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[pve-firewall.git] / src / PVE / Firewall.pm
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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";
fca39c2c
DM		 22my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw";
23
cbb5d6f3 24# dynamically include PVE::QemuServer and PVE::OpenVZ
d9fee004
DM		 25# to avoid dependency problems
26my $have_qemu_server;
27eval {
28 require PVE::QemuServer;
29 $have_qemu_server = 1;
30};
31
32my $have_pve_manager;
33eval {
34 require PVE::OpenVZ;
35 $have_pve_manager = 1;
36};
37
351052d1
DM		 38my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
39my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
40my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
41
42my $max_alias_name_length = 64;
43my $max_ipset_name_length = 64;
44my $max_group_name_length = 20;
45
009ee3ac
DM		 46PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr);
47sub pve_verify_ipv4_or_cidr {
48 my ($cidr, $noerr) = @_;
49
30f1b100 50 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
e34d0e58 51 return $cidr if Net::IP->new($cidr);
7c619bbb
DM		 52 return undef if $noerr;
53 die Net::IP::Error() . "\n";
54 }
55 return undef if $noerr;
56 die "value does not look like a valid IP address or CIDR network\n";
57}
58
59PVE::JSONSchema::register_format('IPv4orCIDRorAlias', \&pve_verify_ipv4_or_cidr_or_alias);
60sub pve_verify_ipv4_or_cidr_or_alias {
61 my ($cidr, $noerr) = @_;
62
63 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
64
65 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
66 return $cidr if Net::IP->new($cidr);
30f1b100
DM		 67 return undef if $noerr;
68 die Net::IP::Error() . "\n";
009ee3ac
DM		 69 }
70 return undef if $noerr;
71 die "value does not look like a valid IP address or CIDR network\n";
72}
73
e74a87f5
DM		 74PVE::JSONSchema::register_standard_option('ipset-name', {
75 description => "IP set name.",
76 type => 'string',
351052d1 77 pattern => $ipset_name_pattern,
387d0ffc 78 minLength => 2,
351052d1 79 maxLength => $max_ipset_name_length,
387d0ffc
DM		 80});
81
81d574a7
DM		 82PVE::JSONSchema::register_standard_option('pve-fw-alias', {
83 description => "Alias name.",
84 type => 'string',
351052d1 85 pattern => $ip_alias_pattern,
81d574a7 86 minLength => 2,
351052d1 87 maxLength => $max_alias_name_length,
81d574a7
DM		 88});
89
6302c41f
DM		 90PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
91 description => "Log level.",
e34d0e58 92 type => 'string',
6302c41f
DM		 93 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
94 optional => 1,
95});
96
387d0ffc
DM		 97PVE::JSONSchema::register_standard_option('pve-security-group-name', {
98 description => "Security Group name.",
99 type => 'string',
44be8ceb 100 pattern => $security_group_name_pattern,
387d0ffc 101 minLength => 2,
351052d1 102 maxLength => $max_group_name_length,
e74a87f5 103});
009ee3ac 104
cbb5d6f3
DM		 105my $feature_ipset_nomatch = 0;
106eval {
107 my (undef, undef, $release) = POSIX::uname();
108 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
109 my ($major, $minor) = ($1, $2);
110 $feature_ipset_nomatch = 1 if ($major > 3) ||
111 ($major == 3 && $minor >= 7);
112 }
113
114};
115
5e1267a5 116use Data::Dumper;
b6360c3f 117
c8301d63
DM		 118my $nodename = PVE::INotify::nodename();
119
06320eb0
DM		 120my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
121
56f313f7 122my $default_log_level = 'nolog'; # avoid logs by default
2d404ffc
DM		 123
124my $log_level_hash = {
125 debug => 7,
126 info => 6,
127 notice => 5,
128 warning => 4,
129 err => 3,
130 crit => 2,
131 alert => 1,
132 emerg => 0,
133};
134
857f62c8 135# imported/converted from: /usr/share/shorewall/macro.*
961b4928 136my $pve_fw_macros = {
857f62c8 137 'Amanda' => [
ebd54ae9 138 "Amanda Backup",
857f62c8
DM		 139 { action => 'PARAM', proto => 'udp', dport => '10080' },
140 { action => 'PARAM', proto => 'tcp', dport => '10080' },
141 ],
142 'Auth' => [
ebd54ae9 143 "Auth (identd) traffic",
857f62c8
DM		 144 { action => 'PARAM', proto => 'tcp', dport => '113' },
145 ],
146 'BGP' => [
ebd54ae9 147 "Border Gateway Protocol traffic",
857f62c8
DM		 148 { action => 'PARAM', proto => 'tcp', dport => '179' },
149 ],
150 'BitTorrent' => [
ebd54ae9 151 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 152 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 153 { action => 'PARAM', proto => 'udp', dport => '6881' },
154 ],
155 'BitTorrent32' => [
ebd54ae9 156 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 157 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
158 { action => 'PARAM', proto => 'udp', dport => '6881' },
159 ],
160 'CVS' => [
ebd54ae9 161 "Concurrent Versions System pserver traffic",
857f62c8
DM		 162 { action => 'PARAM', proto => 'tcp', dport => '2401' },
163 ],
164 'Citrix' => [
ebd54ae9 165 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 166 { action => 'PARAM', proto => 'tcp', dport => '1494' },
167 { action => 'PARAM', proto => 'udp', dport => '1604' },
168 { action => 'PARAM', proto => 'tcp', dport => '2598' },
169 ],
170 'DAAP' => [
ebd54ae9 171 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 172 { action => 'PARAM', proto => 'tcp', dport => '3689' },
173 { action => 'PARAM', proto => 'udp', dport => '3689' },
174 ],
175 'DCC' => [
ebd54ae9 176 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 177 { action => 'PARAM', proto => 'tcp', dport => '6277' },
178 ],
179 'DHCPfwd' => [
d2c3266d 180 "Forwarded DHCP traffic",
857f62c8 181 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 182 ],
183 'DNS' => [
ebd54ae9 184 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 185 { action => 'PARAM', proto => 'udp', dport => '53' },
186 { action => 'PARAM', proto => 'tcp', dport => '53' },
187 ],
188 'Distcc' => [
ebd54ae9 189 "Distributed Compiler service",
857f62c8
DM		 190 { action => 'PARAM', proto => 'tcp', dport => '3632' },
191 ],
857f62c8 192 'FTP' => [
ebd54ae9 193 "File Transfer Protocol",
857f62c8
DM		 194 { action => 'PARAM', proto => 'tcp', dport => '21' },
195 ],
196 'Finger' => [
ebd54ae9 197 "Finger protocol (RFC 742)",
857f62c8
DM		 198 { action => 'PARAM', proto => 'tcp', dport => '79' },
199 ],
200 'GNUnet' => [
ebd54ae9 201 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 202 { action => 'PARAM', proto => 'tcp', dport => '2086' },
203 { action => 'PARAM', proto => 'udp', dport => '2086' },
204 { action => 'PARAM', proto => 'tcp', dport => '1080' },
205 { action => 'PARAM', proto => 'udp', dport => '1080' },
206 ],
207 'GRE' => [
d2c3266d 208 "Generic Routing Encapsulation tunneling protocol",
857f62c8 209 { action => 'PARAM', proto => '47' },
857f62c8
DM		 210 ],
211 'Git' => [
ebd54ae9 212 "Git distributed revision control traffic",
857f62c8
DM		 213 { action => 'PARAM', proto => 'tcp', dport => '9418' },
214 ],
857f62c8 215 'HKP' => [
ebd54ae9 216 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 217 { action => 'PARAM', proto => 'tcp', dport => '11371' },
218 ],
219 'HTTP' => [
ebd54ae9 220 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 221 { action => 'PARAM', proto => 'tcp', dport => '80' },
222 ],
857f62c8 223 'HTTPS' => [
ebd54ae9 224 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 225 { action => 'PARAM', proto => 'tcp', dport => '443' },
226 ],
227 'ICPV2' => [
ebd54ae9 228 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 229 { action => 'PARAM', proto => 'udp', dport => '3130' },
230 ],
231 'ICQ' => [
ebd54ae9 232 "AOL Instant Messenger traffic",
857f62c8
DM		 233 { action => 'PARAM', proto => 'tcp', dport => '5190' },
234 ],
235 'IMAP' => [
ebd54ae9 236 "Internet Message Access Protocol",
857f62c8
DM		 237 { action => 'PARAM', proto => 'tcp', dport => '143' },
238 ],
239 'IMAPS' => [
ebd54ae9 240 "Internet Message Access Protocol over SSL",
857f62c8
DM		 241 { action => 'PARAM', proto => 'tcp', dport => '993' },
242 ],
243 'IPIP' => [
d2c3266d 244 "IPIP capsulation traffic",
857f62c8 245 { action => 'PARAM', proto => '94' },
857f62c8 246 ],
857f62c8 247 'IPsec' => [
d2c3266d 248 "IPsec traffic",
857f62c8
DM		 249 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
250 { action => 'PARAM', proto => '50' },
857f62c8
DM		 251 ],
252 'IPsecah' => [
d2c3266d 253 "IPsec authentication (AH) traffic",
857f62c8
DM		 254 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
255 { action => 'PARAM', proto => '51' },
857f62c8
DM		 256 ],
257 'IPsecnat' => [
d2c3266d 258 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 259 { action => 'PARAM', proto => 'udp', dport => '500' },
260 { action => 'PARAM', proto => 'udp', dport => '4500' },
261 { action => 'PARAM', proto => '50' },
857f62c8
DM		 262 ],
263 'IRC' => [
ebd54ae9 264 "Internet Relay Chat traffic",
857f62c8
DM		 265 { action => 'PARAM', proto => 'tcp', dport => '6667' },
266 ],
857f62c8 267 'Jetdirect' => [
ebd54ae9 268 "HP Jetdirect printing",
857f62c8
DM		 269 { action => 'PARAM', proto => 'tcp', dport => '9100' },
270 ],
271 'L2TP' => [
ebd54ae9 272 "Layer 2 Tunneling Protocol traffic",
857f62c8 273 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 274 ],
275 'LDAP' => [
ebd54ae9 276 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 277 { action => 'PARAM', proto => 'tcp', dport => '389' },
278 ],
279 'LDAPS' => [
ebd54ae9 280 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 281 { action => 'PARAM', proto => 'tcp', dport => '636' },
282 ],
283 'MSNP' => [
ebd54ae9 284 "Microsoft Notification Protocol",
857f62c8
DM		 285 { action => 'PARAM', proto => 'tcp', dport => '1863' },
286 ],
287 'MSSQL' => [
ebd54ae9 288 "Microsoft SQL Server",
857f62c8
DM		 289 { action => 'PARAM', proto => 'tcp', dport => '1433' },
290 ],
291 'Mail' => [
ebd54ae9 292 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 293 { action => 'PARAM', proto => 'tcp', dport => '25' },
294 { action => 'PARAM', proto => 'tcp', dport => '465' },
295 { action => 'PARAM', proto => 'tcp', dport => '587' },
296 ],
297 'Munin' => [
ebd54ae9 298 "Munin networked resource monitoring traffic",
857f62c8
DM		 299 { action => 'PARAM', proto => 'tcp', dport => '4949' },
300 ],
301 'MySQL' => [
ebd54ae9 302 "MySQL server",
857f62c8
DM		 303 { action => 'PARAM', proto => 'tcp', dport => '3306' },
304 ],
305 'NNTP' => [
ebd54ae9 306 "NNTP traffic (Usenet).",
857f62c8
DM		 307 { action => 'PARAM', proto => 'tcp', dport => '119' },
308 ],
309 'NNTPS' => [
ebd54ae9 310 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 311 { action => 'PARAM', proto => 'tcp', dport => '563' },
312 ],
313 'NTP' => [
ebd54ae9 314 "Network Time Protocol (ntpd)",
857f62c8
DM		 315 { action => 'PARAM', proto => 'udp', dport => '123' },
316 ],
857f62c8 317 'OSPF' => [
ebd54ae9 318 "OSPF multicast traffic",
857f62c8
DM		 319 { action => 'PARAM', proto => '89' },
320 ],
321 'OpenVPN' => [
ebd54ae9 322 "OpenVPN traffic",
857f62c8
DM		 323 { action => 'PARAM', proto => 'udp', dport => '1194' },
324 ],
325 'PCA' => [
ebd54ae9 326 "Symantec PCAnywere (tm)",
857f62c8
DM		 327 { action => 'PARAM', proto => 'udp', dport => '5632' },
328 { action => 'PARAM', proto => 'tcp', dport => '5631' },
329 ],
330 'POP3' => [
ebd54ae9 331 "POP3 traffic",
857f62c8
DM		 332 { action => 'PARAM', proto => 'tcp', dport => '110' },
333 ],
334 'POP3S' => [
ebd54ae9 335 "Encrypted POP3 traffic",
857f62c8
DM		 336 { action => 'PARAM', proto => 'tcp', dport => '995' },
337 ],
338 'PPtP' => [
ebd54ae9 339 "Point-to-Point Tunneling Protocol",
857f62c8 340 { action => 'PARAM', proto => '47' },
857f62c8
DM		 341 { action => 'PARAM', proto => 'tcp', dport => '1723' },
342 ],
343 'Ping' => [
ebd54ae9 344 "ICMP echo request",
269d4f13 345 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 346 ],
347 'PostgreSQL' => [
ebd54ae9 348 "PostgreSQL server",
857f62c8
DM		 349 { action => 'PARAM', proto => 'tcp', dport => '5432' },
350 ],
351 'Printer' => [
ebd54ae9 352 "Line Printer protocol printing",
857f62c8
DM		 353 { action => 'PARAM', proto => 'tcp', dport => '515' },
354 ],
355 'RDP' => [
ebd54ae9 356 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 357 { action => 'PARAM', proto => 'tcp', dport => '3389' },
358 ],
d2c3266d 359 'RIP' => [
ebd54ae9 360 "Routing Information Protocol (bidirectional)",
857f62c8 361 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 362 ],
363 'RNDC' => [
ebd54ae9 364 "BIND remote management protocol",
857f62c8
DM		 365 { action => 'PARAM', proto => 'tcp', dport => '953' },
366 ],
367 'Razor' => [
ebd54ae9 368 "Razor Antispam System",
857f62c8
DM		 369 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
370 ],
371 'Rdate' => [
ebd54ae9 372 "Remote time retrieval (rdate)",
857f62c8
DM		 373 { action => 'PARAM', proto => 'tcp', dport => '37' },
374 ],
375 'Rsync' => [
ebd54ae9 376 "Rsync server",
857f62c8
