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Commit | Line | Data |
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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 | ||
d6de1dc2 | 102 | my $nbaor = 0; |
ecbea048 DM |
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"; | |
d6de1dc2 AD |
107 | }else{ |
108 | $nbaor++; | |
ecbea048 DM |
109 | } |
110 | } | |
d6de1dc2 | 111 | return $nbaor; |
ecbea048 | 112 | } |
dddd9413 | 113 | |
fcba0beb DM |
114 | sub parse_port_name_number_or_range { |
115 | my ($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(':', $item, 2)) { |
4cdbb3b7 AD |
122 | if ($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 | $nbports++; | |
fcba0beb DM |
128 | } |
129 | } | |
130 | ||
4cdbb3b7 | 131 | return ($nbports); |
fcba0beb DM |
132 | } |
133 | ||
8cebfa6f | 134 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 135 | |
3a616aa0 AD |
136 | sub iptables { |
137 | my ($cmd) = @_; | |
138 | ||
139 | run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {}); | |
140 | } | |
141 | ||
142 | sub 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 | ||
152 | sub iptables_addrule { | |
153 | my ($rule) = @_; | |
154 | ||
155 | push (@ruleset, $rule); | |
156 | } | |
157 | ||
158 | sub iptables_chain_exist { | |
159 | my ($chain) = @_; | |
160 | ||
161 | eval{ | |
162 | iptables("-n --list $chain"); | |
163 | }; | |
164 | return undef if $@; | |
165 | ||
166 | return 1; | |
167 | } | |
168 | ||
169 | sub iptables_rule_exist { | |
170 | my ($rule) = @_; | |
171 | ||
172 | eval{ | |
173 | iptables("-C $rule"); | |
174 | }; | |
175 | return undef if $@; | |
176 | ||
177 | return 1; | |
178 | } | |
179 | ||
180 | sub iptables_generate_rule { | |
181 | my ($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; |
3a616aa0 AD |
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; |
3a616aa0 AD |
193 | $cmd .= " --sport $rule->{sport}" if $rule->{sport}; |
194 | $cmd .= " -j $rule->{action}" if $rule->{action}; | |
195 | ||
196 | iptables_addrule($cmd); | |
197 | ||
198 | } | |
199 | ||
200 | sub 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 $bridge-OUT"); | |
234 | ||
235 | } | |
236 | ||
237 | } | |
238 | ||
239 | ||
240 | sub generate_tap_rules_direction { | |
241 | my ($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 $rule"); | |
283 | } | |
284 | } | |
285 | } | |
286 | ||
287 | sub generate_tap_rules { | |
288 | my ($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, $bridge, 'OUT'); | |
310 | iptables_restore(); | |
311 | } | |
312 | ||
313 | sub flush_tap_rules { | |
314 | my ($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, $bridge, 'OUT'); | |
321 | iptables_restore(); | |
322 | } | |
323 | ||
324 | sub flush_tap_rules_direction { | |
325 | my ($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 $tapchain"; | |
462a6553 | 340 | if(iptables_rule_exist($rule)){ |
3a616aa0 AD |
341 | iptables_addrule("-D $rule"); |
342 | } | |
343 | } | |
344 | ||
345 | iptables_addrule("-X $tapchain"); | |
346 | } | |
347 | } | |
