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add DHCPv6 macro
[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
259db1e6
DM		 40my $pve_fw_status_dir = "/var/lib/pve-firewall";
41
42mkdir $pve_fw_status_dir; # make sure this exists
43
351052d1
DM		 44my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
45my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
f9792937 46our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
351052d1
DM		 47
48my $max_alias_name_length = 64;
49my $max_ipset_name_length = 64;
50my $max_group_name_length = 20;
51
ae029a88
DM		 52PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr);
53sub pve_verify_ip_or_cidr {
009ee3ac
DM		 54 my ($cidr, $noerr) = @_;
55
70e524eb 56 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
e34d0e58 57 return $cidr if Net::IP->new($cidr);
7c619bbb
DM		 58 return undef if $noerr;
59 die Net::IP::Error() . "\n";
60 }
61 return undef if $noerr;
62 die "value does not look like a valid IP address or CIDR network\n";
63}
64
ae029a88
DM		 65PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias);
66sub pve_verify_ip_or_cidr_or_alias {
7c619bbb
DM		 67 my ($cidr, $noerr) = @_;
68
69 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
70
ae029a88 71 return pve_verify_ip_or_cidr($cidr, $noerr);
009ee3ac
DM		 72}
73
e74a87f5
DM		 74PVE::JSONSchema::register_standard_option('ipset-name', {
75 description => "IP set name.",
76 type => 'string',
351052d1 77 pattern => $ipset_name_pattern,
387d0ffc 78 minLength => 2,
351052d1 79 maxLength => $max_ipset_name_length,
387d0ffc
DM		 80});
81
81d574a7
DM		 82PVE::JSONSchema::register_standard_option('pve-fw-alias', {
83 description => "Alias name.",
84 type => 'string',
351052d1 85 pattern => $ip_alias_pattern,
81d574a7 86 minLength => 2,
351052d1 87 maxLength => $max_alias_name_length,
81d574a7
DM		 88});
89
6302c41f
DM		 90PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
91 description => "Log level.",
e34d0e58 92 type => 'string',
6302c41f
DM		 93 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
94 optional => 1,
95});
96
387d0ffc
DM		 97PVE::JSONSchema::register_standard_option('pve-security-group-name', {
98 description => "Security Group name.",
99 type => 'string',
44be8ceb 100 pattern => $security_group_name_pattern,
387d0ffc 101 minLength => 2,
351052d1 102 maxLength => $max_group_name_length,
e74a87f5 103});
009ee3ac 104
cbb5d6f3
DM		 105my $feature_ipset_nomatch = 0;
106eval {
107 my (undef, undef, $release) = POSIX::uname();
108 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
109 my ($major, $minor) = ($1, $2);
110 $feature_ipset_nomatch = 1 if ($major > 3) ||
111 ($major == 3 && $minor >= 7);
112 }
113
114};
115
5e1267a5 116use Data::Dumper;
b6360c3f 117
c8301d63
DM		 118my $nodename = PVE::INotify::nodename();
119
06320eb0
DM		 120my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
121
56f313f7 122my $default_log_level = 'nolog'; # avoid logs by default
2d404ffc
DM		 123
124my $log_level_hash = {
125 debug => 7,
126 info => 6,
127 notice => 5,
128 warning => 4,
129 err => 3,
130 crit => 2,
131 alert => 1,
132 emerg => 0,
133};
134
b828ae3d
DM		 135# we need to overwrite some macros for ipv6
136my $pve_ipv6fw_macros = {
137 'Ping' => [
138 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
139 ],
bfd21981
WB		 140 'NeighborDiscovery' => [
141 "IPv6 neighbor solicitation, neighbor and router advertisement",
142 { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' },
143 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' },
144 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' },
145 ],
1cd80a29
WB		 146 'DHCPv6' => [
147 { action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' },
148 ],
b828ae3d
DM		 149 'Trcrt' => [
150 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
151 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
152 ],
153 };
154
857f62c8 155# imported/converted from: /usr/share/shorewall/macro.*
961b4928 156my $pve_fw_macros = {
857f62c8 157 'Amanda' => [
ebd54ae9 158 "Amanda Backup",
857f62c8
DM		 159 { action => 'PARAM', proto => 'udp', dport => '10080' },
160 { action => 'PARAM', proto => 'tcp', dport => '10080' },
161 ],
162 'Auth' => [
ebd54ae9 163 "Auth (identd) traffic",
857f62c8
DM		 164 { action => 'PARAM', proto => 'tcp', dport => '113' },
165 ],
166 'BGP' => [
ebd54ae9 167 "Border Gateway Protocol traffic",
857f62c8
DM		 168 { action => 'PARAM', proto => 'tcp', dport => '179' },
169 ],
170 'BitTorrent' => [
ebd54ae9 171 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 172 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 173 { action => 'PARAM', proto => 'udp', dport => '6881' },
174 ],
175 'BitTorrent32' => [
ebd54ae9 176 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 177 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
178 { action => 'PARAM', proto => 'udp', dport => '6881' },
179 ],
180 'CVS' => [
ebd54ae9 181 "Concurrent Versions System pserver traffic",
857f62c8
DM		 182 { action => 'PARAM', proto => 'tcp', dport => '2401' },
183 ],
184 'Citrix' => [
ebd54ae9 185 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 186 { action => 'PARAM', proto => 'tcp', dport => '1494' },
187 { action => 'PARAM', proto => 'udp', dport => '1604' },
188 { action => 'PARAM', proto => 'tcp', dport => '2598' },
189 ],
190 'DAAP' => [
ebd54ae9 191 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 192 { action => 'PARAM', proto => 'tcp', dport => '3689' },
193 { action => 'PARAM', proto => 'udp', dport => '3689' },
194 ],
195 'DCC' => [
ebd54ae9 196 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 197 { action => 'PARAM', proto => 'tcp', dport => '6277' },
198 ],
199 'DHCPfwd' => [
d2c3266d 200 "Forwarded DHCP traffic",
857f62c8 201 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 202 ],
203 'DNS' => [
ebd54ae9 204 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 205 { action => 'PARAM', proto => 'udp', dport => '53' },
206 { action => 'PARAM', proto => 'tcp', dport => '53' },
207 ],
208 'Distcc' => [
ebd54ae9 209 "Distributed Compiler service",
857f62c8
DM		 210 { action => 'PARAM', proto => 'tcp', dport => '3632' },
211 ],
857f62c8 212 'FTP' => [
ebd54ae9 213 "File Transfer Protocol",
857f62c8
DM		 214 { action => 'PARAM', proto => 'tcp', dport => '21' },
215 ],
216 'Finger' => [
ebd54ae9 217 "Finger protocol (RFC 742)",
857f62c8
DM		 218 { action => 'PARAM', proto => 'tcp', dport => '79' },
219 ],
220 'GNUnet' => [
ebd54ae9 221 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 222 { action => 'PARAM', proto => 'tcp', dport => '2086' },
223 { action => 'PARAM', proto => 'udp', dport => '2086' },
224 { action => 'PARAM', proto => 'tcp', dport => '1080' },
225 { action => 'PARAM', proto => 'udp', dport => '1080' },
226 ],
227 'GRE' => [
d2c3266d 228 "Generic Routing Encapsulation tunneling protocol",
857f62c8 229 { action => 'PARAM', proto => '47' },
857f62c8
DM		 230 ],
231 'Git' => [
ebd54ae9 232 "Git distributed revision control traffic",
857f62c8
DM		 233 { action => 'PARAM', proto => 'tcp', dport => '9418' },
234 ],
857f62c8 235 'HKP' => [
ebd54ae9 236 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 237 { action => 'PARAM', proto => 'tcp', dport => '11371' },
238 ],
239 'HTTP' => [
ebd54ae9 240 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 241 { action => 'PARAM', proto => 'tcp', dport => '80' },
242 ],
857f62c8 243 'HTTPS' => [
ebd54ae9 244 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 245 { action => 'PARAM', proto => 'tcp', dport => '443' },
246 ],
247 'ICPV2' => [
ebd54ae9 248 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 249 { action => 'PARAM', proto => 'udp', dport => '3130' },
250 ],
251 'ICQ' => [
ebd54ae9 252 "AOL Instant Messenger traffic",
857f62c8
DM		 253 { action => 'PARAM', proto => 'tcp', dport => '5190' },
254 ],
255 'IMAP' => [
ebd54ae9 256 "Internet Message Access Protocol",
857f62c8
DM		 257 { action => 'PARAM', proto => 'tcp', dport => '143' },
258 ],
259 'IMAPS' => [
ebd54ae9 260 "Internet Message Access Protocol over SSL",
857f62c8
DM		 261 { action => 'PARAM', proto => 'tcp', dport => '993' },
262 ],
263 'IPIP' => [
d2c3266d 264 "IPIP capsulation traffic",
857f62c8 265 { action => 'PARAM', proto => '94' },
857f62c8 266 ],
857f62c8 267 'IPsec' => [
d2c3266d 268 "IPsec traffic",
857f62c8
DM		 269 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
270 { action => 'PARAM', proto => '50' },
857f62c8
DM		 271 ],
272 'IPsecah' => [
d2c3266d 273 "IPsec authentication (AH) traffic",
857f62c8
DM		 274 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
275 { action => 'PARAM', proto => '51' },
857f62c8
DM		 276 ],
277 'IPsecnat' => [
d2c3266d 278 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 279 { action => 'PARAM', proto => 'udp', dport => '500' },
280 { action => 'PARAM', proto => 'udp', dport => '4500' },
281 { action => 'PARAM', proto => '50' },
857f62c8
DM		 282 ],
283 'IRC' => [
ebd54ae9 284 "Internet Relay Chat traffic",
857f62c8
DM		 285 { action => 'PARAM', proto => 'tcp', dport => '6667' },
286 ],
857f62c8 287 'Jetdirect' => [
ebd54ae9 288 "HP Jetdirect printing",
857f62c8
DM		 289 { action => 'PARAM', proto => 'tcp', dport => '9100' },
290 ],
291 'L2TP' => [
ebd54ae9 292 "Layer 2 Tunneling Protocol traffic",
857f62c8 293 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 294 ],
295 'LDAP' => [
ebd54ae9 296 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 297 { action => 'PARAM', proto => 'tcp', dport => '389' },
298 ],
299 'LDAPS' => [
ebd54ae9 300 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 301 { action => 'PARAM', proto => 'tcp', dport => '636' },
302 ],
303 'MSNP' => [
ebd54ae9 304 "Microsoft Notification Protocol",
857f62c8
DM		 305 { action => 'PARAM', proto => 'tcp', dport => '1863' },
306 ],
307 'MSSQL' => [
ebd54ae9 308 "Microsoft SQL Server",
857f62c8
DM		 309 { action => 'PARAM', proto => 'tcp', dport => '1433' },
310 ],
311 'Mail' => [
ebd54ae9 312 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 313 { action => 'PARAM', proto => 'tcp', dport => '25' },
314 { action => 'PARAM', proto => 'tcp', dport => '465' },
315 { action => 'PARAM', proto => 'tcp', dport => '587' },
316 ],
317 'Munin' => [
ebd54ae9 318 "Munin networked resource monitoring traffic",
857f62c8
DM		 319 { action => 'PARAM', proto => 'tcp', dport => '4949' },
320 ],
321 'MySQL' => [
ebd54ae9 322 "MySQL server",
857f62c8
DM		 323 { action => 'PARAM', proto => 'tcp', dport => '3306' },
324 ],
325 'NNTP' => [
ebd54ae9 326 "NNTP traffic (Usenet).",
857f62c8
DM		 327 { action => 'PARAM', proto => 'tcp', dport => '119' },
328 ],
329 'NNTPS' => [
ebd54ae9 330 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 331 { action => 'PARAM', proto => 'tcp', dport => '563' },
332 ],
333 'NTP' => [
ebd54ae9 334 "Network Time Protocol (ntpd)",
857f62c8
DM		 335 { action => 'PARAM', proto => 'udp', dport => '123' },
336 ],
857f62c8 337 'OSPF' => [
ebd54ae9 338 "OSPF multicast traffic",
857f62c8
DM		 339 { action => 'PARAM', proto => '89' },
340 ],
341 'OpenVPN' => [
ebd54ae9 342 "OpenVPN traffic",
857f62c8
DM		 343 { action => 'PARAM', proto => 'udp', dport => '1194' },
344 ],
345 'PCA' => [
ebd54ae9 346 "Symantec PCAnywere (tm)",
857f62c8
DM		 347 { action => 'PARAM', proto => 'udp', dport => '5632' },
348 { action => 'PARAM', proto => 'tcp', dport => '5631' },
349 ],
350 'POP3' => [
ebd54ae9 351 "POP3 traffic",
857f62c8
DM		 352 { action => 'PARAM', proto => 'tcp', dport => '110' },
353 ],
354 'POP3S' => [
ebd54ae9 355 "Encrypted POP3 traffic",
857f62c8
DM		 356 { action => 'PARAM', proto => 'tcp', dport => '995' },
357 ],
358 'PPtP' => [
ebd54ae9 359 "Point-to-Point Tunneling Protocol",
857f62c8 360 { action => 'PARAM', proto => '47' },
857f62c8
DM		 361 { action => 'PARAM', proto => 'tcp', dport => '1723' },
362 ],
363 'Ping' => [
ebd54ae9 364 "ICMP echo request",
269d4f13 365 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 366 ],
367 'PostgreSQL' => [
ebd54ae9 368 "PostgreSQL server",
857f62c8
DM		 369 { action => 'PARAM', proto => 'tcp', dport => '5432' },
370 ],
371 'Printer' => [
ebd54ae9 372 "Line Printer protocol printing",
857f62c8
DM		 373 { action => 'PARAM', proto => 'tcp', dport => '515' },
374 ],
375 'RDP' => [
ebd54ae9 376 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 377 { action => 'PARAM', proto => 'tcp', dport => '3389' },
