Commit | Line | Data |
---|---|---|
b6360c3f DM |
1 | package PVE::Firewall; |
2 | ||
3 | use warnings; | |
4 | use strict; | |
5 | use Data::Dumper; | |
f789653a | 6 | use PVE::Tools; |
b6360c3f | 7 | use PVE::QemuServer; |
5e1267a5 DM |
8 | use File::Path; |
9 | use IO::File; | |
ecbea048 | 10 | use Net::IP; |
3a616aa0 | 11 | use PVE::Tools qw(run_command); |
ecbea048 | 12 | |
5e1267a5 | 13 | use Data::Dumper; |
b6360c3f | 14 | |
9aab3127 | 15 | my $macros; |
3a616aa0 AD |
16 | my @ruleset = (); |
17 | ||
9aab3127 DM |
18 | sub 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 | ||
fcba0beb DM |
30 | my $etc_services; |
31 | ||
32 | sub 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 | |
fcba0beb DM |
63 | return $etc_services; |
64 | } | |
65 | ||
66 | my $etc_protocols; | |
67 | ||
68 | sub 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 $etc_protocols; | |
97 | } | |
98 | ||
ecbea048 DM |
99 | sub parse_address_list { |
100 | my ($str) = @_; | |
101 | ||
102 | foreach my $aor (split(/,/, $str)) { | |
103 | if (!Net::IP->new($aor)) { | |
104 | my $err = Net::IP::Error(); | |
105 | die "invalid IP address: $err\n"; | |
106 | } | |
107 | } | |
108 | } | |
dddd9413 | 109 | |
fcba0beb DM |
110 | sub parse_port_name_number_or_range { |
111 | my ($str) = @_; | |
112 | ||
113 | my $services = PVE::Firewall::get_etc_services(); | |
4cdbb3b7 | 114 | my $nbports = 0; |
fcba0beb | 115 | foreach my $item (split(/,/, $str)) { |
4cdbb3b7 | 116 | my $portlist = ""; |
fcba0beb | 117 | foreach my $pon (split(':', $item, 2)) { |
4cdbb3b7 AD |
118 | if ($pon =~ m/^\d+$/){ |
119 | die "invalid port '$pon'\n" if $pon < 0 && $pon > 65536; | |
120 | }else{ | |
121 | die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon}; | |
122 | } | |
123 | $nbports++; | |
fcba0beb DM |
124 | } |
125 | } | |
126 | ||
4cdbb3b7 | 127 | return ($nbports); |
fcba0beb DM |
128 | } |
129 | ||
8cebfa6f | 130 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 131 | |
3a616aa0 AD |
132 | sub iptables { |
133 | my ($cmd) = @_; | |
134 | ||
135 | run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {}); | |
136 | } | |
137 | ||
138 | sub iptables_restore { | |
139 | ||
140 | unshift (@ruleset, '*filter'); | |
141 | push (@ruleset, 'COMMIT'); | |
142 | ||
143 | my $cmdlist = join("\n", @ruleset); | |
144 | ||
145 | run_command("echo '$cmdlist' | /sbin/iptables-restore -n", outfunc => sub {}); | |
146 | } | |
147 | ||
148 | sub iptables_addrule { | |
149 | my ($rule) = @_; | |
150 | ||
151 | push (@ruleset, $rule); | |
152 | } | |
153 | ||
154 | sub iptables_chain_exist { | |
155 | my ($chain) = @_; | |
156 | ||
157 | eval{ | |
158 | iptables("-n --list $chain"); | |
159 | }; | |
160 | return undef if $@; | |
161 | ||
162 | return 1; | |
163 | } | |
164 | ||
165 | sub iptables_rule_exist { | |
166 | my ($rule) = @_; | |
167 | ||
168 | eval{ | |
169 | iptables("-C $rule"); | |
170 | }; | |
171 | return undef if $@; | |
172 | ||
173 | return 1; | |
174 | } | |
175 | ||
176 | sub iptables_generate_rule { | |
177 | my ($chain, $rule) = @_; | |
178 | ||
179 | my $cmd = "-A $chain"; | |
180 | ||
181 | $cmd .= " -s $rule->{source}" if $rule->{source}; | |
182 | $cmd .= " -d $rule->{dest}" if $rule->{destination}; | |