348 | ||
0bd5f137 AD |
349 | sub enablehostfw { |
350 | ||
351 | generate_proxmoxfwinput(); | |
352 | generate_proxmoxfwoutput(); | |
353 | ||
354 | my $filename = "/etc/pve/local/host.fw"; | |
355 | my $fh = IO::File->new($filename, O_RDONLY); | |
356 | return if !$fh; | |
357 | ||
358 | my $rules = parse_fw_rules($filename, $fh); | |
359 | my $inrules = $rules->{in}; | |
360 | my $outrules = $rules->{out}; | |
361 | ||
362 | #host inbound firewall | |
363 | iptables_addrule(":host-IN - [0:0]"); | |
364 | iptables_addrule("-A host-IN -m state --state INVALID -j DROP"); | |
365 | iptables_addrule("-A host-IN -m state --state RELATED,ESTABLISHED -j ACCEPT"); | |
366 | iptables_addrule("-A host-IN -i lo -j ACCEPT"); | |
367 | iptables_addrule("-A host-IN -m addrtype --dst-type MULTICAST -j ACCEPT"); | |
368 | iptables_addrule("-A host-IN -p udp -m state --state NEW -m multiport --dports 5404,5405 -j ACCEPT"); | |
369 | iptables_addrule("-A host-IN -p udp -m udp --dport 9000 -j ACCEPT"); #corosync | |
370 | ||
371 | if (scalar(@$inrules)) { | |
372 | foreach my $rule (@$inrules) { | |
373 | #we use RETURN because we need to check also tap rules | |
374 | $rule->{action} = 'RETURN' if $rule->{action} eq 'ACCEPT'; | |
375 | iptables_generate_rule('host-IN', $rule); | |
376 | } | |
377 | } | |
378 | ||
379 | iptables_addrule("-A host-IN -j LOG --log-prefix \"kvmhost-IN dropped: \" --log-level 4"); | |
380 | iptables_addrule("-A host-IN -j DROP"); | |
381 | ||
382 | #host outbound firewall | |
383 | iptables_addrule(":host-OUT - [0:0]"); | |
384 | iptables_addrule("-A host-OUT -m state --state INVALID -j DROP"); | |
385 | iptables_addrule("-A host-OUT -m state --state RELATED,ESTABLISHED -j ACCEPT"); | |
386 | iptables_addrule("-A host-OUT -o lo -j ACCEPT"); | |
387 | iptables_addrule("-A host-OUT -m addrtype --dst-type MULTICAST -j ACCEPT"); | |
388 | iptables_addrule("-A host-OUT -p udp -m state --state NEW -m multiport --dports 5404,5405 -j ACCEPT"); | |
389 | iptables_addrule("-A host-OUT -p udp -m udp --dport 9000 -j ACCEPT"); #corosync | |
390 | ||
391 | if (scalar(@$outrules)) { | |
392 | foreach my $rule (@$outrules) { | |
393 | #we use RETURN because we need to check also tap rules | |
394 | $rule->{action} = 'RETURN' if $rule->{action} eq 'ACCEPT'; | |
395 | iptables_generate_rule('host-OUT', $rule); | |
396 | } | |
397 | } | |
398 | ||
399 | iptables_addrule("-A host-OUT -j LOG --log-prefix \"kvmhost-OUT dropped: \" --log-level 4"); | |
400 | iptables_addrule("-A host-OUT -j DROP"); | |
401 | ||
402 | ||
403 | my $rule = "proxmoxfw-INPUT -j host-IN"; | |
404 | if(!iptables_rule_exist($rule)){ | |
405 | iptables_addrule("-I $rule"); | |
406 | } | |
407 | ||
408 | $rule = "proxmoxfw-OUTPUT -j host-OUT"; | |
409 | if(!iptables_rule_exist($rule)){ | |
410 | iptables_addrule("-I $rule"); | |
411 | } | |
412 | ||
413 | iptables_restore(); | |
414 | ||
415 | ||
416 | } | |
417 | ||
418 | sub disablehostfw { | |
419 | ||
420 | my $chain = "host-IN"; | |
421 | ||
422 | my $rule = "proxmoxfw-INPUT -j $chain"; | |
