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1 | package PMG::Utils; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use DBI; | |
6 | use Net::Cmd; | |
7 | use Net::SMTP; | |
8 | use IO::File; | |
9 | use File::stat; | |
10 | use POSIX qw(strftime); | |
11 | use File::stat; | |
12 | use File::Basename; | |
13 | use MIME::Words; | |
14 | use MIME::Parser; | |
15 | use Time::HiRes qw (gettimeofday); | |
16 | use Time::Local; | |
17 | use Xdgmime; | |
18 | use Data::Dumper; | |
19 | use Digest::SHA; | |
20 | use Digest::MD5; | |
21 | use Net::IP; | |
22 | use Socket; | |
23 | use RRDs; | |
24 | use Filesys::Df; | |
25 | use Encode; | |
26 | use HTML::Entities; | |
27 | ||
28 | use PVE::ProcFSTools; | |
29 | use PVE::Network; | |
30 | use PVE::Tools; | |
31 | use PVE::SafeSyslog; | |
32 | use PVE::ProcFSTools; | |
33 | use PMG::AtomicFile; | |
34 | use PMG::MailQueue; | |
35 | use PMG::SMTPPrinter; | |
36 | ||
37 | my $valid_pmg_realms = ['pam', 'pmg', 'quarantine']; | |
38 | ||
39 | PVE::JSONSchema::register_standard_option('realm', { | |
40 | description => "Authentication domain ID", | |
41 | type => 'string', | |
42 | enum => $valid_pmg_realms, | |
43 | maxLength => 32, | |
44 | }); | |
45 | ||
46 | PVE::JSONSchema::register_standard_option('pmg-starttime', { | |
47 | description => "Only consider entries newer than 'starttime' (unix epoch). Default is 'now - 1day'.", | |
48 | type => 'integer', | |
49 | minimum => 0, | |
50 | optional => 1, | |
51 | }); | |
52 | ||
53 | PVE::JSONSchema::register_standard_option('pmg-endtime', { | |
54 | description => "Only consider entries older than 'endtime' (unix epoch). This is set to '<start> + 1day' by default.", | |
55 | type => 'integer', | |
56 | minimum => 1, | |
57 | optional => 1, | |
58 | }); | |
59 | ||
60 | PVE::JSONSchema::register_format('pmg-userid', \&verify_username); | |
61 | sub verify_username { | |
62 | my ($username, $noerr) = @_; | |
63 | ||
64 | $username = '' if !$username; | |
65 | my $len = length($username); | |
66 | if ($len < 3) { | |
67 | die "user name '$username' is too short\n" if !$noerr; | |
68 | return undef; | |
69 | } | |
70 | if ($len > 64) { | |
71 | die "user name '$username' is too long ($len > 64)\n" if !$noerr; | |
72 | return undef; | |
73 | } | |
74 | ||
75 | # we only allow a limited set of characters | |
76 | # colon is not allowed, because we store usernames in | |
77 | # colon separated lists)! | |
78 | # slash is not allowed because it is used as pve API delimiter | |
79 | # also see "man useradd" | |
80 | my $realm_list = join('|', @$valid_pmg_realms); | |
81 | if ($username =~ m!^([^\s:/]+)\@(${realm_list})$!) { | |
82 | return wantarray ? ($username, $1, $2) : $username; | |
83 | } | |
84 | ||
85 | die "value '$username' does not look like a valid user name\n" if !$noerr; | |
86 | ||
87 | return undef; | |
88 | } | |
89 | ||
90 | PVE::JSONSchema::register_standard_option('userid', { | |
91 | description => "User ID", | |
92 | type => 'string', format => 'pmg-userid', | |
93 | minLength => 4, | |
94 | maxLength => 64, | |
95 | }); | |
96 | ||
97 | PVE::JSONSchema::register_standard_option('username', { | |
98 | description => "Username (without realm)", | |
99 | type => 'string', | |
100 | pattern => '[^\s:\/\@]{3,60}', | |
101 | minLength => 4, | |
102 | maxLength => 64, | |
103 | }); | |
104 | ||
105 | PVE::JSONSchema::register_standard_option('pmg-email-address', { | |
106 | description => "Email Address (allow most characters).", | |
107 | type => 'string', | |
108 | pattern => '(?:|[^\s\/\@]+\@[^\s\/\@]+)', | |
109 | maxLength => 512, | |
110 | minLength => 3, | |
111 | }); | |
112 | ||
113 | sub lastid { | |
114 | my ($dbh, $seq) = @_; | |
115 | ||
116 | return $dbh->last_insert_id( | |
117 | undef, undef, undef, undef, { sequence => $seq}); | |
118 | } | |
119 | ||
120 | # quote all regex operators | |
121 | sub quote_regex { | |
122 | my $val = shift; | |
123 | ||
124 | $val =~ s/([\(\)\[\]\/\}\+\*\?\.\|\^\$\\])/\\$1/g; | |
125 | ||
126 | return $val; | |
127 | } | |
128 | ||
129 | sub file_older_than { | |
130 | my ($filename, $lasttime) = @_; | |
131 | ||
132 | my $st = stat($filename); | |
133 | ||
134 | return 0 if !defined($st); | |
135 | ||
136 | return ($lasttime >= $st->ctime); | |
137 | } | |
138 | ||
139 | sub extract_filename { | |
140 | my ($head) = @_; | |
141 | ||
142 | if (my $value = $head->recommended_filename()) { | |
143 | chomp $value; | |
144 | if (my $decvalue = MIME::Words::decode_mimewords($value)) { | |
145 | $decvalue =~ s/\0/ /g; | |
