# Copyright (C) 2013-2015 all contributors <meta@public-inbox.org>
# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+#
+# For the -mda script (mail delivery agent)
package PublicInbox::MDA;
use strict;
use warnings;
+use Email::Simple;
use Email::Address;
use Date::Parse qw(strptime);
use constant MAX_SIZE => 1024 * 500; # same as spamc default, should be tunable
+use constant MAX_MID_SIZE => 244; # max term size - 1 in Xapian
use constant cmd => qw/ssoma-mda -1/;
# drop plus addressing for matching
# do not allow Bcc, only Cc and To if recipient is set
sub precheck {
my ($klass, $filter, $address) = @_;
- my $simple = $filter->simple;
+ my Email::Simple $simple = $filter->simple;
my $mid = $simple->header("Message-ID");
+ return 0 if (length($mid) > MAX_MID_SIZE);
return 0 unless usable_str(length('<m@h>'), $mid) && $mid =~ /\@/;
return 0 unless usable_str(length('u@h'), $filter->from);
return 0 unless usable_str(length(':o'), $simple->header("Subject"));