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add support for ipfilter ipset
[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;
c8301d63 8use PVE::INotify;
7ca36671 9use PVE::Exception qw(raise raise_param_exc);
e74a87f5 10use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 11use PVE::Cluster;
5f0a912c 12use PVE::ProcFSTools;
009ee3ac 13use PVE::Tools qw($IPV4RE);
6b9f68a2 14use File::Basename;
5e1267a5
DM		 15use File::Path;
16use IO::File;
ecbea048 17use Net::IP;
1a301a8d 18use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 19use Encode;
ecbea048 20
63c91681 21my $hostfw_conf_filename = "/etc/pve/local/host.fw";
21053409
DM		 22my $pvefw_conf_dir = "/etc/pve/firewall";
23my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
fca39c2c 24
cbb5d6f3 25# dynamically include PVE::QemuServer and PVE::OpenVZ
d9fee004
DM		 26# to avoid dependency problems
27my $have_qemu_server;
28eval {
29 require PVE::QemuServer;
30 $have_qemu_server = 1;
31};
32
33my $have_pve_manager;
34eval {
35 require PVE::OpenVZ;
36 $have_pve_manager = 1;
37};
38
351052d1
DM		 39my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
40my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
41my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
42
43my $max_alias_name_length = 64;
44my $max_ipset_name_length = 64;
45my $max_group_name_length = 20;
46
009ee3ac
DM		 47PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr);
48sub pve_verify_ipv4_or_cidr {
49 my ($cidr, $noerr) = @_;
50
30f1b100 51 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
e34d0e58 52 return $cidr if Net::IP->new($cidr);
7c619bbb
DM		 53 return undef if $noerr;
54 die Net::IP::Error() . "\n";
55 }
56 return undef if $noerr;
57 die "value does not look like a valid IP address or CIDR network\n";
58}
59
60PVE::JSONSchema::register_format('IPv4orCIDRorAlias', \&pve_verify_ipv4_or_cidr_or_alias);
61sub pve_verify_ipv4_or_cidr_or_alias {
62 my ($cidr, $noerr) = @_;
63
64 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
65
66 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
67 return $cidr if Net::IP->new($cidr);
30f1b100
DM		 68 return undef if $noerr;
69 die Net::IP::Error() . "\n";
009ee3ac
DM		 70 }
71 return undef if $noerr;
72 die "value does not look like a valid IP address or CIDR network\n";
73}
74
e74a87f5
DM		 75PVE::JSONSchema::register_standard_option('ipset-name', {
76 description => "IP set name.",
77 type => 'string',
351052d1 78 pattern => $ipset_name_pattern,
387d0ffc 79 minLength => 2,
351052d1 80 maxLength => $max_ipset_name_length,
387d0ffc
DM		 81});
82
81d574a7
DM		 83PVE::JSONSchema::register_standard_option('pve-fw-alias', {
84 description => "Alias name.",
85 type => 'string',
351052d1 86 pattern => $ip_alias_pattern,
81d574a7 87 minLength => 2,
351052d1 88 maxLength => $max_alias_name_length,
81d574a7
DM		 89});
90
6302c41f
DM		 91PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
92 description => "Log level.",
e34d0e58 93 type => 'string',
6302c41f
DM		 94 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
95 optional => 1,
96});
97
387d0ffc
DM		 98PVE::JSONSchema::register_standard_option('pve-security-group-name', {
99 description => "Security Group name.",
100 type => 'string',
44be8ceb 101 pattern => $security_group_name_pattern,
387d0ffc 102 minLength => 2,
351052d1 103 maxLength => $max_group_name_length,
e74a87f5 104});
009ee3ac 105
cbb5d6f3
DM		 106my $feature_ipset_nomatch = 0;
107eval {
108 my (undef, undef, $release) = POSIX::uname();
109 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
110 my ($major, $minor) = ($1, $2);
111 $feature_ipset_nomatch = 1 if ($major > 3) ||
112 ($major == 3 && $minor >= 7);
113 }
114
115};
116
5e1267a5 117use Data::Dumper;
b6360c3f 118
c8301d63
DM		 119my $nodename = PVE::INotify::nodename();
120
06320eb0
DM		 121my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
122
56f313f7 123my $default_log_level = 'nolog'; # avoid logs by default
2d404ffc
DM		 124
125my $log_level_hash = {
126 debug => 7,
127 info => 6,
128 notice => 5,
129 warning => 4,
130 err => 3,
131 crit => 2,
132 alert => 1,
133 emerg => 0,
134};
135
857f62c8 136# imported/converted from: /usr/share/shorewall/macro.*
961b4928 137my $pve_fw_macros = {
857f62c8 138 'Amanda' => [
ebd54ae9 139 "Amanda Backup",
857f62c8
DM		 140 { action => 'PARAM', proto => 'udp', dport => '10080' },
141 { action => 'PARAM', proto => 'tcp', dport => '10080' },
142 ],
143 'Auth' => [
ebd54ae9 144 "Auth (identd) traffic",
857f62c8
DM		 145 { action => 'PARAM', proto => 'tcp', dport => '113' },
146 ],
147 'BGP' => [
ebd54ae9 148 "Border Gateway Protocol traffic",
857f62c8
DM		 149 { action => 'PARAM', proto => 'tcp', dport => '179' },
150 ],
151 'BitTorrent' => [
ebd54ae9 152 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 153 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 154 { action => 'PARAM', proto => 'udp', dport => '6881' },
155 ],
156 'BitTorrent32' => [
ebd54ae9 157 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 158 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
159 { action => 'PARAM', proto => 'udp', dport => '6881' },
160 ],
161 'CVS' => [
ebd54ae9 162 "Concurrent Versions System pserver traffic",
857f62c8
DM		 163 { action => 'PARAM', proto => 'tcp', dport => '2401' },
164 ],
165 'Citrix' => [
ebd54ae9 166 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 167 { action => 'PARAM', proto => 'tcp', dport => '1494' },
168 { action => 'PARAM', proto => 'udp', dport => '1604' },
169 { action => 'PARAM', proto => 'tcp', dport => '2598' },
170 ],
171 'DAAP' => [
ebd54ae9 172 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 173 { action => 'PARAM', proto => 'tcp', dport => '3689' },
174 { action => 'PARAM', proto => 'udp', dport => '3689' },
175 ],
176 'DCC' => [
ebd54ae9 177 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 178 { action => 'PARAM', proto => 'tcp', dport => '6277' },
179 ],
180 'DHCPfwd' => [
d2c3266d 181 "Forwarded DHCP traffic",
857f62c8 182 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 183 ],
184 'DNS' => [
ebd54ae9 185 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 186 { action => 'PARAM', proto => 'udp', dport => '53' },
187 { action => 'PARAM', proto => 'tcp', dport => '53' },
188 ],
189 'Distcc' => [
ebd54ae9 190 "Distributed Compiler service",
857f62c8
DM		 191 { action => 'PARAM', proto => 'tcp', dport => '3632' },
192 ],
857f62c8 193 'FTP' => [
ebd54ae9 194 "File Transfer Protocol",
857f62c8
DM		 195 { action => 'PARAM', proto => 'tcp', dport => '21' },
196 ],
197 'Finger' => [
ebd54ae9 198 "Finger protocol (RFC 742)",
857f62c8
DM		 199 { action => 'PARAM', proto => 'tcp', dport => '79' },
200 ],
201 'GNUnet' => [
ebd54ae9 202 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 203 { action => 'PARAM', proto => 'tcp', dport => '2086' },
204 { action => 'PARAM', proto => 'udp', dport => '2086' },
205 { action => 'PARAM', proto => 'tcp', dport => '1080' },
206 { action => 'PARAM', proto => 'udp', dport => '1080' },
207 ],
208 'GRE' => [
d2c3266d 209 "Generic Routing Encapsulation tunneling protocol",
857f62c8 210 { action => 'PARAM', proto => '47' },
857f62c8
DM		 211 ],
212 'Git' => [
ebd54ae9 213 "Git distributed revision control traffic",
857f62c8
DM		 214 { action => 'PARAM', proto => 'tcp', dport => '9418' },
215 ],
857f62c8 216 'HKP' => [
ebd54ae9 217 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 218 { action => 'PARAM', proto => 'tcp', dport => '11371' },
219 ],
220 'HTTP' => [
ebd54ae9 221 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 222 { action => 'PARAM', proto => 'tcp', dport => '80' },
223 ],
857f62c8 224 'HTTPS' => [
ebd54ae9 225 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 226 { action => 'PARAM', proto => 'tcp', dport => '443' },
227 ],
228 'ICPV2' => [
ebd54ae9 229 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 230 { action => 'PARAM', proto => 'udp', dport => '3130' },
231 ],
232 'ICQ' => [
ebd54ae9 233 "AOL Instant Messenger traffic",
857f62c8
DM		 234 { action => 'PARAM', proto => 'tcp', dport => '5190' },
235 ],
236 'IMAP' => [
ebd54ae9 237 "Internet Message Access Protocol",
857f62c8
DM		 238 { action => 'PARAM', proto => 'tcp', dport => '143' },
239 ],
240 'IMAPS' => [
ebd54ae9 241 "Internet Message Access Protocol over SSL",
857f62c8
DM		 242 { action => 'PARAM', proto => 'tcp', dport => '993' },
243 ],
244 'IPIP' => [
d2c3266d 245 "IPIP capsulation traffic",
857f62c8 246 { action => 'PARAM', proto => '94' },
857f62c8 247 ],
857f62c8 248 'IPsec' => [
d2c3266d 249 "IPsec traffic",
857f62c8
DM		 250 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
251 { action => 'PARAM', proto => '50' },
857f62c8
DM		 252 ],
253 'IPsecah' => [
d2c3266d 254 "IPsec authentication (AH) traffic",
857f62c8
DM		 255 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
256 { action => 'PARAM', proto => '51' },
857f62c8
DM		 257 ],
258 'IPsecnat' => [
d2c3266d 259 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 260 { action => 'PARAM', proto => 'udp', dport => '500' },
261 { action => 'PARAM', proto => 'udp', dport => '4500' },
262 { action => 'PARAM', proto => '50' },
857f62c8
DM		 263 ],
264 'IRC' => [
ebd54ae9 265 "Internet Relay Chat traffic",
857f62c8
DM		 266 { action => 'PARAM', proto => 'tcp', dport => '6667' },
267 ],
857f62c8 268 'Jetdirect' => [
ebd54ae9 269 "HP Jetdirect printing",
857f62c8
DM		 270 { action => 'PARAM', proto => 'tcp', dport => '9100' },
271 ],
272 'L2TP' => [
ebd54ae9 273 "Layer 2 Tunneling Protocol traffic",
857f62c8 274 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 275 ],
276 'LDAP' => [
ebd54ae9 277 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 278 { action => 'PARAM', proto => 'tcp', dport => '389' },
279 ],
280 'LDAPS' => [
ebd54ae9 281 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 282 { action => 'PARAM', proto => 'tcp', dport => '636' },
283 ],
284 'MSNP' => [
ebd54ae9 285 "Microsoft Notification Protocol",
857f62c8
DM		 286 { action => 'PARAM', proto => 'tcp', dport => '1863' },
287 ],
288 'MSSQL' => [
ebd54ae9 289 "Microsoft SQL Server",
857f62c8
DM		 290 { action => 'PARAM', proto => 'tcp', dport => '1433' },
291 ],
292 'Mail' => [
ebd54ae9 293 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 294 { action => 'PARAM', proto => 'tcp', dport => '25' },
295 { action => 'PARAM', proto => 'tcp', dport => '465' },
296 { action => 'PARAM', proto => 'tcp', dport => '587' },
297 ],
298 'Munin' => [
ebd54ae9 299 "Munin networked resource monitoring traffic",
857f62c8
DM		 300 { action => 'PARAM', proto => 'tcp', dport => '4949' },
301 ],
302 'MySQL' => [
ebd54ae9 303 "MySQL server",
857f62c8
DM		 304 { action => 'PARAM', proto => 'tcp', dport => '3306' },
305 ],
306 'NNTP' => [
ebd54ae9 307 "NNTP traffic (Usenet).",
857f62c8
DM		 308 { action => 'PARAM', proto => 'tcp', dport => '119' },
309 ],
310 'NNTPS' => [
ebd54ae9 311 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 312 { action => 'PARAM', proto => 'tcp', dport => '563' },
313 ],
314 'NTP' => [
ebd54ae9 315 "Network Time Protocol (ntpd)",
857f62c8
DM		 316 { action => 'PARAM', proto => 'udp', dport => '123' },
317 ],
857f62c8 318 'OSPF' => [
ebd54ae9 319 "OSPF multicast traffic",
857f62c8
DM		 320 { action => 'PARAM', proto => '89' },
321 ],
322 'OpenVPN' => [
ebd54ae9 323 "OpenVPN traffic",
857f62c8
DM		 324 { action => 'PARAM', proto => 'udp', dport => '1194' },
325 ],
326 'PCA' => [
ebd54ae9 327 "Symantec PCAnywere (tm)",
857f62c8
DM		 328 { action => 'PARAM', proto => 'udp', dport => '5632' },
329 { action => 'PARAM', proto => 'tcp', dport => '5631' },
330 ],
331 'POP3' => [
ebd54ae9 332 "POP3 traffic",
857f62c8
DM		 333 { action => 'PARAM', proto => 'tcp', dport => '110' },
334 ],
335 'POP3S' => [
ebd54ae9 336 "Encrypted POP3 traffic",
857f62c8
DM		 337 { action => 'PARAM', proto => 'tcp', dport => '995' },
338 ],
339 'PPtP' => [
ebd54ae9 340 "Point-to-Point Tunneling Protocol",
857f62c8 341 { action => 'PARAM', proto => '47' },
857f62c8
DM		 342 { action => 'PARAM', proto => 'tcp', dport => '1723' },
343 ],
344 'Ping' => [
ebd54ae9 345 "ICMP echo request",
269d4f13 346 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 347 ],
348 'PostgreSQL' => [
ebd54ae9 349 "PostgreSQL server",
857f62c8
DM		 350 { action => 'PARAM', proto => 'tcp', dport => '5432' },
351 ],
352 'Printer' => [
ebd54ae9 353 "Line Printer protocol printing",
857f62c8
DM		 354 { action => 'PARAM', proto => 'tcp', dport => '515' },
355 ],
356 'RDP' => [
ebd54ae9 357 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 358 { action => 'PARAM', proto => 'tcp', dport => '3389' },
359 ],
d2c3266d 360 'RIP' => [
ebd54ae9 361 "Routing Information Protocol (bidirectional)",
857f62c8 362 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 363 ],
364 'RNDC' => [
ebd54ae9 365 "BIND remote management protocol",
857f62c8
DM		 366 { action => 'PARAM', proto => 'tcp', dport => '953' },
367 ],
368 'Razor' => [
ebd54ae9 369 "Razor Antispam System",
857f62c8
