->new('somefile.zip');
if ($zip->eocdOffset())
{
warn "A virus has added ", $zip->eocdOffset, " bytes of garbage\n";
}
The C<eocdOffset()> is used to adjust the starting position of member
headers, if necessary.
=item fileName()
Returns the name of the file last read from. If nothing has
been read yet, returns an empty string; if read from a file
handle, returns the handle in string form.
=back
=head2 Zip Archive Member Operations
Various operations on a zip file modify members. When a member is
passed as an argument, you can either use a reference to the member
itself, or the name of a member. Of course, using the name requires
that names be unique within a zip (this is not enforced).
=over 4
=item removeMember( $memberOrName )
Remove and return the given member, or match its name and
remove it. Returns undef if member or name doesn't exist in this
Zip. No-op if member does not belong to this zip.
=item replaceMember( $memberOrName, $newMember )
Remove and return the given member, or match its name and
remove it. Replace with new member. Returns undef if member or
name doesn't exist in this Zip, or if C<$newMember> is undefined.
It is an (undiagnosed) error to provide a C<$newMember> that is a
member of the zip being modified.
my $member1 = $zip->removeMember( 'xyz' );
my $member2 = $zip->replaceMember( 'abc', $member1 );
# now, $member2 (named 'abc') is not in $zip,
# and $member1 (named 'xyz') is, having taken $member2's place.
=item extractMember( $memberOrName [, $extractedName ] )
Extract the given member, or match its name and extract it.
Returns undef if member doesn't exist in this Zip. If
optional second arg is given, use it as the name of the
extracted member. Otherwise, the internal filename of the
member is used as the name of the extracted file or
directory.
If you pass C<$extractedName>, it should be in the local file
system's format.
All necessary directories will be created. Returns C<AZ_OK>
on success.
=item extractMemberWithoutPaths( $memberOrName [, $extractedName ] )
Extract the given member, or match its name and extract it.
Does not use path information (extracts into the current
directory). Returns undef if member doesn't exist in this
Zip.
If optional second arg is given, use it as the name of the
extracted member (its paths will be deleted too). Otherwise,
the internal filename of the member (minus paths) is used as
the name of the extracted file or directory. Returns C<AZ_OK>
on success.
=item addMember( $member )
Append a member (possibly from another zip file) to the zip
file. Returns the new member. Generally, you will use
addFile(), addDirectory(), addFileOrDirectory(), addString(),
or read() to add members.
# Move member named 'abc' to end of zip:
my $member = $zip->removeMember( 'abc' );
$zip->addMember( $member );
=item updateMember( $memberOrName, $fileName )
Update a single member from the file or directory named C<$fileName>.
Returns the (possibly added or updated) member, if any; C<undef> on
errors.
The comparison is based on C<lastModTime()> and (in the case of a
non-directory) the size of the file.
=item addFile( $fileName [, $newName ] )
Append a member whose data comes from an external file,
returning the member or undef. The member will have its file
name set to the name of the external file, and its
desiredCompressionMethod set to COMPRESSION_DEFLATED. The
file attributes and last modification time will be set from
the file.
If the name given does not represent a readable plain file or
symbolic link, undef will be returned. C<$fileName> must be
in the format required for the local file system.
The optional C<$newName> argument sets the internal file name
to something different than the given $fileName. C<$newName>,
if given, must be in Zip name format (i.e. Unix).
The text mode bit will be set if the contents appears to be
text (as returned by the C<-T> perl operator).
I<NOTE> that you shouldn't (generally) use absolute path names
in zip member names, as this will cause problems with some zip
tools as well as introduce a security hole and make the zip
harder to use.
=item addDirectory( $directoryName [, $fileName ] )
Append a member created from the given directory name. The
directory name does not have to name an existing directory.
If the named directory exists, the file modification time and
permissions are set from the existing directory, otherwise
they are set to now and permissive default permissions.
C<$directoryName> must be in local file system format.
The optional second argument sets the name of the archive
member (which defaults to C<$directoryName>). If given, it
must be in Zip (Unix) format.
Returns the new member.
=item addFileOrDirectory( $name [, $newName ] )
Append a member from the file or directory named $name. If
$newName is given, use it for the name of the new member.
Will add or remove trailing slashes from $newName as needed.
C<$name> must be in local file system format.
The optional second argument sets the name of the archive
member (which defaults to C<$name>). If given, it must be in
Zip (Unix) format.
=item addString( $stringOrStringRef, $name )
Append a member created from the given string or string
reference. The name is given by the second argument.
Returns the new member. The last modification time will be
set to now, and the file attributes will be set to permissive
defaults.
my $member = $zip->addString( 'This is a test', 'test.txt' );
=item contents( $memberOrMemberName [, $newContents ] )
Returns the uncompressed data for a particular member, or
undef.
print "xyz.txt contains " . $zip->contents( 'xyz.txt' );
Also can change the contents of a member:
$zip->contents( 'xyz.txt', 'This is the new contents' );
If called expecting an array as the return value, it will include
the status as the second value in the array.
($content, $status) = $zip->contents( 'xyz.txt');
=back
=head2 Zip Archive I/O operations
A Zip archive can be written to a file or file handle, or read from
one.
=over 4
=item writeToFileNamed( $fileName )
Write a zip archive to named file. Returns C<AZ_OK> on
success.
my $status = $zip->writeToFileNamed( 'xx.zip' );
die "error somewhere" if $status != AZ_OK;
Note that if you use the same name as an existing zip file
that you read in, you will clobber ZipFileMembers. So
instead, write to a different file name, then delete the
original.
If you use the C<overwrite()> or C<overwriteAs()> methods, you can
re-write the original zip in this way.
C<$fileName> should be a valid file name on your system.
=item writeToFileHandle( $fileHandle [, $seekable] )
Write a zip archive to a file handle. Return AZ_OK on
success. The optional second arg tells whether or not to try
to seek backwards to re-write headers. If not provided, it is
set if the Perl C<-f> test returns true. This could fail on
some operating systems, though.
my $fh = IO::File->new( 'someFile.zip', 'w' );
unless ( $zip->writeToFileHandle( $fh ) == AZ_OK ) {
# error handling
}
If you pass a file handle that is not seekable (like if
you're writing to a pipe or a socket), pass a false second
argument:
my $fh = IO::File->new( '| cat > somefile.zip', 'w' );
$zip->writeToFileHandle( $fh, 0 ); # fh is not seekable
If this method fails during the write of a member, that
member and all following it will return false from
C<wasWritten()>. See writeCentralDirectory() for a way to
deal with this.
If you want, you can write data to the file handle before
passing it to writeToFileHandle(); this could be used (for
instance) for making self-extracting archives. However, this
only works reliably when writing to a real file (as opposed
to STDOUT or some other possible non-file).
See examples/selfex.pl for how to write a self-extracting
archive.
=item writeCentralDirectory( $fileHandle [, $offset ] )
Writes the central directory structure to the given file
handle.
Returns AZ_OK on success. If given an $offset, will
seek to that point before writing. This can be used for
recovery in cases where writeToFileHandle or writeToFileNamed
returns an IO error because of running out of space on the
destination file.
You can truncate the zip by seeking backwards and then writing the
directory:
my $fh = IO::File->new( 'someFile.zip', 'w' );
my $retval = $zip->writeToFileHandle( $fh );
if ( $retval == AZ_IO_ERROR ) {
my @unwritten = grep { not $_->wasWritten() } $zip->members();
if (@unwritten) {
$zip->removeMember( $member ) foreach my $member ( @unwritten );
$zip->writeCentralDirectory( $fh,
$unwritten[0]->writeLocalHeaderRelativeOffset());
}
}
=item overwriteAs( $newName )
Write the zip to the specified file, as safely as possible.
This is done by first writing to a temp file, then renaming
the original if it exists, then renaming the temp file, then
deleting the renamed original if it exists. Returns AZ_OK if
successful.
=item overwrite()
Write back to the original zip file. See overwriteAs() above.
If the zip was not ever read from a file, this generates an
error.
=item read( $fileName )
Read zipfile headers from a zip file, appending new members.
Returns C<AZ_OK> or error code.
my $zipFile = Archive::Zip->new();
my $status = $zipFile->read( '/some/FileName.zip' );
=item readFromFileHandle( $fileHandle, $filename )
Read zipfile headers from an already-opened file handle,
appending new members. Does not close the file handle.
Returns C<AZ_OK> or error code. Note that this requires a
seekable file handle; reading from a stream is not yet
supported.
my $fh = IO::File->new( '/some/FileName.zip', 'r' );
my $zip1 = Archive::Zip->new();
my $status = $zip1->readFromFileHandle( $fh );
my $zip2 = Archive::Zip->new();
$status = $zip2->readFromFileHandle( $fh );
=back
=head2 Zip Archive Tree operations
These used to be in Archive::Zip::Tree but got moved into
Archive::Zip. They enable operation on an entire tree of members or
files.
A usage example:
use Archive::Zip;
my $zip = Archive::Zip->new();
# add all readable files and directories below . as xyz/*
$zip->addTree( '.', 'xyz' );
# add all readable plain files below /abc as def/*
$zip->addTree( '/abc', 'def', sub { -f && -r } );
# add all .c files below /tmp as stuff/*
$zip->addTreeMatching( '/tmp', 'stuff', '\.c$' );
# add all .o files below /tmp as stuff/* if they aren't writable
$zip->addTreeMatching( '/tmp', 'stuff', '\.o$', sub { ! -w } );
# add all .so files below /tmp that are smaller than 200 bytes as stuff/*
$zip->addTreeMatching( '/tmp', 'stuff', '\.o$', sub { -s < 200 } );
# and write them into a file
$zip->writeToFileNamed('xxx.zip');
# now extract the same files into /tmpx
$zip->extractTree( 'stuff', '/tmpx' );
=over 4
=item $zip->addTree( $root, $dest [,$pred] ) -- Add tree of files to a zip
C<$root> is the root of the tree of files and directories to be
added. It is a valid directory name on your system. C<$dest> is
the name for the root in the zip file (undef or blank means
to use relative pathnames). It is a valid ZIP directory name
(that is, it uses forward slashes (/) for separating
directory components). C<$pred> is an optional subroutine
reference to select files: it is passed the name of the
prospective file or directory using C<$_>, and if it returns
true, the file or directory will be included. The default is
to add all readable files and directories. For instance,
using
my $pred = sub { /\.txt/ };
$zip->addTree( '.', '', $pred );
will add all the .txt files in and below the current
directory, using relative names, and making the names
identical in the zipfile:
original name zip member name
./xyz xyz
./a/ a/
./a/b a/b
To translate absolute to relative pathnames, just pass them
in: $zip->addTree( '/c/d', 'a' );
original name zip member name
/c/d/xyz a/xyz
/c/d/a/ a/a/
/c/d/a/b a/a/b
Returns AZ_OK on success. Note that this will not follow
symbolic links to directories. Note also that this does not
check for the validity of filenames.
Note that you generally I<don't> want to make zip archive member names
absolute.
=item $zip->addTreeMatching( $root, $dest, $pattern [,$pred] )
$root is the root of the tree of files and directories to be
added $dest is the name for the root in the zip file (undef
means to use relative pathnames) $pattern is a (non-anchored)
regular expression for filenames to match $pred is an
optional subroutine reference to select files: it is passed
the name of the prospective file or directory in C<$_>, and
if it returns true, the file or directory will be included.
The default is to add all readable files and directories. To
add all files in and below the current dirctory whose names
end in C<.pl>, and make them extract into a subdirectory
named C<xyz>, do this:
$zip->addTreeMatching( '.', 'xyz', '\.pl$' )
To add all I<writable> files in and below the dirctory named
C</abc> whose names end in C<.pl>, and make them extract into
a subdirectory named C<xyz>, do this:
$zip->addTreeMatching( '/abc', 'xyz', '\.pl$', sub { -w } )
Returns AZ_OK on success. Note that this will not follow
symbolic links to directories.
=item $zip->updateTree( $root, [ $dest, [ $pred [, $mirror]]] );
Update a zip file from a directory tree.
C<updateTree()> takes the same arguments as C<addTree()>, but first
checks to see whether the file or directory already exists in the zip
file, and whether it has been changed.
If the fourth argument C<$mirror> is true, then delete all my members
if corresponding files weren't found.
Returns an error code or AZ_OK if all is well.
=item $zip->extractTree()
=item $zip->extractTree( $root )
=item $zip->extractTree( $root, $dest )
=item $zip->extractTree( $root, $dest, $volume )
If you don't give any arguments at all, will extract all the
files in the zip with their original names.
If you supply one argument for C<$root>, C<extractTree> will extract
all the members whose names start with C<$root> into the current
directory, stripping off C<$root> first.
C<$root> is in Zip (Unix) format.
For instance,
$zip->extractTree( 'a' );
when applied to a zip containing the files:
a/x a/b/c ax/d/e d/e will extract:
a/x as ./x
a/b/c as ./b/c
If you give two arguments, C<extractTree> extracts all the members
whose names start with C<$root>. It will translate C<$root> into
C<$dest> to construct the destination file name.
C<$root> and C<$dest> are in Zip (Unix) format.
For instance,
$zip->extractTree( 'a', 'd/e' );
when applied to a zip containing the files:
a/x a/b/c ax/d/e d/e will extract:
a/x to d/e/x
a/b/c to d/e/b/c and ignore ax/d/e and d/e
If you give three arguments, C<extractTree> extracts all the members
whose names start with C<$root>. It will translate C<$root> into
C<$dest> to construct the destination file name, and then it will
convert to local file system format, using C<$volume> as the name of
the destination volume.
C<$root> and C<$dest> are in Zip (Unix) format.
C<$volume> is in local file system format.
For instance, under Windows,
$zip->extractTree( 'a', 'd/e', 'f:' );
when applied to a zip containing the files:
a/x a/b/c ax/d/e d/e will extract:
a/x to f:d/e/x
a/b/c to f:d/e/b/c and ignore ax/d/e and d/e
If you want absolute paths (the prior example used paths relative to
the current directory on the destination volume, you can specify these
in C<$dest>:
$zip->extractTree( 'a', '/d/e', 'f:' );
when applied to a zip containing the files:
a/x a/b/c ax/d/e d/e will extract:
a/x to f:\d\e\x
a/b/c to f:\d\e\b\c and ignore ax/d/e and d/e
Returns an error code or AZ_OK if everything worked OK.
=back
=head1 MEMBER OPERATIONS
=head2 Member Class Methods
Several constructors allow you to construct members without adding
them to a zip archive. These work the same as the addFile(),
addDirectory(), and addString() zip instance methods described above,
but they don't add the new members to a zip.
=over 4
=item Archive::Zip::Member->newFromString( $stringOrStringRef [, $fileName] )
Construct a new member from the given string. Returns undef
on error.
my $member = Archive::Zip::Member->newFromString( 'This is a test',
'xyz.txt' );
=item newFromFile( $fileName )
Construct a new member from the given file. Returns undef on
error.
my $member = Archive::Zip::Member->newFromFile( 'xyz.txt' );
=item newDirectoryNamed( $directoryName [, $zipname ] )
Construct a new member from the given directory.
C<$directoryName> must be a valid name on your file system; it doesn't
have to exist.
If given, C<$zipname> will be the name of the zip member; it must be a
valid Zip (Unix) name. If not given, it will be converted from
C<$directoryName>.
Returns undef on error.
my $member = Archive::Zip::Member->newDirectoryNamed( 'CVS/' );
=back
=head2 Member Simple accessors
These methods get (and/or set) member attribute values.
=over 4
=item versionMadeBy()
Gets the field from the member header.
