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-rw-r--r--lib/Archive/Zip/Archive.pm1020
-rw-r--r--lib/Archive/Zip/BufferedFileHandle.pm131
-rw-r--r--lib/Archive/Zip/DirectoryMember.pm80
-rw-r--r--lib/Archive/Zip/FAQ.pod344
-rw-r--r--lib/Archive/Zip/FileMember.pm64
-rw-r--r--lib/Archive/Zip/Member.pm1247
-rw-r--r--lib/Archive/Zip/MemberRead.pm348
-rw-r--r--lib/Archive/Zip/MockFileHandle.pm69
-rw-r--r--lib/Archive/Zip/NewFileMember.pm77
-rw-r--r--lib/Archive/Zip/StringMember.pm64
-rw-r--r--lib/Archive/Zip/Tree.pm48
-rw-r--r--lib/Archive/Zip/ZipFileMember.pm416
12 files changed, 3908 insertions, 0 deletions
diff --git a/lib/Archive/Zip/Archive.pm b/lib/Archive/Zip/Archive.pm
new file mode 100644
index 0000000..323de61
--- /dev/null
+++ b/lib/Archive/Zip/Archive.pm
@@ -0,0 +1,1020 @@
+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 {
+ $VERSION = '1.49';
+ @ISA = qw( Archive::Zip );
+
+ if ($^O eq 'MSWin32') {
+ require Win32;
+ require Encode;
+ Encode->import(qw{ encode_utf8 decode_utf8 });
+ }
+}
+
+use Archive::Zip qw(
+ :CONSTANTS
+ :ERROR_CODES
+ :PKZIP_CONSTANTS
+ :UTILITY_METHODS
+);
+
+our $UNICODE;
+
+# 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, # should be # of members
+ 'numberOfCentralDirectories' => 0, # should 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, $compressionLevel) = @_;
+ }
+
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $fileName = Win32::GetANSIPathName($fileName);
+ }
+
+ my $newMember = Archive::Zip::Member->newFromFile($fileName, $newName);
+ $newMember->desiredCompressionLevel($compressionLevel);
+ if ($self->{'storeSymbolicLink'} && -l $fileName) {
+ my $newMember =
+ Archive::Zip::Member->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);
+ }
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $newMember->{'fileName'} =
+ encode_utf8(Win32::GetLongPathName($fileName));
+ }
+ 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 $newMember =
+ Archive::Zip::Member->newFromString($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, $newName) = @_;
+ }
+
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $name = Win32::GetANSIPathName($name);
+ }
+
+ my $newMember = Archive::Zip::Member->newDirectoryNamed($name, $newName);
+ if ($self->{'storeSymbolicLink'} && -l $name) {
+ my $link = readlink $name;
+ ($newName =~ s{/$}{}) if $newName; # Strip trailing /
+ my $newMember = Archive::Zip::Member->newFromString($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);
+ }
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $newMember->{'fileName'} = encode_utf8(Win32::GetLongPathName($name));
+ }
+ 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, $compressionLevel) = @_;
+ }
+
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $name = Win32::GetANSIPathName($name);
+ }
+
+ $name =~ s{/$}{};
+ 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, $zipName)
+ || File::Copy::copy($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 $newMember =
+ Archive::Zip::Member->_newFromZipFile($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, $header);
+
+ if ($self->{'diskNumber'} == 0xFFFF ||
+ $self->{'diskNumberWithStartOfCentralDirectory'} == 0xFFFF ||
+ $self->{'numberOfCentralDirectoriesOnThisDisk'} == 0xFFFF ||
+ $self->{'numberOfCentralDirectories'} == 0xFFFF ||
+ $self->{'centralDirectorySize'} == 0xFFFFFFFF ||
+ $self->{'centralDirectoryOffsetWRTStartingDiskNumber'} == 0xFFFFFFFF) {
+ return _formatError("zip64 not supported" . Dumper($self));
+ }
+use Data::Dumper;
+ 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($startDir);
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ push(@files, Win32::GetANSIPathName($File::Find::name)) if (&$pred);
+ $dir = Win32::GetANSIPathName($dir);
+ } else {
+ push(@files, $File::Find::name) if (&$pred);
+ }
+ chdir($dir);
+ };
+
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $root = Win32::GetANSIPathName($root);
+ }
+ 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 $isDir;
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $isDir = -d Win32::GetANSIPathName($fileName);
+ } else {
+ $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);
+ if (defined $dest) {
+ if ($dest !~ m{/$}) {
+ $dest .= '/';
+ }
+ } else {
+ $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 =
+ $isDir
+ ? Archive::Zip::Member->newDirectoryNamed($fileName, $memberName)
+ : Archive::Zip::Member->newFromFile($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 were not 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;
