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Commit | Line | Data |
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b429250e | 1 | #!/usr/bin/perl |
6f4aeba1 DM |
2 | |
3 | use strict; | |
f62194b2 DM |
4 | use warnings; |
5 | ||
6f4aeba1 | 6 | use Carp; |
c53efc6e | 7 | use Encode qw(encode); |
6f4aeba1 | 8 | use Getopt::Long; |
21853580 | 9 | use Time::HiRes qw (usleep gettimeofday tv_interval); |
6f4aeba1 DM |
10 | use POSIX qw(:sys_wait_h errno_h signal_h); |
11 | ||
12 | use MIME::Parser; | |
6296d93f | 13 | use MIME::WordDecoder qw(mime_to_perl_string); |
6f4aeba1 DM |
14 | use File::Path; |
15 | use Net::Server::PreFork; | |
16 | use Net::Server::SIG qw(register_sig check_sigs); | |
97662001 DM |
17 | use Net::SMTP; |
18 | ||
6f4aeba1 DM |
19 | use Fcntl ':flock'; |
20 | use File::Basename; | |
6f4aeba1 | 21 | use Xdgmime; |
f62194b2 DM |
22 | |
23 | use PVE::SafeSyslog; | |
24 | use PVE::ProcFSTools; | |
25 | use PVE::INotify; | |
6f4aeba1 DM |
26 | |
27 | use Mail::SpamAssassin; | |
28 | use Mail::SpamAssassin::NetSet; | |
6f4aeba1 | 29 | |
f62194b2 DM |
30 | use PMG::pmgcfg; |
31 | use PMG::Utils; | |
32 | use PMG::Cluster; | |
9f67f5b3 | 33 | use PMG::ClusterConfig; |
6f4aeba1 | 34 | |
f62194b2 DM |
35 | use PMG::DBTools; |
36 | use PMG::RuleDB; | |
37 | use PMG::RuleCache; | |
38 | use PMG::ModGroup; | |
39 | use PMG::AtomicFile; | |
7b3c53bd | 40 | use PMG::LDAPConfig; |
f62194b2 DM |
41 | use PMG::LDAPSet; |
42 | use PMG::Config; | |
a43bcf61 | 43 | use PMG::MailQueue; |
91a5af02 | 44 | use PMG::Unpack; |
521dca53 | 45 | use PMG::SMTP; |
6f4aeba1 | 46 | |
521dca53 DM |
47 | use PMG::Unpack; |
48 | use PMG::Statistic; | |
f62194b2 DM |
49 | |
50 | use base qw(Net::Server::PreFork); | |
6f4aeba1 | 51 | |
c2c21ccf SI |
52 | $ENV{'PATH'} = '/sbin:/bin:/usr/sbin:/usr/bin'; |
53 | ||
54 | delete @ENV{qw(IFS CDPATH ENV BASH_ENV)}; | |
55 | ||
6f4aeba1 DM |
56 | my $opt_commandline = [$0, @ARGV]; |
57 | my $opt_max_dequeue = 1; | |
dff363d9 | 58 | my $opt_dequeue_time = 30; |
6f4aeba1 DM |
59 | |
60 | my $opt_ext_port = 10024; | |
61 | my $opt_int_port = 10023; | |
62 | my $opt_inject_port = 10025; | |
63 | ||
64 | my $opt_testmode; | |
65 | my $opt_untrusted; | |
66 | my $opt_pidfile; | |
67 | my $opt_database; | |
68 | ||
e646f7ca DM |
69 | my $prog_name = 'pmg-smtp-filter'; |
70 | ||
71 | initlog($prog_name, 'mail'); | |
6f4aeba1 DM |
72 | |
73 | if (!GetOptions ('testmode=s' => \$opt_testmode, | |
f62194b2 DM |
74 | 'pidfile=s' => \$opt_pidfile, |
75 | 'untrusted' => \$opt_untrusted, | |
6f4aeba1 DM |
76 | 'database=s' => \$opt_database)) { |
77 | die "usage error\n"; | |
78 | exit (-1); | |
79 | } | |
80 | ||
83e9f427 | 81 | $opt_pidfile = "/run/${prog_name}.pid" if !$opt_pidfile; |
6f4aeba1 DM |
82 | |
83 | my $max_servers = 1; | |
84 | my $min_servers = 1; | |
85 | my $min_spare_servers = 0; | |
86 | my $max_spare_servers = 0; | |
87 | my $max_requests = 1; | |
88 | ||
89 | if (!$opt_testmode) { | |
f62194b2 DM |
90 | my $pmg_cfg = PMG::Config->new(); |
91 | ||
ac5d1312 | 92 | my $demo = $pmg_cfg->get('admin', 'demo'); |
6f4aeba1 DM |
93 | |
94 | if ($demo) { | |
95 | syslog ('info', 'demo mode detected - not starting server'); | |
96 | exit (0); | |
97 | } | |
98 | ||
f62194b2 | 99 | $max_servers = $pmg_cfg->get('mail', 'max_filters') + 2; |
6f4aeba1 DM |
100 | $min_servers = 2; |
101 | $min_spare_servers = 1; | |
102 | $max_spare_servers = 4; | |
103 | $max_requests = 20; | |
104 | } | |
105 | ||
106 | $opt_max_dequeue = 0 if $opt_testmode; | |
107 | ||
108 | my $daemonize = 1; | |
109 | if (defined ($ENV{BOUND_SOCKETS})) { | |
110 | $daemonize = undef; | |
111 | } | |
112 | ||
113 | my $server_attr = { | |
114 | port => [ $opt_int_port, $opt_ext_port ], | |
115 | host => '127.0.0.1', | |
116 | min_servers => $min_servers, | |
117 | max_servers => $max_servers, | |
118 | min_spare_servers => $min_spare_servers, | |
119 | max_spare_servers => $max_spare_servers, | |
120 | max_requests => $max_requests, | |
121 | serialize => 'flock', | |
122 | max_dequeue => $opt_max_dequeue, | |
123 | check_for_dequeue => $opt_dequeue_time, | |
124 | log_level => 3, | |
125 | pid_file => $opt_pidfile, | |
126 | no_close_by_child => 1, | |
127 | no_client_stdout => 1, | |
128 | commandline => $opt_commandline, | |
129 | }; | |
130 | ||
131 | $server_attr->{setsid} = $daemonize if !$opt_testmode; | |
132 | ||
133 | my $database; | |
134 | ||
135 | if (defined($opt_database)) { | |
