6 use POSIX
qw(errno_h signal_h);
8 use Net
::Server
::PreForkSimple
;
9 use Net
::DNS
::Resolver
;
14 use Time
::HiRes
qw(gettimeofday);
18 use PVE
::Tools
qw($IPV4RE $IPV6RE);
26 use PMG
::ClusterConfig
;
28 use base
qw(Net::Server::PreForkSimple);
30 my $greylist_delay = 3*60; # greylist window
31 my $greylist_lifetime = 3600*24*2; # retry window
32 my $greylist_awlifetime = 3600*24*36; # expire window
34 my $opt_commandline = [$0, @ARGV];
36 my $opt_max_dequeue = 1;
37 my $opt_dequeue_time = 60*2;
42 my $opt_policy_port = 10022;
45 'pidfile=s' => \
$opt_pidfile,
46 'testmode' => \
$opt_testmode,
47 'database=s' => \
$opt_database,
48 'port=i' => \
$opt_policy_port,
50 if (!GetOptions
(%_opts)) {
55 $opt_pidfile = "/run/pmgpolicy.pid" if !$opt_pidfile;
56 $opt_max_dequeue = 0 if $opt_testmode;
58 initlog
('pmgpolicy', 'mail');
64 my $pmg_cfg = PMG
::Config-
>new ();
65 my $demo = $pmg_cfg->get('admin', 'demo');
66 $max_servers = $pmg_cfg->get('mail', 'max_policy');
69 syslog
('info', 'demo mode detected - not starting server');
75 if (defined ($ENV{BOUND_SOCKETS
})) {
81 port
=> [ $opt_policy_port ],
83 max_servers
=> $max_servers,
84 max_dequeue
=> $opt_max_dequeue,
85 check_for_dequeue
=> $opt_dequeue_time,
87 pid_file
=> $opt_pidfile,
88 commandline
=> $opt_commandline,
89 no_close_by_child
=> 1,
94 if (defined($opt_database)) {
95 $database = $opt_database;
97 $database = "Proxmox_ruledb";
100 $SIG{'__WARN__'} = sub {
104 syslog
('warning', "WARNING: %s", $t);
108 sub update_rbl_stats
{
109 my ($dbh, $lcid) = @_;
111 my ($rbl_count, $pregreet_count) = PMG
::Utils
::scan_journal_for_rbl_rejects
();
112 return if !$rbl_count && !$pregreet_count;
114 my $timezone = tz_local_offset
();;
115 my $hour = int((time() + $timezone)/3600) * 3600;
117 my $sth = $dbh->prepare(
118 'INSERT INTO LocalStat (Time, RBLCount, PregreetCount, CID, MTime) ' .
119 'VALUES (?, ?, ?, ?, EXTRACT(EPOCH FROM now())) ' .
120 'ON CONFLICT (Time, CID) DO UPDATE SET ' .
121 'RBLCount = LocalStat.RBLCount + excluded.RBLCount, ' .
122 'PregreetCount = LocalStat.PregreetCount + excluded.PregreetCount, ' .
123 'MTime = excluded.MTime');
125 $sth->execute($hour, $rbl_count, $pregreet_count, $lcid);
132 $self->log(2, "starting policy database maintenance (greylist, rbl)");
134 my $cinfo = PMG
::ClusterConfig-
>new();
135 my $lcid = $cinfo->{local}->{cid
};
136 my $role = $cinfo->{local}->{type
} // '-';
141 $dbh = PMG
::DBTools
::open_ruledb
($database);
146 $self->log(0, "ERROR: $err");
150 my ($csec, $usec) = gettimeofday
();
152 eval { update_rbl_stats
($dbh, $lcid); };
155 my ($csec_end, $usec_end) = gettimeofday
();
156 my $rbltime = int (($csec_end-$csec)*1000 + ($usec_end - $usec)/1000);
157 ($csec, $usec) = ($csec_end, $usec_end);
160 $self->log(0, "rbl update error: $err");
172 # we do not lock the table here to avoid delays
173 # but that is OK, because we only touch expired records
174 # which do not change nornmally
175 ## $dbh->do ("LOCK TABLE CGreylist IN ROW EXCLUSIVE MODE");
177 # move expired and undelivered records from Greylist to Statistic
181 $rntxt = "AND CID = 0";
183 if ($role eq 'master') {
184 # master is responsible for all non-cluster (deleted) nodes
185 foreach my $rcid (@{$cinfo->{remnodes
}}) {
186 $rntxt .= $rntxt ?