146 | $decvalue = PVE::Tools::trim($decvalue); | |
147 | return $decvalue; | |
148 | } | |
149 | } | |
150 | ||
151 | return undef; | |
152 | } | |
153 | ||
154 | sub remove_marks { | |
155 | my ($entity, $add_id, $id) = @_; | |
156 | ||
157 | $id //= 1; | |
158 | ||
159 | foreach my $tag (grep {/^x-proxmox-tmp/i} $entity->head->tags) { | |
160 | $entity->head->delete ($tag); | |
161 | } | |
162 | ||
163 | $entity->head->replace('X-Proxmox-tmp-AID', $id) if $add_id; | |
164 | ||
165 | foreach my $part ($entity->parts) { | |
166 | $id = remove_marks($part, $add_id, $id + 1); | |
167 | } | |
168 | ||
169 | return $id; | |
170 | } | |
171 | ||
172 | sub subst_values { | |
173 | my ($body, $dh) = @_; | |
174 | ||
175 | return if !$body; | |
176 | ||
177 | foreach my $k (keys %$dh) { | |
178 | my $v = $dh->{$k}; | |
179 | if (defined($v)) { | |
180 | $body =~ s/__\Q${k}\E__/$v/gs; | |
181 | } | |
182 | } | |
183 | ||
184 | return $body; | |
185 | } | |
186 | ||
187 | sub reinject_mail { | |
188 | my ($entity, $sender, $targets, $xforward, $me, $nodsn) = @_; | |
189 | ||
190 | my $smtp; | |
191 | my $resid; | |
192 | my $rescode; | |
193 | my $resmess; | |
194 | ||
195 | eval { | |
196 | my $smtp = Net::SMTP->new('127.0.0.1', Port => 10025, Hello => $me) || | |
197 | die "unable to connect to localhost at port 10025"; | |
198 | ||
199 | if (defined($xforward)) { | |
200 | my $xfwd; | |
201 | ||
202 | foreach my $attr (keys %{$xforward}) { | |
203 | $xfwd .= " $attr=$xforward->{$attr}"; | |
204 | } | |
205 | ||
206 | if ($xfwd && $smtp->command("XFORWARD", $xfwd)->response() != CMD_OK) { | |
207 | syslog('err', "xforward error - got: %s %s", $smtp->code, scalar($smtp->message)); | |
208 | } | |
209 | } | |
210 | ||
211 | if (!$smtp->mail($sender)) { | |
212 | syslog('err', "smtp error - got: %s %s", $smtp->code, scalar ($smtp->message)); | |
213 | die "smtp from: ERROR"; | |
214 | } | |
215 | ||
216 | my $dsnopts = $nodsn ? {Notify => ['NEVER']} : {}; | |
217 | ||
218 | if (!$smtp->to (@$targets, $dsnopts)) { | |
219 | syslog ('err', "smtp error - got: %s %s", $smtp->code, scalar($smtp->message)); | |
220 | die "smtp to: ERROR"; | |
221 | } | |
222 | ||
223 | # Output the head: | |
224 | #$entity->sync_headers (); | |
225 | $smtp->data(); | |
226 | ||
227 | my $out = PMG::SMTPPrinter->new($smtp); | |
228 | $entity->print($out); | |
229 | ||
230 | # make sure we always have a newline at the end of the mail | |
231 | # else dataend() fails | |
232 | $smtp->datasend("\n"); | |
233 | ||
234 | if ($smtp->dataend()) { | |
235 | my @msgs = $smtp->message; | |
236 | $resmess = $msgs[$#msgs]; | |
237 | ($resid) = $resmess =~ m/Ok: queued as ([0-9A-Z]+)/; | |
238 | $rescode = $smtp->code; | |
239 | if (!$resid) { | |
240 | die sprintf("unexpected SMTP result - got: %s %s : WARNING", $smtp->code, $resmess); | |
241 | } | |
242 | } else { | |
243 | my @msgs = $smtp->message; | |
244 | $resmess = $msgs[$#msgs]; | |
245 | $rescode = $smtp->code; | |
246 | die sprintf("sending data failed - got: %s %s : ERROR", $smtp->code, $resmess); | |
247 | } | |
248 | }; | |
249 | my $err = $@; | |
250 | ||
251 | $smtp->quit if $smtp; | |
252 | ||
253 | if ($err) { | |
254 | syslog ('err', $err); | |
255 | } | |
256 | ||
257 | return wantarray ? ($resid, $rescode, $resmess) : $resid; | |
258 | } | |
259 | ||
260 | sub analyze_virus_clam { | |
261 | my ($queue, $dname, $pmg_cfg) = @_; | |
262 | ||
263 | my $timeout = 60*5; | |
264 | my $vinfo; | |
265 | ||
266 | my $clamdscan_opts = "--stdout"; | |
267 | ||
268 | my ($csec, $usec) = gettimeofday(); | |
269 | ||
270 | my $previous_alarm; | |
271 | ||
272 | eval { | |
273 | ||
274 | $previous_alarm = alarm($timeout); | |
275 | ||
276 | $SIG{ALRM} = sub { | |
277 | die "$queue->{logid}: Maximum time ($timeout sec) exceeded. " . | |
278 | "virus analyze (clamav) failed: ERROR"; | |
279 | }; | |
280 | ||
281 | open(CMD, "/usr/bin/clamdscan $clamdscan_opts '$dname'|") || | |
282 | die "$queue->{logid}: can't exec clamdscan: $! : ERROR"; | |
283 | ||
284 | my $ifiles; | |
285 | ||
286 | my $response = ''; | |
287 | while (defined(my $line = <CMD>)) { | |
288 | if ($line =~ m/^$dname.*:\s+([^ :]*)\s+FOUND$/) { | |
289 | # we just use the first detected virus name | |
290 | $vinfo = $1 if !$vinfo; | |
291 | } elsif ($line =~ m/^Infected files:\s(\d*)$/i) { | |
292 | $ifiles = $1; | |
293 | } | |
294 | ||
295 | $response .= $line; | |
296 | } | |
297 | ||
298 | close(CMD); | |
299 | ||
300 | alarm(0); # avoid race conditions | |
301 | ||