136 | $database = $opt_database; | |
137 | } else { | |
138 | $database = $opt_testmode ? "Proxmox_testdb" : "Proxmox_ruledb"; | |
139 | } | |
140 | ||
141 | $SIG{'__WARN__'} = sub { | |
142 | my $err = $@; | |
143 | my $t = $_[0]; | |
144 | chomp $t; | |
145 | syslog('warning', "WARNING: %s", $t); | |
146 | $@ = $err; | |
147 | }; | |
148 | ||
149 | sub get_prox_vars { | |
150 | my ($self, $queue, $entity, $msginfo, $rule, $targets, $spaminfo) = @_; | |
151 | ||
152 | $spaminfo = { | |
153 | sa_score => $queue->{sa_score}, | |
154 | sa_hits => $queue->{sa_hits}, | |
155 | sa_data => $queue->{sa_data}, | |
156 | sa_max => $queue->{sa_max} | |
157 | } if !$spaminfo; | |
158 | ||
159 | my $vars = { | |
3650871c | 160 | 'SUBJECT' => PMG::Utils::decode_rfc1522($entity->head->get ('subject', 0) || 'No Subject'), |
6f4aeba1 DM |
161 | 'RULE' => $rule->{name}, |
162 | 'RULE_INFO' => $msginfo->{rule_info}, | |
163 | 'SENDER' => $msginfo->{sender}, | |
164 | 'SENDER_IP' => $msginfo->{xforward}->{addr}, | |
165 | 'TARGETS' => join (', ', @$targets), | |
166 | 'RECEIVERS' => join (', ', @{$msginfo->{targets}}), | |
167 | 'SPAMLEVEL' => $spaminfo->{sa_score}, | |
168 | 'SPAMSTARS' => '*' x (($spaminfo->{sa_score} || 0) > 100 ? 100 : $spaminfo->{sa_score} || 0), | |
ac5d1312 | 169 | 'ADMIN' => $self->{pmg_cfg}->get('admin', 'email'), |
6f4aeba1 DM |
170 | 'HOST' => $msginfo->{hostname}, |
171 | 'DOMAIN' => $msginfo->{domain}, | |
172 | 'FQDN' => $msginfo->{fqdn}, | |
173 | 'MSGID' => $queue->{msgid}, | |
1c15ce0f | 174 | 'VERSION' => PMG::pmgcfg::package() . "/" . PMG::pmgcfg::release() . "/" . PMG::pmgcfg::repoid(), |
6f4aeba1 DM |
175 | }; |
176 | ||
177 | $vars->{__spaminfo} = $spaminfo; | |
178 | ||
179 | if ($opt_testmode) { | |
4c4fec6b | 180 | if ($queue->{vinfo_clam} || $queue->{vinfo_avast} || $queue->{vinfo_custom}) { |
6f4aeba1 DM |
181 | $vars->{'VIRUS_INFO'} = "Virus Info:"; |
182 | $vars->{'VIRUS_INFO'} .= " clam: $queue->{vinfo_clam}" if $queue->{vinfo_clam}; | |
6ccbc37f | 183 | $vars->{'VIRUS_INFO'} .= " avast: $queue->{vinfo_avast}" if $queue->{vinfo_avast}; |
4c4fec6b | 184 | $vars->{'VIRUS_INFO'} .= " custom: $queue->{vinfo_custom}" if $queue->{vinfo_custom}; |
6f4aeba1 DM |
185 | } else { |
186 | $vars->{'VIRUS_INFO'} = ''; | |
187 | } | |
188 | } else { | |
189 | if ($queue->{vinfo}) { | |
190 | $vars->{'VIRUS_INFO'} = "Virus Info: $queue->{vinfo}\n"; | |
191 | } else { | |
192 | $vars->{'VIRUS_INFO'} = ''; | |
193 | } | |
194 | } | |
195 | ||
196 | $vars->{'SPAM_HITS'} = $spaminfo->{sa_hits}; | |
197 | ||
198 | $vars->{'SPAM_INFO'} = ''; | |
199 | my $sscores = $spaminfo->{sa_data}; | |
200 | ||
201 | if (defined ($sscores) && @$sscores != -1) { | |
202 | my $sa_text; | |
203 | if ($opt_testmode) { | |
204 | $sa_text = "Spam detection results: 100\n"; | |
205 | } else { | |
206 | $sa_text = "Spam detection results: $spaminfo->{sa_score}\n"; | |
207 | } | |
208 | ||
209 | foreach my $s (@$sscores) { | |
210 | if ($opt_testmode) { | |
ab2d0e56 | 211 | $sa_text .= sprintf ("%-22s %6s %s\n", $s->{rule}, 1, $s->{desc} || '-'); |
6f4aeba1 | 212 | } else { |
ab2d0e56 | 213 | $sa_text .= sprintf ("%-22s %6s %s\n", $s->{rule}, $s->{score}, $s->{desc} || '-'); |
6f4aeba1 DM |
214 | } |
215 | } | |
216 | $vars->{'SPAM_INFO'} = $sa_text; | |
217 | } | |
218 | ||
219 | if ($opt_testmode) { | |
220 | delete ($vars->{'ADMIN'}); | |
221 | #delete ($vars->{'SPAM_INFO'}); | |
222 | } | |
223 | ||
224 | return $vars; | |
225 | } | |
226 | ||
227 | sub apply_rules { | |
228 | my ($self, $queue, $msginfo, $entity, $ldap) = @_; | |
229 | ||
230 | my $final; | |
231 | my %rule_targets; | |
232 | my %rule_actions; | |
233 | my %rule_marks; | |
234 | my $matching_rules = []; | |
235 | ||
236 | my $rulecache = $self->{rulecache}; | |
237 | my $rules = $rulecache->rules (); | |
238 | my $dbh = $self->{ruledb}->{dbh}; | |
f62194b2 DM |
239 | |
240 | # first, we remove all conditional written 'X-' header attributes | |
6f4aeba1 DM |
241 | foreach my $rule (@$rules) { |
242 | next if !$rule->{active}; | |
243 | next if ($rule->{direction} == 0) && $msginfo->{trusted}; | |
244 | next if ($rule->{direction} == 1) && !$msginfo->{trusted}; | |
245 | ||
246 | my $actions = $rulecache->get_actions ($rule->{id}); | |
247 | if ($actions) { | |
248 | foreach my $action (@$actions) { | |
521dca53 | 249 | if ($action->isa ("PMG::RuleDB::ModField")) { |
6f4aeba1 DM |
250 | my $fname = $action->{field}; |