423 | if(iptables_rule_exist($rule)){ | |
424 | iptables_addrule("-D $rule"); | |
425 | } | |
426 | ||
427 | if(iptables_chain_exist($chain)){ | |
428 | iptables_addrule("-F $chain"); | |
429 | iptables_addrule("-X $chain"); | |
430 | } | |
431 | ||
432 | $chain = "host-OUT"; | |
433 | ||
434 | $rule = "proxmoxfw-OUTPUT -j $chain"; | |
435 | if(iptables_rule_exist($rule)){ | |
436 | iptables_addrule("-D $rule"); | |
437 | } | |
438 | ||
439 | if(iptables_chain_exist($chain)){ | |
440 | iptables_addrule("-F $chain"); | |
441 | iptables_addrule("-X $chain"); | |
442 | } | |
443 | ||
444 | iptables_restore(); | |
445 | } | |
446 | ||
447 | sub generate_proxmoxfwinput { | |
448 | ||
449 | if(!iptables_chain_exist("proxmoxfw-INPUT")){ | |
450 | iptables_addrule(":proxmoxfw-INPUT - [0:0]"); | |
451 | iptables_addrule("-I INPUT -j proxmoxfw-INPUT"); | |
452 | iptables_addrule("-A INPUT -j ACCEPT"); | |
453 | } | |
454 | } | |
455 | ||
456 | sub generate_proxmoxfwoutput { | |
457 | ||
458 | if(!iptables_chain_exist("proxmoxfw-OUTPUT")){ | |
459 | iptables_addrule(":proxmoxfw-OUTPUT - [0:0]"); | |
460 | iptables_addrule("-I OUTPUT -j proxmoxfw-OUTPUT"); | |
461 | iptables_addrule("-A OUTPUT -j ACCEPT"); | |
462 | } | |
463 | ||
464 | } | |
465 | ||
466 | ||
dddd9413 DM |
467 | my $generate_input_rule = sub { |
468 | my ($zoneinfo, $rule, $net, $netid) = @_; | |
469 | ||
dddd9413 | 470 | my $zone = $net->{zone} || die "internal error"; |
a8195f4f | 471 | my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error"; |
dddd9413 | 472 | my $tap = $net->{tap} || die "internal error"; |
9aab3127 | 473 | |
8cebfa6f DM |
474 | my $dest = "$zid:$tap"; |
475 | ||
476 | if ($rule->{dest}) { | |
477 | $dest .= ":$rule->{dest}"; | |
478 | } | |
479 | ||
9aab3127 DM |
480 | my $action = $rule->{service} ? |
481 | "$rule->{service}($rule->{action})" : $rule->{action}; | |
482 | ||
b9b06789 | 483 | my $sources = []; |
8cebfa6f | 484 | |
b9b06789 DM |
485 | if (!$rule->{source}) { |
486 | push @$sources, 'all'; | |
487 | } elsif ($zoneinfo->{$zone}->{type} eq 'bport') { | |
8cebfa6f | 488 | my $bridge_zone = $zoneinfo->{$zone}->{bridge_zone} || die "internal error"; |
b9b06789 DM |
489 | my $zoneref = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error"; |
490 | ||
491 | # using 'all' does not work, so we create one rule for | |
492 | # each related zone on the same bridge | |
493 | push @$sources, "${zoneref}:$rule->{source}"; | |
494 | foreach my $z (keys %$zoneinfo) { | |
495 | next if $z eq $zone; | |
496 | next if !$zoneinfo->{$z}->{bridge_zone}; | |
497 | next if $zoneinfo->{$z}->{bridge_zone} ne $bridge_zone; | |
498 | $zoneref = $zoneinfo->{$z}->{zoneref} || die "internal error"; | |
499 | push @$sources, "${zoneref}:$rule->{source}"; | |
8cebfa6f DM |
500 | } |
501 | } else { | |
b9b06789 DM |
502 | push @$sources, "all:$rule->{source}"; |
503 | } | |
504 | ||
505 | my $out = ''; | |
506 | ||
507 | foreach my $source (@$sources) { | |
508 | $out .= sprintf($rule_format, $action, $source, $dest, $rule->{proto} || '-', | |