378 ],
d2c3266d 379 'RIP' => [
ebd54ae9 380 "Routing Information Protocol (bidirectional)",
857f62c8 381 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 382 ],
383 'RNDC' => [
ebd54ae9 384 "BIND remote management protocol",
857f62c8
DM		 385 { action => 'PARAM', proto => 'tcp', dport => '953' },
386 ],
387 'Razor' => [
ebd54ae9 388 "Razor Antispam System",
857f62c8
DM		 389 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
390 ],
391 'Rdate' => [
ebd54ae9 392 "Remote time retrieval (rdate)",
857f62c8
DM		 393 { action => 'PARAM', proto => 'tcp', dport => '37' },
394 ],
395 'Rsync' => [
ebd54ae9 396 "Rsync server",
857f62c8
DM		 397 { action => 'PARAM', proto => 'tcp', dport => '873' },
398 ],
399 'SANE' => [
ebd54ae9 400 "SANE network scanning",
857f62c8
DM		 401 { action => 'PARAM', proto => 'tcp', dport => '6566' },
402 ],
403 'SMB' => [
ebd54ae9 404 "Microsoft SMB traffic",
857f62c8
DM		 405 { action => 'PARAM', proto => 'udp', dport => '135,445' },
406 { action => 'PARAM', proto => 'udp', dport => '137:139' },
407 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
408 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
409 ],
857f62c8 410 'SMBswat' => [
ebd54ae9 411 "Samba Web Administration Tool",
857f62c8
DM		 412 { action => 'PARAM', proto => 'tcp', dport => '901' },
413 ],
414 'SMTP' => [
ebd54ae9 415 "Simple Mail Transfer Protocol",
857f62c8
DM		 416 { action => 'PARAM', proto => 'tcp', dport => '25' },
417 ],
418 'SMTPS' => [
ebd54ae9 419 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 420 { action => 'PARAM', proto => 'tcp', dport => '465' },
421 ],
422 'SNMP' => [
ebd54ae9 423 "Simple Network Management Protocol",
857f62c8
DM		 424 { action => 'PARAM', proto => 'udp', dport => '161:162' },
425 { action => 'PARAM', proto => 'tcp', dport => '161' },
426 ],
427 'SPAMD' => [
ebd54ae9 428 "Spam Assassin SPAMD traffic",
857f62c8
DM		 429 { action => 'PARAM', proto => 'tcp', dport => '783' },
430 ],
431 'SSH' => [
ebd54ae9 432 "Secure shell traffic",
857f62c8
DM		 433 { action => 'PARAM', proto => 'tcp', dport => '22' },
434 ],
435 'SVN' => [
ebd54ae9 436 "Subversion server (svnserve)",
857f62c8
DM		 437 { action => 'PARAM', proto => 'tcp', dport => '3690' },
438 ],
439 'SixXS' => [
ebd54ae9 440 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 441 { action => 'PARAM', proto => 'tcp', dport => '3874' },
442 { action => 'PARAM', proto => 'udp', dport => '3740' },
443 { action => 'PARAM', proto => '41' },
444 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
445 ],
446 'Squid' => [
ebd54ae9 447 "Squid web proxy traffic",
857f62c8
DM		 448 { action => 'PARAM', proto => 'tcp', dport => '3128' },
449 ],
450 'Submission' => [
ebd54ae9 451 "Mail message submission traffic",
857f62c8
DM		 452 { action => 'PARAM', proto => 'tcp', dport => '587' },
453 ],
454 'Syslog' => [
ebd54ae9 455 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 456 { action => 'PARAM', proto => 'udp', dport => '514' },
457 { action => 'PARAM', proto => 'tcp', dport => '514' },
458 ],
459 'TFTP' => [
ebd54ae9 460 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 461 { action => 'PARAM', proto => 'udp', dport => '69' },
462 ],
463 'Telnet' => [
ebd54ae9 464 "Telnet traffic",
857f62c8
DM		 465 { action => 'PARAM', proto => 'tcp', dport => '23' },
466 ],
467 'Telnets' => [
ebd54ae9 468 "Telnet over SSL",
857f62c8
DM		 469 { action => 'PARAM', proto => 'tcp', dport => '992' },
470 ],
471 'Time' => [
ebd54ae9 472 "RFC 868 Time protocol",
857f62c8
DM		 473 { action => 'PARAM', proto => 'tcp', dport => '37' },
474 ],
475 'Trcrt' => [
ebd54ae9 476 "Traceroute (for up to 30 hops) traffic",
857f62c8 477 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 478 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 479 ],
480 'VNC' => [
93be4333
DM		 481 "VNC traffic for VNC display's 0 - 99",
482 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 483 ],
484 'VNCL' => [
ebd54ae9 485 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 486 { action => 'PARAM', proto => 'tcp', dport => '5500' },
487 ],
488 'Web' => [
ebd54ae9 489 "WWW traffic (HTTP and HTTPS)",
857f62c8 490 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 491 { action => 'PARAM', proto => 'tcp', dport => '443' },
492 ],
857f62c8 493 'Webcache' => [
ebd54ae9 494 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 495 { action => 'PARAM', proto => 'tcp', dport => '8080' },
496 ],
497 'Webmin' => [
ebd54ae9 498 "Webmin traffic",
857f62c8
DM		 499 { action => 'PARAM', proto => 'tcp', dport => '10000' },
500 ],
501 'Whois' => [
ebd54ae9 502 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 503 { action => 'PARAM', proto => 'tcp', dport => '43' },
504 ],
961b4928
DM		 505};
506
507my $pve_fw_parsed_macros;
ebd54ae9 508my $pve_fw_macro_descr;
961b4928 509my $pve_fw_preferred_macro_names = {};
3a616aa0 510
5547adf7
AD		 511my $pve_std_chains = {};
512$pve_std_chains->{4} = {
d8f2505e
DM		 513 'PVEFW-SET-ACCEPT-MARK' => [
514 "-j MARK --set-mark 1",
515 ],
79929d9c
DM		 516 'PVEFW-DropBroadcast' => [
517 # same as shorewall 'Broadcast'
518 # simply DROP BROADCAST/MULTICAST/ANYCAST
519 # we can use this to reduce logging
520 { action => 'DROP', dsttype => 'BROADCAST' },
521 { action => 'DROP', dsttype => 'MULTICAST' },
522 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 523 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 524 ],
525 'PVEFW-reject' => [
526 # same as shorewall 'reject'
527 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 528 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 529 { action => 'DROP', proto => 'icmp' },
530 "-p tcp -j REJECT --reject-with tcp-reset",
531 "-p udp -j REJECT --reject-with icmp-port-unreachable",
532 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
533 "-j REJECT --reject-with icmp-host-prohibited",
534 ],
535 'PVEFW-Drop' => [
cbb5d6f3 536 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 537 # but REJECT/DROP some packages to reduce logging,
538 # and ACCEPT critical ICMP types
539 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
540 # we are not interested in BROADCAST/MULTICAST/ANYCAST
541 { action => 'PVEFW-DropBroadcast' },
542 # ACCEPT critical ICMP types
543 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
544 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
545 # Drop packets with INVALID state
546 "-m conntrack --ctstate INVALID -j DROP",
547 # Drop Microsoft SMB noise
548 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
549 { action => 'DROP', proto => 'udp', dport => '137:139'},
550 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
551 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
552 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
553 # Drop new/NotSyn traffic so that it doesn't get logged
554 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
555 # Drop DNS replies
556 { action => 'DROP', proto => 'udp', sport => 53 },
557 ],
558 'PVEFW-Reject' => [
cbb5d6f3 559 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 560 # but REJECT/DROP some packages to reduce logging,
561 # and ACCEPT critical ICMP types
562 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
563 # we are not interested in BROADCAST/MULTICAST/ANYCAST
564 { action => 'PVEFW-DropBroadcast' },
565 # ACCEPT critical ICMP types
566 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
567 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
568 # Drop packets with INVALID state
569 "-m conntrack --ctstate INVALID -j DROP",
570 # Drop Microsoft SMB noise
571 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
572 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
573 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
574 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
575 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
576 # Drop new/NotSyn traffic so that it doesn't get logged
577 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
578 # Drop DNS replies
579 { action => 'DROP', proto => 'udp', sport => 53 },
580 ],
d86659ef
DM		 581 'PVEFW-tcpflags' => [
582 # same as shorewall tcpflags action.
583 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
584 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
585 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
586 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
587 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
588 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
589 ],
bee633ab
DM		 590 'PVEFW-smurfs' => [
591 # same as shorewall smurfs action
592 # Filter packets for smurfs (packets with a broadcast address as the source).
593 "-s 0.0.0.0/32 -j RETURN",
594 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
595 "-s 224.0.0.0/4 -g PVEFW-smurflog",
596 ],
d8f2505e
DM		 597};
598
47a79ff2
AD		 599$pve_std_chains->{6} = {
600 'PVEFW-SET-ACCEPT-MARK' => [
601 "-j MARK --set-mark 1",
602 ],
603 'PVEFW-DropBroadcast' => [
604 # same as shorewall 'Broadcast'
605 # simply DROP BROADCAST/MULTICAST/ANYCAST
606 # we can use this to reduce logging
607 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
649cd835
DM		 608 # ipv6 addrtype does not work with kernel 2.6.32
609 #{ action => 'DROP', dsttype => 'MULTICAST' },
610 #{ action => 'DROP', dsttype => 'ANYCAST' },
611 { action => 'DROP', dest => 'ff00::/8' },
47a79ff2
AD		 612 #{ action => 'DROP', dest => '224.0.0.0/4' },
613 ],
614 'PVEFW-reject' => [
615 # same as shorewall 'reject'
616 #{ action => 'DROP', dsttype => 'BROADCAST' },
617 #{ action => 'DROP', source => '224.0.0.0/4' },
649cd835 618 { action => 'DROP', proto => 'icmpv6' },
47a79ff2
AD		 619 "-p tcp -j REJECT --reject-with tcp-reset",
620 #"-p udp -j REJECT --reject-with icmp-port-unreachable",
621 #"-p icmp -j REJECT --reject-with icmp-host-unreachable",
622 #"-j REJECT --reject-with icmp-host-prohibited",
623 ],
624 'PVEFW-Drop' => [
625 # same as shorewall 'Drop', which is equal to DROP,
626 # but REJECT/DROP some packages to reduce logging,
627 # and ACCEPT critical ICMP types
649cd835 628 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
47a79ff2
AD		 629 # we are not interested in BROADCAST/MULTICAST/ANYCAST
630 { action => 'PVEFW-DropBroadcast' },
631 # ACCEPT critical ICMP types
632 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
633 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
634 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
635
636 # Drop packets with INVALID state
637 "-m conntrack --ctstate INVALID -j DROP",
638 # Drop Microsoft SMB noise
649cd835
DM		 639 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
640 { action => 'DROP', proto => 'udp', dport => '137:139'},
641 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
642 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
643 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
47a79ff2
AD		 644 # Drop new/NotSyn traffic so that it doesn't get logged
645 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
646 # Drop DNS replies
649cd835 647 { action => 'DROP', proto => 'udp', sport => 53 },
47a79ff2
AD		 648 ],
649 'PVEFW-Reject' => [
650 # same as shorewall 'Reject', which is equal to Reject,
651 # but REJECT/DROP some packages to reduce logging,
652 # and ACCEPT critical ICMP types
653 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
654 # we are not interested in BROADCAST/MULTICAST/ANYCAST
655 { action => 'PVEFW-DropBroadcast' },
656 # ACCEPT critical ICMP types
657 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
658 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
659 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
660
661 # Drop packets with INVALID state
662 "-m conntrack --ctstate INVALID -j DROP",
663 # Drop Microsoft SMB noise
664 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
665 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
666 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
667 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
668 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
669 # Drop new/NotSyn traffic so that it doesn't get logged
670 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
671 # Drop DNS replies
672 { action => 'DROP', proto => 'udp', sport => 53 },
673 ],
674 'PVEFW-tcpflags' => [
675 # same as shorewall tcpflags action.