=item fileAttributeFormat( [$format] )
Gets or sets the field from the member header. These are
C<FA_*> values.
=item versionNeededToExtract()
Gets the field from the member header.
=item bitFlag()
Gets the general purpose bit field from the member header.
This is where the C<GPBF_*> bits live.
=item compressionMethod()
Returns the member compression method. This is the method
that is currently being used to compress the member data.
This will be COMPRESSION_STORED for added string or file
members, or any of the C<COMPRESSION_*> values for members
from a zip file. However, this module can only handle members
whose data is in COMPRESSION_STORED or COMPRESSION_DEFLATED
format.
=item desiredCompressionMethod( [$method] )
Get or set the member's C<desiredCompressionMethod>. This is
the compression method that will be used when the member is
written. Returns prior desiredCompressionMethod. Only
COMPRESSION_DEFLATED or COMPRESSION_STORED are valid
arguments. Changing to COMPRESSION_STORED will change the
member desiredCompressionLevel to 0; changing to
COMPRESSION_DEFLATED will change the member
desiredCompressionLevel to COMPRESSION_LEVEL_DEFAULT.
=item desiredCompressionLevel( [$method] )
Get or set the member's desiredCompressionLevel This is the
method that will be used to write. Returns prior
desiredCompressionLevel. Valid arguments are 0 through 9,
COMPRESSION_LEVEL_NONE, COMPRESSION_LEVEL_DEFAULT,
COMPRESSION_LEVEL_BEST_COMPRESSION, and
COMPRESSION_LEVEL_FASTEST. 0 or COMPRESSION_LEVEL_NONE will
change the desiredCompressionMethod to COMPRESSION_STORED.
All other arguments will change the desiredCompressionMethod
to COMPRESSION_DEFLATED.
=item externalFileName()
Return the member's external file name, if any, or undef.
=item fileName()
Get or set the member's internal filename. Returns the
(possibly new) filename. Names will have backslashes
converted to forward slashes, and will have multiple
consecutive slashes converted to single ones.
=item lastModFileDateTime()
Return the member's last modification date/time stamp in
MS-DOS format.
=item lastModTime()
Return the member's last modification date/time stamp,
converted to unix localtime format.
print "Mod Time: " . scalar( localtime( $member->lastModTime() ) );
=item setLastModFileDateTimeFromUnix()
Set the member's lastModFileDateTime from the given unix
time.
$member->setLastModFileDateTimeFromUnix( time() );
=item internalFileAttributes()
Return the internal file attributes field from the zip
header. This is only set for members read from a zip file.
=item externalFileAttributes()
Return member attributes as read from the ZIP file. Note that
these are NOT UNIX!
=item unixFileAttributes( [$newAttributes] )
Get or set the member's file attributes using UNIX file
attributes. Returns old attributes.
my $oldAttribs = $member->unixFileAttributes( 0666 );
Note that the return value has more than just the file
permissions, so you will have to mask off the lowest bits for
comparisions.
=item localExtraField( [$newField] )
Gets or sets the extra field that was read from the local
header. This is not set for a member from a zip file until
after the member has been written out. The extra field must
be in the proper format.
=item cdExtraField( [$newField] )
Gets or sets the extra field that was read from the central
directory header. The extra field must be in the proper
format.
=item extraFields()
Return both local and CD extra fields, concatenated.
=item fileComment( [$newComment] )
Get or set the member's file comment.
=item hasDataDescriptor()
Get or set the data descriptor flag. If this is set, the
local header will not necessarily have the correct data
sizes. Instead, a small structure will be stored at the end
of the member data with these values. This should be
transparent in normal operation.
=item crc32()
Return the CRC-32 value for this member. This will not be set
for members that were constructed from strings or external
files until after the member has been written.
=item crc32String()
Return the CRC-32 value for this member as an 8 character
printable hex string. This will not be set for members that
were constructed from strings or external files until after
the member has been written.
=item compressedSize()
Return the compressed size for this member. This will not be
set for members that were constructed from strings or
external files until after the member has been written.
=item uncompressedSize()
Return the uncompressed size for this member.
=item isEncrypted()
Return true if this member is encrypted. The Archive::Zip
module does not currently create or extract encrypted
members.
=item isTextFile( [$flag] )
Returns true if I am a text file. Also can set the status if
given an argument (then returns old state). Note that this
module does not currently do anything with this flag upon
extraction or storage. That is, bytes are stored in native
format whether or not they came from a text file.
=item isBinaryFile()
Returns true if I am a binary file. Also can set the status
if given an argument (then returns old state). Note that this
module does not currently do anything with this flag upon
extraction or storage. That is, bytes are stored in native
format whether or not they came from a text file.
=item extractToFileNamed( $fileName )
Extract me to a file with the given name. The file will be
created with default modes. Directories will be created as
needed.
The C<$fileName> argument should be a valid file name on your
file system.
Returns AZ_OK on success.
=item isDirectory()
Returns true if I am a directory.
=item writeLocalHeaderRelativeOffset()
Returns the file offset in bytes the last time I was written.
=item wasWritten()
Returns true if I was successfully written. Reset at the
beginning of a write attempt.
=back
=head2 Low-level member data reading
It is possible to use lower-level routines to access member data
streams, rather than the extract* methods and contents(). For
instance, here is how to print the uncompressed contents of a member
in chunks using these methods:
my ( $member, $status, $bufferRef );
$member = $zip->memberNamed( 'xyz.txt' );
$member->desiredCompressionMethod( COMPRESSION_STORED );
$status = $member->rewindData();
die "error $status" unless $status == AZ_OK;
while ( ! $member->readIsDone() )
{
( $bufferRef, $status ) = $member->readChunk();
die "error $status"
if $status != AZ_OK && $status != AZ_STREAM_END;
# do something with $bufferRef:
print $$bufferRef;
}
$member->endRead();
=over 4
=item readChunk( [$chunkSize] )
This reads the next chunk of given size from the member's
data stream and compresses or uncompresses it as necessary,
returning a reference to the bytes read and a status. If size
argument is not given, defaults to global set by
Archive::Zip::setChunkSize. Status is AZ_OK on success until
the last chunk, where it returns AZ_STREAM_END. Returns C<(
\$bytes, $status)>.
my ( $outRef, $status ) = $self->readChunk();
print $$outRef if $status != AZ_OK && $status != AZ_STREAM_END;
=item rewindData()
Rewind data and set up for reading data streams or writing
zip files. Can take options for C<inflateInit()> or
C<deflateInit()>, but this isn't likely to be necessary.
Subclass overrides should call this method. Returns C<AZ_OK>
on success.
=item endRead()
Reset the read variables and free the inflater or deflater.
Must be called to close files, etc. Returns AZ_OK on success.
=item readIsDone()
Return true if the read has run out of data or errored out.
=item contents()
Return the entire uncompressed member data or undef in scalar
context. When called in array context, returns C<( $string,
$status )>; status will be AZ_OK on success:
my $string = $member->contents();
# or
my ( $string, $status ) = $member->contents();
die "error $status" unless $status == AZ_OK;
Can also be used to set the contents of a member (this may
change the class of the member):
$member->contents( "this is my new contents" );
=item extractToFileHandle( $fh )
Extract (and uncompress, if necessary) the member's contents
to the given file handle. Return AZ_OK on success.
=back
=head1 Archive::Zip::FileMember methods
The Archive::Zip::FileMember class extends Archive::Zip::Member. It is the
base class for both ZipFileMember and NewFileMember classes. This class adds
an C<externalFileName> and an C<fh> member to keep track of the external
file.
=over 4
=item externalFileName()
Return the member's external filename.
=item fh()
Return the member's read file handle. Automatically opens file if
necessary.
=back
=head1 Archive::Zip::ZipFileMember methods
The Archive::Zip::ZipFileMember class represents members that have been read
from external zip files.
=over 4
=item diskNumberStart()
Returns the disk number that the member's local header resides in.
Should be 0.
=item localHeaderRelativeOffset()
Returns the offset into the zip file where the member's local header
is.
=item dataOffset()
Returns the offset from the beginning of the zip file to the member's
data.
=back
=head1 REQUIRED MODULES
L<Archive::Zip> requires several other modules:
L<Carp>
L<Compress::Raw::Zlib>
L<Cwd>
L<File::Basename>
L<File::Copy>
L<File::Find>
L<File::Path>
L<File::Spec>
L<IO::File>
L<IO::Seekable>
L<Time::Local>
=head1 BUGS AND CAVEATS
=head2 When not to use Archive::Zip
If you are just going to be extracting zips (and/or other archives) you
are recommended to look at using L<Archive::Extract> instead, as it is much
easier to use and factors out archive-specific functionality.
=head2 Try to avoid IO::Scalar
One of the most common ways to use Archive::Zip is to generate Zip files
in-memory. Most people have use L<IO::Scalar> for this purpose.
Unfortunately, as of 1.11 this module no longer works with L<IO::Scalar>
as it incorrectly implements seeking.
Anybody using L<IO::Scalar> should consider porting to L<IO::String>,
which is smaller, lighter, and is implemented to be perfectly compatible
with regular seekable filehandles.
Support for L<IO::Scalar> most likely will B<not> be restored in the
future, as L<IO::Scalar> itself cannot change the way it is implemented
due to back-compatibility issues.
=head1 TO DO
* auto-choosing storing vs compression
* extra field hooks (see notes.txt)
* check for dups on addition/renaming?
* Text file extraction (line end translation)
* Reading zip files from non-seekable inputs
(Perhaps by proxying through IO::String?)
* separate unused constants into separate module
* cookbook style docs
* Handle tainted paths correctly
* Work on better compatability with other IO:: modules
=head1 SUPPORT
Bugs should be reported via the CPAN bug tracker
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Archive-Zip>
For other issues contact the maintainer
=head1 AUTHOR
Adam Kennedy E<lt>[email protected]<gt>
Previously maintained by Steve Peters E<lt>[email protected]<gt>.
File attributes code by Maurice Aubrey E<lt>[email protected]<gt>.
Originally by Ned Konz E<lt>[email protected]<gt>.
=head1 COPYRIGHT
Some parts copyright 2006 - 2009 Adam Kennedy.
Some parts copyright 2005 Steve Peters.
Original work copyright 2000 - 2004 Ned Konz.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
Look at L<Archive::Zip::MemberRead> which is a wrapper that allows one to
read Zip archive members as if they were files.
L<Compress::Raw::Zlib>, L<Archive::Tar>, L<Archive::Extract>
There is a Japanese translation of this
document at L<http://www.memb.jp/~deq/perl/doc-ja/Archive-Zip.html>
that was done by DEQ E<lt>[email protected]<gt> . Thanks!
=cut
ARCHIVE_ZIP
$fatpacked{"Archive/Zip/Archive.pm"} = <<'ARCHIVE_ZIP_ARCHIVE';
package Archive::Zip::Archive;
# Represents a generic ZIP archive
use strict;
use File::Path;
use File::Find ();
use File::Spec ();
use File::Copy ();
use File::Basename;
use Cwd;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw( Archive::Zip );
}
use Archive::Zip qw(
:CONSTANTS
:ERROR_CODES
:PKZIP_CONSTANTS
:UTILITY_METHODS
);
# Note that this returns undef on read errors, else new zip object.
sub new {
my $class = shift;
my $self = bless(
{
'diskNumber' => 0,
'diskNumberWithStartOfCentralDirectory' => 0,
'numberOfCentralDirectoriesOnThisDisk' => 0, # shld be # of members
'numberOfCentralDirectories' => 0, # shld be # of members
'centralDirectorySize' => 0, # must re-compute on write
'centralDirectoryOffsetWRTStartingDiskNumber' =>
0, # must re-compute
'writeEOCDOffset' => 0,
'writeCentralDirectoryOffset' => 0,
'zipfileComment' => '',
'eocdOffset' => 0,
'fileName' => ''
},
$class
);
$self->{'members'} = [];
my $fileName = ( ref( $_[0] ) eq 'HASH' ) ? shift->{filename} : shift;
if ($fileName) {
my $status = $self->read($fileName);
return $status == AZ_OK ? $self : undef;
}
return $self;
}
sub storeSymbolicLink {
my $self = shift;
$self->{'storeSymbolicLink'} = shift;
}
sub members {
@{ shift->{'members'} };
}
sub numberOfMembers {
scalar( shift->members() );
}
sub memberNames {
my $self = shift;
return map { $_->fileName() } $self->members();
}
# return ref to member with given name or undef
sub memberNamed {
my $self = shift;
my $fileName = ( ref( $_[0] ) eq 'HASH' ) ? shift->{zipName} : shift;
foreach my $member ( $self->members() ) {
return $member if $member->fileName() eq $fileName;
}
return undef;
}
sub membersMatching {
my $self = shift;
my $pattern = ( ref( $_[0] ) eq 'HASH' ) ? shift->{regex} : shift;
return grep { $_->fileName() =~ /$pattern/ } $self->members();
}
sub diskNumber {
shift->{'diskNumber'};
}
sub diskNumberWithStartOfCentralDirectory {
shift->{'diskNumberWithStartOfCentralDirectory'};
}
sub numberOfCentralDirectoriesOnThisDisk {
shift->{'numberOfCentralDirectoriesOnThisDisk'};
}
sub numberOfCentralDirectories {
shift->{'numberOfCentralDirectories'};
}
sub centralDirectorySize {
shift->{'centralDirectorySize'};
}
sub centralDirectoryOffsetWRTStartingDiskNumber {
shift->{'centralDirectoryOffsetWRTStartingDiskNumber'};
}
sub zipfileComment {
my $self = shift;
my $comment = $self->{'zipfileComment'};
if (@_) {
my $new_comment = ( ref( $_[0] ) eq 'HASH' ) ? shift->{comment} : shift;
$self->{'zipfileComment'} = pack( 'C0a*', $new_comment ); # avoid unicode
}
return $comment;
}
sub eocdOffset {
shift->{'eocdOffset'};