509 | $rule->{dport} || '-', $rule->{sport} || '-'); | |
8cebfa6f DM |
510 | } |
511 | ||
b9b06789 | 512 | return $out; |
dddd9413 DM |
513 | }; |
514 | ||
515 | my $generate_output_rule = sub { | |
516 | my ($zoneinfo, $rule, $net, $netid) = @_; | |
517 | ||
dddd9413 | 518 | my $zone = $net->{zone} || die "internal error"; |
a8195f4f | 519 | my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error"; |
dddd9413 | 520 | my $tap = $net->{tap} || die "internal error"; |
9aab3127 DM |
521 | |
522 | my $action = $rule->{service} ? | |
523 | "$rule->{service}($rule->{action})" : $rule->{action}; | |
dddd9413 | 524 | |
8cebfa6f DM |
525 | my $dest; |
526 | ||
527 | if (!$rule->{dest}) { | |
9a4644fa | 528 | $dest = 'all'; |
8cebfa6f | 529 | } else { |
9a4644fa | 530 | $dest = "all:$rule->{dest}"; |
8cebfa6f DM |
531 | } |
532 | ||
533 | return sprintf($rule_format, $action, "$zid:$tap", $dest, | |
dddd9413 DM |
534 | $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-'); |
535 | }; | |
536 | ||
b6360c3f DM |
537 | # we need complete VM configuration of all VMs (openvz/qemu) |
538 | # in vmdata | |
539 | ||
5e1267a5 | 540 | my $compile_shorewall = sub { |
dddd9413 | 541 | my ($targetdir, $vmdata, $rules) = @_; |
b6360c3f | 542 | |
80bfe1ff | 543 | # remove existing data ? |
a8195f4f | 544 | foreach my $file (qw(params zones rules interfaces maclist policy)) { |
80bfe1ff DM |
545 | unlink "$targetdir/$file"; |
546 | } | |
547 | ||
b6360c3f DM |
548 | my $netinfo; |
549 | ||
886aba9c DM |
550 | my $zoneinfo = { |
551 | fw => { type => 'firewall' }, | |
552 | }; | |
553 | ||
026a6466 DM |
554 | my $maclist = {}; |
555 | ||
35081236 DM |
556 | my $register_bridge; |
557 | ||
558 | $register_bridge = sub { | |
559 | my ($bridge, $vlan) = @_; | |
f789653a | 560 | |
1b6a0a59 | 561 | my $zone = $bridge; |
f789653a DM |
562 | |
563 | return $zone if $zoneinfo->{$zone}; | |
564 | ||
1b6a0a59 | 565 | my $ext_zone = "${bridge}_ext"; |
8cebfa6f | 566 | |
f789653a DM |
567 | $zoneinfo->{$zone} = { |
568 | type => 'bridge', | |
569 | bridge => $bridge, | |
8cebfa6f DM |
570 | bridge_ext_zone => $ext_zone, |
571 | }; | |
572 | ||
573 | # physical input devices | |
574 | my $dir = "/sys/class/net/$bridge/brif"; | |
575 | my $physical = {}; | |
576 | PVE::Tools::dir_glob_foreach($dir, '((eth|bond).+)', sub { | |
577 | my ($slave) = @_; | |
578 | $physical->{$slave} = 1; | |
579 | }); | |
580 | ||
581 | $zoneinfo->{$ext_zone} = { | |
582 | type => 'bport', | |
583 | bridge_zone => $zone, | |
584 | ifaces => $physical, | |
f789653a | 585 | }; |
35081236 DM |
586 | |
587 | return &$register_bridge("${bridge}v${vlan}") if defined($vlan); | |
588 | ||
589 | return $zone; | |
590 | }; | |
591 | ||
592 | my $register_bridge_port = sub { | |
593 | my ($bridge, $vlan, $vmzone, $tap) = @_; | |
594 | ||
595 | my $bridge_zone = &$register_bridge($bridge, $vlan); | |
1b6a0a59 | 596 | my $zone = $bridge_zone . '_' . $vmzone; |
35081236 DM |
597 | |
598 | if (!$zoneinfo->{$zone}) { | |