251 | next if $fname !~ m/^X-/i; | |
252 | $entity->head->delete($fname); | |
253 | } | |
254 | } | |
255 | } | |
256 | } | |
257 | ||
258 | foreach my $rule (@$rules) { | |
259 | next if !$rule->{active}; | |
260 | next if ($rule->{direction} == 0) && $msginfo->{trusted}; | |
261 | next if ($rule->{direction} == 1) && !$msginfo->{trusted}; | |
262 | ||
263 | # match from, when and what classes (not target dependent) | |
264 | if (!($rulecache->from_match ($rule->{id}, $msginfo->{sender}, $msginfo->{xforward}->{addr}, $ldap) && | |
265 | $rulecache->when_match ($rule->{id}, time))) { | |
266 | next; | |
267 | } | |
268 | ||
f62194b2 | 269 | $rule_marks{$rule->{id}} = |
6f4aeba1 DM |
270 | $rulecache->what_match ($rule->{id}, $queue, $entity, $msginfo, $dbh); |
271 | ||
272 | $rule_actions{$rule->{id}} = $rulecache->get_actions ($rule->{id}); | |
273 | my $fin = $rulecache->final ($rule->{id}); | |
274 | ||
275 | # match targets | |
276 | foreach my $target (@{$msginfo->{targets}}) { | |
277 | next if $final->{$target}; | |
278 | next if !defined ($rule_marks{$rule->{id}}); | |
279 | next if !defined ($rule_marks{$rule->{id}}->{$target}); | |
280 | next if !defined ($rule_marks{$rule->{id}}->{$target}->{marks}); | |
281 | next if !$rulecache->to_match ($rule->{id}, $target, $ldap); | |
282 | ||
283 | $final->{$target} = $fin; | |
284 | ||
285 | push @{$rule_targets{$rule->{id}}}, $target; | |
f62194b2 | 286 | } |
6f4aeba1 DM |
287 | } |
288 | ||
289 | # Compute rule_info (summary about matching rule) | |
f62194b2 | 290 | # this can be used for debugging |
6f4aeba1 DM |
291 | my $rule_info = ""; |
292 | foreach my $rule (@$rules) { | |
293 | next if !$rule_targets{$rule->{id}}; | |
294 | ||
295 | push @$matching_rules, $rule->{id}; | |
296 | ||
297 | $rule_info .= "Rule: $rule->{name}\n"; | |
298 | ||
299 | foreach my $target (@{$rule_targets{$rule->{id}}}) { | |
300 | $rule_info .= " Receiver: $target\n"; | |
f62194b2 | 301 | } |
6f4aeba1 DM |
302 | foreach my $action (@{$rule_actions{$rule->{id}}}) { |
303 | $rule_info .= " Action: " . $action->short_desc () . "\n"; | |
304 | } | |
305 | ||
306 | } | |
307 | $msginfo->{rule_info} = $rule_info; | |
308 | ||
309 | if ($msginfo->{testmode}) { | |
2d611b3b | 310 | my $vars = $self->get_prox_vars($queue, $entity, $msginfo, undef, [], undef); |
6f4aeba1 | 311 | my $fh = $msginfo->{test_fh}; |
2d611b3b | 312 | print $fh $rule_info; |
6f4aeba1 DM |
313 | } |
314 | ||
315 | # apply actions | |
316 | ||
f62194b2 | 317 | my $mod_group = PMG::ModGroup->new($entity, $msginfo->{targets}); |
6f4aeba1 DM |
318 | |
319 | foreach my $rule (@$rules) { | |
320 | my $targets = $rule_targets{$rule->{id}}; | |
321 | next if !$targets; | |
f62194b2 | 322 | |
6f4aeba1 DM |
323 | my $spaminfo; |
324 | foreach my $t (@$targets) { | |
325 | if ($rule_marks{$rule->{id}}->{$t} && $rule_marks{$rule->{id}}->{$t}->{spaminfo}) { | |
326 | $spaminfo = $rule_marks{$rule->{id}}->{$t}->{spaminfo}; | |
327 | # we assume spam info is the same for all matching targets | |
328 | last; | |
329 | } | |
330 | } | |
331 | ||
ab2d0e56 TL |
332 | my $vars = $self->get_prox_vars ( |
333 | $queue, $entity, $msginfo, $rule, $rule_targets{$rule->{id}}, $spaminfo); | |
6f4aeba1 | 334 | |
ab2d0e56 | 335 | my @sorted_actions = sort {$a->priority <=> $b->priority} @{$rule_actions{$rule->{id}}}; |
f62194b2 | 336 | |
6f4aeba1 | 337 | foreach my $action (@sorted_actions) { |
ab2d0e56 TL |
338 | $action->execute( |
339 | $queue, $self->{ruledb}, $mod_group, $rule_targets{$rule->{id}}, $msginfo, $vars, | |
340 | $rule_marks{$rule->{id}}->{marks}, $ldap | |
341 | ); | |
6f4aeba1 DM |
342 | last if $action->final; |
343 | } | |
344 | } | |
345 | ||
ab2d0e56 | 346 | # we deliver all mail not matched by any rule (default action = accept) |
6f4aeba1 DM |
347 | my $unmatched; |
348 | foreach my $target (@{$msginfo->{targets}}) { | |
349 | next if $final->{$target}; | |
350 | ||
351 | push @$unmatched, $target; | |
352 | } | |
353 | ||
354 | if ($unmatched) { | |
521dca53 | 355 | my $accept = PMG::RuleDB::Accept->new (); |
f62194b2 | 356 | $accept->execute ($queue, $self->{ruledb}, $mod_group, $unmatched, |
ecf08b56 | 357 | $msginfo, { RULE => 'default-accept' }, undef); |
6f4aeba1 DM |
358 | } |
359 | ||
360 | return $matching_rules; | |
361 | } | |
362 | ||
f62194b2 | 363 | # reload ruledb and pmg config |
6f4aeba1 DM |
364 | sub load_config { |
365 | my $self = shift; | |
