#!/usr/bin/perl -w
-# Copyright (C) 2013-2015 all contributors <meta@public-inbox.org>
-# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+# Copyright (C) 2013-2021 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
+my $help = <<EOF;
+usage: public-inbox-mda [OPTIONS] </path/to/RFC2822_message
+
+options:
+
+ --no-precheck skip internal checks for spam messages
+
+See public-inbox-mda(1) man page for full documentation.
+EOF
use strict;
-use warnings;
-my $usage = 'public-inbox-mda < rfc2822_message';
-my ($ems, $emm);
+use Getopt::Long qw(:config gnu_getopt no_ignore_case auto_abbrev);
+my ($ems, $emm, $show_help);
+my $precheck = 1;
+GetOptions('precheck!' => \$precheck, 'help|h' => \$show_help) or
+ do { print STDERR $help; exit 1 };
-sub do_exit {
+my $do_exit = sub {
my ($code) = shift;
$emm = $ems = undef; # trigger DESTROY
exit $code;
-}
+};
-use Email::Simple;
-use Email::MIME;
-use Email::MIME::ContentType;
-$Email::MIME::ContentType::STRICT_PARAMS = 0; # user input is imperfect
+use PublicInbox::Eml;
use PublicInbox::MDA;
use PublicInbox::Config;
-use PublicInbox::Import;
-use PublicInbox::Git;
use PublicInbox::Emergency;
use PublicInbox::Filter::Base;
-use PublicInbox::Spamcheck::Spamc;
+use PublicInbox::InboxWritable;
+use PublicInbox::Spamcheck;
# 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> };
+my $str = do { 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 $eml = PublicInbox::Eml->new(\$str);
+my $cfg = PublicInbox::Config->new;
+my $key = 'publicinboxmda.spamcheck';
+my $default = 'PublicInbox::Spamcheck::Spamc';
+my $spamc = PublicInbox::Spamcheck::get($cfg, $key, $default);
+my $dests = [];
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);
+if (defined $recipient) {
+ my $ibx = $cfg->lookup($recipient); # first check
+ push @$dests, $ibx if $ibx;
+}
+if (!scalar(@$dests)) {
+ $dests = PublicInbox::MDA->inboxes_for_list_id($cfg, $eml);
+ if (!scalar(@$dests) && !defined($recipient)) {
+ die "ORIGINAL_RECIPIENT not defined in ENV\n";
+ }
+ scalar(@$dests) or $do_exit->(67); # EX_NOUSER 5.1.1 user unknown
+}
+
+my $err;
+@$dests = grep {
+ my $ibx = PublicInbox::InboxWritable->new($_);
+ eval { $ibx->assert_usable_dir };
+ if ($@) {
+ warn $@;
+ $err = 1;
+ 0;
+ # pre-check, MDA has stricter rules than an importer might;
+ } elsif ($precheck) {
+ !!PublicInbox::MDA->precheck($eml, $ibx->{address});
+ } else {
+ 1;
+ }
+} @$dests;
+
+$do_exit->(67) if $err && scalar(@$dests) == 0;
-# 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 $spam_ok;
+$eml = undef;
+my $spam_ok;
+if ($spamc) {
+ $str = '';
+ $spam_ok = $spamc->spamcheck($ems->fh, \$str);
+ # update the emergency dump with the new message:
+ $emm = PublicInbox::Emergency->new($emergency);
+ $emm->prepare(\$str);
+ $ems = $ems->abort;
+} else { # no spam checking configured:
+ $spam_ok = 1;
+ $emm = $ems;
+ my $fh = $emm->fh;
+ read($fh, $str, -s $fh);
+}
+$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 {
- $filter = PublicInbox::Filter::Base->new;
+# -mda defaults to the strict base filter which we won't use anywhere else
+sub mda_filter_adjust ($) {
+ my ($ibx) = @_;
+ my $fcfg = $ibx->{filter} || '';
+ if ($fcfg eq '') {
+ $ibx->{filter} = 'PublicInbox::Filter::Base';
+ } elsif ($fcfg eq 'scrub') { # legacy alias, undocumented, remove?
+ $ibx->{filter} = 'PublicInbox::Filter::Mirror';
+ }
}
-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
+my @rejects;
+for my $ibx (@$dests) {
+ mda_filter_adjust($ibx);
+ my $filter = $ibx->filter;
+ my $mime = PublicInbox::Eml->new($str);
+ my $ret = $filter->delivery($mime);
+ if (ref($ret) && ($ret->isa('PublicInbox::Eml') ||
+ $ret->isa('Email::MIME'))) { # filter altered message
+ $mime = $ret;
+ } elsif ($ret == PublicInbox::Filter::Base::IGNORE) {
+ next; # nothing, keep looping
+ } elsif ($ret == PublicInbox::Filter::Base::REJECT) {
+ push @rejects, $filter->err;
+ next;
+ }
+
+ PublicInbox::MDA->set_list_headers($mime, $ibx);
+ my $im = $ibx->importer(0);
+ if (defined $im->add($mime)) {
+ # ->abort is idempotent, no emergency if a single
+ # destination succeeds
+ $emm->abort;
+ } else { # v1-only
+ my $mid = $mime->header_raw('Message-ID');
+ # this message is similar to what ssoma-mda shows:
+ print STDERR "CONFLICT: Message-ID: $mid exists\n";
+ }
+ $im->done;
+}
-PublicInbox::MDA->set_list_headers($mime, $dst);
-my $git = PublicInbox::Git->new($main_repo);
-my $im = PublicInbox::Import->new($git, $dst->{name}, $recipient);
-if (defined $im->add($mime)) {
- $emm = $emm->abort;
-} else {
- # this message is similar to what ssoma-mda shows:
- print STDERR "CONFLICT: Message-ID: ",
- $mime->header_obj->header_raw('Message-ID'),
- " exists\n";
+if (scalar(@rejects) && scalar(@rejects) == scalar(@$dests)) {
+ $! = 65; # EX_DATAERR 5.6.0 data format error
+ die join("\n", @rejects, '');
}
-$im->done;
-do_exit(0);
+$do_exit->(0);