add src and destination range
[pve-firewall.git] / PVE / Firewall.pm
CommitLineData
b6360c3f
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1package PVE::Firewall;
2
3use warnings;
4use strict;
5use Data::Dumper;
f789653a 6use PVE::Tools;
b6360c3f 7use PVE::QemuServer;
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8use File::Path;
9use IO::File;
ecbea048 10use Net::IP;
3a616aa0 11use PVE::Tools qw(run_command);
ecbea048 12
5e1267a5 13use Data::Dumper;
b6360c3f 14
9aab3127 15my $macros;
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16my @ruleset = ();
17
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18sub get_shorewall_macros {
19
20 return $macros if $macros;
21
22 foreach my $path (</usr/share/shorewall/macro.*>) {
23 if ($path =~ m|/macro\.(\S+)$|) {
24 $macros->{$1} = 1;
25 }
26 }
27 return $macros;
28}
29
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30my $etc_services;
31
32sub get_etc_services {
33
34 return $etc_services if $etc_services;
35
36 my $filename = "/etc/services";
37
38 my $fh = IO::File->new($filename, O_RDONLY);
39 if (!$fh) {
40 warn "unable to read '$filename' - $!\n";
41 return {};
42 }
43
44 my $services = {};
45
46 while (my $line = <$fh>) {
47 chomp ($line);
48 next if $line =~m/^#/;
49 next if ($line =~m/^\s*$/);
50
51 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
52 $services->{byid}->{$2}->{name} = $1;
53 $services->{byid}->{$2}->{$3} = 1;
54 $services->{byname}->{$1} = $services->{byid}->{$2};
55 }
56 }
57
58 close($fh);
59
60 $etc_services = $services;
61
3a616aa0 62
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63 return $etc_services;
64}
65
66my $etc_protocols;
67
68sub get_etc_protocols {
69 return $etc_protocols if $etc_protocols;
70
71 my $filename = "/etc/protocols";
72
73 my $fh = IO::File->new($filename, O_RDONLY);
74 if (!$fh) {
75 warn "unable to read '$filename' - $!\n";
76 return {};
77 }
78
79 my $protocols = {};
80
81 while (my $line = <$fh>) {
82 chomp ($line);
83 next if $line =~m/^#/;
84 next if ($line =~m/^\s*$/);
85
86 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
87 $protocols->{byid}->{$2}->{name} = $1;
88 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
89 }
90 }
91
92 close($fh);
93
94 $etc_protocols = $protocols;
95
96 return $etc_protocols;
97}
98
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99sub parse_address_list {
100 my ($str) = @_;
101
d6de1dc2 102 my $nbaor = 0;
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103 foreach my $aor (split(/,/, $str)) {
104 if (!Net::IP->new($aor)) {
105 my $err = Net::IP::Error();
106 die "invalid IP address: $err\n";
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107 }else{
108 $nbaor++;
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109 }
110 }
d6de1dc2 111 return $nbaor;
ecbea048 112}
dddd9413 113
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114sub parse_port_name_number_or_range {
115 my ($str) = @_;
116
117 my $services = PVE::Firewall::get_etc_services();
4cdbb3b7 118 my $nbports = 0;
fcba0beb 119 foreach my $item (split(/,/, $str)) {
4cdbb3b7 120 my $portlist = "";
fcba0beb 121 foreach my $pon (split(':', $item, 2)) {
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122 if ($pon =~ m/^\d+$/){
123 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65536;
124 }else{
125 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon};
126 }
127 $nbports++;
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128 }
129 }
130
4cdbb3b7 131 return ($nbports);
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132}
133
8cebfa6f 134my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 135
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136sub iptables {
137 my ($cmd) = @_;
138
139 run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {});
140}
141
142sub iptables_restore {
143
144 unshift (@ruleset, '*filter');
145 push (@ruleset, 'COMMIT');
146
147 my $cmdlist = join("\n", @ruleset);
148
149 run_command("echo '$cmdlist' | /sbin/iptables-restore -n", outfunc => sub {});
150}
151
152sub iptables_addrule {
153 my ($rule) = @_;
154
155 push (@ruleset, $rule);