DM		 370 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
371 ],
372 'Rdate' => [
ebd54ae9 373 "Remote time retrieval (rdate)",
857f62c8
DM		 374 { action => 'PARAM', proto => 'tcp', dport => '37' },
375 ],
376 'Rsync' => [
ebd54ae9 377 "Rsync server",
857f62c8
DM		 378 { action => 'PARAM', proto => 'tcp', dport => '873' },
379 ],
380 'SANE' => [
ebd54ae9 381 "SANE network scanning",
857f62c8
DM		 382 { action => 'PARAM', proto => 'tcp', dport => '6566' },
383 ],
384 'SMB' => [
ebd54ae9 385 "Microsoft SMB traffic",
857f62c8
DM		 386 { action => 'PARAM', proto => 'udp', dport => '135,445' },
387 { action => 'PARAM', proto => 'udp', dport => '137:139' },
388 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
389 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
390 ],
857f62c8 391 'SMBswat' => [
ebd54ae9 392 "Samba Web Administration Tool",
857f62c8
DM		 393 { action => 'PARAM', proto => 'tcp', dport => '901' },
394 ],
395 'SMTP' => [
ebd54ae9 396 "Simple Mail Transfer Protocol",
857f62c8
DM		 397 { action => 'PARAM', proto => 'tcp', dport => '25' },
398 ],
399 'SMTPS' => [
ebd54ae9 400 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 401 { action => 'PARAM', proto => 'tcp', dport => '465' },
402 ],
403 'SNMP' => [
ebd54ae9 404 "Simple Network Management Protocol",
857f62c8
DM		 405 { action => 'PARAM', proto => 'udp', dport => '161:162' },
406 { action => 'PARAM', proto => 'tcp', dport => '161' },
407 ],
408 'SPAMD' => [
ebd54ae9 409 "Spam Assassin SPAMD traffic",
857f62c8
DM		 410 { action => 'PARAM', proto => 'tcp', dport => '783' },
411 ],
412 'SSH' => [
ebd54ae9 413 "Secure shell traffic",
857f62c8
DM		 414 { action => 'PARAM', proto => 'tcp', dport => '22' },
415 ],
416 'SVN' => [
ebd54ae9 417 "Subversion server (svnserve)",
857f62c8
DM		 418 { action => 'PARAM', proto => 'tcp', dport => '3690' },
419 ],
420 'SixXS' => [
ebd54ae9 421 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 422 { action => 'PARAM', proto => 'tcp', dport => '3874' },
423 { action => 'PARAM', proto => 'udp', dport => '3740' },
424 { action => 'PARAM', proto => '41' },
425 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
426 ],
427 'Squid' => [
ebd54ae9 428 "Squid web proxy traffic",
857f62c8
DM		 429 { action => 'PARAM', proto => 'tcp', dport => '3128' },
430 ],
431 'Submission' => [
ebd54ae9 432 "Mail message submission traffic",
857f62c8
DM		 433 { action => 'PARAM', proto => 'tcp', dport => '587' },
434 ],
435 'Syslog' => [
ebd54ae9 436 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 437 { action => 'PARAM', proto => 'udp', dport => '514' },
438 { action => 'PARAM', proto => 'tcp', dport => '514' },
439 ],
440 'TFTP' => [
ebd54ae9 441 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 442 { action => 'PARAM', proto => 'udp', dport => '69' },
443 ],
444 'Telnet' => [
ebd54ae9 445 "Telnet traffic",
857f62c8
DM		 446 { action => 'PARAM', proto => 'tcp', dport => '23' },
447 ],
448 'Telnets' => [
ebd54ae9 449 "Telnet over SSL",
857f62c8
DM		 450 { action => 'PARAM', proto => 'tcp', dport => '992' },
451 ],
452 'Time' => [
ebd54ae9 453 "RFC 868 Time protocol",
857f62c8
DM		 454 { action => 'PARAM', proto => 'tcp', dport => '37' },
455 ],
456 'Trcrt' => [
ebd54ae9 457 "Traceroute (for up to 30 hops) traffic",
857f62c8 458 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 459 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 460 ],
461 'VNC' => [
93be4333
DM		 462 "VNC traffic for VNC display's 0 - 99",
463 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 464 ],
465 'VNCL' => [
ebd54ae9 466 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 467 { action => 'PARAM', proto => 'tcp', dport => '5500' },
468 ],
469 'Web' => [
ebd54ae9 470 "WWW traffic (HTTP and HTTPS)",
857f62c8 471 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 472 { action => 'PARAM', proto => 'tcp', dport => '443' },
473 ],
857f62c8 474 'Webcache' => [
ebd54ae9 475 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 476 { action => 'PARAM', proto => 'tcp', dport => '8080' },
477 ],
478 'Webmin' => [
ebd54ae9 479 "Webmin traffic",
857f62c8
DM		 480 { action => 'PARAM', proto => 'tcp', dport => '10000' },
481 ],
482 'Whois' => [
ebd54ae9 483 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 484 { action => 'PARAM', proto => 'tcp', dport => '43' },
485 ],
961b4928
DM		 486};
487
488my $pve_fw_parsed_macros;
ebd54ae9 489my $pve_fw_macro_descr;
961b4928 490my $pve_fw_preferred_macro_names = {};
3a616aa0 491
d8f2505e
DM		 492my $pve_std_chains = {
493 'PVEFW-SET-ACCEPT-MARK' => [
494 "-j MARK --set-mark 1",
495 ],
79929d9c
DM		 496 'PVEFW-DropBroadcast' => [
497 # same as shorewall 'Broadcast'
498 # simply DROP BROADCAST/MULTICAST/ANYCAST
499 # we can use this to reduce logging
500 { action => 'DROP', dsttype => 'BROADCAST' },
501 { action => 'DROP', dsttype => 'MULTICAST' },
502 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 503 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 504 ],
505 'PVEFW-reject' => [
506 # same as shorewall 'reject'
507 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 508 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 509 { action => 'DROP', proto => 'icmp' },
510 "-p tcp -j REJECT --reject-with tcp-reset",
511 "-p udp -j REJECT --reject-with icmp-port-unreachable",
512 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
513 "-j REJECT --reject-with icmp-host-prohibited",
514 ],
515 'PVEFW-Drop' => [
cbb5d6f3 516 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 517 # but REJECT/DROP some packages to reduce logging,
518 # and ACCEPT critical ICMP types
519 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
520 # we are not interested in BROADCAST/MULTICAST/ANYCAST
521 { action => 'PVEFW-DropBroadcast' },
522 # ACCEPT critical ICMP types
523 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
524 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
525 # Drop packets with INVALID state
526 "-m conntrack --ctstate INVALID -j DROP",
527 # Drop Microsoft SMB noise
528 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
529 { action => 'DROP', proto => 'udp', dport => '137:139'},
530 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
531 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
532 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
533 # Drop new/NotSyn traffic so that it doesn't get logged
534 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
535 # Drop DNS replies
536 { action => 'DROP', proto => 'udp', sport => 53 },
537 ],
538 'PVEFW-Reject' => [
cbb5d6f3 539 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 540 # but REJECT/DROP some packages to reduce logging,
541 # and ACCEPT critical ICMP types
542 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
543 # we are not interested in BROADCAST/MULTICAST/ANYCAST
544 { action => 'PVEFW-DropBroadcast' },
545 # ACCEPT critical ICMP types
546 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
547 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
548 # Drop packets with INVALID state
549 "-m conntrack --ctstate INVALID -j DROP",
550 # Drop Microsoft SMB noise
551 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
552 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
553 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
554 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
555 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
556 # Drop new/NotSyn traffic so that it doesn't get logged
557 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
558 # Drop DNS replies
559 { action => 'DROP', proto => 'udp', sport => 53 },
560 ],
d86659ef
DM		 561 'PVEFW-tcpflags' => [
562 # same as shorewall tcpflags action.
563 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
564 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
565 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
566 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
567 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
568 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
569 ],
bee633ab
DM		 570 'PVEFW-smurfs' => [
571 # same as shorewall smurfs action
572 # Filter packets for smurfs (packets with a broadcast address as the source).
573 "-s 0.0.0.0/32 -j RETURN",
574 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
575 "-s 224.0.0.0/4 -g PVEFW-smurflog",
576 ],
d8f2505e
DM		 577};
578
4b586518
DM		 579# iptables -p icmp -h
580my $icmp_type_names = {
581 any => 1,
582 'echo-reply' => 1,
583 'destination-unreachable' => 1,
584 'network-unreachable' => 1,
585 'host-unreachable' => 1,
586 'protocol-unreachable' => 1,
587 'port-unreachable' => 1,
588 'fragmentation-needed' => 1,
589 'source-route-failed' => 1,
590 'network-unknown' => 1,
591 'host-unknown' => 1,
592 'network-prohibited' => 1,
593 'host-prohibited' => 1,
594 'TOS-network-unreachable' => 1,
595 'TOS-host-unreachable' => 1,
596 'communication-prohibited' => 1,
597 'host-precedence-violation' => 1,
598 'precedence-cutoff' => 1,
599 'source-quench' => 1,
600 'redirect' => 1,
601 'network-redirect' => 1,
602 'host-redirect' => 1,
603 'TOS-network-redirect' => 1,
604 'TOS-host-redirect' => 1,
605 'echo-request' => 1,
606 'router-advertisement' => 1,
607 'router-solicitation' => 1,
608 'time-exceeded' => 1,
609 'ttl-zero-during-transit' => 1,
610 'ttl-zero-during-reassembly' => 1,
611 'parameter-problem' => 1,
612 'ip-header-bad' => 1,
613 'required-option-missing' => 1,
614 'timestamp-request' => 1,
615 'timestamp-reply' => 1,
616 'address-mask-request' => 1,
617 'address-mask-reply' => 1,
618};
619
54cd19a8 620sub init_firewall_macros {
6158271d 621
961b4928 622 $pve_fw_parsed_macros = {};
9aab3127 623
961b4928 624 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 625 my $lc_name = lc($k);
626 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 627 if (!ref($macro->[0])) {
628 $pve_fw_macro_descr->{$k} = shift @$macro;
629 }
e5076eee
DM		 630 $pve_fw_preferred_macro_names->{$lc_name} = $k;
631 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 632 }
9aab3127
DM		 633}
634
54cd19a8
DM		 635init_firewall_macros();
636
ebd54ae9
DM		 637sub get_macros {
638 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
639}
640
fcba0beb
DM		 641my $etc_services;
642
643sub get_etc_services {
644
645 return $etc_services if $etc_services;
646
647 my $filename = "/etc/services";
648
649 my $fh = IO::File->new($filename, O_RDONLY);
650 if (!$fh) {
651 warn "unable to read '$filename' - $!\n";
652 return {};
653 }
654
655 my $services = {};
656
657 while (my $line = <$fh>) {
658 chomp ($line);
659 next if $line =~m/^#/;
660 next if ($line =~m/^\s*$/);
661
662 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
663 $services->{byid}->{$2}->{name} = $1;
35b66e9d 664 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 665 $services->{byid}->{$2}->{$3} = 1;
666 $services->{byname}->{$1} = $services->{byid}->{$2};
667 }
668 }
669
670 close($fh);
671
6158271d
DM		 672 $etc_services = $services;
673
3a616aa0 674
fcba0beb
DM		 675 return $etc_services;
676}
677
678my $etc_protocols;
679
680sub get_etc_protocols {
681 return $etc_protocols if $etc_protocols;
682
683 my $filename = "/etc/protocols";
684
685 my $fh = IO::File->new($filename, O_RDONLY);
686 if (!$fh) {
687 warn "unable to read '$filename' - $!\n";
688 return {};
689 }
690
691 my $protocols = {};
692
693 while (my $line = <$fh>) {
694 chomp ($line);
695 next if $line =~m/^#/;
696 next if ($line =~m/^\s*$/);
697
698 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
699 $protocols->{byid}->{$2}->{name} = $1;
700 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
701 }
702 }
703
704 close($fh);
705
706 $etc_protocols = $protocols;
707
708 return $etc_protocols;
709}
710
525778d7 711my $ipv4_mask_hash_localnet = {
93be4333
DM		 712 '255.255.0.0' => 16,
713 '255.255.128.0' => 17,
714 '255.255.192.0' => 18,
715 '255.255.224.0' => 19,
716 '255.255.240.0' => 20,
717 '255.255.248.0' => 21,
718 '255.255.252.0' => 22,
719 '255.255.254.0' => 23,
720 '255.255.255.0' => 24,
721 '255.255.255.128' => 25,
722 '255.255.255.192' => 26,
723 '255.255.255.224' => 27,
724 '255.255.255.240' => 28,
725 '255.255.255.248' => 29,
726 '255.255.255.252' => 30,
727};
728
525778d7 729my $__local_network;
93be4333 730
525778d7 731sub local_network {
ac633d30 732 my ($new_value) = @_;
93be4333 733
525778d7 734 $__local_network = $new_value if defined($new_value);
ac633d30 735
525778d7 736 return $__local_network if defined($__local_network);
93be4333
DM		 737
738 eval {
739 my $nodename = PVE::INotify::nodename();
740
741 my $ip = PVE::Cluster::remote_node_ip($nodename);
742
743 my $testip = Net::IP->new($ip);
bfc488f6 744
93be4333
DM		 745 my $routes = PVE::ProcFSTools::read_proc_net_route();
746 foreach my $entry (@$routes) {
525778d7 747 my $mask = $ipv4_mask_hash_localnet->{$entry->{mask}};
93be4333
DM		 748 next if !defined($mask);
749 return if $mask eq '0.0.0.0';
750 my $cidr = "$entry->{dest}/$mask";
751 my $testnet = Net::IP->new($cidr);
752 if ($testnet->overlaps($testip)) {