183 | $cmd .= " -p $rule->{proto}" if $rule->{proto}; | |
4cdbb3b7 | 184 | $cmd .= " --match multiport" if $rule->{nbdport} && $rule->{nbdport} > 1; |
3a616aa0 | 185 | $cmd .= " --dport $rule->{dport}" if $rule->{dport}; |
4cdbb3b7 | 186 | $cmd .= " --match multiport" if $rule->{nbsport} && $rule->{nbsport} > 1; |
3a616aa0 AD |
187 | $cmd .= " --sport $rule->{sport}" if $rule->{sport}; |
188 | $cmd .= " -j $rule->{action}" if $rule->{action}; | |
189 | ||
190 | iptables_addrule($cmd); | |
191 | ||
192 | } | |
193 | ||
194 | sub generate_bridge_rules { | |
195 | my ($bridge) = @_; | |
196 | ||
197 | if(!iptables_chain_exist("BRIDGEFW-OUT")){ | |
198 | iptables_addrule(":BRIDGEFW-OUT - [0:0]"); | |
199 | } | |
200 | ||
201 | if(!iptables_chain_exist("BRIDGEFW-IN")){ | |
202 | iptables_addrule(":BRIDGEFW-IN - [0:0]"); | |
203 | } | |
204 | ||
205 | if(!iptables_chain_exist("proxmoxfw-FORWARD")){ | |
206 | iptables_addrule(":proxmoxfw-FORWARD - [0:0]"); | |
207 | iptables_addrule("-I FORWARD -j proxmoxfw-FORWARD"); | |
208 | iptables_addrule("-A proxmoxfw-FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT"); | |
209 | iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-in --physdev-is-bridged -j BRIDGEFW-OUT"); | |
210 | iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-out --physdev-is-bridged -j BRIDGEFW-IN"); | |
211 | ||
212 | } | |
213 | ||
214 | generate_proxmoxfwinput(); | |
215 | ||
216 | if(!iptables_chain_exist("$bridge-IN")){ | |
217 | iptables_addrule(":$bridge-IN - [0:0]"); | |
218 | iptables_addrule("-A proxmoxfw-FORWARD -i $bridge -j DROP"); #disable interbridge routing | |
219 | iptables_addrule("-A BRIDGEFW-IN -j $bridge-IN"); | |
220 | iptables_addrule("-A $bridge-IN -j ACCEPT"); | |
221 | ||
222 | } | |
223 | ||
224 | if(!iptables_chain_exist("$bridge-OUT")){ | |
225 | iptables_addrule(":$bridge-OUT - [0:0]"); | |
226 | iptables_addrule("-A proxmoxfw-FORWARD -o $bridge -j DROP"); # disable interbridge routing | |
227 | iptables_addrule("-A BRIDGEFW-OUT -j $bridge-OUT"); | |
228 | ||
229 | } | |
230 | ||
231 | } | |
232 | ||
233 | ||
234 | sub generate_tap_rules_direction { | |
235 | my ($iface, $netid, $rules, $bridge, $direction) = @_; | |
236 | ||
237 | my $tapchain = "$iface-$direction"; | |
238 | ||
239 | iptables_addrule(":$tapchain - [0:0]"); | |
240 | ||
241 | iptables_addrule("-A $tapchain -m state --state INVALID -j DROP"); | |
242 | iptables_addrule("-A $tapchain -m state --state RELATED,ESTABLISHED -j ACCEPT"); | |
243 | ||
244 | if (scalar(@$rules)) { | |
245 | foreach my $rule (@$rules) { | |
246 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
247 | if($rule->{action} =~ m/^(GROUP-(\S+))$/){ | |
248 | $rule->{action} .= "-$direction"; | |
249 | #generate empty group rule if don't exist | |
250 | if(!iptables_chain_exist($rule->{action})){ | |
251 | generate_group_rules($2); | |
252 | } | |
253 | } | |
254 | #we go to vmbr-IN if accept in out rules | |
255 | $rule->{action} = "$bridge-IN" if $rule->{action} eq 'ACCEPT' && $direction eq 'OUT'; | |
256 | iptables_generate_rule($tapchain, $rule); | |
257 | } | |
258 | } | |
259 | ||
260 | iptables_addrule("-A $tapchain -j LOG --log-prefix \"$tapchain-dropped: \" --log-level 4"); | |