}
# Return the name of the file last read.
sub fileName {
shift->{'fileName'};
}
sub removeMember {
my $self = shift;
my $member = ( ref( $_[0] ) eq 'HASH' ) ? shift->{memberOrZipName} : shift;
$member = $self->memberNamed($member) unless ref($member);
return undef unless $member;
my @newMembers = grep { $_ != $member } $self->members();
$self->{'members'} = \@newMembers;
return $member;
}
sub replaceMember {
my $self = shift;
my ( $oldMember, $newMember );
if ( ref( $_[0] ) eq 'HASH' ) {
$oldMember = $_[0]->{memberOrZipName};
$newMember = $_[0]->{newMember};
}
else {
( $oldMember, $newMember ) = @_;
}
$oldMember = $self->memberNamed($oldMember) unless ref($oldMember);
return undef unless $oldMember;
return undef unless $newMember;
my @newMembers =
map { ( $_ == $oldMember ) ? $newMember : $_ } $self->members();
$self->{'members'} = \@newMembers;
return $oldMember;
}
sub extractMember {
my $self = shift;
my ( $member, $name );
if ( ref( $_[0] ) eq 'HASH' ) {
$member = $_[0]->{memberOrZipName};
$name = $_[0]->{name};
}
else {
( $member, $name ) = @_;
}
$member = $self->memberNamed($member) unless ref($member);
return _error('member not found') unless $member;
my $originalSize = $member->compressedSize();
my ( $volumeName, $dirName, $fileName );
if ( defined($name) ) {
( $volumeName, $dirName, $fileName ) = File::Spec->splitpath($name);
$dirName = File::Spec->catpath( $volumeName, $dirName, '' );
}
else {
$name = $member->fileName();
( $dirName = $name ) =~ s{[^/]*$}{};
$dirName = Archive::Zip::_asLocalName($dirName);
$name = Archive::Zip::_asLocalName($name);
}
if ( $dirName && !-d $dirName ) {
mkpath($dirName);
return _ioError("can't create dir $dirName") if ( !-d $dirName );
}
my $rc = $member->extractToFileNamed( $name, @_ );
# TODO refactor this fix into extractToFileNamed()
$member->{'compressedSize'} = $originalSize;
return $rc;
}
sub extractMemberWithoutPaths {
my $self = shift;
my ( $member, $name );
if ( ref( $_[0] ) eq 'HASH' ) {
$member = $_[0]->{memberOrZipName};
$name = $_[0]->{name};
}
else {
( $member, $name ) = @_;
}
$member = $self->memberNamed($member) unless ref($member);
return _error('member not found') unless $member;
my $originalSize = $member->compressedSize();
return AZ_OK if $member->isDirectory();
unless ($name) {
$name = $member->fileName();
$name =~ s{.*/}{}; # strip off directories, if any
$name = Archive::Zip::_asLocalName($name);
}
my $rc = $member->extractToFileNamed( $name, @_ );
$member->{'compressedSize'} = $originalSize;
return $rc;
}
sub addMember {
my $self = shift;
my $newMember = ( ref( $_[0] ) eq 'HASH' ) ? shift->{member} : shift;
push( @{ $self->{'members'} }, $newMember ) if $newMember;
return $newMember;
}
sub addFile {
my $self = shift;
my ( $fileName, $newName, $compressionLevel );
if ( ref( $_[0] ) eq 'HASH' ) {
$fileName = $_[0]->{filename};
$newName = $_[0]->{zipName};
$compressionLevel = $_[0]->{compressionLevel};
}
else {
( $fileName, $newName, $compressionLevel ) = @_;
}
my $newMember = $self->ZIPMEMBERCLASS->newFromFile( $fileName, $newName );
$newMember->desiredCompressionLevel($compressionLevel);
if ( $self->{'storeSymbolicLink'} && -l $fileName ) {
my $newMember = $self->ZIPMEMBERCLASS->newFromString(readlink $fileName, $newName);
# For symbolic links, External File Attribute is set to 0xA1FF0000 by Info-ZIP
$newMember->{'externalFileAttributes'} = 0xA1FF0000;
$self->addMember($newMember);
} else {
$self->addMember($newMember);
}
return $newMember;
}
sub addString {
my $self = shift;
my ( $stringOrStringRef, $name, $compressionLevel );
if ( ref( $_[0] ) eq 'HASH' ) {
$stringOrStringRef = $_[0]->{string};
$name = $_[0]->{zipName};
$compressionLevel = $_[0]->{compressionLevel};
}
else {
( $stringOrStringRef, $name, $compressionLevel ) = @_;;
}
my $newMember = $self->ZIPMEMBERCLASS->newFromString(
$stringOrStringRef, $name
);
$newMember->desiredCompressionLevel($compressionLevel);
return $self->addMember($newMember);
}
sub addDirectory {
my $self = shift;
my ( $name, $newName );
if ( ref( $_[0] ) eq 'HASH' ) {
$name = $_[0]->{directoryName};
$newName = $_[0]->{zipName};
}
else {
( $name, $newName ) = @_;
}
my $newMember = $self->ZIPMEMBERCLASS->newDirectoryNamed( $name, $newName );
if ( $self->{'storeSymbolicLink'} && -l $name ) {
my $link = readlink $name;
( $newName =~ s{/$}{} ) if $newName; # Strip trailing /
my $newMember = $self->ZIPMEMBERCLASS->newFromString($link, $newName);
# For symbolic links, External File Attribute is set to 0xA1FF0000 by Info-ZIP
$newMember->{'externalFileAttributes'} = 0xA1FF0000;
$self->addMember($newMember);
} else {
$self->addMember($newMember);
}
return $newMember;
}
# add either a file or a directory.
sub addFileOrDirectory {
my $self = shift;
my ( $name, $newName, $compressionLevel );
if ( ref( $_[0] ) eq 'HASH' ) {
$name = $_[0]->{name};
$newName = $_[0]->{zipName};
$compressionLevel = $_[0]->{compressionLevel};
}
else {
( $name, $newName, $compressionLevel ) = @_;
}
$name =~ s{/$}{};
if ( $newName ) {
$newName =~ s{/$}{};
} else {
$newName = $name;
}
if ( -f $name ) {
return $self->addFile( $name, $newName, $compressionLevel );
}
elsif ( -d $name ) {
return $self->addDirectory( $name, $newName );
}
else {
return _error("$name is neither a file nor a directory");
}
}
sub contents {
my $self = shift;
my ( $member, $newContents );
if ( ref( $_[0] ) eq 'HASH' ) {
$member = $_[0]->{memberOrZipName};
$newContents = $_[0]->{contents};
}
else {
( $member, $newContents ) = @_;
}
return _error('No member name given') unless $member;
$member = $self->memberNamed($member) unless ref($member);
return undef unless $member;
return $member->contents($newContents);
}
sub writeToFileNamed {
my $self = shift;
my $fileName =
( ref( $_[0] ) eq 'HASH' ) ? shift->{filename} : shift; # local FS format
foreach my $member ( $self->members() ) {
if ( $member->_usesFileNamed($fileName) ) {
return _error( "$fileName is needed by member "
. $member->fileName()
. "; consider using overwrite() or overwriteAs() instead." );
}
}
my ( $status, $fh ) = _newFileHandle( $fileName, 'w' );
return _ioError("Can't open $fileName for write") unless $status;
my $retval = $self->writeToFileHandle( $fh, 1 );
$fh->close();
$fh = undef;
return $retval;
}
# It is possible to write data to the FH before calling this,
# perhaps to make a self-extracting archive.
sub writeToFileHandle {
my $self = shift;
my ( $fh, $fhIsSeekable );
if ( ref( $_[0] ) eq 'HASH' ) {
$fh = $_[0]->{fileHandle};
$fhIsSeekable =
exists( $_[0]->{seek} ) ? $_[0]->{seek} : _isSeekable($fh);
}
else {
$fh = shift;
$fhIsSeekable = @_ ? shift : _isSeekable($fh);
}
return _error('No filehandle given') unless $fh;
return _ioError('filehandle not open') unless $fh->opened();
_binmode($fh);
# Find out where the current position is.
my $offset = $fhIsSeekable ? $fh->tell() : 0;
$offset = 0 if $offset < 0;
foreach my $member ( $self->members() ) {
my $retval = $member->_writeToFileHandle( $fh, $fhIsSeekable, $offset );
$member->endRead();
return $retval if $retval != AZ_OK;
$offset += $member->_localHeaderSize() + $member->_writeOffset();
$offset +=
$member->hasDataDescriptor()
? DATA_DESCRIPTOR_LENGTH + SIGNATURE_LENGTH
: 0;
# changed this so it reflects the last successful position
$self->{'writeCentralDirectoryOffset'} = $offset;
}
return $self->writeCentralDirectory($fh);
}
# Write zip back to the original file,
# as safely as possible.
# Returns AZ_OK if successful.
sub overwrite {
my $self = shift;
return $self->overwriteAs( $self->{'fileName'} );
}
# Write zip to the specified file,
# as safely as possible.
# Returns AZ_OK if successful.
sub overwriteAs {
my $self = shift;
my $zipName = ( ref( $_[0] ) eq 'HASH' ) ? $_[0]->{filename} : shift;
return _error("no filename in overwriteAs()") unless defined($zipName);
my ( $fh, $tempName ) = Archive::Zip::tempFile();
return _error( "Can't open temp file", $! ) unless $fh;
( my $backupName = $zipName ) =~ s{(\.[^.]*)?$}{.zbk};
my $status = $self->writeToFileHandle($fh);
$fh->close();
$fh = undef;
if ( $status != AZ_OK ) {
unlink($tempName);
_printError("Can't write to $tempName");
return $status;
}
my $err;
# rename the zip
if ( -f $zipName && !rename( $zipName, $backupName ) ) {
$err = $!;
unlink($tempName);
return _error( "Can't rename $zipName as $backupName", $err );
}
# move the temp to the original name (possibly copying)
unless ( File::Copy::move( $tempName, $zipName ) ) {
$err = $!;
rename( $backupName, $zipName );
unlink($tempName);
return _error( "Can't move $tempName to $zipName", $err );
}
# unlink the backup
if ( -f $backupName && !unlink($backupName) ) {
$err = $!;
return _error( "Can't unlink $backupName", $err );
}
return AZ_OK;
}
# Used only during writing
sub _writeCentralDirectoryOffset {
shift->{'writeCentralDirectoryOffset'};
}
sub _writeEOCDOffset {
shift->{'writeEOCDOffset'};
}
# Expects to have _writeEOCDOffset() set
sub _writeEndOfCentralDirectory {
my ( $self, $fh ) = @_;
$self->_print($fh, END_OF_CENTRAL_DIRECTORY_SIGNATURE_STRING)
or return _ioError('writing EOCD Signature');
my $zipfileCommentLength = length( $self->zipfileComment() );
my $header = pack(
END_OF_CENTRAL_DIRECTORY_FORMAT,
0, # {'diskNumber'},
0, # {'diskNumberWithStartOfCentralDirectory'},
$self->numberOfMembers(), # {'numberOfCentralDirectoriesOnThisDisk'},
$self->numberOfMembers(), # {'numberOfCentralDirectories'},
$self->_writeEOCDOffset() - $self->_writeCentralDirectoryOffset(),
$self->_writeCentralDirectoryOffset(),
$zipfileCommentLength
);
$self->_print($fh, $header)
or return _ioError('writing EOCD header');
if ($zipfileCommentLength) {
$self->_print($fh, $self->zipfileComment() )
or return _ioError('writing zipfile comment');
}
return AZ_OK;
}
# $offset can be specified to truncate a zip file.
sub writeCentralDirectory {
my $self = shift;
my ( $fh, $offset );
if ( ref( $_[0] ) eq 'HASH' ) {
$fh = $_[0]->{fileHandle};
$offset = $_[0]->{offset};
}
else {
( $fh, $offset ) = @_;
}
if ( defined($offset) ) {
$self->{'writeCentralDirectoryOffset'} = $offset;
$fh->seek( $offset, IO::Seekable::SEEK_SET )
or return _ioError('seeking to write central directory');
}
else {
$offset = $self->_writeCentralDirectoryOffset();
}
foreach my $member ( $self->members() ) {
my $status = $member->_writeCentralDirectoryFileHeader($fh);
return $status if $status != AZ_OK;
$offset += $member->_centralDirectoryHeaderSize();
$self->{'writeEOCDOffset'} = $offset;
}
return $self->_writeEndOfCentralDirectory($fh);
}
sub read {
my $self = shift;
my $fileName = ( ref( $_[0] ) eq 'HASH' ) ? shift->{filename} : shift;
return _error('No filename given') unless $fileName;
my ( $status, $fh ) = _newFileHandle( $fileName, 'r' );
return _ioError("opening $fileName for read") unless $status;
$status = $self->readFromFileHandle( $fh, $fileName );
return $status if $status != AZ_OK;
$fh->close();
$self->{'fileName'} = $fileName;
return AZ_OK;
}
sub readFromFileHandle {
my $self = shift;
my ( $fh, $fileName );
if ( ref( $_[0] ) eq 'HASH' ) {
$fh = $_[0]->{fileHandle};
$fileName = $_[0]->{filename};
}
else {
( $fh, $fileName ) = @_;
}
$fileName = $fh unless defined($fileName);
return _error('No filehandle given') unless $fh;
return _ioError('filehandle not open') unless $fh->opened();
_binmode($fh);
$self->{'fileName'} = "$fh";
# TODO: how to support non-seekable zips?
return _error('file not seekable')
unless _isSeekable($fh);
$fh->seek( 0, 0 ); # rewind the file
my $status = $self->_findEndOfCentralDirectory($fh);
return $status if $status != AZ_OK;
my $eocdPosition = $fh->tell();
$status = $self->_readEndOfCentralDirectory($fh);
return $status if $status != AZ_OK;
$fh->seek( $eocdPosition - $self->centralDirectorySize(),
IO::Seekable::SEEK_SET )
or return _ioError("Can't seek $fileName");
# Try to detect garbage at beginning of archives
# This should be 0
$self->{'eocdOffset'} = $eocdPosition - $self->centralDirectorySize() # here
- $self->centralDirectoryOffsetWRTStartingDiskNumber();
for ( ; ; ) {
my $newMember =
$self->ZIPMEMBERCLASS->_newFromZipFile( $fh, $fileName,
$self->eocdOffset() );
my $signature;
( $status, $signature ) = _readSignature( $fh, $fileName );
return $status if $status != AZ_OK;
last if $signature == END_OF_CENTRAL_DIRECTORY_SIGNATURE;
$status = $newMember->_readCentralDirectoryFileHeader();
return $status if $status != AZ_OK;
$status = $newMember->endRead();
return $status if $status != AZ_OK;
$newMember->_becomeDirectoryIfNecessary();
push( @{ $self->{'members'} }, $newMember );
}
return AZ_OK;
}
# Read EOCD, starting from position before signature.
# Return AZ_OK on success.
sub _readEndOfCentralDirectory {
my $self = shift;
my $fh = shift;
# Skip past signature
$fh->seek( SIGNATURE_LENGTH, IO::Seekable::SEEK_CUR )
or return _ioError("Can't seek past EOCD signature");
my $header = '';
my $bytesRead = $fh->read( $header, END_OF_CENTRAL_DIRECTORY_LENGTH );
if ( $bytesRead != END_OF_CENTRAL_DIRECTORY_LENGTH ) {
return _ioError("reading end of central directory");
}
my $zipfileCommentLength;
(
$self->{'diskNumber'},
$self->{'diskNumberWithStartOfCentralDirectory'},
$self->{'numberOfCentralDirectoriesOnThisDisk'},
$self->{'numberOfCentralDirectories'},
$self->{'centralDirectorySize'},
$self->{'centralDirectoryOffsetWRTStartingDiskNumber'},
$zipfileCommentLength
) = unpack( END_OF_CENTRAL_DIRECTORY_FORMAT, $header );
if ($zipfileCommentLength) {
my $zipfileComment = '';
$bytesRead = $fh->read( $zipfileComment, $zipfileCommentLength );
if ( $bytesRead != $zipfileCommentLength ) {
return _ioError("reading zipfile comment");
}
$self->{'zipfileComment'} = $zipfileComment;
}
return AZ_OK;
}
# Seek in my file to the end, then read backwards until we find the
# signature of the central directory record. Leave the file positioned right
# before the signature. Returns AZ_OK if success.
sub _findEndOfCentralDirectory {
my $self = shift;
my $fh = shift;
my $data = '';
$fh->seek( 0, IO::Seekable::SEEK_END )
or return _ioError("seeking to end");
my $fileLength = $fh->tell();
if ( $fileLength < END_OF_CENTRAL_DIRECTORY_LENGTH + 4 ) {
return _formatError("file is too short");
}
my $seekOffset = 0;
my $pos = -1;
for ( ; ; ) {
$seekOffset += 512;
$seekOffset = $fileLength if ( $seekOffset > $fileLength );
$fh->seek( -$seekOffset, IO::Seekable::SEEK_END )
or return _ioError("seek failed");
my $bytesRead = $fh->read( $data, $seekOffset );
if ( $bytesRead != $seekOffset ) {
return _ioError("read failed");
}
$pos = rindex( $data, END_OF_CENTRAL_DIRECTORY_SIGNATURE_STRING );
last
if ( $pos >= 0
or $seekOffset == $fileLength
or $seekOffset >= $Archive::Zip::ChunkSize );
}
if ( $pos >= 0 ) {
$fh->seek( $pos - $seekOffset, IO::Seekable::SEEK_CUR )
or return _ioError("seeking to EOCD");
return AZ_OK;
}
else {
return _formatError("can't find EOCD signature");
