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#!/usr/bin/perl
# detach.cgi
# View one attachment from a message
use Socket;
require './mailboxes-lib.pl';
&ReadParse();
&can_user($in{'user'}) || &error($text{'mail_ecannot'});
@folders = &list_user_folders($in{'user'});
$folder = $folders[$in{'folder'}];
@mail = &mailbox_list_mails($in{'idx'}, $in{'idx'}, $folder);
$mail = $mail[$in{'idx'}];
&parse_mail($mail);
@sub = split(/\0/, $in{'sub'});
foreach $s (@sub) {
# We are looking at a mail within a mail ..
local $amail = &extract_mail($mail->{'attach'}->[$s]->{'data'});
&parse_mail($amail);
$mail = $amail;
}
$attach = $mail->{'attach'}->[$in{'attach'}];
if ($in{'scale'}) {
# Scale the gif or jpeg image to 48 pixels high
local $temp = &transname();
open(TEMP, ">$temp");
print TEMP $attach->{'data'};
close(TEMP);
$SIG{'CHLD'} = sub { wait; };
if ($attach->{'type'} eq 'image/gif') {
($pnmin, $pnmout) = &pipeopen("giftopnm $temp");
}
elsif ($attach->{'type'} eq 'image/jpeg') {
($pnmin, $pnmout) = &pipeopen("djpeg -fast $temp");
}
else {
&dump_erroricon();
}
close($pnmin);
$type = <$pnmout>;
$size = <$pnmout>;
unlink($temp);
$type =~ /^P[0-9]/ || &dump_erroricon();
$size =~ /(\d+)\s+(\d+)/ || &dump_erroricon();
($w, $h) = ($1, $2);
if ($w > 48) {
$scale = 48.0 / $w;
}
else {
$scale = 48.0 / $h;
}
($jpegin, $jpegout) = &pipeopen("pnmscale $scale 2>/dev/null | cjpeg");
print $jpegin $type;
print $jpegin $size;
while(read($pnmout, $buf, 1024)) {
print $jpegin $buf;
}
close($jpegin);
close($pnmout);
print "Content-type: image/jpeg\n\n";
while(read($jpegout, $buf, 1024)) {
print $buf;
}
close($jpegout);
}
else {
# Just output the attachment
print "X-no-links: 1\n";
@download = split(/\t+/, $config{'download'});
if ($in{'type'}) {
# Display as a specific MIME type
print "Content-type: $in{'type'}\n\n";
print $attach->{'data'};
}
else {
# Auto-detect type
if ($in{'save'}) {
# Force download
print "Content-Disposition: Attachment\n";
}
if ($attach->{'type'} eq 'message/delivery-status') {
print "Content-type: text/plain\n\n";
}
else {
print "Content-type: $attach->{'type'}\n\n";
}
}
if ($attach->{'type'} =~ /^text\/html/i && !$in{'save'}) {
print &safe_urls(&filter_javascript($attach->{'data'}));
}
else {
print $attach->{'data'};
}
}
&pop3_logout_all();
sub dump_erroricon
{
print "Content-type: image/gif\n\n";
open(ICON, "images/error.gif");
while(<ICON>) { print; }
close(ICON);
exit;
}
# pipeopen(command)
sub pipeopen
{
$pipe++;
local $inr = "INr$pipe";
local $inw = "INw$pipe";
local $outr = "OUTr$pipe";
local $outw = "OUTw$pipe";
pipe($inr, $inw);
pipe($outr, $outw);
if (!fork()) {
untie(*STDIN);
untie(*STDOUT);
open(STDIN, "<&$inr");
open(STDOUT, ">&$outw");
close($inw);
close($outr);
exec($_[0]);
print STDERR "exec failed : $!\n";
exit 1;
}
close($inr);
close($outw);
return ($inw, $outr);
}
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