diff --git a/lib/Archive/Zip/BufferedFileHandle.pm b/lib/Archive/Zip/BufferedFileHandle.pm
new file mode 100644
index 0000000..7abc35d
--- /dev/null
+++ b/lib/Archive/Zip/BufferedFileHandle.pm
@@ -0,0 +1,131 @@
+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 = '1.49';
+ $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;
diff --git a/lib/Archive/Zip/DirectoryMember.pm b/lib/Archive/Zip/DirectoryMember.pm
new file mode 100644
index 0000000..640306b
--- /dev/null
+++ b/lib/Archive/Zip/DirectoryMember.pm
@@ -0,0 +1,80 @@
+package Archive::Zip::DirectoryMember;
+
+use strict;
+use File::Path;
+
+use vars qw( $VERSION @ISA );
+
+BEGIN {
+ $VERSION = '1.49';
+ @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;
diff --git a/lib/Archive/Zip/FAQ.pod b/lib/Archive/Zip/FAQ.pod
new file mode 100644
index 0000000..d03f883
--- /dev/null
+++ b/lib/Archive/Zip/FAQ.pod
@@ -0,0 +1,344 @@
+=head1 NAME
+
+Archive::Zip::FAQ - Answers to a few frequently asked questions about Archive::Zip
+
+=head1 DESCRIPTION
+
+It seems that I keep answering the same questions over and over again. I
+assume that this is because my documentation is deficient, rather than that
+people don't read the documentation.
+
+So this FAQ is an attempt to cut down on the number of personal answers I have
+to give. At least I can now say "You I<did> read the FAQ, right?".
+
+The questions are not in any particular order. The answers assume the current
+version of Archive::Zip; some of the answers depend on newly added/fixed
+functionality.
+
+=head1 Install problems on RedHat 8 or 9 with Perl 5.8.0
+
+B<Q:> Archive::Zip won't install on my RedHat 9 system! It's broke!
+
+B<A:> This has become something of a FAQ.
+Basically, RedHat broke some versions of Perl by setting LANG to UTF8.
+They apparently have a fixed version out as an update.
+
+You might try running CPAN or creating your Makefile after exporting the LANG
+environment variable as
+
+C<LANG=C>
+
+L<https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=87682>
+
+=head1 Why is my zip file so big?
+
+B<Q:> My zip file is actually bigger than what I stored in it! Why?
+
+B<A:> Some things to make sure of:
+
+=over 4
+
+=item Make sure that you are requesting COMPRESSION_DEFLATED if you are storing strings.
+
+$member->desiredCompressionMethod( COMPRESSION_DEFLATED );
+
+=item Don't make lots of little files if you can help it.
+
+Since zip computes the compression tables for each member, small
+members without much entropy won't compress well. Instead, if you've
+got lots of repeated strings in your data, try to combine them into
+one big member.
+
+=item Make sure that you are requesting COMPRESSION_STORED if you are storing things that are already compressed.
+
+If you're storing a .zip, .jpg, .mp3, or other compressed file in a zip,
+then don't compress them again. They'll get bigger.
+
+=back
+
+=head1 Sample code?
+
+B<Q:> Can you send me code to do (whatever)?
+
+B<A:> Have you looked in the C<examples/> directory yet? It contains:
+
+=over 4
+
+=item examples/calcSizes.pl -- How to find out how big a Zip file will be before writing it
+
+=item examples/copy.pl -- Copies one Zip file to another
+
+=item examples/extract.pl -- extract file(s) from a Zip
+
+=item examples/mailZip.pl -- make and mail a zip file
+
+=item examples/mfh.pl -- demo for use of MockFileHandle
+
+=item examples/readScalar.pl -- shows how to use IO::Scalar as the source of a Zip read
+
+=item examples/selfex.pl -- a brief example of a self-extracting Zip
+
+=item examples/unzipAll.pl -- uses Archive::Zip::Tree to unzip an entire Zip
+
+=item examples/updateZip.pl -- shows how to read/modify/write a Zip
+
+=item examples/updateTree.pl -- shows how to update a Zip in place
+
+=item examples/writeScalar.pl -- shows how to use IO::Scalar as the destination of a Zip write
+
+=item examples/writeScalar2.pl -- shows how to use IO::String as the destination of a Zip write
+
+=item examples/zip.pl -- Constructs a Zip file
+
+=item examples/zipcheck.pl -- One way to check a Zip file for validity
+
+=item examples/zipinfo.pl -- Prints out information about a Zip archive file
+
+=item examples/zipGrep.pl -- Searches for text in Zip files
+
+=item examples/ziptest.pl -- Lists a Zip file and checks member CRCs
+
+=item examples/ziprecent.pl -- Puts recent files into a zipfile
+
+=item examples/ziptest.pl -- Another way to check a Zip file for validity
+
+=back
+
+=head1 Can't Read/modify/write same Zip file
+
+B<Q:> Why can't I open a Zip file, add a member, and write it back? I get an
+error message when I try.