156}
157
158sub iptables_chain_exist {
159 my ($chain) = @_;
160
161 eval{
162 iptables("-n --list $chain");
163 };
164 return undef if $@;
165
166 return 1;
167}
168
169sub iptables_rule_exist {
170 my ($rule) = @_;
171
172 eval{
173 iptables("-C $rule");
174 };
175 return undef if $@;
176
177 return 1;
178}
179
180sub iptables_generate_rule {
181 my ($chain, $rule) = @_;
182
183 my $cmd = "-A $chain";
184
d6de1dc2 185 $cmd .= " -m iprange --src-range" if $rule->{nbsource} && $rule->{nbsource} > 1;
3a616aa0 186 $cmd .= " -s $rule->{source}" if $rule->{source};
d6de1dc2 187 $cmd .= " -m iprange --dst-range" if $rule->{nbdest} && $rule->{nbdest} > 1;
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188 $cmd .= " -d $rule->{dest}" if $rule->{destination};
189 $cmd .= " -p $rule->{proto}" if $rule->{proto};
4cdbb3b7 190 $cmd .= " --match multiport" if $rule->{nbdport} && $rule->{nbdport} > 1;
3a616aa0 191 $cmd .= " --dport $rule->{dport}" if $rule->{dport};
4cdbb3b7 192 $cmd .= " --match multiport" if $rule->{nbsport} && $rule->{nbsport} > 1;
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193 $cmd .= " --sport $rule->{sport}" if $rule->{sport};
194 $cmd .= " -j $rule->{action}" if $rule->{action};
195
196 iptables_addrule($cmd);
197
198}
199
200sub generate_bridge_rules {
201 my ($bridge) = @_;
202
203 if(!iptables_chain_exist("BRIDGEFW-OUT")){
204 iptables_addrule(":BRIDGEFW-OUT - [0:0]");
205 }
206
207 if(!iptables_chain_exist("BRIDGEFW-IN")){
208 iptables_addrule(":BRIDGEFW-IN - [0:0]");
209 }
210
211 if(!iptables_chain_exist("proxmoxfw-FORWARD")){
212 iptables_addrule(":proxmoxfw-FORWARD - [0:0]");
213 iptables_addrule("-I FORWARD -j proxmoxfw-FORWARD");
214 iptables_addrule("-A proxmoxfw-FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT");
215 iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-in --physdev-is-bridged -j BRIDGEFW-OUT");
216 iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-out --physdev-is-bridged -j BRIDGEFW-IN");
217
218 }
219
220 generate_proxmoxfwinput();
221
222 if(!iptables_chain_exist("$bridge-IN")){
223 iptables_addrule(":$bridge-IN - [0:0]");
224 iptables_addrule("-A proxmoxfw-FORWARD -i $bridge -j DROP"); #disable interbridge routing
225 iptables_addrule("-A BRIDGEFW-IN -j $bridge-IN");
226 iptables_addrule("-A $bridge-IN -j ACCEPT");
227
228 }
229
230 if(!iptables_chain_exist("$bridge-OUT")){
231 iptables_addrule(":$bridge-OUT - [0:0]");
232 iptables_addrule("-A proxmoxfw-FORWARD -o $bridge -j DROP"); # disable interbridge routing
233 iptables_addrule("-A BRIDGEFW-OUT -j $bridge-OUT");
234
235 }
236
237}
238
239
240sub generate_tap_rules_direction {
241 my ($iface, $netid, $rules, $bridge, $direction) = @_;
242
243 my $tapchain = "$iface-$direction";
244
245 iptables_addrule(":$tapchain - [0:0]");
246
247 iptables_addrule("-A $tapchain -m state --state INVALID -j DROP");
248 iptables_addrule("-A $tapchain -m state --state RELATED,ESTABLISHED -j ACCEPT");
249
250 if (scalar(@$rules)) {
251 foreach my $rule (@$rules) {
252 next if $rule->{iface} && $rule->{iface} ne $netid;
253 if($rule->{action} =~ m/^(GROUP-(\S+))$/){
254 $rule->{action} .= "-$direction";
255 #generate empty group rule if don't exist
256 if(!iptables_chain_exist($rule->{action})){
257 generate_group_rules($2);
258 }
259 }
260 #we go to vmbr-IN if accept in out rules
261 $rule->{action} = "$bridge-IN" if $rule->{action} eq 'ACCEPT' && $direction eq 'OUT';
262 iptables_generate_rule($tapchain, $rule);
263 }
264 }
265
266 iptables_addrule("-A $tapchain -j LOG --log-prefix \"$tapchain-dropped: \" --log-level 4");
267 iptables_addrule("-A $tapchain -j DROP");
268
269 #plug the tap chain to bridge chain
270 my $physdevdirection = $direction eq 'IN' ? "out":"in";
271 my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
272
273 if(!iptables_rule_exist($rule)){
274 iptables_addrule("-I $rule");
275 }
276
277 if($direction eq 'OUT'){
278 #add tap->host rules
279 my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain";
280
281 if(!iptables_rule_exist($rule)){
282 iptables_addrule("-A $rule");
283 }
284 }
285}
286