599 | $zoneinfo->{$zone} = { | |
600 | type => 'bport', | |
601 | bridge_zone => $bridge_zone, | |
602 | ifaces => {}, | |
603 | }; | |
604 | } | |
605 | ||
606 | $zoneinfo->{$zone}->{ifaces}->{$tap} = 1; | |
f789653a DM |
607 | |
608 | return $zone; | |
609 | }; | |
610 | ||
b6360c3f DM |
611 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
612 | $netinfo->{$vmid} = {}; | |
613 | my $conf = $vmdata->{qemu}->{$vmid}; | |
614 | foreach my $opt (keys %$conf) { | |
615 | next if $opt !~ m/^net(\d+)$/; | |
dddd9413 | 616 | my $netnum = $1; |
b6360c3f DM |
617 | my $net = PVE::QemuServer::parse_net($conf->{$opt}); |
618 | next if !$net; | |
886aba9c | 619 | die "implement me" if !$net->{bridge}; |
886aba9c | 620 | |
f789653a | 621 | my $vmzone = $conf->{zone} || "vm$vmid"; |
dddd9413 | 622 | $net->{tap} = "tap${vmid}i${netnum}"; |
026a6466 | 623 | $maclist->{$net->{tap}} = $net->{macaddr} || die "internal error"; |
dddd9413 DM |
624 | $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap}); |
625 | $netinfo->{$vmid}->{$opt} = $net; | |
886aba9c DM |
626 | } |
627 | } | |
628 | ||
629 | #print Dumper($netinfo); | |
630 | ||
f789653a | 631 | # NOTE: zone names have length limit, so we need to |
886aba9c DM |
632 | # translate them into shorter names |
633 | ||
f789653a DM |
634 | my $zoneid = 0; |
635 | my $zonemap = { fw => 'fw' }; | |
636 | ||
637 | my $lookup_zonename = sub { | |
638 | my ($zone) = @_; | |
639 | ||
640 | return $zonemap->{$zone} if defined($zonemap->{$zone}); | |
641 | $zonemap->{$zone} = 'z' . $zoneid++; | |
642 | ||
643 | return $zonemap->{$zone}; | |
644 | }; | |
645 | ||
dddd9413 DM |
646 | foreach my $z (sort keys %$zoneinfo) { |
647 | $zoneinfo->{$z}->{id} = &$lookup_zonename($z); | |
a8195f4f DM |
648 | $zoneinfo->{$z}->{zonevar} = uc($z); |
649 | $zoneinfo->{$z}->{zoneref} = '$' . $zoneinfo->{$z}->{zonevar}; | |
dddd9413 DM |
650 | } |
651 | ||
f789653a | 652 | my $out; |
886aba9c | 653 | |
a8195f4f DM |
654 | # dump params file |
655 | $out = "# PVE zones\n"; | |
656 | foreach my $z (sort keys %$zoneinfo) { | |
657 | $out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n"; | |
658 | } | |
659 | PVE::Tools::file_set_contents("$targetdir/params", $out); | |
660 | ||
661 | # dump zone file | |
662 | ||
663 | my $format = "%-30s %-10s %-15s\n"; | |
664 | $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS'); | |
f789653a | 665 | |
886aba9c | 666 | foreach my $z (sort keys %$zoneinfo) { |
a8195f4f | 667 | my $zid = $zoneinfo->{$z}->{zoneref}; |
f789653a | 668 | if ($zoneinfo->{$z}->{type} eq 'firewall') { |
a8195f4f | 669 | $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, ''); |
f789653a | 670 | } elsif ($zoneinfo->{$z}->{type} eq 'bridge') { |
a8195f4f | 671 | $out .= sprintf($format, $zid, 'ipv4', ''); |
f789653a DM |
672 | } elsif ($zoneinfo->{$z}->{type} eq 'bport') { |
673 | my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error"; | |
a8195f4f DM |
674 | my $bzid = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error"; |