261 | iptables_addrule("-A $tapchain -j DROP"); | |
262 | ||
263 | #plug the tap chain to bridge chain | |
264 | my $physdevdirection = $direction eq 'IN' ? "out":"in"; | |
265 | my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain"; | |
266 | ||
267 | if(!iptables_rule_exist($rule)){ | |
268 | iptables_addrule("-I $rule"); | |
269 | } | |
270 | ||
271 | if($direction eq 'OUT'){ | |
272 | #add tap->host rules | |
273 | my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain"; | |
274 | ||
275 | if(!iptables_rule_exist($rule)){ | |
276 | iptables_addrule("-A $rule"); | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
281 | sub generate_tap_rules { | |
282 | my ($net, $netid, $vmid) = @_; | |
283 | ||
284 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
285 | my $fh = IO::File->new($filename, O_RDONLY); | |
286 | return if !$fh; | |
287 | ||
288 | #generate bridge rules | |
289 | my $bridge = $net->{bridge}; | |
290 | my $tag = $net->{tag}; | |
291 | $bridge .= "v$tag" if $tag; | |
292 | ||
293 | #generate tap chain | |
294 | my $rules = parse_fw_rules($filename, $fh); | |
295 | ||
296 | my $inrules = $rules->{in}; | |
297 | my $outrules = $rules->{out}; | |
298 | ||
299 | my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/; | |
300 | ||
301 | generate_bridge_rules($bridge); | |
302 | generate_tap_rules_direction($iface, $netid, $inrules, $bridge, 'IN'); | |
303 | generate_tap_rules_direction($iface, $netid, $outrules, $bridge, 'OUT'); | |
304 | iptables_restore(); | |
305 | } | |
306 | ||
307 | sub flush_tap_rules { | |
308 | my ($net, $netid, $vmid) = @_; | |
309 | ||
310 | my $bridge = $net->{bridge}; | |
311 | my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/; | |
312 | ||
313 | flush_tap_rules_direction($iface, $bridge, 'IN'); | |
314 | flush_tap_rules_direction($iface, $bridge, 'OUT'); | |
315 | iptables_restore(); | |
316 | } | |
317 | ||
318 | sub flush_tap_rules_direction { | |
319 | my ($iface, $bridge, $direction) = @_; | |
320 | ||
321 | my $tapchain = "$iface-$direction"; | |
322 | ||
323 | if(iptables_chain_exist($tapchain)){ | |
324 | iptables_addrule("-F $tapchain"); | |
325 | ||
326 | my $physdevdirection = $direction eq 'IN' ? "out":"in"; | |
327 | my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain"; | |
328 | if(iptables_rule_exist($rule)){ | |
329 | iptables_addrule("-D $rule"); | |
330 | } | |
331 | ||
332 | if($direction eq 'OUT'){ | |
333 | my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain"; | |
334 | ||
335 | if(!iptables_rule_exist($rule)){ | |
336 | iptables_addrule("-D $rule"); | |
337 | } | |
338 | } | |
339 | ||
340 | iptables_addrule("-X $tapchain"); | |
341 | } | |
342 | } | |
343 | ||
dddd9413 DM |
344 | my $generate_input_rule = sub { |
345 | my ($zoneinfo, $rule, $net, $netid) = @_; | |
346 | ||
dddd9413 | 347 | my $zone = $net->{zone} || die "internal error"; |
a8195f4f | 348 | my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error"; |
dddd9413 | 349 | my $tap = $net->{tap} || die "internal error"; |
9aab3127 | 350 | |
8cebfa6f DM |
351 | my $dest = "$zid:$tap"; |
352 | ||
353 | if ($rule->{dest}) { | |
354 | $dest .= ":$rule->{dest}"; | |
355 | } | |
356 | ||
9aab3127 DM |
357 | my $action = $rule->{service} ? |
