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add ipv6 ipset support
[pve-firewall.git] / src / PVE / Firewall.pm
CommitLineData
b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
cbb5d6f3 5use POSIX;
b6360c3f 6use Data::Dumper;
09d5f68e 7use Digest::SHA;
6d959e3f 8use Socket qw(AF_INET6 inet_ntop inet_pton);
c8301d63 9use PVE::INotify;
7ca36671 10use PVE::Exception qw(raise raise_param_exc);
e74a87f5 11use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 12use PVE::Cluster;
5f0a912c 13use PVE::ProcFSTools;
70e524eb 14use PVE::Tools qw($IPV4RE $IPV6RE);
6b9f68a2 15use File::Basename;
5e1267a5
DM		 16use File::Path;
17use IO::File;
ecbea048 18use Net::IP;
1a301a8d 19use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 20use Encode;
ecbea048 21
63c91681 22my $hostfw_conf_filename = "/etc/pve/local/host.fw";
21053409
DM		 23my $pvefw_conf_dir = "/etc/pve/firewall";
24my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
fca39c2c 25
cbb5d6f3 26# dynamically include PVE::QemuServer and PVE::OpenVZ
d9fee004
DM		 27# to avoid dependency problems
28my $have_qemu_server;
29eval {
30 require PVE::QemuServer;
31 $have_qemu_server = 1;
32};
33
34my $have_pve_manager;
35eval {
36 require PVE::OpenVZ;
37 $have_pve_manager = 1;
38};
39
351052d1
DM		 40my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
41my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
42my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
43
44my $max_alias_name_length = 64;
45my $max_ipset_name_length = 64;
46my $max_group_name_length = 20;
47
ae029a88
DM		 48PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr);
49sub pve_verify_ip_or_cidr {
009ee3ac
DM		 50 my ($cidr, $noerr) = @_;
51
70e524eb 52 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
e34d0e58 53 return $cidr if Net::IP->new($cidr);
7c619bbb
DM		 54 return undef if $noerr;
55 die Net::IP::Error() . "\n";
56 }
57 return undef if $noerr;
58 die "value does not look like a valid IP address or CIDR network\n";
59}
60
ae029a88
DM		 61PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias);
62sub pve_verify_ip_or_cidr_or_alias {
7c619bbb
DM		 63 my ($cidr, $noerr) = @_;
64
65 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
66
ae029a88 67 return pve_verify_ip_or_cidr($cidr, $noerr);
009ee3ac
DM		 68}
69
e74a87f5
DM		 70PVE::JSONSchema::register_standard_option('ipset-name', {
71 description => "IP set name.",
72 type => 'string',
351052d1 73 pattern => $ipset_name_pattern,
387d0ffc 74 minLength => 2,
351052d1 75 maxLength => $max_ipset_name_length,
387d0ffc
DM		 76});
77
81d574a7
DM		 78PVE::JSONSchema::register_standard_option('pve-fw-alias', {
79 description => "Alias name.",
80 type => 'string',
351052d1 81 pattern => $ip_alias_pattern,
81d574a7 82 minLength => 2,
351052d1 83 maxLength => $max_alias_name_length,
81d574a7
DM		 84});
85
6302c41f
DM		 86PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
87 description => "Log level.",
e34d0e58 88 type => 'string',
6302c41f
DM		 89 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
90 optional => 1,
91});
92
387d0ffc
DM		 93PVE::JSONSchema::register_standard_option('pve-security-group-name', {
94 description => "Security Group name.",
95 type => 'string',
44be8ceb 96 pattern => $security_group_name_pattern,
387d0ffc 97 minLength => 2,
351052d1 98 maxLength => $max_group_name_length,
e74a87f5 99});
009ee3ac 100
cbb5d6f3
DM		 101my $feature_ipset_nomatch = 0;
102eval {
103 my (undef, undef, $release) = POSIX::uname();
104 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
105 my ($major, $minor) = ($1, $2);
106 $feature_ipset_nomatch = 1 if ($major > 3) ||
107 ($major == 3 && $minor >= 7);
108 }
109
110};
111
5e1267a5 112use Data::Dumper;
b6360c3f 113
c8301d63
DM		 114my $nodename = PVE::INotify::nodename();
115
06320eb0
DM		 116my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
117
56f313f7 118my $default_log_level = 'nolog'; # avoid logs by default
2d404ffc
DM		 119
120my $log_level_hash = {
121 debug => 7,
122 info => 6,
123 notice => 5,
124 warning => 4,
125 err => 3,
126 crit => 2,
127 alert => 1,
128 emerg => 0,
129};
130
857f62c8 131# imported/converted from: /usr/share/shorewall/macro.*
961b4928 132my $pve_fw_macros = {
857f62c8 133 'Amanda' => [
ebd54ae9 134 "Amanda Backup",
857f62c8
DM		 135 { action => 'PARAM', proto => 'udp', dport => '10080' },
136 { action => 'PARAM', proto => 'tcp', dport => '10080' },
137 ],
138 'Auth' => [
ebd54ae9 139 "Auth (identd) traffic",
857f62c8
DM		 140 { action => 'PARAM', proto => 'tcp', dport => '113' },
141 ],
142 'BGP' => [
ebd54ae9 143 "Border Gateway Protocol traffic",
857f62c8
DM		 144 { action => 'PARAM', proto => 'tcp', dport => '179' },
145 ],
146 'BitTorrent' => [
ebd54ae9 147 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 148 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 149 { action => 'PARAM', proto => 'udp', dport => '6881' },
150 ],
151 'BitTorrent32' => [
ebd54ae9 152 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 153 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
154 { action => 'PARAM', proto => 'udp', dport => '6881' },
155 ],
156 'CVS' => [
ebd54ae9 157 "Concurrent Versions System pserver traffic",
857f62c8
DM		 158 { action => 'PARAM', proto => 'tcp', dport => '2401' },
159 ],
160 'Citrix' => [
ebd54ae9 161 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 162 { action => 'PARAM', proto => 'tcp', dport => '1494' },
163 { action => 'PARAM', proto => 'udp', dport => '1604' },
164 { action => 'PARAM', proto => 'tcp', dport => '2598' },
165 ],
166 'DAAP' => [
ebd54ae9 167 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 168 { action => 'PARAM', proto => 'tcp', dport => '3689' },
169 { action => 'PARAM', proto => 'udp', dport => '3689' },
170 ],
171 'DCC' => [
ebd54ae9 172 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 173 { action => 'PARAM', proto => 'tcp', dport => '6277' },
174 ],
175 'DHCPfwd' => [
d2c3266d 176 "Forwarded DHCP traffic",
857f62c8 177 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 178 ],
179 'DNS' => [
ebd54ae9 180 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 181 { action => 'PARAM', proto => 'udp', dport => '53' },
182 { action => 'PARAM', proto => 'tcp', dport => '53' },
183 ],
184 'Distcc' => [
ebd54ae9 185 "Distributed Compiler service",
857f62c8
DM		 186 { action => 'PARAM', proto => 'tcp', dport => '3632' },
187 ],
857f62c8 188 'FTP' => [
ebd54ae9 189 "File Transfer Protocol",
857f62c8
DM		 190 { action => 'PARAM', proto => 'tcp', dport => '21' },
191 ],
192 'Finger' => [
ebd54ae9 193 "Finger protocol (RFC 742)",
857f62c8
DM		 194 { action => 'PARAM', proto => 'tcp', dport => '79' },
195 ],
196 'GNUnet' => [
ebd54ae9 197 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 198 { action => 'PARAM', proto => 'tcp', dport => '2086' },
199 { action => 'PARAM', proto => 'udp', dport => '2086' },
200 { action => 'PARAM', proto => 'tcp', dport => '1080' },
201 { action => 'PARAM', proto => 'udp', dport => '1080' },
202 ],
203 'GRE' => [
d2c3266d 204 "Generic Routing Encapsulation tunneling protocol",
857f62c8 205 { action => 'PARAM', proto => '47' },
857f62c8
DM		 206 ],
207 'Git' => [
ebd54ae9 208 "Git distributed revision control traffic",
857f62c8
DM		 209 { action => 'PARAM', proto => 'tcp', dport => '9418' },
210 ],
857f62c8 211 'HKP' => [
ebd54ae9 212 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 213 { action => 'PARAM', proto => 'tcp', dport => '11371' },
214 ],
215 'HTTP' => [
ebd54ae9 216 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 217 { action => 'PARAM', proto => 'tcp', dport => '80' },
218 ],
857f62c8 219 'HTTPS' => [
ebd54ae9 220 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 221 { action => 'PARAM', proto => 'tcp', dport => '443' },
222 ],
223 'ICPV2' => [
ebd54ae9 224 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 225 { action => 'PARAM', proto => 'udp', dport => '3130' },
226 ],
227 'ICQ' => [
ebd54ae9 228 "AOL Instant Messenger traffic",
857f62c8
DM		 229 { action => 'PARAM', proto => 'tcp', dport => '5190' },
230 ],
231 'IMAP' => [
ebd54ae9 232 "Internet Message Access Protocol",
857f62c8
DM		 233 { action => 'PARAM', proto => 'tcp', dport => '143' },
234 ],
235 'IMAPS' => [
ebd54ae9 236 "Internet Message Access Protocol over SSL",
857f62c8
DM		 237 { action => 'PARAM', proto => 'tcp', dport => '993' },
238 ],
239 'IPIP' => [
d2c3266d 240 "IPIP capsulation traffic",
857f62c8 241 { action => 'PARAM', proto => '94' },
857f62c8 242 ],
857f62c8 243 'IPsec' => [
d2c3266d 244 "IPsec traffic",
857f62c8
DM		 245 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
246 { action => 'PARAM', proto => '50' },
857f62c8
DM		 247 ],
248 'IPsecah' => [
d2c3266d 249 "IPsec authentication (AH) traffic",
857f62c8
DM		 250 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
251 { action => 'PARAM', proto => '51' },
857f62c8
DM		 252 ],
253 'IPsecnat' => [
d2c3266d 254 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 255 { action => 'PARAM', proto => 'udp', dport => '500' },
256 { action => 'PARAM', proto => 'udp', dport => '4500' },
257 { action => 'PARAM', proto => '50' },
857f62c8
DM		 258 ],
259 'IRC' => [
ebd54ae9 260 "Internet Relay Chat traffic",
857f62c8
DM		 261 { action => 'PARAM', proto => 'tcp', dport => '6667' },
262 ],
857f62c8 263 'Jetdirect' => [
ebd54ae9 264 "HP Jetdirect printing",
857f62c8
DM		 265 { action => 'PARAM', proto => 'tcp', dport => '9100' },
266 ],
267 'L2TP' => [
ebd54ae9 268 "Layer 2 Tunneling Protocol traffic",
857f62c8 269 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 270 ],
271 'LDAP' => [
ebd54ae9 272 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 273 { action => 'PARAM', proto => 'tcp', dport => '389' },
274 ],
275 'LDAPS' => [
ebd54ae9 276 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 277 { action => 'PARAM', proto => 'tcp', dport => '636' },
278 ],
279 'MSNP' => [
ebd54ae9 280 "Microsoft Notification Protocol",
857f62c8
DM		 281 { action => 'PARAM', proto => 'tcp', dport => '1863' },
282 ],
283 'MSSQL' => [
ebd54ae9 284 "Microsoft SQL Server",
857f62c8
DM		 285 { action => 'PARAM', proto => 'tcp', dport => '1433' },
286 ],
287 'Mail' => [
ebd54ae9 288 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 289 { action => 'PARAM', proto => 'tcp', dport => '25' },
290 { action => 'PARAM', proto => 'tcp', dport => '465' },
291 { action => 'PARAM', proto => 'tcp', dport => '587' },
292 ],
293 'Munin' => [
ebd54ae9 294 "Munin networked resource monitoring traffic",
857f62c8
DM		 295 { action => 'PARAM', proto => 'tcp', dport => '4949' },
296 ],
297 'MySQL' => [
ebd54ae9 298 "MySQL server",
857f62c8
DM		 299 { action => 'PARAM', proto => 'tcp', dport => '3306' },
300 ],
301 'NNTP' => [
ebd54ae9 302 "NNTP traffic (Usenet).",
857f62c8
DM		 303 { action => 'PARAM', proto => 'tcp', dport => '119' },
304 ],
305 'NNTPS' => [
ebd54ae9 306 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 307 { action => 'PARAM', proto => 'tcp', dport => '563' },
308 ],
309 'NTP' => [
ebd54ae9 310 "Network Time Protocol (ntpd)",
857f62c8
DM		 311 { action => 'PARAM', proto => 'udp', dport => '123' },
312 ],
857f62c8 313 'OSPF' => [
ebd54ae9 314 "OSPF multicast traffic",
857f62c8
DM		 315 { action => 'PARAM', proto => '89' },
316 ],
317 'OpenVPN' => [
ebd54ae9 318 "OpenVPN traffic",
857f62c8
DM		 319 { action => 'PARAM', proto => 'udp', dport => '1194' },
320 ],
321 'PCA' => [
ebd54ae9 322 "Symantec PCAnywere (tm)",
857f62c8
DM		 323 { action => 'PARAM', proto => 'udp', dport => '5632' },
324 { action => 'PARAM', proto => 'tcp', dport => '5631' },
325 ],
326 'POP3' => [
ebd54ae9 327 "POP3 traffic",
857f62c8
DM		 328 { action => 'PARAM', proto => 'tcp', dport => '110' },
329 ],
330 'POP3S' => [
ebd54ae9 331 "Encrypted POP3 traffic",
857f62c8
DM		 332 { action => 'PARAM', proto => 'tcp', dport => '995' },
333 ],
334 'PPtP' => [
ebd54ae9 335 "Point-to-Point Tunneling Protocol",
857f62c8 336 { action => 'PARAM', proto => '47' },
857f62c8
DM		 337 { action => 'PARAM', proto => 'tcp', dport => '1723' },
338 ],
339 'Ping' => [
ebd54ae9 340 "ICMP echo request",
269d4f13 341 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 342 ],
343 'PostgreSQL' => [
ebd54ae9 344 "PostgreSQL server",
857f62c8
DM		 345 { action => 'PARAM', proto => 'tcp', dport => '5432' },
346 ],
347 'Printer' => [
ebd54ae9 348 "Line Printer protocol printing",
857f62c8
DM		 349 { action => 'PARAM', proto => 'tcp', dport => '515' },
350 ],
351 'RDP' => [
ebd54ae9 352 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 353 { action => 'PARAM', proto => 'tcp', dport => '3389' },
354 ],
d2c3266d 355 'RIP' => [
ebd54ae9 356 "Routing Information Protocol (bidirectional)",
857f62c8 357 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 358 ],
359 'RNDC' => [
ebd54ae9 360 "BIND remote management protocol",
857f62c8
DM		 361 { action => 'PARAM', proto => 'tcp', dport => '953' },
362 ],
363 'Razor' => [
ebd54ae9 364 "Razor Antispam System",
857f62c8
DM		 365 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
366 ],
367 'Rdate' => [
ebd54ae9 368 "Remote time retrieval (rdate)",
857f62c8
DM		 369 { action => 'PARAM', proto => 'tcp', dport => '37' },
370 ],
371 'Rsync' => [
ebd54ae9 372 "Rsync server",
857f62c8
DM		 373 { action => 'PARAM', proto => 'tcp', dport => '873' },
374 ],
375 'SANE' => [
ebd54ae9 376 "SANE network scanning",
857f62c8
DM		 377 { action => 'PARAM', proto => 'tcp', dport => '6566' },
378 ],
379 'SMB' => [
ebd54ae9 380 "Microsoft SMB traffic",
857f62c8
DM		 381 { action => 'PARAM', proto => 'udp', dport => '135,445' },
382 { action => 'PARAM', proto => 'udp', dport => '137:139' },
383 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
