# Copyright (C) 2016-2018 all contributors
# License: AGPL-3.0+
# For retrieving attachments from messages in the WWW interface
package PublicInbox::WwwAttach; # internal package
use strict;
use warnings;
use Email::MIME::ContentType qw(parse_content_type);
use PublicInbox::MIME;
use PublicInbox::MsgIter;
# /$LISTNAME/$MESSAGE_ID/$IDX-$FILENAME
sub get_attach ($$$) {
my ($ctx, $idx, $fn) = @_;
my $res = [ 404, [ 'Content-Type', 'text/plain' ], [ "Not found\n" ] ];
my $mime = $ctx->{-inbox}->msg_by_mid($ctx->{mid}) or return $res;
$mime = PublicInbox::MIME->new($mime);
msg_iter($mime, sub {
my ($part, $depth, @idx) = @{$_[0]};
return if join('.', @idx) ne $idx;
$res->[0] = 200;
my $ct = $part->content_type;
$ct = parse_content_type($ct) if $ct;
# discrete == type, we remain Debian wheezy-compatible
if ($ct && (($ct->{discrete} || '') eq 'text')) {
# display all text as text/plain:
my $cset = $ct->{attributes}->{charset};
if ($cset && ($cset =~ /\A[\w-]+\z/)) {
$res->[1]->[1] .= qq(; charset=$cset);
}
} else { # TODO: allow user to configure safe types
$res->[1]->[1] = 'application/octet-stream';
}
$part = $part->body;
push @{$res->[1]}, 'Content-Length', bytes::length($part);
$res->[2]->[0] = $part;
});
$res;
}
1;