" AND CID != $rcid" : "AND (CID != $rcid";
188 $rntxt .= ")" if $rntxt;
190 $rntxt = "AND (CID = 0 OR CID = $lcid)";
197 my $sth = $dbh->prepare(
198 "SELECT distinct instance, sender FROM CGreylist " .
199 "WHERE passed = 0 AND extime < ? $rntxt");
201 $sth->execute ($now);
204 while (my $ref = $sth->fetchrow_hashref()) {
205 my $sth2 = $dbh->prepare(
206 "SELECT * FROM CGreylist WHERE instance = ? AND sender = ?");
207 $sth2->execute ($ref->{instance
}, $ref->{sender
});
212 while (my $ref2 = $sth2->fetchrow_hashref()) {
213 $rctime = $ref2->{rctime
} if !$rctime;
214 $bc += $ref2->{blocked
};
215 push @rcvrs, $ref2->{receiver
};
220 # hack: sometimes query sth2 does not return anything - maybe a
221 # postgres bug? We simply ignore (when rctime is undefined) it
225 $cmds .= "SELECT nextval ('cstatistic_id_seq');" .
226 "INSERT INTO CStatistic " .
227 "(CID, RID, ID, Time, Bytes, Direction, Spamlevel, VirusInfo, PTime, Sender) VALUES (" .
228 "$lcid, currval ('cstatistic_id_seq'), currval ('cstatistic_id_seq'), ";
230 my $sl = $bc >= 100000 ?
4 : 5;
231 $cmds .= $rctime . ", 0, '1', $sl, NULL, 0, ";
232 $cmds .= $dbh->quote ($ref->{sender
}) . ');';
234 foreach my $r (@rcvrs) {
235 my $tmp = $dbh->quote ($r);
236 $cmds .= "INSERT INTO CReceivers (CStatistic_CID, CStatistic_RID, Receiver, Blocked) ".
237 "VALUES ($lcid, currval ('cstatistic_id_seq'), $tmp, '1'); ";
241 if (length ($cmds) > 100000) {
248 # this produces too much log traffic
249 # my $targets = join (", ", @rcvrs);
250 #my $msg = "expire mail $ref->{instance} from $ref->{sender} to $targets";
251 #$self->log (0, $msg);
254 $dbh->do ($cmds) if $cmds;
259 my $msg = "found $ecount expired mails in greylisting database";
260 $self->log (0, $msg);
263 $dbh->do ("DELETE FROM CGreylist WHERE extime < $now");
269 ($csec_end, $usec_end) = gettimeofday
();
270 my $ptime = int (($csec_end-$csec)*1000 + ($usec_end - $usec)/1000);
273 $dbh->rollback if $dbh;
274 $self->log(0, "greylist database update error: $err");
277 $self->log(2, "end policy database maintenance ($rbltime ms, $ptime ms)");
279 $dbh->disconnect() if $dbh;
285 my $prop = $self->{server
};
287 $prop->{log_level
} = 3;
289 $self->log(0, "Policy daemon (re)started");
292 # reloading server configuration
293 if (defined $prop->{children
}) {
294 foreach my $pid (keys %{$prop->{children
}}) {
295 kill(10, $pid); # SIGUSR1 children
300 my $sig_set = POSIX
::SigSet-
>new;
301 $sig_set->addset (&POSIX
::SIGHUP
);
302 $sig_set->addset (&POSIX
::SIGCHLD
);
303 my $old_sig_set = POSIX
::SigSet-
>new();
305 sigprocmask
(SIG_UNBLOCK
, $sig_set, $old_sig_set);
311 my $prop = $self->{server
};
313 if ($self->{ruledb
}) {
314 $self->log(0, "reloading configuration $database");
315 $self->{ruledb
}->close();
318 my $pmg_cfg = PMG
::Config-
>new ();
319 $self->{use_spf
} = $pmg_cfg->get('mail', 'spf');
320 $self->{use_greylist
} = $pmg_cfg->get('mail', 'greylist');
321 $self->{use_greylist6
} = $pmg_cfg->get('mail', 'greylist6');
322 $self->{greylistmask4
} = $pmg_cfg->get('mail', 'greylistmask4');