384 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
385 ],
857f62c8 386 'SMBswat' => [
ebd54ae9 387 "Samba Web Administration Tool",
857f62c8
DM		 388 { action => 'PARAM', proto => 'tcp', dport => '901' },
389 ],
390 'SMTP' => [
ebd54ae9 391 "Simple Mail Transfer Protocol",
857f62c8
DM		 392 { action => 'PARAM', proto => 'tcp', dport => '25' },
393 ],
394 'SMTPS' => [
ebd54ae9 395 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 396 { action => 'PARAM', proto => 'tcp', dport => '465' },
397 ],
398 'SNMP' => [
ebd54ae9 399 "Simple Network Management Protocol",
857f62c8
DM		 400 { action => 'PARAM', proto => 'udp', dport => '161:162' },
401 { action => 'PARAM', proto => 'tcp', dport => '161' },
402 ],
403 'SPAMD' => [
ebd54ae9 404 "Spam Assassin SPAMD traffic",
857f62c8
DM		 405 { action => 'PARAM', proto => 'tcp', dport => '783' },
406 ],
407 'SSH' => [
ebd54ae9 408 "Secure shell traffic",
857f62c8
DM		 409 { action => 'PARAM', proto => 'tcp', dport => '22' },
410 ],
411 'SVN' => [
ebd54ae9 412 "Subversion server (svnserve)",
857f62c8
DM		 413 { action => 'PARAM', proto => 'tcp', dport => '3690' },
414 ],
415 'SixXS' => [
ebd54ae9 416 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 417 { action => 'PARAM', proto => 'tcp', dport => '3874' },
418 { action => 'PARAM', proto => 'udp', dport => '3740' },
419 { action => 'PARAM', proto => '41' },
420 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
421 ],
422 'Squid' => [
ebd54ae9 423 "Squid web proxy traffic",
857f62c8
DM		 424 { action => 'PARAM', proto => 'tcp', dport => '3128' },
425 ],
426 'Submission' => [
ebd54ae9 427 "Mail message submission traffic",
857f62c8
DM		 428 { action => 'PARAM', proto => 'tcp', dport => '587' },
429 ],
430 'Syslog' => [
ebd54ae9 431 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 432 { action => 'PARAM', proto => 'udp', dport => '514' },
433 { action => 'PARAM', proto => 'tcp', dport => '514' },
434 ],
435 'TFTP' => [
ebd54ae9 436 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 437 { action => 'PARAM', proto => 'udp', dport => '69' },
438 ],
439 'Telnet' => [
ebd54ae9 440 "Telnet traffic",
857f62c8
DM		 441 { action => 'PARAM', proto => 'tcp', dport => '23' },
442 ],
443 'Telnets' => [
ebd54ae9 444 "Telnet over SSL",
857f62c8
DM		 445 { action => 'PARAM', proto => 'tcp', dport => '992' },
446 ],
447 'Time' => [
ebd54ae9 448 "RFC 868 Time protocol",
857f62c8
DM		 449 { action => 'PARAM', proto => 'tcp', dport => '37' },
450 ],
451 'Trcrt' => [
ebd54ae9 452 "Traceroute (for up to 30 hops) traffic",
857f62c8 453 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 454 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 455 ],
456 'VNC' => [
93be4333
DM		 457 "VNC traffic for VNC display's 0 - 99",
458 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 459 ],
460 'VNCL' => [
ebd54ae9 461 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 462 { action => 'PARAM', proto => 'tcp', dport => '5500' },
463 ],
464 'Web' => [
ebd54ae9 465 "WWW traffic (HTTP and HTTPS)",
857f62c8 466 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 467 { action => 'PARAM', proto => 'tcp', dport => '443' },
468 ],
857f62c8 469 'Webcache' => [
ebd54ae9 470 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 471 { action => 'PARAM', proto => 'tcp', dport => '8080' },
472 ],
473 'Webmin' => [
ebd54ae9 474 "Webmin traffic",
857f62c8
DM		 475 { action => 'PARAM', proto => 'tcp', dport => '10000' },
476 ],
477 'Whois' => [
ebd54ae9 478 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 479 { action => 'PARAM', proto => 'tcp', dport => '43' },
480 ],
961b4928
DM		 481};
482
483my $pve_fw_parsed_macros;
ebd54ae9 484my $pve_fw_macro_descr;
961b4928 485my $pve_fw_preferred_macro_names = {};
3a616aa0 486
5547adf7
AD		 487my $pve_std_chains = {};
488$pve_std_chains->{4} = {
d8f2505e
DM		 489 'PVEFW-SET-ACCEPT-MARK' => [
490 "-j MARK --set-mark 1",
491 ],
79929d9c
DM		 492 'PVEFW-DropBroadcast' => [
493 # same as shorewall 'Broadcast'
494 # simply DROP BROADCAST/MULTICAST/ANYCAST
495 # we can use this to reduce logging
496 { action => 'DROP', dsttype => 'BROADCAST' },
497 { action => 'DROP', dsttype => 'MULTICAST' },
498 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 499 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 500 ],
501 'PVEFW-reject' => [
502 # same as shorewall 'reject'
503 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 504 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 505 { action => 'DROP', proto => 'icmp' },
506 "-p tcp -j REJECT --reject-with tcp-reset",
507 "-p udp -j REJECT --reject-with icmp-port-unreachable",
508 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
509 "-j REJECT --reject-with icmp-host-prohibited",
510 ],
511 'PVEFW-Drop' => [
cbb5d6f3 512 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 513 # but REJECT/DROP some packages to reduce logging,
514 # and ACCEPT critical ICMP types
515 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
516 # we are not interested in BROADCAST/MULTICAST/ANYCAST
517 { action => 'PVEFW-DropBroadcast' },
518 # ACCEPT critical ICMP types
519 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
520 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
521 # Drop packets with INVALID state
522 "-m conntrack --ctstate INVALID -j DROP",
523 # Drop Microsoft SMB noise
524 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
525 { action => 'DROP', proto => 'udp', dport => '137:139'},
526 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
527 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
528 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
529 # Drop new/NotSyn traffic so that it doesn't get logged
530 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
531 # Drop DNS replies
532 { action => 'DROP', proto => 'udp', sport => 53 },
533 ],
534 'PVEFW-Reject' => [
cbb5d6f3 535 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 536 # but REJECT/DROP some packages to reduce logging,
537 # and ACCEPT critical ICMP types
538 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
539 # we are not interested in BROADCAST/MULTICAST/ANYCAST
540 { action => 'PVEFW-DropBroadcast' },
541 # ACCEPT critical ICMP types
542 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
543 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
544 # Drop packets with INVALID state
545 "-m conntrack --ctstate INVALID -j DROP",
546 # Drop Microsoft SMB noise
547 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
548 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
549 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
550 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
551 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
552 # Drop new/NotSyn traffic so that it doesn't get logged
553 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
554 # Drop DNS replies
555 { action => 'DROP', proto => 'udp', sport => 53 },
556 ],
d86659ef
DM		 557 'PVEFW-tcpflags' => [
558 # same as shorewall tcpflags action.
559 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
560 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
561 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
562 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
563 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
564 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
565 ],
bee633ab
DM		 566 'PVEFW-smurfs' => [
567 # same as shorewall smurfs action
568 # Filter packets for smurfs (packets with a broadcast address as the source).
569 "-s 0.0.0.0/32 -j RETURN",
570 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
571 "-s 224.0.0.0/4 -g PVEFW-smurflog",
572 ],
d8f2505e
DM		 573};
574
4b586518
DM		 575# iptables -p icmp -h
576my $icmp_type_names = {
577 any => 1,
578 'echo-reply' => 1,
579 'destination-unreachable' => 1,
580 'network-unreachable' => 1,
581 'host-unreachable' => 1,
582 'protocol-unreachable' => 1,
583 'port-unreachable' => 1,
584 'fragmentation-needed' => 1,
585 'source-route-failed' => 1,
586 'network-unknown' => 1,
587 'host-unknown' => 1,
588 'network-prohibited' => 1,
589 'host-prohibited' => 1,
590 'TOS-network-unreachable' => 1,
591 'TOS-host-unreachable' => 1,
592 'communication-prohibited' => 1,
593 'host-precedence-violation' => 1,
594 'precedence-cutoff' => 1,
595 'source-quench' => 1,
596 'redirect' => 1,
597 'network-redirect' => 1,
598 'host-redirect' => 1,
599 'TOS-network-redirect' => 1,
600 'TOS-host-redirect' => 1,
601 'echo-request' => 1,
602 'router-advertisement' => 1,
603 'router-solicitation' => 1,
604 'time-exceeded' => 1,
605 'ttl-zero-during-transit' => 1,
606 'ttl-zero-during-reassembly' => 1,
607 'parameter-problem' => 1,
608 'ip-header-bad' => 1,
609 'required-option-missing' => 1,
610 'timestamp-request' => 1,
611 'timestamp-reply' => 1,
612 'address-mask-request' => 1,
613 'address-mask-reply' => 1,
614};
615
54cd19a8 616sub init_firewall_macros {
6158271d 617
961b4928 618 $pve_fw_parsed_macros = {};
9aab3127 619
961b4928 620 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 621 my $lc_name = lc($k);
622 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 623 if (!ref($macro->[0])) {
624 $pve_fw_macro_descr->{$k} = shift @$macro;
625 }
e5076eee
DM		 626 $pve_fw_preferred_macro_names->{$lc_name} = $k;
627 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 628 }
9aab3127
DM		 629}
630
54cd19a8
DM		 631init_firewall_macros();
632
ebd54ae9
DM		 633sub get_macros {
634 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
635}
636
fcba0beb
DM		 637my $etc_services;
638
639sub get_etc_services {
640
641 return $etc_services if $etc_services;
642
643 my $filename = "/etc/services";
644
645 my $fh = IO::File->new($filename, O_RDONLY);
646 if (!$fh) {
647 warn "unable to read '$filename' - $!\n";
648 return {};
649 }
650
651 my $services = {};
652
653 while (my $line = <$fh>) {
654 chomp ($line);
655 next if $line =~m/^#/;
656 next if ($line =~m/^\s*$/);
657
658 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
659 $services->{byid}->{$2}->{name} = $1;
35b66e9d 660 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 661 $services->{byid}->{$2}->{$3} = 1;
662 $services->{byname}->{$1} = $services->{byid}->{$2};
663 }
664 }
665
666 close($fh);
667
6158271d
DM		 668 $etc_services = $services;
669
3a616aa0 670
fcba0beb
DM		 671 return $etc_services;
672}
673
674my $etc_protocols;
675
676sub get_etc_protocols {
677 return $etc_protocols if $etc_protocols;
678
679 my $filename = "/etc/protocols";
680
681 my $fh = IO::File->new($filename, O_RDONLY);
682 if (!$fh) {
683 warn "unable to read '$filename' - $!\n";
684 return {};
685 }
686
687 my $protocols = {};
688
689 while (my $line = <$fh>) {
690 chomp ($line);
691 next if $line =~m/^#/;
692 next if ($line =~m/^\s*$/);
693
694 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
695 $protocols->{byid}->{$2}->{name} = $1;
696 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
697 }
698 }
699
700 close($fh);
701
702 $etc_protocols = $protocols;
703
704 return $etc_protocols;
705}
706
525778d7 707my $ipv4_mask_hash_localnet = {
93be4333
DM		 708 '255.255.0.0' => 16,
709 '255.255.128.0' => 17,
710 '255.255.192.0' => 18,
711 '255.255.224.0' => 19,
712 '255.255.240.0' => 20,
713 '255.255.248.0' => 21,
714 '255.255.252.0' => 22,
715 '255.255.254.0' => 23,
716 '255.255.255.0' => 24,
717 '255.255.255.128' => 25,
718 '255.255.255.192' => 26,
719 '255.255.255.224' => 27,
720 '255.255.255.240' => 28,
721 '255.255.255.248' => 29,
722 '255.255.255.252' => 30,
723};
724
525778d7 725my $__local_network;
93be4333 726
525778d7 727sub local_network {
ac633d30 728 my ($new_value) = @_;
93be4333 729
525778d7 730 $__local_network = $new_value if defined($new_value);
ac633d30 731
525778d7 732 return $__local_network if defined($__local_network);
93be4333
DM		 733
734 eval {
735 my $nodename = PVE::INotify::nodename();
736
737 my $ip = PVE::Cluster::remote_node_ip($nodename);
738
739 my $testip = Net::IP->new($ip);
bfc488f6 740
93be4333
DM		 741 my $routes = PVE::ProcFSTools::read_proc_net_route();
742 foreach my $entry (@$routes) {
525778d7 743 my $mask = $ipv4_mask_hash_localnet->{$entry->{mask}};
93be4333
DM		 744 next if !defined($mask);
745 return if $mask eq '0.0.0.0';
746 my $cidr = "$entry->{dest}/$mask";
747 my $testnet = Net::IP->new($cidr);
748 if ($testnet->overlaps($testip)) {
525778d7 749 $__local_network = $cidr;
93be4333
DM		 750 return;
751 }
752 }
753 };
754 warn $@ if $@;
755
525778d7 756 return $__local_network;
93be4333
DM		 757}
758
6d959e3f
DM		 759# ipset names are limited to 31 characters,
760# and we use '-v4' or '-v6' to indicate IP versions,
761# and we use '_swap' suffix for atomic update,
762# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 763
6d959e3f 764my $max_iptables_ipset_name_length = 31 - length("_swap") - length("-v4");
708ba714
DM		 765
766sub compute_ipset_chain_name {
767 my ($vmid, $ipset_name) = @_;
768
769 $vmid = 0 if !defined($vmid);
770
771 my $id = "$vmid-${ipset_name}";
772
e2c62733 773 if ((length($id) + 6) > $max_iptables_ipset_name_length) {
708ba714
DM		 774 $id = PVE::Tools::fnv31a_hex($id);
775 }
776
777 return "PVEFW-$id";
778}
779
b692f42c
DM		 780sub compute_ipfilter_ipset_name {
781 my ($iface) = @_;
782
783 return "ipfilter-$iface";
784}
785
ecbea048
DM		 786sub parse_address_list {
787 my ($str) = @_;
788
e2c62733
DM		 789 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
790 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
791 return;
792 }
793
794 if ($str =~ m/^${ip_alias_pattern}$/) {
795 die "alias name too long\n" if length($str) > $max_alias_name_length;
796 return;
797 }
d72beb8e 798
3162af6b
DM		 799 my $count = 0;
800 my $iprange = 0;