676 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
677 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
678 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
679 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
680 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
681 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
682 ],
47a79ff2
AD		 683};
684
4b586518
DM		 685# iptables -p icmp -h
686my $icmp_type_names = {
687 any => 1,
688 'echo-reply' => 1,
689 'destination-unreachable' => 1,
690 'network-unreachable' => 1,
691 'host-unreachable' => 1,
692 'protocol-unreachable' => 1,
693 'port-unreachable' => 1,
694 'fragmentation-needed' => 1,
695 'source-route-failed' => 1,
696 'network-unknown' => 1,
697 'host-unknown' => 1,
698 'network-prohibited' => 1,
699 'host-prohibited' => 1,
700 'TOS-network-unreachable' => 1,
701 'TOS-host-unreachable' => 1,
702 'communication-prohibited' => 1,
703 'host-precedence-violation' => 1,
704 'precedence-cutoff' => 1,
705 'source-quench' => 1,
706 'redirect' => 1,
707 'network-redirect' => 1,
708 'host-redirect' => 1,
709 'TOS-network-redirect' => 1,
710 'TOS-host-redirect' => 1,
711 'echo-request' => 1,
712 'router-advertisement' => 1,
713 'router-solicitation' => 1,
714 'time-exceeded' => 1,
715 'ttl-zero-during-transit' => 1,
716 'ttl-zero-during-reassembly' => 1,
717 'parameter-problem' => 1,
718 'ip-header-bad' => 1,
719 'required-option-missing' => 1,
720 'timestamp-request' => 1,
721 'timestamp-reply' => 1,
722 'address-mask-request' => 1,
723 'address-mask-reply' => 1,
724};
725
041b9277
DM		 726# ip6tables -p icmpv6 -h
727
728my $icmpv6_type_names = {
729 'any' => 1,
730 'destination-unreachable' => 1,
731 'no-route' => 1,
732 'communication-prohibited' => 1,
733 'address-unreachable' => 1,
734 'port-unreachable' => 1,
735 'packet-too-big' => 1,
736 'time-exceeded' => 1,
737 'ttl-zero-during-transit' => 1,
738 'ttl-zero-during-reassembly' => 1,
739 'parameter-problem' => 1,
740 'bad-header' => 1,
741 'unknown-header-type' => 1,
742 'unknown-option' => 1,
743 'echo-request' => 1,
744 'echo-reply' => 1,
745 'router-solicitation' => 1,
746 'router-advertisement' => 1,
747 'neighbour-solicitation' => 1,
748 'neighbour-advertisement' => 1,
749 'redirect' => 1,
750};
751
54cd19a8 752sub init_firewall_macros {
6158271d 753
961b4928 754 $pve_fw_parsed_macros = {};
9aab3127 755
961b4928 756 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 757 my $lc_name = lc($k);
758 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 759 if (!ref($macro->[0])) {
760 $pve_fw_macro_descr->{$k} = shift @$macro;
761 }
e5076eee
DM		 762 $pve_fw_preferred_macro_names->{$lc_name} = $k;
763 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 764 }
9aab3127
DM		 765}
766
54cd19a8
DM		 767init_firewall_macros();
768
ebd54ae9
DM		 769sub get_macros {
770 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
771}
772
fcba0beb
DM		 773my $etc_services;
774
775sub get_etc_services {
776
777 return $etc_services if $etc_services;
778
779 my $filename = "/etc/services";
780
781 my $fh = IO::File->new($filename, O_RDONLY);
782 if (!$fh) {
783 warn "unable to read '$filename' - $!\n";
784 return {};
785 }
786
787 my $services = {};
788
789 while (my $line = <$fh>) {
790 chomp ($line);
791 next if $line =~m/^#/;
792 next if ($line =~m/^\s*$/);
793
794 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
795 $services->{byid}->{$2}->{name} = $1;
35b66e9d 796 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 797 $services->{byid}->{$2}->{$3} = 1;
798 $services->{byname}->{$1} = $services->{byid}->{$2};
799 }
800 }
801
802 close($fh);
803
6158271d
DM		 804 $etc_services = $services;
805
3a616aa0 806
fcba0beb
DM		 807 return $etc_services;
808}
809
810my $etc_protocols;
811
812sub get_etc_protocols {
813 return $etc_protocols if $etc_protocols;
814
815 my $filename = "/etc/protocols";
816
817 my $fh = IO::File->new($filename, O_RDONLY);
818 if (!$fh) {
819 warn "unable to read '$filename' - $!\n";
820 return {};
821 }
822
823 my $protocols = {};
824
825 while (my $line = <$fh>) {
826 chomp ($line);
827 next if $line =~m/^#/;
828 next if ($line =~m/^\s*$/);
829
830 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
831 $protocols->{byid}->{$2}->{name} = $1;
832 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
833 }
834 }
835
836 close($fh);
837
041b9277
DM		 838 # add special case for ICMP v6
839 $protocols->{byid}->{icmpv6}->{name} = "icmpv6";
840 $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6};
841
fcba0beb
DM		 842 $etc_protocols = $protocols;
843
844 return $etc_protocols;
845}
846
525778d7 847my $ipv4_mask_hash_localnet = {
93be4333
DM		 848 '255.255.0.0' => 16,
849 '255.255.128.0' => 17,
850 '255.255.192.0' => 18,
851 '255.255.224.0' => 19,
852 '255.255.240.0' => 20,
853 '255.255.248.0' => 21,
854 '255.255.252.0' => 22,
855 '255.255.254.0' => 23,
856 '255.255.255.0' => 24,
857 '255.255.255.128' => 25,
858 '255.255.255.192' => 26,
859 '255.255.255.224' => 27,
860 '255.255.255.240' => 28,
861 '255.255.255.248' => 29,
862 '255.255.255.252' => 30,
863};
864
525778d7 865my $__local_network;
93be4333 866
525778d7 867sub local_network {
ac633d30 868 my ($new_value) = @_;
93be4333 869
525778d7 870 $__local_network = $new_value if defined($new_value);
ac633d30 871
525778d7 872 return $__local_network if defined($__local_network);
93be4333
DM		 873
874 eval {
875 my $nodename = PVE::INotify::nodename();
876
877 my $ip = PVE::Cluster::remote_node_ip($nodename);
878
879 my $testip = Net::IP->new($ip);
bfc488f6 880
93be4333
DM		 881 my $routes = PVE::ProcFSTools::read_proc_net_route();
882 foreach my $entry (@$routes) {
525778d7 883 my $mask = $ipv4_mask_hash_localnet->{$entry->{mask}};
93be4333
DM		 884 next if !defined($mask);
885 return if $mask eq '0.0.0.0';
886 my $cidr = "$entry->{dest}/$mask";
887 my $testnet = Net::IP->new($cidr);
888 if ($testnet->overlaps($testip)) {
525778d7 889 $__local_network = $cidr;
93be4333
DM		 890 return;
891 }
892 }
893 };
894 warn $@ if $@;
895
525778d7 896 return $__local_network;
93be4333
DM		 897}
898
6d959e3f
DM		 899# ipset names are limited to 31 characters,
900# and we use '-v4' or '-v6' to indicate IP versions,
901# and we use '_swap' suffix for atomic update,
902# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 903
88c26d5e 904my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
708ba714
DM		 905
906sub compute_ipset_chain_name {
88c26d5e 907 my ($vmid, $ipset_name, $ipversion) = @_;
708ba714
DM		 908
909 $vmid = 0 if !defined($vmid);
910
88c26d5e 911 my $id = "$vmid-${ipset_name}-v$ipversion";
708ba714 912
88c26d5e 913 if (length($id) > $max_iptables_ipset_name_length) {
708ba714
DM		 914 $id = PVE::Tools::fnv31a_hex($id);
915 }
916
917 return "PVEFW-$id";
918}
919
b692f42c
DM		 920sub compute_ipfilter_ipset_name {
921 my ($iface) = @_;
922
923 return "ipfilter-$iface";
924}
925
ecbea048
DM		 926sub parse_address_list {
927 my ($str) = @_;
928
e2c62733
DM		 929 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
930 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
931 return;
932 }
933
934 if ($str =~ m/^${ip_alias_pattern}$/) {
935 die "alias name too long\n" if length($str) > $max_alias_name_length;
936 return;
937 }
d72beb8e 938
3162af6b
DM		 939 my $count = 0;
940 my $iprange = 0;
a589b6ac 941 my $ipversion;
7697c041 942
3162af6b
DM		 943 foreach my $elem (split(/,/, $str)) {
944 $count++;
c344e509
DM		 945 my $ip = Net::IP->new($elem);
946 if (!$ip) {
ecbea048
DM		 947 my $err = Net::IP::Error();
948 die "invalid IP address: $err\n";
949 }
3162af6b 950 $iprange = 1 if $elem =~ m/-/;
a589b6ac 951
c344e509 952 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM		 953
954 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 955 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM		 956
957 $ipversion = $new_ipversion;
ecbea048 958 }
e34d0e58 959
5163367b 960 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 961
7697c041 962 return $ipversion;
ecbea048 963}
dddd9413 964
fcba0beb
DM		 965sub parse_port_name_number_or_range {
966 my ($str) = @_;
967
968 my $services = PVE::Firewall::get_etc_services();
7ca36671 969 my $count = 0;
041b7e8e
DM		 970 my $icmp_port = 0;
971
fcba0beb 972 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 973 $count++;
974 if ($item =~ m/^(\d+):(\d+)$/) {
975 my ($port1, $port2) = ($1, $2);
976 die "invalid port '$port1'\n" if $port1 > 65535;
977 die "invalid port '$port2'\n" if $port2 > 65535;
978 } elsif ($item =~ m/^(\d+)$/) {
979 my $port = $1;
980 die "invalid port '$port'\n" if $port > 65535;
981 } else {
041b7e8e
DM		 982 if ($icmp_type_names->{$item}) {
983 $icmp_port = 1;
041b9277
DM		 984 } elsif ($icmpv6_type_names->{$item}) {
985 $icmp_port = 1;
041b7e8e 986 } else {
e34d0e58 987 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 988 }
fcba0beb
DM		 989 }
990 }
991
041b7e8e
DM		 992 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
993
7ca36671 994 return $count;
fcba0beb
DM		 995}
996
54cd19a8
DM		 997PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
998sub pve_fw_verify_port_spec {
999 my ($portstr) = @_;
1000
7ca36671 1001 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 1002
1003 return $portstr;
1004}
1005
d31689ee
DM		 1006PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
1007sub pve_fw_verify_addr_spec {
54cd19a8
DM		 1008 my ($list) = @_;
1009
1010 parse_address_list($list);
1011
1012 return $list;
1013}
1014
1015PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
1016sub pve_fw_verify_protocol_spec {
1017 my ($proto) = @_;
1018
1019 my $protocols = get_etc_protocols();
1020
1021 die "unknown protocol '$proto'\n" if $proto &&
1022 !(defined($protocols->{byname}->{$proto}) ||
1023 defined($protocols->{byid}->{$proto}));
1024
1025 return $proto;
1026}
1027
1028
d1c53b3e 1029# helper function for API
d1c53b3e 1030
5d38d64f
DM		 1031sub copy_opject_with_digest {
1032 my ($object) = @_;
1033
1034 my $sha = Digest::SHA->new('sha1');
1035
1036 my $res = {};
1037 foreach my $k (sort keys %$object) {
1038 my $v = $object->{$k};
0365eb68 1039 next if !defined($v);
5d38d64f
DM		 1040 $res->{$k} = $v;
1041 $sha->add($k, ':', $v, "\n");
1042 }
1043
55e686c7 1044 my $digest = $sha->hexdigest;
5d38d64f
DM		 1045
1046 $res->{digest} = $digest;
1047
1048 return wantarray ? ($res, $digest) : $res;
1049}
1050
1051sub copy_list_with_digest {
1052 my ($list) = @_;
1053
1054 my $sha = Digest::SHA->new('sha1');
1055
1056 my $res = [];
1057 foreach my $entry (@$list) {
1058 my $data = {};
1059 foreach my $k (sort keys %$entry) {
1060 my $v = $entry->{$k};
0365eb68 1061 next if !defined($v);
5d38d64f 1062 $data->{$k} = $v;
6d9246e7
DM		 1063 # Note: digest ignores refs ($rule->{errors})
1064 $sha->add($k, ':', $v, "\n") if !ref($v); ;
5d38d64f
DM		 1065 }
1066 push @$res, $data;
1067 }
1068
55e686c7 1069 my $digest = $sha->hexdigest;
5d38d64f
DM		 1070
1071 foreach my $entry (@$res) {
1072 $entry->{digest} = $digest;
1073 }
1074
1075 return wantarray ? ($res, $digest) : $res;
1076}
1077
9c7e0858
DM		 1078my $rule_properties = {
1079 pos => {
1080 description => "Update rule at position <pos>.",
1081 type => 'integer',
1082 minimum => 0,
1083 optional => 1,
1084 },
c71e785f 1085 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 1086 type => {
1087 type => 'string',
1088 optional => 1,
1089 enum => ['in', 'out', 'group'],
1090 },
1091 action => {
c14dacdf 1092 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 1093 type => 'string',
1094 optional => 1,
44be8ceb 1095 pattern => $security_group_name_pattern,
c14dacdf
DM		 1096 maxLength => 20,
1097 minLength => 2,
9c7e0858 1098 },
e5076eee
DM		 1099 macro => {
1100 type => 'string',
1101 optional => 1,
54cd19a8 1102 maxLength => 128,
e5076eee 1103 },
54cd19a8 1104 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 1105 source => {
d31689ee 1106 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1107 optional => 1,
1108 },
1109 dest => {
d31689ee 1110 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1111 optional => 1,
1112 },
1113 proto => {
54cd19a8 1114 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 1115 optional => 1,
1116 },
1117 enable => {
1118 type => 'boolean',
1119 optional => 1,
1120 },
1121 sport => {
54cd19a8 1122 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 1123 optional => 1,
1124 },
1125 dport => {
54cd19a8 1126 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 1127 optional => 1,
1128 },
1129 comment => {
1130 type => 'string',
1131 optional => 1,
1132 },
1133};
1134
1135sub add_rule_properties {
1136 my ($properties) = @_;
1137
1138 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 1139 my $h = $rule_properties->{$k};
1140 # copy data, so that we can modify later without side effects
1141 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1142 }
cbb5d6f3 1143
9c7e0858
DM		 1144 return $properties;
1145}
1146
5b7974df
DM		 1147sub delete_rule_properties {
1148 my ($rule, $delete_str) = @_;
e34d0e58 1149
5b7974df
DM		 1150 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1151 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1152 if !defined($rule_properties->{$opt});
1153 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1154 if $opt eq 'type' || $opt eq 'action';
1155 delete $rule->{$opt};
1156 }
1157
1158 return $rule;
1159}
1160
9a2745a0 1161my $apply_macro = sub {
b828ae3d 1162 my ($macro_name, $param, $verify, $ipversion) = @_;
9a2745a0
DM		 1163
1164 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1165 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1166
b828ae3d
DM		 1167 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1168 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1169 }
1170
9a2745a0
DM		 1171 my $rules = [];
1172
1173 foreach my $templ (@$macro_rules) {
1174 my $rule = {};
1175 my $param_used = {};
1176 foreach my $k (keys %$templ) {
1177 my $v = $templ->{$k};
1178 if ($v eq 'PARAM') {
1179 $v = $param->{$k};
1180 $param_used->{$k} = 1;
1181 } elsif ($v eq 'DEST') {
1182 $v = $param->{dest};
1183 $param_used->{dest} = 1;
1184 } elsif ($v eq 'SOURCE') {
1185 $v = $param->{source};
1186 $param_used->{source} = 1;
1187 }
1188
1189 if (!defined($v)) {
1190 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1191 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1192 die "$msg\n";
1193 }
1194 $rule->{$k} = $v;
1195 }
1196 foreach my $k (keys %$param) {
1197 next if $k eq 'macro';
1198 next if !defined($param->{$k});
1199 next if $param_used->{$k};
1200 if (defined($rule->{$k})) {
1201 if ($rule->{$k} ne $param->{$k}) {
1202 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1203 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1204 die "$msg\n";
1205 }
1206 } else {
1207 $rule->{$k} = $param->{$k};
1208 }
1209 }
1210 push @$rules, $rule;
1211 }
1212
1213 return $rules;
1214};
1215
b6b8e6ad
DM		 1216my $rule_env_iface_lookup = {
1217 'ct' => 1,
1218 'vm' => 1,
1219 'group' => 0,
1220 'cluster' => 1,
1221 'host' => 1,
1222};
1223
7ca36671 1224sub verify_rule {
a523e057 1225 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1226
1227 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1228
b6b8e6ad
DM		 1229 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1230 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1231
a523e057
DM		 1232 my $errors = $rule->{errors} || {};
1233
6d9246e7 1234 my $error_count = 0;
7ca36671 1235
6d9246e7
DM		 1236 my $add_error = sub {
1237 my ($param, $msg) = @_;