DM		 377 { action => 'PARAM', proto => 'tcp', dport => '873' },
378 ],
379 'SANE' => [
ebd54ae9 380 "SANE network scanning",
857f62c8
DM		 381 { action => 'PARAM', proto => 'tcp', dport => '6566' },
382 ],
383 'SMB' => [
ebd54ae9 384 "Microsoft SMB traffic",
857f62c8
DM		 385 { action => 'PARAM', proto => 'udp', dport => '135,445' },
386 { action => 'PARAM', proto => 'udp', dport => '137:139' },
387 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
388 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
389 ],
857f62c8 390 'SMBswat' => [
ebd54ae9 391 "Samba Web Administration Tool",
857f62c8
DM		 392 { action => 'PARAM', proto => 'tcp', dport => '901' },
393 ],
394 'SMTP' => [
ebd54ae9 395 "Simple Mail Transfer Protocol",
857f62c8
DM		 396 { action => 'PARAM', proto => 'tcp', dport => '25' },
397 ],
398 'SMTPS' => [
ebd54ae9 399 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 400 { action => 'PARAM', proto => 'tcp', dport => '465' },
401 ],
402 'SNMP' => [
ebd54ae9 403 "Simple Network Management Protocol",
857f62c8
DM		 404 { action => 'PARAM', proto => 'udp', dport => '161:162' },
405 { action => 'PARAM', proto => 'tcp', dport => '161' },
406 ],
407 'SPAMD' => [
ebd54ae9 408 "Spam Assassin SPAMD traffic",
857f62c8
DM		 409 { action => 'PARAM', proto => 'tcp', dport => '783' },
410 ],
411 'SSH' => [
ebd54ae9 412 "Secure shell traffic",
857f62c8
DM		 413 { action => 'PARAM', proto => 'tcp', dport => '22' },
414 ],
415 'SVN' => [
ebd54ae9 416 "Subversion server (svnserve)",
857f62c8
DM		 417 { action => 'PARAM', proto => 'tcp', dport => '3690' },
418 ],
419 'SixXS' => [
ebd54ae9 420 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 421 { action => 'PARAM', proto => 'tcp', dport => '3874' },
422 { action => 'PARAM', proto => 'udp', dport => '3740' },
423 { action => 'PARAM', proto => '41' },
424 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
425 ],
426 'Squid' => [
ebd54ae9 427 "Squid web proxy traffic",
857f62c8
DM		 428 { action => 'PARAM', proto => 'tcp', dport => '3128' },
429 ],
430 'Submission' => [
ebd54ae9 431 "Mail message submission traffic",
857f62c8
DM		 432 { action => 'PARAM', proto => 'tcp', dport => '587' },
433 ],
434 'Syslog' => [
ebd54ae9 435 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 436 { action => 'PARAM', proto => 'udp', dport => '514' },
437 { action => 'PARAM', proto => 'tcp', dport => '514' },
438 ],
439 'TFTP' => [
ebd54ae9 440 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 441 { action => 'PARAM', proto => 'udp', dport => '69' },
442 ],
443 'Telnet' => [
ebd54ae9 444 "Telnet traffic",
857f62c8
DM		 445 { action => 'PARAM', proto => 'tcp', dport => '23' },
446 ],
447 'Telnets' => [
ebd54ae9 448 "Telnet over SSL",
857f62c8
DM		 449 { action => 'PARAM', proto => 'tcp', dport => '992' },
450 ],
451 'Time' => [
ebd54ae9 452 "RFC 868 Time protocol",
857f62c8
DM		 453 { action => 'PARAM', proto => 'tcp', dport => '37' },
454 ],
455 'Trcrt' => [
ebd54ae9 456 "Traceroute (for up to 30 hops) traffic",
857f62c8 457 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 458 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 459 ],
460 'VNC' => [
93be4333
DM		 461 "VNC traffic for VNC display's 0 - 99",
462 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 463 ],
464 'VNCL' => [
ebd54ae9 465 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 466 { action => 'PARAM', proto => 'tcp', dport => '5500' },
467 ],
468 'Web' => [
ebd54ae9 469 "WWW traffic (HTTP and HTTPS)",
857f62c8 470 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 471 { action => 'PARAM', proto => 'tcp', dport => '443' },
472 ],
857f62c8 473 'Webcache' => [
ebd54ae9 474 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 475 { action => 'PARAM', proto => 'tcp', dport => '8080' },
476 ],
477 'Webmin' => [
ebd54ae9 478 "Webmin traffic",
857f62c8
DM		 479 { action => 'PARAM', proto => 'tcp', dport => '10000' },
480 ],
481 'Whois' => [
ebd54ae9 482 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 483 { action => 'PARAM', proto => 'tcp', dport => '43' },
484 ],
961b4928
DM		 485};
486
487my $pve_fw_parsed_macros;
ebd54ae9 488my $pve_fw_macro_descr;
961b4928 489my $pve_fw_preferred_macro_names = {};
3a616aa0 490
d8f2505e
DM		 491my $pve_std_chains = {
492 'PVEFW-SET-ACCEPT-MARK' => [
493 "-j MARK --set-mark 1",
494 ],
79929d9c
DM		 495 'PVEFW-DropBroadcast' => [
496 # same as shorewall 'Broadcast'
497 # simply DROP BROADCAST/MULTICAST/ANYCAST
498 # we can use this to reduce logging
499 { action => 'DROP', dsttype => 'BROADCAST' },
500 { action => 'DROP', dsttype => 'MULTICAST' },
501 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 502 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 503 ],
504 'PVEFW-reject' => [
505 # same as shorewall 'reject'
506 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 507 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 508 { action => 'DROP', proto => 'icmp' },
509 "-p tcp -j REJECT --reject-with tcp-reset",
510 "-p udp -j REJECT --reject-with icmp-port-unreachable",
511 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
512 "-j REJECT --reject-with icmp-host-prohibited",
513 ],
514 'PVEFW-Drop' => [
cbb5d6f3 515 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 516 # but REJECT/DROP some packages to reduce logging,
517 # and ACCEPT critical ICMP types
518 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
519 # we are not interested in BROADCAST/MULTICAST/ANYCAST
520 { action => 'PVEFW-DropBroadcast' },
521 # ACCEPT critical ICMP types
522 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
523 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
524 # Drop packets with INVALID state
525 "-m conntrack --ctstate INVALID -j DROP",
526 # Drop Microsoft SMB noise
527 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
528 { action => 'DROP', proto => 'udp', dport => '137:139'},
529 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
530 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
531 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
532 # Drop new/NotSyn traffic so that it doesn't get logged
533 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
534 # Drop DNS replies
535 { action => 'DROP', proto => 'udp', sport => 53 },
536 ],
537 'PVEFW-Reject' => [
cbb5d6f3 538 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 539 # but REJECT/DROP some packages to reduce logging,
540 # and ACCEPT critical ICMP types
541 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
542 # we are not interested in BROADCAST/MULTICAST/ANYCAST
543 { action => 'PVEFW-DropBroadcast' },
544 # ACCEPT critical ICMP types
545 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
546 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
547 # Drop packets with INVALID state
548 "-m conntrack --ctstate INVALID -j DROP",
549 # Drop Microsoft SMB noise
550 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
551 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
552 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
553 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
554 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
555 # Drop new/NotSyn traffic so that it doesn't get logged
556 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
557 # Drop DNS replies
558 { action => 'DROP', proto => 'udp', sport => 53 },
559 ],
d86659ef
DM		 560 'PVEFW-tcpflags' => [
561 # same as shorewall tcpflags action.
562 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
563 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
564 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
565 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
566 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
567 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
568 ],
bee633ab
DM		 569 'PVEFW-smurfs' => [
570 # same as shorewall smurfs action
571 # Filter packets for smurfs (packets with a broadcast address as the source).
572 "-s 0.0.0.0/32 -j RETURN",
573 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
574 "-s 224.0.0.0/4 -g PVEFW-smurflog",
575 ],
d8f2505e
DM		 576};
577
4b586518
DM		 578# iptables -p icmp -h
579my $icmp_type_names = {
580 any => 1,
581 'echo-reply' => 1,
582 'destination-unreachable' => 1,
583 'network-unreachable' => 1,
584 'host-unreachable' => 1,
585 'protocol-unreachable' => 1,
586 'port-unreachable' => 1,
587 'fragmentation-needed' => 1,
588 'source-route-failed' => 1,
589 'network-unknown' => 1,
590 'host-unknown' => 1,
591 'network-prohibited' => 1,
592 'host-prohibited' => 1,
593 'TOS-network-unreachable' => 1,
594 'TOS-host-unreachable' => 1,
595 'communication-prohibited' => 1,
596 'host-precedence-violation' => 1,
597 'precedence-cutoff' => 1,
598 'source-quench' => 1,
599 'redirect' => 1,
600 'network-redirect' => 1,
601 'host-redirect' => 1,
602 'TOS-network-redirect' => 1,
603 'TOS-host-redirect' => 1,
604 'echo-request' => 1,
605 'router-advertisement' => 1,
606 'router-solicitation' => 1,
607 'time-exceeded' => 1,
608 'ttl-zero-during-transit' => 1,
609 'ttl-zero-during-reassembly' => 1,
610 'parameter-problem' => 1,
611 'ip-header-bad' => 1,
612 'required-option-missing' => 1,
613 'timestamp-request' => 1,
614 'timestamp-reply' => 1,
615 'address-mask-request' => 1,
616 'address-mask-reply' => 1,
617};
618
54cd19a8 619sub init_firewall_macros {
6158271d 620
961b4928 621 $pve_fw_parsed_macros = {};
9aab3127 622
961b4928 623 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 624 my $lc_name = lc($k);
625 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 626 if (!ref($macro->[0])) {
627 $pve_fw_macro_descr->{$k} = shift @$macro;
628 }
e5076eee
DM		 629 $pve_fw_preferred_macro_names->{$lc_name} = $k;
630 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 631 }
9aab3127
DM		 632}
633
54cd19a8
DM		 634init_firewall_macros();
635
ebd54ae9
DM		 636sub get_macros {
637 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
638}
639
fcba0beb
DM		 640my $etc_services;
641
642sub get_etc_services {
643
644 return $etc_services if $etc_services;
645
646 my $filename = "/etc/services";
647
648 my $fh = IO::File->new($filename, O_RDONLY);
649 if (!$fh) {
650 warn "unable to read '$filename' - $!\n";
651 return {};
652 }
653
654 my $services = {};
655
656 while (my $line = <$fh>) {
657 chomp ($line);
658 next if $line =~m/^#/;
659 next if ($line =~m/^\s*$/);
660
661 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
662 $services->{byid}->{$2}->{name} = $1;
35b66e9d 663 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 664 $services->{byid}->{$2}->{$3} = 1;
665 $services->{byname}->{$1} = $services->{byid}->{$2};
666 }
667 }
668
669 close($fh);
670
6158271d
DM		 671 $etc_services = $services;
672
3a616aa0 673
fcba0beb
DM		 674 return $etc_services;
675}
676
677my $etc_protocols;
678
679sub get_etc_protocols {
680 return $etc_protocols if $etc_protocols;
681
682 my $filename = "/etc/protocols";
683
684 my $fh = IO::File->new($filename, O_RDONLY);
685 if (!$fh) {
686 warn "unable to read '$filename' - $!\n";
687 return {};
688 }
689
690 my $protocols = {};
691
692 while (my $line = <$fh>) {
693 chomp ($line);
694 next if $line =~m/^#/;
695 next if ($line =~m/^\s*$/);
696
697 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
698 $protocols->{byid}->{$2}->{name} = $1;
699 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
700 }
701 }
702
703 close($fh);
704
705 $etc_protocols = $protocols;
706
707 return $etc_protocols;
708}
709
525778d7 710my $ipv4_mask_hash_localnet = {
93be4333
DM		 711 '255.255.0.0' => 16,
712 '255.255.128.0' => 17,
713 '255.255.192.0' => 18,
714 '255.255.224.0' => 19,
715 '255.255.240.0' => 20,
716 '255.255.248.0' => 21,
717 '255.255.252.0' => 22,
718 '255.255.254.0' => 23,
719 '255.255.255.0' => 24,
720 '255.255.255.128' => 25,
721 '255.255.255.192' => 26,
722 '255.255.255.224' => 27,
723 '255.255.255.240' => 28,
724 '255.255.255.248' => 29,
725 '255.255.255.252' => 30,
726};
727
525778d7 728my $__local_network;
93be4333 729
525778d7 730sub local_network {
ac633d30 731 my ($new_value) = @_;
93be4333 732
525778d7 733 $__local_network = $new_value if defined($new_value);
ac633d30 734
525778d7 735 return $__local_network if defined($__local_network);
93be4333
DM		 736
737 eval {
738 my $nodename = PVE::INotify::nodename();
739
740 my $ip = PVE::Cluster::remote_node_ip($nodename);
741
742 my $testip = Net::IP->new($ip);
bfc488f6 743
93be4333
DM		 744 my $routes = PVE::ProcFSTools::read_proc_net_route();
745 foreach my $entry (@$routes) {
525778d7 746 my $mask = $ipv4_mask_hash_localnet->{$entry->{mask}};
93be4333
DM		 747 next if !defined($mask);
748 return if $mask eq '0.0.0.0';
749 my $cidr = "$entry->{dest}/$mask";
750 my $testnet = Net::IP->new($cidr);
751 if ($testnet->overlaps($testip)) {
525778d7 752 $__local_network = $cidr;