358 | "$rule->{service}($rule->{action})" : $rule->{action}; | |
359 | ||
b9b06789 | 360 | my $sources = []; |
8cebfa6f | 361 | |
b9b06789 DM |
362 | if (!$rule->{source}) { |
363 | push @$sources, 'all'; | |
364 | } elsif ($zoneinfo->{$zone}->{type} eq 'bport') { | |
8cebfa6f | 365 | my $bridge_zone = $zoneinfo->{$zone}->{bridge_zone} || die "internal error"; |
b9b06789 DM |
366 | my $zoneref = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error"; |
367 | ||
368 | # using 'all' does not work, so we create one rule for | |
369 | # each related zone on the same bridge | |
370 | push @$sources, "${zoneref}:$rule->{source}"; | |
371 | foreach my $z (keys %$zoneinfo) { | |
372 | next if $z eq $zone; | |
373 | next if !$zoneinfo->{$z}->{bridge_zone}; | |
374 | next if $zoneinfo->{$z}->{bridge_zone} ne $bridge_zone; | |
375 | $zoneref = $zoneinfo->{$z}->{zoneref} || die "internal error"; | |
376 | push @$sources, "${zoneref}:$rule->{source}"; | |
8cebfa6f DM |
377 | } |
378 | } else { | |
b9b06789 DM |
379 | push @$sources, "all:$rule->{source}"; |
380 | } | |
381 | ||
382 | my $out = ''; | |
383 | ||
384 | foreach my $source (@$sources) { | |
385 | $out .= sprintf($rule_format, $action, $source, $dest, $rule->{proto} || '-', | |
386 | $rule->{dport} || '-', $rule->{sport} || '-'); | |
8cebfa6f DM |
387 | } |
388 | ||
b9b06789 | 389 | return $out; |
dddd9413 DM |
390 | }; |
391 | ||
392 | my $generate_output_rule = sub { | |
393 | my ($zoneinfo, $rule, $net, $netid) = @_; | |
394 | ||
dddd9413 | 395 | my $zone = $net->{zone} || die "internal error"; |
a8195f4f | 396 | my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error"; |
dddd9413 | 397 | my $tap = $net->{tap} || die "internal error"; |
9aab3127 DM |
398 | |
399 | my $action = $rule->{service} ? | |
400 | "$rule->{service}($rule->{action})" : $rule->{action}; | |
dddd9413 | 401 | |
8cebfa6f DM |
402 | my $dest; |
403 | ||
404 | if (!$rule->{dest}) { | |
9a4644fa | 405 | $dest = 'all'; |
8cebfa6f | 406 | } else { |
9a4644fa | 407 | $dest = "all:$rule->{dest}"; |
8cebfa6f DM |
408 | } |
409 | ||
410 | return sprintf($rule_format, $action, "$zid:$tap", $dest, | |
dddd9413 DM |
411 | $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-'); |
412 | }; | |
413 | ||
b6360c3f DM |
414 | # we need complete VM configuration of all VMs (openvz/qemu) |
415 | # in vmdata | |
416 | ||
5e1267a5 | 417 | my $compile_shorewall = sub { |
dddd9413 | 418 | my ($targetdir, $vmdata, $rules) = @_; |
b6360c3f | 419 | |
80bfe1ff | 420 | # remove existing data ? |
a8195f4f | 421 | foreach my $file (qw(params zones rules interfaces maclist policy)) { |
80bfe1ff DM |
422 | unlink "$targetdir/$file"; |
423 | } | |
424 | ||
b6360c3f DM |
425 | my $netinfo; |
426 | ||
886aba9c DM |
427 | my $zoneinfo = { |
428 | fw => { type => 'firewall' }, | |
429 | }; | |
430 | ||
026a6466 DM |
431 | my $maclist = {}; |
432 | ||
35081236 DM |
433 | my $register_bridge; |
434 | ||
435 | $register_bridge = sub { | |
436 | my ($bridge, $vlan) = @_; | |
f789653a | 437 | |
1b6a0a59 | 438 | my $zone = $bridge; |
f789653a DM |
439 | |
440 | return $zone if $zoneinfo->{$zone}; | |
441 | ||
1b6a0a59 | 442 | my $ext_zone = "${bridge}_ext"; |
8cebfa6f | 443 | |
f789653a DM |
444 | $zoneinfo->{$zone} = { |