a589b6ac 801 my $ipversion;
7697c041 802
3162af6b
DM		 803 foreach my $elem (split(/,/, $str)) {
804 $count++;
c344e509
DM		 805 my $ip = Net::IP->new($elem);
806 if (!$ip) {
ecbea048
DM		 807 my $err = Net::IP::Error();
808 die "invalid IP address: $err\n";
809 }
3162af6b 810 $iprange = 1 if $elem =~ m/-/;
a589b6ac 811
c344e509 812 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM		 813
814 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 815 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM		 816
817 $ipversion = $new_ipversion;
ecbea048 818 }
e34d0e58 819
5163367b 820 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 821
7697c041 822 return $ipversion;
ecbea048 823}
dddd9413 824
fcba0beb
DM		 825sub parse_port_name_number_or_range {
826 my ($str) = @_;
827
828 my $services = PVE::Firewall::get_etc_services();
7ca36671 829 my $count = 0;
041b7e8e
DM		 830 my $icmp_port = 0;
831
fcba0beb 832 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 833 $count++;
834 if ($item =~ m/^(\d+):(\d+)$/) {
835 my ($port1, $port2) = ($1, $2);
836 die "invalid port '$port1'\n" if $port1 > 65535;
837 die "invalid port '$port2'\n" if $port2 > 65535;
838 } elsif ($item =~ m/^(\d+)$/) {
839 my $port = $1;
840 die "invalid port '$port'\n" if $port > 65535;
841 } else {
041b7e8e
DM		 842 if ($icmp_type_names->{$item}) {
843 $icmp_port = 1;
844 } else {
e34d0e58 845 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 846 }
fcba0beb
DM		 847 }
848 }
849
041b7e8e
DM		 850 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
851
7ca36671 852 return $count;
fcba0beb
DM		 853}
854
54cd19a8
DM		 855PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
856sub pve_fw_verify_port_spec {
857 my ($portstr) = @_;
858
7ca36671 859 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 860
861 return $portstr;
862}
863
d31689ee
DM		 864PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
865sub pve_fw_verify_addr_spec {
54cd19a8
DM		 866 my ($list) = @_;
867
868 parse_address_list($list);
869
870 return $list;
871}
872
873PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
874sub pve_fw_verify_protocol_spec {
875 my ($proto) = @_;
876
877 my $protocols = get_etc_protocols();
878
879 die "unknown protocol '$proto'\n" if $proto &&
880 !(defined($protocols->{byname}->{$proto}) ||
881 defined($protocols->{byid}->{$proto}));
882
883 return $proto;
884}
885
886
d1c53b3e 887# helper function for API
d1c53b3e 888
5d38d64f
DM		 889sub copy_opject_with_digest {
890 my ($object) = @_;
891
892 my $sha = Digest::SHA->new('sha1');
893
894 my $res = {};
895 foreach my $k (sort keys %$object) {
896 my $v = $object->{$k};
0365eb68 897 next if !defined($v);
5d38d64f
DM		 898 $res->{$k} = $v;
899 $sha->add($k, ':', $v, "\n");
900 }
901
55e686c7 902 my $digest = $sha->hexdigest;
5d38d64f
DM		 903
904 $res->{digest} = $digest;
905
906 return wantarray ? ($res, $digest) : $res;
907}
908
909sub copy_list_with_digest {
910 my ($list) = @_;
911
912 my $sha = Digest::SHA->new('sha1');
913
914 my $res = [];
915 foreach my $entry (@$list) {
916 my $data = {};
917 foreach my $k (sort keys %$entry) {
918 my $v = $entry->{$k};
0365eb68 919 next if !defined($v);
5d38d64f 920 $data->{$k} = $v;
6d9246e7
DM		 921 # Note: digest ignores refs ($rule->{errors})
922 $sha->add($k, ':', $v, "\n") if !ref($v); ;
5d38d64f
DM		 923 }
924 push @$res, $data;
925 }
926
55e686c7 927 my $digest = $sha->hexdigest;
5d38d64f
DM		 928
929 foreach my $entry (@$res) {
930 $entry->{digest} = $digest;
931 }
932
933 return wantarray ? ($res, $digest) : $res;
934}
935
9c7e0858
DM		 936my $rule_properties = {
937 pos => {
938 description => "Update rule at position <pos>.",
939 type => 'integer',
940 minimum => 0,
941 optional => 1,
942 },
c71e785f 943 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 944 type => {
945 type => 'string',
946 optional => 1,
947 enum => ['in', 'out', 'group'],
948 },
949 action => {
c14dacdf 950 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 951 type => 'string',
952 optional => 1,
44be8ceb 953 pattern => $security_group_name_pattern,
c14dacdf
DM		 954 maxLength => 20,
955 minLength => 2,
9c7e0858 956 },
e5076eee
DM		 957 macro => {
958 type => 'string',
959 optional => 1,
54cd19a8 960 maxLength => 128,
e5076eee 961 },
54cd19a8 962 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 963 source => {
d31689ee 964 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 965 optional => 1,
966 },
967 dest => {
d31689ee 968 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 969 optional => 1,
970 },
971 proto => {
54cd19a8 972 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 973 optional => 1,
974 },
975 enable => {
976 type => 'boolean',
977 optional => 1,
978 },
979 sport => {
54cd19a8 980 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 981 optional => 1,
982 },
983 dport => {
54cd19a8 984 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 985 optional => 1,
986 },
987 comment => {
988 type => 'string',
989 optional => 1,
990 },
991};
992
993sub add_rule_properties {
994 my ($properties) = @_;
995
996 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 997 my $h = $rule_properties->{$k};
998 # copy data, so that we can modify later without side effects
999 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1000 }
cbb5d6f3 1001
9c7e0858
DM		 1002 return $properties;
1003}
1004
5b7974df
DM		 1005sub delete_rule_properties {
1006 my ($rule, $delete_str) = @_;
e34d0e58 1007
5b7974df
DM		 1008 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1009 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1010 if !defined($rule_properties->{$opt});
1011 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1012 if $opt eq 'type' || $opt eq 'action';
1013 delete $rule->{$opt};
1014 }
1015
1016 return $rule;
1017}
1018
9a2745a0
DM		 1019my $apply_macro = sub {
1020 my ($macro_name, $param, $verify) = @_;
1021
1022 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1023 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1024
1025 my $rules = [];
1026
1027 foreach my $templ (@$macro_rules) {
1028 my $rule = {};
1029 my $param_used = {};
1030 foreach my $k (keys %$templ) {
1031 my $v = $templ->{$k};
1032 if ($v eq 'PARAM') {
1033 $v = $param->{$k};
1034 $param_used->{$k} = 1;
1035 } elsif ($v eq 'DEST') {
1036 $v = $param->{dest};
1037 $param_used->{dest} = 1;
1038 } elsif ($v eq 'SOURCE') {
1039 $v = $param->{source};
1040 $param_used->{source} = 1;
1041 }
1042
1043 if (!defined($v)) {
1044 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1045 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1046 die "$msg\n";
1047 }
1048 $rule->{$k} = $v;
1049 }
1050 foreach my $k (keys %$param) {
1051 next if $k eq 'macro';
1052 next if !defined($param->{$k});
1053 next if $param_used->{$k};
1054 if (defined($rule->{$k})) {
1055 if ($rule->{$k} ne $param->{$k}) {
1056 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1057 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1058 die "$msg\n";
1059 }
1060 } else {
1061 $rule->{$k} = $param->{$k};
1062 }
1063 }
1064 push @$rules, $rule;
1065 }
1066
1067 return $rules;
1068};
1069
b6b8e6ad
DM		 1070my $rule_env_iface_lookup = {
1071 'ct' => 1,
1072 'vm' => 1,
1073 'group' => 0,
1074 'cluster' => 1,
1075 'host' => 1,
1076};
1077
7ca36671 1078sub verify_rule {
a523e057 1079 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1080
1081 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1082
b6b8e6ad
DM		 1083 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1084 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1085
a523e057
DM		 1086 my $errors = $rule->{errors} || {};
1087
6d9246e7 1088 my $error_count = 0;
7ca36671 1089
6d9246e7
DM		 1090 my $add_error = sub {
1091 my ($param, $msg) = @_;
d4cda423 1092 chomp $msg;
6d9246e7
DM		 1093 raise_param_exc({ $param => $msg }) if !$noerr;
1094 $error_count++;
1095 $errors->{$param} = $msg if !$errors->{$param};
1096 };
1097
a523e057 1098 my $check_ipset_or_alias_property = sub {
ae029a88 1099 my ($name, $expected_ipversion) = @_;
a523e057
DM		 1100
1101 if (my $value = $rule->{$name}) {
1102 if ($value =~ m/^\+/) {
4dfe04e6 1103 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1104 &$add_error($name, "no such ipset '$1'")
a523e057 1105 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1106
a523e057 1107 } else {
351052d1 1108 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1109 }
1110 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1111 my $alias = lc($value);
bfc488f6 1112 &$add_error($name, "no such alias '$value'")
70e524eb
AD		 1113 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
1114
1115 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
1116 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1117
ae029a88
DM		 1118 die "detected mixed ipv4/ipv6 adresses in rule\n"
1119 if $expected_ipversion && ($expected_ipversion != $e->{ipversion});
a523e057
DM		 1120 }
1121 }
1122 };
1123
6d9246e7
DM		 1124 my $type = $rule->{type};
1125 my $action = $rule->{action};
bfc488f6 1126
6d9246e7
DM		 1127 &$add_error('type', "missing property") if !$type;
1128 &$add_error('action', "missing property") if !$action;
1129
1130 if ($type) {
1131 if ($type eq 'in' || $type eq 'out') {
1132 &$add_error('action', "unknown action '$action'")
1133 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1134 } elsif ($type eq 'group') {
1135 &$add_error('type', "security groups not allowed")
1136 if !$allow_groups;
1137 &$add_error('action', "invalid characters in security group name")
1138 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1139 } else {
1140 &$add_error('type', "unknown rule type '$type'");
1141 }
7ca36671 1142 }
e34d0e58 1143
dba740a9 1144 if ($rule->{iface}) {
bfc488f6 1145 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1146 if !$allow_iface;
dba740a9 1147 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1148 &$add_error('iface', $@) if $@;
b6b8e6ad
DM		 1149 if ($rule_env eq 'vm') {
1150 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1151 if $rule->{iface} !~ m/^net(\d+)$/;
1152 } elsif ($rule_env eq 'ct') {
1153 &$add_error('iface', "value does not match the regex pattern '(venet|eth\\d+)'")
1154 if $rule->{iface} !~ m/^(venet|eth(\d+))$/;
1155 }
1156 }
7ca36671
DM		 1157
1158 if ($rule->{macro}) {
6d9246e7
DM		 1159 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1160 $rule->{macro} = $preferred_name;
1161 } else {
1162 &$add_error('macro', "unknown macro '$rule->{macro}'");
1163 }
1164 }
1165
1166 if ($rule->{proto}) {
1167 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1168 &$add_error('proto', $@) if $@;
1169 }
7ca36671
DM		 1170
1171 if ($rule->{dport}) {
1172 eval { parse_port_name_number_or_range($rule->{dport}); };
6d9246e7
DM		 1173 &$add_error('dport', $@) if $@;
1174 &$add_error('proto', "missing property - 'dport' requires this property")
914f9a50 1175 if !$rule->{proto};
6d9246e7 1176 }
7ca36671
DM		 1177
1178 if ($rule->{sport}) {
1179 eval { parse_port_name_number_or_range($rule->{sport}); };
6d9246e7
DM		 1180 &$add_error('sport', $@) if $@;
1181 &$add_error('proto', "missing property - 'sport' requires this property")
914f9a50 1182 if !$rule->{proto};
7ca36671
DM		 1183 }
1184
9e2205e5
DM		 1185 my $ipversion;
1186
7ca36671 1187 if ($rule->{source}) {
7697c041 1188 eval { $ipversion = parse_address_list($rule->{source}); };
6d9246e7 1189 &$add_error('source', $@) if $@;
ae029a88 1190 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1191 }
1192
1193 if ($rule->{dest}) {
9e2205e5
DM		 1194 eval {
1195 my $dest_ipversion = parse_address_list($rule->{dest});
1196 die "detected mixed ipv4/ipv6 adresses in rule\n"
ae029a88
DM		 1197 if $ipversion && $dest_ipversion && ($dest_ipversion != $ipversion);
1198 $ipversion = $dest_ipversion if $dest_ipversion;
9e2205e5 1199 };
6d9246e7 1200 &$add_error('dest', $@) if $@;
ae029a88 1201 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1202 }
1203
a523e057 1204 if ($rule->{macro} && !$error_count) {
6d9246e7
DM		 1205 eval { &$apply_macro($rule->{macro}, $rule, 1); };
1206 if (my $err = $@) {
1207 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1208 my $eh = $err->{errors};
1209 foreach my $p (keys %$eh) {
1210 &$add_error($p, $eh->{$p});
1211 }
1212 } else {
1213 &$add_error('macro', "$err");
1214 }
1215 }
9a2745a0
DM		 1216 }
1217
6d9246e7 1218 $rule->{errors} = $errors if $error_count;
7697c041 1219 $rule->{ipversion} = $ipversion if $ipversion;
6d9246e7 1220
7ca36671
DM		 1221 return $rule;
1222}
1223
9c7e0858
DM		 1224sub copy_rule_data {
1225 my ($rule, $param) = @_;
1226
1227 foreach my $k (keys %$rule_properties) {
1228 if (defined(my $v = $param->{$k})) {
1229 if ($v eq '' || $v eq '-') {
1230 delete $rule->{$k};
1231 } else {
1232 $rule->{$k} = $v;
1233 }
9c7e0858
DM		 1234 }
1235 }
7ca36671 1236
9c7e0858
DM		 1237 return $rule;
1238}
1239
9f6845cf
DM		 1240sub rules_modify_permissions {
1241 my ($rule_env) = @_;
1242
1243 if ($rule_env eq 'host') {
1244 return {
1245 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1246 };
1247 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1248 return {
1249 check => ['perm', '/', [ 'Sys.Modify' ]],
1250 };
1251 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1252 return {
1253 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1254 }
1255 }
1256
1257 return undef;
1258}
1259
1260sub rules_audit_permissions {
1261 my ($rule_env) = @_;
1262
1263 if ($rule_env eq 'host') {
1264 return {
1265 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1266 };
1267 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1268 return {
1269 check => ['perm', '/', [ 'Sys.Audit' ]],
1270 };