}
}
# Used to avoid taint problems when chdir'ing.
# Not intended to increase security in any way; just intended to shut up the -T
# complaints. If your Cwd module is giving you unreliable returns from cwd()
# you have bigger problems than this.
sub _untaintDir {
my $dir = shift;
$dir =~ m/\A(.+)\z/s;
return $1;
}
sub addTree {
my $self = shift;
my ( $root, $dest, $pred, $compressionLevel );
if ( ref( $_[0] ) eq 'HASH' ) {
$root = $_[0]->{root};
$dest = $_[0]->{zipName};
$pred = $_[0]->{select};
$compressionLevel = $_[0]->{compressionLevel};
}
else {
( $root, $dest, $pred, $compressionLevel ) = @_;
}
return _error("root arg missing in call to addTree()")
unless defined($root);
$dest = '' unless defined($dest);
$pred = sub { -r } unless defined($pred);
my @files;
my $startDir = _untaintDir( cwd() );
return _error( 'undef returned by _untaintDir on cwd ', cwd() )
unless $startDir;
# This avoids chdir'ing in Find, in a way compatible with older
# versions of File::Find.
my $wanted = sub {
local $main::_ = $File::Find::name;
my $dir = _untaintDir($File::Find::dir);
chdir($startDir);
push( @files, $File::Find::name ) if (&$pred);
chdir($dir);
};
File::Find::find( $wanted, $root );
my $rootZipName = _asZipDirName( $root, 1 ); # with trailing slash
my $pattern = $rootZipName eq './' ? '^' : "^\Q$rootZipName\E";
$dest = _asZipDirName( $dest, 1 ); # with trailing slash
foreach my $fileName (@files) {
my $isDir = -d $fileName;
# normalize, remove leading ./
my $archiveName = _asZipDirName( $fileName, $isDir );
if ( $archiveName eq $rootZipName ) { $archiveName = $dest }
else { $archiveName =~ s{$pattern}{$dest} }
next if $archiveName =~ m{^\.?/?$}; # skip current dir
my $member = $isDir
? $self->addDirectory( $fileName, $archiveName )
: $self->addFile( $fileName, $archiveName );
$member->desiredCompressionLevel($compressionLevel);
return _error("add $fileName failed in addTree()") if !$member;
}
return AZ_OK;
}
sub addTreeMatching {
my $self = shift;
my ( $root, $dest, $pattern, $pred, $compressionLevel );
if ( ref( $_[0] ) eq 'HASH' ) {
$root = $_[0]->{root};
$dest = $_[0]->{zipName};
$pattern = $_[0]->{pattern};
$pred = $_[0]->{select};
$compressionLevel = $_[0]->{compressionLevel};
}
else {
( $root, $dest, $pattern, $pred, $compressionLevel ) = @_;
}
return _error("root arg missing in call to addTreeMatching()")
unless defined($root);
$dest = '' unless defined($dest);
return _error("pattern missing in call to addTreeMatching()")
unless defined($pattern);
my $matcher =
$pred ? sub { m{$pattern} && &$pred } : sub { m{$pattern} && -r };
return $self->addTree( $root, $dest, $matcher, $compressionLevel );
}
# $zip->extractTree( $root, $dest [, $volume] );
#
# $root and $dest are Unix-style.
# $volume is in local FS format.
#
sub extractTree {
my $self = shift;
my ( $root, $dest, $volume );
if ( ref( $_[0] ) eq 'HASH' ) {
$root = $_[0]->{root};
$dest = $_[0]->{zipName};
$volume = $_[0]->{volume};
}
else {
( $root, $dest, $volume ) = @_;
}
$root = '' unless defined($root);
$dest = './' unless defined($dest);
my $pattern = "^\Q$root";
my @members = $self->membersMatching($pattern);
foreach my $member (@members) {
my $fileName = $member->fileName(); # in Unix format
$fileName =~ s{$pattern}{$dest}; # in Unix format
# convert to platform format:
$fileName = Archive::Zip::_asLocalName( $fileName, $volume );
my $status = $member->extractToFileNamed($fileName);
return $status if $status != AZ_OK;
}
return AZ_OK;
}
# $zip->updateMember( $memberOrName, $fileName );
# Returns (possibly updated) member, if any; undef on errors.
sub updateMember {
my $self = shift;
my ( $oldMember, $fileName );
if ( ref( $_[0] ) eq 'HASH' ) {
$oldMember = $_[0]->{memberOrZipName};
$fileName = $_[0]->{name};
}
else {
( $oldMember, $fileName ) = @_;
}
if ( !defined($fileName) ) {
_error("updateMember(): missing fileName argument");
return undef;
}
my @newStat = stat($fileName);
if ( !@newStat ) {
_ioError("Can't stat $fileName");
return undef;
}
my $isDir = -d _;
my $memberName;
if ( ref($oldMember) ) {
$memberName = $oldMember->fileName();
}
else {
$oldMember = $self->memberNamed( $memberName = $oldMember )
|| $self->memberNamed( $memberName =
_asZipDirName( $oldMember, $isDir ) );
}
unless ( defined($oldMember)
&& $oldMember->lastModTime() == $newStat[9]
&& $oldMember->isDirectory() == $isDir
&& ( $isDir || ( $oldMember->uncompressedSize() == $newStat[7] ) ) )
{
# create the new member
my $newMember = $isDir
? $self->ZIPMEMBERCLASS->newDirectoryNamed( $fileName, $memberName )
: $self->ZIPMEMBERCLASS->newFromFile( $fileName, $memberName );
unless ( defined($newMember) ) {
_error("creation of member $fileName failed in updateMember()");
return undef;
}
# replace old member or append new one
if ( defined($oldMember) ) {
$self->replaceMember( $oldMember, $newMember );
}
else { $self->addMember($newMember); }
return $newMember;
}
return $oldMember;
}
# $zip->updateTree( $root, [ $dest, [ $pred [, $mirror]]] );
#
# This takes the same arguments as addTree, but first checks to see
# whether the file or directory already exists in the zip file.
#
# If the fourth argument $mirror is true, then delete all my members
# if corresponding files weren't found.
sub updateTree {
my $self = shift;
my ( $root, $dest, $pred, $mirror, $compressionLevel );
if ( ref( $_[0] ) eq 'HASH' ) {
$root = $_[0]->{root};
$dest = $_[0]->{zipName};
$pred = $_[0]->{select};
$mirror = $_[0]->{mirror};
$compressionLevel = $_[0]->{compressionLevel};
}
else {
( $root, $dest, $pred, $mirror, $compressionLevel ) = @_;
}
return _error("root arg missing in call to updateTree()")
unless defined($root);
$dest = '' unless defined($dest);
$pred = sub { -r } unless defined($pred);
$dest = _asZipDirName( $dest, 1 );
my $rootZipName = _asZipDirName( $root, 1 ); # with trailing slash
my $pattern = $rootZipName eq './' ? '^' : "^\Q$rootZipName\E";
my @files;
my $startDir = _untaintDir( cwd() );
return _error( 'undef returned by _untaintDir on cwd ', cwd() )
unless $startDir;
# This avoids chdir'ing in Find, in a way compatible with older
# versions of File::Find.
my $wanted = sub {
local $main::_ = $File::Find::name;
my $dir = _untaintDir($File::Find::dir);
chdir($startDir);
push( @files, $File::Find::name ) if (&$pred);
chdir($dir);
};
File::Find::find( $wanted, $root );
# Now @files has all the files that I could potentially be adding to
# the zip. Only add the ones that are necessary.
# For each file (updated or not), add its member name to @done.
my %done;
foreach my $fileName (@files) {
my @newStat = stat($fileName);
my $isDir = -d _;
# normalize, remove leading ./
my $memberName = _asZipDirName( $fileName, $isDir );
if ( $memberName eq $rootZipName ) { $memberName = $dest }
else { $memberName =~ s{$pattern}{$dest} }
next if $memberName =~ m{^\.?/?$}; # skip current dir
$done{$memberName} = 1;
my $changedMember = $self->updateMember( $memberName, $fileName );
$changedMember->desiredCompressionLevel($compressionLevel);
return _error("updateTree failed to update $fileName")
unless ref($changedMember);
}
# @done now has the archive names corresponding to all the found files.
# If we're mirroring, delete all those members that aren't in @done.
if ($mirror) {
foreach my $member ( $self->members() ) {
$self->removeMember($member)
unless $done{ $member->fileName() };
}
}
return AZ_OK;
}
1;
ARCHIVE_ZIP_ARCHIVE
$fatpacked{"Archive/Zip/BufferedFileHandle.pm"} = <<'ARCHIVE_ZIP_BUFFEREDFILEHANDLE';
package Archive::Zip::BufferedFileHandle;
# File handle that uses a string internally and can seek
# This is given as a demo for getting a zip file written
# to a string.
# I probably should just use IO::Scalar instead.
# Ned Konz, March 2000
use strict;
use IO::File;
use Carp;
use vars qw{$VERSION};
BEGIN {
$VERSION = '1.30';
$VERSION = eval $VERSION;
}
sub new {
my $class = shift || __PACKAGE__;
$class = ref($class) || $class;
my $self = bless(
{
content => '',
position => 0,
size => 0
},
$class
);
return $self;
}
# Utility method to read entire file
sub readFromFile {
my $self = shift;
my $fileName = shift;
my $fh = IO::File->new( $fileName, "r" );
CORE::binmode($fh);
if ( !$fh ) {
Carp::carp("Can't open $fileName: $!\n");
return undef;
}
local $/ = undef;
$self->{content} = <$fh>;
$self->{size} = length( $self->{content} );
return $self;
}
sub contents {
my $self = shift;
if (@_) {
$self->{content} = shift;
$self->{size} = length( $self->{content} );
}
return $self->{content};
}
sub binmode { 1 }
sub close { 1 }
sub opened { 1 }
sub eof {
my $self = shift;
return $self->{position} >= $self->{size};
}
sub seek {
my $self = shift;
my $pos = shift;
my $whence = shift;
# SEEK_SET
if ( $whence == 0 ) { $self->{position} = $pos; }
# SEEK_CUR
elsif ( $whence == 1 ) { $self->{position} += $pos; }
# SEEK_END
elsif ( $whence == 2 ) { $self->{position} = $self->{size} + $pos; }
else { return 0; }
return 1;
}
sub tell { return shift->{position}; }
# Copy my data to given buffer
sub read {
my $self = shift;
my $buf = \( $_[0] );
shift;
my $len = shift;
my $offset = shift || 0;
$$buf = '' if not defined($$buf);
my $bytesRead =
( $self->{position} + $len > $self->{size} )
? ( $self->{size} - $self->{position} )
: $len;
substr( $$buf, $offset, $bytesRead ) =
substr( $self->{content}, $self->{position}, $bytesRead );
$self->{position} += $bytesRead;
return $bytesRead;
}
# Copy given buffer to me
sub write {
my $self = shift;
my $buf = \( $_[0] );
shift;
my $len = shift;
my $offset = shift || 0;
$$buf = '' if not defined($$buf);
my $bufLen = length($$buf);
my $bytesWritten =
( $offset + $len > $bufLen )
? $bufLen - $offset
: $len;
substr( $self->{content}, $self->{position}, $bytesWritten ) =
substr( $$buf, $offset, $bytesWritten );
$self->{size} = length( $self->{content} );
return $bytesWritten;
}
sub clearerr() { 1 }
1;
ARCHIVE_ZIP_BUFFEREDFILEHANDLE
$fatpacked{"Archive/Zip/DirectoryMember.pm"} = <<'ARCHIVE_ZIP_DIRECTORYMEMBER';
package Archive::Zip::DirectoryMember;
use strict;
use File::Path;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw( Archive::Zip::Member );
}
use Archive::Zip qw(
:ERROR_CODES
:UTILITY_METHODS
);
sub _newNamed {
my $class = shift;
my $fileName = shift; # FS name
my $newName = shift; # Zip name
$newName = _asZipDirName($fileName) unless $newName;
my $self = $class->new(@_);
$self->{'externalFileName'} = $fileName;
$self->fileName($newName);
if ( -e $fileName ) {
# -e does NOT do a full stat, so we need to do one now
if ( -d _ ) {
my @stat = stat(_);
$self->unixFileAttributes( $stat[2] );
my $mod_t = $stat[9];
if ( $^O eq 'MSWin32' and !$mod_t ) {
$mod_t = time();
}
$self->setLastModFileDateTimeFromUnix($mod_t);
} else { # hmm.. trying to add a non-directory?
_error( $fileName, ' exists but is not a directory' );
return undef;
}
} else {
$self->unixFileAttributes( $self->DEFAULT_DIRECTORY_PERMISSIONS );
$self->setLastModFileDateTimeFromUnix( time() );
}
return $self;
}
sub externalFileName {
shift->{'externalFileName'};
}
sub isDirectory {
return 1;
}
sub extractToFileNamed {
my $self = shift;
my $name = shift; # local FS name
my $attribs = $self->unixFileAttributes() & 07777;
mkpath( $name, 0, $attribs ); # croaks on error
utime( $self->lastModTime(), $self->lastModTime(), $name );
return AZ_OK;
}
sub fileName {
my $self = shift;
my $newName = shift;
$newName =~ s{/?$}{/} if defined($newName);
return $self->SUPER::fileName($newName);
}
# So people don't get too confused. This way it looks like the problem
# is in their code...
sub contents {
return wantarray ? ( undef, AZ_OK ) : undef;
}
1;
ARCHIVE_ZIP_DIRECTORYMEMBER
$fatpacked{"Archive/Zip/FileMember.pm"} = <<'ARCHIVE_ZIP_FILEMEMBER';
package Archive::Zip::FileMember;
use strict;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw ( Archive::Zip::Member );
}
use Archive::Zip qw(
:UTILITY_METHODS
);
sub externalFileName {
shift->{'externalFileName'};
}
# Return true if I depend on the named file
sub _usesFileNamed {
my $self = shift;
my $fileName = shift;
my $xfn = $self->externalFileName();
return undef if ref($xfn);
return $xfn eq $fileName;
}
sub fh {
my $self = shift;
$self->_openFile()
if !defined( $self->{'fh'} ) || !$self->{'fh'}->opened();
return $self->{'fh'};
}
# opens my file handle from my file name
sub _openFile {
my $self = shift;
my ( $status, $fh ) = _newFileHandle( $self->externalFileName(), 'r' );
if ( !$status ) {
_ioError( "Can't open", $self->externalFileName() );
return undef;
}
$self->{'fh'} = $fh;
_binmode($fh);
return $fh;
}
# Make sure I close my file handle
sub endRead {
my $self = shift;
undef $self->{'fh'}; # _closeFile();
return $self->SUPER::endRead(@_);
}
sub _become {
my $self = shift;
my $newClass = shift;
return $self if ref($self) eq $newClass;
delete( $self->{'externalFileName'} );
delete( $self->{'fh'} );
return $self->SUPER::_become($newClass);
}
1;
ARCHIVE_ZIP_FILEMEMBER
$fatpacked{"Archive/Zip/Member.pm"} = <<'ARCHIVE_ZIP_MEMBER';
package Archive::Zip::Member;
# A generic membet of an archive
use strict;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw( Archive::Zip );
}
use Archive::Zip qw(
:CONSTANTS
:MISC_CONSTANTS
:ERROR_CODES
:PKZIP_CONSTANTS
:UTILITY_METHODS
);
use Time::Local ();
use Compress::Raw::Zlib qw( Z_OK Z_STREAM_END MAX_WBITS );
use File::Path;
use File::Basename;
use constant ZIPFILEMEMBERCLASS => 'Archive::Zip::ZipFileMember';
use constant NEWFILEMEMBERCLASS => 'Archive::Zip::NewFileMember';
use constant STRINGMEMBERCLASS => 'Archive::Zip::StringMember';
use constant DIRECTORYMEMBERCLASS => 'Archive::Zip::DirectoryMember';
# Unix perms for default creation of files/dirs.
use constant DEFAULT_DIRECTORY_PERMISSIONS => 040755;
use constant DEFAULT_FILE_PERMISSIONS => 0100666;
use constant DIRECTORY_ATTRIB => 040000;
use constant FILE_ATTRIB => 0100000;