302 | if (!defined($ifiles)) { | |
303 | die "$queue->{logid}: got undefined output from " . | |
304 | "virus detector: $response : ERROR"; | |
305 | } | |
306 | ||
307 | if ($vinfo) { | |
308 | syslog('info', "$queue->{logid}: virus detected: $vinfo (clamav)"); | |
309 | } | |
310 | }; | |
311 | my $err = $@; | |
312 | ||
313 | alarm($previous_alarm); | |
314 | ||
315 | my ($csec_end, $usec_end) = gettimeofday(); | |
316 | $queue->{ptime_clam} = | |
317 | int (($csec_end-$csec)*1000 + ($usec_end - $usec)/1000); | |
318 | ||
319 | if ($err) { | |
320 | syslog ('err', $err); | |
321 | $vinfo = undef; | |
322 | $queue->{errors} = 1; | |
323 | } | |
324 | ||
325 | $queue->{vinfo_clam} = $vinfo; | |
326 | ||
327 | return $vinfo ? "$vinfo (clamav)" : undef; | |
328 | } | |
329 | ||
330 | sub analyze_virus { | |
331 | my ($queue, $filename, $pmg_cfg, $testmode) = @_; | |
332 | ||
333 | # TODO: support other virus scanners? | |
334 | ||
335 | # always scan with clamav | |
336 | return analyze_virus_clam($queue, $filename, $pmg_cfg); | |
337 | } | |
338 | ||
339 | sub magic_mime_type_for_file { | |
340 | my ($filename) = @_; | |
341 | ||
342 | # we do not use get_mime_type_for_file, because that considers | |
343 | # filename extensions - we only want magic type detection | |
344 | ||
345 | my $bufsize = Xdgmime::xdg_mime_get_max_buffer_extents(); | |
346 | die "got strange value for max_buffer_extents" if $bufsize > 4096*10; | |
347 | ||
348 | my $ct = "application/octet-stream"; | |
349 | ||
350 | my $fh = IO::File->new("<$filename") || | |
351 | die "unable to open file '$filename' - $!"; | |
352 | ||
353 | my ($buf, $len); | |
354 | if (($len = $fh->read($buf, $bufsize)) > 0) { | |
355 | $ct = xdg_mime_get_mime_type_for_data($buf, $len); | |
356 | } | |
357 | $fh->close(); | |
358 | ||
359 | die "unable to read file '$filename' - $!" if ($len < 0); | |
360 | ||
361 | return $ct; | |
362 | } | |
363 | ||
364 | sub add_ct_marks { | |
365 | my ($entity) = @_; | |
366 | ||
367 | if (my $path = $entity->{PMX_decoded_path}) { | |
368 | ||
369 | # set a reasonable default if magic does not give a result | |
370 | $entity->{PMX_magic_ct} = $entity->head->mime_attr('content-type'); | |
371 | ||
372 | if (my $ct = magic_mime_type_for_file($path)) { | |
373 | if ($ct ne 'application/octet-stream' || !$entity->{PMX_magic_ct}) { | |
374 | $entity->{PMX_magic_ct} = $ct; | |
375 | } | |
376 | } | |
377 | ||
378 | my $filename = $entity->head->recommended_filename; | |
379 | $filename = basename($path) if !defined($filename) || $filename eq ''; | |
380 | ||
381 | if (my $ct = xdg_mime_get_mime_type_from_file_name($filename)) { | |
382 | $entity->{PMX_glob_ct} = $ct; | |
383 | } | |
384 | } | |
385 | ||
386 | foreach my $part ($entity->parts) { | |
387 | add_ct_marks ($part); | |
388 | } | |
389 | } | |
390 | ||
391 | # x509 certificate utils | |
392 | ||
393 | # only write output if something fails | |
394 | sub run_silent_cmd { | |
395 | my ($cmd) = @_; | |
396 | ||
397 | my $outbuf = ''; | |
398 | ||
399 | my $record_output = sub { | |
400 | $outbuf .= shift; | |
401 | $outbuf .= "\n"; | |
402 | }; | |
403 | ||
404 | eval { | |
405 | PVE::Tools::run_command($cmd, outfunc => $record_output, | |
406 | errfunc => $record_output); | |
407 | }; | |
408 | my $err = $@; | |
409 | ||
410 | if ($err) { | |
411 | print STDERR $outbuf; | |
412 | die $err; | |
413 | } | |
414 | } | |
415 | ||
416 | my $proxmox_tls_cert_fn = "/etc/pmg/pmg-tls.pem"; | |
417 | ||
418 | sub gen_proxmox_tls_cert { | |
419 | my ($force) = @_; | |
420 | ||
421 | my $resolv = PVE::INotify::read_file('resolvconf'); | |
422 | my $domain = $resolv->{search}; | |
423 | ||
424 | my $company = $domain; # what else ? | |
425 | my $cn = "*.$domain"; | |
426 | ||
427 | return if !$force && -f $proxmox_tls_cert_fn; | |
428 | ||
429 | my $sslconf = <<__EOD__; | |
430 | RANDFILE = /root/.rnd | |
431 | extensions = v3_req | |
432 | ||
433 | [ req ] | |
434 | default_bits = 4096 | |
435 | distinguished_name = req_distinguished_name | |
436 | req_extensions = v3_req | |
437 | prompt = no | |
438 | string_mask = nombstr | |
439 | ||
440 | [ req_distinguished_name ] | |
441 | organizationalUnitName = Proxmox Mail Gateway | |
442 | organizationName = $company | |
443 | commonName = $cn | |
444 | ||
445 | [ v3_req ] | |
446 | basicConstraints = CA:FALSE | |
447 | nsCertType = server | |
448 | keyUsage = nonRepudiation, digitalSignature, keyEncipherment | |
449 | __EOD__ | |
450 | ||
451 | my $cfgfn = "/tmp/pmgtlsconf-$$.tmp"; | |
