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cleanup_fw_rule: only copy defined rule properties
[pve-firewall.git] / src / PVE / Firewall.pm
CommitLineData
b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
5use Data::Dumper;
09d5f68e 6use Digest::SHA;
c8301d63
DM		 7use PVE::INotify;
8use PVE::Cluster;
5f0a912c 9use PVE::ProcFSTools;
f789653a 10use PVE::Tools;
6b9f68a2 11use File::Basename;
5e1267a5
DM		 12use File::Path;
13use IO::File;
ecbea048 14use Net::IP;
06320eb0 15use PVE::Tools qw(run_command lock_file);
30c1ae52 16use Encode;
ecbea048 17
d9fee004
DM		 18# dynamically include PVE::QemuServer and PVE::OpenVZ
19# to avoid dependency problems
20my $have_qemu_server;
21eval {
22 require PVE::QemuServer;
23 $have_qemu_server = 1;
24};
25
26my $have_pve_manager;
27eval {
28 require PVE::OpenVZ;
29 $have_pve_manager = 1;
30};
31
5e1267a5 32use Data::Dumper;
b6360c3f 33
c8301d63
DM		 34my $nodename = PVE::INotify::nodename();
35
06320eb0 36my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
6b9f68a2 37my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status";
06320eb0 38
2d404ffc
DM		 39my $default_log_level = 'info';
40
41my $log_level_hash = {
42 debug => 7,
43 info => 6,
44 notice => 5,
45 warning => 4,
46 err => 3,
47 crit => 2,
48 alert => 1,
49 emerg => 0,
50};
51
857f62c8 52# imported/converted from: /usr/share/shorewall/macro.*
961b4928 53my $pve_fw_macros = {
857f62c8
DM		 54 'Amanda' => [
55 { action => 'PARAM', proto => 'udp', dport => '10080' },
56 { action => 'PARAM', proto => 'tcp', dport => '10080' },
57 ],
58 'Auth' => [
59 { action => 'PARAM', proto => 'tcp', dport => '113' },
60 ],
61 'BGP' => [
62 { action => 'PARAM', proto => 'tcp', dport => '179' },
63 ],
64 'BitTorrent' => [
961b4928 65 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 66 { action => 'PARAM', proto => 'udp', dport => '6881' },
67 ],
68 'BitTorrent32' => [
69 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
70 { action => 'PARAM', proto => 'udp', dport => '6881' },
71 ],
72 'CVS' => [
73 { action => 'PARAM', proto => 'tcp', dport => '2401' },
74 ],
75 'Citrix' => [
76 { action => 'PARAM', proto => 'tcp', dport => '1494' },
77 { action => 'PARAM', proto => 'udp', dport => '1604' },
78 { action => 'PARAM', proto => 'tcp', dport => '2598' },
79 ],
80 'DAAP' => [
81 { action => 'PARAM', proto => 'tcp', dport => '3689' },
82 { action => 'PARAM', proto => 'udp', dport => '3689' },
83 ],
84 'DCC' => [
85 { action => 'PARAM', proto => 'tcp', dport => '6277' },
86 ],
87 'DHCPfwd' => [
88 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
89 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' },
90 ],
91 'DNS' => [
92 { action => 'PARAM', proto => 'udp', dport => '53' },
93 { action => 'PARAM', proto => 'tcp', dport => '53' },
94 ],
95 'Distcc' => [
96 { action => 'PARAM', proto => 'tcp', dport => '3632' },
97 ],
98 'Edonkey' => [
99 { action => 'PARAM', proto => 'tcp', dport => '4662' },
100 { action => 'PARAM', proto => 'udp', dport => '4665' },
961b4928 101 ],
857f62c8
DM		 102 'FTP' => [
103 { action => 'PARAM', proto => 'tcp', dport => '21' },
104 ],
105 'Finger' => [
106 { action => 'PARAM', proto => 'tcp', dport => '79' },
107 ],
108 'GNUnet' => [
109 { action => 'PARAM', proto => 'tcp', dport => '2086' },
110 { action => 'PARAM', proto => 'udp', dport => '2086' },
111 { action => 'PARAM', proto => 'tcp', dport => '1080' },
112 { action => 'PARAM', proto => 'udp', dport => '1080' },
113 ],
114 'GRE' => [
115 { action => 'PARAM', proto => '47' },
116 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' },
117 ],
118 'Git' => [
119 { action => 'PARAM', proto => 'tcp', dport => '9418' },
120 ],
121 'Gnutella' => [
122 { action => 'PARAM', proto => 'tcp', dport => '6346' },
123 { action => 'PARAM', proto => 'udp', dport => '6346' },
124 ],
125 'HKP' => [
126 { action => 'PARAM', proto => 'tcp', dport => '11371' },
127 ],
128 'HTTP' => [
961b4928
DM		 129 { action => 'PARAM', proto => 'tcp', dport => '80' },
130 ],
857f62c8
DM		 131 'HTTPS' => [
132 { action => 'PARAM', proto => 'tcp', dport => '443' },
133 ],
134 'ICPV2' => [
135 { action => 'PARAM', proto => 'udp', dport => '3130' },
136 ],
137 'ICQ' => [
138 { action => 'PARAM', proto => 'tcp', dport => '5190' },
139 ],
140 'IMAP' => [
141 { action => 'PARAM', proto => 'tcp', dport => '143' },
142 ],
143 'IMAPS' => [
144 { action => 'PARAM', proto => 'tcp', dport => '993' },
145 ],
146 'IPIP' => [
147 { action => 'PARAM', proto => '94' },
148 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' },
149 ],
150 'IPP' => [
151 { action => 'PARAM', proto => 'tcp', dport => '631' },
152 ],
153 'IPPbrd' => [
154 { action => 'PARAM', proto => 'udp', dport => '631' },
155 ],
156 'IPPserver' => [
157 { action => 'PARAM', source => 'SOURCE', dest => 'DEST', proto => 'tcp', dport => '631' },
158 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '631' },
159 ],
160 'IPsec' => [
161 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
162 { action => 'PARAM', proto => '50' },
163 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' },
164 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' },
165 ],
166 'IPsecah' => [
167 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
168 { action => 'PARAM', proto => '51' },
169 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' },
170 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' },
171 ],
172 'IPsecnat' => [
173 { action => 'PARAM', proto => 'udp', dport => '500' },
174 { action => 'PARAM', proto => 'udp', dport => '4500' },
175 { action => 'PARAM', proto => '50' },
176 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' },
177 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' },
178 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' },
179 ],
180 'IRC' => [
181 { action => 'PARAM', proto => 'tcp', dport => '6667' },
182 ],
183 'JabberPlain' => [
184 { action => 'PARAM', proto => 'tcp', dport => '5222' },
185 ],
186 'JabberSecure' => [
187 { action => 'PARAM', proto => 'tcp', dport => '5223' },
188 ],
189 'Jabberd' => [
190 { action => 'PARAM', proto => 'tcp', dport => '5269' },
191 ],
192 'Jetdirect' => [
193 { action => 'PARAM', proto => 'tcp', dport => '9100' },
194 ],
195 'L2TP' => [
196 { action => 'PARAM', proto => 'udp', dport => '1701' },
197 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' },
198 ],
199 'LDAP' => [
200 { action => 'PARAM', proto => 'tcp', dport => '389' },
201 ],
202 'LDAPS' => [
203 { action => 'PARAM', proto => 'tcp', dport => '636' },
204 ],
205 'MSNP' => [
206 { action => 'PARAM', proto => 'tcp', dport => '1863' },
207 ],
208 'MSSQL' => [
209 { action => 'PARAM', proto => 'tcp', dport => '1433' },
210 ],
211 'Mail' => [
212 { action => 'PARAM', proto => 'tcp', dport => '25' },
213 { action => 'PARAM', proto => 'tcp', dport => '465' },
214 { action => 'PARAM', proto => 'tcp', dport => '587' },
215 ],
216 'Munin' => [
217 { action => 'PARAM', proto => 'tcp', dport => '4949' },
218 ],
219 'MySQL' => [
220 { action => 'PARAM', proto => 'tcp', dport => '3306' },
221 ],
222 'NNTP' => [
223 { action => 'PARAM', proto => 'tcp', dport => '119' },
224 ],
225 'NNTPS' => [
226 { action => 'PARAM', proto => 'tcp', dport => '563' },
227 ],
228 'NTP' => [
229 { action => 'PARAM', proto => 'udp', dport => '123' },
230 ],
231 'NTPbi' => [
232 { action => 'PARAM', proto => 'udp', dport => '123' },
233 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' },
234 ],
235 'NTPbrd' => [
236 { action => 'PARAM', proto => 'udp', dport => '123' },
237 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '123' },
238 ],
239 'OSPF' => [
240 { action => 'PARAM', proto => '89' },
241 ],
242 'OpenVPN' => [
243 { action => 'PARAM', proto => 'udp', dport => '1194' },
244 ],
245 'PCA' => [
246 { action => 'PARAM', proto => 'udp', dport => '5632' },
247 { action => 'PARAM', proto => 'tcp', dport => '5631' },
248 ],
249 'POP3' => [
250 { action => 'PARAM', proto => 'tcp', dport => '110' },
251 ],