93be4333
DM		 753 return;
754 }
755 }
756 };
757 warn $@ if $@;
758
525778d7 759 return $__local_network;
93be4333
DM		 760}
761
e2c62733 762my $max_iptables_ipset_name_length = 27;
708ba714
DM		 763
764sub compute_ipset_chain_name {
765 my ($vmid, $ipset_name) = @_;
766
767 $vmid = 0 if !defined($vmid);
768
769 my $id = "$vmid-${ipset_name}";
770
771
e2c62733 772 if ((length($id) + 6) > $max_iptables_ipset_name_length) {
708ba714
DM		 773 $id = PVE::Tools::fnv31a_hex($id);
774 }
775
776 return "PVEFW-$id";
777}
778
ecbea048
DM		 779sub parse_address_list {
780 my ($str) = @_;
781
e2c62733
DM		 782 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
783 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
784 return;
785 }
786
787 if ($str =~ m/^${ip_alias_pattern}$/) {
788 die "alias name too long\n" if length($str) > $max_alias_name_length;
789 return;
790 }
d72beb8e 791
3162af6b
DM		 792 my $count = 0;
793 my $iprange = 0;
794 foreach my $elem (split(/,/, $str)) {
795 $count++;
796 if (!Net::IP->new($elem)) {
ecbea048
DM		 797 my $err = Net::IP::Error();
798 die "invalid IP address: $err\n";
799 }
3162af6b 800 $iprange = 1 if $elem =~ m/-/;
ecbea048 801 }
e34d0e58 802
3162af6b 803 die "you can use a range in a list\n" if $iprange && $count > 1;
ecbea048 804}
dddd9413 805
fcba0beb
DM		 806sub parse_port_name_number_or_range {
807 my ($str) = @_;
808
809 my $services = PVE::Firewall::get_etc_services();
7ca36671 810 my $count = 0;
041b7e8e
DM		 811 my $icmp_port = 0;
812
fcba0beb 813 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 814 $count++;
815 if ($item =~ m/^(\d+):(\d+)$/) {
816 my ($port1, $port2) = ($1, $2);
817 die "invalid port '$port1'\n" if $port1 > 65535;
818 die "invalid port '$port2'\n" if $port2 > 65535;
819 } elsif ($item =~ m/^(\d+)$/) {
820 my $port = $1;
821 die "invalid port '$port'\n" if $port > 65535;
822 } else {
041b7e8e
DM		 823 if ($icmp_type_names->{$item}) {
824 $icmp_port = 1;
825 } else {
e34d0e58 826 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 827 }
fcba0beb
DM		 828 }
829 }
830
041b7e8e
DM		 831 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
832
7ca36671 833 return $count;
fcba0beb
DM		 834}
835
54cd19a8
DM		 836PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
837sub pve_fw_verify_port_spec {
838 my ($portstr) = @_;
839
7ca36671 840 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 841
842 return $portstr;
843}
844
845PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec);
846sub pve_fw_verify_v4addr_spec {
847 my ($list) = @_;
848
849 parse_address_list($list);
850
851 return $list;
852}
853
854PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
855sub pve_fw_verify_protocol_spec {
856 my ($proto) = @_;
857
858 my $protocols = get_etc_protocols();
859
860 die "unknown protocol '$proto'\n" if $proto &&
861 !(defined($protocols->{byname}->{$proto}) ||
862 defined($protocols->{byid}->{$proto}));
863
864 return $proto;
865}
866
867
d1c53b3e 868# helper function for API
d1c53b3e 869
5d38d64f
DM		 870sub copy_opject_with_digest {
871 my ($object) = @_;
872
873 my $sha = Digest::SHA->new('sha1');
874
875 my $res = {};
876 foreach my $k (sort keys %$object) {
877 my $v = $object->{$k};
0365eb68 878 next if !defined($v);
5d38d64f
DM		 879 $res->{$k} = $v;
880 $sha->add($k, ':', $v, "\n");
881 }
882
55e686c7 883 my $digest = $sha->hexdigest;
5d38d64f
DM		 884
885 $res->{digest} = $digest;
886
887 return wantarray ? ($res, $digest) : $res;
888}
889
890sub copy_list_with_digest {
891 my ($list) = @_;
892
893 my $sha = Digest::SHA->new('sha1');
894
895 my $res = [];
896 foreach my $entry (@$list) {
897 my $data = {};
898 foreach my $k (sort keys %$entry) {
899 my $v = $entry->{$k};
0365eb68 900 next if !defined($v);
5d38d64f 901 $data->{$k} = $v;
6d9246e7
DM		 902 # Note: digest ignores refs ($rule->{errors})
903 $sha->add($k, ':', $v, "\n") if !ref($v); ;
5d38d64f
DM		 904 }
905 push @$res, $data;
906 }
907
55e686c7 908 my $digest = $sha->hexdigest;
5d38d64f
DM		 909
910 foreach my $entry (@$res) {
911 $entry->{digest} = $digest;
912 }
913
914 return wantarray ? ($res, $digest) : $res;
915}
916
9c7e0858
DM		 917my $rule_properties = {
918 pos => {
919 description => "Update rule at position <pos>.",
920 type => 'integer',
921 minimum => 0,
922 optional => 1,
923 },
c71e785f 924 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 925 type => {
926 type => 'string',
927 optional => 1,
928 enum => ['in', 'out', 'group'],
929 },
930 action => {
c14dacdf 931 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 932 type => 'string',
933 optional => 1,
44be8ceb 934 pattern => $security_group_name_pattern,
c14dacdf
DM		 935 maxLength => 20,
936 minLength => 2,
9c7e0858 937 },
e5076eee
DM		 938 macro => {
939 type => 'string',
940 optional => 1,
54cd19a8 941 maxLength => 128,
e5076eee 942 },
54cd19a8 943 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 944 source => {
54cd19a8 945 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 946 optional => 1,
947 },
948 dest => {
54cd19a8 949 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 950 optional => 1,
951 },
952 proto => {
54cd19a8 953 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 954 optional => 1,
955 },
956 enable => {
957 type => 'boolean',
958 optional => 1,
959 },
960 sport => {
54cd19a8 961 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 962 optional => 1,
963 },
964 dport => {
54cd19a8 965 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 966 optional => 1,
967 },
968 comment => {
969 type => 'string',
970 optional => 1,
971 },
972};
973
974sub add_rule_properties {
975 my ($properties) = @_;
976
977 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 978 my $h = $rule_properties->{$k};
979 # copy data, so that we can modify later without side effects
980 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 981 }
cbb5d6f3 982
9c7e0858
DM		 983 return $properties;
984}
985
5b7974df
DM		 986sub delete_rule_properties {
987 my ($rule, $delete_str) = @_;
e34d0e58 988
5b7974df
DM		 989 foreach my $opt (PVE::Tools::split_list($delete_str)) {
990 raise_param_exc({ 'delete' => "no such property ('$opt')"})
991 if !defined($rule_properties->{$opt});
992 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
993 if $opt eq 'type' || $opt eq 'action';
994 delete $rule->{$opt};
995 }
996
997 return $rule;
998}
999
9a2745a0
DM		 1000my $apply_macro = sub {
1001 my ($macro_name, $param, $verify) = @_;
1002
1003 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1004 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1005
1006 my $rules = [];
1007
1008 foreach my $templ (@$macro_rules) {
1009 my $rule = {};
1010 my $param_used = {};
1011 foreach my $k (keys %$templ) {
1012 my $v = $templ->{$k};
1013 if ($v eq 'PARAM') {
1014 $v = $param->{$k};
1015 $param_used->{$k} = 1;
1016 } elsif ($v eq 'DEST') {
1017 $v = $param->{dest};
1018 $param_used->{dest} = 1;
1019 } elsif ($v eq 'SOURCE') {
1020 $v = $param->{source};
1021 $param_used->{source} = 1;
1022 }
1023
1024 if (!defined($v)) {
1025 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1026 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1027 die "$msg\n";
1028 }
1029 $rule->{$k} = $v;
1030 }
1031 foreach my $k (keys %$param) {
1032 next if $k eq 'macro';
1033 next if !defined($param->{$k});
1034 next if $param_used->{$k};
1035 if (defined($rule->{$k})) {
1036 if ($rule->{$k} ne $param->{$k}) {
1037 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1038 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1039 die "$msg\n";
1040 }
1041 } else {
1042 $rule->{$k} = $param->{$k};
1043 }
1044 }
1045 push @$rules, $rule;
1046 }
1047
1048 return $rules;
1049};
1050
b6b8e6ad
DM		 1051my $rule_env_iface_lookup = {
1052 'ct' => 1,
1053 'vm' => 1,
1054 'group' => 0,
1055 'cluster' => 1,
1056 'host' => 1,
1057};
1058
7ca36671 1059sub verify_rule {
a523e057 1060 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1061
1062 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1063
b6b8e6ad
DM		 1064 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1065 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1066
a523e057
DM		 1067 my $errors = $rule->{errors} || {};
1068
6d9246e7 1069 my $error_count = 0;
7ca36671 1070
6d9246e7
DM		 1071 my $add_error = sub {
1072 my ($param, $msg) = @_;
d4cda423 1073 chomp $msg;
6d9246e7
DM		 1074 raise_param_exc({ $param => $msg }) if !$noerr;
1075 $error_count++;
1076 $errors->{$param} = $msg if !$errors->{$param};
1077 };
1078
a523e057
DM		 1079 my $check_ipset_or_alias_property = sub {
1080 my ($name) = @_;
1081
1082 if (my $value = $rule->{$name}) {
1083 if ($value =~ m/^\+/) {
4dfe04e6 1084 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1085 &$add_error($name, "no such ipset '$1'")
a523e057 1086 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1087
a523e057 1088 } else {
351052d1 1089 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1090 }
1091 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1092 my $alias = lc($value);
bfc488f6 1093 &$add_error($name, "no such alias '$value'")
a523e057
DM		 1094 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}))
1095 }
1096 }
1097 };
1098
6d9246e7
DM		 1099 my $type = $rule->{type};
1100 my $action = $rule->{action};
bfc488f6 1101
6d9246e7
DM		 1102 &$add_error('type', "missing property") if !$type;
1103 &$add_error('action', "missing property") if !$action;
1104
1105 if ($type) {
1106 if ($type eq 'in' || $type eq 'out') {
1107 &$add_error('action', "unknown action '$action'")
1108 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1109 } elsif ($type eq 'group') {
1110 &$add_error('type', "security groups not allowed")
1111 if !$allow_groups;
1112 &$add_error('action', "invalid characters in security group name")
1113 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1114 } else {
1115 &$add_error('type', "unknown rule type '$type'");
1116 }
7ca36671 1117 }
e34d0e58 1118
dba740a9 1119 if ($rule->{iface}) {
bfc488f6 1120 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1121 if !$allow_iface;
dba740a9 1122 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1123 &$add_error('iface', $@) if $@;
b6b8e6ad
DM		 1124 if ($rule_env eq 'vm') {
1125 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1126 if $rule->{iface} !~ m/^net(\d+)$/;
1127 } elsif ($rule_env eq 'ct') {
1128 &$add_error('iface', "value does not match the regex pattern '(venet|eth\\d+)'")
1129 if $rule->{iface} !~ m/^(venet|eth(\d+))$/;
1130 }
1131 }
7ca36671
DM		 1132
1133 if ($rule->{macro}) {
6d9246e7
DM		 1134 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1135 $rule->{macro} = $preferred_name;
1136 } else {
1137 &$add_error('macro', "unknown macro '$rule->{macro}'");
1138 }
1139 }
1140
1141 if ($rule->{proto}) {
1142 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1143 &$add_error('proto', $@) if $@;
1144 }
7ca36671
DM		 1145
1146 if ($rule->{dport}) {
1147 eval { parse_port_name_number_or_range($rule->{dport}); };
6d9246e7
DM		 1148 &$add_error('dport', $@) if $@;
1149 &$add_error('proto', "missing property - 'dport' requires this property")
914f9a50 1150 if !$rule->{proto};
6d9246e7 1151 }
7ca36671
DM		 1152
1153 if ($rule->{sport}) {
1154 eval { parse_port_name_number_or_range($rule->{sport}); };
6d9246e7
DM		 1155 &$add_error('sport', $@) if $@;
1156 &$add_error('proto', "missing property - 'sport' requires this property")
914f9a50 1157 if !$rule->{proto};
7ca36671
DM		 1158 }
1159
1160 if ($rule->{source}) {
1161 eval { parse_address_list($rule->{source}); };
6d9246e7 1162 &$add_error('source', $@) if $@;
a523e057 1163 &$check_ipset_or_alias_property('source');
7ca36671
DM		 1164 }
1165
1166 if ($rule->{dest}) {
1167 eval { parse_address_list($rule->{dest}); };
6d9246e7 1168 &$add_error('dest', $@) if $@;
a523e057 1169 &$check_ipset_or_alias_property('dest');
7ca36671
DM		 1170 }
1171
a523e057 1172 if ($rule->{macro} && !$error_count) {
6d9246e7
DM		 1173 eval { &$apply_macro($rule->{macro}, $rule, 1); };
1174 if (my $err = $@) {
1175 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1176 my $eh = $err->{errors};
1177 foreach my $p (keys %$eh) {
1178 &$add_error($p, $eh->{$p});
1179 }
1180 } else {
1181 &$add_error('macro', "$err");
1182 }
1183 }
9a2745a0
DM		 1184 }
1185
6d9246e7
DM		 1186 $rule->{errors} = $errors if $error_count;
1187
7ca36671
DM		 1188 return $rule;
1189}
1190
9c7e0858
DM		 1191sub copy_rule_data {
1192 my ($rule, $param) = @_;
1193
1194 foreach my $k (keys %$rule_properties) {
1195 if (defined(my $v = $param->{$k})) {
1196 if ($v eq '' || $v eq '-') {
1197 delete $rule->{$k};
1198 } else {
1199 $rule->{$k} = $v;
1200 }
9c7e0858
DM		 1201 }
1202 }
7ca36671 1203
9c7e0858
DM		 1204 return $rule;
1205}
1206
1207# core functions
780bcc0f