323 $self->{greylistmask6
} = $pmg_cfg->get('mail', 'greylistmask6');
326 $self->{use_spf
} = 1;
327 $self->{use_greylist
} = 1;
328 $self->{use_greylist6
} = 1;
331 my $nodename = PVE
::INotify
::nodename
();
332 $self->{fqdn
} = PVE
::Tools
::get_fqdn
($nodename);
334 my $cinfo = PMG
::ClusterConfig-
>new();
335 my $lcid = $cinfo->{local}->{cid
};
336 $self->{cinfo
} = $cinfo;
337 $self->{lcid
} = $lcid;
342 $dbh = PMG
::DBTools
::open_ruledb
($database);
343 $self->{ruledb
} = PMG
::RuleDB-
>new($dbh);
344 $self->{rulecache
} = PMG
::RuleCache-
>new($self->{ruledb
});
347 $self->log(0, "ERROR: unable to load database : $err");
350 $self->{reload_config
} = 0;
353 sub child_init_hook
{
356 my $prop = $self->{server
};
358 $0 = 'pmgpolicy child';
360 setup_fork_signal_mask
(0); # unblocking signals for children
363 $self->load_config();
365 $self->{mux
} = IO
::Multiplex-
>new();
366 $self->{mux
}->set_callback_object($self);
378 # $dnsargs{nameservers} = [ qw (213.129.232.1 213.129.226.2) ];
381 $self->{dns_resolver
} = Net
::DNS
::Resolver-
>new(%dnsargs);
383 $self->{spf_server
} = Mail
::SPF
::Server-
>new(
384 hostname
=> $self->{fqdn
}, dns_resolver
=> $self->{dns_resolver
},
385 default_authority_explanation
=> 'Rejected by SPF: %{C} is not a designated mailserver for %{S} (context %{_scope}, on %{R})');
389 $self->child_finish_hook;
394 $self->{reload_config
} = 1;
398 sub child_finish_hook
{
401 my $prop = $self->{server
};
403 $self->{ruledb
}->close() if $self->{ruledb
};
407 my ($self, $instance, $ip, $helo, $sender) = @_;
414 # we only use helo tests when we have no sender,
415 # helo is sometimes empty, so we can't use SPF helo tests
416 # in that case - strange
417 if ($helo && !$sender) {
420 if (defined ($self->{cache
}->{$instance}) &&
421 defined ($self->{cache
}->{$instance}->{spf_helo_result
})) {
423 $query = $self->{cache
}->{$instance}->{spf_helo_result
};
426 my $request = Mail
::SPF
::Request-
>new(
427 scope
=> 'helo', identity
=> $helo, ip_address
=> $ip);
429 $query = $self->{cache
}->{$instance}->{spf_helo_result
} =
430 $self->{spf_server
}->process ($request);
433 $result = $query->code;
434 $spf_header = $query->received_spf_header;
435 $local_expl = $query->local_explanation;
436 $auth_expl = $query->authority_explanation if $query->is_code('fail');
438 # return if we get a definitive result
439 if ($result eq 'pass' || $result eq 'fail' || $result eq 'temperror') {
440 return ($result, $spf_header, $local_expl, $auth_expl);
448 if (defined ($self->{cache
}->{$instance}) &&
449 defined ($self->{cache
}->{$instance}->{spf_mfrom_result
})) {
451 $query = $self->{cache
}->{$instance}->{spf_mfrom_result
};
455 my $request = Mail
::SPF
::Request-
>new(
456 scope
=> 'mfrom', identity
=> $sender,
457 ip_address
=> $ip, helo_identity
=> $helo);
459 $query = $self->{cache
}->{$instance}->{spf_mfrom_result
} =
460 $self->{spf_server
}->process($request);
463 $result = $query->code;
464 $spf_header = $query->received_spf_header;
465 $local_expl = $query->local_explanation;
