]> Sergey Matveev's repositories - public-inbox.git/blob - public-inbox-mda
reject messages if ORIGINAL_RECIPIENT is not specified
[public-inbox.git] / public-inbox-mda
1 #!/usr/bin/perl -w
2 # Copyright (C) 2013, Eric Wong <normalperson@yhbt.net> and all contributors
3 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
4 use strict;
5 use warnings;
6 use Email::Filter;
7 use Email::Address;
8 use PublicInbox::Filter;
9 use IPC::Run qw(run);
10 my $usage = "public-inbox-mda main_repo fail_repo < rfc2822_message";
11 my $filter = Email::Filter->new(emergency => "~/emergency.mbox");
12 my $main_repo = shift @ARGV or die "Usage: $usage\n";
13 my $fail_repo = shift @ARGV or die "Usage: $usage\n";
14 my $max = 1024 * 500; # same as spamc
15
16 my $filtered;
17 if (length($filter->simple->as_string) <= $max
18     && PublicInbox->recipient_specified($filter)
19     && do_spamc($filter->simple, \$filtered)) {
20         # update our message with SA headers (in case our filter rejects it)
21         my $simple = Email::Simple->new($filtered);
22         $filtered = undef;
23         $filter->simple($simple);
24
25         if (PublicInbox::Filter->run($simple)) {
26                 # run spamc again on the HTML-free message
27                 if (do_spamc($simple, \$filtered)) {
28                         $filter->simple(Email::Simple->new($filtered));
29                         $filter->pipe("ssoma-mda", $main_repo);
30                 } else {
31                         $filter->pipe("ssoma-mda", $fail_repo);
32                 }
33         } else {
34                 # PublicInbox::Filter nuked everything, oops :x
35                 $filter->pipe("ssoma-mda", $fail_repo);
36         }
37 } else {
38         # if SA thinks it's spam or there's an error:
39         # don't bother with our own filtering
40         $filter->pipe("ssoma-mda", $fail_repo);
41 }
42 die "Email::Filter failed to exit\n";
43
44 # we depend on "report_safe 0" in /etc/spamassassin/*.cf with --headers
45 # not using Email::Filter->pipe here since we want the stdout of
46 # the command even on failure (spamc will set $? on error).
47 sub do_spamc {
48         my ($simple, $out) = @_;
49         eval {
50                 my $orig = $simple->as_string;
51                 run([qw/spamc -E --headers/], \$orig, $out);
52         };
53
54         return ($@ || $? || !defined($$out) || length($$out) == 0) ? 0 : 1;
55 }