d4cda423 1238 chomp $msg;
6d9246e7
DM		 1239 raise_param_exc({ $param => $msg }) if !$noerr;
1240 $error_count++;
1241 $errors->{$param} = $msg if !$errors->{$param};
1242 };
1243
eea9d2a1
DM		 1244 my $ipversion;
1245 my $set_ip_version = sub {
1246 my $vers = shift;
1247 if ($vers) {
1248 die "detected mixed ipv4/ipv6 adresses in rule\n"
1249 if $ipversion && ($vers != $ipversion);
1250 $ipversion = $vers;
1251 }
1252 };
1253
a523e057 1254 my $check_ipset_or_alias_property = sub {
ae029a88 1255 my ($name, $expected_ipversion) = @_;
a523e057
DM		 1256
1257 if (my $value = $rule->{$name}) {
1258 if ($value =~ m/^\+/) {
4dfe04e6 1259 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1260 &$add_error($name, "no such ipset '$1'")
a523e057 1261 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1262
a523e057 1263 } else {
351052d1 1264 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1265 }
1266 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1267 my $alias = lc($value);
bfc488f6 1268 &$add_error($name, "no such alias '$value'")
70e524eb 1269 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
04f5088f 1270 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
70e524eb
AD		 1271 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1272
eea9d2a1 1273 &$set_ip_version($e->{ipversion});
a523e057
DM		 1274 }
1275 }
1276 };
1277
6d9246e7
DM		 1278 my $type = $rule->{type};
1279 my $action = $rule->{action};
bfc488f6 1280
6d9246e7
DM		 1281 &$add_error('type', "missing property") if !$type;
1282 &$add_error('action', "missing property") if !$action;
1283
1284 if ($type) {
1285 if ($type eq 'in' || $type eq 'out') {
1286 &$add_error('action', "unknown action '$action'")
1287 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1288 } elsif ($type eq 'group') {
1289 &$add_error('type', "security groups not allowed")
1290 if !$allow_groups;
1291 &$add_error('action', "invalid characters in security group name")
1292 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1293 } else {
1294 &$add_error('type', "unknown rule type '$type'");
1295 }
7ca36671 1296 }
e34d0e58 1297
dba740a9 1298 if ($rule->{iface}) {
bfc488f6 1299 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1300 if !$allow_iface;
dba740a9 1301 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1302 &$add_error('iface', $@) if $@;
b6b8e6ad
DM		 1303 if ($rule_env eq 'vm') {
1304 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1305 if $rule->{iface} !~ m/^net(\d+)$/;
1306 } elsif ($rule_env eq 'ct') {
1307 &$add_error('iface', "value does not match the regex pattern '(venet|eth\\d+)'")
1308 if $rule->{iface} !~ m/^(venet|eth(\d+))$/;
1309 }
1310 }
7ca36671
DM		 1311
1312 if ($rule->{macro}) {
6d9246e7
DM		 1313 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1314 $rule->{macro} = $preferred_name;
1315 } else {
1316 &$add_error('macro', "unknown macro '$rule->{macro}'");
1317 }
1318 }
1319
1320 if ($rule->{proto}) {
1321 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1322 &$add_error('proto', $@) if $@;
041b9277
DM		 1323 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
1324 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
6d9246e7 1325 }
7ca36671
DM		 1326
1327 if ($rule->{dport}) {
1328 eval { parse_port_name_number_or_range($rule->{dport}); };
6d9246e7
DM		 1329 &$add_error('dport', $@) if $@;
1330 &$add_error('proto', "missing property - 'dport' requires this property")
914f9a50 1331 if !$rule->{proto};
6d9246e7 1332 }
7ca36671
DM		 1333
1334 if ($rule->{sport}) {
1335 eval { parse_port_name_number_or_range($rule->{sport}); };
6d9246e7
DM		 1336 &$add_error('sport', $@) if $@;
1337 &$add_error('proto', "missing property - 'sport' requires this property")
914f9a50 1338 if !$rule->{proto};
7ca36671
DM		 1339 }
1340
1341 if ($rule->{source}) {
041b9277
DM		 1342 eval {
1343 my $source_ipversion = parse_address_list($rule->{source});
1344 &$set_ip_version($source_ipversion);
1345 };
6d9246e7 1346 &$add_error('source', $@) if $@;
ae029a88 1347 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1348 }
1349
1350 if ($rule->{dest}) {
9e2205e5
DM		 1351 eval {
1352 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1353 &$set_ip_version($dest_ipversion);
9e2205e5 1354 };
6d9246e7 1355 &$add_error('dest', $@) if $@;
ae029a88 1356 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1357 }
1358
b828ae3d
DM		 1359 $rule->{ipversion} = $ipversion if $ipversion;
1360
a523e057 1361 if ($rule->{macro} && !$error_count) {
b828ae3d 1362 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM		 1363 if (my $err = $@) {
1364 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1365 my $eh = $err->{errors};
1366 foreach my $p (keys %$eh) {
1367 &$add_error($p, $eh->{$p});
1368 }
1369 } else {
1370 &$add_error('macro', "$err");
1371 }
1372 }
9a2745a0
DM		 1373 }
1374
6d9246e7
DM		 1375 $rule->{errors} = $errors if $error_count;
1376
7ca36671
DM		 1377 return $rule;
1378}
1379
9c7e0858
DM		 1380sub copy_rule_data {
1381 my ($rule, $param) = @_;
1382
1383 foreach my $k (keys %$rule_properties) {
1384 if (defined(my $v = $param->{$k})) {
1385 if ($v eq '' || $v eq '-') {
1386 delete $rule->{$k};
1387 } else {
1388 $rule->{$k} = $v;
1389 }
9c7e0858
DM		 1390 }
1391 }
7ca36671 1392
9c7e0858
DM		 1393 return $rule;
1394}
1395
9f6845cf
DM		 1396sub rules_modify_permissions {
1397 my ($rule_env) = @_;
1398
1399 if ($rule_env eq 'host') {
1400 return {
1401 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1402 };
1403 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1404 return {
1405 check => ['perm', '/', [ 'Sys.Modify' ]],
1406 };
1407 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1408 return {
1409 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1410 }
1411 }
1412
1413 return undef;
1414}
1415
1416sub rules_audit_permissions {
1417 my ($rule_env) = @_;
1418
1419 if ($rule_env eq 'host') {
1420 return {
1421 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1422 };
1423 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1424 return {
1425 check => ['perm', '/', [ 'Sys.Audit' ]],
1426 };
1427 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1428 return {
1429 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1430 }
1431 }
1432
1433 return undef;
1434}
1435
9c7e0858 1436# core functions
780bcc0f
DM		 1437my $bridge_firewall_enabled = 0;
1438
1439sub enable_bridge_firewall {
1440
1441 return if $bridge_firewall_enabled; # only once
1442
5f0a912c
DM		 1443 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1444 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1445
6a8a75db
DM		 1446 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1447 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1448
780bcc0f
DM		 1449 $bridge_firewall_enabled = 1;
1450}
1451
8cebfa6f 1452my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1453
b16e818e
DM		 1454sub iptables_restore_cmdlist {
1455 my ($cmdlist) = @_;
3a616aa0 1456
59f9b456 1457 run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD		 1458}
1459
17da5c0f
AD		 1460sub ip6tables_restore_cmdlist {
1461 my ($cmdlist) = @_;
1462
59f9b456 1463 run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD		 1464}
1465
34cdedfa
AD		 1466sub ipset_restore_cmdlist {
1467 my ($cmdlist) = @_;
1468
59f9b456 1469 run_command("/usr/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD		 1470}
1471
de2a57cd 1472sub iptables_get_chains {
17da5c0f
AD		 1473 my ($iptablescmd) = @_;
1474
1475 $iptablescmd = "iptables" if !$iptablescmd;
de2a57cd
DM		 1476
1477 my $res = {};
1478
1479 # check what chains we want to track
1480 my $is_pvefw_chain = sub {
1481 my $name = shift;
1482
dec84fcd
DM		 1483 return 1 if $name =~ m/^PVEFW-\S+$/;
1484
de2a57cd 1485 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1486
1487 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1488
9e15114a
DM		 1489 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1490
a01c32c7 1491 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1492 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1493
1494 return undef;
1495 };
1496
1497 my $table = '';
1498
c4a2e5ae
DM		 1499 my $hooks = {};
1500
de2a57cd
DM		 1501 my $parser = sub {
1502 my $line = shift;
1503
1504 return if $line =~ m/^#/;
1505 return if $line =~ m/^\s*$/;
1506
1507 if ($line =~ m/^\*(\S+)$/) {
1508 $table = $1;
1509 return;
1510 }
1511
1512 return if $table ne 'filter';
1513
1514 if ($line =~ m/^:(\S+)\s/) {
1515 my $chain = $1;
1516 return if !&$is_pvefw_chain($chain);
3fa83edf 1517 $res->{$chain} = "unknown";
09d5f68e 1518 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1519 my ($chain, $sig) = ($1, $2);
de2a57cd 1520 return if !&$is_pvefw_chain($chain);
3fa83edf 1521 $res->{$chain} = $sig;
c4a2e5ae
DM		 1522 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1523 $hooks->{$1} = 1;
de2a57cd
DM		 1524 } else {
1525 # simply ignore the rest
1526 return;
1527 }
1528 };
1529
17da5c0f 1530 run_command("/sbin/$iptablescmd-save", outfunc => $parser);
de2a57cd 1531
c4a2e5ae 1532 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1533}
1534
9bf7d929
DM		 1535sub iptables_chain_digest {
1536 my ($rules) = @_;
1537 my $digest = Digest::SHA->new('sha1');
1538 foreach my $rule (@$rules) { # order is important
1539 $digest->add($rule);
1540 }
1541 return $digest->b64digest;
1542}
1543
3f95d14a
DM		 1544sub ipset_chain_digest {
1545 my ($rules) = @_;
4bd0a9c4 1546
3f95d14a
DM		 1547 my $digest = Digest::SHA->new('sha1');
1548 foreach my $rule (sort @$rules) { # note: sorted
1549 $digest->add($rule);
1550 }
1551 return $digest->b64digest;
1552}
1553
34cdedfa
AD		 1554sub ipset_get_chains {
1555
1556 my $res = {};
1557 my $chains = {};
1558
1559 my $parser = sub {
1560 my $line = shift;
1561
1562 return if $line =~ m/^#/;
1563 return if $line =~ m/^\s*$/;
4b96e877 1564 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1565 my $chain = $1;
1566 $line =~ s/\s+$//; # delete trailing white space
1567 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1568 } else {
1569 # simply ignore the rest
1570 return;
1571 }
1572 };
1573
3f95d14a 1574 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1575
3f95d14a
DM		 1576 # compute digest for each chain
1577 foreach my $chain (keys %$chains) {
1578 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1579 }
1580
1581 return $res;
1582}
1583
eba0fb64 1584sub ruleset_generate_cmdstr {
88c26d5e 1585 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
3a616aa0 1586
00bb4391 1587 return if defined($rule->{enable}) && !$rule->{enable};
6d9246e7 1588 return if $rule->{errors};
11bac5c2 1589
e5076eee
DM		 1590 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1591
1592 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1593 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1594
41524a58 1595 my @cmd = ();
3a616aa0 1596
eba0fb64
DM		 1597 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1598 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1599
ba791b1f
AD		 1600 my $source = $rule->{source};
1601 my $dest = $rule->{dest};
1602
cbb5d6f3 1603 if ($source) {
44be8ceb 1604 if ($source =~ m/^\+/) {
4dfe04e6 1605 if ($source =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1606 my $name = $1;
1607 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
88c26d5e 1608 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
708ba714 1609 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb 1610 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
88c26d5e 1611 my $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
708ba714 1612 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb
DM		 1613 } else {
1614 die "no such ipset '$name'\n";
1615 }
44be8ceb
DM		 1616 } else {
1617 die "invalid security group name '$source'\n";
1618 }
1619 } elsif ($source =~ m/^${ip_alias_pattern}$/){
81d574a7 1620 my $alias = lc($source);
04f5088f 1621 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
e523d2bb
DM		 1622 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1623 die "no such alias '$source'\n" if !$e;
81d574a7 1624 push @cmd, "-s $e->{cidr}";
ac8242cc 1625 } elsif ($source =~ m/\-/){
ba791b1f 1626 push @cmd, "-m iprange --src-range $source";
cbb5d6f3 1627 } else {
ba791b1f
AD		 1628 push @cmd, "-s $source";
1629 }
1630 }
1631
cbb5d6f3 1632 if ($dest) {
44be8ceb 1633 if ($dest =~ m/^\+/) {
4dfe04e6 1634 if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1635 my $name = $1;
1636 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
88c26d5e 1637 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
ac4580a0 1638 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb 1639 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
88c26d5e 1640 my $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
708ba714 1641 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb
DM		 1642 } else {
1643 die "no such ipset '$name'\n";
1644 }
44be8ceb
DM		 1645 } else {
1646 die "invalid security group name '$dest'\n";
1647 }
1648 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
51b40846 1649 my $alias = lc($dest);
04f5088f 1650 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
e523d2bb
DM		 1651 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1652 die "no such alias '$dest'\n" if !$e;
81d574a7 1653 push @cmd, "-d $e->{cidr}";
cbb5d6f3 1654 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f 1655 push @cmd, "-m iprange --dst-range $dest";
cbb5d6f3 1656 } else {
d6d2a385 1657 push @cmd, "-d $dest";
ba791b1f
AD		 1658 }
1659 }
4b586518 1660
181390b0 1661 if ($rule->{proto}) {
41524a58 1662 push @cmd, "-p $rule->{proto}";
e3a1d391 1663
181390b0 1664 my $multiport = 0;
e5076eee
DM		 1665 $multiport++ if $nbdport > 1;
1666 $multiport++ if $nbsport > 1;
e3a1d391 1667
41524a58 1668 push @cmd, "--match multiport" if $multiport;
4b586518 1669
cbb5d6f3 1670 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1671 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1672
1673 if ($rule->{dport}) {
1674 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1675 # Note: we use dport to store --icmp-type
1676 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1677 push @cmd, "-m icmp --icmp-type $rule->{dport}";
041b9277
DM		 1678 } elsif ($rule->{proto} && $rule->{proto} eq 'icmpv6') {
1679 # Note: we use dport to store --icmpv6-type
1680 die "unknown icmpv6-type '$rule->{dport}'\n" if !defined($icmpv6_type_names->{$rule->{dport}});
1681 push @cmd, "-m icmpv6 --icmpv6-type $rule->{dport}";
181390b0 1682 } else {
e5076eee 1683 if ($nbdport > 1) {
181390b0 1684 if ($multiport == 2) {
41524a58 1685 push @cmd, "--ports $rule->{dport}";
181390b0 1686 } else {
41524a58 1687 push @cmd, "--dports $rule->{dport}";
181390b0 1688 }
e3a1d391 1689 } else {
41524a58 1690 push @cmd, "--dport $rule->{dport}";
e3a1d391 1691 }
4b586518
DM		 1692 }
1693 }
4b586518 1694
181390b0 1695 if ($rule->{sport}) {
e5076eee 1696 if ($nbsport > 1) {
41524a58 1697 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1698 } else {
41524a58 1699 push @cmd, "--sport $rule->{sport}";
181390b0 1700 }
4b586518 1701 }
181390b0 1702 } elsif ($rule->{dport} || $rule->{sport}) {
93d96f83
DM		 1703 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
1704 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
4b586518
DM		 1705 }
1706
41524a58 1707 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1708
1709 if (my $action = $rule->{action}) {