366 | my $prop = $self->{server}; | |
367 | ||
368 | if ($self->{ruledb}) { | |
76bf5338 | 369 | $self->log ('info', "reloading configuration $database"); |
6f4aeba1 DM |
370 | $self->{ruledb}->close (); |
371 | } | |
372 | ||
f62194b2 DM |
373 | $self->{pmg_cfg} = PMG::Config->new(); |
374 | $self->{cinfo} = PVE::INotify::read_file("cluster.conf"); | |
6f4aeba1 | 375 | |
ab6aa17b DM |
376 | # create spool directories |
377 | PMG::MailQueue::create_spooldirs($self->{cinfo}->{local}->{cid}); | |
378 | ||
6f4aeba1 | 379 | eval { |
f62194b2 DM |
380 | my $dbh = PMG::DBTools::open_ruledb ($database); |
381 | $self->{ruledb} = PMG::RuleDB->new ($dbh); | |
6f4aeba1 DM |
382 | |
383 | # load rulecache | |
f62194b2 | 384 | $self->{rulecache} = PMG::RuleCache->new ($self->{ruledb}); |
6f4aeba1 DM |
385 | }; |
386 | ||
387 | my $err = $@; | |
388 | ||
389 | if ($err) { | |
390 | sleep (10); # reduce restart rate when postgres is down | |
391 | die $err; | |
392 | } | |
393 | ||
f62194b2 | 394 | # create LDAP object |
7b3c53bd DM |
395 | my $ldapconf = PVE::INotify::read_file('pmg-ldap.conf'); |
396 | $self->{ldap} = PMG::LDAPSet->new_from_ldap_cfg($ldapconf, 1); | |
6f4aeba1 | 397 | |
f62194b2 | 398 | $self->{reload_config} = 0; |
6f4aeba1 DM |
399 | } |
400 | ||
f62194b2 DM |
401 | my $syslog_map = { |
402 | 0 => 'err', | |
403 | 1 => 'warning', | |
404 | 2 => 'notice', | |
405 | 3 => 'info', | |
406 | 4 => 'debug' | |
407 | }; | |
408 | ||
6f4aeba1 DM |
409 | sub log { |
410 | my ($self, $level, $msg, @therest) = @_; | |
411 | my $prop = $self->{server}; | |
412 | ||
413 | return if $level =~ /^\d+$/ && $level > $prop->{log_level}; | |
414 | ||
f62194b2 | 415 | $level = $syslog_map->{$level} || $level; |
6f4aeba1 DM |
416 | if (@therest) { |
417 | syslog($level, $msg, @therest); | |
418 | } else { | |
419 | syslog ($level, $msg); | |
420 | } | |
421 | } | |
422 | ||
423 | sub pre_loop_hook { | |
424 | my $self = shift; | |
425 | my $prop = $self->{server}; | |
426 | ||
427 | $prop->{log_level} = 3; | |
428 | ||
76bf5338 | 429 | $self->log ('info', "Filter daemon (re)started (max. $max_servers processes)"); |
6f4aeba1 | 430 | |
521dca53 | 431 | eval { PMG::MailQueue::cleanup_active(); }; |
6f4aeba1 DM |
432 | $self->log (0, "Cleanup failures: $@") if $@; |
433 | ||
434 | my $sig_set = POSIX::SigSet->new; | |
f62194b2 DM |
435 | $sig_set->addset (&POSIX::SIGHUP); |
436 | $sig_set->addset (&POSIX::SIGCHLD); | |
6f4aeba1 DM |
437 | my $old_sig_set = POSIX::SigSet->new(); |
438 | ||
439 | sigprocmask (SIG_UNBLOCK, $sig_set, $old_sig_set); | |
440 | ||
441 | my ($backup_umask) = umask; | |
442 | ||
f62194b2 | 443 | my $pmg_cfg = PMG::Config->new(); |
e5b31a61 | 444 | $pmg_cfg->write_smtp_filter_config(); |
f62194b2 DM |
445 | |
446 | # Note: you need to restart the daemon when you change 'rbl_checks' | |
447 | my $rbl_checks = $pmg_cfg->get('spam', 'rbl_checks'); | |
6f4aeba1 DM |
448 | |
449 | $self->{sa} = Mail::SpamAssassin->new ({ | |
450 | debug => 0, | |
f62194b2 | 451 | local_tests_only => $opt_testmode || !$rbl_checks, |
6f4aeba1 DM |
452 | home_dir_for_helpers => '/root', |
453 | userstate_dir => '/root/.spamassassin', | |
454 | dont_copy_prefs => 1, | |
455 | stop_at_threshold => 0, | |
456 | }); | |
457 | ||
458 | $self->{sa}->compile_now; | |
459 | ||
460 | alarm (0); # SA forgets to clear alarm in some cases | |
461 | umask ($backup_umask); | |
e646f7ca | 462 | initlog ($prog_name, 'mail'); |
6f4aeba1 DM |
463 | |
464 | $SIG{'USR1'} = sub { | |
465 | # reloading server configuration | |
466 | if (defined $prop->{children}) { | |
467 | foreach my $pid (keys %{$prop->{children}}) { | |
1359baef | 468 | kill (10, $pid); # SIGUSR1 children |
6f4aeba1 DM |
469 | } |
470 | } | |
471 | } | |
472 | } | |
473 | ||
474 | sub child_init_hook { | |
475 | my $self = shift; | |
476 | ||
e646f7ca | 477 | $0 = "$prog_name child"; |
6f4aeba1 DM |
478 | |
479 | # $self->log (3, "init child"); | |
480 | ||
481 | eval { | |
482 | $self->load_config (); | |
483 | }; | |
484 | ||
485 | if ($@) { | |
486 | $self->log (0, $@); | |
487 | $self->child_finish_hook; | |
488 | exit; | |
489 | } | |
490 | ||
491 | $SIG{'USR1'} = sub { | |
f62194b2 | 492 | $self->{reload_config} = 1; |
6f4aeba1 DM |
493 | } |
494 | } | |
495 | ||
496 | sub child_finish_hook { | |
497 | my $self = shift; | |
f62194b2 | 498 | |
6f4aeba1 DM |
499 | # $self->log (3, "finish child"); |
500 | $self->{ruledb}->close () if $self->{ruledb}; | |
501 | } | |
