experimental code to read existing chains and compute SHA1 checksum
[pve-firewall.git] / PVE / Firewall.pm
CommitLineData
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1package PVE::Firewall;
2
3use warnings;
4use strict;
5use Data::Dumper;
de2a57cd 6use Digest::SHA;
f789653a 7use PVE::Tools;
b6360c3f 8use PVE::QemuServer;
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9use File::Path;
10use IO::File;
ecbea048 11use Net::IP;
06320eb0 12use PVE::Tools qw(run_command lock_file);
ecbea048 13
5e1267a5 14use Data::Dumper;
b6360c3f 15
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16my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
17
9aab3127 18my $macros;
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19my @ruleset = ();
20
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21# todo: implement some kind of MACROS, like shorewall /usr/share/shorewall/macro.*
22sub get_firewall_macros {
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23
24 return $macros if $macros;
25
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26 #foreach my $path (</usr/share/shorewall/macro.*>) {
27 # if ($path =~ m|/macro\.(\S+)$|) {
28 # $macros->{$1} = 1;
29 # }
30 #}
31
32 $macros = {}; # fixme: implemet me
33
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34 return $macros;
35}
36
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37my $etc_services;
38
39sub get_etc_services {
40
41 return $etc_services if $etc_services;
42
43 my $filename = "/etc/services";
44
45 my $fh = IO::File->new($filename, O_RDONLY);
46 if (!$fh) {
47 warn "unable to read '$filename' - $!\n";
48 return {};
49 }
50
51 my $services = {};
52
53 while (my $line = <$fh>) {
54 chomp ($line);
55 next if $line =~m/^#/;
56 next if ($line =~m/^\s*$/);
57
58 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
59 $services->{byid}->{$2}->{name} = $1;
60 $services->{byid}->{$2}->{$3} = 1;
61 $services->{byname}->{$1} = $services->{byid}->{$2};
62 }
63 }
64
65 close($fh);
66
67 $etc_services = $services;
68
3a616aa0 69
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70 return $etc_services;
71}
72
73my $etc_protocols;
74
75sub get_etc_protocols {
76 return $etc_protocols if $etc_protocols;
77
78 my $filename = "/etc/protocols";
79
80 my $fh = IO::File->new($filename, O_RDONLY);
81 if (!$fh) {
82 warn "unable to read '$filename' - $!\n";
83 return {};
84 }
85
86 my $protocols = {};
87
88 while (my $line = <$fh>) {
89 chomp ($line);
90 next if $line =~m/^#/;
91 next if ($line =~m/^\s*$/);
92
93 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
94 $protocols->{byid}->{$2}->{name} = $1;
95 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
96 }
97 }
98
99 close($fh);
100
101 $etc_protocols = $protocols;
102
103 return $etc_protocols;
104}
105
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106sub parse_address_list {
107 my ($str) = @_;
108
d6de1dc2 109 my $nbaor = 0;
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110 foreach my $aor (split(/,/, $str)) {
111 if (!Net::IP->new($aor)) {
112 my $err = Net::IP::Error();
113 die "invalid IP address: $err\n";
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114 }else{
115 $nbaor++;
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116 }
117 }
d6de1dc2 118 return $nbaor;
ecbea048 119}
dddd9413 120
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121sub parse_port_name_number_or_range {
122 my ($str) = @_;
123
124 my $services = PVE::Firewall::get_etc_services();
4cdbb3b7 125 my $nbports = 0;
fcba0beb 126 foreach my $item (split(/,/, $str)) {
4cdbb3b7 127 my $portlist = "";
fcba0beb 128 foreach my $pon (split(':', $item, 2)) {
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129 if ($pon =~ m/^\d+$/){
130 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65536;
131 }else{
132 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon};
133 }
134 $nbports++;
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135 }
136 }
137
4cdbb3b7 138 return ($nbports);
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139}
140
8cebfa6f 141my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 142
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143sub iptables {
144 my ($cmd) = @_;
145
146 run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {});
147}
148
149sub iptables_restore {
150
151 unshift (@ruleset, '*filter');
152 push (@ruleset, 'COMMIT');
153
64568ce0 154 my $cmdlist = join("\n", @ruleset) . "\n";
3a616aa0 155
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156 my $verbose = 1; # fixme: how/when do we set this
157
158 #run_command("echo '$cmdlist' | /sbin/iptables-restore -n");
159 eval { run_command("/sbin/iptables-restore -n ", input => $cmdlist); };
160 if (my $err = $@) {
161 print STDERR $cmdlist if $verbose;
162 die $err;
163 }
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164}
165
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166# experimental code to read existing chains and compute SHA1 checksum
167# for each chain.