+
+B<A:> Because Archive::Zip doesn't (and can't, generally) read file contents into memory,
+the original Zip file is required to stay around until the writing of the new
+file is completed.
+
+The best way to do this is to write the Zip to a temporary file and then
+rename the temporary file to have the old name (possibly after deleting the
+old one).
+
+Archive::Zip v1.02 added the archive methods C<overwrite()> and
+C<overwriteAs()> to do this simply and carefully.
+
+See C<examples/updateZip.pl> for an example of this technique.
+
+=head1 File creation time not set
+
+B<Q:> Upon extracting files, I see that their modification (and access) times are
+set to the time in the Zip archive. However, their creation time is not set to
+the same time. Why?
+
+B<A:> Mostly because Perl doesn't give cross-platform access to I<creation time>.
+Indeed, many systems (like Unix) don't support such a concept.
+However, if yours does, you can easily set it. Get the modification time from
+the member using C<lastModTime()>.
+
+=head1 Can't use Archive::Zip on gzip files
+
+B<Q:> Can I use Archive::Zip to extract Unix gzip files?
+
+B<A:> No.
+
+There is a distinction between Unix gzip files, and Zip archives that
+also can use the gzip compression.
+
+Depending on the format of the gzip file, you can use L<Compress::Raw::Zlib>, or
+L<Archive::Tar> to decompress it (and de-archive it in the case of Tar files).
+
+You can unzip PKZIP/WinZip/etc/ archives using Archive::Zip (that's what
+it's for) as long as any compressed members are compressed using
+Deflate compression.
+
+=head1 Add a directory/tree to a Zip
+
+B<Q:> How can I add a directory (or tree) full of files to a Zip?
+
+B<A:> You can use the Archive::Zip::addTree*() methods:
+
+ 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');
+
+=head1 Extract a directory/tree
+
+B<Q:> How can I extract some (or all) files from a Zip into a different
+directory?
+
+B<A:> You can use the Archive::Zip::extractTree() method:
+??? ||
+
+ # now extract the same files into /tmpx
+ $zip->extractTree( 'stuff', '/tmpx' );
+
+=head1 Update a directory/tree
+
+B<Q:> How can I update a Zip from a directory tree, adding or replacing only
+the newer files?
+
+B<A:> You can use the Archive::Zip::updateTree() method that was added in version 1.09.
+
+=head1 Zip times might be off by 1 second
+
+B<Q:> It bothers me greatly that my file times are wrong by one second about half
+the time. Why don't you do something about it?
+
+B<A:> Get over it. This is a result of the Zip format storing times in DOS
+format, which has a resolution of only two seconds.
+
+=head1 Zip times don't include time zone information
+
+B<Q:> My file times don't respect time zones. What gives?
+
+B<A:> If this is important to you, please submit patches to read the various
+Extra Fields that encode times with time zones. I'm just using the DOS
+Date/Time, which doesn't have a time zone.
+
+=head1 How do I make a self-extracting Zip
+
+B<Q:> I want to make a self-extracting Zip file. Can I do this?
+
+B<A:> Yes. You can write a self-extracting archive stub (that is, a version of
+unzip) to the output filehandle that you pass to writeToFileHandle(). See
+examples/selfex.pl for how to write a self-extracting archive.
+
+However, you should understand that this will only work on one kind of
+platform (the one for which the stub was compiled).
+
+=head1 How can I deal with Zips with prepended garbage (i.e. from Sircam)
+
+B<Q:> How can I tell if a Zip has been damaged by adding garbage to the
+beginning or inside the file?