1271 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1272 return {
1273 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1274 }
1275 }
1276
1277 return undef;
1278}
1279
9c7e0858 1280# core functions
780bcc0f
DM		 1281my $bridge_firewall_enabled = 0;
1282
1283sub enable_bridge_firewall {
1284
1285 return if $bridge_firewall_enabled; # only once
1286
5f0a912c
DM		 1287 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1288 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1289
6a8a75db
DM		 1290 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1291 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1292
780bcc0f
DM		 1293 $bridge_firewall_enabled = 1;
1294}
1295
8cebfa6f 1296my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1297
b16e818e
DM		 1298sub iptables_restore_cmdlist {
1299 my ($cmdlist) = @_;
3a616aa0 1300
3fa83edf 1301 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 1302}
1303
34cdedfa
AD		 1304sub ipset_restore_cmdlist {
1305 my ($cmdlist) = @_;
1306
dd7a13fd 1307 run_command("/usr/sbin/ipset restore", input => $cmdlist);
34cdedfa
AD		 1308}
1309
de2a57cd
DM		 1310sub iptables_get_chains {
1311
1312 my $res = {};
1313
1314 # check what chains we want to track
1315 my $is_pvefw_chain = sub {
1316 my $name = shift;
1317
dec84fcd
DM		 1318 return 1 if $name =~ m/^PVEFW-\S+$/;
1319
de2a57cd 1320 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1321
1322 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1323
9e15114a
DM		 1324 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1325
a01c32c7 1326 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1327 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1328
1329 return undef;
1330 };
1331
1332 my $table = '';
1333
c4a2e5ae
DM		 1334 my $hooks = {};
1335
de2a57cd
DM		 1336 my $parser = sub {
1337 my $line = shift;
1338
1339 return if $line =~ m/^#/;
1340 return if $line =~ m/^\s*$/;
1341
1342 if ($line =~ m/^\*(\S+)$/) {
1343 $table = $1;
1344 return;
1345 }
1346
1347 return if $table ne 'filter';
1348
1349 if ($line =~ m/^:(\S+)\s/) {
1350 my $chain = $1;
1351 return if !&$is_pvefw_chain($chain);
3fa83edf 1352 $res->{$chain} = "unknown";
09d5f68e 1353 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1354 my ($chain, $sig) = ($1, $2);
de2a57cd 1355 return if !&$is_pvefw_chain($chain);
3fa83edf 1356 $res->{$chain} = $sig;
c4a2e5ae
DM		 1357 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1358 $hooks->{$1} = 1;
de2a57cd
DM		 1359 } else {
1360 # simply ignore the rest
1361 return;
1362 }
1363 };
1364
1365 run_command("/sbin/iptables-save", outfunc => $parser);
1366
c4a2e5ae 1367 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1368}
1369
9bf7d929
DM		 1370sub iptables_chain_digest {
1371 my ($rules) = @_;
1372 my $digest = Digest::SHA->new('sha1');
1373 foreach my $rule (@$rules) { # order is important
1374 $digest->add($rule);
1375 }
1376 return $digest->b64digest;
1377}
1378
3f95d14a
DM		 1379sub ipset_chain_digest {
1380 my ($rules) = @_;
4bd0a9c4 1381
3f95d14a
DM		 1382 my $digest = Digest::SHA->new('sha1');
1383 foreach my $rule (sort @$rules) { # note: sorted
1384 $digest->add($rule);
1385 }
1386 return $digest->b64digest;
1387}
1388
34cdedfa
AD		 1389sub ipset_get_chains {
1390
1391 my $res = {};
1392 my $chains = {};
1393
1394 my $parser = sub {
1395 my $line = shift;
1396
1397 return if $line =~ m/^#/;
1398 return if $line =~ m/^\s*$/;
4b96e877 1399 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1400 my $chain = $1;
1401 $line =~ s/\s+$//; # delete trailing white space
1402 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1403 } else {
1404 # simply ignore the rest
1405 return;
1406 }
1407 };
1408
3f95d14a 1409 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1410
3f95d14a
DM		 1411 # compute digest for each chain
1412 foreach my $chain (keys %$chains) {
1413 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1414 }
1415
1416 return $res;
1417}
1418
eba0fb64 1419sub ruleset_generate_cmdstr {
e523d2bb 1420 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
3a616aa0 1421
00bb4391 1422 return if defined($rule->{enable}) && !$rule->{enable};
6d9246e7 1423 return if $rule->{errors};
11bac5c2 1424
e5076eee
DM		 1425 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1426
1427 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1428 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1429
41524a58 1430 my @cmd = ();
3a616aa0 1431
eba0fb64
DM		 1432 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1433 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1434
ba791b1f
AD		 1435 my $source = $rule->{source};
1436 my $dest = $rule->{dest};
1437
cbb5d6f3 1438 if ($source) {
44be8ceb 1439 if ($source =~ m/^\+/) {
4dfe04e6 1440 if ($source =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1441 my $name = $1;
1442 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
708ba714
DM		 1443 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
1444 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb 1445 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
708ba714
DM		 1446 my $ipset_chain = compute_ipset_chain_name(0, $name);
1447 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb
DM		 1448 } else {
1449 die "no such ipset '$name'\n";
1450 }
44be8ceb
DM		 1451 } else {
1452 die "invalid security group name '$source'\n";
1453 }
1454 } elsif ($source =~ m/^${ip_alias_pattern}$/){
81d574a7 1455 my $alias = lc($source);
bfc488f6 1456 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
e523d2bb
DM		 1457 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1458 die "no such alias '$source'\n" if !$e;
81d574a7 1459 push @cmd, "-s $e->{cidr}";
ac8242cc 1460 } elsif ($source =~ m/\-/){
ba791b1f 1461 push @cmd, "-m iprange --src-range $source";
cbb5d6f3 1462 } else {
ba791b1f
AD		 1463 push @cmd, "-s $source";
1464 }
1465 }
1466
cbb5d6f3 1467 if ($dest) {
44be8ceb 1468 if ($dest =~ m/^\+/) {
4dfe04e6 1469 if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1470 my $name = $1;
1471 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
708ba714 1472 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
ac4580a0 1473 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb 1474 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
708ba714
DM		 1475 my $ipset_chain = compute_ipset_chain_name(0, $name);
1476 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb
DM		 1477 } else {
1478 die "no such ipset '$name'\n";
1479 }
44be8ceb
DM		 1480 } else {
1481 die "invalid security group name '$dest'\n";
1482 }
1483 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
51b40846 1484 my $alias = lc($dest);
bfc488f6 1485 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
e523d2bb
DM		 1486 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1487 die "no such alias '$dest'\n" if !$e;
81d574a7 1488 push @cmd, "-d $e->{cidr}";
cbb5d6f3 1489 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f 1490 push @cmd, "-m iprange --dst-range $dest";
cbb5d6f3 1491 } else {
d6d2a385 1492 push @cmd, "-d $dest";
ba791b1f
AD		 1493 }
1494 }
4b586518 1495
181390b0 1496 if ($rule->{proto}) {
41524a58 1497 push @cmd, "-p $rule->{proto}";
e3a1d391 1498
181390b0 1499 my $multiport = 0;
e5076eee
DM		 1500 $multiport++ if $nbdport > 1;
1501 $multiport++ if $nbsport > 1;
e3a1d391 1502
41524a58 1503 push @cmd, "--match multiport" if $multiport;
4b586518 1504
cbb5d6f3 1505 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1506 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1507
1508 if ($rule->{dport}) {
1509 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1510 # Note: we use dport to store --icmp-type
1511 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1512 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 1513 } else {
e5076eee 1514 if ($nbdport > 1) {
181390b0 1515 if ($multiport == 2) {
41524a58 1516 push @cmd, "--ports $rule->{dport}";
181390b0 1517 } else {
41524a58 1518 push @cmd, "--dports $rule->{dport}";
181390b0 1519 }
e3a1d391 1520 } else {
41524a58 1521 push @cmd, "--dport $rule->{dport}";
e3a1d391 1522 }
4b586518
DM		 1523 }
1524 }
4b586518 1525
181390b0 1526 if ($rule->{sport}) {
e5076eee 1527 if ($nbsport > 1) {
41524a58 1528 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1529 } else {
41524a58 1530 push @cmd, "--sport $rule->{sport}";
181390b0 1531 }
4b586518 1532 }
181390b0 1533 } elsif ($rule->{dport} || $rule->{sport}) {
93d96f83
DM		 1534 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
1535 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
4b586518
DM		 1536 }
1537
41524a58 1538 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1539
1540 if (my $action = $rule->{action}) {
cbb5d6f3 1541 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1542 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1543 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1544 }
3a616aa0 1545
eba0fb64
DM		 1546 return scalar(@cmd) ? join(' ', @cmd) : undef;
1547}
1548
1549sub ruleset_generate_rule {
e523d2bb 1550 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
eba0fb64 1551
e5076eee
DM		 1552 my $rules;
1553
1554 if ($rule->{macro}) {
1555 $rules = &$apply_macro($rule->{macro}, $rule);
1556 } else {
1557 $rules = [ $rule ];
1558 }
1559
d4091b82
DM		 1560 # update all or nothing
1561
1562 my @cmds = ();
cbb5d6f3 1563 foreach my $tmp (@$rules) {
e523d2bb 1564 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
d4091b82 1565 push @cmds, $cmdstr;
e5076eee 1566 }
41524a58 1567 }
d4091b82
DM		 1568
1569 foreach my $cmdstr (@cmds) {
1570 ruleset_addrule($ruleset, $chain, $cmdstr);
1571 }
3fa83edf 1572}
0f168d7b 1573
eba0fb64
DM		 1574sub ruleset_generate_rule_insert {
1575 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1576
e5076eee
DM		 1577 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1578
eba0fb64
DM		 1579 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1580 ruleset_insertrule($ruleset, $chain, $cmdstr);
1581 }
1582}
3fa83edf
DM		 1583
1584sub ruleset_create_chain {
1585 my ($ruleset, $chain) = @_;
3a616aa0 1586
d050c724 1587 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1588 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1589
3fa83edf
DM		 1590 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1591
1592 $ruleset->{$chain} = [];
3a616aa0
AD		 1593}
1594
3fa83edf
DM		 1595sub ruleset_chain_exist {
1596 my ($ruleset, $chain) = @_;
3a616aa0 1597
3fa83edf
DM		 1598 return $ruleset->{$chain} ? 1 : undef;
1599}
3a616aa0 1600
3fa83edf
DM		 1601sub ruleset_addrule {
1602 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1603
3fa83edf 1604 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1605
3fa83edf
DM		 1606 push @{$ruleset->{$chain}}, "-A $chain $rule";
1607}
3a616aa0 1608
3fa83edf
DM		 1609sub ruleset_insertrule {
1610 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1611
3fa83edf 1612 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1613
3fa83edf
DM		 1614 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1615}
3a616aa0 1616
782c4cde
DM		 1617sub get_log_rule_base {
1618 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1619
782c4cde
DM		 1620 die "internal error - no log level" if !defined($loglevel);
1621
1622 $vmid = 0 if !defined($vmid);
1623
cbb5d6f3 1624 # Note: we use special format for prefix to pass further
782c4cde
DM		 1625 # info to log daemon (VMID, LOGVELEL and CHAIN)
1626
1627 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1628}
1629
1630sub ruleset_addlog {
1631 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1632
1633 return if !defined($loglevel);
1634
1635 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1636
1637 $logrule = "$rule $logrule" if defined($rule);
1638
88733a74 1639 ruleset_addrule($ruleset, $chain, $logrule);
782c4cde
DM		 1640}
1641
ead850e8 1642sub ruleset_add_chain_policy {
782c4cde 1643 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1644
1645 if ($policy eq 'ACCEPT') {
1646
1647 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1648 { ACCEPT => $accept_action});
1649
1650 } elsif ($policy eq 'DROP') {
1651
1652 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1653
782c4cde 1654 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1655
1656 ruleset_addrule($ruleset, $chain, "-j DROP");
1657 } elsif ($policy eq 'REJECT') {
1658 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1659
782c4cde 1660 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1661
1662 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1663 } else {
1664 # should not happen
1665 die "internal error: unknown policy '$policy'";
1666 }
1667}
1668
e2943485
DM		 1669sub ruleset_chain_add_conn_filters {
1670 my ($ruleset, $chain, $accept) = @_;
1671
1672 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1673 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1674}
1675
1676sub ruleset_chain_add_input_filters {
2428e394
AD		 1677 my ($ruleset, $chain, $options, $cluster_conf, $loglevel) = @_;
1678
1679 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 1680 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
1681 ruleset_create_chain($ruleset, "PVEFW-blacklist");
1682 ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel;
1683 ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP");
1684 }
708ba714
DM		 1685 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist');
1686 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist");
2428e394 1687 }
e2943485
DM		 1688
1689 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1690 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1691 }
1692
1693 if ($options->{tcpflags}) {
1694 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1695 }
1696}
1697
9e15114a 1698sub ruleset_create_vm_chain {