675 | $out .= sprintf($format, "$zid:$bzid", 'bport', ''); | |
f789653a DM |
676 | } else { |
677 | die "internal error"; | |
678 | } | |
886aba9c DM |
679 | } |
680 | ||
f789653a DM |
681 | $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n"); |
682 | ||
683 | PVE::Tools::file_set_contents("$targetdir/zones", $out); | |
886aba9c | 684 | |
f789653a | 685 | # dump interfaces |
886aba9c | 686 | |
a8195f4f DM |
687 | $format = "%-25s %-20s %-10s %-15s\n"; |
688 | $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS'); | |
f789653a | 689 | |
026a6466 DM |
690 | my $maclist_format = "%-15s %-15s %-15s\n"; |
691 | my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE'); | |
692 | ||
886aba9c | 693 | foreach my $z (sort keys %$zoneinfo) { |
a8195f4f | 694 | my $zid = $zoneinfo->{$z}->{zoneref}; |
f789653a DM |
695 | if ($zoneinfo->{$z}->{type} eq 'firewall') { |
696 | # do nothing; | |
697 | } elsif ($zoneinfo->{$z}->{type} eq 'bridge') { | |
698 | my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error"; | |
a8195f4f | 699 | $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional'); |
f789653a DM |
700 | } elsif ($zoneinfo->{$z}->{type} eq 'bport') { |
701 | my $ifaces = $zoneinfo->{$z}->{ifaces}; | |
702 | foreach my $iface (sort keys %$ifaces) { | |
703 | my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error"; | |
704 | my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error"; | |
705 | my $iftxt = "$bridge:$iface"; | |
8cebfa6f DM |
706 | |
707 | if ($maclist->{$iface}) { | |
708 | $out .= sprintf($format, $zid, $iftxt, '-', 'maclist'); | |
709 | $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface}); | |
710 | } else { | |
711 | $out .= sprintf($format, $zid, $iftxt, '-', ''); | |
712 | } | |
f789653a DM |
713 | } |
714 | } else { | |
715 | die "internal error"; | |
b6360c3f DM |
716 | } |
717 | } | |
718 | ||
f789653a DM |
719 | $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n"); |
720 | ||
721 | PVE::Tools::file_set_contents("$targetdir/interfaces", $out); | |
722 | ||
026a6466 DM |
723 | # dump maclist |
724 | PVE::Tools::file_set_contents("$targetdir/maclist", $macs); | |
725 | ||
f789653a DM |
726 | # dump policy |
727 | ||
728 | $format = "%-15s %-15s %-15s %s\n"; | |
729 | $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG'); | |
8cebfa6f DM |
730 | $out .= sprintf($format, 'fw', 'all', 'ACCEPT', ''); |
731 | ||
732 | # we need to disable intra-zone traffic on bridges. Else traffic | |
733 | # from untracked interfaces simply pass the firewall | |
734 | foreach my $z (sort keys %$zoneinfo) { | |
735 | my $zid = $zoneinfo->{$z}->{zoneref}; | |
736 | if ($zoneinfo->{$z}->{type} eq 'bridge') { | |
737 | $out .= sprintf($format, $zid, $zid, 'REJECT', 'info'); | |
738 | } | |
739 | } | |
f789653a | 740 | $out .= sprintf($format, 'all', 'all', 'REJECT', 'info'); |
886aba9c | 741 | |
f789653a | 742 | PVE::Tools::file_set_contents("$targetdir/policy", $out); |
886aba9c | 743 | |
dddd9413 DM |
744 | # dump rules |
745 | $out = ''; | |
746 | ||