+
+B<A:> I added code for this for the Amavis virus scanner. You can query archives
+for their 'eocdOffset' property, which should be 0:
+
+ if ($zip->eocdOffset > 0)
+ { warn($zip->eocdOffset . " bytes of garbage at beginning or within Zip") }
+
+When members are extracted, this offset will be used to adjust the start of
+the member if necessary.
+
+=head1 Can't extract Shrunk files
+
+B<Q:> I'm trying to extract a file out of a Zip produced by PKZIP, and keep
+getting this error message:
+
+ error: Unsupported compression combination: read 6, write 0
+
+B<A:> You can't uncompress this archive member. Archive::Zip only supports uncompressed
+members, and compressed members that are compressed using the compression
+supported by Compress::Raw::Zlib. That means only Deflated and Stored members.
+
+Your file is compressed using the Shrink format, which is not supported by
+Compress::Raw::Zlib.
+
+You could, perhaps, use a command-line UnZip program (like the Info-Zip
+one) to extract this.
+
+=head1 Can't do decryption
+
+B<Q:> How do I decrypt encrypted Zip members?
+
+B<A:> With some other program or library. Archive::Zip doesn't support decryption,
+and probably never will (unless I<you> write it).
+
+=head1 How to test file integrity?
+
+B<Q:> How can Archive::Zip can test the validity of a Zip file?
+
+B<A:> If you try to decompress the file, the gzip streams will report errors
+if you have garbage. Most of the time.
+
+If you try to open the file and a central directory structure can't be
+found, an error will be reported.
+
+When a file is being read, if we can't find a proper PK.. signature in
+the right places we report a format error.
+
+If there is added garbage at the beginning of a Zip file (as inserted
+by some viruses), you can find out about it, but Archive::Zip will ignore it,
+and you can still use the archive. When it gets written back out the
+added stuff will be gone.
+
+There are two ready-to-use utilities in the examples directory that can
+be used to test file integrity, or that you can use as examples
+for your own code:
+
+=over 4
+
+=item examples/zipcheck.pl shows how to use an attempted extraction to test a file.
+
+=item examples/ziptest.pl shows how to test CRCs in a file.
+
+=back
+
+=head1 Duplicate files in Zip?
+
+B<Q:> Archive::Zip let me put the same file in my Zip twice! Why don't you prevent this?
+
+B<A:> As far as I can tell, this is not disallowed by the Zip spec. If you
+think it's a bad idea, check for it yourself:
+
+ $zip->addFile($someFile, $someName) unless $zip->memberNamed($someName);
+
+I can even imagine cases where this might be useful (for instance, multiple
+versions of files).
+
+=head1 File ownership/permissions/ACLS/etc
+
+B<Q:> Why doesn't Archive::Zip deal with file ownership, ACLs, etc.?
+
+B<A:> There is no standard way to represent these in the Zip file format. If
+you want to send me code to properly handle the various extra fields that
+have been used to represent these through the years, I'll look at it.
+
+=head1 I can't compile but ActiveState only has an old version of Archive::Zip
+
+B<Q:> I've only installed modules using ActiveState's PPM program and
+repository. But they have a much older version of Archive::Zip than is in CPAN. Will
+you send me a newer PPM?
+
+B<A:> Probably not, unless I get lots of extra time. But there's no reason you
+can't install the version from CPAN. Archive::Zip is pure Perl, so all you need is
+NMAKE, which you can get for free from Microsoft (see the FAQ in the
+ActiveState documentation for details on how to install CPAN modules).
+
+=head1 My JPEGs (or MP3's) don't compress when I put them into Zips!
+
+B<Q:> How come my JPEGs and MP3's don't compress much when I put them into Zips?
+
+B<A:> Because they're already compressed.
+
+=head1 Under Windows, things lock up/get damaged
+
+B<Q:> I'm using Windows. When I try to use Archive::Zip, my machine locks up/makes
+funny sounds/displays a BSOD/corrupts data. How can I fix this?
+
+B<A:> First, try the newest version of Compress::Raw::Zlib. I know of
+Windows-related problems prior to v1.14 of that library.
+
+=head1 Zip contents in a scalar
+
+B<Q:> I want to read a Zip file from (or write one to) a scalar variable instead
+of a file. How can I do this?
+
+B<A:> Use C<IO::String> and the C<readFromFileHandle()> and
+C<writeToFileHandle()> methods.
+See C<examples/readScalar.pl> and C<examples/writeScalar.pl>.