502 | ||
dff363d9 DM |
503 | my $last_dequeue_time = 0; |
504 | ||
6f4aeba1 DM |
505 | sub run_dequeue { |
506 | my $self = shift; | |
507 | ||
dff363d9 DM |
508 | my $err; |
509 | ||
ab2d0e56 | 510 | # do database maintenance here, this is called every 30 secends |
6f4aeba1 | 511 | |
ab2d0e56 | 512 | eval { PMG::Utils::update_node_status_rrd() }; |
dff363d9 | 513 | if ($err = $@) { |
b902c0b8 | 514 | $self->log(0, "ERROR: $err"); |
dff363d9 DM |
515 | # continue |
516 | } | |
517 | ||
de199535 DM |
518 | my $ctime = time(); |
519 | my $tdiff = $ctime - $last_dequeue_time; | |
520 | ||
521 | # return if tdiff less than 2 minutes | |
dff363d9 | 522 | return if $tdiff < 2*60; |
de199535 DM |
523 | $last_dequeue_time = $ctime; |
524 | ||
1359baef | 525 | $self->log (2, "starting database maintenance"); |
6f4aeba1 DM |
526 | |
527 | my ($csec, $usec) = gettimeofday (); | |
528 | ||
f62194b2 DM |
529 | my $cinfo = PVE::INotify::read_file("cluster.conf"); |
530 | ||
ab2d0e56 | 531 | my $dbh = eval { PMG::DBTools::open_ruledb($database) }; |
dff363d9 | 532 | if ($err = $@) { |
b902c0b8 | 533 | $self->log (0, "ERROR: $err"); |
6f4aeba1 DM |
534 | return; |
535 | } | |
536 | ||
ab2d0e56 | 537 | eval { PMG::Statistic::update_stats($dbh, $cinfo) }; |
6f4aeba1 DM |
538 | $err = $@; |
539 | ||
6f4aeba1 | 540 | if ($err) { |
b902c0b8 | 541 | $self->log (0, $err); |
6f4aeba1 | 542 | } else { |
ab2d0e56 TL |
543 | my ($csec_end, $usec_end) = gettimeofday (); |
544 | my $ptime = int (($csec_end - $csec) * 1000 + ($usec_end - $usec) / 1000); | |
1359baef | 545 | $self->log (2, "end database maintenance ($ptime ms)"); |
6f4aeba1 DM |
546 | } |
547 | ||
548 | $dbh->disconnect() if $dbh; | |
549 | } | |
550 | ||
551 | ||
552 | sub unpack_entity { | |
553 | my ($self, $unpack, $entity, $msginfo, $queue) = @_; | |
554 | ||
ab2d0e56 | 555 | my ($magic, $path) = $entity->@{'PMX_magic_ct', 'PMX_decoded_path'}; |
6f4aeba1 | 556 | |
ab2d0e56 | 557 | if ($magic && $path) { |
6f4aeba1 DM |
558 | my $filename = basename ($path); |
559 | ||
521dca53 | 560 | if (PMG::Unpack::is_archive ($magic)) { |
6f4aeba1 DM |
561 | $self->log (3, "$queue->{logid}: found archive '$filename' ($magic)"); |
562 | ||
563 | my $start = [gettimeofday]; | |
564 | ||
565 | $unpack->{mime} = {}; | |
566 | ||
ab2d0e56 | 567 | eval { $unpack->unpack_archive ($path, $magic) }; |
6f4aeba1 DM |
568 | $self->log (3, "$queue->{logid}: unpack failed - $@") if $@; |
569 | ||
570 | $entity->{PMX_content_types} = $unpack->{mime}; | |
29d30ef8 | 571 | $entity->{PMX_filenames} = $unpack->{filenames}; |
f62194b2 | 572 | |
6f4aeba1 DM |
573 | if ($opt_testmode) { |
574 | my $types = join (", ", sort keys (%{$entity->{PMX_content_types}})); | |
575 | my $fh = $msginfo->{test_fh}; | |
576 | $filename =~ s/\d+/X/g if $filename =~ m/^msg-\d+-\d+.msg/; | |
577 | print $fh "Types:$filename: $types\n" if $types; | |
578 | } | |
579 | ||
ab2d0e56 | 580 | my $elapsed = int(tv_interval($start) * 1000); |
6f4aeba1 DM |
581 | $self->log (3, "$queue->{logid}: unpack archive '$filename' done ($elapsed ms)"); |
582 | } | |
583 | } | |
584 | ||
ab2d0e56 | 585 | for my $part ($entity->parts) { |
6f4aeba1 DM |
586 | $self->unpack_entity ($unpack, $part, $msginfo, $queue); |
587 | } | |
588 | ||
589 | } | |
590 | ||
591 | sub handle_smtp { | |
592 | my ($self, $smtp) = @_; | |
593 | ||
594 | my ($csec, $usec) = gettimeofday (); | |
595 | ||
596 | my $queue; | |
597 | my $msginfo = {}; | |
f62194b2 | 598 | my $pmg_cfg = $self->{pmg_cfg}; |
6f4aeba1 DM |
599 | my $ldap = $self->{ldap}; |
600 | my $cinfo = $self->{cinfo}; | |
601 | my $lcid = $cinfo->{local}->{cid}; | |
f62194b2 | 602 | |
ab2d0e56 | 603 | $msginfo->{test_fh} = PMG::AtomicFile->new("testresult.out", "w") if $opt_testmode; |
6f4aeba1 DM |
604 | |
605 | $msginfo->{trusted} = $self->{trusted}; | |
606 | ||
607 | ||
608 | # PHASE 1 - save incoming mail (already done) | |
609 | # on error: exit | |
610 | ||
611 | $queue = $smtp->{queue}; | |
612 | $queue->{sa} = $self->{sa}; | |
cda67dee DM |
613 | $queue->{clamav_heuristic_score} = |
614 | $opt_testmode ? 100 : $pmg_cfg->get('spam', 'clamav_heuristic_score'); | |
6f4aeba1 | 615 | |
f62194b2 | 616 | $queue->{lic_valid} = 1; |
6f4aeba1 DM |
617 | |
618 | my $matching_rules; | |
619 | ||
620 | eval { | |
621 | $msginfo->{testmode} = $opt_testmode; | |
622 | $msginfo->{sender} = $smtp->{from}; | |
623 | $msginfo->{xforward} = $smtp->{xforward}; | |