252 'POP3S' => [
253 { action => 'PARAM', proto => 'tcp', dport => '995' },
254 ],
255 'PPtP' => [
256 { action => 'PARAM', proto => '47' },
257 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' },
258 { action => 'PARAM', proto => 'tcp', dport => '1723' },
259 ],
260 'Ping' => [
269d4f13 261 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 262 ],
263 'PostgreSQL' => [
264 { action => 'PARAM', proto => 'tcp', dport => '5432' },
265 ],
266 'Printer' => [
267 { action => 'PARAM', proto => 'tcp', dport => '515' },
268 ],
269 'RDP' => [
270 { action => 'PARAM', proto => 'tcp', dport => '3389' },
271 ],
272 'RIPbi' => [
273 { action => 'PARAM', proto => 'udp', dport => '520' },
274 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' },
275 ],
276 'RNDC' => [
277 { action => 'PARAM', proto => 'tcp', dport => '953' },
278 ],
279 'Razor' => [
280 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
281 ],
282 'Rdate' => [
283 { action => 'PARAM', proto => 'tcp', dport => '37' },
284 ],
285 'Rsync' => [
286 { action => 'PARAM', proto => 'tcp', dport => '873' },
287 ],
288 'SANE' => [
289 { action => 'PARAM', proto => 'tcp', dport => '6566' },
290 ],
291 'SMB' => [
292 { action => 'PARAM', proto => 'udp', dport => '135,445' },
293 { action => 'PARAM', proto => 'udp', dport => '137:139' },
294 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
295 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
296 ],
297 'SMBBI' => [
298 { action => 'PARAM', proto => 'udp', dport => '135,445' },
299 { action => 'PARAM', proto => 'udp', dport => '137:139' },
300 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
301 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
302 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' },
303 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' },
304 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' },
305 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' },
306 ],
307 'SMBswat' => [
308 { action => 'PARAM', proto => 'tcp', dport => '901' },
309 ],
310 'SMTP' => [
311 { action => 'PARAM', proto => 'tcp', dport => '25' },
312 ],
313 'SMTPS' => [
314 { action => 'PARAM', proto => 'tcp', dport => '465' },
315 ],
316 'SNMP' => [
317 { action => 'PARAM', proto => 'udp', dport => '161:162' },
318 { action => 'PARAM', proto => 'tcp', dport => '161' },
319 ],
320 'SPAMD' => [
321 { action => 'PARAM', proto => 'tcp', dport => '783' },
322 ],
323 'SSH' => [
324 { action => 'PARAM', proto => 'tcp', dport => '22' },
325 ],
326 'SVN' => [
327 { action => 'PARAM', proto => 'tcp', dport => '3690' },
328 ],
329 'SixXS' => [
330 { action => 'PARAM', proto => 'tcp', dport => '3874' },
331 { action => 'PARAM', proto => 'udp', dport => '3740' },
332 { action => 'PARAM', proto => '41' },
333 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
334 ],
335 'Squid' => [
336 { action => 'PARAM', proto => 'tcp', dport => '3128' },
337 ],
338 'Submission' => [
339 { action => 'PARAM', proto => 'tcp', dport => '587' },
340 ],
341 'Syslog' => [
342 { action => 'PARAM', proto => 'udp', dport => '514' },
343 { action => 'PARAM', proto => 'tcp', dport => '514' },
344 ],
345 'TFTP' => [
346 { action => 'PARAM', proto => 'udp', dport => '69' },
347 ],
348 'Telnet' => [
349 { action => 'PARAM', proto => 'tcp', dport => '23' },
350 ],
351 'Telnets' => [
352 { action => 'PARAM', proto => 'tcp', dport => '992' },
353 ],
354 'Time' => [
355 { action => 'PARAM', proto => 'tcp', dport => '37' },
356 ],
357 'Trcrt' => [
358 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 359 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 360 ],
361 'VNC' => [
362 { action => 'PARAM', proto => 'tcp', dport => '5900:5909' },
363 ],
364 'VNCL' => [
365 { action => 'PARAM', proto => 'tcp', dport => '5500' },
366 ],
367 'Web' => [
368 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 369 { action => 'PARAM', proto => 'tcp', dport => '443' },
370 ],
857f62c8
DM		 371 'Webcache' => [
372 { action => 'PARAM', proto => 'tcp', dport => '8080' },
373 ],
374 'Webmin' => [
375 { action => 'PARAM', proto => 'tcp', dport => '10000' },
376 ],
377 'Whois' => [
378 { action => 'PARAM', proto => 'tcp', dport => '43' },
379 ],
961b4928
DM		 380};
381
382my $pve_fw_parsed_macros;
383my $pve_fw_preferred_macro_names = {};
3a616aa0 384
d8f2505e
DM		 385my $pve_std_chains = {
386 'PVEFW-SET-ACCEPT-MARK' => [
387 "-j MARK --set-mark 1",
388 ],
79929d9c
DM		 389 'PVEFW-DropBroadcast' => [
390 # same as shorewall 'Broadcast'
391 # simply DROP BROADCAST/MULTICAST/ANYCAST
392 # we can use this to reduce logging
393 { action => 'DROP', dsttype => 'BROADCAST' },
394 { action => 'DROP', dsttype => 'MULTICAST' },
395 { action => 'DROP', dsttype => 'ANYCAST' },
396 { action => 'DROP', dest => '224.0.0.0/4' },
397 ],
398 'PVEFW-reject' => [
399 # same as shorewall 'reject'
400 { action => 'DROP', dsttype => 'BROADCAST' },
401 { action => 'DROP', source => '224.0.0.0/4' },
402 { action => 'DROP', proto => 'icmp' },
403 "-p tcp -j REJECT --reject-with tcp-reset",
404 "-p udp -j REJECT --reject-with icmp-port-unreachable",
405 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
406 "-j REJECT --reject-with icmp-host-prohibited",
407 ],
408 'PVEFW-Drop' => [
409 # same as shorewall 'Drop', which is equal to DROP,
410 # but REJECT/DROP some packages to reduce logging,
411 # and ACCEPT critical ICMP types
412 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
413 # we are not interested in BROADCAST/MULTICAST/ANYCAST
414 { action => 'PVEFW-DropBroadcast' },
415 # ACCEPT critical ICMP types
416 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
417 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
418 # Drop packets with INVALID state
419 "-m conntrack --ctstate INVALID -j DROP",
420 # Drop Microsoft SMB noise
421 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
422 { action => 'DROP', proto => 'udp', dport => '137:139'},
423 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
424 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
425 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
426 # Drop new/NotSyn traffic so that it doesn't get logged
427 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
428 # Drop DNS replies
429 { action => 'DROP', proto => 'udp', sport => 53 },
430 ],
431 'PVEFW-Reject' => [
432 # same as shorewall 'Reject', which is equal to Reject,
433 # but REJECT/DROP some packages to reduce logging,
434 # and ACCEPT critical ICMP types
435 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
436 # we are not interested in BROADCAST/MULTICAST/ANYCAST
437 { action => 'PVEFW-DropBroadcast' },
438 # ACCEPT critical ICMP types
439 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
440 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
441 # Drop packets with INVALID state
442 "-m conntrack --ctstate INVALID -j DROP",
443 # Drop Microsoft SMB noise
444 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
445 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
446 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
447 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
448 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
449 # Drop new/NotSyn traffic so that it doesn't get logged
450 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
451 # Drop DNS replies
452 { action => 'DROP', proto => 'udp', sport => 53 },
453 ],
d86659ef
DM		 454 'PVEFW-tcpflags' => [
455 # same as shorewall tcpflags action.
456 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
457 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
458 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
459 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
460 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
461 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
462 ],
bee633ab
DM		 463 'PVEFW-smurfs' => [
464 # same as shorewall smurfs action
465 # Filter packets for smurfs (packets with a broadcast address as the source).