+
+=head1 Reading from streams
+
+B<Q:> How do I read from a stream (like for the Info-Zip C<funzip> program)?
+
+B<A:> This is not currently supported, though writing to a stream is.
diff --git a/lib/Archive/Zip/FileMember.pm b/lib/Archive/Zip/FileMember.pm
new file mode 100644
index 0000000..5f1066e
--- /dev/null
+++ b/lib/Archive/Zip/FileMember.pm
@@ -0,0 +1,64 @@
+package Archive::Zip::FileMember;
+
+use strict;
+use vars qw( $VERSION @ISA );
+
+BEGIN {
+ $VERSION = '1.49';
+ @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;
diff --git a/lib/Archive/Zip/Member.pm b/lib/Archive/Zip/Member.pm
new file mode 100644
index 0000000..0026aa6
--- /dev/null
+++ b/lib/Archive/Zip/Member.pm
@@ -0,0 +1,1247 @@
+package Archive::Zip::Member;
+
+# A generic member of an archive
+
+use strict;
+use vars qw( $VERSION @ISA );
+
+BEGIN {
+ $VERSION = '1.49';
+ @ISA = qw( Archive::Zip );
+
+ if ($^O eq 'MSWin32') {
+ require Win32;
+ require Encode;
+ Encode->import(qw{ decode_utf8 });
+ }
+}
+
+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;
+
+# 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 = Archive::Zip::ZipFileMember->_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 $self =
+ Archive::Zip::StringMember->_newFromString($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 $self =
+ Archive::Zip::NewFileMember->_newFromFileNamed($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 $self =
+ Archive::Zip::DirectoryMember->_newNamed($directoryName, $newName);
+ return $self;
+}
+
+sub new {
+ my $class = shift;
+ my $self = {
+ 'lastModFileDateTime' => 0,
+ 'fileAttributeFormat' => FA_UNIX,
+ 'versionMadeBy' => 20,
+ 'versionNeededToExtract' => 20,
+ 'bitFlag' => ($Archive::Zip::UNICODE ? 0x0800 : 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,
+ 'password' => undef, # password for encrypted data
+ 'crc32c' => -1, # crc for decrypted data
+ @_
+ };
+ bless($self, $class);
+ $self->unixFileAttributes($self->DEFAULT_FILE_PERMISSIONS);
+ return $self;
+}
+
+sub _becomeDirectoryIfNecessary {
+ my $self = shift;
+ $self->_become('Archive::Zip::DirectoryMember')
+ 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) {
+ $self->{'bitFlag'} |= DEFLATING_COMPRESSION_MAXIMUM;
+ }
+
+ if ($Archive::Zip::UNICODE) {
+ $self->{'bitFlag'} |= 0x0800;
+ }
+ $self->{'bitFlag'};
+}
+
+sub password {
+ my $self = shift;
+ $self->{'password'} = shift if @_;
+ $self->{'password'};
+}
+
+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
+ if $self->uncompressedSize() == 0;
+ } elsif ($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 (defined $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 is not 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 $self->isSymbolicLink();
+
+ my ($status, $fh);
+ if ($^O eq 'MSWin32' && $Archive::Zip::UNICODE) {
+ $name = decode_utf8(Win32::GetFullPathName($name));
+ mkpath_win32($name);
+ Win32::CreateFile($name);
+ ($status, $fh) = _newFileHandle(Win32::GetANSIPathName($name), 'w');
+ } else {
+ mkpath(dirname($name)); # croaks on error
+ ($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 mkpath_win32 {
+ my $path = shift;
+ use File::Spec;
+
+ my ($volume, @path) = File::Spec->splitdir($path);
+ $path = File::Spec->catfile($volume, shift @path);
+ pop @path;
+ while (@path) {
+ $path = File::Spec->catfile($path, shift @path);
+ Win32::CreateDirectory($path);
+ }
+}
+
+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 $self = shift;
+ {
+ use bytes;
+ return SIGNATURE_LENGTH +
+ LOCAL_FILE_HEADER_LENGTH +
+ length($self->fileName()) +
+ length($self->localExtraField());
+ }
+}
+
+# Return the total size of my CD header
+sub _centralDirectoryHeaderSize {
+ my $self = shift;
+ {
+ use bytes;
+ return SIGNATURE_LENGTH +
+ CENTRAL_DIRECTORY_FILE_HEADER_LENGTH +