# Returns self if successful, else undef
# Assumes that fh is positioned at beginning of central directory file header.
# Leaves fh positioned immediately after file header or EOCD signature.
sub _newFromZipFile {
my $class = shift;
my $self = $class->ZIPFILEMEMBERCLASS->_newFromZipFile(@_);
return $self;
}
sub newFromString {
my $class = shift;
my ( $stringOrStringRef, $fileName );
if ( ref( $_[0] ) eq 'HASH' ) {
$stringOrStringRef = $_[0]->{string};
$fileName = $_[0]->{zipName};
}
else {
( $stringOrStringRef, $fileName ) = @_;
}
my $self = $class->STRINGMEMBERCLASS->_newFromString( $stringOrStringRef,
$fileName );
return $self;
}
sub newFromFile {
my $class = shift;
my ( $fileName, $zipName );
if ( ref( $_[0] ) eq 'HASH' ) {
$fileName = $_[0]->{fileName};
$zipName = $_[0]->{zipName};
}
else {
( $fileName, $zipName ) = @_;
}
my $self = $class->NEWFILEMEMBERCLASS->_newFromFileNamed( $fileName,
$zipName );
return $self;
}
sub newDirectoryNamed {
my $class = shift;
my ( $directoryName, $newName );
if ( ref( $_[0] ) eq 'HASH' ) {
$directoryName = $_[0]->{directoryName};
$newName = $_[0]->{zipName};
}
else {
( $directoryName, $newName ) = @_;
}
my $self = $class->DIRECTORYMEMBERCLASS->_newNamed( $directoryName,
$newName );
return $self;
}
sub new {
my $class = shift;
my $self = {
'lastModFileDateTime' => 0,
'fileAttributeFormat' => FA_UNIX,
'versionMadeBy' => 20,
'versionNeededToExtract' => 20,
'bitFlag' => 0,
'compressionMethod' => COMPRESSION_STORED,
'desiredCompressionMethod' => COMPRESSION_STORED,
'desiredCompressionLevel' => COMPRESSION_LEVEL_NONE,
'internalFileAttributes' => 0,
'externalFileAttributes' => 0, # set later
'fileName' => '',
'cdExtraField' => '',
'localExtraField' => '',
'fileComment' => '',
'crc32' => 0,
'compressedSize' => 0,
'uncompressedSize' => 0,
'isSymbolicLink' => 0,
@_
};
bless( $self, $class );
$self->unixFileAttributes( $self->DEFAULT_FILE_PERMISSIONS );
return $self;
}
sub _becomeDirectoryIfNecessary {
my $self = shift;
$self->_become(DIRECTORYMEMBERCLASS)
if $self->isDirectory();
return $self;
}
# Morph into given class (do whatever cleanup I need to do)
sub _become {
return bless( $_[0], $_[1] );
}
sub versionMadeBy {
shift->{'versionMadeBy'};
}
sub fileAttributeFormat {
my $self = shift;
if (@_) {
$self->{fileAttributeFormat} = ( ref( $_[0] ) eq 'HASH' )
? $_[0]->{format} : $_[0];
}
else {
return $self->{fileAttributeFormat};
}
}
sub versionNeededToExtract {
shift->{'versionNeededToExtract'};
}
sub bitFlag {
my $self = shift;
# Set General Purpose Bit Flags according to the desiredCompressionLevel setting
if ( $self->desiredCompressionLevel == 1 || $self->desiredCompressionLevel == 2 ) {
$self->{'bitFlag'} = DEFLATING_COMPRESSION_FAST;
} elsif ( $self->desiredCompressionLevel == 3 || $self->desiredCompressionLevel == 4
|| $self->desiredCompressionLevel == 5 || $self->desiredCompressionLevel == 6
|| $self->desiredCompressionLevel == 7 ) {
$self->{'bitFlag'} = DEFLATING_COMPRESSION_NORMAL;
} elsif ( $self->desiredCompressionLevel == 8 || $self->desiredCompressionLevel == 9 ) {
$self->{'bitFlag'} = DEFLATING_COMPRESSION_MAXIMUM;
}
$self->{'bitFlag'};
}
sub compressionMethod {
shift->{'compressionMethod'};
}
sub desiredCompressionMethod {
my $self = shift;
my $newDesiredCompressionMethod =
( ref( $_[0] ) eq 'HASH' ) ? shift->{compressionMethod} : shift;
my $oldDesiredCompressionMethod = $self->{'desiredCompressionMethod'};
if ( defined($newDesiredCompressionMethod) ) {
$self->{'desiredCompressionMethod'} = $newDesiredCompressionMethod;
if ( $newDesiredCompressionMethod == COMPRESSION_STORED ) {
$self->{'desiredCompressionLevel'} = 0;
$self->{'bitFlag'} &= ~GPBF_HAS_DATA_DESCRIPTOR_MASK;
} elsif ( $oldDesiredCompressionMethod == COMPRESSION_STORED ) {
$self->{'desiredCompressionLevel'} = COMPRESSION_LEVEL_DEFAULT;
}
}
return $oldDesiredCompressionMethod;
}
sub desiredCompressionLevel {
my $self = shift;
my $newDesiredCompressionLevel =
( ref( $_[0] ) eq 'HASH' ) ? shift->{compressionLevel} : shift;
my $oldDesiredCompressionLevel = $self->{'desiredCompressionLevel'};
if ( defined($newDesiredCompressionLevel) ) {
$self->{'desiredCompressionLevel'} = $newDesiredCompressionLevel;
$self->{'desiredCompressionMethod'} = (
$newDesiredCompressionLevel
? COMPRESSION_DEFLATED
: COMPRESSION_STORED
);
}
return $oldDesiredCompressionLevel;
}
sub fileName {
my $self = shift;
my $newName = shift;
if ($newName) {
$newName =~ s{[\\/]+}{/}g; # deal with dos/windoze problems
$self->{'fileName'} = $newName;
}
return $self->{'fileName'};
}
sub lastModFileDateTime {
my $modTime = shift->{'lastModFileDateTime'};
$modTime =~ m/^(\d+)$/; # untaint
return $1;
}
sub lastModTime {
my $self = shift;
return _dosToUnixTime( $self->lastModFileDateTime() );
}
sub setLastModFileDateTimeFromUnix {
my $self = shift;
my $time_t = shift;
$self->{'lastModFileDateTime'} = _unixToDosTime($time_t);
}
sub internalFileAttributes {
shift->{'internalFileAttributes'};
}
sub externalFileAttributes {
shift->{'externalFileAttributes'};
}
# Convert UNIX permissions into proper value for zip file
# Usable as a function or a method
sub _mapPermissionsFromUnix {
my $self = shift;
my $mode = shift;
my $attribs = $mode << 16;
# Microsoft Windows Explorer needs this bit set for directories
if ( $mode & DIRECTORY_ATTRIB ) {
$attribs |= 16;
}
return $attribs;
# TODO: map more MS-DOS perms
}
# Convert ZIP permissions into Unix ones
#
# This was taken from Info-ZIP group's portable UnZip
# zipfile-extraction program, version 5.50.
# http://www.info-zip.org/pub/infozip/
#
# See the mapattr() function in unix/unix.c
# See the attribute format constants in unzpriv.h
#
# XXX Note that there's one situation that isn't implemented
# yet that depends on the "extra field."
sub _mapPermissionsToUnix {
my $self = shift;
my $format = $self->{'fileAttributeFormat'};
my $attribs = $self->{'externalFileAttributes'};
my $mode = 0;
if ( $format == FA_AMIGA ) {
$attribs = $attribs >> 17 & 7; # Amiga RWE bits
$mode = $attribs << 6 | $attribs << 3 | $attribs;
return $mode;
}
if ( $format == FA_THEOS ) {
$attribs &= 0xF1FFFFFF;
if ( ( $attribs & 0xF0000000 ) != 0x40000000 ) {
$attribs &= 0x01FFFFFF; # not a dir, mask all ftype bits
}
else {
$attribs &= 0x41FFFFFF; # leave directory bit as set
}
}
if ( $format == FA_UNIX
|| $format == FA_VAX_VMS
|| $format == FA_ACORN
|| $format == FA_ATARI_ST
|| $format == FA_BEOS
|| $format == FA_QDOS
|| $format == FA_TANDEM )
{
$mode = $attribs >> 16;
return $mode if $mode != 0 or not $self->localExtraField;
# warn("local extra field is: ", $self->localExtraField, "\n");
# XXX This condition is not implemented
# I'm just including the comments from the info-zip section for now.
# Some (non-Info-ZIP) implementations of Zip for Unix and
# VMS (and probably others ??) leave 0 in the upper 16-bit
# part of the external_file_attributes field. Instead, they
# store file permission attributes in some extra field.
# As a work-around, we search for the presence of one of
# these extra fields and fall back to the MSDOS compatible
# part of external_file_attributes if one of the known
# e.f. types has been detected.
# Later, we might implement extraction of the permission
# bits from the VMS extra field. But for now, the work-around
# should be sufficient to provide "readable" extracted files.
# (For ASI Unix e.f., an experimental remap from the e.f.
# mode value IS already provided!)
}
# PKWARE's PKZip for Unix marks entries as FA_MSDOS, but stores the
# Unix attributes in the upper 16 bits of the external attributes
# field, just like Info-ZIP's Zip for Unix. We try to use that
# value, after a check for consistency with the MSDOS attribute
# bits (see below).
if ( $format == FA_MSDOS ) {
$mode = $attribs >> 16;
}
# FA_MSDOS, FA_OS2_HPFS, FA_WINDOWS_NTFS, FA_MACINTOSH, FA_TOPS20
$attribs = !( $attribs & 1 ) << 1 | ( $attribs & 0x10 ) >> 4;
# keep previous $mode setting when its "owner"
# part appears to be consistent with DOS attribute flags!
return $mode if ( $mode & 0700 ) == ( 0400 | $attribs << 6 );
$mode = 0444 | $attribs << 6 | $attribs << 3 | $attribs;
return $mode;
}
sub unixFileAttributes {
my $self = shift;
my $oldPerms = $self->_mapPermissionsToUnix;
my $perms;
if ( @_ ) {
$perms = ( ref( $_[0] ) eq 'HASH' ) ? $_[0]->{attributes} : $_[0];
if ( $self->isDirectory ) {
$perms &= ~FILE_ATTRIB;
$perms |= DIRECTORY_ATTRIB;
} else {
$perms &= ~DIRECTORY_ATTRIB;
$perms |= FILE_ATTRIB;
}
$self->{externalFileAttributes} = $self->_mapPermissionsFromUnix($perms);
}
return $oldPerms;
}
sub localExtraField {
my $self = shift;
if (@_) {
$self->{localExtraField} = ( ref( $_[0] ) eq 'HASH' )
? $_[0]->{field} : $_[0];
}
else {
return $self->{localExtraField};
}
}
sub cdExtraField {
my $self = shift;
if (@_) {
$self->{cdExtraField} = ( ref( $_[0] ) eq 'HASH' )
? $_[0]->{field} : $_[0];
}
else {
return $self->{cdExtraField};
}
}
sub extraFields {
my $self = shift;
return $self->localExtraField() . $self->cdExtraField();
}
sub fileComment {
my $self = shift;
if (@_) {
$self->{fileComment} = ( ref( $_[0] ) eq 'HASH' )
? pack( 'C0a*', $_[0]->{comment} ) : pack( 'C0a*', $_[0] );
}
else {
return $self->{fileComment};
}
}
sub hasDataDescriptor {
my $self = shift;
if (@_) {
my $shouldHave = shift;
if ($shouldHave) {
$self->{'bitFlag'} |= GPBF_HAS_DATA_DESCRIPTOR_MASK;
}
else {
$self->{'bitFlag'} &= ~GPBF_HAS_DATA_DESCRIPTOR_MASK;
}
}
return $self->{'bitFlag'} & GPBF_HAS_DATA_DESCRIPTOR_MASK;
}
sub crc32 {
shift->{'crc32'};
}
sub crc32String {
sprintf( "%08x", shift->{'crc32'} );
}
sub compressedSize {
shift->{'compressedSize'};
}
sub uncompressedSize {
shift->{'uncompressedSize'};
}
sub isEncrypted {
shift->bitFlag() & GPBF_ENCRYPTED_MASK;
}
sub isTextFile {
my $self = shift;
my $bit = $self->internalFileAttributes() & IFA_TEXT_FILE_MASK;
if (@_) {
my $flag = ( ref( $_[0] ) eq 'HASH' ) ? shift->{flag} : shift;
$self->{'internalFileAttributes'} &= ~IFA_TEXT_FILE_MASK;
$self->{'internalFileAttributes'} |=
( $flag ? IFA_TEXT_FILE: IFA_BINARY_FILE );
}
return $bit == IFA_TEXT_FILE;
}
sub isBinaryFile {
my $self = shift;
my $bit = $self->internalFileAttributes() & IFA_TEXT_FILE_MASK;
if (@_) {
my $flag = shift;
$self->{'internalFileAttributes'} &= ~IFA_TEXT_FILE_MASK;
$self->{'internalFileAttributes'} |=
( $flag ? IFA_BINARY_FILE: IFA_TEXT_FILE );
}
return $bit == IFA_BINARY_FILE;
}
sub extractToFileNamed {
my $self = shift;
# local FS name
my $name = ( ref( $_[0] ) eq 'HASH' ) ? $_[0]->{name} : $_[0];
$self->{'isSymbolicLink'} = 0;
# Check if the file / directory is a symbolic link or not
if ( $self->{'externalFileAttributes'} == 0xA1FF0000 ) {
$self->{'isSymbolicLink'} = 1;
$self->{'newName'} = $name;
my ( $status, $fh ) = _newFileHandle( $name, 'r' );
my $retval = $self->extractToFileHandle($fh);
$fh->close();
} else {
#return _writeSymbolicLink($self, $name) if $self->isSymbolicLink();
return _error("encryption unsupported") if $self->isEncrypted();
mkpath( dirname($name) ); # croaks on error
my ( $status, $fh ) = _newFileHandle( $name, 'w' );
return _ioError("Can't open file $name for write") unless $status;
my $retval = $self->extractToFileHandle($fh);
$fh->close();
chmod ($self->unixFileAttributes(), $name)
or return _error("Can't chmod() ${name}: $!");
utime( $self->lastModTime(), $self->lastModTime(), $name );
return $retval;
}
}
sub _writeSymbolicLink {
my $self = shift;
my $name = shift;
my $chunkSize = $Archive::Zip::ChunkSize;
#my ( $outRef, undef ) = $self->readChunk($chunkSize);
my $fh;
my $retval = $self->extractToFileHandle($fh);
my ( $outRef, undef ) = $self->readChunk(100);
}
sub isSymbolicLink {
my $self = shift;
if ( $self->{'externalFileAttributes'} == 0xA1FF0000 ) {
$self->{'isSymbolicLink'} = 1;
} else {
return 0;
}
1;
}
sub isDirectory {
return 0;
}
sub externalFileName {
return undef;
}
# The following are used when copying data
sub _writeOffset {
shift->{'writeOffset'};
}
sub _readOffset {
shift->{'readOffset'};
}
sub writeLocalHeaderRelativeOffset {
shift->{'writeLocalHeaderRelativeOffset'};
}
sub wasWritten { shift->{'wasWritten'} }
sub _dataEnded {
shift->{'dataEnded'};
}
sub _readDataRemaining {
shift->{'readDataRemaining'};
}
sub _inflater {
shift->{'inflater'};
}
sub _deflater {
shift->{'deflater'};
}
# Return the total size of my local header
sub _localHeaderSize {
my $self = shift;
return SIGNATURE_LENGTH + LOCAL_FILE_HEADER_LENGTH +
length( $self->fileName() ) + length( $self->localExtraField() );
}
# Return the total size of my CD header
sub _centralDirectoryHeaderSize {
my $self = shift;
return SIGNATURE_LENGTH + CENTRAL_DIRECTORY_FILE_HEADER_LENGTH +
length( $self->fileName() ) + length( $self->cdExtraField() ) +
length( $self->fileComment() );
