1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
| | #!/usr/bin/perl -w
# Copyright (C) 2013-2018 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# Mail delivery agent for public-inbox, run from your MTA upon mail delivery
use strict;
use warnings;
my $usage = 'public-inbox-mda < rfc2822_message';
my ($ems, $emm);
sub do_exit {
my ($code) = shift;
$emm = $ems = undef; # trigger DESTROY
exit $code;
}
use Email::Simple;
use PublicInbox::MIME;
use PublicInbox::MDA;
use PublicInbox::Config;
use PublicInbox::Import;
use PublicInbox::Git;
use PublicInbox::Emergency;
use PublicInbox::Filter::Base;
use PublicInbox::Spamcheck::Spamc;
# n.b: hopefully we can setup the emergency path without bailing due to
# user error, we really want to setup the emergency destination ASAP
# in case there's bugs in our code or user error.
my $emergency = $ENV{PI_EMERGENCY} || "$ENV{HOME}/.public-inbox/emergency/";
$ems = PublicInbox::Emergency->new($emergency);
my $str = eval { local $/; <STDIN> };
$str =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;
$ems->prepare(\$str);
my $simple = Email::Simple->new(\$str);
my $config = PublicInbox::Config->new;
my $recipient = $ENV{ORIGINAL_RECIPIENT};
defined $recipient or die "ORIGINAL_RECIPIENT not defined in ENV\n";
my $dst = $config->lookup($recipient); # first check
defined $dst or do_exit(1);
my $main_repo = $dst->{mainrepo} or do_exit(1);
# pre-check, MDA has stricter rules than an importer might;
do_exit(0) unless PublicInbox::MDA->precheck($simple, $dst->{address});
my $spamc = PublicInbox::Spamcheck::Spamc->new;
$str = '';
my $spam_ok = $spamc->spamcheck($ems->fh, \$str);
$simple = undef;
$emm = PublicInbox::Emergency->new($emergency);
$emm->prepare(\$str);
$ems = $ems->abort;
my $mime = PublicInbox::MIME->new(\$str);
$str = '';
do_exit(0) unless $spam_ok;
my $fcfg = $dst->{filter} || '';
my $filter;
if ($fcfg =~ /::/) {
eval "require $fcfg";
die $@ if $@;
$filter = $fcfg->new;
} elsif ($fcfg eq 'scrub') { # TODO:
require PublicInbox::Filter::Mirror;
$filter = PublicInbox::Filter::Mirror->new;
} else {
$filter = PublicInbox::Filter::Base->new;
}
my $ret = $filter->delivery($mime);
if (ref($ret) && $ret->isa('Email::MIME')) { # filter altered message
$mime = $ret;
} elsif ($ret == PublicInbox::Filter::Base::IGNORE) {
do_exit(0); # chuck it to emergency
} elsif ($ret == PublicInbox::Filter::Base::REJECT) {
$! = $ret;
die $filter->err, "\n";
} # else { accept
PublicInbox::MDA->set_list_headers($mime, $dst);
my $v = $dst->{version} || 1;
my $im;
if ($v == 2) {
require PublicInbox::V2Writable;
$im = PublicInbox::V2Writable->new($dst);
$im->{parallel} = 0; # pointless to be parallel for a single message
} elsif ($v == 1) {
my $git = $dst->git;
$im = PublicInbox::Import->new($git, $dst->{name}, $recipient, $dst);
} else {
die "Unsupported inbox version: $v\n";
}
if (defined $im->add($mime)) {
$emm = $emm->abort;
} else {
# this message is similar to what ssoma-mda shows:
print STDERR "CONFLICT: Message-ID: ",
$mime->header_obj->header_raw('Message-ID'),
" exists\n";
}
$im->done;
do_exit(0);
|