452 | my $fh = IO::File->new ($cfgfn, "w"); | |
453 | print $fh $sslconf; | |
454 | close ($fh); | |
455 | ||
456 | eval { | |
457 | my $cmd = ['openssl', 'req', '-batch', '-x509', '-new', '-sha256', | |
458 | '-config', $cfgfn, '-days', 3650, '-nodes', | |
459 | '-out', $proxmox_tls_cert_fn, | |
460 | '-keyout', $proxmox_tls_cert_fn]; | |
461 | run_silent_cmd($cmd); | |
462 | }; | |
463 | ||
464 | if (my $err = $@) { | |
465 | unlink $proxmox_tls_cert_fn; | |
466 | unlink $cfgfn; | |
467 | die "unable to generate proxmox certificate request:\n$err"; | |
468 | } | |
469 | ||
470 | unlink $cfgfn; | |
471 | } | |
472 | ||
473 | sub find_local_network_for_ip { | |
474 | my ($ip, $noerr) = @_; | |
475 | ||
476 | my $testip = Net::IP->new($ip); | |
477 | ||
478 | my $isv6 = $testip->version == 6; | |
479 | my $routes = $isv6 ? | |
480 | PVE::ProcFSTools::read_proc_net_ipv6_route() : | |
481 | PVE::ProcFSTools::read_proc_net_route(); | |
482 | ||
483 | foreach my $entry (@$routes) { | |
484 | my $mask; | |
485 | if ($isv6) { | |
486 | $mask = $entry->{prefix}; | |
487 | next if !$mask; # skip the default route... | |
488 | } else { | |
489 | $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}}; | |
490 | next if !defined($mask); | |
491 | } | |
492 | my $cidr = "$entry->{dest}/$mask"; | |
493 | my $testnet = Net::IP->new($cidr); | |
494 | my $overlap = $testnet->overlaps($testip); | |
495 | if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP || | |
496 | $overlap == $Net::IP::IP_IDENTICAL) | |
497 | { | |
498 | return $cidr; | |
499 | } | |
500 | } | |
501 | ||
502 | return undef if $noerr; | |
503 | ||
504 | die "unable to detect local network for ip '$ip'\n"; | |
505 | } | |
506 | ||
507 | my $service_aliases = { | |
508 | 'postfix' => 'postfix@-', | |
509 | 'postgres' => 'postgresql@9.6-main', | |
510 | }; | |
511 | ||
512 | sub lookup_real_service_name { | |
513 | my $alias = shift; | |
514 | ||
515 | return $service_aliases->{$alias} // $alias; | |
516 | } | |
517 | ||
518 | sub get_full_service_state { | |
519 | my ($service) = @_; | |
520 | ||
521 | my $res; | |
522 | ||
523 | my $parser = sub { | |
524 | my $line = shift; | |
525 | if ($line =~ m/^([^=\s]+)=(.*)$/) { | |
526 | $res->{$1} = $2; | |
527 | } | |
528 | }; | |
529 | ||
530 | $service = $service_aliases->{$service} // $service; | |
531 | PVE::Tools::run_command(['systemctl', 'show', $service], outfunc => $parser); | |
532 | ||
533 | return $res; | |
534 | } | |
535 | ||
536 | our $db_service_list = [ | |
537 | 'pmgpolicy', 'pmgmirror', 'pmgtunnel', 'pmg-smtp-filter' ]; | |
538 | ||
539 | sub service_wait_stopped { | |
540 | my ($timeout, $service_list) = @_; | |
541 | ||
542 | my $starttime = time(); | |
543 | ||
544 | foreach my $service (@$service_list) { | |
545 | PVE::Tools::run_command(['systemctl', 'stop', $service]); | |
546 | } | |
547 | ||
548 | while (1) { | |
549 | my $wait = 0; | |
550 | ||
551 | foreach my $service (@$service_list) { | |
552 | my $ss = get_full_service_state($service); | |
553 | my $state = $ss->{ActiveState} // 'unknown'; | |
554 | ||
555 | if ($state ne 'inactive') { | |
556 | if ((time() - $starttime) > $timeout) { | |
557 | syslog('err', "unable to stop services (got timeout)"); | |
558 | $wait = 0; | |
559 | last; | |
560 | } | |
561 | $wait = 1; | |
562 | } | |
563 | } | |
564 | ||
565 | last if !$wait; | |
566 | ||
567 | sleep(1); | |
568 | } | |
569 | } | |
570 | ||
571 | sub service_cmd { | |
572 | my ($service, $cmd) = @_; | |
573 | ||
574 | die "unknown service command '$cmd'\n" | |
575 | if $cmd !~ m/^(start|stop|restart|reload|reload-or-restart)$/; | |
576 | ||
577 | if ($service eq 'pmgdaemon' || $service eq 'pmgproxy') { | |
578 | die "invalid service cmd '$service $cmd': ERROR" if $cmd eq 'stop'; | |
579 | } elsif ($service eq 'fetchmail') { | |
580 | # use restart instead of start - else it does not start 'exited' unit | |
581 | # after setting START_DAEMON=yes in /etc/default/fetchmail | |
582 | $cmd = 'restart' if $cmd eq 'start'; | |
583 | } | |
584 | ||
585 | $service = $service_aliases->{$service} // $service; | |
586 | PVE::Tools::run_command(['systemctl', $cmd, $service]); | |
587 | }; | |
588 | ||
589 | # this is also used to get the IP of the local node | |
590 | sub lookup_node_ip { | |
591 | my ($nodename, $noerr) = @_; | |
592 | ||
593 | my ($family, $packed_ip); | |
594 | ||
595 | eval { | |
596 | my @res = PVE::Tools::getaddrinfo_all($nodename); | |
597 | $family = $res[0]->{family}; | |
598 | $packed_ip = (PVE::Tools::unpack_sockaddr_in46($res[0]->{addr}))[2]; | |