168sub iptables_get_chains {
169
170 my $res = {};
171
172 # check what chains we want to track
173 my $is_pvefw_chain = sub {
174 my $name = shift;
175
176 return 1 if $name =~ m/^BRIDGEFW-(:?IN|OUT)$/;
177 return 1 if $name =~ m/^proxmoxfw-\S+$/;
178 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
179
180 return undef;
181 };
182
183 my $table = '';
184
185 my $dhash = {};
186
187 my $parser = sub {
188 my $line = shift;
189
190 return if $line =~ m/^#/;
191 return if $line =~ m/^\s*$/;
192
193 if ($line =~ m/^\*(\S+)$/) {
194 $table = $1;
195 return;
196 }
197
198 return if $table ne 'filter';
199
200 if ($line =~ m/^:(\S+)\s/) {
201 my $chain = $1;
202 return if !&$is_pvefw_chain($chain);
203 $dhash->{$chain} = Digest::SHA->new('sha1');
204 } elsif ($line =~ m/^-([A-Z]) (\S+)\s/) {
205 my $chain = $2;
206 return if !&$is_pvefw_chain($chain);
207 my $sha = $dhash->{$chain} || die "undefined chain '$chain'";
208 $sha->add_bits("$line\n");
209 } else {
210 # simply ignore the rest
211 return;
212 }
213 };
214
215 run_command("/sbin/iptables-save", outfunc => $parser);
216
217 foreach my $chain (keys %$dhash) {
218 my $sha = $dhash->{$chain};
219 $res->{$chain} = $sha->b64digest;
220 }
221
222 return $res;
223}
224
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225sub iptables_addrule {
226 my ($rule) = @_;
227
228 push (@ruleset, $rule);
229}
230
231sub iptables_chain_exist {
232 my ($chain) = @_;
233
234 eval{
235 iptables("-n --list $chain");
236 };
237 return undef if $@;
238
239 return 1;
240}
241
242sub iptables_rule_exist {
243 my ($rule) = @_;
244
245 eval{
246 iptables("-C $rule");
247 };
248 return undef if $@;
249
250 return 1;
251}
252
253sub iptables_generate_rule {
254 my ($chain, $rule) = @_;
255
256 my $cmd = "-A $chain";
257
d6de1dc2 258 $cmd .= " -m iprange --src-range" if $rule->{nbsource} && $rule->{nbsource} > 1;
3a616aa0 259 $cmd .= " -s $rule->{source}" if $rule->{source};
d6de1dc2 260 $cmd .= " -m iprange --dst-range" if $rule->{nbdest} && $rule->{nbdest} > 1;
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261 $cmd .= " -d $rule->{dest}" if $rule->{destination};
262 $cmd .= " -p $rule->{proto}" if $rule->{proto};
4cdbb3b7 263 $cmd .= " --match multiport" if $rule->{nbdport} && $rule->{nbdport} > 1;
3a616aa0 264 $cmd .= " --dport $rule->{dport}" if $rule->{dport};
4cdbb3b7 265 $cmd .= " --match multiport" if $rule->{nbsport} && $rule->{nbsport} > 1;
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266 $cmd .= " --sport $rule->{sport}" if $rule->{sport};
267 $cmd .= " -j $rule->{action}" if $rule->{action};
268
269 iptables_addrule($cmd);
270
271}
272
273sub generate_bridge_rules {
274 my ($bridge) = @_;
275
276 if(!iptables_chain_exist("BRIDGEFW-OUT")){
277 iptables_addrule(":BRIDGEFW-OUT - [0:0]");
278 }
279
280 if(!iptables_chain_exist("BRIDGEFW-IN")){
281 iptables_addrule(":BRIDGEFW-IN - [0:0]");
282 }
283
284 if(!iptables_chain_exist("proxmoxfw-FORWARD")){
285 iptables_addrule(":proxmoxfw-FORWARD - [0:0]");
286 iptables_addrule("-I FORWARD -j proxmoxfw-FORWARD");
287 iptables_addrule("-A proxmoxfw-FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT");
288 iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-in --physdev-is-bridged -j BRIDGEFW-OUT");
289 iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-out --physdev-is-bridged -j BRIDGEFW-IN");
290
291 }
292
293 generate_proxmoxfwinput();
294
295 if(!iptables_chain_exist("$bridge-IN")){
296 iptables_addrule(":$bridge-IN - [0:0]");
297 iptables_addrule("-A proxmoxfw-FORWARD -i $bridge -j DROP"); #disable interbridge routing
298 iptables_addrule("-A BRIDGEFW-IN -j $bridge-IN");
299 iptables_addrule("-A $bridge-IN -j ACCEPT");
300