466 "-s 0.0.0.0/32 -j RETURN",
467 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
468 "-s 224.0.0.0/4 -g PVEFW-smurflog",
469 ],
d8f2505e
DM		 470};
471
4b586518
DM		 472# iptables -p icmp -h
473my $icmp_type_names = {
474 any => 1,
475 'echo-reply' => 1,
476 'destination-unreachable' => 1,
477 'network-unreachable' => 1,
478 'host-unreachable' => 1,
479 'protocol-unreachable' => 1,
480 'port-unreachable' => 1,
481 'fragmentation-needed' => 1,
482 'source-route-failed' => 1,
483 'network-unknown' => 1,
484 'host-unknown' => 1,
485 'network-prohibited' => 1,
486 'host-prohibited' => 1,
487 'TOS-network-unreachable' => 1,
488 'TOS-host-unreachable' => 1,
489 'communication-prohibited' => 1,
490 'host-precedence-violation' => 1,
491 'precedence-cutoff' => 1,
492 'source-quench' => 1,
493 'redirect' => 1,
494 'network-redirect' => 1,
495 'host-redirect' => 1,
496 'TOS-network-redirect' => 1,
497 'TOS-host-redirect' => 1,
498 'echo-request' => 1,
499 'router-advertisement' => 1,
500 'router-solicitation' => 1,
501 'time-exceeded' => 1,
502 'ttl-zero-during-transit' => 1,
503 'ttl-zero-during-reassembly' => 1,
504 'parameter-problem' => 1,
505 'ip-header-bad' => 1,
506 'required-option-missing' => 1,
507 'timestamp-request' => 1,
508 'timestamp-reply' => 1,
509 'address-mask-request' => 1,
510 'address-mask-reply' => 1,
511};
512
a332200b 513sub get_firewall_macros {
9aab3127 514
961b4928 515 return $pve_fw_parsed_macros if $pve_fw_parsed_macros;
6158271d 516
961b4928 517 $pve_fw_parsed_macros = {};
9aab3127 518
961b4928 519 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 520 my $lc_name = lc($k);
521 my $macro = $pve_fw_macros->{$k};
522 $pve_fw_preferred_macro_names->{$lc_name} = $k;
523 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 524 }
a332200b 525
961b4928 526 return $pve_fw_parsed_macros;
9aab3127
DM		 527}
528
fcba0beb
DM		 529my $etc_services;
530
531sub get_etc_services {
532
533 return $etc_services if $etc_services;
534
535 my $filename = "/etc/services";
536
537 my $fh = IO::File->new($filename, O_RDONLY);
538 if (!$fh) {
539 warn "unable to read '$filename' - $!\n";
540 return {};
541 }
542
543 my $services = {};
544
545 while (my $line = <$fh>) {
546 chomp ($line);
547 next if $line =~m/^#/;
548 next if ($line =~m/^\s*$/);
549
550 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
551 $services->{byid}->{$2}->{name} = $1;
35b66e9d 552 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 553 $services->{byid}->{$2}->{$3} = 1;
554 $services->{byname}->{$1} = $services->{byid}->{$2};
555 }
556 }
557
558 close($fh);
559
6158271d
DM		 560 $etc_services = $services;
561
3a616aa0 562
fcba0beb
DM		 563 return $etc_services;
564}
565
566my $etc_protocols;
567
568sub get_etc_protocols {
569 return $etc_protocols if $etc_protocols;
570
571 my $filename = "/etc/protocols";
572
573 my $fh = IO::File->new($filename, O_RDONLY);
574 if (!$fh) {
575 warn "unable to read '$filename' - $!\n";
576 return {};
577 }
578
579 my $protocols = {};
580
581 while (my $line = <$fh>) {
582 chomp ($line);
583 next if $line =~m/^#/;
584 next if ($line =~m/^\s*$/);
585
586 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
587 $protocols->{byid}->{$2}->{name} = $1;
588 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
589 }
590 }
591
592 close($fh);
593
594 $etc_protocols = $protocols;
595
596 return $etc_protocols;
597}
598
ecbea048
DM		 599sub parse_address_list {
600 my ($str) = @_;
601
d6de1dc2 602 my $nbaor = 0;
ecbea048
DM		 603 foreach my $aor (split(/,/, $str)) {
604 if (!Net::IP->new($aor)) {
605 my $err = Net::IP::Error();
606 die "invalid IP address: $err\n";
d6de1dc2
AD		 607 }else{
608 $nbaor++;
ecbea048
DM		 609 }
610 }
d6de1dc2 611 return $nbaor;
ecbea048 612}
dddd9413 613
fcba0beb
DM		 614sub parse_port_name_number_or_range {
615 my ($str) = @_;
616
617 my $services = PVE::Firewall::get_etc_services();
4cdbb3b7 618 my $nbports = 0;
fcba0beb 619 foreach my $item (split(/,/, $str)) {
4cdbb3b7 620 my $portlist = "";
35b66e9d 621 my $oldpon = undef;
4b586518 622 $nbports++;
fcba0beb 623 foreach my $pon (split(':', $item, 2)) {
35b66e9d 624 $pon = $services->{byname}->{$pon}->{port} if $services->{byname}->{$pon}->{port};
4cdbb3b7 625 if ($pon =~ m/^\d+$/){
857f62c8 626 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535;
35b66e9d
AD		 627 die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon);
628 $oldpon = $pon;
4cdbb3b7
AD		 629 }else{
630 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon};
631 }
fcba0beb
DM		 632 }
633 }
634
4cdbb3b7 635 return ($nbports);
fcba0beb
DM		 636}
637
d1c53b3e 638# helper function for API
d1c53b3e 639
9c7e0858
DM		 640my $rule_properties = {
641 pos => {
642 description => "Update rule at position <pos>.",
643 type => 'integer',
644 minimum => 0,
645 optional => 1,
646 },
647 digest => {
648 type => 'string',
649 optional => 1,
650 },
651 type => {
652 type => 'string',
653 optional => 1,
654 enum => ['in', 'out', 'group'],
655 },
656 action => {
657 type => 'string',
658 optional => 1,
659 },
e5076eee
DM		 660 macro => {
661 type => 'string',
662 optional => 1,
663 },
9c7e0858
DM		 664 source => {
665 type => 'string',
666 optional => 1,
667 },
668 dest => {
669 type => 'string',
670 optional => 1,
671 },
672 proto => {
673 type => 'string',
674 optional => 1,
675 },
676 enable => {
677 type => 'boolean',
678 optional => 1,
679 },
680 sport => {
681 type => 'string',
682 optional => 1,
683 },
684 dport => {
685 type => 'string',
686 optional => 1,
687 },
688 comment => {
689 type => 'string',
690 optional => 1,
691 },
692};
693
ce36326d
DM		 694sub cleanup_fw_rule {
695 my ($rule, $digest, $pos) = @_;
696
697 my $r = {};
698
699 foreach my $k (keys %$rule) {
700 next if !$rule_properties->{$k};
701 my $v = $rule->{$k};
702 next if !defined($v);
703 $r->{$k} = $v;
704 $r->{digest} = $digest;
705 $r->{pos} = $pos;
706 }
707
708 return $r;
709}
710
9c7e0858
DM		 711sub add_rule_properties {
712 my ($properties) = @_;
713
714 foreach my $k (keys %$rule_properties) {
715 $properties->{$k} = $rule_properties->{$k};
716 }
717
718 return $properties;
719}
720
721sub copy_rule_data {
722 my ($rule, $param) = @_;
723
724 foreach my $k (keys %$rule_properties) {
725 if (defined(my $v = $param->{$k})) {
726 if ($v eq '' || $v eq '-') {
727 delete $rule->{$k};
728 } else {
729 $rule->{$k} = $v;
730 }
731 } else {
732 delete $rule->{$k};
733 }
734 }
735 return $rule;
736}
737
738# core functions
780bcc0f
DM		 739my $bridge_firewall_enabled = 0;
740
741sub enable_bridge_firewall {
742
743 return if $bridge_firewall_enabled; # only once
744
5f0a912c
DM		 745 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
746 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 747
6a8a75db
DM		 748 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
749 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
750
780bcc0f
DM		 751 $bridge_firewall_enabled = 1;
752}
753
8cebfa6f 754my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 755
3a616aa0
AD		 756sub iptables {
757 my ($cmd) = @_;
758
759 run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {});
760}
761
b16e818e
DM		 762sub iptables_restore_cmdlist {
763 my ($cmdlist) = @_;
3a616aa0 764
3fa83edf 765 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 766}
767
de2a57cd
DM		 768sub iptables_get_chains {
769
770 my $res = {};
771
772 # check what chains we want to track
773 my $is_pvefw_chain = sub {
774 my $name = shift;
775
dec84fcd
DM		 776 return 1 if $name =~ m/^PVEFW-\S+$/;
777
de2a57cd 778 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 779
780 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
781
9e15114a
DM		 782 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
783
da6fc60b 784 return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/;
f50656c2 785 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 786
787 return undef;
788 };
789
790 my $table = '';
791
de2a57cd
DM		 792 my $parser = sub {
793 my $line = shift;
794
795 return if $line =~ m/^#/;
796 return if $line =~ m/^\s*$/;
797
798 if ($line =~ m/^\*(\S+)$/) {
799 $table = $1;
800 return;
801 }
802
803 return if $table ne 'filter';
804
805 if ($line =~ m/^:(\S+)\s/) {
806 my $chain = $1;
807 return if !&$is_pvefw_chain($chain);
3fa83edf 808 $res->{$chain} = "unknown";
09d5f68e 809 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 810 my ($chain, $sig) = ($1, $2);
de2a57cd 811 return if !&$is_pvefw_chain($chain);
3fa83edf 812 $res->{$chain} = $sig;
de2a57cd
DM		 813 } else {
814 # simply ignore the rest
815 return;
816 }
817 };
818
819 run_command("/sbin/iptables-save", outfunc => $parser);
820
de2a57cd
DM		 821 return $res;
822}
823
3a616aa0
AD		 824sub iptables_chain_exist {
825 my ($chain) = @_;
826
827 eval{
828 iptables("-n --list $chain");
829 };
830 return undef if $@;
831
832 return 1;
833}
834
835sub iptables_rule_exist {
836 my ($rule) = @_;
837
838 eval{
839 iptables("-C $rule");
840 };
841 return undef if $@;
842
843 return 1;
844}
845
eba0fb64 846sub ruleset_generate_cmdstr {
2f906466 847 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
3a616aa0 848
00bb4391 849 return if defined($rule->{enable}) && !$rule->{enable};
11bac5c2 850
e5076eee
DM		 851 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
852
853 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
854 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
855 my $nbsource = $rule->{source} ? parse_address_list( $rule->{source}) : 0;
856 my $nbdest = $rule->{dest} ? parse_address_list($rule->{dest}) : 0;
857
41524a58 858 my @cmd = ();
3a616aa0 859
eba0fb64
DM		 860 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
861 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
862
e5076eee 863 push @cmd, "-m iprange --src-range" if $nbsource > 1;
41524a58 864 push @cmd, "-s $rule->{source}" if $rule->{source};
e5076eee 865 push @cmd, "-m iprange --dst-range" if $nbdest > 1;
41524a58 866 push @cmd, "-d $rule->{dest}" if $rule->{dest};
4b586518 867
181390b0 868 if ($rule->{proto}) {
41524a58 869 push @cmd, "-p $rule->{proto}";
e3a1d391 870
181390b0 871 my $multiport = 0;
e5076eee