808d711d 1699 my ($ruleset, $chain, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 1700
9e15114a 1701 ruleset_create_chain($ruleset, $chain);
b47ecc88 1702 my $accept = generate_nfqueue($options);
3a616aa0 1703
ce15d90b 1704 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1705 if ($direction eq 'OUT') {
cbb5d6f3 1706 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1707 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1708 } else {
cbb5d6f3 1709 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1710 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1711 }
ce15d90b
DM		 1712 }
1713
b21aca2c
DM		 1714 if ($direction eq 'OUT') {
1715 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1716 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1717 }
808d711d
DM		 1718 if ($ipfilter_ipset) {
1719 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src -j DROP");
1720 }
9e15114a 1721 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1722 }
9e15114a
DM		 1723}
1724
4bc6b5ac 1725sub ruleset_add_group_rule {
aedde2c2 1726 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 1727
1728 my $group = $rule->{action};
1729 my $group_chain = "GROUP-$group-$direction";
1730 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 1731 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 1732 }
bfc488f6 1733
f8b12fff
DM		 1734 if ($direction eq 'OUT' && $rule->{iface_out}) {
1735 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain");
1736 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1737 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain");
4bc6b5ac
DM		 1738 } else {
1739 ruleset_addrule($ruleset, $chain, "-j $group_chain");
1740 }
1741
1742 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action");
1743}
1744
9e15114a 1745sub ruleset_generate_vm_rules {
84870b1a 1746 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_;
9e15114a
DM		 1747
1748 my $lc_direction = lc($direction);
c29f55c9 1749
6b8ca015
DM		 1750 my $in_accept = generate_nfqueue($options);
1751
92e976b3
DM		 1752 foreach my $rule (@$rules) {
1753 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 1754 next if !$rule->{enable} || $rule->{errors};
006490cb 1755 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 1756
92e976b3 1757 if ($rule->{type} eq 'group') {
4bc6b5ac 1758 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 1759 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 1760 } else {
1761 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1762 eval {
1763 if ($direction eq 'OUT') {
1764 ruleset_generate_rule($ruleset, $chain, $rule,
e34d0e58 1765 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
e523d2bb 1766 undef, $cluster_conf, $vmfw_conf);
921dfb33 1767 } else {
e34d0e58
DM		 1768 ruleset_generate_rule($ruleset, $chain, $rule,
1769 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
e523d2bb 1770 undef, $cluster_conf, $vmfw_conf);
921dfb33
DM		 1771 }
1772 };
1773 warn $@ if $@;
4e6112f9 1774 }
3a616aa0 1775 }
9e15114a
DM		 1776}
1777
b47ecc88
AD		 1778sub generate_nfqueue {
1779 my ($options) = @_;
1780
73089769
DM		 1781 if ($options->{ips}) {
1782 my $action = "NFQUEUE";
1783 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1784 if (defined($3) && defined($1)) {
b47ecc88 1785 $action .= " --queue-balance $1:$3";
73089769 1786 } elsif (defined($1)) {
b47ecc88
AD		 1787 $action .= " --queue-num $1";
1788 }
1789 }
8dc92812 1790 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1791 return $action;
1792 } else {
1793 return "ACCEPT";
b47ecc88 1794 }
b47ecc88
AD		 1795}
1796
da6fc60b 1797sub ruleset_generate_vm_ipsrules {
a01c32c7 1798 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 1799
1800 if ($options->{ips} && $direction eq 'IN') {
1801 my $nfqueue = generate_nfqueue($options);
1802
a01c32c7 1803 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 1804 ruleset_create_chain($ruleset, "PVEFW-IPS");
1805 }
1806
a01c32c7 1807 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
da6fc60b
AD		 1808 }
1809}
1810
9e15114a 1811sub generate_venet_rules_direction {
84870b1a 1812 my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction, $ipversion) = @_;
9e15114a 1813
9e15114a
DM		 1814 my $lc_direction = lc($direction);
1815
1816 my $rules = $vmfw_conf->{rules};
1817
1818 my $options = $vmfw_conf->{options};
1819 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1820
1821 my $chain = "venet0-$vmid-$direction";
1822
a34cfdd0 1823 ruleset_create_vm_chain($ruleset, $chain, $options, undef, undef, $direction);
9e15114a 1824
84870b1a 1825 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction, undef, $ipversion);
9e15114a
DM		 1826
1827 # implement policy
1828 my $policy;
1829
1830 if ($direction eq 'OUT') {
1831 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1832 } else {
1833 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1834 }
1835
b47ecc88
AD		 1836 my $accept = generate_nfqueue($options);
1837 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1838 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1839
eba0fb64 1840 if ($direction eq 'OUT') {
41389aed 1841 ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", {
eba0fb64
DM		 1842 action => $chain,
1843 source => $ip,
1844 iface_in => 'venet0'});
1845 } else {
41389aed 1846 ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", {
eba0fb64
DM		 1847 action => $chain,
1848 dest => $ip,
1849 iface_out => 'venet0'});
1850 }
9e15114a
DM		 1851}
1852
1853sub generate_tap_rules_direction {
84870b1a 1854 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 1855
1856 my $lc_direction = lc($direction);
1857
1858 my $rules = $vmfw_conf->{rules};
1859
1860 my $options = $vmfw_conf->{options};
1861 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1862
1863 my $tapchain = "$iface-$direction";
1864
b692f42c
DM		 1865 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
1866 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name)
1867 if $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 1868
a34cfdd0 1869 # create chain with mac and ip filter
808d711d 1870 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $ipfilter_ipset, $direction);
9e15114a 1871
a34cfdd0 1872 if ($options->{enable}) {
84870b1a 1873 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion);
3a616aa0 1874
a34cfdd0 1875 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 1876
a34cfdd0
DM		 1877 # implement policy
1878 my $policy;
ccae0b50 1879
a34cfdd0
DM		 1880 if ($direction eq 'OUT') {
1881 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1882 } else {
72f63fde 1883 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 1884 }
ccae0b50 1885
a34cfdd0
DM		 1886 my $accept = generate_nfqueue($options);
1887 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
1888 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
1889 } else {
1890 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
1891 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, 'ACCEPT', $loglevel, $accept_action);
1892 }
3a616aa0 1893
3fa83edf 1894 # plug the tap chain to bridge chain
3cc81077 1895 if ($direction eq 'IN') {
a01c32c7
DM		 1896 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
1897 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
3cc81077 1898 } else {
a01c32c7
DM		 1899 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
1900 "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain");
3cc81077 1901 }
3a616aa0
AD		 1902}
1903
d18c1e2b 1904sub enable_host_firewall {
aedde2c2 1905 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
0bd5f137 1906
92e976b3 1907 my $options = $hostfw_conf->{options};
63324b09 1908 my $cluster_options = $cluster_conf->{options};
92e976b3 1909 my $rules = $hostfw_conf->{rules};
35f0c37e 1910 my $cluster_rules = $cluster_conf->{rules};
178a63be 1911
3fa83edf 1912 # host inbound firewall
dec84fcd
DM		 1913 my $chain = "PVEFW-HOST-IN";
1914 ruleset_create_chain($ruleset, $chain);
0bd5f137 1915
178a63be
DM		 1916 my $loglevel = get_option_log_level($options, "log_level_in");
1917
e2943485 1918 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
4ac863a6 1919
e2943485 1920 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2428e394 1921 ruleset_chain_add_input_filters($ruleset, $chain, $options, $cluster_conf, $loglevel);
fb424a00 1922
23e888f8
DM		 1923 # we use RETURN because we need to check also tap rules
1924 my $accept_action = 'RETURN';
1925
cc8dc02f
DM		 1926 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1927
35f0c37e
DM		 1928 # add host rules first, so that cluster wide rules can be overwritten
1929 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 1930 next if !$rule->{enable} || $rule->{errors};
bfc488f6 1931
f8b12fff 1932 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 1933
1a9978ed
DM		 1934 eval {
1935 if ($rule->{type} eq 'group') {
aedde2c2 1936 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 1937 } elsif ($rule->{type} eq 'in') {
bfc488f6 1938 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 1939 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 1940 }
1941 };
1942 warn $@ if $@;
f8b12fff 1943 delete $rule->{iface_in};
0bd5f137 1944 }
eb399cef
DM		 1945
1946 # allow standard traffic for management ipset (includes cluster network)
708ba714
DM		 1947 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management");
1948 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
eb399cef 1949 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API
bfc488f6 1950 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
eb399cef
DM		 1951 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
1952 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 1953
525778d7 1954 my $localnet = local_network();
3bc79f87 1955
eb399cef 1956 # corosync
525778d7 1957 if ($localnet) {
c5191f57 1958 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7
DM		 1959 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule");
1960 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87 1961 }
0bd5f137 1962
23e888f8 1963 # implement input policy
63324b09 1964 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1965 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1966
3fa83edf 1967 # host outbound firewall
aadd745e 1968 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1969 ruleset_create_chain($ruleset, $chain);
1970
178a63be
DM		 1971 $loglevel = get_option_log_level($options, "log_level_out");
1972
dec84fcd 1973 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
e2943485
DM		 1974
1975 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
1976
23e888f8
DM		 1977 # we use RETURN because we may want to check other thigs later
1978 $accept_action = 'RETURN';
1979
cc8dc02f
DM		 1980 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1981
35f0c37e
DM		 1982 # add host rules first, so that cluster wide rules can be overwritten
1983 foreach my $rule (@$rules, @$cluster_rules) {
5383df39
DM		 1984 next if !$rule->{enable} || $rule->{errors};
1985
f8b12fff 1986 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed
DM		 1987 eval {
1988 if ($rule->{type} eq 'group') {
aedde2c2 1989 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 1990 } elsif ($rule->{type} eq 'out') {
bfc488f6 1991 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 1992 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 1993 }
1994 };
1995 warn $@ if $@;
f8b12fff 1996 delete $rule->{iface_out};
0bd5f137
AD		 1997 }
1998
3bc79f87 1999 # allow standard traffic on cluster network
525778d7
DM		 2000 if ($localnet) {
2001 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API
2002 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 2003 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
525778d7 2004 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
bfc488f6 2005
c5191f57 2006 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7 2007 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule");
f573ae2c 2008 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87
DM		 2009 }
2010
23e888f8 2011 # implement output policy
63324b09 2012 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 2013 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 2014
dec84fcd
DM		 2015 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
2016 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 2017}
2018
2019sub generate_group_rules {
aedde2c2 2020 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2021
c6f5cc88 2022 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2023
b4deedab
DM		 2024 if (!$rules) {
2025 warn "no such security group '$group'\n";
2026 $rules = []; # create empty chain
2027 }
2028
3fa83edf 2029 my $chain = "GROUP-${group}-IN";
9d31b418 2030
3fa83edf 2031 ruleset_create_chain($ruleset, $chain);
b47ecc88 2032 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 2033
92e976b3
DM		 2034 foreach my $rule (@$rules) {
2035 next if $rule->{type} ne 'in';
aedde2c2 2036 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
ba791b1f 2037 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 2038 }
2039
3fa83edf 2040 $chain = "GROUP-${group}-OUT";
9d31b418 2041
3fa83edf 2042 ruleset_create_chain($ruleset, $chain);
4e6112f9 2043 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 2044
92e976b3
DM		 2045 foreach my $rule (@$rules) {
2046 next if $rule->{type} ne 'out';
aedde2c2 2047 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2048 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2049 # check also other tap rules later
cbb5d6f3 2050 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 2051 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 2052 }
9d31b418
AD		 2053}
2054
51bae274
DM		 2055my $MAX_NETS = 32;