DM		 1208my $bridge_firewall_enabled = 0;
1209
1210sub enable_bridge_firewall {
1211
1212 return if $bridge_firewall_enabled; # only once
1213
5f0a912c
DM		 1214 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1215 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1216
6a8a75db
DM		 1217 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1218 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1219
780bcc0f
DM		 1220 $bridge_firewall_enabled = 1;
1221}
1222
8cebfa6f 1223my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1224
b16e818e
DM		 1225sub iptables_restore_cmdlist {
1226 my ($cmdlist) = @_;
3a616aa0 1227
3fa83edf 1228 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 1229}
1230
34cdedfa
AD		 1231sub ipset_restore_cmdlist {
1232 my ($cmdlist) = @_;
1233
dd7a13fd 1234 run_command("/usr/sbin/ipset restore", input => $cmdlist);
34cdedfa
AD		 1235}
1236
de2a57cd
DM		 1237sub iptables_get_chains {
1238
1239 my $res = {};
1240
1241 # check what chains we want to track
1242 my $is_pvefw_chain = sub {
1243 my $name = shift;
1244
dec84fcd
DM		 1245 return 1 if $name =~ m/^PVEFW-\S+$/;
1246
de2a57cd 1247 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1248
1249 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1250
9e15114a
DM		 1251 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1252
a01c32c7 1253 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1254 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1255
1256 return undef;
1257 };
1258
1259 my $table = '';
1260
c4a2e5ae
DM		 1261 my $hooks = {};
1262
de2a57cd
DM		 1263 my $parser = sub {
1264 my $line = shift;
1265
1266 return if $line =~ m/^#/;
1267 return if $line =~ m/^\s*$/;
1268
1269 if ($line =~ m/^\*(\S+)$/) {
1270 $table = $1;
1271 return;
1272 }
1273
1274 return if $table ne 'filter';
1275
1276 if ($line =~ m/^:(\S+)\s/) {
1277 my $chain = $1;
1278 return if !&$is_pvefw_chain($chain);
3fa83edf 1279 $res->{$chain} = "unknown";
09d5f68e 1280 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1281 my ($chain, $sig) = ($1, $2);
de2a57cd 1282 return if !&$is_pvefw_chain($chain);
3fa83edf 1283 $res->{$chain} = $sig;
c4a2e5ae
DM		 1284 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1285 $hooks->{$1} = 1;
de2a57cd
DM		 1286 } else {
1287 # simply ignore the rest
1288 return;
1289 }
1290 };
1291
1292 run_command("/sbin/iptables-save", outfunc => $parser);
1293
c4a2e5ae 1294 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1295}
1296
9bf7d929
DM		 1297sub iptables_chain_digest {
1298 my ($rules) = @_;
1299 my $digest = Digest::SHA->new('sha1');
1300 foreach my $rule (@$rules) { # order is important
1301 $digest->add($rule);
1302 }
1303 return $digest->b64digest;
1304}
1305
3f95d14a
DM		 1306sub ipset_chain_digest {
1307 my ($rules) = @_;
4bd0a9c4 1308
3f95d14a
DM		 1309 my $digest = Digest::SHA->new('sha1');
1310 foreach my $rule (sort @$rules) { # note: sorted
1311 $digest->add($rule);
1312 }
1313 return $digest->b64digest;
1314}
1315
34cdedfa
AD		 1316sub ipset_get_chains {
1317
1318 my $res = {};
1319 my $chains = {};
1320
1321 my $parser = sub {
1322 my $line = shift;
1323
1324 return if $line =~ m/^#/;
1325 return if $line =~ m/^\s*$/;
4b96e877 1326 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1327 my $chain = $1;
1328 $line =~ s/\s+$//; # delete trailing white space
1329 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1330 } else {
1331 # simply ignore the rest
1332 return;
1333 }
1334 };
1335
3f95d14a 1336 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1337
3f95d14a
DM		 1338 # compute digest for each chain
1339 foreach my $chain (keys %$chains) {
1340 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1341 }
1342
1343 return $res;
1344}
1345
eba0fb64 1346sub ruleset_generate_cmdstr {
e523d2bb 1347 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
3a616aa0 1348
00bb4391 1349 return if defined($rule->{enable}) && !$rule->{enable};
6d9246e7 1350 return if $rule->{errors};
11bac5c2 1351
e5076eee
DM		 1352 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1353
1354 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1355 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1356
41524a58 1357 my @cmd = ();
3a616aa0 1358
eba0fb64
DM		 1359 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1360 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1361
ba791b1f
AD		 1362 my $source = $rule->{source};
1363 my $dest = $rule->{dest};
1364
cbb5d6f3 1365 if ($source) {
44be8ceb 1366 if ($source =~ m/^\+/) {
4dfe04e6 1367 if ($source =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1368 my $name = $1;
1369 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
708ba714
DM		 1370 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
1371 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb 1372 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
708ba714
DM		 1373 my $ipset_chain = compute_ipset_chain_name(0, $name);
1374 push @cmd, "-m set --match-set ${ipset_chain} src";
e523d2bb
DM		 1375 } else {
1376 die "no such ipset '$name'\n";
1377 }
44be8ceb
DM		 1378 } else {
1379 die "invalid security group name '$source'\n";
1380 }
1381 } elsif ($source =~ m/^${ip_alias_pattern}$/){
81d574a7 1382 my $alias = lc($source);
bfc488f6 1383 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
e523d2bb
DM		 1384 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1385 die "no such alias '$source'\n" if !$e;
81d574a7 1386 push @cmd, "-s $e->{cidr}";
ac8242cc 1387 } elsif ($source =~ m/\-/){
ba791b1f 1388 push @cmd, "-m iprange --src-range $source";
cbb5d6f3 1389 } else {
ba791b1f
AD		 1390 push @cmd, "-s $source";
1391 }
1392 }
1393
cbb5d6f3 1394 if ($dest) {
44be8ceb 1395 if ($dest =~ m/^\+/) {
4dfe04e6 1396 if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
e523d2bb
DM		 1397 my $name = $1;
1398 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
708ba714 1399 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
ac4580a0 1400 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb 1401 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
708ba714
DM		 1402 my $ipset_chain = compute_ipset_chain_name(0, $name);
1403 push @cmd, "-m set --match-set ${ipset_chain} dst";
e523d2bb
DM		 1404 } else {
1405 die "no such ipset '$name'\n";
1406 }
44be8ceb
DM		 1407 } else {
1408 die "invalid security group name '$dest'\n";
1409 }
1410 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
51b40846 1411 my $alias = lc($dest);
bfc488f6 1412 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
e523d2bb
DM		 1413 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1414 die "no such alias '$dest'\n" if !$e;
81d574a7 1415 push @cmd, "-d $e->{cidr}";
cbb5d6f3 1416 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f 1417 push @cmd, "-m iprange --dst-range $dest";
cbb5d6f3 1418 } else {
d6d2a385 1419 push @cmd, "-d $dest";
ba791b1f
AD		 1420 }
1421 }
4b586518 1422
181390b0 1423 if ($rule->{proto}) {
41524a58 1424 push @cmd, "-p $rule->{proto}";
e3a1d391 1425
181390b0 1426 my $multiport = 0;
e5076eee
DM		 1427 $multiport++ if $nbdport > 1;
1428 $multiport++ if $nbsport > 1;
e3a1d391 1429
41524a58 1430 push @cmd, "--match multiport" if $multiport;
4b586518 1431
cbb5d6f3 1432 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1433 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1434
1435 if ($rule->{dport}) {
1436 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1437 # Note: we use dport to store --icmp-type
1438 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1439 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 1440 } else {
e5076eee 1441 if ($nbdport > 1) {
181390b0 1442 if ($multiport == 2) {
41524a58 1443 push @cmd, "--ports $rule->{dport}";
181390b0 1444 } else {
41524a58 1445 push @cmd, "--dports $rule->{dport}";
181390b0 1446 }
e3a1d391 1447 } else {
41524a58 1448 push @cmd, "--dport $rule->{dport}";
e3a1d391 1449 }
4b586518
DM		 1450 }
1451 }
4b586518 1452
181390b0 1453 if ($rule->{sport}) {
e5076eee 1454 if ($nbsport > 1) {
41524a58 1455 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1456 } else {
41524a58 1457 push @cmd, "--sport $rule->{sport}";
181390b0 1458 }
4b586518 1459 }
181390b0 1460 } elsif ($rule->{dport} || $rule->{sport}) {
93d96f83
DM		 1461 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
1462 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
4b586518
DM		 1463 }
1464
41524a58 1465 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1466
1467 if (my $action = $rule->{action}) {
cbb5d6f3 1468 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1469 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1470 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1471 }
3a616aa0 1472
eba0fb64
DM		 1473 return scalar(@cmd) ? join(' ', @cmd) : undef;
1474}
1475
1476sub ruleset_generate_rule {
e523d2bb 1477 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
eba0fb64 1478
e5076eee
DM		 1479 my $rules;
1480
1481 if ($rule->{macro}) {
1482 $rules = &$apply_macro($rule->{macro}, $rule);
1483 } else {
1484 $rules = [ $rule ];
1485 }
1486
d4091b82
DM		 1487 # update all or nothing
1488
1489 my @cmds = ();
cbb5d6f3 1490 foreach my $tmp (@$rules) {
e523d2bb 1491 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
d4091b82 1492 push @cmds, $cmdstr;
e5076eee 1493 }
41524a58 1494 }
d4091b82
DM		 1495
1496 foreach my $cmdstr (@cmds) {
1497 ruleset_addrule($ruleset, $chain, $cmdstr);
1498 }
3fa83edf 1499}
0f168d7b 1500
eba0fb64
DM		 1501sub ruleset_generate_rule_insert {
1502 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1503
e5076eee
DM		 1504 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1505
eba0fb64
DM		 1506 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1507 ruleset_insertrule($ruleset, $chain, $cmdstr);
1508 }
1509}
3fa83edf
DM		 1510
1511sub ruleset_create_chain {
1512 my ($ruleset, $chain) = @_;
3a616aa0 1513
d050c724 1514 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1515 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1516
3fa83edf
DM		 1517 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1518
1519 $ruleset->{$chain} = [];
3a616aa0
AD		 1520}
1521
3fa83edf
DM		 1522sub ruleset_chain_exist {
1523 my ($ruleset, $chain) = @_;
3a616aa0 1524
3fa83edf
DM		 1525 return $ruleset->{$chain} ? 1 : undef;
1526}
3a616aa0 1527
3fa83edf
DM		 1528sub ruleset_addrule {
1529 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1530
3fa83edf 1531 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1532
3fa83edf
DM		 1533 push @{$ruleset->{$chain}}, "-A $chain $rule";
1534}
3a616aa0 1535
3fa83edf
DM		 1536sub ruleset_insertrule {
1537 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1538
3fa83edf 1539 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1540
3fa83edf
DM		 1541 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1542}
3a616aa0 1543
782c4cde
DM		 1544sub get_log_rule_base {
1545 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1546
782c4cde
DM		 1547 die "internal error - no log level" if !defined($loglevel);
1548
1549 $vmid = 0 if !defined($vmid);
1550
cbb5d6f3 1551 # Note: we use special format for prefix to pass further
782c4cde
DM		 1552 # info to log daemon (VMID, LOGVELEL and CHAIN)
1553
1554 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1555}
1556
1557sub ruleset_addlog {
1558 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1559
1560 return if !defined($loglevel);
1561
1562 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1563
1564 $logrule = "$rule $logrule" if defined($rule);
1565
88733a74 1566 ruleset_addrule($ruleset, $chain, $logrule);
782c4cde
DM		 1567}
1568
ead850e8 1569sub ruleset_add_chain_policy {
782c4cde 1570 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1571
1572 if ($policy eq 'ACCEPT') {
1573
1574 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1575 { ACCEPT => $accept_action});
1576
1577 } elsif ($policy eq 'DROP') {
1578
1579 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1580
782c4cde 1581 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1582
1583 ruleset_addrule($ruleset, $chain, "-j DROP");
1584 } elsif ($policy eq 'REJECT') {
1585 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1586
782c4cde 1587 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1588
1589 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1590 } else {
1591 # should not happen
1592 die "internal error: unknown policy '$policy'";
1593 }
1594}
1595
e2943485
DM		 1596sub ruleset_chain_add_conn_filters {
1597 my ($ruleset, $chain, $accept) = @_;
1598
1599 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1600 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1601}
1602
1603sub ruleset_chain_add_input_filters {
2428e394
AD		 1604 my ($ruleset, $chain, $options, $cluster_conf, $loglevel) = @_;
1605
