diff options
Diffstat (limited to 'roles/MX/files/usr/local/bin')
| -rwxr-xr-x | roles/MX/files/usr/local/bin/reserved-alias.pl | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/roles/MX/files/usr/local/bin/reserved-alias.pl b/roles/MX/files/usr/local/bin/reserved-alias.pl new file mode 100755 index 0000000..e19492e --- /dev/null +++ b/roles/MX/files/usr/local/bin/reserved-alias.pl @@ -0,0 +1,111 @@ +#!/usr/bin/perl + +# Copyright © 2013 Guilhem Moulin <guilhem@fripost.org> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +use warnings; +use strict; +use Net::LDAPI; +use Net::LDAP::Util qw/escape_filter_value ldap_explode_dn escape_dn_value/; +use Authen::SASL; +use Net::SMTP; + +if (!@ARGV or grep { $_ eq '-h' or $_ eq '--help' } @ARGV) { + # Help + print STDERR "Usage: $0 {original sender} {original recipient} [additional recipient ...]\n"; + print STDERR "\n"; + print STDERR "The message read from the standard input is redirected to 'additional recipient',\n"; + print STDERR "and also forwarded to the domain owner if any. If the 'additional recipient' begins\n"; + print STDERR "with '\@', the localpart of 'original recipient' is prepended.\n"; + print STDERR "\n"; + print STDERR "This is mostly useful to comply to RFC 822 section 6.3 and RFC 2142 section\n"; + print STDERR "4 (to forward mails to 'postmaster\@' and 'abuse\@' to the site admin in\n"; + print STDERR "addition to the virtual domain manager).\n"; + exit; +} + +# The original sender +my $sender = shift; + +# The original recipient +my $orig = shift; +$orig =~ /^(.+)\@([^@]+)$/ + or warn "Warning: Non fully qualified: $orig"; +my ($local,$domain) = ($1,$2); + +# The new recipient (typically, the admin site) +my @recipients = grep { $_ and $orig ne $_ } + # add localparts to domain + map { my $x = $_; + if ($x =~ /^\@/) { + $x = (defined $local and $local ne '') ? $local.$x : undef; + } + $x + } + @ARGV; +# Die if we can't deliver to site admins +die "Error: Aborted delivery to '$orig' in attempt to break an alias expansion loop.\n" + unless @recipients; + +if (defined $domain) { + # Look for the domain owner or postmaster + my $ldap = Net::LDAPI::->new(); + $ldap->bind( undef, sasl => Authen::SASL::->new(mechanism => 'EXTERNAL') ) + or die "Error: Couldn't bind"; + + my @attrs = ( 'fripostPostmaster', 'fripostOwner' ); + my $mesg = $ldap->search( base => 'fvd='.escape_dn_value($domain).',' + .'ou=virtual,dc=fripost,dc=org' + , scope => 'base' + , deref => 'never' + , filter => '(&(objectClass=FripostVirtualDomain)' + .'(fvd='.escape_filter_value($domain).')'. + ')' + , attrs => \@attrs + ); + if ($mesg->code) { + warn "Warning: ".$mesg->error; + } + elsif ($mesg->count != 1) { + # Note: this may happen for "$mydestination", but these mails + # are unlikely. We'll get a harmless warning at worst. + warn "Warning: Something weird happened when looking up domain '".$domain. + "'. Check your ACL."; + } + else { + my $entry = $mesg->pop_entry() // die "Error: Cannot pop entry."; + foreach (@attrs) { + my $v = $entry->get_value($_, asref => 1) or next; + foreach my $dn (@$v) { + my $dn2 = ldap_explode_dn($dn, casefold => 'lower'); + my $l = $dn2->[0]->{fvl}; + my $d = $dn2->[1]->{fvd}; + if ($l ne '' and $d ne '') { + push @recipients, $l.'@'.$d; + } + else { + warn "Warning: Invalid DN: $dn" + } + } + } + } + $ldap->unbind; +} + +my $smtp = Net::SMTP::->new( 'localhost:25', Timeout => 1200 ); +$smtp->mail($sender); +$smtp->to(@recipients, { Notify => ['FAILURE','DELAY'], SkipBad => 1 }); +$smtp->data(<STDIN>); +$smtp->quit; |