466 $auth_expl = $query->authority_explanation if $query->is_code('fail');
468 return ($result, $spf_header, $local_expl, $auth_expl);
475 my ($self, $ip, $receiver) = @_;
477 my ($rdomain) = $receiver =~ /([^@]+)$/;
479 my $dkey = "BKMX:$rdomain";
481 if (defined ($self->{cache
}->{$dkey}) &&
482 ($self->{cache
}->{$dkey}->{status
} == 1)) {
483 return $self->{cache
}->{$dkey}->{$ip};
486 my $resolver = $self->{dns_resolver
};
488 if (my $mx = $resolver->send($rdomain, 'MX')) {
489 $self->{cache
}->{$dkey}->{status
} = 1;
490 my @mxa = grep { $_->type eq 'MX' } $mx->answer;
491 my @mxl = sort { $a->preference <=> $b->preference } @mxa;
492 # shift @mxl; # optionally skip primary MX ?
493 foreach my $rr (@mxl) {
494 my $a = $resolver->send ($rr->exchange, 'A');
496 foreach my $rra ($a->answer) {
497 if ($rra->type eq 'A') {
498 $self->{cache
}->{$dkey}->{$rra->address} = 1;
504 $self->{cache
}->{$dkey}->{status
} = 0;
507 return $self->{cache
}->{$dkey}->{$ip};
511 my ($self, $ctime, $helo, $ip, $sender, $rcpt, $instance) = @_;
513 my $rulecache = $self->{rulecache
};
515 my $dbh = $self->{ruledb
}->{dbh
};
517 # try to reconnect if database connection is broken
519 $self->log(0, 'Database connection broken - trying to reconnect');
522 $dbh = PMG
::DBTools
::open_ruledb
($database);
526 $self->log(0, "unable to reconnect to database server: $err");
529 $self->{ruledb
} = PMG
::RuleDB-
>new($dbh);
532 # some sender substitutions
533 my ($user, $domain) = split('@', $sender, 2);
534 if (defined ($user) && defined ($domain)) {
535 # see http://cr.yp.to/proto/verp.txt
536 $user =~ s/\+.*//; # strip extensions (mailing-list VERP)
537 $user =~ s/\b\d+\b/#/g; #replace numbers in VERP address
538 $sender = "$user\@$domain";
541 if ($self->is_backup_mx($ip, $rcpt)) {
542 $self->log(3, "accept mails from backup MX host - $ip");
546 # greylist exclusion (sender whitelist)
547 if ($rulecache->greylist_match ($sender, $ip)) {
548 $self->log(3, "accept mails from whitelist - $ip");
552 # greylist exclusion (receiver whitelist)
553 if ($rulecache->greylist_match_receiver ($rcpt)) {
554 $self->log(3, "accept mails to whitelist - <$rcpt>");
560 if ($ip =~ m/$IPV4RE/) {
561 $masklen = $self->{greylistmask4
};
562 $do_greylist = $self->{use_greylist
};
563 } elsif ($ip =~ m/$IPV6RE/) {
564 $masklen = $self->{greylistmask6
};
565 $do_greylist = $self->{use_greylist6
};
572 if ((!$opt_testmode && $self->{use_spf
}) ||
573 ($opt_testmode && ($rcpt =~ m/^testspf/))) {
582 my ($result, $smtp_comment, $header_comment);
585 $previous_alarm = alarm(10);
586 local $SIG{ALRM
} = sub { die "SPF timeout\n" };
588 ($result, $spf_header, $local_expl, $auth_expl) =
589 $self->get_spf_result($instance, $ip, $helo, $sender);
591 alarm(0); # avoid race condition
595 alarm($previous_alarm) if defined($previous_alarm);
598 $err = $err->text if UNIVERSAL
::isa
($err, 'Mail::SPF::Exception');
599 $self->log (0, $err);
602 if ($result && $result eq 'pass') {
603 $self->log(3, "SPF says $result");
604 $spf_result = $spf_header ?