2056my $valid_netdev_names = {};
2057for (my $i = 0; $i < $MAX_NETS; $i++) {
2058 $valid_netdev_names->{"net$i"} = 1;
2059}
5e1267a5 2060
51bae274 2061sub parse_fw_rule {
a523e057 2062 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
5e1267a5 2063
d4cda423
DM		 2064 my $orig_line = $line;
2065
6d9246e7
DM		 2066 my $rule = {};
2067
11bac5c2 2068 # we can add single line comments to the end of the rule
6d9246e7
DM		 2069 if ($line =~ s/#\s*(.*?)\s*$//) {
2070 $rule->{comment} = decode('utf8', $1);
2071 }
11bac5c2
DM		 2072
2073 # we can disable a rule when prefixed with '|'
ea9e5116 2074
6d9246e7 2075 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2076
dba740a9
DM		 2077 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2078 die "unable to parse rule: $line\n";
6d9246e7
DM		 2079
2080 $rule->{type} = lc($1);
2081 $rule->{action} = $2;
2082
2083 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2084 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2085 $rule->{macro} = $1;
2086 $rule->{action} = $2;
92e976b3 2087 }
51bae274
DM		 2088 }
2089
dba740a9
DM		 2090 while (length($line)) {
2091 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2092 $rule->{iface} = $1;
dba740a9
DM		 2093 next;
2094 }
51bae274 2095
6d9246e7 2096 last if $rule->{type} eq 'group';
51bae274 2097
dba740a9 2098 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2099 $rule->{proto} = $1;
dba740a9
DM		 2100 next;
2101 }
6d9246e7 2102
dba740a9 2103 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2104 $rule->{dport} = $1;
dba740a9
DM		 2105 next;
2106 }
6d9246e7 2107
dba740a9 2108 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2109 $rule->{sport} = $1;
dba740a9
DM		 2110 next;
2111 }
2112 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2113 $rule->{source} = $1;
dba740a9
DM		 2114 next;
2115 }
2116 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2117 $rule->{dest} = $1;
dba740a9
DM		 2118 next;
2119 }
51bae274 2120
dba740a9
DM		 2121 last;
2122 }
ba791b1f 2123
dba740a9 2124 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2125
a523e057 2126 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
d4cda423
DM		 2127 if ($verbose && $rule->{errors}) {
2128 warn "$prefix - errors in rule parameters: $orig_line\n";
2129 foreach my $p (keys %{$rule->{errors}}) {
2130 warn " $p: $rule->{errors}->{$p}\n";
2131 }
2132 }
6d9246e7
DM		 2133
2134 return $rule;
51bae274
DM		 2135}
2136
2d404ffc 2137sub parse_vmfw_option {
85c6eaed
DM		 2138 my ($line) = @_;
2139
2140 my ($opt, $value);
2141
178a63be
DM		 2142 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2143
6bafd113 2144 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2145 $opt = lc($1);
2146 $value = int($2);
178a63be
DM		 2147 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2148 $opt = lc($1);
2149 $value = $2 ? lc($3) : '';
72f63fde 2150 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2151 $opt = lc($1);
2152 $value = uc($3);
b47ecc88
AD		 2153 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2154 $opt = lc($1);
2155 $value = $2;
9c6b6efd 2156 } else {
85c6eaed
DM		 2157 die "can't parse option '$line'\n"
2158 }
2159
2160 return ($opt, $value);
2161}
2162
2d404ffc
DM		 2163sub parse_hostfw_option {
2164 my ($line) = @_;
2165
2166 my ($opt, $value);
2167
2168 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2169
c50a5a68 2170 if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2171 $opt = lc($1);
2172 $value = int($2);
178a63be 2173 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2174 $opt = lc($1);
2175 $value = $2 ? lc($3) : '';
28c082a1 2176 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 2177 $opt = lc($1);
2178 $value = int($2);
2d404ffc 2179 } else {
2d404ffc
DM		 2180 die "can't parse option '$line'\n"
2181 }
2182
2183 return ($opt, $value);
2184}
2185
c6f5cc88
DM		 2186sub parse_clusterfw_option {
2187 my ($line) = @_;
2188
2189 my ($opt, $value);
2190
2191 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
2192 $opt = lc($1);
2193 $value = int($2);
63324b09
DM		 2194 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2195 $opt = lc($1);
2196 $value = uc($3);
c6f5cc88 2197 } else {
c6f5cc88
DM		 2198 die "can't parse option '$line'\n"
2199 }
2200
2201 return ($opt, $value);
2202}
2203
6c221576
DM		 2204sub resolve_alias {
2205 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2206
6d959e3f
DM		 2207 my $alias = lc($cidr);
2208 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
2209 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2210
6d959e3f
DM		 2211 die "no such alias '$cidr'\n" if !$e;;
2212
2213 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2214}
2215
ae029a88
DM		 2216sub parse_ip_or_cidr {
2217 my ($cidr) = @_;
2218
2219 my $ipversion;
2220
2221 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2222 $cidr =~ s|/128$||;
2223 $ipversion = 6;
2224 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2225 $cidr =~ s|/32$||;
2226 $ipversion = 4;
2227 } else {
2228 die "value does not look like a valid IP address or CIDR network\n";
2229 }
2230
2231 return wantarray ? ($cidr, $ipversion) : $cidr;
2232}
2233
e76a9f53 2234sub parse_alias {
92e1209b
AD		 2235 my ($line) = @_;
2236
81d574a7
DM		 2237 # we can add single line comments to the end of the line
2238 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2239
92e1209b 2240 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2241 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2242 my $ipversion;
2243
2244 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2245
81d574a7
DM		 2246 my $data = {
2247 name => $name,
2248 cidr => $cidr,
70e524eb 2249 ipversion => $ipversion,
81d574a7
DM		 2250 };
2251 $data->{comment} = $comment if $comment;
2252 return $data;
92e1209b
AD		 2253 }
2254
81d574a7 2255 return undef;
92e1209b
AD		 2256}
2257
e5cd1ee0 2258sub generic_fw_config_parser {
1210ae94 2259 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
5e1267a5 2260
51bae274
DM		 2261 my $section;
2262 my $group;
2263
1210ae94 2264 my $res = $empty_conf;
6158271d 2265
51bae274
DM		 2266 while (defined(my $line = <$fh>)) {
2267 next if $line =~ m/^#/;
2268 next if $line =~ m/^\s*$/;
2269
c8c534f7
DM		 2270 chomp $line;
2271
961b4928
DM		 2272 my $linenr = $fh->input_line_number();
2273 my $prefix = "$filename (line $linenr)";
2274
1210ae94 2275 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2276 $section = 'options';
2277 next;
2278 }
2279
1210ae94 2280 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2281 $section = 'aliases';
2282 next;
2283 }
2284
1210ae94 2285 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2286 $section = 'groups';
92e976b3 2287 $group = lc($1);
0d22acb3 2288 my $comment = $2;
351052d1
DM		 2289 eval {
2290 die "security group name too long\n" if length($group) > $max_group_name_length;
2291 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2292 };
2293 if (my $err = $@) {
2294 ($section, $group, $comment) = undef;
2295 warn "$prefix: $err";
2296 next;
2297 }
2298
c85c87f9 2299 $res->{$section}->{$group} = [];
649e4d57
DM		 2300 $res->{group_comments}->{$group} = decode('utf8', $comment)
2301 if $comment;
51bae274
DM		 2302 next;
2303 }
34cdedfa 2304
1210ae94 2305 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2306 $section = 'rules';
2307 next;
2308 }
cbb5d6f3 2309
1210ae94 2310 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2311 $section = 'ipset';
2312 $group = lc($1);
d72c631c 2313 my $comment = $2;
351052d1
DM		 2314 eval {
2315 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2316 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2317 };
2318 if (my $err = $@) {
2319 ($section, $group, $comment) = undef;
2320 warn "$prefix: $err";
2321 next;
2322 }
2323
c85c87f9 2324 $res->{$section}->{$group} = [];
e34d0e58 2325 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2326 if $comment;
34cdedfa
AD		 2327 next;
2328 }
2329
c6f5cc88 2330 if (!$section) {
cbb5d6f3 2331 warn "$prefix: skip line - no section\n";
51bae274
DM		 2332 next;
2333 }
2334
c6f5cc88
DM		 2335 if ($section eq 'options') {
2336 eval {
1210ae94
DM		 2337 my ($opt, $value);
2338 if ($rule_env eq 'cluster') {
2339 ($opt, $value) = parse_clusterfw_option($line);
2340 } elsif ($rule_env eq 'host') {
2341 ($opt, $value) = parse_hostfw_option($line);
2342 } else {
2343 ($opt, $value) = parse_vmfw_option($line);
2344 }
c6f5cc88
DM		 2345 $res->{options}->{$opt} = $value;
2346 };
2347 warn "$prefix: $@" if $@;
92e1209b
AD		 2348 } elsif ($section eq 'aliases') {
2349 eval {
e76a9f53 2350 my $data = parse_alias($line);
81d574a7 2351 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2352 };
2353 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2354 } elsif ($section eq 'rules') {
2355 my $rule;
1210ae94 2356 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
c6f5cc88
DM		 2357 if (my $err = $@) {
2358 warn "$prefix: $err";
2359 next;
2360 }
2361 push @{$res->{$section}}, $rule;
2362 } elsif ($section eq 'groups') {
34cdedfa 2363 my $rule;
1210ae94 2364 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
34cdedfa
AD		 2365 if (my $err = $@) {
2366 warn "$prefix: $err";
2367 next;
2368 }
3f95d14a 2369 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2370 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2371 # we can add single line comments to the end of the rule
2372 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2373
30f1b100 2374 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2375 my $nomatch = $1;
9d6f90e6 2376 my $cidr = $2;
d46b1ef6
DM		 2377 my $errors;
2378
2379 if ($nomatch && !$feature_ipset_nomatch) {
2380 $errors->{nomatch} = "nomatch not supported by kernel";
2381 }
2a052ee3 2382
4803b296
DM		 2383 eval {
2384 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2385 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2386 } else {
ae029a88 2387 $cidr = parse_ip_or_cidr($cidr);
92e1209b 2388 }
4803b296
DM		 2389 };
2390 if (my $err = $@) {
c8c534f7 2391 chomp $err;
d46b1ef6 2392 $errors->{cidr} = $err;
2a052ee3 2393 }
2a052ee3 2394
e34d0e58 2395 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2396 $entry->{nomatch} = 1 if $nomatch;
2397 $entry->{comment} = $comment if $comment;
d46b1ef6 2398 $entry->{errors} = $errors if $errors;
e34d0e58 2399
c8c534f7 2400 if ($verbose && $errors) {
9a3061c7 2401 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 2402 foreach my $p (keys %{$errors}) {
2403 warn " $p: $errors->{$p}\n";
2404 }
2405 }
2406
9d6f90e6 2407 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 2408 } else {
2409 warn "$prefix: skip line - unknown section\n";
2410 next;
51bae274 2411 }
5e1267a5
DM		 2412 }
2413
2414 return $res;
2415}
2416
e5cd1ee0 2417sub parse_hostfw_config {
1210ae94
DM		 2418 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2419
2420 my $empty_conf = { rules => [], options => {}};
2421
e5cd1ee0 2422 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
1210ae94
DM		 2423}
2424
e5cd1ee0 2425sub parse_vmfw_config {
1210ae94
DM		 2426 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2427
2428 my $empty_conf = {
2429 rules => [],
2430 options => {},
2431 aliases => {},
2432 ipset => {} ,
2433 ipset_comments => {},
2434 };
2435
e5cd1ee0 2436 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
1210ae94
DM		 2437}
2438
e5cd1ee0 2439sub parse_clusterfw_config {
1210ae94
DM		 2440 my ($filename, $fh, $verbose) = @_;
2441
2442 my $section;
2443 my $group;
2444
2445 my $empty_conf = {
2446 rules => [],
2447 options => {},
2448 aliases => {},
2449 groups => {},
2450 group_comments => {},
2451 ipset => {} ,
2452 ipset_comments => {},
2453 };
2454
e5cd1ee0 2455 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
1210ae94
DM		 2456}
2457
06320eb0
DM		 2458sub run_locked {
2459 my ($code, @param) = @_;
2460
2461 my $timeout = 10;
2462
2463 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2464
2465 die $@ if $@;
2466
2467 return $res;
2468}
2469
5e1267a5
DM		 2470sub read_local_vm_config {
2471
2472 my $openvz = {};
5e1267a5
DM		 2473 my $qemu = {};
2474
c8301d63 2475 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2476
c8301d63
DM		 2477 my $vmlist = PVE::Cluster::get_vmlist();
2478 return $vmdata if !$vmlist || !$vmlist->{ids};
2479 my $ids = $vmlist->{ids};
2480
2481 foreach my $vmid (keys %$ids) {
2482 next if !$vmid; # skip VE0
2483 my $d = $ids->{$vmid};
2484 next if !$d->{node} || $d->{node} ne $nodename;
2485 next if !$d->{type};
2486 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2487 if ($have_pve_manager) {
2488 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2489 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2490 $openvz->{$vmid} = $conf;
2491 }
c8301d63
DM		 2492 }
2493 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2494 if ($have_qemu_server) {
2495 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2496 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2497 $qemu->{$vmid} = $conf;
2498 }
c8301d63 2499 }
5e1267a5
DM		 2500 }
2501 }
d9fee004 2502
5e1267a5
DM		 2503 return $vmdata;
2504};
2505
e7b35711 2506sub load_vmfw_conf {
a523e057 2507 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
e7b35711
DM		 2508
2509 my $vmfw_conf = {};
2510
21053409 2511 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177
DM		 2512
2513 my $filename = "$dir/$vmid.fw";
e7b35711 2514 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2515 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
708ba714 2516 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 2517 }
2518
2519 return $vmfw_conf;
2520}
2521
464f933e 2522my $format_rules = sub {
dba740a9 2523 my ($rules, $allow_iface) = @_;
464f933e
DM		 2524
2525 my $raw = '';
2526