+ length($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 is not 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 $dt;
+}
+
+sub head {
+ my ($self, $mode) = (@_, 0);
+
+ use bytes;
+ return pack LOCAL_FILE_HEADER_FORMAT,
+ $self->versionNeededToExtract(),
+ $self->{'bitFlag'},
+ $self->desiredCompressionMethod(),
+ $self->lastModFileDateTime(),
+ $self->hasDataDescriptor()
+ ? (0,0,0) # crc, compr & uncompr all zero if data descriptor present
+ : (
+ $self->crc32(),
+ $mode
+ ? $self->_writeOffset() # compressed size
+ : $self->compressedSize(), # may need to be re-written later
+ $self->uncompressedSize(),
+ ),
+ length($self->fileName()),
+ length($self->localExtraField());
+}
+
+# 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 = $self->head(1);
+
+ $self->_print($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, $extraFieldLength, $fileCommentLength);
+ {
+ use bytes;
+ $fileNameLength = length($self->fileName());
+ $extraFieldLength = length($self->cdExtraField());
+ $fileCommentLength = length($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 = $self->head(1);
+
+ $self->_print($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;
+
+ $buffer && $self->isEncrypted and $buffer = $self->_decode($buffer);
+ $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('Archive::Zip::StringMember');
+ 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;
+ 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;
+ }
+ }
+ return AZ_OK;
+}
+
+# Return true if I depend on the named file
+sub _usesFileNamed {
+ return 0;
+}
+
+# ##############################################################################
+#
+# Decrypt section
+#
+# H.Merijn Brand (Tux) 2011-06-28
+#
+# ##############################################################################
+
+# This code is derived from the crypt source of unzip-6.0 dated 05 Jan 2007
+# Its license states:
+#
+# --8<---
+# Copyright (c) 1990-2007 Info-ZIP. All rights reserved.
+
+# See the accompanying file LICENSE, version 2005-Feb-10 or later
+# (the contents of which are also included in (un)zip.h) for terms of use.
+# If, for some reason, all these files are missing, the Info-ZIP license
+# also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
+#
+# crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h]
+
+# The main encryption/decryption source code for Info-Zip software was
+# originally written in Europe. To the best of our knowledge, it can
+# be freely distributed in both source and object forms from any country,
+# including the USA under License Exception TSU of the U.S. Export
+# Administration Regulations (section 740.13(e)) of 6 June 2002.
+
+# NOTE on copyright history:
+# Previous versions of this source package (up to version 2.8) were
+# not copyrighted and put in the public domain. If you cannot comply
+# with the Info-Zip LICENSE, you may want to look for one of those
+# public domain versions.
+#
+# This encryption code is a direct transcription of the algorithm from
+# Roger Schlafly, described by Phil Katz in the file appnote.txt. This
+# file (appnote.txt) is distributed with the PKZIP program (even in the
+# version without encryption capabilities).
+# -->8---
+
+# As of January 2000, US export regulations were amended to allow export
+# of free encryption source code from the US. As of June 2002, these
+# regulations were further relaxed to allow export of encryption binaries
+# associated with free encryption source code. The Zip 2.31, UnZip 5.52
+# and Wiz 5.02 archives now include full crypto source code. As of the
+# Zip 2.31 release, all official binaries include encryption support; the
+# former "zcr" archives ceased to exist.
+# (Note that restrictions may still exist in other countries, of course.)