747 | $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT'); | |
748 | foreach my $vmid (sort keys %$rules) { | |
78db5872 DM |
749 | my $inrules = $rules->{$vmid}->{in}; |
750 | my $outrules = $rules->{$vmid}->{out}; | |
751 | ||
752 | if (scalar(@$inrules)) { | |
753 | $out .= "# IN to VM $vmid\n"; | |
dddd9413 DM |
754 | foreach my $rule (@$inrules) { |
755 | foreach my $netid (keys %{$netinfo->{$vmid}}) { | |
756 | my $net = $netinfo->{$vmid}->{$netid}; | |
9a4644fa | 757 | next if $rule->{iface} && $rule->{iface} ne $netid; |
dddd9413 DM |
758 | $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid); |
759 | } | |
760 | } | |
761 | } | |
762 | ||
78db5872 DM |
763 | if (scalar(@$outrules)) { |
764 | $out .= "# OUT from VM $vmid\n"; | |
dddd9413 DM |
765 | foreach my $rule (@$outrules) { |
766 | foreach my $netid (keys %{$netinfo->{$vmid}}) { | |
767 | my $net = $netinfo->{$vmid}->{$netid}; | |
9a4644fa | 768 | next if $rule->{iface} && $rule->{iface} ne $netid; |
dddd9413 DM |
769 | $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid); |
770 | } | |
771 | } | |
772 | } | |
773 | } | |
774 | ||
775 | PVE::Tools::file_set_contents("$targetdir/rules", $out); | |
5e1267a5 DM |
776 | }; |
777 | ||
778 | ||
779 | sub parse_fw_rules { | |
780 | my ($filename, $fh) = @_; | |
781 | ||
782 | my $section; | |
783 | ||
784 | my $res = { in => [], out => [] }; | |
785 | ||
fcba0beb DM |
786 | my $macros = get_shorewall_macros(); |
787 | my $protocols = get_etc_protocols(); | |
788 | ||
5e1267a5 DM |
789 | while (defined(my $line = <$fh>)) { |
790 | next if $line =~ m/^#/; | |
791 | next if $line =~ m/^\s*$/; | |
792 | ||
793 | if ($line =~ m/^\[(in|out)\]\s*$/i) { | |
794 | $section = lc($1); | |
795 | next; | |
796 | } | |
797 | next if !$section; | |
798 | ||
799 | my ($action, $iface, $source, $dest, $proto, $dport, $sport) = | |
800 | split(/\s+/, $line); | |
801 | ||
802 | if (!$action) { | |
803 | warn "skip incomplete line\n"; | |
804 | next; | |
805 | } | |
806 | ||
807 | my $service; | |
3a616aa0 | 808 | if ($action =~ m/^(ACCEPT|DROP|REJECT|GROUP-(\S+))$/) { |
5e1267a5 DM |
809 | # OK |
810 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
811 | ($service, $action) = ($1, $2); | |
812 | if (!$macros->{$service}) { | |
813 | warn "unknown service '$service'\n"; | |
814 | next; | |
815 | } | |
816 | } else { | |
817 | warn "unknown action '$action'\n"; | |
818 | next; | |
819 | } | |
820 | ||
821 | $iface = undef if $iface && $iface eq '-'; | |
822 | if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) { | |
823 | warn "unknown interface '$iface'\n"; | |
824 | next; | |
825 | } | |
826 | ||
827 | $proto = undef if $proto && $proto eq '-'; | |
fcba0beb DM |
828 | if ($proto && !(defined($protocols->{byname}->{$proto}) || |
829 | defined($protocols->{byid}->{$proto}))) { | |
5e1267a5 DM |
830 | warn "unknown protokol '$proto'\n"; |
831 | next; | |
832 | } | |
833 | ||
834 | $source = undef if $source && $source eq '-'; | |
5e1267a5 | 835 | $dest = undef if $dest && $dest eq '-'; |
5e1267a5 DM |
836 | |