2527 foreach my $rule (@$rules) {
c14dacdf 2528 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2529 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2530 $raw .= uc($rule->{type});
7ca36671
DM		 2531 if ($rule->{macro}) {
2532 $raw .= " $rule->{macro}($rule->{action})";
2533 } else {
2534 $raw .= " " . $rule->{action};
2535 }
dba740a9
DM		 2536 if ($allow_iface && $rule->{iface}) {
2537 $raw .= " -i $rule->{iface}";
2538 }
c14dacdf
DM		 2539
2540 if ($rule->{type} ne 'group') {
dba740a9
DM		 2541 $raw .= " -source $rule->{source}" if $rule->{source};
2542 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2543 $raw .= " -p $rule->{proto}" if $rule->{proto};
2544 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2545 $raw .= " -sport $rule->{sport}" if $rule->{sport};
c14dacdf
DM		 2546 }
2547
cbb5d6f3 2548 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2549 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2550 $raw .= "\n";
2551 } else {
c14dacdf 2552 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2553 }
2554 }
2555
2556 return $raw;
2557};
2558
2559my $format_options = sub {
68c90e21
DM		 2560 my ($options) = @_;
2561
2562 my $raw = '';
464f933e
DM		 2563
2564 $raw .= "[OPTIONS]\n\n";
2565 foreach my $opt (keys %$options) {
2566 $raw .= "$opt: $options->{$opt}\n";
2567 }
2568 $raw .= "\n";
68c90e21
DM		 2569
2570 return $raw;
464f933e
DM		 2571};
2572
0d5f0a0f
DM		 2573my $format_aliases = sub {
2574 my ($aliases) = @_;
2575
2576 my $raw = '';
2577
2578 $raw .= "[ALIASES]\n\n";
2579 foreach my $k (keys %$aliases) {
81d574a7
DM		 2580 my $e = $aliases->{$k};
2581 $raw .= "$e->{name} $e->{cidr}";
2582 $raw .= " # " . encode('utf8', $e->{comment})
2583 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2584 $raw .= "\n";
0d5f0a0f
DM		 2585 }
2586 $raw .= "\n";
2587
2588 return $raw;
2589};
2590
1210ae94
DM		 2591my $format_ipsets = sub {
2592 my ($fw_conf) = @_;
2593
9d6f90e6
DM		 2594 my $raw = '';
2595
1210ae94
DM		 2596 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
2597 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
2598 my $utf8comment = encode('utf8', $comment);
2599 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2600 } else {
2601 $raw .= "[IPSET $ipset]\n\n";
2602 }
2603 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 2604
1210ae94
DM		 2605 my $nethash = {};
2606 foreach my $entry (@$options) {
2607 $nethash->{$entry->{cidr}} = $entry;
2608 }
2609
2610 foreach my $cidr (sort keys %$nethash) {
2611 my $entry = $nethash->{$cidr};
2612 my $line = $entry->{nomatch} ? '!' : '';
2613 $line .= $entry->{cidr};
2614 $line .= " # " . encode('utf8', $entry->{comment})
2615 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2616 $raw .= "$line\n";
2617 }
2618
2619 $raw .= "\n";
9d6f90e6 2620 }
e34d0e58 2621
9d6f90e6
DM		 2622 return $raw;
2623};
2624
464f933e
DM		 2625sub save_vmfw_conf {
2626 my ($vmid, $vmfw_conf) = @_;
2627
2628 my $raw = '';
2629
2630 my $options = $vmfw_conf->{options};
89ea63c8 2631 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 2632
e76a9f53 2633 my $aliases = $vmfw_conf->{aliases};
89ea63c8 2634 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 2635
89ea63c8 2636 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 2637
8824b2f0 2638 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 2639 if ($rules && scalar(@$rules)) {
464f933e
DM		 2640 $raw .= "[RULES]\n\n";
2641 $raw .= &$format_rules($rules, 1);
2642 $raw .= "\n";
2643 }
2644
21053409
DM		 2645 mkdir $pvefw_conf_dir;
2646
2647 my $filename = "$pvefw_conf_dir/$vmid.fw";
464f933e
DM		 2648 PVE::Tools::file_set_contents($filename, $raw);
2649}
2650
6fc63ffd 2651sub read_vm_firewall_configs {
a523e057 2652 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
8aef5177 2653
6fc63ffd 2654 my $vmfw_configs = {};
c8301d63 2655
b6b8e6ad 2656 foreach my $vmid (keys %{$vmdata->{qemu}}) {
a523e057 2657 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
b6b8e6ad
DM		 2658 next if !$vmfw_conf->{options}; # skip if file does not exists
2659 $vmfw_configs->{$vmid} = $vmfw_conf;
2660 }
2661 foreach my $vmid (keys %{$vmdata->{openvz}}) {
a523e057 2662 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
e7b35711
DM		 2663 next if !$vmfw_conf->{options}; # skip if file does not exists
2664 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2665 }
2666
6fc63ffd 2667 return $vmfw_configs;
5e1267a5
DM		 2668}
2669
2d404ffc
DM		 2670sub get_option_log_level {
2671 my ($options, $k) = @_;
2672
2673 my $v = $options->{$k};
178a63be 2674 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2675
2676 return undef if $v eq '' || $v eq 'nolog';
2677
2678 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2679
2680 return $v if ($v >= 0) && ($v <= 7);
2681
2682 warn "unknown log level ($k = '$v')\n";
2683
2684 return undef;
2685}
2686
d8f2505e 2687sub generate_std_chains {
db8a955f
DM		 2688 my ($ruleset, $options, $ipversion) = @_;
2689
2690 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 2691
2d404ffc
DM		 2692 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2693
db8a955f 2694 my $chain;
782c4cde 2695
db8a955f
DM		 2696 if ($ipversion == 4) {
2697 # same as shorewall smurflog.
2698 $chain = 'PVEFW-smurflog';
2699 $std_chains->{$chain} = [];
2700
2701 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2702 push @{$std_chains->{$chain}}, "-j DROP";
2703 }
2d404ffc
DM		 2704
2705 # same as shorewall logflags action.
2706 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2707 $chain = 'PVEFW-logflags';
db8a955f 2708 $std_chains->{$chain} = [];
12f3796e 2709
782c4cde 2710 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
db8a955f
DM		 2711 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2712 push @{$std_chains->{$chain}}, "-j DROP";
d8f2505e 2713
db8a955f 2714 foreach my $chain (keys %$std_chains) {
d8f2505e 2715 ruleset_create_chain($ruleset, $chain);
db8a955f 2716 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e
DM		 2717 if (ref($rule)) {
2718 ruleset_generate_rule($ruleset, $chain, $rule);
2719 } else {
2720 ruleset_addrule($ruleset, $chain, $rule);
2721 }
2722 }
2723 }
2724}
2725
34cdedfa 2726sub generate_ipset_chains {
708ba714 2727 my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_;
34cdedfa 2728
dd7a13fd 2729 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
708ba714
DM		 2730 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $ipset);
2731 generate_ipset($ipset_ruleset, $ipset_chain, $fw_conf->{ipset}->{$ipset}, $clusterfw_conf, $fw_conf);
34cdedfa
AD		 2732 }
2733}
2734
2735sub generate_ipset {
708ba714
DM		 2736 my ($ipset_ruleset, $name, $options, $clusterfw_conf, $fw_conf) = @_;
2737
2738 die "duplicate ipset chain '$name'\n" if defined($ipset_ruleset->{$name});
34cdedfa 2739
6d959e3f 2740 $ipset_ruleset->{$name} = ["create $name list:set size 4"];
34cdedfa 2741
30f1b100
DM		 2742 # remove duplicates
2743 my $nethash = {};
9d6f90e6 2744 foreach my $entry (@$options) {
c8c534f7 2745 next if $entry->{errors}; # skip entries with errors
6c221576 2746 eval {
6d959e3f
DM		 2747 my ($cidr, $ipversion);
2748 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
2749 ($cidr, $ipversion) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
2750 } else {
2751 ($cidr, $ipversion) = parse_ip_or_cidr($entry->{cidr});
2752 }
2753 #http://backreference.org/2013/03/01/ipv6-address-normalization/
2754 if ($ipversion == 6) {
2755 my $ipv6 = inet_pton(AF_INET6, lc($cidr));
2756 $cidr = inet_ntop(AF_INET6, $ipv6);
2757 $cidr =~ s|/128$||;
2758 } else {
2759 $cidr =~ s|/32$||;
2760 }
2761
2762 $nethash->{$ipversion}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
6c221576
DM		 2763 };
2764 warn $@ if $@;
30f1b100
DM		 2765 }
2766
6d959e3f
DM		 2767 foreach my $ipversion (sort keys %$nethash) {
2768 my $data = $nethash->{$ipversion};
2769 my $subname = "$name-v$ipversion";
2770
2771 my $hashsize = scalar(@$options);
2772 if ($hashsize <= 64) {
2773 $hashsize = 64;
2774 } else {
2775 $hashsize = round_powerof2($hashsize);
2776 }
2777
2778 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 2779
6d959e3f
DM		 2780 $ipset_ruleset->{$subname} = ["create $subname hash:net family $family hashsize $hashsize maxelem $hashsize"];
2781
2782 foreach my $cidr (sort keys %$data) {
2783 my $entry = $data->{$cidr};
2784
2785 my $cmd = "add $subname $cidr";
2786 if ($entry->{nomatch}) {
2787 if ($feature_ipset_nomatch) {
2788 push @{$ipset_ruleset->{$subname}}, "$cmd nomatch";
2789 } else {
2790 warn "ignore !$cidr - nomatch not supported by kernel\n";
2791 }
9d6f90e6 2792 } else {
6d959e3f 2793 push @{$ipset_ruleset->{$subname}}, $cmd;
9d6f90e6 2794 }
9d6f90e6 2795 }
6d959e3f
DM		 2796
2797 push @{$ipset_ruleset->{$name}}, "add $name $subname";
34cdedfa 2798 }
2a052ee3
AD		 2799}
2800
2801sub round_powerof2 {
dd7a13fd 2802 my ($int) = @_;
2a052ee3 2803
dd7a13fd
DM		 2804 $int--;
2805 $int |= $int >> $_ foreach (1,2,4,8,16);
2806 return ++$int;
34cdedfa
AD		 2807}
2808
fca39c2c 2809sub load_clusterfw_conf {
d4cda423 2810 my ($filename, $verbose) = @_;
8aef5177
DM		 2811
2812 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 2813
fca39c2c 2814 my $cluster_conf = {};
8aef5177 2815 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2816 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
51bae274 2817 }
5e1267a5 2818
fca39c2c 2819 return $cluster_conf;
e5d76bde
DM		 2820}
2821
fca39c2c
DM		 2822sub save_clusterfw_conf {
2823 my ($cluster_conf) = @_;
9c7e0858
DM		 2824
2825 my $raw = '';
9c7e0858 2826
c6f5cc88 2827 my $options = $cluster_conf->{options};
89ea63c8 2828 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 2829
0d5f0a0f 2830 my $aliases = $cluster_conf->{aliases};
89ea63c8 2831 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 2832
89ea63c8 2833 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
1210ae94 2834
c6f5cc88 2835 my $rules = $cluster_conf->{rules};
89ea63c8 2836 if ($rules && scalar(@$rules)) {
c6f5cc88 2837 $raw .= "[RULES]\n\n";
63c91681 2838 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2839 $raw .= "\n";
2840 }
2841
89ea63c8
DM		 2842 if ($cluster_conf->{groups}) {
2843 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2844 my $rules = $cluster_conf->{groups}->{$group};
2845 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
2846 my $utf8comment = encode('utf8', $comment);
2847 $raw .= "[group $group] # $utf8comment\n\n";
2848 } else {
2849 $raw .= "[group $group]\n\n";
2850 }
0d22acb3 2851
89ea63c8
DM		 2852 $raw .= &$format_rules($rules, 0);
2853 $raw .= "\n";
2854 }
9c7e0858
DM		 2855 }
2856
21053409 2857 mkdir $pvefw_conf_dir;
fca39c2c 2858 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2859}
2860
8b27beb9 2861sub load_hostfw_conf {
a523e057 2862 my ($cluster_conf, $filename, $verbose) = @_;
8aef5177
DM		 2863
2864 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 2865
2866 my $hostfw_conf = {};
8aef5177 2867 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2868 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
8b27beb9
DM		 2869 }
2870 return $hostfw_conf;
2871}
2872
63c91681
DM		 2873sub save_hostfw_conf {
2874 my ($hostfw_conf) = @_;
2875
2876 my $raw = '';
2877
2878 my $options = $hostfw_conf->{options};
89ea63c8 2879 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 2880
63c91681 2881 my $rules = $hostfw_conf->{rules};
89ea63c8 2882 if ($rules && scalar(@$rules)) {
63c91681
DM		 2883 $raw .= "[RULES]\n\n";
2884 $raw .= &$format_rules($rules, 1);
2885 $raw .= "\n";
2886 }
2887
2888 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2889}
2890
e5d76bde 2891sub compile {
d4cda423 2892 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3dfa8a7f 2893
8aef5177
DM		 2894 my $vmfw_configs;
2895
2896 if ($vmdata) { # test mode
2897 my $testdir = $vmdata->{testdir} || die "no test directory specified";
2898 my $filename = "$testdir/cluster.fw";
d4cda423 2899 $cluster_conf = load_clusterfw_conf($filename, $verbose);
8aef5177
DM		 2900
2901 $filename = "$testdir/host.fw";
a523e057 2902 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
8aef5177 2903
a523e057 2904 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
8aef5177 2905 } else { # normal operation
d4cda423 2906 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
8aef5177 2907
a523e057 2908 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
8aef5177
DM		 2909
2910 $vmdata = read_local_vm_config();
a523e057 2911 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
8aef5177 2912 }
3dfa8a7f 2913
9268573a
AD		 2914 my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
2915 return ($ruleset, $ipset_ruleset);
2916}
2917
2918sub compile_iptables_filter {
2919 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
2920
27083984 2921 $cluster_conf->{ipset}->{venet0} = [];
708ba714 2922 my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0');
bfc488f6 2923
525778d7
DM		 2924 my $localnet;
2925 if ($cluster_conf->{aliases}->{local_network}) {
2926 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2927 } else {
2928 $localnet = local_network() || '127.0.0.0/8';
2929 $cluster_conf->{aliases}->{local_network} = { cidr => $localnet };
2930 }
2931
2932 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 2933
085fd492
DM		 2934 return ({}, {}) if !$cluster_conf->{options}->{enable};
2935
3fa83edf
DM		 2936 my $ruleset = {};
2937
dec84fcd
DM		 2938 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2939 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2940
fadb13dd 2941 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 2942
8b27beb9 2943 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2944
88733a74
AD		 2945 # fixme: what log level should we use here?