"prepend $spf_header" : 'dunno';
607 if ($result && $result eq 'fail') {
608 $self->log(3, "SPF says $result");
609 $spf_result = "reject ${auth_expl}";
615 # try to avoid locks everywhere - we use merge instead of insert
616 #$dbh->do ("LOCK TABLE CGreylist IN ROW EXCLUSIVE MODE");
618 # check if there is already a record in the GL database
619 my $sth = $dbh->prepare(
620 "SELECT * FROM CGreylist " .
621 "WHERE IPNet::cidr = network(set_masklen(?, ?)) AND ".
622 "Sender = ? AND Receiver = ?");
624 $sth->execute($ip, $masklen, $sender, $rcpt);
625 my $ref = $sth->fetchrow_hashref();
628 # else add an entry to the GL Database with short
629 # expiration time. run_dequeue() moves those entries into the statistic
630 # table later. We set 'blocked' to 100000 to identify those entries.
632 if (!defined($ref->{rctime
})) {
634 # FIXME: drop Host column with PMG 7.0
635 $dbh->do(PMG
::DBTools
::cgreylist_merge_sql
(1), undef,
636 $ip, $masklen, 0, $sender, $rcpt, $instance,
637 $ctime, $ctime + 10, 0, 100000, 0, $ctime, $self->{lcid
});
649 return $spf_result if $spf_result;
655 # add spf_header once - SA can re-use this information
656 if (!defined($self->{cache
}->{$instance}) ||
657 !$self->{cache
}->{$instance}->{spf_header_added
}) {
658 $res = "prepend $spf_header" if $spf_header;
659 $self->{cache
}->{$instance}->{spf_header_added
} = 1;
662 return $res if !$do_greylist;
664 my $defer_res = "defer_if_permit Service is unavailable (try later)";
668 # we don't use alarm here, because it does not work with DBI
672 # try to avoid locks everywhere - we use merge instead of insert
673 #$dbh->do ("LOCK TABLE CGreylist IN ROW EXCLUSIVE MODE");
675 my $sth = $dbh->prepare(
676 "SELECT * FROM CGreylist " .
677 "WHERE IPNet::cidr = network(set_masklen(?, ?)) AND ".
678 "Sender = ? AND Receiver = ?");
680 $sth->execute($ip, $masklen, $sender, $rcpt);
682 my $ref = $sth->fetchrow_hashref();
686 if (!defined($ref->{rctime
})) {
689 PMG
::DBTools
::cgreylist_merge_sql
(1), undef, $ip, $masklen,
690 0, $sender, $rcpt, $instance, $ctime, $ctime + $greylist_lifetime,
691 0, 1, 0, $ctime, $self->{lcid
}
695 $self->log(3, "defer greylisted mail");
697 my $age = $ctime - $ref->{rctime
};
699 if ($age < $greylist_delay) {
700 # defer (resent within greylist_delay window)
702 $self->log(3, "defer greylisted mail");
704 "UPDATE CGreylist " .
705 "SET Blocked = Blocked + 1, MTime = ? " .