837 | $dport = undef if $dport && $dport eq '-'; | |
838 | $sport = undef if $sport && $sport eq '-'; | |
4cdbb3b7 AD |
839 | my $nbdport = undef; |
840 | my $nbsport = undef; | |
d6de1dc2 AD |
841 | my $nbsource = undef; |
842 | my $nbdest = undef; | |
5e1267a5 | 843 | |
ecbea048 | 844 | eval { |
d6de1dc2 AD |
845 | $nbsource = parse_address_list($source) if $source; |
846 | $nbdest = parse_address_list($dest) if $dest; | |
4cdbb3b7 AD |
847 | $nbdport = parse_port_name_number_or_range($dport) if $dport; |
848 | $nbsport = parse_port_name_number_or_range($sport) if $sport; | |
ecbea048 DM |
849 | }; |
850 | if (my $err = $@) { | |
851 | warn $err; | |
852 | next; | |
853 | ||
854 | } | |
855 | ||
856 | ||
5e1267a5 DM |
857 | my $rule = { |
858 | action => $action, | |
859 | service => $service, | |
860 | iface => $iface, | |
861 | source => $source, | |
862 | dest => $dest, | |
d6de1dc2 AD |
863 | nbsource => $nbsource, |
864 | nbdest => $nbdest, | |
5e1267a5 DM |
865 | proto => $proto, |
866 | dport => $dport, | |
867 | sport => $sport, | |
4cdbb3b7 AD |
868 | nbdport => $nbdport, |
869 | nbsport => $nbsport, | |
870 | ||
5e1267a5 DM |
871 | }; |
872 | ||
873 | push @{$res->{$section}}, $rule; | |
874 | } | |
875 | ||
876 | return $res; | |
877 | } | |
878 | ||
879 | sub read_local_vm_config { | |
880 | ||
881 | my $openvz = {}; | |
882 | ||
883 | my $qemu = {}; | |
884 | ||
885 | my $list = PVE::QemuServer::config_list(); | |
886 | ||
887 | foreach my $vmid (keys %$list) { | |
b9b06789 | 888 | #next if !($vmid eq '100' || $vmid eq '102'); |
5e1267a5 DM |
889 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); |
890 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
891 | $qemu->{$vmid} = $conf; | |
892 | } | |
893 | } | |
894 | ||
895 | my $vmdata = { openvz => $openvz, qemu => $qemu }; | |
896 | ||
897 | return $vmdata; | |
898 | }; | |
899 | ||
900 | sub read_vm_firewall_rules { | |
901 | my ($vmdata) = @_; | |
902 | my $rules = {}; | |
903 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { | |
904 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
905 | my $fh = IO::File->new($filename, O_RDONLY); | |
906 | next if !$fh; | |
907 | ||
908 | $rules->{$vmid} = parse_fw_rules($filename, $fh); | |
909 | } | |
910 | ||
911 | return $rules; | |
912 | } | |
913 | ||
914 | sub compile { | |
915 | ||
916 | my $vmdata = read_local_vm_config(); | |
917 | my $rules = read_vm_firewall_rules($vmdata); | |
918 | ||
919 | # print Dumper($vmdata); | |
920 | ||
921 | my $swdir = '/etc/shorewall'; | |
922 | mkdir $swdir; | |
923 | ||
924 | &$compile_shorewall($swdir, $vmdata, $rules); | |
b6360c3f | 925 | |
5e1267a5 | 926 | PVE::Tools::run_command(['shorewall', 'compile']); |
b6360c3f DM |
927 | } |
928 | ||
5e1267a5 DM |
929 | sub compile_and_start { |
930 | my ($restart) = @_; | |
886aba9c | 931 | |
5e1267a5 | 932 | compile(); |
b6360c3f | 933 | |
5e1267a5 | 934 | PVE::Tools::run_command(['shorewall', $restart ? 'restart' : 'start']); |
b6360c3f DM |
935 | } |
936 | ||
937 | ||
938 | 1; |