525778d7 753 $__local_network = $cidr;
93be4333
DM		 754 return;
755 }
756 }
757 };
758 warn $@ if $@;
759
525778d7 760 return $__local_network;
93be4333
DM		 761}
762
e2c62733 763my $max_iptables_ipset_name_length = 27;
708ba714
DM		 764
765sub compute_ipset_chain_name {
766 my ($vmid, $ipset_name) = @_;
767
768 $vmid = 0 if !defined($vmid);
769
770 my $id = "$vmid-${ipset_name}";
771
772
e2c62733 773 if ((length($id) + 6) > $max_iptables_ipset_name_length) {
708ba714
DM		 774 $id = PVE::Tools::fnv31a_hex($id);
775 }
776
777 return "PVEFW-$id";
778}
779
ecbea048
DM		 780sub parse_address_list {
781 my ($str) = @_;
782
e2c62733
DM		 783 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
784 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
785 return;
786 }
787
788 if ($str =~ m/^${ip_alias_pattern}$/) {
789 die "alias name too long\n" if length($str) > $max_alias_name_length;
790 return;
791 }
d72beb8e 792
3162af6b
DM		 793 my $count = 0;
794 my $iprange = 0;
795 foreach my $elem (split(/,/, $str)) {
796 $count++;
797 if (!Net::IP->new($elem)) {
ecbea048
DM		 798 my $err = Net::IP::Error();
799 die "invalid IP address: $err\n";
800 }
3162af6b 801 $iprange = 1 if $elem =~ m/-/;
ecbea048 802 }
e34d0e58 803
3162af6b 804 die "you can use a range in a list\n" if $iprange && $count > 1;
ecbea048 805}
dddd9413 806
fcba0beb
DM		 807sub parse_port_name_number_or_range {
808 my ($str) = @_;
809
810 my $services = PVE::Firewall::get_etc_services();
7ca36671 811 my $count = 0;
041b7e8e
DM		 812 my $icmp_port = 0;
813
fcba0beb 814 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 815 $count++;
816 if ($item =~ m/^(\d+):(\d+)$/) {
817 my ($port1, $port2) = ($1, $2);
818 die "invalid port '$port1'\n" if $port1 > 65535;
819 die "invalid port '$port2'\n" if $port2 > 65535;
820 } elsif ($item =~ m/^(\d+)$/) {
821 my $port = $1;
822 die "invalid port '$port'\n" if $port > 65535;
823 } else {
041b7e8e
DM		 824 if ($icmp_type_names->{$item}) {
825 $icmp_port = 1;
826 } else {
e34d0e58 827 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 828 }
fcba0beb
DM		 829 }
830 }
831
041b7e8e
DM		 832 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
833
7ca36671 834 return $count;
fcba0beb
DM		 835}
836
54cd19a8
DM		 837PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
838sub pve_fw_verify_port_spec {
839 my ($portstr) = @_;
840
7ca36671 841 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 842
843 return $portstr;
844}
845
846PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec);
847sub pve_fw_verify_v4addr_spec {
848 my ($list) = @_;
849
850 parse_address_list($list);
851
852 return $list;
853}
854
855PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
856sub pve_fw_verify_protocol_spec {
857 my ($proto) = @_;
858
859 my $protocols = get_etc_protocols();
860
861 die "unknown protocol '$proto'\n" if $proto &&
862 !(defined($protocols->{byname}->{$proto}) ||
863 defined($protocols->{byid}->{$proto}));
864
865 return $proto;
866}
867
868
d1c53b3e 869# helper function for API
d1c53b3e 870
5d38d64f
DM		 871sub copy_opject_with_digest {
872 my ($object) = @_;
873
874 my $sha = Digest::SHA->new('sha1');
875
876 my $res = {};
877 foreach my $k (sort keys %$object) {
878 my $v = $object->{$k};
0365eb68 879 next if !defined($v);
5d38d64f
DM		 880 $res->{$k} = $v;
881 $sha->add($k, ':', $v, "\n");
882 }
883
55e686c7 884 my $digest = $sha->hexdigest;
5d38d64f
DM		 885
886 $res->{digest} = $digest;
887
888 return wantarray ? ($res, $digest) : $res;
889}
890
891sub copy_list_with_digest {
892 my ($list) = @_;
893
894 my $sha = Digest::SHA->new('sha1');
895
896 my $res = [];
897 foreach my $entry (@$list) {
898 my $data = {};
899 foreach my $k (sort keys %$entry) {
900 my $v = $entry->{$k};
0365eb68 901 next if !defined($v);
5d38d64f 902 $data->{$k} = $v;
6d9246e7
DM		 903 # Note: digest ignores refs ($rule->{errors})
904 $sha->add($k, ':', $v, "\n") if !ref($v); ;
5d38d64f
DM		 905 }
906 push @$res, $data;
907 }
908
55e686c7 909 my $digest = $sha->hexdigest;
5d38d64f
DM		 910
911 foreach my $entry (@$res) {
912 $entry->{digest} = $digest;
913 }
914
915 return wantarray ? ($res, $digest) : $res;
916}
917
9c7e0858
DM		 918my $rule_properties = {
919 pos => {
920 description => "Update rule at position <pos>.",
921 type => 'integer',
922 minimum => 0,
923 optional => 1,
924 },
c71e785f 925 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 926 type => {
927 type => 'string',
928 optional => 1,
929 enum => ['in', 'out', 'group'],
930 },
931 action => {
c14dacdf 932 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 933 type => 'string',
934 optional => 1,
44be8ceb 935 pattern => $security_group_name_pattern,
c14dacdf
DM		 936 maxLength => 20,
937 minLength => 2,
9c7e0858 938 },
e5076eee
DM		 939 macro => {
940 type => 'string',
941 optional => 1,
54cd19a8 942 maxLength => 128,
e5076eee 943 },
54cd19a8 944 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 945 source => {
54cd19a8 946 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 947 optional => 1,
948 },
949 dest => {
54cd19a8 950 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 951 optional => 1,
952 },
953 proto => {
54cd19a8 954 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 955 optional => 1,
956 },
957 enable => {
958 type => 'boolean',
959 optional => 1,
960 },
961 sport => {
54cd19a8 962 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 963 optional => 1,
964 },
965 dport => {
54cd19a8 966 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 967 optional => 1,
968 },
969 comment => {
970 type => 'string',
971 optional => 1,
972 },
973};
974
975sub add_rule_properties {
976 my ($properties) = @_;
977
978 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 979 my $h = $rule_properties->{$k};
980 # copy data, so that we can modify later without side effects
981 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 982 }
cbb5d6f3 983
9c7e0858
DM		 984 return $properties;
985}
986
5b7974df
DM		 987sub delete_rule_properties {
988 my ($rule, $delete_str) = @_;
e34d0e58 989
5b7974df
DM		 990 foreach my $opt (PVE::Tools::split_list($delete_str)) {
991 raise_param_exc({ 'delete' => "no such property ('$opt')"})
992 if !defined($rule_properties->{$opt});
993 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
994 if $opt eq 'type' || $opt eq 'action';
995 delete $rule->{$opt};
996 }
997
998 return $rule;
999}
1000
9a2745a0
DM		 1001my $apply_macro = sub {
1002 my ($macro_name, $param, $verify) = @_;
1003
1004 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1005 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1006
1007 my $rules = [];
1008
1009 foreach my $templ (@$macro_rules) {
1010 my $rule = {};
1011 my $param_used = {};
1012 foreach my $k (keys %$templ) {
1013 my $v = $templ->{$k};
1014 if ($v eq 'PARAM') {
1015 $v = $param->{$k};
1016 $param_used->{$k} = 1;
1017 } elsif ($v eq 'DEST') {
1018 $v = $param->{dest};
1019 $param_used->{dest} = 1;
1020 } elsif ($v eq 'SOURCE') {
1021 $v = $param->{source};
1022 $param_used->{source} = 1;
1023 }
1024
1025 if (!defined($v)) {
1026 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1027 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1028 die "$msg\n";
1029 }
1030 $rule->{$k} = $v;
1031 }
1032 foreach my $k (keys %$param) {
1033 next if $k eq 'macro';
1034 next if !defined($param->{$k});
1035 next if $param_used->{$k};
1036 if (defined($rule->{$k})) {
1037 if ($rule->{$k} ne $param->{$k}) {
1038 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1039 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1040 die "$msg\n";
1041 }
1042 } else {
1043 $rule->{$k} = $param->{$k};
1044 }
1045 }
1046 push @$rules, $rule;
1047 }
1048
1049 return $rules;
1050};
1051
b6b8e6ad
DM		 1052my $rule_env_iface_lookup = {
1053 'ct' => 1,
1054 'vm' => 1,
1055 'group' => 0,
1056 'cluster' => 1,
1057 'host' => 1,
1058};
1059
7ca36671 1060sub verify_rule {
a523e057 1061 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1062
1063 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1064
b6b8e6ad
DM		 1065 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1066 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1067
a523e057
DM		 1068 my $errors = $rule->{errors} || {};
1069
6d9246e7 1070 my $error_count = 0;
7ca36671 1071
6d9246e7
DM		 1072 my $add_error = sub {
1073 my ($param, $msg) = @_;
d4cda423 1074 chomp $msg;
6d9246e7
DM		 1075 raise_param_exc({ $param => $msg }) if !$noerr;
1076 $error_count++;
1077 $errors->{$param} = $msg if !$errors->{$param};
1078 };
1079
a523e057
DM		 1080 my $check_ipset_or_alias_property = sub {
1081 my ($name) = @_;
1082
1083 if (my $value = $rule->{$name}) {
1084 if ($value =~ m/^\+/) {
4dfe04e6 1085 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1086 &$add_error($name, "no such ipset '$1'")
a523e057 1087 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1088
a523e057 1089 } else {
351052d1 1090 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1091 }
1092 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1093 my $alias = lc($value);
bfc488f6 1094 &$add_error($name, "no such alias '$value'")
a523e057
DM		 1095 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}))
1096 }
1097 }
1098 };
1099
6d9246e7
DM		 1100 my $type = $rule->{type};
1101 my $action = $rule->{action};
bfc488f6 1102
6d9246e7
DM		 1103 &$add_error('type', "missing property") if !$type;
1104 &$add_error('action', "missing property") if !$action;
1105
1106 if ($type) {
1107 if ($type eq 'in' || $type eq 'out') {
1108 &$add_error('action', "unknown action '$action'")
1109 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1110 } elsif ($type eq 'group') {
1111 &$add_error('type', "security groups not allowed")
1112 if !$allow_groups;
1113 &$add_error('action', "invalid characters in security group name")
1114 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1115 } else {
1116 &$add_error('type', "unknown rule type '$type'");
1117 }
7ca36671 1118 }
e34d0e58 1119
dba740a9 1120 if ($rule->{iface}) {
bfc488f6 1121 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1122 if !$allow_iface;
dba740a9 1123 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1124 &$add_error('iface', $@) if $@;
b6b8e6ad
DM		 1125 if ($rule_env eq 'vm') {
1126 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1127 if $rule->{iface} !~ m/^net(\d+)$/;
1128 } elsif ($rule_env eq 'ct') {
1129 &$add_error('iface', "value does not match the regex pattern '(venet|eth\\d+)'")
1130 if $rule->{iface} !~ m/^(venet|eth(\d+))$/;
1131 }
1132 }
7ca36671
DM		 1133
1134 if ($rule->{macro}) {
6d9246e7
DM		 1135 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1136 $rule->{macro} = $preferred_name;
1137 } else {
1138 &$add_error('macro', "unknown macro '$rule->{macro}'");
1139 }
1140 }
1141
1142 if ($rule->{proto}) {
1143 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1144 &$add_error('proto', $@) if $@;
1145 }
7ca36671
DM		 1146
1147 if ($rule->{dport}) {
1148 eval { parse_port_name_number_or_range($rule->{dport}); };
6d9246e7
DM		 1149 &$add_error('dport', $@) if $@;
1150 &$add_error('proto', "missing property - 'dport' requires this property")
914f9a50 1151 if !$rule->{proto};
6d9246e7 1152 }
7ca36671
DM		 1153
1154 if ($rule->{sport}) {
1155 eval { parse_port_name_number_or_range($rule->{sport}); };
6d9246e7
DM		 1156 &$add_error('sport', $@) if $@;
1157 &$add_error('proto', "missing property - 'sport' requires this property")
914f9a50 1158 if !$rule->{proto};
7ca36671
DM		 1159 }
1160
1161 if ($rule->{source}) {
1162 eval { parse_address_list($rule->{source}); };
6d9246e7 1163 &$add_error('source', $@) if $@;
a523e057 1164 &$check_ipset_or_alias_property('source');
7ca36671
DM		 1165 }
1166
1167 if ($rule->{dest}) {
1168 eval { parse_address_list($rule->{dest}); };
6d9246e7 1169 &$add_error('dest', $@) if $@;
a523e057 1170 &$check_ipset_or_alias_property('dest');
7ca36671
DM		 1171 }
1172
a523e057 1173 if ($rule->{macro} && !$error_count) {
6d9246e7
DM		 1174 eval { &$apply_macro($rule->{macro}, $rule, 1); };
1175 if (my $err = $@) {
1176 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1177 my $eh = $err->{errors};
1178 foreach my $p (keys %$eh) {
1179 &$add_error($p, $eh->{$p});
1180 }
1181 } else {
1182 &$add_error('macro', "$err");
1183 }
1184 }
9a2745a0
DM		 1185 }
1186
6d9246e7
DM		 1187 $rule->{errors} = $errors if $error_count;
1188
7ca36671
DM		 1189 return $rule;
1190}
1191
9c7e0858
DM		 1192sub copy_rule_data {
1193 my ($rule, $param) = @_;
1194
1195 foreach my $k (keys %$rule_properties) {
1196 if (defined(my $v = $param->{$k})) {
1197 if ($v eq '' || $v eq '-') {
1198 delete $rule->{$k};
1199 } else {
1200 $rule->{$k} = $v;
1201 }
9c7e0858
DM		 1202 }
1203 }
7ca36671 1204
9c7e0858
DM		 1205 return $rule;
1206}
1207
1208# core functions
780bcc0f
DM		 1209my $bridge_firewall_enabled = 0;
1210
1211sub enable_bridge_firewall {
1212
1213 return if $bridge_firewall_enabled; # only once
1214
5f0a912c
DM		 1215 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1216 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1217