706 "WHERE IPNet::cidr = network(set_masklen(?, ?)) ".
707 " AND Sender = ? AND Receiver = ?", undef,
708 $ctime, $ip, $masklen, $sender, $rcpt
711 if ($ctime < $ref->{extime
}) {
712 # accept (not expired)
713 my $lifetime = $sender eq "" ?
0 : $greylist_awlifetime;
714 my $delay = $ref->{passed
} ?
"" : "Delay = $age, ";
716 "UPDATE CGreylist " .
717 "SET Passed = Passed + 1, $delay ExTime = ?, MTime = ? " .
718 "WHERE IPNet::cidr = network(set_masklen(?, ?)) ".
719 " AND Sender = ? AND Receiver = ?", undef,
720 $ctime + $lifetime, $ctime, $ip, $masklen, $sender, $rcpt
723 # defer (record is expired)
726 "UPDATE CGreylist " .
727 "SET RCTime = ?, ExTime = ?, MTime = ?, Instance = ?, " .
728 "Blocked = 1, Passed = 0 " .
729 "WHERE IPNet::cidr = network(set_masklen(?, ?)) ".
730 " AND Sender = ? AND Receiver = ?", undef,
731 $ctime, $ctime + $greylist_lifetime, $ctime, $instance,
732 $ip, $masklen, $sender, $rcpt
742 $self->log (0, $err);
748 # shutdown connections: we need this - else file handles are
749 # not closed and we run out of handles
751 my ($self, $mux, $fh) = @_;
753 $mux->shutdown($fh, 1);
757 my $last_reload_test = 0;
758 my $last_confid_version;
759 my (undef, $pmgconffilename) = PVE
::INotify
::ccache_info
('pmg.conf');
760 sub test_config_version
{
764 if (($ctime - $last_reload_test) < 5) { return 0; }
766 $last_reload_test = $ctime;
768 my $version = PVE
::INotify
::poll_changes
($pmgconffilename);
770 if (!defined($last_confid_version) ||
771 $last_confid_version != $version) {
772 $last_confid_version = $version;
780 my ($self, $mux, $fh, $dataref) = @_;
781 my $prop = $self->{server
};
786 $self->{reload_config
} = 1 if test_config_version
();
787 $self->load_config() if $self->{reload_config
};
789 while ($$dataref =~ s/^([^\r\n]*)\r?\n//) {
791 next if !defined ($line);
793 if ($line =~ m/([^=]+)=(.*)/) {
794 $attribute->{substr($1, 0, 255)} = substr($2, 0, 255);
795 } elsif ($line eq '') {
800 die "undefined test time :ERROR" if !defined $attribute->{testtime
};
801 $ctime = $attribute->{testtime
};
804 if ($attribute->{instance
} && $attribute->{recipient
} &&
805 $attribute->{client_address
} && $attribute->{request
} &&
806 $attribute->{request
} eq 'smtpd_access_policy') {
810 $res = $self->greylist_value(
812 lc ($attribute->{helo_name
}),
813 lc ($attribute->{client_address
}),
814 lc ($attribute->{sender
}),
815 lc ($attribute->{recipient
}),
816 lc ($attribute->{instance
}));
823 print $fh "action=$res\n\n";
827 $self->log(0, "greylist policy protocol error - got '%s'", $line);
833 # remove remaining data, if any
834 if ($$dataref ne '') {
835 $self->log(0, "greylist policy protocol error - unused data '%s'", $$dataref);
839 $self->log(0, $err) if $err;
842 sub restart_close_hook
{
845 my $sig_set = POSIX
::SigSet-
>new;
846 $sig_set->addset(&POSIX
::SIGHUP
);
847 $sig_set->addset(&POSIX
::SIGCHLD
); # to avoid zombies
848 my $old_sig_set = POSIX
::SigSet-
>new();
850 sigprocmask
(SIG_BLOCK
, $sig_set, $old_sig_set);
853 sub pre_server_close_hook
{
856 my $prop = $self->{server
};
858 if (defined $prop->{_HUP
}) {
