2 # Copyright (C) 2013-2019 all contributors <meta@public-inbox.org>
3 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
5 # Mail delivery agent for public-inbox, run from your MTA upon mail delivery
8 my $usage = 'public-inbox-mda [OPTIONS] < rfc2822_message';
9 my $precheck = grep(/\A--no-precheck\z/, @ARGV) ? 0 : 1;
14 $emm = $ems = undef; # trigger DESTROY
19 use PublicInbox::MIME;
21 use PublicInbox::Config;
22 use PublicInbox::Emergency;
23 use PublicInbox::Filter::Base;
24 use PublicInbox::InboxWritable;
25 use PublicInbox::Spamcheck;
27 # n.b: hopefully we can setup the emergency path without bailing due to
28 # user error, we really want to setup the emergency destination ASAP
29 # in case there's bugs in our code or user error.
30 my $emergency = $ENV{PI_EMERGENCY} || "$ENV{HOME}/.public-inbox/emergency/";
31 $ems = PublicInbox::Emergency->new($emergency);
32 my $str = eval { local $/; <STDIN> };
33 $str =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;
35 my $simple = Email::Simple->new(\$str);
36 my $config = PublicInbox::Config->new;
37 my $key = 'publicinboxmda.spamcheck';
38 my $default = 'PublicInbox::Spamcheck::Spamc';
39 my $spamc = PublicInbox::Spamcheck::get($config, $key, $default);
41 my $recipient = $ENV{ORIGINAL_RECIPIENT};
42 if (defined $recipient) {
43 $dst = $config->lookup($recipient); # first check
46 my $list_id = $simple->header('List-Id');
47 if (defined $list_id && $list_id =~ /<[ \t]*(.+)?[ \t]*>/) {
48 $dst = $config->lookup_list_id($1);
50 if (!defined $dst && !defined $recipient) {
51 die "ORIGINAL_RECIPIENT not defined in ENV\n";
53 defined $dst or do_exit(67); # EX_NOUSER 5.1.1 user unknown
55 $dst->{mainrepo} or do_exit(67);
56 $dst = PublicInbox::InboxWritable->new($dst);
58 # pre-check, MDA has stricter rules than an importer might;
59 if ($precheck && !PublicInbox::MDA->precheck($simple, $dst->{address})) {
66 $spam_ok = $spamc->spamcheck($ems->fh, \$str);
67 # update the emergency dump with the new message:
68 $emm = PublicInbox::Emergency->new($emergency);
71 } else { # no spam checking configured:
75 read($fh, $str, -s $fh);
78 my $mime = PublicInbox::MIME->new(\$str);
79 do_exit(0) unless $spam_ok;
81 my $fcfg = $dst->{filter} || '';
82 # -mda defaults to the strict base filter
84 $dst->{filter} = 'PublicInbox::Filter::Base';
85 } elsif ($fcfg eq 'scrub') { # legacy alias, undocumented, remove?
86 $dst->{filter} = 'PublicInbox::Filter::Mirror';
88 my $filter = $dst->filter;
89 my $ret = $filter->delivery($mime);
90 if (ref($ret) && $ret->isa('Email::MIME')) { # filter altered message
92 } elsif ($ret == PublicInbox::Filter::Base::IGNORE) {
93 do_exit(0); # chuck it to emergency
94 } elsif ($ret == PublicInbox::Filter::Base::REJECT) {
95 $! = 65; # EX_DATAERR 5.6.0 data format error
96 die $filter->err, "\n";
100 PublicInbox::MDA->set_list_headers($mime, $dst);
101 my $im = $dst->importer(0);
102 if (defined $im->add($mime)) {
105 # this message is similar to what ssoma-mda shows:
106 print STDERR "CONFLICT: Message-ID: ",
107 $mime->header_obj->header_raw('Message-ID'),