624 | $msginfo->{targets} = $smtp->{to}; | |
ad1c6bce | 625 | $msginfo->{param} = $smtp->{param}; |
6f4aeba1 | 626 | |
7ea41925 SI |
627 | my $dkim_sign = $msginfo->{trusted} && $pmg_cfg->get('admin', 'dkim_sign'); |
628 | if ($dkim_sign) { | |
629 | $msginfo->{dkim}->{sign} = $dkim_sign; | |
630 | $msginfo->{dkim}->{sign_all} = $pmg_cfg->get('admin', 'dkim_sign_all_mail'); | |
631 | $msginfo->{dkim}->{selector} = $pmg_cfg->get('admin', 'dkim_selector'); | |
632 | } | |
633 | ||
f62194b2 DM |
634 | $msginfo->{hostname} = PVE::INotify::nodename(); |
635 | my $resolv = PVE::INotify::read_file('resolvconf'); | |
636 | ||
637 | $msginfo->{domain} = $resolv->{search}; | |
da14f4e1 ML |
638 | $msginfo->{fqdn} = $msginfo->{hostname}; |
639 | $msginfo->{fqdn} .= ".$msginfo->{domain}" if $msginfo->{domain}; | |
6f4aeba1 | 640 | $msginfo->{lcid} = $lcid; |
f62194b2 | 641 | |
6f4aeba1 DM |
642 | # $msginfo->{targets} is case sensitive, |
643 | # but pmail is always lower case! | |
644 | ||
645 | foreach my $t (@{$msginfo->{targets}}) { | |
646 | my $res; | |
647 | if ($ldap && ($res = $ldap->account_info ($t))) { | |
648 | $msginfo->{pmail}->{$t} = $res->{pmail}; | |
649 | } else { | |
650 | $msginfo->{pmail}->{$t} = lc ($t); | |
651 | } | |
652 | } | |
653 | ||
654 | # PHASE 2 - parse mail | |
655 | # on error: exit | |
6f4aeba1 | 656 | |
f62194b2 DM |
657 | my $maxfiles = $pmg_cfg->get('clamav', 'archivemaxfiles'); |
658 | ||
659 | my $entity = $queue->parse_mail($maxfiles); | |
6f4aeba1 DM |
660 | |
661 | $self->log (3, "$queue->{logid}: new mail message-id=%s", $queue->{msgid}); | |
662 | ||
663 | # PHASE 3 - run external content analyzers | |
664 | # (SPAM analyzer is run on demand later) | |
665 | # on error: log error messages | |
666 | ||
4c4fec6b SI |
667 | # run custom script first |
668 | my ($vinfo, $custom_spaminfo) = PMG::Utils::analyze_custom_check( | |
f62194b2 | 669 | $queue, $queue->{dataname}, $pmg_cfg, $opt_testmode); |
6f4aeba1 | 670 | |
4c4fec6b SI |
671 | # test for virus if none found |
672 | if (!defined($vinfo)) { | |
673 | $vinfo = PMG::Utils::analyze_virus( | |
674 | $queue, $queue->{dataname}, $pmg_cfg, $opt_testmode); | |
0d5209bf | 675 | |
4c4fec6b SI |
676 | if ($vinfo && $vinfo =~ m/^Heuristics\.(.+)$/) { |
677 | my $hit = $1; | |
678 | $queue->{clamav_heuristic} = $hit; | |
679 | $vinfo = undef; | |
680 | } | |
681 | } | |
0d5209bf DM |
682 | $queue->{vinfo} = $vinfo; |
683 | ||
6f4aeba1 DM |
684 | # always add this headers to incoming mails |
685 | # to enable user to report false negatives | |
686 | if (!$msginfo->{trusted}) { | |
6f4aeba1 DM |
687 | if ($queue->{vinfo}) { |
688 | $entity->head->replace('X-Proxmox-VInfo', $queue->{vinfo}); | |
689 | } | |
6f4aeba1 DM |
690 | } |
691 | ||
692 | # we unpack after virus scanning, because this is more secure. | |
693 | # This way virus scanners gets the whole mail files and are able | |
694 | # to detect phishing signature for example - which would not work | |
695 | # if we decompose first and only analyze the decomposed attachments. | |
f62194b2 | 696 | # Disadvantage is that we need to unpack more than |
6f4aeba1 | 697 | # once (bad performance). |
f62194b2 | 698 | |
6f4aeba1 DM |
699 | # should we scan content types inside archives |
700 | ||
6f4aeba1 DM |
701 | my $rulecache = $self->{rulecache}; |
702 | ||
703 | my $scan_archives = 0; | |
704 | ||
705 | if (($rulecache->{archivefilter_in} && !$msginfo->{trusted}) || | |
706 | ($rulecache->{archivefilter_out} && $msginfo->{trusted})) { | |
707 | $scan_archives = 1; | |
708 | } | |
709 | ||
710 | if ($scan_archives && !$queue->{vinfo}) { | |
711 | ||
712 | # unpack all archives - determine contained content types | |
713 | ||
714 | my $decdir = $queue->{dumpdir} . "/__decoded_archives"; | |
715 | mkdir $decdir; | |
716 | ||
717 | my $start = [gettimeofday]; | |
f62194b2 | 718 | |
6f4aeba1 DM |
719 | my $unpack; |
720 | eval { | |
721 | ||
722 | # limits: We use clamav limit for maxfiles, and scan | |
723 | # only 4 levels, timeout of 30 seconds | |
724 | ||
521dca53 DM |
725 | $unpack = PMG::Unpack->new ( |
726 | tmpdir => $decdir, | |
727 | timeout => 30, | |
728 | ctonly => 1, # only detect CTs | |
729 | maxrec => -4, | |
730 | maxfiles => $maxfiles); | |
6f4aeba1 | 731 | |
f62194b2 | 732 | $self->unpack_entity ($unpack, $entity, $msginfo, $queue); |
6f4aeba1 DM |
733 | }; |
734 | ||
735 | my $err = $@; | |
736 | ||
737 | $unpack->cleanup() if $unpack; | |