599 | }; | |
600 | ||
601 | if ($@) { | |
602 | die "hostname lookup failed:\n$@" if !$noerr; | |
603 | return undef; | |
604 | } | |
605 | ||
606 | my $ip = Socket::inet_ntop($family, $packed_ip); | |
607 | if ($ip =~ m/^127\.|^::1$/) { | |
608 | die "hostname lookup failed - got local IP address ($nodename = $ip)\n" if !$noerr; | |
609 | return undef; | |
610 | } | |
611 | ||
612 | return wantarray ? ($ip, $family) : $ip; | |
613 | } | |
614 | ||
615 | sub run_postmap { | |
616 | my ($filename) = @_; | |
617 | ||
618 | # make sure the file exists (else postmap fails) | |
619 | IO::File->new($filename, 'a', 0644); | |
620 | ||
621 | my $mtime_src = (CORE::stat($filename))[9] // | |
622 | die "unbale to read mtime of $filename\n"; | |
623 | ||
624 | my $mtime_dst = (CORE::stat("$filename.db"))[9] // 0; | |
625 | ||
626 | # if not changed, do nothing | |
627 | return if $mtime_src <= $mtime_dst; | |
628 | ||
629 | eval { | |
630 | PVE::Tools::run_command( | |
631 | ['/usr/sbin/postmap', $filename], | |
632 | errmsg => "unable to update postfix table $filename"); | |
633 | }; | |
634 | my $err = $@; | |
635 | ||
636 | warn $err if $err; | |
637 | } | |
638 | ||
639 | sub clamav_dbstat { | |
640 | ||
641 | my $res = []; | |
642 | ||
643 | my $read_cvd_info = sub { | |
644 | my ($dbname, $dbfile) = @_; | |
645 | ||
646 | my $header; | |
647 | my $fh = IO::File->new("<$dbfile"); | |
648 | if (!$fh) { | |
649 | warn "cant open ClamAV Database $dbname ($dbfile) - $!\n"; | |
650 | return; | |
651 | } | |
652 | $fh->read($header, 512); | |
653 | $fh->close(); | |
654 | ||
655 | ## ClamAV-VDB:16 Mar 2016 23-17 +0000:57:4218790:60:06386f34a16ebeea2733ab037f0536be: | |
656 | if ($header =~ m/^(ClamAV-VDB):([^:]+):(\d+):(\d+):/) { | |
657 | my ($ftype, $btime, $version, $nsigs) = ($1, $2, $3, $4); | |
658 | push @$res, { | |
659 | name => $dbname, | |
660 | type => $ftype, | |
661 | build_time => $btime, | |
662 | version => $version, | |
663 | nsigs => $nsigs, | |
664 | }; | |
665 | } else { | |
666 | warn "unable to parse ClamAV Database $dbname ($dbfile)\n"; | |
667 | } | |
668 | }; | |
669 | ||
670 | # main database | |
671 | my $filename = "/var/lib/clamav/main.inc/main.info"; | |
672 | $filename = "/var/lib/clamav/main.cvd" if ! -f $filename; | |
673 | ||
674 | $read_cvd_info->('main', $filename) if -f $filename; | |
675 | ||
676 | # daily database | |
677 | $filename = "/var/lib/clamav/daily.inc/daily.info"; | |
678 | $filename = "/var/lib/clamav/daily.cvd" if ! -f $filename; | |
679 | $filename = "/var/lib/clamav/daily.cld" if ! -f $filename; | |
680 | ||
681 | $read_cvd_info->('daily', $filename) if -f $filename; | |
682 | ||
683 | $filename = "/var/lib/clamav/bytecode.cvd"; | |
684 | $read_cvd_info->('bytecode', $filename) if -f $filename; | |
685 | ||
686 | $filename = "/var/lib/clamav/safebrowsing.cvd"; | |
687 | $read_cvd_info->('safebrowsing', $filename) if -f $filename; | |
688 | ||
689 | my $ss_dbs_fn = "/var/lib/clamav-unofficial-sigs/configs/ss-include-dbs.txt"; | |
690 | my $ss_dbs_files = {}; | |
691 | if (my $ssfh = IO::File->new("<${ss_dbs_fn}")) { | |
692 | while (defined(my $line = <$ssfh>)) { | |
693 | chomp $line; | |
694 | $ss_dbs_files->{$line} = 1; | |
695 | } | |
696 | } | |
697 | my $last = 0; | |
698 | my $nsigs = 0; | |
699 | foreach $filename (</var/lib/clamav/*>) { | |
700 | my $fn = basename($filename); | |
701 | next if !$ss_dbs_files->{$fn}; | |
702 | ||
703 | my $fh = IO::File->new("<$filename"); | |
704 | next if !defined($fh); | |
705 | my $st = stat($fh); | |
706 | next if !$st; | |
707 | my $mtime = $st->mtime(); | |
708 | $last = $mtime if $mtime > $last; | |
709 | while (defined(my $line = <$fh>)) { $nsigs++; } | |
710 | } | |
711 | ||
712 | if ($nsigs > 0) { | |
713 | push @$res, { | |
714 | name => 'sanesecurity', | |
715 | type => 'unofficial', | |
716 | build_time => strftime("%d %b %Y %H-%M %z", localtime($last)), | |
717 | nsigs => $nsigs, | |
718 | }; | |
719 | } | |
720 | ||
721 | return $res; | |
722 | } | |
723 | ||
724 | # RRD related code | |
725 | my $rrd_dir = "/var/lib/rrdcached/db"; | |
726 | my $rrdcached_socket = "/var/run/rrdcached.sock"; | |
727 | ||
728 | my $rrd_def_node = [ | |
729 | "DS:loadavg:GAUGE:120:0:U", | |
730 | "DS:maxcpu:GAUGE:120:0:U", | |
731 | "DS:cpu:GAUGE:120:0:U", | |
732 | "DS:iowait:GAUGE:120:0:U", | |
733 | "DS:memtotal:GAUGE:120:0:U", | |
734 | "DS:memused:GAUGE:120:0:U", | |
735 | "DS:swaptotal:GAUGE:120:0:U", | |
736 | "DS:swapused:GAUGE:120:0:U", | |