2946 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2947
097820b0 2948 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 2949
708ba714 2950
e2943485 2951 ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
708ba714
DM		 2952 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
2953 ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
e2943485
DM		 2954
2955 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
2428e394 2956 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2957
d1b41c08 2958 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
e2943485
DM		 2959
2960 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
d1b41c08 2961 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
e2943485
DM		 2962
2963 ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
2428e394 2964 ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2965
708ba714 2966 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
e2943485 2967
db8a955f 2968 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 2969
6d2ab017 2970 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2971
708ba714
DM		 2972 my $ipset_ruleset = {};
2973
b546f500
DM		 2974 # currently pveproxy don't works with ipv6, so let's generate host fw ipv4 only for the moment
2975 if ($hostfw_enable && ($ipversion == 4)) {
aedde2c2 2976 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
1a9978ed
DM		 2977 warn $@ if $@; # just to be sure - should not happen
2978 }
3fa83edf 2979
708ba714 2980 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
62689a1e 2981
6158271d 2982 # generate firewall rules for QEMU VMs
3fa83edf 2983 foreach my $vmid (keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 2984 eval {
2985 my $conf = $vmdata->{qemu}->{$vmid};
2986 my $vmfw_conf = $vmfw_configs->{$vmid};
2987 return if !$vmfw_conf;
1a9978ed 2988
708ba714
DM		 2989 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
2990
1a9978ed
DM		 2991 foreach my $netid (keys %$conf) {
2992 next if $netid !~ m/^net(\d+)$/;
2993 my $net = PVE::QemuServer::parse_net($conf->{$netid});
2994 next if !$net->{firewall};
2995 my $iface = "tap${vmid}i$1";
2996
2997 my $macaddr = $net->{macaddr};
2998 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 2999 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3000 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3001 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3002 }
3003 };
3004 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3005 }
c8301d63
DM		 3006
3007 # generate firewall rules for OpenVZ containers
3008 foreach my $vmid (keys %{$vmdata->{openvz}}) {
1a9978ed
DM		 3009 eval {
3010 my $conf = $vmdata->{openvz}->{$vmid};
c8301d63 3011
1a9978ed
DM		 3012 my $vmfw_conf = $vmfw_configs->{$vmid};
3013 return if !$vmfw_conf;
c8301d63 3014
708ba714
DM		 3015 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3016
a34cfdd0
DM		 3017 if ($vmfw_conf->{options}->{enable}) {
3018 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
3019 my $ip = $conf->{ip_address}->{value};
3020 $ip =~ s/\s+/,/g;
27083984 3021
b33ce1b5 3022 my @ips = ();
27083984 3023
b33ce1b5
DM		 3024 foreach my $singleip (split(',', $ip)) {
3025 my $singleip_ver = parse_address_list($singleip); # make sure we have a valid $ip list
3026 push @{$cluster_conf->{ipset}->{venet0}}, { cidr => $singleip };
3027 push @ips, $singleip if $singleip_ver == $ipversion;
a34cfdd0 3028 }
c8301d63 3029
b33ce1b5
DM		 3030 if (scalar(@ips)) {
3031 my $ip_list = join(',', @ips);
3032 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip_list, 'IN', $ipversion);
3033 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip_list, 'OUT', $ipversion);
3034 }
a34cfdd0 3035 }
1a9978ed 3036 }
530c005e 3037
1a9978ed
DM		 3038 if ($conf->{netif} && $conf->{netif}->{value}) {
3039 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
3040 foreach my $netid (keys %$netif) {
3041 my $d = $netif->{$netid};
a34cfdd0
DM		 3042 my $bridge = $d->{bridge};
3043 next if !$bridge || $bridge !~ m/^vmbr\d+(v(\d+))?f$/; # firewall enabled ?
1a9978ed
DM		 3044 my $macaddr = $d->{mac};
3045 my $iface = $d->{host_ifname};
3046 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3047 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3048 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3049 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed 3050 }
c8301d63 3051 }
1a9978ed
DM		 3052 };
3053 warn $@ if $@; # just to be sure - should not happen
c8301d63 3054 }
c0413e35 3055
097820b0
AD		 3056 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
3057 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
3058 }
3059
708ba714 3060 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
27083984 3061
3dfa8a7f 3062 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 3063}
3064
3065sub get_ruleset_status {
4bd0a9c4 3066 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 3067
3068 my $statushash = {};
3069
3070 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 3071 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 3072
3fa83edf
DM		 3073 $statushash->{$chain}->{sig} = $sig;
3074
3075 my $oldsig = $active_chains->{$chain};
3076 if (!defined($oldsig)) {
3077 $statushash->{$chain}->{action} = 'create';
3078 } else {
3079 if ($oldsig eq $sig) {
3080 $statushash->{$chain}->{action} = 'exists';
3081 } else {
3082 $statushash->{$chain}->{action} = 'update';
3083 }
3084 }
3085 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
3086 foreach my $cmd (@{$ruleset->{$chain}}) {
3087 print "\t$cmd\n" if $verbose;
3088 }
3089 }
3090
3091 foreach my $chain (sort keys %$active_chains) {
3092 if (!defined($ruleset->{$chain})) {
3093 my $sig = $active_chains->{$chain};
3094 $statushash->{$chain}->{action} = 'delete';
3095 $statushash->{$chain}->{sig} = $sig;
3096 print "delete $chain ($sig)\n" if $verbose;
3097 }
6158271d 3098 }
2a052ee3 3099
3fa83edf
DM		 3100 return $statushash;
3101}
3102
3fa83edf
DM		 3103sub print_sig_rule {
3104 my ($chain, $sig) = @_;
3105
09d5f68e
DM		 3106 # We just use this to store a SHA1 checksum used to detect changes
3107 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 3108}
3109
df7cb349 3110sub get_ruleset_cmdlist {
a84f4d96 3111 my ($ruleset, $verbose) = @_;
3fa83edf 3112
3fa83edf 3113 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 3114
4bd0a9c4
DM		 3115 my ($active_chains, $hooks) = iptables_get_chains();
3116 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 3117
3118 # create missing chains first
3119 foreach my $chain (sort keys %$ruleset) {
3120 my $stat = $statushash->{$chain};
3121 die "internal error" if !$stat;
3122 next if $stat->{action} ne 'create';
886aba9c 3123
3fa83edf
DM		 3124 $cmdlist .= ":$chain - [0:0]\n";
3125 }
3126
4bd0a9c4 3127 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
55fad3b7
DM		 3128 my $chain = "PVEFW-$h";
3129 if ($ruleset->{$chain} && !$hooks->{$h}) {
3130 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 3131 }
3fa83edf
DM		 3132 }
3133
3134 foreach my $chain (sort keys %$ruleset) {
3135 my $stat = $statushash->{$chain};
3136 die "internal error" if !$stat;
3137
3138 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
3139 $cmdlist .= "-F $chain\n";
3140 foreach my $cmd (@{$ruleset->{$chain}}) {
3141 $cmdlist .= "$cmd\n";
3142 }
3143 $cmdlist .= print_sig_rule($chain, $stat->{sig});
3144 } elsif ($stat->{action} eq 'delete') {
f5d28682 3145 die "internal error"; # this should not happen
3fa83edf
DM		 3146 } elsif ($stat->{action} eq 'exists') {
3147 # do nothing
3148 } else {
3149 die "internal error - unknown status '$stat->{action}'";
3150 }
3151 }
3152
f5d28682
DM		 3153 foreach my $chain (keys %$statushash) {
3154 next if $statushash->{$chain}->{action} ne 'delete';
3155 $cmdlist .= "-F $chain\n";
3156 }
3157 foreach my $chain (keys %$statushash) {
3158 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 3159 next if $chain eq 'PVEFW-INPUT';
3160 next if $chain eq 'PVEFW-OUTPUT';
3161 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 3162 $cmdlist .= "-X $chain\n";
3163 }
3164
3f95d14a 3165 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 3166
3fa83edf
DM		 3167 $cmdlist .= "COMMIT\n";
3168
3f95d14a 3169 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 3170}
3171
34cdedfa 3172sub get_ipset_cmdlist {
dd7a13fd 3173 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 3174
3175 my $cmdlist = "";
3176
dd7a13fd
DM		 3177 my $delete_cmdlist = "";
3178
4bd0a9c4
DM		 3179 my $active_chains = ipset_get_chains();
3180 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 3181
e34d0e58 3182 # remove stale _swap chains
30f1b100
DM		 3183 foreach my $chain (keys %$active_chains) {
3184 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3185 $cmdlist .= "destroy $chain\n";
3186 }
3187 }
3188
dd7a13fd
DM		 3189 foreach my $chain (sort keys %$ruleset) {
3190 my $stat = $statushash->{$chain};
3191 die "internal error" if !$stat;
2a052ee3 3192
dd7a13fd
DM		 3193 if ($stat->{action} eq 'create') {
3194 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 3195 $cmdlist .= "$cmd\n";
3196 }
dd7a13fd 3197 }
6d959e3f
DM		 3198 }
3199
3200 foreach my $chain (sort keys %$ruleset) {
3201 my $stat = $statushash->{$chain};
3202 die "internal error" if !$stat;
34cdedfa 3203
dd7a13fd
DM		 3204 if ($stat->{action} eq 'update') {
3205 my $chain_swap = $chain."_swap";
cbb5d6f3 3206
dd7a13fd
DM		 3207 foreach my $cmd (@{$ruleset->{$chain}}) {
3208 $cmd =~ s/$chain/$chain_swap/;
3209 $cmdlist .= "$cmd\n";
34cdedfa 3210 }
dd7a13fd
DM		 3211 $cmdlist .= "swap $chain_swap $chain\n";
3212 $cmdlist .= "flush $chain_swap\n";
3213 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 3214 }
dd7a13fd 3215 }
3f95d14a 3216
6d959e3f 3217 foreach my $chain (sort keys %$statushash) {
dd7a13fd 3218 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 3219
dd7a13fd
DM		 3220 $delete_cmdlist .= "flush $chain\n";
3221 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 3222 }
3223
dd7a13fd 3224 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 3225
dd7a13fd 3226 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 3227}
3228
6b9f68a2 3229sub apply_ruleset {
34cdedfa 3230 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 3231
3232 enable_bridge_firewall();
3233
cbb5d6f3 3234 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 3235 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 3236
81a0bf43 3237 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 3238
81a0bf43
DM		 3239 if ($verbose) {
3240 if ($ipset_changes) {
3241 print "ipset changes:\n";
3242 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3243 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3244 }
3f95d14a 3245
81a0bf43
DM		 3246 if ($changes) {
3247 print "iptables changes:\n";
3248 print $cmdlist;
3249 }
3250 }
3fa83edf 3251
2a052ee3 3252 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 3253
3fa83edf
DM		 3254 iptables_restore_cmdlist($cmdlist);
3255
dd7a13fd 3256 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 3257
6158271d 3258 # test: re-read status and check if everything is up to date
4bd0a9c4 3259 my $active_chains = iptables_get_chains();
81a0bf43 3260 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 3261
3262 my $errors;
3263 foreach my $chain (sort keys %$ruleset) {
3264 my $stat = $statushash->{$chain};
3265 if ($stat->{action} ne 'exists') {
3266 warn "unable to update chain '$chain'\n";
3267 $errors = 1;
3268 }
3269 }
b6360c3f 3270
3fa83edf 3271 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 3272
3273 update_nf_conntrack_max($hostfw_conf);
3274
3275 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
3276
b6360c3f
DM		 3277}
3278
490cdead
DM		 3279sub update_nf_conntrack_max {
3280 my ($hostfw_conf) = @_;
3281
3282 my $max = 65536; # reasonable default
3283
3284 my $options = $hostfw_conf->{options} || {};
3285
3286 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
3287 $max = $options->{nf_conntrack_max};
3288 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3289 }
3290
3291 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3292 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3293
3294 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
3295
3296 if ($current != $max) {
3297 my $hashsize = int($max/4);
3298 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
3299 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
3300 }
3301}
3302
28c082a1
AD		 3303sub update_nf_conntrack_tcp_timeout_established {
3304 my ($hostfw_conf) = @_;
3305
3306 my $options = $hostfw_conf->{options} || {};
3307
3308 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
3309
3310 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3311}
3312
c4a2e5ae
DM		 3313sub remove_pvefw_chains {
3314
3315 my ($chash, $hooks) = iptables_get_chains();
3316 my $cmdlist = "*filter\n";
3317
3318 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3319 if ($hooks->{$h}) {
3320 $cmdlist .= "-D $h -j PVEFW-$h\n";
3321 }
3322 }
cbb5d6f3 3323
c4a2e5ae
DM		 3324 foreach my $chain (keys %$chash) {
3325 $cmdlist .= "-F $chain\n";
3326 }
3327
3328 foreach my $chain (keys %$chash) {
3329 $cmdlist .= "-X $chain\n";
3330 }
3331 $cmdlist .= "COMMIT\n";
3332
3333 iptables_restore_cmdlist($cmdlist);
55fad3b7
DM		 3334
3335 my $ipset_chains = ipset_get_chains();
3336
3337 $cmdlist = "";
3338
3339 foreach my $chain (keys %$ipset_chains) {
3340 $cmdlist .= "flush $chain\n";
3341 $cmdlist .= "destroy $chain\n";
3342 }
3343
3344 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 3345}
3346
8b453a09
DM		 3347sub init {
3348 my $cluster_conf = load_clusterfw_conf();
3349 my $cluster_options = $cluster_conf->{options};
3350 my $enable = $cluster_options->{enable};
3351
3352 return if !$enable;
3353
3354 # load required modules here
3355}
3356
6b9f68a2 3357sub update {
6b9f68a2 3358 my $code = sub {
3dfa8a7f
DM		 3359
3360 my $cluster_conf = load_clusterfw_conf();
3361 my $cluster_options = $cluster_conf->{options};
3362
55fad3b7 3363 if (!$cluster_options->{enable}) {
b22130d3 3364 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 3365 return;
3366 }
3367
3368 my $hostfw_conf = load_hostfw_conf();
3369
3370 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 3371
d4cda423 3372 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset);
6b9f68a2
DM		 3373 };
3374
3375 run_locked($code);
3376}
3377
b6360c3f 33781;
Firewall test scripts