DM		 872 $multiport++ if $nbdport > 1;
873 $multiport++ if $nbsport > 1;
e3a1d391 874
41524a58 875 push @cmd, "--match multiport" if $multiport;
4b586518 876
181390b0
DM		 877 die "multiport: option '--sports' cannot be used together with '--dports'\n"
878 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
879
880 if ($rule->{dport}) {
881 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
882 # Note: we use dport to store --icmp-type
883 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 884 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 885 } else {
e5076eee 886 if ($nbdport > 1) {
181390b0 887 if ($multiport == 2) {
41524a58 888 push @cmd, "--ports $rule->{dport}";
181390b0 889 } else {
41524a58 890 push @cmd, "--dports $rule->{dport}";
181390b0 891 }
e3a1d391 892 } else {
41524a58 893 push @cmd, "--dport $rule->{dport}";
e3a1d391 894 }
4b586518
DM		 895 }
896 }
4b586518 897
181390b0 898 if ($rule->{sport}) {
e5076eee 899 if ($nbsport > 1) {
41524a58 900 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 901 } else {
41524a58 902 push @cmd, "--sport $rule->{sport}";
181390b0 903 }
4b586518 904 }
181390b0
DM		 905 } elsif ($rule->{dport} || $rule->{sport}) {
906 warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport};
907 warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport};
4b586518
DM		 908 }
909
41524a58 910 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 911
912 if (my $action = $rule->{action}) {
2f906466 913 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 914 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 915 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 916 }
3a616aa0 917
eba0fb64
DM		 918 return scalar(@cmd) ? join(' ', @cmd) : undef;
919}
920
e5076eee
DM		 921my $apply_macro = sub {
922 my ($macro_name, $param) = @_;
923
924 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
925 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
926
927 my $rules = [];
928
929 foreach my $templ (@$macro_rules) {
930 my $rule = {};
931 my $param_used = {};
932 foreach my $k (keys %$templ) {
933 my $v = $templ->{$k};
934 if ($v eq 'PARAM') {
935 $v = $param->{$k};
936 $param_used->{$k} = 1;
937 } elsif ($v eq 'DEST') {
938 $v = $param->{dest};
939 $param_used->{dest} = 1;
940 } elsif ($v eq 'SOURCE') {
941 $v = $param->{source};
942 $param_used->{source} = 1;
943 }
944
945 die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v);
946 $rule->{$k} = $v;
947 }
948 foreach my $k (keys %$param) {
949 next if $k eq 'macro';
950 next if !defined($param->{$k});
951 next if $param_used->{$k};
952 if (defined($rule->{$k})) {
953 die "parameter '$k' already define in macro (value = '$rule->{$k}')\n"
954 if $rule->{$k} ne $param->{$k};
955 } else {
956 $rule->{$k} = $param->{$k};
957 }
958 }
959 push @$rules, $rule;
960 }
961
962 return $rules;
963};
964
eba0fb64
DM		 965sub ruleset_generate_rule {
966 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
967
e5076eee
DM		 968 my $rules;
969
970 if ($rule->{macro}) {
971 $rules = &$apply_macro($rule->{macro}, $rule);
972 } else {
973 $rules = [ $rule ];
974 }
975
976 foreach my $tmp (@$rules) {
977 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto)) {
978 ruleset_addrule($ruleset, $chain, $cmdstr);
979 }
41524a58 980 }
3fa83edf 981}
0f168d7b 982
eba0fb64
DM		 983sub ruleset_generate_rule_insert {
984 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
985
e5076eee
DM		 986 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
987
eba0fb64
DM		 988 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
989 ruleset_insertrule($ruleset, $chain, $cmdstr);
990 }
991}
3fa83edf
DM		 992
993sub ruleset_create_chain {
994 my ($ruleset, $chain) = @_;
3a616aa0 995
d050c724 996 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 997 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 998
3fa83edf
DM		 999 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1000
1001 $ruleset->{$chain} = [];
3a616aa0
AD		 1002}
1003
3fa83edf
DM		 1004sub ruleset_chain_exist {
1005 my ($ruleset, $chain) = @_;
3a616aa0 1006
3fa83edf
DM		 1007 return $ruleset->{$chain} ? 1 : undef;
1008}
3a616aa0 1009
3fa83edf
DM		 1010sub ruleset_addrule {
1011 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1012
3fa83edf 1013 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1014
3fa83edf
DM		 1015 push @{$ruleset->{$chain}}, "-A $chain $rule";
1016}
3a616aa0 1017
3fa83edf
DM		 1018sub ruleset_insertrule {
1019 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1020
3fa83edf 1021 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1022
3fa83edf
DM		 1023 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1024}
3a616aa0 1025
782c4cde
DM		 1026sub get_log_rule_base {
1027 my ($chain, $vmid, $msg, $loglevel) = @_;
1028
1029 die "internal error - no log level" if !defined($loglevel);
1030
1031 $vmid = 0 if !defined($vmid);
1032
1033 # Note: we use special format for prefix to pass further
1034 # info to log daemon (VMID, LOGVELEL and CHAIN)
1035
1036 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1037}
1038
1039sub ruleset_addlog {
1040 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1041
1042 return if !defined($loglevel);
1043
1044 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1045
1046 $logrule = "$rule $logrule" if defined($rule);
1047
1048 ruleset_addrule($ruleset, $chain, $logrule)
1049}
1050
3fa83edf 1051sub generate_bridge_chains {
530c005e
DM		 1052 my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_;
1053
1054 my $options = $hostfw_conf->{options} || {};
1055
1056 die "error: detected direct route to bridge '$bridge'\n"
1057 if !$options->{allow_bridge_route} && $routing_table->{$bridge};
2f3d8d76 1058
5927497d
DM		 1059 if (!ruleset_chain_exist($ruleset, "$bridge-FW")) {
1060 ruleset_create_chain($ruleset, "$bridge-FW");
3cc81077
DM		 1061 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW");
1062 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW");
3fa83edf 1063 }
3a616aa0 1064
3fa83edf
DM		 1065 if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) {
1066 ruleset_create_chain($ruleset, "$bridge-OUT");
3cc81077
DM		 1067 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT");
1068 ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT");
9fcad984
AD		 1069 }
1070
1071 if (!ruleset_chain_exist($ruleset, "$bridge-IN")) {
1072 ruleset_create_chain($ruleset, "$bridge-IN");
3cc81077 1073 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN");
fdb0bf20 1074 ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT");
7323008d 1075 # accept traffic to unmanaged bridge ports
3cc81077 1076 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT ");
3fa83edf
DM		 1077 }
1078}
3a616aa0 1079
ead850e8 1080sub ruleset_add_chain_policy {
782c4cde 1081 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1082
1083 if ($policy eq 'ACCEPT') {
1084
1085 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1086 { ACCEPT => $accept_action});
1087
1088 } elsif ($policy eq 'DROP') {
1089
1090 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1091
782c4cde 1092 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1093
1094 ruleset_addrule($ruleset, $chain, "-j DROP");
1095 } elsif ($policy eq 'REJECT') {
1096 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1097
782c4cde 1098 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1099
1100 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1101 } else {
1102 # should not happen
1103 die "internal error: unknown policy '$policy'";
1104 }
1105}
1106
9e15114a
DM		 1107sub ruleset_create_vm_chain {
1108 my ($ruleset, $chain, $options, $macaddr, $direction) = @_;
3a616aa0 1109
9e15114a 1110 ruleset_create_chain($ruleset, $chain);
b47ecc88 1111 my $accept = generate_nfqueue($options);
3a616aa0 1112
bee633ab 1113 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
9e15114a 1114 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
bee633ab
DM		 1115 }
1116
ce15d90b 1117 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1118 if ($direction eq 'OUT') {
0f168d7b
DM		 1119 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
1120 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1121 } else {
0f168d7b
DM		 1122 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
1123 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1124 }
ce15d90b
DM		 1125 }
1126
bee633ab 1127 if ($options->{tcpflags}) {
9e15114a 1128 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
bee633ab
DM		 1129 }
1130
9e15114a 1131 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
b47ecc88
AD		 1132 if($direction eq 'OUT'){
1133 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK");
3a616aa0 1134
b47ecc88
AD		 1135 }else{
1136 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1137 }
b21aca2c
DM		 1138 if ($direction eq 'OUT') {
1139 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1140 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1141 }
9e15114a 1142 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1143 }
b47ecc88
AD		 1144
1145
9e15114a
DM		 1146}
1147
1148sub ruleset_generate_vm_rules {
b47ecc88 1149 my ($ruleset, $rules, $groups_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1150
1151 my $lc_direction = lc($direction);
c29f55c9 1152
92e976b3
DM		 1153 foreach my $rule (@$rules) {
1154 next if $rule->{iface} && $rule->{iface} ne $netid;
ea9e5116 1155 next if !$rule->{enable};
92e976b3
DM		 1156 if ($rule->{type} eq 'group') {
1157 my $group_chain = "GROUP-$rule->{action}-$direction";
1158 if(!ruleset_chain_exist($ruleset, $group_chain)){
1159 generate_group_rules($ruleset, $groups_conf, $rule->{action});
1160 }
9e15114a 1161 ruleset_addrule($ruleset, $chain, "-j $group_chain");
b47ecc88
AD		 1162 if ($direction eq 'OUT'){
1163 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN");
1164 }else{
1165 my $accept = generate_nfqueue($options);
1166 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept");
1167 }
1168
92e976b3
DM		 1169 } else {
1170 next if $rule->{type} ne $lc_direction;
1171 if ($direction eq 'OUT') {
9e15114a 1172 ruleset_generate_rule($ruleset, $chain, $rule,
92e976b3 1173 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