737 | "DS:roottotal:GAUGE:120:0:U", | |
738 | "DS:rootused:GAUGE:120:0:U", | |
739 | "DS:netin:DERIVE:120:0:U", | |
740 | "DS:netout:DERIVE:120:0:U", | |
741 | ||
742 | "RRA:AVERAGE:0.5:1:70", # 1 min avg - one hour | |
743 | "RRA:AVERAGE:0.5:30:70", # 30 min avg - one day | |
744 | "RRA:AVERAGE:0.5:180:70", # 3 hour avg - one week | |
745 | "RRA:AVERAGE:0.5:720:70", # 12 hour avg - one month | |
746 | "RRA:AVERAGE:0.5:10080:70", # 7 day avg - ony year | |
747 | ||
748 | "RRA:MAX:0.5:1:70", # 1 min max - one hour | |
749 | "RRA:MAX:0.5:30:70", # 30 min max - one day | |
750 | "RRA:MAX:0.5:180:70", # 3 hour max - one week | |
751 | "RRA:MAX:0.5:720:70", # 12 hour max - one month | |
752 | "RRA:MAX:0.5:10080:70", # 7 day max - ony year | |
753 | ]; | |
754 | ||
755 | sub cond_create_rrd_file { | |
756 | my ($filename, $rrddef) = @_; | |
757 | ||
758 | return if -f $filename; | |
759 | ||
760 | my @args = ($filename); | |
761 | ||
762 | push @args, "--daemon" => "unix:${rrdcached_socket}" | |
763 | if -S $rrdcached_socket; | |
764 | ||
765 | push @args, '--step', 60; | |
766 | ||
767 | push @args, @$rrddef; | |
768 | ||
769 | # print "TEST: " . join(' ', @args) . "\n"; | |
770 | ||
771 | RRDs::create(@args); | |
772 | my $err = RRDs::error; | |
773 | die "RRD error: $err\n" if $err; | |
774 | } | |
775 | ||
776 | sub update_node_status_rrd { | |
777 | ||
778 | my $filename = "$rrd_dir/pmg-node-v1.rrd"; | |
779 | cond_create_rrd_file($filename, $rrd_def_node); | |
780 | ||
781 | my ($avg1, $avg5, $avg15) = PVE::ProcFSTools::read_loadavg(); | |
782 | ||
783 | my $stat = PVE::ProcFSTools::read_proc_stat(); | |
784 | ||
785 | my $netdev = PVE::ProcFSTools::read_proc_net_dev(); | |
786 | ||
787 | my ($uptime) = PVE::ProcFSTools::read_proc_uptime(); | |
788 | ||
789 | my $cpuinfo = PVE::ProcFSTools::read_cpuinfo(); | |
790 | ||
791 | my $maxcpu = $cpuinfo->{cpus}; | |
792 | ||
793 | # traffic from/to physical interface cards | |
794 | my $netin = 0; | |
795 | my $netout = 0; | |
796 | foreach my $dev (keys %$netdev) { | |
797 | next if $dev !~ m/^$PVE::Network::PHYSICAL_NIC_RE$/; | |
798 | $netin += $netdev->{$dev}->{receive}; | |
799 | $netout += $netdev->{$dev}->{transmit}; | |
800 | } | |
801 | ||
802 | my $meminfo = PVE::ProcFSTools::read_meminfo(); | |
803 | ||
804 | my $dinfo = df('/', 1); # output is bytes | |
805 | ||
806 | my $ctime = time(); | |
807 | ||
808 | # everything not free is considered to be used | |
809 | my $dused = $dinfo->{blocks} - $dinfo->{bfree}; | |
810 | ||
811 | my $data = "$ctime:$avg1:$maxcpu:$stat->{cpu}:$stat->{wait}:" . | |
812 | "$meminfo->{memtotal}:$meminfo->{memused}:" . | |
813 | "$meminfo->{swaptotal}:$meminfo->{swapused}:" . | |
814 | "$dinfo->{blocks}:$dused:$netin:$netout"; | |
815 | ||
816 | ||
817 | my @args = ($filename); | |
818 | ||
819 | push @args, "--daemon" => "unix:${rrdcached_socket}" | |
820 | if -S $rrdcached_socket; | |
821 | ||
822 | push @args, $data; | |
823 | ||
824 | # print "TEST: " . join(' ', @args) . "\n"; | |
825 | ||
826 | RRDs::update(@args); | |
827 | my $err = RRDs::error; | |
828 | die "RRD error: $err\n" if $err; | |
829 | } | |
830 | ||
831 | sub create_rrd_data { | |
832 | my ($rrdname, $timeframe, $cf) = @_; | |
833 | ||
834 | my $rrd = "${rrd_dir}/$rrdname"; | |
835 | ||
836 | my $setup = { | |
837 | hour => [ 60, 70 ], | |
838 | day => [ 60*30, 70 ], | |
839 | week => [ 60*180, 70 ], | |
840 | month => [ 60*720, 70 ], | |
841 | year => [ 60*10080, 70 ], | |
842 | }; | |
843 | ||
844 | my ($reso, $count) = @{$setup->{$timeframe}}; | |
845 | my $ctime = $reso*int(time()/$reso); | |
846 | my $req_start = $ctime - $reso*$count; | |
847 | ||
848 | $cf = "AVERAGE" if !$cf; | |
849 | ||
850 | my @args = ( | |
851 | "-s" => $req_start, | |
852 | "-e" => $ctime - 1, | |
853 | "-r" => $reso, | |
854 | ); | |
855 | ||
856 | push @args, "--daemon" => "unix:${rrdcached_socket}" | |
857 | if -S $rrdcached_socket; | |
858 | ||
859 | my ($start, $step, $names, $data) = RRDs::fetch($rrd, $cf, @args); | |
860 | ||
861 | my $err = RRDs::error; | |
862 | die "RRD error: $err\n" if $err; | |
863 | ||
864 | die "got wrong time resolution ($step != $reso)\n" | |
865 | if $step != $reso; | |
866 | ||
867 | my $res = []; | |
868 | my $fields = scalar(@$names); | |
869 | for my $line (@$data) { | |
870 | my $entry = { 'time' => $start }; | |
871 | $start += $step; | |
872 | for (my $i = 0; $i < $fields; $i++) { | |
873 | my $name = $names->[$i]; | |
874 | if (defined(my $val = $line->[$i])) { | |
875 | $entry->{$name} = $val; | |