738 | ||
739 | my $elapsed = int(tv_interval ($start) * 1000); | |
740 | ||
741 | if ($err) { | |
742 | $self->log (3, "$queue->{logid}: unpack archive failed ($elapsed ms) - $err"); | |
743 | } | |
744 | } | |
745 | ||
746 | # PHASE 4 - apply rules | |
747 | # on error: exit (cleanup process should do the rest) | |
f62194b2 | 748 | $msginfo->{maxspamsize} = $pmg_cfg->get('spam', 'maxspamsize'); |
6f4aeba1 DM |
749 | if ($msginfo->{maxspamsize} <= 1024*64) { |
750 | $msginfo->{maxspamsize} = 1024*64; | |
751 | } | |
752 | ||
753 | if ($msginfo->{trusted}) { | |
f62194b2 | 754 | my $hide = $pmg_cfg->get('mail', 'hide_received'); |
6f4aeba1 DM |
755 | $entity->head->delete("Received") if $hide; |
756 | } | |
757 | ||
f62194b2 | 758 | $matching_rules = $self->apply_rules($queue, $msginfo, $entity, $ldap); |
6f4aeba1 | 759 | }; |
f62194b2 | 760 | |
6f4aeba1 DM |
761 | my $err = $@; |
762 | ||
763 | $self->{errors} = $queue->{errors}; | |
764 | ||
765 | # restart on error | |
766 | $self->{errors} = 1 if $err; | |
767 | ||
768 | $queue->close (); | |
769 | ||
770 | die $err if $err; | |
771 | ||
772 | my ($csec_end, $usec_end) = gettimeofday (); | |
f62194b2 | 773 | my $time_total = |
6f4aeba1 DM |
774 | int (($csec_end-$csec)*1000 + ($usec_end - $usec)/1000); |
775 | ||
776 | # PHASE 5 - log statistics | |
777 | # on error: log error messages | |
778 | ||
779 | eval { | |
780 | my $dbh = $self->{ruledb}->{dbh}; | |
2579281e | 781 | |
6f4aeba1 DM |
782 | my $where = ""; |
783 | foreach my $rid (@$matching_rules) { | |
784 | $where .= $where ? " OR ID = $rid" : "ID = $rid"; | |
785 | } | |
2579281e DM |
786 | |
787 | $dbh->do ("UPDATE Rule SET Count = Count + 1 WHERE $where") if $where; | |
6f4aeba1 DM |
788 | |
789 | my $insert_cmds = "SELECT nextval ('cstatistic_id_seq');INSERT INTO CStatistic " . | |
790 | "(CID, RID, ID, Time, Bytes, Direction, Spamlevel, VirusInfo, PTime, Sender) VALUES (" . | |
2579281e | 791 | "$lcid, currval('cstatistic_id_seq'), currval('cstatistic_id_seq'),"; |
6f4aeba1 DM |
792 | |
793 | $insert_cmds .= $queue->{rtime} . ','; | |
794 | $insert_cmds .= $queue->{bytes} . ','; | |
2579281e | 795 | $insert_cmds .= $dbh->quote($msginfo->{trusted} ? 0 : 1) . ','; |
6f4aeba1 | 796 | $insert_cmds .= ($queue->{sa_score} || 0) . ','; |
2579281e | 797 | $insert_cmds .= $dbh->quote($queue->{vinfo}) . ','; |
6f4aeba1 | 798 | $insert_cmds .= $time_total . ','; |
c53efc6e | 799 | $insert_cmds .= $dbh->quote(encode('UTF-8', $msginfo->{sender})) . ');'; |
6f4aeba1 DM |
800 | |
801 | foreach my $r (@{$msginfo->{targets}}) { | |
c53efc6e | 802 | my $tmp = $dbh->quote(encode('UTF-8',$r)); |
6f4aeba1 DM |
803 | my $blocked = $queue->{status}->{$r} eq 'blocked' ? 1 : 0; |
804 | $insert_cmds .= "INSERT INTO CReceivers (CStatistic_CID, CStatistic_RID, Receiver, Blocked) " . | |
805 | "VALUES ($lcid, currval ('cstatistic_id_seq'), $tmp, '$blocked'); "; | |
806 | } | |
807 | ||
2579281e | 808 | $dbh->do($insert_cmds); |
6f4aeba1 | 809 | }; |
6f4aeba1 DM |
810 | # save $err (because log clears $@) |
811 | $err = $@; | |
812 | ||
813 | $time_total = $time_total/1000; | |
814 | ||
815 | my $ptspam = ($queue->{ptime_spam} || 0)/1000; | |
6f4aeba1 | 816 | my $ptclam = ($queue->{ptime_clam} || 0)/1000; |
4c4fec6b | 817 | my $ptcustom = ($queue->{ptime_custom} || 0)/1000; |
6f4aeba1 | 818 | |
4c4fec6b | 819 | $self->log(3, "$queue->{logid}: processing time: ${time_total} seconds ($ptspam, $ptclam, $ptcustom)"); |
6f4aeba1 DM |
820 | |
821 | $msginfo->{test_fh}->close if $opt_testmode; | |
822 | ||
2579281e | 823 | die $err if $err; |
6f4aeba1 DM |
824 | } |
825 | ||
ab6aa17b | 826 | my $initial_memory_usage; |
6f4aeba1 DM |
827 | |
828 | sub process_request { | |
829 | my $self = shift; | |
830 | my $prop = $self->{server}; | |
831 | my $sock = $prop->{client}; | |
832 | ||
833 | eval { | |
834 | ||
835 | # make sure the ldap cache is up to date | |
836 | $self->{ldap}->update (1); | |
837 | ||
f62194b2 | 838 | $self->load_config() if $self->{reload_config}; |
6f4aeba1 DM |
839 | |
840 | $self->{trusted} = 0; | |
841 | if ($prop->{sockport} == $opt_int_port && !$opt_untrusted) { | |
842 | $self->{trusted} = 1; | |
843 | } | |
844 | ||
521dca53 | 845 | my $smtp = PMG::SMTP->new ($sock); |
6f4aeba1 DM |
846 | |
847 | my $maxcount = $max_requests - $prop->{requests}; | |
848 | ||
849 | my $count = $smtp->loop (\&handle_smtp, $self, $maxcount); | |
850 | if ($count > 1) { | |
851 | $prop->{requests} += $count - 1; | |