287sub generate_tap_rules {
288 my ($net, $netid, $vmid) = @_;
289
290 my $filename = "/etc/pve/firewall/$vmid.fw";
291 my $fh = IO::File->new($filename, O_RDONLY);
292 return if !$fh;
293
294 #generate bridge rules
295 my $bridge = $net->{bridge};
296 my $tag = $net->{tag};
297 $bridge .= "v$tag" if $tag;
298
299 #generate tap chain
300 my $rules = parse_fw_rules($filename, $fh);
301
302 my $inrules = $rules->{in};
303 my $outrules = $rules->{out};
304
305 my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/;
306
307 generate_bridge_rules($bridge);
308 generate_tap_rules_direction($iface, $netid, $inrules, $bridge, 'IN');
309 generate_tap_rules_direction($iface, $netid, $outrules, $bridge, 'OUT');
310 iptables_restore();
311}
312
313sub flush_tap_rules {
314 my ($net, $netid, $vmid) = @_;
315
316 my $bridge = $net->{bridge};
317 my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/;
318
319 flush_tap_rules_direction($iface, $bridge, 'IN');
320 flush_tap_rules_direction($iface, $bridge, 'OUT');
321 iptables_restore();
322}
323
324sub flush_tap_rules_direction {
325 my ($iface, $bridge, $direction) = @_;
326
327 my $tapchain = "$iface-$direction";
328
329 if(iptables_chain_exist($tapchain)){
330 iptables_addrule("-F $tapchain");
331
332 my $physdevdirection = $direction eq 'IN' ? "out":"in";
333 my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
334 if(iptables_rule_exist($rule)){
335 iptables_addrule("-D $rule");
336 }
337
338 if($direction eq 'OUT'){
339 my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain";
340
341 if(!iptables_rule_exist($rule)){
342 iptables_addrule("-D $rule");
343 }
344 }
345
346 iptables_addrule("-X $tapchain");
347 }
348}
349
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350my $generate_input_rule = sub {
351 my ($zoneinfo, $rule, $net, $netid) = @_;
352
dddd9413 353 my $zone = $net->{zone} || die "internal error";
a8195f4f 354 my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error";
dddd9413 355 my $tap = $net->{tap} || die "internal error";
9aab3127 356
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357 my $dest = "$zid:$tap";
358
359 if ($rule->{dest}) {
360 $dest .= ":$rule->{dest}";
361 }
362
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363 my $action = $rule->{service} ?
364 "$rule->{service}($rule->{action})" : $rule->{action};
365
b9b06789 366 my $sources = [];
8cebfa6f 367
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368 if (!$rule->{source}) {
369 push @$sources, 'all';
370 } elsif ($zoneinfo->{$zone}->{type} eq 'bport') {
8cebfa6f 371 my $bridge_zone = $zoneinfo->{$zone}->{bridge_zone} || die "internal error";
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372 my $zoneref = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error";
373
374 # using 'all' does not work, so we create one rule for
375 # each related zone on the same bridge
376 push @$sources, "${zoneref}:$rule->{source}";
377 foreach my $z (keys %$zoneinfo) {
378 next if $z eq $zone;
379 next if !$zoneinfo->{$z}->{bridge_zone};
380 next if $zoneinfo->{$z}->{bridge_zone} ne $bridge_zone;
381 $zoneref = $zoneinfo->{$z}->{zoneref} || die "internal error";
382 push @$sources, "${zoneref}:$rule->{source}";
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383 }
384 } else {
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385 push @$sources, "all:$rule->{source}";
386 }
387
388 my $out = '';
389
390 foreach my $source (@$sources) {
391 $out .= sprintf($rule_format, $action, $source, $dest, $rule->{proto} || '-',
392 $rule->{dport} || '-', $rule->{sport} || '-');
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393 }
394
b9b06789 395 return $out;
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396};
397
398my $generate_output_rule = sub {
399 my ($zoneinfo, $rule, $net, $netid) = @_;
400
dddd9413 401 my $zone = $net->{zone} || die "internal error";
a8195f4f 402 my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error";
dddd9413 403 my $tap = $net->{tap} || die "internal error";
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404
405 my $action = $rule->{service} ?