859 undef $prop->{pid_file_unlink
};
862 if (defined $prop->{children
}) {
863 foreach my $pid (keys %{$prop->{children
}}) {
864 kill(1, $pid); # HUP children
868 # nicely shutdown children (give them max 30 seconds to shut down)
869 my $previous_alarm = alarm(30);
871 local $SIG{ALRM
} = sub { die "Timed Out!\n" };
874 1 while ((($pid = waitpid(-1, 0)) > 0) || ($! == EINTR
));
876 alarm(0); # avoid race
878 alarm ($previous_alarm);
881 sub setup_fork_signal_mask
{
884 my $sig_set = POSIX
::SigSet-
>new;
885 $sig_set->addset(&POSIX
::SIGINT
);
886 $sig_set->addset(&POSIX
::SIGTERM
);
887 $sig_set->addset(&POSIX
::SIGQUIT
);
888 $sig_set->addset(&POSIX
::SIGHUP
);
889 my $old_sig_set = POSIX
::SigSet-
>new();
892 sigprocmask
(SIG_BLOCK
, $sig_set, $old_sig_set);
894 sigprocmask
(SIG_UNBLOCK
, $sig_set, $old_sig_set);
898 # subroutine to start up a specified number of children.
899 # We need to block signals until handlers are set up correctly.
900 # Else its possible that HUP occurs after fork, which triggers
901 # signal TERM at children and calls server_close() instead of
902 # simply exit the child.
903 # Note: on server startup signals are setup to trigger
904 # asynchronously for a short period of time (in PreForkSimple]::loop,
905 # run_n_children is called before run_parent)
906 # Net::Server::PreFork does not have this problem, because it is using
907 # signal HUP stop children
911 my $prop = $self->{server
};
913 setup_fork_signal_mask
(1); # block signals
915 $self->SUPER::run_n_children
($n);
917 setup_fork_signal_mask
(0); # unblocking signals for parent
920 # test sig_hup with: for ((;;)) ;do kill -HUP `cat /run/pmgpolicy.pid`; done;
921 # wrapper to avoid multiple calls to sig_hup
925 my $prop = $self->{server
};
927 return if defined($prop->{_HUP
}); # do not call twice
929 $self->SUPER::sig_hup
();
932 ### child process which will accept on the port
936 my $prop = $self->{server
};
938 $self->log(4, "Child Preforked ($$)\n");
940 # set correct signal handlers before enabling signals again
941 $SIG{INT
} = $SIG{TERM
} = $SIG{QUIT
} = $SIG{HUP
} = sub {
942 $self->child_finish_hook;
946 delete $prop->{children
};
948 $self->child_init_hook;
952 my $sock = $prop->{sock
}->[0];
954 # make sure we got a good sock
955 if (!defined ($sock)){
956 $self->log(0, "ERROR: Received a bad socket");
960 # sometimes the socket is not usable, don't know why
961 my $flags = fcntl($sock, F_GETFL
, 0);
963 $self->log(0, "socket not ready - $!");
967 # cache is limited, because postfix does max. 100 queries
971 my $mux = $self->{mux
};
972 $mux->listen ($sock);
976 $self->log(0, "ERROR: $err");
979 $self->child_finish_hook;
993 my ($self, $level, $msg, @therest) = @_;
995 my $prop = $self->{server
};
997 return if $level =~ /^\d+$/ && $level > $prop->{log_level
};
999 $level = $syslog_map->{$level} || $level;
1001 syslog
($level, $msg, @therest);
1003 syslog
($level, $msg);
1007 my $server = bless {
1008 server
=> $server_attr,
1011 $server->sig_chld(); # avoid zombies after restart
1021 pmgpolicy - The Proxmox policy daemon
1029 Documentation is available at www.proxmox.com