cbb5d6f3 1710 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1711 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1712 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1713 }
3a616aa0 1714
eba0fb64
DM		 1715 return scalar(@cmd) ? join(' ', @cmd) : undef;
1716}
1717
1718sub ruleset_generate_rule {
88c26d5e 1719 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
eba0fb64 1720
e5076eee
DM		 1721 my $rules;
1722
1723 if ($rule->{macro}) {
b828ae3d 1724 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM		 1725 } else {
1726 $rules = [ $rule ];
1727 }
1728
d4091b82
DM		 1729 # update all or nothing
1730
1731 my @cmds = ();
cbb5d6f3 1732 foreach my $tmp (@$rules) {
88c26d5e 1733 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
d4091b82 1734 push @cmds, $cmdstr;
e5076eee 1735 }
41524a58 1736 }
d4091b82
DM		 1737
1738 foreach my $cmdstr (@cmds) {
1739 ruleset_addrule($ruleset, $chain, $cmdstr);
1740 }
3fa83edf 1741}
0f168d7b 1742
eba0fb64 1743sub ruleset_generate_rule_insert {
88c26d5e 1744 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto) = @_;
eba0fb64 1745
e5076eee
DM		 1746 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1747
88c26d5e 1748 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $ipversion, $rule, $actions, $goto)) {
eba0fb64
DM		 1749 ruleset_insertrule($ruleset, $chain, $cmdstr);
1750 }
1751}
3fa83edf
DM		 1752
1753sub ruleset_create_chain {
1754 my ($ruleset, $chain) = @_;
3a616aa0 1755
d050c724 1756 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1757 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1758
3fa83edf
DM		 1759 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1760
1761 $ruleset->{$chain} = [];
3a616aa0
AD		 1762}
1763
3fa83edf
DM		 1764sub ruleset_chain_exist {
1765 my ($ruleset, $chain) = @_;
3a616aa0 1766
3fa83edf
DM		 1767 return $ruleset->{$chain} ? 1 : undef;
1768}
3a616aa0 1769
3fa83edf
DM		 1770sub ruleset_addrule {
1771 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1772
3fa83edf 1773 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1774
3fa83edf
DM		 1775 push @{$ruleset->{$chain}}, "-A $chain $rule";
1776}
3a616aa0 1777
3fa83edf
DM		 1778sub ruleset_insertrule {
1779 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1780
3fa83edf 1781 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1782
3fa83edf
DM		 1783 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1784}
3a616aa0 1785
782c4cde
DM		 1786sub get_log_rule_base {
1787 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1788
782c4cde
DM		 1789 die "internal error - no log level" if !defined($loglevel);
1790
1791 $vmid = 0 if !defined($vmid);
1792
cbb5d6f3 1793 # Note: we use special format for prefix to pass further
782c4cde
DM		 1794 # info to log daemon (VMID, LOGVELEL and CHAIN)
1795
1796 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1797}
1798
1799sub ruleset_addlog {
1800 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1801
1802 return if !defined($loglevel);
1803
1804 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1805
1806 $logrule = "$rule $logrule" if defined($rule);
1807
88733a74 1808 ruleset_addrule($ruleset, $chain, $logrule);
782c4cde
DM		 1809}
1810
ead850e8 1811sub ruleset_add_chain_policy {
88c26d5e 1812 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1813
1814 if ($policy eq 'ACCEPT') {
1815
88c26d5e 1816 ruleset_generate_rule($ruleset, $chain, $ipversion, { action => 'ACCEPT' },
ead850e8
DM		 1817 { ACCEPT => $accept_action});
1818
1819 } elsif ($policy eq 'DROP') {
1820
1821 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1822
782c4cde 1823 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1824
1825 ruleset_addrule($ruleset, $chain, "-j DROP");
1826 } elsif ($policy eq 'REJECT') {
1827 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1828
782c4cde 1829 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1830
1831 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1832 } else {
1833 # should not happen
1834 die "internal error: unknown policy '$policy'";
1835 }
1836}
1837
e2943485
DM		 1838sub ruleset_chain_add_conn_filters {
1839 my ($ruleset, $chain, $accept) = @_;
1840
1841 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1842 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1843}
1844
1845sub ruleset_chain_add_input_filters {
88c26d5e 1846 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD		 1847
1848 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 1849 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
1850 ruleset_create_chain($ruleset, "PVEFW-blacklist");
1851 ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel;
1852 ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP");
1853 }
88c26d5e 1854 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
708ba714 1855 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist");
2428e394 1856 }
e2943485
DM		 1857
1858 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1
DM		 1859 if ($ipversion == 4) {
1860 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1861 }
e2943485
DM		 1862 }
1863
1864 if ($options->{tcpflags}) {
1865 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1866 }
1867}
1868
9e15114a 1869sub ruleset_create_vm_chain {
88c26d5e 1870 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 1871
9e15114a 1872 ruleset_create_chain($ruleset, $chain);
b47ecc88 1873 my $accept = generate_nfqueue($options);
3a616aa0 1874
ce15d90b 1875 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1876 if ($direction eq 'OUT') {
88c26d5e
DM		 1877 ruleset_generate_rule($ruleset, $chain, $ipversion,
1878 { action => 'PVEFW-SET-ACCEPT-MARK',
1879 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1880 } else {
88c26d5e
DM		 1881 ruleset_generate_rule($ruleset, $chain, $ipversion,
1882 { action => 'ACCEPT',
1883 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1884 }
ce15d90b
DM		 1885 }
1886
b21aca2c
DM		 1887 if ($direction eq 'OUT') {
1888 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1889 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1890 }
808d711d
DM		 1891 if ($ipfilter_ipset) {
1892 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src -j DROP");
1893 }
9e15114a 1894 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1895 }
9e15114a
DM		 1896}
1897
4bc6b5ac 1898sub ruleset_add_group_rule {
aedde2c2 1899 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 1900
1901 my $group = $rule->{action};
1902 my $group_chain = "GROUP-$group-$direction";
1903 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 1904 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 1905 }
bfc488f6 1906
f8b12fff
DM		 1907 if ($direction eq 'OUT' && $rule->{iface_out}) {
1908 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain");
1909 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1910 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain");
4bc6b5ac
DM		 1911 } else {
1912 ruleset_addrule($ruleset, $chain, "-j $group_chain");
1913 }
1914
1915 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action");
1916}
1917
9e15114a 1918sub ruleset_generate_vm_rules {
84870b1a 1919 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_;
9e15114a
DM		 1920
1921 my $lc_direction = lc($direction);
c29f55c9 1922
6b8ca015
DM		 1923 my $in_accept = generate_nfqueue($options);
1924
92e976b3
DM		 1925 foreach my $rule (@$rules) {
1926 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 1927 next if !$rule->{enable} || $rule->{errors};
006490cb 1928 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 1929
92e976b3 1930 if ($rule->{type} eq 'group') {
4bc6b5ac 1931 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 1932 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 1933 } else {
1934 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1935 eval {
1936 if ($direction eq 'OUT') {
88c26d5e 1937 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
e34d0e58 1938 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
e523d2bb 1939 undef, $cluster_conf, $vmfw_conf);
921dfb33 1940 } else {
88c26d5e 1941 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
e34d0e58 1942 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
e523d2bb 1943 undef, $cluster_conf, $vmfw_conf);
921dfb33
DM		 1944 }
1945 };
1946 warn $@ if $@;
4e6112f9 1947 }
3a616aa0 1948 }
9e15114a
DM		 1949}
1950
b47ecc88
AD		 1951sub generate_nfqueue {
1952 my ($options) = @_;
1953
73089769
DM		 1954 if ($options->{ips}) {
1955 my $action = "NFQUEUE";
1956 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1957 if (defined($3) && defined($1)) {
b47ecc88 1958 $action .= " --queue-balance $1:$3";
73089769 1959 } elsif (defined($1)) {
b47ecc88
AD		 1960 $action .= " --queue-num $1";
1961 }
1962 }
8dc92812 1963 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1964 return $action;
1965 } else {
1966 return "ACCEPT";
b47ecc88 1967 }
b47ecc88
AD		 1968}
1969
da6fc60b 1970sub ruleset_generate_vm_ipsrules {
a01c32c7 1971 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 1972
1973 if ($options->{ips} && $direction eq 'IN') {
1974 my $nfqueue = generate_nfqueue($options);
1975
a01c32c7 1976 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 1977 ruleset_create_chain($ruleset, "PVEFW-IPS");
1978 }
1979
a01c32c7 1980 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
da6fc60b
AD		 1981 }
1982}
1983
9e15114a 1984sub generate_venet_rules_direction {
84870b1a 1985 my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction, $ipversion) = @_;
9e15114a 1986
9e15114a
DM		 1987 my $lc_direction = lc($direction);
1988
1989 my $rules = $vmfw_conf->{rules};
1990
1991 my $options = $vmfw_conf->{options};
1992 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1993
1994 my $chain = "venet0-$vmid-$direction";
1995
88c26d5e 1996 ruleset_create_vm_chain($ruleset, $chain, $ipversion, $options, undef, undef, $direction);
9e15114a 1997
84870b1a 1998 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction, undef, $ipversion);
9e15114a
DM		 1999
2000 # implement policy
2001 my $policy;
2002
2003 if ($direction eq 'OUT') {
2004 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2005 } else {
2006 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
2007 }
2008
b47ecc88
AD		 2009 my $accept = generate_nfqueue($options);
2010 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2011 ruleset_add_chain_policy($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
9e15114a 2012
eba0fb64 2013 if ($direction eq 'OUT') {
88c26d5e 2014 ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", $ipversion, {
eba0fb64
DM		 2015 action => $chain,
2016 source => $ip,
2017 iface_in => 'venet0'});
2018 } else {
88c26d5e 2019 ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", $ipversion, {
eba0fb64
DM		 2020 action => $chain,
2021 dest => $ip,
2022 iface_out => 'venet0'});
2023 }
9e15114a
DM		 2024}
2025
2026sub generate_tap_rules_direction {
84870b1a 2027 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 2028
2029 my $lc_direction = lc($direction);
2030
2031 my $rules = $vmfw_conf->{rules};
2032
2033 my $options = $vmfw_conf->{options};
2034 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2035
2036 my $tapchain = "$iface-$direction";
2037
b692f42c 2038 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2039 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
b692f42c 2040 if $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2041
a34cfdd0 2042 # create chain with mac and ip filter
88c26d5e 2043 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
9e15114a 2044
a34cfdd0 2045 if ($options->{enable}) {
84870b1a 2046 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion);
3a616aa0 2047
a34cfdd0 2048 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2049
a34cfdd0
DM		 2050 # implement policy
2051 my $policy;
ccae0b50 2052
a34cfdd0
DM		 2053 if ($direction eq 'OUT') {
2054 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2055 } else {
72f63fde 2056 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2057 }
ccae0b50 2058
a34cfdd0
DM		 2059 my $accept = generate_nfqueue($options);
2060 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2061 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM		 2062 } else {
2063 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2064 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2065 }
3a616aa0 2066
3fa83edf 2067 # plug the tap chain to bridge chain
3cc81077 2068 if ($direction eq 'IN') {
a01c32c7
DM		 2069 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
2070 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
3cc81077 2071 } else {
a01c32c7
DM		 2072 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
2073 "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain");
3cc81077 2074 }
3a616aa0
AD		 2075}
2076
d18c1e2b 2077sub enable_host_firewall {
aedde2c2 2078 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
0bd5f137 2079
92e976b3 2080 my $options = $hostfw_conf->{options};
63324b09 2081 my $cluster_options = $cluster_conf->{options};
92e976b3 2082 my $rules = $hostfw_conf->{rules};
35f0c37e 2083 my $cluster_rules = $cluster_conf->{rules};
178a63be 2084
3fa83edf 2085 # host inbound firewall
dec84fcd
DM		 2086 my $chain = "PVEFW-HOST-IN";
2087 ruleset_create_chain($ruleset, $chain);
0bd5f137 2088
178a63be
DM		 2089 my $loglevel = get_option_log_level($options, "log_level_in");
2090
e2943485 2091 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
4ac863a6 2092
e2943485 2093 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
88c26d5e 2094 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2095
23e888f8
DM		 2096 # we use RETURN because we need to check also tap rules
2097 my $accept_action = 'RETURN';
2098
cc8dc02f
DM		 2099 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
2100
35f0c37e
DM		 2101 # add host rules first, so that cluster wide rules can be overwritten
2102 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2103 next if !$rule->{enable} || $rule->{errors};
b828ae3d 2104 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2105
f8b12fff 2106 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2107
1a9978ed
DM		 2108 eval {
2109 if ($rule->{type} eq 'group') {
aedde2c2 2110 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2111 } elsif ($rule->{type} eq 'in') {
88c26d5e
DM		 2112 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2113 { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 2114 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 2115 }
2116 };
2117 warn $@ if $@;
f8b12fff 2118 delete $rule->{iface_in};
0bd5f137 2119 }
eb399cef
DM		 2120
2121 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2122 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2123 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
eb399cef 2124 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API
bfc488f6 2125 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
eb399cef
DM		 2126 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
2127 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 2128
077323c3
DM		 2129 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2130 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
3bc79f87 2131
eb399cef 2132 # corosync
b828ae3d 2133 if ($localnet && ($ipversion == $localnet_ver)) {
c5191f57 2134 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7
DM		 2135 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule");
2136 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87 2137 }
0bd5f137 2138
23e888f8 2139 # implement input policy
63324b09 2140 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2141 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2142