1606 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 1607 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
1608 ruleset_create_chain($ruleset, "PVEFW-blacklist");
1609 ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel;
1610 ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP");
1611 }
708ba714
DM		 1612 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist');
1613 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist");
2428e394 1614 }
e2943485
DM		 1615
1616 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1617 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1618 }
1619
1620 if ($options->{tcpflags}) {
1621 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1622 }
1623}
1624
9e15114a 1625sub ruleset_create_vm_chain {
58638f2c 1626 my ($ruleset, $chain, $options, $macaddr, $direction) = @_;
3a616aa0 1627
9e15114a 1628 ruleset_create_chain($ruleset, $chain);
b47ecc88 1629 my $accept = generate_nfqueue($options);
3a616aa0 1630
ce15d90b 1631 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1632 if ($direction eq 'OUT') {
cbb5d6f3 1633 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1634 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1635 } else {
cbb5d6f3 1636 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1637 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1638 }
ce15d90b
DM		 1639 }
1640
b21aca2c
DM		 1641 if ($direction eq 'OUT') {
1642 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1643 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1644 }
9e15114a 1645 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1646 }
9e15114a
DM		 1647}
1648
4bc6b5ac
DM		 1649sub ruleset_add_group_rule {
1650 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action) = @_;
1651
1652 my $group = $rule->{action};
1653 my $group_chain = "GROUP-$group-$direction";
1654 if(!ruleset_chain_exist($ruleset, $group_chain)){
1655 generate_group_rules($ruleset, $cluster_conf, $group);
1656 }
bfc488f6 1657
f8b12fff
DM		 1658 if ($direction eq 'OUT' && $rule->{iface_out}) {
1659 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain");
1660 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1661 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain");
4bc6b5ac
DM		 1662 } else {
1663 ruleset_addrule($ruleset, $chain, "-j $group_chain");
1664 }
1665
1666 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action");
1667}
1668
9e15114a 1669sub ruleset_generate_vm_rules {
e523d2bb 1670 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1671
1672 my $lc_direction = lc($direction);
c29f55c9 1673
6b8ca015
DM		 1674 my $in_accept = generate_nfqueue($options);
1675
92e976b3
DM		 1676 foreach my $rule (@$rules) {
1677 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 1678 next if !$rule->{enable} || $rule->{errors};
92e976b3 1679 if ($rule->{type} eq 'group') {
4bc6b5ac
DM		 1680 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
1681 $direction eq 'OUT' ? 'RETURN' : $in_accept);
92e976b3
DM		 1682 } else {
1683 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1684 eval {
1685 if ($direction eq 'OUT') {
1686 ruleset_generate_rule($ruleset, $chain, $rule,
e34d0e58 1687 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
e523d2bb 1688 undef, $cluster_conf, $vmfw_conf);
921dfb33 1689 } else {
e34d0e58
DM		 1690 ruleset_generate_rule($ruleset, $chain, $rule,
1691 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
e523d2bb 1692 undef, $cluster_conf, $vmfw_conf);
921dfb33
DM		 1693 }
1694 };
1695 warn $@ if $@;
4e6112f9 1696 }
3a616aa0 1697 }
9e15114a
DM		 1698}
1699
b47ecc88
AD		 1700sub generate_nfqueue {
1701 my ($options) = @_;
1702
73089769
DM		 1703 if ($options->{ips}) {
1704 my $action = "NFQUEUE";
1705 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1706 if (defined($3) && defined($1)) {
b47ecc88 1707 $action .= " --queue-balance $1:$3";
73089769 1708 } elsif (defined($1)) {
b47ecc88
AD		 1709 $action .= " --queue-num $1";
1710 }
1711 }
8dc92812 1712 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1713 return $action;
1714 } else {
1715 return "ACCEPT";
b47ecc88 1716 }
b47ecc88
AD		 1717}
1718
da6fc60b 1719sub ruleset_generate_vm_ipsrules {
a01c32c7 1720 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 1721
1722 if ($options->{ips} && $direction eq 'IN') {
1723 my $nfqueue = generate_nfqueue($options);
1724
a01c32c7 1725 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 1726 ruleset_create_chain($ruleset, "PVEFW-IPS");
1727 }
1728
a01c32c7 1729 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
da6fc60b
AD		 1730 }
1731}
1732
9e15114a 1733sub generate_venet_rules_direction {
58638f2c 1734 my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
9e15114a 1735
9e15114a
DM		 1736 my $lc_direction = lc($direction);
1737
1738 my $rules = $vmfw_conf->{rules};
1739
1740 my $options = $vmfw_conf->{options};
1741 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1742
1743 my $chain = "venet0-$vmid-$direction";
1744
58638f2c 1745 ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction);
9e15114a 1746
e523d2bb 1747 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction);
9e15114a
DM		 1748
1749 # implement policy
1750 my $policy;
1751
1752 if ($direction eq 'OUT') {
1753 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1754 } else {
1755 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1756 }
1757
b47ecc88
AD		 1758 my $accept = generate_nfqueue($options);
1759 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1760 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1761
eba0fb64 1762 if ($direction eq 'OUT') {
41389aed 1763 ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", {
eba0fb64
DM		 1764 action => $chain,
1765 source => $ip,
1766 iface_in => 'venet0'});
1767 } else {
41389aed 1768 ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", {
eba0fb64
DM		 1769 action => $chain,
1770 dest => $ip,
1771 iface_out => 'venet0'});
1772 }
9e15114a
DM		 1773}
1774
1775sub generate_tap_rules_direction {
58638f2c 1776 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction) = @_;
9e15114a
DM		 1777
1778 my $lc_direction = lc($direction);
1779
1780 my $rules = $vmfw_conf->{rules};
1781
1782 my $options = $vmfw_conf->{options};
1783 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1784
1785 my $tapchain = "$iface-$direction";
1786
58638f2c 1787 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction);
9e15114a 1788
e523d2bb 1789 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1790
a01c32c7 1791 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 1792
ccae0b50
DM		 1793 # implement policy
1794 my $policy;
1795
1796 if ($direction eq 'OUT') {
72f63fde 1797 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1798 } else {
72f63fde 1799 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1800 }
1801
b47ecc88
AD		 1802 my $accept = generate_nfqueue($options);
1803 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1804 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1805
3fa83edf 1806 # plug the tap chain to bridge chain
3cc81077 1807 if ($direction eq 'IN') {
a01c32c7
DM		 1808 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
1809 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
3cc81077 1810 } else {
a01c32c7
DM		 1811 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
1812 "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain");
3cc81077 1813 }
3a616aa0
AD		 1814}
1815
d18c1e2b 1816sub enable_host_firewall {
fca39c2c 1817 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
0bd5f137 1818
92e976b3 1819 my $options = $hostfw_conf->{options};
63324b09 1820 my $cluster_options = $cluster_conf->{options};
92e976b3 1821 my $rules = $hostfw_conf->{rules};
35f0c37e 1822 my $cluster_rules = $cluster_conf->{rules};
178a63be 1823
3fa83edf 1824 # host inbound firewall
dec84fcd
DM		 1825 my $chain = "PVEFW-HOST-IN";
1826 ruleset_create_chain($ruleset, $chain);
0bd5f137 1827
178a63be
DM		 1828 my $loglevel = get_option_log_level($options, "log_level_in");
1829
e2943485 1830 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
4ac863a6 1831
e2943485 1832 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2428e394 1833 ruleset_chain_add_input_filters($ruleset, $chain, $options, $cluster_conf, $loglevel);
fb424a00 1834
23e888f8
DM		 1835 # we use RETURN because we need to check also tap rules
1836 my $accept_action = 'RETURN';
1837
cc8dc02f
DM		 1838 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1839
35f0c37e
DM		 1840 # add host rules first, so that cluster wide rules can be overwritten
1841 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 1842 next if !$rule->{enable} || $rule->{errors};
bfc488f6 1843
f8b12fff 1844 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 1845
1a9978ed
DM		 1846 eval {
1847 if ($rule->{type} eq 'group') {
1848 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action);
1849 } elsif ($rule->{type} eq 'in') {
bfc488f6 1850 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 1851 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 1852 }
1853 };
1854 warn $@ if $@;
f8b12fff 1855 delete $rule->{iface_in};
0bd5f137 1856 }
eb399cef
DM		 1857
1858 # allow standard traffic for management ipset (includes cluster network)
708ba714
DM		 1859 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management");
1860 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
eb399cef 1861 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API
bfc488f6 1862 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
eb399cef
DM		 1863 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
1864 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 1865
525778d7 1866 my $localnet = local_network();
3bc79f87 1867
eb399cef 1868 # corosync
525778d7 1869 if ($localnet) {
c5191f57 1870 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7
DM		 1871 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule");
1872 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87 1873 }
0bd5f137 1874
23e888f8 1875 # implement input policy
63324b09 1876 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1877 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1878
3fa83edf 1879 # host outbound firewall
aadd745e 1880 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1881 ruleset_create_chain($ruleset, $chain);
1882
178a63be
DM		 1883 $loglevel = get_option_log_level($options, "log_level_out");
1884
dec84fcd 1885 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
e2943485
DM		 1886
1887 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
1888
23e888f8
DM		 1889 # we use RETURN because we may want to check other thigs later
1890 $accept_action = 'RETURN';
1891
cc8dc02f
DM		 1892 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1893
35f0c37e
DM		 1894 # add host rules first, so that cluster wide rules can be overwritten
1895 foreach my $rule (@$rules, @$cluster_rules) {
5383df39
DM		 1896 next if !$rule->{enable} || $rule->{errors};
1897
f8b12fff 1898 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed
DM		 1899 eval {
1900 if ($rule->{type} eq 'group') {
1901 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action);
1902 } elsif ($rule->{type} eq 'out') {
bfc488f6 1903 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 1904 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 1905 }
1906 };
1907 warn $@ if $@;
f8b12fff 1908 delete $rule->{iface_out};
0bd5f137
AD		 1909 }
1910
3bc79f87 1911 # allow standard traffic on cluster network
525778d7
DM		 1912 if ($localnet) {
1913 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API
1914 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH
bfc488f6 1915 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
525778d7 1916 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
bfc488f6 1917
c5191f57 1918 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7 1919 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule");
f573ae2c 1920 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87
DM		 1921 }
1922
23e888f8 1923 # implement output policy
63324b09 1924 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1925 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1926
dec84fcd
DM		 1927 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1928 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1929}
1930
1931sub generate_group_rules {
fca39c2c 1932 my ($ruleset, $cluster_conf, $group) = @_;
9d31b418 1933
c6f5cc88 1934 my $rules = $cluster_conf->{groups}->{$group};
6158271d 1935
b4deedab
DM		 1936 if (!$rules) {
1937 warn "no such security group '$group'\n";
1938 $rules = []; # create empty chain
1939 }
1940
3fa83edf 1941 my $chain = "GROUP-${group}-IN";
9d31b418 1942
3fa83edf 1943 ruleset_create_chain($ruleset, $chain);
b47ecc88 1944 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1945