301 }
302
303 if(!iptables_chain_exist("$bridge-OUT")){
304 iptables_addrule(":$bridge-OUT - [0:0]");
305 iptables_addrule("-A proxmoxfw-FORWARD -o $bridge -j DROP"); # disable interbridge routing
306 iptables_addrule("-A BRIDGEFW-OUT -j $bridge-OUT");
307
308 }
309
310}
311
312
313sub generate_tap_rules_direction {
314 my ($iface, $netid, $rules, $bridge, $direction) = @_;
315
316 my $tapchain = "$iface-$direction";
317
318 iptables_addrule(":$tapchain - [0:0]");
319
320 iptables_addrule("-A $tapchain -m state --state INVALID -j DROP");
321 iptables_addrule("-A $tapchain -m state --state RELATED,ESTABLISHED -j ACCEPT");
322
323 if (scalar(@$rules)) {
324 foreach my $rule (@$rules) {
325 next if $rule->{iface} && $rule->{iface} ne $netid;
326 if($rule->{action} =~ m/^(GROUP-(\S+))$/){
327 $rule->{action} .= "-$direction";
328 #generate empty group rule if don't exist
329 if(!iptables_chain_exist($rule->{action})){
330 generate_group_rules($2);
331 }
332 }
333 #we go to vmbr-IN if accept in out rules
334 $rule->{action} = "$bridge-IN" if $rule->{action} eq 'ACCEPT' && $direction eq 'OUT';
335 iptables_generate_rule($tapchain, $rule);
336 }
337 }
338
339 iptables_addrule("-A $tapchain -j LOG --log-prefix \"$tapchain-dropped: \" --log-level 4");
340 iptables_addrule("-A $tapchain -j DROP");
341
342 #plug the tap chain to bridge chain
343 my $physdevdirection = $direction eq 'IN' ? "out":"in";
344 my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
345
346 if(!iptables_rule_exist($rule)){
347 iptables_addrule("-I $rule");
348 }
349
350 if($direction eq 'OUT'){
351 #add tap->host rules
352 my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain";
353
354 if(!iptables_rule_exist($rule)){
355 iptables_addrule("-A $rule");
356 }
357 }
358}
359
360sub generate_tap_rules {
361 my ($net, $netid, $vmid) = @_;
362
363 my $filename = "/etc/pve/firewall/$vmid.fw";
364 my $fh = IO::File->new($filename, O_RDONLY);
365 return if !$fh;
366
367 #generate bridge rules
368 my $bridge = $net->{bridge};
369 my $tag = $net->{tag};
370 $bridge .= "v$tag" if $tag;
371
372 #generate tap chain
373 my $rules = parse_fw_rules($filename, $fh);
374
375 my $inrules = $rules->{in};
376 my $outrules = $rules->{out};
377
378 my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/;
379
380 generate_bridge_rules($bridge);
381 generate_tap_rules_direction($iface, $netid, $inrules, $bridge, 'IN');
382 generate_tap_rules_direction($iface, $netid, $outrules, $bridge, 'OUT');
383 iptables_restore();
384}
385
386sub flush_tap_rules {
387 my ($net, $netid, $vmid) = @_;
388
389 my $bridge = $net->{bridge};
390 my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/;
391
392 flush_tap_rules_direction($iface, $bridge, 'IN');
393 flush_tap_rules_direction($iface, $bridge, 'OUT');
394 iptables_restore();
395}
396
397sub flush_tap_rules_direction {
398 my ($iface, $bridge, $direction) = @_;
399
400 my $tapchain = "$iface-$direction";
401
402 if(iptables_chain_exist($tapchain)){
403 iptables_addrule("-F $tapchain");
404
405 my $physdevdirection = $direction eq 'IN' ? "out":"in";
406 my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
407 if(iptables_rule_exist($rule)){
408 iptables_addrule("-D $rule");
409 }
410
411 if($direction eq 'OUT'){
412 my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain";
462a6553 413 if(iptables_rule_exist($rule)){
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414 iptables_addrule("-D $rule");
415 }
416 }
417
418 iptables_addrule("-X $tapchain");
419 }
420}
421
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422sub enablehostfw {
423
424 generate_proxmoxfwinput();
425 generate_proxmoxfwoutput();
426
427 my $filename = "/etc/pve/local/host.fw";