6a8a75db
DM		 1218 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1219 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1220
780bcc0f
DM		 1221 $bridge_firewall_enabled = 1;
1222}
1223
8cebfa6f 1224my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1225
b16e818e
DM		 1226sub iptables_restore_cmdlist {
1227 my ($cmdlist) = @_;
3a616aa0 1228
3fa83edf 1229 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 1230}
1231
34cdedfa
AD		 1232sub ipset_restore_cmdlist {
1233 my ($cmdlist) = @_;
1234
dd7a13fd 1235 run_command("/usr/sbin/ipset restore", input => $cmdlist);
34cdedfa
AD		 1236}
1237
de2a57cd
DM		 1238sub iptables_get_chains {
1239
1240 my $res = {};
1241
1242 # check what chains we want to track
1243 my $is_pvefw_chain = sub {
1244 my $name = shift;
1245
dec84fcd
DM		 1246 return 1 if $name =~ m/^PVEFW-\S+$/;
1247
de2a57cd 1248 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1249
1250 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1251
9e15114a
DM		 1252 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1253
a01c32c7 1254 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1255 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1256
1257 return undef;
1258 };
1259
1260 my $table = '';
1261
c4a2e5ae
DM		 1262 my $hooks = {};
1263
de2a57cd
DM		 1264 my $parser = sub {
1265 my $line = shift;
1266
1267 return if $line =~ m/^#/;
1268 return if $line =~ m/^\s*$/;
1269
1270 if ($line =~ m/^\*(\S+)$/) {
1271 $table = $1;
1272 return;
1273 }
1274
1275 return if $table ne 'filter';
1276
1277 if ($line =~ m/^:(\S+)\s/) {
1278 my $chain = $1;
1279 return if !&$is_pvefw_chain($chain);
3fa83edf 1280 $res->{$chain} = "unknown";
09d5f68e 1281 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1282 my ($chain, $sig) = ($1, $2);
de2a57cd 1283 return if !&$is_pvefw_chain($chain);
3fa83edf 1284 $res->{$chain} = $sig;
c4a2e5ae
DM		 1285 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1286 $hooks->{$1} = 1;
de2a57cd
DM		 1287 } else {
1288 # simply ignore the rest
1289 return;
1290 }
1291 };
1292
1293 run_command("/sbin/iptables-save", outfunc => $parser);
1294
c4a2e5ae 1295 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1296}
1297
9bf7d929
DM		 1298sub iptables_chain_digest {
1299 my ($rules) = @_;
1300 my $digest = Digest::SHA->new('sha1');
1301 foreach my $rule (@$rules) { # order is important
1302 $digest->add($rule);
1303 }
1304 return $digest->b64digest;
1305}
1306
3f95d14a
DM		 1307sub ipset_chain_digest {
1308 my ($rules) = @_;
4bd0a9c4 1309
3f95d14a
DM		 1310 my $digest = Digest::SHA->new('sha1');
1311 foreach my $rule (sort @$rules) { # note: sorted
1312 $digest->add($rule);
1313 }
1314 return $digest->b64digest;
1315}
1316
34cdedfa
AD		 1317sub ipset_get_chains {
1318
1319 my $res = {};
1320 my $chains = {};
1321
1322 my $parser = sub {
1323 my $line = shift;
1324
1325 return if $line =~ m/^#/;
1326 return if $line =~ m/^\s*$/;
4b96e877 1327 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1328 my $chain = $1;
1329 $line =~ s/\s+$//; # delete trailing white space
1330 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1331 } else {
1332 # simply ignore the rest
1333 return;
1334 }
1335 };
1336
3f95d14a 1337 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1338
3f95d14a
DM		 1339 # compute digest for each chain
1340 foreach my $chain (keys %$chains) {
1341 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1342 }
1343
1344 return $res;
1345}
1346
eba0fb64 1347sub ruleset_generate_cmdstr {
e523d2bb 1348 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
3a616aa0 1349
00bb4391 1350 return if defined($rule->{enable}) && !$rule->{enable};
6d9246e7 1351 return if $rule->{errors};
11bac5c2 1352
e5076eee
DM		 1353 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1354
1355 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1356 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1357
41524a58 1358 my @cmd = ();
3a616aa0 1359
eba0fb64
DM		 1360 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1361 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1362
ba791b1f
AD		 1363 my $source = $rule->{source};
1364 my $dest = $rule->{dest};
1365
cbb5d6f3 1366 if ($source) {
44be8ceb 1367 if ($source =~ m/^\+/) {
4dfe04e6 1368 if ($source =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1369 my $name = $1;
1370 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
708ba714
DM		 1371 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
1372 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb 1373 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
708ba714
DM		 1374 my $ipset_chain = compute_ipset_chain_name(0, $name);
1375 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb
DM		 1376 } else {
1377 die "no such ipset '$name'\n";
1378 }
44be8ceb
DM		 1379 } else {
1380 die "invalid security group name '$source'\n";
1381 }
1382 } elsif ($source =~ m/^${ip_alias_pattern}$/){
81d574a7 1383 my $alias = lc($source);
bfc488f6 1384 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
e523d2bb
DM		 1385 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1386 die "no such alias '$source'\n" if !$e;
81d574a7 1387 push @cmd, "-s $e->{cidr}";
ac8242cc 1388 } elsif ($source =~ m/\-/){
ba791b1f 1389 push @cmd, "-m iprange --src-range $source";
cbb5d6f3 1390 } else {
ba791b1f
AD		 1391 push @cmd, "-s $source";
1392 }
1393 }
1394
cbb5d6f3 1395 if ($dest) {
44be8ceb 1396 if ($dest =~ m/^\+/) {
4dfe04e6 1397 if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1398 my $name = $1;
1399 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
708ba714 1400 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
ac4580a0 1401 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb 1402 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
708ba714
DM		 1403 my $ipset_chain = compute_ipset_chain_name(0, $name);
1404 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb
DM		 1405 } else {
1406 die "no such ipset '$name'\n";
1407 }
44be8ceb
DM		 1408 } else {
1409 die "invalid security group name '$dest'\n";
1410 }
1411 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
51b40846 1412 my $alias = lc($dest);
bfc488f6 1413 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
e523d2bb
DM		 1414 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1415 die "no such alias '$dest'\n" if !$e;
81d574a7 1416 push @cmd, "-d $e->{cidr}";
cbb5d6f3 1417 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f 1418 push @cmd, "-m iprange --dst-range $dest";
cbb5d6f3 1419 } else {
d6d2a385 1420 push @cmd, "-d $dest";
ba791b1f
AD		 1421 }
1422 }
4b586518 1423
181390b0 1424 if ($rule->{proto}) {
41524a58 1425 push @cmd, "-p $rule->{proto}";
e3a1d391 1426
181390b0 1427 my $multiport = 0;
e5076eee
DM		 1428 $multiport++ if $nbdport > 1;
1429 $multiport++ if $nbsport > 1;
e3a1d391 1430
41524a58 1431 push @cmd, "--match multiport" if $multiport;
4b586518 1432
cbb5d6f3 1433 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1434 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1435
1436 if ($rule->{dport}) {
1437 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1438 # Note: we use dport to store --icmp-type
1439 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1440 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 1441 } else {
e5076eee 1442 if ($nbdport > 1) {
181390b0 1443 if ($multiport == 2) {
41524a58 1444 push @cmd, "--ports $rule->{dport}";
181390b0 1445 } else {
41524a58 1446 push @cmd, "--dports $rule->{dport}";
181390b0 1447 }
e3a1d391 1448 } else {
41524a58 1449 push @cmd, "--dport $rule->{dport}";
e3a1d391 1450 }
4b586518
DM		 1451 }
1452 }
4b586518 1453
181390b0 1454 if ($rule->{sport}) {
e5076eee 1455 if ($nbsport > 1) {
41524a58 1456 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1457 } else {
41524a58 1458 push @cmd, "--sport $rule->{sport}";
181390b0 1459 }
4b586518 1460 }
181390b0 1461 } elsif ($rule->{dport} || $rule->{sport}) {
93d96f83
DM		 1462 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
1463 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
4b586518
DM		 1464 }
1465
41524a58 1466 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1467
1468 if (my $action = $rule->{action}) {
cbb5d6f3 1469 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1470 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1471 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1472 }
3a616aa0 1473
eba0fb64
DM		 1474 return scalar(@cmd) ? join(' ', @cmd) : undef;
1475}
1476
1477sub ruleset_generate_rule {
e523d2bb 1478 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
eba0fb64 1479
e5076eee
DM		 1480 my $rules;
1481
1482 if ($rule->{macro}) {
1483 $rules = &$apply_macro($rule->{macro}, $rule);
1484 } else {
1485 $rules = [ $rule ];
1486 }
1487
d4091b82
DM		 1488 # update all or nothing
1489
1490 my @cmds = ();
cbb5d6f3 1491 foreach my $tmp (@$rules) {
e523d2bb 1492 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
d4091b82 1493 push @cmds, $cmdstr;
e5076eee 1494 }
41524a58 1495 }
d4091b82
DM		 1496
1497 foreach my $cmdstr (@cmds) {
1498 ruleset_addrule($ruleset, $chain, $cmdstr);
1499 }
3fa83edf 1500}
0f168d7b 1501
eba0fb64
DM		 1502sub ruleset_generate_rule_insert {
1503 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1504
e5076eee
DM		 1505 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1506
eba0fb64
DM		 1507 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1508 ruleset_insertrule($ruleset, $chain, $cmdstr);
1509 }
1510}
3fa83edf
DM		 1511
1512sub ruleset_create_chain {
1513 my ($ruleset, $chain) = @_;
3a616aa0 1514
d050c724 1515 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1516 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1517
3fa83edf
DM		 1518 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1519
1520 $ruleset->{$chain} = [];
3a616aa0
AD		 1521}
1522
3fa83edf
DM		 1523sub ruleset_chain_exist {
1524 my ($ruleset, $chain) = @_;
3a616aa0 1525
3fa83edf
DM		 1526 return $ruleset->{$chain} ? 1 : undef;
1527}
3a616aa0 1528
3fa83edf
DM		 1529sub ruleset_addrule {
1530 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1531
3fa83edf 1532 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1533
3fa83edf
DM		 1534 push @{$ruleset->{$chain}}, "-A $chain $rule";
1535}
3a616aa0 1536
3fa83edf
DM		 1537sub ruleset_insertrule {
1538 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1539
3fa83edf 1540 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1541
3fa83edf
DM		 1542 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1543}
3a616aa0 1544
782c4cde
DM		 1545sub get_log_rule_base {
1546 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1547
782c4cde
DM		 1548 die "internal error - no log level" if !defined($loglevel);
1549
1550 $vmid = 0 if !defined($vmid);
1551
cbb5d6f3 1552 # Note: we use special format for prefix to pass further
782c4cde
DM		 1553 # info to log daemon (VMID, LOGVELEL and CHAIN)
1554
1555 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1556}
1557
1558sub ruleset_addlog {
1559 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1560
1561 return if !defined($loglevel);
1562
1563 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1564
1565 $logrule = "$rule $logrule" if defined($rule);
1566
88733a74 1567 ruleset_addrule($ruleset, $chain, $logrule);
782c4cde
DM		 1568}
1569
ead850e8 1570sub ruleset_add_chain_policy {
782c4cde 1571 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1572
1573 if ($policy eq 'ACCEPT') {
1574
1575 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1576 { ACCEPT => $accept_action});
1577
1578 } elsif ($policy eq 'DROP') {
1579
1580 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1581
782c4cde 1582 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1583
1584 ruleset_addrule($ruleset, $chain, "-j DROP");
1585 } elsif ($policy eq 'REJECT') {
1586 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1587
782c4cde 1588 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1589
1590 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1591 } else {
1592 # should not happen
1593 die "internal error: unknown policy '$policy'";
1594 }
1595}
1596
e2943485
DM		 1597sub ruleset_chain_add_conn_filters {
1598 my ($ruleset, $chain, $accept) = @_;
1599
1600 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1601 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1602}
1603
1604sub ruleset_chain_add_input_filters {
2428e394
AD		 1605 my ($ruleset, $chain, $options, $cluster_conf, $loglevel) = @_;
1606
1607 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 1608 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
1609 ruleset_create_chain($ruleset, "PVEFW-blacklist");
1610 ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel;
1611 ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP");
1612 }
708ba714
DM		 1613 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist');
1614 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist");
2428e394 1615 }
e2943485
DM		 1616