4e6112f9 1174 } else {
b47ecc88
AD		 1175 my $accept = generate_nfqueue($options);
1176 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" });
3a616aa0 1177 }
4e6112f9 1178 }
3a616aa0 1179 }
9e15114a
DM		 1180}
1181
b47ecc88
AD		 1182sub generate_nfqueue {
1183 my ($options) = @_;
1184
1185 my $action = "";
1186 if($options->{ips}){
1187 $action = "NFQUEUE";
1188 if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1189 if(defined($3) && defined($1)) {
1190 $action .= " --queue-balance $1:$3";
1191 }elsif (defined($1)) {
1192 $action .= " --queue-num $1";
1193 }
1194 }
1195 $action .= " --queue-bypass";
1196 }else{
1197 $action = "ACCEPT";
1198 }
1199
1200 return $action;
1201}
1202
da6fc60b
AD		 1203sub ruleset_generate_vm_ipsrules {
1204 my ($ruleset, $options, $direction, $iface, $bridge) = @_;
1205
1206 if ($options->{ips} && $direction eq 'IN') {
1207 my $nfqueue = generate_nfqueue($options);
1208
1209 if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) {
1210 ruleset_create_chain($ruleset, "PVEFW-IPS");
1211 }
1212
1213 if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) {
1214 ruleset_create_chain($ruleset, "$bridge-IPS");
1215 ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS");
1216 }
1217
1218 ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
1219 }
1220}
1221
9e15114a
DM		 1222sub generate_venet_rules_direction {
1223 my ($ruleset, $groups_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
1224
5176619e 1225 parse_address_list($ip); # make sure we have a valid $ip list
9e15114a
DM		 1226
1227 my $lc_direction = lc($direction);
1228
1229 my $rules = $vmfw_conf->{rules};
1230
1231 my $options = $vmfw_conf->{options};
1232 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1233
1234 my $chain = "venet0-$vmid-$direction";
1235
1236 ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction);
1237
1238 ruleset_generate_vm_rules($ruleset, $rules, $groups_conf, $chain, 'venet', $direction);
1239
1240 # implement policy
1241 my $policy;
1242
1243 if ($direction eq 'OUT') {
1244 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1245 } else {
1246 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1247 }
1248
b47ecc88
AD		 1249 my $accept = generate_nfqueue($options);
1250 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1251 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1252
38485daa 1253 # plug into FORWARD, INPUT and OUTPUT chain
eba0fb64
DM		 1254 if ($direction eq 'OUT') {
1255 ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", {
1256 action => $chain,
1257 source => $ip,
1258 iface_in => 'venet0'});
38485daa
DM		 1259
1260 ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", {
1261 action => $chain,
1262 source => $ip,
1263 iface_in => 'venet0'});
eba0fb64
DM		 1264 } else {
1265 ruleset_generate_rule($ruleset, "PVEFW-FORWARD", {
1266 action => $chain,
1267 dest => $ip,
1268 iface_out => 'venet0'});
38485daa
DM		 1269
1270 ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", {
1271 action => $chain,
1272 dest => $ip,
1273 iface_out => 'venet0'});
eba0fb64 1274 }
9e15114a
DM		 1275}
1276
1277sub generate_tap_rules_direction {
782c4cde 1278 my ($ruleset, $groups_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_;
9e15114a
DM		 1279
1280 my $lc_direction = lc($direction);
1281
1282 my $rules = $vmfw_conf->{rules};
1283
1284 my $options = $vmfw_conf->{options};
1285 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1286
1287 my $tapchain = "$iface-$direction";
1288
1289 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction);
1290
b47ecc88 1291 ruleset_generate_vm_rules($ruleset, $rules, $groups_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1292
da6fc60b
AD		 1293 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge);
1294
ccae0b50
DM		 1295 # implement policy
1296 my $policy;
1297
1298 if ($direction eq 'OUT') {
72f63fde 1299 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1300 } else {
72f63fde 1301 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1302 }
1303
b47ecc88
AD		 1304 my $accept = generate_nfqueue($options);
1305 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1306 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1307
3fa83edf 1308 # plug the tap chain to bridge chain
3cc81077
DM		 1309 if ($direction eq 'IN') {
1310 ruleset_insertrule($ruleset, "$bridge-IN",
1311 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
1312 } else {
1313 ruleset_insertrule($ruleset, "$bridge-OUT",
1314 "-m physdev --physdev-in $iface -j $tapchain");
1315 }
3a616aa0
AD		 1316}
1317
d18c1e2b 1318sub enable_host_firewall {
92e976b3 1319 my ($ruleset, $hostfw_conf, $groups_conf) = @_;
0bd5f137 1320
51bae274 1321 # fixme: allow security groups
0bd5f137 1322
92e976b3
DM		 1323 my $options = $hostfw_conf->{options};
1324 my $rules = $hostfw_conf->{rules};
178a63be 1325
3fa83edf 1326 # host inbound firewall
dec84fcd
DM		 1327 my $chain = "PVEFW-HOST-IN";
1328 ruleset_create_chain($ruleset, $chain);
0bd5f137 1329
178a63be
DM		 1330 my $loglevel = get_option_log_level($options, "log_level_in");
1331
4ac863a6
DM		 1332 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1333 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1334 }
1335
fb424a00
DM		 1336 if ($options->{tcpflags}) {
1337 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1338 }
1339
7fab95bc
DM		 1340 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1341 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
dec84fcd
DM		 1342 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
1343 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1344 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1345 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1346
23e888f8
DM		 1347 # we use RETURN because we need to check also tap rules
1348 my $accept_action = 'RETURN';
1349
92e976b3
DM		 1350 foreach my $rule (@$rules) {
1351 next if $rule->{type} ne 'in';
23e888f8 1352 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
0bd5f137
AD		 1353 }
1354
23e888f8 1355 # implement input policy
72f63fde 1356 my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1357 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1358
3fa83edf 1359 # host outbound firewall
aadd745e 1360 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1361 ruleset_create_chain($ruleset, $chain);
1362
178a63be
DM		 1363 $loglevel = get_option_log_level($options, "log_level_out");
1364
7fab95bc
DM		 1365 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1366 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
dec84fcd
DM		 1367 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
1368 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1369 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1370 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1371
23e888f8
DM		 1372 # we use RETURN because we may want to check other thigs later
1373 $accept_action = 'RETURN';
1374
92e976b3
DM		 1375 foreach my $rule (@$rules) {
1376 next if $rule->{type} ne 'out';
23e888f8 1377 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
0bd5f137
AD		 1378 }
1379
23e888f8 1380 # implement output policy
72f63fde 1381 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1382 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1383
dec84fcd
DM		 1384 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1385 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1386}
1387
1388sub generate_group_rules {
92e976b3 1389 my ($ruleset, $groups_conf, $group) = @_;
ac7648e0 1390 die "no such security group '$group'\n" if !$groups_conf->{rules}->{$group};
9d31b418 1391
8f119284 1392 my $rules = $groups_conf->{rules}->{$group};
6158271d 1393
3fa83edf 1394 my $chain = "GROUP-${group}-IN";
9d31b418 1395
3fa83edf 1396 ruleset_create_chain($ruleset, $chain);
b47ecc88 1397 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1398
92e976b3
DM		 1399 foreach my $rule (@$rules) {
1400 next if $rule->{type} ne 'in';
b47ecc88 1401 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
9d31b418
AD		 1402 }
1403
3fa83edf 1404 $chain = "GROUP-${group}-OUT";
9d31b418 1405
3fa83edf 1406 ruleset_create_chain($ruleset, $chain);
4e6112f9 1407 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1408
92e976b3
DM		 1409 foreach my $rule (@$rules) {
1410 next if $rule->{type} ne 'out';
1411 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1412 # check also other tap rules later
1413 ruleset_generate_rule($ruleset, $chain, $rule,
1414 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" });
9d31b418 1415 }
9d31b418
AD		 1416}
1417
51bae274
DM		 1418my $MAX_NETS = 32;
1419my $valid_netdev_names = {};
1420for (my $i = 0; $i < $MAX_NETS; $i++) {
1421 $valid_netdev_names->{"net$i"} = 1;
1422}
5e1267a5 1423
51bae274
DM		 1424sub parse_fw_rule {
1425 my ($line, $need_iface, $allow_groups) = @_;
5e1267a5 1426
a332200b 1427 my $macros = get_firewall_macros();
fcba0beb 1428 my $protocols = get_etc_protocols();
51bae274 1429
92e976b3 1430 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
51bae274 1431
11bac5c2 1432 # we can add single line comments to the end of the rule
30c1ae52 1433 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
11bac5c2
DM		 1434
1435 # we can disable a rule when prefixed with '|'
ea9e5116
DM		 1436 my $enable = 1;
1437
1438 $enable = 0 if $line =~ s/^\|//;
51bae274
DM		 1439
1440 my @data = split(/\s+/, $line);
92e976b3 1441 my $expected_elements = $need_iface ? 8 : 7;
51bae274
DM		 1442
1443 die "wrong number of rule elements\n" if scalar(@data) > $expected_elements;
1444
1445 if ($need_iface) {
92e976b3 1446 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
51bae274 1447 } else {
92e976b3 1448 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
51bae274
DM		 1449 }
1450
92e976b3 1451 die "incomplete rule\n" if ! ($type && $action);
51bae274 1452
961b4928 1453 my $macro;
961b4928 1454
92e976b3
DM		 1455 $type = lc($type);
1456
1457 if ($type eq 'in' || $type eq 'out') {
1458 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1459 # OK
1460 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
e5076eee
DM		 1461 $action = $2;