445 | type => 'bridge', | |
446 | bridge => $bridge, | |
8cebfa6f DM |
447 | bridge_ext_zone => $ext_zone, |
448 | }; | |
449 | ||
450 | # physical input devices | |
451 | my $dir = "/sys/class/net/$bridge/brif"; | |
452 | my $physical = {}; | |
453 | PVE::Tools::dir_glob_foreach($dir, '((eth|bond).+)', sub { | |
454 | my ($slave) = @_; | |
455 | $physical->{$slave} = 1; | |
456 | }); | |
457 | ||
458 | $zoneinfo->{$ext_zone} = { | |
459 | type => 'bport', | |
460 | bridge_zone => $zone, | |
461 | ifaces => $physical, | |
f789653a | 462 | }; |
35081236 DM |
463 | |
464 | return &$register_bridge("${bridge}v${vlan}") if defined($vlan); | |
465 | ||
466 | return $zone; | |
467 | }; | |
468 | ||
469 | my $register_bridge_port = sub { | |
470 | my ($bridge, $vlan, $vmzone, $tap) = @_; | |
471 | ||
472 | my $bridge_zone = &$register_bridge($bridge, $vlan); | |
1b6a0a59 | 473 | my $zone = $bridge_zone . '_' . $vmzone; |
35081236 DM |
474 | |
475 | if (!$zoneinfo->{$zone}) { | |
476 | $zoneinfo->{$zone} = { | |
477 | type => 'bport', | |
478 | bridge_zone => $bridge_zone, | |
479 | ifaces => {}, | |
480 | }; | |
481 | } | |
482 | ||
483 | $zoneinfo->{$zone}->{ifaces}->{$tap} = 1; | |
f789653a DM |
484 | |
485 | return $zone; | |
486 | }; | |
487 | ||
b6360c3f DM |
488 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
489 | $netinfo->{$vmid} = {}; | |
490 | my $conf = $vmdata->{qemu}->{$vmid}; | |
491 | foreach my $opt (keys %$conf) { | |
492 | next if $opt !~ m/^net(\d+)$/; | |
dddd9413 | 493 | my $netnum = $1; |
b6360c3f DM |
494 | my $net = PVE::QemuServer::parse_net($conf->{$opt}); |
495 | next if !$net; | |
886aba9c | 496 | die "implement me" if !$net->{bridge}; |
886aba9c | 497 | |
f789653a | 498 | my $vmzone = $conf->{zone} || "vm$vmid"; |
dddd9413 | 499 | $net->{tap} = "tap${vmid}i${netnum}"; |
026a6466 | 500 | $maclist->{$net->{tap}} = $net->{macaddr} || die "internal error"; |
dddd9413 DM |
501 | $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap}); |
502 | $netinfo->{$vmid}->{$opt} = $net; | |
886aba9c DM |
503 | } |
504 | } | |
505 | ||
506 | #print Dumper($netinfo); | |
507 | ||
f789653a | 508 | # NOTE: zone names have length limit, so we need to |
886aba9c DM |
509 | # translate them into shorter names |
510 | ||
f789653a DM |
511 | my $zoneid = 0; |
512 | my $zonemap = { fw => 'fw' }; | |
513 | ||
514 | my $lookup_zonename = sub { | |
515 | my ($zone) = @_; | |
516 | ||
517 | return $zonemap->{$zone} if defined($zonemap->{$zone}); | |
518 | $zonemap->{$zone} = 'z' . $zoneid++; | |
519 | ||
520 | return $zonemap->{$zone}; | |
521 | }; | |
522 | ||
dddd9413 DM |
523 | foreach my $z (sort keys %$zoneinfo) { |
524 | $zoneinfo->{$z}->{id} = &$lookup_zonename($z); | |
a8195f4f DM |
525 | $zoneinfo->{$z}->{zonevar} = uc($z); |
526 | $zoneinfo->{$z}->{zoneref} = '$' . $zoneinfo->{$z}->{zonevar}; | |
dddd9413 DM |
527 | } |
528 | ||
f789653a | 529 | my $out; |
886aba9c | 530 | |
a8195f4f DM |
531 | # dump params file |
532 | $out = "# PVE zones\n"; | |
533 | foreach my $z (sort keys %$zoneinfo) { | |
534 | $out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n"; | |
535 | } | |
536 | PVE::Tools::file_set_contents("$targetdir/params", $out); | |
537 | ||
538 | # dump zone file | |