1617 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1618 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1619 }
1620
1621 if ($options->{tcpflags}) {
1622 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1623 }
1624}
1625
9e15114a 1626sub ruleset_create_vm_chain {
808d711d 1627 my ($ruleset, $chain, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 1628
9e15114a 1629 ruleset_create_chain($ruleset, $chain);
b47ecc88 1630 my $accept = generate_nfqueue($options);
3a616aa0 1631
ce15d90b 1632 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1633 if ($direction eq 'OUT') {
cbb5d6f3 1634 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1635 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1636 } else {
cbb5d6f3 1637 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1638 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1639 }
ce15d90b
DM		 1640 }
1641
b21aca2c
DM		 1642 if ($direction eq 'OUT') {
1643 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1644 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1645 }
808d711d
DM		 1646 if ($ipfilter_ipset) {
1647 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src -j DROP");
1648 }
9e15114a 1649 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1650 }
9e15114a
DM		 1651}
1652
4bc6b5ac
DM		 1653sub ruleset_add_group_rule {
1654 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action) = @_;
1655
1656 my $group = $rule->{action};
1657 my $group_chain = "GROUP-$group-$direction";
1658 if(!ruleset_chain_exist($ruleset, $group_chain)){
1659 generate_group_rules($ruleset, $cluster_conf, $group);
1660 }
bfc488f6 1661
f8b12fff
DM		 1662 if ($direction eq 'OUT' && $rule->{iface_out}) {
1663 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain");
1664 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1665 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain");
4bc6b5ac
DM		 1666 } else {
1667 ruleset_addrule($ruleset, $chain, "-j $group_chain");
1668 }
1669
1670 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action");
1671}
1672
9e15114a 1673sub ruleset_generate_vm_rules {
e523d2bb 1674 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1675
1676 my $lc_direction = lc($direction);
c29f55c9 1677
6b8ca015
DM		 1678 my $in_accept = generate_nfqueue($options);
1679
92e976b3
DM		 1680 foreach my $rule (@$rules) {
1681 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 1682 next if !$rule->{enable} || $rule->{errors};
92e976b3 1683 if ($rule->{type} eq 'group') {
4bc6b5ac
DM		 1684 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
1685 $direction eq 'OUT' ? 'RETURN' : $in_accept);
92e976b3
DM		 1686 } else {
1687 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1688 eval {
1689 if ($direction eq 'OUT') {
1690 ruleset_generate_rule($ruleset, $chain, $rule,
e34d0e58 1691 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
e523d2bb 1692 undef, $cluster_conf, $vmfw_conf);
921dfb33 1693 } else {
e34d0e58
DM		 1694 ruleset_generate_rule($ruleset, $chain, $rule,
1695 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
e523d2bb 1696 undef, $cluster_conf, $vmfw_conf);
921dfb33
DM		 1697 }
1698 };
1699 warn $@ if $@;
4e6112f9 1700 }
3a616aa0 1701 }
9e15114a
DM		 1702}
1703
b47ecc88
AD		 1704sub generate_nfqueue {
1705 my ($options) = @_;
1706
73089769
DM		 1707 if ($options->{ips}) {
1708 my $action = "NFQUEUE";
1709 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1710 if (defined($3) && defined($1)) {
b47ecc88 1711 $action .= " --queue-balance $1:$3";
73089769 1712 } elsif (defined($1)) {
b47ecc88
AD		 1713 $action .= " --queue-num $1";
1714 }
1715 }
8dc92812 1716 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1717 return $action;
1718 } else {
1719 return "ACCEPT";
b47ecc88 1720 }
b47ecc88
AD		 1721}
1722
da6fc60b 1723sub ruleset_generate_vm_ipsrules {
a01c32c7 1724 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 1725
1726 if ($options->{ips} && $direction eq 'IN') {
1727 my $nfqueue = generate_nfqueue($options);
1728
a01c32c7 1729 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 1730 ruleset_create_chain($ruleset, "PVEFW-IPS");
1731 }
1732
a01c32c7 1733 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
da6fc60b
AD		 1734 }
1735}
1736
9e15114a 1737sub generate_venet_rules_direction {
58638f2c 1738 my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
9e15114a 1739
9e15114a
DM		 1740 my $lc_direction = lc($direction);
1741
1742 my $rules = $vmfw_conf->{rules};
1743
1744 my $options = $vmfw_conf->{options};
1745 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1746
1747 my $chain = "venet0-$vmid-$direction";
1748
808d711d
DM		 1749 my $ipfilter_ipset = compute_ipset_chain_name($vmid, 'ipfilter')
1750 if $vmfw_conf->{ipset}->{ipfilter};
1751
1752 ruleset_create_vm_chain($ruleset, $chain, $options, undef, $ipfilter_ipset, $direction);
9e15114a 1753
e523d2bb 1754 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction);
9e15114a
DM		 1755
1756 # implement policy
1757 my $policy;
1758
1759 if ($direction eq 'OUT') {
1760 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1761 } else {
1762 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1763 }
1764
b47ecc88
AD		 1765 my $accept = generate_nfqueue($options);
1766 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1767 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1768
eba0fb64 1769 if ($direction eq 'OUT') {
41389aed 1770 ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", {
eba0fb64
DM		 1771 action => $chain,
1772 source => $ip,
1773 iface_in => 'venet0'});
1774 } else {
41389aed 1775 ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", {
eba0fb64
DM		 1776 action => $chain,
1777 dest => $ip,
1778 iface_out => 'venet0'});
1779 }
9e15114a
DM		 1780}
1781
1782sub generate_tap_rules_direction {
58638f2c 1783 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction) = @_;
9e15114a
DM		 1784
1785 my $lc_direction = lc($direction);
1786
1787 my $rules = $vmfw_conf->{rules};
1788
1789 my $options = $vmfw_conf->{options};
1790 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1791
1792 my $tapchain = "$iface-$direction";
1793
808d711d
DM		 1794 my $ipfilter_ipset = compute_ipset_chain_name($vmid, 'ipfilter')
1795 if $vmfw_conf->{ipset}->{ipfilter};
1796
1797 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $ipfilter_ipset, $direction);
9e15114a 1798
e523d2bb 1799 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1800
a01c32c7 1801 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 1802
ccae0b50
DM		 1803 # implement policy
1804 my $policy;
1805
1806 if ($direction eq 'OUT') {
72f63fde 1807 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1808 } else {
72f63fde 1809 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1810 }
1811
b47ecc88
AD		 1812 my $accept = generate_nfqueue($options);
1813 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1814 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1815
3fa83edf 1816 # plug the tap chain to bridge chain
3cc81077 1817 if ($direction eq 'IN') {
a01c32c7
DM		 1818 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
1819 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
3cc81077 1820 } else {
a01c32c7
DM		 1821 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
1822 "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain");
3cc81077 1823 }
3a616aa0
AD		 1824}
1825
d18c1e2b 1826sub enable_host_firewall {
fca39c2c 1827 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
0bd5f137 1828
92e976b3 1829 my $options = $hostfw_conf->{options};
63324b09 1830 my $cluster_options = $cluster_conf->{options};
92e976b3 1831 my $rules = $hostfw_conf->{rules};
35f0c37e 1832 my $cluster_rules = $cluster_conf->{rules};
178a63be 1833
3fa83edf 1834 # host inbound firewall
dec84fcd
DM		 1835 my $chain = "PVEFW-HOST-IN";
1836 ruleset_create_chain($ruleset, $chain);
0bd5f137 1837
178a63be
DM		 1838 my $loglevel = get_option_log_level($options, "log_level_in");
1839
e2943485 1840 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
4ac863a6 1841
e2943485 1842 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2428e394 1843 ruleset_chain_add_input_filters($ruleset, $chain, $options, $cluster_conf, $loglevel);
fb424a00 1844
23e888f8
DM		 1845 # we use RETURN because we need to check also tap rules
1846 my $accept_action = 'RETURN';
1847
cc8dc02f
DM		 1848 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1849
35f0c37e
DM		 1850 # add host rules first, so that cluster wide rules can be overwritten
1851 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 1852 next if !$rule->{enable} || $rule->{errors};
bfc488f6 1853
f8b12fff 1854 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 1855
1a9978ed
DM		 1856 eval {
1857 if ($rule->{type} eq 'group') {
1858 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action);
1859 } elsif ($rule->{type} eq 'in') {
bfc488f6 1860 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 1861 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 1862 }
1863 };
1864 warn $@ if $@;
f8b12fff 1865 delete $rule->{iface_in};
0bd5f137 1866 }
eb399cef
DM		 1867
1868 # allow standard traffic for management ipset (includes cluster network)
708ba714
DM		 1869 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management");
1870 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
eb399cef 1871 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API
bfc488f6 1872 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
eb399cef
DM		 1873 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
1874 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 1875
525778d7 1876 my $localnet = local_network();
3bc79f87 1877
eb399cef 1878 # corosync
525778d7 1879 if ($localnet) {
c5191f57 1880 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7
DM		 1881 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule");
1882 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87 1883 }
0bd5f137 1884
23e888f8 1885 # implement input policy
63324b09 1886 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1887 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1888
3fa83edf 1889 # host outbound firewall
aadd745e 1890 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1891 ruleset_create_chain($ruleset, $chain);
1892
178a63be
DM		 1893 $loglevel = get_option_log_level($options, "log_level_out");
1894
dec84fcd 1895 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
e2943485
DM		 1896
1897 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
1898
23e888f8
DM		 1899 # we use RETURN because we may want to check other thigs later
1900 $accept_action = 'RETURN';
1901
cc8dc02f
DM		 1902 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1903
35f0c37e
DM		 1904 # add host rules first, so that cluster wide rules can be overwritten
1905 foreach my $rule (@$rules, @$cluster_rules) {
5383df39
DM		 1906 next if !$rule->{enable} || $rule->{errors};
1907
f8b12fff 1908 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed
DM		 1909 eval {
1910 if ($rule->{type} eq 'group') {
1911 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action);
1912 } elsif ($rule->{type} eq 'out') {
bfc488f6 1913 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 1914 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 1915 }
1916 };
1917 warn $@ if $@;
f8b12fff 1918 delete $rule->{iface_out};
0bd5f137
AD		 1919 }
1920
3bc79f87 1921 # allow standard traffic on cluster network
525778d7
DM		 1922 if ($localnet) {
1923 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API
1924 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 1925 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
525778d7 1926 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
bfc488f6 1927
c5191f57 1928 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7 1929 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule");
f573ae2c 1930 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87
DM		 1931 }
1932
23e888f8 1933 # implement output policy
63324b09 1934 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1935 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1936
dec84fcd
DM		 1937 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1938 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1939}
1940
1941sub generate_group_rules {
fca39c2c 1942 my ($ruleset, $cluster_conf, $group) = @_;
9d31b418 1943
c6f5cc88 1944 my $rules = $cluster_conf->{groups}->{$group};
6158271d 1945
b4deedab
DM		 1946 if (!$rules) {
1947 warn "no such security group '$group'\n";
1948 $rules = []; # create empty chain
1949 }
1950
3fa83edf 1951 my $chain = "GROUP-${group}-IN";
9d31b418 1952
3fa83edf 1953 ruleset_create_chain($ruleset, $chain);
b47ecc88 1954 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1955
92e976b3
DM		 1956 foreach my $rule (@$rules) {
1957 next if $rule->{type} ne 'in';
ba791b1f 1958 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 1959 }
1960
3fa83edf 1961 $chain = "GROUP-${group}-OUT";
9d31b418 1962
3fa83edf 1963 ruleset_create_chain($ruleset, $chain);