1462 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1463 die "unknown macro '$1'\n" if !$preferred_name;
1464 $macro = $preferred_name;
92e976b3
DM		 1465 } else {
1466 die "unknown action '$action'\n";
1467 }
1468 } elsif ($type eq 'group') {
1469 die "wrong number of rule elements\n" if scalar(@data) != 3;
1470 die "groups disabled\n" if !$allow_groups;
1471
1472 die "invalid characters in group name\n" if $action !~ m/^[A-Za-z0-9_\-]+$/;
51bae274 1473 } else {
92e976b3 1474 die "unknown rule type '$type'\n";
51bae274
DM		 1475 }
1476
1477 if ($need_iface) {
1478 $iface = undef if $iface && $iface eq '-';
51bae274
DM		 1479 }
1480
1481 $proto = undef if $proto && $proto eq '-';
6158271d 1482 die "unknown protokol '$proto'\n" if $proto &&
51bae274
DM		 1483 !(defined($protocols->{byname}->{$proto}) ||
1484 defined($protocols->{byid}->{$proto}));
1485
1486 $source = undef if $source && $source eq '-';
1487 $dest = undef if $dest && $dest eq '-';
1488
1489 $dport = undef if $dport && $dport eq '-';
1490 $sport = undef if $sport && $sport eq '-';
1491
e5076eee
DM		 1492 parse_port_name_number_or_range($dport) if defined($dport);
1493 parse_port_name_number_or_range($sport) if defined($sport);
1494
1495 parse_address_list($source) if $source;
1496 parse_address_list($dest) if $dest;
51bae274 1497
e5076eee 1498 return {
92e976b3 1499 type => $type,
ea9e5116 1500 enable => $enable,
11bac5c2 1501 comment => $comment,
51bae274 1502 action => $action,
e5076eee 1503 macro => $macro,
51bae274
DM		 1504 iface => $iface,
1505 source => $source,
1506 dest => $dest,
51bae274
DM		 1507 proto => $proto,
1508 dport => $dport,
1509 sport => $sport,
51bae274
DM		 1510 };
1511}
1512
2d404ffc 1513sub parse_vmfw_option {
85c6eaed
DM		 1514 my ($line) = @_;
1515
1516 my ($opt, $value);
1517
178a63be
DM		 1518 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1519
b47ecc88 1520 if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 1521 $opt = lc($1);
1522 $value = int($2);
178a63be
DM		 1523 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1524 $opt = lc($1);
1525 $value = $2 ? lc($3) : '';
72f63fde 1526 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 1527 $opt = lc($1);
1528 $value = uc($3);
b47ecc88
AD		 1529 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1530 $opt = lc($1);
1531 $value = $2;
9c6b6efd 1532 } else {
85c6eaed
DM		 1533 chomp $line;
1534 die "can't parse option '$line'\n"
1535 }
1536
1537 return ($opt, $value);
1538}
1539
2d404ffc
DM		 1540sub parse_hostfw_option {
1541 my ($line) = @_;
1542
1543 my ($opt, $value);
1544
1545 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1546
cc10e5d7 1547 if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) {
2d404ffc
DM		 1548 $opt = lc($1);
1549 $value = int($2);
178a63be 1550 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 1551 $opt = lc($1);
1552 $value = $2 ? lc($3) : '';
72f63fde 1553 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2d404ffc
DM		 1554 $opt = lc($1);
1555 $value = uc($3);
490cdead
DM		 1556 } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) {
1557 $opt = lc($1);
1558 $value = int($2);
2d404ffc
DM		 1559 } else {
1560 chomp $line;
1561 die "can't parse option '$line'\n"
1562 }
1563
1564 return ($opt, $value);
1565}
1566
51bae274
DM		 1567sub parse_vm_fw_rules {
1568 my ($filename, $fh) = @_;
1569
92e976b3 1570 my $res = { rules => [], options => {}};
51bae274
DM		 1571
1572 my $section;
1573
e7b35711
DM		 1574 my $digest = Digest::SHA->new('sha1');
1575
5e1267a5 1576 while (defined(my $line = <$fh>)) {
e7b35711
DM		 1577 $digest->add($line);
1578
5e1267a5
DM		 1579 next if $line =~ m/^#/;
1580 next if $line =~ m/^\s*$/;
1581
961b4928
DM		 1582 my $linenr = $fh->input_line_number();
1583 my $prefix = "$filename (line $linenr)";
1584
85c6eaed 1585 if ($line =~ m/^\[(\S+)\]\s*$/i) {
5e1267a5 1586 $section = lc($1);
85c6eaed 1587 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 1588 next;
1589 }
51bae274 1590 if (!$section) {
961b4928 1591 warn "$prefix: skip line - no section";
5e1267a5
DM		 1592 next;
1593 }
1594
85c6eaed
DM		 1595 next if !$res->{$section}; # skip undefined section
1596
1597 if ($section eq 'options') {
6158271d 1598 eval {
2d404ffc 1599 my ($opt, $value) = parse_vmfw_option($line);
85c6eaed
DM		 1600 $res->{options}->{$opt} = $value;
1601 };
1602 warn "$prefix: $@" if $@;
1603 next;
1604 }
1605
e5076eee
DM		 1606 my $rule;
1607 eval { $rule = parse_fw_rule($line, 1, 1); };
51bae274 1608 if (my $err = $@) {
961b4928 1609 warn "$prefix: $err";
5e1267a5
DM		 1610 next;
1611 }
1612
e5076eee 1613 push @{$res->{$section}}, $rule;
51bae274
DM		 1614 }
1615
e7b35711
DM		 1616 $res->{digest} = $digest->b64digest;
1617
51bae274
DM		 1618 return $res;
1619}
1620
1621sub parse_host_fw_rules {
1622 my ($filename, $fh) = @_;
1623
92e976b3 1624 my $res = { rules => [], options => {}};
51bae274
DM		 1625
1626 my $section;
1627
8b27beb9
DM		 1628 my $digest = Digest::SHA->new('sha1');
1629
51bae274 1630 while (defined(my $line = <$fh>)) {
8b27beb9
DM		 1631 $digest->add($line);
1632
51bae274
DM		 1633 next if $line =~ m/^#/;
1634 next if $line =~ m/^\s*$/;
1635
961b4928
DM		 1636 my $linenr = $fh->input_line_number();
1637 my $prefix = "$filename (line $linenr)";
1638
2d404ffc 1639 if ($line =~ m/^\[(\S+)\]\s*$/i) {
51bae274 1640 $section = lc($1);
2d404ffc 1641 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 1642 next;
1643 }
51bae274 1644 if (!$section) {
961b4928 1645 warn "$prefix: skip line - no section";
5e1267a5
DM		 1646 next;
1647 }
1648
2d404ffc
DM		 1649 next if !$res->{$section}; # skip undefined section
1650
1651 if ($section eq 'options') {
1652 eval {
2d404ffc
DM		 1653 my ($opt, $value) = parse_hostfw_option($line);
1654 $res->{options}->{$opt} = $value;
1655 };
1656 warn "$prefix: $@" if $@;
1657 next;
1658 }
1659
e5076eee
DM		 1660 my $rule;
1661 eval { $rule = parse_fw_rule($line, 1, 1); };
ecbea048 1662 if (my $err = $@) {
961b4928 1663 warn "$prefix: $err";
ecbea048 1664 next;
ecbea048 1665 }
e5076eee
DM		 1666
1667 push @{$res->{$section}}, $rule;
51bae274 1668 }
ecbea048 1669
8b27beb9
DM		 1670 $res->{digest} = $digest->b64digest;
1671
51bae274
DM		 1672 return $res;
1673}
4cdbb3b7 1674
51bae274
DM		 1675sub parse_group_fw_rules {
1676 my ($filename, $fh) = @_;
5e1267a5 1677
51bae274
DM		 1678 my $section;
1679 my $group;
1680
8f119284 1681 my $res = { rules => {} };
6158271d 1682
d1c53b3e
DM		 1683 my $digest = Digest::SHA->new('sha1');
1684
51bae274 1685 while (defined(my $line = <$fh>)) {
d1c53b3e
DM		 1686 $digest->add($line);
1687
51bae274
DM		 1688 next if $line =~ m/^#/;
1689 next if $line =~ m/^\s*$/;
1690
961b4928
DM		 1691 my $linenr = $fh->input_line_number();
1692 my $prefix = "$filename (line $linenr)";
1693
92e976b3
DM		 1694 if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) {
1695 $section = 'rules';
1696 $group = lc($1);
51bae274
DM		 1697 next;
1698 }
1699 if (!$section || !$group) {
961b4928 1700 warn "$prefix: skip line - no section";
51bae274
DM		 1701 next;
1702 }
1703
e5076eee
DM		 1704 my $rule;
1705 eval { $rule = parse_fw_rule($line, 0, 0); };
51bae274 1706 if (my $err = $@) {
961b4928 1707 warn "$prefix: $err";
51bae274
DM		 1708 next;
1709 }
e5076eee
DM		 1710
1711 push @{$res->{$section}->{$group}}, $rule;
5e1267a5
DM		 1712 }
1713
d1c53b3e
DM		 1714 $res->{digest} = $digest->b64digest;
1715
5e1267a5
DM		 1716 return $res;
1717}
1718
06320eb0
DM		 1719sub run_locked {
1720 my ($code, @param) = @_;
1721
1722 my $timeout = 10;
1723
1724 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
1725
1726 die $@ if $@;
1727
1728 return $res;
1729}
1730
5e1267a5
DM		 1731sub read_local_vm_config {
1732
1733 my $openvz = {};
5e1267a5
DM		 1734 my $qemu = {};
1735
c8301d63 1736 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 1737
c8301d63
DM		 1738 my $vmlist = PVE::Cluster::get_vmlist();
1739 return $vmdata if !$vmlist || !$vmlist->{ids};
1740 my $ids = $vmlist->{ids};
1741
1742 foreach my $vmid (keys %$ids) {
1743 next if !$vmid; # skip VE0
1744 my $d = $ids->{$vmid};
1745 next if !$d->{node} || $d->{node} ne $nodename;
1746 next if !$d->{type};
1747 if ($d->{type} eq 'openvz') {
d9fee004
DM		 1748 if ($have_pve_manager) {
1749 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
1750 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
1751 $openvz->{$vmid} = $conf;
1752 }
c8301d63
DM		 1753 }
1754 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 1755 if ($have_qemu_server) {
1756 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
1757 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
1758 $qemu->{$vmid} = $conf;
1759 }
c8301d63 1760 }
5e1267a5
DM		 1761 }
1762 }
d9fee004 1763
5e1267a5
DM		 1764 return $vmdata;
1765};
1766
e7b35711
DM		 1767sub load_vmfw_conf {
1768 my ($vmid) = @_;
1769
1770 my $vmfw_conf = {};
1771
1772 my $filename = "/etc/pve/firewall/$vmid.fw";
1773 if (my $fh = IO::File->new($filename, O_RDONLY)) {
1774 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
1775 }
1776
1777 return $vmfw_conf;
1778}
1779
6fc63ffd 1780sub read_vm_firewall_configs {
5e1267a5 1781 my ($vmdata) = @_;
6fc63ffd 1782 my $vmfw_configs = {};
c8301d63 1783
5e1267a5 1784 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
e7b35711
DM		 1785 my $vmfw_conf = load_vmfw_conf($vmid);
1786 next if !$vmfw_conf->{options}; # skip if file does not exists
1787 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 1788 }
1789
6fc63ffd 1790 return $vmfw_configs;
5e1267a5
DM		 1791}
1792
2d404ffc
DM		 1793sub get_option_log_level {
1794 my ($options, $k) = @_;
1795
1796 my $v = $options->{$k};
178a63be 1797 $v = $default_log_level if !defined($v);
2d404ffc
DM		 1798
1799 return undef if $v eq '' || $v eq 'nolog';
1800
1801 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
1802
1803 return $v if ($v >= 0) && ($v <= 7);
1804
1805 warn "unknown log level ($k = '$v')\n";
1806
1807 return undef;
1808}
1809
d8f2505e 1810sub generate_std_chains {
2d404ffc
DM		 1811 my ($ruleset, $options) = @_;
1812
1813 my $loglevel = get_option_log_level($options, 'smurf_log_level');
1814
1815 # same as shorewall smurflog.