3fa83edf 2143 # host outbound firewall
aadd745e 2144 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 2145 ruleset_create_chain($ruleset, $chain);
2146
178a63be
DM		 2147 $loglevel = get_option_log_level($options, "log_level_out");
2148
dec84fcd 2149 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
e2943485
DM		 2150
2151 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2152
23e888f8
DM		 2153 # we use RETURN because we may want to check other thigs later
2154 $accept_action = 'RETURN';
2155
cc8dc02f
DM		 2156 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
2157
35f0c37e
DM		 2158 # add host rules first, so that cluster wide rules can be overwritten
2159 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2160 next if !$rule->{enable} || $rule->{errors};
b828ae3d 2161 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2162
f8b12fff 2163 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed
DM		 2164 eval {
2165 if ($rule->{type} eq 'group') {
aedde2c2 2166 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2167 } elsif ($rule->{type} eq 'out') {
88c26d5e
DM		 2168 ruleset_generate_rule($ruleset, $chain, $ipversion,
2169 $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 2170 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 2171 }
2172 };
2173 warn $@ if $@;
f8b12fff 2174 delete $rule->{iface_out};
0bd5f137
AD		 2175 }
2176
3bc79f87 2177 # allow standard traffic on cluster network
b828ae3d 2178 if ($localnet && ($ipversion == $localnet_ver)) {
525778d7
DM		 2179 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API
2180 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 2181 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
525778d7 2182 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
bfc488f6 2183
c5191f57 2184 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7 2185 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule");
f573ae2c 2186 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87
DM		 2187 }
2188
23e888f8 2189 # implement output policy
63324b09 2190 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2191 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2192
dec84fcd
DM		 2193 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
2194 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 2195}
2196
2197sub generate_group_rules {
aedde2c2 2198 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2199
c6f5cc88 2200 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2201
b4deedab
DM		 2202 if (!$rules) {
2203 warn "no such security group '$group'\n";
2204 $rules = []; # create empty chain
2205 }
2206
3fa83edf 2207 my $chain = "GROUP-${group}-IN";
9d31b418 2208
3fa83edf 2209 ruleset_create_chain($ruleset, $chain);
b47ecc88 2210 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 2211
92e976b3
DM		 2212 foreach my $rule (@$rules) {
2213 next if $rule->{type} ne 'in';
aedde2c2 2214 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
88c26d5e
DM		 2215 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2216 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
2217 undef, $cluster_conf);
9d31b418
AD		 2218 }
2219
3fa83edf 2220 $chain = "GROUP-${group}-OUT";
9d31b418 2221
3fa83edf 2222 ruleset_create_chain($ruleset, $chain);
4e6112f9 2223 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 2224
92e976b3
DM		 2225 foreach my $rule (@$rules) {
2226 next if $rule->{type} ne 'out';
aedde2c2 2227 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2228 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2229 # check also other tap rules later
88c26d5e
DM		 2230 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2231 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" },
2232 undef, $cluster_conf);
9d31b418 2233 }
9d31b418
AD		 2234}
2235
51bae274
DM		 2236my $MAX_NETS = 32;
2237my $valid_netdev_names = {};
2238for (my $i = 0; $i < $MAX_NETS; $i++) {
2239 $valid_netdev_names->{"net$i"} = 1;
2240}
5e1267a5 2241
51bae274 2242sub parse_fw_rule {
a523e057 2243 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
5e1267a5 2244
d4cda423
DM		 2245 my $orig_line = $line;
2246
6d9246e7
DM		 2247 my $rule = {};
2248
11bac5c2 2249 # we can add single line comments to the end of the rule
6d9246e7
DM		 2250 if ($line =~ s/#\s*(.*?)\s*$//) {
2251 $rule->{comment} = decode('utf8', $1);
2252 }
11bac5c2
DM		 2253
2254 # we can disable a rule when prefixed with '|'
ea9e5116 2255
6d9246e7 2256 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2257
dba740a9
DM		 2258 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2259 die "unable to parse rule: $line\n";
6d9246e7
DM		 2260
2261 $rule->{type} = lc($1);
2262 $rule->{action} = $2;
2263
2264 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2265 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2266 $rule->{macro} = $1;
2267 $rule->{action} = $2;
92e976b3 2268 }
51bae274
DM		 2269 }
2270
dba740a9
DM		 2271 while (length($line)) {
2272 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2273 $rule->{iface} = $1;
dba740a9
DM		 2274 next;
2275 }
51bae274 2276
6d9246e7 2277 last if $rule->{type} eq 'group';
51bae274 2278
dba740a9 2279 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2280 $rule->{proto} = $1;
dba740a9
DM		 2281 next;
2282 }
6d9246e7 2283
dba740a9 2284 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2285 $rule->{dport} = $1;
dba740a9
DM		 2286 next;
2287 }
6d9246e7 2288
dba740a9 2289 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2290 $rule->{sport} = $1;
dba740a9
DM		 2291 next;
2292 }
2293 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2294 $rule->{source} = $1;
dba740a9
DM		 2295 next;
2296 }
2297 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2298 $rule->{dest} = $1;
dba740a9
DM		 2299 next;
2300 }
51bae274 2301
dba740a9
DM		 2302 last;
2303 }
ba791b1f 2304
dba740a9 2305 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2306
a523e057 2307 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
d4cda423
DM		 2308 if ($verbose && $rule->{errors}) {
2309 warn "$prefix - errors in rule parameters: $orig_line\n";
2310 foreach my $p (keys %{$rule->{errors}}) {
2311 warn " $p: $rule->{errors}->{$p}\n";
2312 }
2313 }
6d9246e7
DM		 2314
2315 return $rule;
51bae274
DM		 2316}
2317
2d404ffc 2318sub parse_vmfw_option {
85c6eaed
DM		 2319 my ($line) = @_;
2320
2321 my ($opt, $value);
2322
178a63be
DM		 2323 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2324
6bafd113 2325 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2326 $opt = lc($1);
2327 $value = int($2);
178a63be
DM		 2328 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2329 $opt = lc($1);
2330 $value = $2 ? lc($3) : '';
72f63fde 2331 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2332 $opt = lc($1);
2333 $value = uc($3);
b47ecc88
AD		 2334 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2335 $opt = lc($1);
2336 $value = $2;
9c6b6efd 2337 } else {
85c6eaed
DM		 2338 die "can't parse option '$line'\n"
2339 }
2340
2341 return ($opt, $value);
2342}
2343
2d404ffc
DM		 2344sub parse_hostfw_option {
2345 my ($line) = @_;
2346
2347 my ($opt, $value);
2348
2349 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2350
c50a5a68 2351 if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2352 $opt = lc($1);
2353 $value = int($2);
178a63be 2354 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2355 $opt = lc($1);
2356 $value = $2 ? lc($3) : '';
28c082a1 2357 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 2358 $opt = lc($1);
2359 $value = int($2);
2d404ffc 2360 } else {
2d404ffc
DM		 2361 die "can't parse option '$line'\n"
2362 }
2363
2364 return ($opt, $value);
2365}
2366
c6f5cc88
DM		 2367sub parse_clusterfw_option {
2368 my ($line) = @_;
2369
2370 my ($opt, $value);
2371
2372 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
2373 $opt = lc($1);
2374 $value = int($2);
63324b09
DM		 2375 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2376 $opt = lc($1);
2377 $value = uc($3);
c6f5cc88 2378 } else {
c6f5cc88
DM		 2379 die "can't parse option '$line'\n"
2380 }
2381
2382 return ($opt, $value);
2383}
2384
6c221576
DM		 2385sub resolve_alias {
2386 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2387
6d959e3f 2388 my $alias = lc($cidr);
04f5088f 2389 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2390 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2391
6d959e3f
DM		 2392 die "no such alias '$cidr'\n" if !$e;;
2393
2394 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2395}
2396
ae029a88
DM		 2397sub parse_ip_or_cidr {
2398 my ($cidr) = @_;
2399
2400 my $ipversion;
2401
2402 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2403 $cidr =~ s|/128$||;
2404 $ipversion = 6;
2405 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2406 $cidr =~ s|/32$||;
2407 $ipversion = 4;
2408 } else {
2409 die "value does not look like a valid IP address or CIDR network\n";
2410 }
2411
2412 return wantarray ? ($cidr, $ipversion) : $cidr;
2413}
2414
e76a9f53 2415sub parse_alias {
92e1209b
AD		 2416 my ($line) = @_;
2417
81d574a7
DM		 2418 # we can add single line comments to the end of the line
2419 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2420
92e1209b 2421 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2422 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2423 my $ipversion;
2424
2425 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2426
81d574a7
DM		 2427 my $data = {
2428 name => $name,
2429 cidr => $cidr,
70e524eb 2430 ipversion => $ipversion,
81d574a7
DM		 2431 };
2432 $data->{comment} = $comment if $comment;
2433 return $data;
92e1209b
AD		 2434 }
2435
81d574a7 2436 return undef;
92e1209b
AD		 2437}
2438
e5cd1ee0 2439sub generic_fw_config_parser {
1210ae94 2440 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
5e1267a5 2441
51bae274
DM		 2442 my $section;
2443 my $group;
2444
1210ae94 2445 my $res = $empty_conf;
6158271d 2446
51bae274
DM		 2447 while (defined(my $line = <$fh>)) {
2448 next if $line =~ m/^#/;
2449 next if $line =~ m/^\s*$/;
2450
c8c534f7
DM		 2451 chomp $line;
2452
961b4928
DM		 2453 my $linenr = $fh->input_line_number();
2454 my $prefix = "$filename (line $linenr)";
2455
1210ae94 2456 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2457 $section = 'options';
2458 next;
2459 }
2460
1210ae94 2461 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2462 $section = 'aliases';
2463 next;
2464 }
2465
1210ae94 2466 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2467 $section = 'groups';
92e976b3 2468 $group = lc($1);
0d22acb3 2469 my $comment = $2;
351052d1
DM		 2470 eval {
2471 die "security group name too long\n" if length($group) > $max_group_name_length;
2472 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2473 };
2474 if (my $err = $@) {
2475 ($section, $group, $comment) = undef;
2476 warn "$prefix: $err";
2477 next;
2478 }
2479
c85c87f9 2480 $res->{$section}->{$group} = [];
649e4d57
DM		 2481 $res->{group_comments}->{$group} = decode('utf8', $comment)
2482 if $comment;
51bae274
DM		 2483 next;
2484 }
34cdedfa 2485
1210ae94 2486 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2487 $section = 'rules';
2488 next;
2489 }
cbb5d6f3 2490
1210ae94 2491 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2492 $section = 'ipset';
2493 $group = lc($1);
d72c631c 2494 my $comment = $2;
351052d1
DM		 2495 eval {
2496 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2497 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2498 };
2499 if (my $err = $@) {
2500 ($section, $group, $comment) = undef;
2501 warn "$prefix: $err";
2502 next;
2503 }
2504
c85c87f9 2505 $res->{$section}->{$group} = [];
e34d0e58 2506 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2507 if $comment;
34cdedfa
AD		 2508 next;
2509 }
2510
c6f5cc88 2511 if (!$section) {
cbb5d6f3 2512 warn "$prefix: skip line - no section\n";
51bae274
DM		 2513 next;
2514 }
2515
c6f5cc88
DM		 2516 if ($section eq 'options') {
2517 eval {
1210ae94
DM		 2518 my ($opt, $value);
2519 if ($rule_env eq 'cluster') {
2520 ($opt, $value) = parse_clusterfw_option($line);
2521 } elsif ($rule_env eq 'host') {
2522 ($opt, $value) = parse_hostfw_option($line);
2523 } else {
2524 ($opt, $value) = parse_vmfw_option($line);
2525 }
c6f5cc88
DM		 2526 $res->{options}->{$opt} = $value;
2527 };
2528 warn "$prefix: $@" if $@;
92e1209b
AD		 2529 } elsif ($section eq 'aliases') {
2530 eval {
e76a9f53 2531 my $data = parse_alias($line);
81d574a7 2532 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2533 };
2534 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2535 } elsif ($section eq 'rules') {
2536 my $rule;
1210ae94 2537 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
c6f5cc88
DM		 2538 if (my $err = $@) {
2539 warn "$prefix: $err";
2540 next;
2541 }
2542 push @{$res->{$section}}, $rule;
2543 } elsif ($section eq 'groups') {
34cdedfa 2544 my $rule;
1210ae94 2545 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
34cdedfa
AD		 2546 if (my $err = $@) {
2547 warn "$prefix: $err";
2548 next;
2549 }
3f95d14a 2550 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2551 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2552 # we can add single line comments to the end of the rule
2553 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2554
30f1b100 2555 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2556 my $nomatch = $1;
9d6f90e6 2557 my $cidr = $2;
d46b1ef6
DM		 2558 my $errors;
2559
2560 if ($nomatch && !$feature_ipset_nomatch) {
2561 $errors->{nomatch} = "nomatch not supported by kernel";
2562 }
2a052ee3 2563
4803b296
DM		 2564 eval {
2565 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2566 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2567 } else {
ae029a88 2568 $cidr = parse_ip_or_cidr($cidr);
92e1209b 2569 }
4803b296
DM		 2570 };
2571 if (my $err = $@) {
c8c534f7 2572 chomp $err;
d46b1ef6 2573 $errors->{cidr} = $err;
2a052ee3 2574 }
2a052ee3 2575
e34d0e58 2576 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2577 $entry->{nomatch} = 1 if $nomatch;
2578 $entry->{comment} = $comment if $comment;
d46b1ef6 2579 $entry->{errors} = $errors if $errors;
e34d0e58 2580
c8c534f7 2581 if ($verbose && $errors) {
9a3061c7 2582 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 2583 foreach my $p (keys %{$errors}) {
2584 warn " $p: $errors->{$p}\n";
2585 }
2586 }
2587
9d6f90e6 2588 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 2589 } else {
2590 warn "$prefix: skip line - unknown section\n";
2591 next;
51bae274 2592 }
5e1267a5
DM		 2593 }
2594
2595 return $res;
2596}
2597
e5cd1ee0 2598sub parse_hostfw_config {
1210ae94
DM		 2599 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2600
2601 my $empty_conf = { rules => [], options => {}};
2602
e5cd1ee0 2603 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
1210ae94
DM		 2604}
2605
e5cd1ee0 2606sub parse_vmfw_config {
1210ae94
DM		 2607 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2608
2609 my $empty_conf = {
2610 rules => [],
2611 options => {},
2612 aliases => {},
2613 ipset => {} ,
2614 ipset_comments => {},
2615 };
2616
e5cd1ee0 2617 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
1210ae94
DM		 2618}
2619
e5cd1ee0 2620sub parse_clusterfw_config {
1210ae94
DM		 2621 my ($filename, $fh, $verbose) = @_;
2622
2623 my $section;
2624 my $group;
2625
2626 my $empty_conf = {
2627 rules => [],
2628 options => {},
2629 aliases => {},
2630 groups => {},
2631 group_comments => {},
2632 ipset => {} ,