+
+# For now, we just support the decrypt stuff
+# All below methods are supposed to be private
+
+# use Data::Peek;
+
+my @keys;
+my @crct = do {
+ my $xor = 0xedb88320;
+ my @crc = (0) x 1024;
+
+ # generate a crc for every 8-bit value
+ foreach my $n (0 .. 255) {
+ my $c = $n;
+ $c = $c & 1 ? $xor ^ ($c >> 1) : $c >> 1 for 1 .. 8;
+ $crc[$n] = _revbe($c);
+ }
+
+ # generate crc for each value followed by one, two, and three zeros */
+ foreach my $n (0 .. 255) {
+ my $c = ($crc[($crc[$n] >> 24) ^ 0] ^ ($crc[$n] << 8)) & 0xffffffff;
+ $crc[$_ * 256 + $n] = $c for 1 .. 3;
+ }
+ map { _revbe($crc[$_]) } 0 .. 1023;
+};
+
+sub _crc32 {
+ my ($c, $b) = @_;
+ return ($crct[($c ^ $b) & 0xff] ^ ($c >> 8));
+} # _crc32
+
+sub _revbe {
+ my $w = shift;
+ return (($w >> 24) +
+ (($w >> 8) & 0xff00) +
+ (($w & 0xff00) << 8) +
+ (($w & 0xff) << 24));
+} # _revbe
+
+sub _update_keys {
+ use integer;
+ my $c = shift; # signed int
+ $keys[0] = _crc32($keys[0], $c);
+ $keys[1] = (($keys[1] + ($keys[0] & 0xff)) * 0x08088405 + 1) & 0xffffffff;
+ my $keyshift = $keys[1] >> 24;
+ $keys[2] = _crc32($keys[2], $keyshift);
+} # _update_keys
+
+sub _zdecode ($) {
+ my $c = shift;
+ my $t = ($keys[2] & 0xffff) | 2;
+ _update_keys($c ^= ((($t * ($t ^ 1)) >> 8) & 0xff));
+ return $c;
+} # _zdecode
+
+sub _decode {
+ my $self = shift;
+ my $buff = shift;
+
+ $self->isEncrypted or return $buff;
+
+ my $pass = $self->password;
+ defined $pass or return "";
+
+ @keys = (0x12345678, 0x23456789, 0x34567890);
+ _update_keys($_) for unpack "C*", $pass;
+
+ # DDumper { uk => [ @keys ] };
+
+ my $head = substr $buff, 0, 12, "";
+ my @head = map { _zdecode($_) } unpack "C*", $head;
+ my $x =
+ $self->{externalFileAttributes}
+ ? ($self->{lastModFileDateTime} >> 8) & 0xff
+ : $self->{crc32} >> 24;
+ $head[-1] == $x or return ""; # Password fail
+
+ # Worth checking ...
+ $self->{crc32c} = (unpack LOCAL_FILE_HEADER_FORMAT, pack "C*", @head)[3];
+
+ # DHexDump ($buff);
+ $buff = pack "C*" => map { _zdecode($_) } unpack "C*" => $buff;
+
+ # DHexDump ($buff);
+ return $buff;
+} # _decode
+
+1;
diff --git a/lib/Archive/Zip/MemberRead.pm b/lib/Archive/Zip/MemberRead.pm
new file mode 100644
index 0000000..e0f0b14
--- /dev/null
+++ b/lib/Archive/Zip/MemberRead.pm
@@ -0,0 +1,348 @@
+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 = '1.49';
+ $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 different 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 argument 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.
+
+=item getline( { preserve_line_ending => 1 } )
+
+Returns the next line including the line ending.
+
+=cut
+
+sub getline {
+ my ($self, $argref) = @_;
+
+ my $size = $self->buffer_size();
+ my $sep = $self->_sep_re();
+
+ my $preserve_line_ending;
+ if (ref $argref eq 'HASH') {
+ $preserve_line_ending = $argref->{'preserve_line_ending'};
+ $sep =~ s/\\([^A-Za-z_0-9])+/$1/g;
+ }
+
+ for (; ;) {
+ if ( $sep
+ && defined($self->{buffer})
+ && $self->{buffer} =~ s/^(.*?)$sep//s) {
+ my $line = $1;
+ $self->{line_no}++;
+ if ($preserve_line_ending) {
+ return $line . $sep;
+ } else {
+ return $line;
+ }
+ } 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 $ret;
+}
+
+1;
+
+=back
+
+=head1 AUTHOR
+
+Sreeji K. Das E<lt>sreeji_k@yahoo.comE<gt>
+
+See L<Archive::Zip> by Ned Konz without which this module does not make
+any sense!
+
+Minor mods by Ned Konz.
+
+=head1 COPYRIGHT
+
+Copyright 2002 Sreeji K. Das.
+
+This program is free software; you can redistribute it and/or modify it under
+the same terms as Perl itself.
+
+=cut
diff --git a/lib/Archive/Zip/MockFileHandle.pm b/lib/Archive/Zip/MockFileHandle.pm
new file mode 100644
index 0000000..8065f95
--- /dev/null
+++ b/lib/Archive/Zip/MockFileHandle.pm
@@ -0,0 +1,69 @@
+package Archive::Zip::MockFileHandle;
+
+# Output file handle that calls a custom write routine
+# Ned Konz, March 2000
+# This is provided to help with writing zip files
+# when you have to process them a chunk at a time.