4e6112f9 1964 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1965
92e976b3
DM		 1966 foreach my $rule (@$rules) {
1967 next if $rule->{type} ne 'out';
1968 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1969 # check also other tap rules later
cbb5d6f3 1970 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1971 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 1972 }
9d31b418
AD		 1973}
1974
51bae274
DM		 1975my $MAX_NETS = 32;
1976my $valid_netdev_names = {};
1977for (my $i = 0; $i < $MAX_NETS; $i++) {
1978 $valid_netdev_names->{"net$i"} = 1;
1979}
5e1267a5 1980
51bae274 1981sub parse_fw_rule {
a523e057 1982 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
5e1267a5 1983
d4cda423
DM		 1984 my $orig_line = $line;
1985
6d9246e7
DM		 1986 my $rule = {};
1987
11bac5c2 1988 # we can add single line comments to the end of the rule
6d9246e7
DM		 1989 if ($line =~ s/#\s*(.*?)\s*$//) {
1990 $rule->{comment} = decode('utf8', $1);
1991 }
11bac5c2
DM		 1992
1993 # we can disable a rule when prefixed with '|'
ea9e5116 1994
6d9246e7 1995 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 1996
dba740a9
DM		 1997 $line =~ s/^(\S+)\s+(\S+)\s*// ||
1998 die "unable to parse rule: $line\n";
6d9246e7
DM		 1999
2000 $rule->{type} = lc($1);
2001 $rule->{action} = $2;
2002
2003 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2004 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2005 $rule->{macro} = $1;
2006 $rule->{action} = $2;
92e976b3 2007 }
51bae274
DM		 2008 }
2009
dba740a9
DM		 2010 while (length($line)) {
2011 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2012 $rule->{iface} = $1;
dba740a9
DM		 2013 next;
2014 }
51bae274 2015
6d9246e7 2016 last if $rule->{type} eq 'group';
51bae274 2017
dba740a9 2018 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2019 $rule->{proto} = $1;
dba740a9
DM		 2020 next;
2021 }
6d9246e7 2022
dba740a9 2023 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2024 $rule->{dport} = $1;
dba740a9
DM		 2025 next;
2026 }
6d9246e7 2027
dba740a9 2028 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2029 $rule->{sport} = $1;
dba740a9
DM		 2030 next;
2031 }
2032 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2033 $rule->{source} = $1;
dba740a9
DM		 2034 next;
2035 }
2036 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2037 $rule->{dest} = $1;
dba740a9
DM		 2038 next;
2039 }
51bae274 2040
dba740a9
DM		 2041 last;
2042 }
ba791b1f 2043
dba740a9 2044 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2045
a523e057 2046 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
d4cda423
DM		 2047 if ($verbose && $rule->{errors}) {
2048 warn "$prefix - errors in rule parameters: $orig_line\n";
2049 foreach my $p (keys %{$rule->{errors}}) {
2050 warn " $p: $rule->{errors}->{$p}\n";
2051 }
2052 }
6d9246e7
DM		 2053
2054 return $rule;
51bae274
DM		 2055}
2056
2d404ffc 2057sub parse_vmfw_option {
85c6eaed
DM		 2058 my ($line) = @_;
2059
2060 my ($opt, $value);
2061
178a63be
DM		 2062 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2063
6bafd113 2064 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2065 $opt = lc($1);
2066 $value = int($2);
178a63be
DM		 2067 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2068 $opt = lc($1);
2069 $value = $2 ? lc($3) : '';
72f63fde 2070 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2071 $opt = lc($1);
2072 $value = uc($3);
b47ecc88
AD		 2073 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2074 $opt = lc($1);
2075 $value = $2;
9c6b6efd 2076 } else {
85c6eaed
DM		 2077 die "can't parse option '$line'\n"
2078 }
2079
2080 return ($opt, $value);
2081}
2082
2d404ffc
DM		 2083sub parse_hostfw_option {
2084 my ($line) = @_;
2085
2086 my ($opt, $value);
2087
2088 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2089
c50a5a68 2090 if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2091 $opt = lc($1);
2092 $value = int($2);
178a63be 2093 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2094 $opt = lc($1);
2095 $value = $2 ? lc($3) : '';
28c082a1 2096 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 2097 $opt = lc($1);
2098 $value = int($2);
2d404ffc 2099 } else {
2d404ffc
DM		 2100 die "can't parse option '$line'\n"
2101 }
2102
2103 return ($opt, $value);
2104}
2105
c6f5cc88
DM		 2106sub parse_clusterfw_option {
2107 my ($line) = @_;
2108
2109 my ($opt, $value);
2110
2111 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
2112 $opt = lc($1);
2113 $value = int($2);
63324b09
DM		 2114 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2115 $opt = lc($1);
2116 $value = uc($3);
c6f5cc88 2117 } else {
c6f5cc88
DM		 2118 die "can't parse option '$line'\n"
2119 }
2120
2121 return ($opt, $value);
2122}
2123
6c221576
DM		 2124sub resolve_alias {
2125 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2126
2127 if ($cidr !~ m/^\d/) {
2128 my $alias = lc($cidr);
2129 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
2130 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
2131 return $e->{cidr} if $e;
2132
2133 die "no such alias '$cidr'\n";
2134 }
2135
2136 return $cidr;
2137}
2138
e76a9f53 2139sub parse_alias {
92e1209b
AD		 2140 my ($line) = @_;
2141
81d574a7
DM		 2142 # we can add single line comments to the end of the line
2143 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2144
92e1209b 2145 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7
DM		 2146 my ($name, $cidr) = ($1, $2);
2147 $cidr =~ s|/32$||;
2148 pve_verify_ipv4_or_cidr($cidr);
2149 my $data = {
2150 name => $name,
2151 cidr => $cidr,
2152 };
2153 $data->{comment} = $comment if $comment;
2154 return $data;
92e1209b
AD		 2155 }
2156
81d574a7 2157 return undef;
92e1209b
AD		 2158}
2159
e5cd1ee0 2160sub generic_fw_config_parser {
1210ae94 2161 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
5e1267a5 2162
51bae274
DM		 2163 my $section;
2164 my $group;
2165
1210ae94 2166 my $res = $empty_conf;
6158271d 2167
51bae274
DM		 2168 while (defined(my $line = <$fh>)) {
2169 next if $line =~ m/^#/;
2170 next if $line =~ m/^\s*$/;
2171
c8c534f7
DM		 2172 chomp $line;
2173
961b4928
DM		 2174 my $linenr = $fh->input_line_number();
2175 my $prefix = "$filename (line $linenr)";
2176
1210ae94 2177 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2178 $section = 'options';
2179 next;
2180 }
2181
1210ae94 2182 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2183 $section = 'aliases';
2184 next;
2185 }
2186
1210ae94 2187 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2188 $section = 'groups';
92e976b3 2189 $group = lc($1);
0d22acb3 2190 my $comment = $2;
351052d1
DM		 2191 eval {
2192 die "security group name too long\n" if length($group) > $max_group_name_length;
2193 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2194 };
2195 if (my $err = $@) {
2196 ($section, $group, $comment) = undef;
2197 warn "$prefix: $err";
2198 next;
2199 }
2200
c85c87f9 2201 $res->{$section}->{$group} = [];
649e4d57
DM		 2202 $res->{group_comments}->{$group} = decode('utf8', $comment)
2203 if $comment;
51bae274
DM		 2204 next;
2205 }
34cdedfa 2206
1210ae94 2207 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2208 $section = 'rules';
2209 next;
2210 }
cbb5d6f3 2211
1210ae94 2212 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2213 $section = 'ipset';
2214 $group = lc($1);
d72c631c 2215 my $comment = $2;
351052d1
DM		 2216 eval {
2217 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2218 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2219 };
2220 if (my $err = $@) {
2221 ($section, $group, $comment) = undef;
2222 warn "$prefix: $err";
2223 next;
2224 }
2225
c85c87f9 2226 $res->{$section}->{$group} = [];
e34d0e58 2227 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2228 if $comment;
34cdedfa
AD		 2229 next;
2230 }
2231
c6f5cc88 2232 if (!$section) {
cbb5d6f3 2233 warn "$prefix: skip line - no section\n";
51bae274
DM		 2234 next;
2235 }
2236
c6f5cc88
DM		 2237 if ($section eq 'options') {
2238 eval {
1210ae94
DM		 2239 my ($opt, $value);
2240 if ($rule_env eq 'cluster') {
2241 ($opt, $value) = parse_clusterfw_option($line);
2242 } elsif ($rule_env eq 'host') {
2243 ($opt, $value) = parse_hostfw_option($line);
2244 } else {
2245 ($opt, $value) = parse_vmfw_option($line);
2246 }
c6f5cc88
DM		 2247 $res->{options}->{$opt} = $value;
2248 };
2249 warn "$prefix: $@" if $@;
92e1209b
AD		 2250 } elsif ($section eq 'aliases') {
2251 eval {
e76a9f53 2252 my $data = parse_alias($line);
81d574a7 2253 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2254 };
2255 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2256 } elsif ($section eq 'rules') {
2257 my $rule;
1210ae94 2258 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
c6f5cc88
DM		 2259 if (my $err = $@) {
2260 warn "$prefix: $err";
2261 next;
2262 }
2263 push @{$res->{$section}}, $rule;
2264 } elsif ($section eq 'groups') {
34cdedfa 2265 my $rule;
1210ae94 2266 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
34cdedfa
AD		 2267 if (my $err = $@) {
2268 warn "$prefix: $err";
2269 next;
2270 }
3f95d14a 2271 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2272 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2273 # we can add single line comments to the end of the rule
2274 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2275
30f1b100 2276 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2277 my $nomatch = $1;
9d6f90e6 2278 my $cidr = $2;
d46b1ef6
DM		 2279 my $errors;
2280
2281 if ($nomatch && !$feature_ipset_nomatch) {
2282 $errors->{nomatch} = "nomatch not supported by kernel";
2283 }
2a052ee3 2284
4803b296
DM		 2285 eval {
2286 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2287 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2288 } else {
2289 $cidr =~ s|/32$||;
d46b1ef6 2290 pve_verify_ipv4_or_cidr_or_alias($cidr);
92e1209b 2291 }
4803b296
DM		 2292 };
2293 if (my $err = $@) {
c8c534f7 2294 chomp $err;
d46b1ef6 2295 $errors->{cidr} = $err;
2a052ee3 2296 }
2a052ee3 2297
e34d0e58 2298 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2299 $entry->{nomatch} = 1 if $nomatch;
2300 $entry->{comment} = $comment if $comment;
d46b1ef6 2301 $entry->{errors} = $errors if $errors;
e34d0e58 2302
c8c534f7 2303 if ($verbose && $errors) {
9a3061c7 2304 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 2305 foreach my $p (keys %{$errors}) {
2306 warn " $p: $errors->{$p}\n";
2307 }
2308 }
2309
9d6f90e6 2310 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 2311 } else {
2312 warn "$prefix: skip line - unknown section\n";
2313 next;
51bae274 2314 }
5e1267a5
DM		 2315 }
2316
2317 return $res;
2318}
2319
e5cd1ee0 2320sub parse_hostfw_config {
1210ae94
DM		 2321 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2322
2323 my $empty_conf = { rules => [], options => {}};
2324
e5cd1ee0 2325 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
1210ae94
DM		 2326}
2327
e5cd1ee0 2328sub parse_vmfw_config {
1210ae94
DM		 2329 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2330
2331 my $empty_conf = {
2332 rules => [],
2333 options => {},
2334 aliases => {},
2335 ipset => {} ,
2336 ipset_comments => {},
2337 };
2338
e5cd1ee0 2339 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
1210ae94
DM		 2340}
2341
e5cd1ee0 2342sub parse_clusterfw_config {
1210ae94
DM		 2343 my ($filename, $fh, $verbose) = @_;
2344
2345 my $section;
2346 my $group;
2347
2348 my $empty_conf = {
2349 rules => [],
2350 options => {},
2351 aliases => {},
2352 groups => {},
2353 group_comments => {},
2354 ipset => {} ,
2355 ipset_comments => {},
2356 };
2357
e5cd1ee0 2358 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
1210ae94
DM		 2359}
2360
06320eb0
DM		 2361sub run_locked {
2362 my ($code, @param) = @_;
2363
2364 my $timeout = 10;
2365
2366 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2367
2368 die $@ if $@;
2369
2370 return $res;
2371}
2372
5e1267a5
DM		 2373sub read_local_vm_config {
2374
2375 my $openvz = {};
5e1267a5
DM		 2376 my $qemu = {};
2377
c8301d63 2378 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2379
c8301d63
DM		 2380 my $vmlist = PVE::Cluster::get_vmlist();
2381 return $vmdata if !$vmlist || !$vmlist->{ids};
2382 my $ids = $vmlist->{ids};
2383
2384 foreach my $vmid (keys %$ids) {
2385 next if !$vmid; # skip VE0
2386 my $d = $ids->{$vmid};
2387 next if !$d->{node} || $d->{node} ne $nodename;
2388 next if !$d->{type};
2389 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2390 if ($have_pve_manager) {
2391 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2392 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2393 $openvz->{$vmid} = $conf;
2394 }
c8301d63
DM		 2395 }
2396 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2397 if ($have_qemu_server) {
2398 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2399 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2400 $qemu->{$vmid} = $conf;
2401 }
c8301d63 2402 }
5e1267a5
DM		 2403 }
2404 }
d9fee004 2405
5e1267a5
DM		 2406 return $vmdata;
2407};
2408
e7b35711 2409sub load_vmfw_conf {
a523e057 2410 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