2633 ipset_comments => {},
2634 };
2635
e5cd1ee0 2636 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
1210ae94
DM		 2637}
2638
06320eb0
DM		 2639sub run_locked {
2640 my ($code, @param) = @_;
2641
2642 my $timeout = 10;
2643
2644 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2645
2646 die $@ if $@;
2647
2648 return $res;
2649}
2650
5e1267a5
DM		 2651sub read_local_vm_config {
2652
2653 my $openvz = {};
5e1267a5
DM		 2654 my $qemu = {};
2655
c8301d63 2656 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2657
c8301d63
DM		 2658 my $vmlist = PVE::Cluster::get_vmlist();
2659 return $vmdata if !$vmlist || !$vmlist->{ids};
2660 my $ids = $vmlist->{ids};
2661
2662 foreach my $vmid (keys %$ids) {
2663 next if !$vmid; # skip VE0
2664 my $d = $ids->{$vmid};
2665 next if !$d->{node} || $d->{node} ne $nodename;
2666 next if !$d->{type};
2667 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2668 if ($have_pve_manager) {
2669 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2670 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2671 $openvz->{$vmid} = $conf;
2672 }
c8301d63
DM		 2673 }
2674 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2675 if ($have_qemu_server) {
2676 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2677 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2678 $qemu->{$vmid} = $conf;
2679 }
c8301d63 2680 }
5e1267a5
DM		 2681 }
2682 }
d9fee004 2683
5e1267a5
DM		 2684 return $vmdata;
2685};
2686
e7b35711 2687sub load_vmfw_conf {
a523e057 2688 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
e7b35711
DM		 2689
2690 my $vmfw_conf = {};
2691
21053409 2692 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177
DM		 2693
2694 my $filename = "$dir/$vmid.fw";
e7b35711 2695 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2696 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
708ba714 2697 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 2698 }
2699
2700 return $vmfw_conf;
2701}
2702
464f933e 2703my $format_rules = sub {
dba740a9 2704 my ($rules, $allow_iface) = @_;
464f933e
DM		 2705
2706 my $raw = '';
2707
2708 foreach my $rule (@$rules) {
c14dacdf 2709 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2710 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2711 $raw .= uc($rule->{type});
7ca36671
DM		 2712 if ($rule->{macro}) {
2713 $raw .= " $rule->{macro}($rule->{action})";
2714 } else {
2715 $raw .= " " . $rule->{action};
2716 }
dba740a9
DM		 2717 if ($allow_iface && $rule->{iface}) {
2718 $raw .= " -i $rule->{iface}";
2719 }
c14dacdf
DM		 2720
2721 if ($rule->{type} ne 'group') {
dba740a9
DM		 2722 $raw .= " -source $rule->{source}" if $rule->{source};
2723 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2724 $raw .= " -p $rule->{proto}" if $rule->{proto};
2725 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2726 $raw .= " -sport $rule->{sport}" if $rule->{sport};
c14dacdf
DM		 2727 }
2728
cbb5d6f3 2729 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2730 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2731 $raw .= "\n";
2732 } else {
c14dacdf 2733 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2734 }
2735 }
2736
2737 return $raw;
2738};
2739
2740my $format_options = sub {
68c90e21
DM		 2741 my ($options) = @_;
2742
2743 my $raw = '';
464f933e
DM		 2744
2745 $raw .= "[OPTIONS]\n\n";
2746 foreach my $opt (keys %$options) {
2747 $raw .= "$opt: $options->{$opt}\n";
2748 }
2749 $raw .= "\n";
68c90e21
DM		 2750
2751 return $raw;
464f933e
DM		 2752};
2753
0d5f0a0f
DM		 2754my $format_aliases = sub {
2755 my ($aliases) = @_;
2756
2757 my $raw = '';
2758
2759 $raw .= "[ALIASES]\n\n";
2760 foreach my $k (keys %$aliases) {
81d574a7
DM		 2761 my $e = $aliases->{$k};
2762 $raw .= "$e->{name} $e->{cidr}";
2763 $raw .= " # " . encode('utf8', $e->{comment})
2764 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2765 $raw .= "\n";
0d5f0a0f
DM		 2766 }
2767 $raw .= "\n";
2768
2769 return $raw;
2770};
2771
1210ae94
DM		 2772my $format_ipsets = sub {
2773 my ($fw_conf) = @_;
2774
9d6f90e6
DM		 2775 my $raw = '';
2776
1210ae94
DM		 2777 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
2778 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
2779 my $utf8comment = encode('utf8', $comment);
2780 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2781 } else {
2782 $raw .= "[IPSET $ipset]\n\n";
2783 }
2784 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 2785
1210ae94
DM		 2786 my $nethash = {};
2787 foreach my $entry (@$options) {
2788 $nethash->{$entry->{cidr}} = $entry;
2789 }
2790
2791 foreach my $cidr (sort keys %$nethash) {
2792 my $entry = $nethash->{$cidr};
2793 my $line = $entry->{nomatch} ? '!' : '';
2794 $line .= $entry->{cidr};
2795 $line .= " # " . encode('utf8', $entry->{comment})
2796 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2797 $raw .= "$line\n";
2798 }
2799
2800 $raw .= "\n";
9d6f90e6 2801 }
e34d0e58 2802
9d6f90e6
DM		 2803 return $raw;
2804};
2805
464f933e
DM		 2806sub save_vmfw_conf {
2807 my ($vmid, $vmfw_conf) = @_;
2808
2809 my $raw = '';
2810
2811 my $options = $vmfw_conf->{options};
89ea63c8 2812 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 2813
e76a9f53 2814 my $aliases = $vmfw_conf->{aliases};
89ea63c8 2815 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 2816
89ea63c8 2817 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 2818
8824b2f0 2819 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 2820 if ($rules && scalar(@$rules)) {
464f933e
DM		 2821 $raw .= "[RULES]\n\n";
2822 $raw .= &$format_rules($rules, 1);
2823 $raw .= "\n";
2824 }
2825
21053409
DM		 2826 mkdir $pvefw_conf_dir;
2827
2828 my $filename = "$pvefw_conf_dir/$vmid.fw";
464f933e
DM		 2829 PVE::Tools::file_set_contents($filename, $raw);
2830}
2831
6fc63ffd 2832sub read_vm_firewall_configs {
a523e057 2833 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
8aef5177 2834
6fc63ffd 2835 my $vmfw_configs = {};
c8301d63 2836
b6b8e6ad 2837 foreach my $vmid (keys %{$vmdata->{qemu}}) {
a523e057 2838 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
b6b8e6ad
DM		 2839 next if !$vmfw_conf->{options}; # skip if file does not exists
2840 $vmfw_configs->{$vmid} = $vmfw_conf;
2841 }
2842 foreach my $vmid (keys %{$vmdata->{openvz}}) {
a523e057 2843 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
e7b35711
DM		 2844 next if !$vmfw_conf->{options}; # skip if file does not exists
2845 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2846 }
2847
6fc63ffd 2848 return $vmfw_configs;
5e1267a5
DM		 2849}
2850
2d404ffc
DM		 2851sub get_option_log_level {
2852 my ($options, $k) = @_;
2853
2854 my $v = $options->{$k};
178a63be 2855 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2856
2857 return undef if $v eq '' || $v eq 'nolog';
2858
2859 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2860
2861 return $v if ($v >= 0) && ($v <= 7);
2862
2863 warn "unknown log level ($k = '$v')\n";
2864
2865 return undef;
2866}
2867
d8f2505e 2868sub generate_std_chains {
db8a955f
DM		 2869 my ($ruleset, $options, $ipversion) = @_;
2870
2871 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 2872
2d404ffc
DM		 2873 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2874
db8a955f 2875 my $chain;
782c4cde 2876
db8a955f
DM		 2877 if ($ipversion == 4) {
2878 # same as shorewall smurflog.
2879 $chain = 'PVEFW-smurflog';
2880 $std_chains->{$chain} = [];
2881
2882 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2883 push @{$std_chains->{$chain}}, "-j DROP";
2884 }
2d404ffc
DM		 2885
2886 # same as shorewall logflags action.
2887 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2888 $chain = 'PVEFW-logflags';
db8a955f 2889 $std_chains->{$chain} = [];
12f3796e 2890
782c4cde 2891 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
db8a955f
DM		 2892 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2893 push @{$std_chains->{$chain}}, "-j DROP";
d8f2505e 2894
db8a955f 2895 foreach my $chain (keys %$std_chains) {
d8f2505e 2896 ruleset_create_chain($ruleset, $chain);
db8a955f 2897 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e 2898 if (ref($rule)) {
88c26d5e 2899 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
d8f2505e
DM		 2900 } else {
2901 ruleset_addrule($ruleset, $chain, $rule);
2902 }
2903 }
2904 }
2905}
2906
34cdedfa 2907sub generate_ipset_chains {
88c26d5e 2908 my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_; #fixme
34cdedfa 2909
dd7a13fd 2910 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
34cdedfa 2911
88c26d5e 2912 my $options = $fw_conf->{ipset}->{$ipset};
34cdedfa 2913
88c26d5e
DM		 2914 # remove duplicates
2915 my $nethash = {};
2916 foreach my $entry (@$options) {
2917 next if $entry->{errors}; # skip entries with errors
2918 eval {
2919 my ($cidr, $ver);
2920 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
2921 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
2922 } else {
2923 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
2924 }
2925 #http://backreference.org/2013/03/01/ipv6-address-normalization/
2926 if ($ver == 6) {
2927 my $ipv6 = inet_pton(AF_INET6, lc($cidr));
2928 $cidr = inet_ntop(AF_INET6, $ipv6);
2929 $cidr =~ s|/128$||;
2930 } else {
2931 $cidr =~ s|/32$||;
2932 }
34cdedfa 2933
88c26d5e
DM		 2934 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
2935 };
2936 warn $@ if $@;
2937 }
6d959e3f 2938
88c26d5e
DM		 2939 foreach my $ipversion (4, 6) {
2940 my $data = $nethash->{$ipversion};
30f1b100 2941
88c26d5e 2942 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
6d959e3f 2943
88c26d5e
DM		 2944 my $hashsize = scalar(@$options);
2945 if ($hashsize <= 64) {
2946 $hashsize = 64;
2947 } else {
2948 $hashsize = round_powerof2($hashsize);
2949 }
6d959e3f 2950
88c26d5e 2951 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 2952
88c26d5e 2953 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
6d959e3f 2954
88c26d5e
DM		 2955 foreach my $cidr (sort keys %$data) {
2956 my $entry = $data->{$cidr};
6d959e3f 2957
88c26d5e
DM		 2958 my $cmd = "add $name $cidr";
2959 if ($entry->{nomatch}) {
2960 if ($feature_ipset_nomatch) {
2961 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2962 } else {
2963 warn "ignore !$cidr - nomatch not supported by kernel\n";
2964 }
6d959e3f 2965 } else {
88c26d5e 2966 push @{$ipset_ruleset->{$name}}, $cmd;
6d959e3f 2967 }
9d6f90e6 2968 }
9d6f90e6 2969 }
34cdedfa 2970 }
2a052ee3
AD		 2971}
2972
2973sub round_powerof2 {
dd7a13fd 2974 my ($int) = @_;
2a052ee3 2975
dd7a13fd
DM		 2976 $int--;
2977 $int |= $int >> $_ foreach (1,2,4,8,16);
2978 return ++$int;
34cdedfa
AD		 2979}
2980
fca39c2c 2981sub load_clusterfw_conf {
d4cda423 2982 my ($filename, $verbose) = @_;
8aef5177
DM		 2983
2984 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 2985
fca39c2c 2986 my $cluster_conf = {};
8aef5177 2987 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2988 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
51bae274 2989 }
5e1267a5 2990
fca39c2c 2991 return $cluster_conf;
e5d76bde
DM		 2992}
2993
fca39c2c
DM		 2994sub save_clusterfw_conf {
2995 my ($cluster_conf) = @_;
9c7e0858
DM		 2996
2997 my $raw = '';
9c7e0858 2998
c6f5cc88 2999 my $options = $cluster_conf->{options};
89ea63c8 3000 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 3001
0d5f0a0f 3002 my $aliases = $cluster_conf->{aliases};
89ea63c8 3003 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 3004
89ea63c8 3005 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
1210ae94 3006
c6f5cc88 3007 my $rules = $cluster_conf->{rules};
89ea63c8 3008 if ($rules && scalar(@$rules)) {
c6f5cc88 3009 $raw .= "[RULES]\n\n";
63c91681 3010 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 3011 $raw .= "\n";
3012 }
3013
89ea63c8
DM		 3014 if ($cluster_conf->{groups}) {
3015 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3016 my $rules = $cluster_conf->{groups}->{$group};
3017 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3018 my $utf8comment = encode('utf8', $comment);
3019 $raw .= "[group $group] # $utf8comment\n\n";
3020 } else {
3021 $raw .= "[group $group]\n\n";
3022 }
0d22acb3 3023
89ea63c8
DM		 3024 $raw .= &$format_rules($rules, 0);
3025 $raw .= "\n";
3026 }
9c7e0858
DM		 3027 }
3028
21053409 3029 mkdir $pvefw_conf_dir;
fca39c2c 3030 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 3031}
3032
8b27beb9 3033sub load_hostfw_conf {
a523e057 3034 my ($cluster_conf, $filename, $verbose) = @_;
8aef5177
DM		 3035
3036 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 3037
3038 my $hostfw_conf = {};
8aef5177 3039 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3040 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
8b27beb9
DM		 3041 }
3042 return $hostfw_conf;
3043}
3044
63c91681
DM		 3045sub save_hostfw_conf {
3046 my ($hostfw_conf) = @_;
3047
3048 my $raw = '';
3049
3050 my $options = $hostfw_conf->{options};
89ea63c8 3051 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3052
63c91681 3053 my $rules = $hostfw_conf->{rules};
89ea63c8 3054 if ($rules && scalar(@$rules)) {
63c91681
DM		 3055 $raw .= "[RULES]\n\n";
3056 $raw .= &$format_rules($rules, 1);
3057 $raw .= "\n";
3058 }
3059
3060 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3061}
3062
e5d76bde 3063sub compile {
d4cda423 3064 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3dfa8a7f 3065
8aef5177
DM		 3066 my $vmfw_configs;
3067
3068 if ($vmdata) { # test mode
3069 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3070 my $filename = "$testdir/cluster.fw";
d4cda423 3071 $cluster_conf = load_clusterfw_conf($filename, $verbose);
8aef5177
DM		 3072
3073 $filename = "$testdir/host.fw";
a523e057 3074 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
8aef5177 3075
a523e057 3076 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
8aef5177 3077 } else { # normal operation
d4cda423 3078 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
8aef5177 3079
a523e057 3080 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
8aef5177
DM		 3081
3082 $vmdata = read_local_vm_config();
a523e057 3083 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
8aef5177 3084 }
3dfa8a7f 3085
9268573a 3086 my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
638c755a
AD		 3087 my ($rulesetv6) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose);
3088
3089 return ($ruleset, $ipset_ruleset, $rulesetv6);
9268573a
AD		 3090}
3091
3092sub compile_iptables_filter {
3093 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
3094
27083984 3095 $cluster_conf->{ipset}->{venet0} = [];
88c26d5e 3096 my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0', $ipversion);
bfc488f6 3097
525778d7
DM		 3098 my $localnet;
3099 if ($cluster_conf->{aliases}->{local_network}) {
3100 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3101 } else {
077323c3
DM		 3102 my $localnet_ver;
3103 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3104
3105 $cluster_conf->{aliases}->{local_network} = {
3106 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
525778d7
DM		 3107 }
3108
3109 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 3110
085fd492
DM		 3111 return ({}, {}) if !$cluster_conf->{options}->{enable};
3112
3fa83edf
DM		 3113 my $ruleset = {};
3114
dec84fcd
DM		 3115 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3116 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 3117
fadb13dd 3118 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 3119
8b27beb9 3120 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 3121
88733a74
AD		 3122 # fixme: what log level should we use here?