92e976b3
DM		 1946 foreach my $rule (@$rules) {
1947 next if $rule->{type} ne 'in';
ba791b1f 1948 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 1949 }
1950
3fa83edf 1951 $chain = "GROUP-${group}-OUT";
9d31b418 1952
3fa83edf 1953 ruleset_create_chain($ruleset, $chain);
4e6112f9 1954 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1955
92e976b3
DM		 1956 foreach my $rule (@$rules) {
1957 next if $rule->{type} ne 'out';
1958 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1959 # check also other tap rules later
cbb5d6f3 1960 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1961 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 1962 }
9d31b418
AD		 1963}
1964
51bae274
DM		 1965my $MAX_NETS = 32;
1966my $valid_netdev_names = {};
1967for (my $i = 0; $i < $MAX_NETS; $i++) {
1968 $valid_netdev_names->{"net$i"} = 1;
1969}
5e1267a5 1970
51bae274 1971sub parse_fw_rule {
a523e057 1972 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
5e1267a5 1973
dba740a9 1974 chomp $line;
51bae274 1975
d4cda423
DM		 1976 my $orig_line = $line;
1977
6d9246e7
DM		 1978 my $rule = {};
1979
11bac5c2 1980 # we can add single line comments to the end of the rule
6d9246e7
DM		 1981 if ($line =~ s/#\s*(.*?)\s*$//) {
1982 $rule->{comment} = decode('utf8', $1);
1983 }
11bac5c2
DM		 1984
1985 # we can disable a rule when prefixed with '|'
ea9e5116 1986
6d9246e7 1987 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 1988
dba740a9
DM		 1989 $line =~ s/^(\S+)\s+(\S+)\s*// ||
1990 die "unable to parse rule: $line\n";
6d9246e7
DM		 1991
1992 $rule->{type} = lc($1);
1993 $rule->{action} = $2;
1994
1995 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
1996 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
1997 $rule->{macro} = $1;
1998 $rule->{action} = $2;
92e976b3 1999 }
51bae274
DM		 2000 }
2001
dba740a9
DM		 2002 while (length($line)) {
2003 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2004 $rule->{iface} = $1;
dba740a9
DM		 2005 next;
2006 }
51bae274 2007
6d9246e7 2008 last if $rule->{type} eq 'group';
51bae274 2009
dba740a9 2010 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2011 $rule->{proto} = $1;
dba740a9
DM		 2012 next;
2013 }
6d9246e7 2014
dba740a9 2015 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2016 $rule->{dport} = $1;
dba740a9
DM		 2017 next;
2018 }
6d9246e7 2019
dba740a9 2020 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2021 $rule->{sport} = $1;
dba740a9
DM		 2022 next;
2023 }
2024 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2025 $rule->{source} = $1;
dba740a9
DM		 2026 next;
2027 }
2028 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2029 $rule->{dest} = $1;
dba740a9
DM		 2030 next;
2031 }
51bae274 2032
dba740a9
DM		 2033 last;
2034 }
ba791b1f 2035
dba740a9 2036 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2037
a523e057 2038 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
d4cda423
DM		 2039 if ($verbose && $rule->{errors}) {
2040 warn "$prefix - errors in rule parameters: $orig_line\n";
2041 foreach my $p (keys %{$rule->{errors}}) {
2042 warn " $p: $rule->{errors}->{$p}\n";
2043 }
2044 }
6d9246e7
DM		 2045
2046 return $rule;
51bae274
DM		 2047}
2048
2d404ffc 2049sub parse_vmfw_option {
85c6eaed
DM		 2050 my ($line) = @_;
2051
2052 my ($opt, $value);
2053
178a63be
DM		 2054 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2055
6bafd113 2056 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2057 $opt = lc($1);
2058 $value = int($2);
178a63be
DM		 2059 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2060 $opt = lc($1);
2061 $value = $2 ? lc($3) : '';
72f63fde 2062 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2063 $opt = lc($1);
2064 $value = uc($3);
b47ecc88
AD		 2065 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2066 $opt = lc($1);
2067 $value = $2;
9c6b6efd 2068 } else {
85c6eaed
DM		 2069 chomp $line;
2070 die "can't parse option '$line'\n"
2071 }
2072
2073 return ($opt, $value);
2074}
2075
2d404ffc
DM		 2076sub parse_hostfw_option {
2077 my ($line) = @_;
2078
2079 my ($opt, $value);
2080
2081 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2082
c50a5a68 2083 if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2084 $opt = lc($1);
2085 $value = int($2);
178a63be 2086 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2087 $opt = lc($1);
2088 $value = $2 ? lc($3) : '';
28c082a1 2089 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 2090 $opt = lc($1);
2091 $value = int($2);
2d404ffc
DM		 2092 } else {
2093 chomp $line;
2094 die "can't parse option '$line'\n"
2095 }
2096
2097 return ($opt, $value);
2098}
2099
c6f5cc88
DM		 2100sub parse_clusterfw_option {
2101 my ($line) = @_;
2102
2103 my ($opt, $value);
2104
2105 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
2106 $opt = lc($1);
2107 $value = int($2);
63324b09
DM		 2108 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2109 $opt = lc($1);
2110 $value = uc($3);
c6f5cc88
DM		 2111 } else {
2112 chomp $line;
2113 die "can't parse option '$line'\n"
2114 }
2115
2116 return ($opt, $value);
2117}
2118
e76a9f53 2119sub parse_alias {
92e1209b
AD		 2120 my ($line) = @_;
2121
81d574a7
DM		 2122 # we can add single line comments to the end of the line
2123 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2124
92e1209b 2125 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7
DM		 2126 my ($name, $cidr) = ($1, $2);
2127 $cidr =~ s|/32$||;
2128 pve_verify_ipv4_or_cidr($cidr);
2129 my $data = {
2130 name => $name,
2131 cidr => $cidr,
2132 };
2133 $data->{comment} = $comment if $comment;
2134 return $data;
92e1209b
AD		 2135 }
2136
81d574a7 2137 return undef;
92e1209b
AD		 2138}
2139
1210ae94
DM		 2140sub generic_fw_rules_parser {
2141 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
5e1267a5 2142
51bae274
DM		 2143 my $section;
2144 my $group;
2145
1210ae94 2146 my $res = $empty_conf;
6158271d 2147
351052d1
DM		 2148 my $ipset_option = get_standard_option('ipset-name');
2149
51bae274
DM		 2150 while (defined(my $line = <$fh>)) {
2151 next if $line =~ m/^#/;
2152 next if $line =~ m/^\s*$/;
2153
961b4928
DM		 2154 my $linenr = $fh->input_line_number();
2155 my $prefix = "$filename (line $linenr)";
2156
1210ae94 2157 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2158 $section = 'options';
2159 next;
2160 }
2161
1210ae94 2162 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2163 $section = 'aliases';
2164 next;
2165 }
2166
1210ae94 2167 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2168 $section = 'groups';
92e976b3 2169 $group = lc($1);
0d22acb3 2170 my $comment = $2;
351052d1
DM		 2171 eval {
2172 die "security group name too long\n" if length($group) > $max_group_name_length;
2173 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2174 };
2175 if (my $err = $@) {
2176 ($section, $group, $comment) = undef;
2177 warn "$prefix: $err";
2178 next;
2179 }
2180
c85c87f9 2181 $res->{$section}->{$group} = [];
649e4d57
DM		 2182 $res->{group_comments}->{$group} = decode('utf8', $comment)
2183 if $comment;
51bae274
DM		 2184 next;
2185 }
34cdedfa 2186
1210ae94 2187 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2188 $section = 'rules';
2189 next;
2190 }
cbb5d6f3 2191
1210ae94 2192 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2193 $section = 'ipset';
2194 $group = lc($1);
d72c631c 2195 my $comment = $2;
351052d1
DM		 2196 eval {
2197 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2198 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2199 };
2200 if (my $err = $@) {
2201 ($section, $group, $comment) = undef;
2202 warn "$prefix: $err";
2203 next;
2204 }
2205
c85c87f9 2206 $res->{$section}->{$group} = [];
e34d0e58 2207 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2208 if $comment;
34cdedfa
AD		 2209 next;
2210 }
2211
c6f5cc88 2212 if (!$section) {
cbb5d6f3 2213 warn "$prefix: skip line - no section\n";
51bae274
DM		 2214 next;
2215 }
2216
c6f5cc88
DM		 2217 if ($section eq 'options') {
2218 eval {
1210ae94
DM		 2219 my ($opt, $value);
2220 if ($rule_env eq 'cluster') {
2221 ($opt, $value) = parse_clusterfw_option($line);
2222 } elsif ($rule_env eq 'host') {
2223 ($opt, $value) = parse_hostfw_option($line);
2224 } else {
2225 ($opt, $value) = parse_vmfw_option($line);
2226 }
c6f5cc88
DM		 2227 $res->{options}->{$opt} = $value;
2228 };
2229 warn "$prefix: $@" if $@;
92e1209b
AD		 2230 } elsif ($section eq 'aliases') {
2231 eval {
e76a9f53 2232 my $data = parse_alias($line);
81d574a7 2233 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2234 };
2235 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2236 } elsif ($section eq 'rules') {
2237 my $rule;
1210ae94 2238 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
c6f5cc88
DM		 2239 if (my $err = $@) {
2240 warn "$prefix: $err";
2241 next;
2242 }
2243 push @{$res->{$section}}, $rule;
2244 } elsif ($section eq 'groups') {
34cdedfa 2245 my $rule;
1210ae94 2246 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
34cdedfa
AD		 2247 if (my $err = $@) {
2248 warn "$prefix: $err";
2249 next;
2250 }
3f95d14a 2251 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2252 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2253 # we can add single line comments to the end of the rule
2254 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2255
30f1b100 2256 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2257 my $nomatch = $1;
9d6f90e6 2258 my $cidr = $2;
2a052ee3 2259
44be8ceb 2260 if($cidr !~ m/^${ip_alias_pattern}$/) {
92e1209b 2261 $cidr =~ s|/32$||;
e34d0e58 2262
92e1209b
AD		 2263 eval { pve_verify_ipv4_or_cidr($cidr); };
2264 if (my $err = $@) {
2265 warn "$prefix: $cidr - $err";
2266 next;
2267 }
2a052ee3 2268 }
2a052ee3 2269
e34d0e58 2270 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2271 $entry->{nomatch} = 1 if $nomatch;
2272 $entry->{comment} = $comment if $comment;
e34d0e58 2273
9d6f90e6 2274 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 2275 } else {
2276 warn "$prefix: skip line - unknown section\n";
2277 next;
51bae274 2278 }
5e1267a5
DM		 2279 }
2280
2281 return $res;
2282}
2283
1210ae94
DM		 2284sub parse_host_fw_rules {
2285 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2286
2287 my $empty_conf = { rules => [], options => {}};
2288
2289 return generic_fw_rules_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
2290}
2291
2292sub parse_vm_fw_rules {
2293 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2294
2295 my $empty_conf = {
2296 rules => [],
2297 options => {},
2298 aliases => {},
2299 ipset => {} ,
2300 ipset_comments => {},
2301 };
2302
2303 return generic_fw_rules_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
2304}
2305
2306sub parse_cluster_fw_rules {
2307 my ($filename, $fh, $verbose) = @_;
2308
2309 my $section;
2310 my $group;
2311
2312 my $empty_conf = {
2313 rules => [],
2314 options => {},
2315 aliases => {},
2316 groups => {},
2317 group_comments => {},
2318 ipset => {} ,
2319 ipset_comments => {},
2320 };
2321
2322 return generic_fw_rules_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
2323}
2324
06320eb0
DM		 2325sub run_locked {
2326 my ($code, @param) = @_;
2327
2328 my $timeout = 10;
2329
2330 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2331
2332 die $@ if $@;
2333
2334 return $res;
2335}
2336
5e1267a5
DM		 2337sub read_local_vm_config {
2338
2339 my $openvz = {};
5e1267a5
DM		 2340 my $qemu = {};
2341
c8301d63 2342 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2343
c8301d63
DM		 2344 my $vmlist = PVE::Cluster::get_vmlist();
2345 return $vmdata if !$vmlist || !$vmlist->{ids};
2346 my $ids = $vmlist->{ids};
2347
2348 foreach my $vmid (keys %$ids) {
2349 next if !$vmid; # skip VE0
2350 my $d = $ids->{$vmid};
2351 next if !$d->{node} || $d->{node} ne $nodename;
2352 next if !$d->{type};
2353 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2354 if ($have_pve_manager) {
2355 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2356 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2357 $openvz->{$vmid} = $conf;
2358 }
c8301d63
DM		 2359 }
2360 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2361 if ($have_qemu_server) {
2362 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2363 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2364 $qemu->{$vmid} = $conf;
2365 }
c8301d63 2366 }
5e1267a5
DM		 2367 }
2368 }
d9fee004 2369
5e1267a5
DM		 2370 return $vmdata;
2371};
2372
e7b35711 2373sub load_vmfw_conf {
a523e057 2374 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
e7b35711
DM		 2375
2376 my $vmfw_conf = {};
2377
8aef5177
DM		 2378 $dir = "/etc/pve/firewall" if !defined($dir);
2379
2380 my $filename = "$dir/$vmid.fw";
e7b35711 2381 if (my $fh = IO::File->new($filename, O_RDONLY)) {
a523e057 2382 $vmfw_conf = parse_vm_fw_rules($filename, $fh, $cluster_conf, $rule_env, $verbose);