539 | ||
540 | my $format = "%-30s %-10s %-15s\n"; | |
541 | $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS'); | |
f789653a | 542 | |
886aba9c | 543 | foreach my $z (sort keys %$zoneinfo) { |
a8195f4f | 544 | my $zid = $zoneinfo->{$z}->{zoneref}; |
f789653a | 545 | if ($zoneinfo->{$z}->{type} eq 'firewall') { |
a8195f4f | 546 | $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, ''); |
f789653a | 547 | } elsif ($zoneinfo->{$z}->{type} eq 'bridge') { |
a8195f4f | 548 | $out .= sprintf($format, $zid, 'ipv4', ''); |
f789653a DM |
549 | } elsif ($zoneinfo->{$z}->{type} eq 'bport') { |
550 | my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error"; | |
a8195f4f DM |
551 | my $bzid = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error"; |
552 | $out .= sprintf($format, "$zid:$bzid", 'bport', ''); | |
f789653a DM |
553 | } else { |
554 | die "internal error"; | |
555 | } | |
886aba9c DM |
556 | } |
557 | ||
f789653a DM |
558 | $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n"); |
559 | ||
560 | PVE::Tools::file_set_contents("$targetdir/zones", $out); | |
886aba9c | 561 | |
f789653a | 562 | # dump interfaces |
886aba9c | 563 | |
a8195f4f DM |
564 | $format = "%-25s %-20s %-10s %-15s\n"; |
565 | $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS'); | |
f789653a | 566 | |
026a6466 DM |
567 | my $maclist_format = "%-15s %-15s %-15s\n"; |
568 | my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE'); | |
569 | ||
886aba9c | 570 | foreach my $z (sort keys %$zoneinfo) { |
a8195f4f | 571 | my $zid = $zoneinfo->{$z}->{zoneref}; |
f789653a DM |
572 | if ($zoneinfo->{$z}->{type} eq 'firewall') { |
573 | # do nothing; | |
574 | } elsif ($zoneinfo->{$z}->{type} eq 'bridge') { | |
575 | my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error"; | |
a8195f4f | 576 | $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional'); |
f789653a DM |
577 | } elsif ($zoneinfo->{$z}->{type} eq 'bport') { |
578 | my $ifaces = $zoneinfo->{$z}->{ifaces}; | |
579 | foreach my $iface (sort keys %$ifaces) { | |
580 | my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error"; | |
581 | my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error"; | |
582 | my $iftxt = "$bridge:$iface"; | |
8cebfa6f DM |
583 | |
584 | if ($maclist->{$iface}) { | |
585 | $out .= sprintf($format, $zid, $iftxt, '-', 'maclist'); | |
586 | $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface}); | |
587 | } else { | |
588 | $out .= sprintf($format, $zid, $iftxt, '-', ''); | |
589 | } | |
f789653a DM |
590 | } |
591 | } else { | |
592 | die "internal error"; | |
b6360c3f DM |
593 | } |
594 | } | |
595 | ||
f789653a DM |
596 | $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n"); |
597 | ||
598 | PVE::Tools::file_set_contents("$targetdir/interfaces", $out); | |
599 | ||
026a6466 DM |
600 | # dump maclist |
601 | PVE::Tools::file_set_contents("$targetdir/maclist", $macs); | |
602 | ||
f789653a DM |
603 | # dump policy |
604 | ||
605 | $format = "%-15s %-15s %-15s %s\n"; | |
606 | $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG'); | |
8cebfa6f DM |
607 | $out .= sprintf($format, 'fw', 'all', 'ACCEPT', ''); |
608 | ||
609 | # we need to disable intra-zone traffic on bridges. Else traffic | |