406 "$rule->{service}($rule->{action})" : $rule->{action};
dddd9413 407
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408 my $dest;
409
410 if (!$rule->{dest}) {
9a4644fa 411 $dest = 'all';
8cebfa6f 412 } else {
9a4644fa 413 $dest = "all:$rule->{dest}";
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414 }
415
416 return sprintf($rule_format, $action, "$zid:$tap", $dest,
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417 $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-');
418};
419
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420# we need complete VM configuration of all VMs (openvz/qemu)
421# in vmdata
422
5e1267a5 423my $compile_shorewall = sub {
dddd9413 424 my ($targetdir, $vmdata, $rules) = @_;
b6360c3f 425
80bfe1ff 426 # remove existing data ?
a8195f4f 427 foreach my $file (qw(params zones rules interfaces maclist policy)) {
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428 unlink "$targetdir/$file";
429 }
430
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431 my $netinfo;
432
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433 my $zoneinfo = {
434 fw => { type => 'firewall' },
435 };
436
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437 my $maclist = {};
438
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439 my $register_bridge;
440
441 $register_bridge = sub {
442 my ($bridge, $vlan) = @_;
f789653a 443
1b6a0a59 444 my $zone = $bridge;
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445
446 return $zone if $zoneinfo->{$zone};
447
1b6a0a59 448 my $ext_zone = "${bridge}_ext";
8cebfa6f 449
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450 $zoneinfo->{$zone} = {
451 type => 'bridge',
452 bridge => $bridge,
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453 bridge_ext_zone => $ext_zone,
454 };
455
456 # physical input devices
457 my $dir = "/sys/class/net/$bridge/brif";
458 my $physical = {};
459 PVE::Tools::dir_glob_foreach($dir, '((eth|bond).+)', sub {
460 my ($slave) = @_;
461 $physical->{$slave} = 1;
462 });
463
464 $zoneinfo->{$ext_zone} = {
465 type => 'bport',
466 bridge_zone => $zone,
467 ifaces => $physical,
f789653a 468 };
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469
470 return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
471
472 return $zone;
473 };
474
475 my $register_bridge_port = sub {
476 my ($bridge, $vlan, $vmzone, $tap) = @_;
477
478 my $bridge_zone = &$register_bridge($bridge, $vlan);
1b6a0a59 479 my $zone = $bridge_zone . '_' . $vmzone;
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480
481 if (!$zoneinfo->{$zone}) {
482 $zoneinfo->{$zone} = {
483 type => 'bport',
484 bridge_zone => $bridge_zone,
485 ifaces => {},
486 };
487 }
488
489 $zoneinfo->{$zone}->{ifaces}->{$tap} = 1;
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490
491 return $zone;
492 };
493
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494 foreach my $vmid (keys %{$vmdata->{qemu}}) {
495 $netinfo->{$vmid} = {};
496 my $conf = $vmdata->{qemu}->{$vmid};
497 foreach my $opt (keys %$conf) {
498 next if $opt !~ m/^net(\d+)$/;
dddd9413 499 my $netnum = $1;
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500 my $net = PVE::QemuServer::parse_net($conf->{$opt});
501 next if !$net;
886aba9c 502 die "implement me" if !$net->{bridge};
886aba9c 503
f789653a 504 my $vmzone = $conf->{zone} || "vm$vmid";
dddd9413 505 $net->{tap} = "tap${vmid}i${netnum}";
026a6466 506 $maclist->{$net->{tap}} = $net->{macaddr} || die "internal error";
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507 $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap});
508 $netinfo->{$vmid}->{$opt} = $net;
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509 }
510 }
511
512 #print Dumper($netinfo);
513
f789653a 514 # NOTE: zone names have length limit, so we need to
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515 # translate them into shorter names
516
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517 my $zoneid = 0;
518 my $zonemap = { fw => 'fw' };
519
520 my $lookup_zonename = sub {
521 my ($zone) = @_;
522
523 return $zonemap->{$zone} if defined($zonemap->{$zone});
524 $zonemap->{$zone} = 'z' . $zoneid++;
525
526 return $zonemap->{$zone};
527 };
528
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529 foreach my $z (sort keys %$zoneinfo) {
530 $zoneinfo->{$z}->{id} = &$lookup_zonename($z);
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531 $zoneinfo->{$z}->{zonevar} = uc($z);
532 $zoneinfo->{$z}->{zoneref} = '$' . $zoneinfo->{$z}->{zonevar};
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533 }
534
f789653a 535 my $out;
886aba9c 536
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537 # dump params file
538 $out = "# PVE zones\n";
539 foreach my $z (sort keys %$zoneinfo) {
540 $out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n";
541 }
542 PVE::Tools::file_set_contents("$targetdir/params", $out);
543
544 # dump zone file
545
546 my $format = "%-30s %-10s %-15s\n";
547 $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