708ba714 2383 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 2384 }
2385
2386 return $vmfw_conf;
2387}
2388
464f933e 2389my $format_rules = sub {
dba740a9 2390 my ($rules, $allow_iface) = @_;
464f933e
DM		 2391
2392 my $raw = '';
2393
2394 foreach my $rule (@$rules) {
c14dacdf 2395 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2396 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2397 $raw .= uc($rule->{type});
7ca36671
DM		 2398 if ($rule->{macro}) {
2399 $raw .= " $rule->{macro}($rule->{action})";
2400 } else {
2401 $raw .= " " . $rule->{action};
2402 }
dba740a9
DM		 2403 if ($allow_iface && $rule->{iface}) {
2404 $raw .= " -i $rule->{iface}";
2405 }
c14dacdf
DM		 2406
2407 if ($rule->{type} ne 'group') {
dba740a9
DM		 2408 $raw .= " -source $rule->{source}" if $rule->{source};
2409 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2410 $raw .= " -p $rule->{proto}" if $rule->{proto};
2411 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2412 $raw .= " -sport $rule->{sport}" if $rule->{sport};
c14dacdf
DM		 2413 }
2414
cbb5d6f3 2415 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2416 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2417 $raw .= "\n";
2418 } else {
c14dacdf 2419 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2420 }
2421 }
2422
2423 return $raw;
2424};
2425
2426my $format_options = sub {
68c90e21
DM		 2427 my ($options) = @_;
2428
2429 my $raw = '';
464f933e
DM		 2430
2431 $raw .= "[OPTIONS]\n\n";
2432 foreach my $opt (keys %$options) {
2433 $raw .= "$opt: $options->{$opt}\n";
2434 }
2435 $raw .= "\n";
68c90e21
DM		 2436
2437 return $raw;
464f933e
DM		 2438};
2439
0d5f0a0f
DM		 2440my $format_aliases = sub {
2441 my ($aliases) = @_;
2442
2443 my $raw = '';
2444
2445 $raw .= "[ALIASES]\n\n";
2446 foreach my $k (keys %$aliases) {
81d574a7
DM		 2447 my $e = $aliases->{$k};
2448 $raw .= "$e->{name} $e->{cidr}";
2449 $raw .= " # " . encode('utf8', $e->{comment})
2450 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2451 $raw .= "\n";
0d5f0a0f
DM		 2452 }
2453 $raw .= "\n";
2454
2455 return $raw;
2456};
2457
1210ae94
DM		 2458my $format_ipsets = sub {
2459 my ($fw_conf) = @_;
2460
9d6f90e6
DM		 2461 my $raw = '';
2462
1210ae94
DM		 2463 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
2464 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
2465 my $utf8comment = encode('utf8', $comment);
2466 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2467 } else {
2468 $raw .= "[IPSET $ipset]\n\n";
2469 }
2470 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 2471
1210ae94
DM		 2472 my $nethash = {};
2473 foreach my $entry (@$options) {
2474 $nethash->{$entry->{cidr}} = $entry;
2475 }
2476
2477 foreach my $cidr (sort keys %$nethash) {
2478 my $entry = $nethash->{$cidr};
2479 my $line = $entry->{nomatch} ? '!' : '';
2480 $line .= $entry->{cidr};
2481 $line .= " # " . encode('utf8', $entry->{comment})
2482 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2483 $raw .= "$line\n";
2484 }
2485
2486 $raw .= "\n";
9d6f90e6 2487 }
e34d0e58 2488
9d6f90e6
DM		 2489 return $raw;
2490};
2491
464f933e
DM		 2492sub save_vmfw_conf {
2493 my ($vmid, $vmfw_conf) = @_;
2494
2495 my $raw = '';
2496
2497 my $options = $vmfw_conf->{options};
68c90e21 2498 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2499
e76a9f53
DM		 2500 my $aliases = $vmfw_conf->{aliases};
2501 $raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
2502
1210ae94
DM		 2503 $raw .= &$format_ipsets($vmfw_conf);
2504
8824b2f0 2505 my $rules = $vmfw_conf->{rules} || [];
464f933e
DM		 2506 if (scalar(@$rules)) {
2507 $raw .= "[RULES]\n\n";
2508 $raw .= &$format_rules($rules, 1);
2509 $raw .= "\n";
2510 }
2511
2512 my $filename = "/etc/pve/firewall/$vmid.fw";
2513 PVE::Tools::file_set_contents($filename, $raw);
2514}
2515
6fc63ffd 2516sub read_vm_firewall_configs {
a523e057 2517 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
8aef5177 2518
6fc63ffd 2519 my $vmfw_configs = {};
c8301d63 2520
b6b8e6ad 2521 foreach my $vmid (keys %{$vmdata->{qemu}}) {
a523e057 2522 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
b6b8e6ad
DM		 2523 next if !$vmfw_conf->{options}; # skip if file does not exists
2524 $vmfw_configs->{$vmid} = $vmfw_conf;
2525 }
2526 foreach my $vmid (keys %{$vmdata->{openvz}}) {
a523e057 2527 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
e7b35711
DM		 2528 next if !$vmfw_conf->{options}; # skip if file does not exists
2529 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2530 }
2531
6fc63ffd 2532 return $vmfw_configs;
5e1267a5
DM		 2533}
2534
2d404ffc
DM		 2535sub get_option_log_level {
2536 my ($options, $k) = @_;
2537
2538 my $v = $options->{$k};
178a63be 2539 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2540
2541 return undef if $v eq '' || $v eq 'nolog';
2542
2543 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2544
2545 return $v if ($v >= 0) && ($v <= 7);
2546
2547 warn "unknown log level ($k = '$v')\n";
2548
2549 return undef;
2550}
2551
d8f2505e 2552sub generate_std_chains {
2d404ffc 2553 my ($ruleset, $options) = @_;
cbb5d6f3 2554
2d404ffc
DM		 2555 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2556
2557 # same as shorewall smurflog.
782c4cde 2558 my $chain = 'PVEFW-smurflog';
12f3796e 2559 $pve_std_chains->{$chain} = [];
782c4cde
DM		 2560
2561 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2562 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 2563
2564 # same as shorewall logflags action.
2565 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2566 $chain = 'PVEFW-logflags';
12f3796e
DM		 2567 $pve_std_chains->{$chain} = [];
2568
782c4cde
DM		 2569 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2570 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2571 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 2572
2573 foreach my $chain (keys %$pve_std_chains) {
2574 ruleset_create_chain($ruleset, $chain);
2575 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2576 if (ref($rule)) {
2577 ruleset_generate_rule($ruleset, $chain, $rule);
2578 } else {
2579 ruleset_addrule($ruleset, $chain, $rule);
2580 }
2581 }
2582 }
2583}
2584
34cdedfa 2585sub generate_ipset_chains {
708ba714 2586 my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_;
34cdedfa 2587
dd7a13fd 2588 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
708ba714
DM		 2589 my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $ipset);
2590 generate_ipset($ipset_ruleset, $ipset_chain, $fw_conf->{ipset}->{$ipset}, $clusterfw_conf, $fw_conf);
34cdedfa
AD		 2591 }
2592}
2593
2594sub generate_ipset {
708ba714
DM		 2595 my ($ipset_ruleset, $name, $options, $clusterfw_conf, $fw_conf) = @_;
2596
2597 die "duplicate ipset chain '$name'\n" if defined($ipset_ruleset->{$name});
34cdedfa 2598
dd7a13fd
DM		 2599 my $hashsize = scalar(@$options);
2600 if ($hashsize <= 64) {
2a052ee3 2601 $hashsize = 64;
dd7a13fd 2602 } else {
2a052ee3
AD		 2603 $hashsize = round_powerof2($hashsize);
2604 }
2605
708ba714 2606 $ipset_ruleset->{$name} = ["create $name hash:net family inet hashsize $hashsize maxelem $hashsize"];
34cdedfa 2607
30f1b100
DM		 2608 # remove duplicates
2609 my $nethash = {};
9d6f90e6 2610 foreach my $entry (@$options) {
92e1209b 2611 my $cidr = $entry->{cidr};
d4091b82 2612 if ($cidr =~ m/^${ip_alias_pattern}$/) {
81d574a7 2613 my $alias = lc($cidr);
708ba714
DM		 2614 my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
2615 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
2616 if ($e) {
2617 $entry->{cidr} = $e->{cidr};
7dd13259 2618 $nethash->{$entry->{cidr}} = $entry;
d4091b82 2619 } else {
708ba714 2620 warn "no such alias '$cidr'\n";
d4091b82 2621 }
7dd13259
DM		 2622 } else {
2623 $nethash->{$entry->{cidr}} = $entry;
92e1209b 2624 }
30f1b100
DM		 2625 }
2626
2627 foreach my $cidr (sort keys %$nethash) {
2628 my $entry = $nethash->{$cidr};
2629
9d6f90e6
DM		 2630 my $cmd = "add $name $cidr";
2631 if ($entry->{nomatch}) {
2632 if ($feature_ipset_nomatch) {
2633 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2634 } else {
2635 warn "ignore !$cidr - nomatch not supported by kernel\n";
2636 }
2637 } else {
2638 push @{$ipset_ruleset->{$name}}, $cmd;
2639 }
34cdedfa 2640 }
2a052ee3
AD		 2641}
2642
2643sub round_powerof2 {
dd7a13fd 2644 my ($int) = @_;
2a052ee3 2645
dd7a13fd
DM		 2646 $int--;
2647 $int |= $int >> $_ foreach (1,2,4,8,16);
2648 return ++$int;
34cdedfa
AD		 2649}
2650
fca39c2c 2651sub load_clusterfw_conf {
d4cda423 2652 my ($filename, $verbose) = @_;
8aef5177
DM		 2653
2654 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 2655
fca39c2c 2656 my $cluster_conf = {};
8aef5177 2657 if (my $fh = IO::File->new($filename, O_RDONLY)) {
d4cda423 2658 $cluster_conf = parse_cluster_fw_rules($filename, $fh, $verbose);
51bae274 2659 }
5e1267a5 2660
fca39c2c 2661 return $cluster_conf;
e5d76bde
DM		 2662}
2663
fca39c2c
DM		 2664sub save_clusterfw_conf {
2665 my ($cluster_conf) = @_;
9c7e0858
DM		 2666
2667 my $raw = '';
9c7e0858 2668
c6f5cc88 2669 my $options = $cluster_conf->{options};
68c90e21 2670 $raw .= &$format_options($options) if scalar(keys %$options);
9c7e0858 2671
0d5f0a0f
DM		 2672 my $aliases = $cluster_conf->{aliases};
2673 $raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
e34d0e58 2674
1210ae94
DM		 2675 $raw .= &$format_ipsets($cluster_conf);
2676
c6f5cc88
DM		 2677 my $rules = $cluster_conf->{rules};
2678 if (scalar(@$rules)) {
2679 $raw .= "[RULES]\n\n";
63c91681 2680 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2681 $raw .= "\n";
2682 }
2683
2684 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2685 my $rules = $cluster_conf->{groups}->{$group};
0d22acb3 2686 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
649e4d57
DM		 2687 my $utf8comment = encode('utf8', $comment);
2688 $raw .= "[group $group] # $utf8comment\n\n";
0d22acb3
DM		 2689 } else {
2690 $raw .= "[group $group]\n\n";
2691 }
2692
63c91681 2693 $raw .= &$format_rules($rules, 0);
9c7e0858
DM		 2694 $raw .= "\n";
2695 }
2696
fca39c2c 2697 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2698}
2699
8b27beb9 2700sub load_hostfw_conf {
a523e057 2701 my ($cluster_conf, $filename, $verbose) = @_;
8aef5177
DM		 2702
2703 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 2704
2705 my $hostfw_conf = {};
8aef5177 2706 if (my $fh = IO::File->new($filename, O_RDONLY)) {
a523e057 2707 $hostfw_conf = parse_host_fw_rules($filename, $fh, $cluster_conf, $verbose);
8b27beb9
DM		 2708 }
2709 return $hostfw_conf;
2710}
2711
63c91681
DM		 2712sub save_hostfw_conf {
2713 my ($hostfw_conf) = @_;
2714
2715 my $raw = '';
2716
2717 my $options = $hostfw_conf->{options};
68c90e21 2718 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2719
63c91681
DM		 2720 my $rules = $hostfw_conf->{rules};
2721 if (scalar(@$rules)) {
2722 $raw .= "[RULES]\n\n";
2723 $raw .= &$format_rules($rules, 1);
2724 $raw .= "\n";
2725 }
2726
2727 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2728}
2729
e5d76bde 2730sub compile {
d4cda423 2731 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3dfa8a7f 2732
8aef5177
DM		 2733 my $vmfw_configs;
2734
2735 if ($vmdata) { # test mode
2736 my $testdir = $vmdata->{testdir} || die "no test directory specified";
2737 my $filename = "$testdir/cluster.fw";
d4cda423 2738 $cluster_conf = load_clusterfw_conf($filename, $verbose);
8aef5177
DM		 2739
2740 $filename = "$testdir/host.fw";
a523e057 2741 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
8aef5177 2742
a523e057 2743 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
8aef5177 2744 } else { # normal operation
d4cda423 2745 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
8aef5177 2746
a523e057 2747 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
8aef5177
DM		 2748
2749 $vmdata = read_local_vm_config();
a523e057 2750 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
8aef5177 2751 }
3dfa8a7f 2752
27083984 2753 $cluster_conf->{ipset}->{venet0} = [];
708ba714 2754 my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0');
bfc488f6 2755
525778d7
DM		 2756 my $localnet;
2757 if ($cluster_conf->{aliases}->{local_network}) {
2758 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2759 } else {
2760 $localnet = local_network() || '127.0.0.0/8';
2761 $cluster_conf->{aliases}->{local_network} = { cidr => $localnet };
2762 }
2763
2764 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 2765
3fa83edf
DM		 2766 my $ruleset = {};
2767
dec84fcd
DM		 2768 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2769 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2770
fadb13dd 2771 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 2772
8b27beb9 2773 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2774
88733a74
AD		 2775 # fixme: what log level should we use here?