852 | } | |
853 | }; | |
f62194b2 | 854 | |
6f4aeba1 DM |
855 | my $err = $@; |
856 | ||
857 | $self->log (0, $err) if $err; | |
858 | ||
24244199 | 859 | kill(15, $prop->{ppid}) if $opt_testmode; |
6f4aeba1 | 860 | |
f62194b2 | 861 | my $mem = PVE::ProcFSTools::read_memory_usage(); |
ab6aa17b DM |
862 | if (!defined($initial_memory_usage) || ($prop->{requests} < 10)) { |
863 | $initial_memory_usage = $mem->{resident}; | |
864 | } | |
6f4aeba1 DM |
865 | |
866 | if ($opt_testmode) { | |
867 | $self->log (0, "memory usage: $mem->{size} bytes"); | |
868 | } else { | |
869 | if ($self->{errors}) { | |
870 | $self->log (0, "fast exit because of errors (free $mem->{size} bytes)"); | |
871 | $self->done (1); | |
ab6aa17b DM |
872 | } else { |
873 | my $diff = $mem->{resident} - $initial_memory_usage; | |
874 | if ($diff > 5*1024*1024) { | |
875 | $self->log (0, "fast exit to reduce server load (free $diff bytes)"); | |
876 | $self->done (1); | |
877 | } | |
878 | } | |
6f4aeba1 DM |
879 | } |
880 | ||
881 | $self->done (1) if $err; | |
882 | } | |
883 | ||
83e9f427 | 884 | # test sig_hup with: for ((;;)) ;do kill -HUP `cat /run/${prog_name}.pid`; done; |
6f4aeba1 DM |
885 | # wrapper to avoid multiple calls to sig_hup |
886 | sub sig_hup { | |
887 | my $self = shift; | |
888 | my $prop = $self->{server}; | |
889 | ||
890 | return if defined ($prop->{_HUP}); # do not call twice | |
891 | ||
892 | $self->SUPER::sig_hup(); | |
893 | } | |
894 | ||
895 | sub restart_close_hook { | |
896 | my $self = shift; | |
897 | ||
898 | my $sig_set = POSIX::SigSet->new; | |
f62194b2 | 899 | $sig_set->addset (&POSIX::SIGHUP); |
6f4aeba1 DM |
900 | $sig_set->addset (&POSIX::SIGCHLD); # to avoid zombies |
901 | my $old_sig_set = POSIX::SigSet->new(); | |
902 | ||
903 | sigprocmask (SIG_BLOCK, $sig_set, $old_sig_set); | |
904 | } | |
905 | ||
906 | sub pre_server_close_hook { | |
907 | my $self = shift; | |
908 | my $prop = $self->{server}; | |
909 | ||
910 | if (defined $prop->{_HUP}) { | |
f62194b2 | 911 | undef $prop->{pid_file_unlink}; |
6f4aeba1 DM |
912 | } |
913 | ||
914 | if (defined $prop->{children}) { | |
915 | foreach my $pid (keys %{$prop->{children}}) { | |
1359baef | 916 | kill (1, $pid); # HUP children |
6f4aeba1 DM |
917 | } |
918 | } | |
919 | ||
1359baef | 920 | # nicely shutdown children (give them max 30 seconds to shut down) |
08f49442 | 921 | my $previous_alarm = alarm(30); |
6f4aeba1 DM |
922 | eval { |
923 | local $SIG{ALRM} = sub { die "Timed Out!\n" }; | |
f62194b2 | 924 | |
6f4aeba1 DM |
925 | my $pid; |
926 | 1 while ((($pid = waitpid (-1, 0)) > 0) || ($! == EINTR)); | |
08f49442 DM |
927 | |
928 | alarm(0); # avoid race | |
6f4aeba1 DM |
929 | }; |
930 | alarm ($previous_alarm); | |
931 | } | |
932 | ||
933 | # initialize mime system before fork | |
934 | xdg_mime_get_mime_type_for_file ($0); | |
935 | ||
936 | my $server = bless { | |
937 | server => $server_attr, | |
938 | }; | |
939 | ||
940 | if (!$opt_testmode) { | |
941 | $server->run (); | |
942 | } else { | |
943 | if (fork) { | |
21853580 | 944 | $server->run(); |
6f4aeba1 | 945 | } else { |
21853580 | 946 | |
f62194b2 DM |
947 | my $sender ='sender@proxtest.com'; |
948 | my $targets = ['target1@proxtest.com', | |
6f4aeba1 DM |
949 | 'target2@proxtest.com', |
950 | 'target3@proxtest.com']; | |
951 | ||
21853580 DM |
952 | my $smtp; |
953 | while (!$smtp) { | |
954 | $smtp = Net::SMTP->new ('127.0.0.1', Port => 10023); | |
955 | last if $smtp; | |
956 | usleep(10); | |
957 | } | |
6f4aeba1 DM |
958 | |
959 | # syslog ('info', "connected to " . $smtp->domain); | |
960 | ||
961 | $smtp->mail ($sender); | |
962 | $smtp->to (@$targets); | |
963 | ||
964 | $smtp->data(); | |
965 | ||
f62194b2 DM |
966 | open (TMP, $opt_testmode) || |
967 | die "unable to upen file '$opt_testmode' - $! :ERROR"; | |
6f4aeba1 DM |
968 | while (<TMP>) { |
969 | $smtp->datasend ($_); | |
970 | } | |
971 | close TMP; | |
972 | ||
973 | $smtp->datasend ("\n"); | |
974 | $smtp->dataend (); | |
975 | ||
976 | $smtp->quit; | |
977 | } | |
978 | } | |
979 | ||
980 | exit (0); | |
981 | ||
982 | __END__ | |
983 | ||
984 | =head1 NAME | |
f62194b2 DM |
985 | |
986 | pmg-smtp-filter - the Proxmox mail filter | |
6f4aeba1 DM |
987 | |
988 | =head1 SYNOPSIS | |
989 | ||
f62194b2 | 990 | pmg-smtp-filter [-u] [-t testfile] |
6f4aeba1 DM |
991 | |
992 | =head1 DESCRIPTION | |
993 | ||
994 | Documentation is available at www.proxmox.com |