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#
#
# This package is now deprecated and is no longer used.
#
#
package MailScanner::BinHex;
=head1 NAME
MIME::Decoder::BinHex - decode a "binhex" stream
=head1 SYNOPSIS
A generic decoder object; see L<MIME::Decoder> for usage.
Also supports a preamble() method to recover text before
the binhexed portion of the stream.
=head1 DESCRIPTION
A MIME::Decoder subclass for a nonstandard encoding whereby
data are binhex-encoded. Common non-standard MIME encodings for this:
x-uu
x-uuencode
=head1 AUTHOR
Julian Field (F<mailscanner@ecs.soton.ac.uk>).
All rights reserved. This program is free software; you can redistribute
it and/or modify it under the same terms as Perl itself.
=head1 VERSION
$Revision: 3036 $ $Date: 2005-05-17 11:27:12 +0100 (Tue, 17 May 2005) $
=cut
require 5.002;
use vars qw(@ISA $VERSION);
use MIME::Decoder;
use MIME::Tools;
use Convert::BinHex;
@ISA = qw(MIME::Decoder);
# The package version, both in 1.23 style *and* usable by MakeMaker:
$VERSION = substr q$Revision: 3036 $, 10;
#------------------------------
#
# decode_it IN, OUT
#
sub decode_it {
my ($self, $in, $out) = @_;
my ($mode, $file);
my (@preamble, @data);
local $_;
my $H2B = Convert::BinHex->hex2bin;
#my $H2B = Convert::BinHex->open($in);
my $line;
$self->{MDU_Preamble} = \@preamble;
$self->{MDU_Mode} = '600';
$self->{MDU_File} = undef;
### Find beginning...
$MailScanner::BinHex::Inline = 1;
if ($MailScanner::BinHex::Inline) {
while (defined($_ = $in->getline)) {
#print STDERR "Line is \"$_\"\n";
if (/^\(This file must be converted/) {
$_ = $in->getline;
last if /^:/;
}
push @preamble, $_;
}
die("binhex decoding: fell off end of file\n") if !defined($_);
} else {
while (defined($_ = $in->getline)) {
# Found the header? So start decoding it
last if /^:/;
push @preamble, $_;
}
## hit eof!
die("binhex decoding: no This file must be... found\n") if !defined($_);
}
### Decode:
# Don't rely on the comment always being there
#$self->whine(":H2B is $H2B\n");
#$self->whine("Header is " . $H2B->read_header . "\n");
#@data = $H2B->read_data;
#$out->print(@data);
#print STDERR "End of binhex stream\n";
#return 1;
#if (/^:/) {
my $data;
$data = $H2B->next($_); # or whine("Next error is $@ $!\n");
#print STDERR "Data line 1 is length \"" . length($data) . "\" \"$data\"\n";
my $len = unpack("C", $data);
while ($len > length($data)+21 && defined($line = $in->getline)) {
$data .= $H2B->next($line);
}
$data = substr($data, 22+$len);
$out->print($data);
#}
while (defined($_ = $in->getline)) {
$line = $_;
$data = $H2B->next($line);
#print STDERR "Data is length " . length($data) . " \"$data\"\n";
$out->print($data);
#chomp $line;
#print STDERR "Line is length " . length($line) . " \"$line\"\n";
#print STDERR "Line matches end\n" if $line =~ /:$/;
last if $line =~ /:$/;
}
#print STDERR "Broken out of loop\n";
#print STDERR "file incomplete, no end found\n" if !defined($_); # eof
1;
}
#------------------------------
#
# encode_it IN, OUT
#
sub encode_it {
my ($self, $in, $out) = @_;
my $line;
my $buf = '';
my $fname = (($self->head &&
$self->head->mime_attr('content-disposition.filename')) ||
'');
my $B2H = Convert::BinHex->bin2hex;
$out->print("(This file must be converted with BinHex 4.0)\n");
#while (defined($line = <$in>)) {
while ($in->read($buf, 1000)) {
$out->print($B2H->next($buf));
}
$out->print($B2H->done);
1;
}
#------------------------------
#
# last_preamble
#
# Return the last preamble as ref to array of lines.
# Gets reset by decode_it().
#
sub last_preamble {
my $self = shift;
return $self->{MDU_Preamble} || [];
}
#------------------------------
#
# last_mode
#
# Return the last mode.
# Gets reset to undef by decode_it().
#
sub last_mode {
shift->{MDU_Mode};
}
#------------------------------
#
# last_filename
#
# Return the last filename.
# Gets reset by decode_it().
#
sub last_filename {
shift->{MDU_File} || undef; #[];
}
#------------------------------
1;
|