f789653a 548
886aba9c 549 foreach my $z (sort keys %$zoneinfo) {
a8195f4f 550 my $zid = $zoneinfo->{$z}->{zoneref};
f789653a 551 if ($zoneinfo->{$z}->{type} eq 'firewall') {
a8195f4f 552 $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '');
f789653a 553 } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
a8195f4f 554 $out .= sprintf($format, $zid, 'ipv4', '');
f789653a
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555 } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
556 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
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557 my $bzid = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error";
558 $out .= sprintf($format, "$zid:$bzid", 'bport', '');
f789653a
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559 } else {
560 die "internal error";
561 }
886aba9c
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562 }
563
f789653a
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564 $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
565
566 PVE::Tools::file_set_contents("$targetdir/zones", $out);
886aba9c 567
f789653a 568 # dump interfaces
886aba9c 569
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570 $format = "%-25s %-20s %-10s %-15s\n";
571 $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS');
f789653a 572
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573 my $maclist_format = "%-15s %-15s %-15s\n";
574 my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
575
886aba9c 576 foreach my $z (sort keys %$zoneinfo) {
a8195f4f 577 my $zid = $zoneinfo->{$z}->{zoneref};
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578 if ($zoneinfo->{$z}->{type} eq 'firewall') {
579 # do nothing;
580 } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
581 my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error";
a8195f4f 582 $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional');
f789653a
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583 } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
584 my $ifaces = $zoneinfo->{$z}->{ifaces};
585 foreach my $iface (sort keys %$ifaces) {
586 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
587 my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error";
588 my $iftxt = "$bridge:$iface";
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589
590 if ($maclist->{$iface}) {
591 $out .= sprintf($format, $zid, $iftxt, '-', 'maclist');
592 $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
593 } else {
594 $out .= sprintf($format, $zid, $iftxt, '-', '');
595 }
f789653a
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596 }
597 } else {
598 die "internal error";
b6360c3f
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599 }
600 }
601
f789653a
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602 $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
603
604 PVE::Tools::file_set_contents("$targetdir/interfaces", $out);
605
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606 # dump maclist
607 PVE::Tools::file_set_contents("$targetdir/maclist", $macs);
608
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609 # dump policy
610
611 $format = "%-15s %-15s %-15s %s\n";
612 $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
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613 $out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
614
615 # we need to disable intra-zone traffic on bridges. Else traffic
616 # from untracked interfaces simply pass the firewall
617 foreach my $z (sort keys %$zoneinfo) {
618 my $zid = $zoneinfo->{$z}->{zoneref};
619 if ($zoneinfo->{$z}->{type} eq 'bridge') {
620 $out .= sprintf($format, $zid, $zid, 'REJECT', 'info');
621 }
622 }
f789653a 623 $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
886aba9c 624
f789653a 625 PVE::Tools::file_set_contents("$targetdir/policy", $out);
886aba9c 626
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627 # dump rules
628 $out = '';
629
630 $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
631 foreach my $vmid (sort keys %$rules) {
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632 my $inrules = $rules->{$vmid}->{in};
633 my $outrules = $rules->{$vmid}->{out};
634
635 if (scalar(@$inrules)) {
636 $out .= "# IN to VM $vmid\n";
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637 foreach my $rule (@$inrules) {
638 foreach my $netid (keys %{$netinfo->{$vmid}}) {
639 my $net = $netinfo->{$vmid}->{$netid};
9a4644fa 640 next if $rule->{iface} && $rule->{iface} ne $netid;
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641 $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
642 }
643 }
644 }
645
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646 if (scalar(@$outrules)) {
647 $out .= "# OUT from VM $vmid\n";
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648 foreach my $rule (@$outrules) {
649 foreach my $netid (keys %{$netinfo->{$vmid}}) {
650 my $net = $netinfo->{$vmid}->{$netid};
9a4644fa 651 next if $rule->{iface} && $rule->{iface} ne $netid;