782c4cde
DM		 1816 my $chain = 'PVEFW-smurflog';
1817
1818 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
1819 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 1820
1821 # same as shorewall logflags action.
1822 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde
DM		 1823 $chain = 'PVEFW-logflags';
1824 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
1825 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
1826 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 1827
1828 foreach my $chain (keys %$pve_std_chains) {
1829 ruleset_create_chain($ruleset, $chain);
1830 foreach my $rule (@{$pve_std_chains->{$chain}}) {
1831 if (ref($rule)) {
1832 ruleset_generate_rule($ruleset, $chain, $rule);
1833 } else {
1834 ruleset_addrule($ruleset, $chain, $rule);
1835 }
1836 }
1837 }
1838}
1839
6b9f68a2
DM		 1840sub save_pvefw_status {
1841 my ($status) = @_;
1842
1843 die "unknown status '$status' - internal error"
1844 if $status !~ m/^(stopped|active)$/;
1845
1846 mkdir dirname($pve_fw_status_filename);
1847 PVE::Tools::file_set_contents($pve_fw_status_filename, $status);
1848}
1849
1850sub read_pvefw_status {
1851
1852 my $status = 'unknown';
1853
1854 return 'stopped' if ! -f $pve_fw_status_filename;
1855
1856 eval {
1857 $status = PVE::Tools::file_get_contents($pve_fw_status_filename);
1858 };
1859 warn $@ if $@;
1860
1861 return $status;
1862}
1863
530c005e
DM		 1864# fixme: move to pve-common PVE::ProcFSTools
1865sub read_proc_net_route {
1866 my $filename = "/proc/net/route";
1867
1868 my $res = {};
1869
1870 my $fh = IO::File->new ($filename, "r");
1871 return $res if !$fh;
1872
1873 my $int_to_quad = sub {
1874 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
1875 };
1876
1877 while (defined(my $line = <$fh>)) {
1878 next if $line =~/^Iface\s+Destination/; # skip head
1879 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
1880 push @{$res->{$iface}}, {
1881 dest => &$int_to_quad(hex($dest)),
1882 gateway => &$int_to_quad(hex($gateway)),
1883 mask => &$int_to_quad(hex($mask)),
1884 metric => $metric,
1885 mtu => $mtu,
1886 };
1887 }
1888
1889 return $res;
1890}
1891
e5d76bde 1892sub load_security_groups {
530c005e 1893
92e976b3 1894 my $groups_conf = {};
51bae274
DM		 1895 my $filename = "/etc/pve/firewall/groups.fw";
1896 if (my $fh = IO::File->new($filename, O_RDONLY)) {
92e976b3 1897 $groups_conf = parse_group_fw_rules($filename, $fh);
51bae274 1898 }
5e1267a5 1899
e5d76bde
DM		 1900 return $groups_conf;
1901}
1902
9c7e0858
DM		 1903sub save_security_groups {
1904 my ($groups_conf) = @_;
1905
1906 my $raw = '';
1907 my $filename = "/etc/pve/firewall/groups.fw";
1908
1909 foreach my $group (sort keys %{$groups_conf->{rules}}) {
1910 my $rules = $groups_conf->{rules}->{$group};
1911 $raw .= "[group $group]\n\n";
1912
1913 foreach my $rule (@$rules) {
1914 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
1915 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
1916 $raw .= uc($rule->{type});
1917 $raw .= " " . $rule->{action};
1918 $raw .= " " . ($rule->{source} || '-');
1919 $raw .= " " . ($rule->{dest} || '-');
1920 $raw .= " " . ($rule->{proto} || '-');
1921 $raw .= " " . ($rule->{dport} || '-');
1922 $raw .= " " . ($rule->{sport} || '-');
1923 $raw .= " # " . encode('utf8', $rule->{comment})
1924 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
1925 $raw .= "\n";
1926 } else {
1927 die "implement me '$rule->{type}'";
1928 }
1929 }
1930
1931 $raw .= "\n";
1932 }
1933
1934 PVE::Tools::file_set_contents($filename, $raw);
1935}
1936
8b27beb9
DM		 1937sub load_hostfw_conf {
1938
1939 my $hostfw_conf = {};
1940 my $filename = "/etc/pve/local/host.fw";
1941 if (my $fh = IO::File->new($filename, O_RDONLY)) {
1942 $hostfw_conf = parse_host_fw_rules($filename, $fh);
1943 }
1944 return $hostfw_conf;
1945}
1946
e5d76bde
DM		 1947sub compile {
1948 my $vmdata = read_local_vm_config();
1949 my $vmfw_configs = read_vm_firewall_configs($vmdata);
1950
1951 my $routing_table = read_proc_net_route();
1952
1953 my $groups_conf = load_security_groups();
1954
3fa83edf
DM		 1955 my $ruleset = {};
1956
dec84fcd
DM		 1957 ruleset_create_chain($ruleset, "PVEFW-INPUT");
1958 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 1959
fadb13dd 1960 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3fa83edf 1961
8b27beb9
DM		 1962 my $hostfw_conf = load_hostfw_conf();
1963 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 1964
92e976b3 1965 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 1966
6d2ab017 1967 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 1968
d18c1e2b 1969 enable_host_firewall($ruleset, $hostfw_conf, $groups_conf) if $hostfw_enable;
3fa83edf 1970
da6fc60b
AD		 1971 my $ips_enable = undef;
1972
6158271d 1973 # generate firewall rules for QEMU VMs
3fa83edf
DM		 1974 foreach my $vmid (keys %{$vmdata->{qemu}}) {
1975 my $conf = $vmdata->{qemu}->{$vmid};
6fc63ffd 1976 my $vmfw_conf = $vmfw_configs->{$vmid};
fa9c4a6f
DM		 1977 next if !$vmfw_conf;
1978 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
3fa83edf 1979
da6fc60b
AD		 1980 $ips_enable = 1 if $vmfw_conf->{options}->{ips};
1981
3fa83edf
DM		 1982 foreach my $netid (keys %$conf) {
1983 next if $netid !~ m/^net(\d+)$/;
1984 my $net = PVE::QemuServer::parse_net($conf->{$netid});
1985 next if !$net;
1986 my $iface = "tap${vmid}i$1";
5e1267a5 1987
3fa83edf
DM		 1988 my $bridge = $net->{bridge};
1989 next if !$bridge; # fixme: ?