}
# DOS date/time format
# 0-4 (5) Second divided by 2
# 5-10 (6) Minute (0-59)
# 11-15 (5) Hour (0-23 on a 24-hour clock)
# 16-20 (5) Day of the month (1-31)
# 21-24 (4) Month (1 = January, 2 = February, etc.)
# 25-31 (7) Year offset from 1980 (add 1980 to get actual year)
# Convert DOS date/time format to unix time_t format
# NOT AN OBJECT METHOD!
sub _dosToUnixTime {
my $dt = shift;
return time() unless defined($dt);
my $year = ( ( $dt >> 25 ) & 0x7f ) + 80;
my $mon = ( ( $dt >> 21 ) & 0x0f ) - 1;
my $mday = ( ( $dt >> 16 ) & 0x1f );
my $hour = ( ( $dt >> 11 ) & 0x1f );
my $min = ( ( $dt >> 5 ) & 0x3f );
my $sec = ( ( $dt << 1 ) & 0x3e );
# catch errors
my $time_t =
eval { Time::Local::timelocal( $sec, $min, $hour, $mday, $mon, $year ); };
return time() if ($@);
return $time_t;
}
# Note, this isn't exactly UTC 1980, it's 1980 + 12 hours and 1
# minute so that nothing timezoney can muck us up.
my $safe_epoch = 315576060;
# convert a unix time to DOS date/time
# NOT AN OBJECT METHOD!
sub _unixToDosTime {
my $time_t = shift;
unless ($time_t) {
_error("Tried to add member with zero or undef value for time");
$time_t = $safe_epoch;
}
if ( $time_t < $safe_epoch ) {
_ioError("Unsupported date before 1980 encountered, moving to 1980");
$time_t = $safe_epoch;
}
my ( $sec, $min, $hour, $mday, $mon, $year ) = localtime($time_t);
my $dt = 0;
$dt += ( $sec >> 1 );
$dt += ( $min << 5 );
$dt += ( $hour << 11 );
$dt += ( $mday << 16 );
$dt += ( ( $mon + 1 ) << 21 );
$dt += ( ( $year - 80 ) << 25 );
return $dt;
}
# Write my local header to a file handle.
# Stores the offset to the start of the header in my
# writeLocalHeaderRelativeOffset member.
# Returns AZ_OK on success.
sub _writeLocalFileHeader {
my $self = shift;
my $fh = shift;
my $signatureData = pack( SIGNATURE_FORMAT, LOCAL_FILE_HEADER_SIGNATURE );
$self->_print($fh, $signatureData)
or return _ioError("writing local header signature");
my $header = pack(
LOCAL_FILE_HEADER_FORMAT,
$self->versionNeededToExtract(),
$self->bitFlag(),
$self->desiredCompressionMethod(),
$self->lastModFileDateTime(),
$self->crc32(),
$self->compressedSize(), # may need to be re-written later
$self->uncompressedSize(),
length( $self->fileName() ),
length( $self->localExtraField() )
);
$self->_print($fh, $header) or return _ioError("writing local header");
# Check for a valid filename or a filename equal to a literal `0'
if ( $self->fileName() || $self->fileName eq '0' ) {
$self->_print($fh, $self->fileName() )
or return _ioError("writing local header filename");
}
if ( $self->localExtraField() ) {
$self->_print($fh, $self->localExtraField() )
or return _ioError("writing local extra field");
}
return AZ_OK;
}
sub _writeCentralDirectoryFileHeader {
my $self = shift;
my $fh = shift;
my $sigData =
pack( SIGNATURE_FORMAT, CENTRAL_DIRECTORY_FILE_HEADER_SIGNATURE );
$self->_print($fh, $sigData)
or return _ioError("writing central directory header signature");
my $fileNameLength = length( $self->fileName() );
my $extraFieldLength = length( $self->cdExtraField() );
my $fileCommentLength = length( $self->fileComment() );
my $header = pack(
CENTRAL_DIRECTORY_FILE_HEADER_FORMAT,
$self->versionMadeBy(),
$self->fileAttributeFormat(),
$self->versionNeededToExtract(),
$self->bitFlag(),
$self->desiredCompressionMethod(),
$self->lastModFileDateTime(),
$self->crc32(), # these three fields should have been updated
$self->_writeOffset(), # by writing the data stream out
$self->uncompressedSize(), #
$fileNameLength,
$extraFieldLength,
$fileCommentLength,
0, # {'diskNumberStart'},
$self->internalFileAttributes(),
$self->externalFileAttributes(),
$self->writeLocalHeaderRelativeOffset()
);
$self->_print($fh, $header)
or return _ioError("writing central directory header");
if ($fileNameLength) {
$self->_print($fh, $self->fileName() )
or return _ioError("writing central directory header signature");
}
if ($extraFieldLength) {
$self->_print($fh, $self->cdExtraField() )
or return _ioError("writing central directory extra field");
}
if ($fileCommentLength) {
$self->_print($fh, $self->fileComment() )
or return _ioError("writing central directory file comment");
}
return AZ_OK;
}
# This writes a data descriptor to the given file handle.
# Assumes that crc32, writeOffset, and uncompressedSize are
# set correctly (they should be after a write).
# Further, the local file header should have the
# GPBF_HAS_DATA_DESCRIPTOR_MASK bit set.
sub _writeDataDescriptor {
my $self = shift;
my $fh = shift;
my $header = pack(
SIGNATURE_FORMAT . DATA_DESCRIPTOR_FORMAT,
DATA_DESCRIPTOR_SIGNATURE,
$self->crc32(),
$self->_writeOffset(), # compressed size
$self->uncompressedSize()
);
$self->_print($fh, $header)
or return _ioError("writing data descriptor");
return AZ_OK;
}
# Re-writes the local file header with new crc32 and compressedSize fields.
# To be called after writing the data stream.
# Assumes that filename and extraField sizes didn't change since last written.
sub _refreshLocalFileHeader {
my $self = shift;
my $fh = shift;
my $here = $fh->tell();
$fh->seek( $self->writeLocalHeaderRelativeOffset() + SIGNATURE_LENGTH,
IO::Seekable::SEEK_SET )
or return _ioError("seeking to rewrite local header");
my $header = pack(
LOCAL_FILE_HEADER_FORMAT,
$self->versionNeededToExtract(),
$self->bitFlag(),
$self->desiredCompressionMethod(),
$self->lastModFileDateTime(),
$self->crc32(),
$self->_writeOffset(), # compressed size
$self->uncompressedSize(),
length( $self->fileName() ),
length( $self->localExtraField() )
);
$self->_print($fh, $header)
or return _ioError("re-writing local header");
$fh->seek( $here, IO::Seekable::SEEK_SET )
or return _ioError("seeking after rewrite of local header");
return AZ_OK;
}
sub readChunk {
my $self = shift;
my $chunkSize = ( ref( $_[0] ) eq 'HASH' ) ? $_[0]->{chunkSize} : $_[0];
if ( $self->readIsDone() ) {
$self->endRead();
my $dummy = '';
return ( \$dummy, AZ_STREAM_END );
}
$chunkSize = $Archive::Zip::ChunkSize if not defined($chunkSize);
$chunkSize = $self->_readDataRemaining()
if $chunkSize > $self->_readDataRemaining();
my $buffer = '';
my $outputRef;
my ( $bytesRead, $status ) = $self->_readRawChunk( \$buffer, $chunkSize );
return ( \$buffer, $status ) unless $status == AZ_OK;
$self->{'readDataRemaining'} -= $bytesRead;
$self->{'readOffset'} += $bytesRead;
if ( $self->compressionMethod() == COMPRESSION_STORED ) {
$self->{'crc32'} = $self->computeCRC32( $buffer, $self->{'crc32'} );
}
( $outputRef, $status ) = &{ $self->{'chunkHandler'} }( $self, \$buffer );
$self->{'writeOffset'} += length($$outputRef);
$self->endRead()
if $self->readIsDone();
return ( $outputRef, $status );
}
# Read the next raw chunk of my data. Subclasses MUST implement.
# my ( $bytesRead, $status) = $self->_readRawChunk( \$buffer, $chunkSize );
sub _readRawChunk {
my $self = shift;
return $self->_subclassResponsibility();
}
# A place holder to catch rewindData errors if someone ignores
# the error code.
sub _noChunk {
my $self = shift;
return ( \undef, _error("trying to copy chunk when init failed") );
}
# Basically a no-op so that I can have a consistent interface.
# ( $outputRef, $status) = $self->_copyChunk( \$buffer );
sub _copyChunk {
my ( $self, $dataRef ) = @_;
return ( $dataRef, AZ_OK );
}
# ( $outputRef, $status) = $self->_deflateChunk( \$buffer );
sub _deflateChunk {
my ( $self, $buffer ) = @_;
my ( $status ) = $self->_deflater()->deflate( $buffer, my $out );
if ( $self->_readDataRemaining() == 0 ) {
my $extraOutput;
( $status ) = $self->_deflater()->flush($extraOutput);
$out .= $extraOutput;
$self->endRead();
return ( \$out, AZ_STREAM_END );
}
elsif ( $status == Z_OK ) {
return ( \$out, AZ_OK );
}
else {
$self->endRead();
my $retval = _error( 'deflate error', $status );
my $dummy = '';
return ( \$dummy, $retval );
}
}
# ( $outputRef, $status) = $self->_inflateChunk( \$buffer );
sub _inflateChunk {
my ( $self, $buffer ) = @_;
my ( $status ) = $self->_inflater()->inflate( $buffer, my $out );
my $retval;
$self->endRead() unless $status == Z_OK;
if ( $status == Z_OK || $status == Z_STREAM_END ) {
$retval = ( $status == Z_STREAM_END ) ? AZ_STREAM_END: AZ_OK;
return ( \$out, $retval );
}
else {
$retval = _error( 'inflate error', $status );
my $dummy = '';
return ( \$dummy, $retval );
}
}
sub rewindData {
my $self = shift;
my $status;
# set to trap init errors
$self->{'chunkHandler'} = $self->can('_noChunk');
# Work around WinZip bug with 0-length DEFLATED files
$self->desiredCompressionMethod(COMPRESSION_STORED)
if $self->uncompressedSize() == 0;
# assume that we're going to read the whole file, and compute the CRC anew.
$self->{'crc32'} = 0
if ( $self->compressionMethod() == COMPRESSION_STORED );
# These are the only combinations of methods we deal with right now.
if ( $self->compressionMethod() == COMPRESSION_STORED
and $self->desiredCompressionMethod() == COMPRESSION_DEFLATED )
{
( $self->{'deflater'}, $status ) = Compress::Raw::Zlib::Deflate->new(
'-Level' => $self->desiredCompressionLevel(),
'-WindowBits' => -MAX_WBITS(), # necessary magic
'-Bufsize' => $Archive::Zip::ChunkSize,
@_
); # pass additional options
return _error( 'deflateInit error:', $status )
unless $status == Z_OK;
$self->{'chunkHandler'} = $self->can('_deflateChunk');
}
elsif ( $self->compressionMethod() == COMPRESSION_DEFLATED
and $self->desiredCompressionMethod() == COMPRESSION_STORED )
{
( $self->{'inflater'}, $status ) = Compress::Raw::Zlib::Inflate->new(
'-WindowBits' => -MAX_WBITS(), # necessary magic
'-Bufsize' => $Archive::Zip::ChunkSize,
@_
); # pass additional options
return _error( 'inflateInit error:', $status )
unless $status == Z_OK;
$self->{'chunkHandler'} = $self->can('_inflateChunk');
}
elsif ( $self->compressionMethod() == $self->desiredCompressionMethod() ) {
$self->{'chunkHandler'} = $self->can('_copyChunk');
}
else {
return _error(
sprintf(
"Unsupported compression combination: read %d, write %d",
$self->compressionMethod(),
$self->desiredCompressionMethod()
)
);
}
$self->{'readDataRemaining'} =
( $self->compressionMethod() == COMPRESSION_STORED )
? $self->uncompressedSize()
: $self->compressedSize();
$self->{'dataEnded'} = 0;
$self->{'readOffset'} = 0;
return AZ_OK;
}
sub endRead {
my $self = shift;
delete $self->{'inflater'};
delete $self->{'deflater'};
$self->{'dataEnded'} = 1;
$self->{'readDataRemaining'} = 0;
return AZ_OK;
}
sub readIsDone {
my $self = shift;
return ( $self->_dataEnded() or !$self->_readDataRemaining() );
}
sub contents {
my $self = shift;
my $newContents = shift;
if ( defined($newContents) ) {
# change our type and call the subclass contents method.
$self->_become(STRINGMEMBERCLASS);
return $self->contents( pack( 'C0a*', $newContents ) )
; # in case of Unicode
}
else {
my $oldCompression =
$self->desiredCompressionMethod(COMPRESSION_STORED);
my $status = $self->rewindData(@_);
if ( $status != AZ_OK ) {
$self->endRead();
return $status;
}
my $retval = '';
while ( $status == AZ_OK ) {
my $ref;
( $ref, $status ) = $self->readChunk( $self->_readDataRemaining() );
# did we get it in one chunk?
if ( length($$ref) == $self->uncompressedSize() ) {
$retval = $$ref;
}
else { $retval .= $$ref }
}
$self->desiredCompressionMethod($oldCompression);
$self->endRead();
$status = AZ_OK if $status == AZ_STREAM_END;
$retval = undef unless $status == AZ_OK;
return wantarray ? ( $retval, $status ) : $retval;
}
}
sub extractToFileHandle {
my $self = shift;
return _error("encryption unsupported") if $self->isEncrypted();
my $fh = ( ref( $_[0] ) eq 'HASH' ) ? shift->{fileHandle} : shift;
_binmode($fh);
my $oldCompression = $self->desiredCompressionMethod(COMPRESSION_STORED);
my $status = $self->rewindData(@_);
$status = $self->_writeData($fh) if $status == AZ_OK;
$self->desiredCompressionMethod($oldCompression);
$self->endRead();
return $status;
}
# write local header and data stream to file handle
sub _writeToFileHandle {
my $self = shift;
my $fh = shift;
my $fhIsSeekable = shift;
my $offset = shift;
return _error("no member name given for $self")
if $self->fileName() eq '';
$self->{'writeLocalHeaderRelativeOffset'} = $offset;
$self->{'wasWritten'} = 0;
# Determine if I need to write a data descriptor
# I need to do this if I can't refresh the header
# and I don't know compressed size or crc32 fields.
my $headerFieldsUnknown = (
( $self->uncompressedSize() > 0 )
and ($self->compressionMethod() == COMPRESSION_STORED
or $self->desiredCompressionMethod() == COMPRESSION_DEFLATED )
);
my $shouldWriteDataDescriptor =
( $headerFieldsUnknown and not $fhIsSeekable );
$self->hasDataDescriptor(1)
if ($shouldWriteDataDescriptor);
$self->{'writeOffset'} = 0;
my $status = $self->rewindData();
( $status = $self->_writeLocalFileHeader($fh) )
if $status == AZ_OK;
( $status = $self->_writeData($fh) )
if $status == AZ_OK;
if ( $status == AZ_OK ) {
$self->{'wasWritten'} = 1;
if ( $self->hasDataDescriptor() ) {
$status = $self->_writeDataDescriptor($fh);
}
elsif ($headerFieldsUnknown) {
$status = $self->_refreshLocalFileHeader($fh);
}
}
return $status;