3123 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3124
097820b0 3125 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 3126
708ba714 3127
e2943485 3128 ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
708ba714
DM		 3129 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
3130 ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
e2943485
DM		 3131
3132 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
88c26d5e 3133 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3134
d1b41c08 3135 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
e2943485
DM		 3136
3137 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
d1b41c08 3138 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
e2943485
DM		 3139
3140 ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
88c26d5e 3141 ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3142
708ba714 3143 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
e2943485 3144
db8a955f 3145 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 3146
6d2ab017 3147 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 3148
708ba714
DM		 3149 my $ipset_ruleset = {};
3150
b828ae3d 3151 if ($hostfw_enable) {
aedde2c2 3152 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
1a9978ed
DM		 3153 warn $@ if $@; # just to be sure - should not happen
3154 }
3fa83edf 3155
708ba714 3156 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
62689a1e 3157
6158271d 3158 # generate firewall rules for QEMU VMs
3fa83edf 3159 foreach my $vmid (keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 3160 eval {
3161 my $conf = $vmdata->{qemu}->{$vmid};
3162 my $vmfw_conf = $vmfw_configs->{$vmid};
3163 return if !$vmfw_conf;
1a9978ed 3164
708ba714
DM		 3165 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3166
1a9978ed
DM		 3167 foreach my $netid (keys %$conf) {
3168 next if $netid !~ m/^net(\d+)$/;
3169 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3170 next if !$net->{firewall};
3171 my $iface = "tap${vmid}i$1";
3172
3173 my $macaddr = $net->{macaddr};
3174 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3175 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3176 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3177 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3178 }
3179 };
3180 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3181 }
c8301d63
DM		 3182
3183 # generate firewall rules for OpenVZ containers
3184 foreach my $vmid (keys %{$vmdata->{openvz}}) {
1a9978ed
DM		 3185 eval {
3186 my $conf = $vmdata->{openvz}->{$vmid};
c8301d63 3187
1a9978ed
DM		 3188 my $vmfw_conf = $vmfw_configs->{$vmid};
3189 return if !$vmfw_conf;
c8301d63 3190
708ba714
DM		 3191 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3192
a34cfdd0
DM		 3193 if ($vmfw_conf->{options}->{enable}) {
3194 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
3195 my $ip = $conf->{ip_address}->{value};
3196 $ip =~ s/\s+/,/g;
27083984 3197
b33ce1b5 3198 my @ips = ();
27083984 3199
b33ce1b5
DM		 3200 foreach my $singleip (split(',', $ip)) {
3201 my $singleip_ver = parse_address_list($singleip); # make sure we have a valid $ip list
3202 push @{$cluster_conf->{ipset}->{venet0}}, { cidr => $singleip };
3203 push @ips, $singleip if $singleip_ver == $ipversion;
a34cfdd0 3204 }
c8301d63 3205
b33ce1b5
DM		 3206 if (scalar(@ips)) {
3207 my $ip_list = join(',', @ips);
3208 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip_list, 'IN', $ipversion);
3209 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip_list, 'OUT', $ipversion);
3210 }
a34cfdd0 3211 }
1a9978ed 3212 }
530c005e 3213
1a9978ed
DM		 3214 if ($conf->{netif} && $conf->{netif}->{value}) {
3215 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
3216 foreach my $netid (keys %$netif) {
3217 my $d = $netif->{$netid};
a34cfdd0
DM		 3218 my $bridge = $d->{bridge};
3219 next if !$bridge || $bridge !~ m/^vmbr\d+(v(\d+))?f$/; # firewall enabled ?
1a9978ed
DM		 3220 my $macaddr = $d->{mac};
3221 my $iface = $d->{host_ifname};
3222 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3223 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3224 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3225 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed 3226 }
c8301d63 3227 }
1a9978ed
DM		 3228 };
3229 warn $@ if $@; # just to be sure - should not happen
c8301d63 3230 }
c0413e35 3231
097820b0
AD		 3232 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
3233 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
3234 }
3235
708ba714 3236 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
27083984 3237
3dfa8a7f 3238 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 3239}
3240
3241sub get_ruleset_status {
4bd0a9c4 3242 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 3243
3244 my $statushash = {};
3245
3246 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 3247 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 3248
3fa83edf
DM		 3249 $statushash->{$chain}->{sig} = $sig;
3250
3251 my $oldsig = $active_chains->{$chain};
3252 if (!defined($oldsig)) {
3253 $statushash->{$chain}->{action} = 'create';
3254 } else {
3255 if ($oldsig eq $sig) {
3256 $statushash->{$chain}->{action} = 'exists';
3257 } else {
3258 $statushash->{$chain}->{action} = 'update';
3259 }
3260 }
3261 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
3262 foreach my $cmd (@{$ruleset->{$chain}}) {
3263 print "\t$cmd\n" if $verbose;
3264 }
3265 }
3266
3267 foreach my $chain (sort keys %$active_chains) {
3268 if (!defined($ruleset->{$chain})) {
3269 my $sig = $active_chains->{$chain};
3270 $statushash->{$chain}->{action} = 'delete';
3271 $statushash->{$chain}->{sig} = $sig;
3272 print "delete $chain ($sig)\n" if $verbose;
3273 }
6158271d 3274 }
2a052ee3 3275
3fa83edf
DM		 3276 return $statushash;
3277}
3278
3fa83edf
DM		 3279sub print_sig_rule {
3280 my ($chain, $sig) = @_;
3281
09d5f68e
DM		 3282 # We just use this to store a SHA1 checksum used to detect changes
3283 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 3284}
3285
df7cb349 3286sub get_ruleset_cmdlist {
17da5c0f 3287 my ($ruleset, $verbose, $iptablescmd) = @_;
3fa83edf 3288
3fa83edf 3289 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 3290
17da5c0f 3291 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
4bd0a9c4 3292 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 3293
3294 # create missing chains first
3295 foreach my $chain (sort keys %$ruleset) {
3296 my $stat = $statushash->{$chain};
3297 die "internal error" if !$stat;
3298 next if $stat->{action} ne 'create';
886aba9c 3299
3fa83edf
DM		 3300 $cmdlist .= ":$chain - [0:0]\n";
3301 }
3302
4bd0a9c4 3303 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
55fad3b7
DM		 3304 my $chain = "PVEFW-$h";
3305 if ($ruleset->{$chain} && !$hooks->{$h}) {
3306 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 3307 }
3fa83edf
DM		 3308 }
3309
3310 foreach my $chain (sort keys %$ruleset) {
3311 my $stat = $statushash->{$chain};
3312 die "internal error" if !$stat;
3313
3314 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
3315 $cmdlist .= "-F $chain\n";
3316 foreach my $cmd (@{$ruleset->{$chain}}) {
3317 $cmdlist .= "$cmd\n";
3318 }
3319 $cmdlist .= print_sig_rule($chain, $stat->{sig});
3320 } elsif ($stat->{action} eq 'delete') {
f5d28682 3321 die "internal error"; # this should not happen
3fa83edf
DM		 3322 } elsif ($stat->{action} eq 'exists') {
3323 # do nothing
3324 } else {
3325 die "internal error - unknown status '$stat->{action}'";
3326 }
3327 }
3328
f5d28682
DM		 3329 foreach my $chain (keys %$statushash) {
3330 next if $statushash->{$chain}->{action} ne 'delete';
3331 $cmdlist .= "-F $chain\n";
3332 }
3333 foreach my $chain (keys %$statushash) {
3334 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 3335 next if $chain eq 'PVEFW-INPUT';
3336 next if $chain eq 'PVEFW-OUTPUT';
3337 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 3338 $cmdlist .= "-X $chain\n";
3339 }
3340
3f95d14a 3341 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 3342
3fa83edf
DM		 3343 $cmdlist .= "COMMIT\n";
3344
3f95d14a 3345 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 3346}
3347
34cdedfa 3348sub get_ipset_cmdlist {
dd7a13fd 3349 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 3350
3351 my $cmdlist = "";
3352
dd7a13fd
DM		 3353 my $delete_cmdlist = "";
3354
4bd0a9c4
DM		 3355 my $active_chains = ipset_get_chains();
3356 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 3357
e34d0e58 3358 # remove stale _swap chains
30f1b100
DM		 3359 foreach my $chain (keys %$active_chains) {
3360 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3361 $cmdlist .= "destroy $chain\n";
3362 }
3363 }
3364
c69cf614 3365 foreach my $chain (keys %$ruleset) {
c69cf614
DM		 3366 my $stat = $statushash->{$chain};
3367 die "internal error" if !$stat;
3368
3369 if ($stat->{action} eq 'create') {
3370 foreach my $cmd (@{$ruleset->{$chain}}) {
3371 $cmdlist .= "$cmd\n";
3372 }
3373 }
3374 }
3375
3376 foreach my $chain (keys %$ruleset) {
6d959e3f
DM		 3377 my $stat = $statushash->{$chain};
3378 die "internal error" if !$stat;
34cdedfa 3379
dd7a13fd
DM		 3380 if ($stat->{action} eq 'update') {
3381 my $chain_swap = $chain."_swap";
cbb5d6f3 3382
dd7a13fd
DM		 3383 foreach my $cmd (@{$ruleset->{$chain}}) {
3384 $cmd =~ s/$chain/$chain_swap/;
3385 $cmdlist .= "$cmd\n";
34cdedfa 3386 }
dd7a13fd
DM		 3387 $cmdlist .= "swap $chain_swap $chain\n";
3388 $cmdlist .= "flush $chain_swap\n";
3389 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 3390 }
dd7a13fd 3391 }
3f95d14a 3392
88c26d5e 3393 # the remove unused chains
c69cf614 3394 foreach my $chain (keys %$statushash) {
dd7a13fd 3395 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 3396
dd7a13fd
DM		 3397 $delete_cmdlist .= "flush $chain\n";
3398 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 3399 }
3400
dd7a13fd 3401 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 3402
dd7a13fd 3403 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 3404}
3405
6b9f68a2 3406sub apply_ruleset {
17da5c0f 3407 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $verbose) = @_;
6b9f68a2
DM		 3408
3409 enable_bridge_firewall();
3410
cbb5d6f3 3411 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 3412 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 3413
81a0bf43 3414 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
17da5c0f 3415 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables");
2a052ee3 3416
81a0bf43
DM		 3417 if ($verbose) {
3418 if ($ipset_changes) {
3419 print "ipset changes:\n";
3420 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3421 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3422 }
3f95d14a 3423
81a0bf43
DM		 3424 if ($changes) {
3425 print "iptables changes:\n";
3426 print $cmdlist;
3427 }
17da5c0f
AD		 3428
3429 if ($changesv6) {
3430 print "ip6tables changes:\n";
3431 print $cmdlistv6;
3432 }
81a0bf43 3433 }
3fa83edf 3434
259db1e6
DM		 3435 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
3436 PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
3437
2a052ee3 3438 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 3439
259db1e6
DM		 3440 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
3441 PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
3442
3fa83edf 3443 iptables_restore_cmdlist($cmdlist);
259db1e6
DM		 3444
3445 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
3446 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
3447
17da5c0f 3448 ip6tables_restore_cmdlist($cmdlistv6);
3fa83edf 3449
259db1e6
DM		 3450 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
3451 PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
3452
dd7a13fd 3453 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 3454
6158271d 3455 # test: re-read status and check if everything is up to date
4bd0a9c4 3456 my $active_chains = iptables_get_chains();
81a0bf43 3457 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 3458
3459 my $errors;
3460 foreach my $chain (sort keys %$ruleset) {
3461 my $stat = $statushash->{$chain};
3462 if ($stat->{action} ne 'exists') {
3463 warn "unable to update chain '$chain'\n";
3464 $errors = 1;
3465 }
3466 }
b6360c3f 3467
17da5c0f
AD		 3468 my $active_chainsv6 = iptables_get_chains("ip6tables");
3469 my $statushashv6 = get_ruleset_status($rulesetv6, $active_chainsv6, \&iptables_chain_digest, 0);
3470
3471 foreach my $chain (sort keys %$rulesetv6) {
3472 my $stat = $statushashv6->{$chain};
3473 if ($stat->{action} ne 'exists') {
3474 warn "unable to update chain '$chain'\n";
3475 $errors = 1;
3476 }
3477 }
3478
3fa83edf 3479 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 3480
3481 update_nf_conntrack_max($hostfw_conf);
3482
3483 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
3484
b6360c3f
DM		 3485}
3486
490cdead
DM		 3487sub update_nf_conntrack_max {
3488 my ($hostfw_conf) = @_;
3489
3490 my $max = 65536; # reasonable default
3491
3492 my $options = $hostfw_conf->{options} || {};
3493
3494 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
3495 $max = $options->{nf_conntrack_max};
3496 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3497 }
3498
3499 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3500 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3501
3502 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
3503
3504 if ($current != $max) {
3505 my $hashsize = int($max/4);
3506 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
3507 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
3508 }
3509}
3510
28c082a1
AD		 3511sub update_nf_conntrack_tcp_timeout_established {
3512 my ($hostfw_conf) = @_;
3513
3514 my $options = $hostfw_conf->{options} || {};
3515
3516 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
3517
3518 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3519}
3520
c4a2e5ae
DM		 3521sub remove_pvefw_chains {
3522
7b7b2654
AD		 3523 PVE::Firewall::remove_pvefw_chains_iptables("iptables");
3524 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
3525 PVE::Firewall::remove_pvefw_chains_ipset();
3526
3527}
3528
3529sub remove_pvefw_chains_iptables {
3530 my ($iptablescmd) = @_;
3531
3532 my ($chash, $hooks) = iptables_get_chains($iptablescmd);
c4a2e5ae
DM		 3533 my $cmdlist = "*filter\n";
3534
3535 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3536 if ($hooks->{$h}) {
3537 $cmdlist .= "-D $h -j PVEFW-$h\n";
3538 }
3539 }
cbb5d6f3 3540
c4a2e5ae
DM		 3541 foreach my $chain (keys %$chash) {
3542 $cmdlist .= "-F $chain\n";
3543 }
3544
3545 foreach my $chain (keys %$chash) {
3546 $cmdlist .= "-X $chain\n";
3547 }
3548 $cmdlist .= "COMMIT\n";
3549
7b7b2654
AD		 3550 if($iptablescmd eq "ip6tables") {
3551 ip6tables_restore_cmdlist($cmdlist);
3552 } else {
3553 iptables_restore_cmdlist($cmdlist);
3554 }
3555}
3556
3557sub remove_pvefw_chains_ipset {
55fad3b7
DM		 3558
3559 my $ipset_chains = ipset_get_chains();
3560
7b7b2654 3561 my $cmdlist = "";
55fad3b7
DM		 3562
3563 foreach my $chain (keys %$ipset_chains) {
88c26d5e
DM		 3564 $cmdlist .= "flush $chain\n";
3565 $cmdlist .= "destroy $chain\n";
55fad3b7
DM		 3566 }
3567
7b7b2654 3568 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 3569}
3570
8b453a09
DM		 3571sub init {
3572 my $cluster_conf = load_clusterfw_conf();
3573 my $cluster_options = $cluster_conf->{options};
3574 my $enable = $cluster_options->{enable};
3575
3576 return if !$enable;
3577
3578 # load required modules here
3579}
3580
6b9f68a2 3581sub update {
6b9f68a2 3582 my $code = sub {
3dfa8a7f
DM		 3583
3584 my $cluster_conf = load_clusterfw_conf();
3585 my $cluster_options = $cluster_conf->{options};
3586
55fad3b7 3587 if (!$cluster_options->{enable}) {
b22130d3 3588 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 3589 return;
3590 }
3591
50f9a28d 3592 my $hostfw_conf = load_hostfw_conf($cluster_conf);
3dfa8a7f 3593
638c755a 3594 my ($ruleset, $ipset_ruleset, $rulesetv6) = compile($cluster_conf, $hostfw_conf);
490cdead 3595
17da5c0f 3596 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6);
6b9f68a2
DM		 3597 };
3598
3599 run_locked($code);
3600}
3601
b6360c3f 36021;
Firewall test scripts