428 my $fh = IO::File->new($filename, O_RDONLY);
429 return if !$fh;
430
431 my $rules = parse_fw_rules($filename, $fh);
432 my $inrules = $rules->{in};
433 my $outrules = $rules->{out};
434
435 #host inbound firewall
436 iptables_addrule(":host-IN - [0:0]");
437 iptables_addrule("-A host-IN -m state --state INVALID -j DROP");
438 iptables_addrule("-A host-IN -m state --state RELATED,ESTABLISHED -j ACCEPT");
439 iptables_addrule("-A host-IN -i lo -j ACCEPT");
440 iptables_addrule("-A host-IN -m addrtype --dst-type MULTICAST -j ACCEPT");
441 iptables_addrule("-A host-IN -p udp -m state --state NEW -m multiport --dports 5404,5405 -j ACCEPT");
442 iptables_addrule("-A host-IN -p udp -m udp --dport 9000 -j ACCEPT"); #corosync
443
444 if (scalar(@$inrules)) {
445 foreach my $rule (@$inrules) {
446 #we use RETURN because we need to check also tap rules
447 $rule->{action} = 'RETURN' if $rule->{action} eq 'ACCEPT';
448 iptables_generate_rule('host-IN', $rule);
449 }
450 }
451
452 iptables_addrule("-A host-IN -j LOG --log-prefix \"kvmhost-IN dropped: \" --log-level 4");
453 iptables_addrule("-A host-IN -j DROP");
454
455 #host outbound firewall
456 iptables_addrule(":host-OUT - [0:0]");
457 iptables_addrule("-A host-OUT -m state --state INVALID -j DROP");
458 iptables_addrule("-A host-OUT -m state --state RELATED,ESTABLISHED -j ACCEPT");
459 iptables_addrule("-A host-OUT -o lo -j ACCEPT");
460 iptables_addrule("-A host-OUT -m addrtype --dst-type MULTICAST -j ACCEPT");
461 iptables_addrule("-A host-OUT -p udp -m state --state NEW -m multiport --dports 5404,5405 -j ACCEPT");
462 iptables_addrule("-A host-OUT -p udp -m udp --dport 9000 -j ACCEPT"); #corosync
463
464 if (scalar(@$outrules)) {
465 foreach my $rule (@$outrules) {
466 #we use RETURN because we need to check also tap rules
467 $rule->{action} = 'RETURN' if $rule->{action} eq 'ACCEPT';
468 iptables_generate_rule('host-OUT', $rule);
469 }
470 }
471
472 iptables_addrule("-A host-OUT -j LOG --log-prefix \"kvmhost-OUT dropped: \" --log-level 4");
473 iptables_addrule("-A host-OUT -j DROP");
474
475
476 my $rule = "proxmoxfw-INPUT -j host-IN";
477 if(!iptables_rule_exist($rule)){
478 iptables_addrule("-I $rule");
479 }
480
481 $rule = "proxmoxfw-OUTPUT -j host-OUT";
482 if(!iptables_rule_exist($rule)){
483 iptables_addrule("-I $rule");
484 }
485
486 iptables_restore();
487
488
489}
490
491sub disablehostfw {
492
493 my $chain = "host-IN";
494
495 my $rule = "proxmoxfw-INPUT -j $chain";
496 if(iptables_rule_exist($rule)){
497 iptables_addrule("-D $rule");
498 }
499
500 if(iptables_chain_exist($chain)){
501 iptables_addrule("-F $chain");
502 iptables_addrule("-X $chain");
503 }
504
505 $chain = "host-OUT";
506
507 $rule = "proxmoxfw-OUTPUT -j $chain";
508 if(iptables_rule_exist($rule)){
509 iptables_addrule("-D $rule");
510 }
511
512 if(iptables_chain_exist($chain)){
513 iptables_addrule("-F $chain");
514 iptables_addrule("-X $chain");
515 }
516
517 iptables_restore();
518}
519
520sub generate_proxmoxfwinput {
521
522 if(!iptables_chain_exist("proxmoxfw-INPUT")){
523 iptables_addrule(":proxmoxfw-INPUT - [0:0]");
524 iptables_addrule("-I INPUT -j proxmoxfw-INPUT");
525 iptables_addrule("-A INPUT -j ACCEPT");
526 }
527}
528
529sub generate_proxmoxfwoutput {
530
531 if(!iptables_chain_exist("proxmoxfw-OUTPUT")){
532 iptables_addrule(":proxmoxfw-OUTPUT - [0:0]");
533 iptables_addrule("-I OUTPUT -j proxmoxfw-OUTPUT");
534 iptables_addrule("-A OUTPUT -j ACCEPT");
535 }
536
537}
538
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539sub enable_group_rules {
540 my ($group) = @_;
541
542 generate_group_rules($group);
543 iptables_restore();
544}
545
546sub generate_group_rules {