}
# Copy my (possibly compressed) data to given file handle.
# Returns C<AZ_OK> on success
sub _writeData {
my $self = shift;
my $writeFh = shift;
# If symbolic link, just create one if the operating system is Linux, Unix, BSD or VMS
# TODO: Add checks for other operating systems
if ( $self->{'isSymbolicLink'} == 1 && $^O eq 'linux' ) {
my $chunkSize = $Archive::Zip::ChunkSize;
my ( $outRef, $status ) = $self->readChunk($chunkSize);
symlink $$outRef, $self->{'newName'};
} else {
return AZ_OK if ( $self->uncompressedSize() == 0 );
my $status;
my $chunkSize = $Archive::Zip::ChunkSize;
while ( $self->_readDataRemaining() > 0 ) {
my $outRef;
( $outRef, $status ) = $self->readChunk($chunkSize);
return $status if ( $status != AZ_OK and $status != AZ_STREAM_END );
if ( length($$outRef) > 0 ) {
$self->_print($writeFh, $$outRef)
or return _ioError("write error during copy");
}
last if $status == AZ_STREAM_END;
}
$self->{'compressedSize'} = $self->_writeOffset();
}
return AZ_OK;
}
# Return true if I depend on the named file
sub _usesFileNamed {
return 0;
}
1;
ARCHIVE_ZIP_MEMBER
$fatpacked{"Archive/Zip/MemberRead.pm"} = <<'ARCHIVE_ZIP_MEMBERREAD';
package Archive::Zip::MemberRead;
=head1 NAME
Archive::Zip::MemberRead - A wrapper that lets you read Zip archive members as if they were files.
=cut
=head1 SYNOPSIS
use Archive::Zip;
use Archive::Zip::MemberRead;
$zip = Archive::Zip->new("file.zip");
$fh = Archive::Zip::MemberRead->new($zip, "subdir/abc.txt");
while (defined($line = $fh->getline()))
{
print $fh->input_line_number . "#: $line\n";
}
$read = $fh->read($buffer, 32*1024);
print "Read $read bytes as :$buffer:\n";
=head1 DESCRIPTION
The Archive::Zip::MemberRead module lets you read Zip archive member data
just like you read data from files.
=head1 METHODS
=over 4
=cut
use strict;
use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
use vars qw{$VERSION};
my $nl;
BEGIN {
$VERSION = '1.30';
$VERSION = eval $VERSION;
# Requirement for newline conversion. Should check for e.g., DOS and OS/2 as well, but am too lazy.
$nl = $^O eq 'MSWin32' ? "\r\n" : "\n";
}
=item Archive::Zip::Member::readFileHandle()
You can get a C<Archive::Zip::MemberRead> from an archive member by
calling C<readFileHandle()>:
my $member = $zip->memberNamed('abc/def.c');
my $fh = $member->readFileHandle();
while (defined($line = $fh->getline()))
{
# ...
}
$fh->close();
=cut
sub Archive::Zip::Member::readFileHandle {
return Archive::Zip::MemberRead->new( shift() );
}
=item Archive::Zip::MemberRead->new($zip, $fileName)
=item Archive::Zip::MemberRead->new($zip, $member)
=item Archive::Zip::MemberRead->new($member)
Construct a new Archive::Zip::MemberRead on the specified member.
my $fh = Archive::Zip::MemberRead->new($zip, 'fred.c')
=cut
sub new {
my ( $class, $zip, $file ) = @_;
my ( $self, $member );
if ( $zip && $file ) # zip and filename, or zip and member
{
$member = ref($file) ? $file : $zip->memberNamed($file);
}
elsif ( $zip && !$file && ref($zip) ) # just member
{
$member = $zip;
}
else {
die(
'Archive::Zip::MemberRead::new needs a zip and filename, zip and member, or member'
);
}
$self = {};
bless( $self, $class );
$self->set_member($member);
return $self;
}
sub set_member {
my ( $self, $member ) = @_;
$self->{member} = $member;
$self->set_compression(COMPRESSION_STORED);
$self->rewind();
}
sub set_compression {
my ( $self, $compression ) = @_;
$self->{member}->desiredCompressionMethod($compression) if $self->{member};
}
=item setLineEnd(expr)
Set the line end character to use. This is set to \n by default
except on Windows systems where it is set to \r\n. You will
only need to set this on systems which are not Windows or Unix
based and require a line end diffrent from \n.
This is a class method so call as C<Archive::Zip::MemberRead>->C<setLineEnd($nl)>
=cut
sub setLineEnd {
shift;
$nl = shift;
}
=item rewind()
Rewinds an C<Archive::Zip::MemberRead> so that you can read from it again
starting at the beginning.
=cut
sub rewind {
my $self = shift;
$self->_reset_vars();
$self->{member}->rewindData() if $self->{member};
}
sub _reset_vars {
my $self = shift;
$self->{line_no} = 0;
$self->{at_end} = 0;
delete $self->{buffer};
}
=item input_record_separator(expr)
If the argumnet is given, input_record_separator for this
instance is set to it. The current setting (which may be
the global $/) is always returned.
=cut
sub input_record_separator {
my $self = shift;
if (@_) {
$self->{sep} = shift;
$self->{sep_re} = _sep_as_re($self->{sep}); # Cache the RE as an optimization
}
return exists $self->{sep} ? $self->{sep} : $/;
}
# Return the input_record_separator in use as an RE fragment
# Note that if we have a per-instance input_record_separator
# we can just return the already converted value. Otherwise,
# the conversion must be done on $/ every time since we cannot
# know whether it has changed or not.
sub _sep_re {
my $self = shift;
# Important to phrase this way: sep's value may be undef.
return exists $self->{sep} ? $self->{sep_re} : _sep_as_re($/);
}
# Convert the input record separator into an RE and return it.
sub _sep_as_re {
my $sep = shift;
if (defined $sep) {
if ($sep eq '') {
return "(?:$nl){2,}";
} else {
$sep =~ s/\n/$nl/og;
return quotemeta $sep;
}
} else {
return undef;
}
}
=item input_line_number()
Returns the current line number, but only if you're using C<getline()>.
Using C<read()> will not update the line number.
=cut
sub input_line_number {
my $self = shift;
return $self->{line_no};
}
=item close()
Closes the given file handle.
=cut
sub close {
my $self = shift;
$self->_reset_vars();
$self->{member}->endRead();
}
=item buffer_size([ $size ])
Gets or sets the buffer size used for reads.
Default is the chunk size used by Archive::Zip.
=cut
sub buffer_size {
my ( $self, $size ) = @_;
if ( !$size ) {
return $self->{chunkSize} || Archive::Zip::chunkSize();
}
else {
$self->{chunkSize} = $size;
}
}
=item getline()
Returns the next line from the currently open member.
Makes sense only for text files.
A read error is considered fatal enough to die.
Returns undef on eof. All subsequent calls would return undef,
unless a rewind() is called.
Note: The line returned has the input_record_separator (default: newline) removed.
=cut
sub getline {
my $self = shift;
my $size = $self->buffer_size();
my $sep = $self->_sep_re();
for (;;) {
if ( $sep
&& defined($self->{buffer})
&& $self->{buffer} =~ s/^(.*?)$sep//s
) {
$self->{line_no}++;
return $1;
} elsif ($self->{at_end}) {
$self->{line_no}++ if $self->{buffer};
return delete $self->{buffer};
}
my ($temp,$status) = $self->{member}->readChunk($size);
if ($status != AZ_OK && $status != AZ_STREAM_END) {
die "ERROR: Error reading chunk from archive - $status";
}
$self->{at_end} = $status == AZ_STREAM_END;
$self->{buffer} .= $$temp;
}
}
=item read($buffer, $num_bytes_to_read)
Simulates a normal C<read()> system call.
Returns the no. of bytes read. C<undef> on error, 0 on eof, I<e.g.>:
$fh = Archive::Zip::MemberRead->new($zip, "sreeji/secrets.bin");
while (1)
{
$read = $fh->read($buffer, 1024);
die "FATAL ERROR reading my secrets !\n" if (!defined($read));
last if (!$read);
# Do processing.
....
}
=cut
#
# All these $_ are required to emulate read().
#
sub read {
my $self = $_[0];
my $size = $_[2];
my ( $temp, $status, $ret );
( $temp, $status ) = $self->{member}->readChunk($size);
if ( $status != AZ_OK && $status != AZ_STREAM_END ) {
$_[1] = undef;
$ret = undef;
}
else {
$_[1] = $$temp;
$ret = length($$temp);
}
return $ret;
}
1;
=back
=head1 AUTHOR
Sreeji K. Das, <[email protected]>
See L<Archive::Zip> by Ned Konz without which this module does not make
any sense!
Minor mods by Ned Konz.
=head1 COPYRIGHT
Copyright 2002 Sreeji K. Das.
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
ARCHIVE_ZIP_MEMBERREAD
$fatpacked{"Archive/Zip/MockFileHandle.pm"} = <<'ARCHIVE_ZIP_MOCKFILEHANDLE';
package Archive::Zip::MockFileHandle;
# Output file handle that calls a custom write routine
# Ned Konz, March 2000
# This is provided to help with writing zip files
# when you have to process them a chunk at a time.
use strict;
use vars qw{$VERSION};
BEGIN {
$VERSION = '1.30';
$VERSION = eval $VERSION;
}
sub new {
my $class = shift || __PACKAGE__;
$class = ref($class) || $class;
my $self = bless(
{
'position' => 0,
'size' => 0
},
$class
);
return $self;
}
sub eof {
my $self = shift;
return $self->{'position'} >= $self->{'size'};
}
# Copy given buffer to me
sub print {
my $self = shift;
my $bytes = join( '', @_ );
my $bytesWritten = $self->writeHook($bytes);
if ( $self->{'position'} + $bytesWritten > $self->{'size'} ) {
$self->{'size'} = $self->{'position'} + $bytesWritten;
}
$self->{'position'} += $bytesWritten;
return $bytesWritten;
}
# Called on each write.
# Override in subclasses.
# Return number of bytes written (0 on error).
sub writeHook {
my $self = shift;
my $bytes = shift;
return length($bytes);
}
sub binmode { 1 }
sub close { 1 }
sub clearerr { 1 }
# I'm write-only!
sub read { 0 }
sub tell { return shift->{'position'} }
sub opened { 1 }
1;
ARCHIVE_ZIP_MOCKFILEHANDLE
$fatpacked{"Archive/Zip/NewFileMember.pm"} = <<'ARCHIVE_ZIP_NEWFILEMEMBER';
package Archive::Zip::NewFileMember;
use strict;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw ( Archive::Zip::FileMember );
}
use Archive::Zip qw(
:CONSTANTS
:ERROR_CODES
:UTILITY_METHODS
);
# Given a file name, set up for eventual writing.
sub _newFromFileNamed {
my $class = shift;
my $fileName = shift; # local FS format
my $newName = shift;
$newName = _asZipDirName($fileName) unless defined($newName);
return undef unless ( stat($fileName) && -r _ && !-d _ );
my $self = $class->new(@_);
$self->{'fileName'} = $newName;
$self->{'externalFileName'} = $fileName;
$self->{'compressionMethod'} = COMPRESSION_STORED;
my @stat = stat(_);
$self->{'compressedSize'} = $self->{'uncompressedSize'} = $stat[7];
$self->desiredCompressionMethod(
( $self->compressedSize() > 0 )
? COMPRESSION_DEFLATED
: COMPRESSION_STORED
);
$self->unixFileAttributes( $stat[2] );
$self->setLastModFileDateTimeFromUnix( $stat[9] );
$self->isTextFile( -T _ );
return $self;
}
sub rewindData {
my $self = shift;
my $status = $self->SUPER::rewindData(@_);
return $status unless $status == AZ_OK;
return AZ_IO_ERROR unless $self->fh();
$self->fh()->clearerr();
$self->fh()->seek( 0, IO::Seekable::SEEK_SET )
or return _ioError( "rewinding", $self->externalFileName() );
return AZ_OK;
}
# Return bytes read. Note that first parameter is a ref to a buffer.
# my $data;
# my ( $bytesRead, $status) = $self->readRawChunk( \$data, $chunkSize );
sub _readRawChunk {
my ( $self, $dataRef, $chunkSize ) = @_;
return ( 0, AZ_OK ) unless $chunkSize;
my $bytesRead = $self->fh()->read( $$dataRef, $chunkSize )
or return ( 0, _ioError("reading data") );
return ( $bytesRead, AZ_OK );
}
# If I already exist, extraction is a no-op.
sub extractToFileNamed {
my $self = shift;
my $name = shift; # local FS name
if ( File::Spec->rel2abs($name) eq
File::Spec->rel2abs( $self->externalFileName() ) and -r $name )
{
return AZ_OK;
}
else {
return $self->SUPER::extractToFileNamed( $name, @_ );
}
}
1;
ARCHIVE_ZIP_NEWFILEMEMBER
$fatpacked{"Archive/Zip/StringMember.pm"} = <<'ARCHIVE_ZIP_STRINGMEMBER';
package Archive::Zip::StringMember;
use strict;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw( Archive::Zip::Member );
}
use Archive::Zip qw(
:CONSTANTS
:ERROR_CODES
);
# Create a new string member. Default is COMPRESSION_STORED.
# Can take a ref to a string as well.
sub _newFromString {
my $class = shift;
my $string = shift;
my $name = shift;
my $self = $class->new(@_);
$self->contents($string);
$self->fileName($name) if defined($name);
# Set the file date to now
$self->setLastModFileDateTimeFromUnix( time() );
$self->unixFileAttributes( $self->DEFAULT_FILE_PERMISSIONS );
return $self;
}
sub _become {
my $self = shift;
my $newClass = shift;
return $self if ref($self) eq $newClass;
delete( $self->{'contents'} );
return $self->SUPER::_become($newClass);
}
# Get or set my contents. Note that we do not call the superclass
# version of this, because it calls us.
sub contents {
my $self = shift;
my $string = shift;
if ( defined($string) ) {
$self->{'contents'} =
pack( 'C0a*', ( ref($string) eq 'SCALAR' ) ? $$string : $string );
$self->{'uncompressedSize'} = $self->{'compressedSize'} =
length( $self->{'contents'} );
$self->{'compressionMethod'} = COMPRESSION_STORED;
}
return $self->{'contents'};
}
# Return bytes read. Note that first parameter is a ref to a buffer.
# my $data;
# my ( $bytesRead, $status) = $self->readRawChunk( \$data, $chunkSize );
sub _readRawChunk {
my ( $self, $dataRef, $chunkSize ) = @_;
$$dataRef = substr( $self->contents(), $self->_readOffset(), $chunkSize );
return ( length($$dataRef), AZ_OK );
}
1;
ARCHIVE_ZIP_STRINGMEMBER
$fatpacked{"Archive/Zip/Tree.pm"} = <<'ARCHIVE_ZIP_TREE';
package Archive::Zip::Tree;
use strict;
use vars qw{$VERSION};
BEGIN {
$VERSION = '1.30';
}
use Archive::Zip;
warn(
"Archive::Zip::Tree is deprecated; its methods have been moved into Archive::Zip."