876 | } else { | |
877 | # leave empty fields undefined | |
878 | # maybe make this configurable? | |
879 | } | |
880 | } | |
881 | push @$res, $entry; | |
882 | } | |
883 | ||
884 | return $res; | |
885 | } | |
886 | ||
887 | sub decode_to_html { | |
888 | my ($charset, $data) = @_; | |
889 | ||
890 | my $res = $data; | |
891 | ||
892 | eval { $res = encode_entities(decode($charset, $data)); }; | |
893 | ||
894 | return $res; | |
895 | } | |
896 | ||
897 | sub decode_rfc1522 { | |
898 | my ($enc) = @_; | |
899 | ||
900 | my $res = ''; | |
901 | ||
902 | return '' if !$enc; | |
903 | ||
904 | eval { | |
905 | foreach my $r (MIME::Words::decode_mimewords($enc)) { | |
906 | my ($d, $cs) = @$r; | |
907 | if ($d) { | |
908 | if ($cs) { | |
909 | $res .= decode($cs, $d); | |
910 | } else { | |
911 | $res .= $d; | |
912 | } | |
913 | } | |
914 | } | |
915 | }; | |
916 | ||
917 | $res = $enc if $@; | |
918 | ||
919 | return $res; | |
920 | } | |
921 | ||
922 | sub rfc1522_to_html { | |
923 | my ($enc) = @_; | |
924 | ||
925 | my $res = ''; | |
926 | ||
927 | return '' if !$enc; | |
928 | ||
929 | eval { | |
930 | foreach my $r (MIME::Words::decode_mimewords($enc)) { | |
931 | my ($d, $cs) = @$r; | |
932 | if ($d) { | |
933 | if ($cs) { | |
934 | $res .= encode_entities(decode($cs, $d)); | |
935 | } else { | |
936 | $res .= encode_entities($d); | |
937 | } | |
938 | } | |
939 | } | |
940 | }; | |
941 | ||
942 | $res = $enc if $@; | |
943 | ||
944 | return $res; | |
945 | } | |
946 | ||
947 | # RFC 2047 B-ENCODING http://rfc.net/rfc2047.html | |
948 | # (Q-Encoding is complex and error prone) | |
949 | sub bencode_header { | |
950 | my $txt = shift; | |
951 | ||
952 | my $CRLF = "\015\012"; | |
953 | ||
954 | # Nonprintables (controls + x7F + 8bit): | |
955 | my $NONPRINT = "\\x00-\\x1F\\x7F-\\xFF"; | |
956 | ||
957 | # always use utf-8 (work with japanese character sets) | |
958 | $txt = encode("UTF-8", $txt); | |
959 | ||
960 | return $txt if $txt !~ /[$NONPRINT]/o; | |
961 | ||
962 | my $res = ''; | |
963 | ||
964 | while ($txt =~ s/^(.{1,42})//sm) { | |
965 | my $t = MIME::Words::encode_mimeword ($1, 'B', 'UTF-8'); | |
966 | $res .= $res ? "\015\012\t$t" : $t; | |
967 | } | |
968 | ||
969 | return $res; | |
970 | } | |
971 | ||
972 | sub load_sa_descriptions { | |
973 | my ($additional_dirs) = @_; | |
974 | ||
975 | my @dirs = ('/usr/share/spamassassin', | |
976 | '/usr/share/spamassassin-extra'); | |
977 | ||
978 | push @dirs, @$additional_dirs if @$additional_dirs; | |
979 | ||
980 | my $res = {}; | |
981 | ||
982 | my $parse_sa_file = sub { | |
983 | my ($file) = @_; | |
984 | ||
985 | open(my $fh,'<', $file); | |
986 | return if !defined($fh); | |
987 | ||
988 | while (defined(my $line = <$fh>)) { | |
989 | if ($line =~ m/^describe\s+(\S+)\s+(.*)\s*$/) { | |
990 | my ($name, $desc) = ($1, $2); | |
991 | next if $res->{$name}; | |
992 | $res->{$name}->{desc} = $desc; | |
993 | if ($desc =~ m|[\(\s](http:\/\/\S+\.[^\s\.\)]+\.[^\s\.\)]+)|i) { | |
994 | $res->{$name}->{url} = $1; | |
995 | } | |
996 | } | |
997 | } | |
998 | close($fh); | |
999 | }; | |
1000 | ||
1001 | foreach my $dir (@dirs) { | |
1002 | foreach my $file (<$dir/*.cf>) { | |
1003 | $parse_sa_file->($file); | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | $res->{'ClamAVHeuristics'}->{desc} = "ClamAV heuristic tests"; | |
1008 | ||
1009 | return $res; | |
1010 | } | |
1011 | ||
1012 | sub format_uptime { | |
1013 | my ($uptime) = @_; | |
1014 | ||
1015 | my $days = int($uptime/86400); | |
1016 | $uptime -= $days*86400; | |
1017 | ||
1018 | my $hours = int($uptime/3600); | |
1019 | $uptime -= $hours*3600; | |
1020 | ||
1021 | my $mins = $uptime/60; | |
1022 | ||
1023 | if ($days) { | |
1024 | my $ds = $days > 1 ? 'days' : 'day'; | |
1025 | return sprintf "%d $ds %02d:%02d", $days, $hours, $mins; | |
1026 | } else { | |
1027 | return sprintf "%02d:%02d", $hours, $mins; | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | sub finalize_report { | |
1032 | my ($tt, $template, $data, $mailfrom, $receiver, $debug) = @_; | |
1033 | ||
1034 | my $html = ''; | |
1035 | ||
1036 | $tt->process($template, $data, \$html) || | |
1037 | die $tt->error() . "\n"; | |
1038 | ||
1039 | my $title; | |
1040 | if ($html =~ m|^\s*<title>(.*)</title>|m) { | |
1041 | $title = $1; | |
1042 | } else { | |
1043 | die "unable to extract template title\n"; | |
1044 | } | |
1045 | ||
1046 | my $top = MIME::Entity->build( | |
1047 | Type => "multipart/related", | |
1048 | To => $data->{pmail}, | |
1049 | From => $mailfrom, | |