547 my ($group) = @_;
548
549 my $filename = "/etc/pve/firewall/groups.fw";
550 my $fh = IO::File->new($filename, O_RDONLY);
551 return if !$fh;
552
553 my $rules = parse_fw_rules($filename, $fh, $group);
554 my $inrules = $rules->{in};
555 my $outrules = $rules->{out};
556
557 my $chain = "GROUP-".$group."-IN";
558
559 iptables_addrule(":$chain - [0:0]");
560
561 if (scalar(@$inrules)) {
562 foreach my $rule (@$inrules) {
563 iptables_generate_rule($chain, $rule);
564 }
565 }
566
567 $chain = "GROUP-".$group."-OUT";
568
569 iptables_addrule(":$chain - [0:0]");
570
571 if(!iptables_chain_exist("BRIDGEFW-OUT")){
572 iptables_addrule(":BRIDGEFW-OUT - [0:0]");
573 }
574
575 if(!iptables_chain_exist("BRIDGEFW-IN")){
576 iptables_addrule(":BRIDGEFW-IN - [0:0]");
577 }
578
579 if (scalar(@$outrules)) {
580 foreach my $rule (@$outrules) {
581 #we go the BRIDGEFW-IN because we need to check also other tap rules
582 #(and group rules can be set on any bridge, so we can't go to VMBRXX-IN)
583 $rule->{action} = 'BRIDGEFW-IN' if $rule->{action} eq 'ACCEPT';
584 iptables_generate_rule($chain, $rule);
585 }
586 }
587
588}
589
590sub disable_group_rules {
591 my ($group) = @_;
592
593 my $chain = "GROUP-".$group."-IN";
594
595 if(iptables_chain_exist($chain)){
596 iptables_addrule("-F $chain");
597 iptables_addrule("-X $chain");
598 }
599
600 $chain = "GROUP-".$group."-OUT";
601
602 if(iptables_chain_exist($chain)){
603 iptables_addrule("-F $chain");
604 iptables_addrule("-X $chain");
605 }
606
607 #iptables_restore will die if security group is linked in a tap chain
608 #maybe can we improve that, parsing each vm config, or parsing iptables -S
609 #to see if the security group is linked or not
610 iptables_restore();
611}
612
5e1267a5 613sub parse_fw_rules {
9d31b418 614 my ($filename, $fh, $group) = @_;
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615
616 my $section;
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617 my $securitygroup;
618 my $securitygroupexist;
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619
620 my $res = { in => [], out => [] };
621
a332200b 622 my $macros = get_firewall_macros();
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623 my $protocols = get_etc_protocols();
624
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625 while (defined(my $line = <$fh>)) {
626 next if $line =~ m/^#/;
627 next if $line =~ m/^\s*$/;
628
9d31b418 629 if ($line =~ m/^\[(in|out)(:(\S+))?\]\s*$/i) {
5e1267a5 630 $section = lc($1);
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631 $securitygroup = lc($3) if $3;
632 $securitygroupexist = 1 if $securitygroup && $securitygroup eq $group;
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633 next;
634 }
635 next if !$section;
9d31b418 636 next if $group && $securitygroup ne $group;
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637
638 my ($action, $iface, $source, $dest, $proto, $dport, $sport) =
639 split(/\s+/, $line);
640
641 if (!$action) {
642 warn "skip incomplete line\n";
643 next;
644 }
645
646 my $service;
3a616aa0 647 if ($action =~ m/^(ACCEPT|DROP|REJECT|GROUP-(\S+))$/) {
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648 # OK
649 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
650 ($service, $action) = ($1, $2);
651 if (!$macros->{$service}) {
652 warn "unknown service '$service'\n";
653 next;
654 }
655 } else {
656 warn "unknown action '$action'\n";
657 next;
658 }
659
660 $iface = undef if $iface && $iface eq '-';
661 if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) {
662 warn "unknown interface '$iface'\n";
663 next;
664 }
665
666 $proto = undef if $proto && $proto eq '-';