) if $^W;
1;
__END__
=head1 NAME
Archive::Zip::Tree - (DEPRECATED) methods for adding/extracting trees using Archive::Zip
=head1 SYNOPSIS
=head1 DESCRIPTION
This module is deprecated, because all its methods were moved into the main
Archive::Zip module.
It is included in the distribution merely to avoid breaking old code.
See L<Archive::Zip>.
=head1 AUTHOR
Ned Konz, [email protected]
=head1 COPYRIGHT
Copyright (c) 2000-2002 Ned Konz. All rights reserved. This program is free
software; you can redistribute it and/or modify it under the same terms
as Perl itself.
=head1 SEE ALSO
L<Archive::Zip>
=cut
ARCHIVE_ZIP_TREE
$fatpacked{"Archive/Zip/ZipFileMember.pm"} = <<'ARCHIVE_ZIP_ZIPFILEMEMBER';
package Archive::Zip::ZipFileMember;
use strict;
use vars qw( $VERSION @ISA );
BEGIN {
$VERSION = '1.30';
@ISA = qw ( Archive::Zip::FileMember );
}
use Archive::Zip qw(
:CONSTANTS
:ERROR_CODES
:PKZIP_CONSTANTS
:UTILITY_METHODS
);
# Create a new Archive::Zip::ZipFileMember
# given a filename and optional open file handle
#
sub _newFromZipFile {
my $class = shift;
my $fh = shift;
my $externalFileName = shift;
my $possibleEocdOffset = shift; # normally 0
my $self = $class->new(
'crc32' => 0,
'diskNumberStart' => 0,
'localHeaderRelativeOffset' => 0,
'dataOffset' => 0, # localHeaderRelativeOffset + header length
@_
);
$self->{'externalFileName'} = $externalFileName;
$self->{'fh'} = $fh;
$self->{'possibleEocdOffset'} = $possibleEocdOffset;
return $self;
}
sub isDirectory {
my $self = shift;
return (
substr( $self->fileName, -1, 1 ) eq '/'
and
$self->uncompressedSize == 0
);
}
# Seek to the beginning of the local header, just past the signature.
# Verify that the local header signature is in fact correct.
# Update the localHeaderRelativeOffset if necessary by adding the possibleEocdOffset.
# Returns status.
sub _seekToLocalHeader {
my $self = shift;
my $where = shift; # optional
my $previousWhere = shift; # optional
$where = $self->localHeaderRelativeOffset() unless defined($where);
# avoid loop on certain corrupt files (from Julian Field)
return _formatError("corrupt zip file")
if defined($previousWhere) && $where == $previousWhere;
my $status;
my $signature;
$status = $self->fh()->seek( $where, IO::Seekable::SEEK_SET );
return _ioError("seeking to local header") unless $status;
( $status, $signature ) =
_readSignature( $self->fh(), $self->externalFileName(),
LOCAL_FILE_HEADER_SIGNATURE );
return $status if $status == AZ_IO_ERROR;
# retry with EOCD offset if any was given.
if ( $status == AZ_FORMAT_ERROR && $self->{'possibleEocdOffset'} ) {
$status = $self->_seekToLocalHeader(
$self->localHeaderRelativeOffset() + $self->{'possibleEocdOffset'},
$where
);
if ( $status == AZ_OK ) {
$self->{'localHeaderRelativeOffset'} +=
$self->{'possibleEocdOffset'};
$self->{'possibleEocdOffset'} = 0;
}
}
return $status;
}
# Because I'm going to delete the file handle, read the local file
# header if the file handle is seekable. If it isn't, I assume that
# I've already read the local header.
# Return ( $status, $self )
sub _become {
my $self = shift;
my $newClass = shift;
return $self if ref($self) eq $newClass;
my $status = AZ_OK;
if ( _isSeekable( $self->fh() ) ) {
my $here = $self->fh()->tell();
$status = $self->_seekToLocalHeader();
$status = $self->_readLocalFileHeader() if $status == AZ_OK;
$self->fh()->seek( $here, IO::Seekable::SEEK_SET );
return $status unless $status == AZ_OK;
}
delete( $self->{'eocdCrc32'} );
delete( $self->{'diskNumberStart'} );
delete( $self->{'localHeaderRelativeOffset'} );
delete( $self->{'dataOffset'} );
return $self->SUPER::_become($newClass);
}
sub diskNumberStart {
shift->{'diskNumberStart'};
}
sub localHeaderRelativeOffset {
shift->{'localHeaderRelativeOffset'};
}
sub dataOffset {
shift->{'dataOffset'};
}
# Skip local file header, updating only extra field stuff.
# Assumes that fh is positioned before signature.
sub _skipLocalFileHeader {
my $self = shift;
my $header;
my $bytesRead = $self->fh()->read( $header, LOCAL_FILE_HEADER_LENGTH );
if ( $bytesRead != LOCAL_FILE_HEADER_LENGTH ) {
return _ioError("reading local file header");
}
my $fileNameLength;
my $extraFieldLength;
my $bitFlag;
(
undef, # $self->{'versionNeededToExtract'},
$bitFlag,
undef, # $self->{'compressionMethod'},
undef, # $self->{'lastModFileDateTime'},
undef, # $crc32,
undef, # $compressedSize,
undef, # $uncompressedSize,
$fileNameLength,
$extraFieldLength
) = unpack( LOCAL_FILE_HEADER_FORMAT, $header );
if ($fileNameLength) {
$self->fh()->seek( $fileNameLength, IO::Seekable::SEEK_CUR )
or return _ioError("skipping local file name");
}
if ($extraFieldLength) {
$bytesRead =
$self->fh()->read( $self->{'localExtraField'}, $extraFieldLength );
if ( $bytesRead != $extraFieldLength ) {
return _ioError("reading local extra field");
}
}
$self->{'dataOffset'} = $self->fh()->tell();
if ( $bitFlag & GPBF_HAS_DATA_DESCRIPTOR_MASK ) {
# Read the crc32, compressedSize, and uncompressedSize from the
# extended data descriptor, which directly follows the compressed data.
#
# Skip over the compressed file data (assumes that EOCD compressedSize
# was correct)
$self->fh()->seek( $self->{'compressedSize'}, IO::Seekable::SEEK_CUR )
or return _ioError("seeking to extended local header");
# these values should be set correctly from before.
my $oldCrc32 = $self->{'eocdCrc32'};
my $oldCompressedSize = $self->{'compressedSize'};
my $oldUncompressedSize = $self->{'uncompressedSize'};
my $status = $self->_readDataDescriptor();
return $status unless $status == AZ_OK;
return _formatError(
"CRC or size mismatch while skipping data descriptor")
if ( $oldCrc32 != $self->{'crc32'}
|| $oldUncompressedSize != $self->{'uncompressedSize'} );
}
return AZ_OK;
}
# Read from a local file header into myself. Returns AZ_OK if successful.
# Assumes that fh is positioned after signature.
# Note that crc32, compressedSize, and uncompressedSize will be 0 if
# GPBF_HAS_DATA_DESCRIPTOR_MASK is set in the bitFlag.
sub _readLocalFileHeader {
my $self = shift;
my $header;
my $bytesRead = $self->fh()->read( $header, LOCAL_FILE_HEADER_LENGTH );
if ( $bytesRead != LOCAL_FILE_HEADER_LENGTH ) {
return _ioError("reading local file header");
}
my $fileNameLength;
my $crc32;
my $compressedSize;
my $uncompressedSize;
my $extraFieldLength;
(
$self->{'versionNeededToExtract'}, $self->{'bitFlag'},
$self->{'compressionMethod'}, $self->{'lastModFileDateTime'},
$crc32, $compressedSize,
$uncompressedSize, $fileNameLength,
$extraFieldLength
) = unpack( LOCAL_FILE_HEADER_FORMAT, $header );
if ($fileNameLength) {
my $fileName;
$bytesRead = $self->fh()->read( $fileName, $fileNameLength );
if ( $bytesRead != $fileNameLength ) {
return _ioError("reading local file name");
}
$self->fileName($fileName);
}
if ($extraFieldLength) {
$bytesRead =
$self->fh()->read( $self->{'localExtraField'}, $extraFieldLength );
if ( $bytesRead != $extraFieldLength ) {
return _ioError("reading local extra field");
}
}
$self->{'dataOffset'} = $self->fh()->tell();
if ( $self->hasDataDescriptor() ) {
# Read the crc32, compressedSize, and uncompressedSize from the
# extended data descriptor.
# Skip over the compressed file data (assumes that EOCD compressedSize
# was correct)
$self->fh()->seek( $self->{'compressedSize'}, IO::Seekable::SEEK_CUR )
or return _ioError("seeking to extended local header");
my $status = $self->_readDataDescriptor();
return $status unless $status == AZ_OK;
}
else {
return _formatError(
"CRC or size mismatch after reading data descriptor")
if ( $self->{'crc32'} != $crc32
|| $self->{'uncompressedSize'} != $uncompressedSize );
}
return AZ_OK;
}
# This will read the data descriptor, which is after the end of compressed file
# data in members that that have GPBF_HAS_DATA_DESCRIPTOR_MASK set in their
# bitFlag.
# The only reliable way to find these is to rely on the EOCD compressedSize.
# Assumes that file is positioned immediately after the compressed data.
# Returns status; sets crc32, compressedSize, and uncompressedSize.
sub _readDataDescriptor {
my $self = shift;
my $signatureData;
my $header;
my $crc32;
my $compressedSize;
my $uncompressedSize;
my $bytesRead = $self->fh()->read( $signatureData, SIGNATURE_LENGTH );
return _ioError("reading header signature")
if $bytesRead != SIGNATURE_LENGTH;
my $signature = unpack( SIGNATURE_FORMAT, $signatureData );
# unfortunately, the signature appears to be optional.
if ( $signature == DATA_DESCRIPTOR_SIGNATURE
&& ( $signature != $self->{'crc32'} ) )
{
$bytesRead = $self->fh()->read( $header, DATA_DESCRIPTOR_LENGTH );
return _ioError("reading data descriptor")
if $bytesRead != DATA_DESCRIPTOR_LENGTH;
( $crc32, $compressedSize, $uncompressedSize ) =
unpack( DATA_DESCRIPTOR_FORMAT, $header );
}
else {
$bytesRead =
$self->fh()->read( $header, DATA_DESCRIPTOR_LENGTH_NO_SIG );
return _ioError("reading data descriptor")
if $bytesRead != DATA_DESCRIPTOR_LENGTH_NO_SIG;
$crc32 = $signature;
( $compressedSize, $uncompressedSize ) =
unpack( DATA_DESCRIPTOR_FORMAT_NO_SIG, $header );
}
$self->{'eocdCrc32'} = $self->{'crc32'}
unless defined( $self->{'eocdCrc32'} );
$self->{'crc32'} = $crc32;
$self->{'compressedSize'} = $compressedSize;
$self->{'uncompressedSize'} = $uncompressedSize;
return AZ_OK;
}
# Read a Central Directory header. Return AZ_OK on success.
# Assumes that fh is positioned right after the signature.
sub _readCentralDirectoryFileHeader {
my $self = shift;
my $fh = $self->fh();
my $header = '';
my $bytesRead = $fh->read( $header, CENTRAL_DIRECTORY_FILE_HEADER_LENGTH );
if ( $bytesRead != CENTRAL_DIRECTORY_FILE_HEADER_LENGTH ) {
return _ioError("reading central dir header");
}
my ( $fileNameLength, $extraFieldLength, $fileCommentLength );
(
$self->{'versionMadeBy'},
$self->{'fileAttributeFormat'},
$self->{'versionNeededToExtract'},
$self->{'bitFlag'},
$self->{'compressionMethod'},
$self->{'lastModFileDateTime'},
$self->{'crc32'},
$self->{'compressedSize'},
$self->{'uncompressedSize'},
$fileNameLength,
$extraFieldLength,
$fileCommentLength,
$self->{'diskNumberStart'},
$self->{'internalFileAttributes'},
$self->{'externalFileAttributes'},
$self->{'localHeaderRelativeOffset'}
) = unpack( CENTRAL_DIRECTORY_FILE_HEADER_FORMAT, $header );
$self->{'eocdCrc32'} = $self->{'crc32'};
if ($fileNameLength) {
$bytesRead = $fh->read( $self->{'fileName'}, $fileNameLength );
if ( $bytesRead != $fileNameLength ) {
_ioError("reading central dir filename");
}
}
if ($extraFieldLength) {
$bytesRead = $fh->read( $self->{'cdExtraField'}, $extraFieldLength );
if ( $bytesRead != $extraFieldLength ) {
return _ioError("reading central dir extra field");
}
}
if ($fileCommentLength) {
$bytesRead = $fh->read( $self->{'fileComment'}, $fileCommentLength );
if ( $bytesRead != $fileCommentLength ) {
return _ioError("reading central dir file comment");
}
}
# NK 10/21/04: added to avoid problems with manipulated headers
if ( $self->{'uncompressedSize'} != $self->{'compressedSize'}
and $self->{'compressionMethod'} == COMPRESSION_STORED )
{
$self->{'uncompressedSize'} = $self->{'compressedSize'};
}
$self->desiredCompressionMethod( $self->compressionMethod() );
return AZ_OK;
}
sub rewindData {
my $self = shift;
my $status = $self->SUPER::rewindData(@_);
return $status unless $status == AZ_OK;
return AZ_IO_ERROR unless $self->fh();
$self->fh()->clearerr();
# Seek to local file header.
# The only reason that I'm doing this this way is that the extraField
# length seems to be different between the CD header and the LF header.
$status = $self->_seekToLocalHeader();
return $status unless $status == AZ_OK;
# skip local file header
$status = $self->_skipLocalFileHeader();
return $status unless $status == AZ_OK;
# Seek to beginning of file data
$self->fh()->seek( $self->dataOffset(), IO::Seekable::SEEK_SET )
or return _ioError("seeking to beginning of file data");
return AZ_OK;
}
# Return bytes read. Note that first parameter is a ref to a buffer.
# my $data;
# my ( $bytesRead, $status) = $self->readRawChunk( \$data, $chunkSize );
sub _readRawChunk {
my ( $self, $dataRef, $chunkSize ) = @_;
return ( 0, AZ_OK ) unless $chunkSize;
my $bytesRead = $self->fh()->read( $$dataRef, $chunkSize )
or return ( 0, _ioError("reading data") );
return ( $bytesRead, AZ_OK );
}
1;
ARCHIVE_ZIP_ZIPFILEMEMBER
s/^ //mg for values %fatpacked;
unshift @INC, sub {
if (my $fat = $fatpacked{$_[1]}) {
if ($] < 5.008) {
return sub {
return 0 unless length $fat;
$fat =~ s/^([^\n]*\n?)//;
$_ = $1;
return 1;
};
}
open my $fh, '<', \$fat
or die "FatPacker error loading $_[1] (could be a perl installation issue?)";
return $fh;
}
return
};
} # END OF FATPACK CODE
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