1050 | Subject => bencode_header(decode_entities($title))); | |
1051 | ||
1052 | $top->attach( | |
1053 | Data => $html, | |
1054 | Type => "text/html", | |
1055 | Encoding => $debug ? 'binary' : 'quoted-printable'); | |
1056 | ||
1057 | if ($debug) { | |
1058 | $top->print(); | |
1059 | return; | |
1060 | } | |
1061 | # we use an empty envelope sender (we dont want to receive NDRs) | |
1062 | PMG::Utils::reinject_mail ($top, '', [$receiver], undef, $data->{fqdn}); | |
1063 | } | |
1064 | ||
1065 | sub lookup_timespan { | |
1066 | my ($timespan) = @_; | |
1067 | ||
1068 | my (undef, undef, undef, $mday, $mon, $year) = localtime(time()); | |
1069 | my $daystart = timelocal(0, 0, 0, $mday, $mon, $year); | |
1070 | ||
1071 | my $start; | |
1072 | my $end; | |
1073 | ||
1074 | if ($timespan eq 'today') { | |
1075 | $start = $daystart; | |
1076 | $end = $start + 86400; | |
1077 | } elsif ($timespan eq 'yesterday') { | |
1078 | $end = $daystart; | |
1079 | $start = $end - 86400; | |
1080 | } elsif ($timespan eq 'week') { | |
1081 | $end = $daystart; | |
1082 | $start = $end - 7*86400; | |
1083 | } else { | |
1084 | die "internal error"; | |
1085 | } | |
1086 | ||
1087 | return ($start, $end); | |
1088 | } | |
1089 | ||
1090 | my $rbl_scan_last_cursor; | |
1091 | my $rbl_scan_start_time = time(); | |
1092 | ||
1093 | sub scan_journal_for_rbl_rejects { | |
1094 | ||
1095 | # example postscreen log entry for RBL rejects | |
1096 | # Aug 29 08:00:36 proxmox postfix/postscreen[11266]: NOQUEUE: reject: RCPT from [x.x.x.x]:1234: 550 5.7.1 Service unavailable; client [x.x.x.x] blocked using zen.spamhaus.org; from=<xxxx>, to=<yyyy>, proto=ESMTP, helo=<zzz> | |
1097 | ||
1098 | # example for PREGREET reject | |
1099 | # Dec 7 06:57:11 proxmox postfix/postscreen[32084]: PREGREET 14 after 0.23 from [x.x.x.x]:63492: EHLO yyyyy\r\n | |
1100 | ||
1101 | my $identifier = 'postfix/postscreen'; | |
1102 | ||
1103 | my $rbl_count = 0; | |
1104 | my $pregreet_count = 0; | |
1105 | ||
1106 | my $parser = sub { | |
1107 | my $line = shift; | |
1108 | ||
1109 | if ($line =~ m/^--\scursor:\s(\S+)$/) { | |
1110 | $rbl_scan_last_cursor = $1; | |
1111 | return; | |
1112 | } | |
1113 | ||
1114 | if ($line =~ m/\s$identifier\[\d+\]:\sNOQUEUE:\sreject:.*550 5.7.1 Service unavailable;/) { | |
1115 | $rbl_count++; | |
1116 | } elsif ($line =~ m/\s$identifier\[\d+\]:\sPREGREET\s\d+\safter\s/) { | |
1117 | $pregreet_count++; | |
1118 | } | |
1119 | }; | |
1120 | ||
1121 | # limit to last 5000 lines to avoid long delays | |
1122 | my $cmd = ['journalctl', '--show-cursor', '-o', 'short-unix', '--no-pager', | |
1123 | '--identifier', $identifier, '-n', 5000]; | |
1124 | ||
1125 | if (defined($rbl_scan_last_cursor)) { | |
1126 | push @$cmd, "--after-cursor=${rbl_scan_last_cursor}"; | |
1127 | } else { | |
1128 | push @$cmd, "--since=@" . $rbl_scan_start_time; | |
1129 | } | |
1130 | ||
1131 | PVE::Tools::run_command($cmd, outfunc => $parser); | |
1132 | ||
1133 | return ($rbl_count, $pregreet_count); | |
1134 | } | |
1135 | ||
1136 | my $hwaddress; | |
1137 | ||
1138 | sub get_hwaddress { | |
1139 | ||
1140 | return $hwaddress if defined ($hwaddress); | |
1141 | ||
1142 | my $fn = '/etc/ssh/ssh_host_rsa_key.pub'; | |
1143 | my $sshkey = PVE::Tools::file_get_contents($fn); | |
1144 | $hwaddress = uc(Digest::MD5::md5_hex($sshkey)); | |
1145 | ||
1146 | return $hwaddress; | |
1147 | } | |
1148 | ||
1149 | my $default_locale = "en_US.UTF-8 UTF-8"; | |
1150 | ||
1151 | sub cond_add_default_locale { | |
1152 | ||
1153 | my $filename = "/etc/locale.gen"; | |
1154 | ||
1155 | open(my $infh, "<", $filename) || return; | |
1156 | ||
1157 | while (defined(my $line = <$infh>)) { | |
1158 | if ($line =~ m/^\Q${default_locale}\E/) { | |
1159 | # already configured | |
1160 | return; | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | seek($infh, 0, 0) // return; # seek failed | |
1165 | ||
1166 | open(my $outfh, ">", "$filename.tmp") || return; | |
1167 | ||
1168 | my $done; | |
1169 | while (defined(my $line = <$infh>)) { | |
1170 | if ($line =~ m/^#\s*\Q${default_locale}\E.*/) { | |
1171 | print $outfh "${default_locale}\n" if !$done; | |
1172 | $done = 1; | |
1173 | } else { | |
1174 | print $outfh $line; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | print STDERR "generation pmg default locale\n"; | |
1179 | ||
1180 | rename("$filename.tmp", $filename) || return; # rename failed | |
1181 | ||
1182 | system("dpkg-reconfigure locales -f noninteractive"); | |
1183 | } | |
1184 | ||
1185 | 1; |