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667 if ($proto && !(defined($protocols->{byname}->{$proto}) ||
668 defined($protocols->{byid}->{$proto}))) {
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669 warn "unknown protokol '$proto'\n";
670 next;
671 }
672
673 $source = undef if $source && $source eq '-';
5e1267a5 674 $dest = undef if $dest && $dest eq '-';
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675
676 $dport = undef if $dport && $dport eq '-';
677 $sport = undef if $sport && $sport eq '-';
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678 my $nbdport = undef;
679 my $nbsport = undef;
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680 my $nbsource = undef;
681 my $nbdest = undef;
5e1267a5 682
ecbea048 683 eval {
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684 $nbsource = parse_address_list($source) if $source;
685 $nbdest = parse_address_list($dest) if $dest;
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686 $nbdport = parse_port_name_number_or_range($dport) if $dport;
687 $nbsport = parse_port_name_number_or_range($sport) if $sport;
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688 };
689 if (my $err = $@) {
690 warn $err;
691 next;
692
693 }
694
695
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696 my $rule = {
697 action => $action,
698 service => $service,
699 iface => $iface,
700 source => $source,
701 dest => $dest,
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702 nbsource => $nbsource,
703 nbdest => $nbdest,
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704 proto => $proto,
705 dport => $dport,
706 sport => $sport,
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707 nbdport => $nbdport,
708 nbsport => $nbsport,
709
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710 };
711
712 push @{$res->{$section}}, $rule;
713 }
714
9d31b418 715 die "security group $group don't exist" if $group && !$securitygroupexist;
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716 return $res;
717}
718
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719sub run_locked {
720 my ($code, @param) = @_;
721
722 my $timeout = 10;
723
724 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
725
726 die $@ if $@;
727
728 return $res;
729}
730
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731sub read_local_vm_config {
732
733 my $openvz = {};
734
735 my $qemu = {};
736
737 my $list = PVE::QemuServer::config_list();
738
739 foreach my $vmid (keys %$list) {
b9b06789 740 #next if !($vmid eq '100' || $vmid eq '102');
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741 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
742 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
743 $qemu->{$vmid} = $conf;
744 }
745 }
746
747 my $vmdata = { openvz => $openvz, qemu => $qemu };
748
749 return $vmdata;
750};
751
752sub read_vm_firewall_rules {
753 my ($vmdata) = @_;
754 my $rules = {};
755 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
756 my $filename = "/etc/pve/firewall/$vmid.fw";
757 my $fh = IO::File->new($filename, O_RDONLY);
758 next if !$fh;
759
760 $rules->{$vmid} = parse_fw_rules($filename, $fh);
761 }
762
763 return $rules;
764}
765
766sub compile {
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767 my $vmdata = read_local_vm_config();
768 my $rules = read_vm_firewall_rules($vmdata);
769
770 # print Dumper($vmdata);
771
a332200b 772 die "implement me";
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773}
774
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775sub compile_and_start {
776 my ($restart) = @_;
886aba9c 777
5e1267a5 778 compile();
b6360c3f 779
a332200b 780 die "implement me";
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781}
782
b6360c3f 7831;