2776 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2777
097820b0 2778 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 2779
708ba714 2780
e2943485 2781 ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
708ba714
DM		 2782 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
2783 ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
e2943485
DM		 2784
2785 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
2428e394 2786 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2787
d1b41c08 2788 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
e2943485
DM		 2789
2790 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
d1b41c08 2791 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
e2943485
DM		 2792
2793 ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
2428e394 2794 ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2795
708ba714 2796 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
e2943485 2797
92e976b3 2798 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 2799
6d2ab017 2800 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2801
708ba714
DM		 2802 my $ipset_ruleset = {};
2803
1a9978ed
DM		 2804 if ($hostfw_enable) {
2805 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf); };
2806 warn $@ if $@; # just to be sure - should not happen
2807 }
3fa83edf 2808
708ba714 2809 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
62689a1e 2810
6158271d 2811 # generate firewall rules for QEMU VMs
3fa83edf 2812 foreach my $vmid (keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 2813 eval {
2814 my $conf = $vmdata->{qemu}->{$vmid};
2815 my $vmfw_conf = $vmfw_configs->{$vmid};
2816 return if !$vmfw_conf;
2817 return if !$vmfw_conf->{options}->{enable};
2818
708ba714
DM		 2819 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
2820
1a9978ed
DM		 2821 foreach my $netid (keys %$conf) {
2822 next if $netid !~ m/^net(\d+)$/;
2823 my $net = PVE::QemuServer::parse_net($conf->{$netid});
2824 next if !$net->{firewall};
2825 my $iface = "tap${vmid}i$1";
2826
2827 my $macaddr = $net->{macaddr};
2828 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2829 $vmfw_conf, $vmid, 'IN');
2830 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2831 $vmfw_conf, $vmid, 'OUT');
2832 }
2833 };
2834 warn $@ if $@; # just to be sure - should not happen
3fa83edf 2835 }
c8301d63
DM		 2836
2837 # generate firewall rules for OpenVZ containers
2838 foreach my $vmid (keys %{$vmdata->{openvz}}) {
1a9978ed
DM		 2839 eval {
2840 my $conf = $vmdata->{openvz}->{$vmid};
c8301d63 2841
1a9978ed
DM		 2842 my $vmfw_conf = $vmfw_configs->{$vmid};
2843 return if !$vmfw_conf;
2844 return if !$vmfw_conf->{options}->{enable};
c8301d63 2845
708ba714
DM		 2846 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
2847
1a9978ed
DM		 2848 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2849 my $ip = $conf->{ip_address}->{value};
2850 $ip =~ s/\s+/,/g;
2851 parse_address_list($ip); # make sure we have a valid $ip list
27083984 2852
1a9978ed 2853 my @ips = split(',', $ip);
27083984 2854
1a9978ed
DM		 2855 foreach my $singleip (@ips) {
2856 my $venet0ipset = {};
2857 $venet0ipset->{cidr} = $singleip;
2858 push @{$cluster_conf->{ipset}->{venet0}}, $venet0ipset;
2859 }
c8301d63 2860
1a9978ed
DM		 2861 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN');
2862 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT');
2863 }
530c005e 2864
1a9978ed
DM		 2865 if ($conf->{netif} && $conf->{netif}->{value}) {
2866 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
2867 foreach my $netid (keys %$netif) {
2868 my $d = $netif->{$netid};
2869
2870 my $macaddr = $d->{mac};
2871 my $iface = $d->{host_ifname};
2872 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2873 $vmfw_conf, $vmid, 'IN');
2874 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2875 $vmfw_conf, $vmid, 'OUT');
2876 }
c8301d63 2877 }
1a9978ed
DM		 2878 };
2879 warn $@ if $@; # just to be sure - should not happen
c8301d63 2880 }
c0413e35 2881
097820b0
AD		 2882 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
2883 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
2884 }
2885
708ba714 2886 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
27083984 2887
3dfa8a7f 2888 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 2889}
2890
2891sub get_ruleset_status {
4bd0a9c4 2892 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 2893
2894 my $statushash = {};
2895
2896 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 2897 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 2898
3fa83edf
DM		 2899 $statushash->{$chain}->{sig} = $sig;
2900
2901 my $oldsig = $active_chains->{$chain};
2902 if (!defined($oldsig)) {
2903 $statushash->{$chain}->{action} = 'create';
2904 } else {
2905 if ($oldsig eq $sig) {
2906 $statushash->{$chain}->{action} = 'exists';
2907 } else {
2908 $statushash->{$chain}->{action} = 'update';
2909 }
2910 }
2911 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2912 foreach my $cmd (@{$ruleset->{$chain}}) {
2913 print "\t$cmd\n" if $verbose;
2914 }
2915 }
2916
2917 foreach my $chain (sort keys %$active_chains) {
2918 if (!defined($ruleset->{$chain})) {
2919 my $sig = $active_chains->{$chain};
2920 $statushash->{$chain}->{action} = 'delete';
2921 $statushash->{$chain}->{sig} = $sig;
2922 print "delete $chain ($sig)\n" if $verbose;
2923 }
6158271d 2924 }
2a052ee3 2925
3fa83edf
DM		 2926 return $statushash;
2927}
2928
3fa83edf
DM		 2929sub print_sig_rule {
2930 my ($chain, $sig) = @_;
2931
09d5f68e
DM		 2932 # We just use this to store a SHA1 checksum used to detect changes
2933 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2934}
2935
df7cb349 2936sub get_ruleset_cmdlist {
a84f4d96 2937 my ($ruleset, $verbose) = @_;
3fa83edf 2938
3fa83edf 2939 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 2940
4bd0a9c4
DM		 2941 my ($active_chains, $hooks) = iptables_get_chains();
2942 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 2943
2944 # create missing chains first
2945 foreach my $chain (sort keys %$ruleset) {
2946 my $stat = $statushash->{$chain};
2947 die "internal error" if !$stat;
2948 next if $stat->{action} ne 'create';
886aba9c 2949
3fa83edf
DM		 2950 $cmdlist .= ":$chain - [0:0]\n";
2951 }
2952
4bd0a9c4
DM		 2953 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2954 if (!$hooks->{$h}) {
2955 $cmdlist .= "-A $h -j PVEFW-$h\n";
2956 }
3fa83edf
DM		 2957 }
2958
2959 foreach my $chain (sort keys %$ruleset) {
2960 my $stat = $statushash->{$chain};
2961 die "internal error" if !$stat;
2962
2963 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2964 $cmdlist .= "-F $chain\n";
2965 foreach my $cmd (@{$ruleset->{$chain}}) {
2966 $cmdlist .= "$cmd\n";
2967 }
2968 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2969 } elsif ($stat->{action} eq 'delete') {
f5d28682 2970 die "internal error"; # this should not happen
3fa83edf
DM		 2971 } elsif ($stat->{action} eq 'exists') {
2972 # do nothing
2973 } else {
2974 die "internal error - unknown status '$stat->{action}'";
2975 }
2976 }
2977
f5d28682
DM		 2978 foreach my $chain (keys %$statushash) {
2979 next if $statushash->{$chain}->{action} ne 'delete';
2980 $cmdlist .= "-F $chain\n";
2981 }
2982 foreach my $chain (keys %$statushash) {
2983 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 2984 next if $chain eq 'PVEFW-INPUT';
2985 next if $chain eq 'PVEFW-OUTPUT';
2986 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 2987 $cmdlist .= "-X $chain\n";
2988 }
2989
3f95d14a 2990 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 2991
3fa83edf
DM		 2992 $cmdlist .= "COMMIT\n";
2993
3f95d14a 2994 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 2995}
2996
34cdedfa 2997sub get_ipset_cmdlist {
dd7a13fd 2998 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 2999
3000 my $cmdlist = "";
3001
dd7a13fd
DM		 3002 my $delete_cmdlist = "";
3003
4bd0a9c4
DM		 3004 my $active_chains = ipset_get_chains();
3005 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 3006
e34d0e58 3007 # remove stale _swap chains
30f1b100
DM		 3008 foreach my $chain (keys %$active_chains) {
3009 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3010 $cmdlist .= "destroy $chain\n";
3011 }
3012 }
3013
dd7a13fd
DM		 3014 foreach my $chain (sort keys %$ruleset) {
3015 my $stat = $statushash->{$chain};
3016 die "internal error" if !$stat;
2a052ee3 3017
dd7a13fd
DM		 3018 if ($stat->{action} eq 'create') {
3019 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 3020 $cmdlist .= "$cmd\n";
3021 }
dd7a13fd 3022 }
34cdedfa 3023
dd7a13fd
DM		 3024 if ($stat->{action} eq 'update') {
3025 my $chain_swap = $chain."_swap";
cbb5d6f3 3026
dd7a13fd
DM		 3027 foreach my $cmd (@{$ruleset->{$chain}}) {
3028 $cmd =~ s/$chain/$chain_swap/;
3029 $cmdlist .= "$cmd\n";
34cdedfa 3030 }
dd7a13fd
DM		 3031 $cmdlist .= "swap $chain_swap $chain\n";
3032 $cmdlist .= "flush $chain_swap\n";
3033 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 3034 }
34cdedfa 3035
dd7a13fd 3036 }
3f95d14a 3037
dd7a13fd
DM		 3038 foreach my $chain (keys %$statushash) {
3039 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 3040
dd7a13fd
DM		 3041 $delete_cmdlist .= "flush $chain\n";
3042 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 3043 }
3044
dd7a13fd 3045 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 3046
dd7a13fd 3047 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 3048}
3049
6b9f68a2 3050sub apply_ruleset {
34cdedfa 3051 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 3052
3053 enable_bridge_firewall();
3054
cbb5d6f3 3055 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 3056 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 3057
81a0bf43 3058 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 3059
81a0bf43
DM		 3060 if ($verbose) {
3061 if ($ipset_changes) {
3062 print "ipset changes:\n";
3063 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3064 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3065 }
3f95d14a 3066
81a0bf43
DM		 3067 if ($changes) {
3068 print "iptables changes:\n";
3069 print $cmdlist;
3070 }
3071 }
3fa83edf 3072
2a052ee3 3073 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 3074
3fa83edf
DM		 3075 iptables_restore_cmdlist($cmdlist);
3076
dd7a13fd 3077 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 3078
6158271d 3079 # test: re-read status and check if everything is up to date
4bd0a9c4 3080 my $active_chains = iptables_get_chains();
81a0bf43 3081 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 3082
3083 my $errors;
3084 foreach my $chain (sort keys %$ruleset) {
3085 my $stat = $statushash->{$chain};
3086 if ($stat->{action} ne 'exists') {
3087 warn "unable to update chain '$chain'\n";
3088 $errors = 1;
3089 }
3090 }
b6360c3f 3091
3fa83edf 3092 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 3093
3094 update_nf_conntrack_max($hostfw_conf);
3095
3096 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
3097
b6360c3f
DM		 3098}
3099
490cdead
DM		 3100sub update_nf_conntrack_max {
3101 my ($hostfw_conf) = @_;
3102
3103 my $max = 65536; # reasonable default
3104
3105 my $options = $hostfw_conf->{options} || {};
3106
3107 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
3108 $max = $options->{nf_conntrack_max};
3109 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3110 }
3111
3112 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3113 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3114
3115 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
3116
3117 if ($current != $max) {
3118 my $hashsize = int($max/4);
3119 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
3120 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
3121 }
3122}
3123
28c082a1
AD		 3124sub update_nf_conntrack_tcp_timeout_established {
3125 my ($hostfw_conf) = @_;
3126
3127 my $options = $hostfw_conf->{options} || {};
3128
3129 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
3130
3131 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3132}
3133
c4a2e5ae
DM		 3134sub remove_pvefw_chains {
3135
3136 my ($chash, $hooks) = iptables_get_chains();
3137 my $cmdlist = "*filter\n";
3138
3139 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3140 if ($hooks->{$h}) {
3141 $cmdlist .= "-D $h -j PVEFW-$h\n";
3142 }
3143 }
cbb5d6f3 3144
c4a2e5ae
DM		 3145 foreach my $chain (keys %$chash) {
3146 $cmdlist .= "-F $chain\n";
3147 }
3148
3149 foreach my $chain (keys %$chash) {
3150 $cmdlist .= "-X $chain\n";
3151 }
3152 $cmdlist .= "COMMIT\n";
3153
3154 iptables_restore_cmdlist($cmdlist);
3155}
3156
8b453a09
DM		 3157sub init {
3158 my $cluster_conf = load_clusterfw_conf();
3159 my $cluster_options = $cluster_conf->{options};
3160 my $enable = $cluster_options->{enable};
3161
3162 return if !$enable;
3163
3164 # load required modules here
3165}
3166
6b9f68a2 3167sub update {
6b9f68a2 3168 my $code = sub {
3dfa8a7f
DM		 3169
3170 my $cluster_conf = load_clusterfw_conf();
3171 my $cluster_options = $cluster_conf->{options};
3172
51e57fee 3173 my $enable = $cluster_options->{enable};
3dfa8a7f 3174
e2beb7aa 3175 die "Firewall is disabled - cannot start\n" if !$enable;
3dfa8a7f
DM		 3176
3177 if (!$enable) {
b22130d3 3178 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 3179 return;
3180 }
3181
3182 my $hostfw_conf = load_hostfw_conf();
3183
3184 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 3185
d4cda423 3186 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset);
6b9f68a2
DM		 3187 };
3188
3189 run_locked($code);
3190}
3191
b6360c3f 31921;
Firewall test scripts