1990
1991 $bridge .= "v$net->{tag}" if $net->{tag};
1992
530c005e 1993 generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table);
3fa83edf 1994
c29f55c9 1995 my $macaddr = $net->{macaddr};
782c4cde
DM		 1996 generate_tap_rules_direction($ruleset, $groups_conf, $iface, $netid, $macaddr,
1997 $vmfw_conf, $vmid, $bridge, 'IN');
1998 generate_tap_rules_direction($ruleset, $groups_conf, $iface, $netid, $macaddr,
1999 $vmfw_conf, $vmid, $bridge, 'OUT');
3fa83edf
DM		 2000 }
2001 }
c8301d63
DM		 2002
2003 # generate firewall rules for OpenVZ containers
2004 foreach my $vmid (keys %{$vmdata->{openvz}}) {
2005 my $conf = $vmdata->{openvz}->{$vmid};
2006
2007 my $vmfw_conf = $vmfw_configs->{$vmid};
2008 next if !$vmfw_conf;
2009 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
2010
da6fc60b
AD		 2011 $ips_enable = 1 if $vmfw_conf->{options}->{ips};
2012
c8301d63
DM		 2013 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2014 my $ip = $conf->{ip_address}->{value};
9e15114a
DM		 2015 generate_venet_rules_direction($ruleset, $groups_conf, $vmfw_conf, $vmid, $ip, 'IN');
2016 generate_venet_rules_direction($ruleset, $groups_conf, $vmfw_conf, $vmid, $ip, 'OUT');
c8301d63
DM		 2017 }
2018
2019 if ($conf->{netif} && $conf->{netif}->{value}) {
2020 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
c8301d63
DM		 2021 foreach my $netid (keys %$netif) {
2022 my $d = $netif->{$netid};
2023 my $bridge = $d->{bridge};
2024 if (!$bridge) {
2025 warn "no bridge device for CT $vmid iface '$netid'\n";
2026 next; # fixme?
2027 }
530c005e
DM		 2028
2029 generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table);
2030
12d0f130 2031 my $macaddr = $d->{mac};
c8301d63 2032 my $iface = $d->{host_ifname};
782c4cde
DM		 2033 generate_tap_rules_direction($ruleset, $groups_conf, $iface, $netid, $macaddr,
2034 $vmfw_conf, $vmid, $bridge, 'IN');
2035 generate_tap_rules_direction($ruleset, $groups_conf, $iface, $netid, $macaddr,
2036 $vmfw_conf, $vmid, $bridge, 'OUT');
c8301d63
DM		 2037 }
2038 }
2039 }
c0413e35 2040
cc10e5d7 2041 if($hostfw_options->{optimize}){
da6fc60b
AD		 2042
2043 my $accept = $ips_enable ? "PVEFW-IPS" : "ACCEPT";
2044 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
cc10e5d7
AD		 2045 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP");
2046 }
2047
eba0fb64
DM		 2048 # fixme: what log level should we use here?
2049 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2050
c98c037d
DM		 2051 # fixme: should we really block inter-bridge traffic?
2052
2053 # always allow traffic from containers?
2054 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN");
2055
eba0fb64
DM		 2056 # disable interbridge routing
2057 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop");
2058 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop");
782c4cde
DM		 2059 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+");
2060 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+");
eba0fb64
DM		 2061 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP");
2062 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP");
2063
490cdead 2064 return wantarray ? ($ruleset, $hostfw_conf) : $ruleset;
3fa83edf
DM		 2065}
2066
2067sub get_ruleset_status {
2068 my ($ruleset, $verbose) = @_;
2069
2070 my $active_chains = iptables_get_chains();
2071
2072 my $statushash = {};
2073
2074 foreach my $chain (sort keys %$ruleset) {
09d5f68e 2075 my $digest = Digest::SHA->new('sha1');
3fa83edf
DM		 2076 foreach my $cmd (@{$ruleset->{$chain}}) {
2077 $digest->add("$cmd\n");
2078 }
2079 my $sig = $digest->b64digest;
2080 $statushash->{$chain}->{sig} = $sig;
2081
2082 my $oldsig = $active_chains->{$chain};
2083 if (!defined($oldsig)) {
2084 $statushash->{$chain}->{action} = 'create';
2085 } else {
2086 if ($oldsig eq $sig) {
2087 $statushash->{$chain}->{action} = 'exists';
2088 } else {
2089 $statushash->{$chain}->{action} = 'update';
2090 }
2091 }
2092 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2093 foreach my $cmd (@{$ruleset->{$chain}}) {
2094 print "\t$cmd\n" if $verbose;
2095 }
2096 }
2097
2098 foreach my $chain (sort keys %$active_chains) {
2099 if (!defined($ruleset->{$chain})) {
2100 my $sig = $active_chains->{$chain};
2101 $statushash->{$chain}->{action} = 'delete';
2102 $statushash->{$chain}->{sig} = $sig;
2103 print "delete $chain ($sig)\n" if $verbose;
2104 }
6158271d 2105 }
3fa83edf
DM		 2106
2107 return $statushash;
2108}
2109
2110sub print_ruleset {
2111 my ($ruleset) = @_;
2112
2113 get_ruleset_status($ruleset, 1);
2114}
2115
2116sub print_sig_rule {
2117 my ($chain, $sig) = @_;
2118
09d5f68e
DM		 2119 # We just use this to store a SHA1 checksum used to detect changes
2120 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2121}
2122
6b9f68a2 2123sub get_rulset_cmdlist {
a84f4d96 2124 my ($ruleset, $verbose) = @_;
3fa83edf 2125
3fa83edf
DM		 2126 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
2127
2128 my $statushash = get_ruleset_status($ruleset, $verbose);
2129
2130 # create missing chains first
2131 foreach my $chain (sort keys %$ruleset) {
2132 my $stat = $statushash->{$chain};
2133 die "internal error" if !$stat;
2134 next if $stat->{action} ne 'create';
886aba9c 2135
3fa83edf
DM		 2136 $cmdlist .= ":$chain - [0:0]\n";
2137 }
2138
dec84fcd 2139 my $rule = "INPUT -j PVEFW-INPUT";
3fa83edf
DM		 2140 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2141 $cmdlist .= "-A $rule\n";
2142 }
dec84fcd 2143 $rule = "OUTPUT -j PVEFW-OUTPUT";
3fa83edf
DM		 2144 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2145 $cmdlist .= "-A $rule\n";
2146 }
2147
dec84fcd 2148 $rule = "FORWARD -j PVEFW-FORWARD";
3fa83edf
DM		 2149 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2150 $cmdlist .= "-A $rule\n";
2151 }
2152
2153 foreach my $chain (sort keys %$ruleset) {
2154 my $stat = $statushash->{$chain};
2155 die "internal error" if !$stat;
2156
2157 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2158 $cmdlist .= "-F $chain\n";
2159 foreach my $cmd (@{$ruleset->{$chain}}) {
2160 $cmdlist .= "$cmd\n";
2161 }
2162 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2163 } elsif ($stat->{action} eq 'delete') {
f5d28682 2164 die "internal error"; # this should not happen
3fa83edf
DM		 2165 } elsif ($stat->{action} eq 'exists') {
2166 # do nothing
2167 } else {
2168 die "internal error - unknown status '$stat->{action}'";
2169 }
2170 }
2171
f5d28682
DM		 2172 foreach my $chain (keys %$statushash) {
2173 next if $statushash->{$chain}->{action} ne 'delete';
2174 $cmdlist .= "-F $chain\n";
2175 }
2176 foreach my $chain (keys %$statushash) {
2177 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 2178 next if $chain eq 'PVEFW-INPUT';
2179 next if $chain eq 'PVEFW-OUTPUT';
2180 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 2181 $cmdlist .= "-X $chain\n";
2182 }
2183
3fa83edf
DM		 2184 $cmdlist .= "COMMIT\n";
2185
6b9f68a2
DM		 2186 return $cmdlist;
2187}
2188
2189sub apply_ruleset {
edb75ba9 2190 my ($ruleset, $hostfw_conf, $verbose) = @_;
6b9f68a2
DM		 2191
2192 enable_bridge_firewall();
2193
edb75ba9
DM		 2194 update_nf_conntrack_max($hostfw_conf);
2195
6b9f68a2
DM		 2196 my $cmdlist = get_rulset_cmdlist($ruleset, $verbose);
2197
3fa83edf
DM		 2198 print $cmdlist if $verbose;
2199
2200 iptables_restore_cmdlist($cmdlist);
2201
6158271d 2202 # test: re-read status and check if everything is up to date
6b9f68a2 2203 my $statushash = get_ruleset_status($ruleset);
3fa83edf
DM		 2204
2205 my $errors;
2206 foreach my $chain (sort keys %$ruleset) {
2207 my $stat = $statushash->{$chain};
2208 if ($stat->{action} ne 'exists') {
2209 warn "unable to update chain '$chain'\n";
2210 $errors = 1;
2211 }
2212 }
b6360c3f 2213
3fa83edf 2214 die "unable to apply firewall changes\n" if $errors;
b6360c3f
DM		 2215}
2216
490cdead
DM		 2217sub update_nf_conntrack_max {
2218 my ($hostfw_conf) = @_;
2219
2220 my $max = 65536; # reasonable default
2221
2222 my $options = $hostfw_conf->{options} || {};
2223
2224 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2225 $max = $options->{nf_conntrack_max};
2226 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2227 }
2228
2229 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
2230 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
2231
2232 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2233
2234 if ($current != $max) {
2235 my $hashsize = int($max/4);
2236 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2237 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2238 }
2239}
2240
6b9f68a2
DM		 2241sub update {
2242 my ($start, $verbose) = @_;
2243
2244 my $code = sub {
2245 my $status = read_pvefw_status();
2246
490cdead
DM		 2247 my ($ruleset, $hostfw_conf) = PVE::Firewall::compile();
2248
6b9f68a2
DM		 2249 if ($start || $status eq 'active') {
2250
2251 save_pvefw_status('active') if ($status ne 'active');
2252
edb75ba9 2253 apply_ruleset($ruleset, $hostfw_conf, $verbose);
6b9f68a2
DM		 2254 } else {
2255 print "Firewall not active (status = $status)\n" if $verbose;
2256 }
2257 };
2258
2259 run_locked($code);
2260}
2261
2262
b6360c3f 22631;
Firewall test scripts