+
+use strict;
+
+use vars qw{$VERSION};
+
+BEGIN {
+ $VERSION = '1.49';
+ $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;
diff --git a/lib/Archive/Zip/NewFileMember.pm b/lib/Archive/Zip/NewFileMember.pm
new file mode 100644
index 0000000..928d489
--- /dev/null
+++ b/lib/Archive/Zip/NewFileMember.pm
@@ -0,0 +1,77 @@
+package Archive::Zip::NewFileMember;
+
+use strict;
+use vars qw( $VERSION @ISA );
+
+BEGIN {
+ $VERSION = '1.49';
+ @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($$dataRef, $chunkSize)
+ or return (0, _ioError("reading data"));
+ return ($bytesRead, AZ_OK);
+}
+
+# If I already exist, extraction is a no-op.
+sub extractToFileNamed {
+ my $self = shift;
+ my $name = shift; # local FS name
+ if (File::Spec->rel2abs($name) eq
+ File::Spec->rel2abs($self->externalFileName()) and -r $name) {
+ return AZ_OK;
+ } else {
+ return $self->SUPER::extractToFileNamed($name, @_);
+ }
+}
+
+1;
diff --git a/lib/Archive/Zip/StringMember.pm b/lib/Archive/Zip/StringMember.pm
new file mode 100644
index 0000000..50e74c6
--- /dev/null
+++ b/lib/Archive/Zip/StringMember.pm
@@ -0,0 +1,64 @@
+package Archive::Zip::StringMember;
+
+use strict;
+use vars qw( $VERSION @ISA );
+
+BEGIN {
+ $VERSION = '1.49';
+ @ISA = qw( Archive::Zip::Member );
+}
+
+use Archive::Zip qw(
+ :CONSTANTS
+ :ERROR_CODES
+);
+
+# Create a new string member. Default is COMPRESSION_STORED.
+# Can take a ref to a string as well.
+sub _newFromString {
+ my $class = shift;
+ my $string = shift;
+ my $name = shift;
+ my $self = $class->new(@_);
+ $self->contents($string);
+ $self->fileName($name) if defined($name);
+
+ # Set the file date to now
+ $self->setLastModFileDateTimeFromUnix(time());
+ $self->unixFileAttributes($self->DEFAULT_FILE_PERMISSIONS);
+ return $self;
+}
+
+sub _become {
+ my $self = shift;
+ my $newClass = shift;
+ return $self if ref($self) eq $newClass;
+ delete($self->{'contents'});
+ return $self->SUPER::_become($newClass);
+}
+
+# Get or set my contents. Note that we do not call the superclass
+# version of this, because it calls us.
+sub contents {
+ my $self = shift;
+ my $string = shift;
+ if (defined($string)) {
+ $self->{'contents'} =
+ pack('C0a*', (ref($string) eq 'SCALAR') ? $$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;
diff --git a/lib/Archive/Zip/Tree.pm b/lib/Archive/Zip/Tree.pm
new file mode 100644
index 0000000..303a057
--- /dev/null
+++ b/lib/Archive/Zip/Tree.pm
@@ -0,0 +1,48 @@
+package Archive::Zip::Tree;
+
+use strict;
+use vars qw{$VERSION};
+
+BEGIN {
+ $VERSION = '1.49';
+}
+
+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 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, perl@bike-nomad.com
+
+=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
+
diff --git a/lib/Archive/Zip/ZipFileMember.pm b/lib/Archive/Zip/ZipFileMember.pm
new file mode 100644
index 0000000..cd4c875
--- /dev/null
+++ b/lib/Archive/Zip/ZipFileMember.pm
@@ -0,0 +1,416 @@
+package Archive::Zip::ZipFileMember;
+
+use strict;
+use vars qw( $VERSION @ISA );
+
+BEGIN {
+ $VERSION = '1.49';
+ @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 is not, 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;
+
+ # The buffer withe encrypted data is prefixed with a new
+ # encrypted 12 byte header. The size only changes when
+ # the buffer is also compressed
+ $self->isEncrypted && $oldUncompressedSize > $self->{uncompressedSize}
+ and $oldUncompressedSize -= DATA_DESCRIPTOR_LENGTH;
+
+ return _formatError(
+ "CRC or size mismatch while skipping data descriptor")
+ if ( $oldCrc32 != $self->{'crc32'}
+ || $oldUncompressedSize != $self->{'uncompressedSize'});
+
+ $self->{'crc32'} = 0
+ if $self->compressionMethod() == COMPRESSION_STORED ;
+ }
+
+ 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 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;
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