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652 $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
653 }
654 }
655 }
656 }
657
658 PVE::Tools::file_set_contents("$targetdir/rules", $out);
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659};
660
661
662sub parse_fw_rules {
663 my ($filename, $fh) = @_;
664
665 my $section;
666
667 my $res = { in => [], out => [] };
668
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669 my $macros = get_shorewall_macros();
670 my $protocols = get_etc_protocols();
671
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672 while (defined(my $line = <$fh>)) {
673 next if $line =~ m/^#/;
674 next if $line =~ m/^\s*$/;
675
676 if ($line =~ m/^\[(in|out)\]\s*$/i) {
677 $section = lc($1);
678 next;
679 }
680 next if !$section;
681
682 my ($action, $iface, $source, $dest, $proto, $dport, $sport) =
683 split(/\s+/, $line);
684
685 if (!$action) {
686 warn "skip incomplete line\n";
687 next;
688 }
689
690 my $service;
3a616aa0 691 if ($action =~ m/^(ACCEPT|DROP|REJECT|GROUP-(\S+))$/) {
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692 # OK
693 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
694 ($service, $action) = ($1, $2);
695 if (!$macros->{$service}) {
696 warn "unknown service '$service'\n";
697 next;
698 }
699 } else {
700 warn "unknown action '$action'\n";
701 next;
702 }
703
704 $iface = undef if $iface && $iface eq '-';
705 if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) {
706 warn "unknown interface '$iface'\n";
707 next;
708 }
709
710 $proto = undef if $proto && $proto eq '-';
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711 if ($proto && !(defined($protocols->{byname}->{$proto}) ||
712 defined($protocols->{byid}->{$proto}))) {
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713 warn "unknown protokol '$proto'\n";
714 next;
715 }
716
717 $source = undef if $source && $source eq '-';
5e1267a5 718 $dest = undef if $dest && $dest eq '-';
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719
720 $dport = undef if $dport && $dport eq '-';
721 $sport = undef if $sport && $sport eq '-';
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722 my $nbdport = undef;
723 my $nbsport = undef;
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724 my $nbsource = undef;
725 my $nbdest = undef;
5e1267a5 726
ecbea048 727 eval {
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728 $nbsource = parse_address_list($source) if $source;
729 $nbdest = parse_address_list($dest) if $dest;
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730 $nbdport = parse_port_name_number_or_range($dport) if $dport;
731 $nbsport = parse_port_name_number_or_range($sport) if $sport;
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732 };
733 if (my $err = $@) {
734 warn $err;
735 next;
736
737 }
738
739
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740 my $rule = {
741 action => $action,
742 service => $service,
743 iface => $iface,
744 source => $source,
745 dest => $dest,
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746 nbsource => $nbsource,
747 nbdest => $nbdest,
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748 proto => $proto,
749 dport => $dport,
750 sport => $sport,
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751 nbdport => $nbdport,
752 nbsport => $nbsport,
753
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754 };
755
756 push @{$res->{$section}}, $rule;
757 }
758
759 return $res;
760}
761
762sub read_local_vm_config {
763
764 my $openvz = {};
765
766 my $qemu = {};
767
768 my $list = PVE::QemuServer::config_list();
769
770 foreach my $vmid (keys %$list) {
b9b06789 771 #next if !($vmid eq '100' || $vmid eq '102');
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772 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
773 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
774 $qemu->{$vmid} = $conf;
775 }
776 }
777
778 my $vmdata = { openvz => $openvz, qemu => $qemu };
779
780 return $vmdata;
781};
782
783sub read_vm_firewall_rules {
784 my ($vmdata) = @_;
785 my $rules = {};
786 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
787 my $filename = "/etc/pve/firewall/$vmid.fw";
788 my $fh = IO::File->new($filename, O_RDONLY);
789 next if !$fh;
790
791 $rules->{$vmid} = parse_fw_rules($filename, $fh);
792 }
793
794 return $rules;
795}
796
797sub compile {
798
799 my $vmdata = read_local_vm_config();
800 my $rules = read_vm_firewall_rules($vmdata);
801
802 # print Dumper($vmdata);
803
804 my $swdir = '/etc/shorewall';
805 mkdir $swdir;
806
807 &$compile_shorewall($swdir, $vmdata, $rules);
b6360c3f 808
5e1267a5 809 PVE::Tools::run_command(['shorewall', 'compile']);
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810}
811
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812sub compile_and_start {
813 my ($restart) = @_;
886aba9c 814
5e1267a5 815 compile();
b6360c3f 816
5e1267a5 817 PVE::Tools::run_command(['shorewall', $restart ? 'restart' : 'start']);
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818}
819
820
8211;