610 | # from untracked interfaces simply pass the firewall | |
611 | foreach my $z (sort keys %$zoneinfo) { | |
612 | my $zid = $zoneinfo->{$z}->{zoneref}; | |
613 | if ($zoneinfo->{$z}->{type} eq 'bridge') { | |
614 | $out .= sprintf($format, $zid, $zid, 'REJECT', 'info'); | |
615 | } | |
616 | } | |
f789653a | 617 | $out .= sprintf($format, 'all', 'all', 'REJECT', 'info'); |
886aba9c | 618 | |
f789653a | 619 | PVE::Tools::file_set_contents("$targetdir/policy", $out); |
886aba9c | 620 | |
dddd9413 DM |
621 | # dump rules |
622 | $out = ''; | |
623 | ||
624 | $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT'); | |
625 | foreach my $vmid (sort keys %$rules) { | |
78db5872 DM |
626 | my $inrules = $rules->{$vmid}->{in}; |
627 | my $outrules = $rules->{$vmid}->{out}; | |
628 | ||
629 | if (scalar(@$inrules)) { | |
630 | $out .= "# IN to VM $vmid\n"; | |
dddd9413 DM |
631 | foreach my $rule (@$inrules) { |
632 | foreach my $netid (keys %{$netinfo->{$vmid}}) { | |
633 | my $net = $netinfo->{$vmid}->{$netid}; | |
9a4644fa | 634 | next if $rule->{iface} && $rule->{iface} ne $netid; |
dddd9413 DM |
635 | $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid); |
636 | } | |
637 | } | |
638 | } | |
639 | ||
78db5872 DM |
640 | if (scalar(@$outrules)) { |
641 | $out .= "# OUT from VM $vmid\n"; | |
dddd9413 DM |
642 | foreach my $rule (@$outrules) { |
643 | foreach my $netid (keys %{$netinfo->{$vmid}}) { | |
644 | my $net = $netinfo->{$vmid}->{$netid}; | |
9a4644fa | 645 | next if $rule->{iface} && $rule->{iface} ne $netid; |
dddd9413 DM |
646 | $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid); |
647 | } | |
648 | } | |
649 | } | |
650 | } | |
651 | ||
652 | PVE::Tools::file_set_contents("$targetdir/rules", $out); | |
5e1267a5 DM |
653 | }; |
654 | ||
655 | ||
656 | sub parse_fw_rules { | |
657 | my ($filename, $fh) = @_; | |
658 | ||
659 | my $section; | |
660 | ||
661 | my $res = { in => [], out => [] }; | |
662 | ||
fcba0beb DM |
663 | my $macros = get_shorewall_macros(); |
664 | my $protocols = get_etc_protocols(); | |
665 | ||
5e1267a5 DM |
666 | while (defined(my $line = <$fh>)) { |
667 | next if $line =~ m/^#/; | |
668 | next if $line =~ m/^\s*$/; | |
669 | ||
670 | if ($line =~ m/^\[(in|out)\]\s*$/i) { | |
671 | $section = lc($1); | |
672 | next; | |
673 | } | |
674 | next if !$section; | |
675 | ||
676 | my ($action, $iface, $source, $dest, $proto, $dport, $sport) = | |
677 | split(/\s+/, $line); | |
678 | ||
679 | if (!$action) { | |
680 | warn "skip incomplete line\n"; | |
681 | next; | |
682 | } | |
683 | ||
684 | my $service; | |
3a616aa0 | 685 | if ($action =~ m/^(ACCEPT|DROP|REJECT|GROUP-(\S+))$/) { |
5e1267a5 DM |
686 | # OK |
687 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
688 | ($service, $action) = ($1, $2); | |
689 | if (!$macros->{$service}) { | |
690 | warn "unknown service '$service'\n"; | |
691 | next; | |
692 | } | |
693 | } else { | |
694 | warn "unknown action '$action'\n"; | |
695 | next; | |
696 | } | |
697 | ||
698 | $iface = undef if $iface && $iface eq '-'; | |
699 | if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) { | |
700 | warn "unknown interface '$iface'\n"; | |
701 | next; | |
702 | } | |
703 | ||