e7b35711
DM		 2411
2412 my $vmfw_conf = {};
2413
21053409 2414 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177
DM		 2415
2416 my $filename = "$dir/$vmid.fw";
e7b35711 2417 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2418 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
708ba714 2419 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 2420 }
2421
2422 return $vmfw_conf;
2423}
2424
464f933e 2425my $format_rules = sub {
dba740a9 2426 my ($rules, $allow_iface) = @_;
464f933e
DM		 2427
2428 my $raw = '';
2429
2430 foreach my $rule (@$rules) {
c14dacdf 2431 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2432 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2433 $raw .= uc($rule->{type});
7ca36671
DM		 2434 if ($rule->{macro}) {
2435 $raw .= " $rule->{macro}($rule->{action})";
2436 } else {
2437 $raw .= " " . $rule->{action};
2438 }
dba740a9
DM		 2439 if ($allow_iface && $rule->{iface}) {
2440 $raw .= " -i $rule->{iface}";
2441 }
c14dacdf
DM		 2442
2443 if ($rule->{type} ne 'group') {
dba740a9
DM		 2444 $raw .= " -source $rule->{source}" if $rule->{source};
2445 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2446 $raw .= " -p $rule->{proto}" if $rule->{proto};
2447 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2448 $raw .= " -sport $rule->{sport}" if $rule->{sport};
c14dacdf
DM		 2449 }
2450
cbb5d6f3 2451 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2452 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2453 $raw .= "\n";
2454 } else {
c14dacdf 2455 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2456 }
2457 }
2458
2459 return $raw;
2460};
2461
2462my $format_options = sub {
68c90e21
DM		 2463 my ($options) = @_;
2464
2465 my $raw = '';
464f933e
DM		 2466
2467 $raw .= "[OPTIONS]\n\n";
2468 foreach my $opt (keys %$options) {
2469 $raw .= "$opt: $options->{$opt}\n";
2470 }
2471 $raw .= "\n";
68c90e21
DM		 2472
2473 return $raw;
464f933e
DM		 2474};
2475
0d5f0a0f
DM		 2476my $format_aliases = sub {
2477 my ($aliases) = @_;
2478
2479 my $raw = '';
2480
2481 $raw .= "[ALIASES]\n\n";
2482 foreach my $k (keys %$aliases) {
81d574a7
DM		 2483 my $e = $aliases->{$k};
2484 $raw .= "$e->{name} $e->{cidr}";
2485 $raw .= " # " . encode('utf8', $e->{comment})
2486 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2487 $raw .= "\n";
0d5f0a0f
DM		 2488 }
2489 $raw .= "\n";
2490
2491 return $raw;
2492};
2493
1210ae94
DM		 2494my $format_ipsets = sub {
2495 my ($fw_conf) = @_;
2496
9d6f90e6
DM		 2497 my $raw = '';
2498
1210ae94
DM		 2499 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
2500 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
2501 my $utf8comment = encode('utf8', $comment);
2502 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2503 } else {
2504 $raw .= "[IPSET $ipset]\n\n";
2505 }
2506 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 2507
1210ae94
DM		 2508 my $nethash = {};
2509 foreach my $entry (@$options) {
2510 $nethash->{$entry->{cidr}} = $entry;
2511 }
2512
2513 foreach my $cidr (sort keys %$nethash) {
2514 my $entry = $nethash->{$cidr};
2515 my $line = $entry->{nomatch} ? '!' : '';
2516 $line .= $entry->{cidr};
2517 $line .= " # " . encode('utf8', $entry->{comment})
2518 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2519 $raw .= "$line\n";
2520 }
2521
2522 $raw .= "\n";
9d6f90e6 2523 }
e34d0e58 2524
9d6f90e6
DM		 2525 return $raw;
2526};
2527
464f933e
DM		 2528sub save_vmfw_conf {
2529 my ($vmid, $vmfw_conf) = @_;
2530
2531 my $raw = '';
2532
2533 my $options = $vmfw_conf->{options};
89ea63c8 2534 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 2535
e76a9f53 2536 my $aliases = $vmfw_conf->{aliases};
89ea63c8 2537 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 2538
89ea63c8 2539 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 2540
8824b2f0 2541 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 2542 if ($rules && scalar(@$rules)) {
464f933e
DM		 2543 $raw .= "[RULES]\n\n";
2544 $raw .= &$format_rules($rules, 1);
2545 $raw .= "\n";
2546 }
2547
21053409
DM		 2548 mkdir $pvefw_conf_dir;
2549
2550 my $filename = "$pvefw_conf_dir/$vmid.fw";
464f933e
DM		 2551 PVE::Tools::file_set_contents($filename, $raw);
2552}
2553
6fc63ffd 2554sub read_vm_firewall_configs {
a523e057 2555 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
8aef5177 2556
6fc63ffd 2557 my $vmfw_configs = {};
c8301d63 2558
b6b8e6ad 2559 foreach my $vmid (keys %{$vmdata->{qemu}}) {
a523e057 2560 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
b6b8e6ad
DM		 2561 next if !$vmfw_conf->{options}; # skip if file does not exists
2562 $vmfw_configs->{$vmid} = $vmfw_conf;
2563 }
2564 foreach my $vmid (keys %{$vmdata->{openvz}}) {
a523e057 2565 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
e7b35711
DM		 2566 next if !$vmfw_conf->{options}; # skip if file does not exists
2567 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2568 }
2569
6fc63ffd 2570 return $vmfw_configs;
5e1267a5
DM		 2571}
2572
2d404ffc
DM		 2573sub get_option_log_level {
2574 my ($options, $k) = @_;
2575
2576 my $v = $options->{$k};
178a63be 2577 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2578
2579 return undef if $v eq '' || $v eq 'nolog';
2580
2581 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2582
2583 return $v if ($v >= 0) && ($v <= 7);
2584
2585 warn "unknown log level ($k = '$v')\n";
2586
2587 return undef;
2588}
2589
d8f2505e 2590sub generate_std_chains {
2d404ffc 2591 my ($ruleset, $options) = @_;
cbb5d6f3 2592
2d404ffc
DM		 2593 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2594
2595 # same as shorewall smurflog.
782c4cde 2596 my $chain = 'PVEFW-smurflog';
12f3796e 2597 $pve_std_chains->{$chain} = [];
782c4cde
DM		 2598
2599 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2600 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 2601
2602 # same as shorewall logflags action.
2603 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2604 $chain = 'PVEFW-logflags';
12f3796e
DM		 2605 $pve_std_chains->{$chain} = [];
2606
782c4cde
DM		 2607 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2608 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2609 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 2610
2611 foreach my $chain (keys %$pve_std_chains) {
2612 ruleset_create_chain($ruleset, $chain);
2613 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2614 if (ref($rule)) {
2615 ruleset_generate_rule($ruleset, $chain, $rule);
2616 } else {
2617 ruleset_addrule($ruleset, $chain, $rule);
2618 }
2619 }
2620 }
2621}
2622
34cdedfa 2623sub generate_ipset_chains {
708ba714 2624 my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_;
34cdedfa 2625
dd7a13fd 2626 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
708ba714
DM		 2627 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $ipset);
2628 generate_ipset($ipset_ruleset, $ipset_chain, $fw_conf->{ipset}->{$ipset}, $clusterfw_conf, $fw_conf);
34cdedfa
AD		 2629 }
2630}
2631
2632sub generate_ipset {
708ba714
DM		 2633 my ($ipset_ruleset, $name, $options, $clusterfw_conf, $fw_conf) = @_;
2634
2635 die "duplicate ipset chain '$name'\n" if defined($ipset_ruleset->{$name});
34cdedfa 2636
dd7a13fd
DM		 2637 my $hashsize = scalar(@$options);
2638 if ($hashsize <= 64) {
2a052ee3 2639 $hashsize = 64;
dd7a13fd 2640 } else {
2a052ee3
AD		 2641 $hashsize = round_powerof2($hashsize);
2642 }
2643
708ba714 2644 $ipset_ruleset->{$name} = ["create $name hash:net family inet hashsize $hashsize maxelem $hashsize"];
34cdedfa 2645
30f1b100
DM		 2646 # remove duplicates
2647 my $nethash = {};
9d6f90e6 2648 foreach my $entry (@$options) {
c8c534f7 2649 next if $entry->{errors}; # skip entries with errors
6c221576
DM		 2650 eval {
2651 my $cidr = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
2652 $nethash->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
2653 };
2654 warn $@ if $@;
30f1b100
DM		 2655 }
2656
2657 foreach my $cidr (sort keys %$nethash) {
2658 my $entry = $nethash->{$cidr};
2659
9d6f90e6
DM		 2660 my $cmd = "add $name $cidr";
2661 if ($entry->{nomatch}) {
2662 if ($feature_ipset_nomatch) {
2663 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2664 } else {
2665 warn "ignore !$cidr - nomatch not supported by kernel\n";
2666 }
2667 } else {
2668 push @{$ipset_ruleset->{$name}}, $cmd;
2669 }
34cdedfa 2670 }
2a052ee3
AD		 2671}
2672
2673sub round_powerof2 {
dd7a13fd 2674 my ($int) = @_;
2a052ee3 2675
dd7a13fd
DM		 2676 $int--;
2677 $int |= $int >> $_ foreach (1,2,4,8,16);
2678 return ++$int;
34cdedfa
AD		 2679}
2680
fca39c2c 2681sub load_clusterfw_conf {
d4cda423 2682 my ($filename, $verbose) = @_;
8aef5177
DM		 2683
2684 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 2685
fca39c2c 2686 my $cluster_conf = {};
8aef5177 2687 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2688 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
51bae274 2689 }
5e1267a5 2690
fca39c2c 2691 return $cluster_conf;
e5d76bde
DM		 2692}
2693
fca39c2c
DM		 2694sub save_clusterfw_conf {
2695 my ($cluster_conf) = @_;
9c7e0858
DM		 2696
2697 my $raw = '';
9c7e0858 2698
c6f5cc88 2699 my $options = $cluster_conf->{options};
89ea63c8 2700 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 2701
0d5f0a0f 2702 my $aliases = $cluster_conf->{aliases};
89ea63c8 2703 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 2704
89ea63c8 2705 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
1210ae94 2706
c6f5cc88 2707 my $rules = $cluster_conf->{rules};
89ea63c8 2708 if ($rules && scalar(@$rules)) {
c6f5cc88 2709 $raw .= "[RULES]\n\n";
63c91681 2710 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2711 $raw .= "\n";
2712 }
2713
89ea63c8
DM		 2714 if ($cluster_conf->{groups}) {
2715 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2716 my $rules = $cluster_conf->{groups}->{$group};
2717 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
2718 my $utf8comment = encode('utf8', $comment);
2719 $raw .= "[group $group] # $utf8comment\n\n";
2720 } else {
2721 $raw .= "[group $group]\n\n";
2722 }
0d22acb3 2723
89ea63c8
DM		 2724 $raw .= &$format_rules($rules, 0);
2725 $raw .= "\n";
2726 }
9c7e0858
DM		 2727 }
2728
21053409 2729 mkdir $pvefw_conf_dir;
fca39c2c 2730 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2731}
2732
8b27beb9 2733sub load_hostfw_conf {
a523e057 2734 my ($cluster_conf, $filename, $verbose) = @_;
8aef5177
DM		 2735
2736 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 2737
2738 my $hostfw_conf = {};
8aef5177 2739 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 2740 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
8b27beb9
DM		 2741 }
2742 return $hostfw_conf;
2743}
2744
63c91681
DM		 2745sub save_hostfw_conf {
2746 my ($hostfw_conf) = @_;
2747
2748 my $raw = '';
2749
2750 my $options = $hostfw_conf->{options};
89ea63c8 2751 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 2752
63c91681 2753 my $rules = $hostfw_conf->{rules};
89ea63c8 2754 if ($rules && scalar(@$rules)) {
63c91681
DM		 2755 $raw .= "[RULES]\n\n";
2756 $raw .= &$format_rules($rules, 1);
2757 $raw .= "\n";
2758 }
2759
2760 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2761}
2762
e5d76bde 2763sub compile {
d4cda423 2764 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3dfa8a7f 2765
8aef5177
DM		 2766 my $vmfw_configs;
2767
2768 if ($vmdata) { # test mode
2769 my $testdir = $vmdata->{testdir} || die "no test directory specified";
2770 my $filename = "$testdir/cluster.fw";
d4cda423 2771 $cluster_conf = load_clusterfw_conf($filename, $verbose);
8aef5177
DM		 2772
2773 $filename = "$testdir/host.fw";
a523e057 2774 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
8aef5177 2775
a523e057 2776 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
8aef5177 2777 } else { # normal operation
d4cda423 2778 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
8aef5177 2779
a523e057 2780 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
8aef5177
DM		 2781
2782 $vmdata = read_local_vm_config();
a523e057 2783 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
8aef5177 2784 }
3dfa8a7f 2785
27083984 2786 $cluster_conf->{ipset}->{venet0} = [];
708ba714 2787 my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0');
bfc488f6 2788
525778d7
DM		 2789 my $localnet;
2790 if ($cluster_conf->{aliases}->{local_network}) {
2791 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2792 } else {
2793 $localnet = local_network() || '127.0.0.0/8';
2794 $cluster_conf->{aliases}->{local_network} = { cidr => $localnet };
2795 }
2796
2797 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 2798
085fd492
DM		 2799 return ({}, {}) if !$cluster_conf->{options}->{enable};
2800
3fa83edf
DM		 2801 my $ruleset = {};
2802
dec84fcd
DM		 2803 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2804 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2805
fadb13dd 2806 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 2807
8b27beb9 2808 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2809
88733a74
AD		 2810 # fixme: what log level should we use here?
2811 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2812
097820b0 2813 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 2814
708ba714 2815
e2943485 2816 ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
708ba714
DM		 2817 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
2818 ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
e2943485
DM		 2819
2820 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
2428e394 2821 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2822
d1b41c08 2823 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
e2943485
DM		 2824
2825 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
d1b41c08 2826 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
e2943485
DM		 2827
2828 ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
2428e394 2829 ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2830
708ba714 2831 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
e2943485 2832
92e976b3 2833 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 2834
6d2ab017 2835 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2836
708ba714
DM		 2837 my $ipset_ruleset = {};
2838
1a9978ed
DM		 2839 if ($hostfw_enable) {
2840 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf); };
2841 warn $@ if $@; # just to be sure - should not happen
2842 }
3fa83edf 2843
708ba714 2844 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
62689a1e 2845
6158271d 2846 # generate firewall rules for QEMU VMs
3fa83edf 2847 foreach my $vmid (keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 2848 eval {
2849 my $conf = $vmdata->{qemu}->{$vmid};
2850 my $vmfw_conf = $vmfw_configs->{$vmid};
2851 return if !$vmfw_conf;
2852 return if !$vmfw_conf->{options}->{enable};
2853
708ba714
DM		 2854 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
2855
1a9978ed
DM		 2856 foreach my $netid (keys %$conf) {
2857 next if $netid !~ m/^net(\d+)$/;
2858 my $net = PVE::QemuServer::parse_net($conf->{$netid});
2859 next if !$net->{firewall};
2860 my $iface = "tap${vmid}i$1";
2861
2862 my $macaddr = $net->{macaddr};
2863 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2864 $vmfw_conf, $vmid, 'IN');
2865 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2866 $vmfw_conf, $vmid, 'OUT');
2867 }
2868 };
2869 warn $@ if $@; # just to be sure - should not happen
3fa83edf 2870 }
c8301d63
DM		 2871
2872 # generate firewall rules for OpenVZ containers
2873 foreach my $vmid (keys %{$vmdata->{openvz}}) {
1a9978ed
DM		 2874 eval {
2875 my $conf = $vmdata->{openvz}->{$vmid};
c8301d63 2876
1a9978ed
DM		 2877 my $vmfw_conf = $vmfw_configs->{$vmid};
2878 return if !$vmfw_conf;
2879 return if !$vmfw_conf->{options}->{enable};
c8301d63 2880
708ba714
DM		 2881 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
2882
1a9978ed
DM		 2883 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2884 my $ip = $conf->{ip_address}->{value};
2885 $ip =~ s/\s+/,/g;
2886 parse_address_list($ip); # make sure we have a valid $ip list
27083984 2887
1a9978ed 2888 my @ips = split(',', $ip);
27083984 2889
1a9978ed
DM		 2890 foreach my $singleip (@ips) {
2891 my $venet0ipset = {};
2892 $venet0ipset->{cidr} = $singleip;
2893 push @{$cluster_conf->{ipset}->{venet0}}, $venet0ipset;
2894 }
c8301d63 2895
1a9978ed
DM		 2896 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN');
2897 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT');
2898 }
530c005e 2899
1a9978ed
DM		 2900 if ($conf->{netif} && $conf->{netif}->{value}) {
2901 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
2902 foreach my $netid (keys %$netif) {
2903 my $d = $netif->{$netid};
2904
2905 my $macaddr = $d->{mac};
2906 my $iface = $d->{host_ifname};
2907 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2908 $vmfw_conf, $vmid, 'IN');
2909 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2910 $vmfw_conf, $vmid, 'OUT');
2911 }
c8301d63 2912 }
1a9978ed
DM		 2913 };
2914 warn $@ if $@; # just to be sure - should not happen
c8301d63 2915 }
c0413e35 2916
097820b0
AD		 2917 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
2918 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
2919 }
2920
708ba714 2921 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
27083984 2922
3dfa8a7f 2923 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 2924}
2925
2926sub get_ruleset_status {
4bd0a9c4 2927 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 2928
2929 my $statushash = {};
2930
2931 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 2932 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 2933
3fa83edf
DM		 2934 $statushash->{$chain}->{sig} = $sig;
2935
2936 my $oldsig = $active_chains->{$chain};
2937 if (!defined($oldsig)) {
2938 $statushash->{$chain}->{action} = 'create';
2939 } else {
2940 if ($oldsig eq $sig) {
2941 $statushash->{$chain}->{action} = 'exists';
2942 } else {
2943 $statushash->{$chain}->{action} = 'update';
2944 }
2945 }
2946 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2947 foreach my $cmd (@{$ruleset->{$chain}}) {
2948 print "\t$cmd\n" if $verbose;
2949 }
2950 }
2951
2952 foreach my $chain (sort keys %$active_chains) {
2953 if (!defined($ruleset->{$chain})) {
2954 my $sig = $active_chains->{$chain};
2955 $statushash->{$chain}->{action} = 'delete';
2956 $statushash->{$chain}->{sig} = $sig;
2957 print "delete $chain ($sig)\n" if $verbose;
2958 }
6158271d 2959 }
2a052ee3 2960
3fa83edf
DM		 2961 return $statushash;
2962}
2963
3fa83edf
DM		 2964sub print_sig_rule {
2965 my ($chain, $sig) = @_;
2966
09d5f68e
DM		 2967 # We just use this to store a SHA1 checksum used to detect changes
2968 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2969}
2970
df7cb349 2971sub get_ruleset_cmdlist {
a84f4d96 2972 my ($ruleset, $verbose) = @_;
3fa83edf 2973
3fa83edf 2974 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 2975
4bd0a9c4
DM		 2976 my ($active_chains, $hooks) = iptables_get_chains();
2977 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 2978
2979 # create missing chains first
2980 foreach my $chain (sort keys %$ruleset) {
2981 my $stat = $statushash->{$chain};
2982 die "internal error" if !$stat;
2983 next if $stat->{action} ne 'create';
886aba9c 2984
3fa83edf
DM		 2985 $cmdlist .= ":$chain - [0:0]\n";
2986 }
2987
4bd0a9c4 2988 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
55fad3b7
DM		 2989 my $chain = "PVEFW-$h";
2990 if ($ruleset->{$chain} && !$hooks->{$h}) {
2991 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 2992 }
3fa83edf
DM		 2993 }
2994
2995 foreach my $chain (sort keys %$ruleset) {
2996 my $stat = $statushash->{$chain};
2997 die "internal error" if !$stat;
2998
2999 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
3000 $cmdlist .= "-F $chain\n";
3001 foreach my $cmd (@{$ruleset->{$chain}}) {
3002 $cmdlist .= "$cmd\n";
3003 }
3004 $cmdlist .= print_sig_rule($chain, $stat->{sig});
3005 } elsif ($stat->{action} eq 'delete') {
f5d28682 3006 die "internal error"; # this should not happen
3fa83edf
DM		 3007 } elsif ($stat->{action} eq 'exists') {
3008 # do nothing
3009 } else {
3010 die "internal error - unknown status '$stat->{action}'";
3011 }
3012 }
3013
f5d28682
DM		 3014 foreach my $chain (keys %$statushash) {
3015 next if $statushash->{$chain}->{action} ne 'delete';
3016 $cmdlist .= "-F $chain\n";
3017 }
3018 foreach my $chain (keys %$statushash) {
3019 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 3020 next if $chain eq 'PVEFW-INPUT';
3021 next if $chain eq 'PVEFW-OUTPUT';
3022 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 3023 $cmdlist .= "-X $chain\n";
3024 }
3025
3f95d14a 3026 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 3027
3fa83edf
DM		 3028 $cmdlist .= "COMMIT\n";
3029
3f95d14a 3030 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 3031}
3032
34cdedfa 3033sub get_ipset_cmdlist {
dd7a13fd 3034 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 3035
3036 my $cmdlist = "";
3037
dd7a13fd
DM		 3038 my $delete_cmdlist = "";
3039
4bd0a9c4
DM		 3040 my $active_chains = ipset_get_chains();
3041 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 3042
e34d0e58 3043 # remove stale _swap chains
30f1b100
DM		 3044 foreach my $chain (keys %$active_chains) {
3045 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3046 $cmdlist .= "destroy $chain\n";
3047 }
3048 }
3049
dd7a13fd
DM		 3050 foreach my $chain (sort keys %$ruleset) {
3051 my $stat = $statushash->{$chain};
3052 die "internal error" if !$stat;
2a052ee3 3053
dd7a13fd
DM		 3054 if ($stat->{action} eq 'create') {
3055 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 3056 $cmdlist .= "$cmd\n";
3057 }
dd7a13fd 3058 }
34cdedfa 3059
dd7a13fd
DM		 3060 if ($stat->{action} eq 'update') {
3061 my $chain_swap = $chain."_swap";
cbb5d6f3 3062
dd7a13fd
DM		 3063 foreach my $cmd (@{$ruleset->{$chain}}) {
3064 $cmd =~ s/$chain/$chain_swap/;
3065 $cmdlist .= "$cmd\n";
34cdedfa 3066 }
dd7a13fd
DM		 3067 $cmdlist .= "swap $chain_swap $chain\n";
3068 $cmdlist .= "flush $chain_swap\n";
3069 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 3070 }
34cdedfa 3071
dd7a13fd 3072 }
3f95d14a 3073
dd7a13fd
DM		 3074 foreach my $chain (keys %$statushash) {
3075 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 3076
dd7a13fd
DM		 3077 $delete_cmdlist .= "flush $chain\n";
3078 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 3079 }
3080
dd7a13fd 3081 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 3082
dd7a13fd 3083 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 3084}
3085
6b9f68a2 3086sub apply_ruleset {
34cdedfa 3087 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 3088
3089 enable_bridge_firewall();
3090
cbb5d6f3 3091 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 3092 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 3093
81a0bf43 3094 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 3095
81a0bf43
DM		 3096 if ($verbose) {
3097 if ($ipset_changes) {
3098 print "ipset changes:\n";
3099 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3100 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3101 }
3f95d14a 3102
81a0bf43
DM		 3103 if ($changes) {
3104 print "iptables changes:\n";
3105 print $cmdlist;
3106 }
3107 }
3fa83edf 3108
2a052ee3 3109 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 3110
3fa83edf
DM		 3111 iptables_restore_cmdlist($cmdlist);
3112
dd7a13fd 3113 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 3114
6158271d 3115 # test: re-read status and check if everything is up to date
4bd0a9c4 3116 my $active_chains = iptables_get_chains();
81a0bf43 3117 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 3118
3119 my $errors;
3120 foreach my $chain (sort keys %$ruleset) {
3121 my $stat = $statushash->{$chain};
3122 if ($stat->{action} ne 'exists') {
3123 warn "unable to update chain '$chain'\n";
3124 $errors = 1;
3125 }
3126 }
b6360c3f 3127
3fa83edf 3128 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 3129
3130 update_nf_conntrack_max($hostfw_conf);
3131
3132 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
3133
b6360c3f
DM		 3134}
3135
490cdead
DM		 3136sub update_nf_conntrack_max {
3137 my ($hostfw_conf) = @_;
3138
3139 my $max = 65536; # reasonable default
3140
3141 my $options = $hostfw_conf->{options} || {};
3142
3143 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
3144 $max = $options->{nf_conntrack_max};
3145 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3146 }
3147
3148 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3149 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3150
3151 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
3152
3153 if ($current != $max) {
3154 my $hashsize = int($max/4);
3155 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
3156 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
3157 }
3158}
3159
28c082a1
AD		 3160sub update_nf_conntrack_tcp_timeout_established {
3161 my ($hostfw_conf) = @_;
3162
3163 my $options = $hostfw_conf->{options} || {};
3164
3165 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
3166
3167 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3168}
3169
c4a2e5ae
DM		 3170sub remove_pvefw_chains {
3171
3172 my ($chash, $hooks) = iptables_get_chains();
3173 my $cmdlist = "*filter\n";
3174
3175 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3176 if ($hooks->{$h}) {
3177 $cmdlist .= "-D $h -j PVEFW-$h\n";
3178 }
3179 }
cbb5d6f3 3180
c4a2e5ae
DM		 3181 foreach my $chain (keys %$chash) {
3182 $cmdlist .= "-F $chain\n";
3183 }
3184
3185 foreach my $chain (keys %$chash) {
3186 $cmdlist .= "-X $chain\n";
3187 }
3188 $cmdlist .= "COMMIT\n";
3189
3190 iptables_restore_cmdlist($cmdlist);
55fad3b7
DM		 3191
3192 my $ipset_chains = ipset_get_chains();
3193
3194 $cmdlist = "";
3195
3196 foreach my $chain (keys %$ipset_chains) {
3197 $cmdlist .= "flush $chain\n";
3198 $cmdlist .= "destroy $chain\n";
3199 }
3200
3201 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 3202}
3203
8b453a09
DM		 3204sub init {
3205 my $cluster_conf = load_clusterfw_conf();
3206 my $cluster_options = $cluster_conf->{options};
3207 my $enable = $cluster_options->{enable};
3208
3209 return if !$enable;
3210
3211 # load required modules here
3212}
3213
6b9f68a2 3214sub update {
6b9f68a2 3215 my $code = sub {
3dfa8a7f
DM		 3216
3217 my $cluster_conf = load_clusterfw_conf();
3218 my $cluster_options = $cluster_conf->{options};
3219
55fad3b7 3220 if (!$cluster_options->{enable}) {
b22130d3 3221 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 3222 return;
3223 }
3224
3225 my $hostfw_conf = load_hostfw_conf();
3226
3227 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 3228
d4cda423 3229 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset);
6b9f68a2
DM		 3230 };
3231
3232 run_locked($code);
3233}
3234
b6360c3f 32351;
Firewall test scripts