704 | $proto = undef if $proto && $proto eq '-'; | |
fcba0beb DM |
705 | if ($proto && !(defined($protocols->{byname}->{$proto}) || |
706 | defined($protocols->{byid}->{$proto}))) { | |
5e1267a5 DM |
707 | warn "unknown protokol '$proto'\n"; |
708 | next; | |
709 | } | |
710 | ||
711 | $source = undef if $source && $source eq '-'; | |
5e1267a5 | 712 | $dest = undef if $dest && $dest eq '-'; |
5e1267a5 DM |
713 | |
714 | $dport = undef if $dport && $dport eq '-'; | |
715 | $sport = undef if $sport && $sport eq '-'; | |
4cdbb3b7 AD |
716 | my $nbdport = undef; |
717 | my $nbsport = undef; | |
5e1267a5 | 718 | |
ecbea048 DM |
719 | eval { |
720 | parse_address_list($source) if $source; | |
721 | parse_address_list($dest) if $dest; | |
4cdbb3b7 AD |
722 | $nbdport = parse_port_name_number_or_range($dport) if $dport; |
723 | $nbsport = parse_port_name_number_or_range($sport) if $sport; | |
ecbea048 DM |
724 | }; |
725 | if (my $err = $@) { | |
726 | warn $err; | |
727 | next; | |
728 | ||
729 | } | |
730 | ||
731 | ||
5e1267a5 DM |
732 | my $rule = { |
733 | action => $action, | |
734 | service => $service, | |
735 | iface => $iface, | |
736 | source => $source, | |
737 | dest => $dest, | |
738 | proto => $proto, | |
739 | dport => $dport, | |
740 | sport => $sport, | |
4cdbb3b7 AD |
741 | nbdport => $nbdport, |
742 | nbsport => $nbsport, | |
743 | ||
5e1267a5 DM |
744 | }; |
745 | ||
746 | push @{$res->{$section}}, $rule; | |
747 | } | |
748 | ||
749 | return $res; | |
750 | } | |
751 | ||
752 | sub read_local_vm_config { | |
753 | ||
754 | my $openvz = {}; | |
755 | ||
756 | my $qemu = {}; | |
757 | ||
758 | my $list = PVE::QemuServer::config_list(); | |
759 | ||
760 | foreach my $vmid (keys %$list) { | |
b9b06789 | 761 | #next if !($vmid eq '100' || $vmid eq '102'); |
5e1267a5 DM |
762 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); |
763 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
764 | $qemu->{$vmid} = $conf; | |
765 | } | |
766 | } | |
767 | ||
768 | my $vmdata = { openvz => $openvz, qemu => $qemu }; | |
769 | ||
770 | return $vmdata; | |
771 | }; | |
772 | ||
773 | sub read_vm_firewall_rules { | |
774 | my ($vmdata) = @_; | |
775 | my $rules = {}; | |
776 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { | |
777 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
778 | my $fh = IO::File->new($filename, O_RDONLY); | |
779 | next if !$fh; | |
780 | ||
781 | $rules->{$vmid} = parse_fw_rules($filename, $fh); | |
782 | } | |
783 | ||
784 | return $rules; | |
785 | } | |
786 | ||
787 | sub compile { | |
788 | ||
789 | my $vmdata = read_local_vm_config(); | |
790 | my $rules = read_vm_firewall_rules($vmdata); | |
791 | ||
792 | # print Dumper($vmdata); | |
793 | ||
794 | my $swdir = '/etc/shorewall'; | |
795 | mkdir $swdir; | |
796 | ||
797 | &$compile_shorewall($swdir, $vmdata, $rules); | |
b6360c3f | 798 | |
5e1267a5 | 799 | PVE::Tools::run_command(['shorewall', 'compile']); |
b6360c3f DM |
800 | } |
801 | ||
5e1267a5 DM |
802 | sub compile_and_start { |
803 | my ($restart) = @_; | |
886aba9c | 804 | |
5e1267a5 | 805 | compile(); |
b6360c3f | 806 | |
5e1267a5 | 807 | PVE::Tools::run_command(['shorewall', $restart ? 'restart' : 'start']); |
b6360c3f DM |
808 | } |
809 | ||
810 | ||
811 | 1; |